Merge commit 'd154bdd3d053128c908a994bb26e14bbc17f0e53'
[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   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case $v in $pat) printf '%s ' $v ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_safe(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_safe(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_safe(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_safe(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 do_check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740         append allopts $cfg
741
742         eval dep_all="\$${cfg}_deps"
743         eval dep_any="\$${cfg}_deps_any"
744         eval dep_con="\$${cfg}_conflict"
745         eval dep_sel="\$${cfg}_select"
746         eval dep_sgs="\$${cfg}_suggest"
747         eval dep_ifa="\$${cfg}_if"
748         eval dep_ifn="\$${cfg}_if_any"
749
750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
753
754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
760
761         if enabled $cfg; then
762             enable_deep $dep_sel
763             enable_deep_weak $dep_sgs
764         fi
765
766         disable ${cfg}_checking
767     done
768 }
769
770 check_deps(){
771     unset allopts
772
773     do_check_deps "$@"
774
775     for cfg in $allopts; do
776         enabled $cfg || continue
777         eval dep_extralibs="\$${cfg}_extralibs"
778         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
779     done
780 }
781
782 print_config(){
783     pfx=$1
784     files=$2
785     shift 2
786     map 'eval echo "$v \${$v:-no}"' "$@" |
787     awk "BEGIN { split(\"$files\", files) }
788         {
789             c = \"$pfx\" toupper(\$1);
790             v = \$2;
791             sub(/yes/, 1, v);
792             sub(/no/,  0, v);
793             for (f in files) {
794                 file = files[f];
795                 if (file ~ /\\.h\$/) {
796                     printf(\"#define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.asm\$/) {
798                     printf(\"%%define %s %d\\n\", c, v) >>file;
799                 } else if (file ~ /\\.mak\$/) {
800                     n = -v ? \"\" : \"!\";
801                     printf(\"%s%s=yes\\n\", n, c) >>file;
802                 } else if (file ~ /\\.texi\$/) {
803                     pre = -v ? \"\" : \"@c \";
804                     yesno = \$2;
805                     c2 = tolower(c);
806                     gsub(/_/, \"-\", c2);
807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
808                 }
809             }
810         }"
811 }
812
813 print_enabled(){
814     suf=$1
815     shift
816     for v; do
817         enabled $v && printf "%s\n" ${v%$suf}
818     done
819 }
820
821 append(){
822     var=$1
823     shift
824     eval "$var=\"\$$var $*\""
825 }
826
827 prepend(){
828     var=$1
829     shift
830     eval "$var=\"$* \$$var\""
831 }
832
833 unique(){
834     var=$1
835     uniq_list=""
836     for tok in $(eval echo \$$var); do
837         uniq_list="$(filter_out $tok $uniq_list) $tok"
838     done
839     eval "$var=\"${uniq_list}\""
840 }
841
842 add_cppflags(){
843     append CPPFLAGS "$@"
844 }
845
846 add_cflags(){
847     append CFLAGS $($cflags_filter "$@")
848 }
849
850 add_cflags_headers(){
851     append CFLAGS_HEADERS $($cflags_filter "$@")
852 }
853
854 add_cxxflags(){
855     append CXXFLAGS $($cflags_filter "$@")
856 }
857
858 add_asflags(){
859     append ASFLAGS $($asflags_filter "$@")
860 }
861
862 add_objcflags(){
863     append OBJCFLAGS $($objcflags_filter "$@")
864 }
865
866 add_ldflags(){
867     append LDFLAGS $($ldflags_filter "$@")
868 }
869
870 add_ldexeflags(){
871     append LDEXEFLAGS $($ldflags_filter "$@")
872 }
873
874 add_ldlibflags(){
875     append LDLIBFLAGS $($ldflags_filter "$@")
876 }
877
878 add_stripflags(){
879     append ASMSTRIPFLAGS "$@"
880 }
881
882 add_extralibs(){
883     prepend extralibs $($ldflags_filter "$@")
884 }
885
886 add_host_cppflags(){
887     append host_cppflags "$@"
888 }
889
890 add_host_cflags(){
891     append host_cflags $($host_cflags_filter "$@")
892 }
893
894 add_host_ldflags(){
895     append host_ldflags $($host_ldflags_filter "$@")
896 }
897
898 add_compat(){
899     append compat_objs $1
900     shift
901     map 'add_cppflags -D$v' "$@"
902 }
903
904 check_cmd(){
905     log "$@"
906     "$@" >> $logfile 2>&1
907 }
908
909 check_stat(){
910     log check_stat "$@"
911     stat "$1" >> $logfile 2>&1
912 }
913
914 cc_o(){
915     eval printf '%s\\n' $CC_O
916 }
917
918 cc_e(){
919     eval printf '%s\\n' $CC_E
920 }
921
922 check_cc(){
923     log check_cc "$@"
924     cat > $TMPC
925     log_file $TMPC
926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
927 }
928
929 check_cxx(){
930     log check_cxx "$@"
931     cat > $TMPCPP
932     log_file $TMPCPP
933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
934 }
935
936 check_objcc(){
937     log check_objcc "$@"
938     cat > $TMPM
939     log_file $TMPM
940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
941 }
942
943 check_cpp(){
944     log check_cpp "$@"
945     cat > $TMPC
946     log_file $TMPC
947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
948 }
949
950 as_o(){
951     eval printf '%s\\n' $AS_O
952 }
953
954 check_as(){
955     log check_as "$@"
956     cat > $TMPS
957     log_file $TMPS
958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
959 }
960
961 check_inline_asm(){
962     log check_inline_asm "$@"
963     name="$1"
964     code="$2"
965     shift 2
966     disable $name
967     check_cc "$@" <<EOF && enable $name
968 void foo(void){ __asm__ volatile($code); }
969 EOF
970 }
971
972 check_inline_asm_flags(){
973     log check_inline_asm_flags "$@"
974     name="$1"
975     code="$2"
976     flags=''
977     shift 2
978     while [ "$1" != "" ]; do
979       append flags $1
980       shift
981     done;
982     disable $name
983     cat > $TMPC <<EOF
984 void foo(void){ __asm__ volatile($code); }
985 EOF
986     log_file $TMPC
987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
989 }
990
991 check_insn(){
992     log check_insn "$@"
993     check_inline_asm ${1}_inline "\"$2\""
994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
995 }
996
997 check_x86asm(){
998     log check_x86asm "$@"
999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     check_cpp "$@" <<EOF && enable_safe $header
1115 #include <$header>
1116 int x;
1117 EOF
1118 }
1119
1120 check_header_objcc(){
1121     log check_header_objcc "$@"
1122     rm -f -- "$TMPO"
1123     header=$1
1124     shift
1125     disable_safe $header
1126     {
1127        echo "#include <$header>"
1128        echo "int main(void) { return 0; }"
1129     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1130 }
1131
1132 check_apple_framework(){
1133     log check_apple_framework "$@"
1134     framework="$1"
1135     name="$(tolower $framework)"
1136     header="${framework}/${framework}.h"
1137     disable $name
1138     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && add_extralibs "$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     headers="$1"
1264     classes="$2"
1265     shift 2
1266     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1267 }
1268
1269 check_pkg_config(){
1270     log check_pkg_config "$@"
1271     name="$1"
1272     pkg_version="$2"
1273     pkg="${2%% *}"
1274     headers="$3"
1275     funcs="$4"
1276     shift 4
1277     disable $name
1278     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1279     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1280     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1281     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1282         enable $name &&
1283         set_safe "${pkg}_cflags"    $pkg_cflags &&
1284         set_safe "${pkg}_extralibs" $pkg_libs
1285 }
1286
1287 check_exec(){
1288     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1289 }
1290
1291 check_exec_crash(){
1292     log check_exec_crash "$@"
1293     code=$(cat)
1294
1295     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1296     # are safe but may not be available everywhere.  Thus we use
1297     # raise(SIGTERM) instead.  The check is run in a subshell so we
1298     # can redirect the "Terminated" message from the shell.  SIGBUS
1299     # is not defined by standard C so it is used conditionally.
1300
1301     (check_exec "$@") >> $logfile 2>&1 <<EOF
1302 #include <signal.h>
1303 static void sighandler(int sig){
1304     raise(SIGTERM);
1305 }
1306 int foo(void){
1307     $code
1308 }
1309 int (*func_ptr)(void) = foo;
1310 int main(void){
1311     signal(SIGILL, sighandler);
1312     signal(SIGFPE, sighandler);
1313     signal(SIGSEGV, sighandler);
1314 #ifdef SIGBUS
1315     signal(SIGBUS, sighandler);
1316 #endif
1317     return func_ptr();
1318 }
1319 EOF
1320 }
1321
1322 check_type(){
1323     log check_type "$@"
1324     headers=$1
1325     type=$2
1326     shift 2
1327     disable_safe "$type"
1328     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1329 }
1330
1331 check_struct(){
1332     log check_struct "$@"
1333     headers=$1
1334     struct=$2
1335     member=$3
1336     shift 3
1337     disable_safe "${struct}_${member}"
1338     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1339         enable_safe "${struct}_${member}"
1340 }
1341
1342 check_builtin(){
1343     log check_builtin "$@"
1344     name=$1
1345     headers=$2
1346     builtin=$3
1347     shift 3
1348     disable "$name"
1349     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1350 }
1351
1352 check_compile_assert(){
1353     log check_compile_assert "$@"
1354     name=$1
1355     headers=$2
1356     condition=$3
1357     shift 3
1358     disable "$name"
1359     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1360 }
1361
1362 require(){
1363     log require "$@"
1364     name_version="$1"
1365     name="${1%% *}"
1366     headers="$2"
1367     func="$3"
1368     shift 3
1369     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1370 }
1371
1372 require_cpp(){
1373     name="$1"
1374     headers="$2"
1375     classes="$3"
1376     shift 3
1377     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1378 }
1379
1380 require_header(){
1381     log require "$@"
1382     header="$1"
1383     shift
1384     check_header "$header" "$@" || die "ERROR: $header header not found"
1385 }
1386
1387 require_cpp_condition(){
1388     log require "$@"
1389     header="$1"
1390     condition="$2"
1391     shift 2
1392     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1393 }
1394
1395 use_pkg_config(){
1396     log use_pkg_config "$@"
1397     pkg="${2%% *}"
1398     check_pkg_config "$@" || return 1
1399     add_cflags    $(get_safe "${pkg}_cflags")
1400     add_extralibs $(get_safe "${pkg}_extralibs")
1401 }
1402
1403 require_pkg_config(){
1404     log require_pkg_config "$@"
1405     pkg_version="$2"
1406     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1407 }
1408
1409 hostcc_e(){
1410     eval printf '%s\\n' $HOSTCC_E
1411 }
1412
1413 hostcc_o(){
1414     eval printf '%s\\n' $HOSTCC_O
1415 }
1416
1417 check_host_cc(){
1418     log check_host_cc "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1422 }
1423
1424 check_host_cpp(){
1425     log check_host_cpp "$@"
1426     cat > $TMPC
1427     log_file $TMPC
1428     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1429 }
1430
1431 check_host_cppflags(){
1432     log check_host_cppflags "$@"
1433     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1434 #include <stdlib.h>
1435 EOF
1436 }
1437
1438 check_host_cflags(){
1439     log check_host_cflags "$@"
1440     set -- $($host_cflags_filter "$@")
1441     check_host_cc "$@" <<EOF && append host_cflags "$@"
1442 int x;
1443 EOF
1444 }
1445
1446 check_host_cpp_condition(){
1447     log check_host_cpp_condition "$@"
1448     header=$1
1449     condition=$2
1450     shift 2
1451     check_host_cpp "$@" <<EOF
1452 #include <$header>
1453 #if !($condition)
1454 #error "unsatisfied condition: $condition"
1455 #endif
1456 EOF
1457 }
1458
1459 cp_if_changed(){
1460     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1461     mkdir -p "$(dirname $2)"
1462     cp -f "$1" "$2"
1463 }
1464
1465 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1466 # system-dependent things.
