Merge commit '0ce3761c781f2c2de40a5a8a99563878804f47cc'
[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   --disable-jack           disable libjack support [autodetect]
221   --enable-jni             enable JNI support [no]
222   --enable-ladspa          enable LADSPA audio filtering [no]
223   --enable-libass          enable libass subtitles rendering,
224                            needed for subtitles and ass filter [no]
225   --enable-libbluray       enable BluRay reading using libbluray [no]
226   --enable-libbs2b         enable bs2b DSP library [no]
227   --enable-libcaca         enable textual display using libcaca [no]
228   --enable-libcelt         enable CELT decoding via libcelt [no]
229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [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-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
320   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
323
324 Toolchain options:
325   --arch=ARCH              select architecture [$arch]
326   --cpu=CPU                select the minimum required CPU (affects
327                            instruction selection, may crash on older CPUs)
328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
329   --progs-suffix=SUFFIX    program name suffix []
330   --enable-cross-compile   assume a cross-compiler is used
331   --sysroot=PATH           root of cross-build tree
332   --sysinclude=PATH        location of cross-build system headers
333   --target-os=OS           compiler targets OS [$target_os]
334   --target-exec=CMD        command to run executables on target
335   --target-path=DIR        path to view of build directory on target
336   --target-samples=DIR     path to samples directory on target
337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
338   --toolchain=NAME         set tool defaults according to NAME
339   --nm=NM                  use nm tool NM [$nm_default]
340   --ar=AR                  use archive tool AR [$ar_default]
341   --as=AS                  use assembler AS [$as_default]
342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
343   --strip=STRIP            use strip tool STRIP [$strip_default]
344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
346   --cc=CC                  use C compiler CC [$cc_default]
347   --cxx=CXX                use C compiler CXX [$cxx_default]
348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
351   --ld=LD                  use linker LD [$ld_default]
352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
356   --host-cc=HOSTCC         use host C compiler HOSTCC
357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
359   --host-ld=HOSTLD         use host linker HOSTLD
360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
361   --host-libs=HLIBS        use libs HLIBS when linking for host
362   --host-os=OS             compiler host OS [$target_os]
363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
370   --extra-version=STRING   version string suffix []
371   --optflags=OPTFLAGS      override optimization-related compiler flags
372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
373   --build-suffix=SUFFIX    library name suffix []
374   --enable-pic             build position-independent code
375   --enable-thumb           compile for Thumb instruction set
376   --enable-lto             use link-time optimization
377   --env="ENV=override"     override the environment variables
378
379 Advanced options (experts only):
380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
381   --custom-allocator=NAME  use a supported custom allocator
382   --disable-symver         disable symbol versioning
383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
384   --disable-safe-bitstream-reader
385                            disable buffer boundary checking in bitreaders
386                            (faster, but may crash)
387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
388
389 Optimization options (experts only):
390   --disable-asm            disable all assembly optimizations
391   --disable-altivec        disable AltiVec optimizations
392   --disable-vsx            disable VSX optimizations
393   --disable-power8         disable POWER8 optimizations
394   --disable-amd3dnow       disable 3DNow! optimizations
395   --disable-amd3dnowext    disable 3DNow! extended optimizations
396   --disable-mmx            disable MMX optimizations
397   --disable-mmxext         disable MMXEXT optimizations
398   --disable-sse            disable SSE optimizations
399   --disable-sse2           disable SSE2 optimizations
400   --disable-sse3           disable SSE3 optimizations
401   --disable-ssse3          disable SSSE3 optimizations
402   --disable-sse4           disable SSE4 optimizations
403   --disable-sse42          disable SSE4.2 optimizations
404   --disable-avx            disable AVX optimizations
405   --disable-xop            disable XOP optimizations
406   --disable-fma3           disable FMA3 optimizations
407   --disable-fma4           disable FMA4 optimizations
408   --disable-avx2           disable AVX2 optimizations
409   --disable-aesni          disable AESNI optimizations
410   --disable-armv5te        disable armv5te optimizations
411   --disable-armv6          disable armv6 optimizations
412   --disable-armv6t2        disable armv6t2 optimizations
413   --disable-vfp            disable VFP optimizations
414   --disable-neon           disable NEON optimizations
415   --disable-inline-asm     disable use of inline assembly
416   --disable-x86asm         disable use of standalone x86 assembly
417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
419   --disable-msa            disable MSA optimizations
420   --disable-mipsfpu        disable floating point MIPS optimizations
421   --disable-mmi            disable Loongson SIMD optimizations
422   --disable-fast-unaligned consider unaligned accesses slow
423
424 Developer options (useful when working on FFmpeg itself):
425   --disable-debug          disable debugging symbols
426   --enable-debug=LEVEL     set the debug level [$debuglevel]
427   --disable-optimizations  disable compiler optimizations
428   --enable-extra-warnings  enable more compiler warnings
429   --disable-stripping      disable stripping of executables and shared libraries
430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
431                            2 causes a slowdown at runtime.
432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
434                            leaks and errors, using the specified valgrind binary.
435                            Cannot be combined with --target-exec
436   --enable-ftrapv          Trap arithmetic overflows
437   --samples=PATH           location of test samples for FATE, if not set use
438                            \$FATE_SAMPLES at make invocation time.
439   --enable-neon-clobber-test check NEON registers for clobbering (should be
440                            used only for debugging purposes)
441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
442                            should be used only for debugging purposes)
443   --enable-random          randomly enable/disable components
444   --disable-random
445   --enable-random=LIST     randomly enable/disable specific components or
446   --disable-random=LIST    component groups. LIST is a comma-separated list
447                            of NAME[:PROB] entries where NAME is a component
448                            (group) and PROB the probability associated with
449                            NAME (default 0.5).
450   --random-seed=VALUE      seed value for --enable/disable-random
451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
452                            (only applies to --disable-optimizations builds)
453   --enable-osfuzz          Enable building fuzzer tool
454   --libfuzzer=PATH         path to libfuzzer
455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
456                            in the name) of tests whose result is ignored
457   --enable-linux-perf      enable Linux Performance Monitor API
458
459 NOTE: Object files are built at the place where configure is launched.
460 EOF
461   exit 0
462 }
463
464 quotes='""'
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case $v in $pat) printf '%s ' $v ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_safe(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_safe(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_safe(){
640     for var; do
641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
642     done
643 }
644
645 disable_safe(){
646     for var; do
647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op='=' || op=!=
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op='=' || op=!=
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op='=' || op=!=
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 do_check_deps(){
735     for cfg; do
736         cfg="${cfg#!}"
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740         append allopts $cfg
741
742         eval dep_all="\$${cfg}_deps"
743         eval dep_any="\$${cfg}_deps_any"
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_sel dep_sgs dep_ifa dep_ifn
750         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$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_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         if enabled $cfg; then
760             enable_deep $dep_sel
761             enable_deep_weak $dep_sgs
762         fi
763
764         disable ${cfg}_checking
765     done
766 }
767
768 check_deps(){
769     unset allopts
770
771     do_check_deps "$@"
772
773     for cfg in $allopts; do
774         enabled $cfg || continue
775         eval dep_extralibs="\$${cfg}_extralibs"
776         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
777     done
778 }
779
780 print_config(){
781     pfx=$1
782     files=$2
783     shift 2
784     map 'eval echo "$v \${$v:-no}"' "$@" |
785     awk "BEGIN { split(\"$files\", files) }
786         {
787             c = \"$pfx\" toupper(\$1);
788             v = \$2;
789             sub(/yes/, 1, v);
790             sub(/no/,  0, v);
791             for (f in files) {
792                 file = files[f];
793                 if (file ~ /\\.h\$/) {
794                     printf(\"#define %s %d\\n\", c, v) >>file;
795                 } else if (file ~ /\\.asm\$/) {
796                     printf(\"%%define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.mak\$/) {
798                     n = -v ? \"\" : \"!\";
799                     printf(\"%s%s=yes\\n\", n, c) >>file;
800                 } else if (file ~ /\\.texi\$/) {
801                     pre = -v ? \"\" : \"@c \";
802                     yesno = \$2;
803                     c2 = tolower(c);
804                     gsub(/_/, \"-\", c2);
805                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
806                 }
807             }
808         }"
809 }
810
811 print_enabled(){
812     suf=$1
813     shift
814     for v; do
815         enabled $v && printf "%s\n" ${v%$suf}
816     done
817 }
818
819 append(){
820     var=$1
821     shift
822     eval "$var=\"\$$var $*\""
823 }
824
825 prepend(){
826     var=$1
827     shift
828     eval "$var=\"$* \$$var\""
829 }
830
831 unique(){
832     var=$1
833     uniq_list=""
834     for tok in $(eval echo \$$var); do
835         uniq_list="$(filter_out $tok $uniq_list) $tok"
836     done
837     eval "$var=\"${uniq_list}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldlibflags(){
873     append LDLIBFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1137 }
1138
1139 check_func(){
1140     log check_func "$@"
1141     func=$1
1142     shift
1143     disable $func
1144     check_ld "cc" "$@" <<EOF && enable $func
1145 extern int $func();
1146 int main(void){ $func(); }
1147 EOF
1148 }
1149
1150 check_complexfunc(){
1151     log check_complexfunc "$@"
1152     func=$1
1153     narg=$2
1154     shift 2
1155     test $narg = 2 && args="f, g" || args="f * I"
1156     disable $func
1157     check_ld "cc" "$@" <<EOF && enable $func
1158 #include <complex.h>
1159 #include <math.h>
1160 float foo(complex float f, complex float g) { return $func($args); }
1161 int main(void){ return (int) foo; }
1162 EOF
1163 }
1164
1165 check_mathfunc(){
1166     log check_mathfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <math.h>
1174 float foo(float f, float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_func_headers(){
1180     log check_func_headers "$@"
1181     headers=$1
1182     funcs=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             print_include $hdr
1187         done
1188         echo "#include <stdint.h>"
1189         for func in $funcs; do
1190             echo "long check_$func(void) { return (long) $func; }"
1191         done
1192         echo "int main(void) { int ret = 0;"
1193         # LTO could optimize out the test functions without this
1194         for func in $funcs; do
1195             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1196         done
1197         echo "return ret; }"
1198     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_class_headers_cpp(){
1202     log check_class_headers_cpp "$@"
1203     headers=$1
1204     classes=$2
1205     shift 2
1206     {
1207         for hdr in $headers; do
1208             echo "#include <$hdr>"
1209         done
1210         echo "int main(void) { "
1211         i=1
1212         for class in $classes; do
1213             echo "$class obj$i;"
1214             i=$(expr $i + 1)
1215         done
1216         echo "return 0; }"
1217     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1218 }
1219
1220 check_cpp_condition(){
1221     log check_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 test_cflags_cc(){
1234     log test_cflags_cc "$@"
1235     flags=$1
1236     header=$2
1237     condition=$3
1238     shift 3
1239     set -- $($cflags_filter "$flags")
1240     check_cc "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_lib(){
1249     log check_lib "$@"
1250     name="$1"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     disable $name
1255     check_func_headers "$headers" "$funcs" "$@" &&
1256         enable $name && add_extralibs "$@"
1257 }
1258
1259 check_lib_cpp(){
1260     log check_lib_cpp "$@"
1261     headers="$1"
1262     classes="$2"
1263     shift 2
1264     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1265 }
1266
1267 check_pkg_config(){
1268     log check_pkg_config "$@"
1269     pkg_version="$1"
1270     pkg="${1%% *}"
1271     headers="$2"
1272     funcs="$3"
1273     shift 3
1274     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1275     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1276     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1277     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1278         set_safe "${pkg}_cflags"    $pkg_cflags &&
1279         set_safe "${pkg}_extralibs" $pkg_libs
1280 }
1281
1282 check_exec(){
1283     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1284 }
1285
1286 check_exec_crash(){
1287     log check_exec_crash "$@"
1288     code=$(cat)
1289
1290     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1291     # are safe but may not be available everywhere.  Thus we use
1292     # raise(SIGTERM) instead.  The check is run in a subshell so we
1293     # can redirect the "Terminated" message from the shell.  SIGBUS
1294     # is not defined by standard C so it is used conditionally.
1295
1296     (check_exec "$@") >> $logfile 2>&1 <<EOF
1297 #include <signal.h>
1298 static void sighandler(int sig){
1299     raise(SIGTERM);
1300 }
1301 int foo(void){
1302     $code
1303 }
1304 int (*func_ptr)(void) = foo;
1305 int main(void){
1306     signal(SIGILL, sighandler);
1307     signal(SIGFPE, sighandler);
1308     signal(SIGSEGV, sighandler);
1309 #ifdef SIGBUS
1310     signal(SIGBUS, sighandler);
1311 #endif
1312     return func_ptr();
1313 }
1314 EOF
1315 }
1316
1317 check_type(){
1318     log check_type "$@"
1319     headers=$1
1320     type=$2
1321     shift 2
1322     disable_safe "$type"
1323     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1324 }
1325
1326 check_struct(){
1327     log check_struct "$@"
1328     headers=$1
1329     struct=$2
1330     member=$3
1331     shift 3
1332     disable_safe "${struct}_${member}"
1333     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1334         enable_safe "${struct}_${member}"
1335 }
1336
1337 check_builtin(){
1338     log check_builtin "$@"
1339     name=$1
1340     headers=$2
1341     builtin=$3
1342     shift 3
1343     disable "$name"
1344     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1345 }
1346
1347 check_compile_assert(){
1348     log check_compile_assert "$@"
1349     name=$1
1350     headers=$2
1351     condition=$3
1352     shift 3
1353     disable "$name"
1354     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1355 }
1356
1357 require(){
1358     log require "$@"
1359     name_version="$1"
1360     name="${1%% *}"
1361     headers="$2"
1362     func="$3"
1363     shift 3
1364     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1365 }
1366
1367 require_cpp(){
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1373 }
1374
1375 require_header(){
1376     log require "$@"
1377     header="$1"
1378     shift
1379     check_header "$header" "$@" || die "ERROR: $header header not found"
1380 }
1381
1382 require_cpp_condition(){
1383     log require "$@"
1384     header="$1"
1385     condition="$2"
1386     shift 2
1387     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1388 }
1389
1390 use_pkg_config(){
1391     log use_pkg_config "$@"
1392     pkg="$1"
1393     check_pkg_config "$@" || return 1
1394     add_cflags    $(get_safe "${pkg}_cflags")
1395     add_extralibs $(get_safe "${pkg}_extralibs")
1396 }
1397
1398 require_pkg_config(){
1399     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1400 }
1401
1402 hostcc_e(){
1403     eval printf '%s\\n' $HOSTCC_E
1404 }
1405
1406 hostcc_o(){
1407     eval printf '%s\\n' $HOSTCC_O
1408 }
1409
1410 check_host_cc(){
1411     log check_host_cc "$@"
1412     cat > $TMPC
1413     log_file $TMPC
1414     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1415 }
1416
1417 check_host_cpp(){
1418     log check_host_cpp "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1422 }
1423
1424 check_host_cppflags(){
1425     log check_host_cppflags "$@"
1426     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1427 #include <stdlib.h>
1428 EOF
1429 }
1430
1431 check_host_cflags(){
1432     log check_host_cflags "$@"
1433     set -- $($host_cflags_filter "$@")
1434     check_host_cc "$@" <<EOF && append host_cflags "$@"
1435 int x;
1436 EOF
1437 }
1438
1439 check_host_cpp_condition(){
1440     log check_host_cpp_condition "$@"
1441     header=$1
1442     condition=$2
1443     shift 2
1444     check_host_cpp "$@" <<EOF
1445 #include <$header>
1446 #if !($condition)
1447 #error "unsatisfied condition: $condition"
1448 #endif
1449 EOF
1450 }
1451
1452 cp_if_changed(){
1453     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1454     mkdir -p "$(dirname $2)"
1455     cp -f "$1" "$2"
1456 }
1457
1458 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1459 # system-dependent things.
