Merge commit '76481f57b528168b00035aee76f7e0878669011f'
[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 COMPONENT_LIST="
1494     $AVCODEC_COMPONENTS
1495     $AVDEVICE_COMPONENTS
1496     $AVFILTER_COMPONENTS
1497     $AVFORMAT_COMPONENTS
1498 "
1499
1500 EXAMPLE_LIST="
1501     avio_dir_cmd_example
1502     avio_reading_example
1503     decode_audio_example
1504     decode_video_example
1505     demuxing_decoding_example
1506     encode_audio_example
1507     encode_video_example
1508     extract_mvs_example
1509     filter_audio_example
1510     filtering_audio_example
1511     filtering_video_example
1512     http_multiclient_example
1513     hw_decode_example
1514     metadata_example
1515     muxing_example
1516     qsvdec_example
1517     remuxing_example
1518     resampling_audio_example
1519     scaling_video_example
1520     transcode_aac_example
1521     transcoding_example
1522 "
1523
1524 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1525     alsa
1526     appkit
1527     avfoundation
1528     bzlib
1529     coreimage
1530     iconv
1531     libxcb
1532     libxcb_shm
1533     libxcb_shape
1534     libxcb_xfixes
1535     lzma
1536     schannel
1537     sdl2
1538     securetransport
1539     sndio
1540     xlib
1541     zlib
1542 "
1543
1544 EXTERNAL_LIBRARY_GPL_LIST="
1545     avisynth
1546     frei0r
1547     libcdio
1548     librubberband
1549     libvidstab
1550     libx264
1551     libx265
1552     libxavs
1553     libxvid
1554 "
1555
1556 EXTERNAL_LIBRARY_NONFREE_LIST="
1557     decklink
1558     libndi_newtek
1559     libfdk_aac
1560     openssl
1561 "
1562
1563 EXTERNAL_LIBRARY_VERSION3_LIST="
1564     gmp
1565     libopencore_amrnb
1566     libopencore_amrwb
1567     libvmaf
1568     libvo_amrwbenc
1569     rkmpp
1570 "
1571
1572 EXTERNAL_LIBRARY_GPLV3_LIST="
1573     libsmbclient
1574 "
1575
1576 EXTERNAL_LIBRARY_LIST="
1577     $EXTERNAL_LIBRARY_GPL_LIST
1578     $EXTERNAL_LIBRARY_NONFREE_LIST
1579     $EXTERNAL_LIBRARY_VERSION3_LIST
1580     $EXTERNAL_LIBRARY_GPLV3_LIST
1581     chromaprint
1582     gcrypt
1583     gnutls
1584     jni
1585     ladspa
1586     libass
1587     libbluray
1588     libbs2b
1589     libcaca
1590     libcelt
1591     libdc1394
1592     libdrm
1593     libflite
1594     libfontconfig
1595     libfreetype
1596     libfribidi
1597     libgme
1598     libgsm
1599     libiec61883
1600     libilbc
1601     libjack
1602     libkvazaar
1603     libmodplug
1604     libmp3lame
1605     libmysofa
1606     libopencv
1607     libopenh264
1608     libopenjpeg
1609     libopenmpt
1610     libopus
1611     libpulse
1612     librsvg
1613     librtmp
1614     libshine
1615     libsmbclient
1616     libsnappy
1617     libsoxr
1618     libspeex
1619     libssh
1620     libtesseract
1621     libtheora
1622     libtwolame
1623     libv4l2
1624     libvorbis
1625     libvpx
1626     libwavpack
1627     libwebp
1628     libxml2
1629     libzimg
1630     libzmq
1631     libzvbi
1632     mediacodec
1633     openal
1634     opencl
1635     opengl
1636 "
1637
1638 HWACCEL_AUTODETECT_LIBRARY_LIST="
1639     audiotoolbox
1640     crystalhd
1641     cuda
1642     cuvid
1643     d3d11va
1644     dxva2
1645     nvdec
1646     nvenc
1647     vaapi
1648     vdpau
1649     videotoolbox
1650     v4l2_m2m
1651     xvmc
1652 "
1653
1654 # catchall list of things that require external libs to link
1655 EXTRALIBS_LIST="
1656     cpu_init
1657     cws2fws
1658 "
1659
1660 HWACCEL_LIBRARY_NONFREE_LIST="
1661     cuda_sdk
1662     libnpp
1663 "
1664
1665 HWACCEL_LIBRARY_LIST="
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1739     $HWACCEL_LIBRARY_LIST
1740     $HWACCEL_AUTODETECT_LIBRARY_LIST
1741     $FEATURE_LIST
1742     $LICENSE_LIST
1743     $LIBRARY_LIST
1744     $PROGRAM_LIST
1745     $SUBSYSTEM_LIST
1746     autodetect
1747     fontconfig
1748     linux_perf
1749     memory_poisoning
1750     neon_clobber_test
1751     ossfuzz
1752     pic
1753     thumb
1754     valgrind_backtrace
1755     xmm_clobber_test
1756     $COMPONENT_LIST
1757 "
1758
1759 THREADS_LIST="
1760     pthreads
1761     os2threads
1762     w32threads
1763 "
1764
1765 ATOMICS_LIST="
1766     atomics_gcc
1767     atomics_suncc
1768     atomics_win32
1769 "
1770
1771 AUTODETECT_LIBS="
1772     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1773     $HWACCEL_AUTODETECT_LIBRARY_LIST
1774     $THREADS_LIST
1775 "
1776
1777 ARCH_LIST="
1778     aarch64
1779     alpha
1780     arm
1781     avr32
1782     avr32_ap
1783     avr32_uc
1784     bfin
1785     ia64
1786     m68k
1787     mips
1788     mips64
1789     parisc
1790     ppc
1791     ppc64
1792     s390
1793     sh4
1794     sparc
1795     sparc64
1796     tilegx
1797     tilepro
1798     tomi
1799     x86
1800     x86_32
1801     x86_64
1802 "
1803
1804 ARCH_EXT_LIST_ARM="
1805     armv5te
1806     armv6
1807     armv6t2
1808     armv8
1809     neon
1810     vfp
1811     vfpv3
1812     setend
1813 "
1814
1815 ARCH_EXT_LIST_MIPS="
1816     mipsfpu
1817     mips32r2
1818     mips32r5
1819     mips64r2
1820     mips32r6
1821     mips64r6
1822     mipsdsp
1823     mipsdspr2
1824     msa
1825 "
1826
1827 ARCH_EXT_LIST_LOONGSON="
1828     loongson2
1829     loongson3
1830     mmi
1831 "
1832
1833 ARCH_EXT_LIST_X86_SIMD="
1834     aesni
1835     amd3dnow
1836     amd3dnowext
1837     avx
1838     avx2
1839     fma3
1840     fma4
1841     mmx
1842     mmxext
1843     sse
1844     sse2
1845     sse3
1846     sse4
1847     sse42
1848     ssse3
1849     xop
1850 "
1851
1852 ARCH_EXT_LIST_PPC="
1853     altivec
1854     dcbzl
1855     ldbrx
1856     power8
1857     ppc4xx
1858     vsx
1859 "
1860
1861 ARCH_EXT_LIST_X86="
1862     $ARCH_EXT_LIST_X86_SIMD
1863     cpunop
1864     i686
1865 "
1866
1867 ARCH_EXT_LIST="
1868     $ARCH_EXT_LIST_ARM
1869     $ARCH_EXT_LIST_PPC
1870     $ARCH_EXT_LIST_X86
1871     $ARCH_EXT_LIST_MIPS
1872     $ARCH_EXT_LIST_LOONGSON
1873 "
1874
1875 ARCH_FEATURES="
1876     aligned_stack
1877     fast_64bit
1878     fast_clz
1879     fast_cmov
1880     local_aligned
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     arpa_inet_h
1908     asm_types_h
1909     cdio_paranoia_h
1910     cdio_paranoia_paranoia_h
1911     cuda_h
1912     dispatch_dispatch_h
1913     dev_bktr_ioctl_bt848_h
1914     dev_bktr_ioctl_meteor_h
1915     dev_ic_bt8xx_h
1916     dev_video_bktr_ioctl_bt848_h
1917     dev_video_meteor_ioctl_meteor_h
1918     direct_h
1919     dirent_h
1920     dxgidebug_h
1921     dxva_h
1922     ES2_gl_h
1923     io_h
1924     mach_mach_time_h
1925     machine_ioctl_bt848_h
1926     machine_ioctl_meteor_h
1927     malloc_h
1928     opencv2_core_core_c_h
1929     OpenGL_gl3_h
1930     poll_h
1931     stdatomic_h
1932     sys_param_h
1933     sys_resource_h
1934     sys_select_h
1935     sys_soundcard_h
1936     sys_time_h
1937     sys_un_h
1938     sys_videoio_h
1939     termios_h
1940     udplite_h
1941     unistd_h
1942     valgrind_valgrind_h
1943     windows_h
1944     winsock2_h
1945 "
1946
1947 INTRINSICS_LIST="
1948     intrinsics_neon
1949 "
1950
1951 COMPLEX_FUNCS="
1952     cabs
1953     cexp
1954 "
1955
1956 MATH_FUNCS="
1957     atanf
1958     atan2f
1959     cbrt
1960     cbrtf
1961     copysign
1962     cosf
1963     erf
1964     exp2
1965     exp2f
1966     expf
1967     hypot
1968     isfinite
1969     isinf
1970     isnan
1971     ldexpf
1972     llrint
1973     llrintf
1974     log2
1975     log2f
1976     log10f
1977     lrint
1978     lrintf
1979     powf
1980     rint
1981     round
1982     roundf
1983     sinf
1984     trunc
1985     truncf
1986 "
1987
1988 SYSTEM_FUNCS="
1989     access
1990     aligned_malloc
1991     arc4random
1992     clock_gettime
1993     closesocket
1994     CommandLineToArgvW
1995     CryptGenRandom
1996     fcntl
1997     getaddrinfo
1998     gethrtime
1999     getopt
2000     GetProcessAffinityMask
2001     GetProcessMemoryInfo
2002     GetProcessTimes
2003     getrusage
2004     GetSystemTimeAsFileTime
2005     gettimeofday
2006     glob
2007     glXGetProcAddress
2008     gmtime_r
2009     inet_aton
2010     isatty
2011     kbhit
2012     localtime_r
2013     lstat
2014     lzo1x_999_compress
2015     mach_absolute_time
2016     MapViewOfFile
2017     memalign
2018     mkstemp
2019     mmap
2020     mprotect
2021     nanosleep
2022     PeekNamedPipe
2023     posix_memalign
2024     pthread_cancel
2025     sched_getaffinity
2026     SetConsoleTextAttribute
2027     SetConsoleCtrlHandler
2028     setmode
2029     setrlimit
2030     Sleep
2031     strerror_r
2032     sysconf
2033     sysctl
2034     usleep
2035     UTGetOSTypeFromString
2036     VirtualAlloc
2037     wglGetProcAddress
2038 "
2039
2040 TOOLCHAIN_FEATURES="
2041     as_arch_directive
2042     as_fpu_directive
2043     as_func
2044     as_object_arch
2045     asm_mod_q
2046     blocks_extension
2047     ebp_available
2048     ebx_available
2049     gnu_as
2050     gnu_windres
2051     ibm_asm
2052     inline_asm_direct_symbol_refs
2053     inline_asm_labels
2054     inline_asm_nonlocal_labels
2055     pragma_deprecated
2056     rsync_contimeout
2057     symver_asm_label
2058     symver_gnu_asm
2059     vfp_args
2060     xform_asm
2061     xmm_clobbers
2062 "
2063
2064 TYPES_LIST="
2065     CONDITION_VARIABLE_Ptr
2066     kCMVideoCodecType_HEVC
2067     socklen_t
2068     struct_addrinfo
2069     struct_group_source_req
2070     struct_ip_mreq_source
2071     struct_ipv6_mreq
2072     struct_msghdr_msg_flags
2073     struct_pollfd
2074     struct_rusage_ru_maxrss
2075     struct_sctp_event_subscribe
2076     struct_sockaddr_in6
2077     struct_sockaddr_sa_len
2078     struct_sockaddr_storage
2079     struct_stat_st_mtim_tv_nsec
2080     struct_v4l2_frmivalenum_discrete
2081 "
2082
2083 HAVE_LIST="
2084     $ARCH_EXT_LIST
2085     $(add_suffix _external $ARCH_EXT_LIST)
2086     $(add_suffix _inline   $ARCH_EXT_LIST)
2087     $ARCH_FEATURES
2088     $ATOMICS_LIST
2089     $BUILTIN_LIST
2090     $COMPLEX_FUNCS
2091     $HAVE_LIST_CMDLINE
2092     $HAVE_LIST_PUB
2093     $HEADERS_LIST
2094     $INTRINSICS_LIST
2095     $MATH_FUNCS
2096     $SYSTEM_FUNCS
2097     $THREADS_LIST
2098     $TOOLCHAIN_FEATURES
2099     $TYPES_LIST
2100     atomics_native
2101     dos_paths
2102     libc_msvcrt
2103     makeinfo
2104     makeinfo_html
2105     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2106     perl
2107     pod2man
2108     section_data_rel_ro
2109     texi2html
2110     threads
2111     uwp
2112     vaapi_drm
2113     vaapi_x11
2114     vdpau_x11
2115     winrt
2116 "
2117
2118 # options emitted with CONFIG_ prefix but not available on the command line
2119 CONFIG_EXTRA="
2120     aandcttables
2121     ac3dsp
2122     adts_header
2123     audio_frame_queue
2124     audiodsp
2125     blockdsp
2126     bswapdsp
2127     cabac
2128     cbs
2129     cbs_h264
2130     cbs_h265
2131     cbs_mpeg2
2132     dirac_parse
2133     dvprofile
2134     exif
2135     faandct
2136     faanidct
2137     fdctdsp
2138     flacdsp
2139     fmtconvert
2140     frame_thread_encoder
2141     g722dsp
2142     golomb
2143     gplv3
2144     h263dsp
2145     h264chroma
2146     h264dsp
2147     h264parse
2148     h264pred
2149     h264qpel
2150     hevcparse
2151     hpeldsp
2152     huffman
2153     huffyuvdsp
2154     huffyuvencdsp
2155     idctdsp
2156     iirfilter
2157     mdct15
2158     intrax8
2159     iso_media
2160     ividsp
2161     jpegtables
2162     lgplv3
2163     libx262
2164     llauddsp
2165     llviddsp
2166     llvidencdsp
2167     lpc
2168     lzf
2169     me_cmp
2170     mpeg_er
2171     mpegaudio
2172     mpegaudiodsp
2173     mpegaudioheader
2174     mpegvideo
2175     mpegvideoenc
2176     mss34dsp
2177     pixblockdsp
2178     qpeldsp
2179     qsv
2180     qsvdec
2181     qsvenc
2182     qsvvpp
2183     rangecoder
2184     riffdec
2185     riffenc
2186     rtpdec
2187     rtpenc_chain
2188     rv34dsp
2189     sinewin
2190     snappy
2191     srtp
2192     startcode
2193     texturedsp
2194     texturedspenc
2195     tpeldsp
2196     vaapi_1
2197     vaapi_encode
2198     vc1dsp
2199     videodsp
2200     vp3dsp
2201     vp56dsp
2202     vp8dsp
2203     wma_freqs
2204     wmv2dsp
2205 "
2206
2207 CMDLINE_SELECT="
2208     $ARCH_EXT_LIST
2209     $CONFIG_LIST
2210     $HAVE_LIST_CMDLINE
2211     $THREADS_LIST
2212     asm
2213     cross_compile
2214     debug
2215     extra_warnings
2216     logging
2217     lto
2218     optimizations
2219     rpath
2220     stripping
2221 "
2222
