d3187d71eda3b941730ef4405c2d2734eb6669c6
[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   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --disable-alsa           disable ALSA support [autodetect]
205   --disable-appkit         disable Apple AppKit framework [autodetect]
206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
207   --enable-avisynth        enable reading of AviSynth script files [no]
208   --disable-bzlib          disable bzlib [autodetect]
209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
211   --enable-frei0r          enable frei0r video filtering [no]
212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
213                            if openssl, librtmp or gmp is not used [no]
214   --enable-gmp             enable gmp, needed for rtmp(t)e support
215                            if openssl or librtmp is not used [no]
216   --enable-gnutls          enable gnutls, needed for https support
217                            if openssl or libtls is not used [no]
218   --disable-iconv          disable iconv [autodetect]
219   --enable-jni             enable JNI support [no]
220   --enable-ladspa          enable LADSPA audio filtering [no]
221   --enable-libass          enable libass subtitles rendering,
222                            needed for subtitles and ass filter [no]
223   --enable-libbluray       enable BluRay reading using libbluray [no]
224   --enable-libbs2b         enable bs2b DSP library [no]
225   --enable-libcaca         enable textual display using libcaca [no]
226   --enable-libcelt         enable CELT decoding via libcelt [no]
227   --enable-libcdio         enable audio CD grabbing with libcdio [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   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration 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 set_all(){
573     value=$1
574     shift
575     for var in $*; do
576         eval $var=$value
577     done
578 }
579
580 set_weak(){
581     value=$1
582     shift
583     for var; do
584         eval : \${$var:=$value}
585     done
586 }
587
588 sanitize_var_name(){
589     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
590 }
591
592 set_sanitized(){
593     var=$1
594     shift
595     eval $(sanitize_var_name "$var")='$*'
596 }
597
598 get_sanitized(){
599     eval echo \$$(sanitize_var_name "$1")
600 }
601
602 pushvar(){
603     for pvar in $*; do
604         eval level=\${${pvar}_level:=0}
605         eval ${pvar}_${level}="\$$pvar"
606         eval ${pvar}_level=$(($level+1))
607     done
608 }
609
610 popvar(){
611     for pvar in $*; do
612         eval level=\${${pvar}_level:-0}
613         test $level = 0 && continue
614         eval level=$(($level-1))
615         eval $pvar="\${${pvar}_${level}}"
616         eval ${pvar}_level=$level
617         eval unset ${pvar}_${level}
618     done
619 }
620
621 request(){
622     for var in $*; do
623         eval ${var}_requested=yes
624         eval $var=
625     done
626 }
627
628 enable(){
629     set_all yes $*
630 }
631
632 disable(){
633     set_all no $*
634 }
635
636 enable_weak(){
637     set_weak yes $*
638 }
639
640 disable_weak(){
641     set_weak no $*
642 }
643
644 enable_sanitized(){
645     for var; do
646         enable $(sanitize_var_name $var)
647     done
648 }
649
650 disable_sanitized(){
651     for var; do
652         disable $(sanitize_var_name $var)
653     done
654 }
655
656 do_enable_deep(){
657     for var; do
658         enabled $var && continue
659         eval sel="\$${var}_select"
660         eval sgs="\$${var}_suggest"
661         pushvar var sgs
662         enable_deep $sel
663         popvar sgs
664         enable_deep_weak $sgs
665         popvar var
666     done
667 }
668
669 enable_deep(){
670     do_enable_deep $*
671     enable $*
672 }
673
674 enable_deep_weak(){
675     for var; do
676         disabled $var && continue
677         pushvar var
678         do_enable_deep $var
679         popvar var
680         enable_weak $var
681     done
682 }
683
684 requested(){
685     test "${1#!}" = "$1" && op="=" || op="!="
686     eval test "x\$${1#!}_requested" $op "xyes"
687 }
688
689 enabled(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}" $op "xyes"
692 }
693
694 disabled(){
695     test "${1#!}" = "$1" && op="=" || op="!="
696     eval test "x\$${1#!}" $op "xno"
697 }
698
699 enabled_all(){
700     for opt; do
701         enabled $opt || return 1
702     done
703 }
704
705 disabled_all(){
706     for opt; do
707         disabled $opt || return 1
708     done
709 }
710
711 enabled_any(){
712     for opt; do
713         enabled $opt && return 0
714     done
715 }
716
717 disabled_any(){
718     for opt; do
719         disabled $opt && return 0
720     done
721     return 1
722 }
723
724 set_default(){
725     for opt; do
726         eval : \${$opt:=\$${opt}_default}
727     done
728 }
729
730 is_in(){
731     value=$1
732     shift
733     for var in $*; do
734         [ $var = $value ] && return 0
735     done
736     return 1
737 }
738
739 check_deps(){
740     for cfg; do
741         enabled ${cfg}_checking && die "Circular dependency for $cfg."
742         disabled ${cfg}_checking && continue
743         enable ${cfg}_checking
744
745         eval dep_all="\$${cfg}_deps"
746         eval dep_any="\$${cfg}_deps_any"
747         eval dep_con="\$${cfg}_conflict"
748         eval dep_sel="\$${cfg}_select"
749         eval dep_sgs="\$${cfg}_suggest"
750         eval dep_ifa="\$${cfg}_if"
751         eval dep_ifn="\$${cfg}_if_any"
752
753         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
754         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
755         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
756
757         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
758         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
759         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
760         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
761         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
762         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
763
764         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
765
766         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
767             # filter out library deps, these do not belong in extralibs
768             is_in $dep $LIBRARY_LIST && continue
769             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
770         done
771
772         disable ${cfg}_checking
773     done
774 }
775
776 print_config(){
777     pfx=$1
778     files=$2
779     shift 2
780     map 'eval echo "$v \${$v:-no}"' "$@" |
781     awk "BEGIN { split(\"$files\", files) }
782         {
783             c = \"$pfx\" toupper(\$1);
784             v = \$2;
785             sub(/yes/, 1, v);
786             sub(/no/,  0, v);
787             for (f in files) {
788                 file = files[f];
789                 if (file ~ /\\.h\$/) {
790                     printf(\"#define %s %d\\n\", c, v) >>file;
791                 } else if (file ~ /\\.asm\$/) {
792                     printf(\"%%define %s %d\\n\", c, v) >>file;
793                 } else if (file ~ /\\.mak\$/) {
794                     n = -v ? \"\" : \"!\";
795                     printf(\"%s%s=yes\\n\", n, c) >>file;
796                 } else if (file ~ /\\.texi\$/) {
797                     pre = -v ? \"\" : \"@c \";
798                     yesno = \$2;
799                     c2 = tolower(c);
800                     gsub(/_/, \"-\", c2);
801                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
802                 }
803             }
804         }"
805 }
806
807 print_enabled(){
808     suf=$1
809     shift
810     for v; do
811         enabled $v && printf "%s\n" ${v%$suf}
812     done
813 }
814
815 append(){
816     var=$1
817     shift
818     eval "$var=\"\$$var $*\""
819 }
820
821 prepend(){
822     var=$1
823     shift
824     eval "$var=\"$* \$$var\""
825 }
826
827 unique(){
828     var=$1
829     uniq_list=""
830     for tok in $(eval echo \$$var); do
831         uniq_list="$(filter_out $tok $uniq_list) $tok"
832     done
833     eval "$var=\"${uniq_list}\""
834 }
835
836 resolve(){
837     var=$1
838     tmpvar=
839     for entry in $(eval echo \$$var); do
840         tmpvar="$tmpvar $(eval echo \$${entry})"
841     done
842     eval "$var=\"${tmpvar}\""
843 }
844
845 add_cppflags(){
846     append CPPFLAGS "$@"
847 }
848
849 add_cflags(){
850     append CFLAGS $($cflags_filter "$@")
851 }
852
853 add_cflags_headers(){
854     append CFLAGS_HEADERS $($cflags_filter "$@")
855 }
856
857 add_cxxflags(){
858     append CXXFLAGS $($cflags_filter "$@")
859 }
860
861 add_asflags(){
862     append ASFLAGS $($asflags_filter "$@")
863 }
864
865 add_objcflags(){
866     append OBJCFLAGS $($objcflags_filter "$@")
867 }
868
869 add_ldflags(){
870     append LDFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldexeflags(){
874     append LDEXEFLAGS $($ldflags_filter "$@")
875 }
876
877 add_ldsoflags(){
878     append LDSOFLAGS $($ldflags_filter "$@")
879 }
880
881 add_stripflags(){
882     append ASMSTRIPFLAGS "$@"
883 }
884
885 add_extralibs(){
886     prepend extralibs $($ldflags_filter "$@")
887 }
888
889 add_host_cppflags(){
890     append host_cppflags "$@"
891 }
892
893 add_host_cflags(){
894     append host_cflags $($host_cflags_filter "$@")
895 }
896
897 add_host_ldflags(){
898     append host_ldflags $($host_ldflags_filter "$@")
899 }
900
901 add_compat(){
902     append compat_objs $1
903     shift
904     map 'add_cppflags -D$v' "$@"
905 }
906
907 check_cmd(){
908     log "$@"
909     "$@" >> $logfile 2>&1
910 }
911
912 check_stat(){
913     log check_stat "$@"
914     stat "$1" >> $logfile 2>&1
915 }
916
917 cc_o(){
918     eval printf '%s\\n' $CC_O
919 }
920
921 cc_e(){
922     eval printf '%s\\n' $CC_E
923 }
924
925 check_cc(){
926     log check_cc "$@"
927     cat > $TMPC
928     log_file $TMPC
929     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
930 }
931
932 check_cxx(){
933     log check_cxx "$@"
934     cat > $TMPCPP
935     log_file $TMPCPP
936     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
937 }
938
939 check_objcc(){
940     log check_objcc "$@"
941     cat > $TMPM
942     log_file $TMPM
943     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
944 }
945
946 check_cpp(){
947     log check_cpp "$@"
948     cat > $TMPC
949     log_file $TMPC
950     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
951 }
952
953 as_o(){
954     eval printf '%s\\n' $AS_O
955 }
956
957 check_as(){
958     log check_as "$@"
959     cat > $TMPS
960     log_file $TMPS
961     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
962 }
963
964 check_inline_asm(){
965     log check_inline_asm "$@"
966     name="$1"
967     code="$2"
968     shift 2
969     disable $name
970     check_cc "$@" <<EOF && enable $name
971 void foo(void){ __asm__ volatile($code); }
972 EOF
973 }
974
975 check_inline_asm_flags(){
976     log check_inline_asm_flags "$@"
977     name="$1"
978     code="$2"
979     flags=''
980     shift 2
981     while [ "$1" != "" ]; do
982       append flags $1
983       shift
984     done;
985     disable $name
986     cat > $TMPC <<EOF
987 void foo(void){ __asm__ volatile($code); }
988 EOF
989     log_file $TMPC
990     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
991     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
992 }
993
994 check_insn(){
995     log check_insn "$@"
996     check_inline_asm ${1}_inline "\"$2\""
997     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
998 }
999
1000 check_x86asm(){
1001     log check_x86asm "$@"
1002     echo "$1" > $TMPS
1003     log_file $TMPS
1004     shift 1
1005     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1006 }
1007
1008 ld_o(){
1009     eval printf '%s\\n' $LD_O
1010 }
1011
1012 check_ld(){
1013     log check_ld "$@"
1014     type=$1
1015     shift 1
1016     flags=$(filter_out '-l*|*.so' $@)
1017     libs=$(filter '-l*|*.so' $@)
1018     check_$type $($cflags_filter $flags) || return
1019     flags=$($ldflags_filter $flags)
1020     libs=$($ldflags_filter $libs)
1021     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1022 }
1023
1024 print_include(){
1025     hdr=$1
1026     test "${hdr%.h}" = "${hdr}" &&
1027         echo "#include $hdr"    ||
1028         echo "#include <$hdr>"
1029 }
1030
1031 check_code(){
1032     log check_code "$@"
1033     check=$1
1034     headers=$2
1035     code=$3
1036     shift 3
1037     {
1038         for hdr in $headers; do
1039             print_include $hdr
1040         done
1041         echo "int main(void) { $code; return 0; }"
1042     } | check_$check "$@"
1043 }
1044
1045 check_cppflags(){
1046     log check_cppflags "$@"
1047     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1048 #include <stdlib.h>
1049 EOF
1050 }
1051
1052 test_cflags(){
1053     log test_cflags "$@"
1054     set -- $($cflags_filter "$@")
1055     check_cc "$@" <<EOF
1056 int x;
1057 EOF
1058 }
1059
1060 check_cflags(){
1061     log check_cflags "$@"
1062     test_cflags "$@" && add_cflags "$@"
1063 }
1064
1065 check_cxxflags(){
1066     log check_cxxflags "$@"
1067     set -- $($cflags_filter "$@")
1068     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 test_objcflags(){
1074     log test_objcflags "$@"
1075     set -- $($objcflags_filter "$@")
1076     check_objcc "$@" <<EOF
1077 int x;
1078 EOF
1079 }
1080
1081 check_objcflags(){
1082     log check_objcflags "$@"
1083     test_objcflags "$@" && add_objcflags "$@"
1084 }
1085
1086 test_ldflags(){
1087     log test_ldflags "$@"
1088     set -- $($ldflags_filter "$@")
1089     check_ld "cc" "$@" <<EOF
1090 int main(void){ return 0; }
1091 EOF
1092 }
1093
1094 check_ldflags(){
1095     log check_ldflags "$@"
1096     test_ldflags "$@" && add_ldflags "$@"
1097 }
1098
1099 test_stripflags(){
1100     log test_stripflags "$@"
1101     # call check_cc to get a fresh TMPO
1102     check_cc <<EOF
1103 int main(void) { return 0; }
1104 EOF
1105     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1106 }
1107
1108 check_stripflags(){
1109     log check_stripflags "$@"
1110     test_stripflags "$@" && add_stripflags "$@"
1111 }
1112
1113 check_header(){
1114     log check_header "$@"
1115     headers=$1
1116     shift
1117     disable_sanitized $headers
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int x;"
1123     } | check_cpp "$@" && enable_sanitized $headers
1124 }
1125
1126 check_header_objcc(){
1127     log check_header_objcc "$@"
1128     rm -f -- "$TMPO"
1129     header=$1
1130     shift
1131     disable_sanitized $header
1132     {
1133        echo "#include <$header>"
1134        echo "int main(void) { return 0; }"
1135     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1136 }
1137
1138 check_apple_framework(){
1139     log check_apple_framework "$@"
1140     framework="$1"
1141     name="$(tolower $framework)"
1142     header="${framework}/${framework}.h"
1143     disable $name
1144     check_header_objcc $header &&
1145         enable $name && eval ${name}_extralibs='"-framework $framework"'
1146 }
1147
1148 check_func(){
1149     log check_func "$@"
1150     func=$1
1151     shift
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 extern int $func();
1155 int main(void){ $func(); }
1156 EOF
1157 }
1158
1159 check_complexfunc(){
1160     log check_complexfunc "$@"
1161     func=$1
1162     narg=$2
1163     shift 2
1164     test $narg = 2 && args="f, g" || args="f * I"
1165     disable $func
1166     check_ld "cc" "$@" <<EOF && enable $func
1167 #include <complex.h>
1168 #include <math.h>
1169 float foo(complex float f, complex float g) { return $func($args); }
1170 int main(void){ return (int) foo; }
1171 EOF
1172 }
1173
1174 check_mathfunc(){
1175     log check_mathfunc "$@"
1176     func=$1
1177     narg=$2
1178     shift 2
1179     test $narg = 2 && args="f, g" || args="f"
1180     disable $func
1181     check_ld "cc" "$@" <<EOF && enable $func
1182 #include <math.h>
1183 float foo(float f, float g) { return $func($args); }
1184 int main(void){ return (int) foo; }
1185 EOF
1186 }
1187
1188 check_func_headers(){
1189     log check_func_headers "$@"
1190     headers=$1
1191     funcs=$2
1192     shift 2
1193     {
1194         for hdr in $headers; do
1195             print_include $hdr
1196         done
1197         echo "#include <stdint.h>"
1198         for func in $funcs; do
1199             echo "long check_$func(void) { return (long) $func; }"
1200         done
1201         echo "int main(void) { int ret = 0;"
1202         # LTO could optimize out the test functions without this
1203         for func in $funcs; do
1204             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1205         done
1206         echo "return ret; }"
1207     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1208 }
1209
1210 check_class_headers_cpp(){
1211     log check_class_headers_cpp "$@"
1212     headers=$1
1213     classes=$2
1214     shift 2
1215     {
1216         for hdr in $headers; do
1217             echo "#include <$hdr>"
1218         done
1219         echo "int main(void) { "
1220         i=1
1221         for class in $classes; do
1222             echo "$class obj$i;"
1223             i=$(expr $i + 1)
1224         done
1225         echo "return 0; }"
1226     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1227 }
1228
1229 check_cpp_condition(){
1230     log check_cpp_condition "$@"
1231     header=$1
1232     condition=$2
1233     shift 2
1234     check_cpp "$@" <<EOF
1235 #include <$header>
1236 #if !($condition)
1237 #error "unsatisfied condition: $condition"
1238 #endif
1239 EOF
1240 }
1241
1242 test_cflags_cc(){
1243     log test_cflags_cc "$@"
1244     flags=$1
1245     header=$2
1246     condition=$3
1247     shift 3
1248     set -- $($cflags_filter "$flags")
1249     check_cc "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 check_lib(){
1258     log check_lib "$@"
1259     name="$1"
1260     headers="$2"
1261     funcs="$3"
1262     shift 3
1263     disable $name
1264     check_func_headers "$headers" "$funcs" "$@" &&
1265         enable $name && eval ${name}_extralibs="\$@"
1266 }
1267
1268 check_lib_cpp(){
1269     log check_lib_cpp "$@"
1270     name="$1"
1271     headers="$2"
1272     classes="$3"
1273     shift 3
1274     disable $name
1275     check_class_headers_cpp "$headers" "$classes" "$@" &&
1276         enable $name && eval ${name}_extralibs="\$@"
1277 }
1278
1279 test_pkg_config(){
1280     log test_pkg_config "$@"
1281     name="$1"
1282     pkg_version="$2"
1283     pkg="${2%% *}"
1284     headers="$3"
1285     funcs="$4"
1286     shift 4
1287     disable $name
1288     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1289     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1290     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1291     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1292         enable $name &&
1293         set_sanitized "${name}_cflags"    $pkg_cflags &&
1294         set_sanitized "${name}_extralibs" $pkg_libs
1295 }
1296
1297 check_pkg_config(){
1298     log check_pkg_config "$@"
1299     name="$1"
1300     test_pkg_config "$@" &&
1301         eval add_cflags \$${name}_cflags
1302 }
1303
1304 check_exec(){
1305     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1306 }
1307
1308 check_exec_crash(){
1309     log check_exec_crash "$@"
1310     code=$(cat)
1311
1312     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1313     # are safe but may not be available everywhere.  Thus we use
1314     # raise(SIGTERM) instead.  The check is run in a subshell so we
1315     # can redirect the "Terminated" message from the shell.  SIGBUS
1316     # is not defined by standard C so it is used conditionally.
