lavf: add libopenmpt demuxer
[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-libopenmpt      enable decoding tracked files via libopenmpt [no]
249   --enable-libopus         enable Opus de/encoding via libopus [no]
250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
253   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
257   --enable-libsoxr         enable Include libsoxr resampling [no]
258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
259   --enable-libssh          enable SFTP protocol via libssh [no]
260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
261   --enable-libtheora       enable Theora encoding via libtheora [no]
262   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
263   --enable-libv4l2         enable libv4l2/v4l-utils [no]
264   --enable-libvidstab      enable video stabilization using vid.stab [no]
265   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
266   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
267                            native implementation exists [no]
268   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
269   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
270   --enable-libwebp         enable WebP encoding via libwebp [no]
271   --enable-libx264         enable H.264 encoding via x264 [no]
272   --enable-libx265         enable HEVC encoding via x265 [no]
273   --enable-libxavs         enable AVS encoding via xavs [no]
274   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
275   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
276   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
277   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
278   --enable-libxvid         enable Xvid encoding via xvidcore,
279                            native MPEG-4/Xvid encoder exists [no]
280   --enable-libzimg         enable z.lib, needed for zscale filter [no]
281   --enable-libzmq          enable message passing via libzmq [no]
282   --enable-libzvbi         enable teletext support via libzvbi [no]
283   --disable-lzma           disable lzma [autodetect]
284   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
285   --enable-mediacodec      enable Android MediaCodec support [no]
286   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
287   --enable-openal          enable OpenAL 1.1 capture support [no]
288   --enable-opencl          enable OpenCL code
289   --enable-opengl          enable OpenGL rendering [no]
290   --enable-openssl         enable openssl, needed for https support
291                            if gnutls is not used [no]
292   --disable-schannel       disable SChannel SSP, needed for TLS support on
293                            Windows if openssl and gnutls are not used [autodetect]
294   --disable-sdl            disable sdl [autodetect]
295   --disable-securetransport disable Secure Transport, needed for TLS support
296                            on OSX if openssl and gnutls are not used [autodetect]
297   --enable-x11grab         enable X11 grabbing (legacy) [no]
298   --disable-xlib           disable xlib [autodetect]
299   --disable-zlib           disable zlib [autodetect]
300
301   The following libraries provide various hardware acceleration features:
302   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
303   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
304   --enable-cuvid           enable Nvidia CUVID support [autodetect]
305   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
306   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
307   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
308   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
309   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
310   --enable-nvenc           enable Nvidia video encoding code [no]
311   --enable-omx             enable OpenMAX IL code [no]
312   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
313   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
314   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
315   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
316   --disable-videotoolbox   disable VideoToolbox code [autodetect]
317
318 Toolchain options:
319   --arch=ARCH              select architecture [$arch]
320   --cpu=CPU                select the minimum required CPU (affects
321                            instruction selection, may crash on older CPUs)
322   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
323   --progs-suffix=SUFFIX    program name suffix []
324   --enable-cross-compile   assume a cross-compiler is used
325   --sysroot=PATH           root of cross-build tree
326   --sysinclude=PATH        location of cross-build system headers
327   --target-os=OS           compiler targets OS [$target_os]
328   --target-exec=CMD        command to run executables on target
329   --target-path=DIR        path to view of build directory on target
330   --target-samples=DIR     path to samples directory on target
331   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
332   --toolchain=NAME         set tool defaults according to NAME
333   --nm=NM                  use nm tool NM [$nm_default]
334   --ar=AR                  use archive tool AR [$ar_default]
335   --as=AS                  use assembler AS [$as_default]
336   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
337   --strip=STRIP            use strip tool STRIP [$strip_default]
338   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
339   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
340   --cc=CC                  use C compiler CC [$cc_default]
341   --cxx=CXX                use C compiler CXX [$cxx_default]
342   --objcc=OCC              use ObjC compiler OCC [$cc_default]
343   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
344   --ld=LD                  use linker LD [$ld_default]
345   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
346   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
347   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
348   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
349   --host-cc=HOSTCC         use host C compiler HOSTCC
350   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
351   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
352   --host-ld=HOSTLD         use host linker HOSTLD
353   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
354   --host-libs=HLIBS        use libs HLIBS when linking for host
355   --host-os=OS             compiler host OS [$target_os]
356   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
357   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
358   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
359   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
360   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
361   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
362   --extra-libs=ELIBS       add ELIBS [$ELIBS]
363   --extra-version=STRING   version string suffix []
364   --optflags=OPTFLAGS      override optimization-related compiler flags
365   --build-suffix=SUFFIX    library name suffix []
366   --enable-pic             build position-independent code
367   --enable-thumb           compile for Thumb instruction set
368   --enable-lto             use link-time optimization
369   --env="ENV=override"     override the environment variables
370
371 Advanced options (experts only):
372   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
373   --custom-allocator=NAME  use a supported custom allocator
374   --disable-symver         disable symbol versioning
375   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
376   --disable-safe-bitstream-reader
377                            disable buffer boundary checking in bitreaders
378                            (faster, but may crash)
379   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
380   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
381
382 Optimization options (experts only):
383   --disable-asm            disable all assembly optimizations
384   --disable-altivec        disable AltiVec optimizations
385   --disable-vsx            disable VSX optimizations
386   --disable-power8         disable POWER8 optimizations
387   --disable-amd3dnow       disable 3DNow! optimizations
388   --disable-amd3dnowext    disable 3DNow! extended optimizations
389   --disable-mmx            disable MMX optimizations
390   --disable-mmxext         disable MMXEXT optimizations
391   --disable-sse            disable SSE optimizations
392   --disable-sse2           disable SSE2 optimizations
393   --disable-sse3           disable SSE3 optimizations
394   --disable-ssse3          disable SSSE3 optimizations
395   --disable-sse4           disable SSE4 optimizations
396   --disable-sse42          disable SSE4.2 optimizations
397   --disable-avx            disable AVX optimizations
398   --disable-xop            disable XOP optimizations
399   --disable-fma3           disable FMA3 optimizations
400   --disable-fma4           disable FMA4 optimizations
401   --disable-avx2           disable AVX2 optimizations
402   --disable-aesni          disable AESNI optimizations
403   --disable-armv5te        disable armv5te optimizations
404   --disable-armv6          disable armv6 optimizations
405   --disable-armv6t2        disable armv6t2 optimizations
406   --disable-vfp            disable VFP optimizations
407   --disable-neon           disable NEON optimizations
408   --disable-inline-asm     disable use of inline assembly
409   --disable-yasm           disable use of nasm/yasm assembly
410   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
411   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
412   --disable-msa            disable MSA optimizations
413   --disable-mipsfpu        disable floating point MIPS optimizations
414   --disable-mmi            disable Loongson SIMD optimizations
415   --disable-fast-unaligned consider unaligned accesses slow
416
417 Developer options (useful when working on FFmpeg itself):
418   --disable-debug          disable debugging symbols
419   --enable-debug=LEVEL     set the debug level [$debuglevel]
420   --disable-optimizations  disable compiler optimizations
421   --enable-extra-warnings  enable more compiler warnings
422   --disable-stripping      disable stripping of executables and shared libraries
423   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
424                            2 causes a slowdown at runtime.
425   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
426   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
427                            leaks and errors, using the specified valgrind binary.
428                            Cannot be combined with --target-exec
429   --enable-ftrapv          Trap arithmetic overflows
430   --samples=PATH           location of test samples for FATE, if not set use
431                            \$FATE_SAMPLES at make invocation time.
432   --enable-neon-clobber-test check NEON registers for clobbering (should be
433                            used only for debugging purposes)
434   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
435                            should be used only for debugging purposes)
436   --enable-random          randomly enable/disable components
437   --disable-random
438   --enable-random=LIST     randomly enable/disable specific components or
439   --disable-random=LIST    component groups. LIST is a comma-separated list
440                            of NAME[:PROB] entries where NAME is a component
441                            (group) and PROB the probability associated with
442                            NAME (default 0.5).
443   --random-seed=VALUE      seed value for --enable/disable-random
444   --disable-valgrind-backtrace do not print a backtrace under Valgrind
445                            (only applies to --disable-optimizations builds)
446
447 NOTE: Object files are built at the place where configure is launched.
448 EOF
449   exit 0
450 }
451
452 quotes='""'
453 if test -t 1 && which tput >/dev/null 2>&1; then
454     ncolors=$(tput colors)
455     if test -n "$ncolors" && test $ncolors -ge 8; then
456         bold_color=$(tput bold)
457         warn_color=$(tput setaf 3)
458         error_color=$(tput setaf 1)
459         reset_color=$(tput sgr0)
460     fi
461     # 72 used instead of 80 since that's the default of pr
462     ncols=$(tput cols)
463 fi
464 : ${ncols:=72}
465
466 log(){
467     echo "$@" >> $logfile
468 }
469
470 log_file(){
471     log BEGIN $1
472     pr -n -t $1 >> $logfile
473     log END $1
474 }
475
476 warn(){
477     log "WARNING: $*"
478     WARNINGS="${WARNINGS}WARNING: $*\n"
479 }
480
481 die(){
482     log "$@"
483     echo "$error_color$bold_color$@$reset_color"
484     cat <<EOF
485
486 If you think configure made a mistake, make sure you are using the latest
487 version from Git.  If the latest version fails, report the problem to the
488 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
489 EOF
490     if disabled logging; then
491         cat <<EOF
492 Rerun configure with logging enabled (do not use --disable-logging), and
493 include the log this produces with your report.
494 EOF
495     else
496         cat <<EOF
497 Include the log file "$logfile" produced by configure as this will help
498 solve the problem.
499 EOF
500     fi
501     exit 1
502 }
503
504 # Avoid locale weirdness, besides we really just want to translate ASCII.
505 toupper(){
506     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
507 }
508
509 tolower(){
510     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
511 }
512
513 c_escape(){
514     echo "$*" | sed 's/["\\]/\\\0/g'
515 }
516
517 sh_quote(){
518     v=$(echo "$1" | sed "s/'/'\\\\''/g")
519     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
520     echo "$v"
521 }
522
523 cleanws(){
524     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
525 }
526
527 filter(){
528     pat=$1
529     shift
530     for v; do
531         eval "case $v in $pat) echo $v ;; esac"
532     done
533 }
534
535 filter_out(){
536     pat=$1
537     shift
538     for v; do
539         eval "case $v in $pat) ;; *) echo $v ;; esac"
540     done
541 }
542
543 map(){
544     m=$1
545     shift
546     for v; do eval $m; done
547 }
548
549 add_suffix(){
550     suffix=$1
551     shift
552     for v; do echo ${v}${suffix}; done
553 }
554
555 set_all(){
556     value=$1
557     shift
558     for var in $*; do
559         eval $var=$value
560     done
561 }
562
563 set_weak(){
564     value=$1
565     shift
566     for var; do
567         eval : \${$var:=$value}
568     done
569 }
570
571 sanitize_var_name(){
572     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
573 }
574
575 set_safe(){
576     var=$1
577     shift
578     eval $(sanitize_var_name "$var")='$*'
579 }
580
581 get_safe(){
582     eval echo \$$(sanitize_var_name "$1")
583 }
584
585 pushvar(){
586     for pvar in $*; do
587         eval level=\${${pvar}_level:=0}
588         eval ${pvar}_${level}="\$$pvar"
589         eval ${pvar}_level=$(($level+1))
590     done
591 }
592
593 popvar(){
594     for pvar in $*; do
595         eval level=\${${pvar}_level:-0}
596         test $level = 0 && continue
597         eval level=$(($level-1))
598         eval $pvar="\${${pvar}_${level}}"
599         eval ${pvar}_level=$level
600         eval unset ${pvar}_${level}
601     done
602 }
603
604 enable(){
605     set_all yes $*
606 }
607
608 disable(){
609     set_all no $*
610 }
611
612 enable_weak(){
613     set_weak yes $*
614 }
615
616 disable_weak(){
617     set_weak no $*
618 }
619
620 enable_safe(){
621     for var; do
622         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
623     done
624 }
625
626 disable_safe(){
627     for var; do
628         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
629     done
630 }
631
632 do_enable_deep(){
633     for var; do
634         enabled $var && continue
635         eval sel="\$${var}_select"
636         eval sgs="\$${var}_suggest"
637         pushvar var sgs
638         enable_deep $sel
639         popvar sgs
640         enable_deep_weak $sgs
641         popvar var
642     done
643 }
644
645 enable_deep(){
646     do_enable_deep $*
647     enable $*
648 }
649
650 enable_deep_weak(){
651     for var; do
652         disabled $var && continue
653         pushvar var
654         do_enable_deep $var
655         popvar var
656         enable_weak $var
657     done
658 }
659
660 enabled(){
661     test "${1#!}" = "$1" && op='=' || op=!=
662     eval test "x\$${1#!}" $op "xyes"
663 }
664
665 disabled(){
666     test "${1#!}" = "$1" && op='=' || op=!=
667     eval test "x\$${1#!}" $op "xno"
668 }
669
670 enabled_all(){
671     for opt; do
672         enabled $opt || return 1
673     done
674 }
675
676 disabled_all(){
677     for opt; do
678         disabled $opt || return 1
679     done
680 }
681
682 enabled_any(){
683     for opt; do
684         enabled $opt && return 0
685     done
686 }
687
688 disabled_any(){
689     for opt; do
690         disabled $opt && return 0
691     done
692     return 1
693 }
694
695 set_default(){
696     for opt; do
697         eval : \${$opt:=\$${opt}_default}
698     done
699 }
700
701 is_in(){
702     value=$1
703     shift
704     for var in $*; do
705         [ $var = $value ] && return 0
706     done
707     return 1
708 }
709
710 do_check_deps(){
711     for cfg; do
712         cfg="${cfg#!}"
713         enabled ${cfg}_checking && die "Circular dependency for $cfg."
