avdevice/dshow_enummediatypes: check return of av_malloc
[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
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox 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-chromaprint     enable audio fingerprinting with chromaprint [no]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gnutls          enable gnutls, needed for https support
203                            if openssl is not used [no]
204   --disable-iconv          disable iconv [autodetect]
205   --enable-ladspa          enable LADSPA audio filtering [no]
206   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
207   --enable-libass          enable libass subtitles rendering,
208                            needed for subtitles and ass filter [no]
209   --enable-libbluray       enable BluRay reading using libbluray [no]
210   --enable-libbs2b         enable bs2b DSP library [no]
211   --enable-libcaca         enable textual display using libcaca [no]
212   --enable-libcelt         enable CELT decoding via libcelt [no]
213   --enable-libcdio         enable audio CD grabbing with libcdio [no]
214   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
215                            and libraw1394 [no]
216   --enable-libdcadec       enable DCA decoding via libdcadec [no]
217   --enable-libfaac         enable AAC encoding via libfaac [no]
218   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
219   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
220   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
221   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
222   --enable-libgme          enable Game Music Emu via libgme [no]
223   --enable-libgsm          enable GSM de/encoding via libgsm [no]
224   --enable-libiec61883     enable iec61883 via libiec61883 [no]
225   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
226   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
227   --enable-libmfx          enable HW acceleration through libmfx
228   --enable-libmodplug      enable ModPlug via libmodplug [no]
229   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
230   --enable-libnut          enable NUT (de)muxing via libnut,
231                            native (de)muxer exists [no]
232   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
233   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
234   --enable-libopencv       enable video filtering via libopencv [no]
235   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
236   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
237   --enable-libopus         enable Opus de/encoding via libopus [no]
238   --enable-libpulse        enable Pulseaudio input via libpulse [no]
239   --enable-librubberband   enable rubberband needed for rubberband filter [no]
240   --enable-libquvi         enable quvi input via libquvi [no]
241   --enable-librtmp         enable RTMP[E] support via librtmp [no]
242   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
243   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
244   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
245   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
246   --enable-libsoxr         enable Include libsoxr resampling [no]
247   --enable-libspeex        enable Speex de/encoding via libspeex [no]
248   --enable-libssh          enable SFTP protocol via libssh [no]
249   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
250   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
251   --enable-libtheora       enable Theora encoding via libtheora [no]
252   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
253   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
254   --enable-libv4l2         enable libv4l2/v4l-utils [no]
255   --enable-libvidstab      enable video stabilization using vid.stab [no]
256   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
259                            native implementation exists [no]
260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
262   --enable-libwebp         enable WebP encoding via libwebp [no]
263   --enable-libx264         enable H.264 encoding via x264 [no]
264   --enable-libx265         enable HEVC encoding via x265 [no]
265   --enable-libxavs         enable AVS encoding via xavs [no]
266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
270   --enable-libxvid         enable Xvid encoding via xvidcore,
271                            native MPEG-4/Xvid encoder exists [no]
272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
273   --enable-libzmq          enable message passing via libzmq [no]
274   --enable-libzvbi         enable teletext support via libzvbi [no]
275   --disable-lzma           disable lzma [autodetect]
276   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
277   --enable-mmal            enable decoding via MMAL [no]
278   --enable-nvenc           enable NVIDIA NVENC support [no]
279   --enable-openal          enable OpenAL 1.1 capture support [no]
280   --enable-opencl          enable OpenCL code
281   --enable-opengl          enable OpenGL rendering [no]
282   --enable-openssl         enable openssl, needed for https support
283                            if gnutls is not used [no]
284   --disable-sdl            disable sdl [autodetect]
285   --disable-securetransport disable Secure Transport, needed for TLS support
286                            on OSX if openssl and gnutls are not used [autodetect]
287   --enable-x11grab         enable X11 grabbing (legacy) [no]
288   --disable-xlib           disable xlib [autodetect]
289   --disable-zlib           disable zlib [autodetect]
290
291 Toolchain options:
292   --arch=ARCH              select architecture [$arch]
293   --cpu=CPU                select the minimum required CPU (affects
294                            instruction selection, may crash on older CPUs)
295   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
296   --progs-suffix=SUFFIX    program name suffix []
297   --enable-cross-compile   assume a cross-compiler is used
298   --sysroot=PATH           root of cross-build tree
299   --sysinclude=PATH        location of cross-build system headers
300   --target-os=OS           compiler targets OS [$target_os]
301   --target-exec=CMD        command to run executables on target
302   --target-path=DIR        path to view of build directory on target
303   --target-samples=DIR     path to samples directory on target
304   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
305   --toolchain=NAME         set tool defaults according to NAME
306   --nm=NM                  use nm tool NM [$nm_default]
307   --ar=AR                  use archive tool AR [$ar_default]
308   --as=AS                  use assembler AS [$as_default]
309   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
310   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
311   --cc=CC                  use C compiler CC [$cc_default]
312   --cxx=CXX                use C compiler CXX [$cxx_default]
313   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
314   --ld=LD                  use linker LD [$ld_default]
315   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
316   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
317   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
318   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
319   --host-cc=HOSTCC         use host C compiler HOSTCC
320   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
321   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
322   --host-ld=HOSTLD         use host linker HOSTLD
323   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
324   --host-libs=HLIBS        use libs HLIBS when linking for host
325   --host-os=OS             compiler host OS [$target_os]
326   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
327   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
328   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
329   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
330   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
331   --extra-libs=ELIBS       add ELIBS [$ELIBS]
332   --extra-version=STRING   version string suffix []
333   --optflags=OPTFLAGS      override optimization-related compiler flags
334   --build-suffix=SUFFIX    library name suffix []
335   --enable-pic             build position-independent code
336   --enable-thumb           compile for Thumb instruction set
337   --enable-lto             use link-time optimization
338   --env="ENV=override"     override the environment variables
339
340 Advanced options (experts only):
341   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
342   --custom-allocator=NAME  use a supported custom allocator
343   --disable-symver         disable symbol versioning
344   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
345   --disable-safe-bitstream-reader
346                            disable buffer boundary checking in bitreaders
347                            (faster, but may crash)
348   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
349   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
350
351 Optimization options (experts only):
352   --disable-asm            disable all assembly optimizations
353   --disable-altivec        disable AltiVec optimizations
354   --disable-vsx            disable VSX optimizations
355   --disable-power8         disable POWER8 optimizations
356   --disable-amd3dnow       disable 3DNow! optimizations
357   --disable-amd3dnowext    disable 3DNow! extended optimizations
358   --disable-mmx            disable MMX optimizations
359   --disable-mmxext         disable MMXEXT optimizations
360   --disable-sse            disable SSE optimizations
361   --disable-sse2           disable SSE2 optimizations
362   --disable-sse3           disable SSE3 optimizations
363   --disable-ssse3          disable SSSE3 optimizations
364   --disable-sse4           disable SSE4 optimizations
365   --disable-sse42          disable SSE4.2 optimizations
366   --disable-avx            disable AVX optimizations
367   --disable-xop            disable XOP optimizations
368   --disable-fma3           disable FMA3 optimizations
369   --disable-fma4           disable FMA4 optimizations
370   --disable-avx2           disable AVX2 optimizations
371   --disable-aesni          disable AESNI optimizations
372   --disable-armv5te        disable armv5te optimizations
373   --disable-armv6          disable armv6 optimizations
374   --disable-armv6t2        disable armv6t2 optimizations
375   --disable-vfp            disable VFP optimizations
376   --disable-neon           disable NEON optimizations
377   --disable-inline-asm     disable use of inline assembly
378   --disable-yasm           disable use of nasm/yasm assembly
379   --disable-mips32r5       disable MIPS32R5 optimizations
380   --disable-mips64r6       disable MIPS64R6 optimizations
381   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
382   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
383   --disable-msa            disable MSA optimizations
384   --disable-mipsfpu        disable floating point MIPS optimizations
385   --disable-mmi            disable Loongson SIMD optimizations
386   --disable-fast-unaligned consider unaligned accesses slow
387
388 Developer options (useful when working on FFmpeg itself):
389   --disable-debug          disable debugging symbols
390   --enable-debug=LEVEL     set the debug level [$debuglevel]
391   --disable-optimizations  disable compiler optimizations
392   --enable-extra-warnings  enable more compiler warnings
393   --disable-stripping      disable stripping of executables and shared libraries
394   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
395                            2 causes a slowdown at runtime.
396   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
397   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
398                            leaks and errors, using the specified valgrind binary.
399                            Cannot be combined with --target-exec
400   --enable-ftrapv          Trap arithmetic overflows
401   --samples=PATH           location of test samples for FATE, if not set use
402                            \$FATE_SAMPLES at make invocation time.
403   --enable-neon-clobber-test check NEON registers for clobbering (should be
404                            used only for debugging purposes)
405   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
406                            should be used only for debugging purposes)
407   --enable-random          randomly enable/disable components
408   --disable-random
409   --enable-random=LIST     randomly enable/disable specific components or
410   --disable-random=LIST    component groups. LIST is a comma-separated list
411                            of NAME[:PROB] entries where NAME is a component
412                            (group) and PROB the probability associated with
413                            NAME (default 0.5).
414   --random-seed=VALUE      seed value for --enable/disable-random
415   --disable-valgrind-backtrace do not print a backtrace under Valgrind
416                            (only applies to --disable-optimizations builds)
417
418 NOTE: Object files are built at the place where configure is launched.
419 EOF
420   exit 0
421 }
422
423 quotes='""'
424 if test -t 1 && which tput >/dev/null 2>&1; then
425     ncolors=$(tput colors)
426     if test -n "$ncolors" && test $ncolors -ge 8; then
427         bold_color=$(tput bold)
428         warn_color=$(tput setaf 3)
429         error_color=$(tput setaf 1)
430         reset_color=$(tput sgr0)
431     fi
432     # 72 used instead of 80 since that's the default of pr
433     ncols=$(tput cols)
434 fi
435 : ${ncols:=72}
436
437 log(){
438     echo "$@" >> $logfile
439 }
440
441 log_file(){
442     log BEGIN $1
443     pr -n -t $1 >> $logfile
444     log END $1
445 }
446
447 warn(){
448     log "WARNING: $*"
449     WARNINGS="${WARNINGS}WARNING: $*\n"
450 }
451
452 die(){
453     log "$@"
454     echo "$error_color$bold_color$@$reset_color"
455     cat <<EOF
456
457 If you think configure made a mistake, make sure you are using the latest
458 version from Git.  If the latest version fails, report the problem to the
459 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
460 EOF
461     if disabled logging; then
462         cat <<EOF
463 Rerun configure with logging enabled (do not use --disable-logging), and
464 include the log this produces with your report.
465 EOF
466     else
467         cat <<EOF
468 Include the log file "$logfile" produced by configure as this will help
469 solve the problem.
470 EOF
471     fi
472     exit 1
473 }
474
475 # Avoid locale weirdness, besides we really just want to translate ASCII.
476 toupper(){
477     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
478 }
479
480 tolower(){
481     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
482 }
483
484 c_escape(){
485     echo "$*" | sed 's/["\\]/\\\0/g'
486 }
487
488 sh_quote(){
489     v=$(echo "$1" | sed "s/'/'\\\\''/g")
490     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
491     echo "$v"
492 }
493
494 cleanws(){
495     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
496 }
497
498 filter(){
499     pat=$1
500     shift
501     for v; do
502         eval "case $v in $pat) echo $v ;; esac"
503     done
504 }
505
506 filter_out(){
507     pat=$1
508     shift
509     for v; do
510         eval "case $v in $pat) ;; *) echo $v ;; esac"
511     done
512 }
513
514 map(){
515     m=$1
516     shift
517     for v; do eval $m; done
518 }
519
520 add_suffix(){
521     suffix=$1
522     shift
523     for v; do echo ${v}${suffix}; done
524 }
525
526 set_all(){
527     value=$1
528     shift
529     for var in $*; do
530         eval $var=$value
531     done
532 }
533
534 set_weak(){
535     value=$1
536     shift
537     for var; do
538         eval : \${$var:=$value}
539     done
540 }
541
542 sanitize_var_name(){
543     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
544 }
545
546 set_safe(){
547     var=$1
548     shift
549     eval $(sanitize_var_name "$var")='$*'
550 }
551
552 get_safe(){
553     eval echo \$$(sanitize_var_name "$1")
554 }
555
556 pushvar(){
557     for pvar in $*; do
558         eval level=\${${pvar}_level:=0}
559         eval ${pvar}_${level}="\$$pvar"
560         eval ${pvar}_level=$(($level+1))
561     done
562 }
563
564 popvar(){
565     for pvar in $*; do
566         eval level=\${${pvar}_level:-0}
567         test $level = 0 && continue
568         eval level=$(($level-1))
569         eval $pvar="\${${pvar}_${level}}"
570         eval ${pvar}_level=$level
571         eval unset ${pvar}_${level}
572     done
573 }
574
575 enable(){
576     set_all yes $*
577 }
578
579 disable(){
580     set_all no $*
581 }
582
583 enable_weak(){
584     set_weak yes $*
585 }
586
587 disable_weak(){
588     set_weak no $*
589 }
590
591 enable_safe(){
592     for var; do
593         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
594     done
595 }
596
597 disable_safe(){
598     for var; do
599         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
600     done
601 }
602
603 do_enable_deep(){
604     for var; do
605         enabled $var && continue
606         eval sel="\$${var}_select"
607         eval sgs="\$${var}_suggest"
608         pushvar var sgs
609         enable_deep $sel
610         popvar sgs
611         enable_deep_weak $sgs
612         popvar var
613     done
614 }
615
616 enable_deep(){
617     do_enable_deep $*
618     enable $*
619 }
620
621 enable_deep_weak(){
622     for var; do
623         disabled $var && continue
624         pushvar var
625         do_enable_deep $var
626         popvar var
627         enable_weak $var
628     done
629 }
630
631 enabled(){
632     test "${1#!}" = "$1" && op='=' || op=!=
633     eval test "x\$${1#!}" $op "xyes"
634 }
635
636 disabled(){
637     test "${1#!}" = "$1" && op='=' || op=!=
638     eval test "x\$${1#!}" $op "xno"
639 }
640
641 enabled_all(){
642     for opt; do
643         enabled $opt || return 1
644     done
645 }
646
647 disabled_all(){
648     for opt; do
649         disabled $opt || return 1
650     done
651 }
652
653 enabled_any(){
654     for opt; do
655         enabled $opt && return 0
656     done
657 }
658
659 disabled_any(){
660     for opt; do
661         disabled $opt && return 0
662     done
663     return 1
664 }
665
666 set_default(){
667     for opt; do
668         eval : \${$opt:=\$${opt}_default}
669     done
670 }
671
672 is_in(){
673     value=$1
674     shift
675     for var in $*; do
676         [ $var = $value ] && return 0
677     done
678     return 1
679 }
680
681 do_check_deps(){
682     for cfg; do
683         cfg="${cfg#!}"
684         enabled ${cfg}_checking && die "Circular dependency for $cfg."
