Merge commit 'b9129ec4668c511e0a79e25c6f25d748cee172c9'
[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 ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
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" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_sanitized "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_sanitized "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_sanitized "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_sanitized "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     libxcb
1538     libxcb_shm
1539     libxcb_shape
1540     libxcb_xfixes
1541     lzma
1542     schannel
1543     sdl2
1544     securetransport
1545     sndio
1546     xlib
1547     zlib
1548 "
1549
1550 EXTERNAL_LIBRARY_GPL_LIST="
1551     avisynth
1552     frei0r
1553     libcdio
1554     librubberband
1555     libvidstab
1556     libx264
1557     libx265
1558     libxavs
1559     libxvid
1560 "
1561
1562 EXTERNAL_LIBRARY_NONFREE_LIST="
1563     decklink
1564     libndi_newtek
1565     libfdk_aac
1566     openssl
1567 "
1568
1569 EXTERNAL_LIBRARY_VERSION3_LIST="
1570     gmp
1571     libopencore_amrnb
1572     libopencore_amrwb
1573     libvmaf
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libjack
1608     libkvazaar
1609     libmodplug
1610     libmp3lame
1611     libmysofa
1612     libopencv
1613     libopenh264
1614     libopenjpeg
1615     libopenmpt
1616     libopus
1617     libpulse
1618     librsvg
1619     librtmp
1620     libshine
1621     libsmbclient
1622     libsnappy
1623     libsoxr
1624     libspeex
1625     libssh
1626     libtesseract
1627     libtheora
1628     libtwolame
1629     libv4l2
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     arpa_inet_h
1914     asm_types_h
1915     cdio_paranoia_h
1916     cdio_paranoia_paranoia_h
1917     cuda_h
1918     d3d11_h
1919     dispatch_dispatch_h
1920     dev_bktr_ioctl_bt848_h
1921     dev_bktr_ioctl_meteor_h
1922     dev_ic_bt8xx_h
1923     dev_video_bktr_ioctl_bt848_h
1924     dev_video_meteor_ioctl_meteor_h
1925     direct_h
1926     dirent_h
1927     dlfcn_h
1928     dxgidebug_h
1929     dxva_h
1930     ES2_gl_h
1931     gsm_h
1932     io_h
1933     mach_mach_time_h
1934     machine_ioctl_bt848_h
1935     machine_ioctl_meteor_h
1936     malloc_h
1937     opencv2_core_core_c_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     kbhit
2026     LoadLibrary
2027     localtime_r
2028     lstat
2029     lzo1x_999_compress
2030     mach_absolute_time
2031     MapViewOfFile
2032     memalign
2033     mkstemp
2034     mmap
2035     mprotect
2036     nanosleep
2037     PeekNamedPipe
2038     posix_memalign
2039     pthread_cancel
2040     sched_getaffinity
2041     SetConsoleTextAttribute
2042     SetConsoleCtrlHandler
2043     setmode
2044     setrlimit
2045     Sleep
2046     strerror_r
2047     sysconf
2048     sysctl
2049     usleep
2050     UTGetOSTypeFromString
2051     VirtualAlloc
2052     wglGetProcAddress
2053 "
2054
2055 TOOLCHAIN_FEATURES="
2056     as_arch_directive
2057     as_fpu_directive
2058     as_func
2059     as_object_arch
2060     asm_mod_q
2061     attribute_may_alias
2062     attribute_packed
2063     blocks_extension
2064     ebp_available
2065     ebx_available
2066     gnu_as
2067     gnu_windres
2068     ibm_asm
2069     inline_asm_direct_symbol_refs
2070     inline_asm_labels
2071     inline_asm_nonlocal_labels
2072     pragma_deprecated
2073     rsync_contimeout
2074     symver_asm_label
2075     symver_gnu_asm
2076     vfp_args
2077     xform_asm
2078     xmm_clobbers
2079 "
2080
2081 TYPES_LIST="
2082     CONDITION_VARIABLE_Ptr
2083     kCMVideoCodecType_HEVC
2084     socklen_t
2085     struct_addrinfo
2086     struct_group_source_req
2087     struct_ip_mreq_source
2088     struct_ipv6_mreq
2089     struct_msghdr_msg_flags
2090     struct_pollfd
2091     struct_rusage_ru_maxrss
2092     struct_sctp_event_subscribe
2093     struct_sockaddr_in6
2094     struct_sockaddr_sa_len
2095     struct_sockaddr_storage
2096     struct_stat_st_mtim_tv_nsec
2097     struct_v4l2_frmivalenum_discrete
2098 "
2099
2100 HAVE_LIST="
2101     $ARCH_EXT_LIST
2102     $(add_suffix _external $ARCH_EXT_LIST)
2103     $(add_suffix _inline   $ARCH_EXT_LIST)
2104     $ARCH_FEATURES
2105     $ATOMICS_LIST
2106     $BUILTIN_LIST
2107     $COMPLEX_FUNCS
2108     $HAVE_LIST_CMDLINE
2109     $HAVE_LIST_PUB
2110     $HEADERS_LIST
2111     $INTRINSICS_LIST
2112     $MATH_FUNCS
2113     $SYSTEM_FUNCS
2114     $THREADS_LIST
2115     $TOOLCHAIN_FEATURES
2116     $TYPES_LIST
2117     atomics_native
2118     dos_paths
2119     libc_msvcrt
2120     makeinfo
2121     makeinfo_html
2122     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2123     perl
2124     pod2man
2125     section_data_rel_ro
2126     texi2html
2127     threads
2128     uwp
2129     vaapi_drm
2130     vaapi_x11
2131     vdpau_x11
2132     winrt
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     rangecoder
2200     riffdec
2201     riffenc
2202     rtpdec
2203     rtpenc_chain
2204     rv34dsp
2205     sinewin
2206     snappy
2207     srtp
2208     startcode
2209     texturedsp
2210     texturedspenc
2211     tpeldsp
2212     vaapi_1
2213     vaapi_encode
2214     vc1dsp
2215     videodsp
2216     vp3dsp
2217     vp56dsp
2218     vp8dsp
2219     wma_freqs
2220     wmv2dsp
2221 "
2222
2223 CMDLINE_SELECT="
2224     $ARCH_EXT_LIST
2225     $CONFIG_LIST
2226     $HAVE_LIST_CMDLINE
2227     $THREADS_LIST
2228     asm
2229     cross_compile
2230     debug
2231     extra_warnings
2232     logging
2233     lto
2234     optimizations
2235     rpath
2236     stripping
2237 "
2238
2239 PATHS_LIST="
2240     bindir
2241     datadir
2242     docdir
2243     incdir
2244     libdir
2245     mandir
2246     pkgconfigdir
2247     prefix
2248     shlibdir
2249     install_name_dir
2250 "
2251
2252 CMDLINE_SET="
2253     $PATHS_LIST
2254     ar
2255     arch
2256     as
2257     assert_level
2258     build_suffix
2259     cc
2260     objcc
2261     cpu
2262     cross_prefix
2263     custom_allocator
2264     cxx
2265     dep_cc
2266     doxygen
2267     env
2268     extra_version
2269     gas
2270     host_cc
2271     host_cflags
2272     host_extralibs
2273     host_ld
2274     host_ldflags
2275     host_os
2276     ignore_tests
2277     install
2278     ld
2279     ln_s
2280     logfile
2281     malloc_prefix
2282     nm
2283     optflags
2284     nvccflags
2285     pkg_config
2286     pkg_config_flags
2287     progs_suffix
2288     random_seed
2289     ranlib
2290     samples
2291     strip
2292     sws_max_filter_size
2293     sysinclude
2294     sysroot
2295     target_exec
2296     target_os
2297     target_path
2298     target_samples
2299     tempprefix
2300     toolchain
2301     valgrind
2302     x86asmexe
2303 "
2304
2305 CMDLINE_APPEND="
2306     extra_cflags
2307     extra_cxxflags
2308     extra_objcflags
2309     host_cppflags
2310 "
2311
2312 # code dependency declarations
2313
2314 # architecture extensions
2315
2316 armv5te_deps="arm"
2317 armv6_deps="arm"
2318 armv6t2_deps="arm"
2319 armv8_deps="aarch64"
2320 neon_deps_any="aarch64 arm"
2321 intrinsics_neon_deps="neon"
2322 vfp_deps_any="aarch64 arm"
2323 vfpv3_deps="vfp"
2324 setend_deps="arm"
2325
2326 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2327
2328 altivec_deps="ppc"
2329 dcbzl_deps="ppc"
2330 ldbrx_deps="ppc"
2331 ppc4xx_deps="ppc"
2332 vsx_deps="altivec"
2333 power8_deps="vsx"
2334
2335 loongson2_deps="mips"
2336 loongson3_deps="mips"
2337 mips32r2_deps="mips"
2338 mips32r5_deps="mips"
2339 mips32r6_deps="mips"
2340 mips64r2_deps="mips"
2341 mips64r6_deps="mips"
2342 mipsfpu_deps="mips"
2343 mipsdsp_deps="mips"
2344 mipsdspr2_deps="mips"
2345 mmi_deps="mips"
2346 msa_deps="mipsfpu"
2347
2348 cpunop_deps="i686"
2349 x86_64_select="i686"
2350 x86_64_suggest="fast_cmov"
2351
2352 amd3dnow_deps="mmx"
2353 amd3dnowext_deps="amd3dnow"
2354 i686_deps="x86"
2355 mmx_deps="x86"
2356 mmxext_deps="mmx"
2357 sse_deps="mmxext"
2358 sse2_deps="sse"
2359 sse3_deps="sse2"
2360 ssse3_deps="sse3"
2361 sse4_deps="ssse3"
2362 sse42_deps="sse4"
2363 aesni_deps="sse42"
2364 avx_deps="sse42"
2365 xop_deps="avx"
2366 fma3_deps="avx"
2367 fma4_deps="avx"
2368 avx2_deps="avx"
2369
2370 mmx_external_deps="x86asm"
2371 mmx_inline_deps="inline_asm x86"
2372 mmx_suggest="mmx_external mmx_inline"
2373
2374 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2375     eval dep=\$${ext}_deps
2376     eval ${ext}_external_deps='"${dep}_external"'
2377     eval ${ext}_inline_deps='"${dep}_inline"'
2378     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2379 done
2380
2381 aligned_stack_if_any="aarch64 ppc x86"
2382 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2383 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2384 fast_unaligned_if_any="aarch64 ppc x86"
2385 simd_align_16_if_any="altivec neon sse"
2386 simd_align_32_if_any="avx"
2387
2388 # system capabilities
2389 symver_if_any="symver_asm_label symver_gnu_asm"
2390 valgrind_backtrace_conflict="optimizations"
2391 valgrind_backtrace_deps="valgrind_valgrind_h"
2392
2393 # threading support
2394 atomics_gcc_if="sync_val_compare_and_swap"
2395 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2396 atomics_win32_if="MemoryBarrier"
2397 atomics_native_if_any="$ATOMICS_LIST"
2398 w32threads_deps="atomics_native"
2399 threads_if_any="$THREADS_LIST"
2400
2401 # subsystems
2402 cbs_h264_select="cbs golomb"
2403 cbs_h265_select="cbs golomb"
2404 cbs_mpeg2_select="cbs"
2405 dct_select="rdft"
2406 dirac_parse_select="golomb"
2407 error_resilience_select="me_cmp"
2408 faandct_deps="faan"
2409 faandct_select="fdctdsp"
2410 faanidct_deps="faan"
2411 faanidct_select="idctdsp"
2412 h264dsp_select="startcode"
2413 hevcparse_select="golomb"
2414 frame_thread_encoder_deps="encoders threads"
2415 intrax8_select="blockdsp idctdsp"
2416 mdct_select="fft"
2417 mdct15_select="fft"
2418 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2419 mpeg_er_select="error_resilience"
2420 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2421 mpegaudiodsp_select="dct"
2422 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2423 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2424 vc1dsp_select="h264chroma qpeldsp startcode"
2425 rdft_select="fft"
2426
2427 # decoders / encoders
2428 aac_decoder_select="adts_header mdct15 mdct sinewin"
2429 aac_fixed_decoder_select="mdct sinewin"
2430 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2431 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2432 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2433 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2434 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 adpcm_g722_decoder_select="g722dsp"
2437 adpcm_g722_encoder_select="g722dsp"
2438 aic_decoder_select="golomb idctdsp"
2439 alac_encoder_select="lpc"
2440 als_decoder_select="bswapdsp"
2441 amrnb_decoder_select="lsp"
2442 amrwb_decoder_select="lsp"
2443 amv_decoder_select="sp5x_decoder exif"
2444 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2445 ape_decoder_select="bswapdsp llauddsp"
2446 apng_decoder_select="zlib"
2447 apng_encoder_select="llvidencdsp zlib"
