configure: define posix source on cygwin
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94   --install-name-dir=DIR   Darwin directory name for installed targets
95
96 Licensing options:
97   --enable-gpl             allow use of GPL code, the resulting libs
98                            and binaries will be under GPL [no]
99   --enable-version3        upgrade (L)GPL to version 3 [no]
100   --enable-nonfree         allow use of nonfree code, the resulting libs
101                            and binaries will be unredistributable [no]
102
103 Configuration options:
104   --disable-static         do not build static libraries [no]
105   --enable-shared          build shared libraries [no]
106   --enable-small           optimize for size instead of speed
107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
108   --enable-gray            enable full grayscale support (slower color)
109   --disable-swscale-alpha  disable alpha channel support in swscale
110   --disable-all            disable building components, libraries and programs
111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
112   --enable-raise-major     increase major version numbers in sonames [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
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --enable-avisynth        enable reading of AviSynth script files [no]
205   --disable-bzlib          disable bzlib [autodetect]
206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
207   --enable-frei0r          enable frei0r video filtering [no]
208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
209                            if openssl, librtmp or gmp is not used [no]
210   --enable-gmp             enable gmp, needed for rtmp(t)e support
211                            if openssl or librtmp is not used [no]
212   --enable-gnutls          enable gnutls, needed for https support
213                            if openssl is not used [no]
214   --disable-iconv          disable iconv [autodetect]
215   --enable-jni             enable JNI support [no]
216   --enable-ladspa          enable LADSPA audio filtering [no]
217   --enable-libass          enable libass subtitles rendering,
218                            needed for subtitles and ass filter [no]
219   --enable-libbluray       enable BluRay reading using libbluray [no]
220   --enable-libbs2b         enable bs2b DSP library [no]
221   --enable-libcaca         enable textual display using libcaca [no]
222   --enable-libcelt         enable CELT decoding via libcelt [no]
223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
225                            and libraw1394 [no]
226   --enable-libebur128      enable libebur128 for EBU R128 measurement,
227                            needed for loudnorm filter [no]
228   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
229   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
230   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
231   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
232   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
233   --enable-libgme          enable Game Music Emu via libgme [no]
234   --enable-libgsm          enable GSM de/encoding via libgsm [no]
235   --enable-libiec61883     enable iec61883 via libiec61883 [no]
236   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
237   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
238   --enable-libmodplug      enable ModPlug via libmodplug [no]
239   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
240   --enable-libnut          enable NUT (de)muxing via libnut,
241                            native (de)muxer exists [no]
242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
244   --enable-libopencv       enable video filtering via libopencv [no]
245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
248   --enable-libopus         enable Opus de/encoding via libopus [no]
249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
250   --enable-librubberband   enable rubberband needed for rubberband filter [no]
251   --enable-librtmp         enable RTMP[E] support via librtmp [no]
252   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
256   --enable-libsoxr         enable Include libsoxr resampling [no]
257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
258   --enable-libssh          enable SFTP protocol via libssh [no]
259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
260   --enable-libtheora       enable Theora encoding via libtheora [no]
261   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
262   --enable-libv4l2         enable libv4l2/v4l-utils [no]
263   --enable-libvidstab      enable video stabilization using vid.stab [no]
264   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
265   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
266                            native implementation exists [no]
267   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
268   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
269   --enable-libwebp         enable WebP encoding via libwebp [no]
270   --enable-libx264         enable H.264 encoding via x264 [no]
271   --enable-libx265         enable HEVC encoding via x265 [no]
272   --enable-libxavs         enable AVS encoding via xavs [no]
273   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
274   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
275   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
276   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
277   --enable-libxvid         enable Xvid encoding via xvidcore,
278                            native MPEG-4/Xvid encoder exists [no]
279   --enable-libzimg         enable z.lib, needed for zscale filter [no]
280   --enable-libzmq          enable message passing via libzmq [no]
281   --enable-libzvbi         enable teletext support via libzvbi [no]
282   --disable-lzma           disable lzma [autodetect]
283   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
284   --enable-mediacodec      enable Android MediaCodec support [no]
285   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
286   --enable-openal          enable OpenAL 1.1 capture support [no]
287   --enable-opencl          enable OpenCL code
288   --enable-opengl          enable OpenGL rendering [no]
289   --enable-openssl         enable openssl, needed for https support
290                            if gnutls is not used [no]
291   --disable-schannel       disable SChannel SSP, needed for TLS support on
292                            Windows if openssl and gnutls are not used [autodetect]
293   --disable-sdl2           disable sdl2 [autodetect]
294   --disable-securetransport disable Secure Transport, needed for TLS support
295                            on OSX if openssl and gnutls are not used [autodetect]
296   --enable-x11grab         enable X11 grabbing (legacy) [no]
297   --disable-xlib           disable xlib [autodetect]
298   --disable-zlib           disable zlib [autodetect]
299
300   The following libraries provide various hardware acceleration features:
301   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
302   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
303   --enable-cuvid           enable Nvidia CUVID support [autodetect]
304   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
305   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
306   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
307   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
308   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
309   --disable-nvenc          disable Nvidia video encoding code [autodetect]
310   --enable-omx             enable OpenMAX IL code [no]
311   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
312   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
313   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
314   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
315   --disable-videotoolbox   disable VideoToolbox code [autodetect]
316
317 Toolchain options:
318   --arch=ARCH              select architecture [$arch]
319   --cpu=CPU                select the minimum required CPU (affects
320                            instruction selection, may crash on older CPUs)
321   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
322   --progs-suffix=SUFFIX    program name suffix []
323   --enable-cross-compile   assume a cross-compiler is used
324   --sysroot=PATH           root of cross-build tree
325   --sysinclude=PATH        location of cross-build system headers
326   --target-os=OS           compiler targets OS [$target_os]
327   --target-exec=CMD        command to run executables on target
328   --target-path=DIR        path to view of build directory on target
329   --target-samples=DIR     path to samples directory on target
330   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
331   --toolchain=NAME         set tool defaults according to NAME
332   --nm=NM                  use nm tool NM [$nm_default]
333   --ar=AR                  use archive tool AR [$ar_default]
334   --as=AS                  use assembler AS [$as_default]
335   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
336   --strip=STRIP            use strip tool STRIP [$strip_default]
337   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
338   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
339   --cc=CC                  use C compiler CC [$cc_default]
340   --cxx=CXX                use C compiler CXX [$cxx_default]
341   --objcc=OCC              use ObjC compiler OCC [$cc_default]
342   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
343   --ld=LD                  use linker LD [$ld_default]
344   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
345   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
346   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
347   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
348   --host-cc=HOSTCC         use host C compiler HOSTCC
349   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
350   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
351   --host-ld=HOSTLD         use host linker HOSTLD
352   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
353   --host-libs=HLIBS        use libs HLIBS when linking for host
354   --host-os=OS             compiler host OS [$target_os]
355   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
356   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
357   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
358   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
359   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
360   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
361   --extra-libs=ELIBS       add ELIBS [$ELIBS]
362   --extra-version=STRING   version string suffix []
363   --optflags=OPTFLAGS      override optimization-related compiler flags
364   --build-suffix=SUFFIX    library name suffix []
365   --enable-pic             build position-independent code
366   --enable-thumb           compile for Thumb instruction set
367   --enable-lto             use link-time optimization
368   --env="ENV=override"     override the environment variables
369
370 Advanced options (experts only):
371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
372   --custom-allocator=NAME  use a supported custom allocator
373   --disable-symver         disable symbol versioning
374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
375   --disable-safe-bitstream-reader
376                            disable buffer boundary checking in bitreaders
377                            (faster, but may crash)
378   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
379   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
380
381 Optimization options (experts only):
382   --disable-asm            disable all assembly optimizations
383   --disable-altivec        disable AltiVec optimizations
384   --disable-vsx            disable VSX optimizations
385   --disable-power8         disable POWER8 optimizations
386   --disable-amd3dnow       disable 3DNow! optimizations
387   --disable-amd3dnowext    disable 3DNow! extended optimizations
388   --disable-mmx            disable MMX optimizations
389   --disable-mmxext         disable MMXEXT optimizations
390   --disable-sse            disable SSE optimizations
391   --disable-sse2           disable SSE2 optimizations
392   --disable-sse3           disable SSE3 optimizations
393   --disable-ssse3          disable SSSE3 optimizations
394   --disable-sse4           disable SSE4 optimizations
395   --disable-sse42          disable SSE4.2 optimizations
396   --disable-avx            disable AVX optimizations
397   --disable-xop            disable XOP optimizations
398   --disable-fma3           disable FMA3 optimizations
399   --disable-fma4           disable FMA4 optimizations
400   --disable-avx2           disable AVX2 optimizations
401   --disable-aesni          disable AESNI optimizations
402   --disable-armv5te        disable armv5te optimizations
403   --disable-armv6          disable armv6 optimizations
404   --disable-armv6t2        disable armv6t2 optimizations
405   --disable-vfp            disable VFP optimizations
406   --disable-neon           disable NEON optimizations
407   --disable-inline-asm     disable use of inline assembly
408   --disable-yasm           disable use of nasm/yasm assembly
409   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
410   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
411   --disable-msa            disable MSA optimizations
412   --disable-mipsfpu        disable floating point MIPS optimizations
413   --disable-mmi            disable Loongson SIMD optimizations
414   --disable-fast-unaligned consider unaligned accesses slow
415
416 Developer options (useful when working on FFmpeg itself):
417   --disable-debug          disable debugging symbols
418   --enable-debug=LEVEL     set the debug level [$debuglevel]
419   --disable-optimizations  disable compiler optimizations
420   --enable-extra-warnings  enable more compiler warnings
421   --disable-stripping      disable stripping of executables and shared libraries
422   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
423                            2 causes a slowdown at runtime.
424   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
425   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
426                            leaks and errors, using the specified valgrind binary.
427                            Cannot be combined with --target-exec
428   --enable-ftrapv          Trap arithmetic overflows
429   --samples=PATH           location of test samples for FATE, if not set use
430                            \$FATE_SAMPLES at make invocation time.
431   --enable-neon-clobber-test check NEON registers for clobbering (should be
432                            used only for debugging purposes)
433   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
434                            should be used only for debugging purposes)
435   --enable-random          randomly enable/disable components
436   --disable-random
437   --enable-random=LIST     randomly enable/disable specific components or
438   --disable-random=LIST    component groups. LIST is a comma-separated list
439                            of NAME[:PROB] entries where NAME is a component
440                            (group) and PROB the probability associated with
441                            NAME (default 0.5).
442   --random-seed=VALUE      seed value for --enable/disable-random
443   --disable-valgrind-backtrace do not print a backtrace under Valgrind
444                            (only applies to --disable-optimizations builds)
445
446 NOTE: Object files are built at the place where configure is launched.
447 EOF
448   exit 0
449 }
450
451 quotes='""'
452 if test -t 1 && which tput >/dev/null 2>&1; then
453     ncolors=$(tput colors)
454     if test -n "$ncolors" && test $ncolors -ge 8; then
455         bold_color=$(tput bold)
456         warn_color=$(tput setaf 3)
457         error_color=$(tput setaf 1)
458         reset_color=$(tput sgr0)
459     fi
460     # 72 used instead of 80 since that's the default of pr
461     ncols=$(tput cols)
462 fi
463 : ${ncols:=72}
464
465 log(){
466     echo "$@" >> $logfile
467 }
468
469 log_file(){
470     log BEGIN $1
471     pr -n -t $1 >> $logfile
472     log END $1
473 }
474
475 warn(){
476     log "WARNING: $*"
477     WARNINGS="${WARNINGS}WARNING: $*\n"
478 }
479
480 die(){
481     log "$@"
482     echo "$error_color$bold_color$@$reset_color"
483     cat <<EOF
484
485 If you think configure made a mistake, make sure you are using the latest
486 version from Git.  If the latest version fails, report the problem to the
487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
488 EOF
489     if disabled logging; then
490         cat <<EOF
491 Rerun configure with logging enabled (do not use --disable-logging), and
492 include the log this produces with your report.
493 EOF
494     else
495         cat <<EOF
496 Include the log file "$logfile" produced by configure as this will help
497 solve the problem.
498 EOF
499     fi
500     exit 1
501 }
502
503 # Avoid locale weirdness, besides we really just want to translate ASCII.
504 toupper(){
505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
506 }
507
508 tolower(){
509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
510 }
511
512 c_escape(){
513     echo "$*" | sed 's/["\\]/\\\0/g'
514 }
515
516 sh_quote(){
517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
519     echo "$v"
520 }
521
522 cleanws(){
523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
524 }
525
526 filter(){
527     pat=$1
528     shift
529     for v; do
530         eval "case $v in $pat) echo $v ;; esac"
531     done
532 }
533
534 filter_out(){
535     pat=$1
536     shift
537     for v; do
538         eval "case $v in $pat) ;; *) echo $v ;; esac"
539     done
540 }
541
542 map(){
543     m=$1
544     shift
545     for v; do eval $m; done
546 }
547
548 add_suffix(){
549     suffix=$1
550     shift
551     for v; do echo ${v}${suffix}; done
552 }
553
554 set_all(){
555     value=$1
556     shift
557     for var in $*; do
558         eval $var=$value
559     done
560 }
561
562 set_weak(){
563     value=$1
564     shift
565     for var; do
566         eval : \${$var:=$value}
567     done
568 }
569
570 sanitize_var_name(){
571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
572 }
573
574 set_safe(){
575     var=$1
576     shift
577     eval $(sanitize_var_name "$var")='$*'
578 }
579
580 get_safe(){
581     eval echo \$$(sanitize_var_name "$1")
582 }
583
584 pushvar(){
585     for pvar in $*; do
586         eval level=\${${pvar}_level:=0}
587         eval ${pvar}_${level}="\$$pvar"
588         eval ${pvar}_level=$(($level+1))
589     done
590 }
591
592 popvar(){
593     for pvar in $*; do
594         eval level=\${${pvar}_level:-0}
595         test $level = 0 && continue
596         eval level=$(($level-1))
597         eval $pvar="\${${pvar}_${level}}"
598         eval ${pvar}_level=$level
599         eval unset ${pvar}_${level}
600     done
601 }
602
603 enable(){
604     set_all yes $*
605 }
606
607 disable(){
608     set_all no $*
609 }
610
611 enable_weak(){
612     set_weak yes $*
613 }
614
615 disable_weak(){
616     set_weak no $*
617 }
618
619 enable_safe(){
620     for var; do
621         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
622     done
623 }
624
625 disable_safe(){
626     for var; do
627         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
628     done
629 }
630
631 do_enable_deep(){
632     for var; do
633         enabled $var && continue
634         eval sel="\$${var}_select"
635         eval sgs="\$${var}_suggest"
636         pushvar var sgs
637         enable_deep $sel
638         popvar sgs
639         enable_deep_weak $sgs
640         popvar var
641     done
642 }
643
644 enable_deep(){
645     do_enable_deep $*
646     enable $*
647 }
648
649 enable_deep_weak(){
650     for var; do
651         disabled $var && continue
652         pushvar var
653         do_enable_deep $var
654         popvar var
655         enable_weak $var
656     done
657 }
658
659 enabled(){
660     test "${1#!}" = "$1" && op='=' || op=!=
661     eval test "x\$${1#!}" $op "xyes"
662 }
663
664 disabled(){
665     test "${1#!}" = "$1" && op='=' || op=!=
666     eval test "x\$${1#!}" $op "xno"
667 }
668
669 enabled_all(){
670     for opt; do
671         enabled $opt || return 1
672     done
673 }
674
675 disabled_all(){
676     for opt; do
677         disabled $opt || return 1
678     done
679 }
680
681 enabled_any(){
682     for opt; do
683         enabled $opt && return 0
684     done
685 }
686
687 disabled_any(){
688     for opt; do
689         disabled $opt && return 0
690     done
691     return 1
692 }
693
694 set_default(){
695     for opt; do
696         eval : \${$opt:=\$${opt}_default}
697     done
698 }
699
700 is_in(){
701     value=$1
702     shift
703     for var in $*; do
704         [ $var = $value ] && return 0
705     done
706     return 1
707 }
708
709 do_check_deps(){
710     for cfg; do
711         cfg="${cfg#!}"
712         enabled ${cfg}_checking && die "Circular dependency for $cfg."