685         disabled ${cfg}_checking && continue
686         enable ${cfg}_checking
687         append allopts $cfg
688
689         eval dep_all="\$${cfg}_deps"
690         eval dep_any="\$${cfg}_deps_any"
691         eval dep_sel="\$${cfg}_select"
692         eval dep_sgs="\$${cfg}_suggest"
693         eval dep_ifa="\$${cfg}_if"
694         eval dep_ifn="\$${cfg}_if_any"
695
696         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
697         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
698         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
699
700         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
701         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
702         enabled_all  $dep_all || disable $cfg
703         enabled_any  $dep_any || disable $cfg
704         disabled_any $dep_sel && disable $cfg
705
706         if enabled $cfg; then
707             enable_deep $dep_sel
708             enable_deep_weak $dep_sgs
709         fi
710
711         disable ${cfg}_checking
712     done
713 }
714
715 check_deps(){
716     unset allopts
717
718     do_check_deps "$@"
719
720     for cfg in $allopts; do
721         enabled $cfg || continue
722         eval dep_extralibs="\$${cfg}_extralibs"
723         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
724     done
725 }
726
727 print_config(){
728     pfx=$1
729     files=$2
730     shift 2
731     map 'eval echo "$v \${$v:-no}"' "$@" |
732     awk "BEGIN { split(\"$files\", files) }
733         {
734             c = \"$pfx\" toupper(\$1);
735             v = \$2;
736             sub(/yes/, 1, v);
737             sub(/no/,  0, v);
738             for (f in files) {
739                 file = files[f];
740                 if (file ~ /\\.h\$/) {
741                     printf(\"#define %s %d\\n\", c, v) >>file;
742                 } else if (file ~ /\\.asm\$/) {
743                     printf(\"%%define %s %d\\n\", c, v) >>file;
744                 } else if (file ~ /\\.mak\$/) {
745                     n = -v ? \"\" : \"!\";
746                     printf(\"%s%s=yes\\n\", n, c) >>file;
747                 } else if (file ~ /\\.texi\$/) {
748                     pre = -v ? \"\" : \"@c \";
749                     yesno = \$2;
750                     c2 = tolower(c);
751                     gsub(/_/, \"-\", c2);
752                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
753                 }
754             }
755         }"
756 }
757
758 print_enabled(){
759     suf=$1
760     shift
761     for v; do
762         enabled $v && printf "%s\n" ${v%$suf};
763     done
764 }
765
766 append(){
767     var=$1
768     shift
769     eval "$var=\"\$$var $*\""
770 }
771
772 prepend(){
773     var=$1
774     shift
775     eval "$var=\"$* \$$var\""
776 }
777
778 unique(){
779     var=$1
780     uniq_list=""
781     for tok in $(eval echo \$$var); do
782         uniq_list="$(filter_out $tok $uniq_list) $tok"
783     done
784     eval "$var=\"${uniq_list}\""
785 }
786
787 add_cppflags(){
788     append CPPFLAGS "$@"
789 }
790
791 add_cflags(){
792     append CFLAGS $($cflags_filter "$@")
793 }
794
795 add_cxxflags(){
796     append CXXFLAGS $($cflags_filter "$@")
797 }
798
799 add_asflags(){
800     append ASFLAGS $($asflags_filter "$@")
801 }
802
803 add_ldflags(){
804     append LDFLAGS $($ldflags_filter "$@")
805 }
806
807 add_ldexeflags(){
808     append LDEXEFLAGS $($ldflags_filter "$@")
809 }
810
811 add_ldlibflags(){
812     append LDLIBFLAGS $($ldflags_filter "$@")
813 }
814
815 add_stripflags(){
816     append ASMSTRIPFLAGS "$@"
817 }
818
819 add_extralibs(){
820     prepend extralibs $($ldflags_filter "$@")
821 }
822
823 add_host_cppflags(){
824     append host_cppflags "$@"
825 }
826
827 add_host_cflags(){
828     append host_cflags $($host_cflags_filter "$@")
829 }
830
831 add_host_ldflags(){
832     append host_ldflags $($host_ldflags_filter "$@")
833 }
834
835 add_compat(){
836     append compat_objs $1
837     shift
838     map 'add_cppflags -D$v' "$@"
839 }
840
841 check_cmd(){
842     log "$@"
843     "$@" >> $logfile 2>&1
844 }
845
846 check_stat(){
847     log check_stat "$@"
848     stat "$1" >> $logfile 2>&1
849 }
850
851 cc_o(){
852     eval printf '%s\\n' $CC_O
853 }
854
855 cc_e(){
856     eval printf '%s\\n' $CC_E
857 }
858
859 check_cc(){
860     log check_cc "$@"
861     cat > $TMPC
862     log_file $TMPC
863     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
864 }
865
866 check_cxx(){
867     log check_cxx "$@"
868     cat > $TMPCPP
869     log_file $TMPCPP
870     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
871 }
872
873 check_oc(){
874     log check_oc "$@"
875     cat > $TMPM
876     log_file $TMPM
877     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
878 }
879
880 check_cpp(){
881     log check_cpp "$@"
882     cat > $TMPC
883     log_file $TMPC
884     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
885 }
886
887 as_o(){
888     eval printf '%s\\n' $AS_O
889 }
890
891 check_as(){
892     log check_as "$@"
893     cat > $TMPS
894     log_file $TMPS
895     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
896 }
897
898 check_inline_asm(){
899     log check_inline_asm "$@"
900     name="$1"
901     code="$2"
902     shift 2
903     disable $name
904     check_cc "$@" <<EOF && enable $name
905 void foo(void){ __asm__ volatile($code); }
906 EOF
907 }
908
909 check_insn(){
910     log check_insn "$@"
911     check_inline_asm ${1}_inline "\"$2\""
912     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
913 }
914
915 check_yasm(){
916     log check_yasm "$@"
917     echo "$1" > $TMPS
918     log_file $TMPS
919     shift 1
920     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
921 }
922
923 ld_o(){
924     eval printf '%s\\n' $LD_O
925 }
926
927 check_ld(){
928     log check_ld "$@"
929     type=$1
930     shift 1
931     flags=$(filter_out '-l*|*.so' $@)
932     libs=$(filter '-l*|*.so' $@)
933     check_$type $($cflags_filter $flags) || return
934     flags=$($ldflags_filter $flags)
935     libs=$($ldflags_filter $libs)
936     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
937 }
938
939 print_include(){
940     hdr=$1
941     test "${hdr%.h}" = "${hdr}" &&
942         echo "#include $hdr"    ||
943         echo "#include <$hdr>"
944 }
945
946 check_code(){
947     log check_code "$@"
948     check=$1
949     headers=$2
950     code=$3
951     shift 3
952     {
953         for hdr in $headers; do
954             print_include $hdr
955         done
956         echo "int main(void) { $code; return 0; }"
957     } | check_$check "$@"
958 }
959
960 check_cppflags(){
961     log check_cppflags "$@"
962     check_cc "$@" <<EOF && append CPPFLAGS "$@"
963 int x;
964 EOF
965 }
966
967 test_cflags(){
968     log test_cflags "$@"
969     set -- $($cflags_filter "$@")
970     check_cc "$@" <<EOF
971 int x;
972 EOF
973 }
974
975 check_cflags(){
976     log check_cflags "$@"
977     test_cflags "$@" && add_cflags "$@"
978 }
979
980 check_cxxflags(){
981     log check_cxxflags "$@"
982     set -- $($cflags_filter "$@")
983     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
984 int x;
985 EOF
986 }
987
988 test_ldflags(){
989     log test_ldflags "$@"
990     check_ld "cc" "$@" <<EOF
991 int main(void){ return 0; }
992 EOF
993 }
994
995 check_ldflags(){
996     log check_ldflags "$@"
997     test_ldflags "$@" && add_ldflags "$@"
998 }
999
1000 test_stripflags(){
1001     log test_stripflags "$@"
1002     # call check_cc to get a fresh TMPO
1003     check_cc <<EOF
1004 int main(void) { return 0; }
1005 EOF
1006     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1007 }
1008
1009 check_stripflags(){
1010     log check_stripflags "$@"
1011     test_stripflags "$@" && add_stripflags "$@"
1012 }
1013
1014 check_header(){
1015     log check_header "$@"
1016     header=$1
1017     shift
1018     disable_safe $header
1019     check_cpp "$@" <<EOF && enable_safe $header
1020 #include <$header>
1021 int x;
1022 EOF
1023 }
1024
1025 check_header_oc(){
1026     log check_header_oc "$@"
1027     rm -f -- "$TMPO"
1028     header=$1
1029     shift
1030     disable_safe $header
1031     {
1032        echo "#include <$header>"
1033        echo "int main(void) { return 0; }"
1034     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1035 }
1036
1037 check_func(){
1038     log check_func "$@"
1039     func=$1
1040     shift
1041     disable $func
1042     check_ld "cc" "$@" <<EOF && enable $func
1043 extern int $func();
1044 int main(void){ $func(); }
1045 EOF
1046 }
1047
1048 check_mathfunc(){
1049     log check_mathfunc "$@"
1050     func=$1
1051     narg=$2
1052     shift 2
1053     test $narg = 2 && args="f, g" || args="f"
1054     disable $func
1055     check_ld "cc" "$@" <<EOF && enable $func
1056 #include <math.h>
1057 float foo(float f, float g) { return $func($args); }
1058 int main(void){ return (int) foo; }
1059 EOF
1060 }
1061
1062 check_func_headers(){
1063     log check_func_headers "$@"
1064     headers=$1
1065     funcs=$2
1066     shift 2
1067     {
1068         for hdr in $headers; do
1069             print_include $hdr
1070         done
1071         for func in $funcs; do
1072             echo "long check_$func(void) { return (long) $func; }"
1073         done
1074         echo "int main(void) { return 0; }"
1075     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1076 }
1077
1078 check_class_headers_cpp(){
1079     log check_class_headers_cpp "$@"
1080     headers=$1
1081     classes=$2
1082     shift 2
1083     {
1084         for hdr in $headers; do
1085             echo "#include <$hdr>"
1086         done
1087         echo "int main(void) { "
1088         i=1
1089         for class in $classes; do
1090             echo "$class obj$i;"
1091             i=$(expr $i + 1)
1092         done
1093         echo "return 0; }"
1094     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1095 }
1096
1097 check_cpp_condition(){
1098     log check_cpp_condition "$@"
1099     header=$1
1100     condition=$2
1101     shift 2
1102     check_cpp "$@" <<EOF
1103 #include <$header>
1104 #if !($condition)
1105 #error "unsatisfied condition: $condition"
1106 #endif
1107 EOF
1108 }
1109
1110 check_lib(){
1111     log check_lib "$@"
1112     header="$1"
1113     func="$2"
1114     shift 2
1115     check_header $header && check_func $func "$@" && add_extralibs "$@"
1116 }
1117
1118 check_lib2(){
1119     log check_lib2 "$@"
1120     headers="$1"
1121     funcs="$2"
1122     shift 2
1123     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1124 }
1125
1126 check_lib_cpp(){
1127     log check_lib_cpp "$@"
1128     headers="$1"
1129     classes="$2"
1130     shift 2
1131     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1132 }
1133
1134 check_pkg_config(){
1135     log check_pkg_config "$@"
1136     pkgandversion="$1"
1137     pkg="${1%% *}"
1138     headers="$2"
1139     funcs="$3"
1140     shift 3
1141     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1142     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1143     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1144     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1145         set_safe "${pkg}_cflags" $pkg_cflags   &&
1146         set_safe "${pkg}_libs"   $pkg_libs
1147 }
1148
1149 check_exec(){
1150     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1151 }
1152
1153 check_exec_crash(){
1154     code=$(cat)
1155
1156     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1157     # are safe but may not be available everywhere.  Thus we use
1158     # raise(SIGTERM) instead.  The check is run in a subshell so we
1159     # can redirect the "Terminated" message from the shell.  SIGBUS
1160     # is not defined by standard C so it is used conditionally.