2448 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 atrac1_decoder_select="mdct sinewin"
2453 atrac3_decoder_select="mdct"
2454 atrac3p_decoder_select="mdct sinewin"
2455 avrn_decoder_select="exif jpegtables"
2456 bink_decoder_select="blockdsp hpeldsp"
2457 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2458 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2459 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2460 clearvideo_decoder_select="idctdsp"
2461 cllc_decoder_select="bswapdsp"
2462 comfortnoise_encoder_select="lpc"
2463 cook_decoder_select="audiodsp mdct sinewin"
2464 cscd_decoder_select="lzo"
2465 cscd_decoder_suggest="zlib"
2466 dca_decoder_select="mdct"
2467 dds_decoder_select="texturedsp"
2468 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2469 dnxhd_decoder_select="blockdsp idctdsp"
2470 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2471 dolby_e_decoder_select="mdct"
2472 dvvideo_decoder_select="dvprofile idctdsp"
2473 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2474 dxa_decoder_select="zlib"
2475 dxv_decoder_select="lzf texturedsp"
2476 eac3_decoder_select="ac3_decoder"
2477 eac3_encoder_select="ac3_encoder"
2478 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2479 eatgq_decoder_select="aandcttables"
2480 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2481 exr_decoder_select="zlib"
2482 ffv1_decoder_select="rangecoder"
2483 ffv1_encoder_select="rangecoder"
2484 ffvhuff_decoder_select="huffyuv_decoder"
2485 ffvhuff_encoder_select="huffyuv_encoder"
2486 fic_decoder_select="golomb"
2487 flac_decoder_select="flacdsp"
2488 flac_encoder_select="bswapdsp flacdsp lpc"
2489 flashsv2_decoder_select="zlib"
2490 flashsv2_encoder_select="zlib"
2491 flashsv_decoder_select="zlib"
2492 flashsv_encoder_select="zlib"
2493 flv_decoder_select="h263_decoder"
2494 flv_encoder_select="h263_encoder"
2495 fourxm_decoder_select="blockdsp bswapdsp"
2496 fraps_decoder_select="bswapdsp huffman"
2497 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2498 g729_decoder_select="audiodsp"
2499 h261_decoder_select="mpegvideo"
2500 h261_encoder_select="aandcttables mpegvideoenc"
2501 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2502 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2503 h263i_decoder_select="h263_decoder"
2504 h263p_decoder_select="h263_decoder"
2505 h263p_encoder_select="h263_encoder"
2506 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2507 h264_decoder_suggest="error_resilience"
2508 hap_decoder_select="snappy texturedsp"
2509 hap_encoder_deps="libsnappy"
2510 hap_encoder_select="texturedspenc"
2511 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2512 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2513 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2514 iac_decoder_select="imc_decoder"
2515 imc_decoder_select="bswapdsp fft mdct sinewin"
2516 indeo3_decoder_select="hpeldsp"
2517 indeo4_decoder_select="ividsp"
2518 indeo5_decoder_select="ividsp"
2519 interplay_video_decoder_select="hpeldsp"
2520 jpegls_decoder_select="mjpeg_decoder"
2521 jv_decoder_select="blockdsp"
2522 lagarith_decoder_select="llviddsp"
2523 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2524 magicyuv_decoder_select="llviddsp"
2525 magicyuv_encoder_select="llvidencdsp"
2526 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2527 metasound_decoder_select="lsp mdct sinewin"
2528 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2529 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2530 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2531 mjpegb_decoder_select="mjpeg_decoder"
2532 mlp_decoder_select="mlp_parser"
2533 mlp_encoder_select="lpc"
2534 motionpixels_decoder_select="bswapdsp"
2535 mp1_decoder_select="mpegaudio"
2536 mp1float_decoder_select="mpegaudio"
2537 mp2_decoder_select="mpegaudio"
2538 mp2float_decoder_select="mpegaudio"
2539 mp3_decoder_select="mpegaudio"
2540 mp3adu_decoder_select="mpegaudio"
2541 mp3adufloat_decoder_select="mpegaudio"
2542 mp3float_decoder_select="mpegaudio"
2543 mp3on4_decoder_select="mpegaudio"
2544 mp3on4float_decoder_select="mpegaudio"
2545 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2546 mpc8_decoder_select="mpegaudiodsp"
2547 mpegvideo_decoder_select="mpegvideo"
2548 mpeg1video_decoder_select="mpegvideo"
2549 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg2video_decoder_select="mpegvideo"
2551 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2553 mpeg4_encoder_select="h263_encoder"
2554 msa1_decoder_select="mss34dsp"
2555 mscc_decoder_select="zlib"
2556 msmpeg4v1_decoder_select="h263_decoder"
2557 msmpeg4v2_decoder_select="h263_decoder"
2558 msmpeg4v2_encoder_select="h263_encoder"
2559 msmpeg4v3_decoder_select="h263_decoder"
2560 msmpeg4v3_encoder_select="h263_encoder"
2561 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2562 mts2_decoder_select="mss34dsp"
2563 mxpeg_decoder_select="mjpeg_decoder"
2564 nellymoser_decoder_select="mdct sinewin"
2565 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2566 nuv_decoder_select="idctdsp lzo"
2567 on2avc_decoder_select="mdct"
2568 opus_decoder_deps="swresample"
2569 opus_decoder_select="mdct15"
2570 opus_encoder_select="audio_frame_queue mdct15"
2571 png_decoder_select="zlib"
2572 png_encoder_select="llvidencdsp zlib"
2573 prores_decoder_select="blockdsp idctdsp"
2574 prores_encoder_select="fdctdsp"
2575 qcelp_decoder_select="lsp"
2576 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2577 ra_144_decoder_select="audiodsp"
2578 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2579 ralf_decoder_select="golomb"
2580 rawvideo_decoder_select="bswapdsp"
2581 rscc_decoder_select="zlib"
2582 rtjpeg_decoder_select="me_cmp"
2583 rv10_decoder_select="h263_decoder"
2584 rv10_encoder_select="h263_encoder"
2585 rv20_decoder_select="h263_decoder"
2586 rv20_encoder_select="h263_encoder"
2587 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 screenpresso_decoder_select="zlib"
2590 shorten_decoder_select="bswapdsp"
2591 sipr_decoder_select="lsp"
2592 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2593 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2594 sonic_decoder_select="golomb rangecoder"
2595 sonic_encoder_select="golomb rangecoder"
2596 sonic_ls_encoder_select="golomb rangecoder"
2597 sp5x_decoder_select="mjpeg_decoder"
2598 srgc_decoder_select="zlib"
2599 svq1_decoder_select="hpeldsp"
2600 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2601 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2602 svq3_decoder_suggest="zlib"
2603 tak_decoder_select="audiodsp"
2604 tdsc_decoder_select="zlib mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_select="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_select="zlib"
2648 zlib_decoder_select="zlib"
2649 zlib_encoder_select="zlib"
2650 zmbv_decoder_select="zlib"
2651 zmbv_encoder_select="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_nvdec_hwaccel_deps="cuda nvdec"
2678 h264_nvdec_hwaccel_select="h264_decoder"
2679 h264_qsv_hwaccel_deps="libmfx"
2680 h264_vaapi_hwaccel_deps="vaapi"
2681 h264_vaapi_hwaccel_select="h264_decoder"
2682 h264_vdpau_hwaccel_deps="vdpau"
2683 h264_vdpau_hwaccel_select="h264_decoder"
2684 h264_videotoolbox_hwaccel_deps="videotoolbox"
2685 h264_videotoolbox_hwaccel_select="h264_decoder"
2686 hevc_cuvid_hwaccel_deps="cuda cuvid"
2687 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2688 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va_hwaccel_select="hevc_decoder"
2690 hevc_mediacodec_hwaccel_deps="mediacodec"
2691 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2693 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2694 hevc_dxva2_hwaccel_select="hevc_decoder"
2695 hevc_qsv_hwaccel_deps="libmfx"
2696 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2697 hevc_vaapi_hwaccel_select="hevc_decoder"
2698 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2699 hevc_vdpau_hwaccel_select="hevc_decoder"
2700 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2701 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2702 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2703 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2704 mpeg_xvmc_hwaccel_deps="xvmc"
2705 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2706 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2707 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2708 mpeg1_vdpau_hwaccel_deps="vdpau"
2709 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2711 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_xvmc_hwaccel_deps="xvmc"
2713 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2714 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2715 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2716 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_dxva2_hwaccel_deps="dxva2"
2721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2723 mpeg2_mmal_hwaccel_deps="mmal"
2724 mpeg2_qsv_hwaccel_deps="libmfx"
2725 mpeg2_vaapi_hwaccel_deps="vaapi"
2726 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_vdpau_hwaccel_deps="vdpau"
2728 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2730 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_xvmc_hwaccel_deps="xvmc"
2732 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2733 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2734 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2735 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2736 mpeg4_mmal_hwaccel_deps="mmal"
2737 mpeg4_vaapi_hwaccel_deps="vaapi"
2738 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2739 mpeg4_vdpau_hwaccel_deps="vdpau"
2740 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2741 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2742 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2743 vc1_cuvid_hwaccel_deps="cuda cuvid"
2744 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2745 vc1_d3d11va_hwaccel_deps="d3d11va"
2746 vc1_d3d11va_hwaccel_select="vc1_decoder"
2747 vc1_d3d11va2_hwaccel_deps="d3d11va"
2748 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2749 vc1_dxva2_hwaccel_deps="dxva2"
2750 vc1_dxva2_hwaccel_select="vc1_decoder"
2751 vc1_mmal_hwaccel_deps="mmal"
2752 vc1_qsv_hwaccel_deps="libmfx"
2753 vc1_vaapi_hwaccel_deps="vaapi"
2754 vc1_vaapi_hwaccel_select="vc1_decoder"
2755 vc1_vdpau_hwaccel_deps="vdpau"
2756 vc1_vdpau_hwaccel_select="vc1_decoder"
2757 vp8_cuvid_hwaccel_deps="cuda cuvid"
2758 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2759 vp9_cuvid_hwaccel_deps="cuda cuvid"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2776 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2777
2778 # hardware-accelerated codecs
2779 omx_deps="libdl pthreads"
2780 omx_rpi_select="omx"
2781 qsv_deps="libmfx"
2782 qsvdec_select="qsv"
2783 qsvenc_select="qsv"
2784 vaapi_encode_deps="vaapi"
2785 v4l2_m2m_deps_any="linux_videodev2_h"
2786
2787 hwupload_cuda_filter_deps="cuda"
2788 scale_npp_filter_deps="cuda libnpp"
2789 scale_cuda_filter_deps="cuda_sdk"
2790 thumbnail_cuda_filter_deps="cuda_sdk"
2791
2792 nvenc_deps="cuda"
2793 nvenc_deps_any="libdl LoadLibrary"
2794 nvenc_encoder_deps="nvenc"
2795
2796 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2798 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2799 h264_cuvid_decoder_deps="cuda cuvid"
