c74e43310c3fd7b96b2806da289550d300e2a5e2
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav 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 LIBAV, 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 Libav."
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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
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   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger 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-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       deprecated, does nothing
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libbs2b         enable bs2b DSP library [no]
182   --enable-libcdio         enable audio CD grabbing with libcdio
183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
184                            and libraw1394 [no]
185   --enable-libfaac         enable AAC encoding via libfaac [no]
186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
187   --enable-libfreetype     enable libfreetype [no]
188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
193   --enable-libopencv       enable video filtering via libopencv [no]
194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
195   --enable-libopus         enable Opus de/encoding via libopus [no]
196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
200   --enable-libtheora       enable Theora encoding via libtheora [no]
201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
207   --enable-libwebp         enable WebP encoding via libwebp [no]
208   --enable-libx264         enable H.264 encoding via x264 [no]
209   --enable-libx265         enable HEVC encoding via x265 [no]
210   --enable-libxavs         enable AVS encoding via xavs [no]
211   --enable-libxvid         enable Xvid encoding via xvidcore,
212                            native MPEG-4/Xvid encoder exists [no]
213   --enable-openssl         enable openssl [no]
214   --enable-x11grab         enable X11 grabbing [no]
215   --enable-zlib            enable zlib [autodetect]
216
217 Toolchain options:
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
222   --enable-cross-compile   assume a cross-compiler is used
223   --sysroot=PATH           root of cross-build tree
224   --sysinclude=PATH        location of cross-build system headers
225   --target-os=OS           compiler targets OS [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
249   --extra-version=STRING   version string suffix []
250   --optflags=OPTFLAGS      override optimization-related compiler flags
251   --build-suffix=SUFFIX    library name suffix []
252   --enable-pic             build position-independent code
253   --enable-thumb           compile for Thumb instruction set
254   --enable-lto             use link-time optimization
255
256 Advanced options (experts only):
257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
258   --disable-symver         disable symbol versioning
259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
260   --disable-safe-bitstream-reader
261                            disable buffer boundary checking in bitreaders
262                            (faster, but may crash)
263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
264   --enable-sram            allow use of on-chip SRAM
265
266 Optimization options (experts only):
267   --disable-asm            disable all assembly optimizations
268   --disable-altivec        disable AltiVec optimizations
269   --disable-amd3dnow       disable 3DNow! optimizations
270   --disable-amd3dnowext    disable 3DNow! extended optimizations
271   --disable-mmx            disable MMX optimizations
272   --disable-mmxext         disable MMXEXT optimizations
273   --disable-sse            disable SSE optimizations
274   --disable-sse2           disable SSE2 optimizations
275   --disable-sse3           disable SSE3 optimizations
276   --disable-ssse3          disable SSSE3 optimizations
277   --disable-sse4           disable SSE4 optimizations
278   --disable-sse42          disable SSE4.2 optimizations
279   --disable-avx            disable AVX optimizations
280   --disable-xop            disable XOP optimizations
281   --disable-fma3           disable FMA3 optimizations
282   --disable-fma4           disable FMA4 optimizations
283   --disable-avx2           disable AVX2 optimizations
284   --disable-armv5te        disable armv5te optimizations
285   --disable-armv6          disable armv6 optimizations
286   --disable-armv6t2        disable armv6t2 optimizations
287   --disable-vfp            disable VFP optimizations
288   --disable-neon           disable NEON optimizations
289   --disable-inline-asm     disable use of inline assembly
290   --disable-yasm           disable use of nasm/yasm assembly
291
292 Developer options (useful when working on Libav itself):
293   --disable-debug          disable debugging symbols
294   --enable-debug=LEVEL     set the debug level [$debuglevel]
295   --disable-optimizations  disable compiler optimizations
296   --enable-extra-warnings  enable more compiler warnings
297   --samples=PATH           location of test samples for FATE, if not set use
298                            \$LIBAV_SAMPLES at make invocation time.
299   --enable-neon-clobber-test check NEON registers for clobbering (should be
300                            used only for debugging purposes)
301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
302                            should be used only for debugging purposes)
303   --enable-random          randomly enable/disable components
304   --disable-random
305   --enable-random=LIST     randomly enable/disable specific components or
306   --disable-random=LIST    component groups. LIST is a comma-separated list
307                            of NAME[:PROB] entries where NAME is a component
308                            (group) and PROB the probability associated with
309                            NAME (default 0.5).
310   --random-seed=VALUE      seed value for --enable/disable-random
311
312 NOTE: Object files are built at the place where configure is launched.
313 EOF
314   exit 0
315 }
316
317 quotes='""'
318
319 log(){
320     echo "$@" >> $logfile
321 }
322
323 log_file(){
324     log BEGIN $1
325     pr -n -t $1 >> $logfile
326     log END $1
327 }
328
329 echolog(){
330     log "$@"
331     echo "$@"
332 }
333
334 warn(){
335     log "WARNING: $*"
336     WARNINGS="${WARNINGS}WARNING: $*\n"
337 }
338
339 die(){
340     echolog "$@"
341     cat <<EOF
342
343 If you think configure made a mistake, make sure you are using the latest
344 version from Git.  If the latest version fails, report the problem to the
345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
346 EOF
347     if disabled logging; then
348         cat <<EOF
349 Rerun configure with logging enabled (do not use --disable-logging), and
350 include the log this produces with your report.
351 EOF
352     else
353         cat <<EOF
354 Include the log file "$logfile" produced by configure as this will help
355 solving the problem.
356 EOF
357     fi
358     exit 1
359 }
360
361 # Avoid locale weirdness, besides we really just want to translate ASCII.
362 toupper(){
363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
364 }
365
366 tolower(){
367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
368 }
369
370 c_escape(){
371     echo "$*" | sed 's/["\\]/\\\0/g'
372 }
373
374 sh_quote(){
375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
377     echo "$v"
378 }
379
380 cleanws(){
381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
382 }
383
384 filter(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) echo $v ;; esac"
389     done
390 }
391
392 filter_out(){
393     pat=$1
394     shift
395     for v; do
396         eval "case $v in $pat) ;; *) echo $v ;; esac"
397     done
398 }
399
400 map(){
401     m=$1
402     shift
403     for v; do eval $m; done
404 }
405
406 add_suffix(){
407     suffix=$1
408     shift
409     for v; do echo ${v}${suffix}; done
410 }
411
412 set_all(){
413     value=$1
414     shift
415     for var in $*; do
416         eval $var=$value
417     done
418 }
419
420 set_weak(){
421     value=$1
422     shift
423     for var; do
424         eval : \${$var:=$value}
425     done
426 }
427
428 sanitize_var_name(){
429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
430 }
431
432 set_safe(){
433     var=$1
434     shift
435     eval $(sanitize_var_name "$var")='$*'
436 }
437
438 get_safe(){
439     eval echo \$$(sanitize_var_name "$1")
440 }
441
442 pushvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:=0}
445         eval ${pvar}_${level}="\$$pvar"
446         eval ${pvar}_level=$(($level+1))
447     done
448 }
449
450 popvar(){
451     for pvar in $*; do
452         eval level=\${${pvar}_level:-0}
453         test $level = 0 && continue
454         eval level=$(($level-1))
455         eval $pvar="\${${pvar}_${level}}"
456         eval ${pvar}_level=$level
457         eval unset ${pvar}_${level}
458     done
459 }
460
461 enable(){
462     set_all yes $*
463 }
464
465 disable(){
466     set_all no $*
467 }
468
469 enable_weak(){
470     set_weak yes $*
471 }
472
473 disable_weak(){
474     set_weak no $*
475 }
476
477 enable_safe(){
478     for var; do
479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 disable_safe(){
484     for var; do
485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
486     done
487 }
488
489 do_enable_deep(){
490     for var; do
491         enabled $var && continue
492         eval sel="\$${var}_select"
493         eval sgs="\$${var}_suggest"
494         pushvar var sgs
495         enable_deep $sel
496         popvar sgs
497         enable_deep_weak $sgs
498         popvar var
499     done
500 }
501
502 enable_deep(){
503     do_enable_deep $*
504     enable $*
505 }
506
507 enable_deep_weak(){
508     for var; do
509         disabled $var && continue
510         pushvar var
511         do_enable_deep $var
512         popvar var
513         enable_weak $var
514     done
515 }
516
517 enabled(){
518     test "${1#!}" = "$1" && op== || op=!=
519     eval test "x\$${1#!}" $op "xyes"
520 }
521
522 disabled(){
523     test "${1#!}" = "$1" && op== || op=!=
524     eval test "x\$${1#!}" $op "xno"
525 }
526
527 enabled_all(){
528     for opt; do
529         enabled $opt || return 1
530     done
531 }
532
533 disabled_all(){
534     for opt; do
535         disabled $opt || return 1
536     done
537 }
538
539 enabled_any(){
540     for opt; do
541         enabled $opt && return 0
542     done
543 }
544
545 disabled_any(){
546     for opt; do
547         disabled $opt && return 0
548     done
549     return 1
550 }
551
552 set_default(){
553     for opt; do
554         eval : \${$opt:=\$${opt}_default}
555     done
556 }
557
558 is_in(){
559     value=$1
560     shift
561     for var in $*; do
562         [ $var = $value ] && return 0
563     done
564     return 1
565 }
566
567 do_check_deps(){
568     for cfg; do
569         cfg="${cfg#!}"
570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
571         disabled ${cfg}_checking && continue
572         enable ${cfg}_checking
573         append allopts $cfg
574
575         eval dep_all="\$${cfg}_deps"
576         eval dep_any="\$${cfg}_deps_any"
577         eval dep_sel="\$${cfg}_select"
578         eval dep_sgs="\$${cfg}_suggest"
579         eval dep_ifa="\$${cfg}_if"
580         eval dep_ifn="\$${cfg}_if_any"
581
582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585
586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
588         enabled_all  $dep_all || disable $cfg
589         enabled_any  $dep_any || disable $cfg
590         disabled_any $dep_sel && disable $cfg
591
592         if enabled $cfg; then
593             enable_deep $dep_sel
594             enable_deep_weak $dep_sgs
595         fi
596
597         disable ${cfg}_checking
598     done
599 }
600
601 check_deps(){
602     unset allopts
603
604     do_check_deps "$@"
605
606     for cfg in $allopts; do
607         enabled $cfg || continue
608         eval dep_extralibs="\$${cfg}_extralibs"
609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
610     done
611 }
612
613 print_config(){
614     pfx=$1
615     files=$2
616     shift 2
617     map 'eval echo "$v \${$v:-no}"' "$@" |
618     awk "BEGIN { split(\"$files\", files) }
619         {
620             c = \"$pfx\" toupper(\$1);
621             v = \$2;
622             sub(/yes/, 1, v);
623             sub(/no/,  0, v);
624             for (f in files) {
625                 file = files[f];
626                 if (file ~ /\\.h\$/) {
627                     printf(\"#define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.asm\$/) {
629                     printf(\"%%define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.mak\$/) {
631                     n = -v ? \"\" : \"!\";
632                     printf(\"%s%s=yes\\n\", n, c) >>file;
633                 }
634             }
635         }"
636 }
637
638 print_enabled(){
639     suf=$1
640     shift
641     for v; do
642         enabled $v && printf "%s\n" ${v%$suf};
643     done
644 }
645
646 append(){
647     var=$1
648     shift
649     eval "$var=\"\$$var $*\""
650 }
651
652 prepend(){
653     var=$1
654     shift
655     eval "$var=\"$* \$$var\""
656 }
657
658 unique(){
659     var=$1
660     uniq_list=""
661     for tok in $(eval echo \$$var); do
662         uniq_list="$(filter_out $tok $uniq_list) $tok"
663     done
664     eval "$var=\"${uniq_list}\""
665 }
666
667 add_cppflags(){
668     append CPPFLAGS "$@"
669 }
670
671 add_cflags(){
672     append CFLAGS $($cflags_filter "$@")
673 }
674
675 add_asflags(){
676     append ASFLAGS $($asflags_filter "$@")
677 }
678
679 add_ldflags(){
680     append LDFLAGS $($ldflags_filter "$@")
681 }
682
683 add_ldexeflags(){
684     append LDEXEFLAGS $($ldflags_filter "$@")
685 }
686
687 add_stripflags(){
688     append STRIPFLAGS "$@"
689 }
690
691 add_extralibs(){
692     prepend extralibs $($ldflags_filter "$@")
693 }
694
695 add_host_cppflags(){
696     append host_cppflags "$@"
697 }
698
699 add_host_cflags(){
700     append host_cflags $($host_cflags_filter "$@")
701 }
702
703 add_host_ldflags(){
704     append host_ldflags $($host_ldflags_filter "$@")
705 }
706
707 add_compat(){
708     append compat_objs $1
709     shift
710     map 'add_cppflags -D$v' "$@"
711 }
712
713 check_cmd(){
714     log "$@"
715     "$@" >> $logfile 2>&1
716 }
717
718 cc_o(){
719     eval printf '%s\\n' $CC_O
720 }
721
722 cc_e(){
723     eval printf '%s\\n' $CC_E
724 }
725
726 check_cc(){
727     log check_cc "$@"
728     cat > $TMPC
729     log_file $TMPC
730     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
731 }
732
733 check_cpp(){
734     log check_cpp "$@"
735     cat > $TMPC
736     log_file $TMPC
737     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
738 }
739
740 as_o(){
741     eval printf '%s\\n' $AS_O
742 }
743
744 check_as(){
745     log check_as "$@"
746     cat > $TMPS
747     log_file $TMPS
748     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
749 }
750
751 check_inline_asm(){
752     log check_inline_asm "$@"
753     name="$1"
754     code="$2"
755     shift 2
756     disable $name
757     check_cc "$@" <<EOF && enable $name
758 void foo(void){ __asm__ volatile($code); }
759 EOF
760 }
761
762 check_insn(){
763     log check_insn "$@"
764     check_inline_asm ${1}_inline "\"$2\""
765     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
766 }
767
768 check_yasm(){
769     log check_yasm "$@"
770     echo "$1" > $TMPS
771     log_file $TMPS
772     shift 1
773     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
774 }
775
776 ld_o(){
777     eval printf '%s\\n' $LD_O
778 }
779
780 check_ld(){
781     log check_ld "$@"
782     flags=$(filter_out '-l*' "$@")
783     libs=$(filter '-l*' "$@")
784     check_cc $($cflags_filter $flags) || return
785     flags=$($ldflags_filter $flags)
786     libs=$($ldflags_filter $libs)
787     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
788 }
789
790 print_include(){
791     hdr=$1
792     test "${hdr%.h}" = "${hdr}" &&
793         echo "#include $hdr"    ||
794         echo "#include <$hdr>"
795 }
796
797 check_code(){
798     log check_code "$@"
799     check=$1
800     headers=$2
801     code=$3
802     shift 3
803     {
804         for hdr in $headers; do
805             print_include $hdr
806         done
807         echo "int main(void) { $code; return 0; }"
808     } | check_$check "$@"
809 }
810
811 check_cppflags(){
812     log check_cppflags "$@"
813     check_cc "$@" <<EOF && append CPPFLAGS "$@"
814 int x;
815 EOF
816 }
817
818 test_cflags(){
819     log test_cflags "$@"
820     set -- $($cflags_filter "$@")
821     check_cc "$@" <<EOF
822 int x;
823 EOF
824 }
825
826 check_cflags(){
827     log check_cflags "$@"
828     test_cflags "$@" && add_cflags "$@"
829 }
830
831 test_ldflags(){
832     log test_ldflags "$@"
833     check_ld "$@" <<EOF
834 int main(void){ return 0; }
835 EOF
836 }
837
838 check_ldflags(){
839     log check_ldflags "$@"
840     test_ldflags "$@" && add_ldflags "$@"
841 }
842
843 test_stripflags(){
844     log test_stripflags "$@"
845     # call check_cc to get a fresh TMPO
846     check_cc <<EOF
847 int main(void) { return 0; }
848 EOF
849     check_cmd $strip $STRIPFLAGS "$@" $TMPO
850 }
851
852 check_stripflags(){
853     log check_stripflags "$@"
854     test_stripflags "$@" && add_stripflags "$@"
855 }
856
857 check_header(){
858     log check_header "$@"
859     header=$1
860     shift
861     disable_safe $header
862     check_cpp "$@" <<EOF && enable_safe $header
863 #include <$header>
864 int x;
865 EOF
866 }
867
868 check_func(){
869     log check_func "$@"
870     func=$1
871     shift
872     disable $func
873     check_ld "$@" <<EOF && enable $func
874 extern int $func();
875 int main(void){ $func(); }
876 EOF
877 }
878
879 check_mathfunc(){
880     log check_mathfunc "$@"
881     func=$1
882     narg=$2
883     shift 2
884     test $narg = 2 && args="f, g" || args="f"
885     disable $func
886     check_ld "$@" <<EOF && enable $func
887 #include <math.h>
888 float foo(float f, float g) { return $func($args); }
889 int main(void){ return 0; }
890 EOF
891 }
892
893 check_func_headers(){
894     log check_func_headers "$@"
895     headers=$1
896     funcs=$2
897     shift 2
898     {
899         for hdr in $headers; do
900             print_include $hdr
901         done
902         for func in $funcs; do
903             echo "long check_$func(void) { return (long) $func; }"
904         done
905         echo "int main(void) { return 0; }"
906     } | check_ld "$@" && enable $funcs && enable_safe $headers
907 }
908
909 check_cpp_condition(){
910     log check_cpp_condition "$@"
911     header=$1
912     condition=$2
913     shift 2
914     check_cpp "$@" <<EOF
915 #include <$header>
916 #if !($condition)
917 #error "unsatisfied condition: $condition"
918 #endif
919 EOF
920 }
921
922 check_lib(){
923     log check_lib "$@"
924     header="$1"
925     func="$2"
926     shift 2
927     check_header $header && check_func $func "$@" && add_extralibs "$@"
928 }
929
930 check_lib2(){
931     log check_lib2 "$@"
932     headers="$1"
933     funcs="$2"
934     shift 2
935     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
936 }
937
938 check_pkg_config(){
939     log check_pkg_config "$@"
940     pkg="$1"
941     headers="$2"
942     funcs="$3"
943     shift 3
944     check_cmd $pkg_config --exists --print-errors $pkg || return
945     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
946     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
947     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
948         set_safe ${pkg}_cflags $pkg_cflags   &&
949         set_safe ${pkg}_libs   $pkg_libs
950 }
951
952 check_exec(){
953     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
954 }
955
956 check_exec_crash(){
957     code=$(cat)
958
959     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
960     # are safe but may not be available everywhere.  Thus we use
961     # raise(SIGTERM) instead.  The check is run in a subshell so we
962     # can redirect the "Terminated" message from the shell.  SIGBUS
963     # is not defined by standard C so it is used conditionally.
