Merge commit '45235ac488363e3360bf2f2275102d1ec66eba0f'
[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   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-ffmpeg         disable ffmpeg build
109   --disable-ffplay         disable ffplay build
110   --disable-ffprobe        disable ffprobe build
111   --disable-ffserver       disable ffserver build
112
113 Documentation options:
114   --disable-doc            do not build documentation
115   --disable-htmlpages      do not build HTML documentation pages
116   --disable-manpages       do not build man documentation pages
117   --disable-podpages       do not build POD documentation pages
118   --disable-txtpages       do not build text documentation pages
119
120 Component options:
121   --disable-avdevice       disable libavdevice build
122   --disable-avcodec        disable libavcodec build
123   --disable-avformat       disable libavformat build
124   --disable-avutil         disable libavutil build
125   --disable-swresample     disable libswresample build
126   --disable-swscale        disable libswscale build
127   --disable-postproc       disable libpostproc build
128   --disable-avfilter       disable libavfilter build
129   --enable-avresample      enable libavresample build [no]
130   --disable-pthreads       disable pthreads [auto]
131   --disable-w32threads     disable Win32 threads [auto]
132   --disable-os2threads     disable OS/2 threads [auto]
133   --disable-network        disable network support [no]
134   --disable-dct            disable DCT code
135   --disable-dwt            disable DWT code
136   --disable-lsp            disable LSP code
137   --disable-lzo            disable LZO decoder code
138   --disable-mdct           disable MDCT code
139   --disable-rdft           disable RDFT code
140   --disable-fft            disable FFT code
141
142 Hardware accelerators:
143   --enable-dxva2           enable DXVA2 code
144   --enable-vaapi           enable VAAPI code
145   --enable-vda             enable VDA code
146   --enable-vdpau           enable VDPAU code
147
148 Individual component options:
149   --disable-everything     disable all components listed below
150   --disable-encoder=NAME   disable encoder NAME
151   --enable-encoder=NAME    enable encoder NAME
152   --disable-encoders       disable all encoders
153   --disable-decoder=NAME   disable decoder NAME
154   --enable-decoder=NAME    enable decoder NAME
155   --disable-decoders       disable all decoders
156   --disable-hwaccel=NAME   disable hwaccel NAME
157   --enable-hwaccel=NAME    enable hwaccel NAME
158   --disable-hwaccels       disable all hwaccels
159   --disable-muxer=NAME     disable muxer NAME
160   --enable-muxer=NAME      enable muxer NAME
161   --disable-muxers         disable all muxers
162   --disable-demuxer=NAME   disable demuxer NAME
163   --enable-demuxer=NAME    enable demuxer NAME
164   --disable-demuxers       disable all demuxers
165   --enable-parser=NAME     enable parser NAME
166   --disable-parser=NAME    disable parser NAME
167   --disable-parsers        disable all parsers
168   --enable-bsf=NAME        enable bitstream filter NAME
169   --disable-bsf=NAME       disable bitstream filter NAME
170   --disable-bsfs           disable all bitstream filters
171   --enable-protocol=NAME   enable protocol NAME
172   --disable-protocol=NAME  disable protocol NAME
173   --disable-protocols      disable all protocols
174   --enable-indev=NAME      enable input device NAME
175   --disable-indev=NAME     disable input device NAME
176   --disable-indevs         disable input devices
177   --enable-outdev=NAME     enable output device NAME
178   --disable-outdev=NAME    disable output device NAME
179   --disable-outdevs        disable output devices
180   --disable-devices        disable all devices
181   --enable-filter=NAME     enable filter NAME
182   --disable-filter=NAME    disable filter NAME
183   --disable-filters        disable all filters
184
185 External library support:
186   --enable-avisynth        enable reading of AVISynth script files [no]
187   --enable-bzlib           enable bzlib [autodetect]
188   --enable-fontconfig      enable fontconfig
189   --enable-frei0r          enable frei0r video filtering
190   --enable-gnutls          enable gnutls [no]
191   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
192   --enable-libass          enable libass subtitles rendering [no]
193   --enable-libbluray       enable BluRay reading using libbluray [no]
194   --enable-libcaca         enable textual display using libcaca
195   --enable-libcelt         enable CELT decoding via libcelt [no]
196   --enable-libcdio         enable audio CD grabbing with libcdio
197   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
198                            and libraw1394 [no]
199   --enable-libfaac         enable AAC encoding via libfaac [no]
200   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
201   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
202   --enable-libfreetype     enable libfreetype [no]
203   --enable-libgsm          enable GSM de/encoding via libgsm [no]
204   --enable-libiec61883     enable iec61883 via libiec61883 [no]
205   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
206   --enable-libmodplug      enable ModPlug via libmodplug [no]
207   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
208   --enable-libnut          enable NUT (de)muxing via libnut,
209                            native (de)muxer exists [no]
210   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
211   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
212   --enable-libopencv       enable video filtering via libopencv [no]
213   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
214   --enable-libopus         enable Opus decoding via libopus [no]
215   --enable-libpulse        enable Pulseaudio input via libpulse [no]
216   --enable-librtmp         enable RTMP[E] support via librtmp [no]
217   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
218   --enable-libsoxr         enable Include libsoxr resampling [no]
219   --enable-libspeex        enable Speex de/encoding via libspeex [no]
220   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
221   --enable-libtheora       enable Theora encoding via libtheora [no]
222   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
223   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
224   --enable-libv4l2         enable libv4l2/v4l-utils [no]
225   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
226   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
227   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
228                            native implementation exists [no]
229   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
230   --enable-libx264         enable H.264 encoding via x264 [no]
231   --enable-libxavs         enable AVS encoding via xavs [no]
232   --enable-libxvid         enable Xvid encoding via xvidcore,
233                            native MPEG-4/Xvid encoder exists [no]
234   --enable-openal          enable OpenAL 1.1 capture support [no]
235   --enable-openssl         enable openssl [no]
236   --enable-x11grab         enable X11 grabbing [no]
237   --enable-zlib            enable zlib [autodetect]
238
239 Advanced options (experts only):
240   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
241   --enable-cross-compile   assume a cross-compiler is used
242   --sysroot=PATH           root of cross-build tree
243   --sysinclude=PATH        location of cross-build system headers
244   --target-os=OS           compiler targets OS [$target_os]
245   --target-exec=CMD        command to run executables on target
246   --target-path=DIR        path to view of build directory on target
247   --toolchain=NAME         set tool defaults according to NAME
248   --nm=NM                  use nm tool NM [$nm_default]
249   --ar=AR                  use archive tool AR [$ar_default]
250   --as=AS                  use assembler AS [$as_default]
251   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
252   --cc=CC                  use C compiler CC [$cc_default]
253   --cxx=CXX                use C compiler CXX [$cxx_default]
254   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
255   --ld=LD                  use linker LD [$ld_default]
256   --host-cc=HOSTCC         use host C compiler HOSTCC
257   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
258   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
259   --host-ld=HOSTLD         use host linker HOSTLD
260   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
261   --host-libs=HLIBS        use libs HLIBS when linking for host
262   --host-os=OS             compiler host OS [$target_os]
263   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
264   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
265   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
266   --extra-libs=ELIBS       add ELIBS [$ELIBS]
267   --extra-version=STRING   version string suffix []
268   --optflags=OPTFLAGS      override optimization-related compiler flags
269   --build-suffix=SUFFIX    library name suffix []
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --progs-suffix=SUFFIX    program name suffix []
272   --arch=ARCH              select architecture [$arch]
273   --cpu=CPU                select the minimum required CPU (affects
274                            instruction selection, may crash on older CPUs)
275   --enable-pic             build position-independent code
276   --enable-sram            allow use of on-chip SRAM
277   --enable-thumb           compile for Thumb instruction set
278   --disable-symver         disable symbol versioning
279   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
280   --disable-safe-bitstream-reader
281                            disable buffer boundary checking in bitreaders
282                            (faster, but may crash)
283   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
284   --enable-lto             use link-time optimization
285
286 Optimization options (experts only):
287   --disable-asm            disable all assembler optimizations
288   --disable-altivec        disable AltiVec optimizations
289   --disable-amd3dnow       disable 3DNow! optimizations
290   --disable-amd3dnowext    disable 3DNow! extended optimizations
291   --disable-mmx            disable MMX optimizations
292   --disable-mmxext         disable MMXEXT optimizations
293   --disable-sse            disable SSE optimizations
294   --disable-sse2           disable SSE2 optimizations
295   --disable-sse3           disable SSE3 optimizations
296   --disable-ssse3          disable SSSE3 optimizations
297   --disable-sse4           disable SSE4 optimizations
298   --disable-sse42          disable SSE4.2 optimizations
299   --disable-avx            disable AVX optimizations
300   --disable-fma4           disable FMA4 optimizations
301   --disable-armv5te        disable armv5te optimizations
302   --disable-armv6          disable armv6 optimizations
303   --disable-armv6t2        disable armv6t2 optimizations
304   --disable-vfp            disable VFP optimizations
305   --disable-neon           disable NEON optimizations
306   --disable-vis            disable VIS optimizations
307   --disable-inline-asm     disable use of inline assembler
308   --disable-yasm           disable use of yasm assembler
309   --disable-mips32r2       disable MIPS32R2 optimizations
310   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
311   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
312   --disable-mipsfpu        disable floating point MIPS optimizations
313   --disable-fast-unaligned consider unaligned accesses slow
314
315 Developer options (useful when working on FFmpeg itself):
316   --enable-coverage        build with test coverage instrumentation
317   --disable-debug          disable debugging symbols
318   --enable-debug=LEVEL     set the debug level [$debuglevel]
319   --disable-optimizations  disable compiler optimizations
320   --enable-extra-warnings  enable more compiler warnings
321   --disable-stripping      disable stripping of executables and shared libraries
322   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
323                            2 causes a slowdown at runtime.
324   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
325   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
326                            leaks and errors, using the specified valgrind binary.
327                            Cannot be combined with --target-exec
328   --enable-ftrapv          Trap arithmetic overflows
329   --samples=PATH           location of test samples for FATE, if not set use
330                            \$FATE_SAMPLES at make invocation time.
331   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
332                            should be used only for debugging purposes)
333   --enable-random          randomly enable/disable components
334   --disable-random
335   --enable-random=LIST     randomly enable/disable specific components or
336   --disable-random=LIST    component groups. LIST is a comma-separated list
337                            of NAME[:PROB] entries where NAME is a component
338                            (group) and PROB the probability associated with
339                            NAME (default 0.5).
340   --random-seed=VALUE      seed value for --enable/disable-random
341
342 NOTE: Object files are built at the place where configure is launched.
343 EOF
344   exit 0
345 }
346
347 quotes='""'
348
349 log(){
350     echo "$@" >> $logfile
351 }
352
353 log_file(){
354     log BEGIN $1
355     pr -n -t $1 >> $logfile
356     log END $1
357 }
358
359 echolog(){
360     log "$@"
361     echo "$@"
362 }
363
364 warn(){
365     log "WARNING: $*"
366     WARNINGS="${WARNINGS}WARNING: $*\n"
367 }
368
369 die(){
370     echolog "$@"
371     cat <<EOF
372
373 If you think configure made a mistake, make sure you are using the latest
374 version from Git.  If the latest version fails, report the problem to the
375 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
376 EOF
377     if disabled logging; then
378         cat <<EOF
379 Rerun configure with logging enabled (do not use --disable-logging), and
380 include the log this produces with your report.
381 EOF
382     else
383         cat <<EOF
384 Include the log file "$logfile" produced by configure as this will help
385 solving the problem.
386 EOF
387     fi
388     exit 1
389 }
390
391 # Avoid locale weirdness, besides we really just want to translate ASCII.
392 toupper(){
393     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
394 }
395
396 tolower(){
397     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
398 }
399
400 c_escape(){
401     echo "$*" | sed 's/["\\]/\\\0/g'
402 }
403
404 sh_quote(){
405     v=$(echo "$1" | sed "s/'/'\\\\''/g")
406     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
407     echo "$v"
408 }
409
410 cleanws(){
411     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
412 }
413
414 filter(){
415     pat=$1
416     shift
417     for v; do
418         eval "case $v in $pat) echo $v ;; esac"
419     done
420 }
421
422 filter_out(){
423     pat=$1
424     shift
425     for v; do
426         eval "case $v in $pat) ;; *) echo $v ;; esac"
427     done
428 }
429
430 map(){
431     m=$1
432     shift
433     for v; do eval $m; done
434 }
435
436 add_suffix(){
437     suffix=$1
438     shift
439     for v; do echo ${v}${suffix}; done
440 }
441
442 set_all(){
443     value=$1
444     shift
445     for var in $*; do
446         eval $var=$value
447     done
448 }
449
450 set_weak(){
451     value=$1
452     shift
453     for var; do
454         eval : \${$var:=$value}
455     done
456 }
457
458 set_safe(){
459     var=$1
460     shift
461     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
462 }
463
464 get_safe(){
465     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
466 }
467
468 pushvar(){
469     for var in $*; do
470         eval level=\${${var}_level:=0}
471         eval ${var}_${level}="\$$var"
472         eval ${var}_level=$(($level+1))
473     done
474 }
475
476 popvar(){
477     for var in $*; do
478         eval level=\${${var}_level:-0}
479         test $level = 0 && continue
480         eval level=$(($level-1))
481         eval $var="\${${var}_${level}}"
482         eval ${var}_level=$level
483         eval unset ${var}_${level}
484     done
485 }
486
487 enable(){
488     set_all yes $*
489 }
490
491 disable(){
492     set_all no $*
493 }
494
495 enable_weak(){
496     set_weak yes $*
497 }
498
499 disable_weak(){
500     set_weak no $*
501 }
502
503 enable_safe(){
504     for var; do
505         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
506     done
507 }
508
509 disable_safe(){
510     for var; do
511         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
512     done
513 }
514
515 do_enable_deep(){
516     for var; do
517         enabled $var && continue
518         eval sel="\$${var}_select"
519         eval sgs="\$${var}_suggest"
520         pushvar var sgs
521         enable_deep $sel
522         popvar sgs
523         enable_deep_weak $sgs
524         popvar var
525     done
526 }
527
528 enable_deep(){
529     do_enable_deep $*
530     enable $*
531 }
532
533 enable_deep_weak(){
534     do_enable_deep $*
535     enable_weak $*
536 }
537
538 enabled(){
539     test "${1#!}" = "$1" && op== || op=!=
540     eval test "x\$${1#!}" $op "xyes"
541 }
542
543 disabled(){
544     test "${1#!}" = "$1" && op== || op=!=
545     eval test "x\$${1#!}" $op "xno"
546 }
547
548 enabled_all(){
549     for opt; do
550         enabled $opt || return 1
551     done
552 }
553
554 disabled_all(){
555     for opt; do
556         disabled $opt || return 1
557     done
558 }
559
560 enabled_any(){
561     for opt; do
562         enabled $opt && return 0
563     done
564 }
565
566 disabled_any(){
567     for opt; do
568         disabled $opt && return 0
569     done
570     return 1
571 }
572
573 set_default(){
574     for opt; do
575         eval : \${$opt:=\$${opt}_default}
576     done
577 }
578
579 is_in(){
580     value=$1
581     shift
582     for var in $*; do
583         [ $var = $value ] && return 0
584     done
585     return 1
586 }
587
588 do_check_deps(){
589     for cfg; do
590         cfg="${cfg#!}"
591         enabled ${cfg}_checking && die "Circular dependency for $cfg."