2223 PATHS_LIST="
2224     bindir
2225     datadir
2226     docdir
2227     incdir
2228     libdir
2229     mandir
2230     pkgconfigdir
2231     prefix
2232     shlibdir
2233     install_name_dir
2234 "
2235
2236 CMDLINE_SET="
2237     $PATHS_LIST
2238     ar
2239     arch
2240     as
2241     assert_level
2242     build_suffix
2243     cc
2244     objcc
2245     cpu
2246     cross_prefix
2247     custom_allocator
2248     cxx
2249     dep_cc
2250     doxygen
2251     env
2252     extra_version
2253     gas
2254     host_cc
2255     host_cflags
2256     host_extralibs
2257     host_ld
2258     host_ldflags
2259     host_os
2260     ignore_tests
2261     install
2262     ld
2263     ln_s
2264     logfile
2265     malloc_prefix
2266     nm
2267     optflags
2268     nvccflags
2269     pkg_config
2270     pkg_config_flags
2271     progs_suffix
2272     random_seed
2273     ranlib
2274     samples
2275     strip
2276     sws_max_filter_size
2277     sysinclude
2278     sysroot
2279     target_exec
2280     target_os
2281     target_path
2282     target_samples
2283     tempprefix
2284     toolchain
2285     valgrind
2286     x86asmexe
2287 "
2288
2289 CMDLINE_APPEND="
2290     extra_cflags
2291     extra_cxxflags
2292     extra_objcflags
2293     host_cppflags
2294 "
2295
2296 # code dependency declarations
2297
2298 # architecture extensions
2299
2300 armv5te_deps="arm"
2301 armv6_deps="arm"
2302 armv6t2_deps="arm"
2303 armv8_deps="aarch64"
2304 neon_deps_any="aarch64 arm"
2305 intrinsics_neon_deps="neon"
2306 vfp_deps_any="aarch64 arm"
2307 vfpv3_deps="vfp"
2308 setend_deps="arm"
2309
2310 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2311
2312 altivec_deps="ppc"
2313 dcbzl_deps="ppc"
2314 ldbrx_deps="ppc"
2315 ppc4xx_deps="ppc"
2316 vsx_deps="altivec"
2317 power8_deps="vsx"
2318
2319 loongson2_deps="mips"
2320 loongson3_deps="mips"
2321 mips32r2_deps="mips"
2322 mips32r5_deps="mips"
2323 mips32r6_deps="mips"
2324 mips64r2_deps="mips"
2325 mips64r6_deps="mips"
2326 mipsfpu_deps="mips"
2327 mipsdsp_deps="mips"
2328 mipsdspr2_deps="mips"
2329 mmi_deps="mips"
2330 msa_deps="mipsfpu"
2331
2332 cpunop_deps="i686"
2333 x86_64_select="i686"
2334 x86_64_suggest="fast_cmov"
2335
2336 amd3dnow_deps="mmx"
2337 amd3dnowext_deps="amd3dnow"
2338 i686_deps="x86"
2339 mmx_deps="x86"
2340 mmxext_deps="mmx"
2341 sse_deps="mmxext"
2342 sse2_deps="sse"
2343 sse3_deps="sse2"
2344 ssse3_deps="sse3"
2345 sse4_deps="ssse3"
2346 sse42_deps="sse4"
2347 aesni_deps="sse42"
2348 avx_deps="sse42"
2349 xop_deps="avx"
2350 fma3_deps="avx"
2351 fma4_deps="avx"
2352 avx2_deps="avx"
2353
2354 mmx_external_deps="x86asm"
2355 mmx_inline_deps="inline_asm x86"
2356 mmx_suggest="mmx_external mmx_inline"
2357
2358 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2359     eval dep=\$${ext}_deps
2360     eval ${ext}_external_deps='"${dep}_external"'
2361     eval ${ext}_inline_deps='"${dep}_inline"'
2362     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2363 done
2364
2365 aligned_stack_if_any="aarch64 ppc x86"
2366 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2367 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2368 fast_unaligned_if_any="aarch64 ppc x86"
2369 simd_align_16_if_any="altivec neon sse"
2370 simd_align_32_if_any="avx"
2371
2372 # system capabilities
2373 symver_if_any="symver_asm_label symver_gnu_asm"
2374 valgrind_backtrace_conflict="optimizations"
2375 valgrind_backtrace_deps="valgrind_valgrind_h"
2376
2377 # threading support
2378 atomics_gcc_if="sync_val_compare_and_swap"
2379 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2380 atomics_win32_if="MemoryBarrier"
2381 atomics_native_if_any="$ATOMICS_LIST"
2382 w32threads_deps="atomics_native"
2383 threads_if_any="$THREADS_LIST"
2384
2385 # subsystems
2386 cbs_h264_select="cbs golomb"
2387 cbs_h265_select="cbs golomb"
2388 cbs_mpeg2_select="cbs"
2389 dct_select="rdft"
2390 dirac_parse_select="golomb"
2391 error_resilience_select="me_cmp"
2392 faandct_deps="faan"
2393 faandct_select="fdctdsp"
2394 faanidct_deps="faan"
2395 faanidct_select="idctdsp"
2396 h264dsp_select="startcode"
2397 hevcparse_select="golomb"
2398 frame_thread_encoder_deps="encoders threads"
2399 intrax8_select="blockdsp idctdsp"
2400 mdct_select="fft"
2401 mdct15_select="fft"
2402 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2403 mpeg_er_select="error_resilience"
2404 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2405 mpegaudiodsp_select="dct"
2406 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2407 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2408 vc1dsp_select="h264chroma qpeldsp startcode"
2409 rdft_select="fft"
2410
2411 # decoders / encoders
2412 aac_decoder_select="adts_header mdct15 mdct sinewin"
2413 aac_fixed_decoder_select="mdct sinewin"
2414 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2415 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2416 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2417 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2418 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2419 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2420 adpcm_g722_decoder_select="g722dsp"
2421 adpcm_g722_encoder_select="g722dsp"
2422 aic_decoder_select="golomb idctdsp"
2423 alac_encoder_select="lpc"
2424 als_decoder_select="bswapdsp"
2425 amrnb_decoder_select="lsp"
2426 amrwb_decoder_select="lsp"
2427 amv_decoder_select="sp5x_decoder exif"
2428 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2429 ape_decoder_select="bswapdsp llauddsp"
2430 apng_decoder_select="zlib"
2431 apng_encoder_select="llvidencdsp zlib"
2432 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2433 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2434 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2435 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2436 atrac1_decoder_select="mdct sinewin"
2437 atrac3_decoder_select="mdct"
2438 atrac3p_decoder_select="mdct sinewin"
2439 avrn_decoder_select="exif jpegtables"
2440 bink_decoder_select="blockdsp hpeldsp"
2441 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2442 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2443 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2444 clearvideo_decoder_select="idctdsp"
2445 cllc_decoder_select="bswapdsp"
2446 comfortnoise_encoder_select="lpc"
2447 cook_decoder_select="audiodsp mdct sinewin"
2448 cscd_decoder_select="lzo"
2449 cscd_decoder_suggest="zlib"
2450 dca_decoder_select="mdct"
2451 dds_decoder_select="texturedsp"
2452 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2453 dnxhd_decoder_select="blockdsp idctdsp"
2454 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2455 dolby_e_decoder_select="mdct"
2456 dvvideo_decoder_select="dvprofile idctdsp"
2457 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2458 dxa_decoder_select="zlib"
2459 dxv_decoder_select="lzf texturedsp"
2460 eac3_decoder_select="ac3_decoder"
2461 eac3_encoder_select="ac3_encoder"
2462 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2463 eatgq_decoder_select="aandcttables"
2464 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2465 exr_decoder_select="zlib"
2466 ffv1_decoder_select="rangecoder"
2467 ffv1_encoder_select="rangecoder"
2468 ffvhuff_decoder_select="huffyuv_decoder"
2469 ffvhuff_encoder_select="huffyuv_encoder"
2470 fic_decoder_select="golomb"
2471 flac_decoder_select="flacdsp"
2472 flac_encoder_select="bswapdsp flacdsp lpc"
2473 flashsv2_decoder_select="zlib"
2474 flashsv2_encoder_select="zlib"
2475 flashsv_decoder_select="zlib"
2476 flashsv_encoder_select="zlib"
2477 flv_decoder_select="h263_decoder"
2478 flv_encoder_select="h263_encoder"
2479 fourxm_decoder_select="blockdsp bswapdsp"
2480 fraps_decoder_select="bswapdsp huffman"
2481 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2482 g729_decoder_select="audiodsp"
2483 h261_decoder_select="mpegvideo"
2484 h261_encoder_select="aandcttables mpegvideoenc"
2485 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2486 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2487 h263i_decoder_select="h263_decoder"
2488 h263p_decoder_select="h263_decoder"
2489 h263p_encoder_select="h263_encoder"
2490 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2491 h264_decoder_suggest="error_resilience"
2492 hap_decoder_select="snappy texturedsp"
2493 hap_encoder_deps="libsnappy"
2494 hap_encoder_select="texturedspenc"
2495 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2496 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2497 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2498 iac_decoder_select="imc_decoder"
2499 imc_decoder_select="bswapdsp fft mdct sinewin"
2500 indeo3_decoder_select="hpeldsp"
2501 indeo4_decoder_select="ividsp"
2502 indeo5_decoder_select="ividsp"
2503 interplay_video_decoder_select="hpeldsp"
2504 jpegls_decoder_select="mjpeg_decoder"
2505 jv_decoder_select="blockdsp"
2506 lagarith_decoder_select="llviddsp"
2507 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2508 magicyuv_decoder_select="llviddsp"
2509 magicyuv_encoder_select="llvidencdsp"
2510 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2511 metasound_decoder_select="lsp mdct sinewin"
2512 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2513 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2514 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2515 mjpegb_decoder_select="mjpeg_decoder"
2516 mlp_decoder_select="mlp_parser"
2517 mlp_encoder_select="lpc"
2518 motionpixels_decoder_select="bswapdsp"
2519 mp1_decoder_select="mpegaudio"
2520 mp1float_decoder_select="mpegaudio"
2521 mp2_decoder_select="mpegaudio"
2522 mp2float_decoder_select="mpegaudio"
2523 mp3_decoder_select="mpegaudio"
2524 mp3adu_decoder_select="mpegaudio"
2525 mp3adufloat_decoder_select="mpegaudio"
2526 mp3float_decoder_select="mpegaudio"
2527 mp3on4_decoder_select="mpegaudio"
2528 mp3on4float_decoder_select="mpegaudio"
2529 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2530 mpc8_decoder_select="mpegaudiodsp"
2531 mpegvideo_decoder_select="mpegvideo"
2532 mpeg1video_decoder_select="mpegvideo"
2533 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2534 mpeg2video_decoder_select="mpegvideo"
2535 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2536 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2537 mpeg4_encoder_select="h263_encoder"
2538 msa1_decoder_select="mss34dsp"
2539 mscc_decoder_select="zlib"
2540 msmpeg4v1_decoder_select="h263_decoder"
2541 msmpeg4v2_decoder_select="h263_decoder"
2542 msmpeg4v2_encoder_select="h263_encoder"
2543 msmpeg4v3_decoder_select="h263_decoder"
2544 msmpeg4v3_encoder_select="h263_encoder"
2545 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2546 mts2_decoder_select="mss34dsp"
2547 mxpeg_decoder_select="mjpeg_decoder"
2548 nellymoser_decoder_select="mdct sinewin"
2549 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2550 nuv_decoder_select="idctdsp lzo"
2551 on2avc_decoder_select="mdct"
2552 opus_decoder_deps="swresample"
2553 opus_decoder_select="mdct15"
2554 opus_encoder_select="audio_frame_queue mdct15"
2555 png_decoder_select="zlib"
2556 png_encoder_select="llvidencdsp zlib"
2557 prores_decoder_select="blockdsp idctdsp"
2558 prores_encoder_select="fdctdsp"
2559 qcelp_decoder_select="lsp"
2560 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2561 ra_144_decoder_select="audiodsp"
2562 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2563 ralf_decoder_select="golomb"
2564 rawvideo_decoder_select="bswapdsp"
2565 rscc_decoder_select="zlib"
2566 rtjpeg_decoder_select="me_cmp"
2567 rv10_decoder_select="h263_decoder"
2568 rv10_encoder_select="h263_encoder"
2569 rv20_decoder_select="h263_decoder"
2570 rv20_encoder_select="h263_encoder"
2571 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2572 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2573 screenpresso_decoder_select="zlib"
2574 shorten_decoder_select="bswapdsp"
2575 sipr_decoder_select="lsp"
2576 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2577 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2578 sonic_decoder_select="golomb rangecoder"
2579 sonic_encoder_select="golomb rangecoder"
2580 sonic_ls_encoder_select="golomb rangecoder"
2581 sp5x_decoder_select="mjpeg_decoder"
2582 srgc_decoder_select="zlib"
2583 svq1_decoder_select="hpeldsp"
2584 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2585 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2586 svq3_decoder_suggest="zlib"
2587 tak_decoder_select="audiodsp"
