avcodec/cbrt_data: include avutil/libm.h to unbreak compilation on systems without...
[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 Hardware accelerators:
153   --disable-d3d11va        disable D3D11VA code [autodetect]
154   --disable-dxva2          disable DXVA2 code [autodetect]
155   --disable-vaapi          disable VAAPI code [autodetect]
156   --disable-vda            disable VDA code [autodetect]
157   --disable-vdpau          disable VDPAU code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-cuda            enable dynamically linked CUDA [no]
200   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
201   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
202   --enable-frei0r          enable frei0r video filtering [no]
203   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
204                            if openssl, librtmp or gmp is not used [no]
205   --enable-gmp             enable gmp, needed for rtmp(t)e support
206                            if openssl or librtmp is not used [no]
207   --enable-gnutls          enable gnutls, needed for https support
208                            if openssl is not used [no]
209   --disable-iconv          disable iconv [autodetect]
210   --enable-jni             enable JNI support [no]
211   --enable-ladspa          enable LADSPA audio filtering [no]
212   --enable-libass          enable libass subtitles rendering,
213                            needed for subtitles and ass filter [no]
214   --enable-libbluray       enable BluRay reading using libbluray [no]
215   --enable-libbs2b         enable bs2b DSP library [no]
216   --enable-libcaca         enable textual display using libcaca [no]
217   --enable-libcelt         enable CELT decoding via libcelt [no]
218   --enable-libcdio         enable audio CD grabbing with libcdio [no]
219   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
220                            and libraw1394 [no]
221   --enable-libdcadec       enable DCA decoding via libdcadec [no]
222   --enable-libfaac         enable AAC encoding via libfaac [no]
223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
227   --enable-libgme          enable Game Music Emu via libgme [no]
228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
232   --enable-libmfx          enable HW acceleration through libmfx
233   --enable-libmodplug      enable ModPlug via libmodplug [no]
234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
235   --enable-libnut          enable NUT (de)muxing via libnut,
236                            native (de)muxer exists [no]
237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
239   --enable-libopencv       enable video filtering via libopencv [no]
240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
242   --enable-libopus         enable Opus de/encoding via libopus [no]
243   --enable-libpulse        enable Pulseaudio input via libpulse [no]
244   --enable-librubberband   enable rubberband needed for rubberband filter [no]
245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
250   --enable-libsoxr         enable Include libsoxr resampling [no]
251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
252   --enable-libssh          enable SFTP protocol via libssh [no]
253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
254   --enable-libtheora       enable Theora encoding via libtheora [no]
255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
258   --enable-libvidstab      enable video stabilization using vid.stab [no]
259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
261                            native implementation exists [no]
262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
264   --enable-libwebp         enable WebP encoding via libwebp [no]
265   --enable-libx264         enable H.264 encoding via x264 [no]
266   --enable-libx265         enable HEVC encoding via x265 [no]
267   --enable-libxavs         enable AVS encoding via xavs [no]
268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
272   --enable-libxvid         enable Xvid encoding via xvidcore,
273                            native MPEG-4/Xvid encoder exists [no]
274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
275   --enable-libzmq          enable message passing via libzmq [no]
276   --enable-libzvbi         enable teletext support via libzvbi [no]
277   --disable-lzma           disable lzma [autodetect]
278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
279   --enable-mediacodec      enable Android MediaCodec support [no]
280   --enable-mmal            enable decoding via MMAL [no]
281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
282   --enable-nvenc           enable NVIDIA NVENC support [no]
283   --enable-openal          enable OpenAL 1.1 capture support [no]
284   --enable-opencl          enable OpenCL code
285   --enable-opengl          enable OpenGL rendering [no]
286   --enable-openssl         enable openssl, needed for https support
287                            if gnutls is not used [no]
288   --disable-schannel       disable SChannel SSP, needed for TLS support on
289                            Windows if openssl and gnutls are not used [autodetect]
290   --disable-sdl            disable sdl [autodetect]
291   --disable-securetransport disable Secure Transport, needed for TLS support
292                            on OSX if openssl and gnutls are not used [autodetect]
293   --disable-videotoolbox   disable VideoToolbox code [autodetect]
294   --enable-x11grab         enable X11 grabbing (legacy) [no]
295   --disable-xlib           disable xlib [autodetect]
296   --disable-zlib           disable zlib [autodetect]
297
298 Toolchain options:
299   --arch=ARCH              select architecture [$arch]
300   --cpu=CPU                select the minimum required CPU (affects
301                            instruction selection, may crash on older CPUs)
302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
303   --progs-suffix=SUFFIX    program name suffix []
304   --enable-cross-compile   assume a cross-compiler is used
305   --sysroot=PATH           root of cross-build tree
306   --sysinclude=PATH        location of cross-build system headers
307   --target-os=OS           compiler targets OS [$target_os]
308   --target-exec=CMD        command to run executables on target
309   --target-path=DIR        path to view of build directory on target
310   --target-samples=DIR     path to samples directory on target
311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
312   --toolchain=NAME         set tool defaults according to NAME
313   --nm=NM                  use nm tool NM [$nm_default]
314   --ar=AR                  use archive tool AR [$ar_default]
315   --as=AS                  use assembler AS [$as_default]
316   --strip=STRIP            use strip tool STRIP [$strip_default]
317   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
318   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
319   --cc=CC                  use C compiler CC [$cc_default]
320   --cxx=CXX                use C compiler CXX [$cxx_default]
321   --objcc=OCC              use ObjC compiler OCC [$cc_default]
322   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
323   --ld=LD                  use linker LD [$ld_default]
324   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
325   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
326   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
327   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
328   --host-cc=HOSTCC         use host C compiler HOSTCC
329   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
330   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
331   --host-ld=HOSTLD         use host linker HOSTLD
332   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
333   --host-libs=HLIBS        use libs HLIBS when linking for host
334   --host-os=OS             compiler host OS [$target_os]
335   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
336   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
337   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
338   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
339   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
340   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
341   --extra-libs=ELIBS       add ELIBS [$ELIBS]
342   --extra-version=STRING   version string suffix []
343   --optflags=OPTFLAGS      override optimization-related compiler flags
344   --build-suffix=SUFFIX    library name suffix []
345   --enable-pic             build position-independent code
346   --enable-thumb           compile for Thumb instruction set
347   --enable-lto             use link-time optimization
348   --env="ENV=override"     override the environment variables
349
350 Advanced options (experts only):
351   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
352   --custom-allocator=NAME  use a supported custom allocator
353   --disable-symver         disable symbol versioning
354   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
355   --disable-safe-bitstream-reader
356                            disable buffer boundary checking in bitreaders
357                            (faster, but may crash)
358   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
359   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
360
361 Optimization options (experts only):
362   --disable-asm            disable all assembly optimizations
363   --disable-altivec        disable AltiVec optimizations
364   --disable-vsx            disable VSX optimizations
365   --disable-power8         disable POWER8 optimizations
366   --disable-amd3dnow       disable 3DNow! optimizations
367   --disable-amd3dnowext    disable 3DNow! extended optimizations
368   --disable-mmx            disable MMX optimizations
369   --disable-mmxext         disable MMXEXT optimizations
370   --disable-sse            disable SSE optimizations
371   --disable-sse2           disable SSE2 optimizations
372   --disable-sse3           disable SSE3 optimizations
373   --disable-ssse3          disable SSSE3 optimizations
374   --disable-sse4           disable SSE4 optimizations
375   --disable-sse42          disable SSE4.2 optimizations
376   --disable-avx            disable AVX optimizations
377   --disable-xop            disable XOP optimizations
378   --disable-fma3           disable FMA3 optimizations
379   --disable-fma4           disable FMA4 optimizations
380   --disable-avx2           disable AVX2 optimizations
381   --disable-aesni          disable AESNI optimizations
382   --disable-armv5te        disable armv5te optimizations
383   --disable-armv6          disable armv6 optimizations
384   --disable-armv6t2        disable armv6t2 optimizations
385   --disable-vfp            disable VFP optimizations
386   --disable-neon           disable NEON optimizations
387   --disable-inline-asm     disable use of inline assembly
388   --disable-yasm           disable use of nasm/yasm assembly
389   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
390   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
391   --disable-msa            disable MSA optimizations
392   --disable-mipsfpu        disable floating point MIPS optimizations
393   --disable-mmi            disable Loongson SIMD optimizations
394   --disable-fast-unaligned consider unaligned accesses slow
395
396 Developer options (useful when working on FFmpeg itself):
397   --disable-debug          disable debugging symbols
398   --enable-debug=LEVEL     set the debug level [$debuglevel]
399   --disable-optimizations  disable compiler optimizations
400   --enable-extra-warnings  enable more compiler warnings
401   --disable-stripping      disable stripping of executables and shared libraries
402   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
403                            2 causes a slowdown at runtime.
404   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
405   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
406                            leaks and errors, using the specified valgrind binary.
407                            Cannot be combined with --target-exec
408   --enable-ftrapv          Trap arithmetic overflows
409   --samples=PATH           location of test samples for FATE, if not set use
410                            \$FATE_SAMPLES at make invocation time.
411   --enable-neon-clobber-test check NEON registers for clobbering (should be
412                            used only for debugging purposes)
413   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
414                            should be used only for debugging purposes)
415   --enable-random          randomly enable/disable components
416   --disable-random
417   --enable-random=LIST     randomly enable/disable specific components or
418   --disable-random=LIST    component groups. LIST is a comma-separated list
419                            of NAME[:PROB] entries where NAME is a component
420                            (group) and PROB the probability associated with
421                            NAME (default 0.5).
422   --random-seed=VALUE      seed value for --enable/disable-random
423   --disable-valgrind-backtrace do not print a backtrace under Valgrind
424                            (only applies to --disable-optimizations builds)
425
426 NOTE: Object files are built at the place where configure is launched.
427 EOF
428   exit 0
429 }
430
431 quotes='""'
432 if test -t 1 && which tput >/dev/null 2>&1; then
433     ncolors=$(tput colors)
434     if test -n "$ncolors" && test $ncolors -ge 8; then
435         bold_color=$(tput bold)
436         warn_color=$(tput setaf 3)
437         error_color=$(tput setaf 1)
438         reset_color=$(tput sgr0)
439     fi
440     # 72 used instead of 80 since that's the default of pr
441     ncols=$(tput cols)
442 fi
443 : ${ncols:=72}
444
445 log(){
446     echo "$@" >> $logfile
447 }
448
449 log_file(){
450     log BEGIN $1
451     pr -n -t $1 >> $logfile
452     log END $1
453 }
454
455 warn(){
456     log "WARNING: $*"
457     WARNINGS="${WARNINGS}WARNING: $*\n"
458 }
459
460 die(){
461     log "$@"
462     echo "$error_color$bold_color$@$reset_color"
463     cat <<EOF
464
465 If you think configure made a mistake, make sure you are using the latest
466 version from Git.  If the latest version fails, report the problem to the
467 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
468 EOF
469     if disabled logging; then
470         cat <<EOF
471 Rerun configure with logging enabled (do not use --disable-logging), and
472 include the log this produces with your report.
473 EOF
474     else
475         cat <<EOF
476 Include the log file "$logfile" produced by configure as this will help
477 solve the problem.
478 EOF
479     fi
480     exit 1
481 }
482
483 # Avoid locale weirdness, besides we really just want to translate ASCII.
484 toupper(){
485     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
486 }
487
488 tolower(){
489     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
490 }
491
492 c_escape(){
493     echo "$*" | sed 's/["\\]/\\\0/g'
494 }
495
496 sh_quote(){
497     v=$(echo "$1" | sed "s/'/'\\\\''/g")
498     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
499     echo "$v"
500 }
501
502 cleanws(){
503     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
504 }
505
506 filter(){
507     pat=$1
508     shift
509     for v; do
510         eval "case $v in $pat) echo $v ;; esac"
511     done
512 }
513
514 filter_out(){
515     pat=$1
516     shift
517     for v; do
518         eval "case $v in $pat) ;; *) echo $v ;; esac"
519     done
520 }
521
522 map(){
523     m=$1
524     shift
525     for v; do eval $m; done
526 }
527
528 add_suffix(){
529     suffix=$1
530     shift
531     for v; do echo ${v}${suffix}; done
532 }
533
534 set_all(){
535     value=$1
536     shift
537     for var in $*; do
538         eval $var=$value
539     done
540 }
541
542 set_weak(){
543     value=$1
544     shift
545     for var; do
546         eval : \${$var:=$value}
547     done
548 }
549
550 sanitize_var_name(){
551     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
552 }
553
554 set_safe(){
555     var=$1
556     shift
557     eval $(sanitize_var_name "$var")='$*'
558 }
559
560 get_safe(){
561     eval echo \$$(sanitize_var_name "$1")
562 }
563
564 pushvar(){
565     for pvar in $*; do
566         eval level=\${${pvar}_level:=0}
567         eval ${pvar}_${level}="\$$pvar"
568         eval ${pvar}_level=$(($level+1))
569     done
570 }
571
572 popvar(){
573     for pvar in $*; do
574         eval level=\${${pvar}_level:-0}
575         test $level = 0 && continue
576         eval level=$(($level-1))
577         eval $pvar="\${${pvar}_${level}}"
578         eval ${pvar}_level=$level
579         eval unset ${pvar}_${level}
580     done
581 }
582
583 enable(){
584     set_all yes $*
585 }
586
587 disable(){
588     set_all no $*
589 }
590
591 enable_weak(){
592     set_weak yes $*
593 }
594
595 disable_weak(){
596     set_weak no $*
597 }
598
599 enable_safe(){
600     for var; do
601         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
602     done
603 }
604
605 disable_safe(){
606     for var; do
607         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
608     done
609 }
610
611 do_enable_deep(){
612     for var; do
613         enabled $var && continue
614         eval sel="\$${var}_select"
615         eval sgs="\$${var}_suggest"
616         pushvar var sgs
617         enable_deep $sel
618         popvar sgs
619         enable_deep_weak $sgs
620         popvar var
621     done
622 }
623
624 enable_deep(){
625     do_enable_deep $*
626     enable $*
627 }
628
629 enable_deep_weak(){
630     for var; do
631         disabled $var && continue
632         pushvar var
633         do_enable_deep $var
634         popvar var
635         enable_weak $var
636     done
637 }
638
639 enabled(){
640     test "${1#!}" = "$1" && op='=' || op=!=
641     eval test "x\$${1#!}" $op "xyes"
642 }
643
644 disabled(){
645     test "${1#!}" = "$1" && op='=' || op=!=
646     eval test "x\$${1#!}" $op "xno"
647 }
648
649 enabled_all(){
650     for opt; do
651         enabled $opt || return 1
652     done
653 }
654
655 disabled_all(){
656     for opt; do
657         disabled $opt || return 1
658     done
659 }
660
661 enabled_any(){
662     for opt; do
663         enabled $opt && return 0
664     done
665 }
666
667 disabled_any(){
668     for opt; do
669         disabled $opt && return 0
670     done
671     return 1
672 }
673
674 set_default(){
675     for opt; do
676         eval : \${$opt:=\$${opt}_default}
677     done
678 }
679
680 is_in(){
681     value=$1
682     shift
683     for var in $*; do
684         [ $var = $value ] && return 0
685     done
686     return 1
687 }
688
689 do_check_deps(){
690     for cfg; do
691         cfg="${cfg#!}"
692         enabled ${cfg}_checking && die "Circular dependency for $cfg."
