avcodec/Makefile: remove bogus/duplicate PNG parser entry
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
240   --enable-libgme          enable Game Music Emu via libgme [no]
241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
244   --enable-libjack         enable JACK audio sound server [no]
245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
247   --enable-liblensfun      enable lensfun lens correction [no]
248   --enable-libmodplug      enable ModPlug via libmodplug [no]
249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
252   --enable-libopencv       enable video filtering via libopencv [no]
253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
256   --enable-libopus         enable Opus de/encoding via libopus [no]
257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
258   --enable-librav1e        enable AV1 encoding via rav1e [no]
259   --enable-librsvg         enable SVG rasterization via librsvg [no]
260   --enable-librubberband   enable rubberband needed for rubberband filter [no]
261   --enable-librtmp         enable RTMP[E] support via librtmp [no]
262   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
263   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
264   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
265   --enable-libsoxr         enable Include libsoxr resampling [no]
266   --enable-libspeex        enable Speex de/encoding via libspeex [no]
267   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
268   --enable-libssh          enable SFTP protocol via libssh [no]
269   --enable-libtensorflow   enable TensorFlow as a DNN module backend
270                            for DNN based filters like sr [no]
271   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
272   --enable-libtheora       enable Theora encoding via libtheora [no]
273   --enable-libtls          enable LibreSSL (via libtls), needed for https support
274                            if openssl, gnutls or mbedtls is not used [no]
275   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
276   --enable-libv4l2         enable libv4l2/v4l-utils [no]
277   --enable-libvidstab      enable video stabilization using vid.stab [no]
278   --enable-libvmaf         enable vmaf filter via libvmaf [no]
279   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
280   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
281                            native implementation exists [no]
282   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
283   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
284   --enable-libwebp         enable WebP encoding via libwebp [no]
285   --enable-libx264         enable H.264 encoding via x264 [no]
286   --enable-libx265         enable HEVC encoding via x265 [no]
287   --enable-libxavs         enable AVS encoding via xavs [no]
288   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
289   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
290   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
291   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
292   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
293   --enable-libxvid         enable Xvid encoding via xvidcore,
294                            native MPEG-4/Xvid encoder exists [no]
295   --enable-libxml2         enable XML parsing using the C library libxml2, needed
296                            for dash demuxing support [no]
297   --enable-libzimg         enable z.lib, needed for zscale filter [no]
298   --enable-libzmq          enable message passing via libzmq [no]
299   --enable-libzvbi         enable teletext support via libzvbi [no]
300   --enable-lv2             enable LV2 audio filtering [no]
301   --disable-lzma           disable lzma [autodetect]
302   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
303   --enable-mbedtls         enable mbedTLS, needed for https support
304                            if openssl, gnutls or libtls is not used [no]
305   --enable-mediacodec      enable Android MediaCodec support [no]
306   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
307   --enable-openal          enable OpenAL 1.1 capture support [no]
308   --enable-opencl          enable OpenCL processing [no]
309   --enable-opengl          enable OpenGL rendering [no]
310   --enable-openssl         enable openssl, needed for https support
311                            if gnutls, libtls or mbedtls is not used [no]
312   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
313   --disable-sndio          disable sndio support [autodetect]
314   --disable-schannel       disable SChannel SSP, needed for TLS support on
315                            Windows if openssl and gnutls are not used [autodetect]
316   --disable-sdl2           disable sdl2 [autodetect]
317   --disable-securetransport disable Secure Transport, needed for TLS support
318                            on OSX if openssl and gnutls are not used [autodetect]
319   --enable-vapoursynth     enable VapourSynth demuxer [no]
320   --enable-vulkan          enable Vulkan code [no]
321   --disable-xlib           disable xlib [autodetect]
322   --disable-zlib           disable zlib [autodetect]
323
324   The following libraries provide various hardware acceleration features:
325   --disable-amf            disable AMF video encoding code [autodetect]
326   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
327   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
328   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
329   --disable-cuvid          disable Nvidia CUVID support [autodetect]
330   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
331   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
332   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
333   --enable-libdrm          enable DRM code (Linux) [no]
334   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
335   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
336   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
337   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
338   --disable-nvenc          disable Nvidia video encoding code [autodetect]
339   --enable-omx             enable OpenMAX IL code [no]
340   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
341   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
342   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
343   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
344   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
345   --disable-videotoolbox   disable VideoToolbox code [autodetect]
346
347 Toolchain options:
348   --arch=ARCH              select architecture [$arch]
349   --cpu=CPU                select the minimum required CPU (affects
350                            instruction selection, may crash on older CPUs)
351   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
352   --progs-suffix=SUFFIX    program name suffix []
353   --enable-cross-compile   assume a cross-compiler is used
354   --sysroot=PATH           root of cross-build tree
355   --sysinclude=PATH        location of cross-build system headers
356   --target-os=OS           compiler targets OS [$target_os]
357   --target-exec=CMD        command to run executables on target
358   --target-path=DIR        path to view of build directory on target
359   --target-samples=DIR     path to samples directory on target
360   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
361   --toolchain=NAME         set tool defaults according to NAME
362                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
363                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
364                            valgrind-massif, valgrind-memcheck,
365                            msvc, icl, gcov, llvm-cov, hardened)
366   --nm=NM                  use nm tool NM [$nm_default]
367   --ar=AR                  use archive tool AR [$ar_default]
368   --as=AS                  use assembler AS [$as_default]
369   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
370   --strip=STRIP            use strip tool STRIP [$strip_default]
371   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
372   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
373   --cc=CC                  use C compiler CC [$cc_default]
374   --cxx=CXX                use C compiler CXX [$cxx_default]
375   --objcc=OCC              use ObjC compiler OCC [$cc_default]
376   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
377   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
378   --ld=LD                  use linker LD [$ld_default]
379   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
380   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
381   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
382   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
383   --host-cc=HOSTCC         use host C compiler HOSTCC
384   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
385   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
386   --host-ld=HOSTLD         use host linker HOSTLD
387   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
388   --host-extralibs=HLIBS   use libs HLIBS when linking for host
389   --host-os=OS             compiler host OS [$target_os]
390   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
391   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
392   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
393   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
394   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
395   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
396   --extra-libs=ELIBS       add ELIBS [$ELIBS]
397   --extra-version=STRING   version string suffix []
398   --optflags=OPTFLAGS      override optimization-related compiler flags
399   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
400   --build-suffix=SUFFIX    library name suffix []
401   --enable-pic             build position-independent code
402   --enable-thumb           compile for Thumb instruction set
403   --enable-lto             use link-time optimization
404   --env="ENV=override"     override the environment variables
405
406 Advanced options (experts only):
407   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
408   --custom-allocator=NAME  use a supported custom allocator
409   --disable-symver         disable symbol versioning
410   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
411   --disable-safe-bitstream-reader
412                            disable buffer boundary checking in bitreaders
413                            (faster, but may crash)
414   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
415
416 Optimization options (experts only):
417   --disable-asm            disable all assembly optimizations
418   --disable-altivec        disable AltiVec optimizations
419   --disable-vsx            disable VSX optimizations
420   --disable-power8         disable POWER8 optimizations
421   --disable-amd3dnow       disable 3DNow! optimizations
422   --disable-amd3dnowext    disable 3DNow! extended optimizations
423   --disable-mmx            disable MMX optimizations
424   --disable-mmxext         disable MMXEXT optimizations
425   --disable-sse            disable SSE optimizations
426   --disable-sse2           disable SSE2 optimizations
427   --disable-sse3           disable SSE3 optimizations
428   --disable-ssse3          disable SSSE3 optimizations
429   --disable-sse4           disable SSE4 optimizations
430   --disable-sse42          disable SSE4.2 optimizations
431   --disable-avx            disable AVX optimizations
432   --disable-xop            disable XOP optimizations
433   --disable-fma3           disable FMA3 optimizations
434   --disable-fma4           disable FMA4 optimizations
435   --disable-avx2           disable AVX2 optimizations
436   --disable-avx512         disable AVX-512 optimizations
437   --disable-aesni          disable AESNI optimizations
438   --disable-armv5te        disable armv5te optimizations
439   --disable-armv6          disable armv6 optimizations
440   --disable-armv6t2        disable armv6t2 optimizations
441   --disable-vfp            disable VFP optimizations
442   --disable-neon           disable NEON optimizations
443   --disable-inline-asm     disable use of inline assembly
444   --disable-x86asm         disable use of standalone x86 assembly
445   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
446   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
447   --disable-msa            disable MSA optimizations
448   --disable-msa2           disable MSA2 optimizations
449   --disable-mipsfpu        disable floating point MIPS optimizations
450   --disable-mmi            disable Loongson SIMD optimizations
451   --disable-fast-unaligned consider unaligned accesses slow
452
453 Developer options (useful when working on FFmpeg itself):
454   --disable-debug          disable debugging symbols
455   --enable-debug=LEVEL     set the debug level [$debuglevel]
456   --disable-optimizations  disable compiler optimizations
457   --enable-extra-warnings  enable more compiler warnings
458   --disable-stripping      disable stripping of executables and shared libraries
459   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
460                            2 causes a slowdown at runtime.
461   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
462   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
463                            leaks and errors, using the specified valgrind binary.
464                            Cannot be combined with --target-exec
465   --enable-ftrapv          Trap arithmetic overflows
466   --samples=PATH           location of test samples for FATE, if not set use
467                            \$FATE_SAMPLES at make invocation time.
468   --enable-neon-clobber-test check NEON registers for clobbering (should be
469                            used only for debugging purposes)
470   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
471                            should be used only for debugging purposes)
472   --enable-random          randomly enable/disable components
473   --disable-random
474   --enable-random=LIST     randomly enable/disable specific components or
475   --disable-random=LIST    component groups. LIST is a comma-separated list
476                            of NAME[:PROB] entries where NAME is a component
477                            (group) and PROB the probability associated with
478                            NAME (default 0.5).
479   --random-seed=VALUE      seed value for --enable/disable-random
480   --disable-valgrind-backtrace do not print a backtrace under Valgrind
481                            (only applies to --disable-optimizations builds)
482   --enable-ossfuzz         Enable building fuzzer tool
483   --libfuzzer=PATH         path to libfuzzer
484   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
485                            in the name) of tests whose result is ignored
486   --enable-linux-perf      enable Linux Performance Monitor API
487   --disable-large-tests    disable tests that use a large amount of memory
488
489 NOTE: Object files are built at the place where configure is launched.
490 EOF
491   exit 0
492 }
493
494 if test -t 1 && which tput >/dev/null 2>&1; then
495     ncolors=$(tput colors)
496     if test -n "$ncolors" && test $ncolors -ge 8; then
497         bold_color=$(tput bold)
498         warn_color=$(tput setaf 3)
499         error_color=$(tput setaf 1)
500         reset_color=$(tput sgr0)
501     fi
502     # 72 used instead of 80 since that's the default of pr
503     ncols=$(tput cols)
504 fi
505 : ${ncols:=72}
506
507 log(){
508     echo "$@" >> $logfile
509 }
510
511 log_file(){
512     log BEGIN "$1"
513     log_file_i=1
514     while IFS= read -r log_file_line; do
515         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
516         log_file_i=$(($log_file_i+1))
517     done < "$1" >> "$logfile"
518     log END "$1"
519 }
520
521 warn(){
522     log "WARNING: $*"
523     WARNINGS="${WARNINGS}WARNING: $*\n"
524 }
525
526 die(){
527     log "$@"
528     echo "$error_color$bold_color$@$reset_color"
529     cat <<EOF
530
531 If you think configure made a mistake, make sure you are using the latest
532 version from Git.  If the latest version fails, report the problem to the
533 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
534 EOF
535     if disabled logging; then
536         cat <<EOF
537 Rerun configure with logging enabled (do not use --disable-logging), and
538 include the log this produces with your report.
539 EOF
540     else
541         cat <<EOF
542 Include the log file "$logfile" produced by configure as this will help
543 solve the problem.
544 EOF
545     fi
546     exit 1
547 }
548
549 # Avoid locale weirdness, besides we really just want to translate ASCII.
550 toupper(){
551     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
552 }
553
554 tolower(){
555     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
556 }
557
558 c_escape(){
559     echo "$*" | sed 's/["\\]/\\\0/g'
560 }
561
562 sh_quote(){
563     v=$(echo "$1" | sed "s/'/'\\\\''/g")
564     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
565     echo "$v"
566 }
567
568 cleanws(){
569     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
570 }
571
572 filter(){
573     pat=$1
574     shift
575     for v; do
576         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
577     done
578 }
579
580 filter_out(){
581     pat=$1
582     shift
583     for v; do
584         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
585     done
586 }
587
588 map(){
589     m=$1
590     shift
591     for v; do eval $m; done
592 }
593
594 add_suffix(){
595     suffix=$1
596     shift
597     for v; do echo ${v}${suffix}; done
598 }
599
600 remove_suffix(){
601     suffix=$1
602     shift
603     for v; do echo ${v%$suffix}; done
604 }
605
606 set_all(){
607     value=$1
608     shift
609     for var in $*; do
610         eval $var=$value
611     done
612 }
613
614 set_weak(){
615     value=$1
616     shift
617     for var; do
618         eval : \${$var:=$value}
619     done
620 }
621
622 sanitize_var_name(){
623     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
624 }
625
626 set_sanitized(){
627     var=$1
628     shift
629     eval $(sanitize_var_name "$var")='$*'
630 }
631
632 get_sanitized(){
633     eval echo \$$(sanitize_var_name "$1")
634 }
635
636 pushvar(){
637     for pvar in $*; do
638         eval level=\${${pvar}_level:=0}
639         eval ${pvar}_${level}="\$$pvar"
640         eval ${pvar}_level=$(($level+1))
641     done
642 }
643
644 popvar(){
645     for pvar in $*; do
646         eval level=\${${pvar}_level:-0}
647         test $level = 0 && continue
648         eval level=$(($level-1))
649         eval $pvar="\${${pvar}_${level}}"
650         eval ${pvar}_level=$level
651         eval unset ${pvar}_${level}
652     done
653 }
654
655 request(){
656     for var in $*; do
657         eval ${var}_requested=yes
658         eval $var=
659     done
660 }
661
662 warn_if_gets_disabled(){
663     for var in $*; do
664         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
665     done
666 }
667
668 enable(){
669     set_all yes $*
670 }
671
672 disable(){
673     set_all no $*
674 }
675
676 disable_with_reason(){
677     disable $1
678     eval "${1}_disable_reason=\"$2\""
679     if requested $1; then
680         die "ERROR: $1 requested, but $2"
681     fi
682 }
683
684 enable_weak(){
685     set_weak yes $*
686 }
687
688 disable_weak(){
689     set_weak no $*
690 }
691
692 enable_sanitized(){
693     for var; do
694         enable $(sanitize_var_name $var)
695     done
696 }
697
698 disable_sanitized(){
699     for var; do
700         disable $(sanitize_var_name $var)
701     done
702 }
703
704 do_enable_deep(){
705     for var; do
706         enabled $var && continue
707         set -- $var
708         eval enable_deep \$${var}_select
709         var=$1
710         eval enable_deep_weak \$${var}_suggest
711     done
712 }
713
714 enable_deep(){
715     do_enable_deep $*
716     enable $*
717 }
718
719 enable_deep_weak(){
720     for var; do
721         disabled $var && continue
722         set -- $var
723         do_enable_deep $var
724         var=$1
725         enable_weak $var
726     done
727 }
728
729 requested(){
730     test "${1#!}" = "$1" && op="=" || op="!="
731     eval test "x\$${1#!}_requested" $op "xyes"
732 }
733
734 enabled(){
735     test "${1#!}" = "$1" && op="=" || op="!="
736     eval test "x\$${1#!}" $op "xyes"
737 }
738
739 disabled(){
740     test "${1#!}" = "$1" && op="=" || op="!="
741     eval test "x\$${1#!}" $op "xno"
742 }
743
744 enabled_all(){
745     for opt; do
746         enabled $opt || return 1
747     done
748 }
749
750 disabled_all(){
751     for opt; do
752         disabled $opt || return 1
753     done
754 }
755
756 enabled_any(){
757     for opt; do
758         enabled $opt && return 0
759     done
760 }
761
762 disabled_any(){
763     for opt; do
764         disabled $opt && return 0
765     done
766     return 1
767 }
768
769 set_default(){
770     for opt; do
771         eval : \${$opt:=\$${opt}_default}
772     done
773 }
774
775 is_in(){
776     value=$1
777     shift
778     for var in $*; do
779         [ $var = $value ] && return 0
780     done
781     return 1
782 }
783
784 # The cfg loop is very hot (several thousands iterations), and in bash also
785 # potentialy quite slow. Try to abort the iterations early, preferably without
786 # calling functions. 70%+ of the time cfg is already done or without deps.
