Merge commit 'b46900914a1f25ce8dbf49d7c53766ff1f18b60f'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_sanitized $header
1113     check_cpp "$@" <<EOF && enable_sanitized $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_sanitized $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 test_pkg_config(){
1273     log test_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_sanitized "${name}_cflags"    $pkg_cflags &&
1287         set_sanitized "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_pkg_config(){
1291     log check_pkg_config "$@"
1292     name="$1"
1293     test_pkg_config "$@" &&
1294         eval add_cflags \$${name}_cflags
1295 }
1296
1297 check_exec(){
1298     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1299 }
1300
1301 check_exec_crash(){
1302     log check_exec_crash "$@"
1303     code=$(cat)
1304
1305     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1306     # are safe but may not be available everywhere.  Thus we use
1307     # raise(SIGTERM) instead.  The check is run in a subshell so we
1308     # can redirect the "Terminated" message from the shell.  SIGBUS
1309     # is not defined by standard C so it is used conditionally.
1310
1311     (check_exec "$@") >> $logfile 2>&1 <<EOF
1312 #include <signal.h>
1313 static void sighandler(int sig){
1314     raise(SIGTERM);
1315 }
1316 int foo(void){
1317     $code
1318 }
1319 int (*func_ptr)(void) = foo;
1320 int main(void){
1321     signal(SIGILL, sighandler);
1322     signal(SIGFPE, sighandler);
1323     signal(SIGSEGV, sighandler);
1324 #ifdef SIGBUS
1325     signal(SIGBUS, sighandler);
1326 #endif
1327     return func_ptr();
1328 }
1329 EOF
1330 }
1331
1332 check_type(){
1333     log check_type "$@"
1334     headers=$1
1335     type=$2
1336     shift 2
1337     disable_sanitized "$type"
1338     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1339 }
1340
1341 check_struct(){
1342     log check_struct "$@"
1343     headers=$1
1344     struct=$2
1345     member=$3
1346     shift 3
1347     disable_sanitized "${struct}_${member}"
1348     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1349         enable_sanitized "${struct}_${member}"
1350 }
1351
1352 check_builtin(){
1353     log check_builtin "$@"
1354     name=$1
1355     headers=$2
1356     builtin=$3
1357     shift 3
1358     disable "$name"
1359     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1360 }
1361
1362 check_compile_assert(){
1363     log check_compile_assert "$@"
1364     name=$1
1365     headers=$2
1366     condition=$3
1367     shift 3
1368     disable "$name"
1369     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1370 }
1371
1372 require(){
1373     log require "$@"
1374     name_version="$1"
1375     name="${1%% *}"
1376     headers="$2"
1377     func="$3"
1378     shift 3
1379     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1380 }
1381
1382 require_cpp(){
1383     name="$1"
1384     headers="$2"
1385     classes="$3"
1386     shift 3
1387     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1388 }
1389
1390 require_header(){
1391     log require "$@"
1392     header="$1"
1393     shift
1394     check_header "$header" "$@" || die "ERROR: $header header not found"
1395 }
1396
1397 require_cpp_condition(){
1398     log require "$@"
1399     header="$1"
1400     condition="$2"
1401     shift 2
1402     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 COMPONENT_LIST="
1494     $AVCODEC_COMPONENTS
1495     $AVDEVICE_COMPONENTS
1496     $AVFILTER_COMPONENTS
1497     $AVFORMAT_COMPONENTS
1498 "
1499
1500 EXAMPLE_LIST="
1501     avio_dir_cmd_example
1502     avio_reading_example
1503     decode_audio_example
1504     decode_video_example
1505     demuxing_decoding_example
1506     encode_audio_example
1507     encode_video_example
1508     extract_mvs_example
1509     filter_audio_example
1510     filtering_audio_example
1511     filtering_video_example
1512     http_multiclient_example
1513     hw_decode_example
1514     metadata_example
1515     muxing_example
1516     qsvdec_example
1517     remuxing_example
1518     resampling_audio_example
1519     scaling_video_example
1520     transcode_aac_example
1521     transcoding_example
1522 "
1523
1524 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1525     alsa
1526     appkit
1527     avfoundation
1528     bzlib
1529     coreimage
1530     iconv
1531     libxcb
1532     libxcb_shm
1533     libxcb_shape
1534     libxcb_xfixes
1535     lzma
1536     schannel
1537     sdl2
1538     securetransport
1539     sndio
1540     xlib
1541     zlib
1542 "
1543
1544 EXTERNAL_LIBRARY_GPL_LIST="
1545     avisynth
1546     frei0r
1547     libcdio
1548     librubberband
1549     libvidstab
1550     libx264
1551     libx265
1552     libxavs
1553     libxvid
1554 "
1555
1556 EXTERNAL_LIBRARY_NONFREE_LIST="
1557     decklink
1558     libndi_newtek
1559     libfdk_aac
1560     openssl
1561 "
1562
1563 EXTERNAL_LIBRARY_VERSION3_LIST="
1564     gmp
1565     libopencore_amrnb
1566     libopencore_amrwb
1567     libvmaf
1568     libvo_amrwbenc
1569     rkmpp
1570 "
1571
1572 EXTERNAL_LIBRARY_GPLV3_LIST="
1573     libsmbclient
1574 "
1575
1576 EXTERNAL_LIBRARY_LIST="
1577     $EXTERNAL_LIBRARY_GPL_LIST
1578     $EXTERNAL_LIBRARY_NONFREE_LIST
1579     $EXTERNAL_LIBRARY_VERSION3_LIST
1580     $EXTERNAL_LIBRARY_GPLV3_LIST
1581     chromaprint
1582     gcrypt
1583     gnutls
1584     jni
1585     ladspa
1586     libass
1587     libbluray
1588     libbs2b
1589     libcaca
1590     libcelt
1591     libdc1394
1592     libdrm
1593     libflite
1594     libfontconfig
1595     libfreetype
1596     libfribidi
1597     libgme
1598     libgsm
1599     libiec61883
1600     libilbc
1601     libjack
1602     libkvazaar
1603     libmodplug
1604     libmp3lame
1605     libmysofa
1606     libopencv
1607     libopenh264
1608     libopenjpeg
1609     libopenmpt
1610     libopus
1611     libpulse
1612     librsvg
1613     librtmp
1614     libshine
1615     libsmbclient
1616     libsnappy
1617     libsoxr
1618     libspeex
1619     libssh
1620     libtesseract
1621     libtheora
1622     libtwolame
1623     libv4l2
1624     libvorbis
1625     libvpx
1626     libwavpack
1627     libwebp
1628     libxml2
1629     libzimg
1630     libzmq
1631     libzvbi
1632     mediacodec
1633     openal
1634     opencl
1635     opengl
1636 "
1637
1638 HWACCEL_AUTODETECT_LIBRARY_LIST="
1639     audiotoolbox
1640     crystalhd
1641     cuda
1642     cuvid
1643     d3d11va
1644     dxva2
1645     nvdec
1646     nvenc
1647     vaapi
1648     vdpau
1649     videotoolbox
1650     v4l2_m2m
1651     xvmc
1652 "
1653
1654 # catchall list of things that require external libs to link
1655 EXTRALIBS_LIST="
1656     cpu_init
1657     cws2fws
1658 "
1659
1660 HWACCEL_LIBRARY_NONFREE_LIST="
1661     cuda_sdk
1662     libnpp
1663 "
1664
1665 HWACCEL_LIBRARY_LIST="
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1739     $HWACCEL_LIBRARY_LIST
1740     $HWACCEL_AUTODETECT_LIBRARY_LIST
1741     $FEATURE_LIST
1742     $LICENSE_LIST
1743     $LIBRARY_LIST
1744     $PROGRAM_LIST
1745     $SUBSYSTEM_LIST
1746     autodetect
1747     fontconfig
1748     linux_perf
1749     memory_poisoning
1750     neon_clobber_test
1751     ossfuzz
1752     pic
1753     thumb
1754     valgrind_backtrace
1755     xmm_clobber_test
1756     $COMPONENT_LIST
1757 "
1758
1759 THREADS_LIST="
1760     pthreads
1761     os2threads
1762     w32threads
1763 "
1764
1765 ATOMICS_LIST="
1766     atomics_gcc
1767     atomics_suncc
1768     atomics_win32
1769 "
1770
1771 AUTODETECT_LIBS="
1772     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1773     $HWACCEL_AUTODETECT_LIBRARY_LIST
1774     $THREADS_LIST
1775 "
1776
1777 ARCH_LIST="
1778     aarch64
1779     alpha
1780     arm
1781     avr32
1782     avr32_ap
1783     avr32_uc
1784     bfin
1785     ia64
1786     m68k
1787     mips
1788     mips64
1789     parisc
1790     ppc
1791     ppc64
1792     s390
1793     sh4
1794     sparc
1795     sparc64
1796     tilegx
1797     tilepro
1798     tomi
1799     x86
1800     x86_32
1801     x86_64
1802 "
1803
1804 ARCH_EXT_LIST_ARM="
1805     armv5te
1806     armv6
1807     armv6t2
1808     armv8
1809     neon
1810     vfp
1811     vfpv3
1812     setend
1813 "
1814
1815 ARCH_EXT_LIST_MIPS="
1816     mipsfpu
1817     mips32r2
1818     mips32r5
1819     mips64r2
1820     mips32r6
1821     mips64r6
1822     mipsdsp
1823     mipsdspr2
1824     msa
1825 "
1826
1827 ARCH_EXT_LIST_LOONGSON="
1828     loongson2
1829     loongson3
1830     mmi
1831 "
1832
1833 ARCH_EXT_LIST_X86_SIMD="
1834     aesni
1835     amd3dnow
1836     amd3dnowext
1837     avx
1838     avx2
1839     fma3
1840     fma4
1841     mmx
1842     mmxext
1843     sse
1844     sse2
1845     sse3
1846     sse4
1847     sse42
1848     ssse3
1849     xop
1850 "
1851
1852 ARCH_EXT_LIST_PPC="
1853     altivec
1854     dcbzl
1855     ldbrx
1856     power8
1857     ppc4xx
1858     vsx
1859 "
1860
1861 ARCH_EXT_LIST_X86="
1862     $ARCH_EXT_LIST_X86_SIMD
1863     cpunop
1864     i686
1865 "
1866
1867 ARCH_EXT_LIST="
1868     $ARCH_EXT_LIST_ARM
1869     $ARCH_EXT_LIST_PPC
1870     $ARCH_EXT_LIST_X86
1871     $ARCH_EXT_LIST_MIPS
1872     $ARCH_EXT_LIST_LOONGSON
1873 "
1874
1875 ARCH_FEATURES="
1876     aligned_stack
1877     fast_64bit
1878     fast_clz
1879     fast_cmov
1880     local_aligned
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     arpa_inet_h
1908     asm_types_h
1909     cdio_paranoia_h
1910     cdio_paranoia_paranoia_h
1911     cuda_h
1912     dispatch_dispatch_h
1913     dev_bktr_ioctl_bt848_h
1914     dev_bktr_ioctl_meteor_h
1915     dev_ic_bt8xx_h
1916     dev_video_bktr_ioctl_bt848_h
1917     dev_video_meteor_ioctl_meteor_h
1918     direct_h
1919     dirent_h
1920     dxgidebug_h
1921     dxva_h
1922     ES2_gl_h
1923     io_h
1924     machine_ioctl_bt848_h
1925     machine_ioctl_meteor_h
1926     malloc_h
1927     opencv2_core_core_c_h
1928     OpenGL_gl3_h
1929     poll_h
1930     stdatomic_h
1931     sys_param_h
1932     sys_resource_h
1933     sys_select_h
1934     sys_soundcard_h
1935     sys_time_h
1936     sys_un_h
1937     sys_videoio_h
1938     termios_h
1939     udplite_h
1940     unistd_h
1941     valgrind_valgrind_h
1942     windows_h
1943     winsock2_h
1944 "
1945
1946 INTRINSICS_LIST="
1947     intrinsics_neon
1948 "
1949
1950 COMPLEX_FUNCS="
1951     cabs
1952     cexp
1953 "
1954
1955 MATH_FUNCS="
1956     atanf
1957     atan2f
1958     cbrt
1959     cbrtf
1960     copysign
1961     cosf
1962     erf
1963     exp2
1964     exp2f
1965     expf
1966     hypot
1967     isfinite
1968     isinf
1969     isnan
1970     ldexpf
1971     llrint
1972     llrintf
1973     log2
1974     log2f
1975     log10f
1976     lrint
1977     lrintf
1978     powf
1979     rint
1980     round
1981     roundf
1982     sinf
1983     trunc
1984     truncf
1985 "
1986
1987 SYSTEM_FUNCS="
1988     access
1989     aligned_malloc
1990     arc4random
1991     clock_gettime
1992     closesocket
1993     CommandLineToArgvW
1994     CryptGenRandom
1995     fcntl
1996     getaddrinfo
1997     gethrtime
1998     getopt
1999     GetProcessAffinityMask
2000     GetProcessMemoryInfo
2001     GetProcessTimes
2002     getrusage
2003     GetSystemTimeAsFileTime
2004     gettimeofday
2005     glob
2006     glXGetProcAddress
2007     gmtime_r
2008     inet_aton
2009     isatty
2010     kbhit
2011     localtime_r
2012     lstat
2013     lzo1x_999_compress
2014     mach_absolute_time
2015     MapViewOfFile
2016     memalign
2017     mkstemp
2018     mmap
2019     mprotect
2020     nanosleep
2021     PeekNamedPipe
2022     posix_memalign
2023     pthread_cancel
2024     sched_getaffinity
2025     SetConsoleTextAttribute
2026     SetConsoleCtrlHandler
2027     setmode
2028     setrlimit
2029     Sleep
2030     strerror_r
2031     sysconf
2032     sysctl
2033     usleep
2034     UTGetOSTypeFromString
2035     VirtualAlloc
2036     wglGetProcAddress
2037 "
2038
2039 TOOLCHAIN_FEATURES="
2040     as_arch_directive
2041     as_fpu_directive
2042     as_func
2043     as_object_arch
2044     asm_mod_q
2045     blocks_extension
2046     ebp_available
2047     ebx_available
2048     gnu_as
2049     gnu_windres
2050     ibm_asm
2051     inline_asm_direct_symbol_refs
2052     inline_asm_labels
2053     inline_asm_nonlocal_labels
2054     pragma_deprecated
2055     rsync_contimeout
2056     symver_asm_label
2057     symver_gnu_asm
2058     vfp_args
2059     xform_asm
2060     xmm_clobbers
2061 "
2062
2063 TYPES_LIST="
2064     CONDITION_VARIABLE_Ptr
2065     kCMVideoCodecType_HEVC
2066     socklen_t
2067     struct_addrinfo
2068     struct_group_source_req
2069     struct_ip_mreq_source
2070     struct_ipv6_mreq
2071     struct_msghdr_msg_flags
2072     struct_pollfd