693         disabled ${cfg}_checking && continue
694         enable ${cfg}_checking
695         append allopts $cfg
696
697         eval dep_all="\$${cfg}_deps"
698         eval dep_any="\$${cfg}_deps_any"
699         eval dep_sel="\$${cfg}_select"
700         eval dep_sgs="\$${cfg}_suggest"
701         eval dep_ifa="\$${cfg}_if"
702         eval dep_ifn="\$${cfg}_if_any"
703
704         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
705         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
706         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
707
708         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
709         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
710         enabled_all  $dep_all || disable $cfg
711         enabled_any  $dep_any || disable $cfg
712         disabled_any $dep_sel && disable $cfg
713
714         if enabled $cfg; then
715             enable_deep $dep_sel
716             enable_deep_weak $dep_sgs
717         fi
718
719         disable ${cfg}_checking
720     done
721 }
722
723 check_deps(){
724     unset allopts
725
726     do_check_deps "$@"
727
728     for cfg in $allopts; do
729         enabled $cfg || continue
730         eval dep_extralibs="\$${cfg}_extralibs"
731         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
732     done
733 }
734
735 print_config(){
736     pfx=$1
737     files=$2
738     shift 2
739     map 'eval echo "$v \${$v:-no}"' "$@" |
740     awk "BEGIN { split(\"$files\", files) }
741         {
742             c = \"$pfx\" toupper(\$1);
743             v = \$2;
744             sub(/yes/, 1, v);
745             sub(/no/,  0, v);
746             for (f in files) {
747                 file = files[f];
748                 if (file ~ /\\.h\$/) {
749                     printf(\"#define %s %d\\n\", c, v) >>file;
750                 } else if (file ~ /\\.asm\$/) {
751                     printf(\"%%define %s %d\\n\", c, v) >>file;
752                 } else if (file ~ /\\.mak\$/) {
753                     n = -v ? \"\" : \"!\";
754                     printf(\"%s%s=yes\\n\", n, c) >>file;
755                 } else if (file ~ /\\.texi\$/) {
756                     pre = -v ? \"\" : \"@c \";
757                     yesno = \$2;
758                     c2 = tolower(c);
759                     gsub(/_/, \"-\", c2);
760                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
761                 }
762             }
763         }"
764 }
765
766 print_enabled(){
767     suf=$1
768     shift
769     for v; do
770         enabled $v && printf "%s\n" ${v%$suf};
771     done
772 }
773
774 append(){
775     var=$1
776     shift
777     eval "$var=\"\$$var $*\""
778 }
779
780 prepend(){
781     var=$1
782     shift
783     eval "$var=\"$* \$$var\""
784 }
785
786 unique(){
787     var=$1
788     uniq_list=""
789     for tok in $(eval echo \$$var); do
790         uniq_list="$(filter_out $tok $uniq_list) $tok"
791     done
792     eval "$var=\"${uniq_list}\""
793 }
794
795 add_cppflags(){
796     append CPPFLAGS "$@"
797 }
798
799 add_cflags(){
800     append CFLAGS $($cflags_filter "$@")
801 }
802
803 add_cxxflags(){
804     append CXXFLAGS $($cflags_filter "$@")
805 }
806
807 add_asflags(){
808     append ASFLAGS $($asflags_filter "$@")
809 }
810
811 add_objcflags(){
812     append OBJCFLAGS $($objcflags_filter "$@")
813 }
814
815 add_ldflags(){
816     append LDFLAGS $($ldflags_filter "$@")
817 }
818
819 add_ldexeflags(){
820     append LDEXEFLAGS $($ldflags_filter "$@")
821 }
822
823 add_ldlibflags(){
824     append LDLIBFLAGS $($ldflags_filter "$@")
825 }
826
827 add_stripflags(){
828     append ASMSTRIPFLAGS "$@"
829 }
830
831 add_extralibs(){
832     prepend extralibs $($ldflags_filter "$@")
833 }
834
835 add_host_cppflags(){
836     append host_cppflags "$@"
837 }
838
839 add_host_cflags(){
840     append host_cflags $($host_cflags_filter "$@")
841 }
842
843 add_host_ldflags(){
844     append host_ldflags $($host_ldflags_filter "$@")
845 }
846
847 add_compat(){
848     append compat_objs $1
849     shift
850     map 'add_cppflags -D$v' "$@"
851 }
852
853 check_cmd(){
854     log "$@"
855     "$@" >> $logfile 2>&1
856 }
857
858 check_stat(){
859     log check_stat "$@"
860     stat "$1" >> $logfile 2>&1
861 }
862
863 cc_o(){
864     eval printf '%s\\n' $CC_O
865 }
866
867 cc_e(){
868     eval printf '%s\\n' $CC_E
869 }
870
871 check_cc(){
872     log check_cc "$@"
873     cat > $TMPC
874     log_file $TMPC
875     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
876 }
877
878 check_cxx(){
879     log check_cxx "$@"
880     cat > $TMPCPP
881     log_file $TMPCPP
882     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
883 }
884
885 check_objcc(){
886     log check_objcc "$@"
887     cat > $TMPM
888     log_file $TMPM
889     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
890 }
891
892 check_cpp(){
893     log check_cpp "$@"
894     cat > $TMPC
895     log_file $TMPC
896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
897 }
898
899 as_o(){
900     eval printf '%s\\n' $AS_O
901 }
902
903 check_as(){
904     log check_as "$@"
905     cat > $TMPS
906     log_file $TMPS
907     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
908 }
909
910 check_inline_asm(){
911     log check_inline_asm "$@"
912     name="$1"
913     code="$2"
914     shift 2
915     disable $name
916     check_cc "$@" <<EOF && enable $name
917 void foo(void){ __asm__ volatile($code); }
918 EOF
919 }
920
921 check_inline_asm_flags(){
922     log check_inline_asm_flags "$@"
923     name="$1"
924     code="$2"
925     flags=''
926     shift 2
927     while [ "$1" != "" ]; do
928       append flags $1
929       shift
930     done;
931     disable $name
932     cat > $TMPC <<EOF
933 void foo(void){ __asm__ volatile($code); }
934 EOF
935     log_file $TMPC
936     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
937     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
938 }
939
940 check_insn(){
941     log check_insn "$@"
942     check_inline_asm ${1}_inline "\"$2\""
943     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
944 }
945
946 check_yasm(){
947     log check_yasm "$@"
948     echo "$1" > $TMPS
949     log_file $TMPS
950     shift 1
951     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
952 }
953
954 ld_o(){
955     eval printf '%s\\n' $LD_O
956 }
957
958 check_ld(){
959     log check_ld "$@"
960     type=$1
961     shift 1
962     flags=$(filter_out '-l*|*.so' $@)
963     libs=$(filter '-l*|*.so' $@)
964     check_$type $($cflags_filter $flags) || return
965     flags=$($ldflags_filter $flags)
966     libs=$($ldflags_filter $libs)
967     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
968 }
969
970 print_include(){
971     hdr=$1
972     test "${hdr%.h}" = "${hdr}" &&
973         echo "#include $hdr"    ||
974         echo "#include <$hdr>"
975 }
976
977 check_code(){
978     log check_code "$@"
979     check=$1
980     headers=$2
981     code=$3
982     shift 3
983     {
984         for hdr in $headers; do
985             print_include $hdr
986         done
987         echo "int main(void) { $code; return 0; }"
988     } | check_$check "$@"
989 }
990
991 check_cppflags(){
992     log check_cppflags "$@"
993     check_cc "$@" <<EOF && append CPPFLAGS "$@"
994 int x;
995 EOF
996 }
997
998 test_cflags(){
999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_cc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_cflags(){
1007     log check_cflags "$@"
1008     test_cflags "$@" && add_cflags "$@"
1009 }
1010
1011 check_cxxflags(){
1012     log check_cxxflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_objcflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_objcc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_objcflags(){
1028     log check_cflags "$@"
1029     test_objcflags "$@" && add_objcflags "$@"
1030 }
1031
1032 test_ldflags(){
1033     log test_ldflags "$@"
1034     check_ld "cc" "$@" <<EOF
1035 int main(void){ return 0; }
1036 EOF
1037 }
1038
1039 check_ldflags(){
1040     log check_ldflags "$@"
1041     test_ldflags "$@" && add_ldflags "$@"
1042 }
1043
1044 test_stripflags(){
1045     log test_stripflags "$@"
1046     # call check_cc to get a fresh TMPO
1047     check_cc <<EOF
1048 int main(void) { return 0; }
1049 EOF
1050     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1051 }
1052
1053 check_stripflags(){
1054     log check_stripflags "$@"
1055     test_stripflags "$@" && add_stripflags "$@"
1056 }
1057
1058 check_header(){
1059     log check_header "$@"
1060     header=$1
1061     shift
1062     disable_safe $header
1063     check_cpp "$@" <<EOF && enable_safe $header
1064 #include <$header>
1065 int x;
1066 EOF
1067 }
1068
1069 check_header_objcc(){
1070     log check_header_objcc "$@"
1071     rm -f -- "$TMPO"
1072     header=$1
1073     shift
1074     disable_safe $header
1075     {
1076        echo "#include <$header>"
1077        echo "int main(void) { return 0; }"
1078     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1079 }
1080
1081 check_func(){
1082     log check_func "$@"
1083     func=$1
1084     shift
1085     disable $func
1086     check_ld "cc" "$@" <<EOF && enable $func
1087 extern int $func();
1088 int main(void){ $func(); }
1089 EOF
1090 }
1091
1092 check_complexfunc(){
1093     log check_complexfunc "$@"
1094     func=$1
1095     narg=$2
1096     shift 2
1097     test $narg = 2 && args="f, g" || args="f * I"
1098     disable $func
1099     check_ld "cc" "$@" <<EOF && enable $func
1100 #include <complex.h>
1101 #include <math.h>
1102 float foo(complex float f, complex float g) { return $func($args); }
1103 int main(void){ return (int) foo; }
1104 EOF
1105 }
1106
1107 check_mathfunc(){
1108     log check_mathfunc "$@"
1109     func=$1
1110     narg=$2
1111     shift 2
1112     test $narg = 2 && args="f, g" || args="f"
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 #include <math.h>
1116 float foo(float f, float g) { return $func($args); }
1117 int main(void){ return (int) foo; }
1118 EOF
1119 }
1120
1121 check_func_headers(){
1122     log check_func_headers "$@"
1123     headers=$1
1124     funcs=$2
1125     shift 2
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         for func in $funcs; do
1131             echo "long check_$func(void) { return (long) $func; }"
1132         done
1133         echo "int main(void) { return 0; }"
1134     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1135 }
1136
1137 check_class_headers_cpp(){
1138     log check_class_headers_cpp "$@"
1139     headers=$1
1140     classes=$2
1141     shift 2
1142     {
1143         for hdr in $headers; do
1144             echo "#include <$hdr>"
1145         done
1146         echo "int main(void) { "
1147         i=1
1148         for class in $classes; do
1149             echo "$class obj$i;"
1150             i=$(expr $i + 1)
1151         done
1152         echo "return 0; }"
1153     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_cpp_condition(){
1157     log check_cpp_condition "$@"
1158     header=$1
1159     condition=$2
1160     shift 2
1161     check_cpp "$@" <<EOF
1162 #include <$header>
1163 #if !($condition)
1164 #error "unsatisfied condition: $condition"
1165 #endif
1166 EOF
1167 }
1168
1169 check_lib(){
1170     log check_lib "$@"
1171     header="$1"
1172     func="$2"
1173     shift 2
1174     check_header $header && check_func $func "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib2(){
1178     log check_lib2 "$@"
1179     headers="$1"
1180     funcs="$2"
1181     shift 2
1182     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib_cpp(){
1186     log check_lib_cpp "$@"
1187     headers="$1"
1188     classes="$2"
1189     shift 2
1190     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_pkg_config(){
1194     log check_pkg_config "$@"
1195     pkgandversion="$1"
1196     pkg="${1%% *}"
1197     headers="$2"
1198     funcs="$3"
1199     shift 3
1200     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1201     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1202     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1203     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1204         set_safe "${pkg}_cflags" $pkg_cflags   &&
1205         set_safe "${pkg}_libs"   $pkg_libs
1206 }
1207
1208 check_exec(){
1209     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1210 }
1211
1212 check_exec_crash(){
1213     code=$(cat)
1214
1215     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1216     # are safe but may not be available everywhere.  Thus we use
1217     # raise(SIGTERM) instead.  The check is run in a subshell so we
1218     # can redirect the "Terminated" message from the shell.  SIGBUS
1219     # is not defined by standard C so it is used conditionally.
1220
1221     (check_exec "$@") >> $logfile 2>&1 <<EOF
1222 #include <signal.h>
1223 static void sighandler(int sig){
1224     raise(SIGTERM);
1225 }
1226 int foo(void){
1227     $code
1228 }
1229 int (*func_ptr)(void) = foo;
1230 int main(void){
1231     signal(SIGILL, sighandler);
1232     signal(SIGFPE, sighandler);
1233     signal(SIGSEGV, sighandler);
1234 #ifdef SIGBUS
1235     signal(SIGBUS, sighandler);
1236 #endif
1237     return func_ptr();
1238 }
1239 EOF
1240 }
1241
1242 check_type(){
1243     log check_type "$@"
1244     headers=$1
1245     type=$2
1246     shift 2
1247     disable_safe "$type"
1248     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1249 }
1250
1251 check_struct(){
1252     log check_struct "$@"
1253     headers=$1
1254     struct=$2
1255     member=$3
1256     shift 3
1257     disable_safe "${struct}_${member}"
1258     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1259         enable_safe "${struct}_${member}"
1260 }
1261
1262 check_builtin(){
1263     log check_builtin "$@"
1264     name=$1
1265     headers=$2
1266     builtin=$3
1267     shift 3
1268     disable "$name"
1269     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1270 }
1271
1272 check_compile_assert(){
1273     log check_compile_assert "$@"
1274     name=$1
1275     headers=$2
1276     condition=$3
1277     shift 3
1278     disable "$name"
1279     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1280 }
1281
1282 require(){
1283     name="$1"
1284     header="$2"
1285     func="$3"
1286     shift 3
1287     check_lib $header $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require2(){
1291     name="$1"
1292     headers="$2"
1293     func="$3"
1294     shift 3
1295     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require_cpp(){
1299     name="$1"
1300     headers="$2"
1301     classes="$3"
1302     shift 3
1303     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1304 }
1305
1306 use_pkg_config(){
1307     pkg="$1"
1308     check_pkg_config "$@" || return 1
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 require_pkg_config(){
1314     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1315 }
1316
1317 require_libfreetype(){
1318     log require_libfreetype "$@"
1319     pkg="freetype2"
1320     check_cmd $pkg_config --exists --print-errors $pkg \
1321       || die "ERROR: $pkg not found"
1322     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1323     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1324     {
1325         echo "#include <ft2build.h>"
1326         echo "#include FT_FREETYPE_H"
1327         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1328         echo "int main(void) { return 0; }"
1329     } | check_ld "cc" $pkg_cflags $pkg_libs \
1330       && set_safe "${pkg}_cflags" $pkg_cflags \
1331       && set_safe "${pkg}_libs"   $pkg_libs \
1332       || die "ERROR: $pkg not found"
1333     add_cflags    $(get_safe "${pkg}_cflags")
1334     add_extralibs $(get_safe "${pkg}_libs")
1335 }
1336
1337 hostcc_e(){
1338     eval printf '%s\\n' $HOSTCC_E
1339 }
1340
1341 hostcc_o(){
1342     eval printf '%s\\n' $HOSTCC_O
1343 }
1344
1345 check_host_cc(){
1346     log check_host_cc "$@"
1347     cat > $TMPC
1348     log_file $TMPC
1349     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1350 }
1351
1352 check_host_cpp(){
1353     log check_host_cpp "$@"
1354     cat > $TMPC
1355     log_file $TMPC
1356     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1357 }
1358
1359 check_host_cppflags(){
1360     log check_host_cppflags "$@"
1361     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cflags(){
1367     log check_host_cflags "$@"
1368     set -- $($host_cflags_filter "$@")
1369     check_host_cc "$@" <<EOF && append host_cflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cpp_condition(){
1375     log check_host_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     check_host_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 cp_if_changed(){
1388     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1389     mkdir -p "$(dirname $2)"
1390     $cp_f "$1" "$2"
1391 }
1392
1393 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1394 # system-dependent things.