592         disabled ${cfg}_checking && continue
593         enable ${cfg}_checking
594         append allopts $cfg
595
596         eval dep_all="\$${cfg}_deps"
597         eval dep_any="\$${cfg}_deps_any"
598         eval dep_sel="\$${cfg}_select"
599         eval dep_sgs="\$${cfg}_suggest"
600         eval dep_ifa="\$${cfg}_if"
601         eval dep_ifn="\$${cfg}_if_any"
602
603         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
604         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
605         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
606
607         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
608         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
609         enabled_all  $dep_all || disable $cfg
610         enabled_any  $dep_any || disable $cfg
611         disabled_any $dep_sel && disable $cfg
612
613         if enabled $cfg; then
614             enable_deep $dep_sel
615             enable_deep_weak $dep_sgs
616         fi
617
618         disable ${cfg}_checking
619     done
620 }
621
622 check_deps(){
623     unset allopts
624
625     do_check_deps "$@"
626
627     for cfg in $allopts; do
628         enabled $cfg || continue
629         eval dep_extralibs="\$${cfg}_extralibs"
630         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
631     done
632 }
633
634 print_config(){
635     pfx=$1
636     files=$2
637     shift 2
638     map 'eval echo "$v \${$v:-no}"' "$@" |
639     awk "BEGIN { split(\"$files\", files) }
640         {
641             c = \"$pfx\" toupper(\$1);
642             v = \$2;
643             sub(/yes/, 1, v);
644             sub(/no/,  0, v);
645             for (f in files) {
646                 file = files[f];
647                 if (file ~ /\\.h\$/) {
648                     printf(\"#define %s %d\\n\", c, v) >>file;
649                 } else if (file ~ /\\.asm\$/) {
650                     printf(\"%%define %s %d\\n\", c, v) >>file;
651                 } else if (file ~ /\\.mak\$/) {
652                     n = -v ? \"\" : \"!\";
653                     printf(\"%s%s=yes\\n\", n, c) >>file;
654                 }
655             }
656         }"
657 }
658
659 print_enabled(){
660     suf=$1
661     shift
662     for v; do
663         enabled $v && printf "%s\n" ${v%$suf};
664     done
665 }
666
667 append(){
668     var=$1
669     shift
670     eval "$var=\"\$$var $*\""
671 }
672
673 prepend(){
674     var=$1
675     shift
676     eval "$var=\"$* \$$var\""
677 }
678
679 add_cppflags(){
680     append CPPFLAGS "$@"
681 }
682
683 add_cflags(){
684     append CFLAGS $($cflags_filter "$@")
685 }
686
687 add_cxxflags(){
688     append CXXFLAGS $($cflags_filter "$@")
689 }
690
691 add_asflags(){
692     append ASFLAGS $($asflags_filter "$@")
693 }
694
695 add_ldflags(){
696     append LDFLAGS $($ldflags_filter "$@")
697 }
698
699 add_extralibs(){
700     prepend extralibs $($ldflags_filter "$@")
701 }
702
703 add_host_cppflags(){
704     append host_cppflags "$@"
705 }
706
707 add_host_cflags(){
708     append host_cflags $($host_cflags_filter "$@")
709 }
710
711 add_host_ldflags(){
712     append host_ldflags $($host_ldflags_filter "$@")
713 }
714
715 add_compat(){
716     append compat_objs $1
717     shift
718     map 'add_cppflags -D$v' "$@"
719 }
720
721 check_cmd(){
722     log "$@"
723     "$@" >> $logfile 2>&1
724 }
725
726 cc_o(){
727     eval printf '%s\\n' $CC_O
728 }
729
730 cc_e(){
731     eval printf '%s\\n' $CC_E
732 }
733
734 check_cc(){
735     log check_cc "$@"
736     cat > $TMPC
737     log_file $TMPC
738     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
739 }
740
741 check_cxx(){
742     log check_cxx "$@"
743     cat > $TMPCPP
744     log_file $TMPCPP
745     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
746 }
747
748 check_cpp(){
749     log check_cpp "$@"
750     cat > $TMPC
751     log_file $TMPC
752     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
753 }
754
755 as_o(){
756     eval printf '%s\\n' $AS_O
757 }
758
759 check_as(){
760     log check_as "$@"
761     cat > $TMPS
762     log_file $TMPS
763     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
764 }
765
766 check_inline_asm(){
767     log check_inline_asm "$@"
768     name="$1"
769     code="$2"
770     shift 2
771     disable $name
772     check_cc "$@" <<EOF && enable $name
773 void foo(void){ __asm__ volatile($code); }
774 EOF
775 }
776
777 check_insn(){
778     log check_insn "$@"
779     check_inline_asm ${1}_inline "\"$2\""
780     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
781 }
782
783 check_yasm(){
784     log check_yasm "$@"
785     echo "$1" > $TMPS
786     log_file $TMPS
787     shift 1
788     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
789 }
790
791 ld_o(){
792     eval printf '%s\\n' $LD_O
793 }
794
795 check_ld(){
796     log check_ld "$@"
797     type=$1
798     shift 1
799     flags=$(filter_out '-l*|*.so' $@)
800     libs=$(filter '-l*|*.so' $@)
801     check_$type $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 check_code(){
808     log check_code "$@"
809     check=$1
810     headers=$2
811     code=$3
812     shift 3
813     {
814         for hdr in $headers; do
815             echo "#include <$hdr>"
816         done
817         echo "int main(void) { $code; return 0; }"
818     } | check_$check "$@"
819 }
820
821 check_cppflags(){
822     log check_cppflags "$@"
823     check_cc "$@" <<EOF && append CPPFLAGS "$@"
824 int x;
825 EOF
826 }
827
828 check_cflags(){
829     log check_cflags "$@"
830     set -- $($cflags_filter "$@")
831     check_cc "$@" <<EOF && append CFLAGS "$@"
832 int x;
833 EOF
834 }
835
836 check_cxxflags(){
837     log check_cxxflags "$@"
838     set -- $($cflags_filter "$@")
839     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
840 int x;
841 EOF
842 }
843
844 test_ldflags(){
845     log test_ldflags "$@"
846     check_ld "cc" "$@" <<EOF
847 int main(void){ return 0; }
848 EOF
849 }
850
851 check_ldflags(){
852     log check_ldflags "$@"
853     test_ldflags "$@" && add_ldflags "$@"
854 }
855
856 check_header(){
857     log check_header "$@"
858     header=$1
859     shift
860     disable_safe $header
861     check_cpp "$@" <<EOF && enable_safe $header
862 #include <$header>
863 int x;
864 EOF
865 }
866
867 check_func(){
868     log check_func "$@"
869     func=$1
870     shift
871     disable $func
872     check_ld "cc" "$@" <<EOF && enable $func
873 extern int $func();
874 int main(void){ $func(); }
875 EOF
876 }
877
878 check_mathfunc(){
879     log check_mathfunc "$@"
880     func=$1
881     narg=$2
882     shift 2
883     test $narg = 2 && args="f, g" || args="f"
884     disable $func
885     check_ld "cc" "$@" <<EOF && enable $func
886 #include <math.h>
887 float foo(float f, float g) { return $func($args); }
888 int main(void){ return (int) foo; }
889 EOF
890 }
891
892 check_func_headers(){
893     log check_func_headers "$@"
894     headers=$1
895     funcs=$2
896     shift 2
897     {
898         for hdr in $headers; do
899             echo "#include <$hdr>"
900         done
901         for func in $funcs; do
902             echo "long check_$func(void) { return (long) $func; }"
903         done
904         echo "int main(void) { return 0; }"
905     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
906 }
907
908 check_class_headers_cpp(){
909     log check_class_headers_cpp "$@"
910     headers=$1
911     classes=$2
912     shift 2
913     {
914         for hdr in $headers; do
915             echo "#include <$hdr>"
916         done
917         echo "int main(void) { "
918         i=1
919         for class in $classes; do
920             echo "$class obj$i;"
921             i=$(expr $i + 1)
922         done
923         echo "return 0; }"
924     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
925 }
926
927 check_cpp_condition(){
928     log check_cpp_condition "$@"
929     header=$1
930     condition=$2
931     shift 2
932     check_cpp "$@" <<EOF
933 #include <$header>
934 #if !($condition)
935 #error "unsatisfied condition: $condition"
936 #endif
937 EOF
938 }
939
940 check_lib(){
941     log check_lib "$@"
942     header="$1"
943     func="$2"
944     shift 2
945     check_header $header && check_func $func "$@" && add_extralibs "$@"
946 }
947
948 check_lib2(){
949     log check_lib2 "$@"
950     headers="$1"
951     funcs="$2"
952     shift 2
953     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
954 }
955
956 check_lib_cpp(){
957     log check_lib_cpp "$@"
958     headers="$1"
959     classes="$2"
960     shift 2
961     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
962 }
963
964 check_pkg_config(){
965     log check_pkg_config "$@"
966     pkg="$1"
967     headers="$2"
968     funcs="$3"
969     shift 3
970     $pkg_config --exists $pkg 2>/dev/null || return
971     pkg_cflags=$($pkg_config --cflags $pkg)
972     pkg_libs=$($pkg_config --libs $pkg)
973     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
974         set_safe ${pkg}_cflags $pkg_cflags   &&
975         set_safe ${pkg}_libs   $pkg_libs
976 }
977
978 check_exec(){
979     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
980 }
981
982 check_exec_crash(){
983     code=$(cat)
984
985     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
986     # are safe but may not be available everywhere.  Thus we use
987     # raise(SIGTERM) instead.  The check is run in a subshell so we
988     # can redirect the "Terminated" message from the shell.  SIGBUS
989     # is not defined by standard C so it is used conditionally.
990
991     (check_exec "$@") >> $logfile 2>&1 <<EOF
992 #include <signal.h>
993 static void sighandler(int sig){
994     raise(SIGTERM);
995 }
996 int func(void){
997     $code
998 }
999 int (*func_ptr)(void) = func;
1000 int main(void){
1001     signal(SIGILL, sighandler);
1002     signal(SIGFPE, sighandler);
1003     signal(SIGSEGV, sighandler);
1004 #ifdef SIGBUS
1005     signal(SIGBUS, sighandler);
1006 #endif
1007     return func_ptr();
1008 }
1009 EOF
1010 }
1011
1012 check_type(){
1013     log check_type "$@"
1014     headers=$1
1015     type=$2
1016     shift 2
1017     disable_safe "$type"
1018     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1019 }
1020
1021 check_struct(){
1022     log check_type "$@"
1023     headers=$1
1024     struct=$2
1025     member=$3
1026     shift 3
1027     disable_safe "${struct}_${member}"
1028     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1029         enable_safe "${struct}_${member}"
1030 }
1031
1032 require(){
1033     name="$1"
1034     header="$2"
1035     func="$3"
1036     shift 3
1037     check_lib $header $func "$@" || die "ERROR: $name not found"
1038 }
1039
1040 require2(){
1041     name="$1"
1042     headers="$2"
1043     func="$3"
1044     shift 3
1045     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1046 }
1047
1048 require_cpp(){
1049     name="$1"
1050     headers="$2"
1051     classes="$3"
1052     shift 3
1053     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1054 }
1055
1056 require_pkg_config(){
1057     pkg="$1"
1058     check_pkg_config "$@" || die "ERROR: $pkg not found"
1059     add_cflags    $(get_safe ${pkg}_cflags)
1060     add_extralibs $(get_safe ${pkg}_libs)
1061 }
1062
1063 hostcc_o(){
1064     eval printf '%s\\n' $HOSTCC_O
1065 }
1066
1067 check_host_cc(){
1068     log check_host_cc "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1072 }
1073
1074 check_host_cppflags(){
1075     log check_host_cppflags "$@"
1076     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1077 int x;
1078 EOF
1079 }
1080
1081 check_host_cflags(){
1082     log check_host_cflags "$@"
1083     set -- $($host_cflags_filter "$@")
1084     check_host_cc "$@" <<EOF && append host_cflags "$@"
1085 int x;
1086 EOF
1087 }
1088
1089 apply(){
1090     file=$1
1091     shift
1092     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1093 }
1094
1095 cp_if_changed(){
1096     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1097     mkdir -p "$(dirname $2)"
1098     $cp_f "$1" "$2"
1099 }
1100
1101 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1102 # system-dependent things.