2073     struct_rusage_ru_maxrss
2074     struct_sctp_event_subscribe
2075     struct_sockaddr_in6
2076     struct_sockaddr_sa_len
2077     struct_sockaddr_storage
2078     struct_stat_st_mtim_tv_nsec
2079     struct_v4l2_frmivalenum_discrete
2080 "
2081
2082 HAVE_LIST="
2083     $ARCH_EXT_LIST
2084     $(add_suffix _external $ARCH_EXT_LIST)
2085     $(add_suffix _inline   $ARCH_EXT_LIST)
2086     $ARCH_FEATURES
2087     $ATOMICS_LIST
2088     $BUILTIN_LIST
2089     $COMPLEX_FUNCS
2090     $HAVE_LIST_CMDLINE
2091     $HAVE_LIST_PUB
2092     $HEADERS_LIST
2093     $INTRINSICS_LIST
2094     $MATH_FUNCS
2095     $SYSTEM_FUNCS
2096     $THREADS_LIST
2097     $TOOLCHAIN_FEATURES
2098     $TYPES_LIST
2099     atomics_native
2100     dos_paths
2101     libc_msvcrt
2102     makeinfo
2103     makeinfo_html
2104     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2105     perl
2106     pod2man
2107     section_data_rel_ro
2108     texi2html
2109     threads
2110     uwp
2111     vaapi_drm
2112     vaapi_x11
2113     vdpau_x11
2114     winrt
2115 "
2116
2117 # options emitted with CONFIG_ prefix but not available on the command line
2118 CONFIG_EXTRA="
2119     aandcttables
2120     ac3dsp
2121     adts_header
2122     audio_frame_queue
2123     audiodsp
2124     blockdsp
2125     bswapdsp
2126     cabac
2127     cbs
2128     cbs_h264
2129     cbs_h265
2130     cbs_mpeg2
2131     dirac_parse
2132     dvprofile
2133     exif
2134     faandct
2135     faanidct
2136     fdctdsp
2137     flacdsp
2138     fmtconvert
2139     frame_thread_encoder
2140     g722dsp
2141     golomb
2142     gplv3
2143     h263dsp
2144     h264chroma
2145     h264dsp
2146     h264parse
2147     h264pred
2148     h264qpel
2149     hevcparse
2150     hpeldsp
2151     huffman
2152     huffyuvdsp
2153     huffyuvencdsp
2154     idctdsp
2155     iirfilter
2156     mdct15
2157     intrax8
2158     iso_media
2159     ividsp
2160     jpegtables
2161     lgplv3
2162     libx262
2163     llauddsp
2164     llviddsp
2165     llvidencdsp
2166     lpc
2167     lzf
2168     me_cmp
2169     mpeg_er
2170     mpegaudio
2171     mpegaudiodsp
2172     mpegaudioheader
2173     mpegvideo
2174     mpegvideoenc
2175     mss34dsp
2176     pixblockdsp
2177     qpeldsp
2178     qsv
2179     qsvdec
2180     qsvenc
2181     qsvvpp
2182     rangecoder
2183     riffdec
2184     riffenc
2185     rtpdec
2186     rtpenc_chain
2187     rv34dsp
2188     sinewin
2189     snappy
2190     srtp
2191     startcode
2192     texturedsp
2193     texturedspenc
2194     tpeldsp
2195     vaapi_1
2196     vaapi_encode
2197     vc1dsp
2198     videodsp
2199     vp3dsp
2200     vp56dsp
2201     vp8dsp
2202     wma_freqs
2203     wmv2dsp
2204 "
2205
2206 CMDLINE_SELECT="
2207     $ARCH_EXT_LIST
2208     $CONFIG_LIST
2209     $HAVE_LIST_CMDLINE
2210     $THREADS_LIST
2211     asm
2212     cross_compile
2213     debug
2214     extra_warnings
2215     logging
2216     lto
2217     optimizations
2218     rpath
2219     stripping
2220 "
2221
2222 PATHS_LIST="
2223     bindir
2224     datadir
2225     docdir
2226     incdir
2227     libdir
2228     mandir
2229     pkgconfigdir
2230     prefix
2231     shlibdir
2232     install_name_dir
2233 "
2234
2235 CMDLINE_SET="
2236     $PATHS_LIST
2237     ar
2238     arch
2239     as
2240     assert_level
2241     build_suffix
2242     cc
2243     objcc
2244     cpu
2245     cross_prefix
2246     custom_allocator
2247     cxx
2248     dep_cc
2249     doxygen
2250     env
2251     extra_version
2252     gas
2253     host_cc
2254     host_cflags
2255     host_extralibs
2256     host_ld
2257     host_ldflags
2258     host_os
2259     ignore_tests
2260     install
2261     ld
2262     ln_s
2263     logfile
2264     malloc_prefix
2265     nm
2266     optflags
2267     nvccflags
2268     pkg_config
2269     pkg_config_flags
2270     progs_suffix
2271     random_seed
2272     ranlib
2273     samples
2274     strip
2275     sws_max_filter_size
2276     sysinclude
2277     sysroot
2278     target_exec
2279     target_os
2280     target_path
2281     target_samples
2282     tempprefix
2283     toolchain
2284     valgrind
2285     x86asmexe
2286 "
2287
2288 CMDLINE_APPEND="
2289     extra_cflags
2290     extra_cxxflags
2291     extra_objcflags
2292     host_cppflags
2293 "
2294
2295 # code dependency declarations
2296
2297 # architecture extensions
2298
2299 armv5te_deps="arm"
2300 armv6_deps="arm"
2301 armv6t2_deps="arm"
2302 armv8_deps="aarch64"
2303 neon_deps_any="aarch64 arm"
2304 intrinsics_neon_deps="neon"
2305 vfp_deps_any="aarch64 arm"
2306 vfpv3_deps="vfp"
2307 setend_deps="arm"
2308
2309 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2310
2311 altivec_deps="ppc"
2312 dcbzl_deps="ppc"
2313 ldbrx_deps="ppc"
2314 ppc4xx_deps="ppc"
2315 vsx_deps="altivec"
2316 power8_deps="vsx"
2317
2318 loongson2_deps="mips"
2319 loongson3_deps="mips"
2320 mips32r2_deps="mips"
2321 mips32r5_deps="mips"
2322 mips32r6_deps="mips"
2323 mips64r2_deps="mips"
2324 mips64r6_deps="mips"
2325 mipsfpu_deps="mips"
2326 mipsdsp_deps="mips"
2327 mipsdspr2_deps="mips"
2328 mmi_deps="mips"
2329 msa_deps="mipsfpu"
2330
2331 cpunop_deps="i686"
2332 x86_64_select="i686"
2333 x86_64_suggest="fast_cmov"
2334
2335 amd3dnow_deps="mmx"
2336 amd3dnowext_deps="amd3dnow"
2337 i686_deps="x86"
2338 mmx_deps="x86"
2339 mmxext_deps="mmx"
2340 sse_deps="mmxext"
2341 sse2_deps="sse"
2342 sse3_deps="sse2"
2343 ssse3_deps="sse3"
2344 sse4_deps="ssse3"
2345 sse42_deps="sse4"
2346 aesni_deps="sse42"
2347 avx_deps="sse42"
2348 xop_deps="avx"
2349 fma3_deps="avx"
2350 fma4_deps="avx"
2351 avx2_deps="avx"
2352
2353 mmx_external_deps="x86asm"
2354 mmx_inline_deps="inline_asm x86"
2355 mmx_suggest="mmx_external mmx_inline"
2356
2357 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2358     eval dep=\$${ext}_deps
2359     eval ${ext}_external_deps='"${dep}_external"'
2360     eval ${ext}_inline_deps='"${dep}_inline"'
2361     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2362 done
2363
2364 aligned_stack_if_any="aarch64 ppc x86"
2365 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2366 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2367 fast_unaligned_if_any="aarch64 ppc x86"
2368 simd_align_16_if_any="altivec neon sse"
2369 simd_align_32_if_any="avx"
2370
2371 # system capabilities
2372 symver_if_any="symver_asm_label symver_gnu_asm"
2373 valgrind_backtrace_conflict="optimizations"
2374 valgrind_backtrace_deps="valgrind_valgrind_h"
2375
2376 # threading support
2377 atomics_gcc_if="sync_val_compare_and_swap"
2378 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2379 atomics_win32_if="MemoryBarrier"
2380 atomics_native_if_any="$ATOMICS_LIST"
2381 w32threads_deps="atomics_native"
2382 threads_if_any="$THREADS_LIST"
2383
2384 # subsystems
2385 cbs_h264_select="cbs golomb"
2386 cbs_h265_select="cbs golomb"
2387 cbs_mpeg2_select="cbs"
2388 dct_select="rdft"
2389 dirac_parse_select="golomb"
2390 error_resilience_select="me_cmp"
2391 faandct_deps="faan"
2392 faandct_select="fdctdsp"
2393 faanidct_deps="faan"
2394 faanidct_select="idctdsp"
2395 h264dsp_select="startcode"
2396 hevcparse_select="golomb"
2397 frame_thread_encoder_deps="encoders threads"
2398 intrax8_select="blockdsp idctdsp"
2399 mdct_select="fft"
2400 mdct15_select="fft"
2401 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2402 mpeg_er_select="error_resilience"
2403 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2404 mpegaudiodsp_select="dct"
2405 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2406 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2407 vc1dsp_select="h264chroma qpeldsp startcode"
2408 rdft_select="fft"
2409
2410 # decoders / encoders
2411 aac_decoder_select="adts_header mdct15 mdct sinewin"
2412 aac_fixed_decoder_select="mdct sinewin"
2413 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2414 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2415 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2416 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2417 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2418 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2419 adpcm_g722_decoder_select="g722dsp"
2420 adpcm_g722_encoder_select="g722dsp"
2421 aic_decoder_select="golomb idctdsp"
2422 alac_encoder_select="lpc"
2423 als_decoder_select="bswapdsp"
2424 amrnb_decoder_select="lsp"
2425 amrwb_decoder_select="lsp"
2426 amv_decoder_select="sp5x_decoder exif"
2427 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2428 ape_decoder_select="bswapdsp llauddsp"
2429 apng_decoder_select="zlib"
2430 apng_encoder_select="llvidencdsp zlib"
2431 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2432 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2433 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2434 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2435 atrac1_decoder_select="mdct sinewin"
2436 atrac3_decoder_select="mdct"
2437 atrac3p_decoder_select="mdct sinewin"
2438 avrn_decoder_select="exif jpegtables"
2439 bink_decoder_select="blockdsp hpeldsp"
2440 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2441 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2442 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2443 clearvideo_decoder_select="idctdsp"
2444 cllc_decoder_select="bswapdsp"
2445 comfortnoise_encoder_select="lpc"
2446 cook_decoder_select="audiodsp mdct sinewin"
2447 cscd_decoder_select="lzo"
2448 cscd_decoder_suggest="zlib"
2449 dca_decoder_select="mdct"
2450 dds_decoder_select="texturedsp"
2451 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2452 dnxhd_decoder_select="blockdsp idctdsp"
2453 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2454 dolby_e_decoder_select="mdct"
2455 dvvideo_decoder_select="dvprofile idctdsp"
2456 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2457 dxa_decoder_select="zlib"
2458 dxv_decoder_select="lzf texturedsp"
2459 eac3_decoder_select="ac3_decoder"
2460 eac3_encoder_select="ac3_encoder"
2461 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2462 eatgq_decoder_select="aandcttables"
2463 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2464 exr_decoder_select="zlib"
2465 ffv1_decoder_select="rangecoder"
2466 ffv1_encoder_select="rangecoder"
2467 ffvhuff_decoder_select="huffyuv_decoder"
2468 ffvhuff_encoder_select="huffyuv_encoder"
2469 fic_decoder_select="golomb"
2470 flac_decoder_select="flacdsp"
2471 flac_encoder_select="bswapdsp flacdsp lpc"
2472 flashsv2_decoder_select="zlib"
2473 flashsv2_encoder_select="zlib"
2474 flashsv_decoder_select="zlib"
2475 flashsv_encoder_select="zlib"
2476 flv_decoder_select="h263_decoder"
2477 flv_encoder_select="h263_encoder"
2478 fourxm_decoder_select="blockdsp bswapdsp"
2479 fraps_decoder_select="bswapdsp huffman"
2480 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2481 g729_decoder_select="audiodsp"
2482 h261_decoder_select="mpegvideo"
2483 h261_encoder_select="aandcttables mpegvideoenc"
2484 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2485 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2486 h263i_decoder_select="h263_decoder"
2487 h263p_decoder_select="h263_decoder"
2488 h263p_encoder_select="h263_encoder"
2489 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2490 h264_decoder_suggest="error_resilience"
2491 hap_decoder_select="snappy texturedsp"
2492 hap_encoder_deps="libsnappy"
2493 hap_encoder_select="texturedspenc"
2494 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2495 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2496 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2497 iac_decoder_select="imc_decoder"
2498 imc_decoder_select="bswapdsp fft mdct sinewin"
2499 indeo3_decoder_select="hpeldsp"
2500 indeo4_decoder_select="ividsp"
2501 indeo5_decoder_select="ividsp"
2502 interplay_video_decoder_select="hpeldsp"
2503 jpegls_decoder_select="mjpeg_decoder"
2504 jv_decoder_select="blockdsp"
2505 lagarith_decoder_select="llviddsp"
2506 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2507 magicyuv_decoder_select="llviddsp"
2508 magicyuv_encoder_select="llvidencdsp"
2509 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2510 metasound_decoder_select="lsp mdct sinewin"
2511 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2512 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2513 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2514 mjpegb_decoder_select="mjpeg_decoder"
2515 mlp_decoder_select="mlp_parser"
2516 mlp_encoder_select="lpc"
2517 motionpixels_decoder_select="bswapdsp"
2518 mp1_decoder_select="mpegaudio"
2519 mp1float_decoder_select="mpegaudio"
2520 mp2_decoder_select="mpegaudio"
2521 mp2float_decoder_select="mpegaudio"
2522 mp3_decoder_select="mpegaudio"
2523 mp3adu_decoder_select="mpegaudio"
2524 mp3adufloat_decoder_select="mpegaudio"
