Merge commit '3e5950287317938e6b81e7ef8f024b403c303289'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [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   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_sanitized $header
1113     check_cpp "$@" <<EOF && enable_sanitized $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_sanitized $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 test_pkg_config(){
1273     log test_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_sanitized "${name}_cflags"    $pkg_cflags &&
1287         set_sanitized "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_pkg_config(){
1291     log check_pkg_config "$@"
1292     name="$1"
1293     test_pkg_config "$@" &&
1294         eval add_cflags \$${name}_cflags
1295 }
1296
1297 check_exec(){
1298     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1299 }
1300
1301 check_exec_crash(){
1302     log check_exec_crash "$@"
1303     code=$(cat)
1304
1305     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1306     # are safe but may not be available everywhere.  Thus we use
1307     # raise(SIGTERM) instead.  The check is run in a subshell so we
1308     # can redirect the "Terminated" message from the shell.  SIGBUS
1309     # is not defined by standard C so it is used conditionally.
1310
1311     (check_exec "$@") >> $logfile 2>&1 <<EOF
1312 #include <signal.h>
1313 static void sighandler(int sig){
1314     raise(SIGTERM);
1315 }
1316 int foo(void){
1317     $code
1318 }
1319 int (*func_ptr)(void) = foo;
1320 int main(void){
1321     signal(SIGILL, sighandler);
1322     signal(SIGFPE, sighandler);
1323     signal(SIGSEGV, sighandler);
1324 #ifdef SIGBUS
1325     signal(SIGBUS, sighandler);
1326 #endif
1327     return func_ptr();
1328 }
1329 EOF
1330 }
1331
1332 check_type(){
1333     log check_type "$@"
1334     headers=$1
1335     type=$2
1336     shift 2
1337     disable_sanitized "$type"
1338     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1339 }
1340
1341 check_struct(){
1342     log check_struct "$@"
1343     headers=$1
1344     struct=$2
1345     member=$3
1346     shift 3
1347     disable_sanitized "${struct}_${member}"
1348     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1349         enable_sanitized "${struct}_${member}"
1350 }
1351
1352 check_builtin(){
1353     log check_builtin "$@"
1354     name=$1
1355     headers=$2
1356     builtin=$3
1357     shift 3
1358     disable "$name"
1359     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1360 }
1361
1362 check_compile_assert(){
1363     log check_compile_assert "$@"
1364     name=$1
1365     headers=$2
1366     condition=$3
1367     shift 3
1368     disable "$name"
1369     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1370 }
1371
1372 require(){
1373     log require "$@"
1374     name_version="$1"
1375     name="${1%% *}"
1376     headers="$2"
1377     func="$3"
1378     shift 3
1379     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1380 }
1381
1382 require_cpp(){
1383     name="$1"
1384     headers="$2"
1385     classes="$3"
1386     shift 3
1387     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1388 }
1389
1390 require_header(){
1391     log require "$@"
1392     header="$1"
1393     shift
1394     check_header "$header" "$@" || die "ERROR: $header header not found"
1395 }
1396
1397 require_cpp_condition(){
1398     log require "$@"
1399     header="$1"
1400     condition="$2"
1401     shift 2
1402     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     libxcb
1538     libxcb_shm
1539     libxcb_shape
1540     libxcb_xfixes
1541     lzma
1542     schannel
1543     sdl2
1544     securetransport
1545     sndio
1546     xlib
1547     zlib
1548 "
1549
1550 EXTERNAL_LIBRARY_GPL_LIST="
1551     avisynth
1552     frei0r
1553     libcdio
1554     librubberband
1555     libvidstab
1556     libx264
1557     libx265
1558     libxavs
1559     libxvid
1560 "
1561
1562 EXTERNAL_LIBRARY_NONFREE_LIST="
1563     decklink
1564     libndi_newtek
1565     libfdk_aac
1566     openssl
1567 "
1568
1569 EXTERNAL_LIBRARY_VERSION3_LIST="
1570     gmp
1571     libopencore_amrnb
1572     libopencore_amrwb
1573     libvmaf
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libjack
1608     libkvazaar
1609     libmodplug
1610     libmp3lame
1611     libmysofa
1612     libopencv
1613     libopenh264
1614     libopenjpeg
1615     libopenmpt
1616     libopus
1617     libpulse
1618     librsvg
1619     librtmp
1620     libshine
1621     libsmbclient
1622     libsnappy
1623     libsoxr
1624     libspeex
1625     libssh
1626     libtesseract
1627     libtheora
1628     libtwolame
1629     libv4l2
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     arpa_inet_h
1914     asm_types_h
1915     cdio_paranoia_h
1916     cdio_paranoia_paranoia_h
1917     cuda_h
1918     dispatch_dispatch_h
1919     dev_bktr_ioctl_bt848_h
1920     dev_bktr_ioctl_meteor_h
1921     dev_ic_bt8xx_h
1922     dev_video_bktr_ioctl_bt848_h
1923     dev_video_meteor_ioctl_meteor_h
1924     direct_h
1925     dirent_h
1926     dxgidebug_h
1927     dxva_h
1928     ES2_gl_h
1929     io_h
1930     mach_mach_time_h
1931     machine_ioctl_bt848_h
1932     machine_ioctl_meteor_h
1933     malloc_h
1934     opencv2_core_core_c_h
1935     OpenGL_gl3_h
1936     poll_h
1937     stdatomic_h
1938     sys_param_h
1939     sys_resource_h
1940     sys_select_h
1941     sys_soundcard_h
1942     sys_time_h
1943     sys_un_h
1944     sys_videoio_h
1945     termios_h
1946     udplite_h
1947     unistd_h
1948     valgrind_valgrind_h
1949     windows_h
1950     winsock2_h
1951 "
1952
1953 INTRINSICS_LIST="
1954     intrinsics_neon
1955 "
1956
1957 COMPLEX_FUNCS="
1958     cabs
1959     cexp
1960 "
1961
1962 MATH_FUNCS="
1963     atanf
1964     atan2f
1965     cbrt
1966     cbrtf
1967     copysign
1968     cosf
1969     erf
1970     exp2
1971     exp2f
1972     expf
1973     hypot
1974     isfinite
1975     isinf
1976     isnan
1977     ldexpf
1978     llrint
1979     llrintf
1980     log2
1981     log2f
1982     log10f
1983     lrint
1984     lrintf
1985     powf
1986     rint
1987     round
1988     roundf
1989     sinf
1990     trunc
1991     truncf
1992 "
1993
1994 SYSTEM_FUNCS="
1995     access
1996     aligned_malloc
1997     arc4random
1998     clock_gettime
1999     closesocket
2000     CommandLineToArgvW
2001     CryptGenRandom
2002     fcntl
2003     getaddrinfo
2004     gethrtime
2005     getopt
2006     GetProcessAffinityMask
2007     GetProcessMemoryInfo
2008     GetProcessTimes
2009     getrusage
2010     GetSystemTimeAsFileTime
2011     gettimeofday
2012     glob
2013     glXGetProcAddress
2014     gmtime_r
2015     inet_aton
2016     isatty
2017     kbhit
2018     localtime_r
2019     lstat
2020     lzo1x_999_compress
2021     mach_absolute_time
2022     MapViewOfFile
2023     memalign
2024     mkstemp
2025     mmap
2026     mprotect
2027     nanosleep
2028     PeekNamedPipe
2029     posix_memalign
2030     pthread_cancel
2031     sched_getaffinity
2032     SetConsoleTextAttribute
2033     SetConsoleCtrlHandler
2034     setmode
2035     setrlimit
2036     Sleep
2037     strerror_r
2038     sysconf
2039     sysctl
2040     usleep
2041     UTGetOSTypeFromString
2042     VirtualAlloc
2043     wglGetProcAddress
2044 "
2045
2046 TOOLCHAIN_FEATURES="
2047     as_arch_directive
2048     as_fpu_directive
2049     as_func
2050     as_object_arch
2051     asm_mod_q
2052     blocks_extension
2053     ebp_available
2054     ebx_available
2055     gnu_as
2056     gnu_windres
2057     ibm_asm
2058     inline_asm_direct_symbol_refs
2059     inline_asm_labels
2060     inline_asm_nonlocal_labels
2061     pragma_deprecated
2062     rsync_contimeout
2063     symver_asm_label
2064     symver_gnu_asm
2065     vfp_args
2066     xform_asm
2067     xmm_clobbers
2068 "
2069
2070 TYPES_LIST="
2071     CONDITION_VARIABLE_Ptr
2072     kCMVideoCodecType_HEVC
2073     socklen_t
2074     struct_addrinfo
2075     struct_group_source_req
2076     struct_ip_mreq_source
2077     struct_ipv6_mreq
2078     struct_msghdr_msg_flags
2079     struct_pollfd
2080     struct_rusage_ru_maxrss
2081     struct_sctp_event_subscribe
2082     struct_sockaddr_in6
2083     struct_sockaddr_sa_len
2084     struct_sockaddr_storage
2085     struct_stat_st_mtim_tv_nsec
2086     struct_v4l2_frmivalenum_discrete
2087 "
2088
2089 HAVE_LIST="
2090     $ARCH_EXT_LIST
2091     $(add_suffix _external $ARCH_EXT_LIST)
2092     $(add_suffix _inline   $ARCH_EXT_LIST)
2093     $ARCH_FEATURES
2094     $ATOMICS_LIST
2095     $BUILTIN_LIST
2096     $COMPLEX_FUNCS
2097     $HAVE_LIST_CMDLINE
2098     $HAVE_LIST_PUB
2099     $HEADERS_LIST
2100     $INTRINSICS_LIST
2101     $MATH_FUNCS
2102     $SYSTEM_FUNCS
2103     $THREADS_LIST
2104     $TOOLCHAIN_FEATURES
2105     $TYPES_LIST
2106     atomics_native
2107     dos_paths
2108     libc_msvcrt
2109     makeinfo
2110     makeinfo_html
2111     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2112     perl
2113     pod2man
2114     section_data_rel_ro
2115     texi2html
2116     threads
2117     uwp
2118     vaapi_drm
2119     vaapi_x11
2120     vdpau_x11
2121     winrt
2122 "
2123
2124 # options emitted with CONFIG_ prefix but not available on the command line
2125 CONFIG_EXTRA="
2126     aandcttables
2127     ac3dsp
2128     adts_header
2129     audio_frame_queue
2130     audiodsp
2131     blockdsp
2132     bswapdsp
2133     cabac
2134     cbs
2135     cbs_h264
2136     cbs_h265
2137     cbs_mpeg2
2138     dirac_parse
2139     dvprofile
2140     exif
2141     faandct
2142     faanidct
2143     fdctdsp
2144     flacdsp
2145     fmtconvert
2146     frame_thread_encoder
2147     g722dsp
2148     golomb
2149     gplv3
2150     h263dsp
2151     h264chroma
2152     h264dsp
2153     h264parse
2154     h264pred
2155     h264qpel
2156     hevcparse
2157     hpeldsp
2158     huffman
2159     huffyuvdsp
2160     huffyuvencdsp
2161     idctdsp
2162     iirfilter
2163     mdct15
2164     intrax8
2165     iso_media
2166     ividsp
2167     jpegtables
2168     lgplv3
2169     libx262
2170     llauddsp
2171     llviddsp
2172     llvidencdsp
2173     lpc
2174     lzf
2175     me_cmp
2176     mpeg_er
2177     mpegaudio
2178     mpegaudiodsp
2179     mpegaudioheader
2180     mpegvideo
2181     mpegvideoenc
2182     mss34dsp
2183     pixblockdsp
2184     qpeldsp
2185     qsv
2186     qsvdec
2187     qsvenc
2188     qsvvpp
2189     rangecoder
2190     riffdec
2191     riffenc
2192     rtpdec
2193     rtpenc_chain
2194     rv34dsp
2195     sinewin
2196     snappy
2197     srtp
2198     startcode
2199     texturedsp
2200     texturedspenc
2201     tpeldsp
2202     vaapi_1
2203     vaapi_encode
2204     vc1dsp
2205     videodsp
2206     vp3dsp
2207     vp56dsp
2208     vp8dsp
2209     wma_freqs
2210     wmv2dsp
2211 "
2212
2213 CMDLINE_SELECT="
2214     $ARCH_EXT_LIST
2215     $CONFIG_LIST
2216     $HAVE_LIST_CMDLINE
2217     $THREADS_LIST
2218     asm
2219     cross_compile
2220     debug
2221     extra_warnings
2222     logging
2223     lto
2224     optimizations
2225     rpath
2226     stripping
2227 "
2228
2229 PATHS_LIST="
2230     bindir
2231     datadir
2232     docdir
2233     incdir
2234     libdir
2235     mandir
2236     pkgconfigdir
2237     prefix
2238     shlibdir
2239     install_name_dir
2240 "
2241
2242 CMDLINE_SET="
2243     $PATHS_LIST
2244     ar
2245     arch
2246     as
2247     assert_level
2248     build_suffix
2249     cc
2250     objcc
2251     cpu
2252     cross_prefix
2253     custom_allocator
2254     cxx
2255     dep_cc
2256     doxygen
2257     env
2258     extra_version
2259     gas
2260     host_cc
2261     host_cflags
2262     host_extralibs
2263     host_ld
2264     host_ldflags
2265     host_os
2266     ignore_tests
2267     install
2268     ld
2269     ln_s
2270     logfile
2271     malloc_prefix
2272     nm
2273     optflags
2274     nvccflags
2275     pkg_config
2276     pkg_config_flags
2277     progs_suffix
2278     random_seed
2279     ranlib
2280     samples
2281     strip
2282     sws_max_filter_size
2283     sysinclude
2284     sysroot
2285     target_exec
2286     target_os
2287     target_path
2288     target_samples
2289     tempprefix
2290     toolchain
