avcodec/mjpegdec: Fix indention of ljpeg_decode_yuv_scan()
[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-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --enable-avisynth        enable reading of AviSynth script files [no]
204   --disable-bzlib          disable bzlib [autodetect]
205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
206   --enable-frei0r          enable frei0r video filtering [no]
207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
208                            if openssl, librtmp or gmp is not used [no]
209   --enable-gmp             enable gmp, needed for rtmp(t)e support
210                            if openssl or librtmp is not used [no]
211   --enable-gnutls          enable gnutls, needed for https support
212                            if openssl is not used [no]
213   --disable-iconv          disable iconv [autodetect]
214   --enable-jni             enable JNI support [no]
215   --enable-ladspa          enable LADSPA audio filtering [no]
216   --enable-libass          enable libass subtitles rendering,
217                            needed for subtitles and ass filter [no]
218   --enable-libbluray       enable BluRay reading using libbluray [no]
219   --enable-libbs2b         enable bs2b DSP library [no]
220   --enable-libcaca         enable textual display using libcaca [no]
221   --enable-libcelt         enable CELT decoding via libcelt [no]
222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
224                            and libraw1394 [no]
225   --enable-libebur128      enable libebur128 for EBU R128 measurement,
226                            needed for loudnorm filter [no]
227   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
228   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
229   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
230   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
231   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
232   --enable-libgme          enable Game Music Emu via libgme [no]
233   --enable-libgsm          enable GSM de/encoding via libgsm [no]
234   --enable-libiec61883     enable iec61883 via libiec61883 [no]
235   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
236   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
237   --enable-libmodplug      enable ModPlug via libmodplug [no]
238   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
239   --enable-libnut          enable NUT (de)muxing via libnut,
240                            native (de)muxer exists [no]
241   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
242   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
243   --enable-libopencv       enable video filtering via libopencv [no]
244   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
245   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
246   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
247   --enable-libopus         enable Opus de/encoding via libopus [no]
248   --enable-libpulse        enable Pulseaudio input via libpulse [no]
249   --enable-librubberband   enable rubberband needed for rubberband filter [no]
250   --enable-librtmp         enable RTMP[E] support via librtmp [no]
251   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
252   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
253   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
254   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
255   --enable-libsoxr         enable Include libsoxr resampling [no]
256   --enable-libspeex        enable Speex de/encoding via libspeex [no]
257   --enable-libssh          enable SFTP protocol via libssh [no]
258   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
259   --enable-libtheora       enable Theora encoding via libtheora [no]
260   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
261   --enable-libv4l2         enable libv4l2/v4l-utils [no]
262   --enable-libvidstab      enable video stabilization using vid.stab [no]
263   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
264   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
265                            native implementation exists [no]
266   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
267   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
268   --enable-libwebp         enable WebP encoding via libwebp [no]
269   --enable-libx264         enable H.264 encoding via x264 [no]
270   --enable-libx265         enable HEVC encoding via x265 [no]
271   --enable-libxavs         enable AVS encoding via xavs [no]
272   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
273   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
274   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
275   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
276   --enable-libxvid         enable Xvid encoding via xvidcore,
277                            native MPEG-4/Xvid encoder exists [no]
278   --enable-libzimg         enable z.lib, needed for zscale filter [no]
279   --enable-libzmq          enable message passing via libzmq [no]
280   --enable-libzvbi         enable teletext support via libzvbi [no]
281   --disable-lzma           disable lzma [autodetect]
282   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
283   --enable-mediacodec      enable Android MediaCodec support [no]
284   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
285   --enable-openal          enable OpenAL 1.1 capture support [no]
286   --enable-opencl          enable OpenCL code
287   --enable-opengl          enable OpenGL rendering [no]
288   --enable-openssl         enable openssl, needed for https support
289                            if gnutls is not used [no]
290   --disable-schannel       disable SChannel SSP, needed for TLS support on
291                            Windows if openssl and gnutls are not used [autodetect]
292   --disable-sdl2           disable sdl2 [autodetect]
293   --disable-securetransport disable Secure Transport, needed for TLS support
294                            on OSX if openssl and gnutls are not used [autodetect]
295   --enable-x11grab         enable X11 grabbing (legacy) [no]
296   --disable-xlib           disable xlib [autodetect]
297   --disable-zlib           disable zlib [autodetect]
298
299   The following libraries provide various hardware acceleration features:
300   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
301   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
302   --enable-cuvid           enable Nvidia CUVID support [autodetect]
303   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
304   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
305   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
306   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
307   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
308   --disable-nvenc          disable Nvidia video encoding code [autodetect]
309   --enable-omx             enable OpenMAX IL code [no]
310   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
311   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
312   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
313   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
314   --disable-videotoolbox   disable VideoToolbox code [autodetect]
315
316 Toolchain options:
317   --arch=ARCH              select architecture [$arch]
318   --cpu=CPU                select the minimum required CPU (affects
319                            instruction selection, may crash on older CPUs)
320   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
321   --progs-suffix=SUFFIX    program name suffix []
322   --enable-cross-compile   assume a cross-compiler is used
323   --sysroot=PATH           root of cross-build tree
324   --sysinclude=PATH        location of cross-build system headers
325   --target-os=OS           compiler targets OS [$target_os]
326   --target-exec=CMD        command to run executables on target
327   --target-path=DIR        path to view of build directory on target
328   --target-samples=DIR     path to samples directory on target
329   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
330   --toolchain=NAME         set tool defaults according to NAME
331   --nm=NM                  use nm tool NM [$nm_default]
332   --ar=AR                  use archive tool AR [$ar_default]
333   --as=AS                  use assembler AS [$as_default]
334   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
335   --strip=STRIP            use strip tool STRIP [$strip_default]
336   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
337   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
338   --cc=CC                  use C compiler CC [$cc_default]
339   --cxx=CXX                use C compiler CXX [$cxx_default]
340   --objcc=OCC              use ObjC compiler OCC [$cc_default]
341   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
342   --ld=LD                  use linker LD [$ld_default]
343   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
344   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
345   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
346   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
347   --host-cc=HOSTCC         use host C compiler HOSTCC
348   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
349   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
350   --host-ld=HOSTLD         use host linker HOSTLD
351   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
352   --host-libs=HLIBS        use libs HLIBS when linking for host
353   --host-os=OS             compiler host OS [$target_os]
354   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
355   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
356   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
357   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
358   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
359   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
360   --extra-libs=ELIBS       add ELIBS [$ELIBS]
361   --extra-version=STRING   version string suffix []
362   --optflags=OPTFLAGS      override optimization-related compiler flags
363   --build-suffix=SUFFIX    library name suffix []
364   --enable-pic             build position-independent code
365   --enable-thumb           compile for Thumb instruction set
366   --enable-lto             use link-time optimization
367   --env="ENV=override"     override the environment variables
368
369 Advanced options (experts only):
370   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
371   --custom-allocator=NAME  use a supported custom allocator
372   --disable-symver         disable symbol versioning
373   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
374   --disable-safe-bitstream-reader
375                            disable buffer boundary checking in bitreaders
376                            (faster, but may crash)
377   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
378   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
379
380 Optimization options (experts only):
381   --disable-asm            disable all assembly optimizations
382   --disable-altivec        disable AltiVec optimizations
383   --disable-vsx            disable VSX optimizations
384   --disable-power8         disable POWER8 optimizations
385   --disable-amd3dnow       disable 3DNow! optimizations
386   --disable-amd3dnowext    disable 3DNow! extended optimizations
387   --disable-mmx            disable MMX optimizations
388   --disable-mmxext         disable MMXEXT optimizations
389   --disable-sse            disable SSE optimizations
390   --disable-sse2           disable SSE2 optimizations
391   --disable-sse3           disable SSE3 optimizations
392   --disable-ssse3          disable SSSE3 optimizations
393   --disable-sse4           disable SSE4 optimizations
394   --disable-sse42          disable SSE4.2 optimizations
395   --disable-avx            disable AVX optimizations
396   --disable-xop            disable XOP optimizations
397   --disable-fma3           disable FMA3 optimizations
398   --disable-fma4           disable FMA4 optimizations
399   --disable-avx2           disable AVX2 optimizations
400   --disable-aesni          disable AESNI optimizations
401   --disable-armv5te        disable armv5te optimizations
402   --disable-armv6          disable armv6 optimizations
403   --disable-armv6t2        disable armv6t2 optimizations
404   --disable-vfp            disable VFP optimizations
405   --disable-neon           disable NEON optimizations
406   --disable-inline-asm     disable use of inline assembly
407   --disable-yasm           disable use of nasm/yasm assembly
408   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
409   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
410   --disable-msa            disable MSA optimizations
411   --disable-mipsfpu        disable floating point MIPS optimizations
412   --disable-mmi            disable Loongson SIMD optimizations
413   --disable-fast-unaligned consider unaligned accesses slow
414
415 Developer options (useful when working on FFmpeg itself):
416   --disable-debug          disable debugging symbols
417   --enable-debug=LEVEL     set the debug level [$debuglevel]
418   --disable-optimizations  disable compiler optimizations
419   --enable-extra-warnings  enable more compiler warnings
420   --disable-stripping      disable stripping of executables and shared libraries
421   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
422                            2 causes a slowdown at runtime.
423   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
424   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
425                            leaks and errors, using the specified valgrind binary.
426                            Cannot be combined with --target-exec
427   --enable-ftrapv          Trap arithmetic overflows
428   --samples=PATH           location of test samples for FATE, if not set use
429                            \$FATE_SAMPLES at make invocation time.
430   --enable-neon-clobber-test check NEON registers for clobbering (should be
431                            used only for debugging purposes)
432   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
433                            should be used only for debugging purposes)
434   --enable-random          randomly enable/disable components
435   --disable-random
436   --enable-random=LIST     randomly enable/disable specific components or
437   --disable-random=LIST    component groups. LIST is a comma-separated list
438                            of NAME[:PROB] entries where NAME is a component
439                            (group) and PROB the probability associated with
440                            NAME (default 0.5).
441   --random-seed=VALUE      seed value for --enable/disable-random
442   --disable-valgrind-backtrace do not print a backtrace under Valgrind
443                            (only applies to --disable-optimizations builds)
444
445 NOTE: Object files are built at the place where configure is launched.
446 EOF
447   exit 0
448 }
449
450 quotes='""'
451 if test -t 1 && which tput >/dev/null 2>&1; then
452     ncolors=$(tput colors)
453     if test -n "$ncolors" && test $ncolors -ge 8; then
454         bold_color=$(tput bold)
455         warn_color=$(tput setaf 3)
456         error_color=$(tput setaf 1)
457         reset_color=$(tput sgr0)
458     fi
459     # 72 used instead of 80 since that's the default of pr
460     ncols=$(tput cols)
461 fi
462 : ${ncols:=72}
463
464 log(){
465     echo "$@" >> $logfile
466 }
467
468 log_file(){
469     log BEGIN $1
470     pr -n -t $1 >> $logfile
471     log END $1
472 }
473
474 warn(){
475     log "WARNING: $*"
476     WARNINGS="${WARNINGS}WARNING: $*\n"
477 }
478
479 die(){
480     log "$@"
481     echo "$error_color$bold_color$@$reset_color"
482     cat <<EOF
483
484 If you think configure made a mistake, make sure you are using the latest
485 version from Git.  If the latest version fails, report the problem to the
486 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
487 EOF
488     if disabled logging; then
489         cat <<EOF
490 Rerun configure with logging enabled (do not use --disable-logging), and
491 include the log this produces with your report.
492 EOF
493     else
494         cat <<EOF
495 Include the log file "$logfile" produced by configure as this will help
496 solve the problem.
497 EOF
498     fi
499     exit 1
500 }
501
502 # Avoid locale weirdness, besides we really just want to translate ASCII.
503 toupper(){
504     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
505 }
506
507 tolower(){
508     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
509 }
510
511 c_escape(){
512     echo "$*" | sed 's/["\\]/\\\0/g'
513 }
514
515 sh_quote(){
516     v=$(echo "$1" | sed "s/'/'\\\\''/g")
517     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
518     echo "$v"
519 }
520
521 cleanws(){
522     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
523 }
524
525 filter(){
526     pat=$1
527     shift
528     for v; do
529         eval "case $v in $pat) echo $v ;; esac"
530     done
531 }
532
533 filter_out(){
534     pat=$1
535     shift
536     for v; do
537         eval "case $v in $pat) ;; *) echo $v ;; esac"
538     done
539 }
540
541 map(){
542     m=$1
543     shift
544     for v; do eval $m; done
545 }
546
547 add_suffix(){
548     suffix=$1
549     shift
550     for v; do echo ${v}${suffix}; done
551 }
552
553 set_all(){
554     value=$1
555     shift
556     for var in $*; do
557         eval $var=$value
558     done
559 }
560
561 set_weak(){
562     value=$1
563     shift
564     for var; do
565         eval : \${$var:=$value}
566     done
567 }
568
569 sanitize_var_name(){
570     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
571 }
572
573 set_safe(){
574     var=$1
575     shift
576     eval $(sanitize_var_name "$var")='$*'
577 }
578
579 get_safe(){
580     eval echo \$$(sanitize_var_name "$1")
581 }
582
583 pushvar(){
584     for pvar in $*; do
585         eval level=\${${pvar}_level:=0}
586         eval ${pvar}_${level}="\$$pvar"
587         eval ${pvar}_level=$(($level+1))
588     done
589 }
590
591 popvar(){
592     for pvar in $*; do
593         eval level=\${${pvar}_level:-0}
594         test $level = 0 && continue
595         eval level=$(($level-1))
596         eval $pvar="\${${pvar}_${level}}"
597         eval ${pvar}_level=$level
598         eval unset ${pvar}_${level}
599     done
600 }
601
602 enable(){
603     set_all yes $*
604 }
605
606 disable(){
607     set_all no $*
608 }
609
610 enable_weak(){
611     set_weak yes $*
612 }
613
614 disable_weak(){
615     set_weak no $*
616 }
617
618 enable_safe(){
619     for var; do
620         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
621     done
622 }
623
624 disable_safe(){
625     for var; do
626         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
627     done
628 }
629
630 do_enable_deep(){
631     for var; do
632         enabled $var && continue
633         eval sel="\$${var}_select"
634         eval sgs="\$${var}_suggest"
635         pushvar var sgs
636         enable_deep $sel
637         popvar sgs
638         enable_deep_weak $sgs
639         popvar var
640     done
641 }
642
643 enable_deep(){
644     do_enable_deep $*
645     enable $*
646 }
647
648 enable_deep_weak(){
649     for var; do
650         disabled $var && continue
651         pushvar var
652         do_enable_deep $var
653         popvar var
654         enable_weak $var
655     done
656 }
657
658 enabled(){
659     test "${1#!}" = "$1" && op='=' || op=!=
660     eval test "x\$${1#!}" $op "xyes"
661 }
662
663 disabled(){
664     test "${1#!}" = "$1" && op='=' || op=!=
665     eval test "x\$${1#!}" $op "xno"
666 }
667
668 enabled_all(){
669     for opt; do
670         enabled $opt || return 1
671     done
672 }
673
674 disabled_all(){
675     for opt; do
676         disabled $opt || return 1
677     done
678 }
679
680 enabled_any(){
681     for opt; do
682         enabled $opt && return 0
683     done
684 }
685
686 disabled_any(){
687     for opt; do
688         disabled $opt && return 0
689     done
690     return 1
691 }
692
693 set_default(){
694     for opt; do
695         eval : \${$opt:=\$${opt}_default}
696     done
697 }
698
699 is_in(){
700     value=$1
701     shift
702     for var in $*; do
703         [ $var = $value ] && return 0
704     done
705     return 1
706 }
707
708 do_check_deps(){
709     for cfg; do
710         cfg="${cfg#!}"
711         enabled ${cfg}_checking && die "Circular dependency for $cfg."