2525 mp3float_decoder_select="mpegaudio"
2526 mp3on4_decoder_select="mpegaudio"
2527 mp3on4float_decoder_select="mpegaudio"
2528 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2529 mpc8_decoder_select="mpegaudiodsp"
2530 mpegvideo_decoder_select="mpegvideo"
2531 mpeg1video_decoder_select="mpegvideo"
2532 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2533 mpeg2video_decoder_select="mpegvideo"
2534 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2535 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2536 mpeg4_encoder_select="h263_encoder"
2537 msa1_decoder_select="mss34dsp"
2538 mscc_decoder_select="zlib"
2539 msmpeg4v1_decoder_select="h263_decoder"
2540 msmpeg4v2_decoder_select="h263_decoder"
2541 msmpeg4v2_encoder_select="h263_encoder"
2542 msmpeg4v3_decoder_select="h263_decoder"
2543 msmpeg4v3_encoder_select="h263_encoder"
2544 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2545 mts2_decoder_select="mss34dsp"
2546 mxpeg_decoder_select="mjpeg_decoder"
2547 nellymoser_decoder_select="mdct sinewin"
2548 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2549 nuv_decoder_select="idctdsp lzo"
2550 on2avc_decoder_select="mdct"
2551 opus_decoder_deps="swresample"
2552 opus_decoder_select="mdct15"
2553 opus_encoder_select="audio_frame_queue mdct15"
2554 png_decoder_select="zlib"
2555 png_encoder_select="llvidencdsp zlib"
2556 prores_decoder_select="blockdsp idctdsp"
2557 prores_encoder_select="fdctdsp"
2558 qcelp_decoder_select="lsp"
2559 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2560 ra_144_decoder_select="audiodsp"
2561 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2562 ralf_decoder_select="golomb"
2563 rawvideo_decoder_select="bswapdsp"
2564 rscc_decoder_select="zlib"
2565 rtjpeg_decoder_select="me_cmp"
2566 rv10_decoder_select="h263_decoder"
2567 rv10_encoder_select="h263_encoder"
2568 rv20_decoder_select="h263_decoder"
2569 rv20_encoder_select="h263_encoder"
2570 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2571 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2572 screenpresso_decoder_select="zlib"
2573 shorten_decoder_select="bswapdsp"
2574 sipr_decoder_select="lsp"
2575 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2576 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2577 sonic_decoder_select="golomb rangecoder"
2578 sonic_encoder_select="golomb rangecoder"
2579 sonic_ls_encoder_select="golomb rangecoder"
2580 sp5x_decoder_select="mjpeg_decoder"
2581 srgc_decoder_select="zlib"
2582 svq1_decoder_select="hpeldsp"
2583 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2584 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2585 svq3_decoder_suggest="zlib"
2586 tak_decoder_select="audiodsp"
2587 tdsc_decoder_select="zlib mjpeg_decoder"
2588 theora_decoder_select="vp3_decoder"
2589 thp_decoder_select="mjpeg_decoder"
2590 tiff_decoder_suggest="zlib lzma"
2591 tiff_encoder_suggest="zlib"
2592 truehd_decoder_select="mlp_parser"
2593 truehd_encoder_select="lpc"
2594 truemotion2_decoder_select="bswapdsp"
2595 truespeech_decoder_select="bswapdsp"
2596 tscc_decoder_select="zlib"
2597 twinvq_decoder_select="mdct lsp sinewin"
2598 txd_decoder_select="texturedsp"
2599 utvideo_decoder_select="bswapdsp llviddsp"
2600 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2601 vble_decoder_select="llviddsp"
2602 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2603 vc1image_decoder_select="vc1_decoder"
2604 vorbis_decoder_select="mdct"
2605 vorbis_encoder_select="mdct"
2606 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2607 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2608 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2609 vp6a_decoder_select="vp6_decoder"
2610 vp6f_decoder_select="vp6_decoder"
2611 vp7_decoder_select="h264pred videodsp vp8dsp"
2612 vp8_decoder_select="h264pred videodsp vp8dsp"
2613 vp9_decoder_select="videodsp vp9_parser"
2614 webp_decoder_select="vp8_decoder exif"
2615 wmalossless_decoder_select="llauddsp"
2616 wmapro_decoder_select="mdct sinewin wma_freqs"
2617 wmav1_decoder_select="mdct sinewin wma_freqs"
2618 wmav1_encoder_select="mdct sinewin wma_freqs"
2619 wmav2_decoder_select="mdct sinewin wma_freqs"
2620 wmav2_encoder_select="mdct sinewin wma_freqs"
2621 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2622 wmv1_decoder_select="h263_decoder"
2623 wmv1_encoder_select="h263_encoder"
2624 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2625 wmv2_encoder_select="h263_encoder wmv2dsp"
2626 wmv3_decoder_select="vc1_decoder"
2627 wmv3image_decoder_select="wmv3_decoder"
2628 xma1_decoder_select="wmapro_decoder"
2629 xma2_decoder_select="wmapro_decoder"
2630 zerocodec_decoder_select="zlib"
2631 zlib_decoder_select="zlib"
2632 zlib_encoder_select="zlib"
2633 zmbv_decoder_select="zlib"
2634 zmbv_encoder_select="zlib"
2635
2636 # hardware accelerators
2637 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2638 cuda_deps_any="libdl LoadLibrary"
2639 cuvid_deps="cuda"
2640 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2641 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2642 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2643 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2644 xvmc_deps="X11_extensions_XvMClib_h"
2645
2646 h263_vaapi_hwaccel_deps="vaapi"
2647 h263_vaapi_hwaccel_select="h263_decoder"
2648 h263_videotoolbox_hwaccel_deps="videotoolbox"
2649 h263_videotoolbox_hwaccel_select="h263_decoder"
2650 h264_cuvid_hwaccel_deps="cuda cuvid"
2651 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2652 h264_d3d11va_hwaccel_deps="d3d11va"
2653 h264_d3d11va_hwaccel_select="h264_decoder"
2654 h264_d3d11va2_hwaccel_deps="d3d11va"
2655 h264_d3d11va2_hwaccel_select="h264_decoder"
2656 h264_dxva2_hwaccel_deps="dxva2"
2657 h264_dxva2_hwaccel_select="h264_decoder"
2658 h264_mediacodec_hwaccel_deps="mediacodec"
2659 h264_mmal_hwaccel_deps="mmal"
2660 h264_nvdec_hwaccel_deps="cuda nvdec"
2661 h264_nvdec_hwaccel_select="h264_decoder"
2662 h264_qsv_hwaccel_deps="libmfx"
2663 h264_vaapi_hwaccel_deps="vaapi"
2664 h264_vaapi_hwaccel_select="h264_decoder"
2665 h264_vdpau_hwaccel_deps="vdpau"
2666 h264_vdpau_hwaccel_select="h264_decoder"
2667 h264_videotoolbox_hwaccel_deps="videotoolbox"
2668 h264_videotoolbox_hwaccel_select="h264_decoder"
2669 hevc_cuvid_hwaccel_deps="cuda cuvid"
2670 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2671 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2672 hevc_d3d11va_hwaccel_select="hevc_decoder"
2673 hevc_mediacodec_hwaccel_deps="mediacodec"
2674 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2675 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2676 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2677 hevc_dxva2_hwaccel_select="hevc_decoder"
2678 hevc_nvdec_hwaccel_deps="cuda nvdec"
2679 hevc_nvdec_hwaccel_select="hevc_decoder"
2680 hevc_qsv_hwaccel_deps="libmfx"
2681 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2682 hevc_vaapi_hwaccel_select="hevc_decoder"
2683 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2684 hevc_vdpau_hwaccel_select="hevc_decoder"
2685 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2686 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2687 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2688 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2689 mpeg_xvmc_hwaccel_deps="xvmc"
2690 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2691 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2692 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2693 mpeg1_vdpau_hwaccel_deps="vdpau"
2694 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2695 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2696 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2697 mpeg1_xvmc_hwaccel_deps="xvmc"
2698 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2699 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2700 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2701 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2702 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2703 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2704 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_dxva2_hwaccel_deps="dxva2"
2706 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2707 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2708 mpeg2_mmal_hwaccel_deps="mmal"
2709 mpeg2_qsv_hwaccel_deps="libmfx"
2710 mpeg2_vaapi_hwaccel_deps="vaapi"
2711 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_vdpau_hwaccel_deps="vdpau"
2713 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_xvmc_hwaccel_deps="xvmc"
2717 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2718 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2719 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2720 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg4_mmal_hwaccel_deps="mmal"
2722 mpeg4_vaapi_hwaccel_deps="vaapi"
2723 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2724 mpeg4_vdpau_hwaccel_deps="vdpau"
2725 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2726 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2727 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2728 vc1_cuvid_hwaccel_deps="cuda cuvid"
2729 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2730 vc1_d3d11va_hwaccel_deps="d3d11va"
2731 vc1_d3d11va_hwaccel_select="vc1_decoder"
2732 vc1_d3d11va2_hwaccel_deps="d3d11va"
2733 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2734 vc1_dxva2_hwaccel_deps="dxva2"
2735 vc1_dxva2_hwaccel_select="vc1_decoder"
2736 vc1_mmal_hwaccel_deps="mmal"
2737 vc1_qsv_hwaccel_deps="libmfx"
2738 vc1_vaapi_hwaccel_deps="vaapi"
2739 vc1_vaapi_hwaccel_select="vc1_decoder"
2740 vc1_vdpau_hwaccel_deps="vdpau"
2741 vc1_vdpau_hwaccel_select="vc1_decoder"
2742 vp8_cuvid_hwaccel_deps="cuda cuvid"
2743 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2744 vp9_cuvid_hwaccel_deps="cuda cuvid"
2745 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2746 vp8_mediacodec_hwaccel_deps="mediacodec"
2747 vp8_qsv_hwaccel_deps="libmfx"
2748 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2749 vp9_d3d11va_hwaccel_select="vp9_decoder"
2750 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2751 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2752 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2753 vp9_dxva2_hwaccel_select="vp9_decoder"
2754 vp9_mediacodec_hwaccel_deps="mediacodec"
2755 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2756 vp9_vaapi_hwaccel_select="vp9_decoder"
2757 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2758 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2759 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2760 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2761 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2762
2763 # hardware-accelerated codecs
2764 omx_deps="libdl pthreads"
2765 omx_rpi_select="omx"
2766 qsv_deps="libmfx"
2767 qsvdec_select="qsv"
2768 qsvenc_select="qsv"
2769 qsvvpp_select="qsv"
2770 vaapi_encode_deps="vaapi"
2771 v4l2_m2m_deps_any="linux_videodev2_h"
2772
2773 hwupload_cuda_filter_deps="cuda"
2774 scale_npp_filter_deps="cuda libnpp"
2775 scale_cuda_filter_deps="cuda_sdk"
2776 thumbnail_cuda_filter_deps="cuda_sdk"
2777
2778 nvenc_deps="cuda"
2779 nvenc_deps_any="libdl LoadLibrary"
2780 nvenc_encoder_deps="nvenc"
2781
2782 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2783 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2784 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2785 h264_cuvid_decoder_deps="cuda cuvid"
2786 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2787 h264_mediacodec_decoder_deps="mediacodec"
2788 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2789 h264_mmal_decoder_deps="mmal"
2790 h264_nvenc_encoder_deps="nvenc"
2791 h264_omx_encoder_deps="omx"
2792 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2793 h264_qsv_encoder_select="qsvenc"
2794 h264_rkmpp_decoder_deps="rkmpp"
2795 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2796 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2797 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2798 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2799 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2800 hevc_cuvid_decoder_deps="cuda cuvid"
2801 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2802 hevc_mediacodec_decoder_deps="mediacodec"
2803 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2804 hevc_nvenc_encoder_deps="nvenc"
2805 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2806 hevc_qsv_encoder_select="hevcparse qsvenc"
2807 hevc_rkmpp_decoder_deps="rkmpp"
2808 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2809 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2810 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2811 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2812 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2813 mjpeg_cuvid_decoder_deps="cuda cuvid"