964
965     (check_exec "$@") >> $logfile 2>&1 <<EOF
966 #include <signal.h>
967 static void sighandler(int sig){
968     raise(SIGTERM);
969 }
970 int foo(void){
971     $code
972 }
973 int (*func_ptr)(void) = foo;
974 int main(void){
975     signal(SIGILL, sighandler);
976     signal(SIGFPE, sighandler);
977     signal(SIGSEGV, sighandler);
978 #ifdef SIGBUS
979     signal(SIGBUS, sighandler);
980 #endif
981     return func_ptr();
982 }
983 EOF
984 }
985
986 check_type(){
987     log check_type "$@"
988     headers=$1
989     type=$2
990     shift 2
991     disable_safe "$type"
992     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
993 }
994
995 check_struct(){
996     log check_struct "$@"
997     headers=$1
998     struct=$2
999     member=$3
1000     shift 3
1001     disable_safe "${struct}_${member}"
1002     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1003         enable_safe "${struct}_${member}"
1004 }
1005
1006 check_builtin(){
1007     log check_builtin "$@"
1008     name=$1
1009     headers=$2
1010     builtin=$3
1011     shift 3
1012     disable "$name"
1013     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1014 }
1015
1016 check_compile_assert(){
1017     log check_compile_assert "$@"
1018     name=$1
1019     headers=$2
1020     condition=$3
1021     shift 3
1022     disable "$name"
1023     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_pkg_config(){
1043     pkg="$1"
1044     check_pkg_config "$@" || die "ERROR: $pkg not found"
1045     add_cflags    $(get_safe ${pkg}_cflags)
1046     add_extralibs $(get_safe ${pkg}_libs)
1047 }
1048
1049 hostcc_e(){
1050     eval printf '%s\\n' $HOSTCC_E
1051 }
1052
1053 hostcc_o(){
1054     eval printf '%s\\n' $HOSTCC_O
1055 }
1056
1057 check_host_cc(){
1058     log check_host_cc "$@"
1059     cat > $TMPC
1060     log_file $TMPC
1061     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1062 }
1063
1064 check_host_cpp(){
1065     log check_host_cpp "$@"
1066     cat > $TMPC
1067     log_file $TMPC
1068     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1069 }
1070
1071 check_host_cppflags(){
1072     log check_host_cppflags "$@"
1073     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1074 int x;
1075 EOF
1076 }
1077
1078 check_host_cflags(){
1079     log check_host_cflags "$@"
1080     set -- $($host_cflags_filter "$@")
1081     check_host_cc "$@" <<EOF && append host_cflags "$@"
1082 int x;
1083 EOF
1084 }
1085
1086 check_host_cpp_condition(){
1087     log check_host_cpp_condition "$@"
1088     header=$1
1089     condition=$2
1090     shift 2
1091     check_host_cpp "$@" <<EOF
1092 #include <$header>
1093 #if !($condition)
1094 #error "unsatisfied condition: $condition"
1095 #endif
1096 EOF
1097 }
1098
1099 apply(){
1100     file=$1
1101     shift
1102     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1103 }
1104
1105 cp_if_changed(){
1106     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1107     mkdir -p "$(dirname $2)"
1108     $cp_f "$1" "$2"
1109 }
1110
1111 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1112 # system-dependent things.
1113
1114 COMPONENT_LIST="
1115     bsfs
1116     decoders
1117     demuxers
1118     encoders
1119     filters
1120     hwaccels
1121     indevs
1122     muxers
1123     outdevs
1124     parsers
1125     protocols
1126 "
1127
1128 EXAMPLE_LIST="
1129     avcodec_example
1130     filter_audio_example
1131     metadata_example
1132     output_example
1133     transcode_aac_example
1134 "
1135
1136 EXTERNAL_LIBRARY_LIST="
1137     avisynth
1138     bzlib
1139     frei0r
1140     gnutls
1141     libbs2b
1142     libcdio
1143     libdc1394
1144     libfaac
1145     libfdk_aac
1146     libfontconfig
1147     libfreetype
1148     libgsm
1149     libilbc
1150     libmp3lame
1151     libopencore_amrnb
1152     libopencore_amrwb
1153     libopencv
1154     libopenjpeg
1155     libopus
1156     libpulse
1157     librtmp
1158     libschroedinger
1159     libspeex
1160     libtheora
1161     libtwolame
1162     libvo_aacenc
1163     libvo_amrwbenc
1164     libvorbis
1165     libvpx
1166     libwavpack
1167     libwebp
1168     libx264
1169     libx265
1170     libxavs
1171     libxvid
1172     openssl
1173     x11grab
1174     zlib
1175 "
1176
1177 FEATURE_LIST="
1178     gray
1179     hardcoded_tables
1180     runtime_cpudetect
1181     safe_bitstream_reader
1182     shared
1183     small
1184     sram
1185     static
1186     swscale_alpha
1187 "
1188
1189 HWACCEL_LIST="
1190     dxva2
1191     vaapi
1192     vda
1193     vdpau
1194 "
1195
1196 LIBRARY_LIST="
1197     avcodec
1198     avdevice
1199     avfilter
1200     avformat
1201     avresample
1202     avutil
1203     swscale
1204 "
1205
1206 LICENSE_LIST="
1207     gpl
1208     nonfree
1209     version3
1210 "
1211
1212 PROGRAM_LIST="
1213     avconv
1214     avplay
1215     avprobe
1216 "
1217
1218 SUBSYSTEM_LIST="
1219     dct
1220     doc
1221     error_resilience
1222     fft
1223     lsp
1224     lzo
1225     mdct
1226     network
1227     rdft
1228 "
1229
1230 CONFIG_LIST="
1231     $COMPONENT_LIST
1232     $EXAMPLE_LIST
1233     $EXTERNAL_LIBRARY_LIST
1234     $FEATURE_LIST
1235     $HWACCEL_LIST
1236     $LICENSE_LIST
1237     $LIBRARY_LIST
1238     $PROGRAM_LIST
1239     $SUBSYSTEM_LIST
1240     memalign_hack
1241     neon_clobber_test
1242     pic
1243     pod2man
1244     texi2html
1245     thumb
1246     xmm_clobber_test
1247 "
1248
1249 THREADS_LIST="
1250     pthreads
1251     w32threads
1252 "
1253
1254 ATOMICS_LIST="
1255     atomics_gcc
1256     atomics_suncc
1257     atomics_win32
1258 "
1259
1260 ARCH_LIST="
1261     aarch64
1262     alpha
1263     arm
1264     avr32
1265     avr32_ap
1266     avr32_uc
1267     bfin
1268     ia64
1269     m68k
1270     mips
1271     mips64
1272     parisc
1273     ppc
1274     ppc64
1275     s390
1276     sh4
1277     sparc
1278     sparc64
1279     tilegx
1280     tilepro
1281     tomi
1282     x86
1283     x86_32
1284     x86_64
1285 "
1286
1287 ARCH_EXT_LIST_ARM="
1288     armv5te
1289     armv6
1290     armv6t2
1291     armv8
1292     neon
1293     vfp
1294     vfpv3
1295 "
1296
1297 ARCH_EXT_LIST_X86_SIMD="
1298     amd3dnow
1299     amd3dnowext
1300     avx
1301     avx2
1302     fma3
1303     fma4
1304     mmx
1305     mmxext
1306     sse
1307     sse2
1308     sse3
1309     sse4
1310     sse42
1311     ssse3
1312     xop
1313 "
1314
1315 ARCH_EXT_LIST_PPC="
1316     altivec
1317     dcbzl
1318     ldbrx
1319     ppc4xx
1320 "
1321
1322 ARCH_EXT_LIST_X86="
1323     $ARCH_EXT_LIST_X86_SIMD
1324     cpunop
1325     i686
1326 "
1327
1328 ARCH_EXT_LIST="
1329     $ARCH_EXT_LIST_ARM
1330     $ARCH_EXT_LIST_PPC
1331     $ARCH_EXT_LIST_X86
1332     loongson
1333     vis
1334 "
1335
1336 ARCH_FEATURES="
1337     aligned_stack
1338     fast_64bit
1339     fast_clz
1340     fast_cmov
1341     local_aligned_8
1342     local_aligned_16
1343 "
1344
1345 BUILTIN_LIST="
1346     atomic_cas_ptr
1347     machine_rw_barrier
1348     MemoryBarrier
1349     mm_empty
1350     rdtsc
1351     sync_val_compare_and_swap
1352 "
1353 HAVE_LIST_CMDLINE="
1354     inline_asm
1355     symver
1356     yasm
1357 "
1358
1359 HAVE_LIST_PUB="
1360     bigendian
1361     fast_unaligned
1362 "
1363
1364 HEADERS_LIST="
1365     alsa_asoundlib_h
1366     altivec_h
1367     arpa_inet_h
1368     cdio_paranoia_h
1369     cdio_paranoia_paranoia_h
1370     dev_bktr_ioctl_bt848_h
1371     dev_bktr_ioctl_meteor_h
1372     dev_ic_bt8xx_h
1373     dev_video_bktr_ioctl_bt848_h
1374     dev_video_meteor_ioctl_meteor_h
1375     direct_h
1376     dlfcn_h
1377     dxva_h
1378     gsm_h
1379     io_h
1380     mach_mach_time_h
1381     machine_ioctl_bt848_h
1382     machine_ioctl_meteor_h
1383     malloc_h
1384     poll_h
1385     sndio_h
1386     soundcard_h
1387     sys_mman_h
1388     sys_param_h
1389     sys_resource_h
1390     sys_select_h
1391     sys_soundcard_h
1392     sys_time_h
1393     sys_un_h
1394     sys_videoio_h
1395     unistd_h
1396     windows_h
1397     winsock2_h
1398 "
1399
1400 MATH_FUNCS="
1401     atanf
1402     atan2f
1403     cbrtf
1404     cosf
1405     exp2
1406     exp2f
1407     expf
1408     isinf
1409     isnan
1410     ldexpf
1411     llrint
1412     llrintf
1413     log2
1414     log2f
1415     log10f
1416     lrint
1417     lrintf
1418     powf
1419     rint
1420     round
1421     roundf
1422     sinf
1423     trunc
1424     truncf
1425 "
1426
1427 SYSTEM_FUNCS="
1428     aligned_malloc
1429     closesocket
1430     CommandLineToArgvW
1431     CoTaskMemFree
1432     CryptGenRandom
1433     dlopen
1434     fcntl
1435     flt_lim
1436     fork
1437     getaddrinfo
1438     gethrtime
1439     getopt
1440     GetProcessAffinityMask
1441     GetProcessMemoryInfo
1442     GetProcessTimes
1443     getrusage
1444     getservbyport
1445     GetSystemTimeAsFileTime
1446     gettimeofday
1447     inet_aton
1448     isatty
1449     jack_port_get_latency_range
1450     localtime_r
1451     mach_absolute_time
1452     MapViewOfFile
1453     memalign
1454     mkstemp
1455     mmap
1456     mprotect
1457     nanosleep
1458     posix_memalign
1459     sched_getaffinity
1460     SetConsoleTextAttribute
1461     setmode
1462     setrlimit
1463     Sleep
1464     strerror_r
1465     strptime
1466     sysconf
1467     sysctl
1468     usleep
1469     VirtualAlloc
1470 "
1471
1472 TOOLCHAIN_FEATURES="
1473     as_dn_directive
1474     as_func
1475     asm_mod_q
1476     attribute_may_alias
1477     attribute_packed
1478     ebp_available
1479     ebx_available
1480     gnu_as
1481     ibm_asm
1482     inline_asm_labels
1483     pragma_deprecated
1484     symver_asm_label
1485     symver_gnu_asm
1486     vfp_args
1487     xform_asm
1488     xmm_clobbers
1489 "
1490
1491 TYPES_LIST="
1492     socklen_t
1493     struct_addrinfo
1494     struct_group_source_req
1495     struct_ip_mreq_source
1496     struct_ipv6_mreq
1497     struct_pollfd
1498     struct_rusage_ru_maxrss
1499     struct_sockaddr_in6
1500     struct_sockaddr_sa_len
1501     struct_sockaddr_storage
1502     struct_v4l2_frmivalenum_discrete
1503 "
1504
1505 HAVE_LIST="
1506     $ARCH_EXT_LIST
1507     $(add_suffix _external $ARCH_EXT_LIST)
1508     $(add_suffix _inline   $ARCH_EXT_LIST)
1509     $ARCH_FEATURES
1510     $ATOMICS_LIST
1511     $BUILTIN_LIST
1512     $HAVE_LIST_CMDLINE
1513     $HAVE_LIST_PUB
1514     $HEADERS_LIST
1515     $MATH_FUNCS
1516     $SYSTEM_FUNCS
1517     $THREADS_LIST
1518     $TOOLCHAIN_FEATURES
1519     $TYPES_LIST
1520     atomics_native
1521     dos_paths
1522     dxva2_lib
1523     libc_msvcrt
1524     libdc1394_1
1525     libdc1394_2
1526     sdl
1527     threads
1528     vdpau_x11
1529     xlib
1530 "
1531
1532 # options emitted with CONFIG_ prefix but not available on the command line
1533 CONFIG_EXTRA="
1534     aandcttables
1535     ac3dsp
1536     audio_frame_queue
1537     audiodsp
1538     blockdsp
1539     bswapdsp
1540     cabac
1541     dvprofile
1542     fdctdsp
1543     gcrypt
1544     golomb
1545     gplv3
1546     h263dsp
1547     h264chroma
1548     h264dsp
1549     h264pred
1550     h264qpel
1551     hpeldsp
1552     huffman
1553     huffyuvdsp
1554     huffyuvencdsp
1555     idctdsp
1556     iirfilter
1557     intrax8
1558     lgplv3
1559     lpc
1560     me_cmp
1561     mpeg_er
1562     mpegaudio
1563     mpegaudiodsp
1564     mpegvideo
1565     mpegvideoenc
1566     nettle
1567     pixblockdsp
1568     qpeldsp
1569     rangecoder
1570     riffdec
1571     riffenc
1572     rtpdec
1573     rtpenc_chain
1574     sinewin
1575     tpeldsp
1576     videodsp
1577     vp3dsp
1578 "
1579
1580 CMDLINE_SELECT="
1581     $ARCH_EXT_LIST
1582     $CONFIG_LIST
1583     $HAVE_LIST_CMDLINE
1584     $THREADS_LIST
1585     asm
1586     cross_compile
1587     debug
1588     extra_warnings
1589     logging
1590     lto
1591     optimizations
1592 "
1593
1594 PATHS_LIST="
1595     bindir
1596     datadir
1597     docdir
1598     incdir
1599     libdir
1600     mandir
1601     prefix
1602     shlibdir
1603 "
1604
1605 CMDLINE_SET="
1606     $PATHS_LIST
1607     ar
1608     arch
1609     as
1610     build_suffix
1611     cc
1612     cpu
1613     cross_prefix
1614     dep_cc
1615     extra_version
1616     host_cc
1617     host_cflags
1618     host_ld
1619     host_ldflags
1620     host_libs
1621     host_os
1622     ld
1623     logfile
1624     malloc_prefix
1625     nm
1626     optflags
1627     pkg_config
1628     pkg_config_flags
1629     random_seed
1630     samples
1631     sysinclude
1632     sysroot
1633     target_exec
1634     target_os
1635     target_path
1636     target_samples
1637     toolchain
1638 "
1639
1640 CMDLINE_APPEND="
1641     extra_cflags
1642     host_cppflags
1643 "
1644
1645 # code dependency declarations
1646
1647 # architecture extensions
1648
1649 armv5te_deps="arm"
1650 armv6_deps="arm"
1651 armv6t2_deps="arm"
1652 armv8_deps="aarch64"
1653 neon_deps_any="aarch64 arm"
1654 vfp_deps_any="aarch64 arm"
1655 vfpv3_deps="vfp"
1656
1657 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1658
1659 altivec_deps="ppc"
1660 ppc4xx_deps="ppc"
1661
1662 cpunop_deps="i686"
1663 x86_64_select="i686"
1664 x86_64_suggest="fast_cmov"
1665
1666 amd3dnow_deps="mmx"
1667 amd3dnowext_deps="amd3dnow"
1668 i686_deps="x86"
1669 mmx_deps="x86"
1670 mmxext_deps="mmx"
1671 sse_deps="mmxext"
1672 sse2_deps="sse"
1673 sse3_deps="sse2"
1674 ssse3_deps="sse3"
1675 sse4_deps="ssse3"
1676 sse42_deps="sse4"
1677 avx_deps="sse42"
1678 xop_deps="avx"
1679 fma3_deps="avx"
1680 fma4_deps="avx"
1681 avx2_deps="avx"
1682
1683 mmx_external_deps="yasm"
1684 mmx_inline_deps="inline_asm"
1685 mmx_suggest="mmx_external mmx_inline"
1686
1687 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1688     eval dep=\$${ext}_deps
1689     eval ${ext}_external_deps='"${dep}_external"'
1690     eval ${ext}_inline_deps='"${dep}_inline"'
1691     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1692 done
1693
1694 aligned_stack_if_any="aarch64 ppc x86"
1695 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1696 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1697 fast_unaligned_if_any="aarch64 ppc x86"
1698
1699 need_memalign="altivec neon sse"
1700
1701 # system capabilities
1702 log2_deps="!libc_msvcrt"
1703
1704 symver_if_any="symver_asm_label symver_gnu_asm"
1705
1706 # threading support
1707 atomics_gcc_if="sync_val_compare_and_swap"
1708 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1709 atomics_win32_if="MemoryBarrier"
1710 atomics_native_if_any="$ATOMICS_LIST"
1711 w32threads_deps="atomics_native"
1712 threads_if_any="$THREADS_LIST"
1713
1714 # subsystems
1715 dct_select="rdft"
1716 error_resilience_select="me_cmp"
1717 intrax8_select="error_resilience"
1718 mdct_select="fft"
1719 rdft_select="fft"
1720 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1721 mpeg_er_select="error_resilience"
1722 mpegaudio_select="mpegaudiodsp"
1723 mpegaudiodsp_select="dct"
1724 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1725 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1726
1727 # decoders / encoders
1728 aac_decoder_select="mdct sinewin"
