d40718f8427a2ae9b2aea6f729299b1d2ac95435
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl or libtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libass          enable libass subtitles rendering,
221                            needed for subtitles and ass filter [no]
222   --enable-libbluray       enable BluRay reading using libbluray [no]
223   --enable-libbs2b         enable bs2b DSP library [no]
224   --enable-libcaca         enable textual display using libcaca [no]
225   --enable-libcelt         enable CELT decoding via libcelt [no]
226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
227   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
228                            and libraw1394 [no]
229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
234   --enable-libgme          enable Game Music Emu via libgme [no]
235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
238   --enable-libjack         enable JACK audio sound server [no]
239   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
240   --enable-libmodplug      enable ModPlug via libmodplug [no]
241   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
244   --enable-libopencv       enable video filtering via libopencv [no]
245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
248   --enable-libopus         enable Opus de/encoding via libopus [no]
249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
250   --enable-librsvg         enable SVG rasterization via librsvg [no]
251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
256   --enable-libsoxr         enable Include libsoxr resampling [no]
257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
258   --enable-libssh          enable SFTP protocol via libssh [no]
259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
260   --enable-libtheora       enable Theora encoding via libtheora [no]
261   --enable-libtls          enable LibreSSL (via libtls), needed for https support
262                            if openssl or gnutls is not used [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --enable-lv2             enable LV2 audio filtering [no]
287   --disable-lzma           disable lzma [autodetect]
288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
290   --enable-mediacodec      enable Android MediaCodec support [no]
291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
292   --enable-openal          enable OpenAL 1.1 capture support [no]
293   --enable-opencl          enable OpenCL processing [no]
294   --enable-opengl          enable OpenGL rendering [no]
295   --enable-openssl         enable openssl, needed for https support
296                            if gnutls or libtls is not used [no]
297   --disable-sndio          disable sndio support [autodetect]
298   --disable-schannel       disable SChannel SSP, needed for TLS support on
299                            Windows if openssl and gnutls are not used [autodetect]
300   --disable-sdl2           disable sdl2 [autodetect]
301   --disable-securetransport disable Secure Transport, needed for TLS support
302                            on OSX if openssl and gnutls are not used [autodetect]
303   --disable-xlib           disable xlib [autodetect]
304   --disable-zlib           disable zlib [autodetect]
305
306   The following libraries provide various hardware acceleration features:
307   --disable-amf            disable AMF video encoding code [autodetect]
308   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
309   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
314   --enable-libdrm          enable DRM code (Linux) [no]
315   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
316   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
317   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
318   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
319   --disable-nvenc          disable Nvidia video encoding code [autodetect]
320   --enable-omx             enable OpenMAX IL code [no]
321   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
322   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
323   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
324   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
325   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
326   --disable-videotoolbox   disable VideoToolbox code [autodetect]
327
328 Toolchain options:
329   --arch=ARCH              select architecture [$arch]
330   --cpu=CPU                select the minimum required CPU (affects
331                            instruction selection, may crash on older CPUs)
332   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
333   --progs-suffix=SUFFIX    program name suffix []
334   --enable-cross-compile   assume a cross-compiler is used
335   --sysroot=PATH           root of cross-build tree
336   --sysinclude=PATH        location of cross-build system headers
337   --target-os=OS           compiler targets OS [$target_os]
338   --target-exec=CMD        command to run executables on target
339   --target-path=DIR        path to view of build directory on target
340   --target-samples=DIR     path to samples directory on target
341   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
342   --toolchain=NAME         set tool defaults according to NAME
343   --nm=NM                  use nm tool NM [$nm_default]
344   --ar=AR                  use archive tool AR [$ar_default]
345   --as=AS                  use assembler AS [$as_default]
346   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
347   --strip=STRIP            use strip tool STRIP [$strip_default]
348   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
349   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
350   --cc=CC                  use C compiler CC [$cc_default]
351   --cxx=CXX                use C compiler CXX [$cxx_default]
352   --objcc=OCC              use ObjC compiler OCC [$cc_default]
353   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
354   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
355   --ld=LD                  use linker LD [$ld_default]
356   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
357   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
358   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
359   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
360   --host-cc=HOSTCC         use host C compiler HOSTCC
361   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
362   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
363   --host-ld=HOSTLD         use host linker HOSTLD
364   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
365   --host-libs=HLIBS        use libs HLIBS when linking for host
366   --host-os=OS             compiler host OS [$target_os]
367   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
368   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
369   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
370   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
371   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
372   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
373   --extra-libs=ELIBS       add ELIBS [$ELIBS]
374   --extra-version=STRING   version string suffix []
375   --optflags=OPTFLAGS      override optimization-related compiler flags
376   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
377   --build-suffix=SUFFIX    library name suffix []
378   --enable-pic             build position-independent code
379   --enable-thumb           compile for Thumb instruction set
380   --enable-lto             use link-time optimization
381   --env="ENV=override"     override the environment variables
382
383 Advanced options (experts only):
384   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
385   --custom-allocator=NAME  use a supported custom allocator
386   --disable-symver         disable symbol versioning
387   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
388   --disable-safe-bitstream-reader
389                            disable buffer boundary checking in bitreaders
390                            (faster, but may crash)
391   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
392
393 Optimization options (experts only):
394   --disable-asm            disable all assembly optimizations
395   --disable-altivec        disable AltiVec optimizations
396   --disable-vsx            disable VSX optimizations
397   --disable-power8         disable POWER8 optimizations
398   --disable-amd3dnow       disable 3DNow! optimizations
399   --disable-amd3dnowext    disable 3DNow! extended optimizations
400   --disable-mmx            disable MMX optimizations
401   --disable-mmxext         disable MMXEXT optimizations
402   --disable-sse            disable SSE optimizations
403   --disable-sse2           disable SSE2 optimizations
404   --disable-sse3           disable SSE3 optimizations
405   --disable-ssse3          disable SSSE3 optimizations
406   --disable-sse4           disable SSE4 optimizations
407   --disable-sse42          disable SSE4.2 optimizations
408   --disable-avx            disable AVX optimizations
409   --disable-xop            disable XOP optimizations
410   --disable-fma3           disable FMA3 optimizations
411   --disable-fma4           disable FMA4 optimizations
412   --disable-avx2           disable AVX2 optimizations
413   --disable-avx512         disable AVX-512 optimizations
414   --disable-aesni          disable AESNI optimizations
415   --disable-armv5te        disable armv5te optimizations
416   --disable-armv6          disable armv6 optimizations
417   --disable-armv6t2        disable armv6t2 optimizations
418   --disable-vfp            disable VFP optimizations
419   --disable-neon           disable NEON optimizations
420   --disable-inline-asm     disable use of inline assembly
421   --disable-x86asm         disable use of standalone x86 assembly
422   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
423   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
424   --disable-msa            disable MSA optimizations
425   --disable-mipsfpu        disable floating point MIPS optimizations
426   --disable-mmi            disable Loongson SIMD optimizations
427   --disable-fast-unaligned consider unaligned accesses slow
428
429 Developer options (useful when working on FFmpeg itself):
430   --disable-debug          disable debugging symbols
431   --enable-debug=LEVEL     set the debug level [$debuglevel]
432   --disable-optimizations  disable compiler optimizations
433   --enable-extra-warnings  enable more compiler warnings
434   --disable-stripping      disable stripping of executables and shared libraries
435   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
436                            2 causes a slowdown at runtime.
437   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
438   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
439                            leaks and errors, using the specified valgrind binary.
440                            Cannot be combined with --target-exec
441   --enable-ftrapv          Trap arithmetic overflows
442   --samples=PATH           location of test samples for FATE, if not set use
443                            \$FATE_SAMPLES at make invocation time.
444   --enable-neon-clobber-test check NEON registers for clobbering (should be
445                            used only for debugging purposes)
446   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
447                            should be used only for debugging purposes)
448   --enable-random          randomly enable/disable components
449   --disable-random
450   --enable-random=LIST     randomly enable/disable specific components or
451   --disable-random=LIST    component groups. LIST is a comma-separated list
452                            of NAME[:PROB] entries where NAME is a component
453                            (group) and PROB the probability associated with
454                            NAME (default 0.5).
455   --random-seed=VALUE      seed value for --enable/disable-random
456   --disable-valgrind-backtrace do not print a backtrace under Valgrind
457                            (only applies to --disable-optimizations builds)
458   --enable-osfuzz          Enable building fuzzer tool
459   --libfuzzer=PATH         path to libfuzzer
460   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
461                            in the name) of tests whose result is ignored
462   --enable-linux-perf      enable Linux Performance Monitor API
463
464 NOTE: Object files are built at the place where configure is launched.
465 EOF
466   exit 0
467 }
468
469 if test -t 1 && which tput >/dev/null 2>&1; then
470     ncolors=$(tput colors)
471     if test -n "$ncolors" && test $ncolors -ge 8; then
472         bold_color=$(tput bold)
473         warn_color=$(tput setaf 3)
474         error_color=$(tput setaf 1)
475         reset_color=$(tput sgr0)
476     fi
477     # 72 used instead of 80 since that's the default of pr
478     ncols=$(tput cols)
479 fi
480 : ${ncols:=72}
481
482 log(){
483     echo "$@" >> $logfile
484 }
485
486 log_file(){
487     log BEGIN $1
488     pr -n -t $1 >> $logfile
489     log END $1
490 }
491
492 warn(){
493     log "WARNING: $*"
494     WARNINGS="${WARNINGS}WARNING: $*\n"
495 }
496
497 die(){
498     log "$@"
499     echo "$error_color$bold_color$@$reset_color"
500     cat <<EOF
501
502 If you think configure made a mistake, make sure you are using the latest
503 version from Git.  If the latest version fails, report the problem to the
504 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
505 EOF
506     if disabled logging; then
507         cat <<EOF
508 Rerun configure with logging enabled (do not use --disable-logging), and
509 include the log this produces with your report.
510 EOF
511     else
512         cat <<EOF
513 Include the log file "$logfile" produced by configure as this will help
514 solve the problem.
515 EOF
516     fi
517     exit 1
518 }
519
520 # Avoid locale weirdness, besides we really just want to translate ASCII.
521 toupper(){
522     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
523 }
524
525 tolower(){
526     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
527 }
528
529 c_escape(){
530     echo "$*" | sed 's/["\\]/\\\0/g'
531 }
532
533 sh_quote(){
534     v=$(echo "$1" | sed "s/'/'\\\\''/g")
535     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
536     echo "$v"
537 }
538
539 cleanws(){
540     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
541 }
542
543 filter(){
544     pat=$1
545     shift
546     for v; do
547         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
548     done
549 }
550
551 filter_out(){
552     pat=$1
553     shift
554     for v; do
555         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
556     done
557 }
558
559 map(){
560     m=$1
561     shift
562     for v; do eval $m; done
563 }
564
565 add_suffix(){
566     suffix=$1
567     shift
568     for v; do echo ${v}${suffix}; done
569 }
570
571 remove_suffix(){
572     suffix=$1
573     shift
574     for v; do echo ${v%$suffix}; done
575 }
576
577 set_all(){
578     value=$1
579     shift
580     for var in $*; do
581         eval $var=$value
582     done
583 }
584
585 set_weak(){
586     value=$1
587     shift
588     for var; do
589         eval : \${$var:=$value}
590     done
591 }
592
593 sanitize_var_name(){
594     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
595 }
596
597 set_sanitized(){
598     var=$1
599     shift
600     eval $(sanitize_var_name "$var")='$*'
601 }
602
603 get_sanitized(){
604     eval echo \$$(sanitize_var_name "$1")
605 }
606
607 pushvar(){
608     for pvar in $*; do
609         eval level=\${${pvar}_level:=0}
610         eval ${pvar}_${level}="\$$pvar"
611         eval ${pvar}_level=$(($level+1))
612     done
613 }
614
615 popvar(){
616     for pvar in $*; do
617         eval level=\${${pvar}_level:-0}
618         test $level = 0 && continue
619         eval level=$(($level-1))
620         eval $pvar="\${${pvar}_${level}}"
621         eval ${pvar}_level=$level
622         eval unset ${pvar}_${level}
623     done
624 }
625
626 request(){
627     for var in $*; do
628         eval ${var}_requested=yes
629         eval $var=
630     done
631 }
632
633 enable(){
634     set_all yes $*
635 }
636
637 disable(){
638     set_all no $*
639 }
640
641 enable_weak(){
642     set_weak yes $*
643 }
644
645 disable_weak(){
646     set_weak no $*
647 }
648
649 enable_sanitized(){
650     for var; do
651         enable $(sanitize_var_name $var)
652     done
653 }
654
655 disable_sanitized(){
656     for var; do
657         disable $(sanitize_var_name $var)
658     done
659 }
660
661 do_enable_deep(){
662     for var; do
663         enabled $var && continue
664         eval sel="\$${var}_select"
665         eval sgs="\$${var}_suggest"
666         pushvar var sgs
667         enable_deep $sel
668         popvar sgs
669         enable_deep_weak $sgs
670         popvar var
671     done
672 }
673
674 enable_deep(){
675     do_enable_deep $*
676     enable $*
677 }
678
679 enable_deep_weak(){
680     for var; do
681         disabled $var && continue
682         pushvar var
683         do_enable_deep $var
684         popvar var
685         enable_weak $var
686     done
687 }
688
689 requested(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}_requested" $op "xyes"
692 }
693
694 enabled(){
695     test "${1#!}" = "$1" && op="=" || op="!="
696     eval test "x\$${1#!}" $op "xyes"
697 }
698
699 disabled(){
700     test "${1#!}" = "$1" && op="=" || op="!="
701     eval test "x\$${1#!}" $op "xno"
702 }
703
704 enabled_all(){
705     for opt; do
706         enabled $opt || return 1
707     done
708 }
709
710 disabled_all(){
711     for opt; do
712         disabled $opt || return 1
713     done
714 }
715
716 enabled_any(){
717     for opt; do
718         enabled $opt && return 0
719     done
720 }
721
722 disabled_any(){
723     for opt; do
724         disabled $opt && return 0
725     done
726     return 1
727 }
728
729 set_default(){
730     for opt; do
731         eval : \${$opt:=\$${opt}_default}
732     done
733 }
734
735 is_in(){
736     value=$1
737     shift
738     for var in $*; do
739         [ $var = $value ] && return 0
740     done
741     return 1
742 }
743
744 check_deps(){
745     for cfg; do
746         enabled ${cfg}_checking && die "Circular dependency for $cfg."