787 check_deps(){
788     for cfg; do
789         eval [ x\$${cfg}_checking = xdone ] && continue
790         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
791
792         eval "
793         dep_all=\$${cfg}_deps
794         dep_any=\$${cfg}_deps_any
795         dep_con=\$${cfg}_conflict
796         dep_sel=\$${cfg}_select
797         dep_sgs=\$${cfg}_suggest
798         dep_ifa=\$${cfg}_if
799         dep_ifn=\$${cfg}_if_any
800         "
801
802         # most of the time here $cfg has no deps - avoid costly no-op work
803         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
804             eval ${cfg}_checking=inprogress
805
806             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
807             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
808             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
809
810             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
811             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
812             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
813             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
814             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
815             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
816
817             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
818
819             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
820                 # filter out library deps, these do not belong in extralibs
821                 is_in $dep $LIBRARY_LIST && continue
822                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
823             done
824         fi
825
826         eval ${cfg}_checking=done
827     done
828 }
829
830 print_config(){
831     pfx=$1
832     files=$2
833     shift 2
834     map 'eval echo "$v \${$v:-no}"' "$@" |
835     awk "BEGIN { split(\"$files\", files) }
836         {
837             c = \"$pfx\" toupper(\$1);
838             v = \$2;
839             sub(/yes/, 1, v);
840             sub(/no/,  0, v);
841             for (f in files) {
842                 file = files[f];
843                 if (file ~ /\\.h\$/) {
844                     printf(\"#define %s %d\\n\", c, v) >>file;
845                 } else if (file ~ /\\.asm\$/) {
846                     printf(\"%%define %s %d\\n\", c, v) >>file;
847                 } else if (file ~ /\\.mak\$/) {
848                     n = -v ? \"\" : \"!\";
849                     printf(\"%s%s=yes\\n\", n, c) >>file;
850                 } else if (file ~ /\\.texi\$/) {
851                     pre = -v ? \"\" : \"@c \";
852                     yesno = \$2;
853                     c2 = tolower(c);
854                     gsub(/_/, \"-\", c2);
855                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
856                 }
857             }
858         }"
859 }
860
861 print_enabled(){
862     suf=$1
863     shift
864     for v; do
865         enabled $v && printf "%s\n" ${v%$suf}
866     done
867 }
868
869 append(){
870     var=$1
871     shift
872     eval "$var=\"\$$var $*\""
873 }
874
875 prepend(){
876     var=$1
877     shift
878     eval "$var=\"$* \$$var\""
879 }
880
881 reverse () {
882     eval '
883         reverse_out=
884         for v in $'$1'; do
885             reverse_out="$v $reverse_out"
886         done
887         '$1'=$reverse_out
888     '
889 }
890
891 # keeps the last occurence of each non-unique item
892 unique(){
893     unique_out=
894     eval unique_in=\$$1
895     reverse unique_in
896     for v in $unique_in; do
897         # " $unique_out" +space such that every item is surrounded with spaces
898         case " $unique_out" in *" $v "*) continue; esac  # already in list
899         unique_out="$unique_out$v "
900     done
901     reverse unique_out
902     eval $1=\$unique_out
903 }
904
905 resolve(){
906     resolve_out=
907     eval resolve_in=\$$1
908     for v in $resolve_in; do
909         eval 'resolve_out="$resolve_out$'$v' "'
910     done
911     eval $1=\$resolve_out
912 }
913
914 add_cppflags(){
915     append CPPFLAGS "$@"
916 }
917
918 add_cflags(){
919     append CFLAGS $($cflags_filter "$@")
920 }
921
922 add_cflags_headers(){
923     append CFLAGS_HEADERS $($cflags_filter "$@")
924 }
925
926 add_cxxflags(){
927     append CXXFLAGS $($cflags_filter "$@")
928 }
929
930 add_objcflags(){
931     append OBJCFLAGS $($objcflags_filter "$@")
932 }
933
934 add_asflags(){
935     append ASFLAGS $($asflags_filter "$@")
936 }
937
938 add_ldflags(){
939     append LDFLAGS $($ldflags_filter "$@")
940 }
941
942 add_ldexeflags(){
943     append LDEXEFLAGS $($ldflags_filter "$@")
944 }
945
946 add_ldsoflags(){
947     append LDSOFLAGS $($ldflags_filter "$@")
948 }
949
950 add_extralibs(){
951     prepend extralibs $($ldflags_filter "$@")
952 }
953
954 add_stripflags(){
955     append ASMSTRIPFLAGS "$@"
956 }
957
958 add_host_cppflags(){
959     append host_cppflags "$@"
960 }
961
962 add_host_cflags(){
963     append host_cflags $($host_cflags_filter "$@")
964 }
965
966 add_host_ldflags(){
967     append host_ldflags $($host_ldflags_filter "$@")
968 }
969
970 add_compat(){
971     append compat_objs $1
972     shift
973     map 'add_cppflags -D$v' "$@"
974 }
975
976 test_cmd(){
977     log "$@"
978     "$@" >> $logfile 2>&1
979 }
980
981 test_stat(){
982     log test_stat "$@"
983     stat "$1" >> $logfile 2>&1
984 }
985
986 cc_e(){
987     eval printf '%s\\n' $CC_E
988 }
989
990 cc_o(){
991     eval printf '%s\\n' $CC_O
992 }
993
994 as_o(){
995     eval printf '%s\\n' $AS_O
996 }
997
998 x86asm_o(){
999     eval printf '%s\\n' $X86ASM_O
1000 }
1001
1002 ld_o(){
1003     eval printf '%s\\n' $LD_O
1004 }
1005
1006 hostcc_e(){
1007     eval printf '%s\\n' $HOSTCC_E
1008 }
1009
1010 hostcc_o(){
1011     eval printf '%s\\n' $HOSTCC_O
1012 }
1013
1014 nvcc_o(){
1015     eval printf '%s\\n' $NVCC_O
1016 }
1017
1018 test_cc(){
1019     log test_cc "$@"
1020     cat > $TMPC
1021     log_file $TMPC
1022     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1023 }
1024
1025 test_cxx(){
1026     log test_cxx "$@"
1027     cat > $TMPCPP
1028     log_file $TMPCPP
1029     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1030 }
1031
1032 test_objcc(){
1033     log test_objcc "$@"
1034     cat > $TMPM
1035     log_file $TMPM
1036     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1037 }
1038
1039 test_nvcc(){
1040     log test_nvcc "$@"
1041     cat > $TMPCU
1042     log_file $TMPCU
1043     tmpcu_=$TMPCU
1044     tmpo_=$TMPO
1045     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1046     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1047 }
1048
1049 check_nvcc() {
1050     log check_nvcc "$@"
1051     name=$1
1052     shift 1
1053     disabled $name && return
1054     disable $name
1055     test_nvcc "$@" <<EOF && enable $name
1056 extern "C" {
1057     __global__ void hello(unsigned char *data) {}
1058 }
1059 EOF
1060 }
1061
1062 test_cpp(){
1063     log test_cpp "$@"
1064     cat > $TMPC
1065     log_file $TMPC
1066     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1067 }
1068
1069 test_as(){
1070     log test_as "$@"
1071     cat > $TMPS
1072     log_file $TMPS
1073     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1074 }
1075
1076 test_x86asm(){
1077     log test_x86asm "$@"
1078     echo "$1" > $TMPASM
1079     log_file $TMPASM
1080     shift
1081     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1082 }
1083
1084 check_cmd(){
1085     log check_cmd "$@"
1086     cmd=$1
1087     disabled $cmd && return
1088     disable $cmd
1089     test_cmd $@ && enable $cmd
1090 }
1091
1092 check_as(){
1093     log check_as "$@"
1094     name=$1
1095     code=$2
1096     shift 2
1097     disable $name
1098     test_as $@ <<EOF && enable $name
1099 $code
1100 EOF
1101 }
1102
1103 check_inline_asm(){
1104     log check_inline_asm "$@"
1105     name="$1"
1106     code="$2"
1107     shift 2
1108     disable $name
1109     test_cc "$@" <<EOF && enable $name
1110 void foo(void){ __asm__ volatile($code); }
1111 EOF
1112 }
1113
1114 check_inline_asm_flags(){
1115     log check_inline_asm_flags "$@"
1116     name="$1"
1117     code="$2"
1118     flags=''
1119     shift 2
1120     while [ "$1" != "" ]; do
1121       append flags $1
1122       shift
1123     done;
1124     disable $name
1125     cat > $TMPC <<EOF
1126 void foo(void){ __asm__ volatile($code); }
1127 EOF
1128     log_file $TMPC
1129     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1130     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1131 }
1132
1133 check_insn(){
1134     log check_insn "$@"
1135     check_inline_asm ${1}_inline "\"$2\""
1136     check_as ${1}_external "$2"
1137 }
1138
1139 check_x86asm(){
1140     log check_x86asm "$@"
1141     name=$1
1142     shift
1143     disable $name
1144     test_x86asm "$@" && enable $name
1145 }
1146
1147 test_ld(){
1148     log test_ld "$@"
1149     type=$1
1150     shift 1
1151     flags=$(filter_out '-l*|*.so' $@)
1152     libs=$(filter '-l*|*.so' $@)
1153     test_$type $($cflags_filter $flags) || return
1154     flags=$($ldflags_filter $flags)
1155     libs=$($ldflags_filter $libs)
1156     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1157 }
1158
1159 check_ld(){
1160     log check_ld "$@"
1161     type=$1
1162     name=$2
1163     shift 2
1164     disable $name
1165     test_ld $type $@ && enable $name
1166 }
1167
1168 print_include(){
1169     hdr=$1
1170     test "${hdr%.h}" = "${hdr}" &&
1171         echo "#include $hdr"    ||
1172         echo "#include <$hdr>"
1173 }
1174
1175 test_code(){
1176     log test_code "$@"
1177     check=$1
1178     headers=$2
1179     code=$3
1180     shift 3
1181     {
1182         for hdr in $headers; do
1183             print_include $hdr
1184         done
1185         echo "int main(void) { $code; return 0; }"
1186     } | test_$check "$@"
1187 }
1188
1189 check_cppflags(){
1190     log check_cppflags "$@"
1191     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1192 #include <stdlib.h>
1193 EOF
1194 }
1195
1196 test_cflags(){
1197     log test_cflags "$@"
1198     set -- $($cflags_filter "$@")
1199     test_cc "$@" <<EOF
1200 int x;
1201 EOF
1202 }
1203
1204 check_cflags(){
1205     log check_cflags "$@"
1206     test_cflags "$@" && add_cflags "$@"
1207 }
1208
1209 check_cxxflags(){
1210     log check_cxxflags "$@"
1211     set -- $($cflags_filter "$@")
1212     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1213 int x;
1214 EOF
1215 }
1216
1217 test_objcflags(){
1218     log test_objcflags "$@"
1219     set -- $($objcflags_filter "$@")
1220     test_objcc "$@" <<EOF
1221 int x;
1222 EOF
1223 }
1224
1225 check_objcflags(){
1226     log check_objcflags "$@"
1227     test_objcflags "$@" && add_objcflags "$@"
1228 }
1229
1230 test_ldflags(){
1231     log test_ldflags "$@"
1232     set -- $($ldflags_filter "$@")
1233     test_ld "cc" "$@" <<EOF
1234 int main(void){ return 0; }
1235 EOF
1236 }
1237
1238 check_ldflags(){
1239     log check_ldflags "$@"
1240     test_ldflags "$@" && add_ldflags "$@"
1241 }
1242
1243 test_stripflags(){
1244     log test_stripflags "$@"
1245     # call test_cc to get a fresh TMPO
1246     test_cc <<EOF
1247 int main(void) { return 0; }
1248 EOF
1249     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1250 }
1251
1252 check_stripflags(){
1253     log check_stripflags "$@"
1254     test_stripflags "$@" && add_stripflags "$@"
1255 }
1256
1257 check_headers(){
1258     log check_headers "$@"
1259     headers=$1
1260     shift
1261     disable_sanitized $headers
1262     {
1263         for hdr in $headers; do
1264             print_include $hdr
1265         done
1266         echo "int x;"
1267     } | test_cpp "$@" && enable_sanitized $headers
1268 }
1269
1270 check_header_objcc(){
1271     log check_header_objcc "$@"
1272     rm -f -- "$TMPO"
1273     header=$1
1274     shift
1275     disable_sanitized $header
1276     {
1277        echo "#include <$header>"
1278        echo "int main(void) { return 0; }"
1279     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1280 }
1281
1282 check_apple_framework(){
1283     log check_apple_framework "$@"
1284     framework="$1"
1285     name="$(tolower $framework)"
1286     header="${framework}/${framework}.h"
1287     disable $name
1288     check_header_objcc $header &&
1289         enable $name && eval ${name}_extralibs='"-framework $framework"'
1290 }
1291
1292 check_func(){
1293     log check_func "$@"
1294     func=$1
1295     shift
1296     disable $func
1297     test_ld "cc" "$@" <<EOF && enable $func
1298 extern int $func();
1299 int main(void){ $func(); }
1300 EOF
1301 }
1302
1303 check_complexfunc(){
1304     log check_complexfunc "$@"
1305     func=$1
1306     narg=$2
1307     shift 2
1308     test $narg = 2 && args="f, g" || args="f * I"
1309     disable $func
1310     test_ld "cc" "$@" <<EOF && enable $func
1311 #include <complex.h>
1312 #include <math.h>
1313 float foo(complex float f, complex float g) { return $func($args); }
1314 int main(void){ return (int) foo; }
1315 EOF
1316 }
1317
1318 check_mathfunc(){
1319     log check_mathfunc "$@"
1320     func=$1
1321     narg=$2
1322     shift 2
1323     test $narg = 2 && args="f, g" || args="f"
1324     disable $func
1325     test_ld "cc" "$@" <<EOF && enable $func
1326 #include <math.h>
1327 float foo(float f, float g) { return $func($args); }
1328 int main(void){ return (int) foo; }
1329 EOF
1330 }
1331
1332 check_func_headers(){
1333     log check_func_headers "$@"
1334     headers=$1
1335     funcs=$2
1336     shift 2
1337     {
1338         for hdr in $headers; do
1339             print_include $hdr
1340         done
1341         echo "#include <stdint.h>"
1342         for func in $funcs; do
1343             echo "long check_$func(void) { return (long) $func; }"
1344         done
1345         echo "int main(void) { int ret = 0;"
1346         # LTO could optimize out the test functions without this
1347         for func in $funcs; do
1348             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1349         done
1350         echo "return ret; }"
1351     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1352 }
1353
1354 check_class_headers_cpp(){
1355     log check_class_headers_cpp "$@"
1356     headers=$1
1357     classes=$2
1358     shift 2
1359     {
1360         for hdr in $headers; do
1361             echo "#include <$hdr>"
1362         done
1363         echo "int main(void) { "
1364         i=1
1365         for class in $classes; do
1366             echo "$class obj$i;"
1367             i=$(expr $i + 1)
1368         done
1369         echo "return 0; }"
1370     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1371 }
1372
1373 test_cpp_condition(){
1374     log test_cpp_condition "$@"
1375     header=$1
1376     condition=$2
1377     shift 2
1378     test_cpp "$@" <<EOF
1379 #include <$header>
1380 #if !($condition)
1381 #error "unsatisfied condition: $condition"
1382 #endif
1383 EOF
1384 }
1385
1386 check_cpp_condition(){
1387     log check_cpp_condition "$@"
1388     name=$1
1389     shift 1
1390     disable $name
1391     test_cpp_condition "$@" && enable $name
1392 }
1393
1394 test_cflags_cc(){
1395     log test_cflags_cc "$@"
1396     flags=$1
1397     header=$2
1398     condition=$3
1399     shift 3
1400     set -- $($cflags_filter "$flags")
1401     test_cc "$@" <<EOF
1402 #include <$header>
1403 #if !($condition)
1404 #error "unsatisfied condition: $condition"
1405 #endif
1406 EOF
1407 }
1408
1409 check_lib(){
1410     log check_lib "$@"
1411     name="$1"
1412     headers="$2"
1413     funcs="$3"
1414     shift 3
1415     disable $name
1416     check_func_headers "$headers" "$funcs" "$@" &&
1417         enable $name && eval ${name}_extralibs="\$@"
1418 }
1419
1420 check_lib_cpp(){
1421     log check_lib_cpp "$@"
1422     name="$1"
1423     headers="$2"
1424     classes="$3"
1425     shift 3
1426     disable $name
1427     check_class_headers_cpp "$headers" "$classes" "$@" &&
1428         enable $name && eval ${name}_extralibs="\$@"
1429 }
1430
1431 test_pkg_config(){
1432     log test_pkg_config "$@"
1433     name="$1"
1434     pkg_version="$2"
1435     pkg="${2%% *}"
1436     headers="$3"
1437     funcs="$4"
1438     shift 4
1439     disable $name
1440     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1441     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1442     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1443     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1444         enable $name &&
1445         set_sanitized "${name}_cflags"    $pkg_cflags &&
1446         set_sanitized "${name}_extralibs" $pkg_libs
1447 }
1448
1449 check_pkg_config(){
1450     log check_pkg_config "$@"
1451     name="$1"
1452     test_pkg_config "$@" &&
1453         eval add_cflags \$${name}_cflags
1454 }
1455
1456 test_exec(){
1457     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1458 }
1459
1460 check_exec_crash(){
1461     log check_exec_crash "$@"
1462     code=$(cat)
1463
1464     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1465     # are safe but may not be available everywhere.  Thus we use
1466     # raise(SIGTERM) instead.  The check is run in a subshell so we
1467     # can redirect the "Terminated" message from the shell.  SIGBUS
1468     # is not defined by standard C so it is used conditionally.
1469
1470     (test_exec "$@") >> $logfile 2>&1 <<EOF
1471 #include <signal.h>
1472 static void sighandler(int sig){
1473     raise(SIGTERM);
1474 }
1475 int foo(void){
1476     $code
1477 }
1478 int (*func_ptr)(void) = foo;
1479 int main(void){
1480     signal(SIGILL, sighandler);
1481     signal(SIGFPE, sighandler);
1482     signal(SIGSEGV, sighandler);
1483 #ifdef SIGBUS
1484     signal(SIGBUS, sighandler);
1485 #endif
1486     return func_ptr();
1487 }
1488 EOF
1489 }
1490
1491 check_type(){
1492     log check_type "$@"
1493     headers=$1
1494     type=$2
1495     shift 2
1496     disable_sanitized "$type"
1497     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1498 }
1499
1500 check_struct(){
1501     log check_struct "$@"
1502     headers=$1
1503     struct=$2
1504     member=$3
1505     shift 3
1506     disable_sanitized "${struct}_${member}"
1507     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1508         enable_sanitized "${struct}_${member}"
1509 }
1510
1511 check_builtin(){
1512     log check_builtin "$@"
1513     name=$1
1514     headers=$2
1515     builtin=$3
1516     shift 3
1517     disable "$name"
1518     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1519 }
1520
1521 check_compile_assert(){
1522     log check_compile_assert "$@"
1523     name=$1
1524     headers=$2
1525     condition=$3
1526     shift 3
1527     disable "$name"
1528     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1529 }
1530
1531 check_cc(){
1532     log check_cc "$@"
1533     name=$1
1534     shift
1535     disable "$name"
1536     test_code cc "$@" && enable "$name"
1537 }
1538
1539 require(){
1540     log require "$@"
1541     name_version="$1"
1542     name="${1%% *}"
1543     shift
1544     check_lib $name "$@" || die "ERROR: $name_version not found"
1545 }
1546
1547 require_cc(){
1548     log require_cc "$@"
1549     name="$1"
1550     check_cc "$@" || die "ERROR: $name failed"
1551 }
1552
1553 require_cpp(){
1554     log require_cpp "$@"
1555     name_version="$1"
1556     name="${1%% *}"
1557     shift
1558     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1559 }
1560
1561 require_headers(){
1562     log require_headers "$@"
1563     headers="$1"
1564     check_headers "$@" || die "ERROR: $headers not found"
1565 }
1566
1567 require_cpp_condition(){
1568     log require_cpp_condition "$@"
1569     condition="$3"
1570     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1571 }
1572
1573 require_pkg_config(){
1574     log require_pkg_config "$@"
1575     pkg_version="$2"
1576     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1577 }
1578
1579 test_host_cc(){
1580     log test_host_cc "$@"
1581     cat > $TMPC
1582     log_file $TMPC
1583     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1584 }
1585
1586 test_host_cpp(){
1587     log test_host_cpp "$@"
1588     cat > $TMPC
1589     log_file $TMPC
1590     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1591 }
1592
1593 check_host_cppflags(){
1594     log check_host_cppflags "$@"
1595     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1596 #include <stdlib.h>
1597 EOF
1598 }
1599
1600 check_host_cflags(){
1601     log check_host_cflags "$@"
1602     set -- $($host_cflags_filter "$@")
1603     test_host_cc "$@" <<EOF && append host_cflags "$@"
1604 int x;
1605 EOF
1606 }
1607
1608 test_host_cpp_condition(){
1609     log test_host_cpp_condition "$@"
1610     header=$1
1611     condition=$2
1612     shift 2
1613     test_host_cpp "$@" <<EOF
1614 #include <$header>
1615 #if !($condition)
1616 #error "unsatisfied condition: $condition"
1617 #endif
1618 EOF
1619 }
1620
1621 check_host_cpp_condition(){
1622     log check_host_cpp_condition "$@"
1623     name=$1
1624     shift 1
1625     disable $name
1626     test_host_cpp_condition "$@" && enable $name
1627 }
1628
1629 cp_if_changed(){
1630     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1631     mkdir -p "$(dirname $2)"
1632     cp -f "$1" "$2"
1633 }
1634
1635 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1636 # system-dependent things.