712         disabled ${cfg}_checking && continue
713         enable ${cfg}_checking
714         append allopts $cfg
715
716         eval dep_all="\$${cfg}_deps"
717         eval dep_any="\$${cfg}_deps_any"
718         eval dep_sel="\$${cfg}_select"
719         eval dep_sgs="\$${cfg}_suggest"
720         eval dep_ifa="\$${cfg}_if"
721         eval dep_ifn="\$${cfg}_if_any"
722
723         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
724         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
725         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
726
727         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
728         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
729         enabled_all  $dep_all || disable $cfg
730         enabled_any  $dep_any || disable $cfg
731         disabled_any $dep_sel && disable $cfg
732
733         if enabled $cfg; then
734             enable_deep $dep_sel
735             enable_deep_weak $dep_sgs
736         fi
737
738         disable ${cfg}_checking
739     done
740 }
741
742 check_deps(){
743     unset allopts
744
745     do_check_deps "$@"
746
747     for cfg in $allopts; do
748         enabled $cfg || continue
749         eval dep_extralibs="\$${cfg}_extralibs"
750         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
751     done
752 }
753
754 print_config(){
755     pfx=$1
756     files=$2
757     shift 2
758     map 'eval echo "$v \${$v:-no}"' "$@" |
759     awk "BEGIN { split(\"$files\", files) }
760         {
761             c = \"$pfx\" toupper(\$1);
762             v = \$2;
763             sub(/yes/, 1, v);
764             sub(/no/,  0, v);
765             for (f in files) {
766                 file = files[f];
767                 if (file ~ /\\.h\$/) {
768                     printf(\"#define %s %d\\n\", c, v) >>file;
769                 } else if (file ~ /\\.asm\$/) {
770                     printf(\"%%define %s %d\\n\", c, v) >>file;
771                 } else if (file ~ /\\.mak\$/) {
772                     n = -v ? \"\" : \"!\";
773                     printf(\"%s%s=yes\\n\", n, c) >>file;
774                 } else if (file ~ /\\.texi\$/) {
775                     pre = -v ? \"\" : \"@c \";
776                     yesno = \$2;
777                     c2 = tolower(c);
778                     gsub(/_/, \"-\", c2);
779                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
780                 }
781             }
782         }"
783 }
784
785 print_enabled(){
786     suf=$1
787     shift
788     for v; do
789         enabled $v && printf "%s\n" ${v%$suf}
790     done
791 }
792
793 append(){
794     var=$1
795     shift
796     eval "$var=\"\$$var $*\""
797 }
798
799 prepend(){
800     var=$1
801     shift
802     eval "$var=\"$* \$$var\""
803 }
804
805 unique(){
806     var=$1
807     uniq_list=""
808     for tok in $(eval echo \$$var); do
809         uniq_list="$(filter_out $tok $uniq_list) $tok"
810     done
811     eval "$var=\"${uniq_list}\""
812 }
813
814 add_cppflags(){
815     append CPPFLAGS "$@"
816 }
817
818 add_cflags(){
819     append CFLAGS $($cflags_filter "$@")
820 }
821
822 add_cxxflags(){
823     append CXXFLAGS $($cflags_filter "$@")
824 }
825
826 add_asflags(){
827     append ASFLAGS $($asflags_filter "$@")
828 }
829
830 add_objcflags(){
831     append OBJCFLAGS $($objcflags_filter "$@")
832 }
833
834 add_ldflags(){
835     append LDFLAGS $($ldflags_filter "$@")
836 }
837
838 add_ldexeflags(){
839     append LDEXEFLAGS $($ldflags_filter "$@")
840 }
841
842 add_ldlibflags(){
843     append LDLIBFLAGS $($ldflags_filter "$@")
844 }
845
846 add_stripflags(){
847     append ASMSTRIPFLAGS "$@"
848 }
849
850 add_extralibs(){
851     prepend extralibs $($ldflags_filter "$@")
852 }
853
854 add_host_cppflags(){
855     append host_cppflags "$@"
856 }
857
858 add_host_cflags(){
859     append host_cflags $($host_cflags_filter "$@")
860 }
861
862 add_host_ldflags(){
863     append host_ldflags $($host_ldflags_filter "$@")
864 }
865
866 add_compat(){
867     append compat_objs $1
868     shift
869     map 'add_cppflags -D$v' "$@"
870 }
871
872 check_cmd(){
873     log "$@"
874     "$@" >> $logfile 2>&1
875 }
876
877 check_stat(){
878     log check_stat "$@"
879     stat "$1" >> $logfile 2>&1
880 }
881
882 cc_o(){
883     eval printf '%s\\n' $CC_O
884 }
885
886 cc_e(){
887     eval printf '%s\\n' $CC_E
888 }
889
890 check_cc(){
891     log check_cc "$@"
892     cat > $TMPC
893     log_file $TMPC
894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
895 }
896
897 check_cxx(){
898     log check_cxx "$@"
899     cat > $TMPCPP
900     log_file $TMPCPP
901     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
902 }
903
904 check_objcc(){
905     log check_objcc "$@"
906     cat > $TMPM
907     log_file $TMPM
908     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
909 }
910
911 check_cpp(){
912     log check_cpp "$@"
913     cat > $TMPC
914     log_file $TMPC
915     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
916 }
917
918 as_o(){
919     eval printf '%s\\n' $AS_O
920 }
921
922 check_as(){
923     log check_as "$@"
924     cat > $TMPS
925     log_file $TMPS
926     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
927 }
928
929 check_inline_asm(){
930     log check_inline_asm "$@"
931     name="$1"
932     code="$2"
933     shift 2
934     disable $name
935     check_cc "$@" <<EOF && enable $name
936 void foo(void){ __asm__ volatile($code); }
937 EOF
938 }
939
940 check_inline_asm_flags(){
941     log check_inline_asm_flags "$@"
942     name="$1"
943     code="$2"
944     flags=''
945     shift 2
946     while [ "$1" != "" ]; do
947       append flags $1
948       shift
949     done;
950     disable $name
951     cat > $TMPC <<EOF
952 void foo(void){ __asm__ volatile($code); }
953 EOF
954     log_file $TMPC
955     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
956     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
957 }
958
959 check_insn(){
960     log check_insn "$@"
961     check_inline_asm ${1}_inline "\"$2\""
962     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
963 }
964
965 check_yasm(){
966     log check_yasm "$@"
967     echo "$1" > $TMPS
968     log_file $TMPS
969     shift 1
970     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
971 }
972
973 ld_o(){
974     eval printf '%s\\n' $LD_O
975 }
976
977 check_ld(){
978     log check_ld "$@"
979     type=$1
980     shift 1
981     flags=$(filter_out '-l*|*.so' $@)
982     libs=$(filter '-l*|*.so' $@)
983     check_$type $($cflags_filter $flags) || return
984     flags=$($ldflags_filter $flags)
985     libs=$($ldflags_filter $libs)
986     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
987 }
988
989 print_include(){
990     hdr=$1
991     test "${hdr%.h}" = "${hdr}" &&
992         echo "#include $hdr"    ||
993         echo "#include <$hdr>"
994 }
995
996 check_code(){
997     log check_code "$@"
998     check=$1
999     headers=$2
1000     code=$3
1001     shift 3
1002     {
1003         for hdr in $headers; do
1004             print_include $hdr
1005         done
1006         echo "int main(void) { $code; return 0; }"
1007     } | check_$check "$@"
1008 }
1009
1010 check_cppflags(){
1011     log check_cppflags "$@"
1012     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1013 int x;
1014 EOF
1015 }
1016
1017 test_cflags(){
1018     log test_cflags "$@"
1019     set -- $($cflags_filter "$@")
1020     check_cc "$@" <<EOF
1021 int x;
1022 EOF
1023 }
1024
1025 check_cflags(){
1026     log check_cflags "$@"
1027     test_cflags "$@" && add_cflags "$@"
1028 }
1029
1030 check_cxxflags(){
1031     log check_cxxflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1034 int x;
1035 EOF
1036 }
1037
1038 test_objcflags(){
1039     log test_cflags "$@"
1040     set -- $($cflags_filter "$@")
1041     check_objcc "$@" <<EOF
1042 int x;
1043 EOF
1044 }
1045
1046 check_objcflags(){
1047     log check_cflags "$@"
1048     test_objcflags "$@" && add_objcflags "$@"
1049 }
1050
1051 test_ldflags(){
1052     log test_ldflags "$@"
1053     check_ld "cc" "$@" <<EOF
1054 int main(void){ return 0; }
1055 EOF
1056 }
1057
1058 check_ldflags(){
1059     log check_ldflags "$@"
1060     test_ldflags "$@" && add_ldflags "$@"
1061 }
1062
1063 test_stripflags(){
1064     log test_stripflags "$@"
1065     # call check_cc to get a fresh TMPO
1066     check_cc <<EOF
1067 int main(void) { return 0; }
1068 EOF
1069     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1070 }
1071
1072 check_stripflags(){
1073     log check_stripflags "$@"
1074     test_stripflags "$@" && add_stripflags "$@"
1075 }
1076
1077 check_header(){
1078     log check_header "$@"
1079     header=$1
1080     shift
1081     disable_safe $header
1082     check_cpp "$@" <<EOF && enable_safe $header
1083 #include <$header>
1084 int x;
1085 EOF
1086 }
1087
1088 check_header_objcc(){
1089     log check_header_objcc "$@"
1090     rm -f -- "$TMPO"
1091     header=$1
1092     shift
1093     disable_safe $header
1094     {
1095        echo "#include <$header>"
1096        echo "int main(void) { return 0; }"
1097     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1098 }
1099
1100 check_func(){
1101     log check_func "$@"
1102     func=$1
1103     shift
1104     disable $func
1105     check_ld "cc" "$@" <<EOF && enable $func
1106 extern int $func();
1107 int main(void){ $func(); }
1108 EOF
1109 }
1110
1111 check_complexfunc(){
1112     log check_complexfunc "$@"
1113     func=$1
1114     narg=$2
1115     shift 2
1116     test $narg = 2 && args="f, g" || args="f * I"
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 #include <complex.h>
1120 #include <math.h>
1121 float foo(complex float f, complex float g) { return $func($args); }
1122 int main(void){ return (int) foo; }
1123 EOF
1124 }
1125
1126 check_mathfunc(){
1127     log check_mathfunc "$@"
1128     func=$1
1129     narg=$2
1130     shift 2
1131     test $narg = 2 && args="f, g" || args="f"
1132     disable $func
1133     check_ld "cc" "$@" <<EOF && enable $func
1134 #include <math.h>
1135 float foo(float f, float g) { return $func($args); }
1136 int main(void){ return (int) foo; }
1137 EOF
1138 }
1139
1140 check_func_headers(){
1141     log check_func_headers "$@"
1142     headers=$1
1143     funcs=$2
1144     shift 2
1145     {
1146         for hdr in $headers; do
1147             print_include $hdr
1148         done
1149         echo "#include <stdint.h>"
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { int ret = 0;"
1154         # LTO could optimize out the test functions without this
1155         for func in $funcs; do
1156             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1157         done
1158         echo "return ret; }"
1159     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1160 }
1161
1162 check_class_headers_cpp(){
1163     log check_class_headers_cpp "$@"
1164     headers=$1
1165     classes=$2
1166     shift 2
1167     {
1168         for hdr in $headers; do
1169             echo "#include <$hdr>"
1170         done
1171         echo "int main(void) { "
1172         i=1
1173         for class in $classes; do
1174             echo "$class obj$i;"
1175             i=$(expr $i + 1)
1176         done
1177         echo "return 0; }"
1178     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1179 }
1180
1181 check_cpp_condition(){
1182     log check_cpp_condition "$@"
1183     header=$1
1184     condition=$2
1185     shift 2
1186     check_cpp "$@" <<EOF
1187 #include <$header>
1188 #if !($condition)
1189 #error "unsatisfied condition: $condition"
1190 #endif
1191 EOF
1192 }
1193
1194 check_lib(){
1195     log check_lib "$@"
1196     header="$1"
1197     func="$2"
1198     shift 2
1199     check_header $header && check_func $func "$@" && add_extralibs "$@"
1200 }
1201
1202 check_lib2(){
1203     log check_lib2 "$@"
1204     headers="$1"
1205     funcs="$2"
1206     shift 2
1207     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1208 }
1209
1210 check_lib_cpp(){
1211     log check_lib_cpp "$@"
1212     headers="$1"
1213     classes="$2"
1214     shift 2
1215     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1216 }
1217
1218 check_pkg_config(){
1219     log check_pkg_config "$@"
1220     pkgandversion="$1"
1221     pkg="${1%% *}"
1222     headers="$2"
1223     funcs="$3"
1224     shift 3
1225     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1226     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1227     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1228     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1229         set_safe "${pkg}_cflags" $pkg_cflags   &&
1230         set_safe "${pkg}_libs"   $pkg_libs
1231 }
1232
1233 check_exec(){
1234     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1235 }
1236
1237 check_exec_crash(){
1238     code=$(cat)
1239
1240     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1241     # are safe but may not be available everywhere.  Thus we use
1242     # raise(SIGTERM) instead.  The check is run in a subshell so we
1243     # can redirect the "Terminated" message from the shell.  SIGBUS
1244     # is not defined by standard C so it is used conditionally.
1245
1246     (check_exec "$@") >> $logfile 2>&1 <<EOF
1247 #include <signal.h>
1248 static void sighandler(int sig){
1249     raise(SIGTERM);
1250 }
1251 int foo(void){
1252     $code
1253 }
1254 int (*func_ptr)(void) = foo;
1255 int main(void){
1256     signal(SIGILL, sighandler);
1257     signal(SIGFPE, sighandler);
1258     signal(SIGSEGV, sighandler);
1259 #ifdef SIGBUS
1260     signal(SIGBUS, sighandler);
1261 #endif
1262     return func_ptr();
1263 }
1264 EOF
1265 }
1266
1267 check_type(){
1268     log check_type "$@"
1269     headers=$1
1270     type=$2
1271     shift 2
1272     disable_safe "$type"
1273     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1274 }
1275
1276 check_struct(){
1277     log check_struct "$@"
1278     headers=$1
1279     struct=$2
1280     member=$3
1281     shift 3
1282     disable_safe "${struct}_${member}"
1283     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1284         enable_safe "${struct}_${member}"
1285 }
1286
1287 check_builtin(){
1288     log check_builtin "$@"
1289     name=$1
1290     headers=$2
1291     builtin=$3
1292     shift 3
1293     disable "$name"
1294     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1295 }
1296
1297 check_compile_assert(){
1298     log check_compile_assert "$@"
1299     name=$1
1300     headers=$2
1301     condition=$3
1302     shift 3
1303     disable "$name"
1304     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1305 }
1306
1307 require(){
1308     name="$1"
1309     header="$2"
1310     func="$3"
1311     shift 3
1312     check_lib $header $func "$@" || die "ERROR: $name not found"
1313 }
1314
1315 require2(){
1316     name="$1"
1317     headers="$2"
1318     func="$3"
1319     shift 3
1320     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1321 }
1322
1323 require_cpp(){
1324     name="$1"
1325     headers="$2"
1326     classes="$3"
1327     shift 3
1328     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1329 }
1330
1331 use_pkg_config(){
1332     pkg="$1"
1333     check_pkg_config "$@" || return 1
1334     add_cflags    $(get_safe "${pkg}_cflags")
1335     add_extralibs $(get_safe "${pkg}_libs")
1336 }
1337
1338 require_pkg_config(){
1339     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1340 }
1341
1342 require_libfreetype(){
1343     log require_libfreetype "$@"
1344     pkg="freetype2"
1345     check_cmd $pkg_config --exists --print-errors $pkg \
1346       || die "ERROR: $pkg not found"
1347     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1348     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1349     {
1350         echo "#include <ft2build.h>"
1351         echo "#include FT_FREETYPE_H"
1352         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1353         echo "int main(void) { return 0; }"
1354     } | check_ld "cc" $pkg_cflags $pkg_libs \
1355       && set_safe "${pkg}_cflags" $pkg_cflags \
1356       && set_safe "${pkg}_libs"   $pkg_libs \
1357       || die "ERROR: $pkg not found"
1358     add_cflags    $(get_safe "${pkg}_cflags")
1359     add_extralibs $(get_safe "${pkg}_libs")
1360 }
1361
1362 hostcc_e(){
1363     eval printf '%s\\n' $HOSTCC_E
1364 }
1365
1366 hostcc_o(){
1367     eval printf '%s\\n' $HOSTCC_O
1368 }
1369
1370 check_host_cc(){
1371     log check_host_cc "$@"
1372     cat > $TMPC
1373     log_file $TMPC
1374     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1375 }
1376
1377 check_host_cpp(){
1378     log check_host_cpp "$@"
1379     cat > $TMPC
1380     log_file $TMPC
1381     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1382 }
1383
1384 check_host_cppflags(){
1385     log check_host_cppflags "$@"
1386     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1387 int x;
1388 EOF
1389 }
1390
1391 check_host_cflags(){
1392     log check_host_cflags "$@"
1393     set -- $($host_cflags_filter "$@")
1394     check_host_cc "$@" <<EOF && append host_cflags "$@"
1395 int x;
1396 EOF
1397 }
1398
1399 check_host_cpp_condition(){
1400     log check_host_cpp_condition "$@"
1401     header=$1
1402     condition=$2
1403     shift 2
1404     check_host_cpp "$@" <<EOF
1405 #include <$header>
1406 #if !($condition)
1407 #error "unsatisfied condition: $condition"
1408 #endif
1409 EOF
1410 }
1411
1412 cp_if_changed(){
1413     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1414     mkdir -p "$(dirname $2)"
1415     $cp_f "$1" "$2"
1416 }
1417
1418 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1419 # system-dependent things.
