Merge commit 'aba7fdcc8baaed35e804c7882b70a848a0e566c7'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --disable-jack           disable libjack support [autodetect]
221   --enable-jni             enable JNI support [no]
222   --enable-ladspa          enable LADSPA audio filtering [no]
223   --enable-libass          enable libass subtitles rendering,
224                            needed for subtitles and ass filter [no]
225   --enable-libbluray       enable BluRay reading using libbluray [no]
226   --enable-libbs2b         enable bs2b DSP library [no]
227   --enable-libcaca         enable textual display using libcaca [no]
228   --enable-libcelt         enable CELT decoding via libcelt [no]
229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
320   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
323
324 Toolchain options:
325   --arch=ARCH              select architecture [$arch]
326   --cpu=CPU                select the minimum required CPU (affects
327                            instruction selection, may crash on older CPUs)
328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
329   --progs-suffix=SUFFIX    program name suffix []
330   --enable-cross-compile   assume a cross-compiler is used
331   --sysroot=PATH           root of cross-build tree
332   --sysinclude=PATH        location of cross-build system headers
333   --target-os=OS           compiler targets OS [$target_os]
334   --target-exec=CMD        command to run executables on target
335   --target-path=DIR        path to view of build directory on target
336   --target-samples=DIR     path to samples directory on target
337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
338   --toolchain=NAME         set tool defaults according to NAME
339   --nm=NM                  use nm tool NM [$nm_default]
340   --ar=AR                  use archive tool AR [$ar_default]
341   --as=AS                  use assembler AS [$as_default]
342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
343   --strip=STRIP            use strip tool STRIP [$strip_default]
344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
346   --cc=CC                  use C compiler CC [$cc_default]
347   --cxx=CXX                use C compiler CXX [$cxx_default]
348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
351   --ld=LD                  use linker LD [$ld_default]
352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
356   --host-cc=HOSTCC         use host C compiler HOSTCC
357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
359   --host-ld=HOSTLD         use host linker HOSTLD
360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
361   --host-libs=HLIBS        use libs HLIBS when linking for host
362   --host-os=OS             compiler host OS [$target_os]
363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
370   --extra-version=STRING   version string suffix []
371   --optflags=OPTFLAGS      override optimization-related compiler flags
372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
373   --build-suffix=SUFFIX    library name suffix []
374   --enable-pic             build position-independent code
375   --enable-thumb           compile for Thumb instruction set
376   --enable-lto             use link-time optimization
377   --env="ENV=override"     override the environment variables
378
379 Advanced options (experts only):
380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
381   --custom-allocator=NAME  use a supported custom allocator
382   --disable-symver         disable symbol versioning
383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
384   --disable-safe-bitstream-reader
385                            disable buffer boundary checking in bitreaders
386                            (faster, but may crash)
387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
388
389 Optimization options (experts only):
390   --disable-asm            disable all assembly optimizations
391   --disable-altivec        disable AltiVec optimizations
392   --disable-vsx            disable VSX optimizations
393   --disable-power8         disable POWER8 optimizations
394   --disable-amd3dnow       disable 3DNow! optimizations
395   --disable-amd3dnowext    disable 3DNow! extended optimizations
396   --disable-mmx            disable MMX optimizations
397   --disable-mmxext         disable MMXEXT optimizations
398   --disable-sse            disable SSE optimizations
399   --disable-sse2           disable SSE2 optimizations
400   --disable-sse3           disable SSE3 optimizations
401   --disable-ssse3          disable SSSE3 optimizations
402   --disable-sse4           disable SSE4 optimizations
403   --disable-sse42          disable SSE4.2 optimizations
404   --disable-avx            disable AVX optimizations
405   --disable-xop            disable XOP optimizations
406   --disable-fma3           disable FMA3 optimizations
407   --disable-fma4           disable FMA4 optimizations
408   --disable-avx2           disable AVX2 optimizations
409   --disable-aesni          disable AESNI optimizations
410   --disable-armv5te        disable armv5te optimizations
411   --disable-armv6          disable armv6 optimizations
412   --disable-armv6t2        disable armv6t2 optimizations
413   --disable-vfp            disable VFP optimizations
414   --disable-neon           disable NEON optimizations
415   --disable-inline-asm     disable use of inline assembly
416   --disable-x86asm         disable use of standalone x86 assembly
417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
419   --disable-msa            disable MSA optimizations
420   --disable-mipsfpu        disable floating point MIPS optimizations
421   --disable-mmi            disable Loongson SIMD optimizations
422   --disable-fast-unaligned consider unaligned accesses slow
423
424 Developer options (useful when working on FFmpeg itself):
425   --disable-debug          disable debugging symbols
426   --enable-debug=LEVEL     set the debug level [$debuglevel]
427   --disable-optimizations  disable compiler optimizations
428   --enable-extra-warnings  enable more compiler warnings
429   --disable-stripping      disable stripping of executables and shared libraries
430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
431                            2 causes a slowdown at runtime.
432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
434                            leaks and errors, using the specified valgrind binary.
435                            Cannot be combined with --target-exec
436   --enable-ftrapv          Trap arithmetic overflows
437   --samples=PATH           location of test samples for FATE, if not set use
438                            \$FATE_SAMPLES at make invocation time.
439   --enable-neon-clobber-test check NEON registers for clobbering (should be
440                            used only for debugging purposes)
441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
442                            should be used only for debugging purposes)
443   --enable-random          randomly enable/disable components
444   --disable-random
445   --enable-random=LIST     randomly enable/disable specific components or
446   --disable-random=LIST    component groups. LIST is a comma-separated list
447                            of NAME[:PROB] entries where NAME is a component
448                            (group) and PROB the probability associated with
449                            NAME (default 0.5).
450   --random-seed=VALUE      seed value for --enable/disable-random
451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
452                            (only applies to --disable-optimizations builds)
453   --enable-osfuzz          Enable building fuzzer tool
454   --libfuzzer=PATH         path to libfuzzer
455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
456                            in the name) of tests whose result is ignored
457   --enable-linux-perf      enable Linux Performance Monitor API
458
459 NOTE: Object files are built at the place where configure is launched.
460 EOF
461   exit 0
462 }
463
464 quotes='""'
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case $v in $pat) printf '%s ' $v ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_safe(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_safe(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_safe(){
640     for var; do
641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
642     done
643 }
644
645 disable_safe(){
646     for var; do
647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op='=' || op=!=
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op='=' || op=!=
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op='=' || op=!=
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 do_check_deps(){
735     for cfg; do
736         cfg="${cfg#!}"
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740         append allopts $cfg
741
742         eval dep_all="\$${cfg}_deps"
743         eval dep_any="\$${cfg}_deps_any"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
750         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         if enabled $cfg; then
760             enable_deep $dep_sel
761             enable_deep_weak $dep_sgs
762         fi
763
764         disable ${cfg}_checking
765     done
766 }
767
768 check_deps(){
769     unset allopts
770
771     do_check_deps "$@"
772
773     for cfg in $allopts; do
774         enabled $cfg || continue
775         eval dep_extralibs="\$${cfg}_extralibs"
776         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
777     done
778 }
779
780 print_config(){
781     pfx=$1
782     files=$2
783     shift 2
784     map 'eval echo "$v \${$v:-no}"' "$@" |
785     awk "BEGIN { split(\"$files\", files) }
786         {
787             c = \"$pfx\" toupper(\$1);
788             v = \$2;
789             sub(/yes/, 1, v);
790             sub(/no/,  0, v);
791             for (f in files) {
792                 file = files[f];
793                 if (file ~ /\\.h\$/) {
794                     printf(\"#define %s %d\\n\", c, v) >>file;
795                 } else if (file ~ /\\.asm\$/) {
796                     printf(\"%%define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.mak\$/) {
798                     n = -v ? \"\" : \"!\";
799                     printf(\"%s%s=yes\\n\", n, c) >>file;
800                 } else if (file ~ /\\.texi\$/) {
801                     pre = -v ? \"\" : \"@c \";
802                     yesno = \$2;
803                     c2 = tolower(c);
804                     gsub(/_/, \"-\", c2);
805                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
806                 }
807             }
808         }"
809 }
810
811 print_enabled(){
812     suf=$1
813     shift
814     for v; do
815         enabled $v && printf "%s\n" ${v%$suf}
816     done
817 }
818
819 append(){
820     var=$1
821     shift
822     eval "$var=\"\$$var $*\""
823 }
824
825 prepend(){
826     var=$1
827     shift
828     eval "$var=\"$* \$$var\""
829 }
830
831 unique(){
832     var=$1
833     uniq_list=""
834     for tok in $(eval echo \$$var); do
835         uniq_list="$(filter_out $tok $uniq_list) $tok"
836     done
837     eval "$var=\"${uniq_list}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldlibflags(){
873     append LDLIBFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1137 }
1138
1139 check_func(){
1140     log check_func "$@"
1141     func=$1
1142     shift
1143     disable $func
1144     check_ld "cc" "$@" <<EOF && enable $func
1145 extern int $func();
1146 int main(void){ $func(); }
1147 EOF
1148 }
1149
1150 check_complexfunc(){
1151     log check_complexfunc "$@"
1152     func=$1
1153     narg=$2
1154     shift 2
1155     test $narg = 2 && args="f, g" || args="f * I"
1156     disable $func
1157     check_ld "cc" "$@" <<EOF && enable $func
1158 #include <complex.h>
1159 #include <math.h>
1160 float foo(complex float f, complex float g) { return $func($args); }
1161 int main(void){ return (int) foo; }
1162 EOF
1163 }
1164
1165 check_mathfunc(){
1166     log check_mathfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <math.h>
1174 float foo(float f, float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_func_headers(){
1180     log check_func_headers "$@"
1181     headers=$1
1182     funcs=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             print_include $hdr
1187         done
1188         echo "#include <stdint.h>"
1189         for func in $funcs; do
1190             echo "long check_$func(void) { return (long) $func; }"
1191         done
1192         echo "int main(void) { int ret = 0;"
1193         # LTO could optimize out the test functions without this
1194         for func in $funcs; do
1195             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1196         done
1197         echo "return ret; }"
1198     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_class_headers_cpp(){
1202     log check_class_headers_cpp "$@"
1203     headers=$1
1204     classes=$2
1205     shift 2
1206     {
1207         for hdr in $headers; do
1208             echo "#include <$hdr>"
1209         done
1210         echo "int main(void) { "
1211         i=1
1212         for class in $classes; do
1213             echo "$class obj$i;"
1214             i=$(expr $i + 1)
1215         done
1216         echo "return 0; }"
1217     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1218 }
1219
1220 check_cpp_condition(){
1221     log check_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 test_cflags_cc(){
1234     log test_cflags_cc "$@"
1235     flags=$1
1236     header=$2
1237     condition=$3
1238     shift 3
1239     set -- $($cflags_filter "$flags")
1240     check_cc "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_lib(){
1249     log check_lib "$@"
1250     name="$1"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     disable $name
1255     check_func_headers "$headers" "$funcs" "$@" &&
1256         enable $name && add_extralibs "$@"
1257 }
1258
1259 check_lib_cpp(){
1260     log check_lib_cpp "$@"
1261     headers="$1"
1262     classes="$2"
1263     shift 2
1264     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1265 }
1266
1267 check_pkg_config(){
1268     log check_pkg_config "$@"
1269     pkg_version="$1"
1270     pkg="${1%% *}"
1271     headers="$2"
1272     funcs="$3"
1273     shift 3
1274     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1275     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1276     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1277     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1278         set_safe "${pkg}_cflags"    $pkg_cflags &&
1279         set_safe "${pkg}_extralibs" $pkg_libs
1280 }
1281
1282 check_exec(){
1283     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1284 }
1285
1286 check_exec_crash(){
1287     log check_exec_crash "$@"
1288     code=$(cat)
1289
1290     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1291     # are safe but may not be available everywhere.  Thus we use
1292     # raise(SIGTERM) instead.  The check is run in a subshell so we
1293     # can redirect the "Terminated" message from the shell.  SIGBUS
1294     # is not defined by standard C so it is used conditionally.
1295
1296     (check_exec "$@") >> $logfile 2>&1 <<EOF
1297 #include <signal.h>
1298 static void sighandler(int sig){
1299     raise(SIGTERM);
1300 }
1301 int foo(void){
1302     $code
1303 }
1304 int (*func_ptr)(void) = foo;
1305 int main(void){
1306     signal(SIGILL, sighandler);
1307     signal(SIGFPE, sighandler);
1308     signal(SIGSEGV, sighandler);
1309 #ifdef SIGBUS
1310     signal(SIGBUS, sighandler);
1311 #endif
1312     return func_ptr();
1313 }
1314 EOF
1315 }
1316
1317 check_type(){
1318     log check_type "$@"
1319     headers=$1
1320     type=$2
1321     shift 2
1322     disable_safe "$type"
1323     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1324 }
1325
1326 check_struct(){
1327     log check_struct "$@"
1328     headers=$1
1329     struct=$2
1330     member=$3
1331     shift 3
1332     disable_safe "${struct}_${member}"
1333     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1334         enable_safe "${struct}_${member}"
1335 }
1336
1337 check_builtin(){
1338     log check_builtin "$@"
1339     name=$1
1340     headers=$2
1341     builtin=$3
1342     shift 3
1343     disable "$name"
1344     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1345 }
1346
1347 check_compile_assert(){
1348     log check_compile_assert "$@"
1349     name=$1
1350     headers=$2
1351     condition=$3
1352     shift 3
1353     disable "$name"
1354     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1355 }
1356
1357 require(){
1358     log require "$@"
1359     name_version="$1"
1360     name="${1%% *}"
1361     headers="$2"
1362     func="$3"
1363     shift 3
1364     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1365 }
1366
1367 require_cpp(){
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1373 }
1374
1375 require_header(){
1376     log require "$@"
1377     header="$1"
1378     shift
1379     check_header "$header" "$@" || die "ERROR: $header header not found"
1380 }
1381
1382 use_pkg_config(){
1383     log use_pkg_config "$@"
1384     pkg="$1"
1385     check_pkg_config "$@" || return 1
1386     add_cflags    $(get_safe "${pkg}_cflags")
1387     add_extralibs $(get_safe "${pkg}_extralibs")
1388 }
1389
1390 require_pkg_config(){
1391     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1392 }
1393
1394 hostcc_e(){
1395     eval printf '%s\\n' $HOSTCC_E
1396 }
1397
1398 hostcc_o(){
1399     eval printf '%s\\n' $HOSTCC_O
1400 }
1401
1402 check_host_cc(){
1403     log check_host_cc "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1407 }
1408
1409 check_host_cpp(){
1410     log check_host_cpp "$@"
1411     cat > $TMPC
1412     log_file $TMPC
1413     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1414 }
1415
1416 check_host_cppflags(){
1417     log check_host_cppflags "$@"
1418     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1419 int x;
1420 EOF
1421 }
1422
1423 check_host_cflags(){
1424     log check_host_cflags "$@"
1425     set -- $($host_cflags_filter "$@")
1426     check_host_cc "$@" <<EOF && append host_cflags "$@"
1427 int x;
1428 EOF
1429 }
1430
1431 check_host_cpp_condition(){
1432     log check_host_cpp_condition "$@"
1433     header=$1
1434     condition=$2
1435     shift 2
1436     check_host_cpp "$@" <<EOF
1437 #include <$header>
1438 #if !($condition)
1439 #error "unsatisfied condition: $condition"
1440 #endif
1441 EOF
1442 }
1443
1444 cp_if_changed(){
1445     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1446     mkdir -p "$(dirname $2)"
1447     cp -f "$1" "$2"
1448 }
1449
1450 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1451 # system-dependent things.