1103
1104 COMPONENT_LIST="
1105     bsfs
1106     decoders
1107     demuxers
1108     encoders
1109     filters
1110     hwaccels
1111     indevs
1112     muxers
1113     outdevs
1114     parsers
1115     protocols
1116 "
1117
1118 DOCUMENT_LIST="
1119     doc
1120     htmlpages
1121     manpages
1122     podpages
1123     txtpages
1124 "
1125
1126 HWACCEL_LIST="
1127     dxva2
1128     vaapi
1129     vda
1130     vdpau
1131 "
1132
1133 LIBRARY_LIST="
1134     avcodec
1135     avdevice
1136     avfilter
1137     avformat
1138     avresample
1139     avutil
1140     postproc
1141     swresample
1142     swscale
1143 "
1144
1145 PROGRAM_LIST="
1146     ffplay
1147     ffprobe
1148     ffserver
1149     ffmpeg
1150 "
1151
1152 CONFIG_LIST="
1153     $COMPONENT_LIST
1154     $DOCUMENT_LIST
1155     $HWACCEL_LIST
1156     $LIBRARY_LIST
1157     $PROGRAM_LIST
1158     avisynth
1159     bzlib
1160     crystalhd
1161     dct
1162     dwt
1163     fast_unaligned
1164     fft
1165     fontconfig
1166     frei0r
1167     ftrapv
1168     gnutls
1169     gpl
1170     gray
1171     hardcoded_tables
1172     incompatible_fork_abi
1173     libaacplus
1174     libass
1175     libbluray
1176     libcaca
1177     libcdio
1178     libcelt
1179     libdc1394
1180     libfaac
1181     libfdk_aac
1182     libflite
1183     libfreetype
1184     libgsm
1185     libiec61883
1186     libilbc
1187     libmodplug
1188     libmp3lame
1189     libnut
1190     libopencore_amrnb
1191     libopencore_amrwb
1192     libopencv
1193     libopenjpeg
1194     libopus
1195     libpulse
1196     librtmp
1197     libschroedinger
1198     libsoxr
1199     libspeex
1200     libstagefright_h264
1201     libtheora
1202     libtwolame
1203     libutvideo
1204     libv4l2
1205     libvo_aacenc
1206     libvo_amrwbenc
1207     libvorbis
1208     libvpx
1209     libx264
1210     libxavs
1211     libxvid
1212     lsp
1213     lzo
1214     mdct
1215     memalign_hack
1216     memory_poisoning
1217     network
1218     nonfree
1219     openal
1220     openssl
1221     pic
1222     rdft
1223     runtime_cpudetect
1224     safe_bitstream_reader
1225     shared
1226     small
1227     sram
1228     static
1229     swscale_alpha
1230     thumb
1231     version3
1232     xmm_clobber_test
1233     x11grab
1234     zlib
1235 "
1236
1237 THREADS_LIST='
1238     pthreads
1239     w32threads
1240     os2threads
1241 '
1242
1243 ARCH_LIST='
1244     aarch64
1245     alpha
1246     arm
1247     avr32
1248     avr32_ap
1249     avr32_uc
1250     bfin
1251     ia64
1252     m68k
1253     mips
1254     mips64
1255     parisc
1256     ppc
1257     ppc64
1258     s390
1259     sh4
1260     sparc
1261     sparc64
1262     tilegx
1263     tilepro
1264     tomi
1265     x86
1266     x86_32
1267     x86_64
1268 '
1269
1270 ARCH_EXT_LIST_ARM='
1271     armv5te
1272     armv6
1273     armv6t2
1274     neon
1275     vfp
1276     vfpv3
1277 '
1278
1279 ARCH_EXT_LIST_X86='
1280     amd3dnow
1281     amd3dnowext
1282     avx
1283     fma4
1284     mmx
1285     mmxext
1286     sse
1287     sse2
1288     sse3
1289     sse4
1290     sse42
1291     ssse3
1292 '
1293
1294 ARCH_EXT_LIST="
1295     $ARCH_EXT_LIST_ARM
1296     $ARCH_EXT_LIST_X86
1297     altivec
1298     ppc4xx
1299     vis
1300     mipsfpu
1301     mips32r2
1302     mipsdspr1
1303     mipsdspr2
1304 "
1305
1306 HAVE_LIST_CMDLINE='
1307     inline_asm
1308     symver
1309     yasm
1310 '
1311
1312 HAVE_LIST_PUB='
1313     bigendian
1314     fast_unaligned
1315     incompatible_fork_abi
1316 '
1317
1318 MATH_FUNCS="
1319     atanf
1320     atan2f
1321     cbrt
1322     cbrtf
1323     cosf
1324     exp2
1325     exp2f
1326     expf
1327     isinf
1328     isnan
1329     ldexpf
1330     llrint
1331     llrintf
1332     log2
1333     log2f
1334     log10f
1335     lrint
1336     lrintf
1337     powf
1338     rint
1339     round
1340     roundf
1341     sinf
1342     trunc
1343     truncf
1344 "
1345
1346 HAVE_LIST="
1347     $ARCH_EXT_LIST
1348     $(add_suffix _external $ARCH_EXT_LIST)
1349     $(add_suffix _inline   $ARCH_EXT_LIST)
1350     $HAVE_LIST_CMDLINE
1351     $HAVE_LIST_PUB
1352     $THREADS_LIST
1353     $MATH_FUNCS
1354     access
1355     aligned_malloc
1356     aligned_stack
1357     alsa_asoundlib_h
1358     altivec_h
1359     arpa_inet_h
1360     asm_mod_q
1361     asm_mod_y
1362     asm_types_h
1363     attribute_may_alias
1364     attribute_packed
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     clock_gettime
1368     closesocket
1369     cmov
1370     CommandLineToArgvW
1371     cpunop
1372     CryptGenRandom
1373     dcbzl
1374     dev_bktr_ioctl_bt848_h
1375     dev_bktr_ioctl_meteor_h
1376     dev_ic_bt8xx_h
1377     dev_video_bktr_ioctl_bt848_h
1378     dev_video_meteor_ioctl_meteor_h
1379     direct_h
1380     dlfcn_h
1381     dlopen
1382     dos_paths
1383     dxva_h
1384     ebp_available
1385     ebx_available
1386     fast_64bit
1387     fast_clz
1388     fast_cmov
1389     fcntl
1390     fork
1391     getaddrinfo
1392     gethrtime
1393     getopt
1394     GetProcessAffinityMask
1395     GetProcessMemoryInfo
1396     GetProcessTimes
1397     GetSystemTimeAsFileTime
1398     getrusage
1399     getservbyport
1400     gettimeofday
1401     glob
1402     gnu_as
1403     gsm_h
1404     ibm_asm
1405     iconv
1406     inet_aton
1407     io_h
1408     isatty
1409     jack_port_get_latency_range
1410     kbhit
1411     ldbrx
1412     libdc1394_1
1413     libdc1394_2
1414     local_aligned_16
1415     local_aligned_8
1416     localtime_r
1417     loongson
1418     lzo1x_999_compress
1419     machine_ioctl_bt848_h
1420     machine_ioctl_meteor_h
1421     makeinfo
1422     malloc_h
1423     MapViewOfFile
1424     memalign
1425     mkstemp
1426     mm_empty
1427     mmap
1428     mprotect
1429     msvcrt
1430     nanosleep
1431     openjpeg_1_5_openjpeg_h
1432     PeekNamedPipe
1433     perl
1434     pod2man
1435     poll_h
1436     posix_memalign
1437     pthread_cancel
1438     rdtsc
1439     rsync_contimeout
1440     sched_getaffinity
1441     sdl
1442     sdl_video_size
1443     SetConsoleTextAttribute
1444     setmode
1445     setrlimit
1446     Sleep
1447     sndio_h
1448     socklen_t
1449     soundcard_h
1450     strerror_r
1451     struct_addrinfo
1452     struct_group_source_req
1453     struct_ip_mreq_source
1454     struct_ipv6_mreq
1455     struct_pollfd
1456     struct_rusage_ru_maxrss
1457     struct_sctp_event_subscribe
1458     struct_sockaddr_in6
1459     struct_sockaddr_sa_len
1460     struct_sockaddr_storage
1461     struct_v4l2_frmivalenum_discrete
1462     symver_asm_label
1463     symver_gnu_asm
1464     sysconf
1465     sysctl
1466     sys_mman_h
1467     sys_param_h
1468     sys_resource_h
1469     sys_select_h
1470     sys_soundcard_h
1471     sys_time_h
1472     sys_videoio_h
1473     termios_h
1474     texi2html
1475     threads
1476     unistd_h
1477     usleep
1478     vfp_args
1479     VirtualAlloc
1480     windows_h
1481     winsock2_h
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 # options emitted with CONFIG_ prefix but not available on the command line
1487 CONFIG_EXTRA="
1488     aandcttables
1489     ac3dsp
1490     audio_frame_queue
1491     error_resilience
1492     gcrypt
1493     golomb
1494     gplv3
1495     h264chroma
1496     h264dsp
1497     h264pred
1498     h264qpel
1499     huffman
1500     lgplv3
1501     lpc
1502     mpegaudio
1503     mpegaudiodsp
1504     mpegvideo
1505     mpegvideoenc
1506     nettle
1507     rangecoder
1508     rtpdec
1509     rtpenc_chain
1510     sinewin
1511     videodsp
1512     vp3dsp
1513 "
1514
1515 CMDLINE_SELECT="
1516     $ARCH_EXT_LIST
1517     $CONFIG_LIST
1518     $HAVE_LIST_CMDLINE
1519     $THREADS_LIST
1520     asm
1521     coverage
1522     cross_compile
1523     debug
1524     extra_warnings
1525     logging
1526     lto
1527     optimizations
1528     stripping
1529 "
1530
1531 PATHS_LIST='
1532     bindir
1533     datadir
1534     incdir
1535     libdir
1536     mandir
1537     prefix
1538     shlibdir
1539 '
1540
1541 CMDLINE_SET="
1542     $PATHS_LIST
1543     ar
1544     arch
1545     as
1546     assert_level
1547     build_suffix
1548     cc
1549     cpu
1550     cross_prefix
1551     cxx
1552     dep_cc
1553     extra_version
1554     host_cc
1555     host_cflags
1556     host_ld
1557     host_ldflags
1558     host_libs
1559     host_os
1560     install
1561     ld
1562     logfile
1563     malloc_prefix
1564     nm
1565     optflags
1566     pkg_config
1567     progs_suffix
1568     random_seed
1569     samples
1570     strip
1571     sysinclude
1572     sysroot
1573     target_exec
1574     target_os
1575     target_path
1576     toolchain
1577     valgrind
1578     yasmexe
1579 "
1580
1581 CMDLINE_APPEND="
1582     extra_cflags
1583     extra_cxxflags
1584     host_cppflags
1585 "
1586
1587 # code dependency declarations
1588
1589 # architecture extensions
1590
1591 armv5te_deps="arm"
1592 armv6_deps="arm"
1593 armv6t2_deps="arm"
1594 neon_deps="arm"
1595 vfp_deps="arm"
1596 vfpv3_deps="vfp"
1597
1598 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1599
1600 mipsfpu_deps="mips"
1601 mips32r2_deps="mips"
1602 mipsdspr1_deps="mips"
1603 mipsdspr2_deps="mips"
1604
1605 altivec_deps="ppc"
1606 ppc4xx_deps="ppc"
1607
1608 vis_deps="sparc"
1609
1610 x86_64_suggest="cmov fast_cmov"
1611
1612 amd3dnow_deps="mmx"
1613 amd3dnowext_deps="amd3dnow"
1614 mmx_deps="x86"
1615 mmxext_deps="mmx"
1616 sse_deps="mmxext"
1617 sse2_deps="sse"
1618 sse3_deps="sse2"
1619 ssse3_deps="sse3"
1620 sse4_deps="ssse3"
1621 sse42_deps="sse4"
1622 avx_deps="sse42"
1623 fma4_deps="avx"
1624
1625 mmx_external_deps="yasm"
1626 mmx_inline_deps="inline_asm"
1627 mmx_suggest="mmx_external mmx_inline"
1628
1629 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1630     eval dep=\$${ext}_deps
1631     eval ${ext}_external_deps='"${dep}_external"'
1632     eval ${ext}_inline_deps='"${dep}_inline"'
1633     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1634 done
1635
1636 aligned_stack_if_any="ppc x86"
1637 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1638 fast_clz_if_any="alpha avr32 mips ppc x86"
1639 fast_unaligned_if_any="ppc x86"
1640
1641 inline_asm_deps="!tms470"
1642 need_memalign="altivec neon sse"
1643
1644 symver_if_any="symver_asm_label symver_gnu_asm"
1645
1646 log2_deps="!msvcrt"
1647
1648 # subsystems
1649 dct_select="rdft"
1650 mdct_select="fft"
1651 rdft_select="fft"
1652 mpegaudio_select="mpegaudiodsp"
1653 mpegaudiodsp_select="dct"
1654 mpegvideo_select="videodsp"
1655 mpegvideoenc_select="mpegvideo"
1656
1657 # decoders / encoders
1658 aac_decoder_select="mdct sinewin"
1659 aac_encoder_select="audio_frame_queue mdct sinewin"
1660 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1661 ac3_decoder_select="mdct ac3dsp ac3_parser"
1662 ac3_encoder_select="mdct ac3dsp"
1663 ac3_fixed_encoder_select="mdct ac3dsp"
1664 alac_encoder_select="lpc"
1665 amrnb_decoder_select="lsp"
1666 amrwb_decoder_select="lsp"
1667 amv_encoder_select="aandcttables"
1668 atrac1_decoder_select="mdct sinewin"
