avcodec/omx: fix deprecation warning for ff_alloc_packet
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94   --install-name-dir=DIR   Darwin directory name for installed targets
95
96 Licensing options:
97   --enable-gpl             allow use of GPL code, the resulting libs
98                            and binaries will be under GPL [no]
99   --enable-version3        upgrade (L)GPL to version 3 [no]
100   --enable-nonfree         allow use of nonfree code, the resulting libs
101                            and binaries will be unredistributable [no]
102
103 Configuration options:
104   --disable-static         do not build static libraries [no]
105   --enable-shared          build shared libraries [no]
106   --enable-small           optimize for size instead of speed
107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
108   --enable-gray            enable full grayscale support (slower color)
109   --disable-swscale-alpha  disable alpha channel support in swscale
110   --disable-all            disable building components, libraries and programs
111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
112   --enable-raise-major     increase major version numbers in sonames [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --enable-avisynth        enable reading of AviSynth script files [no]
205   --disable-bzlib          disable bzlib [autodetect]
206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
207   --enable-frei0r          enable frei0r video filtering [no]
208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
209                            if openssl, librtmp or gmp is not used [no]
210   --enable-gmp             enable gmp, needed for rtmp(t)e support
211                            if openssl or librtmp is not used [no]
212   --enable-gnutls          enable gnutls, needed for https support
213                            if openssl is not used [no]
214   --disable-iconv          disable iconv [autodetect]
215   --enable-jni             enable JNI support [no]
216   --enable-ladspa          enable LADSPA audio filtering [no]
217   --enable-libass          enable libass subtitles rendering,
218                            needed for subtitles and ass filter [no]
219   --enable-libbluray       enable BluRay reading using libbluray [no]
220   --enable-libbs2b         enable bs2b DSP library [no]
221   --enable-libcaca         enable textual display using libcaca [no]
222   --enable-libcelt         enable CELT decoding via libcelt [no]
223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
225                            and libraw1394 [no]
226   --enable-libebur128      enable libebur128 for EBU R128 measurement,
227                            needed for loudnorm filter [no]
228   --enable-libfaac         enable AAC encoding via libfaac [no]
229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
234   --enable-libgme          enable Game Music Emu via libgme [no]
235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
238   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
239   --enable-libmodplug      enable ModPlug via libmodplug [no]
240   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
241   --enable-libnut          enable NUT (de)muxing via libnut,
242                            native (de)muxer exists [no]
243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
245   --enable-libopencv       enable video filtering via libopencv [no]
246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
248   --enable-libopus         enable Opus de/encoding via libopus [no]
249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
250   --enable-librubberband   enable rubberband needed for rubberband filter [no]
251   --enable-librtmp         enable RTMP[E] support via librtmp [no]
252   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
256   --enable-libsoxr         enable Include libsoxr resampling [no]
257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
258   --enable-libssh          enable SFTP protocol via libssh [no]
259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
260   --enable-libtheora       enable Theora encoding via libtheora [no]
261   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
262   --enable-libv4l2         enable libv4l2/v4l-utils [no]
263   --enable-libvidstab      enable video stabilization using vid.stab [no]
264   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
265   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
266                            native implementation exists [no]
267   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
268   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
269   --enable-libwebp         enable WebP encoding via libwebp [no]
270   --enable-libx264         enable H.264 encoding via x264 [no]
271   --enable-libx265         enable HEVC encoding via x265 [no]
272   --enable-libxavs         enable AVS encoding via xavs [no]
273   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
274   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
275   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
276   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
277   --enable-libxvid         enable Xvid encoding via xvidcore,
278                            native MPEG-4/Xvid encoder exists [no]
279   --enable-libzimg         enable z.lib, needed for zscale filter [no]
280   --enable-libzmq          enable message passing via libzmq [no]
281   --enable-libzvbi         enable teletext support via libzvbi [no]
282   --disable-lzma           disable lzma [autodetect]
283   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
284   --enable-mediacodec      enable Android MediaCodec support [no]
285   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
286   --enable-openal          enable OpenAL 1.1 capture support [no]
287   --enable-opencl          enable OpenCL code
288   --enable-opengl          enable OpenGL rendering [no]
289   --enable-openssl         enable openssl, needed for https support
290                            if gnutls is not used [no]
291   --disable-schannel       disable SChannel SSP, needed for TLS support on
292                            Windows if openssl and gnutls are not used [autodetect]
293   --disable-sdl            disable sdl [autodetect]
294   --disable-securetransport disable Secure Transport, needed for TLS support
295                            on OSX if openssl and gnutls are not used [autodetect]
296   --enable-x11grab         enable X11 grabbing (legacy) [no]
297   --disable-xlib           disable xlib [autodetect]
298   --disable-zlib           disable zlib [autodetect]
299
300   The following libraries provide various hardware acceleration features:
301   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
302   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
303   --enable-cuvid           enable Nvidia CUVID support [autodetect]
304   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
305   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
306   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
307   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
308   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
309   --enable-nvenc           enable Nvidia video encoding code [no]
310   --enable-omx             enable OpenMAX IL code [no]
311   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
312   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
313   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
314   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
315   --disable-videotoolbox   disable VideoToolbox code [autodetect]
316
317 Toolchain options:
318   --arch=ARCH              select architecture [$arch]
319   --cpu=CPU                select the minimum required CPU (affects
320                            instruction selection, may crash on older CPUs)
321   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
322   --progs-suffix=SUFFIX    program name suffix []
323   --enable-cross-compile   assume a cross-compiler is used
324   --sysroot=PATH           root of cross-build tree
325   --sysinclude=PATH        location of cross-build system headers
326   --target-os=OS           compiler targets OS [$target_os]
327   --target-exec=CMD        command to run executables on target
328   --target-path=DIR        path to view of build directory on target
329   --target-samples=DIR     path to samples directory on target
330   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
331   --toolchain=NAME         set tool defaults according to NAME
332   --nm=NM                  use nm tool NM [$nm_default]
333   --ar=AR                  use archive tool AR [$ar_default]
334   --as=AS                  use assembler AS [$as_default]
335   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
336   --strip=STRIP            use strip tool STRIP [$strip_default]
337   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
338   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
339   --cc=CC                  use C compiler CC [$cc_default]
340   --cxx=CXX                use C compiler CXX [$cxx_default]
341   --objcc=OCC              use ObjC compiler OCC [$cc_default]
342   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
343   --ld=LD                  use linker LD [$ld_default]
344   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
345   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
346   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
347   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
348   --host-cc=HOSTCC         use host C compiler HOSTCC
349   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
350   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
351   --host-ld=HOSTLD         use host linker HOSTLD
352   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
353   --host-libs=HLIBS        use libs HLIBS when linking for host
354   --host-os=OS             compiler host OS [$target_os]
355   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
356   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
357   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
358   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
359   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
360   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
361   --extra-libs=ELIBS       add ELIBS [$ELIBS]
362   --extra-version=STRING   version string suffix []
363   --optflags=OPTFLAGS      override optimization-related compiler flags
364   --build-suffix=SUFFIX    library name suffix []
365   --enable-pic             build position-independent code
366   --enable-thumb           compile for Thumb instruction set
367   --enable-lto             use link-time optimization
368   --env="ENV=override"     override the environment variables
369
370 Advanced options (experts only):
371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
372   --custom-allocator=NAME  use a supported custom allocator
373   --disable-symver         disable symbol versioning
374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
375   --disable-safe-bitstream-reader
376                            disable buffer boundary checking in bitreaders
377                            (faster, but may crash)
378   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
379   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
380
381 Optimization options (experts only):
382   --disable-asm            disable all assembly optimizations
383   --disable-altivec        disable AltiVec optimizations
384   --disable-vsx            disable VSX optimizations
385   --disable-power8         disable POWER8 optimizations
386   --disable-amd3dnow       disable 3DNow! optimizations
387   --disable-amd3dnowext    disable 3DNow! extended optimizations
388   --disable-mmx            disable MMX optimizations
389   --disable-mmxext         disable MMXEXT optimizations
390   --disable-sse            disable SSE optimizations
391   --disable-sse2           disable SSE2 optimizations
392   --disable-sse3           disable SSE3 optimizations
393   --disable-ssse3          disable SSSE3 optimizations
394   --disable-sse4           disable SSE4 optimizations
395   --disable-sse42          disable SSE4.2 optimizations
396   --disable-avx            disable AVX optimizations
397   --disable-xop            disable XOP optimizations
398   --disable-fma3           disable FMA3 optimizations
399   --disable-fma4           disable FMA4 optimizations
400   --disable-avx2           disable AVX2 optimizations
401   --disable-aesni          disable AESNI optimizations
402   --disable-armv5te        disable armv5te optimizations
403   --disable-armv6          disable armv6 optimizations
404   --disable-armv6t2        disable armv6t2 optimizations
405   --disable-vfp            disable VFP optimizations
406   --disable-neon           disable NEON optimizations
407   --disable-inline-asm     disable use of inline assembly
408   --disable-yasm           disable use of nasm/yasm assembly
409   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
410   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
411   --disable-msa            disable MSA optimizations
412   --disable-mipsfpu        disable floating point MIPS optimizations
413   --disable-mmi            disable Loongson SIMD optimizations
414   --disable-fast-unaligned consider unaligned accesses slow
415
416 Developer options (useful when working on FFmpeg itself):
417   --disable-debug          disable debugging symbols
418   --enable-debug=LEVEL     set the debug level [$debuglevel]
419   --disable-optimizations  disable compiler optimizations
420   --enable-extra-warnings  enable more compiler warnings
421   --disable-stripping      disable stripping of executables and shared libraries
422   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
423                            2 causes a slowdown at runtime.
424   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
425   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
426                            leaks and errors, using the specified valgrind binary.
427                            Cannot be combined with --target-exec
428   --enable-ftrapv          Trap arithmetic overflows
429   --samples=PATH           location of test samples for FATE, if not set use
430                            \$FATE_SAMPLES at make invocation time.
431   --enable-neon-clobber-test check NEON registers for clobbering (should be
432                            used only for debugging purposes)
433   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
434                            should be used only for debugging purposes)
435   --enable-random          randomly enable/disable components
436   --disable-random
437   --enable-random=LIST     randomly enable/disable specific components or
438   --disable-random=LIST    component groups. LIST is a comma-separated list
439                            of NAME[:PROB] entries where NAME is a component
440                            (group) and PROB the probability associated with
441                            NAME (default 0.5).
442   --random-seed=VALUE      seed value for --enable/disable-random
443   --disable-valgrind-backtrace do not print a backtrace under Valgrind
444                            (only applies to --disable-optimizations builds)
445
446 NOTE: Object files are built at the place where configure is launched.
447 EOF
448   exit 0
449 }
450
451 quotes='""'
452 if test -t 1 && which tput >/dev/null 2>&1; then
453     ncolors=$(tput colors)
454     if test -n "$ncolors" && test $ncolors -ge 8; then
455         bold_color=$(tput bold)
456         warn_color=$(tput setaf 3)
457         error_color=$(tput setaf 1)
458         reset_color=$(tput sgr0)
459     fi
460     # 72 used instead of 80 since that's the default of pr
461     ncols=$(tput cols)
462 fi
463 : ${ncols:=72}
464
465 log(){
466     echo "$@" >> $logfile
467 }
468
469 log_file(){
470     log BEGIN $1
471     pr -n -t $1 >> $logfile
472     log END $1
473 }
474
475 warn(){
476     log "WARNING: $*"
477     WARNINGS="${WARNINGS}WARNING: $*\n"
478 }
479
480 die(){
481     log "$@"
482     echo "$error_color$bold_color$@$reset_color"
483     cat <<EOF
484
485 If you think configure made a mistake, make sure you are using the latest
486 version from Git.  If the latest version fails, report the problem to the
487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
488 EOF
489     if disabled logging; then
490         cat <<EOF
491 Rerun configure with logging enabled (do not use --disable-logging), and
492 include the log this produces with your report.
493 EOF
494     else
495         cat <<EOF
496 Include the log file "$logfile" produced by configure as this will help
497 solve the problem.
498 EOF
499     fi
500     exit 1
501 }
502
503 # Avoid locale weirdness, besides we really just want to translate ASCII.
504 toupper(){
505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
506 }
507
508 tolower(){
509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
510 }
511
512 c_escape(){
513     echo "$*" | sed 's/["\\]/\\\0/g'
514 }
515
516 sh_quote(){
517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
519     echo "$v"
520 }
521
522 cleanws(){
523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
524 }
525
526 filter(){
527     pat=$1
528     shift
529     for v; do
530         eval "case $v in $pat) echo $v ;; esac"
531     done
532 }
533
534 filter_out(){
535     pat=$1
536     shift
537     for v; do
538         eval "case $v in $pat) ;; *) echo $v ;; esac"
539     done
540 }
541
542 map(){
543     m=$1
544     shift
545     for v; do eval $m; done
546 }
547
548 add_suffix(){
549     suffix=$1
550     shift
551     for v; do echo ${v}${suffix}; done
552 }
553
554 set_all(){
555     value=$1
556     shift
557     for var in $*; do
558         eval $var=$value
559     done
560 }
561
562 set_weak(){
563     value=$1
564     shift
565     for var; do
566         eval : \${$var:=$value}
567     done
568 }
569
570 sanitize_var_name(){
571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
572 }
573
574 set_safe(){
575     var=$1
576     shift
577     eval $(sanitize_var_name "$var")='$*'
578 }
579
580 get_safe(){
581     eval echo \$$(sanitize_var_name "$1")
582 }
583
584 pushvar(){
585     for pvar in $*; do
586         eval level=\${${pvar}_level:=0}
587         eval ${pvar}_${level}="\$$pvar"
588         eval ${pvar}_level=$(($level+1))
589     done
590 }
591
592 popvar(){
593     for pvar in $*; do
594         eval level=\${${pvar}_level:-0}
595         test $level = 0 && continue
596         eval level=$(($level-1))
597         eval $pvar="\${${pvar}_${level}}"
598         eval ${pvar}_level=$level
599         eval unset ${pvar}_${level}
600     done
601 }
602
603 enable(){
604     set_all yes $*
605 }
606
607 disable(){
608     set_all no $*
609 }
610
611 enable_weak(){
612     set_weak yes $*
613 }
614
615 disable_weak(){
616     set_weak no $*
617 }
618
619 enable_safe(){
620     for var; do
621         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
622     done
623 }
624
625 disable_safe(){
626     for var; do
627         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
628     done
629 }
630
631 do_enable_deep(){
632     for var; do
633         enabled $var && continue
634         eval sel="\$${var}_select"
635         eval sgs="\$${var}_suggest"
636         pushvar var sgs
637         enable_deep $sel
638         popvar sgs
639         enable_deep_weak $sgs
640         popvar var
641     done
642 }
643
644 enable_deep(){
645     do_enable_deep $*
646     enable $*
647 }
648
649 enable_deep_weak(){
650     for var; do
651         disabled $var && continue
652         pushvar var
653         do_enable_deep $var
654         popvar var
655         enable_weak $var
656     done
657 }
658
659 enabled(){
660     test "${1#!}" = "$1" && op='=' || op=!=
661     eval test "x\$${1#!}" $op "xyes"
662 }
663
664 disabled(){
665     test "${1#!}" = "$1" && op='=' || op=!=
666     eval test "x\$${1#!}" $op "xno"
667 }
668
669 enabled_all(){
670     for opt; do
671         enabled $opt || return 1
672     done
673 }
674
675 disabled_all(){
676     for opt; do
677         disabled $opt || return 1
678     done
679 }
680
681 enabled_any(){
682     for opt; do
683         enabled $opt && return 0
684     done
685 }
686
687 disabled_any(){
688     for opt; do
689         disabled $opt && return 0
690     done
691     return 1
692 }
693
694 set_default(){
695     for opt; do
696         eval : \${$opt:=\$${opt}_default}
697     done
698 }
699
700 is_in(){
701     value=$1
702     shift
703     for var in $*; do
704         [ $var = $value ] && return 0
705     done
706     return 1
707 }
708
709 do_check_deps(){
710     for cfg; do
711         cfg="${cfg#!}"
712         enabled ${cfg}_checking && die "Circular dependency for $cfg."
