lavfi/f_ebur128: relicense to LGPL
[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-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
230   --enable-libgme          enable Game Music Emu via libgme [no]
231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
235   --enable-libmodplug      enable ModPlug via libmodplug [no]
236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
237   --enable-libnut          enable NUT (de)muxing via libnut,
238                            native (de)muxer exists [no]
239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
241   --enable-libopencv       enable video filtering via libopencv [no]
242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
245   --enable-libopus         enable Opus de/encoding via libopus [no]
246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
253   --enable-libsoxr         enable Include libsoxr resampling [no]
254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
255   --enable-libssh          enable SFTP protocol via libssh [no]
256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
257   --enable-libtheora       enable Theora encoding via libtheora [no]
258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
260   --enable-libvidstab      enable video stabilization using vid.stab [no]
261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
263                            native implementation exists [no]
264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
266   --enable-libwebp         enable WebP encoding via libwebp [no]
267   --enable-libx264         enable H.264 encoding via x264 [no]
268   --enable-libx265         enable HEVC encoding via x265 [no]
269   --enable-libxavs         enable AVS encoding via xavs [no]
270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
274   --enable-libxvid         enable Xvid encoding via xvidcore,
275                            native MPEG-4/Xvid encoder exists [no]
276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
277   --enable-libzmq          enable message passing via libzmq [no]
278   --enable-libzvbi         enable teletext support via libzvbi [no]
279   --disable-lzma           disable lzma [autodetect]
280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
281   --enable-mediacodec      enable Android MediaCodec support [no]
282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
283   --enable-openal          enable OpenAL 1.1 capture support [no]
284   --enable-opencl          enable OpenCL code
285   --enable-opengl          enable OpenGL rendering [no]
286   --enable-openssl         enable openssl, needed for https support
287                            if gnutls is not used [no]
288   --disable-schannel       disable SChannel SSP, needed for TLS support on
289                            Windows if openssl and gnutls are not used [autodetect]
290   --disable-sdl2           disable sdl2 [autodetect]
291   --disable-securetransport disable Secure Transport, needed for TLS support
292                            on OSX if openssl and gnutls are not used [autodetect]
293   --enable-x11grab         enable X11 grabbing (legacy) [no]
294   --disable-xlib           disable xlib [autodetect]
295   --disable-zlib           disable zlib [autodetect]
296
297   The following libraries provide various hardware acceleration features:
298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
307   --enable-omx             enable OpenMAX IL code [no]
308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
313
314 Toolchain options:
315   --arch=ARCH              select architecture [$arch]
316   --cpu=CPU                select the minimum required CPU (affects
317                            instruction selection, may crash on older CPUs)
318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
319   --progs-suffix=SUFFIX    program name suffix []
320   --enable-cross-compile   assume a cross-compiler is used
321   --sysroot=PATH           root of cross-build tree
322   --sysinclude=PATH        location of cross-build system headers
323   --target-os=OS           compiler targets OS [$target_os]
324   --target-exec=CMD        command to run executables on target
325   --target-path=DIR        path to view of build directory on target
326   --target-samples=DIR     path to samples directory on target
327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
328   --toolchain=NAME         set tool defaults according to NAME
329   --nm=NM                  use nm tool NM [$nm_default]
330   --ar=AR                  use archive tool AR [$ar_default]
331   --as=AS                  use assembler AS [$as_default]
332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
333   --strip=STRIP            use strip tool STRIP [$strip_default]
334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
336   --cc=CC                  use C compiler CC [$cc_default]
337   --cxx=CXX                use C compiler CXX [$cxx_default]
338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
340   --ld=LD                  use linker LD [$ld_default]
341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
345   --host-cc=HOSTCC         use host C compiler HOSTCC
346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
348   --host-ld=HOSTLD         use host linker HOSTLD
349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
350   --host-libs=HLIBS        use libs HLIBS when linking for host
351   --host-os=OS             compiler host OS [$target_os]
352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
359   --extra-version=STRING   version string suffix []
360   --optflags=OPTFLAGS      override optimization-related compiler flags
361   --build-suffix=SUFFIX    library name suffix []
362   --enable-pic             build position-independent code
363   --enable-thumb           compile for Thumb instruction set
364   --enable-lto             use link-time optimization
365   --env="ENV=override"     override the environment variables
366
367 Advanced options (experts only):
368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
369   --custom-allocator=NAME  use a supported custom allocator
370   --disable-symver         disable symbol versioning
371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
372   --disable-safe-bitstream-reader
373                            disable buffer boundary checking in bitreaders
374                            (faster, but may crash)
375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
377
378 Optimization options (experts only):
379   --disable-asm            disable all assembly optimizations
380   --disable-altivec        disable AltiVec optimizations
381   --disable-vsx            disable VSX optimizations
382   --disable-power8         disable POWER8 optimizations
383   --disable-amd3dnow       disable 3DNow! optimizations
384   --disable-amd3dnowext    disable 3DNow! extended optimizations
385   --disable-mmx            disable MMX optimizations
386   --disable-mmxext         disable MMXEXT optimizations
387   --disable-sse            disable SSE optimizations
388   --disable-sse2           disable SSE2 optimizations
389   --disable-sse3           disable SSE3 optimizations
390   --disable-ssse3          disable SSSE3 optimizations
391   --disable-sse4           disable SSE4 optimizations
392   --disable-sse42          disable SSE4.2 optimizations
393   --disable-avx            disable AVX optimizations
394   --disable-xop            disable XOP optimizations
395   --disable-fma3           disable FMA3 optimizations
396   --disable-fma4           disable FMA4 optimizations
397   --disable-avx2           disable AVX2 optimizations
398   --disable-aesni          disable AESNI optimizations
399   --disable-armv5te        disable armv5te optimizations
400   --disable-armv6          disable armv6 optimizations
401   --disable-armv6t2        disable armv6t2 optimizations
402   --disable-vfp            disable VFP optimizations
403   --disable-neon           disable NEON optimizations
404   --disable-inline-asm     disable use of inline assembly
405   --disable-yasm           disable use of nasm/yasm assembly
406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
408   --disable-msa            disable MSA optimizations
409   --disable-mipsfpu        disable floating point MIPS optimizations
410   --disable-mmi            disable Loongson SIMD optimizations
411   --disable-fast-unaligned consider unaligned accesses slow
412
413 Developer options (useful when working on FFmpeg itself):
414   --disable-debug          disable debugging symbols
415   --enable-debug=LEVEL     set the debug level [$debuglevel]
416   --disable-optimizations  disable compiler optimizations
417   --enable-extra-warnings  enable more compiler warnings
418   --disable-stripping      disable stripping of executables and shared libraries
419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
420                            2 causes a slowdown at runtime.
421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
423                            leaks and errors, using the specified valgrind binary.
424                            Cannot be combined with --target-exec
425   --enable-ftrapv          Trap arithmetic overflows
426   --samples=PATH           location of test samples for FATE, if not set use
427                            \$FATE_SAMPLES at make invocation time.
428   --enable-neon-clobber-test check NEON registers for clobbering (should be
429                            used only for debugging purposes)
430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
431                            should be used only for debugging purposes)
432   --enable-random          randomly enable/disable components
433   --disable-random
434   --enable-random=LIST     randomly enable/disable specific components or
435   --disable-random=LIST    component groups. LIST is a comma-separated list
436                            of NAME[:PROB] entries where NAME is a component
437                            (group) and PROB the probability associated with
438                            NAME (default 0.5).
439   --random-seed=VALUE      seed value for --enable/disable-random
440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
441                            (only applies to --disable-optimizations builds)
442
443 NOTE: Object files are built at the place where configure is launched.
444 EOF
445   exit 0
446 }
447
448 quotes='""'
449 if test -t 1 && which tput >/dev/null 2>&1; then
450     ncolors=$(tput colors)
451     if test -n "$ncolors" && test $ncolors -ge 8; then
452         bold_color=$(tput bold)
453         warn_color=$(tput setaf 3)
454         error_color=$(tput setaf 1)
455         reset_color=$(tput sgr0)
456     fi
457     # 72 used instead of 80 since that's the default of pr
458     ncols=$(tput cols)
459 fi
460 : ${ncols:=72}
461
462 log(){
463     echo "$@" >> $logfile
464 }
465
466 log_file(){
467     log BEGIN $1
468     pr -n -t $1 >> $logfile
469     log END $1
470 }
471
472 warn(){
473     log "WARNING: $*"
474     WARNINGS="${WARNINGS}WARNING: $*\n"
475 }
476
477 die(){
478     log "$@"
479     echo "$error_color$bold_color$@$reset_color"
480     cat <<EOF
481
482 If you think configure made a mistake, make sure you are using the latest
483 version from Git.  If the latest version fails, report the problem to the
484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
485 EOF
486     if disabled logging; then
487         cat <<EOF
488 Rerun configure with logging enabled (do not use --disable-logging), and
489 include the log this produces with your report.
490 EOF
491     else
492         cat <<EOF
493 Include the log file "$logfile" produced by configure as this will help
494 solve the problem.
495 EOF
496     fi
497     exit 1
498 }
499
500 # Avoid locale weirdness, besides we really just want to translate ASCII.
501 toupper(){
502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
503 }
504
505 tolower(){
506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
507 }
508
509 c_escape(){
510     echo "$*" | sed 's/["\\]/\\\0/g'
511 }
512
513 sh_quote(){
514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
516     echo "$v"
517 }
518
519 cleanws(){
520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
521 }
522
523 filter(){
524     pat=$1
525     shift
526     for v; do
527         eval "case $v in $pat) echo $v ;; esac"
528     done
529 }
530
531 filter_out(){
532     pat=$1
533     shift
534     for v; do
535         eval "case $v in $pat) ;; *) echo $v ;; esac"
536     done
537 }
538
539 map(){
540     m=$1
541     shift
542     for v; do eval $m; done
543 }
544
545 add_suffix(){
546     suffix=$1
547     shift
548     for v; do echo ${v}${suffix}; done
549 }
550
551 set_all(){
552     value=$1
553     shift
554     for var in $*; do
555         eval $var=$value
556     done
557 }
558
559 set_weak(){
560     value=$1
561     shift
562     for var; do
563         eval : \${$var:=$value}
564     done
565 }
566
567 sanitize_var_name(){
568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
569 }
570
571 set_safe(){
572     var=$1
573     shift
574     eval $(sanitize_var_name "$var")='$*'
575 }
576
577 get_safe(){
578     eval echo \$$(sanitize_var_name "$1")
579 }
580
581 pushvar(){
582     for pvar in $*; do
583         eval level=\${${pvar}_level:=0}
584         eval ${pvar}_${level}="\$$pvar"
585         eval ${pvar}_level=$(($level+1))
586     done
587 }
588
589 popvar(){
590     for pvar in $*; do
591         eval level=\${${pvar}_level:-0}
592         test $level = 0 && continue
593         eval level=$(($level-1))
594         eval $pvar="\${${pvar}_${level}}"
595         eval ${pvar}_level=$level
596         eval unset ${pvar}_${level}
597     done
598 }
599
600 enable(){
601     set_all yes $*
602 }
603
604 disable(){
605     set_all no $*
606 }
607
608 enable_weak(){
609     set_weak yes $*
610 }
611
612 disable_weak(){
613     set_weak no $*
614 }
615
616 enable_safe(){
617     for var; do
618         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
619     done
620 }
621
622 disable_safe(){
623     for var; do
624         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
625     done
626 }
627
628 do_enable_deep(){
629     for var; do
630         enabled $var && continue
631         eval sel="\$${var}_select"
632         eval sgs="\$${var}_suggest"
633         pushvar var sgs
634         enable_deep $sel
635         popvar sgs
636         enable_deep_weak $sgs
637         popvar var
638     done
639 }
640
641 enable_deep(){
642     do_enable_deep $*
643     enable $*
644 }
645
646 enable_deep_weak(){
647     for var; do
648         disabled $var && continue
649         pushvar var
650         do_enable_deep $var
651         popvar var
652         enable_weak $var
653     done
654 }
655
656 enabled(){
657     test "${1#!}" = "$1" && op='=' || op=!=
658     eval test "x\$${1#!}" $op "xyes"
659 }
660
661 disabled(){
662     test "${1#!}" = "$1" && op='=' || op=!=
663     eval test "x\$${1#!}" $op "xno"
664 }
665
666 enabled_all(){
667     for opt; do
668         enabled $opt || return 1
669     done
670 }
671
672 disabled_all(){
673     for opt; do
674         disabled $opt || return 1
675     done
676 }
677
678 enabled_any(){
679     for opt; do
680         enabled $opt && return 0
681     done
682 }
683
684 disabled_any(){
685     for opt; do
686         disabled $opt && return 0
687     done
688     return 1
689 }
690
691 set_default(){
692     for opt; do
693         eval : \${$opt:=\$${opt}_default}
694     done
695 }
696
697 is_in(){
698     value=$1
699     shift
700     for var in $*; do
701         [ $var = $value ] && return 0
702     done
703     return 1
704 }
705
706 do_check_deps(){
707     for cfg; do
708         cfg="${cfg#!}"
709         enabled ${cfg}_checking && die "Circular dependency for $cfg."