1317
1318     (check_exec "$@") >> $logfile 2>&1 <<EOF
1319 #include <signal.h>
1320 static void sighandler(int sig){
1321     raise(SIGTERM);
1322 }
1323 int foo(void){
1324     $code
1325 }
1326 int (*func_ptr)(void) = foo;
1327 int main(void){
1328     signal(SIGILL, sighandler);
1329     signal(SIGFPE, sighandler);
1330     signal(SIGSEGV, sighandler);
1331 #ifdef SIGBUS
1332     signal(SIGBUS, sighandler);
1333 #endif
1334     return func_ptr();
1335 }
1336 EOF
1337 }
1338
1339 check_type(){
1340     log check_type "$@"
1341     headers=$1
1342     type=$2
1343     shift 2
1344     disable_sanitized "$type"
1345     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1346 }
1347
1348 check_struct(){
1349     log check_struct "$@"
1350     headers=$1
1351     struct=$2
1352     member=$3
1353     shift 3
1354     disable_sanitized "${struct}_${member}"
1355     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1356         enable_sanitized "${struct}_${member}"
1357 }
1358
1359 check_builtin(){
1360     log check_builtin "$@"
1361     name=$1
1362     headers=$2
1363     builtin=$3
1364     shift 3
1365     disable "$name"
1366     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1367 }
1368
1369 check_compile_assert(){
1370     log check_compile_assert "$@"
1371     name=$1
1372     headers=$2
1373     condition=$3
1374     shift 3
1375     disable "$name"
1376     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1377 }
1378
1379 require(){
1380     log require "$@"
1381     name_version="$1"
1382     name="${1%% *}"
1383     headers="$2"
1384     func="$3"
1385     shift 3
1386     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1387 }
1388
1389 require_cpp(){
1390     name="$1"
1391     headers="$2"
1392     classes="$3"
1393     shift 3
1394     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1395 }
1396
1397 require_header(){
1398     log require_header "$@"
1399     headers="$1"
1400     shift
1401     check_header "$headers" "$@" || die "ERROR: $headers not found"
1402 }
1403
1404 require_cpp_condition(){
1405     log require_cpp_condition "$@"
1406     header="$1"
1407     condition="$2"
1408     shift 2
1409     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1410 }
1411
1412 require_pkg_config(){
1413     log require_pkg_config "$@"
1414     pkg_version="$2"
1415     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1416 }
1417
1418 hostcc_e(){
1419     eval printf '%s\\n' $HOSTCC_E
1420 }
1421
1422 hostcc_o(){
1423     eval printf '%s\\n' $HOSTCC_O
1424 }
1425
1426 check_host_cc(){
1427     log check_host_cc "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1431 }
1432
1433 check_host_cpp(){
1434     log check_host_cpp "$@"
1435     cat > $TMPC
1436     log_file $TMPC
1437     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1438 }
1439
1440 check_host_cppflags(){
1441     log check_host_cppflags "$@"
1442     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1443 #include <stdlib.h>
1444 EOF
1445 }
1446
1447 check_host_cflags(){
1448     log check_host_cflags "$@"
1449     set -- $($host_cflags_filter "$@")
1450     check_host_cc "$@" <<EOF && append host_cflags "$@"
1451 int x;
1452 EOF
1453 }
1454
1455 check_host_cpp_condition(){
1456     log check_host_cpp_condition "$@"
1457     header=$1
1458     condition=$2
1459     shift 2
1460     check_host_cpp "$@" <<EOF
1461 #include <$header>
1462 #if !($condition)
1463 #error "unsatisfied condition: $condition"
1464 #endif
1465 EOF
1466 }
1467
1468 cp_if_changed(){
1469     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1470     mkdir -p "$(dirname $2)"
1471     cp -f "$1" "$2"
1472 }
1473
1474 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1475 # system-dependent things.
1476
1477 AVCODEC_COMPONENTS="
1478     bsfs
1479     decoders
1480     encoders
1481     hwaccels
1482     parsers
1483 "
1484
1485 AVDEVICE_COMPONENTS="
1486     indevs
1487     outdevs
1488 "
1489
1490 AVFILTER_COMPONENTS="
1491     filters
1492 "
1493
1494 AVFORMAT_COMPONENTS="
1495     demuxers
1496     muxers
1497     protocols
1498 "
1499
1500 COMPONENT_LIST="
1501     $AVCODEC_COMPONENTS
1502     $AVDEVICE_COMPONENTS
1503     $AVFILTER_COMPONENTS
1504     $AVFORMAT_COMPONENTS
1505 "
1506
1507 EXAMPLE_LIST="
1508     avio_dir_cmd_example
1509     avio_reading_example
1510     decode_audio_example
1511     decode_video_example
1512     demuxing_decoding_example
1513     encode_audio_example
1514     encode_video_example
1515     extract_mvs_example
1516     filter_audio_example
1517     filtering_audio_example
1518     filtering_video_example
1519     http_multiclient_example
1520     hw_decode_example
1521     metadata_example
1522     muxing_example
1523     qsvdec_example
1524     remuxing_example
1525     resampling_audio_example
1526     scaling_video_example
1527     transcode_aac_example
1528     transcoding_example
1529     vaapi_encode_example
1530 "
1531
1532 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1533     alsa
1534     appkit
1535     avfoundation
1536     bzlib
1537     coreimage
1538     iconv
1539     libxcb
1540     libxcb_shm
1541     libxcb_shape
1542     libxcb_xfixes
1543     lzma
1544     schannel
1545     sdl2
1546     securetransport
1547     sndio
1548     xlib
1549     zlib
1550 "
1551
1552 EXTERNAL_LIBRARY_GPL_LIST="
1553     avisynth
1554     frei0r
1555     libcdio
1556     librubberband
1557     libvidstab
1558     libx264
1559     libx265
1560     libxavs
1561     libxvid
1562 "
1563
1564 EXTERNAL_LIBRARY_NONFREE_LIST="
1565     decklink
1566     libndi_newtek
1567     libfdk_aac
1568     openssl
1569     libtls
1570 "
1571
1572 EXTERNAL_LIBRARY_VERSION3_LIST="
1573     gmp
1574     libopencore_amrnb
1575     libopencore_amrwb
1576     libvmaf
1577     libvo_amrwbenc
1578     rkmpp
1579 "
1580
1581 EXTERNAL_LIBRARY_GPLV3_LIST="
1582     libsmbclient
1583 "
1584
1585 EXTERNAL_LIBRARY_LIST="
1586     $EXTERNAL_LIBRARY_GPL_LIST
1587     $EXTERNAL_LIBRARY_NONFREE_LIST
1588     $EXTERNAL_LIBRARY_VERSION3_LIST
1589     $EXTERNAL_LIBRARY_GPLV3_LIST
1590     chromaprint
1591     gcrypt
1592     gnutls
1593     jni
1594     ladspa
1595     libass
1596     libbluray
1597     libbs2b
1598     libcaca
1599     libcelt
1600     libdc1394
1601     libdrm
1602     libflite
1603     libfontconfig
1604     libfreetype
1605     libfribidi
1606     libgme
1607     libgsm
1608     libiec61883
1609     libilbc
1610     libjack
1611     libkvazaar
1612     libmodplug
1613     libmp3lame
1614     libmysofa
1615     libopencv
1616     libopenh264
1617     libopenjpeg
1618     libopenmpt
1619     libopus
1620     libpulse
1621     librsvg
1622     librtmp
1623     libshine
1624     libsmbclient
1625     libsnappy
1626     libsoxr
1627     libspeex
1628     libssh
1629     libtesseract
1630     libtheora
1631     libtwolame
1632     libv4l2
1633     libvorbis
1634     libvpx
1635     libwavpack
1636     libwebp
1637     libxml2
1638     libzimg
1639     libzmq
1640     libzvbi
1641     lv2
1642     mediacodec
1643     openal
1644     opengl
1645 "
1646
1647 HWACCEL_AUTODETECT_LIBRARY_LIST="
1648     amf
1649     audiotoolbox
1650     crystalhd
1651     cuda
1652     cuvid
1653     d3d11va
1654     dxva2
1655     nvdec
1656     nvenc
1657     vaapi
1658     vdpau
1659     videotoolbox
1660     v4l2_m2m
1661     xvmc
1662 "
1663
1664 # catchall list of things that require external libs to link
1665 EXTRALIBS_LIST="
1666     cpu_init
1667     cws2fws
1668 "
1669
1670 HWACCEL_LIBRARY_NONFREE_LIST="
1671     cuda_sdk
1672     libnpp
1673 "
1674
1675 HWACCEL_LIBRARY_LIST="
1676     $HWACCEL_LIBRARY_NONFREE_LIST
1677     libmfx
1678     mmal
1679     omx
1680     opencl
1681 "
1682
1683 DOCUMENT_LIST="
1684     doc
1685     htmlpages
1686     manpages
1687     podpages
1688     txtpages
1689 "
1690
1691 FEATURE_LIST="
1692     ftrapv
1693     gray
1694     hardcoded_tables
1695     omx_rpi
1696     runtime_cpudetect
1697     safe_bitstream_reader
1698     shared
1699     small
1700     static
1701     swscale_alpha
1702 "
1703
1704 LIBRARY_LIST="
1705     avcodec
1706     avdevice
1707     avfilter
1708     avformat
1709     avresample
1710     avutil
1711     postproc
1712     swresample
1713     swscale
1714 "
1715
1716 LICENSE_LIST="
1717     gpl
1718     nonfree
1719     version3
1720 "
1721
1722 PROGRAM_LIST="
1723     ffplay
1724     ffprobe
1725     ffserver
1726     ffmpeg
1727 "
1728
1729 SUBSYSTEM_LIST="
1730     dct
1731     dwt
1732     error_resilience
1733     faan
1734     fast_unaligned
1735     fft
1736     lsp
1737     lzo
1738     mdct
1739     pixelutils
1740     network
1741     rdft
1742 "
1743
1744 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1745 CONFIG_LIST="
1746     $DOCUMENT_LIST
1747     $EXAMPLE_LIST
1748     $EXTERNAL_LIBRARY_LIST
1749     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1750     $HWACCEL_LIBRARY_LIST
1751     $HWACCEL_AUTODETECT_LIBRARY_LIST
1752     $FEATURE_LIST
1753     $LICENSE_LIST
1754     $LIBRARY_LIST
1755     $PROGRAM_LIST
1756     $SUBSYSTEM_LIST
1757     autodetect
1758     fontconfig
1759     linux_perf
1760     memory_poisoning
1761     neon_clobber_test
1762     ossfuzz
1763     pic
1764     thumb
1765     valgrind_backtrace
1766     xmm_clobber_test
1767     $COMPONENT_LIST
1768 "
1769
1770 THREADS_LIST="
1771     pthreads
1772     os2threads
1773     w32threads
1774 "
1775
1776 ATOMICS_LIST="
1777     atomics_gcc
1778     atomics_suncc
1779     atomics_win32
1780 "
1781
1782 AUTODETECT_LIBS="
1783     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1784     $HWACCEL_AUTODETECT_LIBRARY_LIST
1785     $THREADS_LIST
1786 "
1787
1788 ARCH_LIST="
1789     aarch64
1790     alpha
1791     arm
1792     avr32
1793     avr32_ap
1794     avr32_uc
1795     bfin
1796     ia64
1797     m68k
1798     mips
1799     mips64
1800     parisc
1801     ppc
1802     ppc64
1803     s390
1804     sh4
1805     sparc
1806     sparc64
1807     tilegx
1808     tilepro
1809     tomi
1810     x86
1811     x86_32
1812     x86_64
1813 "
1814
1815 ARCH_EXT_LIST_ARM="
1816     armv5te
1817     armv6
1818     armv6t2
1819     armv8
1820     neon
1821     vfp
1822     vfpv3
1823     setend
1824 "
1825
1826 ARCH_EXT_LIST_MIPS="
1827     mipsfpu
1828     mips32r2
1829     mips32r5
1830     mips64r2
1831     mips32r6
1832     mips64r6
1833     mipsdsp
1834     mipsdspr2
1835     msa
1836 "
1837
1838 ARCH_EXT_LIST_LOONGSON="
1839     loongson2
1840     loongson3
1841     mmi
1842 "
1843
1844 ARCH_EXT_LIST_X86_SIMD="
1845     aesni
1846     amd3dnow
1847     amd3dnowext
1848     avx
1849     avx2
1850     avx512
1851     fma3
1852     fma4
1853     mmx
1854     mmxext
1855     sse
1856     sse2
1857     sse3
1858     sse4
1859     sse42
1860     ssse3
1861     xop
1862 "
1863
1864 ARCH_EXT_LIST_PPC="
1865     altivec
1866     dcbzl
1867     ldbrx
1868     power8
1869     ppc4xx
1870     vsx
1871 "
1872
1873 ARCH_EXT_LIST_X86="
1874     $ARCH_EXT_LIST_X86_SIMD
1875     cpunop
1876     i686
1877 "
1878
1879 ARCH_EXT_LIST="
1880     $ARCH_EXT_LIST_ARM
1881     $ARCH_EXT_LIST_PPC
1882     $ARCH_EXT_LIST_X86
1883     $ARCH_EXT_LIST_MIPS
1884     $ARCH_EXT_LIST_LOONGSON
1885 "
1886
1887 ARCH_FEATURES="
1888     aligned_stack
1889     fast_64bit
1890     fast_clz
1891     fast_cmov
1892     local_aligned
1893     simd_align_16
1894     simd_align_32
1895     simd_align_64
1896 "
1897
1898 BUILTIN_LIST="
1899     atomic_cas_ptr
1900     machine_rw_barrier
1901     MemoryBarrier
1902     mm_empty
1903     rdtsc
1904     sarestart
1905     sem_timedwait
1906     sync_val_compare_and_swap
1907 "
1908 HAVE_LIST_CMDLINE="
1909     inline_asm
1910     symver
1911     x86asm
1912 "
1913
1914 HAVE_LIST_PUB="
1915     bigendian
1916     fast_unaligned
1917 "
1918
1919 HEADERS_LIST="
1920     arpa_inet_h
1921     asm_types_h
1922     cdio_paranoia_h
1923     cdio_paranoia_paranoia_h
1924     cuda_h
1925     dispatch_dispatch_h
1926     dev_bktr_ioctl_bt848_h
1927     dev_bktr_ioctl_meteor_h
1928     dev_ic_bt8xx_h
1929     dev_video_bktr_ioctl_bt848_h
1930     dev_video_meteor_ioctl_meteor_h
1931     direct_h
1932     dirent_h
1933     dxgidebug_h
1934     dxva_h
1935     ES2_gl_h
1936     gsm_h
1937     io_h
1938     machine_ioctl_bt848_h
1939     machine_ioctl_meteor_h
1940     malloc_h
1941     opencv2_core_core_c_h
1942     OpenGL_gl3_h
1943     poll_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FEATURES="
2001     atomics_native
2002     dos_paths
2003     libc_msvcrt
2004     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2005     section_data_rel_ro
2006     threads
2007     uwp
2008     winrt
2009 "
2010
2011 SYSTEM_FUNCS="
2012     access
2013     aligned_malloc
2014     arc4random
2015     clock_gettime
2016     closesocket
2017     CommandLineToArgvW
2018     fcntl
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     kbhit
2034     localtime_r
2035     lstat
2036     lzo1x_999_compress
2037     mach_absolute_time
2038     MapViewOfFile
2039     memalign
2040     mkstemp
2041     mmap
2042     mprotect
2043     nanosleep
2044     PeekNamedPipe
2045     posix_memalign
2046     pthread_cancel
2047     sched_getaffinity
2048     SecItemImport
2049     SetConsoleTextAttribute
2050     SetConsoleCtrlHandler
2051     setmode
2052     setrlimit
2053     Sleep
2054     strerror_r
2055     sysconf
2056     sysctl
2057     usleep
2058     UTGetOSTypeFromString
2059     VirtualAlloc
2060     wglGetProcAddress
2061 "
2062
2063 SYSTEM_LIBRARIES="
2064     vaapi_drm
2065     vaapi_x11
2066     vdpau_x11
2067     wincrypt
2068 "
2069
2070 TOOLCHAIN_FEATURES="
2071     as_arch_directive
2072     as_fpu_directive
2073     as_func
2074     as_object_arch
2075     asm_mod_q
2076     blocks_extension
2077     ebp_available
2078     ebx_available
2079     gnu_as
2080     gnu_windres
2081     ibm_asm
2082     inline_asm_direct_symbol_refs
2083     inline_asm_labels
2084     inline_asm_nonlocal_labels
2085     pragma_deprecated
2086     rsync_contimeout
2087     symver_asm_label
2088     symver_gnu_asm
2089     vfp_args
2090     xform_asm
2091     xmm_clobbers
2092 "
2093
2094 TYPES_LIST="
2095     CONDITION_VARIABLE_Ptr
2096     kCMVideoCodecType_HEVC
2097     socklen_t
2098     struct_addrinfo
2099     struct_group_source_req
2100     struct_ip_mreq_source
2101     struct_ipv6_mreq
2102     struct_msghdr_msg_flags
2103     struct_pollfd
2104     struct_rusage_ru_maxrss
2105     struct_sctp_event_subscribe
2106     struct_sockaddr_in6
2107     struct_sockaddr_sa_len
2108     struct_sockaddr_storage
2109     struct_stat_st_mtim_tv_nsec
2110     struct_v4l2_frmivalenum_discrete
2111 "
2112
2113 HAVE_LIST="
2114     $ARCH_EXT_LIST
2115     $(add_suffix _external $ARCH_EXT_LIST)
2116     $(add_suffix _inline   $ARCH_EXT_LIST)
2117     $ARCH_FEATURES
2118     $ATOMICS_LIST
2119     $BUILTIN_LIST
2120     $COMPLEX_FUNCS
2121     $HAVE_LIST_CMDLINE
2122     $HAVE_LIST_PUB
2123     $HEADERS_LIST
2124     $INTRINSICS_LIST
2125     $MATH_FUNCS
2126     $SYSTEM_FEATURES
2127     $SYSTEM_FUNCS
2128     $SYSTEM_LIBRARIES