713         disabled ${cfg}_checking && continue
714         enable ${cfg}_checking
715         append allopts $cfg
716
717         eval dep_all="\$${cfg}_deps"
718         eval dep_any="\$${cfg}_deps_any"
719         eval dep_sel="\$${cfg}_select"
720         eval dep_sgs="\$${cfg}_suggest"
721         eval dep_ifa="\$${cfg}_if"
722         eval dep_ifn="\$${cfg}_if_any"
723
724         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
725         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
726         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
727
728         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
729         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
730         enabled_all  $dep_all || disable $cfg
731         enabled_any  $dep_any || disable $cfg
732         disabled_any $dep_sel && disable $cfg
733
734         if enabled $cfg; then
735             enable_deep $dep_sel
736             enable_deep_weak $dep_sgs
737         fi
738
739         disable ${cfg}_checking
740     done
741 }
742
743 check_deps(){
744     unset allopts
745
746     do_check_deps "$@"
747
748     for cfg in $allopts; do
749         enabled $cfg || continue
750         eval dep_extralibs="\$${cfg}_extralibs"
751         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
752     done
753 }
754
755 print_config(){
756     pfx=$1
757     files=$2
758     shift 2
759     map 'eval echo "$v \${$v:-no}"' "$@" |
760     awk "BEGIN { split(\"$files\", files) }
761         {
762             c = \"$pfx\" toupper(\$1);
763             v = \$2;
764             sub(/yes/, 1, v);
765             sub(/no/,  0, v);
766             for (f in files) {
767                 file = files[f];
768                 if (file ~ /\\.h\$/) {
769                     printf(\"#define %s %d\\n\", c, v) >>file;
770                 } else if (file ~ /\\.asm\$/) {
771                     printf(\"%%define %s %d\\n\", c, v) >>file;
772                 } else if (file ~ /\\.mak\$/) {
773                     n = -v ? \"\" : \"!\";
774                     printf(\"%s%s=yes\\n\", n, c) >>file;
775                 } else if (file ~ /\\.texi\$/) {
776                     pre = -v ? \"\" : \"@c \";
777                     yesno = \$2;
778                     c2 = tolower(c);
779                     gsub(/_/, \"-\", c2);
780                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
781                 }
782             }
783         }"
784 }
785
786 print_enabled(){
787     suf=$1
788     shift
789     for v; do
790         enabled $v && printf "%s\n" ${v%$suf}
791     done
792 }
793
794 append(){
795     var=$1
796     shift
797     eval "$var=\"\$$var $*\""
798 }
799
800 prepend(){
801     var=$1
802     shift
803     eval "$var=\"$* \$$var\""
804 }
805
806 unique(){
807     var=$1
808     uniq_list=""
809     for tok in $(eval echo \$$var); do
810         uniq_list="$(filter_out $tok $uniq_list) $tok"
811     done
812     eval "$var=\"${uniq_list}\""
813 }
814
815 add_cppflags(){
816     append CPPFLAGS "$@"
817 }
818
819 add_cflags(){
820     append CFLAGS $($cflags_filter "$@")
821 }
822
823 add_cxxflags(){
824     append CXXFLAGS $($cflags_filter "$@")
825 }
826
827 add_asflags(){
828     append ASFLAGS $($asflags_filter "$@")
829 }
830
831 add_objcflags(){
832     append OBJCFLAGS $($objcflags_filter "$@")
833 }
834
835 add_ldflags(){
836     append LDFLAGS $($ldflags_filter "$@")
837 }
838
839 add_ldexeflags(){
840     append LDEXEFLAGS $($ldflags_filter "$@")
841 }
842
843 add_ldlibflags(){
844     append LDLIBFLAGS $($ldflags_filter "$@")
845 }
846
847 add_stripflags(){
848     append ASMSTRIPFLAGS "$@"
849 }
850
851 add_extralibs(){
852     prepend extralibs $($ldflags_filter "$@")
853 }
854
855 add_host_cppflags(){
856     append host_cppflags "$@"
857 }
858
859 add_host_cflags(){
860     append host_cflags $($host_cflags_filter "$@")
861 }
862
863 add_host_ldflags(){
864     append host_ldflags $($host_ldflags_filter "$@")
865 }
866
867 add_compat(){
868     append compat_objs $1
869     shift
870     map 'add_cppflags -D$v' "$@"
871 }
872
873 check_cmd(){
874     log "$@"
875     "$@" >> $logfile 2>&1
876 }
877
878 check_stat(){
879     log check_stat "$@"
880     stat "$1" >> $logfile 2>&1
881 }
882
883 cc_o(){
884     eval printf '%s\\n' $CC_O
885 }
886
887 cc_e(){
888     eval printf '%s\\n' $CC_E
889 }
890
891 check_cc(){
892     log check_cc "$@"
893     cat > $TMPC
894     log_file $TMPC
895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
896 }
897
898 check_cxx(){
899     log check_cxx "$@"
900     cat > $TMPCPP
901     log_file $TMPCPP
902     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
903 }
904
905 check_objcc(){
906     log check_objcc "$@"
907     cat > $TMPM
908     log_file $TMPM
909     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
910 }
911
912 check_cpp(){
913     log check_cpp "$@"
914     cat > $TMPC
915     log_file $TMPC
916     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
917 }
918
919 as_o(){
920     eval printf '%s\\n' $AS_O
921 }
922
923 check_as(){
924     log check_as "$@"
925     cat > $TMPS
926     log_file $TMPS
927     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
928 }
929
930 check_inline_asm(){
931     log check_inline_asm "$@"
932     name="$1"
933     code="$2"
934     shift 2
935     disable $name
936     check_cc "$@" <<EOF && enable $name
937 void foo(void){ __asm__ volatile($code); }
938 EOF
939 }
940
941 check_inline_asm_flags(){
942     log check_inline_asm_flags "$@"
943     name="$1"
944     code="$2"
945     flags=''
946     shift 2
947     while [ "$1" != "" ]; do
948       append flags $1
949       shift
950     done;
951     disable $name
952     cat > $TMPC <<EOF
953 void foo(void){ __asm__ volatile($code); }
954 EOF
955     log_file $TMPC
956     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
957     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
958 }
959
960 check_insn(){
961     log check_insn "$@"
962     check_inline_asm ${1}_inline "\"$2\""
963     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
964 }
965
966 check_yasm(){
967     log check_yasm "$@"
968     echo "$1" > $TMPS
969     log_file $TMPS
970     shift 1
971     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
972 }
973
974 ld_o(){
975     eval printf '%s\\n' $LD_O
976 }
977
978 check_ld(){
979     log check_ld "$@"
980     type=$1
981     shift 1
982     flags=$(filter_out '-l*|*.so' $@)
983     libs=$(filter '-l*|*.so' $@)
984     check_$type $($cflags_filter $flags) || return
985     flags=$($ldflags_filter $flags)
986     libs=$($ldflags_filter $libs)
987     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
988 }
989
990 print_include(){
991     hdr=$1
992     test "${hdr%.h}" = "${hdr}" &&
993         echo "#include $hdr"    ||
994         echo "#include <$hdr>"
995 }
996
997 check_code(){
998     log check_code "$@"
999     check=$1
1000     headers=$2
1001     code=$3
1002     shift 3
1003     {
1004         for hdr in $headers; do
1005             print_include $hdr
1006         done
1007         echo "int main(void) { $code; return 0; }"
1008     } | check_$check "$@"
1009 }
1010
1011 check_cppflags(){
1012     log check_cppflags "$@"
1013     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1014 int x;
1015 EOF
1016 }
1017
1018 test_cflags(){
1019     log test_cflags "$@"
1020     set -- $($cflags_filter "$@")
1021     check_cc "$@" <<EOF
1022 int x;
1023 EOF
1024 }
1025
1026 check_cflags(){
1027     log check_cflags "$@"
1028     test_cflags "$@" && add_cflags "$@"
1029 }
1030
1031 check_cxxflags(){
1032     log check_cxxflags "$@"
1033     set -- $($cflags_filter "$@")
1034     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1035 int x;
1036 EOF
1037 }
1038
1039 test_objcflags(){
1040     log test_cflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_objcc "$@" <<EOF
1043 int x;
1044 EOF
1045 }
1046
1047 check_objcflags(){
1048     log check_cflags "$@"
1049     test_objcflags "$@" && add_objcflags "$@"
1050 }
1051
1052 test_ldflags(){
1053     log test_ldflags "$@"
1054     check_ld "cc" "$@" <<EOF
1055 int main(void){ return 0; }
1056 EOF
1057 }
1058
1059 check_ldflags(){
1060     log check_ldflags "$@"
1061     test_ldflags "$@" && add_ldflags "$@"
1062 }
1063
1064 test_stripflags(){
1065     log test_stripflags "$@"
1066     # call check_cc to get a fresh TMPO
1067     check_cc <<EOF
1068 int main(void) { return 0; }
1069 EOF
1070     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1071 }
1072
1073 check_stripflags(){
1074     log check_stripflags "$@"
1075     test_stripflags "$@" && add_stripflags "$@"
1076 }
1077
1078 check_header(){
1079     log check_header "$@"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     check_cpp "$@" <<EOF && enable_safe $header
1084 #include <$header>
1085 int x;
1086 EOF
1087 }
1088
1089 check_header_objcc(){
1090     log check_header_objcc "$@"
1091     rm -f -- "$TMPO"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     {
1096        echo "#include <$header>"
1097        echo "int main(void) { return 0; }"
1098     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1099 }
1100
1101 check_func(){
1102     log check_func "$@"
1103     func=$1
1104     shift
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 extern int $func();
1108 int main(void){ $func(); }
1109 EOF
1110 }
1111
1112 check_complexfunc(){
1113     log check_complexfunc "$@"
1114     func=$1
1115     narg=$2
1116     shift 2
1117     test $narg = 2 && args="f, g" || args="f * I"
1118     disable $func
1119     check_ld "cc" "$@" <<EOF && enable $func
1120 #include <complex.h>
1121 #include <math.h>
1122 float foo(complex float f, complex float g) { return $func($args); }
1123 int main(void){ return (int) foo; }
1124 EOF
1125 }
1126
1127 check_mathfunc(){
1128     log check_mathfunc "$@"
1129     func=$1
1130     narg=$2
1131     shift 2
1132     test $narg = 2 && args="f, g" || args="f"
1133     disable $func
1134     check_ld "cc" "$@" <<EOF && enable $func
1135 #include <math.h>
1136 float foo(float f, float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_func_headers(){
1142     log check_func_headers "$@"
1143     headers=$1
1144     funcs=$2
1145     shift 2
1146     {
1147         for hdr in $headers; do
1148             print_include $hdr
1149         done
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1155 }
1156
1157 check_class_headers_cpp(){
1158     log check_class_headers_cpp "$@"
1159     headers=$1
1160     classes=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             echo "#include <$hdr>"
1165         done
1166         echo "int main(void) { "
1167         i=1
1168         for class in $classes; do
1169             echo "$class obj$i;"
1170             i=$(expr $i + 1)
1171         done
1172         echo "return 0; }"
1173     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1174 }
1175
1176 check_cpp_condition(){
1177     log check_cpp_condition "$@"
1178     header=$1
1179     condition=$2
1180     shift 2
1181     check_cpp "$@" <<EOF
1182 #include <$header>
1183 #if !($condition)
1184 #error "unsatisfied condition: $condition"
1185 #endif
1186 EOF
1187 }
1188
1189 check_lib(){
1190     log check_lib "$@"
1191     header="$1"
1192     func="$2"
1193     shift 2
1194     check_header $header && check_func $func "$@" && add_extralibs "$@"
1195 }
1196
1197 check_lib2(){
1198     log check_lib2 "$@"
1199     headers="$1"
1200     funcs="$2"
1201     shift 2
1202     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1203 }
1204
1205 check_lib_cpp(){
1206     log check_lib_cpp "$@"
1207     headers="$1"
1208     classes="$2"
1209     shift 2
1210     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1211 }
1212
1213 check_pkg_config(){
1214     log check_pkg_config "$@"
1215     pkgandversion="$1"
1216     pkg="${1%% *}"
1217     headers="$2"
1218     funcs="$3"
1219     shift 3
1220     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1221     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1222     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1223     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1224         set_safe "${pkg}_cflags" $pkg_cflags   &&
1225         set_safe "${pkg}_libs"   $pkg_libs
1226 }
1227
1228 check_exec(){
1229     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1230 }
1231
1232 check_exec_crash(){
1233     code=$(cat)
1234
1235     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1236     # are safe but may not be available everywhere.  Thus we use
1237     # raise(SIGTERM) instead.  The check is run in a subshell so we
1238     # can redirect the "Terminated" message from the shell.  SIGBUS
1239     # is not defined by standard C so it is used conditionally.
1240
1241     (check_exec "$@") >> $logfile 2>&1 <<EOF
1242 #include <signal.h>
1243 static void sighandler(int sig){
1244     raise(SIGTERM);
1245 }
1246 int foo(void){
1247     $code
1248 }
1249 int (*func_ptr)(void) = foo;
1250 int main(void){
1251     signal(SIGILL, sighandler);
1252     signal(SIGFPE, sighandler);
1253     signal(SIGSEGV, sighandler);
1254 #ifdef SIGBUS
1255     signal(SIGBUS, sighandler);
1256 #endif
1257     return func_ptr();
1258 }
1259 EOF
1260 }
1261
1262 check_type(){
1263     log check_type "$@"
1264     headers=$1
1265     type=$2
1266     shift 2
1267     disable_safe "$type"
1268     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1269 }
1270
1271 check_struct(){
1272     log check_struct "$@"
1273     headers=$1
1274     struct=$2
1275     member=$3
1276     shift 3
1277     disable_safe "${struct}_${member}"
1278     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1279         enable_safe "${struct}_${member}"
1280 }
1281
1282 check_builtin(){
1283     log check_builtin "$@"
1284     name=$1
1285     headers=$2
1286     builtin=$3
1287     shift 3
1288     disable "$name"
1289     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1290 }
1291
1292 check_compile_assert(){
1293     log check_compile_assert "$@"
1294     name=$1
1295     headers=$2
1296     condition=$3
1297     shift 3
1298     disable "$name"
1299     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1300 }
1301
1302 require(){
1303     name="$1"
1304     header="$2"
1305     func="$3"
1306     shift 3
1307     check_lib $header $func "$@" || die "ERROR: $name not found"
1308 }
1309
1310 require2(){
1311     name="$1"
1312     headers="$2"
1313     func="$3"
1314     shift 3
1315     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1316 }
1317
1318 require_cpp(){
1319     name="$1"
1320     headers="$2"
1321     classes="$3"
1322     shift 3
1323     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1324 }
1325
1326 use_pkg_config(){
1327     pkg="$1"
1328     check_pkg_config "$@" || return 1
1329     add_cflags    $(get_safe "${pkg}_cflags")
1330     add_extralibs $(get_safe "${pkg}_libs")
1331 }
1332
1333 require_pkg_config(){
1334     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1335 }
1336
1337 require_libfreetype(){
1338     log require_libfreetype "$@"
1339     pkg="freetype2"
1340     check_cmd $pkg_config --exists --print-errors $pkg \
1341       || die "ERROR: $pkg not found"
1342     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1343     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1344     {
1345         echo "#include <ft2build.h>"
1346         echo "#include FT_FREETYPE_H"
1347         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1348         echo "int main(void) { return 0; }"
1349     } | check_ld "cc" $pkg_cflags $pkg_libs \
1350       && set_safe "${pkg}_cflags" $pkg_cflags \
1351       && set_safe "${pkg}_libs"   $pkg_libs \
1352       || die "ERROR: $pkg not found"
1353     add_cflags    $(get_safe "${pkg}_cflags")
1354     add_extralibs $(get_safe "${pkg}_libs")
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1409     mkdir -p "$(dirname $2)"
1410     $cp_f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_dir_cmd_example
1451     avio_reading_example
1452     decoding_encoding_example
1453     demuxing_decoding_example
1454     extract_mvs_example
1455     filter_audio_example
1456     filtering_audio_example
1457     filtering_video_example
1458     http_multiclient_example
1459     metadata_example
1460     muxing_example
1461     qsvdec_example
1462     remuxing_example
1463     resampling_audio_example
1464     scaling_video_example
1465     transcode_aac_example
1466     transcoding_example
1467 "
1468
1469 EXTERNAL_LIBRARY_LIST="
1470     avisynth
1471     bzlib
1472     chromaprint
1473     crystalhd
1474     decklink
1475     frei0r
1476     gcrypt
1477     gmp
1478     gnutls
1479     iconv
1480     jni
1481     ladspa
1482     libass
1483     libbluray
1484     libbs2b
1485     libcaca
1486     libcdio
1487     libcelt
1488     libdc1394
1489     libebur128
1490     libfdk_aac
1491     libflite
1492     libfontconfig
1493     libfreetype
1494     libfribidi
1495     libgme