710         disabled ${cfg}_checking && continue
711         enable ${cfg}_checking
712         append allopts $cfg
713
714         eval dep_all="\$${cfg}_deps"
715         eval dep_any="\$${cfg}_deps_any"
716         eval dep_sel="\$${cfg}_select"
717         eval dep_sgs="\$${cfg}_suggest"
718         eval dep_ifa="\$${cfg}_if"
719         eval dep_ifn="\$${cfg}_if_any"
720
721         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
722         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
723         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
724
725         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
726         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
727         enabled_all  $dep_all || disable $cfg
728         enabled_any  $dep_any || disable $cfg
729         disabled_any $dep_sel && disable $cfg
730
731         if enabled $cfg; then
732             enable_deep $dep_sel
733             enable_deep_weak $dep_sgs
734         fi
735
736         disable ${cfg}_checking
737     done
738 }
739
740 check_deps(){
741     unset allopts
742
743     do_check_deps "$@"
744
745     for cfg in $allopts; do
746         enabled $cfg || continue
747         eval dep_extralibs="\$${cfg}_extralibs"
748         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
749     done
750 }
751
752 print_config(){
753     pfx=$1
754     files=$2
755     shift 2
756     map 'eval echo "$v \${$v:-no}"' "$@" |
757     awk "BEGIN { split(\"$files\", files) }
758         {
759             c = \"$pfx\" toupper(\$1);
760             v = \$2;
761             sub(/yes/, 1, v);
762             sub(/no/,  0, v);
763             for (f in files) {
764                 file = files[f];
765                 if (file ~ /\\.h\$/) {
766                     printf(\"#define %s %d\\n\", c, v) >>file;
767                 } else if (file ~ /\\.asm\$/) {
768                     printf(\"%%define %s %d\\n\", c, v) >>file;
769                 } else if (file ~ /\\.mak\$/) {
770                     n = -v ? \"\" : \"!\";
771                     printf(\"%s%s=yes\\n\", n, c) >>file;
772                 } else if (file ~ /\\.texi\$/) {
773                     pre = -v ? \"\" : \"@c \";
774                     yesno = \$2;
775                     c2 = tolower(c);
776                     gsub(/_/, \"-\", c2);
777                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
778                 }
779             }
780         }"
781 }
782
783 print_enabled(){
784     suf=$1
785     shift
786     for v; do
787         enabled $v && printf "%s\n" ${v%$suf}
788     done
789 }
790
791 append(){
792     var=$1
793     shift
794     eval "$var=\"\$$var $*\""
795 }
796
797 prepend(){
798     var=$1
799     shift
800     eval "$var=\"$* \$$var\""
801 }
802
803 unique(){
804     var=$1
805     uniq_list=""
806     for tok in $(eval echo \$$var); do
807         uniq_list="$(filter_out $tok $uniq_list) $tok"
808     done
809     eval "$var=\"${uniq_list}\""
810 }
811
812 add_cppflags(){
813     append CPPFLAGS "$@"
814 }
815
816 add_cflags(){
817     append CFLAGS $($cflags_filter "$@")
818 }
819
820 add_cxxflags(){
821     append CXXFLAGS $($cflags_filter "$@")
822 }
823
824 add_asflags(){
825     append ASFLAGS $($asflags_filter "$@")
826 }
827
828 add_objcflags(){
829     append OBJCFLAGS $($objcflags_filter "$@")
830 }
831
832 add_ldflags(){
833     append LDFLAGS $($ldflags_filter "$@")
834 }
835
836 add_ldexeflags(){
837     append LDEXEFLAGS $($ldflags_filter "$@")
838 }
839
840 add_ldlibflags(){
841     append LDLIBFLAGS $($ldflags_filter "$@")
842 }
843
844 add_stripflags(){
845     append ASMSTRIPFLAGS "$@"
846 }
847
848 add_extralibs(){
849     prepend extralibs $($ldflags_filter "$@")
850 }
851
852 add_host_cppflags(){
853     append host_cppflags "$@"
854 }
855
856 add_host_cflags(){
857     append host_cflags $($host_cflags_filter "$@")
858 }
859
860 add_host_ldflags(){
861     append host_ldflags $($host_ldflags_filter "$@")
862 }
863
864 add_compat(){
865     append compat_objs $1
866     shift
867     map 'add_cppflags -D$v' "$@"
868 }
869
870 check_cmd(){
871     log "$@"
872     "$@" >> $logfile 2>&1
873 }
874
875 check_stat(){
876     log check_stat "$@"
877     stat "$1" >> $logfile 2>&1
878 }
879
880 cc_o(){
881     eval printf '%s\\n' $CC_O
882 }
883
884 cc_e(){
885     eval printf '%s\\n' $CC_E
886 }
887
888 check_cc(){
889     log check_cc "$@"
890     cat > $TMPC
891     log_file $TMPC
892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
893 }
894
895 check_cxx(){
896     log check_cxx "$@"
897     cat > $TMPCPP
898     log_file $TMPCPP
899     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
900 }
901
902 check_objcc(){
903     log check_objcc "$@"
904     cat > $TMPM
905     log_file $TMPM
906     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
907 }
908
909 check_cpp(){
910     log check_cpp "$@"
911     cat > $TMPC
912     log_file $TMPC
913     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
914 }
915
916 as_o(){
917     eval printf '%s\\n' $AS_O
918 }
919
920 check_as(){
921     log check_as "$@"
922     cat > $TMPS
923     log_file $TMPS
924     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
925 }
926
927 check_inline_asm(){
928     log check_inline_asm "$@"
929     name="$1"
930     code="$2"
931     shift 2
932     disable $name
933     check_cc "$@" <<EOF && enable $name
934 void foo(void){ __asm__ volatile($code); }
935 EOF
936 }
937
938 check_inline_asm_flags(){
939     log check_inline_asm_flags "$@"
940     name="$1"
941     code="$2"
942     flags=''
943     shift 2
944     while [ "$1" != "" ]; do
945       append flags $1
946       shift
947     done;
948     disable $name
949     cat > $TMPC <<EOF
950 void foo(void){ __asm__ volatile($code); }
951 EOF
952     log_file $TMPC
953     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
954     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
955 }
956
957 check_insn(){
958     log check_insn "$@"
959     check_inline_asm ${1}_inline "\"$2\""
960     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
961 }
962
963 check_yasm(){
964     log check_yasm "$@"
965     echo "$1" > $TMPS
966     log_file $TMPS
967     shift 1
968     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
969 }
970
971 ld_o(){
972     eval printf '%s\\n' $LD_O
973 }
974
975 check_ld(){
976     log check_ld "$@"
977     type=$1
978     shift 1
979     flags=$(filter_out '-l*|*.so' $@)
980     libs=$(filter '-l*|*.so' $@)
981     check_$type $($cflags_filter $flags) || return
982     flags=$($ldflags_filter $flags)
983     libs=$($ldflags_filter $libs)
984     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
985 }
986
987 print_include(){
988     hdr=$1
989     test "${hdr%.h}" = "${hdr}" &&
990         echo "#include $hdr"    ||
991         echo "#include <$hdr>"
992 }
993
994 check_code(){
995     log check_code "$@"
996     check=$1
997     headers=$2
998     code=$3
999     shift 3
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         echo "int main(void) { $code; return 0; }"
1005     } | check_$check "$@"
1006 }
1007
1008 check_cppflags(){
1009     log check_cppflags "$@"
1010     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1011 int x;
1012 EOF
1013 }
1014
1015 test_cflags(){
1016     log test_cflags "$@"
1017     set -- $($cflags_filter "$@")
1018     check_cc "$@" <<EOF
1019 int x;
1020 EOF
1021 }
1022
1023 check_cflags(){
1024     log check_cflags "$@"
1025     test_cflags "$@" && add_cflags "$@"
1026 }
1027
1028 check_cxxflags(){
1029     log check_cxxflags "$@"
1030     set -- $($cflags_filter "$@")
1031     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 test_objcflags(){
1037     log test_cflags "$@"
1038     set -- $($cflags_filter "$@")
1039     check_objcc "$@" <<EOF
1040 int x;
1041 EOF
1042 }
1043
1044 check_objcflags(){
1045     log check_cflags "$@"
1046     test_objcflags "$@" && add_objcflags "$@"
1047 }
1048
1049 test_ldflags(){
1050     log test_ldflags "$@"
1051     check_ld "cc" "$@" <<EOF
1052 int main(void){ return 0; }
1053 EOF
1054 }
1055
1056 check_ldflags(){
1057     log check_ldflags "$@"
1058     test_ldflags "$@" && add_ldflags "$@"
1059 }
1060
1061 test_stripflags(){
1062     log test_stripflags "$@"
1063     # call check_cc to get a fresh TMPO
1064     check_cc <<EOF
1065 int main(void) { return 0; }
1066 EOF
1067     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1068 }
1069
1070 check_stripflags(){
1071     log check_stripflags "$@"
1072     test_stripflags "$@" && add_stripflags "$@"
1073 }
1074
1075 check_header(){
1076     log check_header "$@"
1077     header=$1
1078     shift
1079     disable_safe $header
1080     check_cpp "$@" <<EOF && enable_safe $header
1081 #include <$header>
1082 int x;
1083 EOF
1084 }
1085
1086 check_header_objcc(){
1087     log check_header_objcc "$@"
1088     rm -f -- "$TMPO"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     {
1093        echo "#include <$header>"
1094        echo "int main(void) { return 0; }"
1095     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1096 }
1097
1098 check_func(){
1099     log check_func "$@"
1100     func=$1
1101     shift
1102     disable $func
1103     check_ld "cc" "$@" <<EOF && enable $func
1104 extern int $func();
1105 int main(void){ $func(); }
1106 EOF
1107 }
1108
1109 check_complexfunc(){
1110     log check_complexfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f * I"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <complex.h>
1118 #include <math.h>
1119 float foo(complex float f, complex float g) { return $func($args); }
1120 int main(void){ return (int) foo; }
1121 EOF
1122 }
1123
1124 check_mathfunc(){
1125     log check_mathfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <math.h>
1133 float foo(float f, float g) { return $func($args); }
1134 int main(void){ return (int) foo; }
1135 EOF
1136 }
1137
1138 check_func_headers(){
1139     log check_func_headers "$@"
1140     headers=$1
1141     funcs=$2
1142     shift 2
1143     {
1144         for hdr in $headers; do
1145             print_include $hdr
1146         done
1147         echo "#include <stdint.h>"
1148         for func in $funcs; do
1149             echo "long check_$func(void) { return (long) $func; }"
1150         done
1151         echo "int main(void) { int ret = 0;"
1152         # LTO could optimize out the test functions without this
1153         for func in $funcs; do
1154             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1155         done
1156         echo "return ret; }"
1157     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1158 }
1159
1160 check_class_headers_cpp(){
1161     log check_class_headers_cpp "$@"
1162     headers=$1
1163     classes=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             echo "#include <$hdr>"
1168         done
1169         echo "int main(void) { "
1170         i=1
1171         for class in $classes; do
1172             echo "$class obj$i;"
1173             i=$(expr $i + 1)
1174         done
1175         echo "return 0; }"
1176     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_cpp_condition(){
1180     log check_cpp_condition "$@"
1181     header=$1
1182     condition=$2
1183     shift 2
1184     check_cpp "$@" <<EOF
1185 #include <$header>
1186 #if !($condition)
1187 #error "unsatisfied condition: $condition"
1188 #endif
1189 EOF
1190 }
1191
1192 test_cflags_cpp(){
1193     log test_cflags_cpp "$@"
1194     flags=$1
1195     condition=$2
1196     shift 2
1197     set -- $($cflags_filter "$flags")
1198     check_cpp "$@" <<EOF
1199 #if !($condition)
1200 #error "unsatisfied condition: $condition"
1201 #endif
1202 EOF
1203 }
1204
1205 check_lib(){
1206     log check_lib "$@"
1207     header="$1"
1208     func="$2"
1209     shift 2
1210     check_header $header && check_func $func "$@" && add_extralibs "$@"
1211 }
1212
1213 check_lib2(){
1214     log check_lib2 "$@"
1215     headers="$1"
1216     funcs="$2"
1217     shift 2
1218     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1219 }
1220
1221 check_lib_cpp(){
1222     log check_lib_cpp "$@"
1223     headers="$1"
1224     classes="$2"
1225     shift 2
1226     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1227 }
1228
1229 check_pkg_config(){
1230     log check_pkg_config "$@"
1231     pkgandversion="$1"
1232     pkg="${1%% *}"
1233     headers="$2"
1234     funcs="$3"
1235     shift 3
1236     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1237     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1238     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1239     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1240         set_safe "${pkg}_cflags" $pkg_cflags   &&
1241         set_safe "${pkg}_libs"   $pkg_libs
1242 }
1243
1244 check_exec(){
1245     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1246 }
1247
1248 check_exec_crash(){
1249     code=$(cat)
1250
1251     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1252     # are safe but may not be available everywhere.  Thus we use
1253     # raise(SIGTERM) instead.  The check is run in a subshell so we
1254     # can redirect the "Terminated" message from the shell.  SIGBUS
1255     # is not defined by standard C so it is used conditionally.
1256
1257     (check_exec "$@") >> $logfile 2>&1 <<EOF
1258 #include <signal.h>
1259 static void sighandler(int sig){
1260     raise(SIGTERM);
1261 }
1262 int foo(void){
1263     $code
1264 }
1265 int (*func_ptr)(void) = foo;
1266 int main(void){
1267     signal(SIGILL, sighandler);
1268     signal(SIGFPE, sighandler);
1269     signal(SIGSEGV, sighandler);
1270 #ifdef SIGBUS
1271     signal(SIGBUS, sighandler);
1272 #endif
1273     return func_ptr();
1274 }
1275 EOF
1276 }
1277
1278 check_type(){
1279     log check_type "$@"
1280     headers=$1
1281     type=$2
1282     shift 2
1283     disable_safe "$type"
1284     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1285 }
1286
1287 check_struct(){
1288     log check_struct "$@"
1289     headers=$1
1290     struct=$2
1291     member=$3
1292     shift 3
1293     disable_safe "${struct}_${member}"
1294     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1295         enable_safe "${struct}_${member}"
1296 }
1297
1298 check_builtin(){
1299     log check_builtin "$@"
1300     name=$1
1301     headers=$2
1302     builtin=$3
1303     shift 3
1304     disable "$name"
1305     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1306 }
1307
1308 check_compile_assert(){
1309     log check_compile_assert "$@"
1310     name=$1
1311     headers=$2
1312     condition=$3
1313     shift 3
1314     disable "$name"
1315     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1316 }
1317
1318 require(){
1319     name="$1"
1320     header="$2"
1321     func="$3"
1322     shift 3
1323     check_lib $header $func "$@" || die "ERROR: $name not found"
1324 }
1325
1326 require2(){
1327     name="$1"
1328     headers="$2"
1329     func="$3"
1330     shift 3
1331     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1332 }
1333
1334 require_cpp(){
1335     name="$1"
1336     headers="$2"
1337     classes="$3"
1338     shift 3
1339     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1340 }
1341
1342 use_pkg_config(){
1343     pkg="$1"
1344     check_pkg_config "$@" || return 1
1345     add_cflags    $(get_safe "${pkg}_cflags")
1346     add_extralibs $(get_safe "${pkg}_libs")
1347 }
1348
1349 require_pkg_config(){
1350     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1351 }
1352
1353 require_libfreetype(){
1354     log require_libfreetype "$@"
1355     pkg="freetype2"
1356     check_cmd $pkg_config --exists --print-errors $pkg \
1357       || die "ERROR: $pkg not found"
1358     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1359     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1360     {
1361         echo "#include <ft2build.h>"
1362         echo "#include FT_FREETYPE_H"
1363         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1364         echo "int main(void) { return 0; }"
1365     } | check_ld "cc" $pkg_cflags $pkg_libs \
1366       && set_safe "${pkg}_cflags" $pkg_cflags \
1367       && set_safe "${pkg}_libs"   $pkg_libs \
1368       || die "ERROR: $pkg not found"
1369     add_cflags    $(get_safe "${pkg}_cflags")
1370     add_extralibs $(get_safe "${pkg}_libs")
1371 }
1372
1373 hostcc_e(){
1374     eval printf '%s\\n' $HOSTCC_E
1375 }
1376
1377 hostcc_o(){
1378     eval printf '%s\\n' $HOSTCC_O
1379 }
1380
1381 check_host_cc(){
1382     log check_host_cc "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1386 }
1387
1388 check_host_cpp(){
1389     log check_host_cpp "$@"
1390     cat > $TMPC
1391     log_file $TMPC
1392     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1393 }
1394
1395 check_host_cppflags(){
1396     log check_host_cppflags "$@"
1397     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cflags(){
1403     log check_host_cflags "$@"
1404     set -- $($host_cflags_filter "$@")
1405     check_host_cc "$@" <<EOF && append host_cflags "$@"
1406 int x;
1407 EOF
1408 }
1409
1410 check_host_cpp_condition(){
1411     log check_host_cpp_condition "$@"
1412     header=$1
1413     condition=$2
1414     shift 2
1415     check_host_cpp "$@" <<EOF
1416 #include <$header>
1417 #if !($condition)
1418 #error "unsatisfied condition: $condition"
1419 #endif
1420 EOF
1421 }
1422
1423 cp_if_changed(){
1424     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1425     mkdir -p "$(dirname $2)"
1426     $cp_f "$1" "$2"
1427 }
1428
1429 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1430 # system-dependent things.