2800 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2801 h264_mediacodec_decoder_deps="mediacodec"
2802 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2803 h264_mmal_decoder_deps="mmal"
2804 h264_nvenc_encoder_deps="nvenc"
2805 h264_omx_encoder_deps="omx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_cuvid_decoder_deps="cuda cuvid"
2815 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_mediacodec_decoder_deps="mediacodec"
2817 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2818 hevc_nvenc_encoder_deps="nvenc"
2819 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2820 hevc_qsv_encoder_select="hevcparse qsvenc"
2821 hevc_rkmpp_decoder_deps="rkmpp"
2822 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2823 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2824 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2825 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2826 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 mjpeg_cuvid_decoder_deps="cuda cuvid"
2828 mjpeg_qsv_encoder_deps="libmfx"
2829 mjpeg_qsv_encoder_select="qsvenc"
2830 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2831 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2832 mpeg1_cuvid_decoder_deps="cuda cuvid"
2833 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2834 mpeg2_crystalhd_decoder_select="crystalhd"
2835 mpeg2_cuvid_decoder_deps="cuda cuvid"
2836 mpeg2_mmal_decoder_deps="mmal"
2837 mpeg2_mediacodec_decoder_deps="mediacodec"
2838 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2839 mpeg2_qsv_encoder_select="qsvenc"
2840 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2841 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2842 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2843 mpeg4_crystalhd_decoder_select="crystalhd"
2844 mpeg4_cuvid_decoder_deps="cuda cuvid"
2845 mpeg4_mediacodec_decoder_deps="mediacodec"
2846 mpeg4_mmal_decoder_deps="mmal"
2847 mpeg4_omx_encoder_deps="omx"
2848 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2849 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 msmpeg4_crystalhd_decoder_select="crystalhd"
2851 nvenc_h264_encoder_select="h264_nvenc_encoder"
2852 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2853 vc1_crystalhd_decoder_select="crystalhd"
2854 vc1_cuvid_decoder_deps="cuda cuvid"
2855 vc1_mmal_decoder_deps="mmal"
2856 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2857 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2858 vp8_cuvid_decoder_deps="cuda cuvid"
2859 vp8_mediacodec_decoder_deps="mediacodec"
2860 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2861 vp8_rkmpp_decoder_deps="rkmpp"
2862 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2863 vp8_vaapi_encoder_select="vaapi_encode"
2864 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2865 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp9_cuvid_decoder_deps="cuda cuvid"
2867 vp9_mediacodec_decoder_deps="mediacodec"
2868 vp9_rkmpp_decoder_deps="rkmpp"
2869 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2870 vp9_vaapi_encoder_select="vaapi_encode"
2871 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2872 wmv3_crystalhd_decoder_select="crystalhd"
2873
2874 # parsers
2875 aac_parser_select="adts_header"
2876 h264_parser_select="golomb h264dsp h264parse"
2877 hevc_parser_select="hevcparse"
2878 mpegaudio_parser_select="mpegaudioheader"
2879 mpegvideo_parser_select="mpegvideo"
2880 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2881 vc1_parser_select="vc1dsp"
2882
2883 # bitstream_filters
2884 aac_adtstoasc_bsf_select="adts_header"
2885 h264_metadata_bsf_select="cbs_h264"
2886 h264_redundant_pps_bsf_select="cbs_h264"
2887 hevc_metadata_bsf_select="cbs_h265"
2888 mjpeg2jpeg_bsf_select="jpegtables"
2889 mpeg2_metadata_bsf_select="cbs_mpeg2"
2890 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2891
2892 # external libraries
2893 aac_at_decoder_deps="audiotoolbox"
2894 ac3_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_select="ac3_parser"
2896 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2897 alac_at_decoder_deps="audiotoolbox"
2898 amr_nb_at_decoder_deps="audiotoolbox"
2899 avisynth_deps_any="libdl LoadLibrary"
2900 avisynth_demuxer_deps="avisynth"
2901 avisynth_demuxer_select="riffdec"
2902 eac3_at_decoder_deps="audiotoolbox"
2903 eac3_at_decoder_select="ac3_parser"
2904 gsm_ms_at_decoder_deps="audiotoolbox"
2905 ilbc_at_decoder_deps="audiotoolbox"
2906 mp1_at_decoder_deps="audiotoolbox"
2907 mp2_at_decoder_deps="audiotoolbox"
2908 mp3_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_select="mpegaudioheader"
2910 mp2_at_decoder_select="mpegaudioheader"
2911 mp3_at_decoder_select="mpegaudioheader"
2912 pcm_alaw_at_decoder_deps="audiotoolbox"
2913 pcm_mulaw_at_decoder_deps="audiotoolbox"
2914 qdmc_at_decoder_deps="audiotoolbox"
2915 qdm2_at_decoder_deps="audiotoolbox"
2916 aac_at_encoder_deps="audiotoolbox"
2917 aac_at_encoder_select="audio_frame_queue"
2918 alac_at_encoder_deps="audiotoolbox"
2919 alac_at_encoder_select="audio_frame_queue"
2920 ilbc_at_encoder_deps="audiotoolbox"
2921 ilbc_at_encoder_select="audio_frame_queue"
2922 pcm_alaw_at_encoder_deps="audiotoolbox"
2923 pcm_alaw_at_encoder_select="audio_frame_queue"
2924 pcm_mulaw_at_encoder_deps="audiotoolbox"
2925 pcm_mulaw_at_encoder_select="audio_frame_queue"
2926 chromaprint_muxer_deps="chromaprint"
2927 h264_videotoolbox_encoder_deps="pthreads"
2928 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2929 libcelt_decoder_deps="libcelt"
2930 libfdk_aac_decoder_deps="libfdk_aac"
2931 libfdk_aac_encoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_select="audio_frame_queue"
2933 libgme_demuxer_deps="libgme"
2934 libgsm_decoder_deps="libgsm"
2935 libgsm_encoder_deps="libgsm"
2936 libgsm_ms_decoder_deps="libgsm"
2937 libgsm_ms_encoder_deps="libgsm"
2938 libilbc_decoder_deps="libilbc"
2939 libilbc_encoder_deps="libilbc"
2940 libkvazaar_encoder_deps="libkvazaar"
2941 libmodplug_demuxer_deps="libmodplug"
2942 libmp3lame_encoder_deps="libmp3lame"
2943 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2944 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2945 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_select="audio_frame_queue"
2947 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2948 libopenh264_decoder_deps="libopenh264"
2949 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2950 libopenh264_encoder_deps="libopenh264"
2951 libopenjpeg_decoder_deps="libopenjpeg"
2952 libopenjpeg_encoder_deps="libopenjpeg"
2953 libopenmpt_demuxer_deps="libopenmpt"
2954 libopus_decoder_deps="libopus"
2955 libopus_encoder_deps="libopus"
2956 libopus_encoder_select="audio_frame_queue"
2957 librsvg_decoder_deps="librsvg"
2958 libshine_encoder_deps="libshine"
2959 libshine_encoder_select="audio_frame_queue"
2960 libspeex_decoder_deps="libspeex"
2961 libspeex_encoder_deps="libspeex"
2962 libspeex_encoder_select="audio_frame_queue"
2963 libtheora_encoder_deps="libtheora"
2964 libtwolame_encoder_deps="libtwolame"
2965 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2966 libvorbis_decoder_deps="libvorbis"
2967 libvorbis_encoder_deps="libvorbis libvorbisenc"
2968 libvorbis_encoder_select="audio_frame_queue"
2969 libvpx_vp8_decoder_deps="libvpx"
2970 libvpx_vp8_encoder_deps="libvpx"
2971 libvpx_vp9_decoder_deps="libvpx"
2972 libvpx_vp9_encoder_deps="libvpx"
2973 libwavpack_encoder_deps="libwavpack"
2974 libwavpack_encoder_select="audio_frame_queue"
2975 libwebp_encoder_deps="libwebp"
2976 libwebp_anim_encoder_deps="libwebp"
2977 libx262_encoder_deps="libx262"
2978 libx264_encoder_deps="libx264"
2979 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2980 libx264rgb_encoder_select="libx264_encoder"
2981 libx265_encoder_deps="libx265"
2982 libxavs_encoder_deps="libxavs"
2983 libxvid_encoder_deps="libxvid"
2984 libzvbi_teletext_decoder_deps="libzvbi"
2985 videotoolbox_suggest="coreservices"
2986 videotoolbox_deps="corefoundation coremedia corevideo"
2987 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2988
2989 # demuxers / muxers
2990 ac3_demuxer_select="ac3_parser"
2991 aiff_muxer_select="iso_media"
2992 asf_demuxer_select="riffdec"
2993 asf_o_demuxer_select="riffdec"
2994 asf_muxer_select="riffenc"
2995 asf_stream_muxer_select="asf_muxer"
2996 avi_demuxer_select="iso_media riffdec exif"
2997 avi_muxer_select="riffenc"
2998 caf_demuxer_select="iso_media riffdec"
2999 caf_muxer_select="iso_media"
3000 dash_muxer_select="mp4_muxer"
3001 dash_demuxer_deps="libxml2"
3002 dirac_demuxer_select="dirac_parser"
3003 dts_demuxer_select="dca_parser"
3004 dtshd_demuxer_select="dca_parser"
3005 dv_demuxer_select="dvprofile"
3006 dv_muxer_select="dvprofile"
3007 dxa_demuxer_select="riffdec"
3008 eac3_demuxer_select="ac3_parser"
3009 f4v_muxer_select="mov_muxer"
3010 fifo_muxer_deps="threads"
3011 flac_demuxer_select="flac_parser"
3012 hds_muxer_select="flv_muxer"
3013 hls_muxer_select="mpegts_muxer"
3014 hls_muxer_suggest="gcrypt openssl"
3015 image2_alias_pix_demuxer_select="image2_demuxer"
3016 image2_brender_pix_demuxer_select="image2_demuxer"
3017 ipod_muxer_select="mov_muxer"
3018 ismv_muxer_select="mov_muxer"
3019 matroska_audio_muxer_select="matroska_muxer"
3020 matroska_demuxer_select="iso_media riffdec"
3021 matroska_demuxer_suggest="bzlib lzo zlib"
3022 matroska_muxer_select="iso_media riffenc"
3023 mmf_muxer_select="riffenc"
3024 mov_demuxer_select="iso_media riffdec"
3025 mov_demuxer_suggest="zlib"
3026 mov_muxer_select="iso_media riffenc rtpenc_chain"
3027 mp3_demuxer_select="mpegaudio_parser"
3028 mp3_muxer_select="mpegaudioheader"
3029 mp4_muxer_select="mov_muxer"
3030 mpegts_demuxer_select="iso_media"
3031 mpegts_muxer_select="adts_muxer latm_muxer"
3032 mpegtsraw_demuxer_select="mpegts_demuxer"
3033 mxf_d10_muxer_select="mxf_muxer"
3034 mxf_opatom_muxer_select="mxf_muxer"
3035 nut_muxer_select="riffenc"
3036 nuv_demuxer_select="riffdec"
3037 oga_muxer_select="ogg_muxer"
3038 ogg_demuxer_select="dirac_parse"
3039 ogv_muxer_select="ogg_muxer"
3040 opus_muxer_select="ogg_muxer"
3041 psp_muxer_select="mov_muxer"
3042 rtp_demuxer_select="sdp_demuxer"
3043 rtp_muxer_select="golomb"
3044 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3045 rtsp_demuxer_select="http_protocol rtpdec"
3046 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3047 sap_demuxer_select="sdp_demuxer"
3048 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3049 sdp_demuxer_select="rtpdec"
3050 smoothstreaming_muxer_select="ismv_muxer"
3051 spdif_demuxer_select="adts_header"
3052 spdif_muxer_select="adts_header"
3053 spx_muxer_select="ogg_muxer"
3054 swf_demuxer_suggest="zlib"
3055 tak_demuxer_select="tak_parser"
3056 tg2_muxer_select="mov_muxer"
3057 tgp_muxer_select="mov_muxer"
3058 vobsub_demuxer_select="mpegps_demuxer"
3059 w64_demuxer_select="wav_demuxer"
3060 w64_muxer_select="wav_muxer"
3061 wav_demuxer_select="riffdec"
3062 wav_muxer_select="riffenc"
3063 webm_muxer_select="iso_media riffenc"
3064 webm_dash_manifest_demuxer_select="matroska_demuxer"
3065 wtv_demuxer_select="mpegts_demuxer riffdec"
3066 wtv_muxer_select="mpegts_muxer riffenc"
3067 xmv_demuxer_select="riffdec"
3068 xwma_demuxer_select="riffdec"