714         disabled ${cfg}_checking && continue
715         enable ${cfg}_checking
716         append allopts $cfg
717
718         eval dep_all="\$${cfg}_deps"
719         eval dep_any="\$${cfg}_deps_any"
720         eval dep_sel="\$${cfg}_select"
721         eval dep_sgs="\$${cfg}_suggest"
722         eval dep_ifa="\$${cfg}_if"
723         eval dep_ifn="\$${cfg}_if_any"
724
725         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
726         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
727         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
728
729         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
730         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
731         enabled_all  $dep_all || disable $cfg
732         enabled_any  $dep_any || disable $cfg
733         disabled_any $dep_sel && disable $cfg
734
735         if enabled $cfg; then
736             enable_deep $dep_sel
737             enable_deep_weak $dep_sgs
738         fi
739
740         disable ${cfg}_checking
741     done
742 }
743
744 check_deps(){
745     unset allopts
746
747     do_check_deps "$@"
748
749     for cfg in $allopts; do
750         enabled $cfg || continue
751         eval dep_extralibs="\$${cfg}_extralibs"
752         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
753     done
754 }
755
756 print_config(){
757     pfx=$1
758     files=$2
759     shift 2
760     map 'eval echo "$v \${$v:-no}"' "$@" |
761     awk "BEGIN { split(\"$files\", files) }
762         {
763             c = \"$pfx\" toupper(\$1);
764             v = \$2;
765             sub(/yes/, 1, v);
766             sub(/no/,  0, v);
767             for (f in files) {
768                 file = files[f];
769                 if (file ~ /\\.h\$/) {
770                     printf(\"#define %s %d\\n\", c, v) >>file;
771                 } else if (file ~ /\\.asm\$/) {
772                     printf(\"%%define %s %d\\n\", c, v) >>file;
773                 } else if (file ~ /\\.mak\$/) {
774                     n = -v ? \"\" : \"!\";
775                     printf(\"%s%s=yes\\n\", n, c) >>file;
776                 } else if (file ~ /\\.texi\$/) {
777                     pre = -v ? \"\" : \"@c \";
778                     yesno = \$2;
779                     c2 = tolower(c);
780                     gsub(/_/, \"-\", c2);
781                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
782                 }
783             }
784         }"
785 }
786
787 print_enabled(){
788     suf=$1
789     shift
790     for v; do
791         enabled $v && printf "%s\n" ${v%$suf}
792     done
793 }
794
795 append(){
796     var=$1
797     shift
798     eval "$var=\"\$$var $*\""
799 }
800
801 prepend(){
802     var=$1
803     shift
804     eval "$var=\"$* \$$var\""
805 }
806
807 unique(){
808     var=$1
809     uniq_list=""
810     for tok in $(eval echo \$$var); do
811         uniq_list="$(filter_out $tok $uniq_list) $tok"
812     done
813     eval "$var=\"${uniq_list}\""
814 }
815
816 add_cppflags(){
817     append CPPFLAGS "$@"
818 }
819
820 add_cflags(){
821     append CFLAGS $($cflags_filter "$@")
822 }
823
824 add_cxxflags(){
825     append CXXFLAGS $($cflags_filter "$@")
826 }
827
828 add_asflags(){
829     append ASFLAGS $($asflags_filter "$@")
830 }
831
832 add_objcflags(){
833     append OBJCFLAGS $($objcflags_filter "$@")
834 }
835
836 add_ldflags(){
837     append LDFLAGS $($ldflags_filter "$@")
838 }
839
840 add_ldexeflags(){
841     append LDEXEFLAGS $($ldflags_filter "$@")
842 }
843
844 add_ldlibflags(){
845     append LDLIBFLAGS $($ldflags_filter "$@")
846 }
847
848 add_stripflags(){
849     append ASMSTRIPFLAGS "$@"
850 }
851
852 add_extralibs(){
853     prepend extralibs $($ldflags_filter "$@")
854 }
855
856 add_host_cppflags(){
857     append host_cppflags "$@"
858 }
859
860 add_host_cflags(){
861     append host_cflags $($host_cflags_filter "$@")
862 }
863
864 add_host_ldflags(){
865     append host_ldflags $($host_ldflags_filter "$@")
866 }
867
868 add_compat(){
869     append compat_objs $1
870     shift
871     map 'add_cppflags -D$v' "$@"
872 }
873
874 check_cmd(){
875     log "$@"
876     "$@" >> $logfile 2>&1
877 }
878
879 check_stat(){
880     log check_stat "$@"
881     stat "$1" >> $logfile 2>&1
882 }
883
884 cc_o(){
885     eval printf '%s\\n' $CC_O
886 }
887
888 cc_e(){
889     eval printf '%s\\n' $CC_E
890 }
891
892 check_cc(){
893     log check_cc "$@"
894     cat > $TMPC
895     log_file $TMPC
896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
897 }
898
899 check_cxx(){
900     log check_cxx "$@"
901     cat > $TMPCPP
902     log_file $TMPCPP
903     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
904 }
905
906 check_objcc(){
907     log check_objcc "$@"
908     cat > $TMPM
909     log_file $TMPM
910     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
911 }
912
913 check_cpp(){
914     log check_cpp "$@"
915     cat > $TMPC
916     log_file $TMPC
917     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
918 }
919
920 as_o(){
921     eval printf '%s\\n' $AS_O
922 }
923
924 check_as(){
925     log check_as "$@"
926     cat > $TMPS
927     log_file $TMPS
928     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
929 }
930
931 check_inline_asm(){
932     log check_inline_asm "$@"
933     name="$1"
934     code="$2"
935     shift 2
936     disable $name
937     check_cc "$@" <<EOF && enable $name
938 void foo(void){ __asm__ volatile($code); }
939 EOF
940 }
941
942 check_inline_asm_flags(){
943     log check_inline_asm_flags "$@"
944     name="$1"
945     code="$2"
946     flags=''
947     shift 2
948     while [ "$1" != "" ]; do
949       append flags $1
950       shift
951     done;
952     disable $name
953     cat > $TMPC <<EOF
954 void foo(void){ __asm__ volatile($code); }
955 EOF
956     log_file $TMPC
957     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
958     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
959 }
960
961 check_insn(){
962     log check_insn "$@"
963     check_inline_asm ${1}_inline "\"$2\""
964     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
965 }
966
967 check_yasm(){
968     log check_yasm "$@"
969     echo "$1" > $TMPS
970     log_file $TMPS
971     shift 1
972     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
973 }
974
975 ld_o(){
976     eval printf '%s\\n' $LD_O
977 }
978
979 check_ld(){
980     log check_ld "$@"
981     type=$1
982     shift 1
983     flags=$(filter_out '-l*|*.so' $@)
984     libs=$(filter '-l*|*.so' $@)
985     check_$type $($cflags_filter $flags) || return
986     flags=$($ldflags_filter $flags)
987     libs=$($ldflags_filter $libs)
988     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
989 }
990
991 print_include(){
992     hdr=$1
993     test "${hdr%.h}" = "${hdr}" &&
994         echo "#include $hdr"    ||
995         echo "#include <$hdr>"
996 }
997
998 check_code(){
999     log check_code "$@"
1000     check=$1
1001     headers=$2
1002     code=$3
1003     shift 3
1004     {
1005         for hdr in $headers; do
1006             print_include $hdr
1007         done
1008         echo "int main(void) { $code; return 0; }"
1009     } | check_$check "$@"
1010 }
1011
1012 check_cppflags(){
1013     log check_cppflags "$@"
1014     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_cflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_cc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_cflags(){
1028     log check_cflags "$@"
1029     test_cflags "$@" && add_cflags "$@"
1030 }
1031
1032 check_cxxflags(){
1033     log check_cxxflags "$@"
1034     set -- $($cflags_filter "$@")
1035     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1036 int x;
1037 EOF
1038 }
1039
1040 test_objcflags(){
1041     log test_cflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_objcc "$@" <<EOF
1044 int x;
1045 EOF
1046 }
1047
1048 check_objcflags(){
1049     log check_cflags "$@"
1050     test_objcflags "$@" && add_objcflags "$@"
1051 }
1052
1053 test_ldflags(){
1054     log test_ldflags "$@"
1055     check_ld "cc" "$@" <<EOF
1056 int main(void){ return 0; }
1057 EOF
1058 }
1059
1060 check_ldflags(){
1061     log check_ldflags "$@"
1062     test_ldflags "$@" && add_ldflags "$@"
1063 }
1064
1065 test_stripflags(){
1066     log test_stripflags "$@"
1067     # call check_cc to get a fresh TMPO
1068     check_cc <<EOF
1069 int main(void) { return 0; }
1070 EOF
1071     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1072 }
1073
1074 check_stripflags(){
1075     log check_stripflags "$@"
1076     test_stripflags "$@" && add_stripflags "$@"
1077 }
1078
1079 check_header(){
1080     log check_header "$@"
1081     header=$1
1082     shift
1083     disable_safe $header
1084     check_cpp "$@" <<EOF && enable_safe $header
1085 #include <$header>
1086 int x;
1087 EOF
1088 }
1089
1090 check_header_objcc(){
1091     log check_header_objcc "$@"
1092     rm -f -- "$TMPO"
1093     header=$1
1094     shift
1095     disable_safe $header
1096     {
1097        echo "#include <$header>"
1098        echo "int main(void) { return 0; }"
1099     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1100 }
1101
1102 check_func(){
1103     log check_func "$@"
1104     func=$1
1105     shift
1106     disable $func
1107     check_ld "cc" "$@" <<EOF && enable $func
1108 extern int $func();
1109 int main(void){ $func(); }
1110 EOF
1111 }
1112
1113 check_complexfunc(){
1114     log check_complexfunc "$@"
1115     func=$1
1116     narg=$2
1117     shift 2
1118     test $narg = 2 && args="f, g" || args="f * I"
1119     disable $func
1120     check_ld "cc" "$@" <<EOF && enable $func
1121 #include <complex.h>
1122 #include <math.h>
1123 float foo(complex float f, complex float g) { return $func($args); }
1124 int main(void){ return (int) foo; }
1125 EOF
1126 }
1127
1128 check_mathfunc(){
1129     log check_mathfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <math.h>
1137 float foo(float f, float g) { return $func($args); }
1138 int main(void){ return (int) foo; }
1139 EOF
1140 }
1141
1142 check_func_headers(){
1143     log check_func_headers "$@"
1144     headers=$1
1145     funcs=$2
1146     shift 2
1147     {
1148         for hdr in $headers; do
1149             print_include $hdr
1150         done
1151         for func in $funcs; do
1152             echo "long check_$func(void) { return (long) $func; }"
1153         done
1154         echo "int main(void) { return 0; }"
1155     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_class_headers_cpp(){
1159     log check_class_headers_cpp "$@"
1160     headers=$1
1161     classes=$2
1162     shift 2
1163     {
1164         for hdr in $headers; do
1165             echo "#include <$hdr>"
1166         done
1167         echo "int main(void) { "
1168         i=1
1169         for class in $classes; do
1170             echo "$class obj$i;"
1171             i=$(expr $i + 1)
1172         done
1173         echo "return 0; }"
1174     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1175 }
1176
1177 check_cpp_condition(){
1178     log check_cpp_condition "$@"
1179     header=$1
1180     condition=$2
1181     shift 2
1182     check_cpp "$@" <<EOF
1183 #include <$header>
1184 #if !($condition)
1185 #error "unsatisfied condition: $condition"
1186 #endif
1187 EOF
1188 }
1189
1190 check_lib(){
1191     log check_lib "$@"
1192     header="$1"
1193     func="$2"
1194     shift 2
1195     check_header $header && check_func $func "$@" && add_extralibs "$@"
1196 }
1197
1198 check_lib2(){
1199     log check_lib2 "$@"
1200     headers="$1"
1201     funcs="$2"
1202     shift 2
1203     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1204 }
1205
1206 check_lib_cpp(){
1207     log check_lib_cpp "$@"
1208     headers="$1"
1209     classes="$2"
1210     shift 2
1211     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1212 }
1213
1214 check_pkg_config(){
1215     log check_pkg_config "$@"
1216     pkgandversion="$1"
1217     pkg="${1%% *}"
1218     headers="$2"
1219     funcs="$3"
1220     shift 3
1221     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1222     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1223     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1224     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1225         set_safe "${pkg}_cflags" $pkg_cflags   &&
1226         set_safe "${pkg}_libs"   $pkg_libs
1227 }
1228
1229 check_exec(){
1230     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1231 }
1232
1233 check_exec_crash(){
1234     code=$(cat)
1235
1236     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1237     # are safe but may not be available everywhere.  Thus we use
1238     # raise(SIGTERM) instead.  The check is run in a subshell so we
1239     # can redirect the "Terminated" message from the shell.  SIGBUS
1240     # is not defined by standard C so it is used conditionally.
1241
1242     (check_exec "$@") >> $logfile 2>&1 <<EOF
1243 #include <signal.h>
1244 static void sighandler(int sig){
1245     raise(SIGTERM);
1246 }
1247 int foo(void){
1248     $code
1249 }
1250 int (*func_ptr)(void) = foo;
1251 int main(void){
1252     signal(SIGILL, sighandler);
1253     signal(SIGFPE, sighandler);
1254     signal(SIGSEGV, sighandler);
1255 #ifdef SIGBUS
1256     signal(SIGBUS, sighandler);
1257 #endif
1258     return func_ptr();
1259 }
1260 EOF
1261 }
1262
1263 check_type(){
1264     log check_type "$@"
1265     headers=$1
1266     type=$2
1267     shift 2
1268     disable_safe "$type"
1269     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1270 }
1271
1272 check_struct(){
1273     log check_struct "$@"
1274     headers=$1
1275     struct=$2
1276     member=$3
1277     shift 3
1278     disable_safe "${struct}_${member}"
1279     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1280         enable_safe "${struct}_${member}"
1281 }
1282
1283 check_builtin(){
1284     log check_builtin "$@"
1285     name=$1
1286     headers=$2
1287     builtin=$3
1288     shift 3
1289     disable "$name"
1290     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1291 }
1292
1293 check_compile_assert(){
1294     log check_compile_assert "$@"
1295     name=$1
1296     headers=$2
1297     condition=$3
1298     shift 3
1299     disable "$name"
1300     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1301 }
1302
1303 require(){
1304     name="$1"
1305     header="$2"
1306     func="$3"
1307     shift 3
1308     check_lib $header $func "$@" || die "ERROR: $name not found"
1309 }
1310
1311 require2(){
1312     name="$1"
1313     headers="$2"
1314     func="$3"
1315     shift 3
1316     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1317 }
1318
1319 require_cpp(){
1320     name="$1"
1321     headers="$2"
1322     classes="$3"
1323     shift 3
1324     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1325 }
1326
1327 use_pkg_config(){
1328     pkg="$1"
1329     check_pkg_config "$@" || return 1
1330     add_cflags    $(get_safe "${pkg}_cflags")
1331     add_extralibs $(get_safe "${pkg}_libs")
1332 }
1333
1334 require_pkg_config(){
1335     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1336 }
1337
1338 require_libfreetype(){
1339     log require_libfreetype "$@"
1340     pkg="freetype2"
1341     check_cmd $pkg_config --exists --print-errors $pkg \
1342       || die "ERROR: $pkg not found"
1343     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1344     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1345     {
1346         echo "#include <ft2build.h>"
1347         echo "#include FT_FREETYPE_H"
1348         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1349         echo "int main(void) { return 0; }"
1350     } | check_ld "cc" $pkg_cflags $pkg_libs \
1351       && set_safe "${pkg}_cflags" $pkg_cflags \
1352       && set_safe "${pkg}_libs"   $pkg_libs \
1353       || die "ERROR: $pkg not found"
1354     add_cflags    $(get_safe "${pkg}_cflags")
1355     add_extralibs $(get_safe "${pkg}_libs")
1356 }
1357
1358 hostcc_e(){
1359     eval printf '%s\\n' $HOSTCC_E
1360 }
1361
1362 hostcc_o(){
1363     eval printf '%s\\n' $HOSTCC_O
1364 }
1365
1366 check_host_cc(){
1367     log check_host_cc "$@"
1368     cat > $TMPC
1369     log_file $TMPC
1370     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1371 }
1372
1373 check_host_cpp(){
1374     log check_host_cpp "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1378 }
1379
1380 check_host_cppflags(){
1381     log check_host_cppflags "$@"
1382     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1383 int x;
1384 EOF
1385 }
1386
1387 check_host_cflags(){
1388     log check_host_cflags "$@"
1389     set -- $($host_cflags_filter "$@")
1390     check_host_cc "$@" <<EOF && append host_cflags "$@"
1391 int x;
1392 EOF
1393 }
1394
1395 check_host_cpp_condition(){
1396     log check_host_cpp_condition "$@"
1397     header=$1
1398     condition=$2
1399     shift 2
1400     check_host_cpp "$@" <<EOF
1401 #include <$header>
1402 #if !($condition)
1403 #error "unsatisfied condition: $condition"
1404 #endif
1405 EOF
1406 }
1407
1408 cp_if_changed(){
1409     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1410     mkdir -p "$(dirname $2)"
1411     $cp_f "$1" "$2"
1412 }
1413
1414 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1415 # system-dependent things.