1431
1432 AVCODEC_COMPONENTS="
1433     bsfs
1434     decoders
1435     encoders
1436     hwaccels
1437     parsers
1438 "
1439
1440 AVDEVICE_COMPONENTS="
1441     indevs
1442     outdevs
1443 "
1444 AVFILTER_COMPONENTS="
1445     filters
1446 "
1447 AVFORMAT_COMPONENTS="
1448     demuxers
1449     muxers
1450     protocols
1451 "
1452
1453 AVRESAMPLE_COMPONENTS=""
1454 AVUTIL_COMPONENTS=""
1455
1456 COMPONENT_LIST="
1457     $AVCODEC_COMPONENTS
1458     $AVDEVICE_COMPONENTS
1459     $AVFILTER_COMPONENTS
1460     $AVFORMAT_COMPONENTS
1461     $AVRESAMPLE_COMPONENTS
1462     $AVUTIL_COMPONENTS
1463 "
1464
1465 EXAMPLE_LIST="
1466     avio_dir_cmd_example
1467     avio_reading_example
1468     decoding_encoding_example
1469     demuxing_decoding_example
1470     extract_mvs_example
1471     filter_audio_example
1472     filtering_audio_example
1473     filtering_video_example
1474     http_multiclient_example
1475     metadata_example
1476     muxing_example
1477     qsvdec_example
1478     remuxing_example
1479     resampling_audio_example
1480     scaling_video_example
1481     transcode_aac_example
1482     transcoding_example
1483 "
1484
1485 EXTERNAL_LIBRARY_LIST="
1486     avisynth
1487     bzlib
1488     chromaprint
1489     crystalhd
1490     decklink
1491     frei0r
1492     gcrypt
1493     gmp
1494     gnutls
1495     iconv
1496     jni
1497     ladspa
1498     libass
1499     libbluray
1500     libbs2b
1501     libcaca
1502     libcdio
1503     libcelt
1504     libdc1394
1505     libfdk_aac
1506     libflite
1507     libfontconfig
1508     libfreetype
1509     libfribidi
1510     libgme
1511     libgsm
1512     libiec61883
1513     libilbc
1514     libkvazaar
1515     libmodplug
1516     libmp3lame
1517     libnut
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libopencv
1521     libopenh264
1522     libopenjpeg
1523     libopenmpt
1524     libopus
1525     libpulse
1526     librtmp
1527     librubberband
1528     libschroedinger
1529     libshine
1530     libsmbclient
1531     libsnappy
1532     libsoxr
1533     libspeex
1534     libssh
1535     libtesseract
1536     libtheora
1537     libtwolame
1538     libv4l2
1539     libvidstab
1540     libvo_amrwbenc
1541     libvorbis
1542     libvpx
1543     libwavpack
1544     libwebp
1545     libx264
1546     libx265
1547     libxavs
1548     libxcb
1549     libxcb_shm
1550     libxcb_shape
1551     libxcb_xfixes
1552     libxvid
1553     libzimg
1554     libzmq
1555     libzvbi
1556     lzma
1557     mediacodec
1558     netcdf
1559     openal
1560     opencl
1561     opengl
1562     openssl
1563     schannel
1564     sdl
1565     sdl2
1566     securetransport
1567     videotoolbox
1568     x11grab
1569     xlib
1570     zlib
1571 "
1572
1573 HWACCEL_LIBRARY_LIST="
1574     audiotoolbox
1575     cuda
1576     cuvid
1577     d3d11va
1578     dxva2
1579     libmfx
1580     libnpp
1581     mmal
1582     nvenc
1583     omx
1584     vaapi
1585     vda
1586     vdpau
1587     videotoolbox_hwaccel
1588     xvmc
1589 "
1590
1591 DOCUMENT_LIST="
1592     doc
1593     htmlpages
1594     manpages
1595     podpages
1596     txtpages
1597 "
1598
1599 FEATURE_LIST="
1600     ftrapv
1601     gray
1602     hardcoded_tables
1603     omx_rpi
1604     runtime_cpudetect
1605     safe_bitstream_reader
1606     shared
1607     small
1608     static
1609     swscale_alpha
1610 "
1611
1612 LIBRARY_LIST="
1613     avcodec
1614     avdevice
1615     avfilter
1616     avformat
1617     avresample
1618     avutil
1619     postproc
1620     swresample
1621     swscale
1622 "
1623
1624 LICENSE_LIST="
1625     gpl
1626     nonfree
1627     version3
1628 "
1629
1630 PROGRAM_LIST="
1631     ffplay
1632     ffprobe
1633     ffserver
1634     ffmpeg
1635 "
1636
1637 SUBSYSTEM_LIST="
1638     dct
1639     dwt
1640     error_resilience
1641     faan
1642     fast_unaligned
1643     fft
1644     lsp
1645     lzo
1646     mdct
1647     pixelutils
1648     network
1649     rdft
1650 "
1651
1652 CONFIG_LIST="
1653     $COMPONENT_LIST
1654     $DOCUMENT_LIST
1655     $EXAMPLE_LIST
1656     $EXTERNAL_LIBRARY_LIST
1657     $HWACCEL_LIBRARY_LIST
1658     $FEATURE_LIST
1659     $LICENSE_LIST
1660     $LIBRARY_LIST
1661     $PROGRAM_LIST
1662     $SUBSYSTEM_LIST
1663     fontconfig
1664     memalign_hack
1665     memory_poisoning
1666     neon_clobber_test
1667     pic
1668     pod2man
1669     raise_major
1670     thumb
1671     valgrind_backtrace
1672     xmm_clobber_test
1673 "
1674
1675 THREADS_LIST="
1676     pthreads
1677     os2threads
1678     w32threads
1679 "
1680
1681 ATOMICS_LIST="
1682     atomics_gcc
1683     atomics_suncc
1684     atomics_win32
1685 "
1686
1687 ARCH_LIST="
1688     aarch64
1689     alpha
1690     arm
1691     avr32
1692     avr32_ap
1693     avr32_uc
1694     bfin
1695     ia64
1696     m68k
1697     mips
1698     mips64
1699     parisc
1700     ppc
1701     ppc64
1702     s390
1703     sh4
1704     sparc
1705     sparc64
1706     tilegx
1707     tilepro
1708     tomi
1709     x86
1710     x86_32
1711     x86_64
1712 "
1713
1714 ARCH_EXT_LIST_ARM="
1715     armv5te
1716     armv6
1717     armv6t2
1718     armv8
1719     neon
1720     vfp
1721     vfpv3
1722     setend
1723 "
1724
1725 ARCH_EXT_LIST_MIPS="
1726     mipsfpu
1727     mips32r2
1728     mips32r5
1729     mips64r2
1730     mips32r6
1731     mips64r6
1732     mipsdsp
1733     mipsdspr2
1734     msa
1735 "
1736
1737 ARCH_EXT_LIST_LOONGSON="
1738     loongson2
1739     loongson3
1740     mmi
1741 "
1742
1743 ARCH_EXT_LIST_X86_SIMD="
1744     aesni
1745     amd3dnow
1746     amd3dnowext
1747     avx
1748     avx2
1749     fma3
1750     fma4
1751     mmx
1752     mmxext
1753     sse
1754     sse2
1755     sse3
1756     sse4
1757     sse42
1758     ssse3
1759     xop
1760 "
1761
1762 ARCH_EXT_LIST_PPC="
1763     altivec
1764     dcbzl
1765     ldbrx
1766     power8
1767     ppc4xx
1768     vsx
1769 "
1770
1771 ARCH_EXT_LIST_X86="
1772     $ARCH_EXT_LIST_X86_SIMD
1773     cpunop
1774     i686
1775 "
1776
1777 ARCH_EXT_LIST="
1778     $ARCH_EXT_LIST_ARM
1779     $ARCH_EXT_LIST_PPC
1780     $ARCH_EXT_LIST_X86
1781     $ARCH_EXT_LIST_MIPS
1782     $ARCH_EXT_LIST_LOONGSON
1783 "
1784
1785 ARCH_FEATURES="
1786     aligned_stack
1787     fast_64bit
1788     fast_clz
1789     fast_cmov
1790     local_aligned_8
1791     local_aligned_16
1792     local_aligned_32
1793     simd_align_16
1794 "
1795
1796 BUILTIN_LIST="
1797     atomic_cas_ptr
1798     atomic_compare_exchange
1799     machine_rw_barrier
1800     MemoryBarrier
1801     mm_empty
1802     rdtsc
1803     sarestart
1804     sem_timedwait
1805     sync_val_compare_and_swap
1806 "
1807 HAVE_LIST_CMDLINE="
1808     inline_asm
1809     symver
1810     yasm
1811 "
1812
1813 HAVE_LIST_PUB="
1814     bigendian
1815     fast_unaligned
1816 "
1817
1818 HEADERS_LIST="
1819     alsa_asoundlib_h
1820     altivec_h
1821     arpa_inet_h
1822     asm_types_h
1823     cdio_paranoia_h
1824     cdio_paranoia_paranoia_h
1825     cuda_h
1826     dispatch_dispatch_h
1827     dev_bktr_ioctl_bt848_h
1828     dev_bktr_ioctl_meteor_h
1829     dev_ic_bt8xx_h
1830     dev_video_bktr_ioctl_bt848_h
1831     dev_video_meteor_ioctl_meteor_h
1832     direct_h
1833     dirent_h
1834     dlfcn_h
1835     d3d11_h
1836     dxva_h
1837     ES2_gl_h
1838     gsm_h
1839     io_h
1840     mach_mach_time_h
1841     machine_ioctl_bt848_h
1842     machine_ioctl_meteor_h
1843     malloc_h
1844     opencv2_core_core_c_h
1845     openjpeg_2_1_openjpeg_h
1846     openjpeg_2_0_openjpeg_h
1847     openjpeg_1_5_openjpeg_h
1848     OpenGL_gl3_h
1849     poll_h
1850     sndio_h
1851     soundcard_h
1852     stdatomic_h
1853     sys_mman_h
1854     sys_param_h
1855     sys_resource_h
1856     sys_select_h
1857     sys_soundcard_h
1858     sys_time_h
1859     sys_un_h
1860     sys_videoio_h
1861     termios_h
1862     udplite_h
1863     unistd_h
1864     valgrind_valgrind_h
1865     windows_h
1866     winsock2_h
1867 "
1868
1869 INTRINSICS_LIST="
1870     intrinsics_neon
1871 "
1872
1873 COMPLEX_FUNCS="
1874     cabs
1875     cexp
1876 "
1877
1878 MATH_FUNCS="
1879     atanf
1880     atan2f
1881     cbrt
1882     cbrtf
1883     copysign
1884     cosf
1885     erf
1886     exp2
1887     exp2f
1888     expf
1889     hypot
1890     isfinite
1891     isinf
1892     isnan
1893     ldexpf
1894     llrint
1895     llrintf
1896     log2
1897     log2f
1898     log10f
1899     lrint
1900     lrintf
1901     powf
1902     rint
1903     round
1904     roundf
1905     sinf
1906     trunc
1907     truncf
1908 "
1909
1910 SYSTEM_FUNCS="
1911     access
1912     aligned_malloc
1913     arc4random
1914     clock_gettime
1915     closesocket
1916     CommandLineToArgvW
1917     CoTaskMemFree
1918     CryptGenRandom
1919     dlopen
1920     fcntl
1921     flt_lim
1922     fork
1923     getaddrinfo
1924     gethrtime
1925     getopt
1926     GetProcessAffinityMask
1927     GetProcessMemoryInfo
1928     GetProcessTimes
1929     getrusage
1930     GetSystemTimeAsFileTime
1931     gettimeofday
1932     glob
1933     glXGetProcAddress
1934     gmtime_r
1935     inet_aton
1936     isatty
1937     jack_port_get_latency_range
1938     kbhit
1939     LoadLibrary
1940     localtime_r
1941     lstat
1942     lzo1x_999_compress
1943     mach_absolute_time
1944     MapViewOfFile
1945     memalign
1946     mkstemp
1947     mmap
1948     mprotect
1949     nanosleep
1950     PeekNamedPipe
1951     posix_memalign
1952     pthread_cancel
1953     sched_getaffinity
1954     SetConsoleTextAttribute
1955     SetConsoleCtrlHandler
1956     setmode
1957     setrlimit
1958     Sleep
1959     strerror_r
1960     sysconf
1961     sysctl
1962     usleep
1963     UTGetOSTypeFromString
1964     VirtualAlloc
1965     wglGetProcAddress
1966 "
1967
1968 TOOLCHAIN_FEATURES="
1969     as_dn_directive
1970     as_func
1971     as_object_arch
1972     asm_mod_q
1973     attribute_may_alias
1974     attribute_packed
1975     ebp_available
1976     ebx_available
1977     gnu_as
1978     gnu_windres
1979     ibm_asm
1980     inline_asm_direct_symbol_refs
1981     inline_asm_labels
1982     inline_asm_nonlocal_labels
1983     pragma_deprecated
1984     rsync_contimeout
1985     symver_asm_label
1986     symver_gnu_asm
1987     vfp_args
1988     xform_asm
1989     xmm_clobbers
1990 "
1991
1992 TYPES_LIST="
1993     CONDITION_VARIABLE_Ptr
1994     socklen_t
1995     struct_addrinfo
1996     struct_group_source_req
1997     struct_ip_mreq_source
1998     struct_ipv6_mreq
1999     struct_msghdr_msg_flags
2000     struct_pollfd
2001     struct_rusage_ru_maxrss
2002     struct_sctp_event_subscribe
2003     struct_sockaddr_in6
2004     struct_sockaddr_sa_len
2005     struct_sockaddr_storage
2006     struct_stat_st_mtim_tv_nsec
2007     struct_v4l2_frmivalenum_discrete
2008 "
2009
2010 HAVE_LIST="
2011     $ARCH_EXT_LIST
2012     $(add_suffix _external $ARCH_EXT_LIST)
2013     $(add_suffix _inline   $ARCH_EXT_LIST)
2014     $ARCH_FEATURES
2015     $ATOMICS_LIST
2016     $BUILTIN_LIST
2017     $COMPLEX_FUNCS
2018     $HAVE_LIST_CMDLINE
2019     $HAVE_LIST_PUB
2020     $HEADERS_LIST
2021     $INTRINSICS_LIST
2022     $MATH_FUNCS
2023     $SYSTEM_FUNCS
2024     $THREADS_LIST
2025     $TOOLCHAIN_FEATURES
2026     $TYPES_LIST
2027     atomics_native
2028     dos_paths
2029     dxva2_lib
2030     dxva2api_cobj
2031     libc_msvcrt
2032     libdc1394_1
2033     libdc1394_2
2034     makeinfo
2035     makeinfo_html
2036     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2037     perl
2038     pod2man
2039     sdl2
2040     section_data_rel_ro
2041     texi2html
2042     threads
2043     vaapi_drm
2044     vaapi_x11
2045     vdpau_x11
2046     winrt
2047     xlib
2048 "
2049
2050 # options emitted with CONFIG_ prefix but not available on the command line
2051 CONFIG_EXTRA="
2052     aandcttables
2053     ac3dsp
2054     audio_frame_queue
2055     audiodsp
2056     blockdsp
2057     bswapdsp
2058     cabac
2059     dirac_parse
2060     dvprofile
2061     exif
2062     faandct
2063     faanidct
2064     fdctdsp
2065     flacdsp
2066     fmtconvert
2067     frame_thread_encoder
2068     g722dsp
2069     golomb
2070     gplv3
2071     h263dsp
2072     h264chroma
2073     h264dsp
2074     h264parse
2075     h264pred
2076     h264qpel
2077     hpeldsp
2078     huffman
2079     huffyuvdsp
2080     huffyuvencdsp
2081     idctdsp
2082     iirfilter
2083     imdct15
2084     intrax8
2085     iso_media
2086     ividsp
2087     jpegtables
2088     lgplv3
2089     libx262
2090     llauddsp
2091     llviddsp
2092     lpc
2093     lzf
2094     me_cmp
2095     mpeg_er
2096     mpegaudio
2097     mpegaudiodsp
2098     mpegvideo
2099     mpegvideoenc
2100     mss34dsp
2101     pixblockdsp
2102     qpeldsp
2103     qsv
2104     qsvdec
2105     qsvenc
2106     rangecoder
2107     riffdec
2108     riffenc
2109     rtpdec
2110     rtpenc_chain
2111     rv34dsp
2112     sinewin
2113     snappy
2114     srtp
2115     startcode
2116     texturedsp
2117     texturedspenc
2118     tpeldsp
2119     vaapi_encode
2120     vc1dsp
2121     videodsp
2122     vp3dsp
2123     vp56dsp
2124     vp8dsp
2125     vt_bt2020
2126     wma_freqs
2127     wmv2dsp
2128 "
2129
2130 CMDLINE_SELECT="
2131     $ARCH_EXT_LIST
2132     $CONFIG_LIST
2133     $HAVE_LIST_CMDLINE
2134     $THREADS_LIST
2135     asm
2136     cross_compile
2137     debug
2138     extra_warnings
2139     logging
2140     lto
2141     optimizations
2142     rpath
2143     stripping
2144 "
2145
2146 PATHS_LIST="
2147     bindir
2148     datadir
2149     docdir
2150     incdir
2151     libdir
2152     mandir
2153     pkgconfigdir
2154     prefix
2155     shlibdir
2156     install_name_dir
2157 "
2158
2159 CMDLINE_SET="
2160     $PATHS_LIST
2161     ar
2162     arch
2163     as
2164     assert_level
2165     build_suffix
2166     cc
2167     objcc
2168     cpu
2169     cross_prefix
2170     custom_allocator
2171     cxx
2172     dep_cc
2173     doxygen
2174     env
2175     extra_version
2176     gas
2177     host_cc
2178     host_cflags
2179     host_ld
2180     host_ldflags
2181     host_libs
2182     host_os
2183     install
2184     ld
2185     ln_s
2186     logfile
2187     malloc_prefix
2188     nm
2189     optflags
2190     pkg_config
2191     pkg_config_flags
2192     progs_suffix
2193     random_seed
2194     ranlib
2195     samples
2196     strip
2197     sws_max_filter_size
2198     sysinclude
2199     sysroot
2200     target_exec
2201     target_os
2202     target_path
2203     target_samples
2204     tempprefix
2205     toolchain
2206     valgrind
2207     yasmexe
2208 "
2209
2210 CMDLINE_APPEND="
2211     extra_cflags
2212     extra_cxxflags
2213     extra_objcflags
2214     host_cppflags
2215 "
2216
2217 # code dependency declarations
2218
2219 # architecture extensions
2220
2221 armv5te_deps="arm"
2222 armv6_deps="arm"
2223 armv6t2_deps="arm"
2224 armv8_deps="aarch64"
2225 neon_deps_any="aarch64 arm"
2226 intrinsics_neon_deps="neon"
2227 vfp_deps_any="aarch64 arm"
2228 vfpv3_deps="vfp"
2229 setend_deps="arm"
2230
2231 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2232
2233 loongson2_deps="mips"
2234 loongson3_deps="mips"
2235 mipsfpu_deps="mips"
2236 mipsdsp_deps="mips"
2237 mipsdspr2_deps="mips"
2238 mips32r2_deps="mips"
2239 mips32r5_deps="mips"
2240 mips32r6_deps="mips"
2241 mips64r2_deps="mips"
2242 mips64r6_deps="mips"
2243 msa_deps="mipsfpu"
2244 mmi_deps="mips"
2245
2246 altivec_deps="ppc"
2247 dcbzl_deps="ppc"
2248 ldbrx_deps="ppc"
2249 ppc4xx_deps="ppc"
2250 vsx_deps="altivec"
2251 power8_deps="vsx"
2252
2253 cpunop_deps="i686"
2254 x86_64_select="i686"
2255 x86_64_suggest="fast_cmov"
2256
2257 amd3dnow_deps="mmx"
2258 amd3dnowext_deps="amd3dnow"
2259 i686_deps="x86"
2260 mmx_deps="x86"
2261 mmxext_deps="mmx"
2262 sse_deps="mmxext"
2263 sse2_deps="sse"
2264 sse3_deps="sse2"
2265 ssse3_deps="sse3"
2266 sse4_deps="ssse3"
2267 sse42_deps="sse4"
2268 aesni_deps="sse42"
2269 avx_deps="sse42"
2270 xop_deps="avx"
2271 fma3_deps="avx"
2272 fma4_deps="avx"
2273 avx2_deps="avx"
2274
2275 mmx_external_deps="yasm"
2276 mmx_inline_deps="inline_asm"
2277 mmx_suggest="mmx_external mmx_inline"
2278
2279 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2280     eval dep=\$${ext}_deps
2281     eval ${ext}_external_deps='"${dep}_external"'
2282     eval ${ext}_inline_deps='"${dep}_inline"'
2283     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2284 done
2285
2286 aligned_stack_if_any="aarch64 ppc x86"
2287 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2288 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2289 fast_unaligned_if_any="aarch64 ppc x86"
2290 simd_align_16_if_any="altivec neon sse"
2291
2292 # system capabilities
2293 symver_if_any="symver_asm_label symver_gnu_asm"
2294 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2295
2296 # threading support
2297 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2298 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2299 atomics_win32_if="MemoryBarrier"
2300 atomics_native_if_any="$ATOMICS_LIST"
2301 w32threads_deps="atomics_native"
2302 threads_if_any="$THREADS_LIST"
2303
2304 # subsystems
2305 dct_select="rdft"
2306 dirac_parse_select="golomb"
2307 error_resilience_select="me_cmp"
2308 faandct_deps="faan fdctdsp"
2309 faanidct_deps="faan idctdsp"
2310 h264dsp_select="startcode"
2311 frame_thread_encoder_deps="encoders threads"
2312 intrax8_select="blockdsp idctdsp"
2313 mdct_select="fft"
2314 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2315 mpeg_er_select="error_resilience"
2316 mpegaudio_select="mpegaudiodsp"
2317 mpegaudiodsp_select="dct"
2318 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2319 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2320 vc1dsp_select="h264chroma qpeldsp startcode"
2321 rdft_select="fft"
2322
2323 # decoders / encoders
2324 aac_decoder_select="imdct15 mdct sinewin"
2325 aac_fixed_decoder_select="mdct sinewin"
2326 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2327 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2328 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2329 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2330 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2331 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2332 adpcm_g722_decoder_select="g722dsp"
2333 adpcm_g722_encoder_select="g722dsp"
2334 aic_decoder_select="golomb idctdsp"
2335 alac_encoder_select="lpc"
2336 als_decoder_select="bswapdsp"
2337 amrnb_decoder_select="lsp"
2338 amrwb_decoder_select="lsp"
