Merge commit 'f62bb216ac4cfbbff16108c6bac35a0282532972'
[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   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
300   --enable-cuvid           enable 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: $condition"
1188 #endif
1189 EOF
1190 }
1191
1192 check_lib(){
1193     log check_lib "$@"
1194     header="$1"
1195     func="$2"
1196     shift 2
1197     check_header $header && check_func $func "$@" && add_extralibs "$@"
1198 }
1199
1200 check_lib2(){
1201     log check_lib2 "$@"
1202     headers="$1"
1203     funcs="$2"
1204     shift 2
1205     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1206 }
1207
1208 check_lib_cpp(){
1209     log check_lib_cpp "$@"
1210     headers="$1"
1211     classes="$2"
1212     shift 2
1213     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1214 }
1215
1216 check_pkg_config(){
1217     log check_pkg_config "$@"
1218     pkgandversion="$1"
1219     pkg="${1%% *}"
1220     headers="$2"
1221     funcs="$3"
1222     shift 3
1223     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1224     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1225     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1226     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1227         set_safe "${pkg}_cflags" $pkg_cflags   &&
1228         set_safe "${pkg}_libs"   $pkg_libs
1229 }
1230
1231 check_exec(){
1232     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1233 }
1234
1235 check_exec_crash(){
1236     code=$(cat)
1237
1238     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1239     # are safe but may not be available everywhere.  Thus we use
1240     # raise(SIGTERM) instead.  The check is run in a subshell so we
1241     # can redirect the "Terminated" message from the shell.  SIGBUS
1242     # is not defined by standard C so it is used conditionally.
1243
1244     (check_exec "$@") >> $logfile 2>&1 <<EOF
1245 #include <signal.h>
1246 static void sighandler(int sig){
1247     raise(SIGTERM);
1248 }
1249 int foo(void){
1250     $code
1251 }
1252 int (*func_ptr)(void) = foo;
1253 int main(void){
1254     signal(SIGILL, sighandler);
1255     signal(SIGFPE, sighandler);
1256     signal(SIGSEGV, sighandler);
1257 #ifdef SIGBUS
1258     signal(SIGBUS, sighandler);
1259 #endif
1260     return func_ptr();
1261 }
1262 EOF
1263 }
1264
1265 check_type(){
1266     log check_type "$@"
1267     headers=$1
1268     type=$2
1269     shift 2
1270     disable_safe "$type"
1271     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1272 }
1273
1274 check_struct(){
1275     log check_struct "$@"
1276     headers=$1
1277     struct=$2
1278     member=$3
1279     shift 3
1280     disable_safe "${struct}_${member}"
1281     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1282         enable_safe "${struct}_${member}"
1283 }
1284
1285 check_builtin(){
1286     log check_builtin "$@"
1287     name=$1
1288     headers=$2
1289     builtin=$3
1290     shift 3
1291     disable "$name"
1292     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1293 }
1294
1295 check_compile_assert(){
1296     log check_compile_assert "$@"
1297     name=$1
1298     headers=$2
1299     condition=$3
1300     shift 3
1301     disable "$name"
1302     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1303 }
1304
1305 require(){
1306     name="$1"
1307     header="$2"
1308     func="$3"
1309     shift 3
1310     check_lib $header $func "$@" || die "ERROR: $name not found"
1311 }
1312
1313 require2(){
1314     name="$1"
1315     headers="$2"
1316     func="$3"
1317     shift 3
1318     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1319 }
1320
1321 require_cpp(){
1322     name="$1"
1323     headers="$2"
1324     classes="$3"
1325     shift 3
1326     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1327 }
1328
1329 use_pkg_config(){
1330     pkg="$1"
1331     check_pkg_config "$@" || return 1
1332     add_cflags    $(get_safe "${pkg}_cflags")
1333     add_extralibs $(get_safe "${pkg}_libs")
1334 }
1335
1336 require_pkg_config(){
1337     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1338 }
1339
1340 require_libfreetype(){
1341     log require_libfreetype "$@"
1342     pkg="freetype2"
1343     check_cmd $pkg_config --exists --print-errors $pkg \
1344       || die "ERROR: $pkg not found"
1345     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1346     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1347     {
1348         echo "#include <ft2build.h>"
1349         echo "#include FT_FREETYPE_H"
1350         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1351         echo "int main(void) { return 0; }"
1352     } | check_ld "cc" $pkg_cflags $pkg_libs \
1353       && set_safe "${pkg}_cflags" $pkg_cflags \
1354       && set_safe "${pkg}_libs"   $pkg_libs \
1355       || die "ERROR: $pkg not found"
1356     add_cflags    $(get_safe "${pkg}_cflags")
1357     add_extralibs $(get_safe "${pkg}_libs")
1358 }
1359
1360 hostcc_e(){
1361     eval printf '%s\\n' $HOSTCC_E
1362 }
1363
1364 hostcc_o(){
1365     eval printf '%s\\n' $HOSTCC_O
1366 }
1367
1368 check_host_cc(){
1369     log check_host_cc "$@"
1370     cat > $TMPC
1371     log_file $TMPC
1372     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1373 }
1374
1375 check_host_cpp(){
1376     log check_host_cpp "$@"
1377     cat > $TMPC
1378     log_file $TMPC
1379     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1380 }
1381
1382 check_host_cppflags(){
1383     log check_host_cppflags "$@"
1384     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1385 int x;
1386 EOF
1387 }
1388
1389 check_host_cflags(){
1390     log check_host_cflags "$@"
1391     set -- $($host_cflags_filter "$@")
1392     check_host_cc "$@" <<EOF && append host_cflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cpp_condition(){
1398     log check_host_cpp_condition "$@"
1399     header=$1
1400     condition=$2
1401     shift 2
1402     check_host_cpp "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 cp_if_changed(){
1411     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1412     mkdir -p "$(dirname $2)"
1413     $cp_f "$1" "$2"
1414 }
1415
1416 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1417 # system-dependent things.
1418
1419 AVCODEC_COMPONENTS="
1420     bsfs
1421     decoders
1422     encoders
1423     hwaccels
1424     parsers
1425 "
1426
1427 AVDEVICE_COMPONENTS="
1428     indevs
1429     outdevs
1430 "
1431 AVFILTER_COMPONENTS="
1432     filters
1433 "
1434 AVFORMAT_COMPONENTS="
1435     demuxers
1436     muxers
1437     protocols
1438 "
1439
1440 AVRESAMPLE_COMPONENTS=""
1441 AVUTIL_COMPONENTS=""
1442
1443 COMPONENT_LIST="
1444     $AVCODEC_COMPONENTS
1445     $AVDEVICE_COMPONENTS
1446     $AVFILTER_COMPONENTS
1447     $AVFORMAT_COMPONENTS
1448     $AVRESAMPLE_COMPONENTS
1449     $AVUTIL_COMPONENTS
1450 "
1451
1452 EXAMPLE_LIST="
1453     avio_dir_cmd_example
1454     avio_reading_example
1455     decoding_encoding_example
1456     demuxing_decoding_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471
1472 EXTERNAL_LIBRARY_LIST="
1473     avisynth
1474     bzlib
1475     chromaprint
1476     crystalhd
1477     decklink
1478     frei0r
1479     gcrypt
1480     gmp
1481     gnutls
1482     iconv
1483     jni
1484     ladspa
1485     libass
1486     libbluray
1487     libbs2b
1488     libcaca
1489     libcdio
1490     libcelt
1491     libdc1394
1492     libfdk_aac
1493     libflite
1494     libfontconfig
1495     libfreetype
1496     libfribidi
1497     libgme
1498     libgsm
1499     libiec61883
1500     libilbc
1501     libkvazaar
1502     libmodplug
1503     libmp3lame
1504     libnut
1505     libopencore_amrnb
1506     libopencore_amrwb
1507     libopencv
1508     libopenh264
1509     libopenjpeg
1510     libopenmpt
1511     libopus
1512     libpulse
1513     librtmp
1514     librubberband
1515     libschroedinger
1516     libshine
1517     libsmbclient
1518     libsnappy
1519     libsoxr
1520     libspeex
1521     libssh
1522     libtesseract
1523     libtheora
1524     libtwolame
1525     libv4l2
1526     libvidstab
1527     libvo_amrwbenc
1528     libvorbis
1529     libvpx
1530     libwavpack
1531     libwebp
1532     libx264
1533     libx265
1534     libxavs
1535     libxcb
1536     libxcb_shm
1537     libxcb_shape
1538     libxcb_xfixes
1539     libxvid
1540     libzimg
1541     libzmq
1542     libzvbi
1543     lzma
1544     mediacodec
1545     netcdf
1546     openal
1547     opencl
1548     opengl
1549     openssl
1550     schannel
1551     sdl
1552     sdl2
1553     securetransport
1554     videotoolbox
1555     x11grab
1556     xlib
1557     zlib
1558 "
1559
1560 HWACCEL_LIBRARY_LIST="
1561     audiotoolbox
1562     cuda
1563     cuvid
1564     d3d11va
1565     dxva2
1566     libmfx
1567     libnpp
1568     mmal
1569     nvenc
1570     omx
1571     vaapi
1572     vda
1573     vdpau
1574     videotoolbox_hwaccel
1575     xvmc
1576 "
1577
1578 DOCUMENT_LIST="
1579     doc
1580     htmlpages
1581     manpages
1582     podpages
1583     txtpages
1584 "
1585
1586 FEATURE_LIST="
1587     ftrapv
1588     gray
1589     hardcoded_tables
1590     omx_rpi
1591     runtime_cpudetect
1592     safe_bitstream_reader
1593     shared
1594     small
1595     static
1596     swscale_alpha
1597 "
1598
1599 LIBRARY_LIST="
1600     avcodec
1601     avdevice
1602     avfilter
1603     avformat
1604     avresample
1605     avutil
1606     postproc
1607     swresample
1608     swscale
1609 "
1610
1611 LICENSE_LIST="
1612     gpl
1613     nonfree
1614     version3
1615 "
1616
1617 PROGRAM_LIST="
1618     ffplay
1619     ffprobe
1620     ffserver
1621     ffmpeg
1622 "
1623
1624 SUBSYSTEM_LIST="
1625     dct
1626     dwt
1627     error_resilience
1628     faan
1629     fast_unaligned
1630     fft
1631     lsp
1632     lzo
1633     mdct
1634     pixelutils
1635     network
1636     rdft
1637 "
1638
1639 CONFIG_LIST="
1640     $COMPONENT_LIST
1641     $DOCUMENT_LIST
1642     $EXAMPLE_LIST
1643     $EXTERNAL_LIBRARY_LIST
1644     $HWACCEL_LIBRARY_LIST
1645     $FEATURE_LIST
1646     $LICENSE_LIST
1647     $LIBRARY_LIST
1648     $PROGRAM_LIST
1649     $SUBSYSTEM_LIST
1650     fontconfig
1651     memalign_hack
1652     memory_poisoning
1653     neon_clobber_test
1654     pic
1655     pod2man
1656     raise_major
1657     thumb
1658     valgrind_backtrace
1659     xmm_clobber_test
1660 "
1661
1662 THREADS_LIST="
1663     pthreads
1664     os2threads
1665     w32threads
1666 "
1667
1668 ATOMICS_LIST="
1669     atomics_gcc
1670     atomics_suncc
1671     atomics_win32
1672 "
1673
1674 ARCH_LIST="
1675     aarch64
1676     alpha
1677     arm
1678     avr32
1679     avr32_ap
1680     avr32_uc
1681     bfin
1682     ia64
1683     m68k
1684     mips
1685     mips64
1686     parisc
1687     ppc
1688     ppc64
1689     s390
1690     sh4
1691     sparc
1692     sparc64
1693     tilegx
1694     tilepro
1695     tomi
1696     x86
1697     x86_32
1698     x86_64
1699 "
1700
1701 ARCH_EXT_LIST_ARM="
1702     armv5te
1703     armv6
1704     armv6t2
1705     armv8
1706     neon
1707     vfp
1708     vfpv3
1709     setend
1710 "
1711
1712 ARCH_EXT_LIST_MIPS="
1713     mipsfpu
1714     mips32r2
1715     mips32r5
1716     mips64r2
1717     mips32r6
1718     mips64r6
1719     mipsdsp
1720     mipsdspr2
1721     msa
1722 "
1723
1724 ARCH_EXT_LIST_LOONGSON="
1725     loongson2
1726     loongson3
1727     mmi
1728 "
1729
1730 ARCH_EXT_LIST_X86_SIMD="
1731     aesni
1732     amd3dnow
1733     amd3dnowext
1734     avx
1735     avx2
1736     fma3
1737     fma4
1738     mmx
1739     mmxext
1740     sse
1741     sse2
1742     sse3
1743     sse4
1744     sse42
1745     ssse3
1746     xop
1747 "
1748
1749 ARCH_EXT_LIST_PPC="
1750     altivec
1751     dcbzl
1752     ldbrx
1753     power8
1754     ppc4xx
1755     vsx
1756 "
1757
1758 ARCH_EXT_LIST_X86="
1759     $ARCH_EXT_LIST_X86_SIMD
1760     cpunop
1761     i686
1762 "
1763
1764 ARCH_EXT_LIST="
1765     $ARCH_EXT_LIST_ARM
1766     $ARCH_EXT_LIST_PPC
1767     $ARCH_EXT_LIST_X86
1768     $ARCH_EXT_LIST_MIPS
1769     $ARCH_EXT_LIST_LOONGSON
1770 "
1771
1772 ARCH_FEATURES="
1773     aligned_stack
1774     fast_64bit
1775     fast_clz
1776     fast_cmov
1777     local_aligned_8
1778     local_aligned_16
1779     local_aligned_32
1780     simd_align_16
1781 "
1782
1783 BUILTIN_LIST="
1784     atomic_cas_ptr
1785     atomic_compare_exchange
1786     machine_rw_barrier
1787     MemoryBarrier
1788     mm_empty
1789     rdtsc
1790     sarestart
1791     sem_timedwait
1792     sync_val_compare_and_swap
1793 "
1794 HAVE_LIST_CMDLINE="
1795     inline_asm
1796     symver
1797     yasm
1798 "
1799
1800 HAVE_LIST_PUB="
1801     bigendian
1802     fast_unaligned
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     LoadLibrary
1925     localtime_r
1926     lstat
1927     lzo1x_999_compress
1928     mach_absolute_time
1929     MapViewOfFile
1930     memalign
1931     mkstemp
1932     mmap
1933     mprotect
1934     nanosleep
1935     PeekNamedPipe
1936     posix_memalign
1937     pthread_cancel
1938     sched_getaffinity
1939     SetConsoleTextAttribute
1940     SetConsoleCtrlHandler
1941     setmode
1942     setrlimit
1943     Sleep
1944     strerror_r
1945     sysconf
1946     sysctl
1947     usleep
1948     UTGetOSTypeFromString
1949     VirtualAlloc
1950     wglGetProcAddress
1951 "
1952