2814 mjpeg_qsv_encoder_deps="libmfx"
2815 mjpeg_qsv_encoder_select="qsvenc"
2816 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2817 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2818 mpeg1_cuvid_decoder_deps="cuda cuvid"
2819 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2820 mpeg2_crystalhd_decoder_select="crystalhd"
2821 mpeg2_cuvid_decoder_deps="cuda cuvid"
2822 mpeg2_mmal_decoder_deps="mmal"
2823 mpeg2_mediacodec_decoder_deps="mediacodec"
2824 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2825 mpeg2_qsv_encoder_select="qsvenc"
2826 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2827 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2828 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2829 mpeg4_crystalhd_decoder_select="crystalhd"
2830 mpeg4_cuvid_decoder_deps="cuda cuvid"
2831 mpeg4_mediacodec_decoder_deps="mediacodec"
2832 mpeg4_mmal_decoder_deps="mmal"
2833 mpeg4_omx_encoder_deps="omx"
2834 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2835 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2836 msmpeg4_crystalhd_decoder_select="crystalhd"
2837 nvenc_h264_encoder_select="h264_nvenc_encoder"
2838 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2839 vc1_crystalhd_decoder_select="crystalhd"
2840 vc1_cuvid_decoder_deps="cuda cuvid"
2841 vc1_mmal_decoder_deps="mmal"
2842 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2843 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2844 vp8_cuvid_decoder_deps="cuda cuvid"
2845 vp8_mediacodec_decoder_deps="mediacodec"
2846 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2847 vp8_rkmpp_decoder_deps="rkmpp"
2848 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2849 vp8_vaapi_encoder_select="vaapi_encode"
2850 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2851 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp9_cuvid_decoder_deps="cuda cuvid"
2853 vp9_mediacodec_decoder_deps="mediacodec"
2854 vp9_rkmpp_decoder_deps="rkmpp"
2855 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2856 vp9_vaapi_encoder_select="vaapi_encode"
2857 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2858 wmv3_crystalhd_decoder_select="crystalhd"
2859
2860 # parsers
2861 aac_parser_select="adts_header"
2862 h264_parser_select="golomb h264dsp h264parse"
2863 hevc_parser_select="hevcparse"
2864 mpegaudio_parser_select="mpegaudioheader"
2865 mpegvideo_parser_select="mpegvideo"
2866 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2867 vc1_parser_select="vc1dsp"
2868
2869 # bitstream_filters
2870 aac_adtstoasc_bsf_select="adts_header"
2871 h264_metadata_bsf_select="cbs_h264"
2872 h264_redundant_pps_bsf_select="cbs_h264"
2873 hevc_metadata_bsf_select="cbs_h265"
2874 mjpeg2jpeg_bsf_select="jpegtables"
2875 mpeg2_metadata_bsf_select="cbs_mpeg2"
2876 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2877
2878 # external libraries
2879 aac_at_decoder_deps="audiotoolbox"
2880 ac3_at_decoder_deps="audiotoolbox"
2881 ac3_at_decoder_select="ac3_parser"
2882 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2883 alac_at_decoder_deps="audiotoolbox"
2884 amr_nb_at_decoder_deps="audiotoolbox"
2885 avisynth_deps_any="libdl LoadLibrary"
2886 avisynth_demuxer_deps="avisynth"
2887 avisynth_demuxer_select="riffdec"
2888 eac3_at_decoder_deps="audiotoolbox"
2889 eac3_at_decoder_select="ac3_parser"
2890 gsm_ms_at_decoder_deps="audiotoolbox"
2891 ilbc_at_decoder_deps="audiotoolbox"
2892 mp1_at_decoder_deps="audiotoolbox"
2893 mp2_at_decoder_deps="audiotoolbox"
2894 mp3_at_decoder_deps="audiotoolbox"
2895 mp1_at_decoder_select="mpegaudioheader"
2896 mp2_at_decoder_select="mpegaudioheader"
2897 mp3_at_decoder_select="mpegaudioheader"
2898 pcm_alaw_at_decoder_deps="audiotoolbox"
2899 pcm_mulaw_at_decoder_deps="audiotoolbox"
2900 qdmc_at_decoder_deps="audiotoolbox"
2901 qdm2_at_decoder_deps="audiotoolbox"
2902 aac_at_encoder_deps="audiotoolbox"
2903 aac_at_encoder_select="audio_frame_queue"
2904 alac_at_encoder_deps="audiotoolbox"
2905 alac_at_encoder_select="audio_frame_queue"
2906 ilbc_at_encoder_deps="audiotoolbox"
2907 ilbc_at_encoder_select="audio_frame_queue"
2908 pcm_alaw_at_encoder_deps="audiotoolbox"
2909 pcm_alaw_at_encoder_select="audio_frame_queue"
2910 pcm_mulaw_at_encoder_deps="audiotoolbox"
2911 pcm_mulaw_at_encoder_select="audio_frame_queue"
2912 chromaprint_muxer_deps="chromaprint"
2913 h264_videotoolbox_encoder_deps="pthreads"
2914 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2915 libcelt_decoder_deps="libcelt"
2916 libfdk_aac_decoder_deps="libfdk_aac"
2917 libfdk_aac_encoder_deps="libfdk_aac"
2918 libfdk_aac_encoder_select="audio_frame_queue"
2919 libgme_demuxer_deps="libgme"
2920 libgsm_decoder_deps="libgsm"
2921 libgsm_encoder_deps="libgsm"
2922 libgsm_ms_decoder_deps="libgsm"
2923 libgsm_ms_encoder_deps="libgsm"
2924 libilbc_decoder_deps="libilbc"
2925 libilbc_encoder_deps="libilbc"
2926 libkvazaar_encoder_deps="libkvazaar"
2927 libmodplug_demuxer_deps="libmodplug"
2928 libmp3lame_encoder_deps="libmp3lame"
2929 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2930 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2931 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2932 libopencore_amrnb_encoder_select="audio_frame_queue"
2933 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2934 libopenh264_decoder_deps="libopenh264"
2935 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2936 libopenh264_encoder_deps="libopenh264"
2937 libopenjpeg_decoder_deps="libopenjpeg"
2938 libopenjpeg_encoder_deps="libopenjpeg"
2939 libopenmpt_demuxer_deps="libopenmpt"
2940 libopus_decoder_deps="libopus"
2941 libopus_encoder_deps="libopus"
2942 libopus_encoder_select="audio_frame_queue"
2943 librsvg_decoder_deps="librsvg"
2944 libshine_encoder_deps="libshine"
2945 libshine_encoder_select="audio_frame_queue"
2946 libspeex_decoder_deps="libspeex"
2947 libspeex_encoder_deps="libspeex"
2948 libspeex_encoder_select="audio_frame_queue"
2949 libtheora_encoder_deps="libtheora"
2950 libtwolame_encoder_deps="libtwolame"
2951 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2952 libvorbis_decoder_deps="libvorbis"
2953 libvorbis_encoder_deps="libvorbis libvorbisenc"
2954 libvorbis_encoder_select="audio_frame_queue"
2955 libvpx_vp8_decoder_deps="libvpx"
2956 libvpx_vp8_encoder_deps="libvpx"
2957 libvpx_vp9_decoder_deps="libvpx"
2958 libvpx_vp9_encoder_deps="libvpx"
2959 libwavpack_encoder_deps="libwavpack"
2960 libwavpack_encoder_select="audio_frame_queue"
2961 libwebp_encoder_deps="libwebp"
2962 libwebp_anim_encoder_deps="libwebp"
2963 libx262_encoder_deps="libx262"
2964 libx264_encoder_deps="libx264"
2965 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2966 libx264rgb_encoder_select="libx264_encoder"
2967 libx265_encoder_deps="libx265"
2968 libxavs_encoder_deps="libxavs"
2969 libxvid_encoder_deps="libxvid"
2970 libzvbi_teletext_decoder_deps="libzvbi"
2971 videotoolbox_suggest="coreservices"
2972 videotoolbox_deps="corefoundation coremedia corevideo"
2973 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2974
2975 # demuxers / muxers
2976 ac3_demuxer_select="ac3_parser"
2977 aiff_muxer_select="iso_media"
2978 asf_demuxer_select="riffdec"
2979 asf_o_demuxer_select="riffdec"
2980 asf_muxer_select="riffenc"
2981 asf_stream_muxer_select="asf_muxer"
2982 avi_demuxer_select="iso_media riffdec exif"
2983 avi_muxer_select="riffenc"
2984 caf_demuxer_select="iso_media riffdec"
2985 caf_muxer_select="iso_media"
2986 dash_muxer_select="mp4_muxer"
2987 dash_demuxer_deps="libxml2"
2988 dirac_demuxer_select="dirac_parser"
2989 dts_demuxer_select="dca_parser"
2990 dtshd_demuxer_select="dca_parser"
2991 dv_demuxer_select="dvprofile"
2992 dv_muxer_select="dvprofile"
2993 dxa_demuxer_select="riffdec"
2994 eac3_demuxer_select="ac3_parser"
2995 f4v_muxer_select="mov_muxer"
2996 fifo_muxer_deps="threads"
2997 flac_demuxer_select="flac_parser"
2998 hds_muxer_select="flv_muxer"
2999 hls_muxer_select="mpegts_muxer"
3000 hls_muxer_suggest="gcrypt openssl"
3001 image2_alias_pix_demuxer_select="image2_demuxer"
3002 image2_brender_pix_demuxer_select="image2_demuxer"
3003 ipod_muxer_select="mov_muxer"
3004 ismv_muxer_select="mov_muxer"
3005 matroska_audio_muxer_select="matroska_muxer"
3006 matroska_demuxer_select="iso_media riffdec"
3007 matroska_demuxer_suggest="bzlib lzo zlib"
3008 matroska_muxer_select="iso_media riffenc"
3009 mmf_muxer_select="riffenc"
3010 mov_demuxer_select="iso_media riffdec"
3011 mov_demuxer_suggest="zlib"
3012 mov_muxer_select="iso_media riffenc rtpenc_chain"
3013 mp3_demuxer_select="mpegaudio_parser"
3014 mp3_muxer_select="mpegaudioheader"
3015 mp4_muxer_select="mov_muxer"
3016 mpegts_demuxer_select="iso_media"
3017 mpegts_muxer_select="adts_muxer latm_muxer"
3018 mpegtsraw_demuxer_select="mpegts_demuxer"
3019 mxf_d10_muxer_select="mxf_muxer"
3020 mxf_opatom_muxer_select="mxf_muxer"
3021 nut_muxer_select="riffenc"
3022 nuv_demuxer_select="riffdec"
3023 oga_muxer_select="ogg_muxer"
3024 ogg_demuxer_select="dirac_parse"
3025 ogv_muxer_select="ogg_muxer"
3026 opus_muxer_select="ogg_muxer"
3027 psp_muxer_select="mov_muxer"
3028 rtp_demuxer_select="sdp_demuxer"
3029 rtp_muxer_select="golomb"
3030 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3031 rtsp_demuxer_select="http_protocol rtpdec"
3032 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3033 sap_demuxer_select="sdp_demuxer"
3034 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3035 sdp_demuxer_select="rtpdec"
3036 smoothstreaming_muxer_select="ismv_muxer"
3037 spdif_demuxer_select="adts_header"
3038 spdif_muxer_select="adts_header"
3039 spx_muxer_select="ogg_muxer"
3040 swf_demuxer_suggest="zlib"
3041 tak_demuxer_select="tak_parser"
3042 tg2_muxer_select="mov_muxer"
3043 tgp_muxer_select="mov_muxer"
3044 vobsub_demuxer_select="mpegps_demuxer"
3045 w64_demuxer_select="wav_demuxer"
3046 w64_muxer_select="wav_muxer"
3047 wav_demuxer_select="riffdec"
3048 wav_muxer_select="riffenc"
3049 webm_muxer_select="iso_media riffenc"
3050 webm_dash_manifest_demuxer_select="matroska_demuxer"
3051 wtv_demuxer_select="mpegts_demuxer riffdec"
3052 wtv_muxer_select="mpegts_muxer riffenc"
3053 xmv_demuxer_select="riffdec"
3054 xwma_demuxer_select="riffdec"
3055
3056 # indevs / outdevs
3057 alsa_indev_deps="alsa"
3058 alsa_outdev_deps="alsa"
3059 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3060 avfoundation_indev_suggest="coregraphics applicationservices"
3061 avfoundation_indev_extralibs="-framework Foundation"
3062 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3063 caca_outdev_deps="libcaca"
3064 decklink_deps_any="libdl LoadLibrary"
3065 decklink_indev_deps="decklink threads"
3066 decklink_indev_extralibs="-lstdc++"
3067 decklink_outdev_deps="decklink threads"
3068 decklink_outdev_extralibs="-lstdc++"
3069 libndi_newtek_indev_deps="libndi_newtek"
3070 libndi_newtek_indev_extralibs="-lndi"
3071 libndi_newtek_outdev_deps="libndi_newtek"
3072 libndi_newtek_outdev_extralibs="-lndi"
3073 dshow_indev_deps="IBaseFilter"
3074 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3075 fbdev_indev_deps="linux_fb_h"
3076 fbdev_outdev_deps="linux_fb_h"
3077 gdigrab_indev_deps="CreateDIBSection"
3078 gdigrab_indev_extralibs="-lgdi32"
3079 gdigrab_indev_select="bmp_decoder"
3080 iec61883_indev_deps="libiec61883"
3081 jack_indev_deps="libjack"
3082 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3083 kmsgrab_indev_deps="libdrm"
3084 lavfi_indev_deps="avfilter"
3085 libcdio_indev_deps="libcdio"
3086 libdc1394_indev_deps="libdc1394"
3087 openal_indev_deps="openal"
3088 opengl_outdev_deps="opengl"
3089 oss_indev_deps_any="sys_soundcard_h"
3090 oss_outdev_deps_any="sys_soundcard_h"
3091 pulse_indev_deps="libpulse"
3092 pulse_outdev_deps="libpulse"
3093 sdl2_outdev_deps="sdl2"
3094 sndio_indev_deps="sndio"
3095 sndio_outdev_deps="sndio"
3096 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3097 v4l2_indev_suggest="libv4l2"
3098 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3099 v4l2_outdev_suggest="libv4l2"
3100 vfwcap_indev_deps="vfw32 vfwcap_defines"
3101 xcbgrab_indev_deps="libxcb"
3102 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3103 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3104 xv_outdev_extralibs="-lXv -lX11 -lXext"
3105
3106 # protocols
3107 async_protocol_deps="threads"
3108 bluray_protocol_deps="libbluray"
3109 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3110 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3111 ffrtmpcrypt_protocol_select="tcp_protocol"
3112 ffrtmphttp_protocol_conflict="librtmp_protocol"
3113 ffrtmphttp_protocol_select="http_protocol"
3114 ftp_protocol_select="tcp_protocol"
3115 gopher_protocol_select="network"