2339 amv_decoder_select="sp5x_decoder exif"
2340 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2341 ape_decoder_select="bswapdsp llauddsp"
2342 apng_decoder_select="zlib"
2343 apng_encoder_select="huffyuvencdsp zlib"
2344 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2345 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2346 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2347 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2348 atrac1_decoder_select="mdct sinewin"
2349 atrac3_decoder_select="mdct"
2350 atrac3p_decoder_select="mdct sinewin"
2351 avrn_decoder_select="exif jpegtables"
2352 bink_decoder_select="blockdsp hpeldsp"
2353 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2354 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2355 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2356 cllc_decoder_select="bswapdsp"
2357 comfortnoise_encoder_select="lpc"
2358 cook_decoder_select="audiodsp mdct sinewin"
2359 cscd_decoder_select="lzo"
2360 cscd_decoder_suggest="zlib"
2361 dca_decoder_select="mdct"
2362 dds_decoder_select="texturedsp"
2363 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2364 dnxhd_decoder_select="blockdsp idctdsp"
2365 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2366 dvvideo_decoder_select="dvprofile idctdsp"
2367 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2368 dxa_decoder_select="zlib"
2369 dxv_decoder_select="lzf texturedsp"
2370 eac3_decoder_select="ac3_decoder"
2371 eac3_encoder_select="ac3_encoder"
2372 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2373 eatgq_decoder_select="aandcttables"
2374 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2375 exr_decoder_select="zlib"
2376 ffv1_decoder_select="golomb rangecoder"
2377 ffv1_encoder_select="rangecoder"
2378 ffvhuff_decoder_select="huffyuv_decoder"
2379 ffvhuff_encoder_select="huffyuv_encoder"
2380 fic_decoder_select="golomb"
2381 flac_decoder_select="flacdsp golomb"
2382 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2383 flashsv2_decoder_select="zlib"
2384 flashsv2_encoder_select="zlib"
2385 flashsv_decoder_select="zlib"
2386 flashsv_encoder_select="zlib"
2387 flv_decoder_select="h263_decoder"
2388 flv_encoder_select="h263_encoder"
2389 fourxm_decoder_select="blockdsp bswapdsp"
2390 fraps_decoder_select="bswapdsp huffman"
2391 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2392 g729_decoder_select="audiodsp"
2393 h261_decoder_select="mpegvideo"
2394 h261_encoder_select="aandcttables mpegvideoenc"
2395 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2396 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2397 h263i_decoder_select="h263_decoder"
2398 h263p_decoder_select="h263_decoder"
2399 h263p_encoder_select="h263_encoder"
2400 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2401 h264_decoder_suggest="error_resilience"
2402 hap_decoder_select="snappy texturedsp"
2403 hap_encoder_deps="libsnappy"
2404 hap_encoder_select="texturedspenc"
2405 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2406 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2407 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2408 iac_decoder_select="imc_decoder"
2409 imc_decoder_select="bswapdsp fft mdct sinewin"
2410 indeo3_decoder_select="hpeldsp"
2411 indeo4_decoder_select="ividsp"
2412 indeo5_decoder_select="ividsp"
2413 interplay_video_decoder_select="hpeldsp"
2414 jpegls_decoder_select="golomb mjpeg_decoder"
2415 jpegls_encoder_select="golomb"
2416 jv_decoder_select="blockdsp"
2417 lagarith_decoder_select="huffyuvdsp"
2418 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2419 loco_decoder_select="golomb"
2420 magicyuv_decoder_select="huffyuvdsp"
2421 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2422 metasound_decoder_select="lsp mdct sinewin"
2423 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2424 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2425 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2426 mjpegb_decoder_select="mjpeg_decoder"
2427 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2428 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2429 mlp_decoder_select="mlp_parser"
2430 motionpixels_decoder_select="bswapdsp"
2431 mp1_decoder_select="mpegaudio"
2432 mp1float_decoder_select="mpegaudio"
2433 mp2_decoder_select="mpegaudio"
2434 mp2float_decoder_select="mpegaudio"
2435 mp3_decoder_select="mpegaudio"
2436 mp3adu_decoder_select="mpegaudio"
2437 mp3adufloat_decoder_select="mpegaudio"
2438 mp3float_decoder_select="mpegaudio"
2439 mp3on4_decoder_select="mpegaudio"
2440 mp3on4float_decoder_select="mpegaudio"
2441 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2442 mpc8_decoder_select="mpegaudiodsp"
2443 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2444 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2445 mpegvideo_decoder_select="mpegvideo"
2446 mpeg1video_decoder_select="mpegvideo"
2447 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2448 mpeg2video_decoder_select="mpegvideo"
2449 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2450 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2451 mpeg4_encoder_select="h263_encoder"
2452 msa1_decoder_select="mss34dsp"
2453 msmpeg4v1_decoder_select="h263_decoder"
2454 msmpeg4v2_decoder_select="h263_decoder"
2455 msmpeg4v2_encoder_select="h263_encoder"
2456 msmpeg4v3_decoder_select="h263_decoder"
2457 msmpeg4v3_encoder_select="h263_encoder"
2458 mss2_decoder_select="vc1_decoder mpegvideo"
2459 mts2_decoder_select="mss34dsp"
2460 mxpeg_decoder_select="mjpeg_decoder"
2461 nellymoser_decoder_select="mdct sinewin"
2462 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2463 nuv_decoder_select="idctdsp lzo"
2464 on2avc_decoder_select="mdct"
2465 opus_decoder_deps="swresample"
2466 opus_decoder_select="imdct15"
2467 png_decoder_select="zlib"
2468 png_encoder_select="huffyuvencdsp zlib"
2469 prores_decoder_select="blockdsp idctdsp"
2470 prores_encoder_select="fdctdsp"
2471 qcelp_decoder_select="lsp"
2472 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2473 ra_144_decoder_select="audiodsp"
2474 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2475 ralf_decoder_select="golomb"
2476 rawvideo_decoder_select="bswapdsp"
2477 rscc_decoder_select="zlib"
2478 rtjpeg_decoder_select="me_cmp"
2479 rv10_decoder_select="h263_decoder"
2480 rv10_encoder_select="h263_encoder"
2481 rv20_decoder_select="h263_decoder"
2482 rv20_encoder_select="h263_encoder"
2483 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2484 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2485 screenpresso_decoder_select="zlib"
2486 shorten_decoder_select="golomb"
2487 sipr_decoder_select="lsp"
2488 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2489 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2490 sonic_decoder_select="golomb rangecoder"
2491 sonic_encoder_select="golomb rangecoder"
2492 sonic_ls_encoder_select="golomb rangecoder"
2493 sp5x_decoder_select="mjpeg_decoder"
2494 svq1_decoder_select="hpeldsp"
2495 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2496 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2497 svq3_decoder_suggest="zlib"
2498 tak_decoder_select="audiodsp"
2499 tdsc_decoder_select="zlib mjpeg_decoder"
2500 theora_decoder_select="vp3_decoder"
2501 thp_decoder_select="mjpeg_decoder"
2502 tiff_decoder_suggest="zlib lzma"
2503 tiff_encoder_suggest="zlib"
2504 truehd_decoder_select="mlp_parser"
2505 truemotion2_decoder_select="bswapdsp"
2506 truespeech_decoder_select="bswapdsp"
2507 tscc_decoder_select="zlib"
2508 twinvq_decoder_select="mdct lsp sinewin"
2509 txd_decoder_select="texturedsp"
2510 utvideo_decoder_select="bswapdsp"
2511 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2512 vble_decoder_select="huffyuvdsp"
2513 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2514 vc1_qsv_decoder_deps="libmfx"
2515 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2516 vc1image_decoder_select="vc1_decoder"
2517 vorbis_decoder_select="mdct"
2518 vorbis_encoder_select="mdct"
2519 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2520 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2521 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2522 vp6a_decoder_select="vp6_decoder"
2523 vp6f_decoder_select="vp6_decoder"
2524 vp7_decoder_select="h264pred videodsp vp8dsp"
2525 vp8_decoder_select="h264pred videodsp vp8dsp"
2526 vp9_decoder_select="videodsp vp9_parser"
2527 webp_decoder_select="vp8_decoder exif"
2528 wmalossless_decoder_select="llauddsp"
2529 wmapro_decoder_select="mdct sinewin wma_freqs"
2530 wmav1_decoder_select="mdct sinewin wma_freqs"
2531 wmav1_encoder_select="mdct sinewin wma_freqs"
2532 wmav2_decoder_select="mdct sinewin wma_freqs"
2533 wmav2_encoder_select="mdct sinewin wma_freqs"
2534 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2535 wmv1_decoder_select="h263_decoder"
2536 wmv1_encoder_select="h263_encoder"
2537 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2538 wmv2_encoder_select="h263_encoder wmv2dsp"
2539 wmv3_decoder_select="vc1_decoder"
2540 wmv3image_decoder_select="wmv3_decoder"
2541 xma1_decoder_select="wmapro_decoder"
2542 xma2_decoder_select="wmapro_decoder"
2543 zerocodec_decoder_select="zlib"
2544 zlib_decoder_select="zlib"
2545 zlib_encoder_select="zlib"
2546 zmbv_decoder_select="zlib"
2547 zmbv_encoder_select="zlib"
2548
2549 # platform codecs
2550 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2551 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2552
2553 # hardware accelerators
2554 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2555 cuda_deps_any="dlopen LoadLibrary"
2556 cuvid_deps="cuda"
2557 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2558 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2559 dxva2_extralibs="-luser32"
2560 vaapi_deps="va_va_h"
2561 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2562 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2563 vda_deps="vda_framework pthreads"
2564 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2565 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2566 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2567 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2568 xvmc_deps="X11_extensions_XvMClib_h"
2569
2570 h263_vaapi_hwaccel_deps="vaapi"
2571 h263_vaapi_hwaccel_select="h263_decoder"
2572 h263_videotoolbox_hwaccel_deps="videotoolbox"
2573 h263_videotoolbox_hwaccel_select="h263_decoder"
2574 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2575 h264_cuvid_hwaccel_deps="cuda cuvid"
2576 h264_d3d11va_hwaccel_deps="d3d11va"
2577 h264_d3d11va_hwaccel_select="h264_decoder"
2578 h264_dxva2_hwaccel_deps="dxva2"
2579 h264_dxva2_hwaccel_select="h264_decoder"
2580 h264_mediacodec_decoder_deps="mediacodec"
2581 h264_mediacodec_hwaccel_deps="mediacodec"
2582 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2583 h264_mmal_decoder_deps="mmal"
2584 h264_mmal_decoder_select="mmal"
2585 h264_mmal_hwaccel_deps="mmal"
2586 h264_omx_encoder_deps="omx"
2587 h264_qsv_hwaccel_deps="libmfx"
2588 h264_vaapi_hwaccel_deps="vaapi"
2589 h264_vaapi_hwaccel_select="h264_decoder"
2590 h264_vda_decoder_deps="vda"
2591 h264_vda_decoder_select="h264_decoder"
2592 h264_vda_hwaccel_deps="vda"
2593 h264_vda_hwaccel_select="h264_decoder"
2594 h264_vda_old_hwaccel_deps="vda"
2595 h264_vda_old_hwaccel_select="h264_decoder"
2596 h264_vdpau_decoder_deps="vdpau"
2597 h264_vdpau_decoder_select="h264_decoder"
2598 h264_vdpau_hwaccel_deps="vdpau"
2599 h264_vdpau_hwaccel_select="h264_decoder"
2600 h264_videotoolbox_hwaccel_deps="videotoolbox"
2601 h264_videotoolbox_hwaccel_select="h264_decoder"
2602 hevc_cuvid_hwaccel_deps="cuda cuvid"
2603 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2604 hevc_d3d11va_hwaccel_select="hevc_decoder"
2605 hevc_mediacodec_decoder_deps="mediacodec"
2606 hevc_mediacodec_hwaccel_deps="mediacodec"
2607 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2608 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2609 hevc_dxva2_hwaccel_select="hevc_decoder"
2610 hevc_qsv_hwaccel_deps="libmfx"
2611 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2612 hevc_vaapi_hwaccel_select="hevc_decoder"
2613 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2614 hevc_vdpau_hwaccel_select="hevc_decoder"
2615 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2616 mpeg_vdpau_decoder_deps="vdpau"
2617 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2618 mpeg_xvmc_hwaccel_deps="xvmc"
2619 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2620 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2621 mpeg1_vdpau_decoder_deps="vdpau"
2622 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2623 mpeg1_vdpau_hwaccel_deps="vdpau"
2624 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2625 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2626 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2627 mpeg1_xvmc_hwaccel_deps="xvmc"
2628 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2629 mpeg2_crystalhd_decoder_select="crystalhd"
2630 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2631 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2632 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2633 mpeg2_dxva2_hwaccel_deps="dxva2"
2634 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2635 mpeg2_mmal_decoder_deps="mmal"
2636 mpeg2_mmal_decoder_select="mmal"
2637 mpeg2_mmal_hwaccel_deps="mmal"
2638 mpeg2_qsv_hwaccel_deps="libmfx"
2639 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2640 mpeg2_vaapi_hwaccel_deps="vaapi"
2641 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2642 mpeg2_vdpau_hwaccel_deps="vdpau"
2643 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2644 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2645 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2646 mpeg2_xvmc_hwaccel_deps="xvmc"
2647 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2648 mpeg4_crystalhd_decoder_select="crystalhd"
2649 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg4_mediacodec_decoder_deps="mediacodec"
2651 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2652 mpeg4_mmal_decoder_deps="mmal"
2653 mpeg4_mmal_decoder_select="mmal"
2654 mpeg4_mmal_hwaccel_deps="mmal"
2655 mpeg4_omx_encoder_deps="omx"
2656 mpeg4_vaapi_hwaccel_deps="vaapi"
2657 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2658 mpeg4_vdpau_decoder_deps="vdpau"
2659 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2660 mpeg4_vdpau_hwaccel_deps="vdpau"
2661 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2662 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2663 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2664 msmpeg4_crystalhd_decoder_select="crystalhd"
2665 vc1_crystalhd_decoder_select="crystalhd"
2666 vc1_cuvid_hwaccel_deps="cuda cuvid"
2667 vc1_d3d11va_hwaccel_deps="d3d11va"
2668 vc1_d3d11va_hwaccel_select="vc1_decoder"
2669 vc1_dxva2_hwaccel_deps="dxva2"
2670 vc1_dxva2_hwaccel_select="vc1_decoder"
2671 vc1_mmal_decoder_deps="mmal"
2672 vc1_mmal_decoder_select="mmal"
2673 vc1_mmal_hwaccel_deps="mmal"
2674 vc1_qsv_hwaccel_deps="libmfx"
2675 vc1_qsv_hwaccel_select="qsvdec_vc1"
2676 vc1_vaapi_hwaccel_deps="vaapi"
2677 vc1_vaapi_hwaccel_select="vc1_decoder"
2678 vc1_vdpau_decoder_deps="vdpau"
2679 vc1_vdpau_decoder_select="vc1_decoder"
2680 vc1_vdpau_hwaccel_deps="vdpau"
2681 vc1_vdpau_hwaccel_select="vc1_decoder"
2682 vp8_cuvid_hwaccel_deps="cuda cuvid"
2683 vp9_cuvid_hwaccel_deps="cuda cuvid"
2684 vp8_mediacodec_decoder_deps="mediacodec"
2685 vp8_mediacodec_hwaccel_deps="mediacodec"
2686 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2687 vp9_d3d11va_hwaccel_select="vp9_decoder"
2688 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2689 vp9_dxva2_hwaccel_select="vp9_decoder"
2690 vp9_mediacodec_decoder_deps="mediacodec"
2691 vp9_mediacodec_hwaccel_deps="mediacodec"
2692 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2693 vp9_vaapi_hwaccel_select="vp9_decoder"
2694 wmv3_crystalhd_decoder_select="crystalhd"
2695 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2696 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2697 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2698 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2699 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2700
2701 # hardware-accelerated codecs
2702 omx_deps="dlopen pthreads"
2703 omx_extralibs='$ldl'
2704 qsvdec_select="qsv"
2705 qsvenc_select="qsv"
2706 vaapi_encode_deps="vaapi"
2707
2708 hwupload_cuda_filter_deps="cuda"
2709 scale_npp_filter_deps="cuda libnpp"
2710
2711 nvenc_deps="cuda"
2712 nvenc_deps_any="dlopen LoadLibrary"
2713 nvenc_encoder_deps="nvenc"
2714 h264_cuvid_decoder_deps="cuda cuvid"
2715 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2716 h264_nvenc_encoder_deps="nvenc"
2717 h264_qsv_decoder_deps="libmfx"
2718 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2719 h264_qsv_encoder_deps="libmfx"
2720 h264_qsv_encoder_select="qsvenc"
2721 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2722 h264_vaapi_encoder_select="vaapi_encode golomb"
2723
2724 hevc_cuvid_decoder_deps="cuda cuvid"
2725 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2726 hevc_nvenc_encoder_deps="nvenc"
2727 hevc_qsv_decoder_deps="libmfx"
2728 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2729 hevc_qsv_encoder_deps="libmfx"
2730 hevc_qsv_encoder_select="qsvenc"
2731 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2732 hevc_vaapi_encoder_select="vaapi_encode golomb"
2733 mjpeg_cuvid_decoder_deps="cuda cuvid"
2734 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2735 mpeg1_cuvid_decoder_deps="cuda cuvid"
2736 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2737 mpeg2_cuvid_decoder_deps="cuda cuvid"
2738 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2739 mpeg2_qsv_decoder_deps="libmfx"
2740 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2741 mpeg2_qsv_encoder_deps="libmfx"
2742 mpeg2_qsv_encoder_select="qsvenc"
2743 mpeg4_cuvid_decoder_deps="cuda cuvid"
2744 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2745 nvenc_h264_encoder_deps="nvenc"
2746 nvenc_hevc_encoder_deps="nvenc"
2747
2748 vc1_cuvid_decoder_deps="cuda cuvid"
2749 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2750 vp8_cuvid_decoder_deps="cuda cuvid"
2751 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2752 vp9_cuvid_decoder_deps="cuda cuvid"
2753 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2754
2755 # parsers
2756 h264_parser_select="golomb h264dsp h264parse"
2757 hevc_parser_select="golomb"
2758 mpegvideo_parser_select="mpegvideo"