747         disabled ${cfg}_checking && continue
748         enable ${cfg}_checking
749
750         eval dep_all="\$${cfg}_deps"
751         eval dep_any="\$${cfg}_deps_any"
752         eval dep_con="\$${cfg}_conflict"
753         eval dep_sel="\$${cfg}_select"
754         eval dep_sgs="\$${cfg}_suggest"
755         eval dep_ifa="\$${cfg}_if"
756         eval dep_ifn="\$${cfg}_if_any"
757
758         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
759         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
760         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
761
762         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
763         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
764         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
765         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
766         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
767         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
768
769         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
770
771         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
772             # filter out library deps, these do not belong in extralibs
773             is_in $dep $LIBRARY_LIST && continue
774             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
775         done
776
777         disable ${cfg}_checking
778     done
779 }
780
781 print_config(){
782     pfx=$1
783     files=$2
784     shift 2
785     map 'eval echo "$v \${$v:-no}"' "$@" |
786     awk "BEGIN { split(\"$files\", files) }
787         {
788             c = \"$pfx\" toupper(\$1);
789             v = \$2;
790             sub(/yes/, 1, v);
791             sub(/no/,  0, v);
792             for (f in files) {
793                 file = files[f];
794                 if (file ~ /\\.h\$/) {
795                     printf(\"#define %s %d\\n\", c, v) >>file;
796                 } else if (file ~ /\\.asm\$/) {
797                     printf(\"%%define %s %d\\n\", c, v) >>file;
798                 } else if (file ~ /\\.mak\$/) {
799                     n = -v ? \"\" : \"!\";
800                     printf(\"%s%s=yes\\n\", n, c) >>file;
801                 } else if (file ~ /\\.texi\$/) {
802                     pre = -v ? \"\" : \"@c \";
803                     yesno = \$2;
804                     c2 = tolower(c);
805                     gsub(/_/, \"-\", c2);
806                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
807                 }
808             }
809         }"
810 }
811
812 print_enabled(){
813     suf=$1
814     shift
815     for v; do
816         enabled $v && printf "%s\n" ${v%$suf}
817     done
818 }
819
820 append(){
821     var=$1
822     shift
823     eval "$var=\"\$$var $*\""
824 }
825
826 prepend(){
827     var=$1
828     shift
829     eval "$var=\"$* \$$var\""
830 }
831
832 unique(){
833     var=$1
834     uniq_list=""
835     for tok in $(eval echo \$$var); do
836         uniq_list="$(filter_out $tok $uniq_list) $tok"
837     done
838     eval "$var=\"${uniq_list}\""
839 }
840
841 resolve(){
842     var=$1
843     tmpvar=
844     for entry in $(eval echo \$$var); do
845         tmpvar="$tmpvar $(eval echo \$${entry})"
846     done
847     eval "$var=\"${tmpvar}\""
848 }
849
850 add_cppflags(){
851     append CPPFLAGS "$@"
852 }
853
854 add_cflags(){
855     append CFLAGS $($cflags_filter "$@")
856 }
857
858 add_cflags_headers(){
859     append CFLAGS_HEADERS $($cflags_filter "$@")
860 }
861
862 add_cxxflags(){
863     append CXXFLAGS $($cflags_filter "$@")
864 }
865
866 add_asflags(){
867     append ASFLAGS $($asflags_filter "$@")
868 }
869
870 add_objcflags(){
871     append OBJCFLAGS $($objcflags_filter "$@")
872 }
873
874 add_ldflags(){
875     append LDFLAGS $($ldflags_filter "$@")
876 }
877
878 add_ldexeflags(){
879     append LDEXEFLAGS $($ldflags_filter "$@")
880 }
881
882 add_ldsoflags(){
883     append LDSOFLAGS $($ldflags_filter "$@")
884 }
885
886 add_stripflags(){
887     append ASMSTRIPFLAGS "$@"
888 }
889
890 add_extralibs(){
891     prepend extralibs $($ldflags_filter "$@")
892 }
893
894 add_host_cppflags(){
895     append host_cppflags "$@"
896 }
897
898 add_host_cflags(){
899     append host_cflags $($host_cflags_filter "$@")
900 }
901
902 add_host_ldflags(){
903     append host_ldflags $($host_ldflags_filter "$@")
904 }
905
906 add_compat(){
907     append compat_objs $1
908     shift
909     map 'add_cppflags -D$v' "$@"
910 }
911
912 check_cmd(){
913     log "$@"
914     "$@" >> $logfile 2>&1
915 }
916
917 check_stat(){
918     log check_stat "$@"
919     stat "$1" >> $logfile 2>&1
920 }
921
922 cc_o(){
923     eval printf '%s\\n' $CC_O
924 }
925
926 cc_e(){
927     eval printf '%s\\n' $CC_E
928 }
929
930 check_cc(){
931     log check_cc "$@"
932     cat > $TMPC
933     log_file $TMPC
934     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
935 }
936
937 check_cxx(){
938     log check_cxx "$@"
939     cat > $TMPCPP
940     log_file $TMPCPP
941     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
942 }
943
944 check_objcc(){
945     log check_objcc "$@"
946     cat > $TMPM
947     log_file $TMPM
948     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
949 }
950
951 check_cpp(){
952     log check_cpp "$@"
953     cat > $TMPC
954     log_file $TMPC
955     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
956 }
957
958 as_o(){
959     eval printf '%s\\n' $AS_O
960 }
961
962 check_as(){
963     log check_as "$@"
964     cat > $TMPS
965     log_file $TMPS
966     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
967 }
968
969 check_inline_asm(){
970     log check_inline_asm "$@"
971     name="$1"
972     code="$2"
973     shift 2
974     disable $name
975     check_cc "$@" <<EOF && enable $name
976 void foo(void){ __asm__ volatile($code); }
977 EOF
978 }
979
980 check_inline_asm_flags(){
981     log check_inline_asm_flags "$@"
982     name="$1"
983     code="$2"
984     flags=''
985     shift 2
986     while [ "$1" != "" ]; do
987       append flags $1
988       shift
989     done;
990     disable $name
991     cat > $TMPC <<EOF
992 void foo(void){ __asm__ volatile($code); }
993 EOF
994     log_file $TMPC
995     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
996     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
997 }
998
999 check_insn(){
1000     log check_insn "$@"
1001     check_inline_asm ${1}_inline "\"$2\""
1002     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
1003 }
1004
1005 check_x86asm(){
1006     log check_x86asm "$@"
1007     echo "$1" > $TMPS
1008     log_file $TMPS
1009     shift 1
1010     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1011 }
1012
1013 ld_o(){
1014     eval printf '%s\\n' $LD_O
1015 }
1016
1017 check_ld(){
1018     log check_ld "$@"
1019     type=$1
1020     shift 1
1021     flags=$(filter_out '-l*|*.so' $@)
1022     libs=$(filter '-l*|*.so' $@)
1023     check_$type $($cflags_filter $flags) || return
1024     flags=$($ldflags_filter $flags)
1025     libs=$($ldflags_filter $libs)
1026     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1027 }
1028
1029 print_include(){
1030     hdr=$1
1031     test "${hdr%.h}" = "${hdr}" &&
1032         echo "#include $hdr"    ||
1033         echo "#include <$hdr>"
1034 }
1035
1036 check_code(){
1037     log check_code "$@"
1038     check=$1
1039     headers=$2
1040     code=$3
1041     shift 3
1042     {
1043         for hdr in $headers; do
1044             print_include $hdr
1045         done
1046         echo "int main(void) { $code; return 0; }"
1047     } | check_$check "$@"
1048 }
1049
1050 check_cppflags(){
1051     log check_cppflags "$@"
1052     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1053 #include <stdlib.h>
1054 EOF
1055 }
1056
1057 test_cflags(){
1058     log test_cflags "$@"
1059     set -- $($cflags_filter "$@")
1060     check_cc "$@" <<EOF
1061 int x;
1062 EOF
1063 }
1064
1065 check_cflags(){
1066     log check_cflags "$@"
1067     test_cflags "$@" && add_cflags "$@"
1068 }
1069
1070 check_cxxflags(){
1071     log check_cxxflags "$@"
1072     set -- $($cflags_filter "$@")
1073     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1074 int x;
1075 EOF
1076 }
1077
1078 test_objcflags(){
1079     log test_objcflags "$@"
1080     set -- $($objcflags_filter "$@")
1081     check_objcc "$@" <<EOF
1082 int x;
1083 EOF
1084 }
1085
1086 check_objcflags(){
1087     log check_objcflags "$@"
1088     test_objcflags "$@" && add_objcflags "$@"
1089 }
1090
1091 test_ldflags(){
1092     log test_ldflags "$@"
1093     set -- $($ldflags_filter "$@")
1094     check_ld "cc" "$@" <<EOF
1095 int main(void){ return 0; }
1096 EOF
1097 }
1098
1099 check_ldflags(){
1100     log check_ldflags "$@"
1101     test_ldflags "$@" && add_ldflags "$@"
1102 }
1103
1104 test_stripflags(){
1105     log test_stripflags "$@"
1106     # call check_cc to get a fresh TMPO
1107     check_cc <<EOF
1108 int main(void) { return 0; }
1109 EOF
1110     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1111 }
1112
1113 check_stripflags(){
1114     log check_stripflags "$@"
1115     test_stripflags "$@" && add_stripflags "$@"
1116 }
1117
1118 check_header(){
1119     log check_header "$@"
1120     headers=$1
1121     shift
1122     disable_sanitized $headers
1123     {
1124         for hdr in $headers; do
1125             print_include $hdr
1126         done
1127         echo "int x;"
1128     } | check_cpp "$@" && enable_sanitized $headers
1129 }
1130
1131 check_header_objcc(){
1132     log check_header_objcc "$@"
1133     rm -f -- "$TMPO"
1134     header=$1
1135     shift
1136     disable_sanitized $header
1137     {
1138        echo "#include <$header>"
1139        echo "int main(void) { return 0; }"
1140     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1141 }
1142
1143 check_apple_framework(){
1144     log check_apple_framework "$@"
1145     framework="$1"
1146     name="$(tolower $framework)"
1147     header="${framework}/${framework}.h"
1148     disable $name
1149     check_header_objcc $header &&
1150         enable $name && eval ${name}_extralibs='"-framework $framework"'
1151 }
1152
1153 check_func(){
1154     log check_func "$@"
1155     func=$1
1156     shift
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 extern int $func();
1160 int main(void){ $func(); }
1161 EOF
1162 }
1163
1164 check_complexfunc(){
1165     log check_complexfunc "$@"
1166     func=$1
1167     narg=$2
1168     shift 2
1169     test $narg = 2 && args="f, g" || args="f * I"
1170     disable $func
1171     check_ld "cc" "$@" <<EOF && enable $func
1172 #include <complex.h>
1173 #include <math.h>
1174 float foo(complex float f, complex float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_mathfunc(){
1180     log check_mathfunc "$@"
1181     func=$1
1182     narg=$2
1183     shift 2
1184     test $narg = 2 && args="f, g" || args="f"
1185     disable $func
1186     check_ld "cc" "$@" <<EOF && enable $func
1187 #include <math.h>
1188 float foo(float f, float g) { return $func($args); }
1189 int main(void){ return (int) foo; }
1190 EOF
1191 }
1192
1193 check_func_headers(){
1194     log check_func_headers "$@"
1195     headers=$1
1196     funcs=$2
1197     shift 2
1198     {
1199         for hdr in $headers; do
1200             print_include $hdr
1201         done
1202         echo "#include <stdint.h>"
1203         for func in $funcs; do
1204             echo "long check_$func(void) { return (long) $func; }"
1205         done
1206         echo "int main(void) { int ret = 0;"
1207         # LTO could optimize out the test functions without this
1208         for func in $funcs; do
1209             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1210         done
1211         echo "return ret; }"
1212     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1213 }
1214
1215 check_class_headers_cpp(){
1216     log check_class_headers_cpp "$@"
1217     headers=$1
1218     classes=$2
1219     shift 2
1220     {
1221         for hdr in $headers; do
1222             echo "#include <$hdr>"
1223         done
1224         echo "int main(void) { "
1225         i=1
1226         for class in $classes; do
1227             echo "$class obj$i;"
1228             i=$(expr $i + 1)
1229         done
1230         echo "return 0; }"
1231     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1232 }
1233
1234 check_cpp_condition(){
1235     log check_cpp_condition "$@"
1236     header=$1
1237     condition=$2
1238     shift 2
1239     check_cpp "$@" <<EOF
1240 #include <$header>
1241 #if !($condition)
1242 #error "unsatisfied condition: $condition"
1243 #endif
1244 EOF
1245 }
1246
1247 test_cflags_cc(){
1248     log test_cflags_cc "$@"
1249     flags=$1
1250     header=$2
1251     condition=$3
1252     shift 3
1253     set -- $($cflags_filter "$flags")
1254     check_cc "$@" <<EOF
1255 #include <$header>
1256 #if !($condition)
1257 #error "unsatisfied condition: $condition"
1258 #endif
1259 EOF
1260 }
1261
1262 check_lib(){
1263     log check_lib "$@"
1264     name="$1"
1265     headers="$2"
1266     funcs="$3"
1267     shift 3
1268     disable $name
1269     check_func_headers "$headers" "$funcs" "$@" &&
1270         enable $name && eval ${name}_extralibs="\$@"
1271 }
1272
1273 check_lib_cpp(){
1274     log check_lib_cpp "$@"
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     disable $name
1280     check_class_headers_cpp "$headers" "$classes" "$@" &&
1281         enable $name && eval ${name}_extralibs="\$@"
1282 }
1283
1284 test_pkg_config(){
1285     log test_pkg_config "$@"
1286     name="$1"
1287     pkg_version="$2"
1288     pkg="${2%% *}"
1289     headers="$3"
1290     funcs="$4"
1291     shift 4
1292     disable $name
1293     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1294     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1295     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1296     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1297         enable $name &&
1298         set_sanitized "${name}_cflags"    $pkg_cflags &&
1299         set_sanitized "${name}_extralibs" $pkg_libs
1300 }
1301
1302 check_pkg_config(){
1303     log check_pkg_config "$@"
1304     name="$1"
1305     test_pkg_config "$@" &&
1306         eval add_cflags \$${name}_cflags
1307 }
1308
1309 check_exec(){
1310     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1311 }
1312
1313 check_exec_crash(){
1314     log check_exec_crash "$@"
1315     code=$(cat)
1316
1317     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1318     # are safe but may not be available everywhere.  Thus we use
1319     # raise(SIGTERM) instead.  The check is run in a subshell so we
1320     # can redirect the "Terminated" message from the shell.  SIGBUS
1321     # is not defined by standard C so it is used conditionally.
1322
1323     (check_exec "$@") >> $logfile 2>&1 <<EOF
1324 #include <signal.h>
1325 static void sighandler(int sig){
1326     raise(SIGTERM);
1327 }
1328 int foo(void){
1329     $code
1330 }
1331 int (*func_ptr)(void) = foo;
1332 int main(void){
1333     signal(SIGILL, sighandler);
1334     signal(SIGFPE, sighandler);
1335     signal(SIGSEGV, sighandler);
1336 #ifdef SIGBUS
1337     signal(SIGBUS, sighandler);
1338 #endif
1339     return func_ptr();
1340 }
1341 EOF
1342 }
1343
1344 check_type(){
1345     log check_type "$@"
1346     headers=$1
1347     type=$2
1348     shift 2
1349     disable_sanitized "$type"
1350     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1351 }
1352
1353 check_struct(){
1354     log check_struct "$@"
1355     headers=$1
1356     struct=$2
1357     member=$3
1358     shift 3
1359     disable_sanitized "${struct}_${member}"
1360     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1361         enable_sanitized "${struct}_${member}"
1362 }
1363
1364 check_builtin(){
1365     log check_builtin "$@"
1366     name=$1
1367     headers=$2
1368     builtin=$3
1369     shift 3
1370     disable "$name"
1371     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1372 }
1373
1374 check_compile_assert(){
1375     log check_compile_assert "$@"
1376     name=$1
1377     headers=$2
1378     condition=$3
1379     shift 3
1380     disable "$name"
1381     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1382 }
1383
1384 require(){
1385     log require "$@"
1386     name_version="$1"
1387     name="${1%% *}"
1388     headers="$2"
1389     func="$3"
1390     shift 3
1391     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1392 }
1393
1394 require_cpp(){
1395     name="$1"
1396     headers="$2"
1397     classes="$3"
1398     shift 3
1399     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1400 }
1401
1402 require_header(){
1403     log require_header "$@"
1404     headers="$1"
1405     shift
1406     check_header "$headers" "$@" || die "ERROR: $headers not found"
1407 }
1408
1409 require_cpp_condition(){
1410     log require_cpp_condition "$@"
1411     header="$1"
1412     condition="$2"
1413     shift 2
1414     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1415 }
1416
1417 require_pkg_config(){
1418     log require_pkg_config "$@"
1419     pkg_version="$2"
1420     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1421 }
1422
1423 hostcc_e(){
1424     eval printf '%s\\n' $HOSTCC_E
1425 }
1426
1427 hostcc_o(){
1428     eval printf '%s\\n' $HOSTCC_O
1429 }
1430
1431 check_host_cc(){
1432     log check_host_cc "$@"
1433     cat > $TMPC
1434     log_file $TMPC
1435     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1436 }
1437
1438 check_host_cpp(){
1439     log check_host_cpp "$@"
1440     cat > $TMPC
1441     log_file $TMPC
1442     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1443 }
1444
1445 check_host_cppflags(){
1446     log check_host_cppflags "$@"
1447     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1448 #include <stdlib.h>
1449 EOF
1450 }
1451
1452 check_host_cflags(){
1453     log check_host_cflags "$@"
1454     set -- $($host_cflags_filter "$@")
1455     check_host_cc "$@" <<EOF && append host_cflags "$@"
1456 int x;
1457 EOF
1458 }
1459
1460 check_host_cpp_condition(){
1461     log check_host_cpp_condition "$@"
1462     header=$1
1463     condition=$2
1464     shift 2
1465     check_host_cpp "$@" <<EOF
1466 #include <$header>
1467 #if !($condition)
1468 #error "unsatisfied condition: $condition"
1469 #endif
1470 EOF
1471 }
1472
1473 cp_if_changed(){
1474     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1475     mkdir -p "$(dirname $2)"
1476     cp -f "$1" "$2"
1477 }
1478
1479 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1480 # system-dependent things.