2129     $THREADS_LIST
2130     $TOOLCHAIN_FEATURES
2131     $TYPES_LIST
2132     makeinfo
2133     makeinfo_html
2134     opencl_d3d11
2135     opencl_drm_arm
2136     opencl_dxva2
2137     opencl_vaapi_beignet
2138     opencl_vaapi_intel_media
2139     perl
2140     pod2man
2141     texi2html
2142 "
2143
2144 # options emitted with CONFIG_ prefix but not available on the command line
2145 CONFIG_EXTRA="
2146     aandcttables
2147     ac3dsp
2148     adts_header
2149     audio_frame_queue
2150     audiodsp
2151     blockdsp
2152     bswapdsp
2153     cabac
2154     cbs
2155     cbs_h264
2156     cbs_h265
2157     cbs_mpeg2
2158     dirac_parse
2159     dvprofile
2160     exif
2161     faandct
2162     faanidct
2163     fdctdsp
2164     flacdsp
2165     fmtconvert
2166     frame_thread_encoder
2167     g722dsp
2168     golomb
2169     gplv3
2170     h263dsp
2171     h264chroma
2172     h264dsp
2173     h264parse
2174     h264pred
2175     h264qpel
2176     hevcparse
2177     hpeldsp
2178     huffman
2179     huffyuvdsp
2180     huffyuvencdsp
2181     idctdsp
2182     iirfilter
2183     mdct15
2184     intrax8
2185     iso_media
2186     ividsp
2187     jpegtables
2188     lgplv3
2189     libx262
2190     llauddsp
2191     llviddsp
2192     llvidencdsp
2193     lpc
2194     lzf
2195     me_cmp
2196     mpeg_er
2197     mpegaudio
2198     mpegaudiodsp
2199     mpegaudioheader
2200     mpegvideo
2201     mpegvideoenc
2202     mss34dsp
2203     pixblockdsp
2204     qpeldsp
2205     qsv
2206     qsvdec
2207     qsvenc
2208     qsvvpp
2209     rangecoder
2210     riffdec
2211     riffenc
2212     rtpdec
2213     rtpenc_chain
2214     rv34dsp
2215     sinewin
2216     snappy
2217     srtp
2218     startcode
2219     texturedsp
2220     texturedspenc
2221     tpeldsp
2222     vaapi_1
2223     vaapi_encode
2224     vc1dsp
2225     videodsp
2226     vp3dsp
2227     vp56dsp
2228     vp8dsp
2229     wma_freqs
2230     wmv2dsp
2231 "
2232
2233 CMDLINE_SELECT="
2234     $ARCH_EXT_LIST
2235     $CONFIG_LIST
2236     $HAVE_LIST_CMDLINE
2237     $THREADS_LIST
2238     asm
2239     cross_compile
2240     debug
2241     extra_warnings
2242     logging
2243     lto
2244     optimizations
2245     rpath
2246     stripping
2247 "
2248
2249 PATHS_LIST="
2250     bindir
2251     datadir
2252     docdir
2253     incdir
2254     libdir
2255     mandir
2256     pkgconfigdir
2257     prefix
2258     shlibdir
2259     install_name_dir
2260 "
2261
2262 CMDLINE_SET="
2263     $PATHS_LIST
2264     ar
2265     arch
2266     as
2267     assert_level
2268     build_suffix
2269     cc
2270     objcc
2271     cpu
2272     cross_prefix
2273     custom_allocator
2274     cxx
2275     dep_cc
2276     doxygen
2277     env
2278     extra_version
2279     gas
2280     host_cc
2281     host_cflags
2282     host_extralibs
2283     host_ld
2284     host_ldflags
2285     host_os
2286     ignore_tests
2287     install
2288     ld
2289     ln_s
2290     logfile
2291     malloc_prefix
2292     nm
2293     optflags
2294     nvccflags
2295     pkg_config
2296     pkg_config_flags
2297     progs_suffix
2298     random_seed
2299     ranlib
2300     samples
2301     strip
2302     sws_max_filter_size
2303     sysinclude
2304     sysroot
2305     target_exec
2306     target_os
2307     target_path
2308     target_samples
2309     tempprefix
2310     toolchain
2311     valgrind
2312     x86asmexe
2313 "
2314
2315 CMDLINE_APPEND="
2316     extra_cflags
2317     extra_cxxflags
2318     extra_objcflags
2319     host_cppflags
2320 "
2321
2322 # code dependency declarations
2323
2324 # architecture extensions
2325
2326 armv5te_deps="arm"
2327 armv6_deps="arm"
2328 armv6t2_deps="arm"
2329 armv8_deps="aarch64"
2330 neon_deps_any="aarch64 arm"
2331 intrinsics_neon_deps="neon"
2332 vfp_deps_any="aarch64 arm"
2333 vfpv3_deps="vfp"
2334 setend_deps="arm"
2335
2336 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2337
2338 altivec_deps="ppc"
2339 dcbzl_deps="ppc"
2340 ldbrx_deps="ppc"
2341 ppc4xx_deps="ppc"
2342 vsx_deps="altivec"
2343 power8_deps="vsx"
2344
2345 loongson2_deps="mips"
2346 loongson3_deps="mips"
2347 mips32r2_deps="mips"
2348 mips32r5_deps="mips"
2349 mips32r6_deps="mips"
2350 mips64r2_deps="mips"
2351 mips64r6_deps="mips"
2352 mipsfpu_deps="mips"
2353 mipsdsp_deps="mips"
2354 mipsdspr2_deps="mips"
2355 mmi_deps="mips"
2356 msa_deps="mipsfpu"
2357
2358 cpunop_deps="i686"
2359 x86_64_select="i686"
2360 x86_64_suggest="fast_cmov"
2361
2362 amd3dnow_deps="mmx"
2363 amd3dnowext_deps="amd3dnow"
2364 i686_deps="x86"
2365 mmx_deps="x86"
2366 mmxext_deps="mmx"
2367 sse_deps="mmxext"
2368 sse2_deps="sse"
2369 sse3_deps="sse2"
2370 ssse3_deps="sse3"
2371 sse4_deps="ssse3"
2372 sse42_deps="sse4"
2373 aesni_deps="sse42"
2374 avx_deps="sse42"
2375 xop_deps="avx"
2376 fma3_deps="avx"
2377 fma4_deps="avx"
2378 avx2_deps="avx"
2379 avx512_deps="avx2"
2380
2381 mmx_external_deps="x86asm"
2382 mmx_inline_deps="inline_asm x86"
2383 mmx_suggest="mmx_external mmx_inline"
2384
2385 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2386     eval dep=\$${ext}_deps
2387     eval ${ext}_external_deps='"${dep}_external"'
2388     eval ${ext}_inline_deps='"${dep}_inline"'
2389     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2390 done
2391
2392 aligned_stack_if_any="aarch64 ppc x86"
2393 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2394 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2395 fast_unaligned_if_any="aarch64 ppc x86"
2396 simd_align_16_if_any="altivec neon sse"
2397 simd_align_32_if_any="avx"
2398 simd_align_64_if_any="avx512"
2399
2400 # system capabilities
2401 symver_if_any="symver_asm_label symver_gnu_asm"
2402 valgrind_backtrace_conflict="optimizations"
2403 valgrind_backtrace_deps="valgrind_valgrind_h"
2404
2405 # threading support
2406 atomics_gcc_if="sync_val_compare_and_swap"
2407 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2408 atomics_win32_if="MemoryBarrier"
2409 atomics_native_if_any="$ATOMICS_LIST"
2410 w32threads_deps="atomics_native"
2411 threads_if_any="$THREADS_LIST"
2412
2413 # subsystems
2414 cbs_h264_select="cbs golomb"
2415 cbs_h265_select="cbs golomb"
2416 cbs_mpeg2_select="cbs"
2417 dct_select="rdft"
2418 dirac_parse_select="golomb"
2419 error_resilience_select="me_cmp"
2420 faandct_deps="faan"
2421 faandct_select="fdctdsp"
2422 faanidct_deps="faan"
2423 faanidct_select="idctdsp"
2424 h264dsp_select="startcode"
2425 hevcparse_select="golomb"
2426 frame_thread_encoder_deps="encoders threads"
2427 intrax8_select="blockdsp idctdsp"
2428 mdct_select="fft"
2429 mdct15_select="fft"
2430 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2431 mpeg_er_select="error_resilience"
2432 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2433 mpegaudiodsp_select="dct"
2434 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2435 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2436 vc1dsp_select="h264chroma qpeldsp startcode"
2437 rdft_select="fft"
2438
2439 # decoders / encoders
2440 aac_decoder_select="adts_header mdct15 mdct sinewin"
2441 aac_fixed_decoder_select="mdct sinewin"
2442 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2443 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2444 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2445 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2446 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2447 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2448 adpcm_g722_decoder_select="g722dsp"
2449 adpcm_g722_encoder_select="g722dsp"
2450 aic_decoder_select="golomb idctdsp"
2451 alac_encoder_select="lpc"
2452 als_decoder_select="bswapdsp"
2453 amrnb_decoder_select="lsp"
2454 amrwb_decoder_select="lsp"
2455 amv_decoder_select="sp5x_decoder exif"
2456 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2457 ape_decoder_select="bswapdsp llauddsp"
2458 apng_decoder_deps="zlib"
2459 apng_encoder_deps="zlib"
2460 apng_encoder_select="llvidencdsp"
2461 aptx_decoder_select="audio_frame_queue"
2462 aptx_encoder_select="audio_frame_queue"
2463 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2464 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2465 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2466 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2467 atrac1_decoder_select="mdct sinewin"
2468 atrac3_decoder_select="mdct"
2469 atrac3p_decoder_select="mdct sinewin"
2470 avrn_decoder_select="exif jpegtables"
2471 bink_decoder_select="blockdsp hpeldsp"
2472 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2473 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2474 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2475 clearvideo_decoder_select="idctdsp"
2476 cllc_decoder_select="bswapdsp"
2477 comfortnoise_encoder_select="lpc"
2478 cook_decoder_select="audiodsp mdct sinewin"
2479 cscd_decoder_select="lzo"
2480 cscd_decoder_suggest="zlib"
2481 dca_decoder_select="mdct"
2482 dds_decoder_select="texturedsp"
2483 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2484 dnxhd_decoder_select="blockdsp idctdsp"
2485 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2486 dolby_e_decoder_select="mdct"
2487 dvvideo_decoder_select="dvprofile idctdsp"
2488 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2489 dxa_decoder_deps="zlib"
2490 dxv_decoder_select="lzf texturedsp"
2491 eac3_decoder_select="ac3_decoder"
2492 eac3_encoder_select="ac3_encoder"
2493 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2494 eatgq_decoder_select="aandcttables"
2495 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2496 exr_decoder_deps="zlib"
2497 ffv1_decoder_select="rangecoder"
2498 ffv1_encoder_select="rangecoder"
2499 ffvhuff_decoder_select="huffyuv_decoder"
2500 ffvhuff_encoder_select="huffyuv_encoder"
2501 fic_decoder_select="golomb"
2502 flac_decoder_select="flacdsp"
2503 flac_encoder_select="bswapdsp flacdsp lpc"
2504 flashsv2_decoder_deps="zlib"
2505 flashsv2_encoder_deps="zlib"
2506 flashsv_decoder_deps="zlib"
2507 flashsv_encoder_deps="zlib"
2508 flv_decoder_select="h263_decoder"
2509 flv_encoder_select="h263_encoder"
2510 fourxm_decoder_select="blockdsp bswapdsp"
2511 fraps_decoder_select="bswapdsp huffman"
2512 g2m_decoder_deps="zlib"
2513 g2m_decoder_select="blockdsp idctdsp jpegtables"
2514 g729_decoder_select="audiodsp"
2515 h261_decoder_select="mpegvideo"
2516 h261_encoder_select="aandcttables mpegvideoenc"
2517 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2518 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2519 h263i_decoder_select="h263_decoder"
2520 h263p_decoder_select="h263_decoder"
2521 h263p_encoder_select="h263_encoder"
2522 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2523 h264_decoder_suggest="error_resilience"
2524 hap_decoder_select="snappy texturedsp"
2525 hap_encoder_deps="libsnappy"
2526 hap_encoder_select="texturedspenc"
2527 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2528 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2529 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2530 iac_decoder_select="imc_decoder"
2531 imc_decoder_select="bswapdsp fft mdct sinewin"
2532 indeo3_decoder_select="hpeldsp"
2533 indeo4_decoder_select="ividsp"
2534 indeo5_decoder_select="ividsp"
2535 interplay_video_decoder_select="hpeldsp"
2536 jpegls_decoder_select="mjpeg_decoder"
2537 jv_decoder_select="blockdsp"
2538 lagarith_decoder_select="llviddsp"
2539 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2540 magicyuv_decoder_select="llviddsp"
2541 magicyuv_encoder_select="llvidencdsp"
2542 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2543 metasound_decoder_select="lsp mdct sinewin"
2544 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2545 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2546 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2547 mjpegb_decoder_select="mjpeg_decoder"
2548 mlp_decoder_select="mlp_parser"
2549 mlp_encoder_select="lpc"
2550 motionpixels_decoder_select="bswapdsp"
2551 mp1_decoder_select="mpegaudio"
2552 mp1float_decoder_select="mpegaudio"
2553 mp2_decoder_select="mpegaudio"
2554 mp2float_decoder_select="mpegaudio"
2555 mp3_decoder_select="mpegaudio"
2556 mp3adu_decoder_select="mpegaudio"
2557 mp3adufloat_decoder_select="mpegaudio"
2558 mp3float_decoder_select="mpegaudio"
2559 mp3on4_decoder_select="mpegaudio"
2560 mp3on4float_decoder_select="mpegaudio"
2561 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2562 mpc8_decoder_select="mpegaudiodsp"
2563 mpegvideo_decoder_select="mpegvideo"
2564 mpeg1video_decoder_select="mpegvideo"
2565 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2566 mpeg2video_decoder_select="mpegvideo"
2567 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2568 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2569 mpeg4_encoder_select="h263_encoder"
2570 msa1_decoder_select="mss34dsp"
2571 mscc_decoder_deps="zlib"
2572 msmpeg4v1_decoder_select="h263_decoder"
2573 msmpeg4v2_decoder_select="h263_decoder"
2574 msmpeg4v2_encoder_select="h263_encoder"
2575 msmpeg4v3_decoder_select="h263_decoder"
2576 msmpeg4v3_encoder_select="h263_encoder"
2577 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2578 mts2_decoder_select="mss34dsp"
2579 mxpeg_decoder_select="mjpeg_decoder"
2580 nellymoser_decoder_select="mdct sinewin"
2581 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2582 nuv_decoder_select="idctdsp lzo"
2583 on2avc_decoder_select="mdct"
2584 opus_decoder_deps="swresample"
2585 opus_decoder_select="mdct15"
2586 opus_encoder_select="audio_frame_queue mdct15"
2587 png_decoder_deps="zlib"
2588 png_encoder_deps="zlib"
2589 png_encoder_select="llvidencdsp"
2590 prores_decoder_select="blockdsp idctdsp"
2591 prores_encoder_select="fdctdsp"
2592 qcelp_decoder_select="lsp"
2593 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2594 ra_144_decoder_select="audiodsp"
2595 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2596 ralf_decoder_select="golomb"
2597 rawvideo_decoder_select="bswapdsp"
2598 rscc_decoder_deps="zlib"
2599 rtjpeg_decoder_select="me_cmp"
2600 rv10_decoder_select="h263_decoder"
2601 rv10_encoder_select="h263_encoder"
2602 rv20_decoder_select="h263_decoder"
2603 rv20_encoder_select="h263_encoder"
2604 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2605 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2606 screenpresso_decoder_deps="zlib"
2607 shorten_decoder_select="bswapdsp"
2608 sipr_decoder_select="lsp"
2609 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2610 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2611 sonic_decoder_select="golomb rangecoder"
2612 sonic_encoder_select="golomb rangecoder"
2613 sonic_ls_encoder_select="golomb rangecoder"
2614 sp5x_decoder_select="mjpeg_decoder"
2615 srgc_decoder_deps="zlib"
2616 svq1_decoder_select="hpeldsp"
2617 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2618 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2619 svq3_decoder_suggest="zlib"
2620 tak_decoder_select="audiodsp"
2621 tdsc_decoder_deps="zlib"
2622 tdsc_decoder_select="mjpeg_decoder"
2623 theora_decoder_select="vp3_decoder"
2624 thp_decoder_select="mjpeg_decoder"