1496     libgsm
1497     libiec61883
1498     libilbc
1499     libkvazaar
1500     libmodplug
1501     libmp3lame
1502     libnut
1503     libopencore_amrnb
1504     libopencore_amrwb
1505     libopencv
1506     libopenh264
1507     libopenjpeg
1508     libopenmpt
1509     libopus
1510     libpulse
1511     librtmp
1512     librubberband
1513     libschroedinger
1514     libshine
1515     libsmbclient
1516     libsnappy
1517     libsoxr
1518     libspeex
1519     libssh
1520     libtesseract
1521     libtheora
1522     libtwolame
1523     libv4l2
1524     libvidstab
1525     libvo_amrwbenc
1526     libvorbis
1527     libvpx
1528     libwavpack
1529     libwebp
1530     libx264
1531     libx265
1532     libxavs
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     libxvid
1538     libzimg
1539     libzmq
1540     libzvbi
1541     lzma
1542     mediacodec
1543     netcdf
1544     openal
1545     opencl
1546     opengl
1547     openssl
1548     schannel
1549     sdl
1550     sdl2
1551     securetransport
1552     videotoolbox
1553     x11grab
1554     xlib
1555     zlib
1556 "
1557
1558 HWACCEL_LIBRARY_LIST="
1559     audiotoolbox
1560     cuda
1561     cuvid
1562     d3d11va
1563     dxva2
1564     libmfx
1565     libnpp
1566     mmal
1567     nvenc
1568     omx
1569     vaapi
1570     vda
1571     vdpau
1572     videotoolbox_hwaccel
1573     xvmc
1574 "
1575
1576 DOCUMENT_LIST="
1577     doc
1578     htmlpages
1579     manpages
1580     podpages
1581     txtpages
1582 "
1583
1584 FEATURE_LIST="
1585     ftrapv
1586     gray
1587     hardcoded_tables
1588     omx_rpi
1589     runtime_cpudetect
1590     safe_bitstream_reader
1591     shared
1592     small
1593     static
1594     swscale_alpha
1595 "
1596
1597 LIBRARY_LIST="
1598     avcodec
1599     avdevice
1600     avfilter
1601     avformat
1602     avresample
1603     avutil
1604     postproc
1605     swresample
1606     swscale
1607 "
1608
1609 LICENSE_LIST="
1610     gpl
1611     nonfree
1612     version3
1613 "
1614
1615 PROGRAM_LIST="
1616     ffplay
1617     ffprobe
1618     ffserver
1619     ffmpeg
1620 "
1621
1622 SUBSYSTEM_LIST="
1623     dct
1624     dwt
1625     error_resilience
1626     faan
1627     fast_unaligned
1628     fft
1629     lsp
1630     lzo
1631     mdct
1632     pixelutils
1633     network
1634     rdft
1635 "
1636
1637 CONFIG_LIST="
1638     $COMPONENT_LIST
1639     $DOCUMENT_LIST
1640     $EXAMPLE_LIST
1641     $EXTERNAL_LIBRARY_LIST
1642     $HWACCEL_LIBRARY_LIST
1643     $FEATURE_LIST
1644     $LICENSE_LIST
1645     $LIBRARY_LIST
1646     $PROGRAM_LIST
1647     $SUBSYSTEM_LIST
1648     fontconfig
1649     incompatible_libav_abi
1650     memalign_hack
1651     memory_poisoning
1652     neon_clobber_test
1653     pic
1654     pod2man
1655     raise_major
1656     thumb
1657     valgrind_backtrace
1658     xmm_clobber_test
1659 "
1660
1661 THREADS_LIST="
1662     pthreads
1663     os2threads
1664     w32threads
1665 "
1666
1667 ATOMICS_LIST="
1668     atomics_gcc
1669     atomics_suncc
1670     atomics_win32
1671 "
1672
1673 ARCH_LIST="
1674     aarch64
1675     alpha
1676     arm
1677     avr32
1678     avr32_ap
1679     avr32_uc
1680     bfin
1681     ia64
1682     m68k
1683     mips
1684     mips64
1685     parisc
1686     ppc
1687     ppc64
1688     s390
1689     sh4
1690     sparc
1691     sparc64
1692     tilegx
1693     tilepro
1694     tomi
1695     x86
1696     x86_32
1697     x86_64
1698 "
1699
1700 ARCH_EXT_LIST_ARM="
1701     armv5te
1702     armv6
1703     armv6t2
1704     armv8
1705     neon
1706     vfp
1707     vfpv3
1708     setend
1709 "
1710
1711 ARCH_EXT_LIST_MIPS="
1712     mipsfpu
1713     mips32r2
1714     mips32r5
1715     mips64r2
1716     mips32r6
1717     mips64r6
1718     mipsdsp
1719     mipsdspr2
1720     msa
1721 "
1722
1723 ARCH_EXT_LIST_LOONGSON="
1724     loongson2
1725     loongson3
1726     mmi
1727 "
1728
1729 ARCH_EXT_LIST_X86_SIMD="
1730     aesni
1731     amd3dnow
1732     amd3dnowext
1733     avx
1734     avx2
1735     fma3
1736     fma4
1737     mmx
1738     mmxext
1739     sse
1740     sse2
1741     sse3
1742     sse4
1743     sse42
1744     ssse3
1745     xop
1746 "
1747
1748 ARCH_EXT_LIST_PPC="
1749     altivec
1750     dcbzl
1751     ldbrx
1752     power8
1753     ppc4xx
1754     vsx
1755 "
1756
1757 ARCH_EXT_LIST_X86="
1758     $ARCH_EXT_LIST_X86_SIMD
1759     cpunop
1760     i686
1761 "
1762
1763 ARCH_EXT_LIST="
1764     $ARCH_EXT_LIST_ARM
1765     $ARCH_EXT_LIST_PPC
1766     $ARCH_EXT_LIST_X86
1767     $ARCH_EXT_LIST_MIPS
1768     $ARCH_EXT_LIST_LOONGSON
1769 "
1770
1771 ARCH_FEATURES="
1772     aligned_stack
1773     fast_64bit
1774     fast_clz
1775     fast_cmov
1776     local_aligned_8
1777     local_aligned_16
1778     local_aligned_32
1779     simd_align_16
1780 "
1781
1782 BUILTIN_LIST="
1783     atomic_cas_ptr
1784     atomic_compare_exchange
1785     machine_rw_barrier
1786     MemoryBarrier
1787     mm_empty
1788     rdtsc
1789     sarestart
1790     sem_timedwait
1791     sync_val_compare_and_swap
1792 "
1793 HAVE_LIST_CMDLINE="
1794     inline_asm
1795     symver
1796     yasm
1797 "
1798
1799 HAVE_LIST_PUB="
1800     bigendian
1801     fast_unaligned
1802     incompatible_libav_abi
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     LoadLibrary
1925     localtime_r
1926     lstat
1927     lzo1x_999_compress
1928     mach_absolute_time
1929     MapViewOfFile
1930     memalign
1931     mkstemp
1932     mmap
1933     mprotect
1934     nanosleep
1935     PeekNamedPipe
1936     posix_memalign
1937     pthread_cancel
1938     sched_getaffinity
1939     SetConsoleTextAttribute
1940     SetConsoleCtrlHandler
1941     setmode
1942     setrlimit
1943     Sleep
1944     strerror_r
1945     sysconf
1946     sysctl
1947     usleep
1948     UTGetOSTypeFromString
1949     VirtualAlloc
1950     wglGetProcAddress
1951 "
1952
1953 TOOLCHAIN_FEATURES="
1954     as_dn_directive
1955     as_func
1956     as_object_arch
1957     asm_mod_q
1958     attribute_may_alias
1959     attribute_packed
1960     ebp_available
1961     ebx_available
1962     gnu_as
1963     gnu_windres
1964     ibm_asm
1965     inline_asm_direct_symbol_refs
1966     inline_asm_labels
1967     inline_asm_nonlocal_labels
1968     pragma_deprecated
1969     rsync_contimeout
1970     symver_asm_label
1971     symver_gnu_asm
1972     vfp_args
1973     xform_asm
1974     xmm_clobbers
1975 "
1976
1977 TYPES_LIST="
1978     CONDITION_VARIABLE_Ptr
1979     socklen_t
1980     struct_addrinfo
1981     struct_group_source_req
1982     struct_ip_mreq_source
1983     struct_ipv6_mreq
1984     struct_msghdr_msg_flags
1985     struct_pollfd
1986     struct_rusage_ru_maxrss
1987     struct_sctp_event_subscribe
1988     struct_sockaddr_in6
1989     struct_sockaddr_sa_len
1990     struct_sockaddr_storage
1991     struct_stat_st_mtim_tv_nsec
1992     struct_v4l2_frmivalenum_discrete
1993 "
1994
1995 HAVE_LIST="
1996     $ARCH_EXT_LIST
1997     $(add_suffix _external $ARCH_EXT_LIST)
1998     $(add_suffix _inline   $ARCH_EXT_LIST)
1999     $ARCH_FEATURES
2000     $ATOMICS_LIST
2001     $BUILTIN_LIST
2002     $COMPLEX_FUNCS
2003     $HAVE_LIST_CMDLINE
2004     $HAVE_LIST_PUB
2005     $HEADERS_LIST
2006     $INTRINSICS_LIST
2007     $MATH_FUNCS
2008     $SYSTEM_FUNCS
2009     $THREADS_LIST
2010     $TOOLCHAIN_FEATURES
2011     $TYPES_LIST
2012     atomics_native
2013     dos_paths
2014     dxva2_lib
2015     dxva2api_cobj
2016     libc_msvcrt
2017     libdc1394_1
2018     libdc1394_2
2019     makeinfo
2020     makeinfo_html
2021     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2022     perl
2023     pod2man
2024     sdl2
2025     section_data_rel_ro
2026     texi2html
2027     threads
2028     vaapi_drm
2029     vaapi_x11
2030     vdpau_x11
2031     winrt
2032     xlib
2033 "
2034
2035 # options emitted with CONFIG_ prefix but not available on the command line
2036 CONFIG_EXTRA="
2037     aandcttables
2038     ac3dsp
2039     audio_frame_queue
2040     audiodsp
2041     blockdsp
2042     bswapdsp
2043     cabac
2044     dirac_parse
2045     dvprofile
2046     exif
2047     faandct
2048     faanidct
2049     fdctdsp
2050     flacdsp
2051     fmtconvert
2052     frame_thread_encoder
2053     g722dsp
2054     golomb
2055     gplv3
2056     h263dsp
2057     h264chroma
2058     h264dsp
2059     h264pred
2060     h264qpel
2061     hpeldsp
2062     huffman
2063     huffyuvdsp
2064     huffyuvencdsp
2065     idctdsp
2066     iirfilter
2067     imdct15
2068     intrax8
2069     iso_media
2070     ividsp
2071     jpegtables
2072     lgplv3
2073     libx262
2074     llauddsp
2075     llviddsp
2076     lpc
2077     lzf
2078     me_cmp
2079     mpeg_er
2080     mpegaudio
2081     mpegaudiodsp
2082     mpegvideo
2083     mpegvideoenc
2084     mss34dsp
2085     pixblockdsp
2086     qpeldsp
2087     qsv
2088     qsvdec
2089     qsvenc
2090     rangecoder
2091     riffdec
2092     riffenc
2093     rtpdec
2094     rtpenc_chain
2095     rv34dsp
2096     sinewin
2097     snappy
2098     srtp
2099     startcode
2100     texturedsp
2101     texturedspenc
2102     tpeldsp
2103     vaapi_encode
2104     vc1dsp
2105     videodsp
2106     vp3dsp
2107     vp56dsp
2108     vp8dsp
2109     vt_bt2020
2110     wma_freqs
2111     wmv2dsp
2112 "
2113
2114 CMDLINE_SELECT="
2115     $ARCH_EXT_LIST
2116     $CONFIG_LIST
2117     $HAVE_LIST_CMDLINE
2118     $THREADS_LIST
2119     asm
2120     cross_compile
2121     debug
2122     extra_warnings
2123     logging
2124     lto
2125     optimizations
2126     rpath
2127     stripping
2128 "
2129
2130 PATHS_LIST="
2131     bindir
2132     datadir
2133     docdir
2134     incdir
2135     libdir
2136     mandir
2137     pkgconfigdir
2138     prefix
2139     shlibdir
2140     install_name_dir
2141 "
2142
2143 CMDLINE_SET="
2144     $PATHS_LIST
2145     ar
2146     arch
2147     as
2148     assert_level
2149     build_suffix
2150     cc
2151     objcc
2152     cpu
2153     cross_prefix
2154     custom_allocator
2155     cxx
2156     dep_cc
2157     doxygen
2158     env
2159     extra_version
2160     gas
2161     host_cc
2162     host_cflags
2163     host_ld
2164     host_ldflags
2165     host_libs
2166     host_os
2167     install
2168     ld
2169     ln_s
2170     logfile
2171     malloc_prefix
2172     nm
2173     optflags
2174     pkg_config
2175     pkg_config_flags
2176     progs_suffix
2177     random_seed
2178     ranlib
2179     samples
2180     strip
2181     sws_max_filter_size
2182     sysinclude
2183     sysroot
2184     target_exec
2185     target_os
2186     target_path
2187     target_samples
2188     tempprefix
2189     toolchain
2190     valgrind
2191     yasmexe
2192 "
2193
2194 CMDLINE_APPEND="
2195     extra_cflags
2196     extra_cxxflags
2197     extra_objcflags
2198     host_cppflags
2199 "
2200
2201 # code dependency declarations
2202
2203 # architecture extensions
2204
2205 armv5te_deps="arm"
2206 armv6_deps="arm"
2207 armv6t2_deps="arm"
2208 armv8_deps="aarch64"
2209 neon_deps_any="aarch64 arm"
2210 intrinsics_neon_deps="neon"
2211 vfp_deps_any="aarch64 arm"
2212 vfpv3_deps="vfp"
2213 setend_deps="arm"
2214
2215 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2216
2217 loongson2_deps="mips"
2218 loongson3_deps="mips"
2219 mipsfpu_deps="mips"
2220 mipsdsp_deps="mips"
2221 mipsdspr2_deps="mips"
2222 mips32r2_deps="mips"
2223 mips32r5_deps="mips"
2224 mips32r6_deps="mips"
2225 mips64r2_deps="mips"
2226 mips64r6_deps="mips"
2227 msa_deps="mipsfpu"
2228 mmi_deps="mips"
2229
2230 altivec_deps="ppc"
2231 dcbzl_deps="ppc"
2232 ldbrx_deps="ppc"
2233 ppc4xx_deps="ppc"
2234 vsx_deps="altivec"
2235 power8_deps="vsx"
2236
2237 cpunop_deps="i686"
2238 x86_64_select="i686"
2239 x86_64_suggest="fast_cmov"
2240
2241 amd3dnow_deps="mmx"
2242 amd3dnowext_deps="amd3dnow"
2243 i686_deps="x86"
2244 mmx_deps="x86"
2245 mmxext_deps="mmx"
2246 sse_deps="mmxext"
2247 sse2_deps="sse"
2248 sse3_deps="sse2"
2249 ssse3_deps="sse3"
2250 sse4_deps="ssse3"
2251 sse42_deps="sse4"
2252 aesni_deps="sse42"
2253 avx_deps="sse42"
2254 xop_deps="avx"
2255 fma3_deps="avx"
2256 fma4_deps="avx"
2257 avx2_deps="avx"
2258
2259 mmx_external_deps="yasm"
2260 mmx_inline_deps="inline_asm"
2261 mmx_suggest="mmx_external mmx_inline"
2262
2263 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2264     eval dep=\$${ext}_deps
2265     eval ${ext}_external_deps='"${dep}_external"'
2266     eval ${ext}_inline_deps='"${dep}_inline"'
2267     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2268 done
2269
2270 aligned_stack_if_any="aarch64 ppc x86"
2271 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2272 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2273 fast_unaligned_if_any="aarch64 ppc x86"
2274 simd_align_16_if_any="altivec neon sse"
2275
2276 # system capabilities
2277 symver_if_any="symver_asm_label symver_gnu_asm"
2278 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2279
2280 # threading support
2281 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2282 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2283 atomics_win32_if="MemoryBarrier"
2284 atomics_native_if_any="$ATOMICS_LIST"
2285 w32threads_deps="atomics_native"
2286 threads_if_any="$THREADS_LIST"
2287
2288 # subsystems
2289 dct_select="rdft"
2290 dirac_parse_select="golomb"
2291 error_resilience_select="me_cmp"
2292 faandct_deps="faan fdctdsp"
2293 faanidct_deps="faan idctdsp"
2294 h264dsp_select="startcode"
2295 frame_thread_encoder_deps="encoders threads"
2296 intrax8_select="blockdsp idctdsp"
2297 mdct_select="fft"
2298 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2299 mpeg_er_select="error_resilience"
2300 mpegaudio_select="mpegaudiodsp"
2301 mpegaudiodsp_select="dct"
2302 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2303 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2304 vc1dsp_select="h264chroma qpeldsp startcode"
2305 rdft_select="fft"
2306
2307 # decoders / encoders
2308 aac_decoder_select="imdct15 mdct sinewin"
2309 aac_fixed_decoder_select="mdct sinewin"
2310 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2311 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2312 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2313 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2314 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 adpcm_g722_decoder_select="g722dsp"
2317 adpcm_g722_encoder_select="g722dsp"
2318 aic_decoder_select="golomb idctdsp"
2319 alac_encoder_select="lpc"
2320 als_decoder_select="bswapdsp"
2321 amrnb_decoder_select="lsp"
2322 amrwb_decoder_select="lsp"
2323 amv_decoder_select="sp5x_decoder exif"
2324 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2325 ape_decoder_select="bswapdsp llauddsp"
2326 apng_decoder_select="zlib"
2327 apng_encoder_select="huffyuvencdsp zlib"
2328 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2329 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2330 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2331 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2332 atrac1_decoder_select="mdct sinewin"
2333 atrac3_decoder_select="mdct"
2334 atrac3p_decoder_select="mdct sinewin"
2335 avrn_decoder_select="exif jpegtables"
2336 bink_decoder_select="blockdsp hpeldsp"
2337 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2338 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2339 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2340 cllc_decoder_select="bswapdsp"
2341 comfortnoise_encoder_select="lpc"
2342 cook_decoder_select="audiodsp mdct sinewin"
2343 cscd_decoder_select="lzo"
2344 cscd_decoder_suggest="zlib"
2345 dca_decoder_select="mdct"
2346 dds_decoder_select="texturedsp"
2347 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2348 dnxhd_decoder_select="blockdsp idctdsp"
2349 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2350 dvvideo_decoder_select="dvprofile idctdsp"
2351 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2352 dxa_decoder_select="zlib"
2353 dxv_decoder_select="lzf texturedsp"
2354 eac3_decoder_select="ac3_decoder"
2355 eac3_encoder_select="ac3_encoder"
2356 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2357 eatgq_decoder_select="aandcttables"
2358 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2359 exr_decoder_select="zlib"
2360 ffv1_decoder_select="golomb rangecoder"
2361 ffv1_encoder_select="rangecoder"
2362 ffvhuff_decoder_select="huffyuv_decoder"
2363 ffvhuff_encoder_select="huffyuv_encoder"
2364 fic_decoder_select="golomb"
2365 flac_decoder_select="flacdsp golomb"
2366 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2367 flashsv2_decoder_select="zlib"
2368 flashsv2_encoder_select="zlib"
2369 flashsv_decoder_select="zlib"
2370 flashsv_encoder_select="zlib"
2371 flv_decoder_select="h263_decoder"
2372 flv_encoder_select="h263_encoder"
2373 fourxm_decoder_select="blockdsp bswapdsp"
2374 fraps_decoder_select="bswapdsp huffman"
2375 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2376 g729_decoder_select="audiodsp"
2377 h261_decoder_select="mpegvideo"
2378 h261_encoder_select="aandcttables mpegvideoenc"
