build: Add define for SIMD extensions requiring 16-byte aligned buffers
[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     simd_align_16
1344 "
1345
1346 BUILTIN_LIST="
1347     atomic_cas_ptr
1348     machine_rw_barrier
1349     MemoryBarrier
1350     mm_empty
1351     rdtsc
1352     sync_val_compare_and_swap
1353 "
1354 HAVE_LIST_CMDLINE="
1355     inline_asm
1356     symver
1357     yasm
1358 "
1359
1360 HAVE_LIST_PUB="
1361     bigendian
1362     fast_unaligned
1363 "
1364
1365 HEADERS_LIST="
1366     alsa_asoundlib_h
1367     altivec_h
1368     arpa_inet_h
1369     cdio_paranoia_h
1370     cdio_paranoia_paranoia_h
1371     dev_bktr_ioctl_bt848_h
1372     dev_bktr_ioctl_meteor_h
1373     dev_ic_bt8xx_h
1374     dev_video_bktr_ioctl_bt848_h
1375     dev_video_meteor_ioctl_meteor_h
1376     direct_h
1377     dlfcn_h
1378     dxva_h
1379     gsm_h
1380     io_h
1381     mach_mach_time_h
1382     machine_ioctl_bt848_h
1383     machine_ioctl_meteor_h
1384     malloc_h
1385     poll_h
1386     sndio_h
1387     soundcard_h
1388     sys_mman_h
1389     sys_param_h
1390     sys_resource_h
1391     sys_select_h
1392     sys_soundcard_h
1393     sys_time_h
1394     sys_un_h
1395     sys_videoio_h
1396     unistd_h
1397     windows_h
1398     winsock2_h
1399 "
1400
1401 INTRINSICS_LIST="
1402     intrinsics_neon
1403 "
1404
1405 MATH_FUNCS="
1406     atanf
1407     atan2f
1408     cbrtf
1409     cosf
1410     exp2
1411     exp2f
1412     expf
1413     isinf
1414     isnan
1415     ldexpf
1416     llrint
1417     llrintf
1418     log2
1419     log2f
1420     log10f
1421     lrint
1422     lrintf
1423     powf
1424     rint
1425     round
1426     roundf
1427     sinf
1428     trunc
1429     truncf
1430 "
1431
1432 SYSTEM_FUNCS="
1433     aligned_malloc
1434     closesocket
1435     CommandLineToArgvW
1436     CoTaskMemFree
1437     CryptGenRandom
1438     dlopen
1439     fcntl
1440     flt_lim
1441     fork
1442     getaddrinfo
1443     gethrtime
1444     getopt
1445     GetProcessAffinityMask
1446     GetProcessMemoryInfo
1447     GetProcessTimes
1448     getrusage
1449     getservbyport
1450     GetSystemTimeAsFileTime
1451     gettimeofday
1452     inet_aton
1453     isatty
1454     jack_port_get_latency_range
1455     localtime_r
1456     mach_absolute_time
1457     MapViewOfFile
1458     memalign
1459     mkstemp
1460     mmap
1461     mprotect
1462     nanosleep
1463     posix_memalign
1464     sched_getaffinity
1465     SetConsoleTextAttribute
1466     setmode
1467     setrlimit
1468     Sleep
1469     strerror_r
1470     strptime
1471     sysconf
1472     sysctl
1473     usleep
1474     VirtualAlloc
1475 "
1476
1477 TOOLCHAIN_FEATURES="
1478     as_dn_directive
1479     as_func
1480     asm_mod_q
1481     attribute_may_alias
1482     attribute_packed
1483     ebp_available
1484     ebx_available
1485     gnu_as
1486     ibm_asm
1487     inline_asm_labels
1488     pragma_deprecated
1489     symver_asm_label
1490     symver_gnu_asm
1491     vfp_args
1492     xform_asm
1493     xmm_clobbers
1494 "
1495
1496 TYPES_LIST="
1497     socklen_t
1498     struct_addrinfo
1499     struct_group_source_req
1500     struct_ip_mreq_source
1501     struct_ipv6_mreq
1502     struct_pollfd
1503     struct_rusage_ru_maxrss
1504     struct_sockaddr_in6
1505     struct_sockaddr_sa_len
1506     struct_sockaddr_storage
1507     struct_v4l2_frmivalenum_discrete
1508 "
1509
1510 HAVE_LIST="
1511     $ARCH_EXT_LIST
1512     $(add_suffix _external $ARCH_EXT_LIST)
1513     $(add_suffix _inline   $ARCH_EXT_LIST)
1514     $ARCH_FEATURES
1515     $ATOMICS_LIST
1516     $BUILTIN_LIST
1517     $HAVE_LIST_CMDLINE
1518     $HAVE_LIST_PUB
1519     $HEADERS_LIST
1520     $INTRINSICS_LIST
1521     $MATH_FUNCS
1522     $SYSTEM_FUNCS
1523     $THREADS_LIST
1524     $TOOLCHAIN_FEATURES
1525     $TYPES_LIST
1526     atomics_native
1527     dos_paths
1528     dxva2_lib
1529     libc_msvcrt
1530     libdc1394_1
1531     libdc1394_2
1532     sdl
1533     threads
1534     vdpau_x11
1535     xlib
1536 "
1537
1538 # options emitted with CONFIG_ prefix but not available on the command line
1539 CONFIG_EXTRA="
1540     aandcttables
1541     ac3dsp
1542     audio_frame_queue
1543     audiodsp
1544     blockdsp
1545     bswapdsp
1546     cabac
1547     dvprofile
1548     fdctdsp
1549     gcrypt
1550     golomb
1551     gplv3
1552     h263dsp
1553     h264chroma
1554     h264dsp
1555     h264pred
1556     h264qpel
1557     hpeldsp
1558     huffman
1559     huffyuvdsp
1560     huffyuvencdsp
1561     idctdsp
1562     iirfilter
1563     intrax8
1564     lgplv3
1565     lpc
1566     me_cmp
1567     mpeg_er
1568     mpegaudio
1569     mpegaudiodsp
1570     mpegvideo
1571     mpegvideoenc
1572     nettle
1573     pixblockdsp
1574     qpeldsp
1575     rangecoder
1576     riffdec
1577     riffenc
1578     rtpdec
1579     rtpenc_chain
1580     sinewin
1581     tpeldsp
1582     videodsp
1583     vp3dsp
1584 "
1585
1586 CMDLINE_SELECT="
1587     $ARCH_EXT_LIST
1588     $CONFIG_LIST
1589     $HAVE_LIST_CMDLINE
1590     $THREADS_LIST
1591     asm
1592     cross_compile
1593     debug
1594     extra_warnings
1595     logging
1596     lto
1597     optimizations
1598 "
1599
1600 PATHS_LIST="
1601     bindir
1602     datadir
1603     docdir
1604     incdir
1605     libdir
1606     mandir
1607     prefix
1608     shlibdir
1609 "
1610
1611 CMDLINE_SET="
1612     $PATHS_LIST
1613     ar
1614     arch
1615     as
1616     build_suffix
1617     cc
1618     cpu
1619     cross_prefix
1620     dep_cc
1621     extra_version
1622     host_cc
1623     host_cflags
1624     host_ld
1625     host_ldflags
1626     host_libs
1627     host_os
1628     ld
1629     logfile
1630     malloc_prefix
1631     nm
1632     optflags
1633     pkg_config
1634     pkg_config_flags
1635     random_seed
1636     samples
1637     sysinclude
1638     sysroot
1639     target_exec
1640     target_os
1641     target_path
1642     target_samples
1643     toolchain
1644 "
1645
1646 CMDLINE_APPEND="
1647     extra_cflags
1648     host_cppflags
1649 "
1650
1651 # code dependency declarations
1652
1653 # architecture extensions
1654
1655 armv5te_deps="arm"
1656 armv6_deps="arm"
1657 armv6t2_deps="arm"
1658 armv8_deps="aarch64"
1659 neon_deps_any="aarch64 arm"
1660 intrinsics_neon_deps="neon"
1661 vfp_deps_any="aarch64 arm"
1662 vfpv3_deps="vfp"
1663
1664 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1665
1666 altivec_deps="ppc"
1667 ppc4xx_deps="ppc"
1668
1669 cpunop_deps="i686"
1670 x86_64_select="i686"
1671 x86_64_suggest="fast_cmov"
1672
1673 amd3dnow_deps="mmx"
1674 amd3dnowext_deps="amd3dnow"
1675 i686_deps="x86"
1676 mmx_deps="x86"
1677 mmxext_deps="mmx"
1678 sse_deps="mmxext"
1679 sse2_deps="sse"
1680 sse3_deps="sse2"
1681 ssse3_deps="sse3"
1682 sse4_deps="ssse3"
1683 sse42_deps="sse4"
1684 avx_deps="sse42"
1685 xop_deps="avx"
1686 fma3_deps="avx"
1687 fma4_deps="avx"
1688 avx2_deps="avx"
1689
1690 mmx_external_deps="yasm"
1691 mmx_inline_deps="inline_asm"
1692 mmx_suggest="mmx_external mmx_inline"
1693
1694 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1695     eval dep=\$${ext}_deps
1696     eval ${ext}_external_deps='"${dep}_external"'
1697     eval ${ext}_inline_deps='"${dep}_inline"'
1698     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1699 done
1700
1701 aligned_stack_if_any="aarch64 ppc x86"
1702 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1703 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1704 fast_unaligned_if_any="aarch64 ppc x86"
1705 simd_align_16_if_any="altivec neon sse"
1706
1707 # system capabilities
1708 log2_deps="!libc_msvcrt"
1709
1710 symver_if_any="symver_asm_label symver_gnu_asm"
1711
1712 # threading support
1713 atomics_gcc_if="sync_val_compare_and_swap"
1714 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1715 atomics_win32_if="MemoryBarrier"
1716 atomics_native_if_any="$ATOMICS_LIST"
1717 w32threads_deps="atomics_native"
1718 threads_if_any="$THREADS_LIST"
1719
1720 # subsystems
1721 dct_select="rdft"
1722 error_resilience_select="me_cmp"
1723 intrax8_select="error_resilience"
1724 mdct_select="fft"
1725 rdft_select="fft"
1726 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1727 mpeg_er_select="error_resilience"
1728 mpegaudio_select="mpegaudiodsp"
1729 mpegaudiodsp_select="dct"
1730 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1731 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1732
1733 # decoders / encoders
1734 aac_decoder_select="mdct sinewin"
1735 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1736 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1737 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1738 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1739 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1740 aic_decoder_select="golomb idctdsp"
1741 alac_encoder_select="lpc"
1742 als_decoder_select="bswapdsp"
1743 amrnb_decoder_select="lsp"
1744 amrwb_decoder_select="lsp"
1745 amv_decoder_select="sp5x_decoder"
1746 ape_decoder_select="bswapdsp"
1747 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1748 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1749 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1750 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1751 atrac1_decoder_select="mdct sinewin"
1752 atrac3_decoder_select="mdct"
1753 atrac3p_decoder_select="mdct sinewin"
1754 bink_decoder_select="blockdsp hpeldsp"
1755 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1756 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1757 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1758 cllc_decoder_select="bswapdsp"
1759 comfortnoise_encoder_select="lpc"
1760 cook_decoder_select="audiodsp mdct sinewin"
1761 cscd_decoder_select="lzo"
1762 cscd_decoder_suggest="zlib"
1763 dca_decoder_select="mdct"
1764 dnxhd_decoder_select="blockdsp idctdsp"
1765 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1766 dvvideo_decoder_select="dvprofile idctdsp"
1767 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1768 dxa_decoder_deps="zlib"
1769 eac3_decoder_select="ac3_decoder"
1770 eac3_encoder_select="ac3_encoder"
1771 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1772 eatgq_decoder_select="aandcttables idctdsp"
1773 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1774 exr_decoder_deps="zlib"
1775 ffv1_decoder_select="golomb rangecoder"
1776 ffv1_encoder_select="rangecoder"
1777 ffvhuff_decoder_select="huffyuv_decoder"
1778 ffvhuff_encoder_select="huffyuv_encoder"
1779 fic_decoder_select="golomb"
1780 flac_decoder_select="golomb"
1781 flac_encoder_select="bswapdsp golomb lpc"
1782 flashsv_decoder_deps="zlib"
1783 flashsv_encoder_deps="zlib"
1784 flashsv2_decoder_deps="zlib"
1785 flv_decoder_select="h263_decoder"
1786 flv_encoder_select="h263_encoder"
1787 fourxm_decoder_select="blockdsp bswapdsp"
1788 fraps_decoder_select="bswapdsp huffman"
1789 g2m_decoder_deps="zlib"
1790 g2m_decoder_select="blockdsp idctdsp"
1791 h261_decoder_select="mpeg_er mpegvideo"
1792 h261_encoder_select="aandcttables mpegvideoenc"
1793 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1794 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1795 h263i_decoder_select="h263_decoder"
1796 h263p_encoder_select="h263_encoder"
1797 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1798 h264_decoder_suggest="error_resilience"
1799 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1800 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1801 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1802 iac_decoder_select="imc_decoder"
1803 imc_decoder_select="bswapdsp fft mdct sinewin"
1804 indeo3_decoder_select="hpeldsp"
1805 interplay_video_decoder_select="hpeldsp"
1806 jpegls_decoder_select="golomb mjpeg_decoder"
1807 jpegls_encoder_select="golomb"
1808 jv_decoder_select="blockdsp"
1809 lagarith_decoder_select="huffyuvdsp"
1810 ljpeg_encoder_select="aandcttables idctdsp"
1811 loco_decoder_select="golomb"
1812 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1813 metasound_decoder_select="lsp mdct sinewin"
1814 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1815 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1816 mjpeg_encoder_select="aandcttables mpegvideoenc"
1817 mjpegb_decoder_select="mjpeg_decoder"
1818 mlp_decoder_select="mlp_parser"
1819 motionpixels_decoder_select="bswapdsp"
1820 mp1_decoder_select="mpegaudio"
1821 mp1float_decoder_select="mpegaudio"
1822 mp2_decoder_select="mpegaudio"
1823 mp2float_decoder_select="mpegaudio"
1824 mp3_decoder_select="mpegaudio"
1825 mp3adu_decoder_select="mpegaudio"
1826 mp3adufloat_decoder_select="mpegaudio"
1827 mp3float_decoder_select="mpegaudio"
1828 mp3on4_decoder_select="mpegaudio"
1829 mp3on4float_decoder_select="mpegaudio"
1830 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1831 mpc8_decoder_select="mpegaudiodsp"
1832 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1833 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1834 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1835 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1836 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1837 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1838 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1839 mpeg4_encoder_select="h263_encoder"
1840 msmpeg4v1_decoder_select="h263_decoder"
1841 msmpeg4v2_decoder_select="h263_decoder"
1842 msmpeg4v2_encoder_select="h263_encoder"
1843 msmpeg4v3_decoder_select="h263_decoder"
1844 msmpeg4v3_encoder_select="h263_encoder"
1845 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1846 mxpeg_decoder_select="mjpeg_decoder"
1847 nellymoser_decoder_select="mdct sinewin"
1848 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1849 nuv_decoder_select="idctdsp lzo"
1850 on2avc_decoder_select="mdct"
1851 opus_decoder_deps="avresample"
1852 png_decoder_deps="zlib"
1853 png_encoder_deps="zlib"