1460
1461 AVCODEC_COMPONENTS="
1462     bsfs
1463     decoders
1464     encoders
1465     hwaccels
1466     parsers
1467 "
1468
1469 AVDEVICE_COMPONENTS="
1470     indevs
1471     outdevs
1472 "
1473
1474 AVFILTER_COMPONENTS="
1475     filters
1476 "
1477
1478 AVFORMAT_COMPONENTS="
1479     demuxers
1480     muxers
1481     protocols
1482 "
1483
1484 AVRESAMPLE_COMPONENTS=""
1485
1486 AVUTIL_COMPONENTS=""
1487
1488 COMPONENT_LIST="
1489     $AVCODEC_COMPONENTS
1490     $AVDEVICE_COMPONENTS
1491     $AVFILTER_COMPONENTS
1492     $AVFORMAT_COMPONENTS
1493     $AVRESAMPLE_COMPONENTS
1494     $AVUTIL_COMPONENTS
1495 "
1496
1497 EXAMPLE_LIST="
1498     avio_dir_cmd_example
1499     avio_reading_example
1500     decode_audio_example
1501     decode_video_example
1502     demuxing_decoding_example
1503     encode_audio_example
1504     encode_video_example
1505     extract_mvs_example
1506     filter_audio_example
1507     filtering_audio_example
1508     filtering_video_example
1509     http_multiclient_example
1510     hw_decode_example
1511     metadata_example
1512     muxing_example
1513     qsvdec_example
1514     remuxing_example
1515     resampling_audio_example
1516     scaling_video_example
1517     transcode_aac_example
1518     transcoding_example
1519 "
1520
1521 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1522     alsa
1523     appkit
1524     avfoundation
1525     bzlib
1526     coreimage
1527     iconv
1528     jack
1529     libxcb
1530     libxcb_shm
1531     libxcb_shape
1532     libxcb_xfixes
1533     lzma
1534     schannel
1535     sdl2
1536     securetransport
1537     sndio
1538     xlib
1539     zlib
1540 "
1541
1542 EXTERNAL_LIBRARY_GPL_LIST="
1543     avisynth
1544     frei0r
1545     libcdio
1546     librubberband
1547     libvidstab
1548     libx264
1549     libx265
1550     libxavs
1551     libxvid
1552 "
1553
1554 EXTERNAL_LIBRARY_NONFREE_LIST="
1555     decklink
1556     libndi_newtek
1557     libfdk_aac
1558     openssl
1559 "
1560
1561 EXTERNAL_LIBRARY_VERSION3_LIST="
1562     gmp
1563     libopencore_amrnb
1564     libopencore_amrwb
1565     libvo_amrwbenc
1566 "
1567
1568 EXTERNAL_LIBRARY_GPLV3_LIST="
1569     libsmbclient
1570 "
1571
1572 EXTERNAL_LIBRARY_LIST="
1573     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1574     $EXTERNAL_LIBRARY_GPL_LIST
1575     $EXTERNAL_LIBRARY_NONFREE_LIST
1576     $EXTERNAL_LIBRARY_VERSION3_LIST
1577     $EXTERNAL_LIBRARY_GPLV3_LIST
1578     chromaprint
1579     gcrypt
1580     gnutls
1581     jni
1582     ladspa
1583     libass
1584     libbluray
1585     libbs2b
1586     libcaca
1587     libcelt
1588     libdc1394
1589     libdrm
1590     libflite
1591     libfontconfig
1592     libfreetype
1593     libfribidi
1594     libgme
1595     libgsm
1596     libiec61883
1597     libilbc
1598     libkvazaar
1599     libmodplug
1600     libmp3lame
1601     libmysofa
1602     libopencv
1603     libopenh264
1604     libopenjpeg
1605     libopenmpt
1606     libopus
1607     libpulse
1608     librsvg
1609     librtmp
1610     libshine
1611     libsmbclient
1612     libsnappy
1613     libsoxr
1614     libspeex
1615     libssh
1616     libtesseract
1617     libtheora
1618     libtwolame
1619     libv4l2
1620     libvmaf
1621     libvorbis
1622     libvpx
1623     libwavpack
1624     libwebp
1625     libxml2
1626     libzimg
1627     libzmq
1628     libzvbi
1629     mediacodec
1630     openal
1631     opencl
1632     opengl
1633 "
1634
1635 HWACCEL_AUTODETECT_LIBRARY_LIST="
1636     audiotoolbox
1637     crystalhd
1638     cuda
1639     cuvid
1640     d3d11va
1641     dxva2
1642     nvenc
1643     vaapi
1644     vda
1645     vdpau
1646     videotoolbox
1647     v4l2_m2m
1648     xvmc
1649 "
1650
1651 HWACCEL_LIBRARY_NONFREE_LIST="
1652     cuda_sdk
1653     libnpp
1654 "
1655
1656 HWACCEL_LIBRARY_LIST="
1657     $HWACCEL_AUTODETECT_LIBRARY_LIST
1658     $HWACCEL_LIBRARY_NONFREE_LIST
1659     libmfx
1660     mmal
1661     omx
1662 "
1663
1664 DOCUMENT_LIST="
1665     doc
1666     htmlpages
1667     manpages
1668     podpages
1669     txtpages
1670 "
1671
1672 FEATURE_LIST="
1673     ftrapv
1674     gray
1675     hardcoded_tables
1676     omx_rpi
1677     runtime_cpudetect
1678     safe_bitstream_reader
1679     shared
1680     small
1681     static
1682     swscale_alpha
1683 "
1684
1685 LIBRARY_LIST="
1686     avcodec
1687     avdevice
1688     avfilter
1689     avformat
1690     avresample
1691     avutil
1692     postproc
1693     swresample
1694     swscale
1695 "
1696
1697 LICENSE_LIST="
1698     gpl
1699     nonfree
1700     version3
1701 "
1702
1703 PROGRAM_LIST="
1704     ffplay
1705     ffprobe
1706     ffserver
1707     ffmpeg
1708 "
1709
1710 SUBSYSTEM_LIST="
1711     dct
1712     dwt
1713     error_resilience
1714     faan
1715     fast_unaligned
1716     fft
1717     lsp
1718     lzo
1719     mdct
1720     pixelutils
1721     network
1722     rdft
1723 "
1724
1725 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1726 CONFIG_LIST="
1727     $DOCUMENT_LIST
1728     $EXAMPLE_LIST
1729     $EXTERNAL_LIBRARY_LIST
1730     $HWACCEL_LIBRARY_LIST
1731     $FEATURE_LIST
1732     $LICENSE_LIST
1733     $LIBRARY_LIST
1734     $PROGRAM_LIST
1735     $SUBSYSTEM_LIST
1736     autodetect
1737     fontconfig
1738     linux_perf
1739     memory_poisoning
1740     neon_clobber_test
1741     ossfuzz
1742     pic
1743     thumb
1744     valgrind_backtrace
1745     xmm_clobber_test
1746     $COMPONENT_LIST
1747 "
1748
1749 THREADS_LIST="
1750     pthreads
1751     os2threads
1752     w32threads
1753 "
1754
1755 ATOMICS_LIST="
1756     atomics_gcc
1757     atomics_suncc
1758     atomics_win32
1759 "
1760
1761 AUTODETECT_LIBS="
1762     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1763     $HWACCEL_AUTODETECT_LIBRARY_LIST
1764     $THREADS_LIST
1765 "
1766
1767 ARCH_LIST="
1768     aarch64
1769     alpha
1770     arm
1771     avr32
1772     avr32_ap
1773     avr32_uc
1774     bfin
1775     ia64
1776     m68k
1777     mips
1778     mips64
1779     parisc
1780     ppc
1781     ppc64
1782     s390
1783     sh4
1784     sparc
1785     sparc64
1786     tilegx
1787     tilepro
1788     tomi
1789     x86
1790     x86_32
1791     x86_64
1792 "
1793
1794 ARCH_EXT_LIST_ARM="
1795     armv5te
1796     armv6
1797     armv6t2
1798     armv8
1799     neon
1800     vfp
1801     vfpv3
1802     setend
1803 "
1804
1805 ARCH_EXT_LIST_MIPS="
1806     mipsfpu
1807     mips32r2
1808     mips32r5
1809     mips64r2
1810     mips32r6
1811     mips64r6
1812     mipsdsp
1813     mipsdspr2
1814     msa
1815 "
1816
1817 ARCH_EXT_LIST_LOONGSON="
1818     loongson2
1819     loongson3
1820     mmi
1821 "
1822
1823 ARCH_EXT_LIST_X86_SIMD="
1824     aesni
1825     amd3dnow
1826     amd3dnowext
1827     avx
1828     avx2
1829     fma3
1830     fma4
1831     mmx
1832     mmxext
1833     sse
1834     sse2
1835     sse3
1836     sse4
1837     sse42
1838     ssse3
1839     xop
1840 "
1841
1842 ARCH_EXT_LIST_PPC="
1843     altivec
1844     dcbzl
1845     ldbrx
1846     power8
1847     ppc4xx
1848     vsx
1849 "
1850
1851 ARCH_EXT_LIST_X86="
1852     $ARCH_EXT_LIST_X86_SIMD
1853     cpunop
1854     i686
1855 "
1856
1857 ARCH_EXT_LIST="
1858     $ARCH_EXT_LIST_ARM
1859     $ARCH_EXT_LIST_PPC
1860     $ARCH_EXT_LIST_X86
1861     $ARCH_EXT_LIST_MIPS
1862     $ARCH_EXT_LIST_LOONGSON
1863 "
1864
1865 ARCH_FEATURES="
1866     aligned_stack
1867     fast_64bit
1868     fast_clz
1869     fast_cmov
1870     local_aligned_8
1871     local_aligned_16
1872     local_aligned_32
1873     simd_align_16
1874     simd_align_32
1875 "
1876
1877 BUILTIN_LIST="
1878     atomic_cas_ptr
1879     machine_rw_barrier
1880     MemoryBarrier
1881     mm_empty
1882     rdtsc
1883     sarestart
1884     sem_timedwait
1885     sync_val_compare_and_swap
1886 "
1887 HAVE_LIST_CMDLINE="
1888     inline_asm
1889     symver
1890     x86asm
1891 "
1892
1893 HAVE_LIST_PUB="
1894     bigendian
1895     fast_unaligned
1896 "
1897
1898 HEADERS_LIST="
1899     altivec_h
1900     arpa_inet_h
1901     asm_types_h
1902     cdio_paranoia_h
1903     cdio_paranoia_paranoia_h
1904     cuda_h
1905     d3d11_h
1906     dispatch_dispatch_h
1907     dev_bktr_ioctl_bt848_h
1908     dev_bktr_ioctl_meteor_h
1909     dev_ic_bt8xx_h
1910     dev_video_bktr_ioctl_bt848_h
1911     dev_video_meteor_ioctl_meteor_h
1912     direct_h
1913     dirent_h
1914     dlfcn_h
1915     dxgidebug_h
1916     dxva_h
1917     ES2_gl_h
1918     gsm_h
1919     io_h
1920     mach_mach_time_h
1921     machine_ioctl_bt848_h
1922     machine_ioctl_meteor_h
1923     malloc_h
1924     opencv2_core_core_c_h
1925     openjpeg_2_2_openjpeg_h
1926     openjpeg_2_1_openjpeg_h
1927     openjpeg_2_0_openjpeg_h
1928     openjpeg_1_5_openjpeg_h
1929     OpenGL_gl3_h
1930     poll_h
1931     soundcard_h
1932     stdatomic_h
1933     sys_mman_h
1934     sys_param_h
1935     sys_resource_h
1936     sys_select_h
1937     sys_soundcard_h
1938     sys_time_h
1939     sys_un_h
1940     sys_videoio_h
1941     termios_h
1942     udplite_h
1943     unistd_h
1944     valgrind_valgrind_h
1945     windows_h
1946     winsock2_h
1947 "
1948
1949 INTRINSICS_LIST="
1950     intrinsics_neon
1951 "
1952
1953 COMPLEX_FUNCS="
1954     cabs
1955     cexp
1956 "
1957
1958 MATH_FUNCS="
1959     atanf
1960     atan2f
1961     cbrt
1962     cbrtf
1963     copysign
1964     cosf
1965     erf
1966     exp2
1967     exp2f
1968     expf
1969     hypot
1970     isfinite
1971     isinf
1972     isnan
1973     ldexpf
1974     llrint
1975     llrintf
1976     log2
1977     log2f
1978     log10f
1979     lrint
1980     lrintf
1981     powf
1982     rint
1983     round
1984     roundf
1985     sinf
1986     trunc
1987     truncf
1988 "
1989
1990 SYSTEM_FUNCS="
1991     access
1992     aligned_malloc
1993     arc4random
1994     clock_gettime
1995     closesocket
1996     CommandLineToArgvW
1997     CoTaskMemFree
1998     CryptGenRandom
1999     dlopen
2000     fcntl
2001     flt_lim
2002     fork
2003     getaddrinfo
2004     gethrtime
2005     getopt
2006     GetProcessAffinityMask
2007     GetProcessMemoryInfo
2008     GetProcessTimes
2009     getrusage
2010     GetSystemTimeAsFileTime
2011     gettimeofday
2012     glob
2013     glXGetProcAddress
2014     gmtime_r
2015     inet_aton
2016     isatty
2017     jack_port_get_latency_range
2018     kbhit
2019     LoadLibrary
2020     localtime_r
2021     lstat
2022     lzo1x_999_compress
2023     mach_absolute_time
2024     MapViewOfFile
2025     memalign
2026     mkstemp
2027     mmap
2028     mprotect
2029     nanosleep
2030     PeekNamedPipe
2031     posix_memalign
2032     pthread_cancel
2033     sched_getaffinity
2034     SetConsoleTextAttribute
2035     SetConsoleCtrlHandler
2036     setmode
2037     setrlimit
2038     Sleep
2039     strerror_r
2040     sysconf
2041     sysctl
2042     usleep
2043     UTGetOSTypeFromString
2044     VirtualAlloc
2045     wglGetProcAddress
2046 "
2047
2048 TOOLCHAIN_FEATURES="
2049     as_dn_directive
2050     as_fpu_directive
2051     as_func
2052     as_object_arch
2053     asm_mod_q
2054     attribute_may_alias
2055     attribute_packed
2056     blocks_extension
2057     ebp_available
2058     ebx_available
2059     gnu_as
2060     gnu_windres
2061     ibm_asm
2062     inline_asm_direct_symbol_refs
2063     inline_asm_labels
2064     inline_asm_nonlocal_labels
2065     pragma_deprecated
2066     rsync_contimeout
2067     symver_asm_label
2068     symver_gnu_asm
2069     vfp_args
2070     xform_asm
2071     xmm_clobbers
2072 "
2073
2074 TYPES_LIST="
2075     CONDITION_VARIABLE_Ptr
2076     socklen_t
2077     struct_addrinfo
2078     struct_group_source_req
2079     struct_ip_mreq_source
2080     struct_ipv6_mreq
2081     struct_msghdr_msg_flags
2082     struct_pollfd
2083     struct_rusage_ru_maxrss
2084     struct_sctp_event_subscribe
2085     struct_sockaddr_in6
2086     struct_sockaddr_sa_len
2087     struct_sockaddr_storage
2088     struct_stat_st_mtim_tv_nsec
2089     struct_v4l2_frmivalenum_discrete
2090 "
2091
2092 HAVE_LIST="
2093     $ARCH_EXT_LIST
2094     $(add_suffix _external $ARCH_EXT_LIST)
2095     $(add_suffix _inline   $ARCH_EXT_LIST)
2096     $ARCH_FEATURES
2097     $ATOMICS_LIST
2098     $BUILTIN_LIST
2099     $COMPLEX_FUNCS
2100     $HAVE_LIST_CMDLINE
2101     $HAVE_LIST_PUB
2102     $HEADERS_LIST
2103     $INTRINSICS_LIST
2104     $MATH_FUNCS
2105     $SYSTEM_FUNCS
2106     $THREADS_LIST
2107     $TOOLCHAIN_FEATURES
2108     $TYPES_LIST
2109     atomics_native
2110     dos_paths
2111     libc_msvcrt
2112     makeinfo
2113     makeinfo_html
2114     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2115     perl
2116     pod2man
2117     section_data_rel_ro
2118     texi2html
2119     threads
2120     uwp
2121     vaapi_drm
2122     vaapi_x11
2123     vdpau_x11
2124     winrt
2125 "
2126
2127 # options emitted with CONFIG_ prefix but not available on the command line
2128 CONFIG_EXTRA="
2129     aandcttables
2130     ac3dsp
2131     audio_frame_queue
2132     audiodsp
2133     blockdsp
2134     bswapdsp
2135     cabac
2136     dirac_parse
2137     dvprofile
2138     exif
2139     faandct
2140     faanidct
2141     fdctdsp
2142     flacdsp
2143     fmtconvert
2144     frame_thread_encoder
2145     g722dsp
2146     golomb
2147     gplv3
2148     h263dsp
2149     h264chroma
2150     h264dsp
2151     h264parse
2152     h264pred
2153     h264qpel
2154     hevcparse
2155     hpeldsp
2156     huffman
2157     huffyuvdsp
2158     huffyuvencdsp
2159     idctdsp
2160     iirfilter
2161     mdct15
2162     intrax8
2163     iso_media
2164     ividsp
2165     jpegtables
2166     lgplv3
2167     libx262
2168     llauddsp
2169     llviddsp
2170     llvidencdsp
2171     lpc
2172     lzf
2173     me_cmp
2174     mpeg_er
2175     mpegaudio
2176     mpegaudiodsp
2177     mpegaudioheader
2178     mpegvideo
2179     mpegvideoenc
2180     mss34dsp
2181     pixblockdsp
2182     qpeldsp
2183     qsv
2184     qsvdec
2185     qsvenc
2186     rangecoder
2187     riffdec
2188     riffenc
2189     rtpdec
2190     rtpenc_chain
2191     rv34dsp
2192     sinewin
2193     snappy
2194     srtp
2195     startcode
2196     texturedsp
2197     texturedspenc
2198     tpeldsp
2199     vaapi_encode
2200     vc1dsp
2201     videodsp
2202     vp3dsp
2203     vp56dsp
2204     vp8dsp
2205     wma_freqs
2206     wmv2dsp
2207 "
2208
2209 CMDLINE_SELECT="
2210     $ARCH_EXT_LIST
2211     $CONFIG_LIST
2212     $HAVE_LIST_CMDLINE
2213     $THREADS_LIST
2214     asm
2215     cross_compile
2216     debug
2217     extra_warnings
2218     logging
2219     lto
2220     optimizations
2221     rpath
2222     stripping
2223 "
2224
2225 PATHS_LIST="
2226     bindir
2227     datadir