713         disabled ${cfg}_checking && continue
714         enable ${cfg}_checking
715         append allopts $cfg
716
717         eval dep_all="\$${cfg}_deps"
718         eval dep_any="\$${cfg}_deps_any"
719         eval dep_sel="\$${cfg}_select"
720         eval dep_sgs="\$${cfg}_suggest"
721         eval dep_ifa="\$${cfg}_if"
722         eval dep_ifn="\$${cfg}_if_any"
723
724         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
725         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
726         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
727
728         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
729         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
730         enabled_all  $dep_all || disable $cfg
731         enabled_any  $dep_any || disable $cfg
732         disabled_any $dep_sel && disable $cfg
733
734         if enabled $cfg; then
735             enable_deep $dep_sel
736             enable_deep_weak $dep_sgs
737         fi
738
739         disable ${cfg}_checking
740     done
741 }
742
743 check_deps(){
744     unset allopts
745
746     do_check_deps "$@"
747
748     for cfg in $allopts; do
749         enabled $cfg || continue
750         eval dep_extralibs="\$${cfg}_extralibs"
751         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
752     done
753 }
754
755 print_config(){
756     pfx=$1
757     files=$2
758     shift 2
759     map 'eval echo "$v \${$v:-no}"' "$@" |
760     awk "BEGIN { split(\"$files\", files) }
761         {
762             c = \"$pfx\" toupper(\$1);
763             v = \$2;
764             sub(/yes/, 1, v);
765             sub(/no/,  0, v);
766             for (f in files) {
767                 file = files[f];
768                 if (file ~ /\\.h\$/) {
769                     printf(\"#define %s %d\\n\", c, v) >>file;
770                 } else if (file ~ /\\.asm\$/) {
771                     printf(\"%%define %s %d\\n\", c, v) >>file;
772                 } else if (file ~ /\\.mak\$/) {
773                     n = -v ? \"\" : \"!\";
774                     printf(\"%s%s=yes\\n\", n, c) >>file;
775                 } else if (file ~ /\\.texi\$/) {
776                     pre = -v ? \"\" : \"@c \";
777                     yesno = \$2;
778                     c2 = tolower(c);
779                     gsub(/_/, \"-\", c2);
780                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
781                 }
782             }
783         }"
784 }
785
786 print_enabled(){
787     suf=$1
788     shift
789     for v; do
790         enabled $v && printf "%s\n" ${v%$suf}
791     done
792 }
793
794 append(){
795     var=$1
796     shift
797     eval "$var=\"\$$var $*\""
798 }
799
800 prepend(){
801     var=$1
802     shift
803     eval "$var=\"$* \$$var\""
804 }
805
806 unique(){
807     var=$1
808     uniq_list=""
809     for tok in $(eval echo \$$var); do
810         uniq_list="$(filter_out $tok $uniq_list) $tok"
811     done
812     eval "$var=\"${uniq_list}\""
813 }
814
815 add_cppflags(){
816     append CPPFLAGS "$@"
817 }
818
819 add_cflags(){
820     append CFLAGS $($cflags_filter "$@")
821 }
822
823 add_cxxflags(){
824     append CXXFLAGS $($cflags_filter "$@")
825 }
826
827 add_asflags(){
828     append ASFLAGS $($asflags_filter "$@")
829 }
830
831 add_objcflags(){
832     append OBJCFLAGS $($objcflags_filter "$@")
833 }
834
835 add_ldflags(){
836     append LDFLAGS $($ldflags_filter "$@")
837 }
838
839 add_ldexeflags(){
840     append LDEXEFLAGS $($ldflags_filter "$@")
841 }
842
843 add_ldlibflags(){
844     append LDLIBFLAGS $($ldflags_filter "$@")
845 }
846
847 add_stripflags(){
848     append ASMSTRIPFLAGS "$@"
849 }
850
851 add_extralibs(){
852     prepend extralibs $($ldflags_filter "$@")
853 }
854
855 add_host_cppflags(){
856     append host_cppflags "$@"
857 }
858
859 add_host_cflags(){
860     append host_cflags $($host_cflags_filter "$@")
861 }
862
863 add_host_ldflags(){
864     append host_ldflags $($host_ldflags_filter "$@")
865 }
866
867 add_compat(){
868     append compat_objs $1
869     shift
870     map 'add_cppflags -D$v' "$@"
871 }
872
873 check_cmd(){
874     log "$@"
875     "$@" >> $logfile 2>&1
876 }
877
878 check_stat(){
879     log check_stat "$@"
880     stat "$1" >> $logfile 2>&1
881 }
882
883 cc_o(){
884     eval printf '%s\\n' $CC_O
885 }
886
887 cc_e(){
888     eval printf '%s\\n' $CC_E
889 }
890
891 check_cc(){
892     log check_cc "$@"
893     cat > $TMPC
894     log_file $TMPC
895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
896 }
897
898 check_cxx(){
899     log check_cxx "$@"
900     cat > $TMPCPP
901     log_file $TMPCPP
902     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
903 }
904
905 check_objcc(){
906     log check_objcc "$@"
907     cat > $TMPM
908     log_file $TMPM
909     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
910 }
911
912 check_cpp(){
913     log check_cpp "$@"
914     cat > $TMPC
915     log_file $TMPC
916     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
917 }
918
919 as_o(){
920     eval printf '%s\\n' $AS_O
921 }
922
923 check_as(){
924     log check_as "$@"
925     cat > $TMPS
926     log_file $TMPS
927     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
928 }
929
930 check_inline_asm(){
931     log check_inline_asm "$@"
932     name="$1"
933     code="$2"
934     shift 2
935     disable $name
936     check_cc "$@" <<EOF && enable $name
937 void foo(void){ __asm__ volatile($code); }
938 EOF
939 }
940
941 check_inline_asm_flags(){
942     log check_inline_asm_flags "$@"
943     name="$1"
944     code="$2"
945     flags=''
946     shift 2
947     while [ "$1" != "" ]; do
948       append flags $1
949       shift
950     done;
951     disable $name
952     cat > $TMPC <<EOF
953 void foo(void){ __asm__ volatile($code); }
954 EOF
955     log_file $TMPC
956     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
957     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
958 }
959
960 check_insn(){
961     log check_insn "$@"
962     check_inline_asm ${1}_inline "\"$2\""
963     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
964 }
965
966 check_yasm(){
967     log check_yasm "$@"
968     echo "$1" > $TMPS
969     log_file $TMPS
970     shift 1
971     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
972 }
973
974 ld_o(){
975     eval printf '%s\\n' $LD_O
976 }
977
978 check_ld(){
979     log check_ld "$@"
980     type=$1
981     shift 1
982     flags=$(filter_out '-l*|*.so' $@)
983     libs=$(filter '-l*|*.so' $@)
984     check_$type $($cflags_filter $flags) || return
985     flags=$($ldflags_filter $flags)
986     libs=$($ldflags_filter $libs)
987     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
988 }
989
990 print_include(){
991     hdr=$1
992     test "${hdr%.h}" = "${hdr}" &&
993         echo "#include $hdr"    ||
994         echo "#include <$hdr>"
995 }
996
997 check_code(){
998     log check_code "$@"
999     check=$1
1000     headers=$2
1001     code=$3
1002     shift 3
1003     {
1004         for hdr in $headers; do
1005             print_include $hdr
1006         done
1007         echo "int main(void) { $code; return 0; }"
1008     } | check_$check "$@"
1009 }
1010
1011 check_cppflags(){
1012     log check_cppflags "$@"
1013     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1014 int x;
1015 EOF
1016 }
1017
1018 test_cflags(){
1019     log test_cflags "$@"
1020     set -- $($cflags_filter "$@")
1021     check_cc "$@" <<EOF
1022 int x;
1023 EOF
1024 }
1025
1026 check_cflags(){
1027     log check_cflags "$@"
1028     test_cflags "$@" && add_cflags "$@"
1029 }
1030
1031 check_cxxflags(){
1032     log check_cxxflags "$@"
1033     set -- $($cflags_filter "$@")
1034     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1035 int x;
1036 EOF
1037 }
1038
1039 test_objcflags(){
1040     log test_cflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_objcc "$@" <<EOF
1043 int x;
1044 EOF
1045 }
1046
1047 check_objcflags(){
1048     log check_cflags "$@"
1049     test_objcflags "$@" && add_objcflags "$@"
1050 }
1051
1052 test_ldflags(){
1053     log test_ldflags "$@"
1054     check_ld "cc" "$@" <<EOF
1055 int main(void){ return 0; }
1056 EOF
1057 }
1058
1059 check_ldflags(){
1060     log check_ldflags "$@"
1061     test_ldflags "$@" && add_ldflags "$@"
1062 }
1063
1064 test_stripflags(){
1065     log test_stripflags "$@"
1066     # call check_cc to get a fresh TMPO
1067     check_cc <<EOF
1068 int main(void) { return 0; }
1069 EOF
1070     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1071 }
1072
1073 check_stripflags(){
1074     log check_stripflags "$@"
1075     test_stripflags "$@" && add_stripflags "$@"
1076 }
1077
1078 check_header(){
1079     log check_header "$@"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     check_cpp "$@" <<EOF && enable_safe $header
1084 #include <$header>
1085 int x;
1086 EOF
1087 }
1088
1089 check_header_objcc(){
1090     log check_header_objcc "$@"
1091     rm -f -- "$TMPO"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     {
1096        echo "#include <$header>"
1097        echo "int main(void) { return 0; }"
1098     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1099 }
1100
1101 check_func(){
1102     log check_func "$@"
1103     func=$1
1104     shift
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 extern int $func();
1108 int main(void){ $func(); }
1109 EOF
1110 }
1111
1112 check_complexfunc(){
1113     log check_complexfunc "$@"
1114     func=$1
1115     narg=$2
1116     shift 2
1117     test $narg = 2 && args="f, g" || args="f * I"
1118     disable $func
1119     check_ld "cc" "$@" <<EOF && enable $func
1120 #include <complex.h>
1121 #include <math.h>
1122 float foo(complex float f, complex float g) { return $func($args); }
1123 int main(void){ return (int) foo; }
1124 EOF
1125 }
1126
1127 check_mathfunc(){
1128     log check_mathfunc "$@"
1129     func=$1
1130     narg=$2
1131     shift 2
1132     test $narg = 2 && args="f, g" || args="f"
1133     disable $func
1134     check_ld "cc" "$@" <<EOF && enable $func
1135 #include <math.h>
1136 float foo(float f, float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_func_headers(){
1142     log check_func_headers "$@"
1143     headers=$1
1144     funcs=$2
1145     shift 2
1146     {
1147         for hdr in $headers; do
1148             print_include $hdr
1149         done
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1155 }
1156
1157 check_class_headers_cpp(){
1158     log check_class_headers_cpp "$@"
1159     headers=$1
1160     classes=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             echo "#include <$hdr>"
1165         done
1166         echo "int main(void) { "
1167         i=1
1168         for class in $classes; do
1169             echo "$class obj$i;"
1170             i=$(expr $i + 1)
1171         done
1172         echo "return 0; }"
1173     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1174 }
1175
1176 check_cpp_condition(){
1177     log check_cpp_condition "$@"
1178     header=$1
1179     condition=$2
1180     shift 2
1181     check_cpp "$@" <<EOF
1182 #include <$header>
1183 #if !($condition)
1184 #error "unsatisfied condition: $condition"
1185 #endif
1186 EOF
1187 }
1188
1189 check_lib(){
1190     log check_lib "$@"
1191     header="$1"
1192     func="$2"
1193     shift 2
1194     check_header $header && check_func $func "$@" && add_extralibs "$@"
1195 }
1196
1197 check_lib2(){
1198     log check_lib2 "$@"
1199     headers="$1"
1200     funcs="$2"
1201     shift 2
1202     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1203 }
1204
1205 check_lib_cpp(){
1206     log check_lib_cpp "$@"
1207     headers="$1"
1208     classes="$2"
1209     shift 2
1210     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1211 }
1212
1213 check_pkg_config(){
1214     log check_pkg_config "$@"
1215     pkgandversion="$1"
1216     pkg="${1%% *}"
1217     headers="$2"
1218     funcs="$3"
1219     shift 3
1220     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1221     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1222     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1223     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1224         set_safe "${pkg}_cflags" $pkg_cflags   &&
1225         set_safe "${pkg}_libs"   $pkg_libs
1226 }
1227
1228 check_exec(){
1229     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1230 }
1231
1232 check_exec_crash(){
1233     code=$(cat)
1234
1235     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1236     # are safe but may not be available everywhere.  Thus we use
1237     # raise(SIGTERM) instead.  The check is run in a subshell so we
1238     # can redirect the "Terminated" message from the shell.  SIGBUS
1239     # is not defined by standard C so it is used conditionally.
1240
1241     (check_exec "$@") >> $logfile 2>&1 <<EOF
1242 #include <signal.h>
1243 static void sighandler(int sig){
1244     raise(SIGTERM);
1245 }
1246 int foo(void){
1247     $code
1248 }
1249 int (*func_ptr)(void) = foo;
1250 int main(void){
1251     signal(SIGILL, sighandler);
1252     signal(SIGFPE, sighandler);
1253     signal(SIGSEGV, sighandler);
1254 #ifdef SIGBUS
1255     signal(SIGBUS, sighandler);
1256 #endif
1257     return func_ptr();
1258 }
1259 EOF
1260 }
1261
1262 check_type(){
1263     log check_type "$@"
1264     headers=$1
1265     type=$2
1266     shift 2
1267     disable_safe "$type"
1268     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1269 }
1270
1271 check_struct(){
1272     log check_struct "$@"
1273     headers=$1
1274     struct=$2
1275     member=$3
1276     shift 3
1277     disable_safe "${struct}_${member}"
1278     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1279         enable_safe "${struct}_${member}"
1280 }
1281
1282 check_builtin(){
1283     log check_builtin "$@"
1284     name=$1
1285     headers=$2
1286     builtin=$3
1287     shift 3
1288     disable "$name"
1289     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1290 }
1291
1292 check_compile_assert(){
1293     log check_compile_assert "$@"
1294     name=$1
1295     headers=$2
1296     condition=$3
1297     shift 3
1298     disable "$name"
1299     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1300 }
1301
1302 require(){
1303     name="$1"
1304     header="$2"
1305     func="$3"
1306     shift 3
1307     check_lib $header $func "$@" || die "ERROR: $name not found"
1308 }
1309
1310 require2(){
1311     name="$1"
1312     headers="$2"
1313     func="$3"
1314     shift 3
1315     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1316 }
1317
1318 require_cpp(){
1319     name="$1"
1320     headers="$2"
1321     classes="$3"
1322     shift 3
1323     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1324 }
1325
1326 use_pkg_config(){
1327     pkg="$1"
1328     check_pkg_config "$@" || return 1
1329     add_cflags    $(get_safe "${pkg}_cflags")
1330     add_extralibs $(get_safe "${pkg}_libs")
1331 }
1332
1333 require_pkg_config(){
1334     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1335 }
1336
1337 require_libfreetype(){
1338     log require_libfreetype "$@"
1339     pkg="freetype2"
1340     check_cmd $pkg_config --exists --print-errors $pkg \
1341       || die "ERROR: $pkg not found"
1342     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1343     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1344     {
1345         echo "#include <ft2build.h>"
1346         echo "#include FT_FREETYPE_H"
1347         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1348         echo "int main(void) { return 0; }"
1349     } | check_ld "cc" $pkg_cflags $pkg_libs \
1350       && set_safe "${pkg}_cflags" $pkg_cflags \
1351       && set_safe "${pkg}_libs"   $pkg_libs \
1352       || die "ERROR: $pkg not found"
1353     add_cflags    $(get_safe "${pkg}_cflags")
1354     add_extralibs $(get_safe "${pkg}_libs")
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1409     mkdir -p "$(dirname $2)"
1410     $cp_f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_reading_example
1451     avio_dir_cmd_example
1452     decoding_encoding_example
1453     demuxing_decoding_example
1454     extract_mvs_example
1455     filter_audio_example
1456     filtering_audio_example
1457     filtering_video_example
1458     metadata_example
1459     muxing_example
1460     qsvdec_example
1461     remuxing_example
1462     resampling_audio_example
1463     scaling_video_example
1464     transcode_aac_example
1465     transcoding_example
1466 "
1467
1468 EXTERNAL_LIBRARY_LIST="
1469     avisynth
1470     bzlib
1471     chromaprint
1472     crystalhd
1473     decklink
1474     frei0r
1475     gcrypt
1476     gmp
1477     gnutls
1478     iconv
1479     jni
1480     ladspa
1481     libass
1482     libbluray
1483     libbs2b
1484     libcaca
1485     libcdio
1486     libcelt
1487     libdc1394
1488     libebur128
1489     libfaac
1490     libfdk_aac
1491     libflite
1492     libfontconfig
1493     libfreetype
1494     libfribidi
1495     libgme
1496     libgsm
1497     libiec61883
1498     libilbc
1499     libkvazaar
1500     libmodplug
1501     libmp3lame
1502     libnut
1503     libopencore_amrnb
1504     libopencore_amrwb
1505     libopencv
1506     libopenh264
1507     libopenjpeg
1508     libopus
1509     libpulse
1510     librtmp
1511     librubberband
1512     libschroedinger