1953 TOOLCHAIN_FEATURES="
1954     as_dn_directive
1955     as_func
1956     as_object_arch
1957     asm_mod_q
1958     attribute_may_alias
1959     attribute_packed
1960     ebp_available
1961     ebx_available
1962     gnu_as
1963     gnu_windres
1964     ibm_asm
1965     inline_asm_direct_symbol_refs
1966     inline_asm_labels
1967     inline_asm_nonlocal_labels
1968     pragma_deprecated
1969     rsync_contimeout
1970     symver_asm_label
1971     symver_gnu_asm
1972     vfp_args
1973     xform_asm
1974     xmm_clobbers
1975 "
1976
1977 TYPES_LIST="
1978     CONDITION_VARIABLE_Ptr
1979     socklen_t
1980     struct_addrinfo
1981     struct_group_source_req
1982     struct_ip_mreq_source
1983     struct_ipv6_mreq
1984     struct_msghdr_msg_flags
1985     struct_pollfd
1986     struct_rusage_ru_maxrss
1987     struct_sctp_event_subscribe
1988     struct_sockaddr_in6
1989     struct_sockaddr_sa_len
1990     struct_sockaddr_storage
1991     struct_stat_st_mtim_tv_nsec
1992     struct_v4l2_frmivalenum_discrete
1993 "
1994
1995 HAVE_LIST="
1996     $ARCH_EXT_LIST
1997     $(add_suffix _external $ARCH_EXT_LIST)
1998     $(add_suffix _inline   $ARCH_EXT_LIST)
1999     $ARCH_FEATURES
2000     $ATOMICS_LIST
2001     $BUILTIN_LIST
2002     $COMPLEX_FUNCS
2003     $HAVE_LIST_CMDLINE
2004     $HAVE_LIST_PUB
2005     $HEADERS_LIST
2006     $INTRINSICS_LIST
2007     $MATH_FUNCS
2008     $SYSTEM_FUNCS
2009     $THREADS_LIST
2010     $TOOLCHAIN_FEATURES
2011     $TYPES_LIST
2012     atomics_native
2013     dos_paths
2014     dxva2_lib
2015     dxva2api_cobj
2016     libc_msvcrt
2017     libdc1394_1
2018     libdc1394_2
2019     makeinfo
2020     makeinfo_html
2021     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2022     perl
2023     pod2man
2024     sdl2
2025     section_data_rel_ro
2026     texi2html
2027     threads
2028     vaapi_drm
2029     vaapi_x11
2030     vdpau_x11
2031     winrt
2032     xlib
2033 "
2034
2035 # options emitted with CONFIG_ prefix but not available on the command line
2036 CONFIG_EXTRA="
2037     aandcttables
2038     ac3dsp
2039     audio_frame_queue
2040     audiodsp
2041     blockdsp
2042     bswapdsp
2043     cabac
2044     dirac_parse
2045     dvprofile
2046     exif
2047     faandct
2048     faanidct
2049     fdctdsp
2050     flacdsp
2051     fmtconvert
2052     frame_thread_encoder
2053     g722dsp
2054     golomb
2055     gplv3
2056     h263dsp
2057     h264chroma
2058     h264dsp
2059     h264pred
2060     h264qpel
2061     hpeldsp
2062     huffman
2063     huffyuvdsp
2064     huffyuvencdsp
2065     idctdsp
2066     iirfilter
2067     imdct15
2068     intrax8
2069     iso_media
2070     ividsp
2071     jpegtables
2072     lgplv3
2073     libx262
2074     llauddsp
2075     llviddsp
2076     lpc
2077     lzf
2078     me_cmp
2079     mpeg_er
2080     mpegaudio
2081     mpegaudiodsp
2082     mpegvideo
2083     mpegvideoenc
2084     mss34dsp
2085     pixblockdsp
2086     qpeldsp
2087     qsv
2088     qsvdec
2089     qsvenc
2090     rangecoder
2091     riffdec
2092     riffenc
2093     rtpdec
2094     rtpenc_chain
2095     rv34dsp
2096     sinewin
2097     snappy
2098     srtp
2099     startcode
2100     texturedsp
2101     texturedspenc
2102     tpeldsp
2103     vaapi_encode
2104     vc1dsp
2105     videodsp
2106     vp3dsp
2107     vp56dsp
2108     vp8dsp
2109     vt_bt2020
2110     wma_freqs
2111     wmv2dsp
2112 "
2113
2114 CMDLINE_SELECT="
2115     $ARCH_EXT_LIST
2116     $CONFIG_LIST
2117     $HAVE_LIST_CMDLINE
2118     $THREADS_LIST
2119     asm
2120     cross_compile
2121     debug
2122     extra_warnings
2123     logging
2124     lto
2125     optimizations
2126     rpath
2127     stripping
2128 "
2129
2130 PATHS_LIST="
2131     bindir
2132     datadir
2133     docdir
2134     incdir
2135     libdir
2136     mandir
2137     pkgconfigdir
2138     prefix
2139     shlibdir
2140     install_name_dir
2141 "
2142
2143 CMDLINE_SET="
2144     $PATHS_LIST
2145     ar
2146     arch
2147     as
2148     assert_level
2149     build_suffix
2150     cc
2151     objcc
2152     cpu
2153     cross_prefix
2154     custom_allocator
2155     cxx
2156     dep_cc
2157     doxygen
2158     env
2159     extra_version
2160     gas
2161     host_cc
2162     host_cflags
2163     host_ld
2164     host_ldflags
2165     host_libs
2166     host_os
2167     install
2168     ld
2169     ln_s
2170     logfile
2171     malloc_prefix
2172     nm
2173     optflags
2174     pkg_config
2175     pkg_config_flags
2176     progs_suffix
2177     random_seed
2178     ranlib
2179     samples
2180     strip
2181     sws_max_filter_size
2182     sysinclude
2183     sysroot
2184     target_exec
2185     target_os
2186     target_path
2187     target_samples
2188     tempprefix
2189     toolchain
2190     valgrind
2191     yasmexe
2192 "
2193
2194 CMDLINE_APPEND="
2195     extra_cflags
2196     extra_cxxflags
2197     extra_objcflags
2198     host_cppflags
2199 "
2200
2201 # code dependency declarations
2202
2203 # architecture extensions
2204
2205 armv5te_deps="arm"
2206 armv6_deps="arm"
2207 armv6t2_deps="arm"
2208 armv8_deps="aarch64"
2209 neon_deps_any="aarch64 arm"
2210 intrinsics_neon_deps="neon"
2211 vfp_deps_any="aarch64 arm"
2212 vfpv3_deps="vfp"
2213 setend_deps="arm"
2214
2215 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2216
2217 loongson2_deps="mips"
2218 loongson3_deps="mips"
2219 mipsfpu_deps="mips"
2220 mipsdsp_deps="mips"
2221 mipsdspr2_deps="mips"
2222 mips32r2_deps="mips"
2223 mips32r5_deps="mips"
2224 mips32r6_deps="mips"
2225 mips64r2_deps="mips"
2226 mips64r6_deps="mips"
2227 msa_deps="mipsfpu"
2228 mmi_deps="mips"
2229
2230 altivec_deps="ppc"
2231 dcbzl_deps="ppc"
2232 ldbrx_deps="ppc"
2233 ppc4xx_deps="ppc"
2234 vsx_deps="altivec"
2235 power8_deps="vsx"
2236
2237 cpunop_deps="i686"
2238 x86_64_select="i686"
2239 x86_64_suggest="fast_cmov"
2240
2241 amd3dnow_deps="mmx"
2242 amd3dnowext_deps="amd3dnow"
2243 i686_deps="x86"
2244 mmx_deps="x86"
2245 mmxext_deps="mmx"
2246 sse_deps="mmxext"
2247 sse2_deps="sse"
2248 sse3_deps="sse2"
2249 ssse3_deps="sse3"
2250 sse4_deps="ssse3"
2251 sse42_deps="sse4"
2252 aesni_deps="sse42"
2253 avx_deps="sse42"
2254 xop_deps="avx"
2255 fma3_deps="avx"
2256 fma4_deps="avx"
2257 avx2_deps="avx"
2258
2259 mmx_external_deps="yasm"
2260 mmx_inline_deps="inline_asm"
2261 mmx_suggest="mmx_external mmx_inline"
2262
2263 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2264     eval dep=\$${ext}_deps
2265     eval ${ext}_external_deps='"${dep}_external"'
2266     eval ${ext}_inline_deps='"${dep}_inline"'
2267     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2268 done
2269
2270 aligned_stack_if_any="aarch64 ppc x86"
2271 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2272 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2273 fast_unaligned_if_any="aarch64 ppc x86"
2274 simd_align_16_if_any="altivec neon sse"
2275
2276 # system capabilities
2277 symver_if_any="symver_asm_label symver_gnu_asm"
2278 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2279
2280 # threading support
2281 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2282 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2283 atomics_win32_if="MemoryBarrier"
2284 atomics_native_if_any="$ATOMICS_LIST"
2285 w32threads_deps="atomics_native"
2286 threads_if_any="$THREADS_LIST"
2287
2288 # subsystems
2289 dct_select="rdft"
2290 dirac_parse_select="golomb"
2291 error_resilience_select="me_cmp"
2292 faandct_deps="faan fdctdsp"
2293 faanidct_deps="faan idctdsp"
2294 h264dsp_select="startcode"
2295 frame_thread_encoder_deps="encoders threads"
2296 intrax8_select="blockdsp idctdsp"
2297 mdct_select="fft"
2298 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2299 mpeg_er_select="error_resilience"
2300 mpegaudio_select="mpegaudiodsp"
2301 mpegaudiodsp_select="dct"
2302 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2303 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2304 vc1dsp_select="h264chroma qpeldsp startcode"
2305 rdft_select="fft"
2306
2307 # decoders / encoders
2308 aac_decoder_select="imdct15 mdct sinewin"
2309 aac_fixed_decoder_select="mdct sinewin"
2310 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2311 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2312 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2313 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2314 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 adpcm_g722_decoder_select="g722dsp"
2317 adpcm_g722_encoder_select="g722dsp"
2318 aic_decoder_select="golomb idctdsp"
2319 alac_encoder_select="lpc"
2320 als_decoder_select="bswapdsp"
2321 amrnb_decoder_select="lsp"
2322 amrwb_decoder_select="lsp"
2323 amv_decoder_select="sp5x_decoder exif"
2324 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2325 ape_decoder_select="bswapdsp llauddsp"
2326 apng_decoder_select="zlib"
2327 apng_encoder_select="huffyuvencdsp zlib"
2328 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2329 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2330 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2331 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2332 atrac1_decoder_select="mdct sinewin"
2333 atrac3_decoder_select="mdct"
2334 atrac3p_decoder_select="mdct sinewin"
2335 avrn_decoder_select="exif jpegtables"
2336 bink_decoder_select="blockdsp hpeldsp"
2337 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2338 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2339 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2340 cllc_decoder_select="bswapdsp"
2341 comfortnoise_encoder_select="lpc"
2342 cook_decoder_select="audiodsp mdct sinewin"
2343 cscd_decoder_select="lzo"
2344 cscd_decoder_suggest="zlib"
2345 dca_decoder_select="mdct"
2346 dds_decoder_select="texturedsp"
2347 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2348 dnxhd_decoder_select="blockdsp idctdsp"
2349 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2350 dvvideo_decoder_select="dvprofile idctdsp"
2351 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2352 dxa_decoder_select="zlib"
2353 dxv_decoder_select="lzf texturedsp"
2354 eac3_decoder_select="ac3_decoder"
2355 eac3_encoder_select="ac3_encoder"
2356 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2357 eatgq_decoder_select="aandcttables"
2358 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2359 exr_decoder_select="zlib"
2360 ffv1_decoder_select="golomb rangecoder"
2361 ffv1_encoder_select="rangecoder"
2362 ffvhuff_decoder_select="huffyuv_decoder"
2363 ffvhuff_encoder_select="huffyuv_encoder"
2364 fic_decoder_select="golomb"
2365 flac_decoder_select="flacdsp golomb"
2366 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2367 flashsv2_decoder_select="zlib"
2368 flashsv2_encoder_select="zlib"
2369 flashsv_decoder_select="zlib"
2370 flashsv_encoder_select="zlib"
2371 flv_decoder_select="h263_decoder"
2372 flv_encoder_select="h263_encoder"
2373 fourxm_decoder_select="blockdsp bswapdsp"
2374 fraps_decoder_select="bswapdsp huffman"
2375 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2376 g729_decoder_select="audiodsp"
2377 h261_decoder_select="mpegvideo"
2378 h261_encoder_select="aandcttables mpegvideoenc"
2379 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2380 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2381 h263i_decoder_select="h263_decoder"
2382 h263p_decoder_select="h263_decoder"
2383 h263p_encoder_select="h263_encoder"
2384 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2385 h264_decoder_suggest="error_resilience"
2386 hap_decoder_select="snappy texturedsp"
2387 hap_encoder_deps="libsnappy"
2388 hap_encoder_select="texturedspenc"
2389 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2390 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2391 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2392 iac_decoder_select="imc_decoder"
2393 imc_decoder_select="bswapdsp fft mdct sinewin"
2394 indeo3_decoder_select="hpeldsp"
2395 indeo4_decoder_select="ividsp"
2396 indeo5_decoder_select="ividsp"
2397 interplay_video_decoder_select="hpeldsp"
2398 jpegls_decoder_select="golomb mjpeg_decoder"
2399 jpegls_encoder_select="golomb"
2400 jv_decoder_select="blockdsp"
2401 lagarith_decoder_select="huffyuvdsp"
2402 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2403 loco_decoder_select="golomb"
2404 magicyuv_decoder_select="huffyuvdsp"
2405 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2406 metasound_decoder_select="lsp mdct sinewin"
2407 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2408 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2409 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 mjpegb_decoder_select="mjpeg_decoder"
2411 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2412 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2413 mlp_decoder_select="mlp_parser"
2414 motionpixels_decoder_select="bswapdsp"
2415 mp1_decoder_select="mpegaudio"
2416 mp1float_decoder_select="mpegaudio"
2417 mp2_decoder_select="mpegaudio"
2418 mp2float_decoder_select="mpegaudio"
2419 mp3_decoder_select="mpegaudio"
2420 mp3adu_decoder_select="mpegaudio"
2421 mp3adufloat_decoder_select="mpegaudio"
2422 mp3float_decoder_select="mpegaudio"
2423 mp3on4_decoder_select="mpegaudio"
2424 mp3on4float_decoder_select="mpegaudio"
2425 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2426 mpc8_decoder_select="mpegaudiodsp"