1452
1453 AVCODEC_COMPONENTS="
1454     bsfs
1455     decoders
1456     encoders
1457     hwaccels
1458     parsers
1459 "
1460
1461 AVDEVICE_COMPONENTS="
1462     indevs
1463     outdevs
1464 "
1465
1466 AVFILTER_COMPONENTS="
1467     filters
1468 "
1469
1470 AVFORMAT_COMPONENTS="
1471     demuxers
1472     muxers
1473     protocols
1474 "
1475
1476 AVRESAMPLE_COMPONENTS=""
1477
1478 AVUTIL_COMPONENTS=""
1479
1480 COMPONENT_LIST="
1481     $AVCODEC_COMPONENTS
1482     $AVDEVICE_COMPONENTS
1483     $AVFILTER_COMPONENTS
1484     $AVFORMAT_COMPONENTS
1485     $AVRESAMPLE_COMPONENTS
1486     $AVUTIL_COMPONENTS
1487 "
1488
1489 EXAMPLE_LIST="
1490     avio_dir_cmd_example
1491     avio_reading_example
1492     decode_audio_example
1493     decode_video_example
1494     demuxing_decoding_example
1495     encode_audio_example
1496     encode_video_example
1497     extract_mvs_example
1498     filter_audio_example
1499     filtering_audio_example
1500     filtering_video_example
1501     http_multiclient_example
1502     hw_decode_example
1503     metadata_example
1504     muxing_example
1505     qsvdec_example
1506     remuxing_example
1507     resampling_audio_example
1508     scaling_video_example
1509     transcode_aac_example
1510     transcoding_example
1511 "
1512
1513 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1514     alsa
1515     appkit
1516     avfoundation
1517     bzlib
1518     coreimage
1519     iconv
1520     jack
1521     libxcb
1522     libxcb_shm
1523     libxcb_shape
1524     libxcb_xfixes
1525     lzma
1526     schannel
1527     sdl2
1528     securetransport
1529     sndio
1530     xlib
1531     zlib
1532 "
1533
1534 EXTERNAL_LIBRARY_GPL_LIST="
1535     avisynth
1536     frei0r
1537     libcdio
1538     librubberband
1539     libvidstab
1540     libx264
1541     libx265
1542     libxavs
1543     libxvid
1544 "
1545
1546 EXTERNAL_LIBRARY_NONFREE_LIST="
1547     decklink
1548     libndi_newtek
1549     libfdk_aac
1550     openssl
1551 "
1552
1553 EXTERNAL_LIBRARY_VERSION3_LIST="
1554     gmp
1555     libopencore_amrnb
1556     libopencore_amrwb
1557     libvo_amrwbenc
1558 "
1559
1560 EXTERNAL_LIBRARY_GPLV3_LIST="
1561     libsmbclient
1562 "
1563
1564 EXTERNAL_LIBRARY_LIST="
1565     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1566     $EXTERNAL_LIBRARY_GPL_LIST
1567     $EXTERNAL_LIBRARY_NONFREE_LIST
1568     $EXTERNAL_LIBRARY_VERSION3_LIST
1569     $EXTERNAL_LIBRARY_GPLV3_LIST
1570     chromaprint
1571     gcrypt
1572     gnutls
1573     jni
1574     ladspa
1575     libass
1576     libbluray
1577     libbs2b
1578     libcaca
1579     libcelt
1580     libdc1394
1581     libdrm
1582     libflite
1583     libfontconfig
1584     libfreetype
1585     libfribidi
1586     libgme
1587     libgsm
1588     libiec61883
1589     libilbc
1590     libkvazaar
1591     libmodplug
1592     libmp3lame
1593     libmysofa
1594     libopencv
1595     libopenh264
1596     libopenjpeg
1597     libopenmpt
1598     libopus
1599     libpulse
1600     librsvg
1601     librtmp
1602     libshine
1603     libsmbclient
1604     libsnappy
1605     libsoxr
1606     libspeex
1607     libssh
1608     libtesseract
1609     libtheora
1610     libtwolame
1611     libv4l2
1612     libvmaf
1613     libvorbis
1614     libvpx
1615     libwavpack
1616     libwebp
1617     libxml2
1618     libzimg
1619     libzmq
1620     libzvbi
1621     mediacodec
1622     openal
1623     opencl
1624     opengl
1625 "
1626
1627 HWACCEL_AUTODETECT_LIBRARY_LIST="
1628     audiotoolbox
1629     crystalhd
1630     cuda
1631     cuvid
1632     d3d11va
1633     dxva2
1634     nvenc
1635     vaapi
1636     vda
1637     vdpau
1638     videotoolbox
1639     v4l2_m2m
1640     xvmc
1641 "
1642
1643 HWACCEL_LIBRARY_NONFREE_LIST="
1644     cuda_sdk
1645     libnpp
1646 "
1647
1648 HWACCEL_LIBRARY_LIST="
1649     $HWACCEL_AUTODETECT_LIBRARY_LIST
1650     $HWACCEL_LIBRARY_NONFREE_LIST
1651     libmfx
1652     mmal
1653     omx
1654 "
1655
1656 DOCUMENT_LIST="
1657     doc
1658     htmlpages
1659     manpages
1660     podpages
1661     txtpages
1662 "
1663
1664 FEATURE_LIST="
1665     ftrapv
1666     gray
1667     hardcoded_tables
1668     omx_rpi
1669     runtime_cpudetect
1670     safe_bitstream_reader
1671     shared
1672     small
1673     static
1674     swscale_alpha
1675 "
1676
1677 LIBRARY_LIST="
1678     avcodec
1679     avdevice
1680     avfilter
1681     avformat
1682     avresample
1683     avutil
1684     postproc
1685     swresample
1686     swscale
1687 "
1688
1689 LICENSE_LIST="
1690     gpl
1691     nonfree
1692     version3
1693 "
1694
1695 PROGRAM_LIST="
1696     ffplay
1697     ffprobe
1698     ffserver
1699     ffmpeg
1700 "
1701
1702 SUBSYSTEM_LIST="
1703     dct
1704     dwt
1705     error_resilience
1706     faan
1707     fast_unaligned
1708     fft
1709     lsp
1710     lzo
1711     mdct
1712     pixelutils
1713     network
1714     rdft
1715 "
1716
1717 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1718 CONFIG_LIST="
1719     $DOCUMENT_LIST
1720     $EXAMPLE_LIST
1721     $EXTERNAL_LIBRARY_LIST
1722     $HWACCEL_LIBRARY_LIST
1723     $FEATURE_LIST
1724     $LICENSE_LIST
1725     $LIBRARY_LIST
1726     $PROGRAM_LIST
1727     $SUBSYSTEM_LIST
1728     autodetect
1729     fontconfig
1730     linux_perf
1731     memory_poisoning
1732     neon_clobber_test
1733     ossfuzz
1734     pic
1735     thumb
1736     valgrind_backtrace
1737     xmm_clobber_test
1738     $COMPONENT_LIST
1739 "
1740
1741 THREADS_LIST="
1742     pthreads
1743     os2threads
1744     w32threads
1745 "
1746
1747 ATOMICS_LIST="
1748     atomics_gcc
1749     atomics_suncc
1750     atomics_win32
1751 "
1752
1753 AUTODETECT_LIBS="
1754     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1755     $HWACCEL_AUTODETECT_LIBRARY_LIST
1756     $THREADS_LIST
1757 "
1758
1759 ARCH_LIST="
1760     aarch64
1761     alpha
1762     arm
1763     avr32
1764     avr32_ap
1765     avr32_uc
1766     bfin
1767     ia64
1768     m68k
1769     mips
1770     mips64
1771     parisc
1772     ppc
1773     ppc64
1774     s390
1775     sh4
1776     sparc
1777     sparc64
1778     tilegx
1779     tilepro
1780     tomi
1781     x86
1782     x86_32
1783     x86_64
1784 "
1785
1786 ARCH_EXT_LIST_ARM="
1787     armv5te
1788     armv6
1789     armv6t2
1790     armv8
1791     neon
1792     vfp
1793     vfpv3
1794     setend
1795 "
1796
1797 ARCH_EXT_LIST_MIPS="
1798     mipsfpu
1799     mips32r2
1800     mips32r5
1801     mips64r2
1802     mips32r6
1803     mips64r6
1804     mipsdsp
1805     mipsdspr2
1806     msa
1807 "
1808
1809 ARCH_EXT_LIST_LOONGSON="
1810     loongson2
1811     loongson3
1812     mmi
1813 "
1814
1815 ARCH_EXT_LIST_X86_SIMD="
1816     aesni
1817     amd3dnow
1818     amd3dnowext
1819     avx
1820     avx2
1821     fma3
1822     fma4
1823     mmx
1824     mmxext
1825     sse
1826     sse2
1827     sse3
1828     sse4
1829     sse42
1830     ssse3
1831     xop
1832 "
1833
1834 ARCH_EXT_LIST_PPC="
1835     altivec
1836     dcbzl
1837     ldbrx
1838     power8
1839     ppc4xx
1840     vsx
1841 "
1842
1843 ARCH_EXT_LIST_X86="
1844     $ARCH_EXT_LIST_X86_SIMD
1845     cpunop
1846     i686
1847 "
1848
1849 ARCH_EXT_LIST="
1850     $ARCH_EXT_LIST_ARM
1851     $ARCH_EXT_LIST_PPC
1852     $ARCH_EXT_LIST_X86
1853     $ARCH_EXT_LIST_MIPS
1854     $ARCH_EXT_LIST_LOONGSON
1855 "
1856
1857 ARCH_FEATURES="
1858     aligned_stack
1859     fast_64bit
1860     fast_clz
1861     fast_cmov
1862     local_aligned_8
1863     local_aligned_16
1864     local_aligned_32
1865     simd_align_16
1866     simd_align_32
1867 "
1868
1869 BUILTIN_LIST="
1870     atomic_cas_ptr
1871     machine_rw_barrier
1872     MemoryBarrier
1873     mm_empty
1874     rdtsc
1875     sarestart
1876     sem_timedwait
1877     sync_val_compare_and_swap
1878 "
1879 HAVE_LIST_CMDLINE="
1880     inline_asm
1881     symver
1882     x86asm
1883 "
1884
1885 HAVE_LIST_PUB="
1886     bigendian
1887     fast_unaligned
1888 "
1889
1890 HEADERS_LIST="
1891     altivec_h
1892     arpa_inet_h
1893     asm_types_h
1894     cdio_paranoia_h
1895     cdio_paranoia_paranoia_h
1896     cuda_h
1897     d3d11_h
1898     dispatch_dispatch_h
1899     dev_bktr_ioctl_bt848_h
1900     dev_bktr_ioctl_meteor_h
1901     dev_ic_bt8xx_h
1902     dev_video_bktr_ioctl_bt848_h
1903     dev_video_meteor_ioctl_meteor_h
1904     direct_h
1905     dirent_h
1906     dlfcn_h
1907     dxgidebug_h
1908     dxva_h
1909     ES2_gl_h
1910     gsm_h
1911     io_h
1912     mach_mach_time_h
1913     machine_ioctl_bt848_h
1914     machine_ioctl_meteor_h
1915     malloc_h
1916     opencv2_core_core_c_h
1917     openjpeg_2_2_openjpeg_h
1918     openjpeg_2_1_openjpeg_h
1919     openjpeg_2_0_openjpeg_h
1920     openjpeg_1_5_openjpeg_h
1921     OpenGL_gl3_h
1922     poll_h
1923     soundcard_h
1924     stdatomic_h
1925     sys_mman_h
1926     sys_param_h
1927     sys_resource_h
1928     sys_select_h
1929     sys_soundcard_h
1930     sys_time_h
1931     sys_un_h
1932     sys_videoio_h
1933     termios_h
1934     udplite_h
1935     unistd_h
1936     valgrind_valgrind_h
1937     windows_h
1938     winsock2_h
1939 "
1940
1941 INTRINSICS_LIST="
1942     intrinsics_neon
1943 "
1944
1945 COMPLEX_FUNCS="
1946     cabs
1947     cexp
1948 "
1949
1950 MATH_FUNCS="
1951     atanf
1952     atan2f
1953     cbrt
1954     cbrtf
1955     copysign
1956     cosf
1957     erf
1958     exp2
1959     exp2f
1960     expf
1961     hypot
1962     isfinite
1963     isinf
1964     isnan
1965     ldexpf
1966     llrint
1967     llrintf
1968     log2
1969     log2f
1970     log10f
1971     lrint
1972     lrintf
1973     powf
1974     rint
1975     round
1976     roundf
1977     sinf
1978     trunc
1979     truncf
1980 "
1981
1982 SYSTEM_FUNCS="
1983     access
1984     aligned_malloc
1985     arc4random
1986     clock_gettime
1987     closesocket
1988     CommandLineToArgvW
1989     CoTaskMemFree
1990     CryptGenRandom
1991     dlopen
1992     fcntl
1993     flt_lim
1994     fork
1995     getaddrinfo
1996     gethrtime
1997     getopt
1998     GetProcessAffinityMask
1999     GetProcessMemoryInfo
2000     GetProcessTimes
2001     getrusage
2002     GetSystemTimeAsFileTime
2003     gettimeofday
2004     glob
2005     glXGetProcAddress
2006     gmtime_r
2007     inet_aton
2008     isatty
2009     jack_port_get_latency_range
2010     kbhit
2011     LoadLibrary
2012     localtime_r
2013     lstat
2014     lzo1x_999_compress
2015     mach_absolute_time
2016     MapViewOfFile
2017     memalign
2018     mkstemp
2019     mmap
2020     mprotect
2021     nanosleep
2022     PeekNamedPipe
2023     posix_memalign
2024     pthread_cancel
2025     sched_getaffinity
2026     SetConsoleTextAttribute
2027     SetConsoleCtrlHandler
2028     setmode
2029     setrlimit
2030     Sleep
2031     strerror_r
2032     sysconf
2033     sysctl
2034     usleep
2035     UTGetOSTypeFromString
2036     VirtualAlloc
2037     wglGetProcAddress
2038 "
2039
2040 TOOLCHAIN_FEATURES="
2041     as_dn_directive
2042     as_fpu_directive
2043     as_func
2044     as_object_arch
2045     asm_mod_q
2046     attribute_may_alias
2047     attribute_packed
2048     blocks_extension
2049     ebp_available
2050     ebx_available
2051     gnu_as
2052     gnu_windres
2053     ibm_asm
2054     inline_asm_direct_symbol_refs
2055     inline_asm_labels
2056     inline_asm_nonlocal_labels
2057     pragma_deprecated
2058     rsync_contimeout
2059     symver_asm_label
2060     symver_gnu_asm
2061     vfp_args
2062     xform_asm
2063     xmm_clobbers
2064 "
2065
2066 TYPES_LIST="
2067     CONDITION_VARIABLE_Ptr
2068     socklen_t
2069     struct_addrinfo
2070     struct_group_source_req
2071     struct_ip_mreq_source
2072     struct_ipv6_mreq
2073     struct_msghdr_msg_flags
2074     struct_pollfd
2075     struct_rusage_ru_maxrss
2076     struct_sctp_event_subscribe
2077     struct_sockaddr_in6
2078     struct_sockaddr_sa_len
2079     struct_sockaddr_storage
2080     struct_stat_st_mtim_tv_nsec
2081     struct_v4l2_frmivalenum_discrete
2082 "
2083
2084 HAVE_LIST="
2085     $ARCH_EXT_LIST
2086     $(add_suffix _external $ARCH_EXT_LIST)
2087     $(add_suffix _inline   $ARCH_EXT_LIST)
2088     $ARCH_FEATURES
2089     $ATOMICS_LIST
2090     $BUILTIN_LIST
2091     $COMPLEX_FUNCS
2092     $HAVE_LIST_CMDLINE
2093     $HAVE_LIST_PUB
2094     $HEADERS_LIST
2095     $INTRINSICS_LIST
2096     $MATH_FUNCS
2097     $SYSTEM_FUNCS
2098     $THREADS_LIST
2099     $TOOLCHAIN_FEATURES
2100     $TYPES_LIST
2101     atomics_native
2102     dos_paths
2103     libc_msvcrt
2104     makeinfo
2105     makeinfo_html
2106     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2107     perl
2108     pod2man
2109     section_data_rel_ro
2110     texi2html
2111     threads
2112     uwp
2113     vaapi_drm
2114     vaapi_x11
2115     vdpau_x11
2116     winrt
2117 "
2118
2119 # options emitted with CONFIG_ prefix but not available on the command line
2120 CONFIG_EXTRA="
2121     aandcttables
2122     ac3dsp
2123     audio_frame_queue
2124     audiodsp
2125     blockdsp
2126     bswapdsp
2127     cabac
2128     dirac_parse
2129     dvprofile
2130     exif
2131     faandct
2132     faanidct
2133     fdctdsp
2134     flacdsp
2135     fmtconvert
2136     frame_thread_encoder
2137     g722dsp
2138     golomb
2139     gplv3
2140     h263dsp
2141     h264chroma
2142     h264dsp
2143     h264parse
2144     h264pred
2145     h264qpel
2146     hevcparse
2147     hpeldsp
2148     huffman
2149     huffyuvdsp
2150     huffyuvencdsp
2151     idctdsp
2152     iirfilter
2153     mdct15
2154     intrax8
2155     iso_media
2156     ividsp
2157     jpegtables
2158     lgplv3
2159     libx262
2160     llauddsp
2161     llviddsp
2162     llvidencdsp
2163     lpc
2164     lzf
2165     me_cmp
2166     mpeg_er
2167     mpegaudio
2168     mpegaudiodsp
2169     mpegaudioheader
2170     mpegvideo
2171     mpegvideoenc
2172     mss34dsp
2173     pixblockdsp
2174     qpeldsp
2175     qsv
2176     qsvdec
2177     qsvenc
2178     rangecoder
2179     riffdec
2180     riffenc
2181     rtpdec
2182     rtpenc_chain
2183     rv34dsp
2184     sinewin
2185     snappy
2186     srtp
2187     startcode
2188     texturedsp
2189     texturedspenc
2190     tpeldsp
2191     vaapi_encode
2192     vc1dsp
2193     videodsp
2194     vp3dsp
2195     vp56dsp
2196     vp8dsp
2197     wma_freqs
2198     wmv2dsp
2199 "
2200
2201 CMDLINE_SELECT="
2202     $ARCH_EXT_LIST
2203     $CONFIG_LIST
2204     $HAVE_LIST_CMDLINE
2205     $THREADS_LIST
2206     asm
2207     cross_compile
2208     debug
2209     extra_warnings
2210     logging
2211     lto
2212     optimizations
2213     rpath
2214     stripping
2215 "
2216
2217 PATHS_LIST="
2218     bindir
2219     datadir
2220     docdir
2221     incdir
2222     libdir
2223     mandir
2224     pkgconfigdir
2225     prefix
2226     shlibdir
2227     install_name_dir
2228 "
2229
2230 CMDLINE_SET="
2231     $PATHS_LIST
2232     ar
2233     arch
2234     as
2235     assert_level
2236     build_suffix
2237     cc
2238     objcc
2239     cpu
2240     cross_prefix
2241     custom_allocator
2242     cxx
2243     dep_cc
2244     doxygen
2245     env
2246     extra_version
2247     gas
2248     host_cc
2249     host_cflags
2250     host_extralibs
2251     host_ld
2252     host_ldflags
2253     host_os
2254     ignore_tests
2255     install
2256     ld
2257     ln_s
2258     logfile