3069
3070 # indevs / outdevs
3071 alsa_indev_deps="alsa"
3072 alsa_outdev_deps="alsa"
3073 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3074 avfoundation_indev_suggest="coregraphics applicationservices"
3075 avfoundation_indev_extralibs="-framework Foundation"
3076 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3077 caca_outdev_deps="libcaca"
3078 decklink_deps_any="libdl LoadLibrary"
3079 decklink_indev_deps="decklink threads"
3080 decklink_indev_extralibs="-lstdc++"
3081 decklink_outdev_deps="decklink threads"
3082 decklink_outdev_extralibs="-lstdc++"
3083 libndi_newtek_indev_deps="libndi_newtek"
3084 libndi_newtek_indev_extralibs="-lndi"
3085 libndi_newtek_outdev_deps="libndi_newtek"
3086 libndi_newtek_outdev_extralibs="-lndi"
3087 dshow_indev_deps="IBaseFilter"
3088 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3089 fbdev_indev_deps="linux_fb_h"
3090 fbdev_outdev_deps="linux_fb_h"
3091 gdigrab_indev_deps="CreateDIBSection"
3092 gdigrab_indev_extralibs="-lgdi32"
3093 gdigrab_indev_select="bmp_decoder"
3094 iec61883_indev_deps="libiec61883"
3095 jack_indev_deps="libjack"
3096 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3097 kmsgrab_indev_deps="libdrm"
3098 lavfi_indev_deps="avfilter"
3099 libcdio_indev_deps="libcdio"
3100 libdc1394_indev_deps="libdc1394"
3101 openal_indev_deps="openal"
3102 opengl_outdev_deps="opengl"
3103 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3104 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3105 pulse_indev_deps="libpulse"
3106 pulse_outdev_deps="libpulse"
3107 sdl2_outdev_deps="sdl2"
3108 sndio_indev_deps="sndio"
3109 sndio_outdev_deps="sndio"
3110 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3111 v4l2_indev_suggest="libv4l2"
3112 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_outdev_suggest="libv4l2"
3114 vfwcap_indev_deps="vfw32 vfwcap_defines"
3115 xcbgrab_indev_deps="libxcb"
3116 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3117 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3118 xv_outdev_extralibs="-lXv -lX11 -lXext"
3119
3120 # protocols
3121 async_protocol_deps="threads"
3122 bluray_protocol_deps="libbluray"
3123 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3124 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3125 ffrtmpcrypt_protocol_select="tcp_protocol"
3126 ffrtmphttp_protocol_conflict="librtmp_protocol"
3127 ffrtmphttp_protocol_select="http_protocol"
3128 ftp_protocol_select="tcp_protocol"
3129 gopher_protocol_select="network"
3130 http_protocol_select="tcp_protocol"
3131 http_protocol_suggest="zlib"
3132 httpproxy_protocol_select="tcp_protocol"
3133 httpproxy_protocol_suggest="zlib"
3134 https_protocol_select="tls_protocol"
3135 https_protocol_suggest="zlib"
3136 icecast_protocol_select="http_protocol"
3137 librtmp_protocol_deps="librtmp"
3138 librtmpe_protocol_deps="librtmp"
3139 librtmps_protocol_deps="librtmp"
3140 librtmpt_protocol_deps="librtmp"
3141 librtmpte_protocol_deps="librtmp"
3142 libsmbclient_protocol_deps="libsmbclient gplv3"
3143 libssh_protocol_deps="libssh"
3144 mmsh_protocol_select="http_protocol"
3145 mmst_protocol_select="network"
3146 rtmp_protocol_conflict="librtmp_protocol"
3147 rtmp_protocol_select="tcp_protocol"
3148 rtmp_protocol_suggest="zlib"
3149 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3150 rtmpe_protocol_suggest="zlib"
3151 rtmps_protocol_conflict="librtmp_protocol"
3152 rtmps_protocol_select="tls_protocol"
3153 rtmps_protocol_suggest="zlib"
3154 rtmpt_protocol_select="ffrtmphttp_protocol"
3155 rtmpt_protocol_suggest="zlib"
3156 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3157 rtmpte_protocol_suggest="zlib"
3158 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3159 rtmpts_protocol_suggest="zlib"
3160 rtp_protocol_select="udp_protocol"
3161 schannel_conflict="openssl gnutls"
3162 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3163 sctp_protocol_select="network"
3164 securetransport_conflict="openssl gnutls"
3165 srtp_protocol_select="rtp_protocol srtp"
3166 tcp_protocol_select="network"
3167 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3168 tls_protocol_select="tcp_protocol"
3169 udp_protocol_select="network"
3170 udplite_protocol_select="network"
3171 unix_protocol_deps="sys_un_h"
3172 unix_protocol_select="network"
3173
3174 # filters
3175 afftfilt_filter_deps="avcodec"
3176 afftfilt_filter_select="fft"
3177 afir_filter_deps="avcodec"
3178 afir_filter_select="fft"
3179 amovie_filter_deps="avcodec avformat"
3180 aresample_filter_deps="swresample"
3181 ass_filter_deps="libass"
3182 atempo_filter_deps="avcodec"
3183 atempo_filter_select="rdft"
3184 azmq_filter_deps="libzmq"
3185 blackframe_filter_deps="gpl"
3186 boxblur_filter_deps="gpl"
3187 bs2b_filter_deps="libbs2b"
3188 colormatrix_filter_deps="gpl"
3189 coreimage_filter_deps="coreimage appkit"
3190 coreimage_filter_extralibs="-framework OpenGL"
3191 coreimagesrc_filter_deps="coreimage appkit"
3192 coreimagesrc_filter_extralibs="-framework OpenGL"
3193 cover_rect_filter_deps="avcodec avformat gpl"
3194 cropdetect_filter_deps="gpl"
3195 deinterlace_qsv_filter_deps="libmfx"
3196 deinterlace_vaapi_filter_deps="vaapi"
3197 delogo_filter_deps="gpl"
3198 deshake_filter_select="pixelutils"
3199 deshake_filter_suggest="opencl"
3200 drawtext_filter_deps="libfreetype"
3201 drawtext_filter_suggest="libfontconfig libfribidi"
3202 elbg_filter_deps="avcodec"
3203 eq_filter_deps="gpl"
3204 fftfilt_filter_deps="avcodec"
3205 fftfilt_filter_select="rdft"
3206 find_rect_filter_deps="avcodec avformat gpl"
3207 firequalizer_filter_deps="avcodec"
3208 firequalizer_filter_select="rdft"
3209 flite_filter_deps="libflite"
3210 framerate_filter_select="pixelutils"
3211 frei0r_filter_deps="frei0r libdl"
3212 frei0r_src_filter_deps="frei0r libdl"
3213 fspp_filter_deps="gpl"
3214 geq_filter_deps="gpl"
3215 histeq_filter_deps="gpl"
3216 hqdn3d_filter_deps="gpl"
3217 interlace_filter_deps="gpl"
3218 kerndeint_filter_deps="gpl"
3219 ladspa_filter_deps="ladspa libdl"
3220 mcdeint_filter_deps="avcodec gpl"
3221 movie_filter_deps="avcodec avformat"
3222 mpdecimate_filter_deps="gpl"
3223 mpdecimate_filter_select="pixelutils"
3224 mptestsrc_filter_deps="gpl"
3225 negate_filter_deps="lut_filter"
3226 nnedi_filter_deps="gpl"
3227 ocr_filter_deps="libtesseract"
3228 ocv_filter_deps="libopencv"
3229 owdenoise_filter_deps="gpl"
3230 pan_filter_deps="swresample"
3231 perspective_filter_deps="gpl"
3232 phase_filter_deps="gpl"
3233 pp7_filter_deps="gpl"
3234 pp_filter_deps="gpl postproc"
3235 pullup_filter_deps="gpl"
3236 removelogo_filter_deps="avcodec avformat swscale"
3237 repeatfields_filter_deps="gpl"
3238 resample_filter_deps="avresample"
3239 rubberband_filter_deps="librubberband"
3240 sab_filter_deps="gpl swscale"
3241 scale2ref_filter_deps="swscale"
3242 scale_filter_deps="swscale"
3243 scale_qsv_filter_deps="libmfx"
3244 select_filter_select="pixelutils"
3245 showcqt_filter_deps="avcodec avformat swscale"
3246 showcqt_filter_suggest="libfontconfig libfreetype"
3247 showcqt_filter_select="fft"
3248 showfreqs_filter_deps="avcodec"
3249 showfreqs_filter_select="fft"
3250 showspectrum_filter_deps="avcodec"
3251 showspectrum_filter_select="fft"
3252 showspectrumpic_filter_deps="avcodec"
3253 showspectrumpic_filter_select="fft"
3254 signature_filter_deps="gpl avcodec avformat"
3255 smartblur_filter_deps="gpl swscale"
3256 sofalizer_filter_deps="libmysofa avcodec"
3257 sofalizer_filter_select="fft"
3258 spectrumsynth_filter_deps="avcodec"
3259 spectrumsynth_filter_select="fft"
3260 spp_filter_deps="gpl avcodec"
3261 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3262 stereo3d_filter_deps="gpl"
3263 subtitles_filter_deps="avformat avcodec libass"
3264 super2xsai_filter_deps="gpl"
3265 pixfmts_super2xsai_test_deps="super2xsai_filter"
3266 tinterlace_filter_deps="gpl"
3267 tinterlace_merge_test_deps="tinterlace_filter"
3268 tinterlace_pad_test_deps="tinterlace_filter"
3269 tonemap_filter_deps="const_nan"
3270 uspp_filter_deps="gpl avcodec"
3271 unsharp_filter_suggest="opencl"
3272 vaguedenoiser_filter_deps="gpl"
3273 vidstabdetect_filter_deps="libvidstab"
3274 vidstabtransform_filter_deps="libvidstab"
3275 libvmaf_filter_deps="libvmaf"
3276 zmq_filter_deps="libzmq"
3277 zoompan_filter_deps="swscale"
3278 zscale_filter_deps="libzimg const_nan"
3279 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 x86asmexe_default="nasm"
3381 windres_default="windres"
3382 nvcc_default="nvcc"
3383 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3384 striptype="direct"
3385
3386 # OS
3387 target_os_default=$(tolower $(uname -s))
3388 host_os=$target_os_default
3389
3390 # machine
3391 if test "$target_os_default" = aix; then
3392     arch_default=$(uname -p)
3393     strip_default="strip -X32_64"
3394 else
3395     arch_default=$(uname -m)
3396 fi
3397 cpu="generic"
3398 intrinsics="none"
3399
3400 # configurable options
3401 enable $PROGRAM_LIST
3402 enable $DOCUMENT_LIST
3403 enable $EXAMPLE_LIST
3404 enable $(filter_out avresample $LIBRARY_LIST)
3405 enable stripping
3406
3407 enable asm
3408 enable debug
3409 enable doc
3410 enable faan faandct faanidct
3411 enable optimizations
3412 enable runtime_cpudetect
3413 enable safe_bitstream_reader
3414 enable static
3415 enable swscale_alpha
3416 enable valgrind_backtrace
3417
3418 sws_max_filter_size_default=256
3419 set_default sws_max_filter_size
3420
3421 # internal components are enabled by default
3422 enable $EXTRALIBS_LIST
3423
3424 # Avoid external, non-system, libraries getting enabled by dependency resolution
3425 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3426
3427 # build settings
3428 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3429 LIBPREF="lib"
3430 LIBSUF=".a"
3431 FULLNAME='$(NAME)$(BUILDSUF)'
3432 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3433 SLIBPREF="lib"
3434 SLIBSUF=".so"
3435 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3436 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3437 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3438 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3439 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3440 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3441 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3442
3443 asflags_filter=echo
3444 cflags_filter=echo
3445 ldflags_filter=echo
3446
3447 AS_C='-c'
3448 AS_O='-o $@'
3449 CC_C='-c'
3450 CC_E='-E -o $@'
3451 CC_O='-o $@'
3452 CXX_C='-c'
3453 CXX_O='-o $@'
3454 OBJCC_C='-c'
3455 OBJCC_E='-E -o $@'
3456 OBJCC_O='-o $@'
3457 X86ASM_O='-o $@'
3458 LD_O='-o $@'
3459 LD_LIB='-l%'
3460 LD_PATH='-L'
3461 HOSTCC_C='-c'
3462 HOSTCC_E='-E -o $@'
3463 HOSTCC_O='-o $@'
3464 HOSTLD_O='-o $@'
3465 NVCC_C='-c'
3466 NVCC_O='-o $@'
3467
3468 host_extralibs='-lm'
3469 host_cflags_filter=echo
3470 host_ldflags_filter=echo
3471
3472 target_path='$(CURDIR)'
3473
3474 # since the object filename is not given with the -MM flag, the compiler
3475 # is only able to print the basename, and we must add the path ourselves
3476 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3477 DEPFLAGS='-MM'
3478
3479 mkdir -p ffbuild
3480
3481 # find source path
3482 if test -f configure; then
3483     source_path=.