1729 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1730 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1731 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1732 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1733 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1734 aic_decoder_select="golomb idctdsp"
1735 alac_encoder_select="lpc"
1736 als_decoder_select="bswapdsp"
1737 amrnb_decoder_select="lsp"
1738 amrwb_decoder_select="lsp"
1739 amv_decoder_select="sp5x_decoder"
1740 ape_decoder_select="bswapdsp"
1741 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1742 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1743 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1744 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1745 atrac1_decoder_select="mdct sinewin"
1746 atrac3_decoder_select="mdct"
1747 atrac3p_decoder_select="mdct sinewin"
1748 bink_decoder_select="blockdsp hpeldsp"
1749 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1750 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1751 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1752 cllc_decoder_select="bswapdsp"
1753 comfortnoise_encoder_select="lpc"
1754 cook_decoder_select="audiodsp mdct sinewin"
1755 cscd_decoder_select="lzo"
1756 cscd_decoder_suggest="zlib"
1757 dca_decoder_select="mdct"
1758 dnxhd_decoder_select="blockdsp idctdsp"
1759 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1760 dvvideo_decoder_select="dvprofile idctdsp"
1761 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1762 dxa_decoder_deps="zlib"
1763 eac3_decoder_select="ac3_decoder"
1764 eac3_encoder_select="ac3_encoder"
1765 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1766 eatgq_decoder_select="aandcttables idctdsp"
1767 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1768 exr_decoder_deps="zlib"
1769 ffv1_decoder_select="golomb rangecoder"
1770 ffv1_encoder_select="rangecoder"
1771 ffvhuff_decoder_select="huffyuv_decoder"
1772 ffvhuff_encoder_select="huffyuv_encoder"
1773 fic_decoder_select="golomb"
1774 flac_decoder_select="golomb"
1775 flac_encoder_select="bswapdsp golomb lpc"
1776 flashsv_decoder_deps="zlib"
1777 flashsv_encoder_deps="zlib"
1778 flashsv2_decoder_deps="zlib"
1779 flv_decoder_select="h263_decoder"
1780 flv_encoder_select="h263_encoder"
1781 fourxm_decoder_select="blockdsp bswapdsp"
1782 fraps_decoder_select="bswapdsp huffman"
1783 g2m_decoder_deps="zlib"
1784 g2m_decoder_select="blockdsp idctdsp"
1785 h261_decoder_select="mpeg_er mpegvideo"
1786 h261_encoder_select="aandcttables mpegvideoenc"
1787 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1788 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1789 h263i_decoder_select="h263_decoder"
1790 h263p_encoder_select="h263_encoder"
1791 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1792 h264_decoder_suggest="error_resilience"
1793 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1794 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1795 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1796 iac_decoder_select="imc_decoder"
1797 imc_decoder_select="bswapdsp fft mdct sinewin"
1798 indeo3_decoder_select="hpeldsp"
1799 interplay_video_decoder_select="hpeldsp"
1800 jpegls_decoder_select="golomb mjpeg_decoder"
1801 jpegls_encoder_select="golomb"
1802 jv_decoder_select="blockdsp"
1803 lagarith_decoder_select="huffyuvdsp"
1804 ljpeg_encoder_select="aandcttables idctdsp"
1805 loco_decoder_select="golomb"
1806 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1807 metasound_decoder_select="lsp mdct sinewin"
1808 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1809 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1810 mjpeg_encoder_select="aandcttables mpegvideoenc"
1811 mjpegb_decoder_select="mjpeg_decoder"
1812 mlp_decoder_select="mlp_parser"
1813 motionpixels_decoder_select="bswapdsp"
1814 mp1_decoder_select="mpegaudio"
1815 mp1float_decoder_select="mpegaudio"
1816 mp2_decoder_select="mpegaudio"
1817 mp2float_decoder_select="mpegaudio"
1818 mp3_decoder_select="mpegaudio"
1819 mp3adu_decoder_select="mpegaudio"
1820 mp3adufloat_decoder_select="mpegaudio"
1821 mp3float_decoder_select="mpegaudio"
1822 mp3on4_decoder_select="mpegaudio"
1823 mp3on4float_decoder_select="mpegaudio"
1824 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1825 mpc8_decoder_select="mpegaudiodsp"
1826 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1827 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1828 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1829 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1830 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1831 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1832 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1833 mpeg4_encoder_select="h263_encoder"
1834 msmpeg4v1_decoder_select="h263_decoder"
1835 msmpeg4v2_decoder_select="h263_decoder"
1836 msmpeg4v2_encoder_select="h263_encoder"
1837 msmpeg4v3_decoder_select="h263_decoder"
1838 msmpeg4v3_encoder_select="h263_encoder"
1839 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1840 mxpeg_decoder_select="mjpeg_decoder"
1841 nellymoser_decoder_select="mdct sinewin"
1842 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1843 nuv_decoder_select="idctdsp lzo"
1844 on2avc_decoder_select="mdct"
1845 opus_decoder_deps="avresample"
1846 png_decoder_deps="zlib"
1847 png_encoder_deps="zlib"
1848 png_encoder_select="huffyuvencdsp"
1849 prores_decoder_select="idctdsp"
1850 prores_encoder_select="fdctdsp"
1851 qcelp_decoder_select="lsp"
1852 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1853 ra_144_encoder_select="audio_frame_queue lpc"
1854 ralf_decoder_select="golomb"
1855 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1856 rv10_encoder_select="h263_encoder"
1857 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1858 rv20_encoder_select="h263_encoder"
1859 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1860 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1861 shorten_decoder_select="golomb"
1862 sipr_decoder_select="lsp"
1863 sp5x_decoder_select="mjpeg_decoder"
1864 svq1_decoder_select="hpeldsp"
1865 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1866 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1867 svq3_decoder_suggest="zlib"
1868 tak_decoder_select="audiodsp"
1869 theora_decoder_select="vp3_decoder"
1870 thp_decoder_select="mjpeg_decoder"
1871 tiff_decoder_suggest="zlib"
1872 tiff_encoder_suggest="zlib"
1873 truehd_decoder_select="mlp_decoder"
1874 truemotion2_decoder_select="bswapdsp"
1875 truespeech_decoder_select="bswapdsp"
1876 tscc_decoder_deps="zlib"
1877 twinvq_decoder_select="mdct lsp sinewin"
1878 utvideo_decoder_select="bswapdsp"
1879 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1880 vble_decoder_select="huffyuvdsp"
1881 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1882 vc1image_decoder_select="vc1_decoder"
1883 vorbis_decoder_select="mdct"
1884 vorbis_encoder_select="mdct"
1885 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1886 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1887 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1888 vp6a_decoder_select="vp6_decoder"
1889 vp6f_decoder_select="vp6_decoder"
1890 vp7_decoder_select="h264pred videodsp"
1891 vp8_decoder_select="h264pred videodsp"
1892 vp9_decoder_select="videodsp"
1893 webp_decoder_select="vp8_decoder"
1894 wmapro_decoder_select="mdct sinewin"
1895 wmav1_decoder_select="mdct sinewin"
1896 wmav1_encoder_select="mdct sinewin"
1897 wmav2_decoder_select="mdct sinewin"
1898 wmav2_encoder_select="mdct sinewin"
1899 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1900 wmv1_decoder_select="h263_decoder"
1901 wmv1_encoder_select="h263_encoder"
1902 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1903 wmv2_encoder_select="h263_encoder"
1904 wmv3_decoder_select="vc1_decoder"
1905 wmv3image_decoder_select="wmv3_decoder"
1906 zerocodec_decoder_deps="zlib"
1907 zlib_decoder_deps="zlib"
1908 zlib_encoder_deps="zlib"
1909 zmbv_decoder_deps="zlib"
1910 zmbv_encoder_deps="zlib"
1911
1912 # hardware accelerators
1913 dxva2_deps="dxva2api_h"
1914 vaapi_deps="va_va_h"
1915 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1916 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1917 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1918
1919 h263_vaapi_hwaccel_deps="vaapi"
1920 h263_vaapi_hwaccel_select="h263_decoder"
1921 h263_vdpau_hwaccel_deps="vdpau"
1922 h263_vdpau_hwaccel_select="h263_decoder"
1923 h264_dxva2_hwaccel_deps="dxva2"
1924 h264_dxva2_hwaccel_select="h264_decoder"
1925 h264_vaapi_hwaccel_deps="vaapi"
1926 h264_vaapi_hwaccel_select="h264_decoder"
1927 h264_vda_hwaccel_deps="vda"
1928 h264_vda_hwaccel_select="h264_decoder"
1929 h264_vda_old_hwaccel_deps="vda"
1930 h264_vda_old_hwaccel_select="h264_decoder"
1931 h264_vdpau_hwaccel_deps="vdpau"
1932 h264_vdpau_hwaccel_select="h264_decoder"
1933 mpeg1_vdpau_hwaccel_deps="vdpau"
1934 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1935 mpeg2_dxva2_hwaccel_deps="dxva2"
1936 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1937 mpeg2_vaapi_hwaccel_deps="vaapi"
1938 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1939 mpeg2_vdpau_hwaccel_deps="vdpau"
1940 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1941 mpeg4_vaapi_hwaccel_deps="vaapi"
1942 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1943 mpeg4_vdpau_hwaccel_deps="vdpau"
1944 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1945 vc1_dxva2_hwaccel_deps="dxva2"
1946 vc1_dxva2_hwaccel_select="vc1_decoder"
1947 vc1_vaapi_hwaccel_deps="vaapi"
1948 vc1_vaapi_hwaccel_select="vc1_decoder"
1949 vc1_vdpau_hwaccel_deps="vdpau"
1950 vc1_vdpau_hwaccel_select="vc1_decoder"
1951 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1952 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1953 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1954
1955 # parsers
1956 h264_parser_select="h264_decoder"
1957 mpegvideo_parser_select="mpegvideo"
1958 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1959 vc1_parser_select="mpegvideo"
1960
1961 # external libraries
1962 libfaac_encoder_deps="libfaac"
1963 libfaac_encoder_select="audio_frame_queue"
1964 libfdk_aac_decoder_deps="libfdk_aac"
1965 libfdk_aac_encoder_deps="libfdk_aac"
1966 libfdk_aac_encoder_select="audio_frame_queue"
1967 libgsm_decoder_deps="libgsm"
1968 libgsm_encoder_deps="libgsm"
1969 libgsm_ms_decoder_deps="libgsm"
1970 libgsm_ms_encoder_deps="libgsm"
1971 libilbc_decoder_deps="libilbc"
1972 libilbc_encoder_deps="libilbc"
1973 libmp3lame_encoder_deps="libmp3lame"
1974 libmp3lame_encoder_select="audio_frame_queue"
1975 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1976 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1977 libopencore_amrnb_encoder_select="audio_frame_queue"
1978 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1979 libopenjpeg_decoder_deps="libopenjpeg"
1980 libopenjpeg_encoder_deps="libopenjpeg"
1981 libopus_decoder_deps="libopus"
1982 libopus_encoder_deps="libopus"
1983 libopus_encoder_select="audio_frame_queue"
1984 libschroedinger_decoder_deps="libschroedinger"
1985 libschroedinger_encoder_deps="libschroedinger"
1986 libspeex_decoder_deps="libspeex"
1987 libspeex_encoder_deps="libspeex"
1988 libspeex_encoder_select="audio_frame_queue"
1989 libtheora_encoder_deps="libtheora"
1990 libtwolame_encoder_deps="libtwolame"
1991 libvo_aacenc_encoder_deps="libvo_aacenc"
1992 libvo_aacenc_encoder_select="audio_frame_queue"
1993 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1994 libvorbis_encoder_deps="libvorbis"
1995 libvorbis_encoder_select="audio_frame_queue"
1996 libvpx_vp8_decoder_deps="libvpx"
1997 libvpx_vp8_encoder_deps="libvpx"
1998 libvpx_vp9_decoder_deps="libvpx"
1999 libvpx_vp9_encoder_deps="libvpx"
2000 libwavpack_encoder_deps="libwavpack"
2001 libwebp_encoder_deps="libwebp"
2002 libx264_encoder_deps="libx264"
2003 libx265_encoder_deps="libx265"
2004 libxavs_encoder_deps="libxavs"
2005 libxvid_encoder_deps="libxvid"
2006
2007 # demuxers / muxers
2008 ac3_demuxer_select="ac3_parser"
2009 asf_demuxer_select="riffdec"
2010 asf_muxer_select="riffenc"
2011 asf_stream_muxer_select="asf_muxer"
2012 avi_demuxer_select="riffdec"
2013 avi_muxer_select="riffenc"
2014 avisynth_demuxer_deps="avisynth"
2015 avisynth_demuxer_select="riffdec"
2016 caf_demuxer_select="riffdec"
2017 dirac_demuxer_select="dirac_parser"
2018 dv_demuxer_select="dvprofile"
2019 dv_muxer_select="dvprofile"
2020 dxa_demuxer_select="riffdec"
2021 eac3_demuxer_select="ac3_parser"
2022 f4v_muxer_select="mov_muxer"
2023 flac_demuxer_select="flac_parser"
2024 hds_muxer_select="flv_muxer"
2025 hls_muxer_select="mpegts_muxer"
2026 ipod_muxer_select="mov_muxer"
2027 ismv_muxer_select="mov_muxer"
2028 matroska_audio_muxer_select="matroska_muxer"
2029 matroska_demuxer_select="riffdec"
2030 matroska_demuxer_suggest="bzlib lzo zlib"
2031 matroska_muxer_select="riffenc"
2032 mmf_muxer_select="riffenc"
2033 mov_demuxer_select="riffdec"
2034 mov_demuxer_suggest="zlib"
2035 mov_muxer_select="riffenc rtpenc_chain"
2036 mp3_demuxer_select="mpegaudio_parser"
2037 mp4_muxer_select="mov_muxer"
2038 mpegts_muxer_select="adts_muxer latm_muxer"
2039 mpegtsraw_demuxer_select="mpegts_demuxer"
2040 mxf_d10_muxer_select="mxf_muxer"
2041 nut_muxer_select="riffenc"
2042 nuv_demuxer_select="riffdec"
2043 ogg_demuxer_select="golomb"
2044 psp_muxer_select="mov_muxer"
2045 rtp_demuxer_select="sdp_demuxer"
2046 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2047 rtsp_demuxer_select="http_protocol rtpdec"
2048 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2049 sap_demuxer_select="sdp_demuxer"
2050 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2051 sdp_demuxer_select="rtpdec"
2052 smoothstreaming_muxer_select="ismv_muxer"
2053 spdif_muxer_select="aac_parser"
2054 tak_demuxer_select="tak_parser"
2055 tg2_muxer_select="mov_muxer"
2056 tgp_muxer_select="mov_muxer"
2057 w64_demuxer_select="wav_demuxer"
2058 wav_demuxer_select="riffdec"
2059 wav_muxer_select="riffenc"
2060 webm_muxer_select="riffenc"
2061 wtv_demuxer_select="riffdec"
2062 xmv_demuxer_select="riffdec"
2063 xwma_demuxer_select="riffdec"
2064
2065 # indevs / outdevs
2066 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2067 alsa_outdev_deps="alsa_asoundlib_h"
2068 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2069 dv1394_indev_deps="dv1394"
2070 dv1394_indev_select="dv_demuxer"
2071 fbdev_indev_deps="linux_fb_h"
2072 jack_indev_deps="jack_jack_h pthreads"
2073 libcdio_indev_deps="libcdio"
2074 libdc1394_indev_deps="libdc1394"
2075 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2076 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2077 pulse_indev_deps="libpulse"
2078 sndio_indev_deps="sndio_h"
2079 sndio_outdev_deps="sndio_h"
2080 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2081 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2082 vfwcap_indev_extralibs="-lavicap32"
2083 x11grab_indev_deps="x11grab XShmCreateImage"
2084
2085 # protocols
2086 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2087 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2088 ffrtmpcrypt_protocol_select="tcp_protocol"