2379 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2380 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2381 h263i_decoder_select="h263_decoder"
2382 h263p_decoder_select="h263_decoder"
2383 h263p_encoder_select="h263_encoder"
2384 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2385 h264_decoder_suggest="error_resilience"
2386 hap_decoder_select="snappy texturedsp"
2387 hap_encoder_deps="libsnappy"
2388 hap_encoder_select="texturedspenc"
2389 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2390 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2391 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2392 iac_decoder_select="imc_decoder"
2393 imc_decoder_select="bswapdsp fft mdct sinewin"
2394 indeo3_decoder_select="hpeldsp"
2395 indeo4_decoder_select="ividsp"
2396 indeo5_decoder_select="ividsp"
2397 interplay_video_decoder_select="hpeldsp"
2398 jpegls_decoder_select="golomb mjpeg_decoder"
2399 jpegls_encoder_select="golomb"
2400 jv_decoder_select="blockdsp"
2401 lagarith_decoder_select="huffyuvdsp"
2402 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2403 loco_decoder_select="golomb"
2404 magicyuv_decoder_select="huffyuvdsp"
2405 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2406 metasound_decoder_select="lsp mdct sinewin"
2407 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2408 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2409 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 mjpegb_decoder_select="mjpeg_decoder"
2411 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2412 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2413 mlp_decoder_select="mlp_parser"
2414 motionpixels_decoder_select="bswapdsp"
2415 mp1_decoder_select="mpegaudio"
2416 mp1float_decoder_select="mpegaudio"
2417 mp2_decoder_select="mpegaudio"
2418 mp2float_decoder_select="mpegaudio"
2419 mp3_decoder_select="mpegaudio"
2420 mp3adu_decoder_select="mpegaudio"
2421 mp3adufloat_decoder_select="mpegaudio"
2422 mp3float_decoder_select="mpegaudio"
2423 mp3on4_decoder_select="mpegaudio"
2424 mp3on4float_decoder_select="mpegaudio"
2425 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2426 mpc8_decoder_select="mpegaudiodsp"
2427 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2428 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2429 mpegvideo_decoder_select="mpegvideo"
2430 mpeg1video_decoder_select="mpegvideo"
2431 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2432 mpeg2video_decoder_select="mpegvideo"
2433 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2434 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2435 mpeg4_encoder_select="h263_encoder"
2436 msa1_decoder_select="mss34dsp"
2437 msmpeg4v1_decoder_select="h263_decoder"
2438 msmpeg4v2_decoder_select="h263_decoder"
2439 msmpeg4v2_encoder_select="h263_encoder"
2440 msmpeg4v3_decoder_select="h263_decoder"
2441 msmpeg4v3_encoder_select="h263_encoder"
2442 mss2_decoder_select="vc1_decoder mpegvideo"
2443 mts2_decoder_select="mss34dsp"
2444 mxpeg_decoder_select="mjpeg_decoder"
2445 nellymoser_decoder_select="mdct sinewin"
2446 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2447 nuv_decoder_select="idctdsp lzo"
2448 on2avc_decoder_select="mdct"
2449 opus_decoder_deps="swresample"
2450 opus_decoder_select="imdct15"
2451 png_decoder_select="zlib"
2452 png_encoder_select="huffyuvencdsp zlib"
2453 prores_decoder_select="blockdsp idctdsp"
2454 prores_encoder_select="fdctdsp"
2455 qcelp_decoder_select="lsp"
2456 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2457 ra_144_decoder_select="audiodsp"
2458 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2459 ralf_decoder_select="golomb"
2460 rawvideo_decoder_select="bswapdsp"
2461 rscc_decoder_select="zlib"
2462 rtjpeg_decoder_select="me_cmp"
2463 rv10_decoder_select="h263_decoder"
2464 rv10_encoder_select="h263_encoder"
2465 rv20_decoder_select="h263_decoder"
2466 rv20_encoder_select="h263_encoder"
2467 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 screenpresso_decoder_select="zlib"
2470 shorten_decoder_select="golomb"
2471 sipr_decoder_select="lsp"
2472 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2473 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2474 sonic_decoder_select="golomb rangecoder"
2475 sonic_encoder_select="golomb rangecoder"
2476 sonic_ls_encoder_select="golomb rangecoder"
2477 sp5x_decoder_select="mjpeg_decoder"
2478 svq1_decoder_select="hpeldsp"
2479 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2480 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2481 svq3_decoder_suggest="zlib"
2482 tak_decoder_select="audiodsp"
2483 tdsc_decoder_select="zlib mjpeg_decoder"
2484 theora_decoder_select="vp3_decoder"
2485 thp_decoder_select="mjpeg_decoder"
2486 tiff_decoder_suggest="zlib lzma"
2487 tiff_encoder_suggest="zlib"
2488 truehd_decoder_select="mlp_parser"
2489 truemotion2_decoder_select="bswapdsp"
2490 truespeech_decoder_select="bswapdsp"
2491 tscc_decoder_select="zlib"
2492 twinvq_decoder_select="mdct lsp sinewin"
2493 txd_decoder_select="texturedsp"
2494 utvideo_decoder_select="bswapdsp"
2495 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2496 vble_decoder_select="huffyuvdsp"
2497 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2498 vc1_qsv_decoder_deps="libmfx"
2499 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2500 vc1image_decoder_select="vc1_decoder"
2501 vorbis_decoder_select="mdct"
2502 vorbis_encoder_select="mdct"
2503 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2504 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2505 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2506 vp6a_decoder_select="vp6_decoder"
2507 vp6f_decoder_select="vp6_decoder"
2508 vp7_decoder_select="h264pred videodsp vp8dsp"
2509 vp8_decoder_select="h264pred videodsp vp8dsp"
2510 vp9_decoder_select="videodsp vp9_parser"
2511 webp_decoder_select="vp8_decoder exif"
2512 wmalossless_decoder_select="llauddsp"
2513 wmapro_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_encoder_select="mdct sinewin wma_freqs"
2516 wmav2_decoder_select="mdct sinewin wma_freqs"
2517 wmav2_encoder_select="mdct sinewin wma_freqs"
2518 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2519 wmv1_decoder_select="h263_decoder"
2520 wmv1_encoder_select="h263_encoder"
2521 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2522 wmv2_encoder_select="h263_encoder wmv2dsp"
2523 wmv3_decoder_select="vc1_decoder"
2524 wmv3image_decoder_select="wmv3_decoder"
2525 xma1_decoder_select="wmapro_decoder"
2526 xma2_decoder_select="wmapro_decoder"
2527 zerocodec_decoder_select="zlib"
2528 zlib_decoder_select="zlib"
2529 zlib_encoder_select="zlib"
2530 zmbv_decoder_select="zlib"
2531 zmbv_encoder_select="zlib"
2532
2533 # platform codecs
2534 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2535 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2536
2537 # hardware accelerators
2538 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2539 cuvid_deps="cuda"
2540 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2541 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2542 vaapi_deps="va_va_h"
2543 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2544 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2545 vda_deps="vda_framework pthreads"
2546 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2547 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2548 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2549 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2550 xvmc_deps="X11_extensions_XvMClib_h"
2551
2552 h263_cuvid_hwaccel_deps="cuda cuvid"
2553 h263_vaapi_hwaccel_deps="vaapi"
2554 h263_vaapi_hwaccel_select="h263_decoder"
2555 h263_videotoolbox_hwaccel_deps="videotoolbox"
2556 h263_videotoolbox_hwaccel_select="h263_decoder"
2557 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2558 h264_cuvid_hwaccel_deps="cuda cuvid"
2559 h264_d3d11va_hwaccel_deps="d3d11va"
2560 h264_d3d11va_hwaccel_select="h264_decoder"
2561 h264_dxva2_hwaccel_deps="dxva2"
2562 h264_dxva2_hwaccel_select="h264_decoder"
2563 h264_mediacodec_decoder_deps="mediacodec"
2564 h264_mediacodec_hwaccel_deps="mediacodec"
2565 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2566 h264_mmal_decoder_deps="mmal"
2567 h264_mmal_decoder_select="mmal"
2568 h264_mmal_hwaccel_deps="mmal"
2569 h264_omx_encoder_deps="omx"
2570 h264_qsv_hwaccel_deps="libmfx"
2571 h264_vaapi_hwaccel_deps="vaapi"
2572 h264_vaapi_hwaccel_select="h264_decoder"
2573 h264_vda_decoder_deps="vda"
2574 h264_vda_decoder_select="h264_decoder"
2575 h264_vda_hwaccel_deps="vda"
2576 h264_vda_hwaccel_select="h264_decoder"
2577 h264_vda_old_hwaccel_deps="vda"
2578 h264_vda_old_hwaccel_select="h264_decoder"
2579 h264_vdpau_decoder_deps="vdpau"
2580 h264_vdpau_decoder_select="h264_decoder"
2581 h264_vdpau_hwaccel_deps="vdpau"
2582 h264_vdpau_hwaccel_select="h264_decoder"
2583 h264_videotoolbox_hwaccel_deps="videotoolbox"
2584 h264_videotoolbox_hwaccel_select="h264_decoder"
2585 hevc_cuvid_hwaccel_deps="cuda cuvid"
2586 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2587 hevc_d3d11va_hwaccel_select="hevc_decoder"
2588 hevc_mediacodec_decoder_deps="mediacodec"
2589 hevc_mediacodec_hwaccel_deps="mediacodec"
2590 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2591 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2592 hevc_dxva2_hwaccel_select="hevc_decoder"
2593 hevc_qsv_hwaccel_deps="libmfx"
2594 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2595 hevc_vaapi_hwaccel_select="hevc_decoder"
2596 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2597 hevc_vdpau_hwaccel_select="hevc_decoder"
2598 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2599 mpeg_vdpau_decoder_deps="vdpau"
2600 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2601 mpeg_xvmc_hwaccel_deps="xvmc"
2602 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2603 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2604 mpeg1_vdpau_decoder_deps="vdpau"
2605 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2606 mpeg1_vdpau_hwaccel_deps="vdpau"
2607 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2608 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2609 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_xvmc_hwaccel_deps="xvmc"
2611 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2612 mpeg2_crystalhd_decoder_select="crystalhd"
2613 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2614 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2615 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_dxva2_hwaccel_deps="dxva2"
2617 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_mmal_decoder_deps="mmal"
2619 mpeg2_mmal_decoder_select="mmal"
2620 mpeg2_mmal_hwaccel_deps="mmal"
2621 mpeg2_qsv_hwaccel_deps="libmfx"
2622 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2623 mpeg2_vaapi_hwaccel_deps="vaapi"
2624 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2625 mpeg2_vdpau_hwaccel_deps="vdpau"
2626 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2628 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_xvmc_hwaccel_deps="xvmc"
2630 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2631 mpeg4_crystalhd_decoder_select="crystalhd"
2632 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2633 mpeg4_mmal_decoder_deps="mmal"
2634 mpeg4_mmal_decoder_select="mmal"
2635 mpeg4_mmal_hwaccel_deps="mmal"
2636 mpeg4_omx_encoder_deps="omx"
2637 mpeg4_vaapi_hwaccel_deps="vaapi"
2638 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2639 mpeg4_vdpau_decoder_deps="vdpau"
2640 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2641 mpeg4_vdpau_hwaccel_deps="vdpau"
2642 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2643 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2644 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2645 msmpeg4_crystalhd_decoder_select="crystalhd"
2646 vc1_crystalhd_decoder_select="crystalhd"
2647 vc1_cuvid_hwaccel_deps="cuda cuvid"
2648 vc1_d3d11va_hwaccel_deps="d3d11va"
2649 vc1_d3d11va_hwaccel_select="vc1_decoder"
2650 vc1_dxva2_hwaccel_deps="dxva2"
2651 vc1_dxva2_hwaccel_select="vc1_decoder"
2652 vc1_mmal_decoder_deps="mmal"
2653 vc1_mmal_decoder_select="mmal"
2654 vc1_mmal_hwaccel_deps="mmal"
2655 vc1_qsv_hwaccel_deps="libmfx"
2656 vc1_qsv_hwaccel_select="qsvdec_vc1"
2657 vc1_vaapi_hwaccel_deps="vaapi"
2658 vc1_vaapi_hwaccel_select="vc1_decoder"
2659 vc1_vdpau_decoder_deps="vdpau"
2660 vc1_vdpau_decoder_select="vc1_decoder"
2661 vc1_vdpau_hwaccel_deps="vdpau"
2662 vc1_vdpau_hwaccel_select="vc1_decoder"
2663 vp8_cuvid_hwaccel_deps="cuda cuvid"
2664 vp9_cuvid_hwaccel_deps="cuda cuvid"
2665 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2666 vp9_d3d11va_hwaccel_select="vp9_decoder"
2667 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2668 vp9_dxva2_hwaccel_select="vp9_decoder"
2669 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2670 vp9_vaapi_hwaccel_select="vp9_decoder"
2671 wmv3_crystalhd_decoder_select="crystalhd"
2672 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2673 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2674 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2675 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2676 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2677
2678 # hardware-accelerated codecs
2679 omx_deps="dlopen pthreads"
2680 omx_extralibs='$ldl'
2681 qsvdec_select="qsv"
2682 qsvenc_select="qsv"
2683 vaapi_encode_deps="vaapi"
2684
2685 hwupload_cuda_filter_deps="cuda"
2686 scale_npp_filter_deps="cuda libnpp"
2687
2688 nvenc_deps_any="dlopen LoadLibrary"
2689 nvenc_encoder_deps="nvenc"
2690 h263_cuvid_decoder_deps="cuda cuvid"
2691 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2692 h264_cuvid_decoder_deps="cuda cuvid"
2693 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2694 h264_nvenc_encoder_deps="nvenc"
2695 h264_qsv_decoder_deps="libmfx"
2696 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2697 h264_qsv_encoder_deps="libmfx"
2698 h264_qsv_encoder_select="qsvenc"
2699 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2700 h264_vaapi_encoder_select="vaapi_encode golomb"
2701
2702 hevc_cuvid_decoder_deps="cuda cuvid"
2703 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2704 hevc_nvenc_encoder_deps="nvenc"
2705 hevc_qsv_decoder_deps="libmfx"
2706 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2707 hevc_qsv_encoder_deps="libmfx"
2708 hevc_qsv_encoder_select="qsvenc"
2709 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2710 hevc_vaapi_encoder_select="vaapi_encode golomb"
2711 mjpeg_cuvid_decoder_deps="cuda cuvid"
2712 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2713 mpeg1_cuvid_decoder_deps="cuda cuvid"
2714 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2715 mpeg2_cuvid_decoder_deps="cuda cuvid"
2716 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2717 mpeg2_qsv_decoder_deps="libmfx"
2718 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2719 mpeg2_qsv_encoder_deps="libmfx"
2720 mpeg2_qsv_encoder_select="qsvenc"
2721 mpeg4_cuvid_decoder_deps="cuda cuvid"
2722 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2723 nvenc_h264_encoder_deps="nvenc"
2724 nvenc_hevc_encoder_deps="nvenc"
2725
2726 vc1_cuvid_decoder_deps="cuda cuvid"
2727 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2728 vp8_cuvid_decoder_deps="cuda cuvid"
2729 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2730 vp9_cuvid_decoder_deps="cuda cuvid"
2731 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2732
2733 # parsers
2734 h264_parser_select="golomb h264dsp"
2735 hevc_parser_select="golomb"
2736 mpegvideo_parser_select="mpegvideo"
2737 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2738 vc1_parser_select="vc1dsp"
2739
2740 # bitstream_filters
2741 mjpeg2jpeg_bsf_select="jpegtables"
2742
2743 # external libraries
2744 aac_at_decoder_deps="audiotoolbox"
2745 ac3_at_decoder_deps="audiotoolbox"
2746 ac3_at_decoder_select="ac3_parser"
2747 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2748 alac_at_decoder_deps="audiotoolbox"
2749 amr_nb_at_decoder_deps="audiotoolbox"
2750 eac3_at_decoder_deps="audiotoolbox"
2751 eac3_at_decoder_select="ac3_parser"
2752 gsm_ms_at_decoder_deps="audiotoolbox"
2753 ilbc_at_decoder_deps="audiotoolbox"
2754 mp1_at_decoder_deps="audiotoolbox"
2755 mp2_at_decoder_deps="audiotoolbox"
2756 mp3_at_decoder_deps="audiotoolbox"
2757 pcm_alaw_at_decoder_deps="audiotoolbox"
2758 pcm_mulaw_at_decoder_deps="audiotoolbox"
2759 qdmc_at_decoder_deps="audiotoolbox"
2760 qdm2_at_decoder_deps="audiotoolbox"
2761 aac_at_encoder_deps="audiotoolbox"
2762 aac_at_encoder_select="audio_frame_queue"
2763 alac_at_encoder_deps="audiotoolbox"
2764 alac_at_encoder_select="audio_frame_queue"
2765 ilbc_at_encoder_deps="audiotoolbox"
2766 ilbc_at_encoder_select="audio_frame_queue"
2767 pcm_alaw_at_encoder_deps="audiotoolbox"
2768 pcm_alaw_at_encoder_select="audio_frame_queue"
2769 pcm_mulaw_at_encoder_deps="audiotoolbox"
2770 pcm_mulaw_at_encoder_select="audio_frame_queue"
2771 chromaprint_muxer_deps="chromaprint"
2772 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2773 libcelt_decoder_deps="libcelt"