2588 tdsc_decoder_select="zlib mjpeg_decoder"
2589 theora_decoder_select="vp3_decoder"
2590 thp_decoder_select="mjpeg_decoder"
2591 tiff_decoder_suggest="zlib lzma"
2592 tiff_encoder_suggest="zlib"
2593 truehd_decoder_select="mlp_parser"
2594 truehd_encoder_select="lpc"
2595 truemotion2_decoder_select="bswapdsp"
2596 truespeech_decoder_select="bswapdsp"
2597 tscc_decoder_select="zlib"
2598 twinvq_decoder_select="mdct lsp sinewin"
2599 txd_decoder_select="texturedsp"
2600 utvideo_decoder_select="bswapdsp llviddsp"
2601 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2602 vble_decoder_select="llviddsp"
2603 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2604 vc1image_decoder_select="vc1_decoder"
2605 vorbis_decoder_select="mdct"
2606 vorbis_encoder_select="mdct"
2607 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2608 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2609 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2610 vp6a_decoder_select="vp6_decoder"
2611 vp6f_decoder_select="vp6_decoder"
2612 vp7_decoder_select="h264pred videodsp vp8dsp"
2613 vp8_decoder_select="h264pred videodsp vp8dsp"
2614 vp9_decoder_select="videodsp vp9_parser"
2615 webp_decoder_select="vp8_decoder exif"
2616 wmalossless_decoder_select="llauddsp"
2617 wmapro_decoder_select="mdct sinewin wma_freqs"
2618 wmav1_decoder_select="mdct sinewin wma_freqs"
2619 wmav1_encoder_select="mdct sinewin wma_freqs"
2620 wmav2_decoder_select="mdct sinewin wma_freqs"
2621 wmav2_encoder_select="mdct sinewin wma_freqs"
2622 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2623 wmv1_decoder_select="h263_decoder"
2624 wmv1_encoder_select="h263_encoder"
2625 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2626 wmv2_encoder_select="h263_encoder wmv2dsp"
2627 wmv3_decoder_select="vc1_decoder"
2628 wmv3image_decoder_select="wmv3_decoder"
2629 xma1_decoder_select="wmapro_decoder"
2630 xma2_decoder_select="wmapro_decoder"
2631 zerocodec_decoder_select="zlib"
2632 zlib_decoder_select="zlib"
2633 zlib_encoder_select="zlib"
2634 zmbv_decoder_select="zlib"
2635 zmbv_encoder_select="zlib"
2636
2637 # hardware accelerators
2638 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2639 cuda_deps_any="libdl LoadLibrary"
2640 cuvid_deps="cuda"
2641 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2642 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2643 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2644 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2645 xvmc_deps="X11_extensions_XvMClib_h"
2646
2647 h263_vaapi_hwaccel_deps="vaapi"
2648 h263_vaapi_hwaccel_select="h263_decoder"
2649 h263_videotoolbox_hwaccel_deps="videotoolbox"
2650 h263_videotoolbox_hwaccel_select="h263_decoder"
2651 h264_cuvid_hwaccel_deps="cuda cuvid"
2652 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2653 h264_d3d11va_hwaccel_deps="d3d11va"
2654 h264_d3d11va_hwaccel_select="h264_decoder"
2655 h264_d3d11va2_hwaccel_deps="d3d11va"
2656 h264_d3d11va2_hwaccel_select="h264_decoder"
2657 h264_dxva2_hwaccel_deps="dxva2"
2658 h264_dxva2_hwaccel_select="h264_decoder"
2659 h264_mediacodec_hwaccel_deps="mediacodec"
2660 h264_mmal_hwaccel_deps="mmal"
2661 h264_nvdec_hwaccel_deps="cuda nvdec"
2662 h264_nvdec_hwaccel_select="h264_decoder"
2663 h264_qsv_hwaccel_deps="libmfx"
2664 h264_vaapi_hwaccel_deps="vaapi"
2665 h264_vaapi_hwaccel_select="h264_decoder"
2666 h264_vdpau_hwaccel_deps="vdpau"
2667 h264_vdpau_hwaccel_select="h264_decoder"
2668 h264_videotoolbox_hwaccel_deps="videotoolbox"
2669 h264_videotoolbox_hwaccel_select="h264_decoder"
2670 hevc_cuvid_hwaccel_deps="cuda cuvid"
2671 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2672 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2673 hevc_d3d11va_hwaccel_select="hevc_decoder"
2674 hevc_mediacodec_hwaccel_deps="mediacodec"
2675 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2676 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2677 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2678 hevc_dxva2_hwaccel_select="hevc_decoder"
2679 hevc_nvdec_hwaccel_deps="cuda nvdec"
2680 hevc_nvdec_hwaccel_select="hevc_decoder"
2681 hevc_qsv_hwaccel_deps="libmfx"
2682 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2683 hevc_vaapi_hwaccel_select="hevc_decoder"
2684 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2685 hevc_vdpau_hwaccel_select="hevc_decoder"
2686 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2687 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2688 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2689 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2690 mpeg_xvmc_hwaccel_deps="xvmc"
2691 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2692 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2693 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2694 mpeg1_vdpau_hwaccel_deps="vdpau"
2695 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2696 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2697 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2698 mpeg1_xvmc_hwaccel_deps="xvmc"
2699 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2700 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2701 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2702 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2703 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2704 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2705 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2706 mpeg2_dxva2_hwaccel_deps="dxva2"
2707 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2708 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2709 mpeg2_mmal_hwaccel_deps="mmal"
2710 mpeg2_qsv_hwaccel_deps="libmfx"
2711 mpeg2_vaapi_hwaccel_deps="vaapi"
2712 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_vdpau_hwaccel_deps="vdpau"
2714 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_xvmc_hwaccel_deps="xvmc"
2718 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2719 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2720 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2721 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2722 mpeg4_mmal_hwaccel_deps="mmal"
2723 mpeg4_vaapi_hwaccel_deps="vaapi"
2724 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2725 mpeg4_vdpau_hwaccel_deps="vdpau"
2726 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2727 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2729 vc1_cuvid_hwaccel_deps="cuda cuvid"
2730 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2731 vc1_d3d11va_hwaccel_deps="d3d11va"
2732 vc1_d3d11va_hwaccel_select="vc1_decoder"
2733 vc1_d3d11va2_hwaccel_deps="d3d11va"
2734 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2735 vc1_dxva2_hwaccel_deps="dxva2"
2736 vc1_dxva2_hwaccel_select="vc1_decoder"
2737 vc1_mmal_hwaccel_deps="mmal"
2738 vc1_qsv_hwaccel_deps="libmfx"
2739 vc1_vaapi_hwaccel_deps="vaapi"
2740 vc1_vaapi_hwaccel_select="vc1_decoder"
2741 vc1_vdpau_hwaccel_deps="vdpau"
2742 vc1_vdpau_hwaccel_select="vc1_decoder"
2743 vp8_cuvid_hwaccel_deps="cuda cuvid"
2744 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2745 vp9_cuvid_hwaccel_deps="cuda cuvid"
2746 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2747 vp8_mediacodec_hwaccel_deps="mediacodec"
2748 vp8_qsv_hwaccel_deps="libmfx"
2749 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2750 vp9_d3d11va_hwaccel_select="vp9_decoder"
2751 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2752 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2753 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2754 vp9_dxva2_hwaccel_select="vp9_decoder"
2755 vp9_mediacodec_hwaccel_deps="mediacodec"
2756 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2757 vp9_vaapi_hwaccel_select="vp9_decoder"
2758 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2759 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2760 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2761 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2762 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2763
2764 # hardware-accelerated codecs
2765 omx_deps="libdl pthreads"
2766 omx_rpi_select="omx"
2767 qsv_deps="libmfx"
2768 qsvdec_select="qsv"
2769 qsvenc_select="qsv"
2770 qsvvpp_select="qsv"
2771 vaapi_encode_deps="vaapi"
2772 v4l2_m2m_deps_any="linux_videodev2_h"
2773
2774 hwupload_cuda_filter_deps="cuda"
2775 scale_npp_filter_deps="cuda libnpp"
2776 scale_cuda_filter_deps="cuda_sdk"
2777 thumbnail_cuda_filter_deps="cuda_sdk"
2778
2779 nvenc_deps="cuda"
2780 nvenc_deps_any="libdl LoadLibrary"
2781 nvenc_encoder_deps="nvenc"
2782
2783 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2784 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2785 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2786 h264_cuvid_decoder_deps="cuda cuvid"
2787 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2788 h264_mediacodec_decoder_deps="mediacodec"
2789 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2790 h264_mmal_decoder_deps="mmal"
2791 h264_nvenc_encoder_deps="nvenc"
2792 h264_omx_encoder_deps="omx"
2793 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2794 h264_qsv_encoder_select="qsvenc"
2795 h264_rkmpp_decoder_deps="rkmpp"
2796 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2797 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2798 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2799 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2800 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2801 hevc_cuvid_decoder_deps="cuda cuvid"
2802 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2803 hevc_mediacodec_decoder_deps="mediacodec"
2804 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2805 hevc_nvenc_encoder_deps="nvenc"
2806 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2807 hevc_qsv_encoder_select="hevcparse qsvenc"
2808 hevc_rkmpp_decoder_deps="rkmpp"
2809 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2811 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2812 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2813 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2814 mjpeg_cuvid_decoder_deps="cuda cuvid"
2815 mjpeg_qsv_encoder_deps="libmfx"
2816 mjpeg_qsv_encoder_select="qsvenc"
2817 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2818 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2819 mpeg1_cuvid_decoder_deps="cuda cuvid"
2820 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2821 mpeg2_crystalhd_decoder_select="crystalhd"
2822 mpeg2_cuvid_decoder_deps="cuda cuvid"
2823 mpeg2_mmal_decoder_deps="mmal"
2824 mpeg2_mediacodec_decoder_deps="mediacodec"
2825 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2826 mpeg2_qsv_encoder_select="qsvenc"
2827 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2828 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2829 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2830 mpeg4_crystalhd_decoder_select="crystalhd"
2831 mpeg4_cuvid_decoder_deps="cuda cuvid"
2832 mpeg4_mediacodec_decoder_deps="mediacodec"
2833 mpeg4_mmal_decoder_deps="mmal"
2834 mpeg4_omx_encoder_deps="omx"
2835 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2836 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2837 msmpeg4_crystalhd_decoder_select="crystalhd"
2838 nvenc_h264_encoder_select="h264_nvenc_encoder"
2839 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2840 vc1_crystalhd_decoder_select="crystalhd"
2841 vc1_cuvid_decoder_deps="cuda cuvid"
2842 vc1_mmal_decoder_deps="mmal"
2843 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2844 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2845 vp8_cuvid_decoder_deps="cuda cuvid"
2846 vp8_mediacodec_decoder_deps="mediacodec"
2847 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2848 vp8_rkmpp_decoder_deps="rkmpp"
2849 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2850 vp8_vaapi_encoder_select="vaapi_encode"
2851 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2853 vp9_cuvid_decoder_deps="cuda cuvid"
2854 vp9_mediacodec_decoder_deps="mediacodec"
2855 vp9_rkmpp_decoder_deps="rkmpp"
2856 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2857 vp9_vaapi_encoder_select="vaapi_encode"
2858 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2859 wmv3_crystalhd_decoder_select="crystalhd"
2860
2861 # parsers
2862 aac_parser_select="adts_header"
2863 h264_parser_select="golomb h264dsp h264parse"
2864 hevc_parser_select="hevcparse"
2865 mpegaudio_parser_select="mpegaudioheader"
2866 mpegvideo_parser_select="mpegvideo"