1395
1396 AVCODEC_COMPONENTS="
1397     bsfs
1398     decoders
1399     encoders
1400     hwaccels
1401     parsers
1402 "
1403
1404 AVDEVICE_COMPONENTS="
1405     indevs
1406     outdevs
1407 "
1408 AVFILTER_COMPONENTS="
1409     filters
1410 "
1411 AVFORMAT_COMPONENTS="
1412     demuxers
1413     muxers
1414     protocols
1415 "
1416
1417 AVRESAMPLE_COMPONENTS=""
1418 AVUTIL_COMPONENTS=""
1419
1420 COMPONENT_LIST="
1421     $AVCODEC_COMPONENTS
1422     $AVDEVICE_COMPONENTS
1423     $AVFILTER_COMPONENTS
1424     $AVFORMAT_COMPONENTS
1425     $AVRESAMPLE_COMPONENTS
1426     $AVUTIL_COMPONENTS
1427 "
1428
1429 EXAMPLE_LIST="
1430     avio_reading_example
1431     avio_dir_cmd_example
1432     decoding_encoding_example
1433     demuxing_decoding_example
1434     extract_mvs_example
1435     filter_audio_example
1436     filtering_audio_example
1437     filtering_video_example
1438     metadata_example
1439     muxing_example
1440     qsvdec_example
1441     remuxing_example
1442     resampling_audio_example
1443     scaling_video_example
1444     transcode_aac_example
1445     transcoding_example
1446 "
1447
1448 EXTERNAL_LIBRARY_LIST="
1449     avisynth
1450     bzlib
1451     chromaprint
1452     crystalhd
1453     cuda
1454     decklink
1455     frei0r
1456     gcrypt
1457     gmp
1458     gnutls
1459     iconv
1460     jni
1461     ladspa
1462     libass
1463     libbluray
1464     libbs2b
1465     libcaca
1466     libcdio
1467     libcelt
1468     libdc1394
1469     libdcadec
1470     libfaac
1471     libfdk_aac
1472     libflite
1473     libfontconfig
1474     libfreetype
1475     libfribidi
1476     libgme
1477     libgsm
1478     libiec61883
1479     libilbc
1480     libkvazaar
1481     libmfx
1482     libmodplug
1483     libmp3lame
1484     libnut
1485     libopencore_amrnb
1486     libopencore_amrwb
1487     libopencv
1488     libopenh264
1489     libopenjpeg
1490     libopus
1491     libpulse
1492     librtmp
1493     librubberband
1494     libschroedinger
1495     libshine
1496     libsmbclient
1497     libsnappy
1498     libsoxr
1499     libspeex
1500     libssh
1501     libtesseract
1502     libtheora
1503     libtwolame
1504     libutvideo
1505     libv4l2
1506     libvidstab
1507     libvo_amrwbenc
1508     libvorbis
1509     libvpx
1510     libwavpack
1511     libwebp
1512     libx264
1513     libx265
1514     libxavs
1515     libxcb
1516     libxcb_shm
1517     libxcb_shape
1518     libxcb_xfixes
1519     libxvid
1520     libzimg
1521     libzmq
1522     libzvbi
1523     lzma
1524     mediacodec
1525     mmal
1526     netcdf
1527     nvenc
1528     openal
1529     opencl
1530     opengl
1531     openssl
1532     schannel
1533     sdl
1534     securetransport
1535     videotoolbox
1536     x11grab
1537     xlib
1538     zlib
1539 "
1540
1541 DOCUMENT_LIST="
1542     doc
1543     htmlpages
1544     manpages
1545     podpages
1546     txtpages
1547 "
1548
1549 FEATURE_LIST="
1550     ftrapv
1551     gray
1552     hardcoded_tables
1553     runtime_cpudetect
1554     safe_bitstream_reader
1555     shared
1556     small
1557     static
1558     swscale_alpha
1559 "
1560
1561 HWACCEL_LIST="
1562     d3d11va
1563     dxva2
1564     vaapi
1565     vda
1566     vdpau
1567     videotoolbox_hwaccel
1568     xvmc
1569 "
1570
1571 LIBRARY_LIST="
1572     avcodec
1573     avdevice
1574     avfilter
1575     avformat
1576     avresample
1577     avutil
1578     postproc
1579     swresample
1580     swscale
1581 "
1582
1583 LICENSE_LIST="
1584     gpl
1585     nonfree
1586     version3
1587 "
1588
1589 PROGRAM_LIST="
1590     ffplay
1591     ffprobe
1592     ffserver
1593     ffmpeg
1594 "
1595
1596 SUBSYSTEM_LIST="
1597     dct
1598     dwt
1599     error_resilience
1600     faan
1601     fast_unaligned
1602     fft
1603     lsp
1604     lzo
1605     mdct
1606     pixelutils
1607     network
1608     rdft
1609 "
1610
1611 CONFIG_LIST="
1612     $COMPONENT_LIST
1613     $DOCUMENT_LIST
1614     $EXAMPLE_LIST
1615     $EXTERNAL_LIBRARY_LIST
1616     $FEATURE_LIST
1617     $HWACCEL_LIST
1618     $LICENSE_LIST
1619     $LIBRARY_LIST
1620     $PROGRAM_LIST
1621     $SUBSYSTEM_LIST
1622     fontconfig
1623     incompatible_libav_abi
1624     memalign_hack
1625     memory_poisoning
1626     neon_clobber_test
1627     pic
1628     pod2man
1629     raise_major
1630     thumb
1631     valgrind_backtrace
1632     xmm_clobber_test
1633 "
1634
1635 THREADS_LIST="
1636     pthreads
1637     os2threads
1638     w32threads
1639 "
1640
1641 ATOMICS_LIST="
1642     atomics_gcc
1643     atomics_suncc
1644     atomics_win32
1645 "
1646
1647 ARCH_LIST="
1648     aarch64
1649     alpha
1650     arm
1651     avr32
1652     avr32_ap
1653     avr32_uc
1654     bfin
1655     ia64
1656     m68k
1657     mips
1658     mips64
1659     parisc
1660     ppc
1661     ppc64
1662     s390
1663     sh4
1664     sparc
1665     sparc64
1666     tilegx
1667     tilepro
1668     tomi
1669     x86
1670     x86_32
1671     x86_64
1672 "
1673
1674 ARCH_EXT_LIST_ARM="
1675     armv5te
1676     armv6
1677     armv6t2
1678     armv8
1679     neon
1680     vfp
1681     vfpv3
1682     setend
1683 "
1684
1685 ARCH_EXT_LIST_MIPS="
1686     mipsfpu
1687     mips32r2
1688     mips32r5
1689     mips64r2
1690     mips32r6
1691     mips64r6
1692     mipsdsp
1693     mipsdspr2
1694     msa
1695 "
1696
1697 ARCH_EXT_LIST_LOONGSON="
1698     loongson2
1699     loongson3
1700     mmi
1701 "
1702
1703 ARCH_EXT_LIST_X86_SIMD="
1704     aesni
1705     amd3dnow
1706     amd3dnowext
1707     avx
1708     avx2
1709     fma3
1710     fma4
1711     mmx
1712     mmxext
1713     sse
1714     sse2
1715     sse3
1716     sse4
1717     sse42
1718     ssse3
1719     xop
1720 "
1721
1722 ARCH_EXT_LIST_PPC="
1723     altivec
1724     dcbzl
1725     ldbrx
1726     power8
1727     ppc4xx
1728     vsx
1729 "
1730
1731 ARCH_EXT_LIST_X86="
1732     $ARCH_EXT_LIST_X86_SIMD
1733     cpunop
1734     i686
1735 "
1736
1737 ARCH_EXT_LIST="
1738     $ARCH_EXT_LIST_ARM
1739     $ARCH_EXT_LIST_PPC
1740     $ARCH_EXT_LIST_X86
1741     $ARCH_EXT_LIST_MIPS
1742     $ARCH_EXT_LIST_LOONGSON
1743 "
1744
1745 ARCH_FEATURES="
1746     aligned_stack
1747     fast_64bit
1748     fast_clz
1749     fast_cmov
1750     local_aligned_8
1751     local_aligned_16
1752     local_aligned_32
1753     simd_align_16
1754 "
1755
1756 BUILTIN_LIST="
1757     atomic_cas_ptr
1758     atomic_compare_exchange
1759     machine_rw_barrier
1760     MemoryBarrier
1761     mm_empty
1762     rdtsc
1763     sarestart
1764     sem_timedwait
1765     sync_val_compare_and_swap
1766 "
1767 HAVE_LIST_CMDLINE="
1768     inline_asm
1769     symver
1770     yasm
1771 "
1772
1773 HAVE_LIST_PUB="
1774     bigendian
1775     fast_unaligned
1776     incompatible_libav_abi
1777 "
1778
1779 HEADERS_LIST="
1780     alsa_asoundlib_h
1781     altivec_h
1782     arpa_inet_h
1783     asm_types_h
1784     cdio_paranoia_h
1785     cdio_paranoia_paranoia_h
1786     dispatch_dispatch_h
1787     dev_bktr_ioctl_bt848_h
1788     dev_bktr_ioctl_meteor_h
1789     dev_ic_bt8xx_h
1790     dev_video_bktr_ioctl_bt848_h
1791     dev_video_meteor_ioctl_meteor_h
1792     direct_h
1793     dirent_h
1794     dlfcn_h
1795     d3d11_h
1796     dxva_h
1797     ES2_gl_h
1798     gsm_h
1799     io_h
1800     mach_mach_time_h
1801     machine_ioctl_bt848_h
1802     machine_ioctl_meteor_h
1803     malloc_h
1804     opencv2_core_core_c_h
1805     openjpeg_2_1_openjpeg_h
1806     openjpeg_2_0_openjpeg_h
1807     openjpeg_1_5_openjpeg_h
1808     OpenGL_gl3_h
1809     poll_h
1810     sndio_h
1811     soundcard_h
1812     sys_mman_h
1813     sys_param_h
1814     sys_resource_h
1815     sys_select_h
1816     sys_soundcard_h
1817     sys_time_h
1818     sys_un_h
1819     sys_videoio_h
1820     termios_h
1821     udplite_h
1822     unistd_h
1823     valgrind_valgrind_h
1824     windows_h
1825     winsock2_h
1826 "
1827
1828 INTRINSICS_LIST="
1829     intrinsics_neon
1830 "
1831
1832 COMPLEX_FUNCS="
1833     cabs
1834     cexp
1835 "
1836
1837 MATH_FUNCS="
1838     atanf
1839     atan2f
1840     cbrt
1841     cbrtf
1842     copysign
1843     cosf
1844     erf
1845     exp2
1846     exp2f
1847     expf
1848     hypot
1849     isfinite
1850     isinf
1851     isnan
1852     ldexpf
1853     llrint
1854     llrintf
1855     log2
1856     log2f
1857     log10f
1858     lrint
1859     lrintf
1860     powf
1861     rint
1862     round
1863     roundf
1864     sinf
1865     trunc
1866     truncf
1867 "
1868
1869 SYSTEM_FUNCS="
1870     access
1871     aligned_malloc
1872     arc4random
1873     clock_gettime
1874     closesocket
1875     CommandLineToArgvW
1876     CoTaskMemFree
1877     CryptGenRandom
1878     dlopen
1879     fcntl
1880     flt_lim
1881     fork
1882     getaddrinfo
1883     gethrtime
1884     getopt
1885     GetProcessAffinityMask
1886     GetProcessMemoryInfo
1887     GetProcessTimes
1888     getrusage
1889     GetSystemTimeAsFileTime
1890     gettimeofday
1891     glob
1892     glXGetProcAddress
1893     gmtime_r
1894     inet_aton
1895     isatty
1896     jack_port_get_latency_range
1897     kbhit
1898     localtime_r
1899     lstat
1900     lzo1x_999_compress
1901     mach_absolute_time
1902     MapViewOfFile
1903     memalign
1904     mkstemp
1905     mmap
1906     mprotect
1907     nanosleep
1908     PeekNamedPipe
1909     posix_memalign
1910     pthread_cancel
1911     sched_getaffinity
1912     SetConsoleTextAttribute
1913     SetConsoleCtrlHandler
1914     setmode
1915     setrlimit
1916     Sleep
1917     strerror_r
1918     sysconf
1919     sysctl
1920     usleep
1921     UTGetOSTypeFromString
1922     VirtualAlloc
1923     wglGetProcAddress
1924 "
1925
1926 TOOLCHAIN_FEATURES="
1927     as_dn_directive
1928     as_func
1929     as_object_arch
1930     asm_mod_q
1931     attribute_may_alias
1932     attribute_packed
1933     ebp_available
1934     ebx_available
1935     gnu_as
1936     gnu_windres
1937     ibm_asm
1938     inline_asm_direct_symbol_refs
1939     inline_asm_labels
1940     inline_asm_nonlocal_labels
1941     pragma_deprecated
1942     rsync_contimeout
1943     symver_asm_label
1944     symver_gnu_asm
1945     vfp_args
1946     xform_asm
1947     xmm_clobbers
1948 "
1949
1950 TYPES_LIST="
1951     CONDITION_VARIABLE_Ptr
1952     socklen_t
1953     struct_addrinfo
1954     struct_group_source_req
1955     struct_ip_mreq_source
1956     struct_ipv6_mreq
1957     struct_msghdr_msg_flags
1958     struct_pollfd
1959     struct_rusage_ru_maxrss
1960     struct_sctp_event_subscribe
1961     struct_sockaddr_in6
1962     struct_sockaddr_sa_len
1963     struct_sockaddr_storage
1964     struct_stat_st_mtim_tv_nsec
1965     struct_v4l2_frmivalenum_discrete
1966 "
1967
1968 HAVE_LIST="
1969     $ARCH_EXT_LIST
1970     $(add_suffix _external $ARCH_EXT_LIST)
1971     $(add_suffix _inline   $ARCH_EXT_LIST)
1972     $ARCH_FEATURES
1973     $ATOMICS_LIST
1974     $BUILTIN_LIST
1975     $COMPLEX_FUNCS
1976     $HAVE_LIST_CMDLINE
1977     $HAVE_LIST_PUB
1978     $HEADERS_LIST
1979     $INTRINSICS_LIST
1980     $MATH_FUNCS
1981     $SYSTEM_FUNCS
1982     $THREADS_LIST
1983     $TOOLCHAIN_FEATURES
1984     $TYPES_LIST
1985     atomics_native
1986     dos_paths
1987     dxva2_lib
1988     dxva2api_cobj
1989     libc_msvcrt
1990     libdc1394_1
1991     libdc1394_2
1992     makeinfo
1993     makeinfo_html
1994     perl
1995     pod2man
1996     sdl
1997     section_data_rel_ro
1998     texi2html
1999     threads
2000     vaapi_x11
2001     vdpau_x11
2002     winrt
2003     xlib
2004 "
2005
2006 # options emitted with CONFIG_ prefix but not available on the command line
2007 CONFIG_EXTRA="
2008     aandcttables
2009     ac3dsp
2010     audio_frame_queue
2011     audiodsp
2012     blockdsp
2013     bswapdsp
2014     cabac
2015     dirac_parse
2016     dvprofile
2017     exif
2018     faandct
2019     faanidct
2020     fdctdsp
2021     flacdsp
2022     fmtconvert
2023     frame_thread_encoder
2024     g722dsp
2025     golomb
2026     gplv3
2027     h263dsp
2028     h264chroma
2029     h264dsp
2030     h264pred
2031     h264qpel
2032     hpeldsp
2033     huffman
2034     huffyuvdsp
2035     huffyuvencdsp
2036     idctdsp
2037     iirfilter
2038     imdct15
2039     intrax8
2040     iso_media
2041     ividsp
2042     jpegtables
2043     lgplv3
2044     libx262
2045     llauddsp
2046     llviddsp
2047     lpc
2048     lzf
2049     me_cmp
2050     mpeg_er
2051     mpegaudio
2052     mpegaudiodsp
2053     mpegvideo
2054     mpegvideoenc
2055     mss34dsp
2056     pixblockdsp
2057     qpeldsp
2058     qsv
2059     qsvdec
2060     qsvenc
2061     rangecoder
2062     riffdec
2063     riffenc
2064     rtpdec
2065     rtpenc_chain
2066     rv34dsp
2067     sinewin
2068     snappy
2069     startcode
2070     texturedsp
2071     texturedspenc
2072     tpeldsp
2073     vc1dsp
2074     videodsp
2075     vp3dsp
2076     vp56dsp
2077     vp8dsp
2078     wma_freqs
2079     wmv2dsp
2080 "
2081
2082 CMDLINE_SELECT="
2083     $ARCH_EXT_LIST
2084     $CONFIG_LIST
2085     $HAVE_LIST_CMDLINE
2086     $THREADS_LIST
2087     asm
2088     cross_compile
2089     debug