1637
1638 AVCODEC_COMPONENTS="
1639     bsfs
1640     decoders
1641     encoders
1642     hwaccels
1643     parsers
1644 "
1645
1646 AVDEVICE_COMPONENTS="
1647     indevs
1648     outdevs
1649 "
1650
1651 AVFILTER_COMPONENTS="
1652     filters
1653 "
1654
1655 AVFORMAT_COMPONENTS="
1656     demuxers
1657     muxers
1658     protocols
1659 "
1660
1661 COMPONENT_LIST="
1662     $AVCODEC_COMPONENTS
1663     $AVDEVICE_COMPONENTS
1664     $AVFILTER_COMPONENTS
1665     $AVFORMAT_COMPONENTS
1666 "
1667
1668 EXAMPLE_LIST="
1669     avio_dir_cmd_example
1670     avio_reading_example
1671     decode_audio_example
1672     decode_video_example
1673     demuxing_decoding_example
1674     encode_audio_example
1675     encode_video_example
1676     extract_mvs_example
1677     filter_audio_example
1678     filtering_audio_example
1679     filtering_video_example
1680     http_multiclient_example
1681     hw_decode_example
1682     metadata_example
1683     muxing_example
1684     qsvdec_example
1685     remuxing_example
1686     resampling_audio_example
1687     scaling_video_example
1688     transcode_aac_example
1689     transcoding_example
1690     vaapi_encode_example
1691     vaapi_transcode_example
1692 "
1693
1694 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1695     alsa
1696     appkit
1697     avfoundation
1698     bzlib
1699     coreimage
1700     iconv
1701     libxcb
1702     libxcb_shm
1703     libxcb_shape
1704     libxcb_xfixes
1705     lzma
1706     schannel
1707     sdl2
1708     securetransport
1709     sndio
1710     xlib
1711     zlib
1712 "
1713
1714 EXTERNAL_LIBRARY_GPL_LIST="
1715     avisynth
1716     frei0r
1717     libcdio
1718     libdavs2
1719     librubberband
1720     libvidstab
1721     libx264
1722     libx265
1723     libxavs
1724     libxavs2
1725     libxvid
1726 "
1727
1728 EXTERNAL_LIBRARY_NONFREE_LIST="
1729     decklink
1730     libfdk_aac
1731     openssl
1732     libtls
1733 "
1734
1735 EXTERNAL_LIBRARY_VERSION3_LIST="
1736     gmp
1737     libaribb24
1738     liblensfun
1739     libopencore_amrnb
1740     libopencore_amrwb
1741     libvmaf
1742     libvo_amrwbenc
1743     mbedtls
1744     rkmpp
1745 "
1746
1747 EXTERNAL_LIBRARY_GPLV3_LIST="
1748     libsmbclient
1749 "
1750
1751 EXTERNAL_LIBRARY_LIST="
1752     $EXTERNAL_LIBRARY_GPL_LIST
1753     $EXTERNAL_LIBRARY_NONFREE_LIST
1754     $EXTERNAL_LIBRARY_VERSION3_LIST
1755     $EXTERNAL_LIBRARY_GPLV3_LIST
1756     chromaprint
1757     gcrypt
1758     gnutls
1759     jni
1760     ladspa
1761     libaom
1762     libass
1763     libbluray
1764     libbs2b
1765     libcaca
1766     libcelt
1767     libcodec2
1768     libdav1d
1769     libdc1394
1770     libdrm
1771     libflite
1772     libfontconfig
1773     libfreetype
1774     libfribidi
1775     libglslang
1776     libgme
1777     libgsm
1778     libiec61883
1779     libilbc
1780     libjack
1781     libklvanc
1782     libkvazaar
1783     libmodplug
1784     libmp3lame
1785     libmysofa
1786     libopencv
1787     libopenh264
1788     libopenjpeg
1789     libopenmpt
1790     libopus
1791     libpulse
1792     librav1e
1793     librsvg
1794     librtmp
1795     libshine
1796     libsmbclient
1797     libsnappy
1798     libsoxr
1799     libspeex
1800     libsrt
1801     libssh
1802     libtensorflow
1803     libtesseract
1804     libtheora
1805     libtwolame
1806     libv4l2
1807     libvorbis
1808     libvpx
1809     libwavpack
1810     libwebp
1811     libxml2
1812     libzimg
1813     libzmq
1814     libzvbi
1815     lv2
1816     mediacodec
1817     openal
1818     opengl
1819     pocketsphinx
1820     vapoursynth
1821 "
1822
1823 HWACCEL_AUTODETECT_LIBRARY_LIST="
1824     amf
1825     audiotoolbox
1826     crystalhd
1827     cuda
1828     cuda_llvm
1829     cuvid
1830     d3d11va
1831     dxva2
1832     ffnvcodec
1833     nvdec
1834     nvenc
1835     vaapi
1836     vdpau
1837     videotoolbox
1838     v4l2_m2m
1839     xvmc
1840 "
1841
1842 # catchall list of things that require external libs to link
1843 EXTRALIBS_LIST="
1844     cpu_init
1845     cws2fws
1846 "
1847
1848 HWACCEL_LIBRARY_NONFREE_LIST="
1849     cuda_nvcc
1850     cuda_sdk
1851     libnpp
1852 "
1853
1854 HWACCEL_LIBRARY_LIST="
1855     $HWACCEL_LIBRARY_NONFREE_LIST
1856     libmfx
1857     mmal
1858     omx
1859     opencl
1860     vulkan
1861 "
1862
1863 DOCUMENT_LIST="
1864     doc
1865     htmlpages
1866     manpages
1867     podpages
1868     txtpages
1869 "
1870
1871 FEATURE_LIST="
1872     ftrapv
1873     gray
1874     hardcoded_tables
1875     omx_rpi
1876     runtime_cpudetect
1877     safe_bitstream_reader
1878     shared
1879     small
1880     static
1881     swscale_alpha
1882 "
1883
1884 # this list should be kept in linking order
1885 LIBRARY_LIST="
1886     avdevice
1887     avfilter
1888     swscale
1889     postproc
1890     avformat
1891     avcodec
1892     swresample
1893     avresample
1894     avutil
1895 "
1896
1897 LICENSE_LIST="
1898     gpl
1899     nonfree
1900     version3
1901 "
1902
1903 PROGRAM_LIST="
1904     ffplay
1905     ffprobe
1906     ffmpeg
1907 "
1908
1909 SUBSYSTEM_LIST="
1910     dct
1911     dwt
1912     error_resilience
1913     faan
1914     fast_unaligned
1915     fft
1916     lsp
1917     lzo
1918     mdct
1919     pixelutils
1920     network
1921     rdft
1922 "
1923
1924 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1925 CONFIG_LIST="
1926     $DOCUMENT_LIST
1927     $EXAMPLE_LIST
1928     $EXTERNAL_LIBRARY_LIST
1929     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1930     $HWACCEL_LIBRARY_LIST
1931     $HWACCEL_AUTODETECT_LIBRARY_LIST
1932     $FEATURE_LIST
1933     $LICENSE_LIST
1934     $LIBRARY_LIST
1935     $PROGRAM_LIST
1936     $SUBSYSTEM_LIST
1937     autodetect
1938     fontconfig
1939     large_tests
1940     linux_perf
1941     memory_poisoning
1942     neon_clobber_test
1943     ossfuzz
1944     pic
1945     thumb
1946     valgrind_backtrace
1947     xmm_clobber_test
1948     $COMPONENT_LIST
1949 "
1950
1951 THREADS_LIST="
1952     pthreads
1953     os2threads
1954     w32threads
1955 "
1956
1957 ATOMICS_LIST="
1958     atomics_gcc
1959     atomics_suncc
1960     atomics_win32
1961 "
1962
1963 AUTODETECT_LIBS="
1964     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1965     $HWACCEL_AUTODETECT_LIBRARY_LIST
1966     $THREADS_LIST
1967 "
1968
1969 ARCH_LIST="
1970     aarch64
1971     alpha
1972     arm
1973     avr32
1974     avr32_ap
1975     avr32_uc
1976     bfin
1977     ia64
1978     m68k
1979     mips
1980     mips64
1981     parisc
1982     ppc
1983     ppc64
1984     s390
1985     sh4
1986     sparc
1987     sparc64
1988     tilegx
1989     tilepro
1990     tomi
1991     x86
1992     x86_32
1993     x86_64
1994 "
1995
1996 ARCH_EXT_LIST_ARM="
1997     armv5te
1998     armv6
1999     armv6t2
2000     armv8
2001     neon
2002     vfp
2003     vfpv3
2004     setend
2005 "
2006
2007 ARCH_EXT_LIST_MIPS="
2008     mipsfpu
2009     mips32r2
2010     mips32r5
2011     mips64r2
2012     mips32r6
2013     mips64r6
2014     mipsdsp
2015     mipsdspr2
2016     msa
2017     msa2
2018 "
2019
2020 ARCH_EXT_LIST_LOONGSON="
2021     loongson2
2022     loongson3
2023     mmi
2024 "
2025
2026 ARCH_EXT_LIST_X86_SIMD="
2027     aesni
2028     amd3dnow
2029     amd3dnowext
2030     avx
2031     avx2
2032     avx512
2033     fma3
2034     fma4
2035     mmx
2036     mmxext
2037     sse
2038     sse2
2039     sse3
2040     sse4
2041     sse42
2042     ssse3
2043     xop
2044 "
2045
2046 ARCH_EXT_LIST_PPC="
2047     altivec
2048     dcbzl
2049     ldbrx
2050     power8
2051     ppc4xx
2052     vsx
2053 "
2054
2055 ARCH_EXT_LIST_X86="
2056     $ARCH_EXT_LIST_X86_SIMD
2057     cpunop
2058     i686
2059 "
2060
2061 ARCH_EXT_LIST="
2062     $ARCH_EXT_LIST_ARM
2063     $ARCH_EXT_LIST_PPC
2064     $ARCH_EXT_LIST_X86
2065     $ARCH_EXT_LIST_MIPS
2066     $ARCH_EXT_LIST_LOONGSON
2067 "
2068
2069 ARCH_FEATURES="
2070     aligned_stack
2071     fast_64bit
2072     fast_clz
2073     fast_cmov
2074     local_aligned
2075     simd_align_16
2076     simd_align_32
2077     simd_align_64
2078 "
2079
2080 BUILTIN_LIST="
2081     atomic_cas_ptr
2082     machine_rw_barrier
2083     MemoryBarrier
2084     mm_empty
2085     rdtsc
2086     sem_timedwait
2087     sync_val_compare_and_swap
2088 "
2089 HAVE_LIST_CMDLINE="
2090     inline_asm
2091     symver
2092     x86asm
2093 "
2094
2095 HAVE_LIST_PUB="
2096     bigendian
2097     fast_unaligned
2098 "
2099
2100 HEADERS_LIST="
2101     arpa_inet_h
2102     asm_types_h
2103     cdio_paranoia_h
2104     cdio_paranoia_paranoia_h
2105     cuda_h
2106     dispatch_dispatch_h
2107     dev_bktr_ioctl_bt848_h
2108     dev_bktr_ioctl_meteor_h
2109     dev_ic_bt8xx_h
2110     dev_video_bktr_ioctl_bt848_h
2111     dev_video_meteor_ioctl_meteor_h
2112     direct_h
2113     dirent_h
2114     dxgidebug_h
2115     dxva_h
2116     ES2_gl_h
2117     gsm_h
2118     io_h
2119     linux_perf_event_h
2120     machine_ioctl_bt848_h
2121     machine_ioctl_meteor_h
2122     malloc_h
2123     opencv2_core_core_c_h
2124     OpenGL_gl3_h
2125     poll_h
2126     sys_param_h
2127     sys_resource_h
2128     sys_select_h
2129     sys_soundcard_h
2130     sys_time_h
2131     sys_un_h
2132     sys_videoio_h
2133     termios_h
2134     udplite_h
2135     unistd_h
2136     valgrind_valgrind_h
2137     windows_h
2138     winsock2_h
2139 "
2140
2141 INTRINSICS_LIST="
2142     intrinsics_neon
2143 "
2144
2145 COMPLEX_FUNCS="
2146     cabs
2147     cexp
2148 "
2149
2150 MATH_FUNCS="
2151     atanf
2152     atan2f
2153     cbrt
2154     cbrtf
2155     copysign
2156     cosf
2157     erf
2158     exp2
2159     exp2f
2160     expf
2161     hypot
2162     isfinite
2163     isinf
2164     isnan
2165     ldexpf
2166     llrint
2167     llrintf
2168     log2
2169     log2f
2170     log10f
2171     lrint
2172     lrintf
2173     powf
2174     rint
2175     round
2176     roundf
2177     sinf
2178     trunc
2179     truncf
2180 "
2181
2182 SYSTEM_FEATURES="
2183     dos_paths
2184     libc_msvcrt
2185     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2186     section_data_rel_ro
2187     threads
2188     uwp
2189     winrt
2190 "
2191
2192 SYSTEM_FUNCS="
2193     access
2194     aligned_malloc
2195     arc4random
2196     clock_gettime
2197     closesocket
2198     CommandLineToArgvW
2199     fcntl
2200     getaddrinfo
2201     gethrtime
2202     getopt
2203     GetModuleHandle
2204     GetProcessAffinityMask
2205     GetProcessMemoryInfo
2206     GetProcessTimes
2207     getrusage
2208     GetStdHandle
2209     GetSystemTimeAsFileTime
2210     gettimeofday
2211     glob
2212     glXGetProcAddress
2213     gmtime_r
2214     inet_aton
2215     isatty
2216     kbhit
2217     localtime_r
2218     lstat
2219     lzo1x_999_compress
2220     mach_absolute_time
2221     MapViewOfFile
2222     memalign
2223     mkstemp
2224     mmap
2225     mprotect
2226     nanosleep
2227     PeekNamedPipe
2228     posix_memalign
2229     pthread_cancel
2230     sched_getaffinity
2231     SecItemImport
2232     SetConsoleTextAttribute
2233     SetConsoleCtrlHandler
2234     SetDllDirectory
2235     setmode
2236     setrlimit
2237     Sleep
2238     strerror_r
2239     sysconf
2240     sysctl
2241     usleep
2242     UTGetOSTypeFromString
2243     VirtualAlloc
2244     wglGetProcAddress
2245 "
2246
2247 SYSTEM_LIBRARIES="
2248     bcrypt
2249     vaapi_drm
2250     vaapi_x11
2251     vdpau_x11
2252 "
2253
2254 TOOLCHAIN_FEATURES="
2255     as_arch_directive
2256     as_dn_directive
2257     as_fpu_directive
2258     as_func
2259     as_object_arch
2260     asm_mod_q
2261     blocks_extension
2262     ebp_available
2263     ebx_available
2264     gnu_as
2265     gnu_windres
2266     ibm_asm
2267     inline_asm_direct_symbol_refs
2268     inline_asm_labels
2269     inline_asm_nonlocal_labels
2270     pragma_deprecated
2271     rsync_contimeout
2272     symver_asm_label
2273     symver_gnu_asm
2274     vfp_args
2275     xform_asm
2276     xmm_clobbers
2277 "
2278
2279 TYPES_LIST="
2280     kCMVideoCodecType_HEVC
2281     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2282     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2283     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2284     kCVImageBufferTransferFunction_Linear
2285     socklen_t
2286     struct_addrinfo
2287     struct_group_source_req
2288     struct_ip_mreq_source
2289     struct_ipv6_mreq
2290     struct_msghdr_msg_flags
2291     struct_pollfd
2292     struct_rusage_ru_maxrss
2293     struct_sctp_event_subscribe
2294     struct_sockaddr_in6
2295     struct_sockaddr_sa_len
2296     struct_sockaddr_storage
2297     struct_stat_st_mtim_tv_nsec
2298     struct_v4l2_frmivalenum_discrete
2299 "
2300
2301 HAVE_LIST="
2302     $ARCH_EXT_LIST
2303     $(add_suffix _external $ARCH_EXT_LIST)
2304     $(add_suffix _inline   $ARCH_EXT_LIST)
2305     $ARCH_FEATURES
2306     $BUILTIN_LIST
2307     $COMPLEX_FUNCS
2308     $HAVE_LIST_CMDLINE
2309     $HAVE_LIST_PUB
2310     $HEADERS_LIST
2311     $INTRINSICS_LIST
2312     $MATH_FUNCS
2313     $SYSTEM_FEATURES
2314     $SYSTEM_FUNCS
2315     $SYSTEM_LIBRARIES
2316     $THREADS_LIST
2317     $TOOLCHAIN_FEATURES
2318     $TYPES_LIST
2319     makeinfo
2320     makeinfo_html
2321     opencl_d3d11
2322     opencl_drm_arm
2323     opencl_drm_beignet
2324     opencl_dxva2
2325     opencl_vaapi_beignet
2326     opencl_vaapi_intel_media
2327     perl
2328     pod2man
2329     texi2html
2330 "
2331
2332 # options emitted with CONFIG_ prefix but not available on the command line
2333 CONFIG_EXTRA="
2334     aandcttables
2335     ac3dsp
2336     adts_header
2337     audio_frame_queue
2338     audiodsp
2339     blockdsp
2340     bswapdsp
2341     cabac
2342     cbs
2343     cbs_av1
2344     cbs_h264
2345     cbs_h265
2346     cbs_jpeg
2347     cbs_mpeg2
2348     cbs_vp9
2349     dirac_parse
2350     dnn
2351     dvprofile
2352     exif
2353     faandct
2354     faanidct
2355     fdctdsp
2356     flacdsp
2357     fmtconvert
2358     frame_thread_encoder
2359     g722dsp
2360     golomb
2361     gplv3
2362     h263dsp
2363     h264chroma
2364     h264dsp
2365     h264parse
2366     h264pred
2367     h264qpel
2368     hevcparse
2369     hpeldsp
2370     huffman
2371     huffyuvdsp
2372     huffyuvencdsp
2373     idctdsp
2374     iirfilter
2375     mdct15
2376     intrax8
2377     iso_media
2378     ividsp
2379     jpegtables
2380     lgplv3
2381     libx262
2382     llauddsp
2383     llviddsp
2384     llvidencdsp
2385     lpc
2386     lzf
2387     me_cmp
2388     mpeg_er
2389     mpegaudio
2390     mpegaudiodsp
2391     mpegaudioheader
2392     mpegvideo
2393     mpegvideoenc
2394     mss34dsp
2395     pixblockdsp
2396     qpeldsp
2397     qsv
2398     qsvdec
2399     qsvenc
2400     qsvvpp
2401     rangecoder
2402     riffdec
2403     riffenc
2404     rtpdec
2405     rtpenc_chain
2406     rv34dsp
2407     scene_sad
2408     sinewin
2409     snappy
2410     srtp
2411     startcode
2412     texturedsp
2413     texturedspenc
2414     tpeldsp
2415     vaapi_1
2416     vaapi_encode
2417     vc1dsp
2418     videodsp
2419     vp3dsp
2420     vp56dsp
2421     vp8dsp
2422     wma_freqs
2423     wmv2dsp
2424 "
2425
2426 CMDLINE_SELECT="
2427     $ARCH_EXT_LIST
2428     $CONFIG_LIST
2429     $HAVE_LIST_CMDLINE
2430     $THREADS_LIST
2431     asm
2432     cross_compile
2433     debug
2434     extra_warnings
2435     logging
2436     lto
2437     optimizations
2438     rpath
2439     stripping
2440 "
2441
2442 PATHS_LIST="
2443     bindir
2444     datadir
2445     docdir
2446     incdir
2447     libdir
2448     mandir
2449     pkgconfigdir
2450     prefix
2451     shlibdir
2452     install_name_dir
2453 "
2454
2455 CMDLINE_SET="
2456     $PATHS_LIST
2457     ar
2458     arch
2459     as
2460     assert_level
2461     build_suffix
2462     cc
2463     objcc
2464     cpu
2465     cross_prefix
2466     custom_allocator
2467     cxx
2468     dep_cc
2469     doxygen
2470     env
2471     extra_version
2472     gas
2473     host_cc
2474     host_cflags
2475     host_extralibs
2476     host_ld
2477     host_ldflags
2478     host_os
2479     ignore_tests
2480     install
2481     ld
2482     ln_s
2483     logfile
2484     malloc_prefix
2485     nm
2486     optflags
2487     nvcc
2488     nvccflags
2489     pkg_config
2490     pkg_config_flags
2491     progs_suffix
2492     random_seed
2493     ranlib
2494     samples
2495     strip
2496     sws_max_filter_size
2497     sysinclude
2498     sysroot
2499     target_exec
2500     target_os
2501     target_path
2502     target_samples
2503     tempprefix
2504     toolchain
2505     valgrind
2506     windres
2507     x86asmexe
2508 "
2509
2510 CMDLINE_APPEND="
2511     extra_cflags
2512     extra_cxxflags
2513     extra_objcflags
2514     host_cppflags
2515 "
2516
2517 # code dependency declarations
2518
2519 # architecture extensions
2520
2521 armv5te_deps="arm"
2522 armv6_deps="arm"
2523 armv6t2_deps="arm"
2524 armv8_deps="aarch64"
2525 neon_deps_any="aarch64 arm"
2526 intrinsics_neon_deps="neon"
2527 vfp_deps_any="aarch64 arm"
2528 vfpv3_deps="vfp"
2529 setend_deps="arm"
2530
2531 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2532
2533 altivec_deps="ppc"
2534 dcbzl_deps="ppc"
2535 ldbrx_deps="ppc"
2536 ppc4xx_deps="ppc"
2537 vsx_deps="altivec"
2538 power8_deps="vsx"
2539
2540 loongson2_deps="mips"
2541 loongson3_deps="mips"
2542 mips32r2_deps="mips"
2543 mips32r5_deps="mips"
2544 mips32r6_deps="mips"
2545 mips64r2_deps="mips"
2546 mips64r6_deps="mips"
2547 mipsfpu_deps="mips"
2548 mipsdsp_deps="mips"
2549 mipsdspr2_deps="mips"
2550 mmi_deps="mips"
2551 msa_deps="mipsfpu"
2552 msa2_deps="msa"
2553
2554 cpunop_deps="i686"
2555 x86_64_select="i686"
2556 x86_64_suggest="fast_cmov"
2557
2558 amd3dnow_deps="mmx"
2559 amd3dnowext_deps="amd3dnow"
2560 i686_deps="x86"
2561 mmx_deps="x86"
2562 mmxext_deps="mmx"
2563 sse_deps="mmxext"
2564 sse2_deps="sse"
2565 sse3_deps="sse2"
2566 ssse3_deps="sse3"
2567 sse4_deps="ssse3"
2568 sse42_deps="sse4"
2569 aesni_deps="sse42"
2570 avx_deps="sse42"
2571 xop_deps="avx"
2572 fma3_deps="avx"
2573 fma4_deps="avx"
2574 avx2_deps="avx"
2575 avx512_deps="avx2"
2576
2577 mmx_external_deps="x86asm"
2578 mmx_inline_deps="inline_asm x86"
2579 mmx_suggest="mmx_external mmx_inline"
2580
2581 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2582     eval dep=\$${ext}_deps
2583     eval ${ext}_external_deps='"${dep}_external"'
2584     eval ${ext}_inline_deps='"${dep}_inline"'
2585     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2586 done
2587
2588 aligned_stack_if_any="aarch64 ppc x86"
2589 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2590 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2591 fast_unaligned_if_any="aarch64 ppc x86"
2592 simd_align_16_if_any="altivec neon sse"
2593 simd_align_32_if_any="avx"
2594 simd_align_64_if_any="avx512"
2595
2596 # system capabilities
2597 linux_perf_deps="linux_perf_event_h"
2598 symver_if_any="symver_asm_label symver_gnu_asm"
2599 valgrind_backtrace_conflict="optimizations"
2600 valgrind_backtrace_deps="valgrind_valgrind_h"
2601
2602 # threading support
2603 atomics_gcc_if="sync_val_compare_and_swap"
2604 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2605 atomics_win32_if="MemoryBarrier"
2606 atomics_native_if_any="$ATOMICS_LIST"
2607 w32threads_deps="atomics_native"
2608 threads_if_any="$THREADS_LIST"
2609
2610 # subsystems
2611 cbs_av1_select="cbs"
2612 cbs_h264_select="cbs"
2613 cbs_h265_select="cbs"
2614 cbs_jpeg_select="cbs"
2615 cbs_mpeg2_select="cbs"
2616 cbs_vp9_select="cbs"
2617 dct_select="rdft"
2618 dirac_parse_select="golomb"
2619 dnn_suggest="libtensorflow"
2620 error_resilience_select="me_cmp"
2621 faandct_deps="faan"
2622 faandct_select="fdctdsp"
2623 faanidct_deps="faan"
2624 faanidct_select="idctdsp"
2625 h264dsp_select="startcode"
2626 hevcparse_select="golomb"
2627 frame_thread_encoder_deps="encoders threads"
2628 intrax8_select="blockdsp idctdsp"
2629 mdct_select="fft"
2630 mdct15_select="fft"
2631 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2632 mpeg_er_select="error_resilience"
2633 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2634 mpegaudiodsp_select="dct"
2635 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2636 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2637 vc1dsp_select="h264chroma qpeldsp startcode"
2638 rdft_select="fft"
2639
2640 # decoders / encoders
2641 aac_decoder_select="adts_header mdct15 mdct sinewin"
2642 aac_fixed_decoder_select="adts_header mdct sinewin"
2643 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2644 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2645 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2646 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2647 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2648 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2649 acelp_kelvin_decoder_select="audiodsp"
2650 adpcm_g722_decoder_select="g722dsp"
2651 adpcm_g722_encoder_select="g722dsp"
2652 aic_decoder_select="golomb idctdsp"
2653 alac_encoder_select="lpc"
2654 als_decoder_select="bswapdsp"
2655 amrnb_decoder_select="lsp"
2656 amrwb_decoder_select="lsp"
2657 amv_decoder_select="sp5x_decoder exif"
2658 amv_encoder_select="jpegtables mpegvideoenc"
2659 ape_decoder_select="bswapdsp llauddsp"
2660 apng_decoder_deps="zlib"
2661 apng_encoder_deps="zlib"