1161
1162     (check_exec "$@") >> $logfile 2>&1 <<EOF
1163 #include <signal.h>
1164 static void sighandler(int sig){
1165     raise(SIGTERM);
1166 }
1167 int foo(void){
1168     $code
1169 }
1170 int (*func_ptr)(void) = foo;
1171 int main(void){
1172     signal(SIGILL, sighandler);
1173     signal(SIGFPE, sighandler);
1174     signal(SIGSEGV, sighandler);
1175 #ifdef SIGBUS
1176     signal(SIGBUS, sighandler);
1177 #endif
1178     return func_ptr();
1179 }
1180 EOF
1181 }
1182
1183 check_type(){
1184     log check_type "$@"
1185     headers=$1
1186     type=$2
1187     shift 2
1188     disable_safe "$type"
1189     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1190 }
1191
1192 check_struct(){
1193     log check_struct "$@"
1194     headers=$1
1195     struct=$2
1196     member=$3
1197     shift 3
1198     disable_safe "${struct}_${member}"
1199     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1200         enable_safe "${struct}_${member}"
1201 }
1202
1203 check_builtin(){
1204     log check_builtin "$@"
1205     name=$1
1206     headers=$2
1207     builtin=$3
1208     shift 3
1209     disable "$name"
1210     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1211 }
1212
1213 check_compile_assert(){
1214     log check_compile_assert "$@"
1215     name=$1
1216     headers=$2
1217     condition=$3
1218     shift 3
1219     disable "$name"
1220     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1221 }
1222
1223 require(){
1224     name="$1"
1225     header="$2"
1226     func="$3"
1227     shift 3
1228     check_lib $header $func "$@" || die "ERROR: $name not found"
1229 }
1230
1231 require2(){
1232     name="$1"
1233     headers="$2"
1234     func="$3"
1235     shift 3
1236     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1237 }
1238
1239 require_cpp(){
1240     name="$1"
1241     headers="$2"
1242     classes="$3"
1243     shift 3
1244     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1245 }
1246
1247 use_pkg_config(){
1248     pkg="$1"
1249     check_pkg_config "$@" || return 1
1250     add_cflags    $(get_safe "${pkg}_cflags")
1251     add_extralibs $(get_safe "${pkg}_libs")
1252 }
1253
1254 require_pkg_config(){
1255     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1256 }
1257
1258 require_libfreetype(){
1259     log require_libfreetype "$@"
1260     pkg="freetype2"
1261     check_cmd $pkg_config --exists --print-errors $pkg \
1262       || die "ERROR: $pkg not found"
1263     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1264     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1265     {
1266         echo "#include <ft2build.h>"
1267         echo "#include FT_FREETYPE_H"
1268         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1269         echo "int main(void) { return 0; }"
1270     } | check_ld "cc" $pkg_cflags $pkg_libs \
1271       && set_safe "${pkg}_cflags" $pkg_cflags \
1272       && set_safe "${pkg}_libs"   $pkg_libs \
1273       || die "ERROR: $pkg not found"
1274     add_cflags    $(get_safe "${pkg}_cflags")
1275     add_extralibs $(get_safe "${pkg}_libs")
1276 }
1277
1278 hostcc_e(){
1279     eval printf '%s\\n' $HOSTCC_E
1280 }
1281
1282 hostcc_o(){
1283     eval printf '%s\\n' $HOSTCC_O
1284 }
1285
1286 check_host_cc(){
1287     log check_host_cc "$@"
1288     cat > $TMPC
1289     log_file $TMPC
1290     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1291 }
1292
1293 check_host_cpp(){
1294     log check_host_cpp "$@"
1295     cat > $TMPC
1296     log_file $TMPC
1297     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1298 }
1299
1300 check_host_cppflags(){
1301     log check_host_cppflags "$@"
1302     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1303 int x;
1304 EOF
1305 }
1306
1307 check_host_cflags(){
1308     log check_host_cflags "$@"
1309     set -- $($host_cflags_filter "$@")
1310     check_host_cc "$@" <<EOF && append host_cflags "$@"
1311 int x;
1312 EOF
1313 }
1314
1315 check_host_cpp_condition(){
1316     log check_host_cpp_condition "$@"
1317     header=$1
1318     condition=$2
1319     shift 2
1320     check_host_cpp "$@" <<EOF
1321 #include <$header>
1322 #if !($condition)
1323 #error "unsatisfied condition: $condition"
1324 #endif
1325 EOF
1326 }
1327
1328 cp_if_changed(){
1329     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1330     mkdir -p "$(dirname $2)"
1331     $cp_f "$1" "$2"
1332 }
1333
1334 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1335 # system-dependent things.
1336
1337 AVCODEC_COMPONENTS="
1338     bsfs
1339     decoders
1340     encoders
1341     hwaccels
1342     parsers
1343 "
1344
1345 AVDEVICE_COMPONENTS="
1346     indevs
1347     outdevs
1348 "
1349 AVFILTER_COMPONENTS="
1350     filters
1351 "
1352 AVFORMAT_COMPONENTS="
1353     demuxers
1354     muxers
1355     protocols
1356 "
1357
1358 AVRESAMPLE_COMPONENTS=""
1359 AVUTIL_COMPONENTS=""
1360
1361 COMPONENT_LIST="
1362     $AVCODEC_COMPONENTS
1363     $AVDEVICE_COMPONENTS
1364     $AVFILTER_COMPONENTS
1365     $AVFORMAT_COMPONENTS
1366     $AVRESAMPLE_COMPONENTS
1367     $AVUTIL_COMPONENTS
1368 "
1369
1370 EXAMPLE_LIST="
1371     avio_reading_example
1372     avio_dir_cmd_example
1373     decoding_encoding_example
1374     demuxing_decoding_example
1375     extract_mvs_example
1376     filter_audio_example
1377     filtering_audio_example
1378     filtering_video_example
1379     metadata_example
1380     muxing_example
1381     qsvdec_example
1382     remuxing_example
1383     resampling_audio_example
1384     scaling_video_example
1385     transcode_aac_example
1386     transcoding_example
1387 "
1388
1389 EXTERNAL_LIBRARY_LIST="
1390     avisynth
1391     bzlib
1392     chromaprint
1393     crystalhd
1394     decklink
1395     frei0r
1396     gnutls
1397     iconv
1398     ladspa
1399     libaacplus
1400     libass
1401     libbluray
1402     libbs2b
1403     libcaca
1404     libcdio
1405     libcelt
1406     libdc1394
1407     libdcadec
1408     libfaac
1409     libfdk_aac
1410     libflite
1411     libfontconfig
1412     libfreetype
1413     libfribidi
1414     libgme
1415     libgsm
1416     libiec61883
1417     libilbc
1418     libkvazaar
1419     libmfx
1420     libmodplug
1421     libmp3lame
1422     libnut
1423     libopencore_amrnb
1424     libopencore_amrwb
1425     libopencv
1426     libopenh264
1427     libopenjpeg
1428     libopus
1429     libpulse
1430     libquvi
1431     librtmp
1432     librubberband
1433     libschroedinger
1434     libshine
1435     libsmbclient
1436     libsnappy
1437     libsoxr
1438     libspeex
1439     libssh
1440     libstagefright_h264
1441     libtesseract
1442     libtheora
1443     libtwolame
1444     libutvideo
1445     libv4l2
1446     libvidstab
1447     libvo_aacenc
1448     libvo_amrwbenc
1449     libvorbis
1450     libvpx
1451     libwavpack
1452     libwebp
1453     libx264
1454     libx265
1455     libxavs
1456     libxcb
1457     libxcb_shm
1458     libxcb_shape
1459     libxcb_xfixes
1460     libxvid
1461     libzimg
1462     libzmq
1463     libzvbi
1464     lzma
1465     mmal
1466     nvenc
1467     openal
1468     opencl
1469     opengl
1470     openssl
1471     sdl
1472     securetransport
1473     x11grab
1474     xlib
1475     zlib
1476 "
1477
1478 DOCUMENT_LIST="
1479     doc
1480     htmlpages
1481     manpages
1482     podpages
1483     txtpages
1484 "
1485
1486 FEATURE_LIST="
1487     ftrapv
1488     gray
1489     hardcoded_tables
1490     runtime_cpudetect
1491     safe_bitstream_reader
1492     shared
1493     small
1494     static
1495     swscale_alpha
1496 "
1497
1498 HWACCEL_LIST="
1499     d3d11va
1500     dxva2
1501     vaapi
1502     vda
1503     vdpau
1504     videotoolbox
1505     xvmc
1506 "
1507
1508 LIBRARY_LIST="
1509     avcodec
1510     avdevice
1511     avfilter
1512     avformat
1513     avresample
1514     avutil
1515     postproc
1516     swresample
1517     swscale
1518 "
1519
1520 LICENSE_LIST="
1521     gpl
1522     nonfree
1523     version3
1524 "
1525
1526 PROGRAM_LIST="
1527     ffplay
1528     ffprobe
1529     ffserver
1530     ffmpeg
1531 "
1532
1533 SUBSYSTEM_LIST="
1534     dct
1535     dwt
1536     error_resilience
1537     faan
1538     fast_unaligned
1539     fft
1540     lsp
1541     lzo
1542     mdct
1543     pixelutils
1544     network
1545     rdft
1546 "
1547
1548 CONFIG_LIST="
1549     $COMPONENT_LIST
1550     $DOCUMENT_LIST
1551     $EXAMPLE_LIST
1552     $EXTERNAL_LIBRARY_LIST
1553     $FEATURE_LIST
1554     $HWACCEL_LIST
1555     $LICENSE_LIST
1556     $LIBRARY_LIST
1557     $PROGRAM_LIST
1558     $SUBSYSTEM_LIST
1559     fontconfig
1560     incompatible_libav_abi
1561     memalign_hack
1562     memory_poisoning
1563     neon_clobber_test
1564     pic
1565     pod2man
1566     raise_major
1567     thumb
1568     valgrind_backtrace
1569     xmm_clobber_test
1570 "
1571
1572 THREADS_LIST="
1573     pthreads
1574     os2threads
1575     w32threads
1576 "
1577
1578 ATOMICS_LIST="
1579     atomics_gcc
1580     atomics_suncc
1581     atomics_win32
1582 "
1583
1584 ARCH_LIST="
1585     aarch64
1586     alpha
1587     arm
1588     avr32
1589     avr32_ap
1590     avr32_uc
1591     bfin
1592     ia64
1593     m68k
1594     mips
1595     mips64
1596     parisc
1597     ppc
1598     ppc64
1599     s390
1600     sh4
1601     sparc
1602     sparc64
1603     tilegx
1604     tilepro
1605     tomi
1606     x86
1607     x86_32
1608     x86_64
1609 "
1610
1611 ARCH_EXT_LIST_ARM="
1612     armv5te
1613     armv6
1614     armv6t2
1615     armv8
1616     neon
1617     vfp
1618     vfpv3
1619     setend
1620 "
1621
1622 ARCH_EXT_LIST_MIPS="
1623     mipsfpu
1624     mips32r2
1625     mips32r5
1626     mips64r6
1627     mipsdspr1
1628     mipsdspr2
1629     msa
1630 "
1631
1632 ARCH_EXT_LIST_LOONGSON="
1633     loongson2
1634     loongson3
1635     mmi
1636 "
1637
1638 ARCH_EXT_LIST_X86_SIMD="
1639     aesni
1640     amd3dnow
1641     amd3dnowext
1642     avx
1643     avx2
1644     fma3
1645     fma4
1646     mmx
1647     mmxext
1648     sse
1649     sse2
1650     sse3
1651     sse4
1652     sse42
1653     ssse3
1654     xop
1655 "
1656
1657 ARCH_EXT_LIST_PPC="
1658     altivec
1659     dcbzl
1660     ldbrx
1661     power8
1662     ppc4xx
1663     vsx
1664 "
1665
1666 ARCH_EXT_LIST_X86="
1667     $ARCH_EXT_LIST_X86_SIMD
1668     cpunop
1669     i686
1670 "
1671
1672 ARCH_EXT_LIST="
1673     $ARCH_EXT_LIST_ARM
1674     $ARCH_EXT_LIST_PPC
1675     $ARCH_EXT_LIST_X86
1676     $ARCH_EXT_LIST_MIPS
1677     $ARCH_EXT_LIST_LOONGSON
1678 "
1679
1680 ARCH_FEATURES="
1681     aligned_stack
1682     fast_64bit
1683     fast_clz
1684     fast_cmov
1685     local_aligned_8
1686     local_aligned_16
1687     local_aligned_32
1688     simd_align_16
1689 "
1690
1691 BUILTIN_LIST="
1692     atomic_cas_ptr
1693     atomic_compare_exchange
1694     machine_rw_barrier
1695     MemoryBarrier
1696     mm_empty
1697     rdtsc
1698     sarestart
1699     sync_val_compare_and_swap
1700 "
1701 HAVE_LIST_CMDLINE="
1702     inline_asm
1703     symver
1704     yasm
1705 "
1706
1707 HAVE_LIST_PUB="
1708     bigendian
1709     fast_unaligned
1710     incompatible_libav_abi
1711 "
1712
1713 HEADERS_LIST="
1714     alsa_asoundlib_h
1715     altivec_h
1716     arpa_inet_h
1717     asm_types_h
1718     cdio_paranoia_h
1719     cdio_paranoia_paranoia_h
1720     dev_bktr_ioctl_bt848_h
1721     dev_bktr_ioctl_meteor_h
1722     dev_ic_bt8xx_h
1723     dev_video_bktr_ioctl_bt848_h
1724     dev_video_meteor_ioctl_meteor_h
1725     direct_h
1726     dirent_h
1727     dlfcn_h
1728     d3d11_h
1729     dxva_h
1730     ES2_gl_h
1731     gsm_h
1732     io_h
1733     mach_mach_time_h
1734     machine_ioctl_bt848_h
1735     machine_ioctl_meteor_h
1736     malloc_h
1737     openjpeg_1_5_openjpeg_h
1738     OpenGL_gl3_h
1739     poll_h
1740     sndio_h
1741     soundcard_h
1742     sys_mman_h
1743     sys_param_h
1744     sys_resource_h
1745     sys_select_h
1746     sys_soundcard_h
1747     sys_time_h
1748     sys_un_h
1749     sys_videoio_h
1750     termios_h
1751     udplite_h
1752     unistd_h
1753     valgrind_valgrind_h
1754     windows_h
1755     winsock2_h
1756 "
1757
1758 INTRINSICS_LIST="
1759     intrinsics_neon
1760 "
1761
1762 MATH_FUNCS="
1763     atanf
1764     atan2f
1765     cbrt
1766     cbrtf
1767     copysign
1768     cosf
1769     erf
1770     exp2
1771     exp2f
1772     expf
1773     isinf
1774     isnan
1775     ldexpf
1776     llrint
1777     llrintf
1778     log2
1779     log2f
1780     log10f
1781     lrint
1782     lrintf
1783     powf
1784     rint
1785     round
1786     roundf
1787     sinf
1788     trunc
1789     truncf
1790 "
1791
1792 SYSTEM_FUNCS="
1793     access
1794     aligned_malloc
1795     clock_gettime
1796     closesocket
1797     CommandLineToArgvW
1798     CoTaskMemFree
1799     CryptGenRandom
1800     dlopen
1801     fcntl
1802     flt_lim
1803     fork
1804     getaddrinfo
1805     gethrtime
1806     getopt
1807     GetProcessAffinityMask
1808     GetProcessMemoryInfo
1809     GetProcessTimes
1810     getrusage
1811     GetSystemTimeAsFileTime
1812     gettimeofday
1813     glob
1814     glXGetProcAddress
1815     gmtime_r
1816     inet_aton
1817     isatty
1818     jack_port_get_latency_range
1819     kbhit
1820     localtime_r
1821     lstat
1822     lzo1x_999_compress
1823     mach_absolute_time