2759 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2760 vc1_parser_select="vc1dsp"
2761
2762 # bitstream_filters
2763 mjpeg2jpeg_bsf_select="jpegtables"
2764
2765 # external libraries
2766 aac_at_decoder_deps="audiotoolbox"
2767 ac3_at_decoder_deps="audiotoolbox"
2768 ac3_at_decoder_select="ac3_parser"
2769 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2770 alac_at_decoder_deps="audiotoolbox"
2771 amr_nb_at_decoder_deps="audiotoolbox"
2772 avisynth_deps_any="dlopen LoadLibrary"
2773 avisynth_demuxer_deps="avisynth"
2774 avisynth_demuxer_select="riffdec"
2775 eac3_at_decoder_deps="audiotoolbox"
2776 eac3_at_decoder_select="ac3_parser"
2777 gsm_ms_at_decoder_deps="audiotoolbox"
2778 ilbc_at_decoder_deps="audiotoolbox"
2779 mp1_at_decoder_deps="audiotoolbox"
2780 mp2_at_decoder_deps="audiotoolbox"
2781 mp3_at_decoder_deps="audiotoolbox"
2782 pcm_alaw_at_decoder_deps="audiotoolbox"
2783 pcm_mulaw_at_decoder_deps="audiotoolbox"
2784 qdmc_at_decoder_deps="audiotoolbox"
2785 qdm2_at_decoder_deps="audiotoolbox"
2786 aac_at_encoder_deps="audiotoolbox"
2787 aac_at_encoder_select="audio_frame_queue"
2788 alac_at_encoder_deps="audiotoolbox"
2789 alac_at_encoder_select="audio_frame_queue"
2790 ilbc_at_encoder_deps="audiotoolbox"
2791 ilbc_at_encoder_select="audio_frame_queue"
2792 pcm_alaw_at_encoder_deps="audiotoolbox"
2793 pcm_alaw_at_encoder_select="audio_frame_queue"
2794 pcm_mulaw_at_encoder_deps="audiotoolbox"
2795 pcm_mulaw_at_encoder_select="audio_frame_queue"
2796 chromaprint_muxer_deps="chromaprint"
2797 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2798 libcelt_decoder_deps="libcelt"
2799 libfdk_aac_decoder_deps="libfdk_aac"
2800 libfdk_aac_encoder_deps="libfdk_aac"
2801 libfdk_aac_encoder_select="audio_frame_queue"
2802 libgme_demuxer_deps="libgme"
2803 libgsm_decoder_deps="libgsm"
2804 libgsm_encoder_deps="libgsm"
2805 libgsm_ms_decoder_deps="libgsm"
2806 libgsm_ms_encoder_deps="libgsm"
2807 libilbc_decoder_deps="libilbc"
2808 libilbc_encoder_deps="libilbc"
2809 libkvazaar_encoder_deps="libkvazaar"
2810 libmodplug_demuxer_deps="libmodplug"
2811 libmp3lame_encoder_deps="libmp3lame"
2812 libmp3lame_encoder_select="audio_frame_queue"
2813 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2814 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2815 libopencore_amrnb_encoder_select="audio_frame_queue"
2816 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2817 libopenh264_decoder_deps="libopenh264"
2818 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2819 libopenh264_encoder_deps="libopenh264"
2820 libopenjpeg_decoder_deps="libopenjpeg"
2821 libopenjpeg_encoder_deps="libopenjpeg"
2822 libopenmpt_demuxer_deps="libopenmpt"
2823 libopus_decoder_deps="libopus"
2824 libopus_encoder_deps="libopus"
2825 libopus_encoder_select="audio_frame_queue"
2826 libschroedinger_decoder_deps="libschroedinger"
2827 libschroedinger_encoder_deps="libschroedinger"
2828 libshine_encoder_deps="libshine"
2829 libshine_encoder_select="audio_frame_queue"
2830 libspeex_decoder_deps="libspeex"
2831 libspeex_encoder_deps="libspeex"
2832 libspeex_encoder_select="audio_frame_queue"
2833 libtheora_encoder_deps="libtheora"
2834 libtwolame_encoder_deps="libtwolame"
2835 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2836 libvorbis_decoder_deps="libvorbis"
2837 libvorbis_encoder_deps="libvorbis"
2838 libvorbis_encoder_select="audio_frame_queue"
2839 libvpx_vp8_decoder_deps="libvpx"
2840 libvpx_vp8_encoder_deps="libvpx"
2841 libvpx_vp9_decoder_deps="libvpx"
2842 libvpx_vp9_encoder_deps="libvpx"
2843 libwavpack_encoder_deps="libwavpack"
2844 libwebp_encoder_deps="libwebp"
2845 libwebp_anim_encoder_deps="libwebp"
2846 libx262_encoder_deps="libx262"
2847 libx264_encoder_deps="libx264"
2848 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2849 libx264rgb_encoder_select="libx264_encoder"
2850 libx265_encoder_deps="libx265"
2851 libxavs_encoder_deps="libxavs"
2852 libxvid_encoder_deps="libxvid"
2853 libzvbi_teletext_decoder_deps="libzvbi"
2854 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2855 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2856 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2857 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2858 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2859
2860 # demuxers / muxers
2861 ac3_demuxer_select="ac3_parser"
2862 asf_demuxer_select="riffdec"
2863 asf_o_demuxer_select="riffdec"
2864 asf_muxer_select="riffenc"
2865 asf_stream_muxer_select="asf_muxer"
2866 avi_demuxer_select="iso_media riffdec exif"
2867 avi_muxer_select="riffenc"
2868 caf_demuxer_select="iso_media riffdec"
2869 dash_muxer_select="mp4_muxer"
2870 dirac_demuxer_select="dirac_parser"
2871 dts_demuxer_select="dca_parser"
2872 dtshd_demuxer_select="dca_parser"
2873 dv_demuxer_select="dvprofile"
2874 dv_muxer_select="dvprofile"
2875 dxa_demuxer_select="riffdec"
2876 eac3_demuxer_select="ac3_parser"
2877 f4v_muxer_select="mov_muxer"
2878 fifo_muxer_deps="threads"
2879 flac_demuxer_select="flac_parser"
2880 hds_muxer_select="flv_muxer"
2881 hls_muxer_select="mpegts_muxer"
2882 image2_alias_pix_demuxer_select="image2_demuxer"
2883 image2_brender_pix_demuxer_select="image2_demuxer"
2884 ipod_muxer_select="mov_muxer"
2885 ismv_muxer_select="mov_muxer"
2886 libnut_demuxer_deps="libnut"
2887 libnut_muxer_deps="libnut"
2888 matroska_audio_muxer_select="matroska_muxer"
2889 matroska_demuxer_select="iso_media riffdec"
2890 matroska_demuxer_suggest="bzlib lzo zlib"
2891 matroska_muxer_select="iso_media riffenc"
2892 mmf_muxer_select="riffenc"
2893 mov_demuxer_select="iso_media riffdec"
2894 mov_demuxer_suggest="zlib"
2895 mov_muxer_select="iso_media riffenc rtpenc_chain"
2896 mp3_demuxer_select="mpegaudio_parser"
2897 mp4_muxer_select="mov_muxer"
2898 mpegts_demuxer_select="iso_media"
2899 mpegts_muxer_select="adts_muxer latm_muxer"
2900 mpegtsraw_demuxer_select="mpegts_demuxer"
2901 mxf_d10_muxer_select="mxf_muxer"
2902 mxf_opatom_muxer_select="mxf_muxer"
2903 nut_muxer_select="riffenc"
2904 nuv_demuxer_select="riffdec"
2905 oga_muxer_select="ogg_muxer"
2906 ogg_demuxer_select="dirac_parse"
2907 ogv_muxer_select="ogg_muxer"
2908 opus_muxer_select="ogg_muxer"
2909 psp_muxer_select="mov_muxer"
2910 rtp_demuxer_select="sdp_demuxer"
2911 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2912 rtsp_demuxer_select="http_protocol rtpdec"
2913 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2914 sap_demuxer_select="sdp_demuxer"
2915 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2916 sdp_demuxer_select="rtpdec"
2917 smoothstreaming_muxer_select="ismv_muxer"
2918 spdif_muxer_select="aac_parser"
2919 spx_muxer_select="ogg_muxer"
2920 swf_demuxer_suggest="zlib"
2921 tak_demuxer_select="tak_parser"
2922 tg2_muxer_select="mov_muxer"
2923 tgp_muxer_select="mov_muxer"
2924 vobsub_demuxer_select="mpegps_demuxer"
2925 w64_demuxer_select="wav_demuxer"
2926 w64_muxer_select="wav_muxer"
2927 wav_demuxer_select="riffdec"
2928 wav_muxer_select="riffenc"
2929 webm_muxer_select="iso_media riffenc"
2930 webm_dash_manifest_demuxer_select="matroska_demuxer"
2931 wtv_demuxer_select="mpegts_demuxer riffdec"
2932 wtv_muxer_select="mpegts_muxer riffenc"
2933 xmv_demuxer_select="riffdec"
2934 xwma_demuxer_select="riffdec"
2935
2936 # indevs / outdevs
2937 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2938 alsa_outdev_deps="alsa_asoundlib_h"
2939 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2940 avfoundation_indev_select="avfoundation"
2941 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2942 caca_outdev_deps="libcaca"
2943 decklink_indev_deps="decklink pthreads"
2944 decklink_indev_extralibs="-lstdc++"
2945 decklink_outdev_deps="decklink pthreads"
2946 decklink_outdev_extralibs="-lstdc++"
2947 dshow_indev_deps="IBaseFilter"
2948 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2949 dv1394_indev_deps="dv1394"
2950 dv1394_indev_select="dv_demuxer"
2951 fbdev_indev_deps="linux_fb_h"
2952 fbdev_outdev_deps="linux_fb_h"
2953 gdigrab_indev_deps="CreateDIBSection"
2954 gdigrab_indev_extralibs="-lgdi32"
2955 gdigrab_indev_select="bmp_decoder"
2956 iec61883_indev_deps="libiec61883"
2957 jack_indev_deps="jack_jack_h"
2958 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2959 lavfi_indev_deps="avfilter"
2960 libcdio_indev_deps="libcdio"
2961 libdc1394_indev_deps="libdc1394"
2962 libv4l2_indev_deps="libv4l2"
2963 openal_indev_deps="openal"
2964 opengl_outdev_deps="opengl"
2965 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2966 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2967 pulse_indev_deps="libpulse"
2968 pulse_outdev_deps="libpulse"
2969 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2970 qtkit_indev_select="qtkit"
2971 sdl2_outdev_deps="sdl2"
2972 sndio_indev_deps="sndio_h"
2973 sndio_outdev_deps="sndio_h"
2974 v4l_indev_deps="linux_videodev_h"
2975 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2976 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2977 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2978 vfwcap_indev_extralibs="-lavicap32"
2979 x11grab_indev_deps="x11grab"
2980 x11grab_xcb_indev_deps="libxcb"
2981 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2982 xv_outdev_extralibs="-lXv -lX11 -lXext"
2983
2984 # protocols
2985 async_protocol_deps="threads"
2986 bluray_protocol_deps="libbluray"
2987 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2988 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2989 ffrtmpcrypt_protocol_select="tcp_protocol"
2990 ffrtmphttp_protocol_deps="!librtmp_protocol"
2991 ffrtmphttp_protocol_select="http_protocol"
2992 ftp_protocol_select="tcp_protocol"
2993 gopher_protocol_select="network"
2994 http_protocol_select="tcp_protocol"
2995 httpproxy_protocol_select="tcp_protocol"
2996 https_protocol_select="tls_protocol"
2997 icecast_protocol_select="http_protocol"
2998 librtmp_protocol_deps="librtmp"
2999 librtmpe_protocol_deps="librtmp"
3000 librtmps_protocol_deps="librtmp"
3001 librtmpt_protocol_deps="librtmp"
3002 librtmpte_protocol_deps="librtmp"
3003 libsmbclient_protocol_deps="libsmbclient gplv3"
3004 libssh_protocol_deps="libssh"
3005 mmsh_protocol_select="http_protocol"
3006 mmst_protocol_select="network"
3007 rtmp_protocol_deps="!librtmp_protocol"
3008 rtmp_protocol_select="tcp_protocol"
3009 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3010 rtmps_protocol_deps="!librtmp_protocol"
3011 rtmps_protocol_select="tls_protocol"
3012 rtmpt_protocol_select="ffrtmphttp_protocol"
3013 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3014 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3015 rtp_protocol_select="udp_protocol"
3016 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3017 sctp_protocol_select="network"
3018 srtp_protocol_select="rtp_protocol srtp"
3019 tcp_protocol_select="network"
3020 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3021 tls_gnutls_protocol_select="tcp_protocol"
3022 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3023 tls_openssl_protocol_select="tcp_protocol"
3024 tls_schannel_protocol_deps="schannel"
3025 tls_schannel_protocol_select="tcp_protocol"
3026 tls_securetransport_protocol_deps="securetransport"
3027 tls_securetransport_protocol_select="tcp_protocol"
3028 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3029 udp_protocol_select="network"
3030 udplite_protocol_select="network"
3031 unix_protocol_deps="sys_un_h"
3032 unix_protocol_select="network"
3033
3034 # filters
3035 afftfilt_filter_deps="avcodec"
3036 afftfilt_filter_select="fft"
3037 amovie_filter_deps="avcodec avformat"
3038 aresample_filter_deps="swresample"
3039 ass_filter_deps="libass"
3040 asyncts_filter_deps="avresample"
3041 atempo_filter_deps="avcodec"
3042 atempo_filter_select="rdft"
3043 azmq_filter_deps="libzmq"
3044 blackframe_filter_deps="gpl"
3045 boxblur_filter_deps="gpl"
3046 bs2b_filter_deps="libbs2b"
3047 colormatrix_filter_deps="gpl"
3048 cover_rect_filter_deps="avcodec avformat gpl"
3049 cropdetect_filter_deps="gpl"
3050 delogo_filter_deps="gpl"
3051 deshake_filter_select="pixelutils"
3052 drawtext_filter_deps="libfreetype"
3053 eq_filter_deps="gpl"
3054 fftfilt_filter_deps="avcodec"
3055 fftfilt_filter_select="rdft"
3056 find_rect_filter_deps="avcodec avformat gpl"
3057 firequalizer_filter_deps="avcodec"
3058 firequalizer_filter_select="rdft"
3059 flite_filter_deps="libflite"
3060 framerate_filter_select="pixelutils"
3061 frei0r_filter_deps="frei0r dlopen"
3062 frei0r_src_filter_deps="frei0r dlopen"
3063 fspp_filter_deps="gpl"
3064 geq_filter_deps="gpl"
3065 histeq_filter_deps="gpl"
3066 hqdn3d_filter_deps="gpl"
3067 interlace_filter_deps="gpl"
3068 kerndeint_filter_deps="gpl"
3069 ladspa_filter_deps="ladspa dlopen"
3070 mcdeint_filter_deps="avcodec gpl"
3071 movie_filter_deps="avcodec avformat"
3072 mpdecimate_filter_deps="gpl"
3073 mpdecimate_filter_select="pixelutils"
3074 mptestsrc_filter_deps="gpl"
3075 negate_filter_deps="lut_filter"
3076 nnedi_filter_deps="gpl"
3077 ocr_filter_deps="libtesseract"
3078 ocv_filter_deps="libopencv"
3079 owdenoise_filter_deps="gpl"
3080 pan_filter_deps="swresample"
3081 perspective_filter_deps="gpl"
3082 phase_filter_deps="gpl"
3083 pp7_filter_deps="gpl"
3084 pp_filter_deps="gpl postproc"
3085 pullup_filter_deps="gpl"
3086 removelogo_filter_deps="avcodec avformat swscale"
3087 repeatfields_filter_deps="gpl"
3088 resample_filter_deps="avresample"
3089 rubberband_filter_deps="librubberband"
3090 sab_filter_deps="gpl swscale"
3091 scale2ref_filter_deps="swscale"
3092 scale_filter_deps="swscale"
3093 select_filter_select="pixelutils"
3094 showcqt_filter_deps="avcodec avformat swscale"
3095 showcqt_filter_select="fft"
3096 showfreqs_filter_deps="avcodec"
3097 showfreqs_filter_select="fft"
3098 showspectrum_filter_deps="avcodec"
3099 showspectrum_filter_select="fft"
3100 showspectrumpic_filter_deps="avcodec"
3101 showspectrumpic_filter_select="fft"
3102 smartblur_filter_deps="gpl swscale"
3103 sofalizer_filter_deps="netcdf avcodec"
3104 sofalizer_filter_select="fft"
3105 spectrumsynth_filter_deps="avcodec"
3106 spectrumsynth_filter_select="fft"
3107 spp_filter_deps="gpl avcodec"
3108 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3109 stereo3d_filter_deps="gpl"
3110 subtitles_filter_deps="avformat avcodec libass"
3111 super2xsai_filter_deps="gpl"
3112 pixfmts_super2xsai_test_deps="super2xsai_filter"
3113 tinterlace_filter_deps="gpl"
3114 tinterlace_merge_test_deps="tinterlace_filter"
3115 tinterlace_pad_test_deps="tinterlace_filter"
3116 uspp_filter_deps="gpl avcodec"
3117 vaguedenoiser_filter_deps="gpl"
3118 vidstabdetect_filter_deps="libvidstab"
3119 vidstabtransform_filter_deps="libvidstab"
3120 zmq_filter_deps="libzmq"
3121 zoompan_filter_deps="swscale"
3122 zscale_filter_deps="libzimg"
3123 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3124
3125 # examples
3126 avio_dir_cmd_deps="avformat avutil"
3127 avio_reading_deps="avformat avcodec avutil"
3128 decoding_encoding_example_deps="avcodec avformat avutil"
3129 demuxing_decoding_example_deps="avcodec avformat avutil"
3130 extract_mvs_example_deps="avcodec avformat avutil"
3131 filter_audio_example_deps="avfilter avutil"
3132 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3133 filtering_video_example_deps="avfilter avcodec avformat avutil"
3134 http_multiclient_example_deps="avformat avutil fork"
3135 metadata_example_deps="avformat avutil"
3136 muxing_example_deps="avcodec avformat avutil swscale"
3137 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3138 remuxing_example_deps="avcodec avformat avutil"
3139 resampling_audio_example_deps="avutil swresample"
3140 scaling_video_example_deps="avutil swscale"
3141 transcode_aac_example_deps="avcodec avformat swresample"
3142 transcoding_example_deps="avfilter avcodec avformat avutil"
3143
3144 # libraries, in linking order
3145 avcodec_deps="avutil"
3146 avdevice_deps="avformat avcodec avutil"
3147 avfilter_deps="avutil"
3148 avformat_deps="avcodec avutil"
3149 avresample_deps="avutil"
3150 postproc_deps="avutil gpl"
3151 swresample_deps="avutil"
3152 swscale_deps="avutil"
3153
3154 # programs
3155 ffmpeg_deps="avcodec avfilter avformat swresample"
3156 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3157                null_filter
3158                setpts_filter trim_filter"
3159 ffplay_deps="avcodec avformat swscale swresample sdl2"
3160 ffplay_libs='$sdl2_libs'
3161 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3162 ffprobe_deps="avcodec avformat"
3163 ffserver_deps="avformat fork sarestart"
3164 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3165
3166 # documentation
3167 podpages_deps="perl"
3168 manpages_deps="perl pod2man"
3169 htmlpages_deps="perl"
3170 htmlpages_deps_any="makeinfo_html texi2html"
3171 txtpages_deps="perl makeinfo"
3172 doc_deps_any="manpages htmlpages podpages txtpages"
3173
3174 # default parameters
3175
3176 logfile="config.log"
3177
3178 # installation paths
3179 prefix_default="/usr/local"
3180 bindir_default='${prefix}/bin'
3181 datadir_default='${prefix}/share/ffmpeg'
3182 docdir_default='${prefix}/share/doc/ffmpeg'
3183 incdir_default='${prefix}/include'
3184 libdir_default='${prefix}/lib'
3185 mandir_default='${prefix}/share/man'
3186
3187 # toolchain
3188 ar_default="ar"
3189 cc_default="gcc"
3190 cxx_default="g++"
3191 host_cc_default="gcc"
3192 cp_f="cp -f"
3193 doxygen_default="doxygen"
3194 install="install"
3195 ln_s_default="ln -s -f"
3196 nm_default="nm -g"
3197 objformat="elf"
3198 pkg_config_default=pkg-config
3199 ranlib_default="ranlib"
3200 strip_default="strip"
3201 version_script='--version-script'
3202 yasmexe_default="yasm"
3203 windres_default="windres"
3204
3205 # OS
3206 target_os_default=$(tolower $(uname -s))
3207 host_os=$target_os_default
3208
3209 # machine
3210 if test "$target_os_default" = aix; then
3211     arch_default=$(uname -p)
3212     strip_default="strip -X32_64"
3213 else
3214     arch_default=$(uname -m)
3215 fi
3216 cpu="generic"
3217 intrinsics="none"
3218
3219 # configurable options
3220 enable $PROGRAM_LIST
3221 enable $DOCUMENT_LIST
3222 enable $EXAMPLE_LIST
3223 enable $(filter_out avresample $LIBRARY_LIST)
3224 enable stripping
3225
3226 enable asm
3227 enable debug
3228 enable doc
3229 enable faan faandct faanidct
3230 enable optimizations
3231 enable runtime_cpudetect
3232 enable safe_bitstream_reader
3233 enable static
3234 enable swscale_alpha
3235 enable valgrind_backtrace
3236
3237 sws_max_filter_size_default=256
3238 set_default sws_max_filter_size
3239
3240 # Enable platform codecs by default.