1416
1417 AVCODEC_COMPONENTS="
1418     bsfs
1419     decoders
1420     encoders
1421     hwaccels
1422     parsers
1423 "
1424
1425 AVDEVICE_COMPONENTS="
1426     indevs
1427     outdevs
1428 "
1429 AVFILTER_COMPONENTS="
1430     filters
1431 "
1432 AVFORMAT_COMPONENTS="
1433     demuxers
1434     muxers
1435     protocols
1436 "
1437
1438 AVRESAMPLE_COMPONENTS=""
1439 AVUTIL_COMPONENTS=""
1440
1441 COMPONENT_LIST="
1442     $AVCODEC_COMPONENTS
1443     $AVDEVICE_COMPONENTS
1444     $AVFILTER_COMPONENTS
1445     $AVFORMAT_COMPONENTS
1446     $AVRESAMPLE_COMPONENTS
1447     $AVUTIL_COMPONENTS
1448 "
1449
1450 EXAMPLE_LIST="
1451     avio_reading_example
1452     avio_dir_cmd_example
1453     decoding_encoding_example
1454     demuxing_decoding_example
1455     extract_mvs_example
1456     filter_audio_example
1457     filtering_audio_example
1458     filtering_video_example
1459     metadata_example
1460     muxing_example
1461     qsvdec_example
1462     remuxing_example
1463     resampling_audio_example
1464     scaling_video_example
1465     transcode_aac_example
1466     transcoding_example
1467 "
1468
1469 EXTERNAL_LIBRARY_LIST="
1470     avisynth
1471     bzlib
1472     chromaprint
1473     crystalhd
1474     decklink
1475     frei0r
1476     gcrypt
1477     gmp
1478     gnutls
1479     iconv
1480     jni
1481     ladspa
1482     libass
1483     libbluray
1484     libbs2b
1485     libcaca
1486     libcdio
1487     libcelt
1488     libdc1394
1489     libebur128
1490     libfaac
1491     libfdk_aac
1492     libflite
1493     libfontconfig
1494     libfreetype
1495     libfribidi
1496     libgme
1497     libgsm
1498     libiec61883
1499     libilbc
1500     libkvazaar
1501     libmodplug
1502     libmp3lame
1503     libnut
1504     libopencore_amrnb
1505     libopencore_amrwb
1506     libopencv
1507     libopenh264
1508     libopenjpeg
1509     libopenmpt
1510     libopus
1511     libpulse
1512     librtmp
1513     librubberband
1514     libschroedinger
1515     libshine
1516     libsmbclient
1517     libsnappy
1518     libsoxr
1519     libspeex
1520     libssh
1521     libtesseract
1522     libtheora
1523     libtwolame
1524     libv4l2
1525     libvidstab
1526     libvo_amrwbenc
1527     libvorbis
1528     libvpx
1529     libwavpack
1530     libwebp
1531     libx264
1532     libx265
1533     libxavs
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     libxvid
1539     libzimg
1540     libzmq
1541     libzvbi
1542     lzma
1543     mediacodec
1544     netcdf
1545     openal
1546     opencl
1547     opengl
1548     openssl
1549     schannel
1550     sdl
1551     securetransport
1552     videotoolbox
1553     x11grab
1554     xlib
1555     zlib
1556 "
1557
1558 HWACCEL_LIBRARY_LIST="
1559     audiotoolbox
1560     cuda
1561     cuvid
1562     d3d11va
1563     dxva2
1564     libmfx
1565     libnpp
1566     mmal
1567     nvenc
1568     omx
1569     vaapi
1570     vda
1571     vdpau
1572     videotoolbox_hwaccel
1573     xvmc
1574 "
1575
1576 DOCUMENT_LIST="
1577     doc
1578     htmlpages
1579     manpages
1580     podpages
1581     txtpages
1582 "
1583
1584 FEATURE_LIST="
1585     ftrapv
1586     gray
1587     hardcoded_tables
1588     omx_rpi
1589     runtime_cpudetect
1590     safe_bitstream_reader
1591     shared
1592     small
1593     static
1594     swscale_alpha
1595 "
1596
1597 LIBRARY_LIST="
1598     avcodec
1599     avdevice
1600     avfilter
1601     avformat
1602     avresample
1603     avutil
1604     postproc
1605     swresample
1606     swscale
1607 "
1608
1609 LICENSE_LIST="
1610     gpl
1611     nonfree
1612     version3
1613 "
1614
1615 PROGRAM_LIST="
1616     ffplay
1617     ffprobe
1618     ffserver
1619     ffmpeg
1620 "
1621
1622 SUBSYSTEM_LIST="
1623     dct
1624     dwt
1625     error_resilience
1626     faan
1627     fast_unaligned
1628     fft
1629     lsp
1630     lzo
1631     mdct
1632     pixelutils
1633     network
1634     rdft
1635 "
1636
1637 CONFIG_LIST="
1638     $COMPONENT_LIST
1639     $DOCUMENT_LIST
1640     $EXAMPLE_LIST
1641     $EXTERNAL_LIBRARY_LIST
1642     $HWACCEL_LIBRARY_LIST
1643     $FEATURE_LIST
1644     $LICENSE_LIST
1645     $LIBRARY_LIST
1646     $PROGRAM_LIST
1647     $SUBSYSTEM_LIST
1648     fontconfig
1649     incompatible_libav_abi
1650     memalign_hack
1651     memory_poisoning
1652     neon_clobber_test
1653     pic
1654     pod2man
1655     raise_major
1656     thumb
1657     valgrind_backtrace
1658     xmm_clobber_test
1659 "
1660
1661 THREADS_LIST="
1662     pthreads
1663     os2threads
1664     w32threads
1665 "
1666
1667 ATOMICS_LIST="
1668     atomics_gcc
1669     atomics_suncc
1670     atomics_win32
1671 "
1672
1673 ARCH_LIST="
1674     aarch64
1675     alpha
1676     arm
1677     avr32
1678     avr32_ap
1679     avr32_uc
1680     bfin
1681     ia64
1682     m68k
1683     mips
1684     mips64
1685     parisc
1686     ppc
1687     ppc64
1688     s390
1689     sh4
1690     sparc
1691     sparc64
1692     tilegx
1693     tilepro
1694     tomi
1695     x86
1696     x86_32
1697     x86_64
1698 "
1699
1700 ARCH_EXT_LIST_ARM="
1701     armv5te
1702     armv6
1703     armv6t2
1704     armv8
1705     neon
1706     vfp
1707     vfpv3
1708     setend
1709 "
1710
1711 ARCH_EXT_LIST_MIPS="
1712     mipsfpu
1713     mips32r2
1714     mips32r5
1715     mips64r2
1716     mips32r6
1717     mips64r6
1718     mipsdsp
1719     mipsdspr2
1720     msa
1721 "
1722
1723 ARCH_EXT_LIST_LOONGSON="
1724     loongson2
1725     loongson3
1726     mmi
1727 "
1728
1729 ARCH_EXT_LIST_X86_SIMD="
1730     aesni
1731     amd3dnow
1732     amd3dnowext
1733     avx
1734     avx2
1735     fma3
1736     fma4
1737     mmx
1738     mmxext
1739     sse
1740     sse2
1741     sse3
1742     sse4
1743     sse42
1744     ssse3
1745     xop
1746 "
1747
1748 ARCH_EXT_LIST_PPC="
1749     altivec
1750     dcbzl
1751     ldbrx
1752     power8
1753     ppc4xx
1754     vsx
1755 "
1756
1757 ARCH_EXT_LIST_X86="
1758     $ARCH_EXT_LIST_X86_SIMD
1759     cpunop
1760     i686
1761 "
1762
1763 ARCH_EXT_LIST="
1764     $ARCH_EXT_LIST_ARM
1765     $ARCH_EXT_LIST_PPC
1766     $ARCH_EXT_LIST_X86
1767     $ARCH_EXT_LIST_MIPS
1768     $ARCH_EXT_LIST_LOONGSON
1769 "
1770
1771 ARCH_FEATURES="
1772     aligned_stack
1773     fast_64bit
1774     fast_clz
1775     fast_cmov
1776     local_aligned_8
1777     local_aligned_16
1778     local_aligned_32
1779     simd_align_16
1780 "
1781
1782 BUILTIN_LIST="
1783     atomic_cas_ptr
1784     atomic_compare_exchange
1785     machine_rw_barrier
1786     MemoryBarrier
1787     mm_empty
1788     rdtsc
1789     sarestart
1790     sem_timedwait
1791     sync_val_compare_and_swap
1792 "
1793 HAVE_LIST_CMDLINE="
1794     inline_asm
1795     symver
1796     yasm
1797 "
1798
1799 HAVE_LIST_PUB="
1800     bigendian
1801     fast_unaligned
1802     incompatible_libav_abi
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     localtime_r
1925     lstat
1926     lzo1x_999_compress
1927     mach_absolute_time
1928     MapViewOfFile
1929     memalign
1930     mkstemp
1931     mmap
1932     mprotect
1933     nanosleep
1934     PeekNamedPipe
1935     posix_memalign
1936     pthread_cancel
1937     sched_getaffinity
1938     SetConsoleTextAttribute
1939     SetConsoleCtrlHandler
1940     setmode
1941     setrlimit
1942     Sleep
1943     strerror_r
1944     sysconf
1945     sysctl
1946     usleep
1947     UTGetOSTypeFromString
1948     VirtualAlloc
1949     wglGetProcAddress
1950 "
1951
1952 TOOLCHAIN_FEATURES="
1953     as_dn_directive
1954     as_func
1955     as_object_arch
1956     asm_mod_q
1957     attribute_may_alias
1958     attribute_packed
1959     ebp_available
1960     ebx_available
1961     gnu_as
1962     gnu_windres
1963     ibm_asm
1964     inline_asm_direct_symbol_refs
1965     inline_asm_labels
1966     inline_asm_nonlocal_labels
1967     pragma_deprecated
1968     rsync_contimeout
1969     symver_asm_label
1970     symver_gnu_asm
1971     vfp_args
1972     xform_asm
1973     xmm_clobbers
1974 "
1975
1976 TYPES_LIST="
1977     CONDITION_VARIABLE_Ptr
1978     socklen_t
1979     struct_addrinfo
1980     struct_group_source_req
1981     struct_ip_mreq_source
1982     struct_ipv6_mreq
1983     struct_msghdr_msg_flags
1984     struct_pollfd
1985     struct_rusage_ru_maxrss
1986     struct_sctp_event_subscribe
1987     struct_sockaddr_in6
1988     struct_sockaddr_sa_len
1989     struct_sockaddr_storage
1990     struct_stat_st_mtim_tv_nsec
1991     struct_v4l2_frmivalenum_discrete
1992 "
1993
1994 HAVE_LIST="
1995     $ARCH_EXT_LIST
1996     $(add_suffix _external $ARCH_EXT_LIST)
1997     $(add_suffix _inline   $ARCH_EXT_LIST)
1998     $ARCH_FEATURES
1999     $ATOMICS_LIST
2000     $BUILTIN_LIST
2001     $COMPLEX_FUNCS
2002     $HAVE_LIST_CMDLINE
2003     $HAVE_LIST_PUB
2004     $HEADERS_LIST
2005     $INTRINSICS_LIST
2006     $MATH_FUNCS
2007     $SYSTEM_FUNCS
2008     $THREADS_LIST
2009     $TOOLCHAIN_FEATURES
2010     $TYPES_LIST
2011     atomics_native
2012     dos_paths
2013     dxva2_lib
2014     dxva2api_cobj
2015     libc_msvcrt
2016     libdc1394_1
2017     libdc1394_2
2018     makeinfo
2019     makeinfo_html
2020     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2021     perl
2022     pod2man
2023     sdl
2024     section_data_rel_ro
2025     texi2html
2026     threads
2027     vaapi_drm
2028     vaapi_x11
2029     vdpau_x11
2030     winrt
2031     xlib
2032 "
2033
2034 # options emitted with CONFIG_ prefix but not available on the command line
2035 CONFIG_EXTRA="
2036     aandcttables
2037     ac3dsp
2038     audio_frame_queue
2039     audiodsp
2040     blockdsp
2041     bswapdsp
2042     cabac
2043     dirac_parse
2044     dvprofile
2045     exif
2046     faandct
2047     faanidct
2048     fdctdsp
2049     flacdsp
2050     fmtconvert
2051     frame_thread_encoder
2052     g722dsp
2053     golomb
2054     gplv3
2055     h263dsp
2056     h264chroma
2057     h264dsp
2058     h264pred
2059     h264qpel
2060     hpeldsp
2061     huffman
2062     huffyuvdsp
2063     huffyuvencdsp
2064     idctdsp
2065     iirfilter
2066     imdct15
2067     intrax8
2068     iso_media
2069     ividsp
2070     jpegtables
2071     lgplv3
2072     libx262
2073     llauddsp
2074     llviddsp
2075     lpc
2076     lzf
2077     me_cmp
2078     mpeg_er
2079     mpegaudio
2080     mpegaudiodsp
2081     mpegvideo
2082     mpegvideoenc
2083     mss34dsp
2084     pixblockdsp
2085     qpeldsp
2086     qsv
2087     qsvdec
2088     qsvenc
2089     rangecoder
2090     riffdec
2091     riffenc
2092     rtpdec
2093     rtpenc_chain
2094     rv34dsp
2095     sinewin
2096     snappy
2097     srtp
2098     startcode
2099     texturedsp
2100     texturedspenc
2101     tpeldsp
2102     vaapi_encode
2103     vc1dsp
2104     videodsp
2105     vp3dsp
2106     vp56dsp
2107     vp8dsp
2108     vt_bt2020
2109     wma_freqs
2110     wmv2dsp
2111 "
2112
2113 CMDLINE_SELECT="
2114     $ARCH_EXT_LIST
2115     $CONFIG_LIST
2116     $HAVE_LIST_CMDLINE
2117     $THREADS_LIST
2118     asm
2119     cross_compile
2120     debug
2121     extra_warnings
2122     logging
2123     lto
2124     optimizations
2125     rpath
2126     stripping
2127 "
2128
2129 PATHS_LIST="
2130     bindir
2131     datadir
2132     docdir
2133     incdir
2134     libdir
2135     mandir
2136     pkgconfigdir
2137     prefix
2138     shlibdir
2139     install_name_dir
2140 "
2141
2142 CMDLINE_SET="
2143     $PATHS_LIST
2144     ar
2145     arch
2146     as
2147     assert_level
2148     build_suffix
2149     cc
2150     objcc
2151     cpu
2152     cross_prefix
2153     custom_allocator
2154     cxx
2155     dep_cc
2156     doxygen
2157     env
2158     extra_version
2159     gas
2160     host_cc
2161     host_cflags
2162     host_ld
2163     host_ldflags
2164     host_libs
2165     host_os
2166     install
2167     ld
2168     ln_s
2169     logfile
2170     malloc_prefix
2171     nm
2172     optflags
2173     pkg_config
2174     pkg_config_flags
2175     progs_suffix
2176     random_seed
2177     ranlib
2178     samples
2179     strip
2180     sws_max_filter_size
2181     sysinclude
2182     sysroot
2183     target_exec
2184     target_os
2185     target_path
2186     target_samples
2187     tempprefix
2188     toolchain
2189     valgrind
2190     yasmexe
2191 "
2192
2193 CMDLINE_APPEND="
2194     extra_cflags
2195     extra_cxxflags
2196     extra_objcflags
2197     host_cppflags
2198 "
2199
2200 # code dependency declarations
2201
2202 # architecture extensions
2203
2204 armv5te_deps="arm"
2205 armv6_deps="arm"
2206 armv6t2_deps="arm"
2207 armv8_deps="aarch64"
2208 neon_deps_any="aarch64 arm"
2209 intrinsics_neon_deps="neon"
2210 vfp_deps_any="aarch64 arm"
2211 vfpv3_deps="vfp"
2212 setend_deps="arm"
2213
2214 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2215
2216 mipsfpu_deps="mips"
2217 mipsdsp_deps="mips"
2218 mipsdspr2_deps="mips"
2219 mips32r2_deps="mips"
2220 mips32r5_deps="mips"
2221 mips32r6_deps="mips"
2222 mips64r2_deps="mips"
2223 mips64r6_deps="mips"
2224 msa_deps="mipsfpu"
2225 mmi_deps="mips"
2226
2227 altivec_deps="ppc"
2228 dcbzl_deps="ppc"
2229 ldbrx_deps="ppc"
2230 ppc4xx_deps="ppc"
2231 vsx_deps="altivec"
2232 power8_deps="vsx"
2233
2234 cpunop_deps="i686"
2235 x86_64_select="i686"
2236 x86_64_suggest="fast_cmov"
2237
2238 amd3dnow_deps="mmx"
2239 amd3dnowext_deps="amd3dnow"
2240 i686_deps="x86"
2241 mmx_deps="x86"
2242 mmxext_deps="mmx"
2243 sse_deps="mmxext"
2244 sse2_deps="sse"
2245 sse3_deps="sse2"
2246 ssse3_deps="sse3"
2247 sse4_deps="ssse3"
2248 sse42_deps="sse4"
2249 aesni_deps="sse42"
2250 avx_deps="sse42"
2251 xop_deps="avx"
2252 fma3_deps="avx"
2253 fma4_deps="avx"
2254 avx2_deps="avx"
2255
2256 mmx_external_deps="yasm"
2257 mmx_inline_deps="inline_asm"
2258 mmx_suggest="mmx_external mmx_inline"
2259
2260 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2261     eval dep=\$${ext}_deps
2262     eval ${ext}_external_deps='"${dep}_external"'
2263     eval ${ext}_inline_deps='"${dep}_inline"'
2264     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2265 done
2266
2267 aligned_stack_if_any="aarch64 ppc x86"
2268 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2269 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2270 fast_unaligned_if_any="aarch64 ppc x86"
2271 simd_align_16_if_any="altivec neon sse"
2272
2273 # system capabilities
2274 symver_if_any="symver_asm_label symver_gnu_asm"
2275 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2276
2277 # threading support
2278 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2279 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2280 atomics_win32_if="MemoryBarrier"
2281 atomics_native_if_any="$ATOMICS_LIST"
2282 w32threads_deps="atomics_native"
2283 threads_if_any="$THREADS_LIST"
2284
2285 # subsystems
2286 dct_select="rdft"
2287 dirac_parse_select="golomb"
2288 error_resilience_select="me_cmp"
2289 faandct_deps="faan fdctdsp"
2290 faanidct_deps="faan idctdsp"
2291 h264dsp_select="startcode"
2292 frame_thread_encoder_deps="encoders threads"
2293 intrax8_select="blockdsp idctdsp"
2294 mdct_select="fft"
2295 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2296 mpeg_er_select="error_resilience"
2297 mpegaudio_select="mpegaudiodsp"
2298 mpegaudiodsp_select="dct"
2299 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2300 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2301 vc1dsp_select="h264chroma qpeldsp startcode"
2302 rdft_select="fft"
2303
2304 # decoders / encoders
2305 aac_decoder_select="imdct15 mdct sinewin"
2306 aac_fixed_decoder_select="mdct sinewin"
2307 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2308 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2309 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2310 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2311 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2312 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2313 adpcm_g722_decoder_select="g722dsp"
2314 adpcm_g722_encoder_select="g722dsp"
2315 aic_decoder_select="golomb idctdsp"
2316 alac_encoder_select="lpc"
2317 als_decoder_select="bswapdsp"
2318 amrnb_decoder_select="lsp"
2319 amrwb_decoder_select="lsp"
2320 amv_decoder_select="sp5x_decoder exif"
2321 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2322 ape_decoder_select="bswapdsp llauddsp"
2323 apng_decoder_select="zlib"
2324 apng_encoder_select="huffyuvencdsp zlib"
2325 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2326 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2327 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2328 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2329 atrac1_decoder_select="mdct sinewin"
2330 atrac3_decoder_select="mdct"
2331 atrac3p_decoder_select="mdct sinewin"
2332 avrn_decoder_select="exif jpegtables"
2333 bink_decoder_select="blockdsp hpeldsp"
2334 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2335 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2336 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2337 cllc_decoder_select="bswapdsp"
2338 comfortnoise_encoder_select="lpc"
2339 cook_decoder_select="audiodsp mdct sinewin"
2340 cscd_decoder_select="lzo"
2341 cscd_decoder_suggest="zlib"
2342 dca_decoder_select="mdct"
2343 dds_decoder_select="texturedsp"
2344 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2345 dnxhd_decoder_select="blockdsp idctdsp"