1467
1468 AVCODEC_COMPONENTS="
1469     bsfs
1470     decoders
1471     encoders
1472     hwaccels
1473     parsers
1474 "
1475
1476 AVDEVICE_COMPONENTS="
1477     indevs
1478     outdevs
1479 "
1480
1481 AVFILTER_COMPONENTS="
1482     filters
1483 "
1484
1485 AVFORMAT_COMPONENTS="
1486     demuxers
1487     muxers
1488     protocols
1489 "
1490
1491 AVRESAMPLE_COMPONENTS=""
1492
1493 AVUTIL_COMPONENTS=""
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500     $AVRESAMPLE_COMPONENTS
1501     $AVUTIL_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     jack
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vda
1653     vdpau
1654     videotoolbox
1655     v4l2_m2m
1656     xvmc
1657 "
1658
1659 HWACCEL_LIBRARY_NONFREE_LIST="
1660     cuda_sdk
1661     libnpp
1662 "
1663
1664 HWACCEL_LIBRARY_LIST="
1665     $HWACCEL_AUTODETECT_LIBRARY_LIST
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $HWACCEL_LIBRARY_LIST
1739     $FEATURE_LIST
1740     $LICENSE_LIST
1741     $LIBRARY_LIST
1742     $PROGRAM_LIST
1743     $SUBSYSTEM_LIST
1744     autodetect
1745     fontconfig
1746     linux_perf
1747     memory_poisoning
1748     neon_clobber_test
1749     ossfuzz
1750     pic
1751     thumb
1752     valgrind_backtrace
1753     xmm_clobber_test
1754     $COMPONENT_LIST
1755 "
1756
1757 THREADS_LIST="
1758     pthreads
1759     os2threads
1760     w32threads
1761 "
1762
1763 ATOMICS_LIST="
1764     atomics_gcc
1765     atomics_suncc
1766     atomics_win32
1767 "
1768
1769 AUTODETECT_LIBS="
1770     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1771     $HWACCEL_AUTODETECT_LIBRARY_LIST
1772     $THREADS_LIST
1773 "
1774
1775 ARCH_LIST="
1776     aarch64
1777     alpha
1778     arm
1779     avr32
1780     avr32_ap
1781     avr32_uc
1782     bfin
1783     ia64
1784     m68k
1785     mips
1786     mips64
1787     parisc
1788     ppc
1789     ppc64
1790     s390
1791     sh4
1792     sparc
1793     sparc64
1794     tilegx
1795     tilepro
1796     tomi
1797     x86
1798     x86_32
1799     x86_64
1800 "
1801
1802 ARCH_EXT_LIST_ARM="
1803     armv5te
1804     armv6
1805     armv6t2
1806     armv8
1807     neon
1808     vfp
1809     vfpv3
1810     setend
1811 "
1812
1813 ARCH_EXT_LIST_MIPS="
1814     mipsfpu
1815     mips32r2
1816     mips32r5
1817     mips64r2
1818     mips32r6
1819     mips64r6
1820     mipsdsp
1821     mipsdspr2
1822     msa
1823 "
1824
1825 ARCH_EXT_LIST_LOONGSON="
1826     loongson2
1827     loongson3
1828     mmi
1829 "
1830
1831 ARCH_EXT_LIST_X86_SIMD="
1832     aesni
1833     amd3dnow
1834     amd3dnowext
1835     avx
1836     avx2
1837     fma3
1838     fma4
1839     mmx
1840     mmxext
1841     sse
1842     sse2
1843     sse3
1844     sse4
1845     sse42
1846     ssse3
1847     xop
1848 "
1849
1850 ARCH_EXT_LIST_PPC="
1851     altivec
1852     dcbzl
1853     ldbrx
1854     power8
1855     ppc4xx
1856     vsx
1857 "
1858
1859 ARCH_EXT_LIST_X86="
1860     $ARCH_EXT_LIST_X86_SIMD
1861     cpunop
1862     i686
1863 "
1864
1865 ARCH_EXT_LIST="
1866     $ARCH_EXT_LIST_ARM
1867     $ARCH_EXT_LIST_PPC
1868     $ARCH_EXT_LIST_X86
1869     $ARCH_EXT_LIST_MIPS
1870     $ARCH_EXT_LIST_LOONGSON
1871 "
1872
1873 ARCH_FEATURES="
1874     aligned_stack
1875     fast_64bit
1876     fast_clz
1877     fast_cmov
1878     local_aligned_8
1879     local_aligned_16
1880     local_aligned_32
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     altivec_h
1908     arpa_inet_h
1909     asm_types_h
1910     cdio_paranoia_h
1911     cdio_paranoia_paranoia_h
1912     cuda_h
1913     d3d11_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dlfcn_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     mach_mach_time_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     openjpeg_2_2_openjpeg_h
1934     openjpeg_2_1_openjpeg_h
1935     openjpeg_2_0_openjpeg_h
1936     openjpeg_1_5_openjpeg_h
1937     OpenGL_gl3_h
1938     poll_h
1939     soundcard_h
1940     stdatomic_h
1941     sys_mman_h
1942     sys_param_h
1943     sys_resource_h
1944     sys_select_h
1945     sys_soundcard_h
1946     sys_time_h
1947     sys_un_h
1948     sys_videoio_h
1949     termios_h
1950     udplite_h
1951     unistd_h
1952     valgrind_valgrind_h
1953     windows_h
1954     winsock2_h
1955 "
1956
1957 INTRINSICS_LIST="
1958     intrinsics_neon
1959 "
1960
1961 COMPLEX_FUNCS="
1962     cabs
1963     cexp
1964 "
1965
1966 MATH_FUNCS="
1967     atanf
1968     atan2f
1969     cbrt
1970     cbrtf
1971     copysign
1972     cosf
1973     erf
1974     exp2
1975     exp2f
1976     expf
1977     hypot
1978     isfinite
1979     isinf
1980     isnan
1981     ldexpf
1982     llrint
1983     llrintf
1984     log2
1985     log2f
1986     log10f
1987     lrint
1988     lrintf
1989     powf
1990     rint
1991     round
1992     roundf
1993     sinf
1994     trunc
1995     truncf
1996 "
1997
1998 SYSTEM_FUNCS="
1999     access
2000     aligned_malloc
2001     arc4random
2002     clock_gettime
2003     closesocket
2004     CommandLineToArgvW
2005     CoTaskMemFree
2006     CryptGenRandom
2007     fcntl
2008     flt_lim
2009     fork
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     jack_port_get_latency_range
2025     kbhit
2026     LoadLibrary
2027     localtime_r
2028     lstat
2029     lzo1x_999_compress
2030     mach_absolute_time
2031     MapViewOfFile
2032     memalign
2033     mkstemp
2034     mmap
2035     mprotect
2036     nanosleep
2037     PeekNamedPipe
2038     posix_memalign
2039     pthread_cancel
2040     sched_getaffinity
2041     SetConsoleTextAttribute
2042     SetConsoleCtrlHandler
2043     setmode
2044     setrlimit
2045     Sleep
2046     strerror_r
2047     sysconf
2048     sysctl
2049     usleep
2050     UTGetOSTypeFromString
2051     VirtualAlloc
2052     wglGetProcAddress
2053 "
2054
2055 TOOLCHAIN_FEATURES="
2056     as_dn_directive
2057     as_fpu_directive
2058     as_func
2059     as_object_arch
2060     asm_mod_q
2061     attribute_may_alias
2062     attribute_packed
2063     blocks_extension
2064     ebp_available
2065     ebx_available
2066     gnu_as
2067     gnu_windres
2068     ibm_asm
2069     inline_asm_direct_symbol_refs
2070     inline_asm_labels
2071     inline_asm_nonlocal_labels
2072     pragma_deprecated
2073     rsync_contimeout
2074     symver_asm_label
2075     symver_gnu_asm
2076     vfp_args
2077     xform_asm
2078     xmm_clobbers
2079 "
2080
2081 TYPES_LIST="
2082     CONDITION_VARIABLE_Ptr
2083     kCMVideoCodecType_HEVC
2084     socklen_t
2085     struct_addrinfo
2086     struct_group_source_req
2087     struct_ip_mreq_source
2088     struct_ipv6_mreq
2089     struct_msghdr_msg_flags
2090     struct_pollfd
2091     struct_rusage_ru_maxrss
2092     struct_sctp_event_subscribe
2093     struct_sockaddr_in6
2094     struct_sockaddr_sa_len
2095     struct_sockaddr_storage
2096     struct_stat_st_mtim_tv_nsec
2097     struct_v4l2_frmivalenum_discrete
2098 "
2099
2100 HAVE_LIST="
2101     $ARCH_EXT_LIST
2102     $(add_suffix _external $ARCH_EXT_LIST)
2103     $(add_suffix _inline   $ARCH_EXT_LIST)
2104     $ARCH_FEATURES
2105     $ATOMICS_LIST
2106     $BUILTIN_LIST
2107     $COMPLEX_FUNCS
2108     $HAVE_LIST_CMDLINE
2109     $HAVE_LIST_PUB
2110     $HEADERS_LIST
2111     $INTRINSICS_LIST
2112     $MATH_FUNCS
2113     $SYSTEM_FUNCS
2114     $THREADS_LIST
2115     $TOOLCHAIN_FEATURES
2116     $TYPES_LIST
2117     atomics_native
2118     dos_paths
2119     libc_msvcrt
2120     makeinfo
2121     makeinfo_html
2122     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2123     perl
2124     pod2man
2125     section_data_rel_ro
2126     texi2html
2127     threads
2128     uwp
2129     vaapi_drm
2130     vaapi_x11
2131     vdpau_x11
2132     winrt
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     audio_frame_queue
2140     audiodsp
2141     blockdsp
2142     bswapdsp
2143     cabac
2144     dirac_parse
2145     dvprofile
2146     exif
2147     faandct
2148     faanidct
2149     fdctdsp
2150     flacdsp
2151     fmtconvert
2152     frame_thread_encoder
2153     g722dsp
2154     golomb
2155     gplv3
2156     h263dsp
2157     h264chroma
2158     h264dsp
2159     h264parse
2160     h264pred
2161     h264qpel
2162     hevcparse
2163     hpeldsp
2164     huffman
2165     huffyuvdsp
2166     huffyuvencdsp
2167     idctdsp
2168     iirfilter
2169     mdct15
2170     intrax8
2171     iso_media
2172     ividsp
2173     jpegtables
2174     lgplv3
2175     libx262
2176     llauddsp
2177     llviddsp
2178     llvidencdsp
2179     lpc
2180     lzf
2181     me_cmp
2182     mpeg_er
2183     mpegaudio
2184     mpegaudiodsp
2185     mpegaudioheader
2186     mpegvideo
2187     mpegvideoenc
2188     mss34dsp
2189     pixblockdsp
2190     qpeldsp
2191     qsv
2192     qsvdec
2193     qsvenc
2194     rangecoder
2195     riffdec
2196     riffenc
2197     rtpdec
2198     rtpenc_chain
2199     rv34dsp
2200     sinewin
2201     snappy
2202     srtp
2203     startcode
2204     texturedsp
2205     texturedspenc
2206     tpeldsp
2207     vaapi_encode
2208     vc1dsp
2209     videodsp
2210     vp3dsp
2211     vp56dsp
2212     vp8dsp
2213     wma_freqs
2214     wmv2dsp
2215 "
2216
2217 CMDLINE_SELECT="
2218     $ARCH_EXT_LIST
2219     $CONFIG_LIST
2220     $HAVE_LIST_CMDLINE
2221     $THREADS_LIST
2222     asm
2223     cross_compile
2224     debug
2225     extra_warnings
2226     logging
2227     lto
2228     optimizations
2229     rpath
2230     stripping
2231 "
2232
2233 PATHS_LIST="
2234     bindir
2235     datadir
2236     docdir
2237     incdir
2238     libdir
2239     mandir
2240     pkgconfigdir
2241     prefix
2242     shlibdir
2243     install_name_dir
2244 "
2245
2246 CMDLINE_SET="
2247     $PATHS_LIST
2248     ar
2249     arch
2250     as
2251     assert_level
2252     build_suffix
2253     cc
2254     objcc
2255     cpu
2256     cross_prefix
2257     custom_allocator
2258     cxx
2259     dep_cc
2260     doxygen
2261     env
2262     extra_version
2263     gas
2264     host_cc
2265     host_cflags
2266     host_extralibs
2267     host_ld
2268     host_ldflags
2269     host_os
2270     ignore_tests
2271     install
2272     ld
2273     ln_s
2274     logfile
2275     malloc_prefix
2276     nm
2277     optflags
2278     nvccflags
2279     pkg_config
2280     pkg_config_flags
2281     progs_suffix
2282     random_seed
2283     ranlib
2284     samples
2285     strip
2286     sws_max_filter_size
2287     sysinclude
2288     sysroot
2289     target_exec
2290     target_os
2291     target_path
2292     target_samples
2293     tempprefix
2294     toolchain
2295     valgrind
2296     x86asmexe
2297 "
2298
2299 CMDLINE_APPEND="
2300     extra_cflags
2301     extra_cxxflags
2302     extra_objcflags
2303     host_cppflags
2304 "
2305
2306 # code dependency declarations
2307
2308 # architecture extensions
2309
2310 armv5te_deps="arm"
2311 armv6_deps="arm"
2312 armv6t2_deps="arm"
2313 armv8_deps="aarch64"
2314 neon_deps_any="aarch64 arm"
2315 intrinsics_neon_deps="neon"
2316 vfp_deps_any="aarch64 arm"
2317 vfpv3_deps="vfp"
2318 setend_deps="arm"
2319
2320 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2321
2322 loongson2_deps="mips"
2323 loongson3_deps="mips"
2324 mipsfpu_deps="mips"
2325 mipsdsp_deps="mips"
2326 mipsdspr2_deps="mips"
2327 mips32r2_deps="mips"
2328 mips32r5_deps="mips"
2329 mips32r6_deps="mips"
2330 mips64r2_deps="mips"
2331 mips64r6_deps="mips"
2332 msa_deps="mipsfpu"
2333 mmi_deps="mips"
2334
2335 altivec_deps="ppc"
2336 dcbzl_deps="ppc"
2337 ldbrx_deps="ppc"
2338 ppc4xx_deps="ppc"
2339 vsx_deps="altivec"
2340 power8_deps="vsx"
2341
2342 cpunop_deps="i686"
2343 x86_64_select="i686"
2344 x86_64_suggest="fast_cmov"
2345
2346 amd3dnow_deps="mmx"
2347 amd3dnowext_deps="amd3dnow"
2348 i686_deps="x86"
2349 mmx_deps="x86"
2350 mmxext_deps="mmx"
2351 sse_deps="mmxext"
2352 sse2_deps="sse"
2353 sse3_deps="sse2"
2354 ssse3_deps="sse3"
2355 sse4_deps="ssse3"
2356 sse42_deps="sse4"
2357 aesni_deps="sse42"
2358 avx_deps="sse42"
2359 xop_deps="avx"
2360 fma3_deps="avx"
2361 fma4_deps="avx"
2362 avx2_deps="avx"
2363
2364 mmx_external_deps="x86asm"
2365 mmx_inline_deps="inline_asm"
2366 mmx_suggest="mmx_external mmx_inline"
2367
2368 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2369     eval dep=\$${ext}_deps
2370     eval ${ext}_external_deps='"${dep}_external"'
2371     eval ${ext}_inline_deps='"${dep}_inline"'
2372     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2373 done
2374
2375 aligned_stack_if_any="aarch64 ppc x86"
2376 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2377 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2378 fast_unaligned_if_any="aarch64 ppc x86"
2379 simd_align_16_if_any="altivec neon sse"
2380 simd_align_32_if_any="avx"
2381
2382 # system capabilities
2383 symver_if_any="symver_asm_label symver_gnu_asm"
2384 valgrind_backtrace_conflict="optimizations"
2385 valgrind_backtrace_deps="valgrind_valgrind_h"
2386
2387 # threading support
2388 atomics_gcc_if="sync_val_compare_and_swap"
2389 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2390 atomics_win32_if="MemoryBarrier"
2391 atomics_native_if_any="$ATOMICS_LIST"
2392 w32threads_deps="atomics_native"
2393 threads_if_any="$THREADS_LIST"
2394
2395 # subsystems
2396 dct_select="rdft"
2397 dirac_parse_select="golomb"
2398 error_resilience_select="me_cmp"
2399 faandct_deps="faan fdctdsp"
2400 faanidct_deps="faan idctdsp"
2401 h264dsp_select="startcode"
2402 hevcparse_select="golomb"
2403 frame_thread_encoder_deps="encoders threads"
2404 intrax8_select="blockdsp idctdsp"
2405 mdct_select="fft"
2406 mdct15_select="fft"
2407 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2408 mpeg_er_select="error_resilience"
2409 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2410 mpegaudiodsp_select="dct"