2228     docdir
2229     incdir
2230     libdir
2231     mandir
2232     pkgconfigdir
2233     prefix
2234     shlibdir
2235     install_name_dir
2236 "
2237
2238 CMDLINE_SET="
2239     $PATHS_LIST
2240     ar
2241     arch
2242     as
2243     assert_level
2244     build_suffix
2245     cc
2246     objcc
2247     cpu
2248     cross_prefix
2249     custom_allocator
2250     cxx
2251     dep_cc
2252     doxygen
2253     env
2254     extra_version
2255     gas
2256     host_cc
2257     host_cflags
2258     host_extralibs
2259     host_ld
2260     host_ldflags
2261     host_os
2262     ignore_tests
2263     install
2264     ld
2265     ln_s
2266     logfile
2267     malloc_prefix
2268     nm
2269     optflags
2270     nvccflags
2271     pkg_config
2272     pkg_config_flags
2273     progs_suffix
2274     random_seed
2275     ranlib
2276     samples
2277     strip
2278     sws_max_filter_size
2279     sysinclude
2280     sysroot
2281     target_exec
2282     target_os
2283     target_path
2284     target_samples
2285     tempprefix
2286     toolchain
2287     valgrind
2288     x86asmexe
2289 "
2290
2291 CMDLINE_APPEND="
2292     extra_cflags
2293     extra_cxxflags
2294     extra_objcflags
2295     host_cppflags
2296 "
2297
2298 # code dependency declarations
2299
2300 # architecture extensions
2301
2302 armv5te_deps="arm"
2303 armv6_deps="arm"
2304 armv6t2_deps="arm"
2305 armv8_deps="aarch64"
2306 neon_deps_any="aarch64 arm"
2307 intrinsics_neon_deps="neon"
2308 vfp_deps_any="aarch64 arm"
2309 vfpv3_deps="vfp"
2310 setend_deps="arm"
2311
2312 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2313
2314 loongson2_deps="mips"
2315 loongson3_deps="mips"
2316 mipsfpu_deps="mips"
2317 mipsdsp_deps="mips"
2318 mipsdspr2_deps="mips"
2319 mips32r2_deps="mips"
2320 mips32r5_deps="mips"
2321 mips32r6_deps="mips"
2322 mips64r2_deps="mips"
2323 mips64r6_deps="mips"
2324 msa_deps="mipsfpu"
2325 mmi_deps="mips"
2326
2327 altivec_deps="ppc"
2328 dcbzl_deps="ppc"
2329 ldbrx_deps="ppc"
2330 ppc4xx_deps="ppc"
2331 vsx_deps="altivec"
2332 power8_deps="vsx"
2333
2334 cpunop_deps="i686"
2335 x86_64_select="i686"
2336 x86_64_suggest="fast_cmov"
2337
2338 amd3dnow_deps="mmx"
2339 amd3dnowext_deps="amd3dnow"
2340 i686_deps="x86"
2341 mmx_deps="x86"
2342 mmxext_deps="mmx"
2343 sse_deps="mmxext"
2344 sse2_deps="sse"
2345 sse3_deps="sse2"
2346 ssse3_deps="sse3"
2347 sse4_deps="ssse3"
2348 sse42_deps="sse4"
2349 aesni_deps="sse42"
2350 avx_deps="sse42"
2351 xop_deps="avx"
2352 fma3_deps="avx"
2353 fma4_deps="avx"
2354 avx2_deps="avx"
2355
2356 mmx_external_deps="x86asm"
2357 mmx_inline_deps="inline_asm"
2358 mmx_suggest="mmx_external mmx_inline"
2359
2360 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2361     eval dep=\$${ext}_deps
2362     eval ${ext}_external_deps='"${dep}_external"'
2363     eval ${ext}_inline_deps='"${dep}_inline"'
2364     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2365 done
2366
2367 aligned_stack_if_any="aarch64 ppc x86"
2368 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2369 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2370 fast_unaligned_if_any="aarch64 ppc x86"
2371 simd_align_16_if_any="altivec neon sse"
2372 simd_align_32_if_any="avx"
2373
2374 # system capabilities
2375 symver_if_any="symver_asm_label symver_gnu_asm"
2376 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2377
2378 # threading support
2379 atomics_gcc_if="sync_val_compare_and_swap"
2380 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2381 atomics_win32_if="MemoryBarrier"
2382 atomics_native_if_any="$ATOMICS_LIST"
2383 w32threads_deps="atomics_native"
2384 threads_if_any="$THREADS_LIST"
2385
2386 # subsystems
2387 dct_select="rdft"
2388 dirac_parse_select="golomb"
2389 error_resilience_select="me_cmp"
2390 faandct_deps="faan fdctdsp"
2391 faanidct_deps="faan idctdsp"
2392 h264dsp_select="startcode"
2393 hevcparse_select="golomb"
2394 frame_thread_encoder_deps="encoders threads"
2395 intrax8_select="blockdsp idctdsp"
2396 mdct_select="fft"
2397 mdct15_select="fft"
2398 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2399 mpeg_er_select="error_resilience"
2400 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2401 mpegaudiodsp_select="dct"
2402 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2403 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2404 vc1dsp_select="h264chroma qpeldsp startcode"
2405 rdft_select="fft"
2406
2407 # decoders / encoders
2408 aac_decoder_select="mdct15 mdct sinewin"
2409 aac_fixed_decoder_select="mdct sinewin"
2410 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2411 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2412 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2413 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2414 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2415 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2416 adpcm_g722_decoder_select="g722dsp"
2417 adpcm_g722_encoder_select="g722dsp"
2418 aic_decoder_select="golomb idctdsp"
2419 alac_encoder_select="lpc"
2420 als_decoder_select="bswapdsp"
2421 amrnb_decoder_select="lsp"
2422 amrwb_decoder_select="lsp"
2423 amv_decoder_select="sp5x_decoder exif"
2424 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2425 ape_decoder_select="bswapdsp llauddsp"
2426 apng_decoder_select="zlib"
2427 apng_encoder_select="llvidencdsp zlib"
2428 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2429 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2430 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2431 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2432 atrac1_decoder_select="mdct sinewin"
2433 atrac3_decoder_select="mdct"
2434 atrac3p_decoder_select="mdct sinewin"
2435 avrn_decoder_select="exif jpegtables"
2436 bink_decoder_select="blockdsp hpeldsp"
2437 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2438 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2439 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2440 clearvideo_decoder_select="idctdsp"
2441 cllc_decoder_select="bswapdsp"
2442 comfortnoise_encoder_select="lpc"
2443 cook_decoder_select="audiodsp mdct sinewin"
2444 cscd_decoder_select="lzo"
2445 cscd_decoder_suggest="zlib"
2446 dca_decoder_select="mdct"
2447 dds_decoder_select="texturedsp"
2448 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2449 dnxhd_decoder_select="blockdsp idctdsp"
2450 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2451 dolby_e_decoder_select="mdct"
2452 dvvideo_decoder_select="dvprofile idctdsp"
2453 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2454 dxa_decoder_select="zlib"
2455 dxv_decoder_select="lzf texturedsp"
2456 eac3_decoder_select="ac3_decoder"
2457 eac3_encoder_select="ac3_encoder"
2458 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2459 eatgq_decoder_select="aandcttables"
2460 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2461 exr_decoder_select="zlib"
2462 ffv1_decoder_select="rangecoder"
2463 ffv1_encoder_select="rangecoder"
2464 ffvhuff_decoder_select="huffyuv_decoder"
2465 ffvhuff_encoder_select="huffyuv_encoder"
2466 fic_decoder_select="golomb"
2467 flac_decoder_select="flacdsp"
2468 flac_encoder_select="bswapdsp flacdsp lpc"
2469 flashsv2_decoder_select="zlib"
2470 flashsv2_encoder_select="zlib"
2471 flashsv_decoder_select="zlib"
2472 flashsv_encoder_select="zlib"
2473 flv_decoder_select="h263_decoder"
2474 flv_encoder_select="h263_encoder"
2475 fourxm_decoder_select="blockdsp bswapdsp"
2476 fraps_decoder_select="bswapdsp huffman"
2477 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2478 g729_decoder_select="audiodsp"
2479 h261_decoder_select="mpegvideo"
2480 h261_encoder_select="aandcttables mpegvideoenc"
2481 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2482 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2483 h263i_decoder_select="h263_decoder"
2484 h263p_decoder_select="h263_decoder"
2485 h263p_encoder_select="h263_encoder"
2486 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2487 h264_decoder_suggest="error_resilience"
2488 hap_decoder_select="snappy texturedsp"
2489 hap_encoder_deps="libsnappy"
2490 hap_encoder_select="texturedspenc"
2491 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2492 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2493 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2494 iac_decoder_select="imc_decoder"
2495 imc_decoder_select="bswapdsp fft mdct sinewin"
2496 indeo3_decoder_select="hpeldsp"
2497 indeo4_decoder_select="ividsp"
2498 indeo5_decoder_select="ividsp"
2499 interplay_video_decoder_select="hpeldsp"
2500 jpegls_decoder_select="mjpeg_decoder"
2501 jv_decoder_select="blockdsp"
2502 lagarith_decoder_select="llviddsp"
2503 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2504 magicyuv_decoder_select="llviddsp"
2505 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2506 metasound_decoder_select="lsp mdct sinewin"
2507 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2508 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2509 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2510 mjpegb_decoder_select="mjpeg_decoder"
2511 mlp_decoder_select="mlp_parser"
2512 mlp_encoder_select="lpc"
2513 motionpixels_decoder_select="bswapdsp"
2514 mp1_decoder_select="mpegaudio"
2515 mp1float_decoder_select="mpegaudio"
2516 mp2_decoder_select="mpegaudio"
2517 mp2float_decoder_select="mpegaudio"
2518 mp3_decoder_select="mpegaudio"
2519 mp3adu_decoder_select="mpegaudio"
2520 mp3adufloat_decoder_select="mpegaudio"
2521 mp3float_decoder_select="mpegaudio"
2522 mp3on4_decoder_select="mpegaudio"
2523 mp3on4float_decoder_select="mpegaudio"
2524 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2525 mpc8_decoder_select="mpegaudiodsp"
2526 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2527 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2528 mpegvideo_decoder_select="mpegvideo"
2529 mpeg1video_decoder_select="mpegvideo"
2530 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2531 mpeg2video_decoder_select="mpegvideo"
2532 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2533 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2534 mpeg4_encoder_select="h263_encoder"
2535 msa1_decoder_select="mss34dsp"
2536 mscc_decoder_select="zlib"
2537 msmpeg4v1_decoder_select="h263_decoder"
2538 msmpeg4v2_decoder_select="h263_decoder"
2539 msmpeg4v2_encoder_select="h263_encoder"
2540 msmpeg4v3_decoder_select="h263_decoder"
2541 msmpeg4v3_encoder_select="h263_encoder"
2542 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2543 mts2_decoder_select="mss34dsp"
2544 mxpeg_decoder_select="mjpeg_decoder"
2545 nellymoser_decoder_select="mdct sinewin"
2546 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2547 nuv_decoder_select="idctdsp lzo"
2548 on2avc_decoder_select="mdct"
2549 opus_decoder_deps="swresample"
2550 opus_decoder_select="mdct15"
2551 opus_encoder_select="audio_frame_queue mdct15"
2552 png_decoder_select="zlib"
2553 png_encoder_select="llvidencdsp zlib"
2554 prores_decoder_select="blockdsp idctdsp"
2555 prores_encoder_select="fdctdsp"
2556 qcelp_decoder_select="lsp"
2557 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2558 ra_144_decoder_select="audiodsp"
2559 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2560 ralf_decoder_select="golomb"
2561 rawvideo_decoder_select="bswapdsp"
2562 rscc_decoder_select="zlib"
2563 rtjpeg_decoder_select="me_cmp"
2564 rv10_decoder_select="h263_decoder"
2565 rv10_encoder_select="h263_encoder"
2566 rv20_decoder_select="h263_decoder"
2567 rv20_encoder_select="h263_encoder"
2568 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2569 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2570 screenpresso_decoder_select="zlib"
2571 shorten_decoder_select="bswapdsp"
2572 sipr_decoder_select="lsp"
2573 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2574 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2575 sonic_decoder_select="golomb rangecoder"
2576 sonic_encoder_select="golomb rangecoder"
2577 sonic_ls_encoder_select="golomb rangecoder"
2578 sp5x_decoder_select="mjpeg_decoder"
2579 srgc_decoder_select="zlib"
2580 svq1_decoder_select="hpeldsp"
2581 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2582 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2583 svq3_decoder_suggest="zlib"
2584 tak_decoder_select="audiodsp"
2585 tdsc_decoder_select="zlib mjpeg_decoder"
2586 theora_decoder_select="vp3_decoder"
2587 thp_decoder_select="mjpeg_decoder"
2588 tiff_decoder_suggest="zlib lzma"
2589 tiff_encoder_suggest="zlib"
2590 truehd_decoder_select="mlp_parser"
2591 truehd_encoder_select="lpc"
2592 truemotion2_decoder_select="bswapdsp"
2593 truespeech_decoder_select="bswapdsp"
2594 tscc_decoder_select="zlib"
2595 twinvq_decoder_select="mdct lsp sinewin"
2596 txd_decoder_select="texturedsp"
2597 utvideo_decoder_select="bswapdsp llviddsp"
2598 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2599 vble_decoder_select="llviddsp"
2600 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2601 vc1_qsv_decoder_deps="libmfx"
2602 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2603 vc1image_decoder_select="vc1_decoder"
2604 vorbis_decoder_select="mdct"
2605 vorbis_encoder_select="mdct"
2606 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2607 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2608 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2609 vp6a_decoder_select="vp6_decoder"
2610 vp6f_decoder_select="vp6_decoder"
2611 vp7_decoder_select="h264pred videodsp vp8dsp"
2612 vp8_decoder_select="h264pred videodsp vp8dsp"
2613 vp9_decoder_select="videodsp vp9_parser"
2614 webp_decoder_select="vp8_decoder exif"
2615 wmalossless_decoder_select="llauddsp"
2616 wmapro_decoder_select="mdct sinewin wma_freqs"
2617 wmav1_decoder_select="mdct sinewin wma_freqs"
2618 wmav1_encoder_select="mdct sinewin wma_freqs"
2619 wmav2_decoder_select="mdct sinewin wma_freqs"
2620 wmav2_encoder_select="mdct sinewin wma_freqs"
2621 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2622 wmv1_decoder_select="h263_decoder"
2623 wmv1_encoder_select="h263_encoder"
2624 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2625 wmv2_encoder_select="h263_encoder wmv2dsp"
2626 wmv3_decoder_select="vc1_decoder"
2627 wmv3image_decoder_select="wmv3_decoder"
2628 xma1_decoder_select="wmapro_decoder"
2629 xma2_decoder_select="wmapro_decoder"
2630 zerocodec_decoder_select="zlib"
2631 zlib_decoder_select="zlib"
2632 zlib_encoder_select="zlib"
2633 zmbv_decoder_select="zlib"
2634 zmbv_encoder_select="zlib"
2635
2636 # hardware accelerators
2637 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2638 cuda_deps_any="dlopen LoadLibrary"
2639 cuvid_deps="cuda"