2259     malloc_prefix
2260     nm
2261     optflags
2262     nvccflags
2263     pkg_config
2264     pkg_config_flags
2265     progs_suffix
2266     random_seed
2267     ranlib
2268     samples
2269     strip
2270     sws_max_filter_size
2271     sysinclude
2272     sysroot
2273     target_exec
2274     target_os
2275     target_path
2276     target_samples
2277     tempprefix
2278     toolchain
2279     valgrind
2280     x86asmexe
2281 "
2282
2283 CMDLINE_APPEND="
2284     extra_cflags
2285     extra_cxxflags
2286     extra_objcflags
2287     host_cppflags
2288 "
2289
2290 # code dependency declarations
2291
2292 # architecture extensions
2293
2294 armv5te_deps="arm"
2295 armv6_deps="arm"
2296 armv6t2_deps="arm"
2297 armv8_deps="aarch64"
2298 neon_deps_any="aarch64 arm"
2299 intrinsics_neon_deps="neon"
2300 vfp_deps_any="aarch64 arm"
2301 vfpv3_deps="vfp"
2302 setend_deps="arm"
2303
2304 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2305
2306 loongson2_deps="mips"
2307 loongson3_deps="mips"
2308 mipsfpu_deps="mips"
2309 mipsdsp_deps="mips"
2310 mipsdspr2_deps="mips"
2311 mips32r2_deps="mips"
2312 mips32r5_deps="mips"
2313 mips32r6_deps="mips"
2314 mips64r2_deps="mips"
2315 mips64r6_deps="mips"
2316 msa_deps="mipsfpu"
2317 mmi_deps="mips"
2318
2319 altivec_deps="ppc"
2320 dcbzl_deps="ppc"
2321 ldbrx_deps="ppc"
2322 ppc4xx_deps="ppc"
2323 vsx_deps="altivec"
2324 power8_deps="vsx"
2325
2326 cpunop_deps="i686"
2327 x86_64_select="i686"
2328 x86_64_suggest="fast_cmov"
2329
2330 amd3dnow_deps="mmx"
2331 amd3dnowext_deps="amd3dnow"
2332 i686_deps="x86"
2333 mmx_deps="x86"
2334 mmxext_deps="mmx"
2335 sse_deps="mmxext"
2336 sse2_deps="sse"
2337 sse3_deps="sse2"
2338 ssse3_deps="sse3"
2339 sse4_deps="ssse3"
2340 sse42_deps="sse4"
2341 aesni_deps="sse42"
2342 avx_deps="sse42"
2343 xop_deps="avx"
2344 fma3_deps="avx"
2345 fma4_deps="avx"
2346 avx2_deps="avx"
2347
2348 mmx_external_deps="x86asm"
2349 mmx_inline_deps="inline_asm"
2350 mmx_suggest="mmx_external mmx_inline"
2351
2352 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2353     eval dep=\$${ext}_deps
2354     eval ${ext}_external_deps='"${dep}_external"'
2355     eval ${ext}_inline_deps='"${dep}_inline"'
2356     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2357 done
2358
2359 aligned_stack_if_any="aarch64 ppc x86"
2360 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2361 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2362 fast_unaligned_if_any="aarch64 ppc x86"
2363 simd_align_16_if_any="altivec neon sse"
2364 simd_align_32_if_any="avx"
2365
2366 # system capabilities
2367 symver_if_any="symver_asm_label symver_gnu_asm"
2368 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2369
2370 # threading support
2371 atomics_gcc_if="sync_val_compare_and_swap"
2372 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2373 atomics_win32_if="MemoryBarrier"
2374 atomics_native_if_any="$ATOMICS_LIST"
2375 w32threads_deps="atomics_native"
2376 threads_if_any="$THREADS_LIST"
2377
2378 # subsystems
2379 dct_select="rdft"
2380 dirac_parse_select="golomb"
2381 error_resilience_select="me_cmp"
2382 faandct_deps="faan fdctdsp"
2383 faanidct_deps="faan idctdsp"
2384 h264dsp_select="startcode"
2385 hevcparse_select="golomb"
2386 frame_thread_encoder_deps="encoders threads"
2387 intrax8_select="blockdsp idctdsp"
2388 mdct_select="fft"
2389 mdct15_select="fft"
2390 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2391 mpeg_er_select="error_resilience"
2392 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2393 mpegaudiodsp_select="dct"
2394 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2395 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2396 vc1dsp_select="h264chroma qpeldsp startcode"
2397 rdft_select="fft"
2398
2399 # decoders / encoders
2400 aac_decoder_select="mdct15 mdct sinewin"
2401 aac_fixed_decoder_select="mdct sinewin"
2402 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2403 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2404 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2405 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2406 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2407 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2408 adpcm_g722_decoder_select="g722dsp"
2409 adpcm_g722_encoder_select="g722dsp"
2410 aic_decoder_select="golomb idctdsp"
2411 alac_encoder_select="lpc"
2412 als_decoder_select="bswapdsp"
2413 amrnb_decoder_select="lsp"
2414 amrwb_decoder_select="lsp"
2415 amv_decoder_select="sp5x_decoder exif"
2416 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2417 ape_decoder_select="bswapdsp llauddsp"
2418 apng_decoder_select="zlib"
2419 apng_encoder_select="llvidencdsp zlib"
2420 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2421 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2422 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2423 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2424 atrac1_decoder_select="mdct sinewin"
2425 atrac3_decoder_select="mdct"
2426 atrac3p_decoder_select="mdct sinewin"
2427 avrn_decoder_select="exif jpegtables"
2428 bink_decoder_select="blockdsp hpeldsp"
2429 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2430 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2431 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2432 clearvideo_decoder_select="idctdsp"
2433 cllc_decoder_select="bswapdsp"
2434 comfortnoise_encoder_select="lpc"
2435 cook_decoder_select="audiodsp mdct sinewin"
2436 cscd_decoder_select="lzo"
2437 cscd_decoder_suggest="zlib"
2438 dca_decoder_select="mdct"
2439 dds_decoder_select="texturedsp"
2440 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2441 dnxhd_decoder_select="blockdsp idctdsp"
2442 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2443 dolby_e_decoder_select="mdct"
2444 dvvideo_decoder_select="dvprofile idctdsp"
2445 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2446 dxa_decoder_select="zlib"
2447 dxv_decoder_select="lzf texturedsp"
2448 eac3_decoder_select="ac3_decoder"
2449 eac3_encoder_select="ac3_encoder"
2450 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2451 eatgq_decoder_select="aandcttables"
2452 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2453 exr_decoder_select="zlib"
2454 ffv1_decoder_select="rangecoder"
2455 ffv1_encoder_select="rangecoder"
2456 ffvhuff_decoder_select="huffyuv_decoder"
2457 ffvhuff_encoder_select="huffyuv_encoder"
2458 fic_decoder_select="golomb"
2459 flac_decoder_select="flacdsp"
2460 flac_encoder_select="bswapdsp flacdsp lpc"
2461 flashsv2_decoder_select="zlib"
2462 flashsv2_encoder_select="zlib"
2463 flashsv_decoder_select="zlib"
2464 flashsv_encoder_select="zlib"
2465 flv_decoder_select="h263_decoder"
2466 flv_encoder_select="h263_encoder"
2467 fourxm_decoder_select="blockdsp bswapdsp"
2468 fraps_decoder_select="bswapdsp huffman"
2469 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2470 g729_decoder_select="audiodsp"
2471 h261_decoder_select="mpegvideo"
2472 h261_encoder_select="aandcttables mpegvideoenc"
2473 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2474 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2475 h263i_decoder_select="h263_decoder"
2476 h263p_decoder_select="h263_decoder"
2477 h263p_encoder_select="h263_encoder"
2478 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2479 h264_decoder_suggest="error_resilience"
2480 hap_decoder_select="snappy texturedsp"
2481 hap_encoder_deps="libsnappy"
2482 hap_encoder_select="texturedspenc"
2483 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2484 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2485 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2486 iac_decoder_select="imc_decoder"
2487 imc_decoder_select="bswapdsp fft mdct sinewin"
2488 indeo3_decoder_select="hpeldsp"
2489 indeo4_decoder_select="ividsp"
2490 indeo5_decoder_select="ividsp"
2491 interplay_video_decoder_select="hpeldsp"
2492 jpegls_decoder_select="mjpeg_decoder"
2493 jv_decoder_select="blockdsp"
2494 lagarith_decoder_select="llviddsp"
2495 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2496 magicyuv_decoder_select="llviddsp"
2497 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2498 metasound_decoder_select="lsp mdct sinewin"
2499 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2500 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2501 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2502 mjpegb_decoder_select="mjpeg_decoder"
2503 mlp_decoder_select="mlp_parser"
2504 mlp_encoder_select="lpc"
2505 motionpixels_decoder_select="bswapdsp"
2506 mp1_decoder_select="mpegaudio"
2507 mp1float_decoder_select="mpegaudio"
2508 mp2_decoder_select="mpegaudio"
2509 mp2float_decoder_select="mpegaudio"
2510 mp3_decoder_select="mpegaudio"
2511 mp3adu_decoder_select="mpegaudio"
2512 mp3adufloat_decoder_select="mpegaudio"
2513 mp3float_decoder_select="mpegaudio"
2514 mp3on4_decoder_select="mpegaudio"
2515 mp3on4float_decoder_select="mpegaudio"
2516 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2517 mpc8_decoder_select="mpegaudiodsp"
2518 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2519 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2520 mpegvideo_decoder_select="mpegvideo"
2521 mpeg1video_decoder_select="mpegvideo"
2522 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2523 mpeg2video_decoder_select="mpegvideo"
2524 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2525 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2526 mpeg4_encoder_select="h263_encoder"
2527 msa1_decoder_select="mss34dsp"
2528 mscc_decoder_select="zlib"
2529 msmpeg4v1_decoder_select="h263_decoder"
2530 msmpeg4v2_decoder_select="h263_decoder"
2531 msmpeg4v2_encoder_select="h263_encoder"
2532 msmpeg4v3_decoder_select="h263_decoder"
2533 msmpeg4v3_encoder_select="h263_encoder"
2534 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2535 mts2_decoder_select="mss34dsp"
2536 mxpeg_decoder_select="mjpeg_decoder"
2537 nellymoser_decoder_select="mdct sinewin"
2538 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2539 nuv_decoder_select="idctdsp lzo"
2540 on2avc_decoder_select="mdct"
2541 opus_decoder_deps="swresample"
2542 opus_decoder_select="mdct15"
2543 opus_encoder_select="audio_frame_queue mdct15"
2544 png_decoder_select="zlib"
2545 png_encoder_select="llvidencdsp zlib"
2546 prores_decoder_select="blockdsp idctdsp"
2547 prores_encoder_select="fdctdsp"
2548 qcelp_decoder_select="lsp"
2549 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2550 ra_144_decoder_select="audiodsp"
2551 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2552 ralf_decoder_select="golomb"
2553 rawvideo_decoder_select="bswapdsp"
2554 rscc_decoder_select="zlib"
2555 rtjpeg_decoder_select="me_cmp"
2556 rv10_decoder_select="h263_decoder"
2557 rv10_encoder_select="h263_encoder"
2558 rv20_decoder_select="h263_decoder"
2559 rv20_encoder_select="h263_encoder"
2560 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2561 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2562 screenpresso_decoder_select="zlib"
2563 shorten_decoder_select="bswapdsp"
2564 sipr_decoder_select="lsp"
2565 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2566 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2567 sonic_decoder_select="golomb rangecoder"
2568 sonic_encoder_select="golomb rangecoder"
2569 sonic_ls_encoder_select="golomb rangecoder"
2570 sp5x_decoder_select="mjpeg_decoder"
2571 srgc_decoder_select="zlib"
2572 svq1_decoder_select="hpeldsp"
2573 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2574 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2575 svq3_decoder_suggest="zlib"
2576 tak_decoder_select="audiodsp"
2577 tdsc_decoder_select="zlib mjpeg_decoder"
2578 theora_decoder_select="vp3_decoder"
2579 thp_decoder_select="mjpeg_decoder"
2580 tiff_decoder_suggest="zlib lzma"
2581 tiff_encoder_suggest="zlib"
2582 truehd_decoder_select="mlp_parser"
2583 truehd_encoder_select="lpc"
2584 truemotion2_decoder_select="bswapdsp"
2585 truespeech_decoder_select="bswapdsp"
2586 tscc_decoder_select="zlib"
2587 twinvq_decoder_select="mdct lsp sinewin"
2588 txd_decoder_select="texturedsp"
2589 utvideo_decoder_select="bswapdsp llviddsp"
2590 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2591 vble_decoder_select="llviddsp"
2592 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2593 vc1_qsv_decoder_deps="libmfx"
2594 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2595 vc1image_decoder_select="vc1_decoder"
2596 vorbis_decoder_select="mdct"
2597 vorbis_encoder_select="mdct"
2598 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2599 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2600 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2601 vp6a_decoder_select="vp6_decoder"
2602 vp6f_decoder_select="vp6_decoder"
2603 vp7_decoder_select="h264pred videodsp vp8dsp"
2604 vp8_decoder_select="h264pred videodsp vp8dsp"
2605 vp9_decoder_select="videodsp vp9_parser"
2606 webp_decoder_select="vp8_decoder exif"
2607 wmalossless_decoder_select="llauddsp"
2608 wmapro_decoder_select="mdct sinewin wma_freqs"
2609 wmav1_decoder_select="mdct sinewin wma_freqs"
2610 wmav1_encoder_select="mdct sinewin wma_freqs"
2611 wmav2_decoder_select="mdct sinewin wma_freqs"
2612 wmav2_encoder_select="mdct sinewin wma_freqs"
2613 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2614 wmv1_decoder_select="h263_decoder"
2615 wmv1_encoder_select="h263_encoder"
2616 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2617 wmv2_encoder_select="h263_encoder wmv2dsp"
2618 wmv3_decoder_select="vc1_decoder"
2619 wmv3image_decoder_select="wmv3_decoder"
2620 xma1_decoder_select="wmapro_decoder"
2621 xma2_decoder_select="wmapro_decoder"
2622 zerocodec_decoder_select="zlib"
2623 zlib_decoder_select="zlib"
2624 zlib_encoder_select="zlib"
2625 zmbv_decoder_select="zlib"
2626 zmbv_encoder_select="zlib"
2627
2628 # hardware accelerators
2629 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2630 cuda_deps_any="dlopen LoadLibrary"
2631 cuvid_deps="cuda"
2632 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2633 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2634 dxva2_extralibs="-luser32"
2635 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2636 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2637 vda_deps="vda_framework pthreads"
2638 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2639 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2640 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2641 xvmc_deps="X11_extensions_XvMClib_h"
2642
2643 h263_vaapi_hwaccel_deps="vaapi"
2644 h263_vaapi_hwaccel_select="h263_decoder"
2645 h263_videotoolbox_hwaccel_deps="videotoolbox"
2646 h263_videotoolbox_hwaccel_select="h263_decoder"
2647 h264_cuvid_hwaccel_deps="cuda cuvid"
2648 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2649 h264_d3d11va_hwaccel_deps="d3d11va"
2650 h264_d3d11va_hwaccel_select="h264_decoder"
2651 h264_d3d11va2_hwaccel_deps="d3d11va"
2652 h264_d3d11va2_hwaccel_select="h264_decoder"
2653 h264_dxva2_hwaccel_deps="dxva2"
2654 h264_dxva2_hwaccel_select="h264_decoder"
2655 h264_mediacodec_hwaccel_deps="mediacodec"
2656 h264_mmal_hwaccel_deps="mmal"
2657 h264_qsv_hwaccel_deps="libmfx"
2658 h264_vaapi_hwaccel_deps="vaapi"
2659 h264_vaapi_hwaccel_select="h264_decoder"
2660 h264_vda_hwaccel_deps="vda"
2661 h264_vda_hwaccel_select="h264_decoder"
2662 h264_vda_old_hwaccel_deps="vda"