2411 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2412 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2413 vc1dsp_select="h264chroma qpeldsp startcode"
2414 rdft_select="fft"
2415
2416 # decoders / encoders
2417 aac_decoder_select="mdct15 mdct sinewin"
2418 aac_fixed_decoder_select="mdct sinewin"
2419 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2420 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2421 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2422 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2423 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2424 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2425 adpcm_g722_decoder_select="g722dsp"
2426 adpcm_g722_encoder_select="g722dsp"
2427 aic_decoder_select="golomb idctdsp"
2428 alac_encoder_select="lpc"
2429 als_decoder_select="bswapdsp"
2430 amrnb_decoder_select="lsp"
2431 amrwb_decoder_select="lsp"
2432 amv_decoder_select="sp5x_decoder exif"
2433 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2434 ape_decoder_select="bswapdsp llauddsp"
2435 apng_decoder_select="zlib"
2436 apng_encoder_select="llvidencdsp zlib"
2437 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2438 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2439 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2440 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2441 atrac1_decoder_select="mdct sinewin"
2442 atrac3_decoder_select="mdct"
2443 atrac3p_decoder_select="mdct sinewin"
2444 avrn_decoder_select="exif jpegtables"
2445 bink_decoder_select="blockdsp hpeldsp"
2446 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2447 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2448 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2449 clearvideo_decoder_select="idctdsp"
2450 cllc_decoder_select="bswapdsp"
2451 comfortnoise_encoder_select="lpc"
2452 cook_decoder_select="audiodsp mdct sinewin"
2453 cscd_decoder_select="lzo"
2454 cscd_decoder_suggest="zlib"
2455 dca_decoder_select="mdct"
2456 dds_decoder_select="texturedsp"
2457 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2458 dnxhd_decoder_select="blockdsp idctdsp"
2459 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2460 dolby_e_decoder_select="mdct"
2461 dvvideo_decoder_select="dvprofile idctdsp"
2462 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2463 dxa_decoder_select="zlib"
2464 dxv_decoder_select="lzf texturedsp"
2465 eac3_decoder_select="ac3_decoder"
2466 eac3_encoder_select="ac3_encoder"
2467 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2468 eatgq_decoder_select="aandcttables"
2469 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2470 exr_decoder_select="zlib"
2471 ffv1_decoder_select="rangecoder"
2472 ffv1_encoder_select="rangecoder"
2473 ffvhuff_decoder_select="huffyuv_decoder"
2474 ffvhuff_encoder_select="huffyuv_encoder"
2475 fic_decoder_select="golomb"
2476 flac_decoder_select="flacdsp"
2477 flac_encoder_select="bswapdsp flacdsp lpc"
2478 flashsv2_decoder_select="zlib"
2479 flashsv2_encoder_select="zlib"
2480 flashsv_decoder_select="zlib"
2481 flashsv_encoder_select="zlib"
2482 flv_decoder_select="h263_decoder"
2483 flv_encoder_select="h263_encoder"
2484 fourxm_decoder_select="blockdsp bswapdsp"
2485 fraps_decoder_select="bswapdsp huffman"
2486 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2487 g729_decoder_select="audiodsp"
2488 h261_decoder_select="mpegvideo"
2489 h261_encoder_select="aandcttables mpegvideoenc"
2490 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2491 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2492 h263i_decoder_select="h263_decoder"
2493 h263p_decoder_select="h263_decoder"
2494 h263p_encoder_select="h263_encoder"
2495 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2496 h264_decoder_suggest="error_resilience"
2497 hap_decoder_select="snappy texturedsp"
2498 hap_encoder_deps="libsnappy"
2499 hap_encoder_select="texturedspenc"
2500 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2501 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2502 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2503 iac_decoder_select="imc_decoder"
2504 imc_decoder_select="bswapdsp fft mdct sinewin"
2505 indeo3_decoder_select="hpeldsp"
2506 indeo4_decoder_select="ividsp"
2507 indeo5_decoder_select="ividsp"
2508 interplay_video_decoder_select="hpeldsp"
2509 jpegls_decoder_select="mjpeg_decoder"
2510 jv_decoder_select="blockdsp"
2511 lagarith_decoder_select="llviddsp"
2512 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2513 magicyuv_decoder_select="llviddsp"
2514 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2515 metasound_decoder_select="lsp mdct sinewin"
2516 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2517 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2518 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2519 mjpegb_decoder_select="mjpeg_decoder"
2520 mlp_decoder_select="mlp_parser"
2521 mlp_encoder_select="lpc"
2522 motionpixels_decoder_select="bswapdsp"
2523 mp1_decoder_select="mpegaudio"
2524 mp1float_decoder_select="mpegaudio"
2525 mp2_decoder_select="mpegaudio"
2526 mp2float_decoder_select="mpegaudio"
2527 mp3_decoder_select="mpegaudio"
2528 mp3adu_decoder_select="mpegaudio"
2529 mp3adufloat_decoder_select="mpegaudio"
2530 mp3float_decoder_select="mpegaudio"
2531 mp3on4_decoder_select="mpegaudio"
2532 mp3on4float_decoder_select="mpegaudio"
2533 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2534 mpc8_decoder_select="mpegaudiodsp"
2535 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2536 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2537 mpegvideo_decoder_select="mpegvideo"
2538 mpeg1video_decoder_select="mpegvideo"
2539 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2540 mpeg2video_decoder_select="mpegvideo"
2541 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2542 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2543 mpeg4_encoder_select="h263_encoder"
2544 msa1_decoder_select="mss34dsp"
2545 mscc_decoder_select="zlib"
2546 msmpeg4v1_decoder_select="h263_decoder"
2547 msmpeg4v2_decoder_select="h263_decoder"
2548 msmpeg4v2_encoder_select="h263_encoder"
2549 msmpeg4v3_decoder_select="h263_decoder"
2550 msmpeg4v3_encoder_select="h263_encoder"
2551 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2552 mts2_decoder_select="mss34dsp"
2553 mxpeg_decoder_select="mjpeg_decoder"
2554 nellymoser_decoder_select="mdct sinewin"
2555 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2556 nuv_decoder_select="idctdsp lzo"
2557 on2avc_decoder_select="mdct"
2558 opus_decoder_deps="swresample"
2559 opus_decoder_select="mdct15"
2560 opus_encoder_select="audio_frame_queue mdct15"
2561 png_decoder_select="zlib"
2562 png_encoder_select="llvidencdsp zlib"
2563 prores_decoder_select="blockdsp idctdsp"
2564 prores_encoder_select="fdctdsp"
2565 qcelp_decoder_select="lsp"
2566 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2567 ra_144_decoder_select="audiodsp"
2568 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2569 ralf_decoder_select="golomb"
2570 rawvideo_decoder_select="bswapdsp"
2571 rscc_decoder_select="zlib"
2572 rtjpeg_decoder_select="me_cmp"
2573 rv10_decoder_select="h263_decoder"
2574 rv10_encoder_select="h263_encoder"
2575 rv20_decoder_select="h263_decoder"
2576 rv20_encoder_select="h263_encoder"
2577 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2578 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2579 screenpresso_decoder_select="zlib"
2580 shorten_decoder_select="bswapdsp"
2581 sipr_decoder_select="lsp"
2582 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2583 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2584 sonic_decoder_select="golomb rangecoder"
2585 sonic_encoder_select="golomb rangecoder"
2586 sonic_ls_encoder_select="golomb rangecoder"
2587 sp5x_decoder_select="mjpeg_decoder"
2588 srgc_decoder_select="zlib"
2589 svq1_decoder_select="hpeldsp"
2590 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2591 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2592 svq3_decoder_suggest="zlib"
2593 tak_decoder_select="audiodsp"
2594 tdsc_decoder_select="zlib mjpeg_decoder"
2595 theora_decoder_select="vp3_decoder"
2596 thp_decoder_select="mjpeg_decoder"
2597 tiff_decoder_suggest="zlib lzma"
2598 tiff_encoder_suggest="zlib"
2599 truehd_decoder_select="mlp_parser"
2600 truehd_encoder_select="lpc"
2601 truemotion2_decoder_select="bswapdsp"
2602 truespeech_decoder_select="bswapdsp"
2603 tscc_decoder_select="zlib"
2604 twinvq_decoder_select="mdct lsp sinewin"
2605 txd_decoder_select="texturedsp"
2606 utvideo_decoder_select="bswapdsp llviddsp"
2607 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2608 vble_decoder_select="llviddsp"
2609 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2610 vc1_qsv_decoder_deps="libmfx"
2611 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2612 vc1image_decoder_select="vc1_decoder"
2613 vorbis_decoder_select="mdct"
2614 vorbis_encoder_select="mdct"
2615 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2616 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2617 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2618 vp6a_decoder_select="vp6_decoder"
2619 vp6f_decoder_select="vp6_decoder"
2620 vp7_decoder_select="h264pred videodsp vp8dsp"
2621 vp8_decoder_select="h264pred videodsp vp8dsp"
2622 vp9_decoder_select="videodsp vp9_parser"
2623 webp_decoder_select="vp8_decoder exif"
2624 wmalossless_decoder_select="llauddsp"
2625 wmapro_decoder_select="mdct sinewin wma_freqs"
2626 wmav1_decoder_select="mdct sinewin wma_freqs"
2627 wmav1_encoder_select="mdct sinewin wma_freqs"
2628 wmav2_decoder_select="mdct sinewin wma_freqs"
2629 wmav2_encoder_select="mdct sinewin wma_freqs"
2630 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2631 wmv1_decoder_select="h263_decoder"
2632 wmv1_encoder_select="h263_encoder"
2633 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2634 wmv2_encoder_select="h263_encoder wmv2dsp"
2635 wmv3_decoder_select="vc1_decoder"
2636 wmv3image_decoder_select="wmv3_decoder"
2637 xma1_decoder_select="wmapro_decoder"
2638 xma2_decoder_select="wmapro_decoder"
2639 zerocodec_decoder_select="zlib"
2640 zlib_decoder_select="zlib"
2641 zlib_encoder_select="zlib"
2642 zmbv_decoder_select="zlib"
2643 zmbv_encoder_select="zlib"
2644
2645 # hardware accelerators
2646 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2647 cuda_deps_any="libdl LoadLibrary"
2648 cuvid_deps="cuda"
2649 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2650 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2651 dxva2_extralibs="-luser32"
2652 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2653 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2654 vda_deps="vda_framework pthreads"
2655 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2656 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2657 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2658 xvmc_deps="X11_extensions_XvMClib_h"
2659
2660 h263_vaapi_hwaccel_deps="vaapi"
2661 h263_vaapi_hwaccel_select="h263_decoder"
2662 h263_videotoolbox_hwaccel_deps="videotoolbox"
2663 h263_videotoolbox_hwaccel_select="h263_decoder"
2664 h264_cuvid_hwaccel_deps="cuda cuvid"
2665 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2666 h264_d3d11va_hwaccel_deps="d3d11va"
2667 h264_d3d11va_hwaccel_select="h264_decoder"
2668 h264_d3d11va2_hwaccel_deps="d3d11va"
2669 h264_d3d11va2_hwaccel_select="h264_decoder"
2670 h264_dxva2_hwaccel_deps="dxva2"
2671 h264_dxva2_hwaccel_select="h264_decoder"
2672 h264_mediacodec_hwaccel_deps="mediacodec"
2673 h264_mmal_hwaccel_deps="mmal"
2674 h264_qsv_hwaccel_deps="libmfx"
2675 h264_vaapi_hwaccel_deps="vaapi"
2676 h264_vaapi_hwaccel_select="h264_decoder"
2677 h264_vda_hwaccel_deps="vda"
2678 h264_vda_hwaccel_select="h264_decoder"
2679 h264_vda_old_hwaccel_deps="vda"
2680 h264_vda_old_hwaccel_select="h264_decoder"
2681 h264_vdpau_hwaccel_deps="vdpau"
2682 h264_vdpau_hwaccel_select="h264_decoder"
2683 h264_videotoolbox_hwaccel_deps="videotoolbox"
2684 h264_videotoolbox_hwaccel_select="h264_decoder"
2685 hevc_cuvid_hwaccel_deps="cuda cuvid"
2686 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2687 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va_hwaccel_select="hevc_decoder"
2689 hevc_mediacodec_hwaccel_deps="mediacodec"
2690 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2692 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2693 hevc_dxva2_hwaccel_select="hevc_decoder"
2694 hevc_qsv_hwaccel_deps="libmfx"
2695 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2696 hevc_vaapi_hwaccel_select="hevc_decoder"
2697 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2698 hevc_vdpau_hwaccel_select="hevc_decoder"
2699 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2700 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2701 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2702 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2703 mpeg_xvmc_hwaccel_deps="xvmc"
2704 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2705 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2706 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2707 mpeg1_vdpau_hwaccel_deps="vdpau"
2708 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2710 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_xvmc_hwaccel_deps="xvmc"
2712 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2713 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2714 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2715 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2718 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_dxva2_hwaccel_deps="dxva2"
2720 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2722 mpeg2_mmal_hwaccel_deps="mmal"
2723 mpeg2_qsv_hwaccel_deps="libmfx"