1420
1421 AVCODEC_COMPONENTS="
1422     bsfs
1423     decoders
1424     encoders
1425     hwaccels
1426     parsers
1427 "
1428
1429 AVDEVICE_COMPONENTS="
1430     indevs
1431     outdevs
1432 "
1433 AVFILTER_COMPONENTS="
1434     filters
1435 "
1436 AVFORMAT_COMPONENTS="
1437     demuxers
1438     muxers
1439     protocols
1440 "
1441
1442 AVRESAMPLE_COMPONENTS=""
1443 AVUTIL_COMPONENTS=""
1444
1445 COMPONENT_LIST="
1446     $AVCODEC_COMPONENTS
1447     $AVDEVICE_COMPONENTS
1448     $AVFILTER_COMPONENTS
1449     $AVFORMAT_COMPONENTS
1450     $AVRESAMPLE_COMPONENTS
1451     $AVUTIL_COMPONENTS
1452 "
1453
1454 EXAMPLE_LIST="
1455     avio_dir_cmd_example
1456     avio_reading_example
1457     decoding_encoding_example
1458     demuxing_decoding_example
1459     extract_mvs_example
1460     filter_audio_example
1461     filtering_audio_example
1462     filtering_video_example
1463     http_multiclient_example
1464     metadata_example
1465     muxing_example
1466     qsvdec_example
1467     remuxing_example
1468     resampling_audio_example
1469     scaling_video_example
1470     transcode_aac_example
1471     transcoding_example
1472 "
1473
1474 EXTERNAL_LIBRARY_LIST="
1475     avisynth
1476     bzlib
1477     chromaprint
1478     crystalhd
1479     decklink
1480     frei0r
1481     gcrypt
1482     gmp
1483     gnutls
1484     iconv
1485     jni
1486     ladspa
1487     libass
1488     libbluray
1489     libbs2b
1490     libcaca
1491     libcdio
1492     libcelt
1493     libdc1394
1494     libebur128
1495     libfdk_aac
1496     libflite
1497     libfontconfig
1498     libfreetype
1499     libfribidi
1500     libgme
1501     libgsm
1502     libiec61883
1503     libilbc
1504     libkvazaar
1505     libmodplug
1506     libmp3lame
1507     libnut
1508     libopencore_amrnb
1509     libopencore_amrwb
1510     libopencv
1511     libopenh264
1512     libopenjpeg
1513     libopenmpt
1514     libopus
1515     libpulse
1516     librtmp
1517     librubberband
1518     libschroedinger
1519     libshine
1520     libsmbclient
1521     libsnappy
1522     libsoxr
1523     libspeex
1524     libssh
1525     libtesseract
1526     libtheora
1527     libtwolame
1528     libv4l2
1529     libvidstab
1530     libvo_amrwbenc
1531     libvorbis
1532     libvpx
1533     libwavpack
1534     libwebp
1535     libx264
1536     libx265
1537     libxavs
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     libxvid
1543     libzimg
1544     libzmq
1545     libzvbi
1546     lzma
1547     mediacodec
1548     netcdf
1549     openal
1550     opencl
1551     opengl
1552     openssl
1553     schannel
1554     sdl
1555     sdl2
1556     securetransport
1557     videotoolbox
1558     x11grab
1559     xlib
1560     zlib
1561 "
1562
1563 HWACCEL_LIBRARY_LIST="
1564     audiotoolbox
1565     cuda
1566     cuvid
1567     d3d11va
1568     dxva2
1569     libmfx
1570     libnpp
1571     mmal
1572     nvenc
1573     omx
1574     vaapi
1575     vda
1576     vdpau
1577     videotoolbox_hwaccel
1578     xvmc
1579 "
1580
1581 DOCUMENT_LIST="
1582     doc
1583     htmlpages
1584     manpages
1585     podpages
1586     txtpages
1587 "
1588
1589 FEATURE_LIST="
1590     ftrapv
1591     gray
1592     hardcoded_tables
1593     omx_rpi
1594     runtime_cpudetect
1595     safe_bitstream_reader
1596     shared
1597     small
1598     static
1599     swscale_alpha
1600 "
1601
1602 LIBRARY_LIST="
1603     avcodec
1604     avdevice
1605     avfilter
1606     avformat
1607     avresample
1608     avutil
1609     postproc
1610     swresample
1611     swscale
1612 "
1613
1614 LICENSE_LIST="
1615     gpl
1616     nonfree
1617     version3
1618 "
1619
1620 PROGRAM_LIST="
1621     ffplay
1622     ffprobe
1623     ffserver
1624     ffmpeg
1625 "
1626
1627 SUBSYSTEM_LIST="
1628     dct
1629     dwt
1630     error_resilience
1631     faan
1632     fast_unaligned
1633     fft
1634     lsp
1635     lzo
1636     mdct
1637     pixelutils
1638     network
1639     rdft
1640 "
1641
1642 CONFIG_LIST="
1643     $COMPONENT_LIST
1644     $DOCUMENT_LIST
1645     $EXAMPLE_LIST
1646     $EXTERNAL_LIBRARY_LIST
1647     $HWACCEL_LIBRARY_LIST
1648     $FEATURE_LIST
1649     $LICENSE_LIST
1650     $LIBRARY_LIST
1651     $PROGRAM_LIST
1652     $SUBSYSTEM_LIST
1653     fontconfig
1654     memalign_hack
1655     memory_poisoning
1656     neon_clobber_test
1657     pic
1658     pod2man
1659     raise_major
1660     thumb
1661     valgrind_backtrace
1662     xmm_clobber_test
1663 "
1664
1665 THREADS_LIST="
1666     pthreads
1667     os2threads
1668     w32threads
1669 "
1670
1671 ATOMICS_LIST="
1672     atomics_gcc
1673     atomics_suncc
1674     atomics_win32
1675 "
1676
1677 ARCH_LIST="
1678     aarch64
1679     alpha
1680     arm
1681     avr32
1682     avr32_ap
1683     avr32_uc
1684     bfin
1685     ia64
1686     m68k
1687     mips
1688     mips64
1689     parisc
1690     ppc
1691     ppc64
1692     s390
1693     sh4
1694     sparc
1695     sparc64
1696     tilegx
1697     tilepro
1698     tomi
1699     x86
1700     x86_32
1701     x86_64
1702 "
1703
1704 ARCH_EXT_LIST_ARM="
1705     armv5te
1706     armv6
1707     armv6t2
1708     armv8
1709     neon
1710     vfp
1711     vfpv3
1712     setend
1713 "
1714
1715 ARCH_EXT_LIST_MIPS="
1716     mipsfpu
1717     mips32r2
1718     mips32r5
1719     mips64r2
1720     mips32r6
1721     mips64r6
1722     mipsdsp
1723     mipsdspr2
1724     msa
1725 "
1726
1727 ARCH_EXT_LIST_LOONGSON="
1728     loongson2
1729     loongson3
1730     mmi
1731 "
1732
1733 ARCH_EXT_LIST_X86_SIMD="
1734     aesni
1735     amd3dnow
1736     amd3dnowext
1737     avx
1738     avx2
1739     fma3
1740     fma4
1741     mmx
1742     mmxext
1743     sse
1744     sse2
1745     sse3
1746     sse4
1747     sse42
1748     ssse3
1749     xop
1750 "
1751
1752 ARCH_EXT_LIST_PPC="
1753     altivec
1754     dcbzl
1755     ldbrx
1756     power8
1757     ppc4xx
1758     vsx
1759 "
1760
1761 ARCH_EXT_LIST_X86="
1762     $ARCH_EXT_LIST_X86_SIMD
1763     cpunop
1764     i686
1765 "
1766
1767 ARCH_EXT_LIST="
1768     $ARCH_EXT_LIST_ARM
1769     $ARCH_EXT_LIST_PPC
1770     $ARCH_EXT_LIST_X86
1771     $ARCH_EXT_LIST_MIPS
1772     $ARCH_EXT_LIST_LOONGSON
1773 "
1774
1775 ARCH_FEATURES="
1776     aligned_stack
1777     fast_64bit
1778     fast_clz
1779     fast_cmov
1780     local_aligned_8
1781     local_aligned_16
1782     local_aligned_32
1783     simd_align_16
1784 "
1785
1786 BUILTIN_LIST="
1787     atomic_cas_ptr
1788     atomic_compare_exchange
1789     machine_rw_barrier
1790     MemoryBarrier
1791     mm_empty
1792     rdtsc
1793     sarestart
1794     sem_timedwait
1795     sync_val_compare_and_swap
1796 "
1797 HAVE_LIST_CMDLINE="
1798     inline_asm
1799     symver
1800     yasm
1801 "
1802
1803 HAVE_LIST_PUB="
1804     bigendian
1805     fast_unaligned
1806 "
1807
1808 HEADERS_LIST="
1809     alsa_asoundlib_h
1810     altivec_h
1811     arpa_inet_h
1812     asm_types_h
1813     cdio_paranoia_h
1814     cdio_paranoia_paranoia_h
1815     dispatch_dispatch_h
1816     dev_bktr_ioctl_bt848_h
1817     dev_bktr_ioctl_meteor_h
1818     dev_ic_bt8xx_h
1819     dev_video_bktr_ioctl_bt848_h
1820     dev_video_meteor_ioctl_meteor_h
1821     direct_h
1822     dirent_h
1823     dlfcn_h
1824     d3d11_h
1825     dxva_h
1826     ES2_gl_h
1827     gsm_h
1828     io_h
1829     mach_mach_time_h
1830     machine_ioctl_bt848_h
1831     machine_ioctl_meteor_h
1832     malloc_h
1833     opencv2_core_core_c_h
1834     openjpeg_2_1_openjpeg_h
1835     openjpeg_2_0_openjpeg_h
1836     openjpeg_1_5_openjpeg_h
1837     OpenGL_gl3_h
1838     poll_h
1839     sndio_h
1840     soundcard_h
1841     sys_mman_h
1842     sys_param_h
1843     sys_resource_h
1844     sys_select_h
1845     sys_soundcard_h
1846     sys_time_h
1847     sys_un_h
1848     sys_videoio_h
1849     termios_h
1850     udplite_h
1851     unistd_h
1852     valgrind_valgrind_h
1853     windows_h
1854     winsock2_h
1855 "
1856
1857 INTRINSICS_LIST="
1858     intrinsics_neon
1859 "
1860
1861 COMPLEX_FUNCS="
1862     cabs
1863     cexp
1864 "
1865
1866 MATH_FUNCS="
1867     atanf
1868     atan2f
1869     cbrt
1870     cbrtf
1871     copysign
1872     cosf
1873     erf
1874     exp2
1875     exp2f
1876     expf
1877     hypot
1878     isfinite
1879     isinf
1880     isnan
1881     ldexpf
1882     llrint
1883     llrintf
1884     log2
1885     log2f
1886     log10f
1887     lrint
1888     lrintf
1889     powf
1890     rint
1891     round
1892     roundf
1893     sinf
1894     trunc
1895     truncf
1896 "
1897
1898 SYSTEM_FUNCS="
1899     access
1900     aligned_malloc
1901     arc4random
1902     clock_gettime
1903     closesocket
1904     CommandLineToArgvW
1905     CoTaskMemFree
1906     CryptGenRandom
1907     dlopen
1908     fcntl
1909     flt_lim
1910     fork
1911     getaddrinfo
1912     gethrtime
1913     getopt
1914     GetProcessAffinityMask
1915     GetProcessMemoryInfo
1916     GetProcessTimes
1917     getrusage
1918     GetSystemTimeAsFileTime
1919     gettimeofday
1920     glob
1921     glXGetProcAddress
1922     gmtime_r
1923     inet_aton
1924     isatty
1925     jack_port_get_latency_range
1926     kbhit
1927     LoadLibrary
1928     localtime_r
1929     lstat
1930     lzo1x_999_compress
1931     mach_absolute_time
1932     MapViewOfFile
1933     memalign
1934     mkstemp
1935     mmap
1936     mprotect
1937     nanosleep
1938     PeekNamedPipe
1939     posix_memalign
1940     pthread_cancel
1941     sched_getaffinity
1942     SetConsoleTextAttribute
1943     SetConsoleCtrlHandler
1944     setmode
1945     setrlimit
1946     Sleep
1947     strerror_r
1948     sysconf
1949     sysctl
1950     usleep
1951     UTGetOSTypeFromString
1952     VirtualAlloc
1953     wglGetProcAddress
1954 "
1955
1956 TOOLCHAIN_FEATURES="
1957     as_dn_directive
1958     as_func
1959     as_object_arch
1960     asm_mod_q
1961     attribute_may_alias
1962     attribute_packed
1963     ebp_available
1964     ebx_available
1965     gnu_as
1966     gnu_windres
1967     ibm_asm
1968     inline_asm_direct_symbol_refs
1969     inline_asm_labels
1970     inline_asm_nonlocal_labels
1971     pragma_deprecated
1972     rsync_contimeout
1973     symver_asm_label
1974     symver_gnu_asm
1975     vfp_args
1976     xform_asm
1977     xmm_clobbers
1978 "
1979
1980 TYPES_LIST="
1981     CONDITION_VARIABLE_Ptr
1982     socklen_t
1983     struct_addrinfo
1984     struct_group_source_req
1985     struct_ip_mreq_source
1986     struct_ipv6_mreq
1987     struct_msghdr_msg_flags
1988     struct_pollfd
1989     struct_rusage_ru_maxrss
1990     struct_sctp_event_subscribe
1991     struct_sockaddr_in6
1992     struct_sockaddr_sa_len
1993     struct_sockaddr_storage
1994     struct_stat_st_mtim_tv_nsec
1995     struct_v4l2_frmivalenum_discrete
1996 "
1997
1998 HAVE_LIST="
1999     $ARCH_EXT_LIST
2000     $(add_suffix _external $ARCH_EXT_LIST)
2001     $(add_suffix _inline   $ARCH_EXT_LIST)
2002     $ARCH_FEATURES
2003     $ATOMICS_LIST
2004     $BUILTIN_LIST
2005     $COMPLEX_FUNCS
2006     $HAVE_LIST_CMDLINE
2007     $HAVE_LIST_PUB
2008     $HEADERS_LIST
2009     $INTRINSICS_LIST
2010     $MATH_FUNCS
2011     $SYSTEM_FUNCS
2012     $THREADS_LIST
2013     $TOOLCHAIN_FEATURES
2014     $TYPES_LIST
2015     atomics_native
2016     dos_paths
2017     dxva2_lib
2018     dxva2api_cobj
2019     libc_msvcrt
2020     libdc1394_1
2021     libdc1394_2
2022     makeinfo
2023     makeinfo_html
2024     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2025     perl
2026     pod2man
2027     sdl2
2028     section_data_rel_ro
2029     texi2html
2030     threads
2031     vaapi_drm
2032     vaapi_x11
2033     vdpau_x11
2034     winrt
2035     xlib
2036 "
2037
2038 # options emitted with CONFIG_ prefix but not available on the command line
2039 CONFIG_EXTRA="
2040     aandcttables
2041     ac3dsp
2042     audio_frame_queue
2043     audiodsp
2044     blockdsp
2045     bswapdsp
2046     cabac
2047     dirac_parse
2048     dvprofile
2049     exif
2050     faandct
2051     faanidct
2052     fdctdsp
2053     flacdsp
2054     fmtconvert
2055     frame_thread_encoder
2056     g722dsp
2057     golomb
2058     gplv3
2059     h263dsp
2060     h264chroma
2061     h264dsp
2062     h264pred
2063     h264qpel
2064     hpeldsp
2065     huffman
2066     huffyuvdsp
2067     huffyuvencdsp
2068     idctdsp
2069     iirfilter
2070     imdct15
2071     intrax8
2072     iso_media
2073     ividsp
2074     jpegtables
2075     lgplv3
2076     libx262
2077     llauddsp
2078     llviddsp
2079     lpc
2080     lzf
2081     me_cmp
2082     mpeg_er
2083     mpegaudio
2084     mpegaudiodsp
2085     mpegvideo
2086     mpegvideoenc
2087     mss34dsp
2088     pixblockdsp
2089     qpeldsp
2090     qsv
2091     qsvdec
2092     qsvenc
2093     rangecoder
2094     riffdec
2095     riffenc
2096     rtpdec
2097     rtpenc_chain
2098     rv34dsp
2099     sinewin
2100     snappy
2101     srtp
2102     startcode
2103     texturedsp
2104     texturedspenc
2105     tpeldsp
2106     vaapi_encode
2107     vc1dsp
2108     videodsp
2109     vp3dsp
2110     vp56dsp
2111     vp8dsp
2112     vt_bt2020
2113     wma_freqs
2114     wmv2dsp
2115 "
2116
2117 CMDLINE_SELECT="
2118     $ARCH_EXT_LIST
2119     $CONFIG_LIST
2120     $HAVE_LIST_CMDLINE
2121     $THREADS_LIST
2122     asm
2123     cross_compile
2124     debug
2125     extra_warnings
2126     logging
2127     lto
2128     optimizations
2129     rpath
2130     stripping
2131 "
2132
2133 PATHS_LIST="
2134     bindir
2135     datadir
2136     docdir
2137     incdir
2138     libdir
2139     mandir
2140     pkgconfigdir
2141     prefix
2142     shlibdir
2143     install_name_dir
2144 "
2145
2146 CMDLINE_SET="
2147     $PATHS_LIST
2148     ar
2149     arch
2150     as
2151     assert_level
2152     build_suffix
2153     cc
2154     objcc
2155     cpu
2156     cross_prefix
2157     custom_allocator
2158     cxx
2159     dep_cc
2160     doxygen
2161     env
2162     extra_version
2163     gas
2164     host_cc
2165     host_cflags
2166     host_ld
2167     host_ldflags
2168     host_libs
2169     host_os
2170     install
2171     ld
2172     ln_s
2173     logfile
2174     malloc_prefix
2175     nm
2176     optflags
2177     pkg_config
2178     pkg_config_flags
2179     progs_suffix
2180     random_seed
2181     ranlib
2182     samples
2183     strip
2184     sws_max_filter_size
2185     sysinclude
2186     sysroot
2187     target_exec
2188     target_os
2189     target_path
2190     target_samples
2191     tempprefix
2192     toolchain
2193     valgrind
2194     yasmexe
2195 "
2196
2197 CMDLINE_APPEND="
2198     extra_cflags
2199     extra_cxxflags
2200     extra_objcflags
2201     host_cppflags
2202 "
2203
2204 # code dependency declarations
2205
2206 # architecture extensions
2207
2208 armv5te_deps="arm"
2209 armv6_deps="arm"
2210 armv6t2_deps="arm"
2211 armv8_deps="aarch64"
2212 neon_deps_any="aarch64 arm"
2213 intrinsics_neon_deps="neon"
2214 vfp_deps_any="aarch64 arm"
2215 vfpv3_deps="vfp"
2216 setend_deps="arm"
2217
2218 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2219
2220 loongson2_deps="mips"
2221 loongson3_deps="mips"
2222 mipsfpu_deps="mips"
2223 mipsdsp_deps="mips"
2224 mipsdspr2_deps="mips"
2225 mips32r2_deps="mips"
2226 mips32r5_deps="mips"
2227 mips32r6_deps="mips"
2228 mips64r2_deps="mips"
2229 mips64r6_deps="mips"
2230 msa_deps="mipsfpu"
2231 mmi_deps="mips"
2232
2233 altivec_deps="ppc"
2234 dcbzl_deps="ppc"
2235 ldbrx_deps="ppc"
2236 ppc4xx_deps="ppc"
2237 vsx_deps="altivec"
2238 power8_deps="vsx"
2239
2240 cpunop_deps="i686"
2241 x86_64_select="i686"
2242 x86_64_suggest="fast_cmov"
2243
2244 amd3dnow_deps="mmx"
2245 amd3dnowext_deps="amd3dnow"
2246 i686_deps="x86"
2247 mmx_deps="x86"
2248 mmxext_deps="mmx"
2249 sse_deps="mmxext"
2250 sse2_deps="sse"
2251 sse3_deps="sse2"
2252 ssse3_deps="sse3"
2253 sse4_deps="ssse3"
2254 sse42_deps="sse4"
2255 aesni_deps="sse42"
2256 avx_deps="sse42"
2257 xop_deps="avx"
2258 fma3_deps="avx"
2259 fma4_deps="avx"
2260 avx2_deps="avx"
2261
2262 mmx_external_deps="yasm"
2263 mmx_inline_deps="inline_asm"
2264 mmx_suggest="mmx_external mmx_inline"
2265
2266 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2267     eval dep=\$${ext}_deps
2268     eval ${ext}_external_deps='"${dep}_external"'
2269     eval ${ext}_inline_deps='"${dep}_inline"'
2270     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2271 done
2272
2273 aligned_stack_if_any="aarch64 ppc x86"
2274 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2275 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2276 fast_unaligned_if_any="aarch64 ppc x86"
2277 simd_align_16_if_any="altivec neon sse"
2278
2279 # system capabilities
2280 symver_if_any="symver_asm_label symver_gnu_asm"
2281 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2282
2283 # threading support
2284 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2285 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2286 atomics_win32_if="MemoryBarrier"
2287 atomics_native_if_any="$ATOMICS_LIST"
2288 w32threads_deps="atomics_native"
2289 threads_if_any="$THREADS_LIST"
2290
2291 # subsystems
2292 dct_select="rdft"
2293 dirac_parse_select="golomb"
2294 error_resilience_select="me_cmp"
2295 faandct_deps="faan fdctdsp"
2296 faanidct_deps="faan idctdsp"
2297 h264dsp_select="startcode"
2298 frame_thread_encoder_deps="encoders threads"
2299 intrax8_select="blockdsp idctdsp"
2300 mdct_select="fft"
2301 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2302 mpeg_er_select="error_resilience"
2303 mpegaudio_select="mpegaudiodsp"
2304 mpegaudiodsp_select="dct"
2305 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2306 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2307 vc1dsp_select="h264chroma qpeldsp startcode"
2308 rdft_select="fft"
2309
2310 # decoders / encoders
2311 aac_decoder_select="imdct15 mdct sinewin"
2312 aac_fixed_decoder_select="mdct sinewin"
2313 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2314 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2315 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2316 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2317 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2318 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2319 adpcm_g722_decoder_select="g722dsp"
2320 adpcm_g722_encoder_select="g722dsp"
2321 aic_decoder_select="golomb idctdsp"
2322 alac_encoder_select="lpc"
2323 als_decoder_select="bswapdsp"
2324 amrnb_decoder_select="lsp"
2325 amrwb_decoder_select="lsp"
2326 amv_decoder_select="sp5x_decoder exif"