2867 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2868 vc1_parser_select="vc1dsp"
2869
2870 # bitstream_filters
2871 aac_adtstoasc_bsf_select="adts_header"
2872 h264_metadata_bsf_select="cbs_h264"
2873 h264_redundant_pps_bsf_select="cbs_h264"
2874 hevc_metadata_bsf_select="cbs_h265"
2875 mjpeg2jpeg_bsf_select="jpegtables"
2876 mpeg2_metadata_bsf_select="cbs_mpeg2"
2877 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2878
2879 # external libraries
2880 aac_at_decoder_deps="audiotoolbox"
2881 ac3_at_decoder_deps="audiotoolbox"
2882 ac3_at_decoder_select="ac3_parser"
2883 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2884 alac_at_decoder_deps="audiotoolbox"
2885 amr_nb_at_decoder_deps="audiotoolbox"
2886 avisynth_deps_any="libdl LoadLibrary"
2887 avisynth_demuxer_deps="avisynth"
2888 avisynth_demuxer_select="riffdec"
2889 eac3_at_decoder_deps="audiotoolbox"
2890 eac3_at_decoder_select="ac3_parser"
2891 gsm_ms_at_decoder_deps="audiotoolbox"
2892 ilbc_at_decoder_deps="audiotoolbox"
2893 mp1_at_decoder_deps="audiotoolbox"
2894 mp2_at_decoder_deps="audiotoolbox"
2895 mp3_at_decoder_deps="audiotoolbox"
2896 mp1_at_decoder_select="mpegaudioheader"
2897 mp2_at_decoder_select="mpegaudioheader"
2898 mp3_at_decoder_select="mpegaudioheader"
2899 pcm_alaw_at_decoder_deps="audiotoolbox"
2900 pcm_mulaw_at_decoder_deps="audiotoolbox"
2901 qdmc_at_decoder_deps="audiotoolbox"
2902 qdm2_at_decoder_deps="audiotoolbox"
2903 aac_at_encoder_deps="audiotoolbox"
2904 aac_at_encoder_select="audio_frame_queue"
2905 alac_at_encoder_deps="audiotoolbox"
2906 alac_at_encoder_select="audio_frame_queue"
2907 ilbc_at_encoder_deps="audiotoolbox"
2908 ilbc_at_encoder_select="audio_frame_queue"
2909 pcm_alaw_at_encoder_deps="audiotoolbox"
2910 pcm_alaw_at_encoder_select="audio_frame_queue"
2911 pcm_mulaw_at_encoder_deps="audiotoolbox"
2912 pcm_mulaw_at_encoder_select="audio_frame_queue"
2913 chromaprint_muxer_deps="chromaprint"
2914 h264_videotoolbox_encoder_deps="pthreads"
2915 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2916 libcelt_decoder_deps="libcelt"
2917 libfdk_aac_decoder_deps="libfdk_aac"
2918 libfdk_aac_encoder_deps="libfdk_aac"
2919 libfdk_aac_encoder_select="audio_frame_queue"
2920 libgme_demuxer_deps="libgme"
2921 libgsm_decoder_deps="libgsm"
2922 libgsm_encoder_deps="libgsm"
2923 libgsm_ms_decoder_deps="libgsm"
2924 libgsm_ms_encoder_deps="libgsm"
2925 libilbc_decoder_deps="libilbc"
2926 libilbc_encoder_deps="libilbc"
2927 libkvazaar_encoder_deps="libkvazaar"
2928 libmodplug_demuxer_deps="libmodplug"
2929 libmp3lame_encoder_deps="libmp3lame"
2930 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2931 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2932 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2933 libopencore_amrnb_encoder_select="audio_frame_queue"
2934 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2935 libopenh264_decoder_deps="libopenh264"
2936 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2937 libopenh264_encoder_deps="libopenh264"
2938 libopenjpeg_decoder_deps="libopenjpeg"
2939 libopenjpeg_encoder_deps="libopenjpeg"
2940 libopenmpt_demuxer_deps="libopenmpt"
2941 libopus_decoder_deps="libopus"
2942 libopus_encoder_deps="libopus"
2943 libopus_encoder_select="audio_frame_queue"
2944 librsvg_decoder_deps="librsvg"
2945 libshine_encoder_deps="libshine"
2946 libshine_encoder_select="audio_frame_queue"
2947 libspeex_decoder_deps="libspeex"
2948 libspeex_encoder_deps="libspeex"
2949 libspeex_encoder_select="audio_frame_queue"
2950 libtheora_encoder_deps="libtheora"
2951 libtwolame_encoder_deps="libtwolame"
2952 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2953 libvorbis_decoder_deps="libvorbis"
2954 libvorbis_encoder_deps="libvorbis libvorbisenc"
2955 libvorbis_encoder_select="audio_frame_queue"
2956 libvpx_vp8_decoder_deps="libvpx"
2957 libvpx_vp8_encoder_deps="libvpx"
2958 libvpx_vp9_decoder_deps="libvpx"
2959 libvpx_vp9_encoder_deps="libvpx"
2960 libwavpack_encoder_deps="libwavpack"
2961 libwavpack_encoder_select="audio_frame_queue"
2962 libwebp_encoder_deps="libwebp"
2963 libwebp_anim_encoder_deps="libwebp"
2964 libx262_encoder_deps="libx262"
2965 libx264_encoder_deps="libx264"
2966 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2967 libx264rgb_encoder_select="libx264_encoder"
2968 libx265_encoder_deps="libx265"
2969 libxavs_encoder_deps="libxavs"
2970 libxvid_encoder_deps="libxvid"
2971 libzvbi_teletext_decoder_deps="libzvbi"
2972 videotoolbox_suggest="coreservices"
2973 videotoolbox_deps="corefoundation coremedia corevideo"
2974 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2975
2976 # demuxers / muxers
2977 ac3_demuxer_select="ac3_parser"
2978 aiff_muxer_select="iso_media"
2979 asf_demuxer_select="riffdec"
2980 asf_o_demuxer_select="riffdec"
2981 asf_muxer_select="riffenc"
2982 asf_stream_muxer_select="asf_muxer"
2983 avi_demuxer_select="iso_media riffdec exif"
2984 avi_muxer_select="riffenc"
2985 caf_demuxer_select="iso_media riffdec"
2986 caf_muxer_select="iso_media"
2987 dash_muxer_select="mp4_muxer"
2988 dash_demuxer_deps="libxml2"
2989 dirac_demuxer_select="dirac_parser"
2990 dts_demuxer_select="dca_parser"
2991 dtshd_demuxer_select="dca_parser"
2992 dv_demuxer_select="dvprofile"
2993 dv_muxer_select="dvprofile"
2994 dxa_demuxer_select="riffdec"
2995 eac3_demuxer_select="ac3_parser"
2996 f4v_muxer_select="mov_muxer"
2997 fifo_muxer_deps="threads"
2998 flac_demuxer_select="flac_parser"
2999 hds_muxer_select="flv_muxer"
3000 hls_muxer_select="mpegts_muxer"
3001 hls_muxer_suggest="gcrypt openssl"
3002 image2_alias_pix_demuxer_select="image2_demuxer"
3003 image2_brender_pix_demuxer_select="image2_demuxer"
3004 ipod_muxer_select="mov_muxer"
3005 ismv_muxer_select="mov_muxer"
3006 matroska_audio_muxer_select="matroska_muxer"
3007 matroska_demuxer_select="iso_media riffdec"
3008 matroska_demuxer_suggest="bzlib lzo zlib"
3009 matroska_muxer_select="iso_media riffenc"
3010 mmf_muxer_select="riffenc"
3011 mov_demuxer_select="iso_media riffdec"
3012 mov_demuxer_suggest="zlib"
3013 mov_muxer_select="iso_media riffenc rtpenc_chain"
3014 mp3_demuxer_select="mpegaudio_parser"
3015 mp3_muxer_select="mpegaudioheader"
3016 mp4_muxer_select="mov_muxer"
3017 mpegts_demuxer_select="iso_media"
3018 mpegts_muxer_select="adts_muxer latm_muxer"
3019 mpegtsraw_demuxer_select="mpegts_demuxer"
3020 mxf_d10_muxer_select="mxf_muxer"
3021 mxf_opatom_muxer_select="mxf_muxer"
3022 nut_muxer_select="riffenc"
3023 nuv_demuxer_select="riffdec"
3024 oga_muxer_select="ogg_muxer"
3025 ogg_demuxer_select="dirac_parse"
3026 ogv_muxer_select="ogg_muxer"
3027 opus_muxer_select="ogg_muxer"
3028 psp_muxer_select="mov_muxer"
3029 rtp_demuxer_select="sdp_demuxer"
3030 rtp_muxer_select="golomb"
3031 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3032 rtsp_demuxer_select="http_protocol rtpdec"
3033 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3034 sap_demuxer_select="sdp_demuxer"
3035 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3036 sdp_demuxer_select="rtpdec"
3037 smoothstreaming_muxer_select="ismv_muxer"
3038 spdif_demuxer_select="adts_header"
3039 spdif_muxer_select="adts_header"
3040 spx_muxer_select="ogg_muxer"
3041 swf_demuxer_suggest="zlib"
3042 tak_demuxer_select="tak_parser"
3043 tg2_muxer_select="mov_muxer"
3044 tgp_muxer_select="mov_muxer"
3045 vobsub_demuxer_select="mpegps_demuxer"
3046 w64_demuxer_select="wav_demuxer"
3047 w64_muxer_select="wav_muxer"
3048 wav_demuxer_select="riffdec"
3049 wav_muxer_select="riffenc"
3050 webm_muxer_select="iso_media riffenc"
3051 webm_dash_manifest_demuxer_select="matroska_demuxer"
3052 wtv_demuxer_select="mpegts_demuxer riffdec"
3053 wtv_muxer_select="mpegts_muxer riffenc"
3054 xmv_demuxer_select="riffdec"
3055 xwma_demuxer_select="riffdec"
3056
3057 # indevs / outdevs
3058 alsa_indev_deps="alsa"
3059 alsa_outdev_deps="alsa"
3060 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3061 avfoundation_indev_suggest="coregraphics applicationservices"
3062 avfoundation_indev_extralibs="-framework Foundation"
3063 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3064 caca_outdev_deps="libcaca"
3065 decklink_deps_any="libdl LoadLibrary"
3066 decklink_indev_deps="decklink threads"
3067 decklink_indev_extralibs="-lstdc++"
3068 decklink_outdev_deps="decklink threads"
3069 decklink_outdev_extralibs="-lstdc++"
3070 libndi_newtek_indev_deps="libndi_newtek"
3071 libndi_newtek_indev_extralibs="-lndi"
3072 libndi_newtek_outdev_deps="libndi_newtek"
3073 libndi_newtek_outdev_extralibs="-lndi"
3074 dshow_indev_deps="IBaseFilter"
3075 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3076 fbdev_indev_deps="linux_fb_h"
3077 fbdev_outdev_deps="linux_fb_h"
3078 gdigrab_indev_deps="CreateDIBSection"
3079 gdigrab_indev_extralibs="-lgdi32"
3080 gdigrab_indev_select="bmp_decoder"
3081 iec61883_indev_deps="libiec61883"
3082 jack_indev_deps="libjack"
3083 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3084 kmsgrab_indev_deps="libdrm"
3085 lavfi_indev_deps="avfilter"
3086 libcdio_indev_deps="libcdio"
3087 libdc1394_indev_deps="libdc1394"
3088 openal_indev_deps="openal"
3089 opengl_outdev_deps="opengl"
3090 oss_indev_deps_any="sys_soundcard_h"
3091 oss_outdev_deps_any="sys_soundcard_h"
3092 pulse_indev_deps="libpulse"
3093 pulse_outdev_deps="libpulse"
3094 sdl2_outdev_deps="sdl2"
3095 sndio_indev_deps="sndio"
3096 sndio_outdev_deps="sndio"
3097 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3098 v4l2_indev_suggest="libv4l2"
3099 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3100 v4l2_outdev_suggest="libv4l2"
3101 vfwcap_indev_deps="vfw32 vfwcap_defines"
3102 xcbgrab_indev_deps="libxcb"
3103 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3104 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3105 xv_outdev_extralibs="-lXv -lX11 -lXext"
3106
3107 # protocols
3108 async_protocol_deps="threads"
3109 bluray_protocol_deps="libbluray"
3110 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3111 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3112 ffrtmpcrypt_protocol_select="tcp_protocol"
3113 ffrtmphttp_protocol_conflict="librtmp_protocol"
3114 ffrtmphttp_protocol_select="http_protocol"
3115 ftp_protocol_select="tcp_protocol"
3116 gopher_protocol_select="network"
3117 http_protocol_select="tcp_protocol"
3118 http_protocol_suggest="zlib"
3119 httpproxy_protocol_select="tcp_protocol"
3120 httpproxy_protocol_suggest="zlib"
3121 https_protocol_select="tls_protocol"
3122 https_protocol_suggest="zlib"
3123 icecast_protocol_select="http_protocol"
3124 librtmp_protocol_deps="librtmp"
3125 librtmpe_protocol_deps="librtmp"
3126 librtmps_protocol_deps="librtmp"
3127 librtmpt_protocol_deps="librtmp"
3128 librtmpte_protocol_deps="librtmp"
3129 libsmbclient_protocol_deps="libsmbclient gplv3"
3130 libssh_protocol_deps="libssh"
3131 mmsh_protocol_select="http_protocol"
3132 mmst_protocol_select="network"
3133 rtmp_protocol_conflict="librtmp_protocol"
3134 rtmp_protocol_select="tcp_protocol"
3135 rtmp_protocol_suggest="zlib"
3136 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3137 rtmpe_protocol_suggest="zlib"
3138 rtmps_protocol_conflict="librtmp_protocol"
3139 rtmps_protocol_select="tls_protocol"
3140 rtmps_protocol_suggest="zlib"
3141 rtmpt_protocol_select="ffrtmphttp_protocol"
3142 rtmpt_protocol_suggest="zlib"
3143 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3144 rtmpte_protocol_suggest="zlib"
3145 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3146 rtmpts_protocol_suggest="zlib"
3147 rtp_protocol_select="udp_protocol"
3148 schannel_conflict="openssl gnutls"
3149 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3150 sctp_protocol_select="network"
3151 securetransport_conflict="openssl gnutls"
3152 srtp_protocol_select="rtp_protocol srtp"
3153 tcp_protocol_select="network"
3154 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3155 tls_protocol_select="tcp_protocol"
3156 udp_protocol_select="network"
3157 udplite_protocol_select="network"
3158 unix_protocol_deps="sys_un_h"
3159 unix_protocol_select="network"
3160
3161 # filters
3162 afftfilt_filter_deps="avcodec"
3163 afftfilt_filter_select="fft"
3164 afir_filter_deps="avcodec"
3165 afir_filter_select="fft"
3166 amovie_filter_deps="avcodec avformat"
3167 aresample_filter_deps="swresample"
3168 ass_filter_deps="libass"
3169 atempo_filter_deps="avcodec"
3170 atempo_filter_select="rdft"
3171 azmq_filter_deps="libzmq"
3172 blackframe_filter_deps="gpl"
3173 boxblur_filter_deps="gpl"
3174 bs2b_filter_deps="libbs2b"