1513     libshine
1514     libsmbclient
1515     libsnappy
1516     libsoxr
1517     libspeex
1518     libssh
1519     libtesseract
1520     libtheora
1521     libtwolame
1522     libv4l2
1523     libvidstab
1524     libvo_amrwbenc
1525     libvorbis
1526     libvpx
1527     libwavpack
1528     libwebp
1529     libx264
1530     libx265
1531     libxavs
1532     libxcb
1533     libxcb_shm
1534     libxcb_shape
1535     libxcb_xfixes
1536     libxvid
1537     libzimg
1538     libzmq
1539     libzvbi
1540     lzma
1541     mediacodec
1542     netcdf
1543     openal
1544     opencl
1545     opengl
1546     openssl
1547     schannel
1548     sdl
1549     securetransport
1550     videotoolbox
1551     x11grab
1552     xlib
1553     zlib
1554 "
1555
1556 HWACCEL_LIBRARY_LIST="
1557     audiotoolbox
1558     cuda
1559     cuvid
1560     d3d11va
1561     dxva2
1562     libmfx
1563     libnpp
1564     mmal
1565     nvenc
1566     omx
1567     vaapi
1568     vda
1569     vdpau
1570     videotoolbox_hwaccel
1571     xvmc
1572 "
1573
1574 DOCUMENT_LIST="
1575     doc
1576     htmlpages
1577     manpages
1578     podpages
1579     txtpages
1580 "
1581
1582 FEATURE_LIST="
1583     ftrapv
1584     gray
1585     hardcoded_tables
1586     omx_rpi
1587     runtime_cpudetect
1588     safe_bitstream_reader
1589     shared
1590     small
1591     static
1592     swscale_alpha
1593 "
1594
1595 LIBRARY_LIST="
1596     avcodec
1597     avdevice
1598     avfilter
1599     avformat
1600     avresample
1601     avutil
1602     postproc
1603     swresample
1604     swscale
1605 "
1606
1607 LICENSE_LIST="
1608     gpl
1609     nonfree
1610     version3
1611 "
1612
1613 PROGRAM_LIST="
1614     ffplay
1615     ffprobe
1616     ffserver
1617     ffmpeg
1618 "
1619
1620 SUBSYSTEM_LIST="
1621     dct
1622     dwt
1623     error_resilience
1624     faan
1625     fast_unaligned
1626     fft
1627     lsp
1628     lzo
1629     mdct
1630     pixelutils
1631     network
1632     rdft
1633 "
1634
1635 CONFIG_LIST="
1636     $COMPONENT_LIST
1637     $DOCUMENT_LIST
1638     $EXAMPLE_LIST
1639     $EXTERNAL_LIBRARY_LIST
1640     $HWACCEL_LIBRARY_LIST
1641     $FEATURE_LIST
1642     $LICENSE_LIST
1643     $LIBRARY_LIST
1644     $PROGRAM_LIST
1645     $SUBSYSTEM_LIST
1646     fontconfig
1647     incompatible_libav_abi
1648     memalign_hack
1649     memory_poisoning
1650     neon_clobber_test
1651     pic
1652     pod2man
1653     raise_major
1654     thumb
1655     valgrind_backtrace
1656     xmm_clobber_test
1657 "
1658
1659 THREADS_LIST="
1660     pthreads
1661     os2threads
1662     w32threads
1663 "
1664
1665 ATOMICS_LIST="
1666     atomics_gcc
1667     atomics_suncc
1668     atomics_win32
1669 "
1670
1671 ARCH_LIST="
1672     aarch64
1673     alpha
1674     arm
1675     avr32
1676     avr32_ap
1677     avr32_uc
1678     bfin
1679     ia64
1680     m68k
1681     mips
1682     mips64
1683     parisc
1684     ppc
1685     ppc64
1686     s390
1687     sh4
1688     sparc
1689     sparc64
1690     tilegx
1691     tilepro
1692     tomi
1693     x86
1694     x86_32
1695     x86_64
1696 "
1697
1698 ARCH_EXT_LIST_ARM="
1699     armv5te
1700     armv6
1701     armv6t2
1702     armv8
1703     neon
1704     vfp
1705     vfpv3
1706     setend
1707 "
1708
1709 ARCH_EXT_LIST_MIPS="
1710     mipsfpu
1711     mips32r2
1712     mips32r5
1713     mips64r2
1714     mips32r6
1715     mips64r6
1716     mipsdsp
1717     mipsdspr2
1718     msa
1719 "
1720
1721 ARCH_EXT_LIST_LOONGSON="
1722     loongson2
1723     loongson3
1724     mmi
1725 "
1726
1727 ARCH_EXT_LIST_X86_SIMD="
1728     aesni
1729     amd3dnow
1730     amd3dnowext
1731     avx
1732     avx2
1733     fma3
1734     fma4
1735     mmx
1736     mmxext
1737     sse
1738     sse2
1739     sse3
1740     sse4
1741     sse42
1742     ssse3
1743     xop
1744 "
1745
1746 ARCH_EXT_LIST_PPC="
1747     altivec
1748     dcbzl
1749     ldbrx
1750     power8
1751     ppc4xx
1752     vsx
1753 "
1754
1755 ARCH_EXT_LIST_X86="
1756     $ARCH_EXT_LIST_X86_SIMD
1757     cpunop
1758     i686
1759 "
1760
1761 ARCH_EXT_LIST="
1762     $ARCH_EXT_LIST_ARM
1763     $ARCH_EXT_LIST_PPC
1764     $ARCH_EXT_LIST_X86
1765     $ARCH_EXT_LIST_MIPS
1766     $ARCH_EXT_LIST_LOONGSON
1767 "
1768
1769 ARCH_FEATURES="
1770     aligned_stack
1771     fast_64bit
1772     fast_clz
1773     fast_cmov
1774     local_aligned_8
1775     local_aligned_16
1776     local_aligned_32
1777     simd_align_16
1778 "
1779
1780 BUILTIN_LIST="
1781     atomic_cas_ptr
1782     atomic_compare_exchange
1783     machine_rw_barrier
1784     MemoryBarrier
1785     mm_empty
1786     rdtsc
1787     sarestart
1788     sem_timedwait
1789     sync_val_compare_and_swap
1790 "
1791 HAVE_LIST_CMDLINE="
1792     inline_asm
1793     symver
1794     yasm
1795 "
1796
1797 HAVE_LIST_PUB="
1798     bigendian
1799     fast_unaligned
1800     incompatible_libav_abi
1801 "
1802
1803 HEADERS_LIST="
1804     alsa_asoundlib_h
1805     altivec_h
1806     arpa_inet_h
1807     asm_types_h
1808     cdio_paranoia_h
1809     cdio_paranoia_paranoia_h
1810     dispatch_dispatch_h
1811     dev_bktr_ioctl_bt848_h
1812     dev_bktr_ioctl_meteor_h
1813     dev_ic_bt8xx_h
1814     dev_video_bktr_ioctl_bt848_h
1815     dev_video_meteor_ioctl_meteor_h
1816     direct_h
1817     dirent_h
1818     dlfcn_h
1819     d3d11_h
1820     dxva_h
1821     ES2_gl_h
1822     gsm_h
1823     io_h
1824     mach_mach_time_h
1825     machine_ioctl_bt848_h
1826     machine_ioctl_meteor_h
1827     malloc_h
1828     opencv2_core_core_c_h
1829     openjpeg_2_1_openjpeg_h
1830     openjpeg_2_0_openjpeg_h
1831     openjpeg_1_5_openjpeg_h
1832     OpenGL_gl3_h
1833     poll_h
1834     sndio_h
1835     soundcard_h
1836     sys_mman_h
1837     sys_param_h
1838     sys_resource_h
1839     sys_select_h
1840     sys_soundcard_h
1841     sys_time_h
1842     sys_un_h
1843     sys_videoio_h
1844     termios_h
1845     udplite_h
1846     unistd_h
1847     valgrind_valgrind_h
1848     windows_h
1849     winsock2_h
1850 "
1851
1852 INTRINSICS_LIST="
1853     intrinsics_neon
1854 "
1855
1856 COMPLEX_FUNCS="
1857     cabs
1858     cexp
1859 "
1860
1861 MATH_FUNCS="
1862     atanf
1863     atan2f
1864     cbrt
1865     cbrtf
1866     copysign
1867     cosf
1868     erf
1869     exp2
1870     exp2f
1871     expf
1872     hypot
1873     isfinite
1874     isinf
1875     isnan
1876     ldexpf
1877     llrint
1878     llrintf
1879     log2
1880     log2f
1881     log10f
1882     lrint
1883     lrintf
1884     powf
1885     rint
1886     round
1887     roundf
1888     sinf
1889     trunc
1890     truncf
1891 "
1892
1893 SYSTEM_FUNCS="
1894     access
1895     aligned_malloc
1896     arc4random
1897     clock_gettime
1898     closesocket
1899     CommandLineToArgvW
1900     CoTaskMemFree
1901     CryptGenRandom
1902     dlopen
1903     fcntl
1904     flt_lim
1905     fork
1906     getaddrinfo
1907     gethrtime
1908     getopt
1909     GetProcessAffinityMask
1910     GetProcessMemoryInfo
1911     GetProcessTimes
1912     getrusage
1913     GetSystemTimeAsFileTime
1914     gettimeofday
1915     glob
1916     glXGetProcAddress
1917     gmtime_r
1918     inet_aton
1919     isatty
1920     jack_port_get_latency_range
1921     kbhit
1922     localtime_r
1923     lstat
1924     lzo1x_999_compress
1925     mach_absolute_time
1926     MapViewOfFile
1927     memalign
1928     mkstemp
1929     mmap
1930     mprotect
1931     nanosleep
1932     PeekNamedPipe
1933     posix_memalign
1934     pthread_cancel
1935     sched_getaffinity
1936     SetConsoleTextAttribute
1937     SetConsoleCtrlHandler
1938     setmode
1939     setrlimit
1940     Sleep
1941     strerror_r
1942     sysconf
1943     sysctl
1944     usleep
1945     UTGetOSTypeFromString
1946     VirtualAlloc
1947     wglGetProcAddress
1948 "
1949
1950 TOOLCHAIN_FEATURES="
1951     as_dn_directive
1952     as_func
1953     as_object_arch
1954     asm_mod_q
1955     attribute_may_alias
1956     attribute_packed
1957     ebp_available
1958     ebx_available
1959     gnu_as
1960     gnu_windres
1961     ibm_asm
1962     inline_asm_direct_symbol_refs
1963     inline_asm_labels
1964     inline_asm_nonlocal_labels
1965     pragma_deprecated
1966     rsync_contimeout
1967     symver_asm_label
1968     symver_gnu_asm
1969     vfp_args
1970     xform_asm
1971     xmm_clobbers
1972 "
1973
1974 TYPES_LIST="
1975     CONDITION_VARIABLE_Ptr
1976     socklen_t
1977     struct_addrinfo
1978     struct_group_source_req
1979     struct_ip_mreq_source
1980     struct_ipv6_mreq
1981     struct_msghdr_msg_flags
1982     struct_pollfd
1983     struct_rusage_ru_maxrss
1984     struct_sctp_event_subscribe
1985     struct_sockaddr_in6
1986     struct_sockaddr_sa_len
1987     struct_sockaddr_storage
1988     struct_stat_st_mtim_tv_nsec
1989     struct_v4l2_frmivalenum_discrete
1990 "
1991
1992 HAVE_LIST="
1993     $ARCH_EXT_LIST
1994     $(add_suffix _external $ARCH_EXT_LIST)
1995     $(add_suffix _inline   $ARCH_EXT_LIST)
1996     $ARCH_FEATURES
1997     $ATOMICS_LIST
1998     $BUILTIN_LIST
1999     $COMPLEX_FUNCS
2000     $HAVE_LIST_CMDLINE
2001     $HAVE_LIST_PUB
2002     $HEADERS_LIST
2003     $INTRINSICS_LIST
2004     $MATH_FUNCS
2005     $SYSTEM_FUNCS
2006     $THREADS_LIST
2007     $TOOLCHAIN_FEATURES
2008     $TYPES_LIST
2009     atomics_native
2010     dos_paths
2011     dxva2_lib
2012     dxva2api_cobj
2013     libc_msvcrt
2014     libdc1394_1
2015     libdc1394_2
2016     makeinfo
2017     makeinfo_html
2018     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2019     perl
2020     pod2man
2021     sdl
2022     section_data_rel_ro
2023     texi2html
2024     threads
2025     vaapi_drm
2026     vaapi_x11
2027     vdpau_x11
2028     winrt
2029     xlib
2030 "
2031
2032 # options emitted with CONFIG_ prefix but not available on the command line
2033 CONFIG_EXTRA="
2034     aandcttables
2035     ac3dsp
2036     audio_frame_queue
2037     audiodsp
2038     blockdsp
2039     bswapdsp
2040     cabac
2041     dirac_parse
2042     dvprofile
2043     exif
2044     faandct
2045     faanidct
2046     fdctdsp
2047     flacdsp
2048     fmtconvert
2049     frame_thread_encoder
2050     g722dsp
2051     golomb
2052     gplv3
2053     h263dsp
2054     h264chroma
2055     h264dsp
2056     h264pred
2057     h264qpel
2058     hpeldsp
2059     huffman
2060     huffyuvdsp
2061     huffyuvencdsp
2062     idctdsp
2063     iirfilter
2064     imdct15
2065     intrax8
2066     iso_media
2067     ividsp
2068     jpegtables
2069     lgplv3
2070     libx262
2071     llauddsp
2072     llviddsp
2073     lpc
2074     lzf
2075     me_cmp
2076     mpeg_er
2077     mpegaudio
2078     mpegaudiodsp
2079     mpegvideo
2080     mpegvideoenc
2081     mss34dsp
2082     pixblockdsp
2083     qpeldsp
2084     qsv
2085     qsvdec
2086     qsvenc
2087     rangecoder
2088     riffdec
2089     riffenc
2090     rtpdec
2091     rtpenc_chain
2092     rv34dsp
2093     sinewin
2094     snappy
2095     srtp
2096     startcode
2097     texturedsp
2098     texturedspenc
2099     tpeldsp
2100     vaapi_encode
2101     vc1dsp
2102     videodsp
2103     vp3dsp
2104     vp56dsp
2105     vp8dsp
2106     vt_bt2020
2107     wma_freqs
2108     wmv2dsp
2109 "
2110
2111 CMDLINE_SELECT="
2112     $ARCH_EXT_LIST
2113     $CONFIG_LIST
2114     $HAVE_LIST_CMDLINE
2115     $THREADS_LIST
2116     asm
2117     cross_compile
2118     debug
2119     extra_warnings
2120     logging
2121     lto
2122     optimizations
2123     rpath
2124     stripping
2125 "
2126
2127 PATHS_LIST="
2128     bindir
2129     datadir
2130     docdir
2131     incdir
2132     libdir
2133     mandir
2134     pkgconfigdir
2135     prefix
2136     shlibdir
2137     install_name_dir
2138 "
2139
2140 CMDLINE_SET="
2141     $PATHS_LIST
2142     ar
2143     arch
2144     as
2145     assert_level
2146     build_suffix
2147     cc
2148     objcc
2149     cpu
2150     cross_prefix
2151     custom_allocator
2152     cxx
2153     dep_cc
2154     doxygen
2155     env
2156     extra_version
2157     gas
2158     host_cc
2159     host_cflags
2160     host_ld
2161     host_ldflags
2162     host_libs
2163     host_os
2164     install
2165     ld
2166     ln_s
2167     logfile
2168     malloc_prefix
2169     nm
2170     optflags
2171     pkg_config
2172     pkg_config_flags
2173     progs_suffix
2174     random_seed
2175     ranlib
2176     samples
2177     strip
2178     sws_max_filter_size
2179     sysinclude
2180     sysroot
2181     target_exec
2182     target_os
2183     target_path
2184     target_samples
2185     tempprefix
2186     toolchain
2187     valgrind
2188     yasmexe
2189 "
2190
2191 CMDLINE_APPEND="
2192     extra_cflags
2193     extra_cxxflags
2194     extra_objcflags
2195     host_cppflags
2196 "
2197
2198 # code dependency declarations
2199
2200 # architecture extensions
2201
2202 armv5te_deps="arm"
2203 armv6_deps="arm"
2204 armv6t2_deps="arm"
2205 armv8_deps="aarch64"
2206 neon_deps_any="aarch64 arm"
2207 intrinsics_neon_deps="neon"
2208 vfp_deps_any="aarch64 arm"
2209 vfpv3_deps="vfp"
2210 setend_deps="arm"
2211
2212 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2213
2214 mipsfpu_deps="mips"
2215 mipsdsp_deps="mips"
2216 mipsdspr2_deps="mips"
2217 mips32r2_deps="mips"
2218 mips32r5_deps="mips"
2219 mips32r6_deps="mips"
2220 mips64r2_deps="mips"
2221 mips64r6_deps="mips"
2222 msa_deps="mipsfpu"
2223 mmi_deps="mips"
2224
2225 altivec_deps="ppc"
2226 dcbzl_deps="ppc"
2227 ldbrx_deps="ppc"
2228 ppc4xx_deps="ppc"
2229 vsx_deps="altivec"
2230 power8_deps="vsx"
2231
2232 cpunop_deps="i686"
2233 x86_64_select="i686"
2234 x86_64_suggest="fast_cmov"
2235
2236 amd3dnow_deps="mmx"
2237 amd3dnowext_deps="amd3dnow"
2238 i686_deps="x86"
2239 mmx_deps="x86"
2240 mmxext_deps="mmx"
2241 sse_deps="mmxext"
2242 sse2_deps="sse"
2243 sse3_deps="sse2"
2244 ssse3_deps="sse3"
2245 sse4_deps="ssse3"
2246 sse42_deps="sse4"
2247 aesni_deps="sse42"
2248 avx_deps="sse42"
2249 xop_deps="avx"
2250 fma3_deps="avx"
2251 fma4_deps="avx"
2252 avx2_deps="avx"
2253
2254 mmx_external_deps="yasm"
2255 mmx_inline_deps="inline_asm"
2256 mmx_suggest="mmx_external mmx_inline"
2257
2258 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2259     eval dep=\$${ext}_deps
2260     eval ${ext}_external_deps='"${dep}_external"'
2261     eval ${ext}_inline_deps='"${dep}_inline"'
2262     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2263 done
2264
2265 aligned_stack_if_any="aarch64 ppc x86"
2266 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2267 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2268 fast_unaligned_if_any="aarch64 ppc x86"
2269 simd_align_16_if_any="altivec neon sse"
2270
2271 # system capabilities
2272 symver_if_any="symver_asm_label symver_gnu_asm"
2273 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2274
2275 # threading support
2276 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2277 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2278 atomics_win32_if="MemoryBarrier"
2279 atomics_native_if_any="$ATOMICS_LIST"
2280 w32threads_deps="atomics_native"
2281 threads_if_any="$THREADS_LIST"
2282
2283 # subsystems
2284 dct_select="rdft"
2285 dirac_parse_select="golomb"
2286 error_resilience_select="me_cmp"
2287 faandct_deps="faan fdctdsp"
2288 faanidct_deps="faan idctdsp"
2289 h264dsp_select="startcode"
2290 frame_thread_encoder_deps="encoders threads"
2291 intrax8_select="blockdsp idctdsp"
2292 mdct_select="fft"
2293 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2294 mpeg_er_select="error_resilience"
2295 mpegaudio_select="mpegaudiodsp"
2296 mpegaudiodsp_select="dct"
2297 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2298 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2299 vc1dsp_select="h264chroma qpeldsp startcode"
2300 rdft_select="fft"
2301
2302 # decoders / encoders
2303 aac_decoder_select="imdct15 mdct sinewin"
2304 aac_fixed_decoder_select="mdct sinewin"
2305 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2306 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2307 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2308 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2309 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2310 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2311 adpcm_g722_decoder_select="g722dsp"
2312 adpcm_g722_encoder_select="g722dsp"
2313 aic_decoder_select="golomb idctdsp"
2314 alac_encoder_select="lpc"
2315 als_decoder_select="bswapdsp"
2316 amrnb_decoder_select="lsp"
2317 amrwb_decoder_select="lsp"
2318 amv_decoder_select="sp5x_decoder exif"
2319 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2320 ape_decoder_select="bswapdsp llauddsp"
2321 apng_decoder_select="zlib"
2322 apng_encoder_select="huffyuvencdsp zlib"
2323 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2324 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2325 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2326 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2327 atrac1_decoder_select="mdct sinewin"
2328 atrac3_decoder_select="mdct"
2329 atrac3p_decoder_select="mdct sinewin"
2330 avrn_decoder_select="exif jpegtables"
2331 bink_decoder_select="blockdsp hpeldsp"
2332 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2333 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2334 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2335 cllc_decoder_select="bswapdsp"
2336 comfortnoise_encoder_select="lpc"
