configure: rename cuda to ffnvcodec
[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 or libtls 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-libass          enable libass subtitles rendering,
221                            needed for subtitles and ass filter [no]
222   --enable-libbluray       enable BluRay reading using libbluray [no]
223   --enable-libbs2b         enable bs2b DSP library [no]
224   --enable-libcaca         enable textual display using libcaca [no]
225   --enable-libcelt         enable CELT decoding via libcelt [no]
226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
227   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
229                            and libraw1394 [no]
230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
235   --enable-libgme          enable Game Music Emu via libgme [no]
236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
239   --enable-libjack         enable JACK audio sound server [no]
240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
241   --enable-libmodplug      enable ModPlug via libmodplug [no]
242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
245   --enable-libopencv       enable video filtering via libopencv [no]
246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
249   --enable-libopus         enable Opus de/encoding via libopus [no]
250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
251   --enable-librsvg         enable SVG rasterization via librsvg [no]
252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
257   --enable-libsoxr         enable Include libsoxr resampling [no]
258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
259   --enable-libssh          enable SFTP protocol via libssh [no]
260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
261   --enable-libtheora       enable Theora encoding via libtheora [no]
262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
263                            if openssl or gnutls is not used [no]
264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
266   --enable-libvidstab      enable video stabilization using vid.stab [no]
267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
270                            native implementation exists [no]
271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
273   --enable-libwebp         enable WebP encoding via libwebp [no]
274   --enable-libx264         enable H.264 encoding via x264 [no]
275   --enable-libx265         enable HEVC encoding via x265 [no]
276   --enable-libxavs         enable AVS encoding via xavs [no]
277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
281   --enable-libxvid         enable Xvid encoding via xvidcore,
282                            native MPEG-4/Xvid encoder exists [no]
283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
285   --enable-libzmq          enable message passing via libzmq [no]
286   --enable-libzvbi         enable teletext support via libzvbi [no]
287   --enable-lv2             enable LV2 audio filtering [no]
288   --disable-lzma           disable lzma [autodetect]
289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
291   --enable-mediacodec      enable Android MediaCodec support [no]
292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
293   --enable-openal          enable OpenAL 1.1 capture support [no]
294   --enable-opencl          enable OpenCL processing [no]
295   --enable-opengl          enable OpenGL rendering [no]
296   --enable-openssl         enable openssl, needed for https support
297                            if gnutls or libtls is not used [no]
298   --disable-sndio          disable sndio support [autodetect]
299   --disable-schannel       disable SChannel SSP, needed for TLS support on
300                            Windows if openssl and gnutls are not used [autodetect]
301   --disable-sdl2           disable sdl2 [autodetect]
302   --disable-securetransport disable Secure Transport, needed for TLS support
303                            on OSX if openssl and gnutls are not used [autodetect]
304   --disable-xlib           disable xlib [autodetect]
305   --disable-zlib           disable zlib [autodetect]
306
307   The following libraries provide various hardware acceleration features:
308   --disable-amf            disable AMF video encoding code [autodetect]
309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
314   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
315   --enable-libdrm          enable DRM code (Linux) [no]
316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
321   --enable-omx             enable OpenMAX IL code [no]
322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
328
329 Toolchain options:
330   --arch=ARCH              select architecture [$arch]
331   --cpu=CPU                select the minimum required CPU (affects
332                            instruction selection, may crash on older CPUs)
333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
334   --progs-suffix=SUFFIX    program name suffix []
335   --enable-cross-compile   assume a cross-compiler is used
336   --sysroot=PATH           root of cross-build tree
337   --sysinclude=PATH        location of cross-build system headers
338   --target-os=OS           compiler targets OS [$target_os]
339   --target-exec=CMD        command to run executables on target
340   --target-path=DIR        path to view of build directory on target
341   --target-samples=DIR     path to samples directory on target
342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
343   --toolchain=NAME         set tool defaults according to NAME
344   --nm=NM                  use nm tool NM [$nm_default]
345   --ar=AR                  use archive tool AR [$ar_default]
346   --as=AS                  use assembler AS [$as_default]
347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
348   --strip=STRIP            use strip tool STRIP [$strip_default]
349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
351   --cc=CC                  use C compiler CC [$cc_default]
352   --cxx=CXX                use C compiler CXX [$cxx_default]
353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
356   --ld=LD                  use linker LD [$ld_default]
357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
361   --host-cc=HOSTCC         use host C compiler HOSTCC
362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
364   --host-ld=HOSTLD         use host linker HOSTLD
365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
366   --host-libs=HLIBS        use libs HLIBS when linking for host
367   --host-os=OS             compiler host OS [$target_os]
368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
375   --extra-version=STRING   version string suffix []
376   --optflags=OPTFLAGS      override optimization-related compiler flags
377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
378   --build-suffix=SUFFIX    library name suffix []
379   --enable-pic             build position-independent code
380   --enable-thumb           compile for Thumb instruction set
381   --enable-lto             use link-time optimization
382   --env="ENV=override"     override the environment variables
383
384 Advanced options (experts only):
385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
386   --custom-allocator=NAME  use a supported custom allocator
387   --disable-symver         disable symbol versioning
388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
389   --disable-safe-bitstream-reader
390                            disable buffer boundary checking in bitreaders
391                            (faster, but may crash)
392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
393
394 Optimization options (experts only):
395   --disable-asm            disable all assembly optimizations
396   --disable-altivec        disable AltiVec optimizations
397   --disable-vsx            disable VSX optimizations
398   --disable-power8         disable POWER8 optimizations
399   --disable-amd3dnow       disable 3DNow! optimizations
400   --disable-amd3dnowext    disable 3DNow! extended optimizations
401   --disable-mmx            disable MMX optimizations
402   --disable-mmxext         disable MMXEXT optimizations
403   --disable-sse            disable SSE optimizations
404   --disable-sse2           disable SSE2 optimizations
405   --disable-sse3           disable SSE3 optimizations
406   --disable-ssse3          disable SSSE3 optimizations
407   --disable-sse4           disable SSE4 optimizations
408   --disable-sse42          disable SSE4.2 optimizations
409   --disable-avx            disable AVX optimizations
410   --disable-xop            disable XOP optimizations
411   --disable-fma3           disable FMA3 optimizations
412   --disable-fma4           disable FMA4 optimizations
413   --disable-avx2           disable AVX2 optimizations
414   --disable-avx512         disable AVX-512 optimizations
415   --disable-aesni          disable AESNI optimizations
416   --disable-armv5te        disable armv5te optimizations
417   --disable-armv6          disable armv6 optimizations
418   --disable-armv6t2        disable armv6t2 optimizations
419   --disable-vfp            disable VFP optimizations
420   --disable-neon           disable NEON optimizations
421   --disable-inline-asm     disable use of inline assembly
422   --disable-x86asm         disable use of standalone x86 assembly
423   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
424   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
425   --disable-msa            disable MSA optimizations
426   --disable-mipsfpu        disable floating point MIPS optimizations
427   --disable-mmi            disable Loongson SIMD optimizations
428   --disable-fast-unaligned consider unaligned accesses slow
429
430 Developer options (useful when working on FFmpeg itself):
431   --disable-debug          disable debugging symbols
432   --enable-debug=LEVEL     set the debug level [$debuglevel]
433   --disable-optimizations  disable compiler optimizations
434   --enable-extra-warnings  enable more compiler warnings
435   --disable-stripping      disable stripping of executables and shared libraries
436   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
437                            2 causes a slowdown at runtime.
438   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
439   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
440                            leaks and errors, using the specified valgrind binary.
441                            Cannot be combined with --target-exec
442   --enable-ftrapv          Trap arithmetic overflows
443   --samples=PATH           location of test samples for FATE, if not set use
444                            \$FATE_SAMPLES at make invocation time.
445   --enable-neon-clobber-test check NEON registers for clobbering (should be
446                            used only for debugging purposes)
447   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
448                            should be used only for debugging purposes)
449   --enable-random          randomly enable/disable components
450   --disable-random
451   --enable-random=LIST     randomly enable/disable specific components or
452   --disable-random=LIST    component groups. LIST is a comma-separated list
453                            of NAME[:PROB] entries where NAME is a component
454                            (group) and PROB the probability associated with
455                            NAME (default 0.5).
456   --random-seed=VALUE      seed value for --enable/disable-random
457   --disable-valgrind-backtrace do not print a backtrace under Valgrind
458                            (only applies to --disable-optimizations builds)
459   --enable-osfuzz          Enable building fuzzer tool
460   --libfuzzer=PATH         path to libfuzzer
461   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
462                            in the name) of tests whose result is ignored
463   --enable-linux-perf      enable Linux Performance Monitor API
464
465 NOTE: Object files are built at the place where configure is launched.
466 EOF
467   exit 0
468 }
469
470 if test -t 1 && which tput >/dev/null 2>&1; then
471     ncolors=$(tput colors)
472     if test -n "$ncolors" && test $ncolors -ge 8; then
473         bold_color=$(tput bold)
474         warn_color=$(tput setaf 3)
475         error_color=$(tput setaf 1)
476         reset_color=$(tput sgr0)
477     fi
478     # 72 used instead of 80 since that's the default of pr
479     ncols=$(tput cols)
480 fi
481 : ${ncols:=72}
482
483 log(){
484     echo "$@" >> $logfile
485 }
486
487 log_file(){
488     log BEGIN $1
489     pr -n -t $1 >> $logfile
490     log END $1
491 }
492
493 warn(){
494     log "WARNING: $*"
495     WARNINGS="${WARNINGS}WARNING: $*\n"
496 }
497
498 die(){
499     log "$@"
500     echo "$error_color$bold_color$@$reset_color"
501     cat <<EOF
502
503 If you think configure made a mistake, make sure you are using the latest
504 version from Git.  If the latest version fails, report the problem to the
505 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
506 EOF
507     if disabled logging; then
508         cat <<EOF
509 Rerun configure with logging enabled (do not use --disable-logging), and
510 include the log this produces with your report.
511 EOF
512     else
513         cat <<EOF
514 Include the log file "$logfile" produced by configure as this will help
515 solve the problem.
516 EOF
517     fi
518     exit 1
519 }
520
521 # Avoid locale weirdness, besides we really just want to translate ASCII.
522 toupper(){
523     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
524 }
525
526 tolower(){
527     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
528 }
529
530 c_escape(){
531     echo "$*" | sed 's/["\\]/\\\0/g'
532 }
533
534 sh_quote(){
535     v=$(echo "$1" | sed "s/'/'\\\\''/g")
536     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
537     echo "$v"
538 }
539
540 cleanws(){
541     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
542 }
543
544 filter(){
545     pat=$1
546     shift
547     for v; do
548         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
549     done
550 }
551
552 filter_out(){
553     pat=$1
554     shift
555     for v; do
556         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
557     done
558 }
559
560 map(){
561     m=$1
562     shift
563     for v; do eval $m; done
564 }
565
566 add_suffix(){
567     suffix=$1
568     shift
569     for v; do echo ${v}${suffix}; done
570 }
571
572 remove_suffix(){
573     suffix=$1
574     shift
575     for v; do echo ${v%$suffix}; done
576 }
577
578 set_all(){
579     value=$1
580     shift
581     for var in $*; do
582         eval $var=$value
583     done
584 }
585
586 set_weak(){
587     value=$1
588     shift
589     for var; do
590         eval : \${$var:=$value}
591     done
592 }
593
594 sanitize_var_name(){
595     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
596 }
597
598 set_sanitized(){
599     var=$1
600     shift
601     eval $(sanitize_var_name "$var")='$*'
602 }
603
604 get_sanitized(){
605     eval echo \$$(sanitize_var_name "$1")
606 }
607
608 pushvar(){
609     for pvar in $*; do
610         eval level=\${${pvar}_level:=0}
611         eval ${pvar}_${level}="\$$pvar"
612         eval ${pvar}_level=$(($level+1))
613     done
614 }
615
616 popvar(){
617     for pvar in $*; do
618         eval level=\${${pvar}_level:-0}
619         test $level = 0 && continue
620         eval level=$(($level-1))
621         eval $pvar="\${${pvar}_${level}}"
622         eval ${pvar}_level=$level
623         eval unset ${pvar}_${level}
624     done
625 }
626
627 request(){
628     for var in $*; do
629         eval ${var}_requested=yes
630         eval $var=
631     done
632 }
633
634 enable(){
635     set_all yes $*
636 }
637
638 disable(){
639     set_all no $*
640 }
641
642 enable_weak(){
643     set_weak yes $*
644 }
645
646 disable_weak(){
647     set_weak no $*
648 }
649
650 enable_sanitized(){
651     for var; do
652         enable $(sanitize_var_name $var)
653     done
654 }
655
656 disable_sanitized(){
657     for var; do
658         disable $(sanitize_var_name $var)
659     done
660 }
661
662 do_enable_deep(){
663     for var; do
664         enabled $var && continue
665         eval sel="\$${var}_select"
666         eval sgs="\$${var}_suggest"
667         pushvar var sgs
668         enable_deep $sel
669         popvar sgs
670         enable_deep_weak $sgs
671         popvar var
672     done
673 }
674
675 enable_deep(){
676     do_enable_deep $*
677     enable $*
678 }
679
680 enable_deep_weak(){
681     for var; do
682         disabled $var && continue
683         pushvar var
684         do_enable_deep $var
685         popvar var
686         enable_weak $var
687     done
688 }
689
690 requested(){
691     test "${1#!}" = "$1" && op="=" || op="!="
692     eval test "x\$${1#!}_requested" $op "xyes"
693 }
694
695 enabled(){
696     test "${1#!}" = "$1" && op="=" || op="!="
697     eval test "x\$${1#!}" $op "xyes"
698 }
699
700 disabled(){
701     test "${1#!}" = "$1" && op="=" || op="!="
702     eval test "x\$${1#!}" $op "xno"
703 }
704
705 enabled_all(){
706     for opt; do
707         enabled $opt || return 1
708     done
709 }
710
711 disabled_all(){
712     for opt; do
713         disabled $opt || return 1
714     done
715 }
716
717 enabled_any(){
718     for opt; do
719         enabled $opt && return 0
720     done
721 }
722
723 disabled_any(){
724     for opt; do
725         disabled $opt && return 0
726     done
727     return 1
728 }
729
730 set_default(){
731     for opt; do
732         eval : \${$opt:=\$${opt}_default}
733     done
734 }
735
736 is_in(){
737     value=$1
738     shift
739     for var in $*; do
740         [ $var = $value ] && return 0
741     done
742     return 1
743 }
744
745 check_deps(){
746     for cfg; do
747         enabled ${cfg}_checking && die "Circular dependency for $cfg."