2625 tiff_decoder_suggest="zlib lzma"
2626 tiff_encoder_suggest="zlib"
2627 truehd_decoder_select="mlp_parser"
2628 truehd_encoder_select="lpc"
2629 truemotion2_decoder_select="bswapdsp"
2630 truespeech_decoder_select="bswapdsp"
2631 tscc_decoder_deps="zlib"
2632 twinvq_decoder_select="mdct lsp sinewin"
2633 txd_decoder_select="texturedsp"
2634 utvideo_decoder_select="bswapdsp llviddsp"
2635 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2636 vble_decoder_select="llviddsp"
2637 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2638 vc1image_decoder_select="vc1_decoder"
2639 vorbis_decoder_select="mdct"
2640 vorbis_encoder_select="mdct"
2641 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2642 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2643 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2644 vp6a_decoder_select="vp6_decoder"
2645 vp6f_decoder_select="vp6_decoder"
2646 vp7_decoder_select="h264pred videodsp vp8dsp"
2647 vp8_decoder_select="h264pred videodsp vp8dsp"
2648 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2649 webp_decoder_select="vp8_decoder exif"
2650 wmalossless_decoder_select="llauddsp"
2651 wmapro_decoder_select="mdct sinewin wma_freqs"
2652 wmav1_decoder_select="mdct sinewin wma_freqs"
2653 wmav1_encoder_select="mdct sinewin wma_freqs"
2654 wmav2_decoder_select="mdct sinewin wma_freqs"
2655 wmav2_encoder_select="mdct sinewin wma_freqs"
2656 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2657 wmv1_decoder_select="h263_decoder"
2658 wmv1_encoder_select="h263_encoder"
2659 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2660 wmv2_encoder_select="h263_encoder wmv2dsp"
2661 wmv3_decoder_select="vc1_decoder"
2662 wmv3image_decoder_select="wmv3_decoder"
2663 xma1_decoder_select="wmapro_decoder"
2664 xma2_decoder_select="wmapro_decoder"
2665 zerocodec_decoder_deps="zlib"
2666 zlib_decoder_deps="zlib"
2667 zlib_encoder_deps="zlib"
2668 zmbv_decoder_deps="zlib"
2669 zmbv_encoder_deps="zlib"
2670
2671 # hardware accelerators
2672 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2673 cuda_deps_any="libdl LoadLibrary"
2674 cuvid_deps="cuda"
2675 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2676 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2677 nvdec_deps="cuda"
2678 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2679 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2680 xvmc_deps="X11_extensions_XvMClib_h"
2681
2682 h263_vaapi_hwaccel_deps="vaapi"
2683 h263_vaapi_hwaccel_select="h263_decoder"
2684 h263_videotoolbox_hwaccel_deps="videotoolbox"
2685 h263_videotoolbox_hwaccel_select="h263_decoder"
2686 h264_d3d11va_hwaccel_deps="d3d11va"
2687 h264_d3d11va_hwaccel_select="h264_decoder"
2688 h264_d3d11va2_hwaccel_deps="d3d11va"
2689 h264_d3d11va2_hwaccel_select="h264_decoder"
2690 h264_dxva2_hwaccel_deps="dxva2"
2691 h264_dxva2_hwaccel_select="h264_decoder"
2692 h264_nvdec_hwaccel_deps="nvdec"
2693 h264_nvdec_hwaccel_select="h264_decoder"
2694 h264_vaapi_hwaccel_deps="vaapi"
2695 h264_vaapi_hwaccel_select="h264_decoder"
2696 h264_vdpau_hwaccel_deps="vdpau"
2697 h264_vdpau_hwaccel_select="h264_decoder"
2698 h264_videotoolbox_hwaccel_deps="videotoolbox"
2699 h264_videotoolbox_hwaccel_select="h264_decoder"
2700 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2701 hevc_d3d11va_hwaccel_select="hevc_decoder"
2702 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2703 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2704 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2705 hevc_dxva2_hwaccel_select="hevc_decoder"
2706 hevc_nvdec_hwaccel_deps="nvdec"
2707 hevc_nvdec_hwaccel_select="hevc_decoder"
2708 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2709 hevc_vaapi_hwaccel_select="hevc_decoder"
2710 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2711 hevc_vdpau_hwaccel_select="hevc_decoder"
2712 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2713 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2714 mpeg_xvmc_hwaccel_deps="xvmc"
2715 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2716 mpeg1_nvdec_hwaccel_deps="nvdec"
2717 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_vdpau_hwaccel_deps="vdpau"
2719 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2721 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2722 mpeg1_xvmc_hwaccel_deps="xvmc"
2723 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2724 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2725 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2727 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_dxva2_hwaccel_deps="dxva2"
2729 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_nvdec_hwaccel_deps="nvdec"
2731 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_vaapi_hwaccel_deps="vaapi"
2733 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_vdpau_hwaccel_deps="vdpau"
2735 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_xvmc_hwaccel_deps="xvmc"
2739 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2740 mpeg4_nvdec_hwaccel_deps="nvdec"
2741 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2742 mpeg4_vaapi_hwaccel_deps="vaapi"
2743 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2744 mpeg4_vdpau_hwaccel_deps="vdpau"
2745 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2746 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2747 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2748 vc1_d3d11va_hwaccel_deps="d3d11va"
2749 vc1_d3d11va_hwaccel_select="vc1_decoder"
2750 vc1_d3d11va2_hwaccel_deps="d3d11va"
2751 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2752 vc1_dxva2_hwaccel_deps="dxva2"
2753 vc1_dxva2_hwaccel_select="vc1_decoder"
2754 vc1_nvdec_hwaccel_deps="nvdec"
2755 vc1_nvdec_hwaccel_select="vc1_decoder"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_nvdec_hwaccel_deps="nvdec"
2761 vp8_nvdec_hwaccel_select="vp8_decoder"
2762 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2763 vp8_vaapi_hwaccel_select="vp8_decoder"
2764 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va_hwaccel_select="vp9_decoder"
2766 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2768 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2769 vp9_dxva2_hwaccel_select="vp9_decoder"
2770 vp9_nvdec_hwaccel_deps="nvdec"
2771 vp9_nvdec_hwaccel_select="vp9_decoder"
2772 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2773 vp9_vaapi_hwaccel_select="vp9_decoder"
2774 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2775 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2776 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2777 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsv_deps="libmfx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 qsvvpp_select="qsv"
2788 vaapi_encode_deps="vaapi"
2789 v4l2_m2m_deps_any="linux_videodev2_h"
2790
2791 hwupload_cuda_filter_deps="cuda"
2792 scale_npp_filter_deps="cuda libnpp"
2793 scale_cuda_filter_deps="cuda_sdk"
2794 thumbnail_cuda_filter_deps="cuda_sdk"
2795
2796 amf_deps_any="libdl LoadLibrary"
2797 nvenc_deps="cuda"
2798 nvenc_deps_any="libdl LoadLibrary"
2799 nvenc_encoder_deps="nvenc"
2800
2801 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2803 h264_amf_encoder_deps="amf"
2804 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2805 h264_cuvid_decoder_deps="cuvid"
2806 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2807 h264_mediacodec_decoder_deps="mediacodec"
2808 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2809 h264_mmal_decoder_deps="mmal"
2810 h264_nvenc_encoder_deps="nvenc"
2811 h264_omx_encoder_deps="omx"
2812 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2813 h264_qsv_encoder_select="qsvenc"
2814 h264_rkmpp_decoder_deps="rkmpp"
2815 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2816 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2817 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2818 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 hevc_amf_encoder_deps="amf"
2821 hevc_cuvid_decoder_deps="cuvid"
2822 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2823 hevc_mediacodec_decoder_deps="mediacodec"
2824 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2825 hevc_nvenc_encoder_deps="nvenc"
2826 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2827 hevc_qsv_encoder_select="hevcparse qsvenc"
2828 hevc_rkmpp_decoder_deps="rkmpp"
2829 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2830 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2831 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2832 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2834 mjpeg_cuvid_decoder_deps="cuvid"
2835 mjpeg_qsv_encoder_deps="libmfx"
2836 mjpeg_qsv_encoder_select="qsvenc"
2837 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2838 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2839 mpeg1_cuvid_decoder_deps="cuvid"
2840 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2841 mpeg2_crystalhd_decoder_select="crystalhd"
2842 mpeg2_cuvid_decoder_deps="cuvid"
2843 mpeg2_mmal_decoder_deps="mmal"
2844 mpeg2_mediacodec_decoder_deps="mediacodec"
2845 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2846 mpeg2_qsv_encoder_select="qsvenc"
2847 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2848 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2849 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2850 mpeg4_crystalhd_decoder_select="crystalhd"
2851 mpeg4_cuvid_decoder_deps="cuvid"
2852 mpeg4_mediacodec_decoder_deps="mediacodec"
2853 mpeg4_mmal_decoder_deps="mmal"
2854 mpeg4_omx_encoder_deps="omx"
2855 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2857 msmpeg4_crystalhd_decoder_select="crystalhd"
2858 nvenc_h264_encoder_select="h264_nvenc_encoder"
2859 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2860 vc1_crystalhd_decoder_select="crystalhd"
2861 vc1_cuvid_decoder_deps="cuvid"
2862 vc1_mmal_decoder_deps="mmal"
2863 vc1_qsv_decoder_select="qsvdec vc1_parser"
2864 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2865 vp8_cuvid_decoder_deps="cuvid"
2866 vp8_mediacodec_decoder_deps="mediacodec"
2867 vp8_qsv_decoder_select="qsvdec vp8_parser"
2868 vp8_rkmpp_decoder_deps="rkmpp"
2869 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2870 vp8_vaapi_encoder_select="vaapi_encode"
2871 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2873 vp9_cuvid_decoder_deps="cuvid"
2874 vp9_mediacodec_decoder_deps="mediacodec"
2875 vp9_rkmpp_decoder_deps="rkmpp"
2876 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2877 vp9_vaapi_encoder_select="vaapi_encode"
2878 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2879 wmv3_crystalhd_decoder_select="crystalhd"
2880
2881 # parsers
2882 aac_parser_select="adts_header"
2883 h264_parser_select="golomb h264dsp h264parse"
2884 hevc_parser_select="hevcparse"
2885 mpegaudio_parser_select="mpegaudioheader"
2886 mpegvideo_parser_select="mpegvideo"
2887 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2888 vc1_parser_select="vc1dsp"
2889
2890 # bitstream_filters
2891 aac_adtstoasc_bsf_select="adts_header"
2892 h264_metadata_bsf_select="cbs_h264"
2893 h264_redundant_pps_bsf_select="cbs_h264"
2894 hevc_metadata_bsf_select="cbs_h265"
2895 mjpeg2jpeg_bsf_select="jpegtables"
2896 mpeg2_metadata_bsf_select="cbs_mpeg2"
2897 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2898
2899 # external libraries
2900 aac_at_decoder_deps="audiotoolbox"
2901 aac_at_decoder_select="aac_adtstoasc_bsf"
2902 ac3_at_decoder_deps="audiotoolbox"
2903 ac3_at_decoder_select="ac3_parser"
2904 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2905 alac_at_decoder_deps="audiotoolbox"
2906 amr_nb_at_decoder_deps="audiotoolbox"
2907 avisynth_deps_any="libdl LoadLibrary"
2908 avisynth_demuxer_deps="avisynth"
2909 avisynth_demuxer_select="riffdec"
2910 eac3_at_decoder_deps="audiotoolbox"
2911 eac3_at_decoder_select="ac3_parser"
2912 gsm_ms_at_decoder_deps="audiotoolbox"
2913 ilbc_at_decoder_deps="audiotoolbox"
2914 mp1_at_decoder_deps="audiotoolbox"
2915 mp2_at_decoder_deps="audiotoolbox"
2916 mp3_at_decoder_deps="audiotoolbox"
2917 mp1_at_decoder_select="mpegaudioheader"
2918 mp2_at_decoder_select="mpegaudioheader"
2919 mp3_at_decoder_select="mpegaudioheader"
2920 pcm_alaw_at_decoder_deps="audiotoolbox"
2921 pcm_mulaw_at_decoder_deps="audiotoolbox"
2922 qdmc_at_decoder_deps="audiotoolbox"
2923 qdm2_at_decoder_deps="audiotoolbox"
2924 aac_at_encoder_deps="audiotoolbox"
2925 aac_at_encoder_select="audio_frame_queue"
2926 alac_at_encoder_deps="audiotoolbox"
2927 alac_at_encoder_select="audio_frame_queue"
2928 ilbc_at_encoder_deps="audiotoolbox"
2929 ilbc_at_encoder_select="audio_frame_queue"
2930 pcm_alaw_at_encoder_deps="audiotoolbox"
2931 pcm_alaw_at_encoder_select="audio_frame_queue"
2932 pcm_mulaw_at_encoder_deps="audiotoolbox"
2933 pcm_mulaw_at_encoder_select="audio_frame_queue"
2934 chromaprint_muxer_deps="chromaprint"
2935 h264_videotoolbox_encoder_deps="pthreads"
2936 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2937 hevc_videotoolbox_encoder_deps="pthreads"
2938 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2939 libcelt_decoder_deps="libcelt"
2940 libfdk_aac_decoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_deps="libfdk_aac"
2942 libfdk_aac_encoder_select="audio_frame_queue"
2943 libgme_demuxer_deps="libgme"
2944 libgsm_decoder_deps="libgsm"
2945 libgsm_encoder_deps="libgsm"
2946 libgsm_ms_decoder_deps="libgsm"
2947 libgsm_ms_encoder_deps="libgsm"
2948 libilbc_decoder_deps="libilbc"
2949 libilbc_encoder_deps="libilbc"
2950 libkvazaar_encoder_deps="libkvazaar"
2951 libmodplug_demuxer_deps="libmodplug"
2952 libmp3lame_encoder_deps="libmp3lame"
2953 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2954 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2956 libopencore_amrnb_encoder_select="audio_frame_queue"
2957 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2958 libopenh264_decoder_deps="libopenh264"
2959 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2960 libopenh264_encoder_deps="libopenh264"
2961 libopenjpeg_decoder_deps="libopenjpeg"
2962 libopenjpeg_encoder_deps="libopenjpeg"
2963 libopenmpt_demuxer_deps="libopenmpt"
2964 libopus_decoder_deps="libopus"
2965 libopus_encoder_deps="libopus"
2966 libopus_encoder_select="audio_frame_queue"
2967 librsvg_decoder_deps="librsvg"
2968 libshine_encoder_deps="libshine"
2969 libshine_encoder_select="audio_frame_queue"
2970 libspeex_decoder_deps="libspeex"
2971 libspeex_encoder_deps="libspeex"
2972 libspeex_encoder_select="audio_frame_queue"
2973 libtheora_encoder_deps="libtheora"
2974 libtwolame_encoder_deps="libtwolame"
2975 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2976 libvorbis_decoder_deps="libvorbis"
2977 libvorbis_encoder_deps="libvorbis libvorbisenc"
2978 libvorbis_encoder_select="audio_frame_queue"
2979 libvpx_vp8_decoder_deps="libvpx"
2980 libvpx_vp8_encoder_deps="libvpx"
2981 libvpx_vp9_decoder_deps="libvpx"
2982 libvpx_vp9_encoder_deps="libvpx"
2983 libwavpack_encoder_deps="libwavpack"
2984 libwavpack_encoder_select="audio_frame_queue"
2985 libwebp_encoder_deps="libwebp"
2986 libwebp_anim_encoder_deps="libwebp"
2987 libx262_encoder_deps="libx262"