2663 h264_vda_old_hwaccel_select="h264_decoder"
2664 h264_vdpau_hwaccel_deps="vdpau"
2665 h264_vdpau_hwaccel_select="h264_decoder"
2666 h264_videotoolbox_hwaccel_deps="videotoolbox"
2667 h264_videotoolbox_hwaccel_select="h264_decoder"
2668 hevc_cuvid_hwaccel_deps="cuda cuvid"
2669 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2670 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2671 hevc_d3d11va_hwaccel_select="hevc_decoder"
2672 hevc_mediacodec_hwaccel_deps="mediacodec"
2673 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2674 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2675 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2676 hevc_dxva2_hwaccel_select="hevc_decoder"
2677 hevc_qsv_hwaccel_deps="libmfx"
2678 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2679 hevc_vaapi_hwaccel_select="hevc_decoder"
2680 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2681 hevc_vdpau_hwaccel_select="hevc_decoder"
2682 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2683 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2684 mpeg_xvmc_hwaccel_deps="xvmc"
2685 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2686 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2687 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2688 mpeg1_vdpau_hwaccel_deps="vdpau"
2689 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2690 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2691 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2692 mpeg1_xvmc_hwaccel_deps="xvmc"
2693 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2694 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2695 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2696 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2697 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2698 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2699 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2700 mpeg2_dxva2_hwaccel_deps="dxva2"
2701 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2702 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2703 mpeg2_mmal_hwaccel_deps="mmal"
2704 mpeg2_qsv_hwaccel_deps="libmfx"
2705 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2706 mpeg2_vaapi_hwaccel_deps="vaapi"
2707 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2708 mpeg2_vdpau_hwaccel_deps="vdpau"
2709 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2711 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_xvmc_hwaccel_deps="xvmc"
2713 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2714 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2715 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2716 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2717 mpeg4_mmal_hwaccel_deps="mmal"
2718 mpeg4_vaapi_hwaccel_deps="vaapi"
2719 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2720 mpeg4_vdpau_hwaccel_deps="vdpau"
2721 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2722 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2723 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2724 vc1_cuvid_hwaccel_deps="cuda cuvid"
2725 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2726 vc1_d3d11va_hwaccel_deps="d3d11va"
2727 vc1_d3d11va_hwaccel_select="vc1_decoder"
2728 vc1_d3d11va2_hwaccel_deps="d3d11va"
2729 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2730 vc1_dxva2_hwaccel_deps="dxva2"
2731 vc1_dxva2_hwaccel_select="vc1_decoder"
2732 vc1_mmal_hwaccel_deps="mmal"
2733 vc1_qsv_hwaccel_deps="libmfx"
2734 vc1_qsv_hwaccel_select="qsvdec_vc1"
2735 vc1_vaapi_hwaccel_deps="vaapi"
2736 vc1_vaapi_hwaccel_select="vc1_decoder"
2737 vc1_vdpau_hwaccel_deps="vdpau"
2738 vc1_vdpau_hwaccel_select="vc1_decoder"
2739 vp8_cuvid_hwaccel_deps="cuda cuvid"
2740 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2741 vp9_cuvid_hwaccel_deps="cuda cuvid"
2742 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2743 vp8_mediacodec_hwaccel_deps="mediacodec"
2744 vp8_qsv_hwaccel_deps="libmfx"
2745 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2746 vp9_d3d11va_hwaccel_select="vp9_decoder"
2747 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2748 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2749 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2750 vp9_dxva2_hwaccel_select="vp9_decoder"
2751 vp9_mediacodec_hwaccel_deps="mediacodec"
2752 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2753 vp9_vaapi_hwaccel_select="vp9_decoder"
2754 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2755 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2756 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2757 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2758 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2759
2760 # hardware-accelerated codecs
2761 omx_deps="dlopen pthreads"
2762 omx_extralibs='$ldl'
2763 omx_rpi_select="omx"
2764 qsvdec_select="qsv"
2765 qsvenc_select="qsv"
2766 vaapi_encode_deps="vaapi"
2767 v4l2_m2m_deps_any="linux_videodev2_h"
2768
2769 hwupload_cuda_filter_deps="cuda"
2770 scale_npp_filter_deps="cuda libnpp"
2771 scale_cuda_filter_deps="cuda_sdk"
2772 thumbnail_cuda_filter_deps="cuda_sdk"
2773
2774 nvenc_deps="cuda"
2775 nvenc_deps_any="dlopen LoadLibrary"
2776 nvenc_encoder_deps="nvenc"
2777
2778 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2779 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2780 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2781 h264_cuvid_decoder_deps="cuda cuvid"
2782 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2783 h264_mediacodec_decoder_deps="mediacodec"
2784 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2785 h264_mmal_decoder_deps="mmal"
2786 h264_nvenc_encoder_deps="nvenc"
2787 h264_omx_encoder_deps="omx"
2788 h264_qsv_decoder_deps="libmfx"
2789 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2790 h264_qsv_encoder_deps="libmfx"
2791 h264_qsv_encoder_select="qsvenc"
2792 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2793 h264_vaapi_encoder_select="vaapi_encode golomb"
2794 h264_vda_decoder_deps="vda"
2795 h264_vda_decoder_select="h264_decoder"
2796 h264_vdpau_decoder_deps="vdpau"
2797 h264_vdpau_decoder_select="h264_decoder"
2798 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2799 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2800 hevc_cuvid_decoder_deps="cuda cuvid"
2801 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2802 hevc_mediacodec_decoder_deps="mediacodec"
2803 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2804 hevc_nvenc_encoder_deps="nvenc"
2805 hevc_qsv_decoder_deps="libmfx"
2806 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2807 hevc_qsv_encoder_deps="libmfx"
2808 hevc_qsv_encoder_select="hevcparse qsvenc"
2809 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2810 hevc_vaapi_encoder_select="vaapi_encode golomb"
2811 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2812 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2813 mjpeg_cuvid_decoder_deps="cuda cuvid"
2814 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2815 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2816 mpeg1_cuvid_decoder_deps="cuda cuvid"
2817 mpeg1_vdpau_decoder_deps="vdpau"
2818 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2819 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2820 mpeg2_crystalhd_decoder_select="crystalhd"
2821 mpeg2_cuvid_decoder_deps="cuda cuvid"
2822 mpeg2_mmal_decoder_deps="mmal"
2823 mpeg2_mediacodec_decoder_deps="mediacodec"
2824 mpeg2_qsv_decoder_deps="libmfx"
2825 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2826 mpeg2_qsv_encoder_deps="libmfx"
2827 mpeg2_qsv_encoder_select="qsvenc"
2828 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2829 mpeg2_vaapi_encoder_select="vaapi_encode"
2830 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2831 mpeg4_crystalhd_decoder_select="crystalhd"
2832 mpeg4_cuvid_decoder_deps="cuda cuvid"
2833 mpeg4_mediacodec_decoder_deps="mediacodec"
2834 mpeg4_mmal_decoder_deps="mmal"
2835 mpeg4_omx_encoder_deps="omx"
2836 mpeg4_vdpau_decoder_deps="vdpau"
2837 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2838 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2839 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2840 mpeg_vdpau_decoder_deps="vdpau"
2841 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2842 msmpeg4_crystalhd_decoder_select="crystalhd"
2843 nvenc_h264_encoder_select="h264_nvenc_encoder"
2844 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2845 vc1_crystalhd_decoder_select="crystalhd"
2846 vc1_cuvid_decoder_deps="cuda cuvid"
2847 vc1_mmal_decoder_deps="mmal"
2848 vc1_vdpau_decoder_deps="vdpau"
2849 vc1_vdpau_decoder_select="vc1_decoder"
2850 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2851 vp8_cuvid_decoder_deps="cuda cuvid"
2852 vp8_mediacodec_decoder_deps="mediacodec"
2853 vp8_qsv_decoder_deps="libmfx"
2854 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2855 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2856 vp8_vaapi_encoder_select="vaapi_encode"
2857 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2858 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp9_cuvid_decoder_deps="cuda cuvid"
2860 vp9_mediacodec_decoder_deps="mediacodec"
2861 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2862 vp9_vaapi_encoder_select="vaapi_encode"
2863 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2864 wmv3_crystalhd_decoder_select="crystalhd"
2865 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2866
2867 # parsers
2868 h264_parser_select="golomb h264dsp h264parse"
2869 hevc_parser_select="hevcparse"
2870 mpegaudio_parser_select="mpegaudioheader"
2871 mpegvideo_parser_select="mpegvideo"
2872 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2873 vc1_parser_select="vc1dsp"
2874
2875 # bitstream_filters
2876 mjpeg2jpeg_bsf_select="jpegtables"
2877
2878 # external libraries
2879 aac_at_decoder_deps="audiotoolbox"
2880 ac3_at_decoder_deps="audiotoolbox"
2881 ac3_at_decoder_select="ac3_parser"
2882 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2883 alac_at_decoder_deps="audiotoolbox"
2884 amr_nb_at_decoder_deps="audiotoolbox"
2885 avisynth_deps_any="dlopen LoadLibrary"
2886 avisynth_demuxer_deps="avisynth"
2887 avisynth_demuxer_select="riffdec"
2888 eac3_at_decoder_deps="audiotoolbox"
2889 eac3_at_decoder_select="ac3_parser"
2890 gsm_ms_at_decoder_deps="audiotoolbox"
2891 ilbc_at_decoder_deps="audiotoolbox"
2892 mp1_at_decoder_deps="audiotoolbox"
2893 mp2_at_decoder_deps="audiotoolbox"
2894 mp3_at_decoder_deps="audiotoolbox"
2895 mp1_at_decoder_select="mpegaudioheader"
2896 mp2_at_decoder_select="mpegaudioheader"
2897 mp3_at_decoder_select="mpegaudioheader"
2898 pcm_alaw_at_decoder_deps="audiotoolbox"
2899 pcm_mulaw_at_decoder_deps="audiotoolbox"
2900 qdmc_at_decoder_deps="audiotoolbox"
2901 qdm2_at_decoder_deps="audiotoolbox"
2902 aac_at_encoder_deps="audiotoolbox"
2903 aac_at_encoder_select="audio_frame_queue"
2904 alac_at_encoder_deps="audiotoolbox"
2905 alac_at_encoder_select="audio_frame_queue"
2906 ilbc_at_encoder_deps="audiotoolbox"
2907 ilbc_at_encoder_select="audio_frame_queue"
2908 pcm_alaw_at_encoder_deps="audiotoolbox"
2909 pcm_alaw_at_encoder_select="audio_frame_queue"
2910 pcm_mulaw_at_encoder_deps="audiotoolbox"
2911 pcm_mulaw_at_encoder_select="audio_frame_queue"
2912 chromaprint_muxer_deps="chromaprint"
2913 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2914 libcelt_decoder_deps="libcelt"
2915 libfdk_aac_decoder_deps="libfdk_aac"
2916 libfdk_aac_encoder_deps="libfdk_aac"
2917 libfdk_aac_encoder_select="audio_frame_queue"
2918 libgme_demuxer_deps="libgme"
2919 libgsm_decoder_deps="libgsm"
2920 libgsm_encoder_deps="libgsm"
2921 libgsm_ms_decoder_deps="libgsm"
2922 libgsm_ms_encoder_deps="libgsm"
2923 libilbc_decoder_deps="libilbc"
2924 libilbc_encoder_deps="libilbc"
2925 libkvazaar_encoder_deps="libkvazaar"
2926 libmodplug_demuxer_deps="libmodplug"
2927 libmp3lame_encoder_deps="libmp3lame"
2928 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2929 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2930 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2931 libopencore_amrnb_encoder_select="audio_frame_queue"
2932 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2933 libopenh264_decoder_deps="libopenh264"
2934 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2935 libopenh264_encoder_deps="libopenh264"
2936 libopenjpeg_decoder_deps="libopenjpeg"
2937 libopenjpeg_encoder_deps="libopenjpeg"
2938 libopenmpt_demuxer_deps="libopenmpt"
2939 libopus_decoder_deps="libopus"
2940 libopus_encoder_deps="libopus"
2941 libopus_encoder_select="audio_frame_queue"
2942 librsvg_decoder_deps="librsvg"
2943 libshine_encoder_deps="libshine"
2944 libshine_encoder_select="audio_frame_queue"
2945 libspeex_decoder_deps="libspeex"
2946 libspeex_encoder_deps="libspeex"
2947 libspeex_encoder_select="audio_frame_queue"
2948 libtheora_encoder_deps="libtheora"
2949 libtwolame_encoder_deps="libtwolame"
2950 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2951 libvorbis_decoder_deps="libvorbis"
2952 libvorbis_encoder_deps="libvorbis"
2953 libvorbis_encoder_select="audio_frame_queue"
2954 libvpx_vp8_decoder_deps="libvpx"
2955 libvpx_vp8_encoder_deps="libvpx"
2956 libvpx_vp9_decoder_deps="libvpx"
2957 libvpx_vp9_encoder_deps="libvpx"
2958 libwavpack_encoder_deps="libwavpack"
2959 libwavpack_encoder_select="audio_frame_queue"
2960 libwebp_encoder_deps="libwebp"
2961 libwebp_anim_encoder_deps="libwebp"
2962 libx262_encoder_deps="libx262"
2963 libx264_encoder_deps="libx264"
2964 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2965 libx264rgb_encoder_select="libx264_encoder"
2966 libx265_encoder_deps="libx265"
2967 libxavs_encoder_deps="libxavs"
2968 libxvid_encoder_deps="libxvid"
2969 libzvbi_teletext_decoder_deps="libzvbi"
2970 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2971 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2972 videotoolbox_encoder_suggest="vda_framework"
2973
2974 # demuxers / muxers
2975 ac3_demuxer_select="ac3_parser"
2976 aiff_muxer_select="iso_media"
2977 asf_demuxer_select="riffdec"
2978 asf_o_demuxer_select="riffdec"
2979 asf_muxer_select="riffenc"
2980 asf_stream_muxer_select="asf_muxer"
2981 avi_demuxer_select="iso_media riffdec exif"
2982 avi_muxer_select="riffenc"
2983 caf_demuxer_select="iso_media riffdec"
2984 caf_muxer_select="iso_media"
2985 dash_muxer_select="mp4_muxer"
2986 dash_demuxer_deps="libxml2"
2987 dirac_demuxer_select="dirac_parser"
2988 dts_demuxer_select="dca_parser"
2989 dtshd_demuxer_select="dca_parser"
2990 dv_demuxer_select="dvprofile"
2991 dv_muxer_select="dvprofile"
2992 dxa_demuxer_select="riffdec"
2993 eac3_demuxer_select="ac3_parser"
2994 f4v_muxer_select="mov_muxer"
2995 fifo_muxer_deps="threads"
2996 flac_demuxer_select="flac_parser"
2997 hds_muxer_select="flv_muxer"
2998 hls_muxer_select="mpegts_muxer"
2999 image2_alias_pix_demuxer_select="image2_demuxer"
3000 image2_brender_pix_demuxer_select="image2_demuxer"
3001 ipod_muxer_select="mov_muxer"
3002 ismv_muxer_select="mov_muxer"
3003 matroska_audio_muxer_select="matroska_muxer"
3004 matroska_demuxer_select="iso_media riffdec"
3005 matroska_demuxer_suggest="bzlib lzo zlib"
3006 matroska_muxer_select="iso_media riffenc"
3007 mmf_muxer_select="riffenc"
3008 mov_demuxer_select="iso_media riffdec"
3009 mov_demuxer_suggest="zlib"