2291     valgrind
2292     x86asmexe
2293 "
2294
2295 CMDLINE_APPEND="
2296     extra_cflags
2297     extra_cxxflags
2298     extra_objcflags
2299     host_cppflags
2300 "
2301
2302 # code dependency declarations
2303
2304 # architecture extensions
2305
2306 armv5te_deps="arm"
2307 armv6_deps="arm"
2308 armv6t2_deps="arm"
2309 armv8_deps="aarch64"
2310 neon_deps_any="aarch64 arm"
2311 intrinsics_neon_deps="neon"
2312 vfp_deps_any="aarch64 arm"
2313 vfpv3_deps="vfp"
2314 setend_deps="arm"
2315
2316 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2317
2318 altivec_deps="ppc"
2319 dcbzl_deps="ppc"
2320 ldbrx_deps="ppc"
2321 ppc4xx_deps="ppc"
2322 vsx_deps="altivec"
2323 power8_deps="vsx"
2324
2325 loongson2_deps="mips"
2326 loongson3_deps="mips"
2327 mips32r2_deps="mips"
2328 mips32r5_deps="mips"
2329 mips32r6_deps="mips"
2330 mips64r2_deps="mips"
2331 mips64r6_deps="mips"
2332 mipsfpu_deps="mips"
2333 mipsdsp_deps="mips"
2334 mipsdspr2_deps="mips"
2335 mmi_deps="mips"
2336 msa_deps="mipsfpu"
2337
2338 cpunop_deps="i686"
2339 x86_64_select="i686"
2340 x86_64_suggest="fast_cmov"
2341
2342 amd3dnow_deps="mmx"
2343 amd3dnowext_deps="amd3dnow"
2344 i686_deps="x86"
2345 mmx_deps="x86"
2346 mmxext_deps="mmx"
2347 sse_deps="mmxext"
2348 sse2_deps="sse"
2349 sse3_deps="sse2"
2350 ssse3_deps="sse3"
2351 sse4_deps="ssse3"
2352 sse42_deps="sse4"
2353 aesni_deps="sse42"
2354 avx_deps="sse42"
2355 xop_deps="avx"
2356 fma3_deps="avx"
2357 fma4_deps="avx"
2358 avx2_deps="avx"
2359
2360 mmx_external_deps="x86asm"
2361 mmx_inline_deps="inline_asm x86"
2362 mmx_suggest="mmx_external mmx_inline"
2363
2364 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2365     eval dep=\$${ext}_deps
2366     eval ${ext}_external_deps='"${dep}_external"'
2367     eval ${ext}_inline_deps='"${dep}_inline"'
2368     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2369 done
2370
2371 aligned_stack_if_any="aarch64 ppc x86"
2372 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2373 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2374 fast_unaligned_if_any="aarch64 ppc x86"
2375 simd_align_16_if_any="altivec neon sse"
2376 simd_align_32_if_any="avx"
2377
2378 # system capabilities
2379 symver_if_any="symver_asm_label symver_gnu_asm"
2380 valgrind_backtrace_conflict="optimizations"
2381 valgrind_backtrace_deps="valgrind_valgrind_h"
2382
2383 # threading support
2384 atomics_gcc_if="sync_val_compare_and_swap"
2385 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2386 atomics_win32_if="MemoryBarrier"
2387 atomics_native_if_any="$ATOMICS_LIST"
2388 w32threads_deps="atomics_native"
2389 threads_if_any="$THREADS_LIST"
2390
2391 # subsystems
2392 cbs_h264_select="cbs golomb"
2393 cbs_h265_select="cbs golomb"
2394 cbs_mpeg2_select="cbs"
2395 dct_select="rdft"
2396 dirac_parse_select="golomb"
2397 error_resilience_select="me_cmp"
2398 faandct_deps="faan"
2399 faandct_select="fdctdsp"
2400 faanidct_deps="faan"
2401 faanidct_select="idctdsp"
2402 h264dsp_select="startcode"
2403 hevcparse_select="golomb"
2404 frame_thread_encoder_deps="encoders threads"
2405 intrax8_select="blockdsp idctdsp"
2406 mdct_select="fft"
2407 mdct15_select="fft"
2408 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2409 mpeg_er_select="error_resilience"
2410 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2411 mpegaudiodsp_select="dct"
2412 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2413 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2414 vc1dsp_select="h264chroma qpeldsp startcode"
2415 rdft_select="fft"
2416
2417 # decoders / encoders
2418 aac_decoder_select="adts_header mdct15 mdct sinewin"
2419 aac_fixed_decoder_select="mdct sinewin"
2420 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2421 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2422 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2423 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2424 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2425 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2426 adpcm_g722_decoder_select="g722dsp"
2427 adpcm_g722_encoder_select="g722dsp"
2428 aic_decoder_select="golomb idctdsp"
2429 alac_encoder_select="lpc"
2430 als_decoder_select="bswapdsp"
2431 amrnb_decoder_select="lsp"
2432 amrwb_decoder_select="lsp"
2433 amv_decoder_select="sp5x_decoder exif"
2434 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2435 ape_decoder_select="bswapdsp llauddsp"
2436 apng_decoder_select="zlib"
2437 apng_encoder_select="llvidencdsp zlib"
2438 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2439 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2440 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2441 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2442 atrac1_decoder_select="mdct sinewin"
2443 atrac3_decoder_select="mdct"
2444 atrac3p_decoder_select="mdct sinewin"
2445 avrn_decoder_select="exif jpegtables"
2446 bink_decoder_select="blockdsp hpeldsp"
2447 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2448 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2449 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2450 clearvideo_decoder_select="idctdsp"
2451 cllc_decoder_select="bswapdsp"
2452 comfortnoise_encoder_select="lpc"
2453 cook_decoder_select="audiodsp mdct sinewin"
2454 cscd_decoder_select="lzo"
2455 cscd_decoder_suggest="zlib"
2456 dca_decoder_select="mdct"
2457 dds_decoder_select="texturedsp"
2458 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2459 dnxhd_decoder_select="blockdsp idctdsp"
2460 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2461 dolby_e_decoder_select="mdct"
2462 dvvideo_decoder_select="dvprofile idctdsp"
2463 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2464 dxa_decoder_select="zlib"
2465 dxv_decoder_select="lzf texturedsp"
2466 eac3_decoder_select="ac3_decoder"
2467 eac3_encoder_select="ac3_encoder"
2468 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2469 eatgq_decoder_select="aandcttables"
2470 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2471 exr_decoder_select="zlib"
2472 ffv1_decoder_select="rangecoder"
2473 ffv1_encoder_select="rangecoder"
2474 ffvhuff_decoder_select="huffyuv_decoder"
2475 ffvhuff_encoder_select="huffyuv_encoder"
2476 fic_decoder_select="golomb"
2477 flac_decoder_select="flacdsp"
2478 flac_encoder_select="bswapdsp flacdsp lpc"
2479 flashsv2_decoder_select="zlib"
2480 flashsv2_encoder_select="zlib"
2481 flashsv_decoder_select="zlib"
2482 flashsv_encoder_select="zlib"
2483 flv_decoder_select="h263_decoder"
2484 flv_encoder_select="h263_encoder"
2485 fourxm_decoder_select="blockdsp bswapdsp"
2486 fraps_decoder_select="bswapdsp huffman"
2487 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2488 g729_decoder_select="audiodsp"
2489 h261_decoder_select="mpegvideo"
2490 h261_encoder_select="aandcttables mpegvideoenc"
2491 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2492 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2493 h263i_decoder_select="h263_decoder"
2494 h263p_decoder_select="h263_decoder"
2495 h263p_encoder_select="h263_encoder"
2496 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2497 h264_decoder_suggest="error_resilience"
2498 hap_decoder_select="snappy texturedsp"
2499 hap_encoder_deps="libsnappy"
2500 hap_encoder_select="texturedspenc"
2501 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2502 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2503 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2504 iac_decoder_select="imc_decoder"
2505 imc_decoder_select="bswapdsp fft mdct sinewin"
2506 indeo3_decoder_select="hpeldsp"
2507 indeo4_decoder_select="ividsp"
2508 indeo5_decoder_select="ividsp"
2509 interplay_video_decoder_select="hpeldsp"
2510 jpegls_decoder_select="mjpeg_decoder"
2511 jv_decoder_select="blockdsp"
2512 lagarith_decoder_select="llviddsp"
2513 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2514 magicyuv_decoder_select="llviddsp"
2515 magicyuv_encoder_select="llvidencdsp"
2516 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2517 metasound_decoder_select="lsp mdct sinewin"
2518 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2519 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2520 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2521 mjpegb_decoder_select="mjpeg_decoder"
2522 mlp_decoder_select="mlp_parser"
2523 mlp_encoder_select="lpc"
2524 motionpixels_decoder_select="bswapdsp"
2525 mp1_decoder_select="mpegaudio"
2526 mp1float_decoder_select="mpegaudio"
2527 mp2_decoder_select="mpegaudio"
2528 mp2float_decoder_select="mpegaudio"
2529 mp3_decoder_select="mpegaudio"
2530 mp3adu_decoder_select="mpegaudio"
2531 mp3adufloat_decoder_select="mpegaudio"
2532 mp3float_decoder_select="mpegaudio"
2533 mp3on4_decoder_select="mpegaudio"
2534 mp3on4float_decoder_select="mpegaudio"
2535 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2536 mpc8_decoder_select="mpegaudiodsp"
2537 mpegvideo_decoder_select="mpegvideo"
2538 mpeg1video_decoder_select="mpegvideo"
2539 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2540 mpeg2video_decoder_select="mpegvideo"
2541 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2542 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2543 mpeg4_encoder_select="h263_encoder"
2544 msa1_decoder_select="mss34dsp"
2545 mscc_decoder_select="zlib"
2546 msmpeg4v1_decoder_select="h263_decoder"
2547 msmpeg4v2_decoder_select="h263_decoder"
2548 msmpeg4v2_encoder_select="h263_encoder"
2549 msmpeg4v3_decoder_select="h263_decoder"
2550 msmpeg4v3_encoder_select="h263_encoder"
2551 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2552 mts2_decoder_select="mss34dsp"
2553 mxpeg_decoder_select="mjpeg_decoder"
2554 nellymoser_decoder_select="mdct sinewin"
2555 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2556 nuv_decoder_select="idctdsp lzo"
2557 on2avc_decoder_select="mdct"
2558 opus_decoder_deps="swresample"
2559 opus_decoder_select="mdct15"
2560 opus_encoder_select="audio_frame_queue mdct15"
2561 png_decoder_select="zlib"
2562 png_encoder_select="llvidencdsp zlib"
2563 prores_decoder_select="blockdsp idctdsp"
2564 prores_encoder_select="fdctdsp"
2565 qcelp_decoder_select="lsp"
2566 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2567 ra_144_decoder_select="audiodsp"
2568 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2569 ralf_decoder_select="golomb"
2570 rawvideo_decoder_select="bswapdsp"
2571 rscc_decoder_select="zlib"
2572 rtjpeg_decoder_select="me_cmp"
2573 rv10_decoder_select="h263_decoder"
2574 rv10_encoder_select="h263_encoder"
2575 rv20_decoder_select="h263_decoder"
2576 rv20_encoder_select="h263_encoder"
2577 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2578 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2579 screenpresso_decoder_select="zlib"
2580 shorten_decoder_select="bswapdsp"
2581 sipr_decoder_select="lsp"
2582 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2583 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2584 sonic_decoder_select="golomb rangecoder"
2585 sonic_encoder_select="golomb rangecoder"
2586 sonic_ls_encoder_select="golomb rangecoder"
2587 sp5x_decoder_select="mjpeg_decoder"
2588 srgc_decoder_select="zlib"
2589 svq1_decoder_select="hpeldsp"
2590 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2591 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2592 svq3_decoder_suggest="zlib"
2593 tak_decoder_select="audiodsp"
2594 tdsc_decoder_select="zlib mjpeg_decoder"
2595 theora_decoder_select="vp3_decoder"
2596 thp_decoder_select="mjpeg_decoder"
2597 tiff_decoder_suggest="zlib lzma"
2598 tiff_encoder_suggest="zlib"
2599 truehd_decoder_select="mlp_parser"
2600 truehd_encoder_select="lpc"
2601 truemotion2_decoder_select="bswapdsp"
2602 truespeech_decoder_select="bswapdsp"
2603 tscc_decoder_select="zlib"
2604 twinvq_decoder_select="mdct lsp sinewin"
2605 txd_decoder_select="texturedsp"
2606 utvideo_decoder_select="bswapdsp llviddsp"
2607 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2608 vble_decoder_select="llviddsp"
2609 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2610 vc1image_decoder_select="vc1_decoder"
2611 vorbis_decoder_select="mdct"
2612 vorbis_encoder_select="mdct"