2988 libx264_encoder_deps="libx264"
2989 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2990 libx264rgb_encoder_select="libx264_encoder"
2991 libx265_encoder_deps="libx265"
2992 libxavs_encoder_deps="libxavs"
2993 libxvid_encoder_deps="libxvid"
2994 libzvbi_teletext_decoder_deps="libzvbi"
2995 videotoolbox_suggest="coreservices"
2996 videotoolbox_deps="corefoundation coremedia corevideo"
2997 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2998
2999 # demuxers / muxers
3000 ac3_demuxer_select="ac3_parser"
3001 aiff_muxer_select="iso_media"
3002 asf_demuxer_select="riffdec"
3003 asf_o_demuxer_select="riffdec"
3004 asf_muxer_select="riffenc"
3005 asf_stream_muxer_select="asf_muxer"
3006 avi_demuxer_select="iso_media riffdec exif"
3007 avi_muxer_select="riffenc"
3008 caf_demuxer_select="iso_media riffdec"
3009 caf_muxer_select="iso_media"
3010 dash_muxer_select="mp4_muxer"
3011 dash_demuxer_deps="libxml2"
3012 dirac_demuxer_select="dirac_parser"
3013 dts_demuxer_select="dca_parser"
3014 dtshd_demuxer_select="dca_parser"
3015 dv_demuxer_select="dvprofile"
3016 dv_muxer_select="dvprofile"
3017 dxa_demuxer_select="riffdec"
3018 eac3_demuxer_select="ac3_parser"
3019 f4v_muxer_select="mov_muxer"
3020 fifo_muxer_deps="threads"
3021 flac_demuxer_select="flac_parser"
3022 hds_muxer_select="flv_muxer"
3023 hls_muxer_select="mpegts_muxer"
3024 hls_muxer_suggest="gcrypt openssl"
3025 image2_alias_pix_demuxer_select="image2_demuxer"
3026 image2_brender_pix_demuxer_select="image2_demuxer"
3027 ipod_muxer_select="mov_muxer"
3028 ismv_muxer_select="mov_muxer"
3029 matroska_audio_muxer_select="matroska_muxer"
3030 matroska_demuxer_select="iso_media riffdec"
3031 matroska_demuxer_suggest="bzlib lzo zlib"
3032 matroska_muxer_select="iso_media riffenc"
3033 mmf_muxer_select="riffenc"
3034 mov_demuxer_select="iso_media riffdec"
3035 mov_demuxer_suggest="zlib"
3036 mov_muxer_select="iso_media riffenc rtpenc_chain"
3037 mp3_demuxer_select="mpegaudio_parser"
3038 mp3_muxer_select="mpegaudioheader"
3039 mp4_muxer_select="mov_muxer"
3040 mpegts_demuxer_select="iso_media"
3041 mpegts_muxer_select="adts_muxer latm_muxer"
3042 mpegtsraw_demuxer_select="mpegts_demuxer"
3043 mxf_d10_muxer_select="mxf_muxer"
3044 mxf_opatom_muxer_select="mxf_muxer"
3045 nut_muxer_select="riffenc"
3046 nuv_demuxer_select="riffdec"
3047 oga_muxer_select="ogg_muxer"
3048 ogg_demuxer_select="dirac_parse"
3049 ogv_muxer_select="ogg_muxer"
3050 opus_muxer_select="ogg_muxer"
3051 psp_muxer_select="mov_muxer"
3052 rtp_demuxer_select="sdp_demuxer"
3053 rtp_muxer_select="golomb"
3054 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3055 rtsp_demuxer_select="http_protocol rtpdec"
3056 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3057 sap_demuxer_select="sdp_demuxer"
3058 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3059 sdp_demuxer_select="rtpdec"
3060 smoothstreaming_muxer_select="ismv_muxer"
3061 spdif_demuxer_select="adts_header"
3062 spdif_muxer_select="adts_header"
3063 spx_muxer_select="ogg_muxer"
3064 swf_demuxer_suggest="zlib"
3065 tak_demuxer_select="tak_parser"
3066 tg2_muxer_select="mov_muxer"
3067 tgp_muxer_select="mov_muxer"
3068 vobsub_demuxer_select="mpegps_demuxer"
3069 w64_demuxer_select="wav_demuxer"
3070 w64_muxer_select="wav_muxer"
3071 wav_demuxer_select="riffdec"
3072 wav_muxer_select="riffenc"
3073 webm_muxer_select="iso_media riffenc"
3074 webm_dash_manifest_demuxer_select="matroska_demuxer"
3075 wtv_demuxer_select="mpegts_demuxer riffdec"
3076 wtv_muxer_select="mpegts_muxer riffenc"
3077 xmv_demuxer_select="riffdec"
3078 xwma_demuxer_select="riffdec"
3079
3080 # indevs / outdevs
3081 alsa_indev_deps="alsa"
3082 alsa_outdev_deps="alsa"
3083 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3084 avfoundation_indev_suggest="coregraphics applicationservices"
3085 avfoundation_indev_extralibs="-framework Foundation"
3086 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3087 caca_outdev_deps="libcaca"
3088 decklink_deps_any="libdl LoadLibrary"
3089 decklink_indev_deps="decklink threads"
3090 decklink_indev_extralibs="-lstdc++"
3091 decklink_outdev_deps="decklink threads"
3092 decklink_outdev_extralibs="-lstdc++"
3093 libndi_newtek_indev_deps="libndi_newtek"
3094 libndi_newtek_indev_extralibs="-lndi"
3095 libndi_newtek_outdev_deps="libndi_newtek"
3096 libndi_newtek_outdev_extralibs="-lndi"
3097 dshow_indev_deps="IBaseFilter"
3098 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3099 fbdev_indev_deps="linux_fb_h"
3100 fbdev_outdev_deps="linux_fb_h"
3101 gdigrab_indev_deps="CreateDIBSection"
3102 gdigrab_indev_extralibs="-lgdi32"
3103 gdigrab_indev_select="bmp_decoder"
3104 iec61883_indev_deps="libiec61883"
3105 jack_indev_deps="libjack"
3106 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3107 kmsgrab_indev_deps="libdrm"
3108 lavfi_indev_deps="avfilter"
3109 libcdio_indev_deps="libcdio"
3110 libdc1394_indev_deps="libdc1394"
3111 openal_indev_deps="openal"
3112 opengl_outdev_deps="opengl"
3113 oss_indev_deps_any="sys_soundcard_h"
3114 oss_outdev_deps_any="sys_soundcard_h"
3115 pulse_indev_deps="libpulse"
3116 pulse_outdev_deps="libpulse"
3117 sdl2_outdev_deps="sdl2"
3118 sndio_indev_deps="sndio"
3119 sndio_outdev_deps="sndio"
3120 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3121 v4l2_indev_suggest="libv4l2"
3122 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3123 v4l2_outdev_suggest="libv4l2"
3124 vfwcap_indev_deps="vfw32 vfwcap_defines"
3125 xcbgrab_indev_deps="libxcb"
3126 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3127 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3128 xv_outdev_extralibs="-lXv -lX11 -lXext"
3129
3130 # protocols
3131 async_protocol_deps="threads"
3132 bluray_protocol_deps="libbluray"
3133 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3134 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3135 ffrtmpcrypt_protocol_select="tcp_protocol"
3136 ffrtmphttp_protocol_conflict="librtmp_protocol"
3137 ffrtmphttp_protocol_select="http_protocol"
3138 ftp_protocol_select="tcp_protocol"
3139 gopher_protocol_select="network"
3140 http_protocol_select="tcp_protocol"
3141 http_protocol_suggest="zlib"
3142 httpproxy_protocol_select="tcp_protocol"
3143 httpproxy_protocol_suggest="zlib"
3144 https_protocol_select="tls_protocol"
3145 https_protocol_suggest="zlib"
3146 icecast_protocol_select="http_protocol"
3147 librtmp_protocol_deps="librtmp"
3148 librtmpe_protocol_deps="librtmp"
3149 librtmps_protocol_deps="librtmp"
3150 librtmpt_protocol_deps="librtmp"
3151 librtmpte_protocol_deps="librtmp"
3152 libsmbclient_protocol_deps="libsmbclient gplv3"
3153 libssh_protocol_deps="libssh"
3154 libtls_conflict="openssl gnutls"
3155 mmsh_protocol_select="http_protocol"
3156 mmst_protocol_select="network"
3157 rtmp_protocol_conflict="librtmp_protocol"
3158 rtmp_protocol_select="tcp_protocol"
3159 rtmp_protocol_suggest="zlib"
3160 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3161 rtmpe_protocol_suggest="zlib"
3162 rtmps_protocol_conflict="librtmp_protocol"
3163 rtmps_protocol_select="tls_protocol"
3164 rtmps_protocol_suggest="zlib"
3165 rtmpt_protocol_select="ffrtmphttp_protocol"
3166 rtmpt_protocol_suggest="zlib"
3167 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3168 rtmpte_protocol_suggest="zlib"
3169 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3170 rtmpts_protocol_suggest="zlib"
3171 rtp_protocol_select="udp_protocol"
3172 schannel_conflict="openssl gnutls libtls"
3173 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3174 sctp_protocol_select="network"
3175 securetransport_conflict="openssl gnutls libtls"
3176 srtp_protocol_select="rtp_protocol srtp"
3177 tcp_protocol_select="network"
3178 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3179 tls_protocol_select="tcp_protocol"
3180 udp_protocol_select="network"
3181 udplite_protocol_select="network"
3182 unix_protocol_deps="sys_un_h"
3183 unix_protocol_select="network"
3184
3185 # filters
3186 afftfilt_filter_deps="avcodec"
3187 afftfilt_filter_select="fft"
3188 afir_filter_deps="avcodec"
3189 afir_filter_select="fft"
3190 amovie_filter_deps="avcodec avformat"
3191 aresample_filter_deps="swresample"
3192 ass_filter_deps="libass"
3193 atempo_filter_deps="avcodec"
3194 atempo_filter_select="rdft"
3195 azmq_filter_deps="libzmq"
3196 blackframe_filter_deps="gpl"
3197 boxblur_filter_deps="gpl"
3198 bs2b_filter_deps="libbs2b"
3199 colormatrix_filter_deps="gpl"
3200 coreimage_filter_deps="coreimage appkit"
3201 coreimage_filter_extralibs="-framework OpenGL"
3202 coreimagesrc_filter_deps="coreimage appkit"
3203 coreimagesrc_filter_extralibs="-framework OpenGL"
3204 cover_rect_filter_deps="avcodec avformat gpl"
3205 cropdetect_filter_deps="gpl"
3206 deinterlace_qsv_filter_deps="libmfx"
3207 deinterlace_vaapi_filter_deps="vaapi"
3208 delogo_filter_deps="gpl"
3209 deshake_filter_select="pixelutils"
3210 drawtext_filter_deps="libfreetype"
3211 drawtext_filter_suggest="libfontconfig libfribidi"
3212 elbg_filter_deps="avcodec"
3213 eq_filter_deps="gpl"
3214 fftfilt_filter_deps="avcodec"
3215 fftfilt_filter_select="rdft"
3216 find_rect_filter_deps="avcodec avformat gpl"
3217 firequalizer_filter_deps="avcodec"
3218 firequalizer_filter_select="rdft"
3219 flite_filter_deps="libflite"
3220 framerate_filter_select="pixelutils"
3221 frei0r_filter_deps="frei0r libdl"
3222 frei0r_src_filter_deps="frei0r libdl"
3223 fspp_filter_deps="gpl"
3224 geq_filter_deps="gpl"
3225 histeq_filter_deps="gpl"
3226 hqdn3d_filter_deps="gpl"
3227 interlace_filter_deps="gpl"
3228 kerndeint_filter_deps="gpl"
3229 ladspa_filter_deps="ladspa libdl"
3230 lv2_filter_deps="lv2"
3231 mcdeint_filter_deps="avcodec gpl"
3232 movie_filter_deps="avcodec avformat"
3233 mpdecimate_filter_deps="gpl"
3234 mpdecimate_filter_select="pixelutils"
3235 mptestsrc_filter_deps="gpl"
3236 negate_filter_deps="lut_filter"
3237 nnedi_filter_deps="gpl"
3238 ocr_filter_deps="libtesseract"
3239 ocv_filter_deps="libopencv"
3240 overlay_opencl_filter_deps="opencl"
3241 overlay_qsv_filter_deps="libmfx"
3242 overlay_qsv_filter_select="qsvvpp"
3243 owdenoise_filter_deps="gpl"
3244 pan_filter_deps="swresample"
3245 perspective_filter_deps="gpl"
3246 phase_filter_deps="gpl"
3247 pp7_filter_deps="gpl"
3248 pp_filter_deps="gpl postproc"
3249 pullup_filter_deps="gpl"
3250 removelogo_filter_deps="avcodec avformat swscale"
3251 repeatfields_filter_deps="gpl"
3252 resample_filter_deps="avresample"
3253 rubberband_filter_deps="librubberband"
3254 sab_filter_deps="gpl swscale"
3255 scale2ref_filter_deps="swscale"
3256 scale_filter_deps="swscale"
3257 scale_qsv_filter_deps="libmfx"
3258 select_filter_select="pixelutils"
3259 showcqt_filter_deps="avcodec avformat swscale"
3260 showcqt_filter_suggest="libfontconfig libfreetype"
3261 showcqt_filter_select="fft"
3262 showfreqs_filter_deps="avcodec"
3263 showfreqs_filter_select="fft"
3264 showspectrum_filter_deps="avcodec"
3265 showspectrum_filter_select="fft"
3266 showspectrumpic_filter_deps="avcodec"
3267 showspectrumpic_filter_select="fft"
3268 signature_filter_deps="gpl avcodec avformat"
3269 smartblur_filter_deps="gpl swscale"
3270 sofalizer_filter_deps="libmysofa avcodec"
3271 sofalizer_filter_select="fft"
3272 spectrumsynth_filter_deps="avcodec"
3273 spectrumsynth_filter_select="fft"
3274 spp_filter_deps="gpl avcodec"
3275 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3276 stereo3d_filter_deps="gpl"
3277 subtitles_filter_deps="avformat avcodec libass"
3278 super2xsai_filter_deps="gpl"
3279 pixfmts_super2xsai_test_deps="super2xsai_filter"
3280 tinterlace_filter_deps="gpl"
3281 tinterlace_merge_test_deps="tinterlace_filter"
3282 tinterlace_pad_test_deps="tinterlace_filter"
3283 tonemap_filter_deps="const_nan"
3284 unsharp_opencl_filter_deps="opencl"
3285 uspp_filter_deps="gpl avcodec"
3286 vaguedenoiser_filter_deps="gpl"
3287 vidstabdetect_filter_deps="libvidstab"
3288 vidstabtransform_filter_deps="libvidstab"
3289 libvmaf_filter_deps="libvmaf"
3290 zmq_filter_deps="libzmq"
3291 zoompan_filter_deps="swscale"
3292 zscale_filter_deps="libzimg const_nan"
3293 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3294 vpp_qsv_filter_deps="libmfx"
3295 vpp_qsv_filter_select="qsvvpp"
3296
3297 # examples
3298 avio_dir_cmd_deps="avformat avutil"
3299 avio_reading_deps="avformat avcodec avutil"
3300 decode_audio_example_deps="avcodec avutil"
3301 decode_video_example_deps="avcodec avutil"
3302 demuxing_decoding_example_deps="avcodec avformat avutil"
3303 encode_audio_example_deps="avcodec avutil"
3304 encode_video_example_deps="avcodec avutil"
3305 extract_mvs_example_deps="avcodec avformat avutil"
3306 filter_audio_example_deps="avfilter avutil"
3307 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3308 filtering_video_example_deps="avfilter avcodec avformat avutil"
3309 http_multiclient_example_deps="avformat avutil fork"
3310 hw_decode_example_deps="avcodec avformat avutil"
3311 metadata_example_deps="avformat avutil"
3312 muxing_example_deps="avcodec avformat avutil swscale"
3313 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3314 remuxing_example_deps="avcodec avformat avutil"
3315 resampling_audio_example_deps="avutil swresample"
3316 scaling_video_example_deps="avutil swscale"
3317 transcode_aac_example_deps="avcodec avformat swresample"
3318 transcoding_example_deps="avfilter avcodec avformat avutil"
3319 vaapi_encode_example_deps="avcodec avutil"
3320
3321 # EXTRALIBS_LIST
3322 cpu_init_extralibs="pthreads_extralibs"
3323 cws2fws_extralibs="zlib_extralibs"
3324
3325 # libraries, in linking order
3326 avcodec_deps="avutil"
3327 avcodec_suggest="libm"
3328 avcodec_select="null_bsf"
3329 avdevice_deps="avformat avcodec avutil"
3330 avdevice_suggest="libm"
3331 avfilter_deps="avutil"
3332 avfilter_suggest="libm"
3333 avformat_deps="avcodec avutil"
3334 avformat_suggest="libm network zlib"
3335 avresample_deps="avutil"
3336 avresample_suggest="libm"
3337 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3338 postproc_deps="avutil gpl"
3339 postproc_suggest="libm"
3340 swresample_deps="avutil"
3341 swresample_suggest="libm libsoxr"
3342 swscale_deps="avutil"
3343 swscale_suggest="libm"
3344
3345 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3346 avfilter_extralibs="pthreads_extralibs"
3347 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3348
3349 # programs
3350 ffmpeg_deps="avcodec avfilter avformat swresample"
3351 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3352                null_filter
3353                trim_filter"
3354 ffmpeg_suggest="ole32 psapi shell32"
3355 ffplay_deps="avcodec avformat swscale swresample sdl2"
3356 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3357 ffplay_suggest="shell32"
3358 ffprobe_deps="avcodec avformat"
3359 ffprobe_suggest="shell32"
3360 ffserver_deps="avformat fork sarestart"
3361 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3362
3363 # documentation
3364 podpages_deps="perl"
3365 manpages_deps="perl pod2man"
3366 htmlpages_deps="perl"
3367 htmlpages_deps_any="makeinfo_html texi2html"
3368 txtpages_deps="perl makeinfo"
3369 doc_deps_any="manpages htmlpages podpages txtpages"