2090     extra_warnings
2091     logging
2092     lto
2093     optimizations
2094     rpath
2095     stripping
2096 "
2097
2098 PATHS_LIST="
2099     bindir
2100     datadir
2101     docdir
2102     incdir
2103     libdir
2104     mandir
2105     pkgconfigdir
2106     prefix
2107     shlibdir
2108     install_name_dir
2109 "
2110
2111 CMDLINE_SET="
2112     $PATHS_LIST
2113     ar
2114     arch
2115     as
2116     assert_level
2117     build_suffix
2118     cc
2119     objcc
2120     cpu
2121     cross_prefix
2122     custom_allocator
2123     cxx
2124     dep_cc
2125     doxygen
2126     env
2127     extra_version
2128     gas
2129     host_cc
2130     host_cflags
2131     host_ld
2132     host_ldflags
2133     host_libs
2134     host_os
2135     install
2136     ld
2137     logfile
2138     malloc_prefix
2139     nm
2140     optflags
2141     pkg_config
2142     pkg_config_flags
2143     progs_suffix
2144     random_seed
2145     ranlib
2146     samples
2147     strip
2148     sws_max_filter_size
2149     sysinclude
2150     sysroot
2151     target_exec
2152     target_os
2153     target_path
2154     target_samples
2155     tempprefix
2156     toolchain
2157     valgrind
2158     yasmexe
2159 "
2160
2161 CMDLINE_APPEND="
2162     extra_cflags
2163     extra_cxxflags
2164     extra_objcflags
2165     host_cppflags
2166 "
2167
2168 # code dependency declarations
2169
2170 # architecture extensions
2171
2172 armv5te_deps="arm"
2173 armv6_deps="arm"
2174 armv6t2_deps="arm"
2175 armv8_deps="aarch64"
2176 neon_deps_any="aarch64 arm"
2177 intrinsics_neon_deps="neon"
2178 vfp_deps_any="aarch64 arm"
2179 vfpv3_deps="vfp"
2180 setend_deps="arm"
2181
2182 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2183
2184 mipsfpu_deps="mips"
2185 mipsdsp_deps="mips"
2186 mipsdspr2_deps="mips"
2187 mips32r2_deps="mips"
2188 mips32r5_deps="mips"
2189 mips32r6_deps="mips"
2190 mips64r2_deps="mips"
2191 mips64r6_deps="mips"
2192 msa_deps="mipsfpu"
2193 mmi_deps="mips"
2194
2195 altivec_deps="ppc"
2196 dcbzl_deps="ppc"
2197 ldbrx_deps="ppc"
2198 ppc4xx_deps="ppc"
2199 vsx_deps="altivec"
2200 power8_deps="vsx"
2201
2202 cpunop_deps="i686"
2203 x86_64_select="i686"
2204 x86_64_suggest="fast_cmov"
2205
2206 amd3dnow_deps="mmx"
2207 amd3dnowext_deps="amd3dnow"
2208 i686_deps="x86"
2209 mmx_deps="x86"
2210 mmxext_deps="mmx"
2211 sse_deps="mmxext"
2212 sse2_deps="sse"
2213 sse3_deps="sse2"
2214 ssse3_deps="sse3"
2215 sse4_deps="ssse3"
2216 sse42_deps="sse4"
2217 aesni_deps="sse42"
2218 avx_deps="sse42"
2219 xop_deps="avx"
2220 fma3_deps="avx"
2221 fma4_deps="avx"
2222 avx2_deps="avx"
2223
2224 mmx_external_deps="yasm"
2225 mmx_inline_deps="inline_asm"
2226 mmx_suggest="mmx_external mmx_inline"
2227
2228 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2229     eval dep=\$${ext}_deps
2230     eval ${ext}_external_deps='"${dep}_external"'
2231     eval ${ext}_inline_deps='"${dep}_inline"'
2232     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2233 done
2234
2235 aligned_stack_if_any="aarch64 ppc x86"
2236 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2237 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2238 fast_unaligned_if_any="aarch64 ppc x86"
2239 simd_align_16_if_any="altivec neon sse"
2240
2241 # system capabilities
2242 symver_if_any="symver_asm_label symver_gnu_asm"
2243 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2244
2245 # threading support
2246 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2247 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2248 atomics_win32_if="MemoryBarrier"
2249 atomics_native_if_any="$ATOMICS_LIST"
2250 w32threads_deps="atomics_native"
2251 threads_if_any="$THREADS_LIST"
2252
2253 # subsystems
2254 dct_select="rdft"
2255 dirac_parse_select="golomb"
2256 error_resilience_select="me_cmp"
2257 faandct_deps="faan fdctdsp"
2258 faanidct_deps="faan idctdsp"
2259 h264dsp_select="startcode"
2260 frame_thread_encoder_deps="encoders threads"
2261 intrax8_select="error_resilience"
2262 mdct_select="fft"
2263 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2264 mpeg_er_select="error_resilience"
2265 mpegaudio_select="mpegaudiodsp"
2266 mpegaudiodsp_select="dct"
2267 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2268 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2269 qsvdec_select="qsv"
2270 qsvenc_select="qsv"
2271 vc1dsp_select="h264chroma qpeldsp startcode"
2272 rdft_select="fft"
2273
2274 # decoders / encoders
2275 aac_decoder_select="imdct15 mdct sinewin"
2276 aac_fixed_decoder_select="mdct sinewin"
2277 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2278 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2279 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2280 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2281 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2283 adpcm_g722_decoder_select="g722dsp"
2284 adpcm_g722_encoder_select="g722dsp"
2285 aic_decoder_select="golomb idctdsp"
2286 alac_encoder_select="lpc"
2287 als_decoder_select="bswapdsp"
2288 amrnb_decoder_select="lsp"
2289 amrwb_decoder_select="lsp"
2290 amv_decoder_select="sp5x_decoder exif"
2291 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2292 ape_decoder_select="bswapdsp llauddsp"
2293 apng_decoder_select="zlib"
2294 apng_encoder_select="huffyuvencdsp zlib"
2295 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2296 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2297 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2298 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2299 atrac1_decoder_select="mdct sinewin"
2300 atrac3_decoder_select="mdct"
2301 atrac3p_decoder_select="mdct sinewin"
2302 avrn_decoder_select="exif jpegtables"
2303 bink_decoder_select="blockdsp hpeldsp"
2304 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2305 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2306 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2307 cllc_decoder_select="bswapdsp"
2308 comfortnoise_encoder_select="lpc"
2309 cook_decoder_select="audiodsp mdct sinewin"
2310 cscd_decoder_select="lzo"
2311 cscd_decoder_suggest="zlib"
2312 dca_decoder_select="mdct"
2313 dds_decoder_select="texturedsp"
2314 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2315 dnxhd_decoder_select="blockdsp idctdsp"
2316 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2317 dvvideo_decoder_select="dvprofile idctdsp"
2318 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2319 dxa_decoder_select="zlib"
2320 dxv_decoder_select="lzf texturedsp"
2321 eac3_decoder_select="ac3_decoder"
2322 eac3_encoder_select="ac3_encoder"
2323 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2324 eatgq_decoder_select="aandcttables"
2325 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2326 exr_decoder_select="zlib"
2327 ffv1_decoder_select="golomb rangecoder"
2328 ffv1_encoder_select="rangecoder"
2329 ffvhuff_decoder_select="huffyuv_decoder"
2330 ffvhuff_encoder_select="huffyuv_encoder"
2331 fic_decoder_select="golomb"
2332 flac_decoder_select="flacdsp golomb"
2333 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2334 flashsv2_decoder_select="zlib"
2335 flashsv2_encoder_select="zlib"
2336 flashsv_decoder_select="zlib"
2337 flashsv_encoder_select="zlib"
2338 flv_decoder_select="h263_decoder"
2339 flv_encoder_select="h263_encoder"
2340 fourxm_decoder_select="blockdsp bswapdsp"
2341 fraps_decoder_select="bswapdsp huffman"
2342 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2343 g729_decoder_select="audiodsp"
2344 h261_decoder_select="mpegvideo"
2345 h261_encoder_select="aandcttables mpegvideoenc"
2346 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2347 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2348 h263i_decoder_select="h263_decoder"
2349 h263p_decoder_select="h263_decoder"
2350 h263p_encoder_select="h263_encoder"
2351 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2352 h264_decoder_suggest="error_resilience"
2353 h264_qsv_decoder_deps="libmfx"
2354 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2355 h264_qsv_encoder_deps="libmfx"
2356 h264_qsv_encoder_select="qsvenc"
2357 hap_decoder_select="snappy texturedsp"
2358 hap_encoder_deps="libsnappy"
2359 hap_encoder_select="texturedspenc"
2360 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2361 hevc_qsv_decoder_deps="libmfx"
2362 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2363 hevc_qsv_encoder_deps="libmfx"
2364 hevc_qsv_encoder_select="qsvenc"
2365 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2366 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2367 iac_decoder_select="imc_decoder"
2368 imc_decoder_select="bswapdsp fft mdct sinewin"
2369 indeo3_decoder_select="hpeldsp"
2370 indeo4_decoder_select="ividsp"
2371 indeo5_decoder_select="ividsp"
2372 interplay_video_decoder_select="hpeldsp"
2373 jpegls_decoder_select="golomb mjpeg_decoder"
2374 jpegls_encoder_select="golomb"
2375 jv_decoder_select="blockdsp"
2376 lagarith_decoder_select="huffyuvdsp"
2377 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2378 loco_decoder_select="golomb"
2379 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2380 metasound_decoder_select="lsp mdct sinewin"
2381 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2382 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2383 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2384 mjpegb_decoder_select="mjpeg_decoder"
2385 mlp_decoder_select="mlp_parser"
2386 motionpixels_decoder_select="bswapdsp"
2387 mp1_decoder_select="mpegaudio"
2388 mp1float_decoder_select="mpegaudio"
2389 mp2_decoder_select="mpegaudio"
2390 mp2float_decoder_select="mpegaudio"
2391 mp3_decoder_select="mpegaudio"
2392 mp3adu_decoder_select="mpegaudio"
2393 mp3adufloat_decoder_select="mpegaudio"
2394 mp3float_decoder_select="mpegaudio"
2395 mp3on4_decoder_select="mpegaudio"
2396 mp3on4float_decoder_select="mpegaudio"
2397 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2398 mpc8_decoder_select="mpegaudiodsp"
2399 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2400 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2401 mpegvideo_decoder_select="mpegvideo"
2402 mpeg1video_decoder_select="mpegvideo"
2403 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2404 mpeg2video_decoder_select="mpegvideo"
2405 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2406 mpeg2_qsv_decoder_deps="libmfx"
2407 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2408 mpeg2_qsv_encoder_deps="libmfx"
2409 mpeg2_qsv_encoder_select="qsvenc"
2410 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2411 mpeg4_encoder_select="h263_encoder"
2412 msa1_decoder_select="mss34dsp"
2413 msmpeg4v1_decoder_select="h263_decoder"
2414 msmpeg4v2_decoder_select="h263_decoder"
2415 msmpeg4v2_encoder_select="h263_encoder"
2416 msmpeg4v3_decoder_select="h263_decoder"
2417 msmpeg4v3_encoder_select="h263_encoder"
2418 mss2_decoder_select="vc1_decoder mpegvideo"
2419 mts2_decoder_select="mss34dsp"
2420 mxpeg_decoder_select="mjpeg_decoder"
2421 nellymoser_decoder_select="mdct sinewin"
2422 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2423 nuv_decoder_select="idctdsp lzo"
2424 on2avc_decoder_select="mdct"
2425 opus_decoder_deps="swresample"
2426 opus_decoder_select="imdct15"
2427 png_decoder_select="zlib"
2428 png_encoder_select="huffyuvencdsp zlib"
2429 prores_decoder_select="blockdsp idctdsp"
2430 prores_encoder_select="fdctdsp"
2431 qcelp_decoder_select="lsp"
2432 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2433 ra_144_decoder_select="audiodsp"
2434 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2435 ralf_decoder_select="golomb"
2436 rawvideo_decoder_select="bswapdsp"
2437 rscc_decoder_select="zlib"
2438 rtjpeg_decoder_select="me_cmp"
2439 rv10_decoder_select="h263_decoder"
2440 rv10_encoder_select="h263_encoder"
2441 rv20_decoder_select="h263_decoder"
2442 rv20_encoder_select="h263_encoder"
2443 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2445 screenpresso_decoder_select="zlib"
2446 shorten_decoder_select="golomb"
2447 sipr_decoder_select="lsp"
2448 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2449 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2450 sonic_decoder_select="golomb rangecoder"
2451 sonic_encoder_select="golomb rangecoder"
2452 sonic_ls_encoder_select="golomb rangecoder"
2453 sp5x_decoder_select="mjpeg_decoder"
2454 svq1_decoder_select="hpeldsp"
2455 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2456 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2457 svq3_decoder_suggest="zlib"
2458 tak_decoder_select="audiodsp"
2459 tdsc_decoder_select="zlib mjpeg_decoder"
2460 theora_decoder_select="vp3_decoder"
2461 thp_decoder_select="mjpeg_decoder"
2462 tiff_decoder_suggest="zlib lzma"
2463 tiff_encoder_suggest="zlib"
2464 truehd_decoder_select="mlp_parser"
2465 truemotion2_decoder_select="bswapdsp"
2466 truespeech_decoder_select="bswapdsp"
2467 tscc_decoder_select="zlib"
2468 twinvq_decoder_select="mdct lsp sinewin"
2469 txd_decoder_select="texturedsp"
2470 utvideo_decoder_select="bswapdsp"
2471 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2472 vble_decoder_select="huffyuvdsp"