2327 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2328 ape_decoder_select="bswapdsp llauddsp"
2329 apng_decoder_select="zlib"
2330 apng_encoder_select="huffyuvencdsp zlib"
2331 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2332 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2333 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2334 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2335 atrac1_decoder_select="mdct sinewin"
2336 atrac3_decoder_select="mdct"
2337 atrac3p_decoder_select="mdct sinewin"
2338 avrn_decoder_select="exif jpegtables"
2339 bink_decoder_select="blockdsp hpeldsp"
2340 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2341 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2342 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2343 cllc_decoder_select="bswapdsp"
2344 comfortnoise_encoder_select="lpc"
2345 cook_decoder_select="audiodsp mdct sinewin"
2346 cscd_decoder_select="lzo"
2347 cscd_decoder_suggest="zlib"
2348 dca_decoder_select="mdct"
2349 dds_decoder_select="texturedsp"
2350 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2351 dnxhd_decoder_select="blockdsp idctdsp"
2352 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2353 dvvideo_decoder_select="dvprofile idctdsp"
2354 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2355 dxa_decoder_select="zlib"
2356 dxv_decoder_select="lzf texturedsp"
2357 eac3_decoder_select="ac3_decoder"
2358 eac3_encoder_select="ac3_encoder"
2359 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2360 eatgq_decoder_select="aandcttables"
2361 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2362 exr_decoder_select="zlib"
2363 ffv1_decoder_select="golomb rangecoder"
2364 ffv1_encoder_select="rangecoder"
2365 ffvhuff_decoder_select="huffyuv_decoder"
2366 ffvhuff_encoder_select="huffyuv_encoder"
2367 fic_decoder_select="golomb"
2368 flac_decoder_select="flacdsp golomb"
2369 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2370 flashsv2_decoder_select="zlib"
2371 flashsv2_encoder_select="zlib"
2372 flashsv_decoder_select="zlib"
2373 flashsv_encoder_select="zlib"
2374 flv_decoder_select="h263_decoder"
2375 flv_encoder_select="h263_encoder"
2376 fourxm_decoder_select="blockdsp bswapdsp"
2377 fraps_decoder_select="bswapdsp huffman"
2378 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2379 g729_decoder_select="audiodsp"
2380 h261_decoder_select="mpegvideo"
2381 h261_encoder_select="aandcttables mpegvideoenc"
2382 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2383 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2384 h263i_decoder_select="h263_decoder"
2385 h263p_decoder_select="h263_decoder"
2386 h263p_encoder_select="h263_encoder"
2387 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2388 h264_decoder_suggest="error_resilience"
2389 hap_decoder_select="snappy texturedsp"
2390 hap_encoder_deps="libsnappy"
2391 hap_encoder_select="texturedspenc"
2392 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2393 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2394 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2395 iac_decoder_select="imc_decoder"
2396 imc_decoder_select="bswapdsp fft mdct sinewin"
2397 indeo3_decoder_select="hpeldsp"
2398 indeo4_decoder_select="ividsp"
2399 indeo5_decoder_select="ividsp"
2400 interplay_video_decoder_select="hpeldsp"
2401 jpegls_decoder_select="golomb mjpeg_decoder"
2402 jpegls_encoder_select="golomb"
2403 jv_decoder_select="blockdsp"
2404 lagarith_decoder_select="huffyuvdsp"
2405 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2406 loco_decoder_select="golomb"
2407 magicyuv_decoder_select="huffyuvdsp"
2408 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2409 metasound_decoder_select="lsp mdct sinewin"
2410 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2411 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2412 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2413 mjpegb_decoder_select="mjpeg_decoder"
2414 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2415 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2416 mlp_decoder_select="mlp_parser"
2417 motionpixels_decoder_select="bswapdsp"
2418 mp1_decoder_select="mpegaudio"
2419 mp1float_decoder_select="mpegaudio"
2420 mp2_decoder_select="mpegaudio"
2421 mp2float_decoder_select="mpegaudio"
2422 mp3_decoder_select="mpegaudio"
2423 mp3adu_decoder_select="mpegaudio"
2424 mp3adufloat_decoder_select="mpegaudio"
2425 mp3float_decoder_select="mpegaudio"
2426 mp3on4_decoder_select="mpegaudio"
2427 mp3on4float_decoder_select="mpegaudio"
2428 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2429 mpc8_decoder_select="mpegaudiodsp"
2430 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2431 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2432 mpegvideo_decoder_select="mpegvideo"
2433 mpeg1video_decoder_select="mpegvideo"
2434 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2435 mpeg2video_decoder_select="mpegvideo"
2436 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2437 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2438 mpeg4_encoder_select="h263_encoder"
2439 msa1_decoder_select="mss34dsp"
2440 msmpeg4v1_decoder_select="h263_decoder"
2441 msmpeg4v2_decoder_select="h263_decoder"
2442 msmpeg4v2_encoder_select="h263_encoder"
2443 msmpeg4v3_decoder_select="h263_decoder"
2444 msmpeg4v3_encoder_select="h263_encoder"
2445 mss2_decoder_select="vc1_decoder mpegvideo"
2446 mts2_decoder_select="mss34dsp"
2447 mxpeg_decoder_select="mjpeg_decoder"
2448 nellymoser_decoder_select="mdct sinewin"
2449 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2450 nuv_decoder_select="idctdsp lzo"
2451 on2avc_decoder_select="mdct"
2452 opus_decoder_deps="swresample"
2453 opus_decoder_select="imdct15"
2454 png_decoder_select="zlib"
2455 png_encoder_select="huffyuvencdsp zlib"
2456 prores_decoder_select="blockdsp idctdsp"
2457 prores_encoder_select="fdctdsp"
2458 qcelp_decoder_select="lsp"
2459 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2460 ra_144_decoder_select="audiodsp"
2461 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2462 ralf_decoder_select="golomb"
2463 rawvideo_decoder_select="bswapdsp"
2464 rscc_decoder_select="zlib"
2465 rtjpeg_decoder_select="me_cmp"
2466 rv10_decoder_select="h263_decoder"
2467 rv10_encoder_select="h263_encoder"
2468 rv20_decoder_select="h263_decoder"
2469 rv20_encoder_select="h263_encoder"
2470 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2471 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2472 screenpresso_decoder_select="zlib"
2473 shorten_decoder_select="golomb"
2474 sipr_decoder_select="lsp"
2475 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2476 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2477 sonic_decoder_select="golomb rangecoder"
2478 sonic_encoder_select="golomb rangecoder"
2479 sonic_ls_encoder_select="golomb rangecoder"
2480 sp5x_decoder_select="mjpeg_decoder"
2481 svq1_decoder_select="hpeldsp"
2482 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2483 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2484 svq3_decoder_suggest="zlib"
2485 tak_decoder_select="audiodsp"
2486 tdsc_decoder_select="zlib mjpeg_decoder"
2487 theora_decoder_select="vp3_decoder"
2488 thp_decoder_select="mjpeg_decoder"
2489 tiff_decoder_suggest="zlib lzma"
2490 tiff_encoder_suggest="zlib"
2491 truehd_decoder_select="mlp_parser"
2492 truemotion2_decoder_select="bswapdsp"
2493 truespeech_decoder_select="bswapdsp"
2494 tscc_decoder_select="zlib"
2495 twinvq_decoder_select="mdct lsp sinewin"
2496 txd_decoder_select="texturedsp"
2497 utvideo_decoder_select="bswapdsp"
2498 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2499 vble_decoder_select="huffyuvdsp"
2500 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2501 vc1_qsv_decoder_deps="libmfx"
2502 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2503 vc1image_decoder_select="vc1_decoder"
2504 vorbis_decoder_select="mdct"
2505 vorbis_encoder_select="mdct"
2506 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2507 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2508 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2509 vp6a_decoder_select="vp6_decoder"
2510 vp6f_decoder_select="vp6_decoder"
2511 vp7_decoder_select="h264pred videodsp vp8dsp"
2512 vp8_decoder_select="h264pred videodsp vp8dsp"
2513 vp9_decoder_select="videodsp vp9_parser"
2514 webp_decoder_select="vp8_decoder exif"
2515 wmalossless_decoder_select="llauddsp"
2516 wmapro_decoder_select="mdct sinewin wma_freqs"
2517 wmav1_decoder_select="mdct sinewin wma_freqs"
2518 wmav1_encoder_select="mdct sinewin wma_freqs"
2519 wmav2_decoder_select="mdct sinewin wma_freqs"
2520 wmav2_encoder_select="mdct sinewin wma_freqs"
2521 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2522 wmv1_decoder_select="h263_decoder"
2523 wmv1_encoder_select="h263_encoder"
2524 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2525 wmv2_encoder_select="h263_encoder wmv2dsp"
2526 wmv3_decoder_select="vc1_decoder"
2527 wmv3image_decoder_select="wmv3_decoder"
2528 xma1_decoder_select="wmapro_decoder"
2529 xma2_decoder_select="wmapro_decoder"
2530 zerocodec_decoder_select="zlib"
2531 zlib_decoder_select="zlib"
2532 zlib_encoder_select="zlib"
2533 zmbv_decoder_select="zlib"
2534 zmbv_encoder_select="zlib"
2535
2536 # platform codecs
2537 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2538 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2539
2540 # hardware accelerators
2541 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2542 cuvid_deps="cuda"
2543 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2544 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2545 vaapi_deps="va_va_h"
2546 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2547 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2548 vda_deps="vda_framework pthreads"
2549 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2550 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2551 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2552 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2553 xvmc_deps="X11_extensions_XvMClib_h"
2554
2555 h263_cuvid_hwaccel_deps="cuda cuvid"
2556 h263_vaapi_hwaccel_deps="vaapi"
2557 h263_vaapi_hwaccel_select="h263_decoder"
2558 h263_videotoolbox_hwaccel_deps="videotoolbox"
2559 h263_videotoolbox_hwaccel_select="h263_decoder"
2560 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2561 h264_cuvid_hwaccel_deps="cuda cuvid"
2562 h264_d3d11va_hwaccel_deps="d3d11va"
2563 h264_d3d11va_hwaccel_select="h264_decoder"
2564 h264_dxva2_hwaccel_deps="dxva2"
2565 h264_dxva2_hwaccel_select="h264_decoder"
2566 h264_mediacodec_decoder_deps="mediacodec"
2567 h264_mediacodec_hwaccel_deps="mediacodec"
2568 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2569 h264_mmal_decoder_deps="mmal"
2570 h264_mmal_decoder_select="mmal"
2571 h264_mmal_hwaccel_deps="mmal"
2572 h264_omx_encoder_deps="omx"
2573 h264_qsv_hwaccel_deps="libmfx"
2574 h264_vaapi_hwaccel_deps="vaapi"
2575 h264_vaapi_hwaccel_select="h264_decoder"
2576 h264_vda_decoder_deps="vda"
2577 h264_vda_decoder_select="h264_decoder"
2578 h264_vda_hwaccel_deps="vda"
2579 h264_vda_hwaccel_select="h264_decoder"
2580 h264_vda_old_hwaccel_deps="vda"
2581 h264_vda_old_hwaccel_select="h264_decoder"
2582 h264_vdpau_decoder_deps="vdpau"
2583 h264_vdpau_decoder_select="h264_decoder"
2584 h264_vdpau_hwaccel_deps="vdpau"
2585 h264_vdpau_hwaccel_select="h264_decoder"
2586 h264_videotoolbox_hwaccel_deps="videotoolbox"
2587 h264_videotoolbox_hwaccel_select="h264_decoder"
2588 hevc_cuvid_hwaccel_deps="cuda cuvid"
2589 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2590 hevc_d3d11va_hwaccel_select="hevc_decoder"
2591 hevc_mediacodec_decoder_deps="mediacodec"
2592 hevc_mediacodec_hwaccel_deps="mediacodec"
2593 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2594 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2595 hevc_dxva2_hwaccel_select="hevc_decoder"
2596 hevc_qsv_hwaccel_deps="libmfx"
2597 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2598 hevc_vaapi_hwaccel_select="hevc_decoder"
2599 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2600 hevc_vdpau_hwaccel_select="hevc_decoder"
2601 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2602 mpeg_vdpau_decoder_deps="vdpau"
2603 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2604 mpeg_xvmc_hwaccel_deps="xvmc"
2605 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2606 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2607 mpeg1_vdpau_decoder_deps="vdpau"
2608 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2609 mpeg1_vdpau_hwaccel_deps="vdpau"
2610 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2611 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2612 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2613 mpeg1_xvmc_hwaccel_deps="xvmc"
2614 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2615 mpeg2_crystalhd_decoder_select="crystalhd"
2616 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2617 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2618 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2619 mpeg2_dxva2_hwaccel_deps="dxva2"
2620 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2621 mpeg2_mmal_decoder_deps="mmal"
2622 mpeg2_mmal_decoder_select="mmal"
2623 mpeg2_mmal_hwaccel_deps="mmal"
2624 mpeg2_qsv_hwaccel_deps="libmfx"
2625 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2626 mpeg2_vaapi_hwaccel_deps="vaapi"
2627 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2628 mpeg2_vdpau_hwaccel_deps="vdpau"
2629 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2630 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2631 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2632 mpeg2_xvmc_hwaccel_deps="xvmc"
2633 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2634 mpeg4_crystalhd_decoder_select="crystalhd"
2635 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2636 mpeg4_mediacodec_decoder_deps="mediacodec"
2637 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2638 mpeg4_mmal_decoder_deps="mmal"
2639 mpeg4_mmal_decoder_select="mmal"
2640 mpeg4_mmal_hwaccel_deps="mmal"
2641 mpeg4_omx_encoder_deps="omx"
2642 mpeg4_vaapi_hwaccel_deps="vaapi"
2643 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2644 mpeg4_vdpau_decoder_deps="vdpau"
2645 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2646 mpeg4_vdpau_hwaccel_deps="vdpau"
2647 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2648 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2649 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2650 msmpeg4_crystalhd_decoder_select="crystalhd"
2651 vc1_crystalhd_decoder_select="crystalhd"
2652 vc1_cuvid_hwaccel_deps="cuda cuvid"
2653 vc1_d3d11va_hwaccel_deps="d3d11va"
2654 vc1_d3d11va_hwaccel_select="vc1_decoder"
2655 vc1_dxva2_hwaccel_deps="dxva2"
2656 vc1_dxva2_hwaccel_select="vc1_decoder"
2657 vc1_mmal_decoder_deps="mmal"
2658 vc1_mmal_decoder_select="mmal"
2659 vc1_mmal_hwaccel_deps="mmal"
2660 vc1_qsv_hwaccel_deps="libmfx"
2661 vc1_qsv_hwaccel_select="qsvdec_vc1"
2662 vc1_vaapi_hwaccel_deps="vaapi"
2663 vc1_vaapi_hwaccel_select="vc1_decoder"
2664 vc1_vdpau_decoder_deps="vdpau"
2665 vc1_vdpau_decoder_select="vc1_decoder"
2666 vc1_vdpau_hwaccel_deps="vdpau"
2667 vc1_vdpau_hwaccel_select="vc1_decoder"
2668 vp8_cuvid_hwaccel_deps="cuda cuvid"
2669 vp9_cuvid_hwaccel_deps="cuda cuvid"
2670 vp8_mediacodec_decoder_deps="mediacodec"
2671 vp8_mediacodec_hwaccel_deps="mediacodec"
2672 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2673 vp9_d3d11va_hwaccel_select="vp9_decoder"
2674 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2675 vp9_dxva2_hwaccel_select="vp9_decoder"
2676 vp9_mediacodec_decoder_deps="mediacodec"
2677 vp9_mediacodec_hwaccel_deps="mediacodec"
2678 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2679 vp9_vaapi_hwaccel_select="vp9_decoder"
2680 wmv3_crystalhd_decoder_select="crystalhd"
2681 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2682 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2683 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2684 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2685 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2686
2687 # hardware-accelerated codecs
2688 omx_deps="dlopen pthreads"
2689 omx_extralibs='$ldl'
2690 qsvdec_select="qsv"
2691 qsvenc_select="qsv"
2692 vaapi_encode_deps="vaapi"
2693
2694 hwupload_cuda_filter_deps="cuda"
2695 scale_npp_filter_deps="cuda libnpp"
2696
2697 nvenc_deps_any="dlopen LoadLibrary"
2698 nvenc_encoder_deps="nvenc"
2699 h263_cuvid_decoder_deps="cuda cuvid"
2700 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2701 h264_cuvid_decoder_deps="cuda cuvid"
2702 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2703 h264_nvenc_encoder_deps="nvenc"
2704 h264_qsv_decoder_deps="libmfx"
2705 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2706 h264_qsv_encoder_deps="libmfx"
2707 h264_qsv_encoder_select="qsvenc"
2708 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2709 h264_vaapi_encoder_select="vaapi_encode golomb"
2710
2711 hevc_cuvid_decoder_deps="cuda cuvid"
2712 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2713 hevc_nvenc_encoder_deps="nvenc"
2714 hevc_qsv_decoder_deps="libmfx"
2715 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2716 hevc_qsv_encoder_deps="libmfx"
2717 hevc_qsv_encoder_select="qsvenc"
2718 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2719 hevc_vaapi_encoder_select="vaapi_encode golomb"
2720 mjpeg_cuvid_decoder_deps="cuda cuvid"
2721 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2722 mpeg1_cuvid_decoder_deps="cuda cuvid"
2723 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2724 mpeg2_cuvid_decoder_deps="cuda cuvid"
2725 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2726 mpeg2_qsv_decoder_deps="libmfx"
2727 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2728 mpeg2_qsv_encoder_deps="libmfx"
2729 mpeg2_qsv_encoder_select="qsvenc"
2730 mpeg4_cuvid_decoder_deps="cuda cuvid"
2731 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2732 nvenc_h264_encoder_deps="nvenc"
2733 nvenc_hevc_encoder_deps="nvenc"
2734
2735 vc1_cuvid_decoder_deps="cuda cuvid"
2736 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2737 vp8_cuvid_decoder_deps="cuda cuvid"
2738 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2739 vp9_cuvid_decoder_deps="cuda cuvid"
2740 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2741
2742 # parsers
2743 h264_parser_select="golomb h264dsp"
2744 hevc_parser_select="golomb"
2745 mpegvideo_parser_select="mpegvideo"