3370
3371 # default parameters
3372
3373 logfile="ffbuild/config.log"
3374
3375 # installation paths
3376 prefix_default="/usr/local"
3377 bindir_default='${prefix}/bin'
3378 datadir_default='${prefix}/share/ffmpeg'
3379 docdir_default='${prefix}/share/doc/ffmpeg'
3380 incdir_default='${prefix}/include'
3381 libdir_default='${prefix}/lib'
3382 mandir_default='${prefix}/share/man'
3383
3384 # toolchain
3385 ar_default="ar"
3386 cc_default="gcc"
3387 cxx_default="g++"
3388 host_cc_default="gcc"
3389 doxygen_default="doxygen"
3390 install="install"
3391 ln_s_default="ln -s -f"
3392 nm_default="nm -g"
3393 pkg_config_default=pkg-config
3394 ranlib_default="ranlib"
3395 strip_default="strip"
3396 version_script='--version-script'
3397 objformat="elf32"
3398 x86asmexe_default="nasm"
3399 windres_default="windres"
3400 nvcc_default="nvcc"
3401 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3402 striptype="direct"
3403
3404 # OS
3405 target_os_default=$(tolower $(uname -s))
3406 host_os=$target_os_default
3407
3408 # machine
3409 if test "$target_os_default" = aix; then
3410     arch_default=$(uname -p)
3411     strip_default="strip -X32_64"
3412 else
3413     arch_default=$(uname -m)
3414 fi
3415 cpu="generic"
3416 intrinsics="none"
3417
3418 # configurable options
3419 enable $PROGRAM_LIST
3420 enable $DOCUMENT_LIST
3421 enable $EXAMPLE_LIST
3422 enable $(filter_out avresample $LIBRARY_LIST)
3423 enable stripping
3424
3425 enable asm
3426 enable debug
3427 enable doc
3428 enable faan faandct faanidct
3429 enable optimizations
3430 enable runtime_cpudetect
3431 enable safe_bitstream_reader
3432 enable static
3433 enable swscale_alpha
3434 enable valgrind_backtrace
3435
3436 sws_max_filter_size_default=256
3437 set_default sws_max_filter_size
3438
3439 # internal components are enabled by default
3440 enable $EXTRALIBS_LIST
3441
3442 # Avoid external, non-system, libraries getting enabled by dependency resolution
3443 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3444
3445 # build settings
3446 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3447 LIBPREF="lib"
3448 LIBSUF=".a"
3449 FULLNAME='$(NAME)$(BUILDSUF)'
3450 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3451 SLIBPREF="lib"
3452 SLIBSUF=".so"
3453 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3454 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3455 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3456 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3457 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3458 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3459 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3460
3461 asflags_filter=echo
3462 cflags_filter=echo
3463 ldflags_filter=echo
3464
3465 AS_C='-c'
3466 AS_O='-o $@'
3467 CC_C='-c'
3468 CC_E='-E -o $@'
3469 CC_O='-o $@'
3470 CXX_C='-c'
3471 CXX_O='-o $@'
3472 OBJCC_C='-c'
3473 OBJCC_E='-E -o $@'
3474 OBJCC_O='-o $@'
3475 X86ASM_O='-o $@'
3476 LD_O='-o $@'
3477 LD_LIB='-l%'
3478 LD_PATH='-L'
3479 HOSTCC_C='-c'
3480 HOSTCC_E='-E -o $@'
3481 HOSTCC_O='-o $@'
3482 HOSTLD_O='-o $@'
3483 NVCC_C='-c'
3484 NVCC_O='-o $@'
3485
3486 host_extralibs='-lm'
3487 host_cflags_filter=echo
3488 host_ldflags_filter=echo
3489
3490 target_path='$(CURDIR)'
3491
3492 # since the object filename is not given with the -MM flag, the compiler
3493 # is only able to print the basename, and we must add the path ourselves
3494 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3495 DEPFLAGS='-MM'
3496
3497 mkdir -p ffbuild
3498
3499 # find source path
3500 if test -f configure; then
3501     source_path=.
3502 else
3503     source_path=$(cd $(dirname "$0"); pwd)
3504     case "$source_path" in
3505         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3506     esac
3507     test -e "$source_path/config.h" &&
3508         die "Out of tree builds are impossible with config.h in source dir."
3509 fi
3510
3511 for v in "$@"; do
3512     r=${v#*=}
3513     l=${v%"$r"}
3514     r=$(sh_quote "$r")
3515     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3516 done
3517
3518 find_things(){
3519     thing=$1
3520     pattern=$2
3521     file=$source_path/$3
3522     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3523 }
3524
3525 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3526 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3527 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3528 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3529 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3530 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3531 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3532 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3533
3534 find_things_extern(){
3535     thing=$1
3536     pattern=$2
3537     file=$source_path/$3
3538     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3539 }
3540
3541 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3542 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3543 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3544
3545 AVCODEC_COMPONENTS_LIST="
3546     $BSF_LIST
3547     $DECODER_LIST
3548     $ENCODER_LIST
3549     $HWACCEL_LIST
3550     $PARSER_LIST
3551 "
3552
3553 AVDEVICE_COMPONENTS_LIST="
3554     $INDEV_LIST
3555     $OUTDEV_LIST
3556 "
3557
3558 AVFILTER_COMPONENTS_LIST="
3559     $FILTER_LIST
3560 "
3561
3562 AVFORMAT_COMPONENTS_LIST="
3563     $DEMUXER_LIST
3564     $MUXER_LIST
3565     $PROTOCOL_LIST
3566 "
3567
3568 ALL_COMPONENTS="
3569     $AVCODEC_COMPONENTS_LIST
3570     $AVDEVICE_COMPONENTS_LIST
3571     $AVFILTER_COMPONENTS_LIST
3572     $AVFORMAT_COMPONENTS_LIST
3573 "
3574
3575 for n in $COMPONENT_LIST; do
3576     v=$(toupper ${n%s})_LIST
3577     eval enable \$$v
3578     eval ${n}_if_any="\$$v"
3579 done
3580
3581 enable $ARCH_EXT_LIST
3582
3583 die_unknown(){
3584     echo "Unknown option \"$1\"."
3585     echo "See $0 --help for available options."
3586     exit 1
3587 }
3588
3589 print_in_columns() {
3590     cols=$(expr $ncols / 24)
3591     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3592 }
3593
3594 show_list() {
3595     suffix=_$1
3596     shift
3597     echo $* | sed s/$suffix//g | print_in_columns
3598     exit 0
3599 }
3600
3601 rand_list(){
3602     IFS=', '
3603     set -- $*
3604     unset IFS
3605     for thing; do
3606         comp=${thing%:*}
3607         prob=${thing#$comp}
3608         prob=${prob#:}
3609         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3610         echo "prob ${prob:-0.5}"
3611         printf '%s\n' $comp
3612     done
3613 }
3614
3615 do_random(){
3616     action=$1
3617     shift
3618     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3619     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3620 }
3621
3622 for opt do
3623     optval="${opt#*=}"
3624     case "$opt" in
3625         --extra-ldflags=*)
3626             add_ldflags $optval
3627         ;;
3628         --extra-ldexeflags=*)
3629             add_ldexeflags $optval
3630         ;;
3631         --extra-ldsoflags=*)
3632             add_ldsoflags $optval
3633         ;;
3634         --extra-ldlibflags=*)
3635             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3636                  "removed in the future. Use --extra-ldsoflags instead."
3637             add_ldsoflags $optval
3638         ;;
3639         --extra-libs=*)
3640             add_extralibs $optval
3641         ;;
3642         --disable-devices)
3643             disable $INDEV_LIST $OUTDEV_LIST
3644         ;;
3645         --enable-debug=*)
3646             debuglevel="$optval"
3647         ;;
3648         --disable-programs)
3649             disable $PROGRAM_LIST
3650         ;;
3651         --disable-everything)
3652             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3653         ;;
3654         --disable-all)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656             disable $LIBRARY_LIST $PROGRAM_LIST doc
3657             enable avutil
3658         ;;
3659         --enable-random|--disable-random)
3660             action=${opt%%-random}
3661             do_random ${action#--} $COMPONENT_LIST
3662         ;;
3663         --enable-random=*|--disable-random=*)
3664             action=${opt%%-random=*}
3665             do_random ${action#--} $optval
3666         ;;
3667         --enable-sdl)
3668             enable sdl2
3669         ;;
3670         --enable-*=*|--disable-*=*)
3671             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3672             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3673             eval list=\$$(toupper $thing)_LIST
3674             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3675             list=$(filter "$name" $list)
3676             [ "$list" = "" ] && warn "Option $opt did not match anything"
3677             $action $list
3678         ;;
3679         --enable-yasm|--disable-yasm)
3680             warn "The ${opt} option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3682             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3683         ;;
3684         --yasmexe=*)
3685             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3686                  "removed in the future. Use --x86asmexe instead."
3687             x86asmexe="$optval"
3688         ;;
3689         --enable-?*|--disable-?*)
3690             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3691             if is_in $option $COMPONENT_LIST; then
3692                 test $action = disable && action=unset
3693                 eval $action \$$(toupper ${option%s})_LIST
3694             elif is_in $option $CMDLINE_SELECT; then
3695                 $action $option
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700         --list-*)
3701             NAME="${opt#--list-}"
3702             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3703             NAME=${NAME%s}
3704             eval show_list $NAME \$$(toupper $NAME)_LIST
3705         ;;
3706         --help|-h) show_help
3707         ;;
3708         --quiet|-q) quiet=yes
3709         ;;
3710         --fatal-warnings) enable fatal_warnings
3711         ;;
3712         --libfuzzer=*)
3713             libfuzzer_path="$optval"
3714         ;;
3715         *)
3716             optname="${opt%%=*}"
3717             optname="${optname#--}"
3718             optname=$(echo "$optname" | sed 's/-/_/g')
3719             if is_in $optname $CMDLINE_SET; then
3720                 eval $optname='$optval'
3721             elif is_in $optname $CMDLINE_APPEND; then
3722                 append $optname "$optval"
3723             else
3724                 die_unknown $opt
3725             fi
3726         ;;
3727     esac
3728 done
3729
3730 for e in $env; do
3731     eval "export $e"
3732 done
3733
3734 if disabled autodetect; then
3735
3736     # Unless iconv is explicitely disabled by the user, we still want to probe
3737     # for the iconv from the libc.
3738     disabled iconv || enable libc_iconv
3739
3740     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3741     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3742 fi
3743 # Mark specifically enabled, but normally autodetected libraries as requested.
3744 for lib in $AUTODETECT_LIBS; do
3745     enabled $lib && request $lib
3746 done
3747 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3748 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3749 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3750
3751 disabled logging && logfile=/dev/null
3752
3753 # command line configuration sanity checks
3754
3755 # we need to build at least one lib type
3756 if ! enabled_any static shared; then
3757     cat <<EOF
3758 At least one library type must be built.
3759 Specify --enable-static to build the static libraries or --enable-shared to
3760 build the shared libraries as well. To only build the shared libraries specify
3761 --disable-static in addition to --enable-shared.
3762 EOF
3763     exit 1
3764 fi
3765
3766 die_license_disabled() {
3767     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3768 }
3769
3770 die_license_disabled_gpl() {
3771     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3772 }
3773
3774 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3775 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3776
3777 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3778 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3779
3780 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3781
3782 enabled_all gnutls openssl &&
3783     die "GnuTLS and OpenSSL must not be enabled at the same time."
3784
3785 # Disable all the library-specific components if the library itself
3786 # is disabled, see AVCODEC_LIST and following _LIST variables.
3787
3788 disable_components(){
3789     disabled ${1} && disable $(
3790         eval components="\$$(toupper ${1})_COMPONENTS"
3791         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3792     )
3793 }
3794
3795 map 'disable_components $v' $LIBRARY_LIST
3796
3797 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3798 set >> $logfile
3799
3800 test -n "$valgrind" && toolchain="valgrind-memcheck"
3801
3802 enabled ossfuzz && {
3803     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3804     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3805 }
3806
3807 case "$toolchain" in
3808     *-asan)
3809         cc_default="${toolchain%-asan}"
3810         add_cflags  -fsanitize=address
3811         add_ldflags -fsanitize=address
3812     ;;
3813     *-msan)
3814         cc_default="${toolchain%-msan}"
3815         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3816         add_ldflags -fsanitize=memory
3817     ;;
3818     *-tsan)
3819         cc_default="${toolchain%-tsan}"
3820         add_cflags  -fsanitize=thread -fPIE
3821         add_ldflags -fsanitize=thread -pie
3822         case "$toolchain" in
3823             gcc-tsan)
3824                 add_cflags  -fPIC
3825                 add_ldflags -fPIC
3826                 ;;
3827         esac
3828     ;;
3829     *-usan)
3830         cc_default="${toolchain%-usan}"
3831         add_cflags  -fsanitize=undefined
3832         add_ldflags -fsanitize=undefined
3833     ;;
3834     valgrind-*)
3835         target_exec_default="valgrind"
3836         case "$toolchain" in
3837             valgrind-massif)
3838                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3839                 ;;
3840             valgrind-memcheck)
3841                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3842                 ;;
3843         esac
3844     ;;
3845     msvc)
3846         # Check whether the current MSVC version needs the C99 converter.
3847         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3848         # support enough of C99 to build ffmpeg. Default to the new
3849         # behaviour if the regexp was unable to match anything, since this
3850         # successfully parses the version number of existing supported
3851         # versions that require the converter (MSVC 2010 and 2012).