2473 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2474 vc1_qsv_decoder_deps="libmfx"
2475 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2476 vc1image_decoder_select="vc1_decoder"
2477 vorbis_decoder_select="mdct"
2478 vorbis_encoder_select="mdct"
2479 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2480 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2481 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2482 vp6a_decoder_select="vp6_decoder"
2483 vp6f_decoder_select="vp6_decoder"
2484 vp7_decoder_select="h264pred videodsp vp8dsp"
2485 vp8_decoder_select="h264pred videodsp vp8dsp"
2486 vp9_decoder_select="videodsp vp9_parser"
2487 webp_decoder_select="vp8_decoder exif"
2488 wmalossless_decoder_select="llauddsp"
2489 wmapro_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_decoder_select="mdct sinewin wma_freqs"
2491 wmav1_encoder_select="mdct sinewin wma_freqs"
2492 wmav2_decoder_select="mdct sinewin wma_freqs"
2493 wmav2_encoder_select="mdct sinewin wma_freqs"
2494 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2495 wmv1_decoder_select="h263_decoder"
2496 wmv1_encoder_select="h263_encoder"
2497 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2498 wmv2_encoder_select="h263_encoder wmv2dsp"
2499 wmv3_decoder_select="vc1_decoder"
2500 wmv3image_decoder_select="wmv3_decoder"
2501 xma1_decoder_select="wmapro_decoder"
2502 xma2_decoder_select="wmapro_decoder"
2503 zerocodec_decoder_select="zlib"
2504 zlib_decoder_select="zlib"
2505 zlib_encoder_select="zlib"
2506 zmbv_decoder_select="zlib"
2507 zmbv_encoder_select="zlib"
2508
2509 # hardware accelerators
2510 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2511 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2512 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2513 vaapi_deps="va_va_h"
2514 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2515 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2516 vda_deps="vda_framework pthreads"
2517 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2518 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2519 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2520 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2521 xvmc_deps="X11_extensions_XvMClib_h"
2522
2523 h263_vaapi_hwaccel_deps="vaapi"
2524 h263_vaapi_hwaccel_select="h263_decoder"
2525 h263_videotoolbox_hwaccel_deps="videotoolbox"
2526 h263_videotoolbox_hwaccel_select="h263_decoder"
2527 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2528 h264_d3d11va_hwaccel_deps="d3d11va"
2529 h264_d3d11va_hwaccel_select="h264_decoder"
2530 h264_dxva2_hwaccel_deps="dxva2"
2531 h264_dxva2_hwaccel_select="h264_decoder"
2532 h264_mediacodec_decoder_deps="mediacodec"
2533 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2534 h264_mmal_decoder_deps="mmal"
2535 h264_mmal_decoder_select="mmal"
2536 h264_mmal_hwaccel_deps="mmal"
2537 h264_qsv_hwaccel_deps="libmfx"
2538 h264_vaapi_hwaccel_deps="vaapi"
2539 h264_vaapi_hwaccel_select="h264_decoder"
2540 h264_vda_decoder_deps="vda"
2541 h264_vda_decoder_select="h264_decoder"
2542 h264_vda_hwaccel_deps="vda"
2543 h264_vda_hwaccel_select="h264_decoder"
2544 h264_vda_old_hwaccel_deps="vda"
2545 h264_vda_old_hwaccel_select="h264_decoder"
2546 h264_vdpau_decoder_deps="vdpau"
2547 h264_vdpau_decoder_select="h264_decoder"
2548 h264_vdpau_hwaccel_deps="vdpau"
2549 h264_vdpau_hwaccel_select="h264_decoder"
2550 h264_videotoolbox_hwaccel_deps="videotoolbox"
2551 h264_videotoolbox_hwaccel_select="h264_decoder"
2552 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2553 hevc_d3d11va_hwaccel_select="hevc_decoder"
2554 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2555 hevc_dxva2_hwaccel_select="hevc_decoder"
2556 hevc_qsv_hwaccel_deps="libmfx"
2557 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2558 hevc_vaapi_hwaccel_select="hevc_decoder"
2559 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2560 hevc_vdpau_hwaccel_select="hevc_decoder"
2561 mpeg_vdpau_decoder_deps="vdpau"
2562 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2563 mpeg_xvmc_hwaccel_deps="xvmc"
2564 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2565 mpeg1_vdpau_decoder_deps="vdpau"
2566 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2567 mpeg1_vdpau_hwaccel_deps="vdpau"
2568 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2569 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2570 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2571 mpeg1_xvmc_hwaccel_deps="xvmc"
2572 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2573 mpeg2_crystalhd_decoder_select="crystalhd"
2574 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2575 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2576 mpeg2_dxva2_hwaccel_deps="dxva2"
2577 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2578 mpeg2_mmal_decoder_deps="mmal"
2579 mpeg2_mmal_decoder_select="mmal"
2580 mpeg2_mmal_hwaccel_deps="mmal"
2581 mpeg2_qsv_hwaccel_deps="libmfx"
2582 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2583 mpeg2_vaapi_hwaccel_deps="vaapi"
2584 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2585 mpeg2_vdpau_hwaccel_deps="vdpau"
2586 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2587 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2588 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2589 mpeg2_xvmc_hwaccel_deps="xvmc"
2590 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2591 mpeg4_crystalhd_decoder_select="crystalhd"
2592 mpeg4_mmal_decoder_deps="mmal"
2593 mpeg4_mmal_decoder_select="mmal"
2594 mpeg4_mmal_hwaccel_deps="mmal"
2595 mpeg4_vaapi_hwaccel_deps="vaapi"
2596 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2597 mpeg4_vdpau_decoder_deps="vdpau"
2598 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2599 mpeg4_vdpau_hwaccel_deps="vdpau"
2600 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2601 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2602 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2603 msmpeg4_crystalhd_decoder_select="crystalhd"
2604 vc1_crystalhd_decoder_select="crystalhd"
2605 vc1_d3d11va_hwaccel_deps="d3d11va"
2606 vc1_d3d11va_hwaccel_select="vc1_decoder"
2607 vc1_dxva2_hwaccel_deps="dxva2"
2608 vc1_dxva2_hwaccel_select="vc1_decoder"
2609 vc1_mmal_decoder_deps="mmal"
2610 vc1_mmal_decoder_select="mmal"
2611 vc1_mmal_hwaccel_deps="mmal"
2612 vc1_qsv_hwaccel_deps="libmfx"
2613 vc1_qsv_hwaccel_select="qsvdec_vc1"
2614 vc1_vaapi_hwaccel_deps="vaapi"
2615 vc1_vaapi_hwaccel_select="vc1_decoder"
2616 vc1_vdpau_decoder_deps="vdpau"
2617 vc1_vdpau_decoder_select="vc1_decoder"
2618 vc1_vdpau_hwaccel_deps="vdpau"
2619 vc1_vdpau_hwaccel_select="vc1_decoder"
2620 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2621 vp9_d3d11va_hwaccel_select="vp9_decoder"
2622 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2623 vp9_dxva2_hwaccel_select="vp9_decoder"
2624 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2625 vp9_vaapi_hwaccel_select="vp9_decoder"
2626 wmv3_crystalhd_decoder_select="crystalhd"
2627 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2628 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2629 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2630 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2631 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2632
2633 # parsers
2634 h264_parser_select="h264_decoder"
2635 hevc_parser_select="golomb"
2636 mpegvideo_parser_select="mpegvideo"
2637 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2638 vc1_parser_select="vc1dsp"
2639
2640 # bitstream_filters
2641 mjpeg2jpeg_bsf_select="jpegtables"
2642
2643 # external libraries
2644 chromaprint_muxer_deps="chromaprint"
2645 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2646 h264_videotoolbox_encoder_select="bzlib zlib iconv"
2647 libcelt_decoder_deps="libcelt"
2648 libdcadec_decoder_deps="libdcadec"
2649 libfaac_encoder_deps="libfaac"
2650 libfaac_encoder_select="audio_frame_queue"
2651 libfdk_aac_decoder_deps="libfdk_aac"
2652 libfdk_aac_encoder_deps="libfdk_aac"
2653 libfdk_aac_encoder_select="audio_frame_queue"
2654 libgme_demuxer_deps="libgme"
2655 libgsm_decoder_deps="libgsm"
2656 libgsm_encoder_deps="libgsm"
2657 libgsm_ms_decoder_deps="libgsm"
2658 libgsm_ms_encoder_deps="libgsm"
2659 libilbc_decoder_deps="libilbc"
2660 libilbc_encoder_deps="libilbc"
2661 libkvazaar_encoder_deps="libkvazaar"
2662 libmodplug_demuxer_deps="libmodplug"
2663 libmp3lame_encoder_deps="libmp3lame"
2664 libmp3lame_encoder_select="audio_frame_queue"
2665 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2666 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2667 libopencore_amrnb_encoder_select="audio_frame_queue"
2668 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2669 libopenh264_encoder_deps="libopenh264"
2670 libopenjpeg_decoder_deps="libopenjpeg"
2671 libopenjpeg_encoder_deps="libopenjpeg"
2672 libopus_decoder_deps="libopus"
2673 libopus_encoder_deps="libopus"
2674 libopus_encoder_select="audio_frame_queue"
2675 libschroedinger_decoder_deps="libschroedinger"
2676 libschroedinger_encoder_deps="libschroedinger"
2677 libshine_encoder_deps="libshine"
2678 libshine_encoder_select="audio_frame_queue"
2679 libspeex_decoder_deps="libspeex"
2680 libspeex_encoder_deps="libspeex"
2681 libspeex_encoder_select="audio_frame_queue"
2682 libtheora_encoder_deps="libtheora"
2683 libtwolame_encoder_deps="libtwolame"
2684 libutvideo_decoder_deps="libutvideo"
2685 libutvideo_encoder_deps="libutvideo"
2686 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2687 libvorbis_decoder_deps="libvorbis"
2688 libvorbis_encoder_deps="libvorbis"
2689 libvorbis_encoder_select="audio_frame_queue"
2690 libvpx_vp8_decoder_deps="libvpx"
2691 libvpx_vp8_encoder_deps="libvpx"
2692 libvpx_vp9_decoder_deps="libvpx"
2693 libvpx_vp9_encoder_deps="libvpx"
2694 libwavpack_encoder_deps="libwavpack"
2695 libwebp_encoder_deps="libwebp"
2696 libwebp_anim_encoder_deps="libwebp"
2697 libx262_encoder_deps="libx262"
2698 libx264_encoder_deps="libx264"
2699 libx264rgb_encoder_deps="libx264"
2700 libx264rgb_encoder_select="libx264_encoder"
2701 libx265_encoder_deps="libx265"
2702 libxavs_encoder_deps="libxavs"
2703 libxvid_encoder_deps="libxvid"
2704 libzvbi_teletext_decoder_deps="libzvbi"
2705 nvenc_encoder_deps="nvenc"
2706 nvenc_h264_encoder_deps="nvenc"
2707 nvenc_hevc_encoder_deps="nvenc"
2708 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2709 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2710 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2711 videotoolbox_encoder_suggest="vda_framework"
2712
2713 # demuxers / muxers
2714 ac3_demuxer_select="ac3_parser"
2715 asf_demuxer_select="riffdec"
2716 asf_o_demuxer_select="riffdec"
2717 asf_muxer_select="riffenc"
2718 asf_stream_muxer_select="asf_muxer"
2719 avi_demuxer_select="iso_media riffdec exif"
2720 avi_muxer_select="riffenc"
2721 avisynth_demuxer_deps="avisynth"
2722 avisynth_demuxer_select="riffdec"
2723 caf_demuxer_select="iso_media riffdec"
2724 dash_muxer_select="mp4_muxer"
2725 dirac_demuxer_select="dirac_parser"
2726 dts_demuxer_select="dca_parser"
2727 dtshd_demuxer_select="dca_parser"
2728 dv_demuxer_select="dvprofile"
2729 dv_muxer_select="dvprofile"
2730 dxa_demuxer_select="riffdec"
2731 eac3_demuxer_select="ac3_parser"
2732 f4v_muxer_select="mov_muxer"
2733 flac_demuxer_select="flac_parser"
2734 hds_muxer_select="flv_muxer"
2735 hls_muxer_select="mpegts_muxer"
2736 image2_alias_pix_demuxer_select="image2_demuxer"
2737 image2_brender_pix_demuxer_select="image2_demuxer"
2738 ipod_muxer_select="mov_muxer"
2739 ismv_muxer_select="mov_muxer"
2740 libnut_demuxer_deps="libnut"
2741 libnut_muxer_deps="libnut"
2742 matroska_audio_muxer_select="matroska_muxer"
2743 matroska_demuxer_select="iso_media riffdec"
2744 matroska_demuxer_suggest="bzlib lzo zlib"
2745 matroska_muxer_select="iso_media riffenc"
2746 mmf_muxer_select="riffenc"
2747 mov_demuxer_select="iso_media riffdec"
2748 mov_demuxer_suggest="zlib"
2749 mov_muxer_select="iso_media riffenc rtpenc_chain"
2750 mp3_demuxer_select="mpegaudio_parser"
2751 mp4_muxer_select="mov_muxer"
2752 mpegts_demuxer_select="iso_media"
2753 mpegts_muxer_select="adts_muxer latm_muxer"
2754 mpegtsraw_demuxer_select="mpegts_demuxer"
2755 mxf_d10_muxer_select="mxf_muxer"
2756 mxf_opatom_muxer_select="mxf_muxer"
2757 nut_muxer_select="riffenc"
2758 nuv_demuxer_select="riffdec"
2759 oga_muxer_select="ogg_muxer"
2760 ogg_demuxer_select="dirac_parse"
2761 opus_muxer_select="ogg_muxer"
2762 psp_muxer_select="mov_muxer"
2763 rtp_demuxer_select="sdp_demuxer"
2764 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2765 rtsp_demuxer_select="http_protocol rtpdec"
2766 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2767 sap_demuxer_select="sdp_demuxer"
2768 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2769 sdp_demuxer_select="rtpdec"
2770 smoothstreaming_muxer_select="ismv_muxer"
2771 spdif_muxer_select="aac_parser"
2772 spx_muxer_select="ogg_muxer"
2773 swf_demuxer_suggest="zlib"
2774 tak_demuxer_select="tak_parser"
2775 tg2_muxer_select="mov_muxer"
2776 tgp_muxer_select="mov_muxer"
2777 vobsub_demuxer_select="mpegps_demuxer"