1854 png_encoder_select="huffyuvencdsp"
1855 prores_decoder_select="idctdsp"
1856 prores_encoder_select="fdctdsp"
1857 qcelp_decoder_select="lsp"
1858 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1859 ra_144_encoder_select="audio_frame_queue lpc"
1860 ralf_decoder_select="golomb"
1861 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1862 rv10_encoder_select="h263_encoder"
1863 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1864 rv20_encoder_select="h263_encoder"
1865 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1866 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1867 shorten_decoder_select="golomb"
1868 sipr_decoder_select="lsp"
1869 sp5x_decoder_select="mjpeg_decoder"
1870 svq1_decoder_select="hpeldsp"
1871 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1872 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1873 svq3_decoder_suggest="zlib"
1874 tak_decoder_select="audiodsp"
1875 theora_decoder_select="vp3_decoder"
1876 thp_decoder_select="mjpeg_decoder"
1877 tiff_decoder_suggest="zlib"
1878 tiff_encoder_suggest="zlib"
1879 truehd_decoder_select="mlp_decoder"
1880 truemotion2_decoder_select="bswapdsp"
1881 truespeech_decoder_select="bswapdsp"
1882 tscc_decoder_deps="zlib"
1883 twinvq_decoder_select="mdct lsp sinewin"
1884 utvideo_decoder_select="bswapdsp"
1885 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1886 vble_decoder_select="huffyuvdsp"
1887 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1888 vc1image_decoder_select="vc1_decoder"
1889 vorbis_decoder_select="mdct"
1890 vorbis_encoder_select="mdct"
1891 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1892 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1893 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1894 vp6a_decoder_select="vp6_decoder"
1895 vp6f_decoder_select="vp6_decoder"
1896 vp7_decoder_select="h264pred videodsp"
1897 vp8_decoder_select="h264pred videodsp"
1898 vp9_decoder_select="videodsp"
1899 webp_decoder_select="vp8_decoder"
1900 wmapro_decoder_select="mdct sinewin"
1901 wmav1_decoder_select="mdct sinewin"
1902 wmav1_encoder_select="mdct sinewin"
1903 wmav2_decoder_select="mdct sinewin"
1904 wmav2_encoder_select="mdct sinewin"
1905 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1906 wmv1_decoder_select="h263_decoder"
1907 wmv1_encoder_select="h263_encoder"
1908 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1909 wmv2_encoder_select="h263_encoder"
1910 wmv3_decoder_select="vc1_decoder"
1911 wmv3image_decoder_select="wmv3_decoder"
1912 zerocodec_decoder_deps="zlib"
1913 zlib_decoder_deps="zlib"
1914 zlib_encoder_deps="zlib"
1915 zmbv_decoder_deps="zlib"
1916 zmbv_encoder_deps="zlib"
1917
1918 # hardware accelerators
1919 dxva2_deps="dxva2api_h"
1920 vaapi_deps="va_va_h"
1921 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1922 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1923 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1924
1925 h263_vaapi_hwaccel_deps="vaapi"
1926 h263_vaapi_hwaccel_select="h263_decoder"
1927 h263_vdpau_hwaccel_deps="vdpau"
1928 h263_vdpau_hwaccel_select="h263_decoder"
1929 h264_dxva2_hwaccel_deps="dxva2"
1930 h264_dxva2_hwaccel_select="h264_decoder"
1931 h264_vaapi_hwaccel_deps="vaapi"
1932 h264_vaapi_hwaccel_select="h264_decoder"
1933 h264_vda_hwaccel_deps="vda"
1934 h264_vda_hwaccel_select="h264_decoder"
1935 h264_vda_old_hwaccel_deps="vda"
1936 h264_vda_old_hwaccel_select="h264_decoder"
1937 h264_vdpau_hwaccel_deps="vdpau"
1938 h264_vdpau_hwaccel_select="h264_decoder"
1939 mpeg1_vdpau_hwaccel_deps="vdpau"
1940 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1941 mpeg2_dxva2_hwaccel_deps="dxva2"
1942 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1943 mpeg2_vaapi_hwaccel_deps="vaapi"
1944 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1945 mpeg2_vdpau_hwaccel_deps="vdpau"
1946 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1947 mpeg4_vaapi_hwaccel_deps="vaapi"
1948 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1949 mpeg4_vdpau_hwaccel_deps="vdpau"
1950 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1951 vc1_dxva2_hwaccel_deps="dxva2"
1952 vc1_dxva2_hwaccel_select="vc1_decoder"
1953 vc1_vaapi_hwaccel_deps="vaapi"
1954 vc1_vaapi_hwaccel_select="vc1_decoder"
1955 vc1_vdpau_hwaccel_deps="vdpau"
1956 vc1_vdpau_hwaccel_select="vc1_decoder"
1957 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1958 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1959 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1960
1961 # parsers
1962 h264_parser_select="h264_decoder"
1963 mpegvideo_parser_select="mpegvideo"
1964 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1965 vc1_parser_select="mpegvideo"
1966
1967 # external libraries
1968 libfaac_encoder_deps="libfaac"
1969 libfaac_encoder_select="audio_frame_queue"
1970 libfdk_aac_decoder_deps="libfdk_aac"
1971 libfdk_aac_encoder_deps="libfdk_aac"
1972 libfdk_aac_encoder_select="audio_frame_queue"
1973 libgsm_decoder_deps="libgsm"
1974 libgsm_encoder_deps="libgsm"
1975 libgsm_ms_decoder_deps="libgsm"
1976 libgsm_ms_encoder_deps="libgsm"
1977 libilbc_decoder_deps="libilbc"
1978 libilbc_encoder_deps="libilbc"
1979 libmp3lame_encoder_deps="libmp3lame"
1980 libmp3lame_encoder_select="audio_frame_queue"
1981 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1982 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1983 libopencore_amrnb_encoder_select="audio_frame_queue"
1984 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1985 libopenjpeg_decoder_deps="libopenjpeg"
1986 libopenjpeg_encoder_deps="libopenjpeg"
1987 libopus_decoder_deps="libopus"
1988 libopus_encoder_deps="libopus"
1989 libopus_encoder_select="audio_frame_queue"
1990 libschroedinger_decoder_deps="libschroedinger"
1991 libschroedinger_encoder_deps="libschroedinger"
1992 libspeex_decoder_deps="libspeex"
1993 libspeex_encoder_deps="libspeex"
1994 libspeex_encoder_select="audio_frame_queue"
1995 libtheora_encoder_deps="libtheora"
1996 libtwolame_encoder_deps="libtwolame"
1997 libvo_aacenc_encoder_deps="libvo_aacenc"
1998 libvo_aacenc_encoder_select="audio_frame_queue"
1999 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2000 libvorbis_encoder_deps="libvorbis"
2001 libvorbis_encoder_select="audio_frame_queue"
2002 libvpx_vp8_decoder_deps="libvpx"
2003 libvpx_vp8_encoder_deps="libvpx"
2004 libvpx_vp9_decoder_deps="libvpx"
2005 libvpx_vp9_encoder_deps="libvpx"
2006 libwavpack_encoder_deps="libwavpack"
2007 libwebp_encoder_deps="libwebp"
2008 libx264_encoder_deps="libx264"
2009 libx265_encoder_deps="libx265"
2010 libxavs_encoder_deps="libxavs"
2011 libxvid_encoder_deps="libxvid"
2012
2013 # demuxers / muxers
2014 ac3_demuxer_select="ac3_parser"
2015 asf_demuxer_select="riffdec"
2016 asf_muxer_select="riffenc"
2017 asf_stream_muxer_select="asf_muxer"
2018 avi_demuxer_select="riffdec"
2019 avi_muxer_select="riffenc"
2020 avisynth_demuxer_deps="avisynth"
2021 avisynth_demuxer_select="riffdec"
2022 caf_demuxer_select="riffdec"
2023 dirac_demuxer_select="dirac_parser"
2024 dv_demuxer_select="dvprofile"
2025 dv_muxer_select="dvprofile"
2026 dxa_demuxer_select="riffdec"
2027 eac3_demuxer_select="ac3_parser"
2028 f4v_muxer_select="mov_muxer"
2029 flac_demuxer_select="flac_parser"
2030 hds_muxer_select="flv_muxer"
2031 hls_muxer_select="mpegts_muxer"
2032 ipod_muxer_select="mov_muxer"
2033 ismv_muxer_select="mov_muxer"
2034 matroska_audio_muxer_select="matroska_muxer"
2035 matroska_demuxer_select="riffdec"
2036 matroska_demuxer_suggest="bzlib lzo zlib"
2037 matroska_muxer_select="riffenc"
2038 mmf_muxer_select="riffenc"
2039 mov_demuxer_select="riffdec"
2040 mov_demuxer_suggest="zlib"
2041 mov_muxer_select="riffenc rtpenc_chain"
2042 mp3_demuxer_select="mpegaudio_parser"
2043 mp4_muxer_select="mov_muxer"
2044 mpegts_muxer_select="adts_muxer latm_muxer"
2045 mpegtsraw_demuxer_select="mpegts_demuxer"
2046 mxf_d10_muxer_select="mxf_muxer"
2047 nut_muxer_select="riffenc"
2048 nuv_demuxer_select="riffdec"
2049 ogg_demuxer_select="golomb"
2050 psp_muxer_select="mov_muxer"
2051 rtp_demuxer_select="sdp_demuxer"
2052 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2053 rtsp_demuxer_select="http_protocol rtpdec"
2054 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2055 sap_demuxer_select="sdp_demuxer"
2056 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2057 sdp_demuxer_select="rtpdec"
2058 smoothstreaming_muxer_select="ismv_muxer"
2059 spdif_muxer_select="aac_parser"
2060 tak_demuxer_select="tak_parser"
2061 tg2_muxer_select="mov_muxer"
2062 tgp_muxer_select="mov_muxer"
2063 w64_demuxer_select="wav_demuxer"
2064 wav_demuxer_select="riffdec"
2065 wav_muxer_select="riffenc"
2066 webm_muxer_select="riffenc"
2067 wtv_demuxer_select="riffdec"
2068 xmv_demuxer_select="riffdec"
2069 xwma_demuxer_select="riffdec"
2070
2071 # indevs / outdevs
2072 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2073 alsa_outdev_deps="alsa_asoundlib_h"
2074 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2075 dv1394_indev_deps="dv1394"
2076 dv1394_indev_select="dv_demuxer"
2077 fbdev_indev_deps="linux_fb_h"
2078 jack_indev_deps="jack_jack_h pthreads"
2079 libcdio_indev_deps="libcdio"
2080 libdc1394_indev_deps="libdc1394"
2081 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2082 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2083 pulse_indev_deps="libpulse"
2084 sndio_indev_deps="sndio_h"
2085 sndio_outdev_deps="sndio_h"
2086 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2087 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2088 vfwcap_indev_extralibs="-lavicap32"
2089 x11grab_indev_deps="x11grab XShmCreateImage"
2090
2091 # protocols
2092 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2093 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2094 ffrtmpcrypt_protocol_select="tcp_protocol"
2095 ffrtmphttp_protocol_deps="!librtmp_protocol"
2096 ffrtmphttp_protocol_select="http_protocol"
2097 gopher_protocol_select="network"
2098 http_protocol_select="tcp_protocol"
2099 httpproxy_protocol_select="tcp_protocol"
2100 https_protocol_select="tls_protocol"
2101 librtmp_protocol_deps="librtmp"
2102 librtmpe_protocol_deps="librtmp"
2103 librtmps_protocol_deps="librtmp"
2104 librtmpt_protocol_deps="librtmp"
2105 librtmpte_protocol_deps="librtmp"
2106 mmsh_protocol_select="http_protocol"
2107 mmst_protocol_select="network"
2108 rtmp_protocol_deps="!librtmp_protocol"
2109 rtmp_protocol_select="tcp_protocol"
2110 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2111 rtmps_protocol_deps="!librtmp_protocol"
2112 rtmps_protocol_select="tls_protocol"
2113 rtmpt_protocol_select="ffrtmphttp_protocol"
2114 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2115 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2116 rtp_protocol_select="udp_protocol"
2117 sctp_protocol_deps="struct_sctp_event_subscribe"
2118 sctp_protocol_select="network"
2119 srtp_protocol_select="rtp_protocol"
2120 tcp_protocol_select="network"
2121 tls_protocol_deps_any="openssl gnutls"
2122 tls_protocol_select="tcp_protocol"
2123 udp_protocol_select="network"
2124 unix_protocol_deps="sys_un_h"
2125 unix_protocol_select="network"
2126
2127 # filters
2128 blackframe_filter_deps="gpl"
2129 boxblur_filter_deps="gpl"
2130 bs2b_filter_deps="libbs2b"
2131 cropdetect_filter_deps="gpl"
2132 delogo_filter_deps="gpl"
2133 drawtext_filter_deps="libfreetype"
2134 frei0r_filter_deps="frei0r dlopen"
2135 frei0r_filter_extralibs='$ldl'
2136 frei0r_src_filter_deps="frei0r dlopen"
2137 frei0r_src_filter_extralibs='$ldl'
2138 hqdn3d_filter_deps="gpl"
2139 interlace_filter_deps="gpl"
2140 ocv_filter_deps="libopencv"
2141 resample_filter_deps="avresample"
2142 scale_filter_deps="swscale"
2143
2144 # examples
2145 avcodec_example_deps="avcodec avutil"
2146 filter_audio_example_deps="avfilter avutil"
2147 metadata_example_deps="avformat avutil"
2148 output_example_deps="avcodec avformat avutil swscale"
2149 transcode_aac_example_deps="avcodec avformat avresample"
2150
2151 # libraries, in linking order
2152 avcodec_deps="avutil"
2153 avdevice_deps="avformat avcodec avutil"
2154 avfilter_deps="avutil"
2155 avformat_deps="avcodec avutil"
2156 avresample_deps="avutil"
2157 swscale_deps="avutil"
2158
2159 # programs
2160 avconv_deps="avcodec avfilter avformat avresample swscale"
2161 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2162                fps_filter null_filter resample_filter scale_filter
2163                setpts_filter trim_filter"
2164 avplay_deps="avcodec avformat avresample swscale sdl"
2165 avplay_libs='$sdl_libs'
2166 avplay_select="rdft"
2167 avprobe_deps="avcodec avformat"
2168
2169 # documentation
2170 pod2man_deps="doc"
2171 texi2html_deps="doc"
2172
2173 # default parameters
2174
2175 logfile="config.log"
2176
2177 # installation paths
2178 prefix_default="/usr/local"
2179 bindir_default='${prefix}/bin'
2180 datadir_default='${prefix}/share/avconv'
2181 docdir_default='${prefix}/share/doc/libav'
2182 incdir_default='${prefix}/include'
2183 libdir_default='${prefix}/lib'
2184 mandir_default='${prefix}/share/man'
2185 shlibdir_default="$libdir_default"
2186
2187 # toolchain
2188 ar_default="ar"
2189 cc_default="gcc"
2190 host_cc_default="gcc"
2191 cp_f="cp -f"
2192 ln_s="ln -s -f"
2193 nm_default="nm -g"
2194 objformat="elf"
2195 pkg_config_default=pkg-config
2196 ranlib="ranlib"
2197 strip="strip"
2198 yasmexe="yasm"
2199
2200 nogas=":"
2201
2202 # machine
2203 arch_default=$(uname -m)
2204 cpu="generic"
2205 intrinsics="none"
2206
2207 # OS
2208 target_os_default=$(tolower $(uname -s))
2209 host_os=$target_os_default
2210
2211 # configurable options
2212 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2213
2214 enable asm
2215 enable debug
2216 enable doc
2217 enable optimizations
2218 enable safe_bitstream_reader
2219 enable static
2220 enable swscale_alpha
2221
2222 # By default, enable only those hwaccels that have no external dependencies.