1669 atrac3_decoder_select="mdct"
1670 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1671 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1672 cavs_decoder_select="golomb mpegvideo"
1673 comfortnoise_encoder_select="lpc"
1674 cook_decoder_select="mdct sinewin"
1675 cscd_decoder_select="lzo"
1676 cscd_decoder_suggest="zlib"
1677 dca_decoder_select="mdct"
1678 dirac_decoder_select="dwt golomb videodsp"
1679 dnxhd_encoder_select="aandcttables mpegvideoenc"
1680 dxa_decoder_select="zlib"
1681 eac3_decoder_select="ac3_decoder"
1682 eac3_encoder_select="ac3_encoder"
1683 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1684 eatgq_decoder_select="aandcttables"
1685 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1686 exr_decoder_select="zlib"
1687 ffv1_decoder_select="golomb rangecoder"
1688 ffv1_encoder_select="rangecoder"
1689 ffvhuff_encoder_select="huffman"
1690 flac_decoder_select="golomb"
1691 flac_encoder_select="golomb lpc"
1692 flashsv_decoder_select="zlib"
1693 flashsv_encoder_select="zlib"
1694 flashsv2_encoder_select="zlib"
1695 flashsv2_decoder_select="zlib"
1696 flv_decoder_select="h263_decoder"
1697 flv_encoder_select="h263_encoder"
1698 fraps_decoder_select="huffman"
1699 h261_decoder_select="error_resilience mpegvideo"
1700 h261_encoder_select="aandcttables mpegvideoenc"
1701 h263_decoder_select="error_resilience h263_parser mpegvideo"
1702 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1703 h263i_decoder_select="h263_decoder"
1704 h263p_encoder_select="h263_encoder"
1705 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1706 huffyuv_encoder_select="huffman"
1707 iac_decoder_select="fft mdct sinewin"
1708 imc_decoder_select="fft mdct sinewin"
1709 jpegls_decoder_select="golomb"
1710 jpegls_encoder_select="golomb"
1711 ljpeg_encoder_select="aandcttables mpegvideoenc"
1712 loco_decoder_select="golomb"
1713 mdec_decoder_select="error_resilience mpegvideo"
1714 mjpeg_encoder_select="aandcttables mpegvideoenc"
1715 mlp_decoder_select="mlp_parser"
1716 mp1_decoder_select="mpegaudio"
1717 mp1float_decoder_select="mpegaudio"
1718 mp2_decoder_select="mpegaudio"
1719 mp2float_decoder_select="mpegaudio"
1720 mp3_decoder_select="mpegaudio"
1721 mp3adu_decoder_select="mpegaudio"
1722 mp3adufloat_decoder_select="mpegaudio"
1723 mp3float_decoder_select="mpegaudio"
1724 mp3on4_decoder_select="mpegaudio"
1725 mp3on4float_decoder_select="mpegaudio"
1726 mpc7_decoder_select="mpegaudiodsp"
1727 mpc8_decoder_select="mpegaudiodsp"
1728 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1729 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1730 mpeg1video_decoder_select="error_resilience mpegvideo"
1731 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1732 mpeg2video_decoder_select="error_resilience mpegvideo"
1733 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1734 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1735 mpeg4_encoder_select="h263_encoder"
1736 msmpeg4v1_decoder_select="h263_decoder"
1737 msmpeg4v1_encoder_select="h263_encoder"
1738 msmpeg4v2_decoder_select="h263_decoder"
1739 msmpeg4v2_encoder_select="h263_encoder"
1740 msmpeg4v3_decoder_select="h263_decoder"
1741 msmpeg4v3_encoder_select="h263_encoder"
1742 mss2_decoder_select="vc1_decoder"
1743 nellymoser_decoder_select="mdct sinewin"
1744 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1745 nuv_decoder_select="lzo"
1746 png_decoder_select="zlib"
1747 png_encoder_select="zlib"
1748 qcelp_decoder_select="lsp"
1749 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1750 ra_144_encoder_select="audio_frame_queue lpc"
1751 ralf_decoder_select="golomb"
1752 rv10_decoder_select="h263_decoder"
1753 rv10_encoder_select="h263_encoder"
1754 rv20_decoder_select="h263_decoder"
1755 rv20_encoder_select="h263_encoder"
1756 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1757 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1758 shorten_decoder_select="golomb"
1759 sipr_decoder_select="lsp"
1760 snow_decoder_select="dwt rangecoder"
1761 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1762 sonic_decoder_select="golomb"
1763 sonic_encoder_select="golomb"
1764 sonic_ls_encoder_select="golomb"
1765 svq1_decoder_select="error_resilience mpegvideo"
1766 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1767 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1768 svq3_decoder_suggest="zlib"
1769 theora_decoder_select="vp3_decoder"
1770 tiff_decoder_suggest="zlib"
1771 tiff_encoder_suggest="zlib"
1772 truehd_decoder_select="mlp_parser"
1773 tscc_decoder_select="zlib"
1774 twinvq_decoder_select="mdct lsp sinewin"
1775 utvideo_encoder_select="huffman"
1776 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1777 vc1image_decoder_select="vc1_decoder"
1778 vorbis_decoder_select="mdct"
1779 vorbis_encoder_select="mdct"
1780 vp3_decoder_select="vp3dsp videodsp"
1781 vp5_decoder_select="vp3dsp videodsp"
1782 vp6_decoder_select="huffman vp3dsp videodsp"
1783 vp6a_decoder_select="vp6_decoder"
1784 vp6f_decoder_select="vp6_decoder"
1785 vp8_decoder_select="h264pred videodsp"
1786 wmapro_decoder_select="mdct sinewin"
1787 wmav1_decoder_select="mdct sinewin"
1788 wmav1_encoder_select="mdct sinewin"
1789 wmav2_decoder_select="mdct sinewin"
1790 wmav2_encoder_select="mdct sinewin"
1791 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1792 wmv1_decoder_select="h263_decoder"
1793 wmv1_encoder_select="h263_encoder"
1794 wmv2_decoder_select="h263_decoder"
1795 wmv2_encoder_select="h263_encoder"
1796 wmv3_decoder_select="vc1_decoder"
1797 wmv3image_decoder_select="wmv3_decoder"
1798 zerocodec_decoder_select="zlib"
1799 zlib_decoder_select="zlib"
1800 zlib_encoder_select="zlib"
1801 zmbv_decoder_select="zlib"
1802 zmbv_encoder_select="zlib"
1803
1804 # hardware accelerators
1805 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1806 dxva2_deps="dxva2api_h"
1807 vaapi_deps="va_va_h"
1808 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1809 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1810 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1811
1812 h263_vaapi_hwaccel_deps="vaapi"
1813 h263_vaapi_hwaccel_select="h263_decoder"
1814 h263_vdpau_hwaccel_deps="vdpau"
1815 h263_vdpau_hwaccel_select="h263_decoder"
1816 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1817 h264_dxva2_hwaccel_deps="dxva2"
1818 h264_dxva2_hwaccel_select="h264_decoder"
1819 h264_vaapi_hwaccel_deps="vaapi"
1820 h264_vaapi_hwaccel_select="h264_decoder"
1821 h264_vda_decoder_deps="vda"
1822 h264_vda_decoder_select="h264_decoder"
1823 h264_vda_hwaccel_deps="vda"
1824 h264_vda_hwaccel_select="h264_decoder"
1825 h264_vdpau_decoder_deps="vdpau"
1826 h264_vdpau_decoder_select="h264_decoder"
1827 h264_vdpau_hwaccel_deps="vdpau"
1828 h264_vdpau_hwaccel_select="h264_decoder"
1829 mpeg_vdpau_decoder_deps="vdpau"
1830 mpeg_vdpau_decoder_select="mpegvideo_decoder"
1831 mpeg1_vdpau_decoder_deps="vdpau"
1832 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1833 mpeg1_vdpau_hwaccel_deps="vdpau"
1834 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1835 mpeg2_crystalhd_decoder_select="crystalhd"
1836 mpeg2_dxva2_hwaccel_deps="dxva2"
1837 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1838 mpeg2_vaapi_hwaccel_deps="vaapi"
1839 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1840 mpeg2_vdpau_hwaccel_deps="vdpau"
1841 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1842 mpeg4_crystalhd_decoder_select="crystalhd"
1843 mpeg4_vaapi_hwaccel_deps="vaapi"
1844 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1845 mpeg4_vdpau_decoder_deps="vdpau"
1846 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1847 mpeg4_vdpau_hwaccel_deps="vdpau"
1848 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1849 msmpeg4_crystalhd_decoder_select="crystalhd"
1850 vc1_crystalhd_decoder_select="crystalhd"
1851 vc1_dxva2_hwaccel_deps="dxva2"
1852 vc1_dxva2_hwaccel_select="vc1_decoder"
1853 vc1_vaapi_hwaccel_deps="vaapi"
1854 vc1_vaapi_hwaccel_select="vc1_decoder"
1855 vc1_vdpau_decoder_deps="vdpau"
1856 vc1_vdpau_decoder_select="vc1_decoder"
1857 vc1_vdpau_hwaccel_deps="vdpau"
1858 vc1_vdpau_hwaccel_select="vc1_decoder"
1859 wmv3_crystalhd_decoder_select="crystalhd"
1860 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1861 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1862 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1863 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1864
1865 # parsers
1866 h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1867 mpeg4video_parser_select="error_resilience mpegvideo"
1868 mpegvideo_parser_select="error_resilience mpegvideo"
1869 vc1_parser_select="error_resilience mpegvideo"
1870
1871 # external libraries
1872 libaacplus_encoder_deps="libaacplus"
1873 libcelt_decoder_deps="libcelt"
1874 libfaac_encoder_deps="libfaac"
1875 libfaac_encoder_select="audio_frame_queue"
1876 libfdk_aac_encoder_deps="libfdk_aac"
1877 libfdk_aac_encoder_select="audio_frame_queue"
1878 libgsm_decoder_deps="libgsm"
1879 libgsm_encoder_deps="libgsm"
1880 libgsm_ms_decoder_deps="libgsm"
1881 libgsm_ms_encoder_deps="libgsm"
1882 libilbc_decoder_deps="libilbc"
1883 libilbc_encoder_deps="libilbc"
1884 libmodplug_demuxer_deps="libmodplug"
1885 libmp3lame_encoder_deps="libmp3lame"
1886 libmp3lame_encoder_select="audio_frame_queue"
1887 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1888 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1889 libopencore_amrnb_encoder_select="audio_frame_queue"
1890 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1891 libopenjpeg_decoder_deps="libopenjpeg"
1892 libopenjpeg_encoder_deps="libopenjpeg"
1893 libopus_decoder_deps="libopus"
1894 libopus_encoder_deps="libopus"
1895 libopus_encoder_select="audio_frame_queue"
1896 libschroedinger_decoder_deps="libschroedinger"
1897 libschroedinger_encoder_deps="libschroedinger"
1898 libspeex_decoder_deps="libspeex"
1899 libspeex_encoder_deps="libspeex"
1900 libspeex_encoder_select="audio_frame_queue"
1901 libstagefright_h264_decoder_deps="libstagefright_h264"
1902 libtheora_encoder_deps="libtheora"
1903 libtwolame_encoder_deps="libtwolame"
1904 libvo_aacenc_encoder_deps="libvo_aacenc"
1905 libvo_aacenc_encoder_select="audio_frame_queue"
1906 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1907 libvorbis_decoder_deps="libvorbis"
1908 libvorbis_encoder_deps="libvorbis"
1909 libvorbis_encoder_select="audio_frame_queue"
1910 libvpx_vp8_decoder_deps="libvpx"
1911 libvpx_vp8_encoder_deps="libvpx"
1912 libvpx_vp9_decoder_deps="libvpx"
1913 libvpx_vp9_encoder_deps="libvpx"
1914 libx264_encoder_deps="libx264"
1915 libx264rgb_encoder_deps="libx264"
1916 libxavs_encoder_deps="libxavs"
1917 libxvid_encoder_deps="libxvid"
1918 libutvideo_decoder_deps="libutvideo"
1919 libutvideo_encoder_deps="libutvideo"
1920
1921 # demuxers / muxers
1922 ac3_demuxer_select="ac3_parser"
1923 asf_stream_muxer_select="asf_muxer"
1924 avisynth_demuxer_deps="avisynth"
1925 dirac_demuxer_select="dirac_parser"
1926 dts_demuxer_select="dca_parser"
1927 dtshd_demuxer_select="dca_parser"
1928 eac3_demuxer_select="ac3_parser"
1929 f4v_muxer_select="mov_muxer"