3116 http_protocol_select="tcp_protocol"
3117 http_protocol_suggest="zlib"
3118 httpproxy_protocol_select="tcp_protocol"
3119 httpproxy_protocol_suggest="zlib"
3120 https_protocol_select="tls_protocol"
3121 https_protocol_suggest="zlib"
3122 icecast_protocol_select="http_protocol"
3123 librtmp_protocol_deps="librtmp"
3124 librtmpe_protocol_deps="librtmp"
3125 librtmps_protocol_deps="librtmp"
3126 librtmpt_protocol_deps="librtmp"
3127 librtmpte_protocol_deps="librtmp"
3128 libsmbclient_protocol_deps="libsmbclient gplv3"
3129 libssh_protocol_deps="libssh"
3130 mmsh_protocol_select="http_protocol"
3131 mmst_protocol_select="network"
3132 rtmp_protocol_conflict="librtmp_protocol"
3133 rtmp_protocol_select="tcp_protocol"
3134 rtmp_protocol_suggest="zlib"
3135 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3136 rtmpe_protocol_suggest="zlib"
3137 rtmps_protocol_conflict="librtmp_protocol"
3138 rtmps_protocol_select="tls_protocol"
3139 rtmps_protocol_suggest="zlib"
3140 rtmpt_protocol_select="ffrtmphttp_protocol"
3141 rtmpt_protocol_suggest="zlib"
3142 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3143 rtmpte_protocol_suggest="zlib"
3144 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3145 rtmpts_protocol_suggest="zlib"
3146 rtp_protocol_select="udp_protocol"
3147 schannel_conflict="openssl gnutls"
3148 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3149 sctp_protocol_select="network"
3150 securetransport_conflict="openssl gnutls"
3151 srtp_protocol_select="rtp_protocol srtp"
3152 tcp_protocol_select="network"
3153 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3154 tls_protocol_select="tcp_protocol"
3155 udp_protocol_select="network"
3156 udplite_protocol_select="network"
3157 unix_protocol_deps="sys_un_h"
3158 unix_protocol_select="network"
3159
3160 # filters
3161 afftfilt_filter_deps="avcodec"
3162 afftfilt_filter_select="fft"
3163 afir_filter_deps="avcodec"
3164 afir_filter_select="fft"
3165 amovie_filter_deps="avcodec avformat"
3166 aresample_filter_deps="swresample"
3167 ass_filter_deps="libass"
3168 atempo_filter_deps="avcodec"
3169 atempo_filter_select="rdft"
3170 azmq_filter_deps="libzmq"
3171 blackframe_filter_deps="gpl"
3172 boxblur_filter_deps="gpl"
3173 bs2b_filter_deps="libbs2b"
3174 colormatrix_filter_deps="gpl"
3175 coreimage_filter_deps="coreimage appkit"
3176 coreimage_filter_extralibs="-framework OpenGL"
3177 coreimagesrc_filter_deps="coreimage appkit"
3178 coreimagesrc_filter_extralibs="-framework OpenGL"
3179 cover_rect_filter_deps="avcodec avformat gpl"
3180 cropdetect_filter_deps="gpl"
3181 deinterlace_qsv_filter_deps="libmfx"
3182 deinterlace_vaapi_filter_deps="vaapi"
3183 delogo_filter_deps="gpl"
3184 deshake_filter_select="pixelutils"
3185 deshake_filter_suggest="opencl"
3186 drawtext_filter_deps="libfreetype"
3187 drawtext_filter_suggest="libfontconfig libfribidi"
3188 elbg_filter_deps="avcodec"
3189 eq_filter_deps="gpl"
3190 fftfilt_filter_deps="avcodec"
3191 fftfilt_filter_select="rdft"
3192 find_rect_filter_deps="avcodec avformat gpl"
3193 firequalizer_filter_deps="avcodec"
3194 firequalizer_filter_select="rdft"
3195 flite_filter_deps="libflite"
3196 framerate_filter_select="pixelutils"
3197 frei0r_filter_deps="frei0r libdl"
3198 frei0r_src_filter_deps="frei0r libdl"
3199 fspp_filter_deps="gpl"
3200 geq_filter_deps="gpl"
3201 histeq_filter_deps="gpl"
3202 hqdn3d_filter_deps="gpl"
3203 interlace_filter_deps="gpl"
3204 kerndeint_filter_deps="gpl"
3205 ladspa_filter_deps="ladspa libdl"
3206 mcdeint_filter_deps="avcodec gpl"
3207 movie_filter_deps="avcodec avformat"
3208 mpdecimate_filter_deps="gpl"
3209 mpdecimate_filter_select="pixelutils"
3210 mptestsrc_filter_deps="gpl"
3211 negate_filter_deps="lut_filter"
3212 nnedi_filter_deps="gpl"
3213 ocr_filter_deps="libtesseract"
3214 ocv_filter_deps="libopencv"
3215 overlay_qsv_filter_deps="libmfx"
3216 overlay_qsv_filter_select="qsvvpp"
3217 owdenoise_filter_deps="gpl"
3218 pan_filter_deps="swresample"
3219 perspective_filter_deps="gpl"
3220 phase_filter_deps="gpl"
3221 pp7_filter_deps="gpl"
3222 pp_filter_deps="gpl postproc"
3223 pullup_filter_deps="gpl"
3224 removelogo_filter_deps="avcodec avformat swscale"
3225 repeatfields_filter_deps="gpl"
3226 resample_filter_deps="avresample"
3227 rubberband_filter_deps="librubberband"
3228 sab_filter_deps="gpl swscale"
3229 scale2ref_filter_deps="swscale"
3230 scale_filter_deps="swscale"
3231 scale_qsv_filter_deps="libmfx"
3232 select_filter_select="pixelutils"
3233 showcqt_filter_deps="avcodec avformat swscale"
3234 showcqt_filter_suggest="libfontconfig libfreetype"
3235 showcqt_filter_select="fft"
3236 showfreqs_filter_deps="avcodec"
3237 showfreqs_filter_select="fft"
3238 showspectrum_filter_deps="avcodec"
3239 showspectrum_filter_select="fft"
3240 showspectrumpic_filter_deps="avcodec"
3241 showspectrumpic_filter_select="fft"
3242 signature_filter_deps="gpl avcodec avformat"
3243 smartblur_filter_deps="gpl swscale"
3244 sofalizer_filter_deps="libmysofa avcodec"
3245 sofalizer_filter_select="fft"
3246 spectrumsynth_filter_deps="avcodec"
3247 spectrumsynth_filter_select="fft"
3248 spp_filter_deps="gpl avcodec"
3249 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3250 stereo3d_filter_deps="gpl"
3251 subtitles_filter_deps="avformat avcodec libass"
3252 super2xsai_filter_deps="gpl"
3253 pixfmts_super2xsai_test_deps="super2xsai_filter"
3254 tinterlace_filter_deps="gpl"
3255 tinterlace_merge_test_deps="tinterlace_filter"
3256 tinterlace_pad_test_deps="tinterlace_filter"
3257 tonemap_filter_deps="const_nan"
3258 uspp_filter_deps="gpl avcodec"
3259 unsharp_filter_suggest="opencl"
3260 vaguedenoiser_filter_deps="gpl"
3261 vidstabdetect_filter_deps="libvidstab"
3262 vidstabtransform_filter_deps="libvidstab"
3263 libvmaf_filter_deps="libvmaf"
3264 zmq_filter_deps="libzmq"
3265 zoompan_filter_deps="swscale"
3266 zscale_filter_deps="libzimg const_nan"
3267 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3268 vpp_qsv_filter_deps="libmfx"
3269 vpp_qsv_filter_select="qsvvpp"
3270
3271 # examples
3272 avio_dir_cmd_deps="avformat avutil"
3273 avio_reading_deps="avformat avcodec avutil"
3274 decode_audio_example_deps="avcodec avutil"
3275 decode_video_example_deps="avcodec avutil"
3276 demuxing_decoding_example_deps="avcodec avformat avutil"
3277 encode_audio_example_deps="avcodec avutil"
3278 encode_video_example_deps="avcodec avutil"
3279 extract_mvs_example_deps="avcodec avformat avutil"
3280 filter_audio_example_deps="avfilter avutil"
3281 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3282 filtering_video_example_deps="avfilter avcodec avformat avutil"
3283 http_multiclient_example_deps="avformat avutil fork"
3284 hw_decode_example_deps="avcodec avformat avutil"
3285 metadata_example_deps="avformat avutil"
3286 muxing_example_deps="avcodec avformat avutil swscale"
3287 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3288 remuxing_example_deps="avcodec avformat avutil"
3289 resampling_audio_example_deps="avutil swresample"
3290 scaling_video_example_deps="avutil swscale"
3291 transcode_aac_example_deps="avcodec avformat swresample"
3292 transcoding_example_deps="avfilter avcodec avformat avutil"
3293
3294 # EXTRALIBS_LIST
3295 cpu_init_extralibs="pthreads_extralibs"
3296 cws2fws_extralibs="zlib_extralibs"
3297
3298 # libraries, in linking order
3299 avcodec_deps="avutil"
3300 avcodec_suggest="libm"
3301 avcodec_select="null_bsf"
3302 avdevice_deps="avformat avcodec avutil"
3303 avdevice_suggest="libm"
3304 avfilter_deps="avutil"
3305 avfilter_suggest="libm"
3306 avformat_deps="avcodec avutil"
3307 avformat_suggest="libm network zlib"
3308 avresample_deps="avutil"
3309 avresample_suggest="libm"
3310 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3311 postproc_deps="avutil gpl"
3312 postproc_suggest="libm"
3313 swresample_deps="avutil"
3314 swresample_suggest="libm libsoxr"
3315 swscale_deps="avutil"
3316 swscale_suggest="libm"
3317
3318 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3319 avfilter_extralibs="pthreads_extralibs"
3320 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3321
3322 # programs
3323 ffmpeg_deps="avcodec avfilter avformat swresample"
3324 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3325                null_filter
3326                trim_filter"
3327 ffmpeg_suggest="ole32 psapi shell32"
3328 ffplay_deps="avcodec avformat swscale swresample sdl2"
3329 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3330 ffplay_suggest="shell32"
3331 ffprobe_deps="avcodec avformat"
3332 ffprobe_suggest="shell32"
3333 ffserver_deps="avformat fork sarestart"
3334 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3335
3336 # documentation
3337 podpages_deps="perl"
3338 manpages_deps="perl pod2man"
3339 htmlpages_deps="perl"
3340 htmlpages_deps_any="makeinfo_html texi2html"
3341 txtpages_deps="perl makeinfo"
3342 doc_deps_any="manpages htmlpages podpages txtpages"
3343
3344 # default parameters
3345
3346 logfile="ffbuild/config.log"
3347
3348 # installation paths
3349 prefix_default="/usr/local"
3350 bindir_default='${prefix}/bin'
3351 datadir_default='${prefix}/share/ffmpeg'
3352 docdir_default='${prefix}/share/doc/ffmpeg'
3353 incdir_default='${prefix}/include'
3354 libdir_default='${prefix}/lib'
3355 mandir_default='${prefix}/share/man'
3356
3357 # toolchain
3358 ar_default="ar"
3359 cc_default="gcc"
3360 cxx_default="g++"
3361 host_cc_default="gcc"
3362 doxygen_default="doxygen"
3363 install="install"
3364 ln_s_default="ln -s -f"
3365 nm_default="nm -g"
3366 pkg_config_default=pkg-config
3367 ranlib_default="ranlib"
3368 strip_default="strip"
3369 version_script='--version-script'
3370 x86asmexe_default="nasm"
3371 windres_default="windres"
3372 nvcc_default="nvcc"
3373 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3374 striptype="direct"
3375
3376 # OS
3377 target_os_default=$(tolower $(uname -s))
3378 host_os=$target_os_default
3379
3380 # machine
3381 if test "$target_os_default" = aix; then
3382     arch_default=$(uname -p)
3383     strip_default="strip -X32_64"
3384 else
3385     arch_default=$(uname -m)
3386 fi
3387 cpu="generic"
3388 intrinsics="none"
3389
3390 # configurable options
3391 enable $PROGRAM_LIST
3392 enable $DOCUMENT_LIST
3393 enable $EXAMPLE_LIST
3394 enable $(filter_out avresample $LIBRARY_LIST)
3395 enable stripping
3396
3397 enable asm
3398 enable debug
3399 enable doc
3400 enable faan faandct faanidct
3401 enable optimizations
3402 enable runtime_cpudetect
3403 enable safe_bitstream_reader
3404 enable static
3405 enable swscale_alpha
3406 enable valgrind_backtrace
3407
3408 sws_max_filter_size_default=256
3409 set_default sws_max_filter_size
3410
3411 # internal components are enabled by default
3412 enable $EXTRALIBS_LIST
3413
3414 # Avoid external, non-system, libraries getting enabled by dependency resolution
3415 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3416
3417 # build settings
3418 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3419 LIBPREF="lib"
3420 LIBSUF=".a"
3421 FULLNAME='$(NAME)$(BUILDSUF)'
3422 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3423 SLIBPREF="lib"
3424 SLIBSUF=".so"
3425 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3426 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3427 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3428 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3429 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3430 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3431 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3432
3433 asflags_filter=echo
3434 cflags_filter=echo
3435 ldflags_filter=echo
3436
3437 AS_C='-c'
3438 AS_O='-o $@'
3439 CC_C='-c'
3440 CC_E='-E -o $@'
3441 CC_O='-o $@'
3442 CXX_C='-c'
3443 CXX_O='-o $@'
3444 OBJCC_C='-c'
3445 OBJCC_E='-E -o $@'
3446 OBJCC_O='-o $@'
3447 X86ASM_O='-o $@'
3448 LD_O='-o $@'
3449 LD_LIB='-l%'
3450 LD_PATH='-L'
3451 HOSTCC_C='-c'
3452 HOSTCC_E='-E -o $@'
3453 HOSTCC_O='-o $@'
3454 HOSTLD_O='-o $@'
3455 NVCC_C='-c'
3456 NVCC_O='-o $@'
3457
3458 host_extralibs='-lm'
3459 host_cflags_filter=echo
3460 host_ldflags_filter=echo
3461
3462 target_path='$(CURDIR)'
3463
3464 # since the object filename is not given with the -MM flag, the compiler
3465 # is only able to print the basename, and we must add the path ourselves
3466 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3467 DEPFLAGS='-MM'
3468
3469 mkdir -p ffbuild
3470
3471 # find source path
3472 if test -f configure; then
3473     source_path=.
3474 else
3475     source_path=$(cd $(dirname "$0"); pwd)
3476     case "$source_path" in
3477         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3478     esac
3479     test -e "$source_path/config.h" &&
3480         die "Out of tree builds are impossible with config.h in source dir."