2613 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2614 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2615 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2616 vp6a_decoder_select="vp6_decoder"
2617 vp6f_decoder_select="vp6_decoder"
2618 vp7_decoder_select="h264pred videodsp vp8dsp"
2619 vp8_decoder_select="h264pred videodsp vp8dsp"
2620 vp9_decoder_select="videodsp vp9_parser"
2621 webp_decoder_select="vp8_decoder exif"
2622 wmalossless_decoder_select="llauddsp"
2623 wmapro_decoder_select="mdct sinewin wma_freqs"
2624 wmav1_decoder_select="mdct sinewin wma_freqs"
2625 wmav1_encoder_select="mdct sinewin wma_freqs"
2626 wmav2_decoder_select="mdct sinewin wma_freqs"
2627 wmav2_encoder_select="mdct sinewin wma_freqs"
2628 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2629 wmv1_decoder_select="h263_decoder"
2630 wmv1_encoder_select="h263_encoder"
2631 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2632 wmv2_encoder_select="h263_encoder wmv2dsp"
2633 wmv3_decoder_select="vc1_decoder"
2634 wmv3image_decoder_select="wmv3_decoder"
2635 xma1_decoder_select="wmapro_decoder"
2636 xma2_decoder_select="wmapro_decoder"
2637 zerocodec_decoder_select="zlib"
2638 zlib_decoder_select="zlib"
2639 zlib_encoder_select="zlib"
2640 zmbv_decoder_select="zlib"
2641 zmbv_encoder_select="zlib"
2642
2643 # hardware accelerators
2644 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2645 cuda_deps_any="libdl LoadLibrary"
2646 cuvid_deps="cuda"
2647 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2648 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2649 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2650 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2651 xvmc_deps="X11_extensions_XvMClib_h"
2652
2653 h263_vaapi_hwaccel_deps="vaapi"
2654 h263_vaapi_hwaccel_select="h263_decoder"
2655 h263_videotoolbox_hwaccel_deps="videotoolbox"
2656 h263_videotoolbox_hwaccel_select="h263_decoder"
2657 h264_cuvid_hwaccel_deps="cuda cuvid"
2658 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2659 h264_d3d11va_hwaccel_deps="d3d11va"
2660 h264_d3d11va_hwaccel_select="h264_decoder"
2661 h264_d3d11va2_hwaccel_deps="d3d11va"
2662 h264_d3d11va2_hwaccel_select="h264_decoder"
2663 h264_dxva2_hwaccel_deps="dxva2"
2664 h264_dxva2_hwaccel_select="h264_decoder"
2665 h264_mediacodec_hwaccel_deps="mediacodec"
2666 h264_mmal_hwaccel_deps="mmal"
2667 h264_nvdec_hwaccel_deps="cuda nvdec"
2668 h264_nvdec_hwaccel_select="h264_decoder"
2669 h264_qsv_hwaccel_deps="libmfx"
2670 h264_vaapi_hwaccel_deps="vaapi"
2671 h264_vaapi_hwaccel_select="h264_decoder"
2672 h264_vdpau_hwaccel_deps="vdpau"
2673 h264_vdpau_hwaccel_select="h264_decoder"
2674 h264_videotoolbox_hwaccel_deps="videotoolbox"
2675 h264_videotoolbox_hwaccel_select="h264_decoder"
2676 hevc_cuvid_hwaccel_deps="cuda cuvid"
2677 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2678 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2679 hevc_d3d11va_hwaccel_select="hevc_decoder"
2680 hevc_mediacodec_hwaccel_deps="mediacodec"
2681 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2683 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2684 hevc_dxva2_hwaccel_select="hevc_decoder"
2685 hevc_nvdec_hwaccel_deps="cuda nvdec"
2686 hevc_nvdec_hwaccel_select="hevc_decoder"
2687 hevc_qsv_hwaccel_deps="libmfx"
2688 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2689 hevc_vaapi_hwaccel_select="hevc_decoder"
2690 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2691 hevc_vdpau_hwaccel_select="hevc_decoder"
2692 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2693 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2694 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2695 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2696 mpeg_xvmc_hwaccel_deps="xvmc"
2697 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2698 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2699 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2700 mpeg1_vdpau_hwaccel_deps="vdpau"
2701 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2702 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2703 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2704 mpeg1_xvmc_hwaccel_deps="xvmc"
2705 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2706 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2707 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2708 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2709 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2711 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_dxva2_hwaccel_deps="dxva2"
2713 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2715 mpeg2_mmal_hwaccel_deps="mmal"
2716 mpeg2_qsv_hwaccel_deps="libmfx"
2717 mpeg2_vaapi_hwaccel_deps="vaapi"
2718 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_vdpau_hwaccel_deps="vdpau"
2720 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2722 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_xvmc_hwaccel_deps="xvmc"
2724 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2725 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2726 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2727 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2728 mpeg4_mmal_hwaccel_deps="mmal"
2729 mpeg4_vaapi_hwaccel_deps="vaapi"
2730 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2731 mpeg4_vdpau_hwaccel_deps="vdpau"
2732 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2733 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2734 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2735 vc1_cuvid_hwaccel_deps="cuda cuvid"
2736 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2737 vc1_d3d11va_hwaccel_deps="d3d11va"
2738 vc1_d3d11va_hwaccel_select="vc1_decoder"
2739 vc1_d3d11va2_hwaccel_deps="d3d11va"
2740 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2741 vc1_dxva2_hwaccel_deps="dxva2"
2742 vc1_dxva2_hwaccel_select="vc1_decoder"
2743 vc1_mmal_hwaccel_deps="mmal"
2744 vc1_qsv_hwaccel_deps="libmfx"
2745 vc1_vaapi_hwaccel_deps="vaapi"
2746 vc1_vaapi_hwaccel_select="vc1_decoder"
2747 vc1_vdpau_hwaccel_deps="vdpau"
2748 vc1_vdpau_hwaccel_select="vc1_decoder"
2749 vp8_cuvid_hwaccel_deps="cuda cuvid"
2750 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2751 vp9_cuvid_hwaccel_deps="cuda cuvid"
2752 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2753 vp8_mediacodec_hwaccel_deps="mediacodec"
2754 vp8_qsv_hwaccel_deps="libmfx"
2755 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va_hwaccel_select="vp9_decoder"
2757 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2758 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2759 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2760 vp9_dxva2_hwaccel_select="vp9_decoder"
2761 vp9_mediacodec_hwaccel_deps="mediacodec"
2762 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2763 vp9_vaapi_hwaccel_select="vp9_decoder"
2764 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2765 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2766 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2767 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2768 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2769
2770 # hardware-accelerated codecs
2771 omx_deps="libdl pthreads"
2772 omx_rpi_select="omx"
2773 qsv_deps="libmfx"
2774 qsvdec_select="qsv"
2775 qsvenc_select="qsv"
2776 qsvvpp_select="qsv"
2777 vaapi_encode_deps="vaapi"
2778 v4l2_m2m_deps_any="linux_videodev2_h"
2779
2780 hwupload_cuda_filter_deps="cuda"
2781 scale_npp_filter_deps="cuda libnpp"
2782 scale_cuda_filter_deps="cuda_sdk"
2783 thumbnail_cuda_filter_deps="cuda_sdk"
2784
2785 nvenc_deps="cuda"
2786 nvenc_deps_any="libdl LoadLibrary"
2787 nvenc_encoder_deps="nvenc"
2788
2789 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2790 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2791 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2792 h264_cuvid_decoder_deps="cuda cuvid"
2793 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2794 h264_mediacodec_decoder_deps="mediacodec"
2795 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2796 h264_mmal_decoder_deps="mmal"
2797 h264_nvenc_encoder_deps="nvenc"
2798 h264_omx_encoder_deps="omx"
2799 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2800 h264_qsv_encoder_select="qsvenc"
2801 h264_rkmpp_decoder_deps="rkmpp"
2802 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2803 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2804 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2805 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2806 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 hevc_cuvid_decoder_deps="cuda cuvid"
2808 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2809 hevc_mediacodec_decoder_deps="mediacodec"
2810 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2811 hevc_nvenc_encoder_deps="nvenc"
2812 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2813 hevc_qsv_encoder_select="hevcparse qsvenc"
2814 hevc_rkmpp_decoder_deps="rkmpp"
2815 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2817 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2818 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2819 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 mjpeg_cuvid_decoder_deps="cuda cuvid"
2821 mjpeg_qsv_encoder_deps="libmfx"
2822 mjpeg_qsv_encoder_select="qsvenc"
2823 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2824 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2825 mpeg1_cuvid_decoder_deps="cuda cuvid"
2826 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2827 mpeg2_crystalhd_decoder_select="crystalhd"
2828 mpeg2_cuvid_decoder_deps="cuda cuvid"
2829 mpeg2_mmal_decoder_deps="mmal"
2830 mpeg2_mediacodec_decoder_deps="mediacodec"
2831 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2832 mpeg2_qsv_encoder_select="qsvenc"
2833 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2834 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2835 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2836 mpeg4_crystalhd_decoder_select="crystalhd"
2837 mpeg4_cuvid_decoder_deps="cuda cuvid"
2838 mpeg4_mediacodec_decoder_deps="mediacodec"
2839 mpeg4_mmal_decoder_deps="mmal"
2840 mpeg4_omx_encoder_deps="omx"
2841 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2842 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 msmpeg4_crystalhd_decoder_select="crystalhd"
2844 nvenc_h264_encoder_select="h264_nvenc_encoder"
2845 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2846 vc1_crystalhd_decoder_select="crystalhd"
2847 vc1_cuvid_decoder_deps="cuda cuvid"
2848 vc1_mmal_decoder_deps="mmal"
2849 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2850 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2851 vp8_cuvid_decoder_deps="cuda cuvid"
2852 vp8_mediacodec_decoder_deps="mediacodec"
2853 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2854 vp8_rkmpp_decoder_deps="rkmpp"
2855 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2856 vp8_vaapi_encoder_select="vaapi_encode"
2857 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2858 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp9_cuvid_decoder_deps="cuda cuvid"
2860 vp9_mediacodec_decoder_deps="mediacodec"
2861 vp9_rkmpp_decoder_deps="rkmpp"
2862 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2863 vp9_vaapi_encoder_select="vaapi_encode"
2864 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2865 wmv3_crystalhd_decoder_select="crystalhd"
2866
2867 # parsers
2868 aac_parser_select="adts_header"
2869 h264_parser_select="golomb h264dsp h264parse"
2870 hevc_parser_select="hevcparse"
2871 mpegaudio_parser_select="mpegaudioheader"
2872 mpegvideo_parser_select="mpegvideo"
2873 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2874 vc1_parser_select="vc1dsp"
2875
2876 # bitstream_filters
2877 aac_adtstoasc_bsf_select="adts_header"
2878 h264_metadata_bsf_select="cbs_h264"
2879 h264_redundant_pps_bsf_select="cbs_h264"
2880 hevc_metadata_bsf_select="cbs_h265"
2881 mjpeg2jpeg_bsf_select="jpegtables"
2882 mpeg2_metadata_bsf_select="cbs_mpeg2"
2883 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2884
2885 # external libraries
2886 aac_at_decoder_deps="audiotoolbox"
2887 ac3_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_select="ac3_parser"