2223 enable dxva2 vdpau
2224
2225 # build settings
2226 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2227 LIBPREF="lib"
2228 LIBSUF=".a"
2229 FULLNAME='$(NAME)$(BUILDSUF)'
2230 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2231 SLIBPREF="lib"
2232 SLIBSUF=".so"
2233 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2234 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2235 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2236 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2237 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2238 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2239
2240 asflags_filter=echo
2241 cflags_filter=echo
2242 ldflags_filter=echo
2243
2244 AS_C='-c'
2245 AS_O='-o $@'
2246 CC_C='-c'
2247 CC_E='-E -o $@'
2248 CC_O='-o $@'
2249 LD_O='-o $@'
2250 LD_LIB='-l%'
2251 LD_PATH='-L'
2252 HOSTCC_C='-c'
2253 HOSTCC_E='-E -o $@'
2254 HOSTCC_O='-o $@'
2255 HOSTLD_O='-o $@'
2256
2257 host_libs='-lm'
2258 host_cflags_filter=echo
2259 host_ldflags_filter=echo
2260
2261 target_path='$(CURDIR)'
2262
2263 # since the object filename is not given with the -MM flag, the compiler
2264 # is only able to print the basename, and we must add the path ourselves
2265 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2266 DEPFLAGS='-MM'
2267
2268 # find source path
2269 if test -f configure; then
2270     source_path=.
2271 else
2272     source_path=$(cd $(dirname "$0"); pwd)
2273     echo "$source_path" | grep -q '[[:blank:]]' &&
2274         die "Out of tree builds are impossible with whitespace in source path."
2275     test -e "$source_path/config.h" &&
2276         die "Out of tree builds are impossible with config.h in source dir."
2277 fi
2278
2279 for v in "$@"; do
2280     r=${v#*=}
2281     l=${v%"$r"}
2282     r=$(sh_quote "$r")
2283     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2284 done
2285
2286 find_things(){
2287     thing=$1
2288     pattern=$2
2289     file=$source_path/$3
2290     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2291 }
2292
2293 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2294 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2295 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2296 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2297 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2298 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2299 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2300 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2301 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2302 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2303 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2304
2305 ALL_COMPONENTS="
2306     $BSF_LIST
2307     $DECODER_LIST
2308     $DEMUXER_LIST
2309     $ENCODER_LIST
2310     $FILTER_LIST
2311     $HWACCEL_LIST
2312     $INDEV_LIST
2313     $MUXER_LIST
2314     $OUTDEV_LIST
2315     $PARSER_LIST
2316     $PROTOCOL_LIST
2317 "
2318
2319 for n in $COMPONENT_LIST; do
2320     v=$(toupper ${n%s})_LIST
2321     eval enable \$$v
2322     eval ${n}_if_any="\$$v"
2323 done
2324
2325 enable $ARCH_EXT_LIST
2326
2327 die_unknown(){
2328     echo "Unknown option \"$1\"."
2329     echo "See $0 --help for available options."
2330     exit 1
2331 }
2332
2333 print_3_columns() {
2334     cat | tr ' ' '\n' | sort | pr -r -3 -t
2335 }
2336
2337 show_list() {
2338     suffix=_$1
2339     shift
2340     echo $* | sed s/$suffix//g | print_3_columns
2341     exit 0
2342 }
2343
2344 rand_list(){
2345     IFS=', '
2346     set -- $*
2347     unset IFS
2348     for thing; do
2349         comp=${thing%:*}
2350         prob=${thing#$comp}
2351         prob=${prob#:}
2352         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2353         echo "prob ${prob:-0.5}"
2354         printf '%s\n' $comp
2355     done
2356 }
2357
2358 do_random(){
2359     action=$1
2360     shift
2361     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2362     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2363 }
2364
2365 for opt do
2366     optval="${opt#*=}"
2367     case "$opt" in
2368         --extra-ldflags=*)
2369             add_ldflags $optval
2370         ;;
2371         --extra-ldexeflags=*)
2372             add_ldexeflags $optval
2373         ;;
2374         --extra-libs=*)
2375             add_extralibs $optval
2376         ;;
2377         --disable-devices)
2378             disable $INDEV_LIST $OUTDEV_LIST
2379         ;;
2380         --enable-debug=*)
2381             debuglevel="$optval"
2382         ;;
2383         --disable-programs)
2384             disable $PROGRAM_LIST
2385         ;;
2386         --disable-everything)
2387             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2388         ;;
2389         --disable-all)
2390             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2391             disable $LIBRARY_LIST $PROGRAM_LIST doc
2392         ;;
2393         --enable-random|--disable-random)
2394             action=${opt%%-random}
2395             do_random ${action#--} $COMPONENT_LIST
2396         ;;
2397         --enable-random=*|--disable-random=*)
2398             action=${opt%%-random=*}
2399             do_random ${action#--} $optval
2400         ;;
2401         --enable-*=*|--disable-*=*)
2402             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2403             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2404             eval list=\$$(toupper $thing)_LIST
2405             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2406             $action $(filter "$name" $list)
2407         ;;
2408         --enable-avserver|--disable-avserver*)
2409             warn "avserver has been removed, the ${opt} option is only"\
2410                  "provided for compatibility and will be removed in the future"
2411         ;;
2412         --enable-?*|--disable-?*)
2413             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2414             if is_in $option $COMPONENT_LIST; then
2415                 test $action = disable && action=unset
2416                 eval $action \$$(toupper ${option%s})_LIST
2417             elif is_in $option $CMDLINE_SELECT; then
2418                 $action $option
2419             else
2420                 die_unknown $opt
2421             fi
2422         ;;
2423         --list-*)
2424             NAME="${opt#--list-}"
2425             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2426             NAME=${NAME%s}
2427             eval show_list $NAME \$$(toupper $NAME)_LIST
2428         ;;
2429         --help|-h) show_help
2430         ;;
2431         *)
2432             optname="${opt%%=*}"
2433             optname="${optname#--}"
2434             optname=$(echo "$optname" | sed 's/-/_/g')
2435             if is_in $optname $CMDLINE_SET; then
2436                 eval $optname='$optval'
2437             elif is_in $optname $CMDLINE_APPEND; then
2438                 append $optname "$optval"
2439             else
2440                 die_unknown $opt
2441             fi
2442         ;;
2443     esac
2444 done
2445
2446 disabled logging && logfile=/dev/null
2447
2448 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2449 set >> $logfile
2450
2451 test -n "$cross_prefix" && enable cross_compile
2452
2453 if enabled cross_compile; then
2454     test -n "$arch" && test -n "$target_os" ||
2455         die "Must specify target arch and OS when cross-compiling"
2456 fi
2457
2458 ar_default="${cross_prefix}${ar_default}"
2459 cc_default="${cross_prefix}${cc_default}"
2460 nm_default="${cross_prefix}${nm_default}"
2461 pkg_config_default="${cross_prefix}${pkg_config_default}"
2462 ranlib="${cross_prefix}${ranlib}"
2463 strip="${cross_prefix}${strip}"
2464
2465 sysinclude_default="${sysroot}/usr/include"
2466
2467 case "$toolchain" in
2468     clang-asan)
2469         cc_default="clang"
2470         add_cflags  -fsanitize=address
2471         add_ldflags -fsanitize=address
2472     ;;
2473     clang-tsan)
2474         cc_default="clang"
2475         add_cflags  -fsanitize=thread -pie
2476         add_ldflags -fsanitize=thread -pie
2477     ;;
2478     clang-usan)
2479         cc_default="clang"
2480         add_cflags  -fsanitize=undefined -O1
2481         add_ldflags -fsanitize=undefined
2482     ;;
2483     gcc-asan)
2484         cc_default="gcc"
2485         add_cflags  -fsanitize=address
2486         add_ldflags -fsanitize=address
2487     ;;
2488     gcc-tsan)
2489         cc_default="gcc"
2490         add_cflags  -fsanitize=thread -pie -fPIC
2491         add_ldflags -fsanitize=thread -pie -fPIC
2492     ;;
2493     gcc-usan)
2494         cc_default="gcc"
2495         add_cflags  -fsanitize=undefined
2496         add_ldflags -fsanitize=undefined
2497     ;;
2498     valgrind-massif)
2499         target_exec_default="valgrind"
2500         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2501     ;;
2502     valgrind-memcheck)
2503         target_exec_default="valgrind"
2504         target_exec_args="--track-origins=yes --leak-check=full"
2505     ;;
2506     msvc)
2507         # Check whether the current MSVC version needs the C99 converter.
2508         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2509         # support enough of C99 to build libav. Default to the new
2510         # behaviour if the regexp was unable to match anything, since this
2511         # successfully parses the version number of existing supported
2512         # versions that require the converter (MSVC 2010 and 2012).
2513         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2514         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2515             cc_default="cl"
2516         else
2517             cc_default="c99wrap cl"
2518         fi
2519         ld_default="link"
2520         nm_default="dumpbin -symbols"
2521         ar_default="lib"
2522         target_os_default="win32"
2523         # Use a relative path for TMPDIR. This makes sure all the
2524         # ffconf temp files are written with a relative path, avoiding
2525         # issues with msys/win32 path conversion for MSVC parameters
2526         # such as -Fo<file> or -out:<file>.
2527         TMPDIR=.
2528     ;;
2529     icl)
2530         cc_default="icl"
2531         ld_default="xilink"
2532         nm_default="dumpbin -symbols"
2533         ar_default="xilib"
2534         target_os_default="win32"
2535         TMPDIR=.
2536     ;;
2537     gcov)
2538         add_cflags  -fprofile-arcs -ftest-coverage
2539         add_ldflags -fprofile-arcs -ftest-coverage
2540     ;;
2541     hardened)
2542         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2543         add_ldflags -Wl,-z,relro -Wl,-z,now
2544     ;;
2545     ?*)
2546         die "Unknown toolchain $toolchain"
2547     ;;
2548 esac
2549
2550 set_default arch cc pkg_config sysinclude target_exec target_os
2551 enabled cross_compile || host_cc_default=$cc
2552 set_default host_cc
2553
2554 if ! $pkg_config --version >/dev/null 2>&1; then
2555     warn "$pkg_config not found, library detection may fail."