2337 cook_decoder_select="audiodsp mdct sinewin"
2338 cscd_decoder_select="lzo"
2339 cscd_decoder_suggest="zlib"
2340 dca_decoder_select="mdct"
2341 dds_decoder_select="texturedsp"
2342 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2343 dnxhd_decoder_select="blockdsp idctdsp"
2344 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2345 dvvideo_decoder_select="dvprofile idctdsp"
2346 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2347 dxa_decoder_select="zlib"
2348 dxv_decoder_select="lzf texturedsp"
2349 eac3_decoder_select="ac3_decoder"
2350 eac3_encoder_select="ac3_encoder"
2351 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2352 eatgq_decoder_select="aandcttables"
2353 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2354 exr_decoder_select="zlib"
2355 ffv1_decoder_select="golomb rangecoder"
2356 ffv1_encoder_select="rangecoder"
2357 ffvhuff_decoder_select="huffyuv_decoder"
2358 ffvhuff_encoder_select="huffyuv_encoder"
2359 fic_decoder_select="golomb"
2360 flac_decoder_select="flacdsp golomb"
2361 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2362 flashsv2_decoder_select="zlib"
2363 flashsv2_encoder_select="zlib"
2364 flashsv_decoder_select="zlib"
2365 flashsv_encoder_select="zlib"
2366 flv_decoder_select="h263_decoder"
2367 flv_encoder_select="h263_encoder"
2368 fourxm_decoder_select="blockdsp bswapdsp"
2369 fraps_decoder_select="bswapdsp huffman"
2370 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2371 g729_decoder_select="audiodsp"
2372 h261_decoder_select="mpegvideo"
2373 h261_encoder_select="aandcttables mpegvideoenc"
2374 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2375 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2376 h263i_decoder_select="h263_decoder"
2377 h263p_decoder_select="h263_decoder"
2378 h263p_encoder_select="h263_encoder"
2379 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2380 h264_decoder_suggest="error_resilience"
2381 hap_decoder_select="snappy texturedsp"
2382 hap_encoder_deps="libsnappy"
2383 hap_encoder_select="texturedspenc"
2384 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2385 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2386 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2387 iac_decoder_select="imc_decoder"
2388 imc_decoder_select="bswapdsp fft mdct sinewin"
2389 indeo3_decoder_select="hpeldsp"
2390 indeo4_decoder_select="ividsp"
2391 indeo5_decoder_select="ividsp"
2392 interplay_video_decoder_select="hpeldsp"
2393 jpegls_decoder_select="golomb mjpeg_decoder"
2394 jpegls_encoder_select="golomb"
2395 jv_decoder_select="blockdsp"
2396 lagarith_decoder_select="huffyuvdsp"
2397 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2398 loco_decoder_select="golomb"
2399 magicyuv_decoder_select="huffyuvdsp"
2400 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2401 metasound_decoder_select="lsp mdct sinewin"
2402 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2403 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2404 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2405 mjpegb_decoder_select="mjpeg_decoder"
2406 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2407 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2408 mlp_decoder_select="mlp_parser"
2409 motionpixels_decoder_select="bswapdsp"
2410 mp1_decoder_select="mpegaudio"
2411 mp1float_decoder_select="mpegaudio"
2412 mp2_decoder_select="mpegaudio"
2413 mp2float_decoder_select="mpegaudio"
2414 mp3_decoder_select="mpegaudio"
2415 mp3adu_decoder_select="mpegaudio"
2416 mp3adufloat_decoder_select="mpegaudio"
2417 mp3float_decoder_select="mpegaudio"
2418 mp3on4_decoder_select="mpegaudio"
2419 mp3on4float_decoder_select="mpegaudio"
2420 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2421 mpc8_decoder_select="mpegaudiodsp"
2422 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2423 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2424 mpegvideo_decoder_select="mpegvideo"
2425 mpeg1video_decoder_select="mpegvideo"
2426 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2427 mpeg2video_decoder_select="mpegvideo"
2428 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2429 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2430 mpeg4_encoder_select="h263_encoder"
2431 msa1_decoder_select="mss34dsp"
2432 msmpeg4v1_decoder_select="h263_decoder"
2433 msmpeg4v2_decoder_select="h263_decoder"
2434 msmpeg4v2_encoder_select="h263_encoder"
2435 msmpeg4v3_decoder_select="h263_decoder"
2436 msmpeg4v3_encoder_select="h263_encoder"
2437 mss2_decoder_select="vc1_decoder mpegvideo"
2438 mts2_decoder_select="mss34dsp"
2439 mxpeg_decoder_select="mjpeg_decoder"
2440 nellymoser_decoder_select="mdct sinewin"
2441 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2442 nuv_decoder_select="idctdsp lzo"
2443 on2avc_decoder_select="mdct"
2444 opus_decoder_deps="swresample"
2445 opus_decoder_select="imdct15"
2446 png_decoder_select="zlib"
2447 png_encoder_select="huffyuvencdsp zlib"
2448 prores_decoder_select="blockdsp idctdsp"
2449 prores_encoder_select="fdctdsp"
2450 qcelp_decoder_select="lsp"
2451 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2452 ra_144_decoder_select="audiodsp"
2453 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2454 ralf_decoder_select="golomb"
2455 rawvideo_decoder_select="bswapdsp"
2456 rscc_decoder_select="zlib"
2457 rtjpeg_decoder_select="me_cmp"
2458 rv10_decoder_select="h263_decoder"
2459 rv10_encoder_select="h263_encoder"
2460 rv20_decoder_select="h263_decoder"
2461 rv20_encoder_select="h263_encoder"
2462 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2463 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2464 screenpresso_decoder_select="zlib"
2465 shorten_decoder_select="golomb"
2466 sipr_decoder_select="lsp"
2467 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2468 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2469 sonic_decoder_select="golomb rangecoder"
2470 sonic_encoder_select="golomb rangecoder"
2471 sonic_ls_encoder_select="golomb rangecoder"
2472 sp5x_decoder_select="mjpeg_decoder"
2473 svq1_decoder_select="hpeldsp"
2474 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2475 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2476 svq3_decoder_suggest="zlib"
2477 tak_decoder_select="audiodsp"
2478 tdsc_decoder_select="zlib mjpeg_decoder"
2479 theora_decoder_select="vp3_decoder"
2480 thp_decoder_select="mjpeg_decoder"
2481 tiff_decoder_suggest="zlib lzma"
2482 tiff_encoder_suggest="zlib"
2483 truehd_decoder_select="mlp_parser"
2484 truemotion2_decoder_select="bswapdsp"
2485 truespeech_decoder_select="bswapdsp"
2486 tscc_decoder_select="zlib"
2487 twinvq_decoder_select="mdct lsp sinewin"
2488 txd_decoder_select="texturedsp"
2489 utvideo_decoder_select="bswapdsp"
2490 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2491 vble_decoder_select="huffyuvdsp"
2492 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2493 vc1_qsv_decoder_deps="libmfx"
2494 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2495 vc1image_decoder_select="vc1_decoder"
2496 vorbis_decoder_select="mdct"
2497 vorbis_encoder_select="mdct"
2498 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2499 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2500 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2501 vp6a_decoder_select="vp6_decoder"
2502 vp6f_decoder_select="vp6_decoder"
2503 vp7_decoder_select="h264pred videodsp vp8dsp"
2504 vp8_decoder_select="h264pred videodsp vp8dsp"
2505 vp9_decoder_select="videodsp vp9_parser"
2506 webp_decoder_select="vp8_decoder exif"
2507 wmalossless_decoder_select="llauddsp"
2508 wmapro_decoder_select="mdct sinewin wma_freqs"
2509 wmav1_decoder_select="mdct sinewin wma_freqs"
2510 wmav1_encoder_select="mdct sinewin wma_freqs"
2511 wmav2_decoder_select="mdct sinewin wma_freqs"
2512 wmav2_encoder_select="mdct sinewin wma_freqs"
2513 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2514 wmv1_decoder_select="h263_decoder"
2515 wmv1_encoder_select="h263_encoder"
2516 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2517 wmv2_encoder_select="h263_encoder wmv2dsp"
2518 wmv3_decoder_select="vc1_decoder"
2519 wmv3image_decoder_select="wmv3_decoder"
2520 xma1_decoder_select="wmapro_decoder"
2521 xma2_decoder_select="wmapro_decoder"
2522 zerocodec_decoder_select="zlib"
2523 zlib_decoder_select="zlib"
2524 zlib_encoder_select="zlib"
2525 zmbv_decoder_select="zlib"
2526 zmbv_encoder_select="zlib"
2527
2528 # platform codecs
2529 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2530 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2531
2532 # hardware accelerators
2533 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2534 cuvid_deps="cuda"
2535 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2536 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2537 vaapi_deps="va_va_h"
2538 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2539 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2540 vda_deps="vda_framework pthreads"
2541 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2542 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2543 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2544 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2545 xvmc_deps="X11_extensions_XvMClib_h"
2546
2547 h263_vaapi_hwaccel_deps="vaapi"
2548 h263_vaapi_hwaccel_select="h263_decoder"
2549 h263_videotoolbox_hwaccel_deps="videotoolbox"
2550 h263_videotoolbox_hwaccel_select="h263_decoder"
2551 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2552 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2553 h264_d3d11va_hwaccel_deps="d3d11va"
2554 h264_d3d11va_hwaccel_select="h264_decoder"
2555 h264_dxva2_hwaccel_deps="dxva2"
2556 h264_dxva2_hwaccel_select="h264_decoder"
2557 h264_mediacodec_decoder_deps="mediacodec"
2558 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2559 h264_mmal_decoder_deps="mmal"
2560 h264_mmal_decoder_select="mmal"
2561 h264_mmal_hwaccel_deps="mmal"
2562 h264_omx_encoder_deps="omx"
2563 h264_qsv_hwaccel_deps="libmfx"
2564 h264_vaapi_hwaccel_deps="vaapi"
2565 h264_vaapi_hwaccel_select="h264_decoder"
2566 h264_vda_decoder_deps="vda"
2567 h264_vda_decoder_select="h264_decoder"
2568 h264_vda_hwaccel_deps="vda"
2569 h264_vda_hwaccel_select="h264_decoder"
2570 h264_vda_old_hwaccel_deps="vda"
2571 h264_vda_old_hwaccel_select="h264_decoder"
2572 h264_vdpau_decoder_deps="vdpau"
2573 h264_vdpau_decoder_select="h264_decoder"
2574 h264_vdpau_hwaccel_deps="vdpau"
2575 h264_vdpau_hwaccel_select="h264_decoder"
2576 h264_videotoolbox_hwaccel_deps="videotoolbox"
2577 h264_videotoolbox_hwaccel_select="h264_decoder"
2578 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2579 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2580 hevc_d3d11va_hwaccel_select="hevc_decoder"
2581 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2582 hevc_dxva2_hwaccel_select="hevc_decoder"
2583 hevc_qsv_hwaccel_deps="libmfx"
2584 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2585 hevc_vaapi_hwaccel_select="hevc_decoder"
2586 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2587 hevc_vdpau_hwaccel_select="hevc_decoder"
2588 mpeg_vdpau_decoder_deps="vdpau"
2589 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2590 mpeg_xvmc_hwaccel_deps="xvmc"
2591 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2592 mpeg1_vdpau_decoder_deps="vdpau"
2593 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2594 mpeg1_vdpau_hwaccel_deps="vdpau"
2595 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2596 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2597 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2598 mpeg1_xvmc_hwaccel_deps="xvmc"
2599 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2600 mpeg2_crystalhd_decoder_select="crystalhd"
2601 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2602 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2603 mpeg2_dxva2_hwaccel_deps="dxva2"
2604 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2605 mpeg2_mmal_decoder_deps="mmal"
2606 mpeg2_mmal_decoder_select="mmal"
2607 mpeg2_mmal_hwaccel_deps="mmal"
2608 mpeg2_qsv_hwaccel_deps="libmfx"
2609 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2610 mpeg2_vaapi_hwaccel_deps="vaapi"
2611 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2612 mpeg2_vdpau_hwaccel_deps="vdpau"
2613 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2614 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2615 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_xvmc_hwaccel_deps="xvmc"
2617 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2618 mpeg4_crystalhd_decoder_select="crystalhd"
2619 mpeg4_mmal_decoder_deps="mmal"
2620 mpeg4_mmal_decoder_select="mmal"
2621 mpeg4_mmal_hwaccel_deps="mmal"
2622 mpeg4_omx_encoder_deps="omx"
2623 mpeg4_vaapi_hwaccel_deps="vaapi"
2624 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2625 mpeg4_vdpau_decoder_deps="vdpau"
2626 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2627 mpeg4_vdpau_hwaccel_deps="vdpau"
2628 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2629 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2630 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2631 msmpeg4_crystalhd_decoder_select="crystalhd"
2632 vc1_crystalhd_decoder_select="crystalhd"
2633 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2634 vc1_d3d11va_hwaccel_deps="d3d11va"
2635 vc1_d3d11va_hwaccel_select="vc1_decoder"
2636 vc1_dxva2_hwaccel_deps="dxva2"
2637 vc1_dxva2_hwaccel_select="vc1_decoder"
2638 vc1_mmal_decoder_deps="mmal"
2639 vc1_mmal_decoder_select="mmal"
2640 vc1_mmal_hwaccel_deps="mmal"
2641 vc1_qsv_hwaccel_deps="libmfx"
2642 vc1_qsv_hwaccel_select="qsvdec_vc1"
2643 vc1_vaapi_hwaccel_deps="vaapi"
2644 vc1_vaapi_hwaccel_select="vc1_decoder"
2645 vc1_vdpau_decoder_deps="vdpau"
2646 vc1_vdpau_decoder_select="vc1_decoder"
2647 vc1_vdpau_hwaccel_deps="vdpau"
2648 vc1_vdpau_hwaccel_select="vc1_decoder"
2649 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2650 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2651 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2652 vp9_d3d11va_hwaccel_select="vp9_decoder"
2653 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2654 vp9_dxva2_hwaccel_select="vp9_decoder"
2655 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2656 vp9_vaapi_hwaccel_select="vp9_decoder"
2657 wmv3_crystalhd_decoder_select="crystalhd"
2658 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2659 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2660 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2661 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2662 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2663
2664 # hardware-accelerated codecs
2665 omx_deps="dlopen pthreads"
2666 omx_extralibs='$ldl'
2667 qsvdec_select="qsv"
2668 qsvenc_select="qsv"
2669 vaapi_encode_deps="vaapi"
2670
2671 hwupload_cuda_filter_deps="cuda"
2672 scale_npp_filter_deps="cuda libnpp"
2673
2674 nvenc_encoder_deps="nvenc"
2675 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2676 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2677 h264_qsv_decoder_deps="libmfx"
2678 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2679 h264_qsv_encoder_deps="libmfx"
2680 h264_qsv_encoder_select="qsvenc"
2681 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2682 h264_vaapi_encoder_select="vaapi_encode golomb"
2683
2684 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2685 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2686 hevc_qsv_decoder_deps="libmfx"
2687 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2688 hevc_qsv_encoder_deps="libmfx"
2689 hevc_qsv_encoder_select="qsvenc"
2690 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2691 hevc_vaapi_encoder_select="vaapi_encode golomb"
2692 mpeg2_qsv_decoder_deps="libmfx"
2693 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2694 mpeg2_qsv_encoder_deps="libmfx"
2695 mpeg2_qsv_encoder_select="qsvenc"
2696 nvenc_h264_encoder_deps="nvenc"
2697 nvenc_hevc_encoder_deps="nvenc"
2698
2699 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2700 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2701 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2702 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2703 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2704 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2705
2706 # parsers
2707 h264_parser_select="golomb h264dsp"
2708 hevc_parser_select="golomb"
2709 mpegvideo_parser_select="mpegvideo"
2710 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2711 vc1_parser_select="vc1dsp"
2712
2713 # bitstream_filters
2714 mjpeg2jpeg_bsf_select="jpegtables"
2715
2716 # external libraries
2717 aac_at_decoder_deps="audiotoolbox"
2718 ac3_at_decoder_deps="audiotoolbox"
2719 ac3_at_decoder_select="ac3_parser"
2720 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2721 alac_at_decoder_deps="audiotoolbox"
2722 amr_nb_at_decoder_deps="audiotoolbox"
2723 eac3_at_decoder_deps="audiotoolbox"
2724 eac3_at_decoder_select="ac3_parser"
2725 gsm_ms_at_decoder_deps="audiotoolbox"
2726 ilbc_at_decoder_deps="audiotoolbox"
2727 mp1_at_decoder_deps="audiotoolbox"
2728 mp2_at_decoder_deps="audiotoolbox"
2729 mp3_at_decoder_deps="audiotoolbox"
2730 pcm_alaw_at_decoder_deps="audiotoolbox"
2731 pcm_mulaw_at_decoder_deps="audiotoolbox"
2732 qdmc_at_decoder_deps="audiotoolbox"
2733 qdm2_at_decoder_deps="audiotoolbox"
2734 aac_at_encoder_deps="audiotoolbox"