1824     MapViewOfFile
1825     memalign
1826     mkstemp
1827     mmap
1828     mprotect
1829     nanosleep
1830     PeekNamedPipe
1831     posix_memalign
1832     pthread_cancel
1833     sched_getaffinity
1834     SetConsoleTextAttribute
1835     SetConsoleCtrlHandler
1836     setmode
1837     setrlimit
1838     Sleep
1839     strerror_r
1840     sysconf
1841     sysctl
1842     usleep
1843     UTGetOSTypeFromString
1844     VirtualAlloc
1845     wglGetProcAddress
1846 "
1847
1848 TOOLCHAIN_FEATURES="
1849     as_dn_directive
1850     as_func
1851     as_object_arch
1852     asm_mod_q
1853     attribute_may_alias
1854     attribute_packed
1855     ebp_available
1856     ebx_available
1857     gnu_as
1858     gnu_windres
1859     ibm_asm
1860     inline_asm_labels
1861     inline_asm_nonlocal_labels
1862     inline_asm_direct_symbol_refs
1863     pragma_deprecated
1864     rsync_contimeout
1865     symver_asm_label
1866     symver_gnu_asm
1867     vfp_args
1868     xform_asm
1869     xmm_clobbers
1870 "
1871
1872 TYPES_LIST="
1873     CONDITION_VARIABLE_Ptr
1874     socklen_t
1875     struct_addrinfo
1876     struct_dcadec_exss_info_matrix_encoding
1877     struct_group_source_req
1878     struct_ip_mreq_source
1879     struct_ipv6_mreq
1880     struct_pollfd
1881     struct_rusage_ru_maxrss
1882     struct_sctp_event_subscribe
1883     struct_sockaddr_in6
1884     struct_sockaddr_sa_len
1885     struct_sockaddr_storage
1886     struct_stat_st_mtim_tv_nsec
1887     struct_v4l2_frmivalenum_discrete
1888 "
1889
1890 HAVE_LIST="
1891     $ARCH_EXT_LIST
1892     $(add_suffix _external $ARCH_EXT_LIST)
1893     $(add_suffix _inline   $ARCH_EXT_LIST)
1894     $ARCH_FEATURES
1895     $ATOMICS_LIST
1896     $BUILTIN_LIST
1897     $HAVE_LIST_CMDLINE
1898     $HAVE_LIST_PUB
1899     $HEADERS_LIST
1900     $INTRINSICS_LIST
1901     $MATH_FUNCS
1902     $SYSTEM_FUNCS
1903     $THREADS_LIST
1904     $TOOLCHAIN_FEATURES
1905     $TYPES_LIST
1906     atomics_native
1907     dos_paths
1908     dxva2api_cobj
1909     dxva2_lib
1910     winrt
1911     libc_msvcrt
1912     libdc1394_1
1913     libdc1394_2
1914     makeinfo
1915     makeinfo_html
1916     perl
1917     pod2man
1918     sdl
1919     section_data_rel_ro
1920     texi2html
1921     threads
1922     vaapi_x11
1923     vdpau_x11
1924     xlib
1925 "
1926
1927 # options emitted with CONFIG_ prefix but not available on the command line
1928 CONFIG_EXTRA="
1929     aandcttables
1930     ac3dsp
1931     audio_frame_queue
1932     audiodsp
1933     blockdsp
1934     bswapdsp
1935     cabac
1936     dvprofile
1937     exif
1938     faandct
1939     faanidct
1940     fdctdsp
1941     flacdsp
1942     fmtconvert
1943     frame_thread_encoder
1944     g722dsp
1945     gcrypt
1946     gmp
1947     golomb
1948     gplv3
1949     h263dsp
1950     h264chroma
1951     h264dsp
1952     h264pred
1953     h264qpel
1954     hpeldsp
1955     huffman
1956     huffyuvdsp
1957     huffyuvencdsp
1958     idctdsp
1959     iirfilter
1960     imdct15
1961     intrax8
1962     ividsp
1963     jpegtables
1964     libx262
1965     lgplv3
1966     llauddsp
1967     llviddsp
1968     lpc
1969     lzf
1970     me_cmp
1971     mpeg_er
1972     mpegaudio
1973     mpegaudiodsp
1974     mpegvideo
1975     mpegvideoenc
1976     mss34dsp
1977     pixblockdsp
1978     qpeldsp
1979     qsv
1980     qsvdec
1981     qsvenc
1982     rangecoder
1983     riffdec
1984     riffenc
1985     rtpdec
1986     rtpenc_chain
1987     rv34dsp
1988     sinewin
1989     snappy
1990     startcode
1991     texturedsp
1992     texturedspenc
1993     tpeldsp
1994     videodsp
1995     vp3dsp
1996     vp56dsp
1997     vp8dsp
1998     wma_freqs
1999     wmv2dsp
2000 "
2001
2002 CMDLINE_SELECT="
2003     $ARCH_EXT_LIST
2004     $CONFIG_LIST
2005     $HAVE_LIST_CMDLINE
2006     $THREADS_LIST
2007     asm
2008     cross_compile
2009     debug
2010     extra_warnings
2011     logging
2012     lto
2013     optimizations
2014     rpath
2015     stripping
2016 "
2017
2018 PATHS_LIST="
2019     bindir
2020     datadir
2021     docdir
2022     incdir
2023     libdir
2024     mandir
2025     pkgconfigdir
2026     prefix
2027     shlibdir
2028 "
2029
2030 CMDLINE_SET="
2031     $PATHS_LIST
2032     ar
2033     arch
2034     as
2035     assert_level
2036     build_suffix
2037     cc
2038     cpu
2039     cross_prefix
2040     custom_allocator
2041     cxx
2042     dep_cc
2043     doxygen
2044     env
2045     extra_version
2046     gas
2047     host_cc
2048     host_cflags
2049     host_ld
2050     host_ldflags
2051     host_libs
2052     host_os
2053     install
2054     ld
2055     logfile
2056     malloc_prefix
2057     nm
2058     optflags
2059     pkg_config
2060     pkg_config_flags
2061     progs_suffix
2062     random_seed
2063     ranlib
2064     samples
2065     strip
2066     sws_max_filter_size
2067     sysinclude
2068     sysroot
2069     target_exec
2070     target_os
2071     target_path
2072     target_samples
2073     tempprefix
2074     toolchain
2075     valgrind
2076     yasmexe
2077 "
2078
2079 CMDLINE_APPEND="
2080     extra_cflags
2081     extra_cxxflags
2082     host_cppflags
2083 "
2084
2085 # code dependency declarations
2086
2087 # architecture extensions
2088
2089 armv5te_deps="arm"
2090 armv6_deps="arm"
2091 armv6t2_deps="arm"
2092 armv8_deps="aarch64"
2093 neon_deps_any="aarch64 arm"
2094 intrinsics_neon_deps="neon"
2095 vfp_deps_any="aarch64 arm"
2096 vfpv3_deps="vfp"
2097 setend_deps="arm"
2098
2099 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2100
2101 mipsfpu_deps="mips"
2102 mipsdspr1_deps="mips"
2103 mipsdspr2_deps="mips"
2104 mips32r2_deps="mips"
2105 mips32r5_deps="mips"
2106 mips64r6_deps="mips"
2107 msa_deps="mips"
2108 mmi_deps="mips"
2109
2110 altivec_deps="ppc"
2111 dcbzl_deps="ppc"
2112 ldbrx_deps="ppc"
2113 ppc4xx_deps="ppc"
2114 vsx_deps="altivec"
2115 power8_deps="vsx"
2116
2117 cpunop_deps="i686"
2118 x86_64_select="i686"
2119 x86_64_suggest="fast_cmov"
2120
2121 amd3dnow_deps="mmx"
2122 amd3dnowext_deps="amd3dnow"
2123 i686_deps="x86"
2124 mmx_deps="x86"
2125 mmxext_deps="mmx"
2126 sse_deps="mmxext"
2127 sse2_deps="sse"
2128 sse3_deps="sse2"
2129 ssse3_deps="sse3"
2130 sse4_deps="ssse3"
2131 sse42_deps="sse4"
2132 aesni_deps="sse42"
2133 avx_deps="sse42"
2134 xop_deps="avx"
2135 fma3_deps="avx"
2136 fma4_deps="avx"
2137 avx2_deps="avx"
2138
2139 mmx_external_deps="yasm"
2140 mmx_inline_deps="inline_asm"
2141 mmx_suggest="mmx_external mmx_inline"
2142
2143 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2144     eval dep=\$${ext}_deps
2145     eval ${ext}_external_deps='"${dep}_external"'
2146     eval ${ext}_inline_deps='"${dep}_inline"'
2147     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2148 done
2149
2150 aligned_stack_if_any="aarch64 ppc x86"
2151 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2152 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2153 fast_unaligned_if_any="aarch64 ppc x86"
2154 simd_align_16_if_any="altivec neon sse"
2155
2156 # system capabilities
2157 symver_if_any="symver_asm_label symver_gnu_asm"
2158 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2159
2160 # threading support
2161 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2162 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2163 atomics_win32_if="MemoryBarrier"
2164 atomics_native_if_any="$ATOMICS_LIST"
2165 w32threads_deps="atomics_native"
2166 threads_if_any="$THREADS_LIST"
2167
2168 # subsystems
2169 dct_select="rdft"
2170 error_resilience_select="me_cmp"
2171 faandct_deps="faan fdctdsp"
2172 faanidct_deps="faan idctdsp"
2173 frame_thread_encoder_deps="encoders threads"
2174 intrax8_select="error_resilience"
2175 mdct_select="fft"
2176 rdft_select="fft"
2177 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2178 mpeg_er_select="error_resilience"
2179 mpegaudio_select="mpegaudiodsp"
2180 mpegaudiodsp_select="dct"
2181 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2182 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2183 qsvdec_select="qsv"
2184 qsvenc_select="qsv"
2185
2186 # decoders / encoders
2187 aac_decoder_select="imdct15 mdct sinewin"
2188 aac_fixed_decoder_select="mdct sinewin"
2189 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2190 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2191 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2192 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2193 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2194 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2195 adpcm_g722_decoder_select="g722dsp"
2196 adpcm_g722_encoder_select="g722dsp"
2197 aic_decoder_select="golomb idctdsp"
2198 alac_encoder_select="lpc"
2199 als_decoder_select="bswapdsp"
2200 amrnb_decoder_select="lsp"
2201 amrwb_decoder_select="lsp"
2202 amv_decoder_select="sp5x_decoder exif"
2203 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2204 ape_decoder_select="bswapdsp llauddsp"
2205 apng_decoder_select="zlib"
2206 apng_encoder_select="huffyuvencdsp zlib"
2207 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2208 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2209 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2210 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2211 atrac1_decoder_select="mdct sinewin"
2212 atrac3_decoder_select="mdct"
2213 atrac3p_decoder_select="mdct sinewin"
2214 avrn_decoder_select="exif jpegtables"
2215 bink_decoder_select="blockdsp hpeldsp"
2216 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2217 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2218 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2219 cllc_decoder_select="bswapdsp"
2220 comfortnoise_encoder_select="lpc"
2221 cook_decoder_select="audiodsp mdct sinewin"
2222 cscd_decoder_select="lzo"
2223 cscd_decoder_suggest="zlib"
2224 dca_decoder_select="fmtconvert mdct"
2225 dds_decoder_select="texturedsp"
2226 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2227 dnxhd_decoder_select="blockdsp idctdsp"
2228 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2229 dvvideo_decoder_select="dvprofile idctdsp"
2230 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2231 dxa_decoder_select="zlib"
2232 dxv_decoder_select="lzf texturedsp"
2233 eac3_decoder_select="ac3_decoder"
2234 eac3_encoder_select="ac3_encoder"
2235 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2236 eatgq_decoder_select="aandcttables"
2237 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2238 exr_decoder_select="zlib"
2239 ffv1_decoder_select="golomb rangecoder"
2240 ffv1_encoder_select="rangecoder"
2241 ffvhuff_decoder_select="huffyuv_decoder"
2242 ffvhuff_encoder_select="huffyuv_encoder"
2243 fic_decoder_select="golomb"
2244 flac_decoder_select="flacdsp golomb"
2245 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2246 flashsv_decoder_select="zlib"
2247 flashsv_encoder_select="zlib"
2248 flashsv2_encoder_select="zlib"
2249 flashsv2_decoder_select="zlib"
2250 flv_decoder_select="h263_decoder"
2251 flv_encoder_select="h263_encoder"
2252 fourxm_decoder_select="blockdsp bswapdsp"
2253 fraps_decoder_select="bswapdsp huffman"
2254 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2255 g729_decoder_select="audiodsp"
2256 h261_decoder_select="mpegvideo"
2257 h261_encoder_select="aandcttables mpegvideoenc"
2258 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2259 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2260 h263i_decoder_select="h263_decoder"
2261 h263p_decoder_select="h263_decoder"
2262 h263p_encoder_select="h263_encoder"
2263 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2264 h264_decoder_suggest="error_resilience"
2265 h264_qsv_decoder_deps="libmfx"
2266 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2267 h264_qsv_encoder_deps="libmfx"
2268 h264_qsv_encoder_select="qsvenc"
2269 hap_decoder_select="snappy texturedsp"
2270 hap_encoder_deps="libsnappy"
2271 hap_encoder_select="texturedspenc"
2272 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2273 hevc_qsv_encoder_deps="libmfx"
2274 hevc_qsv_decoder_deps="libmfx"
2275 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2276 hevc_qsv_encoder_select="qsvenc"
2277 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2278 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2279 iac_decoder_select="imc_decoder"
2280 imc_decoder_select="bswapdsp fft mdct sinewin"
2281 indeo3_decoder_select="hpeldsp"
2282 indeo4_decoder_select="ividsp"
2283 indeo5_decoder_select="ividsp"
2284 interplay_video_decoder_select="hpeldsp"
2285 jpegls_decoder_select="golomb mjpeg_decoder"
2286 jpegls_encoder_select="golomb"
2287 jv_decoder_select="blockdsp"
2288 lagarith_decoder_select="huffyuvdsp"
2289 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2290 loco_decoder_select="golomb"
2291 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2292 metasound_decoder_select="lsp mdct sinewin"
2293 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2294 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2295 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2296 mjpegb_decoder_select="mjpeg_decoder"
2297 mlp_decoder_select="mlp_parser"
2298 motionpixels_decoder_select="bswapdsp"
2299 mp1_decoder_select="mpegaudio"
2300 mp1float_decoder_select="mpegaudio"
2301 mp2_decoder_select="mpegaudio"