2724 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2725 mpeg2_vaapi_hwaccel_deps="vaapi"
2726 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_vdpau_hwaccel_deps="vdpau"
2728 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2730 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_xvmc_hwaccel_deps="xvmc"
2732 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2733 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2734 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2735 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2736 mpeg4_mmal_hwaccel_deps="mmal"
2737 mpeg4_vaapi_hwaccel_deps="vaapi"
2738 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2739 mpeg4_vdpau_hwaccel_deps="vdpau"
2740 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2741 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2742 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2743 vc1_cuvid_hwaccel_deps="cuda cuvid"
2744 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2745 vc1_d3d11va_hwaccel_deps="d3d11va"
2746 vc1_d3d11va_hwaccel_select="vc1_decoder"
2747 vc1_d3d11va2_hwaccel_deps="d3d11va"
2748 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2749 vc1_dxva2_hwaccel_deps="dxva2"
2750 vc1_dxva2_hwaccel_select="vc1_decoder"
2751 vc1_mmal_hwaccel_deps="mmal"
2752 vc1_qsv_hwaccel_deps="libmfx"
2753 vc1_qsv_hwaccel_select="qsvdec_vc1"
2754 vc1_vaapi_hwaccel_deps="vaapi"
2755 vc1_vaapi_hwaccel_select="vc1_decoder"
2756 vc1_vdpau_hwaccel_deps="vdpau"
2757 vc1_vdpau_hwaccel_select="vc1_decoder"
2758 vp8_cuvid_hwaccel_deps="cuda cuvid"
2759 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2760 vp9_cuvid_hwaccel_deps="cuda cuvid"
2761 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2762 vp8_mediacodec_hwaccel_deps="mediacodec"
2763 vp8_qsv_hwaccel_deps="libmfx"
2764 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va_hwaccel_select="vp9_decoder"
2766 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2768 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2769 vp9_dxva2_hwaccel_select="vp9_decoder"
2770 vp9_mediacodec_hwaccel_deps="mediacodec"
2771 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2772 vp9_vaapi_hwaccel_select="vp9_decoder"
2773 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2774 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2775 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2776 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2777 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2778
2779 # hardware-accelerated codecs
2780 omx_deps="libdl pthreads"
2781 omx_rpi_select="omx"
2782 qsvdec_select="qsv"
2783 qsvenc_select="qsv"
2784 vaapi_encode_deps="vaapi"
2785 v4l2_m2m_deps_any="linux_videodev2_h"
2786
2787 hwupload_cuda_filter_deps="cuda"
2788 scale_npp_filter_deps="cuda libnpp"
2789 scale_cuda_filter_deps="cuda_sdk"
2790 thumbnail_cuda_filter_deps="cuda_sdk"
2791
2792 nvenc_deps="cuda"
2793 nvenc_deps_any="libdl LoadLibrary"
2794 nvenc_encoder_deps="nvenc"
2795
2796 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2798 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2799 h264_cuvid_decoder_deps="cuda cuvid"
2800 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2801 h264_mediacodec_decoder_deps="mediacodec"
2802 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2803 h264_mmal_decoder_deps="mmal"
2804 h264_nvenc_encoder_deps="nvenc"
2805 h264_omx_encoder_deps="omx"
2806 h264_qsv_decoder_deps="libmfx"
2807 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2808 h264_qsv_encoder_deps="libmfx"
2809 h264_qsv_encoder_select="qsvenc"
2810 h264_rkmpp_decoder_deps="rkmpp"
2811 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2812 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2813 h264_vaapi_encoder_select="vaapi_encode golomb"
2814 h264_vda_decoder_deps="vda"
2815 h264_vda_decoder_select="h264_decoder"
2816 h264_vdpau_decoder_deps="vdpau"
2817 h264_vdpau_decoder_select="h264_decoder"
2818 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 hevc_cuvid_decoder_deps="cuda cuvid"
2821 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_mediacodec_decoder_deps="mediacodec"
2823 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2824 hevc_nvenc_encoder_deps="nvenc"
2825 hevc_qsv_decoder_deps="libmfx"
2826 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2827 hevc_qsv_encoder_deps="libmfx"
2828 hevc_qsv_encoder_select="hevcparse qsvenc"
2829 hevc_rkmpp_decoder_deps="rkmpp"
2830 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2831 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2832 hevc_vaapi_encoder_select="vaapi_encode golomb"
2833 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2834 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2835 mjpeg_cuvid_decoder_deps="cuda cuvid"
2836 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2837 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2838 mpeg1_cuvid_decoder_deps="cuda cuvid"
2839 mpeg1_vdpau_decoder_deps="vdpau"
2840 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2841 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2842 mpeg2_crystalhd_decoder_select="crystalhd"
2843 mpeg2_cuvid_decoder_deps="cuda cuvid"
2844 mpeg2_mmal_decoder_deps="mmal"
2845 mpeg2_mediacodec_decoder_deps="mediacodec"
2846 mpeg2_qsv_decoder_deps="libmfx"
2847 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2848 mpeg2_qsv_encoder_deps="libmfx"
2849 mpeg2_qsv_encoder_select="qsvenc"
2850 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2851 mpeg2_vaapi_encoder_select="vaapi_encode"
2852 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2853 mpeg4_crystalhd_decoder_select="crystalhd"
2854 mpeg4_cuvid_decoder_deps="cuda cuvid"
2855 mpeg4_mediacodec_decoder_deps="mediacodec"
2856 mpeg4_mmal_decoder_deps="mmal"
2857 mpeg4_omx_encoder_deps="omx"
2858 mpeg4_vdpau_decoder_deps="vdpau"
2859 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2860 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2861 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2862 mpeg_vdpau_decoder_deps="vdpau"
2863 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2864 msmpeg4_crystalhd_decoder_select="crystalhd"
2865 nvenc_h264_encoder_select="h264_nvenc_encoder"
2866 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2867 vc1_crystalhd_decoder_select="crystalhd"
2868 vc1_cuvid_decoder_deps="cuda cuvid"
2869 vc1_mmal_decoder_deps="mmal"
2870 vc1_vdpau_decoder_deps="vdpau"
2871 vc1_vdpau_decoder_select="vc1_decoder"
2872 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2873 vp8_cuvid_decoder_deps="cuda cuvid"
2874 vp8_mediacodec_decoder_deps="mediacodec"
2875 vp8_qsv_decoder_deps="libmfx"
2876 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2877 vp8_rkmpp_decoder_deps="rkmpp"
2878 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2879 vp8_vaapi_encoder_select="vaapi_encode"
2880 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2881 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2882 vp9_cuvid_decoder_deps="cuda cuvid"
2883 vp9_mediacodec_decoder_deps="mediacodec"
2884 vp9_rkmpp_decoder_deps="rkmpp"
2885 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2886 vp9_vaapi_encoder_select="vaapi_encode"
2887 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2888 wmv3_crystalhd_decoder_select="crystalhd"
2889 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2890
2891 # parsers
2892 h264_parser_select="golomb h264dsp h264parse"
2893 hevc_parser_select="hevcparse"
2894 mpegaudio_parser_select="mpegaudioheader"
2895 mpegvideo_parser_select="mpegvideo"
2896 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2897 vc1_parser_select="vc1dsp"
2898
2899 # bitstream_filters
2900 mjpeg2jpeg_bsf_select="jpegtables"
2901
2902 # external libraries
2903 aac_at_decoder_deps="audiotoolbox"
2904 ac3_at_decoder_deps="audiotoolbox"
2905 ac3_at_decoder_select="ac3_parser"
2906 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2907 alac_at_decoder_deps="audiotoolbox"
2908 amr_nb_at_decoder_deps="audiotoolbox"
2909 avisynth_deps_any="libdl LoadLibrary"
2910 avisynth_demuxer_deps="avisynth"
2911 avisynth_demuxer_select="riffdec"
2912 eac3_at_decoder_deps="audiotoolbox"
2913 eac3_at_decoder_select="ac3_parser"
2914 gsm_ms_at_decoder_deps="audiotoolbox"
2915 ilbc_at_decoder_deps="audiotoolbox"
2916 mp1_at_decoder_deps="audiotoolbox"
2917 mp2_at_decoder_deps="audiotoolbox"
2918 mp3_at_decoder_deps="audiotoolbox"
2919 mp1_at_decoder_select="mpegaudioheader"
2920 mp2_at_decoder_select="mpegaudioheader"
2921 mp3_at_decoder_select="mpegaudioheader"
2922 pcm_alaw_at_decoder_deps="audiotoolbox"
2923 pcm_mulaw_at_decoder_deps="audiotoolbox"
2924 qdmc_at_decoder_deps="audiotoolbox"
2925 qdm2_at_decoder_deps="audiotoolbox"
2926 aac_at_encoder_deps="audiotoolbox"
2927 aac_at_encoder_select="audio_frame_queue"
2928 alac_at_encoder_deps="audiotoolbox"
2929 alac_at_encoder_select="audio_frame_queue"
2930 ilbc_at_encoder_deps="audiotoolbox"
2931 ilbc_at_encoder_select="audio_frame_queue"
2932 pcm_alaw_at_encoder_deps="audiotoolbox"
2933 pcm_alaw_at_encoder_select="audio_frame_queue"
2934 pcm_mulaw_at_encoder_deps="audiotoolbox"
2935 pcm_mulaw_at_encoder_select="audio_frame_queue"
2936 chromaprint_muxer_deps="chromaprint"
2937 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2938 libcelt_decoder_deps="libcelt"
2939 libfdk_aac_decoder_deps="libfdk_aac"
2940 libfdk_aac_encoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_select="audio_frame_queue"
2942 libgme_demuxer_deps="libgme"
2943 libgsm_decoder_deps="libgsm"
2944 libgsm_encoder_deps="libgsm"
2945 libgsm_ms_decoder_deps="libgsm"
2946 libgsm_ms_encoder_deps="libgsm"
2947 libilbc_decoder_deps="libilbc"
2948 libilbc_encoder_deps="libilbc"
2949 libkvazaar_encoder_deps="libkvazaar"
2950 libmodplug_demuxer_deps="libmodplug"
2951 libmp3lame_encoder_deps="libmp3lame"
2952 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2953 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2954 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_select="audio_frame_queue"
2956 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2957 libopenh264_decoder_deps="libopenh264"
2958 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2959 libopenh264_encoder_deps="libopenh264"
2960 libopenjpeg_decoder_deps="libopenjpeg"
2961 libopenjpeg_encoder_deps="libopenjpeg"
2962 libopenmpt_demuxer_deps="libopenmpt"
2963 libopus_decoder_deps="libopus"
2964 libopus_encoder_deps="libopus"
2965 libopus_encoder_select="audio_frame_queue"
2966 librsvg_decoder_deps="librsvg"
2967 libshine_encoder_deps="libshine"
2968 libshine_encoder_select="audio_frame_queue"
2969 libspeex_decoder_deps="libspeex"
2970 libspeex_encoder_deps="libspeex"
2971 libspeex_encoder_select="audio_frame_queue"
2972 libtheora_encoder_deps="libtheora"
2973 libtwolame_encoder_deps="libtwolame"
2974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2975 libvorbis_decoder_deps="libvorbis"
2976 libvorbis_encoder_deps="libvorbis"
2977 libvorbis_encoder_select="audio_frame_queue"
2978 libvpx_vp8_decoder_deps="libvpx"
2979 libvpx_vp8_encoder_deps="libvpx"
2980 libvpx_vp9_decoder_deps="libvpx"
2981 libvpx_vp9_encoder_deps="libvpx"
2982 libwavpack_encoder_deps="libwavpack"
2983 libwavpack_encoder_select="audio_frame_queue"
2984 libwebp_encoder_deps="libwebp"
2985 libwebp_anim_encoder_deps="libwebp"
2986 libx262_encoder_deps="libx262"
2987 libx264_encoder_deps="libx264"
2988 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2989 libx264rgb_encoder_select="libx264_encoder"
2990 libx265_encoder_deps="libx265"
2991 libxavs_encoder_deps="libxavs"
2992 libxvid_encoder_deps="libxvid"
2993 libzvbi_teletext_decoder_deps="libzvbi"
2994 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2995 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2996 videotoolbox_encoder_suggest="vda_framework"
2997
2998 # demuxers / muxers
2999 ac3_demuxer_select="ac3_parser"
3000 aiff_muxer_select="iso_media"
3001 asf_demuxer_select="riffdec"
3002 asf_o_demuxer_select="riffdec"
3003 asf_muxer_select="riffenc"
3004 asf_stream_muxer_select="asf_muxer"
3005 avi_demuxer_select="iso_media riffdec exif"
3006 avi_muxer_select="riffenc"
3007 caf_demuxer_select="iso_media riffdec"
3008 caf_muxer_select="iso_media"
3009 dash_muxer_select="mp4_muxer"
3010 dash_demuxer_deps="libxml2"
3011 dirac_demuxer_select="dirac_parser"
3012 dts_demuxer_select="dca_parser"
3013 dtshd_demuxer_select="dca_parser"
3014 dv_demuxer_select="dvprofile"
3015 dv_muxer_select="dvprofile"
3016 dxa_demuxer_select="riffdec"
3017 eac3_demuxer_select="ac3_parser"
3018 f4v_muxer_select="mov_muxer"
3019 fifo_muxer_deps="threads"
3020 flac_demuxer_select="flac_parser"
3021 hds_muxer_select="flv_muxer"
3022 hls_muxer_select="mpegts_muxer"
3023 image2_alias_pix_demuxer_select="image2_demuxer"
3024 image2_brender_pix_demuxer_select="image2_demuxer"
3025 ipod_muxer_select="mov_muxer"
3026 ismv_muxer_select="mov_muxer"
3027 matroska_audio_muxer_select="matroska_muxer"
3028 matroska_demuxer_select="iso_media riffdec"
3029 matroska_demuxer_suggest="bzlib lzo zlib"
3030 matroska_muxer_select="iso_media riffenc"
3031 mmf_muxer_select="riffenc"
3032 mov_demuxer_select="iso_media riffdec"
3033 mov_demuxer_suggest="zlib"
3034 mov_muxer_select="iso_media riffenc rtpenc_chain"
3035 mp3_demuxer_select="mpegaudio_parser"
3036 mp3_muxer_select="mpegaudioheader"
3037 mp4_muxer_select="mov_muxer"
3038 mpegts_demuxer_select="iso_media"
3039 mpegts_muxer_select="adts_muxer latm_muxer"
3040 mpegtsraw_demuxer_select="mpegts_demuxer"
3041 mxf_d10_muxer_select="mxf_muxer"
3042 mxf_opatom_muxer_select="mxf_muxer"
3043 nut_muxer_select="riffenc"
3044 nuv_demuxer_select="riffdec"
3045 oga_muxer_select="ogg_muxer"
3046 ogg_demuxer_select="dirac_parse"