2735 aac_at_encoder_select="audio_frame_queue"
2736 alac_at_encoder_deps="audiotoolbox"
2737 alac_at_encoder_select="audio_frame_queue"
2738 ilbc_at_encoder_deps="audiotoolbox"
2739 ilbc_at_encoder_select="audio_frame_queue"
2740 pcm_alaw_at_encoder_deps="audiotoolbox"
2741 pcm_alaw_at_encoder_select="audio_frame_queue"
2742 pcm_mulaw_at_encoder_deps="audiotoolbox"
2743 pcm_mulaw_at_encoder_select="audio_frame_queue"
2744 chromaprint_muxer_deps="chromaprint"
2745 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2746 libcelt_decoder_deps="libcelt"
2747 libfaac_encoder_deps="libfaac"
2748 libfaac_encoder_select="audio_frame_queue"
2749 libfdk_aac_decoder_deps="libfdk_aac"
2750 libfdk_aac_encoder_deps="libfdk_aac"
2751 libfdk_aac_encoder_select="audio_frame_queue"
2752 libgme_demuxer_deps="libgme"
2753 libgsm_decoder_deps="libgsm"
2754 libgsm_encoder_deps="libgsm"
2755 libgsm_ms_decoder_deps="libgsm"
2756 libgsm_ms_encoder_deps="libgsm"
2757 libilbc_decoder_deps="libilbc"
2758 libilbc_encoder_deps="libilbc"
2759 libkvazaar_encoder_deps="libkvazaar"
2760 libmodplug_demuxer_deps="libmodplug"
2761 libmp3lame_encoder_deps="libmp3lame"
2762 libmp3lame_encoder_select="audio_frame_queue"
2763 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2764 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2765 libopencore_amrnb_encoder_select="audio_frame_queue"
2766 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2767 libopenh264_encoder_deps="libopenh264"
2768 libopenjpeg_decoder_deps="libopenjpeg"
2769 libopenjpeg_encoder_deps="libopenjpeg"
2770 libopus_decoder_deps="libopus"
2771 libopus_encoder_deps="libopus"
2772 libopus_encoder_select="audio_frame_queue"
2773 libschroedinger_decoder_deps="libschroedinger"
2774 libschroedinger_encoder_deps="libschroedinger"
2775 libshine_encoder_deps="libshine"
2776 libshine_encoder_select="audio_frame_queue"
2777 libspeex_decoder_deps="libspeex"
2778 libspeex_encoder_deps="libspeex"
2779 libspeex_encoder_select="audio_frame_queue"
2780 libtheora_encoder_deps="libtheora"
2781 libtwolame_encoder_deps="libtwolame"
2782 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2783 libvorbis_decoder_deps="libvorbis"
2784 libvorbis_encoder_deps="libvorbis"
2785 libvorbis_encoder_select="audio_frame_queue"
2786 libvpx_vp8_decoder_deps="libvpx"
2787 libvpx_vp8_encoder_deps="libvpx"
2788 libvpx_vp9_decoder_deps="libvpx"
2789 libvpx_vp9_encoder_deps="libvpx"
2790 libwavpack_encoder_deps="libwavpack"
2791 libwebp_encoder_deps="libwebp"
2792 libwebp_anim_encoder_deps="libwebp"
2793 libx262_encoder_deps="libx262"
2794 libx264_encoder_deps="libx264"
2795 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2796 libx264rgb_encoder_select="libx264_encoder"
2797 libx265_encoder_deps="libx265"
2798 libxavs_encoder_deps="libxavs"
2799 libxvid_encoder_deps="libxvid"
2800 libzvbi_teletext_decoder_deps="libzvbi"
2801 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2802 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2803 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2804 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2805 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2806
2807 # demuxers / muxers
2808 ac3_demuxer_select="ac3_parser"
2809 asf_demuxer_select="riffdec"
2810 asf_o_demuxer_select="riffdec"
2811 asf_muxer_select="riffenc"
2812 asf_stream_muxer_select="asf_muxer"
2813 avi_demuxer_select="iso_media riffdec exif"
2814 avi_muxer_select="riffenc"
2815 avisynth_demuxer_deps="avisynth"
2816 avisynth_demuxer_select="riffdec"
2817 caf_demuxer_select="iso_media riffdec"
2818 dash_muxer_select="mp4_muxer"
2819 dirac_demuxer_select="dirac_parser"
2820 dts_demuxer_select="dca_parser"
2821 dtshd_demuxer_select="dca_parser"
2822 dv_demuxer_select="dvprofile"
2823 dv_muxer_select="dvprofile"
2824 dxa_demuxer_select="riffdec"
2825 eac3_demuxer_select="ac3_parser"
2826 f4v_muxer_select="mov_muxer"
2827 flac_demuxer_select="flac_parser"
2828 hds_muxer_select="flv_muxer"
2829 hls_muxer_select="mpegts_muxer"
2830 image2_alias_pix_demuxer_select="image2_demuxer"
2831 image2_brender_pix_demuxer_select="image2_demuxer"
2832 ipod_muxer_select="mov_muxer"
2833 ismv_muxer_select="mov_muxer"
2834 libnut_demuxer_deps="libnut"
2835 libnut_muxer_deps="libnut"
2836 matroska_audio_muxer_select="matroska_muxer"
2837 matroska_demuxer_select="iso_media riffdec"
2838 matroska_demuxer_suggest="bzlib lzo zlib"
2839 matroska_muxer_select="iso_media riffenc"
2840 mmf_muxer_select="riffenc"
2841 mov_demuxer_select="iso_media riffdec"
2842 mov_demuxer_suggest="zlib"
2843 mov_muxer_select="iso_media riffenc rtpenc_chain"
2844 mp3_demuxer_select="mpegaudio_parser"
2845 mp4_muxer_select="mov_muxer"
2846 mpegts_demuxer_select="iso_media"
2847 mpegts_muxer_select="adts_muxer latm_muxer"
2848 mpegtsraw_demuxer_select="mpegts_demuxer"
2849 mxf_d10_muxer_select="mxf_muxer"
2850 mxf_opatom_muxer_select="mxf_muxer"
2851 nut_muxer_select="riffenc"
2852 nuv_demuxer_select="riffdec"
2853 oga_muxer_select="ogg_muxer"
2854 ogg_demuxer_select="dirac_parse"
2855 opus_muxer_select="ogg_muxer"
2856 psp_muxer_select="mov_muxer"
2857 rtp_demuxer_select="sdp_demuxer"
2858 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2859 rtsp_demuxer_select="http_protocol rtpdec"
2860 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2861 sap_demuxer_select="sdp_demuxer"
2862 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2863 sdp_demuxer_select="rtpdec"
2864 smoothstreaming_muxer_select="ismv_muxer"
2865 spdif_muxer_select="aac_parser"
2866 spx_muxer_select="ogg_muxer"
2867 swf_demuxer_suggest="zlib"
2868 tak_demuxer_select="tak_parser"
2869 tg2_muxer_select="mov_muxer"
2870 tgp_muxer_select="mov_muxer"
2871 vobsub_demuxer_select="mpegps_demuxer"
2872 w64_demuxer_select="wav_demuxer"
2873 w64_muxer_select="wav_muxer"
2874 wav_demuxer_select="riffdec"
2875 wav_muxer_select="riffenc"
2876 webm_muxer_select="iso_media riffenc"
2877 webm_dash_manifest_demuxer_select="matroska_demuxer"
2878 wtv_demuxer_select="mpegts_demuxer riffdec"
2879 wtv_muxer_select="mpegts_muxer riffenc"
2880 xmv_demuxer_select="riffdec"
2881 xwma_demuxer_select="riffdec"
2882
2883 # indevs / outdevs
2884 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2885 alsa_outdev_deps="alsa_asoundlib_h"
2886 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2887 avfoundation_indev_select="avfoundation"
2888 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2889 caca_outdev_deps="libcaca"
2890 decklink_indev_deps="decklink pthreads"
2891 decklink_indev_extralibs="-lstdc++"
2892 decklink_outdev_deps="decklink pthreads"
2893 decklink_outdev_extralibs="-lstdc++"
2894 dshow_indev_deps="IBaseFilter"
2895 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2896 dv1394_indev_deps="dv1394"
2897 dv1394_indev_select="dv_demuxer"
2898 fbdev_indev_deps="linux_fb_h"
2899 fbdev_outdev_deps="linux_fb_h"
2900 gdigrab_indev_deps="CreateDIBSection"
2901 gdigrab_indev_extralibs="-lgdi32"
2902 gdigrab_indev_select="bmp_decoder"
2903 iec61883_indev_deps="libiec61883"
2904 jack_indev_deps="jack_jack_h"
2905 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2906 lavfi_indev_deps="avfilter"
2907 libcdio_indev_deps="libcdio"
2908 libdc1394_indev_deps="libdc1394"
2909 libv4l2_indev_deps="libv4l2"
2910 openal_indev_deps="openal"
2911 opengl_outdev_deps="opengl"
2912 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2913 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2914 pulse_indev_deps="libpulse"
2915 pulse_outdev_deps="libpulse"
2916 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2917 qtkit_indev_select="qtkit"
2918 sdl_outdev_deps="sdl"
2919 sndio_indev_deps="sndio_h"
2920 sndio_outdev_deps="sndio_h"
2921 v4l_indev_deps="linux_videodev_h"
2922 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2923 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2924 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2925 vfwcap_indev_extralibs="-lavicap32"
2926 x11grab_indev_deps="x11grab"
2927 x11grab_xcb_indev_deps="libxcb"
2928 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2929 xv_outdev_extralibs="-lXv -lX11 -lXext"
2930
2931 # protocols
2932 async_protocol_deps="threads"
2933 bluray_protocol_deps="libbluray"
2934 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2935 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2936 ffrtmpcrypt_protocol_select="tcp_protocol"
2937 ffrtmphttp_protocol_deps="!librtmp_protocol"
2938 ffrtmphttp_protocol_select="http_protocol"
2939 ftp_protocol_select="tcp_protocol"
2940 gopher_protocol_select="network"
2941 http_protocol_select="tcp_protocol"
2942 httpproxy_protocol_select="tcp_protocol"
2943 https_protocol_select="tls_protocol"
2944 icecast_protocol_select="http_protocol"
2945 librtmp_protocol_deps="librtmp"
2946 librtmpe_protocol_deps="librtmp"
2947 librtmps_protocol_deps="librtmp"
2948 librtmpt_protocol_deps="librtmp"
2949 librtmpte_protocol_deps="librtmp"
2950 libsmbclient_protocol_deps="libsmbclient gplv3"
2951 libssh_protocol_deps="libssh"
2952 mmsh_protocol_select="http_protocol"
2953 mmst_protocol_select="network"
2954 rtmp_protocol_deps="!librtmp_protocol"
2955 rtmp_protocol_select="tcp_protocol"
2956 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2957 rtmps_protocol_deps="!librtmp_protocol"
2958 rtmps_protocol_select="tls_protocol"
2959 rtmpt_protocol_select="ffrtmphttp_protocol"
2960 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2961 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2962 rtp_protocol_select="udp_protocol"
2963 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2964 sctp_protocol_select="network"
2965 srtp_protocol_select="rtp_protocol srtp"
2966 tcp_protocol_select="network"
2967 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2968 tls_gnutls_protocol_select="tcp_protocol"
2969 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2970 tls_openssl_protocol_select="tcp_protocol"
2971 tls_schannel_protocol_deps="schannel"
2972 tls_schannel_protocol_select="tcp_protocol"
2973 tls_securetransport_protocol_deps="securetransport"
2974 tls_securetransport_protocol_select="tcp_protocol"
2975 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2976 udp_protocol_select="network"
2977 udplite_protocol_select="network"
2978 unix_protocol_deps="sys_un_h"
2979 unix_protocol_select="network"
2980
2981 # filters
2982 afftfilt_filter_deps="avcodec"
2983 afftfilt_filter_select="fft"
2984 amovie_filter_deps="avcodec avformat"
2985 aresample_filter_deps="swresample"
2986 ass_filter_deps="libass"
2987 asyncts_filter_deps="avresample"
2988 atempo_filter_deps="avcodec"
2989 atempo_filter_select="rdft"
2990 azmq_filter_deps="libzmq"
2991 blackframe_filter_deps="gpl"
2992 boxblur_filter_deps="gpl"
2993 bs2b_filter_deps="libbs2b"
2994 colormatrix_filter_deps="gpl"
2995 cover_rect_filter_deps="avcodec avformat gpl"
2996 cropdetect_filter_deps="gpl"
2997 delogo_filter_deps="gpl"
2998 deshake_filter_select="pixelutils"
2999 drawtext_filter_deps="libfreetype"
3000 ebur128_filter_deps="gpl"
3001 eq_filter_deps="gpl"
3002 fftfilt_filter_deps="avcodec"
3003 fftfilt_filter_select="rdft"
3004 find_rect_filter_deps="avcodec avformat gpl"
3005 firequalizer_filter_deps="avcodec"
3006 firequalizer_filter_select="rdft"
3007 flite_filter_deps="libflite"
3008 framerate_filter_select="pixelutils"
3009 frei0r_filter_deps="frei0r dlopen"
3010 frei0r_src_filter_deps="frei0r dlopen"
3011 fspp_filter_deps="gpl"
3012 geq_filter_deps="gpl"
3013 histeq_filter_deps="gpl"
3014 hqdn3d_filter_deps="gpl"
3015 interlace_filter_deps="gpl"
3016 kerndeint_filter_deps="gpl"
3017 ladspa_filter_deps="ladspa dlopen"
3018 loudnorm_filter_deps="libebur128"
3019 mcdeint_filter_deps="avcodec gpl"
3020 movie_filter_deps="avcodec avformat"
3021 mpdecimate_filter_deps="gpl"
3022 mpdecimate_filter_select="pixelutils"
3023 mptestsrc_filter_deps="gpl"
3024 negate_filter_deps="lut_filter"
3025 nnedi_filter_deps="gpl"
3026 ocr_filter_deps="libtesseract"
3027 ocv_filter_deps="libopencv"
3028 owdenoise_filter_deps="gpl"
3029 pan_filter_deps="swresample"
3030 perspective_filter_deps="gpl"
3031 phase_filter_deps="gpl"
3032 pp7_filter_deps="gpl"
3033 pp_filter_deps="gpl postproc"
3034 pullup_filter_deps="gpl"
3035 removelogo_filter_deps="avcodec avformat swscale"
3036 repeatfields_filter_deps="gpl"
3037 resample_filter_deps="avresample"
3038 rubberband_filter_deps="librubberband"
3039 sab_filter_deps="gpl swscale"
3040 scale2ref_filter_deps="swscale"
3041 scale_filter_deps="swscale"
3042 select_filter_select="pixelutils"
3043 showcqt_filter_deps="avcodec avformat swscale"
3044 showcqt_filter_select="fft"
3045 showfreqs_filter_deps="avcodec"
3046 showfreqs_filter_select="fft"
3047 showspectrum_filter_deps="avcodec"
3048 showspectrum_filter_select="fft"
3049 showspectrumpic_filter_deps="avcodec"
3050 showspectrumpic_filter_select="fft"
3051 smartblur_filter_deps="gpl swscale"
3052 sofalizer_filter_deps="netcdf avcodec"
3053 sofalizer_filter_select="fft"
3054 spectrumsynth_filter_deps="avcodec"
3055 spectrumsynth_filter_select="fft"
3056 spp_filter_deps="gpl avcodec"
3057 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3058 stereo3d_filter_deps="gpl"
3059 subtitles_filter_deps="avformat avcodec libass"
3060 super2xsai_filter_deps="gpl"
3061 pixfmts_super2xsai_test_deps="super2xsai_filter"
3062 tinterlace_filter_deps="gpl"
3063 tinterlace_merge_test_deps="tinterlace_filter"
3064 tinterlace_pad_test_deps="tinterlace_filter"
3065 uspp_filter_deps="gpl avcodec"
3066 vidstabdetect_filter_deps="libvidstab"
3067 vidstabtransform_filter_deps="libvidstab"
3068 zmq_filter_deps="libzmq"
3069 zoompan_filter_deps="swscale"
3070 zscale_filter_deps="libzimg"
3071 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3072
3073 # examples
3074 avcodec_example_deps="avcodec avutil"
3075 avio_dir_cmd="avformat avutil"
3076 avio_reading="avformat avcodec avutil"
3077 decoding_encoding_example_deps="avcodec avformat avutil"
3078 demuxing_decoding_example_deps="avcodec avformat avutil"
3079 extract_mvs_example_deps="avcodec avformat avutil"
3080 filter_audio_example_deps="avfilter avutil"
3081 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3082 filtering_video_example_deps="avfilter avcodec avformat avutil"
3083 metadata_example_deps="avformat avutil"
3084 muxing_example_deps="avcodec avformat avutil swscale"
3085 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3086 remuxing_example_deps="avcodec avformat avutil"
3087 resampling_audio_example_deps="avutil swresample"
3088 scaling_video_example_deps="avutil swscale"
3089 transcode_aac_example_deps="avcodec avformat swresample"
3090 transcoding_example_deps="avfilter avcodec avformat avutil"
3091
3092 # libraries, in linking order
3093 avcodec_deps="avutil"
3094 avdevice_deps="avformat avcodec avutil"
3095 avfilter_deps="avutil"
3096 avformat_deps="avcodec avutil"
3097 avresample_deps="avutil"
3098 postproc_deps="avutil gpl"
3099 swresample_deps="avutil"
3100 swscale_deps="avutil"
3101
3102 # programs
3103 ffmpeg_deps="avcodec avfilter avformat swresample"
3104 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3105                null_filter
3106                setpts_filter trim_filter"
3107 ffplay_deps="avcodec avformat swscale swresample sdl"
3108 ffplay_libs='$sdl_libs'
3109 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3110 ffprobe_deps="avcodec avformat"
3111 ffserver_deps="avformat fork sarestart"
3112 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3113
3114 # documentation
3115 podpages_deps="perl"
3116 manpages_deps="perl pod2man"
3117 htmlpages_deps="perl"
3118 htmlpages_deps_any="makeinfo_html texi2html"
3119 txtpages_deps="perl makeinfo"
3120 doc_deps_any="manpages htmlpages podpages txtpages"
3121
3122 # default parameters
3123
3124 logfile="config.log"
3125
3126 # installation paths
3127 prefix_default="/usr/local"
3128 bindir_default='${prefix}/bin'
3129 datadir_default='${prefix}/share/ffmpeg'
3130 docdir_default='${prefix}/share/doc/ffmpeg'
3131 incdir_default='${prefix}/include'
3132 libdir_default='${prefix}/lib'
3133 mandir_default='${prefix}/share/man'
3134
3135 # toolchain
3136 ar_default="ar"
3137 cc_default="gcc"
3138 cxx_default="g++"
3139 host_cc_default="gcc"
3140 cp_f="cp -f"
3141 doxygen_default="doxygen"
3142 install="install"
3143 ln_s_default="ln -s -f"
3144 nm_default="nm -g"
3145 objformat="elf"
3146 pkg_config_default=pkg-config
3147 ranlib_default="ranlib"
3148 strip_default="strip"
3149 yasmexe_default="yasm"
3150 windres_default="windres"
3151
3152 # OS
3153 target_os_default=$(tolower $(uname -s))
3154 host_os=$target_os_default
3155
3156 # machine
3157 if test "$target_os_default" = aix; then
3158     arch_default=$(uname -p)
3159     strip_default="strip -X32_64"
3160 else
3161     arch_default=$(uname -m)
3162 fi
3163 cpu="generic"
3164 intrinsics="none"
3165
3166 # configurable options
3167 enable $PROGRAM_LIST
3168 enable $DOCUMENT_LIST
3169 enable $EXAMPLE_LIST
3170 enable $(filter_out avresample $LIBRARY_LIST)
3171 enable stripping
3172
3173 enable asm
3174 enable debug
3175 enable doc
3176 enable faan faandct faanidct
3177 enable optimizations
3178 enable runtime_cpudetect
3179 enable safe_bitstream_reader
3180 enable static
3181 enable swscale_alpha
3182 enable valgrind_backtrace
3183
3184 sws_max_filter_size_default=256
3185 set_default sws_max_filter_size
3186
3187 # Enable platform codecs by default.
3188 enable audiotoolbox
3189
3190 # Enable hwaccels by default.
3191 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3192 enable xlib
3193
3194 enable vda_framework videotoolbox videotoolbox_encoder
3195
3196 # build settings
3197 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3198 LIBPREF="lib"
3199 LIBSUF=".a"
3200 FULLNAME='$(NAME)$(BUILDSUF)'
3201 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3202 SLIBPREF="lib"
3203 SLIBSUF=".so"
3204 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3205 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3206 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3207 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3208 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3209 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3210
3211 asflags_filter=echo
3212 cflags_filter=echo
3213 ldflags_filter=echo
3214
3215 AS_C='-c'
3216 AS_O='-o $@'
3217 CC_C='-c'
3218 CC_E='-E -o $@'
3219 CC_O='-o $@'
3220 CXX_C='-c'
3221 CXX_O='-o $@'
3222 OBJCC_C='-c'
3223 OBJCC_E='-E -o $@'
3224 OBJCC_O='-o $@'
3225 LD_O='-o $@'
3226 LD_LIB='-l%'
3227 LD_PATH='-L'
3228 HOSTCC_C='-c'
3229 HOSTCC_E='-E -o $@'
3230 HOSTCC_O='-o $@'
3231 HOSTLD_O='-o $@'
3232
3233 host_libs='-lm'
3234 host_cflags_filter=echo
3235 host_ldflags_filter=echo
3236
3237 target_path='$(CURDIR)'
3238
3239 # since the object filename is not given with the -MM flag, the compiler
3240 # is only able to print the basename, and we must add the path ourselves
3241 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3242 DEPFLAGS='-MM'
3243
3244 # find source path
3245 if test -f configure; then
3246     source_path=.
3247 else
3248     source_path=$(cd $(dirname "$0"); pwd)
3249     case "$source_path" in
3250         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3251     esac
3252     test -e "$source_path/config.h" &&
3253         die "Out of tree builds are impossible with config.h in source dir."
3254 fi
3255
3256 for v in "$@"; do
3257     r=${v#*=}
3258     l=${v%"$r"}
3259     r=$(sh_quote "$r")
3260     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3261 done
3262
3263 find_things(){
3264     thing=$1
3265     pattern=$2
3266     file=$source_path/$3
3267     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3268 }
3269
3270 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3271 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3272 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3273 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3274 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3275 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3276 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3277 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3278 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3279
3280 find_things_extern(){
3281     thing=$1
3282     pattern=$2
3283     file=$source_path/$3
3284     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3285 }
3286
3287 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3288 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3289
3290 ALL_COMPONENTS="
3291     $BSF_LIST
3292     $DECODER_LIST
3293     $DEMUXER_LIST
3294     $ENCODER_LIST
3295     $FILTER_LIST
3296     $HWACCEL_LIST
3297     $INDEV_LIST
3298     $MUXER_LIST
3299     $OUTDEV_LIST
3300     $PARSER_LIST
3301     $PROTOCOL_LIST
3302 "
3303
3304 for n in $COMPONENT_LIST; do
3305     v=$(toupper ${n%s})_LIST
3306     eval enable \$$v
3307     eval ${n}_if_any="\$$v"
3308 done
3309
3310 enable $ARCH_EXT_LIST
3311
3312 die_unknown(){
3313     echo "Unknown option \"$1\"."
3314     echo "See $0 --help for available options."
3315     exit 1
3316 }
3317
3318 print_in_columns() {
3319     cols=$(expr $ncols / 24)
3320     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3321 }
3322
3323 show_list() {
3324     suffix=_$1
3325     shift
3326     echo $* | sed s/$suffix//g | print_in_columns
3327     exit 0
3328 }
3329
3330 rand_list(){
3331     IFS=', '
3332     set -- $*
3333     unset IFS
3334     for thing; do
3335         comp=${thing%:*}
3336         prob=${thing#$comp}
3337         prob=${prob#:}
3338         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3339         echo "prob ${prob:-0.5}"
3340         printf '%s\n' $comp
3341     done
3342 }
3343
3344 do_random(){
3345     action=$1
3346     shift
3347     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3348     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3349 }
3350
3351 for opt do
3352     optval="${opt#*=}"
3353     case "$opt" in
3354         --extra-ldflags=*)
3355             add_ldflags $optval
3356         ;;
3357         --extra-ldexeflags=*)
3358             add_ldexeflags $optval
3359         ;;
3360         --extra-ldlibflags=*)
3361             add_ldlibflags $optval
3362         ;;
3363         --extra-libs=*)
3364             add_extralibs $optval
3365         ;;
3366         --disable-devices)
3367             disable $INDEV_LIST $OUTDEV_LIST
3368         ;;
3369         --enable-debug=*)
3370             debuglevel="$optval"
3371         ;;
3372         --disable-programs)
3373             disable $PROGRAM_LIST
3374         ;;
3375         --disable-everything)
3376             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3377         ;;
3378         --disable-all)
3379             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3380             disable $LIBRARY_LIST $PROGRAM_LIST doc
3381             enable avutil
3382         ;;
3383         --enable-random|--disable-random)
3384             action=${opt%%-random}
3385             do_random ${action#--} $COMPONENT_LIST
3386         ;;
3387         --enable-random=*|--disable-random=*)
3388             action=${opt%%-random=*}
3389             do_random ${action#--} $optval
3390         ;;
3391         --enable-*=*|--disable-*=*)
3392             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3393             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3394             eval list=\$$(toupper $thing)_LIST
3395             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3396             list=$(filter "$name" $list)
3397             [ "$list" = "" ] && warn "Option $opt did not match anything"
3398             $action $list
3399         ;;
3400         --enable-?*|--disable-?*)
3401             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3402             if is_in $option $COMPONENT_LIST; then
3403                 test $action = disable && action=unset
3404                 eval $action \$$(toupper ${option%s})_LIST
3405             elif is_in $option $CMDLINE_SELECT; then
3406                 $action $option
3407             else
3408                 die_unknown $opt
3409             fi
3410         ;;
3411         --list-*)
3412             NAME="${opt#--list-}"
3413             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3414             NAME=${NAME%s}
3415             eval show_list $NAME \$$(toupper $NAME)_LIST
3416         ;;
3417         --help|-h) show_help
3418         ;;
3419         --fatal-warnings) enable fatal_warnings
3420         ;;
3421         *)
3422             optname="${opt%%=*}"
3423             optname="${optname#--}"
3424             optname=$(echo "$optname" | sed 's/-/_/g')
3425             if is_in $optname $CMDLINE_SET; then
3426                 eval $optname='$optval'
3427             elif is_in $optname $CMDLINE_APPEND; then
3428                 append $optname "$optval"
3429             else
3430                 die_unknown $opt
3431             fi
3432         ;;
3433     esac
3434 done
3435
3436 for e in $env; do
3437     eval "export $e"
3438 done
3439
3440 disabled logging && logfile=/dev/null
3441
3442 # Disable all the library-specific components if the library itself
3443 # is disabled, see AVCODEC_LIST and following _LIST variables.
3444
3445 disable_components(){
3446     disabled ${1} && disable $(
3447         eval components="\$$(toupper ${1})_COMPONENTS"
3448         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3449     )
3450 }
3451
3452 map 'disable_components $v' $LIBRARY_LIST
3453
3454 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3455 set >> $logfile
3456
3457 test -n "$valgrind" && toolchain="valgrind-memcheck"
3458
3459 case "$toolchain" in
3460     *-asan)
3461         cc_default="${toolchain%-asan}"
3462         add_cflags  -fsanitize=address
3463         add_ldflags -fsanitize=address
3464     ;;
3465     *-msan)
3466         cc_default="${toolchain%-msan}"
3467         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3468         add_ldflags -fsanitize=memory
3469     ;;
3470     *-tsan)
3471         cc_default="${toolchain%-tsan}"
3472         add_cflags  -fsanitize=thread -pie
3473         add_ldflags -fsanitize=thread -pie
3474         case "$toolchain" in
3475             gcc-tsan)
3476                 add_cflags  -fPIC
3477                 add_ldflags -fPIC
3478                 ;;
3479         esac
3480     ;;
3481     *-usan)
3482         cc_default="${toolchain%-usan}"
3483         add_cflags  -fsanitize=undefined
3484         add_ldflags -fsanitize=undefined
3485     ;;
3486     valgrind-*)
3487         target_exec_default="valgrind"
3488         case "$toolchain" in
3489             valgrind-massif)
3490                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3491                 ;;
3492             valgrind-memcheck)
3493                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3494                 ;;
3495         esac
3496     ;;
3497     msvc)
3498         # Check whether the current MSVC version needs the C99 converter.
3499         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3500         # support enough of C99 to build ffmpeg. Default to the new
3501         # behaviour if the regexp was unable to match anything, since this
3502         # successfully parses the version number of existing supported
3503         # versions that require the converter (MSVC 2010 and 2012).
3504         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3505         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3506             cc_default="cl"
3507         else
3508             cc_default="c99wrap cl"
3509         fi
3510         ld_default="$source_path/compat/windows/mslink"
3511         nm_default="dumpbin -symbols"
3512         ar_default="lib"
3513         case "$arch" in
3514         arm*)
3515             as_default="armasm"
3516             ;;
3517         esac
3518         target_os_default="win32"
3519         # Use a relative path for TMPDIR. This makes sure all the
3520         # ffconf temp files are written with a relative path, avoiding
3521         # issues with msys/win32 path conversion for MSVC parameters
3522         # such as -Fo<file> or -out:<file>.
3523         TMPDIR=.
3524     ;;
3525     icl)
3526         cc_default="icl"
3527         ld_default="xilink"
3528         nm_default="dumpbin -symbols"
3529         ar_default="xilib"
3530         target_os_default="win32"
3531         TMPDIR=.
3532     ;;
3533     gcov)
3534         add_cflags  -fprofile-arcs -ftest-coverage
3535         add_ldflags -fprofile-arcs -ftest-coverage
3536     ;;
3537     llvm-cov)
3538         add_cflags -fprofile-arcs -ftest-coverage
3539         add_ldflags --coverage
3540     ;;
3541     hardened)
3542         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3543         add_cflags   -fno-strict-overflow -fstack-protector-all
3544         add_ldflags  -Wl,-z,relro -Wl,-z,now
3545     ;;
3546     ?*)
3547         die "Unknown toolchain $toolchain"
3548     ;;
3549 esac
3550
3551 test -n "$cross_prefix" && enable cross_compile
3552
3553 if enabled cross_compile; then
3554     test -n "$arch" && test -n "$target_os" ||
3555         die "Must specify target arch and OS when cross-compiling"
3556 fi
3557
3558 ar_default="${cross_prefix}${ar_default}"
3559 cc_default="${cross_prefix}${cc_default}"
3560 cxx_default="${cross_prefix}${cxx_default}"
3561 nm_default="${cross_prefix}${nm_default}"
3562 pkg_config_default="${cross_prefix}${pkg_config_default}"
3563 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3564     ranlib_default="${cross_prefix}${ranlib_default} -D"
3565 else
3566     ranlib_default="${cross_prefix}${ranlib_default}"
3567 fi
3568 strip_default="${cross_prefix}${strip_default}"
3569 windres_default="${cross_prefix}${windres_default}"
3570
3571 sysinclude_default="${sysroot}/usr/include"
3572
3573 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3574     target_exec target_os yasmexe
3575 enabled cross_compile || host_cc_default=$cc
3576 set_default host_cc
3577
3578 pkg_config_fail_message=""
3579 if ! $pkg_config --version >/dev/null 2>&1; then
3580     warn "$pkg_config not found, library detection may fail."
3581     pkg_config=false
3582 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3583     pkg_config_fail_message="
3584 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3585 fi
3586
3587 if test $doxygen != $doxygen_default && \
3588   ! $doxygen --version >/dev/null 2>&1; then
3589     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3590 fi
3591
3592 exesuf() {
3593     case $1 in
3594         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3595     esac
3596 }
3597
3598 EXESUF=$(exesuf $target_os)
3599 HOSTEXESUF=$(exesuf $host_os)
3600
3601 # set temporary file name
3602 : ${TMPDIR:=$TEMPDIR}
3603 : ${TMPDIR:=$TMP}
3604 : ${TMPDIR:=/tmp}
3605
3606 if [ -n "$tempprefix" ] ; then
3607     mktemp(){
3608         echo $tempprefix.${HOSTNAME}.${UID}
3609     }
3610 elif ! check_cmd mktemp -u XXXXXX; then
3611     # simple replacement for missing mktemp
3612     # NOT SAFE FOR GENERAL USE
3613     mktemp(){
3614         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3615     }
3616 fi
3617
3618 tmpfile(){
3619     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3620         (set -C; exec > $tmp) 2>/dev/null ||
3621         die "Unable to create temporary file in $TMPDIR."
3622     append TMPFILES $tmp
3623     eval $1=$tmp
3624 }
3625
3626 trap 'rm -f -- $TMPFILES' EXIT
3627
3628 tmpfile TMPASM .asm
3629 tmpfile TMPC   .c
3630 tmpfile TMPCPP .cpp
3631 tmpfile TMPE   $EXESUF
3632 tmpfile TMPH   .h
3633 tmpfile TMPM   .m
3634 tmpfile TMPO   .o
3635 tmpfile TMPS   .S
3636 tmpfile TMPSH  .sh
3637 tmpfile TMPV   .ver
3638
3639 unset -f mktemp
3640
3641 chmod +x $TMPE
3642
3643 # make sure we can execute files in $TMPDIR
3644 cat > $TMPSH 2>> $logfile <<EOF
3645 #! /bin/sh
3646 EOF
3647 chmod +x $TMPSH >> $logfile 2>&1
3648 if ! $TMPSH >> $logfile 2>&1; then
3649     cat <<EOF
3650 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3651 variable to another directory and make sure that it is not mounted noexec.
3652 EOF
3653     die "Sanity test failed."
3654 fi
3655
3656 armasm_flags(){
3657     for flag; do
3658         case $flag in
3659             # Filter out MSVC cl.exe options from cflags that shouldn't
3660             # be passed to gas-preprocessor
3661             -M[TD]*)                                            ;;
3662             *)                  echo $flag                      ;;
3663         esac
3664    done
3665 }
3666
3667 ccc_flags(){
3668     for flag; do
3669         case $flag in
3670             -std=c99)           echo -c99                       ;;
3671             -mcpu=*)            echo -arch ${flag#*=}           ;;
3672             -mieee)             echo -ieee                      ;;
3673             -O*|-fast)          echo $flag                      ;;
3674             -fno-math-errno)    echo -assume nomath_errno       ;;
3675             -g)                 echo -g3                        ;;
3676             -Wall)              echo -msg_enable level2         ;;
3677             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3678             -Wl,*)              echo $flag                      ;;
3679             -f*|-W*)                                            ;;
3680             *)                  echo $flag                      ;;
3681         esac
3682    done
3683 }
3684
3685 cparser_flags(){
3686     for flag; do
3687         case $flag in
3688             -Wno-switch)             echo -Wno-switch-enum ;;
3689             -Wno-format-zero-length) ;;
3690             -Wdisabled-optimization) ;;
3691             -Wno-pointer-sign)       echo -Wno-other ;;
3692             *)                       echo $flag ;;
3693         esac
3694     done
3695 }
3696
3697 msvc_common_flags(){
3698     for flag; do
3699         case $flag in
3700             # In addition to specifying certain flags under the compiler
3701             # specific filters, they must be specified here as well or else the
3702             # generic catch all at the bottom will print the original flag.