2346 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2347 dvvideo_decoder_select="dvprofile idctdsp"
2348 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2349 dxa_decoder_select="zlib"
2350 dxv_decoder_select="lzf texturedsp"
2351 eac3_decoder_select="ac3_decoder"
2352 eac3_encoder_select="ac3_encoder"
2353 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2354 eatgq_decoder_select="aandcttables"
2355 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2356 exr_decoder_select="zlib"
2357 ffv1_decoder_select="golomb rangecoder"
2358 ffv1_encoder_select="rangecoder"
2359 ffvhuff_decoder_select="huffyuv_decoder"
2360 ffvhuff_encoder_select="huffyuv_encoder"
2361 fic_decoder_select="golomb"
2362 flac_decoder_select="flacdsp golomb"
2363 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2364 flashsv2_decoder_select="zlib"
2365 flashsv2_encoder_select="zlib"
2366 flashsv_decoder_select="zlib"
2367 flashsv_encoder_select="zlib"
2368 flv_decoder_select="h263_decoder"
2369 flv_encoder_select="h263_encoder"
2370 fourxm_decoder_select="blockdsp bswapdsp"
2371 fraps_decoder_select="bswapdsp huffman"
2372 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2373 g729_decoder_select="audiodsp"
2374 h261_decoder_select="mpegvideo"
2375 h261_encoder_select="aandcttables mpegvideoenc"
2376 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2377 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2378 h263i_decoder_select="h263_decoder"
2379 h263p_decoder_select="h263_decoder"
2380 h263p_encoder_select="h263_encoder"
2381 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2382 h264_decoder_suggest="error_resilience"
2383 hap_decoder_select="snappy texturedsp"
2384 hap_encoder_deps="libsnappy"
2385 hap_encoder_select="texturedspenc"
2386 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2387 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2388 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2389 iac_decoder_select="imc_decoder"
2390 imc_decoder_select="bswapdsp fft mdct sinewin"
2391 indeo3_decoder_select="hpeldsp"
2392 indeo4_decoder_select="ividsp"
2393 indeo5_decoder_select="ividsp"
2394 interplay_video_decoder_select="hpeldsp"
2395 jpegls_decoder_select="golomb mjpeg_decoder"
2396 jpegls_encoder_select="golomb"
2397 jv_decoder_select="blockdsp"
2398 lagarith_decoder_select="huffyuvdsp"
2399 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2400 loco_decoder_select="golomb"
2401 magicyuv_decoder_select="huffyuvdsp"
2402 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2403 metasound_decoder_select="lsp mdct sinewin"
2404 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2405 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2406 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2407 mjpegb_decoder_select="mjpeg_decoder"
2408 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2409 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2410 mlp_decoder_select="mlp_parser"
2411 motionpixels_decoder_select="bswapdsp"
2412 mp1_decoder_select="mpegaudio"
2413 mp1float_decoder_select="mpegaudio"
2414 mp2_decoder_select="mpegaudio"
2415 mp2float_decoder_select="mpegaudio"
2416 mp3_decoder_select="mpegaudio"
2417 mp3adu_decoder_select="mpegaudio"
2418 mp3adufloat_decoder_select="mpegaudio"
2419 mp3float_decoder_select="mpegaudio"
2420 mp3on4_decoder_select="mpegaudio"
2421 mp3on4float_decoder_select="mpegaudio"
2422 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2423 mpc8_decoder_select="mpegaudiodsp"
2424 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2425 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2426 mpegvideo_decoder_select="mpegvideo"
2427 mpeg1video_decoder_select="mpegvideo"
2428 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2429 mpeg2video_decoder_select="mpegvideo"
2430 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2431 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2432 mpeg4_encoder_select="h263_encoder"
2433 msa1_decoder_select="mss34dsp"
2434 msmpeg4v1_decoder_select="h263_decoder"
2435 msmpeg4v2_decoder_select="h263_decoder"
2436 msmpeg4v2_encoder_select="h263_encoder"
2437 msmpeg4v3_decoder_select="h263_decoder"
2438 msmpeg4v3_encoder_select="h263_encoder"
2439 mss2_decoder_select="vc1_decoder mpegvideo"
2440 mts2_decoder_select="mss34dsp"
2441 mxpeg_decoder_select="mjpeg_decoder"
2442 nellymoser_decoder_select="mdct sinewin"
2443 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2444 nuv_decoder_select="idctdsp lzo"
2445 on2avc_decoder_select="mdct"
2446 opus_decoder_deps="swresample"
2447 opus_decoder_select="imdct15"
2448 png_decoder_select="zlib"
2449 png_encoder_select="huffyuvencdsp zlib"
2450 prores_decoder_select="blockdsp idctdsp"
2451 prores_encoder_select="fdctdsp"
2452 qcelp_decoder_select="lsp"
2453 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2454 ra_144_decoder_select="audiodsp"
2455 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2456 ralf_decoder_select="golomb"
2457 rawvideo_decoder_select="bswapdsp"
2458 rscc_decoder_select="zlib"
2459 rtjpeg_decoder_select="me_cmp"
2460 rv10_decoder_select="h263_decoder"
2461 rv10_encoder_select="h263_encoder"
2462 rv20_decoder_select="h263_decoder"
2463 rv20_encoder_select="h263_encoder"
2464 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2465 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2466 screenpresso_decoder_select="zlib"
2467 shorten_decoder_select="golomb"
2468 sipr_decoder_select="lsp"
2469 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2470 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2471 sonic_decoder_select="golomb rangecoder"
2472 sonic_encoder_select="golomb rangecoder"
2473 sonic_ls_encoder_select="golomb rangecoder"
2474 sp5x_decoder_select="mjpeg_decoder"
2475 svq1_decoder_select="hpeldsp"
2476 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2477 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2478 svq3_decoder_suggest="zlib"
2479 tak_decoder_select="audiodsp"
2480 tdsc_decoder_select="zlib mjpeg_decoder"
2481 theora_decoder_select="vp3_decoder"
2482 thp_decoder_select="mjpeg_decoder"
2483 tiff_decoder_suggest="zlib lzma"
2484 tiff_encoder_suggest="zlib"
2485 truehd_decoder_select="mlp_parser"
2486 truemotion2_decoder_select="bswapdsp"
2487 truespeech_decoder_select="bswapdsp"
2488 tscc_decoder_select="zlib"
2489 twinvq_decoder_select="mdct lsp sinewin"
2490 txd_decoder_select="texturedsp"
2491 utvideo_decoder_select="bswapdsp"
2492 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2493 vble_decoder_select="huffyuvdsp"
2494 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2495 vc1_qsv_decoder_deps="libmfx"
2496 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2497 vc1image_decoder_select="vc1_decoder"
2498 vorbis_decoder_select="mdct"
2499 vorbis_encoder_select="mdct"
2500 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2501 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2502 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2503 vp6a_decoder_select="vp6_decoder"
2504 vp6f_decoder_select="vp6_decoder"
2505 vp7_decoder_select="h264pred videodsp vp8dsp"
2506 vp8_decoder_select="h264pred videodsp vp8dsp"
2507 vp9_decoder_select="videodsp vp9_parser"
2508 webp_decoder_select="vp8_decoder exif"
2509 wmalossless_decoder_select="llauddsp"
2510 wmapro_decoder_select="mdct sinewin wma_freqs"
2511 wmav1_decoder_select="mdct sinewin wma_freqs"
2512 wmav1_encoder_select="mdct sinewin wma_freqs"
2513 wmav2_decoder_select="mdct sinewin wma_freqs"
2514 wmav2_encoder_select="mdct sinewin wma_freqs"
2515 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2516 wmv1_decoder_select="h263_decoder"
2517 wmv1_encoder_select="h263_encoder"
2518 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2519 wmv2_encoder_select="h263_encoder wmv2dsp"
2520 wmv3_decoder_select="vc1_decoder"
2521 wmv3image_decoder_select="wmv3_decoder"
2522 xma1_decoder_select="wmapro_decoder"
2523 xma2_decoder_select="wmapro_decoder"
2524 zerocodec_decoder_select="zlib"
2525 zlib_decoder_select="zlib"
2526 zlib_encoder_select="zlib"
2527 zmbv_decoder_select="zlib"
2528 zmbv_encoder_select="zlib"
2529
2530 # platform codecs
2531 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2532 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2533
2534 # hardware accelerators
2535 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2536 cuvid_deps="cuda"
2537 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2538 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2539 vaapi_deps="va_va_h"
2540 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2541 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2542 vda_deps="vda_framework pthreads"
2543 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2544 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2545 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2546 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2547 xvmc_deps="X11_extensions_XvMClib_h"
2548
2549 h263_vaapi_hwaccel_deps="vaapi"
2550 h263_vaapi_hwaccel_select="h263_decoder"
2551 h263_videotoolbox_hwaccel_deps="videotoolbox"
2552 h263_videotoolbox_hwaccel_select="h263_decoder"
2553 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2554 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2555 h264_d3d11va_hwaccel_deps="d3d11va"
2556 h264_d3d11va_hwaccel_select="h264_decoder"
2557 h264_dxva2_hwaccel_deps="dxva2"
2558 h264_dxva2_hwaccel_select="h264_decoder"
2559 h264_mediacodec_decoder_deps="mediacodec"
2560 h264_mediacodec_hwaccel_deps="mediacodec"
2561 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2562 h264_mmal_decoder_deps="mmal"
2563 h264_mmal_decoder_select="mmal"
2564 h264_mmal_hwaccel_deps="mmal"
2565 h264_omx_encoder_deps="omx"
2566 h264_qsv_hwaccel_deps="libmfx"
2567 h264_vaapi_hwaccel_deps="vaapi"
2568 h264_vaapi_hwaccel_select="h264_decoder"
2569 h264_vda_decoder_deps="vda"
2570 h264_vda_decoder_select="h264_decoder"
2571 h264_vda_hwaccel_deps="vda"
2572 h264_vda_hwaccel_select="h264_decoder"
2573 h264_vda_old_hwaccel_deps="vda"
2574 h264_vda_old_hwaccel_select="h264_decoder"
2575 h264_vdpau_decoder_deps="vdpau"
2576 h264_vdpau_decoder_select="h264_decoder"
2577 h264_vdpau_hwaccel_deps="vdpau"
2578 h264_vdpau_hwaccel_select="h264_decoder"
2579 h264_videotoolbox_hwaccel_deps="videotoolbox"
2580 h264_videotoolbox_hwaccel_select="h264_decoder"
2581 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2582 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2583 hevc_d3d11va_hwaccel_select="hevc_decoder"
2584 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2585 hevc_dxva2_hwaccel_select="hevc_decoder"
2586 hevc_qsv_hwaccel_deps="libmfx"
2587 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2588 hevc_vaapi_hwaccel_select="hevc_decoder"
2589 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2590 hevc_vdpau_hwaccel_select="hevc_decoder"
2591 mpeg_vdpau_decoder_deps="vdpau"
2592 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2593 mpeg_xvmc_hwaccel_deps="xvmc"
2594 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2595 mpeg1_vdpau_decoder_deps="vdpau"
2596 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2597 mpeg1_vdpau_hwaccel_deps="vdpau"
2598 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2599 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2600 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2601 mpeg1_xvmc_hwaccel_deps="xvmc"
2602 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2603 mpeg2_crystalhd_decoder_select="crystalhd"
2604 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2605 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2606 mpeg2_dxva2_hwaccel_deps="dxva2"
2607 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2608 mpeg2_mmal_decoder_deps="mmal"
2609 mpeg2_mmal_decoder_select="mmal"
2610 mpeg2_mmal_hwaccel_deps="mmal"
2611 mpeg2_qsv_hwaccel_deps="libmfx"
2612 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2613 mpeg2_vaapi_hwaccel_deps="vaapi"
2614 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2615 mpeg2_vdpau_hwaccel_deps="vdpau"
2616 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2618 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2619 mpeg2_xvmc_hwaccel_deps="xvmc"
2620 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2621 mpeg4_crystalhd_decoder_select="crystalhd"
2622 mpeg4_mmal_decoder_deps="mmal"
2623 mpeg4_mmal_decoder_select="mmal"
2624 mpeg4_mmal_hwaccel_deps="mmal"
2625 mpeg4_omx_encoder_deps="omx"
2626 mpeg4_vaapi_hwaccel_deps="vaapi"
2627 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2628 mpeg4_vdpau_decoder_deps="vdpau"
2629 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2630 mpeg4_vdpau_hwaccel_deps="vdpau"
2631 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2632 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2633 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2634 msmpeg4_crystalhd_decoder_select="crystalhd"
2635 vc1_crystalhd_decoder_select="crystalhd"
2636 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2637 vc1_d3d11va_hwaccel_deps="d3d11va"
2638 vc1_d3d11va_hwaccel_select="vc1_decoder"
2639 vc1_dxva2_hwaccel_deps="dxva2"
2640 vc1_dxva2_hwaccel_select="vc1_decoder"
2641 vc1_mmal_decoder_deps="mmal"
2642 vc1_mmal_decoder_select="mmal"
2643 vc1_mmal_hwaccel_deps="mmal"
2644 vc1_qsv_hwaccel_deps="libmfx"
2645 vc1_qsv_hwaccel_select="qsvdec_vc1"
2646 vc1_vaapi_hwaccel_deps="vaapi"
2647 vc1_vaapi_hwaccel_select="vc1_decoder"
2648 vc1_vdpau_decoder_deps="vdpau"
2649 vc1_vdpau_decoder_select="vc1_decoder"
2650 vc1_vdpau_hwaccel_deps="vdpau"
2651 vc1_vdpau_hwaccel_select="vc1_decoder"
2652 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2653 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2654 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2655 vp9_d3d11va_hwaccel_select="vp9_decoder"
2656 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2657 vp9_dxva2_hwaccel_select="vp9_decoder"
2658 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2659 vp9_vaapi_hwaccel_select="vp9_decoder"
2660 wmv3_crystalhd_decoder_select="crystalhd"
2661 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2662 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2663 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2664 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2665 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2666
2667 # hardware-accelerated codecs
2668 omx_deps="dlopen pthreads"
2669 omx_extralibs='$ldl'
2670 qsvdec_select="qsv"
2671 qsvenc_select="qsv"
2672 vaapi_encode_deps="vaapi"
2673
2674 hwupload_cuda_filter_deps="cuda"
2675 scale_npp_filter_deps="cuda libnpp"
2676
2677 nvenc_encoder_deps="nvenc"
2678 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2679 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2680 h264_nvenc_encoder_deps="nvenc"
2681 h264_qsv_decoder_deps="libmfx"
2682 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2683 h264_qsv_encoder_deps="libmfx"
2684 h264_qsv_encoder_select="qsvenc"
2685 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2686 h264_vaapi_encoder_select="vaapi_encode golomb"
2687
2688 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2689 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2690 hevc_nvenc_encoder_deps="nvenc"
2691 hevc_qsv_decoder_deps="libmfx"
2692 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2693 hevc_qsv_encoder_deps="libmfx"
2694 hevc_qsv_encoder_select="qsvenc"
2695 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2696 hevc_vaapi_encoder_select="vaapi_encode golomb"
2697 mpeg2_qsv_decoder_deps="libmfx"
2698 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2699 mpeg2_qsv_encoder_deps="libmfx"
2700 mpeg2_qsv_encoder_select="qsvenc"
2701 nvenc_h264_encoder_deps="nvenc"
2702 nvenc_hevc_encoder_deps="nvenc"
2703
2704 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2705 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2706 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2707 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2708 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2709 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2710
2711 # parsers
2712 h264_parser_select="golomb h264dsp"
2713 hevc_parser_select="golomb"
2714 mpegvideo_parser_select="mpegvideo"
2715 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2716 vc1_parser_select="vc1dsp"
2717
2718 # bitstream_filters
2719 mjpeg2jpeg_bsf_select="jpegtables"
2720
2721 # external libraries
2722 aac_at_decoder_deps="audiotoolbox"
2723 ac3_at_decoder_deps="audiotoolbox"
2724 ac3_at_decoder_select="ac3_parser"
2725 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2726 alac_at_decoder_deps="audiotoolbox"
2727 amr_nb_at_decoder_deps="audiotoolbox"
2728 eac3_at_decoder_deps="audiotoolbox"
2729 eac3_at_decoder_select="ac3_parser"
2730 gsm_ms_at_decoder_deps="audiotoolbox"
2731 ilbc_at_decoder_deps="audiotoolbox"
2732 mp1_at_decoder_deps="audiotoolbox"
2733 mp2_at_decoder_deps="audiotoolbox"
2734 mp3_at_decoder_deps="audiotoolbox"
2735 pcm_alaw_at_decoder_deps="audiotoolbox"
2736 pcm_mulaw_at_decoder_deps="audiotoolbox"
2737 qdmc_at_decoder_deps="audiotoolbox"
2738 qdm2_at_decoder_deps="audiotoolbox"
2739 aac_at_encoder_deps="audiotoolbox"
2740 aac_at_encoder_select="audio_frame_queue"
2741 alac_at_encoder_deps="audiotoolbox"
2742 alac_at_encoder_select="audio_frame_queue"