2774 libfdk_aac_decoder_deps="libfdk_aac"
2775 libfdk_aac_encoder_deps="libfdk_aac"
2776 libfdk_aac_encoder_select="audio_frame_queue"
2777 libgme_demuxer_deps="libgme"
2778 libgsm_decoder_deps="libgsm"
2779 libgsm_encoder_deps="libgsm"
2780 libgsm_ms_decoder_deps="libgsm"
2781 libgsm_ms_encoder_deps="libgsm"
2782 libilbc_decoder_deps="libilbc"
2783 libilbc_encoder_deps="libilbc"
2784 libkvazaar_encoder_deps="libkvazaar"
2785 libmodplug_demuxer_deps="libmodplug"
2786 libmp3lame_encoder_deps="libmp3lame"
2787 libmp3lame_encoder_select="audio_frame_queue"
2788 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2789 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2790 libopencore_amrnb_encoder_select="audio_frame_queue"
2791 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2792 libopenh264_decoder_deps="libopenh264"
2793 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2794 libopenh264_encoder_deps="libopenh264"
2795 libopenjpeg_decoder_deps="libopenjpeg"
2796 libopenjpeg_encoder_deps="libopenjpeg"
2797 libopenmpt_demuxer_deps="libopenmpt"
2798 libopus_decoder_deps="libopus"
2799 libopus_encoder_deps="libopus"
2800 libopus_encoder_select="audio_frame_queue"
2801 libschroedinger_decoder_deps="libschroedinger"
2802 libschroedinger_encoder_deps="libschroedinger"
2803 libshine_encoder_deps="libshine"
2804 libshine_encoder_select="audio_frame_queue"
2805 libspeex_decoder_deps="libspeex"
2806 libspeex_encoder_deps="libspeex"
2807 libspeex_encoder_select="audio_frame_queue"
2808 libtheora_encoder_deps="libtheora"
2809 libtwolame_encoder_deps="libtwolame"
2810 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2811 libvorbis_decoder_deps="libvorbis"
2812 libvorbis_encoder_deps="libvorbis"
2813 libvorbis_encoder_select="audio_frame_queue"
2814 libvpx_vp8_decoder_deps="libvpx"
2815 libvpx_vp8_encoder_deps="libvpx"
2816 libvpx_vp9_decoder_deps="libvpx"
2817 libvpx_vp9_encoder_deps="libvpx"
2818 libwavpack_encoder_deps="libwavpack"
2819 libwebp_encoder_deps="libwebp"
2820 libwebp_anim_encoder_deps="libwebp"
2821 libx262_encoder_deps="libx262"
2822 libx264_encoder_deps="libx264"
2823 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2824 libx264rgb_encoder_select="libx264_encoder"
2825 libx265_encoder_deps="libx265"
2826 libxavs_encoder_deps="libxavs"
2827 libxvid_encoder_deps="libxvid"
2828 libzvbi_teletext_decoder_deps="libzvbi"
2829 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2830 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2831 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2832 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2833 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2834
2835 # demuxers / muxers
2836 ac3_demuxer_select="ac3_parser"
2837 asf_demuxer_select="riffdec"
2838 asf_o_demuxer_select="riffdec"
2839 asf_muxer_select="riffenc"
2840 asf_stream_muxer_select="asf_muxer"
2841 avi_demuxer_select="iso_media riffdec exif"
2842 avi_muxer_select="riffenc"
2843 avisynth_demuxer_deps="avisynth"
2844 avisynth_demuxer_select="riffdec"
2845 caf_demuxer_select="iso_media riffdec"
2846 dash_muxer_select="mp4_muxer"
2847 dirac_demuxer_select="dirac_parser"
2848 dts_demuxer_select="dca_parser"
2849 dtshd_demuxer_select="dca_parser"
2850 dv_demuxer_select="dvprofile"
2851 dv_muxer_select="dvprofile"
2852 dxa_demuxer_select="riffdec"
2853 eac3_demuxer_select="ac3_parser"
2854 f4v_muxer_select="mov_muxer"
2855 fifo_muxer_deps="threads"
2856 flac_demuxer_select="flac_parser"
2857 hds_muxer_select="flv_muxer"
2858 hls_muxer_select="mpegts_muxer"
2859 image2_alias_pix_demuxer_select="image2_demuxer"
2860 image2_brender_pix_demuxer_select="image2_demuxer"
2861 ipod_muxer_select="mov_muxer"
2862 ismv_muxer_select="mov_muxer"
2863 libnut_demuxer_deps="libnut"
2864 libnut_muxer_deps="libnut"
2865 matroska_audio_muxer_select="matroska_muxer"
2866 matroska_demuxer_select="iso_media riffdec"
2867 matroska_demuxer_suggest="bzlib lzo zlib"
2868 matroska_muxer_select="iso_media riffenc"
2869 mmf_muxer_select="riffenc"
2870 mov_demuxer_select="iso_media riffdec"
2871 mov_demuxer_suggest="zlib"
2872 mov_muxer_select="iso_media riffenc rtpenc_chain"
2873 mp3_demuxer_select="mpegaudio_parser"
2874 mp4_muxer_select="mov_muxer"
2875 mpegts_demuxer_select="iso_media"
2876 mpegts_muxer_select="adts_muxer latm_muxer"
2877 mpegtsraw_demuxer_select="mpegts_demuxer"
2878 mxf_d10_muxer_select="mxf_muxer"
2879 mxf_opatom_muxer_select="mxf_muxer"
2880 nut_muxer_select="riffenc"
2881 nuv_demuxer_select="riffdec"
2882 oga_muxer_select="ogg_muxer"
2883 ogg_demuxer_select="dirac_parse"
2884 ogv_muxer_select="ogg_muxer"
2885 opus_muxer_select="ogg_muxer"
2886 psp_muxer_select="mov_muxer"
2887 rtp_demuxer_select="sdp_demuxer"
2888 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2889 rtsp_demuxer_select="http_protocol rtpdec"
2890 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2891 sap_demuxer_select="sdp_demuxer"
2892 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2893 sdp_demuxer_select="rtpdec"
2894 smoothstreaming_muxer_select="ismv_muxer"
2895 spdif_muxer_select="aac_parser"
2896 spx_muxer_select="ogg_muxer"
2897 swf_demuxer_suggest="zlib"
2898 tak_demuxer_select="tak_parser"
2899 tg2_muxer_select="mov_muxer"
2900 tgp_muxer_select="mov_muxer"
2901 vobsub_demuxer_select="mpegps_demuxer"
2902 w64_demuxer_select="wav_demuxer"
2903 w64_muxer_select="wav_muxer"
2904 wav_demuxer_select="riffdec"
2905 wav_muxer_select="riffenc"
2906 webm_muxer_select="iso_media riffenc"
2907 webm_dash_manifest_demuxer_select="matroska_demuxer"
2908 wtv_demuxer_select="mpegts_demuxer riffdec"
2909 wtv_muxer_select="mpegts_muxer riffenc"
2910 xmv_demuxer_select="riffdec"
2911 xwma_demuxer_select="riffdec"
2912
2913 # indevs / outdevs
2914 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2915 alsa_outdev_deps="alsa_asoundlib_h"
2916 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2917 avfoundation_indev_select="avfoundation"
2918 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2919 caca_outdev_deps="libcaca"
2920 decklink_indev_deps="decklink pthreads"
2921 decklink_indev_extralibs="-lstdc++"
2922 decklink_outdev_deps="decklink pthreads"
2923 decklink_outdev_extralibs="-lstdc++"
2924 dshow_indev_deps="IBaseFilter"
2925 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2926 dv1394_indev_deps="dv1394"
2927 dv1394_indev_select="dv_demuxer"
2928 fbdev_indev_deps="linux_fb_h"
2929 fbdev_outdev_deps="linux_fb_h"
2930 gdigrab_indev_deps="CreateDIBSection"
2931 gdigrab_indev_extralibs="-lgdi32"
2932 gdigrab_indev_select="bmp_decoder"
2933 iec61883_indev_deps="libiec61883"
2934 jack_indev_deps="jack_jack_h"
2935 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2936 lavfi_indev_deps="avfilter"
2937 libcdio_indev_deps="libcdio"
2938 libdc1394_indev_deps="libdc1394"
2939 libv4l2_indev_deps="libv4l2"
2940 openal_indev_deps="openal"
2941 opengl_outdev_deps="opengl"
2942 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2943 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2944 pulse_indev_deps="libpulse"
2945 pulse_outdev_deps="libpulse"
2946 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2947 qtkit_indev_select="qtkit"
2948 sdl2_outdev_deps="sdl2"
2949 sndio_indev_deps="sndio_h"
2950 sndio_outdev_deps="sndio_h"
2951 v4l_indev_deps="linux_videodev_h"
2952 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2953 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2954 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2955 vfwcap_indev_extralibs="-lavicap32"
2956 x11grab_indev_deps="x11grab"
2957 x11grab_xcb_indev_deps="libxcb"
2958 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2959 xv_outdev_extralibs="-lXv -lX11 -lXext"
2960
2961 # protocols
2962 async_protocol_deps="threads"
2963 bluray_protocol_deps="libbluray"
2964 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2965 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2966 ffrtmpcrypt_protocol_select="tcp_protocol"
2967 ffrtmphttp_protocol_deps="!librtmp_protocol"
2968 ffrtmphttp_protocol_select="http_protocol"
2969 ftp_protocol_select="tcp_protocol"
2970 gopher_protocol_select="network"
2971 http_protocol_select="tcp_protocol"
2972 httpproxy_protocol_select="tcp_protocol"
2973 https_protocol_select="tls_protocol"
2974 icecast_protocol_select="http_protocol"
2975 librtmp_protocol_deps="librtmp"
2976 librtmpe_protocol_deps="librtmp"
2977 librtmps_protocol_deps="librtmp"
2978 librtmpt_protocol_deps="librtmp"
2979 librtmpte_protocol_deps="librtmp"
2980 libsmbclient_protocol_deps="libsmbclient gplv3"
2981 libssh_protocol_deps="libssh"
2982 mmsh_protocol_select="http_protocol"
2983 mmst_protocol_select="network"
2984 rtmp_protocol_deps="!librtmp_protocol"
2985 rtmp_protocol_select="tcp_protocol"
2986 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2987 rtmps_protocol_deps="!librtmp_protocol"
2988 rtmps_protocol_select="tls_protocol"
2989 rtmpt_protocol_select="ffrtmphttp_protocol"
2990 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2991 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2992 rtp_protocol_select="udp_protocol"
2993 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2994 sctp_protocol_select="network"
2995 srtp_protocol_select="rtp_protocol srtp"
2996 tcp_protocol_select="network"
2997 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2998 tls_gnutls_protocol_select="tcp_protocol"
2999 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3000 tls_openssl_protocol_select="tcp_protocol"
3001 tls_schannel_protocol_deps="schannel"
3002 tls_schannel_protocol_select="tcp_protocol"
3003 tls_securetransport_protocol_deps="securetransport"
3004 tls_securetransport_protocol_select="tcp_protocol"
3005 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3006 udp_protocol_select="network"
3007 udplite_protocol_select="network"
3008 unix_protocol_deps="sys_un_h"
3009 unix_protocol_select="network"
3010
3011 # filters
3012 afftfilt_filter_deps="avcodec"
3013 afftfilt_filter_select="fft"
3014 amovie_filter_deps="avcodec avformat"
3015 aresample_filter_deps="swresample"
3016 ass_filter_deps="libass"
3017 asyncts_filter_deps="avresample"
3018 atempo_filter_deps="avcodec"
3019 atempo_filter_select="rdft"
3020 azmq_filter_deps="libzmq"
3021 blackframe_filter_deps="gpl"
3022 boxblur_filter_deps="gpl"
3023 bs2b_filter_deps="libbs2b"
3024 colormatrix_filter_deps="gpl"
3025 cover_rect_filter_deps="avcodec avformat gpl"
3026 cropdetect_filter_deps="gpl"
3027 delogo_filter_deps="gpl"
3028 deshake_filter_select="pixelutils"
3029 drawtext_filter_deps="libfreetype"
3030 ebur128_filter_deps="gpl"
3031 eq_filter_deps="gpl"
3032 fftfilt_filter_deps="avcodec"
3033 fftfilt_filter_select="rdft"
3034 find_rect_filter_deps="avcodec avformat gpl"
3035 firequalizer_filter_deps="avcodec"
3036 firequalizer_filter_select="rdft"
3037 flite_filter_deps="libflite"
3038 framerate_filter_select="pixelutils"
3039 frei0r_filter_deps="frei0r dlopen"
3040 frei0r_src_filter_deps="frei0r dlopen"
3041 fspp_filter_deps="gpl"
3042 geq_filter_deps="gpl"
3043 histeq_filter_deps="gpl"
3044 hqdn3d_filter_deps="gpl"
3045 interlace_filter_deps="gpl"
3046 kerndeint_filter_deps="gpl"
3047 ladspa_filter_deps="ladspa dlopen"
3048 loudnorm_filter_deps="libebur128"
3049 mcdeint_filter_deps="avcodec gpl"
3050 movie_filter_deps="avcodec avformat"
3051 mpdecimate_filter_deps="gpl"
3052 mpdecimate_filter_select="pixelutils"
3053 mptestsrc_filter_deps="gpl"
3054 negate_filter_deps="lut_filter"
3055 nnedi_filter_deps="gpl"
3056 ocr_filter_deps="libtesseract"
3057 ocv_filter_deps="libopencv"
3058 owdenoise_filter_deps="gpl"
3059 pan_filter_deps="swresample"
3060 perspective_filter_deps="gpl"
3061 phase_filter_deps="gpl"
3062 pp7_filter_deps="gpl"
3063 pp_filter_deps="gpl postproc"
3064 pullup_filter_deps="gpl"
3065 removelogo_filter_deps="avcodec avformat swscale"
3066 repeatfields_filter_deps="gpl"
3067 resample_filter_deps="avresample"
3068 rubberband_filter_deps="librubberband"
3069 sab_filter_deps="gpl swscale"
3070 scale2ref_filter_deps="swscale"
3071 scale_filter_deps="swscale"
3072 select_filter_select="pixelutils"
3073 showcqt_filter_deps="avcodec avformat swscale"
3074 showcqt_filter_select="fft"
3075 showfreqs_filter_deps="avcodec"
3076 showfreqs_filter_select="fft"
3077 showspectrum_filter_deps="avcodec"
3078 showspectrum_filter_select="fft"
3079 showspectrumpic_filter_deps="avcodec"
3080 showspectrumpic_filter_select="fft"
3081 smartblur_filter_deps="gpl swscale"
3082 sofalizer_filter_deps="netcdf avcodec"
3083 sofalizer_filter_select="fft"
3084 spectrumsynth_filter_deps="avcodec"
3085 spectrumsynth_filter_select="fft"
3086 spp_filter_deps="gpl avcodec"
3087 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3088 stereo3d_filter_deps="gpl"
3089 subtitles_filter_deps="avformat avcodec libass"
3090 super2xsai_filter_deps="gpl"
3091 pixfmts_super2xsai_test_deps="super2xsai_filter"
3092 tinterlace_filter_deps="gpl"
3093 tinterlace_merge_test_deps="tinterlace_filter"
3094 tinterlace_pad_test_deps="tinterlace_filter"
3095 uspp_filter_deps="gpl avcodec"
3096 vaguedenoiser_filter_deps="gpl"
3097 vidstabdetect_filter_deps="libvidstab"
3098 vidstabtransform_filter_deps="libvidstab"
3099 zmq_filter_deps="libzmq"
3100 zoompan_filter_deps="swscale"
3101 zscale_filter_deps="libzimg"
3102 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3103
3104 # examples
3105 avio_dir_cmd_deps="avformat avutil"
3106 avio_reading_deps="avformat avcodec avutil"
3107 decoding_encoding_example_deps="avcodec avformat avutil"
3108 demuxing_decoding_example_deps="avcodec avformat avutil"
3109 extract_mvs_example_deps="avcodec avformat avutil"
3110 filter_audio_example_deps="avfilter avutil"
3111 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3112 filtering_video_example_deps="avfilter avcodec avformat avutil"
3113 http_multiclient_example_deps="avformat avutil"
3114 metadata_example_deps="avformat avutil"
3115 muxing_example_deps="avcodec avformat avutil swscale"
3116 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3117 remuxing_example_deps="avcodec avformat avutil"
3118 resampling_audio_example_deps="avutil swresample"
3119 scaling_video_example_deps="avutil swscale"
3120 transcode_aac_example_deps="avcodec avformat swresample"
3121 transcoding_example_deps="avfilter avcodec avformat avutil"
3122
3123 # libraries, in linking order
3124 avcodec_deps="avutil"
3125 avdevice_deps="avformat avcodec avutil"
3126 avfilter_deps="avutil"
3127 avformat_deps="avcodec avutil"
3128 avresample_deps="avutil"
3129 postproc_deps="avutil gpl"
3130 swresample_deps="avutil"
3131 swscale_deps="avutil"
3132
3133 # programs
3134 ffmpeg_deps="avcodec avfilter avformat swresample"
3135 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3136                null_filter
3137                setpts_filter trim_filter"
3138 ffplay_deps="avcodec avformat swscale swresample sdl2"
3139 ffplay_libs='$sdl2_libs'
3140 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3141 ffprobe_deps="avcodec avformat"
3142 ffserver_deps="avformat fork sarestart"
3143 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3144
3145 # documentation
3146 podpages_deps="perl"
3147 manpages_deps="perl pod2man"
3148 htmlpages_deps="perl"
3149 htmlpages_deps_any="makeinfo_html texi2html"
3150 txtpages_deps="perl makeinfo"
3151 doc_deps_any="manpages htmlpages podpages txtpages"
3152
3153 # default parameters
3154
3155 logfile="config.log"
3156
3157 # installation paths
3158 prefix_default="/usr/local"
3159 bindir_default='${prefix}/bin'
3160 datadir_default='${prefix}/share/ffmpeg'
3161 docdir_default='${prefix}/share/doc/ffmpeg'
3162 incdir_default='${prefix}/include'
3163 libdir_default='${prefix}/lib'
3164 mandir_default='${prefix}/share/man'
3165
3166 # toolchain
3167 ar_default="ar"
3168 cc_default="gcc"
3169 cxx_default="g++"
3170 host_cc_default="gcc"
3171 cp_f="cp -f"
3172 doxygen_default="doxygen"
3173 install="install"
3174 ln_s_default="ln -s -f"
3175 nm_default="nm -g"
3176 objformat="elf"
3177 pkg_config_default=pkg-config
3178 ranlib_default="ranlib"
3179 strip_default="strip"
3180 version_script='--version-script'
3181 yasmexe_default="yasm"
3182 windres_default="windres"
3183
3184 # OS
3185 target_os_default=$(tolower $(uname -s))
3186 host_os=$target_os_default
3187
3188 # machine
3189 if test "$target_os_default" = aix; then
3190     arch_default=$(uname -p)
3191     strip_default="strip -X32_64"
3192 else
3193     arch_default=$(uname -m)
3194 fi
3195 cpu="generic"
3196 intrinsics="none"
3197
3198 # configurable options
3199 enable $PROGRAM_LIST
3200 enable $DOCUMENT_LIST
3201 enable $EXAMPLE_LIST
3202 enable $(filter_out avresample $LIBRARY_LIST)
3203 enable stripping
3204
3205 enable asm
3206 enable debug
3207 enable doc
3208 enable faan faandct faanidct
3209 enable optimizations
3210 enable runtime_cpudetect
3211 enable safe_bitstream_reader
3212 enable static
3213 enable swscale_alpha
3214 enable valgrind_backtrace
3215
3216 sws_max_filter_size_default=256
3217 set_default sws_max_filter_size
3218
3219 # Enable platform codecs by default.