2746 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2747 vc1_parser_select="vc1dsp"
2748
2749 # bitstream_filters
2750 mjpeg2jpeg_bsf_select="jpegtables"
2751
2752 # external libraries
2753 aac_at_decoder_deps="audiotoolbox"
2754 ac3_at_decoder_deps="audiotoolbox"
2755 ac3_at_decoder_select="ac3_parser"
2756 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2757 alac_at_decoder_deps="audiotoolbox"
2758 amr_nb_at_decoder_deps="audiotoolbox"
2759 eac3_at_decoder_deps="audiotoolbox"
2760 eac3_at_decoder_select="ac3_parser"
2761 gsm_ms_at_decoder_deps="audiotoolbox"
2762 ilbc_at_decoder_deps="audiotoolbox"
2763 mp1_at_decoder_deps="audiotoolbox"
2764 mp2_at_decoder_deps="audiotoolbox"
2765 mp3_at_decoder_deps="audiotoolbox"
2766 pcm_alaw_at_decoder_deps="audiotoolbox"
2767 pcm_mulaw_at_decoder_deps="audiotoolbox"
2768 qdmc_at_decoder_deps="audiotoolbox"
2769 qdm2_at_decoder_deps="audiotoolbox"
2770 aac_at_encoder_deps="audiotoolbox"
2771 aac_at_encoder_select="audio_frame_queue"
2772 alac_at_encoder_deps="audiotoolbox"
2773 alac_at_encoder_select="audio_frame_queue"
2774 ilbc_at_encoder_deps="audiotoolbox"
2775 ilbc_at_encoder_select="audio_frame_queue"
2776 pcm_alaw_at_encoder_deps="audiotoolbox"
2777 pcm_alaw_at_encoder_select="audio_frame_queue"
2778 pcm_mulaw_at_encoder_deps="audiotoolbox"
2779 pcm_mulaw_at_encoder_select="audio_frame_queue"
2780 chromaprint_muxer_deps="chromaprint"
2781 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2782 libcelt_decoder_deps="libcelt"
2783 libfdk_aac_decoder_deps="libfdk_aac"
2784 libfdk_aac_encoder_deps="libfdk_aac"
2785 libfdk_aac_encoder_select="audio_frame_queue"
2786 libgme_demuxer_deps="libgme"
2787 libgsm_decoder_deps="libgsm"
2788 libgsm_encoder_deps="libgsm"
2789 libgsm_ms_decoder_deps="libgsm"
2790 libgsm_ms_encoder_deps="libgsm"
2791 libilbc_decoder_deps="libilbc"
2792 libilbc_encoder_deps="libilbc"
2793 libkvazaar_encoder_deps="libkvazaar"
2794 libmodplug_demuxer_deps="libmodplug"
2795 libmp3lame_encoder_deps="libmp3lame"
2796 libmp3lame_encoder_select="audio_frame_queue"
2797 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2798 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2799 libopencore_amrnb_encoder_select="audio_frame_queue"
2800 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2801 libopenh264_decoder_deps="libopenh264"
2802 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2803 libopenh264_encoder_deps="libopenh264"
2804 libopenjpeg_decoder_deps="libopenjpeg"
2805 libopenjpeg_encoder_deps="libopenjpeg"
2806 libopenmpt_demuxer_deps="libopenmpt"
2807 libopus_decoder_deps="libopus"
2808 libopus_encoder_deps="libopus"
2809 libopus_encoder_select="audio_frame_queue"
2810 libschroedinger_decoder_deps="libschroedinger"
2811 libschroedinger_encoder_deps="libschroedinger"
2812 libshine_encoder_deps="libshine"
2813 libshine_encoder_select="audio_frame_queue"
2814 libspeex_decoder_deps="libspeex"
2815 libspeex_encoder_deps="libspeex"
2816 libspeex_encoder_select="audio_frame_queue"
2817 libtheora_encoder_deps="libtheora"
2818 libtwolame_encoder_deps="libtwolame"
2819 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2820 libvorbis_decoder_deps="libvorbis"
2821 libvorbis_encoder_deps="libvorbis"
2822 libvorbis_encoder_select="audio_frame_queue"
2823 libvpx_vp8_decoder_deps="libvpx"
2824 libvpx_vp8_encoder_deps="libvpx"
2825 libvpx_vp9_decoder_deps="libvpx"
2826 libvpx_vp9_encoder_deps="libvpx"
2827 libwavpack_encoder_deps="libwavpack"
2828 libwebp_encoder_deps="libwebp"
2829 libwebp_anim_encoder_deps="libwebp"
2830 libx262_encoder_deps="libx262"
2831 libx264_encoder_deps="libx264"
2832 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2833 libx264rgb_encoder_select="libx264_encoder"
2834 libx265_encoder_deps="libx265"
2835 libxavs_encoder_deps="libxavs"
2836 libxvid_encoder_deps="libxvid"
2837 libzvbi_teletext_decoder_deps="libzvbi"
2838 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2839 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2840 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2841 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2842 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2843
2844 # demuxers / muxers
2845 ac3_demuxer_select="ac3_parser"
2846 asf_demuxer_select="riffdec"
2847 asf_o_demuxer_select="riffdec"
2848 asf_muxer_select="riffenc"
2849 asf_stream_muxer_select="asf_muxer"
2850 avi_demuxer_select="iso_media riffdec exif"
2851 avi_muxer_select="riffenc"
2852 avisynth_demuxer_deps="avisynth"
2853 avisynth_demuxer_select="riffdec"
2854 caf_demuxer_select="iso_media riffdec"
2855 dash_muxer_select="mp4_muxer"
2856 dirac_demuxer_select="dirac_parser"
2857 dts_demuxer_select="dca_parser"
2858 dtshd_demuxer_select="dca_parser"
2859 dv_demuxer_select="dvprofile"
2860 dv_muxer_select="dvprofile"
2861 dxa_demuxer_select="riffdec"
2862 eac3_demuxer_select="ac3_parser"
2863 f4v_muxer_select="mov_muxer"
2864 fifo_muxer_deps="threads"
2865 flac_demuxer_select="flac_parser"
2866 hds_muxer_select="flv_muxer"
2867 hls_muxer_select="mpegts_muxer"
2868 image2_alias_pix_demuxer_select="image2_demuxer"
2869 image2_brender_pix_demuxer_select="image2_demuxer"
2870 ipod_muxer_select="mov_muxer"
2871 ismv_muxer_select="mov_muxer"
2872 libnut_demuxer_deps="libnut"
2873 libnut_muxer_deps="libnut"
2874 matroska_audio_muxer_select="matroska_muxer"
2875 matroska_demuxer_select="iso_media riffdec"
2876 matroska_demuxer_suggest="bzlib lzo zlib"
2877 matroska_muxer_select="iso_media riffenc"
2878 mmf_muxer_select="riffenc"
2879 mov_demuxer_select="iso_media riffdec"
2880 mov_demuxer_suggest="zlib"
2881 mov_muxer_select="iso_media riffenc rtpenc_chain"
2882 mp3_demuxer_select="mpegaudio_parser"
2883 mp4_muxer_select="mov_muxer"
2884 mpegts_demuxer_select="iso_media"
2885 mpegts_muxer_select="adts_muxer latm_muxer"
2886 mpegtsraw_demuxer_select="mpegts_demuxer"
2887 mxf_d10_muxer_select="mxf_muxer"
2888 mxf_opatom_muxer_select="mxf_muxer"
2889 nut_muxer_select="riffenc"
2890 nuv_demuxer_select="riffdec"
2891 oga_muxer_select="ogg_muxer"
2892 ogg_demuxer_select="dirac_parse"
2893 ogv_muxer_select="ogg_muxer"
2894 opus_muxer_select="ogg_muxer"
2895 psp_muxer_select="mov_muxer"
2896 rtp_demuxer_select="sdp_demuxer"
2897 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2898 rtsp_demuxer_select="http_protocol rtpdec"
2899 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2900 sap_demuxer_select="sdp_demuxer"
2901 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2902 sdp_demuxer_select="rtpdec"
2903 smoothstreaming_muxer_select="ismv_muxer"
2904 spdif_muxer_select="aac_parser"
2905 spx_muxer_select="ogg_muxer"
2906 swf_demuxer_suggest="zlib"
2907 tak_demuxer_select="tak_parser"
2908 tg2_muxer_select="mov_muxer"
2909 tgp_muxer_select="mov_muxer"
2910 vobsub_demuxer_select="mpegps_demuxer"
2911 w64_demuxer_select="wav_demuxer"
2912 w64_muxer_select="wav_muxer"
2913 wav_demuxer_select="riffdec"
2914 wav_muxer_select="riffenc"
2915 webm_muxer_select="iso_media riffenc"
2916 webm_dash_manifest_demuxer_select="matroska_demuxer"
2917 wtv_demuxer_select="mpegts_demuxer riffdec"
2918 wtv_muxer_select="mpegts_muxer riffenc"
2919 xmv_demuxer_select="riffdec"
2920 xwma_demuxer_select="riffdec"
2921
2922 # indevs / outdevs
2923 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2924 alsa_outdev_deps="alsa_asoundlib_h"
2925 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2926 avfoundation_indev_select="avfoundation"
2927 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2928 caca_outdev_deps="libcaca"
2929 decklink_indev_deps="decklink pthreads"
2930 decklink_indev_extralibs="-lstdc++"
2931 decklink_outdev_deps="decklink pthreads"
2932 decklink_outdev_extralibs="-lstdc++"
2933 dshow_indev_deps="IBaseFilter"
2934 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2935 dv1394_indev_deps="dv1394"
2936 dv1394_indev_select="dv_demuxer"
2937 fbdev_indev_deps="linux_fb_h"
2938 fbdev_outdev_deps="linux_fb_h"
2939 gdigrab_indev_deps="CreateDIBSection"
2940 gdigrab_indev_extralibs="-lgdi32"
2941 gdigrab_indev_select="bmp_decoder"
2942 iec61883_indev_deps="libiec61883"
2943 jack_indev_deps="jack_jack_h"
2944 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2945 lavfi_indev_deps="avfilter"
2946 libcdio_indev_deps="libcdio"
2947 libdc1394_indev_deps="libdc1394"
2948 libv4l2_indev_deps="libv4l2"
2949 openal_indev_deps="openal"
2950 opengl_outdev_deps="opengl"
2951 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2952 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2953 pulse_indev_deps="libpulse"
2954 pulse_outdev_deps="libpulse"
2955 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2956 qtkit_indev_select="qtkit"
2957 sdl2_outdev_deps="sdl2"
2958 sndio_indev_deps="sndio_h"
2959 sndio_outdev_deps="sndio_h"
2960 v4l_indev_deps="linux_videodev_h"
2961 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2962 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2963 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2964 vfwcap_indev_extralibs="-lavicap32"
2965 x11grab_indev_deps="x11grab"
2966 x11grab_xcb_indev_deps="libxcb"
2967 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2968 xv_outdev_extralibs="-lXv -lX11 -lXext"
2969
2970 # protocols
2971 async_protocol_deps="threads"
2972 bluray_protocol_deps="libbluray"
2973 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2974 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2975 ffrtmpcrypt_protocol_select="tcp_protocol"
2976 ffrtmphttp_protocol_deps="!librtmp_protocol"
2977 ffrtmphttp_protocol_select="http_protocol"
2978 ftp_protocol_select="tcp_protocol"
2979 gopher_protocol_select="network"
2980 http_protocol_select="tcp_protocol"
2981 httpproxy_protocol_select="tcp_protocol"
2982 https_protocol_select="tls_protocol"
2983 icecast_protocol_select="http_protocol"
2984 librtmp_protocol_deps="librtmp"
2985 librtmpe_protocol_deps="librtmp"
2986 librtmps_protocol_deps="librtmp"
2987 librtmpt_protocol_deps="librtmp"
2988 librtmpte_protocol_deps="librtmp"
2989 libsmbclient_protocol_deps="libsmbclient gplv3"
2990 libssh_protocol_deps="libssh"
2991 mmsh_protocol_select="http_protocol"
2992 mmst_protocol_select="network"
2993 rtmp_protocol_deps="!librtmp_protocol"
2994 rtmp_protocol_select="tcp_protocol"
2995 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2996 rtmps_protocol_deps="!librtmp_protocol"
2997 rtmps_protocol_select="tls_protocol"
2998 rtmpt_protocol_select="ffrtmphttp_protocol"
2999 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3000 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3001 rtp_protocol_select="udp_protocol"
3002 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3003 sctp_protocol_select="network"
3004 srtp_protocol_select="rtp_protocol srtp"
3005 tcp_protocol_select="network"
3006 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3007 tls_gnutls_protocol_select="tcp_protocol"
3008 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3009 tls_openssl_protocol_select="tcp_protocol"
3010 tls_schannel_protocol_deps="schannel"
3011 tls_schannel_protocol_select="tcp_protocol"
3012 tls_securetransport_protocol_deps="securetransport"
3013 tls_securetransport_protocol_select="tcp_protocol"
3014 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3015 udp_protocol_select="network"
3016 udplite_protocol_select="network"
3017 unix_protocol_deps="sys_un_h"
3018 unix_protocol_select="network"
3019
3020 # filters
3021 afftfilt_filter_deps="avcodec"
3022 afftfilt_filter_select="fft"
3023 amovie_filter_deps="avcodec avformat"
3024 aresample_filter_deps="swresample"
3025 ass_filter_deps="libass"
3026 asyncts_filter_deps="avresample"
3027 atempo_filter_deps="avcodec"
3028 atempo_filter_select="rdft"
3029 azmq_filter_deps="libzmq"
3030 blackframe_filter_deps="gpl"
3031 boxblur_filter_deps="gpl"
3032 bs2b_filter_deps="libbs2b"
3033 colormatrix_filter_deps="gpl"
3034 cover_rect_filter_deps="avcodec avformat gpl"
3035 cropdetect_filter_deps="gpl"
3036 delogo_filter_deps="gpl"
3037 deshake_filter_select="pixelutils"
3038 drawtext_filter_deps="libfreetype"
3039 ebur128_filter_deps="gpl"
3040 eq_filter_deps="gpl"
3041 fftfilt_filter_deps="avcodec"
3042 fftfilt_filter_select="rdft"
3043 find_rect_filter_deps="avcodec avformat gpl"
3044 firequalizer_filter_deps="avcodec"
3045 firequalizer_filter_select="rdft"
3046 flite_filter_deps="libflite"
3047 framerate_filter_select="pixelutils"
3048 frei0r_filter_deps="frei0r dlopen"
3049 frei0r_src_filter_deps="frei0r dlopen"
3050 fspp_filter_deps="gpl"
3051 geq_filter_deps="gpl"
3052 histeq_filter_deps="gpl"
3053 hqdn3d_filter_deps="gpl"
3054 interlace_filter_deps="gpl"
3055 kerndeint_filter_deps="gpl"
3056 ladspa_filter_deps="ladspa dlopen"
3057 loudnorm_filter_deps="libebur128"
3058 mcdeint_filter_deps="avcodec gpl"
3059 movie_filter_deps="avcodec avformat"
3060 mpdecimate_filter_deps="gpl"
3061 mpdecimate_filter_select="pixelutils"
3062 mptestsrc_filter_deps="gpl"
3063 negate_filter_deps="lut_filter"
3064 nnedi_filter_deps="gpl"
3065 ocr_filter_deps="libtesseract"
3066 ocv_filter_deps="libopencv"
3067 owdenoise_filter_deps="gpl"
3068 pan_filter_deps="swresample"
3069 perspective_filter_deps="gpl"
3070 phase_filter_deps="gpl"
3071 pp7_filter_deps="gpl"
3072 pp_filter_deps="gpl postproc"
3073 pullup_filter_deps="gpl"
3074 removelogo_filter_deps="avcodec avformat swscale"
3075 repeatfields_filter_deps="gpl"
3076 resample_filter_deps="avresample"
3077 rubberband_filter_deps="librubberband"
3078 sab_filter_deps="gpl swscale"
3079 scale2ref_filter_deps="swscale"
3080 scale_filter_deps="swscale"
3081 select_filter_select="pixelutils"
3082 showcqt_filter_deps="avcodec avformat swscale"
3083 showcqt_filter_select="fft"
3084 showfreqs_filter_deps="avcodec"
3085 showfreqs_filter_select="fft"
3086 showspectrum_filter_deps="avcodec"
3087 showspectrum_filter_select="fft"
3088 showspectrumpic_filter_deps="avcodec"
3089 showspectrumpic_filter_select="fft"
3090 smartblur_filter_deps="gpl swscale"
3091 sofalizer_filter_deps="netcdf avcodec"
3092 sofalizer_filter_select="fft"
3093 spectrumsynth_filter_deps="avcodec"
3094 spectrumsynth_filter_select="fft"
3095 spp_filter_deps="gpl avcodec"
3096 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3097 stereo3d_filter_deps="gpl"
3098 subtitles_filter_deps="avformat avcodec libass"
3099 super2xsai_filter_deps="gpl"
3100 pixfmts_super2xsai_test_deps="super2xsai_filter"
3101 tinterlace_filter_deps="gpl"
3102 tinterlace_merge_test_deps="tinterlace_filter"
3103 tinterlace_pad_test_deps="tinterlace_filter"
3104 uspp_filter_deps="gpl avcodec"
3105 vaguedenoiser_filter_deps="gpl"
3106 vidstabdetect_filter_deps="libvidstab"
3107 vidstabtransform_filter_deps="libvidstab"
3108 zmq_filter_deps="libzmq"
3109 zoompan_filter_deps="swscale"
3110 zscale_filter_deps="libzimg"
3111 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3112
3113 # examples
3114 avio_dir_cmd_deps="avformat avutil"
3115 avio_reading_deps="avformat avcodec avutil"
3116 decoding_encoding_example_deps="avcodec avformat avutil"
3117 demuxing_decoding_example_deps="avcodec avformat avutil"
3118 extract_mvs_example_deps="avcodec avformat avutil"
3119 filter_audio_example_deps="avfilter avutil"
3120 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3121 filtering_video_example_deps="avfilter avcodec avformat avutil"
3122 http_multiclient_example_deps="avformat avutil"
3123 metadata_example_deps="avformat avutil"
3124 muxing_example_deps="avcodec avformat avutil swscale"
3125 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3126 remuxing_example_deps="avcodec avformat avutil"
3127 resampling_audio_example_deps="avutil swresample"
3128 scaling_video_example_deps="avutil swscale"
3129 transcode_aac_example_deps="avcodec avformat swresample"
3130 transcoding_example_deps="avfilter avcodec avformat avutil"
3131
3132 # libraries, in linking order
3133 avcodec_deps="avutil"
3134 avdevice_deps="avformat avcodec avutil"
3135 avfilter_deps="avutil"
3136 avformat_deps="avcodec avutil"
3137 avresample_deps="avutil"
3138 postproc_deps="avutil gpl"
3139 swresample_deps="avutil"
3140 swscale_deps="avutil"
3141
3142 # programs
3143 ffmpeg_deps="avcodec avfilter avformat swresample"
3144 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3145                null_filter
3146                setpts_filter trim_filter"
3147 ffplay_deps="avcodec avformat swscale swresample sdl2"
3148 ffplay_libs='$sdl2_libs'
3149 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3150 ffprobe_deps="avcodec avformat"
3151 ffserver_deps="avformat fork sarestart"
3152 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3153
3154 # documentation
3155 podpages_deps="perl"
3156 manpages_deps="perl pod2man"
3157 htmlpages_deps="perl"
3158 htmlpages_deps_any="makeinfo_html texi2html"
3159 txtpages_deps="perl makeinfo"
3160 doc_deps_any="manpages htmlpages podpages txtpages"
3161
3162 # default parameters
3163
3164 logfile="config.log"
3165
3166 # installation paths
3167 prefix_default="/usr/local"
3168 bindir_default='${prefix}/bin'
3169 datadir_default='${prefix}/share/ffmpeg'
3170 docdir_default='${prefix}/share/doc/ffmpeg'
3171 incdir_default='${prefix}/include'
3172 libdir_default='${prefix}/lib'
3173 mandir_default='${prefix}/share/man'
3174
3175 # toolchain
3176 ar_default="ar"
3177 cc_default="gcc"
3178 cxx_default="g++"
3179 host_cc_default="gcc"
3180 cp_f="cp -f"
3181 doxygen_default="doxygen"
3182 install="install"
3183 ln_s_default="ln -s -f"
3184 nm_default="nm -g"
3185 objformat="elf"
3186 pkg_config_default=pkg-config
3187 ranlib_default="ranlib"
3188 strip_default="strip"
3189 version_script='--version-script'
3190 yasmexe_default="yasm"
3191 windres_default="windres"
3192
3193 # OS
3194 target_os_default=$(tolower $(uname -s))
3195 host_os=$target_os_default
3196
3197 # machine
3198 if test "$target_os_default" = aix; then
3199     arch_default=$(uname -p)
3200     strip_default="strip -X32_64"
3201 else
3202     arch_default=$(uname -m)
3203 fi
3204 cpu="generic"
3205 intrinsics="none"
3206
3207 # configurable options
3208 enable $PROGRAM_LIST
3209 enable $DOCUMENT_LIST
3210 enable $EXAMPLE_LIST
3211 enable $(filter_out avresample $LIBRARY_LIST)
3212 enable stripping
3213
3214 enable asm
3215 enable debug
3216 enable doc
3217 enable faan faandct faanidct
3218 enable optimizations
3219 enable runtime_cpudetect
3220 enable safe_bitstream_reader
3221 enable static
3222 enable swscale_alpha
3223 enable valgrind_backtrace
3224
3225 sws_max_filter_size_default=256
3226 set_default sws_max_filter_size
3227
3228 # Enable platform codecs by default.