2302 mp2float_decoder_select="mpegaudio"
2303 mp3_decoder_select="mpegaudio"
2304 mp3adu_decoder_select="mpegaudio"
2305 mp3adufloat_decoder_select="mpegaudio"
2306 mp3float_decoder_select="mpegaudio"
2307 mp3on4_decoder_select="mpegaudio"
2308 mp3on4float_decoder_select="mpegaudio"
2309 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2310 mpc8_decoder_select="mpegaudiodsp"
2311 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2312 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2313 mpegvideo_decoder_select="mpegvideo"
2314 mpeg1video_decoder_select="mpegvideo"
2315 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2316 mpeg2video_decoder_select="mpegvideo"
2317 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2318 mpeg2_qsv_decoder_deps="libmfx"
2319 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2320 mpeg2_qsv_encoder_deps="libmfx"
2321 mpeg2_qsv_encoder_select="qsvenc"
2322 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2323 mpeg4_encoder_select="h263_encoder"
2324 msa1_decoder_select="mss34dsp"
2325 msmpeg4v1_decoder_select="h263_decoder"
2326 msmpeg4v2_decoder_select="h263_decoder"
2327 msmpeg4v2_encoder_select="h263_encoder"
2328 msmpeg4v3_decoder_select="h263_decoder"
2329 msmpeg4v3_encoder_select="h263_encoder"
2330 mss2_decoder_select="vc1_decoder"
2331 mts2_decoder_select="mss34dsp"
2332 mxpeg_decoder_select="mjpeg_decoder"
2333 nellymoser_decoder_select="mdct sinewin"
2334 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2335 nuv_decoder_select="idctdsp lzo"
2336 on2avc_decoder_select="mdct"
2337 opus_decoder_deps="swresample"
2338 opus_decoder_select="imdct15"
2339 png_decoder_select="zlib"
2340 png_encoder_select="huffyuvencdsp zlib"
2341 prores_decoder_select="blockdsp idctdsp"
2342 prores_encoder_select="fdctdsp"
2343 qcelp_decoder_select="lsp"
2344 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2345 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2346 ra_144_decoder_select="audiodsp"
2347 ralf_decoder_select="golomb"
2348 rawvideo_decoder_select="bswapdsp"
2349 rscc_decoder_select="zlib"
2350 rtjpeg_decoder_select="me_cmp"
2351 rv10_decoder_select="h263_decoder"
2352 rv10_encoder_select="h263_encoder"
2353 rv20_decoder_select="h263_decoder"
2354 rv20_encoder_select="h263_encoder"
2355 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2356 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2357 screenpresso_decoder_select="zlib"
2358 shorten_decoder_select="golomb"
2359 sipr_decoder_select="lsp"
2360 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2361 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2362 sonic_decoder_select="golomb rangecoder"
2363 sonic_encoder_select="golomb rangecoder"
2364 sonic_ls_encoder_select="golomb rangecoder"
2365 sp5x_decoder_select="mjpeg_decoder"
2366 svq1_decoder_select="hpeldsp"
2367 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2368 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2369 svq3_decoder_suggest="zlib"
2370 tak_decoder_select="audiodsp"
2371 tdsc_decoder_select="zlib mjpeg_decoder"
2372 theora_decoder_select="vp3_decoder"
2373 thp_decoder_select="mjpeg_decoder"
2374 tiff_decoder_suggest="zlib lzma"
2375 tiff_encoder_suggest="zlib"
2376 truehd_decoder_select="mlp_parser"
2377 truemotion2_decoder_select="bswapdsp"
2378 truespeech_decoder_select="bswapdsp"
2379 tscc_decoder_select="zlib"
2380 twinvq_decoder_select="mdct lsp sinewin"
2381 txd_decoder_select="texturedsp"
2382 utvideo_decoder_select="bswapdsp"
2383 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2384 vble_decoder_select="huffyuvdsp"
2385 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2386 vc1image_decoder_select="vc1_decoder"
2387 vc1_qsv_decoder_deps="libmfx"
2388 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2389 vorbis_decoder_select="mdct"
2390 vorbis_encoder_select="mdct"
2391 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2392 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2393 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2394 vp6a_decoder_select="vp6_decoder"
2395 vp6f_decoder_select="vp6_decoder"
2396 vp7_decoder_select="h264pred videodsp vp8dsp"
2397 vp8_decoder_select="h264pred videodsp vp8dsp"
2398 vp9_decoder_select="videodsp vp9_parser"
2399 webp_decoder_select="vp8_decoder"
2400 wmalossless_decoder_select="llauddsp"
2401 wmapro_decoder_select="mdct sinewin wma_freqs"
2402 wmav1_decoder_select="mdct sinewin wma_freqs"
2403 wmav1_encoder_select="mdct sinewin wma_freqs"
2404 wmav2_decoder_select="mdct sinewin wma_freqs"
2405 wmav2_encoder_select="mdct sinewin wma_freqs"
2406 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2407 wmv1_decoder_select="h263_decoder"
2408 wmv1_encoder_select="h263_encoder"
2409 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2410 wmv2_encoder_select="h263_encoder wmv2dsp"
2411 wmv3_decoder_select="vc1_decoder"
2412 wmv3image_decoder_select="wmv3_decoder"
2413 zerocodec_decoder_select="zlib"
2414 zlib_decoder_select="zlib"
2415 zlib_encoder_select="zlib"
2416 zmbv_decoder_select="zlib"
2417 zmbv_encoder_select="zlib"
2418
2419 # hardware accelerators
2420 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2421 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2422 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2423 vaapi_deps="va_va_h"
2424 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2425 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2426 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2427 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2428 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2429 xvmc_deps="X11_extensions_XvMClib_h"
2430
2431 h263_vaapi_hwaccel_deps="vaapi"
2432 h263_vaapi_hwaccel_select="h263_decoder"
2433 h263_videotoolbox_hwaccel_deps="videotoolbox"
2434 h263_videotoolbox_hwaccel_select="h263_decoder"
2435 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2436 h264_d3d11va_hwaccel_deps="d3d11va"
2437 h264_d3d11va_hwaccel_select="h264_decoder"
2438 h264_dxva2_hwaccel_deps="dxva2"
2439 h264_dxva2_hwaccel_select="h264_decoder"
2440 h264_mmal_decoder_deps="mmal"
2441 h264_mmal_hwaccel_deps="mmal"
2442 h264_mmal_decoder_select="h264_decoder"
2443 h264_mmal_encoder_deps="mmal"
2444 h264_qsv_hwaccel_deps="libmfx"
2445 h264_vaapi_hwaccel_deps="vaapi"
2446 h264_vaapi_hwaccel_select="h264_decoder"
2447 h264_vda_decoder_deps="vda"
2448 h264_vda_decoder_select="h264_decoder"
2449 h264_vda_hwaccel_deps="vda"
2450 h264_vda_hwaccel_select="h264_decoder"
2451 h264_vda_old_hwaccel_deps="vda"
2452 h264_vda_old_hwaccel_select="h264_decoder"
2453 h264_vdpau_decoder_deps="vdpau"
2454 h264_vdpau_decoder_select="h264_decoder"
2455 h264_vdpau_hwaccel_deps="vdpau"
2456 h264_vdpau_hwaccel_select="h264_decoder"
2457 h264_videotoolbox_hwaccel_deps="videotoolbox"
2458 h264_videotoolbox_hwaccel_select="h264_decoder"
2459 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2460 hevc_d3d11va_hwaccel_select="hevc_decoder"
2461 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2462 hevc_dxva2_hwaccel_select="hevc_decoder"
2463 hevc_qsv_hwaccel_deps="libmfx"
2464 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2465 hevc_vaapi_hwaccel_select="hevc_decoder"
2466 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2467 hevc_vdpau_hwaccel_select="hevc_decoder"
2468 mpeg_vdpau_decoder_deps="vdpau"
2469 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2470 mpeg_xvmc_hwaccel_deps="xvmc"
2471 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2472 mpeg1_vdpau_decoder_deps="vdpau"
2473 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2474 mpeg1_vdpau_hwaccel_deps="vdpau"
2475 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2476 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2477 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2478 mpeg1_xvmc_hwaccel_deps="xvmc"
2479 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2480 mpeg2_crystalhd_decoder_select="crystalhd"
2481 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2482 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2483 mpeg2_dxva2_hwaccel_deps="dxva2"
2484 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2485 mpeg2_mmal_decoder_deps="mmal"
2486 mpeg2_mmal_hwaccel_deps="mmal"
2487 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2488 mpeg2_qsv_hwaccel_deps="libmfx"
2489 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2490 mpeg2_vaapi_hwaccel_deps="vaapi"
2491 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2492 mpeg2_vdpau_hwaccel_deps="vdpau"
2493 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2494 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2495 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2496 mpeg2_xvmc_hwaccel_deps="xvmc"
2497 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2498 mpeg4_crystalhd_decoder_select="crystalhd"
2499 mpeg4_vaapi_hwaccel_deps="vaapi"
2500 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2501 mpeg4_vdpau_decoder_deps="vdpau"
2502 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2503 mpeg4_vdpau_hwaccel_deps="vdpau"
2504 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2505 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2506 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2507 msmpeg4_crystalhd_decoder_select="crystalhd"
2508 vc1_crystalhd_decoder_select="crystalhd"
2509 vc1_d3d11va_hwaccel_deps="d3d11va"
2510 vc1_d3d11va_hwaccel_select="vc1_decoder"
2511 vc1_dxva2_hwaccel_deps="dxva2"
2512 vc1_dxva2_hwaccel_select="vc1_decoder"
2513 vc1_vaapi_hwaccel_deps="vaapi"
2514 vc1_vaapi_hwaccel_select="vc1_decoder"
2515 vc1_vdpau_decoder_deps="vdpau"
2516 vc1_vdpau_decoder_select="vc1_decoder"
2517 vc1_vdpau_hwaccel_deps="vdpau"
2518 vc1_vdpau_hwaccel_select="vc1_decoder"
2519 vc1_qsv_hwaccel_deps="libmfx"
2520 vc1_qsv_hwaccel_select="qsvdec_vc1"
2521 wmv3_crystalhd_decoder_select="crystalhd"
2522 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2523 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2524 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2525 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2526 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2527
2528 # parsers
2529 h264_parser_select="h264_decoder"
2530 hevc_parser_select="golomb"
2531 mpegvideo_parser_select="mpegvideo"
2532 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2533 vc1_parser_select="mpegvideo startcode vc1_decoder"
2534
2535 # bitstream_filters
2536 mjpeg2jpeg_bsf_select="jpegtables"
2537
2538 # external libraries
2539 chromaprint_muxer_deps="chromaprint"
2540 libaacplus_encoder_deps="libaacplus"
2541 libcelt_decoder_deps="libcelt"
2542 libdcadec_decoder_deps="libdcadec"
2543 libfaac_encoder_deps="libfaac"
2544 libfaac_encoder_select="audio_frame_queue"
2545 libfdk_aac_decoder_deps="libfdk_aac"
2546 libfdk_aac_encoder_deps="libfdk_aac"
2547 libfdk_aac_encoder_select="audio_frame_queue"
2548 libgme_demuxer_deps="libgme"
2549 libgsm_decoder_deps="libgsm"
2550 libgsm_encoder_deps="libgsm"
2551 libgsm_ms_decoder_deps="libgsm"
2552 libgsm_ms_encoder_deps="libgsm"
2553 libilbc_decoder_deps="libilbc"
2554 libilbc_encoder_deps="libilbc"
2555 libkvazaar_encoder_deps="libkvazaar"
2556 libmodplug_demuxer_deps="libmodplug"
2557 libmp3lame_encoder_deps="libmp3lame"
2558 libmp3lame_encoder_select="audio_frame_queue"
2559 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2560 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2561 libopencore_amrnb_encoder_select="audio_frame_queue"
2562 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2563 libopenh264_encoder_deps="libopenh264"
2564 libopenjpeg_decoder_deps="libopenjpeg"
2565 libopenjpeg_encoder_deps="libopenjpeg"
2566 libopus_decoder_deps="libopus"
2567 libopus_encoder_deps="libopus"
2568 libopus_encoder_select="audio_frame_queue"
2569 libquvi_demuxer_deps="libquvi"
2570 libschroedinger_decoder_deps="libschroedinger"
2571 libschroedinger_encoder_deps="libschroedinger"
2572 libshine_encoder_deps="libshine"
2573 libshine_encoder_select="audio_frame_queue"
2574 libspeex_decoder_deps="libspeex"
2575 libspeex_encoder_deps="libspeex"
2576 libspeex_encoder_select="audio_frame_queue"
2577 libstagefright_h264_decoder_deps="libstagefright_h264"
2578 libtheora_encoder_deps="libtheora"
2579 libtwolame_encoder_deps="libtwolame"
2580 libvo_aacenc_encoder_deps="libvo_aacenc"
2581 libvo_aacenc_encoder_select="audio_frame_queue"
2582 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2583 libvorbis_decoder_deps="libvorbis"
2584 libvorbis_encoder_deps="libvorbis"
2585 libvorbis_encoder_select="audio_frame_queue"
2586 libvpx_vp8_decoder_deps="libvpx"
2587 libvpx_vp8_encoder_deps="libvpx"
2588 libvpx_vp9_decoder_deps="libvpx"
2589 libvpx_vp9_encoder_deps="libvpx"
2590 libwavpack_encoder_deps="libwavpack"
2591 libwebp_encoder_deps="libwebp"
2592 libwebp_anim_encoder_deps="libwebp"
2593 libx262_encoder_deps="libx262"
2594 libx264_encoder_deps="libx264"
2595 libx264rgb_encoder_deps="libx264"
2596 libx264rgb_encoder_select="libx264_encoder"
2597 libx265_encoder_deps="libx265"
2598 libxavs_encoder_deps="libxavs"
2599 libxvid_encoder_deps="libxvid"
2600 libutvideo_decoder_deps="libutvideo"
2601 libutvideo_encoder_deps="libutvideo"
2602 libzvbi_teletext_decoder_deps="libzvbi"
2603 nvenc_encoder_deps="nvenc"
2604 nvenc_h264_encoder_deps="nvenc"
2605 nvenc_hevc_encoder_deps="nvenc"