2427 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2428 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2429 mpegvideo_decoder_select="mpegvideo"
2430 mpeg1video_decoder_select="mpegvideo"
2431 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2432 mpeg2video_decoder_select="mpegvideo"
2433 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2434 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2435 mpeg4_encoder_select="h263_encoder"
2436 msa1_decoder_select="mss34dsp"
2437 msmpeg4v1_decoder_select="h263_decoder"
2438 msmpeg4v2_decoder_select="h263_decoder"
2439 msmpeg4v2_encoder_select="h263_encoder"
2440 msmpeg4v3_decoder_select="h263_decoder"
2441 msmpeg4v3_encoder_select="h263_encoder"
2442 mss2_decoder_select="vc1_decoder mpegvideo"
2443 mts2_decoder_select="mss34dsp"
2444 mxpeg_decoder_select="mjpeg_decoder"
2445 nellymoser_decoder_select="mdct sinewin"
2446 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2447 nuv_decoder_select="idctdsp lzo"
2448 on2avc_decoder_select="mdct"
2449 opus_decoder_deps="swresample"
2450 opus_decoder_select="imdct15"
2451 png_decoder_select="zlib"
2452 png_encoder_select="huffyuvencdsp zlib"
2453 prores_decoder_select="blockdsp idctdsp"
2454 prores_encoder_select="fdctdsp"
2455 qcelp_decoder_select="lsp"
2456 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2457 ra_144_decoder_select="audiodsp"
2458 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2459 ralf_decoder_select="golomb"
2460 rawvideo_decoder_select="bswapdsp"
2461 rscc_decoder_select="zlib"
2462 rtjpeg_decoder_select="me_cmp"
2463 rv10_decoder_select="h263_decoder"
2464 rv10_encoder_select="h263_encoder"
2465 rv20_decoder_select="h263_decoder"
2466 rv20_encoder_select="h263_encoder"
2467 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 screenpresso_decoder_select="zlib"
2470 shorten_decoder_select="golomb"
2471 sipr_decoder_select="lsp"
2472 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2473 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2474 sonic_decoder_select="golomb rangecoder"
2475 sonic_encoder_select="golomb rangecoder"
2476 sonic_ls_encoder_select="golomb rangecoder"
2477 sp5x_decoder_select="mjpeg_decoder"
2478 svq1_decoder_select="hpeldsp"
2479 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2480 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2481 svq3_decoder_suggest="zlib"
2482 tak_decoder_select="audiodsp"
2483 tdsc_decoder_select="zlib mjpeg_decoder"
2484 theora_decoder_select="vp3_decoder"
2485 thp_decoder_select="mjpeg_decoder"
2486 tiff_decoder_suggest="zlib lzma"
2487 tiff_encoder_suggest="zlib"
2488 truehd_decoder_select="mlp_parser"
2489 truemotion2_decoder_select="bswapdsp"
2490 truespeech_decoder_select="bswapdsp"
2491 tscc_decoder_select="zlib"
2492 twinvq_decoder_select="mdct lsp sinewin"
2493 txd_decoder_select="texturedsp"
2494 utvideo_decoder_select="bswapdsp"
2495 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2496 vble_decoder_select="huffyuvdsp"
2497 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2498 vc1_qsv_decoder_deps="libmfx"
2499 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2500 vc1image_decoder_select="vc1_decoder"
2501 vorbis_decoder_select="mdct"
2502 vorbis_encoder_select="mdct"
2503 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2504 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2505 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2506 vp6a_decoder_select="vp6_decoder"
2507 vp6f_decoder_select="vp6_decoder"
2508 vp7_decoder_select="h264pred videodsp vp8dsp"
2509 vp8_decoder_select="h264pred videodsp vp8dsp"
2510 vp9_decoder_select="videodsp vp9_parser"
2511 webp_decoder_select="vp8_decoder exif"
2512 wmalossless_decoder_select="llauddsp"
2513 wmapro_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_encoder_select="mdct sinewin wma_freqs"
2516 wmav2_decoder_select="mdct sinewin wma_freqs"
2517 wmav2_encoder_select="mdct sinewin wma_freqs"
2518 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2519 wmv1_decoder_select="h263_decoder"
2520 wmv1_encoder_select="h263_encoder"
2521 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2522 wmv2_encoder_select="h263_encoder wmv2dsp"
2523 wmv3_decoder_select="vc1_decoder"
2524 wmv3image_decoder_select="wmv3_decoder"
2525 xma1_decoder_select="wmapro_decoder"
2526 xma2_decoder_select="wmapro_decoder"
2527 zerocodec_decoder_select="zlib"
2528 zlib_decoder_select="zlib"
2529 zlib_encoder_select="zlib"
2530 zmbv_decoder_select="zlib"
2531 zmbv_encoder_select="zlib"
2532
2533 # platform codecs
2534 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2535 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2536
2537 # hardware accelerators
2538 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2539 cuvid_deps="cuda"
2540 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2541 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2542 vaapi_deps="va_va_h"
2543 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2544 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2545 vda_deps="vda_framework pthreads"
2546 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2547 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2548 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2549 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2550 xvmc_deps="X11_extensions_XvMClib_h"
2551
2552 h263_vaapi_hwaccel_deps="vaapi"
2553 h263_vaapi_hwaccel_select="h263_decoder"
2554 h263_videotoolbox_hwaccel_deps="videotoolbox"
2555 h263_videotoolbox_hwaccel_select="h263_decoder"
2556 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2557 h264_cuvid_hwaccel_deps="cuda cuvid"
2558 h264_d3d11va_hwaccel_deps="d3d11va"
2559 h264_d3d11va_hwaccel_select="h264_decoder"
2560 h264_dxva2_hwaccel_deps="dxva2"
2561 h264_dxva2_hwaccel_select="h264_decoder"
2562 h264_mediacodec_decoder_deps="mediacodec"
2563 h264_mediacodec_hwaccel_deps="mediacodec"
2564 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2565 h264_mmal_decoder_deps="mmal"
2566 h264_mmal_decoder_select="mmal"
2567 h264_mmal_hwaccel_deps="mmal"
2568 h264_omx_encoder_deps="omx"
2569 h264_qsv_hwaccel_deps="libmfx"
2570 h264_vaapi_hwaccel_deps="vaapi"
2571 h264_vaapi_hwaccel_select="h264_decoder"
2572 h264_vda_decoder_deps="vda"
2573 h264_vda_decoder_select="h264_decoder"
2574 h264_vda_hwaccel_deps="vda"
2575 h264_vda_hwaccel_select="h264_decoder"
2576 h264_vda_old_hwaccel_deps="vda"
2577 h264_vda_old_hwaccel_select="h264_decoder"
2578 h264_vdpau_decoder_deps="vdpau"
2579 h264_vdpau_decoder_select="h264_decoder"
2580 h264_vdpau_hwaccel_deps="vdpau"
2581 h264_vdpau_hwaccel_select="h264_decoder"
2582 h264_videotoolbox_hwaccel_deps="videotoolbox"
2583 h264_videotoolbox_hwaccel_select="h264_decoder"
2584 hevc_cuvid_hwaccel_deps="cuda cuvid"
2585 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2586 hevc_d3d11va_hwaccel_select="hevc_decoder"
2587 hevc_mediacodec_decoder_deps="mediacodec"
2588 hevc_mediacodec_hwaccel_deps="mediacodec"
2589 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2590 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2591 hevc_dxva2_hwaccel_select="hevc_decoder"
2592 hevc_qsv_hwaccel_deps="libmfx"
2593 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2594 hevc_vaapi_hwaccel_select="hevc_decoder"
2595 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2596 hevc_vdpau_hwaccel_select="hevc_decoder"
2597 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2598 mpeg_vdpau_decoder_deps="vdpau"
2599 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2600 mpeg_xvmc_hwaccel_deps="xvmc"
2601 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2602 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2603 mpeg1_vdpau_decoder_deps="vdpau"
2604 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2605 mpeg1_vdpau_hwaccel_deps="vdpau"
2606 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2607 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2608 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2609 mpeg1_xvmc_hwaccel_deps="xvmc"
2610 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2611 mpeg2_crystalhd_decoder_select="crystalhd"
2612 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2613 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2614 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2615 mpeg2_dxva2_hwaccel_deps="dxva2"
2616 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_mmal_decoder_deps="mmal"
2618 mpeg2_mmal_decoder_select="mmal"
2619 mpeg2_mmal_hwaccel_deps="mmal"
2620 mpeg2_qsv_hwaccel_deps="libmfx"
2621 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2622 mpeg2_vaapi_hwaccel_deps="vaapi"
2623 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2624 mpeg2_vdpau_hwaccel_deps="vdpau"
2625 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2626 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2627 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2628 mpeg2_xvmc_hwaccel_deps="xvmc"
2629 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2630 mpeg4_crystalhd_decoder_select="crystalhd"
2631 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2632 mpeg4_mediacodec_decoder_deps="mediacodec"
2633 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2634 mpeg4_mmal_decoder_deps="mmal"
2635 mpeg4_mmal_decoder_select="mmal"
2636 mpeg4_mmal_hwaccel_deps="mmal"
2637 mpeg4_omx_encoder_deps="omx"
2638 mpeg4_vaapi_hwaccel_deps="vaapi"
2639 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2640 mpeg4_vdpau_decoder_deps="vdpau"
2641 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2642 mpeg4_vdpau_hwaccel_deps="vdpau"
2643 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2644 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2645 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2646 msmpeg4_crystalhd_decoder_select="crystalhd"
2647 vc1_crystalhd_decoder_select="crystalhd"
2648 vc1_cuvid_hwaccel_deps="cuda cuvid"
2649 vc1_d3d11va_hwaccel_deps="d3d11va"
2650 vc1_d3d11va_hwaccel_select="vc1_decoder"
2651 vc1_dxva2_hwaccel_deps="dxva2"
2652 vc1_dxva2_hwaccel_select="vc1_decoder"
2653 vc1_mmal_decoder_deps="mmal"
2654 vc1_mmal_decoder_select="mmal"
2655 vc1_mmal_hwaccel_deps="mmal"
2656 vc1_qsv_hwaccel_deps="libmfx"
2657 vc1_qsv_hwaccel_select="qsvdec_vc1"
2658 vc1_vaapi_hwaccel_deps="vaapi"
2659 vc1_vaapi_hwaccel_select="vc1_decoder"
2660 vc1_vdpau_decoder_deps="vdpau"
2661 vc1_vdpau_decoder_select="vc1_decoder"
2662 vc1_vdpau_hwaccel_deps="vdpau"
2663 vc1_vdpau_hwaccel_select="vc1_decoder"
2664 vp8_cuvid_hwaccel_deps="cuda cuvid"
2665 vp9_cuvid_hwaccel_deps="cuda cuvid"
2666 vp8_mediacodec_decoder_deps="mediacodec"
2667 vp8_mediacodec_hwaccel_deps="mediacodec"
2668 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2669 vp9_d3d11va_hwaccel_select="vp9_decoder"
2670 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2671 vp9_dxva2_hwaccel_select="vp9_decoder"
2672 vp9_mediacodec_decoder_deps="mediacodec"
2673 vp9_mediacodec_hwaccel_deps="mediacodec"
2674 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2675 vp9_vaapi_hwaccel_select="vp9_decoder"
2676 wmv3_crystalhd_decoder_select="crystalhd"
2677 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2678 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2679 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2680 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2681 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2682
2683 # hardware-accelerated codecs
2684 omx_deps="dlopen pthreads"
2685 omx_extralibs='$ldl'
2686 qsvdec_select="qsv"
2687 qsvenc_select="qsv"
2688 vaapi_encode_deps="vaapi"
2689
2690 hwupload_cuda_filter_deps="cuda"
2691 scale_npp_filter_deps="cuda libnpp"
2692
2693 nvenc_deps_any="dlopen LoadLibrary"
2694 nvenc_encoder_deps="nvenc"
2695 h264_cuvid_decoder_deps="cuda cuvid"
2696 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2697 h264_nvenc_encoder_deps="nvenc"
2698 h264_qsv_decoder_deps="libmfx"
2699 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2700 h264_qsv_encoder_deps="libmfx"
2701 h264_qsv_encoder_select="qsvenc"
2702 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2703 h264_vaapi_encoder_select="vaapi_encode golomb"
2704
2705 hevc_cuvid_decoder_deps="cuda cuvid"
2706 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2707 hevc_nvenc_encoder_deps="nvenc"
2708 hevc_qsv_decoder_deps="libmfx"
2709 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2710 hevc_qsv_encoder_deps="libmfx"
2711 hevc_qsv_encoder_select="qsvenc"
2712 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2713 hevc_vaapi_encoder_select="vaapi_encode golomb"
2714 mjpeg_cuvid_decoder_deps="cuda cuvid"
2715 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2716 mpeg1_cuvid_decoder_deps="cuda cuvid"
2717 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2718 mpeg2_cuvid_decoder_deps="cuda cuvid"
2719 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2720 mpeg2_qsv_decoder_deps="libmfx"
2721 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2722 mpeg2_qsv_encoder_deps="libmfx"
2723 mpeg2_qsv_encoder_select="qsvenc"
2724 mpeg4_cuvid_decoder_deps="cuda cuvid"
2725 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2726 nvenc_h264_encoder_deps="nvenc"
2727 nvenc_hevc_encoder_deps="nvenc"
2728
2729 vc1_cuvid_decoder_deps="cuda cuvid"
2730 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2731 vp8_cuvid_decoder_deps="cuda cuvid"