1481
1482 AVCODEC_COMPONENTS="
1483     bsfs
1484     decoders
1485     encoders
1486     hwaccels
1487     parsers
1488 "
1489
1490 AVDEVICE_COMPONENTS="
1491     indevs
1492     outdevs
1493 "
1494
1495 AVFILTER_COMPONENTS="
1496     filters
1497 "
1498
1499 AVFORMAT_COMPONENTS="
1500     demuxers
1501     muxers
1502     protocols
1503 "
1504
1505 COMPONENT_LIST="
1506     $AVCODEC_COMPONENTS
1507     $AVDEVICE_COMPONENTS
1508     $AVFILTER_COMPONENTS
1509     $AVFORMAT_COMPONENTS
1510 "
1511
1512 EXAMPLE_LIST="
1513     avio_dir_cmd_example
1514     avio_reading_example
1515     decode_audio_example
1516     decode_video_example
1517     demuxing_decoding_example
1518     encode_audio_example
1519     encode_video_example
1520     extract_mvs_example
1521     filter_audio_example
1522     filtering_audio_example
1523     filtering_video_example
1524     http_multiclient_example
1525     hw_decode_example
1526     metadata_example
1527     muxing_example
1528     qsvdec_example
1529     remuxing_example
1530     resampling_audio_example
1531     scaling_video_example
1532     transcode_aac_example
1533     transcoding_example
1534     vaapi_encode_example
1535     vaapi_transcode_example
1536 "
1537
1538 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1539     alsa
1540     appkit
1541     avfoundation
1542     bzlib
1543     coreimage
1544     iconv
1545     libxcb
1546     libxcb_shm
1547     libxcb_shape
1548     libxcb_xfixes
1549     lzma
1550     schannel
1551     sdl2
1552     securetransport
1553     sndio
1554     xlib
1555     zlib
1556 "
1557
1558 EXTERNAL_LIBRARY_GPL_LIST="
1559     avisynth
1560     frei0r
1561     libcdio
1562     librubberband
1563     libvidstab
1564     libx264
1565     libx265
1566     libxavs
1567     libxvid
1568 "
1569
1570 EXTERNAL_LIBRARY_NONFREE_LIST="
1571     decklink
1572     libndi_newtek
1573     libfdk_aac
1574     openssl
1575     libtls
1576 "
1577
1578 EXTERNAL_LIBRARY_VERSION3_LIST="
1579     gmp
1580     libopencore_amrnb
1581     libopencore_amrwb
1582     libvmaf
1583     libvo_amrwbenc
1584     rkmpp
1585 "
1586
1587 EXTERNAL_LIBRARY_GPLV3_LIST="
1588     libsmbclient
1589 "
1590
1591 EXTERNAL_LIBRARY_LIST="
1592     $EXTERNAL_LIBRARY_GPL_LIST
1593     $EXTERNAL_LIBRARY_NONFREE_LIST
1594     $EXTERNAL_LIBRARY_VERSION3_LIST
1595     $EXTERNAL_LIBRARY_GPLV3_LIST
1596     chromaprint
1597     gcrypt
1598     gnutls
1599     jni
1600     ladspa
1601     libass
1602     libbluray
1603     libbs2b
1604     libcaca
1605     libcelt
1606     libdc1394
1607     libdrm
1608     libflite
1609     libfontconfig
1610     libfreetype
1611     libfribidi
1612     libgme
1613     libgsm
1614     libiec61883
1615     libilbc
1616     libjack
1617     libkvazaar
1618     libmodplug
1619     libmp3lame
1620     libmysofa
1621     libopencv
1622     libopenh264
1623     libopenjpeg
1624     libopenmpt
1625     libopus
1626     libpulse
1627     librsvg
1628     librtmp
1629     libshine
1630     libsmbclient
1631     libsnappy
1632     libsoxr
1633     libspeex
1634     libssh
1635     libtesseract
1636     libtheora
1637     libtwolame
1638     libv4l2
1639     libvorbis
1640     libvpx
1641     libwavpack
1642     libwebp
1643     libxml2
1644     libzimg
1645     libzmq
1646     libzvbi
1647     lv2
1648     mediacodec
1649     openal
1650     opengl
1651 "
1652
1653 HWACCEL_AUTODETECT_LIBRARY_LIST="
1654     amf
1655     audiotoolbox
1656     crystalhd
1657     cuda
1658     cuvid
1659     d3d11va
1660     dxva2
1661     nvdec
1662     nvenc
1663     vaapi
1664     vdpau
1665     videotoolbox
1666     v4l2_m2m
1667     xvmc
1668 "
1669
1670 # catchall list of things that require external libs to link
1671 EXTRALIBS_LIST="
1672     cpu_init
1673     cws2fws
1674 "
1675
1676 HWACCEL_LIBRARY_NONFREE_LIST="
1677     cuda_sdk
1678     libnpp
1679 "
1680
1681 HWACCEL_LIBRARY_LIST="
1682     $HWACCEL_LIBRARY_NONFREE_LIST
1683     libmfx
1684     mmal
1685     omx
1686     opencl
1687 "
1688
1689 DOCUMENT_LIST="
1690     doc
1691     htmlpages
1692     manpages
1693     podpages
1694     txtpages
1695 "
1696
1697 FEATURE_LIST="
1698     ftrapv
1699     gray
1700     hardcoded_tables
1701     omx_rpi
1702     runtime_cpudetect
1703     safe_bitstream_reader
1704     shared
1705     small
1706     static
1707     swscale_alpha
1708 "
1709
1710 LIBRARY_LIST="
1711     avcodec
1712     avdevice
1713     avfilter
1714     avformat
1715     avresample
1716     avutil
1717     postproc
1718     swresample
1719     swscale
1720 "
1721
1722 LICENSE_LIST="
1723     gpl
1724     nonfree
1725     version3
1726 "
1727
1728 PROGRAM_LIST="
1729     ffplay
1730     ffprobe
1731     ffmpeg
1732 "
1733
1734 SUBSYSTEM_LIST="
1735     dct
1736     dwt
1737     error_resilience
1738     faan
1739     fast_unaligned
1740     fft
1741     lsp
1742     lzo
1743     mdct
1744     pixelutils
1745     network
1746     rdft
1747 "
1748
1749 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1750 CONFIG_LIST="
1751     $DOCUMENT_LIST
1752     $EXAMPLE_LIST
1753     $EXTERNAL_LIBRARY_LIST
1754     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1755     $HWACCEL_LIBRARY_LIST
1756     $HWACCEL_AUTODETECT_LIBRARY_LIST
1757     $FEATURE_LIST
1758     $LICENSE_LIST
1759     $LIBRARY_LIST
1760     $PROGRAM_LIST
1761     $SUBSYSTEM_LIST
1762     autodetect
1763     fontconfig
1764     linux_perf
1765     memory_poisoning
1766     neon_clobber_test
1767     ossfuzz
1768     pic
1769     thumb
1770     valgrind_backtrace
1771     xmm_clobber_test
1772     $COMPONENT_LIST
1773 "
1774
1775 THREADS_LIST="
1776     pthreads
1777     os2threads
1778     w32threads
1779 "
1780
1781 ATOMICS_LIST="
1782     atomics_gcc
1783     atomics_suncc
1784     atomics_win32
1785 "
1786
1787 AUTODETECT_LIBS="
1788     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1789     $HWACCEL_AUTODETECT_LIBRARY_LIST
1790     $THREADS_LIST
1791 "
1792
1793 ARCH_LIST="
1794     aarch64
1795     alpha
1796     arm
1797     avr32
1798     avr32_ap
1799     avr32_uc
1800     bfin
1801     ia64
1802     m68k
1803     mips
1804     mips64
1805     parisc
1806     ppc
1807     ppc64
1808     s390
1809     sh4
1810     sparc
1811     sparc64
1812     tilegx
1813     tilepro
1814     tomi
1815     x86
1816     x86_32
1817     x86_64
1818 "
1819
1820 ARCH_EXT_LIST_ARM="
1821     armv5te
1822     armv6
1823     armv6t2
1824     armv8
1825     neon
1826     vfp
1827     vfpv3
1828     setend
1829 "
1830
1831 ARCH_EXT_LIST_MIPS="
1832     mipsfpu
1833     mips32r2
1834     mips32r5
1835     mips64r2
1836     mips32r6
1837     mips64r6
1838     mipsdsp
1839     mipsdspr2
1840     msa
1841 "
1842
1843 ARCH_EXT_LIST_LOONGSON="
1844     loongson2
1845     loongson3
1846     mmi
1847 "
1848
1849 ARCH_EXT_LIST_X86_SIMD="
1850     aesni
1851     amd3dnow
1852     amd3dnowext
1853     avx
1854     avx2
1855     avx512
1856     fma3
1857     fma4
1858     mmx
1859     mmxext
1860     sse
1861     sse2
1862     sse3
1863     sse4
1864     sse42
1865     ssse3
1866     xop
1867 "
1868
1869 ARCH_EXT_LIST_PPC="
1870     altivec
1871     dcbzl
1872     ldbrx
1873     power8
1874     ppc4xx
1875     vsx
1876 "
1877
1878 ARCH_EXT_LIST_X86="
1879     $ARCH_EXT_LIST_X86_SIMD
1880     cpunop
1881     i686
1882 "
1883
1884 ARCH_EXT_LIST="
1885     $ARCH_EXT_LIST_ARM
1886     $ARCH_EXT_LIST_PPC
1887     $ARCH_EXT_LIST_X86
1888     $ARCH_EXT_LIST_MIPS
1889     $ARCH_EXT_LIST_LOONGSON
1890 "
1891
1892 ARCH_FEATURES="
1893     aligned_stack
1894     fast_64bit
1895     fast_clz
1896     fast_cmov
1897     local_aligned
1898     simd_align_16
1899     simd_align_32
1900     simd_align_64
1901 "
1902
1903 BUILTIN_LIST="
1904     atomic_cas_ptr
1905     machine_rw_barrier
1906     MemoryBarrier
1907     mm_empty
1908     rdtsc
1909     sem_timedwait
1910     sync_val_compare_and_swap
1911 "
1912 HAVE_LIST_CMDLINE="
1913     inline_asm
1914     symver
1915     x86asm
1916 "
1917
1918 HAVE_LIST_PUB="
1919     bigendian
1920     fast_unaligned
1921 "
1922
1923 HEADERS_LIST="
1924     arpa_inet_h
1925     asm_types_h
1926     cdio_paranoia_h
1927     cdio_paranoia_paranoia_h
1928     cuda_h
1929     dispatch_dispatch_h
1930     dev_bktr_ioctl_bt848_h
1931     dev_bktr_ioctl_meteor_h
1932     dev_ic_bt8xx_h
1933     dev_video_bktr_ioctl_bt848_h
1934     dev_video_meteor_ioctl_meteor_h
1935     direct_h
1936     dirent_h
1937     dxgidebug_h
1938     dxva_h
1939     ES2_gl_h
1940     gsm_h
1941     io_h
1942     machine_ioctl_bt848_h
1943     machine_ioctl_meteor_h
1944     malloc_h
1945     opencv2_core_core_c_h
1946     OpenGL_gl3_h
1947     poll_h
1948     sys_param_h
1949     sys_resource_h
1950     sys_select_h
1951     sys_soundcard_h
1952     sys_time_h
1953     sys_un_h
1954     sys_videoio_h
1955     termios_h
1956     udplite_h
1957     unistd_h
1958     valgrind_valgrind_h
1959     windows_h
1960     winsock2_h
1961 "
1962
1963 INTRINSICS_LIST="
1964     intrinsics_neon
1965 "
1966
1967 COMPLEX_FUNCS="
1968     cabs
1969     cexp
1970 "
1971
1972 MATH_FUNCS="
1973     atanf
1974     atan2f
1975     cbrt
1976     cbrtf
1977     copysign
1978     cosf
1979     erf
1980     exp2
1981     exp2f
1982     expf
1983     hypot
1984     isfinite
1985     isinf
1986     isnan
1987     ldexpf
1988     llrint
1989     llrintf
1990     log2
1991     log2f
1992     log10f
1993     lrint
1994     lrintf
1995     powf
1996     rint
1997     round
1998     roundf
1999     sinf
2000     trunc
2001     truncf
2002 "
2003
2004 SYSTEM_FEATURES="
2005     dos_paths
2006     libc_msvcrt
2007     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2008     section_data_rel_ro
2009     threads
2010     uwp
2011     winrt
2012 "
2013
2014 SYSTEM_FUNCS="
2015     access
2016     aligned_malloc
2017     arc4random
2018     clock_gettime
2019     closesocket
2020     CommandLineToArgvW
2021     fcntl
2022     getaddrinfo
2023     gethrtime
2024     getopt
2025     GetProcessAffinityMask
2026     GetProcessMemoryInfo
2027     GetProcessTimes
2028     getrusage
2029     GetSystemTimeAsFileTime
2030     gettimeofday
2031     glob
2032     glXGetProcAddress
2033     gmtime_r
2034     inet_aton
2035     isatty
2036     kbhit
2037     localtime_r
2038     lstat
2039     lzo1x_999_compress
2040     mach_absolute_time
2041     MapViewOfFile
2042     memalign
2043     mkstemp
2044     mmap
2045     mprotect
2046     nanosleep
2047     PeekNamedPipe
2048     posix_memalign
2049     pthread_cancel
2050     sched_getaffinity
2051     SecItemImport
2052     SetConsoleTextAttribute
2053     SetConsoleCtrlHandler
2054     setmode
2055     setrlimit
2056     Sleep
2057     strerror_r
2058     sysconf
2059     sysctl
2060     usleep
2061     UTGetOSTypeFromString
2062     VirtualAlloc
2063     wglGetProcAddress
2064 "
2065
2066 SYSTEM_LIBRARIES="
2067     vaapi_drm
2068     vaapi_x11
2069     vdpau_x11
2070     wincrypt
2071 "
2072
2073 TOOLCHAIN_FEATURES="
2074     as_arch_directive
2075     as_fpu_directive
2076     as_func
2077     as_object_arch
2078     asm_mod_q
2079     blocks_extension
2080     ebp_available
2081     ebx_available
2082     gnu_as
2083     gnu_windres
2084     ibm_asm
2085     inline_asm_direct_symbol_refs
2086     inline_asm_labels
2087     inline_asm_nonlocal_labels
2088     pragma_deprecated
2089     rsync_contimeout
2090     symver_asm_label
2091     symver_gnu_asm
2092     vfp_args
2093     xform_asm
2094     xmm_clobbers
2095 "
2096
2097 TYPES_LIST="
2098     kCMVideoCodecType_HEVC
2099     socklen_t
2100     struct_addrinfo
2101     struct_group_source_req
2102     struct_ip_mreq_source
2103     struct_ipv6_mreq
2104     struct_msghdr_msg_flags
2105     struct_pollfd
2106     struct_rusage_ru_maxrss
2107     struct_sctp_event_subscribe
2108     struct_sockaddr_in6
2109     struct_sockaddr_sa_len
2110     struct_sockaddr_storage
2111     struct_stat_st_mtim_tv_nsec
2112     struct_v4l2_frmivalenum_discrete
2113 "
2114
2115 HAVE_LIST="
2116     $ARCH_EXT_LIST
2117     $(add_suffix _external $ARCH_EXT_LIST)
2118     $(add_suffix _inline   $ARCH_EXT_LIST)
2119     $ARCH_FEATURES
2120     $BUILTIN_LIST
2121     $COMPLEX_FUNCS
2122     $HAVE_LIST_CMDLINE
2123     $HAVE_LIST_PUB
2124     $HEADERS_LIST
2125     $INTRINSICS_LIST
2126     $MATH_FUNCS
2127     $SYSTEM_FEATURES
2128     $SYSTEM_FUNCS
2129     $SYSTEM_LIBRARIES
2130     $THREADS_LIST
2131     $TOOLCHAIN_FEATURES
2132     $TYPES_LIST
2133     makeinfo
2134     makeinfo_html
2135     opencl_d3d11
2136     opencl_drm_arm
2137     opencl_dxva2
2138     opencl_vaapi_beignet
2139     opencl_vaapi_intel_media
2140     perl
2141     pod2man
2142     texi2html
2143 "
2144
2145 # options emitted with CONFIG_ prefix but not available on the command line
2146 CONFIG_EXTRA="
2147     aandcttables
2148     ac3dsp
2149     adts_header
2150     audio_frame_queue
2151     audiodsp
2152     blockdsp
2153     bswapdsp
2154     cabac
2155     cbs
2156     cbs_h264
2157     cbs_h265
2158     cbs_mpeg2
2159     dirac_parse
2160     dvprofile
2161     exif
2162     faandct
2163     faanidct
2164     fdctdsp
2165     flacdsp
2166     fmtconvert
2167     frame_thread_encoder
2168     g722dsp
2169     golomb
2170     gplv3
2171     h263dsp
2172     h264chroma
2173     h264dsp
2174     h264parse
2175     h264pred
2176     h264qpel
2177     hevcparse
2178     hpeldsp
2179     huffman
2180     huffyuvdsp
2181     huffyuvencdsp
2182     idctdsp
2183     iirfilter
2184     mdct15
2185     intrax8
2186     iso_media
2187     ividsp
2188     jpegtables
2189     lgplv3
2190     libx262
2191     llauddsp
2192     llviddsp
2193     llvidencdsp
2194     lpc
2195     lzf
2196     me_cmp
2197     mpeg_er
2198     mpegaudio
2199     mpegaudiodsp
2200     mpegaudioheader
2201     mpegvideo
2202     mpegvideoenc
2203     mss34dsp
2204     pixblockdsp
2205     qpeldsp
2206     qsv
2207     qsvdec
2208     qsvenc
2209     qsvvpp
2210     rangecoder
2211     riffdec
2212     riffenc
2213     rtpdec
2214     rtpenc_chain
2215     rv34dsp
2216     sinewin
2217     snappy
2218     srtp
2219     startcode
2220     texturedsp
2221     texturedspenc
2222     tpeldsp
2223     vaapi_1
2224     vaapi_encode
2225     vc1dsp
2226     videodsp
2227     vp3dsp
2228     vp56dsp
2229     vp8dsp
2230     wma_freqs
2231     wmv2dsp
2232 "
2233
2234 CMDLINE_SELECT="
2235     $ARCH_EXT_LIST
2236     $CONFIG_LIST
2237     $HAVE_LIST_CMDLINE
2238     $THREADS_LIST
2239     asm
2240     cross_compile
2241     debug
2242     extra_warnings
2243     logging
2244     lto
2245     optimizations
2246     rpath
2247     stripping
2248 "
2249
2250 PATHS_LIST="
2251     bindir
2252     datadir
2253     docdir
2254     incdir
2255     libdir
2256     mandir
2257     pkgconfigdir
2258     prefix
2259     shlibdir
2260     install_name_dir
2261 "
2262
2263 CMDLINE_SET="
2264     $PATHS_LIST
2265     ar
2266     arch
2267     as
2268     assert_level
2269     build_suffix
2270     cc
2271     objcc
2272     cpu
2273     cross_prefix
2274     custom_allocator
2275     cxx
2276     dep_cc
2277     doxygen
2278     env
2279     extra_version
2280     gas
2281     host_cc
2282     host_cflags
2283     host_extralibs
2284     host_ld
2285     host_ldflags
2286     host_os
2287     ignore_tests
2288     install
2289     ld
2290     ln_s
2291     logfile
2292     malloc_prefix
2293     nm
2294     optflags
2295     nvccflags
2296     pkg_config
2297     pkg_config_flags
2298     progs_suffix
2299     random_seed
2300     ranlib
2301     samples
2302     strip
2303     sws_max_filter_size
2304     sysinclude
2305     sysroot
2306     target_exec
2307     target_os
2308     target_path
2309     target_samples
2310     tempprefix
2311     toolchain
2312     valgrind
2313     x86asmexe
2314 "
2315
2316 CMDLINE_APPEND="
2317     extra_cflags
2318     extra_cxxflags
2319     extra_objcflags
2320     host_cppflags
2321 "
2322
2323 # code dependency declarations
2324
2325 # architecture extensions
2326
2327 armv5te_deps="arm"
2328 armv6_deps="arm"
2329 armv6t2_deps="arm"
2330 armv8_deps="aarch64"
2331 neon_deps_any="aarch64 arm"
2332 intrinsics_neon_deps="neon"
2333 vfp_deps_any="aarch64 arm"
2334 vfpv3_deps="vfp"
2335 setend_deps="arm"
2336
2337 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2338
2339 altivec_deps="ppc"
2340 dcbzl_deps="ppc"
2341 ldbrx_deps="ppc"
2342 ppc4xx_deps="ppc"
2343 vsx_deps="altivec"
2344 power8_deps="vsx"
2345
2346 loongson2_deps="mips"
2347 loongson3_deps="mips"
2348 mips32r2_deps="mips"
2349 mips32r5_deps="mips"
2350 mips32r6_deps="mips"
2351 mips64r2_deps="mips"
2352 mips64r6_deps="mips"
2353 mipsfpu_deps="mips"
2354 mipsdsp_deps="mips"
2355 mipsdspr2_deps="mips"
2356 mmi_deps="mips"
2357 msa_deps="mipsfpu"
2358
2359 cpunop_deps="i686"
2360 x86_64_select="i686"
2361 x86_64_suggest="fast_cmov"
2362
2363 amd3dnow_deps="mmx"
2364 amd3dnowext_deps="amd3dnow"
2365 i686_deps="x86"
2366 mmx_deps="x86"
2367 mmxext_deps="mmx"
2368 sse_deps="mmxext"
2369 sse2_deps="sse"
2370 sse3_deps="sse2"
2371 ssse3_deps="sse3"
2372 sse4_deps="ssse3"
2373 sse42_deps="sse4"
2374 aesni_deps="sse42"
2375 avx_deps="sse42"
2376 xop_deps="avx"
2377 fma3_deps="avx"
2378 fma4_deps="avx"
2379 avx2_deps="avx"
2380 avx512_deps="avx2"
2381
2382 mmx_external_deps="x86asm"
2383 mmx_inline_deps="inline_asm x86"
2384 mmx_suggest="mmx_external mmx_inline"
2385
2386 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2387     eval dep=\$${ext}_deps
2388     eval ${ext}_external_deps='"${dep}_external"'
2389     eval ${ext}_inline_deps='"${dep}_inline"'
2390     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2391 done