3010 mov_muxer_select="iso_media riffenc rtpenc_chain"
3011 mp3_demuxer_select="mpegaudio_parser"
3012 mp3_muxer_select="mpegaudioheader"
3013 mp4_muxer_select="mov_muxer"
3014 mpegts_demuxer_select="iso_media"
3015 mpegts_muxer_select="adts_muxer latm_muxer"
3016 mpegtsraw_demuxer_select="mpegts_demuxer"
3017 mxf_d10_muxer_select="mxf_muxer"
3018 mxf_opatom_muxer_select="mxf_muxer"
3019 nut_muxer_select="riffenc"
3020 nuv_demuxer_select="riffdec"
3021 oga_muxer_select="ogg_muxer"
3022 ogg_demuxer_select="dirac_parse"
3023 ogv_muxer_select="ogg_muxer"
3024 opus_muxer_select="ogg_muxer"
3025 psp_muxer_select="mov_muxer"
3026 rtp_demuxer_select="sdp_demuxer"
3027 rtp_muxer_select="golomb"
3028 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3029 rtsp_demuxer_select="http_protocol rtpdec"
3030 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3031 sap_demuxer_select="sdp_demuxer"
3032 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3033 sdp_demuxer_select="rtpdec"
3034 smoothstreaming_muxer_select="ismv_muxer"
3035 spdif_muxer_select="aac_parser"
3036 spx_muxer_select="ogg_muxer"
3037 swf_demuxer_suggest="zlib"
3038 tak_demuxer_select="tak_parser"
3039 tg2_muxer_select="mov_muxer"
3040 tgp_muxer_select="mov_muxer"
3041 vobsub_demuxer_select="mpegps_demuxer"
3042 w64_demuxer_select="wav_demuxer"
3043 w64_muxer_select="wav_muxer"
3044 wav_demuxer_select="riffdec"
3045 wav_muxer_select="riffenc"
3046 webm_muxer_select="iso_media riffenc"
3047 webm_dash_manifest_demuxer_select="matroska_demuxer"
3048 wtv_demuxer_select="mpegts_demuxer riffdec"
3049 wtv_muxer_select="mpegts_muxer riffenc"
3050 xmv_demuxer_select="riffdec"
3051 xwma_demuxer_select="riffdec"
3052
3053 # indevs / outdevs
3054 alsa_indev_deps="alsa"
3055 alsa_outdev_deps="alsa"
3056 avfoundation_indev_deps="avfoundation pthreads"
3057 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3058 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3059 caca_outdev_deps="libcaca"
3060 decklink_indev_deps="decklink threads"
3061 decklink_indev_extralibs="-lstdc++"
3062 decklink_outdev_deps="decklink threads"
3063 decklink_outdev_extralibs="-lstdc++"
3064 libndi_newtek_indev_deps="libndi_newtek"
3065 libndi_newtek_indev_extralibs="-lndi"
3066 libndi_newtek_outdev_deps="libndi_newtek"
3067 libndi_newtek_outdev_extralibs="-lndi"
3068 dshow_indev_deps="IBaseFilter"
3069 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3070 dv1394_indev_deps="dv1394"
3071 dv1394_indev_select="dv_demuxer"
3072 fbdev_indev_deps="linux_fb_h"
3073 fbdev_outdev_deps="linux_fb_h"
3074 gdigrab_indev_deps="CreateDIBSection"
3075 gdigrab_indev_extralibs="-lgdi32"
3076 gdigrab_indev_select="bmp_decoder"
3077 iec61883_indev_deps="libiec61883"
3078 jack_indev_deps="jack"
3079 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3080 kmsgrab_indev_deps="libdrm"
3081 lavfi_indev_deps="avfilter"
3082 libcdio_indev_deps="libcdio"
3083 libdc1394_indev_deps="libdc1394"
3084 libv4l2_indev_deps="libv4l2"
3085 openal_indev_deps="openal"
3086 opengl_outdev_deps="opengl"
3087 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3088 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3089 pulse_indev_deps="libpulse"
3090 pulse_outdev_deps="libpulse"
3091 sdl2_outdev_deps="sdl2"
3092 sndio_indev_deps="sndio"
3093 sndio_outdev_deps="sndio"
3094 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3095 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3096 vfwcap_indev_deps="vfw32 vfwcap_defines"
3097 xcbgrab_indev_deps="libxcb"
3098 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3099 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3100 xv_outdev_extralibs="-lXv -lX11 -lXext"
3101
3102 # protocols
3103 async_protocol_deps="threads"
3104 bluray_protocol_deps="libbluray"
3105 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3106 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3107 ffrtmpcrypt_protocol_select="tcp_protocol"
3108 ffrtmphttp_protocol_deps="!librtmp_protocol"
3109 ffrtmphttp_protocol_select="http_protocol"
3110 ftp_protocol_select="tcp_protocol"
3111 gopher_protocol_select="network"
3112 http_protocol_select="tcp_protocol"
3113 httpproxy_protocol_select="tcp_protocol"
3114 https_protocol_select="tls_protocol"
3115 icecast_protocol_select="http_protocol"
3116 librtmp_protocol_deps="librtmp"
3117 librtmpe_protocol_deps="librtmp"
3118 librtmps_protocol_deps="librtmp"
3119 librtmpt_protocol_deps="librtmp"
3120 librtmpte_protocol_deps="librtmp"
3121 libsmbclient_protocol_deps="libsmbclient gplv3"
3122 libssh_protocol_deps="libssh"
3123 mmsh_protocol_select="http_protocol"
3124 mmst_protocol_select="network"
3125 rtmp_protocol_deps="!librtmp_protocol"
3126 rtmp_protocol_select="tcp_protocol"
3127 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3128 rtmps_protocol_deps="!librtmp_protocol"
3129 rtmps_protocol_select="tls_protocol"
3130 rtmpt_protocol_select="ffrtmphttp_protocol"
3131 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3132 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3133 rtp_protocol_select="udp_protocol"
3134 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3135 sctp_protocol_select="network"
3136 srtp_protocol_select="rtp_protocol srtp"
3137 tcp_protocol_select="network"
3138 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3139 tls_gnutls_protocol_select="tcp_protocol"
3140 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3141 tls_openssl_protocol_select="tcp_protocol"
3142 tls_schannel_protocol_deps="schannel"
3143 tls_schannel_protocol_select="tcp_protocol"
3144 tls_securetransport_protocol_deps="securetransport"
3145 tls_securetransport_protocol_select="tcp_protocol"
3146 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3147 udp_protocol_select="network"
3148 udplite_protocol_select="network"
3149 unix_protocol_deps="sys_un_h"
3150 unix_protocol_select="network"
3151
3152 # filters
3153 afftfilt_filter_deps="avcodec"
3154 afftfilt_filter_select="fft"
3155 afir_filter_deps="avcodec"
3156 afir_filter_select="fft"
3157 amovie_filter_deps="avcodec avformat"
3158 aresample_filter_deps="swresample"
3159 ass_filter_deps="libass"
3160 atempo_filter_deps="avcodec"
3161 atempo_filter_select="rdft"
3162 azmq_filter_deps="libzmq"
3163 blackframe_filter_deps="gpl"
3164 boxblur_filter_deps="gpl"
3165 bs2b_filter_deps="libbs2b"
3166 colormatrix_filter_deps="gpl"
3167 coreimage_filter_deps="coreimage appkit"
3168 coreimage_filter_extralibs="-framework OpenGL"
3169 coreimagesrc_filter_deps="coreimage appkit"
3170 coreimagesrc_filter_extralibs="-framework OpenGL"
3171 cover_rect_filter_deps="avcodec avformat gpl"
3172 cropdetect_filter_deps="gpl"
3173 deinterlace_qsv_filter_deps="libmfx"
3174 deinterlace_vaapi_filter_deps="vaapi"
3175 delogo_filter_deps="gpl"
3176 deshake_filter_select="pixelutils"
3177 drawtext_filter_deps="libfreetype"
3178 drawtext_filter_suggest="libfontconfig"
3179 elbg_filter_deps="avcodec"
3180 eq_filter_deps="gpl"
3181 fftfilt_filter_deps="avcodec"
3182 fftfilt_filter_select="rdft"
3183 find_rect_filter_deps="avcodec avformat gpl"
3184 firequalizer_filter_deps="avcodec"
3185 firequalizer_filter_select="rdft"
3186 flite_filter_deps="libflite"
3187 framerate_filter_select="pixelutils"
3188 frei0r_filter_deps="frei0r dlopen"
3189 frei0r_src_filter_deps="frei0r dlopen"
3190 fspp_filter_deps="gpl"
3191 geq_filter_deps="gpl"
3192 histeq_filter_deps="gpl"
3193 hqdn3d_filter_deps="gpl"
3194 interlace_filter_deps="gpl"
3195 kerndeint_filter_deps="gpl"
3196 ladspa_filter_deps="ladspa dlopen"
3197 mcdeint_filter_deps="avcodec gpl"
3198 movie_filter_deps="avcodec avformat"
3199 mpdecimate_filter_deps="gpl"
3200 mpdecimate_filter_select="pixelutils"
3201 mptestsrc_filter_deps="gpl"
3202 negate_filter_deps="lut_filter"
3203 nnedi_filter_deps="gpl"
3204 ocr_filter_deps="libtesseract"
3205 ocv_filter_deps="libopencv"
3206 owdenoise_filter_deps="gpl"
3207 pan_filter_deps="swresample"
3208 perspective_filter_deps="gpl"
3209 phase_filter_deps="gpl"
3210 pp7_filter_deps="gpl"
3211 pp_filter_deps="gpl postproc"
3212 pullup_filter_deps="gpl"
3213 removelogo_filter_deps="avcodec avformat swscale"
3214 repeatfields_filter_deps="gpl"
3215 resample_filter_deps="avresample"
3216 rubberband_filter_deps="librubberband"
3217 sab_filter_deps="gpl swscale"
3218 scale2ref_filter_deps="swscale"
3219 scale_filter_deps="swscale"
3220 scale_qsv_filter_deps="libmfx"
3221 select_filter_select="pixelutils"
3222 showcqt_filter_deps="avcodec avformat swscale"
3223 showcqt_filter_select="fft"
3224 showfreqs_filter_deps="avcodec"
3225 showfreqs_filter_select="fft"
3226 showspectrum_filter_deps="avcodec"
3227 showspectrum_filter_select="fft"
3228 showspectrumpic_filter_deps="avcodec"
3229 showspectrumpic_filter_select="fft"
3230 signature_filter_deps="gpl avcodec avformat"
3231 smartblur_filter_deps="gpl swscale"
3232 sofalizer_filter_deps="libmysofa avcodec"
3233 sofalizer_filter_select="fft"
3234 spectrumsynth_filter_deps="avcodec"
3235 spectrumsynth_filter_select="fft"
3236 spp_filter_deps="gpl avcodec"
3237 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3238 stereo3d_filter_deps="gpl"
3239 subtitles_filter_deps="avformat avcodec libass"
3240 super2xsai_filter_deps="gpl"
3241 pixfmts_super2xsai_test_deps="super2xsai_filter"
3242 tinterlace_filter_deps="gpl"
3243 tinterlace_merge_test_deps="tinterlace_filter"
3244 tinterlace_pad_test_deps="tinterlace_filter"
3245 tonemap_filter_deps="const_nan"
3246 uspp_filter_deps="gpl avcodec"
3247 vaguedenoiser_filter_deps="gpl"
3248 vidstabdetect_filter_deps="libvidstab"
3249 vidstabtransform_filter_deps="libvidstab"
3250 libvmaf_filter_deps="libvmaf"
3251 zmq_filter_deps="libzmq"
3252 zoompan_filter_deps="swscale"
3253 zscale_filter_deps="libzimg const_nan"
3254 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3255
3256 # examples
3257 avio_dir_cmd_deps="avformat avutil"
3258 avio_reading_deps="avformat avcodec avutil"
3259 decode_audio_example_deps="avcodec avutil"
3260 decode_video_example_deps="avcodec avutil"
3261 demuxing_decoding_example_deps="avcodec avformat avutil"
3262 encode_audio_example_deps="avcodec avutil"
3263 encode_video_example_deps="avcodec avutil"
3264 extract_mvs_example_deps="avcodec avformat avutil"
3265 filter_audio_example_deps="avfilter avutil"
3266 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3267 filtering_video_example_deps="avfilter avcodec avformat avutil"
3268 http_multiclient_example_deps="avformat avutil fork"
3269 hw_decode_example_deps="avcodec avformat avutil"
3270 metadata_example_deps="avformat avutil"
3271 muxing_example_deps="avcodec avformat avutil swscale"
3272 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3273 remuxing_example_deps="avcodec avformat avutil"
3274 resampling_audio_example_deps="avutil swresample"
3275 scaling_video_example_deps="avutil swscale"
3276 transcode_aac_example_deps="avcodec avformat swresample"
3277 transcoding_example_deps="avfilter avcodec avformat avutil"
3278
3279 # libraries, in linking order
3280 avcodec_deps="avutil"
3281 avcodec_select="null_bsf"
3282 avdevice_deps="avformat avcodec avutil"
3283 avfilter_deps="avutil"
3284 avformat_deps="avcodec avutil"
3285 avformat_suggest="network"
3286 avresample_deps="avutil"
3287 postproc_deps="avutil gpl"
3288 swresample_deps="avutil"
3289 swscale_deps="avutil"
3290
3291 # programs
3292 ffmpeg_deps="avcodec avfilter avformat swresample"
3293 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3294                null_filter
3295                trim_filter"
3296 ffplay_deps="avcodec avformat swscale swresample sdl2"
3297 ffplay_extralibs='$sdl2_extralibs'
3298 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3299 ffprobe_deps="avcodec avformat"
3300 ffserver_deps="avformat fork sarestart"
3301 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3302
3303 # documentation
3304 podpages_deps="perl"
3305 manpages_deps="perl pod2man"
3306 htmlpages_deps="perl"
3307 htmlpages_deps_any="makeinfo_html texi2html"
3308 txtpages_deps="perl makeinfo"
3309 doc_deps_any="manpages htmlpages podpages txtpages"
3310
3311 # default parameters
3312
3313 logfile="ffbuild/config.log"
3314
3315 # installation paths
3316 prefix_default="/usr/local"
3317 bindir_default='${prefix}/bin'
3318 datadir_default='${prefix}/share/ffmpeg'
3319 docdir_default='${prefix}/share/doc/ffmpeg'
3320 incdir_default='${prefix}/include'
3321 libdir_default='${prefix}/lib'
3322 mandir_default='${prefix}/share/man'
3323
3324 # toolchain
3325 ar_default="ar"
3326 cc_default="gcc"
3327 cxx_default="g++"
3328 host_cc_default="gcc"
3329 doxygen_default="doxygen"
3330 install="install"
3331 ln_s_default="ln -s -f"
3332 nm_default="nm -g"
3333 pkg_config_default=pkg-config
3334 ranlib_default="ranlib"
3335 strip_default="strip"
3336 version_script='--version-script'
3337 x86asmexe_default="nasm"
3338 windres_default="windres"
3339 nvcc_default="nvcc"
3340 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3341
3342 # OS
3343 target_os_default=$(tolower $(uname -s))
3344 host_os=$target_os_default
3345
3346 # machine
3347 if test "$target_os_default" = aix; then
3348     arch_default=$(uname -p)
3349     strip_default="strip -X32_64"
3350 else
3351     arch_default=$(uname -m)
3352 fi
3353 cpu="generic"
3354 intrinsics="none"
3355
3356 # configurable options
3357 enable $PROGRAM_LIST
3358 enable $DOCUMENT_LIST
3359 enable $EXAMPLE_LIST
3360 enable $(filter_out avresample $LIBRARY_LIST)
3361 enable stripping
3362
3363 enable asm
3364 enable debug
3365 enable doc
3366 enable faan faandct faanidct
3367 enable optimizations
3368 enable runtime_cpudetect
3369 enable safe_bitstream_reader
3370 enable static
3371 enable swscale_alpha
3372 enable valgrind_backtrace
3373
3374 sws_max_filter_size_default=256
3375 set_default sws_max_filter_size
3376
3377 # build settings
3378 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3379 LIBPREF="lib"
3380 LIBSUF=".a"
3381 FULLNAME='$(NAME)$(BUILDSUF)'
3382 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3383 SLIBPREF="lib"
3384 SLIBSUF=".so"
3385 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3386 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3387 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3388 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3389 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3390 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3391 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3392
3393 asflags_filter=echo
3394 cflags_filter=echo
3395 ldflags_filter=echo
3396
3397 AS_C='-c'
3398 AS_O='-o $@'
3399 CC_C='-c'
3400 CC_E='-E -o $@'
3401 CC_O='-o $@'
3402 CXX_C='-c'
3403 CXX_O='-o $@'
3404 OBJCC_C='-c'
3405 OBJCC_E='-E -o $@'
3406 OBJCC_O='-o $@'
3407 X86ASM_O='-o $@'
3408 LD_O='-o $@'
3409 LD_LIB='-l%'
3410 LD_PATH='-L'
3411 HOSTCC_C='-c'
3412 HOSTCC_E='-E -o $@'
3413 HOSTCC_O='-o $@'
3414 HOSTLD_O='-o $@'
3415 NVCC_C='-c'
3416 NVCC_O='-o $@'
3417
3418 host_extralibs='-lm'
3419 host_cflags_filter=echo
3420 host_ldflags_filter=echo
3421
3422 target_path='$(CURDIR)'
3423
3424 # since the object filename is not given with the -MM flag, the compiler
3425 # is only able to print the basename, and we must add the path ourselves
3426 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3427 DEPFLAGS='-MM'
3428
3429 mkdir -p ffbuild
3430
3431 # find source path
3432 if test -f configure; then
3433     source_path=.