2640 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2641 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2642 dxva2_extralibs="-luser32"
2643 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2644 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2645 vda_deps="vda_framework pthreads"
2646 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2647 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2648 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2649 xvmc_deps="X11_extensions_XvMClib_h"
2650
2651 h263_vaapi_hwaccel_deps="vaapi"
2652 h263_vaapi_hwaccel_select="h263_decoder"
2653 h263_videotoolbox_hwaccel_deps="videotoolbox"
2654 h263_videotoolbox_hwaccel_select="h263_decoder"
2655 h264_cuvid_hwaccel_deps="cuda cuvid"
2656 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2657 h264_d3d11va_hwaccel_deps="d3d11va"
2658 h264_d3d11va_hwaccel_select="h264_decoder"
2659 h264_d3d11va2_hwaccel_deps="d3d11va"
2660 h264_d3d11va2_hwaccel_select="h264_decoder"
2661 h264_dxva2_hwaccel_deps="dxva2"
2662 h264_dxva2_hwaccel_select="h264_decoder"
2663 h264_mediacodec_hwaccel_deps="mediacodec"
2664 h264_mmal_hwaccel_deps="mmal"
2665 h264_qsv_hwaccel_deps="libmfx"
2666 h264_vaapi_hwaccel_deps="vaapi"
2667 h264_vaapi_hwaccel_select="h264_decoder"
2668 h264_vda_hwaccel_deps="vda"
2669 h264_vda_hwaccel_select="h264_decoder"
2670 h264_vda_old_hwaccel_deps="vda"
2671 h264_vda_old_hwaccel_select="h264_decoder"
2672 h264_vdpau_hwaccel_deps="vdpau"
2673 h264_vdpau_hwaccel_select="h264_decoder"
2674 h264_videotoolbox_hwaccel_deps="videotoolbox"
2675 h264_videotoolbox_hwaccel_select="h264_decoder"
2676 hevc_cuvid_hwaccel_deps="cuda cuvid"
2677 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2678 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2679 hevc_d3d11va_hwaccel_select="hevc_decoder"
2680 hevc_mediacodec_hwaccel_deps="mediacodec"
2681 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2683 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2684 hevc_dxva2_hwaccel_select="hevc_decoder"
2685 hevc_qsv_hwaccel_deps="libmfx"
2686 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2687 hevc_vaapi_hwaccel_select="hevc_decoder"
2688 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2689 hevc_vdpau_hwaccel_select="hevc_decoder"
2690 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2691 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2692 mpeg_xvmc_hwaccel_deps="xvmc"
2693 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2694 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2695 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2696 mpeg1_vdpau_hwaccel_deps="vdpau"
2697 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2698 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2699 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2700 mpeg1_xvmc_hwaccel_deps="xvmc"
2701 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2702 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2703 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2704 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2705 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2706 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2707 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2708 mpeg2_dxva2_hwaccel_deps="dxva2"
2709 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2711 mpeg2_mmal_hwaccel_deps="mmal"
2712 mpeg2_qsv_hwaccel_deps="libmfx"
2713 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2714 mpeg2_vaapi_hwaccel_deps="vaapi"
2715 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_vdpau_hwaccel_deps="vdpau"
2717 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2719 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_xvmc_hwaccel_deps="xvmc"
2721 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2722 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2723 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2724 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2725 mpeg4_mmal_hwaccel_deps="mmal"
2726 mpeg4_vaapi_hwaccel_deps="vaapi"
2727 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2728 mpeg4_vdpau_hwaccel_deps="vdpau"
2729 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2730 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2731 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2732 vc1_cuvid_hwaccel_deps="cuda cuvid"
2733 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2734 vc1_d3d11va_hwaccel_deps="d3d11va"
2735 vc1_d3d11va_hwaccel_select="vc1_decoder"
2736 vc1_d3d11va2_hwaccel_deps="d3d11va"
2737 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2738 vc1_dxva2_hwaccel_deps="dxva2"
2739 vc1_dxva2_hwaccel_select="vc1_decoder"
2740 vc1_mmal_hwaccel_deps="mmal"
2741 vc1_qsv_hwaccel_deps="libmfx"
2742 vc1_qsv_hwaccel_select="qsvdec_vc1"
2743 vc1_vaapi_hwaccel_deps="vaapi"
2744 vc1_vaapi_hwaccel_select="vc1_decoder"
2745 vc1_vdpau_hwaccel_deps="vdpau"
2746 vc1_vdpau_hwaccel_select="vc1_decoder"
2747 vp8_cuvid_hwaccel_deps="cuda cuvid"
2748 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2749 vp9_cuvid_hwaccel_deps="cuda cuvid"
2750 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2751 vp8_mediacodec_hwaccel_deps="mediacodec"
2752 vp8_qsv_hwaccel_deps="libmfx"
2753 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va_hwaccel_select="vp9_decoder"
2755 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2757 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2758 vp9_dxva2_hwaccel_select="vp9_decoder"
2759 vp9_mediacodec_hwaccel_deps="mediacodec"
2760 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2761 vp9_vaapi_hwaccel_select="vp9_decoder"
2762 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2763 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2764 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2765 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2766 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2767
2768 # hardware-accelerated codecs
2769 omx_deps="dlopen pthreads"
2770 omx_extralibs='$ldl'
2771 omx_rpi_select="omx"
2772 qsvdec_select="qsv"
2773 qsvenc_select="qsv"
2774 vaapi_encode_deps="vaapi"
2775 v4l2_m2m_deps_any="linux_videodev2_h"
2776
2777 hwupload_cuda_filter_deps="cuda"
2778 scale_npp_filter_deps="cuda libnpp"
2779 scale_cuda_filter_deps="cuda_sdk"
2780 thumbnail_cuda_filter_deps="cuda_sdk"
2781
2782 nvenc_deps="cuda"
2783 nvenc_deps_any="dlopen LoadLibrary"
2784 nvenc_encoder_deps="nvenc"
2785
2786 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2787 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2788 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2789 h264_cuvid_decoder_deps="cuda cuvid"
2790 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2791 h264_mediacodec_decoder_deps="mediacodec"
2792 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2793 h264_mmal_decoder_deps="mmal"
2794 h264_nvenc_encoder_deps="nvenc"
2795 h264_omx_encoder_deps="omx"
2796 h264_qsv_decoder_deps="libmfx"
2797 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2798 h264_qsv_encoder_deps="libmfx"
2799 h264_qsv_encoder_select="qsvenc"
2800 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2801 h264_vaapi_encoder_select="vaapi_encode golomb"
2802 h264_vda_decoder_deps="vda"
2803 h264_vda_decoder_select="h264_decoder"
2804 h264_vdpau_decoder_deps="vdpau"
2805 h264_vdpau_decoder_select="h264_decoder"
2806 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2808 hevc_cuvid_decoder_deps="cuda cuvid"
2809 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_mediacodec_decoder_deps="mediacodec"
2811 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2812 hevc_nvenc_encoder_deps="nvenc"
2813 hevc_qsv_decoder_deps="libmfx"
2814 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2815 hevc_qsv_encoder_deps="libmfx"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2818 hevc_vaapi_encoder_select="vaapi_encode golomb"
2819 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2821 mjpeg_cuvid_decoder_deps="cuda cuvid"
2822 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2823 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2824 mpeg1_cuvid_decoder_deps="cuda cuvid"
2825 mpeg1_vdpau_decoder_deps="vdpau"
2826 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuda cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_deps="libmfx"
2833 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2834 mpeg2_qsv_encoder_deps="libmfx"
2835 mpeg2_qsv_encoder_select="qsvenc"
2836 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2837 mpeg2_vaapi_encoder_select="vaapi_encode"
2838 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2839 mpeg4_crystalhd_decoder_select="crystalhd"
2840 mpeg4_cuvid_decoder_deps="cuda cuvid"
2841 mpeg4_mediacodec_decoder_deps="mediacodec"
2842 mpeg4_mmal_decoder_deps="mmal"
2843 mpeg4_omx_encoder_deps="omx"
2844 mpeg4_vdpau_decoder_deps="vdpau"
2845 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2846 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2847 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2848 mpeg_vdpau_decoder_deps="vdpau"
2849 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2850 msmpeg4_crystalhd_decoder_select="crystalhd"
2851 nvenc_h264_encoder_select="h264_nvenc_encoder"
2852 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2853 vc1_crystalhd_decoder_select="crystalhd"
2854 vc1_cuvid_decoder_deps="cuda cuvid"
2855 vc1_mmal_decoder_deps="mmal"
2856 vc1_vdpau_decoder_deps="vdpau"
2857 vc1_vdpau_decoder_select="vc1_decoder"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_deps="libmfx"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2863 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2864 vp8_vaapi_encoder_select="vaapi_encode"
2865 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp9_cuvid_decoder_deps="cuda cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2870 vp9_vaapi_encoder_select="vaapi_encode"
2871 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2872 wmv3_crystalhd_decoder_select="crystalhd"
2873 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2874
2875 # parsers
2876 h264_parser_select="golomb h264dsp h264parse"
2877 hevc_parser_select="hevcparse"
2878 mpegaudio_parser_select="mpegaudioheader"
2879 mpegvideo_parser_select="mpegvideo"
2880 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2881 vc1_parser_select="vc1dsp"
2882
2883 # bitstream_filters
2884 mjpeg2jpeg_bsf_select="jpegtables"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="dlopen LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2922 libcelt_decoder_deps="libcelt"
2923 libfdk_aac_decoder_deps="libfdk_aac"
2924 libfdk_aac_encoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_select="audio_frame_queue"
2926 libgme_demuxer_deps="libgme"
2927 libgsm_decoder_deps="libgsm"
2928 libgsm_encoder_deps="libgsm"
2929 libgsm_ms_decoder_deps="libgsm"
2930 libgsm_ms_encoder_deps="libgsm"
2931 libilbc_decoder_deps="libilbc"
2932 libilbc_encoder_deps="libilbc"
2933 libkvazaar_encoder_deps="libkvazaar"
2934 libmodplug_demuxer_deps="libmodplug"
2935 libmp3lame_encoder_deps="libmp3lame"
2936 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2937 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2938 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_select="audio_frame_queue"
2940 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2941 libopenh264_decoder_deps="libopenh264"
2942 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2943 libopenh264_encoder_deps="libopenh264"
2944 libopenjpeg_decoder_deps="libopenjpeg"
2945 libopenjpeg_encoder_deps="libopenjpeg"
2946 libopenmpt_demuxer_deps="libopenmpt"
2947 libopus_decoder_deps="libopus"
2948 libopus_encoder_deps="libopus"
2949 libopus_encoder_select="audio_frame_queue"
2950 librsvg_decoder_deps="librsvg"
2951 libshine_encoder_deps="libshine"
2952 libshine_encoder_select="audio_frame_queue"
2953 libspeex_decoder_deps="libspeex"
2954 libspeex_encoder_deps="libspeex"
2955 libspeex_encoder_select="audio_frame_queue"
2956 libtheora_encoder_deps="libtheora"
2957 libtwolame_encoder_deps="libtwolame"
2958 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2959 libvorbis_decoder_deps="libvorbis"
2960 libvorbis_encoder_deps="libvorbis"
2961 libvorbis_encoder_select="audio_frame_queue"
2962 libvpx_vp8_decoder_deps="libvpx"
2963 libvpx_vp8_encoder_deps="libvpx"
2964 libvpx_vp9_decoder_deps="libvpx"
2965 libvpx_vp9_encoder_deps="libvpx"
2966 libwavpack_encoder_deps="libwavpack"
2967 libwavpack_encoder_select="audio_frame_queue"
2968 libwebp_encoder_deps="libwebp"
2969 libwebp_anim_encoder_deps="libwebp"
2970 libx262_encoder_deps="libx262"
2971 libx264_encoder_deps="libx264"
2972 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2973 libx264rgb_encoder_select="libx264_encoder"
2974 libx265_encoder_deps="libx265"
2975 libxavs_encoder_deps="libxavs"
2976 libxvid_encoder_deps="libxvid"
2977 libzvbi_teletext_decoder_deps="libzvbi"
2978 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2979 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2980 videotoolbox_encoder_suggest="vda_framework"
2981
2982 # demuxers / muxers
2983 ac3_demuxer_select="ac3_parser"
2984 aiff_muxer_select="iso_media"
2985 asf_demuxer_select="riffdec"
2986 asf_o_demuxer_select="riffdec"
2987 asf_muxer_select="riffenc"
2988 asf_stream_muxer_select="asf_muxer"
2989 avi_demuxer_select="iso_media riffdec exif"
2990 avi_muxer_select="riffenc"
2991 caf_demuxer_select="iso_media riffdec"
2992 caf_muxer_select="iso_media"
2993 dash_muxer_select="mp4_muxer"
2994 dash_demuxer_deps="libxml2"
2995 dirac_demuxer_select="dirac_parser"
2996 dts_demuxer_select="dca_parser"
2997 dtshd_demuxer_select="dca_parser"
2998 dv_demuxer_select="dvprofile"
2999 dv_muxer_select="dvprofile"
3000 dxa_demuxer_select="riffdec"
3001 eac3_demuxer_select="ac3_parser"
3002 f4v_muxer_select="mov_muxer"
3003 fifo_muxer_deps="threads"
3004 flac_demuxer_select="flac_parser"
3005 hds_muxer_select="flv_muxer"
3006 hls_muxer_select="mpegts_muxer"
3007 image2_alias_pix_demuxer_select="image2_demuxer"
3008 image2_brender_pix_demuxer_select="image2_demuxer"
3009 ipod_muxer_select="mov_muxer"
3010 ismv_muxer_select="mov_muxer"
3011 matroska_audio_muxer_select="matroska_muxer"
3012 matroska_demuxer_select="iso_media riffdec"
3013 matroska_demuxer_suggest="bzlib lzo zlib"
3014 matroska_muxer_select="iso_media riffenc"
3015 mmf_muxer_select="riffenc"
3016 mov_demuxer_select="iso_media riffdec"
3017 mov_demuxer_suggest="zlib"
3018 mov_muxer_select="iso_media riffenc rtpenc_chain"
3019 mp3_demuxer_select="mpegaudio_parser"
3020 mp3_muxer_select="mpegaudioheader"
3021 mp4_muxer_select="mov_muxer"
3022 mpegts_demuxer_select="iso_media"
3023 mpegts_muxer_select="adts_muxer latm_muxer"
3024 mpegtsraw_demuxer_select="mpegts_demuxer"
3025 mxf_d10_muxer_select="mxf_muxer"
3026 mxf_opatom_muxer_select="mxf_muxer"
3027 nut_muxer_select="riffenc"
3028 nuv_demuxer_select="riffdec"
3029 oga_muxer_select="ogg_muxer"
3030 ogg_demuxer_select="dirac_parse"
3031 ogv_muxer_select="ogg_muxer"
3032 opus_muxer_select="ogg_muxer"
3033 psp_muxer_select="mov_muxer"
3034 rtp_demuxer_select="sdp_demuxer"
3035 rtp_muxer_select="golomb"
3036 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3037 rtsp_demuxer_select="http_protocol rtpdec"
3038 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3039 sap_demuxer_select="sdp_demuxer"
3040 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3041 sdp_demuxer_select="rtpdec"
3042 smoothstreaming_muxer_select="ismv_muxer"
3043 spdif_muxer_select="aac_parser"
3044 spx_muxer_select="ogg_muxer"
3045 swf_demuxer_suggest="zlib"
3046 tak_demuxer_select="tak_parser"
3047 tg2_muxer_select="mov_muxer"
3048 tgp_muxer_select="mov_muxer"
3049 vobsub_demuxer_select="mpegps_demuxer"
3050 w64_demuxer_select="wav_demuxer"
3051 w64_muxer_select="wav_muxer"
3052 wav_demuxer_select="riffdec"
3053 wav_muxer_select="riffenc"
3054 webm_muxer_select="iso_media riffenc"
3055 webm_dash_manifest_demuxer_select="matroska_demuxer"
3056 wtv_demuxer_select="mpegts_demuxer riffdec"
3057 wtv_muxer_select="mpegts_muxer riffenc"
3058 xmv_demuxer_select="riffdec"
3059 xwma_demuxer_select="riffdec"
3060
3061 # indevs / outdevs
3062 alsa_indev_deps="alsa"
3063 alsa_outdev_deps="alsa"
3064 avfoundation_indev_deps="avfoundation pthreads"
3065 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3066 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3067 caca_outdev_deps="libcaca"
3068 decklink_indev_deps="decklink threads"
3069 decklink_indev_extralibs="-lstdc++"
3070 decklink_outdev_deps="decklink threads"
3071 decklink_outdev_extralibs="-lstdc++"
3072 libndi_newtek_indev_deps="libndi_newtek"
3073 libndi_newtek_indev_extralibs="-lndi"
3074 libndi_newtek_outdev_deps="libndi_newtek"
3075 libndi_newtek_outdev_extralibs="-lndi"
3076 dshow_indev_deps="IBaseFilter"
3077 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3078 dv1394_indev_deps="dv1394"
3079 dv1394_indev_select="dv_demuxer"
3080 fbdev_indev_deps="linux_fb_h"
3081 fbdev_outdev_deps="linux_fb_h"
3082 gdigrab_indev_deps="CreateDIBSection"
3083 gdigrab_indev_extralibs="-lgdi32"
3084 gdigrab_indev_select="bmp_decoder"
3085 iec61883_indev_deps="libiec61883"
3086 jack_indev_deps="jack"
3087 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3088 kmsgrab_indev_deps="libdrm"
3089 lavfi_indev_deps="avfilter"
3090 libcdio_indev_deps="libcdio"
3091 libdc1394_indev_deps="libdc1394"
3092 libv4l2_indev_deps="libv4l2"
3093 openal_indev_deps="openal"
3094 opengl_outdev_deps="opengl"
3095 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3096 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3097 pulse_indev_deps="libpulse"
3098 pulse_outdev_deps="libpulse"
3099 sdl2_outdev_deps="sdl2"
3100 sndio_indev_deps="sndio"
3101 sndio_outdev_deps="sndio"
3102 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3103 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3104 vfwcap_indev_deps="vfw32 vfwcap_defines"
3105 xcbgrab_indev_deps="libxcb"
3106 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3107 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3108 xv_outdev_extralibs="-lXv -lX11 -lXext"
3109
3110 # protocols
3111 async_protocol_deps="threads"
3112 bluray_protocol_deps="libbluray"
3113 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3114 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3115 ffrtmpcrypt_protocol_select="tcp_protocol"
3116 ffrtmphttp_protocol_deps="!librtmp_protocol"
3117 ffrtmphttp_protocol_select="http_protocol"
3118 ftp_protocol_select="tcp_protocol"
3119 gopher_protocol_select="network"
3120 http_protocol_select="tcp_protocol"
3121 httpproxy_protocol_select="tcp_protocol"
3122 https_protocol_select="tls_protocol"
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_deps="!librtmp_protocol"
3134 rtmp_protocol_select="tcp_protocol"
3135 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3136 rtmps_protocol_deps="!librtmp_protocol"
3137 rtmps_protocol_select="tls_protocol"
3138 rtmpt_protocol_select="ffrtmphttp_protocol"
3139 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3140 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3141 rtp_protocol_select="udp_protocol"
3142 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3143 sctp_protocol_select="network"
3144 srtp_protocol_select="rtp_protocol srtp"
3145 tcp_protocol_select="network"
3146 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3147 tls_gnutls_protocol_select="tcp_protocol"
3148 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3149 tls_openssl_protocol_select="tcp_protocol"
3150 tls_schannel_protocol_deps="schannel"
3151 tls_schannel_protocol_select="tcp_protocol"
3152 tls_securetransport_protocol_deps="securetransport"
3153 tls_securetransport_protocol_select="tcp_protocol"
3154 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3155 udp_protocol_select="network"
3156 udplite_protocol_select="network"
3157 unix_protocol_deps="sys_un_h"
3158 unix_protocol_select="network"
3159
3160 # filters
3161 afftfilt_filter_deps="avcodec"
3162 afftfilt_filter_select="fft"
3163 afir_filter_deps="avcodec"
3164 afir_filter_select="fft"
3165 amovie_filter_deps="avcodec avformat"
3166 aresample_filter_deps="swresample"
3167 ass_filter_deps="libass"
3168 atempo_filter_deps="avcodec"
3169 atempo_filter_select="rdft"
3170 azmq_filter_deps="libzmq"
3171 blackframe_filter_deps="gpl"
3172 boxblur_filter_deps="gpl"
3173 bs2b_filter_deps="libbs2b"
3174 colormatrix_filter_deps="gpl"
3175 coreimage_filter_deps="coreimage appkit"
3176 coreimage_filter_extralibs="-framework OpenGL"
3177 coreimagesrc_filter_deps="coreimage appkit"
3178 coreimagesrc_filter_extralibs="-framework OpenGL"
3179 cover_rect_filter_deps="avcodec avformat gpl"
3180 cropdetect_filter_deps="gpl"
3181 deinterlace_qsv_filter_deps="libmfx"
3182 deinterlace_vaapi_filter_deps="vaapi"
3183 delogo_filter_deps="gpl"
3184 deshake_filter_select="pixelutils"
3185 drawtext_filter_deps="libfreetype"
3186 elbg_filter_deps="avcodec"
3187 eq_filter_deps="gpl"
3188 fftfilt_filter_deps="avcodec"
3189 fftfilt_filter_select="rdft"
3190 find_rect_filter_deps="avcodec avformat gpl"
3191 firequalizer_filter_deps="avcodec"
3192 firequalizer_filter_select="rdft"
3193 flite_filter_deps="libflite"
3194 framerate_filter_select="pixelutils"
3195 frei0r_filter_deps="frei0r dlopen"
3196 frei0r_src_filter_deps="frei0r dlopen"
3197 fspp_filter_deps="gpl"
3198 geq_filter_deps="gpl"
3199 histeq_filter_deps="gpl"
3200 hqdn3d_filter_deps="gpl"
3201 interlace_filter_deps="gpl"
3202 kerndeint_filter_deps="gpl"
3203 ladspa_filter_deps="ladspa dlopen"
3204 mcdeint_filter_deps="avcodec gpl"
3205 movie_filter_deps="avcodec avformat"
3206 mpdecimate_filter_deps="gpl"
3207 mpdecimate_filter_select="pixelutils"
3208 mptestsrc_filter_deps="gpl"
3209 negate_filter_deps="lut_filter"
3210 nnedi_filter_deps="gpl"
3211 ocr_filter_deps="libtesseract"
3212 ocv_filter_deps="libopencv"
3213 owdenoise_filter_deps="gpl"
3214 pan_filter_deps="swresample"
3215 perspective_filter_deps="gpl"
3216 phase_filter_deps="gpl"
3217 pp7_filter_deps="gpl"
3218 pp_filter_deps="gpl postproc"
3219 pullup_filter_deps="gpl"
3220 removelogo_filter_deps="avcodec avformat swscale"
3221 repeatfields_filter_deps="gpl"
3222 resample_filter_deps="avresample"
3223 rubberband_filter_deps="librubberband"
3224 sab_filter_deps="gpl swscale"
3225 scale2ref_filter_deps="swscale"
3226 scale_filter_deps="swscale"
3227 scale_qsv_filter_deps="libmfx"
3228 select_filter_select="pixelutils"
3229 showcqt_filter_deps="avcodec avformat swscale"
3230 showcqt_filter_select="fft"
3231 showfreqs_filter_deps="avcodec"
3232 showfreqs_filter_select="fft"
3233 showspectrum_filter_deps="avcodec"
3234 showspectrum_filter_select="fft"
3235 showspectrumpic_filter_deps="avcodec"
3236 showspectrumpic_filter_select="fft"
3237 signature_filter_deps="gpl avcodec avformat"
3238 smartblur_filter_deps="gpl swscale"
3239 sofalizer_filter_deps="libmysofa avcodec"
3240 sofalizer_filter_select="fft"
3241 spectrumsynth_filter_deps="avcodec"
3242 spectrumsynth_filter_select="fft"
3243 spp_filter_deps="gpl avcodec"
3244 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3245 stereo3d_filter_deps="gpl"
3246 subtitles_filter_deps="avformat avcodec libass"
3247 super2xsai_filter_deps="gpl"
3248 pixfmts_super2xsai_test_deps="super2xsai_filter"
3249 tinterlace_filter_deps="gpl"
3250 tinterlace_merge_test_deps="tinterlace_filter"
3251 tinterlace_pad_test_deps="tinterlace_filter"
3252 tonemap_filter_deps="const_nan"
3253 uspp_filter_deps="gpl avcodec"
3254 vaguedenoiser_filter_deps="gpl"
3255 vidstabdetect_filter_deps="libvidstab"
3256 vidstabtransform_filter_deps="libvidstab"
3257 libvmaf_filter_deps="libvmaf"
3258 zmq_filter_deps="libzmq"
3259 zoompan_filter_deps="swscale"
3260 zscale_filter_deps="libzimg const_nan"
3261 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3262
3263 # examples
3264 avio_dir_cmd_deps="avformat avutil"
3265 avio_reading_deps="avformat avcodec avutil"
3266 decode_audio_example_deps="avcodec avutil"
3267 decode_video_example_deps="avcodec avutil"
3268 demuxing_decoding_example_deps="avcodec avformat avutil"
3269 encode_audio_example_deps="avcodec avutil"
3270 encode_video_example_deps="avcodec avutil"
3271 extract_mvs_example_deps="avcodec avformat avutil"
3272 filter_audio_example_deps="avfilter avutil"
3273 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3274 filtering_video_example_deps="avfilter avcodec avformat avutil"
3275 http_multiclient_example_deps="avformat avutil fork"
3276 hw_decode_example_deps="avcodec avformat avutil"
3277 metadata_example_deps="avformat avutil"
3278 muxing_example_deps="avcodec avformat avutil swscale"
3279 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3280 remuxing_example_deps="avcodec avformat avutil"
3281 resampling_audio_example_deps="avutil swresample"
3282 scaling_video_example_deps="avutil swscale"
3283 transcode_aac_example_deps="avcodec avformat swresample"
3284 transcoding_example_deps="avfilter avcodec avformat avutil"
3285
3286 # libraries, in linking order
3287 avcodec_deps="avutil"
3288 avcodec_select="null_bsf"
3289 avdevice_deps="avformat avcodec avutil"
3290 avfilter_deps="avutil"
3291 avformat_deps="avcodec avutil"
3292 avformat_suggest="network"
3293 avresample_deps="avutil"
3294 postproc_deps="avutil gpl"
3295 swresample_deps="avutil"
3296 swscale_deps="avutil"
3297
3298 # programs
3299 ffmpeg_deps="avcodec avfilter avformat swresample"
3300 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3301                null_filter
3302                trim_filter"
3303 ffplay_deps="avcodec avformat swscale swresample sdl2"
3304 ffplay_extralibs='$sdl2_extralibs'
3305 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3306 ffprobe_deps="avcodec avformat"
3307 ffserver_deps="avformat fork sarestart"
3308 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3309
3310 # documentation
3311 podpages_deps="perl"
3312 manpages_deps="perl pod2man"
3313 htmlpages_deps="perl"
3314 htmlpages_deps_any="makeinfo_html texi2html"
3315 txtpages_deps="perl makeinfo"
3316 doc_deps_any="manpages htmlpages podpages txtpages"
3317
3318 # default parameters
3319
3320 logfile="ffbuild/config.log"
3321
3322 # installation paths
3323 prefix_default="/usr/local"
3324 bindir_default='${prefix}/bin'
3325 datadir_default='${prefix}/share/ffmpeg'
3326 docdir_default='${prefix}/share/doc/ffmpeg'
3327 incdir_default='${prefix}/include'
3328 libdir_default='${prefix}/lib'
3329 mandir_default='${prefix}/share/man'
3330
3331 # toolchain
3332 ar_default="ar"
3333 cc_default="gcc"
3334 cxx_default="g++"
3335 host_cc_default="gcc"
3336 doxygen_default="doxygen"
3337 install="install"
3338 ln_s_default="ln -s -f"
3339 nm_default="nm -g"
3340 pkg_config_default=pkg-config
3341 ranlib_default="ranlib"
3342 strip_default="strip"
3343 version_script='--version-script'
3344 x86asmexe_default="nasm"
3345 windres_default="windres"
3346 nvcc_default="nvcc"
3347 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3348
3349 # OS
3350 target_os_default=$(tolower $(uname -s))
3351 host_os=$target_os_default
3352
3353 # machine
3354 if test "$target_os_default" = aix; then
3355     arch_default=$(uname -p)
3356     strip_default="strip -X32_64"
3357 else
3358     arch_default=$(uname -m)
3359 fi
3360 cpu="generic"
3361 intrinsics="none"
3362
3363 # configurable options
3364 enable $PROGRAM_LIST
3365 enable $DOCUMENT_LIST
3366 enable $EXAMPLE_LIST
3367 enable $(filter_out avresample $LIBRARY_LIST)
3368 enable stripping
3369
3370 enable asm
3371 enable debug
3372 enable doc
3373 enable faan faandct faanidct
3374 enable optimizations
3375 enable runtime_cpudetect
3376 enable safe_bitstream_reader
3377 enable static
3378 enable swscale_alpha
3379 enable valgrind_backtrace
3380
3381 sws_max_filter_size_default=256
3382 set_default sws_max_filter_size
3383
3384 # build settings
3385 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3386 LIBPREF="lib"
3387 LIBSUF=".a"
3388 FULLNAME='$(NAME)$(BUILDSUF)'
3389 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3390 SLIBPREF="lib"
3391 SLIBSUF=".so"
3392 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3393 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3394 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3395 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3396 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3397 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3398 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3399
3400 asflags_filter=echo
3401 cflags_filter=echo
3402 ldflags_filter=echo
3403
3404 AS_C='-c'
3405 AS_O='-o $@'
3406 CC_C='-c'
3407 CC_E='-E -o $@'
3408 CC_O='-o $@'
3409 CXX_C='-c'
3410 CXX_O='-o $@'
3411 OBJCC_C='-c'
3412 OBJCC_E='-E -o $@'
3413 OBJCC_O='-o $@'
3414 X86ASM_O='-o $@'
3415 LD_O='-o $@'
3416 LD_LIB='-l%'
3417 LD_PATH='-L'
3418 HOSTCC_C='-c'
3419 HOSTCC_E='-E -o $@'
3420 HOSTCC_O='-o $@'
3421 HOSTLD_O='-o $@'
3422 NVCC_C='-c'
3423 NVCC_O='-o $@'
3424
3425 host_extralibs='-lm'
3426 host_cflags_filter=echo
3427 host_ldflags_filter=echo
3428
3429 target_path='$(CURDIR)'
3430
3431 # since the object filename is not given with the -MM flag, the compiler
3432 # is only able to print the basename, and we must add the path ourselves
3433 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3434 DEPFLAGS='-MM'
3435
3436 mkdir -p ffbuild
3437
3438 # find source path
3439 if test -f configure; then
3440     source_path=.
3441 else
3442     source_path=$(cd $(dirname "$0"); pwd)
3443     case "$source_path" in
3444         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3445     esac
3446     test -e "$source_path/config.h" &&
3447         die "Out of tree builds are impossible with config.h in source dir."
3448 fi
3449
3450 for v in "$@"; do
3451     r=${v#*=}
3452     l=${v%"$r"}
3453     r=$(sh_quote "$r")
3454     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3455 done
3456
3457 find_things(){
3458     thing=$1
3459     pattern=$2
3460     file=$source_path/$3
3461     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3462 }
3463
3464 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3465 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3466 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3467 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3468 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3469 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3470 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3471 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3472 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3473
3474 find_things_extern(){
3475     thing=$1
3476     pattern=$2
3477     file=$source_path/$3
3478     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3479 }
3480
3481 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3482 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3483
3484 ALL_COMPONENTS="
3485     $BSF_LIST
3486     $DECODER_LIST
3487     $DEMUXER_LIST
3488     $ENCODER_LIST
3489     $FILTER_LIST
3490     $HWACCEL_LIST
3491     $INDEV_LIST
3492     $MUXER_LIST
3493     $OUTDEV_LIST
3494     $PARSER_LIST
3495     $PROTOCOL_LIST
3496 "
3497
3498 for n in $COMPONENT_LIST; do
3499     v=$(toupper ${n%s})_LIST
3500     eval enable \$$v
3501     eval ${n}_if_any="\$$v"
3502 done
3503
3504 enable $ARCH_EXT_LIST
3505
3506 die_unknown(){
3507     echo "Unknown option \"$1\"."
3508     echo "See $0 --help for available options."
3509     exit 1
3510 }
3511
3512 print_in_columns() {
3513     cols=$(expr $ncols / 24)
3514     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3515 }
3516
3517 show_list() {
3518     suffix=_$1
3519     shift
3520     echo $* | sed s/$suffix//g | print_in_columns
3521     exit 0
3522 }
3523
3524 rand_list(){
3525     IFS=', '
3526     set -- $*
3527     unset IFS
3528     for thing; do
3529         comp=${thing%:*}
3530         prob=${thing#$comp}
3531         prob=${prob#:}
3532         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3533         echo "prob ${prob:-0.5}"
3534         printf '%s\n' $comp
3535     done
3536 }
3537
3538 do_random(){
3539     action=$1
3540     shift
3541     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3542     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3543 }
3544
3545 for opt do
3546     optval="${opt#*=}"
3547     case "$opt" in
3548         --extra-ldflags=*)
3549             add_ldflags $optval
3550         ;;
3551         --extra-ldexeflags=*)
3552             add_ldexeflags $optval
3553         ;;
3554         --extra-ldlibflags=*)
3555             add_ldlibflags $optval
3556         ;;
3557         --extra-libs=*)
3558             add_extralibs $optval
3559         ;;
3560         --disable-devices)
3561             disable $INDEV_LIST $OUTDEV_LIST
3562         ;;
3563         --enable-debug=*)
3564             debuglevel="$optval"
3565         ;;
3566         --disable-programs)
3567             disable $PROGRAM_LIST
3568         ;;
3569         --disable-everything)
3570             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3571         ;;
3572         --disable-all)
3573             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3574             disable $LIBRARY_LIST $PROGRAM_LIST doc
3575             enable avutil
3576         ;;
3577         --enable-random|--disable-random)
3578             action=${opt%%-random}
3579             do_random ${action#--} $COMPONENT_LIST
3580         ;;
3581         --enable-random=*|--disable-random=*)
3582             action=${opt%%-random=*}
3583             do_random ${action#--} $optval
3584         ;;
3585         --enable-sdl)
3586             enable sdl2
3587         ;;
3588         --enable-*=*|--disable-*=*)
3589             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3590             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3591             eval list=\$$(toupper $thing)_LIST
3592             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3593             list=$(filter "$name" $list)
3594             [ "$list" = "" ] && warn "Option $opt did not match anything"
3595             $action $list
3596         ;;
3597         --enable-yasm|--disable-yasm)
3598             warn "The ${opt} option is only provided for compatibility and will be\n"\
3599                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3600             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3601         ;;
3602         --yasmexe=*)
3603             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3604                  "removed in the future. Use --x86asmexe instead."
3605             x86asmexe="$optval"
3606         ;;
3607         --enable-?*|--disable-?*)
3608             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3609             if is_in $option $COMPONENT_LIST; then
3610                 test $action = disable && action=unset
3611                 eval $action \$$(toupper ${option%s})_LIST
3612             elif is_in $option $CMDLINE_SELECT; then
3613                 $action $option
3614             else
3615                 die_unknown $opt
3616             fi
3617         ;;
3618         --list-*)
3619             NAME="${opt#--list-}"
3620             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3621             NAME=${NAME%s}
3622             eval show_list $NAME \$$(toupper $NAME)_LIST
3623         ;;
3624         --help|-h) show_help
3625         ;;
3626         --quiet|-q) quiet=yes
3627         ;;
3628         --fatal-warnings) enable fatal_warnings
3629         ;;
3630         --libfuzzer=*)
3631             libfuzzer_path="$optval"
3632         ;;
3633         *)
3634             optname="${opt%%=*}"
3635             optname="${optname#--}"
3636             optname=$(echo "$optname" | sed 's/-/_/g')
3637             if is_in $optname $CMDLINE_SET; then
3638                 eval $optname='$optval'
3639             elif is_in $optname $CMDLINE_APPEND; then
3640                 append $optname "$optval"
3641             else
3642                 die_unknown $opt
3643             fi
3644         ;;
3645     esac
3646 done
3647
3648 for e in $env; do
3649     eval "export $e"
3650 done
3651
3652 if disabled autodetect; then
3653
3654     # Unless iconv is explicitely disabled by the user, we still want to probe
3655     # for the iconv from the libc.
3656     disabled iconv || enable libc_iconv
3657
3658     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3659     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3660 fi
3661 # Mark specifically enabled, but normally autodetected libraries as requested.
3662 for lib in $AUTODETECT_LIBS; do
3663     enabled $lib && request $lib
3664 done
3665 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3666 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3667 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3668
3669 disabled logging && logfile=/dev/null
3670
3671 die_license_disabled() {
3672     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3673 }
3674
3675 die_license_disabled_gpl() {
3676     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3677 }
3678
3679 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3680 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3681
3682 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3683 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3684
3685 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3686
3687 # Disable all the library-specific components if the library itself
3688 # is disabled, see AVCODEC_LIST and following _LIST variables.
3689
3690 disable_components(){
3691     disabled ${1} && disable $(
3692         eval components="\$$(toupper ${1})_COMPONENTS"
3693         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3694     )
3695 }
3696
3697 map 'disable_components $v' $LIBRARY_LIST
3698
3699 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3700 set >> $logfile
3701
3702 test -n "$valgrind" && toolchain="valgrind-memcheck"
3703
3704 enabled ossfuzz && {
3705     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3706     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3707 }
3708
3709 case "$toolchain" in
3710     *-asan)
3711         cc_default="${toolchain%-asan}"
3712         add_cflags  -fsanitize=address
3713         add_ldflags -fsanitize=address
3714     ;;
3715     *-msan)
3716         cc_default="${toolchain%-msan}"
3717         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3718         add_ldflags -fsanitize=memory
3719     ;;
3720     *-tsan)
3721         cc_default="${toolchain%-tsan}"
3722         add_cflags  -fsanitize=thread -fPIE
3723         add_ldflags -fsanitize=thread -pie
3724         case "$toolchain" in
3725             gcc-tsan)
3726                 add_cflags  -fPIC
3727                 add_ldflags -fPIC
3728                 ;;
3729         esac
3730     ;;
3731     *-usan)
3732         cc_default="${toolchain%-usan}"
3733         add_cflags  -fsanitize=undefined
3734         add_ldflags -fsanitize=undefined
3735     ;;
3736     valgrind-*)
3737         target_exec_default="valgrind"
3738         case "$toolchain" in
3739             valgrind-massif)
3740                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3741                 ;;
3742             valgrind-memcheck)
3743                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3744                 ;;
3745         esac
3746     ;;
3747     msvc)
3748         # Check whether the current MSVC version needs the C99 converter.
3749         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3750         # support enough of C99 to build ffmpeg. Default to the new
3751         # behaviour if the regexp was unable to match anything, since this
3752         # successfully parses the version number of existing supported
3753         # versions that require the converter (MSVC 2010 and 2012).
3754         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3755         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3756             cc_default="cl"
3757             cxx_default="cl"
3758         else
3759             cc_default="c99wrap cl"
3760             cxx_default="c99wrap cl"
3761         fi
3762         ld_default="$source_path/compat/windows/mslink"
3763         nm_default="dumpbin -symbols"
3764         ar_default="lib"
3765         case "$arch" in
3766         arm*)
3767             as_default="armasm"
3768             ;;
3769         esac
3770         target_os_default="win32"
3771         # Use a relative path for TMPDIR. This makes sure all the
3772         # ffconf temp files are written with a relative path, avoiding
3773         # issues with msys/win32 path conversion for MSVC parameters
3774         # such as -Fo<file> or -out:<file>.
3775         TMPDIR=.
3776     ;;
3777     icl)
3778         cc_default="icl"
3779         ld_default="xilink"
3780         nm_default="dumpbin -symbols"
3781         ar_default="xilib"
3782         target_os_default="win32"
3783         TMPDIR=.
3784     ;;
3785     gcov)
3786         add_cflags  -fprofile-arcs -ftest-coverage
3787         add_ldflags -fprofile-arcs -ftest-coverage
3788     ;;
3789     llvm-cov)
3790         add_cflags -fprofile-arcs -ftest-coverage
3791         add_ldflags --coverage
3792     ;;
3793     hardened)
3794         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3795         add_cflags   -fno-strict-overflow -fstack-protector-all
3796         add_ldflags  -Wl,-z,relro -Wl,-z,now
3797         add_cflags   -fPIE
3798         add_ldexeflags -fPIE -pie
3799     ;;
3800     ?*)
3801         die "Unknown toolchain $toolchain"
3802     ;;
3803 esac
3804
3805 test -n "$cross_prefix" && enable cross_compile
3806
3807 if enabled cross_compile; then
3808     test -n "$arch" && test -n "$target_os" ||
3809         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3810 fi
3811
3812 ar_default="${cross_prefix}${ar_default}"
3813 cc_default="${cross_prefix}${cc_default}"
3814 cxx_default="${cross_prefix}${cxx_default}"
3815 nm_default="${cross_prefix}${nm_default}"
3816 pkg_config_default="${cross_prefix}${pkg_config_default}"
3817 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3818     ranlib_default="${cross_prefix}${ranlib_default} -D"
3819 else
3820     ranlib_default="${cross_prefix}${ranlib_default}"
3821 fi
3822 strip_default="${cross_prefix}${strip_default}"
3823 windres_default="${cross_prefix}${windres_default}"
3824
3825 sysinclude_default="${sysroot}/usr/include"
3826
3827 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3828     target_exec target_os x86asmexe nvcc
3829 enabled cross_compile || host_cc_default=$cc
3830 set_default host_cc
3831
3832 pkg_config_fail_message=""
3833 if ! $pkg_config --version >/dev/null 2>&1; then
3834     warn "$pkg_config not found, library detection may fail."
3835     pkg_config=false
3836 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3837     pkg_config_fail_message="
3838 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3839 fi
3840
3841 if test $doxygen != $doxygen_default && \
3842   ! $doxygen --version >/dev/null 2>&1; then
3843     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3844 fi
3845
3846 exesuf() {
3847     case $1 in
3848         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3849     esac
3850 }
3851
3852 EXESUF=$(exesuf $target_os)
3853 HOSTEXESUF=$(exesuf $host_os)
3854
3855 # set temporary file name
3856 : ${TMPDIR:=$TEMPDIR}
3857 : ${TMPDIR:=$TMP}
3858 : ${TMPDIR:=/tmp}
3859
3860 if [ -n "$tempprefix" ] ; then
3861     mktemp(){
3862         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3863         echo "$tmpname"
3864         mkdir "$tmpname"
3865     }
3866 elif ! check_cmd mktemp -u XXXXXX; then
3867     # simple replacement for missing mktemp
3868     # NOT SAFE FOR GENERAL USE
3869     mktemp(){
3870         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3871         echo "$tmpname"
3872         mkdir "$tmpname"
3873     }
3874 fi
3875
3876 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3877     die "Unable to create temporary directory in $TMPDIR."
3878
3879 tmpfile(){
3880     tmp="${FFTMPDIR}/test"$2
3881     (set -C; exec > $tmp) 2> /dev/null ||
3882         die "Unable to create temporary file in $FFTMPDIR."
3883     eval $1=$tmp
3884 }
3885
3886 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3887 trap 'exit 2' INT
3888
3889 tmpfile TMPASM .asm
3890 tmpfile TMPC   .c
3891 tmpfile TMPCPP .cpp
3892 tmpfile TMPE   $EXESUF
3893 tmpfile TMPH   .h
3894 tmpfile TMPM   .m
3895 tmpfile TMPO   .o
3896 tmpfile TMPS   .S
3897 tmpfile TMPSH  .sh
3898 tmpfile TMPV   .ver
3899
3900 unset -f mktemp
3901
3902 chmod +x $TMPE
3903
3904 # make sure we can execute files in $TMPDIR
3905 cat > $TMPSH 2>> $logfile <<EOF
3906 #! /bin/sh
3907 EOF
3908 chmod +x $TMPSH >> $logfile 2>&1
3909 if ! $TMPSH >> $logfile 2>&1; then
3910     cat <<EOF
3911 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3912 variable to another directory and make sure that it is not mounted noexec.
3913 EOF
3914     die "Sanity test failed."
3915 fi
3916
3917 armasm_flags(){
3918     for flag; do
3919         case $flag in
3920             # Filter out MSVC cl.exe options from cflags that shouldn't
3921             # be passed to gas-preprocessor
3922             -M[TD]*)                                            ;;
3923             *)                  echo $flag                      ;;
3924         esac
3925    done
3926 }
3927
3928 ccc_flags(){
3929     for flag; do
3930         case $flag in
3931             -std=c99)           echo -c99                       ;;
3932             -mcpu=*)            echo -arch ${flag#*=}           ;;
3933             -mieee)             echo -ieee                      ;;
3934             -O*|-fast)          echo $flag                      ;;
3935             -fno-math-errno)    echo -assume nomath_errno       ;;
3936             -g)                 echo -g3                        ;;
3937             -Wall)              echo -msg_enable level2         ;;
3938             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3939             -Wl,*)              echo $flag                      ;;
3940             -f*|-W*)                                            ;;
3941             *)                  echo $flag                      ;;
3942         esac
3943    done
3944 }
3945
3946 cparser_flags(){
3947     for flag; do
3948         case $flag in
3949             -Wno-switch)             echo -Wno-switch-enum ;;
3950             -Wno-format-zero-length) ;;
3951             -Wdisabled-optimization) ;;
3952             -Wno-pointer-sign)       echo -Wno-other ;;
3953             *)                       echo $flag ;;
3954         esac
3955     done
3956 }
3957
3958 msvc_common_flags(){
3959     for flag; do
3960         case $flag in
3961             # In addition to specifying certain flags under the compiler
3962             # specific filters, they must be specified here as well or else the
3963             # generic catch all at the bottom will print the original flag.
3964             -Wall)                ;;
3965             -Wextra)              ;;
3966             -std=c99)             ;;
3967             # Common flags
3968             -fomit-frame-pointer) ;;
3969             -g)                   echo -Z7 ;;
3970             -fno-math-errno)      ;;
3971             -fno-common)          ;;
3972             -fno-signed-zeros)    ;;
3973             -fPIC)                ;;
3974             -mthumb)              ;;
3975             -march=*)             ;;
3976             -lz)                  echo zlib.lib ;;
3977             -lx264)               echo libx264.lib ;;
3978             -lstdc++)             ;;
3979             -l*)                  echo ${flag#-l}.lib ;;
3980             -LARGEADDRESSAWARE)   echo $flag ;;
3981             -L*)                  echo -libpath:${flag#-L} ;;
3982             *)                    echo $flag ;;
3983         esac
3984     done
3985 }
3986
3987 msvc_flags(){
3988     msvc_common_flags "$@"
3989     for flag; do
3990         case $flag in
3991             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3992                                        -wd4554 ;;
3993             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3994                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3995                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3996                                        -wd4307 \
3997                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3998         esac
3999     done
4000 }
4001
4002 icl_flags(){
4003     msvc_common_flags "$@"
4004     for flag; do
4005         case $flag in
4006             # Despite what Intel's documentation says -Wall, which is supported
4007             # on Windows, does enable remarks so disable them here.
4008             -Wall)                echo $flag -Qdiag-disable:remark ;;
4009             -std=c99)             echo -Qstd=c99 ;;
4010             -flto)                echo -ipo ;;
4011         esac
4012     done
4013 }
4014
4015 icc_flags(){
4016     for flag; do
4017         case $flag in
4018             -flto)                echo -ipo ;;
4019             *)                    echo $flag ;;
4020         esac
4021     done
4022 }
4023
4024 pgi_flags(){
4025     for flag; do
4026         case $flag in
4027             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4028             -fomit-frame-pointer) echo -Mnoframe ;;
4029             -g)                   echo -gopt ;;
4030             *)                    echo $flag ;;
4031         esac
4032     done
4033 }
4034
4035 suncc_flags(){
4036     for flag; do
4037         case $flag in
4038             -march=*|-mcpu=*)
4039                 case "${flag#*=}" in
4040                     native)                   echo -xtarget=native       ;;
4041                     v9|niagara)               echo -xarch=sparc          ;;
4042                     ultrasparc)               echo -xarch=sparcvis       ;;
4043                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4044                     i586|pentium)             echo -xchip=pentium        ;;
4045                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4046                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4047                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4048                     pentium4*)          echo -xtarget=pentium4           ;;
4049                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4050                     *-sse3)             echo -xarch=sse3                 ;;
4051                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4052                     bonnell)                   echo -xarch=ssse3         ;;
4053                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4054                     westmere)                  echo -xtarget=westmere    ;;
4055                     silvermont)                echo -xarch=sse4_2        ;;
4056                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4057                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4058                                                echo -xarch=avx           ;;
4059                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4060                     btver1)                    echo -xarch=amdsse4a      ;;
4061                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4062                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4063                     k8|opteron|athlon64|athlon-fx)
4064                                                echo -xarch=sse2a         ;;
4065                     athlon*)                   echo -xarch=pentium_proa  ;;
4066                 esac
4067                 ;;
4068             -std=c99)             echo -xc99              ;;
4069             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4070             -fPIC)                echo -KPIC -xcode=pic32 ;;
4071             -W*,*)                echo $flag              ;;
4072             -f*-*|-W*|-mimpure-text)                      ;;
4073             -shared)              echo -G                 ;;
4074             *)                    echo $flag              ;;
4075         esac
4076     done
4077 }
4078
4079 tms470_flags(){
4080     for flag; do
4081         case $flag in
4082             -march=*|-mcpu=*)
4083                 case "${flag#*=}" in
4084                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4085                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4086                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4087                     armv6*|arm11*)          echo -mv=6   ;;
4088                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4089                                             echo -mv=5e  ;;
4090                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4091                 esac
4092                 ;;
4093             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4094             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4095             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4096             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4097             -msoft-float)   echo --float_support=vfplib       ;;
4098             -O[0-3]|-mf=*)  echo $flag                        ;;
4099             -g)             echo -g -mn                       ;;
4100             -pds=*)         echo $flag                        ;;
4101             -D*|-I*)        echo $flag                        ;;
4102             --gcc|--abi=*)  echo $flag                        ;;
4103             -me)            echo $flag                        ;;
4104         esac
4105     done
4106 }
4107
4108 probe_cc(){
4109     pfx=$1
4110     _cc=$2
4111     first=$3
4112
4113     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4114     unset _ld_o _ldflags _ld_lib _ld_path
4115     unset _depflags _DEPCMD _DEPFLAGS
4116     _flags_filter=echo
4117
4118     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4119         true # no-op to avoid reading stdin in following checks
4120     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4121         _type=llvm_gcc
4122         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4123         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4124         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4125         _cflags_speed='-O3'
4126         _cflags_size='-Os'
4127     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4128         _type=gcc
4129         gcc_version=$($_cc --version | head -n1)
4130         gcc_basever=$($_cc -dumpversion)
4131         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4132         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4133         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4134         case $gcc_basever in
4135             2) ;;
4136             2.*) ;;
4137             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4138         esac
4139         if [ "$first" = true ]; then
4140             case $gcc_basever in
4141                 4.2*)
4142                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4143             esac
4144         fi
4145         _cflags_speed='-O3'
4146         _cflags_size='-Os'
4147     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4148         _type=icc
4149         _ident=$($_cc --version | head -n1)
4150         _depflags='-MMD'
4151         _cflags_speed='-O3'
4152         _cflags_size='-Os'
4153         _cflags_noopt='-O1'
4154         _flags_filter=icc_flags
4155     elif $_cc -v 2>&1 | grep -q xlc; then
4156         _type=xlc
4157         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4158         _cflags_speed='-O5'
4159         _cflags_size='-O5 -qcompact'
4160     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4161         _type=ccc
4162         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4163         _DEPFLAGS='-M'
4164         _cflags_speed='-fast'
4165         _cflags_size='-O1'
4166         _flags_filter=ccc_flags
4167     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4168         test -d "$sysroot" || die "No valid sysroot specified."
4169         _type=armcc
4170         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4171         armcc_conf="$PWD/armcc.conf"
4172         $_cc --arm_linux_configure                 \
4173              --arm_linux_config_file="$armcc_conf" \
4174              --configure_sysroot="$sysroot"        \
4175              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4176              die "Error creating armcc configuration file."
4177         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4178         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4179         as_default="${cross_prefix}gcc"
4180         _depflags='-MMD'
4181         _cflags_speed='-O3'
4182         _cflags_size='-Os'
4183     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4184         _type=tms470
4185         _ident=$($_cc -version | head -n1 | tr -s ' ')
4186         _flags='--gcc --abi=eabi -me'
4187         _cc_e='-ppl -fe=$@'
4188         _cc_o='-fe=$@'
4189         _depflags='-ppa -ppd=$(@:.o=.d)'
4190         _cflags_speed='-O3 -mf=5'
4191         _cflags_size='-O3 -mf=2'
4192         _flags_filter=tms470_flags
4193     elif $_cc -v 2>&1 | grep -q clang; then
4194         _type=clang
4195         _ident=$($_cc --version 2>/dev/null | head -n1)
4196         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4197         _cflags_speed='-O3'
4198         _cflags_size='-Oz'
4199     elif $_cc -V 2>&1 | grep -q Sun; then
4200         _type=suncc
4201         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4202         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4203         _DEPFLAGS='-xM1 -xc99'
4204         _ldflags='-std=c99'
4205         _cflags_speed='-O5'
4206         _cflags_size='-O5 -xspace'
4207         _flags_filter=suncc_flags
4208     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4209         _type=pathscale
4210         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4211         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4212         _cflags_speed='-O2'
4213         _cflags_size='-Os'
4214         _flags_filter='filter_out -Wdisabled-optimization'
4215     elif $_cc -v 2>&1 | grep -q Open64; then
4216         _type=open64
4217         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4218         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4219         _cflags_speed='-O2'
4220         _cflags_size='-Os'
4221         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4222     elif $_cc -V 2>&1 | grep -q Portland; then
4223         _type=pgi
4224         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4225         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4226         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4227         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4228         _cflags_noopt="-O"
4229         _flags_filter=pgi_flags
4230     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4231         _type=armasm
4232         _ident=$($_cc | head -n1)
4233         # 4509: "This form of conditional instruction is deprecated"
4234         _flags="-nologo -ignore 4509"
4235         _flags_filter=armasm_flags
4236     elif $_cc 2>&1 | grep -q Intel; then
4237         _type=icl
4238         _ident=$($_cc 2>&1 | head -n1)
4239         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4240         # Not only is O3 broken on 13.x+ but it is slower on all previous
4241         # versions (tested) as well.
4242         _cflags_speed="-O2"
4243         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4244         if $_cc 2>&1 | grep -q Linker; then
4245             _ld_o='-out:$@'
4246         else
4247             _ld_o='-Fe$@'
4248         fi
4249         _cc_o='-Fo$@'
4250         _cc_e='-P'
4251         _flags_filter=icl_flags
4252         _ld_lib='lib%.a'
4253         _ld_path='-libpath:'
4254         # -Qdiag-error to make icl error when seeing certain unknown arguments
4255         _flags='-nologo -Qdiag-error:4044,10157'
4256         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4257         # with MSVC which enables it by default.
4258         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4259         disable stripping
4260     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4261         # lld can emulate multiple different linkers; in ms link.exe mode,
4262         # the -? parameter gives the help output which contains an identifyable
4263         # string, while it gives an error in other modes.
4264         _type=lld-link
4265         # The link.exe mode doesn't have a switch for getting the version,
4266         # but we can force it back to gnu mode and get the version from there.