2392
2393 aligned_stack_if_any="aarch64 ppc x86"
2394 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2395 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2396 fast_unaligned_if_any="aarch64 ppc x86"
2397 simd_align_16_if_any="altivec neon sse"
2398 simd_align_32_if_any="avx"
2399 simd_align_64_if_any="avx512"
2400
2401 # system capabilities
2402 symver_if_any="symver_asm_label symver_gnu_asm"
2403 valgrind_backtrace_conflict="optimizations"
2404 valgrind_backtrace_deps="valgrind_valgrind_h"
2405
2406 # threading support
2407 atomics_gcc_if="sync_val_compare_and_swap"
2408 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2409 atomics_win32_if="MemoryBarrier"
2410 atomics_native_if_any="$ATOMICS_LIST"
2411 w32threads_deps="atomics_native"
2412 threads_if_any="$THREADS_LIST"
2413
2414 # subsystems
2415 cbs_h264_select="cbs golomb"
2416 cbs_h265_select="cbs golomb"
2417 cbs_mpeg2_select="cbs"
2418 dct_select="rdft"
2419 dirac_parse_select="golomb"
2420 error_resilience_select="me_cmp"
2421 faandct_deps="faan"
2422 faandct_select="fdctdsp"
2423 faanidct_deps="faan"
2424 faanidct_select="idctdsp"
2425 h264dsp_select="startcode"
2426 hevcparse_select="golomb"
2427 frame_thread_encoder_deps="encoders threads"
2428 intrax8_select="blockdsp idctdsp"
2429 mdct_select="fft"
2430 mdct15_select="fft"
2431 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2432 mpeg_er_select="error_resilience"
2433 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2434 mpegaudiodsp_select="dct"
2435 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2436 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2437 vc1dsp_select="h264chroma qpeldsp startcode"
2438 rdft_select="fft"
2439
2440 # decoders / encoders
2441 aac_decoder_select="adts_header mdct15 mdct sinewin"
2442 aac_fixed_decoder_select="mdct sinewin"
2443 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2444 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2445 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2446 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2447 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2448 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2449 adpcm_g722_decoder_select="g722dsp"
2450 adpcm_g722_encoder_select="g722dsp"
2451 aic_decoder_select="golomb idctdsp"
2452 alac_encoder_select="lpc"
2453 als_decoder_select="bswapdsp"
2454 amrnb_decoder_select="lsp"
2455 amrwb_decoder_select="lsp"
2456 amv_decoder_select="sp5x_decoder exif"
2457 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2458 ape_decoder_select="bswapdsp llauddsp"
2459 apng_decoder_deps="zlib"
2460 apng_encoder_deps="zlib"
2461 apng_encoder_select="llvidencdsp"
2462 aptx_decoder_select="audio_frame_queue"
2463 aptx_encoder_select="audio_frame_queue"
2464 aptx_hd_decoder_select="audio_frame_queue"
2465 aptx_hd_encoder_select="audio_frame_queue"
2466 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2467 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2468 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2469 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2470 atrac1_decoder_select="mdct sinewin"
2471 atrac3_decoder_select="mdct"
2472 atrac3p_decoder_select="mdct sinewin"
2473 avrn_decoder_select="exif jpegtables"
2474 bink_decoder_select="blockdsp hpeldsp"
2475 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2476 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2477 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2478 clearvideo_decoder_select="idctdsp"
2479 cllc_decoder_select="bswapdsp"
2480 comfortnoise_encoder_select="lpc"
2481 cook_decoder_select="audiodsp mdct sinewin"
2482 cscd_decoder_select="lzo"
2483 cscd_decoder_suggest="zlib"
2484 dca_decoder_select="mdct"
2485 dds_decoder_select="texturedsp"
2486 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2487 dnxhd_decoder_select="blockdsp idctdsp"
2488 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2489 dolby_e_decoder_select="mdct"
2490 dvvideo_decoder_select="dvprofile idctdsp"
2491 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2492 dxa_decoder_deps="zlib"
2493 dxv_decoder_select="lzf texturedsp"
2494 eac3_decoder_select="ac3_decoder"
2495 eac3_encoder_select="ac3_encoder"
2496 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2497 eatgq_decoder_select="aandcttables"
2498 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2499 exr_decoder_deps="zlib"
2500 ffv1_decoder_select="rangecoder"
2501 ffv1_encoder_select="rangecoder"
2502 ffvhuff_decoder_select="huffyuv_decoder"
2503 ffvhuff_encoder_select="huffyuv_encoder"
2504 fic_decoder_select="golomb"
2505 flac_decoder_select="flacdsp"
2506 flac_encoder_select="bswapdsp flacdsp lpc"
2507 flashsv2_decoder_deps="zlib"
2508 flashsv2_encoder_deps="zlib"
2509 flashsv_decoder_deps="zlib"
2510 flashsv_encoder_deps="zlib"
2511 flv_decoder_select="h263_decoder"
2512 flv_encoder_select="h263_encoder"
2513 fourxm_decoder_select="blockdsp bswapdsp"
2514 fraps_decoder_select="bswapdsp huffman"
2515 g2m_decoder_deps="zlib"
2516 g2m_decoder_select="blockdsp idctdsp jpegtables"
2517 g729_decoder_select="audiodsp"
2518 h261_decoder_select="mpegvideo"
2519 h261_encoder_select="aandcttables mpegvideoenc"
2520 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2521 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2522 h263i_decoder_select="h263_decoder"
2523 h263p_decoder_select="h263_decoder"
2524 h263p_encoder_select="h263_encoder"
2525 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2526 h264_decoder_suggest="error_resilience"
2527 hap_decoder_select="snappy texturedsp"
2528 hap_encoder_deps="libsnappy"
2529 hap_encoder_select="texturedspenc"
2530 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2531 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2532 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2533 iac_decoder_select="imc_decoder"
2534 imc_decoder_select="bswapdsp fft mdct sinewin"
2535 indeo3_decoder_select="hpeldsp"
2536 indeo4_decoder_select="ividsp"
2537 indeo5_decoder_select="ividsp"
2538 interplay_video_decoder_select="hpeldsp"
2539 jpegls_decoder_select="mjpeg_decoder"
2540 jv_decoder_select="blockdsp"
2541 lagarith_decoder_select="llviddsp"
2542 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2543 magicyuv_decoder_select="llviddsp"
2544 magicyuv_encoder_select="llvidencdsp"
2545 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2546 metasound_decoder_select="lsp mdct sinewin"
2547 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2548 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2549 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2550 mjpegb_decoder_select="mjpeg_decoder"
2551 mlp_decoder_select="mlp_parser"
2552 mlp_encoder_select="lpc"
2553 motionpixels_decoder_select="bswapdsp"
2554 mp1_decoder_select="mpegaudio"
2555 mp1float_decoder_select="mpegaudio"
2556 mp2_decoder_select="mpegaudio"
2557 mp2float_decoder_select="mpegaudio"
2558 mp3_decoder_select="mpegaudio"
2559 mp3adu_decoder_select="mpegaudio"
2560 mp3adufloat_decoder_select="mpegaudio"
2561 mp3float_decoder_select="mpegaudio"
2562 mp3on4_decoder_select="mpegaudio"
2563 mp3on4float_decoder_select="mpegaudio"
2564 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2565 mpc8_decoder_select="mpegaudiodsp"
2566 mpegvideo_decoder_select="mpegvideo"
2567 mpeg1video_decoder_select="mpegvideo"
2568 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2569 mpeg2video_decoder_select="mpegvideo"
2570 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2571 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2572 mpeg4_encoder_select="h263_encoder"
2573 msa1_decoder_select="mss34dsp"
2574 mscc_decoder_deps="zlib"
2575 msmpeg4v1_decoder_select="h263_decoder"
2576 msmpeg4v2_decoder_select="h263_decoder"
2577 msmpeg4v2_encoder_select="h263_encoder"
2578 msmpeg4v3_decoder_select="h263_decoder"
2579 msmpeg4v3_encoder_select="h263_encoder"
2580 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2581 mts2_decoder_select="mss34dsp"
2582 mxpeg_decoder_select="mjpeg_decoder"
2583 nellymoser_decoder_select="mdct sinewin"
2584 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2585 nuv_decoder_select="idctdsp lzo"
2586 on2avc_decoder_select="mdct"
2587 opus_decoder_deps="swresample"
2588 opus_decoder_select="mdct15"
2589 opus_encoder_select="audio_frame_queue mdct15"
2590 png_decoder_deps="zlib"
2591 png_encoder_deps="zlib"
2592 png_encoder_select="llvidencdsp"
2593 prores_decoder_select="blockdsp idctdsp"
2594 prores_encoder_select="fdctdsp"
2595 qcelp_decoder_select="lsp"
2596 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2597 ra_144_decoder_select="audiodsp"
2598 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2599 ralf_decoder_select="golomb"
2600 rawvideo_decoder_select="bswapdsp"
2601 rscc_decoder_deps="zlib"
2602 rtjpeg_decoder_select="me_cmp"
2603 rv10_decoder_select="h263_decoder"
2604 rv10_encoder_select="h263_encoder"
2605 rv20_decoder_select="h263_decoder"
2606 rv20_encoder_select="h263_encoder"
2607 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2608 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2609 screenpresso_decoder_deps="zlib"
2610 shorten_decoder_select="bswapdsp"
2611 sipr_decoder_select="lsp"
2612 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2613 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2614 sonic_decoder_select="golomb rangecoder"
2615 sonic_encoder_select="golomb rangecoder"
2616 sonic_ls_encoder_select="golomb rangecoder"
2617 sp5x_decoder_select="mjpeg_decoder"
2618 srgc_decoder_deps="zlib"
2619 svq1_decoder_select="hpeldsp"
2620 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2621 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2622 svq3_decoder_suggest="zlib"
2623 tak_decoder_select="audiodsp"
2624 tdsc_decoder_deps="zlib"
2625 tdsc_decoder_select="mjpeg_decoder"
2626 theora_decoder_select="vp3_decoder"
2627 thp_decoder_select="mjpeg_decoder"
2628 tiff_decoder_suggest="zlib lzma"
2629 tiff_encoder_suggest="zlib"
2630 truehd_decoder_select="mlp_parser"
2631 truehd_encoder_select="lpc"
2632 truemotion2_decoder_select="bswapdsp"
2633 truespeech_decoder_select="bswapdsp"
2634 tscc_decoder_deps="zlib"
2635 twinvq_decoder_select="mdct lsp sinewin"
2636 txd_decoder_select="texturedsp"
2637 utvideo_decoder_select="bswapdsp llviddsp"
2638 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2639 vble_decoder_select="llviddsp"
2640 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2641 vc1image_decoder_select="vc1_decoder"
2642 vorbis_decoder_select="mdct"
2643 vorbis_encoder_select="mdct"
2644 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2645 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2646 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2647 vp6a_decoder_select="vp6_decoder"
2648 vp6f_decoder_select="vp6_decoder"
2649 vp7_decoder_select="h264pred videodsp vp8dsp"
2650 vp8_decoder_select="h264pred videodsp vp8dsp"
2651 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2652 webp_decoder_select="vp8_decoder exif"
2653 wmalossless_decoder_select="llauddsp"
2654 wmapro_decoder_select="mdct sinewin wma_freqs"
2655 wmav1_decoder_select="mdct sinewin wma_freqs"
2656 wmav1_encoder_select="mdct sinewin wma_freqs"
2657 wmav2_decoder_select="mdct sinewin wma_freqs"
2658 wmav2_encoder_select="mdct sinewin wma_freqs"
2659 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2660 wmv1_decoder_select="h263_decoder"
2661 wmv1_encoder_select="h263_encoder"
2662 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2663 wmv2_encoder_select="h263_encoder wmv2dsp"
2664 wmv3_decoder_select="vc1_decoder"
2665 wmv3image_decoder_select="wmv3_decoder"
2666 xma1_decoder_select="wmapro_decoder"
2667 xma2_decoder_select="wmapro_decoder"
2668 zerocodec_decoder_deps="zlib"
2669 zlib_decoder_deps="zlib"
2670 zlib_encoder_deps="zlib"
2671 zmbv_decoder_deps="zlib"
2672 zmbv_encoder_deps="zlib"
2673
2674 # hardware accelerators
2675 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2676 cuda_deps_any="libdl LoadLibrary"
2677 cuvid_deps="cuda"
2678 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2679 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2680 nvdec_deps="cuda"
2681 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2682 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2683 xvmc_deps="X11_extensions_XvMClib_h"
2684
2685 h263_vaapi_hwaccel_deps="vaapi"
2686 h263_vaapi_hwaccel_select="h263_decoder"
2687 h263_videotoolbox_hwaccel_deps="videotoolbox"
2688 h263_videotoolbox_hwaccel_select="h263_decoder"
2689 h264_d3d11va_hwaccel_deps="d3d11va"
2690 h264_d3d11va_hwaccel_select="h264_decoder"
2691 h264_d3d11va2_hwaccel_deps="d3d11va"
2692 h264_d3d11va2_hwaccel_select="h264_decoder"
2693 h264_dxva2_hwaccel_deps="dxva2"
2694 h264_dxva2_hwaccel_select="h264_decoder"
2695 h264_nvdec_hwaccel_deps="nvdec"
2696 h264_nvdec_hwaccel_select="h264_decoder"
2697 h264_vaapi_hwaccel_deps="vaapi"
2698 h264_vaapi_hwaccel_select="h264_decoder"
2699 h264_vdpau_hwaccel_deps="vdpau"
2700 h264_vdpau_hwaccel_select="h264_decoder"
2701 h264_videotoolbox_hwaccel_deps="videotoolbox"
2702 h264_videotoolbox_hwaccel_select="h264_decoder"
2703 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2704 hevc_d3d11va_hwaccel_select="hevc_decoder"
2705 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2706 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2707 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2708 hevc_dxva2_hwaccel_select="hevc_decoder"
2709 hevc_nvdec_hwaccel_deps="nvdec"
2710 hevc_nvdec_hwaccel_select="hevc_decoder"
2711 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2712 hevc_vaapi_hwaccel_select="hevc_decoder"
2713 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2714 hevc_vdpau_hwaccel_select="hevc_decoder"
2715 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2716 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2717 mjpeg_nvdec_hwaccel_deps="nvdec"
2718 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2719 mjpeg_vaapi_hwaccel_deps="vaapi"
2720 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2721 mpeg_xvmc_hwaccel_deps="xvmc"
2722 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2723 mpeg1_nvdec_hwaccel_deps="nvdec"
2724 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2725 mpeg1_vdpau_hwaccel_deps="vdpau"
2726 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2727 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2729 mpeg1_xvmc_hwaccel_deps="xvmc"
2730 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2731 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2732 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2734 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_dxva2_hwaccel_deps="dxva2"
2736 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_nvdec_hwaccel_deps="nvdec"
2738 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2739 mpeg2_vaapi_hwaccel_deps="vaapi"
2740 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2741 mpeg2_vdpau_hwaccel_deps="vdpau"
2742 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2743 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2744 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2745 mpeg2_xvmc_hwaccel_deps="xvmc"
2746 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2747 mpeg4_nvdec_hwaccel_deps="nvdec"
2748 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2749 mpeg4_vaapi_hwaccel_deps="vaapi"
2750 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2751 mpeg4_vdpau_hwaccel_deps="vdpau"
2752 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2753 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2754 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2755 vc1_d3d11va_hwaccel_deps="d3d11va"
2756 vc1_d3d11va_hwaccel_select="vc1_decoder"
2757 vc1_d3d11va2_hwaccel_deps="d3d11va"
2758 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2759 vc1_dxva2_hwaccel_deps="dxva2"
2760 vc1_dxva2_hwaccel_select="vc1_decoder"
2761 vc1_nvdec_hwaccel_deps="nvdec"
2762 vc1_nvdec_hwaccel_select="vc1_decoder"
2763 vc1_vaapi_hwaccel_deps="vaapi"
2764 vc1_vaapi_hwaccel_select="vc1_decoder"
2765 vc1_vdpau_hwaccel_deps="vdpau"
2766 vc1_vdpau_hwaccel_select="vc1_decoder"
2767 vp8_nvdec_hwaccel_deps="nvdec"
2768 vp8_nvdec_hwaccel_select="vp8_decoder"
2769 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2770 vp8_vaapi_hwaccel_select="vp8_decoder"
2771 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2772 vp9_d3d11va_hwaccel_select="vp9_decoder"
2773 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2774 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2775 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2776 vp9_dxva2_hwaccel_select="vp9_decoder"
2777 vp9_nvdec_hwaccel_deps="nvdec"
2778 vp9_nvdec_hwaccel_select="vp9_decoder"
2779 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2780 vp9_vaapi_hwaccel_select="vp9_decoder"
2781 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2782 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2783 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2784 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2785 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2786 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2787
2788 # hardware-accelerated codecs
2789 omx_deps="libdl pthreads"
2790 omx_rpi_select="omx"
2791 qsv_deps="libmfx"
2792 qsvdec_select="qsv"
2793 qsvenc_select="qsv"
2794 qsvvpp_select="qsv"
2795 vaapi_encode_deps="vaapi"
2796 v4l2_m2m_deps_any="linux_videodev2_h"
2797
2798 hwupload_cuda_filter_deps="cuda"
2799 scale_npp_filter_deps="cuda libnpp"
2800 scale_cuda_filter_deps="cuda_sdk"