3220 enable audiotoolbox
3221
3222 # Enable hwaccels by default.
3223 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3224 enable xlib
3225
3226 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3227
3228 # build settings
3229 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3230 LIBPREF="lib"
3231 LIBSUF=".a"
3232 FULLNAME='$(NAME)$(BUILDSUF)'
3233 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3234 SLIBPREF="lib"
3235 SLIBSUF=".so"
3236 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3237 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3238 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3239 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3240 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3241 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3242 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3243
3244 asflags_filter=echo
3245 cflags_filter=echo
3246 ldflags_filter=echo
3247
3248 AS_C='-c'
3249 AS_O='-o $@'
3250 CC_C='-c'
3251 CC_E='-E -o $@'
3252 CC_O='-o $@'
3253 CXX_C='-c'
3254 CXX_O='-o $@'
3255 OBJCC_C='-c'
3256 OBJCC_E='-E -o $@'
3257 OBJCC_O='-o $@'
3258 LD_O='-o $@'
3259 LD_LIB='-l%'
3260 LD_PATH='-L'
3261 HOSTCC_C='-c'
3262 HOSTCC_E='-E -o $@'
3263 HOSTCC_O='-o $@'
3264 HOSTLD_O='-o $@'
3265
3266 host_libs='-lm'
3267 host_cflags_filter=echo
3268 host_ldflags_filter=echo
3269
3270 target_path='$(CURDIR)'
3271
3272 # since the object filename is not given with the -MM flag, the compiler
3273 # is only able to print the basename, and we must add the path ourselves
3274 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3275 DEPFLAGS='-MM'
3276
3277 # find source path
3278 if test -f configure; then
3279     source_path=.
3280 else
3281     source_path=$(cd $(dirname "$0"); pwd)
3282     case "$source_path" in
3283         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3284     esac
3285     test -e "$source_path/config.h" &&
3286         die "Out of tree builds are impossible with config.h in source dir."
3287 fi
3288
3289 for v in "$@"; do
3290     r=${v#*=}
3291     l=${v%"$r"}
3292     r=$(sh_quote "$r")
3293     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3294 done
3295
3296 find_things(){
3297     thing=$1
3298     pattern=$2
3299     file=$source_path/$3
3300     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3301 }
3302
3303 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3304 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3305 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3306 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3307 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3308 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3309 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3310 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3311 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3312
3313 find_things_extern(){
3314     thing=$1
3315     pattern=$2
3316     file=$source_path/$3
3317     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3318 }
3319
3320 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3321 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3322
3323 ALL_COMPONENTS="
3324     $BSF_LIST
3325     $DECODER_LIST
3326     $DEMUXER_LIST
3327     $ENCODER_LIST
3328     $FILTER_LIST
3329     $HWACCEL_LIST
3330     $INDEV_LIST
3331     $MUXER_LIST
3332     $OUTDEV_LIST
3333     $PARSER_LIST
3334     $PROTOCOL_LIST
3335 "
3336
3337 for n in $COMPONENT_LIST; do
3338     v=$(toupper ${n%s})_LIST
3339     eval enable \$$v
3340     eval ${n}_if_any="\$$v"
3341 done
3342
3343 enable $ARCH_EXT_LIST
3344
3345 die_unknown(){
3346     echo "Unknown option \"$1\"."
3347     echo "See $0 --help for available options."
3348     exit 1
3349 }
3350
3351 print_in_columns() {
3352     cols=$(expr $ncols / 24)
3353     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3354 }
3355
3356 show_list() {
3357     suffix=_$1
3358     shift
3359     echo $* | sed s/$suffix//g | print_in_columns
3360     exit 0
3361 }
3362
3363 rand_list(){
3364     IFS=', '
3365     set -- $*
3366     unset IFS
3367     for thing; do
3368         comp=${thing%:*}
3369         prob=${thing#$comp}
3370         prob=${prob#:}
3371         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3372         echo "prob ${prob:-0.5}"
3373         printf '%s\n' $comp
3374     done
3375 }
3376
3377 do_random(){
3378     action=$1
3379     shift
3380     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3381     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3382 }
3383
3384 for opt do
3385     optval="${opt#*=}"
3386     case "$opt" in
3387         --extra-ldflags=*)
3388             add_ldflags $optval
3389         ;;
3390         --extra-ldexeflags=*)
3391             add_ldexeflags $optval
3392         ;;
3393         --extra-ldlibflags=*)
3394             add_ldlibflags $optval
3395         ;;
3396         --extra-libs=*)
3397             add_extralibs $optval
3398         ;;
3399         --disable-devices)
3400             disable $INDEV_LIST $OUTDEV_LIST
3401         ;;
3402         --enable-debug=*)
3403             debuglevel="$optval"
3404         ;;
3405         --disable-programs)
3406             disable $PROGRAM_LIST
3407         ;;
3408         --disable-everything)
3409             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3410         ;;
3411         --disable-all)
3412             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3413             disable $LIBRARY_LIST $PROGRAM_LIST doc
3414             enable avutil
3415         ;;
3416         --enable-random|--disable-random)
3417             action=${opt%%-random}
3418             do_random ${action#--} $COMPONENT_LIST
3419         ;;
3420         --enable-random=*|--disable-random=*)
3421             action=${opt%%-random=*}
3422             do_random ${action#--} $optval
3423         ;;
3424         --enable-*=*|--disable-*=*)
3425             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3426             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3427             eval list=\$$(toupper $thing)_LIST
3428             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3429             list=$(filter "$name" $list)
3430             [ "$list" = "" ] && warn "Option $opt did not match anything"
3431             $action $list
3432         ;;
3433         --enable-?*|--disable-?*)
3434             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3435             if is_in $option $COMPONENT_LIST; then
3436                 test $action = disable && action=unset
3437                 eval $action \$$(toupper ${option%s})_LIST
3438             elif is_in $option $CMDLINE_SELECT; then
3439                 $action $option
3440             else
3441                 die_unknown $opt
3442             fi
3443         ;;
3444         --list-*)
3445             NAME="${opt#--list-}"
3446             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3447             NAME=${NAME%s}
3448             eval show_list $NAME \$$(toupper $NAME)_LIST
3449         ;;
3450         --help|-h) show_help
3451         ;;
3452         --fatal-warnings) enable fatal_warnings
3453         ;;
3454         *)
3455             optname="${opt%%=*}"
3456             optname="${optname#--}"
3457             optname=$(echo "$optname" | sed 's/-/_/g')
3458             if is_in $optname $CMDLINE_SET; then
3459                 eval $optname='$optval'
3460             elif is_in $optname $CMDLINE_APPEND; then
3461                 append $optname "$optval"
3462             else
3463                 die_unknown $opt
3464             fi
3465         ;;
3466     esac
3467 done
3468
3469 for e in $env; do
3470     eval "export $e"
3471 done
3472
3473 disabled logging && logfile=/dev/null
3474
3475 # Disable all the library-specific components if the library itself
3476 # is disabled, see AVCODEC_LIST and following _LIST variables.
3477
3478 disable_components(){
3479     disabled ${1} && disable $(
3480         eval components="\$$(toupper ${1})_COMPONENTS"
3481         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3482     )
3483 }
3484
3485 map 'disable_components $v' $LIBRARY_LIST
3486
3487 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3488 set >> $logfile
3489
3490 test -n "$valgrind" && toolchain="valgrind-memcheck"
3491
3492 case "$toolchain" in
3493     *-asan)
3494         cc_default="${toolchain%-asan}"
3495         add_cflags  -fsanitize=address
3496         add_ldflags -fsanitize=address
3497     ;;
3498     *-msan)
3499         cc_default="${toolchain%-msan}"
3500         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3501         add_ldflags -fsanitize=memory
3502     ;;
3503     *-tsan)
3504         cc_default="${toolchain%-tsan}"
3505         add_cflags  -fsanitize=thread -pie
3506         add_ldflags -fsanitize=thread -pie
3507         case "$toolchain" in
3508             gcc-tsan)
3509                 add_cflags  -fPIC
3510                 add_ldflags -fPIC
3511                 ;;
3512         esac
3513     ;;
3514     *-usan)
3515         cc_default="${toolchain%-usan}"
3516         add_cflags  -fsanitize=undefined
3517         add_ldflags -fsanitize=undefined
3518     ;;
3519     valgrind-*)
3520         target_exec_default="valgrind"
3521         case "$toolchain" in
3522             valgrind-massif)
3523                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3524                 ;;
3525             valgrind-memcheck)
3526                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3527                 ;;
3528         esac
3529     ;;
3530     msvc)
3531         # Check whether the current MSVC version needs the C99 converter.
3532         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3533         # support enough of C99 to build ffmpeg. Default to the new
3534         # behaviour if the regexp was unable to match anything, since this
3535         # successfully parses the version number of existing supported
3536         # versions that require the converter (MSVC 2010 and 2012).
3537         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3538         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3539             cc_default="cl"
3540         else
3541             cc_default="c99wrap cl"
3542         fi
3543         ld_default="$source_path/compat/windows/mslink"
3544         nm_default="dumpbin -symbols"
3545         ar_default="lib"
3546         case "$arch" in
3547         arm*)
3548             as_default="armasm"
3549             ;;
3550         esac
3551         target_os_default="win32"
3552         # Use a relative path for TMPDIR. This makes sure all the
3553         # ffconf temp files are written with a relative path, avoiding
3554         # issues with msys/win32 path conversion for MSVC parameters
3555         # such as -Fo<file> or -out:<file>.
3556         TMPDIR=.
3557     ;;
3558     icl)
3559         cc_default="icl"
3560         ld_default="xilink"
3561         nm_default="dumpbin -symbols"
3562         ar_default="xilib"
3563         target_os_default="win32"
3564         TMPDIR=.
3565     ;;
3566     gcov)
3567         add_cflags  -fprofile-arcs -ftest-coverage
3568         add_ldflags -fprofile-arcs -ftest-coverage
3569     ;;
3570     llvm-cov)
3571         add_cflags -fprofile-arcs -ftest-coverage
3572         add_ldflags --coverage
3573     ;;
3574     hardened)
3575         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3576         add_cflags   -fno-strict-overflow -fstack-protector-all
3577         add_ldflags  -Wl,-z,relro -Wl,-z,now
3578     ;;
3579     ?*)
3580         die "Unknown toolchain $toolchain"
3581     ;;
3582 esac
3583
3584 test -n "$cross_prefix" && enable cross_compile
3585
3586 if enabled cross_compile; then
3587     test -n "$arch" && test -n "$target_os" ||
3588         die "Must specify target arch and OS when cross-compiling"
3589 fi
3590
3591 ar_default="${cross_prefix}${ar_default}"
3592 cc_default="${cross_prefix}${cc_default}"
3593 cxx_default="${cross_prefix}${cxx_default}"
3594 nm_default="${cross_prefix}${nm_default}"
3595 pkg_config_default="${cross_prefix}${pkg_config_default}"
3596 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3597     ranlib_default="${cross_prefix}${ranlib_default} -D"
3598 else
3599     ranlib_default="${cross_prefix}${ranlib_default}"
3600 fi
3601 strip_default="${cross_prefix}${strip_default}"
3602 windres_default="${cross_prefix}${windres_default}"
3603
3604 sysinclude_default="${sysroot}/usr/include"
3605
3606 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3607     target_exec target_os yasmexe
3608 enabled cross_compile || host_cc_default=$cc
3609 set_default host_cc
3610
3611 pkg_config_fail_message=""
3612 if ! $pkg_config --version >/dev/null 2>&1; then
3613     warn "$pkg_config not found, library detection may fail."
3614     pkg_config=false
3615 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3616     pkg_config_fail_message="
3617 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3618 fi
3619
3620 if test $doxygen != $doxygen_default && \
3621   ! $doxygen --version >/dev/null 2>&1; then
3622     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3623 fi
3624
3625 exesuf() {
3626     case $1 in
3627         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3628     esac
3629 }
3630
3631 EXESUF=$(exesuf $target_os)
3632 HOSTEXESUF=$(exesuf $host_os)
3633
3634 # set temporary file name
3635 : ${TMPDIR:=$TEMPDIR}
3636 : ${TMPDIR:=$TMP}
3637 : ${TMPDIR:=/tmp}
3638
3639 if [ -n "$tempprefix" ] ; then
3640     mktemp(){
3641         echo $tempprefix.${HOSTNAME}.${UID}
3642     }
3643 elif ! check_cmd mktemp -u XXXXXX; then
3644     # simple replacement for missing mktemp
3645     # NOT SAFE FOR GENERAL USE
3646     mktemp(){
3647         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3648     }
3649 fi
3650
3651 tmpfile(){
3652     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3653         (set -C; exec > $tmp) 2>/dev/null ||
3654         die "Unable to create temporary file in $TMPDIR."
3655     append TMPFILES $tmp
3656     eval $1=$tmp
3657 }
3658
3659 trap 'rm -f -- $TMPFILES' EXIT
3660
3661 tmpfile TMPASM .asm
3662 tmpfile TMPC   .c
3663 tmpfile TMPCPP .cpp
3664 tmpfile TMPE   $EXESUF
3665 tmpfile TMPH   .h
3666 tmpfile TMPM   .m
3667 tmpfile TMPO   .o
3668 tmpfile TMPS   .S
3669 tmpfile TMPSH  .sh
3670 tmpfile TMPV   .ver
3671
3672 unset -f mktemp
3673
3674 chmod +x $TMPE
3675
3676 # make sure we can execute files in $TMPDIR
3677 cat > $TMPSH 2>> $logfile <<EOF
3678 #! /bin/sh
3679 EOF
3680 chmod +x $TMPSH >> $logfile 2>&1
3681 if ! $TMPSH >> $logfile 2>&1; then
3682     cat <<EOF
3683 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3684 variable to another directory and make sure that it is not mounted noexec.
3685 EOF
3686     die "Sanity test failed."