2556     pkg_config=false
2557 fi
2558
2559 exesuf() {
2560     case $1 in
2561         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2562     esac
2563 }
2564
2565 EXESUF=$(exesuf $target_os)
2566 HOSTEXESUF=$(exesuf $host_os)
2567
2568 # set temporary file name
2569 : ${TMPDIR:=$TEMPDIR}
2570 : ${TMPDIR:=$TMP}
2571 : ${TMPDIR:=/tmp}
2572
2573 if ! check_cmd mktemp -u XXXXXX; then
2574     # simple replacement for missing mktemp
2575     # NOT SAFE FOR GENERAL USE
2576     mktemp(){
2577         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2578     }
2579 fi
2580
2581 tmpfile(){
2582     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2583         (set -C; exec > $tmp) 2>/dev/null ||
2584         die "Unable to create temporary file in $TMPDIR."
2585     append TMPFILES $tmp
2586     eval $1=$tmp
2587 }
2588
2589 trap 'rm -f -- $TMPFILES' EXIT
2590
2591 tmpfile TMPASM .asm
2592 tmpfile TMPC   .c
2593 tmpfile TMPE   $EXESUF
2594 tmpfile TMPH   .h
2595 tmpfile TMPO   .o
2596 tmpfile TMPS   .S
2597 tmpfile TMPSH  .sh
2598 tmpfile TMPV   .ver
2599
2600 unset -f mktemp
2601
2602 chmod +x $TMPE
2603
2604 # make sure we can execute files in $TMPDIR
2605 cat > $TMPSH 2>> $logfile <<EOF
2606 #! /bin/sh
2607 EOF
2608 chmod +x $TMPSH >> $logfile 2>&1
2609 if ! $TMPSH >> $logfile 2>&1; then
2610     cat <<EOF
2611 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2612 variable to another directory and make sure that it is not mounted noexec.
2613 EOF
2614     die "Sanity test failed."
2615 fi
2616
2617 ccc_flags(){
2618     for flag; do
2619         case $flag in
2620             -std=c99)           echo -c99                       ;;
2621             -mcpu=*)            echo -arch ${flag#*=}           ;;
2622             -mieee)             echo -ieee                      ;;
2623             -O*|-fast)          echo $flag                      ;;
2624             -fno-math-errno)    echo -assume nomath_errno       ;;
2625             -g)                 echo -g3                        ;;
2626             -Wall)              echo -msg_enable level2         ;;
2627             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2628             -Wl,*)              echo $flag                      ;;
2629             -f*|-W*)                                            ;;
2630             *)                  echo $flag                      ;;
2631         esac
2632    done
2633 }
2634
2635 cparser_flags(){
2636     for flag; do
2637         case $flag in
2638             -Wno-switch)             echo -Wno-switch-enum ;;
2639             -Wno-format-zero-length) ;;
2640             -Wdisabled-optimization) ;;
2641             -Wno-pointer-sign)       echo -Wno-other ;;
2642             *)                       echo $flag ;;
2643         esac
2644     done
2645 }
2646
2647 msvc_common_flags(){
2648     for flag; do
2649         case $flag in
2650             # In addition to specifying certain flags under the compiler
2651             # specific filters, they must be specified here as well or else the
2652             # generic catch all at the bottom will print the original flag.
2653             -Wall)                ;;
2654             -std=c99)             ;;
2655             # Common flags
2656             -fomit-frame-pointer) ;;
2657             -g)                   echo -Z7 ;;
2658             -fno-math-errno)      ;;
2659             -fno-common)          ;;
2660             -fno-signed-zeros)    ;;
2661             -fPIC)                ;;
2662             -mthumb)              ;;
2663             -march=*)             ;;
2664             -lz)                  echo zlib.lib ;;
2665             -lavifil32)           echo vfw32.lib ;;
2666             -lavicap32)           echo vfw32.lib user32.lib ;;
2667             -l*)                  echo ${flag#-l}.lib ;;
2668             *)                    echo $flag ;;
2669         esac
2670     done
2671 }
2672
2673 msvc_flags(){
2674     msvc_common_flags "$@"
2675     for flag; do
2676         case $flag in
2677             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2678                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2679                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2680                                        -wd4273 ;;
2681         esac
2682     done
2683 }
2684
2685 icl_flags(){
2686     msvc_common_flags "$@"
2687     for flag; do
2688         case $flag in
2689             # Despite what Intel's documentation says -Wall, which is supported
2690             # on Windows, does enable remarks so disable them here.
2691             -Wall)                echo $flag -Qdiag-disable:remark ;;
2692             -std=c99)             echo -Qstd=c99 ;;
2693         esac
2694     done
2695 }
2696
2697 pgi_flags(){
2698     for flag; do
2699         case $flag in
2700             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2701             -fomit-frame-pointer) echo -Mnoframe ;;
2702             -g)                   echo -gopt ;;
2703             *)                    echo $flag ;;
2704         esac
2705     done
2706 }
2707
2708 suncc_flags(){
2709     for flag; do
2710         case $flag in
2711             -march=*|-mcpu=*)
2712                 case "${flag#*=}" in
2713                     native)                   echo -xtarget=native       ;;
2714                     v9|niagara)               echo -xarch=sparc          ;;
2715                     ultrasparc)               echo -xarch=sparcvis       ;;
2716                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2717                     i586|pentium)             echo -xchip=pentium        ;;
2718                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2719                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2720                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2721                     pentium4*)          echo -xtarget=pentium4           ;;
2722                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2723                     *-sse3)             echo -xarch=sse3                 ;;
2724                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2725                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2726                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2727                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2728                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2729                     k8|opteron|athlon64|athlon-fx)
2730                                                echo -xarch=sse2a         ;;
2731                     athlon*)                   echo -xarch=pentium_proa  ;;
2732                 esac
2733                 ;;
2734             -std=c99)             echo -xc99              ;;
2735             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2736             -fPIC)                echo -KPIC -xcode=pic32 ;;
2737             -W*,*)                echo $flag              ;;
2738             -f*-*|-W*|-mimpure-text)                      ;;
2739             -shared)              echo -G                 ;;
2740             *)                    echo $flag              ;;
2741         esac
2742     done
2743 }
2744
2745 tms470_flags(){
2746     for flag; do
2747         case $flag in
2748             -march=*|-mcpu=*)
2749                 case "${flag#*=}" in
2750                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2751                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2752                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2753                     armv6*|arm11*)          echo -mv=6   ;;
2754                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2755                                             echo -mv=5e  ;;
2756                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2757                 esac
2758                 ;;
2759             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2760             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2761             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2762             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2763             -msoft-float)   echo --float_support=vfplib       ;;
2764             -O[0-3]|-mf=*)  echo $flag                        ;;
2765             -g)             echo -g -mn                       ;;
2766             -pds=*)         echo $flag                        ;;
2767             -D*|-I*)        echo $flag                        ;;
2768             --gcc|--abi=*)  echo $flag                        ;;
2769             -me)            echo $flag                        ;;
2770         esac
2771     done
2772 }
2773
2774 probe_cc(){
2775     pfx=$1
2776     _cc=$2
2777
2778     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2779     unset _ld_o _ldflags _ld_lib _ld_path
2780     unset _depflags _DEPCMD _DEPFLAGS
2781     _flags_filter=echo
2782
2783     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2784         _type=llvm_gcc
2785         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2786         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2787         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2788         _cflags_speed='-O3'
2789         _cflags_size='-Os'
2790     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2791         _type=gcc
2792         gcc_version=$($_cc --version | head -n1)
2793         gcc_basever=$($_cc -dumpversion)
2794         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2795         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2796         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2797         if ! $_cc -dumpversion | grep -q '^2\.'; then
2798             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2799         fi
2800         _cflags_speed='-O3'
2801         _cflags_size='-Os'
2802     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2803         _type=icc
2804         _ident=$($_cc --version | head -n1)
2805         _depflags='-MMD'
2806         _cflags_speed='-O3'
2807         _cflags_size='-Os'
2808         _cflags_noopt='-O1'
2809     elif $_cc -v 2>&1 | grep -q xlc; then
2810         _type=xlc
2811         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2812         _cflags_speed='-O5'
2813         _cflags_size='-O5 -qcompact'
2814     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2815         _type=ccc
2816         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2817         _DEPFLAGS='-M'
2818         _cflags_speed='-fast'
2819         _cflags_size='-O1'
2820         _flags_filter=ccc_flags
2821     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2822         test -d "$sysroot" || die "No valid sysroot specified."
2823         _type=armcc
2824         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2825         armcc_conf="$PWD/armcc.conf"
2826         $_cc --arm_linux_configure                 \
2827              --arm_linux_config_file="$armcc_conf" \
2828              --configure_sysroot="$sysroot"        \
2829              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2830              die "Error creating armcc configuration file."
2831         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2832         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2833         as_default="${cross_prefix}gcc"
2834         _depflags='-MMD'
2835         _cflags_speed='-O3'
2836         _cflags_size='-Os'
2837     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2838         _type=tms470
2839         _ident=$($_cc -version | head -n1 | tr -s ' ')
2840         _flags='--gcc --abi=eabi -me'
2841         _cc_e='-ppl -fe=$@'
2842         _cc_o='-fe=$@'
2843         _depflags='-ppa -ppd=$(@:.o=.d)'
2844         _cflags_speed='-O3 -mf=5'
2845         _cflags_size='-O3 -mf=2'
2846         _flags_filter=tms470_flags
2847     elif $_cc -v 2>&1 | grep -q clang; then
2848         _type=clang
2849         _ident=$($_cc --version | head -n1)
2850         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2851         _cflags_speed='-O3'
2852         _cflags_size='-Os'
2853     elif $_cc -V 2>&1 | grep -q Sun; then
2854         _type=suncc
2855         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2856         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2857         _DEPFLAGS='-xM1 -xc99'
2858         _ldflags='-std=c99'
2859         _cflags_speed='-O5'
2860         _cflags_size='-O5 -xspace'
2861         _flags_filter=suncc_flags
2862     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2863         _type=pathscale
2864         _ident=$($_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'
2869     elif $_cc -v 2>&1 | grep -q Open64; then
2870         _type=open64
2871         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2872         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2873         _cflags_speed='-O2'
2874         _cflags_size='-Os'
2875         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2876     elif $_cc -V 2>&1 | grep -q Portland; then
2877         _type=pgi
2878         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2879         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2880         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2881         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2882         _cflags_noopt="-O1"
2883         _flags_filter=pgi_flags
2884     elif $_cc 2>&1 | grep -q Microsoft; then
2885         _type=msvc
2886         _ident=$($cc 2>&1 | head -n1)
2887         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2888         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2889         _cflags_speed="-O2"
2890         _cflags_size="-O1"
2891         if $_cc 2>&1 | grep -q Linker; then
2892             _ld_o='-out:$@'
2893         else
2894             _ld_o='-Fe$@'
2895         fi
2896         _cc_o='-Fo$@'
2897         _cc_e='-P -Fi$@'
2898         _flags_filter=msvc_flags
2899         _ld_lib='lib%.a'
2900         _ld_path='-libpath:'
2901         _flags='-nologo'
2902         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2903         if [ $pfx = hostcc ]; then
2904             append _cflags -Dsnprintf=_snprintf
2905         fi
2906     elif $_cc 2>&1 | grep -q Intel; then
2907         _type=icl
2908         _ident=$($cc 2>&1 | head -n1)
2909         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2910         # Not only is O3 broken on 13.x+ but it is slower on all previous
2911         # versions (tested) as well.
2912         _cflags_speed="-O2"
2913         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2914         if $_cc 2>&1 | grep -q Linker; then
2915             _ld_o='-out:$@'
2916         else
2917             _ld_o='-Fe$@'
2918         fi
2919         _cc_o='-Fo$@'
2920         _cc_e='-P'
2921         _flags_filter=icl_flags
2922         _ld_lib='lib%.a'
2923         _ld_path='-libpath:'
2924         # -Qdiag-error to make icl error when seeing certain unknown arguments
2925         _flags='-nologo -Qdiag-error:4044,10157'
2926         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2927         # with MSVC which enables it by default.