2801 thumbnail_cuda_filter_deps="cuda_sdk"
2802
2803 amf_deps_any="libdl LoadLibrary"
2804 nvenc_deps="cuda"
2805 nvenc_deps_any="libdl LoadLibrary"
2806 nvenc_encoder_deps="nvenc"
2807
2808 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2810 h264_amf_encoder_deps="amf"
2811 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2812 h264_cuvid_decoder_deps="cuvid"
2813 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2814 h264_mediacodec_decoder_deps="mediacodec"
2815 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2816 h264_mmal_decoder_deps="mmal"
2817 h264_nvenc_encoder_deps="nvenc"
2818 h264_omx_encoder_deps="omx"
2819 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2820 h264_qsv_encoder_select="qsvenc"
2821 h264_rkmpp_decoder_deps="rkmpp"
2822 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2823 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2824 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2825 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2826 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2827 hevc_amf_encoder_deps="amf"
2828 hevc_cuvid_decoder_deps="cuvid"
2829 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2830 hevc_mediacodec_decoder_deps="mediacodec"
2831 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2832 hevc_nvenc_encoder_deps="nvenc"
2833 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2834 hevc_qsv_encoder_select="hevcparse qsvenc"
2835 hevc_rkmpp_decoder_deps="rkmpp"
2836 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2837 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2838 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2839 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2840 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2841 mjpeg_cuvid_decoder_deps="cuvid"
2842 mjpeg_qsv_encoder_deps="libmfx"
2843 mjpeg_qsv_encoder_select="qsvenc"
2844 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2845 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2846 mpeg1_cuvid_decoder_deps="cuvid"
2847 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2848 mpeg2_crystalhd_decoder_select="crystalhd"
2849 mpeg2_cuvid_decoder_deps="cuvid"
2850 mpeg2_mmal_decoder_deps="mmal"
2851 mpeg2_mediacodec_decoder_deps="mediacodec"
2852 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2853 mpeg2_qsv_encoder_select="qsvenc"
2854 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2855 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2856 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2857 mpeg4_crystalhd_decoder_select="crystalhd"
2858 mpeg4_cuvid_decoder_deps="cuvid"
2859 mpeg4_mediacodec_decoder_deps="mediacodec"
2860 mpeg4_mmal_decoder_deps="mmal"
2861 mpeg4_omx_encoder_deps="omx"
2862 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2864 msmpeg4_crystalhd_decoder_select="crystalhd"
2865 nvenc_h264_encoder_select="h264_nvenc_encoder"
2866 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2867 vc1_crystalhd_decoder_select="crystalhd"
2868 vc1_cuvid_decoder_deps="cuvid"
2869 vc1_mmal_decoder_deps="mmal"
2870 vc1_qsv_decoder_select="qsvdec vc1_parser"
2871 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2872 vp8_cuvid_decoder_deps="cuvid"
2873 vp8_mediacodec_decoder_deps="mediacodec"
2874 vp8_qsv_decoder_select="qsvdec vp8_parser"
2875 vp8_rkmpp_decoder_deps="rkmpp"
2876 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2877 vp8_vaapi_encoder_select="vaapi_encode"
2878 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2879 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2880 vp9_cuvid_decoder_deps="cuvid"
2881 vp9_mediacodec_decoder_deps="mediacodec"
2882 vp9_rkmpp_decoder_deps="rkmpp"
2883 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2884 vp9_vaapi_encoder_select="vaapi_encode"
2885 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2886 wmv3_crystalhd_decoder_select="crystalhd"
2887
2888 # parsers
2889 aac_parser_select="adts_header"
2890 h264_parser_select="golomb h264dsp h264parse"
2891 hevc_parser_select="hevcparse"
2892 mpegaudio_parser_select="mpegaudioheader"
2893 mpegvideo_parser_select="mpegvideo"
2894 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2895 vc1_parser_select="vc1dsp"
2896
2897 # bitstream_filters
2898 aac_adtstoasc_bsf_select="adts_header"
2899 h264_metadata_bsf_select="cbs_h264"
2900 h264_redundant_pps_bsf_select="cbs_h264"
2901 hevc_metadata_bsf_select="cbs_h265"
2902 mjpeg2jpeg_bsf_select="jpegtables"
2903 mpeg2_metadata_bsf_select="cbs_mpeg2"
2904 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2905
2906 # external libraries
2907 aac_at_decoder_deps="audiotoolbox"
2908 aac_at_decoder_select="aac_adtstoasc_bsf"
2909 ac3_at_decoder_deps="audiotoolbox"
2910 ac3_at_decoder_select="ac3_parser"
2911 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2912 alac_at_decoder_deps="audiotoolbox"
2913 amr_nb_at_decoder_deps="audiotoolbox"
2914 avisynth_deps_any="libdl LoadLibrary"
2915 avisynth_demuxer_deps="avisynth"
2916 avisynth_demuxer_select="riffdec"
2917 eac3_at_decoder_deps="audiotoolbox"
2918 eac3_at_decoder_select="ac3_parser"
2919 gsm_ms_at_decoder_deps="audiotoolbox"
2920 ilbc_at_decoder_deps="audiotoolbox"
2921 mp1_at_decoder_deps="audiotoolbox"
2922 mp2_at_decoder_deps="audiotoolbox"
2923 mp3_at_decoder_deps="audiotoolbox"
2924 mp1_at_decoder_select="mpegaudioheader"
2925 mp2_at_decoder_select="mpegaudioheader"
2926 mp3_at_decoder_select="mpegaudioheader"
2927 pcm_alaw_at_decoder_deps="audiotoolbox"
2928 pcm_mulaw_at_decoder_deps="audiotoolbox"
2929 qdmc_at_decoder_deps="audiotoolbox"
2930 qdm2_at_decoder_deps="audiotoolbox"
2931 aac_at_encoder_deps="audiotoolbox"
2932 aac_at_encoder_select="audio_frame_queue"
2933 alac_at_encoder_deps="audiotoolbox"
2934 alac_at_encoder_select="audio_frame_queue"
2935 ilbc_at_encoder_deps="audiotoolbox"
2936 ilbc_at_encoder_select="audio_frame_queue"
2937 pcm_alaw_at_encoder_deps="audiotoolbox"
2938 pcm_alaw_at_encoder_select="audio_frame_queue"
2939 pcm_mulaw_at_encoder_deps="audiotoolbox"
2940 pcm_mulaw_at_encoder_select="audio_frame_queue"
2941 chromaprint_muxer_deps="chromaprint"
2942 h264_videotoolbox_encoder_deps="pthreads"
2943 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2944 hevc_videotoolbox_encoder_deps="pthreads"
2945 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2946 libcelt_decoder_deps="libcelt"
2947 libfdk_aac_decoder_deps="libfdk_aac"
2948 libfdk_aac_encoder_deps="libfdk_aac"
2949 libfdk_aac_encoder_select="audio_frame_queue"
2950 libgme_demuxer_deps="libgme"
2951 libgsm_decoder_deps="libgsm"
2952 libgsm_encoder_deps="libgsm"
2953 libgsm_ms_decoder_deps="libgsm"
2954 libgsm_ms_encoder_deps="libgsm"
2955 libilbc_decoder_deps="libilbc"
2956 libilbc_encoder_deps="libilbc"
2957 libkvazaar_encoder_deps="libkvazaar"
2958 libmodplug_demuxer_deps="libmodplug"
2959 libmp3lame_encoder_deps="libmp3lame"
2960 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2961 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2962 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2963 libopencore_amrnb_encoder_select="audio_frame_queue"
2964 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2965 libopenh264_decoder_deps="libopenh264"
2966 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2967 libopenh264_encoder_deps="libopenh264"
2968 libopenjpeg_decoder_deps="libopenjpeg"
2969 libopenjpeg_encoder_deps="libopenjpeg"
2970 libopenmpt_demuxer_deps="libopenmpt"
2971 libopus_decoder_deps="libopus"
2972 libopus_encoder_deps="libopus"
2973 libopus_encoder_select="audio_frame_queue"
2974 librsvg_decoder_deps="librsvg"
2975 libshine_encoder_deps="libshine"
2976 libshine_encoder_select="audio_frame_queue"
2977 libspeex_decoder_deps="libspeex"
2978 libspeex_encoder_deps="libspeex"
2979 libspeex_encoder_select="audio_frame_queue"
2980 libtheora_encoder_deps="libtheora"
2981 libtwolame_encoder_deps="libtwolame"
2982 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2983 libvorbis_decoder_deps="libvorbis"
2984 libvorbis_encoder_deps="libvorbis libvorbisenc"
2985 libvorbis_encoder_select="audio_frame_queue"
2986 libvpx_vp8_decoder_deps="libvpx"
2987 libvpx_vp8_encoder_deps="libvpx"
2988 libvpx_vp9_decoder_deps="libvpx"
2989 libvpx_vp9_encoder_deps="libvpx"
2990 libwavpack_encoder_deps="libwavpack"
2991 libwavpack_encoder_select="audio_frame_queue"
2992 libwebp_encoder_deps="libwebp"
2993 libwebp_anim_encoder_deps="libwebp"
2994 libx262_encoder_deps="libx262"
2995 libx264_encoder_deps="libx264"
2996 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2997 libx264rgb_encoder_select="libx264_encoder"
2998 libx265_encoder_deps="libx265"
2999 libxavs_encoder_deps="libxavs"
3000 libxvid_encoder_deps="libxvid"
3001 libzvbi_teletext_decoder_deps="libzvbi"
3002 videotoolbox_suggest="coreservices"
3003 videotoolbox_deps="corefoundation coremedia corevideo"
3004 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3005
3006 # demuxers / muxers
3007 ac3_demuxer_select="ac3_parser"
3008 aiff_muxer_select="iso_media"
3009 asf_demuxer_select="riffdec"
3010 asf_o_demuxer_select="riffdec"
3011 asf_muxer_select="riffenc"
3012 asf_stream_muxer_select="asf_muxer"
3013 avi_demuxer_select="iso_media riffdec exif"
3014 avi_muxer_select="riffenc"
3015 caf_demuxer_select="iso_media riffdec"
3016 caf_muxer_select="iso_media"
3017 dash_muxer_select="mp4_muxer"
3018 dash_demuxer_deps="libxml2"
3019 dirac_demuxer_select="dirac_parser"
3020 dts_demuxer_select="dca_parser"
3021 dtshd_demuxer_select="dca_parser"
3022 dv_demuxer_select="dvprofile"
3023 dv_muxer_select="dvprofile"
3024 dxa_demuxer_select="riffdec"
3025 eac3_demuxer_select="ac3_parser"
3026 f4v_muxer_select="mov_muxer"
3027 fifo_muxer_deps="threads"
3028 flac_demuxer_select="flac_parser"
3029 hds_muxer_select="flv_muxer"
3030 hls_muxer_select="mpegts_muxer"
3031 hls_muxer_suggest="gcrypt openssl"
3032 image2_alias_pix_demuxer_select="image2_demuxer"
3033 image2_brender_pix_demuxer_select="image2_demuxer"
3034 ipod_muxer_select="mov_muxer"
3035 ismv_muxer_select="mov_muxer"
3036 matroska_audio_muxer_select="matroska_muxer"
3037 matroska_demuxer_select="iso_media riffdec"
3038 matroska_demuxer_suggest="bzlib lzo zlib"
3039 matroska_muxer_select="iso_media riffenc"
3040 mmf_muxer_select="riffenc"
3041 mov_demuxer_select="iso_media riffdec"
3042 mov_demuxer_suggest="zlib"
3043 mov_muxer_select="iso_media riffenc rtpenc_chain"
3044 mp3_demuxer_select="mpegaudio_parser"
3045 mp3_muxer_select="mpegaudioheader"
3046 mp4_muxer_select="mov_muxer"
3047 mpegts_demuxer_select="iso_media"
3048 mpegts_muxer_select="adts_muxer latm_muxer"
3049 mpegtsraw_demuxer_select="mpegts_demuxer"
3050 mxf_d10_muxer_select="mxf_muxer"
3051 mxf_opatom_muxer_select="mxf_muxer"
3052 nut_muxer_select="riffenc"
3053 nuv_demuxer_select="riffdec"
3054 oga_muxer_select="ogg_muxer"
3055 ogg_demuxer_select="dirac_parse"
3056 ogv_muxer_select="ogg_muxer"
3057 opus_muxer_select="ogg_muxer"
3058 psp_muxer_select="mov_muxer"
3059 rtp_demuxer_select="sdp_demuxer"
3060 rtp_muxer_select="golomb"
3061 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3062 rtsp_demuxer_select="http_protocol rtpdec"
3063 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3064 sap_demuxer_select="sdp_demuxer"
3065 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3066 sdp_demuxer_select="rtpdec"
3067 smoothstreaming_muxer_select="ismv_muxer"
3068 spdif_demuxer_select="adts_header"
3069 spdif_muxer_select="adts_header"
3070 spx_muxer_select="ogg_muxer"
3071 swf_demuxer_suggest="zlib"
3072 tak_demuxer_select="tak_parser"
3073 tg2_muxer_select="mov_muxer"
3074 tgp_muxer_select="mov_muxer"
3075 vobsub_demuxer_select="mpegps_demuxer"
3076 w64_demuxer_select="wav_demuxer"
3077 w64_muxer_select="wav_muxer"
3078 wav_demuxer_select="riffdec"
3079 wav_muxer_select="riffenc"
3080 webm_muxer_select="iso_media riffenc"
3081 webm_dash_manifest_demuxer_select="matroska_demuxer"
3082 wtv_demuxer_select="mpegts_demuxer riffdec"
3083 wtv_muxer_select="mpegts_muxer riffenc"
3084 xmv_demuxer_select="riffdec"
3085 xwma_demuxer_select="riffdec"
3086
3087 # indevs / outdevs
3088 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3089 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3090 alsa_indev_deps="alsa"
3091 alsa_outdev_deps="alsa"
3092 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3093 avfoundation_indev_suggest="coregraphics applicationservices"
3094 avfoundation_indev_extralibs="-framework Foundation"
3095 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3096 caca_outdev_deps="libcaca"
3097 decklink_deps_any="libdl LoadLibrary"
3098 decklink_indev_deps="decklink threads"
3099 decklink_indev_extralibs="-lstdc++"
3100 decklink_outdev_deps="decklink threads"
3101 decklink_outdev_extralibs="-lstdc++"
3102 libndi_newtek_indev_deps="libndi_newtek"
3103 libndi_newtek_indev_extralibs="-lndi"
3104 libndi_newtek_outdev_deps="libndi_newtek"
3105 libndi_newtek_outdev_extralibs="-lndi"
3106 dshow_indev_deps="IBaseFilter"
3107 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3108 fbdev_indev_deps="linux_fb_h"
3109 fbdev_outdev_deps="linux_fb_h"
3110 gdigrab_indev_deps="CreateDIBSection"
3111 gdigrab_indev_extralibs="-lgdi32"
3112 gdigrab_indev_select="bmp_decoder"
3113 iec61883_indev_deps="libiec61883"
3114 jack_indev_deps="libjack"
3115 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3116 kmsgrab_indev_deps="libdrm"
3117 lavfi_indev_deps="avfilter"
3118 libcdio_indev_deps="libcdio"
3119 libdc1394_indev_deps="libdc1394"
3120 openal_indev_deps="openal"
3121 opengl_outdev_deps="opengl"
3122 oss_indev_deps_any="sys_soundcard_h"
3123 oss_outdev_deps_any="sys_soundcard_h"
3124 pulse_indev_deps="libpulse"
3125 pulse_outdev_deps="libpulse"
3126 sdl2_outdev_deps="sdl2"
3127 sndio_indev_deps="sndio"
3128 sndio_outdev_deps="sndio"
3129 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3130 v4l2_indev_suggest="libv4l2"
3131 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3132 v4l2_outdev_suggest="libv4l2"
3133 vfwcap_indev_deps="vfw32 vfwcap_defines"
3134 xcbgrab_indev_deps="libxcb"
3135 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3136 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3137 xv_outdev_extralibs="-lXv -lX11 -lXext"
3138
3139 # protocols
3140 async_protocol_deps="threads"
3141 bluray_protocol_deps="libbluray"
3142 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3143 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3144 ffrtmpcrypt_protocol_select="tcp_protocol"
3145 ffrtmphttp_protocol_conflict="librtmp_protocol"
3146 ffrtmphttp_protocol_select="http_protocol"
3147 ftp_protocol_select="tcp_protocol"
3148 gopher_protocol_select="network"
3149 http_protocol_select="tcp_protocol"
3150 http_protocol_suggest="zlib"
3151 httpproxy_protocol_select="tcp_protocol"
3152 httpproxy_protocol_suggest="zlib"
3153 https_protocol_select="tls_protocol"
3154 https_protocol_suggest="zlib"
3155 icecast_protocol_select="http_protocol"
3156 librtmp_protocol_deps="librtmp"
3157 librtmpe_protocol_deps="librtmp"
3158 librtmps_protocol_deps="librtmp"
3159 librtmpt_protocol_deps="librtmp"
3160 librtmpte_protocol_deps="librtmp"
3161 libsmbclient_protocol_deps="libsmbclient gplv3"
3162 libssh_protocol_deps="libssh"
3163 libtls_conflict="openssl gnutls"
3164 mmsh_protocol_select="http_protocol"
3165 mmst_protocol_select="network"
3166 rtmp_protocol_conflict="librtmp_protocol"
3167 rtmp_protocol_select="tcp_protocol"
3168 rtmp_protocol_suggest="zlib"
3169 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3170 rtmpe_protocol_suggest="zlib"
3171 rtmps_protocol_conflict="librtmp_protocol"
3172 rtmps_protocol_select="tls_protocol"
3173 rtmps_protocol_suggest="zlib"
3174 rtmpt_protocol_select="ffrtmphttp_protocol"
3175 rtmpt_protocol_suggest="zlib"
3176 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3177 rtmpte_protocol_suggest="zlib"
3178 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3179 rtmpts_protocol_suggest="zlib"
3180 rtp_protocol_select="udp_protocol"
3181 schannel_conflict="openssl gnutls libtls"
3182 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3183 sctp_protocol_select="network"
3184 securetransport_conflict="openssl gnutls libtls"
3185 srtp_protocol_select="rtp_protocol srtp"
3186 tcp_protocol_select="network"
3187 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3188 tls_protocol_select="tcp_protocol"
3189 udp_protocol_select="network"
3190 udplite_protocol_select="network"
3191 unix_protocol_deps="sys_un_h"
3192 unix_protocol_select="network"
3193
3194 # filters
3195 afftfilt_filter_deps="avcodec"
3196 afftfilt_filter_select="fft"
3197 afir_filter_deps="avcodec"
3198 afir_filter_select="fft"
3199 amovie_filter_deps="avcodec avformat"
3200 aresample_filter_deps="swresample"
3201 ass_filter_deps="libass"
3202 atempo_filter_deps="avcodec"
3203 atempo_filter_select="rdft"
3204 azmq_filter_deps="libzmq"
3205 blackframe_filter_deps="gpl"
3206 boxblur_filter_deps="gpl"
3207 bs2b_filter_deps="libbs2b"
3208 colormatrix_filter_deps="gpl"
3209 convolve_filter_deps="avcodec"
3210 convolve_filter_select="fft"
3211 coreimage_filter_deps="coreimage appkit"
3212 coreimage_filter_extralibs="-framework OpenGL"
3213 coreimagesrc_filter_deps="coreimage appkit"
3214 coreimagesrc_filter_extralibs="-framework OpenGL"
3215 cover_rect_filter_deps="avcodec avformat gpl"
3216 cropdetect_filter_deps="gpl"
3217 deconvolve_filter_deps="avcodec"
3218 deconvolve_filter_select="fft"
3219 deinterlace_qsv_filter_deps="libmfx"
3220 deinterlace_vaapi_filter_deps="vaapi"
3221 delogo_filter_deps="gpl"
3222 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3223 deshake_filter_select="pixelutils"