2662 apng_encoder_select="llvidencdsp"
2663 aptx_decoder_select="audio_frame_queue"
2664 aptx_encoder_select="audio_frame_queue"
2665 aptx_hd_decoder_select="audio_frame_queue"
2666 aptx_hd_encoder_select="audio_frame_queue"
2667 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2668 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2669 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2670 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2671 atrac1_decoder_select="mdct sinewin"
2672 atrac3_decoder_select="mdct"
2673 atrac3al_decoder_select="mdct"
2674 atrac3p_decoder_select="mdct sinewin"
2675 atrac3pal_decoder_select="mdct sinewin"
2676 atrac9_decoder_select="mdct"
2677 avrn_decoder_select="exif jpegtables"
2678 bink_decoder_select="blockdsp hpeldsp"
2679 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2680 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2681 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2682 clearvideo_decoder_select="idctdsp"
2683 cllc_decoder_select="bswapdsp"
2684 comfortnoise_encoder_select="lpc"
2685 cook_decoder_select="audiodsp mdct sinewin"
2686 cscd_decoder_select="lzo"
2687 cscd_decoder_suggest="zlib"
2688 dca_decoder_select="mdct"
2689 dca_encoder_select="mdct"
2690 dds_decoder_select="texturedsp"
2691 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2692 dnxhd_decoder_select="blockdsp idctdsp"
2693 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2694 dolby_e_decoder_select="mdct"
2695 dvvideo_decoder_select="dvprofile idctdsp"
2696 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2697 dxa_decoder_deps="zlib"
2698 dxv_decoder_select="lzf texturedsp"
2699 eac3_decoder_select="ac3_decoder"
2700 eac3_encoder_select="ac3_encoder"
2701 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2702 eatgq_decoder_select="aandcttables"
2703 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2704 exr_decoder_deps="zlib"
2705 ffv1_decoder_select="rangecoder"
2706 ffv1_encoder_select="rangecoder"
2707 ffvhuff_decoder_select="huffyuv_decoder"
2708 ffvhuff_encoder_select="huffyuv_encoder"
2709 fic_decoder_select="golomb"
2710 flac_decoder_select="flacdsp"
2711 flac_encoder_select="bswapdsp flacdsp lpc"
2712 flashsv2_decoder_deps="zlib"
2713 flashsv2_encoder_deps="zlib"
2714 flashsv_decoder_deps="zlib"
2715 flashsv_encoder_deps="zlib"
2716 flv_decoder_select="h263_decoder"
2717 flv_encoder_select="h263_encoder"
2718 fourxm_decoder_select="blockdsp bswapdsp"
2719 fraps_decoder_select="bswapdsp huffman"
2720 g2m_decoder_deps="zlib"
2721 g2m_decoder_select="blockdsp idctdsp jpegtables"
2722 g729_decoder_select="audiodsp"
2723 h261_decoder_select="mpegvideo"
2724 h261_encoder_select="mpegvideoenc"
2725 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2726 h263_encoder_select="h263dsp mpegvideoenc"
2727 h263i_decoder_select="h263_decoder"
2728 h263p_decoder_select="h263_decoder"
2729 h263p_encoder_select="h263_encoder"
2730 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2731 h264_decoder_suggest="error_resilience"
2732 hap_decoder_select="snappy texturedsp"
2733 hap_encoder_deps="libsnappy"
2734 hap_encoder_select="texturedspenc"
2735 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2736 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2737 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2738 hymt_decoder_select="huffyuv_decoder"
2739 iac_decoder_select="imc_decoder"
2740 imc_decoder_select="bswapdsp fft mdct sinewin"
2741 imm4_decoder_select="bswapdsp"
2742 imm5_decoder_select="h264_decoder hevc_decoder"
2743 indeo3_decoder_select="hpeldsp"
2744 indeo4_decoder_select="ividsp"
2745 indeo5_decoder_select="ividsp"
2746 interplay_video_decoder_select="hpeldsp"
2747 jpegls_decoder_select="mjpeg_decoder"
2748 jv_decoder_select="blockdsp"
2749 lagarith_decoder_select="llviddsp"
2750 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2751 lscr_decoder_deps="zlib"
2752 magicyuv_decoder_select="llviddsp"
2753 magicyuv_encoder_select="llvidencdsp"
2754 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2755 metasound_decoder_select="lsp mdct sinewin"
2756 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2757 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2758 mjpeg_encoder_select="jpegtables mpegvideoenc"
2759 mjpegb_decoder_select="mjpeg_decoder"
2760 mlp_decoder_select="mlp_parser"
2761 mlp_encoder_select="lpc audio_frame_queue"
2762 motionpixels_decoder_select="bswapdsp"
2763 mp1_decoder_select="mpegaudio"
2764 mp1float_decoder_select="mpegaudio"
2765 mp2_decoder_select="mpegaudio"
2766 mp2float_decoder_select="mpegaudio"
2767 mp3_decoder_select="mpegaudio"
2768 mp3adu_decoder_select="mpegaudio"
2769 mp3adufloat_decoder_select="mpegaudio"
2770 mp3float_decoder_select="mpegaudio"
2771 mp3on4_decoder_select="mpegaudio"
2772 mp3on4float_decoder_select="mpegaudio"
2773 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2774 mpc8_decoder_select="mpegaudiodsp"
2775 mpegvideo_decoder_select="mpegvideo"
2776 mpeg1video_decoder_select="mpegvideo"
2777 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2778 mpeg2video_decoder_select="mpegvideo"
2779 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2780 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2781 mpeg4_encoder_select="h263_encoder"
2782 msa1_decoder_select="mss34dsp"
2783 mscc_decoder_deps="zlib"
2784 msmpeg4v1_decoder_select="h263_decoder"
2785 msmpeg4v2_decoder_select="h263_decoder"
2786 msmpeg4v2_encoder_select="h263_encoder"
2787 msmpeg4v3_decoder_select="h263_decoder"
2788 msmpeg4v3_encoder_select="h263_encoder"
2789 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2790 mts2_decoder_select="mss34dsp"
2791 mvha_decoder_deps="zlib"
2792 mwsc_decoder_deps="zlib"
2793 mxpeg_decoder_select="mjpeg_decoder"
2794 nellymoser_decoder_select="mdct sinewin"
2795 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2796 nuv_decoder_select="idctdsp lzo"
2797 on2avc_decoder_select="mdct"
2798 opus_decoder_deps="swresample"
2799 opus_decoder_select="mdct15"
2800 opus_encoder_select="audio_frame_queue mdct15"
2801 png_decoder_deps="zlib"
2802 png_encoder_deps="zlib"
2803 png_encoder_select="llvidencdsp"
2804 prores_decoder_select="blockdsp idctdsp"
2805 prores_encoder_select="fdctdsp"
2806 qcelp_decoder_select="lsp"
2807 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2808 ra_144_decoder_select="audiodsp"
2809 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2810 ralf_decoder_select="golomb"
2811 rasc_decoder_deps="zlib"
2812 rawvideo_decoder_select="bswapdsp"
2813 rscc_decoder_deps="zlib"
2814 rtjpeg_decoder_select="me_cmp"
2815 rv10_decoder_select="h263_decoder"
2816 rv10_encoder_select="h263_encoder"
2817 rv20_decoder_select="h263_decoder"
2818 rv20_encoder_select="h263_encoder"
2819 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2820 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2821 screenpresso_decoder_deps="zlib"
2822 shorten_decoder_select="bswapdsp"
2823 sipr_decoder_select="lsp"
2824 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2825 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2826 sonic_decoder_select="golomb rangecoder"
2827 sonic_encoder_select="golomb rangecoder"
2828 sonic_ls_encoder_select="golomb rangecoder"
2829 sp5x_decoder_select="mjpeg_decoder"
2830 speedhq_decoder_select="mpegvideo"
2831 srgc_decoder_deps="zlib"
2832 svq1_decoder_select="hpeldsp"
2833 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2834 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2835 svq3_decoder_suggest="zlib"
2836 tak_decoder_select="audiodsp"
2837 tdsc_decoder_deps="zlib"
2838 tdsc_decoder_select="mjpeg_decoder"
2839 theora_decoder_select="vp3_decoder"
2840 thp_decoder_select="mjpeg_decoder"
2841 tiff_decoder_select="mjpeg_decoder"
2842 tiff_decoder_suggest="zlib lzma"
2843 tiff_encoder_suggest="zlib"
2844 truehd_decoder_select="mlp_parser"
2845 truehd_encoder_select="lpc audio_frame_queue"
2846 truemotion2_decoder_select="bswapdsp"
2847 truespeech_decoder_select="bswapdsp"
2848 tscc_decoder_deps="zlib"
2849 twinvq_decoder_select="mdct lsp sinewin"
2850 txd_decoder_select="texturedsp"
2851 utvideo_decoder_select="bswapdsp llviddsp"
2852 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2853 vble_decoder_select="llviddsp"
2854 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2855 vc1image_decoder_select="vc1_decoder"
2856 vorbis_decoder_select="mdct"
2857 vorbis_encoder_select="audio_frame_queue mdct"
2858 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2859 vp4_decoder_select="vp3_decoder"
2860 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2861 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2862 vp6a_decoder_select="vp6_decoder"
2863 vp6f_decoder_select="vp6_decoder"
2864 vp7_decoder_select="h264pred videodsp vp8dsp"
2865 vp8_decoder_select="h264pred videodsp vp8dsp"
2866 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2867 wcmv_decoder_deps="zlib"
2868 webp_decoder_select="vp8_decoder exif"
2869 wmalossless_decoder_select="llauddsp"
2870 wmapro_decoder_select="mdct sinewin wma_freqs"
2871 wmav1_decoder_select="mdct sinewin wma_freqs"
2872 wmav1_encoder_select="mdct sinewin wma_freqs"
2873 wmav2_decoder_select="mdct sinewin wma_freqs"
2874 wmav2_encoder_select="mdct sinewin wma_freqs"
2875 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2876 wmv1_decoder_select="h263_decoder"
2877 wmv1_encoder_select="h263_encoder"
2878 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2879 wmv2_encoder_select="h263_encoder wmv2dsp"
2880 wmv3_decoder_select="vc1_decoder"
2881 wmv3image_decoder_select="wmv3_decoder"
2882 xma1_decoder_select="wmapro_decoder"
2883 xma2_decoder_select="wmapro_decoder"
2884 ylc_decoder_select="bswapdsp"
2885 zerocodec_decoder_deps="zlib"
2886 zlib_decoder_deps="zlib"
2887 zlib_encoder_deps="zlib"
2888 zmbv_decoder_deps="zlib"
2889 zmbv_encoder_deps="zlib"
2890
2891 # hardware accelerators
2892 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2893 cuda_deps="ffnvcodec"
2894 cuvid_deps="ffnvcodec"
2895 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2896 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2897 ffnvcodec_deps_any="libdl LoadLibrary"
2898 nvdec_deps="ffnvcodec"
2899 vaapi_x11_deps="xlib"
2900 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2901 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2902 xvmc_deps="X11_extensions_XvMClib_h"
2903
2904 h263_vaapi_hwaccel_deps="vaapi"
2905 h263_vaapi_hwaccel_select="h263_decoder"
2906 h263_videotoolbox_hwaccel_deps="videotoolbox"
2907 h263_videotoolbox_hwaccel_select="h263_decoder"
2908 h264_d3d11va_hwaccel_deps="d3d11va"
2909 h264_d3d11va_hwaccel_select="h264_decoder"
2910 h264_d3d11va2_hwaccel_deps="d3d11va"
2911 h264_d3d11va2_hwaccel_select="h264_decoder"
2912 h264_dxva2_hwaccel_deps="dxva2"
2913 h264_dxva2_hwaccel_select="h264_decoder"
2914 h264_nvdec_hwaccel_deps="nvdec"
2915 h264_nvdec_hwaccel_select="h264_decoder"
2916 h264_vaapi_hwaccel_deps="vaapi"
2917 h264_vaapi_hwaccel_select="h264_decoder"
2918 h264_vdpau_hwaccel_deps="vdpau"
2919 h264_vdpau_hwaccel_select="h264_decoder"
2920 h264_videotoolbox_hwaccel_deps="videotoolbox"
2921 h264_videotoolbox_hwaccel_select="h264_decoder"
2922 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2923 hevc_d3d11va_hwaccel_select="hevc_decoder"
2924 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2925 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2926 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2927 hevc_dxva2_hwaccel_select="hevc_decoder"
2928 hevc_nvdec_hwaccel_deps="nvdec"
2929 hevc_nvdec_hwaccel_select="hevc_decoder"
2930 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2931 hevc_vaapi_hwaccel_select="hevc_decoder"
2932 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2933 hevc_vdpau_hwaccel_select="hevc_decoder"
2934 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2935 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2936 mjpeg_nvdec_hwaccel_deps="nvdec"
2937 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2938 mjpeg_vaapi_hwaccel_deps="vaapi"
2939 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2940 mpeg_xvmc_hwaccel_deps="xvmc"
2941 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2942 mpeg1_nvdec_hwaccel_deps="nvdec"
2943 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2944 mpeg1_vdpau_hwaccel_deps="vdpau"
2945 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2946 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2947 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2948 mpeg1_xvmc_hwaccel_deps="xvmc"
2949 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2950 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2951 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2953 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2954 mpeg2_dxva2_hwaccel_deps="dxva2"
2955 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2956 mpeg2_nvdec_hwaccel_deps="nvdec"
2957 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_vaapi_hwaccel_deps="vaapi"
2959 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_vdpau_hwaccel_deps="vdpau"
2961 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2962 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2963 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2964 mpeg2_xvmc_hwaccel_deps="xvmc"
2965 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2966 mpeg4_nvdec_hwaccel_deps="nvdec"
2967 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2968 mpeg4_vaapi_hwaccel_deps="vaapi"
2969 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2970 mpeg4_vdpau_hwaccel_deps="vdpau"
2971 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2972 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2973 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2974 vc1_d3d11va_hwaccel_deps="d3d11va"
2975 vc1_d3d11va_hwaccel_select="vc1_decoder"
2976 vc1_d3d11va2_hwaccel_deps="d3d11va"
2977 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2978 vc1_dxva2_hwaccel_deps="dxva2"
2979 vc1_dxva2_hwaccel_select="vc1_decoder"
2980 vc1_nvdec_hwaccel_deps="nvdec"
2981 vc1_nvdec_hwaccel_select="vc1_decoder"
2982 vc1_vaapi_hwaccel_deps="vaapi"
2983 vc1_vaapi_hwaccel_select="vc1_decoder"
2984 vc1_vdpau_hwaccel_deps="vdpau"
2985 vc1_vdpau_hwaccel_select="vc1_decoder"
2986 vp8_nvdec_hwaccel_deps="nvdec"
2987 vp8_nvdec_hwaccel_select="vp8_decoder"
2988 vp8_vaapi_hwaccel_deps="vaapi"
2989 vp8_vaapi_hwaccel_select="vp8_decoder"
2990 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2991 vp9_d3d11va_hwaccel_select="vp9_decoder"
2992 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2993 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2994 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2995 vp9_dxva2_hwaccel_select="vp9_decoder"
2996 vp9_nvdec_hwaccel_deps="nvdec"
2997 vp9_nvdec_hwaccel_select="vp9_decoder"
2998 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2999 vp9_vaapi_hwaccel_select="vp9_decoder"
3000 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3001 vp9_vdpau_hwaccel_select="vp9_decoder"
3002 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3003 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3004 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3005 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3006 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3007 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3008
3009 # hardware-accelerated codecs
3010 omx_deps="libdl pthreads"
3011 omx_rpi_select="omx"
3012 qsv_deps="libmfx"
3013 qsvdec_select="qsv"
3014 qsvenc_select="qsv"
3015 qsvvpp_select="qsv"
3016 vaapi_encode_deps="vaapi"
3017 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3018
3019 hwupload_cuda_filter_deps="ffnvcodec"
3020 scale_npp_filter_deps="ffnvcodec libnpp"
3021 scale_cuda_filter_deps="ffnvcodec"
3022 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3023 thumbnail_cuda_filter_deps="ffnvcodec"
3024 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3025 transpose_npp_filter_deps="ffnvcodec libnpp"
3026
3027 amf_deps_any="libdl LoadLibrary"
3028 nvenc_deps="ffnvcodec"
3029 nvenc_deps_any="libdl LoadLibrary"
3030 nvenc_encoder_deps="nvenc"
3031
3032 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3033 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3034 h264_amf_encoder_deps="amf"
3035 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3036 h264_cuvid_decoder_deps="cuvid"
3037 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3038 h264_mediacodec_decoder_deps="mediacodec"
3039 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3040 h264_mmal_decoder_deps="mmal"
3041 h264_nvenc_encoder_deps="nvenc"
3042 h264_omx_encoder_deps="omx"
3043 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3044 h264_qsv_encoder_select="qsvenc"
3045 h264_rkmpp_decoder_deps="rkmpp"
3046 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3047 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3048 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3049 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3050 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3051 hevc_amf_encoder_deps="amf"
3052 hevc_cuvid_decoder_deps="cuvid"
3053 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3054 hevc_mediacodec_decoder_deps="mediacodec"
3055 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3056 hevc_nvenc_encoder_deps="nvenc"
3057 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3058 hevc_qsv_encoder_select="hevcparse qsvenc"
3059 hevc_rkmpp_decoder_deps="rkmpp"
3060 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3061 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3062 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3063 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3064 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3065 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3066 mjpeg_cuvid_decoder_deps="cuvid"
3067 mjpeg_qsv_decoder_select="qsvdec"
3068 mjpeg_qsv_encoder_deps="libmfx"
3069 mjpeg_qsv_encoder_select="qsvenc"
3070 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3071 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3072 mpeg1_cuvid_decoder_deps="cuvid"
3073 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3074 mpeg2_crystalhd_decoder_select="crystalhd"
3075 mpeg2_cuvid_decoder_deps="cuvid"
3076 mpeg2_mmal_decoder_deps="mmal"
3077 mpeg2_mediacodec_decoder_deps="mediacodec"
3078 mpeg2_qsv_decoder_select="qsvdec"
3079 mpeg2_qsv_encoder_select="qsvenc"
3080 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3081 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3082 mpeg4_crystalhd_decoder_select="crystalhd"
3083 mpeg4_cuvid_decoder_deps="cuvid"
3084 mpeg4_mediacodec_decoder_deps="mediacodec"
3085 mpeg4_mmal_decoder_deps="mmal"
3086 mpeg4_omx_encoder_deps="omx"
3087 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3088 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3089 msmpeg4_crystalhd_decoder_select="crystalhd"
3090 nvenc_h264_encoder_select="h264_nvenc_encoder"
3091 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3092 vc1_crystalhd_decoder_select="crystalhd"
3093 vc1_cuvid_decoder_deps="cuvid"
3094 vc1_mmal_decoder_deps="mmal"
3095 vc1_qsv_decoder_select="qsvdec"
3096 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3097 vp8_cuvid_decoder_deps="cuvid"
3098 vp8_mediacodec_decoder_deps="mediacodec"
3099 vp8_qsv_decoder_select="qsvdec"
3100 vp8_rkmpp_decoder_deps="rkmpp"
3101 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3102 vp8_vaapi_encoder_select="vaapi_encode"
3103 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3104 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3105 vp9_cuvid_decoder_deps="cuvid"
3106 vp9_mediacodec_decoder_deps="mediacodec"
3107 vp9_qsv_decoder_select="qsvdec"
3108 vp9_rkmpp_decoder_deps="rkmpp"
3109 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3110 vp9_vaapi_encoder_select="vaapi_encode"
3111 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3112 vp9_qsv_encoder_select="qsvenc"
3113 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3114 wmv3_crystalhd_decoder_select="crystalhd"
3115
3116 # parsers
3117 aac_parser_select="adts_header"
3118 av1_parser_select="cbs_av1"
3119 h264_parser_select="golomb h264dsp h264parse"
3120 hevc_parser_select="hevcparse"
3121 mpegaudio_parser_select="mpegaudioheader"
3122 mpegvideo_parser_select="mpegvideo"
3123 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3124 vc1_parser_select="vc1dsp"
3125
3126 # bitstream_filters
3127 aac_adtstoasc_bsf_select="adts_header"
3128 av1_frame_merge_bsf_select="cbs_av1"
3129 av1_frame_split_bsf_select="cbs_av1"
3130 av1_metadata_bsf_select="cbs_av1"
3131 eac3_core_bsf_select="ac3_parser"
3132 filter_units_bsf_select="cbs"
3133 h264_metadata_bsf_deps="const_nan"
3134 h264_metadata_bsf_select="cbs_h264"
3135 h264_redundant_pps_bsf_select="cbs_h264"
3136 hevc_metadata_bsf_select="cbs_h265"
3137 mjpeg2jpeg_bsf_select="jpegtables"
3138 mpeg2_metadata_bsf_select="cbs_mpeg2"
3139 trace_headers_bsf_select="cbs"
3140 vp9_metadata_bsf_select="cbs_vp9"
3141
3142 # external libraries
3143 aac_at_decoder_deps="audiotoolbox"
3144 aac_at_decoder_select="aac_adtstoasc_bsf"
3145 ac3_at_decoder_deps="audiotoolbox"
3146 ac3_at_decoder_select="ac3_parser"
3147 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3148 alac_at_decoder_deps="audiotoolbox"
3149 amr_nb_at_decoder_deps="audiotoolbox"
3150 avisynth_deps_any="libdl LoadLibrary"