3484 else
3485     source_path=$(cd $(dirname "$0"); pwd)
3486     case "$source_path" in
3487         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3488     esac
3489     test -e "$source_path/config.h" &&
3490         die "Out of tree builds are impossible with config.h in source dir."
3491 fi
3492
3493 for v in "$@"; do
3494     r=${v#*=}
3495     l=${v%"$r"}
3496     r=$(sh_quote "$r")
3497     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3498 done
3499
3500 find_things(){
3501     thing=$1
3502     pattern=$2
3503     file=$source_path/$3
3504     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3505 }
3506
3507 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3508 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3509 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3510 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3511 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3512 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3513 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3514 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3515 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3516
3517 find_things_extern(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3522 }
3523
3524 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3525 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3526
3527 AVCODEC_COMPONENTS_LIST="
3528     $BSF_LIST
3529     $DECODER_LIST
3530     $ENCODER_LIST
3531     $HWACCEL_LIST
3532     $PARSER_LIST
3533 "
3534
3535 AVDEVICE_COMPONENTS_LIST="
3536     $INDEV_LIST
3537     $OUTDEV_LIST
3538 "
3539
3540 AVFILTER_COMPONENTS_LIST="
3541     $FILTER_LIST
3542 "
3543
3544 AVFORMAT_COMPONENTS_LIST="
3545     $DEMUXER_LIST
3546     $MUXER_LIST
3547     $PROTOCOL_LIST
3548 "
3549
3550 ALL_COMPONENTS="
3551     $AVCODEC_COMPONENTS_LIST
3552     $AVDEVICE_COMPONENTS_LIST
3553     $AVFILTER_COMPONENTS_LIST
3554     $AVFORMAT_COMPONENTS_LIST
3555 "
3556
3557 for n in $COMPONENT_LIST; do
3558     v=$(toupper ${n%s})_LIST
3559     eval enable \$$v
3560     eval ${n}_if_any="\$$v"
3561 done
3562
3563 enable $ARCH_EXT_LIST
3564
3565 die_unknown(){
3566     echo "Unknown option \"$1\"."
3567     echo "See $0 --help for available options."
3568     exit 1
3569 }
3570
3571 print_in_columns() {
3572     cols=$(expr $ncols / 24)
3573     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3574 }
3575
3576 show_list() {
3577     suffix=_$1
3578     shift
3579     echo $* | sed s/$suffix//g | print_in_columns
3580     exit 0
3581 }
3582
3583 rand_list(){
3584     IFS=', '
3585     set -- $*
3586     unset IFS
3587     for thing; do
3588         comp=${thing%:*}
3589         prob=${thing#$comp}
3590         prob=${prob#:}
3591         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3592         echo "prob ${prob:-0.5}"
3593         printf '%s\n' $comp
3594     done
3595 }
3596
3597 do_random(){
3598     action=$1
3599     shift
3600     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3601     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3602 }
3603
3604 for opt do
3605     optval="${opt#*=}"
3606     case "$opt" in
3607         --extra-ldflags=*)
3608             add_ldflags $optval
3609         ;;
3610         --extra-ldexeflags=*)
3611             add_ldexeflags $optval
3612         ;;
3613         --extra-ldsoflags=*)
3614             add_ldsoflags $optval
3615         ;;
3616         --extra-ldlibflags=*)
3617             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3618                  "removed in the future. Use --extra-ldsoflags instead."
3619             add_ldsoflags $optval
3620         ;;
3621         --extra-libs=*)
3622             add_extralibs $optval
3623         ;;
3624         --disable-devices)
3625             disable $INDEV_LIST $OUTDEV_LIST
3626         ;;
3627         --enable-debug=*)
3628             debuglevel="$optval"
3629         ;;
3630         --disable-programs)
3631             disable $PROGRAM_LIST
3632         ;;
3633         --disable-everything)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635         ;;
3636         --disable-all)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638             disable $LIBRARY_LIST $PROGRAM_LIST doc
3639             enable avutil
3640         ;;
3641         --enable-random|--disable-random)
3642             action=${opt%%-random}
3643             do_random ${action#--} $COMPONENT_LIST
3644         ;;
3645         --enable-random=*|--disable-random=*)
3646             action=${opt%%-random=*}
3647             do_random ${action#--} $optval
3648         ;;
3649         --enable-sdl)
3650             enable sdl2
3651         ;;
3652         --enable-*=*|--disable-*=*)
3653             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3654             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3655             eval list=\$$(toupper $thing)_LIST
3656             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3657             list=$(filter "$name" $list)
3658             [ "$list" = "" ] && warn "Option $opt did not match anything"
3659             $action $list
3660         ;;
3661         --enable-yasm|--disable-yasm)
3662             warn "The ${opt} option is only provided for compatibility and will be\n"\
3663                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3664             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3665         ;;
3666         --yasmexe=*)
3667             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --x86asmexe instead."
3669             x86asmexe="$optval"
3670         ;;
3671         --enable-?*|--disable-?*)
3672             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3673             if is_in $option $COMPONENT_LIST; then
3674                 test $action = disable && action=unset
3675                 eval $action \$$(toupper ${option%s})_LIST
3676             elif is_in $option $CMDLINE_SELECT; then
3677                 $action $option
3678             else
3679                 die_unknown $opt
3680             fi
3681         ;;
3682         --list-*)
3683             NAME="${opt#--list-}"
3684             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3685             NAME=${NAME%s}
3686             eval show_list $NAME \$$(toupper $NAME)_LIST
3687         ;;
3688         --help|-h) show_help
3689         ;;
3690         --quiet|-q) quiet=yes
3691         ;;
3692         --fatal-warnings) enable fatal_warnings
3693         ;;
3694         --libfuzzer=*)
3695             libfuzzer_path="$optval"
3696         ;;
3697         *)
3698             optname="${opt%%=*}"
3699             optname="${optname#--}"
3700             optname=$(echo "$optname" | sed 's/-/_/g')
3701             if is_in $optname $CMDLINE_SET; then
3702                 eval $optname='$optval'
3703             elif is_in $optname $CMDLINE_APPEND; then
3704                 append $optname "$optval"
3705             else
3706                 die_unknown $opt
3707             fi
3708         ;;
3709     esac
3710 done
3711
3712 for e in $env; do
3713     eval "export $e"
3714 done
3715
3716 if disabled autodetect; then
3717
3718     # Unless iconv is explicitely disabled by the user, we still want to probe
3719     # for the iconv from the libc.
3720     disabled iconv || enable libc_iconv
3721
3722     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724 fi
3725 # Mark specifically enabled, but normally autodetected libraries as requested.
3726 for lib in $AUTODETECT_LIBS; do
3727     enabled $lib && request $lib
3728 done
3729 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3730 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732
3733 disabled logging && logfile=/dev/null
3734
3735 die_license_disabled() {
3736     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3737 }
3738
3739 die_license_disabled_gpl() {
3740     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3741 }
3742
3743 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3744 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3745
3746 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3747 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3748
3749 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3750
3751 enabled_all gnutls openssl &&
3752     die "GnuTLS and OpenSSL must not be enabled at the same time."
3753
3754 # Disable all the library-specific components if the library itself
3755 # is disabled, see AVCODEC_LIST and following _LIST variables.
3756
3757 disable_components(){
3758     disabled ${1} && disable $(
3759         eval components="\$$(toupper ${1})_COMPONENTS"
3760         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3761     )
3762 }
3763
3764 map 'disable_components $v' $LIBRARY_LIST
3765
3766 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3767 set >> $logfile
3768
3769 test -n "$valgrind" && toolchain="valgrind-memcheck"
3770
3771 enabled ossfuzz && {
3772     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3773     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3774 }
3775
3776 case "$toolchain" in
3777     *-asan)
3778         cc_default="${toolchain%-asan}"
3779         add_cflags  -fsanitize=address
3780         add_ldflags -fsanitize=address
3781     ;;
3782     *-msan)
3783         cc_default="${toolchain%-msan}"
3784         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3785         add_ldflags -fsanitize=memory
3786     ;;
3787     *-tsan)
3788         cc_default="${toolchain%-tsan}"
3789         add_cflags  -fsanitize=thread -fPIE
3790         add_ldflags -fsanitize=thread -pie
3791         case "$toolchain" in
3792             gcc-tsan)
3793                 add_cflags  -fPIC
3794                 add_ldflags -fPIC
3795                 ;;
3796         esac
3797     ;;
3798     *-usan)
3799         cc_default="${toolchain%-usan}"
3800         add_cflags  -fsanitize=undefined
3801         add_ldflags -fsanitize=undefined
3802     ;;
3803     valgrind-*)
3804         target_exec_default="valgrind"
3805         case "$toolchain" in
3806             valgrind-massif)
3807                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3808                 ;;
3809             valgrind-memcheck)
3810                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3811                 ;;
3812         esac
3813     ;;
3814     msvc)
3815         # Check whether the current MSVC version needs the C99 converter.