3224 drawtext_filter_deps="libfreetype"
3225 drawtext_filter_suggest="libfontconfig libfribidi"
3226 elbg_filter_deps="avcodec"
3227 eq_filter_deps="gpl"
3228 fftfilt_filter_deps="avcodec"
3229 fftfilt_filter_select="rdft"
3230 find_rect_filter_deps="avcodec avformat gpl"
3231 firequalizer_filter_deps="avcodec"
3232 firequalizer_filter_select="rdft"
3233 flite_filter_deps="libflite"
3234 framerate_filter_select="pixelutils"
3235 frei0r_filter_deps="frei0r libdl"
3236 frei0r_src_filter_deps="frei0r libdl"
3237 fspp_filter_deps="gpl"
3238 geq_filter_deps="gpl"
3239 histeq_filter_deps="gpl"
3240 hqdn3d_filter_deps="gpl"
3241 interlace_filter_deps="gpl"
3242 kerndeint_filter_deps="gpl"
3243 ladspa_filter_deps="ladspa libdl"
3244 lv2_filter_deps="lv2"
3245 mcdeint_filter_deps="avcodec gpl"
3246 movie_filter_deps="avcodec avformat"
3247 mpdecimate_filter_deps="gpl"
3248 mpdecimate_filter_select="pixelutils"
3249 mptestsrc_filter_deps="gpl"
3250 negate_filter_deps="lut_filter"
3251 nnedi_filter_deps="gpl"
3252 ocr_filter_deps="libtesseract"
3253 ocv_filter_deps="libopencv"
3254 openclsrc_filter_deps="opencl"
3255 overlay_opencl_filter_deps="opencl"
3256 overlay_qsv_filter_deps="libmfx"
3257 overlay_qsv_filter_select="qsvvpp"
3258 owdenoise_filter_deps="gpl"
3259 pan_filter_deps="swresample"
3260 perspective_filter_deps="gpl"
3261 phase_filter_deps="gpl"
3262 pp7_filter_deps="gpl"
3263 pp_filter_deps="gpl postproc"
3264 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3265 program_opencl_filter_deps="opencl"
3266 pullup_filter_deps="gpl"
3267 removelogo_filter_deps="avcodec avformat swscale"
3268 repeatfields_filter_deps="gpl"
3269 resample_filter_deps="avresample"
3270 rubberband_filter_deps="librubberband"
3271 sab_filter_deps="gpl swscale"
3272 scale2ref_filter_deps="swscale"
3273 scale_filter_deps="swscale"
3274 scale_qsv_filter_deps="libmfx"
3275 select_filter_select="pixelutils"
3276 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3277 showcqt_filter_deps="avcodec avformat swscale"
3278 showcqt_filter_suggest="libfontconfig libfreetype"
3279 showcqt_filter_select="fft"
3280 showfreqs_filter_deps="avcodec"
3281 showfreqs_filter_select="fft"
3282 showspectrum_filter_deps="avcodec"
3283 showspectrum_filter_select="fft"
3284 showspectrumpic_filter_deps="avcodec"
3285 showspectrumpic_filter_select="fft"
3286 signature_filter_deps="gpl avcodec avformat"
3287 smartblur_filter_deps="gpl swscale"
3288 sofalizer_filter_deps="libmysofa avcodec"
3289 sofalizer_filter_select="fft"
3290 spectrumsynth_filter_deps="avcodec"
3291 spectrumsynth_filter_select="fft"
3292 spp_filter_deps="gpl avcodec"
3293 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3294 stereo3d_filter_deps="gpl"
3295 subtitles_filter_deps="avformat avcodec libass"
3296 super2xsai_filter_deps="gpl"
3297 pixfmts_super2xsai_test_deps="super2xsai_filter"
3298 tinterlace_filter_deps="gpl"
3299 tinterlace_merge_test_deps="tinterlace_filter"
3300 tinterlace_pad_test_deps="tinterlace_filter"
3301 tonemap_filter_deps="const_nan"
3302 unsharp_opencl_filter_deps="opencl"
3303 uspp_filter_deps="gpl avcodec"
3304 vaguedenoiser_filter_deps="gpl"
3305 vidstabdetect_filter_deps="libvidstab"
3306 vidstabtransform_filter_deps="libvidstab"
3307 libvmaf_filter_deps="libvmaf pthreads"
3308 zmq_filter_deps="libzmq"
3309 zoompan_filter_deps="swscale"
3310 zscale_filter_deps="libzimg const_nan"
3311 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3312 vpp_qsv_filter_deps="libmfx"
3313 vpp_qsv_filter_select="qsvvpp"
3314
3315 # examples
3316 avio_dir_cmd_deps="avformat avutil"
3317 avio_reading_deps="avformat avcodec avutil"
3318 decode_audio_example_deps="avcodec avutil"
3319 decode_video_example_deps="avcodec avutil"
3320 demuxing_decoding_example_deps="avcodec avformat avutil"
3321 encode_audio_example_deps="avcodec avutil"
3322 encode_video_example_deps="avcodec avutil"
3323 extract_mvs_example_deps="avcodec avformat avutil"
3324 filter_audio_example_deps="avfilter avutil"
3325 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3326 filtering_video_example_deps="avfilter avcodec avformat avutil"
3327 http_multiclient_example_deps="avformat avutil fork"
3328 hw_decode_example_deps="avcodec avformat avutil"
3329 metadata_example_deps="avformat avutil"
3330 muxing_example_deps="avcodec avformat avutil swscale"
3331 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3332 remuxing_example_deps="avcodec avformat avutil"
3333 resampling_audio_example_deps="avutil swresample"
3334 scaling_video_example_deps="avutil swscale"
3335 transcode_aac_example_deps="avcodec avformat swresample"
3336 transcoding_example_deps="avfilter avcodec avformat avutil"
3337 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3338 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3339
3340 # EXTRALIBS_LIST
3341 cpu_init_extralibs="pthreads_extralibs"
3342 cws2fws_extralibs="zlib_extralibs"
3343
3344 # libraries, in linking order
3345 avcodec_deps="avutil"
3346 avcodec_suggest="libm"
3347 avcodec_select="null_bsf"
3348 avdevice_deps="avformat avcodec avutil"
3349 avdevice_suggest="libm"
3350 avfilter_deps="avutil"
3351 avfilter_suggest="libm"
3352 avformat_deps="avcodec avutil"
3353 avformat_suggest="libm network zlib"
3354 avresample_deps="avutil"
3355 avresample_suggest="libm"
3356 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3357 postproc_deps="avutil gpl"
3358 postproc_suggest="libm"
3359 swresample_deps="avutil"
3360 swresample_suggest="libm libsoxr"
3361 swscale_deps="avutil"
3362 swscale_suggest="libm"
3363
3364 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3365 avfilter_extralibs="pthreads_extralibs"
3366 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3367
3368 # programs
3369 ffmpeg_deps="avcodec avfilter avformat swresample"
3370 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3371                null_filter
3372                trim_filter"
3373 ffmpeg_suggest="ole32 psapi shell32"
3374 ffplay_deps="avcodec avformat swscale swresample sdl2"
3375 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3376 ffplay_suggest="shell32"
3377 ffprobe_deps="avcodec avformat"
3378 ffprobe_suggest="shell32"
3379
3380 # documentation
3381 podpages_deps="perl"
3382 manpages_deps="perl pod2man"
3383 htmlpages_deps="perl"
3384 htmlpages_deps_any="makeinfo_html texi2html"
3385 txtpages_deps="perl makeinfo"
3386 doc_deps_any="manpages htmlpages podpages txtpages"
3387
3388 # default parameters
3389
3390 logfile="ffbuild/config.log"
3391
3392 # installation paths
3393 prefix_default="/usr/local"
3394 bindir_default='${prefix}/bin'
3395 datadir_default='${prefix}/share/ffmpeg'
3396 docdir_default='${prefix}/share/doc/ffmpeg'
3397 incdir_default='${prefix}/include'
3398 libdir_default='${prefix}/lib'
3399 mandir_default='${prefix}/share/man'
3400
3401 # toolchain
3402 ar_default="ar"
3403 cc_default="gcc"
3404 cxx_default="g++"
3405 host_cc_default="gcc"
3406 doxygen_default="doxygen"
3407 install="install"
3408 ln_s_default="ln -s -f"
3409 nm_default="nm -g"
3410 pkg_config_default=pkg-config
3411 ranlib_default="ranlib"
3412 strip_default="strip"
3413 version_script='--version-script'
3414 objformat="elf32"
3415 x86asmexe_default="nasm"
3416 windres_default="windres"
3417 nvcc_default="nvcc"
3418 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3419 striptype="direct"
3420
3421 # OS
3422 target_os_default=$(tolower $(uname -s))
3423 host_os=$target_os_default
3424
3425 # machine
3426 if test "$target_os_default" = aix; then
3427     arch_default=$(uname -p)
3428     strip_default="strip -X32_64"
3429 else
3430     arch_default=$(uname -m)
3431 fi
3432 cpu="generic"
3433 intrinsics="none"
3434
3435 # configurable options
3436 enable $PROGRAM_LIST
3437 enable $DOCUMENT_LIST
3438 enable $EXAMPLE_LIST
3439 enable $(filter_out avresample $LIBRARY_LIST)
3440 enable stripping
3441
3442 enable asm
3443 enable debug
3444 enable doc
3445 enable faan faandct faanidct
3446 enable optimizations
3447 enable runtime_cpudetect
3448 enable safe_bitstream_reader
3449 enable static
3450 enable swscale_alpha
3451 enable valgrind_backtrace
3452
3453 sws_max_filter_size_default=256
3454 set_default sws_max_filter_size
3455
3456 # internal components are enabled by default
3457 enable $EXTRALIBS_LIST
3458
3459 # Avoid external, non-system, libraries getting enabled by dependency resolution
3460 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3461
3462 # build settings
3463 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3464 LIBPREF="lib"
3465 LIBSUF=".a"
3466 FULLNAME='$(NAME)$(BUILDSUF)'
3467 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3468 SLIBPREF="lib"
3469 SLIBSUF=".so"
3470 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3471 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3472 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3473 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3474 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3475 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3476 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3477
3478 asflags_filter=echo
3479 cflags_filter=echo
3480 ldflags_filter=echo
3481
3482 AS_C='-c'
3483 AS_O='-o $@'
3484 CC_C='-c'
3485 CC_E='-E -o $@'
3486 CC_O='-o $@'
3487 CXX_C='-c'
3488 CXX_O='-o $@'
3489 OBJCC_C='-c'
3490 OBJCC_E='-E -o $@'
3491 OBJCC_O='-o $@'
3492 X86ASM_O='-o $@'
3493 LD_O='-o $@'
3494 LD_LIB='-l%'
3495 LD_PATH='-L'
3496 HOSTCC_C='-c'
3497 HOSTCC_E='-E -o $@'
3498 HOSTCC_O='-o $@'
3499 HOSTLD_O='-o $@'
3500 NVCC_C='-c'
3501 NVCC_O='-o $@'
3502
3503 host_extralibs='-lm'
3504 host_cflags_filter=echo
3505 host_ldflags_filter=echo
3506
3507 target_path='$(CURDIR)'
3508
3509 # since the object filename is not given with the -MM flag, the compiler
3510 # is only able to print the basename, and we must add the path ourselves
3511 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3512 DEPFLAGS='-MM'
3513
3514 mkdir -p ffbuild
3515
3516 # find source path
3517 if test -f configure; then
3518     source_path=.
3519 else
3520     source_path=$(cd $(dirname "$0"); pwd)
3521     case "$source_path" in
3522         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3523     esac
3524     test -e "$source_path/config.h" &&
3525         die "Out of tree builds are impossible with config.h in source dir."
3526 fi
3527
3528 for v in "$@"; do
3529     r=${v#*=}
3530     l=${v%"$r"}
3531     r=$(sh_quote "$r")
3532     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3533 done
3534
3535 find_things(){
3536     thing=$1
3537     pattern=$2
3538     file=$source_path/$3
3539     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3540 }
3541
3542 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3543
3544 find_things_extern(){
3545     thing=$1
3546     pattern=$2
3547     file=$source_path/$3
3548     out=${4:-$thing}
3549     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3550 }
3551
3552 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3553 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3554 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3555 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3556 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3557 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3558 CODEC_LIST="
3559     $ENCODER_LIST
3560     $DECODER_LIST
3561 "
3562 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3563 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3564 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3565 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3566
3567 AVCODEC_COMPONENTS_LIST="
3568     $BSF_LIST
3569     $DECODER_LIST
3570     $ENCODER_LIST
3571     $HWACCEL_LIST
3572     $PARSER_LIST
3573 "
3574
3575 AVDEVICE_COMPONENTS_LIST="
3576     $INDEV_LIST
3577     $OUTDEV_LIST
3578 "
3579
3580 AVFILTER_COMPONENTS_LIST="
3581     $FILTER_LIST
3582 "
3583
3584 AVFORMAT_COMPONENTS_LIST="
3585     $DEMUXER_LIST
3586     $MUXER_LIST
3587     $PROTOCOL_LIST
3588 "
3589
3590 ALL_COMPONENTS="
3591     $AVCODEC_COMPONENTS_LIST
3592     $AVDEVICE_COMPONENTS_LIST
3593     $AVFILTER_COMPONENTS_LIST
3594     $AVFORMAT_COMPONENTS_LIST
3595 "
3596
3597 for n in $COMPONENT_LIST; do
3598     v=$(toupper ${n%s})_LIST
3599     eval enable \$$v
3600     eval ${n}_if_any="\$$v"
3601 done
3602
3603 enable $ARCH_EXT_LIST
3604
3605 die_unknown(){
3606     echo "Unknown option \"$1\"."
3607     echo "See $0 --help for available options."
3608     exit 1
3609 }
3610
3611 print_in_columns() {
3612     cols=$(expr $ncols / 24)
3613     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3614 }
3615
3616 show_list() {
3617     suffix=_$1
3618     shift
3619     echo $* | sed s/$suffix//g | print_in_columns
3620     exit 0
3621 }
3622
3623 rand_list(){
3624     IFS=', '
3625     set -- $*
3626     unset IFS
3627     for thing; do
3628         comp=${thing%:*}
3629         prob=${thing#$comp}
3630         prob=${prob#:}
3631         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3632         echo "prob ${prob:-0.5}"
3633         printf '%s\n' $comp
3634     done
3635 }
3636
3637 do_random(){
3638     action=$1
3639     shift
3640     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3641     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3642 }
3643
3644 for opt do
3645     optval="${opt#*=}"
3646     case "$opt" in
3647         --extra-ldflags=*)
3648             add_ldflags $optval
3649         ;;
3650         --extra-ldexeflags=*)
3651             add_ldexeflags $optval
3652         ;;
3653         --extra-ldsoflags=*)
3654             add_ldsoflags $optval
3655         ;;
3656         --extra-ldlibflags=*)
3657             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3658                  "removed in the future. Use --extra-ldsoflags instead."
3659             add_ldsoflags $optval
3660         ;;
3661         --extra-libs=*)
3662             add_extralibs $optval
3663         ;;
3664         --disable-devices)
3665             disable $INDEV_LIST $OUTDEV_LIST
3666         ;;
3667         --enable-debug=*)
3668             debuglevel="$optval"
3669         ;;
3670         --disable-programs)
3671             disable $PROGRAM_LIST
3672         ;;
3673         --disable-everything)
3674             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3675         ;;
3676         --disable-all)
3677             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3678             disable $LIBRARY_LIST $PROGRAM_LIST doc
3679             enable avutil
3680         ;;
3681         --enable-random|--disable-random)
3682             action=${opt%%-random}
3683             do_random ${action#--} $COMPONENT_LIST
3684         ;;
3685         --enable-random=*|--disable-random=*)
3686             action=${opt%%-random=*}
3687             do_random ${action#--} $optval
3688         ;;
3689         --enable-sdl)
3690             enable sdl2
3691         ;;
3692         --enable-*=*|--disable-*=*)
3693             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3694             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3695             eval list=\$$(toupper $thing)_LIST
3696             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3697             list=$(filter "$name" $list)
3698             [ "$list" = "" ] && warn "Option $opt did not match anything"
3699             $action $list
3700         ;;
3701         --enable-yasm|--disable-yasm)
3702             warn "The ${opt} option is only provided for compatibility and will be\n"\
3703                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3704             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3705         ;;
3706         --yasmexe=*)
3707             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3708                  "removed in the future. Use --x86asmexe instead."
3709             x86asmexe="$optval"
3710         ;;
3711         --enable-?*|--disable-?*)
3712             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3713             if is_in $option $COMPONENT_LIST; then
3714                 test $action = disable && action=unset
3715                 eval $action \$$(toupper ${option%s})_LIST
3716             elif is_in $option $CMDLINE_SELECT; then
3717                 $action $option
3718             else
3719                 die_unknown $opt
3720             fi
3721         ;;
3722         --list-*)
3723             NAME="${opt#--list-}"
3724             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3725             NAME=${NAME%s}
3726             eval show_list $NAME \$$(toupper $NAME)_LIST
3727         ;;
3728         --help|-h) show_help
3729         ;;
3730         --quiet|-q) quiet=yes
3731         ;;
3732         --fatal-warnings) enable fatal_warnings
3733         ;;
3734         --libfuzzer=*)
3735             libfuzzer_path="$optval"
3736         ;;
3737         *)
3738             optname="${opt%%=*}"
3739             optname="${optname#--}"
3740             optname=$(echo "$optname" | sed 's/-/_/g')
3741             if is_in $optname $CMDLINE_SET; then
3742                 eval $optname='$optval'
3743             elif is_in $optname $CMDLINE_APPEND; then
3744                 append $optname "$optval"
3745             else
3746                 die_unknown $opt
3747             fi
3748         ;;
3749     esac
3750 done
3751
3752 for e in $env; do
3753     eval "export $e"
3754 done
3755
3756 if disabled autodetect; then
3757
3758     # Unless iconv is explicitely disabled by the user, we still want to probe
3759     # for the iconv from the libc.