748         disabled ${cfg}_checking && continue
749         enable ${cfg}_checking
750
751         eval dep_all="\$${cfg}_deps"
752         eval dep_any="\$${cfg}_deps_any"
753         eval dep_con="\$${cfg}_conflict"
754         eval dep_sel="\$${cfg}_select"
755         eval dep_sgs="\$${cfg}_suggest"
756         eval dep_ifa="\$${cfg}_if"
757         eval dep_ifn="\$${cfg}_if_any"
758
759         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
760         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
761         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
762
763         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
764         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
765         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
766         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
767         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
768         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
769
770         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
771
772         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
773             # filter out library deps, these do not belong in extralibs
774             is_in $dep $LIBRARY_LIST && continue
775             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
776         done
777
778         disable ${cfg}_checking
779     done
780 }
781
782 print_config(){
783     pfx=$1
784     files=$2
785     shift 2
786     map 'eval echo "$v \${$v:-no}"' "$@" |
787     awk "BEGIN { split(\"$files\", files) }
788         {
789             c = \"$pfx\" toupper(\$1);
790             v = \$2;
791             sub(/yes/, 1, v);
792             sub(/no/,  0, v);
793             for (f in files) {
794                 file = files[f];
795                 if (file ~ /\\.h\$/) {
796                     printf(\"#define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.asm\$/) {
798                     printf(\"%%define %s %d\\n\", c, v) >>file;
799                 } else if (file ~ /\\.mak\$/) {
800                     n = -v ? \"\" : \"!\";
801                     printf(\"%s%s=yes\\n\", n, c) >>file;
802                 } else if (file ~ /\\.texi\$/) {
803                     pre = -v ? \"\" : \"@c \";
804                     yesno = \$2;
805                     c2 = tolower(c);
806                     gsub(/_/, \"-\", c2);
807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
808                 }
809             }
810         }"
811 }
812
813 print_enabled(){
814     suf=$1
815     shift
816     for v; do
817         enabled $v && printf "%s\n" ${v%$suf}
818     done
819 }
820
821 append(){
822     var=$1
823     shift
824     eval "$var=\"\$$var $*\""
825 }
826
827 prepend(){
828     var=$1
829     shift
830     eval "$var=\"$* \$$var\""
831 }
832
833 unique(){
834     var=$1
835     uniq_list=""
836     for tok in $(eval echo \$$var); do
837         uniq_list="$(filter_out $tok $uniq_list) $tok"
838     done
839     eval "$var=\"${uniq_list}\""
840 }
841
842 resolve(){
843     var=$1
844     tmpvar=
845     for entry in $(eval echo \$$var); do
846         tmpvar="$tmpvar $(eval echo \$${entry})"
847     done
848     eval "$var=\"${tmpvar}\""
849 }
850
851 add_cppflags(){
852     append CPPFLAGS "$@"
853 }
854
855 add_cflags(){
856     append CFLAGS $($cflags_filter "$@")
857 }
858
859 add_cflags_headers(){
860     append CFLAGS_HEADERS $($cflags_filter "$@")
861 }
862
863 add_cxxflags(){
864     append CXXFLAGS $($cflags_filter "$@")
865 }
866
867 add_asflags(){
868     append ASFLAGS $($asflags_filter "$@")
869 }
870
871 add_objcflags(){
872     append OBJCFLAGS $($objcflags_filter "$@")
873 }
874
875 add_ldflags(){
876     append LDFLAGS $($ldflags_filter "$@")
877 }
878
879 add_ldexeflags(){
880     append LDEXEFLAGS $($ldflags_filter "$@")
881 }
882
883 add_ldsoflags(){
884     append LDSOFLAGS $($ldflags_filter "$@")
885 }
886
887 add_stripflags(){
888     append ASMSTRIPFLAGS "$@"
889 }
890
891 add_extralibs(){
892     prepend extralibs $($ldflags_filter "$@")
893 }
894
895 add_host_cppflags(){
896     append host_cppflags "$@"
897 }
898
899 add_host_cflags(){
900     append host_cflags $($host_cflags_filter "$@")
901 }
902
903 add_host_ldflags(){
904     append host_ldflags $($host_ldflags_filter "$@")
905 }
906
907 add_compat(){
908     append compat_objs $1
909     shift
910     map 'add_cppflags -D$v' "$@"
911 }
912
913 check_cmd(){
914     log "$@"
915     "$@" >> $logfile 2>&1
916 }
917
918 check_stat(){
919     log check_stat "$@"
920     stat "$1" >> $logfile 2>&1
921 }
922
923 cc_o(){
924     eval printf '%s\\n' $CC_O
925 }
926
927 cc_e(){
928     eval printf '%s\\n' $CC_E
929 }
930
931 check_cc(){
932     log check_cc "$@"
933     cat > $TMPC
934     log_file $TMPC
935     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
936 }
937
938 check_cxx(){
939     log check_cxx "$@"
940     cat > $TMPCPP
941     log_file $TMPCPP
942     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
943 }
944
945 check_objcc(){
946     log check_objcc "$@"
947     cat > $TMPM
948     log_file $TMPM
949     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
950 }
951
952 check_cpp(){
953     log check_cpp "$@"
954     cat > $TMPC
955     log_file $TMPC
956     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
957 }
958
959 as_o(){
960     eval printf '%s\\n' $AS_O
961 }
962
963 check_as(){
964     log check_as "$@"
965     cat > $TMPS
966     log_file $TMPS
967     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
968 }
969
970 check_inline_asm(){
971     log check_inline_asm "$@"
972     name="$1"
973     code="$2"
974     shift 2
975     disable $name
976     check_cc "$@" <<EOF && enable $name
977 void foo(void){ __asm__ volatile($code); }
978 EOF
979 }
980
981 check_inline_asm_flags(){
982     log check_inline_asm_flags "$@"
983     name="$1"
984     code="$2"
985     flags=''
986     shift 2
987     while [ "$1" != "" ]; do
988       append flags $1
989       shift
990     done;
991     disable $name
992     cat > $TMPC <<EOF
993 void foo(void){ __asm__ volatile($code); }
994 EOF
995     log_file $TMPC
996     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
997     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
998 }
999
1000 check_insn(){
1001     log check_insn "$@"
1002     check_inline_asm ${1}_inline "\"$2\""
1003     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
1004 }
1005
1006 check_x86asm(){
1007     log check_x86asm "$@"
1008     echo "$1" > $TMPS
1009     log_file $TMPS
1010     shift 1
1011     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1012 }
1013
1014 ld_o(){
1015     eval printf '%s\\n' $LD_O
1016 }
1017
1018 check_ld(){
1019     log check_ld "$@"
1020     type=$1
1021     shift 1
1022     flags=$(filter_out '-l*|*.so' $@)
1023     libs=$(filter '-l*|*.so' $@)
1024     check_$type $($cflags_filter $flags) || return
1025     flags=$($ldflags_filter $flags)
1026     libs=$($ldflags_filter $libs)
1027     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1028 }
1029
1030 print_include(){
1031     hdr=$1
1032     test "${hdr%.h}" = "${hdr}" &&
1033         echo "#include $hdr"    ||
1034         echo "#include <$hdr>"
1035 }
1036
1037 check_code(){
1038     log check_code "$@"
1039     check=$1
1040     headers=$2
1041     code=$3
1042     shift 3
1043     {
1044         for hdr in $headers; do
1045             print_include $hdr
1046         done
1047         echo "int main(void) { $code; return 0; }"
1048     } | check_$check "$@"
1049 }
1050
1051 check_cppflags(){
1052     log check_cppflags "$@"
1053     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1054 #include <stdlib.h>
1055 EOF
1056 }
1057
1058 test_cflags(){
1059     log test_cflags "$@"
1060     set -- $($cflags_filter "$@")
1061     check_cc "$@" <<EOF
1062 int x;
1063 EOF
1064 }
1065
1066 check_cflags(){
1067     log check_cflags "$@"
1068     test_cflags "$@" && add_cflags "$@"
1069 }
1070
1071 check_cxxflags(){
1072     log check_cxxflags "$@"
1073     set -- $($cflags_filter "$@")
1074     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1075 int x;
1076 EOF
1077 }
1078
1079 test_objcflags(){
1080     log test_objcflags "$@"
1081     set -- $($objcflags_filter "$@")
1082     check_objcc "$@" <<EOF
1083 int x;
1084 EOF
1085 }
1086
1087 check_objcflags(){
1088     log check_objcflags "$@"
1089     test_objcflags "$@" && add_objcflags "$@"
1090 }
1091
1092 test_ldflags(){
1093     log test_ldflags "$@"
1094     set -- $($ldflags_filter "$@")
1095     check_ld "cc" "$@" <<EOF
1096 int main(void){ return 0; }
1097 EOF
1098 }
1099
1100 check_ldflags(){
1101     log check_ldflags "$@"
1102     test_ldflags "$@" && add_ldflags "$@"
1103 }
1104
1105 test_stripflags(){
1106     log test_stripflags "$@"
1107     # call check_cc to get a fresh TMPO
1108     check_cc <<EOF
1109 int main(void) { return 0; }
1110 EOF
1111     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1112 }
1113
1114 check_stripflags(){
1115     log check_stripflags "$@"
1116     test_stripflags "$@" && add_stripflags "$@"
1117 }
1118
1119 check_header(){
1120     log check_header "$@"
1121     headers=$1
1122     shift
1123     disable_sanitized $headers
1124     {
1125         for hdr in $headers; do
1126             print_include $hdr
1127         done
1128         echo "int x;"
1129     } | check_cpp "$@" && enable_sanitized $headers
1130 }
1131
1132 check_header_objcc(){
1133     log check_header_objcc "$@"
1134     rm -f -- "$TMPO"
1135     header=$1
1136     shift
1137     disable_sanitized $header
1138     {
1139        echo "#include <$header>"
1140        echo "int main(void) { return 0; }"
1141     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1142 }
1143
1144 check_apple_framework(){
1145     log check_apple_framework "$@"
1146     framework="$1"
1147     name="$(tolower $framework)"
1148     header="${framework}/${framework}.h"
1149     disable $name
1150     check_header_objcc $header &&
1151         enable $name && eval ${name}_extralibs='"-framework $framework"'
1152 }
1153
1154 check_func(){
1155     log check_func "$@"
1156     func=$1
1157     shift
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 extern int $func();
1161 int main(void){ $func(); }
1162 EOF
1163 }
1164
1165 check_complexfunc(){
1166     log check_complexfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f * I"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <complex.h>
1174 #include <math.h>
1175 float foo(complex float f, complex float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_mathfunc(){
1181     log check_mathfunc "$@"
1182     func=$1
1183     narg=$2
1184     shift 2
1185     test $narg = 2 && args="f, g" || args="f"
1186     disable $func
1187     check_ld "cc" "$@" <<EOF && enable $func
1188 #include <math.h>
1189 float foo(float f, float g) { return $func($args); }
1190 int main(void){ return (int) foo; }
1191 EOF
1192 }
1193
1194 check_func_headers(){
1195     log check_func_headers "$@"
1196     headers=$1
1197     funcs=$2
1198     shift 2
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "#include <stdint.h>"
1204         for func in $funcs; do
1205             echo "long check_$func(void) { return (long) $func; }"
1206         done
1207         echo "int main(void) { int ret = 0;"
1208         # LTO could optimize out the test functions without this
1209         for func in $funcs; do
1210             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1211         done
1212         echo "return ret; }"
1213     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1214 }
1215
1216 check_class_headers_cpp(){
1217     log check_class_headers_cpp "$@"
1218     headers=$1
1219     classes=$2
1220     shift 2
1221     {
1222         for hdr in $headers; do
1223             echo "#include <$hdr>"
1224         done
1225         echo "int main(void) { "
1226         i=1
1227         for class in $classes; do
1228             echo "$class obj$i;"
1229             i=$(expr $i + 1)
1230         done
1231         echo "return 0; }"
1232     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1233 }
1234
1235 check_cpp_condition(){
1236     log check_cpp_condition "$@"
1237     header=$1
1238     condition=$2
1239     shift 2
1240     check_cpp "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 test_cflags_cc(){
1249     log test_cflags_cc "$@"
1250     flags=$1
1251     header=$2
1252     condition=$3
1253     shift 3
1254     set -- $($cflags_filter "$flags")
1255     check_cc "$@" <<EOF
1256 #include <$header>
1257 #if !($condition)
1258 #error "unsatisfied condition: $condition"
1259 #endif
1260 EOF
1261 }
1262
1263 check_lib(){
1264     log check_lib "$@"
1265     name="$1"
1266     headers="$2"
1267     funcs="$3"
1268     shift 3
1269     disable $name
1270     check_func_headers "$headers" "$funcs" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 check_lib_cpp(){
1275     log check_lib_cpp "$@"
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     disable $name
1281     check_class_headers_cpp "$headers" "$classes" "$@" &&
1282         enable $name && eval ${name}_extralibs="\$@"
1283 }
1284
1285 test_pkg_config(){
1286     log test_pkg_config "$@"
1287     name="$1"
1288     pkg_version="$2"
1289     pkg="${2%% *}"
1290     headers="$3"
1291     funcs="$4"
1292     shift 4
1293     disable $name
1294     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1295     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1296     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1297     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1298         enable $name &&
1299         set_sanitized "${name}_cflags"    $pkg_cflags &&
1300         set_sanitized "${name}_extralibs" $pkg_libs
1301 }
1302
1303 check_pkg_config(){
1304     log check_pkg_config "$@"
1305     name="$1"
1306     test_pkg_config "$@" &&
1307         eval add_cflags \$${name}_cflags
1308 }
1309
1310 check_exec(){
1311     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1312 }
1313
1314 check_exec_crash(){
1315     log check_exec_crash "$@"
1316     code=$(cat)
1317
1318     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1319     # are safe but may not be available everywhere.  Thus we use
1320     # raise(SIGTERM) instead.  The check is run in a subshell so we
1321     # can redirect the "Terminated" message from the shell.  SIGBUS
1322     # is not defined by standard C so it is used conditionally.
1323
1324     (check_exec "$@") >> $logfile 2>&1 <<EOF
1325 #include <signal.h>
1326 static void sighandler(int sig){
1327     raise(SIGTERM);
1328 }
1329 int foo(void){
1330     $code
1331 }
1332 int (*func_ptr)(void) = foo;
1333 int main(void){
1334     signal(SIGILL, sighandler);
1335     signal(SIGFPE, sighandler);
1336     signal(SIGSEGV, sighandler);
1337 #ifdef SIGBUS
1338     signal(SIGBUS, sighandler);
1339 #endif
1340     return func_ptr();
1341 }
1342 EOF
1343 }
1344
1345 check_type(){
1346     log check_type "$@"
1347     headers=$1
1348     type=$2
1349     shift 2
1350     disable_sanitized "$type"
1351     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1352 }
1353
1354 check_struct(){
1355     log check_struct "$@"
1356     headers=$1
1357     struct=$2
1358     member=$3
1359     shift 3
1360     disable_sanitized "${struct}_${member}"
1361     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1362         enable_sanitized "${struct}_${member}"
1363 }
1364
1365 check_builtin(){
1366     log check_builtin "$@"
1367     name=$1
1368     headers=$2
1369     builtin=$3
1370     shift 3
1371     disable "$name"
1372     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1373 }
1374
1375 check_compile_assert(){
1376     log check_compile_assert "$@"
1377     name=$1
1378     headers=$2
1379     condition=$3
1380     shift 3
1381     disable "$name"
1382     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1383 }
1384
1385 require(){
1386     log require "$@"
1387     name_version="$1"
1388     name="${1%% *}"
1389     headers="$2"
1390     func="$3"
1391     shift 3
1392     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1393 }
1394
1395 require_cpp(){
1396     name="$1"
1397     headers="$2"
1398     classes="$3"
1399     shift 3
1400     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1401 }
1402
1403 require_header(){
1404     log require_header "$@"
1405     headers="$1"
1406     shift
1407     check_header "$headers" "$@" || die "ERROR: $headers not found"
1408 }
1409
1410 require_cpp_condition(){
1411     log require_cpp_condition "$@"
1412     header="$1"
1413     condition="$2"
1414     shift 2
1415     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1416 }
1417
1418 require_pkg_config(){
1419     log require_pkg_config "$@"
1420     pkg_version="$2"
1421     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1422 }
1423
1424 hostcc_e(){
1425     eval printf '%s\\n' $HOSTCC_E
1426 }
1427
1428 hostcc_o(){
1429     eval printf '%s\\n' $HOSTCC_O
1430 }
1431
1432 check_host_cc(){
1433     log check_host_cc "$@"
1434     cat > $TMPC
1435     log_file $TMPC
1436     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1437 }
1438
1439 check_host_cpp(){
1440     log check_host_cpp "$@"
1441     cat > $TMPC
1442     log_file $TMPC
1443     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1444 }
1445
1446 check_host_cppflags(){
1447     log check_host_cppflags "$@"
1448     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1449 #include <stdlib.h>
1450 EOF
1451 }
1452
1453 check_host_cflags(){
1454     log check_host_cflags "$@"
1455     set -- $($host_cflags_filter "$@")
1456     check_host_cc "$@" <<EOF && append host_cflags "$@"
1457 int x;
1458 EOF
1459 }
1460
1461 check_host_cpp_condition(){
1462     log check_host_cpp_condition "$@"
1463     header=$1
1464     condition=$2
1465     shift 2
1466     check_host_cpp "$@" <<EOF
1467 #include <$header>
1468 #if !($condition)
1469 #error "unsatisfied condition: $condition"
1470 #endif
1471 EOF
1472 }
1473
1474 cp_if_changed(){
1475     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1476     mkdir -p "$(dirname $2)"
1477     cp -f "$1" "$2"
1478 }
1479
1480 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1481 # system-dependent things.