3151 avisynth_demuxer_deps="avisynth"
3152 avisynth_demuxer_select="riffdec"
3153 eac3_at_decoder_deps="audiotoolbox"
3154 eac3_at_decoder_select="ac3_parser"
3155 gsm_ms_at_decoder_deps="audiotoolbox"
3156 ilbc_at_decoder_deps="audiotoolbox"
3157 mp1_at_decoder_deps="audiotoolbox"
3158 mp2_at_decoder_deps="audiotoolbox"
3159 mp3_at_decoder_deps="audiotoolbox"
3160 mp1_at_decoder_select="mpegaudioheader"
3161 mp2_at_decoder_select="mpegaudioheader"
3162 mp3_at_decoder_select="mpegaudioheader"
3163 pcm_alaw_at_decoder_deps="audiotoolbox"
3164 pcm_mulaw_at_decoder_deps="audiotoolbox"
3165 qdmc_decoder_select="fft"
3166 qdmc_at_decoder_deps="audiotoolbox"
3167 qdm2_at_decoder_deps="audiotoolbox"
3168 aac_at_encoder_deps="audiotoolbox"
3169 aac_at_encoder_select="audio_frame_queue"
3170 alac_at_encoder_deps="audiotoolbox"
3171 alac_at_encoder_select="audio_frame_queue"
3172 ilbc_at_encoder_deps="audiotoolbox"
3173 ilbc_at_encoder_select="audio_frame_queue"
3174 pcm_alaw_at_encoder_deps="audiotoolbox"
3175 pcm_alaw_at_encoder_select="audio_frame_queue"
3176 pcm_mulaw_at_encoder_deps="audiotoolbox"
3177 pcm_mulaw_at_encoder_select="audio_frame_queue"
3178 chromaprint_muxer_deps="chromaprint"
3179 h264_videotoolbox_encoder_deps="pthreads"
3180 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3181 hevc_videotoolbox_encoder_deps="pthreads"
3182 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3183 libaom_av1_decoder_deps="libaom"
3184 libaom_av1_encoder_deps="libaom"
3185 libaom_av1_encoder_select="extract_extradata_bsf"
3186 libaribb24_decoder_deps="libaribb24"
3187 libcelt_decoder_deps="libcelt"
3188 libcodec2_decoder_deps="libcodec2"
3189 libcodec2_encoder_deps="libcodec2"
3190 libdav1d_decoder_deps="libdav1d"
3191 libdavs2_decoder_deps="libdavs2"
3192 libfdk_aac_decoder_deps="libfdk_aac"
3193 libfdk_aac_encoder_deps="libfdk_aac"
3194 libfdk_aac_encoder_select="audio_frame_queue"
3195 libgme_demuxer_deps="libgme"
3196 libgsm_decoder_deps="libgsm"
3197 libgsm_encoder_deps="libgsm"
3198 libgsm_ms_decoder_deps="libgsm"
3199 libgsm_ms_encoder_deps="libgsm"
3200 libilbc_decoder_deps="libilbc"
3201 libilbc_encoder_deps="libilbc"
3202 libkvazaar_encoder_deps="libkvazaar"
3203 libmodplug_demuxer_deps="libmodplug"
3204 libmp3lame_encoder_deps="libmp3lame"
3205 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3206 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3207 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3208 libopencore_amrnb_encoder_select="audio_frame_queue"
3209 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3210 libopenh264_decoder_deps="libopenh264"
3211 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3212 libopenh264_encoder_deps="libopenh264"
3213 libopenjpeg_decoder_deps="libopenjpeg"
3214 libopenjpeg_encoder_deps="libopenjpeg"
3215 libopenmpt_demuxer_deps="libopenmpt"
3216 libopus_decoder_deps="libopus"
3217 libopus_encoder_deps="libopus"
3218 libopus_encoder_select="audio_frame_queue"
3219 librav1e_encoder_deps="librav1e"
3220 librav1e_encoder_select="extract_extradata_bsf"
3221 librsvg_decoder_deps="librsvg"
3222 libshine_encoder_deps="libshine"
3223 libshine_encoder_select="audio_frame_queue"
3224 libspeex_decoder_deps="libspeex"
3225 libspeex_encoder_deps="libspeex"
3226 libspeex_encoder_select="audio_frame_queue"
3227 libtheora_encoder_deps="libtheora"
3228 libtwolame_encoder_deps="libtwolame"
3229 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3230 libvorbis_decoder_deps="libvorbis"
3231 libvorbis_encoder_deps="libvorbis libvorbisenc"
3232 libvorbis_encoder_select="audio_frame_queue"
3233 libvpx_vp8_decoder_deps="libvpx"
3234 libvpx_vp8_encoder_deps="libvpx"
3235 libvpx_vp9_decoder_deps="libvpx"
3236 libvpx_vp9_encoder_deps="libvpx"
3237 libwavpack_encoder_deps="libwavpack"
3238 libwavpack_encoder_select="audio_frame_queue"
3239 libwebp_encoder_deps="libwebp"
3240 libwebp_anim_encoder_deps="libwebp"
3241 libx262_encoder_deps="libx262"
3242 libx264_encoder_deps="libx264"
3243 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3244 libx264rgb_encoder_select="libx264_encoder"
3245 libx265_encoder_deps="libx265"
3246 libxavs_encoder_deps="libxavs"
3247 libxavs2_encoder_deps="libxavs2"
3248 libxvid_encoder_deps="libxvid"
3249 libzvbi_teletext_decoder_deps="libzvbi"
3250 vapoursynth_demuxer_deps="vapoursynth"
3251 videotoolbox_suggest="coreservices"
3252 videotoolbox_deps="corefoundation coremedia corevideo"
3253 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3254
3255 # demuxers / muxers
3256 ac3_demuxer_select="ac3_parser"
3257 act_demuxer_select="riffdec"
3258 aiff_muxer_select="iso_media"
3259 asf_demuxer_select="riffdec"
3260 asf_o_demuxer_select="riffdec"
3261 asf_muxer_select="riffenc"
3262 asf_stream_muxer_select="asf_muxer"
3263 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3264 avi_demuxer_select="iso_media riffdec exif"
3265 avi_muxer_select="riffenc"
3266 caf_demuxer_select="iso_media riffdec"
3267 caf_muxer_select="iso_media"
3268 dash_muxer_select="mp4_muxer"
3269 dash_demuxer_deps="libxml2"
3270 dirac_demuxer_select="dirac_parser"
3271 dts_demuxer_select="dca_parser"
3272 dtshd_demuxer_select="dca_parser"
3273 dv_demuxer_select="dvprofile"
3274 dv_muxer_select="dvprofile"
3275 dxa_demuxer_select="riffdec"
3276 eac3_demuxer_select="ac3_parser"
3277 f4v_muxer_select="mov_muxer"
3278 fifo_muxer_deps="threads"
3279 flac_demuxer_select="flac_parser"
3280 hds_muxer_select="flv_muxer"
3281 hls_muxer_select="mpegts_muxer"
3282 hls_muxer_suggest="gcrypt openssl"
3283 image2_alias_pix_demuxer_select="image2_demuxer"
3284 image2_brender_pix_demuxer_select="image2_demuxer"
3285 ipod_muxer_select="mov_muxer"
3286 ismv_muxer_select="mov_muxer"
3287 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3288 matroska_audio_muxer_select="matroska_muxer"
3289 matroska_demuxer_select="iso_media riffdec"
3290 matroska_demuxer_suggest="bzlib lzo zlib"
3291 matroska_muxer_select="iso_media riffenc"
3292 mmf_muxer_select="riffenc"
3293 mov_demuxer_select="iso_media riffdec"
3294 mov_demuxer_suggest="zlib"
3295 mov_muxer_select="iso_media riffenc rtpenc_chain"
3296 mp3_demuxer_select="mpegaudio_parser"
3297 mp3_muxer_select="mpegaudioheader"
3298 mp4_muxer_select="mov_muxer"
3299 mpegts_demuxer_select="iso_media"
3300 mpegts_muxer_select="adts_muxer latm_muxer"
3301 mpegtsraw_demuxer_select="mpegts_demuxer"
3302 mxf_muxer_select="golomb"
3303 mxf_d10_muxer_select="mxf_muxer"
3304 mxf_opatom_muxer_select="mxf_muxer"
3305 nut_muxer_select="riffenc"
3306 nuv_demuxer_select="riffdec"
3307 oga_muxer_select="ogg_muxer"
3308 ogg_demuxer_select="dirac_parse"
3309 ogv_muxer_select="ogg_muxer"
3310 opus_muxer_select="ogg_muxer"
3311 psp_muxer_select="mov_muxer"
3312 rtp_demuxer_select="sdp_demuxer"
3313 rtp_muxer_select="golomb jpegtables"
3314 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3315 rtsp_demuxer_select="http_protocol rtpdec"
3316 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3317 sap_demuxer_select="sdp_demuxer"
3318 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3319 sdp_demuxer_select="rtpdec"
3320 smoothstreaming_muxer_select="ismv_muxer"
3321 spdif_demuxer_select="adts_header"
3322 spdif_muxer_select="adts_header"
3323 spx_muxer_select="ogg_muxer"
3324 swf_demuxer_suggest="zlib"
3325 tak_demuxer_select="tak_parser"
3326 tg2_muxer_select="mov_muxer"
3327 tgp_muxer_select="mov_muxer"
3328 vobsub_demuxer_select="mpegps_demuxer"
3329 w64_demuxer_select="wav_demuxer"
3330 w64_muxer_select="wav_muxer"
3331 wav_demuxer_select="riffdec"
3332 wav_muxer_select="riffenc"
3333 webm_muxer_select="iso_media riffenc"
3334 webm_dash_manifest_demuxer_select="matroska_demuxer"
3335 wtv_demuxer_select="mpegts_demuxer riffdec"
3336 wtv_muxer_select="mpegts_muxer riffenc"
3337 xmv_demuxer_select="riffdec"
3338 xwma_demuxer_select="riffdec"
3339
3340 # indevs / outdevs
3341 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3342 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3343 alsa_indev_deps="alsa"
3344 alsa_outdev_deps="alsa"
3345 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3346 avfoundation_indev_suggest="coregraphics applicationservices"
3347 avfoundation_indev_extralibs="-framework Foundation"
3348 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3349 caca_outdev_deps="libcaca"
3350 decklink_deps_any="libdl LoadLibrary"
3351 decklink_indev_deps="decklink threads"
3352 decklink_indev_extralibs="-lstdc++"
3353 decklink_outdev_deps="decklink threads"
3354 decklink_outdev_suggest="libklvanc"
3355 decklink_outdev_extralibs="-lstdc++"
3356 dshow_indev_deps="IBaseFilter"
3357 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3358 fbdev_indev_deps="linux_fb_h"
3359 fbdev_outdev_deps="linux_fb_h"
3360 gdigrab_indev_deps="CreateDIBSection"
3361 gdigrab_indev_extralibs="-lgdi32"
3362 gdigrab_indev_select="bmp_decoder"
3363 iec61883_indev_deps="libiec61883"
3364 jack_indev_deps="libjack"
3365 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3366 kmsgrab_indev_deps="libdrm"
3367 lavfi_indev_deps="avfilter"
3368 libcdio_indev_deps="libcdio"
3369 libdc1394_indev_deps="libdc1394"
3370 openal_indev_deps="openal"
3371 opengl_outdev_deps="opengl"
3372 opengl_outdev_suggest="sdl2"
3373 oss_indev_deps_any="sys_soundcard_h"
3374 oss_outdev_deps_any="sys_soundcard_h"
3375 pulse_indev_deps="libpulse"
3376 pulse_outdev_deps="libpulse"
3377 sdl2_outdev_deps="sdl2"
3378 sndio_indev_deps="sndio"
3379 sndio_outdev_deps="sndio"
3380 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3381 v4l2_indev_suggest="libv4l2"
3382 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3383 v4l2_outdev_suggest="libv4l2"
3384 vfwcap_indev_deps="vfw32 vfwcap_defines"
3385 xcbgrab_indev_deps="libxcb"
3386 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3387 xv_outdev_deps="xlib"
3388
3389 # protocols
3390 async_protocol_deps="threads"
3391 bluray_protocol_deps="libbluray"
3392 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3393 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3394 ffrtmpcrypt_protocol_select="tcp_protocol"
3395 ffrtmphttp_protocol_conflict="librtmp_protocol"
3396 ffrtmphttp_protocol_select="http_protocol"
3397 ftp_protocol_select="tcp_protocol"
3398 gopher_protocol_select="network"
3399 http_protocol_select="tcp_protocol"
3400 http_protocol_suggest="zlib"
3401 httpproxy_protocol_select="tcp_protocol"
3402 httpproxy_protocol_suggest="zlib"
3403 https_protocol_select="tls_protocol"
3404 https_protocol_suggest="zlib"
3405 icecast_protocol_select="http_protocol"
3406 mmsh_protocol_select="http_protocol"
3407 mmst_protocol_select="network"
3408 rtmp_protocol_conflict="librtmp_protocol"
3409 rtmp_protocol_select="tcp_protocol"
3410 rtmp_protocol_suggest="zlib"
3411 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3412 rtmpe_protocol_suggest="zlib"
3413 rtmps_protocol_conflict="librtmp_protocol"
3414 rtmps_protocol_select="tls_protocol"
3415 rtmps_protocol_suggest="zlib"
3416 rtmpt_protocol_select="ffrtmphttp_protocol"
3417 rtmpt_protocol_suggest="zlib"
3418 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3419 rtmpte_protocol_suggest="zlib"
3420 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3421 rtmpts_protocol_suggest="zlib"
3422 rtp_protocol_select="udp_protocol"
3423 schannel_conflict="openssl gnutls libtls mbedtls"
3424 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3425 sctp_protocol_select="network"
3426 securetransport_conflict="openssl gnutls libtls mbedtls"
3427 srtp_protocol_select="rtp_protocol srtp"
3428 tcp_protocol_select="network"
3429 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3430 tls_protocol_select="tcp_protocol"
3431 udp_protocol_select="network"
3432 udplite_protocol_select="network"
3433 unix_protocol_deps="sys_un_h"
3434 unix_protocol_select="network"
3435
3436 # external library protocols
3437 librtmp_protocol_deps="librtmp"
3438 librtmpe_protocol_deps="librtmp"
3439 librtmps_protocol_deps="librtmp"
3440 librtmpt_protocol_deps="librtmp"
3441 librtmpte_protocol_deps="librtmp"
3442 libsmbclient_protocol_deps="libsmbclient gplv3"
3443 libsrt_protocol_deps="libsrt"
3444 libsrt_protocol_select="network"
3445 libssh_protocol_deps="libssh"
3446 libtls_conflict="openssl gnutls mbedtls"
3447 libzmq_protocol_deps="libzmq"
3448 libzmq_protocol_select="network"
3449
3450 # filters
3451 afftdn_filter_deps="avcodec"
3452 afftdn_filter_select="fft"
3453 afftfilt_filter_deps="avcodec"
3454 afftfilt_filter_select="fft"
3455 afir_filter_deps="avcodec"
3456 afir_filter_select="rdft"
3457 amovie_filter_deps="avcodec avformat"
3458 aresample_filter_deps="swresample"
3459 asr_filter_deps="pocketsphinx"
3460 ass_filter_deps="libass"
3461 atempo_filter_deps="avcodec"
3462 atempo_filter_select="rdft"
3463 avgblur_opencl_filter_deps="opencl"
3464 avgblur_vulkan_filter_deps="vulkan libglslang"
3465 azmq_filter_deps="libzmq"
3466 blackframe_filter_deps="gpl"
3467 bm3d_filter_deps="avcodec"
3468 bm3d_filter_select="dct"
3469 boxblur_filter_deps="gpl"
3470 boxblur_opencl_filter_deps="opencl gpl"
3471 bs2b_filter_deps="libbs2b"
3472 chromaber_vulkan_filter_deps="vulkan libglslang"
3473 colorkey_opencl_filter_deps="opencl"
3474 colormatrix_filter_deps="gpl"
3475 convolution_opencl_filter_deps="opencl"
3476 convolve_filter_deps="avcodec"
3477 convolve_filter_select="fft"
3478 coreimage_filter_deps="coreimage appkit"
3479 coreimage_filter_extralibs="-framework OpenGL"
3480 coreimagesrc_filter_deps="coreimage appkit"
3481 coreimagesrc_filter_extralibs="-framework OpenGL"
3482 cover_rect_filter_deps="avcodec avformat gpl"
3483 cropdetect_filter_deps="gpl"
3484 deconvolve_filter_deps="avcodec"
3485 deconvolve_filter_select="fft"
3486 deinterlace_qsv_filter_deps="libmfx"
3487 deinterlace_vaapi_filter_deps="vaapi"
3488 delogo_filter_deps="gpl"
3489 denoise_vaapi_filter_deps="vaapi"
3490 derain_filter_select="dnn"
3491 deshake_filter_select="pixelutils"
3492 deshake_opencl_filter_deps="opencl"
3493 dilation_opencl_filter_deps="opencl"
3494 dnn_processing_filter_select="dnn"
3495 drawtext_filter_deps="libfreetype"
3496 drawtext_filter_suggest="libfontconfig libfribidi"
3497 elbg_filter_deps="avcodec"
3498 eq_filter_deps="gpl"
3499 erosion_opencl_filter_deps="opencl"
3500 fftfilt_filter_deps="avcodec"
3501 fftfilt_filter_select="rdft"
3502 fftdnoiz_filter_deps="avcodec"
3503 fftdnoiz_filter_select="fft"
3504 find_rect_filter_deps="avcodec avformat gpl"
3505 firequalizer_filter_deps="avcodec"
3506 firequalizer_filter_select="rdft"
3507 flite_filter_deps="libflite"
3508 framerate_filter_select="scene_sad"
3509 freezedetect_filter_select="scene_sad"
3510 frei0r_filter_deps="frei0r libdl"
3511 frei0r_src_filter_deps="frei0r libdl"
3512 fspp_filter_deps="gpl"
3513 headphone_filter_select="fft"
3514 histeq_filter_deps="gpl"
3515 hqdn3d_filter_deps="gpl"
3516 interlace_filter_deps="gpl"
3517 kerndeint_filter_deps="gpl"
3518 ladspa_filter_deps="ladspa libdl"
3519 lensfun_filter_deps="liblensfun version3"
3520 lv2_filter_deps="lv2"
3521 mcdeint_filter_deps="avcodec gpl"
3522 movie_filter_deps="avcodec avformat"
3523 mpdecimate_filter_deps="gpl"
3524 mpdecimate_filter_select="pixelutils"
3525 minterpolate_filter_select="scene_sad"
3526 mptestsrc_filter_deps="gpl"
3527 negate_filter_deps="lut_filter"
3528 nlmeans_opencl_filter_deps="opencl"
3529 nnedi_filter_deps="gpl"
3530 ocr_filter_deps="libtesseract"
3531 ocv_filter_deps="libopencv"
3532 openclsrc_filter_deps="opencl"
3533 overlay_opencl_filter_deps="opencl"
3534 overlay_qsv_filter_deps="libmfx"
3535 overlay_qsv_filter_select="qsvvpp"
3536 overlay_vulkan_filter_deps="vulkan libglslang"
3537 owdenoise_filter_deps="gpl"
3538 pad_opencl_filter_deps="opencl"
3539 pan_filter_deps="swresample"
3540 perspective_filter_deps="gpl"
3541 phase_filter_deps="gpl"
3542 pp7_filter_deps="gpl"
3543 pp_filter_deps="gpl postproc"
3544 prewitt_opencl_filter_deps="opencl"
3545 procamp_vaapi_filter_deps="vaapi"
3546 program_opencl_filter_deps="opencl"
3547 pullup_filter_deps="gpl"
3548 removelogo_filter_deps="avcodec avformat swscale"
3549 repeatfields_filter_deps="gpl"
3550 resample_filter_deps="avresample"
3551 roberts_opencl_filter_deps="opencl"
3552 rubberband_filter_deps="librubberband"
3553 sab_filter_deps="gpl swscale"
3554 scale2ref_filter_deps="swscale"
3555 scale_filter_deps="swscale"
3556 scale_qsv_filter_deps="libmfx"
3557 select_filter_select="scene_sad"
3558 sharpness_vaapi_filter_deps="vaapi"
3559 showcqt_filter_deps="avcodec avformat swscale"
3560 showcqt_filter_suggest="libfontconfig libfreetype"
3561 showcqt_filter_select="fft"
3562 showfreqs_filter_deps="avcodec"
3563 showfreqs_filter_select="fft"
3564 showspatial_filter_select="fft"
3565 showspectrum_filter_deps="avcodec"
3566 showspectrum_filter_select="fft"
3567 showspectrumpic_filter_deps="avcodec"
3568 showspectrumpic_filter_select="fft"
3569 signature_filter_deps="gpl avcodec avformat"
3570 sinc_filter_select="rdft"
3571 smartblur_filter_deps="gpl swscale"
3572 sobel_opencl_filter_deps="opencl"
3573 sofalizer_filter_deps="libmysofa avcodec"
3574 sofalizer_filter_select="fft"
3575 spectrumsynth_filter_deps="avcodec"
3576 spectrumsynth_filter_select="fft"
3577 spp_filter_deps="gpl avcodec"
3578 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3579 sr_filter_deps="avformat swscale"
3580 sr_filter_select="dnn"
3581 stereo3d_filter_deps="gpl"
3582 subtitles_filter_deps="avformat avcodec libass"
3583 super2xsai_filter_deps="gpl"
3584 pixfmts_super2xsai_test_deps="super2xsai_filter"
3585 superequalizer_filter_select="rdft"
3586 surround_filter_select="rdft"
3587 tinterlace_filter_deps="gpl"
3588 tinterlace_merge_test_deps="tinterlace_filter"
3589 tinterlace_pad_test_deps="tinterlace_filter"
3590 tonemap_filter_deps="const_nan"
3591 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3592 tonemap_opencl_filter_deps="opencl const_nan"
3593 transpose_opencl_filter_deps="opencl"
3594 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3595 unsharp_opencl_filter_deps="opencl"
3596 uspp_filter_deps="gpl avcodec"
3597 vaguedenoiser_filter_deps="gpl"
3598 vidstabdetect_filter_deps="libvidstab"
3599 vidstabtransform_filter_deps="libvidstab"
3600 libvmaf_filter_deps="libvmaf pthreads"
3601 zmq_filter_deps="libzmq"
3602 zoompan_filter_deps="swscale"
3603 zscale_filter_deps="libzimg const_nan"
3604 scale_vaapi_filter_deps="vaapi"
3605 scale_vulkan_filter_deps="vulkan libglslang"
3606 vpp_qsv_filter_deps="libmfx"
3607 vpp_qsv_filter_select="qsvvpp"
3608 xfade_opencl_filter_deps="opencl"
3609 yadif_cuda_filter_deps="ffnvcodec"
3610 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3611
3612 # examples
3613 avio_dir_cmd_deps="avformat avutil"
3614 avio_reading_deps="avformat avcodec avutil"
3615 decode_audio_example_deps="avcodec avutil"
3616 decode_video_example_deps="avcodec avutil"
3617 demuxing_decoding_example_deps="avcodec avformat avutil"
3618 encode_audio_example_deps="avcodec avutil"
3619 encode_video_example_deps="avcodec avutil"
3620 extract_mvs_example_deps="avcodec avformat avutil"
3621 filter_audio_example_deps="avfilter avutil"
3622 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3623 filtering_video_example_deps="avfilter avcodec avformat avutil"
3624 http_multiclient_example_deps="avformat avutil fork"
3625 hw_decode_example_deps="avcodec avformat avutil"
3626 metadata_example_deps="avformat avutil"
3627 muxing_example_deps="avcodec avformat avutil swscale"
3628 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3629 remuxing_example_deps="avcodec avformat avutil"
3630 resampling_audio_example_deps="avutil swresample"
3631 scaling_video_example_deps="avutil swscale"
3632 transcode_aac_example_deps="avcodec avformat swresample"
3633 transcoding_example_deps="avfilter avcodec avformat avutil"
3634 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3635 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3636
3637 # EXTRALIBS_LIST
3638 cpu_init_extralibs="pthreads_extralibs"
3639 cws2fws_extralibs="zlib_extralibs"
3640
3641 # libraries, in any order
3642 avcodec_deps="avutil"
3643 avcodec_suggest="libm"
3644 avcodec_select="null_bsf"
3645 avdevice_deps="avformat avcodec avutil"
3646 avdevice_suggest="libm"
3647 avfilter_deps="avutil"
3648 avfilter_suggest="libm"
3649 avformat_deps="avcodec avutil"
3650 avformat_suggest="libm network zlib"
3651 avresample_deps="avutil"
3652 avresample_suggest="libm"
3653 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3654 postproc_deps="avutil gpl"
3655 postproc_suggest="libm"
3656 swresample_deps="avutil"
3657 swresample_suggest="libm libsoxr"
3658 swscale_deps="avutil"
3659 swscale_suggest="libm"
3660
3661 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3662 avfilter_extralibs="pthreads_extralibs"
3663 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3664
3665 # programs
3666 ffmpeg_deps="avcodec avfilter avformat"
3667 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3668                hflip_filter null_filter
3669                transpose_filter trim_filter vflip_filter"
3670 ffmpeg_suggest="ole32 psapi shell32"
3671 ffplay_deps="avcodec avformat swscale swresample sdl2"
3672 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3673 ffplay_suggest="shell32"
3674 ffprobe_deps="avcodec avformat"
3675 ffprobe_suggest="shell32"
3676
3677 # documentation
3678 podpages_deps="perl"
3679 manpages_deps="perl pod2man"
3680 htmlpages_deps="perl"
3681 htmlpages_deps_any="makeinfo_html texi2html"