2928         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2929         if [ $pfx = hostcc ]; then
2930             append _cflags -Dsnprintf=_snprintf
2931         fi
2932     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2933         _type=cparser
2934         _ident=$($_cc --version | head -n1)
2935         _depflags='-MMD'
2936         _cflags_speed='-O4'
2937         _cflags_size='-O2'
2938         _flags_filter=cparser_flags
2939     fi
2940
2941     eval ${pfx}_type=\$_type
2942     eval ${pfx}_ident=\$_ident
2943 }
2944
2945 set_ccvars(){
2946     eval ${1}_C=\${_cc_c-\${${1}_C}}
2947     eval ${1}_E=\${_cc_e-\${${1}_E}}
2948     eval ${1}_O=\${_cc_o-\${${1}_O}}
2949
2950     if [ -n "$_depflags" ]; then
2951         eval ${1}_DEPFLAGS=\$_depflags
2952     else
2953         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2954         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2955         eval DEP${1}FLAGS=\$_flags
2956     fi
2957 }
2958
2959 probe_cc cc "$cc"
2960 cflags_filter=$_flags_filter
2961 cflags_speed=$_cflags_speed
2962 cflags_size=$_cflags_size
2963 cflags_noopt=$_cflags_noopt
2964 add_cflags $_flags $_cflags
2965 cc_ldflags=$_ldflags
2966 set_ccvars CC
2967
2968 probe_cc hostcc "$host_cc"
2969 host_cflags_filter=$_flags_filter
2970 add_host_cflags  $_flags $_cflags
2971 set_ccvars HOSTCC
2972
2973 test -n "$cc_type" && enable $cc_type ||
2974     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2975
2976 : ${as_default:=$cc}
2977 : ${dep_cc_default:=$cc}
2978 : ${ld_default:=$cc}
2979 : ${host_ld_default:=$host_cc}
2980 set_default ar as dep_cc ld host_ld
2981
2982 probe_cc as "$as"
2983 asflags_filter=$_flags_filter
2984 add_asflags $_flags $_cflags
2985 set_ccvars AS
2986
2987 probe_cc ld "$ld"
2988 ldflags_filter=$_flags_filter
2989 add_ldflags $_flags $_ldflags
2990 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2991 LD_O=${_ld_o-$LD_O}
2992 LD_LIB=${_ld_lib-$LD_LIB}
2993 LD_PATH=${_ld_path-$LD_PATH}
2994
2995 probe_cc hostld "$host_ld"
2996 host_ldflags_filter=$_flags_filter
2997 add_host_ldflags $_flags $_ldflags
2998 HOSTLD_O=${_ld_o-$HOSTLD_O}
2999
3000 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3001     probe_cc depcc "$dep_cc"
3002     CCDEP=${_DEPCMD:-$DEPCMD}
3003     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3004     DEPCCFLAGS=$_flags
3005 fi
3006
3007 if $ar 2>&1 | grep -q Microsoft; then
3008     arflags="-nologo"
3009     ar_o='-out:$@'
3010 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3011     arflags="rq"
3012     ar_o='$@'
3013 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3014     arflags='-Xany -r -c'
3015     ar_o='$@'
3016 else
3017     arflags="rc"
3018     ar_o='$@'
3019 fi
3020
3021 add_cflags $extra_cflags
3022 add_asflags $extra_cflags
3023
3024 if test -n "$sysroot"; then
3025     case "$cc_type" in
3026         gcc|llvm_gcc|clang)
3027             add_cppflags --sysroot="$sysroot"
3028             add_ldflags --sysroot="$sysroot"
3029         ;;
3030         tms470)
3031             add_cppflags -I"$sysinclude"
3032             add_ldflags  --sysroot="$sysroot"
3033         ;;
3034     esac
3035 fi
3036
3037 if test "$cpu" = host; then
3038     enabled cross_compile &&
3039         die "--cpu=host makes no sense when cross-compiling."
3040
3041     case "$cc_type" in
3042         gcc|llvm_gcc)
3043             check_native(){
3044                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3045                 sed -n "/cc1.*$1=/{
3046                             s/.*$1=\\([^ ]*\\).*/\\1/
3047                             p
3048                             q
3049                         }" $TMPE
3050             }
3051             cpu=$(check_native -march || check_native -mcpu)
3052         ;;
3053     esac
3054
3055     test "${cpu:-host}" = host &&
3056         die "--cpu=host not supported with compiler $cc"
3057 fi
3058
3059 # Deal with common $arch aliases
3060 case "$arch" in
3061     aarch64|arm64)
3062         arch="aarch64"
3063     ;;
3064     arm*)
3065         arch="arm"
3066     ;;
3067     mips*|IP*)
3068         arch="mips"
3069     ;;
3070     parisc*|hppa*)
3071         arch="parisc"
3072     ;;
3073     "Power Macintosh"|ppc*|powerpc*)
3074         arch="ppc"
3075     ;;
3076     s390|s390x)
3077         arch="s390"
3078     ;;
3079     sh4|sh)
3080         arch="sh4"
3081     ;;
3082     sun4u|sparc*)
3083         arch="sparc"
3084     ;;
3085     tilegx|tile-gx)
3086         arch="tilegx"
3087     ;;
3088     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3089         arch="x86"
3090     ;;
3091 esac
3092
3093 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3094 enable $arch
3095
3096 # Add processor-specific flags
3097 if enabled aarch64; then
3098
3099     case $cpu in
3100         armv*)
3101             cpuflags="-march=$cpu"
3102         ;;
3103         *)
3104             cpuflags="-mcpu=$cpu"
3105         ;;
3106     esac
3107
3108 elif enabled alpha; then
3109
3110     cpuflags="-mcpu=$cpu"
3111
3112 elif enabled arm; then
3113
3114     check_arm_arch() {
3115         check_cpp_condition stddef.h \
3116             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3117             $cpuflags
3118     }
3119
3120     probe_arm_arch() {
3121         if   check_arm_arch 4;        then echo armv4;
3122         elif check_arm_arch 4T;       then echo armv4t;
3123         elif check_arm_arch 5;        then echo armv5;
3124         elif check_arm_arch 5E;       then echo armv5e;
3125         elif check_arm_arch 5T;       then echo armv5t;
3126         elif check_arm_arch 5TE;      then echo armv5te;
3127         elif check_arm_arch 5TEJ;     then echo armv5te;
3128         elif check_arm_arch 6;        then echo armv6;
3129         elif check_arm_arch 6J;       then echo armv6j;
3130         elif check_arm_arch 6K;       then echo armv6k;
3131         elif check_arm_arch 6Z;       then echo armv6z;
3132         elif check_arm_arch 6ZK;      then echo armv6zk;
3133         elif check_arm_arch 6T2;      then echo armv6t2;
3134         elif check_arm_arch 7;        then echo armv7;
3135         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3136         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3137         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3138         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3139         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3140         fi
3141     }
3142
3143     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3144
3145     case $cpu in
3146         armv*)
3147             cpuflags="-march=$cpu"
3148             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3149         ;;
3150         *)
3151             cpuflags="-mcpu=$cpu"
3152             case $cpu in
3153                 cortex-a*)                               subarch=armv7a  ;;
3154                 cortex-r*)                               subarch=armv7r  ;;
3155                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3156                 arm11*)                                  subarch=armv6   ;;
3157                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3158                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3159                 *)                             subarch=$(probe_arm_arch) ;;
3160             esac
3161         ;;
3162     esac
3163
3164     case "$subarch" in
3165         armv5t*)    enable fast_clz                ;;
3166         armv[6-8]*) enable fast_clz fast_unaligned ;;
3167     esac
3168
3169 elif enabled avr32; then
3170
3171     case $cpu in
3172         ap7[02]0[0-2])
3173             subarch="avr32_ap"
3174             cpuflags="-mpart=$cpu"
3175         ;;
3176         ap)
3177             subarch="avr32_ap"
3178             cpuflags="-march=$cpu"
3179         ;;
3180         uc3[ab]*)
3181             subarch="avr32_uc"
3182             cpuflags="-mcpu=$cpu"
3183         ;;
3184         uc)
3185             subarch="avr32_uc"
3186             cpuflags="-march=$cpu"
3187         ;;
3188     esac
3189
3190 elif enabled bfin; then
3191
3192     cpuflags="-mcpu=$cpu"
3193
3194 elif enabled mips; then
3195
3196     cpuflags="-march=$cpu"
3197
3198 elif enabled ppc; then
3199
3200     disable ldbrx
3201
3202     case $(tolower $cpu) in
3203         601|ppc601|powerpc601)
3204             cpuflags="-mcpu=601"
3205             disable altivec
3206         ;;
3207         603*|ppc603*|powerpc603*)
3208             cpuflags="-mcpu=603"
3209             disable altivec
3210         ;;
3211         604*|ppc604*|powerpc604*)
3212             cpuflags="-mcpu=604"
3213             disable altivec
3214         ;;
3215         g3|75*|ppc75*|powerpc75*)
3216             cpuflags="-mcpu=750"
3217             disable altivec
3218         ;;
3219         g4|745*|ppc745*|powerpc745*)
3220             cpuflags="-mcpu=7450"
3221         ;;
3222         74*|ppc74*|powerpc74*)
3223             cpuflags="-mcpu=7400"
3224         ;;
3225         g5|970|ppc970|powerpc970)
3226             cpuflags="-mcpu=970"
3227         ;;
3228         power[3-7]*)
3229             cpuflags="-mcpu=$cpu"
3230         ;;
3231         cell)
3232             cpuflags="-mcpu=cell"
3233             enable ldbrx
3234         ;;
3235         e500mc)
3236             cpuflags="-mcpu=e500mc"
3237             disable altivec
3238         ;;
3239         e500v2)
3240             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3241             disable altivec
3242             disable dcbzl
3243         ;;
3244         e500)
3245             cpuflags="-mcpu=8540 -mhard-float"
3246             disable altivec
3247             disable dcbzl
3248         ;;
3249     esac
3250
3251 elif enabled sparc; then
3252
3253     case $cpu in
3254         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3255             cpuflags="-mcpu=$cpu"
3256         ;;
3257         ultrasparc*|niagara[234])
3258             cpuflags="-mcpu=$cpu"
3259         ;;
3260     esac
3261
3262 elif enabled x86; then
3263
3264     case $cpu in
3265         i[345]86|pentium)
3266             cpuflags="-march=$cpu"
3267             disable mmx
3268         ;;
3269         # targets that do NOT support nopl and conditional mov (cmov)
3270         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3271             cpuflags="-march=$cpu"
3272             disable i686
3273         ;;
3274         # targets that do support nopl and conditional mov (cmov)
3275         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3276             cpuflags="-march=$cpu"
3277             enable i686
3278             enable fast_cmov
3279         ;;
3280         # targets that do support conditional mov but on which it's slow
3281         pentium4|pentium4m|prescott|nocona)
3282             cpuflags="-march=$cpu"
3283             enable i686
3284             disable fast_cmov
3285         ;;
3286     esac
3287
3288 fi
3289
3290 if [ "$cpu" != generic ]; then
3291     add_cflags  $cpuflags
3292     add_asflags $cpuflags
3293 fi
3294
3295 # compiler sanity check
3296 check_exec <<EOF
3297 int main(void){ return 0; }
3298 EOF
3299 if test "$?" != 0; then
3300     echo "$cc is unable to create an executable file."
3301     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3302         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3303         echo "Only do this if you know what cross compiling means."
3304     fi
3305     die "C compiler test failed."
3306 fi
3307
3308 add_cppflags -D_ISOC99_SOURCE
3309 check_cflags -std=c99
3310 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3311 #include <stdlib.h>
3312 EOF
3313 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3314 #include <stdlib.h>
3315 EOF
3316
3317 add_host_cppflags -D_ISOC99_SOURCE
3318 check_host_cflags -std=c99
3319 check_host_cflags -Wall
3320 check_host_cflags -O3
3321
3322 check_64bit(){
3323     arch32=$1
3324     arch64=$2
3325     expr=$3
3326     check_code cc "" "int test[2*($expr) - 1]" &&
3327         subarch=$arch64 || subarch=$arch32
3328 }
3329
3330 case "$arch" in
3331     aarch64|alpha|ia64)
3332         spic=$shared
3333     ;;
3334     mips)
3335         check_64bit mips mips64 '_MIPS_SIM > 1'
3336         spic=$shared
3337     ;;
3338     parisc)
3339         check_64bit parisc parisc64 'sizeof(void *) > 4'
3340         spic=$shared
3341     ;;
3342     ppc)
3343         check_64bit ppc ppc64 'sizeof(void *) > 4'
3344         spic=$shared
3345     ;;
3346     s390)
3347         check_64bit s390 s390x 'sizeof(void *) > 4'
3348         spic=$shared
3349     ;;
3350     sparc)
3351         check_64bit sparc sparc64 'sizeof(void *) > 4'
3352         spic=$shared
3353     ;;
3354     x86)
3355         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3356         if test "$subarch" = "x86_64"; then
3357             spic=$shared
3358         fi
3359     ;;
3360 esac
3361
3362 enable $subarch
3363 enabled spic && enable_weak pic
3364
3365 # OS specific
3366 case $target_os in
3367     aix)
3368         SHFLAGS=-shared
3369         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3370         enabled shared && add_ldflags -Wl,-brtl
3371         ;;
3372     android)
3373         disable symver
3374         SLIB_INSTALL_NAME='$(SLIBNAME)'
3375         SLIB_INSTALL_LINKS=
3376         # soname not set on purpose
3377         SHFLAGS=-shared
3378         ;;
3379     haiku)
3380         prefix_default="/boot/common"
3381         network_extralibs="-lnetwork"
3382         host_libs=
3383         ;;
3384     sunos)
3385         SHFLAGS='-shared -Wl,-h,$$(@F)'
3386         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3387         network_extralibs="-lsocket -lnsl"
3388         # When using suncc to build, the Solaris linker will mark
3389         # an executable with each instruction set encountered by
3390         # the Solaris assembler.  As our libraries contain their own
3391         # guards for processor-specific code, instead suppress
3392         # generation of the HWCAPS ELF section on Solaris x86 only.