2778 w64_demuxer_select="wav_demuxer"
2779 w64_muxer_select="wav_muxer"
2780 wav_demuxer_select="riffdec"
2781 wav_muxer_select="riffenc"
2782 webm_muxer_select="iso_media riffenc"
2783 webm_dash_manifest_demuxer_select="matroska_demuxer"
2784 wtv_demuxer_select="mpegts_demuxer riffdec"
2785 wtv_muxer_select="mpegts_muxer riffenc"
2786 xmv_demuxer_select="riffdec"
2787 xwma_demuxer_select="riffdec"
2788
2789 # indevs / outdevs
2790 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2791 alsa_outdev_deps="alsa_asoundlib_h"
2792 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2793 avfoundation_indev_select="avfoundation"
2794 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2795 caca_outdev_deps="libcaca"
2796 decklink_indev_deps="decklink pthreads"
2797 decklink_indev_extralibs="-lstdc++"
2798 decklink_outdev_deps="decklink pthreads"
2799 decklink_outdev_extralibs="-lstdc++"
2800 dshow_indev_deps="IBaseFilter"
2801 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2802 dv1394_indev_deps="dv1394"
2803 dv1394_indev_select="dv_demuxer"
2804 fbdev_indev_deps="linux_fb_h"
2805 fbdev_outdev_deps="linux_fb_h"
2806 gdigrab_indev_deps="CreateDIBSection"
2807 gdigrab_indev_extralibs="-lgdi32"
2808 gdigrab_indev_select="bmp_decoder"
2809 iec61883_indev_deps="libiec61883"
2810 jack_indev_deps="jack_jack_h"
2811 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2812 lavfi_indev_deps="avfilter"
2813 libcdio_indev_deps="libcdio"
2814 libdc1394_indev_deps="libdc1394"
2815 libv4l2_indev_deps="libv4l2"
2816 openal_indev_deps="openal"
2817 opengl_outdev_deps="opengl"
2818 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2819 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2820 pulse_indev_deps="libpulse"
2821 pulse_outdev_deps="libpulse"
2822 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2823 qtkit_indev_select="qtkit"
2824 sdl_outdev_deps="sdl"
2825 sndio_indev_deps="sndio_h"
2826 sndio_outdev_deps="sndio_h"
2827 v4l_indev_deps="linux_videodev_h"
2828 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2829 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2830 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2831 vfwcap_indev_extralibs="-lavicap32"
2832 x11grab_indev_deps="x11grab"
2833 x11grab_xcb_indev_deps="libxcb"
2834 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2835 xv_outdev_extralibs="-lXv -lX11 -lXext"
2836
2837 # protocols
2838 async_protocol_deps="threads"
2839 bluray_protocol_deps="libbluray"
2840 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2841 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2842 ffrtmpcrypt_protocol_select="tcp_protocol"
2843 ffrtmphttp_protocol_deps="!librtmp_protocol"
2844 ffrtmphttp_protocol_select="http_protocol"
2845 ftp_protocol_select="tcp_protocol"
2846 gopher_protocol_select="network"
2847 http_protocol_select="tcp_protocol"
2848 httpproxy_protocol_select="tcp_protocol"
2849 https_protocol_select="tls_protocol"
2850 icecast_protocol_select="http_protocol"
2851 librtmp_protocol_deps="librtmp"
2852 librtmpe_protocol_deps="librtmp"
2853 librtmps_protocol_deps="librtmp"
2854 librtmpt_protocol_deps="librtmp"
2855 librtmpte_protocol_deps="librtmp"
2856 libsmbclient_protocol_deps="libsmbclient gplv3"
2857 libssh_protocol_deps="libssh"
2858 mmsh_protocol_select="http_protocol"
2859 mmst_protocol_select="network"
2860 rtmp_protocol_deps="!librtmp_protocol"
2861 rtmp_protocol_select="tcp_protocol"
2862 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2863 rtmps_protocol_deps="!librtmp_protocol"
2864 rtmps_protocol_select="tls_protocol"
2865 rtmpt_protocol_select="ffrtmphttp_protocol"
2866 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2867 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2868 rtp_protocol_select="udp_protocol"
2869 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2870 sctp_protocol_select="network"
2871 srtp_protocol_select="rtp_protocol"
2872 tcp_protocol_select="network"
2873 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2874 tls_gnutls_protocol_select="tcp_protocol"
2875 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2876 tls_openssl_protocol_select="tcp_protocol"
2877 tls_schannel_protocol_deps="schannel"
2878 tls_schannel_protocol_select="tcp_protocol"
2879 tls_securetransport_protocol_deps="securetransport"
2880 tls_securetransport_protocol_select="tcp_protocol"
2881 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2882 udp_protocol_select="network"
2883 udplite_protocol_select="network"
2884 unix_protocol_deps="sys_un_h"
2885 unix_protocol_select="network"
2886
2887 # filters
2888 afftfilt_filter_deps="avcodec"
2889 afftfilt_filter_select="fft"
2890 amovie_filter_deps="avcodec avformat"
2891 aresample_filter_deps="swresample"
2892 ass_filter_deps="libass"
2893 asyncts_filter_deps="avresample"
2894 atempo_filter_deps="avcodec"
2895 atempo_filter_select="rdft"
2896 azmq_filter_deps="libzmq"
2897 blackframe_filter_deps="gpl"
2898 boxblur_filter_deps="gpl"
2899 bs2b_filter_deps="libbs2b"
2900 colormatrix_filter_deps="gpl"
2901 cover_rect_filter_deps="avcodec avformat gpl"
2902 cropdetect_filter_deps="gpl"
2903 delogo_filter_deps="gpl"
2904 deshake_filter_select="pixelutils"
2905 drawtext_filter_deps="libfreetype"
2906 ebur128_filter_deps="gpl"
2907 eq_filter_deps="gpl"
2908 fftfilt_filter_deps="avcodec"
2909 fftfilt_filter_select="rdft"
2910 find_rect_filter_deps="avcodec avformat gpl"
2911 firequalizer_filter_deps="avcodec"
2912 firequalizer_filter_select="rdft"
2913 flite_filter_deps="libflite"
2914 frei0r_filter_deps="frei0r dlopen"
2915 frei0r_src_filter_deps="frei0r dlopen"
2916 fspp_filter_deps="gpl"
2917 geq_filter_deps="gpl"
2918 histeq_filter_deps="gpl"
2919 hqdn3d_filter_deps="gpl"
2920 hwupload_cuda_filter_deps="cuda"
2921 interlace_filter_deps="gpl"
2922 kerndeint_filter_deps="gpl"
2923 ladspa_filter_deps="ladspa dlopen"
2924 mcdeint_filter_deps="avcodec gpl"
2925 movie_filter_deps="avcodec avformat"
2926 mpdecimate_filter_deps="gpl"
2927 mpdecimate_filter_select="pixelutils"
2928 mptestsrc_filter_deps="gpl"
2929 negate_filter_deps="lut_filter"
2930 nnedi_filter_deps="gpl"
2931 ocr_filter_deps="libtesseract"
2932 ocv_filter_deps="libopencv"
2933 owdenoise_filter_deps="gpl"
2934 pan_filter_deps="swresample"
2935 perspective_filter_deps="gpl"
2936 phase_filter_deps="gpl"
2937 pp7_filter_deps="gpl"
2938 pp_filter_deps="gpl postproc"
2939 pullup_filter_deps="gpl"
2940 removelogo_filter_deps="avcodec avformat swscale"
2941 repeatfields_filter_deps="gpl"
2942 resample_filter_deps="avresample"
2943 rubberband_filter_deps="librubberband"
2944 sab_filter_deps="gpl swscale"
2945 scale2ref_filter_deps="swscale"
2946 scale_filter_deps="swscale"
2947 select_filter_select="pixelutils"
2948 showcqt_filter_deps="avcodec avformat swscale"
2949 showcqt_filter_select="fft"
2950 showfreqs_filter_deps="avcodec"
2951 showfreqs_filter_select="fft"
2952 showspectrum_filter_deps="avcodec"
2953 showspectrum_filter_select="fft"
2954 showspectrumpic_filter_deps="avcodec"
2955 showspectrumpic_filter_select="fft"
2956 smartblur_filter_deps="gpl swscale"
2957 sofalizer_filter_deps="netcdf avcodec"
2958 sofalizer_filter_select="fft"
2959 spectrumsynth_filter_deps="avcodec"
2960 spectrumsynth_filter_select="fft"
2961 spp_filter_deps="gpl avcodec"
2962 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2963 stereo3d_filter_deps="gpl"
2964 subtitles_filter_deps="avformat avcodec libass"
2965 super2xsai_filter_deps="gpl"
2966 pixfmts_super2xsai_test_deps="super2xsai_filter"
2967 tinterlace_filter_deps="gpl"
2968 tinterlace_merge_test_deps="tinterlace_filter"
2969 tinterlace_pad_test_deps="tinterlace_filter"
2970 uspp_filter_deps="gpl avcodec"
2971 vidstabdetect_filter_deps="libvidstab"
2972 vidstabtransform_filter_deps="libvidstab"
2973 zmq_filter_deps="libzmq"
2974 zoompan_filter_deps="swscale"
2975 zscale_filter_deps="libzimg"
2976
2977 # examples
2978 avcodec_example_deps="avcodec avutil"
2979 avio_dir_cmd="avformat avutil"
2980 avio_reading="avformat avcodec avutil"
2981 decoding_encoding_example_deps="avcodec avformat avutil"
2982 demuxing_decoding_example_deps="avcodec avformat avutil"
2983 extract_mvs_example_deps="avcodec avformat avutil"
2984 filter_audio_example_deps="avfilter avutil"
2985 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2986 filtering_video_example_deps="avfilter avcodec avformat avutil"
2987 metadata_example_deps="avformat avutil"
2988 muxing_example_deps="avcodec avformat avutil swscale"
2989 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2990 remuxing_example_deps="avcodec avformat avutil"
2991 resampling_audio_example_deps="avutil swresample"
2992 scaling_video_example_deps="avutil swscale"
2993 transcode_aac_example_deps="avcodec avformat swresample"
2994 transcoding_example_deps="avfilter avcodec avformat avutil"
2995
2996 # libraries, in linking order
2997 avcodec_deps="avutil"
2998 avdevice_deps="avformat avcodec avutil"
2999 avfilter_deps="avutil"
3000 avformat_deps="avcodec avutil"
3001 avresample_deps="avutil"
3002 postproc_deps="avutil gpl"
3003 swresample_deps="avutil"
3004 swscale_deps="avutil"
3005
3006 # programs
3007 ffmpeg_deps="avcodec avfilter avformat swresample"
3008 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3009                null_filter
3010                setpts_filter trim_filter"
3011 ffplay_deps="avcodec avformat swscale swresample sdl"
3012 ffplay_libs='$sdl_libs'
3013 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3014 ffprobe_deps="avcodec avformat"
3015 ffserver_deps="avformat fork sarestart"
3016 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3017
3018 # documentation
3019 podpages_deps="perl"
3020 manpages_deps="perl pod2man"
3021 htmlpages_deps="perl"
3022 htmlpages_deps_any="makeinfo_html texi2html"
3023 txtpages_deps="perl makeinfo"
3024 doc_deps_any="manpages htmlpages podpages txtpages"
3025
3026 # default parameters
3027
3028 logfile="config.log"
3029
3030 # installation paths
3031 prefix_default="/usr/local"
3032 bindir_default='${prefix}/bin'
3033 datadir_default='${prefix}/share/ffmpeg'
3034 docdir_default='${prefix}/share/doc/ffmpeg'
3035 incdir_default='${prefix}/include'
3036 libdir_default='${prefix}/lib'
3037 mandir_default='${prefix}/share/man'
3038
3039 # toolchain
3040 ar_default="ar"
3041 cc_default="gcc"
3042 cxx_default="g++"
3043 host_cc_default="gcc"
3044 cp_f="cp -f"
3045 doxygen_default="doxygen"
3046 install="install"
3047 ln_s="ln -s -f"
3048 nm_default="nm -g"
3049 objformat="elf"
3050 pkg_config_default=pkg-config
3051 ranlib_default="ranlib"
3052 strip_default="strip"
3053 yasmexe_default="yasm"
3054 windres_default="windres"
3055
3056 # OS
3057 target_os_default=$(tolower $(uname -s))
3058 host_os=$target_os_default
3059
3060 # machine
3061 if test "$target_os_default" = aix; then
3062     arch_default=$(uname -p)
3063     strip_default="strip -X32_64"
3064 else
3065     arch_default=$(uname -m)
3066 fi
3067 cpu="generic"
3068 intrinsics="none"
3069
3070 # configurable options
3071 enable $PROGRAM_LIST
3072 enable $DOCUMENT_LIST
3073 enable $EXAMPLE_LIST
3074 enable $(filter_out avresample $LIBRARY_LIST)
3075 enable stripping
3076
3077 enable asm
3078 enable debug
3079 enable doc
3080 enable faan faandct faanidct
3081 enable optimizations
3082 enable runtime_cpudetect
3083 enable safe_bitstream_reader
3084 enable static
3085 enable swscale_alpha
3086 enable valgrind_backtrace
3087
3088 sws_max_filter_size_default=256
3089 set_default sws_max_filter_size
3090
3091 # Enable hwaccels by default.
3092 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3093 enable xlib
3094
3095 enable vda_framework videotoolbox videotoolbox_encoder
3096
3097 # build settings
3098 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3099 LIBPREF="lib"
3100 LIBSUF=".a"
3101 FULLNAME='$(NAME)$(BUILDSUF)'
3102 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3103 SLIBPREF="lib"
3104 SLIBSUF=".so"
3105 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3106 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3107 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3108 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3109 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3110 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3111
3112 asflags_filter=echo
3113 cflags_filter=echo
3114 ldflags_filter=echo
3115
3116 AS_C='-c'
3117 AS_O='-o $@'
3118 CC_C='-c'
3119 CC_E='-E -o $@'
3120 CC_O='-o $@'
3121 CXX_C='-c'
3122 CXX_O='-o $@'
3123 OBJCC_C='-c'
3124 OBJCC_E='-E -o $@'
3125 OBJCC_O='-o $@'
3126 LD_O='-o $@'
3127 LD_LIB='-l%'
3128 LD_PATH='-L'
3129 HOSTCC_C='-c'
3130 HOSTCC_E='-E -o $@'
3131 HOSTCC_O='-o $@'
3132 HOSTLD_O='-o $@'
3133
3134 host_libs='-lm'
3135 host_cflags_filter=echo
3136 host_ldflags_filter=echo
3137
3138 target_path='$(CURDIR)'
3139
3140 # since the object filename is not given with the -MM flag, the compiler
3141 # is only able to print the basename, and we must add the path ourselves
3142 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3143 DEPFLAGS='-MM'
3144
3145 # find source path
3146 if test -f configure; then
3147     source_path=.