2732 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2733 vp9_cuvid_decoder_deps="cuda cuvid"
2734 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2735
2736 # parsers
2737 h264_parser_select="golomb h264dsp"
2738 hevc_parser_select="golomb"
2739 mpegvideo_parser_select="mpegvideo"
2740 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2741 vc1_parser_select="vc1dsp"
2742
2743 # bitstream_filters
2744 mjpeg2jpeg_bsf_select="jpegtables"
2745
2746 # external libraries
2747 aac_at_decoder_deps="audiotoolbox"
2748 ac3_at_decoder_deps="audiotoolbox"
2749 ac3_at_decoder_select="ac3_parser"
2750 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2751 alac_at_decoder_deps="audiotoolbox"
2752 amr_nb_at_decoder_deps="audiotoolbox"
2753 avisynth_deps_any="dlopen LoadLibrary"
2754 avisynth_demuxer_deps="avisynth"
2755 avisynth_demuxer_select="riffdec"
2756 eac3_at_decoder_deps="audiotoolbox"
2757 eac3_at_decoder_select="ac3_parser"
2758 gsm_ms_at_decoder_deps="audiotoolbox"
2759 ilbc_at_decoder_deps="audiotoolbox"
2760 mp1_at_decoder_deps="audiotoolbox"
2761 mp2_at_decoder_deps="audiotoolbox"
2762 mp3_at_decoder_deps="audiotoolbox"
2763 pcm_alaw_at_decoder_deps="audiotoolbox"
2764 pcm_mulaw_at_decoder_deps="audiotoolbox"
2765 qdmc_at_decoder_deps="audiotoolbox"
2766 qdm2_at_decoder_deps="audiotoolbox"
2767 aac_at_encoder_deps="audiotoolbox"
2768 aac_at_encoder_select="audio_frame_queue"
2769 alac_at_encoder_deps="audiotoolbox"
2770 alac_at_encoder_select="audio_frame_queue"
2771 ilbc_at_encoder_deps="audiotoolbox"
2772 ilbc_at_encoder_select="audio_frame_queue"
2773 pcm_alaw_at_encoder_deps="audiotoolbox"
2774 pcm_alaw_at_encoder_select="audio_frame_queue"
2775 pcm_mulaw_at_encoder_deps="audiotoolbox"
2776 pcm_mulaw_at_encoder_select="audio_frame_queue"
2777 chromaprint_muxer_deps="chromaprint"
2778 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2779 libcelt_decoder_deps="libcelt"
2780 libfdk_aac_decoder_deps="libfdk_aac"
2781 libfdk_aac_encoder_deps="libfdk_aac"
2782 libfdk_aac_encoder_select="audio_frame_queue"
2783 libgme_demuxer_deps="libgme"
2784 libgsm_decoder_deps="libgsm"
2785 libgsm_encoder_deps="libgsm"
2786 libgsm_ms_decoder_deps="libgsm"
2787 libgsm_ms_encoder_deps="libgsm"
2788 libilbc_decoder_deps="libilbc"
2789 libilbc_encoder_deps="libilbc"
2790 libkvazaar_encoder_deps="libkvazaar"
2791 libmodplug_demuxer_deps="libmodplug"
2792 libmp3lame_encoder_deps="libmp3lame"
2793 libmp3lame_encoder_select="audio_frame_queue"
2794 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2795 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2796 libopencore_amrnb_encoder_select="audio_frame_queue"
2797 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2798 libopenh264_decoder_deps="libopenh264"
2799 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2800 libopenh264_encoder_deps="libopenh264"
2801 libopenjpeg_decoder_deps="libopenjpeg"
2802 libopenjpeg_encoder_deps="libopenjpeg"
2803 libopenmpt_demuxer_deps="libopenmpt"
2804 libopus_decoder_deps="libopus"
2805 libopus_encoder_deps="libopus"
2806 libopus_encoder_select="audio_frame_queue"
2807 libschroedinger_decoder_deps="libschroedinger"
2808 libschroedinger_encoder_deps="libschroedinger"
2809 libshine_encoder_deps="libshine"
2810 libshine_encoder_select="audio_frame_queue"
2811 libspeex_decoder_deps="libspeex"
2812 libspeex_encoder_deps="libspeex"
2813 libspeex_encoder_select="audio_frame_queue"
2814 libtheora_encoder_deps="libtheora"
2815 libtwolame_encoder_deps="libtwolame"
2816 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2817 libvorbis_decoder_deps="libvorbis"
2818 libvorbis_encoder_deps="libvorbis"
2819 libvorbis_encoder_select="audio_frame_queue"
2820 libvpx_vp8_decoder_deps="libvpx"
2821 libvpx_vp8_encoder_deps="libvpx"
2822 libvpx_vp9_decoder_deps="libvpx"
2823 libvpx_vp9_encoder_deps="libvpx"
2824 libwavpack_encoder_deps="libwavpack"
2825 libwebp_encoder_deps="libwebp"
2826 libwebp_anim_encoder_deps="libwebp"
2827 libx262_encoder_deps="libx262"
2828 libx264_encoder_deps="libx264"
2829 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2830 libx264rgb_encoder_select="libx264_encoder"
2831 libx265_encoder_deps="libx265"
2832 libxavs_encoder_deps="libxavs"
2833 libxvid_encoder_deps="libxvid"
2834 libzvbi_teletext_decoder_deps="libzvbi"
2835 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2836 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2837 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2838 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2839 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2840
2841 # demuxers / muxers
2842 ac3_demuxer_select="ac3_parser"
2843 asf_demuxer_select="riffdec"
2844 asf_o_demuxer_select="riffdec"
2845 asf_muxer_select="riffenc"
2846 asf_stream_muxer_select="asf_muxer"
2847 avi_demuxer_select="iso_media riffdec exif"
2848 avi_muxer_select="riffenc"
2849 caf_demuxer_select="iso_media riffdec"
2850 dash_muxer_select="mp4_muxer"
2851 dirac_demuxer_select="dirac_parser"
2852 dts_demuxer_select="dca_parser"
2853 dtshd_demuxer_select="dca_parser"
2854 dv_demuxer_select="dvprofile"
2855 dv_muxer_select="dvprofile"
2856 dxa_demuxer_select="riffdec"
2857 eac3_demuxer_select="ac3_parser"
2858 f4v_muxer_select="mov_muxer"
2859 fifo_muxer_deps="threads"
2860 flac_demuxer_select="flac_parser"
2861 hds_muxer_select="flv_muxer"
2862 hls_muxer_select="mpegts_muxer"
2863 image2_alias_pix_demuxer_select="image2_demuxer"
2864 image2_brender_pix_demuxer_select="image2_demuxer"
2865 ipod_muxer_select="mov_muxer"
2866 ismv_muxer_select="mov_muxer"
2867 libnut_demuxer_deps="libnut"
2868 libnut_muxer_deps="libnut"
2869 matroska_audio_muxer_select="matroska_muxer"
2870 matroska_demuxer_select="iso_media riffdec"
2871 matroska_demuxer_suggest="bzlib lzo zlib"
2872 matroska_muxer_select="iso_media riffenc"
2873 mmf_muxer_select="riffenc"
2874 mov_demuxer_select="iso_media riffdec"
2875 mov_demuxer_suggest="zlib"
2876 mov_muxer_select="iso_media riffenc rtpenc_chain"
2877 mp3_demuxer_select="mpegaudio_parser"
2878 mp4_muxer_select="mov_muxer"
2879 mpegts_demuxer_select="iso_media"
2880 mpegts_muxer_select="adts_muxer latm_muxer"
2881 mpegtsraw_demuxer_select="mpegts_demuxer"
2882 mxf_d10_muxer_select="mxf_muxer"
2883 mxf_opatom_muxer_select="mxf_muxer"
2884 nut_muxer_select="riffenc"
2885 nuv_demuxer_select="riffdec"
2886 oga_muxer_select="ogg_muxer"
2887 ogg_demuxer_select="dirac_parse"
2888 ogv_muxer_select="ogg_muxer"
2889 opus_muxer_select="ogg_muxer"
2890 psp_muxer_select="mov_muxer"
2891 rtp_demuxer_select="sdp_demuxer"
2892 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2893 rtsp_demuxer_select="http_protocol rtpdec"
2894 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2895 sap_demuxer_select="sdp_demuxer"
2896 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2897 sdp_demuxer_select="rtpdec"
2898 smoothstreaming_muxer_select="ismv_muxer"
2899 spdif_muxer_select="aac_parser"
2900 spx_muxer_select="ogg_muxer"
2901 swf_demuxer_suggest="zlib"
2902 tak_demuxer_select="tak_parser"
2903 tg2_muxer_select="mov_muxer"
2904 tgp_muxer_select="mov_muxer"
2905 vobsub_demuxer_select="mpegps_demuxer"
2906 w64_demuxer_select="wav_demuxer"
2907 w64_muxer_select="wav_muxer"
2908 wav_demuxer_select="riffdec"
2909 wav_muxer_select="riffenc"
2910 webm_muxer_select="iso_media riffenc"
2911 webm_dash_manifest_demuxer_select="matroska_demuxer"
2912 wtv_demuxer_select="mpegts_demuxer riffdec"
2913 wtv_muxer_select="mpegts_muxer riffenc"
2914 xmv_demuxer_select="riffdec"
2915 xwma_demuxer_select="riffdec"
2916
2917 # indevs / outdevs
2918 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2919 alsa_outdev_deps="alsa_asoundlib_h"
2920 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2921 avfoundation_indev_select="avfoundation"
2922 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2923 caca_outdev_deps="libcaca"
2924 decklink_indev_deps="decklink pthreads"
2925 decklink_indev_extralibs="-lstdc++"
2926 decklink_outdev_deps="decklink pthreads"
2927 decklink_outdev_extralibs="-lstdc++"
2928 dshow_indev_deps="IBaseFilter"
2929 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2930 dv1394_indev_deps="dv1394"
2931 dv1394_indev_select="dv_demuxer"
2932 fbdev_indev_deps="linux_fb_h"
2933 fbdev_outdev_deps="linux_fb_h"
2934 gdigrab_indev_deps="CreateDIBSection"
2935 gdigrab_indev_extralibs="-lgdi32"
2936 gdigrab_indev_select="bmp_decoder"
2937 iec61883_indev_deps="libiec61883"
2938 jack_indev_deps="jack_jack_h"
2939 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2940 lavfi_indev_deps="avfilter"
2941 libcdio_indev_deps="libcdio"
2942 libdc1394_indev_deps="libdc1394"
2943 libv4l2_indev_deps="libv4l2"
2944 openal_indev_deps="openal"
2945 opengl_outdev_deps="opengl"
2946 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2947 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2948 pulse_indev_deps="libpulse"
2949 pulse_outdev_deps="libpulse"
2950 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2951 qtkit_indev_select="qtkit"
2952 sdl2_outdev_deps="sdl2"
2953 sndio_indev_deps="sndio_h"
2954 sndio_outdev_deps="sndio_h"
2955 v4l_indev_deps="linux_videodev_h"
2956 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2957 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2958 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2959 vfwcap_indev_extralibs="-lavicap32"
2960 x11grab_indev_deps="x11grab"
2961 x11grab_xcb_indev_deps="libxcb"
2962 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2963 xv_outdev_extralibs="-lXv -lX11 -lXext"
2964
2965 # protocols
2966 async_protocol_deps="threads"
2967 bluray_protocol_deps="libbluray"
2968 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2969 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2970 ffrtmpcrypt_protocol_select="tcp_protocol"
2971 ffrtmphttp_protocol_deps="!librtmp_protocol"
2972 ffrtmphttp_protocol_select="http_protocol"
2973 ftp_protocol_select="tcp_protocol"
2974 gopher_protocol_select="network"
2975 http_protocol_select="tcp_protocol"
2976 httpproxy_protocol_select="tcp_protocol"
2977 https_protocol_select="tls_protocol"
2978 icecast_protocol_select="http_protocol"
2979 librtmp_protocol_deps="librtmp"
2980 librtmpe_protocol_deps="librtmp"
2981 librtmps_protocol_deps="librtmp"
2982 librtmpt_protocol_deps="librtmp"
2983 librtmpte_protocol_deps="librtmp"
2984 libsmbclient_protocol_deps="libsmbclient gplv3"
2985 libssh_protocol_deps="libssh"
2986 mmsh_protocol_select="http_protocol"
2987 mmst_protocol_select="network"
2988 rtmp_protocol_deps="!librtmp_protocol"
2989 rtmp_protocol_select="tcp_protocol"
2990 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2991 rtmps_protocol_deps="!librtmp_protocol"
2992 rtmps_protocol_select="tls_protocol"
2993 rtmpt_protocol_select="ffrtmphttp_protocol"
2994 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2995 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2996 rtp_protocol_select="udp_protocol"
2997 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2998 sctp_protocol_select="network"
2999 srtp_protocol_select="rtp_protocol srtp"
3000 tcp_protocol_select="network"
3001 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3002 tls_gnutls_protocol_select="tcp_protocol"
3003 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3004 tls_openssl_protocol_select="tcp_protocol"
3005 tls_schannel_protocol_deps="schannel"
3006 tls_schannel_protocol_select="tcp_protocol"
3007 tls_securetransport_protocol_deps="securetransport"
3008 tls_securetransport_protocol_select="tcp_protocol"
3009 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3010 udp_protocol_select="network"
3011 udplite_protocol_select="network"
3012 unix_protocol_deps="sys_un_h"
3013 unix_protocol_select="network"
3014
3015 # filters
3016 afftfilt_filter_deps="avcodec"
3017 afftfilt_filter_select="fft"
3018 amovie_filter_deps="avcodec avformat"
3019 aresample_filter_deps="swresample"
3020 ass_filter_deps="libass"
3021 asyncts_filter_deps="avresample"
3022 atempo_filter_deps="avcodec"
3023 atempo_filter_select="rdft"
3024 azmq_filter_deps="libzmq"
3025 blackframe_filter_deps="gpl"
3026 boxblur_filter_deps="gpl"
3027 bs2b_filter_deps="libbs2b"
3028 colormatrix_filter_deps="gpl"
3029 cover_rect_filter_deps="avcodec avformat gpl"
3030 cropdetect_filter_deps="gpl"
3031 delogo_filter_deps="gpl"
3032 deshake_filter_select="pixelutils"
3033 drawtext_filter_deps="libfreetype"
3034 ebur128_filter_deps="gpl"
3035 eq_filter_deps="gpl"
3036 fftfilt_filter_deps="avcodec"
3037 fftfilt_filter_select="rdft"
3038 find_rect_filter_deps="avcodec avformat gpl"
3039 firequalizer_filter_deps="avcodec"
3040 firequalizer_filter_select="rdft"
3041 flite_filter_deps="libflite"
3042 framerate_filter_select="pixelutils"
3043 frei0r_filter_deps="frei0r dlopen"
3044 frei0r_src_filter_deps="frei0r dlopen"
3045 fspp_filter_deps="gpl"
3046 geq_filter_deps="gpl"
3047 histeq_filter_deps="gpl"
3048 hqdn3d_filter_deps="gpl"
3049 interlace_filter_deps="gpl"
3050 kerndeint_filter_deps="gpl"
3051 ladspa_filter_deps="ladspa dlopen"
3052 mcdeint_filter_deps="avcodec gpl"
3053 movie_filter_deps="avcodec avformat"
3054 mpdecimate_filter_deps="gpl"
3055 mpdecimate_filter_select="pixelutils"
3056 mptestsrc_filter_deps="gpl"
3057 negate_filter_deps="lut_filter"
3058 nnedi_filter_deps="gpl"
3059 ocr_filter_deps="libtesseract"
3060 ocv_filter_deps="libopencv"
3061 owdenoise_filter_deps="gpl"
3062 pan_filter_deps="swresample"