2089 ffrtmphttp_protocol_deps="!librtmp_protocol"
2090 ffrtmphttp_protocol_select="http_protocol"
2091 gopher_protocol_select="network"
2092 http_protocol_select="tcp_protocol"
2093 httpproxy_protocol_select="tcp_protocol"
2094 https_protocol_select="tls_protocol"
2095 librtmp_protocol_deps="librtmp"
2096 librtmpe_protocol_deps="librtmp"
2097 librtmps_protocol_deps="librtmp"
2098 librtmpt_protocol_deps="librtmp"
2099 librtmpte_protocol_deps="librtmp"
2100 mmsh_protocol_select="http_protocol"
2101 mmst_protocol_select="network"
2102 rtmp_protocol_deps="!librtmp_protocol"
2103 rtmp_protocol_select="tcp_protocol"
2104 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2105 rtmps_protocol_deps="!librtmp_protocol"
2106 rtmps_protocol_select="tls_protocol"
2107 rtmpt_protocol_select="ffrtmphttp_protocol"
2108 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2109 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2110 rtp_protocol_select="udp_protocol"
2111 sctp_protocol_deps="struct_sctp_event_subscribe"
2112 sctp_protocol_select="network"
2113 srtp_protocol_select="rtp_protocol"
2114 tcp_protocol_select="network"
2115 tls_protocol_deps_any="openssl gnutls"
2116 tls_protocol_select="tcp_protocol"
2117 udp_protocol_select="network"
2118 unix_protocol_deps="sys_un_h"
2119 unix_protocol_select="network"
2120
2121 # filters
2122 blackframe_filter_deps="gpl"
2123 boxblur_filter_deps="gpl"
2124 bs2b_filter_deps="libbs2b"
2125 cropdetect_filter_deps="gpl"
2126 delogo_filter_deps="gpl"
2127 drawtext_filter_deps="libfreetype"
2128 frei0r_filter_deps="frei0r dlopen"
2129 frei0r_filter_extralibs='$ldl'
2130 frei0r_src_filter_deps="frei0r dlopen"
2131 frei0r_src_filter_extralibs='$ldl'
2132 hqdn3d_filter_deps="gpl"
2133 interlace_filter_deps="gpl"
2134 ocv_filter_deps="libopencv"
2135 resample_filter_deps="avresample"
2136 scale_filter_deps="swscale"
2137
2138 # examples
2139 avcodec_example_deps="avcodec avutil"
2140 filter_audio_example_deps="avfilter avutil"
2141 metadata_example_deps="avformat avutil"
2142 output_example_deps="avcodec avformat avutil swscale"
2143 transcode_aac_example_deps="avcodec avformat avresample"
2144
2145 # libraries, in linking order
2146 avcodec_deps="avutil"
2147 avdevice_deps="avformat avcodec avutil"
2148 avfilter_deps="avutil"
2149 avformat_deps="avcodec avutil"
2150 avresample_deps="avutil"
2151 swscale_deps="avutil"
2152
2153 # programs
2154 avconv_deps="avcodec avfilter avformat avresample swscale"
2155 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2156                fps_filter null_filter resample_filter scale_filter
2157                setpts_filter trim_filter"
2158 avplay_deps="avcodec avformat avresample swscale sdl"
2159 avplay_libs='$sdl_libs'
2160 avplay_select="rdft"
2161 avprobe_deps="avcodec avformat"
2162
2163 # documentation
2164 pod2man_deps="doc"
2165 texi2html_deps="doc"
2166
2167 # default parameters
2168
2169 logfile="config.log"
2170
2171 # installation paths
2172 prefix_default="/usr/local"
2173 bindir_default='${prefix}/bin'
2174 datadir_default='${prefix}/share/avconv'
2175 docdir_default='${prefix}/share/doc/libav'
2176 incdir_default='${prefix}/include'
2177 libdir_default='${prefix}/lib'
2178 mandir_default='${prefix}/share/man'
2179 shlibdir_default="$libdir_default"
2180
2181 # toolchain
2182 ar_default="ar"
2183 cc_default="gcc"
2184 host_cc_default="gcc"
2185 cp_f="cp -f"
2186 ln_s="ln -s -f"
2187 nm_default="nm -g"
2188 objformat="elf"
2189 pkg_config_default=pkg-config
2190 ranlib="ranlib"
2191 strip="strip"
2192 yasmexe="yasm"
2193
2194 nogas=":"
2195
2196 # machine
2197 arch_default=$(uname -m)
2198 cpu="generic"
2199
2200 # OS
2201 target_os_default=$(tolower $(uname -s))
2202 host_os=$target_os_default
2203
2204 # configurable options
2205 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2206
2207 enable asm
2208 enable debug
2209 enable doc
2210 enable optimizations
2211 enable safe_bitstream_reader
2212 enable static
2213 enable swscale_alpha
2214
2215 # By default, enable only those hwaccels that have no external dependencies.
2216 enable dxva2 vdpau
2217
2218 # build settings
2219 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2220 LIBPREF="lib"
2221 LIBSUF=".a"
2222 FULLNAME='$(NAME)$(BUILDSUF)'
2223 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2224 SLIBPREF="lib"
2225 SLIBSUF=".so"
2226 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2227 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2228 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2229 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2230 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2231 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2232
2233 asflags_filter=echo
2234 cflags_filter=echo
2235 ldflags_filter=echo
2236
2237 AS_C='-c'
2238 AS_O='-o $@'
2239 CC_C='-c'
2240 CC_E='-E -o $@'
2241 CC_O='-o $@'
2242 LD_O='-o $@'
2243 LD_LIB='-l%'
2244 LD_PATH='-L'
2245 HOSTCC_C='-c'
2246 HOSTCC_E='-E -o $@'
2247 HOSTCC_O='-o $@'
2248 HOSTLD_O='-o $@'
2249
2250 host_libs='-lm'
2251 host_cflags_filter=echo
2252 host_ldflags_filter=echo
2253
2254 target_path='$(CURDIR)'
2255
2256 # since the object filename is not given with the -MM flag, the compiler
2257 # is only able to print the basename, and we must add the path ourselves
2258 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2259 DEPFLAGS='-MM'
2260
2261 # find source path
2262 if test -f configure; then
2263     source_path=.
2264 else
2265     source_path=$(cd $(dirname "$0"); pwd)
2266     echo "$source_path" | grep -q '[[:blank:]]' &&
2267         die "Out of tree builds are impossible with whitespace in source path."
2268     test -e "$source_path/config.h" &&
2269         die "Out of tree builds are impossible with config.h in source dir."
2270 fi
2271
2272 for v in "$@"; do
2273     r=${v#*=}
2274     l=${v%"$r"}
2275     r=$(sh_quote "$r")
2276     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2277 done
2278
2279 find_things(){
2280     thing=$1
2281     pattern=$2
2282     file=$source_path/$3
2283     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2284 }
2285
2286 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2287 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2288 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2289 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2290 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2291 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2292 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2293 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2294 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2295 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2296 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2297
2298 ALL_COMPONENTS="
2299     $BSF_LIST
2300     $DECODER_LIST
2301     $DEMUXER_LIST
2302     $ENCODER_LIST
2303     $FILTER_LIST
2304     $HWACCEL_LIST
2305     $INDEV_LIST
2306     $MUXER_LIST
2307     $OUTDEV_LIST
2308     $PARSER_LIST
2309     $PROTOCOL_LIST
2310 "
2311
2312 for n in $COMPONENT_LIST; do
2313     v=$(toupper ${n%s})_LIST
2314     eval enable \$$v
2315     eval ${n}_if_any="\$$v"
2316 done
2317
2318 enable $ARCH_EXT_LIST
2319
2320 die_unknown(){
2321     echo "Unknown option \"$1\"."
2322     echo "See $0 --help for available options."
2323     exit 1
2324 }
2325
2326 print_3_columns() {
2327     cat | tr ' ' '\n' | sort | pr -r -3 -t
2328 }
2329
2330 show_list() {
2331     suffix=_$1
2332     shift
2333     echo $* | sed s/$suffix//g | print_3_columns
2334     exit 0
2335 }
2336
2337 rand_list(){
2338     IFS=', '
2339     set -- $*
2340     unset IFS
2341     for thing; do
2342         comp=${thing%:*}
2343         prob=${thing#$comp}
2344         prob=${prob#:}
2345         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2346         echo "prob ${prob:-0.5}"
2347         printf '%s\n' $comp
2348     done
2349 }
2350
2351 do_random(){
2352     action=$1
2353     shift
2354     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2355     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2356 }
2357
2358 for opt do
2359     optval="${opt#*=}"
2360     case "$opt" in
2361         --extra-ldflags=*)
2362             add_ldflags $optval
2363         ;;
2364         --extra-ldexeflags=*)
2365             add_ldexeflags $optval
2366         ;;
2367         --extra-libs=*)
2368             add_extralibs $optval
2369         ;;
2370         --disable-devices)
2371             disable $INDEV_LIST $OUTDEV_LIST
2372         ;;
2373         --enable-debug=*)
2374             debuglevel="$optval"
2375         ;;
2376         --disable-programs)
2377             disable $PROGRAM_LIST
2378         ;;
2379         --disable-everything)
2380             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2381         ;;
2382         --disable-all)
2383             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2384             disable $LIBRARY_LIST $PROGRAM_LIST doc
2385         ;;
2386         --enable-random|--disable-random)
2387             action=${opt%%-random}
2388             do_random ${action#--} $COMPONENT_LIST
2389         ;;
2390         --enable-random=*|--disable-random=*)
2391             action=${opt%%-random=*}
2392             do_random ${action#--} $optval
2393         ;;
2394         --enable-*=*|--disable-*=*)
2395             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2396             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2397             eval list=\$$(toupper $thing)_LIST
2398             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2399             $action $(filter "$name" $list)
2400         ;;
2401         --enable-avserver|--disable-avserver*)
2402             warn "avserver has been removed, the ${opt} option is only"\
2403                  "provided for compatibility and will be removed in the future"
2404         ;;
2405         --enable-?*|--disable-?*)
2406             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2407             if is_in $option $COMPONENT_LIST; then
2408                 test $action = disable && action=unset
2409                 eval $action \$$(toupper ${option%s})_LIST
2410             elif is_in $option $CMDLINE_SELECT; then
2411                 $action $option
2412             else
2413                 die_unknown $opt
2414             fi
2415         ;;
2416         --list-*)
2417             NAME="${opt#--list-}"
2418             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2419             NAME=${NAME%s}
2420             eval show_list $NAME \$$(toupper $NAME)_LIST
2421         ;;
2422         --help|-h) show_help
2423         ;;
2424         *)
2425             optname="${opt%%=*}"
2426             optname="${optname#--}"
2427             optname=$(echo "$optname" | sed 's/-/_/g')
2428             if is_in $optname $CMDLINE_SET; then
2429                 eval $optname='$optval'
2430             elif is_in $optname $CMDLINE_APPEND; then
2431                 append $optname "$optval"
2432             else
2433                 die_unknown $opt
2434             fi
2435         ;;
2436     esac
2437 done
2438
2439 disabled logging && logfile=/dev/null
2440
2441 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2442 set >> $logfile
2443
2444 test -n "$cross_prefix" && enable cross_compile
2445
2446 if enabled cross_compile; then
2447     test -n "$arch" && test -n "$target_os" ||
2448         die "Must specify target arch and OS when cross-compiling"
2449 fi
2450
2451 ar_default="${cross_prefix}${ar_default}"
2452 cc_default="${cross_prefix}${cc_default}"
2453 nm_default="${cross_prefix}${nm_default}"
2454 pkg_config_default="${cross_prefix}${pkg_config_default}"
2455 ranlib="${cross_prefix}${ranlib}"
2456 strip="${cross_prefix}${strip}"
2457
2458 sysinclude_default="${sysroot}/usr/include"
2459
2460 case "$toolchain" in
2461     clang-asan)
2462         cc_default="clang"
2463         add_cflags  -fsanitize=address
2464         add_ldflags -fsanitize=address
2465     ;;
2466     clang-tsan)
2467         cc_default="clang"
2468         add_cflags  -fsanitize=thread -pie
2469         add_ldflags -fsanitize=thread -pie
2470     ;;
2471     clang-usan)
2472         cc_default="clang"
2473         add_cflags  -fsanitize=undefined -O1
2474         add_ldflags -fsanitize=undefined
2475     ;;
2476     gcc-asan)
2477         cc_default="gcc"
2478         add_cflags  -fsanitize=address
2479         add_ldflags -fsanitize=address
2480     ;;
2481     gcc-tsan)
2482         cc_default="gcc"
2483         add_cflags  -fsanitize=thread -pie -fPIC
2484         add_ldflags -fsanitize=thread -pie -fPIC
2485     ;;
2486     gcc-usan)
2487         cc_default="gcc"
2488         add_cflags  -fsanitize=undefined
2489         add_ldflags -fsanitize=undefined
2490     ;;
2491     valgrind-massif)
2492         target_exec_default="valgrind"
2493         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2494     ;;
2495     valgrind-memcheck)
2496         target_exec_default="valgrind"
2497         target_exec_args="--track-origins=yes --leak-check=full"
2498     ;;
2499     msvc)
2500         # Check whether the current MSVC version needs the C99 converter.
2501         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2502         # support enough of C99 to build libav. Default to the new
2503         # behaviour if the regexp was unable to match anything, since this
2504         # successfully parses the version number of existing supported
2505         # versions that require the converter (MSVC 2010 and 2012).
2506         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2507         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2508             cc_default="cl"
2509         else
2510             cc_default="c99wrap cl"
2511         fi
2512         ld_default="link"
2513         nm_default="dumpbin -symbols"
2514         ar_default="lib"
2515         target_os_default="win32"
2516         # Use a relative path for TMPDIR. This makes sure all the
2517         # ffconf temp files are written with a relative path, avoiding
2518         # issues with msys/win32 path conversion for MSVC parameters
2519         # such as -Fo<file> or -out:<file>.
2520         TMPDIR=.
2521     ;;
2522     icl)
2523         cc_default="icl"
2524         ld_default="xilink"
2525         nm_default="dumpbin -symbols"
2526         ar_default="xilib"
2527         target_os_default="win32"
2528         TMPDIR=.
2529     ;;
2530     gcov)
2531         add_cflags  -fprofile-arcs -ftest-coverage
2532         add_ldflags -fprofile-arcs -ftest-coverage
2533     ;;
2534     hardened)
2535         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2536         add_ldflags -Wl,-z,relro -Wl,-z,now
2537     ;;
2538     ?*)
2539         die "Unknown toolchain $toolchain"
2540     ;;
2541 esac
2542
2543 set_default arch cc pkg_config sysinclude target_exec target_os
2544 enabled cross_compile || host_cc_default=$cc
2545 set_default host_cc
2546
2547 if ! $pkg_config --version >/dev/null 2>&1; then
2548     warn "$pkg_config not found, library detection may fail."