3481 fi
3482
3483 for v in "$@"; do
3484     r=${v#*=}
3485     l=${v%"$r"}
3486     r=$(sh_quote "$r")
3487     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3488 done
3489
3490 find_things(){
3491     thing=$1
3492     pattern=$2
3493     file=$source_path/$3
3494     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3495 }
3496
3497 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3498 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3499 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3500 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3501 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3502 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3503 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3504 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3505 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3506
3507 find_things_extern(){
3508     thing=$1
3509     pattern=$2
3510     file=$source_path/$3
3511     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3512 }
3513
3514 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3515 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3516
3517 AVCODEC_COMPONENTS_LIST="
3518     $BSF_LIST
3519     $DECODER_LIST
3520     $ENCODER_LIST
3521     $HWACCEL_LIST
3522     $PARSER_LIST
3523 "
3524
3525 AVDEVICE_COMPONENTS_LIST="
3526     $INDEV_LIST
3527     $OUTDEV_LIST
3528 "
3529
3530 AVFILTER_COMPONENTS_LIST="
3531     $FILTER_LIST
3532 "
3533
3534 AVFORMAT_COMPONENTS_LIST="
3535     $DEMUXER_LIST
3536     $MUXER_LIST
3537     $PROTOCOL_LIST
3538 "
3539
3540 ALL_COMPONENTS="
3541     $AVCODEC_COMPONENTS_LIST
3542     $AVDEVICE_COMPONENTS_LIST
3543     $AVFILTER_COMPONENTS_LIST
3544     $AVFORMAT_COMPONENTS_LIST
3545 "
3546
3547 for n in $COMPONENT_LIST; do
3548     v=$(toupper ${n%s})_LIST
3549     eval enable \$$v
3550     eval ${n}_if_any="\$$v"
3551 done
3552
3553 enable $ARCH_EXT_LIST
3554
3555 die_unknown(){
3556     echo "Unknown option \"$1\"."
3557     echo "See $0 --help for available options."
3558     exit 1
3559 }
3560
3561 print_in_columns() {
3562     cols=$(expr $ncols / 24)
3563     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3564 }
3565
3566 show_list() {
3567     suffix=_$1
3568     shift
3569     echo $* | sed s/$suffix//g | print_in_columns
3570     exit 0
3571 }
3572
3573 rand_list(){
3574     IFS=', '
3575     set -- $*
3576     unset IFS
3577     for thing; do
3578         comp=${thing%:*}
3579         prob=${thing#$comp}
3580         prob=${prob#:}
3581         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3582         echo "prob ${prob:-0.5}"
3583         printf '%s\n' $comp
3584     done
3585 }
3586
3587 do_random(){
3588     action=$1
3589     shift
3590     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3591     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3592 }
3593
3594 for opt do
3595     optval="${opt#*=}"
3596     case "$opt" in
3597         --extra-ldflags=*)
3598             add_ldflags $optval
3599         ;;
3600         --extra-ldexeflags=*)
3601             add_ldexeflags $optval
3602         ;;
3603         --extra-ldsoflags=*)
3604             add_ldsoflags $optval
3605         ;;
3606         --extra-ldlibflags=*)
3607             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3608                  "removed in the future. Use --extra-ldsoflags instead."
3609             add_ldsoflags $optval
3610         ;;
3611         --extra-libs=*)
3612             add_extralibs $optval
3613         ;;
3614         --disable-devices)
3615             disable $INDEV_LIST $OUTDEV_LIST
3616         ;;
3617         --enable-debug=*)
3618             debuglevel="$optval"
3619         ;;
3620         --disable-programs)
3621             disable $PROGRAM_LIST
3622         ;;
3623         --disable-everything)
3624             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3625         ;;
3626         --disable-all)
3627             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3628             disable $LIBRARY_LIST $PROGRAM_LIST doc
3629             enable avutil
3630         ;;
3631         --enable-random|--disable-random)
3632             action=${opt%%-random}
3633             do_random ${action#--} $COMPONENT_LIST
3634         ;;
3635         --enable-random=*|--disable-random=*)
3636             action=${opt%%-random=*}
3637             do_random ${action#--} $optval
3638         ;;
3639         --enable-sdl)
3640             enable sdl2
3641         ;;
3642         --enable-*=*|--disable-*=*)
3643             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3644             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3645             eval list=\$$(toupper $thing)_LIST
3646             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3647             list=$(filter "$name" $list)
3648             [ "$list" = "" ] && warn "Option $opt did not match anything"
3649             $action $list
3650         ;;
3651         --enable-yasm|--disable-yasm)
3652             warn "The ${opt} option is only provided for compatibility and will be\n"\
3653                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3654             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3655         ;;
3656         --yasmexe=*)
3657             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3658                  "removed in the future. Use --x86asmexe instead."
3659             x86asmexe="$optval"
3660         ;;
3661         --enable-?*|--disable-?*)
3662             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3663             if is_in $option $COMPONENT_LIST; then
3664                 test $action = disable && action=unset
3665                 eval $action \$$(toupper ${option%s})_LIST
3666             elif is_in $option $CMDLINE_SELECT; then
3667                 $action $option
3668             else
3669                 die_unknown $opt
3670             fi
3671         ;;
3672         --list-*)
3673             NAME="${opt#--list-}"
3674             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3675             NAME=${NAME%s}
3676             eval show_list $NAME \$$(toupper $NAME)_LIST
3677         ;;
3678         --help|-h) show_help
3679         ;;
3680         --quiet|-q) quiet=yes
3681         ;;
3682         --fatal-warnings) enable fatal_warnings
3683         ;;
3684         --libfuzzer=*)
3685             libfuzzer_path="$optval"
3686         ;;
3687         *)
3688             optname="${opt%%=*}"
3689             optname="${optname#--}"
3690             optname=$(echo "$optname" | sed 's/-/_/g')
3691             if is_in $optname $CMDLINE_SET; then
3692                 eval $optname='$optval'
3693             elif is_in $optname $CMDLINE_APPEND; then
3694                 append $optname "$optval"
3695             else
3696                 die_unknown $opt
3697             fi
3698         ;;
3699     esac
3700 done
3701
3702 for e in $env; do
3703     eval "export $e"
3704 done
3705
3706 if disabled autodetect; then
3707
3708     # Unless iconv is explicitely disabled by the user, we still want to probe
3709     # for the iconv from the libc.
3710     disabled iconv || enable libc_iconv
3711
3712     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3713     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3714 fi
3715 # Mark specifically enabled, but normally autodetected libraries as requested.
3716 for lib in $AUTODETECT_LIBS; do
3717     enabled $lib && request $lib
3718 done
3719 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3720 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3721 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3722
3723 disabled logging && logfile=/dev/null
3724
3725 die_license_disabled() {
3726     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3727 }
3728
3729 die_license_disabled_gpl() {
3730     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3731 }
3732
3733 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3734 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3735
3736 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3737 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3738
3739 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3740
3741 enabled_all gnutls openssl &&
3742     die "GnuTLS and OpenSSL must not be enabled at the same time."
3743
3744 # Disable all the library-specific components if the library itself
3745 # is disabled, see AVCODEC_LIST and following _LIST variables.
3746
3747 disable_components(){
3748     disabled ${1} && disable $(
3749         eval components="\$$(toupper ${1})_COMPONENTS"
3750         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3751     )
3752 }
3753
3754 map 'disable_components $v' $LIBRARY_LIST
3755
3756 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3757 set >> $logfile
3758
3759 test -n "$valgrind" && toolchain="valgrind-memcheck"
3760
3761 enabled ossfuzz && {
3762     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3763     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3764 }
3765
3766 case "$toolchain" in
3767     *-asan)
3768         cc_default="${toolchain%-asan}"
3769         add_cflags  -fsanitize=address
3770         add_ldflags -fsanitize=address
3771     ;;
3772     *-msan)
3773         cc_default="${toolchain%-msan}"
3774         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3775         add_ldflags -fsanitize=memory
3776     ;;
3777     *-tsan)
3778         cc_default="${toolchain%-tsan}"
3779         add_cflags  -fsanitize=thread -fPIE
3780         add_ldflags -fsanitize=thread -pie
3781         case "$toolchain" in
3782             gcc-tsan)
3783                 add_cflags  -fPIC
3784                 add_ldflags -fPIC
3785                 ;;
3786         esac
3787     ;;
3788     *-usan)
3789         cc_default="${toolchain%-usan}"
3790         add_cflags  -fsanitize=undefined
3791         add_ldflags -fsanitize=undefined
3792     ;;
3793     valgrind-*)
3794         target_exec_default="valgrind"
3795         case "$toolchain" in
3796             valgrind-massif)
3797                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3798                 ;;
3799             valgrind-memcheck)
3800                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3801                 ;;
3802         esac
3803     ;;
3804     msvc)
3805         # Check whether the current MSVC version needs the C99 converter.
3806         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3807         # support enough of C99 to build ffmpeg. Default to the new
3808         # behaviour if the regexp was unable to match anything, since this
3809         # successfully parses the version number of existing supported
3810         # versions that require the converter (MSVC 2010 and 2012).
3811         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3812         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3813             cc_default="cl"
3814             cxx_default="cl"
3815         else
3816             cc_default="c99wrap cl"
3817             cxx_default="c99wrap cl"
3818         fi
3819         ld_default="$source_path/compat/windows/mslink"
3820         nm_default="dumpbin -symbols"
3821         ar_default="lib"
3822         case "$arch" in
3823         arm*)
3824             as_default="armasm"
3825             ;;
3826         esac
3827         target_os_default="win32"
3828         # Use a relative path for TMPDIR. This makes sure all the
3829         # ffconf temp files are written with a relative path, avoiding
3830         # issues with msys/win32 path conversion for MSVC parameters
3831         # such as -Fo<file> or -out:<file>.
3832         TMPDIR=.
3833     ;;
3834     icl)
3835         cc_default="icl"
3836         ld_default="xilink"
3837         nm_default="dumpbin -symbols"
3838         ar_default="xilib"
3839         target_os_default="win32"
3840         TMPDIR=.
3841     ;;
3842     gcov)
3843         add_cflags  -fprofile-arcs -ftest-coverage
3844         add_ldflags -fprofile-arcs -ftest-coverage
3845     ;;
3846     llvm-cov)
3847         add_cflags -fprofile-arcs -ftest-coverage
3848         add_ldflags --coverage
3849     ;;
3850     hardened)
3851         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3852         add_cflags   -fno-strict-overflow -fstack-protector-all
3853         add_ldflags  -Wl,-z,relro -Wl,-z,now
3854         add_cflags   -fPIE
3855         add_ldexeflags -fPIE -pie
3856     ;;
3857     ?*)
3858         die "Unknown toolchain $toolchain"
3859     ;;
3860 esac
3861
3862 test -n "$cross_prefix" && enable cross_compile
3863
3864 if enabled cross_compile; then
3865     test -n "$arch" && test -n "$target_os" ||
3866         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3867 fi
3868
3869 ar_default="${cross_prefix}${ar_default}"
3870 cc_default="${cross_prefix}${cc_default}"
3871 cxx_default="${cross_prefix}${cxx_default}"
3872 nm_default="${cross_prefix}${nm_default}"
3873 pkg_config_default="${cross_prefix}${pkg_config_default}"
3874 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3875     ranlib_default="${cross_prefix}${ranlib_default} -D"
3876 else
3877     ranlib_default="${cross_prefix}${ranlib_default}"
3878 fi
3879 strip_default="${cross_prefix}${strip_default}"
3880 windres_default="${cross_prefix}${windres_default}"
3881
3882 sysinclude_default="${sysroot}/usr/include"
3883
3884 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3885     target_exec target_os x86asmexe nvcc
3886 enabled cross_compile || host_cc_default=$cc
3887 set_default host_cc
3888
3889 pkg_config_fail_message=""
3890 if ! $pkg_config --version >/dev/null 2>&1; then
3891     warn "$pkg_config not found, library detection may fail."
3892     pkg_config=false
3893 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3894     pkg_config_fail_message="
3895 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3896 fi
3897
3898 if test $doxygen != $doxygen_default && \
3899   ! $doxygen --version >/dev/null 2>&1; then
3900     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3901 fi
3902
3903 exesuf() {
3904     case $1 in
3905         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3906     esac
3907 }
3908
3909 EXESUF=$(exesuf $target_os)
3910 HOSTEXESUF=$(exesuf $host_os)
3911
3912 # set temporary file name
3913 : ${TMPDIR:=$TEMPDIR}
3914 : ${TMPDIR:=$TMP}
3915 : ${TMPDIR:=/tmp}
3916
3917 if [ -n "$tempprefix" ] ; then
3918     mktemp(){
3919         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3920         echo "$tmpname"
3921         mkdir "$tmpname"
3922     }
3923 elif ! check_cmd mktemp -u XXXXXX; then
3924     # simple replacement for missing mktemp
3925     # NOT SAFE FOR GENERAL USE
3926     mktemp(){
3927         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3928         echo "$tmpname"
3929         mkdir "$tmpname"
3930     }
3931 fi
3932
3933 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3934     die "Unable to create temporary directory in $TMPDIR."
3935
3936 tmpfile(){
3937     tmp="${FFTMPDIR}/test"$2
3938     (set -C; exec > $tmp) 2> /dev/null ||
3939         die "Unable to create temporary file in $FFTMPDIR."
3940     eval $1=$tmp
3941 }
3942
3943 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3944 trap 'exit 2' INT
3945
3946 tmpfile TMPASM .asm
3947 tmpfile TMPC   .c
3948 tmpfile TMPCPP .cpp
3949 tmpfile TMPE   $EXESUF
3950 tmpfile TMPH   .h
3951 tmpfile TMPM   .m
3952 tmpfile TMPO   .o
3953 tmpfile TMPS   .S
3954 tmpfile TMPSH  .sh
3955 tmpfile TMPV   .ver
3956
3957 unset -f mktemp
3958
3959 chmod +x $TMPE
3960
3961 # make sure we can execute files in $TMPDIR
3962 cat > $TMPSH 2>> $logfile <<EOF
3963 #! /bin/sh
3964 EOF
3965 chmod +x $TMPSH >> $logfile 2>&1
3966 if ! $TMPSH >> $logfile 2>&1; then
3967     cat <<EOF
3968 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3969 variable to another directory and make sure that it is not mounted noexec.