3175 colormatrix_filter_deps="gpl"
3176 coreimage_filter_deps="coreimage appkit"
3177 coreimage_filter_extralibs="-framework OpenGL"
3178 coreimagesrc_filter_deps="coreimage appkit"
3179 coreimagesrc_filter_extralibs="-framework OpenGL"
3180 cover_rect_filter_deps="avcodec avformat gpl"
3181 cropdetect_filter_deps="gpl"
3182 deinterlace_qsv_filter_deps="libmfx"
3183 deinterlace_vaapi_filter_deps="vaapi"
3184 delogo_filter_deps="gpl"
3185 deshake_filter_select="pixelutils"
3186 deshake_filter_suggest="opencl"
3187 drawtext_filter_deps="libfreetype"
3188 drawtext_filter_suggest="libfontconfig libfribidi"
3189 elbg_filter_deps="avcodec"
3190 eq_filter_deps="gpl"
3191 fftfilt_filter_deps="avcodec"
3192 fftfilt_filter_select="rdft"
3193 find_rect_filter_deps="avcodec avformat gpl"
3194 firequalizer_filter_deps="avcodec"
3195 firequalizer_filter_select="rdft"
3196 flite_filter_deps="libflite"
3197 framerate_filter_select="pixelutils"
3198 frei0r_filter_deps="frei0r libdl"
3199 frei0r_src_filter_deps="frei0r libdl"
3200 fspp_filter_deps="gpl"
3201 geq_filter_deps="gpl"
3202 histeq_filter_deps="gpl"
3203 hqdn3d_filter_deps="gpl"
3204 interlace_filter_deps="gpl"
3205 kerndeint_filter_deps="gpl"
3206 ladspa_filter_deps="ladspa libdl"
3207 mcdeint_filter_deps="avcodec gpl"
3208 movie_filter_deps="avcodec avformat"
3209 mpdecimate_filter_deps="gpl"
3210 mpdecimate_filter_select="pixelutils"
3211 mptestsrc_filter_deps="gpl"
3212 negate_filter_deps="lut_filter"
3213 nnedi_filter_deps="gpl"
3214 ocr_filter_deps="libtesseract"
3215 ocv_filter_deps="libopencv"
3216 overlay_qsv_filter_deps="libmfx"
3217 overlay_qsv_filter_select="qsvvpp"
3218 owdenoise_filter_deps="gpl"
3219 pan_filter_deps="swresample"
3220 perspective_filter_deps="gpl"
3221 phase_filter_deps="gpl"
3222 pp7_filter_deps="gpl"
3223 pp_filter_deps="gpl postproc"
3224 pullup_filter_deps="gpl"
3225 removelogo_filter_deps="avcodec avformat swscale"
3226 repeatfields_filter_deps="gpl"
3227 resample_filter_deps="avresample"
3228 rubberband_filter_deps="librubberband"
3229 sab_filter_deps="gpl swscale"
3230 scale2ref_filter_deps="swscale"
3231 scale_filter_deps="swscale"
3232 scale_qsv_filter_deps="libmfx"
3233 select_filter_select="pixelutils"
3234 showcqt_filter_deps="avcodec avformat swscale"
3235 showcqt_filter_suggest="libfontconfig libfreetype"
3236 showcqt_filter_select="fft"
3237 showfreqs_filter_deps="avcodec"
3238 showfreqs_filter_select="fft"
3239 showspectrum_filter_deps="avcodec"
3240 showspectrum_filter_select="fft"
3241 showspectrumpic_filter_deps="avcodec"
3242 showspectrumpic_filter_select="fft"
3243 signature_filter_deps="gpl avcodec avformat"
3244 smartblur_filter_deps="gpl swscale"
3245 sofalizer_filter_deps="libmysofa avcodec"
3246 sofalizer_filter_select="fft"
3247 spectrumsynth_filter_deps="avcodec"
3248 spectrumsynth_filter_select="fft"
3249 spp_filter_deps="gpl avcodec"
3250 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3251 stereo3d_filter_deps="gpl"
3252 subtitles_filter_deps="avformat avcodec libass"
3253 super2xsai_filter_deps="gpl"
3254 pixfmts_super2xsai_test_deps="super2xsai_filter"
3255 tinterlace_filter_deps="gpl"
3256 tinterlace_merge_test_deps="tinterlace_filter"
3257 tinterlace_pad_test_deps="tinterlace_filter"
3258 tonemap_filter_deps="const_nan"
3259 uspp_filter_deps="gpl avcodec"
3260 unsharp_filter_suggest="opencl"
3261 vaguedenoiser_filter_deps="gpl"
3262 vidstabdetect_filter_deps="libvidstab"
3263 vidstabtransform_filter_deps="libvidstab"
3264 libvmaf_filter_deps="libvmaf"
3265 zmq_filter_deps="libzmq"
3266 zoompan_filter_deps="swscale"
3267 zscale_filter_deps="libzimg const_nan"
3268 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3269 vpp_qsv_filter_deps="libmfx"
3270 vpp_qsv_filter_select="qsvvpp"
3271
3272 # examples
3273 avio_dir_cmd_deps="avformat avutil"
3274 avio_reading_deps="avformat avcodec avutil"
3275 decode_audio_example_deps="avcodec avutil"
3276 decode_video_example_deps="avcodec avutil"
3277 demuxing_decoding_example_deps="avcodec avformat avutil"
3278 encode_audio_example_deps="avcodec avutil"
3279 encode_video_example_deps="avcodec avutil"
3280 extract_mvs_example_deps="avcodec avformat avutil"
3281 filter_audio_example_deps="avfilter avutil"
3282 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3283 filtering_video_example_deps="avfilter avcodec avformat avutil"
3284 http_multiclient_example_deps="avformat avutil fork"
3285 hw_decode_example_deps="avcodec avformat avutil"
3286 metadata_example_deps="avformat avutil"
3287 muxing_example_deps="avcodec avformat avutil swscale"
3288 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3289 remuxing_example_deps="avcodec avformat avutil"
3290 resampling_audio_example_deps="avutil swresample"
3291 scaling_video_example_deps="avutil swscale"
3292 transcode_aac_example_deps="avcodec avformat swresample"
3293 transcoding_example_deps="avfilter avcodec avformat avutil"
3294
3295 # EXTRALIBS_LIST
3296 cpu_init_extralibs="pthreads_extralibs"
3297 cws2fws_extralibs="zlib_extralibs"
3298
3299 # libraries, in linking order
3300 avcodec_deps="avutil"
3301 avcodec_suggest="libm"
3302 avcodec_select="null_bsf"
3303 avdevice_deps="avformat avcodec avutil"
3304 avdevice_suggest="libm"
3305 avfilter_deps="avutil"
3306 avfilter_suggest="libm"
3307 avformat_deps="avcodec avutil"
3308 avformat_suggest="libm network zlib"
3309 avresample_deps="avutil"
3310 avresample_suggest="libm"
3311 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3312 postproc_deps="avutil gpl"
3313 postproc_suggest="libm"
3314 swresample_deps="avutil"
3315 swresample_suggest="libm libsoxr"
3316 swscale_deps="avutil"
3317 swscale_suggest="libm"
3318
3319 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3320 avfilter_extralibs="pthreads_extralibs"
3321 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3322
3323 # programs
3324 ffmpeg_deps="avcodec avfilter avformat swresample"
3325 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3326                null_filter
3327                trim_filter"
3328 ffmpeg_suggest="ole32 psapi shell32"
3329 ffplay_deps="avcodec avformat swscale swresample sdl2"
3330 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3331 ffplay_suggest="shell32"
3332 ffprobe_deps="avcodec avformat"
3333 ffprobe_suggest="shell32"
3334 ffserver_deps="avformat fork sarestart"
3335 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3336
3337 # documentation
3338 podpages_deps="perl"
3339 manpages_deps="perl pod2man"
3340 htmlpages_deps="perl"
3341 htmlpages_deps_any="makeinfo_html texi2html"
3342 txtpages_deps="perl makeinfo"
3343 doc_deps_any="manpages htmlpages podpages txtpages"
3344
3345 # default parameters
3346
3347 logfile="ffbuild/config.log"
3348
3349 # installation paths
3350 prefix_default="/usr/local"
3351 bindir_default='${prefix}/bin'
3352 datadir_default='${prefix}/share/ffmpeg'
3353 docdir_default='${prefix}/share/doc/ffmpeg'
3354 incdir_default='${prefix}/include'
3355 libdir_default='${prefix}/lib'
3356 mandir_default='${prefix}/share/man'
3357
3358 # toolchain
3359 ar_default="ar"
3360 cc_default="gcc"
3361 cxx_default="g++"
3362 host_cc_default="gcc"
3363 doxygen_default="doxygen"
3364 install="install"
3365 ln_s_default="ln -s -f"
3366 nm_default="nm -g"
3367 pkg_config_default=pkg-config
3368 ranlib_default="ranlib"
3369 strip_default="strip"
3370 version_script='--version-script'
3371 x86asmexe_default="nasm"
3372 windres_default="windres"
3373 nvcc_default="nvcc"
3374 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3375 striptype="direct"
3376
3377 # OS
3378 target_os_default=$(tolower $(uname -s))
3379 host_os=$target_os_default
3380
3381 # machine
3382 if test "$target_os_default" = aix; then
3383     arch_default=$(uname -p)
3384     strip_default="strip -X32_64"
3385 else
3386     arch_default=$(uname -m)
3387 fi
3388 cpu="generic"
3389 intrinsics="none"
3390
3391 # configurable options
3392 enable $PROGRAM_LIST
3393 enable $DOCUMENT_LIST
3394 enable $EXAMPLE_LIST
3395 enable $(filter_out avresample $LIBRARY_LIST)
3396 enable stripping
3397
3398 enable asm
3399 enable debug
3400 enable doc
3401 enable faan faandct faanidct
3402 enable optimizations
3403 enable runtime_cpudetect
3404 enable safe_bitstream_reader
3405 enable static
3406 enable swscale_alpha
3407 enable valgrind_backtrace
3408
3409 sws_max_filter_size_default=256
3410 set_default sws_max_filter_size
3411
3412 # internal components are enabled by default
3413 enable $EXTRALIBS_LIST
3414
3415 # Avoid external, non-system, libraries getting enabled by dependency resolution
3416 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3417
3418 # build settings
3419 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3420 LIBPREF="lib"
3421 LIBSUF=".a"
3422 FULLNAME='$(NAME)$(BUILDSUF)'
3423 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3424 SLIBPREF="lib"
3425 SLIBSUF=".so"
3426 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3427 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3428 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3429 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3430 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3431 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3432 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3433
3434 asflags_filter=echo
3435 cflags_filter=echo
3436 ldflags_filter=echo
3437
3438 AS_C='-c'
3439 AS_O='-o $@'
3440 CC_C='-c'
3441 CC_E='-E -o $@'
3442 CC_O='-o $@'
3443 CXX_C='-c'
3444 CXX_O='-o $@'
3445 OBJCC_C='-c'
3446 OBJCC_E='-E -o $@'
3447 OBJCC_O='-o $@'
3448 X86ASM_O='-o $@'
3449 LD_O='-o $@'
3450 LD_LIB='-l%'
3451 LD_PATH='-L'
3452 HOSTCC_C='-c'
3453 HOSTCC_E='-E -o $@'
3454 HOSTCC_O='-o $@'
3455 HOSTLD_O='-o $@'
3456 NVCC_C='-c'
3457 NVCC_O='-o $@'
3458
3459 host_extralibs='-lm'
3460 host_cflags_filter=echo
3461 host_ldflags_filter=echo
3462
3463 target_path='$(CURDIR)'
3464
3465 # since the object filename is not given with the -MM flag, the compiler
3466 # is only able to print the basename, and we must add the path ourselves
3467 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3468 DEPFLAGS='-MM'
3469
3470 mkdir -p ffbuild
3471
3472 # find source path
3473 if test -f configure; then
3474     source_path=.
3475 else
3476     source_path=$(cd $(dirname "$0"); pwd)
3477     case "$source_path" in
3478         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3479     esac
3480     test -e "$source_path/config.h" &&
3481         die "Out of tree builds are impossible with config.h in source dir."
3482 fi
3483
3484 for v in "$@"; do
3485     r=${v#*=}
3486     l=${v%"$r"}
3487     r=$(sh_quote "$r")
3488     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3489 done
3490
3491 find_things(){
3492     thing=$1
3493     pattern=$2
3494     file=$source_path/$3
3495     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3496 }
3497
3498 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3499 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3500 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3501 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3502 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3503 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3504 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3505 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3506 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3507
3508 find_things_extern(){
3509     thing=$1
3510     pattern=$2
3511     file=$source_path/$3
3512     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3513 }
3514
3515 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3516 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3517
3518 AVCODEC_COMPONENTS_LIST="
3519     $BSF_LIST
3520     $DECODER_LIST
3521     $ENCODER_LIST
3522     $HWACCEL_LIST
3523     $PARSER_LIST
3524 "
3525
3526 AVDEVICE_COMPONENTS_LIST="
3527     $INDEV_LIST
3528     $OUTDEV_LIST
3529 "
3530
3531 AVFILTER_COMPONENTS_LIST="
3532     $FILTER_LIST
3533 "
3534
3535 AVFORMAT_COMPONENTS_LIST="
3536     $DEMUXER_LIST
3537     $MUXER_LIST
3538     $PROTOCOL_LIST
3539 "
3540
3541 ALL_COMPONENTS="
3542     $AVCODEC_COMPONENTS_LIST
3543     $AVDEVICE_COMPONENTS_LIST
3544     $AVFILTER_COMPONENTS_LIST
3545     $AVFORMAT_COMPONENTS_LIST
3546 "
3547
3548 for n in $COMPONENT_LIST; do
3549     v=$(toupper ${n%s})_LIST
3550     eval enable \$$v
3551     eval ${n}_if_any="\$$v"
3552 done
3553
3554 enable $ARCH_EXT_LIST
3555
3556 die_unknown(){
3557     echo "Unknown option \"$1\"."