1930 flac_demuxer_select="flac_parser"
1931 ipod_muxer_select="mov_muxer"
1932 ismv_muxer_select="mov_muxer"
1933 libnut_demuxer_deps="libnut"
1934 libnut_muxer_deps="libnut"
1935 matroska_audio_muxer_select="matroska_muxer"
1936 matroska_demuxer_suggest="bzlib lzo zlib"
1937 mov_demuxer_suggest="zlib"
1938 mov_muxer_select="rtpenc_chain"
1939 mp3_demuxer_select="mpegaudio_parser"
1940 mp4_muxer_select="mov_muxer"
1941 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1942 mpegtsraw_demuxer_select="mpegts_demuxer"
1943 mxf_d10_muxer_select="mxf_muxer"
1944 ogg_demuxer_select="golomb"
1945 psp_muxer_select="mov_muxer"
1946 rtp_demuxer_select="sdp_demuxer"
1947 rtp_muxer_select="mpegvideo"
1948 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1949 rtsp_demuxer_select="http_protocol rtpdec"
1950 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1951 sap_demuxer_select="sdp_demuxer"
1952 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1953 sdp_demuxer_select="rtpdec"
1954 smoothstreaming_muxer_select="ismv_muxer"
1955 spdif_muxer_select="aac_parser"
1956 tak_demuxer_select="tak_parser"
1957 tg2_muxer_select="mov_muxer"
1958 tgp_muxer_select="mov_muxer"
1959 vobsub_demuxer_select="mpegps_demuxer"
1960 w64_demuxer_deps="wav_demuxer"
1961 w64_muxer_deps="wav_muxer"
1962
1963 # indevs / outdevs
1964 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1965 alsa_outdev_deps="alsa_asoundlib_h"
1966 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1967 caca_outdev_deps="libcaca"
1968 dshow_indev_deps="IBaseFilter"
1969 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1970 dv1394_indev_deps="dv1394 dv_demuxer"
1971 fbdev_indev_deps="linux_fb_h"
1972 iec61883_indev_deps="libiec61883"
1973 jack_indev_deps="jack_jack_h sem_timedwait"
1974 lavfi_indev_deps="avfilter"
1975 libcdio_indev_deps="libcdio"
1976 libdc1394_indev_deps="libdc1394"
1977 libv4l2_indev_deps="libv4l2"
1978 openal_indev_deps="openal"
1979 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1980 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1981 pulse_indev_deps="libpulse"
1982 sdl_outdev_deps="sdl"
1983 sndio_indev_deps="sndio_h"
1984 sndio_outdev_deps="sndio_h"
1985 v4l_indev_deps="linux_videodev_h"
1986 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1987 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1988 vfwcap_indev_extralibs="-lavicap32"
1989 x11grab_indev_deps="x11grab"
1990
1991 # protocols
1992 bluray_protocol_deps="libbluray"
1993 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1994 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1995 ffrtmpcrypt_protocol_select="tcp_protocol"
1996 ffrtmphttp_protocol_deps="!librtmp_protocol"
1997 ffrtmphttp_protocol_select="http_protocol"
1998 gopher_protocol_select="network"
1999 httpproxy_protocol_select="tcp_protocol"
2000 http_protocol_select="tcp_protocol"
2001 https_protocol_select="tls_protocol"
2002 librtmp_protocol_deps="librtmp"
2003 librtmpe_protocol_deps="librtmp"
2004 librtmps_protocol_deps="librtmp"
2005 librtmpt_protocol_deps="librtmp"
2006 librtmpte_protocol_deps="librtmp"
2007 mmsh_protocol_select="http_protocol"
2008 mmst_protocol_select="network"
2009 rtmp_protocol_deps="!librtmp_protocol"
2010 rtmp_protocol_select="tcp_protocol"
2011 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2012 rtmps_protocol_deps="!librtmp_protocol"
2013 rtmps_protocol_select="tls_protocol"
2014 rtmpt_protocol_select="ffrtmphttp_protocol"
2015 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2016 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2017 rtp_protocol_select="udp_protocol"
2018 sctp_protocol_deps="struct_sctp_event_subscribe"
2019 sctp_protocol_select="network"
2020 srtp_protocol_select="rtp_protocol"
2021 tcp_protocol_select="network"
2022 tls_protocol_deps_any="openssl gnutls"
2023 tls_protocol_select="tcp_protocol"
2024 udp_protocol_select="network"
2025
2026 # filters
2027 aconvert_filter_deps="swresample"
2028 amovie_filter_deps="avcodec avformat"
2029 aresample_filter_deps="swresample"
2030 ass_filter_deps="libass"
2031 asyncts_filter_deps="avresample"
2032 atempo_filter_deps="avcodec rdft"
2033 blackframe_filter_deps="gpl"
2034 boxblur_filter_deps="gpl"
2035 colormatrix_filter_deps="gpl"
2036 cropdetect_filter_deps="gpl"
2037 decimate_filter_deps="gpl avcodec"
2038 delogo_filter_deps="gpl"
2039 deshake_filter_deps="avcodec"
2040 drawtext_filter_deps="libfreetype"
2041 ebur128_filter_deps="gpl"
2042 flite_filter_deps="libflite"
2043 frei0r_filter_deps="frei0r dlopen"
2044 frei0r_filter_extralibs='$ldl'
2045 frei0r_src_filter_deps="frei0r dlopen"
2046 frei0r_src_filter_extralibs='$ldl'
2047 geq_filter_deps="gpl"
2048 histeq_filter_deps="gpl"
2049 hqdn3d_filter_deps="gpl"
2050 hue_filter_deps="gpl"
2051 kerndeint_filter_deps="gpl"
2052 movie_filter_deps="avcodec avformat"
2053 mp_filter_deps="gpl avcodec swscale inline_asm"
2054 mptestsrc_filter_deps="gpl"
2055 negate_filter_deps="lut_filter"
2056 noise_filter_deps="gpl"
2057 resample_filter_deps="avresample"
2058 ocv_filter_deps="libopencv"
2059 pan_filter_deps="swresample"
2060 pp_filter_deps="gpl postproc"
2061 removelogo_filter_deps="avcodec avformat swscale"
2062 scale_filter_deps="swscale"
2063 smartblur_filter_deps="gpl swscale"
2064 showspectrum_filter_deps="avcodec rdft"
2065 subtitles_filter_deps="avformat avcodec libass"
2066 super2xsai_filter_deps="gpl"
2067 tinterlace_filter_deps="gpl"
2068 yadif_filter_deps="gpl"
2069 pixfmts_super2xsai_test_deps="super2xsai_filter"
2070 tinterlace_merge_test_deps="tinterlace_filter"
2071 tinterlace_pad_test_deps="tinterlace_filter"
2072
2073 # libraries
2074 avcodec_deps="avutil"
2075 avdevice_deps="avutil avcodec avformat"
2076 avfilter_deps="avutil"
2077 avformat_deps="avutil avcodec"
2078 avresample_deps="avutil"
2079 postproc_deps="avutil gpl"
2080 swscale_deps="avutil"
2081
2082 # programs
2083 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2084 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2085                setpts_filter null_filter anull_filter ffabuffersink_filter"
2086 ffplay_deps="avcodec avformat swscale swresample sdl"
2087 ffplay_select="ffbuffersink_filter rdft crop_filter"
2088 ffprobe_deps="avcodec avformat"
2089 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2090 ffserver_extralibs='$ldl'
2091
2092 # documentation
2093 podpages_deps="perl"
2094 manpages_deps="perl pod2man"
2095 htmlpages_deps="texi2html"
2096 txtpages_deps="makeinfo"
2097 doc_deps_any="manpages htmlpages podpages txtpages"
2098
2099 # default parameters
2100
2101 logfile="config.log"
2102
2103 # installation paths
2104 prefix_default="/usr/local"
2105 bindir_default='${prefix}/bin'
2106 datadir_default='${prefix}/share/ffmpeg'
2107 incdir_default='${prefix}/include'
2108 libdir_default='${prefix}/lib'
2109 mandir_default='${prefix}/share/man'
2110 shlibdir_default="$libdir_default"
2111
2112 # toolchain
2113 ar_default="ar"
2114 cc_default="gcc"
2115 cxx_default="g++"
2116 host_cc_default="gcc"
2117 cp_f="cp -f"
2118 install="install"
2119 ln_s="ln -sf"
2120 nm_default="nm -g"
2121 objformat="elf"
2122 pkg_config_default=pkg-config
2123 ranlib="ranlib"
2124 strip_default="strip"
2125 yasmexe_default="yasm"
2126
2127 nogas=":"
2128
2129 # machine
2130 arch_default=$(uname -m)
2131 cpu="generic"
2132
2133 # OS
2134 target_os_default=$(tolower $(uname -s))
2135 host_os=$target_os_default
2136
2137 # configurable options
2138 enable $PROGRAM_LIST
2139 enable $DOCUMENT_LIST
2140 enable $(filter_out avresample $LIBRARY_LIST)
2141 enable stripping
2142
2143 enable asm
2144 enable debug
2145 enable doc
2146 enable optimizations
2147 enable runtime_cpudetect
2148 enable safe_bitstream_reader
2149 enable static
2150 enable swscale_alpha
2151
2152 # build settings
2153 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2154 FFSERVERLDFLAGS=-Wl,-E
2155 LIBPREF="lib"
2156 LIBSUF=".a"
2157 FULLNAME='$(NAME)$(BUILDSUF)'
2158 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2159 SLIBPREF="lib"
2160 SLIBSUF=".so"
2161 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2162 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2163 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2164 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2165 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2166 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2167
2168 asflags_filter=echo
2169 cflags_filter=echo
2170 ldflags_filter=echo
2171
2172 AS_C='-c'
2173 AS_O='-o $@'
2174 CC_C='-c'
2175 CC_E='-E -o $@'
2176 CC_O='-o $@'
2177 CXX_C='-c'
2178 CXX_O='-o $@'
2179 LD_O='-o $@'
2180 LD_LIB='-l%'
2181 LD_PATH='-L'
2182 HOSTCC_C='-c'
2183 HOSTCC_O='-o $@'
2184 HOSTLD_O='-o $@'
2185
2186 host_cflags='-O3 -g'
2187 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2188 host_libs='-lm'
2189 host_cflags_filter=echo
2190 host_ldflags_filter=echo
2191
2192 target_path='$(CURDIR)'
2193
2194 # since the object filename is not given with the -MM flag, the compiler
2195 # is only able to print the basename, and we must add the path ourselves
2196 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2197 DEPFLAGS='-MM'
2198
2199 # find source path
2200 if test -f configure; then
2201     source_path=.
2202 else
2203     source_path=$(cd $(dirname "$0"); pwd)
2204     echo "$source_path" | grep -q '[[:blank:]]' &&
2205         die "Out of tree builds are impossible with whitespace in source path."
2206     test -e "$source_path/config.h" &&
2207         die "Out of tree builds are impossible with config.h in source dir."
2208 fi
2209
2210 for v in "$@"; do
2211     r=${v#*=}
2212     l=${v%"$r"}
2213     r=$(sh_quote "$r")
2214     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2215 done
2216
2217 find_things(){
2218     thing=$1
2219     pattern=$2
2220     file=$source_path/$3
2221     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2222 }
2223
2224 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2225 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2226 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2227 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2228 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2229 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2230 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2231 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2232 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2233 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2234 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2235
2236 ALL_COMPONENTS="
2237     $BSF_LIST
2238     $DECODER_LIST
2239     $DEMUXER_LIST
2240     $ENCODER_LIST
2241     $FILTER_LIST
2242     $HWACCEL_LIST
2243     $INDEV_LIST
2244     $MUXER_LIST
2245     $OUTDEV_LIST
2246     $PARSER_LIST
2247     $PROTOCOL_LIST
2248 "
2249
2250 for n in $COMPONENT_LIST; do
2251     v=$(toupper ${n%s})_LIST
2252     eval enable \$$v
2253     eval ${n}_if_any="\$$v"
2254 done
2255
2256 enable $ARCH_EXT_LIST
2257
2258 die_unknown(){
2259     echo "Unknown option \"$1\"."
2260     echo "See $0 --help for available options."