3063 perspective_filter_deps="gpl"
3064 phase_filter_deps="gpl"
3065 pp7_filter_deps="gpl"
3066 pp_filter_deps="gpl postproc"
3067 pullup_filter_deps="gpl"
3068 removelogo_filter_deps="avcodec avformat swscale"
3069 repeatfields_filter_deps="gpl"
3070 resample_filter_deps="avresample"
3071 rubberband_filter_deps="librubberband"
3072 sab_filter_deps="gpl swscale"
3073 scale2ref_filter_deps="swscale"
3074 scale_filter_deps="swscale"
3075 select_filter_select="pixelutils"
3076 showcqt_filter_deps="avcodec avformat swscale"
3077 showcqt_filter_select="fft"
3078 showfreqs_filter_deps="avcodec"
3079 showfreqs_filter_select="fft"
3080 showspectrum_filter_deps="avcodec"
3081 showspectrum_filter_select="fft"
3082 showspectrumpic_filter_deps="avcodec"
3083 showspectrumpic_filter_select="fft"
3084 smartblur_filter_deps="gpl swscale"
3085 sofalizer_filter_deps="netcdf avcodec"
3086 sofalizer_filter_select="fft"
3087 spectrumsynth_filter_deps="avcodec"
3088 spectrumsynth_filter_select="fft"
3089 spp_filter_deps="gpl avcodec"
3090 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3091 stereo3d_filter_deps="gpl"
3092 subtitles_filter_deps="avformat avcodec libass"
3093 super2xsai_filter_deps="gpl"
3094 pixfmts_super2xsai_test_deps="super2xsai_filter"
3095 tinterlace_filter_deps="gpl"
3096 tinterlace_merge_test_deps="tinterlace_filter"
3097 tinterlace_pad_test_deps="tinterlace_filter"
3098 uspp_filter_deps="gpl avcodec"
3099 vaguedenoiser_filter_deps="gpl"
3100 vidstabdetect_filter_deps="libvidstab"
3101 vidstabtransform_filter_deps="libvidstab"
3102 zmq_filter_deps="libzmq"
3103 zoompan_filter_deps="swscale"
3104 zscale_filter_deps="libzimg"
3105 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3106
3107 # examples
3108 avio_dir_cmd_deps="avformat avutil"
3109 avio_reading_deps="avformat avcodec avutil"
3110 decoding_encoding_example_deps="avcodec avformat avutil"
3111 demuxing_decoding_example_deps="avcodec avformat avutil"
3112 extract_mvs_example_deps="avcodec avformat avutil"
3113 filter_audio_example_deps="avfilter avutil"
3114 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3115 filtering_video_example_deps="avfilter avcodec avformat avutil"
3116 http_multiclient_example_deps="avformat avutil fork"
3117 metadata_example_deps="avformat avutil"
3118 muxing_example_deps="avcodec avformat avutil swscale"
3119 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3120 remuxing_example_deps="avcodec avformat avutil"
3121 resampling_audio_example_deps="avutil swresample"
3122 scaling_video_example_deps="avutil swscale"
3123 transcode_aac_example_deps="avcodec avformat swresample"
3124 transcoding_example_deps="avfilter avcodec avformat avutil"
3125
3126 # libraries, in linking order
3127 avcodec_deps="avutil"
3128 avdevice_deps="avformat avcodec avutil"
3129 avfilter_deps="avutil"
3130 avformat_deps="avcodec avutil"
3131 avresample_deps="avutil"
3132 postproc_deps="avutil gpl"
3133 swresample_deps="avutil"
3134 swscale_deps="avutil"
3135
3136 # programs
3137 ffmpeg_deps="avcodec avfilter avformat swresample"
3138 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3139                null_filter
3140                setpts_filter trim_filter"
3141 ffplay_deps="avcodec avformat swscale swresample sdl2"
3142 ffplay_libs='$sdl2_libs'
3143 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3144 ffprobe_deps="avcodec avformat"
3145 ffserver_deps="avformat fork sarestart"
3146 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3147
3148 # documentation
3149 podpages_deps="perl"
3150 manpages_deps="perl pod2man"
3151 htmlpages_deps="perl"
3152 htmlpages_deps_any="makeinfo_html texi2html"
3153 txtpages_deps="perl makeinfo"
3154 doc_deps_any="manpages htmlpages podpages txtpages"
3155
3156 # default parameters
3157
3158 logfile="config.log"
3159
3160 # installation paths
3161 prefix_default="/usr/local"
3162 bindir_default='${prefix}/bin'
3163 datadir_default='${prefix}/share/ffmpeg'
3164 docdir_default='${prefix}/share/doc/ffmpeg'
3165 incdir_default='${prefix}/include'
3166 libdir_default='${prefix}/lib'
3167 mandir_default='${prefix}/share/man'
3168
3169 # toolchain
3170 ar_default="ar"
3171 cc_default="gcc"
3172 cxx_default="g++"
3173 host_cc_default="gcc"
3174 cp_f="cp -f"
3175 doxygen_default="doxygen"
3176 install="install"
3177 ln_s_default="ln -s -f"
3178 nm_default="nm -g"
3179 objformat="elf"
3180 pkg_config_default=pkg-config
3181 ranlib_default="ranlib"
3182 strip_default="strip"
3183 version_script='--version-script'
3184 yasmexe_default="yasm"
3185 windres_default="windres"
3186
3187 # OS
3188 target_os_default=$(tolower $(uname -s))
3189 host_os=$target_os_default
3190
3191 # machine
3192 if test "$target_os_default" = aix; then
3193     arch_default=$(uname -p)
3194     strip_default="strip -X32_64"
3195 else
3196     arch_default=$(uname -m)
3197 fi
3198 cpu="generic"
3199 intrinsics="none"
3200
3201 # configurable options
3202 enable $PROGRAM_LIST
3203 enable $DOCUMENT_LIST
3204 enable $EXAMPLE_LIST
3205 enable $(filter_out avresample $LIBRARY_LIST)
3206 enable stripping
3207
3208 enable asm
3209 enable debug
3210 enable doc
3211 enable faan faandct faanidct
3212 enable optimizations
3213 enable runtime_cpudetect
3214 enable safe_bitstream_reader
3215 enable static
3216 enable swscale_alpha
3217 enable valgrind_backtrace
3218
3219 sws_max_filter_size_default=256
3220 set_default sws_max_filter_size
3221
3222 # Enable platform codecs by default.
3223 enable audiotoolbox
3224
3225 # Enable hwaccels by default.
3226 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3227 enable xlib
3228
3229 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3230
3231 # build settings
3232 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3233 LIBPREF="lib"
3234 LIBSUF=".a"
3235 FULLNAME='$(NAME)$(BUILDSUF)'
3236 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3237 SLIBPREF="lib"
3238 SLIBSUF=".so"
3239 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3240 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3241 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3242 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3243 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3244 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3245 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3246
3247 asflags_filter=echo
3248 cflags_filter=echo
3249 ldflags_filter=echo
3250
3251 AS_C='-c'
3252 AS_O='-o $@'
3253 CC_C='-c'
3254 CC_E='-E -o $@'
3255 CC_O='-o $@'
3256 CXX_C='-c'
3257 CXX_O='-o $@'
3258 OBJCC_C='-c'
3259 OBJCC_E='-E -o $@'
3260 OBJCC_O='-o $@'
3261 LD_O='-o $@'
3262 LD_LIB='-l%'
3263 LD_PATH='-L'
3264 HOSTCC_C='-c'
3265 HOSTCC_E='-E -o $@'
3266 HOSTCC_O='-o $@'
3267 HOSTLD_O='-o $@'
3268
3269 host_libs='-lm'
3270 host_cflags_filter=echo
3271 host_ldflags_filter=echo
3272
3273 target_path='$(CURDIR)'
3274
3275 # since the object filename is not given with the -MM flag, the compiler
3276 # is only able to print the basename, and we must add the path ourselves
3277 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3278 DEPFLAGS='-MM'
3279
3280 # find source path
3281 if test -f configure; then
3282     source_path=.
3283 else
3284     source_path=$(cd $(dirname "$0"); pwd)
3285     case "$source_path" in
3286         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3287     esac
3288     test -e "$source_path/config.h" &&
3289         die "Out of tree builds are impossible with config.h in source dir."
3290 fi
3291
3292 for v in "$@"; do
3293     r=${v#*=}
3294     l=${v%"$r"}
3295     r=$(sh_quote "$r")
3296     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3297 done
3298
3299 find_things(){
3300     thing=$1
3301     pattern=$2
3302     file=$source_path/$3
3303     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3304 }
3305
3306 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3307 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3308 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3309 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3310 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3311 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3312 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3313 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3314 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3315
3316 find_things_extern(){
3317     thing=$1
3318     pattern=$2
3319     file=$source_path/$3
3320     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3321 }
3322
3323 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3324 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3325
3326 ALL_COMPONENTS="
3327     $BSF_LIST
3328     $DECODER_LIST
3329     $DEMUXER_LIST
3330     $ENCODER_LIST
3331     $FILTER_LIST
3332     $HWACCEL_LIST
3333     $INDEV_LIST
3334     $MUXER_LIST
3335     $OUTDEV_LIST
3336     $PARSER_LIST
3337     $PROTOCOL_LIST
3338 "
3339
3340 for n in $COMPONENT_LIST; do
3341     v=$(toupper ${n%s})_LIST
3342     eval enable \$$v
3343     eval ${n}_if_any="\$$v"
3344 done
3345
3346 enable $ARCH_EXT_LIST
3347
3348 die_unknown(){
3349     echo "Unknown option \"$1\"."
3350     echo "See $0 --help for available options."
3351     exit 1
3352 }
3353
3354 print_in_columns() {
3355     cols=$(expr $ncols / 24)
3356     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3357 }
3358
3359 show_list() {
3360     suffix=_$1
3361     shift
3362     echo $* | sed s/$suffix//g | print_in_columns
3363     exit 0
3364 }
3365
3366 rand_list(){
3367     IFS=', '
3368     set -- $*
3369     unset IFS
3370     for thing; do
3371         comp=${thing%:*}
3372         prob=${thing#$comp}
3373         prob=${prob#:}
3374         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3375         echo "prob ${prob:-0.5}"
3376         printf '%s\n' $comp
3377     done
3378 }
3379
3380 do_random(){
3381     action=$1
3382     shift
3383     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3384     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3385 }
3386
3387 for opt do
3388     optval="${opt#*=}"
3389     case "$opt" in
3390         --extra-ldflags=*)
3391             add_ldflags $optval
3392         ;;
3393         --extra-ldexeflags=*)
3394             add_ldexeflags $optval
3395         ;;
3396         --extra-ldlibflags=*)
3397             add_ldlibflags $optval
3398         ;;
3399         --extra-libs=*)
3400             add_extralibs $optval
3401         ;;
3402         --disable-devices)
3403             disable $INDEV_LIST $OUTDEV_LIST
3404         ;;
3405         --enable-debug=*)
3406             debuglevel="$optval"
3407         ;;
3408         --disable-programs)
3409             disable $PROGRAM_LIST
3410         ;;
3411         --disable-everything)
3412             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3413         ;;
3414         --disable-all)
3415             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3416             disable $LIBRARY_LIST $PROGRAM_LIST doc
3417             enable avutil
3418         ;;
3419         --enable-random|--disable-random)
3420             action=${opt%%-random}
3421             do_random ${action#--} $COMPONENT_LIST
3422         ;;
3423         --enable-random=*|--disable-random=*)
3424             action=${opt%%-random=*}
3425             do_random ${action#--} $optval
3426         ;;
3427         --enable-*=*|--disable-*=*)
3428             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3429             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3430             eval list=\$$(toupper $thing)_LIST
3431             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3432             list=$(filter "$name" $list)
3433             [ "$list" = "" ] && warn "Option $opt did not match anything"
3434             $action $list
3435         ;;
3436         --enable-?*|--disable-?*)
3437             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3438             if is_in $option $COMPONENT_LIST; then
3439                 test $action = disable && action=unset
3440                 eval $action \$$(toupper ${option%s})_LIST
3441             elif is_in $option $CMDLINE_SELECT; then
3442                 $action $option
3443             else
3444                 die_unknown $opt
3445             fi
3446         ;;
3447         --list-*)
3448             NAME="${opt#--list-}"
3449             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3450             NAME=${NAME%s}
3451             eval show_list $NAME \$$(toupper $NAME)_LIST
3452         ;;
3453         --help|-h) show_help
3454         ;;
3455         --fatal-warnings) enable fatal_warnings
3456         ;;
3457         *)
3458             optname="${opt%%=*}"
3459             optname="${optname#--}"
3460             optname=$(echo "$optname" | sed 's/-/_/g')
3461             if is_in $optname $CMDLINE_SET; then
3462                 eval $optname='$optval'
3463             elif is_in $optname $CMDLINE_APPEND; then
3464                 append $optname "$optval"
3465             else
3466                 die_unknown $opt
3467             fi
3468         ;;
3469     esac
3470 done
3471
3472 for e in $env; do
3473     eval "export $e"
3474 done
3475
3476 disabled logging && logfile=/dev/null
3477
3478 # Disable all the library-specific components if the library itself
3479 # is disabled, see AVCODEC_LIST and following _LIST variables.