2549     pkg_config=false
2550 fi
2551
2552 exesuf() {
2553     case $1 in
2554         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2555     esac
2556 }
2557
2558 EXESUF=$(exesuf $target_os)
2559 HOSTEXESUF=$(exesuf $host_os)
2560
2561 # set temporary file name
2562 : ${TMPDIR:=$TEMPDIR}
2563 : ${TMPDIR:=$TMP}
2564 : ${TMPDIR:=/tmp}
2565
2566 if ! check_cmd mktemp -u XXXXXX; then
2567     # simple replacement for missing mktemp
2568     # NOT SAFE FOR GENERAL USE
2569     mktemp(){
2570         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2571     }
2572 fi
2573
2574 tmpfile(){
2575     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2576         (set -C; exec > $tmp) 2>/dev/null ||
2577         die "Unable to create temporary file in $TMPDIR."
2578     append TMPFILES $tmp
2579     eval $1=$tmp
2580 }
2581
2582 trap 'rm -f -- $TMPFILES' EXIT
2583
2584 tmpfile TMPASM .asm
2585 tmpfile TMPC   .c
2586 tmpfile TMPE   $EXESUF
2587 tmpfile TMPH   .h
2588 tmpfile TMPO   .o
2589 tmpfile TMPS   .S
2590 tmpfile TMPSH  .sh
2591 tmpfile TMPV   .ver
2592
2593 unset -f mktemp
2594
2595 chmod +x $TMPE
2596
2597 # make sure we can execute files in $TMPDIR
2598 cat > $TMPSH 2>> $logfile <<EOF
2599 #! /bin/sh
2600 EOF
2601 chmod +x $TMPSH >> $logfile 2>&1
2602 if ! $TMPSH >> $logfile 2>&1; then
2603     cat <<EOF
2604 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2605 variable to another directory and make sure that it is not mounted noexec.
2606 EOF
2607     die "Sanity test failed."
2608 fi
2609
2610 ccc_flags(){
2611     for flag; do
2612         case $flag in
2613             -std=c99)           echo -c99                       ;;
2614             -mcpu=*)            echo -arch ${flag#*=}           ;;
2615             -mieee)             echo -ieee                      ;;
2616             -O*|-fast)          echo $flag                      ;;
2617             -fno-math-errno)    echo -assume nomath_errno       ;;
2618             -g)                 echo -g3                        ;;
2619             -Wall)              echo -msg_enable level2         ;;
2620             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2621             -Wl,*)              echo $flag                      ;;
2622             -f*|-W*)                                            ;;
2623             *)                  echo $flag                      ;;
2624         esac
2625    done
2626 }
2627
2628 cparser_flags(){
2629     for flag; do
2630         case $flag in
2631             -Wno-switch)             echo -Wno-switch-enum ;;
2632             -Wno-format-zero-length) ;;
2633             -Wdisabled-optimization) ;;
2634             -Wno-pointer-sign)       echo -Wno-other ;;
2635             *)                       echo $flag ;;
2636         esac
2637     done
2638 }
2639
2640 msvc_common_flags(){
2641     for flag; do
2642         case $flag in
2643             # In addition to specifying certain flags under the compiler
2644             # specific filters, they must be specified here as well or else the
2645             # generic catch all at the bottom will print the original flag.
2646             -Wall)                ;;
2647             -std=c99)             ;;
2648             # Common flags
2649             -fomit-frame-pointer) ;;
2650             -g)                   echo -Z7 ;;
2651             -fno-math-errno)      ;;
2652             -fno-common)          ;;
2653             -fno-signed-zeros)    ;;
2654             -fPIC)                ;;
2655             -mthumb)              ;;
2656             -march=*)             ;;
2657             -lz)                  echo zlib.lib ;;
2658             -lavifil32)           echo vfw32.lib ;;
2659             -lavicap32)           echo vfw32.lib user32.lib ;;
2660             -l*)                  echo ${flag#-l}.lib ;;
2661             *)                    echo $flag ;;
2662         esac
2663     done
2664 }
2665
2666 msvc_flags(){
2667     msvc_common_flags "$@"
2668     for flag; do
2669         case $flag in
2670             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2671                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2672                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2673                                        -wd4273 ;;
2674         esac
2675     done
2676 }
2677
2678 icl_flags(){
2679     msvc_common_flags "$@"
2680     for flag; do
2681         case $flag in
2682             # Despite what Intel's documentation says -Wall, which is supported
2683             # on Windows, does enable remarks so disable them here.
2684             -Wall)                echo $flag -Qdiag-disable:remark ;;
2685             -std=c99)             echo -Qstd=c99 ;;
2686         esac
2687     done
2688 }
2689
2690 pgi_flags(){
2691     for flag; do
2692         case $flag in
2693             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2694             -fomit-frame-pointer) echo -Mnoframe ;;
2695             -g)                   echo -gopt ;;
2696             *)                    echo $flag ;;
2697         esac
2698     done
2699 }
2700
2701 suncc_flags(){
2702     for flag; do
2703         case $flag in
2704             -march=*|-mcpu=*)
2705                 case "${flag#*=}" in
2706                     native)                   echo -xtarget=native       ;;
2707                     v9|niagara)               echo -xarch=sparc          ;;
2708                     ultrasparc)               echo -xarch=sparcvis       ;;
2709                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2710                     i586|pentium)             echo -xchip=pentium        ;;
2711                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2712                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2713                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2714                     pentium4*)          echo -xtarget=pentium4           ;;
2715                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2716                     *-sse3)             echo -xarch=sse3                 ;;
2717                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2718                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2719                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2720                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2721                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2722                     k8|opteron|athlon64|athlon-fx)
2723                                                echo -xarch=sse2a         ;;
2724                     athlon*)                   echo -xarch=pentium_proa  ;;
2725                 esac
2726                 ;;
2727             -std=c99)             echo -xc99              ;;
2728             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2729             -fPIC)                echo -KPIC -xcode=pic32 ;;
2730             -W*,*)                echo $flag              ;;
2731             -f*-*|-W*|-mimpure-text)                      ;;
2732             -shared)              echo -G                 ;;
2733             *)                    echo $flag              ;;
2734         esac
2735     done
2736 }
2737
2738 tms470_flags(){
2739     for flag; do
2740         case $flag in
2741             -march=*|-mcpu=*)
2742                 case "${flag#*=}" in
2743                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2744                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2745                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2746                     armv6*|arm11*)          echo -mv=6   ;;
2747                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2748                                             echo -mv=5e  ;;
2749                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2750                 esac
2751                 ;;
2752             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2753             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2754             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2755             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2756             -msoft-float)   echo --float_support=vfplib       ;;
2757             -O[0-3]|-mf=*)  echo $flag                        ;;
2758             -g)             echo -g -mn                       ;;
2759             -pds=*)         echo $flag                        ;;
2760             -D*|-I*)        echo $flag                        ;;
2761             --gcc|--abi=*)  echo $flag                        ;;
2762             -me)            echo $flag                        ;;
2763         esac
2764     done
2765 }
2766
2767 probe_cc(){
2768     pfx=$1
2769     _cc=$2
2770
2771     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2772     unset _ld_o _ldflags _ld_lib _ld_path
2773     unset _depflags _DEPCMD _DEPFLAGS
2774     _flags_filter=echo
2775
2776     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2777         _type=llvm_gcc
2778         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2779         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2780         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2781         _cflags_speed='-O3'
2782         _cflags_size='-Os'
2783     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2784         _type=gcc
2785         gcc_version=$($_cc --version | head -n1)
2786         gcc_basever=$($_cc -dumpversion)
2787         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2788         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2789         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2790         if ! $_cc -dumpversion | grep -q '^2\.'; then
2791             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2792         fi
2793         _cflags_speed='-O3'
2794         _cflags_size='-Os'
2795     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2796         _type=icc
2797         _ident=$($_cc --version | head -n1)
2798         _depflags='-MMD'
2799         _cflags_speed='-O3'
2800         _cflags_size='-Os'
2801         _cflags_noopt='-O1'
2802     elif $_cc -v 2>&1 | grep -q xlc; then
2803         _type=xlc
2804         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2805         _cflags_speed='-O5'
2806         _cflags_size='-O5 -qcompact'
2807     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2808         _type=ccc
2809         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2810         _DEPFLAGS='-M'
2811         _cflags_speed='-fast'
2812         _cflags_size='-O1'
2813         _flags_filter=ccc_flags
2814     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2815         test -d "$sysroot" || die "No valid sysroot specified."
2816         _type=armcc
2817         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2818         armcc_conf="$PWD/armcc.conf"
2819         $_cc --arm_linux_configure                 \
2820              --arm_linux_config_file="$armcc_conf" \
2821              --configure_sysroot="$sysroot"        \
2822              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2823              die "Error creating armcc configuration file."
2824         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2825         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2826         as_default="${cross_prefix}gcc"
2827         _depflags='-MMD'
2828         _cflags_speed='-O3'
2829         _cflags_size='-Os'
2830     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2831         _type=tms470
2832         _ident=$($_cc -version | head -n1 | tr -s ' ')
2833         _flags='--gcc --abi=eabi -me'
2834         _cc_e='-ppl -fe=$@'
2835         _cc_o='-fe=$@'
2836         _depflags='-ppa -ppd=$(@:.o=.d)'
2837         _cflags_speed='-O3 -mf=5'
2838         _cflags_size='-O3 -mf=2'
2839         _flags_filter=tms470_flags
2840     elif $_cc -v 2>&1 | grep -q clang; then
2841         _type=clang
2842         _ident=$($_cc --version | head -n1)
2843         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2844         _cflags_speed='-O3'
2845         _cflags_size='-Os'
2846     elif $_cc -V 2>&1 | grep -q Sun; then
2847         _type=suncc
2848         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2849         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2850         _DEPFLAGS='-xM1 -xc99'
2851         _ldflags='-std=c99'
2852         _cflags_speed='-O5'
2853         _cflags_size='-O5 -xspace'
2854         _flags_filter=suncc_flags
2855     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2856         _type=pathscale
2857         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2858         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2859         _cflags_speed='-O2'
2860         _cflags_size='-Os'
2861         _flags_filter='filter_out -Wdisabled-optimization'
2862     elif $_cc -v 2>&1 | grep -q Open64; then
2863         _type=open64
2864         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2865         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2866         _cflags_speed='-O2'
2867         _cflags_size='-Os'
2868         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2869     elif $_cc -V 2>&1 | grep -q Portland; then
2870         _type=pgi
2871         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2872         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2873         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2874         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2875         _cflags_noopt="-O1"
2876         _flags_filter=pgi_flags
2877     elif $_cc 2>&1 | grep -q Microsoft; then
2878         _type=msvc
2879         _ident=$($cc 2>&1 | head -n1)
2880         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2881         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2882         _cflags_speed="-O2"
2883         _cflags_size="-O1"
2884         if $_cc 2>&1 | grep -q Linker; then
2885             _ld_o='-out:$@'
2886         else
2887             _ld_o='-Fe$@'
2888         fi
2889         _cc_o='-Fo$@'
2890         _cc_e='-P -Fi$@'
2891         _flags_filter=msvc_flags
2892         _ld_lib='lib%.a'
2893         _ld_path='-libpath:'
2894         _flags='-nologo'
2895         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2896         if [ $pfx = hostcc ]; then
2897             append _cflags -Dsnprintf=_snprintf
2898         fi
2899     elif $_cc 2>&1 | grep -q Intel; then
2900         _type=icl
2901         _ident=$($cc 2>&1 | head -n1)
2902         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2903         # Not only is O3 broken on 13.x+ but it is slower on all previous
2904         # versions (tested) as well.
2905         _cflags_speed="-O2"
2906         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2907         if $_cc 2>&1 | grep -q Linker; then
2908             _ld_o='-out:$@'
2909         else
2910             _ld_o='-Fe$@'
2911         fi
2912         _cc_o='-Fo$@'
2913         _cc_e='-P'
2914         _flags_filter=icl_flags
2915         _ld_lib='lib%.a'
2916         _ld_path='-libpath:'
2917         # -Qdiag-error to make icl error when seeing certain unknown arguments
2918         _flags='-nologo -Qdiag-error:4044,10157'
2919         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2920         # with MSVC which enables it by default.
2921         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2922         if [ $pfx = hostcc ]; then
2923             append _cflags -Dsnprintf=_snprintf
2924         fi
2925     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2926         _type=cparser
2927         _ident=$($_cc --version | head -n1)
2928         _depflags='-MMD'
2929         _cflags_speed='-O4'
2930         _cflags_size='-O2'
2931         _flags_filter=cparser_flags
2932     fi
2933
2934     eval ${pfx}_type=\$_type
2935     eval ${pfx}_ident=\$_ident
2936 }
2937
2938 set_ccvars(){
2939     eval ${1}_C=\${_cc_c-\${${1}_C}}
2940     eval ${1}_E=\${_cc_e-\${${1}_E}}
2941     eval ${1}_O=\${_cc_o-\${${1}_O}}
2942
2943     if [ -n "$_depflags" ]; then
2944         eval ${1}_DEPFLAGS=\$_depflags
2945     else
2946         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2947         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2948         eval DEP${1}FLAGS=\$_flags
2949     fi
2950 }
2951
2952 probe_cc cc "$cc"
2953 cflags_filter=$_flags_filter
2954 cflags_speed=$_cflags_speed
2955 cflags_size=$_cflags_size
2956 cflags_noopt=$_cflags_noopt
2957 add_cflags $_flags $_cflags
2958 cc_ldflags=$_ldflags
2959 set_ccvars CC
2960
2961 probe_cc hostcc "$host_cc"
2962 host_cflags_filter=$_flags_filter
2963 add_host_cflags  $_flags $_cflags
2964 set_ccvars HOSTCC
2965
2966 test -n "$cc_type" && enable $cc_type ||
2967     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2968
2969 : ${as_default:=$cc}
2970 : ${dep_cc_default:=$cc}
2971 : ${ld_default:=$cc}
2972 : ${host_ld_default:=$host_cc}
2973 set_default ar as dep_cc ld host_ld
2974
2975 probe_cc as "$as"
2976 asflags_filter=$_flags_filter
2977 add_asflags $_flags $_cflags
2978 set_ccvars AS
2979
2980 probe_cc ld "$ld"
2981 ldflags_filter=$_flags_filter
2982 add_ldflags $_flags $_ldflags
2983 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2984 LD_O=${_ld_o-$LD_O}
2985 LD_LIB=${_ld_lib-$LD_LIB}
2986 LD_PATH=${_ld_path-$LD_PATH}
2987
2988 probe_cc hostld "$host_ld"
2989 host_ldflags_filter=$_flags_filter
2990 add_host_ldflags $_flags $_ldflags
2991 HOSTLD_O=${_ld_o-$HOSTLD_O}
2992
2993 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2994     probe_cc depcc "$dep_cc"
2995     CCDEP=${_DEPCMD:-$DEPCMD}
2996     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2997     DEPCCFLAGS=$_flags
2998 fi
2999
3000 if $ar 2>&1 | grep -q Microsoft; then
3001     arflags="-nologo"
3002     ar_o='-out:$@'
3003 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3004     arflags="rq"
3005     ar_o='$@'
3006 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3007     arflags='-Xany -r -c'
3008     ar_o='$@'
3009 else
3010     arflags="rc"
3011     ar_o='$@'
3012 fi
3013
3014 add_cflags $extra_cflags
3015 add_asflags $extra_cflags
3016
3017 if test -n "$sysroot"; then
3018     case "$cc_type" in
3019         gcc|llvm_gcc|clang)
3020             add_cppflags --sysroot="$sysroot"
3021             add_ldflags --sysroot="$sysroot"
3022         ;;
3023         tms470)
3024             add_cppflags -I"$sysinclude"
3025             add_ldflags  --sysroot="$sysroot"
3026         ;;
3027     esac
3028 fi
3029
3030 if test "$cpu" = host; then
3031     enabled cross_compile &&
3032         die "--cpu=host makes no sense when cross-compiling."