2261     exit 1
2262 }
2263
2264 print_3_columns() {
2265     cat | tr ' ' '\n' | sort | pr -r -3 -t
2266 }
2267
2268 show_list() {
2269     suffix=_$1
2270     shift
2271     echo $* | sed s/$suffix//g | print_3_columns
2272     exit 0
2273 }
2274
2275 rand_list(){
2276     IFS=', '
2277     set -- $*
2278     unset IFS
2279     for thing; do
2280         comp=${thing%:*}
2281         prob=${thing#$comp}
2282         prob=${prob#:}
2283         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2284         echo "prob ${prob:-0.5}"
2285         printf '%s\n' $comp
2286     done
2287 }
2288
2289 do_random(){
2290     action=$1
2291     shift
2292     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2293     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2294 }
2295
2296 for opt do
2297     optval="${opt#*=}"
2298     case "$opt" in
2299         --extra-ldflags=*)
2300             add_ldflags $optval
2301         ;;
2302         --extra-libs=*)
2303             add_extralibs $optval
2304         ;;
2305         --disable-devices)
2306             disable $INDEV_LIST $OUTDEV_LIST
2307         ;;
2308         --enable-debug=*)
2309             debuglevel="$optval"
2310         ;;
2311         --disable-programs)
2312             disable $PROGRAM_LIST
2313         ;;
2314         --disable-everything)
2315             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2316         ;;
2317         --disable-all)
2318             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2319             disable $LIBRARY_LIST $PROGRAM_LIST doc
2320         ;;
2321         --enable-random|--disable-random)
2322             action=${opt%%-random}
2323             do_random ${action#--} $COMPONENT_LIST
2324         ;;
2325         --enable-random=*|--disable-random=*)
2326             action=${opt%%-random=*}
2327             do_random ${action#--} $optval
2328         ;;
2329         --enable-*=*|--disable-*=*)
2330             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2331             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2332             eval list=\$$(toupper $thing)_LIST
2333             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2334             list=$(filter "$name" $list)
2335             [ "$list" = "" ] && warn "Option $opt did not match anything"
2336             $action $list
2337         ;;
2338         --enable-?*|--disable-?*)
2339             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2340             if is_in $option $COMPONENT_LIST; then
2341                 test $action = disable && action=unset
2342                 eval $action \$$(toupper ${option%s})_LIST
2343             elif is_in $option $CMDLINE_SELECT; then
2344                 $action $option
2345             else
2346                 die_unknown $opt
2347             fi
2348         ;;
2349         --list-*)
2350             NAME="${opt#--list-}"
2351             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2352             NAME=${NAME%s}
2353             eval show_list $NAME \$$(toupper $NAME)_LIST
2354         ;;
2355         --help|-h) show_help
2356         ;;
2357         --fatal-warnings) enable fatal_warnings
2358         ;;
2359         *)
2360             optname="${opt%%=*}"
2361             optname="${optname#--}"
2362             optname=$(echo "$optname" | sed 's/-/_/g')
2363             if is_in $optname $CMDLINE_SET; then
2364                 eval $optname='$optval'
2365             elif is_in $optname $CMDLINE_APPEND; then
2366                 append $optname "$optval"
2367             else
2368                 die_unknown $opt
2369             fi
2370         ;;
2371     esac
2372 done
2373
2374 disabled logging && logfile=/dev/null
2375
2376 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2377 set >> $logfile
2378
2379 test -n "$cross_prefix" && enable cross_compile
2380
2381 if enabled cross_compile; then
2382     test -n "$arch" && test -n "$target_os" ||
2383         die "Must specify target arch and OS when cross-compiling"
2384 fi
2385
2386 ar_default="${cross_prefix}${ar_default}"
2387 cc_default="${cross_prefix}${cc_default}"
2388 cxx_default="${cross_prefix}${cxx_default}"
2389 nm_default="${cross_prefix}${nm_default}"
2390 pkg_config_default="${cross_prefix}${pkg_config_default}"
2391 ranlib="${cross_prefix}${ranlib}"
2392 strip_default="${cross_prefix}${strip_default}"
2393
2394 sysinclude_default="${sysroot}/usr/include"
2395
2396 case "$toolchain" in
2397     clang-asan)
2398         cc_default="clang"
2399         add_cflags  -faddress-sanitizer
2400         add_ldflags -faddress-sanitizer
2401     ;;
2402     clang-tsan)
2403         cc_default="clang"
2404         add_cflags  -fthread-sanitizer
2405         add_ldflags -fthread-sanitizer
2406     ;;
2407     msvc)
2408         cc_default="c99wrap cl"
2409         ld_default="c99wrap link"
2410         nm_default="dumpbin -symbols"
2411         ar_default="lib"
2412         target_os_default="win32"
2413     ;;
2414     ?*)
2415         die "Unknown toolchain $toolchain"
2416     ;;
2417 esac
2418
2419 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2420 enabled cross_compile || host_cc_default=$cc
2421 set_default host_cc
2422
2423 if ! $pkg_config --version >/dev/null 2>&1; then
2424     warn "$pkg_config not found, library detection may fail."
2425     pkg_config=false
2426 fi
2427
2428 exesuf() {
2429     case $1 in
2430         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2431     esac
2432 }
2433
2434 EXESUF=$(exesuf $target_os)
2435 HOSTEXESUF=$(exesuf $host_os)
2436
2437 # set temporary file name
2438 : ${TMPDIR:=$TEMPDIR}
2439 : ${TMPDIR:=$TMP}
2440 : ${TMPDIR:=/tmp}
2441
2442 if ! check_cmd mktemp -u XXXXXX; then
2443     # simple replacement for missing mktemp
2444     # NOT SAFE FOR GENERAL USE
2445     mktemp(){
2446         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2447     }
2448 fi
2449
2450 tmpfile(){
2451     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2452         (set -C; exec > $tmp) 2>/dev/null ||
2453         die "Unable to create temporary file in $TMPDIR."
2454     append TMPFILES $tmp
2455     eval $1=$tmp
2456 }
2457
2458 trap 'rm -f -- $TMPFILES' EXIT
2459
2460 tmpfile TMPASM .asm
2461 tmpfile TMPC   .c
2462 tmpfile TMPCPP .cpp
2463 tmpfile TMPE   $EXESUF
2464 tmpfile TMPH   .h
2465 tmpfile TMPO   .o
2466 tmpfile TMPS   .S
2467 tmpfile TMPSH  .sh
2468 tmpfile TMPV   .ver
2469
2470 unset -f mktemp
2471
2472 chmod +x $TMPE
2473
2474 # make sure we can execute files in $TMPDIR
2475 cat > $TMPSH 2>> $logfile <<EOF
2476 #! /bin/sh
2477 EOF
2478 chmod +x $TMPSH >> $logfile 2>&1
2479 if ! $TMPSH >> $logfile 2>&1; then
2480     cat <<EOF
2481 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2482 variable to another directory and make sure that it is not mounted noexec.
2483 EOF
2484     die "Sanity test failed."
2485 fi
2486
2487 ccc_flags(){
2488     for flag; do
2489         case $flag in
2490             -std=c99)           echo -c99                       ;;
2491             -mcpu=*)            echo -arch ${flag#*=}           ;;
2492             -mieee)             echo -ieee                      ;;
2493             -O*|-fast)          echo $flag                      ;;
2494             -fno-math-errno)    echo -assume nomath_errno       ;;
2495             -g)                 echo -g3                        ;;
2496             -Wall)              echo -msg_enable level2         ;;
2497             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2498             -Wl,*)              echo $flag                      ;;
2499             -f*|-W*)                                            ;;
2500             *)                  echo $flag                      ;;
2501         esac
2502    done
2503 }
2504
2505 msvc_flags(){
2506     for flag; do
2507         case $flag in
2508             -fomit-frame-pointer) echo -Oy ;;
2509             -g)                   echo -Z7 ;;
2510             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2511                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2512                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2513                                        -wd4554 \
2514                                        -wd4996 -wd4273 ;;
2515             -std=c99)             ;;
2516             -fno-math-errno)      ;;
2517             -fno-common)          ;;
2518             -fno-signed-zeros)    ;;
2519             -fPIC)                ;;
2520             -lz)                  echo zlib.lib ;;
2521             -lavifil32)           echo vfw32.lib ;;
2522             -lavicap32)           echo vfw32.lib user32.lib ;;
2523             -l*)                  echo ${flag#-l}.lib ;;
2524             *)                    echo $flag ;;
2525         esac
2526     done
2527 }
2528
2529 pgi_flags(){
2530     for flag; do
2531         case $flag in
2532             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2533             -fomit-frame-pointer) echo -Mnoframe ;;
2534             -g)                   echo -gopt ;;
2535             *)                    echo $flag ;;
2536         esac
2537     done
2538 }
2539
2540 suncc_flags(){
2541     for flag; do
2542         case $flag in
2543             -march=*|-mcpu=*)
2544                 case "${flag#*=}" in
2545                     native)                   echo -xtarget=native       ;;
2546                     v9|niagara)               echo -xarch=sparc          ;;
2547                     ultrasparc)               echo -xarch=sparcvis       ;;
2548                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2549                     i586|pentium)             echo -xchip=pentium        ;;
2550                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2551                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2552                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2553                     pentium4*)          echo -xtarget=pentium4           ;;
2554                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2555                     *-sse3)             echo -xarch=sse3                 ;;
2556                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2557                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2558                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2559                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2560                     bdver*)                   echo -xarch=avx            ;;
2561                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2562                     k8|opteron|athlon64|athlon-fx)
2563                                               echo -xarch=sse2a          ;;
2564                     athlon*)                  echo -xarch=pentium_proa   ;;
2565                 esac
2566                 ;;
2567             -std=c99)             echo -xc99              ;;
2568             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2569             -fPIC)                echo -KPIC -xcode=pic32 ;;
2570             -W*,*)                echo $flag              ;;
2571             -f*-*|-W*|-mimpure-text)                      ;;
2572             -shared)              echo -G                 ;;
2573             *)                    echo $flag              ;;
2574         esac
2575     done
2576 }
2577
2578 tms470_flags(){
2579     for flag; do
2580         case $flag in
2581             -march=*|-mcpu=*)
2582                 case "${flag#*=}" in
2583                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2584                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2585                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2586                     armv6*|arm11*)          echo -mv=6   ;;
2587                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2588                                             echo -mv=5e  ;;
2589                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2590                 esac
2591                 ;;
2592             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2593             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2594             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2595             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2596             -msoft-float)   echo --float_support=vfplib       ;;
2597             -O[0-3]|-mf=*)  echo $flag                        ;;
2598             -g)             echo -g -mn                       ;;
2599             -pds=*)         echo $flag                        ;;
2600             -D*|-I*)        echo $flag                        ;;
2601             --gcc|--abi=*)  echo $flag                        ;;
2602             -me)            echo $flag                        ;;
2603         esac
2604     done
2605 }
2606
2607 probe_cc(){
2608     pfx=$1
2609     _cc=$2
2610
2611     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2612     unset _ld_o _ldflags _ld_lib _ld_path
2613     unset _depflags _DEPCMD _DEPFLAGS
2614     _flags_filter=echo
2615
2616     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2617         _type=llvm_gcc
2618         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2619         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2620         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2621         _cflags_speed='-O3'
2622         _cflags_size='-Os'
2623     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2624         _type=gcc
2625         gcc_version=$($_cc --version | head -n1)
2626         gcc_basever=$($_cc -dumpversion)
2627         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2628         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2629         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2630         if ! $_cc -dumpversion | grep -q '^2\.'; then
2631             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2632         fi
2633         _cflags_speed='-O3'
2634         _cflags_size='-Os'
2635     elif $_cc --version 2>/dev/null | grep -q Intel; then
2636         _type=icc
2637         _ident=$($_cc --version | head -n1)
2638         _depflags='-MMD'
2639         _cflags_speed='-O3'
2640         _cflags_size='-Os'
2641         _cflags_noopt='-O1'
2642     elif $_cc -v 2>&1 | grep -q xlc; then
2643         _type=xlc
2644         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2645         _cflags_speed='-O5'
2646         _cflags_size='-O5 -qcompact'
2647     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2648         _type=ccc
2649         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2650         _DEPFLAGS='-M'
2651         _cflags_speed='-fast'
2652         _cflags_size='-O1'
2653         _flags_filter=ccc_flags
2654     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2655         test -d "$sysroot" || die "No valid sysroot specified."
2656         _type=armcc
2657         _ident=$($_cc --vsn | head -n1)
2658         armcc_conf="$PWD/armcc.conf"
2659         $_cc --arm_linux_configure                 \
2660              --arm_linux_config_file="$armcc_conf" \
2661              --configure_sysroot="$sysroot"        \
2662              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2663              die "Error creating armcc configuration file."