3682 txtpages_deps="perl makeinfo"
3683 doc_deps_any="manpages htmlpages podpages txtpages"
3684
3685 # default parameters
3686
3687 logfile="ffbuild/config.log"
3688
3689 # installation paths
3690 prefix_default="/usr/local"
3691 bindir_default='${prefix}/bin'
3692 datadir_default='${prefix}/share/ffmpeg'
3693 docdir_default='${prefix}/share/doc/ffmpeg'
3694 incdir_default='${prefix}/include'
3695 libdir_default='${prefix}/lib'
3696 mandir_default='${prefix}/share/man'
3697
3698 # toolchain
3699 ar_default="ar"
3700 cc_default="gcc"
3701 cxx_default="g++"
3702 host_cc_default="gcc"
3703 doxygen_default="doxygen"
3704 install="install"
3705 ln_s_default="ln -s -f"
3706 nm_default="nm -g"
3707 pkg_config_default=pkg-config
3708 ranlib_default="ranlib"
3709 strip_default="strip"
3710 version_script='--version-script'
3711 objformat="elf32"
3712 x86asmexe_default="nasm"
3713 windres_default="windres"
3714 striptype="direct"
3715
3716 # OS
3717 target_os_default=$(tolower $(uname -s))
3718 host_os=$target_os_default
3719
3720 # machine
3721 if test "$target_os_default" = aix; then
3722     arch_default=$(uname -p)
3723     strip_default="strip -X32_64"
3724     nm_default="nm -g -X32_64"
3725 else
3726     arch_default=$(uname -m)
3727 fi
3728 cpu="generic"
3729 intrinsics="none"
3730
3731 # configurable options
3732 enable $PROGRAM_LIST
3733 enable $DOCUMENT_LIST
3734 enable $EXAMPLE_LIST
3735 enable $(filter_out avresample $LIBRARY_LIST)
3736 enable stripping
3737
3738 enable asm
3739 enable debug
3740 enable doc
3741 enable faan faandct faanidct
3742 enable large_tests
3743 enable optimizations
3744 enable runtime_cpudetect
3745 enable safe_bitstream_reader
3746 enable static
3747 enable swscale_alpha
3748 enable valgrind_backtrace
3749
3750 sws_max_filter_size_default=256
3751 set_default sws_max_filter_size
3752
3753 # internal components are enabled by default
3754 enable $EXTRALIBS_LIST
3755
3756 # Avoid external, non-system, libraries getting enabled by dependency resolution
3757 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3758
3759 # build settings
3760 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3761 LIBPREF="lib"
3762 LIBSUF=".a"
3763 FULLNAME='$(NAME)$(BUILDSUF)'
3764 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3765 SLIBPREF="lib"
3766 SLIBSUF=".so"
3767 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3768 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3769 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3770 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3771 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3772 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3773 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3774
3775 asflags_filter=echo
3776 cflags_filter=echo
3777 ldflags_filter=echo
3778
3779 AS_C='-c'
3780 AS_O='-o $@'
3781 CC_C='-c'
3782 CC_E='-E -o $@'
3783 CC_O='-o $@'
3784 CXX_C='-c'
3785 CXX_O='-o $@'
3786 OBJCC_C='-c'
3787 OBJCC_E='-E -o $@'
3788 OBJCC_O='-o $@'
3789 X86ASM_O='-o $@'
3790 LD_O='-o $@'
3791 LD_LIB='-l%'
3792 LD_PATH='-L'
3793 HOSTCC_C='-c'
3794 HOSTCC_E='-E -o $@'
3795 HOSTCC_O='-o $@'
3796 HOSTLD_O='-o $@'
3797 NVCC_C='-c'
3798 NVCC_O='-o $@'
3799
3800 host_extralibs='-lm'
3801 host_cflags_filter=echo
3802 host_ldflags_filter=echo
3803
3804 target_path='$(CURDIR)'
3805
3806 # since the object filename is not given with the -MM flag, the compiler
3807 # is only able to print the basename, and we must add the path ourselves
3808 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3809 DEPFLAGS='-MM'
3810
3811 mkdir -p ffbuild
3812
3813 # find source path
3814 if test -f configure; then
3815     source_path=.
3816 elif test -f src/configure; then
3817     source_path=src
3818 else
3819     source_path=$(cd $(dirname "$0"); pwd)
3820     case "$source_path" in
3821         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3822     esac
3823     test -e "$source_path/config.h" &&
3824         die "Out of tree builds are impossible with config.h in source dir."
3825 fi
3826
3827 for v in "$@"; do
3828     r=${v#*=}
3829     l=${v%"$r"}
3830     r=$(sh_quote "$r")
3831     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3832 done
3833
3834 find_things_extern(){
3835     thing=$1
3836     pattern=$2
3837     file=$source_path/$3
3838     out=${4:-$thing}
3839     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3840 }
3841
3842 find_filters_extern(){
3843     file=$source_path/$1
3844     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3845 }
3846
3847 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3848 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3849 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3850 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3851 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3852 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3853 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3854 CODEC_LIST="
3855     $ENCODER_LIST
3856     $DECODER_LIST
3857 "
3858 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3859 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3860 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3861 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3862
3863 AVCODEC_COMPONENTS_LIST="
3864     $BSF_LIST
3865     $DECODER_LIST
3866     $ENCODER_LIST
3867     $HWACCEL_LIST
3868     $PARSER_LIST
3869 "
3870
3871 AVDEVICE_COMPONENTS_LIST="
3872     $INDEV_LIST
3873     $OUTDEV_LIST
3874 "
3875
3876 AVFILTER_COMPONENTS_LIST="
3877     $FILTER_LIST
3878 "
3879
3880 AVFORMAT_COMPONENTS_LIST="
3881     $DEMUXER_LIST
3882     $MUXER_LIST
3883     $PROTOCOL_LIST
3884 "
3885
3886 ALL_COMPONENTS="
3887     $AVCODEC_COMPONENTS_LIST
3888     $AVDEVICE_COMPONENTS_LIST
3889     $AVFILTER_COMPONENTS_LIST
3890     $AVFORMAT_COMPONENTS_LIST
3891 "
3892
3893 for n in $COMPONENT_LIST; do
3894     v=$(toupper ${n%s})_LIST
3895     eval enable \$$v
3896     eval ${n}_if_any="\$$v"
3897 done
3898
3899 enable $ARCH_EXT_LIST
3900
3901 die_unknown(){
3902     echo "Unknown option \"$1\"."
3903     echo "See $0 --help for available options."
3904     exit 1
3905 }
3906
3907 print_in_columns() {
3908     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3909     {
3910         num_cols = width > col_width ? int(width / col_width) : 1;
3911         num_rows = int((NF + num_cols-1) / num_cols);
3912         y = x = 1;
3913         for (y = 1; y <= num_rows; y++) {
3914             i = y;
3915             for (x = 1; x <= num_cols; x++) {
3916                 if (i <= NF) {
3917                   line = sprintf("%s%-" col_width "s", line, $i);
3918                 }
3919                 i = i + num_rows;
3920             }
3921             print line; line = "";
3922         }
3923     }' | sed 's/ *$//'
3924 }
3925
3926 show_list() {
3927     suffix=_$1
3928     shift
3929     echo $* | sed s/$suffix//g | print_in_columns
3930     exit 0
3931 }
3932
3933 rand_list(){
3934     IFS=', '
3935     set -- $*
3936     unset IFS
3937     for thing; do
3938         comp=${thing%:*}
3939         prob=${thing#$comp}
3940         prob=${prob#:}
3941         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3942         echo "prob ${prob:-0.5}"
3943         printf '%s\n' $comp
3944     done
3945 }
3946
3947 do_random(){
3948     action=$1
3949     shift
3950     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3951     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3952 }
3953
3954 for opt do
3955     optval="${opt#*=}"
3956     case "$opt" in
3957         --extra-ldflags=*)
3958             add_ldflags $optval
3959         ;;
3960         --extra-ldexeflags=*)
3961             add_ldexeflags $optval
3962         ;;
3963         --extra-ldsoflags=*)
3964             add_ldsoflags $optval
3965         ;;
3966         --extra-ldlibflags=*)
3967             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3968                  "removed in the future. Use --extra-ldsoflags instead."
3969             add_ldsoflags $optval
3970         ;;
3971         --extra-libs=*)
3972             add_extralibs $optval
3973         ;;
3974         --disable-devices)
3975             disable $INDEV_LIST $OUTDEV_LIST
3976         ;;
3977         --enable-debug=*)
3978             debuglevel="$optval"
3979         ;;
3980         --disable-programs)
3981             disable $PROGRAM_LIST
3982         ;;
3983         --disable-everything)
3984             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3985         ;;
3986         --disable-all)
3987             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3988             disable $LIBRARY_LIST $PROGRAM_LIST doc
3989             enable avutil
3990         ;;
3991         --enable-random|--disable-random)
3992             action=${opt%%-random}
3993             do_random ${action#--} $COMPONENT_LIST
3994         ;;
3995         --enable-random=*|--disable-random=*)
3996             action=${opt%%-random=*}
3997             do_random ${action#--} $optval
3998         ;;
3999         --enable-sdl)
4000             enable sdl2
4001         ;;
4002         --enable-*=*|--disable-*=*)
4003             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4004             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4005             eval list=\$$(toupper $thing)_LIST
4006             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4007             list=$(filter "$name" $list)
4008             [ "$list" = "" ] && warn "Option $opt did not match anything"
4009             test $action = enable && warn_if_gets_disabled $list
4010             $action $list
4011         ;;
4012         --enable-yasm|--disable-yasm)
4013             warn "The ${opt} option is only provided for compatibility and will be\n"\
4014                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4015             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4016         ;;
4017         --yasmexe=*)
4018             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4019                  "removed in the future. Use --x86asmexe instead."
4020             x86asmexe="$optval"
4021         ;;
4022         --enable-?*|--disable-?*)
4023             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4024             if is_in $option $COMPONENT_LIST; then
4025                 test $action = disable && action=unset
4026                 eval $action \$$(toupper ${option%s})_LIST
4027             elif is_in $option $CMDLINE_SELECT; then
4028                 $action $option
4029             else
4030                 die_unknown $opt
4031             fi
4032         ;;
4033         --list-*)
4034             NAME="${opt#--list-}"
4035             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4036             NAME=${NAME%s}
4037             eval show_list $NAME \$$(toupper $NAME)_LIST
4038         ;;
4039         --help|-h) show_help
4040         ;;
4041         --quiet|-q) quiet=yes
4042         ;;
4043         --fatal-warnings) enable fatal_warnings
4044         ;;
4045         --libfuzzer=*)
4046             libfuzzer_path="$optval"
4047         ;;
4048         *)
4049             optname="${opt%%=*}"
4050             optname="${optname#--}"
4051             optname=$(echo "$optname" | sed 's/-/_/g')
4052             if is_in $optname $CMDLINE_SET; then
4053                 eval $optname='$optval'
4054             elif is_in $optname $CMDLINE_APPEND; then
4055                 append $optname "$optval"
4056             else
4057                 die_unknown $opt
4058             fi
4059         ;;
4060     esac
4061 done
4062
4063 for e in $env; do
4064     eval "export $e"
4065 done
4066
4067 if disabled autodetect; then
4068
4069     # Unless iconv is explicitely disabled by the user, we still want to probe
4070     # for the iconv from the libc.
4071     disabled iconv || enable libc_iconv
4072
4073     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4074     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4075 fi
4076 # Mark specifically enabled, but normally autodetected libraries as requested.
4077 for lib in $AUTODETECT_LIBS; do
4078     enabled $lib && request $lib
4079 done
4080 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4081 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4082 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4083
4084 disabled logging && logfile=/dev/null
4085
4086 # command line configuration sanity checks
4087
4088 # we need to build at least one lib type
4089 if ! enabled_any static shared; then
4090     cat <<EOF
4091 At least one library type must be built.
4092 Specify --enable-static to build the static libraries or --enable-shared to
4093 build the shared libraries as well. To only build the shared libraries specify
4094 --disable-static in addition to --enable-shared.
4095 EOF
4096     exit 1
4097 fi
4098
4099 die_license_disabled() {
4100     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4101 }
4102
4103 die_license_disabled_gpl() {
4104     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4105 }
4106
4107 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4108 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4109
4110 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4111 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4112
4113 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4114
4115 if enabled nonfree; then
4116     license="nonfree and unredistributable"
4117 elif enabled gplv3; then
4118     license="GPL version 3 or later"
4119 elif enabled lgplv3; then
4120     license="LGPL version 3 or later"
4121 elif enabled gpl; then
4122     license="GPL version 2 or later"
4123 else
4124     license="LGPL version 2.1 or later"
4125 fi
4126
4127 enabled_all gnutls openssl &&
4128     die "GnuTLS and OpenSSL must not be enabled at the same time."
4129
4130 enabled_all gnutls mbedtls &&
4131     die "GnuTLS and mbedTLS must not be enabled at the same time."
4132
4133 enabled_all openssl mbedtls &&
4134     die "OpenSSL and mbedTLS must not be enabled at the same time."
4135
4136 # Disable all the library-specific components if the library itself
4137 # is disabled, see AVCODEC_LIST and following _LIST variables.
4138
4139 disable_components(){
4140     disabled ${1} && disable $(
4141         eval components="\$$(toupper ${1})_COMPONENTS"
4142         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4143     )
4144 }
4145
4146 map 'disable_components $v' $LIBRARY_LIST
4147
4148 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4149 set >> $logfile
4150
4151 test -n "$valgrind" && toolchain="valgrind-memcheck"
4152
4153 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4154     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4155     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4156 }
4157
4158 case "$toolchain" in
4159     *-asan)
4160         cc_default="${toolchain%-asan}"
4161         add_cflags  -fsanitize=address
4162         add_ldflags -fsanitize=address
4163     ;;
4164     *-msan)
4165         cc_default="${toolchain%-msan}"
4166         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4167         add_ldflags -fsanitize=memory
4168     ;;
4169     *-tsan)
4170         cc_default="${toolchain%-tsan}"
4171         add_cflags  -fsanitize=thread
4172         add_ldflags -fsanitize=thread
4173         case "$toolchain" in
4174             gcc-tsan)
4175                 add_cflags  -fPIC
4176                 add_ldflags -fPIC
4177                 ;;
4178         esac
4179     ;;
4180     *-usan)
4181         cc_default="${toolchain%-usan}"
4182         add_cflags  -fsanitize=undefined
4183         add_ldflags -fsanitize=undefined
4184     ;;
4185     valgrind-*)
4186         target_exec_default="valgrind"
4187         case "$toolchain" in
4188             valgrind-massif)
4189                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
4190                 ;;
4191             valgrind-memcheck)
4192                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4193                 ;;
4194         esac
4195     ;;
4196     msvc)
4197         # Check whether the current MSVC version needs the C99 converter.
4198         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4199         # support enough of C99 to build ffmpeg. Default to the new
4200         # behaviour if the regexp was unable to match anything, since this
4201         # successfully parses the version number of existing supported
4202         # versions that require the converter (MSVC 2010 and 2012).
4203         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4204         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4205             cc_default="cl.exe"
4206             cxx_default="cl.exe"
4207         else
4208             die "Unsupported MSVC version (2013 or newer required)"
4209         fi
4210         ld_default="$source_path/compat/windows/mslink"
4211         nm_default="dumpbin.exe -symbols"
4212         ar_default="lib.exe"
4213         case "$arch" in
4214         aarch64|arm64)
4215             as_default="armasm64.exe"
4216             ;;
4217         arm*)
4218             as_default="armasm.exe"
4219             ;;
4220         esac
4221         target_os_default="win32"
4222         # Use a relative path for TMPDIR. This makes sure all the
4223         # ffconf temp files are written with a relative path, avoiding
4224         # issues with msys/win32 path conversion for MSVC parameters
4225         # such as -Fo<file> or -out:<file>.
4226         TMPDIR=.
4227     ;;
4228     icl)
4229         cc_default="icl"
4230         ld_default="xilink"
4231         nm_default="dumpbin -symbols"
4232         ar_default="xilib"
4233         target_os_default="win32"
4234         TMPDIR=.
4235     ;;
4236     gcov)
4237         add_cflags  -fprofile-arcs -ftest-coverage
4238         add_ldflags -fprofile-arcs -ftest-coverage
4239     ;;
4240     llvm-cov)
4241         add_cflags -fprofile-arcs -ftest-coverage
4242         add_ldflags --coverage
4243     ;;
4244     hardened)
4245         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4246         add_cflags   -fno-strict-overflow -fstack-protector-all
4247         add_ldflags  -Wl,-z,relro -Wl,-z,now
4248         add_cflags   -fPIE
4249         add_ldexeflags -fPIE -pie
4250     ;;
4251     ?*)
4252         die "Unknown toolchain $toolchain"
4253     ;;
4254 esac
4255
4256 if test -n "$cross_prefix"; then
4257     test -n "$arch" && test -n "$target_os" ||
4258         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4259     enable cross_compile
4260 fi
4261
4262 set_default target_os
4263 if test "$target_os" = android; then
4264     cc_default="clang"
4265 fi
4266
4267 ar_default="${cross_prefix}${ar_default}"
4268 cc_default="${cross_prefix}${cc_default}"
4269 cxx_default="${cross_prefix}${cxx_default}"
4270 nm_default="${cross_prefix}${nm_default}"
4271 pkg_config_default="${cross_prefix}${pkg_config_default}"
4272 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4273     ranlib_default="${cross_prefix}${ranlib_default} -D"
4274 else
4275     ranlib_default="${cross_prefix}${ranlib_default}"
4276 fi
4277 strip_default="${cross_prefix}${strip_default}"
4278 windres_default="${cross_prefix}${windres_default}"
4279
4280 sysinclude_default="${sysroot}/usr/include"
4281
4282 if enabled cuda_sdk; then
4283     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4284     enable cuda_nvcc
4285 fi
4286
4287 if enabled cuda_nvcc; then
4288     nvcc_default="nvcc"
4289     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4290 else
4291     nvcc_default="clang"
4292     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4293     NVCC_C=""
4294 fi
4295
4296 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4297     target_exec x86asmexe nvcc
4298 enabled cross_compile || host_cc_default=$cc
4299 set_default host_cc
4300
4301 pkg_config_fail_message=""
4302 if ! $pkg_config --version >/dev/null 2>&1; then
4303     warn "$pkg_config not found, library detection may fail."
4304     pkg_config=false
4305 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4306     pkg_config_fail_message="
4307 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4308 fi
4309
4310 if test $doxygen != $doxygen_default && \
4311   ! $doxygen --version >/dev/null 2>&1; then
4312     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4313 fi
4314
4315 exesuf() {
4316     case $1 in
4317         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4318     esac
4319 }
4320
4321 EXESUF=$(exesuf $target_os)
4322 HOSTEXESUF=$(exesuf $host_os)
4323
4324 # set temporary file name
4325 : ${TMPDIR:=$TEMPDIR}
4326 : ${TMPDIR:=$TMP}
4327 : ${TMPDIR:=/tmp}
4328
4329 if [ -n "$tempprefix" ] ; then
4330     mktemp(){
4331         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4332         echo "$tmpname"
4333         mkdir "$tmpname"
4334     }
4335 elif ! test_cmd mktemp -u XXXXXX; then
4336     # simple replacement for missing mktemp
4337     # NOT SAFE FOR GENERAL USE
4338     mktemp(){
4339         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4340         echo "$tmpname"
4341         mkdir "$tmpname"
4342     }
4343 fi
4344
4345 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4346     die "Unable to create temporary directory in $TMPDIR."