3033
3034     case "$cc_type" in
3035         gcc|llvm_gcc)
3036             check_native(){
3037                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3038                 sed -n "/cc1.*$1=/{
3039                             s/.*$1=\\([^ ]*\\).*/\\1/
3040                             p
3041                             q
3042                         }" $TMPE
3043             }
3044             cpu=$(check_native -march || check_native -mcpu)
3045         ;;
3046     esac
3047
3048     test "${cpu:-host}" = host &&
3049         die "--cpu=host not supported with compiler $cc"
3050 fi
3051
3052 # Deal with common $arch aliases
3053 case "$arch" in
3054     aarch64|arm64)
3055         arch="aarch64"
3056     ;;
3057     arm*)
3058         arch="arm"
3059     ;;
3060     mips*|IP*)
3061         arch="mips"
3062     ;;
3063     parisc*|hppa*)
3064         arch="parisc"
3065     ;;
3066     "Power Macintosh"|ppc*|powerpc*)
3067         arch="ppc"
3068     ;;
3069     s390|s390x)
3070         arch="s390"
3071     ;;
3072     sh4|sh)
3073         arch="sh4"
3074     ;;
3075     sun4u|sparc*)
3076         arch="sparc"
3077     ;;
3078     tilegx|tile-gx)
3079         arch="tilegx"
3080     ;;
3081     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3082         arch="x86"
3083     ;;
3084 esac
3085
3086 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3087 enable $arch
3088
3089 # Add processor-specific flags
3090 if enabled aarch64; then
3091
3092     case $cpu in
3093         armv*)
3094             cpuflags="-march=$cpu"
3095         ;;
3096         *)
3097             cpuflags="-mcpu=$cpu"
3098         ;;
3099     esac
3100
3101 elif enabled alpha; then
3102
3103     cpuflags="-mcpu=$cpu"
3104
3105 elif enabled arm; then
3106
3107     check_arm_arch() {
3108         check_cpp_condition stddef.h \
3109             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3110             $cpuflags
3111     }
3112
3113     probe_arm_arch() {
3114         if   check_arm_arch 4;        then echo armv4;
3115         elif check_arm_arch 4T;       then echo armv4t;
3116         elif check_arm_arch 5;        then echo armv5;
3117         elif check_arm_arch 5E;       then echo armv5e;
3118         elif check_arm_arch 5T;       then echo armv5t;
3119         elif check_arm_arch 5TE;      then echo armv5te;
3120         elif check_arm_arch 5TEJ;     then echo armv5te;
3121         elif check_arm_arch 6;        then echo armv6;
3122         elif check_arm_arch 6J;       then echo armv6j;
3123         elif check_arm_arch 6K;       then echo armv6k;
3124         elif check_arm_arch 6Z;       then echo armv6z;
3125         elif check_arm_arch 6ZK;      then echo armv6zk;
3126         elif check_arm_arch 6T2;      then echo armv6t2;
3127         elif check_arm_arch 7;        then echo armv7;
3128         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3129         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3130         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3131         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3132         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3133         fi
3134     }
3135
3136     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3137
3138     case $cpu in
3139         armv*)
3140             cpuflags="-march=$cpu"
3141             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3142         ;;
3143         *)
3144             cpuflags="-mcpu=$cpu"
3145             case $cpu in
3146                 cortex-a*)                               subarch=armv7a  ;;
3147                 cortex-r*)                               subarch=armv7r  ;;
3148                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3149                 arm11*)                                  subarch=armv6   ;;
3150                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3151                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3152                 *)                             subarch=$(probe_arm_arch) ;;
3153             esac
3154         ;;
3155     esac
3156
3157     case "$subarch" in
3158         armv5t*)    enable fast_clz                ;;
3159         armv[6-8]*) enable fast_clz fast_unaligned ;;
3160     esac
3161
3162 elif enabled avr32; then
3163
3164     case $cpu in
3165         ap7[02]0[0-2])
3166             subarch="avr32_ap"
3167             cpuflags="-mpart=$cpu"
3168         ;;
3169         ap)
3170             subarch="avr32_ap"
3171             cpuflags="-march=$cpu"
3172         ;;
3173         uc3[ab]*)
3174             subarch="avr32_uc"
3175             cpuflags="-mcpu=$cpu"
3176         ;;
3177         uc)
3178             subarch="avr32_uc"
3179             cpuflags="-march=$cpu"
3180         ;;
3181     esac
3182
3183 elif enabled bfin; then
3184
3185     cpuflags="-mcpu=$cpu"
3186
3187 elif enabled mips; then
3188
3189     cpuflags="-march=$cpu"
3190
3191 elif enabled ppc; then
3192
3193     disable ldbrx
3194
3195     case $(tolower $cpu) in
3196         601|ppc601|powerpc601)
3197             cpuflags="-mcpu=601"
3198             disable altivec
3199         ;;
3200         603*|ppc603*|powerpc603*)
3201             cpuflags="-mcpu=603"
3202             disable altivec
3203         ;;
3204         604*|ppc604*|powerpc604*)
3205             cpuflags="-mcpu=604"
3206             disable altivec
3207         ;;
3208         g3|75*|ppc75*|powerpc75*)
3209             cpuflags="-mcpu=750"
3210             disable altivec
3211         ;;
3212         g4|745*|ppc745*|powerpc745*)
3213             cpuflags="-mcpu=7450"
3214         ;;
3215         74*|ppc74*|powerpc74*)
3216             cpuflags="-mcpu=7400"
3217         ;;
3218         g5|970|ppc970|powerpc970)
3219             cpuflags="-mcpu=970"
3220         ;;
3221         power[3-7]*)
3222             cpuflags="-mcpu=$cpu"
3223         ;;
3224         cell)
3225             cpuflags="-mcpu=cell"
3226             enable ldbrx
3227         ;;
3228         e500mc)
3229             cpuflags="-mcpu=e500mc"
3230             disable altivec
3231         ;;
3232         e500v2)
3233             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3234             disable altivec
3235             disable dcbzl
3236         ;;
3237         e500)
3238             cpuflags="-mcpu=8540 -mhard-float"
3239             disable altivec
3240             disable dcbzl
3241         ;;
3242     esac
3243
3244 elif enabled sparc; then
3245
3246     case $cpu in
3247         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3248             cpuflags="-mcpu=$cpu"
3249         ;;
3250         ultrasparc*|niagara[234])
3251             cpuflags="-mcpu=$cpu"
3252         ;;
3253     esac
3254
3255 elif enabled x86; then
3256
3257     case $cpu in
3258         i[345]86|pentium)
3259             cpuflags="-march=$cpu"
3260             disable mmx
3261         ;;
3262         # targets that do NOT support nopl and conditional mov (cmov)
3263         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3264             cpuflags="-march=$cpu"
3265             disable i686
3266         ;;
3267         # targets that do support nopl and conditional mov (cmov)
3268         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3269             cpuflags="-march=$cpu"
3270             enable i686
3271             enable fast_cmov
3272         ;;
3273         # targets that do support conditional mov but on which it's slow
3274         pentium4|pentium4m|prescott|nocona)
3275             cpuflags="-march=$cpu"
3276             enable i686
3277             disable fast_cmov
3278         ;;
3279     esac
3280
3281 fi
3282
3283 if [ "$cpu" != generic ]; then
3284     add_cflags  $cpuflags
3285     add_asflags $cpuflags
3286 fi
3287
3288 # compiler sanity check
3289 check_exec <<EOF
3290 int main(void){ return 0; }
3291 EOF
3292 if test "$?" != 0; then
3293     echo "$cc is unable to create an executable file."
3294     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3295         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3296         echo "Only do this if you know what cross compiling means."
3297     fi
3298     die "C compiler test failed."
3299 fi
3300
3301 add_cppflags -D_ISOC99_SOURCE
3302 check_cflags -std=c99
3303 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3304 #include <stdlib.h>
3305 EOF
3306 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3307 #include <stdlib.h>
3308 EOF
3309
3310 add_host_cppflags -D_ISOC99_SOURCE
3311 check_host_cflags -std=c99
3312 check_host_cflags -Wall
3313 check_host_cflags -O3
3314
3315 check_64bit(){
3316     arch32=$1
3317     arch64=$2
3318     expr=$3
3319     check_code cc "" "int test[2*($expr) - 1]" &&
3320         subarch=$arch64 || subarch=$arch32
3321 }
3322
3323 case "$arch" in
3324     aarch64|alpha|ia64)
3325         spic=$shared
3326     ;;
3327     mips)
3328         check_64bit mips mips64 '_MIPS_SIM > 1'
3329         spic=$shared
3330     ;;
3331     parisc)
3332         check_64bit parisc parisc64 'sizeof(void *) > 4'
3333         spic=$shared
3334     ;;
3335     ppc)
3336         check_64bit ppc ppc64 'sizeof(void *) > 4'
3337         spic=$shared
3338     ;;
3339     s390)
3340         check_64bit s390 s390x 'sizeof(void *) > 4'
3341         spic=$shared
3342     ;;
3343     sparc)
3344         check_64bit sparc sparc64 'sizeof(void *) > 4'
3345         spic=$shared
3346     ;;
3347     x86)
3348         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3349         if test "$subarch" = "x86_64"; then
3350             spic=$shared
3351         fi
3352     ;;
3353 esac
3354
3355 enable $subarch
3356 enabled spic && enable_weak pic
3357
3358 # OS specific
3359 case $target_os in
3360     aix)
3361         SHFLAGS=-shared
3362         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3363         enabled shared && add_ldflags -Wl,-brtl
3364         ;;
3365     android)
3366         disable symver
3367         SLIB_INSTALL_NAME='$(SLIBNAME)'
3368         SLIB_INSTALL_LINKS=
3369         # soname not set on purpose
3370         SHFLAGS=-shared
3371         ;;
3372     haiku)
3373         prefix_default="/boot/common"
3374         network_extralibs="-lnetwork"
3375         host_libs=
3376         ;;
3377     sunos)
3378         SHFLAGS='-shared -Wl,-h,$$(@F)'
3379         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3380         network_extralibs="-lsocket -lnsl"
3381         # When using suncc to build, the Solaris linker will mark
3382         # an executable with each instruction set encountered by
3383         # the Solaris assembler.  As our libraries contain their own
3384         # guards for processor-specific code, instead suppress
3385         # generation of the HWCAPS ELF section on Solaris x86 only.
3386         enabled_all suncc x86 &&
3387             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3388             add_ldflags -Wl,-M,mapfile
3389         nm_default='nm -P -g'
3390         ;;
3391     netbsd)
3392         disable symver
3393         oss_indev_extralibs="-lossaudio"
3394         oss_outdev_extralibs="-lossaudio"
3395         ;;
3396     openbsd|bitrig)
3397         disable symver
3398         SHFLAGS='-shared'
3399         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3400         SLIB_INSTALL_LINKS=
3401         oss_indev_extralibs="-lossaudio"
3402         oss_outdev_extralibs="-lossaudio"
3403         ;;
3404     dragonfly)
3405         disable symver
3406         ;;
3407     freebsd)
3408         ;;
3409     bsd/os)
3410         add_extralibs -lpoll -lgnugetopt
3411         ;;
3412     darwin)
3413         gas="gas-preprocessor.pl $cc"
3414         enabled ppc && add_asflags -force_cpusubtype_ALL
3415         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3416         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3417         add_ldflags -Wl,-dynamic,-search_paths_first
3418         SLIBSUF=".dylib"
3419         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3420         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3421         objformat="macho"
3422         enabled x86_64 && objformat="macho64"
3423         enabled_any pic shared ||
3424             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3425         ;;
3426     mingw32*)
3427         if test $target_os = "mingw32ce"; then
3428             disable network
3429         else
3430             target_os=mingw32
3431         fi
3432         LIBTARGET=i386
3433         if enabled x86_64; then
3434             LIBTARGET="i386:x86-64"
3435         elif enabled arm; then
3436             LIBTARGET=arm-wince
3437         fi
3438         check_ldflags -Wl,--nxcompat
3439         check_ldflags -Wl,--dynamicbase
3440         shlibdir_default="$bindir_default"
3441         SLIBPREF=""
3442         SLIBSUF=".dll"
3443         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3444         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3445         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3446         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3447         SLIB_INSTALL_LINKS=
3448         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3449         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3450         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3451         objformat="win32"
3452         dlltool="${cross_prefix}dlltool"
3453         ranlib=:
3454         enable dos_paths
3455         ;;
3456     win32|win64)
3457         disable symver
3458         if enabled shared; then
3459             # Link to the import library instead of the normal static library
3460             # for shared libs.
3461             LD_LIB='%.lib'
3462             # Cannot build both shared and static libs with MSVC or icl.
3463             disable static
3464         fi
3465         shlibdir_default="$bindir_default"
3466         SLIBPREF=""
3467         SLIBSUF=".dll"
3468         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3469         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3470         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3471         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3472         SLIB_INSTALL_LINKS=
3473         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3474         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3475         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3476         objformat="win32"
3477         ranlib=:
3478         enable dos_paths
3479         ;;
3480     cygwin*)
3481         target_os=cygwin
3482         shlibdir_default="$bindir_default"
3483         SLIBPREF="cyg"
3484         SLIBSUF=".dll"
3485         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3486         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3487         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3488         SLIB_INSTALL_LINKS=
3489         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3490         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3491         objformat="win32"
3492         enable dos_paths
3493         ;;
3494     *-dos|freedos|opendos)
3495         network_extralibs="-lsocket"
3496         objformat="coff"
3497         enable dos_paths
3498         add_cppflags -U__STRICT_ANSI__
3499         ;;
3500     linux)
3501         enable dv1394
3502         ;;
3503     irix*)
3504         target_os=irix
3505         ranlib="echo ignoring ranlib"
3506         ;;
3507     os/2*)
3508         ln_s="cp -f"
3509         objformat="aout"
3510         add_cppflags -D_GNU_SOURCE
3511         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3512         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3513         LIBSUF="_s.a"
3514         SLIBPREF=""
3515         SLIBSUF=".dll"
3516         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3517         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3518         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3519             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3520             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3521             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3522             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3523             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3524         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3525             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3526         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3527         enable dos_paths
3528         ;;
3529     gnu/kfreebsd)
3530         add_cppflags -D_BSD_SOURCE
3531         ;;
3532     gnu)
3533         ;;
3534     qnx)
3535         add_cppflags -D_QNX_SOURCE
3536         network_extralibs="-lsocket"
3537         ;;
3538     symbian)
3539         SLIBSUF=".dll"
3540         enable dos_paths
3541         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3542         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3543         add_ldflags -Wl,--target1-abs,--no-undefined \
3544                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3545                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3546         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3547                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3548                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3549         ;;
3550     osf1)
3551         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3552         ;;
3553     minix)
3554         ;;
3555     plan9)
3556         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3557                      -D_REENTRANT_SOURCE        \
3558                      -D_RESEARCH_SOURCE         \
3559                      -DFD_SETSIZE=96            \
3560                      -DHAVE_SOCK_OPTS
3561         add_compat strtod.o strtod=avpriv_strtod
3562         network_extralibs='-lbsd'
3563         exeobjs=compat/plan9/main.o
3564         cp_f='cp'
3565         ;;
3566     none)
3567         ;;
3568     *)
3569         die "Unknown OS '$target_os'."
3570         ;;
3571 esac
3572
3573 # determine libc flavour
3574
3575 probe_libc(){
3576     pfx=$1
3577     pfx_no_=${pfx%_}
3578     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3579     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3580         eval ${pfx}libc_type=uclibc
3581         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3582     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3583         eval ${pfx}libc_type=glibc
3584         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3585     # MinGW headers can be installed on Cygwin, so check for newlib first.
3586     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3587         eval ${pfx}libc_type=newlib
3588         add_${pfx}cppflags -U__STRICT_ANSI__
3589     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3590     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3591         eval ${pfx}libc_type=mingw64
3592         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3593         eval test \$${pfx_no_}cc_type = "gcc" &&
3594             add_${pfx}cppflags -D__printf__=__gnu_printf__
3595     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3596          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3597         eval ${pfx}libc_type=mingw32
3598         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3599             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3600             die "ERROR: MinGW32 runtime version must be >= 3.15."
3601         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3602         eval test \$${pfx_no_}cc_type = "gcc" &&
3603             add_${pfx}cppflags -D__printf__=__gnu_printf__
3604     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3605         eval ${pfx}libc_type=msvcrt
3606         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3607         # 0x601 by default unless something else is set by the user.
3608         # This can easily lead to us detecting functions only present
3609         # in such new versions and producing binaries requiring windows 7.0.
3610         # Therefore explicitly set the default to XP unless the user has
3611         # set something else on the command line.
3612         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3613             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3614     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3615         eval ${pfx}libc_type=klibc
3616     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3617         eval ${pfx}libc_type=bionic
3618     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3619         eval ${pfx}libc_type=solaris
3620         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3621     fi
3622 }
3623
3624 probe_libc
3625 test -n "$libc_type" && enable libc_$libc_type
3626 probe_libc host_
3627 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3628
3629 case $libc_type in
3630     bionic)
3631         add_compat strtod.o strtod=avpriv_strtod
3632         ;;
3633     msvcrt)
3634         add_compat strtod.o strtod=avpriv_strtod
3635         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3636                                      _snprintf=avpriv_snprintf  \
3637                                      vsnprintf=avpriv_vsnprintf
3638         ;;
3639 esac
3640
3641 # hacks for compiler/libc/os combinations
3642
3643 if enabled_all tms470 libc_glibc; then
3644     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3645     add_cppflags -D__USER_LABEL_PREFIX__=
3646     add_cppflags -D__builtin_memset=memset
3647     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3648     add_cflags   -pds=48    # incompatible redefinition of macro
3649 fi
3650
3651 if enabled_all ccc libc_glibc; then
3652     add_ldflags -Wl,-z,now  # calls to libots crash without this
3653 fi
3654
3655 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3656     add_cppflags '-I\$(SRC_PATH)/compat/float'
3657
3658 esc(){
3659     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3660 }
3661
3662 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3663
3664 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3665
3666 set_default $PATHS_LIST
3667 set_default nm
3668
3669 # we need to build at least one lib type
3670 if ! enabled_any static shared; then
3671     cat <<EOF
3672 At least one library type must be built.
3673 Specify --enable-static to build the static libraries or --enable-shared to
3674 build the shared libraries as well. To only build the shared libraries specify
3675 --disable-static in addition to --enable-shared.