3816         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3817         # support enough of C99 to build ffmpeg. Default to the new
3818         # behaviour if the regexp was unable to match anything, since this
3819         # successfully parses the version number of existing supported
3820         # versions that require the converter (MSVC 2010 and 2012).
3821         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3822         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3823             cc_default="cl"
3824             cxx_default="cl"
3825         else
3826             cc_default="c99wrap cl"
3827             cxx_default="c99wrap cl"
3828         fi
3829         ld_default="$source_path/compat/windows/mslink"
3830         nm_default="dumpbin -symbols"
3831         ar_default="lib"
3832         case "$arch" in
3833         arm*)
3834             as_default="armasm"
3835             ;;
3836         esac
3837         target_os_default="win32"
3838         # Use a relative path for TMPDIR. This makes sure all the
3839         # ffconf temp files are written with a relative path, avoiding
3840         # issues with msys/win32 path conversion for MSVC parameters
3841         # such as -Fo<file> or -out:<file>.
3842         TMPDIR=.
3843     ;;
3844     icl)
3845         cc_default="icl"
3846         ld_default="xilink"
3847         nm_default="dumpbin -symbols"
3848         ar_default="xilib"
3849         target_os_default="win32"
3850         TMPDIR=.
3851     ;;
3852     gcov)
3853         add_cflags  -fprofile-arcs -ftest-coverage
3854         add_ldflags -fprofile-arcs -ftest-coverage
3855     ;;
3856     llvm-cov)
3857         add_cflags -fprofile-arcs -ftest-coverage
3858         add_ldflags --coverage
3859     ;;
3860     hardened)
3861         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3862         add_cflags   -fno-strict-overflow -fstack-protector-all
3863         add_ldflags  -Wl,-z,relro -Wl,-z,now
3864         add_cflags   -fPIE
3865         add_ldexeflags -fPIE -pie
3866     ;;
3867     ?*)
3868         die "Unknown toolchain $toolchain"
3869     ;;
3870 esac
3871
3872 test -n "$cross_prefix" && enable cross_compile
3873
3874 if enabled cross_compile; then
3875     test -n "$arch" && test -n "$target_os" ||
3876         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3877 fi
3878
3879 ar_default="${cross_prefix}${ar_default}"
3880 cc_default="${cross_prefix}${cc_default}"
3881 cxx_default="${cross_prefix}${cxx_default}"
3882 nm_default="${cross_prefix}${nm_default}"
3883 pkg_config_default="${cross_prefix}${pkg_config_default}"
3884 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3885     ranlib_default="${cross_prefix}${ranlib_default} -D"
3886 else
3887     ranlib_default="${cross_prefix}${ranlib_default}"
3888 fi
3889 strip_default="${cross_prefix}${strip_default}"
3890 windres_default="${cross_prefix}${windres_default}"
3891
3892 sysinclude_default="${sysroot}/usr/include"
3893
3894 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3895     target_exec target_os x86asmexe nvcc
3896 enabled cross_compile || host_cc_default=$cc
3897 set_default host_cc
3898
3899 pkg_config_fail_message=""
3900 if ! $pkg_config --version >/dev/null 2>&1; then
3901     warn "$pkg_config not found, library detection may fail."
3902     pkg_config=false
3903 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3904     pkg_config_fail_message="
3905 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3906 fi
3907
3908 if test $doxygen != $doxygen_default && \
3909   ! $doxygen --version >/dev/null 2>&1; then
3910     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3911 fi
3912
3913 exesuf() {
3914     case $1 in
3915         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3916     esac
3917 }
3918
3919 EXESUF=$(exesuf $target_os)
3920 HOSTEXESUF=$(exesuf $host_os)
3921
3922 # set temporary file name
3923 : ${TMPDIR:=$TEMPDIR}
3924 : ${TMPDIR:=$TMP}
3925 : ${TMPDIR:=/tmp}
3926
3927 if [ -n "$tempprefix" ] ; then
3928     mktemp(){
3929         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3930         echo "$tmpname"
3931         mkdir "$tmpname"
3932     }
3933 elif ! check_cmd mktemp -u XXXXXX; then
3934     # simple replacement for missing mktemp
3935     # NOT SAFE FOR GENERAL USE
3936     mktemp(){
3937         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3938         echo "$tmpname"
3939         mkdir "$tmpname"
3940     }
3941 fi
3942
3943 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3944     die "Unable to create temporary directory in $TMPDIR."
3945
3946 tmpfile(){
3947     tmp="${FFTMPDIR}/test"$2
3948     (set -C; exec > $tmp) 2> /dev/null ||
3949         die "Unable to create temporary file in $FFTMPDIR."
3950     eval $1=$tmp
3951 }
3952
3953 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3954 trap 'exit 2' INT
3955
3956 tmpfile TMPASM .asm
3957 tmpfile TMPC   .c
3958 tmpfile TMPCPP .cpp
3959 tmpfile TMPE   $EXESUF
3960 tmpfile TMPH   .h
3961 tmpfile TMPM   .m
3962 tmpfile TMPO   .o
3963 tmpfile TMPS   .S
3964 tmpfile TMPSH  .sh
3965 tmpfile TMPV   .ver
3966
3967 unset -f mktemp
3968
3969 chmod +x $TMPE
3970
3971 # make sure we can execute files in $TMPDIR
3972 cat > $TMPSH 2>> $logfile <<EOF
3973 #! /bin/sh
3974 EOF
3975 chmod +x $TMPSH >> $logfile 2>&1
3976 if ! $TMPSH >> $logfile 2>&1; then
3977     cat <<EOF
3978 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3979 variable to another directory and make sure that it is not mounted noexec.
3980 EOF
3981     die "Sanity test failed."
3982 fi
3983
3984 armasm_flags(){
3985     for flag; do
3986         case $flag in
3987             # Filter out MSVC cl.exe options from cflags that shouldn't
3988             # be passed to gas-preprocessor
3989             -M[TD]*)                                            ;;
3990             *)                  echo $flag                      ;;
3991         esac
3992    done
3993 }
3994
3995 ccc_flags(){
3996     for flag; do
3997         case $flag in
3998             -std=c99)           echo -c99                       ;;
3999             -mcpu=*)            echo -arch ${flag#*=}           ;;
4000             -mieee)             echo -ieee                      ;;
4001             -O*|-fast)          echo $flag                      ;;
4002             -fno-math-errno)    echo -assume nomath_errno       ;;
4003             -g)                 echo -g3                        ;;
4004             -Wall)              echo -msg_enable level2         ;;
4005             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4006             -Wl,*)              echo $flag                      ;;
4007             -f*|-W*)                                            ;;
4008             *)                  echo $flag                      ;;
4009         esac
4010    done
4011 }
4012
4013 cparser_flags(){
4014     for flag; do
4015         case $flag in
4016             -Wno-switch)             echo -Wno-switch-enum ;;
4017             -Wno-format-zero-length) ;;
4018             -Wdisabled-optimization) ;;
4019             -Wno-pointer-sign)       echo -Wno-other ;;
4020             *)                       echo $flag ;;
4021         esac
4022     done
4023 }
4024
4025 msvc_common_flags(){
4026     for flag; do
4027         case $flag in
4028             # In addition to specifying certain flags under the compiler
4029             # specific filters, they must be specified here as well or else the
4030             # generic catch all at the bottom will print the original flag.
4031             -Wall)                ;;
4032             -Wextra)              ;;
4033             -std=c99)             ;;
4034             # Common flags
4035             -fomit-frame-pointer) ;;
4036             -g)                   echo -Z7 ;;
4037             -fno-math-errno)      ;;
4038             -fno-common)          ;;
4039             -fno-signed-zeros)    ;;
4040             -fPIC)                ;;
4041             -mthumb)              ;;
4042             -march=*)             ;;
4043             -lz)                  echo zlib.lib ;;
4044             -lx264)               echo libx264.lib ;;
4045             -lstdc++)             ;;
4046             -l*)                  echo ${flag#-l}.lib ;;
4047             -LARGEADDRESSAWARE)   echo $flag ;;
4048             -L*)                  echo -libpath:${flag#-L} ;;
4049             *)                    echo $flag ;;
4050         esac
4051     done
4052 }
4053
4054 msvc_flags(){
4055     msvc_common_flags "$@"
4056     for flag; do
4057         case $flag in
4058             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4059                                        -wd4554 ;;
4060             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4061                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4062                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4063                                        -wd4307 \
4064                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4065         esac
4066     done
4067 }
4068
4069 icl_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             # Despite what Intel's documentation says -Wall, which is supported
4074             # on Windows, does enable remarks so disable them here.
4075             -Wall)                echo $flag -Qdiag-disable:remark ;;
4076             -std=c99)             echo -Qstd=c99 ;;
4077             -flto)                echo -ipo ;;
4078         esac
4079     done
4080 }
4081
4082 icc_flags(){
4083     for flag; do
4084         case $flag in
4085             -flto)                echo -ipo ;;
4086             *)                    echo $flag ;;
4087         esac
4088     done
4089 }
4090
4091 pgi_flags(){
4092     for flag; do
4093         case $flag in
4094             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4095             -fomit-frame-pointer) echo -Mnoframe ;;
4096             -g)                   echo -gopt ;;
4097             *)                    echo $flag ;;
4098         esac
4099     done
4100 }
4101
4102 suncc_flags(){
4103     for flag; do
4104         case $flag in
4105             -march=*|-mcpu=*)
4106                 case "${flag#*=}" in
4107                     native)                   echo -xtarget=native       ;;
4108                     v9|niagara)               echo -xarch=sparc          ;;
4109                     ultrasparc)               echo -xarch=sparcvis       ;;
4110                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4111                     i586|pentium)             echo -xchip=pentium        ;;
4112                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4113                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4114                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4115                     pentium4*)          echo -xtarget=pentium4           ;;
4116                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4117                     *-sse3)             echo -xarch=sse3                 ;;
4118                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4119                     bonnell)                   echo -xarch=ssse3         ;;
4120                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4121                     westmere)                  echo -xtarget=westmere    ;;
4122                     silvermont)                echo -xarch=sse4_2        ;;
4123                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4124                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4125                                                echo -xarch=avx           ;;
4126                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4127                     btver1)                    echo -xarch=amdsse4a      ;;
4128                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4129                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4130                     k8|opteron|athlon64|athlon-fx)
4131                                                echo -xarch=sse2a         ;;
4132                     athlon*)                   echo -xarch=pentium_proa  ;;
4133                 esac
4134                 ;;
4135             -std=c99)             echo -xc99              ;;
4136             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4137             -fPIC)                echo -KPIC -xcode=pic32 ;;
4138             -W*,*)                echo $flag              ;;
4139             -f*-*|-W*|-mimpure-text)                      ;;
4140             -shared)              echo -G                 ;;
4141             *)                    echo $flag              ;;
4142         esac
4143     done
4144 }
4145
4146 tms470_flags(){
4147     for flag; do
4148         case $flag in
4149             -march=*|-mcpu=*)
4150                 case "${flag#*=}" in
4151                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4152                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4153                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4154                     armv6*|arm11*)          echo -mv=6   ;;
4155                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4156                                             echo -mv=5e  ;;
4157                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4158                 esac
4159                 ;;
4160             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4161             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4162             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4163             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4164             -msoft-float)   echo --float_support=vfplib       ;;
4165             -O[0-3]|-mf=*)  echo $flag                        ;;
4166             -g)             echo -g -mn                       ;;
4167             -pds=*)         echo $flag                        ;;
4168             -D*|-I*)        echo $flag                        ;;
4169             --gcc|--abi=*)  echo $flag                        ;;
4170             -me)            echo $flag                        ;;
4171         esac
4172     done
4173 }
4174
4175 probe_cc(){
4176     pfx=$1
4177     _cc=$2
4178     first=$3
4179
4180     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4181     unset _ld_o _ldflags _ld_lib _ld_path
4182     unset _depflags _DEPCMD _DEPFLAGS
4183     _flags_filter=echo
4184
4185     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4186         true # no-op to avoid reading stdin in following checks
4187     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4188         _type=llvm_gcc
4189         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4190         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4191         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4192         _cflags_speed='-O3'
4193         _cflags_size='-Os'
4194     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4195         _type=gcc
4196         gcc_version=$($_cc --version | head -n1)
4197         gcc_basever=$($_cc -dumpversion)
4198         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4199         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4200         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4201         case $gcc_basever in
4202             2) ;;
4203             2.*) ;;
4204             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4205         esac
4206         if [ "$first" = true ]; then
4207             case $gcc_basever in
4208                 4.2*)
4209                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4210             esac
4211         fi
4212         _cflags_speed='-O3'
4213         _cflags_size='-Os'
4214     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4215         _type=icc
4216         _ident=$($_cc --version | head -n1)
4217         _depflags='-MMD'
4218         _cflags_speed='-O3'
4219         _cflags_size='-Os'
4220         _cflags_noopt='-O1'
4221         _flags_filter=icc_flags
4222     elif $_cc -v 2>&1 | grep -q xlc; then
4223         _type=xlc
4224         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4225         _cflags_speed='-O5'
4226         _cflags_size='-O5 -qcompact'
4227     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4228         _type=ccc
4229         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4230         _DEPFLAGS='-M'
4231         _cflags_speed='-fast'
4232         _cflags_size='-O1'
4233         _flags_filter=ccc_flags
4234     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4235         test -d "$sysroot" || die "No valid sysroot specified."