2743 ilbc_at_encoder_deps="audiotoolbox"
2744 ilbc_at_encoder_select="audio_frame_queue"
2745 pcm_alaw_at_encoder_deps="audiotoolbox"
2746 pcm_alaw_at_encoder_select="audio_frame_queue"
2747 pcm_mulaw_at_encoder_deps="audiotoolbox"
2748 pcm_mulaw_at_encoder_select="audio_frame_queue"
2749 chromaprint_muxer_deps="chromaprint"
2750 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2751 libcelt_decoder_deps="libcelt"
2752 libfaac_encoder_deps="libfaac"
2753 libfaac_encoder_select="audio_frame_queue"
2754 libfdk_aac_decoder_deps="libfdk_aac"
2755 libfdk_aac_encoder_deps="libfdk_aac"
2756 libfdk_aac_encoder_select="audio_frame_queue"
2757 libgme_demuxer_deps="libgme"
2758 libgsm_decoder_deps="libgsm"
2759 libgsm_encoder_deps="libgsm"
2760 libgsm_ms_decoder_deps="libgsm"
2761 libgsm_ms_encoder_deps="libgsm"
2762 libilbc_decoder_deps="libilbc"
2763 libilbc_encoder_deps="libilbc"
2764 libkvazaar_encoder_deps="libkvazaar"
2765 libmodplug_demuxer_deps="libmodplug"
2766 libmp3lame_encoder_deps="libmp3lame"
2767 libmp3lame_encoder_select="audio_frame_queue"
2768 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2769 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2770 libopencore_amrnb_encoder_select="audio_frame_queue"
2771 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2772 libopenh264_encoder_deps="libopenh264"
2773 libopenjpeg_decoder_deps="libopenjpeg"
2774 libopenjpeg_encoder_deps="libopenjpeg"
2775 libopenmpt_demuxer_deps="libopenmpt"
2776 libopus_decoder_deps="libopus"
2777 libopus_encoder_deps="libopus"
2778 libopus_encoder_select="audio_frame_queue"
2779 libschroedinger_decoder_deps="libschroedinger"
2780 libschroedinger_encoder_deps="libschroedinger"
2781 libshine_encoder_deps="libshine"
2782 libshine_encoder_select="audio_frame_queue"
2783 libspeex_decoder_deps="libspeex"
2784 libspeex_encoder_deps="libspeex"
2785 libspeex_encoder_select="audio_frame_queue"
2786 libtheora_encoder_deps="libtheora"
2787 libtwolame_encoder_deps="libtwolame"
2788 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2789 libvorbis_decoder_deps="libvorbis"
2790 libvorbis_encoder_deps="libvorbis"
2791 libvorbis_encoder_select="audio_frame_queue"
2792 libvpx_vp8_decoder_deps="libvpx"
2793 libvpx_vp8_encoder_deps="libvpx"
2794 libvpx_vp9_decoder_deps="libvpx"
2795 libvpx_vp9_encoder_deps="libvpx"
2796 libwavpack_encoder_deps="libwavpack"
2797 libwebp_encoder_deps="libwebp"
2798 libwebp_anim_encoder_deps="libwebp"
2799 libx262_encoder_deps="libx262"
2800 libx264_encoder_deps="libx264"
2801 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2802 libx264rgb_encoder_select="libx264_encoder"
2803 libx265_encoder_deps="libx265"
2804 libxavs_encoder_deps="libxavs"
2805 libxvid_encoder_deps="libxvid"
2806 libzvbi_teletext_decoder_deps="libzvbi"
2807 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2808 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2809 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2810 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2811 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2812
2813 # demuxers / muxers
2814 ac3_demuxer_select="ac3_parser"
2815 asf_demuxer_select="riffdec"
2816 asf_o_demuxer_select="riffdec"
2817 asf_muxer_select="riffenc"
2818 asf_stream_muxer_select="asf_muxer"
2819 avi_demuxer_select="iso_media riffdec exif"
2820 avi_muxer_select="riffenc"
2821 avisynth_demuxer_deps="avisynth"
2822 avisynth_demuxer_select="riffdec"
2823 caf_demuxer_select="iso_media riffdec"
2824 dash_muxer_select="mp4_muxer"
2825 dirac_demuxer_select="dirac_parser"
2826 dts_demuxer_select="dca_parser"
2827 dtshd_demuxer_select="dca_parser"
2828 dv_demuxer_select="dvprofile"
2829 dv_muxer_select="dvprofile"
2830 dxa_demuxer_select="riffdec"
2831 eac3_demuxer_select="ac3_parser"
2832 f4v_muxer_select="mov_muxer"
2833 flac_demuxer_select="flac_parser"
2834 hds_muxer_select="flv_muxer"
2835 hls_muxer_select="mpegts_muxer"
2836 image2_alias_pix_demuxer_select="image2_demuxer"
2837 image2_brender_pix_demuxer_select="image2_demuxer"
2838 ipod_muxer_select="mov_muxer"
2839 ismv_muxer_select="mov_muxer"
2840 libnut_demuxer_deps="libnut"
2841 libnut_muxer_deps="libnut"
2842 matroska_audio_muxer_select="matroska_muxer"
2843 matroska_demuxer_select="iso_media riffdec"
2844 matroska_demuxer_suggest="bzlib lzo zlib"
2845 matroska_muxer_select="iso_media riffenc"
2846 mmf_muxer_select="riffenc"
2847 mov_demuxer_select="iso_media riffdec"
2848 mov_demuxer_suggest="zlib"
2849 mov_muxer_select="iso_media riffenc rtpenc_chain"
2850 mp3_demuxer_select="mpegaudio_parser"
2851 mp4_muxer_select="mov_muxer"
2852 mpegts_demuxer_select="iso_media"
2853 mpegts_muxer_select="adts_muxer latm_muxer"
2854 mpegtsraw_demuxer_select="mpegts_demuxer"
2855 mxf_d10_muxer_select="mxf_muxer"
2856 mxf_opatom_muxer_select="mxf_muxer"
2857 nut_muxer_select="riffenc"
2858 nuv_demuxer_select="riffdec"
2859 oga_muxer_select="ogg_muxer"
2860 ogg_demuxer_select="dirac_parse"
2861 opus_muxer_select="ogg_muxer"
2862 psp_muxer_select="mov_muxer"
2863 rtp_demuxer_select="sdp_demuxer"
2864 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2865 rtsp_demuxer_select="http_protocol rtpdec"
2866 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2867 sap_demuxer_select="sdp_demuxer"
2868 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2869 sdp_demuxer_select="rtpdec"
2870 smoothstreaming_muxer_select="ismv_muxer"
2871 spdif_muxer_select="aac_parser"
2872 spx_muxer_select="ogg_muxer"
2873 swf_demuxer_suggest="zlib"
2874 tak_demuxer_select="tak_parser"
2875 tg2_muxer_select="mov_muxer"
2876 tgp_muxer_select="mov_muxer"
2877 vobsub_demuxer_select="mpegps_demuxer"
2878 w64_demuxer_select="wav_demuxer"
2879 w64_muxer_select="wav_muxer"
2880 wav_demuxer_select="riffdec"
2881 wav_muxer_select="riffenc"
2882 webm_muxer_select="iso_media riffenc"
2883 webm_dash_manifest_demuxer_select="matroska_demuxer"
2884 wtv_demuxer_select="mpegts_demuxer riffdec"
2885 wtv_muxer_select="mpegts_muxer riffenc"
2886 xmv_demuxer_select="riffdec"
2887 xwma_demuxer_select="riffdec"
2888
2889 # indevs / outdevs
2890 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2891 alsa_outdev_deps="alsa_asoundlib_h"
2892 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2893 avfoundation_indev_select="avfoundation"
2894 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2895 caca_outdev_deps="libcaca"
2896 decklink_indev_deps="decklink pthreads"
2897 decklink_indev_extralibs="-lstdc++"
2898 decklink_outdev_deps="decklink pthreads"
2899 decklink_outdev_extralibs="-lstdc++"
2900 dshow_indev_deps="IBaseFilter"
2901 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2902 dv1394_indev_deps="dv1394"
2903 dv1394_indev_select="dv_demuxer"
2904 fbdev_indev_deps="linux_fb_h"
2905 fbdev_outdev_deps="linux_fb_h"
2906 gdigrab_indev_deps="CreateDIBSection"
2907 gdigrab_indev_extralibs="-lgdi32"
2908 gdigrab_indev_select="bmp_decoder"
2909 iec61883_indev_deps="libiec61883"
2910 jack_indev_deps="jack_jack_h"
2911 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2912 lavfi_indev_deps="avfilter"
2913 libcdio_indev_deps="libcdio"
2914 libdc1394_indev_deps="libdc1394"
2915 libv4l2_indev_deps="libv4l2"
2916 openal_indev_deps="openal"
2917 opengl_outdev_deps="opengl"
2918 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2919 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2920 pulse_indev_deps="libpulse"
2921 pulse_outdev_deps="libpulse"
2922 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2923 qtkit_indev_select="qtkit"
2924 sdl_outdev_deps="sdl"
2925 sndio_indev_deps="sndio_h"
2926 sndio_outdev_deps="sndio_h"
2927 v4l_indev_deps="linux_videodev_h"
2928 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2929 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2930 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2931 vfwcap_indev_extralibs="-lavicap32"
2932 x11grab_indev_deps="x11grab"
2933 x11grab_xcb_indev_deps="libxcb"
2934 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2935 xv_outdev_extralibs="-lXv -lX11 -lXext"
2936
2937 # protocols
2938 async_protocol_deps="threads"
2939 bluray_protocol_deps="libbluray"
2940 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2941 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2942 ffrtmpcrypt_protocol_select="tcp_protocol"
2943 ffrtmphttp_protocol_deps="!librtmp_protocol"
2944 ffrtmphttp_protocol_select="http_protocol"
2945 ftp_protocol_select="tcp_protocol"
2946 gopher_protocol_select="network"
2947 http_protocol_select="tcp_protocol"
2948 httpproxy_protocol_select="tcp_protocol"
2949 https_protocol_select="tls_protocol"
2950 icecast_protocol_select="http_protocol"
2951 librtmp_protocol_deps="librtmp"
2952 librtmpe_protocol_deps="librtmp"
2953 librtmps_protocol_deps="librtmp"
2954 librtmpt_protocol_deps="librtmp"
2955 librtmpte_protocol_deps="librtmp"
2956 libsmbclient_protocol_deps="libsmbclient gplv3"
2957 libssh_protocol_deps="libssh"
2958 mmsh_protocol_select="http_protocol"
2959 mmst_protocol_select="network"
2960 rtmp_protocol_deps="!librtmp_protocol"
2961 rtmp_protocol_select="tcp_protocol"
2962 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2963 rtmps_protocol_deps="!librtmp_protocol"
2964 rtmps_protocol_select="tls_protocol"
2965 rtmpt_protocol_select="ffrtmphttp_protocol"
2966 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2967 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2968 rtp_protocol_select="udp_protocol"
2969 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2970 sctp_protocol_select="network"
2971 srtp_protocol_select="rtp_protocol srtp"
2972 tcp_protocol_select="network"
2973 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2974 tls_gnutls_protocol_select="tcp_protocol"
2975 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2976 tls_openssl_protocol_select="tcp_protocol"
2977 tls_schannel_protocol_deps="schannel"
2978 tls_schannel_protocol_select="tcp_protocol"
2979 tls_securetransport_protocol_deps="securetransport"
2980 tls_securetransport_protocol_select="tcp_protocol"
2981 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2982 udp_protocol_select="network"
2983 udplite_protocol_select="network"
2984 unix_protocol_deps="sys_un_h"
2985 unix_protocol_select="network"
2986
2987 # filters
2988 afftfilt_filter_deps="avcodec"
2989 afftfilt_filter_select="fft"
2990 amovie_filter_deps="avcodec avformat"
2991 aresample_filter_deps="swresample"
2992 ass_filter_deps="libass"
2993 asyncts_filter_deps="avresample"
2994 atempo_filter_deps="avcodec"
2995 atempo_filter_select="rdft"
2996 azmq_filter_deps="libzmq"
2997 blackframe_filter_deps="gpl"
2998 boxblur_filter_deps="gpl"
2999 bs2b_filter_deps="libbs2b"
3000 colormatrix_filter_deps="gpl"
3001 cover_rect_filter_deps="avcodec avformat gpl"
3002 cropdetect_filter_deps="gpl"
3003 delogo_filter_deps="gpl"
3004 deshake_filter_select="pixelutils"
3005 drawtext_filter_deps="libfreetype"
3006 ebur128_filter_deps="gpl"
3007 eq_filter_deps="gpl"
3008 fftfilt_filter_deps="avcodec"
3009 fftfilt_filter_select="rdft"
3010 find_rect_filter_deps="avcodec avformat gpl"
3011 firequalizer_filter_deps="avcodec"
3012 firequalizer_filter_select="rdft"
3013 flite_filter_deps="libflite"
3014 framerate_filter_select="pixelutils"
3015 frei0r_filter_deps="frei0r dlopen"
3016 frei0r_src_filter_deps="frei0r dlopen"
3017 fspp_filter_deps="gpl"
3018 geq_filter_deps="gpl"
3019 histeq_filter_deps="gpl"
3020 hqdn3d_filter_deps="gpl"
3021 interlace_filter_deps="gpl"
3022 kerndeint_filter_deps="gpl"
3023 ladspa_filter_deps="ladspa dlopen"
3024 loudnorm_filter_deps="libebur128"
3025 mcdeint_filter_deps="avcodec gpl"
3026 movie_filter_deps="avcodec avformat"
3027 mpdecimate_filter_deps="gpl"
3028 mpdecimate_filter_select="pixelutils"
3029 mptestsrc_filter_deps="gpl"
3030 negate_filter_deps="lut_filter"
3031 nnedi_filter_deps="gpl"
3032 ocr_filter_deps="libtesseract"
3033 ocv_filter_deps="libopencv"
3034 owdenoise_filter_deps="gpl"
3035 pan_filter_deps="swresample"
3036 perspective_filter_deps="gpl"
3037 phase_filter_deps="gpl"
3038 pp7_filter_deps="gpl"
3039 pp_filter_deps="gpl postproc"
3040 pullup_filter_deps="gpl"
3041 removelogo_filter_deps="avcodec avformat swscale"
3042 repeatfields_filter_deps="gpl"
3043 resample_filter_deps="avresample"
3044 rubberband_filter_deps="librubberband"
3045 sab_filter_deps="gpl swscale"
3046 scale2ref_filter_deps="swscale"
3047 scale_filter_deps="swscale"
3048 select_filter_select="pixelutils"
3049 showcqt_filter_deps="avcodec avformat swscale"
3050 showcqt_filter_select="fft"
3051 showfreqs_filter_deps="avcodec"
3052 showfreqs_filter_select="fft"
3053 showspectrum_filter_deps="avcodec"
3054 showspectrum_filter_select="fft"
3055 showspectrumpic_filter_deps="avcodec"
3056 showspectrumpic_filter_select="fft"
3057 smartblur_filter_deps="gpl swscale"
3058 sofalizer_filter_deps="netcdf avcodec"
3059 sofalizer_filter_select="fft"
3060 spectrumsynth_filter_deps="avcodec"
3061 spectrumsynth_filter_select="fft"
3062 spp_filter_deps="gpl avcodec"
3063 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3064 stereo3d_filter_deps="gpl"
3065 subtitles_filter_deps="avformat avcodec libass"
3066 super2xsai_filter_deps="gpl"
3067 pixfmts_super2xsai_test_deps="super2xsai_filter"
3068 tinterlace_filter_deps="gpl"
3069 tinterlace_merge_test_deps="tinterlace_filter"
3070 tinterlace_pad_test_deps="tinterlace_filter"
3071 uspp_filter_deps="gpl avcodec"
3072 vidstabdetect_filter_deps="libvidstab"
3073 vidstabtransform_filter_deps="libvidstab"
3074 zmq_filter_deps="libzmq"
3075 zoompan_filter_deps="swscale"
3076 zscale_filter_deps="libzimg"
3077 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3078
3079 # examples
3080 avcodec_example_deps="avcodec avutil"
3081 avio_dir_cmd="avformat avutil"
3082 avio_reading="avformat avcodec avutil"
3083 decoding_encoding_example_deps="avcodec avformat avutil"
3084 demuxing_decoding_example_deps="avcodec avformat avutil"
3085 extract_mvs_example_deps="avcodec avformat avutil"
3086 filter_audio_example_deps="avfilter avutil"
3087 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3088 filtering_video_example_deps="avfilter avcodec avformat avutil"
3089 metadata_example_deps="avformat avutil"
3090 muxing_example_deps="avcodec avformat avutil swscale"
3091 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3092 remuxing_example_deps="avcodec avformat avutil"
3093 resampling_audio_example_deps="avutil swresample"
3094 scaling_video_example_deps="avutil swscale"
3095 transcode_aac_example_deps="avcodec avformat swresample"
3096 transcoding_example_deps="avfilter avcodec avformat avutil"
3097
3098 # libraries, in linking order
3099 avcodec_deps="avutil"
3100 avdevice_deps="avformat avcodec avutil"
3101 avfilter_deps="avutil"
3102 avformat_deps="avcodec avutil"
3103 avresample_deps="avutil"
3104 postproc_deps="avutil gpl"
3105 swresample_deps="avutil"
3106 swscale_deps="avutil"
3107
3108 # programs
3109 ffmpeg_deps="avcodec avfilter avformat swresample"
3110 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3111                null_filter
3112                setpts_filter trim_filter"
3113 ffplay_deps="avcodec avformat swscale swresample sdl"
3114 ffplay_libs='$sdl_libs'
3115 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3116 ffprobe_deps="avcodec avformat"
3117 ffserver_deps="avformat fork sarestart"
3118 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3119
3120 # documentation
3121 podpages_deps="perl"
3122 manpages_deps="perl pod2man"
3123 htmlpages_deps="perl"
3124 htmlpages_deps_any="makeinfo_html texi2html"
3125 txtpages_deps="perl makeinfo"
3126 doc_deps_any="manpages htmlpages podpages txtpages"
3127
3128 # default parameters
3129
3130 logfile="config.log"
3131
3132 # installation paths
3133 prefix_default="/usr/local"
3134 bindir_default='${prefix}/bin'
3135 datadir_default='${prefix}/share/ffmpeg'
3136 docdir_default='${prefix}/share/doc/ffmpeg'
3137 incdir_default='${prefix}/include'
3138 libdir_default='${prefix}/lib'
3139 mandir_default='${prefix}/share/man'
3140
3141 # toolchain
3142 ar_default="ar"
3143 cc_default="gcc"
3144 cxx_default="g++"
3145 host_cc_default="gcc"
3146 cp_f="cp -f"
3147 doxygen_default="doxygen"
3148 install="install"
3149 ln_s_default="ln -s -f"
3150 nm_default="nm -g"
3151 objformat="elf"
3152 pkg_config_default=pkg-config
3153 ranlib_default="ranlib"
3154 strip_default="strip"
3155 version_script='--version-script'
3156 yasmexe_default="yasm"
3157 windres_default="windres"
3158
3159 # OS
3160 target_os_default=$(tolower $(uname -s))
3161 host_os=$target_os_default
3162
3163 # machine
3164 if test "$target_os_default" = aix; then
3165     arch_default=$(uname -p)
3166     strip_default="strip -X32_64"
3167 else
3168     arch_default=$(uname -m)
3169 fi
3170 cpu="generic"
3171 intrinsics="none"
3172
3173 # configurable options
3174 enable $PROGRAM_LIST
3175 enable $DOCUMENT_LIST
3176 enable $EXAMPLE_LIST
3177 enable $(filter_out avresample $LIBRARY_LIST)
3178 enable stripping
3179
3180 enable asm
3181 enable debug
3182 enable doc
3183 enable faan faandct faanidct
3184 enable optimizations
3185 enable runtime_cpudetect
3186 enable safe_bitstream_reader
3187 enable static
3188 enable swscale_alpha
3189 enable valgrind_backtrace
3190
3191 sws_max_filter_size_default=256
3192 set_default sws_max_filter_size
3193
3194 # Enable platform codecs by default.