3676 EOF
3677     exit 1;
3678 fi
3679
3680 die_license_disabled() {
3681     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3682 }
3683
3684 die_license_disabled gpl libcdio
3685 die_license_disabled gpl libx264
3686 die_license_disabled gpl libx265
3687 die_license_disabled gpl libxavs
3688 die_license_disabled gpl libxvid
3689 die_license_disabled gpl x11grab
3690
3691 die_license_disabled nonfree libfaac
3692 die_license_disabled nonfree libfdk_aac
3693 die_license_disabled nonfree openssl
3694
3695 die_license_disabled version3 libopencore_amrnb
3696 die_license_disabled version3 libopencore_amrwb
3697 die_license_disabled version3 libvo_aacenc
3698 die_license_disabled version3 libvo_amrwbenc
3699
3700 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3701
3702 disabled optimizations || check_cflags -fomit-frame-pointer
3703
3704 enable_weak_pic() {
3705     disabled pic && return
3706     enable pic
3707     add_cppflags -DPIC
3708     case "$target_os" in
3709     mingw*|cygwin*)
3710         ;;
3711     *)
3712         add_cflags -fPIC
3713         ;;
3714     esac
3715     add_asflags  -fPIC
3716 }
3717
3718 enabled pic && enable_weak_pic
3719
3720 check_cc <<EOF || die "Symbol mangling check failed."
3721 int ff_extern;
3722 EOF
3723 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3724 extern_prefix=${sym%%ff_extern*}
3725
3726 check_cc <<EOF && enable_weak inline_asm
3727 void foo(void) { __asm__ volatile ("" ::); }
3728 EOF
3729
3730 _restrict=
3731 for restrict_keyword in restrict __restrict__ __restrict; do
3732     check_cc <<EOF && _restrict=$restrict_keyword && break
3733 void foo(char * $restrict_keyword p);
3734 EOF
3735 done
3736
3737 check_cc <<EOF && enable pragma_deprecated
3738 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3739 EOF
3740
3741 check_cc <<EOF && enable attribute_packed
3742 struct { int x; } __attribute__((packed)) x;
3743 EOF
3744
3745 check_cc <<EOF && enable attribute_may_alias
3746 union { int x; } __attribute__((may_alias)) x;
3747 EOF
3748
3749 check_cc <<EOF || die "endian test failed"
3750 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3751 EOF
3752 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3753
3754
3755 if enabled asm; then
3756     enabled     arm         && nogas=die
3757     enabled_all ppc altivec && nogas=warn
3758     as=${gas:=$as}
3759     check_as <<EOF && enable gnu_as || \
3760         $nogas "GNU assembler not found, install gas-preprocessor"
3761 .macro m n
3762 \n: .int 0
3763 .endm
3764 m x
3765 EOF
3766
3767     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3768 .altmacro
3769 EOF
3770
3771     check_as <<EOF && enable as_func
3772 .func test
3773 .endfunc
3774 EOF
3775 fi
3776
3777 check_inline_asm inline_asm_labels '"1:\n"'
3778
3779 if enabled aarch64; then
3780     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3781     # internal assembler in clang 3.3 does not support this instruction
3782     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3783     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3784
3785     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3786
3787 elif enabled alpha; then
3788
3789     check_cflags -mieee
3790
3791 elif enabled arm; then
3792
3793     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3794     enabled thumb && check_cflags -mthumb || check_cflags -marm
3795
3796     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3797         enable vfp_args
3798     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3799         case "${cross_prefix:-$cc}" in
3800             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3801             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3802 __asm__ (".eabi_attribute 28, 1");
3803 int main(void) { return 0; }
3804 EOF
3805         esac
3806         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3807     fi
3808
3809     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3810     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3811     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3812     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3813     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3814     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3815
3816     [ $target_os = linux ] || [ $target_os = android ] ||
3817         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3818             $ARCH_EXT_LIST_ARM
3819
3820     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3821
3822     check_as <<EOF && enable as_dn_directive
3823 ra .dn d0.i16
3824 .unreq ra
3825 EOF
3826
3827     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3828
3829 elif enabled mips; then
3830
3831     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3832
3833 elif enabled parisc; then
3834
3835     if enabled gcc; then
3836         case $($cc -dumpversion) in
3837             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3838         esac
3839     fi
3840
3841 elif enabled ppc; then
3842
3843     enable local_aligned_8 local_aligned_16
3844
3845     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3846     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3847     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3848     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3849
3850     # AltiVec flags: The FSF version of GCC differs from the Apple version
3851     if enabled altivec; then
3852         check_cflags -maltivec -mabi=altivec &&
3853         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3854         check_cflags -faltivec
3855
3856         # check if our compiler supports Motorola AltiVec C API
3857         check_cc <<EOF || disable altivec
3858 $inc_altivec_h
3859 int main(void) {
3860     vector signed int v1 = (vector signed int) { 0 };
3861     vector signed int v2 = (vector signed int) { 1 };
3862     v1 = vec_add(v1, v2);
3863     return 0;
3864 }
3865 EOF
3866
3867         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3868     fi
3869
3870 elif enabled x86; then
3871
3872     check_builtin rdtsc    intrin.h   "__rdtsc()"
3873     check_builtin mm_empty mmintrin.h "_mm_empty()"
3874
3875     enable local_aligned_8 local_aligned_16
3876
3877     # check whether EBP is available on x86
3878     # As 'i' is stored on the stack, this program will crash
3879     # if the base pointer is used to access it because the
3880     # base pointer is cleared in the inline assembly code.
3881     check_exec_crash <<EOF && enable ebp_available
3882 volatile int i=0;
3883 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3884 return i;
3885 EOF
3886
3887     # check whether EBX is available on x86
3888     check_inline_asm ebx_available '""::"b"(0)' &&
3889         check_inline_asm ebx_available '"":::"%ebx"'
3890
3891     # check whether xmm clobbers are supported
3892     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3893
3894     # check whether binutils is new enough to compile SSSE3/MMXEXT
3895     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3896     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3897
3898     if ! disabled_any asm mmx yasm; then
3899         if check_cmd $yasmexe --version; then
3900             enabled x86_64 && yasm_extra="-m amd64"
3901             yasm_debug="-g dwarf2"
3902         elif check_cmd nasm -v; then
3903             yasmexe=nasm
3904             yasm_debug="-g -F dwarf"
3905             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3906         fi
3907
3908         YASMFLAGS="-f $objformat $yasm_extra"
3909         enabled pic               && append YASMFLAGS "-DPIC"
3910         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3911         case "$objformat" in
3912             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3913         esac
3914
3915         check_yasm "movbe ecx, [5]" && enable yasm ||
3916             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3917         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3918         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3919         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3920         check_yasm "CPU amdnop" || disable cpunop
3921     fi
3922
3923     case "$cpu" in
3924         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3925             disable fast_clz
3926         ;;
3927     esac
3928
3929 fi
3930
3931 check_ldflags -Wl,--as-needed
3932
3933 if check_func dlopen; then
3934     ldl=
3935 elif check_func dlopen -ldl; then
3936     ldl=-ldl
3937 fi
3938
3939 if ! disabled network; then
3940     check_func getaddrinfo $network_extralibs
3941     check_func getservbyport $network_extralibs
3942     check_func inet_aton $network_extralibs
3943
3944     check_type netdb.h "struct addrinfo"
3945     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3946     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3947     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3948     check_type poll.h "struct pollfd"
3949     check_type netinet/sctp.h "struct sctp_event_subscribe"
3950     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3951     check_type netinet/in.h "struct sockaddr_in6"
3952     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3953     check_type "sys/types.h sys/socket.h" socklen_t
3954
3955     # Prefer arpa/inet.h over winsock2
3956     if check_header arpa/inet.h ; then
3957         check_func closesocket
3958     elif check_header winsock2.h ; then
3959         check_func_headers winsock2.h closesocket -lws2 &&
3960             network_extralibs="-lws2" ||
3961         { check_func_headers winsock2.h closesocket -lws2_32 &&
3962             network_extralibs="-lws2_32"; } || disable winsock2_h network
3963         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3964
3965         check_type ws2tcpip.h socklen_t
3966         check_type ws2tcpip.h "struct addrinfo"
3967         check_type ws2tcpip.h "struct group_source_req"
3968         check_type ws2tcpip.h "struct ip_mreq_source"
3969         check_type ws2tcpip.h "struct ipv6_mreq"
3970         check_type winsock2.h "struct pollfd"
3971         check_struct winsock2.h "struct sockaddr" sa_len
3972         check_type ws2tcpip.h "struct sockaddr_in6"
3973         check_type ws2tcpip.h "struct sockaddr_storage"
3974     else
3975         disable network
3976     fi
3977 fi
3978
3979 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3980 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3981 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3982 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3983
3984 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3985 check_func  ${malloc_prefix}memalign            && enable memalign
3986 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3987
3988 check_func  fcntl
3989 check_func  fork
3990 check_func  gethrtime
3991 check_func  getopt
3992 check_func  getrusage
3993 check_func  gettimeofday
3994 check_func  isatty
3995 check_func  localtime_r
3996 check_func  mach_absolute_time
3997 check_func  mkstemp
3998 check_func  mmap
3999 check_func  mprotect
4000 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4001 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4002 check_func  sched_getaffinity
4003 check_func  setrlimit
4004 check_func  strerror_r
4005 check_func  strptime
4006 check_func  sysconf
4007 check_func  sysctl
4008 check_func  usleep
4009
4010 check_func_headers io.h setmode
4011 check_func_headers stdlib.h getenv
4012
4013 check_func_headers windows.h CoTaskMemFree -lole32
4014 check_func_headers windows.h GetProcessAffinityMask
4015 check_func_headers windows.h GetProcessTimes
4016 check_func_headers windows.h GetSystemTimeAsFileTime
4017 check_func_headers windows.h MapViewOfFile
4018 check_func_headers windows.h SetConsoleTextAttribute
4019 check_func_headers windows.h Sleep
4020 check_func_headers windows.h VirtualAlloc
4021
4022 check_header direct.h
4023 check_header dlfcn.h
4024 check_header dxva.h
4025 check_header dxva2api.h
4026 check_header io.h
4027 check_header mach/mach_time.h
4028 check_header malloc.h
4029 check_header poll.h
4030 check_header sys/mman.h
4031 check_header sys/param.h
4032 check_header sys/resource.h
4033 check_header sys/select.h
4034 check_header sys/time.h
4035 check_header sys/un.h
4036 check_header unistd.h
4037 check_header vdpau/vdpau.h
4038 check_header vdpau/vdpau_x11.h
4039 check_header VideoDecodeAcceleration/VDADecoder.h
4040 check_header windows.h
4041 check_header X11/extensions/XvMClib.h
4042
4043 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4044 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4045 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4046
4047 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4048
4049 if ! disabled w32threads && ! enabled pthreads; then
4050     check_func_headers "windows.h process.h" _beginthreadex &&
4051         enable w32threads || disable w32threads
4052 fi
4053
4054 # check for some common methods of building with pthread support
4055 # do this before the optional library checks as some of them require pthreads
4056 if ! disabled pthreads && ! enabled w32threads; then
4057     enable pthreads
4058     if check_func pthread_join -pthread; then
4059         add_cflags -pthread
4060         add_extralibs -pthread
4061     elif check_func pthread_join -pthreads; then
4062         add_cflags -pthreads
4063         add_extralibs -pthreads
4064     elif check_func pthread_join -lpthreadGC2; then
4065         add_extralibs -lpthreadGC2
4066     elif check_lib pthread.h pthread_join -lpthread; then
4067         :
4068     elif ! check_func pthread_join; then
4069         disable pthreads
4070     fi
4071 fi
4072
4073 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4074 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4075
4076 check_lib math.h sin -lm && LIBM="-lm"
4077 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4078
4079 atan2f_args=2
4080 ldexpf_args=2
4081 powf_args=2
4082
4083 for func in $MATH_FUNCS; do
4084     eval check_mathfunc $func \${${func}_args:-1}
4085 done
4086
4087 # these are off by default, so fail if requested and not available
4088 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4089                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4090                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4091 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4092 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4093 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4094 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4095 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4096 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4097 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4098 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4099                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4100                                done || die "ERROR: libgsm not found"; }
4101 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4102 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4103 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4104 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4105 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4106 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4107                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4108 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4109 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4110 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4111 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4112 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4113 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4114 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4115 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4116 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4117 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4118 enabled libvpx            && {
4119     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4120                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4121     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4122                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4123     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4124     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4125 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4126 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4127 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4128                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4129                                die "ERROR: libx264 version must be >= 0.118."; }
4130 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4131                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4132                                die "ERROR: libx265 version must be >= 17."; }
4133 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4134 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4135 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4136                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4137                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4138                                die "ERROR: openssl not found"; }
4139
4140 if enabled gnutls; then
4141     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4142     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4143 fi
4144
4145 # libdc1394 check
4146 if enabled libdc1394; then
4147     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4148         enable libdc1394_2; } ||
4149     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4150         enable libdc1394_1; } ||
4151     die "ERROR: No version of libdc1394 found "
4152 fi
4153
4154 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4155     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4156     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4157     enable sdl
4158 fi
4159
4160 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4161 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4162
4163 check_header linux/fb.h
4164 check_header linux/videodev2.h
4165 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4166
4167 check_header sys/videoio.h
4168
4169 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4170 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4171 # w32api 3.12 had it defined wrong
4172 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4173
4174 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4175 { check_header dev/bktr/ioctl_meteor.h &&
4176   check_header dev/bktr/ioctl_bt848.h; } ||
4177 { check_header machine/ioctl_meteor.h &&
4178   check_header machine/ioctl_bt848.h; } ||
4179 { check_header dev/video/meteor/ioctl_meteor.h &&
4180   check_header dev/video/bktr/ioctl_bt848.h; } ||
4181 check_header dev/ic/bt8xx.h
4182
4183 check_header sndio.h
4184 check_header sys/soundcard.h
4185 check_header soundcard.h
4186
4187 enabled_any alsa_indev alsa_outdev &&
4188     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4189
4190 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4191     check_func jack_port_get_latency_range -ljack
4192
4193 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4194
4195 if enabled libcdio; then
4196     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4197     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4198 fi
4199
4200 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4201
4202 enabled x11grab                                           &&
4203 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4204 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4205 { enabled xlib || die "ERROR: Xlib not found"; }
4206
4207 enabled vdpau &&
4208     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4209     disable vdpau
4210
4211 enabled vdpau && enabled xlib &&
4212     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4213     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4214     enable vdpau_x11
4215
4216 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4217
4218 # add some useful compiler flags if supported
4219 check_cflags -Wdeclaration-after-statement
4220 check_cflags -Wall
4221 check_cflags -Wdisabled-optimization
4222 check_cflags -Wpointer-arith
4223 check_cflags -Wredundant-decls
4224 check_cflags -Wcast-qual
4225 check_cflags -Wwrite-strings
4226 check_cflags -Wtype-limits
4227 check_cflags -Wundef
4228 check_cflags -Wmissing-prototypes
4229 check_cflags -Wstrict-prototypes
4230 enabled extra_warnings && check_cflags -Winline
4231
4232 check_disable_warning(){
4233     warning_flag=-W${1#-Wno-}
4234     test_cflags $warning_flag && add_cflags $1
4235 }
4236
4237 check_disable_warning -Wno-parentheses
4238 check_disable_warning -Wno-switch
4239 check_disable_warning -Wno-format-zero-length
4240 check_disable_warning -Wno-pointer-sign
4241
4242 # add some linker flags
4243 check_ldflags -Wl,--warn-common
4244 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4245 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4246
4247 # add some strip flags
4248 # -wN '..@*' is more selective than -x, but not available everywhere.