3434 else
3435     source_path=$(cd $(dirname "$0"); pwd)
3436     case "$source_path" in
3437         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3438     esac
3439     test -e "$source_path/config.h" &&
3440         die "Out of tree builds are impossible with config.h in source dir."
3441 fi
3442
3443 for v in "$@"; do
3444     r=${v#*=}
3445     l=${v%"$r"}
3446     r=$(sh_quote "$r")
3447     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3448 done
3449
3450 find_things(){
3451     thing=$1
3452     pattern=$2
3453     file=$source_path/$3
3454     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3455 }
3456
3457 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3458 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3459 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3460 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3461 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3462 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3463 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3464 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3465 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3466
3467 find_things_extern(){
3468     thing=$1
3469     pattern=$2
3470     file=$source_path/$3
3471     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3472 }
3473
3474 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3475 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3476
3477 ALL_COMPONENTS="
3478     $BSF_LIST
3479     $DECODER_LIST
3480     $DEMUXER_LIST
3481     $ENCODER_LIST
3482     $FILTER_LIST
3483     $HWACCEL_LIST
3484     $INDEV_LIST
3485     $MUXER_LIST
3486     $OUTDEV_LIST
3487     $PARSER_LIST
3488     $PROTOCOL_LIST
3489 "
3490
3491 for n in $COMPONENT_LIST; do
3492     v=$(toupper ${n%s})_LIST
3493     eval enable \$$v
3494     eval ${n}_if_any="\$$v"
3495 done
3496
3497 enable $ARCH_EXT_LIST
3498
3499 die_unknown(){
3500     echo "Unknown option \"$1\"."
3501     echo "See $0 --help for available options."
3502     exit 1
3503 }
3504
3505 print_in_columns() {
3506     cols=$(expr $ncols / 24)
3507     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3508 }
3509
3510 show_list() {
3511     suffix=_$1
3512     shift
3513     echo $* | sed s/$suffix//g | print_in_columns
3514     exit 0
3515 }
3516
3517 rand_list(){
3518     IFS=', '
3519     set -- $*
3520     unset IFS
3521     for thing; do
3522         comp=${thing%:*}
3523         prob=${thing#$comp}
3524         prob=${prob#:}
3525         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3526         echo "prob ${prob:-0.5}"
3527         printf '%s\n' $comp
3528     done
3529 }
3530
3531 do_random(){
3532     action=$1
3533     shift
3534     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3535     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3536 }
3537
3538 for opt do
3539     optval="${opt#*=}"
3540     case "$opt" in
3541         --extra-ldflags=*)
3542             add_ldflags $optval
3543         ;;
3544         --extra-ldexeflags=*)
3545             add_ldexeflags $optval
3546         ;;
3547         --extra-ldlibflags=*)
3548             add_ldlibflags $optval
3549         ;;
3550         --extra-libs=*)
3551             add_extralibs $optval
3552         ;;
3553         --disable-devices)
3554             disable $INDEV_LIST $OUTDEV_LIST
3555         ;;
3556         --enable-debug=*)
3557             debuglevel="$optval"
3558         ;;
3559         --disable-programs)
3560             disable $PROGRAM_LIST
3561         ;;
3562         --disable-everything)
3563             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3564         ;;
3565         --disable-all)
3566             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3567             disable $LIBRARY_LIST $PROGRAM_LIST doc
3568             enable avutil
3569         ;;
3570         --enable-random|--disable-random)
3571             action=${opt%%-random}
3572             do_random ${action#--} $COMPONENT_LIST
3573         ;;
3574         --enable-random=*|--disable-random=*)
3575             action=${opt%%-random=*}
3576             do_random ${action#--} $optval
3577         ;;
3578         --enable-sdl)
3579             enable sdl2
3580         ;;
3581         --enable-*=*|--disable-*=*)
3582             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3583             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3584             eval list=\$$(toupper $thing)_LIST
3585             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3586             list=$(filter "$name" $list)
3587             [ "$list" = "" ] && warn "Option $opt did not match anything"
3588             $action $list
3589         ;;
3590         --enable-yasm|--disable-yasm)
3591             warn "The ${opt} option is only provided for compatibility and will be\n"\
3592                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3593             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3594         ;;
3595         --yasmexe=*)
3596             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3597                  "removed in the future. Use --x86asmexe instead."
3598             x86asmexe="$optval"
3599         ;;
3600         --enable-?*|--disable-?*)
3601             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3602             if is_in $option $COMPONENT_LIST; then
3603                 test $action = disable && action=unset
3604                 eval $action \$$(toupper ${option%s})_LIST
3605             elif is_in $option $CMDLINE_SELECT; then
3606                 $action $option
3607             else
3608                 die_unknown $opt
3609             fi
3610         ;;
3611         --list-*)
3612             NAME="${opt#--list-}"
3613             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3614             NAME=${NAME%s}
3615             eval show_list $NAME \$$(toupper $NAME)_LIST
3616         ;;
3617         --help|-h) show_help
3618         ;;
3619         --quiet|-q) quiet=yes
3620         ;;
3621         --fatal-warnings) enable fatal_warnings
3622         ;;
3623         --libfuzzer=*)
3624             libfuzzer_path="$optval"
3625         ;;
3626         *)
3627             optname="${opt%%=*}"
3628             optname="${optname#--}"
3629             optname=$(echo "$optname" | sed 's/-/_/g')
3630             if is_in $optname $CMDLINE_SET; then
3631                 eval $optname='$optval'
3632             elif is_in $optname $CMDLINE_APPEND; then
3633                 append $optname "$optval"
3634             else
3635                 die_unknown $opt
3636             fi
3637         ;;
3638     esac
3639 done
3640
3641 for e in $env; do
3642     eval "export $e"
3643 done
3644
3645 if disabled autodetect; then
3646
3647     # Unless iconv is explicitely disabled by the user, we still want to probe
3648     # for the iconv from the libc.
3649     disabled iconv || enable libc_iconv
3650
3651     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3652     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3653 fi
3654 # Mark specifically enabled, but normally autodetected libraries as requested.
3655 for lib in $AUTODETECT_LIBS; do
3656     enabled $lib && request $lib
3657 done
3658 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3659 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3660 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3661
3662 disabled logging && logfile=/dev/null
3663
3664 die_license_disabled() {
3665     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3666 }
3667
3668 die_license_disabled_gpl() {
3669     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3670 }
3671
3672 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3673 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3674
3675 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3676 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3677
3678 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3679
3680 # Disable all the library-specific components if the library itself
3681 # is disabled, see AVCODEC_LIST and following _LIST variables.
3682
3683 disable_components(){
3684     disabled ${1} && disable $(
3685         eval components="\$$(toupper ${1})_COMPONENTS"
3686         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3687     )
3688 }
3689
3690 map 'disable_components $v' $LIBRARY_LIST
3691
3692 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3693 set >> $logfile
3694
3695 test -n "$valgrind" && toolchain="valgrind-memcheck"
3696
3697 enabled ossfuzz && {
3698     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3699     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3700 }
3701
3702 case "$toolchain" in
3703     *-asan)
3704         cc_default="${toolchain%-asan}"
3705         add_cflags  -fsanitize=address
3706         add_ldflags -fsanitize=address
3707     ;;
3708     *-msan)
3709         cc_default="${toolchain%-msan}"
3710         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3711         add_ldflags -fsanitize=memory
3712     ;;
3713     *-tsan)
3714         cc_default="${toolchain%-tsan}"
3715         add_cflags  -fsanitize=thread -fPIE
3716         add_ldflags -fsanitize=thread -pie
3717         case "$toolchain" in
3718             gcc-tsan)
3719                 add_cflags  -fPIC
3720                 add_ldflags -fPIC
3721                 ;;
3722         esac
3723     ;;
3724     *-usan)
3725         cc_default="${toolchain%-usan}"
3726         add_cflags  -fsanitize=undefined
3727         add_ldflags -fsanitize=undefined
3728     ;;
3729     valgrind-*)
3730         target_exec_default="valgrind"
3731         case "$toolchain" in
3732             valgrind-massif)
3733                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3734                 ;;
3735             valgrind-memcheck)
3736                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3737                 ;;
3738         esac
3739     ;;
3740     msvc)
3741         # Check whether the current MSVC version needs the C99 converter.
3742         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3743         # support enough of C99 to build ffmpeg. Default to the new
3744         # behaviour if the regexp was unable to match anything, since this
3745         # successfully parses the version number of existing supported
3746         # versions that require the converter (MSVC 2010 and 2012).
3747         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3748         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3749             cc_default="cl"
3750             cxx_default="cl"
3751         else
3752             cc_default="c99wrap cl"
3753             cxx_default="c99wrap cl"
3754         fi
3755         ld_default="$source_path/compat/windows/mslink"
3756         nm_default="dumpbin -symbols"
3757         ar_default="lib"
3758         case "$arch" in
3759         arm*)
3760             as_default="armasm"
3761             ;;
3762         esac
3763         target_os_default="win32"
3764         # Use a relative path for TMPDIR. This makes sure all the
3765         # ffconf temp files are written with a relative path, avoiding
3766         # issues with msys/win32 path conversion for MSVC parameters
3767         # such as -Fo<file> or -out:<file>.
3768         TMPDIR=.
3769     ;;
3770     icl)
3771         cc_default="icl"
3772         ld_default="xilink"
3773         nm_default="dumpbin -symbols"
3774         ar_default="xilib"
3775         target_os_default="win32"
3776         TMPDIR=.
3777     ;;
3778     gcov)
3779         add_cflags  -fprofile-arcs -ftest-coverage
3780         add_ldflags -fprofile-arcs -ftest-coverage
3781     ;;
3782     llvm-cov)
3783         add_cflags -fprofile-arcs -ftest-coverage
3784         add_ldflags --coverage
3785     ;;
3786     hardened)
3787         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3788         add_cflags   -fno-strict-overflow -fstack-protector-all
3789         add_ldflags  -Wl,-z,relro -Wl,-z,now
3790         add_cflags   -fPIE
3791         add_ldexeflags -fPIE -pie
3792     ;;
3793     ?*)
3794         die "Unknown toolchain $toolchain"
3795     ;;
3796 esac
3797
3798 test -n "$cross_prefix" && enable cross_compile
3799
3800 if enabled cross_compile; then
3801     test -n "$arch" && test -n "$target_os" ||
3802         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3803 fi
3804
3805 ar_default="${cross_prefix}${ar_default}"
3806 cc_default="${cross_prefix}${cc_default}"
3807 cxx_default="${cross_prefix}${cxx_default}"
3808 nm_default="${cross_prefix}${nm_default}"
3809 pkg_config_default="${cross_prefix}${pkg_config_default}"
3810 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3811     ranlib_default="${cross_prefix}${ranlib_default} -D"
3812 else
3813     ranlib_default="${cross_prefix}${ranlib_default}"
3814 fi
3815 strip_default="${cross_prefix}${strip_default}"
3816 windres_default="${cross_prefix}${windres_default}"
3817
3818 sysinclude_default="${sysroot}/usr/include"
3819
3820 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3821     target_exec target_os x86asmexe nvcc
3822 enabled cross_compile || host_cc_default=$cc
3823 set_default host_cc
3824
3825 pkg_config_fail_message=""
3826 if ! $pkg_config --version >/dev/null 2>&1; then
3827     warn "$pkg_config not found, library detection may fail."