3229 enable audiotoolbox
3230
3231 # Enable hwaccels by default.
3232 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3233 enable xlib
3234
3235 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3236
3237 # build settings
3238 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3239 LIBPREF="lib"
3240 LIBSUF=".a"
3241 FULLNAME='$(NAME)$(BUILDSUF)'
3242 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3243 SLIBPREF="lib"
3244 SLIBSUF=".so"
3245 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3246 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3247 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3248 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3249 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3250 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3251 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3252
3253 asflags_filter=echo
3254 cflags_filter=echo
3255 ldflags_filter=echo
3256
3257 AS_C='-c'
3258 AS_O='-o $@'
3259 CC_C='-c'
3260 CC_E='-E -o $@'
3261 CC_O='-o $@'
3262 CXX_C='-c'
3263 CXX_O='-o $@'
3264 OBJCC_C='-c'
3265 OBJCC_E='-E -o $@'
3266 OBJCC_O='-o $@'
3267 LD_O='-o $@'
3268 LD_LIB='-l%'
3269 LD_PATH='-L'
3270 HOSTCC_C='-c'
3271 HOSTCC_E='-E -o $@'
3272 HOSTCC_O='-o $@'
3273 HOSTLD_O='-o $@'
3274
3275 host_libs='-lm'
3276 host_cflags_filter=echo
3277 host_ldflags_filter=echo
3278
3279 target_path='$(CURDIR)'
3280
3281 # since the object filename is not given with the -MM flag, the compiler
3282 # is only able to print the basename, and we must add the path ourselves
3283 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3284 DEPFLAGS='-MM'
3285
3286 # find source path
3287 if test -f configure; then
3288     source_path=.
3289 else
3290     source_path=$(cd $(dirname "$0"); pwd)
3291     case "$source_path" in
3292         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3293     esac
3294     test -e "$source_path/config.h" &&
3295         die "Out of tree builds are impossible with config.h in source dir."
3296 fi
3297
3298 for v in "$@"; do
3299     r=${v#*=}
3300     l=${v%"$r"}
3301     r=$(sh_quote "$r")
3302     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3303 done
3304
3305 find_things(){
3306     thing=$1
3307     pattern=$2
3308     file=$source_path/$3
3309     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3310 }
3311
3312 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3313 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3314 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3315 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3316 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3317 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3318 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3319 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3320 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3321
3322 find_things_extern(){
3323     thing=$1
3324     pattern=$2
3325     file=$source_path/$3
3326     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3327 }
3328
3329 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3330 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3331
3332 ALL_COMPONENTS="
3333     $BSF_LIST
3334     $DECODER_LIST
3335     $DEMUXER_LIST
3336     $ENCODER_LIST
3337     $FILTER_LIST
3338     $HWACCEL_LIST
3339     $INDEV_LIST
3340     $MUXER_LIST
3341     $OUTDEV_LIST
3342     $PARSER_LIST
3343     $PROTOCOL_LIST
3344 "
3345
3346 for n in $COMPONENT_LIST; do
3347     v=$(toupper ${n%s})_LIST
3348     eval enable \$$v
3349     eval ${n}_if_any="\$$v"
3350 done
3351
3352 enable $ARCH_EXT_LIST
3353
3354 die_unknown(){
3355     echo "Unknown option \"$1\"."
3356     echo "See $0 --help for available options."
3357     exit 1
3358 }
3359
3360 print_in_columns() {
3361     cols=$(expr $ncols / 24)
3362     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3363 }
3364
3365 show_list() {
3366     suffix=_$1
3367     shift
3368     echo $* | sed s/$suffix//g | print_in_columns
3369     exit 0
3370 }
3371
3372 rand_list(){
3373     IFS=', '
3374     set -- $*
3375     unset IFS
3376     for thing; do
3377         comp=${thing%:*}
3378         prob=${thing#$comp}
3379         prob=${prob#:}
3380         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3381         echo "prob ${prob:-0.5}"
3382         printf '%s\n' $comp
3383     done
3384 }
3385
3386 do_random(){
3387     action=$1
3388     shift
3389     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3390     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3391 }
3392
3393 for opt do
3394     optval="${opt#*=}"
3395     case "$opt" in
3396         --extra-ldflags=*)
3397             add_ldflags $optval
3398         ;;
3399         --extra-ldexeflags=*)
3400             add_ldexeflags $optval
3401         ;;
3402         --extra-ldlibflags=*)
3403             add_ldlibflags $optval
3404         ;;
3405         --extra-libs=*)
3406             add_extralibs $optval
3407         ;;
3408         --disable-devices)
3409             disable $INDEV_LIST $OUTDEV_LIST
3410         ;;
3411         --enable-debug=*)
3412             debuglevel="$optval"
3413         ;;
3414         --disable-programs)
3415             disable $PROGRAM_LIST
3416         ;;
3417         --disable-everything)
3418             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3419         ;;
3420         --disable-all)
3421             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3422             disable $LIBRARY_LIST $PROGRAM_LIST doc
3423             enable avutil
3424         ;;
3425         --enable-random|--disable-random)
3426             action=${opt%%-random}
3427             do_random ${action#--} $COMPONENT_LIST
3428         ;;
3429         --enable-random=*|--disable-random=*)
3430             action=${opt%%-random=*}
3431             do_random ${action#--} $optval
3432         ;;
3433         --enable-*=*|--disable-*=*)
3434             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3435             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3436             eval list=\$$(toupper $thing)_LIST
3437             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3438             list=$(filter "$name" $list)
3439             [ "$list" = "" ] && warn "Option $opt did not match anything"
3440             $action $list
3441         ;;
3442         --enable-?*|--disable-?*)
3443             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3444             if is_in $option $COMPONENT_LIST; then
3445                 test $action = disable && action=unset
3446                 eval $action \$$(toupper ${option%s})_LIST
3447             elif is_in $option $CMDLINE_SELECT; then
3448                 $action $option
3449             else
3450                 die_unknown $opt
3451             fi
3452         ;;
3453         --list-*)
3454             NAME="${opt#--list-}"
3455             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3456             NAME=${NAME%s}
3457             eval show_list $NAME \$$(toupper $NAME)_LIST
3458         ;;
3459         --help|-h) show_help
3460         ;;
3461         --fatal-warnings) enable fatal_warnings
3462         ;;
3463         *)
3464             optname="${opt%%=*}"
3465             optname="${optname#--}"
3466             optname=$(echo "$optname" | sed 's/-/_/g')
3467             if is_in $optname $CMDLINE_SET; then
3468                 eval $optname='$optval'
3469             elif is_in $optname $CMDLINE_APPEND; then
3470                 append $optname "$optval"
3471             else
3472                 die_unknown $opt
3473             fi
3474         ;;
3475     esac
3476 done
3477
3478 for e in $env; do
3479     eval "export $e"
3480 done
3481
3482 disabled logging && logfile=/dev/null
3483
3484 # Disable all the library-specific components if the library itself
3485 # is disabled, see AVCODEC_LIST and following _LIST variables.
3486
3487 disable_components(){
3488     disabled ${1} && disable $(
3489         eval components="\$$(toupper ${1})_COMPONENTS"
3490         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3491     )
3492 }
3493
3494 map 'disable_components $v' $LIBRARY_LIST
3495
3496 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3497 set >> $logfile
3498
3499 test -n "$valgrind" && toolchain="valgrind-memcheck"
3500
3501 case "$toolchain" in
3502     *-asan)
3503         cc_default="${toolchain%-asan}"
3504         add_cflags  -fsanitize=address
3505         add_ldflags -fsanitize=address
3506     ;;
3507     *-msan)
3508         cc_default="${toolchain%-msan}"
3509         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3510         add_ldflags -fsanitize=memory
3511     ;;
3512     *-tsan)
3513         cc_default="${toolchain%-tsan}"
3514         add_cflags  -fsanitize=thread -pie
3515         add_ldflags -fsanitize=thread -pie
3516         case "$toolchain" in
3517             gcc-tsan)
3518                 add_cflags  -fPIC
3519                 add_ldflags -fPIC
3520                 ;;
3521         esac
3522     ;;
3523     *-usan)
3524         cc_default="${toolchain%-usan}"
3525         add_cflags  -fsanitize=undefined
3526         add_ldflags -fsanitize=undefined
3527     ;;
3528     valgrind-*)
3529         target_exec_default="valgrind"
3530         case "$toolchain" in
3531             valgrind-massif)
3532                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3533                 ;;
3534             valgrind-memcheck)
3535                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3536                 ;;
3537         esac
3538     ;;
3539     msvc)
3540         # Check whether the current MSVC version needs the C99 converter.
3541         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3542         # support enough of C99 to build ffmpeg. Default to the new
3543         # behaviour if the regexp was unable to match anything, since this
3544         # successfully parses the version number of existing supported
3545         # versions that require the converter (MSVC 2010 and 2012).
3546         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3547         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3548             cc_default="cl"
3549         else
3550             cc_default="c99wrap cl"
3551         fi
3552         ld_default="$source_path/compat/windows/mslink"
3553         nm_default="dumpbin -symbols"
3554         ar_default="lib"
3555         case "$arch" in
3556         arm*)
3557             as_default="armasm"
3558             ;;
3559         esac
3560         target_os_default="win32"
3561         # Use a relative path for TMPDIR. This makes sure all the
3562         # ffconf temp files are written with a relative path, avoiding
3563         # issues with msys/win32 path conversion for MSVC parameters
3564         # such as -Fo<file> or -out:<file>.
3565         TMPDIR=.
3566     ;;
3567     icl)
3568         cc_default="icl"
3569         ld_default="xilink"
3570         nm_default="dumpbin -symbols"
3571         ar_default="xilib"
3572         target_os_default="win32"
3573         TMPDIR=.
3574     ;;
3575     gcov)
3576         add_cflags  -fprofile-arcs -ftest-coverage
3577         add_ldflags -fprofile-arcs -ftest-coverage
3578     ;;
3579     llvm-cov)
3580         add_cflags -fprofile-arcs -ftest-coverage
3581         add_ldflags --coverage
3582     ;;
3583     hardened)
3584         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3585         add_cflags   -fno-strict-overflow -fstack-protector-all
3586         add_ldflags  -Wl,-z,relro -Wl,-z,now
3587         add_cflags   -fPIE
3588         add_ldexeflags -fPIE -pie
3589     ;;
3590     ?*)
3591         die "Unknown toolchain $toolchain"
3592     ;;
3593 esac
3594
3595 test -n "$cross_prefix" && enable cross_compile
3596
3597 if enabled cross_compile; then
3598     test -n "$arch" && test -n "$target_os" ||
3599         die "Must specify target arch and OS when cross-compiling"
3600 fi
3601
3602 ar_default="${cross_prefix}${ar_default}"
3603 cc_default="${cross_prefix}${cc_default}"
3604 cxx_default="${cross_prefix}${cxx_default}"
3605 nm_default="${cross_prefix}${nm_default}"
3606 pkg_config_default="${cross_prefix}${pkg_config_default}"
3607 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3608     ranlib_default="${cross_prefix}${ranlib_default} -D"
3609 else
3610     ranlib_default="${cross_prefix}${ranlib_default}"
3611 fi
3612 strip_default="${cross_prefix}${strip_default}"
3613 windres_default="${cross_prefix}${windres_default}"
3614
3615 sysinclude_default="${sysroot}/usr/include"
3616
3617 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3618     target_exec target_os yasmexe
3619 enabled cross_compile || host_cc_default=$cc
3620 set_default host_cc
3621
3622 pkg_config_fail_message=""
3623 if ! $pkg_config --version >/dev/null 2>&1; then
3624     warn "$pkg_config not found, library detection may fail."
3625     pkg_config=false
3626 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3627     pkg_config_fail_message="
3628 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3629 fi
3630
3631 if test $doxygen != $doxygen_default && \
3632   ! $doxygen --version >/dev/null 2>&1; then
3633     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3634 fi
3635
3636 exesuf() {
3637     case $1 in
3638         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3639     esac
3640 }
3641
3642 EXESUF=$(exesuf $target_os)
3643 HOSTEXESUF=$(exesuf $host_os)
3644
3645 # set temporary file name
3646 : ${TMPDIR:=$TEMPDIR}
3647 : ${TMPDIR:=$TMP}
3648 : ${TMPDIR:=/tmp}
3649
3650 if [ -n "$tempprefix" ] ; then
3651     mktemp(){
3652         echo $tempprefix.${HOSTNAME}.${UID}
3653     }
3654 elif ! check_cmd mktemp -u XXXXXX; then
3655     # simple replacement for missing mktemp
3656     # NOT SAFE FOR GENERAL USE
3657     mktemp(){
3658         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3659     }
3660 fi
3661
3662 tmpfile(){
3663     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3664         (set -C; exec > $tmp) 2>/dev/null ||
3665         die "Unable to create temporary file in $TMPDIR."
3666     append TMPFILES $tmp
3667     eval $1=$tmp
3668 }
3669
3670 trap 'rm -f -- $TMPFILES' EXIT
3671
3672 tmpfile TMPASM .asm
3673 tmpfile TMPC   .c
3674 tmpfile TMPCPP .cpp
3675 tmpfile TMPE   $EXESUF
3676 tmpfile TMPH   .h
3677 tmpfile TMPM   .m
3678 tmpfile TMPO   .o
3679 tmpfile TMPS   .S
3680 tmpfile TMPSH  .sh
3681 tmpfile TMPV   .ver
3682
3683 unset -f mktemp
3684
3685 chmod +x $TMPE
3686
3687 # make sure we can execute files in $TMPDIR
3688 cat > $TMPSH 2>> $logfile <<EOF
3689 #! /bin/sh
3690 EOF
3691 chmod +x $TMPSH >> $logfile 2>&1
3692 if ! $TMPSH >> $logfile 2>&1; then
3693     cat <<EOF
3694 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3695 variable to another directory and make sure that it is not mounted noexec.