2889 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2890 alac_at_decoder_deps="audiotoolbox"
2891 amr_nb_at_decoder_deps="audiotoolbox"
2892 avisynth_deps_any="libdl LoadLibrary"
2893 avisynth_demuxer_deps="avisynth"
2894 avisynth_demuxer_select="riffdec"
2895 eac3_at_decoder_deps="audiotoolbox"
2896 eac3_at_decoder_select="ac3_parser"
2897 gsm_ms_at_decoder_deps="audiotoolbox"
2898 ilbc_at_decoder_deps="audiotoolbox"
2899 mp1_at_decoder_deps="audiotoolbox"
2900 mp2_at_decoder_deps="audiotoolbox"
2901 mp3_at_decoder_deps="audiotoolbox"
2902 mp1_at_decoder_select="mpegaudioheader"
2903 mp2_at_decoder_select="mpegaudioheader"
2904 mp3_at_decoder_select="mpegaudioheader"
2905 pcm_alaw_at_decoder_deps="audiotoolbox"
2906 pcm_mulaw_at_decoder_deps="audiotoolbox"
2907 qdmc_at_decoder_deps="audiotoolbox"
2908 qdm2_at_decoder_deps="audiotoolbox"
2909 aac_at_encoder_deps="audiotoolbox"
2910 aac_at_encoder_select="audio_frame_queue"
2911 alac_at_encoder_deps="audiotoolbox"
2912 alac_at_encoder_select="audio_frame_queue"
2913 ilbc_at_encoder_deps="audiotoolbox"
2914 ilbc_at_encoder_select="audio_frame_queue"
2915 pcm_alaw_at_encoder_deps="audiotoolbox"
2916 pcm_alaw_at_encoder_select="audio_frame_queue"
2917 pcm_mulaw_at_encoder_deps="audiotoolbox"
2918 pcm_mulaw_at_encoder_select="audio_frame_queue"
2919 chromaprint_muxer_deps="chromaprint"
2920 h264_videotoolbox_encoder_deps="pthreads"
2921 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2922 libcelt_decoder_deps="libcelt"
2923 libfdk_aac_decoder_deps="libfdk_aac"
2924 libfdk_aac_encoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_select="audio_frame_queue"
2926 libgme_demuxer_deps="libgme"
2927 libgsm_decoder_deps="libgsm"
2928 libgsm_encoder_deps="libgsm"
2929 libgsm_ms_decoder_deps="libgsm"
2930 libgsm_ms_encoder_deps="libgsm"
2931 libilbc_decoder_deps="libilbc"
2932 libilbc_encoder_deps="libilbc"
2933 libkvazaar_encoder_deps="libkvazaar"
2934 libmodplug_demuxer_deps="libmodplug"
2935 libmp3lame_encoder_deps="libmp3lame"
2936 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2937 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2938 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_select="audio_frame_queue"
2940 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2941 libopenh264_decoder_deps="libopenh264"
2942 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2943 libopenh264_encoder_deps="libopenh264"
2944 libopenjpeg_decoder_deps="libopenjpeg"
2945 libopenjpeg_encoder_deps="libopenjpeg"
2946 libopenmpt_demuxer_deps="libopenmpt"
2947 libopus_decoder_deps="libopus"
2948 libopus_encoder_deps="libopus"
2949 libopus_encoder_select="audio_frame_queue"
2950 librsvg_decoder_deps="librsvg"
2951 libshine_encoder_deps="libshine"
2952 libshine_encoder_select="audio_frame_queue"
2953 libspeex_decoder_deps="libspeex"
2954 libspeex_encoder_deps="libspeex"
2955 libspeex_encoder_select="audio_frame_queue"
2956 libtheora_encoder_deps="libtheora"
2957 libtwolame_encoder_deps="libtwolame"
2958 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2959 libvorbis_decoder_deps="libvorbis"
2960 libvorbis_encoder_deps="libvorbis libvorbisenc"
2961 libvorbis_encoder_select="audio_frame_queue"
2962 libvpx_vp8_decoder_deps="libvpx"
2963 libvpx_vp8_encoder_deps="libvpx"
2964 libvpx_vp9_decoder_deps="libvpx"
2965 libvpx_vp9_encoder_deps="libvpx"
2966 libwavpack_encoder_deps="libwavpack"
2967 libwavpack_encoder_select="audio_frame_queue"
2968 libwebp_encoder_deps="libwebp"
2969 libwebp_anim_encoder_deps="libwebp"
2970 libx262_encoder_deps="libx262"
2971 libx264_encoder_deps="libx264"
2972 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2973 libx264rgb_encoder_select="libx264_encoder"
2974 libx265_encoder_deps="libx265"
2975 libxavs_encoder_deps="libxavs"
2976 libxvid_encoder_deps="libxvid"
2977 libzvbi_teletext_decoder_deps="libzvbi"
2978 videotoolbox_suggest="coreservices"
2979 videotoolbox_deps="corefoundation coremedia corevideo"
2980 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2981
2982 # demuxers / muxers
2983 ac3_demuxer_select="ac3_parser"
2984 aiff_muxer_select="iso_media"
2985 asf_demuxer_select="riffdec"
2986 asf_o_demuxer_select="riffdec"
2987 asf_muxer_select="riffenc"
2988 asf_stream_muxer_select="asf_muxer"
2989 avi_demuxer_select="iso_media riffdec exif"
2990 avi_muxer_select="riffenc"
2991 caf_demuxer_select="iso_media riffdec"
2992 caf_muxer_select="iso_media"
2993 dash_muxer_select="mp4_muxer"
2994 dash_demuxer_deps="libxml2"
2995 dirac_demuxer_select="dirac_parser"
2996 dts_demuxer_select="dca_parser"
2997 dtshd_demuxer_select="dca_parser"
2998 dv_demuxer_select="dvprofile"
2999 dv_muxer_select="dvprofile"
3000 dxa_demuxer_select="riffdec"
3001 eac3_demuxer_select="ac3_parser"
3002 f4v_muxer_select="mov_muxer"
3003 fifo_muxer_deps="threads"
3004 flac_demuxer_select="flac_parser"
3005 hds_muxer_select="flv_muxer"
3006 hls_muxer_select="mpegts_muxer"
3007 hls_muxer_suggest="gcrypt openssl"
3008 image2_alias_pix_demuxer_select="image2_demuxer"
3009 image2_brender_pix_demuxer_select="image2_demuxer"
3010 ipod_muxer_select="mov_muxer"
3011 ismv_muxer_select="mov_muxer"
3012 matroska_audio_muxer_select="matroska_muxer"
3013 matroska_demuxer_select="iso_media riffdec"
3014 matroska_demuxer_suggest="bzlib lzo zlib"
3015 matroska_muxer_select="iso_media riffenc"
3016 mmf_muxer_select="riffenc"
3017 mov_demuxer_select="iso_media riffdec"
3018 mov_demuxer_suggest="zlib"
3019 mov_muxer_select="iso_media riffenc rtpenc_chain"
3020 mp3_demuxer_select="mpegaudio_parser"
3021 mp3_muxer_select="mpegaudioheader"
3022 mp4_muxer_select="mov_muxer"
3023 mpegts_demuxer_select="iso_media"
3024 mpegts_muxer_select="adts_muxer latm_muxer"
3025 mpegtsraw_demuxer_select="mpegts_demuxer"
3026 mxf_d10_muxer_select="mxf_muxer"
3027 mxf_opatom_muxer_select="mxf_muxer"
3028 nut_muxer_select="riffenc"
3029 nuv_demuxer_select="riffdec"
3030 oga_muxer_select="ogg_muxer"
3031 ogg_demuxer_select="dirac_parse"
3032 ogv_muxer_select="ogg_muxer"
3033 opus_muxer_select="ogg_muxer"
3034 psp_muxer_select="mov_muxer"
3035 rtp_demuxer_select="sdp_demuxer"
3036 rtp_muxer_select="golomb"
3037 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3038 rtsp_demuxer_select="http_protocol rtpdec"
3039 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3040 sap_demuxer_select="sdp_demuxer"
3041 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3042 sdp_demuxer_select="rtpdec"
3043 smoothstreaming_muxer_select="ismv_muxer"
3044 spdif_demuxer_select="adts_header"
3045 spdif_muxer_select="adts_header"
3046 spx_muxer_select="ogg_muxer"
3047 swf_demuxer_suggest="zlib"
3048 tak_demuxer_select="tak_parser"
3049 tg2_muxer_select="mov_muxer"
3050 tgp_muxer_select="mov_muxer"
3051 vobsub_demuxer_select="mpegps_demuxer"
3052 w64_demuxer_select="wav_demuxer"
3053 w64_muxer_select="wav_muxer"
3054 wav_demuxer_select="riffdec"
3055 wav_muxer_select="riffenc"
3056 webm_muxer_select="iso_media riffenc"
3057 webm_dash_manifest_demuxer_select="matroska_demuxer"
3058 wtv_demuxer_select="mpegts_demuxer riffdec"
3059 wtv_muxer_select="mpegts_muxer riffenc"
3060 xmv_demuxer_select="riffdec"
3061 xwma_demuxer_select="riffdec"
3062
3063 # indevs / outdevs
3064 alsa_indev_deps="alsa"
3065 alsa_outdev_deps="alsa"
3066 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3067 avfoundation_indev_suggest="coregraphics applicationservices"
3068 avfoundation_indev_extralibs="-framework Foundation"
3069 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3070 caca_outdev_deps="libcaca"
3071 decklink_deps_any="libdl LoadLibrary"
3072 decklink_indev_deps="decklink threads"
3073 decklink_indev_extralibs="-lstdc++"
3074 decklink_outdev_deps="decklink threads"
3075 decklink_outdev_extralibs="-lstdc++"
3076 libndi_newtek_indev_deps="libndi_newtek"
3077 libndi_newtek_indev_extralibs="-lndi"
3078 libndi_newtek_outdev_deps="libndi_newtek"
3079 libndi_newtek_outdev_extralibs="-lndi"
3080 dshow_indev_deps="IBaseFilter"
3081 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3082 fbdev_indev_deps="linux_fb_h"
3083 fbdev_outdev_deps="linux_fb_h"
3084 gdigrab_indev_deps="CreateDIBSection"
3085 gdigrab_indev_extralibs="-lgdi32"
3086 gdigrab_indev_select="bmp_decoder"
3087 iec61883_indev_deps="libiec61883"
3088 jack_indev_deps="libjack"
3089 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3090 kmsgrab_indev_deps="libdrm"
3091 lavfi_indev_deps="avfilter"
3092 libcdio_indev_deps="libcdio"
3093 libdc1394_indev_deps="libdc1394"
3094 openal_indev_deps="openal"
3095 opengl_outdev_deps="opengl"
3096 oss_indev_deps_any="sys_soundcard_h"
3097 oss_outdev_deps_any="sys_soundcard_h"
3098 pulse_indev_deps="libpulse"
3099 pulse_outdev_deps="libpulse"
3100 sdl2_outdev_deps="sdl2"
3101 sndio_indev_deps="sndio"
3102 sndio_outdev_deps="sndio"
3103 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3104 v4l2_indev_suggest="libv4l2"
3105 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3106 v4l2_outdev_suggest="libv4l2"
3107 vfwcap_indev_deps="vfw32 vfwcap_defines"
3108 xcbgrab_indev_deps="libxcb"
3109 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3110 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3111 xv_outdev_extralibs="-lXv -lX11 -lXext"
3112
3113 # protocols
3114 async_protocol_deps="threads"
3115 bluray_protocol_deps="libbluray"
3116 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3117 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3118 ffrtmpcrypt_protocol_select="tcp_protocol"
3119 ffrtmphttp_protocol_conflict="librtmp_protocol"
3120 ffrtmphttp_protocol_select="http_protocol"
3121 ftp_protocol_select="tcp_protocol"
3122 gopher_protocol_select="network"
3123 http_protocol_select="tcp_protocol"
3124 http_protocol_suggest="zlib"
3125 httpproxy_protocol_select="tcp_protocol"
3126 httpproxy_protocol_suggest="zlib"
3127 https_protocol_select="tls_protocol"
3128 https_protocol_suggest="zlib"
3129 icecast_protocol_select="http_protocol"
3130 librtmp_protocol_deps="librtmp"
3131 librtmpe_protocol_deps="librtmp"
3132 librtmps_protocol_deps="librtmp"
3133 librtmpt_protocol_deps="librtmp"
3134 librtmpte_protocol_deps="librtmp"
3135 libsmbclient_protocol_deps="libsmbclient gplv3"
3136 libssh_protocol_deps="libssh"
3137 mmsh_protocol_select="http_protocol"
3138 mmst_protocol_select="network"
3139 rtmp_protocol_conflict="librtmp_protocol"
3140 rtmp_protocol_select="tcp_protocol"
3141 rtmp_protocol_suggest="zlib"
3142 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3143 rtmpe_protocol_suggest="zlib"
3144 rtmps_protocol_conflict="librtmp_protocol"
3145 rtmps_protocol_select="tls_protocol"
3146 rtmps_protocol_suggest="zlib"
3147 rtmpt_protocol_select="ffrtmphttp_protocol"
3148 rtmpt_protocol_suggest="zlib"
3149 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3150 rtmpte_protocol_suggest="zlib"
3151 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3152 rtmpts_protocol_suggest="zlib"
3153 rtp_protocol_select="udp_protocol"
3154 schannel_conflict="openssl gnutls"
3155 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3156 sctp_protocol_select="network"
3157 securetransport_conflict="openssl gnutls"
3158 srtp_protocol_select="rtp_protocol srtp"
3159 tcp_protocol_select="network"
3160 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3161 tls_protocol_select="tcp_protocol"
3162 udp_protocol_select="network"
3163 udplite_protocol_select="network"
3164 unix_protocol_deps="sys_un_h"
3165 unix_protocol_select="network"
3166
3167 # filters
3168 afftfilt_filter_deps="avcodec"
3169 afftfilt_filter_select="fft"
3170 afir_filter_deps="avcodec"
3171 afir_filter_select="fft"
3172 amovie_filter_deps="avcodec avformat"
3173 aresample_filter_deps="swresample"
3174 ass_filter_deps="libass"
3175 atempo_filter_deps="avcodec"
3176 atempo_filter_select="rdft"
3177 azmq_filter_deps="libzmq"
3178 blackframe_filter_deps="gpl"
3179 boxblur_filter_deps="gpl"
3180 bs2b_filter_deps="libbs2b"
3181 colormatrix_filter_deps="gpl"
3182 coreimage_filter_deps="coreimage appkit"
3183 coreimage_filter_extralibs="-framework OpenGL"
3184 coreimagesrc_filter_deps="coreimage appkit"
3185 coreimagesrc_filter_extralibs="-framework OpenGL"
3186 cover_rect_filter_deps="avcodec avformat gpl"
3187 cropdetect_filter_deps="gpl"