3687 fi
3688
3689 armasm_flags(){
3690     for flag; do
3691         case $flag in
3692             # Filter out MSVC cl.exe options from cflags that shouldn't
3693             # be passed to gas-preprocessor
3694             -M[TD]*)                                            ;;
3695             *)                  echo $flag                      ;;
3696         esac
3697    done
3698 }
3699
3700 ccc_flags(){
3701     for flag; do
3702         case $flag in
3703             -std=c99)           echo -c99                       ;;
3704             -mcpu=*)            echo -arch ${flag#*=}           ;;
3705             -mieee)             echo -ieee                      ;;
3706             -O*|-fast)          echo $flag                      ;;
3707             -fno-math-errno)    echo -assume nomath_errno       ;;
3708             -g)                 echo -g3                        ;;
3709             -Wall)              echo -msg_enable level2         ;;
3710             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3711             -Wl,*)              echo $flag                      ;;
3712             -f*|-W*)                                            ;;
3713             *)                  echo $flag                      ;;
3714         esac
3715    done
3716 }
3717
3718 cparser_flags(){
3719     for flag; do
3720         case $flag in
3721             -Wno-switch)             echo -Wno-switch-enum ;;
3722             -Wno-format-zero-length) ;;
3723             -Wdisabled-optimization) ;;
3724             -Wno-pointer-sign)       echo -Wno-other ;;
3725             *)                       echo $flag ;;
3726         esac
3727     done
3728 }
3729
3730 msvc_common_flags(){
3731     for flag; do
3732         case $flag in
3733             # In addition to specifying certain flags under the compiler
3734             # specific filters, they must be specified here as well or else the
3735             # generic catch all at the bottom will print the original flag.
3736             -Wall)                ;;
3737             -std=c99)             ;;
3738             # Common flags
3739             -fomit-frame-pointer) ;;
3740             -g)                   echo -Z7 ;;
3741             -fno-math-errno)      ;;
3742             -fno-common)          ;;
3743             -fno-signed-zeros)    ;;
3744             -fPIC)                ;;
3745             -mthumb)              ;;
3746             -march=*)             ;;
3747             -lz)                  echo zlib.lib ;;
3748             -lavifil32)           echo vfw32.lib ;;
3749             -lavicap32)           echo vfw32.lib user32.lib ;;
3750             -lx264)               echo libx264.lib ;;
3751             -l*)                  echo ${flag#-l}.lib ;;
3752             -LARGEADDRESSAWARE)   echo $flag ;;
3753             -L*)                  echo -libpath:${flag#-L} ;;
3754             *)                    echo $flag ;;
3755         esac
3756     done
3757 }
3758
3759 msvc_flags(){
3760     msvc_common_flags "$@"
3761     for flag; do
3762         case $flag in
3763             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3764                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3765                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3766                                        -wd4307 \
3767                                        -wd4273 -wd4554 -wd4701 ;;
3768         esac
3769     done
3770 }
3771
3772 icl_flags(){
3773     msvc_common_flags "$@"
3774     for flag; do
3775         case $flag in
3776             # Despite what Intel's documentation says -Wall, which is supported
3777             # on Windows, does enable remarks so disable them here.
3778             -Wall)                echo $flag -Qdiag-disable:remark ;;
3779             -std=c99)             echo -Qstd=c99 ;;
3780             -flto)                echo -ipo ;;
3781         esac
3782     done
3783 }
3784
3785 icc_flags(){
3786     for flag; do
3787         case $flag in
3788             -flto)                echo -ipo ;;
3789             *)                    echo $flag ;;
3790         esac
3791     done
3792 }
3793
3794 pgi_flags(){
3795     for flag; do
3796         case $flag in
3797             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3798             -fomit-frame-pointer) echo -Mnoframe ;;
3799             -g)                   echo -gopt ;;
3800             *)                    echo $flag ;;
3801         esac
3802     done
3803 }
3804
3805 suncc_flags(){
3806     for flag; do
3807         case $flag in
3808             -march=*|-mcpu=*)
3809                 case "${flag#*=}" in
3810                     native)                   echo -xtarget=native       ;;
3811                     v9|niagara)               echo -xarch=sparc          ;;
3812                     ultrasparc)               echo -xarch=sparcvis       ;;
3813                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3814                     i586|pentium)             echo -xchip=pentium        ;;
3815                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3816                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3817                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3818                     pentium4*)          echo -xtarget=pentium4           ;;
3819                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3820                     *-sse3)             echo -xarch=sse3                 ;;
3821                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3822                     bonnell)                   echo -xarch=ssse3         ;;
3823                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3824                     westmere)                  echo -xtarget=westmere    ;;
3825                     silvermont)                echo -xarch=sse4_2        ;;
3826                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3827                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3828                                                echo -xarch=avx           ;;
3829                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3830                     btver1)                    echo -xarch=amdsse4a      ;;
3831                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3832                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3833                     k8|opteron|athlon64|athlon-fx)
3834                                                echo -xarch=sse2a         ;;
3835                     athlon*)                   echo -xarch=pentium_proa  ;;
3836                 esac
3837                 ;;
3838             -std=c99)             echo -xc99              ;;
3839             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3840             -fPIC)                echo -KPIC -xcode=pic32 ;;
3841             -W*,*)                echo $flag              ;;
3842             -f*-*|-W*|-mimpure-text)                      ;;
3843             -shared)              echo -G                 ;;
3844             *)                    echo $flag              ;;
3845         esac
3846     done
3847 }
3848
3849 tms470_flags(){
3850     for flag; do
3851         case $flag in
3852             -march=*|-mcpu=*)
3853                 case "${flag#*=}" in
3854                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3855                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3856                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3857                     armv6*|arm11*)          echo -mv=6   ;;
3858                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3859                                             echo -mv=5e  ;;
3860                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3861                 esac
3862                 ;;
3863             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3864             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3865             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3866             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3867             -msoft-float)   echo --float_support=vfplib       ;;
3868             -O[0-3]|-mf=*)  echo $flag                        ;;
3869             -g)             echo -g -mn                       ;;
3870             -pds=*)         echo $flag                        ;;
3871             -D*|-I*)        echo $flag                        ;;
3872             --gcc|--abi=*)  echo $flag                        ;;
3873             -me)            echo $flag                        ;;
3874         esac
3875     done
3876 }
3877
3878 probe_cc(){
3879     pfx=$1
3880     _cc=$2
3881     first=$3
3882
3883     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3884     unset _ld_o _ldflags _ld_lib _ld_path
3885     unset _depflags _DEPCMD _DEPFLAGS
3886     _flags_filter=echo
3887
3888     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3889         true # no-op to avoid reading stdin in following checks
3890     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3891         _type=llvm_gcc
3892         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3893         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3894         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3895         _cflags_speed='-O3'
3896         _cflags_size='-Os'
3897     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3898         _type=gcc
3899         gcc_version=$($_cc --version | head -n1)
3900         gcc_basever=$($_cc -dumpversion)
3901         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3902         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3903         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3904         case $gcc_basever in
3905             2) ;;
3906             2.*) ;;
3907             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3908         esac
3909         if [ "$first" = true ]; then
3910             case $gcc_basever in
3911                 4.2*)
3912                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3913             esac
3914         fi
3915         _cflags_speed='-O3'
3916         _cflags_size='-Os'
3917     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3918         _type=icc
3919         _ident=$($_cc --version | head -n1)
3920         _depflags='-MMD'
3921         _cflags_speed='-O3'
3922         _cflags_size='-Os'
3923         _cflags_noopt='-O1'
3924         _flags_filter=icc_flags
3925     elif $_cc -v 2>&1 | grep -q xlc; then
3926         _type=xlc
3927         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3928         _cflags_speed='-O5'
3929         _cflags_size='-O5 -qcompact'
3930     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3931         _type=ccc
3932         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3933         _DEPFLAGS='-M'
3934         _cflags_speed='-fast'
3935         _cflags_size='-O1'
3936         _flags_filter=ccc_flags
3937     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3938         test -d "$sysroot" || die "No valid sysroot specified."
3939         _type=armcc
3940         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3941         armcc_conf="$PWD/armcc.conf"
3942         $_cc --arm_linux_configure                 \
3943              --arm_linux_config_file="$armcc_conf" \
3944              --configure_sysroot="$sysroot"        \
3945              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3946              die "Error creating armcc configuration file."
3947         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3948         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3949         as_default="${cross_prefix}gcc"
3950         _depflags='-MMD'
3951         _cflags_speed='-O3'
3952         _cflags_size='-Os'
3953     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3954         _type=tms470
3955         _ident=$($_cc -version | head -n1 | tr -s ' ')
3956         _flags='--gcc --abi=eabi -me'
3957         _cc_e='-ppl -fe=$@'
3958         _cc_o='-fe=$@'
3959         _depflags='-ppa -ppd=$(@:.o=.d)'
3960         _cflags_speed='-O3 -mf=5'
3961         _cflags_size='-O3 -mf=2'
3962         _flags_filter=tms470_flags
3963     elif $_cc -v 2>&1 | grep -q clang; then
3964         _type=clang
3965         _ident=$($_cc --version 2>/dev/null | head -n1)
3966         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3967         _cflags_speed='-O3'
3968         _cflags_size='-Os'
3969     elif $_cc -V 2>&1 | grep -q Sun; then
3970         _type=suncc
3971         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3972         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3973         _DEPFLAGS='-xM1 -xc99'
3974         _ldflags='-std=c99'
3975         _cflags_speed='-O5'
3976         _cflags_size='-O5 -xspace'
3977         _flags_filter=suncc_flags
3978     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3979         _type=pathscale
3980         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3981         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3982         _cflags_speed='-O2'
3983         _cflags_size='-Os'
3984         _flags_filter='filter_out -Wdisabled-optimization'
3985     elif $_cc -v 2>&1 | grep -q Open64; then
3986         _type=open64
3987         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3988         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3989         _cflags_speed='-O2'
3990         _cflags_size='-Os'
3991         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3992     elif $_cc -V 2>&1 | grep -q Portland; then
3993         _type=pgi
3994         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3995         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3996         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3997         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3998         _cflags_noopt="-O"
3999         _flags_filter=pgi_flags
4000     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4001         _type=armasm
4002         _ident=$($_cc | head -n1)
4003         # 4509: "This form of conditional instruction is deprecated"
4004         _flags="-nologo -ignore 4509"
4005         _flags_filter=armasm_flags
4006     elif $_cc 2>&1 | grep -q Intel; then
4007         _type=icl
4008         _ident=$($_cc 2>&1 | head -n1)
4009         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4010         # Not only is O3 broken on 13.x+ but it is slower on all previous
4011         # versions (tested) as well.
4012         _cflags_speed="-O2"
4013         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4014         if $_cc 2>&1 | grep -q Linker; then
4015             _ld_o='-out:$@'
4016         else
4017             _ld_o='-Fe$@'
4018         fi
4019         _cc_o='-Fo$@'
4020         _cc_e='-P'
4021         _flags_filter=icl_flags
4022         _ld_lib='lib%.a'
4023         _ld_path='-libpath:'
4024         # -Qdiag-error to make icl error when seeing certain unknown arguments
4025         _flags='-nologo -Qdiag-error:4044,10157'
4026         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4027         # with MSVC which enables it by default.
4028         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4029         disable stripping
4030     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4031         _type=msvc
4032         _ident=$($_cc 2>&1 | head -n1)
4033         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4034         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4035         _cflags_speed="-O2"
4036         _cflags_size="-O1"
4037         if $_cc -nologo- 2>&1 | grep -q Linker; then
4038             _ld_o='-out:$@'
4039         else
4040             _ld_o='-Fe$@'
4041         fi
4042         _cc_o='-Fo$@'
4043         _cc_e='-P -Fi$@'
4044         _flags_filter=msvc_flags
4045         _ld_lib='lib%.a'
4046         _ld_path='-libpath:'
4047         _flags='-nologo'
4048         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4049         disable stripping
4050     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4051         _type=cparser
4052         _ident=$($_cc --version | head -n1)
4053         _depflags='-MMD'
4054         _cflags_speed='-O4'
4055         _cflags_size='-O2'
4056         _flags_filter=cparser_flags
4057     fi
4058
4059     eval ${pfx}_type=\$_type
4060     eval ${pfx}_ident=\$_ident
4061 }
4062
4063 set_ccvars(){
4064     eval ${1}_C=\${_cc_c-\${${1}_C}}
4065     eval ${1}_E=\${_cc_e-\${${1}_E}}
4066     eval ${1}_O=\${_cc_o-\${${1}_O}}
4067
4068     if [ -n "$_depflags" ]; then
4069         eval ${1}_DEPFLAGS=\$_depflags
4070     else
4071         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4072         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4073         eval DEP${1}FLAGS=\$_flags
4074     fi
4075 }
4076
4077 probe_cc cc "$cc" "true"
4078 cflags_filter=$_flags_filter
4079 cflags_speed=$_cflags_speed
4080 cflags_size=$_cflags_size
4081 cflags_noopt=$_cflags_noopt
4082 add_cflags $_flags $_cflags
4083 cc_ldflags=$_ldflags
4084 set_ccvars CC
4085
4086 probe_cc hostcc "$host_cc"
4087 host_cflags_filter=$_flags_filter
4088 add_host_cflags  $_flags $_cflags
4089 set_ccvars HOSTCC
4090
4091 test -n "$cc_type" && enable $cc_type ||
4092     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4093
4094 : ${as_default:=$cc}
4095 : ${objcc_default:=$cc}
4096 : ${dep_cc_default:=$cc}
4097 : ${ld_default:=$cc}
4098 : ${host_ld_default:=$host_cc}
4099 set_default ar as objcc dep_cc ld ln_s host_ld windres
4100
4101 probe_cc as "$as"
4102 asflags_filter=$_flags_filter
4103 add_asflags $_flags $_cflags
4104 set_ccvars AS
4105
4106 probe_cc objcc "$objcc"
4107 objcflags_filter=$_flags_filter
4108 add_objcflags $_flags $_cflags
4109 set_ccvars OBJC
4110
4111 probe_cc ld "$ld"
4112 ldflags_filter=$_flags_filter
4113 add_ldflags $_flags $_ldflags
4114 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4115 LD_O=${_ld_o-$LD_O}
4116 LD_LIB=${_ld_lib-$LD_LIB}
4117 LD_PATH=${_ld_path-$LD_PATH}
4118
4119 probe_cc hostld "$host_ld"
4120 host_ldflags_filter=$_flags_filter
4121 add_host_ldflags $_flags $_ldflags
4122 HOSTLD_O=${_ld_o-$HOSTLD_O}
4123
4124 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4125     probe_cc depcc "$dep_cc"
4126     CCDEP=${_DEPCMD:-$DEPCMD}
4127     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4128     DEPCCFLAGS=$_flags
4129 fi
4130
4131 if $ar 2>&1 | grep -q Microsoft; then
4132     arflags="-nologo"
4133     ar_o='-out:$@'
4134 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4135     arflags="rq"
4136     ar_o='$@'
4137 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4138     arflags='-Xany -r -c'
4139     ar_o='$@'
4140 elif $ar 2>&1 | grep -q "\[D\] "; then
4141     arflags="rcD"
4142     ar_o='$@'
4143 else
4144     arflags="rc"
4145     ar_o='$@'
4146 fi
4147
4148 add_cflags $extra_cflags
4149 add_cxxflags $extra_cxxflags
4150 add_objcflags $extra_objcflags
4151 add_asflags $extra_cflags
4152
4153 if test -n "$sysroot"; then
4154     case "$cc_type" in
4155         gcc|llvm_gcc|clang)
4156             add_cppflags --sysroot="$sysroot"
4157             add_ldflags --sysroot="$sysroot"
4158 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4159             add_cppflags -isysroot "$sysroot"
4160             add_ldflags -isysroot "$sysroot"
4161         ;;
4162         tms470)
4163             add_cppflags -I"$sysinclude"
4164             add_ldflags  --sysroot="$sysroot"
4165         ;;
4166     esac
4167 fi
4168
4169 if test "$cpu" = host; then
4170     enabled cross_compile &&
4171         die "--cpu=host makes no sense when cross-compiling."