3852         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3853         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3854             cc_default="cl"
3855             cxx_default="cl"
3856         else
3857             cc_default="c99wrap cl"
3858             cxx_default="c99wrap cl"
3859         fi
3860         ld_default="$source_path/compat/windows/mslink"
3861         nm_default="dumpbin -symbols"
3862         ar_default="lib"
3863         case "$arch" in
3864         aarch64|arm64)
3865             as_default="armasm64"
3866             ;;
3867         arm*)
3868             as_default="armasm"
3869             ;;
3870         esac
3871         target_os_default="win32"
3872         # Use a relative path for TMPDIR. This makes sure all the
3873         # ffconf temp files are written with a relative path, avoiding
3874         # issues with msys/win32 path conversion for MSVC parameters
3875         # such as -Fo<file> or -out:<file>.
3876         TMPDIR=.
3877     ;;
3878     icl)
3879         cc_default="icl"
3880         ld_default="xilink"
3881         nm_default="dumpbin -symbols"
3882         ar_default="xilib"
3883         target_os_default="win32"
3884         TMPDIR=.
3885     ;;
3886     gcov)
3887         add_cflags  -fprofile-arcs -ftest-coverage
3888         add_ldflags -fprofile-arcs -ftest-coverage
3889     ;;
3890     llvm-cov)
3891         add_cflags -fprofile-arcs -ftest-coverage
3892         add_ldflags --coverage
3893     ;;
3894     hardened)
3895         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3896         add_cflags   -fno-strict-overflow -fstack-protector-all
3897         add_ldflags  -Wl,-z,relro -Wl,-z,now
3898         add_cflags   -fPIE
3899         add_ldexeflags -fPIE -pie
3900     ;;
3901     ?*)
3902         die "Unknown toolchain $toolchain"
3903     ;;
3904 esac
3905
3906 if test -n "$cross_prefix"; then
3907     test -n "$arch" && test -n "$target_os" ||
3908         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3909     enable cross_compile
3910 fi
3911
3912 ar_default="${cross_prefix}${ar_default}"
3913 cc_default="${cross_prefix}${cc_default}"
3914 cxx_default="${cross_prefix}${cxx_default}"
3915 nm_default="${cross_prefix}${nm_default}"
3916 pkg_config_default="${cross_prefix}${pkg_config_default}"
3917 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3918     ranlib_default="${cross_prefix}${ranlib_default} -D"
3919 else
3920     ranlib_default="${cross_prefix}${ranlib_default}"
3921 fi
3922 strip_default="${cross_prefix}${strip_default}"
3923 windres_default="${cross_prefix}${windres_default}"
3924
3925 sysinclude_default="${sysroot}/usr/include"
3926
3927 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3928     target_exec target_os x86asmexe nvcc
3929 enabled cross_compile || host_cc_default=$cc
3930 set_default host_cc
3931
3932 pkg_config_fail_message=""
3933 if ! $pkg_config --version >/dev/null 2>&1; then
3934     warn "$pkg_config not found, library detection may fail."
3935     pkg_config=false
3936 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3937     pkg_config_fail_message="
3938 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3939 fi
3940
3941 if test $doxygen != $doxygen_default && \
3942   ! $doxygen --version >/dev/null 2>&1; then
3943     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3944 fi
3945
3946 exesuf() {
3947     case $1 in
3948         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3949     esac
3950 }
3951
3952 EXESUF=$(exesuf $target_os)
3953 HOSTEXESUF=$(exesuf $host_os)
3954
3955 # set temporary file name
3956 : ${TMPDIR:=$TEMPDIR}
3957 : ${TMPDIR:=$TMP}
3958 : ${TMPDIR:=/tmp}
3959
3960 if [ -n "$tempprefix" ] ; then
3961     mktemp(){
3962         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3963         echo "$tmpname"
3964         mkdir "$tmpname"
3965     }
3966 elif ! check_cmd mktemp -u XXXXXX; then
3967     # simple replacement for missing mktemp
3968     # NOT SAFE FOR GENERAL USE
3969     mktemp(){
3970         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3971         echo "$tmpname"
3972         mkdir "$tmpname"
3973     }
3974 fi
3975
3976 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3977     die "Unable to create temporary directory in $TMPDIR."
3978
3979 tmpfile(){
3980     tmp="${FFTMPDIR}/test"$2
3981     (set -C; exec > $tmp) 2> /dev/null ||
3982         die "Unable to create temporary file in $FFTMPDIR."
3983     eval $1=$tmp
3984 }
3985
3986 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3987 trap 'exit 2' INT
3988
3989 tmpfile TMPASM .asm
3990 tmpfile TMPC   .c
3991 tmpfile TMPCPP .cpp
3992 tmpfile TMPE   $EXESUF
3993 tmpfile TMPH   .h
3994 tmpfile TMPM   .m
3995 tmpfile TMPO   .o
3996 tmpfile TMPS   .S
3997 tmpfile TMPSH  .sh
3998 tmpfile TMPV   .ver
3999
4000 unset -f mktemp
4001
4002 chmod +x $TMPE
4003
4004 # make sure we can execute files in $TMPDIR
4005 cat > $TMPSH 2>> $logfile <<EOF
4006 #! /bin/sh
4007 EOF
4008 chmod +x $TMPSH >> $logfile 2>&1
4009 if ! $TMPSH >> $logfile 2>&1; then
4010     cat <<EOF
4011 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4012 variable to another directory and make sure that it is not mounted noexec.
4013 EOF
4014     die "Sanity test failed."
4015 fi
4016
4017 armasm_flags(){
4018     for flag; do
4019         case $flag in
4020             # Filter out MSVC cl.exe options from cflags that shouldn't
4021             # be passed to gas-preprocessor
4022             -M[TD]*)                                            ;;
4023             *)                  echo $flag                      ;;
4024         esac
4025    done
4026 }
4027
4028 cparser_flags(){
4029     for flag; do
4030         case $flag in
4031             -Wno-switch)             echo -Wno-switch-enum ;;
4032             -Wno-format-zero-length) ;;
4033             -Wdisabled-optimization) ;;
4034             -Wno-pointer-sign)       echo -Wno-other ;;
4035             *)                       echo $flag ;;
4036         esac
4037     done
4038 }
4039
4040 msvc_common_flags(){
4041     for flag; do
4042         case $flag in
4043             # In addition to specifying certain flags under the compiler
4044             # specific filters, they must be specified here as well or else the
4045             # generic catch all at the bottom will print the original flag.
4046             -Wall)                ;;
4047             -Wextra)              ;;
4048             -std=c99)             ;;
4049             # Common flags
4050             -fomit-frame-pointer) ;;
4051             -g)                   echo -Z7 ;;
4052             -fno-math-errno)      ;;
4053             -fno-common)          ;;
4054             -fno-signed-zeros)    ;;
4055             -fPIC)                ;;
4056             -mthumb)              ;;
4057             -march=*)             ;;
4058             -lz)                  echo zlib.lib ;;
4059             -lx264)               echo libx264.lib ;;
4060             -lstdc++)             ;;
4061             -l*)                  echo ${flag#-l}.lib ;;
4062             -LARGEADDRESSAWARE)   echo $flag ;;
4063             -L*)                  echo -libpath:${flag#-L} ;;
4064             *)                    echo $flag ;;
4065         esac
4066     done
4067 }
4068
4069 msvc_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4074                                        -wd4554 ;;
4075             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4076                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4077                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4078                                        -wd4307 \
4079                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4080         esac
4081     done
4082 }
4083
4084 icl_flags(){
4085     msvc_common_flags "$@"
4086     for flag; do
4087         case $flag in
4088             # Despite what Intel's documentation says -Wall, which is supported
4089             # on Windows, does enable remarks so disable them here.
4090             -Wall)                echo $flag -Qdiag-disable:remark ;;
4091             -std=c99)             echo -Qstd=c99 ;;
4092             -flto)                echo -ipo ;;
4093         esac
4094     done
4095 }
4096
4097 icc_flags(){
4098     for flag; do
4099         case $flag in
4100             -flto)                echo -ipo ;;
4101             *)                    echo $flag ;;
4102         esac
4103     done
4104 }
4105
4106 suncc_flags(){
4107     for flag; do
4108         case $flag in
4109             -march=*|-mcpu=*)
4110                 case "${flag#*=}" in
4111                     native)                   echo -xtarget=native       ;;
4112                     v9|niagara)               echo -xarch=sparc          ;;
4113                     ultrasparc)               echo -xarch=sparcvis       ;;
4114                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4115                     i586|pentium)             echo -xchip=pentium        ;;
4116                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4117                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4118                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4119                     pentium4*)          echo -xtarget=pentium4           ;;
4120                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4121                     *-sse3)             echo -xarch=sse3                 ;;
4122                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4123                     bonnell)                   echo -xarch=ssse3         ;;
4124                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4125                     westmere)                  echo -xtarget=westmere    ;;
4126                     silvermont)                echo -xarch=sse4_2        ;;
4127                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4128                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4129                                                echo -xarch=avx           ;;
4130                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4131                     btver1)                    echo -xarch=amdsse4a      ;;
4132                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4133                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4134                     k8|opteron|athlon64|athlon-fx)
4135                                                echo -xarch=sse2a         ;;
4136                     athlon*)                   echo -xarch=pentium_proa  ;;
4137                 esac
4138                 ;;
4139             -std=c99)             echo -xc99              ;;
4140             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4141             -fPIC)                echo -KPIC -xcode=pic32 ;;
4142             -W*,*)                echo $flag              ;;
4143             -f*-*|-W*|-mimpure-text)                      ;;
4144             -shared)              echo -G                 ;;
4145             *)                    echo $flag              ;;
4146         esac
4147     done
4148 }
4149
4150 probe_cc(){
4151     pfx=$1
4152     _cc=$2
4153     first=$3
4154
4155     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4156     unset _ld_o _ldflags _ld_lib _ld_path
4157     unset _depflags _DEPCMD _DEPFLAGS
4158     _flags_filter=echo
4159
4160     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4161         true # no-op to avoid reading stdin in following checks
4162     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4163         _type=llvm_gcc
4164         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4165         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4166         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4167         _cflags_speed='-O3'
4168         _cflags_size='-Os'
4169     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4170         _type=gcc
4171         gcc_version=$($_cc --version | head -n1)
4172         gcc_basever=$($_cc -dumpversion)
4173         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4174         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4175         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4176         case $gcc_basever in
4177             2) ;;
4178             2.*) ;;
4179             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4180         esac
4181         if [ "$first" = true ]; then
4182             case $gcc_basever in
4183                 4.2*)
4184                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4185             esac
4186         fi
4187         _cflags_speed='-O3'
4188         _cflags_size='-Os'
4189     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4190         _type=icc
4191         _ident=$($_cc --version | head -n1)
4192         _depflags='-MMD'
4193         _cflags_speed='-O3'
4194         _cflags_size='-Os'
4195         _cflags_noopt='-O1'
4196         _flags_filter=icc_flags
4197     elif $_cc -v 2>&1 | grep -q xlc; then
4198         _type=xlc
4199         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4200         _cflags_speed='-O5'
4201         _cflags_size='-O5 -qcompact'
4202     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4203         test -d "$sysroot" || die "No valid sysroot specified."
4204         _type=armcc
4205         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4206         armcc_conf="$PWD/armcc.conf"
4207         $_cc --arm_linux_configure                 \
4208              --arm_linux_config_file="$armcc_conf" \
4209              --configure_sysroot="$sysroot"        \
4210              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4211              die "Error creating armcc configuration file."
4212         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4213         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4214         as_default="${cross_prefix}gcc"
4215         _depflags='-MMD'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Os'
4218     elif $_cc -v 2>&1 | grep -q clang; then
4219         _type=clang
4220         _ident=$($_cc --version 2>/dev/null | head -n1)
4221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4222         _cflags_speed='-O3'
4223         _cflags_size='-Oz'
4224     elif $_cc -V 2>&1 | grep -q Sun; then
4225         _type=suncc
4226         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4227         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4228         _DEPFLAGS='-xM1 -xc99'
4229         _ldflags='-std=c99'
4230         _cflags_speed='-O5'
4231         _cflags_size='-O5 -xspace'
4232         _flags_filter=suncc_flags
4233     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4234         _type=pathscale
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization'
4240     elif $_cc -v 2>&1 | grep -q Open64; then
4241         _type=open64
4242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4244         _cflags_speed='-O2'
4245         _cflags_size='-Os'
4246         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4247     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4248         _type=armasm
4249         _ident=$($_cc | head -n1)
4250         # 4509: "This form of conditional instruction is deprecated"
4251         _flags="-nologo -ignore 4509"
4252         _flags_filter=armasm_flags
4253     elif $_cc 2>&1 | grep -q Intel; then
4254         _type=icl
4255         _ident=$($_cc 2>&1 | head -n1)
4256         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4257         # Not only is O3 broken on 13.x+ but it is slower on all previous
4258         # versions (tested) as well.
4259         _cflags_speed="-O2"
4260         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4261         if $_cc 2>&1 | grep -q Linker; then
4262             _ld_o='-out:$@'
4263         else
4264             _ld_o='-Fe$@'
4265         fi
4266         _cc_o='-Fo$@'
4267         _cc_e='-P'
4268         _flags_filter=icl_flags
4269         _ld_lib='lib%.a'
4270         _ld_path='-libpath:'
4271         # -Qdiag-error to make icl error when seeing certain unknown arguments
4272         _flags='-nologo -Qdiag-error:4044,10157'
4273         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4274         # with MSVC which enables it by default.
4275         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4276         disable stripping
4277     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4278         # lld can emulate multiple different linkers; in ms link.exe mode,
4279         # the -? parameter gives the help output which contains an identifyable
4280         # string, while it gives an error in other modes.
4281         _type=lld-link
4282         # The link.exe mode doesn't have a switch for getting the version,
4283         # but we can force it back to gnu mode and get the version from there.
4284         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4285         _ld_o='-out:$@'
4286         _flags_filter=msvc_flags
4287         _ld_lib='lib%.a'
4288         _ld_path='-libpath:'
4289     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4290         _type=msvc
4291         _ident=$($_cc 2>&1 | head -n1)
4292         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4293         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4294         _cflags_speed="-O2"
4295         _cflags_size="-O1"
4296         _cflags_noopt="-O1"
4297         if $_cc -nologo- 2>&1 | grep -q Linker; then
4298             _ld_o='-out:$@'
4299         else
4300             _ld_o='-Fe$@'
4301         fi
4302         _cc_o='-Fo$@'
4303         _cc_e='-P -Fi$@'
4304         _flags_filter=msvc_flags
4305         _ld_lib='lib%.a'
4306         _ld_path='-libpath:'
4307         _flags='-nologo'
4308         disable stripping
4309     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4310         _type=cparser
4311         _ident=$($_cc --version | head -n1)
4312         _depflags='-MMD'
4313         _cflags_speed='-O4'
4314         _cflags_size='-O2'
4315         _flags_filter=cparser_flags
4316     fi
4317
4318     eval ${pfx}_type=\$_type
4319     eval ${pfx}_ident=\$_ident
4320 }
4321
4322 set_ccvars(){
4323     eval ${1}_C=\${_cc_c-\${${1}_C}}
4324     eval ${1}_E=\${_cc_e-\${${1}_E}}
4325     eval ${1}_O=\${_cc_o-\${${1}_O}}
4326
4327     if [ -n "$_depflags" ]; then
4328         eval ${1}_DEPFLAGS=\$_depflags
4329     else
4330         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4331         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4332         eval DEP${1}FLAGS=\$_flags
4333     fi
4334 }
4335
4336 probe_cc cc "$cc" "true"
4337 cflags_filter=$_flags_filter
4338 cflags_speed=$_cflags_speed
4339 cflags_size=$_cflags_size
4340 cflags_noopt=$_cflags_noopt
4341 add_cflags $_flags $_cflags
4342 cc_ldflags=$_ldflags
4343 set_ccvars CC
4344 set_ccvars CXX
4345
4346 probe_cc hostcc "$host_cc"
4347 host_cflags_filter=$_flags_filter
4348 host_cflags_speed=$_cflags_speed
4349 add_host_cflags  $_flags $_cflags
4350 set_ccvars HOSTCC
4351
4352 test -n "$cc_type" && enable $cc_type ||
4353     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4354
4355 : ${as_default:=$cc}
4356 : ${objcc_default:=$cc}
4357 : ${dep_cc_default:=$cc}
4358 : ${ld_default:=$cc}
4359 : ${host_ld_default:=$host_cc}
4360 set_default ar as objcc dep_cc ld ln_s host_ld windres
4361
4362 probe_cc as "$as"
4363 asflags_filter=$_flags_filter
4364 add_asflags $_flags $_cflags
4365 set_ccvars AS
4366
4367 probe_cc objcc "$objcc"
4368 objcflags_filter=$_flags_filter
4369 add_objcflags $_flags $_cflags
4370 set_ccvars OBJC
4371
4372 probe_cc ld "$ld"
4373 ldflags_filter=$_flags_filter
4374 add_ldflags $_flags $_ldflags
4375 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4376 LD_O=${_ld_o-$LD_O}
4377 LD_LIB=${_ld_lib-$LD_LIB}
4378 LD_PATH=${_ld_path-$LD_PATH}
4379
4380 probe_cc hostld "$host_ld"
4381 host_ldflags_filter=$_flags_filter
4382 add_host_ldflags $_flags $_ldflags
4383 HOSTLD_O=${_ld_o-$HOSTLD_O}
4384
4385 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4386     probe_cc depcc "$dep_cc"
4387     CCDEP=${_DEPCMD:-$DEPCMD}
4388     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4389     DEPCCFLAGS=$_flags
4390 fi
4391
4392 if $ar 2>&1 | grep -q Microsoft; then
4393     arflags="-nologo"
4394     ar_o='-out:$@'
4395 elif $ar 2>&1 | grep -q "\[D\] "; then
4396     arflags="rcD"
4397     ar_o='$@'
4398 else
4399     arflags="rc"
4400     ar_o='$@'
4401 fi
4402
4403 add_cflags $extra_cflags
4404 add_cxxflags $extra_cxxflags
4405 add_objcflags $extra_objcflags
4406 add_asflags $extra_cflags
4407
4408 if test -n "$sysroot"; then
4409     case "$cc_type" in
4410         gcc|llvm_gcc|clang)
4411             add_cppflags --sysroot="$sysroot"
4412             add_ldflags --sysroot="$sysroot"
4413         ;;
4414     esac
4415 fi
4416
4417 if test "$cpu" = host; then
4418     enabled cross_compile &&
4419         die "--cpu=host makes no sense when cross-compiling."