3970 EOF
3971     die "Sanity test failed."
3972 fi
3973
3974 armasm_flags(){
3975     for flag; do
3976         case $flag in
3977             # Filter out MSVC cl.exe options from cflags that shouldn't
3978             # be passed to gas-preprocessor
3979             -M[TD]*)                                            ;;
3980             *)                  echo $flag                      ;;
3981         esac
3982    done
3983 }
3984
3985 cparser_flags(){
3986     for flag; do
3987         case $flag in
3988             -Wno-switch)             echo -Wno-switch-enum ;;
3989             -Wno-format-zero-length) ;;
3990             -Wdisabled-optimization) ;;
3991             -Wno-pointer-sign)       echo -Wno-other ;;
3992             *)                       echo $flag ;;
3993         esac
3994     done
3995 }
3996
3997 msvc_common_flags(){
3998     for flag; do
3999         case $flag in
4000             # In addition to specifying certain flags under the compiler
4001             # specific filters, they must be specified here as well or else the
4002             # generic catch all at the bottom will print the original flag.
4003             -Wall)                ;;
4004             -Wextra)              ;;
4005             -std=c99)             ;;
4006             # Common flags
4007             -fomit-frame-pointer) ;;
4008             -g)                   echo -Z7 ;;
4009             -fno-math-errno)      ;;
4010             -fno-common)          ;;
4011             -fno-signed-zeros)    ;;
4012             -fPIC)                ;;
4013             -mthumb)              ;;
4014             -march=*)             ;;
4015             -lz)                  echo zlib.lib ;;
4016             -lx264)               echo libx264.lib ;;
4017             -lstdc++)             ;;
4018             -l*)                  echo ${flag#-l}.lib ;;
4019             -LARGEADDRESSAWARE)   echo $flag ;;
4020             -L*)                  echo -libpath:${flag#-L} ;;
4021             *)                    echo $flag ;;
4022         esac
4023     done
4024 }
4025
4026 msvc_flags(){
4027     msvc_common_flags "$@"
4028     for flag; do
4029         case $flag in
4030             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4031                                        -wd4554 ;;
4032             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4033                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4034                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4035                                        -wd4307 \
4036                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4037         esac
4038     done
4039 }
4040
4041 icl_flags(){
4042     msvc_common_flags "$@"
4043     for flag; do
4044         case $flag in
4045             # Despite what Intel's documentation says -Wall, which is supported
4046             # on Windows, does enable remarks so disable them here.
4047             -Wall)                echo $flag -Qdiag-disable:remark ;;
4048             -std=c99)             echo -Qstd=c99 ;;
4049             -flto)                echo -ipo ;;
4050         esac
4051     done
4052 }
4053
4054 icc_flags(){
4055     for flag; do
4056         case $flag in
4057             -flto)                echo -ipo ;;
4058             *)                    echo $flag ;;
4059         esac
4060     done
4061 }
4062
4063 pgi_flags(){
4064     for flag; do
4065         case $flag in
4066             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4067             -fomit-frame-pointer) echo -Mnoframe ;;
4068             -g)                   echo -gopt ;;
4069             *)                    echo $flag ;;
4070         esac
4071     done
4072 }
4073
4074 suncc_flags(){
4075     for flag; do
4076         case $flag in
4077             -march=*|-mcpu=*)
4078                 case "${flag#*=}" in
4079                     native)                   echo -xtarget=native       ;;
4080                     v9|niagara)               echo -xarch=sparc          ;;
4081                     ultrasparc)               echo -xarch=sparcvis       ;;
4082                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4083                     i586|pentium)             echo -xchip=pentium        ;;
4084                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4085                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4086                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4087                     pentium4*)          echo -xtarget=pentium4           ;;
4088                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4089                     *-sse3)             echo -xarch=sse3                 ;;
4090                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4091                     bonnell)                   echo -xarch=ssse3         ;;
4092                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4093                     westmere)                  echo -xtarget=westmere    ;;
4094                     silvermont)                echo -xarch=sse4_2        ;;
4095                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4096                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4097                                                echo -xarch=avx           ;;
4098                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4099                     btver1)                    echo -xarch=amdsse4a      ;;
4100                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4101                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4102                     k8|opteron|athlon64|athlon-fx)
4103                                                echo -xarch=sse2a         ;;
4104                     athlon*)                   echo -xarch=pentium_proa  ;;
4105                 esac
4106                 ;;
4107             -std=c99)             echo -xc99              ;;
4108             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4109             -fPIC)                echo -KPIC -xcode=pic32 ;;
4110             -W*,*)                echo $flag              ;;
4111             -f*-*|-W*|-mimpure-text)                      ;;
4112             -shared)              echo -G                 ;;
4113             *)                    echo $flag              ;;
4114         esac
4115     done
4116 }
4117
4118 tms470_flags(){
4119     for flag; do
4120         case $flag in
4121             -march=*|-mcpu=*)
4122                 case "${flag#*=}" in
4123                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4124                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4125                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4126                     armv6*|arm11*)          echo -mv=6   ;;
4127                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4128                                             echo -mv=5e  ;;
4129                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4130                 esac
4131                 ;;
4132             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4133             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4134             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4135             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4136             -msoft-float)   echo --float_support=vfplib       ;;
4137             -O[0-3]|-mf=*)  echo $flag                        ;;
4138             -g)             echo -g -mn                       ;;
4139             -pds=*)         echo $flag                        ;;
4140             -D*|-I*)        echo $flag                        ;;
4141             --gcc|--abi=*)  echo $flag                        ;;
4142             -me)            echo $flag                        ;;
4143         esac
4144     done
4145 }
4146
4147 probe_cc(){
4148     pfx=$1
4149     _cc=$2
4150     first=$3
4151
4152     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4153     unset _ld_o _ldflags _ld_lib _ld_path
4154     unset _depflags _DEPCMD _DEPFLAGS
4155     _flags_filter=echo
4156
4157     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4158         true # no-op to avoid reading stdin in following checks
4159     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4160         _type=llvm_gcc
4161         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4162         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4163         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4164         _cflags_speed='-O3'
4165         _cflags_size='-Os'
4166     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4167         _type=gcc
4168         gcc_version=$($_cc --version | head -n1)
4169         gcc_basever=$($_cc -dumpversion)
4170         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4171         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4172         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4173         case $gcc_basever in
4174             2) ;;
4175             2.*) ;;
4176             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4177         esac
4178         if [ "$first" = true ]; then
4179             case $gcc_basever in
4180                 4.2*)
4181                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4182             esac
4183         fi
4184         _cflags_speed='-O3'
4185         _cflags_size='-Os'
4186     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4187         _type=icc
4188         _ident=$($_cc --version | head -n1)
4189         _depflags='-MMD'
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192         _cflags_noopt='-O1'
4193         _flags_filter=icc_flags
4194     elif $_cc -v 2>&1 | grep -q xlc; then
4195         _type=xlc
4196         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4197         _cflags_speed='-O5'
4198         _cflags_size='-O5 -qcompact'
4199     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4200         test -d "$sysroot" || die "No valid sysroot specified."
4201         _type=armcc
4202         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4203         armcc_conf="$PWD/armcc.conf"
4204         $_cc --arm_linux_configure                 \
4205              --arm_linux_config_file="$armcc_conf" \
4206              --configure_sysroot="$sysroot"        \
4207              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4208              die "Error creating armcc configuration file."
4209         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4210         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4211         as_default="${cross_prefix}gcc"
4212         _depflags='-MMD'
4213         _cflags_speed='-O3'
4214         _cflags_size='-Os'
4215     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4216         _type=tms470
4217         _ident=$($_cc -version | head -n1 | tr -s ' ')
4218         _flags='--gcc --abi=eabi -me'
4219         _cc_e='-ppl -fe=$@'
4220         _cc_o='-fe=$@'
4221         _depflags='-ppa -ppd=$(@:.o=.d)'
4222         _cflags_speed='-O3 -mf=5'
4223         _cflags_size='-O3 -mf=2'
4224         _flags_filter=tms470_flags
4225     elif $_cc -v 2>&1 | grep -q clang; then
4226         _type=clang
4227         _ident=$($_cc --version 2>/dev/null | head -n1)
4228         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4229         _cflags_speed='-O3'
4230         _cflags_size='-Oz'
4231     elif $_cc -V 2>&1 | grep -q Sun; then
4232         _type=suncc
4233         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4234         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4235         _DEPFLAGS='-xM1 -xc99'
4236         _ldflags='-std=c99'
4237         _cflags_speed='-O5'
4238         _cflags_size='-O5 -xspace'
4239         _flags_filter=suncc_flags
4240     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4241         _type=pathscale
4242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4244         _cflags_speed='-O2'
4245         _cflags_size='-Os'
4246         _flags_filter='filter_out -Wdisabled-optimization'
4247     elif $_cc -v 2>&1 | grep -q Open64; then
4248         _type=open64
4249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4251         _cflags_speed='-O2'
4252         _cflags_size='-Os'
4253         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4254     elif $_cc -V 2>&1 | grep -q Portland; then
4255         _type=pgi
4256         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4257         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4258         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4259         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4260         _cflags_noopt="-O"
4261         _flags_filter=pgi_flags
4262     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4263         _type=armasm
4264         _ident=$($_cc | head -n1)
4265         # 4509: "This form of conditional instruction is deprecated"
4266         _flags="-nologo -ignore 4509"
4267         _flags_filter=armasm_flags
4268     elif $_cc 2>&1 | grep -q Intel; then
4269         _type=icl
4270         _ident=$($_cc 2>&1 | head -n1)
4271         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4272         # Not only is O3 broken on 13.x+ but it is slower on all previous
4273         # versions (tested) as well.
4274         _cflags_speed="-O2"
4275         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4276         if $_cc 2>&1 | grep -q Linker; then
4277             _ld_o='-out:$@'
4278         else
4279             _ld_o='-Fe$@'
4280         fi
4281         _cc_o='-Fo$@'
4282         _cc_e='-P'
4283         _flags_filter=icl_flags
4284         _ld_lib='lib%.a'
4285         _ld_path='-libpath:'
4286         # -Qdiag-error to make icl error when seeing certain unknown arguments
4287         _flags='-nologo -Qdiag-error:4044,10157'
4288         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4289         # with MSVC which enables it by default.
4290         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4291         disable stripping
4292     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4293         # lld can emulate multiple different linkers; in ms link.exe mode,
4294         # the -? parameter gives the help output which contains an identifyable
4295         # string, while it gives an error in other modes.
4296         _type=lld-link
4297         # The link.exe mode doesn't have a switch for getting the version,
4298         # but we can force it back to gnu mode and get the version from there.
4299         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4300         _ld_o='-out:$@'
4301         _flags_filter=msvc_flags
4302         _ld_lib='lib%.a'
4303         _ld_path='-libpath:'
4304     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4305         _type=msvc
4306         _ident=$($_cc 2>&1 | head -n1)
4307         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4308         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4309         _cflags_speed="-O2"
4310         _cflags_size="-O1"
4311         _cflags_noopt="-O1"
4312         if $_cc -nologo- 2>&1 | grep -q Linker; then
4313             _ld_o='-out:$@'
4314         else
4315             _ld_o='-Fe$@'
4316         fi
4317         _cc_o='-Fo$@'
4318         _cc_e='-P -Fi$@'
4319         _flags_filter=msvc_flags
4320         _ld_lib='lib%.a'
4321         _ld_path='-libpath:'
4322         _flags='-nologo'
4323         disable stripping
4324     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4325         _type=cparser
4326         _ident=$($_cc --version | head -n1)
4327         _depflags='-MMD'
4328         _cflags_speed='-O4'
4329         _cflags_size='-O2'
4330         _flags_filter=cparser_flags
4331     fi
4332
4333     eval ${pfx}_type=\$_type
4334     eval ${pfx}_ident=\$_ident
4335 }
4336
4337 set_ccvars(){
4338     eval ${1}_C=\${_cc_c-\${${1}_C}}
4339     eval ${1}_E=\${_cc_e-\${${1}_E}}
4340     eval ${1}_O=\${_cc_o-\${${1}_O}}
4341
4342     if [ -n "$_depflags" ]; then
4343         eval ${1}_DEPFLAGS=\$_depflags
4344     else
4345         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4346         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4347         eval DEP${1}FLAGS=\$_flags
4348     fi
4349 }
4350
4351 probe_cc cc "$cc" "true"
4352 cflags_filter=$_flags_filter
4353 cflags_speed=$_cflags_speed
4354 cflags_size=$_cflags_size
4355 cflags_noopt=$_cflags_noopt
4356 add_cflags $_flags $_cflags
4357 cc_ldflags=$_ldflags
4358 set_ccvars CC
4359 set_ccvars CXX
4360
4361 probe_cc hostcc "$host_cc"
4362 host_cflags_filter=$_flags_filter
4363 host_cflags_speed=$_cflags_speed
4364 add_host_cflags  $_flags $_cflags
4365 set_ccvars HOSTCC
4366
4367 test -n "$cc_type" && enable $cc_type ||
4368     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4369
4370 : ${as_default:=$cc}
4371 : ${objcc_default:=$cc}
4372 : ${dep_cc_default:=$cc}
4373 : ${ld_default:=$cc}
4374 : ${host_ld_default:=$host_cc}
4375 set_default ar as objcc dep_cc ld ln_s host_ld windres
4376
4377 probe_cc as "$as"
4378 asflags_filter=$_flags_filter
4379 add_asflags $_flags $_cflags
4380 set_ccvars AS
4381
4382 probe_cc objcc "$objcc"
4383 objcflags_filter=$_flags_filter
4384 add_objcflags $_flags $_cflags
4385 set_ccvars OBJC
4386
4387 probe_cc ld "$ld"
4388 ldflags_filter=$_flags_filter
4389 add_ldflags $_flags $_ldflags
4390 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4391 LD_O=${_ld_o-$LD_O}
4392 LD_LIB=${_ld_lib-$LD_LIB}
4393 LD_PATH=${_ld_path-$LD_PATH}
4394
4395 probe_cc hostld "$host_ld"
4396 host_ldflags_filter=$_flags_filter
4397 add_host_ldflags $_flags $_ldflags
4398 HOSTLD_O=${_ld_o-$HOSTLD_O}
4399
4400 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4401     probe_cc depcc "$dep_cc"
4402     CCDEP=${_DEPCMD:-$DEPCMD}
4403     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4404     DEPCCFLAGS=$_flags
4405 fi
4406
4407 if $ar 2>&1 | grep -q Microsoft; then
4408     arflags="-nologo"
4409     ar_o='-out:$@'
4410 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4411     arflags="rq"
4412     ar_o='$@'
4413 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4414     arflags='-Xany -r -c'
4415     ar_o='$@'
4416 elif $ar 2>&1 | grep -q "\[D\] "; then
4417     arflags="rcD"
4418     ar_o='$@'
4419 else
4420     arflags="rc"
4421     ar_o='$@'
4422 fi
4423
4424 add_cflags $extra_cflags
4425 add_cxxflags $extra_cxxflags
4426 add_objcflags $extra_objcflags
4427 add_asflags $extra_cflags
4428
4429 if test -n "$sysroot"; then
4430     case "$cc_type" in
4431         gcc|llvm_gcc|clang)
4432             add_cppflags --sysroot="$sysroot"
4433             add_ldflags --sysroot="$sysroot"
4434         ;;
4435         tms470)
4436             add_cppflags -I"$sysinclude"
4437             add_ldflags  --sysroot="$sysroot"
4438         ;;
4439     esac
4440 fi
4441
4442 if test "$cpu" = host; then
4443     enabled cross_compile &&
4444         die "--cpu=host makes no sense when cross-compiling."