3480
3481 disable_components(){
3482     disabled ${1} && disable $(
3483         eval components="\$$(toupper ${1})_COMPONENTS"
3484         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3485     )
3486 }
3487
3488 map 'disable_components $v' $LIBRARY_LIST
3489
3490 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3491 set >> $logfile
3492
3493 test -n "$valgrind" && toolchain="valgrind-memcheck"
3494
3495 case "$toolchain" in
3496     *-asan)
3497         cc_default="${toolchain%-asan}"
3498         add_cflags  -fsanitize=address
3499         add_ldflags -fsanitize=address
3500     ;;
3501     *-msan)
3502         cc_default="${toolchain%-msan}"
3503         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3504         add_ldflags -fsanitize=memory
3505     ;;
3506     *-tsan)
3507         cc_default="${toolchain%-tsan}"
3508         add_cflags  -fsanitize=thread -pie
3509         add_ldflags -fsanitize=thread -pie
3510         case "$toolchain" in
3511             gcc-tsan)
3512                 add_cflags  -fPIC
3513                 add_ldflags -fPIC
3514                 ;;
3515         esac
3516     ;;
3517     *-usan)
3518         cc_default="${toolchain%-usan}"
3519         add_cflags  -fsanitize=undefined
3520         add_ldflags -fsanitize=undefined
3521     ;;
3522     valgrind-*)
3523         target_exec_default="valgrind"
3524         case "$toolchain" in
3525             valgrind-massif)
3526                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3527                 ;;
3528             valgrind-memcheck)
3529                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3530                 ;;
3531         esac
3532     ;;
3533     msvc)
3534         # Check whether the current MSVC version needs the C99 converter.
3535         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3536         # support enough of C99 to build ffmpeg. Default to the new
3537         # behaviour if the regexp was unable to match anything, since this
3538         # successfully parses the version number of existing supported
3539         # versions that require the converter (MSVC 2010 and 2012).
3540         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3541         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3542             cc_default="cl"
3543         else
3544             cc_default="c99wrap cl"
3545         fi
3546         ld_default="$source_path/compat/windows/mslink"
3547         nm_default="dumpbin -symbols"
3548         ar_default="lib"
3549         case "$arch" in
3550         arm*)
3551             as_default="armasm"
3552             ;;
3553         esac
3554         target_os_default="win32"
3555         # Use a relative path for TMPDIR. This makes sure all the
3556         # ffconf temp files are written with a relative path, avoiding
3557         # issues with msys/win32 path conversion for MSVC parameters
3558         # such as -Fo<file> or -out:<file>.
3559         TMPDIR=.
3560     ;;
3561     icl)
3562         cc_default="icl"
3563         ld_default="xilink"
3564         nm_default="dumpbin -symbols"
3565         ar_default="xilib"
3566         target_os_default="win32"
3567         TMPDIR=.
3568     ;;
3569     gcov)
3570         add_cflags  -fprofile-arcs -ftest-coverage
3571         add_ldflags -fprofile-arcs -ftest-coverage
3572     ;;
3573     llvm-cov)
3574         add_cflags -fprofile-arcs -ftest-coverage
3575         add_ldflags --coverage
3576     ;;
3577     hardened)
3578         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3579         add_cflags   -fno-strict-overflow -fstack-protector-all
3580         add_ldflags  -Wl,-z,relro -Wl,-z,now
3581         add_cflags   -fPIE
3582         add_ldexeflags -fPIE -pie
3583     ;;
3584     ?*)
3585         die "Unknown toolchain $toolchain"
3586     ;;
3587 esac
3588
3589 test -n "$cross_prefix" && enable cross_compile
3590
3591 if enabled cross_compile; then
3592     test -n "$arch" && test -n "$target_os" ||
3593         die "Must specify target arch and OS when cross-compiling"
3594 fi
3595
3596 ar_default="${cross_prefix}${ar_default}"
3597 cc_default="${cross_prefix}${cc_default}"
3598 cxx_default="${cross_prefix}${cxx_default}"
3599 nm_default="${cross_prefix}${nm_default}"
3600 pkg_config_default="${cross_prefix}${pkg_config_default}"
3601 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3602     ranlib_default="${cross_prefix}${ranlib_default} -D"
3603 else
3604     ranlib_default="${cross_prefix}${ranlib_default}"
3605 fi
3606 strip_default="${cross_prefix}${strip_default}"
3607 windres_default="${cross_prefix}${windres_default}"
3608
3609 sysinclude_default="${sysroot}/usr/include"
3610
3611 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3612     target_exec target_os yasmexe
3613 enabled cross_compile || host_cc_default=$cc
3614 set_default host_cc
3615
3616 pkg_config_fail_message=""
3617 if ! $pkg_config --version >/dev/null 2>&1; then
3618     warn "$pkg_config not found, library detection may fail."
3619     pkg_config=false
3620 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3621     pkg_config_fail_message="
3622 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3623 fi
3624
3625 if test $doxygen != $doxygen_default && \
3626   ! $doxygen --version >/dev/null 2>&1; then
3627     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3628 fi
3629
3630 exesuf() {
3631     case $1 in
3632         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3633     esac
3634 }
3635
3636 EXESUF=$(exesuf $target_os)
3637 HOSTEXESUF=$(exesuf $host_os)
3638
3639 # set temporary file name
3640 : ${TMPDIR:=$TEMPDIR}
3641 : ${TMPDIR:=$TMP}
3642 : ${TMPDIR:=/tmp}
3643
3644 if [ -n "$tempprefix" ] ; then
3645     mktemp(){
3646         echo $tempprefix.${HOSTNAME}.${UID}
3647     }
3648 elif ! check_cmd mktemp -u XXXXXX; then
3649     # simple replacement for missing mktemp
3650     # NOT SAFE FOR GENERAL USE
3651     mktemp(){
3652         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3653     }
3654 fi
3655
3656 tmpfile(){
3657     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3658         (set -C; exec > $tmp) 2>/dev/null ||
3659         die "Unable to create temporary file in $TMPDIR."
3660     append TMPFILES $tmp
3661     eval $1=$tmp
3662 }
3663
3664 trap 'rm -f -- $TMPFILES' EXIT
3665
3666 tmpfile TMPASM .asm
3667 tmpfile TMPC   .c
3668 tmpfile TMPCPP .cpp
3669 tmpfile TMPE   $EXESUF
3670 tmpfile TMPH   .h
3671 tmpfile TMPM   .m
3672 tmpfile TMPO   .o
3673 tmpfile TMPS   .S
3674 tmpfile TMPSH  .sh
3675 tmpfile TMPV   .ver
3676
3677 unset -f mktemp
3678
3679 chmod +x $TMPE
3680
3681 # make sure we can execute files in $TMPDIR
3682 cat > $TMPSH 2>> $logfile <<EOF
3683 #! /bin/sh
3684 EOF
3685 chmod +x $TMPSH >> $logfile 2>&1
3686 if ! $TMPSH >> $logfile 2>&1; then
3687     cat <<EOF
3688 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3689 variable to another directory and make sure that it is not mounted noexec.
3690 EOF
3691     die "Sanity test failed."
3692 fi
3693
3694 armasm_flags(){
3695     for flag; do
3696         case $flag in
3697             # Filter out MSVC cl.exe options from cflags that shouldn't
3698             # be passed to gas-preprocessor
3699             -M[TD]*)                                            ;;
3700             *)                  echo $flag                      ;;
3701         esac
3702    done
3703 }
3704
3705 ccc_flags(){
3706     for flag; do
3707         case $flag in
3708             -std=c99)           echo -c99                       ;;
3709             -mcpu=*)            echo -arch ${flag#*=}           ;;
3710             -mieee)             echo -ieee                      ;;
3711             -O*|-fast)          echo $flag                      ;;
3712             -fno-math-errno)    echo -assume nomath_errno       ;;
3713             -g)                 echo -g3                        ;;
3714             -Wall)              echo -msg_enable level2         ;;
3715             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3716             -Wl,*)              echo $flag                      ;;
3717             -f*|-W*)                                            ;;
3718             *)                  echo $flag                      ;;
3719         esac
3720    done
3721 }
3722
3723 cparser_flags(){
3724     for flag; do
3725         case $flag in
3726             -Wno-switch)             echo -Wno-switch-enum ;;
3727             -Wno-format-zero-length) ;;
3728             -Wdisabled-optimization) ;;
3729             -Wno-pointer-sign)       echo -Wno-other ;;
3730             *)                       echo $flag ;;
3731         esac
3732     done
3733 }
3734
3735 msvc_common_flags(){
3736     for flag; do
3737         case $flag in
3738             # In addition to specifying certain flags under the compiler
3739             # specific filters, they must be specified here as well or else the
3740             # generic catch all at the bottom will print the original flag.
3741             -Wall)                ;;
3742             -std=c99)             ;;
3743             # Common flags
3744             -fomit-frame-pointer) ;;
3745             -g)                   echo -Z7 ;;
3746             -fno-math-errno)      ;;
3747             -fno-common)          ;;
3748             -fno-signed-zeros)    ;;
3749             -fPIC)                ;;
3750             -mthumb)              ;;
3751             -march=*)             ;;
3752             -lz)                  echo zlib.lib ;;
3753             -lavifil32)           echo vfw32.lib ;;
3754             -lavicap32)           echo vfw32.lib user32.lib ;;
3755             -lx264)               echo libx264.lib ;;
3756             -l*)                  echo ${flag#-l}.lib ;;
3757             -LARGEADDRESSAWARE)   echo $flag ;;
3758             -L*)                  echo -libpath:${flag#-L} ;;
3759             *)                    echo $flag ;;
3760         esac
3761     done
3762 }
3763
3764 msvc_flags(){
3765     msvc_common_flags "$@"
3766     for flag; do
3767         case $flag in
3768             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3769                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3770                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3771                                        -wd4307 \
3772                                        -wd4273 -wd4554 -wd4701 ;;
3773         esac
3774     done
3775 }
3776
3777 icl_flags(){
3778     msvc_common_flags "$@"
3779     for flag; do
3780         case $flag in
3781             # Despite what Intel's documentation says -Wall, which is supported
3782             # on Windows, does enable remarks so disable them here.
3783             -Wall)                echo $flag -Qdiag-disable:remark ;;
3784             -std=c99)             echo -Qstd=c99 ;;
3785             -flto)                echo -ipo ;;
3786         esac
3787     done
3788 }
3789
3790 icc_flags(){
3791     for flag; do
3792         case $flag in
3793             -flto)                echo -ipo ;;
3794             *)                    echo $flag ;;
3795         esac
3796     done
3797 }
3798
3799 pgi_flags(){
3800     for flag; do
3801         case $flag in
3802             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3803             -fomit-frame-pointer) echo -Mnoframe ;;
3804             -g)                   echo -gopt ;;
3805             *)                    echo $flag ;;
3806         esac
3807     done
3808 }
3809
3810 suncc_flags(){
3811     for flag; do
3812         case $flag in
3813             -march=*|-mcpu=*)
3814                 case "${flag#*=}" in
3815                     native)                   echo -xtarget=native       ;;
3816                     v9|niagara)               echo -xarch=sparc          ;;
3817                     ultrasparc)               echo -xarch=sparcvis       ;;
3818                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3819                     i586|pentium)             echo -xchip=pentium        ;;
3820                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3821                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3822                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3823                     pentium4*)          echo -xtarget=pentium4           ;;
3824                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3825                     *-sse3)             echo -xarch=sse3                 ;;
3826                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3827                     bonnell)                   echo -xarch=ssse3         ;;
3828                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3829                     westmere)                  echo -xtarget=westmere    ;;
3830                     silvermont)                echo -xarch=sse4_2        ;;
3831                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3832                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3833                                                echo -xarch=avx           ;;
3834                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3835                     btver1)                    echo -xarch=amdsse4a      ;;
3836                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3837                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3838                     k8|opteron|athlon64|athlon-fx)
3839                                                echo -xarch=sse2a         ;;
3840                     athlon*)                   echo -xarch=pentium_proa  ;;
3841                 esac
3842                 ;;
3843             -std=c99)             echo -xc99              ;;
3844             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3845             -fPIC)                echo -KPIC -xcode=pic32 ;;
3846             -W*,*)                echo $flag              ;;
3847             -f*-*|-W*|-mimpure-text)                      ;;
3848             -shared)              echo -G                 ;;
3849             *)                    echo $flag              ;;
3850         esac
3851     done
3852 }
3853
3854 tms470_flags(){
3855     for flag; do
3856         case $flag in
3857             -march=*|-mcpu=*)
3858                 case "${flag#*=}" in
3859                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3860                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3861                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3862                     armv6*|arm11*)          echo -mv=6   ;;
3863                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3864                                             echo -mv=5e  ;;
3865                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3866                 esac
3867                 ;;
3868             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3869             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3870             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3871             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3872             -msoft-float)   echo --float_support=vfplib       ;;
3873             -O[0-3]|-mf=*)  echo $flag                        ;;
3874             -g)             echo -g -mn                       ;;
3875             -pds=*)         echo $flag                        ;;
3876             -D*|-I*)        echo $flag                        ;;
3877             --gcc|--abi=*)  echo $flag                        ;;
3878             -me)            echo $flag                        ;;
3879         esac
3880     done
3881 }
3882
3883 probe_cc(){
3884     pfx=$1
3885     _cc=$2
3886     first=$3
3887
3888     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3889     unset _ld_o _ldflags _ld_lib _ld_path
3890     unset _depflags _DEPCMD _DEPFLAGS
3891     _flags_filter=echo
3892
3893     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3894         true # no-op to avoid reading stdin in following checks
3895     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3896         _type=llvm_gcc
3897         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3898         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3899         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3900         _cflags_speed='-O3'
3901         _cflags_size='-Os'
3902     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3903         _type=gcc
3904         gcc_version=$($_cc --version | head -n1)
3905         gcc_basever=$($_cc -dumpversion)
3906         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3907         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3908         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3909         case $gcc_basever in
3910             2) ;;
3911             2.*) ;;
3912             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3913         esac
3914         if [ "$first" = true ]; then
3915             case $gcc_basever in
3916                 4.2*)
3917                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3918             esac
3919         fi
3920         _cflags_speed='-O3'
3921         _cflags_size='-Os'
3922     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3923         _type=icc
3924         _ident=$($_cc --version | head -n1)
3925         _depflags='-MMD'
3926         _cflags_speed='-O3'
3927         _cflags_size='-Os'
3928         _cflags_noopt='-O1'
3929         _flags_filter=icc_flags
3930     elif $_cc -v 2>&1 | grep -q xlc; then
3931         _type=xlc
3932         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3933         _cflags_speed='-O5'
3934         _cflags_size='-O5 -qcompact'
3935     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3936         _type=ccc
3937         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3938         _DEPFLAGS='-M'
3939         _cflags_speed='-fast'
3940         _cflags_size='-O1'
3941         _flags_filter=ccc_flags
3942     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3943         test -d "$sysroot" || die "No valid sysroot specified."