4172
4173     case "$cc_type" in
4174         gcc|llvm_gcc)
4175             check_native(){
4176                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4177                 sed -n "/cc1.*$1=/{
4178                             s/.*$1=\\([^ ]*\\).*/\\1/
4179                             p
4180                             q
4181                         }" $TMPE
4182             }
4183             cpu=$(check_native -march || check_native -mcpu)
4184         ;;
4185         clang)
4186             check_native(){
4187                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4188                 sed -n "/cc1.*-target-cpu /{
4189                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4190                             p
4191                             q
4192                         }" $TMPE
4193             }
4194             cpu=$(check_native -march)
4195         ;;
4196     esac
4197
4198     test "${cpu:-host}" = host &&
4199         die "--cpu=host not supported with compiler $cc"
4200 fi
4201
4202 # Deal with common $arch aliases
4203 case "$arch" in
4204     aarch64|arm64)
4205         arch="aarch64"
4206     ;;
4207     arm*|iPad*|iPhone*)
4208         arch="arm"
4209     ;;
4210     mips*|IP*)
4211         case "$arch" in
4212         *el)
4213             add_cppflags -EL
4214             add_ldflags -EL
4215         ;;
4216         *eb)
4217             add_cppflags -EB
4218             add_ldflags -EB
4219         ;;
4220         esac
4221         arch="mips"
4222     ;;
4223     parisc*|hppa*)
4224         arch="parisc"
4225     ;;
4226     "Power Macintosh"|ppc*|powerpc*)
4227         arch="ppc"
4228     ;;
4229     s390|s390x)
4230         arch="s390"
4231     ;;
4232     sh4|sh)
4233         arch="sh4"
4234     ;;
4235     sun4*|sparc*)
4236         arch="sparc"
4237     ;;
4238     tilegx|tile-gx)
4239         arch="tilegx"
4240     ;;
4241     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4242         arch="x86"
4243     ;;
4244 esac
4245
4246 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4247 enable $arch
4248
4249 # Add processor-specific flags
4250 if enabled aarch64; then
4251
4252     case $cpu in
4253         armv*)
4254             cpuflags="-march=$cpu"
4255         ;;
4256         *)
4257             cpuflags="-mcpu=$cpu"
4258         ;;
4259     esac
4260
4261 elif enabled alpha; then
4262
4263     cpuflags="-mcpu=$cpu"
4264
4265 elif enabled arm; then
4266
4267     check_arm_arch() {
4268         check_cpp_condition stddef.h \
4269             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4270             $cpuflags
4271     }
4272
4273     probe_arm_arch() {
4274         if   check_arm_arch 4;        then echo armv4
4275         elif check_arm_arch 4T;       then echo armv4t
4276         elif check_arm_arch 5;        then echo armv5
4277         elif check_arm_arch 5E;       then echo armv5e
4278         elif check_arm_arch 5T;       then echo armv5t
4279         elif check_arm_arch 5TE;      then echo armv5te
4280         elif check_arm_arch 5TEJ;     then echo armv5te
4281         elif check_arm_arch 6;        then echo armv6
4282         elif check_arm_arch 6J;       then echo armv6j
4283         elif check_arm_arch 6K;       then echo armv6k
4284         elif check_arm_arch 6Z;       then echo armv6z
4285         elif check_arm_arch 6ZK;      then echo armv6zk
4286         elif check_arm_arch 6T2;      then echo armv6t2
4287         elif check_arm_arch 7;        then echo armv7
4288         elif check_arm_arch 7A  7_A;  then echo armv7-a
4289         elif check_arm_arch 7S;       then echo armv7-a
4290         elif check_arm_arch 7R  7_R;  then echo armv7-r
4291         elif check_arm_arch 7M  7_M;  then echo armv7-m
4292         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4293         elif check_arm_arch 8A  8_A;  then echo armv8-a
4294         fi
4295     }
4296
4297     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4298
4299     case $cpu in
4300         armv*)
4301             cpuflags="-march=$cpu"
4302             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4303         ;;
4304         *)
4305             cpuflags="-mcpu=$cpu"
4306             case $cpu in
4307                 cortex-a*)                               subarch=armv7a  ;;
4308                 cortex-r*)                               subarch=armv7r  ;;
4309                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4310                 arm11*)                                  subarch=armv6   ;;
4311                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4312                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4313                 *)                             subarch=$(probe_arm_arch) ;;
4314             esac
4315         ;;
4316     esac
4317
4318     case "$subarch" in
4319         armv5t*)    enable fast_clz                ;;
4320         armv[6-8]*)
4321             enable fast_clz
4322             disabled fast_unaligned || enable fast_unaligned
4323             ;;
4324     esac
4325
4326 elif enabled avr32; then
4327
4328     case $cpu in
4329         ap7[02]0[0-2])
4330             subarch="avr32_ap"
4331             cpuflags="-mpart=$cpu"
4332         ;;
4333         ap)
4334             subarch="avr32_ap"
4335             cpuflags="-march=$cpu"
4336         ;;
4337         uc3[ab]*)
4338             subarch="avr32_uc"
4339             cpuflags="-mcpu=$cpu"
4340         ;;
4341         uc)
4342             subarch="avr32_uc"
4343             cpuflags="-march=$cpu"
4344         ;;
4345     esac
4346
4347 elif enabled bfin; then
4348
4349     cpuflags="-mcpu=$cpu"
4350
4351 elif enabled mips; then
4352
4353     cpuflags="-march=$cpu"
4354
4355     if [ "$cpu" != "generic" ]; then
4356         disable mips32r2
4357         disable mips32r5
4358         disable mips64r2
4359         disable mips32r6
4360         disable mips64r6
4361         disable loongson2
4362         disable loongson3
4363
4364         case $cpu in
4365             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4366                 enable mips32r2
4367                 disable msa
4368             ;;
4369             p5600|i6400|p6600)
4370                 disable mipsdsp
4371                 disable mipsdspr2
4372             ;;
4373             loongson*)
4374                 enable loongson2
4375                 enable loongson3
4376                 enable local_aligned_8 local_aligned_16 local_aligned_32
4377                 enable simd_align_16
4378                 enable fast_64bit
4379                 enable fast_clz
4380                 enable fast_cmov
4381                 enable fast_unaligned
4382                 disable aligned_stack
4383                 case $cpu in
4384                     loongson3*)
4385                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4386                     ;;
4387                     loongson2e)
4388                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4389                     ;;
4390                     loongson2f)
4391                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4392                     ;;
4393                 esac
4394             ;;
4395             *)
4396                 # Unknown CPU. Disable everything.
4397                 warn "unknown CPU. Disabling all MIPS optimizations."
4398                 disable mipsfpu
4399                 disable mipsdsp
4400                 disable mipsdspr2
4401                 disable msa
4402                 disable mmi
4403             ;;
4404         esac
4405
4406         case $cpu in
4407             24kc)
4408                 disable mipsfpu
4409                 disable mipsdsp
4410                 disable mipsdspr2
4411             ;;
4412             24kf*)
4413                 disable mipsdsp
4414                 disable mipsdspr2
4415             ;;
4416             24kec|34kc|1004kc)
4417                 disable mipsfpu
4418                 disable mipsdspr2
4419             ;;
4420             24kef*|34kf*|1004kf*)
4421                 disable mipsdspr2
4422             ;;
4423             74kc)
4424                 disable mipsfpu
4425             ;;
4426             p5600)
4427                 enable mips32r5
4428                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4429             ;;
4430             i6400)
4431                 enable mips64r6
4432                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4433             ;;
4434             p6600)
4435                 enable mips64r6
4436                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4437             ;;
4438         esac
4439     else
4440         # We do not disable anything. Is up to the user to disable the unwanted features.
4441         warn 'generic cpu selected'
4442     fi
4443
4444 elif enabled ppc; then
4445
4446     disable ldbrx
4447
4448     case $(tolower $cpu) in
4449         601|ppc601|powerpc601)
4450             cpuflags="-mcpu=601"
4451             disable altivec
4452         ;;
4453         603*|ppc603*|powerpc603*)
4454             cpuflags="-mcpu=603"
4455             disable altivec
4456         ;;
4457         604*|ppc604*|powerpc604*)
4458             cpuflags="-mcpu=604"
4459             disable altivec
4460         ;;
4461         g3|75*|ppc75*|powerpc75*)
4462             cpuflags="-mcpu=750"
4463             disable altivec
4464         ;;
4465         g4|745*|ppc745*|powerpc745*)
4466             cpuflags="-mcpu=7450"
4467             disable vsx
4468         ;;
4469         74*|ppc74*|powerpc74*)
4470             cpuflags="-mcpu=7400"
4471             disable vsx
4472         ;;
4473         g5|970|ppc970|powerpc970)
4474             cpuflags="-mcpu=970"
4475             disable vsx
4476         ;;
4477         power[3-6]*)
4478             cpuflags="-mcpu=$cpu"
4479             disable vsx
4480         ;;
4481         power[7-8]*)
4482             cpuflags="-mcpu=$cpu"
4483         ;;
4484         cell)
4485             cpuflags="-mcpu=cell"
4486             enable ldbrx
4487             disable vsx
4488         ;;
4489         e500mc)
4490             cpuflags="-mcpu=e500mc"
4491             disable altivec
4492         ;;
4493         e500v2)
4494             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4495             disable altivec
4496             disable dcbzl
4497         ;;
4498         e500)
4499             cpuflags="-mcpu=8540 -mhard-float"
4500             disable altivec
4501             disable dcbzl
4502         ;;
4503     esac
4504
4505 elif enabled sparc; then
4506
4507     case $cpu in
4508         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4509             cpuflags="-mcpu=$cpu"
4510         ;;
4511         ultrasparc*|niagara[234])
4512             cpuflags="-mcpu=$cpu"
4513         ;;
4514     esac
4515
4516 elif enabled x86; then
4517
4518     case $cpu in
4519         i[345]86|pentium)
4520             cpuflags="-march=$cpu"
4521             disable i686
4522             disable mmx
4523         ;;
4524         # targets that do NOT support nopl and conditional mov (cmov)
4525         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4526             cpuflags="-march=$cpu"
4527             disable i686
4528         ;;
4529         # targets that do support nopl and conditional mov (cmov)
4530         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4531         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4532         |amdfam10|barcelona|b[dt]ver*|znver*)
4533             cpuflags="-march=$cpu"
4534             enable i686
4535             enable fast_cmov
4536         ;;
4537         # targets that do support conditional mov but on which it's slow
4538         pentium4|pentium4m|prescott|nocona)
4539             cpuflags="-march=$cpu"
4540             enable i686
4541             disable fast_cmov
4542         ;;
4543     esac
4544
4545 fi
4546
4547 if [ "$cpu" != generic ]; then
4548     add_cflags  $cpuflags
4549     add_asflags $cpuflags
4550     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4551 fi
4552
4553 # compiler sanity check
4554 check_exec <<EOF
4555 int main(void){ return 0; }
4556 EOF
4557 if test "$?" != 0; then
4558     echo "$cc is unable to create an executable file."
4559     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4560         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4561         echo "Only do this if you know what cross compiling means."
4562     fi
4563     die "C compiler test failed."
4564 fi
4565
4566 add_cppflags -D_ISOC99_SOURCE
4567 add_cxxflags -D__STDC_CONSTANT_MACROS
4568 add_cxxflags -std=c++98
4569 check_cflags -std=c99
4570 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4571 #include <stdlib.h>
4572 EOF
4573 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4574 #include <stdlib.h>
4575 EOF
4576
4577 add_host_cppflags -D_ISOC99_SOURCE
4578 check_host_cflags -std=c99
4579 check_host_cflags -Wall
4580 check_host_cflags -O3
4581
4582 check_64bit(){
4583     arch32=$1
4584     arch64=$2
4585     expr=$3
4586     check_code cc "" "int test[2*($expr) - 1]" &&
4587         subarch=$arch64 || subarch=$arch32
4588 }
4589
4590 case "$arch" in
4591     aarch64|alpha|ia64)
4592         spic=$shared
4593     ;;
4594     mips)
4595         check_64bit mips mips64 '_MIPS_SIM > 1'
4596         spic=$shared
4597     ;;
4598     parisc)
4599         check_64bit parisc parisc64 'sizeof(void *) > 4'
4600         spic=$shared
4601     ;;
4602     ppc)
4603         check_64bit ppc ppc64 'sizeof(void *) > 4'
4604         spic=$shared
4605     ;;
4606     s390)
4607         check_64bit s390 s390x 'sizeof(void *) > 4'
4608         spic=$shared
4609     ;;
4610     sparc)
4611         check_64bit sparc sparc64 'sizeof(void *) > 4'
4612         spic=$shared
4613     ;;
4614     x86)
4615         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4616         # Treat x32 as x64 for now. Note it also needs spic=$shared
4617         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4618             subarch=x86_64
4619         if test "$subarch" = "x86_64"; then
4620             spic=$shared
4621         fi
4622     ;;
4623     ppc)
4624         check_cc <<EOF && subarch="ppc64"
4625         int test[(int)sizeof(char*) - 7];
4626 EOF
4627     ;;
4628 esac
4629
4630 enable $subarch
4631 enabled spic && enable_weak pic
4632
4633 # OS specific
4634 case $target_os in
4635     aix)
4636         SHFLAGS=-shared
4637         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4638         enabled shared && add_ldflags -Wl,-brtl
4639         ;;
4640     android)
4641         disable symver
4642         enable section_data_rel_ro
4643         SLIB_INSTALL_NAME='$(SLIBNAME)'
4644         SLIB_INSTALL_LINKS=
4645         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4646         ;;
4647     haiku)
4648         prefix_default="/boot/common"
4649         network_extralibs="-lnetwork"
4650         host_libs=
4651         ;;
4652     sunos)
4653         SHFLAGS='-shared -Wl,-h,$$(@F)'
4654         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4655         network_extralibs="-lsocket -lnsl"
4656         add_cppflags -D__EXTENSIONS__
4657         # When using suncc to build, the Solaris linker will mark
4658         # an executable with each instruction set encountered by
4659         # the Solaris assembler.  As our libraries contain their own
4660         # guards for processor-specific code, instead suppress
4661         # generation of the HWCAPS ELF section on Solaris x86 only.
4662         enabled_all suncc x86 &&
4663             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4664             add_ldflags -Wl,-M,mapfile
4665         nm_default='nm -P -g'
4666         version_script='-M'
4667         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4668         ;;
4669     netbsd)
4670         disable symver
4671         oss_indev_extralibs="-lossaudio"
4672         oss_outdev_extralibs="-lossaudio"
4673         enabled gcc || check_ldflags -Wl,-zmuldefs
4674         ;;
4675     openbsd|bitrig)
4676         disable symver
4677         SHFLAGS='-shared'
4678         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4679         SLIB_INSTALL_LINKS=
4680         oss_indev_extralibs="-lossaudio"
4681         oss_outdev_extralibs="-lossaudio"
4682         ;;
4683     dragonfly)
4684         disable symver
4685         ;;
4686     freebsd)
4687         ;;
4688     bsd/os)
4689         add_extralibs -lpoll -lgnugetopt
4690         strip="strip -d"
4691         ;;
4692     darwin)
4693         enabled ppc && add_asflags -force_cpusubtype_ALL
4694         install_name_dir_default='$(SHLIBDIR)'
4695         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4696         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4697         strip="${strip} -x"
4698         add_ldflags -Wl,-dynamic,-search_paths_first
4699         SLIBSUF=".dylib"
4700         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4701         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4702         objformat="macho"
4703         enabled x86_64 && objformat="macho64"
4704         enabled_any pic shared x86_64 ||
4705             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4706         check_header dispatch/dispatch.h &&
4707             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4708         ;;
4709     msys*)
4710         die "Native MSYS builds are discouraged, please use the MINGW environment."
4711         ;;
4712     mingw32*|mingw64*)
4713         if test $target_os = "mingw32ce"; then
4714             disable network
4715         else
4716             target_os=mingw32
4717         fi
4718         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4719         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4720         LIBTARGET=i386
4721         if enabled x86_64; then
4722             LIBTARGET="i386:x86-64"
4723         elif enabled arm; then
4724             LIBTARGET=arm-wince
4725         fi
4726         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4727         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4728         shlibdir_default="$bindir_default"
4729         SLIBPREF=""
4730         SLIBSUF=".dll"
4731         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4732         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4733         dlltool="${cross_prefix}dlltool"
4734         if check_cmd lib.exe -list; then
4735             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4736             if enabled x86_64; then
4737                 LIBTARGET=x64
4738             fi
4739         elif check_cmd $dlltool --version; then
4740             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4741         fi
4742         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4743         SLIB_INSTALL_LINKS=
4744         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4745         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4746         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4747         objformat="win32"
4748         ranlib=:
4749         enable dos_paths
4750         check_ldflags -Wl,--nxcompat,--dynamicbase
4751         # Lets work around some stupidity in binutils.
4752         # ld will strip relocations from executables even though we need them
4753         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4754         # however ld then forgets what the entry point should be (oops) so we
4755         # have to manually (re)set it.
4756         if enabled x86_32; then
4757             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4758         elif enabled x86_64; then
4759             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4760             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4761             # Set image base >4GB for extra entropy with HEASLR
4762             add_ldexeflags -Wl,--image-base,0x140000000
4763             append SHFLAGS -Wl,--image-base,0x180000000
4764         fi
4765         ;;
4766     win32|win64)
4767         disable symver
4768         if enabled shared; then
4769             # Link to the import library instead of the normal static library
4770             # for shared libs.
4771             LD_LIB='%.lib'
4772             # Cannot build both shared and static libs with MSVC or icl.
4773             disable static
4774         fi
4775         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4776         shlibdir_default="$bindir_default"
4777         SLIBPREF=""
4778         SLIBSUF=".dll"
4779         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4780         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4781         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4782         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4783         SLIB_INSTALL_LINKS=
4784         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4785         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4786         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4787         objformat="win32"
4788         ranlib=:
4789         enable dos_paths
4790         ;;
4791     cygwin*)
4792         target_os=cygwin
4793         shlibdir_default="$bindir_default"
4794         SLIBPREF="cyg"
4795         SLIBSUF=".dll"
4796         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4797         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4798         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4799         SLIB_INSTALL_LINKS=
4800         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4801         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4802         objformat="win32"
4803         enable dos_paths
4804         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4805         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4806         ;;
4807     *-dos|freedos|opendos)
4808         network_extralibs="-lsocket"
4809         objformat="coff"
4810         enable dos_paths
4811         add_cppflags -U__STRICT_ANSI__
4812         ;;
4813     linux)
4814         enable dv1394
4815         enable section_data_rel_ro
4816         ;;
4817     irix*)
4818         target_os=irix
4819         ranlib="echo ignoring ranlib"
4820         ;;
4821     os/2*)
4822         strip="lxlite -CS"
4823         objformat="aout"
4824         add_cppflags -D_GNU_SOURCE
4825         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4826         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4827         LIBSUF="_s.a"
4828         SLIBPREF=""
4829         SLIBSUF=".dll"
4830         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4831         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4832         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4833             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4834             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4835             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4836             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4837         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4838             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4839         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4840         SLIB_INSTALL_LINKS=
4841