3148 else
3149     source_path=$(cd $(dirname "$0"); pwd)
3150     case "$source_path" in
3151         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3152     esac
3153     test -e "$source_path/config.h" &&
3154         die "Out of tree builds are impossible with config.h in source dir."
3155 fi
3156
3157 for v in "$@"; do
3158     r=${v#*=}
3159     l=${v%"$r"}
3160     r=$(sh_quote "$r")
3161     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3162 done
3163
3164 find_things(){
3165     thing=$1
3166     pattern=$2
3167     file=$source_path/$3
3168     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3169 }
3170
3171 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3172 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3173 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3174 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3175 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3176 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3177 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3178 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3179 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3180 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3181
3182 find_things_extern(){
3183     thing=$1
3184     pattern=$2
3185     file=$source_path/$3
3186     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3187 }
3188
3189 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3190
3191 ALL_COMPONENTS="
3192     $BSF_LIST
3193     $DECODER_LIST
3194     $DEMUXER_LIST
3195     $ENCODER_LIST
3196     $FILTER_LIST
3197     $HWACCEL_LIST
3198     $INDEV_LIST
3199     $MUXER_LIST
3200     $OUTDEV_LIST
3201     $PARSER_LIST
3202     $PROTOCOL_LIST
3203 "
3204
3205 for n in $COMPONENT_LIST; do
3206     v=$(toupper ${n%s})_LIST
3207     eval enable \$$v
3208     eval ${n}_if_any="\$$v"
3209 done
3210
3211 enable $ARCH_EXT_LIST
3212
3213 die_unknown(){
3214     echo "Unknown option \"$1\"."
3215     echo "See $0 --help for available options."
3216     exit 1
3217 }
3218
3219 print_in_columns() {
3220     cols=$(expr $ncols / 24)
3221     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3222 }
3223
3224 show_list() {
3225     suffix=_$1
3226     shift
3227     echo $* | sed s/$suffix//g | print_in_columns
3228     exit 0
3229 }
3230
3231 rand_list(){
3232     IFS=', '
3233     set -- $*
3234     unset IFS
3235     for thing; do
3236         comp=${thing%:*}
3237         prob=${thing#$comp}
3238         prob=${prob#:}
3239         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3240         echo "prob ${prob:-0.5}"
3241         printf '%s\n' $comp
3242     done
3243 }
3244
3245 do_random(){
3246     action=$1
3247     shift
3248     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3249     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3250 }
3251
3252 for opt do
3253     optval="${opt#*=}"
3254     case "$opt" in
3255         --extra-ldflags=*)
3256             add_ldflags $optval
3257         ;;
3258         --extra-ldexeflags=*)
3259             add_ldexeflags $optval
3260         ;;
3261         --extra-ldlibflags=*)
3262             add_ldlibflags $optval
3263         ;;
3264         --extra-libs=*)
3265             add_extralibs $optval
3266         ;;
3267         --disable-devices)
3268             disable $INDEV_LIST $OUTDEV_LIST
3269         ;;
3270         --enable-debug=*)
3271             debuglevel="$optval"
3272         ;;
3273         --disable-programs)
3274             disable $PROGRAM_LIST
3275         ;;
3276         --disable-everything)
3277             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3278         ;;
3279         --disable-all)
3280             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3281             disable $LIBRARY_LIST $PROGRAM_LIST doc
3282             enable avutil
3283         ;;
3284         --enable-random|--disable-random)
3285             action=${opt%%-random}
3286             do_random ${action#--} $COMPONENT_LIST
3287         ;;
3288         --enable-random=*|--disable-random=*)
3289             action=${opt%%-random=*}
3290             do_random ${action#--} $optval
3291         ;;
3292         --enable-*=*|--disable-*=*)
3293             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3294             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3295             eval list=\$$(toupper $thing)_LIST
3296             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3297             list=$(filter "$name" $list)
3298             [ "$list" = "" ] && warn "Option $opt did not match anything"
3299             $action $list
3300         ;;
3301         --enable-?*|--disable-?*)
3302             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3303             if is_in $option $COMPONENT_LIST; then
3304                 test $action = disable && action=unset
3305                 eval $action \$$(toupper ${option%s})_LIST
3306             elif is_in $option $CMDLINE_SELECT; then
3307                 $action $option
3308             else
3309                 die_unknown $opt
3310             fi
3311         ;;
3312         --list-*)
3313             NAME="${opt#--list-}"
3314             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3315             NAME=${NAME%s}
3316             eval show_list $NAME \$$(toupper $NAME)_LIST
3317         ;;
3318         --help|-h) show_help
3319         ;;
3320         --fatal-warnings) enable fatal_warnings
3321         ;;
3322         *)
3323             optname="${opt%%=*}"
3324             optname="${optname#--}"
3325             optname=$(echo "$optname" | sed 's/-/_/g')
3326             if is_in $optname $CMDLINE_SET; then
3327                 eval $optname='$optval'
3328             elif is_in $optname $CMDLINE_APPEND; then
3329                 append $optname "$optval"
3330             else
3331                 die_unknown $opt
3332             fi
3333         ;;
3334     esac
3335 done
3336
3337 for e in $env; do
3338     eval "export $e"
3339 done
3340
3341 disabled logging && logfile=/dev/null
3342
3343 # Disable all the library-specific components if the library itself
3344 # is disabled, see AVCODEC_LIST and following _LIST variables.
3345
3346 disable_components(){
3347     disabled ${1} && disable $(
3348         eval components="\$$(toupper ${1})_COMPONENTS"
3349         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3350     )
3351 }
3352
3353 map 'disable_components $v' $LIBRARY_LIST
3354
3355 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3356 set >> $logfile
3357
3358 test -n "$valgrind" && toolchain="valgrind-memcheck"
3359
3360 case "$toolchain" in
3361     *-asan)
3362         cc_default="${toolchain%-asan}"
3363         add_cflags  -fsanitize=address
3364         add_ldflags -fsanitize=address
3365     ;;
3366     *-tsan)
3367         cc_default="${toolchain%-tsan}"
3368         add_cflags  -fsanitize=thread -pie
3369         add_ldflags -fsanitize=thread -pie
3370         case "$toolchain" in
3371             gcc-tsan)
3372                 add_cflags  -fPIC
3373                 add_ldflags -fPIC
3374                 ;;
3375         esac
3376     ;;
3377     *-usan)
3378         cc_default="${toolchain%-usan}"
3379         add_cflags  -fsanitize=undefined
3380         add_ldflags -fsanitize=undefined
3381     ;;
3382     valgrind-*)
3383         target_exec_default="valgrind"
3384         case "$toolchain" in
3385             valgrind-massif)
3386                 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"
3387                 ;;
3388             valgrind-memcheck)
3389                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3390                 ;;
3391         esac
3392     ;;
3393     msvc)
3394         # Check whether the current MSVC version needs the C99 converter.
3395         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3396         # support enough of C99 to build ffmpeg. Default to the new
3397         # behaviour if the regexp was unable to match anything, since this
3398         # successfully parses the version number of existing supported
3399         # versions that require the converter (MSVC 2010 and 2012).
3400         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3401         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3402             cc_default="cl"
3403         else
3404             cc_default="c99wrap cl"
3405         fi
3406         ld_default="$source_path/compat/windows/mslink"
3407         nm_default="dumpbin -symbols"
3408         ar_default="lib"
3409         case "$arch" in
3410         arm*)
3411             as_default="armasm"
3412             ;;
3413         esac
3414         target_os_default="win32"
3415         # Use a relative path for TMPDIR. This makes sure all the
3416         # ffconf temp files are written with a relative path, avoiding
3417         # issues with msys/win32 path conversion for MSVC parameters
3418         # such as -Fo<file> or -out:<file>.
3419         TMPDIR=.
3420     ;;
3421     icl)
3422         cc_default="icl"
3423         ld_default="xilink"
3424         nm_default="dumpbin -symbols"
3425         ar_default="xilib"
3426         target_os_default="win32"
3427         TMPDIR=.
3428     ;;
3429     gcov)
3430         add_cflags  -fprofile-arcs -ftest-coverage
3431         add_ldflags -fprofile-arcs -ftest-coverage
3432     ;;
3433     hardened)
3434         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3435         add_cflags   -fno-strict-overflow -fstack-protector-all
3436         add_ldflags  -Wl,-z,relro -Wl,-z,now
3437     ;;
3438     ?*)
3439         die "Unknown toolchain $toolchain"
3440     ;;
3441 esac
3442
3443 test -n "$cross_prefix" && enable cross_compile
3444
3445 if enabled cross_compile; then
3446     test -n "$arch" && test -n "$target_os" ||
3447         die "Must specify target arch and OS when cross-compiling"
3448 fi
3449
3450 ar_default="${cross_prefix}${ar_default}"
3451 cc_default="${cross_prefix}${cc_default}"
3452 cxx_default="${cross_prefix}${cxx_default}"
3453 nm_default="${cross_prefix}${nm_default}"
3454 pkg_config_default="${cross_prefix}${pkg_config_default}"
3455 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3456     ranlib_default="${cross_prefix}${ranlib_default} -D"
3457 else
3458     ranlib_default="${cross_prefix}${ranlib_default}"
3459 fi
3460 strip_default="${cross_prefix}${strip_default}"
3461 windres_default="${cross_prefix}${windres_default}"
3462
3463 sysinclude_default="${sysroot}/usr/include"
3464
3465 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3466     target_exec target_os yasmexe
3467 enabled cross_compile || host_cc_default=$cc
3468 set_default host_cc
3469
3470 pkg_config_fail_message=""
3471 if ! $pkg_config --version >/dev/null 2>&1; then
3472     warn "$pkg_config not found, library detection may fail."
3473     pkg_config=false
3474 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3475     pkg_config_fail_message="
3476 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3477 fi
3478
3479 if test $doxygen != $doxygen_default && \
3480   ! $doxygen --version >/dev/null 2>&1; then
3481     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3482 fi
3483
3484 exesuf() {
3485     case $1 in
3486         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3487     esac
3488 }
3489
3490 EXESUF=$(exesuf $target_os)
3491 HOSTEXESUF=$(exesuf $host_os)
3492
3493 # set temporary file name
3494 : ${TMPDIR:=$TEMPDIR}
3495 : ${TMPDIR:=$TMP}
3496 : ${TMPDIR:=/tmp}
3497
3498 if [ -n "$tempprefix" ] ; then
3499     mktemp(){
3500         echo $tempprefix.${HOSTNAME}.${UID}
3501     }
3502 elif ! check_cmd mktemp -u XXXXXX; then
3503     # simple replacement for missing mktemp
3504     # NOT SAFE FOR GENERAL USE
3505     mktemp(){
3506         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3507     }
3508 fi
3509
3510 tmpfile(){
3511     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3512         (set -C; exec > $tmp) 2>/dev/null ||
3513         die "Unable to create temporary file in $TMPDIR."
3514     append TMPFILES $tmp
3515     eval $1=$tmp
3516 }
3517
3518 trap 'rm -f -- $TMPFILES' EXIT
3519
3520 tmpfile TMPASM .asm
3521 tmpfile TMPC   .c
3522 tmpfile TMPCPP .cpp
3523 tmpfile TMPE   $EXESUF
3524 tmpfile TMPH   .h
3525 tmpfile TMPM   .m
3526 tmpfile TMPO   .o
3527 tmpfile TMPS   .S
3528 tmpfile TMPSH  .sh
3529 tmpfile TMPV   .ver
3530
3531 unset -f mktemp
3532
3533 chmod +x $TMPE
3534
3535 # make sure we can execute files in $TMPDIR
3536 cat > $TMPSH 2>> $logfile <<EOF
3537 #! /bin/sh
3538 EOF
3539 chmod +x $TMPSH >> $logfile 2>&1
3540 if ! $TMPSH >> $logfile 2>&1; then
3541     cat <<EOF
3542 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3543 variable to another directory and make sure that it is not mounted noexec.
3544 EOF
3545     die "Sanity test failed."
3546 fi
3547
3548 armasm_flags(){
3549     for flag; do
3550         case $flag in
3551             # Filter out MSVC cl.exe options from cflags that shouldn't
3552             # be passed to gas-preprocessor
3553             -M[TD]*)                                            ;;
3554             *)                  echo $flag                      ;;
3555         esac
3556    done
3557 }
3558
3559 ccc_flags(){
3560     for flag; do
3561         case $flag in
3562             -std=c99)           echo -c99                       ;;
3563             -mcpu=*)            echo -arch ${flag#*=}           ;;
3564             -mieee)             echo -ieee                      ;;
3565             -O*|-fast)          echo $flag                      ;;
3566             -fno-math-errno)    echo -assume nomath_errno       ;;
3567             -g)                 echo -g3                        ;;
3568             -Wall)              echo -msg_enable level2         ;;
3569             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3570             -Wl,*)              echo $flag                      ;;
3571             -f*|-W*)                                            ;;
3572             *)                  echo $flag                      ;;
3573         esac
3574    done
3575 }
3576
3577 cparser_flags(){
3578     for flag; do
3579         case $flag in
3580             -Wno-switch)             echo -Wno-switch-enum ;;
3581             -Wno-format-zero-length) ;;
3582             -Wdisabled-optimization) ;;
3583             -Wno-pointer-sign)       echo -Wno-other ;;
3584             *)                       echo $flag ;;
3585         esac
3586     done
3587 }
3588
3589 msvc_common_flags(){
3590     for flag; do
3591         case $flag in
3592             # In addition to specifying certain flags under the compiler
3593             # specific filters, they must be specified here as well or else the
3594             # generic catch all at the bottom will print the original flag.
3595             -Wall)                ;;
3596             -std=c99)             ;;
3597             # Common flags
3598             -fomit-frame-pointer) ;;
3599             -g)                   echo -Z7 ;;
3600             -fno-math-errno)      ;;
3601             -fno-common)          ;;
3602             -fno-signed-zeros)    ;;
3603             -fPIC)                ;;
3604             -mthumb)              ;;
3605             -march=*)             ;;
3606             -lz)                  echo zlib.lib ;;
3607             -lavifil32)           echo vfw32.lib ;;
3608             -lavicap32)           echo vfw32.lib user32.lib ;;
3609             -lx264)               echo libx264.lib ;;
3610             -l*)                  echo ${flag#-l}.lib ;;
3611             -LARGEADDRESSAWARE)   echo $flag ;;
3612             -L*)                  echo -libpath:${flag#-L} ;;
3613             *)                    echo $flag ;;
3614         esac
3615     done
3616 }
3617
3618 msvc_flags(){
3619     msvc_common_flags "$@"
3620     for flag; do
3621         case $flag in
3622             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3623                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3624                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3625                                        -wd4307 \
3626                                        -wd4273 -wd4554 -wd4701 ;;
3627         esac
3628     done
3629 }
3630
3631 icl_flags(){
3632     msvc_common_flags "$@"
3633     for flag; do
3634         case $flag in
3635             # Despite what Intel's documentation says -Wall, which is supported
3636             # on Windows, does enable remarks so disable them here.