3944         _type=armcc
3945         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3946         armcc_conf="$PWD/armcc.conf"
3947         $_cc --arm_linux_configure                 \
3948              --arm_linux_config_file="$armcc_conf" \
3949              --configure_sysroot="$sysroot"        \
3950              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3951              die "Error creating armcc configuration file."
3952         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3953         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3954         as_default="${cross_prefix}gcc"
3955         _depflags='-MMD'
3956         _cflags_speed='-O3'
3957         _cflags_size='-Os'
3958     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3959         _type=tms470
3960         _ident=$($_cc -version | head -n1 | tr -s ' ')
3961         _flags='--gcc --abi=eabi -me'
3962         _cc_e='-ppl -fe=$@'
3963         _cc_o='-fe=$@'
3964         _depflags='-ppa -ppd=$(@:.o=.d)'
3965         _cflags_speed='-O3 -mf=5'
3966         _cflags_size='-O3 -mf=2'
3967         _flags_filter=tms470_flags
3968     elif $_cc -v 2>&1 | grep -q clang; then
3969         _type=clang
3970         _ident=$($_cc --version 2>/dev/null | head -n1)
3971         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3972         _cflags_speed='-O3'
3973         _cflags_size='-Os'
3974     elif $_cc -V 2>&1 | grep -q Sun; then
3975         _type=suncc
3976         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3977         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3978         _DEPFLAGS='-xM1 -xc99'
3979         _ldflags='-std=c99'
3980         _cflags_speed='-O5'
3981         _cflags_size='-O5 -xspace'
3982         _flags_filter=suncc_flags
3983     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3984         _type=pathscale
3985         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3986         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3987         _cflags_speed='-O2'
3988         _cflags_size='-Os'
3989         _flags_filter='filter_out -Wdisabled-optimization'
3990     elif $_cc -v 2>&1 | grep -q Open64; then
3991         _type=open64
3992         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3993         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3994         _cflags_speed='-O2'
3995         _cflags_size='-Os'
3996         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3997     elif $_cc -V 2>&1 | grep -q Portland; then
3998         _type=pgi
3999         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4000         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4001         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4002         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4003         _cflags_noopt="-O"
4004         _flags_filter=pgi_flags
4005     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4006         _type=armasm
4007         _ident=$($_cc | head -n1)
4008         # 4509: "This form of conditional instruction is deprecated"
4009         _flags="-nologo -ignore 4509"
4010         _flags_filter=armasm_flags
4011     elif $_cc 2>&1 | grep -q Intel; then
4012         _type=icl
4013         _ident=$($_cc 2>&1 | head -n1)
4014         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4015         # Not only is O3 broken on 13.x+ but it is slower on all previous
4016         # versions (tested) as well.
4017         _cflags_speed="-O2"
4018         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4019         if $_cc 2>&1 | grep -q Linker; then
4020             _ld_o='-out:$@'
4021         else
4022             _ld_o='-Fe$@'
4023         fi
4024         _cc_o='-Fo$@'
4025         _cc_e='-P'
4026         _flags_filter=icl_flags
4027         _ld_lib='lib%.a'
4028         _ld_path='-libpath:'
4029         # -Qdiag-error to make icl error when seeing certain unknown arguments
4030         _flags='-nologo -Qdiag-error:4044,10157'
4031         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4032         # with MSVC which enables it by default.
4033         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4034         disable stripping
4035     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4036         _type=msvc
4037         _ident=$($_cc 2>&1 | head -n1)
4038         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4039         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4040         _cflags_speed="-O2"
4041         _cflags_size="-O1"
4042         if $_cc -nologo- 2>&1 | grep -q Linker; then
4043             _ld_o='-out:$@'
4044         else
4045             _ld_o='-Fe$@'
4046         fi
4047         _cc_o='-Fo$@'
4048         _cc_e='-P -Fi$@'
4049         _flags_filter=msvc_flags
4050         _ld_lib='lib%.a'
4051         _ld_path='-libpath:'
4052         _flags='-nologo'
4053         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4054         disable stripping
4055     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4056         _type=cparser
4057         _ident=$($_cc --version | head -n1)
4058         _depflags='-MMD'
4059         _cflags_speed='-O4'
4060         _cflags_size='-O2'
4061         _flags_filter=cparser_flags
4062     fi
4063
4064     eval ${pfx}_type=\$_type
4065     eval ${pfx}_ident=\$_ident
4066 }
4067
4068 set_ccvars(){
4069     eval ${1}_C=\${_cc_c-\${${1}_C}}
4070     eval ${1}_E=\${_cc_e-\${${1}_E}}
4071     eval ${1}_O=\${_cc_o-\${${1}_O}}
4072
4073     if [ -n "$_depflags" ]; then
4074         eval ${1}_DEPFLAGS=\$_depflags
4075     else
4076         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4077         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4078         eval DEP${1}FLAGS=\$_flags
4079     fi
4080 }
4081
4082 probe_cc cc "$cc" "true"
4083 cflags_filter=$_flags_filter
4084 cflags_speed=$_cflags_speed
4085 cflags_size=$_cflags_size
4086 cflags_noopt=$_cflags_noopt
4087 add_cflags $_flags $_cflags
4088 cc_ldflags=$_ldflags
4089 set_ccvars CC
4090
4091 probe_cc hostcc "$host_cc"
4092 host_cflags_filter=$_flags_filter
4093 add_host_cflags  $_flags $_cflags
4094 set_ccvars HOSTCC
4095
4096 test -n "$cc_type" && enable $cc_type ||
4097     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4098
4099 : ${as_default:=$cc}
4100 : ${objcc_default:=$cc}
4101 : ${dep_cc_default:=$cc}
4102 : ${ld_default:=$cc}
4103 : ${host_ld_default:=$host_cc}
4104 set_default ar as objcc dep_cc ld ln_s host_ld windres
4105
4106 probe_cc as "$as"
4107 asflags_filter=$_flags_filter
4108 add_asflags $_flags $_cflags
4109 set_ccvars AS
4110
4111 probe_cc objcc "$objcc"
4112 objcflags_filter=$_flags_filter
4113 add_objcflags $_flags $_cflags
4114 set_ccvars OBJC
4115
4116 probe_cc ld "$ld"
4117 ldflags_filter=$_flags_filter
4118 add_ldflags $_flags $_ldflags
4119 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4120 LD_O=${_ld_o-$LD_O}
4121 LD_LIB=${_ld_lib-$LD_LIB}
4122 LD_PATH=${_ld_path-$LD_PATH}
4123
4124 probe_cc hostld "$host_ld"
4125 host_ldflags_filter=$_flags_filter
4126 add_host_ldflags $_flags $_ldflags
4127 HOSTLD_O=${_ld_o-$HOSTLD_O}
4128
4129 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4130     probe_cc depcc "$dep_cc"
4131     CCDEP=${_DEPCMD:-$DEPCMD}
4132     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4133     DEPCCFLAGS=$_flags
4134 fi
4135
4136 if $ar 2>&1 | grep -q Microsoft; then
4137     arflags="-nologo"
4138     ar_o='-out:$@'
4139 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4140     arflags="rq"
4141     ar_o='$@'
4142 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4143     arflags='-Xany -r -c'
4144     ar_o='$@'
4145 elif $ar 2>&1 | grep -q "\[D\] "; then
4146     arflags="rcD"
4147     ar_o='$@'
4148 else
4149     arflags="rc"
4150     ar_o='$@'
4151 fi
4152
4153 add_cflags $extra_cflags
4154 add_cxxflags $extra_cxxflags
4155 add_objcflags $extra_objcflags
4156 add_asflags $extra_cflags
4157
4158 if test -n "$sysroot"; then
4159     case "$cc_type" in
4160         gcc|llvm_gcc|clang)
4161             add_cppflags --sysroot="$sysroot"
4162             add_ldflags --sysroot="$sysroot"
4163 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4164             add_cppflags -isysroot "$sysroot"
4165             add_ldflags -isysroot "$sysroot"
4166         ;;
4167         tms470)
4168             add_cppflags -I"$sysinclude"
4169             add_ldflags  --sysroot="$sysroot"
4170         ;;
4171     esac
4172 fi
4173
4174 if test "$cpu" = host; then
4175     enabled cross_compile &&
4176         die "--cpu=host makes no sense when cross-compiling."
4177
4178     case "$cc_type" in
4179         gcc|llvm_gcc)
4180             check_native(){
4181                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4182                 sed -n "/cc1.*$1=/{
4183                             s/.*$1=\\([^ ]*\\).*/\\1/
4184                             p
4185                             q
4186                         }" $TMPE
4187             }
4188             cpu=$(check_native -march || check_native -mcpu)
4189         ;;
4190         clang)
4191             check_native(){
4192                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4193                 sed -n "/cc1.*-target-cpu /{
4194                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4195                             p
4196                             q
4197                         }" $TMPE
4198             }
4199             cpu=$(check_native -march)
4200         ;;
4201     esac
4202
4203     test "${cpu:-host}" = host &&
4204         die "--cpu=host not supported with compiler $cc"
4205 fi
4206
4207 # Deal with common $arch aliases
4208 case "$arch" in
4209     aarch64|arm64)
4210         arch="aarch64"
4211     ;;
4212     arm*|iPad*|iPhone*)
4213         arch="arm"
4214     ;;
4215     mips*|IP*)
4216         case "$arch" in
4217         *el)
4218             add_cppflags -EL
4219             add_ldflags -EL
4220         ;;
4221         *eb)
4222             add_cppflags -EB
4223             add_ldflags -EB
4224         ;;
4225         esac
4226         arch="mips"
4227     ;;
4228     parisc*|hppa*)
4229         arch="parisc"
4230     ;;
4231     "Power Macintosh"|ppc*|powerpc*)
4232         arch="ppc"
4233     ;;
4234     s390|s390x)
4235         arch="s390"
4236     ;;
4237     sh4|sh)
4238         arch="sh4"
4239     ;;
4240     sun4*|sparc*)
4241         arch="sparc"
4242     ;;
4243     tilegx|tile-gx)
4244         arch="tilegx"
4245     ;;
4246     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4247         arch="x86"
4248     ;;
4249 esac
4250
4251 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4252 enable $arch
4253
4254 # Add processor-specific flags
4255 if enabled aarch64; then
4256
4257     case $cpu in
4258         armv*)
4259             cpuflags="-march=$cpu"
4260         ;;
4261         *)
4262             cpuflags="-mcpu=$cpu"
4263         ;;
4264     esac
4265
4266 elif enabled alpha; then
4267
4268     cpuflags="-mcpu=$cpu"
4269
4270 elif enabled arm; then
4271
4272     check_arm_arch() {
4273         check_cpp_condition stddef.h \
4274             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4275             $cpuflags
4276     }
4277
4278     probe_arm_arch() {
4279         if   check_arm_arch 4;        then echo armv4
4280         elif check_arm_arch 4T;       then echo armv4t
4281         elif check_arm_arch 5;        then echo armv5
4282         elif check_arm_arch 5E;       then echo armv5e
4283         elif check_arm_arch 5T;       then echo armv5t
4284         elif check_arm_arch 5TE;      then echo armv5te
4285         elif check_arm_arch 5TEJ;     then echo armv5te
4286         elif check_arm_arch 6;        then echo armv6
4287         elif check_arm_arch 6J;       then echo armv6j
4288         elif check_arm_arch 6K;       then echo armv6k
4289         elif check_arm_arch 6Z;       then echo armv6z
4290         elif check_arm_arch 6ZK;      then echo armv6zk
4291         elif check_arm_arch 6T2;      then echo armv6t2
4292         elif check_arm_arch 7;        then echo armv7
4293         elif check_arm_arch 7A  7_A;  then echo armv7-a
4294         elif check_arm_arch 7S;       then echo armv7-a
4295         elif check_arm_arch 7R  7_R;  then echo armv7-r
4296         elif check_arm_arch 7M  7_M;  then echo armv7-m
4297         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4298         elif check_arm_arch 8A  8_A;  then echo armv8-a
4299         fi
4300     }
4301
4302     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4303
4304     case $cpu in
4305         armv*)
4306             cpuflags="-march=$cpu"
4307             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4308         ;;
4309         *)
4310             cpuflags="-mcpu=$cpu"
4311             case $cpu in
4312                 cortex-a*)                               subarch=armv7a  ;;
4313                 cortex-r*)                               subarch=armv7r  ;;
4314                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4315                 arm11*)                                  subarch=armv6   ;;
4316                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4317                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4318                 *)                             subarch=$(probe_arm_arch) ;;
4319             esac
4320         ;;
4321     esac
4322
4323     case "$subarch" in
4324         armv5t*)    enable fast_clz                ;;
4325         armv[6-8]*)
4326             enable fast_clz
4327             disabled fast_unaligned || enable fast_unaligned
4328             ;;
4329     esac
4330
4331 elif enabled avr32; then
4332
4333     case $cpu in
4334         ap7[02]0[0-2])
4335             subarch="avr32_ap"
4336             cpuflags="-mpart=$cpu"
4337         ;;
4338         ap)
4339             subarch="avr32_ap"
4340             cpuflags="-march=$cpu"
4341         ;;
4342         uc3[ab]*)
4343             subarch="avr32_uc"
4344             cpuflags="-mcpu=$cpu"
4345         ;;
4346         uc)
4347             subarch="avr32_uc"
4348             cpuflags="-march=$cpu"
4349         ;;
4350     esac
4351
4352 elif enabled bfin; then
4353
4354     cpuflags="-mcpu=$cpu"
4355
4356 elif enabled mips; then
4357
4358     cpuflags="-march=$cpu"
4359
4360     if [ "$cpu" != "generic" ]; then
4361         disable mips32r2
4362         disable mips32r5
4363         disable mips64r2
4364         disable mips32r6
4365         disable mips64r6
4366         disable loongson2
4367         disable loongson3
4368
4369         case $cpu in
4370             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4371                 enable mips32r2
4372                 disable msa
4373             ;;
4374             p5600|i6400|p6600)
4375                 disable mipsdsp
4376                 disable mipsdspr2
4377             ;;
4378             loongson*)
4379                 enable loongson2
4380                 enable loongson3
4381                 enable local_aligned_8 local_aligned_16 local_aligned_32
4382                 enable simd_align_16
4383                 enable fast_64bit
4384                 enable fast_clz
4385                 enable fast_cmov
4386                 enable fast_unaligned
4387                 disable aligned_stack
4388                 disable mipsfpu
4389                 disable mipsdsp
4390                 disable mipsdspr2
4391                 case $cpu in
4392                     loongson3*)
4393                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4394                     ;;
4395                     loongson2e)
4396                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4397                     ;;
4398                     loongson2f)
4399                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4400                     ;;
4401                 esac
4402             ;;
4403             *)
4404                 # Unknown CPU. Disable everything.