3828     pkg_config=false
3829 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3830     pkg_config_fail_message="
3831 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3832 fi
3833
3834 if test $doxygen != $doxygen_default && \
3835   ! $doxygen --version >/dev/null 2>&1; then
3836     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3837 fi
3838
3839 exesuf() {
3840     case $1 in
3841         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3842     esac
3843 }
3844
3845 EXESUF=$(exesuf $target_os)
3846 HOSTEXESUF=$(exesuf $host_os)
3847
3848 # set temporary file name
3849 : ${TMPDIR:=$TEMPDIR}
3850 : ${TMPDIR:=$TMP}
3851 : ${TMPDIR:=/tmp}
3852
3853 if [ -n "$tempprefix" ] ; then
3854     mktemp(){
3855         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3856         echo "$tmpname"
3857         mkdir "$tmpname"
3858     }
3859 elif ! check_cmd mktemp -u XXXXXX; then
3860     # simple replacement for missing mktemp
3861     # NOT SAFE FOR GENERAL USE
3862     mktemp(){
3863         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3864         echo "$tmpname"
3865         mkdir "$tmpname"
3866     }
3867 fi
3868
3869 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3870     die "Unable to create temporary directory in $TMPDIR."
3871
3872 tmpfile(){
3873     tmp="${FFTMPDIR}/test"$2
3874     (set -C; exec > $tmp) 2> /dev/null ||
3875         die "Unable to create temporary file in $FFTMPDIR."
3876     eval $1=$tmp
3877 }
3878
3879 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3880 trap 'exit 2' INT
3881
3882 tmpfile TMPASM .asm
3883 tmpfile TMPC   .c
3884 tmpfile TMPCPP .cpp
3885 tmpfile TMPE   $EXESUF
3886 tmpfile TMPH   .h
3887 tmpfile TMPM   .m
3888 tmpfile TMPO   .o
3889 tmpfile TMPS   .S
3890 tmpfile TMPSH  .sh
3891 tmpfile TMPV   .ver
3892
3893 unset -f mktemp
3894
3895 chmod +x $TMPE
3896
3897 # make sure we can execute files in $TMPDIR
3898 cat > $TMPSH 2>> $logfile <<EOF
3899 #! /bin/sh
3900 EOF
3901 chmod +x $TMPSH >> $logfile 2>&1
3902 if ! $TMPSH >> $logfile 2>&1; then
3903     cat <<EOF
3904 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3905 variable to another directory and make sure that it is not mounted noexec.
3906 EOF
3907     die "Sanity test failed."
3908 fi
3909
3910 armasm_flags(){
3911     for flag; do
3912         case $flag in
3913             # Filter out MSVC cl.exe options from cflags that shouldn't
3914             # be passed to gas-preprocessor
3915             -M[TD]*)                                            ;;
3916             *)                  echo $flag                      ;;
3917         esac
3918    done
3919 }
3920
3921 ccc_flags(){
3922     for flag; do
3923         case $flag in
3924             -std=c99)           echo -c99                       ;;
3925             -mcpu=*)            echo -arch ${flag#*=}           ;;
3926             -mieee)             echo -ieee                      ;;
3927             -O*|-fast)          echo $flag                      ;;
3928             -fno-math-errno)    echo -assume nomath_errno       ;;
3929             -g)                 echo -g3                        ;;
3930             -Wall)              echo -msg_enable level2         ;;
3931             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3932             -Wl,*)              echo $flag                      ;;
3933             -f*|-W*)                                            ;;
3934             *)                  echo $flag                      ;;
3935         esac
3936    done
3937 }
3938
3939 cparser_flags(){
3940     for flag; do
3941         case $flag in
3942             -Wno-switch)             echo -Wno-switch-enum ;;
3943             -Wno-format-zero-length) ;;
3944             -Wdisabled-optimization) ;;
3945             -Wno-pointer-sign)       echo -Wno-other ;;
3946             *)                       echo $flag ;;
3947         esac
3948     done
3949 }
3950
3951 msvc_common_flags(){
3952     for flag; do
3953         case $flag in
3954             # In addition to specifying certain flags under the compiler
3955             # specific filters, they must be specified here as well or else the
3956             # generic catch all at the bottom will print the original flag.
3957             -Wall)                ;;
3958             -Wextra)              ;;
3959             -std=c99)             ;;
3960             # Common flags
3961             -fomit-frame-pointer) ;;
3962             -g)                   echo -Z7 ;;
3963             -fno-math-errno)      ;;
3964             -fno-common)          ;;
3965             -fno-signed-zeros)    ;;
3966             -fPIC)                ;;
3967             -mthumb)              ;;
3968             -march=*)             ;;
3969             -lz)                  echo zlib.lib ;;
3970             -lx264)               echo libx264.lib ;;
3971             -lstdc++)             ;;
3972             -l*)                  echo ${flag#-l}.lib ;;
3973             -LARGEADDRESSAWARE)   echo $flag ;;
3974             -L*)                  echo -libpath:${flag#-L} ;;
3975             *)                    echo $flag ;;
3976         esac
3977     done
3978 }
3979
3980 msvc_flags(){
3981     msvc_common_flags "$@"
3982     for flag; do
3983         case $flag in
3984             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3985                                        -wd4554 ;;
3986             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3987                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3988                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3989                                        -wd4307 \
3990                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3991         esac
3992     done
3993 }
3994
3995 icl_flags(){
3996     msvc_common_flags "$@"
3997     for flag; do
3998         case $flag in
3999             # Despite what Intel's documentation says -Wall, which is supported
4000             # on Windows, does enable remarks so disable them here.
4001             -Wall)                echo $flag -Qdiag-disable:remark ;;
4002             -std=c99)             echo -Qstd=c99 ;;
4003             -flto)                echo -ipo ;;
4004         esac
4005     done
4006 }
4007
4008 icc_flags(){
4009     for flag; do
4010         case $flag in
4011             -flto)                echo -ipo ;;
4012             *)                    echo $flag ;;
4013         esac
4014     done
4015 }
4016
4017 pgi_flags(){
4018     for flag; do
4019         case $flag in
4020             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4021             -fomit-frame-pointer) echo -Mnoframe ;;
4022             -g)                   echo -gopt ;;
4023             *)                    echo $flag ;;
4024         esac
4025     done
4026 }
4027
4028 suncc_flags(){
4029     for flag; do
4030         case $flag in
4031             -march=*|-mcpu=*)
4032                 case "${flag#*=}" in
4033                     native)                   echo -xtarget=native       ;;
4034                     v9|niagara)               echo -xarch=sparc          ;;
4035                     ultrasparc)               echo -xarch=sparcvis       ;;
4036                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4037                     i586|pentium)             echo -xchip=pentium        ;;
4038                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4039                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4040                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4041                     pentium4*)          echo -xtarget=pentium4           ;;
4042                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4043                     *-sse3)             echo -xarch=sse3                 ;;
4044                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4045                     bonnell)                   echo -xarch=ssse3         ;;
4046                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4047                     westmere)                  echo -xtarget=westmere    ;;
4048                     silvermont)                echo -xarch=sse4_2        ;;
4049                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4050                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4051                                                echo -xarch=avx           ;;
4052                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4053                     btver1)                    echo -xarch=amdsse4a      ;;
4054                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4055                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4056                     k8|opteron|athlon64|athlon-fx)
4057                                                echo -xarch=sse2a         ;;
4058                     athlon*)                   echo -xarch=pentium_proa  ;;
4059                 esac
4060                 ;;
4061             -std=c99)             echo -xc99              ;;
4062             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4063             -fPIC)                echo -KPIC -xcode=pic32 ;;
4064             -W*,*)                echo $flag              ;;
4065             -f*-*|-W*|-mimpure-text)                      ;;
4066             -shared)              echo -G                 ;;
4067             *)                    echo $flag              ;;
4068         esac
4069     done
4070 }
4071
4072 tms470_flags(){
4073     for flag; do
4074         case $flag in
4075             -march=*|-mcpu=*)
4076                 case "${flag#*=}" in
4077                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4078                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4079                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4080                     armv6*|arm11*)          echo -mv=6   ;;
4081                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4082                                             echo -mv=5e  ;;
4083                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4084                 esac
4085                 ;;
4086             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4087             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4088             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4089             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4090             -msoft-float)   echo --float_support=vfplib       ;;
4091             -O[0-3]|-mf=*)  echo $flag                        ;;
4092             -g)             echo -g -mn                       ;;
4093             -pds=*)         echo $flag                        ;;
4094             -D*|-I*)        echo $flag                        ;;
4095             --gcc|--abi=*)  echo $flag                        ;;
4096             -me)            echo $flag                        ;;
4097         esac
4098     done
4099 }
4100
4101 probe_cc(){
4102     pfx=$1
4103     _cc=$2
4104     first=$3
4105
4106     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4107     unset _ld_o _ldflags _ld_lib _ld_path
4108     unset _depflags _DEPCMD _DEPFLAGS
4109     _flags_filter=echo
4110
4111     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4112         true # no-op to avoid reading stdin in following checks
4113     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4114         _type=llvm_gcc
4115         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4116         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4117         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4118         _cflags_speed='-O3'
4119         _cflags_size='-Os'
4120     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4121         _type=gcc
4122         gcc_version=$($_cc --version | head -n1)
4123         gcc_basever=$($_cc -dumpversion)
4124         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4125         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4126         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4127         case $gcc_basever in
4128             2) ;;
4129             2.*) ;;
4130             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4131         esac
4132         if [ "$first" = true ]; then
4133             case $gcc_basever in
4134                 4.2*)
4135                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4136             esac
4137         fi
4138         _cflags_speed='-O3'
4139         _cflags_size='-Os'
4140     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4141         _type=icc
4142         _ident=$($_cc --version | head -n1)
4143         _depflags='-MMD'
4144         _cflags_speed='-O3'
4145         _cflags_size='-Os'
4146         _cflags_noopt='-O1'
4147         _flags_filter=icc_flags
4148     elif $_cc -v 2>&1 | grep -q xlc; then
4149         _type=xlc
4150         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4151         _cflags_speed='-O5'
4152         _cflags_size='-O5 -qcompact'
4153     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4154         _type=ccc
4155         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4156         _DEPFLAGS='-M'
4157         _cflags_speed='-fast'
4158         _cflags_size='-O1'
4159         _flags_filter=ccc_flags
4160     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4161         test -d "$sysroot" || die "No valid sysroot specified."
4162         _type=armcc
4163         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4164         armcc_conf="$PWD/armcc.conf"
4165         $_cc --arm_linux_configure                 \
4166              --arm_linux_config_file="$armcc_conf" \
4167              --configure_sysroot="$sysroot"        \
4168              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4169              die "Error creating armcc configuration file."
4170         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4171         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4172         as_default="${cross_prefix}gcc"
4173         _depflags='-MMD'
4174         _cflags_speed='-O3'
4175         _cflags_size='-Os'
4176     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4177         _type=tms470
4178         _ident=$($_cc -version | head -n1 | tr -s ' ')
4179         _flags='--gcc --abi=eabi -me'
4180         _cc_e='-ppl -fe=$@'
4181         _cc_o='-fe=$@'
4182         _depflags='-ppa -ppd=$(@:.o=.d)'
4183         _cflags_speed='-O3 -mf=5'
4184         _cflags_size='-O3 -mf=2'
4185         _flags_filter=tms470_flags
4186     elif $_cc -v 2>&1 | grep -q clang; then
4187         _type=clang
4188         _ident=$($_cc --version 2>/dev/null | head -n1)
4189         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4190         _cflags_speed='-O3'
4191         _cflags_size='-Oz'
4192     elif $_cc -V 2>&1 | grep -q Sun; then
4193         _type=suncc
4194         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4195         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4196         _DEPFLAGS='-xM1 -xc99'
4197         _ldflags='-std=c99'
4198         _cflags_speed='-O5'
4199         _cflags_size='-O5 -xspace'
4200         _flags_filter=suncc_flags
4201     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4202         _type=pathscale
4203         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4204         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4205         _cflags_speed='-O2'
4206         _cflags_size='-Os'
4207         _flags_filter='filter_out -Wdisabled-optimization'
4208     elif $_cc -v 2>&1 | grep -q Open64; then
4209         _type=open64
4210         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4211         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4212         _cflags_speed='-O2'
4213         _cflags_size='-Os'
4214         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4215     elif $_cc -V 2>&1 | grep -q Portland; then
4216         _type=pgi
4217         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4218         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4219         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4220         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4221         _cflags_noopt="-O"
4222         _flags_filter=pgi_flags
4223     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4224         _type=armasm
4225         _ident=$($_cc | head -n1)
4226         # 4509: "This form of conditional instruction is deprecated"
4227         _flags="-nologo -ignore 4509"
4228         _flags_filter=armasm_flags
4229     elif $_cc 2>&1 | grep -q Intel; then
4230         _type=icl
4231         _ident=$($_cc 2>&1 | head -n1)
4232         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4233         # Not only is O3 broken on 13.x+ but it is slower on all previous
4234         # versions (tested) as well.
4235         _cflags_speed="-O2"
4236         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4237         if $_cc 2>&1 | grep -q Linker; then
4238             _ld_o='-out:$@'
4239         else
4240             _ld_o='-Fe$@'
4241         fi
4242         _cc_o='-Fo$@'
4243         _cc_e='-P'
4244         _flags_filter=icl_flags
4245         _ld_lib='lib%.a'
4246         _ld_path='-libpath:'
4247         # -Qdiag-error to make icl error when seeing certain unknown arguments
4248         _flags='-nologo -Qdiag-error:4044,10157'
4249         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4250         # with MSVC which enables it by default.
4251         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4252         disable stripping
4253     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4254         # lld can emulate multiple different linkers; in ms link.exe mode,
4255         # the -? parameter gives the help output which contains an identifyable
4256         # string, while it gives an error in other modes.
4257         _type=lld-link
4258         # The link.exe mode doesn't have a switch for getting the version,
4259         # but we can force it back to gnu mode and get the version from there.