3558     echo "See $0 --help for available options."
3559     exit 1
3560 }
3561
3562 print_in_columns() {
3563     cols=$(expr $ncols / 24)
3564     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3565 }
3566
3567 show_list() {
3568     suffix=_$1
3569     shift
3570     echo $* | sed s/$suffix//g | print_in_columns
3571     exit 0
3572 }
3573
3574 rand_list(){
3575     IFS=', '
3576     set -- $*
3577     unset IFS
3578     for thing; do
3579         comp=${thing%:*}
3580         prob=${thing#$comp}
3581         prob=${prob#:}
3582         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3583         echo "prob ${prob:-0.5}"
3584         printf '%s\n' $comp
3585     done
3586 }
3587
3588 do_random(){
3589     action=$1
3590     shift
3591     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3592     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3593 }
3594
3595 for opt do
3596     optval="${opt#*=}"
3597     case "$opt" in
3598         --extra-ldflags=*)
3599             add_ldflags $optval
3600         ;;
3601         --extra-ldexeflags=*)
3602             add_ldexeflags $optval
3603         ;;
3604         --extra-ldsoflags=*)
3605             add_ldsoflags $optval
3606         ;;
3607         --extra-ldlibflags=*)
3608             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3609                  "removed in the future. Use --extra-ldsoflags instead."
3610             add_ldsoflags $optval
3611         ;;
3612         --extra-libs=*)
3613             add_extralibs $optval
3614         ;;
3615         --disable-devices)
3616             disable $INDEV_LIST $OUTDEV_LIST
3617         ;;
3618         --enable-debug=*)
3619             debuglevel="$optval"
3620         ;;
3621         --disable-programs)
3622             disable $PROGRAM_LIST
3623         ;;
3624         --disable-everything)
3625             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3626         ;;
3627         --disable-all)
3628             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3629             disable $LIBRARY_LIST $PROGRAM_LIST doc
3630             enable avutil
3631         ;;
3632         --enable-random|--disable-random)
3633             action=${opt%%-random}
3634             do_random ${action#--} $COMPONENT_LIST
3635         ;;
3636         --enable-random=*|--disable-random=*)
3637             action=${opt%%-random=*}
3638             do_random ${action#--} $optval
3639         ;;
3640         --enable-sdl)
3641             enable sdl2
3642         ;;
3643         --enable-*=*|--disable-*=*)
3644             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3645             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3646             eval list=\$$(toupper $thing)_LIST
3647             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3648             list=$(filter "$name" $list)
3649             [ "$list" = "" ] && warn "Option $opt did not match anything"
3650             $action $list
3651         ;;
3652         --enable-yasm|--disable-yasm)
3653             warn "The ${opt} option is only provided for compatibility and will be\n"\
3654                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3655             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3656         ;;
3657         --yasmexe=*)
3658             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3659                  "removed in the future. Use --x86asmexe instead."
3660             x86asmexe="$optval"
3661         ;;
3662         --enable-?*|--disable-?*)
3663             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3664             if is_in $option $COMPONENT_LIST; then
3665                 test $action = disable && action=unset
3666                 eval $action \$$(toupper ${option%s})_LIST
3667             elif is_in $option $CMDLINE_SELECT; then
3668                 $action $option
3669             else
3670                 die_unknown $opt
3671             fi
3672         ;;
3673         --list-*)
3674             NAME="${opt#--list-}"
3675             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3676             NAME=${NAME%s}
3677             eval show_list $NAME \$$(toupper $NAME)_LIST
3678         ;;
3679         --help|-h) show_help
3680         ;;
3681         --quiet|-q) quiet=yes
3682         ;;
3683         --fatal-warnings) enable fatal_warnings
3684         ;;
3685         --libfuzzer=*)
3686             libfuzzer_path="$optval"
3687         ;;
3688         *)
3689             optname="${opt%%=*}"
3690             optname="${optname#--}"
3691             optname=$(echo "$optname" | sed 's/-/_/g')
3692             if is_in $optname $CMDLINE_SET; then
3693                 eval $optname='$optval'
3694             elif is_in $optname $CMDLINE_APPEND; then
3695                 append $optname "$optval"
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700     esac
3701 done
3702
3703 for e in $env; do
3704     eval "export $e"
3705 done
3706
3707 if disabled autodetect; then
3708
3709     # Unless iconv is explicitely disabled by the user, we still want to probe
3710     # for the iconv from the libc.
3711     disabled iconv || enable libc_iconv
3712
3713     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3714     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3715 fi
3716 # Mark specifically enabled, but normally autodetected libraries as requested.
3717 for lib in $AUTODETECT_LIBS; do
3718     enabled $lib && request $lib
3719 done
3720 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3721 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3722 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3723
3724 disabled logging && logfile=/dev/null
3725
3726 die_license_disabled() {
3727     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3728 }
3729
3730 die_license_disabled_gpl() {
3731     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3732 }
3733
3734 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3735 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3736
3737 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3738 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3739
3740 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3741
3742 enabled_all gnutls openssl &&
3743     die "GnuTLS and OpenSSL must not be enabled at the same time."
3744
3745 # Disable all the library-specific components if the library itself
3746 # is disabled, see AVCODEC_LIST and following _LIST variables.
3747
3748 disable_components(){
3749     disabled ${1} && disable $(
3750         eval components="\$$(toupper ${1})_COMPONENTS"
3751         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3752     )
3753 }
3754
3755 map 'disable_components $v' $LIBRARY_LIST
3756
3757 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3758 set >> $logfile
3759
3760 test -n "$valgrind" && toolchain="valgrind-memcheck"
3761
3762 enabled ossfuzz && {
3763     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3764     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3765 }
3766
3767 case "$toolchain" in
3768     *-asan)
3769         cc_default="${toolchain%-asan}"
3770         add_cflags  -fsanitize=address
3771         add_ldflags -fsanitize=address
3772     ;;
3773     *-msan)
3774         cc_default="${toolchain%-msan}"
3775         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3776         add_ldflags -fsanitize=memory
3777     ;;
3778     *-tsan)
3779         cc_default="${toolchain%-tsan}"
3780         add_cflags  -fsanitize=thread -fPIE
3781         add_ldflags -fsanitize=thread -pie
3782         case "$toolchain" in
3783             gcc-tsan)
3784                 add_cflags  -fPIC
3785                 add_ldflags -fPIC
3786                 ;;
3787         esac
3788     ;;
3789     *-usan)
3790         cc_default="${toolchain%-usan}"
3791         add_cflags  -fsanitize=undefined
3792         add_ldflags -fsanitize=undefined
3793     ;;
3794     valgrind-*)
3795         target_exec_default="valgrind"
3796         case "$toolchain" in
3797             valgrind-massif)
3798                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3799                 ;;
3800             valgrind-memcheck)
3801                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3802                 ;;
3803         esac
3804     ;;
3805     msvc)
3806         # Check whether the current MSVC version needs the C99 converter.
3807         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3808         # support enough of C99 to build ffmpeg. Default to the new
3809         # behaviour if the regexp was unable to match anything, since this
3810         # successfully parses the version number of existing supported
3811         # versions that require the converter (MSVC 2010 and 2012).
3812         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3813         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3814             cc_default="cl"
3815             cxx_default="cl"
3816         else
3817             cc_default="c99wrap cl"
3818             cxx_default="c99wrap cl"
3819         fi
3820         ld_default="$source_path/compat/windows/mslink"
3821         nm_default="dumpbin -symbols"
3822         ar_default="lib"
3823         case "$arch" in
3824         arm*)
3825             as_default="armasm"
3826             ;;
3827         esac
3828         target_os_default="win32"
3829         # Use a relative path for TMPDIR. This makes sure all the
3830         # ffconf temp files are written with a relative path, avoiding
3831         # issues with msys/win32 path conversion for MSVC parameters
3832         # such as -Fo<file> or -out:<file>.
3833         TMPDIR=.
3834     ;;
3835     icl)
3836         cc_default="icl"
3837         ld_default="xilink"
3838         nm_default="dumpbin -symbols"
3839         ar_default="xilib"
3840         target_os_default="win32"
3841         TMPDIR=.
3842     ;;
3843     gcov)
3844         add_cflags  -fprofile-arcs -ftest-coverage
3845         add_ldflags -fprofile-arcs -ftest-coverage
3846     ;;
3847     llvm-cov)
3848         add_cflags -fprofile-arcs -ftest-coverage
3849         add_ldflags --coverage
3850     ;;
3851     hardened)
3852         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3853         add_cflags   -fno-strict-overflow -fstack-protector-all
3854         add_ldflags  -Wl,-z,relro -Wl,-z,now
3855         add_cflags   -fPIE
3856         add_ldexeflags -fPIE -pie
3857     ;;
3858     ?*)
3859         die "Unknown toolchain $toolchain"
3860     ;;
3861 esac
3862
3863 test -n "$cross_prefix" && enable cross_compile
3864
3865 if enabled cross_compile; then
3866     test -n "$arch" && test -n "$target_os" ||
3867         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3868 fi
3869
3870 ar_default="${cross_prefix}${ar_default}"
3871 cc_default="${cross_prefix}${cc_default}"
3872 cxx_default="${cross_prefix}${cxx_default}"
3873 nm_default="${cross_prefix}${nm_default}"
3874 pkg_config_default="${cross_prefix}${pkg_config_default}"
3875 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3876     ranlib_default="${cross_prefix}${ranlib_default} -D"
3877 else
3878     ranlib_default="${cross_prefix}${ranlib_default}"
3879 fi
3880 strip_default="${cross_prefix}${strip_default}"
3881 windres_default="${cross_prefix}${windres_default}"
3882
3883 sysinclude_default="${sysroot}/usr/include"
3884
3885 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3886     target_exec target_os x86asmexe nvcc
3887 enabled cross_compile || host_cc_default=$cc
3888 set_default host_cc
3889
3890 pkg_config_fail_message=""
3891 if ! $pkg_config --version >/dev/null 2>&1; then
3892     warn "$pkg_config not found, library detection may fail."
3893     pkg_config=false
3894 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3895     pkg_config_fail_message="
3896 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3897 fi
3898
3899 if test $doxygen != $doxygen_default && \
3900   ! $doxygen --version >/dev/null 2>&1; then
3901     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3902 fi
3903
3904 exesuf() {
3905     case $1 in
3906         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3907     esac
3908 }
3909
3910 EXESUF=$(exesuf $target_os)
3911 HOSTEXESUF=$(exesuf $host_os)
3912
3913 # set temporary file name
3914 : ${TMPDIR:=$TEMPDIR}
3915 : ${TMPDIR:=$TMP}
3916 : ${TMPDIR:=/tmp}
3917
3918 if [ -n "$tempprefix" ] ; then
3919     mktemp(){
3920         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3921         echo "$tmpname"
3922         mkdir "$tmpname"
3923     }
3924 elif ! check_cmd mktemp -u XXXXXX; then
3925     # simple replacement for missing mktemp
3926     # NOT SAFE FOR GENERAL USE
3927     mktemp(){
3928         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3929         echo "$tmpname"
3930         mkdir "$tmpname"
3931     }
3932 fi
3933
3934 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3935     die "Unable to create temporary directory in $TMPDIR."
3936
3937 tmpfile(){
3938     tmp="${FFTMPDIR}/test"$2
3939     (set -C; exec > $tmp) 2> /dev/null ||
3940         die "Unable to create temporary file in $FFTMPDIR."
3941     eval $1=$tmp
3942 }
3943
3944 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3945 trap 'exit 2' INT
3946
3947 tmpfile TMPASM .asm
3948 tmpfile TMPC   .c
3949 tmpfile TMPCPP .cpp
3950 tmpfile TMPE   $EXESUF
3951 tmpfile TMPH   .h
3952 tmpfile TMPM   .m
3953 tmpfile TMPO   .o
3954 tmpfile TMPS   .S
3955 tmpfile TMPSH  .sh
3956 tmpfile TMPV   .ver
3957
3958 unset -f mktemp
3959
3960 chmod +x $TMPE
3961
3962 # make sure we can execute files in $TMPDIR
3963 cat > $TMPSH 2>> $logfile <<EOF
3964 #! /bin/sh
3965 EOF
3966 chmod +x $TMPSH >> $logfile 2>&1
3967 if ! $TMPSH >> $logfile 2>&1; then
3968     cat <<EOF
3969 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3970 variable to another directory and make sure that it is not mounted noexec.
3971 EOF
3972     die "Sanity test failed."