4347
4348 tmpfile(){
4349     tmp="${FFTMPDIR}/test"$2
4350     (set -C; exec > $tmp) 2> /dev/null ||
4351         die "Unable to create temporary file in $FFTMPDIR."
4352     eval $1=$tmp
4353 }
4354
4355 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4356 trap 'exit 2' INT
4357
4358 tmpfile TMPASM .asm
4359 tmpfile TMPC   .c
4360 tmpfile TMPCPP .cpp
4361 tmpfile TMPE   $EXESUF
4362 tmpfile TMPH   .h
4363 tmpfile TMPM   .m
4364 tmpfile TMPCU  .cu
4365 tmpfile TMPO   .o
4366 tmpfile TMPS   .S
4367 tmpfile TMPSH  .sh
4368 tmpfile TMPV   .ver
4369
4370 unset -f mktemp
4371
4372 chmod +x $TMPE
4373
4374 # make sure we can execute files in $TMPDIR
4375 cat > $TMPSH 2>> $logfile <<EOF
4376 #! /bin/sh
4377 EOF
4378 chmod +x $TMPSH >> $logfile 2>&1
4379 if ! $TMPSH >> $logfile 2>&1; then
4380     cat <<EOF
4381 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4382 variable to another directory and make sure that it is not mounted noexec.
4383 EOF
4384     die "Sanity test failed."
4385 fi
4386
4387 armasm_flags(){
4388     for flag; do
4389         case $flag in
4390             # Filter out MSVC cl.exe options from cflags that shouldn't
4391             # be passed to gas-preprocessor
4392             -M[TD]*)                                            ;;
4393             *)                  echo $flag                      ;;
4394         esac
4395    done
4396 }
4397
4398 cparser_flags(){
4399     for flag; do
4400         case $flag in
4401             -Wno-switch)             echo -Wno-switch-enum ;;
4402             -Wno-format-zero-length) ;;
4403             -Wdisabled-optimization) ;;
4404             -Wno-pointer-sign)       echo -Wno-other ;;
4405             *)                       echo $flag ;;
4406         esac
4407     done
4408 }
4409
4410 msvc_common_flags(){
4411     for flag; do
4412         case $flag in
4413             # In addition to specifying certain flags under the compiler
4414             # specific filters, they must be specified here as well or else the
4415             # generic catch all at the bottom will print the original flag.
4416             -Wall)                ;;
4417             -Wextra)              ;;
4418             -std=c99)             ;;
4419             # Common flags
4420             -fomit-frame-pointer) ;;
4421             -g)                   echo -Z7 ;;
4422             -fno-math-errno)      ;;
4423             -fno-common)          ;;
4424             -fno-signed-zeros)    ;;
4425             -fPIC)                ;;
4426             -mthumb)              ;;
4427             -march=*)             ;;
4428             -lz)                  echo zlib.lib ;;
4429             -lx264)               echo libx264.lib ;;
4430             -lstdc++)             ;;
4431             -l*)                  echo ${flag#-l}.lib ;;
4432             -LARGEADDRESSAWARE)   echo $flag ;;
4433             -L*)                  echo -libpath:${flag#-L} ;;
4434             *)                    echo $flag ;;
4435         esac
4436     done
4437 }
4438
4439 msvc_flags(){
4440     msvc_common_flags "$@"
4441     for flag; do
4442         case $flag in
4443             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4444                                        -wd4554 ;;
4445             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4446                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4447                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4448                                        -wd4307 \
4449                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4450         esac
4451     done
4452 }
4453
4454 icl_flags(){
4455     msvc_common_flags "$@"
4456     for flag; do
4457         case $flag in
4458             # Despite what Intel's documentation says -Wall, which is supported
4459             # on Windows, does enable remarks so disable them here.
4460             -Wall)                echo $flag -Qdiag-disable:remark ;;
4461             -std=c99)             echo -Qstd=c99 ;;
4462             -flto)                echo -ipo ;;
4463         esac
4464     done
4465 }
4466
4467 icc_flags(){
4468     for flag; do
4469         case $flag in
4470             -flto)                echo -ipo ;;
4471             *)                    echo $flag ;;
4472         esac
4473     done
4474 }
4475
4476 suncc_flags(){
4477     for flag; do
4478         case $flag in
4479             -march=*|-mcpu=*)
4480                 case "${flag#*=}" in
4481                     native)                   echo -xtarget=native       ;;
4482                     v9|niagara)               echo -xarch=sparc          ;;
4483                     ultrasparc)               echo -xarch=sparcvis       ;;
4484                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4485                     i586|pentium)             echo -xchip=pentium        ;;
4486                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4487                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4488                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4489                     pentium4*)          echo -xtarget=pentium4           ;;
4490                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4491                     *-sse3)             echo -xarch=sse3                 ;;
4492                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4493                     bonnell)                   echo -xarch=ssse3         ;;
4494                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4495                     westmere)                  echo -xtarget=westmere    ;;
4496                     silvermont)                echo -xarch=sse4_2        ;;
4497                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4498                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4499                                                echo -xarch=avx           ;;
4500                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4501                     btver1)                    echo -xarch=amdsse4a      ;;
4502                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4503                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4504                     k8|opteron|athlon64|athlon-fx)
4505                                                echo -xarch=sse2a         ;;
4506                     athlon*)                   echo -xarch=pentium_proa  ;;
4507                 esac
4508                 ;;
4509             -std=c99)             echo -xc99              ;;
4510             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4511             -fPIC)                echo -KPIC -xcode=pic32 ;;
4512             -W*,*)                echo $flag              ;;
4513             -f*-*|-W*|-mimpure-text)                      ;;
4514             -shared)              echo -G                 ;;
4515             *)                    echo $flag              ;;
4516         esac
4517     done
4518 }
4519
4520 probe_cc(){
4521     pfx=$1
4522     _cc=$2
4523     first=$3
4524
4525     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4526     unset _ld_o _ldflags _ld_lib _ld_path
4527     unset _depflags _DEPCMD _DEPFLAGS
4528     _flags_filter=echo
4529
4530     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4531         true # no-op to avoid reading stdin in following checks
4532     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4533         _type=llvm_gcc
4534         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4535         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4536         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4537         _cflags_speed='-O3'
4538         _cflags_size='-Os'
4539     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4540         _type=gcc
4541         gcc_version=$($_cc --version | head -n1)
4542         gcc_basever=$($_cc -dumpversion)
4543         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4544         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4545         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4546         case $gcc_basever in
4547             2) ;;
4548             2.*) ;;
4549             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4550         esac
4551         if [ "$first" = true ]; then
4552             case $gcc_basever in
4553                 4.2*)
4554                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4555             esac
4556         fi
4557         _cflags_speed='-O3'
4558         _cflags_size='-Os'
4559     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4560         _type=icc
4561         _ident=$($_cc --version | head -n1)
4562         _depflags='-MMD'
4563         _cflags_speed='-O3'
4564         _cflags_size='-Os'
4565         _cflags_noopt='-O1'
4566         _flags_filter=icc_flags
4567     elif $_cc -v 2>&1 | grep -q xlc; then
4568         _type=xlc
4569         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4570         _cflags_speed='-O5'
4571         _cflags_size='-O5 -qcompact'
4572     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4573         test -d "$sysroot" || die "No valid sysroot specified."
4574         _type=armcc
4575         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4576         armcc_conf="$PWD/armcc.conf"
4577         $_cc --arm_linux_configure                 \
4578              --arm_linux_config_file="$armcc_conf" \
4579              --configure_sysroot="$sysroot"        \
4580              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4581              die "Error creating armcc configuration file."
4582         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4583         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4584         as_default="${cross_prefix}gcc"
4585         _depflags='-MMD'
4586         _cflags_speed='-O3'
4587         _cflags_size='-Os'
4588     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4589         _type=clang
4590         _ident=$($_cc --version 2>/dev/null | head -n1)
4591         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4592         _cflags_speed='-O3'
4593         _cflags_size='-Oz'
4594     elif $_cc -V 2>&1 | grep -q Sun; then
4595         _type=suncc
4596         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4597         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4598         _DEPFLAGS='-xM1 -xc99'
4599         _ldflags='-std=c99'
4600         _cflags_speed='-O5'
4601         _cflags_size='-O5 -xspace'
4602         _flags_filter=suncc_flags
4603     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4604         _type=pathscale
4605         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4606         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4607         _cflags_speed='-O2'
4608         _cflags_size='-Os'
4609         _flags_filter='filter_out -Wdisabled-optimization'
4610     elif $_cc -v 2>&1 | grep -q Open64; then
4611         _type=open64
4612         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4613         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4614         _cflags_speed='-O2'
4615         _cflags_size='-Os'
4616         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4617     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4618         _type=armasm
4619         _ident=$($_cc | head -n1)
4620         # 4509: "This form of conditional instruction is deprecated"
4621         _flags="-nologo -ignore 4509"
4622         _flags_filter=armasm_flags
4623     elif $_cc 2>&1 | grep -q Intel; then
4624         _type=icl
4625         _ident=$($_cc 2>&1 | head -n1)
4626         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4627         # Not only is O3 broken on 13.x+ but it is slower on all previous
4628         # versions (tested) as well.
4629         _cflags_speed="-O2"
4630         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4631         if $_cc 2>&1 | grep -q Linker; then
4632             _ld_o='-out:$@'
4633         else
4634             _ld_o='-Fe$@'
4635         fi
4636         _cc_o='-Fo$@'
4637         _cc_e='-P'
4638         _flags_filter=icl_flags
4639         _ld_lib='lib%.a'
4640         _ld_path='-libpath:'
4641         # -Qdiag-error to make icl error when seeing certain unknown arguments
4642         _flags='-nologo -Qdiag-error:4044,10157'
4643         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4644         # with MSVC which enables it by default.
4645         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4646         disable stripping
4647     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4648         # lld can emulate multiple different linkers; in ms link.exe mode,
4649         # the -? parameter gives the help output which contains an identifyable
4650         # string, while it gives an error in other modes.
4651         _type=lld-link
4652         # The link.exe mode doesn't have a switch for getting the version,
4653         # but we can force it back to gnu mode and get the version from there.
4654         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4655         _ld_o='-out:$@'
4656         _flags_filter=msvc_flags
4657         _ld_lib='lib%.a'
4658         _ld_path='-libpath:'
4659     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4660         _type=msvc
4661         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4662         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4663         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4664         _cflags_speed="-O2"
4665         _cflags_size="-O1"
4666         _cflags_noopt="-O1"
4667         if $_cc -nologo- 2>&1 | grep -q Linker; then
4668             _ld_o='-out:$@'
4669         else
4670             _ld_o='-Fe$@'
4671         fi
4672         _cc_o='-Fo$@'
4673         _cc_e='-P -Fi$@'
4674         _flags_filter=msvc_flags
4675         _ld_lib='lib%.a'
4676         _ld_path='-libpath:'
4677         _flags='-nologo'
4678         disable stripping
4679     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4680         _type=cparser
4681         _ident=$($_cc --version | head -n1)
4682         _depflags='-MMD'
4683         _cflags_speed='-O4'
4684         _cflags_size='-O2'
4685         _flags_filter=cparser_flags
4686     fi
4687
4688     eval ${pfx}_type=\$_type
4689     eval ${pfx}_ident=\$_ident
4690 }
4691
4692 set_ccvars(){
4693     eval ${1}_C=\${_cc_c-\${${1}_C}}
4694     eval ${1}_E=\${_cc_e-\${${1}_E}}
4695     eval ${1}_O=\${_cc_o-\${${1}_O}}
4696
4697     if [ -n "$_depflags" ]; then
4698         eval ${1}_DEPFLAGS=\$_depflags
4699     else
4700         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4701         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4702         eval DEP${1}FLAGS=\$_flags
4703     fi
4704 }
4705
4706 probe_cc cc "$cc" "true"
4707 cflags_filter=$_flags_filter
4708 cflags_speed=$_cflags_speed
4709 cflags_size=$_cflags_size
4710 cflags_noopt=$_cflags_noopt
4711 add_cflags $_flags $_cflags
4712 cc_ldflags=$_ldflags
4713 set_ccvars CC
4714 set_ccvars CXX
4715
4716 probe_cc hostcc "$host_cc"
4717 host_cflags_filter=$_flags_filter
4718 host_cflags_speed=$_cflags_speed
4719 add_host_cflags  $_flags $_cflags
4720 set_ccvars HOSTCC
4721
4722 test -n "$cc_type" && enable $cc_type ||
4723     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4724
4725 : ${as_default:=$cc}
4726 : ${objcc_default:=$cc}
4727 : ${dep_cc_default:=$cc}
4728 : ${ld_default:=$cc}
4729 : ${host_ld_default:=$host_cc}
4730 set_default ar as objcc dep_cc ld ln_s host_ld windres
4731
4732 probe_cc as "$as"
4733 asflags_filter=$_flags_filter
4734 add_asflags $_flags $_cflags
4735 set_ccvars AS
4736
4737 probe_cc objcc "$objcc"
4738 objcflags_filter=$_flags_filter
4739 add_objcflags $_flags $_cflags
4740 set_ccvars OBJC
4741
4742 probe_cc ld "$ld"
4743 ldflags_filter=$_flags_filter
4744 add_ldflags $_flags $_ldflags
4745 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4746 LD_O=${_ld_o-$LD_O}
4747 LD_LIB=${_ld_lib-$LD_LIB}
4748 LD_PATH=${_ld_path-$LD_PATH}
4749
4750 probe_cc hostld "$host_ld"
4751 host_ldflags_filter=$_flags_filter
4752 add_host_ldflags $_flags $_ldflags
4753 HOSTLD_O=${_ld_o-$HOSTLD_O}
4754
4755 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4756     probe_cc depcc "$dep_cc"
4757     CCDEP=${_DEPCMD:-$DEPCMD}
4758     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4759     DEPCCFLAGS=$_flags
4760 fi
4761
4762 if $ar 2>&1 | grep -q Microsoft; then
4763     arflags="-nologo"
4764     ar_o='-out:$@'
4765 elif $ar 2>&1 | grep -q "\[D\] "; then
4766     arflags="rcD"
4767     ar_o='$@'
4768 else
4769     arflags="rc"
4770     ar_o='$@'
4771 fi
4772
4773 add_cflags $extra_cflags
4774 add_cxxflags $extra_cxxflags
4775 add_objcflags $extra_objcflags
4776 add_asflags $extra_cflags
4777
4778 if test -n "$sysroot"; then
4779     case "$cc_type" in
4780         gcc|llvm_gcc|clang)
4781             add_cppflags --sysroot="$sysroot"
4782             add_ldflags --sysroot="$sysroot"
4783         ;;
4784     esac
4785 fi
4786
4787 if test "$cpu" = host; then
4788     enabled cross_compile &&
4789         die "--cpu=host makes no sense when cross-compiling."
4790
4791     case "$cc_type" in
4792         gcc|llvm_gcc)
4793             check_native(){
4794                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4795                 sed -n "/cc1.*$1=/{
4796                             s/.*$1=\\([^ ]*\\).*/\\1/
4797                             p
4798                             q
4799                         }" $TMPE
4800             }
4801             cpu=$(check_native -march || check_native -mcpu)
4802         ;;
4803         clang)
4804             check_native(){
4805                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4806                 sed -n "/cc1.*-target-cpu /{
4807                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4808                             p
4809                             q
4810                         }" $TMPE
4811             }
4812             cpu=$(check_native -march)
4813         ;;
4814     esac
4815
4816     test "${cpu:-host}" = host &&
4817         die "--cpu=host not supported with compiler $cc"
4818 fi
4819
4820 # Deal with common $arch aliases
4821 case "$arch" in
4822     aarch64|arm64)
4823         arch="aarch64"
4824     ;;
4825     arm*|iPad*|iPhone*)
4826         arch="arm"
4827     ;;
4828     mips*|IP*)
4829         case "$arch" in
4830         *el)
4831             add_cppflags -EL
4832             add_ldflags -EL
4833         ;;
4834         *eb)
4835             add_cppflags -EB
4836             add_ldflags -EB
4837         ;;
4838         esac
4839         arch="mips"
4840     ;;
4841     parisc*|hppa*)
4842         arch="parisc"
4843     ;;
4844     "Power Macintosh"|ppc*|powerpc*)
4845         arch="ppc"
4846     ;;
4847     s390|s390x)
4848         arch="s390"
4849     ;;
4850     sh4|sh)
4851         arch="sh4"
4852     ;;
4853     sun4*|sparc*)
4854         arch="sparc"
4855     ;;
4856     tilegx|tile-gx)
4857         arch="tilegx"
4858     ;;
4859     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4860         arch="x86"
4861     ;;
4862 esac
4863
4864 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4865 enable $arch
4866
4867 # Add processor-specific flags
4868 if enabled aarch64; then
4869
4870     case $cpu in
4871         armv*)
4872             cpuflags="-march=$cpu"
4873         ;;
4874         *)
4875             cpuflags="-mcpu=$cpu"
4876         ;;
4877     esac
4878
4879 elif enabled alpha; then
4880
4881     cpuflags="-mcpu=$cpu"
4882
4883 elif enabled arm; then
4884
4885     check_arm_arch() {
4886         test_cpp_condition stddef.h \
4887             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4888             $cpuflags
4889     }
4890
4891     probe_arm_arch() {
4892         if   check_arm_arch 4;        then echo armv4
4893         elif check_arm_arch 4T;       then echo armv4t
4894         elif check_arm_arch 5;        then echo armv5
4895         elif check_arm_arch 5E;       then echo armv5e
4896         elif check_arm_arch 5T;       then echo armv5t
4897         elif check_arm_arch 5TE;      then echo armv5te
4898         elif check_arm_arch 5TEJ;     then echo armv5te
4899         elif check_arm_arch 6;        then echo armv6
4900         elif check_arm_arch 6J;       then echo armv6j
4901         elif check_arm_arch 6K;       then echo armv6k
4902         elif check_arm_arch 6Z;       then echo armv6z
4903         elif check_arm_arch 6KZ;      then echo armv6zk
4904         elif check_arm_arch 6ZK;      then echo armv6zk
4905         elif check_arm_arch 6T2;      then echo armv6t2
4906         elif check_arm_arch 7;        then echo armv7
4907         elif check_arm_arch 7A  7_A;  then echo armv7-a
4908         elif check_arm_arch 7S;       then echo armv7-a
4909         elif check_arm_arch 7R  7_R;  then echo armv7-r
4910         elif check_arm_arch 7M  7_M;  then echo armv7-m
4911         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4912         elif check_arm_arch 8A  8_A;  then echo armv8-a
4913         fi
4914     }
4915
4916     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4917
4918     case $cpu in
4919         armv*)
4920             cpuflags="-march=$cpu"
4921             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4922         ;;
4923         *)
4924             cpuflags="-mcpu=$cpu"
4925             case $cpu in
4926                 cortex-a*)                               subarch=armv7a  ;;
4927                 cortex-r*)                               subarch=armv7r  ;;
4928                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4929                 arm11*)                                  subarch=armv6   ;;
4930                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4931                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4932                 *)                             subarch=$(probe_arm_arch) ;;
4933             esac
4934         ;;
4935     esac
4936
4937     case "$subarch" in
4938         armv5t*)    enable fast_clz                ;;
4939         armv[6-8]*)
4940             enable fast_clz
4941             disabled fast_unaligned || enable fast_unaligned
4942             ;;
4943     esac
4944
4945 elif enabled avr32; then
4946
4947     case $cpu in
4948         ap7[02]0[0-2])
4949             subarch="avr32_ap"
4950             cpuflags="-mpart=$cpu"
4951         ;;
4952         ap)
4953             subarch="avr32_ap"
4954             cpuflags="-march=$cpu"
4955         ;;
4956         uc3[ab]*)
4957             subarch="avr32_uc"
4958             cpuflags="-mcpu=$cpu"
4959         ;;
4960         uc)
4961             subarch="avr32_uc"
4962             cpuflags="-march=$cpu"
4963         ;;
4964     esac
4965
4966 elif enabled bfin; then
4967
4968     cpuflags="-mcpu=$cpu"
4969
4970 elif enabled mips; then
4971
4972     cpuflags="-march=$cpu"
4973
4974     if [ "$cpu" != "generic" ]; then
4975         disable mips32r2
4976         disable mips32r5
4977         disable mips64r2
4978         disable mips32r6
4979         disable mips64r6
4980         disable loongson2
4981         disable loongson3
4982
4983         case $cpu in
4984             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4985                 enable mips32r2
4986                 disable msa
4987             ;;
4988             p5600|i6400|p6600)
4989                 disable mipsdsp
4990                 disable mipsdspr2
4991             ;;
4992             loongson*)
4993                 enable loongson2
4994                 enable loongson3
4995                 enable local_aligned
4996                 enable simd_align_16
4997                 enable fast_64bit
4998                 enable fast_clz
4999                 enable fast_cmov
5000                 enable fast_unaligned
5001                 disable aligned_stack
5002                 disable mipsdsp
5003                 disable mipsdspr2
5004                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5005                 if [ $cc == gcc ]; then
5006                     gcc_version=$(gcc -dumpversion)
5007                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5008                         expensive_optimization_flag=""
5009                     else
5010                         expensive_optimization_flag="-fno-expensive-optimizations"
5011                     fi
5012                 fi
5013                 case $cpu in
5014                     loongson3*)
5015                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5016                     ;;
5017                     loongson2e)
5018                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5019                     ;;
5020                     loongson2f)
5021                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5022                     ;;
5023                 esac
5024             ;;
5025             *)
5026                 # Unknown CPU. Disable everything.