2606
2607 # demuxers / muxers
2608 ac3_demuxer_select="ac3_parser"
2609 asf_demuxer_select="riffdec"
2610 asf_o_demuxer_select="riffdec"
2611 asf_muxer_select="riffenc"
2612 asf_stream_muxer_select="asf_muxer"
2613 avi_demuxer_select="riffdec exif"
2614 avi_muxer_select="riffenc"
2615 avisynth_demuxer_deps="avisynth"
2616 avisynth_demuxer_select="riffdec"
2617 caf_demuxer_select="riffdec"
2618 dash_muxer_select="mp4_muxer"
2619 dirac_demuxer_select="dirac_parser"
2620 dts_demuxer_select="dca_parser"
2621 dtshd_demuxer_select="dca_parser"
2622 dv_demuxer_select="dvprofile"
2623 dv_muxer_select="dvprofile"
2624 dxa_demuxer_select="riffdec"
2625 eac3_demuxer_select="ac3_parser"
2626 f4v_muxer_select="mov_muxer"
2627 flac_demuxer_select="flac_parser"
2628 hds_muxer_select="flv_muxer"
2629 hls_muxer_select="mpegts_muxer"
2630 image2_alias_pix_demuxer_select="image2_demuxer"
2631 image2_brender_pix_demuxer_select="image2_demuxer"
2632 ipod_muxer_select="mov_muxer"
2633 ismv_muxer_select="mov_muxer"
2634 libnut_demuxer_deps="libnut"
2635 libnut_muxer_deps="libnut"
2636 matroska_audio_muxer_select="matroska_muxer"
2637 matroska_demuxer_select="riffdec"
2638 matroska_demuxer_suggest="bzlib lzo zlib"
2639 matroska_muxer_select="riffenc"
2640 mmf_muxer_select="riffenc"
2641 mov_demuxer_select="riffdec"
2642 mov_demuxer_suggest="zlib"
2643 mov_muxer_select="riffenc rtpenc_chain"
2644 mp3_demuxer_select="mpegaudio_parser"
2645 mp4_muxer_select="mov_muxer"
2646 mpegts_muxer_select="adts_muxer latm_muxer"
2647 mpegtsraw_demuxer_select="mpegts_demuxer"
2648 mxf_d10_muxer_select="mxf_muxer"
2649 mxf_opatom_muxer_select="mxf_muxer"
2650 nut_muxer_select="riffenc"
2651 nuv_demuxer_select="riffdec"
2652 oga_muxer_select="ogg_muxer"
2653 ogg_demuxer_select="golomb"
2654 opus_muxer_select="ogg_muxer"
2655 psp_muxer_select="mov_muxer"
2656 rtp_demuxer_select="sdp_demuxer"
2657 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2658 rtsp_demuxer_select="http_protocol rtpdec"
2659 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2660 sap_demuxer_select="sdp_demuxer"
2661 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2662 sdp_demuxer_select="rtpdec"
2663 smoothstreaming_muxer_select="ismv_muxer"
2664 spdif_muxer_select="aac_parser"
2665 spx_muxer_select="ogg_muxer"
2666 tak_demuxer_select="tak_parser"
2667 tg2_muxer_select="mov_muxer"
2668 tgp_muxer_select="mov_muxer"
2669 vobsub_demuxer_select="mpegps_demuxer"
2670 w64_demuxer_select="wav_demuxer"
2671 w64_muxer_select="wav_muxer"
2672 wav_demuxer_select="riffdec"
2673 wav_muxer_select="riffenc"
2674 webm_muxer_select="riffenc"
2675 wtv_demuxer_select="riffdec"
2676 wtv_muxer_select="riffenc"
2677 xmv_demuxer_select="riffdec"
2678 xwma_demuxer_select="riffdec"
2679
2680 # indevs / outdevs
2681 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2682 alsa_outdev_deps="alsa_asoundlib_h"
2683 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2684 avfoundation_indev_select="avfoundation"
2685 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2686 caca_outdev_deps="libcaca"
2687 decklink_outdev_deps="decklink pthreads"
2688 decklink_outdev_extralibs="-lstdc++"
2689 decklink_indev_deps="decklink pthreads"
2690 decklink_indev_extralibs="-lstdc++"
2691 dshow_indev_deps="IBaseFilter"
2692 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2693 dv1394_indev_deps="dv1394"
2694 dv1394_indev_select="dv_demuxer"
2695 fbdev_indev_deps="linux_fb_h"
2696 fbdev_outdev_deps="linux_fb_h"
2697 gdigrab_indev_deps="CreateDIBSection"
2698 gdigrab_indev_extralibs="-lgdi32"
2699 gdigrab_indev_select="bmp_decoder"
2700 iec61883_indev_deps="libiec61883"
2701 jack_indev_deps="jack_jack_h sem_timedwait"
2702 lavfi_indev_deps="avfilter"
2703 libcdio_indev_deps="libcdio"
2704 libdc1394_indev_deps="libdc1394"
2705 libv4l2_indev_deps="libv4l2"
2706 openal_indev_deps="openal"
2707 opengl_outdev_deps="opengl"
2708 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2709 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2710 pulse_indev_deps="libpulse"
2711 pulse_outdev_deps="libpulse"
2712 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2713 qtkit_indev_select="qtkit"
2714 sdl_outdev_deps="sdl"
2715 sndio_indev_deps="sndio_h"
2716 sndio_outdev_deps="sndio_h"
2717 v4l_indev_deps="linux_videodev_h"
2718 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2719 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2720 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2721 vfwcap_indev_extralibs="-lavicap32"
2722 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2723 xv_outdev_extralibs="-lXv -lX11 -lXext"
2724 x11grab_indev_deps="x11grab"
2725 x11grab_xcb_indev_deps="libxcb"
2726
2727 # protocols
2728 async_protocol_deps="threads"
2729 bluray_protocol_deps="libbluray"
2730 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2731 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2732 ffrtmpcrypt_protocol_select="tcp_protocol"
2733 ffrtmphttp_protocol_deps="!librtmp_protocol"
2734 ffrtmphttp_protocol_select="http_protocol"
2735 ftp_protocol_select="tcp_protocol"
2736 gopher_protocol_select="network"
2737 http_protocol_select="tcp_protocol"
2738 httpproxy_protocol_select="tcp_protocol"
2739 https_protocol_select="tls_protocol"
2740 icecast_protocol_select="http_protocol"
2741 librtmp_protocol_deps="librtmp"
2742 librtmpe_protocol_deps="librtmp"
2743 librtmps_protocol_deps="librtmp"
2744 librtmpt_protocol_deps="librtmp"
2745 librtmpte_protocol_deps="librtmp"
2746 libsmbclient_protocol_deps="libsmbclient gplv3"
2747 libssh_protocol_deps="libssh"
2748 mmsh_protocol_select="http_protocol"
2749 mmst_protocol_select="network"
2750 rtmp_protocol_deps="!librtmp_protocol"
2751 rtmp_protocol_select="tcp_protocol"
2752 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2753 rtmps_protocol_deps="!librtmp_protocol"
2754 rtmps_protocol_select="tls_protocol"
2755 rtmpt_protocol_select="ffrtmphttp_protocol"
2756 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2757 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2758 rtp_protocol_select="udp_protocol"
2759 sctp_protocol_deps="struct_sctp_event_subscribe"
2760 sctp_protocol_select="network"
2761 srtp_protocol_select="rtp_protocol"
2762 tcp_protocol_select="network"
2763 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2764 tls_gnutls_protocol_select="tcp_protocol"
2765 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2766 tls_openssl_protocol_select="tcp_protocol"
2767 tls_securetransport_protocol_deps="securetransport"
2768 tls_securetransport_protocol_select="tcp_protocol"
2769 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2770 udp_protocol_select="network"
2771 udplite_protocol_select="network"
2772 unix_protocol_deps="sys_un_h"
2773 unix_protocol_select="network"
2774
2775 # filters
2776 amovie_filter_deps="avcodec avformat"
2777 aresample_filter_deps="swresample"
2778 ass_filter_deps="libass"
2779 asyncts_filter_deps="avresample"
2780 atempo_filter_deps="avcodec"
2781 atempo_filter_select="rdft"
2782 azmq_filter_deps="libzmq"
2783 blackframe_filter_deps="gpl"
2784 boxblur_filter_deps="gpl"
2785 bs2b_filter_deps="libbs2b"
2786 colormatrix_filter_deps="gpl"
2787 cover_rect_filter_deps="avcodec avformat gpl"
2788 cropdetect_filter_deps="gpl"
2789 delogo_filter_deps="gpl"
2790 deshake_filter_select="pixelutils"
2791 drawtext_filter_deps="libfreetype"
2792 dynaudnorm_filter_deps="copysign erf"
2793 ebur128_filter_deps="gpl"
2794 eq_filter_deps="gpl"
2795 fftfilt_filter_deps="avcodec"
2796 fftfilt_filter_select="rdft"
2797 flite_filter_deps="libflite"
2798 find_rect_filter_deps="avcodec avformat gpl"
2799 frei0r_filter_deps="frei0r dlopen"
2800 frei0r_src_filter_deps="frei0r dlopen"
2801 fspp_filter_deps="gpl"
2802 geq_filter_deps="gpl"
2803 histeq_filter_deps="gpl"
2804 hqdn3d_filter_deps="gpl"
2805 interlace_filter_deps="gpl"
2806 kerndeint_filter_deps="gpl"
2807 ladspa_filter_deps="ladspa dlopen"
2808 mcdeint_filter_deps="avcodec gpl"
2809 movie_filter_deps="avcodec avformat"
2810 mpdecimate_filter_deps="gpl"
2811 mpdecimate_filter_select="pixelutils"
2812 mptestsrc_filter_deps="gpl"
2813 negate_filter_deps="lut_filter"
2814 perspective_filter_deps="gpl"
2815 pp7_filter_deps="gpl"
2816 ocr_filter_deps="libtesseract"
2817 ocv_filter_deps="libopencv"
2818 owdenoise_filter_deps="gpl"
2819 pan_filter_deps="swresample"
2820 phase_filter_deps="gpl"
2821 pp_filter_deps="gpl postproc"
2822 pullup_filter_deps="gpl"
2823 removelogo_filter_deps="avcodec avformat swscale"
2824 repeatfields_filter_deps="gpl"
2825 resample_filter_deps="avresample"
2826 rubberband_filter_deps="librubberband"
2827 sab_filter_deps="gpl swscale"
2828 scale_filter_deps="swscale"
2829 scale2ref_filter_deps="swscale"
2830 select_filter_select="pixelutils"
2831 smartblur_filter_deps="gpl swscale"
2832 showcqt_filter_deps="avcodec avformat swscale"
2833 showcqt_filter_select="fft"
2834 showfreqs_filter_deps="avcodec"
2835 showfreqs_filter_select="fft"
2836 showspectrum_filter_deps="avcodec"
2837 showspectrum_filter_select="rdft"
2838 spp_filter_deps="gpl avcodec"
2839 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2840 stereo3d_filter_deps="gpl"
2841 subtitles_filter_deps="avformat avcodec libass"
2842 super2xsai_filter_deps="gpl"
2843 tinterlace_filter_deps="gpl"
2844 vidstabdetect_filter_deps="libvidstab"
2845 vidstabtransform_filter_deps="libvidstab"
2846 pixfmts_super2xsai_test_deps="super2xsai_filter"
2847 tinterlace_merge_test_deps="tinterlace_filter"
2848 tinterlace_pad_test_deps="tinterlace_filter"
2849 uspp_filter_deps="gpl avcodec"
2850 zmq_filter_deps="libzmq"
2851 zoompan_filter_deps="swscale"
2852 zscale_filter_deps="libzimg"
2853
2854 # examples
2855 avio_reading="avformat avcodec avutil"
2856 avio_dir_cmd="avformat avutil"
2857 avcodec_example_deps="avcodec avutil"
2858 decoding_encoding_example_deps="avcodec avformat avutil"
2859 demuxing_decoding_example_deps="avcodec avformat avutil"
2860 extract_mvs_example_deps="avcodec avformat avutil"
2861 filter_audio_example_deps="avfilter avutil"
2862 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2863 filtering_video_example_deps="avfilter avcodec avformat avutil"
2864 metadata_example_deps="avformat avutil"
2865 muxing_example_deps="avcodec avformat avutil swscale"
2866 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2867 remuxing_example_deps="avcodec avformat avutil"
2868 resampling_audio_example_deps="avutil swresample"
2869 scaling_video_example_deps="avutil swscale"
2870 transcode_aac_example_deps="avcodec avformat swresample"
2871 transcoding_example_deps="avfilter avcodec avformat avutil"
2872
2873 # libraries, in linking order
2874 avcodec_deps="avutil"
2875 avdevice_deps="avformat avcodec avutil"
2876 avfilter_deps="avutil"
2877 avformat_deps="avcodec avutil"
2878 avresample_deps="avutil"
2879 postproc_deps="avutil gpl"
2880 swresample_deps="avutil"
2881 swscale_deps="avutil"
2882
2883 # programs
2884 ffmpeg_deps="avcodec avfilter avformat swresample"
2885 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2886                null_filter
2887                setpts_filter trim_filter"
2888 ffplay_deps="avcodec avformat swscale swresample sdl"
2889 ffplay_libs='$sdl_libs'
2890 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2891 ffprobe_deps="avcodec avformat"
2892 ffserver_deps="avformat fork sarestart"
2893 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2894
2895 # documentation
2896 podpages_deps="perl"
2897 manpages_deps="perl pod2man"
2898 htmlpages_deps="perl"
2899 htmlpages_deps_any="makeinfo_html texi2html"
2900 txtpages_deps="perl makeinfo"
2901 doc_deps_any="manpages htmlpages podpages txtpages"
2902
2903 # default parameters
2904
2905 logfile="config.log"
2906
2907 # installation paths
2908 prefix_default="/usr/local"
2909 bindir_default='${prefix}/bin'
2910 datadir_default='${prefix}/share/ffmpeg'
2911 docdir_default='${prefix}/share/doc/ffmpeg'
2912 incdir_default='${prefix}/include'
2913 libdir_default='${prefix}/lib'
2914 mandir_default='${prefix}/share/man'
2915
2916 # toolchain
2917 ar_default="ar"
2918 cc_default="gcc"
2919 cxx_default="g++"
2920 host_cc_default="gcc"
2921 cp_f="cp -f"
2922 doxygen_default="doxygen"
2923 install="install"
2924 ln_s="ln -s -f"
2925 nm_default="nm -g"
2926 objformat="elf"
2927 pkg_config_default=pkg-config
2928 ranlib_default="ranlib"
2929 strip_default="strip"
2930 yasmexe_default="yasm"
2931 windres_default="windres"
2932
2933 # OS
2934 target_os_default=$(tolower $(uname -s))
2935 host_os=$target_os_default
2936
2937 # machine
2938 if test "$target_os_default" = aix; then
2939     arch_default=$(uname -p)
2940     strip_default="strip -X32_64"
2941 else
2942     arch_default=$(uname -m)
2943 fi
2944 cpu="generic"
2945 intrinsics="none"
2946
2947 # configurable options
2948 enable $PROGRAM_LIST
2949 enable $DOCUMENT_LIST
2950 enable $EXAMPLE_LIST
2951 enable $(filter_out avresample $LIBRARY_LIST)
2952 enable stripping
2953
2954 enable asm
2955 enable debug
2956 enable doc
2957 enable faan faandct faanidct
2958 enable optimizations
2959 enable runtime_cpudetect
2960 enable safe_bitstream_reader
2961 enable static
2962 enable swscale_alpha
2963 enable valgrind_backtrace
2964
2965 sws_max_filter_size_default=256
2966 set_default sws_max_filter_size
2967
2968 # Enable hwaccels by default.