3393         enabled_all suncc x86 &&
3394             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3395             add_ldflags -Wl,-M,mapfile
3396         nm_default='nm -P -g'
3397         ;;
3398     netbsd)
3399         disable symver
3400         oss_indev_extralibs="-lossaudio"
3401         oss_outdev_extralibs="-lossaudio"
3402         ;;
3403     openbsd|bitrig)
3404         disable symver
3405         SHFLAGS='-shared'
3406         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3407         SLIB_INSTALL_LINKS=
3408         oss_indev_extralibs="-lossaudio"
3409         oss_outdev_extralibs="-lossaudio"
3410         ;;
3411     dragonfly)
3412         disable symver
3413         ;;
3414     freebsd)
3415         ;;
3416     bsd/os)
3417         add_extralibs -lpoll -lgnugetopt
3418         ;;
3419     darwin)
3420         gas="gas-preprocessor.pl $cc"
3421         enabled ppc && add_asflags -force_cpusubtype_ALL
3422         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3423         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3424         add_ldflags -Wl,-dynamic,-search_paths_first
3425         SLIBSUF=".dylib"
3426         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3427         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3428         objformat="macho"
3429         enabled x86_64 && objformat="macho64"
3430         enabled_any pic shared ||
3431             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3432         ;;
3433     mingw32*)
3434         if test $target_os = "mingw32ce"; then
3435             disable network
3436         else
3437             target_os=mingw32
3438         fi
3439         LIBTARGET=i386
3440         if enabled x86_64; then
3441             LIBTARGET="i386:x86-64"
3442         elif enabled arm; then
3443             LIBTARGET=arm-wince
3444         fi
3445         check_ldflags -Wl,--nxcompat
3446         check_ldflags -Wl,--dynamicbase
3447         shlibdir_default="$bindir_default"
3448         SLIBPREF=""
3449         SLIBSUF=".dll"
3450         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3451         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3452         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3453         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3454         SLIB_INSTALL_LINKS=
3455         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3456         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3457         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3458         objformat="win32"
3459         dlltool="${cross_prefix}dlltool"
3460         ranlib=:
3461         enable dos_paths
3462         ;;
3463     win32|win64)
3464         disable symver
3465         if enabled shared; then
3466             # Link to the import library instead of the normal static library
3467             # for shared libs.
3468             LD_LIB='%.lib'
3469             # Cannot build both shared and static libs with MSVC or icl.
3470             disable static
3471         fi
3472         shlibdir_default="$bindir_default"
3473         SLIBPREF=""
3474         SLIBSUF=".dll"
3475         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3476         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3477         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3478         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3479         SLIB_INSTALL_LINKS=
3480         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3481         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3482         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3483         objformat="win32"
3484         ranlib=:
3485         enable dos_paths
3486         ;;
3487     cygwin*)
3488         target_os=cygwin
3489         shlibdir_default="$bindir_default"
3490         SLIBPREF="cyg"
3491         SLIBSUF=".dll"
3492         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3493         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3494         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3495         SLIB_INSTALL_LINKS=
3496         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3497         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3498         objformat="win32"
3499         enable dos_paths
3500         ;;
3501     *-dos|freedos|opendos)
3502         network_extralibs="-lsocket"
3503         objformat="coff"
3504         enable dos_paths
3505         add_cppflags -U__STRICT_ANSI__
3506         ;;
3507     linux)
3508         enable dv1394
3509         ;;
3510     irix*)
3511         target_os=irix
3512         ranlib="echo ignoring ranlib"
3513         ;;
3514     os/2*)
3515         ln_s="cp -f"
3516         objformat="aout"
3517         add_cppflags -D_GNU_SOURCE
3518         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3519         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3520         LIBSUF="_s.a"
3521         SLIBPREF=""
3522         SLIBSUF=".dll"
3523         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3524         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3525         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3526             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3527             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3528             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3529             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3530             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3531         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3532             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3533         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3534         enable dos_paths
3535         ;;
3536     gnu/kfreebsd)
3537         add_cppflags -D_BSD_SOURCE
3538         ;;
3539     gnu)
3540         ;;
3541     qnx)
3542         add_cppflags -D_QNX_SOURCE
3543         network_extralibs="-lsocket"
3544         ;;
3545     symbian)
3546         SLIBSUF=".dll"
3547         enable dos_paths
3548         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3549         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3550         add_ldflags -Wl,--target1-abs,--no-undefined \
3551                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3552                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3553         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3554                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3555                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3556         ;;
3557     osf1)
3558         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3559         ;;
3560     minix)
3561         ;;
3562     plan9)
3563         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3564                      -D_REENTRANT_SOURCE        \
3565                      -D_RESEARCH_SOURCE         \
3566                      -DFD_SETSIZE=96            \
3567                      -DHAVE_SOCK_OPTS
3568         add_compat strtod.o strtod=avpriv_strtod
3569         network_extralibs='-lbsd'
3570         exeobjs=compat/plan9/main.o
3571         cp_f='cp'
3572         ;;
3573     none)
3574         ;;
3575     *)
3576         die "Unknown OS '$target_os'."
3577         ;;
3578 esac
3579
3580 # determine libc flavour
3581
3582 probe_libc(){
3583     pfx=$1
3584     pfx_no_=${pfx%_}
3585     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3586     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3587         eval ${pfx}libc_type=uclibc
3588         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3589     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3590         eval ${pfx}libc_type=glibc
3591         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3592     # MinGW headers can be installed on Cygwin, so check for newlib first.
3593     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3594         eval ${pfx}libc_type=newlib
3595         add_${pfx}cppflags -U__STRICT_ANSI__
3596     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3597     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3598         eval ${pfx}libc_type=mingw64
3599         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3600         eval test \$${pfx_no_}cc_type = "gcc" &&
3601             add_${pfx}cppflags -D__printf__=__gnu_printf__
3602     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3603          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3604         eval ${pfx}libc_type=mingw32
3605         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3606             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3607             die "ERROR: MinGW32 runtime version must be >= 3.15."
3608         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3609         eval test \$${pfx_no_}cc_type = "gcc" &&
3610             add_${pfx}cppflags -D__printf__=__gnu_printf__
3611     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3612         eval ${pfx}libc_type=msvcrt
3613         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3614         # 0x601 by default unless something else is set by the user.
3615         # This can easily lead to us detecting functions only present
3616         # in such new versions and producing binaries requiring windows 7.0.
3617         # Therefore explicitly set the default to XP unless the user has
3618         # set something else on the command line.
3619         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3620             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3621     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3622         eval ${pfx}libc_type=klibc
3623     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3624         eval ${pfx}libc_type=bionic
3625     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3626         eval ${pfx}libc_type=solaris
3627         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3628     fi
3629 }
3630
3631 probe_libc
3632 test -n "$libc_type" && enable libc_$libc_type
3633 probe_libc host_
3634 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3635
3636 case $libc_type in
3637     bionic)
3638         add_compat strtod.o strtod=avpriv_strtod
3639         ;;
3640     msvcrt)
3641         add_compat strtod.o strtod=avpriv_strtod
3642         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3643                                      _snprintf=avpriv_snprintf  \
3644                                      vsnprintf=avpriv_vsnprintf
3645         ;;
3646 esac
3647
3648 # hacks for compiler/libc/os combinations
3649
3650 if enabled_all tms470 libc_glibc; then
3651     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3652     add_cppflags -D__USER_LABEL_PREFIX__=
3653     add_cppflags -D__builtin_memset=memset
3654     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3655     add_cflags   -pds=48    # incompatible redefinition of macro
3656 fi
3657
3658 if enabled_all ccc libc_glibc; then
3659     add_ldflags -Wl,-z,now  # calls to libots crash without this
3660 fi
3661
3662 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3663     add_cppflags '-I\$(SRC_PATH)/compat/float'
3664
3665 esc(){
3666     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3667 }
3668
3669 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3670
3671 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3672
3673 set_default $PATHS_LIST
3674 set_default nm
3675
3676 # we need to build at least one lib type
3677 if ! enabled_any static shared; then
3678     cat <<EOF
3679 At least one library type must be built.
3680 Specify --enable-static to build the static libraries or --enable-shared to
3681 build the shared libraries as well. To only build the shared libraries specify
3682 --disable-static in addition to --enable-shared.
3683 EOF
3684     exit 1;
3685 fi
3686
3687 die_license_disabled() {
3688     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3689 }
3690
3691 die_license_disabled gpl libcdio
3692 die_license_disabled gpl libx264
3693 die_license_disabled gpl libx265
3694 die_license_disabled gpl libxavs
3695 die_license_disabled gpl libxvid
3696 die_license_disabled gpl x11grab
3697
3698 die_license_disabled nonfree libfaac
3699 die_license_disabled nonfree libfdk_aac
3700 die_license_disabled nonfree openssl
3701
3702 die_license_disabled version3 libopencore_amrnb
3703 die_license_disabled version3 libopencore_amrwb
3704 die_license_disabled version3 libvo_aacenc
3705 die_license_disabled version3 libvo_amrwbenc
3706
3707 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3708
3709 disabled optimizations || check_cflags -fomit-frame-pointer
3710
3711 enable_weak_pic() {
3712     disabled pic && return
3713     enable pic
3714     add_cppflags -DPIC
3715     case "$target_os" in
3716     mingw*|cygwin*)
3717         ;;
3718     *)
3719         add_cflags -fPIC
3720         ;;
3721     esac
3722     add_asflags  -fPIC
3723 }
3724
3725 enabled pic && enable_weak_pic
3726
3727 check_cc <<EOF || die "Symbol mangling check failed."
3728 int ff_extern;
3729 EOF
3730 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3731 extern_prefix=${sym%%ff_extern*}
3732
3733 check_cc <<EOF && enable_weak inline_asm
3734 void foo(void) { __asm__ volatile ("" ::); }
3735 EOF
3736
3737 _restrict=
3738 for restrict_keyword in restrict __restrict__ __restrict; do
3739     check_cc <<EOF && _restrict=$restrict_keyword && break
3740 void foo(char * $restrict_keyword p);
3741 EOF
3742 done
3743
3744 check_cc <<EOF && enable pragma_deprecated
3745 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3746 EOF
3747
3748 check_cc <<EOF && enable attribute_packed
3749 struct { int x; } __attribute__((packed)) x;
3750 EOF
3751
3752 check_cc <<EOF && enable attribute_may_alias
3753 union { int x; } __attribute__((may_alias)) x;
3754 EOF
3755
3756 check_cc <<EOF || die "endian test failed"
3757 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3758 EOF
3759 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3760
3761
3762 if enabled asm; then
3763     enabled     arm         && nogas=die
3764     enabled_all ppc altivec && nogas=warn
3765     as=${gas:=$as}
3766     check_as <<EOF && enable gnu_as || \
3767         $nogas "GNU assembler not found, install gas-preprocessor"
3768 .macro m n
3769 \n: .int 0
3770 .endm
3771 m x
3772 EOF
3773
3774     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3775 .altmacro
3776 EOF
3777
3778     check_as <<EOF && enable as_func
3779 .func test
3780 .endfunc
3781 EOF
3782 fi
3783
3784 check_inline_asm inline_asm_labels '"1:\n"'
3785
3786 if enabled aarch64; then
3787     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3788     # internal assembler in clang 3.3 does not support this instruction
3789     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3790     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3791
3792     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3793
3794 elif enabled alpha; then
3795
3796     check_cflags -mieee
3797
3798 elif enabled arm; then
3799
3800     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3801     enabled thumb && check_cflags -mthumb || check_cflags -marm
3802
3803     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3804         enable vfp_args
3805     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3806         case "${cross_prefix:-$cc}" in
3807             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3808             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3809 __asm__ (".eabi_attribute 28, 1");
3810 int main(void) { return 0; }
3811 EOF
3812         esac
3813         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3814     fi
3815
3816     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3817     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3818     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3819     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3820     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3821     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3822
3823     [ $target_os = linux ] || [ $target_os = android ] ||
3824         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3825             $ARCH_EXT_LIST_ARM
3826
3827     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3828
3829     check_as <<EOF && enable as_dn_directive
3830 ra .dn d0.i16
3831 .unreq ra
3832 EOF
3833
3834     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3835
3836 elif enabled mips; then
3837
3838     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3839
3840 elif enabled parisc; then
3841
3842     if enabled gcc; then
3843         case $($cc -dumpversion) in
3844             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3845         esac
3846     fi
3847
3848 elif enabled ppc; then
3849
3850     enable local_aligned_8 local_aligned_16
3851
3852     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3853     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3854     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3855     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3856
3857     # AltiVec flags: The FSF version of GCC differs from the Apple version
3858     if enabled altivec; then
3859         check_cflags -maltivec -mabi=altivec &&
3860         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3861         check_cflags -faltivec
3862
3863         # check if our compiler supports Motorola AltiVec C API
3864         check_cc <<EOF || disable altivec
3865 $inc_altivec_h
3866 int main(void) {
3867     vector signed int v1 = (vector signed int) { 0 };
3868     vector signed int v2 = (vector signed int) { 1 };
3869     v1 = vec_add(v1, v2);
3870     return 0;
3871 }
3872 EOF
3873
3874         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3875     fi
3876
3877 elif enabled x86; then
3878
3879     check_builtin rdtsc    intrin.h   "__rdtsc()"
3880     check_builtin mm_empty mmintrin.h "_mm_empty()"
3881
3882     enable local_aligned_8 local_aligned_16
3883
3884     # check whether EBP is available on x86
3885     # As 'i' is stored on the stack, this program will crash
3886     # if the base pointer is used to access it because the
3887     # base pointer is cleared in the inline assembly code.