2664         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2665         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2666         as_default="${cross_prefix}gcc"
2667         _depflags='-MMD'
2668         _cflags_speed='-O3'
2669         _cflags_size='-Os'
2670     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2671         _type=tms470
2672         _ident=$($_cc -version | head -n1 | tr -s ' ')
2673         _flags='--gcc --abi=eabi -me'
2674         _cc_e='-ppl -fe=$@'
2675         _cc_o='-fe=$@'
2676         _depflags='-ppa -ppd=$(@:.o=.d)'
2677         _cflags_speed='-O3 -mf=5'
2678         _cflags_size='-O3 -mf=2'
2679         _flags_filter=tms470_flags
2680     elif $_cc -v 2>&1 | grep -q clang; then
2681         _type=clang
2682         _ident=$($_cc --version | head -n1)
2683         _depflags='-MMD'
2684         _cflags_speed='-O3'
2685         _cflags_size='-Os'
2686     elif $_cc -V 2>&1 | grep -q Sun; then
2687         _type=suncc
2688         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2689         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2690         _DEPFLAGS='-xM1 -xc99'
2691         _ldflags='-std=c99'
2692         _cflags_speed='-O5'
2693         _cflags_size='-O5 -xspace'
2694         _flags_filter=suncc_flags
2695     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2696         _type=pathscale
2697         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2698         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2699         _cflags_speed='-O2'
2700         _cflags_size='-Os'
2701         _flags_filter='filter_out -Wdisabled-optimization'
2702     elif $_cc -v 2>&1 | grep -q Open64; then
2703         _type=open64
2704         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2705         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2706         _cflags_speed='-O2'
2707         _cflags_size='-Os'
2708         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2709     elif $_cc -V 2>&1 | grep -q Portland; then
2710         _type=pgi
2711         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2712         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2713         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2714         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2715         _cflags_noopt="-O1"
2716         _flags_filter=pgi_flags
2717     elif $_cc 2>&1 | grep -q Microsoft; then
2718         _type=msvc
2719         _ident=$($cc 2>&1 | head -n1)
2720         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2721         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2722         _cflags_speed="-O2"
2723         _cflags_size="-O1"
2724         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2725         if $_cc 2>&1 | grep -q Linker; then
2726             _ld_o='-out $@'
2727         else
2728             _ld_o='-Fe$@'
2729         fi
2730         _cc_o='-Fo $@'
2731         _cc_e='-P -Fi $@'
2732         _flags_filter=msvc_flags
2733         _ld_lib='lib%.a'
2734         _ld_path='-libpath:'
2735         _flags='-nologo'
2736         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2737         if [ $pfx = hostcc ]; then
2738             append _cflags -Dsnprintf=_snprintf
2739         fi
2740         disable stripping
2741     fi
2742
2743     eval ${pfx}_type=\$_type
2744     eval ${pfx}_ident=\$_ident
2745 }
2746
2747 set_ccvars(){
2748     eval ${1}_C=\${_cc_c-\${${1}_C}}
2749     eval ${1}_E=\${_cc_e-\${${1}_E}}
2750     eval ${1}_O=\${_cc_o-\${${1}_O}}
2751
2752     if [ -n "$_depflags" ]; then
2753         eval ${1}_DEPFLAGS=\$_depflags
2754     else
2755         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2756         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2757         eval DEP${1}FLAGS=\$_flags
2758     fi
2759 }
2760
2761 probe_cc cc "$cc"
2762 cflags_filter=$_flags_filter
2763 cflags_speed=$_cflags_speed
2764 cflags_size=$_cflags_size
2765 cflags_noopt=$_cflags_noopt
2766 add_cflags $_flags $_cflags
2767 cc_ldflags=$_ldflags
2768 set_ccvars CC
2769
2770 probe_cc hostcc "$host_cc"
2771 host_cflags_filter=$_flags_filter
2772 add_host_cflags  $_flags $_cflags
2773 set_ccvars HOSTCC
2774
2775 test -n "$cc_type" && enable $cc_type ||
2776     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2777
2778 : ${as_default:=$cc}
2779 : ${dep_cc_default:=$cc}
2780 : ${ld_default:=$cc}
2781 : ${host_ld_default:=$host_cc}
2782 set_default ar as dep_cc ld host_ld
2783
2784 probe_cc as "$as"
2785 asflags_filter=$_flags_filter
2786 add_asflags $_flags $_cflags
2787 set_ccvars AS
2788
2789 probe_cc ld "$ld"
2790 ldflags_filter=$_flags_filter
2791 add_ldflags $_flags $_ldflags
2792 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2793 LD_O=${_ld_o-$LD_O}
2794 LD_LIB=${_ld_lib-$LD_LIB}
2795 LD_PATH=${_ld_path-$LD_PATH}
2796
2797 probe_cc hostld "$host_ld"
2798 host_ldflags_filter=$_flags_filter
2799 add_host_ldflags $_flags $_ldflags
2800 HOSTLD_O=${_ld_o-$HOSTLD_O}
2801
2802 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2803     probe_cc depcc "$dep_cc"
2804     CCDEP=${_DEPCMD:-$DEPCMD}
2805     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2806     DEPCCFLAGS=$_flags
2807 fi
2808
2809 if $ar 2>&1 | grep -q Microsoft; then
2810     arflags="-nologo"
2811     ar_o='-out:$@'
2812 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2813     arflags="rq"
2814     ar_o='$@'
2815 else
2816     arflags="rc"
2817     ar_o='$@'
2818 fi
2819
2820 add_cflags $extra_cflags
2821 add_cxxflags $extra_cxxflags
2822 add_asflags $extra_cflags
2823
2824 if test -n "$sysroot"; then
2825     case "$cc_type" in
2826         gcc|llvm_gcc|clang)
2827             add_cppflags --sysroot="$sysroot"
2828             add_ldflags --sysroot="$sysroot"
2829         ;;
2830         tms470)
2831             add_cppflags -I"$sysinclude"
2832             add_ldflags  --sysroot="$sysroot"
2833         ;;
2834     esac
2835 fi
2836
2837 if test "$cpu" = host; then
2838     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2839
2840     case "$cc_type" in
2841         gcc|llvm_gcc)
2842             check_native(){
2843                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2844                 sed -n "/cc1.*$1=/{
2845                             s/.*$1=\\([^ ]*\\).*/\\1/
2846                             p
2847                             q
2848                         }" $TMPE
2849             }
2850             cpu=$(check_native -march || check_native -mcpu)
2851         ;;
2852     esac
2853
2854     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2855 fi
2856
2857 # Deal with common $arch aliases
2858 case "$arch" in
2859     aarch64|arm64)
2860         arch="aarch64"
2861     ;;
2862     arm*|iPad*)
2863         arch="arm"
2864     ;;
2865     mips*|IP*)
2866         arch="mips"
2867     ;;
2868     parisc*|hppa*)
2869         arch="parisc"
2870     ;;
2871     "Power Macintosh"|ppc*|powerpc*)
2872         arch="ppc"
2873     ;;
2874     s390|s390x)
2875         arch="s390"
2876     ;;
2877     sh4|sh)
2878         arch="sh4"
2879     ;;
2880     sun4u|sparc*)
2881         arch="sparc"
2882     ;;
2883     tilegx|tile-gx)
2884         arch="tilegx"
2885     ;;
2886     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2887         arch="x86"
2888     ;;
2889 esac
2890
2891 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2892 enable $arch
2893
2894 # Add processor-specific flags
2895 if enabled aarch64; then
2896
2897     case $cpu in
2898         armv*)
2899             cpuflags="-march=$cpu"
2900         ;;
2901         *)
2902             cpuflags="-mcpu=$cpu"
2903         ;;
2904     esac
2905
2906 elif enabled alpha; then
2907
2908     cpuflags="-mcpu=$cpu"
2909
2910 elif enabled arm; then
2911
2912     check_arm_arch() {
2913         check_cpp_condition stddef.h \
2914             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2915             $cpuflags
2916     }
2917
2918     probe_arm_arch() {
2919         if   check_arm_arch 4;        then echo armv4;
2920         elif check_arm_arch 4T;       then echo armv4t;
2921         elif check_arm_arch 5;        then echo armv5;
2922         elif check_arm_arch 5E;       then echo armv5e;
2923         elif check_arm_arch 5T;       then echo armv5t;
2924         elif check_arm_arch 5TE;      then echo armv5te;
2925         elif check_arm_arch 5TEJ;     then echo armv5te;
2926         elif check_arm_arch 6;        then echo armv6;
2927         elif check_arm_arch 6J;       then echo armv6j;
2928         elif check_arm_arch 6K;       then echo armv6k;
2929         elif check_arm_arch 6Z;       then echo armv6z;
2930         elif check_arm_arch 6ZK;      then echo armv6zk;
2931         elif check_arm_arch 6T2;      then echo armv6t2;
2932         elif check_arm_arch 7;        then echo armv7;
2933         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2934         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2935         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2936         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2937         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2938         fi
2939     }
2940
2941     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2942
2943     case $cpu in
2944         armv*)
2945             cpuflags="-march=$cpu"
2946             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2947         ;;
2948         *)
2949             cpuflags="-mcpu=$cpu"
2950             case $cpu in
2951                 cortex-a*)                               subarch=armv7a  ;;
2952                 cortex-r*)                               subarch=armv7r  ;;
2953                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2954                 arm11*)                                  subarch=armv6   ;;
2955                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2956                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2957                 *)                             subarch=$(probe_arm_arch) ;;
2958             esac
2959         ;;
2960     esac
2961
2962     case "$subarch" in
2963         armv5t*)    enable fast_clz                ;;
2964         armv[6-8]*) enable fast_clz fast_unaligned ;;
2965     esac
2966
2967 elif enabled avr32; then
2968
2969     case $cpu in
2970         ap7[02]0[0-2])
2971             subarch="avr32_ap"
2972             cpuflags="-mpart=$cpu"
2973         ;;
2974         ap)
2975             subarch="avr32_ap"
2976             cpuflags="-march=$cpu"
2977         ;;
2978         uc3[ab]*)
2979             subarch="avr32_uc"
2980             cpuflags="-mcpu=$cpu"
2981         ;;
2982         uc)
2983             subarch="avr32_uc"
2984             cpuflags="-march=$cpu"
2985         ;;
2986     esac
2987
2988 elif enabled bfin; then
2989
2990     cpuflags="-mcpu=$cpu"
2991
2992 elif enabled mips; then
2993
2994     cpuflags="-march=$cpu"
2995
2996     case $cpu in
2997         24kc)
2998             disable mipsfpu
2999             disable mipsdspr1
3000             disable mipsdspr2
3001         ;;
3002         24kf*)
3003             disable mipsdspr1
3004             disable mipsdspr2
3005         ;;
3006         24kec|34kc|1004kc)
3007             disable mipsfpu
3008             disable mipsdspr2
3009         ;;
3010         24kef*|34kf*|1004kf*)
3011             disable mipsdspr2
3012         ;;
3013         74kc)
3014             disable mipsfpu
3015         ;;
3016     esac
3017
3018 elif enabled ppc; then
3019
3020     case $(tolower $cpu) in
3021         601|ppc601|powerpc601)
3022             cpuflags="-mcpu=601"
3023             disable altivec
3024         ;;
3025         603*|ppc603*|powerpc603*)
3026             cpuflags="-mcpu=603"
3027             disable altivec
3028         ;;
3029         604*|ppc604*|powerpc604*)
3030             cpuflags="-mcpu=604"
3031             disable altivec
3032         ;;
3033         g3|75*|ppc75*|powerpc75*)
3034             cpuflags="-mcpu=750"
3035             disable altivec
3036         ;;
3037         g4|745*|ppc745*|powerpc745*)
3038             cpuflags="-mcpu=7450"
3039         ;;
3040         74*|ppc74*|powerpc74*)
3041             cpuflags="-mcpu=7400"
3042         ;;
3043         g5|970|ppc970|powerpc970)
3044             cpuflags="-mcpu=970"
3045         ;;
3046         power[3-7]*)
3047             cpuflags="-mcpu=$cpu"
3048         ;;
3049         cell)
3050             cpuflags="-mcpu=cell"
3051             enable ldbrx
3052         ;;
3053         e500mc)
3054             cpuflags="-mcpu=e500mc"
3055             disable altivec
3056         ;;
3057         e500v2)
3058             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3059             disable altivec
3060         ;;
3061         e500)
3062             cpuflags="-mcpu=8540 -mhard-float"
3063             disable altivec
3064         ;;
3065     esac
3066
3067 elif enabled sparc; then
3068
3069     case $cpu in
3070         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3071             cpuflags="-mcpu=$cpu"
3072             disable vis
3073         ;;
3074         ultrasparc*|niagara[234])
3075             cpuflags="-mcpu=$cpu"
3076         ;;
3077     esac
3078
3079 elif enabled x86; then
3080
3081     case $cpu in
3082         i[345]86|pentium)
3083             cpuflags="-march=$cpu"
3084             disable mmx
3085         ;;
3086         # targets that do NOT support conditional mov (cmov)
3087         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3088             cpuflags="-march=$cpu"
3089             disable cmov
3090         ;;
3091         # targets that do support conditional mov (cmov)
3092         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3093             cpuflags="-march=$cpu"
3094             enable cmov
3095             enable fast_cmov
3096         ;;
3097         # targets that do support conditional mov but on which it's slow
3098         pentium4|pentium4m|prescott|nocona)
3099             cpuflags="-march=$cpu"
3100             enable cmov
3101             disable fast_cmov
3102         ;;
3103     esac
3104
3105 fi
3106
3107 if [ "$cpu" != generic ]; then
3108     add_cflags  $cpuflags
3109     add_asflags $cpuflags
3110 fi
3111
3112 # compiler sanity check
3113 check_exec <<EOF
3114 int main(void){ return 0; }
3115 EOF
3116 if test "$?" != 0; then
3117     echo "$cc is unable to create an executable file."
3118     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3119         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3120         echo "Only do this if you know what cross compiling means."
3121     fi
3122     die "C compiler test failed."
3123 fi
3124
3125 add_cppflags -D_ISOC99_SOURCE
3126 add_cxxflags -D__STDC_CONSTANT_MACROS
3127 check_cflags -std=c99
3128 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3129 #include <stdlib.h>
3130 EOF
3131 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3132 #include <stdlib.h>
3133 EOF
3134
3135 check_host_cflags -std=c99
3136 check_host_cflags -Wall
3137
3138 check_64bit(){
3139     arch32=$1
3140     arch64=$2
3141     expr=$3
3142     check_code cc "" "int test[2*($expr) - 1]" &&
3143         subarch=$arch64 || subarch=$arch32
3144 }
3145
3146 case "$arch" in
3147     aarch64|alpha|ia64)
3148         spic=$shared
3149     ;;
3150     mips)
3151         check_64bit mips mips64 '_MIPS_SIM > 1'
3152         spic=$shared
3153     ;;
3154     parisc)
3155         check_64bit parisc parisc64 'sizeof(void *) > 4'
3156         spic=$shared
3157     ;;
3158     ppc)
3159         check_64bit ppc ppc64 'sizeof(void *) > 4'
3160         spic=$shared
3161     ;;
3162     sparc)
3163         check_64bit sparc sparc64 'sizeof(void *) > 4'
3164         spic=$shared
3165     ;;
3166     x86)
3167         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3168         if test "$subarch" = "x86_64"; then
3169             spic=$shared
3170         fi
3171     ;;
3172     ppc)
3173         check_cc <<EOF && subarch="ppc64"
3174         int test[(int)sizeof(char*) - 7];
3175 EOF
3176     ;;
3177 esac
3178
3179 enable $subarch
3180 enabled spic && enable pic
3181
3182 # OS specific
3183 case $target_os in
3184     haiku)
3185         prefix_default="/boot/common"
3186         network_extralibs="-lnetwork"
3187         host_libs=
3188         ;;
3189     sunos)
3190         FFSERVERLDFLAGS=""
3191         SHFLAGS='-shared -Wl,-h,$$(@F)'
3192         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3193         network_extralibs="-lsocket -lnsl"
3194         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3195         # When using suncc to build, the Solaris linker will mark
3196         # an executable with each instruction set encountered by
3197         # the Solaris assembler.  As our libraries contain their own
3198         # guards for processor-specific code, instead suppress
3199         # generation of the HWCAPS ELF section on Solaris x86 only.