2969 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2970 enable xlib
2971
2972 # build settings
2973 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2974 LIBPREF="lib"
2975 LIBSUF=".a"
2976 FULLNAME='$(NAME)$(BUILDSUF)'
2977 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2978 SLIBPREF="lib"
2979 SLIBSUF=".so"
2980 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2981 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2982 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2983 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2984 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2985 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2986
2987 asflags_filter=echo
2988 cflags_filter=echo
2989 ldflags_filter=echo
2990
2991 AS_C='-c'
2992 AS_O='-o $@'
2993 CC_C='-c'
2994 CC_E='-E -o $@'
2995 CC_O='-o $@'
2996 CXX_C='-c'
2997 CXX_O='-o $@'
2998 LD_O='-o $@'
2999 LD_LIB='-l%'
3000 LD_PATH='-L'
3001 HOSTCC_C='-c'
3002 HOSTCC_E='-E -o $@'
3003 HOSTCC_O='-o $@'
3004 HOSTLD_O='-o $@'
3005
3006 host_libs='-lm'
3007 host_cflags_filter=echo
3008 host_ldflags_filter=echo
3009
3010 target_path='$(CURDIR)'
3011
3012 # since the object filename is not given with the -MM flag, the compiler
3013 # is only able to print the basename, and we must add the path ourselves
3014 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3015 DEPFLAGS='-MM'
3016
3017 # find source path
3018 if test -f configure; then
3019     source_path=.
3020 else
3021     source_path=$(cd $(dirname "$0"); pwd)
3022     case "$source_path" in
3023         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3024     esac
3025     test -e "$source_path/config.h" &&
3026         die "Out of tree builds are impossible with config.h in source dir."
3027 fi
3028
3029 for v in "$@"; do
3030     r=${v#*=}
3031     l=${v%"$r"}
3032     r=$(sh_quote "$r")
3033     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3034 done
3035
3036 find_things(){
3037     thing=$1
3038     pattern=$2
3039     file=$source_path/$3
3040     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3041 }
3042
3043 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3044 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3045 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3046 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3047 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3048 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3049 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3050 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3051 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3052 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3053 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3054
3055 ALL_COMPONENTS="
3056     $BSF_LIST
3057     $DECODER_LIST
3058     $DEMUXER_LIST
3059     $ENCODER_LIST
3060     $FILTER_LIST
3061     $HWACCEL_LIST
3062     $INDEV_LIST
3063     $MUXER_LIST
3064     $OUTDEV_LIST
3065     $PARSER_LIST
3066     $PROTOCOL_LIST
3067 "
3068
3069 for n in $COMPONENT_LIST; do
3070     v=$(toupper ${n%s})_LIST
3071     eval enable \$$v
3072     eval ${n}_if_any="\$$v"
3073 done
3074
3075 enable $ARCH_EXT_LIST
3076
3077 die_unknown(){
3078     echo "Unknown option \"$1\"."
3079     echo "See $0 --help for available options."
3080     exit 1
3081 }
3082
3083 print_in_columns() {
3084     cols=$(expr $ncols / 24)
3085     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3086 }
3087
3088 show_list() {
3089     suffix=_$1
3090     shift
3091     echo $* | sed s/$suffix//g | print_in_columns
3092     exit 0
3093 }
3094
3095 rand_list(){
3096     IFS=', '
3097     set -- $*
3098     unset IFS
3099     for thing; do
3100         comp=${thing%:*}
3101         prob=${thing#$comp}
3102         prob=${prob#:}
3103         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3104         echo "prob ${prob:-0.5}"
3105         printf '%s\n' $comp
3106     done
3107 }
3108
3109 do_random(){
3110     action=$1
3111     shift
3112     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3113     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3114 }
3115
3116 for opt do
3117     optval="${opt#*=}"
3118     case "$opt" in
3119         --extra-ldflags=*)
3120             add_ldflags $optval
3121         ;;
3122         --extra-ldexeflags=*)
3123             add_ldexeflags $optval
3124         ;;
3125         --extra-ldlibflags=*)
3126             add_ldlibflags $optval
3127         ;;
3128         --extra-libs=*)
3129             add_extralibs $optval
3130         ;;
3131         --disable-devices)
3132             disable $INDEV_LIST $OUTDEV_LIST
3133         ;;
3134         --enable-debug=*)
3135             debuglevel="$optval"
3136         ;;
3137         --disable-programs)
3138             disable $PROGRAM_LIST
3139         ;;
3140         --disable-everything)
3141             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3142         ;;
3143         --disable-all)
3144             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3145             disable $LIBRARY_LIST $PROGRAM_LIST doc
3146             enable avutil
3147         ;;
3148         --enable-random|--disable-random)
3149             action=${opt%%-random}
3150             do_random ${action#--} $COMPONENT_LIST
3151         ;;
3152         --enable-random=*|--disable-random=*)
3153             action=${opt%%-random=*}
3154             do_random ${action#--} $optval
3155         ;;
3156         --enable-*=*|--disable-*=*)
3157             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3158             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3159             eval list=\$$(toupper $thing)_LIST
3160             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3161             list=$(filter "$name" $list)
3162             [ "$list" = "" ] && warn "Option $opt did not match anything"
3163             $action $list
3164         ;;
3165         --enable-?*|--disable-?*)
3166             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3167             if is_in $option $COMPONENT_LIST; then
3168                 test $action = disable && action=unset
3169                 eval $action \$$(toupper ${option%s})_LIST
3170             elif is_in $option $CMDLINE_SELECT; then
3171                 $action $option
3172             else
3173                 die_unknown $opt
3174             fi
3175         ;;
3176         --list-*)
3177             NAME="${opt#--list-}"
3178             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3179             NAME=${NAME%s}
3180             eval show_list $NAME \$$(toupper $NAME)_LIST
3181         ;;
3182         --help|-h) show_help
3183         ;;
3184         --fatal-warnings) enable fatal_warnings
3185         ;;
3186         *)
3187             optname="${opt%%=*}"
3188             optname="${optname#--}"
3189             optname=$(echo "$optname" | sed 's/-/_/g')
3190             if is_in $optname $CMDLINE_SET; then
3191                 eval $optname='$optval'
3192             elif is_in $optname $CMDLINE_APPEND; then
3193                 append $optname "$optval"
3194             else
3195                 die_unknown $opt
3196             fi
3197         ;;
3198     esac
3199 done
3200
3201 for e in $env; do
3202     eval "export $e"
3203 done
3204
3205 disabled logging && logfile=/dev/null
3206
3207 # Disable all the library-specific components if the library itself
3208 # is disabled, see AVCODEC_LIST and following _LIST variables.
3209
3210 disable_components(){
3211     disabled ${1} && disable $(
3212         eval components="\$$(toupper ${1})_COMPONENTS"
3213         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3214     )
3215 }
3216
3217 map 'disable_components $v' $LIBRARY_LIST
3218
3219 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3220 set >> $logfile
3221
3222 test -n "$valgrind" && toolchain="valgrind-memcheck"
3223
3224 case "$toolchain" in
3225     clang-asan)
3226         cc_default="clang"
3227         add_cflags  -fsanitize=address
3228         add_ldflags -fsanitize=address
3229     ;;
3230     clang-tsan)
3231         cc_default="clang"
3232         add_cflags  -fsanitize=thread -pie
3233         add_ldflags -fsanitize=thread -pie
3234     ;;
3235     clang-usan)
3236         cc_default="clang"
3237         add_cflags  -fsanitize=undefined
3238         add_ldflags -fsanitize=undefined
3239     ;;
3240     gcc-asan)
3241         cc_default="gcc"
3242         add_cflags  -fsanitize=address
3243         add_ldflags -fsanitize=address
3244     ;;
3245     gcc-tsan)
3246         cc_default="gcc"
3247         add_cflags  -fsanitize=thread -pie -fPIC
3248         add_ldflags -fsanitize=thread -pie -fPIC
3249     ;;
3250     gcc-usan)
3251         cc_default="gcc"
3252         add_cflags  -fsanitize=undefined
3253         add_ldflags -fsanitize=undefined
3254     ;;
3255     valgrind-massif)
3256         target_exec_default=${valgrind:-"valgrind"}
3257         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"
3258     ;;
3259     valgrind-memcheck)
3260         target_exec_default=${valgrind:-"valgrind"}
3261         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3262     ;;
3263     msvc)
3264         # Check whether the current MSVC version needs the C99 converter.
3265         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3266         # support enough of C99 to build ffmpeg. Default to the new
3267         # behaviour if the regexp was unable to match anything, since this
3268         # successfully parses the version number of existing supported
3269         # versions that require the converter (MSVC 2010 and 2012).
3270         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3271         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3272             cc_default="cl"
3273         else
3274             cc_default="c99wrap cl"
3275         fi
3276         ld_default="$source_path/compat/windows/mslink"
3277         nm_default="dumpbin -symbols"
3278         ar_default="lib"
3279         case "$arch" in
3280         arm*)
3281             as_default="armasm"
3282             ;;
3283         esac
3284         target_os_default="win32"
3285         # Use a relative path for TMPDIR. This makes sure all the
3286         # ffconf temp files are written with a relative path, avoiding
3287         # issues with msys/win32 path conversion for MSVC parameters
3288         # such as -Fo<file> or -out:<file>.
3289         TMPDIR=.
3290     ;;
3291     icl)
3292         cc_default="icl"
3293         ld_default="xilink"
3294         nm_default="dumpbin -symbols"
3295         ar_default="xilib"
3296         target_os_default="win32"
3297         TMPDIR=.
3298     ;;
3299     gcov)
3300         add_cflags  -fprofile-arcs -ftest-coverage
3301         add_ldflags -fprofile-arcs -ftest-coverage
3302     ;;
3303     hardened)
3304         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3305         add_cflags   -fno-strict-overflow -fstack-protector-all
3306         add_ldflags  -Wl,-z,relro -Wl,-z,now
3307     ;;
3308     ?*)
3309         die "Unknown toolchain $toolchain"
3310     ;;
3311 esac
3312
3313 test -n "$cross_prefix" && enable cross_compile
3314
3315 if enabled cross_compile; then
3316     test -n "$arch" && test -n "$target_os" ||
3317         die "Must specify target arch and OS when cross-compiling"
3318 fi
3319
3320 ar_default="${cross_prefix}${ar_default}"
3321 cc_default="${cross_prefix}${cc_default}"
3322 cxx_default="${cross_prefix}${cxx_default}"
3323 nm_default="${cross_prefix}${nm_default}"
3324 pkg_config_default="${cross_prefix}${pkg_config_default}"
3325 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3326     ranlib_default="${cross_prefix}${ranlib_default} -D"
3327 else
3328     ranlib_default="${cross_prefix}${ranlib_default}"
3329 fi
3330 strip_default="${cross_prefix}${strip_default}"
3331 windres_default="${cross_prefix}${windres_default}"
3332
3333 sysinclude_default="${sysroot}/usr/include"
3334
3335 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3336     target_exec target_os yasmexe
3337 enabled cross_compile || host_cc_default=$cc
3338 set_default host_cc
3339
3340 pkg_config_fail_message=""
3341 if ! $pkg_config --version >/dev/null 2>&1; then
3342     warn "$pkg_config not found, library detection may fail."