4445
4446     case "$cc_type" in
4447         gcc|llvm_gcc)
4448             check_native(){
4449                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4450                 sed -n "/cc1.*$1=/{
4451                             s/.*$1=\\([^ ]*\\).*/\\1/
4452                             p
4453                             q
4454                         }" $TMPE
4455             }
4456             cpu=$(check_native -march || check_native -mcpu)
4457         ;;
4458         clang)
4459             check_native(){
4460                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4461                 sed -n "/cc1.*-target-cpu /{
4462                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4463                             p
4464                             q
4465                         }" $TMPE
4466             }
4467             cpu=$(check_native -march)
4468         ;;
4469     esac
4470
4471     test "${cpu:-host}" = host &&
4472         die "--cpu=host not supported with compiler $cc"
4473 fi
4474
4475 # Deal with common $arch aliases
4476 case "$arch" in
4477     aarch64|arm64)
4478         arch="aarch64"
4479     ;;
4480     arm*|iPad*|iPhone*)
4481         arch="arm"
4482     ;;
4483     mips*|IP*)
4484         case "$arch" in
4485         *el)
4486             add_cppflags -EL
4487             add_ldflags -EL
4488         ;;
4489         *eb)
4490             add_cppflags -EB
4491             add_ldflags -EB
4492         ;;
4493         esac
4494         arch="mips"
4495     ;;
4496     parisc*|hppa*)
4497         arch="parisc"
4498     ;;
4499     "Power Macintosh"|ppc*|powerpc*)
4500         arch="ppc"
4501     ;;
4502     s390|s390x)
4503         arch="s390"
4504     ;;
4505     sh4|sh)
4506         arch="sh4"
4507     ;;
4508     sun4*|sparc*)
4509         arch="sparc"
4510     ;;
4511     tilegx|tile-gx)
4512         arch="tilegx"
4513     ;;
4514     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4515         arch="x86"
4516     ;;
4517 esac
4518
4519 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4520 enable $arch
4521
4522 # Add processor-specific flags
4523 if enabled aarch64; then
4524
4525     case $cpu in
4526         armv*)
4527             cpuflags="-march=$cpu"
4528         ;;
4529         *)
4530             cpuflags="-mcpu=$cpu"
4531         ;;
4532     esac
4533
4534 elif enabled alpha; then
4535
4536     cpuflags="-mcpu=$cpu"
4537
4538 elif enabled arm; then
4539
4540     check_arm_arch() {
4541         check_cpp_condition stddef.h \
4542             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4543             $cpuflags
4544     }
4545
4546     probe_arm_arch() {
4547         if   check_arm_arch 4;        then echo armv4
4548         elif check_arm_arch 4T;       then echo armv4t
4549         elif check_arm_arch 5;        then echo armv5
4550         elif check_arm_arch 5E;       then echo armv5e
4551         elif check_arm_arch 5T;       then echo armv5t
4552         elif check_arm_arch 5TE;      then echo armv5te
4553         elif check_arm_arch 5TEJ;     then echo armv5te
4554         elif check_arm_arch 6;        then echo armv6
4555         elif check_arm_arch 6J;       then echo armv6j
4556         elif check_arm_arch 6K;       then echo armv6k
4557         elif check_arm_arch 6Z;       then echo armv6z
4558         elif check_arm_arch 6ZK;      then echo armv6zk
4559         elif check_arm_arch 6T2;      then echo armv6t2
4560         elif check_arm_arch 7;        then echo armv7
4561         elif check_arm_arch 7A  7_A;  then echo armv7-a
4562         elif check_arm_arch 7S;       then echo armv7-a
4563         elif check_arm_arch 7R  7_R;  then echo armv7-r
4564         elif check_arm_arch 7M  7_M;  then echo armv7-m
4565         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4566         elif check_arm_arch 8A  8_A;  then echo armv8-a
4567         fi
4568     }
4569
4570     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4571
4572     case $cpu in
4573         armv*)
4574             cpuflags="-march=$cpu"
4575             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4576         ;;
4577         *)
4578             cpuflags="-mcpu=$cpu"
4579             case $cpu in
4580                 cortex-a*)                               subarch=armv7a  ;;
4581                 cortex-r*)                               subarch=armv7r  ;;
4582                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4583                 arm11*)                                  subarch=armv6   ;;
4584                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4585                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4586                 *)                             subarch=$(probe_arm_arch) ;;
4587             esac
4588         ;;
4589     esac
4590
4591     case "$subarch" in
4592         armv5t*)    enable fast_clz                ;;
4593         armv[6-8]*)
4594             enable fast_clz
4595             disabled fast_unaligned || enable fast_unaligned
4596             ;;
4597     esac
4598
4599 elif enabled avr32; then
4600
4601     case $cpu in
4602         ap7[02]0[0-2])
4603             subarch="avr32_ap"
4604             cpuflags="-mpart=$cpu"
4605         ;;
4606         ap)
4607             subarch="avr32_ap"
4608             cpuflags="-march=$cpu"
4609         ;;
4610         uc3[ab]*)
4611             subarch="avr32_uc"
4612             cpuflags="-mcpu=$cpu"
4613         ;;
4614         uc)
4615             subarch="avr32_uc"
4616             cpuflags="-march=$cpu"
4617         ;;
4618     esac
4619
4620 elif enabled bfin; then
4621
4622     cpuflags="-mcpu=$cpu"
4623
4624 elif enabled mips; then
4625
4626     cpuflags="-march=$cpu"
4627
4628     if [ "$cpu" != "generic" ]; then
4629         disable mips32r2
4630         disable mips32r5
4631         disable mips64r2
4632         disable mips32r6
4633         disable mips64r6
4634         disable loongson2
4635         disable loongson3
4636
4637         case $cpu in
4638             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4639                 enable mips32r2
4640                 disable msa
4641             ;;
4642             p5600|i6400|p6600)
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             loongson*)
4647                 enable loongson2
4648                 enable loongson3
4649                 enable local_aligned
4650                 enable simd_align_16
4651                 enable fast_64bit
4652                 enable fast_clz
4653                 enable fast_cmov
4654                 enable fast_unaligned
4655                 disable aligned_stack
4656                 disable mipsfpu
4657                 disable mipsdsp
4658                 disable mipsdspr2
4659                 case $cpu in
4660                     loongson3*)
4661                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4662                     ;;
4663                     loongson2e)
4664                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4665                     ;;
4666                     loongson2f)
4667                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4668                     ;;
4669                 esac
4670             ;;
4671             *)
4672                 # Unknown CPU. Disable everything.
4673                 warn "unknown CPU. Disabling all MIPS optimizations."
4674                 disable mipsfpu
4675                 disable mipsdsp
4676                 disable mipsdspr2
4677                 disable msa
4678                 disable mmi
4679             ;;
4680         esac
4681
4682         case $cpu in
4683             24kc)
4684                 disable mipsfpu
4685                 disable mipsdsp
4686                 disable mipsdspr2
4687             ;;
4688             24kf*)
4689                 disable mipsdsp
4690                 disable mipsdspr2
4691             ;;
4692             24kec|34kc|1004kc)
4693                 disable mipsfpu
4694                 disable mipsdspr2
4695             ;;
4696             24kef*|34kf*|1004kf*)
4697                 disable mipsdspr2
4698             ;;
4699             74kc)
4700                 disable mipsfpu
4701             ;;
4702             p5600)
4703                 enable mips32r5
4704                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4705             ;;
4706             i6400)
4707                 enable mips64r6
4708                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4709             ;;
4710             p6600)
4711                 enable mips64r6
4712                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4713             ;;
4714         esac
4715     else
4716         # We do not disable anything. Is up to the user to disable the unwanted features.
4717         warn 'generic cpu selected'
4718     fi
4719
4720 elif enabled ppc; then
4721
4722     disable ldbrx
4723
4724     case $(tolower $cpu) in
4725         601|ppc601|powerpc601)
4726             cpuflags="-mcpu=601"
4727             disable altivec
4728         ;;
4729         603*|ppc603*|powerpc603*)
4730             cpuflags="-mcpu=603"
4731             disable altivec
4732         ;;
4733         604*|ppc604*|powerpc604*)
4734             cpuflags="-mcpu=604"
4735             disable altivec
4736         ;;
4737         g3|75*|ppc75*|powerpc75*)
4738             cpuflags="-mcpu=750"
4739             disable altivec
4740         ;;
4741         g4|745*|ppc745*|powerpc745*)
4742             cpuflags="-mcpu=7450"
4743             disable vsx
4744         ;;
4745         74*|ppc74*|powerpc74*)
4746             cpuflags="-mcpu=7400"
4747             disable vsx
4748         ;;
4749         g5|970|ppc970|powerpc970)
4750             cpuflags="-mcpu=970"
4751             disable vsx
4752         ;;
4753         power[3-6]*)
4754             cpuflags="-mcpu=$cpu"
4755             disable vsx
4756         ;;
4757         power[7-8]*)
4758             cpuflags="-mcpu=$cpu"
4759         ;;
4760         cell)
4761             cpuflags="-mcpu=cell"
4762             enable ldbrx
4763             disable vsx
4764         ;;
4765         e500mc)
4766             cpuflags="-mcpu=e500mc"
4767             disable altivec
4768         ;;
4769         e500v2)
4770             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4771             disable altivec
4772             disable dcbzl
4773         ;;
4774         e500)
4775             cpuflags="-mcpu=8540 -mhard-float"
4776             disable altivec
4777             disable dcbzl
4778         ;;
4779     esac
4780
4781 elif enabled sparc; then
4782
4783     case $cpu in
4784         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4785             cpuflags="-mcpu=$cpu"
4786         ;;
4787         ultrasparc*|niagara[234])
4788             cpuflags="-mcpu=$cpu"
4789         ;;
4790     esac
4791
4792 elif enabled x86; then
4793
4794     case $cpu in
4795         i[345]86|pentium)
4796             cpuflags="-march=$cpu"
4797             disable i686
4798             disable mmx
4799         ;;
4800         # targets that do NOT support nopl and conditional mov (cmov)
4801         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4802             cpuflags="-march=$cpu"
4803             disable i686
4804         ;;
4805         # targets that do support nopl and conditional mov (cmov)
4806         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4807         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4808         |amdfam10|barcelona|b[dt]ver*|znver*)
4809             cpuflags="-march=$cpu"
4810             enable i686
4811             enable fast_cmov
4812         ;;
4813         # targets that do support conditional mov but on which it's slow
4814         pentium4|pentium4m|prescott|nocona)
4815             cpuflags="-march=$cpu"
4816             enable i686
4817             disable fast_cmov
4818         ;;
4819     esac
4820
4821 fi
4822
4823 if [ "$cpu" != generic ]; then
4824     add_cflags  $cpuflags
4825     add_asflags $cpuflags
4826     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4827 fi
4828
4829 # compiler sanity check
4830 check_exec <<EOF
4831 int main(void){ return 0; }
4832 EOF
4833 if test "$?" != 0; then
4834     echo "$cc is unable to create an executable file."
4835     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4836         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4837         echo "Only do this if you know what cross compiling means."
4838     fi
4839     die "C compiler test failed."
4840 fi
4841
4842 add_cppflags -D_ISOC99_SOURCE
4843 add_cxxflags -D__STDC_CONSTANT_MACROS
4844 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4845
4846 # some compilers silently accept -std=c11, so we also need to check that the
4847 # version macro is defined properly
4848 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4849     add_cflags -std=c11 ||
4850     check_cflags -std=c99
4851
4852 check_cppflags -D_FILE_OFFSET_BITS=64
4853 check_cppflags -D_LARGEFILE_SOURCE
4854
4855 add_host_cppflags -D_ISOC99_SOURCE
4856 check_host_cflags -std=c99
4857 check_host_cflags -Wall
4858 check_host_cflags $host_cflags_speed
4859
4860 check_64bit(){
4861     arch32=$1
4862     arch64=$2
4863     expr=$3
4864     check_code cc "" "int test[2*($expr) - 1]" &&
4865         subarch=$arch64 || subarch=$arch32
4866 }
4867
4868 case "$arch" in
4869     aarch64|alpha|ia64)
4870         spic=$shared
4871     ;;
4872     mips)
4873         check_64bit mips mips64 '_MIPS_SIM > 1'
4874         spic=$shared
4875     ;;
4876     parisc)
4877         check_64bit parisc parisc64 'sizeof(void *) > 4'
4878         spic=$shared
4879     ;;
4880     ppc)
4881         check_64bit ppc ppc64 'sizeof(void *) > 4'
4882         spic=$shared
4883     ;;
4884     s390)