3188 deinterlace_qsv_filter_deps="libmfx"
3189 deinterlace_vaapi_filter_deps="vaapi"
3190 delogo_filter_deps="gpl"
3191 deshake_filter_select="pixelutils"
3192 deshake_filter_suggest="opencl"
3193 drawtext_filter_deps="libfreetype"
3194 drawtext_filter_suggest="libfontconfig libfribidi"
3195 elbg_filter_deps="avcodec"
3196 eq_filter_deps="gpl"
3197 fftfilt_filter_deps="avcodec"
3198 fftfilt_filter_select="rdft"
3199 find_rect_filter_deps="avcodec avformat gpl"
3200 firequalizer_filter_deps="avcodec"
3201 firequalizer_filter_select="rdft"
3202 flite_filter_deps="libflite"
3203 framerate_filter_select="pixelutils"
3204 frei0r_filter_deps="frei0r libdl"
3205 frei0r_src_filter_deps="frei0r libdl"
3206 fspp_filter_deps="gpl"
3207 geq_filter_deps="gpl"
3208 histeq_filter_deps="gpl"
3209 hqdn3d_filter_deps="gpl"
3210 interlace_filter_deps="gpl"
3211 kerndeint_filter_deps="gpl"
3212 ladspa_filter_deps="ladspa libdl"
3213 mcdeint_filter_deps="avcodec gpl"
3214 movie_filter_deps="avcodec avformat"
3215 mpdecimate_filter_deps="gpl"
3216 mpdecimate_filter_select="pixelutils"
3217 mptestsrc_filter_deps="gpl"
3218 negate_filter_deps="lut_filter"
3219 nnedi_filter_deps="gpl"
3220 ocr_filter_deps="libtesseract"
3221 ocv_filter_deps="libopencv"
3222 overlay_qsv_filter_deps="libmfx"
3223 overlay_qsv_filter_select="qsvvpp"
3224 owdenoise_filter_deps="gpl"
3225 pan_filter_deps="swresample"
3226 perspective_filter_deps="gpl"
3227 phase_filter_deps="gpl"
3228 pp7_filter_deps="gpl"
3229 pp_filter_deps="gpl postproc"
3230 pullup_filter_deps="gpl"
3231 removelogo_filter_deps="avcodec avformat swscale"
3232 repeatfields_filter_deps="gpl"
3233 resample_filter_deps="avresample"
3234 rubberband_filter_deps="librubberband"
3235 sab_filter_deps="gpl swscale"
3236 scale2ref_filter_deps="swscale"
3237 scale_filter_deps="swscale"
3238 scale_qsv_filter_deps="libmfx"
3239 select_filter_select="pixelutils"
3240 showcqt_filter_deps="avcodec avformat swscale"
3241 showcqt_filter_suggest="libfontconfig libfreetype"
3242 showcqt_filter_select="fft"
3243 showfreqs_filter_deps="avcodec"
3244 showfreqs_filter_select="fft"
3245 showspectrum_filter_deps="avcodec"
3246 showspectrum_filter_select="fft"
3247 showspectrumpic_filter_deps="avcodec"
3248 showspectrumpic_filter_select="fft"
3249 signature_filter_deps="gpl avcodec avformat"
3250 smartblur_filter_deps="gpl swscale"
3251 sofalizer_filter_deps="libmysofa avcodec"
3252 sofalizer_filter_select="fft"
3253 spectrumsynth_filter_deps="avcodec"
3254 spectrumsynth_filter_select="fft"
3255 spp_filter_deps="gpl avcodec"
3256 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3257 stereo3d_filter_deps="gpl"
3258 subtitles_filter_deps="avformat avcodec libass"
3259 super2xsai_filter_deps="gpl"
3260 pixfmts_super2xsai_test_deps="super2xsai_filter"
3261 tinterlace_filter_deps="gpl"
3262 tinterlace_merge_test_deps="tinterlace_filter"
3263 tinterlace_pad_test_deps="tinterlace_filter"
3264 tonemap_filter_deps="const_nan"
3265 uspp_filter_deps="gpl avcodec"
3266 unsharp_filter_suggest="opencl"
3267 vaguedenoiser_filter_deps="gpl"
3268 vidstabdetect_filter_deps="libvidstab"
3269 vidstabtransform_filter_deps="libvidstab"
3270 libvmaf_filter_deps="libvmaf"
3271 zmq_filter_deps="libzmq"
3272 zoompan_filter_deps="swscale"
3273 zscale_filter_deps="libzimg const_nan"
3274 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3275 vpp_qsv_filter_deps="libmfx"
3276 vpp_qsv_filter_select="qsvvpp"
3277
3278 # examples
3279 avio_dir_cmd_deps="avformat avutil"
3280 avio_reading_deps="avformat avcodec avutil"
3281 decode_audio_example_deps="avcodec avutil"
3282 decode_video_example_deps="avcodec avutil"
3283 demuxing_decoding_example_deps="avcodec avformat avutil"
3284 encode_audio_example_deps="avcodec avutil"
3285 encode_video_example_deps="avcodec avutil"
3286 extract_mvs_example_deps="avcodec avformat avutil"
3287 filter_audio_example_deps="avfilter avutil"
3288 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3289 filtering_video_example_deps="avfilter avcodec avformat avutil"
3290 http_multiclient_example_deps="avformat avutil fork"
3291 hw_decode_example_deps="avcodec avformat avutil"
3292 metadata_example_deps="avformat avutil"
3293 muxing_example_deps="avcodec avformat avutil swscale"
3294 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3295 remuxing_example_deps="avcodec avformat avutil"
3296 resampling_audio_example_deps="avutil swresample"
3297 scaling_video_example_deps="avutil swscale"
3298 transcode_aac_example_deps="avcodec avformat swresample"
3299 transcoding_example_deps="avfilter avcodec avformat avutil"
3300
3301 # EXTRALIBS_LIST
3302 cpu_init_extralibs="pthreads_extralibs"
3303 cws2fws_extralibs="zlib_extralibs"
3304
3305 # libraries, in linking order
3306 avcodec_deps="avutil"
3307 avcodec_suggest="libm"
3308 avcodec_select="null_bsf"
3309 avdevice_deps="avformat avcodec avutil"
3310 avdevice_suggest="libm"
3311 avfilter_deps="avutil"
3312 avfilter_suggest="libm"
3313 avformat_deps="avcodec avutil"
3314 avformat_suggest="libm network zlib"
3315 avresample_deps="avutil"
3316 avresample_suggest="libm"
3317 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3318 postproc_deps="avutil gpl"
3319 postproc_suggest="libm"
3320 swresample_deps="avutil"
3321 swresample_suggest="libm libsoxr"
3322 swscale_deps="avutil"
3323 swscale_suggest="libm"
3324
3325 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3326 avfilter_extralibs="pthreads_extralibs"
3327 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3328
3329 # programs
3330 ffmpeg_deps="avcodec avfilter avformat swresample"
3331 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3332                null_filter
3333                trim_filter"
3334 ffmpeg_suggest="ole32 psapi shell32"
3335 ffplay_deps="avcodec avformat swscale swresample sdl2"
3336 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3337 ffplay_suggest="shell32"
3338 ffprobe_deps="avcodec avformat"
3339 ffprobe_suggest="shell32"
3340 ffserver_deps="avformat fork sarestart"
3341 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3342
3343 # documentation
3344 podpages_deps="perl"
3345 manpages_deps="perl pod2man"
3346 htmlpages_deps="perl"
3347 htmlpages_deps_any="makeinfo_html texi2html"
3348 txtpages_deps="perl makeinfo"
3349 doc_deps_any="manpages htmlpages podpages txtpages"
3350
3351 # default parameters
3352
3353 logfile="ffbuild/config.log"
3354
3355 # installation paths
3356 prefix_default="/usr/local"
3357 bindir_default='${prefix}/bin'
3358 datadir_default='${prefix}/share/ffmpeg'
3359 docdir_default='${prefix}/share/doc/ffmpeg'
3360 incdir_default='${prefix}/include'
3361 libdir_default='${prefix}/lib'
3362 mandir_default='${prefix}/share/man'
3363
3364 # toolchain
3365 ar_default="ar"
3366 cc_default="gcc"
3367 cxx_default="g++"
3368 host_cc_default="gcc"
3369 doxygen_default="doxygen"
3370 install="install"
3371 ln_s_default="ln -s -f"
3372 nm_default="nm -g"
3373 pkg_config_default=pkg-config
3374 ranlib_default="ranlib"
3375 strip_default="strip"
3376 version_script='--version-script'
3377 x86asmexe_default="nasm"
3378 windres_default="windres"
3379 nvcc_default="nvcc"
3380 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3381 striptype="direct"
3382
3383 # OS
3384 target_os_default=$(tolower $(uname -s))
3385 host_os=$target_os_default
3386
3387 # machine
3388 if test "$target_os_default" = aix; then
3389     arch_default=$(uname -p)
3390     strip_default="strip -X32_64"
3391 else
3392     arch_default=$(uname -m)
3393 fi
3394 cpu="generic"
3395 intrinsics="none"
3396
3397 # configurable options
3398 enable $PROGRAM_LIST
3399 enable $DOCUMENT_LIST
3400 enable $EXAMPLE_LIST
3401 enable $(filter_out avresample $LIBRARY_LIST)
3402 enable stripping
3403
3404 enable asm
3405 enable debug
3406 enable doc
3407 enable faan faandct faanidct
3408 enable optimizations
3409 enable runtime_cpudetect
3410 enable safe_bitstream_reader
3411 enable static
3412 enable swscale_alpha
3413 enable valgrind_backtrace
3414
3415 sws_max_filter_size_default=256
3416 set_default sws_max_filter_size
3417
3418 # internal components are enabled by default
3419 enable $EXTRALIBS_LIST
3420
3421 # Avoid external, non-system, libraries getting enabled by dependency resolution
3422 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3423
3424 # build settings
3425 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3426 LIBPREF="lib"
3427 LIBSUF=".a"
3428 FULLNAME='$(NAME)$(BUILDSUF)'
3429 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3430 SLIBPREF="lib"
3431 SLIBSUF=".so"
3432 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3433 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3434 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3435 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3436 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3437 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3438 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3439
3440 asflags_filter=echo
3441 cflags_filter=echo
3442 ldflags_filter=echo
3443
3444 AS_C='-c'
3445 AS_O='-o $@'
3446 CC_C='-c'
3447 CC_E='-E -o $@'
3448 CC_O='-o $@'
3449 CXX_C='-c'
3450 CXX_O='-o $@'
3451 OBJCC_C='-c'
3452 OBJCC_E='-E -o $@'
3453 OBJCC_O='-o $@'
3454 X86ASM_O='-o $@'
3455 LD_O='-o $@'
3456 LD_LIB='-l%'
3457 LD_PATH='-L'
3458 HOSTCC_C='-c'
3459 HOSTCC_E='-E -o $@'
3460 HOSTCC_O='-o $@'
3461 HOSTLD_O='-o $@'
3462 NVCC_C='-c'
3463 NVCC_O='-o $@'
3464
3465 host_extralibs='-lm'
3466 host_cflags_filter=echo
3467 host_ldflags_filter=echo
3468
3469 target_path='$(CURDIR)'
3470
3471 # since the object filename is not given with the -MM flag, the compiler
3472 # is only able to print the basename, and we must add the path ourselves
3473 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3474 DEPFLAGS='-MM'
3475
3476 mkdir -p ffbuild
3477
3478 # find source path
3479 if test -f configure; then
3480     source_path=.
3481 else
3482     source_path=$(cd $(dirname "$0"); pwd)
3483     case "$source_path" in
3484         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3485     esac
3486     test -e "$source_path/config.h" &&
3487         die "Out of tree builds are impossible with config.h in source dir."
3488 fi
3489
3490 for v in "$@"; do
3491     r=${v#*=}
3492     l=${v%"$r"}
3493     r=$(sh_quote "$r")
3494     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3495 done
3496
3497 find_things(){
3498     thing=$1
3499     pattern=$2
3500     file=$source_path/$3
3501     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3502 }
3503
3504 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3505 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3506 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3507 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3508 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3509 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3510 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3511 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3512 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3513
3514 find_things_extern(){
3515     thing=$1
3516     pattern=$2
3517     file=$source_path/$3
3518     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3519 }
3520
3521 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3522 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3523
3524 AVCODEC_COMPONENTS_LIST="
3525     $BSF_LIST
3526     $DECODER_LIST
3527     $ENCODER_LIST
3528     $HWACCEL_LIST
3529     $PARSER_LIST
3530 "
3531
3532 AVDEVICE_COMPONENTS_LIST="
3533     $INDEV_LIST
3534     $OUTDEV_LIST
3535 "
3536
3537 AVFILTER_COMPONENTS_LIST="
3538     $FILTER_LIST
3539 "
3540
3541 AVFORMAT_COMPONENTS_LIST="
3542     $DEMUXER_LIST
3543     $MUXER_LIST
3544     $PROTOCOL_LIST
3545 "
3546
3547 ALL_COMPONENTS="
3548     $AVCODEC_COMPONENTS_LIST
3549     $AVDEVICE_COMPONENTS_LIST
3550     $AVFILTER_COMPONENTS_LIST
3551     $AVFORMAT_COMPONENTS_LIST
3552 "
3553
3554 for n in $COMPONENT_LIST; do
3555     v=$(toupper ${n%s})_LIST
3556     eval enable \$$v
3557     eval ${n}_if_any="\$$v"
3558 done
3559
3560 enable $ARCH_EXT_LIST
3561
3562 die_unknown(){
3563     echo "Unknown option \"$1\"."
3564     echo "See $0 --help for available options."
3565     exit 1
3566 }
3567
3568 print_in_columns() {
3569     cols=$(expr $ncols / 24)
3570     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3571 }
3572
3573 show_list() {
3574     suffix=_$1
3575     shift
3576     echo $* | sed s/$suffix//g | print_in_columns
3577     exit 0
3578 }
3579
3580 rand_list(){
3581     IFS=', '
3582     set -- $*
3583     unset IFS
3584     for thing; do
3585         comp=${thing%:*}
3586         prob=${thing#$comp}
3587         prob=${prob#:}
3588         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3589         echo "prob ${prob:-0.5}"
3590         printf '%s\n' $comp
3591     done
3592 }
3593
3594 do_random(){
3595     action=$1
3596     shift
3597     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3598     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3599 }
3600
3601 for opt do
3602     optval="${opt#*=}"
3603     case "$opt" in
3604         --extra-ldflags=*)
3605             add_ldflags $optval
3606         ;;
3607         --extra-ldexeflags=*)
3608             add_ldexeflags $optval
3609         ;;
3610         --extra-ldsoflags=*)
3611             add_ldsoflags $optval
3612         ;;
3613         --extra-ldlibflags=*)
3614             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3615                  "removed in the future. Use --extra-ldsoflags instead."
3616             add_ldsoflags $optval
3617         ;;
3618         --extra-libs=*)
3619             add_extralibs $optval
3620         ;;
3621         --disable-devices)
3622             disable $INDEV_LIST $OUTDEV_LIST
3623         ;;
3624         --enable-debug=*)
3625             debuglevel="$optval"
3626         ;;
3627         --disable-programs)
3628             disable $PROGRAM_LIST
3629         ;;
3630         --disable-everything)
3631             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3632         ;;
3633         --disable-all)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635             disable $LIBRARY_LIST $PROGRAM_LIST doc
3636             enable avutil
3637         ;;
3638         --enable-random|--disable-random)
3639             action=${opt%%-random}
3640             do_random ${action#--} $COMPONENT_LIST
3641         ;;
3642         --enable-random=*|--disable-random=*)
3643             action=${opt%%-random=*}
3644             do_random ${action#--} $optval
3645         ;;
3646         --enable-sdl)
3647             enable sdl2
3648         ;;
3649         --enable-*=*|--disable-*=*)
3650             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3651             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3652             eval list=\$$(toupper $thing)_LIST
3653             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3654             list=$(filter "$name" $list)
3655             [ "$list" = "" ] && warn "Option $opt did not match anything"
3656             $action $list
3657         ;;
3658         --enable-yasm|--disable-yasm)
3659             warn "The ${opt} option is only provided for compatibility and will be\n"\
3660                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3661             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3662         ;;
3663         --yasmexe=*)
3664             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3665                  "removed in the future. Use --x86asmexe instead."
3666             x86asmexe="$optval"
3667         ;;
3668         --enable-?*|--disable-?*)
3669             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3670             if is_in $option $COMPONENT_LIST; then
3671                 test $action = disable && action=unset
3672                 eval $action \$$(toupper ${option%s})_LIST
3673             elif is_in $option $CMDLINE_SELECT; then
3674                 $action $option
3675             else
3676                 die_unknown $opt
3677             fi
3678         ;;
3679         --list-*)
3680             NAME="${opt#--list-}"
3681             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3682             NAME=${NAME%s}
3683             eval show_list $NAME \$$(toupper $NAME)_LIST
3684         ;;
3685         --help|-h) show_help
3686         ;;
3687         --quiet|-q) quiet=yes
3688         ;;
3689         --fatal-warnings) enable fatal_warnings
3690         ;;
3691         --libfuzzer=*)
3692             libfuzzer_path="$optval"
3693         ;;
3694         *)
3695             optname="${opt%%=*}"
3696             optname="${optname#--}"
3697             optname=$(echo "$optname" | sed 's/-/_/g')
3698             if is_in $optname $CMDLINE_SET; then
3699                 eval $optname='$optval'
3700             elif is_in $optname $CMDLINE_APPEND; then
3701                 append $optname "$optval"
3702             else
3703                 die_unknown $opt
3704             fi
3705         ;;
3706     esac
3707 done
3708
3709 for e in $env; do
3710     eval "export $e"
3711 done
3712
3713 if disabled autodetect; then
3714
3715     # Unless iconv is explicitely disabled by the user, we still want to probe
3716     # for the iconv from the libc.
3717     disabled iconv || enable libc_iconv
3718
3719     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3720     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3721 fi
3722 # Mark specifically enabled, but normally autodetected libraries as requested.
3723 for lib in $AUTODETECT_LIBS; do
3724     enabled $lib && request $lib
3725 done
3726 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3727 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3728 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3729
3730 disabled logging && logfile=/dev/null
3731
3732 die_license_disabled() {
3733     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3734 }
3735
3736 die_license_disabled_gpl() {
3737     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3738 }
3739
3740 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3741 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3742
3743 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3744 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3745
3746 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3747
3748 enabled_all gnutls openssl &&
3749     die "GnuTLS and OpenSSL must not be enabled at the same time."
3750
3751 # Disable all the library-specific components if the library itself
3752 # is disabled, see AVCODEC_LIST and following _LIST variables.
3753
3754 disable_components(){
3755     disabled ${1} && disable $(
3756         eval components="\$$(toupper ${1})_COMPONENTS"
3757         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3758     )
3759 }
3760
3761 map 'disable_components $v' $LIBRARY_LIST
3762
3763 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3764 set >> $logfile
3765
3766 test -n "$valgrind" && toolchain="valgrind-memcheck"
3767
3768 enabled ossfuzz && {
3769     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3770     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3771 }
3772
3773 case "$toolchain" in
3774     *-asan)
3775         cc_default="${toolchain%-asan}"
3776         add_cflags  -fsanitize=address
3777         add_ldflags -fsanitize=address
3778     ;;
3779     *-msan)
3780         cc_default="${toolchain%-msan}"
3781         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3782         add_ldflags -fsanitize=memory
3783     ;;
3784     *-tsan)
3785         cc_default="${toolchain%-tsan}"
3786         add_cflags  -fsanitize=thread -fPIE
3787         add_ldflags -fsanitize=thread -pie
3788         case "$toolchain" in
3789             gcc-tsan)
3790                 add_cflags  -fPIC
3791                 add_ldflags -fPIC
3792                 ;;
3793         esac
3794     ;;
3795     *-usan)
3796         cc_default="${toolchain%-usan}"
3797         add_cflags  -fsanitize=undefined
3798         add_ldflags -fsanitize=undefined
3799     ;;
3800     valgrind-*)
3801         target_exec_default="valgrind"
3802         case "$toolchain" in
3803             valgrind-massif)
3804                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3805                 ;;
3806             valgrind-memcheck)
3807                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3808                 ;;
3809         esac
3810     ;;
3811     msvc)
3812         # Check whether the current MSVC version needs the C99 converter.
3813         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3814         # support enough of C99 to build ffmpeg. Default to the new
3815         # behaviour if the regexp was unable to match anything, since this
3816         # successfully parses the version number of existing supported
3817         # versions that require the converter (MSVC 2010 and 2012).
3818         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3819         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3820             cc_default="cl"
3821             cxx_default="cl"
3822         else
3823             cc_default="c99wrap cl"
3824             cxx_default="c99wrap cl"
3825         fi
3826         ld_default="$source_path/compat/windows/mslink"
3827         nm_default="dumpbin -symbols"
3828         ar_default="lib"
3829         case "$arch" in
3830         arm*)
3831             as_default="armasm"
3832             ;;
3833         esac
3834         target_os_default="win32"
3835         # Use a relative path for TMPDIR. This makes sure all the
3836         # ffconf temp files are written with a relative path, avoiding
3837         # issues with msys/win32 path conversion for MSVC parameters
3838         # such as -Fo<file> or -out:<file>.
3839         TMPDIR=.
3840     ;;
3841     icl)
3842         cc_default="icl"
3843         ld_default="xilink"
3844         nm_default="dumpbin -symbols"
3845         ar_default="xilib"
3846         target_os_default="win32"
3847         TMPDIR=.
3848     ;;
3849     gcov)
3850         add_cflags  -fprofile-arcs -ftest-coverage
3851         add_ldflags -fprofile-arcs -ftest-coverage
3852     ;;
3853     llvm-cov)
3854         add_cflags -fprofile-arcs -ftest-coverage
3855         add_ldflags --coverage
3856     ;;
3857     hardened)
3858         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3859         add_cflags   -fno-strict-overflow -fstack-protector-all
3860         add_ldflags  -Wl,-z,relro -Wl,-z,now
3861         add_cflags   -fPIE
3862         add_ldexeflags -fPIE -pie
3863     ;;
3864     ?*)
3865         die "Unknown toolchain $toolchain"
3866     ;;
3867 esac
3868
3869 test -n "$cross_prefix" && enable cross_compile
3870
3871 if enabled cross_compile; then
3872     test -n "$arch" && test -n "$target_os" ||
3873         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3874 fi
3875
3876 ar_default="${cross_prefix}${ar_default}"
3877 cc_default="${cross_prefix}${cc_default}"
3878 cxx_default="${cross_prefix}${cxx_default}"
3879 nm_default="${cross_prefix}${nm_default}"
3880 pkg_config_default="${cross_prefix}${pkg_config_default}"
3881 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3882     ranlib_default="${cross_prefix}${ranlib_default} -D"
3883 else
3884     ranlib_default="${cross_prefix}${ranlib_default}"
3885 fi
3886 strip_default="${cross_prefix}${strip_default}"
3887 windres_default="${cross_prefix}${windres_default}"
3888
3889 sysinclude_default="${sysroot}/usr/include"
3890
3891 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3892     target_exec target_os x86asmexe nvcc
3893 enabled cross_compile || host_cc_default=$cc
3894 set_default host_cc
3895
3896 pkg_config_fail_message=""
3897 if ! $pkg_config --version >/dev/null 2>&1; then
3898     warn "$pkg_config not found, library detection may fail."
3899     pkg_config=false
3900 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3901     pkg_config_fail_message="
3902 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3903 fi
3904
3905 if test $doxygen != $doxygen_default && \
3906   ! $doxygen --version >/dev/null 2>&1; then
3907     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3908 fi
3909
3910 exesuf() {
3911     case $1 in
3912         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3913     esac
3914 }
3915
3916 EXESUF=$(exesuf $target_os)
3917 HOSTEXESUF=$(exesuf $host_os)
3918
3919 # set temporary file name
3920 : ${TMPDIR:=$TEMPDIR}
3921 : ${TMPDIR:=$TMP}
3922 : ${TMPDIR:=/tmp}
3923
3924 if [ -n "$tempprefix" ] ; then
3925     mktemp(){
3926         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3927         echo "$tmpname"
3928         mkdir "$tmpname"
3929     }
3930 elif ! check_cmd mktemp -u XXXXXX; then
3931     # simple replacement for missing mktemp
3932     # NOT SAFE FOR GENERAL USE
3933     mktemp(){
3934         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3935         echo "$tmpname"
3936         mkdir "$tmpname"
3937     }
3938 fi
3939
3940 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3941     die "Unable to create temporary directory in $TMPDIR."
3942
3943 tmpfile(){
3944     tmp="${FFTMPDIR}/test"$2
3945     (set -C; exec > $tmp) 2> /dev/null ||
3946         die "Unable to create temporary file in $FFTMPDIR."
3947     eval $1=$tmp
3948 }
3949
3950 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3951 trap 'exit 2' INT
3952
3953 tmpfile TMPASM .asm
3954 tmpfile TMPC   .c
3955 tmpfile TMPCPP .cpp
3956 tmpfile TMPE   $EXESUF
3957 tmpfile TMPH   .h
3958 tmpfile TMPM   .m
3959 tmpfile TMPO   .o
3960 tmpfile TMPS   .S
3961 tmpfile TMPSH  .sh
3962 tmpfile TMPV   .ver
3963
3964 unset -f mktemp
3965
3966 chmod +x $TMPE
3967
3968 # make sure we can execute files in $TMPDIR
3969 cat > $TMPSH 2>> $logfile <<EOF
3970 #! /bin/sh
3971 EOF
3972 chmod +x $TMPSH >> $logfile 2>&1
3973 if ! $TMPSH >> $logfile 2>&1; then
3974     cat <<EOF
3975 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3976 variable to another directory and make sure that it is not mounted noexec.
3977 EOF
3978     die "Sanity test failed."
3979 fi
3980
3981 armasm_flags(){
3982     for flag; do
3983         case $flag in
3984             # Filter out MSVC cl.exe options from cflags that shouldn't
3985             # be passed to gas-preprocessor
3986             -M[TD]*)                                            ;;
3987             *)                  echo $flag                      ;;
3988         esac
3989    done
3990 }
3991
3992 cparser_flags(){
3993     for flag; do
3994         case $flag in
3995             -Wno-switch)             echo -Wno-switch-enum ;;
3996             -Wno-format-zero-length) ;;
3997             -Wdisabled-optimization) ;;
3998             -Wno-pointer-sign)       echo -Wno-other ;;
3999             *)                       echo $flag ;;
4000         esac
4001     done
4002 }
4003
4004 msvc_common_flags(){
4005     for flag; do
4006         case $flag in
4007             # In addition to specifying certain flags under the compiler
4008             # specific filters, they must be specified here as well or else the
4009             # generic catch all at the bottom will print the original flag.