3195 enable audiotoolbox
3196
3197 # Enable hwaccels by default.
3198 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3199 enable xlib
3200
3201 enable vda_framework videotoolbox videotoolbox_encoder
3202
3203 # build settings
3204 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3205 LIBPREF="lib"
3206 LIBSUF=".a"
3207 FULLNAME='$(NAME)$(BUILDSUF)'
3208 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3209 SLIBPREF="lib"
3210 SLIBSUF=".so"
3211 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3212 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3213 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3214 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3215 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3216 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3217 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3218
3219 asflags_filter=echo
3220 cflags_filter=echo
3221 ldflags_filter=echo
3222
3223 AS_C='-c'
3224 AS_O='-o $@'
3225 CC_C='-c'
3226 CC_E='-E -o $@'
3227 CC_O='-o $@'
3228 CXX_C='-c'
3229 CXX_O='-o $@'
3230 OBJCC_C='-c'
3231 OBJCC_E='-E -o $@'
3232 OBJCC_O='-o $@'
3233 LD_O='-o $@'
3234 LD_LIB='-l%'
3235 LD_PATH='-L'
3236 HOSTCC_C='-c'
3237 HOSTCC_E='-E -o $@'
3238 HOSTCC_O='-o $@'
3239 HOSTLD_O='-o $@'
3240
3241 host_libs='-lm'
3242 host_cflags_filter=echo
3243 host_ldflags_filter=echo
3244
3245 target_path='$(CURDIR)'
3246
3247 # since the object filename is not given with the -MM flag, the compiler
3248 # is only able to print the basename, and we must add the path ourselves
3249 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3250 DEPFLAGS='-MM'
3251
3252 # find source path
3253 if test -f configure; then
3254     source_path=.
3255 else
3256     source_path=$(cd $(dirname "$0"); pwd)
3257     case "$source_path" in
3258         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3259     esac
3260     test -e "$source_path/config.h" &&
3261         die "Out of tree builds are impossible with config.h in source dir."
3262 fi
3263
3264 for v in "$@"; do
3265     r=${v#*=}
3266     l=${v%"$r"}
3267     r=$(sh_quote "$r")
3268     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3269 done
3270
3271 find_things(){
3272     thing=$1
3273     pattern=$2
3274     file=$source_path/$3
3275     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3276 }
3277
3278 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3279 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3280 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3281 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3282 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3283 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3284 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3285 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3286 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3287
3288 find_things_extern(){
3289     thing=$1
3290     pattern=$2
3291     file=$source_path/$3
3292     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3293 }
3294
3295 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3296 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3297
3298 ALL_COMPONENTS="
3299     $BSF_LIST
3300     $DECODER_LIST
3301     $DEMUXER_LIST
3302     $ENCODER_LIST
3303     $FILTER_LIST
3304     $HWACCEL_LIST
3305     $INDEV_LIST
3306     $MUXER_LIST
3307     $OUTDEV_LIST
3308     $PARSER_LIST
3309     $PROTOCOL_LIST
3310 "
3311
3312 for n in $COMPONENT_LIST; do
3313     v=$(toupper ${n%s})_LIST
3314     eval enable \$$v
3315     eval ${n}_if_any="\$$v"
3316 done
3317
3318 enable $ARCH_EXT_LIST
3319
3320 die_unknown(){
3321     echo "Unknown option \"$1\"."
3322     echo "See $0 --help for available options."
3323     exit 1
3324 }
3325
3326 print_in_columns() {
3327     cols=$(expr $ncols / 24)
3328     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3329 }
3330
3331 show_list() {
3332     suffix=_$1
3333     shift
3334     echo $* | sed s/$suffix//g | print_in_columns
3335     exit 0
3336 }
3337
3338 rand_list(){
3339     IFS=', '
3340     set -- $*
3341     unset IFS
3342     for thing; do
3343         comp=${thing%:*}
3344         prob=${thing#$comp}
3345         prob=${prob#:}
3346         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3347         echo "prob ${prob:-0.5}"
3348         printf '%s\n' $comp
3349     done
3350 }
3351
3352 do_random(){
3353     action=$1
3354     shift
3355     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3356     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3357 }
3358
3359 for opt do
3360     optval="${opt#*=}"
3361     case "$opt" in
3362         --extra-ldflags=*)
3363             add_ldflags $optval
3364         ;;
3365         --extra-ldexeflags=*)
3366             add_ldexeflags $optval
3367         ;;
3368         --extra-ldlibflags=*)
3369             add_ldlibflags $optval
3370         ;;
3371         --extra-libs=*)
3372             add_extralibs $optval
3373         ;;
3374         --disable-devices)
3375             disable $INDEV_LIST $OUTDEV_LIST
3376         ;;
3377         --enable-debug=*)
3378             debuglevel="$optval"
3379         ;;
3380         --disable-programs)
3381             disable $PROGRAM_LIST
3382         ;;
3383         --disable-everything)
3384             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3385         ;;
3386         --disable-all)
3387             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3388             disable $LIBRARY_LIST $PROGRAM_LIST doc
3389             enable avutil
3390         ;;
3391         --enable-random|--disable-random)
3392             action=${opt%%-random}
3393             do_random ${action#--} $COMPONENT_LIST
3394         ;;
3395         --enable-random=*|--disable-random=*)
3396             action=${opt%%-random=*}
3397             do_random ${action#--} $optval
3398         ;;
3399         --enable-*=*|--disable-*=*)
3400             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3401             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3402             eval list=\$$(toupper $thing)_LIST
3403             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3404             list=$(filter "$name" $list)
3405             [ "$list" = "" ] && warn "Option $opt did not match anything"
3406             $action $list
3407         ;;
3408         --enable-?*|--disable-?*)
3409             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3410             if is_in $option $COMPONENT_LIST; then
3411                 test $action = disable && action=unset
3412                 eval $action \$$(toupper ${option%s})_LIST
3413             elif is_in $option $CMDLINE_SELECT; then
3414                 $action $option
3415             else
3416                 die_unknown $opt
3417             fi
3418         ;;
3419         --list-*)
3420             NAME="${opt#--list-}"
3421             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3422             NAME=${NAME%s}
3423             eval show_list $NAME \$$(toupper $NAME)_LIST
3424         ;;
3425         --help|-h) show_help
3426         ;;
3427         --fatal-warnings) enable fatal_warnings
3428         ;;
3429         *)
3430             optname="${opt%%=*}"
3431             optname="${optname#--}"
3432             optname=$(echo "$optname" | sed 's/-/_/g')
3433             if is_in $optname $CMDLINE_SET; then
3434                 eval $optname='$optval'
3435             elif is_in $optname $CMDLINE_APPEND; then
3436                 append $optname "$optval"
3437             else
3438                 die_unknown $opt
3439             fi
3440         ;;
3441     esac
3442 done
3443
3444 for e in $env; do
3445     eval "export $e"
3446 done
3447
3448 disabled logging && logfile=/dev/null
3449
3450 # Disable all the library-specific components if the library itself
3451 # is disabled, see AVCODEC_LIST and following _LIST variables.
3452
3453 disable_components(){
3454     disabled ${1} && disable $(
3455         eval components="\$$(toupper ${1})_COMPONENTS"
3456         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3457     )
3458 }
3459
3460 map 'disable_components $v' $LIBRARY_LIST
3461
3462 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3463 set >> $logfile
3464
3465 test -n "$valgrind" && toolchain="valgrind-memcheck"
3466
3467 case "$toolchain" in
3468     *-asan)
3469         cc_default="${toolchain%-asan}"
3470         add_cflags  -fsanitize=address
3471         add_ldflags -fsanitize=address
3472     ;;
3473     *-msan)
3474         cc_default="${toolchain%-msan}"
3475         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3476         add_ldflags -fsanitize=memory
3477     ;;
3478     *-tsan)
3479         cc_default="${toolchain%-tsan}"
3480         add_cflags  -fsanitize=thread -pie
3481         add_ldflags -fsanitize=thread -pie
3482         case "$toolchain" in
3483             gcc-tsan)
3484                 add_cflags  -fPIC
3485                 add_ldflags -fPIC
3486                 ;;
3487         esac
3488     ;;
3489     *-usan)
3490         cc_default="${toolchain%-usan}"
3491         add_cflags  -fsanitize=undefined
3492         add_ldflags -fsanitize=undefined
3493     ;;
3494     valgrind-*)
3495         target_exec_default="valgrind"
3496         case "$toolchain" in
3497             valgrind-massif)
3498                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3499                 ;;
3500             valgrind-memcheck)
3501                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3502                 ;;
3503         esac
3504     ;;
3505     msvc)
3506         # Check whether the current MSVC version needs the C99 converter.
3507         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3508         # support enough of C99 to build ffmpeg. Default to the new
3509         # behaviour if the regexp was unable to match anything, since this
3510         # successfully parses the version number of existing supported
3511         # versions that require the converter (MSVC 2010 and 2012).
3512         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3513         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3514             cc_default="cl"
3515         else
3516             cc_default="c99wrap cl"
3517         fi
3518         ld_default="$source_path/compat/windows/mslink"
3519         nm_default="dumpbin -symbols"
3520         ar_default="lib"
3521         case "$arch" in
3522         arm*)
3523             as_default="armasm"
3524             ;;
3525         esac
3526         target_os_default="win32"
3527         # Use a relative path for TMPDIR. This makes sure all the
3528         # ffconf temp files are written with a relative path, avoiding
3529         # issues with msys/win32 path conversion for MSVC parameters
3530         # such as -Fo<file> or -out:<file>.
3531         TMPDIR=.
3532     ;;
3533     icl)
3534         cc_default="icl"
3535         ld_default="xilink"
3536         nm_default="dumpbin -symbols"
3537         ar_default="xilib"
3538         target_os_default="win32"
3539         TMPDIR=.
3540     ;;
3541     gcov)
3542         add_cflags  -fprofile-arcs -ftest-coverage
3543         add_ldflags -fprofile-arcs -ftest-coverage
3544     ;;
3545     llvm-cov)
3546         add_cflags -fprofile-arcs -ftest-coverage
3547         add_ldflags --coverage
3548     ;;
3549     hardened)
3550         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3551         add_cflags   -fno-strict-overflow -fstack-protector-all
3552         add_ldflags  -Wl,-z,relro -Wl,-z,now
3553     ;;
3554     ?*)
3555         die "Unknown toolchain $toolchain"
3556     ;;
3557 esac
3558
3559 test -n "$cross_prefix" && enable cross_compile
3560
3561 if enabled cross_compile; then
3562     test -n "$arch" && test -n "$target_os" ||
3563         die "Must specify target arch and OS when cross-compiling"
3564 fi
3565
3566 ar_default="${cross_prefix}${ar_default}"
3567 cc_default="${cross_prefix}${cc_default}"
3568 cxx_default="${cross_prefix}${cxx_default}"
3569 nm_default="${cross_prefix}${nm_default}"
3570 pkg_config_default="${cross_prefix}${pkg_config_default}"
3571 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3572     ranlib_default="${cross_prefix}${ranlib_default} -D"
3573 else
3574     ranlib_default="${cross_prefix}${ranlib_default}"
3575 fi
3576 strip_default="${cross_prefix}${strip_default}"
3577 windres_default="${cross_prefix}${windres_default}"
3578
3579 sysinclude_default="${sysroot}/usr/include"
3580
3581 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3582     target_exec target_os yasmexe
3583 enabled cross_compile || host_cc_default=$cc
3584 set_default host_cc
3585
3586 pkg_config_fail_message=""
3587 if ! $pkg_config --version >/dev/null 2>&1; then
3588     warn "$pkg_config not found, library detection may fail."
3589     pkg_config=false
3590 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3591     pkg_config_fail_message="
3592 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3593 fi
3594
3595 if test $doxygen != $doxygen_default && \
3596   ! $doxygen --version >/dev/null 2>&1; then
3597     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3598 fi
3599
3600 exesuf() {
3601     case $1 in
3602         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3603     esac
3604 }
3605
3606 EXESUF=$(exesuf $target_os)
3607 HOSTEXESUF=$(exesuf $host_os)
3608
3609 # set temporary file name
3610 : ${TMPDIR:=$TEMPDIR}
3611 : ${TMPDIR:=$TMP}
3612 : ${TMPDIR:=/tmp}
3613
3614 if [ -n "$tempprefix" ] ; then
3615     mktemp(){
3616         echo $tempprefix.${HOSTNAME}.${UID}
3617     }
3618 elif ! check_cmd mktemp -u XXXXXX; then
3619     # simple replacement for missing mktemp
3620     # NOT SAFE FOR GENERAL USE
3621     mktemp(){
3622         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3623     }
3624 fi
3625
3626 tmpfile(){
3627     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3628         (set -C; exec > $tmp) 2>/dev/null ||
3629         die "Unable to create temporary file in $TMPDIR."
3630     append TMPFILES $tmp
3631     eval $1=$tmp
3632 }
3633
3634 trap 'rm -f -- $TMPFILES' EXIT
3635
3636 tmpfile TMPASM .asm
3637 tmpfile TMPC   .c
3638 tmpfile TMPCPP .cpp
3639 tmpfile TMPE   $EXESUF
3640 tmpfile TMPH   .h
3641 tmpfile TMPM   .m
3642 tmpfile TMPO   .o
3643 tmpfile TMPS   .S
3644 tmpfile TMPSH  .sh
3645 tmpfile TMPV   .ver
3646
3647 unset -f mktemp
3648
3649 chmod +x $TMPE
3650
3651 # make sure we can execute files in $TMPDIR
3652 cat > $TMPSH 2>> $logfile <<EOF
3653 #! /bin/sh
3654 EOF
3655 chmod +x $TMPSH >> $logfile 2>&1
3656 if ! $TMPSH >> $logfile 2>&1; then
3657     cat <<EOF
3658 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3659 variable to another directory and make sure that it is not mounted noexec.
3660 EOF
3661     die "Sanity test failed."
3662 fi
3663
3664 armasm_flags(){
3665     for flag; do
3666         case $flag in
3667             # Filter out MSVC cl.exe options from cflags that shouldn't
3668             # be passed to gas-preprocessor
3669             -M[TD]*)                                            ;;
3670             *)                  echo $flag                      ;;
3671         esac
3672    done
3673 }
3674
3675 ccc_flags(){
3676     for flag; do
3677         case $flag in
3678             -std=c99)           echo -c99                       ;;
3679             -mcpu=*)            echo -arch ${flag#*=}           ;;
3680             -mieee)             echo -ieee                      ;;
3681             -O*|-fast)          echo $flag                      ;;
3682             -fno-math-errno)    echo -assume nomath_errno       ;;
3683             -g)                 echo -g3                        ;;
3684             -Wall)              echo -msg_enable level2         ;;
3685             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3686             -Wl,*)              echo $flag                      ;;
3687             -f*|-W*)                                            ;;
3688             *)                  echo $flag                      ;;
3689         esac
3690    done
3691 }
3692
3693 cparser_flags(){
3694     for flag; do
3695         case $flag in
3696             -Wno-switch)             echo -Wno-switch-enum ;;
3697             -Wno-format-zero-length) ;;
3698             -Wdisabled-optimization) ;;
3699             -Wno-pointer-sign)       echo -Wno-other ;;
3700             *)                       echo $flag ;;
3701         esac
3702     done
3703 }
3704
3705 msvc_common_flags(){
3706     for flag; do
3707         case $flag in
3708             # In addition to specifying certain flags under the compiler
3709             # specific filters, they must be specified here as well or else the
3710             # generic catch all at the bottom will print the original flag.