4405                 warn "unknown CPU. Disabling all MIPS optimizations."
4406                 disable mipsfpu
4407                 disable mipsdsp
4408                 disable mipsdspr2
4409                 disable msa
4410                 disable mmi
4411             ;;
4412         esac
4413
4414         case $cpu in
4415             24kc)
4416                 disable mipsfpu
4417                 disable mipsdsp
4418                 disable mipsdspr2
4419             ;;
4420             24kf*)
4421                 disable mipsdsp
4422                 disable mipsdspr2
4423             ;;
4424             24kec|34kc|1004kc)
4425                 disable mipsfpu
4426                 disable mipsdspr2
4427             ;;
4428             24kef*|34kf*|1004kf*)
4429                 disable mipsdspr2
4430             ;;
4431             74kc)
4432                 disable mipsfpu
4433             ;;
4434             p5600)
4435                 enable mips32r5
4436                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4437             ;;
4438             i6400)
4439                 enable mips64r6
4440                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4441             ;;
4442             p6600)
4443                 enable mips64r6
4444                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4445             ;;
4446         esac
4447     else
4448         # We do not disable anything. Is up to the user to disable the unwanted features.
4449         warn 'generic cpu selected'
4450     fi
4451
4452 elif enabled ppc; then
4453
4454     disable ldbrx
4455
4456     case $(tolower $cpu) in
4457         601|ppc601|powerpc601)
4458             cpuflags="-mcpu=601"
4459             disable altivec
4460         ;;
4461         603*|ppc603*|powerpc603*)
4462             cpuflags="-mcpu=603"
4463             disable altivec
4464         ;;
4465         604*|ppc604*|powerpc604*)
4466             cpuflags="-mcpu=604"
4467             disable altivec
4468         ;;
4469         g3|75*|ppc75*|powerpc75*)
4470             cpuflags="-mcpu=750"
4471             disable altivec
4472         ;;
4473         g4|745*|ppc745*|powerpc745*)
4474             cpuflags="-mcpu=7450"
4475             disable vsx
4476         ;;
4477         74*|ppc74*|powerpc74*)
4478             cpuflags="-mcpu=7400"
4479             disable vsx
4480         ;;
4481         g5|970|ppc970|powerpc970)
4482             cpuflags="-mcpu=970"
4483             disable vsx
4484         ;;
4485         power[3-6]*)
4486             cpuflags="-mcpu=$cpu"
4487             disable vsx
4488         ;;
4489         power[7-8]*)
4490             cpuflags="-mcpu=$cpu"
4491         ;;
4492         cell)
4493             cpuflags="-mcpu=cell"
4494             enable ldbrx
4495             disable vsx
4496         ;;
4497         e500mc)
4498             cpuflags="-mcpu=e500mc"
4499             disable altivec
4500         ;;
4501         e500v2)
4502             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4503             disable altivec
4504             disable dcbzl
4505         ;;
4506         e500)
4507             cpuflags="-mcpu=8540 -mhard-float"
4508             disable altivec
4509             disable dcbzl
4510         ;;
4511     esac
4512
4513 elif enabled sparc; then
4514
4515     case $cpu in
4516         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4517             cpuflags="-mcpu=$cpu"
4518         ;;
4519         ultrasparc*|niagara[234])
4520             cpuflags="-mcpu=$cpu"
4521         ;;
4522     esac
4523
4524 elif enabled x86; then
4525
4526     case $cpu in
4527         i[345]86|pentium)
4528             cpuflags="-march=$cpu"
4529             disable i686
4530             disable mmx
4531         ;;
4532         # targets that do NOT support nopl and conditional mov (cmov)
4533         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4534             cpuflags="-march=$cpu"
4535             disable i686
4536         ;;
4537         # targets that do support nopl and conditional mov (cmov)
4538         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4539         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4540         |amdfam10|barcelona|b[dt]ver*|znver*)
4541             cpuflags="-march=$cpu"
4542             enable i686
4543             enable fast_cmov
4544         ;;
4545         # targets that do support conditional mov but on which it's slow
4546         pentium4|pentium4m|prescott|nocona)
4547             cpuflags="-march=$cpu"
4548             enable i686
4549             disable fast_cmov
4550         ;;
4551     esac
4552
4553 fi
4554
4555 if [ "$cpu" != generic ]; then
4556     add_cflags  $cpuflags
4557     add_asflags $cpuflags
4558     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4559 fi
4560
4561 # compiler sanity check
4562 check_exec <<EOF
4563 int main(void){ return 0; }
4564 EOF
4565 if test "$?" != 0; then
4566     echo "$cc is unable to create an executable file."
4567     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4568         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4569         echo "Only do this if you know what cross compiling means."
4570     fi
4571     die "C compiler test failed."
4572 fi
4573
4574 add_cppflags -D_ISOC99_SOURCE
4575 add_cxxflags -D__STDC_CONSTANT_MACROS
4576 add_cxxflags -std=c++98
4577 check_cflags -std=c99
4578 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4579 #include <stdlib.h>
4580 EOF
4581 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4582 #include <stdlib.h>
4583 EOF
4584
4585 add_host_cppflags -D_ISOC99_SOURCE
4586 check_host_cflags -std=c99
4587 check_host_cflags -Wall
4588 check_host_cflags -O3
4589
4590 check_64bit(){
4591     arch32=$1
4592     arch64=$2
4593     expr=$3
4594     check_code cc "" "int test[2*($expr) - 1]" &&
4595         subarch=$arch64 || subarch=$arch32
4596 }
4597
4598 case "$arch" in
4599     aarch64|alpha|ia64)
4600         spic=$shared
4601     ;;
4602     mips)
4603         check_64bit mips mips64 '_MIPS_SIM > 1'
4604         spic=$shared
4605     ;;
4606     parisc)
4607         check_64bit parisc parisc64 'sizeof(void *) > 4'
4608         spic=$shared
4609     ;;
4610     ppc)
4611         check_64bit ppc ppc64 'sizeof(void *) > 4'
4612         spic=$shared
4613     ;;
4614     s390)
4615         check_64bit s390 s390x 'sizeof(void *) > 4'
4616         spic=$shared
4617     ;;
4618     sparc)
4619         check_64bit sparc sparc64 'sizeof(void *) > 4'
4620         spic=$shared
4621     ;;
4622     x86)
4623         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4624         # Treat x32 as x64 for now. Note it also needs spic=$shared
4625         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4626             subarch=x86_64
4627         if test "$subarch" = "x86_64"; then
4628             spic=$shared
4629         fi
4630     ;;
4631     ppc)
4632         check_cc <<EOF && subarch="ppc64"
4633         int test[(int)sizeof(char*) - 7];
4634 EOF
4635     ;;
4636 esac
4637
4638 enable $subarch
4639 enabled spic && enable_weak pic
4640
4641 # OS specific
4642 case $target_os in
4643     aix)
4644         SHFLAGS=-shared
4645         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4646         enabled shared && add_ldflags -Wl,-brtl
4647         ;;
4648     android)
4649         disable symver
4650         enable section_data_rel_ro
4651         SLIB_INSTALL_NAME='$(SLIBNAME)'
4652         SLIB_INSTALL_LINKS=
4653         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4654         ;;
4655     haiku)
4656         prefix_default="/boot/common"
4657         network_extralibs="-lnetwork"
4658         host_libs=
4659         ;;
4660     sunos)
4661         SHFLAGS='-shared -Wl,-h,$$(@F)'
4662         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4663         network_extralibs="-lsocket -lnsl"
4664         add_cppflags -D__EXTENSIONS__
4665         # When using suncc to build, the Solaris linker will mark
4666         # an executable with each instruction set encountered by
4667         # the Solaris assembler.  As our libraries contain their own
4668         # guards for processor-specific code, instead suppress
4669         # generation of the HWCAPS ELF section on Solaris x86 only.
4670         enabled_all suncc x86 &&
4671             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4672             add_ldflags -Wl,-M,mapfile
4673         nm_default='nm -P -g'
4674         version_script='-M'
4675         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4676         ;;
4677     netbsd)
4678         disable symver
4679         oss_indev_extralibs="-lossaudio"
4680         oss_outdev_extralibs="-lossaudio"
4681         enabled gcc || check_ldflags -Wl,-zmuldefs
4682         ;;
4683     openbsd|bitrig)
4684         disable symver
4685         SHFLAGS='-shared'
4686         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4687         SLIB_INSTALL_LINKS=
4688         oss_indev_extralibs="-lossaudio"
4689         oss_outdev_extralibs="-lossaudio"
4690         ;;
4691     dragonfly)
4692         disable symver
4693         ;;
4694     freebsd)
4695         ;;
4696     bsd/os)
4697         add_extralibs -lpoll -lgnugetopt
4698         strip="strip -d"
4699         ;;
4700     darwin)
4701         enabled ppc && add_asflags -force_cpusubtype_ALL
4702         install_name_dir_default='$(SHLIBDIR)'
4703         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4704         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4705         strip="${strip} -x"
4706         add_ldflags -Wl,-dynamic,-search_paths_first
4707         SLIBSUF=".dylib"
4708         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4709         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4710         objformat="macho"
4711         enabled x86_64 && objformat="macho64"
4712         enabled_any pic shared x86_64 ||
4713             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4714         check_header dispatch/dispatch.h &&
4715             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4716         version_script='-exported_symbols_list'
4717         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4718         ;;
4719     msys*)
4720         die "Native MSYS builds are discouraged, please use the MINGW environment."
4721         ;;
4722     mingw32*|mingw64*)
4723         if test $target_os = "mingw32ce"; then
4724             disable network
4725         else
4726             target_os=mingw32
4727         fi
4728         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4729         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4730         LIBTARGET=i386
4731         if enabled x86_64; then
4732             LIBTARGET="i386:x86-64"
4733         elif enabled arm; then
4734             LIBTARGET=arm-wince
4735         fi
4736         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4737         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4738         shlibdir_default="$bindir_default"
4739         SLIBPREF=""
4740         SLIBSUF=".dll"
4741         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4742         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4743         dlltool="${cross_prefix}dlltool"
4744         if check_cmd lib.exe -list; then
4745             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4746             if enabled x86_64; then
4747                 LIBTARGET=x64
4748             fi
4749         elif check_cmd $dlltool --version; then
4750             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4751         fi
4752         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4753         SLIB_INSTALL_LINKS=
4754         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4755         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4756         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4757         objformat="win32"
4758         ranlib=:
4759         enable dos_paths
4760         check_ldflags -Wl,--nxcompat,--dynamicbase
4761         # Lets work around some stupidity in binutils.
4762         # ld will strip relocations from executables even though we need them
4763         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4764         # however ld then forgets what the entry point should be (oops) so we
4765         # have to manually (re)set it.
4766         if enabled x86_32; then
4767             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4768         elif enabled x86_64; then
4769             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4770             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4771             # Set image base >4GB for extra entropy with HEASLR
4772             add_ldexeflags -Wl,--image-base,0x140000000
4773             append SHFLAGS -Wl,--image-base,0x180000000
4774         fi
4775         ;;
4776     win32|win64)
4777         disable symver
4778         if enabled shared; then
4779             # Link to the import library instead of the normal static library
4780             # for shared libs.
4781             LD_LIB='%.lib'
4782             # Cannot build both shared and static libs with MSVC or icl.
4783             disable static
4784         fi
4785         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4786         shlibdir_default="$bindir_default"
4787         SLIBPREF=""
4788         SLIBSUF=".dll"
4789         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4790         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4791         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4792         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4793         SLIB_INSTALL_LINKS=
4794         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4795         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4796         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4797         objformat="win32"
4798         ranlib=:
4799         enable dos_paths
4800         ;;
4801     cygwin*)
4802         target_os=cygwin
4803         shlibdir_default="$bindir_default"
4804         SLIBPREF="cyg"
4805         SLIBSUF=".dll"
4806         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4807         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4808         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4809         SLIB_INSTALL_LINKS=
4810         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4811         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4812         objformat="win32"
4813         enable dos_paths
4814         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4815         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4816         ;;
4817     *-dos|freedos|opendos)
4818         network_extralibs="-lsocket"
4819         objformat="coff"
4820         enable dos_paths
4821         add_cppflags -U__STRICT_ANSI__
4822         ;;
4823     linux)
4824         enable dv1394
4825         enable section_data_rel_ro
4826         ;;
4827     irix*)
4828         target_os=irix
4829         ranlib="echo ignoring ranlib"
4830         ;;
4831     os/2*)
4832         strip="lxlite -CS"
4833         objformat="aout"
4834         add_cppflags -D_GNU_SOURCE
4835         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4836         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4837         LIBSUF="_s.a"
4838         SLIBPREF=""
4839         SLIBSUF=".dll"
4840         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4841         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4842         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4843             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4844             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4845             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4846             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4847         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4848             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4849         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4850         SLIB_INSTALL_LINKS=
4851         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4852         enable dos_paths
4853         enable_weak os2threads
4854         ;;
4855     gnu/kfreebsd)
4856         add_cppflags -D_BSD_SOURCE
4857         ;;
4858     gnu)
4859         ;;
4860     qnx)
4861         add_cppflags -D_QNX_SOURCE
4862         network_extralibs="-lsocket"
4863         ;;
4864     symbian)
4865         SLIBSUF=".dll"
4866         enable dos_paths
4867         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4868         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4869         add_ldflags -Wl,--target1-abs,--no-undefined \
4870                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4871                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4872         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4873                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4874                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4875         ;;
4876     osf1)
4877         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4878         ;;
4879     minix)
4880         ;;