3703             -Wall)                ;;
3704             -std=c99)             ;;
3705             # Common flags
3706             -fomit-frame-pointer) ;;
3707             -g)                   echo -Z7 ;;
3708             -fno-math-errno)      ;;
3709             -fno-common)          ;;
3710             -fno-signed-zeros)    ;;
3711             -fPIC)                ;;
3712             -mthumb)              ;;
3713             -march=*)             ;;
3714             -lz)                  echo zlib.lib ;;
3715             -lavifil32)           echo vfw32.lib ;;
3716             -lavicap32)           echo vfw32.lib user32.lib ;;
3717             -lx264)               echo libx264.lib ;;
3718             -l*)                  echo ${flag#-l}.lib ;;
3719             -LARGEADDRESSAWARE)   echo $flag ;;
3720             -L*)                  echo -libpath:${flag#-L} ;;
3721             *)                    echo $flag ;;
3722         esac
3723     done
3724 }
3725
3726 msvc_flags(){
3727     msvc_common_flags "$@"
3728     for flag; do
3729         case $flag in
3730             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3731                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3732                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3733                                        -wd4307 \
3734                                        -wd4273 -wd4554 -wd4701 ;;
3735         esac
3736     done
3737 }
3738
3739 icl_flags(){
3740     msvc_common_flags "$@"
3741     for flag; do
3742         case $flag in
3743             # Despite what Intel's documentation says -Wall, which is supported
3744             # on Windows, does enable remarks so disable them here.
3745             -Wall)                echo $flag -Qdiag-disable:remark ;;
3746             -std=c99)             echo -Qstd=c99 ;;
3747             -flto)                echo -ipo ;;
3748         esac
3749     done
3750 }
3751
3752 icc_flags(){
3753     for flag; do
3754         case $flag in
3755             -flto)                echo -ipo ;;
3756             *)                    echo $flag ;;
3757         esac
3758     done
3759 }
3760
3761 pgi_flags(){
3762     for flag; do
3763         case $flag in
3764             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3765             -fomit-frame-pointer) echo -Mnoframe ;;
3766             -g)                   echo -gopt ;;
3767             *)                    echo $flag ;;
3768         esac
3769     done
3770 }
3771
3772 suncc_flags(){
3773     for flag; do
3774         case $flag in
3775             -march=*|-mcpu=*)
3776                 case "${flag#*=}" in
3777                     native)                   echo -xtarget=native       ;;
3778                     v9|niagara)               echo -xarch=sparc          ;;
3779                     ultrasparc)               echo -xarch=sparcvis       ;;
3780                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3781                     i586|pentium)             echo -xchip=pentium        ;;
3782                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3783                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3784                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3785                     pentium4*)          echo -xtarget=pentium4           ;;
3786                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3787                     *-sse3)             echo -xarch=sse3                 ;;
3788                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3789                     bonnell)                   echo -xarch=ssse3         ;;
3790                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3791                     westmere)                  echo -xtarget=westmere    ;;
3792                     silvermont)                echo -xarch=sse4_2        ;;
3793                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3794                     core-avx*|ivybridge|haswell|broadwell)
3795                                                echo -xarch=avx           ;;
3796                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3797                     btver1)                    echo -xarch=amdsse4a      ;;
3798                     btver2|bdver*)             echo -xarch=avx           ;;
3799                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3800                     k8|opteron|athlon64|athlon-fx)
3801                                                echo -xarch=sse2a         ;;
3802                     athlon*)                   echo -xarch=pentium_proa  ;;
3803                 esac
3804                 ;;
3805             -std=c99)             echo -xc99              ;;
3806             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3807             -fPIC)                echo -KPIC -xcode=pic32 ;;
3808             -W*,*)                echo $flag              ;;
3809             -f*-*|-W*|-mimpure-text)                      ;;
3810             -shared)              echo -G                 ;;
3811             *)                    echo $flag              ;;
3812         esac
3813     done
3814 }
3815
3816 tms470_flags(){
3817     for flag; do
3818         case $flag in
3819             -march=*|-mcpu=*)
3820                 case "${flag#*=}" in
3821                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3822                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3823                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3824                     armv6*|arm11*)          echo -mv=6   ;;
3825                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3826                                             echo -mv=5e  ;;
3827                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3828                 esac
3829                 ;;
3830             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3831             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3832             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3833             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3834             -msoft-float)   echo --float_support=vfplib       ;;
3835             -O[0-3]|-mf=*)  echo $flag                        ;;
3836             -g)             echo -g -mn                       ;;
3837             -pds=*)         echo $flag                        ;;
3838             -D*|-I*)        echo $flag                        ;;
3839             --gcc|--abi=*)  echo $flag                        ;;
3840             -me)            echo $flag                        ;;
3841         esac
3842     done
3843 }
3844
3845 probe_cc(){
3846     pfx=$1
3847     _cc=$2
3848     first=$3
3849
3850     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3851     unset _ld_o _ldflags _ld_lib _ld_path
3852     unset _depflags _DEPCMD _DEPFLAGS
3853     _flags_filter=echo
3854
3855     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3856         true # no-op to avoid reading stdin in following checks
3857     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3858         _type=llvm_gcc
3859         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3860         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3861         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3862         _cflags_speed='-O3'
3863         _cflags_size='-Os'
3864     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3865         _type=gcc
3866         gcc_version=$($_cc --version | head -n1)
3867         gcc_basever=$($_cc -dumpversion)
3868         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3869         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3870         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3871         case $gcc_basever in
3872             2) ;;
3873             2.*) ;;
3874             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3875         esac
3876         if [ "$first" = true ]; then
3877             case $gcc_basever in
3878                 4.2*)
3879                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3880             esac
3881         fi
3882         _cflags_speed='-O3'
3883         _cflags_size='-Os'
3884     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3885         _type=icc
3886         _ident=$($_cc --version | head -n1)
3887         _depflags='-MMD'
3888         _cflags_speed='-O3'
3889         _cflags_size='-Os'
3890         _cflags_noopt='-O1'
3891         _flags_filter=icc_flags
3892     elif $_cc -v 2>&1 | grep -q xlc; then
3893         _type=xlc
3894         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3895         _cflags_speed='-O5'
3896         _cflags_size='-O5 -qcompact'
3897     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3898         _type=ccc
3899         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3900         _DEPFLAGS='-M'
3901         _cflags_speed='-fast'
3902         _cflags_size='-O1'
3903         _flags_filter=ccc_flags
3904     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3905         test -d "$sysroot" || die "No valid sysroot specified."
3906         _type=armcc
3907         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3908         armcc_conf="$PWD/armcc.conf"
3909         $_cc --arm_linux_configure                 \
3910              --arm_linux_config_file="$armcc_conf" \
3911              --configure_sysroot="$sysroot"        \
3912              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3913              die "Error creating armcc configuration file."
3914         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3915         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3916         as_default="${cross_prefix}gcc"
3917         _depflags='-MMD'
3918         _cflags_speed='-O3'
3919         _cflags_size='-Os'
3920     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3921         _type=tms470
3922         _ident=$($_cc -version | head -n1 | tr -s ' ')
3923         _flags='--gcc --abi=eabi -me'
3924         _cc_e='-ppl -fe=$@'
3925         _cc_o='-fe=$@'
3926         _depflags='-ppa -ppd=$(@:.o=.d)'
3927         _cflags_speed='-O3 -mf=5'
3928         _cflags_size='-O3 -mf=2'
3929         _flags_filter=tms470_flags
3930     elif $_cc -v 2>&1 | grep -q clang; then
3931         _type=clang
3932         _ident=$($_cc --version 2>/dev/null | head -n1)
3933         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3934         _cflags_speed='-O3'
3935         _cflags_size='-Os'
3936     elif $_cc -V 2>&1 | grep -q Sun; then
3937         _type=suncc
3938         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3939         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3940         _DEPFLAGS='-xM1 -xc99'
3941         _ldflags='-std=c99'
3942         _cflags_speed='-O5'
3943         _cflags_size='-O5 -xspace'
3944         _flags_filter=suncc_flags
3945     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3946         _type=pathscale
3947         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3948         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3949         _cflags_speed='-O2'
3950         _cflags_size='-Os'
3951         _flags_filter='filter_out -Wdisabled-optimization'
3952     elif $_cc -v 2>&1 | grep -q Open64; then
3953         _type=open64
3954         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3955         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3956         _cflags_speed='-O2'
3957         _cflags_size='-Os'
3958         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3959     elif $_cc -V 2>&1 | grep -q Portland; then
3960         _type=pgi
3961         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3962         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3963         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3964         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3965         _cflags_noopt="-O"
3966         _flags_filter=pgi_flags
3967     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3968         _type=armasm
3969         _ident=$($_cc | head -n1)
3970         # 4509: "This form of conditional instruction is deprecated"
3971         _flags="-nologo -ignore 4509"
3972         _flags_filter=armasm_flags
3973     elif $_cc 2>&1 | grep -q Intel; then
3974         _type=icl
3975         _ident=$($_cc 2>&1 | head -n1)
3976         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3977         # Not only is O3 broken on 13.x+ but it is slower on all previous
3978         # versions (tested) as well.
3979         _cflags_speed="-O2"
3980         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3981         if $_cc 2>&1 | grep -q Linker; then
3982             _ld_o='-out:$@'
3983         else
3984             _ld_o='-Fe$@'
3985         fi
3986         _cc_o='-Fo$@'
3987         _cc_e='-P'
3988         _flags_filter=icl_flags
3989         _ld_lib='lib%.a'
3990         _ld_path='-libpath:'
3991         # -Qdiag-error to make icl error when seeing certain unknown arguments
3992         _flags='-nologo -Qdiag-error:4044,10157'
3993         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3994         # with MSVC which enables it by default.
3995         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3996         disable stripping
3997     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3998         _type=msvc
3999         _ident=$($_cc 2>&1 | head -n1)
4000         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4001         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4002         _cflags_speed="-O2"
4003         _cflags_size="-O1"
4004         if $_cc -nologo- 2>&1 | grep -q Linker; then
4005             _ld_o='-out:$@'
4006         else
4007             _ld_o='-Fe$@'
4008         fi
4009         _cc_o='-Fo$@'
4010         _cc_e='-P -Fi$@'
4011         _flags_filter=msvc_flags
4012         _ld_lib='lib%.a'
4013         _ld_path='-libpath:'
4014         _flags='-nologo'
4015         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4016         disable stripping
4017     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4018         _type=cparser
4019         _ident=$($_cc --version | head -n1)
4020         _depflags='-MMD'
4021         _cflags_speed='-O4'
4022         _cflags_size='-O2'
4023         _flags_filter=cparser_flags
4024     fi
4025
4026     eval ${pfx}_type=\$_type
4027     eval ${pfx}_ident=\$_ident
4028 }
4029
4030 set_ccvars(){
4031     eval ${1}_C=\${_cc_c-\${${1}_C}}
4032     eval ${1}_E=\${_cc_e-\${${1}_E}}
4033     eval ${1}_O=\${_cc_o-\${${1}_O}}
4034
4035     if [ -n "$_depflags" ]; then
4036         eval ${1}_DEPFLAGS=\$_depflags
4037     else
4038         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4039         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4040         eval DEP${1}FLAGS=\$_flags
4041     fi
4042 }
4043
4044 probe_cc cc "$cc" "true"
4045 cflags_filter=$_flags_filter
4046 cflags_speed=$_cflags_speed
4047 cflags_size=$_cflags_size
4048 cflags_noopt=$_cflags_noopt
4049 add_cflags $_flags $_cflags
4050 cc_ldflags=$_ldflags
4051 set_ccvars CC
4052
4053 probe_cc hostcc "$host_cc"
4054 host_cflags_filter=$_flags_filter
4055 add_host_cflags  $_flags $_cflags
4056 set_ccvars HOSTCC
4057
4058 test -n "$cc_type" && enable $cc_type ||
4059     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4060
4061 : ${as_default:=$cc}
4062 : ${objcc_default:=$cc}
4063 : ${dep_cc_default:=$cc}
4064 : ${ld_default:=$cc}
4065 : ${host_ld_default:=$host_cc}
4066 set_default ar as objcc dep_cc ld ln_s host_ld windres
4067
4068 probe_cc as "$as"
4069 asflags_filter=$_flags_filter
4070 add_asflags $_flags $_cflags
4071 set_ccvars AS
4072
4073 probe_cc objcc "$objcc"
4074 objcflags_filter=$_flags_filter
4075 add_objcflags $_flags $_cflags
4076 set_ccvars OBJC
4077
4078 probe_cc ld "$ld"
4079 ldflags_filter=$_flags_filter
4080 add_ldflags $_flags $_ldflags
4081 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4082 LD_O=${_ld_o-$LD_O}
4083 LD_LIB=${_ld_lib-$LD_LIB}
4084 LD_PATH=${_ld_path-$LD_PATH}
4085
4086 probe_cc hostld "$host_ld"
4087 host_ldflags_filter=$_flags_filter
4088 add_host_ldflags $_flags $_ldflags
4089 HOSTLD_O=${_ld_o-$HOSTLD_O}
4090
4091 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4092     probe_cc depcc "$dep_cc"
4093     CCDEP=${_DEPCMD:-$DEPCMD}
4094     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4095     DEPCCFLAGS=$_flags
4096 fi
4097
4098 if $ar 2>&1 | grep -q Microsoft; then
4099     arflags="-nologo"
4100     ar_o='-out:$@'
4101 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4102     arflags="rq"
4103     ar_o='$@'
4104 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4105     arflags='-Xany -r -c'
4106     ar_o='$@'
4107 elif $ar 2>&1 | grep -q "\[D\] "; then
4108     arflags="rcD"
4109     ar_o='$@'
4110 else
4111     arflags="rc"
4112     ar_o='$@'
4113 fi
4114
4115 add_cflags $extra_cflags
4116 add_cxxflags $extra_cxxflags
4117 add_objcflags $extra_objcflags
4118 add_asflags $extra_cflags
4119
4120 if test -n "$sysroot"; then
4121     case "$cc_type" in
4122         gcc|llvm_gcc|clang)
4123             add_cppflags --sysroot="$sysroot"
4124             add_ldflags --sysroot="$sysroot"
4125 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4126             add_cppflags -isysroot "$sysroot"
4127             add_ldflags -isysroot "$sysroot"
4128         ;;
4129         tms470)
4130             add_cppflags -I"$sysinclude"
4131             add_ldflags  --sysroot="$sysroot"
4132         ;;
4133     esac
4134 fi
4135
4136 if test "$cpu" = host; then
4137     enabled cross_compile &&
4138         die "--cpu=host makes no sense when cross-compiling."