3637             -Wall)                echo $flag -Qdiag-disable:remark ;;
3638             -std=c99)             echo -Qstd=c99 ;;
3639             -flto)                echo -ipo ;;
3640         esac
3641     done
3642 }
3643
3644 icc_flags(){
3645     for flag; do
3646         case $flag in
3647             -flto)                echo -ipo ;;
3648             *)                    echo $flag ;;
3649         esac
3650     done
3651 }
3652
3653 pgi_flags(){
3654     for flag; do
3655         case $flag in
3656             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3657             -fomit-frame-pointer) echo -Mnoframe ;;
3658             -g)                   echo -gopt ;;
3659             *)                    echo $flag ;;
3660         esac
3661     done
3662 }
3663
3664 suncc_flags(){
3665     for flag; do
3666         case $flag in
3667             -march=*|-mcpu=*)
3668                 case "${flag#*=}" in
3669                     native)                   echo -xtarget=native       ;;
3670                     v9|niagara)               echo -xarch=sparc          ;;
3671                     ultrasparc)               echo -xarch=sparcvis       ;;
3672                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3673                     i586|pentium)             echo -xchip=pentium        ;;
3674                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3675                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3676                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3677                     pentium4*)          echo -xtarget=pentium4           ;;
3678                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3679                     *-sse3)             echo -xarch=sse3                 ;;
3680                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3681                     bonnell)                   echo -xarch=ssse3         ;;
3682                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3683                     westmere)                  echo -xtarget=westmere    ;;
3684                     silvermont)                echo -xarch=sse4_2        ;;
3685                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3686                     core-avx*|ivybridge|haswell|broadwell)
3687                                                echo -xarch=avx           ;;
3688                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3689                     btver1)                    echo -xarch=amdsse4a      ;;
3690                     btver2|bdver*)             echo -xarch=avx           ;;
3691                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3692                     k8|opteron|athlon64|athlon-fx)
3693                                                echo -xarch=sse2a         ;;
3694                     athlon*)                   echo -xarch=pentium_proa  ;;
3695                 esac
3696                 ;;
3697             -std=c99)             echo -xc99              ;;
3698             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3699             -fPIC)                echo -KPIC -xcode=pic32 ;;
3700             -W*,*)                echo $flag              ;;
3701             -f*-*|-W*|-mimpure-text)                      ;;
3702             -shared)              echo -G                 ;;
3703             *)                    echo $flag              ;;
3704         esac
3705     done
3706 }
3707
3708 tms470_flags(){
3709     for flag; do
3710         case $flag in
3711             -march=*|-mcpu=*)
3712                 case "${flag#*=}" in
3713                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3714                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3715                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3716                     armv6*|arm11*)          echo -mv=6   ;;
3717                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3718                                             echo -mv=5e  ;;
3719                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3720                 esac
3721                 ;;
3722             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3723             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3724             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3725             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3726             -msoft-float)   echo --float_support=vfplib       ;;
3727             -O[0-3]|-mf=*)  echo $flag                        ;;
3728             -g)             echo -g -mn                       ;;
3729             -pds=*)         echo $flag                        ;;
3730             -D*|-I*)        echo $flag                        ;;
3731             --gcc|--abi=*)  echo $flag                        ;;
3732             -me)            echo $flag                        ;;
3733         esac
3734     done
3735 }
3736
3737 probe_cc(){
3738     pfx=$1
3739     _cc=$2
3740     first=$3
3741
3742     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3743     unset _ld_o _ldflags _ld_lib _ld_path
3744     unset _depflags _DEPCMD _DEPFLAGS
3745     _flags_filter=echo
3746
3747     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3748         true # no-op to avoid reading stdin in following checks
3749     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3750         _type=llvm_gcc
3751         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3752         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3753         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3754         _cflags_speed='-O3'
3755         _cflags_size='-Os'
3756     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3757         _type=gcc
3758         gcc_version=$($_cc --version | head -n1)
3759         gcc_basever=$($_cc -dumpversion)
3760         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3761         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3762         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3763         case $gcc_basever in
3764             2) ;;
3765             2.*) ;;
3766             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3767         esac
3768         if [ "$first" = true ]; then
3769             case $gcc_basever in
3770                 4.2*)
3771                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3772             esac
3773         fi
3774         _cflags_speed='-O3'
3775         _cflags_size='-Os'
3776     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3777         _type=icc
3778         _ident=$($_cc --version | head -n1)
3779         _depflags='-MMD'
3780         _cflags_speed='-O3'
3781         _cflags_size='-Os'
3782         _cflags_noopt='-O1'
3783         _flags_filter=icc_flags
3784     elif $_cc -v 2>&1 | grep -q xlc; then
3785         _type=xlc
3786         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3787         _cflags_speed='-O5'
3788         _cflags_size='-O5 -qcompact'
3789     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3790         _type=ccc
3791         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3792         _DEPFLAGS='-M'
3793         _cflags_speed='-fast'
3794         _cflags_size='-O1'
3795         _flags_filter=ccc_flags
3796     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3797         test -d "$sysroot" || die "No valid sysroot specified."
3798         _type=armcc
3799         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3800         armcc_conf="$PWD/armcc.conf"
3801         $_cc --arm_linux_configure                 \
3802              --arm_linux_config_file="$armcc_conf" \
3803              --configure_sysroot="$sysroot"        \
3804              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3805              die "Error creating armcc configuration file."
3806         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3807         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3808         as_default="${cross_prefix}gcc"
3809         _depflags='-MMD'
3810         _cflags_speed='-O3'
3811         _cflags_size='-Os'
3812     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3813         _type=tms470
3814         _ident=$($_cc -version | head -n1 | tr -s ' ')
3815         _flags='--gcc --abi=eabi -me'
3816         _cc_e='-ppl -fe=$@'
3817         _cc_o='-fe=$@'
3818         _depflags='-ppa -ppd=$(@:.o=.d)'
3819         _cflags_speed='-O3 -mf=5'
3820         _cflags_size='-O3 -mf=2'
3821         _flags_filter=tms470_flags
3822     elif $_cc -v 2>&1 | grep -q clang; then
3823         _type=clang
3824         _ident=$($_cc --version 2>/dev/null | head -n1)
3825         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3826         _cflags_speed='-O3'
3827         _cflags_size='-Os'
3828     elif $_cc -V 2>&1 | grep -q Sun; then
3829         _type=suncc
3830         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3831         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3832         _DEPFLAGS='-xM1 -xc99'
3833         _ldflags='-std=c99'
3834         _cflags_speed='-O5'
3835         _cflags_size='-O5 -xspace'
3836         _flags_filter=suncc_flags
3837     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3838         _type=pathscale
3839         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3840         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3841         _cflags_speed='-O2'
3842         _cflags_size='-Os'
3843         _flags_filter='filter_out -Wdisabled-optimization'
3844     elif $_cc -v 2>&1 | grep -q Open64; then
3845         _type=open64
3846         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3847         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3848         _cflags_speed='-O2'
3849         _cflags_size='-Os'
3850         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3851     elif $_cc -V 2>&1 | grep -q Portland; then
3852         _type=pgi
3853         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3854         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3855         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3856         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3857         _cflags_noopt="-O"
3858         _flags_filter=pgi_flags
3859     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3860         _type=armasm
3861         _ident=$($_cc | head -n1)
3862         # 4509: "This form of conditional instruction is deprecated"
3863         _flags="-nologo -ignore 4509"
3864         _flags_filter=armasm_flags
3865     elif $_cc 2>&1 | grep -q Intel; then
3866         _type=icl
3867         _ident=$($_cc 2>&1 | head -n1)
3868         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3869         # Not only is O3 broken on 13.x+ but it is slower on all previous
3870         # versions (tested) as well.
3871         _cflags_speed="-O2"
3872         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3873         if $_cc 2>&1 | grep -q Linker; then
3874             _ld_o='-out:$@'
3875         else
3876             _ld_o='-Fe$@'
3877         fi
3878         _cc_o='-Fo$@'
3879         _cc_e='-P'
3880         _flags_filter=icl_flags
3881         _ld_lib='lib%.a'
3882         _ld_path='-libpath:'
3883         # -Qdiag-error to make icl error when seeing certain unknown arguments
3884         _flags='-nologo -Qdiag-error:4044,10157'
3885         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3886         # with MSVC which enables it by default.
3887         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3888         disable stripping
3889     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3890         _type=msvc
3891         _ident=$($_cc 2>&1 | head -n1)
3892         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3893         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3894         _cflags_speed="-O2"
3895         _cflags_size="-O1"
3896         if $_cc -nologo- 2>&1 | grep -q Linker; then
3897             _ld_o='-out:$@'
3898         else
3899             _ld_o='-Fe$@'
3900         fi
3901         _cc_o='-Fo$@'
3902         _cc_e='-P -Fi$@'
3903         _flags_filter=msvc_flags
3904         _ld_lib='lib%.a'
3905         _ld_path='-libpath:'
3906         _flags='-nologo'
3907         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3908         disable stripping
3909     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3910         _type=cparser
3911         _ident=$($_cc --version | head -n1)
3912         _depflags='-MMD'
3913         _cflags_speed='-O4'
3914         _cflags_size='-O2'
3915         _flags_filter=cparser_flags
3916     fi
3917
3918     eval ${pfx}_type=\$_type
3919     eval ${pfx}_ident=\$_ident
3920 }
3921
3922 set_ccvars(){
3923     eval ${1}_C=\${_cc_c-\${${1}_C}}
3924     eval ${1}_E=\${_cc_e-\${${1}_E}}
3925     eval ${1}_O=\${_cc_o-\${${1}_O}}
3926
3927     if [ -n "$_depflags" ]; then
3928         eval ${1}_DEPFLAGS=\$_depflags
3929     else
3930         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3931         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3932         eval DEP${1}FLAGS=\$_flags
3933     fi
3934 }
3935
3936 probe_cc cc "$cc" "true"
3937 cflags_filter=$_flags_filter
3938 cflags_speed=$_cflags_speed
3939 cflags_size=$_cflags_size
3940 cflags_noopt=$_cflags_noopt
3941 add_cflags $_flags $_cflags
3942 cc_ldflags=$_ldflags
3943 set_ccvars CC
3944
3945 probe_cc hostcc "$host_cc"
3946 host_cflags_filter=$_flags_filter
3947 add_host_cflags  $_flags $_cflags
3948 set_ccvars HOSTCC
3949
3950 test -n "$cc_type" && enable $cc_type ||
3951     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3952
3953 : ${as_default:=$cc}
3954 : ${objcc_default:=$cc}
3955 : ${dep_cc_default:=$cc}
3956 : ${ld_default:=$cc}
3957 : ${host_ld_default:=$host_cc}
3958 set_default ar as objcc dep_cc ld host_ld windres
3959
3960 probe_cc as "$as"
3961 asflags_filter=$_flags_filter
3962 add_asflags $_flags $_cflags
3963 set_ccvars AS
3964
3965 probe_cc objcc "$objcc"
3966 objcflags_filter=$_flags_filter
3967 add_objcflags $_flags $_cflags
3968 set_ccvars OBJC
3969
3970 probe_cc ld "$ld"
3971 ldflags_filter=$_flags_filter
3972 add_ldflags $_flags $_ldflags
3973 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3974 LD_O=${_ld_o-$LD_O}
3975 LD_LIB=${_ld_lib-$LD_LIB}
3976 LD_PATH=${_ld_path-$LD_PATH}
3977
3978 probe_cc hostld "$host_ld"
3979 host_ldflags_filter=$_flags_filter
3980 add_host_ldflags $_flags $_ldflags
3981 HOSTLD_O=${_ld_o-$HOSTLD_O}
3982
3983 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3984     probe_cc depcc "$dep_cc"
3985     CCDEP=${_DEPCMD:-$DEPCMD}
3986     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3987     DEPCCFLAGS=$_flags
3988 fi
3989
3990 if $ar 2>&1 | grep -q Microsoft; then
3991     arflags="-nologo"
3992     ar_o='-out:$@'
3993 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3994     arflags="rq"
3995     ar_o='$@'
3996 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3997     arflags='-Xany -r -c'
3998     ar_o='$@'
3999 elif $ar 2>&1 | grep -q "\[D\] "; then
4000     arflags="rcD"
4001     ar_o='$@'
4002 else
4003     arflags="rc"
4004     ar_o='$@'
4005 fi
4006
4007 add_cflags $extra_cflags
4008 add_cxxflags $extra_cxxflags
4009 add_objcflags $extra_objcflags
4010 add_asflags $extra_cflags
4011
4012 if test -n "$sysroot"; then
4013     case "$cc_type" in
4014         gcc|llvm_gcc|clang)
4015             add_cppflags --sysroot="$sysroot"
4016             add_ldflags --sysroot="$sysroot"
4017 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4018             add_cppflags -isysroot "$sysroot"
4019             add_ldflags -isysroot "$sysroot"
4020         ;;
4021         tms470)
4022             add_cppflags -I"$sysinclude"
4023             add_ldflags  --sysroot="$sysroot"
4024         ;;
4025     esac
4026 fi
4027
4028 if test "$cpu" = host; then
4029     enabled cross_compile &&
4030         die "--cpu=host makes no sense when cross-compiling."
4031
4032     case "$cc_type" in
4033         gcc|llvm_gcc)
4034             check_native(){
4035                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4036                 sed -n "/cc1.*$1=/{
4037                             s/.*$1=\\([^ ]*\\).*/\\1/
4038                             p
4039                             q
4040                         }" $TMPE
4041             }
4042             cpu=$(check_native -march || check_native -mcpu)
4043         ;;
4044         clang)
4045             check_native(){
4046                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4047                 sed -n "/cc1.*-target-cpu /{
4048                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4049                             p
4050                             q
4051                         }" $TMPE
4052             }
4053             cpu=$(check_native -march)
4054         ;;
4055     esac
4056
4057     test "${cpu:-host}" = host &&
4058         die "--cpu=host not supported with compiler $cc"
4059 fi
4060
4061 # Deal with common $arch aliases
4062 case "$arch" in
4063     aarch64|arm64)
4064         arch="aarch64"
4065     ;;
4066     arm*|iPad*|iPhone*)
4067         arch="arm"
4068     ;;
4069     mips*|IP*)
4070         case "$arch" in
4071         *el)
4072             add_cppflags -EL
4073             add_ldflags -EL
4074         ;;
4075         *eb)
4076             add_cppflags -EB
4077             add_ldflags -EB
4078         ;;
4079         esac
4080         arch="mips"
4081     ;;
4082     parisc*|hppa*)
4083         arch="parisc"
4084     ;;
4085     "Power Macintosh"|ppc*|powerpc*)
4086         arch="ppc"
4087     ;;
4088     s390|s390x)