3047 ogv_muxer_select="ogg_muxer"
3048 opus_muxer_select="ogg_muxer"
3049 psp_muxer_select="mov_muxer"
3050 rtp_demuxer_select="sdp_demuxer"
3051 rtp_muxer_select="golomb"
3052 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3053 rtsp_demuxer_select="http_protocol rtpdec"
3054 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3055 sap_demuxer_select="sdp_demuxer"
3056 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3057 sdp_demuxer_select="rtpdec"
3058 smoothstreaming_muxer_select="ismv_muxer"
3059 spdif_muxer_select="aac_parser"
3060 spx_muxer_select="ogg_muxer"
3061 swf_demuxer_suggest="zlib"
3062 tak_demuxer_select="tak_parser"
3063 tg2_muxer_select="mov_muxer"
3064 tgp_muxer_select="mov_muxer"
3065 vobsub_demuxer_select="mpegps_demuxer"
3066 w64_demuxer_select="wav_demuxer"
3067 w64_muxer_select="wav_muxer"
3068 wav_demuxer_select="riffdec"
3069 wav_muxer_select="riffenc"
3070 webm_muxer_select="iso_media riffenc"
3071 webm_dash_manifest_demuxer_select="matroska_demuxer"
3072 wtv_demuxer_select="mpegts_demuxer riffdec"
3073 wtv_muxer_select="mpegts_muxer riffenc"
3074 xmv_demuxer_select="riffdec"
3075 xwma_demuxer_select="riffdec"
3076
3077 # indevs / outdevs
3078 alsa_indev_deps="alsa"
3079 alsa_outdev_deps="alsa"
3080 avfoundation_indev_deps="avfoundation pthreads"
3081 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3082 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3083 caca_outdev_deps="libcaca"
3084 decklink_indev_deps="decklink threads libdl"
3085 decklink_indev_extralibs="-lstdc++"
3086 decklink_outdev_deps="decklink threads libdl"
3087 decklink_outdev_extralibs="-lstdc++"
3088 libndi_newtek_indev_deps="libndi_newtek libdl"
3089 libndi_newtek_indev_extralibs="-lndi"
3090 libndi_newtek_outdev_deps="libndi_newtek libdl"
3091 libndi_newtek_outdev_extralibs="-lndi"
3092 dshow_indev_deps="IBaseFilter"
3093 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3094 fbdev_indev_deps="linux_fb_h"
3095 fbdev_outdev_deps="linux_fb_h"
3096 gdigrab_indev_deps="CreateDIBSection"
3097 gdigrab_indev_extralibs="-lgdi32"
3098 gdigrab_indev_select="bmp_decoder"
3099 iec61883_indev_deps="libiec61883"
3100 jack_indev_deps="jack"
3101 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3102 kmsgrab_indev_deps="libdrm"
3103 lavfi_indev_deps="avfilter"
3104 libcdio_indev_deps="libcdio"
3105 libdc1394_indev_deps="libdc1394"
3106 libv4l2_indev_deps="libv4l2"
3107 openal_indev_deps="openal"
3108 opengl_outdev_deps="opengl"
3109 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3110 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3111 pulse_indev_deps="libpulse"
3112 pulse_outdev_deps="libpulse"
3113 sdl2_outdev_deps="sdl2"
3114 sndio_indev_deps="sndio"
3115 sndio_outdev_deps="sndio"
3116 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3118 vfwcap_indev_deps="vfw32 vfwcap_defines"
3119 xcbgrab_indev_deps="libxcb"
3120 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3121 xv_outdev_extralibs="-lXv -lX11 -lXext"
3122
3123 # protocols
3124 async_protocol_deps="threads"
3125 bluray_protocol_deps="libbluray"
3126 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3127 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3128 ffrtmpcrypt_protocol_select="tcp_protocol"
3129 ffrtmphttp_protocol_conflict="librtmp_protocol"
3130 ffrtmphttp_protocol_select="http_protocol"
3131 ftp_protocol_select="tcp_protocol"
3132 gopher_protocol_select="network"
3133 http_protocol_select="tcp_protocol"
3134 httpproxy_protocol_select="tcp_protocol"
3135 https_protocol_select="tls_protocol"
3136 icecast_protocol_select="http_protocol"
3137 librtmp_protocol_deps="librtmp"
3138 librtmpe_protocol_deps="librtmp"
3139 librtmps_protocol_deps="librtmp"
3140 librtmpt_protocol_deps="librtmp"
3141 librtmpte_protocol_deps="librtmp"
3142 libsmbclient_protocol_deps="libsmbclient gplv3"
3143 libssh_protocol_deps="libssh"
3144 mmsh_protocol_select="http_protocol"
3145 mmst_protocol_select="network"
3146 rtmp_protocol_conflict="librtmp_protocol"
3147 rtmp_protocol_select="tcp_protocol"
3148 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3149 rtmps_protocol_conflict="librtmp_protocol"
3150 rtmps_protocol_select="tls_protocol"
3151 rtmpt_protocol_select="ffrtmphttp_protocol"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3154 rtp_protocol_select="udp_protocol"
3155 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3156 sctp_protocol_select="network"
3157 srtp_protocol_select="rtp_protocol srtp"
3158 tcp_protocol_select="network"
3159 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3160 tls_gnutls_protocol_deps="gnutls"
3161 tls_gnutls_protocol_select="tcp_protocol"
3162 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3163 tls_openssl_protocol_deps="openssl"
3164 tls_openssl_protocol_select="tcp_protocol"
3165 tls_schannel_protocol_deps="schannel"
3166 tls_schannel_protocol_select="tcp_protocol"
3167 tls_securetransport_protocol_deps="securetransport"
3168 tls_securetransport_protocol_select="tcp_protocol"
3169 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3170 udp_protocol_select="network"
3171 udplite_protocol_select="network"
3172 unix_protocol_deps="sys_un_h"
3173 unix_protocol_select="network"
3174
3175 # filters
3176 afftfilt_filter_deps="avcodec"
3177 afftfilt_filter_select="fft"
3178 afir_filter_deps="avcodec"
3179 afir_filter_select="fft"
3180 amovie_filter_deps="avcodec avformat"
3181 aresample_filter_deps="swresample"
3182 ass_filter_deps="libass"
3183 atempo_filter_deps="avcodec"
3184 atempo_filter_select="rdft"
3185 azmq_filter_deps="libzmq"
3186 blackframe_filter_deps="gpl"
3187 boxblur_filter_deps="gpl"
3188 bs2b_filter_deps="libbs2b"
3189 colormatrix_filter_deps="gpl"
3190 coreimage_filter_deps="coreimage appkit"
3191 coreimage_filter_extralibs="-framework OpenGL"
3192 coreimagesrc_filter_deps="coreimage appkit"
3193 coreimagesrc_filter_extralibs="-framework OpenGL"
3194 cover_rect_filter_deps="avcodec avformat gpl"
3195 cropdetect_filter_deps="gpl"
3196 deinterlace_qsv_filter_deps="libmfx"
3197 deinterlace_vaapi_filter_deps="vaapi"
3198 delogo_filter_deps="gpl"
3199 deshake_filter_select="pixelutils"
3200 drawtext_filter_deps="libfreetype"
3201 elbg_filter_deps="avcodec"
3202 eq_filter_deps="gpl"
3203 fftfilt_filter_deps="avcodec"
3204 fftfilt_filter_select="rdft"
3205 find_rect_filter_deps="avcodec avformat gpl"
3206 firequalizer_filter_deps="avcodec"
3207 firequalizer_filter_select="rdft"
3208 flite_filter_deps="libflite"
3209 framerate_filter_select="pixelutils"
3210 frei0r_filter_deps="frei0r libdl"
3211 frei0r_src_filter_deps="frei0r libdl"
3212 fspp_filter_deps="gpl"
3213 geq_filter_deps="gpl"
3214 histeq_filter_deps="gpl"
3215 hqdn3d_filter_deps="gpl"
3216 interlace_filter_deps="gpl"
3217 kerndeint_filter_deps="gpl"
3218 ladspa_filter_deps="ladspa libdl"
3219 mcdeint_filter_deps="avcodec gpl"
3220 movie_filter_deps="avcodec avformat"
3221 mpdecimate_filter_deps="gpl"
3222 mpdecimate_filter_select="pixelutils"
3223 mptestsrc_filter_deps="gpl"
3224 negate_filter_deps="lut_filter"
3225 nnedi_filter_deps="gpl"
3226 ocr_filter_deps="libtesseract"
3227 ocv_filter_deps="libopencv"
3228 owdenoise_filter_deps="gpl"
3229 pan_filter_deps="swresample"
3230 perspective_filter_deps="gpl"
3231 phase_filter_deps="gpl"
3232 pp7_filter_deps="gpl"
3233 pp_filter_deps="gpl postproc"
3234 pullup_filter_deps="gpl"
3235 removelogo_filter_deps="avcodec avformat swscale"
3236 repeatfields_filter_deps="gpl"
3237 resample_filter_deps="avresample"
3238 rubberband_filter_deps="librubberband"
3239 sab_filter_deps="gpl swscale"
3240 scale2ref_filter_deps="swscale"
3241 scale_filter_deps="swscale"
3242 scale_qsv_filter_deps="libmfx"
3243 select_filter_select="pixelutils"
3244 showcqt_filter_deps="avcodec avformat swscale"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 uspp_filter_deps="gpl avcodec"
3269 vaguedenoiser_filter_deps="gpl"
3270 vidstabdetect_filter_deps="libvidstab"
3271 vidstabtransform_filter_deps="libvidstab"
3272 libvmaf_filter_deps="libvmaf"
3273 zmq_filter_deps="libzmq"
3274 zoompan_filter_deps="swscale"
3275 zscale_filter_deps="libzimg const_nan"
3276 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3277
3278 # examples
3279 avio_dir_cmd_deps="avformat avutil"
3280 avio_reading_deps="avformat avcodec avutil"
3281 decode_audio_example_deps="avcodec avutil"
3282 decode_video_example_deps="avcodec avutil"
3283 demuxing_decoding_example_deps="avcodec avformat avutil"
3284 encode_audio_example_deps="avcodec avutil"
3285 encode_video_example_deps="avcodec avutil"
3286 extract_mvs_example_deps="avcodec avformat avutil"
3287 filter_audio_example_deps="avfilter avutil"
3288 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3289 filtering_video_example_deps="avfilter avcodec avformat avutil"
3290 http_multiclient_example_deps="avformat avutil fork"
3291 hw_decode_example_deps="avcodec avformat avutil"
3292 metadata_example_deps="avformat avutil"
3293 muxing_example_deps="avcodec avformat avutil swscale"
3294 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3295 remuxing_example_deps="avcodec avformat avutil"
3296 resampling_audio_example_deps="avutil swresample"
3297 scaling_video_example_deps="avutil swscale"
3298 transcode_aac_example_deps="avcodec avformat swresample"
3299 transcoding_example_deps="avfilter avcodec avformat avutil"
3300
3301 # libraries, in linking order
3302 avcodec_deps="avutil"
3303 avcodec_select="null_bsf"
3304 avdevice_deps="avformat avcodec avutil"
3305 avfilter_deps="avutil"
3306 avformat_deps="avcodec avutil"
3307 avformat_suggest="network"
3308 avresample_deps="avutil"
3309 postproc_deps="avutil gpl"
3310 swresample_deps="avutil"
3311 swscale_deps="avutil"
3312
3313 # programs
3314 ffmpeg_deps="avcodec avfilter avformat swresample"
3315 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3316                null_filter
3317                trim_filter"
3318 ffplay_deps="avcodec avformat swscale swresample sdl2"
3319 ffplay_extralibs='$sdl2_extralibs'
3320 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3321 ffprobe_deps="avcodec avformat"
3322 ffserver_deps="avformat fork sarestart"
3323 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3324
3325 # documentation
3326 podpages_deps="perl"
3327 manpages_deps="perl pod2man"
3328 htmlpages_deps="perl"
3329 htmlpages_deps_any="makeinfo_html texi2html"
3330 txtpages_deps="perl makeinfo"
3331 doc_deps_any="manpages htmlpages podpages txtpages"
3332
3333 # default parameters
3334
3335 logfile="ffbuild/config.log"
3336
3337 # installation paths
3338 prefix_default="/usr/local"
3339 bindir_default='${prefix}/bin'
3340 datadir_default='${prefix}/share/ffmpeg'
3341 docdir_default='${prefix}/share/doc/ffmpeg'
3342 incdir_default='${prefix}/include'
3343 libdir_default='${prefix}/lib'
3344 mandir_default='${prefix}/share/man'
3345
3346 # toolchain
3347 ar_default="ar"
3348 cc_default="gcc"
3349 cxx_default="g++"
3350 host_cc_default="gcc"
3351 doxygen_default="doxygen"
3352 install="install"
3353 ln_s_default="ln -s -f"
3354 nm_default="nm -g"
3355 pkg_config_default=pkg-config
3356 ranlib_default="ranlib"
3357 strip_default="strip"
3358 version_script='--version-script'
3359 x86asmexe_default="nasm"
3360 windres_default="windres"
3361 nvcc_default="nvcc"
3362 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3363
3364 # OS
3365 target_os_default=$(tolower $(uname -s))
3366 host_os=$target_os_default
3367
3368 # machine
3369 if test "$target_os_default" = aix; then
3370     arch_default=$(uname -p)
3371     strip_default="strip -X32_64"
3372 else
3373     arch_default=$(uname -m)
3374 fi
3375 cpu="generic"
3376 intrinsics="none"
3377
3378 # configurable options
3379 enable $PROGRAM_LIST
3380 enable $DOCUMENT_LIST
3381 enable $EXAMPLE_LIST
3382 enable $(filter_out avresample $LIBRARY_LIST)
3383 enable stripping
3384
3385 enable asm
3386 enable debug
3387 enable doc
3388 enable faan faandct faanidct
3389 enable optimizations
3390 enable runtime_cpudetect
3391 enable safe_bitstream_reader
3392 enable static
3393 enable swscale_alpha
3394 enable valgrind_backtrace
3395
3396 sws_max_filter_size_default=256
3397 set_default sws_max_filter_size
3398
3399 # build settings
3400 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3401 LIBPREF="lib"
3402 LIBSUF=".a"
3403 FULLNAME='$(NAME)$(BUILDSUF)'
3404 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3405 SLIBPREF="lib"
3406 SLIBSUF=".so"
3407 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3408 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3409 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3410 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3411 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3412 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3413 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3414
3415 asflags_filter=echo
3416 cflags_filter=echo
3417 ldflags_filter=echo
3418
3419 AS_C='-c'
3420 AS_O='-o $@'
3421 CC_C='-c'
3422 CC_E='-E -o $@'
3423 CC_O='-o $@'
3424 CXX_C='-c'
3425 CXX_O='-o $@'
3426 OBJCC_C='-c'
3427 OBJCC_E='-E -o $@'
3428 OBJCC_O='-o $@'
3429 X86ASM_O='-o $@'
3430 LD_O='-o $@'
3431 LD_LIB='-l%'
3432 LD_PATH='-L'
3433 HOSTCC_C='-c'
3434 HOSTCC_E='-E -o $@'
3435 HOSTCC_O='-o $@'
3436 HOSTLD_O='-o $@'
3437 NVCC_C='-c'
3438 NVCC_O='-o $@'
3439
3440 host_extralibs='-lm'
3441 host_cflags_filter=echo
3442 host_ldflags_filter=echo
3443
3444 target_path='$(CURDIR)'
3445
3446 # since the object filename is not given with the -MM flag, the compiler
3447 # is only able to print the basename, and we must add the path ourselves
3448 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3449 DEPFLAGS='-MM'
3450
3451 mkdir -p ffbuild
3452
3453 # find source path
3454 if test -f configure; then
3455     source_path=.