4236         _type=armcc
4237         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4238         armcc_conf="$PWD/armcc.conf"
4239         $_cc --arm_linux_configure                 \
4240              --arm_linux_config_file="$armcc_conf" \
4241              --configure_sysroot="$sysroot"        \
4242              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4243              die "Error creating armcc configuration file."
4244         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4245         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4246         as_default="${cross_prefix}gcc"
4247         _depflags='-MMD'
4248         _cflags_speed='-O3'
4249         _cflags_size='-Os'
4250     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4251         _type=tms470
4252         _ident=$($_cc -version | head -n1 | tr -s ' ')
4253         _flags='--gcc --abi=eabi -me'
4254         _cc_e='-ppl -fe=$@'
4255         _cc_o='-fe=$@'
4256         _depflags='-ppa -ppd=$(@:.o=.d)'
4257         _cflags_speed='-O3 -mf=5'
4258         _cflags_size='-O3 -mf=2'
4259         _flags_filter=tms470_flags
4260     elif $_cc -v 2>&1 | grep -q clang; then
4261         _type=clang
4262         _ident=$($_cc --version 2>/dev/null | head -n1)
4263         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4264         _cflags_speed='-O3'
4265         _cflags_size='-Oz'
4266     elif $_cc -V 2>&1 | grep -q Sun; then
4267         _type=suncc
4268         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4269         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4270         _DEPFLAGS='-xM1 -xc99'
4271         _ldflags='-std=c99'
4272         _cflags_speed='-O5'
4273         _cflags_size='-O5 -xspace'
4274         _flags_filter=suncc_flags
4275     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4276         _type=pathscale
4277         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4278         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4279         _cflags_speed='-O2'
4280         _cflags_size='-Os'
4281         _flags_filter='filter_out -Wdisabled-optimization'
4282     elif $_cc -v 2>&1 | grep -q Open64; then
4283         _type=open64
4284         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4285         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4286         _cflags_speed='-O2'
4287         _cflags_size='-Os'
4288         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4289     elif $_cc -V 2>&1 | grep -q Portland; then
4290         _type=pgi
4291         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4292         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4293         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4294         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4295         _cflags_noopt="-O"
4296         _flags_filter=pgi_flags
4297     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4298         _type=armasm
4299         _ident=$($_cc | head -n1)
4300         # 4509: "This form of conditional instruction is deprecated"
4301         _flags="-nologo -ignore 4509"
4302         _flags_filter=armasm_flags
4303     elif $_cc 2>&1 | grep -q Intel; then
4304         _type=icl
4305         _ident=$($_cc 2>&1 | head -n1)
4306         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4307         # Not only is O3 broken on 13.x+ but it is slower on all previous
4308         # versions (tested) as well.
4309         _cflags_speed="-O2"
4310         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4311         if $_cc 2>&1 | grep -q Linker; then
4312             _ld_o='-out:$@'
4313         else
4314             _ld_o='-Fe$@'
4315         fi
4316         _cc_o='-Fo$@'
4317         _cc_e='-P'
4318         _flags_filter=icl_flags
4319         _ld_lib='lib%.a'
4320         _ld_path='-libpath:'
4321         # -Qdiag-error to make icl error when seeing certain unknown arguments
4322         _flags='-nologo -Qdiag-error:4044,10157'
4323         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4324         # with MSVC which enables it by default.
4325         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4326         disable stripping
4327     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4328         # lld can emulate multiple different linkers; in ms link.exe mode,
4329         # the -? parameter gives the help output which contains an identifyable
4330         # string, while it gives an error in other modes.
4331         _type=lld-link
4332         # The link.exe mode doesn't have a switch for getting the version,
4333         # but we can force it back to gnu mode and get the version from there.
4334         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4335         _ld_o='-out:$@'
4336         _flags_filter=msvc_flags
4337         _ld_lib='lib%.a'
4338         _ld_path='-libpath:'
4339     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4340         _type=msvc
4341         _ident=$($_cc 2>&1 | head -n1)
4342         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4343         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4344         _cflags_speed="-O2"
4345         _cflags_size="-O1"
4346         _cflags_noopt="-O1"
4347         if $_cc -nologo- 2>&1 | grep -q Linker; then
4348             _ld_o='-out:$@'
4349         else
4350             _ld_o='-Fe$@'
4351         fi
4352         _cc_o='-Fo$@'
4353         _cc_e='-P -Fi$@'
4354         _flags_filter=msvc_flags
4355         _ld_lib='lib%.a'
4356         _ld_path='-libpath:'
4357         _flags='-nologo'
4358         disable stripping
4359     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4360         _type=cparser
4361         _ident=$($_cc --version | head -n1)
4362         _depflags='-MMD'
4363         _cflags_speed='-O4'
4364         _cflags_size='-O2'
4365         _flags_filter=cparser_flags
4366     fi
4367
4368     eval ${pfx}_type=\$_type
4369     eval ${pfx}_ident=\$_ident
4370 }
4371
4372 set_ccvars(){
4373     eval ${1}_C=\${_cc_c-\${${1}_C}}
4374     eval ${1}_E=\${_cc_e-\${${1}_E}}
4375     eval ${1}_O=\${_cc_o-\${${1}_O}}
4376
4377     if [ -n "$_depflags" ]; then
4378         eval ${1}_DEPFLAGS=\$_depflags
4379     else
4380         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4381         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4382         eval DEP${1}FLAGS=\$_flags
4383     fi
4384 }
4385
4386 probe_cc cc "$cc" "true"
4387 cflags_filter=$_flags_filter
4388 cflags_speed=$_cflags_speed
4389 cflags_size=$_cflags_size
4390 cflags_noopt=$_cflags_noopt
4391 add_cflags $_flags $_cflags
4392 cc_ldflags=$_ldflags
4393 set_ccvars CC
4394 set_ccvars CXX
4395
4396 probe_cc hostcc "$host_cc"
4397 host_cflags_filter=$_flags_filter
4398 host_cflags_speed=$_cflags_speed
4399 add_host_cflags  $_flags $_cflags
4400 set_ccvars HOSTCC
4401
4402 test -n "$cc_type" && enable $cc_type ||
4403     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4404
4405 : ${as_default:=$cc}
4406 : ${objcc_default:=$cc}
4407 : ${dep_cc_default:=$cc}
4408 : ${ld_default:=$cc}
4409 : ${host_ld_default:=$host_cc}
4410 set_default ar as objcc dep_cc ld ln_s host_ld windres
4411
4412 probe_cc as "$as"
4413 asflags_filter=$_flags_filter
4414 add_asflags $_flags $_cflags
4415 set_ccvars AS
4416
4417 probe_cc objcc "$objcc"
4418 objcflags_filter=$_flags_filter
4419 add_objcflags $_flags $_cflags
4420 set_ccvars OBJC
4421
4422 probe_cc ld "$ld"
4423 ldflags_filter=$_flags_filter
4424 add_ldflags $_flags $_ldflags
4425 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4426 LD_O=${_ld_o-$LD_O}
4427 LD_LIB=${_ld_lib-$LD_LIB}
4428 LD_PATH=${_ld_path-$LD_PATH}
4429
4430 probe_cc hostld "$host_ld"
4431 host_ldflags_filter=$_flags_filter
4432 add_host_ldflags $_flags $_ldflags
4433 HOSTLD_O=${_ld_o-$HOSTLD_O}
4434
4435 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4436     probe_cc depcc "$dep_cc"
4437     CCDEP=${_DEPCMD:-$DEPCMD}
4438     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4439     DEPCCFLAGS=$_flags
4440 fi
4441
4442 if $ar 2>&1 | grep -q Microsoft; then
4443     arflags="-nologo"
4444     ar_o='-out:$@'
4445 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4446     arflags="rq"
4447     ar_o='$@'
4448 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4449     arflags='-Xany -r -c'
4450     ar_o='$@'
4451 elif $ar 2>&1 | grep -q "\[D\] "; then
4452     arflags="rcD"
4453     ar_o='$@'
4454 else
4455     arflags="rc"
4456     ar_o='$@'
4457 fi
4458
4459 add_cflags $extra_cflags
4460 add_cxxflags $extra_cxxflags
4461 add_objcflags $extra_objcflags
4462 add_asflags $extra_cflags
4463
4464 if test -n "$sysroot"; then
4465     case "$cc_type" in
4466         gcc|llvm_gcc|clang)
4467             add_cppflags --sysroot="$sysroot"
4468             add_ldflags --sysroot="$sysroot"
4469         ;;
4470         tms470)
4471             add_cppflags -I"$sysinclude"
4472             add_ldflags  --sysroot="$sysroot"
4473         ;;
4474     esac
4475 fi
4476
4477 if test "$cpu" = host; then
4478     enabled cross_compile &&
4479         die "--cpu=host makes no sense when cross-compiling."