3711             -Wall)                ;;
3712             -std=c99)             ;;
3713             # Common flags
3714             -fomit-frame-pointer) ;;
3715             -g)                   echo -Z7 ;;
3716             -fno-math-errno)      ;;
3717             -fno-common)          ;;
3718             -fno-signed-zeros)    ;;
3719             -fPIC)                ;;
3720             -mthumb)              ;;
3721             -march=*)             ;;
3722             -lz)                  echo zlib.lib ;;
3723             -lavifil32)           echo vfw32.lib ;;
3724             -lavicap32)           echo vfw32.lib user32.lib ;;
3725             -lx264)               echo libx264.lib ;;
3726             -l*)                  echo ${flag#-l}.lib ;;
3727             -LARGEADDRESSAWARE)   echo $flag ;;
3728             -L*)                  echo -libpath:${flag#-L} ;;
3729             *)                    echo $flag ;;
3730         esac
3731     done
3732 }
3733
3734 msvc_flags(){
3735     msvc_common_flags "$@"
3736     for flag; do
3737         case $flag in
3738             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3739                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3740                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3741                                        -wd4307 \
3742                                        -wd4273 -wd4554 -wd4701 ;;
3743         esac
3744     done
3745 }
3746
3747 icl_flags(){
3748     msvc_common_flags "$@"
3749     for flag; do
3750         case $flag in
3751             # Despite what Intel's documentation says -Wall, which is supported
3752             # on Windows, does enable remarks so disable them here.
3753             -Wall)                echo $flag -Qdiag-disable:remark ;;
3754             -std=c99)             echo -Qstd=c99 ;;
3755             -flto)                echo -ipo ;;
3756         esac
3757     done
3758 }
3759
3760 icc_flags(){
3761     for flag; do
3762         case $flag in
3763             -flto)                echo -ipo ;;
3764             *)                    echo $flag ;;
3765         esac
3766     done
3767 }
3768
3769 pgi_flags(){
3770     for flag; do
3771         case $flag in
3772             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3773             -fomit-frame-pointer) echo -Mnoframe ;;
3774             -g)                   echo -gopt ;;
3775             *)                    echo $flag ;;
3776         esac
3777     done
3778 }
3779
3780 suncc_flags(){
3781     for flag; do
3782         case $flag in
3783             -march=*|-mcpu=*)
3784                 case "${flag#*=}" in
3785                     native)                   echo -xtarget=native       ;;
3786                     v9|niagara)               echo -xarch=sparc          ;;
3787                     ultrasparc)               echo -xarch=sparcvis       ;;
3788                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3789                     i586|pentium)             echo -xchip=pentium        ;;
3790                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3791                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3792                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3793                     pentium4*)          echo -xtarget=pentium4           ;;
3794                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3795                     *-sse3)             echo -xarch=sse3                 ;;
3796                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3797                     bonnell)                   echo -xarch=ssse3         ;;
3798                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3799                     westmere)                  echo -xtarget=westmere    ;;
3800                     silvermont)                echo -xarch=sse4_2        ;;
3801                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3802                     core-avx*|ivybridge|haswell|broadwell)
3803                                                echo -xarch=avx           ;;
3804                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3805                     btver1)                    echo -xarch=amdsse4a      ;;
3806                     btver2|bdver*)             echo -xarch=avx           ;;
3807                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3808                     k8|opteron|athlon64|athlon-fx)
3809                                                echo -xarch=sse2a         ;;
3810                     athlon*)                   echo -xarch=pentium_proa  ;;
3811                 esac
3812                 ;;
3813             -std=c99)             echo -xc99              ;;
3814             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3815             -fPIC)                echo -KPIC -xcode=pic32 ;;
3816             -W*,*)                echo $flag              ;;
3817             -f*-*|-W*|-mimpure-text)                      ;;
3818             -shared)              echo -G                 ;;
3819             *)                    echo $flag              ;;
3820         esac
3821     done
3822 }
3823
3824 tms470_flags(){
3825     for flag; do
3826         case $flag in
3827             -march=*|-mcpu=*)
3828                 case "${flag#*=}" in
3829                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3830                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3831                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3832                     armv6*|arm11*)          echo -mv=6   ;;
3833                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3834                                             echo -mv=5e  ;;
3835                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3836                 esac
3837                 ;;
3838             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3839             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3840             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3841             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3842             -msoft-float)   echo --float_support=vfplib       ;;
3843             -O[0-3]|-mf=*)  echo $flag                        ;;
3844             -g)             echo -g -mn                       ;;
3845             -pds=*)         echo $flag                        ;;
3846             -D*|-I*)        echo $flag                        ;;
3847             --gcc|--abi=*)  echo $flag                        ;;
3848             -me)            echo $flag                        ;;
3849         esac
3850     done
3851 }
3852
3853 probe_cc(){
3854     pfx=$1
3855     _cc=$2
3856     first=$3
3857
3858     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3859     unset _ld_o _ldflags _ld_lib _ld_path
3860     unset _depflags _DEPCMD _DEPFLAGS
3861     _flags_filter=echo
3862
3863     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3864         true # no-op to avoid reading stdin in following checks
3865     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3866         _type=llvm_gcc
3867         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3868         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3869         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3870         _cflags_speed='-O3'
3871         _cflags_size='-Os'
3872     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3873         _type=gcc
3874         gcc_version=$($_cc --version | head -n1)
3875         gcc_basever=$($_cc -dumpversion)
3876         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3877         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3878         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3879         case $gcc_basever in
3880             2) ;;
3881             2.*) ;;
3882             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3883         esac
3884         if [ "$first" = true ]; then
3885             case $gcc_basever in
3886                 4.2*)
3887                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3888             esac
3889         fi
3890         _cflags_speed='-O3'
3891         _cflags_size='-Os'
3892     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3893         _type=icc
3894         _ident=$($_cc --version | head -n1)
3895         _depflags='-MMD'
3896         _cflags_speed='-O3'
3897         _cflags_size='-Os'
3898         _cflags_noopt='-O1'
3899         _flags_filter=icc_flags
3900     elif $_cc -v 2>&1 | grep -q xlc; then
3901         _type=xlc
3902         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3903         _cflags_speed='-O5'
3904         _cflags_size='-O5 -qcompact'
3905     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3906         _type=ccc
3907         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3908         _DEPFLAGS='-M'
3909         _cflags_speed='-fast'
3910         _cflags_size='-O1'
3911         _flags_filter=ccc_flags
3912     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3913         test -d "$sysroot" || die "No valid sysroot specified."
3914         _type=armcc
3915         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3916         armcc_conf="$PWD/armcc.conf"
3917         $_cc --arm_linux_configure                 \
3918              --arm_linux_config_file="$armcc_conf" \
3919              --configure_sysroot="$sysroot"        \
3920              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3921              die "Error creating armcc configuration file."
3922         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3923         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3924         as_default="${cross_prefix}gcc"
3925         _depflags='-MMD'
3926         _cflags_speed='-O3'
3927         _cflags_size='-Os'
3928     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3929         _type=tms470
3930         _ident=$($_cc -version | head -n1 | tr -s ' ')
3931         _flags='--gcc --abi=eabi -me'
3932         _cc_e='-ppl -fe=$@'
3933         _cc_o='-fe=$@'
3934         _depflags='-ppa -ppd=$(@:.o=.d)'
3935         _cflags_speed='-O3 -mf=5'
3936         _cflags_size='-O3 -mf=2'
3937         _flags_filter=tms470_flags
3938     elif $_cc -v 2>&1 | grep -q clang; then
3939         _type=clang
3940         _ident=$($_cc --version 2>/dev/null | head -n1)
3941         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3942         _cflags_speed='-O3'
3943         _cflags_size='-Os'
3944     elif $_cc -V 2>&1 | grep -q Sun; then
3945         _type=suncc
3946         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3947         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3948         _DEPFLAGS='-xM1 -xc99'
3949         _ldflags='-std=c99'
3950         _cflags_speed='-O5'
3951         _cflags_size='-O5 -xspace'
3952         _flags_filter=suncc_flags
3953     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3954         _type=pathscale
3955         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3956         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3957         _cflags_speed='-O2'
3958         _cflags_size='-Os'
3959         _flags_filter='filter_out -Wdisabled-optimization'
3960     elif $_cc -v 2>&1 | grep -q Open64; then
3961         _type=open64
3962         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3963         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3964         _cflags_speed='-O2'
3965         _cflags_size='-Os'
3966         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3967     elif $_cc -V 2>&1 | grep -q Portland; then
3968         _type=pgi
3969         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3970         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3971         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3972         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3973         _cflags_noopt="-O"
3974         _flags_filter=pgi_flags
3975     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3976         _type=armasm
3977         _ident=$($_cc | head -n1)
3978         # 4509: "This form of conditional instruction is deprecated"
3979         _flags="-nologo -ignore 4509"
3980         _flags_filter=armasm_flags
3981     elif $_cc 2>&1 | grep -q Intel; then
3982         _type=icl
3983         _ident=$($_cc 2>&1 | head -n1)
3984         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3985         # Not only is O3 broken on 13.x+ but it is slower on all previous
3986         # versions (tested) as well.
3987         _cflags_speed="-O2"
3988         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3989         if $_cc 2>&1 | grep -q Linker; then
3990             _ld_o='-out:$@'
3991         else
3992             _ld_o='-Fe$@'
3993         fi
3994         _cc_o='-Fo$@'
3995         _cc_e='-P'
3996         _flags_filter=icl_flags
3997         _ld_lib='lib%.a'
3998         _ld_path='-libpath:'
3999         # -Qdiag-error to make icl error when seeing certain unknown arguments
4000         _flags='-nologo -Qdiag-error:4044,10157'
4001         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4002         # with MSVC which enables it by default.
4003         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4004         disable stripping
4005     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4006         _type=msvc
4007         _ident=$($_cc 2>&1 | head -n1)
4008         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4009         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4010         _cflags_speed="-O2"
4011         _cflags_size="-O1"
4012         if $_cc -nologo- 2>&1 | grep -q Linker; then
4013             _ld_o='-out:$@'
4014         else
4015             _ld_o='-Fe$@'
4016         fi
4017         _cc_o='-Fo$@'
4018         _cc_e='-P -Fi$@'
4019         _flags_filter=msvc_flags
4020         _ld_lib='lib%.a'
4021         _ld_path='-libpath:'
4022         _flags='-nologo'
4023         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4024         disable stripping
4025     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4026         _type=cparser
4027         _ident=$($_cc --version | head -n1)
4028         _depflags='-MMD'
4029         _cflags_speed='-O4'
4030         _cflags_size='-O2'
4031         _flags_filter=cparser_flags
4032     fi
4033
4034     eval ${pfx}_type=\$_type
4035     eval ${pfx}_ident=\$_ident
4036 }
4037
4038 set_ccvars(){
4039     eval ${1}_C=\${_cc_c-\${${1}_C}}
4040     eval ${1}_E=\${_cc_e-\${${1}_E}}
4041     eval ${1}_O=\${_cc_o-\${${1}_O}}
4042
4043     if [ -n "$_depflags" ]; then
4044         eval ${1}_DEPFLAGS=\$_depflags
4045     else
4046         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4047         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4048         eval DEP${1}FLAGS=\$_flags
4049     fi
4050 }
4051
4052 probe_cc cc "$cc" "true"
4053 cflags_filter=$_flags_filter
4054 cflags_speed=$_cflags_speed
4055 cflags_size=$_cflags_size
4056 cflags_noopt=$_cflags_noopt
4057 add_cflags $_flags $_cflags
4058 cc_ldflags=$_ldflags
4059 set_ccvars CC
4060
4061 probe_cc hostcc "$host_cc"
4062 host_cflags_filter=$_flags_filter
4063 add_host_cflags  $_flags $_cflags
4064 set_ccvars HOSTCC
4065
4066 test -n "$cc_type" && enable $cc_type ||
4067     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4068
4069 : ${as_default:=$cc}
4070 : ${objcc_default:=$cc}
4071 : ${dep_cc_default:=$cc}
4072 : ${ld_default:=$cc}
4073 : ${host_ld_default:=$host_cc}
4074 set_default ar as objcc dep_cc ld ln_s host_ld windres
4075
4076 probe_cc as "$as"
4077 asflags_filter=$_flags_filter
4078 add_asflags $_flags $_cflags
4079 set_ccvars AS
4080
4081 probe_cc objcc "$objcc"
4082 objcflags_filter=$_flags_filter
4083 add_objcflags $_flags $_cflags
4084 set_ccvars OBJC
4085
4086 probe_cc ld "$ld"
4087 ldflags_filter=$_flags_filter
4088 add_ldflags $_flags $_ldflags
4089 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4090 LD_O=${_ld_o-$LD_O}
4091 LD_LIB=${_ld_lib-$LD_LIB}
4092 LD_PATH=${_ld_path-$LD_PATH}
4093
4094 probe_cc hostld "$host_ld"
4095 host_ldflags_filter=$_flags_filter
4096 add_host_ldflags $_flags $_ldflags
4097 HOSTLD_O=${_ld_o-$HOSTLD_O}
4098
4099 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4100     probe_cc depcc "$dep_cc"
4101     CCDEP=${_DEPCMD:-$DEPCMD}
4102     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4103     DEPCCFLAGS=$_flags
4104 fi
4105
4106 if $ar 2>&1 | grep -q Microsoft; then
4107     arflags="-nologo"
4108     ar_o='-out:$@'
4109 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4110     arflags="rq"
4111     ar_o='$@'
4112 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4113     arflags='-Xany -r -c'
4114     ar_o='$@'
4115 elif $ar 2>&1 | grep -q "\[D\] "; then
4116     arflags="rcD"
4117     ar_o='$@'
4118 else
4119     arflags="rc"
4120     ar_o='$@'
4121 fi
4122
4123 add_cflags $extra_cflags
4124 add_cxxflags $extra_cxxflags
4125 add_objcflags $extra_objcflags
4126 add_asflags $extra_cflags
4127
4128 if test -n "$sysroot"; then
4129     case "$cc_type" in
4130         gcc|llvm_gcc|clang)
4131             add_cppflags --sysroot="$sysroot"
4132             add_ldflags --sysroot="$sysroot"
4133 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4134             add_cppflags -isysroot "$sysroot"
4135             add_ldflags -isysroot "$sysroot"
4136         ;;
4137         tms470)
4138             add_cppflags -I"$sysinclude"
4139             add_ldflags  --sysroot="$sysroot"
4140         ;;
4141     esac
4142 fi
4143
4144 if test "$cpu" = host; then
4145     enabled cross_compile &&
4146         die "--cpu=host makes no sense when cross-compiling."