1482
1483 AVCODEC_COMPONENTS="
1484     bsfs
1485     decoders
1486     encoders
1487     hwaccels
1488     parsers
1489 "
1490
1491 AVDEVICE_COMPONENTS="
1492     indevs
1493     outdevs
1494 "
1495
1496 AVFILTER_COMPONENTS="
1497     filters
1498 "
1499
1500 AVFORMAT_COMPONENTS="
1501     demuxers
1502     muxers
1503     protocols
1504 "
1505
1506 COMPONENT_LIST="
1507     $AVCODEC_COMPONENTS
1508     $AVDEVICE_COMPONENTS
1509     $AVFILTER_COMPONENTS
1510     $AVFORMAT_COMPONENTS
1511 "
1512
1513 EXAMPLE_LIST="
1514     avio_dir_cmd_example
1515     avio_reading_example
1516     decode_audio_example
1517     decode_video_example
1518     demuxing_decoding_example
1519     encode_audio_example
1520     encode_video_example
1521     extract_mvs_example
1522     filter_audio_example
1523     filtering_audio_example
1524     filtering_video_example
1525     http_multiclient_example
1526     hw_decode_example
1527     metadata_example
1528     muxing_example
1529     qsvdec_example
1530     remuxing_example
1531     resampling_audio_example
1532     scaling_video_example
1533     transcode_aac_example
1534     transcoding_example
1535     vaapi_encode_example
1536     vaapi_transcode_example
1537 "
1538
1539 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1540     alsa
1541     appkit
1542     avfoundation
1543     bzlib
1544     coreimage
1545     iconv
1546     libxcb
1547     libxcb_shm
1548     libxcb_shape
1549     libxcb_xfixes
1550     lzma
1551     schannel
1552     sdl2
1553     securetransport
1554     sndio
1555     xlib
1556     zlib
1557 "
1558
1559 EXTERNAL_LIBRARY_GPL_LIST="
1560     avisynth
1561     frei0r
1562     libcdio
1563     librubberband
1564     libvidstab
1565     libx264
1566     libx265
1567     libxavs
1568     libxvid
1569 "
1570
1571 EXTERNAL_LIBRARY_NONFREE_LIST="
1572     decklink
1573     libndi_newtek
1574     libfdk_aac
1575     openssl
1576     libtls
1577 "
1578
1579 EXTERNAL_LIBRARY_VERSION3_LIST="
1580     gmp
1581     libopencore_amrnb
1582     libopencore_amrwb
1583     libvmaf
1584     libvo_amrwbenc
1585     rkmpp
1586 "
1587
1588 EXTERNAL_LIBRARY_GPLV3_LIST="
1589     libsmbclient
1590 "
1591
1592 EXTERNAL_LIBRARY_LIST="
1593     $EXTERNAL_LIBRARY_GPL_LIST
1594     $EXTERNAL_LIBRARY_NONFREE_LIST
1595     $EXTERNAL_LIBRARY_VERSION3_LIST
1596     $EXTERNAL_LIBRARY_GPLV3_LIST
1597     chromaprint
1598     gcrypt
1599     gnutls
1600     jni
1601     ladspa
1602     libass
1603     libbluray
1604     libbs2b
1605     libcaca
1606     libcelt
1607     libcodec2
1608     libdc1394
1609     libdrm
1610     libflite
1611     libfontconfig
1612     libfreetype
1613     libfribidi
1614     libgme
1615     libgsm
1616     libiec61883
1617     libilbc
1618     libjack
1619     libkvazaar
1620     libmodplug
1621     libmp3lame
1622     libmysofa
1623     libopencv
1624     libopenh264
1625     libopenjpeg
1626     libopenmpt
1627     libopus
1628     libpulse
1629     librsvg
1630     librtmp
1631     libshine
1632     libsmbclient
1633     libsnappy
1634     libsoxr
1635     libspeex
1636     libssh
1637     libtesseract
1638     libtheora
1639     libtwolame
1640     libv4l2
1641     libvorbis
1642     libvpx
1643     libwavpack
1644     libwebp
1645     libxml2
1646     libzimg
1647     libzmq
1648     libzvbi
1649     lv2
1650     mediacodec
1651     openal
1652     opengl
1653 "
1654
1655 HWACCEL_AUTODETECT_LIBRARY_LIST="
1656     amf
1657     audiotoolbox
1658     crystalhd
1659     cuda
1660     cuvid
1661     d3d11va
1662     dxva2
1663     ffnvcodec
1664     nvdec
1665     nvenc
1666     vaapi
1667     vdpau
1668     videotoolbox
1669     v4l2_m2m
1670     xvmc
1671 "
1672
1673 # catchall list of things that require external libs to link
1674 EXTRALIBS_LIST="
1675     cpu_init
1676     cws2fws
1677 "
1678
1679 HWACCEL_LIBRARY_NONFREE_LIST="
1680     cuda_sdk
1681     libnpp
1682 "
1683
1684 HWACCEL_LIBRARY_LIST="
1685     $HWACCEL_LIBRARY_NONFREE_LIST
1686     libmfx
1687     mmal
1688     omx
1689     opencl
1690 "
1691
1692 DOCUMENT_LIST="
1693     doc
1694     htmlpages
1695     manpages
1696     podpages
1697     txtpages
1698 "
1699
1700 FEATURE_LIST="
1701     ftrapv
1702     gray
1703     hardcoded_tables
1704     omx_rpi
1705     runtime_cpudetect
1706     safe_bitstream_reader
1707     shared
1708     small
1709     static
1710     swscale_alpha
1711 "
1712
1713 LIBRARY_LIST="
1714     avcodec
1715     avdevice
1716     avfilter
1717     avformat
1718     avresample
1719     avutil
1720     postproc
1721     swresample
1722     swscale
1723 "
1724
1725 LICENSE_LIST="
1726     gpl
1727     nonfree
1728     version3
1729 "
1730
1731 PROGRAM_LIST="
1732     ffplay
1733     ffprobe
1734     ffmpeg
1735 "
1736
1737 SUBSYSTEM_LIST="
1738     dct
1739     dwt
1740     error_resilience
1741     faan
1742     fast_unaligned
1743     fft
1744     lsp
1745     lzo
1746     mdct
1747     pixelutils
1748     network
1749     rdft
1750 "
1751
1752 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1753 CONFIG_LIST="
1754     $DOCUMENT_LIST
1755     $EXAMPLE_LIST
1756     $EXTERNAL_LIBRARY_LIST
1757     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1758     $HWACCEL_LIBRARY_LIST
1759     $HWACCEL_AUTODETECT_LIBRARY_LIST
1760     $FEATURE_LIST
1761     $LICENSE_LIST
1762     $LIBRARY_LIST
1763     $PROGRAM_LIST
1764     $SUBSYSTEM_LIST
1765     autodetect
1766     fontconfig
1767     linux_perf
1768     memory_poisoning
1769     neon_clobber_test
1770     ossfuzz
1771     pic
1772     thumb
1773     valgrind_backtrace
1774     xmm_clobber_test
1775     $COMPONENT_LIST
1776 "
1777
1778 THREADS_LIST="
1779     pthreads
1780     os2threads
1781     w32threads
1782 "
1783
1784 ATOMICS_LIST="
1785     atomics_gcc
1786     atomics_suncc
1787     atomics_win32
1788 "
1789
1790 AUTODETECT_LIBS="
1791     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1792     $HWACCEL_AUTODETECT_LIBRARY_LIST
1793     $THREADS_LIST
1794 "
1795
1796 ARCH_LIST="
1797     aarch64
1798     alpha
1799     arm
1800     avr32
1801     avr32_ap
1802     avr32_uc
1803     bfin
1804     ia64
1805     m68k
1806     mips
1807     mips64
1808     parisc
1809     ppc
1810     ppc64
1811     s390
1812     sh4
1813     sparc
1814     sparc64
1815     tilegx
1816     tilepro
1817     tomi
1818     x86
1819     x86_32
1820     x86_64
1821 "
1822
1823 ARCH_EXT_LIST_ARM="
1824     armv5te
1825     armv6
1826     armv6t2
1827     armv8
1828     neon
1829     vfp
1830     vfpv3
1831     setend
1832 "
1833
1834 ARCH_EXT_LIST_MIPS="
1835     mipsfpu
1836     mips32r2
1837     mips32r5
1838     mips64r2
1839     mips32r6
1840     mips64r6
1841     mipsdsp
1842     mipsdspr2
1843     msa
1844 "
1845
1846 ARCH_EXT_LIST_LOONGSON="
1847     loongson2
1848     loongson3
1849     mmi
1850 "
1851
1852 ARCH_EXT_LIST_X86_SIMD="
1853     aesni
1854     amd3dnow
1855     amd3dnowext
1856     avx
1857     avx2
1858     avx512
1859     fma3
1860     fma4
1861     mmx
1862     mmxext
1863     sse
1864     sse2
1865     sse3
1866     sse4
1867     sse42
1868     ssse3
1869     xop
1870 "
1871
1872 ARCH_EXT_LIST_PPC="
1873     altivec
1874     dcbzl
1875     ldbrx
1876     power8
1877     ppc4xx
1878     vsx
1879 "
1880
1881 ARCH_EXT_LIST_X86="
1882     $ARCH_EXT_LIST_X86_SIMD
1883     cpunop
1884     i686
1885 "
1886
1887 ARCH_EXT_LIST="
1888     $ARCH_EXT_LIST_ARM
1889     $ARCH_EXT_LIST_PPC
1890     $ARCH_EXT_LIST_X86
1891     $ARCH_EXT_LIST_MIPS
1892     $ARCH_EXT_LIST_LOONGSON
1893 "
1894
1895 ARCH_FEATURES="
1896     aligned_stack
1897     fast_64bit
1898     fast_clz
1899     fast_cmov
1900     local_aligned
1901     simd_align_16
1902     simd_align_32
1903     simd_align_64
1904 "
1905
1906 BUILTIN_LIST="
1907     atomic_cas_ptr
1908     machine_rw_barrier
1909     MemoryBarrier
1910     mm_empty
1911     rdtsc
1912     sem_timedwait
1913     sync_val_compare_and_swap
1914 "
1915 HAVE_LIST_CMDLINE="
1916     inline_asm
1917     symver
1918     x86asm
1919 "
1920
1921 HAVE_LIST_PUB="
1922     bigendian
1923     fast_unaligned
1924 "
1925
1926 HEADERS_LIST="
1927     arpa_inet_h
1928     asm_types_h
1929     cdio_paranoia_h
1930     cdio_paranoia_paranoia_h
1931     cuda_h
1932     dispatch_dispatch_h
1933     dev_bktr_ioctl_bt848_h
1934     dev_bktr_ioctl_meteor_h
1935     dev_ic_bt8xx_h
1936     dev_video_bktr_ioctl_bt848_h
1937     dev_video_meteor_ioctl_meteor_h
1938     direct_h
1939     dirent_h
1940     dxgidebug_h
1941     dxva_h
1942     ES2_gl_h
1943     gsm_h
1944     io_h
1945     machine_ioctl_bt848_h
1946     machine_ioctl_meteor_h
1947     malloc_h
1948     opencv2_core_core_c_h
1949     OpenGL_gl3_h
1950     poll_h
1951     sys_param_h
1952     sys_resource_h
1953     sys_select_h
1954     sys_soundcard_h
1955     sys_time_h
1956     sys_un_h
1957     sys_videoio_h
1958     termios_h
1959     udplite_h
1960     unistd_h
1961     valgrind_valgrind_h
1962     windows_h
1963     winsock2_h
1964 "
1965
1966 INTRINSICS_LIST="
1967     intrinsics_neon
1968 "
1969
1970 COMPLEX_FUNCS="
1971     cabs
1972     cexp
1973 "
1974
1975 MATH_FUNCS="
1976     atanf
1977     atan2f
1978     cbrt
1979     cbrtf
1980     copysign
1981     cosf
1982     erf
1983     exp2
1984     exp2f
1985     expf
1986     hypot
1987     isfinite
1988     isinf
1989     isnan
1990     ldexpf
1991     llrint
1992     llrintf
1993     log2
1994     log2f
1995     log10f
1996     lrint
1997     lrintf
1998     powf
1999     rint
2000     round
2001     roundf
2002     sinf
2003     trunc
2004     truncf
2005 "
2006
2007 SYSTEM_FEATURES="
2008     dos_paths
2009     libc_msvcrt
2010     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2011     section_data_rel_ro
2012     threads
2013     uwp
2014     winrt
2015 "
2016
2017 SYSTEM_FUNCS="
2018     access
2019     aligned_malloc
2020     arc4random
2021     clock_gettime
2022     closesocket
2023     CommandLineToArgvW
2024     fcntl
2025     getaddrinfo
2026     gethrtime
2027     getopt
2028     GetProcessAffinityMask
2029     GetProcessMemoryInfo
2030     GetProcessTimes
2031     getrusage
2032     GetSystemTimeAsFileTime
2033     gettimeofday
2034     glob
2035     glXGetProcAddress
2036     gmtime_r
2037     inet_aton
2038     isatty
2039     kbhit
2040     localtime_r
2041     lstat
2042     lzo1x_999_compress
2043     mach_absolute_time
2044     MapViewOfFile
2045     memalign
2046     mkstemp
2047     mmap
2048     mprotect
2049     nanosleep
2050     PeekNamedPipe
2051     posix_memalign
2052     pthread_cancel
2053     sched_getaffinity
2054     SecItemImport
2055     SetConsoleTextAttribute
2056     SetConsoleCtrlHandler
2057     setmode
2058     setrlimit
2059     Sleep
2060     strerror_r
2061     sysconf
2062     sysctl
2063     usleep
2064     UTGetOSTypeFromString
2065     VirtualAlloc
2066     wglGetProcAddress
2067 "
2068
2069 SYSTEM_LIBRARIES="
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     wincrypt
2074 "
2075
2076 TOOLCHAIN_FEATURES="
2077     as_arch_directive
2078     as_fpu_directive
2079     as_func
2080     as_object_arch
2081     asm_mod_q
2082     blocks_extension
2083     ebp_available
2084     ebx_available
2085     gnu_as
2086     gnu_windres
2087     ibm_asm
2088     inline_asm_direct_symbol_refs
2089     inline_asm_labels
2090     inline_asm_nonlocal_labels
2091     pragma_deprecated
2092     rsync_contimeout
2093     symver_asm_label
2094     symver_gnu_asm
2095     vfp_args
2096     xform_asm
2097     xmm_clobbers
2098 "
2099
2100 TYPES_LIST="
2101     kCMVideoCodecType_HEVC
2102     socklen_t
2103     struct_addrinfo
2104     struct_group_source_req
2105     struct_ip_mreq_source
2106     struct_ipv6_mreq
2107     struct_msghdr_msg_flags
2108     struct_pollfd
2109     struct_rusage_ru_maxrss
2110     struct_sctp_event_subscribe
2111     struct_sockaddr_in6
2112     struct_sockaddr_sa_len
2113     struct_sockaddr_storage
2114     struct_stat_st_mtim_tv_nsec
2115     struct_v4l2_frmivalenum_discrete
2116 "
2117
2118 HAVE_LIST="
2119     $ARCH_EXT_LIST
2120     $(add_suffix _external $ARCH_EXT_LIST)
2121     $(add_suffix _inline   $ARCH_EXT_LIST)
2122     $ARCH_FEATURES
2123     $BUILTIN_LIST
2124     $COMPLEX_FUNCS
2125     $HAVE_LIST_CMDLINE
2126     $HAVE_LIST_PUB
2127     $HEADERS_LIST
2128     $INTRINSICS_LIST
2129     $MATH_FUNCS
2130     $SYSTEM_FEATURES
2131     $SYSTEM_FUNCS
2132     $SYSTEM_LIBRARIES
2133     $THREADS_LIST
2134     $TOOLCHAIN_FEATURES
2135     $TYPES_LIST
2136     makeinfo
2137     makeinfo_html
2138     opencl_d3d11
2139     opencl_drm_arm
2140     opencl_dxva2
2141     opencl_vaapi_beignet
2142     opencl_vaapi_intel_media
2143     perl
2144     pod2man
2145     texi2html
2146 "
2147
2148 # options emitted with CONFIG_ prefix but not available on the command line
2149 CONFIG_EXTRA="
2150     aandcttables
2151     ac3dsp
2152     adts_header
2153     audio_frame_queue
2154     audiodsp
2155     blockdsp
2156     bswapdsp
2157     cabac
2158     cbs
2159     cbs_h264
2160     cbs_h265
2161     cbs_mpeg2
2162     dirac_parse
2163     dvprofile
2164     exif
2165     faandct
2166     faanidct
2167     fdctdsp
2168     flacdsp
2169     fmtconvert
2170     frame_thread_encoder
2171     g722dsp
2172     golomb
2173     gplv3
2174     h263dsp
2175     h264chroma
2176     h264dsp
2177     h264parse
2178     h264pred
2179     h264qpel
2180     hevcparse
2181     hpeldsp
2182     huffman
2183     huffyuvdsp
2184     huffyuvencdsp
2185     idctdsp
2186     iirfilter
2187     mdct15
2188     intrax8
2189     iso_media
2190     ividsp
2191     jpegtables
2192     lgplv3
2193     libx262
2194     llauddsp
2195     llviddsp
2196     llvidencdsp
2197     lpc
2198     lzf
2199     me_cmp
2200     mpeg_er
2201     mpegaudio
2202     mpegaudiodsp
2203     mpegaudioheader
2204     mpegvideo
2205     mpegvideoenc
2206     mss34dsp
2207     pixblockdsp
2208     qpeldsp
2209     qsv
2210     qsvdec
2211     qsvenc
2212     qsvvpp
2213     rangecoder
2214     riffdec
2215     riffenc
2216     rtpdec
2217     rtpenc_chain
2218     rv34dsp
2219     sinewin
2220     snappy
2221     srtp
2222     startcode
2223     texturedsp
2224     texturedspenc
2225     tpeldsp
2226     vaapi_1
2227     vaapi_encode
2228     vc1dsp
2229     videodsp
2230     vp3dsp
2231     vp56dsp
2232     vp8dsp
2233     wma_freqs
2234     wmv2dsp
2235 "
2236
2237 CMDLINE_SELECT="
2238     $ARCH_EXT_LIST
2239     $CONFIG_LIST
2240     $HAVE_LIST_CMDLINE
2241     $THREADS_LIST
2242     asm
2243     cross_compile
2244     debug
2245     extra_warnings
2246     logging
2247     lto
2248     optimizations
2249     rpath
2250     stripping
2251 "
2252
2253 PATHS_LIST="
2254     bindir
2255     datadir
2256     docdir
2257     incdir
2258     libdir
2259     mandir
2260     pkgconfigdir
2261     prefix
2262     shlibdir
2263     install_name_dir
2264 "
2265
2266 CMDLINE_SET="
2267     $PATHS_LIST
2268     ar
2269     arch
2270     as
2271     assert_level
2272     build_suffix
2273     cc
2274     objcc
2275     cpu
2276     cross_prefix
2277     custom_allocator
2278     cxx
2279     dep_cc
2280     doxygen
2281     env
2282     extra_version
2283     gas
2284     host_cc
2285     host_cflags
2286     host_extralibs
2287     host_ld
2288     host_ldflags
2289     host_os
2290     ignore_tests
2291     install
2292     ld
2293     ln_s
2294     logfile
2295     malloc_prefix
2296     nm
2297     optflags
2298     nvccflags
2299     pkg_config
2300     pkg_config_flags
2301     progs_suffix
2302     random_seed
2303     ranlib
2304     samples
2305     strip
2306     sws_max_filter_size
2307     sysinclude
2308     sysroot
2309     target_exec
2310     target_os
2311     target_path
2312     target_samples
2313     tempprefix
2314     toolchain
2315     valgrind
2316     x86asmexe
2317 "
2318
2319 CMDLINE_APPEND="
2320     extra_cflags
2321     extra_cxxflags
2322     extra_objcflags
2323     host_cppflags
2324 "
2325
2326 # code dependency declarations
2327
2328 # architecture extensions
2329
2330 armv5te_deps="arm"
2331 armv6_deps="arm"
2332 armv6t2_deps="arm"
2333 armv8_deps="aarch64"
2334 neon_deps_any="aarch64 arm"
2335 intrinsics_neon_deps="neon"
2336 vfp_deps_any="aarch64 arm"
2337 vfpv3_deps="vfp"
2338 setend_deps="arm"
2339
2340 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2341
2342 altivec_deps="ppc"
2343 dcbzl_deps="ppc"
2344 ldbrx_deps="ppc"
2345 ppc4xx_deps="ppc"
2346 vsx_deps="altivec"
2347 power8_deps="vsx"
2348
2349 loongson2_deps="mips"
2350 loongson3_deps="mips"
2351 mips32r2_deps="mips"
2352 mips32r5_deps="mips"
2353 mips32r6_deps="mips"
2354 mips64r2_deps="mips"
2355 mips64r6_deps="mips"
2356 mipsfpu_deps="mips"
2357 mipsdsp_deps="mips"
2358 mipsdspr2_deps="mips"
2359 mmi_deps="mips"
2360 msa_deps="mipsfpu"
2361
2362 cpunop_deps="i686"
2363 x86_64_select="i686"
2364 x86_64_suggest="fast_cmov"
2365
2366 amd3dnow_deps="mmx"
2367 amd3dnowext_deps="amd3dnow"
2368 i686_deps="x86"
2369 mmx_deps="x86"
2370 mmxext_deps="mmx"
2371 sse_deps="mmxext"
2372 sse2_deps="sse"
2373 sse3_deps="sse2"
2374 ssse3_deps="sse3"
2375 sse4_deps="ssse3"
2376 sse42_deps="sse4"
2377 aesni_deps="sse42"
2378 avx_deps="sse42"
2379 xop_deps="avx"
2380 fma3_deps="avx"
2381 fma4_deps="avx"
2382 avx2_deps="avx"
2383 avx512_deps="avx2"
2384
2385 mmx_external_deps="x86asm"
2386 mmx_inline_deps="inline_asm x86"
2387 mmx_suggest="mmx_external mmx_inline"
2388
2389 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2390     eval dep=\$${ext}_deps
2391     eval ${ext}_external_deps='"${dep}_external"'
2392     eval ${ext}_inline_deps='"${dep}_inline"'
2393     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2394 done
2395
2396 aligned_stack_if_any="aarch64 ppc x86"
2397 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2398 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2399 fast_unaligned_if_any="aarch64 ppc x86"
2400 simd_align_16_if_any="altivec neon sse"
2401 simd_align_32_if_any="avx"
2402 simd_align_64_if_any="avx512"
2403
2404 # system capabilities
2405 symver_if_any="symver_asm_label symver_gnu_asm"
2406 valgrind_backtrace_conflict="optimizations"
2407 valgrind_backtrace_deps="valgrind_valgrind_h"
2408
2409 # threading support
2410 atomics_gcc_if="sync_val_compare_and_swap"
2411 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2412 atomics_win32_if="MemoryBarrier"
2413 atomics_native_if_any="$ATOMICS_LIST"
2414 w32threads_deps="atomics_native"
2415 threads_if_any="$THREADS_LIST"
2416
2417 # subsystems
2418 cbs_h264_select="cbs golomb"
2419 cbs_h265_select="cbs golomb"
2420 cbs_mpeg2_select="cbs"
2421 dct_select="rdft"
2422 dirac_parse_select="golomb"
2423 error_resilience_select="me_cmp"
2424 faandct_deps="faan"
2425 faandct_select="fdctdsp"
2426 faanidct_deps="faan"
2427 faanidct_select="idctdsp"
2428 h264dsp_select="startcode"
2429 hevcparse_select="golomb"
2430 frame_thread_encoder_deps="encoders threads"
2431 intrax8_select="blockdsp idctdsp"
2432 mdct_select="fft"
2433 mdct15_select="fft"
2434 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2435 mpeg_er_select="error_resilience"
2436 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2437 mpegaudiodsp_select="dct"
2438 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2439 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2440 vc1dsp_select="h264chroma qpeldsp startcode"
2441 rdft_select="fft"
2442
2443 # decoders / encoders
2444 aac_decoder_select="adts_header mdct15 mdct sinewin"
2445 aac_fixed_decoder_select="mdct sinewin"
2446 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2447 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2448 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2449 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2450 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2451 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2452 adpcm_g722_decoder_select="g722dsp"
2453 adpcm_g722_encoder_select="g722dsp"
2454 aic_decoder_select="golomb idctdsp"
2455 alac_encoder_select="lpc"
2456 als_decoder_select="bswapdsp"
2457 amrnb_decoder_select="lsp"
2458 amrwb_decoder_select="lsp"
2459 amv_decoder_select="sp5x_decoder exif"
2460 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2461 ape_decoder_select="bswapdsp llauddsp"
2462 apng_decoder_deps="zlib"
2463 apng_encoder_deps="zlib"
2464 apng_encoder_select="llvidencdsp"
2465 aptx_decoder_select="audio_frame_queue"
2466 aptx_encoder_select="audio_frame_queue"
2467 aptx_hd_decoder_select="audio_frame_queue"
2468 aptx_hd_encoder_select="audio_frame_queue"
2469 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2470 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2471 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2472 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2473 atrac1_decoder_select="mdct sinewin"
2474 atrac3_decoder_select="mdct"
2475 atrac3p_decoder_select="mdct sinewin"
2476 avrn_decoder_select="exif jpegtables"
2477 bink_decoder_select="blockdsp hpeldsp"
2478 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2479 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2480 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2481 clearvideo_decoder_select="idctdsp"
2482 cllc_decoder_select="bswapdsp"
2483 comfortnoise_encoder_select="lpc"
2484 cook_decoder_select="audiodsp mdct sinewin"
2485 cscd_decoder_select="lzo"
2486 cscd_decoder_suggest="zlib"
2487 dca_decoder_select="mdct"
2488 dds_decoder_select="texturedsp"
2489 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2490 dnxhd_decoder_select="blockdsp idctdsp"
2491 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2492 dolby_e_decoder_select="mdct"
2493 dvvideo_decoder_select="dvprofile idctdsp"
2494 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2495 dxa_decoder_deps="zlib"
2496 dxv_decoder_select="lzf texturedsp"
2497 eac3_decoder_select="ac3_decoder"
2498 eac3_encoder_select="ac3_encoder"
2499 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2500 eatgq_decoder_select="aandcttables"
2501 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2502 exr_decoder_deps="zlib"
2503 ffv1_decoder_select="rangecoder"
2504 ffv1_encoder_select="rangecoder"
2505 ffvhuff_decoder_select="huffyuv_decoder"
2506 ffvhuff_encoder_select="huffyuv_encoder"
2507 fic_decoder_select="golomb"
2508 flac_decoder_select="flacdsp"
2509 flac_encoder_select="bswapdsp flacdsp lpc"
2510 flashsv2_decoder_deps="zlib"
2511 flashsv2_encoder_deps="zlib"
2512 flashsv_decoder_deps="zlib"
2513 flashsv_encoder_deps="zlib"
2514 flv_decoder_select="h263_decoder"
2515 flv_encoder_select="h263_encoder"
2516 fourxm_decoder_select="blockdsp bswapdsp"
2517 fraps_decoder_select="bswapdsp huffman"
2518 g2m_decoder_deps="zlib"
2519 g2m_decoder_select="blockdsp idctdsp jpegtables"
2520 g729_decoder_select="audiodsp"
2521 h261_decoder_select="mpegvideo"
2522 h261_encoder_select="aandcttables mpegvideoenc"
2523 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2524 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2525 h263i_decoder_select="h263_decoder"
2526 h263p_decoder_select="h263_decoder"
2527 h263p_encoder_select="h263_encoder"
2528 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2529 h264_decoder_suggest="error_resilience"
2530 hap_decoder_select="snappy texturedsp"
2531 hap_encoder_deps="libsnappy"
2532 hap_encoder_select="texturedspenc"
2533 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2534 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2535 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2536 iac_decoder_select="imc_decoder"
2537 imc_decoder_select="bswapdsp fft mdct sinewin"
2538 indeo3_decoder_select="hpeldsp"
2539 indeo4_decoder_select="ividsp"
2540 indeo5_decoder_select="ividsp"
2541 interplay_video_decoder_select="hpeldsp"
2542 jpegls_decoder_select="mjpeg_decoder"
2543 jv_decoder_select="blockdsp"
2544 lagarith_decoder_select="llviddsp"
2545 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2546 magicyuv_decoder_select="llviddsp"
2547 magicyuv_encoder_select="llvidencdsp"
2548 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2549 metasound_decoder_select="lsp mdct sinewin"
2550 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2551 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2552 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2553 mjpegb_decoder_select="mjpeg_decoder"
2554 mlp_decoder_select="mlp_parser"
2555 mlp_encoder_select="lpc"
2556 motionpixels_decoder_select="bswapdsp"
2557 mp1_decoder_select="mpegaudio"
2558 mp1float_decoder_select="mpegaudio"
2559 mp2_decoder_select="mpegaudio"
2560 mp2float_decoder_select="mpegaudio"
2561 mp3_decoder_select="mpegaudio"
2562 mp3adu_decoder_select="mpegaudio"
2563 mp3adufloat_decoder_select="mpegaudio"
2564 mp3float_decoder_select="mpegaudio"
2565 mp3on4_decoder_select="mpegaudio"
2566 mp3on4float_decoder_select="mpegaudio"
2567 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2568 mpc8_decoder_select="mpegaudiodsp"
2569 mpegvideo_decoder_select="mpegvideo"
2570 mpeg1video_decoder_select="mpegvideo"
2571 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2572 mpeg2video_decoder_select="mpegvideo"
2573 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2574 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2575 mpeg4_encoder_select="h263_encoder"
2576 msa1_decoder_select="mss34dsp"
2577 mscc_decoder_deps="zlib"
2578 msmpeg4v1_decoder_select="h263_decoder"
2579 msmpeg4v2_decoder_select="h263_decoder"
2580 msmpeg4v2_encoder_select="h263_encoder"
2581 msmpeg4v3_decoder_select="h263_decoder"
2582 msmpeg4v3_encoder_select="h263_encoder"
2583 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2584 mts2_decoder_select="mss34dsp"
2585 mxpeg_decoder_select="mjpeg_decoder"
2586 nellymoser_decoder_select="mdct sinewin"
2587 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2588 nuv_decoder_select="idctdsp lzo"
2589 on2avc_decoder_select="mdct"
2590 opus_decoder_deps="swresample"
2591 opus_decoder_select="mdct15"
2592 opus_encoder_select="audio_frame_queue mdct15"
2593 png_decoder_deps="zlib"
2594 png_encoder_deps="zlib"
2595 png_encoder_select="llvidencdsp"
2596 prores_decoder_select="blockdsp idctdsp"
2597 prores_encoder_select="fdctdsp"
2598 qcelp_decoder_select="lsp"
2599 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2600 ra_144_decoder_select="audiodsp"
2601 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2602 ralf_decoder_select="golomb"
2603 rawvideo_decoder_select="bswapdsp"
2604 rscc_decoder_deps="zlib"
2605 rtjpeg_decoder_select="me_cmp"
2606 rv10_decoder_select="h263_decoder"
2607 rv10_encoder_select="h263_encoder"
2608 rv20_decoder_select="h263_decoder"
2609 rv20_encoder_select="h263_encoder"
2610 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2611 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2612 screenpresso_decoder_deps="zlib"
2613 shorten_decoder_select="bswapdsp"
2614 sipr_decoder_select="lsp"
2615 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2616 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2617 sonic_decoder_select="golomb rangecoder"
2618 sonic_encoder_select="golomb rangecoder"
2619 sonic_ls_encoder_select="golomb rangecoder"
2620 sp5x_decoder_select="mjpeg_decoder"
2621 srgc_decoder_deps="zlib"
2622 svq1_decoder_select="hpeldsp"
2623 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2624 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2625 svq3_decoder_suggest="zlib"
2626 tak_decoder_select="audiodsp"
2627 tdsc_decoder_deps="zlib"
2628 tdsc_decoder_select="mjpeg_decoder"
2629 theora_decoder_select="vp3_decoder"
2630 thp_decoder_select="mjpeg_decoder"
2631 tiff_decoder_suggest="zlib lzma"
2632 tiff_encoder_suggest="zlib"
2633 truehd_decoder_select="mlp_parser"
2634 truehd_encoder_select="lpc"
2635 truemotion2_decoder_select="bswapdsp"
2636 truespeech_decoder_select="bswapdsp"
2637 tscc_decoder_deps="zlib"
2638 twinvq_decoder_select="mdct lsp sinewin"
2639 txd_decoder_select="texturedsp"
2640 utvideo_decoder_select="bswapdsp llviddsp"
2641 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2642 vble_decoder_select="llviddsp"
2643 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2644 vc1image_decoder_select="vc1_decoder"
2645 vorbis_decoder_select="mdct"
2646 vorbis_encoder_select="audio_frame_queue mdct"
2647 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2648 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2649 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2650 vp6a_decoder_select="vp6_decoder"
2651 vp6f_decoder_select="vp6_decoder"
2652 vp7_decoder_select="h264pred videodsp vp8dsp"
2653 vp8_decoder_select="h264pred videodsp vp8dsp"
2654 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2655 webp_decoder_select="vp8_decoder exif"
2656 wmalossless_decoder_select="llauddsp"
2657 wmapro_decoder_select="mdct sinewin wma_freqs"
2658 wmav1_decoder_select="mdct sinewin wma_freqs"
2659 wmav1_encoder_select="mdct sinewin wma_freqs"
2660 wmav2_decoder_select="mdct sinewin wma_freqs"
2661 wmav2_encoder_select="mdct sinewin wma_freqs"
2662 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2663 wmv1_decoder_select="h263_decoder"
2664 wmv1_encoder_select="h263_encoder"
2665 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2666 wmv2_encoder_select="h263_encoder wmv2dsp"
2667 wmv3_decoder_select="vc1_decoder"
2668 wmv3image_decoder_select="wmv3_decoder"
2669 xma1_decoder_select="wmapro_decoder"
2670 xma2_decoder_select="wmapro_decoder"
2671 zerocodec_decoder_deps="zlib"
2672 zlib_decoder_deps="zlib"
2673 zlib_encoder_deps="zlib"
2674 zmbv_decoder_deps="zlib"
2675 zmbv_encoder_deps="zlib"
2676
2677 # hardware accelerators
2678 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2679 cuda_deps="ffnvcodec"
2680 cuvid_deps="ffnvcodec"
2681 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2682 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2683 ffnvcodec_deps_any="libdl LoadLibrary"
2684 nvdec_deps="ffnvcodec"
2685 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2686 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2687 xvmc_deps="X11_extensions_XvMClib_h"
2688
2689 h263_vaapi_hwaccel_deps="vaapi"
2690 h263_vaapi_hwaccel_select="h263_decoder"
2691 h263_videotoolbox_hwaccel_deps="videotoolbox"
2692 h263_videotoolbox_hwaccel_select="h263_decoder"
2693 h264_d3d11va_hwaccel_deps="d3d11va"
2694 h264_d3d11va_hwaccel_select="h264_decoder"
2695 h264_d3d11va2_hwaccel_deps="d3d11va"
2696 h264_d3d11va2_hwaccel_select="h264_decoder"
2697 h264_dxva2_hwaccel_deps="dxva2"
2698 h264_dxva2_hwaccel_select="h264_decoder"
2699 h264_nvdec_hwaccel_deps="nvdec"
2700 h264_nvdec_hwaccel_select="h264_decoder"
2701 h264_vaapi_hwaccel_deps="vaapi"
2702 h264_vaapi_hwaccel_select="h264_decoder"
2703 h264_vdpau_hwaccel_deps="vdpau"
2704 h264_vdpau_hwaccel_select="h264_decoder"
2705 h264_videotoolbox_hwaccel_deps="videotoolbox"
2706 h264_videotoolbox_hwaccel_select="h264_decoder"
2707 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2708 hevc_d3d11va_hwaccel_select="hevc_decoder"
2709 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2710 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2711 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2712 hevc_dxva2_hwaccel_select="hevc_decoder"
2713 hevc_nvdec_hwaccel_deps="nvdec"
2714 hevc_nvdec_hwaccel_select="hevc_decoder"
2715 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2716 hevc_vaapi_hwaccel_select="hevc_decoder"
2717 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2718 hevc_vdpau_hwaccel_select="hevc_decoder"
2719 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2720 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2721 mjpeg_nvdec_hwaccel_deps="nvdec"
2722 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2723 mjpeg_vaapi_hwaccel_deps="vaapi"
2724 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2725 mpeg_xvmc_hwaccel_deps="xvmc"
2726 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2727 mpeg1_nvdec_hwaccel_deps="nvdec"
2728 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2729 mpeg1_vdpau_hwaccel_deps="vdpau"
2730 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2731 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2733 mpeg1_xvmc_hwaccel_deps="xvmc"
2734 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2735 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2736 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2738 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2739 mpeg2_dxva2_hwaccel_deps="dxva2"
2740 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2741 mpeg2_nvdec_hwaccel_deps="nvdec"
2742 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2743 mpeg2_vaapi_hwaccel_deps="vaapi"
2744 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2745 mpeg2_vdpau_hwaccel_deps="vdpau"
2746 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2747 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2748 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2749 mpeg2_xvmc_hwaccel_deps="xvmc"
2750 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2751 mpeg4_nvdec_hwaccel_deps="nvdec"
2752 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2753 mpeg4_vaapi_hwaccel_deps="vaapi"
2754 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2755 mpeg4_vdpau_hwaccel_deps="vdpau"
2756 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2757 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2758 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2759 vc1_d3d11va_hwaccel_deps="d3d11va"
2760 vc1_d3d11va_hwaccel_select="vc1_decoder"
2761 vc1_d3d11va2_hwaccel_deps="d3d11va"
2762 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2763 vc1_dxva2_hwaccel_deps="dxva2"
2764 vc1_dxva2_hwaccel_select="vc1_decoder"
2765 vc1_nvdec_hwaccel_deps="nvdec"
2766 vc1_nvdec_hwaccel_select="vc1_decoder"
2767 vc1_vaapi_hwaccel_deps="vaapi"
2768 vc1_vaapi_hwaccel_select="vc1_decoder"
2769 vc1_vdpau_hwaccel_deps="vdpau"
2770 vc1_vdpau_hwaccel_select="vc1_decoder"
2771 vp8_nvdec_hwaccel_deps="nvdec"
2772 vp8_nvdec_hwaccel_select="vp8_decoder"
2773 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2774 vp8_vaapi_hwaccel_select="vp8_decoder"
2775 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2776 vp9_d3d11va_hwaccel_select="vp9_decoder"
2777 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2778 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2779 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2780 vp9_dxva2_hwaccel_select="vp9_decoder"
2781 vp9_nvdec_hwaccel_deps="nvdec"
2782 vp9_nvdec_hwaccel_select="vp9_decoder"
2783 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2784 vp9_vaapi_hwaccel_select="vp9_decoder"
2785 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2786 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2787 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2788 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2789 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2790 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2791
2792 # hardware-accelerated codecs
2793 omx_deps="libdl pthreads"
2794 omx_rpi_select="omx"
2795 qsv_deps="libmfx"
2796 qsvdec_select="qsv"
2797 qsvenc_select="qsv"
2798 qsvvpp_select="qsv"
2799 vaapi_encode_deps="vaapi"
2800 v4l2_m2m_deps_any="linux_videodev2_h"
2801
2802 hwupload_cuda_filter_deps="ffnvcodec"
2803 scale_npp_filter_deps="ffnvcodec libnpp"
2804 scale_cuda_filter_deps="cuda_sdk"
2805 thumbnail_cuda_filter_deps="cuda_sdk"
2806
2807 amf_deps_any="libdl LoadLibrary"
2808 nvenc_deps="ffnvcodec"
2809 nvenc_deps_any="libdl LoadLibrary"
2810 nvenc_encoder_deps="nvenc"
2811
2812 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2813 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2814 h264_amf_encoder_deps="amf"
2815 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2816 h264_cuvid_decoder_deps="cuvid"
2817 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2818 h264_mediacodec_decoder_deps="mediacodec"
2819 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2820 h264_mmal_decoder_deps="mmal"
2821 h264_nvenc_encoder_deps="nvenc"
2822 h264_omx_encoder_deps="omx"
2823 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2824 h264_qsv_encoder_select="qsvenc"
2825 h264_rkmpp_decoder_deps="rkmpp"
2826 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2827 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2828 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2829 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2830 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2831 hevc_amf_encoder_deps="amf"
2832 hevc_cuvid_decoder_deps="cuvid"
2833 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2834 hevc_mediacodec_decoder_deps="mediacodec"
2835 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2836 hevc_nvenc_encoder_deps="nvenc"
2837 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2838 hevc_qsv_encoder_select="hevcparse qsvenc"
2839 hevc_rkmpp_decoder_deps="rkmpp"
2840 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2841 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2842 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2843 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2844 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2845 mjpeg_cuvid_decoder_deps="cuvid"
2846 mjpeg_qsv_encoder_deps="libmfx"
2847 mjpeg_qsv_encoder_select="qsvenc"
2848 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2849 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2850 mpeg1_cuvid_decoder_deps="cuvid"
2851 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2852 mpeg2_crystalhd_decoder_select="crystalhd"
2853 mpeg2_cuvid_decoder_deps="cuvid"
2854 mpeg2_mmal_decoder_deps="mmal"
2855 mpeg2_mediacodec_decoder_deps="mediacodec"
2856 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2857 mpeg2_qsv_encoder_select="qsvenc"
2858 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2859 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2860 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2861 mpeg4_crystalhd_decoder_select="crystalhd"
2862 mpeg4_cuvid_decoder_deps="cuvid"
2863 mpeg4_mediacodec_decoder_deps="mediacodec"
2864 mpeg4_mmal_decoder_deps="mmal"
2865 mpeg4_omx_encoder_deps="omx"
2866 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2867 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2868 msmpeg4_crystalhd_decoder_select="crystalhd"
2869 nvenc_h264_encoder_select="h264_nvenc_encoder"
2870 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2871 vc1_crystalhd_decoder_select="crystalhd"
2872 vc1_cuvid_decoder_deps="cuvid"
2873 vc1_mmal_decoder_deps="mmal"
2874 vc1_qsv_decoder_select="qsvdec vc1_parser"
2875 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2876 vp8_cuvid_decoder_deps="cuvid"
2877 vp8_mediacodec_decoder_deps="mediacodec"
2878 vp8_qsv_decoder_select="qsvdec vp8_parser"
2879 vp8_rkmpp_decoder_deps="rkmpp"
2880 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2881 vp8_vaapi_encoder_select="vaapi_encode"
2882 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2883 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2884 vp9_cuvid_decoder_deps="cuvid"
2885 vp9_mediacodec_decoder_deps="mediacodec"
2886 vp9_rkmpp_decoder_deps="rkmpp"
2887 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2888 vp9_vaapi_encoder_select="vaapi_encode"
2889 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2890 wmv3_crystalhd_decoder_select="crystalhd"
2891
2892 # parsers
2893 aac_parser_select="adts_header"
2894 h264_parser_select="golomb h264dsp h264parse"
2895 hevc_parser_select="hevcparse"
2896 mpegaudio_parser_select="mpegaudioheader"
2897 mpegvideo_parser_select="mpegvideo"
2898 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2899 vc1_parser_select="vc1dsp"
2900
2901 # bitstream_filters
2902 aac_adtstoasc_bsf_select="adts_header"
2903 h264_metadata_bsf_select="cbs_h264"
2904 h264_redundant_pps_bsf_select="cbs_h264"
2905 hevc_metadata_bsf_select="cbs_h265"
2906 mjpeg2jpeg_bsf_select="jpegtables"
2907 mpeg2_metadata_bsf_select="cbs_mpeg2"
2908 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2909
2910 # external libraries
2911 aac_at_decoder_deps="audiotoolbox"
2912 aac_at_decoder_select="aac_adtstoasc_bsf"
2913 ac3_at_decoder_deps="audiotoolbox"
2914 ac3_at_decoder_select="ac3_parser"
2915 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2916 alac_at_decoder_deps="audiotoolbox"
2917 amr_nb_at_decoder_deps="audiotoolbox"
2918 avisynth_deps_any="libdl LoadLibrary"
2919 avisynth_demuxer_deps="avisynth"
2920 avisynth_demuxer_select="riffdec"
2921 eac3_at_decoder_deps="audiotoolbox"
2922 eac3_at_decoder_select="ac3_parser"
2923 gsm_ms_at_decoder_deps="audiotoolbox"
2924 ilbc_at_decoder_deps="audiotoolbox"
2925 mp1_at_decoder_deps="audiotoolbox"
2926 mp2_at_decoder_deps="audiotoolbox"
2927 mp3_at_decoder_deps="audiotoolbox"
2928 mp1_at_decoder_select="mpegaudioheader"
2929 mp2_at_decoder_select="mpegaudioheader"
2930 mp3_at_decoder_select="mpegaudioheader"
2931 pcm_alaw_at_decoder_deps="audiotoolbox"
2932 pcm_mulaw_at_decoder_deps="audiotoolbox"
2933 qdmc_at_decoder_deps="audiotoolbox"
2934 qdm2_at_decoder_deps="audiotoolbox"
2935 aac_at_encoder_deps="audiotoolbox"
2936 aac_at_encoder_select="audio_frame_queue"
2937 alac_at_encoder_deps="audiotoolbox"
2938 alac_at_encoder_select="audio_frame_queue"
2939 ilbc_at_encoder_deps="audiotoolbox"
2940 ilbc_at_encoder_select="audio_frame_queue"
2941 pcm_alaw_at_encoder_deps="audiotoolbox"
2942 pcm_alaw_at_encoder_select="audio_frame_queue"
2943 pcm_mulaw_at_encoder_deps="audiotoolbox"
2944 pcm_mulaw_at_encoder_select="audio_frame_queue"
2945 chromaprint_muxer_deps="chromaprint"
2946 h264_videotoolbox_encoder_deps="pthreads"
2947 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2948 hevc_videotoolbox_encoder_deps="pthreads"
2949 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2950 libcelt_decoder_deps="libcelt"
2951 libcodec2_decoder_deps="libcodec2"
2952 libcodec2_encoder_deps="libcodec2"
2953 libfdk_aac_decoder_deps="libfdk_aac"
2954 libfdk_aac_encoder_deps="libfdk_aac"
2955 libfdk_aac_encoder_select="audio_frame_queue"
2956 libgme_demuxer_deps="libgme"
2957 libgsm_decoder_deps="libgsm"
2958 libgsm_encoder_deps="libgsm"
2959 libgsm_ms_decoder_deps="libgsm"
2960 libgsm_ms_encoder_deps="libgsm"
2961 libilbc_decoder_deps="libilbc"
2962 libilbc_encoder_deps="libilbc"
2963 libkvazaar_encoder_deps="libkvazaar"
2964 libmodplug_demuxer_deps="libmodplug"
2965 libmp3lame_encoder_deps="libmp3lame"
2966 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2967 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2968 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2969 libopencore_amrnb_encoder_select="audio_frame_queue"
2970 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2971 libopenh264_decoder_deps="libopenh264"
2972 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2973 libopenh264_encoder_deps="libopenh264"
2974 libopenjpeg_decoder_deps="libopenjpeg"
2975 libopenjpeg_encoder_deps="libopenjpeg"
2976 libopenmpt_demuxer_deps="libopenmpt"
2977 libopus_decoder_deps="libopus"
2978 libopus_encoder_deps="libopus"
2979 libopus_encoder_select="audio_frame_queue"
2980 librsvg_decoder_deps="librsvg"
2981 libshine_encoder_deps="libshine"
2982 libshine_encoder_select="audio_frame_queue"
2983 libspeex_decoder_deps="libspeex"
2984 libspeex_encoder_deps="libspeex"
2985 libspeex_encoder_select="audio_frame_queue"
2986 libtheora_encoder_deps="libtheora"
2987 libtwolame_encoder_deps="libtwolame"
2988 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2989 libvorbis_decoder_deps="libvorbis"
2990 libvorbis_encoder_deps="libvorbis libvorbisenc"
2991 libvorbis_encoder_select="audio_frame_queue"
2992 libvpx_vp8_decoder_deps="libvpx"
2993 libvpx_vp8_encoder_deps="libvpx"
2994 libvpx_vp9_decoder_deps="libvpx"
2995 libvpx_vp9_encoder_deps="libvpx"
2996 libwavpack_encoder_deps="libwavpack"
2997 libwavpack_encoder_select="audio_frame_queue"
2998 libwebp_encoder_deps="libwebp"
2999 libwebp_anim_encoder_deps="libwebp"
3000 libx262_encoder_deps="libx262"
3001 libx264_encoder_deps="libx264"
3002 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3003 libx264rgb_encoder_select="libx264_encoder"
3004 libx265_encoder_deps="libx265"
3005 libxavs_encoder_deps="libxavs"
3006 libxvid_encoder_deps="libxvid"
3007 libzvbi_teletext_decoder_deps="libzvbi"
3008 videotoolbox_suggest="coreservices"
3009 videotoolbox_deps="corefoundation coremedia corevideo"
3010 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3011
3012 # demuxers / muxers
3013 ac3_demuxer_select="ac3_parser"
3014 aiff_muxer_select="iso_media"
3015 asf_demuxer_select="riffdec"
3016 asf_o_demuxer_select="riffdec"
3017 asf_muxer_select="riffenc"
3018 asf_stream_muxer_select="asf_muxer"
3019 avi_demuxer_select="iso_media riffdec exif"
3020 avi_muxer_select="riffenc"
3021 caf_demuxer_select="iso_media riffdec"
3022 caf_muxer_select="iso_media"
3023 dash_muxer_select="mp4_muxer"
3024 dash_demuxer_deps="libxml2"
3025 dirac_demuxer_select="dirac_parser"
3026 dts_demuxer_select="dca_parser"
3027 dtshd_demuxer_select="dca_parser"
3028 dv_demuxer_select="dvprofile"
3029 dv_muxer_select="dvprofile"
3030 dxa_demuxer_select="riffdec"
3031 eac3_demuxer_select="ac3_parser"
3032 f4v_muxer_select="mov_muxer"
3033 fifo_muxer_deps="threads"
3034 flac_demuxer_select="flac_parser"
3035 hds_muxer_select="flv_muxer"
3036 hls_muxer_select="mpegts_muxer"
3037 hls_muxer_suggest="gcrypt openssl"
3038 image2_alias_pix_demuxer_select="image2_demuxer"
3039 image2_brender_pix_demuxer_select="image2_demuxer"
3040 ipod_muxer_select="mov_muxer"
3041 ismv_muxer_select="mov_muxer"
3042 matroska_audio_muxer_select="matroska_muxer"
3043 matroska_demuxer_select="iso_media riffdec"
3044 matroska_demuxer_suggest="bzlib lzo zlib"
3045 matroska_muxer_select="iso_media riffenc"
3046 mmf_muxer_select="riffenc"
3047 mov_demuxer_select="iso_media riffdec"
3048 mov_demuxer_suggest="zlib"
3049 mov_muxer_select="iso_media riffenc rtpenc_chain"
3050 mp3_demuxer_select="mpegaudio_parser"
3051 mp3_muxer_select="mpegaudioheader"
3052 mp4_muxer_select="mov_muxer"
3053 mpegts_demuxer_select="iso_media"
3054 mpegts_muxer_select="adts_muxer latm_muxer"
3055 mpegtsraw_demuxer_select="mpegts_demuxer"
3056 mxf_d10_muxer_select="mxf_muxer"
3057 mxf_opatom_muxer_select="mxf_muxer"
3058 nut_muxer_select="riffenc"
3059 nuv_demuxer_select="riffdec"
3060 oga_muxer_select="ogg_muxer"
3061 ogg_demuxer_select="dirac_parse"
3062 ogv_muxer_select="ogg_muxer"
3063 opus_muxer_select="ogg_muxer"
3064 psp_muxer_select="mov_muxer"
3065 rtp_demuxer_select="sdp_demuxer"
3066 rtp_muxer_select="golomb"
3067 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3068 rtsp_demuxer_select="http_protocol rtpdec"
3069 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3070 sap_demuxer_select="sdp_demuxer"
3071 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3072 sdp_demuxer_select="rtpdec"
3073 smoothstreaming_muxer_select="ismv_muxer"
3074 spdif_demuxer_select="adts_header"
3075 spdif_muxer_select="adts_header"
3076 spx_muxer_select="ogg_muxer"
3077 swf_demuxer_suggest="zlib"
3078 tak_demuxer_select="tak_parser"
3079 tg2_muxer_select="mov_muxer"
3080 tgp_muxer_select="mov_muxer"
3081 vobsub_demuxer_select="mpegps_demuxer"
3082 w64_demuxer_select="wav_demuxer"
3083 w64_muxer_select="wav_muxer"
3084 wav_demuxer_select="riffdec"
3085 wav_muxer_select="riffenc"
3086 webm_muxer_select="iso_media riffenc"
3087 webm_dash_manifest_demuxer_select="matroska_demuxer"
3088 wtv_demuxer_select="mpegts_demuxer riffdec"
3089 wtv_muxer_select="mpegts_muxer riffenc"
3090 xmv_demuxer_select="riffdec"
3091 xwma_demuxer_select="riffdec"
3092
3093 # indevs / outdevs
3094 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3095 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3096 alsa_indev_deps="alsa"
3097 alsa_outdev_deps="alsa"
3098 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3099 avfoundation_indev_suggest="coregraphics applicationservices"
3100 avfoundation_indev_extralibs="-framework Foundation"
3101 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3102 caca_outdev_deps="libcaca"
3103 decklink_deps_any="libdl LoadLibrary"
3104 decklink_indev_deps="decklink threads"
3105 decklink_indev_extralibs="-lstdc++"
3106 decklink_outdev_deps="decklink threads"
3107 decklink_outdev_extralibs="-lstdc++"
3108 libndi_newtek_indev_deps="libndi_newtek"
3109 libndi_newtek_indev_extralibs="-lndi"
3110 libndi_newtek_outdev_deps="libndi_newtek"
3111 libndi_newtek_outdev_extralibs="-lndi"
3112 dshow_indev_deps="IBaseFilter"
3113 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3114 fbdev_indev_deps="linux_fb_h"
3115 fbdev_outdev_deps="linux_fb_h"
3116 gdigrab_indev_deps="CreateDIBSection"
3117 gdigrab_indev_extralibs="-lgdi32"
3118 gdigrab_indev_select="bmp_decoder"
3119 iec61883_indev_deps="libiec61883"
3120 jack_indev_deps="libjack"
3121 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3122 kmsgrab_indev_deps="libdrm"
3123 lavfi_indev_deps="avfilter"
3124 libcdio_indev_deps="libcdio"
3125 libdc1394_indev_deps="libdc1394"
3126 openal_indev_deps="openal"
3127 opengl_outdev_deps="opengl"
3128 oss_indev_deps_any="sys_soundcard_h"
3129 oss_outdev_deps_any="sys_soundcard_h"
3130 pulse_indev_deps="libpulse"
3131 pulse_outdev_deps="libpulse"
3132 sdl2_outdev_deps="sdl2"
3133 sndio_indev_deps="sndio"
3134 sndio_outdev_deps="sndio"
3135 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3136 v4l2_indev_suggest="libv4l2"
3137 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3138 v4l2_outdev_suggest="libv4l2"
3139 vfwcap_indev_deps="vfw32 vfwcap_defines"
3140 xcbgrab_indev_deps="libxcb"
3141 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3142 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3143 xv_outdev_extralibs="-lXv -lX11 -lXext"
3144
3145 # protocols
3146 async_protocol_deps="threads"
3147 bluray_protocol_deps="libbluray"
3148 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3149 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3150 ffrtmpcrypt_protocol_select="tcp_protocol"
3151 ffrtmphttp_protocol_conflict="librtmp_protocol"
3152 ffrtmphttp_protocol_select="http_protocol"
3153 ftp_protocol_select="tcp_protocol"
3154 gopher_protocol_select="network"
3155 http_protocol_select="tcp_protocol"
3156 http_protocol_suggest="zlib"
3157 httpproxy_protocol_select="tcp_protocol"
3158 httpproxy_protocol_suggest="zlib"
3159 https_protocol_select="tls_protocol"
3160 https_protocol_suggest="zlib"
3161 icecast_protocol_select="http_protocol"
3162 librtmp_protocol_deps="librtmp"
3163 librtmpe_protocol_deps="librtmp"
3164 librtmps_protocol_deps="librtmp"
3165 librtmpt_protocol_deps="librtmp"
3166 librtmpte_protocol_deps="librtmp"
3167 libsmbclient_protocol_deps="libsmbclient gplv3"
3168 libssh_protocol_deps="libssh"
3169 libtls_conflict="openssl gnutls"
3170 mmsh_protocol_select="http_protocol"
3171 mmst_protocol_select="network"
3172 rtmp_protocol_conflict="librtmp_protocol"
3173 rtmp_protocol_select="tcp_protocol"
3174 rtmp_protocol_suggest="zlib"
3175 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3176 rtmpe_protocol_suggest="zlib"
3177 rtmps_protocol_conflict="librtmp_protocol"
3178 rtmps_protocol_select="tls_protocol"
3179 rtmps_protocol_suggest="zlib"
3180 rtmpt_protocol_select="ffrtmphttp_protocol"
3181 rtmpt_protocol_suggest="zlib"
3182 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3183 rtmpte_protocol_suggest="zlib"
3184 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3185 rtmpts_protocol_suggest="zlib"
3186 rtp_protocol_select="udp_protocol"
3187 schannel_conflict="openssl gnutls libtls"
3188 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3189 sctp_protocol_select="network"
3190 securetransport_conflict="openssl gnutls libtls"
3191 srtp_protocol_select="rtp_protocol srtp"
3192 tcp_protocol_select="network"
3193 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3194 tls_protocol_select="tcp_protocol"
3195 udp_protocol_select="network"
3196 udplite_protocol_select="network"
3197 unix_protocol_deps="sys_un_h"
3198 unix_protocol_select="network"
3199
3200 # filters
3201 afftfilt_filter_deps="avcodec"
3202 afftfilt_filter_select="fft"
3203 afir_filter_deps="avcodec"
3204 afir_filter_select="fft"
3205 amovie_filter_deps="avcodec avformat"
3206 aresample_filter_deps="swresample"
3207 ass_filter_deps="libass"
3208 atempo_filter_deps="avcodec"
3209 atempo_filter_select="rdft"
3210 azmq_filter_deps="libzmq"
3211 blackframe_filter_deps="gpl"
3212 boxblur_filter_deps="gpl"
3213 bs2b_filter_deps="libbs2b"
3214 colormatrix_filter_deps="gpl"
3215 convolve_filter_deps="avcodec"
3216 convolve_filter_select="fft"
3217 coreimage_filter_deps="coreimage appkit"
3218 coreimage_filter_extralibs="-framework OpenGL"
3219 coreimagesrc_filter_deps="coreimage appkit"
3220 coreimagesrc_filter_extralibs="-framework OpenGL"
3221 cover_rect_filter_deps="avcodec avformat gpl"
3222 cropdetect_filter_deps="gpl"
3223 deconvolve_filter_deps="avcodec"
3224 deconvolve_filter_select="fft"
3225 deinterlace_qsv_filter_deps="libmfx"
3226 deinterlace_vaapi_filter_deps="vaapi"
3227 delogo_filter_deps="gpl"
3228 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3229 deshake_filter_select="pixelutils"
3230 drawtext_filter_deps="libfreetype"
3231 drawtext_filter_suggest="libfontconfig libfribidi"
3232 elbg_filter_deps="avcodec"
3233 eq_filter_deps="gpl"
3234 fftfilt_filter_deps="avcodec"
3235 fftfilt_filter_select="rdft"
3236 find_rect_filter_deps="avcodec avformat gpl"
3237 firequalizer_filter_deps="avcodec"
3238 firequalizer_filter_select="rdft"
3239 flite_filter_deps="libflite"
3240 framerate_filter_select="pixelutils"
3241 frei0r_filter_deps="frei0r libdl"
3242 frei0r_src_filter_deps="frei0r libdl"
3243 fspp_filter_deps="gpl"
3244 geq_filter_deps="gpl"
3245 histeq_filter_deps="gpl"
3246 hqdn3d_filter_deps="gpl"
3247 interlace_filter_deps="gpl"
3248 kerndeint_filter_deps="gpl"
3249 ladspa_filter_deps="ladspa libdl"
3250 lv2_filter_deps="lv2"
3251 mcdeint_filter_deps="avcodec gpl"
3252 movie_filter_deps="avcodec avformat"
3253 mpdecimate_filter_deps="gpl"
3254 mpdecimate_filter_select="pixelutils"
3255 mptestsrc_filter_deps="gpl"
3256 negate_filter_deps="lut_filter"
3257 nnedi_filter_deps="gpl"
3258 ocr_filter_deps="libtesseract"
3259 ocv_filter_deps="libopencv"
3260 openclsrc_filter_deps="opencl"
3261 overlay_opencl_filter_deps="opencl"
3262 overlay_qsv_filter_deps="libmfx"
3263 overlay_qsv_filter_select="qsvvpp"
3264 owdenoise_filter_deps="gpl"
3265 pan_filter_deps="swresample"
3266 perspective_filter_deps="gpl"
3267 phase_filter_deps="gpl"
3268 pp7_filter_deps="gpl"
3269 pp_filter_deps="gpl postproc"
3270 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3271 program_opencl_filter_deps="opencl"
3272 pullup_filter_deps="gpl"
3273 removelogo_filter_deps="avcodec avformat swscale"
3274 repeatfields_filter_deps="gpl"
3275 resample_filter_deps="avresample"
3276 rubberband_filter_deps="librubberband"
3277 sab_filter_deps="gpl swscale"
3278 scale2ref_filter_deps="swscale"
3279 scale_filter_deps="swscale"
3280 scale_qsv_filter_deps="libmfx"
3281 select_filter_select="pixelutils"
3282 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3283 showcqt_filter_deps="avcodec avformat swscale"
3284 showcqt_filter_suggest="libfontconfig libfreetype"
3285 showcqt_filter_select="fft"
3286 showfreqs_filter_deps="avcodec"
3287 showfreqs_filter_select="fft"
3288 showspectrum_filter_deps="avcodec"
3289 showspectrum_filter_select="fft"
3290 showspectrumpic_filter_deps="avcodec"
3291 showspectrumpic_filter_select="fft"
3292 signature_filter_deps="gpl avcodec avformat"
3293 smartblur_filter_deps="gpl swscale"
3294 sofalizer_filter_deps="libmysofa avcodec"
3295 sofalizer_filter_select="fft"
3296 spectrumsynth_filter_deps="avcodec"
3297 spectrumsynth_filter_select="fft"
3298 spp_filter_deps="gpl avcodec"
3299 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3300 stereo3d_filter_deps="gpl"
3301 subtitles_filter_deps="avformat avcodec libass"
3302 super2xsai_filter_deps="gpl"
3303 pixfmts_super2xsai_test_deps="super2xsai_filter"
3304 tinterlace_filter_deps="gpl"
3305 tinterlace_merge_test_deps="tinterlace_filter"
3306 tinterlace_pad_test_deps="tinterlace_filter"
3307 tonemap_filter_deps="const_nan"
3308 unsharp_opencl_filter_deps="opencl"
3309 uspp_filter_deps="gpl avcodec"
3310 vaguedenoiser_filter_deps="gpl"
3311 vidstabdetect_filter_deps="libvidstab"
3312 vidstabtransform_filter_deps="libvidstab"
3313 libvmaf_filter_deps="libvmaf pthreads"
3314 zmq_filter_deps="libzmq"
3315 zoompan_filter_deps="swscale"
3316 zscale_filter_deps="libzimg const_nan"
3317 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3318 vpp_qsv_filter_deps="libmfx"
3319 vpp_qsv_filter_select="qsvvpp"
3320
3321 # examples
3322 avio_dir_cmd_deps="avformat avutil"
3323 avio_reading_deps="avformat avcodec avutil"
3324 decode_audio_example_deps="avcodec avutil"
3325 decode_video_example_deps="avcodec avutil"
3326 demuxing_decoding_example_deps="avcodec avformat avutil"
3327 encode_audio_example_deps="avcodec avutil"
3328 encode_video_example_deps="avcodec avutil"
3329 extract_mvs_example_deps="avcodec avformat avutil"
3330 filter_audio_example_deps="avfilter avutil"
3331 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3332 filtering_video_example_deps="avfilter avcodec avformat avutil"
3333 http_multiclient_example_deps="avformat avutil fork"
3334 hw_decode_example_deps="avcodec avformat avutil"
3335 metadata_example_deps="avformat avutil"
3336 muxing_example_deps="avcodec avformat avutil swscale"
3337 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3338 remuxing_example_deps="avcodec avformat avutil"
3339 resampling_audio_example_deps="avutil swresample"
3340 scaling_video_example_deps="avutil swscale"
3341 transcode_aac_example_deps="avcodec avformat swresample"
3342 transcoding_example_deps="avfilter avcodec avformat avutil"
3343 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3344 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3345
3346 # EXTRALIBS_LIST
3347 cpu_init_extralibs="pthreads_extralibs"
3348 cws2fws_extralibs="zlib_extralibs"
3349
3350 # libraries, in linking order
3351 avcodec_deps="avutil"
3352 avcodec_suggest="libm"
3353 avcodec_select="null_bsf"
3354 avdevice_deps="avformat avcodec avutil"
3355 avdevice_suggest="libm"
3356 avfilter_deps="avutil"
3357 avfilter_suggest="libm"
3358 avformat_deps="avcodec avutil"
3359 avformat_suggest="libm network zlib"
3360 avresample_deps="avutil"
3361 avresample_suggest="libm"
3362 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3363 postproc_deps="avutil gpl"
3364 postproc_suggest="libm"
3365 swresample_deps="avutil"
3366 swresample_suggest="libm libsoxr"
3367 swscale_deps="avutil"
3368 swscale_suggest="libm"
3369
3370 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3371 avfilter_extralibs="pthreads_extralibs"
3372 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3373
3374 # programs
3375 ffmpeg_deps="avcodec avfilter avformat swresample"
3376 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3377                null_filter
3378                trim_filter"
3379 ffmpeg_suggest="ole32 psapi shell32"
3380 ffplay_deps="avcodec avformat swscale swresample sdl2"
3381 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3382 ffplay_suggest="shell32"
3383 ffprobe_deps="avcodec avformat"
3384 ffprobe_suggest="shell32"
3385
3386 # documentation
3387 podpages_deps="perl"
3388 manpages_deps="perl pod2man"
3389 htmlpages_deps="perl"
3390 htmlpages_deps_any="makeinfo_html texi2html"
3391 txtpages_deps="perl makeinfo"
3392 doc_deps_any="manpages htmlpages podpages txtpages"
3393
3394 # default parameters
3395
3396 logfile="ffbuild/config.log"
3397
3398 # installation paths
3399 prefix_default="/usr/local"
3400 bindir_default='${prefix}/bin'
3401 datadir_default='${prefix}/share/ffmpeg'
3402 docdir_default='${prefix}/share/doc/ffmpeg'
3403 incdir_default='${prefix}/include'
3404 libdir_default='${prefix}/lib'
3405 mandir_default='${prefix}/share/man'
3406
3407 # toolchain
3408 ar_default="ar"
3409 cc_default="gcc"
3410 cxx_default="g++"
3411 host_cc_default="gcc"
3412 doxygen_default="doxygen"
3413 install="install"
3414 ln_s_default="ln -s -f"
3415 nm_default="nm -g"
3416 pkg_config_default=pkg-config
3417 ranlib_default="ranlib"
3418 strip_default="strip"
3419 version_script='--version-script'
3420 objformat="elf32"
3421 x86asmexe_default="nasm"
3422 windres_default="windres"
3423 nvcc_default="nvcc"
3424 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3425 striptype="direct"
3426
3427 # OS
3428 target_os_default=$(tolower $(uname -s))
3429 host_os=$target_os_default
3430
3431 # machine
3432 if test "$target_os_default" = aix; then
3433     arch_default=$(uname -p)
3434     strip_default="strip -X32_64"
3435 else
3436     arch_default=$(uname -m)
3437 fi
3438 cpu="generic"
3439 intrinsics="none"
3440
3441 # configurable options
3442 enable $PROGRAM_LIST
3443 enable $DOCUMENT_LIST
3444 enable $EXAMPLE_LIST
3445 enable $(filter_out avresample $LIBRARY_LIST)
3446 enable stripping
3447
3448 enable asm
3449 enable debug
3450 enable doc
3451 enable faan faandct faanidct
3452 enable optimizations
3453 enable runtime_cpudetect
3454 enable safe_bitstream_reader
3455 enable static
3456 enable swscale_alpha
3457 enable valgrind_backtrace
3458
3459 sws_max_filter_size_default=256
3460 set_default sws_max_filter_size
3461
3462 # internal components are enabled by default
3463 enable $EXTRALIBS_LIST
3464
3465 # Avoid external, non-system, libraries getting enabled by dependency resolution
3466 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3467
3468 # build settings
3469 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3470 LIBPREF="lib"
3471 LIBSUF=".a"
3472 FULLNAME='$(NAME)$(BUILDSUF)'
3473 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3474 SLIBPREF="lib"
3475 SLIBSUF=".so"
3476 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3477 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3478 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3479 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3480 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3481 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3482 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3483
3484 asflags_filter=echo
3485 cflags_filter=echo
3486 ldflags_filter=echo
3487
3488 AS_C='-c'
3489 AS_O='-o $@'
3490 CC_C='-c'
3491 CC_E='-E -o $@'
3492 CC_O='-o $@'
3493 CXX_C='-c'
3494 CXX_O='-o $@'
3495 OBJCC_C='-c'
3496 OBJCC_E='-E -o $@'
3497 OBJCC_O='-o $@'
3498 X86ASM_O='-o $@'
3499 LD_O='-o $@'
3500 LD_LIB='-l%'
3501 LD_PATH='-L'
3502 HOSTCC_C='-c'
3503 HOSTCC_E='-E -o $@'
3504 HOSTCC_O='-o $@'
3505 HOSTLD_O='-o $@'
3506 NVCC_C='-c'
3507 NVCC_O='-o $@'
3508
3509 host_extralibs='-lm'
3510 host_cflags_filter=echo
3511 host_ldflags_filter=echo
3512
3513 target_path='$(CURDIR)'
3514
3515 # since the object filename is not given with the -MM flag, the compiler
3516 # is only able to print the basename, and we must add the path ourselves
3517 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3518 DEPFLAGS='-MM'
3519
3520 mkdir -p ffbuild
3521
3522 # find source path
3523 if test -f configure; then
3524     source_path=.
3525 else
3526     source_path=$(cd $(dirname "$0"); pwd)
3527     case "$source_path" in
3528         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3529     esac
3530     test -e "$source_path/config.h" &&
3531         die "Out of tree builds are impossible with config.h in source dir."
3532 fi
3533
3534 for v in "$@"; do
3535     r=${v#*=}
3536     l=${v%"$r"}
3537     r=$(sh_quote "$r")
3538     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3539 done
3540
3541 find_things(){
3542     thing=$1
3543     pattern=$2
3544     file=$source_path/$3
3545     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3546 }
3547
3548 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3549
3550 find_things_extern(){
3551     thing=$1
3552     pattern=$2
3553     file=$source_path/$3
3554     out=${4:-$thing}
3555     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3556 }
3557
3558 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3559 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3560 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3561 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3562 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3563 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3564 CODEC_LIST="
3565     $ENCODER_LIST
3566     $DECODER_LIST
3567 "
3568 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3569 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3570 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3571 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3572
3573 AVCODEC_COMPONENTS_LIST="
3574     $BSF_LIST
3575     $DECODER_LIST
3576     $ENCODER_LIST
3577     $HWACCEL_LIST
3578     $PARSER_LIST
3579 "
3580
3581 AVDEVICE_COMPONENTS_LIST="
3582     $INDEV_LIST
3583     $OUTDEV_LIST
3584 "
3585
3586 AVFILTER_COMPONENTS_LIST="
3587     $FILTER_LIST
3588 "
3589
3590 AVFORMAT_COMPONENTS_LIST="
3591     $DEMUXER_LIST
3592     $MUXER_LIST
3593     $PROTOCOL_LIST
3594 "
3595
3596 ALL_COMPONENTS="
3597     $AVCODEC_COMPONENTS_LIST
3598     $AVDEVICE_COMPONENTS_LIST
3599     $AVFILTER_COMPONENTS_LIST
3600     $AVFORMAT_COMPONENTS_LIST
3601 "
3602
3603 for n in $COMPONENT_LIST; do
3604     v=$(toupper ${n%s})_LIST
3605     eval enable \$$v
3606     eval ${n}_if_any="\$$v"
3607 done
3608
3609 enable $ARCH_EXT_LIST
3610
3611 die_unknown(){
3612     echo "Unknown option \"$1\"."
3613     echo "See $0 --help for available options."
3614     exit 1
3615 }
3616
3617 print_in_columns() {
3618     cols=$(expr $ncols / 24)
3619     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3620 }
3621
3622 show_list() {
3623     suffix=_$1
3624     shift
3625     echo $* | sed s/$suffix//g | print_in_columns
3626     exit 0
3627 }
3628
3629 rand_list(){
3630     IFS=', '
3631     set -- $*
3632     unset IFS
3633     for thing; do
3634         comp=${thing%:*}
3635         prob=${thing#$comp}
3636         prob=${prob#:}
3637         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3638         echo "prob ${prob:-0.5}"
3639         printf '%s\n' $comp
3640     done
3641 }
3642
3643 do_random(){
3644     action=$1
3645     shift
3646     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3647     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3648 }
3649
3650 for opt do
3651     optval="${opt#*=}"
3652     case "$opt" in
3653         --extra-ldflags=*)
3654             add_ldflags $optval
3655         ;;
3656         --extra-ldexeflags=*)
3657             add_ldexeflags $optval
3658         ;;
3659         --extra-ldsoflags=*)
3660             add_ldsoflags $optval
3661         ;;
3662         --extra-ldlibflags=*)
3663             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --extra-ldsoflags instead."
3665             add_ldsoflags $optval
3666         ;;
3667         --extra-libs=*)
3668             add_extralibs $optval
3669         ;;
3670         --disable-devices)
3671             disable $INDEV_LIST $OUTDEV_LIST
3672         ;;
3673         --enable-debug=*)
3674             debuglevel="$optval"
3675         ;;
3676         --disable-programs)
3677             disable $PROGRAM_LIST
3678         ;;
3679         --disable-everything)
3680             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3681         ;;
3682         --disable-all)
3683             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3684             disable $LIBRARY_LIST $PROGRAM_LIST doc
3685             enable avutil
3686         ;;
3687         --enable-random|--disable-random)
3688             action=${opt%%-random}
3689             do_random ${action#--} $COMPONENT_LIST
3690         ;;
3691         --enable-random=*|--disable-random=*)
3692             action=${opt%%-random=*}
3693             do_random ${action#--} $optval
3694         ;;
3695         --enable-sdl)
3696             enable sdl2
3697         ;;
3698         --enable-*=*|--disable-*=*)
3699             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3700             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3701             eval list=\$$(toupper $thing)_LIST
3702             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3703             list=$(filter "$name" $list)
3704             [ "$list" = "" ] && warn "Option $opt did not match anything"
3705             $action $list
3706         ;;
3707         --enable-yasm|--disable-yasm)
3708             warn "The ${opt} option is only provided for compatibility and will be\n"\
3709                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3710             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3711         ;;
3712         --yasmexe=*)
3713             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3714                  "removed in the future. Use --x86asmexe instead."
3715             x86asmexe="$optval"
3716         ;;
3717         --enable-?*|--disable-?*)
3718             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3719             if is_in $option $COMPONENT_LIST; then
3720                 test $action = disable && action=unset
3721                 eval $action \$$(toupper ${option%s})_LIST
3722             elif is_in $option $CMDLINE_SELECT; then
3723                 $action $option
3724             else
3725                 die_unknown $opt
3726             fi
3727         ;;
3728         --list-*)
3729             NAME="${opt#--list-}"
3730             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3731             NAME=${NAME%s}
3732             eval show_list $NAME \$$(toupper $NAME)_LIST
3733         ;;
3734         --help|-h) show_help
3735         ;;
3736         --quiet|-q) quiet=yes
3737         ;;
3738         --fatal-warnings) enable fatal_warnings
3739         ;;
3740         --libfuzzer=*)
3741             libfuzzer_path="$optval"
3742         ;;
3743         *)
3744             optname="${opt%%=*}"
3745             optname="${optname#--}"
3746             optname=$(echo "$optname" | sed 's/-/_/g')
3747             if is_in $optname $CMDLINE_SET; then
3748                 eval $optname='$optval'
3749             elif is_in $optname $CMDLINE_APPEND; then
3750                 append $optname "$optval"
3751             else
3752                 die_unknown $opt
3753             fi
3754         ;;
3755     esac
3756 done
3757
3758 for e in $env; do
3759     eval "export $e"
3760 done
3761
3762 if disabled autodetect; then
3763
3764     # Unless iconv is explicitely disabled by the user, we still want to probe
3765     # for the iconv from the libc.
3766     disabled iconv || enable libc_iconv
3767
3768     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3769     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3770 fi
3771 # Mark specifically enabled, but normally autodetected libraries as requested.
3772 for lib in $AUTODETECT_LIBS; do
3773     enabled $lib && request $lib
3774 done
3775 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3776 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3777 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3778
3779 disabled logging && logfile=/dev/null
3780
3781 # command line configuration sanity checks
3782
3783 # we need to build at least one lib type
3784 if ! enabled_any static shared; then
3785     cat <<EOF
3786 At least one library type must be built.
3787 Specify --enable-static to build the static libraries or --enable-shared to
3788 build the shared libraries as well. To only build the shared libraries specify
3789 --disable-static in addition to --enable-shared.
3790 EOF
3791     exit 1
3792 fi
3793
3794 die_license_disabled() {
3795     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3796 }
3797
3798 die_license_disabled_gpl() {
3799     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3800 }
3801
3802 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3803 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3804
3805 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3806 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3807
3808 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3809
3810 if enabled nonfree; then
3811     license="nonfree and unredistributable"
3812 elif enabled gplv3; then
3813     license="GPL version 3 or later"
3814 elif enabled lgplv3; then
3815     license="LGPL version 3 or later"
3816 elif enabled gpl; then
3817     license="GPL version 2 or later"
3818 else
3819     license="LGPL version 2.1 or later"
3820 fi
3821
3822 enabled_all gnutls openssl &&
3823     die "GnuTLS and OpenSSL must not be enabled at the same time."
3824
3825 # Disable all the library-specific components if the library itself
3826 # is disabled, see AVCODEC_LIST and following _LIST variables.
3827
3828 disable_components(){
3829     disabled ${1} && disable $(
3830         eval components="\$$(toupper ${1})_COMPONENTS"
3831         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3832     )
3833 }
3834
3835 map 'disable_components $v' $LIBRARY_LIST
3836
3837 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3838 set >> $logfile
3839
3840 test -n "$valgrind" && toolchain="valgrind-memcheck"
3841
3842 enabled ossfuzz && {
3843     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3844     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3845 }
3846
3847 case "$toolchain" in
3848     *-asan)
3849         cc_default="${toolchain%-asan}"
3850         add_cflags  -fsanitize=address
3851         add_ldflags -fsanitize=address
3852     ;;
3853     *-msan)
3854         cc_default="${toolchain%-msan}"
3855         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3856         add_ldflags -fsanitize=memory
3857     ;;
3858     *-tsan)
3859         cc_default="${toolchain%-tsan}"
3860         add_cflags  -fsanitize=thread -fPIE
3861         add_ldflags -fsanitize=thread -pie
3862         case "$toolchain" in
3863             gcc-tsan)
3864                 add_cflags  -fPIC
3865                 add_ldflags -fPIC
3866                 ;;
3867         esac
3868     ;;
3869     *-usan)
3870         cc_default="${toolchain%-usan}"
3871         add_cflags  -fsanitize=undefined
3872         add_ldflags -fsanitize=undefined
3873     ;;
3874     valgrind-*)
3875         target_exec_default="valgrind"
3876         case "$toolchain" in
3877             valgrind-massif)
3878                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3879                 ;;
3880             valgrind-memcheck)
3881                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3882                 ;;
3883         esac
3884     ;;
3885     msvc)
3886         # Check whether the current MSVC version needs the C99 converter.
3887         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3888         # support enough of C99 to build ffmpeg. Default to the new
3889         # behaviour if the regexp was unable to match anything, since this
3890         # successfully parses the version number of existing supported
3891         # versions that require the converter (MSVC 2010 and 2012).
3892         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3893         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3894             cc_default="cl"
3895             cxx_default="cl"
3896         else
3897             cc_default="c99wrap cl"
3898             cxx_default="c99wrap cl"
3899         fi
3900         ld_default="$source_path/compat/windows/mslink"
3901         nm_default="dumpbin -symbols"
3902         ar_default="lib"
3903         case "$arch" in
3904         aarch64|arm64)
3905             as_default="armasm64"
3906             ;;
3907         arm*)
3908             as_default="armasm"
3909             ;;
3910         esac
3911         target_os_default="win32"
3912         # Use a relative path for TMPDIR. This makes sure all the
3913         # ffconf temp files are written with a relative path, avoiding
3914         # issues with msys/win32 path conversion for MSVC parameters
3915         # such as -Fo<file> or -out:<file>.
3916         TMPDIR=.
3917     ;;
3918     icl)
3919         cc_default="icl"
3920         ld_default="xilink"
3921         nm_default="dumpbin -symbols"
3922         ar_default="xilib"
3923         target_os_default="win32"
3924         TMPDIR=.
3925     ;;
3926     gcov)
3927         add_cflags  -fprofile-arcs -ftest-coverage
3928         add_ldflags -fprofile-arcs -ftest-coverage
3929     ;;
3930     llvm-cov)
3931         add_cflags -fprofile-arcs -ftest-coverage
3932         add_ldflags --coverage
3933     ;;
3934     hardened)
3935         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3936         add_cflags   -fno-strict-overflow -fstack-protector-all
3937         add_ldflags  -Wl,-z,relro -Wl,-z,now
3938         add_cflags   -fPIE
3939         add_ldexeflags -fPIE -pie
3940     ;;
3941     ?*)
3942         die "Unknown toolchain $toolchain"
3943     ;;
3944 esac
3945
3946 if test -n "$cross_prefix"; then
3947     test -n "$arch" && test -n "$target_os" ||
3948         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3949     enable cross_compile
3950 fi
3951
3952 ar_default="${cross_prefix}${ar_default}"
3953 cc_default="${cross_prefix}${cc_default}"
3954 cxx_default="${cross_prefix}${cxx_default}"
3955 nm_default="${cross_prefix}${nm_default}"
3956 pkg_config_default="${cross_prefix}${pkg_config_default}"
3957 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3958     ranlib_default="${cross_prefix}${ranlib_default} -D"
3959 else
3960     ranlib_default="${cross_prefix}${ranlib_default}"
3961 fi
3962 strip_default="${cross_prefix}${strip_default}"
3963 windres_default="${cross_prefix}${windres_default}"
3964
3965 sysinclude_default="${sysroot}/usr/include"
3966
3967 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3968     target_exec target_os x86asmexe nvcc
3969 enabled cross_compile || host_cc_default=$cc
3970 set_default host_cc
3971
3972 pkg_config_fail_message=""
3973 if ! $pkg_config --version >/dev/null 2>&1; then
3974     warn "$pkg_config not found, library detection may fail."
3975     pkg_config=false
3976 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3977     pkg_config_fail_message="
3978 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3979 fi
3980
3981 if test $doxygen != $doxygen_default && \
3982   ! $doxygen --version >/dev/null 2>&1; then
3983     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3984 fi
3985
3986 exesuf() {
3987     case $1 in
3988         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3989     esac
3990 }
3991
3992 EXESUF=$(exesuf $target_os)
3993 HOSTEXESUF=$(exesuf $host_os)
3994
3995 # set temporary file name
3996 : ${TMPDIR:=$TEMPDIR}
3997 : ${TMPDIR:=$TMP}
3998 : ${TMPDIR:=/tmp}
3999
4000 if [ -n "$tempprefix" ] ; then
4001     mktemp(){
4002         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4003         echo "$tmpname"
4004         mkdir "$tmpname"
4005     }
4006 elif ! check_cmd mktemp -u XXXXXX; then
4007     # simple replacement for missing mktemp
4008     # NOT SAFE FOR GENERAL USE
4009     mktemp(){
4010         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4011         echo "$tmpname"
4012         mkdir "$tmpname"
4013     }
4014 fi
4015
4016 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4017     die "Unable to create temporary directory in $TMPDIR."
4018
4019 tmpfile(){
4020     tmp="${FFTMPDIR}/test"$2
4021     (set -C; exec > $tmp) 2> /dev/null ||
4022         die "Unable to create temporary file in $FFTMPDIR."
4023     eval $1=$tmp
4024 }
4025
4026 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4027 trap 'exit 2' INT
4028
4029 tmpfile TMPASM .asm
4030 tmpfile TMPC   .c
4031 tmpfile TMPCPP .cpp
4032 tmpfile TMPE   $EXESUF
4033 tmpfile TMPH   .h
4034 tmpfile TMPM   .m
4035 tmpfile TMPO   .o
4036 tmpfile TMPS   .S
4037 tmpfile TMPSH  .sh
4038 tmpfile TMPV   .ver
4039
4040 unset -f mktemp
4041
4042 chmod +x $TMPE
4043
4044 # make sure we can execute files in $TMPDIR
4045 cat > $TMPSH 2>> $logfile <<EOF
4046 #! /bin/sh
4047 EOF
4048 chmod +x $TMPSH >> $logfile 2>&1
4049 if ! $TMPSH >> $logfile 2>&1; then
4050     cat <<EOF
4051 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4052 variable to another directory and make sure that it is not mounted noexec.
4053 EOF
4054     die "Sanity test failed."
4055 fi
4056
4057 armasm_flags(){
4058     for flag; do
4059         case $flag in
4060             # Filter out MSVC cl.exe options from cflags that shouldn't
4061             # be passed to gas-preprocessor
4062             -M[TD]*)                                            ;;
4063             *)                  echo $flag                      ;;
4064         esac
4065    done
4066 }
4067
4068 cparser_flags(){
4069     for flag; do
4070         case $flag in
4071             -Wno-switch)             echo -Wno-switch-enum ;;
4072             -Wno-format-zero-length) ;;
4073             -Wdisabled-optimization) ;;
4074             -Wno-pointer-sign)       echo -Wno-other ;;
4075             *)                       echo $flag ;;
4076         esac
4077     done
4078 }
4079
4080 msvc_common_flags(){
4081     for flag; do
4082         case $flag in
4083             # In addition to specifying certain flags under the compiler
4084             # specific filters, they must be specified here as well or else the
4085             # generic catch all at the bottom will print the original flag.
4086             -Wall)                ;;
4087             -Wextra)              ;;
4088             -std=c99)             ;;
4089             # Common flags
4090             -fomit-frame-pointer) ;;
4091             -g)                   echo -Z7 ;;
4092             -fno-math-errno)      ;;
4093             -fno-common)          ;;
4094             -fno-signed-zeros)    ;;
4095             -fPIC)                ;;
4096             -mthumb)              ;;
4097             -march=*)             ;;
4098             -lz)                  echo zlib.lib ;;
4099             -lx264)               echo libx264.lib ;;
4100             -lstdc++)             ;;
4101             -l*)                  echo ${flag#-l}.lib ;;
4102             -LARGEADDRESSAWARE)   echo $flag ;;
4103             -L*)                  echo -libpath:${flag#-L} ;;
4104             *)                    echo $flag ;;
4105         esac
4106     done
4107 }
4108
4109 msvc_flags(){
4110     msvc_common_flags "$@"
4111     for flag; do
4112         case $flag in
4113             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4114                                        -wd4554 ;;
4115             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4116                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4117                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4118                                        -wd4307 \
4119                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4120         esac
4121     done
4122 }
4123
4124 icl_flags(){
4125     msvc_common_flags "$@"
4126     for flag; do
4127         case $flag in
4128             # Despite what Intel's documentation says -Wall, which is supported
4129             # on Windows, does enable remarks so disable them here.
4130             -Wall)                echo $flag -Qdiag-disable:remark ;;
4131             -std=c99)             echo -Qstd=c99 ;;
4132             -flto)                echo -ipo ;;
4133         esac
4134     done
4135 }
4136
4137 icc_flags(){
4138     for flag; do
4139         case $flag in
4140             -flto)                echo -ipo ;;
4141             *)                    echo $flag ;;
4142         esac
4143     done
4144 }
4145
4146 suncc_flags(){
4147     for flag; do
4148         case $flag in
4149             -march=*|-mcpu=*)
4150                 case "${flag#*=}" in
4151                     native)                   echo -xtarget=native       ;;
4152                     v9|niagara)               echo -xarch=sparc          ;;
4153                     ultrasparc)               echo -xarch=sparcvis       ;;
4154                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4155                     i586|pentium)             echo -xchip=pentium        ;;
4156                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4157                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4158                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4159                     pentium4*)          echo -xtarget=pentium4           ;;
4160                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4161                     *-sse3)             echo -xarch=sse3                 ;;
4162                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4163                     bonnell)                   echo -xarch=ssse3         ;;
4164                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4165                     westmere)                  echo -xtarget=westmere    ;;
4166                     silvermont)                echo -xarch=sse4_2        ;;
4167                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4168                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4169                                                echo -xarch=avx           ;;
4170                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4171                     btver1)                    echo -xarch=amdsse4a      ;;
4172                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4173                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4174                     k8|opteron|athlon64|athlon-fx)
4175                                                echo -xarch=sse2a         ;;
4176                     athlon*)                   echo -xarch=pentium_proa  ;;
4177                 esac
4178                 ;;
4179             -std=c99)             echo -xc99              ;;
4180             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4181             -fPIC)                echo -KPIC -xcode=pic32 ;;
4182             -W*,*)                echo $flag              ;;
4183             -f*-*|-W*|-mimpure-text)                      ;;
4184             -shared)              echo -G                 ;;
4185             *)                    echo $flag              ;;
4186         esac
4187     done
4188 }
4189
4190 probe_cc(){
4191     pfx=$1
4192     _cc=$2
4193     first=$3
4194
4195     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4196     unset _ld_o _ldflags _ld_lib _ld_path
4197     unset _depflags _DEPCMD _DEPFLAGS
4198     _flags_filter=echo
4199
4200     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4201         true # no-op to avoid reading stdin in following checks
4202     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4203         _type=llvm_gcc
4204         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4205         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4206         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4210         _type=gcc
4211         gcc_version=$($_cc --version | head -n1)
4212         gcc_basever=$($_cc -dumpversion)
4213         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4214         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4215         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4216         case $gcc_basever in
4217             2) ;;
4218             2.*) ;;
4219             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4220         esac
4221         if [ "$first" = true ]; then
4222             case $gcc_basever in
4223                 4.2*)
4224                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4225             esac
4226         fi
4227         _cflags_speed='-O3'
4228         _cflags_size='-Os'
4229     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4230         _type=icc
4231         _ident=$($_cc --version | head -n1)
4232         _depflags='-MMD'
4233         _cflags_speed='-O3'
4234         _cflags_size='-Os'
4235         _cflags_noopt='-O1'
4236         _flags_filter=icc_flags
4237     elif $_cc -v 2>&1 | grep -q xlc; then
4238         _type=xlc
4239         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4240         _cflags_speed='-O5'
4241         _cflags_size='-O5 -qcompact'
4242     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4243         test -d "$sysroot" || die "No valid sysroot specified."
4244         _type=armcc
4245         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4246         armcc_conf="$PWD/armcc.conf"
4247         $_cc --arm_linux_configure                 \
4248              --arm_linux_config_file="$armcc_conf" \
4249              --configure_sysroot="$sysroot"        \
4250              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4251              die "Error creating armcc configuration file."
4252         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4253         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4254         as_default="${cross_prefix}gcc"
4255         _depflags='-MMD'
4256         _cflags_speed='-O3'
4257         _cflags_size='-Os'
4258     elif $_cc -v 2>&1 | grep -q clang; then
4259         _type=clang
4260         _ident=$($_cc --version 2>/dev/null | head -n1)
4261         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4262         _cflags_speed='-O3'
4263         _cflags_size='-Oz'
4264     elif $_cc -V 2>&1 | grep -q Sun; then
4265         _type=suncc
4266         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4267         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4268         _DEPFLAGS='-xM1 -xc99'
4269         _ldflags='-std=c99'
4270         _cflags_speed='-O5'
4271         _cflags_size='-O5 -xspace'
4272         _flags_filter=suncc_flags
4273     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4274         _type=pathscale
4275         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4276         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4277         _cflags_speed='-O2'
4278         _cflags_size='-Os'
4279         _flags_filter='filter_out -Wdisabled-optimization'
4280     elif $_cc -v 2>&1 | grep -q Open64; then
4281         _type=open64
4282         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4283         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4284         _cflags_speed='-O2'
4285         _cflags_size='-Os'
4286         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4287     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4288         _type=armasm
4289         _ident=$($_cc | head -n1)
4290         # 4509: "This form of conditional instruction is deprecated"
4291         _flags="-nologo -ignore 4509"
4292         _flags_filter=armasm_flags
4293     elif $_cc 2>&1 | grep -q Intel; then
4294         _type=icl
4295         _ident=$($_cc 2>&1 | head -n1)
4296         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4297         # Not only is O3 broken on 13.x+ but it is slower on all previous
4298         # versions (tested) as well.
4299         _cflags_speed="-O2"
4300         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4301         if $_cc 2>&1 | grep -q Linker; then
4302             _ld_o='-out:$@'
4303         else
4304             _ld_o='-Fe$@'
4305         fi
4306         _cc_o='-Fo$@'
4307         _cc_e='-P'
4308         _flags_filter=icl_flags
4309         _ld_lib='lib%.a'
4310         _ld_path='-libpath:'
4311         # -Qdiag-error to make icl error when seeing certain unknown arguments
4312         _flags='-nologo -Qdiag-error:4044,10157'
4313         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4314         # with MSVC which enables it by default.
4315         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4316         disable stripping
4317     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4318         # lld can emulate multiple different linkers; in ms link.exe mode,
4319         # the -? parameter gives the help output which contains an identifyable
4320         # string, while it gives an error in other modes.
4321         _type=lld-link
4322         # The link.exe mode doesn't have a switch for getting the version,
4323         # but we can force it back to gnu mode and get the version from there.
4324         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4325         _ld_o='-out:$@'
4326         _flags_filter=msvc_flags
4327         _ld_lib='lib%.a'
4328         _ld_path='-libpath:'
4329     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4330         _type=msvc
4331         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4332         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4333         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4334         _cflags_speed="-O2"
4335         _cflags_size="-O1"
4336         _cflags_noopt="-O1"
4337         if $_cc -nologo- 2>&1 | grep -q Linker; then
4338             _ld_o='-out:$@'
4339         else
4340             _ld_o='-Fe$@'
4341         fi
4342         _cc_o='-Fo$@'
4343         _cc_e='-P -Fi$@'
4344         _flags_filter=msvc_flags
4345         _ld_lib='lib%.a'
4346         _ld_path='-libpath:'
4347         _flags='-nologo'
4348         disable stripping
4349     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4350         _type=cparser
4351         _ident=$($_cc --version | head -n1)
4352         _depflags='-MMD'
4353         _cflags_speed='-O4'
4354         _cflags_size='-O2'
4355         _flags_filter=cparser_flags
4356     fi
4357
4358     eval ${pfx}_type=\$_type
4359     eval ${pfx}_ident=\$_ident
4360 }
4361
4362 set_ccvars(){
4363     eval ${1}_C=\${_cc_c-\${${1}_C}}
4364     eval ${1}_E=\${_cc_e-\${${1}_E}}
4365     eval ${1}_O=\${_cc_o-\${${1}_O}}
4366
4367     if [ -n "$_depflags" ]; then
4368         eval ${1}_DEPFLAGS=\$_depflags
4369     else
4370         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4371         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4372         eval DEP${1}FLAGS=\$_flags
4373     fi
4374 }
4375
4376 probe_cc cc "$cc" "true"
4377 cflags_filter=$_flags_filter
4378 cflags_speed=$_cflags_speed
4379 cflags_size=$_cflags_size
4380 cflags_noopt=$_cflags_noopt
4381 add_cflags $_flags $_cflags
4382 cc_ldflags=$_ldflags
4383 set_ccvars CC
4384 set_ccvars CXX
4385
4386 probe_cc hostcc "$host_cc"
4387 host_cflags_filter=$_flags_filter
4388 host_cflags_speed=$_cflags_speed
4389 add_host_cflags  $_flags $_cflags
4390 set_ccvars HOSTCC
4391
4392 test -n "$cc_type" && enable $cc_type ||
4393     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4394
4395 : ${as_default:=$cc}
4396 : ${objcc_default:=$cc}
4397 : ${dep_cc_default:=$cc}
4398 : ${ld_default:=$cc}
4399 : ${host_ld_default:=$host_cc}
4400 set_default ar as objcc dep_cc ld ln_s host_ld windres
4401
4402 probe_cc as "$as"
4403 asflags_filter=$_flags_filter
4404 add_asflags $_flags $_cflags
4405 set_ccvars AS
4406
4407 probe_cc objcc "$objcc"
4408 objcflags_filter=$_flags_filter
4409 add_objcflags $_flags $_cflags
4410 set_ccvars OBJC
4411
4412 probe_cc ld "$ld"
4413 ldflags_filter=$_flags_filter
4414 add_ldflags $_flags $_ldflags
4415 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4416 LD_O=${_ld_o-$LD_O}
4417 LD_LIB=${_ld_lib-$LD_LIB}
4418 LD_PATH=${_ld_path-$LD_PATH}
4419
4420 probe_cc hostld "$host_ld"
4421 host_ldflags_filter=$_flags_filter
4422 add_host_ldflags $_flags $_ldflags
4423 HOSTLD_O=${_ld_o-$HOSTLD_O}
4424
4425 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4426     probe_cc depcc "$dep_cc"
4427     CCDEP=${_DEPCMD:-$DEPCMD}
4428     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4429     DEPCCFLAGS=$_flags
4430 fi
4431
4432 if $ar 2>&1 | grep -q Microsoft; then
4433     arflags="-nologo"
4434     ar_o='-out:$@'
4435 elif $ar 2>&1 | grep -q "\[D\] "; then
4436     arflags="rcD"
4437     ar_o='$@'
4438 else
4439     arflags="rc"
4440     ar_o='$@'
4441 fi
4442
4443 add_cflags $extra_cflags
4444 add_cxxflags $extra_cxxflags
4445 add_objcflags $extra_objcflags
4446 add_asflags $extra_cflags
4447
4448 if test -n "$sysroot"; then
4449     case "$cc_type" in
4450         gcc|llvm_gcc|clang)
4451             add_cppflags --sysroot="$sysroot"
4452             add_ldflags --sysroot="$sysroot"
4453         ;;
4454     esac
4455 fi
4456
4457 if test "$cpu" = host; then
4458     enabled cross_compile &&
4459         die "--cpu=host makes no sense when cross-compiling."
4460
4461     case "$cc_type" in
4462         gcc|llvm_gcc)
4463             check_native(){
4464                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4465                 sed -n "/cc1.*$1=/{
4466                             s/.*$1=\\([^ ]*\\).*/\\1/
4467                             p
4468                             q
4469                         }" $TMPE
4470             }
4471             cpu=$(check_native -march || check_native -mcpu)
4472         ;;
4473         clang)
4474             check_native(){
4475                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4476                 sed -n "/cc1.*-target-cpu /{
4477                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4478                             p
4479                             q
4480                         }" $TMPE
4481             }
4482             cpu=$(check_native -march)
4483         ;;
4484     esac
4485
4486     test "${cpu:-host}" = host &&
4487         die "--cpu=host not supported with compiler $cc"
4488 fi
4489
4490 # Deal with common $arch aliases
4491 case "$arch" in
4492     aarch64|arm64)
4493         arch="aarch64"
4494     ;;
4495     arm*|iPad*|iPhone*)
4496         arch="arm"
4497     ;;
4498     mips*|IP*)
4499         case "$arch" in
4500         *el)
4501             add_cppflags -EL
4502             add_ldflags -EL
4503         ;;
4504         *eb)
4505             add_cppflags -EB
4506             add_ldflags -EB
4507         ;;
4508         esac
4509         arch="mips"
4510     ;;
4511     parisc*|hppa*)
4512         arch="parisc"
4513     ;;
4514     "Power Macintosh"|ppc*|powerpc*)
4515         arch="ppc"
4516     ;;
4517     s390|s390x)
4518         arch="s390"
4519     ;;
4520     sh4|sh)
4521         arch="sh4"
4522     ;;
4523     sun4*|sparc*)
4524         arch="sparc"
4525     ;;
4526     tilegx|tile-gx)
4527         arch="tilegx"
4528     ;;
4529     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4530         arch="x86"
4531     ;;
4532 esac
4533
4534 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4535 enable $arch
4536
4537 # Add processor-specific flags
4538 if enabled aarch64; then
4539
4540     case $cpu in
4541         armv*)
4542             cpuflags="-march=$cpu"
4543         ;;
4544         *)
4545             cpuflags="-mcpu=$cpu"
4546         ;;
4547     esac
4548
4549 elif enabled alpha; then
4550
4551     cpuflags="-mcpu=$cpu"
4552
4553 elif enabled arm; then
4554
4555     check_arm_arch() {
4556         check_cpp_condition stddef.h \
4557             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4558             $cpuflags
4559     }
4560
4561     probe_arm_arch() {
4562         if   check_arm_arch 4;        then echo armv4
4563         elif check_arm_arch 4T;       then echo armv4t
4564         elif check_arm_arch 5;        then echo armv5
4565         elif check_arm_arch 5E;       then echo armv5e
4566         elif check_arm_arch 5T;       then echo armv5t
4567         elif check_arm_arch 5TE;      then echo armv5te
4568         elif check_arm_arch 5TEJ;     then echo armv5te
4569         elif check_arm_arch 6;        then echo armv6
4570         elif check_arm_arch 6J;       then echo armv6j
4571         elif check_arm_arch 6K;       then echo armv6k
4572         elif check_arm_arch 6Z;       then echo armv6z
4573         elif check_arm_arch 6KZ;      then echo armv6zk
4574         elif check_arm_arch 6ZK;      then echo armv6zk
4575         elif check_arm_arch 6T2;      then echo armv6t2
4576         elif check_arm_arch 7;        then echo armv7
4577         elif check_arm_arch 7A  7_A;  then echo armv7-a
4578         elif check_arm_arch 7S;       then echo armv7-a
4579         elif check_arm_arch 7R  7_R;  then echo armv7-r
4580         elif check_arm_arch 7M  7_M;  then echo armv7-m
4581         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4582         elif check_arm_arch 8A  8_A;  then echo armv8-a
4583         fi
4584     }
4585
4586     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4587
4588     case $cpu in
4589         armv*)
4590             cpuflags="-march=$cpu"
4591             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4592         ;;
4593         *)
4594             cpuflags="-mcpu=$cpu"
4595             case $cpu in
4596                 cortex-a*)                               subarch=armv7a  ;;
4597                 cortex-r*)                               subarch=armv7r  ;;
4598                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4599                 arm11*)                                  subarch=armv6   ;;
4600                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4601                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4602                 *)                             subarch=$(probe_arm_arch) ;;
4603             esac
4604         ;;
4605     esac
4606
4607     case "$subarch" in
4608         armv5t*)    enable fast_clz                ;;
4609         armv[6-8]*)
4610             enable fast_clz
4611             disabled fast_unaligned || enable fast_unaligned
4612             ;;
4613     esac
4614
4615 elif enabled avr32; then
4616
4617     case $cpu in
4618         ap7[02]0[0-2])
4619             subarch="avr32_ap"
4620             cpuflags="-mpart=$cpu"
4621         ;;
4622         ap)
4623             subarch="avr32_ap"
4624             cpuflags="-march=$cpu"
4625         ;;
4626         uc3[ab]*)
4627             subarch="avr32_uc"
4628             cpuflags="-mcpu=$cpu"
4629         ;;
4630         uc)
4631             subarch="avr32_uc"
4632             cpuflags="-march=$cpu"
4633         ;;
4634     esac
4635
4636 elif enabled bfin; then
4637
4638     cpuflags="-mcpu=$cpu"
4639
4640 elif enabled mips; then
4641
4642     cpuflags="-march=$cpu"
4643
4644     if [ "$cpu" != "generic" ]; then
4645         disable mips32r2
4646         disable mips32r5
4647         disable mips64r2
4648         disable mips32r6
4649         disable mips64r6
4650         disable loongson2
4651         disable loongson3
4652
4653         case $cpu in
4654             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4655                 enable mips32r2
4656                 disable msa
4657             ;;
4658             p5600|i6400|p6600)
4659                 disable mipsdsp
4660                 disable mipsdspr2
4661             ;;
4662             loongson*)
4663                 enable loongson2
4664                 enable loongson3
4665                 enable local_aligned
4666                 enable simd_align_16
4667                 enable fast_64bit
4668                 enable fast_clz
4669                 enable fast_cmov
4670                 enable fast_unaligned
4671                 disable aligned_stack
4672                 disable mipsfpu
4673                 disable mipsdsp
4674                 disable mipsdspr2
4675                 case $cpu in
4676                     loongson3*)
4677                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4678                     ;;
4679                     loongson2e)
4680                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4681                     ;;
4682                     loongson2f)
4683                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4684                     ;;
4685                 esac
4686             ;;
4687             *)
4688                 # Unknown CPU. Disable everything.
4689                 warn "unknown CPU. Disabling all MIPS optimizations."
4690                 disable mipsfpu
4691                 disable mipsdsp
4692                 disable mipsdspr2
4693                 disable msa
4694                 disable mmi
4695             ;;
4696         esac
4697
4698         case $cpu in
4699             24kc)
4700                 disable mipsfpu
4701                 disable mipsdsp
4702                 disable mipsdspr2
4703             ;;
4704             24kf*)
4705                 disable mipsdsp
4706                 disable mipsdspr2
4707             ;;
4708             24kec|34kc|1004kc)
4709                 disable mipsfpu
4710                 disable mipsdspr2
4711             ;;
4712             24kef*|34kf*|1004kf*)
4713                 disable mipsdspr2
4714             ;;
4715             74kc)
4716                 disable mipsfpu
4717             ;;
4718             p5600)
4719                 enable mips32r5
4720                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4721             ;;
4722             i6400)
4723                 enable mips64r6
4724                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4725             ;;
4726             p6600)
4727                 enable mips64r6
4728                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4729             ;;
4730         esac
4731     else
4732         # We do not disable anything. Is up to the user to disable the unwanted features.
4733         warn 'generic cpu selected'
4734     fi
4735
4736 elif enabled ppc; then
4737
4738     disable ldbrx
4739
4740     case $(tolower $cpu) in
4741         601|ppc601|powerpc601)
4742             cpuflags="-mcpu=601"
4743             disable altivec
4744         ;;
4745         603*|ppc603*|powerpc603*)
4746             cpuflags="-mcpu=603"
4747             disable altivec
4748         ;;
4749         604*|ppc604*|powerpc604*)
4750             cpuflags="-mcpu=604"
4751             disable altivec
4752         ;;
4753         g3|75*|ppc75*|powerpc75*)
4754             cpuflags="-mcpu=750"
4755             disable altivec
4756         ;;
4757         g4|745*|ppc745*|powerpc745*)
4758             cpuflags="-mcpu=7450"
4759             disable vsx
4760         ;;
4761         74*|ppc74*|powerpc74*)
4762             cpuflags="-mcpu=7400"
4763             disable vsx
4764         ;;
4765         g5|970|ppc970|powerpc970)
4766             cpuflags="-mcpu=970"
4767             disable vsx
4768         ;;
4769         power[3-6]*)
4770             cpuflags="-mcpu=$cpu"
4771             disable vsx
4772         ;;
4773         power[7-8]*)
4774             cpuflags="-mcpu=$cpu"
4775         ;;
4776         cell)
4777             cpuflags="-mcpu=cell"
4778             enable ldbrx
4779             disable vsx
4780         ;;
4781         e500mc)
4782             cpuflags="-mcpu=e500mc"
4783             disable altivec
4784         ;;
4785         e500v2)
4786             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4787             disable altivec
4788             disable dcbzl
4789         ;;
4790         e500)
4791             cpuflags="-mcpu=8540 -mhard-float"
4792             disable altivec
4793             disable dcbzl
4794         ;;
4795     esac
4796
4797 elif enabled sparc; then
4798
4799     case $cpu in
4800         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4801             cpuflags="-mcpu=$cpu"
4802         ;;
4803         ultrasparc*|niagara[234])
4804             cpuflags="-mcpu=$cpu"
4805         ;;
4806     esac
4807
4808 elif enabled x86; then
4809
4810     case $cpu in
4811         i[345]86|pentium)
4812             cpuflags="-march=$cpu"
4813             disable i686
4814             disable mmx
4815         ;;
4816         # targets that do NOT support nopl and conditional mov (cmov)
4817         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4818             cpuflags="-march=$cpu"
4819             disable i686
4820         ;;
4821         # targets that do support nopl and conditional mov (cmov)
4822         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4823         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4824         |amdfam10|barcelona|b[dt]ver*|znver*)
4825             cpuflags="-march=$cpu"
4826             enable i686
4827             enable fast_cmov
4828         ;;
4829         # targets that do support conditional mov but on which it's slow
4830         pentium4|pentium4m|prescott|nocona)
4831             cpuflags="-march=$cpu"
4832             enable i686
4833             disable fast_cmov
4834         ;;
4835     esac
4836
4837 fi
4838
4839 if [ "$cpu" != generic ]; then
4840     add_cflags  $cpuflags
4841     add_asflags $cpuflags
4842     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4843 fi
4844
4845 # compiler sanity check
4846 check_exec <<EOF
4847 int main(void){ return 0; }
4848 EOF
4849 if test "$?" != 0; then
4850     echo "$cc is unable to create an executable file."
4851     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4852         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4853         echo "Only do this if you know what cross compiling means."
4854     fi
4855     die "C compiler test failed."
4856 fi
4857
4858 add_cppflags -D_ISOC99_SOURCE
4859 add_cxxflags -D__STDC_CONSTANT_MACROS
4860 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4861
4862 # some compilers silently accept -std=c11, so we also need to check that the
4863 # version macro is defined properly
4864 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4865     add_cflags -std=c11 ||
4866     check_cflags -std=c99
4867
4868 check_cppflags -D_FILE_OFFSET_BITS=64
4869 check_cppflags -D_LARGEFILE_SOURCE
4870
4871 add_host_cppflags -D_ISOC99_SOURCE
4872 check_host_cflags -std=c99
4873 check_host_cflags -Wall
4874 check_host_cflags $host_cflags_speed
4875
4876 check_64bit(){
4877     arch32=$1
4878     arch64=$2
4879     expr=${3:-'sizeof(void *) > 4'}
4880     check_code cc "" "int test[2*($expr) - 1]" &&
4881         subarch=$arch64 || subarch=$arch32
4882     enable $subarch
4883 }
4884
4885 case "$arch" in
4886     aarch64|alpha|ia64)
4887         enabled shared && enable_weak pic
4888     ;;
4889     mips)
4890         check_64bit mips mips64 '_MIPS_SIM > 1'
4891         enabled shared && enable_weak pic
4892     ;;
4893     parisc)
4894         check_64bit parisc parisc64
4895         enabled shared && enable_weak pic
4896     ;;
4897     ppc)
4898         check_64bit ppc ppc64
4899         enabled shared && enable_weak pic
4900     ;;
4901     s390)
4902         check_64bit s390 s390x
4903         enabled shared && enable_weak pic
4904     ;;
4905     sparc)
4906         check_64bit sparc sparc64