4480
4481     case "$cc_type" in
4482         gcc|llvm_gcc)
4483             check_native(){
4484                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4485                 sed -n "/cc1.*$1=/{
4486                             s/.*$1=\\([^ ]*\\).*/\\1/
4487                             p
4488                             q
4489                         }" $TMPE
4490             }
4491             cpu=$(check_native -march || check_native -mcpu)
4492         ;;
4493         clang)
4494             check_native(){
4495                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4496                 sed -n "/cc1.*-target-cpu /{
4497                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4498                             p
4499                             q
4500                         }" $TMPE
4501             }
4502             cpu=$(check_native -march)
4503         ;;
4504     esac
4505
4506     test "${cpu:-host}" = host &&
4507         die "--cpu=host not supported with compiler $cc"
4508 fi
4509
4510 # Deal with common $arch aliases
4511 case "$arch" in
4512     aarch64|arm64)
4513         arch="aarch64"
4514     ;;
4515     arm*|iPad*|iPhone*)
4516         arch="arm"
4517     ;;
4518     mips*|IP*)
4519         case "$arch" in
4520         *el)
4521             add_cppflags -EL
4522             add_ldflags -EL
4523         ;;
4524         *eb)
4525             add_cppflags -EB
4526             add_ldflags -EB
4527         ;;
4528         esac
4529         arch="mips"
4530     ;;
4531     parisc*|hppa*)
4532         arch="parisc"
4533     ;;
4534     "Power Macintosh"|ppc*|powerpc*)
4535         arch="ppc"
4536     ;;
4537     s390|s390x)
4538         arch="s390"
4539     ;;
4540     sh4|sh)
4541         arch="sh4"
4542     ;;
4543     sun4*|sparc*)
4544         arch="sparc"
4545     ;;
4546     tilegx|tile-gx)
4547         arch="tilegx"
4548     ;;
4549     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4550         arch="x86"
4551     ;;
4552 esac
4553
4554 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4555 enable $arch
4556
4557 # Add processor-specific flags
4558 if enabled aarch64; then
4559
4560     case $cpu in
4561         armv*)
4562             cpuflags="-march=$cpu"
4563         ;;
4564         *)
4565             cpuflags="-mcpu=$cpu"
4566         ;;
4567     esac
4568
4569 elif enabled alpha; then
4570
4571     cpuflags="-mcpu=$cpu"
4572
4573 elif enabled arm; then
4574
4575     check_arm_arch() {
4576         check_cpp_condition stddef.h \
4577             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4578             $cpuflags
4579     }
4580
4581     probe_arm_arch() {
4582         if   check_arm_arch 4;        then echo armv4
4583         elif check_arm_arch 4T;       then echo armv4t
4584         elif check_arm_arch 5;        then echo armv5
4585         elif check_arm_arch 5E;       then echo armv5e
4586         elif check_arm_arch 5T;       then echo armv5t
4587         elif check_arm_arch 5TE;      then echo armv5te
4588         elif check_arm_arch 5TEJ;     then echo armv5te
4589         elif check_arm_arch 6;        then echo armv6
4590         elif check_arm_arch 6J;       then echo armv6j
4591         elif check_arm_arch 6K;       then echo armv6k
4592         elif check_arm_arch 6Z;       then echo armv6z
4593         elif check_arm_arch 6ZK;      then echo armv6zk
4594         elif check_arm_arch 6T2;      then echo armv6t2
4595         elif check_arm_arch 7;        then echo armv7
4596         elif check_arm_arch 7A  7_A;  then echo armv7-a
4597         elif check_arm_arch 7S;       then echo armv7-a
4598         elif check_arm_arch 7R  7_R;  then echo armv7-r
4599         elif check_arm_arch 7M  7_M;  then echo armv7-m
4600         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4601         elif check_arm_arch 8A  8_A;  then echo armv8-a
4602         fi
4603     }
4604
4605     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4606
4607     case $cpu in
4608         armv*)
4609             cpuflags="-march=$cpu"
4610             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4611         ;;
4612         *)
4613             cpuflags="-mcpu=$cpu"
4614             case $cpu in
4615                 cortex-a*)                               subarch=armv7a  ;;
4616                 cortex-r*)                               subarch=armv7r  ;;
4617                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4618                 arm11*)                                  subarch=armv6   ;;
4619                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4620                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4621                 *)                             subarch=$(probe_arm_arch) ;;
4622             esac
4623         ;;
4624     esac
4625
4626     case "$subarch" in
4627         armv5t*)    enable fast_clz                ;;
4628         armv[6-8]*)
4629             enable fast_clz
4630             disabled fast_unaligned || enable fast_unaligned
4631             ;;
4632     esac
4633
4634 elif enabled avr32; then
4635
4636     case $cpu in
4637         ap7[02]0[0-2])
4638             subarch="avr32_ap"
4639             cpuflags="-mpart=$cpu"
4640         ;;
4641         ap)
4642             subarch="avr32_ap"
4643             cpuflags="-march=$cpu"
4644         ;;
4645         uc3[ab]*)
4646             subarch="avr32_uc"
4647             cpuflags="-mcpu=$cpu"
4648         ;;
4649         uc)
4650             subarch="avr32_uc"
4651             cpuflags="-march=$cpu"
4652         ;;
4653     esac
4654
4655 elif enabled bfin; then
4656
4657     cpuflags="-mcpu=$cpu"
4658
4659 elif enabled mips; then
4660
4661     cpuflags="-march=$cpu"
4662
4663     if [ "$cpu" != "generic" ]; then
4664         disable mips32r2
4665         disable mips32r5
4666         disable mips64r2
4667         disable mips32r6
4668         disable mips64r6
4669         disable loongson2
4670         disable loongson3
4671
4672         case $cpu in
4673             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4674                 enable mips32r2
4675                 disable msa
4676             ;;
4677             p5600|i6400|p6600)
4678                 disable mipsdsp
4679                 disable mipsdspr2
4680             ;;
4681             loongson*)
4682                 enable loongson2
4683                 enable loongson3
4684                 enable local_aligned
4685                 enable simd_align_16
4686                 enable fast_64bit
4687                 enable fast_clz
4688                 enable fast_cmov
4689                 enable fast_unaligned
4690                 disable aligned_stack
4691                 disable mipsfpu
4692                 disable mipsdsp
4693                 disable mipsdspr2
4694                 case $cpu in
4695                     loongson3*)
4696                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4697                     ;;
4698                     loongson2e)
4699                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4700                     ;;
4701                     loongson2f)
4702                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4703                     ;;
4704                 esac
4705             ;;
4706             *)
4707                 # Unknown CPU. Disable everything.
4708                 warn "unknown CPU. Disabling all MIPS optimizations."
4709                 disable mipsfpu
4710                 disable mipsdsp
4711                 disable mipsdspr2
4712                 disable msa
4713                 disable mmi
4714             ;;
4715         esac
4716
4717         case $cpu in
4718             24kc)
4719                 disable mipsfpu
4720                 disable mipsdsp
4721                 disable mipsdspr2
4722             ;;
4723             24kf*)
4724                 disable mipsdsp
4725                 disable mipsdspr2
4726             ;;
4727             24kec|34kc|1004kc)
4728                 disable mipsfpu
4729                 disable mipsdspr2
4730             ;;
4731             24kef*|34kf*|1004kf*)
4732                 disable mipsdspr2
4733             ;;
4734             74kc)
4735                 disable mipsfpu
4736             ;;
4737             p5600)
4738                 enable mips32r5
4739                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4740             ;;
4741             i6400)
4742                 enable mips64r6
4743                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4744             ;;
4745             p6600)
4746                 enable mips64r6
4747                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4748             ;;
4749         esac
4750     else
4751         # We do not disable anything. Is up to the user to disable the unwanted features.
4752         warn 'generic cpu selected'
4753     fi
4754
4755 elif enabled ppc; then
4756
4757     disable ldbrx
4758
4759     case $(tolower $cpu) in
4760         601|ppc601|powerpc601)
4761             cpuflags="-mcpu=601"
4762             disable altivec
4763         ;;
4764         603*|ppc603*|powerpc603*)
4765             cpuflags="-mcpu=603"
4766             disable altivec
4767         ;;
4768         604*|ppc604*|powerpc604*)
4769             cpuflags="-mcpu=604"
4770             disable altivec
4771         ;;
4772         g3|75*|ppc75*|powerpc75*)
4773             cpuflags="-mcpu=750"
4774             disable altivec
4775         ;;
4776         g4|745*|ppc745*|powerpc745*)
4777             cpuflags="-mcpu=7450"
4778             disable vsx
4779         ;;
4780         74*|ppc74*|powerpc74*)
4781             cpuflags="-mcpu=7400"
4782             disable vsx
4783         ;;
4784         g5|970|ppc970|powerpc970)
4785             cpuflags="-mcpu=970"
4786             disable vsx
4787         ;;
4788         power[3-6]*)
4789             cpuflags="-mcpu=$cpu"
4790             disable vsx
4791         ;;
4792         power[7-8]*)
4793             cpuflags="-mcpu=$cpu"
4794         ;;
4795         cell)
4796             cpuflags="-mcpu=cell"
4797             enable ldbrx
4798             disable vsx
4799         ;;
4800         e500mc)
4801             cpuflags="-mcpu=e500mc"
4802             disable altivec
4803         ;;
4804         e500v2)
4805             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4806             disable altivec
4807             disable dcbzl
4808         ;;
4809         e500)
4810             cpuflags="-mcpu=8540 -mhard-float"
4811             disable altivec
4812             disable dcbzl
4813         ;;
4814     esac
4815
4816 elif enabled sparc; then
4817
4818     case $cpu in
4819         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4820             cpuflags="-mcpu=$cpu"
4821         ;;
4822         ultrasparc*|niagara[234])
4823             cpuflags="-mcpu=$cpu"
4824         ;;
4825     esac
4826
4827 elif enabled x86; then
4828
4829     case $cpu in
4830         i[345]86|pentium)
4831             cpuflags="-march=$cpu"
4832             disable i686
4833             disable mmx
4834         ;;
4835         # targets that do NOT support nopl and conditional mov (cmov)
4836         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4837             cpuflags="-march=$cpu"
4838             disable i686
4839         ;;
4840         # targets that do support nopl and conditional mov (cmov)
4841         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4842         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4843         |amdfam10|barcelona|b[dt]ver*|znver*)
4844             cpuflags="-march=$cpu"
4845             enable i686
4846             enable fast_cmov
4847         ;;
4848         # targets that do support conditional mov but on which it's slow
4849         pentium4|pentium4m|prescott|nocona)
4850             cpuflags="-march=$cpu"
4851             enable i686
4852             disable fast_cmov
4853         ;;
4854     esac
4855
4856 fi
4857
4858 if [ "$cpu" != generic ]; then
4859     add_cflags  $cpuflags
4860     add_asflags $cpuflags
4861     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4862 fi
4863
4864 # compiler sanity check
4865 check_exec <<EOF
4866 int main(void){ return 0; }
4867 EOF
4868 if test "$?" != 0; then
4869     echo "$cc is unable to create an executable file."
4870     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4871         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4872         echo "Only do this if you know what cross compiling means."
4873     fi
4874     die "C compiler test failed."
4875 fi
4876
4877 add_cppflags -D_ISOC99_SOURCE
4878 add_cxxflags -D__STDC_CONSTANT_MACROS
4879 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4880
4881 # some compilers silently accept -std=c11, so we also need to check that the
4882 # version macro is defined properly
4883 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4884     add_cflags -std=c11 ||
4885     check_cflags -std=c99
4886
4887 check_cppflags -D_FILE_OFFSET_BITS=64
4888 check_cppflags -D_LARGEFILE_SOURCE
4889
4890 add_host_cppflags -D_ISOC99_SOURCE
4891 check_host_cflags -std=c99
4892 check_host_cflags -Wall
4893 check_host_cflags $host_cflags_speed
4894
4895 check_64bit(){
4896     arch32=$1
4897     arch64=$2
4898     expr=$3
4899     check_code cc "" "int test[2*($expr) - 1]" &&
4900         subarch=$arch64 || subarch=$arch32
4901 }
4902
4903 case "$arch" in
4904     aarch64|alpha|ia64)
4905         spic=$shared
4906     ;;
4907     mips)
4908         check_64bit mips mips64 '_MIPS_SIM > 1'
4909         spic=$shared
4910     ;;
4911     parisc)
4912         check_64bit parisc parisc64 'sizeof(void *) > 4'
4913         spic=$shared
4914     ;;
4915     ppc)
4916         check_64bit ppc ppc64 'sizeof(void *) > 4'
4917         spic=$shared
4918     ;;
4919     s390)
4920         check_64bit s390 s390x 'sizeof(void *) > 4'