3696 EOF
3697     die "Sanity test failed."
3698 fi
3699
3700 armasm_flags(){
3701     for flag; do
3702         case $flag in
3703             # Filter out MSVC cl.exe options from cflags that shouldn't
3704             # be passed to gas-preprocessor
3705             -M[TD]*)                                            ;;
3706             *)                  echo $flag                      ;;
3707         esac
3708    done
3709 }
3710
3711 ccc_flags(){
3712     for flag; do
3713         case $flag in
3714             -std=c99)           echo -c99                       ;;
3715             -mcpu=*)            echo -arch ${flag#*=}           ;;
3716             -mieee)             echo -ieee                      ;;
3717             -O*|-fast)          echo $flag                      ;;
3718             -fno-math-errno)    echo -assume nomath_errno       ;;
3719             -g)                 echo -g3                        ;;
3720             -Wall)              echo -msg_enable level2         ;;
3721             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3722             -Wl,*)              echo $flag                      ;;
3723             -f*|-W*)                                            ;;
3724             *)                  echo $flag                      ;;
3725         esac
3726    done
3727 }
3728
3729 cparser_flags(){
3730     for flag; do
3731         case $flag in
3732             -Wno-switch)             echo -Wno-switch-enum ;;
3733             -Wno-format-zero-length) ;;
3734             -Wdisabled-optimization) ;;
3735             -Wno-pointer-sign)       echo -Wno-other ;;
3736             *)                       echo $flag ;;
3737         esac
3738     done
3739 }
3740
3741 msvc_common_flags(){
3742     for flag; do
3743         case $flag in
3744             # In addition to specifying certain flags under the compiler
3745             # specific filters, they must be specified here as well or else the
3746             # generic catch all at the bottom will print the original flag.
3747             -Wall)                ;;
3748             -std=c99)             ;;
3749             # Common flags
3750             -fomit-frame-pointer) ;;
3751             -g)                   echo -Z7 ;;
3752             -fno-math-errno)      ;;
3753             -fno-common)          ;;
3754             -fno-signed-zeros)    ;;
3755             -fPIC)                ;;
3756             -mthumb)              ;;
3757             -march=*)             ;;
3758             -lz)                  echo zlib.lib ;;
3759             -lavifil32)           echo vfw32.lib ;;
3760             -lavicap32)           echo vfw32.lib user32.lib ;;
3761             -lx264)               echo libx264.lib ;;
3762             -l*)                  echo ${flag#-l}.lib ;;
3763             -LARGEADDRESSAWARE)   echo $flag ;;
3764             -L*)                  echo -libpath:${flag#-L} ;;
3765             *)                    echo $flag ;;
3766         esac
3767     done
3768 }
3769
3770 msvc_flags(){
3771     msvc_common_flags "$@"
3772     for flag; do
3773         case $flag in
3774             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3775                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3776                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3777                                        -wd4307 \
3778                                        -wd4273 -wd4554 -wd4701 ;;
3779         esac
3780     done
3781 }
3782
3783 icl_flags(){
3784     msvc_common_flags "$@"
3785     for flag; do
3786         case $flag in
3787             # Despite what Intel's documentation says -Wall, which is supported
3788             # on Windows, does enable remarks so disable them here.
3789             -Wall)                echo $flag -Qdiag-disable:remark ;;
3790             -std=c99)             echo -Qstd=c99 ;;
3791             -flto)                echo -ipo ;;
3792         esac
3793     done
3794 }
3795
3796 icc_flags(){
3797     for flag; do
3798         case $flag in
3799             -flto)                echo -ipo ;;
3800             *)                    echo $flag ;;
3801         esac
3802     done
3803 }
3804
3805 pgi_flags(){
3806     for flag; do
3807         case $flag in
3808             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3809             -fomit-frame-pointer) echo -Mnoframe ;;
3810             -g)                   echo -gopt ;;
3811             *)                    echo $flag ;;
3812         esac
3813     done
3814 }
3815
3816 suncc_flags(){
3817     for flag; do
3818         case $flag in
3819             -march=*|-mcpu=*)
3820                 case "${flag#*=}" in
3821                     native)                   echo -xtarget=native       ;;
3822                     v9|niagara)               echo -xarch=sparc          ;;
3823                     ultrasparc)               echo -xarch=sparcvis       ;;
3824                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3825                     i586|pentium)             echo -xchip=pentium        ;;
3826                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3827                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3828                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3829                     pentium4*)          echo -xtarget=pentium4           ;;
3830                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3831                     *-sse3)             echo -xarch=sse3                 ;;
3832                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3833                     bonnell)                   echo -xarch=ssse3         ;;
3834                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3835                     westmere)                  echo -xtarget=westmere    ;;
3836                     silvermont)                echo -xarch=sse4_2        ;;
3837                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3838                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3839                                                echo -xarch=avx           ;;
3840                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3841                     btver1)                    echo -xarch=amdsse4a      ;;
3842                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3843                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3844                     k8|opteron|athlon64|athlon-fx)
3845                                                echo -xarch=sse2a         ;;
3846                     athlon*)                   echo -xarch=pentium_proa  ;;
3847                 esac
3848                 ;;
3849             -std=c99)             echo -xc99              ;;
3850             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3851             -fPIC)                echo -KPIC -xcode=pic32 ;;
3852             -W*,*)                echo $flag              ;;
3853             -f*-*|-W*|-mimpure-text)                      ;;
3854             -shared)              echo -G                 ;;
3855             *)                    echo $flag              ;;
3856         esac
3857     done
3858 }
3859
3860 tms470_flags(){
3861     for flag; do
3862         case $flag in
3863             -march=*|-mcpu=*)
3864                 case "${flag#*=}" in
3865                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3866                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3867                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3868                     armv6*|arm11*)          echo -mv=6   ;;
3869                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3870                                             echo -mv=5e  ;;
3871                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3872                 esac
3873                 ;;
3874             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3875             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3876             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3877             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3878             -msoft-float)   echo --float_support=vfplib       ;;
3879             -O[0-3]|-mf=*)  echo $flag                        ;;
3880             -g)             echo -g -mn                       ;;
3881             -pds=*)         echo $flag                        ;;
3882             -D*|-I*)        echo $flag                        ;;
3883             --gcc|--abi=*)  echo $flag                        ;;
3884             -me)            echo $flag                        ;;
3885         esac
3886     done
3887 }
3888
3889 probe_cc(){
3890     pfx=$1
3891     _cc=$2
3892     first=$3
3893
3894     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3895     unset _ld_o _ldflags _ld_lib _ld_path
3896     unset _depflags _DEPCMD _DEPFLAGS
3897     _flags_filter=echo
3898
3899     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3900         true # no-op to avoid reading stdin in following checks
3901     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3902         _type=llvm_gcc
3903         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3904         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3905         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3906         _cflags_speed='-O3'
3907         _cflags_size='-Os'
3908     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3909         _type=gcc
3910         gcc_version=$($_cc --version | head -n1)
3911         gcc_basever=$($_cc -dumpversion)
3912         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3913         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3914         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3915         case $gcc_basever in
3916             2) ;;
3917             2.*) ;;
3918             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3919         esac
3920         if [ "$first" = true ]; then
3921             case $gcc_basever in
3922                 4.2*)
3923                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3924             esac
3925         fi
3926         _cflags_speed='-O3'
3927         _cflags_size='-Os'
3928     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3929         _type=icc
3930         _ident=$($_cc --version | head -n1)
3931         _depflags='-MMD'
3932         _cflags_speed='-O3'
3933         _cflags_size='-Os'
3934         _cflags_noopt='-O1'
3935         _flags_filter=icc_flags
3936     elif $_cc -v 2>&1 | grep -q xlc; then
3937         _type=xlc
3938         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3939         _cflags_speed='-O5'
3940         _cflags_size='-O5 -qcompact'
3941     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3942         _type=ccc
3943         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3944         _DEPFLAGS='-M'
3945         _cflags_speed='-fast'
3946         _cflags_size='-O1'
3947         _flags_filter=ccc_flags
3948     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3949         test -d "$sysroot" || die "No valid sysroot specified."
3950         _type=armcc
3951         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3952         armcc_conf="$PWD/armcc.conf"
3953         $_cc --arm_linux_configure                 \
3954              --arm_linux_config_file="$armcc_conf" \
3955              --configure_sysroot="$sysroot"        \
3956              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3957              die "Error creating armcc configuration file."
3958         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3959         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3960         as_default="${cross_prefix}gcc"
3961         _depflags='-MMD'
3962         _cflags_speed='-O3'
3963         _cflags_size='-Os'
3964     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3965         _type=tms470
3966         _ident=$($_cc -version | head -n1 | tr -s ' ')
3967         _flags='--gcc --abi=eabi -me'
3968         _cc_e='-ppl -fe=$@'
3969         _cc_o='-fe=$@'
3970         _depflags='-ppa -ppd=$(@:.o=.d)'
3971         _cflags_speed='-O3 -mf=5'
3972         _cflags_size='-O3 -mf=2'
3973         _flags_filter=tms470_flags
3974     elif $_cc -v 2>&1 | grep -q clang; then
3975         _type=clang
3976         _ident=$($_cc --version 2>/dev/null | head -n1)
3977         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3978         _cflags_speed='-O3'
3979         _cflags_size='-Os'
3980     elif $_cc -V 2>&1 | grep -q Sun; then
3981         _type=suncc
3982         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3983         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3984         _DEPFLAGS='-xM1 -xc99'
3985         _ldflags='-std=c99'
3986         _cflags_speed='-O5'
3987         _cflags_size='-O5 -xspace'
3988         _flags_filter=suncc_flags
3989     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3990         _type=pathscale
3991         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3992         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3993         _cflags_speed='-O2'
3994         _cflags_size='-Os'
3995         _flags_filter='filter_out -Wdisabled-optimization'
3996     elif $_cc -v 2>&1 | grep -q Open64; then
3997         _type=open64
3998         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3999         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4000         _cflags_speed='-O2'
4001         _cflags_size='-Os'
4002         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4003     elif $_cc -V 2>&1 | grep -q Portland; then
4004         _type=pgi
4005         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4006         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4007         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4008         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4009         _cflags_noopt="-O"
4010         _flags_filter=pgi_flags
4011     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4012         _type=armasm
4013         _ident=$($_cc | head -n1)
4014         # 4509: "This form of conditional instruction is deprecated"
4015         _flags="-nologo -ignore 4509"
4016         _flags_filter=armasm_flags
4017     elif $_cc 2>&1 | grep -q Intel; then
4018         _type=icl
4019         _ident=$($_cc 2>&1 | head -n1)
4020         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4021         # Not only is O3 broken on 13.x+ but it is slower on all previous
4022         # versions (tested) as well.
4023         _cflags_speed="-O2"
4024         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4025         if $_cc 2>&1 | grep -q Linker; then
4026             _ld_o='-out:$@'
4027         else
4028             _ld_o='-Fe$@'
4029         fi
4030         _cc_o='-Fo$@'
4031         _cc_e='-P'
4032         _flags_filter=icl_flags
4033         _ld_lib='lib%.a'
4034         _ld_path='-libpath:'
4035         # -Qdiag-error to make icl error when seeing certain unknown arguments
4036         _flags='-nologo -Qdiag-error:4044,10157'
4037         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4038         # with MSVC which enables it by default.
4039         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4040         disable stripping
4041     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4042         _type=msvc
4043         _ident=$($_cc 2>&1 | head -n1)
4044         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4045         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4046         _cflags_speed="-O2"
4047         _cflags_size="-O1"
4048         if $_cc -nologo- 2>&1 | grep -q Linker; then
4049             _ld_o='-out:$@'
4050         else
4051             _ld_o='-Fe$@'
4052         fi
4053         _cc_o='-Fo$@'
4054         _cc_e='-P -Fi$@'
4055         _flags_filter=msvc_flags
4056         _ld_lib='lib%.a'
4057         _ld_path='-libpath:'
4058         _flags='-nologo'
4059         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4060         disable stripping
4061     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4062         _type=cparser
4063         _ident=$($_cc --version | head -n1)
4064         _depflags='-MMD'
4065         _cflags_speed='-O4'
4066         _cflags_size='-O2'
4067         _flags_filter=cparser_flags
4068     fi
4069
4070     eval ${pfx}_type=\$_type
4071     eval ${pfx}_ident=\$_ident
4072 }
4073
4074 set_ccvars(){
4075     eval ${1}_C=\${_cc_c-\${${1}_C}}
4076     eval ${1}_E=\${_cc_e-\${${1}_E}}
4077     eval ${1}_O=\${_cc_o-\${${1}_O}}
4078
4079     if [ -n "$_depflags" ]; then
4080         eval ${1}_DEPFLAGS=\$_depflags
4081     else
4082         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4083         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4084         eval DEP${1}FLAGS=\$_flags
4085     fi
4086 }
4087
4088 probe_cc cc "$cc" "true"
4089 cflags_filter=$_flags_filter
4090 cflags_speed=$_cflags_speed
4091 cflags_size=$_cflags_size
4092 cflags_noopt=$_cflags_noopt
4093 add_cflags $_flags $_cflags
4094 cc_ldflags=$_ldflags
4095 set_ccvars CC
4096
4097 probe_cc hostcc "$host_cc"
4098 host_cflags_filter=$_flags_filter
4099 add_host_cflags  $_flags $_cflags
4100 set_ccvars HOSTCC
4101
4102 test -n "$cc_type" && enable $cc_type ||
4103     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4104
4105 : ${as_default:=$cc}
4106 : ${objcc_default:=$cc}
4107 : ${dep_cc_default:=$cc}
4108 : ${ld_default:=$cc}
4109 : ${host_ld_default:=$host_cc}
4110 set_default ar as objcc dep_cc ld ln_s host_ld windres
4111
4112 probe_cc as "$as"
4113 asflags_filter=$_flags_filter
4114 add_asflags $_flags $_cflags
4115 set_ccvars AS
4116
4117 probe_cc objcc "$objcc"
4118 objcflags_filter=$_flags_filter
4119 add_objcflags $_flags $_cflags
4120 set_ccvars OBJC
4121
4122 probe_cc ld "$ld"
4123 ldflags_filter=$_flags_filter
4124 add_ldflags $_flags $_ldflags
4125 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4126 LD_O=${_ld_o-$LD_O}
4127 LD_LIB=${_ld_lib-$LD_LIB}
4128 LD_PATH=${_ld_path-$LD_PATH}
4129
4130 probe_cc hostld "$host_ld"
4131 host_ldflags_filter=$_flags_filter
4132 add_host_ldflags $_flags $_ldflags
4133 HOSTLD_O=${_ld_o-$HOSTLD_O}
4134
4135 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4136     probe_cc depcc "$dep_cc"
4137     CCDEP=${_DEPCMD:-$DEPCMD}
4138     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4139     DEPCCFLAGS=$_flags
4140 fi
4141
4142 if $ar 2>&1 | grep -q Microsoft; then
4143     arflags="-nologo"
4144     ar_o='-out:$@'
4145 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4146     arflags="rq"
4147     ar_o='$@'
4148 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4149     arflags='-Xany -r -c'
4150     ar_o='$@'
4151 elif $ar 2>&1 | grep -q "\[D\] "; then
4152     arflags="rcD"
4153     ar_o='$@'
4154 else
4155     arflags="rc"
4156     ar_o='$@'
4157 fi
4158
4159 add_cflags $extra_cflags
4160 add_cxxflags $extra_cxxflags
4161 add_objcflags $extra_objcflags
4162 add_asflags $extra_cflags
4163
4164 if test -n "$sysroot"; then
4165     case "$cc_type" in
4166         gcc|llvm_gcc|clang)
4167             add_cppflags --sysroot="$sysroot"
4168             add_ldflags --sysroot="$sysroot"
4169 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4170             add_cppflags -isysroot "$sysroot"
4171             add_ldflags -isysroot "$sysroot"
4172         ;;
4173         tms470)
4174             add_cppflags -I"$sysinclude"
4175             add_ldflags  --sysroot="$sysroot"
4176         ;;
4177     esac
4178 fi
4179
4180 if test "$cpu" = host; then
4181     enabled cross_compile &&
4182         die "--cpu=host makes no sense when cross-compiling."