3200         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3201         nm_default='nm -P -g'
3202         ;;
3203     netbsd)
3204         disable symver
3205         oss_indev_extralibs="-lossaudio"
3206         oss_outdev_extralibs="-lossaudio"
3207         enabled gcc || check_ldflags -Wl,-zmuldefs
3208         ;;
3209     openbsd|bitrig)
3210         disable symver
3211         SHFLAGS='-shared'
3212         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3213         SLIB_INSTALL_LINKS=
3214         oss_indev_extralibs="-lossaudio"
3215         oss_outdev_extralibs="-lossaudio"
3216         ;;
3217     dragonfly)
3218         disable symver
3219         ;;
3220     freebsd)
3221         ;;
3222     bsd/os)
3223         add_extralibs -lpoll -lgnugetopt
3224         strip="strip -d"
3225         ;;
3226     darwin)
3227         gas="gas-preprocessor.pl $cc"
3228         enabled ppc && add_asflags -force_cpusubtype_ALL
3229         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3230         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3231         strip="${strip} -x"
3232         add_ldflags -Wl,-dynamic,-search_paths_first
3233         SLIBSUF=".dylib"
3234         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3235         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3236         FFSERVERLDFLAGS=-Wl,-bind_at_load
3237         objformat="macho"
3238         enabled x86_64 && objformat="macho64"
3239         enabled_any pic shared ||
3240             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3241         ;;
3242     mingw32*)
3243         if test $target_os = "mingw32ce"; then
3244             disable network
3245         else
3246             target_os=mingw32
3247         fi
3248         LIBTARGET=i386
3249         if enabled x86_64; then
3250             LIBTARGET="i386:x86-64"
3251         elif enabled arm; then
3252             LIBTARGET=arm-wince
3253         fi
3254         shlibdir_default="$bindir_default"
3255         SLIBPREF=""
3256         SLIBSUF=".dll"
3257         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3258         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3259         dlltool="${cross_prefix}dlltool"
3260         if check_cmd lib.exe -list; then
3261             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3262             if enabled x86_64; then
3263                 LIBTARGET=x64
3264             fi
3265         elif check_cmd $dlltool --version; then
3266             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3267         fi
3268         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3269         SLIB_INSTALL_LINKS=
3270         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3271         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3272         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3273         objformat="win32"
3274         ranlib=:
3275         enable dos_paths
3276         ;;
3277     win32|win64)
3278         if enabled shared; then
3279             # Link to the import library instead of the normal static library
3280             # for shared libs.
3281             LD_LIB='%.lib'
3282             # Cannot build shared and static libraries at the same time with
3283             # MSVC.
3284             disable static
3285         fi
3286         shlibdir_default="$bindir_default"
3287         SLIBPREF=""
3288         SLIBSUF=".dll"
3289         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3290         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3291         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3292         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3293         SLIB_INSTALL_LINKS=
3294         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3295         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3296         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3297         objformat="win32"
3298         ranlib=:
3299         enable dos_paths
3300         ;;
3301     cygwin*)
3302         target_os=cygwin
3303         shlibdir_default="$bindir_default"
3304         SLIBPREF="cyg"
3305         SLIBSUF=".dll"
3306         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3307         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3308         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3309         SLIB_INSTALL_LINKS=
3310         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3311         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3312         objformat="win32"
3313         enable dos_paths
3314         ;;
3315     *-dos|freedos|opendos)
3316         network_extralibs="-lsocket"
3317         objformat="coff"
3318         enable dos_paths
3319         add_cppflags -U__STRICT_ANSI__
3320         ;;
3321     linux)
3322         enable dv1394
3323         ;;
3324     irix*)
3325         target_os=irix
3326         ranlib="echo ignoring ranlib"
3327         ;;
3328     os/2*)
3329         strip="lxlite -CS"
3330         ln_s="cp -f"
3331         objformat="aout"
3332         add_cppflags -D_GNU_SOURCE
3333         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3334         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3335         FFSERVERLDFLAGS=""
3336         LIBSUF="_s.a"
3337         SLIBPREF=""
3338         SLIBSUF=".dll"
3339         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3340         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3341         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3342             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3343             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3344             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3345             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3346             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3347         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3348             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3349         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3350         enable dos_paths
3351         enable_weak os2threads
3352         ;;
3353     gnu/kfreebsd)
3354         add_cppflags -D_BSD_SOURCE
3355         ;;
3356     gnu)
3357         ;;
3358     qnx)
3359         add_cppflags -D_QNX_SOURCE
3360         network_extralibs="-lsocket"
3361         ;;
3362     symbian)
3363         SLIBSUF=".dll"
3364         enable dos_paths
3365         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3366         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3367         add_ldflags -Wl,--target1-abs,--no-undefined \
3368                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3369                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3370         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3371                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3372                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3373         ;;
3374     osf1)
3375         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3376         FFSERVERLDFLAGS=
3377         ;;
3378     minix)
3379         ;;
3380     plan9)
3381         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3382                      -D_REENTRANT_SOURCE        \
3383                      -D_RESEARCH_SOURCE         \
3384                      -DFD_SETSIZE=96            \
3385                      -DHAVE_SOCK_OPTS
3386         add_compat strtod.o strtod=avpriv_strtod
3387         network_extralibs='-lbsd'
3388         exeobjs=compat/plan9/main.o
3389         disable ffserver
3390         ln_s='ln -s -f'
3391         cp_f='cp'
3392         ;;
3393     none)
3394         ;;
3395     *)
3396         die "Unknown OS '$target_os'."
3397         ;;
3398 esac
3399
3400 # determine libc flavour
3401
3402 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3403 if check_cpp_condition features.h "defined __UCLIBC__"; then
3404     libc_type=uclibc
3405     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3406 elif check_cpp_condition features.h "defined __GLIBC__"; then
3407     libc_type=glibc
3408     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3409 # MinGW headers can be installed on Cygwin, so check for newlib first.
3410 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3411     libc_type=newlib
3412     add_cppflags -U__STRICT_ANSI__
3413 elif check_header _mingw.h; then
3414     libc_type=mingw
3415     check_cpp_condition _mingw.h \
3416         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3417             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3418         die "ERROR: MinGW runtime version must be >= 3.15."
3419     add_cppflags -U__STRICT_ANSI__
3420     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3421             __MINGW64_VERSION_MAJOR < 3"; then
3422         add_compat msvcrt/snprintf.o
3423         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3424     fi
3425 elif check_func_headers stdlib.h _get_doserrno; then
3426     libc_type=msvcrt
3427     add_compat strtod.o strtod=avpriv_strtod
3428     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3429                                  _snprintf=avpriv_snprintf  \
3430                                  vsnprintf=avpriv_vsnprintf
3431 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3432     libc_type=klibc
3433 fi
3434
3435 test -n "$libc_type" && enable $libc_type
3436
3437 # hacks for compiler/libc/os combinations
3438
3439 if enabled_all tms470 glibc; then
3440     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3441     add_cppflags -D__USER_LABEL_PREFIX__=
3442     add_cppflags -D__builtin_memset=memset
3443     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3444     add_cflags   -pds=48    # incompatible redefinition of macro
3445 fi
3446
3447 if enabled_all ccc glibc; then
3448     add_ldflags -Wl,-z,now  # calls to libots crash without this
3449 fi
3450
3451 esc(){
3452     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3453 }
3454
3455 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3456
3457 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3458
3459 set_default $PATHS_LIST
3460 set_default nm
3461
3462 # we need to build at least one lib type
3463 if ! enabled_any static shared; then
3464     cat <<EOF
3465 At least one library type must be built.
3466 Specify --enable-static to build the static libraries or --enable-shared to
3467 build the shared libraries as well. To only build the shared libraries specify
3468 --disable-static in addition to --enable-shared.
3469 EOF
3470     exit 1;
3471 fi
3472
3473 die_license_disabled() {
3474     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3475 }
3476
3477 die_license_disabled_gpl() {
3478     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3479 }
3480
3481 die_license_disabled gpl libcdio
3482 die_license_disabled gpl libutvideo
3483 die_license_disabled gpl libx264
3484 die_license_disabled gpl libxavs
3485 die_license_disabled gpl libxvid
3486 die_license_disabled gpl x11grab
3487
3488 die_license_disabled nonfree libaacplus
3489 die_license_disabled nonfree libfaac
3490 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3491 enabled gpl && die_license_disabled_gpl nonfree openssl
3492
3493 die_license_disabled version3 libopencore_amrnb
3494 die_license_disabled version3 libopencore_amrwb
3495 die_license_disabled version3 libvo_aacenc
3496 die_license_disabled version3 libvo_amrwbenc
3497
3498 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3499
3500 disabled optimizations || check_cflags -fomit-frame-pointer
3501
3502 enable_pic() {
3503     enable pic
3504     add_cppflags -DPIC
3505     add_cflags   -fPIC
3506     add_asflags  -fPIC
3507 }
3508
3509 enabled pic && enable_pic
3510
3511 check_cc <<EOF || die "Symbol mangling check failed."
3512 int ff_extern;
3513 EOF
3514 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3515 extern_prefix=${sym%%ff_extern*}
3516
3517 check_cc <<EOF && enable_weak inline_asm
3518 void foo(void) { __asm__ volatile ("" ::); }
3519 EOF
3520
3521 _restrict=
3522 for restrict_keyword in restrict __restrict__ __restrict; do
3523     check_cc <<EOF && _restrict=$restrict_keyword && break
3524 void foo(char * $restrict_keyword p);
3525 EOF
3526 done
3527
3528 check_cc <<EOF && enable attribute_packed
3529 struct { int x; } __attribute__((packed)) x;
3530 EOF
3531
3532 check_cc <<EOF && enable attribute_may_alias
3533 union { int x; } __attribute__((may_alias)) x;
3534 EOF
3535
3536 check_cc <<EOF || die "endian test failed"
3537 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3538 EOF
3539 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3540
3541 if enabled alpha; then
3542
3543     check_cflags -mieee
3544
3545 elif enabled arm; then
3546
3547     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3548 float func(float a, float b){ return a+b; }
3549 EOF
3550
3551     enabled thumb && check_cflags -mthumb || check_cflags -marm
3552     nogas=die
3553
3554     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3555         enable vfp_args
3556     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3557         case "${cross_prefix:-$cc}" in
3558             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3559             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3560 __asm__ (".eabi_attribute 28, 1");
3561 int main(void) { return 0; }
3562 EOF
3563         esac
3564         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3565     fi
3566
3567     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3568     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3569     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3570     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3571     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3572     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3573
3574     [ $target_os = linux ] ||
3575         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3576             $ARCH_EXT_LIST_ARM
3577
3578     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3579     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3580
3581     enabled_all armv6t2 shared !pic && enable_pic
3582
3583 elif enabled mips; then
3584
3585     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3586     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3587      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3588     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3589      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3590     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3591      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3592     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3593      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3594
3595 elif enabled parisc; then
3596
3597     if enabled gcc; then
3598         case $($cc -dumpversion) in
3599             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3600         esac
3601     fi
3602
3603 elif enabled ppc; then
3604
3605     enable local_aligned_8 local_aligned_16
3606
3607     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3608     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3609     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3610     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3611
3612     # AltiVec flags: The FSF version of GCC differs from the Apple version
3613     if enabled altivec; then
3614         nogas=warn
3615         check_cflags -maltivec -mabi=altivec &&
3616         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3617         check_cflags -faltivec
3618
3619         # check if our compiler supports Motorola AltiVec C API
3620         check_cc <<EOF || disable altivec
3621 $inc_altivec_h
3622 int main(void) {
3623     vector signed int v1 = (vector signed int) { 0 };
3624     vector signed int v2 = (vector signed int) { 1 };
3625     v1 = vec_add(v1, v2);
3626     return 0;
3627 }
3628 EOF
3629
3630         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3631     fi
3632
3633 elif enabled sparc; then
3634
3635     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3636
3637 elif enabled x86; then
3638
3639     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3640
3641     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3642
3643     enable local_aligned_8 local_aligned_16
3644
3645     # check whether EBP is available on x86
3646     # As 'i' is stored on the stack, this program will crash
3647     # if the base pointer is used to access it because the
3648     # base pointer is cleared in the inline assembly code.
3649     check_exec_crash <<EOF && enable ebp_available
3650 volatile int i=0;
3651 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3652 return i;
3653 EOF
3654
3655     # check whether EBX is available on x86
3656     check_inline_asm ebx_available '""::"b"(0)' &&
3657         check_inline_asm ebx_available '"":::"%ebx"'
3658
3659     # check whether xmm clobbers are supported
3660     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3661
3662     # check whether binutils is new enough to compile SSSE3/MMXEXT
3663     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3664     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3665
3666     if ! disabled_any asm mmx yasm; then
3667         if check_cmd $yasmexe --version; then
3668             enabled x86_64 && yasm_extra="-m amd64"
3669             yasm_debug="-g dwarf2"
3670         elif check_cmd nasm -v; then
3671             yasmexe=nasm
3672             yasm_debug="-g -F dwarf"
3673             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3674         fi
3675
3676         YASMFLAGS="-f $objformat $yasm_extra"
3677         enabled pic               && append YASMFLAGS "-DPIC"
3678         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3679         case "$objformat" in
3680             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3681         esac
3682
3683         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3684             die "yasm not found, use --disable-yasm for a crippled build"
3685         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3686         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3687         check_yasm "CPU amdnop" && enable cpunop
3688     fi
3689
3690     case "$cpu" in
3691         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3692             disable fast_clz
3693         ;;
3694     esac
3695
3696 fi
3697
3698 if enabled asm; then
3699     as=${gas:=$as}
3700     check_as <<EOF && enable gnu_as || \
3701         $nogas "GNU assembler not found, install gas-preprocessor"
3702 .macro m n
3703 \n: .int 0
3704 .endm
3705 m x
3706 EOF
3707 fi
3708
3709 check_ldflags -Wl,--as-needed
3710
3711 if check_func dlopen; then
3712     ldl=
3713 elif check_func dlopen -ldl; then
3714     ldl=-ldl
3715 fi
3716
3717 if ! disabled network; then
3718     check_type "sys/types.h sys/socket.h" socklen_t
3719     check_type netdb.h "struct addrinfo"
3720     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3721     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3722     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3723     check_type netinet/in.h "struct sockaddr_in6"
3724     check_type poll.h "struct pollfd"
3725     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3726     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3727     check_type netinet/sctp.h "struct sctp_event_subscribe"
3728     check_func getaddrinfo $network_extralibs