5027                 warn "unknown CPU. Disabling all MIPS optimizations."
5028                 disable mipsfpu
5029                 disable mipsdsp
5030                 disable mipsdspr2
5031                 disable msa
5032                 disable mmi
5033             ;;
5034         esac
5035
5036         case $cpu in
5037             24kc)
5038                 disable mipsfpu
5039                 disable mipsdsp
5040                 disable mipsdspr2
5041             ;;
5042             24kf*)
5043                 disable mipsdsp
5044                 disable mipsdspr2
5045             ;;
5046             24kec|34kc|1004kc)
5047                 disable mipsfpu
5048                 disable mipsdspr2
5049             ;;
5050             24kef*|34kf*|1004kf*)
5051                 disable mipsdspr2
5052             ;;
5053             74kc)
5054                 disable mipsfpu
5055             ;;
5056             p5600)
5057                 enable mips32r5
5058                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5059             ;;
5060             i6400)
5061                 enable mips64r6
5062                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5063             ;;
5064             p6600)
5065                 enable mips64r6
5066                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5067             ;;
5068         esac
5069     else
5070         # We do not disable anything. Is up to the user to disable the unwanted features.
5071         warn 'generic cpu selected'
5072     fi
5073
5074 elif enabled ppc; then
5075
5076     disable ldbrx
5077
5078     case $(tolower $cpu) in
5079         601|ppc601|powerpc601)
5080             cpuflags="-mcpu=601"
5081             disable altivec
5082         ;;
5083         603*|ppc603*|powerpc603*)
5084             cpuflags="-mcpu=603"
5085             disable altivec
5086         ;;
5087         604*|ppc604*|powerpc604*)
5088             cpuflags="-mcpu=604"
5089             disable altivec
5090         ;;
5091         g3|75*|ppc75*|powerpc75*)
5092             cpuflags="-mcpu=750"
5093             disable altivec
5094         ;;
5095         g4|745*|ppc745*|powerpc745*)
5096             cpuflags="-mcpu=7450"
5097             disable vsx
5098         ;;
5099         74*|ppc74*|powerpc74*)
5100             cpuflags="-mcpu=7400"
5101             disable vsx
5102         ;;
5103         g5|970|ppc970|powerpc970)
5104             cpuflags="-mcpu=970"
5105             disable vsx
5106         ;;
5107         power[3-6]*)
5108             cpuflags="-mcpu=$cpu"
5109             disable vsx
5110         ;;
5111         power[7-8]*)
5112             cpuflags="-mcpu=$cpu"
5113         ;;
5114         cell)
5115             cpuflags="-mcpu=cell"
5116             enable ldbrx
5117             disable vsx
5118         ;;
5119         e500mc)
5120             cpuflags="-mcpu=e500mc"
5121             disable altivec
5122         ;;
5123         e500v2)
5124             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5125             disable altivec
5126             disable dcbzl
5127         ;;
5128         e500)
5129             cpuflags="-mcpu=8540 -mhard-float"
5130             disable altivec
5131             disable dcbzl
5132         ;;
5133     esac
5134
5135 elif enabled sparc; then
5136
5137     case $cpu in
5138         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5139             cpuflags="-mcpu=$cpu"
5140         ;;
5141         ultrasparc*|niagara[234])
5142             cpuflags="-mcpu=$cpu"
5143         ;;
5144     esac
5145
5146 elif enabled x86; then
5147
5148     case $cpu in
5149         i[345]86|pentium)
5150             cpuflags="-march=$cpu"
5151             disable i686
5152             disable mmx
5153         ;;
5154         # targets that do NOT support nopl and conditional mov (cmov)
5155         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5156             cpuflags="-march=$cpu"
5157             disable i686
5158         ;;
5159         # targets that do support nopl and conditional mov (cmov)
5160         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5161         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5162         |amdfam10|barcelona|b[dt]ver*|znver*)
5163             cpuflags="-march=$cpu"
5164             enable i686
5165             enable fast_cmov
5166         ;;
5167         # targets that do support conditional mov but on which it's slow
5168         pentium4|pentium4m|prescott|nocona)
5169             cpuflags="-march=$cpu"
5170             enable i686
5171             disable fast_cmov
5172         ;;
5173     esac
5174
5175 fi
5176
5177 if [ "$cpu" != generic ]; then
5178     add_cflags  $cpuflags
5179     add_asflags $cpuflags
5180     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5181 fi
5182
5183 # compiler sanity check
5184 test_exec <<EOF
5185 int main(void){ return 0; }
5186 EOF
5187 if test "$?" != 0; then
5188     echo "$cc is unable to create an executable file."
5189     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5190         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5191         echo "Only do this if you know what cross compiling means."
5192     fi
5193     die "C compiler test failed."
5194 fi
5195
5196 add_cppflags -D_ISOC99_SOURCE
5197 add_cxxflags -D__STDC_CONSTANT_MACROS
5198 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5199
5200 # some compilers silently accept -std=c11, so we also need to check that the
5201 # version macro is defined properly
5202 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5203     add_cflags -std=c11 ||
5204     check_cflags -std=c99
5205
5206 check_cppflags -D_FILE_OFFSET_BITS=64
5207 check_cppflags -D_LARGEFILE_SOURCE
5208
5209 add_host_cppflags -D_ISOC99_SOURCE
5210 check_host_cflags -std=c99
5211 check_host_cflags -Wall
5212 check_host_cflags $host_cflags_speed
5213
5214 check_64bit(){
5215     arch32=$1
5216     arch64=$2
5217     expr=${3:-'sizeof(void *) > 4'}
5218     test_code cc "" "int test[2*($expr) - 1]" &&
5219         subarch=$arch64 || subarch=$arch32
5220     enable $subarch
5221 }
5222
5223 case "$arch" in
5224     aarch64|alpha|ia64)
5225         enabled shared && enable_weak pic
5226     ;;
5227     mips)
5228         check_64bit mips mips64 '_MIPS_SIM > 1'
5229         enabled shared && enable_weak pic
5230     ;;
5231     parisc)
5232         check_64bit parisc parisc64
5233         enabled shared && enable_weak pic
5234     ;;
5235     ppc)
5236         check_64bit ppc ppc64
5237         enabled shared && enable_weak pic
5238     ;;
5239     s390)
5240         check_64bit s390 s390x
5241         enabled shared && enable_weak pic
5242     ;;
5243     sparc)
5244         check_64bit sparc sparc64
5245         enabled shared && enable_weak pic
5246     ;;
5247     x86)
5248         check_64bit x86_32 x86_64
5249         # Treat x32 as x64 for now. Note it also needs pic if shared
5250         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5251             subarch=x86_64 && enable x86_64 && disable x86_32
5252         if enabled x86_64; then
5253             enabled shared && enable_weak pic
5254             objformat=elf64
5255         fi
5256     ;;
5257 esac
5258
5259 # OS specific
5260 case $target_os in
5261     aix)
5262         SHFLAGS=-shared
5263         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5264         enabled shared && add_ldflags -Wl,-brtl
5265         arflags='-Xany -r -c'
5266         striptype=""
5267         ;;
5268     android)
5269         disable symver
5270         enable section_data_rel_ro
5271         add_cflags -fPIE
5272         add_ldexeflags -fPIE -pie
5273         SLIB_INSTALL_NAME='$(SLIBNAME)'
5274         SLIB_INSTALL_LINKS=
5275         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5276         ;;
5277     haiku)
5278         prefix_default="/boot/common"
5279         network_extralibs="-lnetwork"
5280         host_extralibs=
5281         ;;
5282     sunos)
5283         SHFLAGS='-shared -Wl,-h,$$(@F)'
5284         enabled x86 && append SHFLAGS -mimpure-text
5285         network_extralibs="-lsocket -lnsl"
5286         add_cppflags -D__EXTENSIONS__
5287         # When using suncc to build, the Solaris linker will mark
5288         # an executable with each instruction set encountered by
5289         # the Solaris assembler.  As our libraries contain their own
5290         # guards for processor-specific code, instead suppress
5291         # generation of the HWCAPS ELF section on Solaris x86 only.
5292         enabled_all suncc x86 &&
5293             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5294             add_ldflags -Wl,-M,mapfile
5295         nm_default='nm -P -g'
5296         striptype=""
5297         version_script='-M'
5298         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5299         ;;
5300     netbsd)
5301         disable symver
5302         oss_indev_extralibs="-lossaudio"
5303         oss_outdev_extralibs="-lossaudio"
5304         enabled gcc || check_ldflags -Wl,-zmuldefs
5305         ;;
5306     openbsd|bitrig)
5307         disable symver
5308         striptype=""
5309         SHFLAGS='-shared'
5310         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5311         SLIB_INSTALL_LINKS=
5312         oss_indev_extralibs="-lossaudio"
5313         oss_outdev_extralibs="-lossaudio"
5314         ;;
5315     dragonfly)
5316         disable symver
5317         ;;
5318     freebsd)
5319         ;;
5320     bsd/os)
5321         add_extralibs -lpoll -lgnugetopt
5322         strip="strip -d"
5323         ;;
5324     darwin)
5325         enabled ppc && add_asflags -force_cpusubtype_ALL
5326         install_name_dir_default='$(SHLIBDIR)'
5327         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5328         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5329         strip="${strip} -x"
5330         add_ldflags -Wl,-dynamic,-search_paths_first
5331         check_cflags -Werror=partial-availability
5332         SLIBSUF=".dylib"
5333         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5334         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5335         enabled x86_64 && objformat="macho64" || objformat="macho32"
5336         enabled_any pic shared x86_64 ||
5337             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5338         check_headers dispatch/dispatch.h &&
5339             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5340         if test -n "$sysroot"; then
5341             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5342             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5343         fi
5344         version_script='-exported_symbols_list'
5345         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5346         ;;
5347     msys*)
5348         die "Native MSYS builds are discouraged, please use the MINGW environment."
5349         ;;
5350     mingw32*|mingw64*)
5351         target_os=mingw32
5352         LIBTARGET=i386
5353         if enabled x86_64; then
5354             LIBTARGET="i386:x86-64"
5355         elif enabled arm; then
5356             LIBTARGET="arm"
5357         elif enabled aarch64; then
5358             LIBTARGET="arm64"
5359         fi
5360         if enabled shared; then
5361             # Cannot build both shared and static libs when using dllimport.
5362             disable static
5363         fi
5364         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5365         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5366         shlibdir_default="$bindir_default"
5367         SLIBPREF=""
5368         SLIBSUF=".dll"
5369         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5370         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5371         if test_cmd lib.exe -list; then
5372             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5373             if enabled x86_64; then
5374                 LIBTARGET=x64
5375             fi
5376         else
5377             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5378         fi
5379         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5380         SLIB_INSTALL_LINKS=
5381         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5382         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5383         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5384         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5385         enabled x86_64 && objformat="win64" || objformat="win32"
5386         dlltool="${cross_prefix}dlltool"
5387         ranlib=:
5388         enable dos_paths
5389         check_ldflags -Wl,--nxcompat,--dynamicbase
5390         # Lets work around some stupidity in binutils.
5391         # ld will strip relocations from executables even though we need them
5392         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5393         # however ld then forgets what the entry point should be (oops) so we
5394         # have to manually (re)set it.
5395         if enabled x86_32; then
5396             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5397         elif enabled x86_64; then
5398             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5399             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5400             # Set image base >4GB for extra entropy with HEASLR
5401             add_ldexeflags -Wl,--image-base,0x140000000
5402             append SHFLAGS -Wl,--image-base,0x180000000
5403         fi
5404         ;;
5405     win32|win64)
5406         disable symver
5407         if enabled shared; then
5408             # Link to the import library instead of the normal static library
5409             # for shared libs.
5410             LD_LIB='%.lib'
5411             # Cannot build both shared and static libs with MSVC or icl.
5412             disable static
5413         fi
5414         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5415         shlibdir_default="$bindir_default"
5416         SLIBPREF=""
5417         SLIBSUF=".dll"
5418         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5419         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5420         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5421         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5422         SLIB_INSTALL_LINKS=
5423         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5424         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5425         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5426         enabled x86_64 && objformat="win64" || objformat="win32"
5427         ranlib=:
5428         enable dos_paths
5429         ;;
5430     cygwin*)
5431         target_os=cygwin
5432         shlibdir_default="$bindir_default"
5433         SLIBPREF="cyg"
5434         SLIBSUF=".dll"
5435         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5436         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5437         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5438         SLIB_INSTALL_LINKS=
5439         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5440         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5441         enabled x86_64 && objformat="win64" || objformat="win32"
5442         enable dos_paths
5443         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5444         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5445         ;;
5446     *-dos|freedos|opendos)
5447         network_extralibs="-lsocket"
5448         objformat="coff"
5449         enable dos_paths
5450         ;;
5451     linux)
5452         enable section_data_rel_ro
5453         enabled_any arm aarch64 && enable_weak linux_perf
5454         ;;
5455     irix*)
5456         target_os=irix
5457         ranlib="echo ignoring ranlib"
5458         ;;
5459     os/2*)
5460         strip="lxlite -CS"
5461         striptype=""
5462         objformat="aout"
5463         add_cppflags -D_GNU_SOURCE
5464         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5465         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5466         LIBSUF="_s.a"
5467         SLIBPREF=""
5468         SLIBSUF=".dll"
5469         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5470         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5471         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5472             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5473             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5474             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5475             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5476         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5477             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5478         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5479         SLIB_INSTALL_LINKS=
5480         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5481         enable dos_paths
5482         enable_weak os2threads
5483         ;;
5484     gnu/kfreebsd)
5485         add_cppflags -D_BSD_SOURCE
5486         ;;
5487     gnu)
5488         ;;
5489     qnx)
5490         add_cppflags -D_QNX_SOURCE
5491         network_extralibs="-lsocket"
5492         ;;
5493     symbian)
5494         SLIBSUF=".dll"
5495         enable dos_paths
5496         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5497         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5498         add_ldflags -Wl,--target1-abs,--no-undefined \
5499                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5500                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5501         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5502                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5503                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5504         ;;
5505     minix)
5506         ;;
5507     none)
5508         ;;
5509     *)
5510         die "Unknown OS '$target_os'."
5511         ;;
5512 esac
5513
5514 # test if creating links works
5515 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5516 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5517 mkdir "$link_dest"
5518 $ln_s "$link_dest" "$link_name"
5519 touch "$link_dest/test_file"
5520 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5521     # create link to source path
5522     [ -e src ] && rm src
5523     $ln_s "$source_path" src
5524     source_link=src
5525 else
5526     # creating directory links doesn't work
5527     # fall back to using the full source path
5528     source_link="$source_path"
5529 fi
5530 # cleanup
5531 rm -r "$link_dest"
5532 rm -r "$link_name"
5533
5534 # determine libc flavour
5535
5536 probe_libc(){
5537     pfx=$1
5538     pfx_no_=${pfx%_}
5539     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5540     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5541         eval ${pfx}libc_type=uclibc
5542         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5543     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5544         eval ${pfx}libc_type=glibc
5545         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5546     # MinGW headers can be installed on Cygwin, so check for newlib first.
5547     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5548         eval ${pfx}libc_type=newlib
5549         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5550     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5551     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5552         eval ${pfx}libc_type=mingw64
5553         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5554             add_compat msvcrt/snprintf.o
5555             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5556         fi
5557         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5558         eval test \$${pfx_no_}cc_type = "gcc" &&
5559             add_${pfx}cppflags -D__printf__=__gnu_printf__
5560         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5561             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5562         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5563     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5564          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5565         eval ${pfx}libc_type=mingw32
5566         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5567             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5568             die "ERROR: MinGW32 runtime version must be >= 3.15."
5569         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5570         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5571             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5572         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5573             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5574         eval test \$${pfx_no_}cc_type = "gcc" &&
5575             add_${pfx}cppflags -D__printf__=__gnu_printf__
5576         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5577     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5578         eval ${pfx}libc_type=msvcrt
5579         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5580             if [ "$pfx" = host_ ]; then
5581                 add_host_cppflags -Dsnprintf=_snprintf
5582             else
5583                 add_compat strtod.o strtod=avpriv_strtod
5584                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5585                                              _snprintf=avpriv_snprintf  \
5586                                              vsnprintf=avpriv_vsnprintf
5587             fi
5588         fi
5589         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5590         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5591         # 0x601 by default unless something else is set by the user.
5592         # This can easily lead to us detecting functions only present
5593         # in such new versions and producing binaries requiring windows 7.0.
5594         # Therefore explicitly set the default to Vista unless the user has
5595         # set something else on the command line.
5596         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5597         # family. For these cases, configure is free to use any functions
5598         # found in the SDK headers by default. (Alternatively, we could force
5599         # _WIN32_WINNT to 0x0602 in that case.)
5600         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5601             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5602 #ifdef WINAPI_FAMILY
5603 #include <winapifamily.h>
5604 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5605 #error not desktop
5606 #endif
5607 #endif
5608 EOF
5609         if [ "$pfx" = "" ]; then
5610             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5611             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5612         fi
5613     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5614         eval ${pfx}libc_type=klibc
5615     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5616         eval ${pfx}libc_type=bionic
5617     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5618         eval ${pfx}libc_type=solaris
5619         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5620     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5621         eval ${pfx}libc_type=djgpp
5622         add_cppflags -U__STRICT_ANSI__
5623         add_cflags "-include $source_path/compat/djgpp/math.h"
5624         add_compat djgpp/math.o
5625     fi
5626     test_${pfx}cc <<EOF
5627 #include <time.h>
5628 void *v = localtime_r;
5629 EOF
5630 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5631 #include <time.h>
5632 void *v = localtime_r;
5633 EOF
5634
5635     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5636 }
5637
5638 probe_libc
5639 probe_libc host_
5640
5641 # hacks for compiler/libc/os combinations
5642
5643 case $libc_type in
5644     bionic)
5645         add_compat strtod.o strtod=avpriv_strtod
5646         ;;
5647 esac
5648
5649 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5650     add_cppflags '-I\$(SRC_PATH)/compat/float'
5651
5652 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5653
5654 set_default libdir
5655 : ${shlibdir_default:="$libdir"}
5656 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5657
5658 set_default $PATHS_LIST
5659 set_default nm
5660
5661 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5662
5663 enable_weak_pic() {
5664     disabled pic && return
5665     enable pic
5666     add_cppflags -DPIC
5667     case "$target_os" in
5668     mingw*|cygwin*|win*)
5669         ;;
5670     *)
5671         add_cflags -fPIC
5672         add_asflags -fPIC
5673         ;;
5674     esac
5675 }
5676
5677 enabled pic && enable_weak_pic
5678
5679 test_cc <<EOF || die "Symbol mangling check failed."
5680 int ff_extern;
5681 EOF
5682 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5683 extern_prefix=${sym%%ff_extern*}
5684
5685 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5686
5687 for restrict_keyword in restrict __restrict__ __restrict ""; do
5688     test_code cc "" "char * $restrict_keyword p" && break
5689 done
5690
5691 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5692
5693 # The global variable ensures the bits appear unchanged in the object file.
5694 test_cc <<EOF || die "endian test failed"
5695 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5696 EOF
5697 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5698
5699 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5700
5701 if ! enabled ppc64 || enabled bigendian; then
5702     disable vsx
5703 fi
5704
5705 check_gas() {
5706     log "check_gas using '$as' as AS"
5707     # :vararg is used on aarch64, arm and ppc altivec
5708     check_as vararg "
5709 .macro m n, y:vararg=0
5710 \n: .int \y
5711 .endm
5712 m x" || return 1
5713     # .altmacro is only used in arm asm
5714     ! enabled arm || check_as gnu_as ".altmacro"
5715 }
5716
5717 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5718     nogas=:
5719     enabled_any arm aarch64 && nogas=die
5720     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5721     as_noop=-v
5722
5723     case $as_type in
5724         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5725         gcc)  gaspp_as_type=gas ;;
5726         *)    gaspp_as_type=$as_type ;;
5727     esac
5728
5729     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5730
5731     test "${as#*gas-preprocessor.pl}" != "$as" ||
5732     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5733         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5734
5735     if ! check_gas ; then
5736         as=${gas:=$as}
5737         check_gas || \
5738             $nogas "GNU assembler not found, install/update gas-preprocessor"
5739     fi
5740
5741     check_as as_func ".func test
5742                       .endfunc"
5743 fi
5744
5745 check_inline_asm inline_asm_labels '"1:\n"'
5746
5747 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5748
5749 if enabled aarch64; then
5750     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5751     # internal assembler in clang 3.3 does not support this instruction
5752     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5753     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5754
5755     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5756
5757 elif enabled alpha; then
5758
5759     check_cflags -mieee
5760
5761 elif enabled arm; then
5762
5763     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5764     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5765 float func(float a, float b){ return a+b; }
5766 EOF
5767     enabled thumb && check_cflags -mthumb || check_cflags -marm
5768
5769     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5770         :
5771     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5772         :
5773     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5774         case "${cross_prefix:-$cc}" in
5775             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5776             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5777 __asm__ (".eabi_attribute 28, 1");
5778 int main(void) { return 0; }
5779 EOF
5780         esac
5781         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5782     fi
5783
5784     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5785     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5786     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5787     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5788     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5789     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5790     enabled setend  && check_insn setend  'setend be'
5791
5792     [ $target_os = linux ] || [ $target_os = android ] ||
5793         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5794             $ARCH_EXT_LIST_ARM
5795
5796     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5797
5798     check_as as_arch_directive ".arch armv7-a"
5799     check_as as_dn_directive   "ra .dn d0.i16"
5800     check_as as_fpu_directive  ".fpu neon"
5801
5802     # llvm's integrated assembler supports .object_arch from llvm 3.5
5803     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5804         check_as as_object_arch ".object_arch armv4"
5805
5806     # MS armasm fails to assemble our PIC constructs
5807     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5808
5809 elif enabled mips; then
5810
5811     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5812     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5813     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'