4183
4184     case "$cc_type" in
4185         gcc|llvm_gcc)
4186             check_native(){
4187                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4188                 sed -n "/cc1.*$1=/{
4189                             s/.*$1=\\([^ ]*\\).*/\\1/
4190                             p
4191                             q
4192                         }" $TMPE
4193             }
4194             cpu=$(check_native -march || check_native -mcpu)
4195         ;;
4196         clang)
4197             check_native(){
4198                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4199                 sed -n "/cc1.*-target-cpu /{
4200                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4201                             p
4202                             q
4203                         }" $TMPE
4204             }
4205             cpu=$(check_native -march)
4206         ;;
4207     esac
4208
4209     test "${cpu:-host}" = host &&
4210         die "--cpu=host not supported with compiler $cc"
4211 fi
4212
4213 # Deal with common $arch aliases
4214 case "$arch" in
4215     aarch64|arm64)
4216         arch="aarch64"
4217     ;;
4218     arm*|iPad*|iPhone*)
4219         arch="arm"
4220     ;;
4221     mips*|IP*)
4222         case "$arch" in
4223         *el)
4224             add_cppflags -EL
4225             add_ldflags -EL
4226         ;;
4227         *eb)
4228             add_cppflags -EB
4229             add_ldflags -EB
4230         ;;
4231         esac
4232         arch="mips"
4233     ;;
4234     parisc*|hppa*)
4235         arch="parisc"
4236     ;;
4237     "Power Macintosh"|ppc*|powerpc*)
4238         arch="ppc"
4239     ;;
4240     s390|s390x)
4241         arch="s390"
4242     ;;
4243     sh4|sh)
4244         arch="sh4"
4245     ;;
4246     sun4*|sparc*)
4247         arch="sparc"
4248     ;;
4249     tilegx|tile-gx)
4250         arch="tilegx"
4251     ;;
4252     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4253         arch="x86"
4254     ;;
4255 esac
4256
4257 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4258 enable $arch
4259
4260 # Add processor-specific flags
4261 if enabled aarch64; then
4262
4263     case $cpu in
4264         armv*)
4265             cpuflags="-march=$cpu"
4266         ;;
4267         *)
4268             cpuflags="-mcpu=$cpu"
4269         ;;
4270     esac
4271
4272 elif enabled alpha; then
4273
4274     cpuflags="-mcpu=$cpu"
4275
4276 elif enabled arm; then
4277
4278     check_arm_arch() {
4279         check_cpp_condition stddef.h \
4280             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4281             $cpuflags
4282     }
4283
4284     probe_arm_arch() {
4285         if   check_arm_arch 4;        then echo armv4
4286         elif check_arm_arch 4T;       then echo armv4t
4287         elif check_arm_arch 5;        then echo armv5
4288         elif check_arm_arch 5E;       then echo armv5e
4289         elif check_arm_arch 5T;       then echo armv5t
4290         elif check_arm_arch 5TE;      then echo armv5te
4291         elif check_arm_arch 5TEJ;     then echo armv5te
4292         elif check_arm_arch 6;        then echo armv6
4293         elif check_arm_arch 6J;       then echo armv6j
4294         elif check_arm_arch 6K;       then echo armv6k
4295         elif check_arm_arch 6Z;       then echo armv6z
4296         elif check_arm_arch 6ZK;      then echo armv6zk
4297         elif check_arm_arch 6T2;      then echo armv6t2
4298         elif check_arm_arch 7;        then echo armv7
4299         elif check_arm_arch 7A  7_A;  then echo armv7-a
4300         elif check_arm_arch 7S;       then echo armv7-a
4301         elif check_arm_arch 7R  7_R;  then echo armv7-r
4302         elif check_arm_arch 7M  7_M;  then echo armv7-m
4303         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4304         elif check_arm_arch 8A  8_A;  then echo armv8-a
4305         fi
4306     }
4307
4308     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4309
4310     case $cpu in
4311         armv*)
4312             cpuflags="-march=$cpu"
4313             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4314         ;;
4315         *)
4316             cpuflags="-mcpu=$cpu"
4317             case $cpu in
4318                 cortex-a*)                               subarch=armv7a  ;;
4319                 cortex-r*)                               subarch=armv7r  ;;
4320                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4321                 arm11*)                                  subarch=armv6   ;;
4322                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4323                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4324                 *)                             subarch=$(probe_arm_arch) ;;
4325             esac
4326         ;;
4327     esac
4328
4329     case "$subarch" in
4330         armv5t*)    enable fast_clz                ;;
4331         armv[6-8]*)
4332             enable fast_clz
4333             disabled fast_unaligned || enable fast_unaligned
4334             ;;
4335     esac
4336
4337 elif enabled avr32; then
4338
4339     case $cpu in
4340         ap7[02]0[0-2])
4341             subarch="avr32_ap"
4342             cpuflags="-mpart=$cpu"
4343         ;;
4344         ap)
4345             subarch="avr32_ap"
4346             cpuflags="-march=$cpu"
4347         ;;
4348         uc3[ab]*)
4349             subarch="avr32_uc"
4350             cpuflags="-mcpu=$cpu"
4351         ;;
4352         uc)
4353             subarch="avr32_uc"
4354             cpuflags="-march=$cpu"
4355         ;;
4356     esac
4357
4358 elif enabled bfin; then
4359
4360     cpuflags="-mcpu=$cpu"
4361
4362 elif enabled mips; then
4363
4364     cpuflags="-march=$cpu"
4365
4366     if [ "$cpu" != "generic" ]; then
4367         disable mips32r2
4368         disable mips32r5
4369         disable mips64r2
4370         disable mips32r6
4371         disable mips64r6
4372         disable loongson2
4373         disable loongson3
4374
4375         case $cpu in
4376             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4377                 enable mips32r2
4378                 disable msa
4379             ;;
4380             p5600|i6400|p6600)
4381                 disable mipsdsp
4382                 disable mipsdspr2
4383             ;;
4384             loongson*)
4385                 enable loongson2
4386                 enable loongson3
4387                 enable local_aligned_8 local_aligned_16 local_aligned_32
4388                 enable simd_align_16
4389                 enable fast_64bit
4390                 enable fast_clz
4391                 enable fast_cmov
4392                 enable fast_unaligned
4393                 disable aligned_stack
4394                 disable mipsfpu
4395                 disable mipsdsp
4396                 disable mipsdspr2
4397                 case $cpu in
4398                     loongson3*)
4399                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4400                     ;;
4401                     loongson2e)
4402                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4403                     ;;
4404                     loongson2f)
4405                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4406                     ;;
4407                 esac
4408             ;;
4409             *)
4410                 # Unknown CPU. Disable everything.
4411                 warn "unknown CPU. Disabling all MIPS optimizations."
4412                 disable mipsfpu
4413                 disable mipsdsp
4414                 disable mipsdspr2
4415                 disable msa
4416                 disable mmi
4417             ;;
4418         esac
4419
4420         case $cpu in
4421             24kc)
4422                 disable mipsfpu
4423                 disable mipsdsp
4424                 disable mipsdspr2
4425             ;;
4426             24kf*)
4427                 disable mipsdsp
4428                 disable mipsdspr2
4429             ;;
4430             24kec|34kc|1004kc)
4431                 disable mipsfpu
4432                 disable mipsdspr2
4433             ;;
4434             24kef*|34kf*|1004kf*)
4435                 disable mipsdspr2
4436             ;;
4437             74kc)
4438                 disable mipsfpu
4439             ;;
4440             p5600)
4441                 enable mips32r5
4442                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4443             ;;
4444             i6400)
4445                 enable mips64r6
4446                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4447             ;;
4448             p6600)
4449                 enable mips64r6
4450                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4451             ;;
4452         esac
4453     else
4454         # We do not disable anything. Is up to the user to disable the unwanted features.
4455         warn 'generic cpu selected'
4456     fi
4457
4458 elif enabled ppc; then
4459
4460     disable ldbrx
4461
4462     case $(tolower $cpu) in
4463         601|ppc601|powerpc601)
4464             cpuflags="-mcpu=601"
4465             disable altivec
4466         ;;
4467         603*|ppc603*|powerpc603*)
4468             cpuflags="-mcpu=603"
4469             disable altivec
4470         ;;
4471         604*|ppc604*|powerpc604*)
4472             cpuflags="-mcpu=604"
4473             disable altivec
4474         ;;
4475         g3|75*|ppc75*|powerpc75*)
4476             cpuflags="-mcpu=750"
4477             disable altivec
4478         ;;
4479         g4|745*|ppc745*|powerpc745*)
4480             cpuflags="-mcpu=7450"
4481             disable vsx
4482         ;;
4483         74*|ppc74*|powerpc74*)
4484             cpuflags="-mcpu=7400"
4485             disable vsx
4486         ;;
4487         g5|970|ppc970|powerpc970)
4488             cpuflags="-mcpu=970"
4489             disable vsx
4490         ;;
4491         power[3-6]*)
4492             cpuflags="-mcpu=$cpu"
4493             disable vsx
4494         ;;
4495         power[7-8]*)
4496             cpuflags="-mcpu=$cpu"
4497         ;;
4498         cell)
4499             cpuflags="-mcpu=cell"
4500             enable ldbrx
4501             disable vsx
4502         ;;
4503         e500mc)
4504             cpuflags="-mcpu=e500mc"
4505             disable altivec
4506         ;;
4507         e500v2)
4508             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4509             disable altivec
4510             disable dcbzl
4511         ;;
4512         e500)
4513             cpuflags="-mcpu=8540 -mhard-float"
4514             disable altivec
4515             disable dcbzl
4516         ;;
4517     esac
4518
4519 elif enabled sparc; then
4520
4521     case $cpu in
4522         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4523             cpuflags="-mcpu=$cpu"
4524         ;;
4525         ultrasparc*|niagara[234])
4526             cpuflags="-mcpu=$cpu"
4527         ;;
4528     esac
4529
4530 elif enabled x86; then
4531
4532     case $cpu in
4533         i[345]86|pentium)
4534             cpuflags="-march=$cpu"
4535             disable i686
4536             disable mmx
4537         ;;
4538         # targets that do NOT support nopl and conditional mov (cmov)
4539         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4540             cpuflags="-march=$cpu"
4541             disable i686
4542         ;;
4543         # targets that do support nopl and conditional mov (cmov)
4544         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4545         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4546         |amdfam10|barcelona|b[dt]ver*|znver*)
4547             cpuflags="-march=$cpu"
4548             enable i686
4549             enable fast_cmov
4550         ;;
4551         # targets that do support conditional mov but on which it's slow
4552         pentium4|pentium4m|prescott|nocona)
4553             cpuflags="-march=$cpu"
4554             enable i686
4555             disable fast_cmov
4556         ;;
4557     esac
4558
4559 fi
4560
4561 if [ "$cpu" != generic ]; then
4562     add_cflags  $cpuflags
4563     add_asflags $cpuflags
4564     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4565 fi
4566
4567 # compiler sanity check
4568 check_exec <<EOF
4569 int main(void){ return 0; }
4570 EOF
4571 if test "$?" != 0; then
4572     echo "$cc is unable to create an executable file."
4573     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4574         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4575         echo "Only do this if you know what cross compiling means."
4576     fi
4577     die "C compiler test failed."
4578 fi
4579
4580 add_cppflags -D_ISOC99_SOURCE
4581 add_cxxflags -D__STDC_CONSTANT_MACROS
4582 add_cxxflags -std=c++98
4583 check_cflags -std=c99
4584 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4585 #include <stdlib.h>
4586 EOF
4587 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4588 #include <stdlib.h>
4589 EOF
4590
4591 add_host_cppflags -D_ISOC99_SOURCE
4592 check_host_cflags -std=c99
4593 check_host_cflags -Wall
4594 check_host_cflags -O3
4595
4596 check_64bit(){
4597     arch32=$1
4598     arch64=$2
4599     expr=$3
4600     check_code cc "" "int test[2*($expr) - 1]" &&
4601         subarch=$arch64 || subarch=$arch32
4602 }
4603
4604 case "$arch" in
4605     aarch64|alpha|ia64)
4606         spic=$shared
4607     ;;
4608     mips)
4609         check_64bit mips mips64 '_MIPS_SIM > 1'
4610         spic=$shared
4611     ;;
4612     parisc)
4613         check_64bit parisc parisc64 'sizeof(void *) > 4'
4614         spic=$shared
4615     ;;
4616     ppc)
4617         check_64bit ppc ppc64 'sizeof(void *) > 4'
4618         spic=$shared
4619     ;;
4620     s390)
4621         check_64bit s390 s390x 'sizeof(void *) > 4'
4622         spic=$shared
4623     ;;
4624     sparc)
4625         check_64bit sparc sparc64 'sizeof(void *) > 4'
4626         spic=$shared
4627     ;;
4628     x86)
4629         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4630         # Treat x32 as x64 for now. Note it also needs spic=$shared
4631         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4632             subarch=x86_64
4633         if test "$subarch" = "x86_64"; then
4634             spic=$shared
4635         fi
4636     ;;
4637     ppc)
4638         check_cc <<EOF && subarch="ppc64"
4639         int test[(int)sizeof(char*) - 7];
4640 EOF
4641     ;;
4642 esac
4643
4644 enable $subarch
4645 enabled spic && enable_weak pic
4646
4647 # OS specific
4648 case $target_os in
4649     aix)
4650         SHFLAGS=-shared
4651         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4652         enabled shared && add_ldflags -Wl,-brtl
4653         ;;
4654     android)
4655         disable symver
4656         enable section_data_rel_ro
4657         SLIB_INSTALL_NAME='$(SLIBNAME)'
4658         SLIB_INSTALL_LINKS=
4659         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4660         ;;
4661     haiku)
4662         prefix_default="/boot/common"
4663         network_extralibs="-lnetwork"
4664         host_libs=
4665         ;;
4666     sunos)
4667         SHFLAGS='-shared -Wl,-h,$$(@F)'
4668         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4669         network_extralibs="-lsocket -lnsl"
4670         add_cppflags -D__EXTENSIONS__
4671         # When using suncc to build, the Solaris linker will mark
4672         # an executable with each instruction set encountered by
4673         # the Solaris assembler.  As our libraries contain their own
4674         # guards for processor-specific code, instead suppress
4675         # generation of the HWCAPS ELF section on Solaris x86 only.
4676         enabled_all suncc x86 &&
4677             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4678             add_ldflags -Wl,-M,mapfile
4679         nm_default='nm -P -g'
4680         version_script='-M'
4681         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4682         ;;
4683     netbsd)
4684         disable symver
4685         oss_indev_extralibs="-lossaudio"
4686         oss_outdev_extralibs="-lossaudio"
4687         enabled gcc || check_ldflags -Wl,-zmuldefs
4688         ;;
4689     openbsd|bitrig)
4690         disable symver
4691         SHFLAGS='-shared'
4692         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4693         SLIB_INSTALL_LINKS=
4694         oss_indev_extralibs="-lossaudio"
4695         oss_outdev_extralibs="-lossaudio"
4696         ;;
4697     dragonfly)
4698         disable symver
4699         ;;
4700     freebsd)
4701         ;;
4702     bsd/os)
4703         add_extralibs -lpoll -lgnugetopt
4704         strip="strip -d"
4705         ;;
4706     darwin)
4707         enabled ppc && add_asflags -force_cpusubtype_ALL
4708         install_name_dir_default='$(SHLIBDIR)'
4709         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4710         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4711         strip="${strip} -x"
4712         add_ldflags -Wl,-dynamic,-search_paths_first
4713         SLIBSUF=".dylib"
4714         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4715         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4716         objformat="macho"
4717         enabled x86_64 && objformat="macho64"
4718         enabled_any pic shared x86_64 ||
4719             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4720         check_header dispatch/dispatch.h &&
4721             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4722         version_script='-exported_symbols_list'
4723         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4724         ;;
4725     msys*)
4726         die "Native MSYS builds are discouraged, please use the MINGW environment."
4727         ;;
4728     mingw32*|mingw64*)
4729         if test $target_os = "mingw32ce"; then
4730             disable network
4731         else
4732             target_os=mingw32
4733         fi
4734         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4735         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4736         LIBTARGET=i386
4737         if enabled x86_64; then
4738             LIBTARGET="i386:x86-64"
4739         elif enabled arm; then
4740             LIBTARGET=arm-wince
4741         fi
4742         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4743         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4744         shlibdir_default="$bindir_default"
4745         SLIBPREF=""
4746         SLIBSUF=".dll"
4747         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4748         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4749         dlltool="${cross_prefix}dlltool"
4750         if check_cmd lib.exe -list; then
4751             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4752             if enabled x86_64; then
4753                 LIBTARGET=x64
4754             fi
4755         elif check_cmd $dlltool --version; then
4756             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4757         fi
4758         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4759         SLIB_INSTALL_LINKS=
4760         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4761         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4762         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4763         objformat="win32"
4764         ranlib=:
4765         enable dos_paths
4766         check_ldflags -Wl,--nxcompat,--dynamicbase
4767         # Lets work around some stupidity in binutils.
4768         # ld will strip relocations from executables even though we need them
4769         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4770         # however ld then forgets what the entry point should be (oops) so we
4771         # have to manually (re)set it.
4772         if enabled x86_32; then
4773             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4774         elif enabled x86_64; then
4775             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4776             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4777             # Set image base >4GB for extra entropy with HEASLR
4778             add_ldexeflags -Wl,--image-base,0x140000000
4779             append SHFLAGS -Wl,--image-base,0x180000000
4780         fi
4781         ;;
4782     win32|win64)
4783         disable symver
4784         if enabled shared; then
4785             # Link to the import library instead of the normal static library
4786             # for shared libs.
4787             LD_LIB='%.lib'
4788             # Cannot build both shared and static libs with MSVC or icl.
4789             disable static
4790         fi
4791         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4792         shlibdir_default="$bindir_default"
4793         SLIBPREF=""
4794         SLIBSUF=".dll"
4795         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4796         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4797         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4798         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4799         SLIB_INSTALL_LINKS=
4800         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4801         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4802         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4803         objformat="win32"
4804         ranlib=:
4805         enable dos_paths
4806         ;;
4807     cygwin*)
4808         target_os=cygwin
4809         shlibdir_default="$bindir_default"
4810         SLIBPREF="cyg"
4811         SLIBSUF=".dll"
4812         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4813         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4814         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4815         SLIB_INSTALL_LINKS=
4816         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4817         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4818         objformat="win32"
4819         enable dos_paths
4820         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4821         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4822         ;;
4823     *-dos|freedos|opendos)
4824         network_extralibs="-lsocket"
4825         objformat="coff"
4826         enable dos_paths
4827         add_cppflags -U__STRICT_ANSI__
4828         ;;
4829     linux)
4830         enable dv1394
4831         enable section_data_rel_ro
4832         ;;
4833     irix*)
4834         target_os=irix
4835         ranlib="echo ignoring ranlib"
4836         ;;
4837     os/2*)
4838         strip="lxlite -CS"
4839         objformat="aout"
4840         add_cppflags -D_GNU_SOURCE
4841         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4842         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4843         LIBSUF="_s.a"
4844         SLIBPREF=""
4845         SLIBSUF=".dll"
4846         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4847         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4848         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4849             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4850             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4851             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4852             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4853         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4854             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4855         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4856         SLIB_INSTALL_LINKS=
4857         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4858         enable dos_paths
4859         enable_weak os2threads
4860         ;;
4861     gnu/kfreebsd)
4862         add_cppflags -D_BSD_SOURCE
4863         ;;
4864     gnu)
4865         ;;
4866     qnx)
4867         add_cppflags -D_QNX_SOURCE
4868         network_extralibs="-lsocket"
4869         ;;
4870     symbian)
4871         SLIBSUF=".dll"
4872         enable dos_paths
4873         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4874         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4875         add_ldflags -Wl,--target1-abs,--no-undefined \
4876                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4877                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4878         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4879                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4880