3241 enable audiotoolbox
3242
3243 # Enable hwaccels by default.
3244 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3245 enable xlib
3246
3247 enable cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3248
3249 # build settings
3250 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3251 LIBPREF="lib"
3252 LIBSUF=".a"
3253 FULLNAME='$(NAME)$(BUILDSUF)'
3254 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3255 SLIBPREF="lib"
3256 SLIBSUF=".so"
3257 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3258 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3259 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3260 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3261 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3262 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3263 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3264
3265 asflags_filter=echo
3266 cflags_filter=echo
3267 ldflags_filter=echo
3268
3269 AS_C='-c'
3270 AS_O='-o $@'
3271 CC_C='-c'
3272 CC_E='-E -o $@'
3273 CC_O='-o $@'
3274 CXX_C='-c'
3275 CXX_O='-o $@'
3276 OBJCC_C='-c'
3277 OBJCC_E='-E -o $@'
3278 OBJCC_O='-o $@'
3279 LD_O='-o $@'
3280 LD_LIB='-l%'
3281 LD_PATH='-L'
3282 HOSTCC_C='-c'
3283 HOSTCC_E='-E -o $@'
3284 HOSTCC_O='-o $@'
3285 HOSTLD_O='-o $@'
3286
3287 host_libs='-lm'
3288 host_cflags_filter=echo
3289 host_ldflags_filter=echo
3290
3291 target_path='$(CURDIR)'
3292
3293 # since the object filename is not given with the -MM flag, the compiler
3294 # is only able to print the basename, and we must add the path ourselves
3295 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3296 DEPFLAGS='-MM'
3297
3298 # find source path
3299 if test -f configure; then
3300     source_path=.
3301 else
3302     source_path=$(cd $(dirname "$0"); pwd)
3303     case "$source_path" in
3304         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3305     esac
3306     test -e "$source_path/config.h" &&
3307         die "Out of tree builds are impossible with config.h in source dir."
3308 fi
3309
3310 for v in "$@"; do
3311     r=${v#*=}
3312     l=${v%"$r"}
3313     r=$(sh_quote "$r")
3314     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3315 done
3316
3317 find_things(){
3318     thing=$1
3319     pattern=$2
3320     file=$source_path/$3
3321     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3322 }
3323
3324 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3325 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3326 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3327 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3328 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3329 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3330 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3331 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3332 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3333
3334 find_things_extern(){
3335     thing=$1
3336     pattern=$2
3337     file=$source_path/$3
3338     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3339 }
3340
3341 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3342 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3343
3344 ALL_COMPONENTS="
3345     $BSF_LIST
3346     $DECODER_LIST
3347     $DEMUXER_LIST
3348     $ENCODER_LIST
3349     $FILTER_LIST
3350     $HWACCEL_LIST
3351     $INDEV_LIST
3352     $MUXER_LIST
3353     $OUTDEV_LIST
3354     $PARSER_LIST
3355     $PROTOCOL_LIST
3356 "
3357
3358 for n in $COMPONENT_LIST; do
3359     v=$(toupper ${n%s})_LIST
3360     eval enable \$$v
3361     eval ${n}_if_any="\$$v"
3362 done
3363
3364 enable $ARCH_EXT_LIST
3365
3366 die_unknown(){
3367     echo "Unknown option \"$1\"."
3368     echo "See $0 --help for available options."
3369     exit 1
3370 }
3371
3372 print_in_columns() {
3373     cols=$(expr $ncols / 24)
3374     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3375 }
3376
3377 show_list() {
3378     suffix=_$1
3379     shift
3380     echo $* | sed s/$suffix//g | print_in_columns
3381     exit 0
3382 }
3383
3384 rand_list(){
3385     IFS=', '
3386     set -- $*
3387     unset IFS
3388     for thing; do
3389         comp=${thing%:*}
3390         prob=${thing#$comp}
3391         prob=${prob#:}
3392         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3393         echo "prob ${prob:-0.5}"
3394         printf '%s\n' $comp
3395     done
3396 }
3397
3398 do_random(){
3399     action=$1
3400     shift
3401     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3402     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3403 }
3404
3405 for opt do
3406     optval="${opt#*=}"
3407     case "$opt" in
3408         --extra-ldflags=*)
3409             add_ldflags $optval
3410         ;;
3411         --extra-ldexeflags=*)
3412             add_ldexeflags $optval
3413         ;;
3414         --extra-ldlibflags=*)
3415             add_ldlibflags $optval
3416         ;;
3417         --extra-libs=*)
3418             add_extralibs $optval
3419         ;;
3420         --disable-devices)
3421             disable $INDEV_LIST $OUTDEV_LIST
3422         ;;
3423         --enable-debug=*)
3424             debuglevel="$optval"
3425         ;;
3426         --disable-programs)
3427             disable $PROGRAM_LIST
3428         ;;
3429         --disable-everything)
3430             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3431         ;;
3432         --disable-all)
3433             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3434             disable $LIBRARY_LIST $PROGRAM_LIST doc
3435             enable avutil
3436         ;;
3437         --enable-random|--disable-random)
3438             action=${opt%%-random}
3439             do_random ${action#--} $COMPONENT_LIST
3440         ;;
3441         --enable-random=*|--disable-random=*)
3442             action=${opt%%-random=*}
3443             do_random ${action#--} $optval
3444         ;;
3445         --enable-*=*|--disable-*=*)
3446             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3447             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3448             eval list=\$$(toupper $thing)_LIST
3449             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3450             list=$(filter "$name" $list)
3451             [ "$list" = "" ] && warn "Option $opt did not match anything"
3452             $action $list
3453         ;;
3454         --enable-?*|--disable-?*)
3455             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3456             if is_in $option $COMPONENT_LIST; then
3457                 test $action = disable && action=unset
3458                 eval $action \$$(toupper ${option%s})_LIST
3459             elif is_in $option $CMDLINE_SELECT; then
3460                 $action $option
3461             else
3462                 die_unknown $opt
3463             fi
3464         ;;
3465         --list-*)
3466             NAME="${opt#--list-}"
3467             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3468             NAME=${NAME%s}
3469             eval show_list $NAME \$$(toupper $NAME)_LIST
3470         ;;
3471         --help|-h) show_help
3472         ;;
3473         --fatal-warnings) enable fatal_warnings
3474         ;;
3475         *)
3476             optname="${opt%%=*}"
3477             optname="${optname#--}"
3478             optname=$(echo "$optname" | sed 's/-/_/g')
3479             if is_in $optname $CMDLINE_SET; then
3480                 eval $optname='$optval'
3481             elif is_in $optname $CMDLINE_APPEND; then
3482                 append $optname "$optval"
3483             else
3484                 die_unknown $opt
3485             fi
3486         ;;
3487     esac
3488 done
3489
3490 for e in $env; do
3491     eval "export $e"
3492 done
3493
3494 disabled logging && logfile=/dev/null
3495
3496 # Disable all the library-specific components if the library itself
3497 # is disabled, see AVCODEC_LIST and following _LIST variables.
3498
3499 disable_components(){
3500     disabled ${1} && disable $(
3501         eval components="\$$(toupper ${1})_COMPONENTS"
3502         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3503     )
3504 }
3505
3506 map 'disable_components $v' $LIBRARY_LIST
3507
3508 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3509 set >> $logfile
3510
3511 test -n "$valgrind" && toolchain="valgrind-memcheck"
3512
3513 case "$toolchain" in
3514     *-asan)
3515         cc_default="${toolchain%-asan}"
3516         add_cflags  -fsanitize=address
3517         add_ldflags -fsanitize=address
3518     ;;
3519     *-msan)
3520         cc_default="${toolchain%-msan}"
3521         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3522         add_ldflags -fsanitize=memory
3523     ;;
3524     *-tsan)
3525         cc_default="${toolchain%-tsan}"
3526         add_cflags  -fsanitize=thread -pie
3527         add_ldflags -fsanitize=thread -pie
3528         case "$toolchain" in
3529             gcc-tsan)
3530                 add_cflags  -fPIC
3531                 add_ldflags -fPIC
3532                 ;;
3533         esac
3534     ;;
3535     *-usan)
3536         cc_default="${toolchain%-usan}"
3537         add_cflags  -fsanitize=undefined
3538         add_ldflags -fsanitize=undefined
3539     ;;
3540     valgrind-*)
3541         target_exec_default="valgrind"
3542         case "$toolchain" in
3543             valgrind-massif)
3544                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3545                 ;;
3546             valgrind-memcheck)
3547                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3548                 ;;
3549         esac
3550     ;;
3551     msvc)
3552         # Check whether the current MSVC version needs the C99 converter.
3553         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3554         # support enough of C99 to build ffmpeg. Default to the new
3555         # behaviour if the regexp was unable to match anything, since this
3556         # successfully parses the version number of existing supported
3557         # versions that require the converter (MSVC 2010 and 2012).
3558         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3559         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3560             cc_default="cl"
3561         else
3562             cc_default="c99wrap cl"
3563         fi
3564         ld_default="$source_path/compat/windows/mslink"
3565         nm_default="dumpbin -symbols"
3566         ar_default="lib"
3567         case "$arch" in
3568         arm*)
3569             as_default="armasm"
3570             ;;
3571         esac
3572         target_os_default="win32"
3573         # Use a relative path for TMPDIR. This makes sure all the
3574         # ffconf temp files are written with a relative path, avoiding
3575         # issues with msys/win32 path conversion for MSVC parameters
3576         # such as -Fo<file> or -out:<file>.
3577         TMPDIR=.
3578     ;;
3579     icl)
3580         cc_default="icl"
3581         ld_default="xilink"
3582         nm_default="dumpbin -symbols"
3583         ar_default="xilib"
3584         target_os_default="win32"
3585         TMPDIR=.
3586     ;;
3587     gcov)
3588         add_cflags  -fprofile-arcs -ftest-coverage
3589         add_ldflags -fprofile-arcs -ftest-coverage
3590     ;;
3591     llvm-cov)
3592         add_cflags -fprofile-arcs -ftest-coverage
3593         add_ldflags --coverage
3594     ;;
3595     hardened)
3596         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3597         add_cflags   -fno-strict-overflow -fstack-protector-all
3598         add_ldflags  -Wl,-z,relro -Wl,-z,now
3599         add_cflags   -fPIE
3600         add_ldexeflags -fPIE -pie
3601     ;;
3602     ?*)
3603         die "Unknown toolchain $toolchain"
3604     ;;
3605 esac
3606
3607 test -n "$cross_prefix" && enable cross_compile
3608
3609 if enabled cross_compile; then
3610     test -n "$arch" && test -n "$target_os" ||
3611         die "Must specify target arch and OS when cross-compiling"
3612 fi
3613
3614 ar_default="${cross_prefix}${ar_default}"
3615 cc_default="${cross_prefix}${cc_default}"
3616 cxx_default="${cross_prefix}${cxx_default}"
3617 nm_default="${cross_prefix}${nm_default}"
3618 pkg_config_default="${cross_prefix}${pkg_config_default}"
3619 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3620     ranlib_default="${cross_prefix}${ranlib_default} -D"
3621 else
3622     ranlib_default="${cross_prefix}${ranlib_default}"
3623 fi
3624 strip_default="${cross_prefix}${strip_default}"
3625 windres_default="${cross_prefix}${windres_default}"
3626
3627 sysinclude_default="${sysroot}/usr/include"
3628
3629 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3630     target_exec target_os yasmexe
3631 enabled cross_compile || host_cc_default=$cc
3632 set_default host_cc
3633
3634 pkg_config_fail_message=""
3635 if ! $pkg_config --version >/dev/null 2>&1; then
3636     warn "$pkg_config not found, library detection may fail."
3637     pkg_config=false
3638 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3639     pkg_config_fail_message="
3640 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3641 fi
3642
3643 if test $doxygen != $doxygen_default && \
3644   ! $doxygen --version >/dev/null 2>&1; then
3645     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3646 fi
3647
3648 exesuf() {
3649     case $1 in
3650         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3651     esac
3652 }
3653
3654 EXESUF=$(exesuf $target_os)
3655 HOSTEXESUF=$(exesuf $host_os)
3656
3657 # set temporary file name
3658 : ${TMPDIR:=$TEMPDIR}
3659 : ${TMPDIR:=$TMP}
3660 : ${TMPDIR:=/tmp}
3661
3662 if [ -n "$tempprefix" ] ; then
3663     mktemp(){
3664         echo $tempprefix.${HOSTNAME}.${UID}
3665     }
3666 elif ! check_cmd mktemp -u XXXXXX; then
3667     # simple replacement for missing mktemp
3668     # NOT SAFE FOR GENERAL USE
3669     mktemp(){
3670         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3671     }
3672 fi
3673
3674 tmpfile(){
3675     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3676         (set -C; exec > $tmp) 2>/dev/null ||
3677         die "Unable to create temporary file in $TMPDIR."