3888     check_exec_crash <<EOF && enable ebp_available
3889 volatile int i=0;
3890 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3891 return i;
3892 EOF
3893
3894     # check whether EBX is available on x86
3895     check_inline_asm ebx_available '""::"b"(0)' &&
3896         check_inline_asm ebx_available '"":::"%ebx"'
3897
3898     # check whether xmm clobbers are supported
3899     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3900
3901     # check whether binutils is new enough to compile SSSE3/MMXEXT
3902     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3903     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3904
3905     if ! disabled_any asm mmx yasm; then
3906         if check_cmd $yasmexe --version; then
3907             enabled x86_64 && yasm_extra="-m amd64"
3908             yasm_debug="-g dwarf2"
3909         elif check_cmd nasm -v; then
3910             yasmexe=nasm
3911             yasm_debug="-g -F dwarf"
3912             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3913         fi
3914
3915         YASMFLAGS="-f $objformat $yasm_extra"
3916         enabled pic               && append YASMFLAGS "-DPIC"
3917         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3918         case "$objformat" in
3919             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3920         esac
3921
3922         check_yasm "movbe ecx, [5]" && enable yasm ||
3923             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3924         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3925         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3926         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3927         check_yasm "CPU amdnop" || disable cpunop
3928     fi
3929
3930     case "$cpu" in
3931         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3932             disable fast_clz
3933         ;;
3934     esac
3935
3936 fi
3937
3938 check_code cc arm_neon.h "int64x2_t test" && enable intrinsics_neon
3939
3940 check_ldflags -Wl,--as-needed
3941
3942 if check_func dlopen; then
3943     ldl=
3944 elif check_func dlopen -ldl; then
3945     ldl=-ldl
3946 fi
3947
3948 if ! disabled network; then
3949     check_func getaddrinfo $network_extralibs
3950     check_func getservbyport $network_extralibs
3951     check_func inet_aton $network_extralibs
3952
3953     check_type netdb.h "struct addrinfo"
3954     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3955     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3956     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3957     check_type poll.h "struct pollfd"
3958     check_type netinet/sctp.h "struct sctp_event_subscribe"
3959     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3960     check_type netinet/in.h "struct sockaddr_in6"
3961     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3962     check_type "sys/types.h sys/socket.h" socklen_t
3963
3964     # Prefer arpa/inet.h over winsock2
3965     if check_header arpa/inet.h ; then
3966         check_func closesocket
3967     elif check_header winsock2.h ; then
3968         check_func_headers winsock2.h closesocket -lws2 &&
3969             network_extralibs="-lws2" ||
3970         { check_func_headers winsock2.h closesocket -lws2_32 &&
3971             network_extralibs="-lws2_32"; } || disable winsock2_h network
3972         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3973
3974         check_type ws2tcpip.h socklen_t
3975         check_type ws2tcpip.h "struct addrinfo"
3976         check_type ws2tcpip.h "struct group_source_req"
3977         check_type ws2tcpip.h "struct ip_mreq_source"
3978         check_type ws2tcpip.h "struct ipv6_mreq"
3979         check_type winsock2.h "struct pollfd"
3980         check_struct winsock2.h "struct sockaddr" sa_len
3981         check_type ws2tcpip.h "struct sockaddr_in6"
3982         check_type ws2tcpip.h "struct sockaddr_storage"
3983     else
3984         disable network
3985     fi
3986 fi
3987
3988 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3989 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3990 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3991 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3992
3993 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3994 check_func  ${malloc_prefix}memalign            && enable memalign
3995 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3996
3997 check_func  fcntl
3998 check_func  fork
3999 check_func  gethrtime
4000 check_func  getopt
4001 check_func  getrusage
4002 check_func  gettimeofday
4003 check_func  isatty
4004 check_func  localtime_r
4005 check_func  mach_absolute_time
4006 check_func  mkstemp
4007 check_func  mmap
4008 check_func  mprotect
4009 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4010 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4011 check_func  sched_getaffinity
4012 check_func  setrlimit
4013 check_func  strerror_r
4014 check_func  strptime
4015 check_func  sysconf
4016 check_func  sysctl
4017 check_func  usleep
4018
4019 check_func_headers io.h setmode
4020 check_func_headers stdlib.h getenv
4021
4022 check_func_headers windows.h CoTaskMemFree -lole32
4023 check_func_headers windows.h GetProcessAffinityMask
4024 check_func_headers windows.h GetProcessTimes
4025 check_func_headers windows.h GetSystemTimeAsFileTime
4026 check_func_headers windows.h MapViewOfFile
4027 check_func_headers windows.h SetConsoleTextAttribute
4028 check_func_headers windows.h Sleep
4029 check_func_headers windows.h VirtualAlloc
4030
4031 check_header direct.h
4032 check_header dlfcn.h
4033 check_header dxva.h
4034 check_header dxva2api.h
4035 check_header io.h
4036 check_header mach/mach_time.h
4037 check_header malloc.h
4038 check_header poll.h
4039 check_header sys/mman.h
4040 check_header sys/param.h
4041 check_header sys/resource.h
4042 check_header sys/select.h
4043 check_header sys/time.h
4044 check_header sys/un.h
4045 check_header unistd.h
4046 check_header vdpau/vdpau.h
4047 check_header vdpau/vdpau_x11.h
4048 check_header VideoDecodeAcceleration/VDADecoder.h
4049 check_header windows.h
4050 check_header X11/extensions/XvMClib.h
4051
4052 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4053 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4054 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4055
4056 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4057
4058 if ! disabled w32threads && ! enabled pthreads; then
4059     check_func_headers "windows.h process.h" _beginthreadex &&
4060         enable w32threads || disable w32threads
4061 fi
4062
4063 # check for some common methods of building with pthread support
4064 # do this before the optional library checks as some of them require pthreads
4065 if ! disabled pthreads && ! enabled w32threads; then
4066     enable pthreads
4067     if check_func pthread_join -pthread; then
4068         add_cflags -pthread
4069         add_extralibs -pthread
4070     elif check_func pthread_join -pthreads; then
4071         add_cflags -pthreads
4072         add_extralibs -pthreads
4073     elif check_func pthread_join -lpthreadGC2; then
4074         add_extralibs -lpthreadGC2
4075     elif check_lib pthread.h pthread_join -lpthread; then
4076         :
4077     elif ! check_func pthread_join; then
4078         disable pthreads
4079     fi
4080 fi
4081
4082 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4083 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4084
4085 check_lib math.h sin -lm && LIBM="-lm"
4086 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4087
4088 atan2f_args=2
4089 ldexpf_args=2
4090 powf_args=2
4091
4092 for func in $MATH_FUNCS; do
4093     eval check_mathfunc $func \${${func}_args:-1}
4094 done
4095
4096 # these are off by default, so fail if requested and not available
4097 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4098                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4099                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4100 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4101 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4102 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4103 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4104 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4105 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4106 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4107 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4108                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4109                                done || die "ERROR: libgsm not found"; }
4110 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4111 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4112 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4113 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4114 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4115 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4116                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4117 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4118 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4119 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4120 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4121 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4122 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4123 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4124 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4125 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4126 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4127 enabled libvpx            && {
4128     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4129                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4130     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4131                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4132     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4133     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4134 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4135 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4136 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4137                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4138                                die "ERROR: libx264 version must be >= 0.118."; }
4139 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4140                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4141                                die "ERROR: libx265 version must be >= 17."; }
4142 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4143 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4144 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4145                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4146                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4147                                die "ERROR: openssl not found"; }
4148
4149 if enabled gnutls; then
4150     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4151     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4152 fi
4153
4154 # libdc1394 check
4155 if enabled libdc1394; then
4156     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4157         enable libdc1394_2; } ||
4158     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4159         enable libdc1394_1; } ||
4160     die "ERROR: No version of libdc1394 found "
4161 fi
4162
4163 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4164     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4165     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4166     enable sdl
4167 fi
4168
4169 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4170 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4171
4172 check_header linux/fb.h
4173 check_header linux/videodev2.h
4174 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4175
4176 check_header sys/videoio.h
4177
4178 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4179 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4180 # w32api 3.12 had it defined wrong
4181 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4182
4183 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4184 { check_header dev/bktr/ioctl_meteor.h &&
4185   check_header dev/bktr/ioctl_bt848.h; } ||
4186 { check_header machine/ioctl_meteor.h &&
4187   check_header machine/ioctl_bt848.h; } ||
4188 { check_header dev/video/meteor/ioctl_meteor.h &&
4189   check_header dev/video/bktr/ioctl_bt848.h; } ||
4190 check_header dev/ic/bt8xx.h
4191
4192 check_header sndio.h
4193 check_header sys/soundcard.h
4194 check_header soundcard.h
4195
4196 enabled_any alsa_indev alsa_outdev &&
4197     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4198
4199 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4200     check_func jack_port_get_latency_range -ljack
4201
4202 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4203
4204 if enabled libcdio; then
4205     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4206     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4207 fi
4208
4209 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4210
4211 enabled x11grab                                           &&
4212 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4213 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4214 { enabled xlib || die "ERROR: Xlib not found"; }
4215
4216 enabled vdpau &&
4217     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4218     disable vdpau
4219
4220 enabled vdpau && enabled xlib &&
4221     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4222     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4223     enable vdpau_x11
4224
4225 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4226
4227 # add some useful compiler flags if supported
4228 check_cflags -Wdeclaration-after-statement
4229 check_cflags -Wall
4230 check_cflags -Wdisabled-optimization
4231 check_cflags -Wpointer-arith
4232 check_cflags -Wredundant-decls
4233 check_cflags -Wcast-qual
4234 check_cflags -Wwrite-strings
4235 check_cflags -Wtype-limits
4236 check_cflags -Wundef
4237 check_cflags -Wmissing-prototypes
4238 check_cflags -Wstrict-prototypes
4239 enabled extra_warnings && check_cflags -Winline
4240
4241 check_disable_warning(){
4242     warning_flag=-W${1#-Wno-}
4243     test_cflags $warning_flag && add_cflags $1
4244 }
4245
4246 check_disable_warning -Wno-parentheses
4247 check_disable_warning -Wno-switch
4248 check_disable_warning -Wno-format-zero-length
4249 check_disable_warning -Wno-pointer-sign
4250
4251 # add some linker flags
4252 check_ldflags -Wl,--warn-common
4253 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4254 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4255
4256 # add some strip flags
4257 # -wN '..@*' is more selective than -x, but not available everywhere.
4258 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4259
4260 enabled neon_clobber_test &&
4261     check_ldflags -Wl,--wrap,avcodec_open2              \
4262                   -Wl,--wrap,avcodec_decode_audio4      \
4263                   -Wl,--wrap,avcodec_decode_video2      \
4264                   -Wl,--wrap,avcodec_decode_subtitle2   \
4265                   -Wl,--wrap,avcodec_encode_audio2      \
4266                   -Wl,--wrap,avcodec_encode_video2      \
4267                   -Wl,--wrap,avcodec_encode_subtitle    \
4268                   -Wl,--wrap,avresample_convert ||
4269     disable neon_clobber_test
4270
4271 enabled xmm_clobber_test &&
4272     check_ldflags -Wl,--wrap,avcodec_open2              \
4273                   -Wl,--wrap,avcodec_decode_audio4      \
4274                   -Wl,--wrap,avcodec_decode_video2      \
4275                   -Wl,--wrap,avcodec_decode_subtitle2   \
4276                   -Wl,--wrap,avcodec_encode_audio2      \
4277                   -Wl,--wrap,avcodec_encode_video2      \
4278                   -Wl,--wrap,avcodec_encode_subtitle    \
4279                   -Wl,--wrap,avresample_convert         \
4280                   -Wl,--wrap,sws_scale ||
4281     disable xmm_clobber_test
4282
4283 echo "X{};" > $TMPV
4284 if test_ldflags -Wl,--version-script,$TMPV; then
4285     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4286     check_cc <<EOF && enable symver_asm_label
4287 void ff_foo(void) __asm__ ("av_foo@VERSION");
4288 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4289 EOF
4290     check_cc <<EOF && enable symver_gnu_asm
4291 __asm__(".symver ff_foo,av_foo@VERSION");
4292 void ff_foo(void) {}
4293 EOF
4294 fi
4295
4296 if [ -z "$optflags" ]; then
4297     if enabled small; then
4298         optflags=$cflags_size
4299     elif enabled optimizations; then
4300         optflags=$cflags_speed
4301     else
4302         optflags=$cflags_noopt
4303     fi
4304 fi
4305
4306 check_optflags(){
4307     check_cflags "$@"
4308     enabled lto && check_ldflags "$@"
4309 }
4310
4311
4312 if enabled lto; then
4313     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4314     check_cflags  -flto
4315     check_ldflags -flto $cpuflags
4316 fi
4317
4318 check_optflags $optflags
4319 check_optflags -fno-math-errno
4320 check_optflags -fno-signed-zeros
4321
4322 if enabled icc; then
4323     # Just warnings, no remarks
4324     check_cflags -w1
4325     # -wd: Disable following warnings
4326     # 144, 167, 556: -Wno-pointer-sign
4327     # 1292: attribute "foo" ignored
4328     # 1419: external declaration in primary source file
4329     # 10006: ignoring unknown option -fno-signed-zeros
4330     # 10148: ignoring unknown option -Wno-parentheses
4331     # 10156: ignoring option '-W'; no argument required
4332     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4333     # 11030: Warning unknown option --as-needed
4334     # 10156: ignoring option '-export'; no argument required
4335     check_ldflags -wd10156,11030
4336     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4337     enable ebp_available
4338     if enabled x86_32; then
4339         icc_version=$($cc -dumpversion)
4340         test ${icc_version%%.*} -ge 11 &&
4341             check_cflags -falign-stack=maintain-16-byte ||
4342             disable aligned_stack
4343     fi
4344 elif enabled ccc; then
4345     # disable some annoying warnings
4346     add_cflags -msg_disable bitnotint
4347     add_cflags -msg_disable mixfuncvoid
4348     add_cflags -msg_disable nonstandcast
4349     add_cflags -msg_disable unsupieee
4350 elif enabled gcc; then
4351     check_optflags -fno-tree-vectorize
4352     check_cflags -Werror=implicit-function-declaration
4353     check_cflags -Werror=missing-prototypes
4354     check_cflags -Werror=return-type
4355     check_cflags -Werror=declaration-after-statement
4356     check_cflags -Werror=vla
4357     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4358 elif enabled llvm_gcc; then
4359     check_cflags -mllvm -stack-alignment=16
4360 elif enabled clang; then
4361     check_cflags -mllvm -stack-alignment=16
4362     check_cflags -Qunused-arguments
4363     check_cflags -Werror=implicit-function-declaration
4364     check_cflags -Werror=missing-prototypes
4365     check_cflags -Werror=return-type
4366 elif enabled cparser; then
4367     add_cflags -Wno-missing-variable-declarations
4368     add_cflags -Wno-empty-statement
4369 elif enabled armcc; then
4370     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4371     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4372     # 2523: use of inline assembly is deprecated
4373     add_cflags -W${armcc_opt},--diag_suppress=2523
4374     add_cflags -W${armcc_opt},--diag_suppress=1207
4375     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4376     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4377     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4378     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4379 elif enabled tms470; then
4380     add_cflags -pds=824 -pds=837
4381     disable inline_asm
4382 elif enabled pathscale; then
4383     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4384 elif enabled_any msvc icl; then
4385     enabled x86_32 && disable aligned_stack
4386     enabled_all x86_32 debug && add_cflags -Oy-
4387     enabled debug && add_ldflags -debug
4388     enable pragma_deprecated
4389     if enabled icl; then
4390         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4391         # (correctly) on icl 13.x.