3456 else
3457     source_path=$(cd $(dirname "$0"); pwd)
3458     case "$source_path" in
3459         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3460     esac
3461     test -e "$source_path/config.h" &&
3462         die "Out of tree builds are impossible with config.h in source dir."
3463 fi
3464
3465 for v in "$@"; do
3466     r=${v#*=}
3467     l=${v%"$r"}
3468     r=$(sh_quote "$r")
3469     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3470 done
3471
3472 find_things(){
3473     thing=$1
3474     pattern=$2
3475     file=$source_path/$3
3476     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3477 }
3478
3479 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3480 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3481 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3482 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3483 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3484 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3485 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3486 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3487 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3488
3489 find_things_extern(){
3490     thing=$1
3491     pattern=$2
3492     file=$source_path/$3
3493     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3494 }
3495
3496 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3497 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3498
3499 ALL_COMPONENTS="
3500     $BSF_LIST
3501     $DECODER_LIST
3502     $DEMUXER_LIST
3503     $ENCODER_LIST
3504     $FILTER_LIST
3505     $HWACCEL_LIST
3506     $INDEV_LIST
3507     $MUXER_LIST
3508     $OUTDEV_LIST
3509     $PARSER_LIST
3510     $PROTOCOL_LIST
3511 "
3512
3513 for n in $COMPONENT_LIST; do
3514     v=$(toupper ${n%s})_LIST
3515     eval enable \$$v
3516     eval ${n}_if_any="\$$v"
3517 done
3518
3519 enable $ARCH_EXT_LIST
3520
3521 die_unknown(){
3522     echo "Unknown option \"$1\"."
3523     echo "See $0 --help for available options."
3524     exit 1
3525 }
3526
3527 print_in_columns() {
3528     cols=$(expr $ncols / 24)
3529     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3530 }
3531
3532 show_list() {
3533     suffix=_$1
3534     shift
3535     echo $* | sed s/$suffix//g | print_in_columns
3536     exit 0
3537 }
3538
3539 rand_list(){
3540     IFS=', '
3541     set -- $*
3542     unset IFS
3543     for thing; do
3544         comp=${thing%:*}
3545         prob=${thing#$comp}
3546         prob=${prob#:}
3547         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3548         echo "prob ${prob:-0.5}"
3549         printf '%s\n' $comp
3550     done
3551 }
3552
3553 do_random(){
3554     action=$1
3555     shift
3556     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3557     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3558 }
3559
3560 for opt do
3561     optval="${opt#*=}"
3562     case "$opt" in
3563         --extra-ldflags=*)
3564             add_ldflags $optval
3565         ;;
3566         --extra-ldexeflags=*)
3567             add_ldexeflags $optval
3568         ;;
3569         --extra-ldlibflags=*)
3570             add_ldlibflags $optval
3571         ;;
3572         --extra-libs=*)
3573             add_extralibs $optval
3574         ;;
3575         --disable-devices)
3576             disable $INDEV_LIST $OUTDEV_LIST
3577         ;;
3578         --enable-debug=*)
3579             debuglevel="$optval"
3580         ;;
3581         --disable-programs)
3582             disable $PROGRAM_LIST
3583         ;;
3584         --disable-everything)
3585             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3586         ;;
3587         --disable-all)
3588             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3589             disable $LIBRARY_LIST $PROGRAM_LIST doc
3590             enable avutil
3591         ;;
3592         --enable-random|--disable-random)
3593             action=${opt%%-random}
3594             do_random ${action#--} $COMPONENT_LIST
3595         ;;
3596         --enable-random=*|--disable-random=*)
3597             action=${opt%%-random=*}
3598             do_random ${action#--} $optval
3599         ;;
3600         --enable-sdl)
3601             enable sdl2
3602         ;;
3603         --enable-*=*|--disable-*=*)
3604             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3605             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3606             eval list=\$$(toupper $thing)_LIST
3607             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3608             list=$(filter "$name" $list)
3609             [ "$list" = "" ] && warn "Option $opt did not match anything"
3610             $action $list
3611         ;;
3612         --enable-yasm|--disable-yasm)
3613             warn "The ${opt} option is only provided for compatibility and will be\n"\
3614                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3615             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3616         ;;
3617         --yasmexe=*)
3618             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3619                  "removed in the future. Use --x86asmexe instead."
3620             x86asmexe="$optval"
3621         ;;
3622         --enable-?*|--disable-?*)
3623             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3624             if is_in $option $COMPONENT_LIST; then
3625                 test $action = disable && action=unset
3626                 eval $action \$$(toupper ${option%s})_LIST
3627             elif is_in $option $CMDLINE_SELECT; then
3628                 $action $option
3629             else
3630                 die_unknown $opt
3631             fi
3632         ;;
3633         --list-*)
3634             NAME="${opt#--list-}"
3635             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3636             NAME=${NAME%s}
3637             eval show_list $NAME \$$(toupper $NAME)_LIST
3638         ;;
3639         --help|-h) show_help
3640         ;;
3641         --quiet|-q) quiet=yes
3642         ;;
3643         --fatal-warnings) enable fatal_warnings
3644         ;;
3645         --libfuzzer=*)
3646             libfuzzer_path="$optval"
3647         ;;
3648         *)
3649             optname="${opt%%=*}"
3650             optname="${optname#--}"
3651             optname=$(echo "$optname" | sed 's/-/_/g')
3652             if is_in $optname $CMDLINE_SET; then
3653                 eval $optname='$optval'
3654             elif is_in $optname $CMDLINE_APPEND; then
3655                 append $optname "$optval"
3656             else
3657                 die_unknown $opt
3658             fi
3659         ;;
3660     esac
3661 done
3662
3663 for e in $env; do
3664     eval "export $e"
3665 done
3666
3667 if disabled autodetect; then
3668
3669     # Unless iconv is explicitely disabled by the user, we still want to probe
3670     # for the iconv from the libc.
3671     disabled iconv || enable libc_iconv
3672
3673     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3674     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3675 fi
3676 # Mark specifically enabled, but normally autodetected libraries as requested.
3677 for lib in $AUTODETECT_LIBS; do
3678     enabled $lib && request $lib
3679 done
3680 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3681 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3682 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3683
3684 disabled logging && logfile=/dev/null
3685
3686 die_license_disabled() {
3687     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3688 }
3689
3690 die_license_disabled_gpl() {
3691     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3692 }
3693
3694 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3695 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3696
3697 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3698 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3699
3700 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3701
3702 # Disable all the library-specific components if the library itself
3703 # is disabled, see AVCODEC_LIST and following _LIST variables.
3704
3705 disable_components(){
3706     disabled ${1} && disable $(
3707         eval components="\$$(toupper ${1})_COMPONENTS"
3708         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3709     )
3710 }
3711
3712 map 'disable_components $v' $LIBRARY_LIST
3713
3714 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3715 set >> $logfile
3716
3717 test -n "$valgrind" && toolchain="valgrind-memcheck"
3718
3719 enabled ossfuzz && {
3720     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3721     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3722 }
3723
3724 case "$toolchain" in
3725     *-asan)
3726         cc_default="${toolchain%-asan}"
3727         add_cflags  -fsanitize=address
3728         add_ldflags -fsanitize=address
3729     ;;
3730     *-msan)
3731         cc_default="${toolchain%-msan}"
3732         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3733         add_ldflags -fsanitize=memory
3734     ;;
3735     *-tsan)
3736         cc_default="${toolchain%-tsan}"
3737         add_cflags  -fsanitize=thread -fPIE
3738         add_ldflags -fsanitize=thread -pie
3739         case "$toolchain" in
3740             gcc-tsan)
3741                 add_cflags  -fPIC
3742                 add_ldflags -fPIC
3743                 ;;
3744         esac
3745     ;;
3746     *-usan)
3747         cc_default="${toolchain%-usan}"
3748         add_cflags  -fsanitize=undefined
3749         add_ldflags -fsanitize=undefined
3750     ;;
3751     valgrind-*)
3752         target_exec_default="valgrind"
3753         case "$toolchain" in
3754             valgrind-massif)
3755                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3756                 ;;
3757             valgrind-memcheck)
3758                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3759                 ;;
3760         esac
3761     ;;
3762     msvc)
3763         # Check whether the current MSVC version needs the C99 converter.
3764         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3765         # support enough of C99 to build ffmpeg. Default to the new
3766         # behaviour if the regexp was unable to match anything, since this
3767         # successfully parses the version number of existing supported
3768         # versions that require the converter (MSVC 2010 and 2012).
3769         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3770         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3771             cc_default="cl"
3772             cxx_default="cl"
3773         else
3774             cc_default="c99wrap cl"
3775             cxx_default="c99wrap cl"
3776         fi
3777         ld_default="$source_path/compat/windows/mslink"
3778         nm_default="dumpbin -symbols"
3779         ar_default="lib"
3780         case "$arch" in
3781         arm*)
3782             as_default="armasm"
3783             ;;
3784         esac
3785         target_os_default="win32"
3786         # Use a relative path for TMPDIR. This makes sure all the
3787         # ffconf temp files are written with a relative path, avoiding
3788         # issues with msys/win32 path conversion for MSVC parameters
3789         # such as -Fo<file> or -out:<file>.
3790         TMPDIR=.
3791     ;;
3792     icl)
3793         cc_default="icl"
3794         ld_default="xilink"
3795         nm_default="dumpbin -symbols"
3796         ar_default="xilib"
3797         target_os_default="win32"
3798         TMPDIR=.
3799     ;;
3800     gcov)
3801         add_cflags  -fprofile-arcs -ftest-coverage
3802         add_ldflags -fprofile-arcs -ftest-coverage
3803     ;;
3804     llvm-cov)
3805         add_cflags -fprofile-arcs -ftest-coverage
3806         add_ldflags --coverage
3807     ;;
3808     hardened)
3809         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3810         add_cflags   -fno-strict-overflow -fstack-protector-all
3811         add_ldflags  -Wl,-z,relro -Wl,-z,now
3812         add_cflags   -fPIE
3813         add_ldexeflags -fPIE -pie
3814     ;;
3815     ?*)
3816         die "Unknown toolchain $toolchain"
3817     ;;
3818 esac
3819
3820 test -n "$cross_prefix" && enable cross_compile
3821
3822 if enabled cross_compile; then
3823     test -n "$arch" && test -n "$target_os" ||
3824         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3825 fi
3826
3827 ar_default="${cross_prefix}${ar_default}"
3828 cc_default="${cross_prefix}${cc_default}"
3829 cxx_default="${cross_prefix}${cxx_default}"
3830 nm_default="${cross_prefix}${nm_default}"
3831 pkg_config_default="${cross_prefix}${pkg_config_default}"
3832 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3833     ranlib_default="${cross_prefix}${ranlib_default} -D"
3834 else
3835     ranlib_default="${cross_prefix}${ranlib_default}"
3836 fi
3837 strip_default="${cross_prefix}${strip_default}"
3838 windres_default="${cross_prefix}${windres_default}"
3839
3840 sysinclude_default="${sysroot}/usr/include"
3841
3842 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3843     target_exec target_os x86asmexe nvcc
3844 enabled cross_compile || host_cc_default=$cc
3845 set_default host_cc
3846
3847 pkg_config_fail_message=""
3848 if ! $pkg_config --version >/dev/null 2>&1; then
3849     warn "$pkg_config not found, library detection may fail."
3850     pkg_config=false
3851 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3852     pkg_config_fail_message="
3853 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3854 fi
3855
3856 if test $doxygen != $doxygen_default && \
3857   ! $doxygen --version >/dev/null 2>&1; then
3858     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3859 fi
3860
3861 exesuf() {
3862     case $1 in
3863         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3864     esac
3865 }
3866
3867 EXESUF=$(exesuf $target_os)
3868 HOSTEXESUF=$(exesuf $host_os)
3869
3870 # set temporary file name
3871 : ${TMPDIR:=$TEMPDIR}
3872 : ${TMPDIR:=$TMP}
3873 : ${TMPDIR:=/tmp}
3874
3875 if [ -n "$tempprefix" ] ; then
3876     mktemp(){
3877         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3878         echo "$tmpname"
3879         mkdir "$tmpname"
3880     }
3881 elif ! check_cmd mktemp -u XXXXXX; then
3882     # simple replacement for missing mktemp
3883     # NOT SAFE FOR GENERAL USE
3884     mktemp(){
3885         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3886         echo "$tmpname"
3887         mkdir "$tmpname"
3888     }
3889 fi
3890
3891 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3892     die "Unable to create temporary directory in $TMPDIR."
3893
3894 tmpfile(){
3895     tmp="${FFTMPDIR}/test"$2
3896     (set -C; exec > $tmp) 2> /dev/null ||
3897         die "Unable to create temporary file in $FFTMPDIR."
3898     eval $1=$tmp
3899 }
3900
3901 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3902 trap 'exit 2' INT
3903
3904 tmpfile TMPASM .asm
3905 tmpfile TMPC   .c
3906 tmpfile TMPCPP .cpp
3907 tmpfile TMPE   $EXESUF
3908 tmpfile TMPH   .h
3909 tmpfile TMPM   .m
3910 tmpfile TMPO   .o
3911 tmpfile TMPS   .S
3912 tmpfile TMPSH  .sh
3913 tmpfile TMPV   .ver
3914
3915 unset -f mktemp
3916
3917 chmod +x $TMPE
3918
3919 # make sure we can execute files in $TMPDIR
3920 cat > $TMPSH 2>> $logfile <<EOF
3921 #! /bin/sh
3922 EOF
3923 chmod +x $TMPSH >> $logfile 2>&1
3924 if ! $TMPSH >> $logfile 2>&1; then
3925     cat <<EOF
3926 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3927 variable to another directory and make sure that it is not mounted noexec.
3928 EOF
3929     die "Sanity test failed."