4010             -Wall)                ;;
4011             -Wextra)              ;;
4012             -std=c99)             ;;
4013             # Common flags
4014             -fomit-frame-pointer) ;;
4015             -g)                   echo -Z7 ;;
4016             -fno-math-errno)      ;;
4017             -fno-common)          ;;
4018             -fno-signed-zeros)    ;;
4019             -fPIC)                ;;
4020             -mthumb)              ;;
4021             -march=*)             ;;
4022             -lz)                  echo zlib.lib ;;
4023             -lx264)               echo libx264.lib ;;
4024             -lstdc++)             ;;
4025             -l*)                  echo ${flag#-l}.lib ;;
4026             -LARGEADDRESSAWARE)   echo $flag ;;
4027             -L*)                  echo -libpath:${flag#-L} ;;
4028             *)                    echo $flag ;;
4029         esac
4030     done
4031 }
4032
4033 msvc_flags(){
4034     msvc_common_flags "$@"
4035     for flag; do
4036         case $flag in
4037             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4038                                        -wd4554 ;;
4039             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4040                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4041                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4042                                        -wd4307 \
4043                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4044         esac
4045     done
4046 }
4047
4048 icl_flags(){
4049     msvc_common_flags "$@"
4050     for flag; do
4051         case $flag in
4052             # Despite what Intel's documentation says -Wall, which is supported
4053             # on Windows, does enable remarks so disable them here.
4054             -Wall)                echo $flag -Qdiag-disable:remark ;;
4055             -std=c99)             echo -Qstd=c99 ;;
4056             -flto)                echo -ipo ;;
4057         esac
4058     done
4059 }
4060
4061 icc_flags(){
4062     for flag; do
4063         case $flag in
4064             -flto)                echo -ipo ;;
4065             *)                    echo $flag ;;
4066         esac
4067     done
4068 }
4069
4070 pgi_flags(){
4071     for flag; do
4072         case $flag in
4073             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4074             -fomit-frame-pointer) echo -Mnoframe ;;
4075             -g)                   echo -gopt ;;
4076             *)                    echo $flag ;;
4077         esac
4078     done
4079 }
4080
4081 suncc_flags(){
4082     for flag; do
4083         case $flag in
4084             -march=*|-mcpu=*)
4085                 case "${flag#*=}" in
4086                     native)                   echo -xtarget=native       ;;
4087                     v9|niagara)               echo -xarch=sparc          ;;
4088                     ultrasparc)               echo -xarch=sparcvis       ;;
4089                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4090                     i586|pentium)             echo -xchip=pentium        ;;
4091                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4092                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4093                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4094                     pentium4*)          echo -xtarget=pentium4           ;;
4095                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4096                     *-sse3)             echo -xarch=sse3                 ;;
4097                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4098                     bonnell)                   echo -xarch=ssse3         ;;
4099                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4100                     westmere)                  echo -xtarget=westmere    ;;
4101                     silvermont)                echo -xarch=sse4_2        ;;
4102                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4103                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4104                                                echo -xarch=avx           ;;
4105                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4106                     btver1)                    echo -xarch=amdsse4a      ;;
4107                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4108                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4109                     k8|opteron|athlon64|athlon-fx)
4110                                                echo -xarch=sse2a         ;;
4111                     athlon*)                   echo -xarch=pentium_proa  ;;
4112                 esac
4113                 ;;
4114             -std=c99)             echo -xc99              ;;
4115             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4116             -fPIC)                echo -KPIC -xcode=pic32 ;;
4117             -W*,*)                echo $flag              ;;
4118             -f*-*|-W*|-mimpure-text)                      ;;
4119             -shared)              echo -G                 ;;
4120             *)                    echo $flag              ;;
4121         esac
4122     done
4123 }
4124
4125 tms470_flags(){
4126     for flag; do
4127         case $flag in
4128             -march=*|-mcpu=*)
4129                 case "${flag#*=}" in
4130                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4131                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4132                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4133                     armv6*|arm11*)          echo -mv=6   ;;
4134                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4135                                             echo -mv=5e  ;;
4136                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4137                 esac
4138                 ;;
4139             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4140             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4141             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4142             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4143             -msoft-float)   echo --float_support=vfplib       ;;
4144             -O[0-3]|-mf=*)  echo $flag                        ;;
4145             -g)             echo -g -mn                       ;;
4146             -pds=*)         echo $flag                        ;;
4147             -D*|-I*)        echo $flag                        ;;
4148             --gcc|--abi=*)  echo $flag                        ;;
4149             -me)            echo $flag                        ;;
4150         esac
4151     done
4152 }
4153
4154 probe_cc(){
4155     pfx=$1
4156     _cc=$2
4157     first=$3
4158
4159     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4160     unset _ld_o _ldflags _ld_lib _ld_path
4161     unset _depflags _DEPCMD _DEPFLAGS
4162     _flags_filter=echo
4163
4164     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4165         true # no-op to avoid reading stdin in following checks
4166     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4167         _type=llvm_gcc
4168         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4169         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4170         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4171         _cflags_speed='-O3'
4172         _cflags_size='-Os'
4173     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4174         _type=gcc
4175         gcc_version=$($_cc --version | head -n1)
4176         gcc_basever=$($_cc -dumpversion)
4177         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4178         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4179         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4180         case $gcc_basever in
4181             2) ;;
4182             2.*) ;;
4183             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4184         esac
4185         if [ "$first" = true ]; then
4186             case $gcc_basever in
4187                 4.2*)
4188                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4189             esac
4190         fi
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4194         _type=icc
4195         _ident=$($_cc --version | head -n1)
4196         _depflags='-MMD'
4197         _cflags_speed='-O3'
4198         _cflags_size='-Os'
4199         _cflags_noopt='-O1'
4200         _flags_filter=icc_flags
4201     elif $_cc -v 2>&1 | grep -q xlc; then
4202         _type=xlc
4203         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4204         _cflags_speed='-O5'
4205         _cflags_size='-O5 -qcompact'
4206     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4207         test -d "$sysroot" || die "No valid sysroot specified."
4208         _type=armcc
4209         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4210         armcc_conf="$PWD/armcc.conf"
4211         $_cc --arm_linux_configure                 \
4212              --arm_linux_config_file="$armcc_conf" \
4213              --configure_sysroot="$sysroot"        \
4214              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4215              die "Error creating armcc configuration file."
4216         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4217         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4218         as_default="${cross_prefix}gcc"
4219         _depflags='-MMD'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Os'
4222     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4223         _type=tms470
4224         _ident=$($_cc -version | head -n1 | tr -s ' ')
4225         _flags='--gcc --abi=eabi -me'
4226         _cc_e='-ppl -fe=$@'
4227         _cc_o='-fe=$@'
4228         _depflags='-ppa -ppd=$(@:.o=.d)'
4229         _cflags_speed='-O3 -mf=5'
4230         _cflags_size='-O3 -mf=2'
4231         _flags_filter=tms470_flags
4232     elif $_cc -v 2>&1 | grep -q clang; then
4233         _type=clang
4234         _ident=$($_cc --version 2>/dev/null | head -n1)
4235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4236         _cflags_speed='-O3'
4237         _cflags_size='-Oz'
4238     elif $_cc -V 2>&1 | grep -q Sun; then
4239         _type=suncc
4240         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4241         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4242         _DEPFLAGS='-xM1 -xc99'
4243         _ldflags='-std=c99'
4244         _cflags_speed='-O5'
4245         _cflags_size='-O5 -xspace'
4246         _flags_filter=suncc_flags
4247     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4248         _type=pathscale
4249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4251         _cflags_speed='-O2'
4252         _cflags_size='-Os'
4253         _flags_filter='filter_out -Wdisabled-optimization'
4254     elif $_cc -v 2>&1 | grep -q Open64; then
4255         _type=open64
4256         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4257         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4258         _cflags_speed='-O2'
4259         _cflags_size='-Os'
4260         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4261     elif $_cc -V 2>&1 | grep -q Portland; then
4262         _type=pgi
4263         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4264         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4265         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4266         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4267         _cflags_noopt="-O"
4268         _flags_filter=pgi_flags
4269     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4270         _type=armasm
4271         _ident=$($_cc | head -n1)
4272         # 4509: "This form of conditional instruction is deprecated"
4273         _flags="-nologo -ignore 4509"
4274         _flags_filter=armasm_flags
4275     elif $_cc 2>&1 | grep -q Intel; then
4276         _type=icl
4277         _ident=$($_cc 2>&1 | head -n1)
4278         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4279         # Not only is O3 broken on 13.x+ but it is slower on all previous
4280         # versions (tested) as well.
4281         _cflags_speed="-O2"
4282         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4283         if $_cc 2>&1 | grep -q Linker; then
4284             _ld_o='-out:$@'
4285         else
4286             _ld_o='-Fe$@'
4287         fi
4288         _cc_o='-Fo$@'
4289         _cc_e='-P'
4290         _flags_filter=icl_flags
4291         _ld_lib='lib%.a'
4292         _ld_path='-libpath:'
4293         # -Qdiag-error to make icl error when seeing certain unknown arguments
4294         _flags='-nologo -Qdiag-error:4044,10157'
4295         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4296         # with MSVC which enables it by default.
4297         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4298         disable stripping
4299     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4300         # lld can emulate multiple different linkers; in ms link.exe mode,
4301         # the -? parameter gives the help output which contains an identifyable
4302         # string, while it gives an error in other modes.
4303         _type=lld-link
4304         # The link.exe mode doesn't have a switch for getting the version,
4305         # but we can force it back to gnu mode and get the version from there.
4306         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4307         _ld_o='-out:$@'
4308         _flags_filter=msvc_flags
4309         _ld_lib='lib%.a'
4310         _ld_path='-libpath:'
4311     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4312         _type=msvc
4313         _ident=$($_cc 2>&1 | head -n1)
4314         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4315         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4316         _cflags_speed="-O2"
4317         _cflags_size="-O1"
4318         _cflags_noopt="-O1"
4319         if $_cc -nologo- 2>&1 | grep -q Linker; then
4320             _ld_o='-out:$@'
4321         else
4322             _ld_o='-Fe$@'
4323         fi
4324         _cc_o='-Fo$@'
4325         _cc_e='-P -Fi$@'
4326         _flags_filter=msvc_flags
4327         _ld_lib='lib%.a'
4328         _ld_path='-libpath:'
4329         _flags='-nologo'
4330         disable stripping
4331     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4332         _type=cparser
4333         _ident=$($_cc --version | head -n1)
4334         _depflags='-MMD'
4335         _cflags_speed='-O4'
4336         _cflags_size='-O2'
4337         _flags_filter=cparser_flags
4338     fi
4339
4340     eval ${pfx}_type=\$_type
4341     eval ${pfx}_ident=\$_ident
4342 }
4343
4344 set_ccvars(){
4345     eval ${1}_C=\${_cc_c-\${${1}_C}}
4346     eval ${1}_E=\${_cc_e-\${${1}_E}}
4347     eval ${1}_O=\${_cc_o-\${${1}_O}}
4348
4349     if [ -n "$_depflags" ]; then
4350         eval ${1}_DEPFLAGS=\$_depflags
4351     else
4352         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4353         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4354         eval DEP${1}FLAGS=\$_flags
4355     fi
4356 }
4357
4358 probe_cc cc "$cc" "true"
4359 cflags_filter=$_flags_filter
4360 cflags_speed=$_cflags_speed
4361 cflags_size=$_cflags_size
4362 cflags_noopt=$_cflags_noopt
4363 add_cflags $_flags $_cflags
4364 cc_ldflags=$_ldflags
4365 set_ccvars CC
4366 set_ccvars CXX
4367
4368 probe_cc hostcc "$host_cc"
4369 host_cflags_filter=$_flags_filter
4370 host_cflags_speed=$_cflags_speed
4371 add_host_cflags  $_flags $_cflags
4372 set_ccvars HOSTCC
4373
4374 test -n "$cc_type" && enable $cc_type ||
4375     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4376
4377 : ${as_default:=$cc}
4378 : ${objcc_default:=$cc}
4379 : ${dep_cc_default:=$cc}
4380 : ${ld_default:=$cc}
4381 : ${host_ld_default:=$host_cc}
4382 set_default ar as objcc dep_cc ld ln_s host_ld windres
4383
4384 probe_cc as "$as"
4385 asflags_filter=$_flags_filter
4386 add_asflags $_flags $_cflags
4387 set_ccvars AS
4388
4389 probe_cc objcc "$objcc"
4390 objcflags_filter=$_flags_filter
4391 add_objcflags $_flags $_cflags
4392 set_ccvars OBJC
4393
4394 probe_cc ld "$ld"
4395 ldflags_filter=$_flags_filter
4396 add_ldflags $_flags $_ldflags
4397 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4398 LD_O=${_ld_o-$LD_O}
4399 LD_LIB=${_ld_lib-$LD_LIB}
4400 LD_PATH=${_ld_path-$LD_PATH}
4401
4402 probe_cc hostld "$host_ld"
4403 host_ldflags_filter=$_flags_filter
4404 add_host_ldflags $_flags $_ldflags
4405 HOSTLD_O=${_ld_o-$HOSTLD_O}
4406
4407 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4408     probe_cc depcc "$dep_cc"
4409     CCDEP=${_DEPCMD:-$DEPCMD}
4410     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4411     DEPCCFLAGS=$_flags
4412 fi
4413
4414 if $ar 2>&1 | grep -q Microsoft; then
4415     arflags="-nologo"
4416     ar_o='-out:$@'
4417 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4418     arflags="rq"
4419     ar_o='$@'
4420 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4421     arflags='-Xany -r -c'
4422     ar_o='$@'
4423 elif $ar 2>&1 | grep -q "\[D\] "; then
4424     arflags="rcD"
4425     ar_o='$@'
4426 else
4427     arflags="rc"
4428     ar_o='$@'
4429 fi
4430
4431 add_cflags $extra_cflags
4432 add_cxxflags $extra_cxxflags
4433 add_objcflags $extra_objcflags
4434 add_asflags $extra_cflags
4435
4436 if test -n "$sysroot"; then
4437     case "$cc_type" in
4438         gcc|llvm_gcc|clang)
4439             add_cppflags --sysroot="$sysroot"
4440             add_ldflags --sysroot="$sysroot"
4441         ;;
4442         tms470)
4443             add_cppflags -I"$sysinclude"
4444             add_ldflags  --sysroot="$sysroot"
4445         ;;
4446     esac
4447 fi
4448
4449 if test "$cpu" = host; then
4450     enabled cross_compile &&
4451         die "--cpu=host makes no sense when cross-compiling."