4139
4140     case "$cc_type" in
4141         gcc|llvm_gcc)
4142             check_native(){
4143                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4144                 sed -n "/cc1.*$1=/{
4145                             s/.*$1=\\([^ ]*\\).*/\\1/
4146                             p
4147                             q
4148                         }" $TMPE
4149             }
4150             cpu=$(check_native -march || check_native -mcpu)
4151         ;;
4152         clang)
4153             check_native(){
4154                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4155                 sed -n "/cc1.*-target-cpu /{
4156                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4157                             p
4158                             q
4159                         }" $TMPE
4160             }
4161             cpu=$(check_native -march)
4162         ;;
4163     esac
4164
4165     test "${cpu:-host}" = host &&
4166         die "--cpu=host not supported with compiler $cc"
4167 fi
4168
4169 # Deal with common $arch aliases
4170 case "$arch" in
4171     aarch64|arm64)
4172         arch="aarch64"
4173     ;;
4174     arm*|iPad*|iPhone*)
4175         arch="arm"
4176     ;;
4177     mips*|IP*)
4178         case "$arch" in
4179         *el)
4180             add_cppflags -EL
4181             add_ldflags -EL
4182         ;;
4183         *eb)
4184             add_cppflags -EB
4185             add_ldflags -EB
4186         ;;
4187         esac
4188         arch="mips"
4189     ;;
4190     parisc*|hppa*)
4191         arch="parisc"
4192     ;;
4193     "Power Macintosh"|ppc*|powerpc*)
4194         arch="ppc"
4195     ;;
4196     s390|s390x)
4197         arch="s390"
4198     ;;
4199     sh4|sh)
4200         arch="sh4"
4201     ;;
4202     sun4u|sparc*)
4203         arch="sparc"
4204     ;;
4205     tilegx|tile-gx)
4206         arch="tilegx"
4207     ;;
4208     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4209         arch="x86"
4210     ;;
4211 esac
4212
4213 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4214 enable $arch
4215
4216 # Add processor-specific flags
4217 if enabled aarch64; then
4218
4219     case $cpu in
4220         armv*)
4221             cpuflags="-march=$cpu"
4222         ;;
4223         *)
4224             cpuflags="-mcpu=$cpu"
4225         ;;
4226     esac
4227
4228 elif enabled alpha; then
4229
4230     cpuflags="-mcpu=$cpu"
4231
4232 elif enabled arm; then
4233
4234     check_arm_arch() {
4235         check_cpp_condition stddef.h \
4236             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4237             $cpuflags
4238     }
4239
4240     probe_arm_arch() {
4241         if   check_arm_arch 4;        then echo armv4
4242         elif check_arm_arch 4T;       then echo armv4t
4243         elif check_arm_arch 5;        then echo armv5
4244         elif check_arm_arch 5E;       then echo armv5e
4245         elif check_arm_arch 5T;       then echo armv5t
4246         elif check_arm_arch 5TE;      then echo armv5te
4247         elif check_arm_arch 5TEJ;     then echo armv5te
4248         elif check_arm_arch 6;        then echo armv6
4249         elif check_arm_arch 6J;       then echo armv6j
4250         elif check_arm_arch 6K;       then echo armv6k
4251         elif check_arm_arch 6Z;       then echo armv6z
4252         elif check_arm_arch 6ZK;      then echo armv6zk
4253         elif check_arm_arch 6T2;      then echo armv6t2
4254         elif check_arm_arch 7;        then echo armv7
4255         elif check_arm_arch 7A  7_A;  then echo armv7-a
4256         elif check_arm_arch 7S;       then echo armv7-a
4257         elif check_arm_arch 7R  7_R;  then echo armv7-r
4258         elif check_arm_arch 7M  7_M;  then echo armv7-m
4259         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4260         elif check_arm_arch 8A  8_A;  then echo armv8-a
4261         fi
4262     }
4263
4264     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4265
4266     case $cpu in
4267         armv*)
4268             cpuflags="-march=$cpu"
4269             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4270         ;;
4271         *)
4272             cpuflags="-mcpu=$cpu"
4273             case $cpu in
4274                 cortex-a*)                               subarch=armv7a  ;;
4275                 cortex-r*)                               subarch=armv7r  ;;
4276                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4277                 arm11*)                                  subarch=armv6   ;;
4278                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4279                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4280                 *)                             subarch=$(probe_arm_arch) ;;
4281             esac
4282         ;;
4283     esac
4284
4285     case "$subarch" in
4286         armv5t*)    enable fast_clz                ;;
4287         armv[6-8]*)
4288             enable fast_clz
4289             disabled fast_unaligned || enable fast_unaligned
4290             ;;
4291     esac
4292
4293 elif enabled avr32; then
4294
4295     case $cpu in
4296         ap7[02]0[0-2])
4297             subarch="avr32_ap"
4298             cpuflags="-mpart=$cpu"
4299         ;;
4300         ap)
4301             subarch="avr32_ap"
4302             cpuflags="-march=$cpu"
4303         ;;
4304         uc3[ab]*)
4305             subarch="avr32_uc"
4306             cpuflags="-mcpu=$cpu"
4307         ;;
4308         uc)
4309             subarch="avr32_uc"
4310             cpuflags="-march=$cpu"
4311         ;;
4312     esac
4313
4314 elif enabled bfin; then
4315
4316     cpuflags="-mcpu=$cpu"
4317
4318 elif enabled mips; then
4319
4320     cpuflags="-march=$cpu"
4321
4322     if [ "$cpu" != "generic" ]; then
4323         disable mips32r2
4324         disable mips32r5
4325         disable mips64r2
4326         disable mips32r6
4327         disable mips64r6
4328         disable loongson2
4329         disable loongson3
4330
4331         case $cpu in
4332             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4333                 enable mips32r2
4334                 disable msa
4335             ;;
4336             p5600|i6400)
4337                 disable mipsdsp
4338                 disable mipsdspr2
4339             ;;
4340             loongson*)
4341                 enable loongson2
4342                 enable loongson3
4343                 enable local_aligned_8 local_aligned_16 local_aligned_32
4344                 enable simd_align_16
4345                 enable fast_64bit
4346                 enable fast_clz
4347                 enable fast_cmov
4348                 enable fast_unaligned
4349                 disable aligned_stack
4350                 case $cpu in
4351                     loongson3*)
4352                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4353                     ;;
4354                     loongson2e)
4355                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4356                     ;;
4357                     loongson2f)
4358                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4359                     ;;
4360                 esac
4361             ;;
4362             *)
4363                 # Unknown CPU. Disable everything.
4364                 warn "unknown CPU. Disabling all MIPS optimizations."
4365                 disable mipsfpu
4366                 disable mipsdsp
4367                 disable mipsdspr2
4368                 disable msa
4369                 disable mmi
4370             ;;
4371         esac
4372
4373         case $cpu in
4374             24kc)
4375                 disable mipsfpu
4376                 disable mipsdsp
4377                 disable mipsdspr2
4378             ;;
4379             24kf*)
4380                 disable mipsdsp
4381                 disable mipsdspr2
4382             ;;
4383             24kec|34kc|1004kc)
4384                 disable mipsfpu
4385                 disable mipsdspr2
4386             ;;
4387             24kef*|34kf*|1004kf*)
4388                 disable mipsdspr2
4389             ;;
4390             74kc)
4391                 disable mipsfpu
4392             ;;
4393             p5600)
4394                 enable mips32r5
4395                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4396             ;;
4397             i6400)
4398                 enable mips64r6
4399                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4400             ;;
4401         esac
4402     else
4403         # We do not disable anything. Is up to the user to disable the unwanted features.
4404         warn 'generic cpu selected'
4405     fi
4406
4407 elif enabled ppc; then
4408
4409     disable ldbrx
4410
4411     case $(tolower $cpu) in
4412         601|ppc601|powerpc601)
4413             cpuflags="-mcpu=601"
4414             disable altivec
4415         ;;
4416         603*|ppc603*|powerpc603*)
4417             cpuflags="-mcpu=603"
4418             disable altivec
4419         ;;
4420         604*|ppc604*|powerpc604*)
4421             cpuflags="-mcpu=604"
4422             disable altivec
4423         ;;
4424         g3|75*|ppc75*|powerpc75*)
4425             cpuflags="-mcpu=750"
4426             disable altivec
4427         ;;
4428         g4|745*|ppc745*|powerpc745*)
4429             cpuflags="-mcpu=7450"
4430             disable vsx
4431         ;;
4432         74*|ppc74*|powerpc74*)
4433             cpuflags="-mcpu=7400"
4434             disable vsx
4435         ;;
4436         g5|970|ppc970|powerpc970)
4437             cpuflags="-mcpu=970"
4438             disable vsx
4439         ;;
4440         power[3-6]*)
4441             cpuflags="-mcpu=$cpu"
4442             disable vsx
4443         ;;
4444         power[7-8]*)
4445             cpuflags="-mcpu=$cpu"
4446         ;;
4447         cell)
4448             cpuflags="-mcpu=cell"
4449             enable ldbrx
4450             disable vsx
4451         ;;
4452         e500mc)
4453             cpuflags="-mcpu=e500mc"
4454             disable altivec
4455         ;;
4456         e500v2)
4457             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4458             disable altivec
4459             disable dcbzl
4460         ;;
4461         e500)
4462             cpuflags="-mcpu=8540 -mhard-float"
4463             disable altivec
4464             disable dcbzl
4465         ;;
4466     esac
4467
4468 elif enabled sparc; then
4469
4470     case $cpu in
4471         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4472             cpuflags="-mcpu=$cpu"
4473         ;;
4474         ultrasparc*|niagara[234])
4475             cpuflags="-mcpu=$cpu"
4476         ;;
4477     esac
4478
4479 elif enabled x86; then
4480
4481     case $cpu in
4482         i[345]86|pentium)
4483             cpuflags="-march=$cpu"
4484             disable i686
4485             disable mmx
4486         ;;
4487         # targets that do NOT support nopl and conditional mov (cmov)
4488         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4489             cpuflags="-march=$cpu"
4490             disable i686
4491         ;;
4492         # targets that do support nopl and conditional mov (cmov)
4493         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4494         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4495             cpuflags="-march=$cpu"
4496             enable i686
4497             enable fast_cmov
4498         ;;
4499         # targets that do support conditional mov but on which it's slow
4500         pentium4|pentium4m|prescott|nocona)
4501             cpuflags="-march=$cpu"
4502             enable i686
4503             disable fast_cmov
4504         ;;
4505     esac
4506
4507 fi
4508
4509 if [ "$cpu" != generic ]; then
4510     add_cflags  $cpuflags
4511     add_asflags $cpuflags
4512     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4513 fi
4514
4515 # compiler sanity check
4516 check_exec <<EOF
4517 int main(void){ return 0; }
4518 EOF
4519 if test "$?" != 0; then
4520     echo "$cc is unable to create an executable file."
4521     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4522         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4523         echo "Only do this if you know what cross compiling means."
4524     fi
4525     die "C compiler test failed."
4526 fi
4527
4528 add_cppflags -D_ISOC99_SOURCE
4529 add_cxxflags -D__STDC_CONSTANT_MACROS
4530 add_cxxflags -std=c++11
4531 check_cflags -std=c99
4532 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4533 #include <stdlib.h>
4534 EOF
4535 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4536 #include <stdlib.h>
4537 EOF
4538
4539 add_host_cppflags -D_ISOC99_SOURCE
4540 check_host_cflags -std=c99
4541 check_host_cflags -Wall
4542 check_host_cflags -O3
4543
4544 check_64bit(){
4545     arch32=$1
4546     arch64=$2
4547     expr=$3
4548     check_code cc "" "int test[2*($expr) - 1]" &&
4549         subarch=$arch64 || subarch=$arch32
4550 }
4551
4552 case "$arch" in
4553     aarch64|alpha|ia64)
4554         spic=$shared
4555     ;;
4556     mips)
4557         check_64bit mips mips64 '_MIPS_SIM > 1'
4558         spic=$shared
4559     ;;
4560     parisc)
4561         check_64bit parisc parisc64 'sizeof(void *) > 4'
4562         spic=$shared
4563     ;;
4564     ppc)
4565         check_64bit ppc ppc64 'sizeof(void *) > 4'
4566         spic=$shared
4567     ;;
4568     s390)
4569         check_64bit s390 s390x 'sizeof(void *) > 4'
4570         spic=$shared
4571     ;;
4572     sparc)
4573         check_64bit sparc sparc64 'sizeof(void *) > 4'
4574         spic=$shared
4575     ;;
4576     x86)
4577         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4578         # Treat x32 as x64 for now. Note it also needs spic=$shared
4579         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4580             subarch=x86_64
4581         if test "$subarch" = "x86_64"; then
4582             spic=$shared
4583         fi
4584     ;;
4585     ppc)
4586         check_cc <<EOF && subarch="ppc64"
4587         int test[(int)sizeof(char*) - 7];
4588 EOF
4589     ;;
4590 esac
4591
4592 enable $subarch
4593 enabled spic && enable_weak pic
4594
4595 # OS specific
4596 case $target_os in
4597     aix)
4598         SHFLAGS=-shared
4599         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4600         enabled shared && add_ldflags -Wl,-brtl
4601         ;;
4602     android)
4603         disable symver
4604         enable section_data_rel_ro
4605         SLIB_INSTALL_NAME='$(SLIBNAME)'
4606         SLIB_INSTALL_LINKS=
4607         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4608         ;;
4609     haiku)
4610         prefix_default="/boot/common"
4611         network_extralibs="-lnetwork"
4612         host_libs=
4613         ;;
4614     sunos)
4615         SHFLAGS='-shared -Wl,-h,$$(@F)'
4616         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4617         network_extralibs="-lsocket -lnsl"
4618         add_cppflags -D__EXTENSIONS__
4619         # When using suncc to build, the Solaris linker will mark
4620         # an executable with each instruction set encountered by
4621         # the Solaris assembler.  As our libraries contain their own
4622         # guards for processor-specific code, instead suppress
4623         # generation of the HWCAPS ELF section on Solaris x86 only.
4624         enabled_all suncc x86 &&
4625             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4626             add_ldflags -Wl,-M,mapfile
4627         nm_default='nm -P -g'
4628         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4629         ;;
4630     netbsd)
4631         disable symver
4632         oss_indev_extralibs="-lossaudio"
4633         oss_outdev_extralibs="-lossaudio"
4634         enabled gcc || check_ldflags -Wl,-zmuldefs
4635         ;;
4636     openbsd|bitrig)
4637         disable symver
4638         SHFLAGS='-shared'
4639         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4640         SLIB_INSTALL_LINKS=
4641         oss_indev_extralibs="-lossaudio"
4642         oss_outdev_extralibs="-lossaudio"
4643         ;;
4644     dragonfly)
4645         disable symver
4646         ;;
4647     freebsd)
4648         ;;
4649     bsd/os)
4650         add_extralibs -lpoll -lgnugetopt
4651         strip="strip -d"
4652         ;;
4653     darwin)
4654         enabled ppc && add_asflags -force_cpusubtype_ALL
4655         install_name_dir_default='$(SHLIBDIR)'
4656         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4657         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4658         strip="${strip} -x"
4659         add_ldflags -Wl,-dynamic,-search_paths_first
4660         SLIBSUF=".dylib"
4661         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4662         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4663         objformat="macho"
4664         enabled x86_64 && objformat="macho64"
4665         enabled_any pic shared x86_64 ||
4666             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4667         check_header dispatch/dispatch.h &&
4668             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4669         ;;
4670     msys*)
4671         die "Native MSYS builds are discouraged, please use the MINGW environment."
4672         ;;
4673     mingw32*|mingw64*)
4674         if test $target_os = "mingw32ce"; then
4675             disable network
4676         else
4677             target_os=mingw32
4678         fi
4679         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4680         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4681         LIBTARGET=i386
4682         if enabled x86_64; then
4683             LIBTARGET="i386:x86-64"
4684         elif enabled arm; then
4685             LIBTARGET=arm-wince
4686         fi
4687         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4688         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4689         shlibdir_default="$bindir_default"
4690         SLIBPREF=""
4691         SLIBSUF=".dll"
4692         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4693         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4694         dlltool="${cross_prefix}dlltool"
4695         if check_cmd lib.exe -list; then
4696             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4697             if enabled x86_64; then
4698                 LIBTARGET=x64
4699             fi
4700         elif check_cmd $dlltool --version; then
4701             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4702         fi
4703         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4704         SLIB_INSTALL_LINKS=
4705         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4706         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4707         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4708         objformat="win32"
4709         ranlib=:
4710         enable dos_paths
4711         check_ldflags -Wl,--nxcompat,--dynamicbase
4712         # Lets work around some stupidity in binutils.
4713         # ld will strip relocations from executables even though we need them
4714         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4715         # however ld then forgets what the entry point should be (oops) so we
4716         # have to manually (re)set it.
4717         if enabled x86_32; then
4718             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4719         elif enabled x86_64; then
4720             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4721             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4722             # Set image base >4GB for extra entropy with HEASLR
4723             add_ldexeflags -Wl,--image-base,0x140000000
4724             append SHFLAGS -Wl,--image-base,0x180000000
4725         fi
4726         ;;
4727     win32|win64)
4728         disable symver
4729         if enabled shared; then
4730             # Link to the import library instead of the normal static library
4731             # for shared libs.
4732             LD_LIB='%.lib'
4733             # Cannot build both shared and static libs with MSVC or icl.
4734             disable static
4735         fi
4736         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4737         shlibdir_default="$bindir_default"
4738         SLIBPREF=""
4739         SLIBSUF=".dll"
4740         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4741         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4742         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4743         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4744         SLIB_INSTALL_LINKS=
4745         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4746         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4747         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4748         objformat="win32"
4749         ranlib=:
4750         enable dos_paths
4751         ;;
4752     cygwin*)
4753         target_os=cygwin
4754         shlibdir_default="$bindir_default"
4755         SLIBPREF="cyg"
4756         SLIBSUF=".dll"
4757         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4758         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4759         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4760         SLIB_INSTALL_LINKS=
4761         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4762         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4763         objformat="win32"
4764         enable dos_paths
4765         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4766         ;;
4767     *-dos|freedos|opendos)
4768         network_extralibs="-lsocket"
4769         objformat="coff"
4770         enable dos_paths
4771         add_cppflags -U__STRICT_ANSI__
4772         ;;
4773     linux)
4774         enable dv1394
4775         enable section_data_rel_ro
4776         ;;
4777     irix*)
4778         target_os=irix
4779         ranlib="echo ignoring ranlib"
4780         ;;
4781     os/2*)
4782         strip="lxlite -CS"
4783         objformat="aout"
4784         add_cppflags -D_GNU_SOURCE
4785         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4786         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4787         LIBSUF="_s.a"
4788         SLIBPREF=""
4789         SLIBSUF=".dll"
4790         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4791         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4792         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4793             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4794             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4795             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4796             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4797         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4798             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4799         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4800         SLIB_INSTALL_LINKS=
4801         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4802         enable dos_paths
4803         enable_weak os2threads
4804         ;;
4805     gnu/kfreebsd)
4806         add_cppflags -D_BSD_SOURCE
4807         ;;
4808     gnu)
4809         ;;
4810     qnx)
4811         add_cppflags -D_QNX_SOURCE
4812         network_extralibs="-lsocket"
4813         ;;
4814     symbian)
4815         SLIBSUF=".dll"
4816         enable dos_paths
4817         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4818         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4819         add_ldflags -Wl,--target1-abs,--no-undefined \
4820                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4821                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4822         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4823                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4824                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4825         ;;
4826     osf1)
4827         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4828         ;;
4829     minix)
4830         ;;
4831     plan9)
4832         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4833                      -D_REENTRANT_SOURCE        \
4834                      -D_RESEARCH_SOURCE         \
4835                      -DFD_SETSIZE=96            \
4836                      -DHAVE_SOCK_OPTS
4837         add_compat strtod.o strtod=avpriv_strtod
4838         network_extralibs='-lbsd'
4839         exeobjs=compat/plan9/main.o
4840         disable ffserver
4841         cp_f='cp'
4842         ;;
4843     none)
4844         ;;
4845     *)
4846         die "Unknown OS '$target_os'."
4847         ;;
4848 esac
4849
4850 # test if creating links works
4851 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4852 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4853 mkdir "$link_dest"
4854 $ln_s "$link_dest" "$link_name"
4855 touch "$link_dest/test_file"
4856 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4857     # create link to source path
4858     [ -e src ] && rm src
4859     $ln_s "$source_path" src
4860     source_link=src
4861 else
4862     # creating directory links doesn't work
4863     # fall back to using the full source path
4864     source_link="$source_path"
4865 fi
4866 # cleanup
4867 rm -r "$link_dest"
4868 rm -r "$link_name"
4869
4870 # determine libc flavour
4871
4872 probe_libc(){
4873     pfx=$1
4874     pfx_no_=${pfx%_}
4875     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4876     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4877         eval ${pfx}libc_type=uclibc
4878         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4879     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then