3930 fi
3931
3932 armasm_flags(){
3933     for flag; do
3934         case $flag in
3935             # Filter out MSVC cl.exe options from cflags that shouldn't
3936             # be passed to gas-preprocessor
3937             -M[TD]*)                                            ;;
3938             *)                  echo $flag                      ;;
3939         esac
3940    done
3941 }
3942
3943 ccc_flags(){
3944     for flag; do
3945         case $flag in
3946             -std=c99)           echo -c99                       ;;
3947             -mcpu=*)            echo -arch ${flag#*=}           ;;
3948             -mieee)             echo -ieee                      ;;
3949             -O*|-fast)          echo $flag                      ;;
3950             -fno-math-errno)    echo -assume nomath_errno       ;;
3951             -g)                 echo -g3                        ;;
3952             -Wall)              echo -msg_enable level2         ;;
3953             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3954             -Wl,*)              echo $flag                      ;;
3955             -f*|-W*)                                            ;;
3956             *)                  echo $flag                      ;;
3957         esac
3958    done
3959 }
3960
3961 cparser_flags(){
3962     for flag; do
3963         case $flag in
3964             -Wno-switch)             echo -Wno-switch-enum ;;
3965             -Wno-format-zero-length) ;;
3966             -Wdisabled-optimization) ;;
3967             -Wno-pointer-sign)       echo -Wno-other ;;
3968             *)                       echo $flag ;;
3969         esac
3970     done
3971 }
3972
3973 msvc_common_flags(){
3974     for flag; do
3975         case $flag in
3976             # In addition to specifying certain flags under the compiler
3977             # specific filters, they must be specified here as well or else the
3978             # generic catch all at the bottom will print the original flag.
3979             -Wall)                ;;
3980             -Wextra)              ;;
3981             -std=c99)             ;;
3982             # Common flags
3983             -fomit-frame-pointer) ;;
3984             -g)                   echo -Z7 ;;
3985             -fno-math-errno)      ;;
3986             -fno-common)          ;;
3987             -fno-signed-zeros)    ;;
3988             -fPIC)                ;;
3989             -mthumb)              ;;
3990             -march=*)             ;;
3991             -lz)                  echo zlib.lib ;;
3992             -lx264)               echo libx264.lib ;;
3993             -lstdc++)             ;;
3994             -l*)                  echo ${flag#-l}.lib ;;
3995             -LARGEADDRESSAWARE)   echo $flag ;;
3996             -L*)                  echo -libpath:${flag#-L} ;;
3997             *)                    echo $flag ;;
3998         esac
3999     done
4000 }
4001
4002 msvc_flags(){
4003     msvc_common_flags "$@"
4004     for flag; do
4005         case $flag in
4006             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4007                                        -wd4554 ;;
4008             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4009                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4010                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4011                                        -wd4307 \
4012                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4013         esac
4014     done
4015 }
4016
4017 icl_flags(){
4018     msvc_common_flags "$@"
4019     for flag; do
4020         case $flag in
4021             # Despite what Intel's documentation says -Wall, which is supported
4022             # on Windows, does enable remarks so disable them here.
4023             -Wall)                echo $flag -Qdiag-disable:remark ;;
4024             -std=c99)             echo -Qstd=c99 ;;
4025             -flto)                echo -ipo ;;
4026         esac
4027     done
4028 }
4029
4030 icc_flags(){
4031     for flag; do
4032         case $flag in
4033             -flto)                echo -ipo ;;
4034             *)                    echo $flag ;;
4035         esac
4036     done
4037 }
4038
4039 pgi_flags(){
4040     for flag; do
4041         case $flag in
4042             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4043             -fomit-frame-pointer) echo -Mnoframe ;;
4044             -g)                   echo -gopt ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 suncc_flags(){
4051     for flag; do
4052         case $flag in
4053             -march=*|-mcpu=*)
4054                 case "${flag#*=}" in
4055                     native)                   echo -xtarget=native       ;;
4056                     v9|niagara)               echo -xarch=sparc          ;;
4057                     ultrasparc)               echo -xarch=sparcvis       ;;
4058                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4059                     i586|pentium)             echo -xchip=pentium        ;;
4060                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4061                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4062                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4063                     pentium4*)          echo -xtarget=pentium4           ;;
4064                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4065                     *-sse3)             echo -xarch=sse3                 ;;
4066                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4067                     bonnell)                   echo -xarch=ssse3         ;;
4068                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4069                     westmere)                  echo -xtarget=westmere    ;;
4070                     silvermont)                echo -xarch=sse4_2        ;;
4071                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4072                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4073                                                echo -xarch=avx           ;;
4074                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4075                     btver1)                    echo -xarch=amdsse4a      ;;
4076                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4077                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4078                     k8|opteron|athlon64|athlon-fx)
4079                                                echo -xarch=sse2a         ;;
4080                     athlon*)                   echo -xarch=pentium_proa  ;;
4081                 esac
4082                 ;;
4083             -std=c99)             echo -xc99              ;;
4084             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4085             -fPIC)                echo -KPIC -xcode=pic32 ;;
4086             -W*,*)                echo $flag              ;;
4087             -f*-*|-W*|-mimpure-text)                      ;;
4088             -shared)              echo -G                 ;;
4089             *)                    echo $flag              ;;
4090         esac
4091     done
4092 }
4093
4094 tms470_flags(){
4095     for flag; do
4096         case $flag in
4097             -march=*|-mcpu=*)
4098                 case "${flag#*=}" in
4099                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4100                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4101                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4102                     armv6*|arm11*)          echo -mv=6   ;;
4103                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4104                                             echo -mv=5e  ;;
4105                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4106                 esac
4107                 ;;
4108             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4109             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4110             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4111             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4112             -msoft-float)   echo --float_support=vfplib       ;;
4113             -O[0-3]|-mf=*)  echo $flag                        ;;
4114             -g)             echo -g -mn                       ;;
4115             -pds=*)         echo $flag                        ;;
4116             -D*|-I*)        echo $flag                        ;;
4117             --gcc|--abi=*)  echo $flag                        ;;
4118             -me)            echo $flag                        ;;
4119         esac
4120     done
4121 }
4122
4123 probe_cc(){
4124     pfx=$1
4125     _cc=$2
4126     first=$3
4127
4128     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4129     unset _ld_o _ldflags _ld_lib _ld_path
4130     unset _depflags _DEPCMD _DEPFLAGS
4131     _flags_filter=echo
4132
4133     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4134         true # no-op to avoid reading stdin in following checks
4135     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4136         _type=llvm_gcc
4137         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4138         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4139         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4140         _cflags_speed='-O3'
4141         _cflags_size='-Os'
4142     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4143         _type=gcc
4144         gcc_version=$($_cc --version | head -n1)
4145         gcc_basever=$($_cc -dumpversion)
4146         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4147         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4148         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4149         case $gcc_basever in
4150             2) ;;
4151             2.*) ;;
4152             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4153         esac
4154         if [ "$first" = true ]; then
4155             case $gcc_basever in
4156                 4.2*)
4157                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4158             esac
4159         fi
4160         _cflags_speed='-O3'
4161         _cflags_size='-Os'
4162     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4163         _type=icc
4164         _ident=$($_cc --version | head -n1)
4165         _depflags='-MMD'
4166         _cflags_speed='-O3'
4167         _cflags_size='-Os'
4168         _cflags_noopt='-O1'
4169         _flags_filter=icc_flags
4170     elif $_cc -v 2>&1 | grep -q xlc; then
4171         _type=xlc
4172         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4173         _cflags_speed='-O5'
4174         _cflags_size='-O5 -qcompact'
4175     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4176         _type=ccc
4177         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4178         _DEPFLAGS='-M'
4179         _cflags_speed='-fast'
4180         _cflags_size='-O1'
4181         _flags_filter=ccc_flags
4182     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4183         test -d "$sysroot" || die "No valid sysroot specified."
4184         _type=armcc
4185         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4186         armcc_conf="$PWD/armcc.conf"
4187         $_cc --arm_linux_configure                 \
4188              --arm_linux_config_file="$armcc_conf" \
4189              --configure_sysroot="$sysroot"        \
4190              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4191              die "Error creating armcc configuration file."
4192         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4193         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4194         as_default="${cross_prefix}gcc"
4195         _depflags='-MMD'
4196         _cflags_speed='-O3'
4197         _cflags_size='-Os'
4198     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4199         _type=tms470
4200         _ident=$($_cc -version | head -n1 | tr -s ' ')
4201         _flags='--gcc --abi=eabi -me'
4202         _cc_e='-ppl -fe=$@'
4203         _cc_o='-fe=$@'
4204         _depflags='-ppa -ppd=$(@:.o=.d)'
4205         _cflags_speed='-O3 -mf=5'
4206         _cflags_size='-O3 -mf=2'
4207         _flags_filter=tms470_flags
4208     elif $_cc -v 2>&1 | grep -q clang; then
4209         _type=clang
4210         _ident=$($_cc --version 2>/dev/null | head -n1)
4211         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4212         _cflags_speed='-O3'
4213         _cflags_size='-Oz'
4214     elif $_cc -V 2>&1 | grep -q Sun; then
4215         _type=suncc
4216         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4217         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4218         _DEPFLAGS='-xM1 -xc99'
4219         _ldflags='-std=c99'
4220         _cflags_speed='-O5'
4221         _cflags_size='-O5 -xspace'
4222         _flags_filter=suncc_flags
4223     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4224         _type=pathscale
4225         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4227         _cflags_speed='-O2'
4228         _cflags_size='-Os'
4229         _flags_filter='filter_out -Wdisabled-optimization'
4230     elif $_cc -v 2>&1 | grep -q Open64; then
4231         _type=open64
4232         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4234         _cflags_speed='-O2'
4235         _cflags_size='-Os'
4236         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4237     elif $_cc -V 2>&1 | grep -q Portland; then
4238         _type=pgi
4239         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4240         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4241         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4242         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4243         _cflags_noopt="-O"
4244         _flags_filter=pgi_flags
4245     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4246         _type=armasm
4247         _ident=$($_cc | head -n1)
4248         # 4509: "This form of conditional instruction is deprecated"
4249         _flags="-nologo -ignore 4509"
4250         _flags_filter=armasm_flags
4251     elif $_cc 2>&1 | grep -q Intel; then
4252         _type=icl
4253         _ident=$($_cc 2>&1 | head -n1)
4254         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4255         # Not only is O3 broken on 13.x+ but it is slower on all previous
4256         # versions (tested) as well.
4257         _cflags_speed="-O2"
4258         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4259         if $_cc 2>&1 | grep -q Linker; then
4260             _ld_o='-out:$@'
4261         else
4262             _ld_o='-Fe$@'
4263         fi
4264         _cc_o='-Fo$@'
4265         _cc_e='-P'
4266         _flags_filter=icl_flags
4267         _ld_lib='lib%.a'
4268         _ld_path='-libpath:'
4269         # -Qdiag-error to make icl error when seeing certain unknown arguments
4270         _flags='-nologo -Qdiag-error:4044,10157'
4271         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4272         # with MSVC which enables it by default.
4273         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4274         disable stripping
4275     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4276         # lld can emulate multiple different linkers; in ms link.exe mode,
4277         # the -? parameter gives the help output which contains an identifyable
4278         # string, while it gives an error in other modes.
4279         _type=lld-link
4280         # The link.exe mode doesn't have a switch for getting the version,
4281         # but we can force it back to gnu mode and get the version from there.
4282         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4283         _ld_o='-out:$@'
4284         _flags_filter=msvc_flags
4285         _ld_lib='lib%.a'
4286         _ld_path='-libpath:'
4287     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4288         _type=msvc
4289         _ident=$($_cc 2>&1 | head -n1)
4290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4291         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4292         _cflags_speed="-O2"
4293         _cflags_size="-O1"
4294         _cflags_noopt="-O1"
4295         if $_cc -nologo- 2>&1 | grep -q Linker; then
4296             _ld_o='-out:$@'
4297         else
4298             _ld_o='-Fe$@'
4299         fi
4300         _cc_o='-Fo$@'
4301         _cc_e='-P -Fi$@'
4302         _flags_filter=msvc_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305         _flags='-nologo'
4306         disable stripping
4307     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4308         _type=cparser
4309         _ident=$($_cc --version | head -n1)
4310         _depflags='-MMD'
4311         _cflags_speed='-O4'
4312         _cflags_size='-O2'
4313         _flags_filter=cparser_flags
4314     fi
4315
4316     eval ${pfx}_type=\$_type
4317     eval ${pfx}_ident=\$_ident
4318 }
4319
4320 set_ccvars(){
4321     eval ${1}_C=\${_cc_c-\${${1}_C}}
4322     eval ${1}_E=\${_cc_e-\${${1}_E}}
4323     eval ${1}_O=\${_cc_o-\${${1}_O}}
4324
4325     if [ -n "$_depflags" ]; then
4326         eval ${1}_DEPFLAGS=\$_depflags
4327     else
4328         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4329         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4330         eval DEP${1}FLAGS=\$_flags
4331     fi
4332 }
4333
4334 probe_cc cc "$cc" "true"
4335 cflags_filter=$_flags_filter
4336 cflags_speed=$_cflags_speed
4337 cflags_size=$_cflags_size
4338 cflags_noopt=$_cflags_noopt
4339 add_cflags $_flags $_cflags
4340 cc_ldflags=$_ldflags
4341 set_ccvars CC
4342 set_ccvars CXX
4343
4344 probe_cc hostcc "$host_cc"
4345 host_cflags_filter=$_flags_filter
4346 host_cflags_speed=$_cflags_speed
4347 add_host_cflags  $_flags $_cflags
4348 set_ccvars HOSTCC
4349
4350 test -n "$cc_type" && enable $cc_type ||
4351     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4352
4353 : ${as_default:=$cc}
4354 : ${objcc_default:=$cc}
4355 : ${dep_cc_default:=$cc}
4356 : ${ld_default:=$cc}
4357 : ${host_ld_default:=$host_cc}
4358 set_default ar as objcc dep_cc ld ln_s host_ld windres
4359
4360 probe_cc as "$as"
4361 asflags_filter=$_flags_filter
4362 add_asflags $_flags $_cflags
4363 set_ccvars AS
4364
4365 probe_cc objcc "$objcc"
4366 objcflags_filter=$_flags_filter
4367 add_objcflags $_flags $_cflags
4368 set_ccvars OBJC
4369
4370 probe_cc ld "$ld"
4371 ldflags_filter=$_flags_filter
4372 add_ldflags $_flags $_ldflags
4373 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4374 LD_O=${_ld_o-$LD_O}
4375 LD_LIB=${_ld_lib-$LD_LIB}
4376 LD_PATH=${_ld_path-$LD_PATH}
4377
4378 probe_cc hostld "$host_ld"
4379 host_ldflags_filter=$_flags_filter
4380 add_host_ldflags $_flags $_ldflags
4381 HOSTLD_O=${_ld_o-$HOSTLD_O}
4382
4383 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4384     probe_cc depcc "$dep_cc"
4385     CCDEP=${_DEPCMD:-$DEPCMD}
4386     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4387     DEPCCFLAGS=$_flags
4388 fi
4389
4390 if $ar 2>&1 | grep -q Microsoft; then
4391     arflags="-nologo"
4392     ar_o='-out:$@'
4393 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4394     arflags="rq"
4395     ar_o='$@'
4396 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4397     arflags='-Xany -r -c'
4398     ar_o='$@'
4399 elif $ar 2>&1 | grep -q "\[D\] "; then
4400     arflags="rcD"
4401     ar_o='$@'
4402 else
4403     arflags="rc"
4404     ar_o='$@'
4405 fi
4406
4407 add_cflags $extra_cflags
4408 add_cxxflags $extra_cxxflags
4409 add_objcflags $extra_objcflags
4410 add_asflags $extra_cflags
4411
4412 if test -n "$sysroot"; then
4413     case "$cc_type" in
4414         gcc|llvm_gcc|clang)
4415             add_cppflags --sysroot="$sysroot"
4416             add_ldflags --sysroot="$sysroot"
4417 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4418             add_cppflags -isysroot "$sysroot"
4419             add_ldflags -isysroot "$sysroot"
4420         ;;
4421         tms470)
4422             add_cppflags -I"$sysinclude"
4423             add_ldflags  --sysroot="$sysroot"
4424         ;;
4425     esac
4426 fi
4427
4428 if test "$cpu" = host; then
4429     enabled cross_compile &&
4430         die "--cpu=host makes no sense when cross-compiling."