3678     append TMPFILES $tmp
3679     eval $1=$tmp
3680 }
3681
3682 trap 'rm -f -- $TMPFILES' EXIT
3683
3684 tmpfile TMPASM .asm
3685 tmpfile TMPC   .c
3686 tmpfile TMPCPP .cpp
3687 tmpfile TMPE   $EXESUF
3688 tmpfile TMPH   .h
3689 tmpfile TMPM   .m
3690 tmpfile TMPO   .o
3691 tmpfile TMPS   .S
3692 tmpfile TMPSH  .sh
3693 tmpfile TMPV   .ver
3694
3695 unset -f mktemp
3696
3697 chmod +x $TMPE
3698
3699 # make sure we can execute files in $TMPDIR
3700 cat > $TMPSH 2>> $logfile <<EOF
3701 #! /bin/sh
3702 EOF
3703 chmod +x $TMPSH >> $logfile 2>&1
3704 if ! $TMPSH >> $logfile 2>&1; then
3705     cat <<EOF
3706 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3707 variable to another directory and make sure that it is not mounted noexec.
3708 EOF
3709     die "Sanity test failed."
3710 fi
3711
3712 armasm_flags(){
3713     for flag; do
3714         case $flag in
3715             # Filter out MSVC cl.exe options from cflags that shouldn't
3716             # be passed to gas-preprocessor
3717             -M[TD]*)                                            ;;
3718             *)                  echo $flag                      ;;
3719         esac
3720    done
3721 }
3722
3723 ccc_flags(){
3724     for flag; do
3725         case $flag in
3726             -std=c99)           echo -c99                       ;;
3727             -mcpu=*)            echo -arch ${flag#*=}           ;;
3728             -mieee)             echo -ieee                      ;;
3729             -O*|-fast)          echo $flag                      ;;
3730             -fno-math-errno)    echo -assume nomath_errno       ;;
3731             -g)                 echo -g3                        ;;
3732             -Wall)              echo -msg_enable level2         ;;
3733             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3734             -Wl,*)              echo $flag                      ;;
3735             -f*|-W*)                                            ;;
3736             *)                  echo $flag                      ;;
3737         esac
3738    done
3739 }
3740
3741 cparser_flags(){
3742     for flag; do
3743         case $flag in
3744             -Wno-switch)             echo -Wno-switch-enum ;;
3745             -Wno-format-zero-length) ;;
3746             -Wdisabled-optimization) ;;
3747             -Wno-pointer-sign)       echo -Wno-other ;;
3748             *)                       echo $flag ;;
3749         esac
3750     done
3751 }
3752
3753 msvc_common_flags(){
3754     for flag; do
3755         case $flag in
3756             # In addition to specifying certain flags under the compiler
3757             # specific filters, they must be specified here as well or else the
3758             # generic catch all at the bottom will print the original flag.
3759             -Wall)                ;;
3760             -std=c99)             ;;
3761             # Common flags
3762             -fomit-frame-pointer) ;;
3763             -g)                   echo -Z7 ;;
3764             -fno-math-errno)      ;;
3765             -fno-common)          ;;
3766             -fno-signed-zeros)    ;;
3767             -fPIC)                ;;
3768             -mthumb)              ;;
3769             -march=*)             ;;
3770             -lz)                  echo zlib.lib ;;
3771             -lavifil32)           echo vfw32.lib ;;
3772             -lavicap32)           echo vfw32.lib user32.lib ;;
3773             -lx264)               echo libx264.lib ;;
3774             -l*)                  echo ${flag#-l}.lib ;;
3775             -LARGEADDRESSAWARE)   echo $flag ;;
3776             -L*)                  echo -libpath:${flag#-L} ;;
3777             *)                    echo $flag ;;
3778         esac
3779     done
3780 }
3781
3782 msvc_flags(){
3783     msvc_common_flags "$@"
3784     for flag; do
3785         case $flag in
3786             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3787                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3788                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3789                                        -wd4307 \
3790                                        -wd4273 -wd4554 -wd4701 ;;
3791         esac
3792     done
3793 }
3794
3795 icl_flags(){
3796     msvc_common_flags "$@"
3797     for flag; do
3798         case $flag in
3799             # Despite what Intel's documentation says -Wall, which is supported
3800             # on Windows, does enable remarks so disable them here.
3801             -Wall)                echo $flag -Qdiag-disable:remark ;;
3802             -std=c99)             echo -Qstd=c99 ;;
3803             -flto)                echo -ipo ;;
3804         esac
3805     done
3806 }
3807
3808 icc_flags(){
3809     for flag; do
3810         case $flag in
3811             -flto)                echo -ipo ;;
3812             *)                    echo $flag ;;
3813         esac
3814     done
3815 }
3816
3817 pgi_flags(){
3818     for flag; do
3819         case $flag in
3820             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3821             -fomit-frame-pointer) echo -Mnoframe ;;
3822             -g)                   echo -gopt ;;
3823             *)                    echo $flag ;;
3824         esac
3825     done
3826 }
3827
3828 suncc_flags(){
3829     for flag; do
3830         case $flag in
3831             -march=*|-mcpu=*)
3832                 case "${flag#*=}" in
3833                     native)                   echo -xtarget=native       ;;
3834                     v9|niagara)               echo -xarch=sparc          ;;
3835                     ultrasparc)               echo -xarch=sparcvis       ;;
3836                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3837                     i586|pentium)             echo -xchip=pentium        ;;
3838                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3839                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3840                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3841                     pentium4*)          echo -xtarget=pentium4           ;;
3842                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3843                     *-sse3)             echo -xarch=sse3                 ;;
3844                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3845                     bonnell)                   echo -xarch=ssse3         ;;
3846                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3847                     westmere)                  echo -xtarget=westmere    ;;
3848                     silvermont)                echo -xarch=sse4_2        ;;
3849                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3850                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3851                                                echo -xarch=avx           ;;
3852                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3853                     btver1)                    echo -xarch=amdsse4a      ;;
3854                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3855                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3856                     k8|opteron|athlon64|athlon-fx)
3857                                                echo -xarch=sse2a         ;;
3858                     athlon*)                   echo -xarch=pentium_proa  ;;
3859                 esac
3860                 ;;
3861             -std=c99)             echo -xc99              ;;
3862             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3863             -fPIC)                echo -KPIC -xcode=pic32 ;;
3864             -W*,*)                echo $flag              ;;
3865             -f*-*|-W*|-mimpure-text)                      ;;
3866             -shared)              echo -G                 ;;
3867             *)                    echo $flag              ;;
3868         esac
3869     done
3870 }
3871
3872 tms470_flags(){
3873     for flag; do
3874         case $flag in
3875             -march=*|-mcpu=*)
3876                 case "${flag#*=}" in
3877                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3878                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3879                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3880                     armv6*|arm11*)          echo -mv=6   ;;
3881                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3882                                             echo -mv=5e  ;;
3883                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3884                 esac
3885                 ;;
3886             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3887             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3888             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3889             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3890             -msoft-float)   echo --float_support=vfplib       ;;
3891             -O[0-3]|-mf=*)  echo $flag                        ;;
3892             -g)             echo -g -mn                       ;;
3893             -pds=*)         echo $flag                        ;;
3894             -D*|-I*)        echo $flag                        ;;
3895             --gcc|--abi=*)  echo $flag                        ;;
3896             -me)            echo $flag                        ;;
3897         esac
3898     done
3899 }
3900
3901 probe_cc(){
3902     pfx=$1
3903     _cc=$2
3904     first=$3
3905
3906     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3907     unset _ld_o _ldflags _ld_lib _ld_path
3908     unset _depflags _DEPCMD _DEPFLAGS
3909     _flags_filter=echo
3910
3911     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3912         true # no-op to avoid reading stdin in following checks
3913     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3914         _type=llvm_gcc
3915         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3916         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3917         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3918         _cflags_speed='-O3'
3919         _cflags_size='-Os'
3920     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3921         _type=gcc
3922         gcc_version=$($_cc --version | head -n1)
3923         gcc_basever=$($_cc -dumpversion)
3924         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3925         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3926         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3927         case $gcc_basever in
3928             2) ;;
3929             2.*) ;;
3930             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3931         esac
3932         if [ "$first" = true ]; then
3933             case $gcc_basever in
3934                 4.2*)
3935                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3936             esac
3937         fi
3938         _cflags_speed='-O3'
3939         _cflags_size='-Os'
3940     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3941         _type=icc
3942         _ident=$($_cc --version | head -n1)
3943         _depflags='-MMD'
3944         _cflags_speed='-O3'
3945         _cflags_size='-Os'
3946         _cflags_noopt='-O1'
3947         _flags_filter=icc_flags
3948     elif $_cc -v 2>&1 | grep -q xlc; then
3949         _type=xlc
3950         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3951         _cflags_speed='-O5'
3952         _cflags_size='-O5 -qcompact'
3953     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3954         _type=ccc
3955         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3956         _DEPFLAGS='-M'
3957         _cflags_speed='-fast'
3958         _cflags_size='-O1'
3959         _flags_filter=ccc_flags
3960     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3961         test -d "$sysroot" || die "No valid sysroot specified."
3962         _type=armcc
3963         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3964         armcc_conf="$PWD/armcc.conf"
3965         $_cc --arm_linux_configure                 \
3966              --arm_linux_config_file="$armcc_conf" \
3967              --configure_sysroot="$sysroot"        \
3968              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3969              die "Error creating armcc configuration file."
3970         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3971         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3972         as_default="${cross_prefix}gcc"
3973         _depflags='-MMD'
3974         _cflags_speed='-O3'
3975         _cflags_size='-Os'
3976     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3977         _type=tms470
3978         _ident=$($_cc -version | head -n1 | tr -s ' ')
3979         _flags='--gcc --abi=eabi -me'
3980         _cc_e='-ppl -fe=$@'
3981         _cc_o='-fe=$@'
3982         _depflags='-ppa -ppd=$(@:.o=.d)'
3983         _cflags_speed='-O3 -mf=5'
3984         _cflags_size='-O3 -mf=2'
3985         _flags_filter=tms470_flags
3986     elif $_cc -v 2>&1 | grep -q clang; then
3987         _type=clang
3988         _ident=$($_cc --version 2>/dev/null | head -n1)
3989         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3990         _cflags_speed='-O3'
3991         _cflags_size='-Os'
3992     elif $_cc -V 2>&1 | grep -q Sun; then
3993         _type=suncc
3994         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3995         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3996         _DEPFLAGS='-xM1 -xc99'
3997         _ldflags='-std=c99'
3998         _cflags_speed='-O5'
3999         _cflags_size='-O5 -xspace'
4000         _flags_filter=suncc_flags
4001     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4002         _type=pathscale
4003         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4004         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4005         _cflags_speed='-O2'
4006         _cflags_size='-Os'
4007         _flags_filter='filter_out -Wdisabled-optimization'
4008     elif $_cc -v 2>&1 | grep -q Open64; then
4009         _type=open64
4010         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4011         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4012         _cflags_speed='-O2'
4013         _cflags_size='-Os'
4014         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4015     elif $_cc -V 2>&1 | grep -q Portland; then
4016         _type=pgi
4017         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4018         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4019         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4020         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4021         _cflags_noopt="-O"
4022         _flags_filter=pgi_flags
4023     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4024         _type=armasm
4025         _ident=$($_cc | head -n1)
4026         # 4509: "This form of conditional instruction is deprecated"
4027         _flags="-nologo -ignore 4509"
4028         _flags_filter=armasm_flags
4029     elif $_cc 2>&1 | grep -q Intel; then
4030         _type=icl
4031         _ident=$($_cc 2>&1 | head -n1)
4032         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4033         # Not only is O3 broken on 13.x+ but it is slower on all previous
4034         # versions (tested) as well.
4035         _cflags_speed="-O2"
4036         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4037         if $_cc 2>&1 | grep -q Linker; then
4038             _ld_o='-out:$@'
4039         else
4040             _ld_o='-Fe$@'
4041         fi
4042         _cc_o='-Fo$@'
4043         _cc_e='-P'
4044         _flags_filter=icl_flags
4045         _ld_lib='lib%.a'
4046         _ld_path='-libpath:'
4047         # -Qdiag-error to make icl error when seeing certain unknown arguments
4048         _flags='-nologo -Qdiag-error:4044,10157'
4049         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4050         # with MSVC which enables it by default.
4051         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4052         disable stripping
4053     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4054         _type=msvc
4055         _ident=$($_cc 2>&1 | head -n1)
4056         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4057         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4058         _cflags_speed="-O2"
4059         _cflags_size="-O1"
4060         if $_cc -nologo- 2>&1 | grep -q Linker; then
4061             _ld_o='-out:$@'
4062         else
4063             _ld_o='-Fe$@'
4064         fi
4065         _cc_o='-Fo$@'
4066         _cc_e='-P -Fi$@'
4067         _flags_filter=msvc_flags
4068         _ld_lib='lib%.a'
4069         _ld_path='-libpath:'
4070         _flags='-nologo'
4071         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4072         disable stripping
4073     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4074         _type=cparser
4075         _ident=$($_cc --version | head -n1)
4076         _depflags='-MMD'
4077         _cflags_speed='-O4'
4078         _cflags_size='-O2'
4079         _flags_filter=cparser_flags
4080     fi
4081
4082     eval ${pfx}_type=\$_type
4083     eval ${pfx}_ident=\$_ident
4084 }
4085
4086 set_ccvars(){
4087     eval ${1}_C=\${_cc_c-\${${1}_C}}
4088     eval ${1}_E=\${_cc_e-\${${1}_E}}
4089     eval ${1}_O=\${_cc_o-\${${1}_O}}
4090
4091     if [ -n "$_depflags" ]; then
4092         eval ${1}_DEPFLAGS=\$_depflags
4093     else
4094         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4095         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4096         eval DEP${1}FLAGS=\$_flags
4097     fi
4098 }
4099
4100 probe_cc cc "$cc" "true"
4101 cflags_filter=$_flags_filter
4102 cflags_speed=$_cflags_speed
4103 cflags_size=$_cflags_size
4104 cflags_noopt=$_cflags_noopt
4105 add_cflags $_flags $_cflags
4106 cc_ldflags=$_ldflags
4107 set_ccvars CC
4108
4109 probe_cc hostcc "$host_cc"
4110 host_cflags_filter=$_flags_filter
4111 add_host_cflags  $_flags $_cflags
4112 set_ccvars HOSTCC
4113
4114 test -n "$cc_type" && enable $cc_type ||
4115     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4116
4117 : ${as_default:=$cc}
4118 : ${objcc_default:=$cc}
4119 : ${dep_cc_default:=$cc}
4120 : ${ld_default:=$cc}
4121 : ${host_ld_default:=$host_cc}
4122 set_default ar as objcc dep_cc ld ln_s host_ld windres
4123
4124 probe_cc as "$as"
4125 asflags_filter=$_flags_filter
4126 add_asflags $_flags $_cflags
4127 set_ccvars AS
4128
4129 probe_cc objcc "$objcc"
4130 objcflags_filter=$_flags_filter
4131 add_objcflags $_flags $_cflags
4132 set_ccvars OBJC
4133
4134 probe_cc ld "$ld"
4135 ldflags_filter=$_flags_filter
4136 add_ldflags $_flags $_ldflags
4137 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4138 LD_O=${_ld_o-$LD_O}
4139 LD_LIB=${_ld_lib-$LD_LIB}
4140 LD_PATH=${_ld_path-$LD_PATH}
4141
4142 probe_cc hostld "$host_ld"
4143 host_ldflags_filter=$_flags_filter
4144 add_host_ldflags $_flags $_ldflags
4145 HOSTLD_O=${_ld_o-$HOSTLD_O}
4146
4147 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4148     probe_cc depcc "$dep_cc"
4149     CCDEP=${_DEPCMD:-$DEPCMD}
4150     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4151     DEPCCFLAGS=$_flags
4152 fi
4153
4154 if $ar 2>&1 | grep -q Microsoft; then
4155     arflags="-nologo"
4156     ar_o='-out:$@'
4157 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4158     arflags="rq"
4159     ar_o='$@'
4160 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4161     arflags='-Xany -r -c'
4162     ar_o='$@'
4163 elif $ar 2>&1 | grep -q "\[D\] "; then
4164     arflags="rcD"
4165     ar_o='$@'
4166 else
4167     arflags="rc"
4168     ar_o='$@'
4169 fi
4170
4171 add_cflags $extra_cflags
4172 add_cxxflags $extra_cxxflags
4173 add_objcflags $extra_objcflags
4174 add_asflags $extra_cflags
4175
4176 if test -n "$sysroot"; then
4177     case "$cc_type" in
4178         gcc|llvm_gcc|clang)
4179             add_cppflags --sysroot="$sysroot"
4180             add_ldflags --sysroot="$sysroot"
4181 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4182             add_cppflags -isysroot "$sysroot"
4183             add_ldflags -isysroot "$sysroot"
4184         ;;
4185         tms470)
4186             add_cppflags -I"$sysinclude"
4187             add_ldflags  --sysroot="$sysroot"
4188         ;;
4189     esac
4190 fi
4191
4192 if test "$cpu" = host; then
4193     enabled cross_compile &&
4194         die "--cpu=host makes no sense when cross-compiling."