4249 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4250
4251 enabled neon_clobber_test &&
4252     check_ldflags -Wl,--wrap,avcodec_open2              \
4253                   -Wl,--wrap,avcodec_decode_audio4      \
4254                   -Wl,--wrap,avcodec_decode_video2      \
4255                   -Wl,--wrap,avcodec_decode_subtitle2   \
4256                   -Wl,--wrap,avcodec_encode_audio2      \
4257                   -Wl,--wrap,avcodec_encode_video2      \
4258                   -Wl,--wrap,avcodec_encode_subtitle    \
4259                   -Wl,--wrap,avresample_convert ||
4260     disable neon_clobber_test
4261
4262 enabled xmm_clobber_test &&
4263     check_ldflags -Wl,--wrap,avcodec_open2              \
4264                   -Wl,--wrap,avcodec_decode_audio4      \
4265                   -Wl,--wrap,avcodec_decode_video2      \
4266                   -Wl,--wrap,avcodec_decode_subtitle2   \
4267                   -Wl,--wrap,avcodec_encode_audio2      \
4268                   -Wl,--wrap,avcodec_encode_video2      \
4269                   -Wl,--wrap,avcodec_encode_subtitle    \
4270                   -Wl,--wrap,avresample_convert         \
4271                   -Wl,--wrap,sws_scale ||
4272     disable xmm_clobber_test
4273
4274 echo "X{};" > $TMPV
4275 if test_ldflags -Wl,--version-script,$TMPV; then
4276     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4277     check_cc <<EOF && enable symver_asm_label
4278 void ff_foo(void) __asm__ ("av_foo@VERSION");
4279 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4280 EOF
4281     check_cc <<EOF && enable symver_gnu_asm
4282 __asm__(".symver ff_foo,av_foo@VERSION");
4283 void ff_foo(void) {}
4284 EOF
4285 fi
4286
4287 if [ -z "$optflags" ]; then
4288     if enabled small; then
4289         optflags=$cflags_size
4290     elif enabled optimizations; then
4291         optflags=$cflags_speed
4292     else
4293         optflags=$cflags_noopt
4294     fi
4295 fi
4296
4297 check_optflags(){
4298     check_cflags "$@"
4299     enabled lto && check_ldflags "$@"
4300 }
4301
4302
4303 if enabled lto; then
4304     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4305     check_cflags  -flto
4306     check_ldflags -flto $cpuflags
4307 fi
4308
4309 check_optflags $optflags
4310 check_optflags -fno-math-errno
4311 check_optflags -fno-signed-zeros
4312
4313 if enabled icc; then
4314     # Just warnings, no remarks
4315     check_cflags -w1
4316     # -wd: Disable following warnings
4317     # 144, 167, 556: -Wno-pointer-sign
4318     # 1292: attribute "foo" ignored
4319     # 1419: external declaration in primary source file
4320     # 10006: ignoring unknown option -fno-signed-zeros
4321     # 10148: ignoring unknown option -Wno-parentheses
4322     # 10156: ignoring option '-W'; no argument required
4323     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4324     # 11030: Warning unknown option --as-needed
4325     # 10156: ignoring option '-export'; no argument required
4326     check_ldflags -wd10156,11030
4327     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4328     enable ebp_available
4329     if enabled x86_32; then
4330         icc_version=$($cc -dumpversion)
4331         test ${icc_version%%.*} -ge 11 &&
4332             check_cflags -falign-stack=maintain-16-byte ||
4333             disable aligned_stack
4334     fi
4335 elif enabled ccc; then
4336     # disable some annoying warnings
4337     add_cflags -msg_disable bitnotint
4338     add_cflags -msg_disable mixfuncvoid
4339     add_cflags -msg_disable nonstandcast
4340     add_cflags -msg_disable unsupieee
4341 elif enabled gcc; then
4342     check_optflags -fno-tree-vectorize
4343     check_cflags -Werror=implicit-function-declaration
4344     check_cflags -Werror=missing-prototypes
4345     check_cflags -Werror=return-type
4346     check_cflags -Werror=declaration-after-statement
4347     check_cflags -Werror=vla
4348     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4349 elif enabled llvm_gcc; then
4350     check_cflags -mllvm -stack-alignment=16
4351 elif enabled clang; then
4352     check_cflags -mllvm -stack-alignment=16
4353     check_cflags -Qunused-arguments
4354     check_cflags -Werror=implicit-function-declaration
4355     check_cflags -Werror=missing-prototypes
4356     check_cflags -Werror=return-type
4357 elif enabled cparser; then
4358     add_cflags -Wno-missing-variable-declarations
4359     add_cflags -Wno-empty-statement
4360 elif enabled armcc; then
4361     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4362     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4363     # 2523: use of inline assembly is deprecated
4364     add_cflags -W${armcc_opt},--diag_suppress=2523
4365     add_cflags -W${armcc_opt},--diag_suppress=1207
4366     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4367     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4368     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4369     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4370 elif enabled tms470; then
4371     add_cflags -pds=824 -pds=837
4372     disable inline_asm
4373 elif enabled pathscale; then
4374     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4375 elif enabled_any msvc icl; then
4376     enabled x86_32 && disable aligned_stack
4377     enabled_all x86_32 debug && add_cflags -Oy-
4378     enabled debug && add_ldflags -debug
4379     enable pragma_deprecated
4380     if enabled icl; then
4381         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4382         # (correctly) on icl 13.x.
4383         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4384             add_cflags -Qansi-alias
4385         # icl will pass the inline asm tests but inline asm is currently
4386         # not supported (build will fail)
4387         disable inline_asm
4388     fi
4389 fi
4390
4391 case $as_type in
4392     clang)
4393         add_asflags -Qunused-arguments
4394     ;;
4395 esac
4396
4397 case $ld_type in
4398     clang)
4399         check_ldflags -Qunused-arguments
4400     ;;
4401 esac
4402
4403 case $target_os in
4404     osf1)
4405         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4406     ;;
4407     plan9)
4408         add_cppflags -Dmain=plan9_main
4409     ;;
4410 esac
4411
4412 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4413
4414 check_deps $CONFIG_LIST       \
4415            $CONFIG_EXTRA      \
4416            $HAVE_LIST         \
4417            $ALL_COMPONENTS    \
4418
4419 enabled_all dxva2 CoTaskMemFree &&
4420     prepend avconv_libs $($ldflags_filter "-lole32") &&
4421     enable dxva2_lib
4422
4423 ! enabled_any memalign posix_memalign aligned_malloc &&
4424     enabled_any $need_memalign && enable memalign_hack
4425
4426 for thread in $THREADS_LIST; do
4427     if enabled $thread; then
4428         test -n "$thread_type" &&
4429             die "ERROR: Only one thread type must be selected." ||
4430             thread_type="$thread"
4431     fi
4432 done
4433
4434 # conditional library dependencies, in linking order
4435 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4436 enabled resample_filter && prepend avfilter_deps "avresample"
4437 enabled scale_filter    && prepend avfilter_deps "swscale"
4438
4439 enabled opus_decoder    && prepend avcodec_deps "avresample"
4440
4441 expand_deps(){
4442     lib_deps=${1}_deps
4443     eval "deps=\$$lib_deps"
4444     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4445     unique $lib_deps
4446 }
4447
4448 map 'expand_deps $v' $LIBRARY_LIST
4449
4450 echo "install prefix            $prefix"
4451 echo "source path               $source_path"
4452 echo "C compiler                $cc"
4453 echo "C library                 $libc_type"
4454 if test "$host_cc" != "$cc"; then
4455     echo "host C compiler           $host_cc"
4456     echo "host C library            $host_libc_type"
4457 fi
4458 echo "ARCH                      $arch ($cpu)"
4459 if test "$build_suffix" != ""; then
4460     echo "build suffix              $build_suffix"
4461 fi
4462 if test "$extra_version" != ""; then
4463     echo "version string suffix     $extra_version"
4464 fi
4465 echo "big-endian                ${bigendian-no}"
4466 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4467 if enabled x86; then
4468     echo "${yasmexe}                      ${yasm-no}"
4469     echo "MMX enabled               ${mmx-no}"
4470     echo "MMXEXT enabled            ${mmxext-no}"
4471     echo "3DNow! enabled            ${amd3dnow-no}"
4472     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4473     echo "SSE enabled               ${sse-no}"
4474     echo "SSSE3 enabled             ${ssse3-no}"
4475     echo "AVX enabled               ${avx-no}"
4476     echo "XOP enabled               ${xop-no}"
4477     echo "FMA3 enabled              ${fma3-no}"
4478     echo "FMA4 enabled              ${fma4-no}"
4479     echo "i686 features enabled     ${i686-no}"
4480     echo "CMOV is fast              ${fast_cmov-no}"
4481     echo "EBX available             ${ebx_available-no}"
4482     echo "EBP available             ${ebp_available-no}"
4483 fi
4484 if enabled aarch64; then
4485     echo "NEON enabled              ${neon-no}"
4486     echo "VFP enabled               ${vfp-no}"
4487 fi
4488 if enabled arm; then
4489     echo "ARMv5TE enabled           ${armv5te-no}"
4490     echo "ARMv6 enabled             ${armv6-no}"
4491     echo "ARMv6T2 enabled           ${armv6t2-no}"
4492     echo "VFP enabled               ${vfp-no}"
4493     echo "NEON enabled              ${neon-no}"
4494 fi
4495 if enabled ppc; then
4496     echo "AltiVec enabled           ${altivec-no}"
4497     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4498     echo "dcbzl available           ${dcbzl-no}"
4499 fi
4500 echo "debug symbols             ${debug-no}"
4501 echo "optimize for size         ${small-no}"
4502 echo "optimizations             ${optimizations-no}"
4503 echo "static                    ${static-no}"
4504 echo "shared                    ${shared-no}"
4505 echo "new filter support        ${avfilter-no}"
4506 echo "network support           ${network-no}"
4507 echo "threading support         ${thread_type-no}"
4508 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4509 echo "SDL support               ${sdl-no}"
4510 test -n "$random_seed" &&
4511     echo "random seed               ${random_seed}"
4512 echo
4513
4514 echo "External libraries:"
4515 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4516 echo
4517
4518 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4519     echo "Enabled ${type}s:"
4520     eval list=\$$(toupper $type)_LIST
4521     print_enabled '_*' $list | print_3_columns
4522     echo
4523 done
4524
4525 license="LGPL version 2.1 or later"
4526 if enabled nonfree; then
4527     license="nonfree and unredistributable"
4528 elif enabled gplv3; then
4529     license="GPL version 3 or later"
4530 elif enabled lgplv3; then
4531     license="LGPL version 3 or later"
4532 elif enabled gpl; then
4533     license="GPL version 2 or later"
4534 fi
4535
4536 echo "License: $license"
4537
4538 echo "Creating config.mak and config.h..."
4539
4540 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4541
4542 config_files="$TMPH config.mak"
4543
4544 cat > config.mak <<EOF
4545 # Automatically generated by configure - do not modify!
4546 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4547 prefix=$prefix
4548 LIBDIR=\$(DESTDIR)$libdir
4549 SHLIBDIR=\$(DESTDIR)$shlibdir
4550 INCDIR=\$(DESTDIR)$incdir
4551 BINDIR=\$(DESTDIR)$bindir
4552 DATADIR=\$(DESTDIR)$datadir
4553 DOCDIR=\$(DESTDIR)$docdir
4554 MANDIR=\$(DESTDIR)$mandir
4555 SRC_PATH=$source_path
4556 CC_IDENT=$cc_ident
4557 ARCH=$arch
4558 CC=$cc
4559 AS=$as
4560 LD=$ld
4561 DEPCC=$dep_cc
4562 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4563 DEPAS=$as
4564 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4565 YASM=$yasmexe
4566 DEPYASM=$yasmexe
4567 AR=$ar
4568 ARFLAGS=$arflags
4569 AR_O=$ar_o
4570 RANLIB=$ranlib
4571 STRIP=$strip
4572 LN_S=$ln_s
4573 CPPFLAGS=$CPPFLAGS
4574 CFLAGS=$CFLAGS
4575 ASFLAGS=$ASFLAGS
4576 AS_C=$AS_C
4577 AS_O=$AS_O
4578 CC_C=$CC_C
4579 CC_E=$CC_E
4580 CC_O=$CC_O
4581 LD_O=$LD_O
4582 LD_LIB=$LD_LIB
4583 LD_PATH=$LD_PATH
4584 DLLTOOL=$dlltool
4585 LDFLAGS=$LDFLAGS
4586 LDEXEFLAGS=$LDEXEFLAGS
4587 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4588 STRIPFLAGS=$STRIPFLAGS
4589 YASMFLAGS=$YASMFLAGS
4590 BUILDSUF=$build_suffix
4591 FULLNAME=$FULLNAME
4592 LIBPREF=$LIBPREF
4593 LIBSUF=$LIBSUF
4594 LIBNAME=$LIBNAME
4595 SLIBPREF=$SLIBPREF
4596 SLIBSUF=$SLIBSUF
4597 EXESUF=$EXESUF
4598 EXTRA_VERSION=$extra_version
4599 CCDEP=$CCDEP
4600 CCDEP_FLAGS=$CCDEP_FLAGS
4601 ASDEP=$ASDEP
4602 ASDEP_FLAGS=$ASDEP_FLAGS
4603 CC_DEPFLAGS=$CC_DEPFLAGS
4604 AS_DEPFLAGS=$AS_DEPFLAGS
4605 HOSTCC=$host_cc
4606 HOSTLD=$host_ld
4607 HOSTCFLAGS=$host_cflags
4608 HOSTCPPFLAGS=$host_cppflags
4609 HOSTEXESUF=$HOSTEXESUF
4610 HOSTLDFLAGS=$host_ldflags
4611 HOSTLIBS=$host_libs
4612 DEPHOSTCC=$host_cc
4613 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4614 HOSTCCDEP=$HOSTCCDEP
4615 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4616 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4617 HOSTCC_C=$HOSTCC_C
4618 HOSTCC_O=$HOSTCC_O
4619 HOSTLD_O=$HOSTLD_O
4620 TARGET_EXEC=$target_exec $target_exec_args
4621 TARGET_PATH=$target_path
4622 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4623 CFLAGS-avplay=$sdl_cflags
4624 ZLIB=$($ldflags_filter -lz)
4625 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4626 EXTRALIBS=$extralibs
4627 COMPAT_OBJS=$compat_objs
4628 EXEOBJS=$exeobjs
4629 INSTALL=install
4630 LIBTARGET=${LIBTARGET}
4631 SLIBNAME=${SLIBNAME}
4632 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4633 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4634 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4635 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4636 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4637 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4638 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4639 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4640 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4641 EOF
4642
4643 get_version(){
4644     lcname=lib${1}
4645     name=$(toupper $lcname)
4646     file=$source_path/$lcname/version.h
4647     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4648     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4649     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4650     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4651     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4652 }
4653
4654 map 'get_version $v' $LIBRARY_LIST
4655
4656 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4657
4658 print_program_libs(){
4659     eval "program_libs=\$${1}_libs"
4660     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4661 }
4662
4663 map 'print_program_libs $v' $PROGRAM_LIST
4664
4665 cat > $TMPH <<EOF
4666 /* Automatically generated by configure - do not modify! */
4667 #ifndef LIBAV_CONFIG_H
4668 #define LIBAV_CONFIG_H
4669 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4670 #define LIBAV_LICENSE "$(c_escape $license)"
4671 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4672 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4673 #define restrict $_restrict
4674 #define EXTERN_PREFIX "${extern_prefix}"
4675 #define EXTERN_ASM ${extern_prefix}
4676 #define SLIBSUF "$SLIBSUF"
4677 EOF
4678
4679 test -n "$malloc_prefix" &&
4680     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4681
4682 if enabled yasm; then
4683     append config_files $TMPASM
4684     printf '' >$TMPASM
4685 fi
4686
4687 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4688
4689 print_config ARCH_   "$config_files" $ARCH_LIST
4690 print_config HAVE_   "$config_files" $HAVE_LIST
4691 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4692                                      $CONFIG_EXTRA      \
4693                                      $ALL_COMPONENTS    \
4694
4695 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4696
4697 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4698 cp_if_changed $TMPH config.h
4699 touch .config
4700
4701 enabled yasm && cp_if_changed $TMPASM config.asm
4702
4703 cat > $TMPH <<EOF
4704 /* Generated by ffconf */
4705 #ifndef AVUTIL_AVCONFIG_H
4706 #define AVUTIL_AVCONFIG_H
4707 EOF
4708
4709 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4710
4711 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4712
4713 cp_if_changed $TMPH libavutil/avconfig.h
4714
4715 test -n "$WARNINGS" && printf "\n$WARNINGS"
4716
4717 # build pkg-config files
4718
4719 lib_version(){
4720     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4721 }
4722
4723 pkgconfig_generate(){
4724     name=$1
4725     shortname=${name#lib}${build_suffix}
4726     comment=$2
4727     version=$3
4728     libs=$4
4729     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4730     requires=${requires%, }
4731     enabled ${name#lib} || return 0
4732     mkdir -p $name
4733     cat <<EOF > $name/$name.pc
4734 prefix=$prefix
4735 exec_prefix=\${prefix}
4736 libdir=$libdir
4737 includedir=$incdir
4738
4739 Name: $name
4740 Description: $comment
4741 Version: $version
4742 Requires: $(enabled shared || echo $requires)
4743 Requires.private: $(enabled shared && echo $requires)
4744 Conflicts:
4745 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4746 Libs.private: $(enabled shared && echo $libs)
4747 Cflags: -I\${includedir}
4748 EOF
4749     cat <<EOF > $name/$name-uninstalled.pc
4750 prefix=
4751 exec_prefix=
4752 libdir=\${pcfiledir}
4753 includedir=${source_path}
4754
4755 Name: $name
4756 Description: $comment
4757 Version: $version
4758 Requires: $requires
4759 Conflicts:
4760 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4761 Cflags: -I\${includedir}
4762 EOF
4763 }
4764
4765 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4766 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4767 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4768 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4769 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4770 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4771 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"