4267         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4268         _ld_o='-out:$@'
4269         _flags_filter=msvc_flags
4270         _ld_lib='lib%.a'
4271         _ld_path='-libpath:'
4272     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4273         _type=msvc
4274         _ident=$($_cc 2>&1 | head -n1)
4275         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4276         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4277         _cflags_speed="-O2"
4278         _cflags_size="-O1"
4279         _cflags_noopt="-O1"
4280         if $_cc -nologo- 2>&1 | grep -q Linker; then
4281             _ld_o='-out:$@'
4282         else
4283             _ld_o='-Fe$@'
4284         fi
4285         _cc_o='-Fo$@'
4286         _cc_e='-P -Fi$@'
4287         _flags_filter=msvc_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290         _flags='-nologo'
4291         disable stripping
4292     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4293         _type=cparser
4294         _ident=$($_cc --version | head -n1)
4295         _depflags='-MMD'
4296         _cflags_speed='-O4'
4297         _cflags_size='-O2'
4298         _flags_filter=cparser_flags
4299     fi
4300
4301     eval ${pfx}_type=\$_type
4302     eval ${pfx}_ident=\$_ident
4303 }
4304
4305 set_ccvars(){
4306     eval ${1}_C=\${_cc_c-\${${1}_C}}
4307     eval ${1}_E=\${_cc_e-\${${1}_E}}
4308     eval ${1}_O=\${_cc_o-\${${1}_O}}
4309
4310     if [ -n "$_depflags" ]; then
4311         eval ${1}_DEPFLAGS=\$_depflags
4312     else
4313         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4314         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4315         eval DEP${1}FLAGS=\$_flags
4316     fi
4317 }
4318
4319 probe_cc cc "$cc" "true"
4320 cflags_filter=$_flags_filter
4321 cflags_speed=$_cflags_speed
4322 cflags_size=$_cflags_size
4323 cflags_noopt=$_cflags_noopt
4324 add_cflags $_flags $_cflags
4325 cc_ldflags=$_ldflags
4326 set_ccvars CC
4327 set_ccvars CXX
4328
4329 probe_cc hostcc "$host_cc"
4330 host_cflags_filter=$_flags_filter
4331 host_cflags_speed=$_cflags_speed
4332 add_host_cflags  $_flags $_cflags
4333 set_ccvars HOSTCC
4334
4335 test -n "$cc_type" && enable $cc_type ||
4336     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4337
4338 : ${as_default:=$cc}
4339 : ${objcc_default:=$cc}
4340 : ${dep_cc_default:=$cc}
4341 : ${ld_default:=$cc}
4342 : ${host_ld_default:=$host_cc}
4343 set_default ar as objcc dep_cc ld ln_s host_ld windres
4344
4345 probe_cc as "$as"
4346 asflags_filter=$_flags_filter
4347 add_asflags $_flags $_cflags
4348 set_ccvars AS
4349
4350 probe_cc objcc "$objcc"
4351 objcflags_filter=$_flags_filter
4352 add_objcflags $_flags $_cflags
4353 set_ccvars OBJC
4354
4355 probe_cc ld "$ld"
4356 ldflags_filter=$_flags_filter
4357 add_ldflags $_flags $_ldflags
4358 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4359 LD_O=${_ld_o-$LD_O}
4360 LD_LIB=${_ld_lib-$LD_LIB}
4361 LD_PATH=${_ld_path-$LD_PATH}
4362
4363 probe_cc hostld "$host_ld"
4364 host_ldflags_filter=$_flags_filter
4365 add_host_ldflags $_flags $_ldflags
4366 HOSTLD_O=${_ld_o-$HOSTLD_O}
4367
4368 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4369     probe_cc depcc "$dep_cc"
4370     CCDEP=${_DEPCMD:-$DEPCMD}
4371     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4372     DEPCCFLAGS=$_flags
4373 fi
4374
4375 if $ar 2>&1 | grep -q Microsoft; then
4376     arflags="-nologo"
4377     ar_o='-out:$@'
4378 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4379     arflags="rq"
4380     ar_o='$@'
4381 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4382     arflags='-Xany -r -c'
4383     ar_o='$@'
4384 elif $ar 2>&1 | grep -q "\[D\] "; then
4385     arflags="rcD"
4386     ar_o='$@'
4387 else
4388     arflags="rc"
4389     ar_o='$@'
4390 fi
4391
4392 add_cflags $extra_cflags
4393 add_cxxflags $extra_cxxflags
4394 add_objcflags $extra_objcflags
4395 add_asflags $extra_cflags
4396
4397 if test -n "$sysroot"; then
4398     case "$cc_type" in
4399         gcc|llvm_gcc|clang)
4400             add_cppflags --sysroot="$sysroot"
4401             add_ldflags --sysroot="$sysroot"
4402 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4403             add_cppflags -isysroot "$sysroot"
4404             add_ldflags -isysroot "$sysroot"
4405         ;;
4406         tms470)
4407             add_cppflags -I"$sysinclude"
4408             add_ldflags  --sysroot="$sysroot"
4409         ;;
4410     esac
4411 fi
4412
4413 if test "$cpu" = host; then
4414     enabled cross_compile &&
4415         die "--cpu=host makes no sense when cross-compiling."
4416
4417     case "$cc_type" in
4418         gcc|llvm_gcc)
4419             check_native(){
4420                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4421                 sed -n "/cc1.*$1=/{
4422                             s/.*$1=\\([^ ]*\\).*/\\1/
4423                             p
4424                             q
4425                         }" $TMPE
4426             }
4427             cpu=$(check_native -march || check_native -mcpu)
4428         ;;
4429         clang)
4430             check_native(){
4431                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4432                 sed -n "/cc1.*-target-cpu /{
4433                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4434                             p
4435                             q
4436                         }" $TMPE
4437             }
4438             cpu=$(check_native -march)
4439         ;;
4440     esac
4441
4442     test "${cpu:-host}" = host &&
4443         die "--cpu=host not supported with compiler $cc"
4444 fi
4445
4446 # Deal with common $arch aliases
4447 case "$arch" in
4448     aarch64|arm64)
4449         arch="aarch64"
4450     ;;
4451     arm*|iPad*|iPhone*)
4452         arch="arm"
4453     ;;
4454     mips*|IP*)
4455         case "$arch" in
4456         *el)
4457             add_cppflags -EL
4458             add_ldflags -EL
4459         ;;
4460         *eb)
4461             add_cppflags -EB
4462             add_ldflags -EB
4463         ;;
4464         esac
4465         arch="mips"
4466     ;;
4467     parisc*|hppa*)
4468         arch="parisc"
4469     ;;
4470     "Power Macintosh"|ppc*|powerpc*)
4471         arch="ppc"
4472     ;;
4473     s390|s390x)
4474         arch="s390"
4475     ;;
4476     sh4|sh)
4477         arch="sh4"
4478     ;;
4479     sun4*|sparc*)
4480         arch="sparc"
4481     ;;
4482     tilegx|tile-gx)
4483         arch="tilegx"
4484     ;;
4485     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4486         arch="x86"
4487     ;;
4488 esac
4489
4490 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4491 enable $arch
4492
4493 # Add processor-specific flags
4494 if enabled aarch64; then
4495
4496     case $cpu in
4497         armv*)
4498             cpuflags="-march=$cpu"
4499         ;;
4500         *)
4501             cpuflags="-mcpu=$cpu"
4502         ;;
4503     esac
4504
4505 elif enabled alpha; then
4506
4507     cpuflags="-mcpu=$cpu"
4508
4509 elif enabled arm; then
4510
4511     check_arm_arch() {
4512         check_cpp_condition stddef.h \
4513             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4514             $cpuflags
4515     }
4516
4517     probe_arm_arch() {
4518         if   check_arm_arch 4;        then echo armv4
4519         elif check_arm_arch 4T;       then echo armv4t
4520         elif check_arm_arch 5;        then echo armv5
4521         elif check_arm_arch 5E;       then echo armv5e
4522         elif check_arm_arch 5T;       then echo armv5t
4523         elif check_arm_arch 5TE;      then echo armv5te
4524         elif check_arm_arch 5TEJ;     then echo armv5te
4525         elif check_arm_arch 6;        then echo armv6
4526         elif check_arm_arch 6J;       then echo armv6j
4527         elif check_arm_arch 6K;       then echo armv6k
4528         elif check_arm_arch 6Z;       then echo armv6z
4529         elif check_arm_arch 6ZK;      then echo armv6zk
4530         elif check_arm_arch 6T2;      then echo armv6t2
4531         elif check_arm_arch 7;        then echo armv7
4532         elif check_arm_arch 7A  7_A;  then echo armv7-a
4533         elif check_arm_arch 7S;       then echo armv7-a
4534         elif check_arm_arch 7R  7_R;  then echo armv7-r
4535         elif check_arm_arch 7M  7_M;  then echo armv7-m
4536         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4537         elif check_arm_arch 8A  8_A;  then echo armv8-a
4538         fi
4539     }
4540
4541     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4542
4543     case $cpu in
4544         armv*)
4545             cpuflags="-march=$cpu"
4546             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4547         ;;
4548         *)
4549             cpuflags="-mcpu=$cpu"
4550             case $cpu in
4551                 cortex-a*)                               subarch=armv7a  ;;
4552                 cortex-r*)                               subarch=armv7r  ;;
4553                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4554                 arm11*)                                  subarch=armv6   ;;
4555                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4556                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4557                 *)                             subarch=$(probe_arm_arch) ;;
4558             esac
4559         ;;
4560     esac
4561
4562     case "$subarch" in
4563         armv5t*)    enable fast_clz                ;;
4564         armv[6-8]*)
4565             enable fast_clz
4566             disabled fast_unaligned || enable fast_unaligned
4567             ;;
4568     esac
4569
4570 elif enabled avr32; then
4571
4572     case $cpu in
4573         ap7[02]0[0-2])
4574             subarch="avr32_ap"
4575             cpuflags="-mpart=$cpu"
4576         ;;
4577         ap)
4578             subarch="avr32_ap"
4579             cpuflags="-march=$cpu"
4580         ;;
4581         uc3[ab]*)
4582             subarch="avr32_uc"
4583             cpuflags="-mcpu=$cpu"
4584         ;;
4585         uc)
4586             subarch="avr32_uc"
4587             cpuflags="-march=$cpu"
4588         ;;
4589     esac
4590
4591 elif enabled bfin; then
4592
4593     cpuflags="-mcpu=$cpu"
4594
4595 elif enabled mips; then
4596
4597     cpuflags="-march=$cpu"
4598
4599     if [ "$cpu" != "generic" ]; then
4600         disable mips32r2
4601         disable mips32r5
4602         disable mips64r2
4603         disable mips32r6
4604         disable mips64r6
4605         disable loongson2
4606         disable loongson3
4607
4608         case $cpu in
4609             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4610                 enable mips32r2
4611                 disable msa
4612             ;;
4613             p5600|i6400|p6600)
4614                 disable mipsdsp
4615                 disable mipsdspr2
4616             ;;
4617             loongson*)
4618                 enable loongson2
4619                 enable loongson3
4620                 enable local_aligned_8 local_aligned_16 local_aligned_32
4621                 enable simd_align_16
4622                 enable fast_64bit
4623                 enable fast_clz
4624                 enable fast_cmov
4625                 enable fast_unaligned
4626                 disable aligned_stack
4627                 disable mipsfpu
4628                 disable mipsdsp
4629                 disable mipsdspr2
4630                 case $cpu in
4631                     loongson3*)
4632                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4633                     ;;
4634                     loongson2e)
4635                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                     loongson2f)
4638                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                 esac
4641             ;;
4642             *)
4643                 # Unknown CPU. Disable everything.
4644                 warn "unknown CPU. Disabling all MIPS optimizations."
4645                 disable mipsfpu
4646                 disable mipsdsp
4647                 disable mipsdspr2
4648                 disable msa
4649                 disable mmi
4650             ;;
4651         esac
4652
4653         case $cpu in
4654             24kc)
4655                 disable mipsfpu
4656                 disable mipsdsp
4657                 disable mipsdspr2
4658             ;;
4659             24kf*)
4660                 disable mipsdsp
4661                 disable mipsdspr2
4662             ;;
4663             24kec|34kc|1004kc)
4664                 disable mipsfpu
4665                 disable mipsdspr2
4666             ;;
4667             24kef*|34kf*|1004kf*)
4668                 disable mipsdspr2
4669             ;;
4670             74kc)
4671                 disable mipsfpu
4672             ;;
4673             p5600)
4674                 enable mips32r5
4675                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4676             ;;
4677             i6400)
4678                 enable mips64r6
4679                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4680             ;;
4681             p6600)
4682                 enable mips64r6
4683                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4684             ;;
4685         esac
4686     else
4687         # We do not disable anything. Is up to the user to disable the unwanted features.
4688         warn 'generic cpu selected'
4689     fi
4690
4691 elif enabled ppc; then
4692
4693     disable ldbrx
4694
4695     case $(tolower $cpu) in
4696         601|ppc601|powerpc601)
4697             cpuflags="-mcpu=601"
4698             disable altivec
4699         ;;
4700         603*|ppc603*|powerpc603*)
4701             cpuflags="-mcpu=603"
4702             disable altivec
4703         ;;
4704         604*|ppc604*|powerpc604*)
4705             cpuflags="-mcpu=604"
4706             disable altivec
4707         ;;
4708         g3|75*|ppc75*|powerpc75*)
4709             cpuflags="-mcpu=750"
4710             disable altivec
4711         ;;
4712         g4|745*|ppc745*|powerpc745*)
4713             cpuflags="-mcpu=7450"
4714             disable vsx
4715         ;;
4716         74*|ppc74*|powerpc74*)
4717             cpuflags="-mcpu=7400"
4718             disable vsx
4719         ;;
4720         g5|970|ppc970|powerpc970)
4721             cpuflags="-mcpu=970"
4722             disable vsx
4723         ;;
4724         power[3-6]*)
4725             cpuflags="-mcpu=$cpu"
4726             disable vsx
4727         ;;
4728         power[7-8]*)
4729             cpuflags="-mcpu=$cpu"
4730         ;;
4731         cell)
4732             cpuflags="-mcpu=cell"
4733             enable ldbrx
4734             disable vsx
4735         ;;
4736         e500mc)
4737             cpuflags="-mcpu=e500mc"
4738             disable altivec
4739         ;;
4740         e500v2)
4741             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4742             disable altivec
4743             disable dcbzl
4744         ;;
4745         e500)
4746             cpuflags="-mcpu=8540 -mhard-float"
4747             disable altivec
4748             disable dcbzl
4749         ;;
4750     esac
4751
4752 elif enabled sparc; then
4753
4754     case $cpu in
4755         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4756             cpuflags="-mcpu=$cpu"
4757         ;;
4758         ultrasparc*|niagara[234])
4759             cpuflags="-mcpu=$cpu"
4760         ;;
4761     esac
4762
4763 elif enabled x86; then
4764
4765     case $cpu in
4766         i[345]86|pentium)
4767             cpuflags="-march=$cpu"
4768             disable i686
4769             disable mmx
4770         ;;
4771         # targets that do NOT support nopl and conditional mov (cmov)
4772         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4773             cpuflags="-march=$cpu"
4774             disable i686
4775         ;;
4776         # targets that do support nopl and conditional mov (cmov)
4777         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4778         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4779         |amdfam10|barcelona|b[dt]ver*|znver*)
4780             cpuflags="-march=$cpu"
4781             enable i686
4782             enable fast_cmov
4783         ;;
4784         # targets that do support conditional mov but on which it's slow
4785         pentium4|pentium4m|prescott|nocona)
4786             cpuflags="-march=$cpu"
4787             enable i686
4788             disable fast_cmov
4789         ;;
4790     esac
4791
4792 fi
4793
4794 if [ "$cpu" != generic ]; then
4795     add_cflags  $cpuflags
4796     add_asflags $cpuflags
4797     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4798 fi
4799
4800 # compiler sanity check
4801 check_exec <<EOF
4802 int main(void){ return 0; }
4803 EOF
4804 if test "$?" != 0; then
4805     echo "$cc is unable to create an executable file."
4806     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4807         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4808         echo "Only do this if you know what cross compiling means."
4809     fi
4810     die "C compiler test failed."
4811 fi
4812
4813 add_cppflags -D_ISOC99_SOURCE
4814 add_cxxflags -D__STDC_CONSTANT_MACROS
4815 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4816
4817 # some compilers silently accept -std=c11, so we also need to check that the
4818 # version macro is defined properly
4819 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4820     add_cflags -std=c11
4821 else
4822     check_cflags -std=c99
4823 fi
4824
4825 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4826 #include <stdlib.h>
4827 EOF
4828 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4829 #include <stdlib.h>
4830 EOF
4831
4832 add_host_cppflags -D_ISOC99_SOURCE
4833 check_host_cflags -std=c99
4834 check_host_cflags -Wall
4835 check_host_cflags $host_cflags_speed
4836
4837 check_64bit(){
4838     arch32=$1
4839     arch64=$2
4840     expr=$3
4841     check_code cc "" "int test[2*($expr) - 1]" &&
4842         subarch=$arch64 || subarch=$arch32
4843 }
4844
4845 case "$arch" in
4846     aarch64|alpha|ia64)
4847         spic=$shared
4848     ;;
4849     mips)
4850         check_64bit mips mips64 '_MIPS_SIM > 1'
4851         spic=$shared
4852     ;;
4853     parisc)
4854         check_64bit parisc parisc64 'sizeof(void *) > 4'
4855         spic=$shared
4856     ;;
4857     ppc)
4858         check_64bit ppc ppc64 'sizeof(void *) > 4'
4859         spic=$shared
4860     ;;
4861     s390)
4862         check_64bit s390 s390x 'sizeof(void *) > 4'
4863         spic=$shared
4864     ;;
4865     sparc)
4866         check_64bit sparc sparc64 'sizeof(void *) > 4'
4867         spic=$shared
4868     ;;
4869     x86)
4870         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4871         # Treat x32 as x64 for now. Note it also needs spic=$shared