3343     pkg_config=false
3344 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3345     pkg_config_fail_message="
3346 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3347 fi
3348
3349 if test $doxygen != $doxygen_default && \
3350   ! $doxygen --version >/dev/null 2>&1; then
3351     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3352 fi
3353
3354 exesuf() {
3355     case $1 in
3356         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3357     esac
3358 }
3359
3360 EXESUF=$(exesuf $target_os)
3361 HOSTEXESUF=$(exesuf $host_os)
3362
3363 # set temporary file name
3364 : ${TMPDIR:=$TEMPDIR}
3365 : ${TMPDIR:=$TMP}
3366 : ${TMPDIR:=/tmp}
3367
3368 if [ -n "$tempprefix" ] ; then
3369     mktemp(){
3370         echo $tempprefix.${HOSTNAME}.${UID}
3371     }
3372 elif ! check_cmd mktemp -u XXXXXX; then
3373     # simple replacement for missing mktemp
3374     # NOT SAFE FOR GENERAL USE
3375     mktemp(){
3376         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3377     }
3378 fi
3379
3380 tmpfile(){
3381     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3382         (set -C; exec > $tmp) 2>/dev/null ||
3383         die "Unable to create temporary file in $TMPDIR."
3384     append TMPFILES $tmp
3385     eval $1=$tmp
3386 }
3387
3388 trap 'rm -f -- $TMPFILES' EXIT
3389
3390 tmpfile TMPASM .asm
3391 tmpfile TMPC   .c
3392 tmpfile TMPCPP .cpp
3393 tmpfile TMPE   $EXESUF
3394 tmpfile TMPH   .h
3395 tmpfile TMPM   .m
3396 tmpfile TMPO   .o
3397 tmpfile TMPS   .S
3398 tmpfile TMPSH  .sh
3399 tmpfile TMPV   .ver
3400
3401 unset -f mktemp
3402
3403 chmod +x $TMPE
3404
3405 # make sure we can execute files in $TMPDIR
3406 cat > $TMPSH 2>> $logfile <<EOF
3407 #! /bin/sh
3408 EOF
3409 chmod +x $TMPSH >> $logfile 2>&1
3410 if ! $TMPSH >> $logfile 2>&1; then
3411     cat <<EOF
3412 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3413 variable to another directory and make sure that it is not mounted noexec.
3414 EOF
3415     die "Sanity test failed."
3416 fi
3417
3418 armasm_flags(){
3419     for flag; do
3420         case $flag in
3421             # Filter out MSVC cl.exe options from cflags that shouldn't
3422             # be passed to gas-preprocessor
3423             -M[TD]*)                                            ;;
3424             *)                  echo $flag                      ;;
3425         esac
3426    done
3427 }
3428
3429 ccc_flags(){
3430     for flag; do
3431         case $flag in
3432             -std=c99)           echo -c99                       ;;
3433             -mcpu=*)            echo -arch ${flag#*=}           ;;
3434             -mieee)             echo -ieee                      ;;
3435             -O*|-fast)          echo $flag                      ;;
3436             -fno-math-errno)    echo -assume nomath_errno       ;;
3437             -g)                 echo -g3                        ;;
3438             -Wall)              echo -msg_enable level2         ;;
3439             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3440             -Wl,*)              echo $flag                      ;;
3441             -f*|-W*)                                            ;;
3442             *)                  echo $flag                      ;;
3443         esac
3444    done
3445 }
3446
3447 cparser_flags(){
3448     for flag; do
3449         case $flag in
3450             -Wno-switch)             echo -Wno-switch-enum ;;
3451             -Wno-format-zero-length) ;;
3452             -Wdisabled-optimization) ;;
3453             -Wno-pointer-sign)       echo -Wno-other ;;
3454             *)                       echo $flag ;;
3455         esac
3456     done
3457 }
3458
3459 msvc_common_flags(){
3460     for flag; do
3461         case $flag in
3462             # In addition to specifying certain flags under the compiler
3463             # specific filters, they must be specified here as well or else the
3464             # generic catch all at the bottom will print the original flag.
3465             -Wall)                ;;
3466             -std=c99)             ;;
3467             # Common flags
3468             -fomit-frame-pointer) ;;
3469             -g)                   echo -Z7 ;;
3470             -fno-math-errno)      ;;
3471             -fno-common)          ;;
3472             -fno-signed-zeros)    ;;
3473             -fPIC)                ;;
3474             -mthumb)              ;;
3475             -march=*)             ;;
3476             -lz)                  echo zlib.lib ;;
3477             -lavifil32)           echo vfw32.lib ;;
3478             -lavicap32)           echo vfw32.lib user32.lib ;;
3479             -l*)                  echo ${flag#-l}.lib ;;
3480             -LARGEADDRESSAWARE)   echo $flag ;;
3481             -L*)                  echo -libpath:${flag#-L} ;;
3482             *)                    echo $flag ;;
3483         esac
3484     done
3485 }
3486
3487 msvc_flags(){
3488     msvc_common_flags "$@"
3489     for flag; do
3490         case $flag in
3491             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3492                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3493                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3494                                        -wd4307 \
3495                                        -wd4273 -wd4554 -wd4701 ;;
3496         esac
3497     done
3498 }
3499
3500 icl_flags(){
3501     msvc_common_flags "$@"
3502     for flag; do
3503         case $flag in
3504             # Despite what Intel's documentation says -Wall, which is supported
3505             # on Windows, does enable remarks so disable them here.
3506             -Wall)                echo $flag -Qdiag-disable:remark ;;
3507             -std=c99)             echo -Qstd=c99 ;;
3508             -flto)                echo -ipo ;;
3509         esac
3510     done
3511 }
3512
3513 icc_flags(){
3514     for flag; do
3515         case $flag in
3516             -flto)                echo -ipo ;;
3517             *)                    echo $flag ;;
3518         esac
3519     done
3520 }
3521
3522 pgi_flags(){
3523     for flag; do
3524         case $flag in
3525             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3526             -fomit-frame-pointer) echo -Mnoframe ;;
3527             -g)                   echo -gopt ;;
3528             *)                    echo $flag ;;
3529         esac
3530     done
3531 }
3532
3533 suncc_flags(){
3534     for flag; do
3535         case $flag in
3536             -march=*|-mcpu=*)
3537                 case "${flag#*=}" in
3538                     native)                   echo -xtarget=native       ;;
3539                     v9|niagara)               echo -xarch=sparc          ;;
3540                     ultrasparc)               echo -xarch=sparcvis       ;;
3541                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3542                     i586|pentium)             echo -xchip=pentium        ;;
3543                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3544                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3545                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3546                     pentium4*)          echo -xtarget=pentium4           ;;
3547                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3548                     *-sse3)             echo -xarch=sse3                 ;;
3549                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3550                     bonnell)                   echo -xarch=ssse3         ;;
3551                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3552                     westmere)                  echo -xtarget=westmere    ;;
3553                     silvermont)                echo -xarch=sse4_2        ;;
3554                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3555                     core-avx*|ivybridge|haswell|broadwell)
3556                                                echo -xarch=avx           ;;
3557                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3558                     btver1)                    echo -xarch=amdsse4a      ;;
3559                     btver2|bdver*)             echo -xarch=avx           ;;
3560                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3561                     k8|opteron|athlon64|athlon-fx)
3562                                                echo -xarch=sse2a         ;;
3563                     athlon*)                   echo -xarch=pentium_proa  ;;
3564                 esac
3565                 ;;
3566             -std=c99)             echo -xc99              ;;
3567             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3568             -fPIC)                echo -KPIC -xcode=pic32 ;;
3569             -W*,*)                echo $flag              ;;
3570             -f*-*|-W*|-mimpure-text)                      ;;
3571             -shared)              echo -G                 ;;
3572             *)                    echo $flag              ;;
3573         esac
3574     done
3575 }
3576
3577 tms470_flags(){
3578     for flag; do
3579         case $flag in
3580             -march=*|-mcpu=*)
3581                 case "${flag#*=}" in
3582                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3583                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3584                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3585                     armv6*|arm11*)          echo -mv=6   ;;
3586                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3587                                             echo -mv=5e  ;;
3588                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3589                 esac
3590                 ;;
3591             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3592             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3593             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3594             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3595             -msoft-float)   echo --float_support=vfplib       ;;
3596             -O[0-3]|-mf=*)  echo $flag                        ;;
3597             -g)             echo -g -mn                       ;;
3598             -pds=*)         echo $flag                        ;;
3599             -D*|-I*)        echo $flag                        ;;
3600             --gcc|--abi=*)  echo $flag                        ;;
3601             -me)            echo $flag                        ;;
3602         esac
3603     done
3604 }
3605
3606 probe_cc(){
3607     pfx=$1
3608     _cc=$2
3609     first=$3
3610
3611     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3612     unset _ld_o _ldflags _ld_lib _ld_path
3613     unset _depflags _DEPCMD _DEPFLAGS
3614     _flags_filter=echo
3615
3616     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3617         true # no-op to avoid reading stdin in following checks
3618     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3619         _type=llvm_gcc
3620         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3621         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3622         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3623         _cflags_speed='-O3'
3624         _cflags_size='-Os'
3625     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3626         _type=gcc
3627         gcc_version=$($_cc --version | head -n1)
3628         gcc_basever=$($_cc -dumpversion)
3629         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3630         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3631         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3632         case $gcc_basever in
3633             2*) ;;
3634             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3635         esac
3636         if [ "$first" = true ]; then
3637             case $gcc_basever in
3638                 4.2*)
3639                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3640             esac
3641         fi
3642         _cflags_speed='-O3'
3643         _cflags_size='-Os'
3644     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3645         _type=icc
3646         _ident=$($_cc --version | head -n1)
3647         _depflags='-MMD'
3648         _cflags_speed='-O3'
3649         _cflags_size='-Os'
3650         _cflags_noopt='-O1'
3651         _flags_filter=icc_flags
3652     elif $_cc -v 2>&1 | grep -q xlc; then
3653         _type=xlc
3654         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3655         _cflags_speed='-O5'
3656         _cflags_size='-O5 -qcompact'
3657     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3658         _type=ccc
3659         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3660         _DEPFLAGS='-M'
3661         _cflags_speed='-fast'
3662         _cflags_size='-O1'
3663         _flags_filter=ccc_flags
3664     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3665         test -d "$sysroot" || die "No valid sysroot specified."
3666         _type=armcc
3667         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3668         armcc_conf="$PWD/armcc.conf"
3669         $_cc --arm_linux_configure                 \
3670              --arm_linux_config_file="$armcc_conf" \
3671              --configure_sysroot="$sysroot"        \
3672              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3673              die "Error creating armcc configuration file."
3674         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3675         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3676         as_default="${cross_prefix}gcc"
3677         _depflags='-MMD'
3678         _cflags_speed='-O3'
3679         _cflags_size='-Os'
3680     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3681         _type=tms470
3682         _ident=$($_cc -version | head -n1 | tr -s ' ')
3683         _flags='--gcc --abi=eabi -me'
3684         _cc_e='-ppl -fe=$@'
3685         _cc_o='-fe=$@'
3686         _depflags='-ppa -ppd=$(@:.o=.d)'
3687         _cflags_speed='-O3 -mf=5'
3688         _cflags_size='-O3 -mf=2'
3689         _flags_filter=tms470_flags
3690     elif $_cc -v 2>&1 | grep -q clang; then
3691         _type=clang
3692         _ident=$($_cc --version 2>/dev/null | head -n1)
3693         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3694         _cflags_speed='-O3'
3695         _cflags_size='-Os'
3696     elif $_cc -V 2>&1 | grep -q Sun; then
3697         _type=suncc
3698         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3699         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3700         _DEPFLAGS='-xM1 -xc99'
3701         _ldflags='-std=c99'
3702         _cflags_speed='-O5'
3703         _cflags_size='-O5 -xspace'
3704         _flags_filter=suncc_flags
3705     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3706         _type=pathscale
3707         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3708         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3709         _cflags_speed='-O2'
3710         _cflags_size='-Os'
3711         _flags_filter='filter_out -Wdisabled-optimization'
3712     elif $_cc -v 2>&1 | grep -q Open64; then
3713         _type=open64
3714         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3715         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3716         _cflags_speed='-O2'
3717         _cflags_size='-Os'
3718         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3719     elif $_cc -V 2>&1 | grep -q Portland; then
3720         _type=pgi
3721         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3722         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3723         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3724         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3725         _cflags_noopt="-O"
3726         _flags_filter=pgi_flags
3727     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3728         _type=armasm
3729         _ident=$($_cc | head -n1)
3730         # 4509: "This form of conditional instruction is deprecated"
3731         _flags="-nologo -ignore 4509"
3732         _flags_filter=armasm_flags
3733     elif $_cc 2>&1 | grep -q Intel; then
3734         _type=icl
3735         _ident=$($_cc 2>&1 | head -n1)
3736         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3737         # Not only is O3 broken on 13.x+ but it is slower on all previous
3738         # versions (tested) as well.
3739         _cflags_speed="-O2"
3740         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3741         if $_cc 2>&1 | grep -q Linker; then
3742             _ld_o='-out:$@'
3743         else
3744             _ld_o='-Fe$@'
3745         fi
3746         _cc_o='-Fo$@'
3747         _cc_e='-P'
3748         _flags_filter=icl_flags
3749         _ld_lib='lib%.a'
3750         _ld_path='-libpath:'
3751         # -Qdiag-error to make icl error when seeing certain unknown arguments
3752         _flags='-nologo -Qdiag-error:4044,10157'
3753         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3754         # with MSVC which enables it by default.
3755         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3756         disable stripping
3757     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3758         _type=msvc
3759         _ident=$($_cc 2>&1 | head -n1)
3760         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3761         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3762         _cflags_speed="-O2"