4452
4453     case "$cc_type" in
4454         gcc|llvm_gcc)
4455             check_native(){
4456                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4457                 sed -n "/cc1.*$1=/{
4458                             s/.*$1=\\([^ ]*\\).*/\\1/
4459                             p
4460                             q
4461                         }" $TMPE
4462             }
4463             cpu=$(check_native -march || check_native -mcpu)
4464         ;;
4465         clang)
4466             check_native(){
4467                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4468                 sed -n "/cc1.*-target-cpu /{
4469                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4470                             p
4471                             q
4472                         }" $TMPE
4473             }
4474             cpu=$(check_native -march)
4475         ;;
4476     esac
4477
4478     test "${cpu:-host}" = host &&
4479         die "--cpu=host not supported with compiler $cc"
4480 fi
4481
4482 # Deal with common $arch aliases
4483 case "$arch" in
4484     aarch64|arm64)
4485         arch="aarch64"
4486     ;;
4487     arm*|iPad*|iPhone*)
4488         arch="arm"
4489     ;;
4490     mips*|IP*)
4491         case "$arch" in
4492         *el)
4493             add_cppflags -EL
4494             add_ldflags -EL
4495         ;;
4496         *eb)
4497             add_cppflags -EB
4498             add_ldflags -EB
4499         ;;
4500         esac
4501         arch="mips"
4502     ;;
4503     parisc*|hppa*)
4504         arch="parisc"
4505     ;;
4506     "Power Macintosh"|ppc*|powerpc*)
4507         arch="ppc"
4508     ;;
4509     s390|s390x)
4510         arch="s390"
4511     ;;
4512     sh4|sh)
4513         arch="sh4"
4514     ;;
4515     sun4*|sparc*)
4516         arch="sparc"
4517     ;;
4518     tilegx|tile-gx)
4519         arch="tilegx"
4520     ;;
4521     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4522         arch="x86"
4523     ;;
4524 esac
4525
4526 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4527 enable $arch
4528
4529 # Add processor-specific flags
4530 if enabled aarch64; then
4531
4532     case $cpu in
4533         armv*)
4534             cpuflags="-march=$cpu"
4535         ;;
4536         *)
4537             cpuflags="-mcpu=$cpu"
4538         ;;
4539     esac
4540
4541 elif enabled alpha; then
4542
4543     cpuflags="-mcpu=$cpu"
4544
4545 elif enabled arm; then
4546
4547     check_arm_arch() {
4548         check_cpp_condition stddef.h \
4549             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4550             $cpuflags
4551     }
4552
4553     probe_arm_arch() {
4554         if   check_arm_arch 4;        then echo armv4
4555         elif check_arm_arch 4T;       then echo armv4t
4556         elif check_arm_arch 5;        then echo armv5
4557         elif check_arm_arch 5E;       then echo armv5e
4558         elif check_arm_arch 5T;       then echo armv5t
4559         elif check_arm_arch 5TE;      then echo armv5te
4560         elif check_arm_arch 5TEJ;     then echo armv5te
4561         elif check_arm_arch 6;        then echo armv6
4562         elif check_arm_arch 6J;       then echo armv6j
4563         elif check_arm_arch 6K;       then echo armv6k
4564         elif check_arm_arch 6Z;       then echo armv6z
4565         elif check_arm_arch 6ZK;      then echo armv6zk
4566         elif check_arm_arch 6T2;      then echo armv6t2
4567         elif check_arm_arch 7;        then echo armv7
4568         elif check_arm_arch 7A  7_A;  then echo armv7-a
4569         elif check_arm_arch 7S;       then echo armv7-a
4570         elif check_arm_arch 7R  7_R;  then echo armv7-r
4571         elif check_arm_arch 7M  7_M;  then echo armv7-m
4572         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4573         elif check_arm_arch 8A  8_A;  then echo armv8-a
4574         fi
4575     }
4576
4577     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4578
4579     case $cpu in
4580         armv*)
4581             cpuflags="-march=$cpu"
4582             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4583         ;;
4584         *)
4585             cpuflags="-mcpu=$cpu"
4586             case $cpu in
4587                 cortex-a*)                               subarch=armv7a  ;;
4588                 cortex-r*)                               subarch=armv7r  ;;
4589                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4590                 arm11*)                                  subarch=armv6   ;;
4591                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4592                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4593                 *)                             subarch=$(probe_arm_arch) ;;
4594             esac
4595         ;;
4596     esac
4597
4598     case "$subarch" in
4599         armv5t*)    enable fast_clz                ;;
4600         armv[6-8]*)
4601             enable fast_clz
4602             disabled fast_unaligned || enable fast_unaligned
4603             ;;
4604     esac
4605
4606 elif enabled avr32; then
4607
4608     case $cpu in
4609         ap7[02]0[0-2])
4610             subarch="avr32_ap"
4611             cpuflags="-mpart=$cpu"
4612         ;;
4613         ap)
4614             subarch="avr32_ap"
4615             cpuflags="-march=$cpu"
4616         ;;
4617         uc3[ab]*)
4618             subarch="avr32_uc"
4619             cpuflags="-mcpu=$cpu"
4620         ;;
4621         uc)
4622             subarch="avr32_uc"
4623             cpuflags="-march=$cpu"
4624         ;;
4625     esac
4626
4627 elif enabled bfin; then
4628
4629     cpuflags="-mcpu=$cpu"
4630
4631 elif enabled mips; then
4632
4633     cpuflags="-march=$cpu"
4634
4635     if [ "$cpu" != "generic" ]; then
4636         disable mips32r2
4637         disable mips32r5
4638         disable mips64r2
4639         disable mips32r6
4640         disable mips64r6
4641         disable loongson2
4642         disable loongson3
4643
4644         case $cpu in
4645             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4646                 enable mips32r2
4647                 disable msa
4648             ;;
4649             p5600|i6400|p6600)
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652             ;;
4653             loongson*)
4654                 enable loongson2
4655                 enable loongson3
4656                 enable local_aligned
4657                 enable simd_align_16
4658                 enable fast_64bit
4659                 enable fast_clz
4660                 enable fast_cmov
4661                 enable fast_unaligned
4662                 disable aligned_stack
4663                 disable mipsfpu
4664                 disable mipsdsp
4665                 disable mipsdspr2
4666                 case $cpu in
4667                     loongson3*)
4668                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4669                     ;;
4670                     loongson2e)
4671                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4672                     ;;
4673                     loongson2f)
4674                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4675                     ;;
4676                 esac
4677             ;;
4678             *)
4679                 # Unknown CPU. Disable everything.
4680                 warn "unknown CPU. Disabling all MIPS optimizations."
4681                 disable mipsfpu
4682                 disable mipsdsp
4683                 disable mipsdspr2
4684                 disable msa
4685                 disable mmi
4686             ;;
4687         esac
4688
4689         case $cpu in
4690             24kc)
4691                 disable mipsfpu
4692                 disable mipsdsp
4693                 disable mipsdspr2
4694             ;;
4695             24kf*)
4696                 disable mipsdsp
4697                 disable mipsdspr2
4698             ;;
4699             24kec|34kc|1004kc)
4700                 disable mipsfpu
4701                 disable mipsdspr2
4702             ;;
4703             24kef*|34kf*|1004kf*)
4704                 disable mipsdspr2
4705             ;;
4706             74kc)
4707                 disable mipsfpu
4708             ;;
4709             p5600)
4710                 enable mips32r5
4711                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4712             ;;
4713             i6400)
4714                 enable mips64r6
4715                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4716             ;;
4717             p6600)
4718                 enable mips64r6
4719                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4720             ;;
4721         esac
4722     else
4723         # We do not disable anything. Is up to the user to disable the unwanted features.
4724         warn 'generic cpu selected'
4725     fi
4726
4727 elif enabled ppc; then
4728
4729     disable ldbrx
4730
4731     case $(tolower $cpu) in
4732         601|ppc601|powerpc601)
4733             cpuflags="-mcpu=601"
4734             disable altivec
4735         ;;
4736         603*|ppc603*|powerpc603*)
4737             cpuflags="-mcpu=603"
4738             disable altivec
4739         ;;
4740         604*|ppc604*|powerpc604*)
4741             cpuflags="-mcpu=604"
4742             disable altivec
4743         ;;
4744         g3|75*|ppc75*|powerpc75*)
4745             cpuflags="-mcpu=750"
4746             disable altivec
4747         ;;
4748         g4|745*|ppc745*|powerpc745*)
4749             cpuflags="-mcpu=7450"
4750             disable vsx
4751         ;;
4752         74*|ppc74*|powerpc74*)
4753             cpuflags="-mcpu=7400"
4754             disable vsx
4755         ;;
4756         g5|970|ppc970|powerpc970)
4757             cpuflags="-mcpu=970"
4758             disable vsx
4759         ;;
4760         power[3-6]*)
4761             cpuflags="-mcpu=$cpu"
4762             disable vsx
4763         ;;
4764         power[7-8]*)
4765             cpuflags="-mcpu=$cpu"
4766         ;;
4767         cell)
4768             cpuflags="-mcpu=cell"
4769             enable ldbrx
4770             disable vsx
4771         ;;
4772         e500mc)
4773             cpuflags="-mcpu=e500mc"
4774             disable altivec
4775         ;;
4776         e500v2)
4777             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4778             disable altivec
4779             disable dcbzl
4780         ;;
4781         e500)
4782             cpuflags="-mcpu=8540 -mhard-float"
4783             disable altivec
4784             disable dcbzl
4785         ;;
4786     esac
4787
4788 elif enabled sparc; then
4789
4790     case $cpu in
4791         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4792             cpuflags="-mcpu=$cpu"
4793         ;;
4794         ultrasparc*|niagara[234])
4795             cpuflags="-mcpu=$cpu"
4796         ;;
4797     esac
4798
4799 elif enabled x86; then
4800
4801     case $cpu in
4802         i[345]86|pentium)
4803             cpuflags="-march=$cpu"
4804             disable i686
4805             disable mmx
4806         ;;
4807         # targets that do NOT support nopl and conditional mov (cmov)
4808         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4809             cpuflags="-march=$cpu"
4810             disable i686
4811         ;;
4812         # targets that do support nopl and conditional mov (cmov)
4813         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4814         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4815         |amdfam10|barcelona|b[dt]ver*|znver*)
4816             cpuflags="-march=$cpu"
4817             enable i686
4818             enable fast_cmov
4819         ;;
4820         # targets that do support conditional mov but on which it's slow
4821         pentium4|pentium4m|prescott|nocona)
4822             cpuflags="-march=$cpu"
4823             enable i686
4824             disable fast_cmov
4825         ;;
4826     esac
4827
4828 fi
4829
4830 if [ "$cpu" != generic ]; then
4831     add_cflags  $cpuflags
4832     add_asflags $cpuflags
4833     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4834 fi
4835
4836 # compiler sanity check
4837 check_exec <<EOF
4838 int main(void){ return 0; }
4839 EOF
4840 if test "$?" != 0; then
4841     echo "$cc is unable to create an executable file."
4842     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4843         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4844         echo "Only do this if you know what cross compiling means."
4845     fi
4846     die "C compiler test failed."
4847 fi
4848
4849 add_cppflags -D_ISOC99_SOURCE
4850 add_cxxflags -D__STDC_CONSTANT_MACROS
4851 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4852
4853 # some compilers silently accept -std=c11, so we also need to check that the
4854 # version macro is defined properly
4855 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4856     add_cflags -std=c11 ||
4857     check_cflags -std=c99
4858
4859 check_cppflags -D_FILE_OFFSET_BITS=64
4860 check_cppflags -D_LARGEFILE_SOURCE
4861
4862 add_host_cppflags -D_ISOC99_SOURCE
4863 check_host_cflags -std=c99
4864 check_host_cflags -Wall
4865 check_host_cflags $host_cflags_speed
4866
4867 check_64bit(){
4868     arch32=$1
4869     arch64=$2
4870     expr=$3
4871     check_code cc "" "int test[2*($expr) - 1]" &&
4872         subarch=$arch64 || subarch=$arch32
4873 }
4874
4875 case "$arch" in
4876     aarch64|alpha|ia64)
4877         spic=$shared
4878     ;;
4879     mips)
4880         check_64bit mips mips64 '_MIPS_SIM > 1'
4881         spic=$shared
4882     ;;
4883     parisc)
4884         check_64bit parisc parisc64 'sizeof(void *) > 4'
4885