4431
4432     case "$cc_type" in
4433         gcc|llvm_gcc)
4434             check_native(){
4435                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4436                 sed -n "/cc1.*$1=/{
4437                             s/.*$1=\\([^ ]*\\).*/\\1/
4438                             p
4439                             q
4440                         }" $TMPE
4441             }
4442             cpu=$(check_native -march || check_native -mcpu)
4443         ;;
4444         clang)
4445             check_native(){
4446                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4447                 sed -n "/cc1.*-target-cpu /{
4448                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4449                             p
4450                             q
4451                         }" $TMPE
4452             }
4453             cpu=$(check_native -march)
4454         ;;
4455     esac
4456
4457     test "${cpu:-host}" = host &&
4458         die "--cpu=host not supported with compiler $cc"
4459 fi
4460
4461 # Deal with common $arch aliases
4462 case "$arch" in
4463     aarch64|arm64)
4464         arch="aarch64"
4465     ;;
4466     arm*|iPad*|iPhone*)
4467         arch="arm"
4468     ;;
4469     mips*|IP*)
4470         case "$arch" in
4471         *el)
4472             add_cppflags -EL
4473             add_ldflags -EL
4474         ;;
4475         *eb)
4476             add_cppflags -EB
4477             add_ldflags -EB
4478         ;;
4479         esac
4480         arch="mips"
4481     ;;
4482     parisc*|hppa*)
4483         arch="parisc"
4484     ;;
4485     "Power Macintosh"|ppc*|powerpc*)
4486         arch="ppc"
4487     ;;
4488     s390|s390x)
4489         arch="s390"
4490     ;;
4491     sh4|sh)
4492         arch="sh4"
4493     ;;
4494     sun4*|sparc*)
4495         arch="sparc"
4496     ;;
4497     tilegx|tile-gx)
4498         arch="tilegx"
4499     ;;
4500     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4501         arch="x86"
4502     ;;
4503 esac
4504
4505 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4506 enable $arch
4507
4508 # Add processor-specific flags
4509 if enabled aarch64; then
4510
4511     case $cpu in
4512         armv*)
4513             cpuflags="-march=$cpu"
4514         ;;
4515         *)
4516             cpuflags="-mcpu=$cpu"
4517         ;;
4518     esac
4519
4520 elif enabled alpha; then
4521
4522     cpuflags="-mcpu=$cpu"
4523
4524 elif enabled arm; then
4525
4526     check_arm_arch() {
4527         check_cpp_condition stddef.h \
4528             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4529             $cpuflags
4530     }
4531
4532     probe_arm_arch() {
4533         if   check_arm_arch 4;        then echo armv4
4534         elif check_arm_arch 4T;       then echo armv4t
4535         elif check_arm_arch 5;        then echo armv5
4536         elif check_arm_arch 5E;       then echo armv5e
4537         elif check_arm_arch 5T;       then echo armv5t
4538         elif check_arm_arch 5TE;      then echo armv5te
4539         elif check_arm_arch 5TEJ;     then echo armv5te
4540         elif check_arm_arch 6;        then echo armv6
4541         elif check_arm_arch 6J;       then echo armv6j
4542         elif check_arm_arch 6K;       then echo armv6k
4543         elif check_arm_arch 6Z;       then echo armv6z
4544         elif check_arm_arch 6ZK;      then echo armv6zk
4545         elif check_arm_arch 6T2;      then echo armv6t2
4546         elif check_arm_arch 7;        then echo armv7
4547         elif check_arm_arch 7A  7_A;  then echo armv7-a
4548         elif check_arm_arch 7S;       then echo armv7-a
4549         elif check_arm_arch 7R  7_R;  then echo armv7-r
4550         elif check_arm_arch 7M  7_M;  then echo armv7-m
4551         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4552         elif check_arm_arch 8A  8_A;  then echo armv8-a
4553         fi
4554     }
4555
4556     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4557
4558     case $cpu in
4559         armv*)
4560             cpuflags="-march=$cpu"
4561             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4562         ;;
4563         *)
4564             cpuflags="-mcpu=$cpu"
4565             case $cpu in
4566                 cortex-a*)                               subarch=armv7a  ;;
4567                 cortex-r*)                               subarch=armv7r  ;;
4568                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4569                 arm11*)                                  subarch=armv6   ;;
4570                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4571                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4572                 *)                             subarch=$(probe_arm_arch) ;;
4573             esac
4574         ;;
4575     esac
4576
4577     case "$subarch" in
4578         armv5t*)    enable fast_clz                ;;
4579         armv[6-8]*)
4580             enable fast_clz
4581             disabled fast_unaligned || enable fast_unaligned
4582             ;;
4583     esac
4584
4585 elif enabled avr32; then
4586
4587     case $cpu in
4588         ap7[02]0[0-2])
4589             subarch="avr32_ap"
4590             cpuflags="-mpart=$cpu"
4591         ;;
4592         ap)
4593             subarch="avr32_ap"
4594             cpuflags="-march=$cpu"
4595         ;;
4596         uc3[ab]*)
4597             subarch="avr32_uc"
4598             cpuflags="-mcpu=$cpu"
4599         ;;
4600         uc)
4601             subarch="avr32_uc"
4602             cpuflags="-march=$cpu"
4603         ;;
4604     esac
4605
4606 elif enabled bfin; then
4607
4608     cpuflags="-mcpu=$cpu"
4609
4610 elif enabled mips; then
4611
4612     cpuflags="-march=$cpu"
4613
4614     if [ "$cpu" != "generic" ]; then
4615         disable mips32r2
4616         disable mips32r5
4617         disable mips64r2
4618         disable mips32r6
4619         disable mips64r6
4620         disable loongson2
4621         disable loongson3
4622
4623         case $cpu in
4624             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4625                 enable mips32r2
4626                 disable msa
4627             ;;
4628             p5600|i6400|p6600)
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631             ;;
4632             loongson*)
4633                 enable loongson2
4634                 enable loongson3
4635                 enable local_aligned_8 local_aligned_16 local_aligned_32
4636                 enable simd_align_16
4637                 enable fast_64bit
4638                 enable fast_clz
4639                 enable fast_cmov
4640                 enable fast_unaligned
4641                 disable aligned_stack
4642                 disable mipsfpu
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645                 case $cpu in
4646                     loongson3*)
4647                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4648                     ;;
4649                     loongson2e)
4650                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4651                     ;;
4652                     loongson2f)
4653                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4654                     ;;
4655                 esac
4656             ;;
4657             *)
4658                 # Unknown CPU. Disable everything.
4659                 warn "unknown CPU. Disabling all MIPS optimizations."
4660                 disable mipsfpu
4661                 disable mipsdsp
4662                 disable mipsdspr2
4663                 disable msa
4664                 disable mmi
4665             ;;
4666         esac
4667
4668         case $cpu in
4669             24kc)
4670                 disable mipsfpu
4671                 disable mipsdsp
4672                 disable mipsdspr2
4673             ;;
4674             24kf*)
4675                 disable mipsdsp
4676                 disable mipsdspr2
4677             ;;
4678             24kec|34kc|1004kc)
4679                 disable mipsfpu
4680                 disable mipsdspr2
4681             ;;
4682             24kef*|34kf*|1004kf*)
4683                 disable mipsdspr2
4684             ;;
4685             74kc)
4686                 disable mipsfpu
4687             ;;
4688             p5600)
4689                 enable mips32r5
4690                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4691             ;;
4692             i6400)
4693                 enable mips64r6
4694                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4695             ;;
4696             p6600)
4697                 enable mips64r6
4698                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4699             ;;
4700         esac
4701     else
4702         # We do not disable anything. Is up to the user to disable the unwanted features.
4703         warn 'generic cpu selected'
4704     fi
4705
4706 elif enabled ppc; then
4707
4708     disable ldbrx
4709
4710     case $(tolower $cpu) in
4711         601|ppc601|powerpc601)
4712             cpuflags="-mcpu=601"
4713             disable altivec
4714         ;;
4715         603*|ppc603*|powerpc603*)
4716             cpuflags="-mcpu=603"
4717             disable altivec
4718         ;;
4719         604*|ppc604*|powerpc604*)
4720             cpuflags="-mcpu=604"
4721             disable altivec
4722         ;;
4723         g3|75*|ppc75*|powerpc75*)
4724             cpuflags="-mcpu=750"
4725             disable altivec
4726         ;;
4727         g4|745*|ppc745*|powerpc745*)
4728             cpuflags="-mcpu=7450"
4729             disable vsx
4730         ;;
4731         74*|ppc74*|powerpc74*)
4732             cpuflags="-mcpu=7400"
4733             disable vsx
4734         ;;
4735         g5|970|ppc970|powerpc970)
4736             cpuflags="-mcpu=970"
4737             disable vsx
4738         ;;
4739         power[3-6]*)
4740             cpuflags="-mcpu=$cpu"
4741             disable vsx
4742         ;;
4743         power[7-8]*)
4744             cpuflags="-mcpu=$cpu"
4745         ;;
4746         cell)
4747             cpuflags="-mcpu=cell"
4748             enable ldbrx
4749             disable vsx
4750         ;;
4751         e500mc)
4752             cpuflags="-mcpu=e500mc"
4753             disable altivec
4754         ;;
4755         e500v2)
4756             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4757             disable altivec
4758             disable dcbzl
4759         ;;
4760         e500)
4761             cpuflags="-mcpu=8540 -mhard-float"
4762             disable altivec
4763             disable dcbzl
4764         ;;
4765     esac
4766
4767 elif enabled sparc; then
4768
4769     case $cpu in
4770         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4771             cpuflags="-mcpu=$cpu"
4772         ;;
4773         ultrasparc*|niagara[234])
4774             cpuflags="-mcpu=$cpu"
4775         ;;
4776     esac
4777
4778 elif enabled x86; then
4779
4780     case $cpu in
4781         i[345]86|pentium)
4782             cpuflags="-march=$cpu"
4783             disable i686
4784             disable mmx
4785         ;;
4786         # targets that do NOT support nopl and conditional mov (cmov)
4787         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4788             cpuflags="-march=$cpu"
4789             disable i686
4790         ;;
4791         # targets that do support nopl and conditional mov (cmov)
4792         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4793         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4794         |amdfam10|barcelona|b[dt]ver*|znver*)
4795             cpuflags="-march=$cpu"
4796             enable i686
4797             enable fast_cmov
4798         ;;
4799         # targets that do support conditional mov but on which it's slow
4800         pentium4|pentium4m|prescott|nocona)
4801             cpuflags="-march=$cpu"
4802             enable i686
4803             disable fast_cmov
4804         ;;
4805     esac
4806
4807 fi
4808
4809 if [ "$cpu" != generic ]; then
4810     add_cflags  $cpuflags
4811     add_asflags $cpuflags
4812     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4813 fi
4814
4815 # compiler sanity check
4816 check_exec <<EOF
4817 int main(void){ return 0; }
4818 EOF
4819 if test "$?" != 0; then
4820     echo "$cc is unable to create an executable file."
4821     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4822         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4823         echo "Only do this if you know what cross compiling means."
4824     fi
4825     die "C compiler test failed."
4826 fi
4827
4828 add_cppflags -D_ISOC99_SOURCE
4829 add_cxxflags -D__STDC_CONSTANT_MACROS
4830 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4831
4832 # some compilers silently accept -std=c11, so we also need to check that the
4833 # version macro is defined properly
4834 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4835     add_cflags -std=c11 ||
4836     check_cflags -std=c99
4837
4838 check_cppflags -D_FILE_OFFSET_BITS=64
4839 check_cppflags -D_LARGEFILE_SOURCE
4840
4841 add_host_cppflags -D_ISOC99_SOURCE
4842 check_host_cflags -std=c99
4843 check_host_cflags -Wall
4844 check_host_cflags $host_cflags_speed
4845
4846 check_64bit(){
4847     arch32=$1
4848     arch64=$2
4849     expr=$3
4850     check_code cc "" "int test[2*($expr) - 1]" &&
4851         subarch=$arch64 || subarch=$arch32
4852 }
4853
4854 case "$arch" in
4855     aarch64|alpha|ia64)
4856         spic=$shared
4857     ;;
4858     mips)
4859         check_64bit mips mips64 '_MIPS_SIM > 1'
4860         spic=$shared
4861     ;;
4862     parisc)
4863         check_64bit parisc parisc64 'sizeof(void *) > 4'
4864         spic=$shared
4865     ;;
4866     ppc)
4867         check_64bit ppc ppc64 'sizeof(void *) > 4'
4868         spic=$shared
4869     ;;
4870