4392         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4393             add_cflags -Qansi-alias
4394         # icl will pass the inline asm tests but inline asm is currently
4395         # not supported (build will fail)
4396         disable inline_asm
4397     fi
4398 fi
4399
4400 case $as_type in
4401     clang)
4402         add_asflags -Qunused-arguments
4403     ;;
4404 esac
4405
4406 case $ld_type in
4407     clang)
4408         check_ldflags -Qunused-arguments
4409     ;;
4410 esac
4411
4412 case $target_os in
4413     osf1)
4414         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4415     ;;
4416     plan9)
4417         add_cppflags -Dmain=plan9_main
4418     ;;
4419 esac
4420
4421 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4422
4423 check_deps $CONFIG_LIST       \
4424            $CONFIG_EXTRA      \
4425            $HAVE_LIST         \
4426            $ALL_COMPONENTS    \
4427
4428 enabled_all dxva2 CoTaskMemFree &&
4429     prepend avconv_libs $($ldflags_filter "-lole32") &&
4430     enable dxva2_lib
4431
4432 ! enabled_any memalign posix_memalign aligned_malloc &&
4433     enabled $simd_align_16 && enable memalign_hack
4434
4435 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4436
4437 for thread in $THREADS_LIST; do
4438     if enabled $thread; then
4439         test -n "$thread_type" &&
4440             die "ERROR: Only one thread type must be selected." ||
4441             thread_type="$thread"
4442     fi
4443 done
4444
4445 # conditional library dependencies, in linking order
4446 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4447 enabled resample_filter && prepend avfilter_deps "avresample"
4448 enabled scale_filter    && prepend avfilter_deps "swscale"
4449
4450 enabled opus_decoder    && prepend avcodec_deps "avresample"
4451
4452 expand_deps(){
4453     lib_deps=${1}_deps
4454     eval "deps=\$$lib_deps"
4455     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4456     unique $lib_deps
4457 }
4458
4459 map 'expand_deps $v' $LIBRARY_LIST
4460
4461 echo "install prefix            $prefix"
4462 echo "source path               $source_path"
4463 echo "C compiler                $cc"
4464 echo "C library                 $libc_type"
4465 if test "$host_cc" != "$cc"; then
4466     echo "host C compiler           $host_cc"
4467     echo "host C library            $host_libc_type"
4468 fi
4469 echo "ARCH                      $arch ($cpu)"
4470 if test "$build_suffix" != ""; then
4471     echo "build suffix              $build_suffix"
4472 fi
4473 if test "$extra_version" != ""; then
4474     echo "version string suffix     $extra_version"
4475 fi
4476 echo "big-endian                ${bigendian-no}"
4477 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4478 if enabled x86; then
4479     echo "${yasmexe}                      ${yasm-no}"
4480     echo "MMX enabled               ${mmx-no}"
4481     echo "MMXEXT enabled            ${mmxext-no}"
4482     echo "3DNow! enabled            ${amd3dnow-no}"
4483     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4484     echo "SSE enabled               ${sse-no}"
4485     echo "SSSE3 enabled             ${ssse3-no}"
4486     echo "AVX enabled               ${avx-no}"
4487     echo "XOP enabled               ${xop-no}"
4488     echo "FMA3 enabled              ${fma3-no}"
4489     echo "FMA4 enabled              ${fma4-no}"
4490     echo "i686 features enabled     ${i686-no}"
4491     echo "CMOV is fast              ${fast_cmov-no}"
4492     echo "EBX available             ${ebx_available-no}"
4493     echo "EBP available             ${ebp_available-no}"
4494 fi
4495 if enabled aarch64; then
4496     echo "NEON enabled              ${neon-no}"
4497     echo "VFP enabled               ${vfp-no}"
4498 fi
4499 if enabled arm; then
4500     echo "ARMv5TE enabled           ${armv5te-no}"
4501     echo "ARMv6 enabled             ${armv6-no}"
4502     echo "ARMv6T2 enabled           ${armv6t2-no}"
4503     echo "VFP enabled               ${vfp-no}"
4504     echo "NEON enabled              ${neon-no}"
4505 fi
4506 if enabled ppc; then
4507     echo "AltiVec enabled           ${altivec-no}"
4508     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4509     echo "dcbzl available           ${dcbzl-no}"
4510 fi
4511 echo "debug symbols             ${debug-no}"
4512 echo "optimize for size         ${small-no}"
4513 echo "optimizations             ${optimizations-no}"
4514 echo "static                    ${static-no}"
4515 echo "shared                    ${shared-no}"
4516 echo "new filter support        ${avfilter-no}"
4517 echo "network support           ${network-no}"
4518 echo "threading support         ${thread_type-no}"
4519 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4520 echo "SDL support               ${sdl-no}"
4521 test -n "$random_seed" &&
4522     echo "random seed               ${random_seed}"
4523 echo
4524
4525 echo "External libraries:"
4526 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4527 echo
4528
4529 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4530     echo "Enabled ${type}s:"
4531     eval list=\$$(toupper $type)_LIST
4532     print_enabled '_*' $list | print_3_columns
4533     echo
4534 done
4535
4536 license="LGPL version 2.1 or later"
4537 if enabled nonfree; then
4538     license="nonfree and unredistributable"
4539 elif enabled gplv3; then
4540     license="GPL version 3 or later"
4541 elif enabled lgplv3; then
4542     license="LGPL version 3 or later"
4543 elif enabled gpl; then
4544     license="GPL version 2 or later"
4545 fi
4546
4547 echo "License: $license"
4548
4549 echo "Creating config.mak and config.h..."
4550
4551 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4552
4553 config_files="$TMPH config.mak"
4554
4555 cat > config.mak <<EOF
4556 # Automatically generated by configure - do not modify!
4557 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4558 prefix=$prefix
4559 LIBDIR=\$(DESTDIR)$libdir
4560 SHLIBDIR=\$(DESTDIR)$shlibdir
4561 INCDIR=\$(DESTDIR)$incdir
4562 BINDIR=\$(DESTDIR)$bindir
4563 DATADIR=\$(DESTDIR)$datadir
4564 DOCDIR=\$(DESTDIR)$docdir
4565 MANDIR=\$(DESTDIR)$mandir
4566 SRC_PATH=$source_path
4567 CC_IDENT=$cc_ident
4568 ARCH=$arch
4569 INTRINSICS=$intrinsics
4570 CC=$cc
4571 AS=$as
4572 LD=$ld
4573 DEPCC=$dep_cc
4574 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4575 DEPAS=$as
4576 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4577 YASM=$yasmexe
4578 DEPYASM=$yasmexe
4579 AR=$ar
4580 ARFLAGS=$arflags
4581 AR_O=$ar_o
4582 RANLIB=$ranlib
4583 STRIP=$strip
4584 LN_S=$ln_s
4585 CPPFLAGS=$CPPFLAGS
4586 CFLAGS=$CFLAGS
4587 ASFLAGS=$ASFLAGS
4588 AS_C=$AS_C
4589 AS_O=$AS_O
4590 CC_C=$CC_C
4591 CC_E=$CC_E
4592 CC_O=$CC_O
4593 LD_O=$LD_O
4594 LD_LIB=$LD_LIB
4595 LD_PATH=$LD_PATH
4596 DLLTOOL=$dlltool
4597 LDFLAGS=$LDFLAGS
4598 LDEXEFLAGS=$LDEXEFLAGS
4599 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4600 STRIPFLAGS=$STRIPFLAGS
4601 YASMFLAGS=$YASMFLAGS
4602 BUILDSUF=$build_suffix
4603 FULLNAME=$FULLNAME
4604 LIBPREF=$LIBPREF
4605 LIBSUF=$LIBSUF
4606 LIBNAME=$LIBNAME
4607 SLIBPREF=$SLIBPREF
4608 SLIBSUF=$SLIBSUF
4609 EXESUF=$EXESUF
4610 EXTRA_VERSION=$extra_version
4611 CCDEP=$CCDEP
4612 CCDEP_FLAGS=$CCDEP_FLAGS
4613 ASDEP=$ASDEP
4614 ASDEP_FLAGS=$ASDEP_FLAGS
4615 CC_DEPFLAGS=$CC_DEPFLAGS
4616 AS_DEPFLAGS=$AS_DEPFLAGS
4617 HOSTCC=$host_cc
4618 HOSTLD=$host_ld
4619 HOSTCFLAGS=$host_cflags
4620 HOSTCPPFLAGS=$host_cppflags
4621 HOSTEXESUF=$HOSTEXESUF
4622 HOSTLDFLAGS=$host_ldflags
4623 HOSTLIBS=$host_libs
4624 DEPHOSTCC=$host_cc
4625 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4626 HOSTCCDEP=$HOSTCCDEP
4627 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4628 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4629 HOSTCC_C=$HOSTCC_C
4630 HOSTCC_O=$HOSTCC_O
4631 HOSTLD_O=$HOSTLD_O
4632 TARGET_EXEC=$target_exec $target_exec_args
4633 TARGET_PATH=$target_path
4634 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4635 CFLAGS-avplay=$sdl_cflags
4636 ZLIB=$($ldflags_filter -lz)
4637 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4638 EXTRALIBS=$extralibs
4639 COMPAT_OBJS=$compat_objs
4640 EXEOBJS=$exeobjs
4641 INSTALL=install
4642 LIBTARGET=${LIBTARGET}
4643 SLIBNAME=${SLIBNAME}
4644 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4645 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4646 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4647 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4648 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4649 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4650 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4651 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4652 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4653 EOF
4654
4655 get_version(){
4656     lcname=lib${1}
4657     name=$(toupper $lcname)
4658     file=$source_path/$lcname/version.h
4659     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4660     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4661     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4662     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4663     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4664 }
4665
4666 map 'get_version $v' $LIBRARY_LIST
4667
4668 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4669
4670 print_program_libs(){
4671     eval "program_libs=\$${1}_libs"
4672     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4673 }
4674
4675 map 'print_program_libs $v' $PROGRAM_LIST
4676
4677 cat > $TMPH <<EOF
4678 /* Automatically generated by configure - do not modify! */
4679 #ifndef LIBAV_CONFIG_H
4680 #define LIBAV_CONFIG_H
4681 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4682 #define LIBAV_LICENSE "$(c_escape $license)"
4683 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4684 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4685 #define restrict $_restrict
4686 #define EXTERN_PREFIX "${extern_prefix}"
4687 #define EXTERN_ASM ${extern_prefix}
4688 #define SLIBSUF "$SLIBSUF"
4689 EOF
4690
4691 test -n "$malloc_prefix" &&
4692     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4693
4694 if enabled yasm; then
4695     append config_files $TMPASM
4696     printf '' >$TMPASM
4697 fi
4698
4699 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4700
4701 print_config ARCH_   "$config_files" $ARCH_LIST
4702 print_config HAVE_   "$config_files" $HAVE_LIST
4703 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4704                                      $CONFIG_EXTRA      \
4705                                      $ALL_COMPONENTS    \
4706
4707 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4708
4709 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4710 cp_if_changed $TMPH config.h
4711 touch .config
4712
4713 enabled yasm && cp_if_changed $TMPASM config.asm
4714
4715 cat > $TMPH <<EOF
4716 /* Generated by ffconf */
4717 #ifndef AVUTIL_AVCONFIG_H
4718 #define AVUTIL_AVCONFIG_H
4719 EOF
4720
4721 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4722
4723 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4724
4725 cp_if_changed $TMPH libavutil/avconfig.h
4726
4727 test -n "$WARNINGS" && printf "\n$WARNINGS"
4728
4729 # build pkg-config files
4730
4731 lib_version(){
4732     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4733 }
4734
4735 pkgconfig_generate(){
4736     name=$1
4737     shortname=${name#lib}${build_suffix}
4738     comment=$2
4739     version=$3
4740     libs=$4
4741     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4742     requires=${requires%, }
4743     enabled ${name#lib} || return 0
4744     mkdir -p $name
4745     cat <<EOF > $name/$name.pc
4746 prefix=$prefix
4747 exec_prefix=\${prefix}
4748 libdir=$libdir
4749 includedir=$incdir
4750
4751 Name: $name
4752 Description: $comment
4753 Version: $version
4754 Requires: $(enabled shared || echo $requires)
4755 Requires.private: $(enabled shared && echo $requires)
4756 Conflicts:
4757 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4758 Libs.private: $(enabled shared && echo $libs)
4759 Cflags: -I\${includedir}
4760 EOF
4761     cat <<EOF > $name/$name-uninstalled.pc
4762 prefix=
4763 exec_prefix=
4764 libdir=\${pcfiledir}
4765 includedir=${source_path}
4766
4767 Name: $name
4768 Description: $comment
4769 Version: $version
4770 Requires: $requires
4771 Conflicts:
4772 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4773 Cflags: -I\${includedir}
4774 EOF
4775 }
4776
4777 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4778 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4779 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4780 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4781 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4782 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4783 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"