4260         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4261         _ld_o='-out:$@'
4262         _flags_filter=msvc_flags
4263         _ld_lib='lib%.a'
4264         _ld_path='-libpath:'
4265     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4266         _type=msvc
4267         _ident=$($_cc 2>&1 | head -n1)
4268         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4269         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4270         _cflags_speed="-O2"
4271         _cflags_size="-O1"
4272         _cflags_noopt="-O1"
4273         if $_cc -nologo- 2>&1 | grep -q Linker; then
4274             _ld_o='-out:$@'
4275         else
4276             _ld_o='-Fe$@'
4277         fi
4278         _cc_o='-Fo$@'
4279         _cc_e='-P -Fi$@'
4280         _flags_filter=msvc_flags
4281         _ld_lib='lib%.a'
4282         _ld_path='-libpath:'
4283         _flags='-nologo'
4284         disable stripping
4285     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4286         _type=cparser
4287         _ident=$($_cc --version | head -n1)
4288         _depflags='-MMD'
4289         _cflags_speed='-O4'
4290         _cflags_size='-O2'
4291         _flags_filter=cparser_flags
4292     fi
4293
4294     eval ${pfx}_type=\$_type
4295     eval ${pfx}_ident=\$_ident
4296 }
4297
4298 set_ccvars(){
4299     eval ${1}_C=\${_cc_c-\${${1}_C}}
4300     eval ${1}_E=\${_cc_e-\${${1}_E}}
4301     eval ${1}_O=\${_cc_o-\${${1}_O}}
4302
4303     if [ -n "$_depflags" ]; then
4304         eval ${1}_DEPFLAGS=\$_depflags
4305     else
4306         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4307         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4308         eval DEP${1}FLAGS=\$_flags
4309     fi
4310 }
4311
4312 probe_cc cc "$cc" "true"
4313 cflags_filter=$_flags_filter
4314 cflags_speed=$_cflags_speed
4315 cflags_size=$_cflags_size
4316 cflags_noopt=$_cflags_noopt
4317 add_cflags $_flags $_cflags
4318 cc_ldflags=$_ldflags
4319 set_ccvars CC
4320 set_ccvars CXX
4321
4322 probe_cc hostcc "$host_cc"
4323 host_cflags_filter=$_flags_filter
4324 host_cflags_speed=$_cflags_speed
4325 add_host_cflags  $_flags $_cflags
4326 set_ccvars HOSTCC
4327
4328 test -n "$cc_type" && enable $cc_type ||
4329     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4330
4331 : ${as_default:=$cc}
4332 : ${objcc_default:=$cc}
4333 : ${dep_cc_default:=$cc}
4334 : ${ld_default:=$cc}
4335 : ${host_ld_default:=$host_cc}
4336 set_default ar as objcc dep_cc ld ln_s host_ld windres
4337
4338 probe_cc as "$as"
4339 asflags_filter=$_flags_filter
4340 add_asflags $_flags $_cflags
4341 set_ccvars AS
4342
4343 probe_cc objcc "$objcc"
4344 objcflags_filter=$_flags_filter
4345 add_objcflags $_flags $_cflags
4346 set_ccvars OBJC
4347
4348 probe_cc ld "$ld"
4349 ldflags_filter=$_flags_filter
4350 add_ldflags $_flags $_ldflags
4351 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4352 LD_O=${_ld_o-$LD_O}
4353 LD_LIB=${_ld_lib-$LD_LIB}
4354 LD_PATH=${_ld_path-$LD_PATH}
4355
4356 probe_cc hostld "$host_ld"
4357 host_ldflags_filter=$_flags_filter
4358 add_host_ldflags $_flags $_ldflags
4359 HOSTLD_O=${_ld_o-$HOSTLD_O}
4360
4361 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4362     probe_cc depcc "$dep_cc"
4363     CCDEP=${_DEPCMD:-$DEPCMD}
4364     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4365     DEPCCFLAGS=$_flags
4366 fi
4367
4368 if $ar 2>&1 | grep -q Microsoft; then
4369     arflags="-nologo"
4370     ar_o='-out:$@'
4371 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4372     arflags="rq"
4373     ar_o='$@'
4374 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4375     arflags='-Xany -r -c'
4376     ar_o='$@'
4377 elif $ar 2>&1 | grep -q "\[D\] "; then
4378     arflags="rcD"
4379     ar_o='$@'
4380 else
4381     arflags="rc"
4382     ar_o='$@'
4383 fi
4384
4385 add_cflags $extra_cflags
4386 add_cxxflags $extra_cxxflags
4387 add_objcflags $extra_objcflags
4388 add_asflags $extra_cflags
4389
4390 if test -n "$sysroot"; then
4391     case "$cc_type" in
4392         gcc|llvm_gcc|clang)
4393             add_cppflags --sysroot="$sysroot"
4394             add_ldflags --sysroot="$sysroot"
4395 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4396             add_cppflags -isysroot "$sysroot"
4397             add_ldflags -isysroot "$sysroot"
4398         ;;
4399         tms470)
4400             add_cppflags -I"$sysinclude"
4401             add_ldflags  --sysroot="$sysroot"
4402         ;;
4403     esac
4404 fi
4405
4406 if test "$cpu" = host; then
4407     enabled cross_compile &&
4408         die "--cpu=host makes no sense when cross-compiling."
4409
4410     case "$cc_type" in
4411         gcc|llvm_gcc)
4412             check_native(){
4413                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4414                 sed -n "/cc1.*$1=/{
4415                             s/.*$1=\\([^ ]*\\).*/\\1/
4416                             p
4417                             q
4418                         }" $TMPE
4419             }
4420             cpu=$(check_native -march || check_native -mcpu)
4421         ;;
4422         clang)
4423             check_native(){
4424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4425                 sed -n "/cc1.*-target-cpu /{
4426                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4427                             p
4428                             q
4429                         }" $TMPE
4430             }
4431             cpu=$(check_native -march)
4432         ;;
4433     esac
4434
4435     test "${cpu:-host}" = host &&
4436         die "--cpu=host not supported with compiler $cc"
4437 fi
4438
4439 # Deal with common $arch aliases
4440 case "$arch" in
4441     aarch64|arm64)
4442         arch="aarch64"
4443     ;;
4444     arm*|iPad*|iPhone*)
4445         arch="arm"
4446     ;;
4447     mips*|IP*)
4448         case "$arch" in
4449         *el)
4450             add_cppflags -EL
4451             add_ldflags -EL
4452         ;;
4453         *eb)
4454             add_cppflags -EB
4455             add_ldflags -EB
4456         ;;
4457         esac
4458         arch="mips"
4459     ;;
4460     parisc*|hppa*)
4461         arch="parisc"
4462     ;;
4463     "Power Macintosh"|ppc*|powerpc*)
4464         arch="ppc"
4465     ;;
4466     s390|s390x)
4467         arch="s390"
4468     ;;
4469     sh4|sh)
4470         arch="sh4"
4471     ;;
4472     sun4*|sparc*)
4473         arch="sparc"
4474     ;;
4475     tilegx|tile-gx)
4476         arch="tilegx"
4477     ;;
4478     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4479         arch="x86"
4480     ;;
4481 esac
4482
4483 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4484 enable $arch
4485
4486 # Add processor-specific flags
4487 if enabled aarch64; then
4488
4489     case $cpu in
4490         armv*)
4491             cpuflags="-march=$cpu"
4492         ;;
4493         *)
4494             cpuflags="-mcpu=$cpu"
4495         ;;
4496     esac
4497
4498 elif enabled alpha; then
4499
4500     cpuflags="-mcpu=$cpu"
4501
4502 elif enabled arm; then
4503
4504     check_arm_arch() {
4505         check_cpp_condition stddef.h \
4506             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4507             $cpuflags
4508     }
4509
4510     probe_arm_arch() {
4511         if   check_arm_arch 4;        then echo armv4
4512         elif check_arm_arch 4T;       then echo armv4t
4513         elif check_arm_arch 5;        then echo armv5
4514         elif check_arm_arch 5E;       then echo armv5e
4515         elif check_arm_arch 5T;       then echo armv5t
4516         elif check_arm_arch 5TE;      then echo armv5te
4517         elif check_arm_arch 5TEJ;     then echo armv5te
4518         elif check_arm_arch 6;        then echo armv6
4519         elif check_arm_arch 6J;       then echo armv6j
4520         elif check_arm_arch 6K;       then echo armv6k
4521         elif check_arm_arch 6Z;       then echo armv6z
4522         elif check_arm_arch 6ZK;      then echo armv6zk
4523         elif check_arm_arch 6T2;      then echo armv6t2
4524         elif check_arm_arch 7;        then echo armv7
4525         elif check_arm_arch 7A  7_A;  then echo armv7-a
4526         elif check_arm_arch 7S;       then echo armv7-a
4527         elif check_arm_arch 7R  7_R;  then echo armv7-r
4528         elif check_arm_arch 7M  7_M;  then echo armv7-m
4529         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4530         elif check_arm_arch 8A  8_A;  then echo armv8-a
4531         fi
4532     }
4533
4534     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4535
4536     case $cpu in
4537         armv*)
4538             cpuflags="-march=$cpu"
4539             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4540         ;;
4541         *)
4542             cpuflags="-mcpu=$cpu"
4543             case $cpu in
4544                 cortex-a*)                               subarch=armv7a  ;;
4545                 cortex-r*)                               subarch=armv7r  ;;
4546                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4547                 arm11*)                                  subarch=armv6   ;;
4548                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4549                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4550                 *)                             subarch=$(probe_arm_arch) ;;
4551             esac
4552         ;;
4553     esac
4554
4555     case "$subarch" in
4556         armv5t*)    enable fast_clz                ;;
4557         armv[6-8]*)
4558             enable fast_clz
4559             disabled fast_unaligned || enable fast_unaligned
4560             ;;
4561     esac
4562
4563 elif enabled avr32; then
4564
4565     case $cpu in
4566         ap7[02]0[0-2])
4567             subarch="avr32_ap"
4568             cpuflags="-mpart=$cpu"
4569         ;;
4570         ap)
4571             subarch="avr32_ap"
4572             cpuflags="-march=$cpu"
4573         ;;
4574         uc3[ab]*)
4575             subarch="avr32_uc"
4576             cpuflags="-mcpu=$cpu"
4577         ;;
4578         uc)
4579             subarch="avr32_uc"
4580             cpuflags="-march=$cpu"
4581         ;;
4582     esac
4583
4584 elif enabled bfin; then
4585
4586     cpuflags="-mcpu=$cpu"
4587
4588 elif enabled mips; then
4589
4590     cpuflags="-march=$cpu"
4591
4592     if [ "$cpu" != "generic" ]; then
4593         disable mips32r2
4594         disable mips32r5
4595         disable mips64r2
4596         disable mips32r6
4597         disable mips64r6
4598         disable loongson2
4599         disable loongson3
4600
4601         case $cpu in
4602             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4603                 enable mips32r2
4604                 disable msa
4605             ;;
4606             p5600|i6400|p6600)
4607                 disable mipsdsp
4608                 disable mipsdspr2
4609             ;;
4610             loongson*)
4611                 enable loongson2
4612                 enable loongson3
4613                 enable local_aligned_8 local_aligned_16 local_aligned_32
4614                 enable simd_align_16
4615                 enable fast_64bit
4616                 enable fast_clz
4617                 enable fast_cmov
4618                 enable fast_unaligned
4619                 disable aligned_stack
4620                 disable mipsfpu
4621                 disable mipsdsp
4622                 disable mipsdspr2
4623                 case $cpu in
4624                     loongson3*)
4625                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4626                     ;;
4627                     loongson2e)
4628                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4629                     ;;
4630                     loongson2f)
4631                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4632                     ;;
4633                 esac
4634             ;;
4635             *)
4636                 # Unknown CPU. Disable everything.
4637                 warn "unknown CPU. Disabling all MIPS optimizations."
4638                 disable mipsfpu
4639                 disable mipsdsp
4640                 disable mipsdspr2
4641                 disable msa
4642                 disable mmi
4643             ;;
4644         esac
4645
4646         case $cpu in
4647             24kc)
4648                 disable mipsfpu
4649                 disable mipsdsp
4650                 disable mipsdspr2
4651             ;;
4652             24kf*)
4653                 disable mipsdsp
4654                 disable mipsdspr2
4655             ;;
4656             24kec|34kc|1004kc)
4657                 disable mipsfpu
4658                 disable mipsdspr2
4659             ;;
4660             24kef*|34kf*|1004kf*)
4661                 disable mipsdspr2
4662             ;;
4663             74kc)
4664                 disable mipsfpu
4665             ;;
4666             p5600)
4667                 enable mips32r5
4668                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4669             ;;
4670             i6400)
4671                 enable mips64r6
4672                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4673             ;;
4674             p6600)
4675                 enable mips64r6
4676                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4677             ;;
4678         esac
4679     else
4680         # We do not disable anything. Is up to the user to disable the unwanted features.
4681         warn 'generic cpu selected'
4682     fi
4683
4684 elif enabled ppc; then
4685
4686     disable ldbrx
4687
4688     case $(tolower $cpu) in
4689         601|ppc601|powerpc601)
4690             cpuflags="-mcpu=601"
4691             disable altivec
4692         ;;
4693         603*|ppc603*|powerpc603*)
4694             cpuflags="-mcpu=603"
4695             disable altivec
4696         ;;
4697         604*|ppc604*|powerpc604*)
4698             cpuflags="-mcpu=604"
4699             disable altivec
4700         ;;
4701         g3|75*|ppc75*|powerpc75*)
4702             cpuflags="-mcpu=750"
4703             disable altivec
4704         ;;
4705         g4|745*|ppc745*|powerpc745*)
4706             cpuflags="-mcpu=7450"
4707             disable vsx
4708         ;;
4709         74*|ppc74*|powerpc74*)
4710             cpuflags="-mcpu=7400"
4711             disable vsx
4712         ;;
4713         g5|970|ppc970|powerpc970)
4714             cpuflags="-mcpu=970"
4715             disable vsx
4716         ;;
4717         power[3-6]*)
4718             cpuflags="-mcpu=$cpu"
4719             disable vsx
4720         ;;
4721         power[7-8]*)
4722             cpuflags="-mcpu=$cpu"
4723         ;;
4724         cell)
4725             cpuflags="-mcpu=cell"
4726             enable ldbrx
4727             disable vsx
4728         ;;
4729         e500mc)
4730             cpuflags="-mcpu=e500mc"
4731             disable altivec
4732         ;;
4733         e500v2)
4734             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4735             disable altivec
4736             disable dcbzl
4737         ;;
4738         e500)
4739             cpuflags="-mcpu=8540 -mhard-float"
4740             disable altivec
4741             disable dcbzl
4742         ;;
4743     esac
4744
4745 elif enabled sparc; then
4746
4747     case $cpu in
4748         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4749             cpuflags="-mcpu=$cpu"
4750         ;;
4751         ultrasparc*|niagara[234])
4752             cpuflags="-mcpu=$cpu"
4753         ;;
4754     esac
4755
4756 elif enabled x86; then
4757
4758     case $cpu in
4759         i[345]86|pentium)
4760             cpuflags="-march=$cpu"
4761             disable i686
4762             disable mmx
4763         ;;
4764         # targets that do NOT support nopl and conditional mov (cmov)
4765         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4766             cpuflags="-march=$cpu"
4767             disable i686
4768         ;;
4769         # targets that do support nopl and conditional mov (cmov)
4770         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4771         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4772         |amdfam10|barcelona|b[dt]ver*|znver*)
4773             cpuflags="-march=$cpu"
4774             enable i686
4775             enable fast_cmov
4776         ;;
4777         # targets that do support conditional mov but on which it's slow
4778         pentium4|pentium4m|prescott|nocona)
4779             cpuflags="-march=$cpu"
4780             enable i686
4781             disable fast_cmov
4782         ;;
4783     esac
4784
4785 fi
4786
4787 if [ "$cpu" != generic ]; then
4788     add_cflags  $cpuflags
4789     add_asflags $cpuflags
4790     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4791 fi
4792
4793 # compiler sanity check
4794 check_exec <<EOF
4795 int main(void){ return 0; }
4796 EOF
4797 if test "$?" != 0; then
4798     echo "$cc is unable to create an executable file."
4799     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4800         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4801         echo "Only do this if you know what cross compiling means."
4802     fi
4803     die "C compiler test failed."
4804 fi
4805
4806 add_cppflags -D_ISOC99_SOURCE
4807 add_cxxflags -D__STDC_CONSTANT_MACROS
4808 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4809
4810 # some compilers silently accept -std=c11, so we also need to check that the
4811 # version macro is defined properly
4812 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4813     add_cflags -std=c11
4814 else
4815     check_cflags -std=c99
4816 fi
4817
4818 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4819 #include <stdlib.h>
4820 EOF
4821 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4822 #include <stdlib.h>
4823 EOF
4824
4825 add_host_cppflags -D_ISOC99_SOURCE
4826 check_host_cflags -std=c99
4827 check_host_cflags -Wall
4828 check_host_cflags $host_cflags_speed
4829
4830 check_64bit(){
4831     arch32=$1
4832     arch64=$2
4833     expr=$3
4834     check_code cc "" "int test[2*($expr) - 1]" &&
4835         subarch=$arch64 || subarch=$arch32
4836 }
4837
4838 case "$arch" in
4839     aarch64|alpha|ia64)
4840         spic=$shared
4841     ;;
4842     mips)
4843         check_64bit mips mips64 '_MIPS_SIM > 1'
4844         spic=$shared
4845     ;;
4846     parisc)
4847         check_64bit parisc parisc64 'sizeof(void *) > 4'
4848         spic=$shared
4849     ;;
4850     ppc)
4851         check_64bit ppc ppc64 'sizeof(void *) > 4'
4852         spic=$shared
4853     ;;
4854     s390)
4855         check_64bit s390 s390x 'sizeof(void *) > 4'
4856         spic=$shared
4857     ;;
4858     sparc)
4859         check_64bit sparc sparc64 'sizeof(void *) > 4'
4860         spic=$shared
4861     ;;
4862     x86)
4863         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4864         # Treat x32 as x64 for now. Note it also needs spic=$shared
4865         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4866             subarch=x86_64
4867         if test "$subarch" = "x86_64"; then
4868             spic=$shared
4869         fi
4870     ;;