3973 fi
3974
3975 armasm_flags(){
3976     for flag; do
3977         case $flag in
3978             # Filter out MSVC cl.exe options from cflags that shouldn't
3979             # be passed to gas-preprocessor
3980             -M[TD]*)                                            ;;
3981             *)                  echo $flag                      ;;
3982         esac
3983    done
3984 }
3985
3986 cparser_flags(){
3987     for flag; do
3988         case $flag in
3989             -Wno-switch)             echo -Wno-switch-enum ;;
3990             -Wno-format-zero-length) ;;
3991             -Wdisabled-optimization) ;;
3992             -Wno-pointer-sign)       echo -Wno-other ;;
3993             *)                       echo $flag ;;
3994         esac
3995     done
3996 }
3997
3998 msvc_common_flags(){
3999     for flag; do
4000         case $flag in
4001             # In addition to specifying certain flags under the compiler
4002             # specific filters, they must be specified here as well or else the
4003             # generic catch all at the bottom will print the original flag.
4004             -Wall)                ;;
4005             -Wextra)              ;;
4006             -std=c99)             ;;
4007             # Common flags
4008             -fomit-frame-pointer) ;;
4009             -g)                   echo -Z7 ;;
4010             -fno-math-errno)      ;;
4011             -fno-common)          ;;
4012             -fno-signed-zeros)    ;;
4013             -fPIC)                ;;
4014             -mthumb)              ;;
4015             -march=*)             ;;
4016             -lz)                  echo zlib.lib ;;
4017             -lx264)               echo libx264.lib ;;
4018             -lstdc++)             ;;
4019             -l*)                  echo ${flag#-l}.lib ;;
4020             -LARGEADDRESSAWARE)   echo $flag ;;
4021             -L*)                  echo -libpath:${flag#-L} ;;
4022             *)                    echo $flag ;;
4023         esac
4024     done
4025 }
4026
4027 msvc_flags(){
4028     msvc_common_flags "$@"
4029     for flag; do
4030         case $flag in
4031             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4032                                        -wd4554 ;;
4033             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4034                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4035                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4036                                        -wd4307 \
4037                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4038         esac
4039     done
4040 }
4041
4042 icl_flags(){
4043     msvc_common_flags "$@"
4044     for flag; do
4045         case $flag in
4046             # Despite what Intel's documentation says -Wall, which is supported
4047             # on Windows, does enable remarks so disable them here.
4048             -Wall)                echo $flag -Qdiag-disable:remark ;;
4049             -std=c99)             echo -Qstd=c99 ;;
4050             -flto)                echo -ipo ;;
4051         esac
4052     done
4053 }
4054
4055 icc_flags(){
4056     for flag; do
4057         case $flag in
4058             -flto)                echo -ipo ;;
4059             *)                    echo $flag ;;
4060         esac
4061     done
4062 }
4063
4064 pgi_flags(){
4065     for flag; do
4066         case $flag in
4067             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4068             -fomit-frame-pointer) echo -Mnoframe ;;
4069             -g)                   echo -gopt ;;
4070             *)                    echo $flag ;;
4071         esac
4072     done
4073 }
4074
4075 suncc_flags(){
4076     for flag; do
4077         case $flag in
4078             -march=*|-mcpu=*)
4079                 case "${flag#*=}" in
4080                     native)                   echo -xtarget=native       ;;
4081                     v9|niagara)               echo -xarch=sparc          ;;
4082                     ultrasparc)               echo -xarch=sparcvis       ;;
4083                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4084                     i586|pentium)             echo -xchip=pentium        ;;
4085                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4086                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4087                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4088                     pentium4*)          echo -xtarget=pentium4           ;;
4089                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4090                     *-sse3)             echo -xarch=sse3                 ;;
4091                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4092                     bonnell)                   echo -xarch=ssse3         ;;
4093                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4094                     westmere)                  echo -xtarget=westmere    ;;
4095                     silvermont)                echo -xarch=sse4_2        ;;
4096                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4097                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4098                                                echo -xarch=avx           ;;
4099                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4100                     btver1)                    echo -xarch=amdsse4a      ;;
4101                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4102                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4103                     k8|opteron|athlon64|athlon-fx)
4104                                                echo -xarch=sse2a         ;;
4105                     athlon*)                   echo -xarch=pentium_proa  ;;
4106                 esac
4107                 ;;
4108             -std=c99)             echo -xc99              ;;
4109             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4110             -fPIC)                echo -KPIC -xcode=pic32 ;;
4111             -W*,*)                echo $flag              ;;
4112             -f*-*|-W*|-mimpure-text)                      ;;
4113             -shared)              echo -G                 ;;
4114             *)                    echo $flag              ;;
4115         esac
4116     done
4117 }
4118
4119 tms470_flags(){
4120     for flag; do
4121         case $flag in
4122             -march=*|-mcpu=*)
4123                 case "${flag#*=}" in
4124                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4125                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4126                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4127                     armv6*|arm11*)          echo -mv=6   ;;
4128                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4129                                             echo -mv=5e  ;;
4130                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4131                 esac
4132                 ;;
4133             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4134             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4135             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4136             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4137             -msoft-float)   echo --float_support=vfplib       ;;
4138             -O[0-3]|-mf=*)  echo $flag                        ;;
4139             -g)             echo -g -mn                       ;;
4140             -pds=*)         echo $flag                        ;;
4141             -D*|-I*)        echo $flag                        ;;
4142             --gcc|--abi=*)  echo $flag                        ;;
4143             -me)            echo $flag                        ;;
4144         esac
4145     done
4146 }
4147
4148 probe_cc(){
4149     pfx=$1
4150     _cc=$2
4151     first=$3
4152
4153     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4154     unset _ld_o _ldflags _ld_lib _ld_path
4155     unset _depflags _DEPCMD _DEPFLAGS
4156     _flags_filter=echo
4157
4158     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4159         true # no-op to avoid reading stdin in following checks
4160     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4161         _type=llvm_gcc
4162         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4163         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4164         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4168         _type=gcc
4169         gcc_version=$($_cc --version | head -n1)
4170         gcc_basever=$($_cc -dumpversion)
4171         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4172         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4173         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4174         case $gcc_basever in
4175             2) ;;
4176             2.*) ;;
4177             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4178         esac
4179         if [ "$first" = true ]; then
4180             case $gcc_basever in
4181                 4.2*)
4182                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4183             esac
4184         fi
4185         _cflags_speed='-O3'
4186         _cflags_size='-Os'
4187     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4188         _type=icc
4189         _ident=$($_cc --version | head -n1)
4190         _depflags='-MMD'
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193         _cflags_noopt='-O1'
4194         _flags_filter=icc_flags
4195     elif $_cc -v 2>&1 | grep -q xlc; then
4196         _type=xlc
4197         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4198         _cflags_speed='-O5'
4199         _cflags_size='-O5 -qcompact'
4200     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4201         test -d "$sysroot" || die "No valid sysroot specified."
4202         _type=armcc
4203         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4204         armcc_conf="$PWD/armcc.conf"
4205         $_cc --arm_linux_configure                 \
4206              --arm_linux_config_file="$armcc_conf" \
4207              --configure_sysroot="$sysroot"        \
4208              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4209              die "Error creating armcc configuration file."
4210         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4211         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4212         as_default="${cross_prefix}gcc"
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4217         _type=tms470
4218         _ident=$($_cc -version | head -n1 | tr -s ' ')
4219         _flags='--gcc --abi=eabi -me'
4220         _cc_e='-ppl -fe=$@'
4221         _cc_o='-fe=$@'
4222         _depflags='-ppa -ppd=$(@:.o=.d)'
4223         _cflags_speed='-O3 -mf=5'
4224         _cflags_size='-O3 -mf=2'
4225         _flags_filter=tms470_flags
4226     elif $_cc -v 2>&1 | grep -q clang; then
4227         _type=clang
4228         _ident=$($_cc --version 2>/dev/null | head -n1)
4229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4230         _cflags_speed='-O3'
4231         _cflags_size='-Oz'
4232     elif $_cc -V 2>&1 | grep -q Sun; then
4233         _type=suncc
4234         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4235         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4236         _DEPFLAGS='-xM1 -xc99'
4237         _ldflags='-std=c99'
4238         _cflags_speed='-O5'
4239         _cflags_size='-O5 -xspace'
4240         _flags_filter=suncc_flags
4241     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4242         _type=pathscale
4243         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4244         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4245         _cflags_speed='-O2'
4246         _cflags_size='-Os'
4247         _flags_filter='filter_out -Wdisabled-optimization'
4248     elif $_cc -v 2>&1 | grep -q Open64; then
4249         _type=open64
4250         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4251         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4252         _cflags_speed='-O2'
4253         _cflags_size='-Os'
4254         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4255     elif $_cc -V 2>&1 | grep -q Portland; then
4256         _type=pgi
4257         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4258         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4259         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4260         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4261         _cflags_noopt="-O"
4262         _flags_filter=pgi_flags
4263     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4264         _type=armasm
4265         _ident=$($_cc | head -n1)
4266         # 4509: "This form of conditional instruction is deprecated"
4267         _flags="-nologo -ignore 4509"
4268         _flags_filter=armasm_flags
4269     elif $_cc 2>&1 | grep -q Intel; then
4270         _type=icl
4271         _ident=$($_cc 2>&1 | head -n1)
4272         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4273         # Not only is O3 broken on 13.x+ but it is slower on all previous
4274         # versions (tested) as well.
4275         _cflags_speed="-O2"
4276         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4277         if $_cc 2>&1 | grep -q Linker; then
4278             _ld_o='-out:$@'
4279         else
4280             _ld_o='-Fe$@'
4281         fi
4282         _cc_o='-Fo$@'
4283         _cc_e='-P'
4284         _flags_filter=icl_flags
4285         _ld_lib='lib%.a'
4286         _ld_path='-libpath:'
4287         # -Qdiag-error to make icl error when seeing certain unknown arguments
4288         _flags='-nologo -Qdiag-error:4044,10157'
4289         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4290         # with MSVC which enables it by default.
4291         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4292         disable stripping
4293     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4294         # lld can emulate multiple different linkers; in ms link.exe mode,
4295         # the -? parameter gives the help output which contains an identifyable
4296         # string, while it gives an error in other modes.
4297         _type=lld-link
4298         # The link.exe mode doesn't have a switch for getting the version,
4299         # but we can force it back to gnu mode and get the version from there.
4300         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4301         _ld_o='-out:$@'
4302         _flags_filter=msvc_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4306         _type=msvc
4307         _ident=$($_cc 2>&1 | head -n1)
4308         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4309         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4310         _cflags_speed="-O2"
4311         _cflags_size="-O1"
4312         _cflags_noopt="-O1"
4313         if $_cc -nologo- 2>&1 | grep -q Linker; then
4314             _ld_o='-out:$@'
4315         else
4316             _ld_o='-Fe$@'
4317         fi
4318         _cc_o='-Fo$@'
4319         _cc_e='-P -Fi$@'
4320         _flags_filter=msvc_flags
4321         _ld_lib='lib%.a'
4322         _ld_path='-libpath:'
4323         _flags='-nologo'
4324         disable stripping
4325     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4326         _type=cparser
4327         _ident=$($_cc --version | head -n1)
4328         _depflags='-MMD'
4329         _cflags_speed='-O4'
4330         _cflags_size='-O2'
4331         _flags_filter=cparser_flags
4332     fi
4333
4334     eval ${pfx}_type=\$_type
4335     eval ${pfx}_ident=\$_ident
4336 }
4337
4338 set_ccvars(){
4339     eval ${1}_C=\${_cc_c-\${${1}_C}}
4340     eval ${1}_E=\${_cc_e-\${${1}_E}}
4341     eval ${1}_O=\${_cc_o-\${${1}_O}}
4342
4343     if [ -n "$_depflags" ]; then
4344         eval ${1}_DEPFLAGS=\$_depflags
4345     else
4346         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4347         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4348         eval DEP${1}FLAGS=\$_flags
4349     fi
4350 }
4351
4352 probe_cc cc "$cc" "true"
4353 cflags_filter=$_flags_filter
4354 cflags_speed=$_cflags_speed
4355 cflags_size=$_cflags_size
4356 cflags_noopt=$_cflags_noopt
4357 add_cflags $_flags $_cflags
4358 cc_ldflags=$_ldflags
4359 set_ccvars CC
4360 set_ccvars CXX
4361
4362 probe_cc hostcc "$host_cc"
4363 host_cflags_filter=$_flags_filter
4364 host_cflags_speed=$_cflags_speed
4365 add_host_cflags  $_flags $_cflags
4366 set_ccvars HOSTCC
4367
4368 test -n "$cc_type" && enable $cc_type ||
4369     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4370
4371 : ${as_default:=$cc}
4372 : ${objcc_default:=$cc}
4373 : ${dep_cc_default:=$cc}
4374 : ${ld_default:=$cc}
4375 : ${host_ld_default:=$host_cc}
4376 set_default ar as objcc dep_cc ld ln_s host_ld windres
4377
4378 probe_cc as "$as"
4379 asflags_filter=$_flags_filter
4380 add_asflags $_flags $_cflags
4381 set_ccvars AS
4382
4383 probe_cc objcc "$objcc"
4384 objcflags_filter=$_flags_filter
4385 add_objcflags $_flags $_cflags
4386 set_ccvars OBJC
4387
4388 probe_cc ld "$ld"
4389 ldflags_filter=$_flags_filter
4390 add_ldflags $_flags $_ldflags
4391 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4392 LD_O=${_ld_o-$LD_O}
4393 LD_LIB=${_ld_lib-$LD_LIB}
4394 LD_PATH=${_ld_path-$LD_PATH}
4395
4396 probe_cc hostld "$host_ld"
4397 host_ldflags_filter=$_flags_filter
4398 add_host_ldflags $_flags $_ldflags
4399 HOSTLD_O=${_ld_o-$HOSTLD_O}
4400
4401 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4402     probe_cc depcc "$dep_cc"
4403     CCDEP=${_DEPCMD:-$DEPCMD}
4404     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4405     DEPCCFLAGS=$_flags
4406 fi
4407
4408 if $ar 2>&1 | grep -q Microsoft; then
4409     arflags="-nologo"
4410     ar_o='-out:$@'
4411 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4412     arflags="rq"
4413     ar_o='$@'
4414 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4415     arflags='-Xany -r -c'
4416     ar_o='$@'
4417 elif $ar 2>&1 | grep -q "\[D\] "; then
4418     arflags="rcD"
4419     ar_o='$@'
4420 else
4421     arflags="rc"
4422     ar_o='$@'
4423 fi
4424
4425 add_cflags $extra_cflags
4426 add_cxxflags $extra_cxxflags
4427 add_objcflags $extra_objcflags
4428 add_asflags $extra_cflags
4429
4430 if test -n "$sysroot"; then
4431     case "$cc_type" in
4432         gcc|llvm_gcc|clang)
4433             add_cppflags --sysroot="$sysroot"
4434             add_ldflags --sysroot="$sysroot"
4435         ;;
4436         tms470)
4437             add_cppflags -I"$sysinclude"
4438             add_ldflags  --sysroot="$sysroot"
4439         ;;
4440     esac
4441 fi
4442
4443 if test "$cpu" = host; then
4444     enabled cross_compile &&
4445         die "--cpu=host makes no sense when cross-compiling."