3760     disabled iconv || enable libc_iconv
3761
3762     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3763     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3764 fi
3765 # Mark specifically enabled, but normally autodetected libraries as requested.
3766 for lib in $AUTODETECT_LIBS; do
3767     enabled $lib && request $lib
3768 done
3769 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3770 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3771 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3772
3773 disabled logging && logfile=/dev/null
3774
3775 # command line configuration sanity checks
3776
3777 # we need to build at least one lib type
3778 if ! enabled_any static shared; then
3779     cat <<EOF
3780 At least one library type must be built.
3781 Specify --enable-static to build the static libraries or --enable-shared to
3782 build the shared libraries as well. To only build the shared libraries specify
3783 --disable-static in addition to --enable-shared.
3784 EOF
3785     exit 1
3786 fi
3787
3788 die_license_disabled() {
3789     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3790 }
3791
3792 die_license_disabled_gpl() {
3793     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3794 }
3795
3796 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3797 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3798
3799 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3800 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3801
3802 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3803
3804 if enabled nonfree; then
3805     license="nonfree and unredistributable"
3806 elif enabled gplv3; then
3807     license="GPL version 3 or later"
3808 elif enabled lgplv3; then
3809     license="LGPL version 3 or later"
3810 elif enabled gpl; then
3811     license="GPL version 2 or later"
3812 else
3813     license="LGPL version 2.1 or later"
3814 fi
3815
3816 enabled_all gnutls openssl &&
3817     die "GnuTLS and OpenSSL must not be enabled at the same time."
3818
3819 # Disable all the library-specific components if the library itself
3820 # is disabled, see AVCODEC_LIST and following _LIST variables.
3821
3822 disable_components(){
3823     disabled ${1} && disable $(
3824         eval components="\$$(toupper ${1})_COMPONENTS"
3825         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3826     )
3827 }
3828
3829 map 'disable_components $v' $LIBRARY_LIST
3830
3831 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3832 set >> $logfile
3833
3834 test -n "$valgrind" && toolchain="valgrind-memcheck"
3835
3836 enabled ossfuzz && {
3837     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3838     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3839 }
3840
3841 case "$toolchain" in
3842     *-asan)
3843         cc_default="${toolchain%-asan}"
3844         add_cflags  -fsanitize=address
3845         add_ldflags -fsanitize=address
3846     ;;
3847     *-msan)
3848         cc_default="${toolchain%-msan}"
3849         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3850         add_ldflags -fsanitize=memory
3851     ;;
3852     *-tsan)
3853         cc_default="${toolchain%-tsan}"
3854         add_cflags  -fsanitize=thread -fPIE
3855         add_ldflags -fsanitize=thread -pie
3856         case "$toolchain" in
3857             gcc-tsan)
3858                 add_cflags  -fPIC
3859                 add_ldflags -fPIC
3860                 ;;
3861         esac
3862     ;;
3863     *-usan)
3864         cc_default="${toolchain%-usan}"
3865         add_cflags  -fsanitize=undefined
3866         add_ldflags -fsanitize=undefined
3867     ;;
3868     valgrind-*)
3869         target_exec_default="valgrind"
3870         case "$toolchain" in
3871             valgrind-massif)
3872                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3873                 ;;
3874             valgrind-memcheck)
3875                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3876                 ;;
3877         esac
3878     ;;
3879     msvc)
3880         # Check whether the current MSVC version needs the C99 converter.
3881         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3882         # support enough of C99 to build ffmpeg. Default to the new
3883         # behaviour if the regexp was unable to match anything, since this
3884         # successfully parses the version number of existing supported
3885         # versions that require the converter (MSVC 2010 and 2012).
3886         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3887         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3888             cc_default="cl"
3889             cxx_default="cl"
3890         else
3891             cc_default="c99wrap cl"
3892             cxx_default="c99wrap cl"
3893         fi
3894         ld_default="$source_path/compat/windows/mslink"
3895         nm_default="dumpbin -symbols"
3896         ar_default="lib"
3897         case "$arch" in
3898         aarch64|arm64)
3899             as_default="armasm64"
3900             ;;
3901         arm*)
3902             as_default="armasm"
3903             ;;
3904         esac
3905         target_os_default="win32"
3906         # Use a relative path for TMPDIR. This makes sure all the
3907         # ffconf temp files are written with a relative path, avoiding
3908         # issues with msys/win32 path conversion for MSVC parameters
3909         # such as -Fo<file> or -out:<file>.
3910         TMPDIR=.
3911     ;;
3912     icl)
3913         cc_default="icl"
3914         ld_default="xilink"
3915         nm_default="dumpbin -symbols"
3916         ar_default="xilib"
3917         target_os_default="win32"
3918         TMPDIR=.
3919     ;;
3920     gcov)
3921         add_cflags  -fprofile-arcs -ftest-coverage
3922         add_ldflags -fprofile-arcs -ftest-coverage
3923     ;;
3924     llvm-cov)
3925         add_cflags -fprofile-arcs -ftest-coverage
3926         add_ldflags --coverage
3927     ;;
3928     hardened)
3929         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3930         add_cflags   -fno-strict-overflow -fstack-protector-all
3931         add_ldflags  -Wl,-z,relro -Wl,-z,now
3932         add_cflags   -fPIE
3933         add_ldexeflags -fPIE -pie
3934     ;;
3935     ?*)
3936         die "Unknown toolchain $toolchain"
3937     ;;
3938 esac
3939
3940 if test -n "$cross_prefix"; then
3941     test -n "$arch" && test -n "$target_os" ||
3942         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3943     enable cross_compile
3944 fi
3945
3946 ar_default="${cross_prefix}${ar_default}"
3947 cc_default="${cross_prefix}${cc_default}"
3948 cxx_default="${cross_prefix}${cxx_default}"
3949 nm_default="${cross_prefix}${nm_default}"
3950 pkg_config_default="${cross_prefix}${pkg_config_default}"
3951 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3952     ranlib_default="${cross_prefix}${ranlib_default} -D"
3953 else
3954     ranlib_default="${cross_prefix}${ranlib_default}"
3955 fi
3956 strip_default="${cross_prefix}${strip_default}"
3957 windres_default="${cross_prefix}${windres_default}"
3958
3959 sysinclude_default="${sysroot}/usr/include"
3960
3961 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3962     target_exec target_os x86asmexe nvcc
3963 enabled cross_compile || host_cc_default=$cc
3964 set_default host_cc
3965
3966 pkg_config_fail_message=""
3967 if ! $pkg_config --version >/dev/null 2>&1; then
3968     warn "$pkg_config not found, library detection may fail."
3969     pkg_config=false
3970 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3971     pkg_config_fail_message="
3972 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3973 fi
3974
3975 if test $doxygen != $doxygen_default && \
3976   ! $doxygen --version >/dev/null 2>&1; then
3977     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3978 fi
3979
3980 exesuf() {
3981     case $1 in
3982         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3983     esac
3984 }
3985
3986 EXESUF=$(exesuf $target_os)
3987 HOSTEXESUF=$(exesuf $host_os)
3988
3989 # set temporary file name
3990 : ${TMPDIR:=$TEMPDIR}
3991 : ${TMPDIR:=$TMP}
3992 : ${TMPDIR:=/tmp}
3993
3994 if [ -n "$tempprefix" ] ; then
3995     mktemp(){
3996         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3997         echo "$tmpname"
3998         mkdir "$tmpname"
3999     }
4000 elif ! check_cmd mktemp -u XXXXXX; then
4001     # simple replacement for missing mktemp
4002     # NOT SAFE FOR GENERAL USE
4003     mktemp(){
4004         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4005         echo "$tmpname"
4006         mkdir "$tmpname"
4007     }
4008 fi
4009
4010 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4011     die "Unable to create temporary directory in $TMPDIR."
4012
4013 tmpfile(){
4014     tmp="${FFTMPDIR}/test"$2
4015     (set -C; exec > $tmp) 2> /dev/null ||
4016         die "Unable to create temporary file in $FFTMPDIR."
4017     eval $1=$tmp
4018 }
4019
4020 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4021 trap 'exit 2' INT
4022
4023 tmpfile TMPASM .asm
4024 tmpfile TMPC   .c
4025 tmpfile TMPCPP .cpp
4026 tmpfile TMPE   $EXESUF
4027 tmpfile TMPH   .h
4028 tmpfile TMPM   .m
4029 tmpfile TMPO   .o
4030 tmpfile TMPS   .S
4031 tmpfile TMPSH  .sh
4032 tmpfile TMPV   .ver
4033
4034 unset -f mktemp
4035
4036 chmod +x $TMPE
4037
4038 # make sure we can execute files in $TMPDIR
4039 cat > $TMPSH 2>> $logfile <<EOF
4040 #! /bin/sh
4041 EOF
4042 chmod +x $TMPSH >> $logfile 2>&1
4043 if ! $TMPSH >> $logfile 2>&1; then
4044     cat <<EOF
4045 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4046 variable to another directory and make sure that it is not mounted noexec.
4047 EOF
4048     die "Sanity test failed."
4049 fi
4050
4051 armasm_flags(){
4052     for flag; do
4053         case $flag in
4054             # Filter out MSVC cl.exe options from cflags that shouldn't
4055             # be passed to gas-preprocessor
4056             -M[TD]*)                                            ;;
4057             *)                  echo $flag                      ;;
4058         esac
4059    done
4060 }
4061
4062 cparser_flags(){
4063     for flag; do
4064         case $flag in
4065             -Wno-switch)             echo -Wno-switch-enum ;;
4066             -Wno-format-zero-length) ;;
4067             -Wdisabled-optimization) ;;
4068             -Wno-pointer-sign)       echo -Wno-other ;;
4069             *)                       echo $flag ;;
4070         esac
4071     done
4072 }
4073
4074 msvc_common_flags(){
4075     for flag; do
4076         case $flag in
4077             # In addition to specifying certain flags under the compiler
4078             # specific filters, they must be specified here as well or else the
4079             # generic catch all at the bottom will print the original flag.
4080             -Wall)                ;;
4081             -Wextra)              ;;
4082             -std=c99)             ;;
4083             # Common flags
4084             -fomit-frame-pointer) ;;
4085             -g)                   echo -Z7 ;;
4086             -fno-math-errno)      ;;
4087             -fno-common)          ;;
4088             -fno-signed-zeros)    ;;
4089             -fPIC)                ;;
4090             -mthumb)              ;;
4091             -march=*)             ;;
4092             -lz)                  echo zlib.lib ;;
4093             -lx264)               echo libx264.lib ;;
4094             -lstdc++)             ;;
4095             -l*)                  echo ${flag#-l}.lib ;;
4096             -LARGEADDRESSAWARE)   echo $flag ;;
4097             -L*)                  echo -libpath:${flag#-L} ;;
4098             *)                    echo $flag ;;
4099         esac
4100     done
4101 }
4102
4103 msvc_flags(){
4104     msvc_common_flags "$@"
4105     for flag; do
4106         case $flag in
4107             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4108                                        -wd4554 ;;
4109             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4110                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4111                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4112                                        -wd4307 \
4113                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4114         esac
4115     done
4116 }
4117
4118 icl_flags(){
4119     msvc_common_flags "$@"
4120     for flag; do
4121         case $flag in
4122             # Despite what Intel's documentation says -Wall, which is supported
4123             # on Windows, does enable remarks so disable them here.
4124             -Wall)                echo $flag -Qdiag-disable:remark ;;
4125             -std=c99)             echo -Qstd=c99 ;;
4126             -flto)                echo -ipo ;;
4127         esac
4128     done
4129 }
4130
4131 icc_flags(){
4132     for flag; do
4133         case $flag in
4134             -flto)                echo -ipo ;;
4135             *)                    echo $flag ;;
4136         esac
4137     done
4138 }
4139
4140 suncc_flags(){
4141     for flag; do
4142         case $flag in
4143             -march=*|-mcpu=*)
4144                 case "${flag#*=}" in
4145                     native)                   echo -xtarget=native       ;;
4146                     v9|niagara)               echo -xarch=sparc          ;;
4147                     ultrasparc)               echo -xarch=sparcvis       ;;
4148                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4149                     i586|pentium)             echo -xchip=pentium        ;;
4150                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4151                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4152                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4153                     pentium4*)          echo -xtarget=pentium4           ;;
4154                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4155                     *-sse3)             echo -xarch=sse3                 ;;
4156                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4157                     bonnell)                   echo -xarch=ssse3         ;;
4158                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4159                     westmere)                  echo -xtarget=westmere    ;;
4160                     silvermont)                echo -xarch=sse4_2        ;;
4161                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4162                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4163                                                echo -xarch=avx           ;;
4164                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4165                     btver1)                    echo -xarch=amdsse4a      ;;
4166                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4167                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4168                     k8|opteron|athlon64|athlon-fx)
4169                                                echo -xarch=sse2a         ;;
4170                     athlon*)                   echo -xarch=pentium_proa  ;;
4171                 esac
4172                 ;;
4173             -std=c99)             echo -xc99              ;;
4174             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4175             -fPIC)                echo -KPIC -xcode=pic32 ;;
4176             -W*,*)                echo $flag              ;;
4177             -f*-*|-W*|-mimpure-text)                      ;;
4178             -shared)              echo -G                 ;;
4179             *)                    echo $flag              ;;
4180         esac
4181     done
4182 }
4183
4184 probe_cc(){
4185     pfx=$1
4186     _cc=$2
4187     first=$3
4188
4189     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4190     unset _ld_o _ldflags _ld_lib _ld_path
4191     unset _depflags _DEPCMD _DEPFLAGS
4192     _flags_filter=echo
4193
4194     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4195         true # no-op to avoid reading stdin in following checks
4196     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4197         _type=llvm_gcc
4198         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4199         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4200         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4201         _cflags_speed='-O3'
4202         _cflags_size='-Os'
4203     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4204         _type=gcc
4205         gcc_version=$($_cc --version | head -n1)
4206         gcc_basever=$($_cc -dumpversion)
4207         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4208         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4209         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4210         case $gcc_basever in
4211             2) ;;
4212             2.*) ;;
4213             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4214         esac
4215         if [ "$first" = true ]; then
4216             case $gcc_basever in
4217                 4.2*)
4218                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4219             esac
4220         fi
4221         _cflags_speed='-O3'
4222         _cflags_size='-Os'
4223     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4224         _type=icc
4225         _ident=$($_cc --version | head -n1)
4226         _depflags='-MMD'
4227         _cflags_speed='-O3'
4228         _cflags_size='-Os'
4229         _cflags_noopt='-O1'
4230         _flags_filter=icc_flags
4231     elif $_cc -v 2>&1 | grep -q xlc; then
4232         _type=xlc
4233         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4234         _cflags_speed='-O5'
4235         _cflags_size='-O5 -qcompact'
4236     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4237         test -d "$sysroot" || die "No valid sysroot specified."
4238         _type=armcc
4239         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4240         armcc_conf="$PWD/armcc.conf"
4241         $_cc --arm_linux_configure                 \
4242              --arm_linux_config_file="$armcc_conf" \
4243              --configure_sysroot="$sysroot"        \
4244              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4245              die "Error creating armcc configuration file."
4246         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4247         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4248         as_default="${cross_prefix}gcc"
4249         _depflags='-MMD'
4250         _cflags_speed='-O3'
4251         _cflags_size='-Os'
4252     elif $_cc -v 2>&1 | grep -q clang; then
4253         _type=clang
4254         _ident=$($_cc --version 2>/dev/null | head -n1)
4255         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4256         _cflags_speed='-O3'
4257         _cflags_size='-Oz'
4258     elif $_cc -V 2>&1 | grep -q Sun; then
4259         _type=suncc
4260         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4261         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4262         _DEPFLAGS='-xM1 -xc99'
4263         _ldflags='-std=c99'
4264         _cflags_speed='-O5'
4265         _cflags_size='-O5 -xspace'
4266         _flags_filter=suncc_flags
4267     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4268         _type=pathscale
4269         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4270         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4271         _cflags_speed='-O2'
4272         _cflags_size='-Os'
4273         _flags_filter='filter_out -Wdisabled-optimization'
4274     elif $_cc -v 2>&1 | grep -q Open64; then
4275         _type=open64
4276         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4278         _cflags_speed='-O2'
4279         _cflags_size='-Os'
4280         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4281     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4282         _type=armasm
4283         _ident=$($_cc | head -n1)
4284         # 4509: "This form of conditional instruction is deprecated"
4285         _flags="-nologo -ignore 4509"
4286         _flags_filter=armasm_flags
4287     elif $_cc 2>&1 | grep -q Intel; then
4288         _type=icl
4289         _ident=$($_cc 2>&1 | head -n1)
4290         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4291         # Not only is O3 broken on 13.x+ but it is slower on all previous
4292         # versions (tested) as well.
4293         _cflags_speed="-O2"
4294         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4295         if $_cc 2>&1 | grep -q Linker; then
4296             _ld_o='-out:$@'
4297         else
4298             _ld_o='-Fe$@'
4299         fi
4300         _cc_o='-Fo$@'
4301         _cc_e='-P'
4302         _flags_filter=icl_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305         # -Qdiag-error to make icl error when seeing certain unknown arguments
4306         _flags='-nologo -Qdiag-error:4044,10157'
4307         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4308         # with MSVC which enables it by default.
4309         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4310         disable stripping
4311     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4312         # lld can emulate multiple different linkers; in ms link.exe mode,
4313         # the -? parameter gives the help output which contains an identifyable
4314         # string, while it gives an error in other modes.
4315         _type=lld-link
4316         # The link.exe mode doesn't have a switch for getting the version,
4317         # but we can force it back to gnu mode and get the version from there.