4420
4421     case "$cc_type" in
4422         gcc|llvm_gcc)
4423             check_native(){
4424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4425                 sed -n "/cc1.*$1=/{
4426                             s/.*$1=\\([^ ]*\\).*/\\1/
4427                             p
4428                             q
4429                         }" $TMPE
4430             }
4431             cpu=$(check_native -march || check_native -mcpu)
4432         ;;
4433         clang)
4434             check_native(){
4435                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4436                 sed -n "/cc1.*-target-cpu /{
4437                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4438                             p
4439                             q
4440                         }" $TMPE
4441             }
4442             cpu=$(check_native -march)
4443         ;;
4444     esac
4445
4446     test "${cpu:-host}" = host &&
4447         die "--cpu=host not supported with compiler $cc"
4448 fi
4449
4450 # Deal with common $arch aliases
4451 case "$arch" in
4452     aarch64|arm64)
4453         arch="aarch64"
4454     ;;
4455     arm*|iPad*|iPhone*)
4456         arch="arm"
4457     ;;
4458     mips*|IP*)
4459         case "$arch" in
4460         *el)
4461             add_cppflags -EL
4462             add_ldflags -EL
4463         ;;
4464         *eb)
4465             add_cppflags -EB
4466             add_ldflags -EB
4467         ;;
4468         esac
4469         arch="mips"
4470     ;;
4471     parisc*|hppa*)
4472         arch="parisc"
4473     ;;
4474     "Power Macintosh"|ppc*|powerpc*)
4475         arch="ppc"
4476     ;;
4477     s390|s390x)
4478         arch="s390"
4479     ;;
4480     sh4|sh)
4481         arch="sh4"
4482     ;;
4483     sun4*|sparc*)
4484         arch="sparc"
4485     ;;
4486     tilegx|tile-gx)
4487         arch="tilegx"
4488     ;;
4489     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4490         arch="x86"
4491     ;;
4492 esac
4493
4494 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4495 enable $arch
4496
4497 # Add processor-specific flags
4498 if enabled aarch64; then
4499
4500     case $cpu in
4501         armv*)
4502             cpuflags="-march=$cpu"
4503         ;;
4504         *)
4505             cpuflags="-mcpu=$cpu"
4506         ;;
4507     esac
4508
4509 elif enabled alpha; then
4510
4511     cpuflags="-mcpu=$cpu"
4512
4513 elif enabled arm; then
4514
4515     check_arm_arch() {
4516         check_cpp_condition stddef.h \
4517             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4518             $cpuflags
4519     }
4520
4521     probe_arm_arch() {
4522         if   check_arm_arch 4;        then echo armv4
4523         elif check_arm_arch 4T;       then echo armv4t
4524         elif check_arm_arch 5;        then echo armv5
4525         elif check_arm_arch 5E;       then echo armv5e
4526         elif check_arm_arch 5T;       then echo armv5t
4527         elif check_arm_arch 5TE;      then echo armv5te
4528         elif check_arm_arch 5TEJ;     then echo armv5te
4529         elif check_arm_arch 6;        then echo armv6
4530         elif check_arm_arch 6J;       then echo armv6j
4531         elif check_arm_arch 6K;       then echo armv6k
4532         elif check_arm_arch 6Z;       then echo armv6z
4533         elif check_arm_arch 6KZ;      then echo armv6zk
4534         elif check_arm_arch 6ZK;      then echo armv6zk
4535         elif check_arm_arch 6T2;      then echo armv6t2
4536         elif check_arm_arch 7;        then echo armv7
4537         elif check_arm_arch 7A  7_A;  then echo armv7-a
4538         elif check_arm_arch 7S;       then echo armv7-a
4539         elif check_arm_arch 7R  7_R;  then echo armv7-r
4540         elif check_arm_arch 7M  7_M;  then echo armv7-m
4541         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4542         elif check_arm_arch 8A  8_A;  then echo armv8-a
4543         fi
4544     }
4545
4546     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4547
4548     case $cpu in
4549         armv*)
4550             cpuflags="-march=$cpu"
4551             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4552         ;;
4553         *)
4554             cpuflags="-mcpu=$cpu"
4555             case $cpu in
4556                 cortex-a*)                               subarch=armv7a  ;;
4557                 cortex-r*)                               subarch=armv7r  ;;
4558                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4559                 arm11*)                                  subarch=armv6   ;;
4560                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4561                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4562                 *)                             subarch=$(probe_arm_arch) ;;
4563             esac
4564         ;;
4565     esac
4566
4567     case "$subarch" in
4568         armv5t*)    enable fast_clz                ;;
4569         armv[6-8]*)
4570             enable fast_clz
4571             disabled fast_unaligned || enable fast_unaligned
4572             ;;
4573     esac
4574
4575 elif enabled avr32; then
4576
4577     case $cpu in
4578         ap7[02]0[0-2])
4579             subarch="avr32_ap"
4580             cpuflags="-mpart=$cpu"
4581         ;;
4582         ap)
4583             subarch="avr32_ap"
4584             cpuflags="-march=$cpu"
4585         ;;
4586         uc3[ab]*)
4587             subarch="avr32_uc"
4588             cpuflags="-mcpu=$cpu"
4589         ;;
4590         uc)
4591             subarch="avr32_uc"
4592             cpuflags="-march=$cpu"
4593         ;;
4594     esac
4595
4596 elif enabled bfin; then
4597
4598     cpuflags="-mcpu=$cpu"
4599
4600 elif enabled mips; then
4601
4602     cpuflags="-march=$cpu"
4603
4604     if [ "$cpu" != "generic" ]; then
4605         disable mips32r2
4606         disable mips32r5
4607         disable mips64r2
4608         disable mips32r6
4609         disable mips64r6
4610         disable loongson2
4611         disable loongson3
4612
4613         case $cpu in
4614             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4615                 enable mips32r2
4616                 disable msa
4617             ;;
4618             p5600|i6400|p6600)
4619                 disable mipsdsp
4620                 disable mipsdspr2
4621             ;;
4622             loongson*)
4623                 enable loongson2
4624                 enable loongson3
4625                 enable local_aligned
4626                 enable simd_align_16
4627                 enable fast_64bit
4628                 enable fast_clz
4629                 enable fast_cmov
4630                 enable fast_unaligned
4631                 disable aligned_stack
4632                 disable mipsfpu
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635                 case $cpu in
4636                     loongson3*)
4637                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4638                     ;;
4639                     loongson2e)
4640                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4641                     ;;
4642                     loongson2f)
4643                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4644                     ;;
4645                 esac
4646             ;;
4647             *)
4648                 # Unknown CPU. Disable everything.
4649                 warn "unknown CPU. Disabling all MIPS optimizations."
4650                 disable mipsfpu
4651                 disable mipsdsp
4652                 disable mipsdspr2
4653                 disable msa
4654                 disable mmi
4655             ;;
4656         esac
4657
4658         case $cpu in
4659             24kc)
4660                 disable mipsfpu
4661                 disable mipsdsp
4662                 disable mipsdspr2
4663             ;;
4664             24kf*)
4665                 disable mipsdsp
4666                 disable mipsdspr2
4667             ;;
4668             24kec|34kc|1004kc)
4669                 disable mipsfpu
4670                 disable mipsdspr2
4671             ;;
4672             24kef*|34kf*|1004kf*)
4673                 disable mipsdspr2
4674             ;;
4675             74kc)
4676                 disable mipsfpu
4677             ;;
4678             p5600)
4679                 enable mips32r5
4680                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4681             ;;
4682             i6400)
4683                 enable mips64r6
4684                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4685             ;;
4686             p6600)
4687                 enable mips64r6
4688                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4689             ;;
4690         esac
4691     else
4692         # We do not disable anything. Is up to the user to disable the unwanted features.
4693         warn 'generic cpu selected'
4694     fi
4695
4696 elif enabled ppc; then
4697
4698     disable ldbrx
4699
4700     case $(tolower $cpu) in
4701         601|ppc601|powerpc601)
4702             cpuflags="-mcpu=601"
4703             disable altivec
4704         ;;
4705         603*|ppc603*|powerpc603*)
4706             cpuflags="-mcpu=603"
4707             disable altivec
4708         ;;
4709         604*|ppc604*|powerpc604*)
4710             cpuflags="-mcpu=604"
4711             disable altivec
4712         ;;
4713         g3|75*|ppc75*|powerpc75*)
4714             cpuflags="-mcpu=750"
4715             disable altivec
4716         ;;
4717         g4|745*|ppc745*|powerpc745*)
4718             cpuflags="-mcpu=7450"
4719             disable vsx
4720         ;;
4721         74*|ppc74*|powerpc74*)
4722             cpuflags="-mcpu=7400"
4723             disable vsx
4724         ;;
4725         g5|970|ppc970|powerpc970)
4726             cpuflags="-mcpu=970"
4727             disable vsx
4728         ;;
4729         power[3-6]*)
4730             cpuflags="-mcpu=$cpu"
4731             disable vsx
4732         ;;
4733         power[7-8]*)
4734             cpuflags="-mcpu=$cpu"
4735         ;;
4736         cell)
4737             cpuflags="-mcpu=cell"
4738             enable ldbrx
4739             disable vsx
4740         ;;
4741         e500mc)
4742             cpuflags="-mcpu=e500mc"
4743             disable altivec
4744         ;;
4745         e500v2)
4746             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4747             disable altivec
4748             disable dcbzl
4749         ;;
4750         e500)
4751             cpuflags="-mcpu=8540 -mhard-float"
4752             disable altivec
4753             disable dcbzl
4754         ;;
4755     esac
4756
4757 elif enabled sparc; then
4758
4759     case $cpu in
4760         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4761             cpuflags="-mcpu=$cpu"
4762         ;;
4763         ultrasparc*|niagara[234])
4764             cpuflags="-mcpu=$cpu"
4765         ;;
4766     esac
4767
4768 elif enabled x86; then
4769
4770     case $cpu in
4771         i[345]86|pentium)
4772             cpuflags="-march=$cpu"
4773             disable i686
4774             disable mmx
4775         ;;
4776         # targets that do NOT support nopl and conditional mov (cmov)
4777         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4778             cpuflags="-march=$cpu"
4779             disable i686
4780         ;;
4781         # targets that do support nopl and conditional mov (cmov)
4782         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4783         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4784         |amdfam10|barcelona|b[dt]ver*|znver*)
4785             cpuflags="-march=$cpu"
4786             enable i686
4787             enable fast_cmov
4788         ;;
4789         # targets that do support conditional mov but on which it's slow
4790         pentium4|pentium4m|prescott|nocona)
4791             cpuflags="-march=$cpu"
4792             enable i686
4793             disable fast_cmov
4794         ;;
4795     esac
4796
4797 fi
4798
4799 if [ "$cpu" != generic ]; then
4800     add_cflags  $cpuflags
4801     add_asflags $cpuflags
4802     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4803 fi
4804
4805 # compiler sanity check
4806 check_exec <<EOF
4807 int main(void){ return 0; }
4808 EOF
4809 if test "$?" != 0; then
4810     echo "$cc is unable to create an executable file."
4811     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4812         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4813         echo "Only do this if you know what cross compiling means."
4814     fi
4815     die "C compiler test failed."
4816 fi
4817
4818 add_cppflags -D_ISOC99_SOURCE
4819 add_cxxflags -D__STDC_CONSTANT_MACROS
4820 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4821
4822 # some compilers silently accept -std=c11, so we also need to check that the
4823 # version macro is defined properly
4824 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4825     add_cflags -std=c11 ||
4826     check_cflags -std=c99
4827
4828 check_cppflags -D_FILE_OFFSET_BITS=64
4829 check_cppflags -D_LARGEFILE_SOURCE
4830
4831 add_host_cppflags -D_ISOC99_SOURCE
4832 check_host_cflags -std=c99
4833 check_host_cflags -Wall
4834 check_host_cflags $host_cflags_speed
4835
4836 check_64bit(){
4837     arch32=$1
4838     arch64=$2
4839     expr=$3
4840     check_code cc "" "int test[2*($expr) - 1]" &&
4841         subarch=$arch64 || subarch=$arch32
4842     enable $subarch
4843 }
4844
4845 case "$arch" in
4846     aarch64|alpha|ia64)
4847         enabled shared && enable_weak pic
4848     ;;
4849     mips)
4850         check_64bit mips mips64 '_MIPS_SIM > 1'
4851         enabled shared && enable_weak pic
4852     ;;
4853     parisc)
4854         check_64bit parisc parisc64 'sizeof(void *) > 4'
4855         enabled shared && enable_weak pic
4856     ;;
4857     ppc)
4858         check_64bit ppc ppc64 'sizeof(void *) > 4'
4859         enabled shared && enable_weak pic
4860     ;;
4861     s390)
4862         check_64bit s390 s390x 'sizeof(void *) > 4'
4863         enabled shared && enable_weak pic
4864     ;;
4865     sparc)
4866         check_64bit sparc sparc64 'sizeof(void *) > 4'
4867         enabled shared && enable_weak pic
4868     ;;
4869     x86)
4870         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4871         # Treat x32 as x64 for now. Note it also needs pic if shared
4872         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4873             subarch=x86_64 && enable x86_64 && disable x86_32
4874         if enabled x86_64; then
4875             enabled shared && enable_weak pic
4876             objformat=elf64
4877         fi
4878     ;;
4879 esac
4880
4881 # OS specific
4882 case $target_os in
4883     aix)
4884         SHFLAGS=-shared
4885         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4886         enabled shared && add_ldflags -Wl,-brtl
4887         arflags='-Xany -r -c'
4888         ;;
4889     android)
4890         disable symver
4891         enable section_data_rel_ro
4892         SLIB_INSTALL_NAME='$(SLIBNAME)'
4893         SLIB_INSTALL_LINKS=
4894         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4895         ;;
4896     haiku)
4897         prefix_default="/boot/common"
4898         network_extralibs="-lnetwork"
4899         host_extralibs=
4900         ;;
4901     sunos)
4902         SHFLAGS='-shared -Wl,-h,$$(@F)'
4903         enabled x86 && append SHFLAGS -mimpure-text
4904         network_extralibs="-lsocket -lnsl"
4905         add_cppflags -D__EXTENSIONS__
4906         # When using suncc to build, the Solaris linker will mark
4907         # an executable with each instruction set encountered by
4908         # the Solaris assembler.  As our libraries contain their own
4909         # guards for processor-specific code, instead suppress
4910         # generation of the HWCAPS ELF section on Solaris x86 only.
4911         enabled_all suncc x86 &&
4912             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4913             add_ldflags -Wl,-M,mapfile
4914         nm_default='nm -P -g'
4915         version_script='-M'
4916         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4917         ;;
4918     netbsd)
4919         disable symver
4920         oss_indev_extralibs="-lossaudio"
4921         oss_outdev_extralibs="-lossaudio"
4922         enabled gcc || check_ldflags -Wl,-zmuldefs
4923         ;;