4195
4196     case "$cc_type" in
4197         gcc|llvm_gcc)
4198             check_native(){
4199                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4200                 sed -n "/cc1.*$1=/{
4201                             s/.*$1=\\([^ ]*\\).*/\\1/
4202                             p
4203                             q
4204                         }" $TMPE
4205             }
4206             cpu=$(check_native -march || check_native -mcpu)
4207         ;;
4208         clang)
4209             check_native(){
4210                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4211                 sed -n "/cc1.*-target-cpu /{
4212                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4213                             p
4214                             q
4215                         }" $TMPE
4216             }
4217             cpu=$(check_native -march)
4218         ;;
4219     esac
4220
4221     test "${cpu:-host}" = host &&
4222         die "--cpu=host not supported with compiler $cc"
4223 fi
4224
4225 # Deal with common $arch aliases
4226 case "$arch" in
4227     aarch64|arm64)
4228         arch="aarch64"
4229     ;;
4230     arm*|iPad*|iPhone*)
4231         arch="arm"
4232     ;;
4233     mips*|IP*)
4234         case "$arch" in
4235         *el)
4236             add_cppflags -EL
4237             add_ldflags -EL
4238         ;;
4239         *eb)
4240             add_cppflags -EB
4241             add_ldflags -EB
4242         ;;
4243         esac
4244         arch="mips"
4245     ;;
4246     parisc*|hppa*)
4247         arch="parisc"
4248     ;;
4249     "Power Macintosh"|ppc*|powerpc*)
4250         arch="ppc"
4251     ;;
4252     s390|s390x)
4253         arch="s390"
4254     ;;
4255     sh4|sh)
4256         arch="sh4"
4257     ;;
4258     sun4*|sparc*)
4259         arch="sparc"
4260     ;;
4261     tilegx|tile-gx)
4262         arch="tilegx"
4263     ;;
4264     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4265         arch="x86"
4266     ;;
4267 esac
4268
4269 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4270 enable $arch
4271
4272 # Add processor-specific flags
4273 if enabled aarch64; then
4274
4275     case $cpu in
4276         armv*)
4277             cpuflags="-march=$cpu"
4278         ;;
4279         *)
4280             cpuflags="-mcpu=$cpu"
4281         ;;
4282     esac
4283
4284 elif enabled alpha; then
4285
4286     cpuflags="-mcpu=$cpu"
4287
4288 elif enabled arm; then
4289
4290     check_arm_arch() {
4291         check_cpp_condition stddef.h \
4292             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4293             $cpuflags
4294     }
4295
4296     probe_arm_arch() {
4297         if   check_arm_arch 4;        then echo armv4
4298         elif check_arm_arch 4T;       then echo armv4t
4299         elif check_arm_arch 5;        then echo armv5
4300         elif check_arm_arch 5E;       then echo armv5e
4301         elif check_arm_arch 5T;       then echo armv5t
4302         elif check_arm_arch 5TE;      then echo armv5te
4303         elif check_arm_arch 5TEJ;     then echo armv5te
4304         elif check_arm_arch 6;        then echo armv6
4305         elif check_arm_arch 6J;       then echo armv6j
4306         elif check_arm_arch 6K;       then echo armv6k
4307         elif check_arm_arch 6Z;       then echo armv6z
4308         elif check_arm_arch 6ZK;      then echo armv6zk
4309         elif check_arm_arch 6T2;      then echo armv6t2
4310         elif check_arm_arch 7;        then echo armv7
4311         elif check_arm_arch 7A  7_A;  then echo armv7-a
4312         elif check_arm_arch 7S;       then echo armv7-a
4313         elif check_arm_arch 7R  7_R;  then echo armv7-r
4314         elif check_arm_arch 7M  7_M;  then echo armv7-m
4315         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4316         elif check_arm_arch 8A  8_A;  then echo armv8-a
4317         fi
4318     }
4319
4320     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4321
4322     case $cpu in
4323         armv*)
4324             cpuflags="-march=$cpu"
4325             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4326         ;;
4327         *)
4328             cpuflags="-mcpu=$cpu"
4329             case $cpu in
4330                 cortex-a*)                               subarch=armv7a  ;;
4331                 cortex-r*)                               subarch=armv7r  ;;
4332                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4333                 arm11*)                                  subarch=armv6   ;;
4334                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4335                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4336                 *)                             subarch=$(probe_arm_arch) ;;
4337             esac
4338         ;;
4339     esac
4340
4341     case "$subarch" in
4342         armv5t*)    enable fast_clz                ;;
4343         armv[6-8]*)
4344             enable fast_clz
4345             disabled fast_unaligned || enable fast_unaligned
4346             ;;
4347     esac
4348
4349 elif enabled avr32; then
4350
4351     case $cpu in
4352         ap7[02]0[0-2])
4353             subarch="avr32_ap"
4354             cpuflags="-mpart=$cpu"
4355         ;;
4356         ap)
4357             subarch="avr32_ap"
4358             cpuflags="-march=$cpu"
4359         ;;
4360         uc3[ab]*)
4361             subarch="avr32_uc"
4362             cpuflags="-mcpu=$cpu"
4363         ;;
4364         uc)
4365             subarch="avr32_uc"
4366             cpuflags="-march=$cpu"
4367         ;;
4368     esac
4369
4370 elif enabled bfin; then
4371
4372     cpuflags="-mcpu=$cpu"
4373
4374 elif enabled mips; then
4375
4376     cpuflags="-march=$cpu"
4377
4378     if [ "$cpu" != "generic" ]; then
4379         disable mips32r2
4380         disable mips32r5
4381         disable mips64r2
4382         disable mips32r6
4383         disable mips64r6
4384         disable loongson2
4385         disable loongson3
4386
4387         case $cpu in
4388             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4389                 enable mips32r2
4390                 disable msa
4391             ;;
4392             p5600|i6400|p6600)
4393                 disable mipsdsp
4394                 disable mipsdspr2
4395             ;;
4396             loongson*)
4397                 enable loongson2
4398                 enable loongson3
4399                 enable local_aligned_8 local_aligned_16 local_aligned_32
4400                 enable simd_align_16
4401                 enable fast_64bit
4402                 enable fast_clz
4403                 enable fast_cmov
4404                 enable fast_unaligned
4405                 disable aligned_stack
4406                 disable mipsfpu
4407                 disable mipsdsp
4408                 disable mipsdspr2
4409                 case $cpu in
4410                     loongson3*)
4411                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4412                     ;;
4413                     loongson2e)
4414                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4415                     ;;
4416                     loongson2f)
4417                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4418                     ;;
4419                 esac
4420             ;;
4421             *)
4422                 # Unknown CPU. Disable everything.
4423                 warn "unknown CPU. Disabling all MIPS optimizations."
4424                 disable mipsfpu
4425                 disable mipsdsp
4426                 disable mipsdspr2
4427                 disable msa
4428                 disable mmi
4429             ;;
4430         esac
4431
4432         case $cpu in
4433             24kc)
4434                 disable mipsfpu
4435                 disable mipsdsp
4436                 disable mipsdspr2
4437             ;;
4438             24kf*)
4439                 disable mipsdsp
4440                 disable mipsdspr2
4441             ;;
4442             24kec|34kc|1004kc)
4443                 disable mipsfpu
4444                 disable mipsdspr2
4445             ;;
4446             24kef*|34kf*|1004kf*)
4447                 disable mipsdspr2
4448             ;;
4449             74kc)
4450                 disable mipsfpu
4451             ;;
4452             p5600)
4453                 enable mips32r5
4454                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4455             ;;
4456             i6400)
4457                 enable mips64r6
4458                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4459             ;;
4460             p6600)
4461                 enable mips64r6
4462                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4463             ;;
4464         esac
4465     else
4466         # We do not disable anything. Is up to the user to disable the unwanted features.
4467         warn 'generic cpu selected'
4468     fi
4469
4470 elif enabled ppc; then
4471
4472     disable ldbrx
4473
4474     case $(tolower $cpu) in
4475         601|ppc601|powerpc601)
4476             cpuflags="-mcpu=601"
4477             disable altivec
4478         ;;
4479         603*|ppc603*|powerpc603*)
4480             cpuflags="-mcpu=603"
4481             disable altivec
4482         ;;
4483         604*|ppc604*|powerpc604*)
4484             cpuflags="-mcpu=604"
4485             disable altivec
4486         ;;
4487         g3|75*|ppc75*|powerpc75*)
4488             cpuflags="-mcpu=750"
4489             disable altivec
4490         ;;
4491         g4|745*|ppc745*|powerpc745*)
4492             cpuflags="-mcpu=7450"
4493             disable vsx
4494         ;;
4495         74*|ppc74*|powerpc74*)
4496             cpuflags="-mcpu=7400"
4497             disable vsx
4498         ;;
4499         g5|970|ppc970|powerpc970)
4500             cpuflags="-mcpu=970"
4501             disable vsx
4502         ;;
4503         power[3-6]*)
4504             cpuflags="-mcpu=$cpu"
4505             disable vsx
4506         ;;
4507         power[7-8]*)
4508             cpuflags="-mcpu=$cpu"
4509         ;;
4510         cell)
4511             cpuflags="-mcpu=cell"
4512             enable ldbrx
4513             disable vsx
4514         ;;
4515         e500mc)
4516             cpuflags="-mcpu=e500mc"
4517             disable altivec
4518         ;;
4519         e500v2)
4520             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4521             disable altivec
4522             disable dcbzl
4523         ;;
4524         e500)
4525             cpuflags="-mcpu=8540 -mhard-float"
4526             disable altivec
4527             disable dcbzl
4528         ;;
4529     esac
4530
4531 elif enabled sparc; then
4532
4533     case $cpu in
4534         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4535             cpuflags="-mcpu=$cpu"
4536         ;;
4537         ultrasparc*|niagara[234])
4538             cpuflags="-mcpu=$cpu"
4539         ;;
4540     esac
4541
4542 elif enabled x86; then
4543
4544     case $cpu in
4545         i[345]86|pentium)
4546             cpuflags="-march=$cpu"
4547             disable i686
4548             disable mmx
4549         ;;
4550         # targets that do NOT support nopl and conditional mov (cmov)
4551         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4552             cpuflags="-march=$cpu"
4553             disable i686
4554         ;;
4555         # targets that do support nopl and conditional mov (cmov)
4556         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4557         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4558         |amdfam10|barcelona|b[dt]ver*|znver*)
4559             cpuflags="-march=$cpu"
4560             enable i686
4561             enable fast_cmov
4562         ;;
4563         # targets that do support conditional mov but on which it's slow
4564         pentium4|pentium4m|prescott|nocona)
4565             cpuflags="-march=$cpu"
4566             enable i686
4567             disable fast_cmov
4568         ;;
4569     esac
4570
4571 fi
4572
4573 if [ "$cpu" != generic ]; then
4574     add_cflags  $cpuflags
4575     add_asflags $cpuflags
4576     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4577 fi
4578
4579 # compiler sanity check
4580 check_exec <<EOF
4581 int main(void){ return 0; }
4582 EOF
4583 if test "$?" != 0; then
4584     echo "$cc is unable to create an executable file."
4585     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4586         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4587         echo "Only do this if you know what cross compiling means."
4588     fi
4589     die "C compiler test failed."
4590 fi
4591
4592 add_cppflags -D_ISOC99_SOURCE
4593 add_cxxflags -D__STDC_CONSTANT_MACROS
4594 add_cxxflags -std=c++98
4595
4596 # some compilers silently accept -std=c11, so we also need to check that the
4597 # version macro is defined properly
4598 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
4599     add_cflags -std=c11
4600 else
4601     check_cflags -std=c99
4602 fi
4603
4604 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4605 #include <stdlib.h>
4606 EOF
4607 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4608 #include <stdlib.h>
4609 EOF
4610
4611 add_host_cppflags -D_ISOC99_SOURCE
4612 check_host_cflags -std=c99
4613 check_host_cflags -Wall
4614 check_host_cflags -O3
4615
4616 check_64bit(){
4617     arch32=$1
4618     arch64=$2
4619     expr=$3
4620     check_code cc "" "int test[2*($expr) - 1]" &&
4621         subarch=$arch64 || subarch=$arch32
4622 }
4623
4624 case "$arch" in
4625     aarch64|alpha|ia64)
4626         spic=$shared
4627     ;;
4628     mips)
4629         check_64bit mips mips64 '_MIPS_SIM > 1'
4630         spic=$shared
4631     ;;
4632     parisc)
4633         check_64bit parisc parisc64 'sizeof(void *) > 4'
4634         spic=$shared
4635     ;;
4636     ppc)
4637         check_64bit ppc ppc64 'sizeof(void *) > 4'
4638         spic=$shared
4639     ;;
4640     s390)
4641         check_64bit s390 s390x 'sizeof(void *) > 4'
4642         spic=$shared
4643     ;;
4644     sparc)
4645         check_64bit sparc sparc64 'sizeof(void *) > 4'
4646         spic=$shared
4647     ;;
4648     x86)
4649         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4650         # Treat x32 as x64 for now. Note it also needs spic=$shared
4651         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4652             subarch=x86_64
4653         if test "$subarch" = "x86_64"; then
4654             spic=$shared
4655         fi
4656     ;;
4657     ppc)
4658         check_cc <<EOF && subarch="ppc64"
4659         int test[(int)sizeof(char*) - 7];
4660 EOF
4661     ;;
4662 esac
4663
4664 enable $subarch
4665 enabled spic && enable_weak pic
4666
4667 # OS specific
4668 case $target_os in
4669     aix)
4670         SHFLAGS=-shared
4671         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4672         enabled shared && add_ldflags -Wl,-brtl
4673         ;;
4674     android)
4675         disable symver
4676         enable section_data_rel_ro
4677         SLIB_INSTALL_NAME='$(SLIBNAME)'
4678         SLIB_INSTALL_LINKS=
4679         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4680         ;;
4681     haiku)
4682         prefix_default="/boot/common"
4683         network_extralibs="-lnetwork"
4684         host_libs=
4685         ;;
4686     sunos)
4687         SHFLAGS='-shared -Wl,-h,$$(@F)'
4688         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4689         network_extralibs="-lsocket -lnsl"
4690         add_cppflags -D__EXTENSIONS__
4691         # When using suncc to build, the Solaris linker will mark
4692         # an executable with each instruction set encountered by
4693         # the Solaris assembler.  As our libraries contain their own
4694         # guards for processor-specific code, instead suppress
4695         # generation of the HWCAPS ELF section on Solaris x86 only.
4696         enabled_all suncc x86 &&
4697             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4698             add_ldflags -Wl,-M,mapfile
4699         nm_default='nm -P -g'
4700         version_script='-M'
4701         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4702         ;;
4703     netbsd)
4704         disable symver
4705         oss_indev_extralibs="-lossaudio"
4706         oss_outdev_extralibs="-lossaudio"
4707         enabled gcc || check_ldflags -Wl,-zmuldefs
4708         ;;
4709     openbsd|bitrig)
4710         disable symver
4711         SHFLAGS='-shared'
4712         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4713         SLIB_INSTALL_LINKS=
4714         oss_indev_extralibs="-lossaudio"
4715         oss_outdev_extralibs="-lossaudio"
4716         ;;
4717     dragonfly)
4718         disable symver
4719         ;;
4720     freebsd)
4721         ;;
4722     bsd/os)
4723         add_extralibs -lpoll -lgnugetopt
4724         strip="strip -d"
4725         ;;
4726     darwin)
4727         enabled ppc && add_asflags -force_cpusubtype_ALL
4728         install_name_dir_default='$(SHLIBDIR)'
4729         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4730         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4731         strip="${strip} -x"
4732         add_ldflags -Wl,-dynamic,-search_paths_first
4733         SLIBSUF=".dylib"
4734         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4735         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4736         objformat="macho"
4737         enabled x86_64 && objformat="macho64"
4738         enabled_any pic shared x86_64 ||
4739             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4740         check_header dispatch/dispatch.h &&
4741             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4742         version_script='-exported_symbols_list'
4743         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4744         ;;
4745     msys*)
4746         die "Native MSYS builds are discouraged, please use the MINGW environment."
4747         ;;
4748     mingw32*|mingw64*)
4749         if test $target_os = "mingw32ce"; then
4750             disable network
4751         else
4752             target_os=mingw32
4753         fi
4754         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4755         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4756         LIBTARGET=i386
4757         if enabled x86_64; then
4758             LIBTARGET="i386:x86-64"
4759         elif enabled arm; then
4760             LIBTARGET=arm-wince
4761         fi
4762         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4763         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4764         shlibdir_default="$bindir_default"
4765         SLIBPREF=""
4766         SLIBSUF=".dll"
4767         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4768         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4769         dlltool="${cross_prefix}dlltool"
4770         if check_cmd lib.exe -list; then
4771             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4772             if enabled x86_64; then
4773                 LIBTARGET=x64
4774             fi
4775         elif check_cmd $dlltool --version; then
4776             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4777         fi
4778         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4779         SLIB_INSTALL_LINKS=
4780         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4781         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4782         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4783         objformat="win32"
4784         ranlib=:
4785         enable dos_paths
4786         check_ldflags -Wl,--nxcompat,--dynamicbase
4787         # Lets work around some stupidity in binutils.
4788         # ld will strip relocations from executables even though we need them
4789         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4790         # however ld then forgets what the entry point should be (oops) so we
4791         # have to manually (re)set it.
4792         if enabled x86_32; then
4793             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4794         elif enabled x86_64; then
4795             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4796             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4797             # Set image base >4GB for extra entropy with HEASLR
4798             add_ldexeflags -Wl,--image-base,0x140000000
4799             append SHFLAGS -Wl,--image-base,0x180000000
4800         fi
4801         ;;
4802     win32|win64)
4803         disable symver
4804         if enabled shared; then
4805             # Link to the import library instead of the normal static library
4806             # for shared libs.
4807             LD_LIB='%.lib'
4808             # Cannot build both shared and static libs with MSVC or icl.
4809             disable static
4810         fi
4811         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4812         shlibdir_default="$bindir_default"
4813         SLIBPREF=""
4814         SLIBSUF=".dll"
4815         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4816         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4817         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4818         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4819         SLIB_INSTALL_LINKS=
4820         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4821         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4822         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4823         objformat="win32"
4824         ranlib=:
4825         enable dos_paths
4826         ;;
4827     cygwin*)
4828         target_os=cygwin
4829         shlibdir_default="$bindir_default"
4830         SLIBPREF="cyg"
4831         SLIBSUF=".dll"
4832         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4833         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4834         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4835         SLIB_INSTALL_LINKS=
4836         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4837         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4838         objformat="win32"
4839         enable dos_paths
4840         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4841         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4842         ;;
4843     *-dos|freedos|opendos)
4844         network_extralibs="-lsocket"
4845         objformat="coff"