4318         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4319         _ld_o='-out:$@'
4320         _flags_filter=msvc_flags
4321         _ld_lib='lib%.a'
4322         _ld_path='-libpath:'
4323     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4324         _type=msvc
4325         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4326         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4327         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4328         _cflags_speed="-O2"
4329         _cflags_size="-O1"
4330         _cflags_noopt="-O1"
4331         if $_cc -nologo- 2>&1 | grep -q Linker; then
4332             _ld_o='-out:$@'
4333         else
4334             _ld_o='-Fe$@'
4335         fi
4336         _cc_o='-Fo$@'
4337         _cc_e='-P -Fi$@'
4338         _flags_filter=msvc_flags
4339         _ld_lib='lib%.a'
4340         _ld_path='-libpath:'
4341         _flags='-nologo'
4342         disable stripping
4343     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4344         _type=cparser
4345         _ident=$($_cc --version | head -n1)
4346         _depflags='-MMD'
4347         _cflags_speed='-O4'
4348         _cflags_size='-O2'
4349         _flags_filter=cparser_flags
4350     fi
4351
4352     eval ${pfx}_type=\$_type
4353     eval ${pfx}_ident=\$_ident
4354 }
4355
4356 set_ccvars(){
4357     eval ${1}_C=\${_cc_c-\${${1}_C}}
4358     eval ${1}_E=\${_cc_e-\${${1}_E}}
4359     eval ${1}_O=\${_cc_o-\${${1}_O}}
4360
4361     if [ -n "$_depflags" ]; then
4362         eval ${1}_DEPFLAGS=\$_depflags
4363     else
4364         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4365         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4366         eval DEP${1}FLAGS=\$_flags
4367     fi
4368 }
4369
4370 probe_cc cc "$cc" "true"
4371 cflags_filter=$_flags_filter
4372 cflags_speed=$_cflags_speed
4373 cflags_size=$_cflags_size
4374 cflags_noopt=$_cflags_noopt
4375 add_cflags $_flags $_cflags
4376 cc_ldflags=$_ldflags
4377 set_ccvars CC
4378 set_ccvars CXX
4379
4380 probe_cc hostcc "$host_cc"
4381 host_cflags_filter=$_flags_filter
4382 host_cflags_speed=$_cflags_speed
4383 add_host_cflags  $_flags $_cflags
4384 set_ccvars HOSTCC
4385
4386 test -n "$cc_type" && enable $cc_type ||
4387     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4388
4389 : ${as_default:=$cc}
4390 : ${objcc_default:=$cc}
4391 : ${dep_cc_default:=$cc}
4392 : ${ld_default:=$cc}
4393 : ${host_ld_default:=$host_cc}
4394 set_default ar as objcc dep_cc ld ln_s host_ld windres
4395
4396 probe_cc as "$as"
4397 asflags_filter=$_flags_filter
4398 add_asflags $_flags $_cflags
4399 set_ccvars AS
4400
4401 probe_cc objcc "$objcc"
4402 objcflags_filter=$_flags_filter
4403 add_objcflags $_flags $_cflags
4404 set_ccvars OBJC
4405
4406 probe_cc ld "$ld"
4407 ldflags_filter=$_flags_filter
4408 add_ldflags $_flags $_ldflags
4409 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4410 LD_O=${_ld_o-$LD_O}
4411 LD_LIB=${_ld_lib-$LD_LIB}
4412 LD_PATH=${_ld_path-$LD_PATH}
4413
4414 probe_cc hostld "$host_ld"
4415 host_ldflags_filter=$_flags_filter
4416 add_host_ldflags $_flags $_ldflags
4417 HOSTLD_O=${_ld_o-$HOSTLD_O}
4418
4419 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4420     probe_cc depcc "$dep_cc"
4421     CCDEP=${_DEPCMD:-$DEPCMD}
4422     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4423     DEPCCFLAGS=$_flags
4424 fi
4425
4426 if $ar 2>&1 | grep -q Microsoft; then
4427     arflags="-nologo"
4428     ar_o='-out:$@'
4429 elif $ar 2>&1 | grep -q "\[D\] "; then
4430     arflags="rcD"
4431     ar_o='$@'
4432 else
4433     arflags="rc"
4434     ar_o='$@'
4435 fi
4436
4437 add_cflags $extra_cflags
4438 add_cxxflags $extra_cxxflags
4439 add_objcflags $extra_objcflags
4440 add_asflags $extra_cflags
4441
4442 if test -n "$sysroot"; then
4443     case "$cc_type" in
4444         gcc|llvm_gcc|clang)
4445             add_cppflags --sysroot="$sysroot"
4446             add_ldflags --sysroot="$sysroot"
4447         ;;
4448     esac
4449 fi
4450
4451 if test "$cpu" = host; then
4452     enabled cross_compile &&
4453         die "--cpu=host makes no sense when cross-compiling."
4454
4455     case "$cc_type" in
4456         gcc|llvm_gcc)
4457             check_native(){
4458                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4459                 sed -n "/cc1.*$1=/{
4460                             s/.*$1=\\([^ ]*\\).*/\\1/
4461                             p
4462                             q
4463                         }" $TMPE
4464             }
4465             cpu=$(check_native -march || check_native -mcpu)
4466         ;;
4467         clang)
4468             check_native(){
4469                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4470                 sed -n "/cc1.*-target-cpu /{
4471                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4472                             p
4473                             q
4474                         }" $TMPE
4475             }
4476             cpu=$(check_native -march)
4477         ;;
4478     esac
4479
4480     test "${cpu:-host}" = host &&
4481         die "--cpu=host not supported with compiler $cc"
4482 fi
4483
4484 # Deal with common $arch aliases
4485 case "$arch" in
4486     aarch64|arm64)
4487         arch="aarch64"
4488     ;;
4489     arm*|iPad*|iPhone*)
4490         arch="arm"
4491     ;;
4492     mips*|IP*)
4493         case "$arch" in
4494         *el)
4495             add_cppflags -EL
4496             add_ldflags -EL
4497         ;;
4498         *eb)
4499             add_cppflags -EB
4500             add_ldflags -EB
4501         ;;
4502         esac
4503         arch="mips"
4504     ;;
4505     parisc*|hppa*)
4506         arch="parisc"
4507     ;;
4508     "Power Macintosh"|ppc*|powerpc*)
4509         arch="ppc"
4510     ;;
4511     s390|s390x)
4512         arch="s390"
4513     ;;
4514     sh4|sh)
4515         arch="sh4"
4516     ;;
4517     sun4*|sparc*)
4518         arch="sparc"
4519     ;;
4520     tilegx|tile-gx)
4521         arch="tilegx"
4522     ;;
4523     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4524         arch="x86"
4525     ;;
4526 esac
4527
4528 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4529 enable $arch
4530
4531 # Add processor-specific flags
4532 if enabled aarch64; then
4533
4534     case $cpu in
4535         armv*)
4536             cpuflags="-march=$cpu"
4537         ;;
4538         *)
4539             cpuflags="-mcpu=$cpu"
4540         ;;
4541     esac
4542
4543 elif enabled alpha; then
4544
4545     cpuflags="-mcpu=$cpu"
4546
4547 elif enabled arm; then
4548
4549     check_arm_arch() {
4550         check_cpp_condition stddef.h \
4551             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4552             $cpuflags
4553     }
4554
4555     probe_arm_arch() {
4556         if   check_arm_arch 4;        then echo armv4
4557         elif check_arm_arch 4T;       then echo armv4t
4558         elif check_arm_arch 5;        then echo armv5
4559         elif check_arm_arch 5E;       then echo armv5e
4560         elif check_arm_arch 5T;       then echo armv5t
4561         elif check_arm_arch 5TE;      then echo armv5te
4562         elif check_arm_arch 5TEJ;     then echo armv5te
4563         elif check_arm_arch 6;        then echo armv6
4564         elif check_arm_arch 6J;       then echo armv6j
4565         elif check_arm_arch 6K;       then echo armv6k
4566         elif check_arm_arch 6Z;       then echo armv6z
4567         elif check_arm_arch 6KZ;      then echo armv6zk
4568         elif check_arm_arch 6ZK;      then echo armv6zk
4569         elif check_arm_arch 6T2;      then echo armv6t2
4570         elif check_arm_arch 7;        then echo armv7
4571         elif check_arm_arch 7A  7_A;  then echo armv7-a
4572         elif check_arm_arch 7S;       then echo armv7-a
4573         elif check_arm_arch 7R  7_R;  then echo armv7-r
4574         elif check_arm_arch 7M  7_M;  then echo armv7-m
4575         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4576         elif check_arm_arch 8A  8_A;  then echo armv8-a
4577         fi
4578     }
4579
4580     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4581
4582     case $cpu in
4583         armv*)
4584             cpuflags="-march=$cpu"
4585             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4586         ;;
4587         *)
4588             cpuflags="-mcpu=$cpu"
4589             case $cpu in
4590                 cortex-a*)                               subarch=armv7a  ;;
4591                 cortex-r*)                               subarch=armv7r  ;;
4592                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4593                 arm11*)                                  subarch=armv6   ;;
4594                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4595                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4596                 *)                             subarch=$(probe_arm_arch) ;;
4597             esac
4598         ;;
4599     esac
4600
4601     case "$subarch" in
4602         armv5t*)    enable fast_clz                ;;
4603         armv[6-8]*)
4604             enable fast_clz
4605             disabled fast_unaligned || enable fast_unaligned
4606             ;;
4607     esac
4608
4609 elif enabled avr32; then
4610
4611     case $cpu in
4612         ap7[02]0[0-2])
4613             subarch="avr32_ap"
4614             cpuflags="-mpart=$cpu"
4615         ;;
4616         ap)
4617             subarch="avr32_ap"
4618             cpuflags="-march=$cpu"
4619         ;;
4620         uc3[ab]*)
4621             subarch="avr32_uc"
4622             cpuflags="-mcpu=$cpu"
4623         ;;
4624         uc)
4625             subarch="avr32_uc"
4626             cpuflags="-march=$cpu"
4627         ;;
4628     esac
4629
4630 elif enabled bfin; then
4631
4632     cpuflags="-mcpu=$cpu"
4633
4634 elif enabled mips; then
4635
4636     cpuflags="-march=$cpu"
4637
4638     if [ "$cpu" != "generic" ]; then
4639         disable mips32r2
4640         disable mips32r5
4641         disable mips64r2
4642         disable mips32r6
4643         disable mips64r6
4644         disable loongson2
4645         disable loongson3
4646
4647         case $cpu in
4648             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4649                 enable mips32r2
4650                 disable msa
4651             ;;
4652             p5600|i6400|p6600)
4653                 disable mipsdsp
4654                 disable mipsdspr2
4655             ;;
4656             loongson*)
4657                 enable loongson2
4658                 enable loongson3
4659                 enable local_aligned
4660                 enable simd_align_16
4661                 enable fast_64bit
4662                 enable fast_clz
4663                 enable fast_cmov
4664                 enable fast_unaligned
4665                 disable aligned_stack
4666                 disable mipsfpu
4667                 disable mipsdsp
4668                 disable mipsdspr2
4669                 case $cpu in
4670                     loongson3*)
4671                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4672                     ;;
4673                     loongson2e)
4674                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4675                     ;;
4676                     loongson2f)
4677                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4678                     ;;
4679                 esac
4680             ;;
4681             *)
4682                 # Unknown CPU. Disable everything.
4683                 warn "unknown CPU. Disabling all MIPS optimizations."
4684                 disable mipsfpu
4685                 disable mipsdsp
4686                 disable mipsdspr2
4687                 disable msa
4688                 disable mmi
4689             ;;
4690         esac
4691
4692         case $cpu in
4693             24kc)
4694                 disable mipsfpu
4695                 disable mipsdsp
4696                 disable mipsdspr2
4697             ;;
4698             24kf*)
4699                 disable mipsdsp
4700                 disable mipsdspr2
4701             ;;
4702             24kec|34kc|1004kc)
4703                 disable mipsfpu
4704                 disable mipsdspr2
4705             ;;
4706             24kef*|34kf*|1004kf*)
4707                 disable mipsdspr2
4708             ;;
4709             74kc)
4710                 disable mipsfpu
4711             ;;
4712             p5600)
4713                 enable mips32r5
4714                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4715             ;;
4716             i6400)
4717                 enable mips64r6
4718                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4719             ;;
4720             p6600)
4721                 enable mips64r6
4722                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4723             ;;
4724         esac
4725     else
4726         # We do not disable anything. Is up to the user to disable the unwanted features.
4727         warn 'generic cpu selected'
4728     fi
4729
4730 elif enabled ppc; then
4731
4732     disable ldbrx
4733
4734     case $(tolower $cpu) in
4735         601|ppc601|powerpc601)
4736             cpuflags="-mcpu=601"
4737             disable altivec
4738         ;;
4739         603*|ppc603*|powerpc603*)
4740             cpuflags="-mcpu=603"
4741             disable altivec
4742         ;;
4743         604*|ppc604*|powerpc604*)
4744             cpuflags="-mcpu=604"
4745             disable altivec
4746         ;;
4747         g3|75*|ppc75*|powerpc75*)
4748             cpuflags="-mcpu=750"
4749             disable altivec
4750         ;;
4751         g4|745*|ppc745*|powerpc745*)
4752             cpuflags="-mcpu=7450"
4753             disable vsx
4754         ;;
4755         74*|ppc74*|powerpc74*)
4756             cpuflags="-mcpu=7400"
4757             disable vsx
4758         ;;
4759         g5|970|ppc970|powerpc970)
4760             cpuflags="-mcpu=970"
4761             disable vsx
4762         ;;
4763         power[3-6]*)
4764             cpuflags="-mcpu=$cpu"
4765             disable vsx
4766         ;;
4767         power[7-8]*)
4768             cpuflags="-mcpu=$cpu"
4769         ;;
4770         cell)
4771             cpuflags="-mcpu=cell"
4772             enable ldbrx
4773             disable vsx
4774         ;;
4775         e500mc)
4776             cpuflags="-mcpu=e500mc"
4777             disable altivec
4778         ;;
4779         e500v2)
4780             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4781             disable altivec
4782             disable dcbzl
4783         ;;
4784         e500)
4785             cpuflags="-mcpu=8540 -mhard-float"
4786             disable altivec
4787             disable dcbzl
4788         ;;
4789     esac
4790
4791 elif enabled sparc; then
4792
4793     case $cpu in
4794         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4795             cpuflags="-mcpu=$cpu"
4796         ;;
4797         ultrasparc*|niagara[234])
4798             cpuflags="-mcpu=$cpu"
4799         ;;
4800     esac
4801
4802 elif enabled x86; then
4803
4804     case $cpu in
4805         i[345]86|pentium)
4806             cpuflags="-march=$cpu"
4807             disable i686
4808             disable mmx
4809         ;;
4810         # targets that do NOT support nopl and conditional mov (cmov)
4811         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4812             cpuflags="-march=$cpu"
4813             disable i686
4814         ;;
4815         # targets that do support nopl and conditional mov (cmov)
4816         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4817         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4818         |amdfam10|barcelona|b[dt]ver*|znver*)
4819             cpuflags="-march=$cpu"
4820             enable i686
4821             enable fast_cmov
4822         ;;
4823         # targets that do support conditional mov but on which it's slow
4824         pentium4|pentium4m|prescott|nocona)
4825             cpuflags="-march=$cpu"
4826             enable i686
4827             disable fast_cmov
4828         ;;
4829     esac
4830
4831 fi
4832
4833 if [ "$cpu" != generic ]; then
4834     add_cflags  $cpuflags
4835     add_asflags $cpuflags
4836     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4837 fi
4838
4839 # compiler sanity check
4840 check_exec <<EOF
4841 int main(void){ return 0; }
4842 EOF
4843 if test "$?" != 0; then
4844     echo "$cc is unable to create an executable file."
4845     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4846         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4847         echo "Only do this if you know what cross compiling means."
4848     fi
4849     die "C compiler test failed."
4850 fi
4851
4852 add_cppflags -D_ISOC99_SOURCE
4853 add_cxxflags -D__STDC_CONSTANT_MACROS
4854 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4855
4856 # some compilers silently accept -std=c11, so we also need to check that the
4857 # version macro is defined properly
4858 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4859     add_cflags -std=c11 ||
4860     check_cflags -std=c99
4861
4862 check_cppflags -D_FILE_OFFSET_BITS=64
4863 check_cppflags -D_LARGEFILE_SOURCE
4864
4865 add_host_cppflags -D_ISOC99_SOURCE
4866 check_host_cflags -std=c99
4867 check_host_cflags -Wall
4868 check_host_cflags $host_cflags_speed
4869
4870 check_64bit(){
4871     arch32=$1
4872     arch64=$2
4873     expr=${3:-'sizeof(void *) > 4'}
4874     check_code cc "" "int test[2*($expr) - 1]" &&
4875         subarch=$arch64 || subarch=$arch32
4876     enable $subarch
4877 }
4878
4879 case "$arch" in
4880     aarch64|alpha|ia64)
4881         enabled shared && enable_weak pic
4882     ;;
4883     mips)
4884         check_64bit mips mips64 '_MIPS_SIM > 1'
4885         enabled shared && enable_weak pic
4886     ;;
4887     parisc)
4888         check_64bit parisc parisc64
4889         enabled shared && enable_weak pic
4890     ;;
4891     ppc)
4892         check_64bit ppc ppc64
4893         enabled shared && enable_weak pic
4894     ;;
4895     s390)
4896         check_64bit s390 s390x
4897         enabled shared && enable_weak pic
4898     ;;
4899     sparc)
4900         check_64bit sparc sparc64
4901         enabled shared && enable_weak pic
4902     ;;
4903     x86)
4904         check_64bit x86_32 x86_64
4905         # Treat x32 as x64 for now. Note it also needs pic if shared
4906         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4907             subarch=x86_64 && enable x86_64 && disable x86_32
4908         if enabled x86_64; then
4909             enabled shared && enable_weak pic
4910             objformat=elf64
4911         fi
4912     ;;
4913 esac
4914
4915 # OS specific
4916 case $target_os in
4917     aix)
4918         SHFLAGS=-shared
4919         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4920         enabled shared && add_ldflags -Wl,-brtl
4921         arflags='-Xany -r -c'
4922         ;;
4923     android)
4924         disable symver
4925         enable section_data_rel_ro
4926         SLIB_INSTALL_NAME='$(SLIBNAME)'
4927         SLIB_INSTALL_LINKS=
4928         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4929         ;;
4930     haiku)
4931         prefix_default="/boot/common"
4932       &n