4446
4447     case "$cc_type" in
4448         gcc|llvm_gcc)
4449             check_native(){
4450                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4451                 sed -n "/cc1.*$1=/{
4452                             s/.*$1=\\([^ ]*\\).*/\\1/
4453                             p
4454                             q
4455                         }" $TMPE
4456             }
4457             cpu=$(check_native -march || check_native -mcpu)
4458         ;;
4459         clang)
4460             check_native(){
4461                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4462                 sed -n "/cc1.*-target-cpu /{
4463                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4464                             p
4465                             q
4466                         }" $TMPE
4467             }
4468             cpu=$(check_native -march)
4469         ;;
4470     esac
4471
4472     test "${cpu:-host}" = host &&
4473         die "--cpu=host not supported with compiler $cc"
4474 fi
4475
4476 # Deal with common $arch aliases
4477 case "$arch" in
4478     aarch64|arm64)
4479         arch="aarch64"
4480     ;;
4481     arm*|iPad*|iPhone*)
4482         arch="arm"
4483     ;;
4484     mips*|IP*)
4485         case "$arch" in
4486         *el)
4487             add_cppflags -EL
4488             add_ldflags -EL
4489         ;;
4490         *eb)
4491             add_cppflags -EB
4492             add_ldflags -EB
4493         ;;
4494         esac
4495         arch="mips"
4496     ;;
4497     parisc*|hppa*)
4498         arch="parisc"
4499     ;;
4500     "Power Macintosh"|ppc*|powerpc*)
4501         arch="ppc"
4502     ;;
4503     s390|s390x)
4504         arch="s390"
4505     ;;
4506     sh4|sh)
4507         arch="sh4"
4508     ;;
4509     sun4*|sparc*)
4510         arch="sparc"
4511     ;;
4512     tilegx|tile-gx)
4513         arch="tilegx"
4514     ;;
4515     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4516         arch="x86"
4517     ;;
4518 esac
4519
4520 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4521 enable $arch
4522
4523 # Add processor-specific flags
4524 if enabled aarch64; then
4525
4526     case $cpu in
4527         armv*)
4528             cpuflags="-march=$cpu"
4529         ;;
4530         *)
4531             cpuflags="-mcpu=$cpu"
4532         ;;
4533     esac
4534
4535 elif enabled alpha; then
4536
4537     cpuflags="-mcpu=$cpu"
4538
4539 elif enabled arm; then
4540
4541     check_arm_arch() {
4542         check_cpp_condition stddef.h \
4543             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4544             $cpuflags
4545     }
4546
4547     probe_arm_arch() {
4548         if   check_arm_arch 4;        then echo armv4
4549         elif check_arm_arch 4T;       then echo armv4t
4550         elif check_arm_arch 5;        then echo armv5
4551         elif check_arm_arch 5E;       then echo armv5e
4552         elif check_arm_arch 5T;       then echo armv5t
4553         elif check_arm_arch 5TE;      then echo armv5te
4554         elif check_arm_arch 5TEJ;     then echo armv5te
4555         elif check_arm_arch 6;        then echo armv6
4556         elif check_arm_arch 6J;       then echo armv6j
4557         elif check_arm_arch 6K;       then echo armv6k
4558         elif check_arm_arch 6Z;       then echo armv6z
4559         elif check_arm_arch 6ZK;      then echo armv6zk
4560         elif check_arm_arch 6T2;      then echo armv6t2
4561         elif check_arm_arch 7;        then echo armv7
4562         elif check_arm_arch 7A  7_A;  then echo armv7-a
4563         elif check_arm_arch 7S;       then echo armv7-a
4564         elif check_arm_arch 7R  7_R;  then echo armv7-r
4565         elif check_arm_arch 7M  7_M;  then echo armv7-m
4566         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4567         elif check_arm_arch 8A  8_A;  then echo armv8-a
4568         fi
4569     }
4570
4571     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4572
4573     case $cpu in
4574         armv*)
4575             cpuflags="-march=$cpu"
4576             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4577         ;;
4578         *)
4579             cpuflags="-mcpu=$cpu"
4580             case $cpu in
4581                 cortex-a*)                               subarch=armv7a  ;;
4582                 cortex-r*)                               subarch=armv7r  ;;
4583                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4584                 arm11*)                                  subarch=armv6   ;;
4585                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4586                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4587                 *)                             subarch=$(probe_arm_arch) ;;
4588             esac
4589         ;;
4590     esac
4591
4592     case "$subarch" in
4593         armv5t*)    enable fast_clz                ;;
4594         armv[6-8]*)
4595             enable fast_clz
4596             disabled fast_unaligned || enable fast_unaligned
4597             ;;
4598     esac
4599
4600 elif enabled avr32; then
4601
4602     case $cpu in
4603         ap7[02]0[0-2])
4604             subarch="avr32_ap"
4605             cpuflags="-mpart=$cpu"
4606         ;;
4607         ap)
4608             subarch="avr32_ap"
4609             cpuflags="-march=$cpu"
4610         ;;
4611         uc3[ab]*)
4612             subarch="avr32_uc"
4613             cpuflags="-mcpu=$cpu"
4614         ;;
4615         uc)
4616             subarch="avr32_uc"
4617             cpuflags="-march=$cpu"
4618         ;;
4619     esac
4620
4621 elif enabled bfin; then
4622
4623     cpuflags="-mcpu=$cpu"
4624
4625 elif enabled mips; then
4626
4627     cpuflags="-march=$cpu"
4628
4629     if [ "$cpu" != "generic" ]; then
4630         disable mips32r2
4631         disable mips32r5
4632         disable mips64r2
4633         disable mips32r6
4634         disable mips64r6
4635         disable loongson2
4636         disable loongson3
4637
4638         case $cpu in
4639             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4640                 enable mips32r2
4641                 disable msa
4642             ;;
4643             p5600|i6400|p6600)
4644                 disable mipsdsp
4645                 disable mipsdspr2
4646             ;;
4647             loongson*)
4648                 enable loongson2
4649                 enable loongson3
4650                 enable local_aligned
4651                 enable simd_align_16
4652                 enable fast_64bit
4653                 enable fast_clz
4654                 enable fast_cmov
4655                 enable fast_unaligned
4656                 disable aligned_stack
4657                 disable mipsfpu
4658                 disable mipsdsp
4659                 disable mipsdspr2
4660                 case $cpu in
4661                     loongson3*)
4662                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4663                     ;;
4664                     loongson2e)
4665                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4666                     ;;
4667                     loongson2f)
4668                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4669                     ;;
4670                 esac
4671             ;;
4672             *)
4673                 # Unknown CPU. Disable everything.
4674                 warn "unknown CPU. Disabling all MIPS optimizations."
4675                 disable mipsfpu
4676                 disable mipsdsp
4677                 disable mipsdspr2
4678                 disable msa
4679                 disable mmi
4680             ;;
4681         esac
4682
4683         case $cpu in
4684             24kc)
4685                 disable mipsfpu
4686                 disable mipsdsp
4687                 disable mipsdspr2
4688             ;;
4689             24kf*)
4690                 disable mipsdsp
4691                 disable mipsdspr2
4692             ;;
4693             24kec|34kc|1004kc)
4694                 disable mipsfpu
4695                 disable mipsdspr2
4696             ;;
4697             24kef*|34kf*|1004kf*)
4698                 disable mipsdspr2
4699             ;;
4700             74kc)
4701                 disable mipsfpu
4702             ;;
4703             p5600)
4704                 enable mips32r5
4705                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4706             ;;
4707             i6400)
4708                 enable mips64r6
4709                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4710             ;;
4711             p6600)
4712                 enable mips64r6
4713                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4714             ;;
4715         esac
4716     else
4717         # We do not disable anything. Is up to the user to disable the unwanted features.
4718         warn 'generic cpu selected'
4719     fi
4720
4721 elif enabled ppc; then
4722
4723     disable ldbrx
4724
4725     case $(tolower $cpu) in
4726         601|ppc601|powerpc601)
4727             cpuflags="-mcpu=601"
4728             disable altivec
4729         ;;
4730         603*|ppc603*|powerpc603*)
4731             cpuflags="-mcpu=603"
4732             disable altivec
4733         ;;
4734         604*|ppc604*|powerpc604*)
4735             cpuflags="-mcpu=604"
4736             disable altivec
4737         ;;
4738         g3|75*|ppc75*|powerpc75*)
4739             cpuflags="-mcpu=750"
4740             disable altivec
4741         ;;
4742         g4|745*|ppc745*|powerpc745*)
4743             cpuflags="-mcpu=7450"
4744             disable vsx
4745         ;;
4746         74*|ppc74*|powerpc74*)
4747             cpuflags="-mcpu=7400"
4748             disable vsx
4749         ;;
4750         g5|970|ppc970|powerpc970)
4751             cpuflags="-mcpu=970"
4752             disable vsx
4753         ;;
4754         power[3-6]*)
4755             cpuflags="-mcpu=$cpu"
4756             disable vsx
4757         ;;
4758         power[7-8]*)
4759             cpuflags="-mcpu=$cpu"
4760         ;;
4761         cell)
4762             cpuflags="-mcpu=cell"
4763             enable ldbrx
4764             disable vsx
4765         ;;
4766         e500mc)
4767             cpuflags="-mcpu=e500mc"
4768             disable altivec
4769         ;;
4770         e500v2)
4771             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4772             disable altivec
4773             disable dcbzl
4774         ;;
4775         e500)
4776             cpuflags="-mcpu=8540 -mhard-float"
4777             disable altivec
4778             disable dcbzl
4779         ;;
4780     esac
4781
4782 elif enabled sparc; then
4783
4784     case $cpu in
4785         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4786             cpuflags="-mcpu=$cpu"
4787         ;;
4788         ultrasparc*|niagara[234])
4789             cpuflags="-mcpu=$cpu"
4790         ;;
4791     esac
4792
4793 elif enabled x86; then
4794
4795     case $cpu in
4796         i[345]86|pentium)
4797             cpuflags="-march=$cpu"
4798             disable i686
4799             disable mmx
4800         ;;
4801         # targets that do NOT support nopl and conditional mov (cmov)
4802         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4803             cpuflags="-march=$cpu"
4804             disable i686
4805         ;;
4806         # targets that do support nopl and conditional mov (cmov)
4807         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4808         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4809         |amdfam10|barcelona|b[dt]ver*|znver*)
4810             cpuflags="-march=$cpu"
4811             enable i686
4812             enable fast_cmov
4813         ;;
4814         # targets that do support conditional mov but on which it's slow
4815         pentium4|pentium4m|prescott|nocona)
4816             cpuflags="-march=$cpu"
4817             enable i686
4818             disable fast_cmov
4819         ;;
4820     esac
4821
4822 fi
4823
4824 if [ "$cpu" != generic ]; then
4825     add_cflags  $cpuflags
4826     add_asflags $cpuflags
4827     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4828 fi
4829
4830 # compiler sanity check
4831 check_exec <<EOF
4832 int main(void){ return 0; }
4833 EOF
4834 if test "$?" != 0; then
4835     echo "$cc is unable to create an executable file."
4836     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4837         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4838         echo "Only do this if you know what cross compiling means."
4839     fi
4840     die "C compiler test failed."
4841 fi
4842
4843 add_cppflags -D_ISOC99_SOURCE
4844 add_cxxflags -D__STDC_CONSTANT_MACROS
4845 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4846
4847 # some compilers silently accept -std=c11, so we also need to check that the
4848 # version macro is defined properly
4849 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4850     add_cflags -std=c11 ||
4851     check_cflags -std=c99
4852
4853 check_cppflags -D_FILE_OFFSET_BITS=64
4854 check_cppflags -D_LARGEFILE_SOURCE
4855
4856 add_host_cppflags -D_ISOC99_SOURCE
4857 check_host_cflags -std=c99
4858 check_host_cflags -Wall
4859 check_host_cflags $host_cflags_speed
4860
4861 check_64bit(){
4862     arch32=$1
4863     arch64=$2
4864     expr=$3
4865     check_code cc "" "int test[2*($expr) - 1]" &&
4866         subarch=$arch64 || subarch=$arch32
4867 }
4868
4869 case "$arch" in
4870     aarch64|alpha|ia64)
4871         spic=$shared
4872     ;;
4873     mips)
4874         check_64bit mips mips64 '_MIPS_SIM > 1'
4875         spic=$shared
4876     ;;
4877     parisc)
4878         check_64bit parisc parisc64 'sizeof(void *) > 4'
4879         spic=$shared
4880     ;;
4881     ppc)
4882         check_64bit ppc ppc64 'sizeof(void *) > 4'
4883         spic=$shared
4884     ;;