4147
4148     case "$cc_type" in
4149         gcc|llvm_gcc)
4150             check_native(){
4151                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4152                 sed -n "/cc1.*$1=/{
4153                             s/.*$1=\\([^ ]*\\).*/\\1/
4154                             p
4155                             q
4156                         }" $TMPE
4157             }
4158             cpu=$(check_native -march || check_native -mcpu)
4159         ;;
4160         clang)
4161             check_native(){
4162                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4163                 sed -n "/cc1.*-target-cpu /{
4164                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4165                             p
4166                             q
4167                         }" $TMPE
4168             }
4169             cpu=$(check_native -march)
4170         ;;
4171     esac
4172
4173     test "${cpu:-host}" = host &&
4174         die "--cpu=host not supported with compiler $cc"
4175 fi
4176
4177 # Deal with common $arch aliases
4178 case "$arch" in
4179     aarch64|arm64)
4180         arch="aarch64"
4181     ;;
4182     arm*|iPad*|iPhone*)
4183         arch="arm"
4184     ;;
4185     mips*|IP*)
4186         case "$arch" in
4187         *el)
4188             add_cppflags -EL
4189             add_ldflags -EL
4190         ;;
4191         *eb)
4192             add_cppflags -EB
4193             add_ldflags -EB
4194         ;;
4195         esac
4196         arch="mips"
4197     ;;
4198     parisc*|hppa*)
4199         arch="parisc"
4200     ;;
4201     "Power Macintosh"|ppc*|powerpc*)
4202         arch="ppc"
4203     ;;
4204     s390|s390x)
4205         arch="s390"
4206     ;;
4207     sh4|sh)
4208         arch="sh4"
4209     ;;
4210     sun4u|sparc*)
4211         arch="sparc"
4212     ;;
4213     tilegx|tile-gx)
4214         arch="tilegx"
4215     ;;
4216     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4217         arch="x86"
4218     ;;
4219 esac
4220
4221 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4222 enable $arch
4223
4224 # Add processor-specific flags
4225 if enabled aarch64; then
4226
4227     case $cpu in
4228         armv*)
4229             cpuflags="-march=$cpu"
4230         ;;
4231         *)
4232             cpuflags="-mcpu=$cpu"
4233         ;;
4234     esac
4235
4236 elif enabled alpha; then
4237
4238     cpuflags="-mcpu=$cpu"
4239
4240 elif enabled arm; then
4241
4242     check_arm_arch() {
4243         check_cpp_condition stddef.h \
4244             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4245             $cpuflags
4246     }
4247
4248     probe_arm_arch() {
4249         if   check_arm_arch 4;        then echo armv4
4250         elif check_arm_arch 4T;       then echo armv4t
4251         elif check_arm_arch 5;        then echo armv5
4252         elif check_arm_arch 5E;       then echo armv5e
4253         elif check_arm_arch 5T;       then echo armv5t
4254         elif check_arm_arch 5TE;      then echo armv5te
4255         elif check_arm_arch 5TEJ;     then echo armv5te
4256         elif check_arm_arch 6;        then echo armv6
4257         elif check_arm_arch 6J;       then echo armv6j
4258         elif check_arm_arch 6K;       then echo armv6k
4259         elif check_arm_arch 6Z;       then echo armv6z
4260         elif check_arm_arch 6ZK;      then echo armv6zk
4261         elif check_arm_arch 6T2;      then echo armv6t2
4262         elif check_arm_arch 7;        then echo armv7
4263         elif check_arm_arch 7A  7_A;  then echo armv7-a
4264         elif check_arm_arch 7S;       then echo armv7-a
4265         elif check_arm_arch 7R  7_R;  then echo armv7-r
4266         elif check_arm_arch 7M  7_M;  then echo armv7-m
4267         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4268         elif check_arm_arch 8A  8_A;  then echo armv8-a
4269         fi
4270     }
4271
4272     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4273
4274     case $cpu in
4275         armv*)
4276             cpuflags="-march=$cpu"
4277             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4278         ;;
4279         *)
4280             cpuflags="-mcpu=$cpu"
4281             case $cpu in
4282                 cortex-a*)                               subarch=armv7a  ;;
4283                 cortex-r*)                               subarch=armv7r  ;;
4284                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4285                 arm11*)                                  subarch=armv6   ;;
4286                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4287                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4288                 *)                             subarch=$(probe_arm_arch) ;;
4289             esac
4290         ;;
4291     esac
4292
4293     case "$subarch" in
4294         armv5t*)    enable fast_clz                ;;
4295         armv[6-8]*)
4296             enable fast_clz
4297             disabled fast_unaligned || enable fast_unaligned
4298             ;;
4299     esac
4300
4301 elif enabled avr32; then
4302
4303     case $cpu in
4304         ap7[02]0[0-2])
4305             subarch="avr32_ap"
4306             cpuflags="-mpart=$cpu"
4307         ;;
4308         ap)
4309             subarch="avr32_ap"
4310             cpuflags="-march=$cpu"
4311         ;;
4312         uc3[ab]*)
4313             subarch="avr32_uc"
4314             cpuflags="-mcpu=$cpu"
4315         ;;
4316         uc)
4317             subarch="avr32_uc"
4318             cpuflags="-march=$cpu"
4319         ;;
4320     esac
4321
4322 elif enabled bfin; then
4323
4324     cpuflags="-mcpu=$cpu"
4325
4326 elif enabled mips; then
4327
4328     cpuflags="-march=$cpu"
4329
4330     if [ "$cpu" != "generic" ]; then
4331         disable mips32r2
4332         disable mips32r5
4333         disable mips64r2
4334         disable mips32r6
4335         disable mips64r6
4336         disable loongson2
4337         disable loongson3
4338
4339         case $cpu in
4340             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4341                 enable mips32r2
4342                 disable msa
4343             ;;
4344             p5600|i6400)
4345                 disable mipsdsp
4346                 disable mipsdspr2
4347             ;;
4348             loongson*)
4349                 enable loongson2
4350                 enable loongson3
4351                 enable local_aligned_8 local_aligned_16 local_aligned_32
4352                 enable simd_align_16
4353                 enable fast_64bit
4354                 enable fast_clz
4355                 enable fast_cmov
4356                 enable fast_unaligned
4357                 disable aligned_stack
4358                 case $cpu in
4359                     loongson3*)
4360                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4361                     ;;
4362                     loongson2e)
4363                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4364                     ;;
4365                     loongson2f)
4366                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4367                     ;;
4368                 esac
4369             ;;
4370             *)
4371                 # Unknown CPU. Disable everything.
4372                 warn "unknown CPU. Disabling all MIPS optimizations."
4373                 disable mipsfpu
4374                 disable mipsdsp
4375                 disable mipsdspr2
4376                 disable msa
4377                 disable mmi
4378             ;;
4379         esac
4380
4381         case $cpu in
4382             24kc)
4383                 disable mipsfpu
4384                 disable mipsdsp
4385                 disable mipsdspr2
4386             ;;
4387             24kf*)
4388                 disable mipsdsp
4389                 disable mipsdspr2
4390             ;;
4391             24kec|34kc|1004kc)
4392                 disable mipsfpu
4393                 disable mipsdspr2
4394             ;;
4395             24kef*|34kf*|1004kf*)
4396                 disable mipsdspr2
4397             ;;
4398             74kc)
4399                 disable mipsfpu
4400             ;;
4401             p5600)
4402                 enable mips32r5
4403                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4404             ;;
4405             i6400)
4406                 enable mips64r6
4407                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4408             ;;
4409         esac
4410     else
4411         # We do not disable anything. Is up to the user to disable the unwanted features.
4412         warn 'generic cpu selected'
4413     fi
4414
4415 elif enabled ppc; then
4416
4417     disable ldbrx
4418
4419     case $(tolower $cpu) in
4420         601|ppc601|powerpc601)
4421             cpuflags="-mcpu=601"
4422             disable altivec
4423         ;;
4424         603*|ppc603*|powerpc603*)
4425             cpuflags="-mcpu=603"
4426             disable altivec
4427         ;;
4428         604*|ppc604*|powerpc604*)
4429             cpuflags="-mcpu=604"
4430             disable altivec
4431         ;;
4432         g3|75*|ppc75*|powerpc75*)
4433             cpuflags="-mcpu=750"
4434             disable altivec
4435         ;;
4436         g4|745*|ppc745*|powerpc745*)
4437             cpuflags="-mcpu=7450"
4438             disable vsx
4439         ;;
4440         74*|ppc74*|powerpc74*)
4441             cpuflags="-mcpu=7400"
4442             disable vsx
4443         ;;
4444         g5|970|ppc970|powerpc970)
4445             cpuflags="-mcpu=970"
4446             disable vsx
4447         ;;
4448         power[3-6]*)
4449             cpuflags="-mcpu=$cpu"
4450             disable vsx
4451         ;;
4452         power[7-8]*)
4453             cpuflags="-mcpu=$cpu"
4454         ;;
4455         cell)
4456             cpuflags="-mcpu=cell"
4457             enable ldbrx
4458             disable vsx
4459         ;;
4460         e500mc)
4461             cpuflags="-mcpu=e500mc"
4462             disable altivec
4463         ;;
4464         e500v2)
4465             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4466             disable altivec
4467             disable dcbzl
4468         ;;
4469         e500)
4470             cpuflags="-mcpu=8540 -mhard-float"
4471             disable altivec
4472             disable dcbzl
4473         ;;
4474     esac
4475
4476 elif enabled sparc; then
4477
4478     case $cpu in
4479         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4480             cpuflags="-mcpu=$cpu"
4481         ;;
4482         ultrasparc*|niagara[234])
4483             cpuflags="-mcpu=$cpu"
4484         ;;
4485     esac
4486
4487 elif enabled x86; then
4488
4489     case $cpu in
4490         i[345]86|pentium)
4491             cpuflags="-march=$cpu"
4492             disable i686
4493             disable mmx
4494         ;;
4495         # targets that do NOT support nopl and conditional mov (cmov)
4496         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4497             cpuflags="-march=$cpu"
4498             disable i686
4499         ;;
4500         # targets that do support nopl and conditional mov (cmov)
4501         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4502         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4503             cpuflags="-march=$cpu"
4504             enable i686
4505             enable fast_cmov
4506         ;;
4507         # targets that do support conditional mov but on which it's slow
4508         pentium4|pentium4m|prescott|nocona)
4509             cpuflags="-march=$cpu"
4510             enable i686
4511             disable fast_cmov
4512         ;;
4513     esac
4514
4515 fi
4516
4517 if [ "$cpu" != generic ]; then
4518     add_cflags  $cpuflags
4519     add_asflags $cpuflags
4520     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4521 fi
4522
4523 # compiler sanity check
4524 check_exec <<EOF
4525 int main(void){ return 0; }
4526 EOF
4527 if test "$?" != 0; then
4528     echo "$cc is unable to create an executable file."
4529     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4530         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4531         echo "Only do this if you know what cross compiling means."
4532     fi
4533     die "C compiler test failed."
4534 fi
4535
4536 add_cppflags -D_ISOC99_SOURCE
4537 add_cxxflags -D__STDC_CONSTANT_MACROS
4538 add_cxxflags -std=c++98
4539 check_cflags -std=c99
4540 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4541 #include <stdlib.h>
4542 EOF
4543 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4544 #include <stdlib.h>
4545 EOF
4546
4547 add_host_cppflags -D_ISOC99_SOURCE
4548 check_host_cflags -std=c99
4549 check_host_cflags -Wall
4550 check_host_cflags -O3
4551
4552 check_64bit(){
4553     arch32=$1
4554     arch64=$2
4555     expr=$3
4556     check_code cc "" "int test[2*($expr) - 1]" &&
4557         subarch=$arch64 || subarch=$arch32
4558 }
4559
4560 case "$arch" in
4561     aarch64|alpha|ia64)
4562         spic=$shared
4563     ;;
4564     mips)
4565         check_64bit mips mips64 '_MIPS_SIM > 1'
4566         spic=$shared
4567     ;;
4568     parisc)
4569         check_64bit parisc parisc64 'sizeof(void *) > 4'
4570         spic=$shared
4571     ;;
4572     ppc)
4573         check_64bit ppc ppc64 'sizeof(void *) > 4'
4574         spic=$shared
4575     ;;
4576     s390)
4577         check_64bit s390 s390x 'sizeof(void *) > 4'
4578         spic=$shared
4579     ;;
4580     sparc)
4581         check_64bit sparc sparc64 'sizeof(void *) > 4'
4582         spic=$shared
4583     ;;
4584     x86)
4585         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4586         # Treat x32 as x64 for now. Note it also needs spic=$shared
4587         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4588             subarch=x86_64
4589         if test "$subarch" = "x86_64"; then
4590             spic=$shared
4591         fi
4592     ;;
4593     ppc)
4594         check_cc <<EOF && subarch="ppc64"
4595         int test[(int)sizeof(char*) - 7];
4596 EOF
4597     ;;
4598 esac
4599
4600 enable $subarch
4601 enabled spic && enable_weak pic
4602
4603 # OS specific
4604 case $target_os in
4605     aix)
4606         SHFLAGS=-shared
4607         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4608         enabled shared && add_ldflags -Wl,-brtl
4609         ;;
4610     android)
4611         disable symver
4612         enable section_data_rel_ro
4613         SLIB_INSTALL_NAME='$(SLIBNAME)'
4614         SLIB_INSTALL_LINKS=
4615         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4616         ;;
4617     haiku)
4618         prefix_default="/boot/common"
4619         network_extralibs="-lnetwork"
4620         host_libs=
4621         ;;
4622     sunos)
4623         SHFLAGS='-shared -Wl,-h,$$(@F)'
4624         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4625         network_extralibs="-lsocket -lnsl"
4626         add_cppflags -D__EXTENSIONS__
4627         # When using suncc to build, the Solaris linker will mark
4628         # an executable with each instruction set encountered by
4629         # the Solaris assembler.  As our libraries contain their own
4630         # guards for processor-specific code, instead suppress
4631         # generation of the HWCAPS ELF section on Solaris x86 only.
4632         enabled_all suncc x86 &&
4633             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4634             add_ldflags -Wl,-M,mapfile
4635         nm_default='nm -P -g'
4636         version_script='-M'
4637         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4638         ;;
4639     netbsd)
4640         disable symver
4641         oss_indev_extralibs="-lossaudio"
4642         oss_outdev_extralibs="-lossaudio"
4643         enabled gcc || check_ldflags -Wl,-zmuldefs
4644         ;;
4645     openbsd|bitrig)
4646         disable symver
4647         SHFLAGS='-shared'
4648         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4649         SLIB_INSTALL_LINKS=
4650         oss_indev_extralibs="-lossaudio"
4651         oss_outdev_extralibs="-lossaudio"
4652         ;;
4653     dragonfly)
4654         disable symver
4655         ;;
4656     freebsd)
4657         ;;
4658     bsd/os)
4659         add_extralibs -lpoll -lgnugetopt
4660         strip="strip -d"
4661         ;;
4662     darwin)
4663         enabled ppc && add_asflags -force_cpusubtype_ALL
4664         install_name_dir_default='$(SHLIBDIR)'
4665         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4666         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4667         strip="${strip} -x"
4668         add_ldflags -Wl,-dynamic,-search_paths_first
4669         SLIBSUF=".dylib"
4670         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4671         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4672         objformat="macho"
4673         enabled x86_64 && objformat="macho64"
4674         enabled_any pic shared x86_64 ||
4675             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4676         check_header dispatch/dispatch.h &&
4677             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4678         ;;
4679     msys*)
4680         die "Native MSYS builds are discouraged, please use the MINGW environment."
4681         ;;
4682     mingw32*|mingw64*)
4683         if test $target_os = "mingw32ce"; then
4684             disable network
4685         else
4686             target_os=mingw32
4687         fi
4688         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4689         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4690         LIBTARGET=i386
4691         if enabled x86_64; then
4692             LIBTARGET="i386:x86-64"
4693         elif enabled arm; then
4694             LIBTARGET=arm-wince
4695         fi
4696         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4697         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4698         shlibdir_default="$bindir_default"
4699         SLIBPREF=""
4700         SLIBSUF=".dll"
4701         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4702         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4703         dlltool="${cross_prefix}dlltool"
4704         if check_cmd lib.exe -list; then
4705             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4706             if enabled x86_64; then
4707                 LIBTARGET=x64
4708             fi
4709         elif check_cmd $dlltool --version; then
4710             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4711         fi
4712         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4713         SLIB_INSTALL_LINKS=
4714         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4715         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4716         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4717         objformat="win32"
4718         ranlib=:
4719         enable dos_paths
4720         check_ldflags -Wl,--nxcompat,--dynamicbase
4721         # Lets work around some stupidity in binutils.
4722         # ld will strip relocations from executables even though we need them
4723         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4724         # however ld then forgets what the entry point should be (oops) so we
4725         # have to manually (re)set it.
4726         if enabled x86_32; then
4727             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4728         elif enabled x86_64; then
4729             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4730             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4731             # Set image base >4GB for extra entropy with HEASLR
4732             add_ldexeflags -Wl,--image-base,0x140000000
4733             append SHFLAGS -Wl,--image-base,0x180000000
4734         fi
4735         ;;
4736     win32|win64)
4737         disable symver
4738         if enabled shared; then
4739             # Link to the import library instead of the normal static library
4740             # for shared libs.
4741             LD_LIB='%.lib'
4742             # Cannot build both shared and static libs with MSVC or icl.
4743             disable static
4744         fi
4745         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4746         shlibdir_default="$bindir_default"
4747         SLIBPREF=""
4748         SLIBSUF=".dll"
4749         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4750         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4751         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4752         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4753         SLIB_INSTALL_LINKS=
4754         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4755         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4756         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4757         objformat="win32"
4758         ranlib=:
4759         enable dos_paths
4760         ;;
4761     cygwin*)
4762         target_os=cygwin
4763         shlibdir_default="$bindir_default"
4764         SLIBPREF="cyg"
4765         SLIBSUF=".dll"
4766         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4767         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4768         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4769         SLIB_INSTALL_LINKS=
4770         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4771         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4772         objformat="win32"
4773         enable dos_paths
4774         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4775         ;;
4776     *-dos|freedos|opendos)
4777         network_extralibs="-lsocket"
4778         objformat="coff"
4779         enable dos_paths
4780         add_cppflags -U__STRICT_ANSI__
4781         ;;
4782     linux)
4783         enable dv1394
4784         enable section_data_rel_ro
4785         ;;
4786     irix*)
4787         target_os=irix
4788         ranlib="echo ignoring ranlib"
4789         ;;
4790     os/2*)
4791         strip="lxlite -CS"
4792         objformat="aout"
4793         add_cppflags -D_GNU_SOURCE
4794         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4795         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4796         LIBSUF="_s.a"
4797         SLIBPREF=""
4798         SLIBSUF=".dll"
4799         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4800         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4801         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4802             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4803             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4804             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4805             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4806         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4807             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4808         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4809         SLIB_INSTALL_LINKS=
4810         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4811         enable dos_paths
4812         enable_weak os2threads
4813         ;;
4814     gnu/kfreebsd)
4815         add_cppflags -D_BSD_SOURCE
4816         ;;
4817     gnu)
4818         ;;
4819     qnx)
4820         add_cppflags -D_QNX_SOURCE
4821         network_extralibs="-lsocket"
4822         ;;
4823     symbian)
4824         SLIBSUF=".dll"
4825         enable dos_paths
4826         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4827         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4828         add_ldflags -Wl,--target1-abs,--no-undefined \
4829                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4830                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4831         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4832                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4833                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4834         ;;
4835     osf1)
4836         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT