msvc: Move linker pragma from config.h to libavutil/internal.h
[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   --libdir=DIR             install libs in DIR [PREFIX/lib]
85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
86   --incdir=DIR             install includes in DIR [PREFIX/include]
87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
88
89 Licensing options:
90   --enable-gpl             allow use of GPL code, the resulting libs
91                            and binaries will be under GPL [no]
92   --enable-version3        upgrade (L)GPL to version 3 [no]
93   --enable-nonfree         allow use of nonfree code, the resulting libs
94                            and binaries will be unredistributable [no]
95
96 Configuration options:
97   --disable-static         do not build static libraries [no]
98   --enable-shared          build shared libraries [no]
99   --enable-small           optimize for size instead of speed
100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
101   --enable-gray            enable full grayscale support (slower color)
102   --disable-swscale-alpha  disable alpha channel support in swscale
103   --disable-all            disable building components, libraries and programs
104
105 Program options:
106   --disable-programs       do not build command line programs
107   --disable-avconv         disable avconv build
108   --disable-avplay         disable avplay build
109   --disable-avprobe        disable avprobe build
110   --disable-avserver       disable avserver build
111
112 Component options:
113   --disable-doc            do not build documentation
114   --disable-avdevice       disable libavdevice build
115   --disable-avcodec        disable libavcodec build
116   --disable-avformat       disable libavformat build
117   --disable-avutil         disable libavutil build
118   --disable-swscale        disable libswscale build
119   --disable-avfilter       disable video filter support [no]
120   --disable-avresample     disable libavresample build [no]
121   --disable-pthreads       disable pthreads [auto]
122   --disable-w32threads     disable Win32 threads [auto]
123   --disable-network        disable network support [no]
124   --disable-dct            disable DCT code
125   --disable-error-resilience disable error resilience code
126   --disable-lsp            disable LSP code
127   --disable-lzo            disable LZO decoder code
128   --disable-mdct           disable MDCT code
129   --disable-rdft           disable RDFT code
130   --disable-fft            disable FFT code
131
132 Hardware accelerators:
133   --enable-dxva2           enable DXVA2 code
134   --enable-vaapi           enable VAAPI code
135   --enable-vda             enable VDA code
136   --enable-vdpau           enable VDPAU code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176   --enable-avisynth        enable reading of AVISynth script files [no]
177   --enable-bzlib           enable bzlib [autodetect]
178   --enable-frei0r          enable frei0r video filtering
179   --enable-gnutls          enable gnutls [no]
180   --enable-libcdio         enable audio CD grabbing with libcdio
181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
182                            and libraw1394 [no]
183   --enable-libfaac         enable AAC encoding via libfaac [no]
184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
185   --enable-libfreetype     enable libfreetype [no]
186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
191   --enable-libopencv       enable video filtering via libopencv [no]
192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
193   --enable-libopus         enable Opus decoding via libopus [no]
194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
198   --enable-libtheora       enable Theora encoding via libtheora [no]
199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
203   --enable-libx264         enable H.264 encoding via x264 [no]
204   --enable-libxavs         enable AVS encoding via xavs [no]
205   --enable-libxvid         enable Xvid encoding via xvidcore,
206                            native MPEG-4/Xvid encoder exists [no]
207   --enable-openssl         enable openssl [no]
208   --enable-x11grab         enable X11 grabbing [no]
209   --enable-zlib            enable zlib [autodetect]
210
211 Advanced options (experts only):
212   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
213   --enable-cross-compile   assume a cross-compiler is used
214   --sysroot=PATH           root of cross-build tree
215   --sysinclude=PATH        location of cross-build system headers
216   --target-os=OS           compiler targets OS [$target_os]
217   --target-exec=CMD        command to run executables on target
218   --target-path=DIR        path to view of build directory on target
219   --toolchain=NAME         set tool defaults according to NAME
220   --nm=NM                  use nm tool
221   --ar=AR                  use archive tool AR [$ar_default]
222   --as=AS                  use assembler AS [$as_default]
223   --cc=CC                  use C compiler CC [$cc_default]
224   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
225   --ld=LD                  use linker LD
226   --host-cc=HOSTCC         use host C compiler HOSTCC
227   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
228   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
229   --host-ld=HOSTLD         use host linker HOSTLD
230   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
231   --host-libs=HLIBS        use libs HLIBS when linking for host
232   --host-os=OS             compiler host OS [$target_os]
233   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
234   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
235   --extra-libs=ELIBS       add ELIBS [$ELIBS]
236   --extra-version=STRING   version string suffix []
237   --optflags=OPTFLAGS      override optimization-related compiler flags
238   --build-suffix=SUFFIX    library name suffix []
239   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
240   --arch=ARCH              select architecture [$arch]
241   --cpu=CPU                select the minimum required CPU (affects
242                            instruction selection, may crash on older CPUs)
243   --enable-pic             build position-independent code
244   --enable-sram            allow use of on-chip SRAM
245   --enable-thumb           compile for Thumb instruction set
246   --disable-symver         disable symbol versioning
247   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
248   --disable-safe-bitstream-reader
249                            disable buffer boundary checking in bitreaders
250                            (faster, but may crash)
251   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
252   --enable-lto             use link-time optimization
253
254 Optimization options (experts only):
255   --disable-asm            disable all assembler optimizations
256   --disable-altivec        disable AltiVec optimizations
257   --disable-amd3dnow       disable 3DNow! optimizations
258   --disable-amd3dnowext    disable 3DNow! extended optimizations
259   --disable-mmx            disable MMX optimizations
260   --disable-mmxext         disable MMXEXT optimizations
261   --disable-sse            disable SSE optimizations
262   --disable-sse2           disable SSE2 optimizations
263   --disable-sse3           disable SSE3 optimizations
264   --disable-ssse3          disable SSSE3 optimizations
265   --disable-sse4           disable SSE4 optimizations
266   --disable-sse42          disable SSE4.2 optimizations
267   --disable-avx            disable AVX optimizations
268   --disable-fma4           disable FMA4 optimizations
269   --disable-armv5te        disable armv5te optimizations
270   --disable-armv6          disable armv6 optimizations
271   --disable-armv6t2        disable armv6t2 optimizations
272   --disable-vfp            disable VFP optimizations
273   --disable-neon           disable NEON optimizations
274   --disable-vis            disable VIS optimizations
275   --disable-inline-asm     disable use of inline assembler
276   --disable-yasm           disable use of yasm assembler
277
278 Developer options (useful when working on Libav itself):
279   --disable-debug          disable debugging symbols
280   --enable-debug=LEVEL     set the debug level [$debuglevel]
281   --disable-optimizations  disable compiler optimizations
282   --enable-extra-warnings  enable more compiler warnings
283   --samples=PATH           location of test samples for FATE, if not set use
284                            \$LIBAV_SAMPLES at make invocation time.
285   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
286                            should be used only for debugging purposes)
287   --enable-random          randomly enable/disable components
288   --disable-random
289   --enable-random=LIST     randomly enable/disable specific components or
290   --disable-random=LIST    component groups. LIST is a comma-separated list
291                            of NAME[:PROB] entries where NAME is a component
292                            (group) and PROB the probability associated with
293                            NAME (default 0.5).
294   --random-seed=VALUE      seed value for --enable/disable-random
295
296 NOTE: Object files are built at the place where configure is launched.
297 EOF
298   exit 0
299 }
300
301 quotes='""'
302
303 log(){
304     echo "$@" >> $logfile
305 }
306
307 log_file(){
308     log BEGIN $1
309     pr -n -t $1 >> $logfile
310     log END $1
311 }
312
313 echolog(){
314     log "$@"
315     echo "$@"
316 }
317
318 warn(){
319     log "WARNING: $*"
320     WARNINGS="${WARNINGS}WARNING: $*\n"
321 }
322
323 die(){
324     echolog "$@"
325     cat <<EOF
326
327 If you think configure made a mistake, make sure you are using the latest
328 version from Git.  If the latest version fails, report the problem to the
329 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
330 EOF
331     if disabled logging; then
332         cat <<EOF
333 Rerun configure with logging enabled (do not use --disable-logging), and
334 include the log this produces with your report.
335 EOF
336     else
337         cat <<EOF
338 Include the log file "$logfile" produced by configure as this will help
339 solving the problem.
340 EOF
341     fi
342     exit 1
343 }
344
345 # Avoid locale weirdness, besides we really just want to translate ASCII.
346 toupper(){
347     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
348 }
349
350 tolower(){
351     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
352 }
353
354 c_escape(){
355     echo "$*" | sed 's/["\\]/\\\0/g'
356 }
357
358 sh_quote(){
359     v=$(echo "$1" | sed "s/'/'\\\\''/g")
360     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
361     echo "$v"
362 }
363
364 cleanws(){
365     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
366 }
367
368 filter(){
369     pat=$1
370     shift
371     for v; do
372         eval "case $v in $pat) echo $v ;; esac"
373     done
374 }
375
376 filter_out(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) ;; *) echo $v ;; esac"
381     done
382 }
383
384 map(){
385     m=$1
386     shift
387     for v; do eval $m; done
388 }
389
390 add_suffix(){
391     suffix=$1
392     shift
393     for v; do echo ${v}${suffix}; done
394 }
395
396 set_all(){
397     value=$1
398     shift
399     for var in $*; do
400         eval $var=$value
401     done
402 }
403
404 set_weak(){
405     value=$1
406     shift
407     for var; do
408         eval : \${$var:=$value}
409     done
410 }
411
412 sanitize_var_name(){
413     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
414 }
415
416 set_safe(){
417     var=$1
418     shift
419     eval $(sanitize_var_name "$var")='$*'
420 }
421
422 get_safe(){
423     eval echo \$$(sanitize_var_name "$1")
424 }
425
426 pushvar(){
427     for pvar in $*; do
428         eval level=\${${pvar}_level:=0}
429         eval ${pvar}_${level}="\$$pvar"
430         eval ${pvar}_level=$(($level+1))
431     done
432 }
433
434 popvar(){
435     for pvar in $*; do
436         eval level=\${${pvar}_level:-0}
437         test $level = 0 && continue
438         eval level=$(($level-1))
439         eval $pvar="\${${pvar}_${level}}"
440         eval ${pvar}_level=$level
441         eval unset ${pvar}_${level}
442     done
443 }
444
445 enable(){
446     set_all yes $*
447 }
448
449 disable(){
450     set_all no $*
451 }
452
453 enable_weak(){
454     set_weak yes $*
455 }
456
457 disable_weak(){
458     set_weak no $*
459 }
460
461 enable_safe(){
462     for var; do
463         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
464     done
465 }
466
467 disable_safe(){
468     for var; do
469         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
470     done
471 }
472
473 do_enable_deep(){
474     for var; do
475         enabled $var && continue
476         eval sel="\$${var}_select"
477         eval sgs="\$${var}_suggest"
478         pushvar var sgs
479         enable_deep $sel
480         popvar sgs
481         enable_deep_weak $sgs
482         popvar var
483     done
484 }
485
486 enable_deep(){
487     do_enable_deep $*
488     enable $*
489 }
490
491 enable_deep_weak(){
492     for var; do
493         disabled $var && continue
494         pushvar var
495         do_enable_deep $var
496         popvar var
497         enable_weak $var
498     done
499 }
500
501 enabled(){
502     test "${1#!}" = "$1" && op== || op=!=
503     eval test "x\$${1#!}" $op "xyes"
504 }
505
506 disabled(){
507     test "${1#!}" = "$1" && op== || op=!=
508     eval test "x\$${1#!}" $op "xno"
509 }
510
511 enabled_all(){
512     for opt; do
513         enabled $opt || return 1
514     done
515 }
516
517 disabled_all(){
518     for opt; do
519         disabled $opt || return 1
520     done
521 }
522
523 enabled_any(){
524     for opt; do
525         enabled $opt && return 0
526     done
527 }
528
529 disabled_any(){
530     for opt; do
531         disabled $opt && return 0
532     done
533     return 1
534 }
535
536 set_default(){
537     for opt; do
538         eval : \${$opt:=\$${opt}_default}
539     done
540 }
541
542 is_in(){
543     value=$1
544     shift
545     for var in $*; do
546         [ $var = $value ] && return 0
547     done
548     return 1
549 }
550
551 do_check_deps(){
552     for cfg; do
553         cfg="${cfg#!}"
554         enabled ${cfg}_checking && die "Circular dependency for $cfg."
555         disabled ${cfg}_checking && continue
556         enable ${cfg}_checking
557         append allopts $cfg
558
559         eval dep_all="\$${cfg}_deps"
560         eval dep_any="\$${cfg}_deps_any"
561         eval dep_sel="\$${cfg}_select"
562         eval dep_sgs="\$${cfg}_suggest"
563         eval dep_ifa="\$${cfg}_if"
564         eval dep_ifn="\$${cfg}_if_any"
565
566         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
567         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
568         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
569
570         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
571         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
572         enabled_all  $dep_all || disable $cfg
573         enabled_any  $dep_any || disable $cfg
574         disabled_any $dep_sel && disable $cfg
575
576         if enabled $cfg; then
577             enable_deep $dep_sel
578             enable_deep_weak $dep_sgs
579         fi
580
581         disable ${cfg}_checking
582     done
583 }
584
585 check_deps(){
586     unset allopts
587
588     do_check_deps "$@"
589
590     for cfg in $allopts; do
591         enabled $cfg || continue
592         eval dep_extralibs="\$${cfg}_extralibs"
593         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
594     done
595 }
596
597 print_config(){
598     pfx=$1
599     files=$2
600     shift 2
601     map 'eval echo "$v \${$v:-no}"' "$@" |
602     awk "BEGIN { split(\"$files\", files) }
603         {
604             c = \"$pfx\" toupper(\$1);
605             v = \$2;
606             sub(/yes/, 1, v);
607             sub(/no/,  0, v);
608             for (f in files) {
609                 file = files[f];
610                 if (file ~ /\\.h\$/) {
611                     printf(\"#define %s %d\\n\", c, v) >>file;
612                 } else if (file ~ /\\.asm\$/) {
613                     printf(\"%%define %s %d\\n\", c, v) >>file;
614                 } else if (file ~ /\\.mak\$/) {
615                     n = -v ? \"\" : \"!\";
616                     printf(\"%s%s=yes\\n\", n, c) >>file;
617                 }
618             }
619         }"
620 }
621
622 print_enabled(){
623     suf=$1
624     shift
625     for v; do
626         enabled $v && printf "%s\n" ${v%$suf};
627     done
628 }
629
630 append(){
631     var=$1
632     shift
633     eval "$var=\"\$$var $*\""
634 }
635
636 prepend(){
637     var=$1
638     shift
639     eval "$var=\"$* \$$var\""
640 }
641
642 add_cppflags(){
643     append CPPFLAGS "$@"
644 }
645
646 add_cflags(){
647     append CFLAGS $($cflags_filter "$@")
648 }
649
650 add_asflags(){
651     append ASFLAGS $($asflags_filter "$@")
652 }
653
654 add_ldflags(){
655     append LDFLAGS $($ldflags_filter "$@")
656 }
657
658 add_extralibs(){
659     prepend extralibs $($ldflags_filter "$@")
660 }
661
662 add_host_cppflags(){
663     append host_cppflags "$@"
664 }
665
666 add_host_cflags(){
667     append host_cflags $($host_cflags_filter "$@")
668 }
669
670 add_host_ldflags(){
671     append host_ldflags $($host_ldflags_filter "$@")
672 }
673
674 add_compat(){
675     append compat_objs $1
676     shift
677     map 'add_cppflags -D$v' "$@"
678 }
679
680 check_cmd(){
681     log "$@"
682     "$@" >> $logfile 2>&1
683 }
684
685 cc_o(){
686     eval printf '%s\\n' $CC_O
687 }
688
689 cc_e(){
690     eval printf '%s\\n' $CC_E
691 }
692
693 check_cc(){
694     log check_cc "$@"
695     cat > $TMPC
696     log_file $TMPC
697     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
698 }
699
700 check_cpp(){
701     log check_cpp "$@"
702     cat > $TMPC
703     log_file $TMPC
704     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
705 }
706
707 as_o(){
708     eval printf '%s\\n' $AS_O
709 }
710
711 check_as(){
712     log check_as "$@"
713     cat > $TMPS
714     log_file $TMPS
715     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
716 }
717
718 check_inline_asm(){
719     log check_inline_asm "$@"
720     name="$1"
721     code="$2"
722     shift 2
723     disable $name
724     check_cc "$@" <<EOF && enable $name
725 void foo(void){ __asm__ volatile($code); }
726 EOF
727 }
728
729 check_insn(){
730     log check_insn "$@"
731     check_inline_asm ${1}_inline "\"$2\""
732     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
733 }
734
735 check_yasm(){
736     log check_yasm "$@"
737     echo "$1" > $TMPS
738     log_file $TMPS
739     shift 1
740     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
741 }
742
743 ld_o(){
744     eval printf '%s\\n' $LD_O
745 }
746
747 check_ld(){
748     log check_ld "$@"
749     flags=$(filter_out '-l*' "$@")
750     libs=$(filter '-l*' "$@")
751     check_cc $($cflags_filter $flags) || return
752     flags=$($ldflags_filter $flags)
753     libs=$($ldflags_filter $libs)
754     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
755 }
756
757 check_code(){
758     log check_code "$@"
759     check=$1
760     headers=$2
761     code=$3
762     shift 3
763     {
764         for hdr in $headers; do
765             echo "#include <$hdr>"
766         done
767         echo "int main(void) { $code; return 0; }"
768     } | check_$check "$@"
769 }
770
771 check_cppflags(){
772     log check_cppflags "$@"
773     check_cc "$@" <<EOF && append CPPFLAGS "$@"
774 int x;
775 EOF
776 }
777
778 check_cflags(){
779     log check_cflags "$@"
780     set -- $($cflags_filter "$@")
781     check_cc "$@" <<EOF && append CFLAGS "$@"
782 int x;
783 EOF
784 }
785
786 test_ldflags(){
787     log test_ldflags "$@"
788     check_ld "$@" <<EOF
789 int main(void){ return 0; }
790 EOF
791 }
792
793 check_ldflags(){
794     log check_ldflags "$@"
795     test_ldflags "$@" && add_ldflags "$@"
796 }
797
798 check_header(){
799     log check_header "$@"
800     header=$1
801     shift
802     disable_safe $header
803     check_cpp "$@" <<EOF && enable_safe $header
804 #include <$header>
805 int x;
806 EOF
807 }
808
809 check_func(){
810     log check_func "$@"
811     func=$1
812     shift
813     disable $func
814     check_ld "$@" <<EOF && enable $func
815 extern int $func();
816 int main(void){ $func(); }
817 EOF
818 }
819
820 check_mathfunc(){
821     log check_mathfunc "$@"
822     func=$1
823     narg=$2
824     shift 2
825     test $narg = 2 && args="f, g" || args="f"
826     disable $func
827     check_ld "$@" <<EOF && enable $func
828 #include <math.h>
829 float foo(float f, float g) { return $func($args); }
830 int main(void){ return 0; }
831 EOF
832 }
833
834 check_func_headers(){
835     log check_func_headers "$@"
836     headers=$1
837     funcs=$2
838     shift 2
839     {
840         for hdr in $headers; do
841             echo "#include <$hdr>"
842         done
843         for func in $funcs; do
844             echo "long check_$func(void) { return (long) $func; }"
845         done
846         echo "int main(void) { return 0; }"
847     } | check_ld "$@" && enable $funcs && enable_safe $headers
848 }
849
850 check_cpp_condition(){
851     log check_cpp_condition "$@"
852     header=$1
853     condition=$2
854     shift 2
855     check_cpp "$@" <<EOF
856 #include <$header>
857 #if !($condition)
858 #error "unsatisfied condition: $condition"
859 #endif
860 EOF
861 }
862
863 check_lib(){
864     log check_lib "$@"
865     header="$1"
866     func="$2"
867     shift 2
868     check_header $header && check_func $func "$@" && add_extralibs "$@"
869 }
870
871 check_lib2(){
872     log check_lib2 "$@"
873     headers="$1"
874     funcs="$2"
875     shift 2
876     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
877 }
878
879 check_pkg_config(){
880     log check_pkg_config "$@"
881     pkg="$1"
882     headers="$2"
883     funcs="$3"
884     shift 3
885     $pkg_config --exists $pkg || return
886     pkg_cflags=$($pkg_config --cflags $pkg)
887     pkg_libs=$($pkg_config --libs $pkg)
888     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
889         set_safe ${pkg}_cflags $pkg_cflags   &&
890         set_safe ${pkg}_libs   $pkg_libs
891 }
892
893 check_exec(){
894     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
895 }
896
897 check_exec_crash(){
898     code=$(cat)
899
900     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
901     # are safe but may not be available everywhere.  Thus we use
902     # raise(SIGTERM) instead.  The check is run in a subshell so we
903     # can redirect the "Terminated" message from the shell.  SIGBUS
904     # is not defined by standard C so it is used conditionally.
905
906     (check_exec "$@") >> $logfile 2>&1 <<EOF
907 #include <signal.h>
908 static void sighandler(int sig){
909     raise(SIGTERM);
910 }
911 int foo(void){
912     $code
913 }
914 int main(void){
915     signal(SIGILL, sighandler);
916     signal(SIGFPE, sighandler);
917     signal(SIGSEGV, sighandler);
918 #ifdef SIGBUS
919     signal(SIGBUS, sighandler);
920 #endif
921     foo();
922 }
923 EOF
924 }
925
926 check_type(){
927     log check_type "$@"
928     headers=$1
929     type=$2
930     shift 2
931     disable_safe "$type"
932     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
933 }
934
935 check_struct(){
936     log check_struct "$@"
937     headers=$1
938     struct=$2
939     member=$3
940     shift 3
941     disable_safe "${struct}_${member}"
942     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
943         enable_safe "${struct}_${member}"
944 }
945
946 check_builtin(){
947     log check_builtin "$@"
948     name=$1
949     headers=$2
950     builtin=$3
951     shift 3
952     disable "$name"
953     check_code ld "$headers" "$builtin" "$@" && enable "$name"
954 }
955
956 require(){
957     name="$1"
958     header="$2"
959     func="$3"
960     shift 3
961     check_lib $header $func "$@" || die "ERROR: $name not found"
962 }
963
964 require2(){
965     name="$1"
966     headers="$2"
967     func="$3"
968     shift 3
969     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
970 }
971
972 require_pkg_config(){
973     pkg="$1"
974     check_pkg_config "$@" || die "ERROR: $pkg not found"
975     add_cflags    $(get_safe ${pkg}_cflags)
976     add_extralibs $(get_safe ${pkg}_libs)
977 }
978
979 hostcc_o(){
980     eval printf '%s\\n' $HOSTCC_O
981 }
982
983 check_host_cc(){
984     log check_host_cc "$@"
985     cat > $TMPC
986     log_file $TMPC
987     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
988 }
989
990 check_host_cppflags(){
991     log check_host_cppflags "$@"
992     check_host_cc "$@" <<EOF && append host_cppflags "$@"
993 int x;
994 EOF
995 }
996
997 check_host_cflags(){
998     log check_host_cflags "$@"
999     set -- $($host_cflags_filter "$@")
1000     check_host_cc "$@" <<EOF && append host_cflags "$@"
1001 int x;
1002 EOF
1003 }
1004
1005 apply(){
1006     file=$1
1007     shift
1008     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1009 }
1010
1011 cp_if_changed(){
1012     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1013     mkdir -p "$(dirname $2)"
1014     $cp_f "$1" "$2"
1015 }
1016
1017 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1018 # system-dependent things.
1019
1020 COMPONENT_LIST="
1021     bsfs
1022     decoders
1023     demuxers
1024     encoders
1025     filters
1026     hwaccels
1027     indevs
1028     muxers
1029     outdevs
1030     parsers
1031     protocols
1032 "
1033
1034 EXTERNAL_LIBRARY_LIST="
1035     avisynth
1036     bzlib
1037     frei0r
1038     gnutls
1039     libcdio
1040     libdc1394
1041     libfaac
1042     libfdk_aac
1043     libfreetype
1044     libgsm
1045     libilbc
1046     libmp3lame
1047     libopencore_amrnb
1048     libopencore_amrwb
1049     libopencv
1050     libopenjpeg
1051     libopus
1052     libpulse
1053     librtmp
1054     libschroedinger
1055     libspeex
1056     libtheora
1057     libvo_aacenc
1058     libvo_amrwbenc
1059     libvorbis
1060     libvpx
1061     libx264
1062     libxavs
1063     libxvid
1064     openssl
1065     x11grab
1066     zlib
1067 "
1068
1069 HWACCEL_LIST="
1070     dxva2
1071     vaapi
1072     vda
1073     vdpau
1074 "
1075 LIBRARY_LIST="
1076     avcodec
1077     avdevice
1078     avfilter
1079     avformat
1080     avresample
1081     avutil
1082     swscale
1083 "
1084
1085 PROGRAM_LIST="
1086     avconv
1087     avplay
1088     avprobe
1089     avserver
1090 "
1091
1092 CONFIG_LIST="
1093     $COMPONENT_LIST
1094     $EXTERNAL_LIBRARY_LIST
1095     $HWACCEL_LIST
1096     $LIBRARY_LIST
1097     $PROGRAM_LIST
1098     dct
1099     doc
1100     error_resilience
1101     fft
1102     gpl
1103     gray
1104     hardcoded_tables
1105     lsp
1106     lzo
1107     mdct
1108     memalign_hack
1109     network
1110     nonfree
1111     pic
1112     rdft
1113     runtime_cpudetect
1114     safe_bitstream_reader
1115     shared
1116     small
1117     sram
1118     static
1119     swscale_alpha
1120     thumb
1121     version3
1122     xmm_clobber_test
1123 "
1124
1125 THREADS_LIST='
1126     pthreads
1127     w32threads
1128 '
1129
1130 ATOMICS_LIST='
1131     atomics_gcc
1132     atomics_suncc
1133     atomics_win32
1134 '
1135
1136 ARCH_LIST='
1137     aarch64
1138     alpha
1139     arm
1140     avr32
1141     avr32_ap
1142     avr32_uc
1143     bfin
1144     ia64
1145     m68k
1146     mips
1147     mips64
1148     parisc
1149     ppc
1150     ppc64
1151     s390
1152     sh4
1153     sparc
1154     sparc64
1155     tilegx
1156     tilepro
1157     tomi
1158     x86
1159     x86_32
1160     x86_64
1161 '
1162
1163 ARCH_EXT_LIST_ARM='
1164     armv5te
1165     armv6
1166     armv6t2
1167     neon
1168     vfp
1169     vfpv3
1170 '
1171
1172 ARCH_EXT_LIST_X86='
1173     amd3dnow
1174     amd3dnowext
1175     avx
1176     fma4
1177     mmx
1178     mmxext
1179     sse
1180     sse2
1181     sse3
1182     sse4
1183     sse42
1184     ssse3
1185 '
1186
1187 ARCH_EXT_LIST="
1188     $ARCH_EXT_LIST_ARM
1189     $ARCH_EXT_LIST_X86
1190     altivec
1191     ppc4xx
1192     vis
1193 "
1194
1195 HAVE_LIST_CMDLINE='
1196     inline_asm
1197     symver
1198     yasm
1199 '
1200
1201 HAVE_LIST_PUB='
1202     bigendian
1203     fast_unaligned
1204 '
1205
1206 MATH_FUNCS="
1207     atanf
1208     atan2f
1209     cbrtf
1210     cosf
1211     exp2
1212     exp2f
1213     expf
1214     isinf
1215     isnan
1216     ldexpf
1217     llrint
1218     llrintf
1219     log2
1220     log2f
1221     log10f
1222     lrint
1223     lrintf
1224     powf
1225     rint
1226     round
1227     roundf
1228     sinf
1229     trunc
1230     truncf
1231 "
1232
1233 HAVE_LIST="
1234     $ARCH_EXT_LIST
1235     $(add_suffix _external $ARCH_EXT_LIST)
1236     $(add_suffix _inline   $ARCH_EXT_LIST)
1237     $HAVE_LIST_CMDLINE
1238     $HAVE_LIST_PUB
1239     $THREADS_LIST
1240     $ATOMICS_LIST
1241     $MATH_FUNCS
1242     aligned_malloc
1243     aligned_stack
1244     alsa_asoundlib_h
1245     altivec_h
1246     arpa_inet_h
1247     asm_mod_q
1248     asm_mod_y
1249     atomic_cas_ptr
1250     atomics_native
1251     attribute_may_alias
1252     attribute_packed
1253     cdio_paranoia_h
1254     cdio_paranoia_paranoia_h
1255     closesocket
1256     cmov
1257     CommandLineToArgvW
1258     cpunop
1259     CryptGenRandom
1260     dcbzl
1261     dev_bktr_ioctl_bt848_h
1262     dev_bktr_ioctl_meteor_h
1263     dev_ic_bt8xx_h
1264     dev_video_bktr_ioctl_bt848_h
1265     dev_video_meteor_ioctl_meteor_h
1266     direct_h
1267     dlfcn_h
1268     dlopen
1269     dos_paths
1270     dxva_h
1271     ebp_available
1272     ebx_available
1273     fast_64bit
1274     fast_clz
1275     fast_cmov
1276     fcntl
1277     fork
1278     getaddrinfo
1279     gethrtime
1280     getopt
1281     GetProcessAffinityMask
1282     GetProcessMemoryInfo
1283     GetProcessTimes
1284     GetSystemTimeAsFileTime
1285     getrusage
1286     getservbyport
1287     gettimeofday
1288     gnu_as
1289     gsm_h
1290     ibm_asm
1291     inet_aton
1292     io_h
1293     isatty
1294     jack_port_get_latency_range
1295     ldbrx
1296     libdc1394_1
1297     libdc1394_2
1298     local_aligned_16
1299     local_aligned_8
1300     localtime_r
1301     loongson
1302     machine_ioctl_bt848_h
1303     machine_ioctl_meteor_h
1304     machine_rw_barrier
1305     malloc_h
1306     MapViewOfFile
1307     memalign
1308     MemoryBarrier
1309     mkstemp
1310     mm_empty
1311     mmap
1312     mprotect
1313     msvcrt
1314     nanosleep
1315     poll_h
1316     posix_memalign
1317     rdtsc
1318     sched_getaffinity
1319     sdl
1320     SetConsoleTextAttribute
1321     setmode
1322     setrlimit
1323     Sleep
1324     sndio_h
1325     socklen_t
1326     soundcard_h
1327     strerror_r
1328     strptime
1329     strtok_r
1330     struct_addrinfo
1331     struct_group_source_req
1332     struct_ip_mreq_source
1333     struct_ipv6_mreq
1334     struct_pollfd
1335     struct_rusage_ru_maxrss
1336     struct_sockaddr_in6
1337     struct_sockaddr_sa_len
1338     struct_sockaddr_storage
1339     struct_v4l2_frmivalenum_discrete
1340     symver_asm_label
1341     symver_gnu_asm
1342     sync_val_compare_and_swap
1343     sysconf
1344     sysctl
1345     sys_mman_h
1346     sys_param_h
1347     sys_resource_h
1348     sys_select_h
1349     sys_soundcard_h
1350     sys_time_h
1351     sys_videoio_h
1352     threads
1353     unistd_h
1354     usleep
1355     vfp_args
1356     VirtualAlloc
1357     windows_h
1358     winsock2_h
1359     xform_asm
1360     xmm_clobbers
1361 "
1362
1363 # options emitted with CONFIG_ prefix but not available on the command line
1364 CONFIG_EXTRA="
1365     aandcttables
1366     ac3dsp
1367     audio_frame_queue
1368     dsputil
1369     gcrypt
1370     golomb
1371     gplv3
1372     h264chroma
1373     h264dsp
1374     h264pred
1375     h264qpel
1376     hpeldsp
1377     huffman
1378     lgplv3
1379     lpc
1380     mpegaudio
1381     mpegaudiodsp
1382     mpegvideo
1383     mpegvideoenc
1384     nettle
1385     rangecoder
1386     rtpdec
1387     rtpenc_chain
1388     sinewin
1389     videodsp
1390     vp3dsp
1391 "
1392
1393 CMDLINE_SELECT="
1394     $ARCH_EXT_LIST
1395     $CONFIG_LIST
1396     $HAVE_LIST_CMDLINE
1397     $THREADS_LIST
1398     asm
1399     cross_compile
1400     debug
1401     extra_warnings
1402     logging
1403     lto
1404     optimizations
1405 "
1406
1407 PATHS_LIST='
1408     bindir
1409     datadir
1410     incdir
1411     libdir
1412     mandir
1413     prefix
1414     shlibdir
1415 '
1416
1417 CMDLINE_SET="
1418     $PATHS_LIST
1419     ar
1420     arch
1421     as
1422     build_suffix
1423     cc
1424     cpu
1425     cross_prefix
1426     dep_cc
1427     extra_version
1428     host_cc
1429     host_cflags
1430     host_ld
1431     host_ldflags
1432     host_libs
1433     host_os
1434     ld
1435     logfile
1436     malloc_prefix
1437     nm
1438     optflags
1439     pkg_config
1440     random_seed
1441     samples
1442     sysinclude
1443     sysroot
1444     target_exec
1445     target_os
1446     target_path
1447     toolchain
1448 "
1449
1450 CMDLINE_APPEND="
1451     extra_cflags
1452     host_cppflags
1453 "
1454
1455 # code dependency declarations
1456
1457 # architecture extensions
1458
1459 armv5te_deps="arm"
1460 armv6_deps="arm"
1461 armv6t2_deps="arm"
1462 neon_deps="arm"
1463 vfp_deps="arm"
1464 vfpv3_deps="vfp"
1465
1466 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1467
1468 altivec_deps="ppc"
1469 ppc4xx_deps="ppc"
1470
1471 vis_deps="sparc"
1472
1473 x86_64_suggest="cmov fast_cmov"
1474
1475 amd3dnow_deps="mmx"
1476 amd3dnowext_deps="amd3dnow"
1477 mmx_deps="x86"
1478 mmxext_deps="mmx"
1479 sse_deps="mmxext"
1480 sse2_deps="sse"
1481 sse3_deps="sse2"
1482 ssse3_deps="sse3"
1483 sse4_deps="ssse3"
1484 sse42_deps="sse4"
1485 avx_deps="sse42"
1486 fma4_deps="avx"
1487
1488 mmx_external_deps="yasm"
1489 mmx_inline_deps="inline_asm"
1490 mmx_suggest="mmx_external mmx_inline"
1491
1492 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1493     eval dep=\$${ext}_deps
1494     eval ${ext}_external_deps='"${dep}_external"'
1495     eval ${ext}_inline_deps='"${dep}_inline"'
1496     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1497 done
1498
1499 aligned_stack_if_any="ppc x86"
1500 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1501 fast_clz_if_any="alpha avr32 mips ppc x86"
1502 fast_unaligned_if_any="ppc x86"
1503
1504 inline_asm_deps="!tms470"
1505 need_memalign="altivec neon sse"
1506
1507 symver_if_any="symver_asm_label symver_gnu_asm"
1508
1509 log2_deps="!msvcrt"
1510
1511 # subsystems
1512 dct_select="rdft"
1513 error_resilience_select="dsputil"
1514 lpc_select="dsputil"
1515 mdct_select="fft"
1516 rdft_select="fft"
1517 mpegaudio_select="mpegaudiodsp"
1518 mpegaudiodsp_select="dct"
1519 mpegvideo_select="dsputil hpeldsp videodsp"
1520 mpegvideoenc_select="mpegvideo"
1521
1522 # decoders / encoders
1523 aac_decoder_select="mdct sinewin"
1524 aac_encoder_select="audio_frame_queue mdct sinewin"
1525 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1526 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1527 ac3_encoder_select="mdct ac3dsp dsputil"
1528 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1529 alac_encoder_select="lpc"
1530 als_decoder_select="dsputil"
1531 amrnb_decoder_select="lsp"
1532 amrwb_decoder_select="lsp"
1533 amv_decoder_select="dsputil hpeldsp"
1534 ape_decoder_select="dsputil"
1535 asv1_decoder_select="dsputil"
1536 asv1_encoder_select="dsputil"
1537 asv2_decoder_select="dsputil"
1538 asv2_encoder_select="dsputil"
1539 atrac1_decoder_select="mdct sinewin"
1540 atrac3_decoder_select="mdct"
1541 bink_decoder_select="dsputil hpeldsp"
1542 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1543 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1544 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1545 cllc_decoder_select="dsputil"
1546 comfortnoise_encoder_select="lpc"
1547 cook_decoder_select="dsputil mdct sinewin"
1548 cscd_decoder_select="lzo"
1549 cscd_decoder_suggest="zlib"
1550 dca_decoder_select="mdct"
1551 dnxhd_decoder_select="dsputil"
1552 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1553 dvvideo_decoder_select="dsputil"
1554 dvvideo_encoder_select="dsputil"
1555 dxa_decoder_select="zlib"
1556 eac3_decoder_select="ac3_decoder"
1557 eac3_encoder_select="ac3_encoder"
1558 eamad_decoder_select="aandcttables dsputil mpegvideo"
1559 eatgq_decoder_select="aandcttables dsputil"
1560 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1561 ffv1_decoder_select="dsputil golomb rangecoder"
1562 ffv1_encoder_select="dsputil rangecoder"
1563 ffvhuff_decoder_select="dsputil"
1564 ffvhuff_encoder_select="dsputil huffman"
1565 flac_decoder_select="golomb"
1566 flac_encoder_select="dsputil golomb lpc"
1567 flashsv_decoder_select="zlib"
1568 flashsv_encoder_select="zlib"
1569 flashsv2_decoder_select="zlib"
1570 flv_decoder_select="h263_decoder"
1571 flv_encoder_select="h263_encoder"
1572 fourxm_decoder_select="dsputil"
1573 fraps_decoder_select="dsputil huffman"
1574 h261_decoder_select="error_resilience mpegvideo"
1575 h261_encoder_select="aandcttables mpegvideoenc"
1576 h263_decoder_select="error_resilience h263_parser mpegvideo"
1577 h263_encoder_select="aandcttables mpegvideoenc"
1578 h263i_decoder_select="h263_decoder"
1579 h263p_encoder_select="h263_encoder"
1580 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1581 h264_decoder_suggest="error_resilience"
1582 huffyuv_decoder_select="dsputil"
1583 huffyuv_encoder_select="dsputil huffman"
1584 iac_decoder_select="dsputil fft mdct sinewin"
1585 imc_decoder_select="dsputil fft mdct sinewin"
1586 indeo3_decoder_select="hpeldsp"
1587 interplay_video_decoder_select="hpeldsp"
1588 jpegls_decoder_select="dsputil golomb hpeldsp"
1589 jpegls_encoder_select="golomb"
1590 jv_decoder_select="dsputil"
1591 lagarith_decoder_select="dsputil"
1592 ljpeg_encoder_select="aandcttables mpegvideoenc"
1593 loco_decoder_select="golomb"
1594 mdec_decoder_select="dsputil error_resilience mpegvideo"
1595 mimic_decoder_select="dsputil hpeldsp"
1596 mjpeg_decoder_select="dsputil hpeldsp"
1597 mjpegb_decoder_select="dsputil hpeldsp"
1598 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1599 mlp_decoder_select="dsputil mlp_parser"
1600 motionpixels_decoder_select="dsputil"
1601 mp1_decoder_select="mpegaudio"
1602 mp1float_decoder_select="mpegaudio"
1603 mp2_decoder_select="mpegaudio"
1604 mp2float_decoder_select="mpegaudio"
1605 mp3_decoder_select="mpegaudio"
1606 mp3adu_decoder_select="mpegaudio"
1607 mp3adufloat_decoder_select="mpegaudio"
1608 mp3float_decoder_select="mpegaudio"
1609 mp3on4_decoder_select="mpegaudio"
1610 mp3on4float_decoder_select="mpegaudio"
1611 mpc7_decoder_select="dsputil mpegaudiodsp"
1612 mpc8_decoder_select="dsputil mpegaudiodsp"
1613 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1614 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1615 mpeg1video_decoder_select="error_resilience mpegvideo"
1616 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1617 mpeg2video_decoder_select="error_resilience mpegvideo"
1618 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1619 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1620 mpeg4_encoder_select="h263_encoder"
1621 msmpeg4v1_decoder_select="h263_decoder"
1622 msmpeg4v2_decoder_select="h263_decoder"
1623 msmpeg4v2_encoder_select="h263_encoder"
1624 msmpeg4v3_decoder_select="h263_decoder"
1625 msmpeg4v3_encoder_select="h263_encoder"
1626 mss2_decoder_select="error_resilience vc1_decoder"
1627 mxpeg_decoder_select="dsputil hpeldsp"
1628 nellymoser_decoder_select="mdct sinewin"
1629 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1630 nuv_decoder_select="dsputil lzo"
1631 png_decoder_select="dsputil zlib"
1632 png_encoder_select="dsputil zlib"
1633 prores_decoder_select="dsputil"
1634 prores_encoder_select="dsputil"
1635 qcelp_decoder_select="lsp"
1636 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1637 ra_144_encoder_select="audio_frame_queue lpc"
1638 ralf_decoder_select="golomb"
1639 rv10_decoder_select="error_resilience h263_decoder"
1640 rv10_encoder_select="h263_encoder"
1641 rv20_decoder_select="error_resilience h263_decoder"
1642 rv20_encoder_select="h263_encoder"
1643 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1644 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1645 shorten_decoder_select="golomb"
1646 sipr_decoder_select="lsp"
1647 sp5x_decoder_select="dsputil hpeldsp"
1648 svq1_decoder_select="hpeldsp"
1649 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1650 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1651 svq3_decoder_suggest="error_resilience zlib"
1652 tak_decoder_select="dsputil"
1653 theora_decoder_select="vp3_decoder"
1654 tiff_decoder_suggest="zlib"
1655 tiff_encoder_suggest="zlib"
1656 thp_decoder_select="dsputil hpeldsp"
1657 truehd_decoder_select="mlp_decoder"
1658 truemotion2_decoder_select="dsputil"
1659 truespeech_decoder_select="dsputil"
1660 tscc_decoder_select="zlib"
1661 twinvq_decoder_select="mdct lsp sinewin"
1662 utvideo_decoder_select="dsputil"
1663 utvideo_encoder_select="dsputil huffman"
1664 vble_decoder_select="dsputil"
1665 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1666 vc1image_decoder_select="vc1_decoder"
1667 vorbis_decoder_select="mdct"
1668 vorbis_encoder_select="mdct"
1669 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1670 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1671 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1672 vp6a_decoder_select="vp6_decoder"
1673 vp6f_decoder_select="vp6_decoder"
1674 vp8_decoder_select="h264pred videodsp"
1675 wmapro_decoder_select="mdct sinewin"
1676 wmav1_decoder_select="mdct sinewin"
1677 wmav1_encoder_select="mdct sinewin"
1678 wmav2_decoder_select="mdct sinewin"
1679 wmav2_encoder_select="mdct sinewin"
1680 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1681 wmv1_decoder_select="h263_decoder"
1682 wmv1_encoder_select="h263_encoder"
1683 wmv2_decoder_select="h263_decoder videodsp"
1684 wmv2_encoder_select="h263_encoder"
1685 wmv3_decoder_select="vc1_decoder"
1686 wmv3image_decoder_select="wmv3_decoder"
1687 zerocodec_decoder_select="zlib"
1688 zlib_decoder_select="zlib"
1689 zlib_encoder_select="zlib"
1690 zmbv_decoder_select="zlib"
1691 zmbv_encoder_select="zlib"
1692
1693 # hardware accelerators
1694 dxva2_deps="dxva2api_h"
1695 vaapi_deps="va_va_h"
1696 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1697 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1698 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1699
1700 h263_vaapi_hwaccel_deps="vaapi"
1701 h263_vaapi_hwaccel_select="h263_decoder"
1702 h263_vdpau_hwaccel_deps="vdpau"
1703 h263_vdpau_hwaccel_select="h263_decoder"
1704 h264_dxva2_hwaccel_deps="dxva2"
1705 h264_dxva2_hwaccel_select="h264_decoder"
1706 h264_vaapi_hwaccel_deps="vaapi"
1707 h264_vaapi_hwaccel_select="h264_decoder"
1708 h264_vda_hwaccel_deps="vda"
1709 h264_vda_hwaccel_select="h264_decoder"
1710 h264_vdpau_decoder_deps="vdpau"
1711 h264_vdpau_decoder_select="h264_decoder"
1712 h264_vdpau_hwaccel_deps="vdpau"
1713 h264_vdpau_hwaccel_select="h264_decoder"
1714 mpeg_vdpau_decoder_deps="vdpau"
1715 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1716 mpeg1_vdpau_decoder_deps="vdpau"
1717 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1718 mpeg1_vdpau_hwaccel_deps="vdpau"
1719 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1720 mpeg2_dxva2_hwaccel_deps="dxva2"
1721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1722 mpeg2_vaapi_hwaccel_deps="vaapi"
1723 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1724 mpeg2_vdpau_hwaccel_deps="vdpau"
1725 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1726 mpeg4_vaapi_hwaccel_deps="vaapi"
1727 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1728 mpeg4_vdpau_decoder_deps="vdpau"
1729 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1730 mpeg4_vdpau_hwaccel_deps="vdpau"
1731 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1732 vc1_dxva2_hwaccel_deps="dxva2"
1733 vc1_dxva2_hwaccel_select="vc1_decoder"
1734 vc1_vaapi_hwaccel_deps="vaapi"
1735 vc1_vaapi_hwaccel_select="vc1_decoder"
1736 vc1_vdpau_decoder_deps="vdpau"
1737 vc1_vdpau_decoder_select="vc1_decoder"
1738 vc1_vdpau_hwaccel_deps="vdpau"
1739 vc1_vdpau_hwaccel_select="vc1_decoder"
1740 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1741 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1742 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1743 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1744
1745 # parsers
1746 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1747 mpeg4video_parser_select="error_resilience mpegvideo"
1748 mpegvideo_parser_select="error_resilience mpegvideo"
1749 vc1_parser_select="mpegvideo"
1750
1751 # external libraries
1752 libfaac_encoder_deps="libfaac"
1753 libfaac_encoder_select="audio_frame_queue"
1754 libfdk_aac_encoder_deps="libfdk_aac"
1755 libfdk_aac_encoder_select="audio_frame_queue"
1756 libgsm_decoder_deps="libgsm"
1757 libgsm_encoder_deps="libgsm"
1758 libgsm_ms_decoder_deps="libgsm"
1759 libgsm_ms_encoder_deps="libgsm"
1760 libilbc_decoder_deps="libilbc"
1761 libilbc_encoder_deps="libilbc"
1762 libmp3lame_encoder_deps="libmp3lame"
1763 libmp3lame_encoder_select="audio_frame_queue"
1764 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1765 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1766 libopencore_amrnb_encoder_select="audio_frame_queue"
1767 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1768 libopenjpeg_decoder_deps="libopenjpeg"
1769 libopenjpeg_encoder_deps="libopenjpeg"
1770 libopus_decoder_deps="libopus"
1771 libopus_encoder_deps="libopus"
1772 libopus_encoder_select="audio_frame_queue"
1773 libschroedinger_decoder_deps="libschroedinger"
1774 libschroedinger_encoder_deps="libschroedinger"
1775 libspeex_decoder_deps="libspeex"
1776 libspeex_encoder_deps="libspeex"
1777 libspeex_encoder_select="audio_frame_queue"
1778 libtheora_encoder_deps="libtheora"
1779 libvo_aacenc_encoder_deps="libvo_aacenc"
1780 libvo_aacenc_encoder_select="audio_frame_queue"
1781 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1782 libvorbis_encoder_deps="libvorbis"
1783 libvorbis_encoder_select="audio_frame_queue"
1784 libvpx_vp8_decoder_deps="libvpx"
1785 libvpx_vp8_encoder_deps="libvpx"
1786 libvpx_vp9_decoder_deps="libvpx"
1787 libvpx_vp9_encoder_deps="libvpx"
1788 libx264_encoder_deps="libx264"
1789 libxavs_encoder_deps="libxavs"
1790 libxvid_encoder_deps="libxvid"
1791
1792 # demuxers / muxers
1793 ac3_demuxer_select="ac3_parser"
1794 asf_stream_muxer_select="asf_muxer"
1795 avisynth_demuxer_deps="avisynth"
1796 dirac_demuxer_select="dirac_parser"
1797 eac3_demuxer_select="ac3_parser"
1798 flac_demuxer_select="flac_parser"
1799 ipod_muxer_select="mov_muxer"
1800 ismv_muxer_select="mov_muxer"
1801 matroska_audio_muxer_select="matroska_muxer"
1802 matroska_demuxer_suggest="bzlib lzo zlib"
1803 mov_demuxer_suggest="zlib"
1804 mov_muxer_select="rtpenc_chain"
1805 mp3_demuxer_select="mpegaudio_parser"
1806 mp4_muxer_select="mov_muxer"
1807 mpegts_muxer_select="adts_muxer latm_muxer"
1808 mpegtsraw_demuxer_select="mpegts_demuxer"
1809 mxf_d10_muxer_select="mxf_muxer"
1810 ogg_demuxer_select="golomb"
1811 psp_muxer_select="mov_muxer"
1812 rtp_demuxer_select="sdp_demuxer"
1813 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1814 rtsp_demuxer_select="http_protocol rtpdec"
1815 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1816 sap_demuxer_select="sdp_demuxer"
1817 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1818 sdp_demuxer_select="rtpdec"
1819 smoothstreaming_muxer_select="ismv_muxer"
1820 spdif_muxer_select="aac_parser"
1821 tak_demuxer_select="tak_parser"
1822 tg2_muxer_select="mov_muxer"
1823 tgp_muxer_select="mov_muxer"
1824 w64_demuxer_deps="wav_demuxer"
1825
1826 # indevs / outdevs
1827 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1828 alsa_outdev_deps="alsa_asoundlib_h"
1829 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1830 dv1394_indev_deps="dv1394 dv_demuxer"
1831 fbdev_indev_deps="linux_fb_h"
1832 jack_indev_deps="jack_jack_h"
1833 libcdio_indev_deps="libcdio"
1834 libdc1394_indev_deps="libdc1394"
1835 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1836 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1837 pulse_indev_deps="libpulse"
1838 sndio_indev_deps="sndio_h"
1839 sndio_outdev_deps="sndio_h"
1840 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1841 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1842 vfwcap_indev_extralibs="-lavicap32"
1843 x11grab_indev_deps="x11grab XShmCreateImage"
1844
1845 # protocols
1846 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1847 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1848 ffrtmpcrypt_protocol_select="tcp_protocol"
1849 ffrtmphttp_protocol_deps="!librtmp_protocol"
1850 ffrtmphttp_protocol_select="http_protocol"
1851 gopher_protocol_select="network"
1852 httpproxy_protocol_select="tcp_protocol"
1853 http_protocol_select="tcp_protocol"
1854 https_protocol_select="tls_protocol"
1855 librtmp_protocol_deps="librtmp"
1856 librtmpe_protocol_deps="librtmp"
1857 librtmps_protocol_deps="librtmp"
1858 librtmpt_protocol_deps="librtmp"
1859 librtmpte_protocol_deps="librtmp"
1860 mmsh_protocol_select="http_protocol"
1861 mmst_protocol_select="network"
1862 rtmp_protocol_deps="!librtmp_protocol"
1863 rtmp_protocol_select="tcp_protocol"
1864 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1865 rtmps_protocol_deps="!librtmp_protocol"
1866 rtmps_protocol_select="tls_protocol"
1867 rtmpt_protocol_select="ffrtmphttp_protocol"
1868 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1869 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1870 rtp_protocol_select="udp_protocol"
1871 sctp_protocol_deps="struct_sctp_event_subscribe"
1872 sctp_protocol_select="network"
1873 srtp_protocol_select="rtp_protocol"
1874 tcp_protocol_select="network"
1875 tls_protocol_deps_any="openssl gnutls"
1876 tls_protocol_select="tcp_protocol"
1877 udp_protocol_select="network"
1878
1879 # filters
1880 blackframe_filter_deps="gpl"
1881 boxblur_filter_deps="gpl"
1882 cropdetect_filter_deps="gpl"
1883 delogo_filter_deps="gpl"
1884 drawtext_filter_deps="libfreetype"
1885 frei0r_filter_deps="frei0r dlopen strtok_r"
1886 frei0r_filter_extralibs='$ldl'
1887 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1888 frei0r_src_filter_extralibs='$ldl'
1889 hqdn3d_filter_deps="gpl"
1890 interlace_filter_deps="gpl"
1891 resample_filter_deps="avresample"
1892 ocv_filter_deps="libopencv"
1893 scale_filter_deps="swscale"
1894 yadif_filter_deps="gpl"
1895
1896 # libraries
1897 avcodec_deps="avutil"
1898 avdevice_deps="avutil avcodec avformat"
1899 avfilter_deps="avutil"
1900 avformat_deps="avutil avcodec"
1901 avresample_deps="avutil"
1902 swscale_deps="avutil"
1903
1904 # programs
1905 avconv_deps="avcodec avfilter avformat avresample swscale"
1906 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1907                fps_filter null_filter resample_filter scale_filter
1908                setpts_filter trim_filter"
1909 avplay_deps="avcodec avformat avresample swscale sdl"
1910 avplay_select="rdft"
1911 avprobe_deps="avcodec avformat"
1912 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1913 avserver_extralibs='$ldl'
1914
1915 doc_deps="texi2html"
1916
1917 # default parameters
1918
1919 logfile="config.log"
1920
1921 # installation paths
1922 prefix_default="/usr/local"
1923 bindir_default='${prefix}/bin'
1924 datadir_default='${prefix}/share/avconv'
1925 incdir_default='${prefix}/include'
1926 libdir_default='${prefix}/lib'
1927 mandir_default='${prefix}/share/man'
1928 shlibdir_default="$libdir_default"
1929
1930 # toolchain
1931 ar_default="ar"
1932 cc_default="gcc"
1933 host_cc_default="gcc"
1934 cp_f="cp -f"
1935 ln_s="ln -s -f"
1936 nm_default="nm -g"
1937 objformat="elf"
1938 pkg_config_default=pkg-config
1939 ranlib="ranlib"
1940 yasmexe="yasm"
1941
1942 nogas=":"
1943
1944 # machine
1945 arch_default=$(uname -m)
1946 cpu="generic"
1947
1948 # OS
1949 target_os_default=$(tolower $(uname -s))
1950 host_os=$target_os_default
1951
1952 # configurable options
1953 enable $LIBRARY_LIST $PROGRAM_LIST
1954
1955 enable asm
1956 enable debug
1957 enable doc
1958 enable optimizations
1959 enable safe_bitstream_reader
1960 enable static
1961 enable swscale_alpha
1962
1963 # By default, enable only those hwaccels that have no external dependencies.
1964 enable dxva2 vdpau
1965
1966 # build settings
1967 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1968 AVSERVERLDFLAGS=-Wl,-E
1969 LIBPREF="lib"
1970 LIBSUF=".a"
1971 FULLNAME='$(NAME)$(BUILDSUF)'
1972 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1973 SLIBPREF="lib"
1974 SLIBSUF=".so"
1975 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1976 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1977 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1978 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1979 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1980 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1981
1982 asflags_filter=echo
1983 cflags_filter=echo
1984 ldflags_filter=echo
1985
1986 AS_C='-c'
1987 AS_O='-o $@'
1988 CC_C='-c'
1989 CC_E='-E -o $@'
1990 CC_O='-o $@'
1991 LD_O='-o $@'
1992 LD_LIB='-l%'
1993 LD_PATH='-L'
1994 HOSTCC_C='-c'
1995 HOSTCC_O='-o $@'
1996 HOSTLD_O='-o $@'
1997
1998 host_cflags='-O3 -g'
1999 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2000 host_libs='-lm'
2001 host_cflags_filter=echo
2002 host_ldflags_filter=echo
2003
2004 target_path='$(CURDIR)'
2005
2006 # since the object filename is not given with the -MM flag, the compiler
2007 # is only able to print the basename, and we must add the path ourselves
2008 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2009 DEPFLAGS='-MM'
2010
2011 # find source path
2012 if test -f configure; then
2013     source_path=.
2014 else
2015     source_path=$(cd $(dirname "$0"); pwd)
2016     echo "$source_path" | grep -q '[[:blank:]]' &&
2017         die "Out of tree builds are impossible with whitespace in source path."
2018     test -e "$source_path/config.h" &&
2019         die "Out of tree builds are impossible with config.h in source dir."
2020 fi
2021
2022 for v in "$@"; do
2023     r=${v#*=}
2024     l=${v%"$r"}
2025     r=$(sh_quote "$r")
2026     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2027 done
2028
2029 find_things(){
2030     thing=$1
2031     pattern=$2
2032     file=$source_path/$3
2033     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2034 }
2035
2036 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2037 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2038 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2039 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2040 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2041 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2042 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2043 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2044 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2045 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2046 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2047
2048 ALL_COMPONENTS="
2049     $BSF_LIST
2050     $DECODER_LIST
2051     $DEMUXER_LIST
2052     $ENCODER_LIST
2053     $FILTER_LIST
2054     $HWACCEL_LIST
2055     $INDEV_LIST
2056     $MUXER_LIST
2057     $OUTDEV_LIST
2058     $PARSER_LIST
2059     $PROTOCOL_LIST
2060 "
2061
2062 for n in $COMPONENT_LIST; do
2063     v=$(toupper ${n%s})_LIST
2064     eval enable \$$v
2065     eval ${n}_if_any="\$$v"
2066 done
2067
2068 enable $ARCH_EXT_LIST
2069
2070 die_unknown(){
2071     echo "Unknown option \"$1\"."
2072     echo "See $0 --help for available options."
2073     exit 1
2074 }
2075
2076 print_3_columns() {
2077     cat | tr ' ' '\n' | sort | pr -r -3 -t
2078 }
2079
2080 show_list() {
2081     suffix=_$1
2082     shift
2083     echo $* | sed s/$suffix//g | print_3_columns
2084     exit 0
2085 }
2086
2087 rand_list(){
2088     IFS=', '
2089     set -- $*
2090     unset IFS
2091     for thing; do
2092         comp=${thing%:*}
2093         prob=${thing#$comp}
2094         prob=${prob#:}
2095         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2096         echo "prob ${prob:-0.5}"
2097         printf '%s\n' $comp
2098     done
2099 }
2100
2101 do_random(){
2102     action=$1
2103     shift
2104     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2105     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2106 }
2107
2108 for opt do
2109     optval="${opt#*=}"
2110     case "$opt" in
2111         --extra-ldflags=*)
2112             add_ldflags $optval
2113         ;;
2114         --extra-libs=*)
2115             add_extralibs $optval
2116         ;;
2117         --disable-devices)
2118             disable $INDEV_LIST $OUTDEV_LIST
2119         ;;
2120         --enable-debug=*)
2121             debuglevel="$optval"
2122         ;;
2123         --disable-programs)
2124             disable $PROGRAM_LIST
2125         ;;
2126         --disable-everything)
2127             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2128         ;;
2129         --disable-all)
2130             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2131             disable $LIBRARY_LIST $PROGRAM_LIST doc
2132         ;;
2133         --enable-random|--disable-random)
2134             action=${opt%%-random}
2135             do_random ${action#--} $COMPONENT_LIST
2136         ;;
2137         --enable-random=*|--disable-random=*)
2138             action=${opt%%-random=*}
2139             do_random ${action#--} $optval
2140         ;;
2141         --enable-*=*|--disable-*=*)
2142             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2143             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2144             eval list=\$$(toupper $thing)_LIST
2145             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2146             $action $(filter "$name" $list)
2147         ;;
2148         --enable-?*|--disable-?*)
2149             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2150             if is_in $option $COMPONENT_LIST; then
2151                 test $action = disable && action=unset
2152                 eval $action \$$(toupper ${option%s})_LIST
2153             elif is_in $option $CMDLINE_SELECT; then
2154                 $action $option
2155             else
2156                 die_unknown $opt
2157             fi
2158         ;;
2159         --list-*)
2160             NAME="${opt#--list-}"
2161             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2162             NAME=${NAME%s}
2163             eval show_list $NAME \$$(toupper $NAME)_LIST
2164         ;;
2165         --help|-h) show_help
2166         ;;
2167         *)
2168             optname="${opt%%=*}"
2169             optname="${optname#--}"
2170             optname=$(echo "$optname" | sed 's/-/_/g')
2171             if is_in $optname $CMDLINE_SET; then
2172                 eval $optname='$optval'
2173             elif is_in $optname $CMDLINE_APPEND; then
2174                 append $optname "$optval"
2175             else
2176                 die_unknown $opt
2177             fi
2178         ;;
2179     esac
2180 done
2181
2182 disabled logging && logfile=/dev/null
2183
2184 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2185 set >> $logfile
2186
2187 test -n "$cross_prefix" && enable cross_compile
2188
2189 if enabled cross_compile; then
2190     test -n "$arch" && test -n "$target_os" ||
2191         die "Must specify target arch and OS when cross-compiling"
2192 fi
2193
2194 ar_default="${cross_prefix}${ar_default}"
2195 cc_default="${cross_prefix}${cc_default}"
2196 nm_default="${cross_prefix}${nm_default}"
2197 pkg_config_default="${cross_prefix}${pkg_config_default}"
2198 ranlib="${cross_prefix}${ranlib}"
2199
2200 sysinclude_default="${sysroot}/usr/include"
2201
2202 case "$toolchain" in
2203     clang-asan)
2204         cc_default="clang"
2205         add_cflags  -fsanitize=address
2206         add_ldflags -fsanitize=address
2207     ;;
2208     clang-tsan)
2209         cc_default="clang"
2210         add_cflags  -fsanitize=thread -pie
2211         add_ldflags -fsanitize=thread -pie
2212     ;;
2213     valgrind-memcheck)
2214         target_exec_default="valgrind"
2215         target_exec_args="--track-origins=yes --leak-check=full"
2216     ;;
2217     msvc)
2218         cc_default="c99wrap cl"
2219         ld_default="c99wrap link"
2220         nm_default="dumpbin -symbols"
2221         ar_default="lib"
2222         target_os_default="win32"
2223     ;;
2224     gcov)
2225         add_cflags  -fprofile-arcs -ftest-coverage
2226         add_ldflags -fprofile-arcs -ftest-coverage
2227     ;;
2228     ?*)
2229         die "Unknown toolchain $toolchain"
2230     ;;
2231 esac
2232
2233 set_default arch cc pkg_config sysinclude target_exec target_os
2234 enabled cross_compile || host_cc_default=$cc
2235 set_default host_cc
2236
2237 if ! $pkg_config --version >/dev/null 2>&1; then
2238     warn "$pkg_config not found, library detection may fail."
2239     pkg_config=false
2240 fi
2241
2242 exesuf() {
2243     case $1 in
2244         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2245     esac
2246 }
2247
2248 EXESUF=$(exesuf $target_os)
2249 HOSTEXESUF=$(exesuf $host_os)
2250
2251 # set temporary file name
2252 : ${TMPDIR:=$TEMPDIR}
2253 : ${TMPDIR:=$TMP}
2254 : ${TMPDIR:=/tmp}
2255
2256 if ! check_cmd mktemp -u XXXXXX; then
2257     # simple replacement for missing mktemp
2258     # NOT SAFE FOR GENERAL USE
2259     mktemp(){
2260         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2261     }
2262 fi
2263
2264 tmpfile(){
2265     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2266         (set -C; exec > $tmp) 2>/dev/null ||
2267         die "Unable to create temporary file in $TMPDIR."
2268     append TMPFILES $tmp
2269     eval $1=$tmp
2270 }
2271
2272 trap 'rm -f -- $TMPFILES' EXIT
2273
2274 tmpfile TMPASM .asm
2275 tmpfile TMPC   .c
2276 tmpfile TMPE   $EXESUF
2277 tmpfile TMPH   .h
2278 tmpfile TMPO   .o
2279 tmpfile TMPS   .S
2280 tmpfile TMPSH  .sh
2281 tmpfile TMPV   .ver
2282
2283 unset -f mktemp
2284
2285 chmod +x $TMPE
2286
2287 # make sure we can execute files in $TMPDIR
2288 cat > $TMPSH 2>> $logfile <<EOF
2289 #! /bin/sh
2290 EOF
2291 chmod +x $TMPSH >> $logfile 2>&1
2292 if ! $TMPSH >> $logfile 2>&1; then
2293     cat <<EOF
2294 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2295 variable to another directory and make sure that it is not mounted noexec.
2296 EOF
2297     die "Sanity test failed."
2298 fi
2299
2300 ccc_flags(){
2301     for flag; do
2302         case $flag in
2303             -std=c99)           echo -c99                       ;;
2304             -mcpu=*)            echo -arch ${flag#*=}           ;;
2305             -mieee)             echo -ieee                      ;;
2306             -O*|-fast)          echo $flag                      ;;
2307             -fno-math-errno)    echo -assume nomath_errno       ;;
2308             -g)                 echo -g3                        ;;
2309             -Wall)              echo -msg_enable level2         ;;
2310             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2311             -Wl,*)              echo $flag                      ;;
2312             -f*|-W*)                                            ;;
2313             *)                  echo $flag                      ;;
2314         esac
2315    done
2316 }
2317
2318 msvc_flags(){
2319     for flag; do
2320         case $flag in
2321             -fomit-frame-pointer) echo -Oy ;;
2322             -g)                   echo -Z7 ;;
2323             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2324                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2325                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2326                                        -wd4996 -wd4273 ;;
2327             -std=c99)             ;;
2328             -fno-math-errno)      ;;
2329             -fno-common)          ;;
2330             -fno-signed-zeros)    ;;
2331             -fPIC)                ;;
2332             -lz)                  echo zlib.lib ;;
2333             -lavifil32)           echo vfw32.lib ;;
2334             -lavicap32)           echo vfw32.lib user32.lib ;;
2335             -l*)                  echo ${flag#-l}.lib ;;
2336             *)                    echo $flag ;;
2337         esac
2338     done
2339 }
2340
2341 pgi_flags(){
2342     for flag; do
2343         case $flag in
2344             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2345             -fomit-frame-pointer) echo -Mnoframe ;;
2346             -g)                   echo -gopt ;;
2347             *)                    echo $flag ;;
2348         esac
2349     done
2350 }
2351
2352 suncc_flags(){
2353     for flag; do
2354         case $flag in
2355             -march=*|-mcpu=*)
2356                 case "${flag#*=}" in
2357                     native)                   echo -xtarget=native       ;;
2358                     v9|niagara)               echo -xarch=sparc          ;;
2359                     ultrasparc)               echo -xarch=sparcvis       ;;
2360                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2361                     i586|pentium)             echo -xchip=pentium        ;;
2362                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2363                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2364                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2365                     pentium4*)          echo -xtarget=pentium4           ;;
2366                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2367                     *-sse3)             echo -xarch=sse3                 ;;
2368                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2369                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2370                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2371                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2372                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2373                     k8|opteron|athlon64|athlon-fx)
2374                                               echo -xarch=sse2a          ;;
2375                     athlon*)                  echo -xarch=pentium_proa   ;;
2376                 esac
2377                 ;;
2378             -std=c99)             echo -xc99              ;;
2379             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2380             -fPIC)                echo -KPIC -xcode=pic32 ;;
2381             -W*,*)                echo $flag              ;;
2382             -f*-*|-W*|-mimpure-text)                      ;;
2383             -shared)              echo -G                 ;;
2384             *)                    echo $flag              ;;
2385         esac
2386     done
2387 }
2388
2389 tms470_flags(){
2390     for flag; do
2391         case $flag in
2392             -march=*|-mcpu=*)
2393                 case "${flag#*=}" in
2394                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2395                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2396                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2397                     armv6*|arm11*)          echo -mv=6   ;;
2398                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2399                                             echo -mv=5e  ;;
2400                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2401                 esac
2402                 ;;
2403             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2404             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2405             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2406             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2407             -msoft-float)   echo --float_support=vfplib       ;;
2408             -O[0-3]|-mf=*)  echo $flag                        ;;
2409             -g)             echo -g -mn                       ;;
2410             -pds=*)         echo $flag                        ;;
2411             -D*|-I*)        echo $flag                        ;;
2412             --gcc|--abi=*)  echo $flag                        ;;
2413             -me)            echo $flag                        ;;
2414         esac
2415     done
2416 }
2417
2418 probe_cc(){
2419     pfx=$1
2420     _cc=$2
2421
2422     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2423     unset _ld_o _ldflags _ld_lib _ld_path
2424     unset _depflags _DEPCMD _DEPFLAGS
2425     _flags_filter=echo
2426
2427     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2428         _type=llvm_gcc
2429         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2430         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2431         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2432         _cflags_speed='-O3'
2433         _cflags_size='-Os'
2434     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2435         _type=gcc
2436         gcc_version=$($_cc --version | head -n1)
2437         gcc_basever=$($_cc -dumpversion)
2438         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2439         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2440         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2441         if ! $_cc -dumpversion | grep -q '^2\.'; then
2442             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2443         fi
2444         _cflags_speed='-O3'
2445         _cflags_size='-Os'
2446     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2447         _type=icc
2448         _ident=$($_cc --version | head -n1)
2449         _depflags='-MMD'
2450         _cflags_speed='-O3'
2451         _cflags_size='-Os'
2452         _cflags_noopt='-O1'
2453     elif $_cc -v 2>&1 | grep -q xlc; then
2454         _type=xlc
2455         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2456         _cflags_speed='-O5'
2457         _cflags_size='-O5 -qcompact'
2458     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2459         _type=ccc
2460         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2461         _DEPFLAGS='-M'
2462         _cflags_speed='-fast'
2463         _cflags_size='-O1'
2464         _flags_filter=ccc_flags
2465     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2466         test -d "$sysroot" || die "No valid sysroot specified."
2467         _type=armcc
2468         _ident=$($_cc --vsn | head -n1)
2469         armcc_conf="$PWD/armcc.conf"
2470         $_cc --arm_linux_configure                 \
2471              --arm_linux_config_file="$armcc_conf" \
2472              --configure_sysroot="$sysroot"        \
2473              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2474              die "Error creating armcc configuration file."
2475         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2476         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2477         as_default="${cross_prefix}gcc"
2478         _depflags='-MMD'
2479         _cflags_speed='-O3'
2480         _cflags_size='-Os'
2481     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2482         _type=tms470
2483         _ident=$($_cc -version | head -n1 | tr -s ' ')
2484         _flags='--gcc --abi=eabi -me'
2485         _cc_e='-ppl -fe=$@'
2486         _cc_o='-fe=$@'
2487         _depflags='-ppa -ppd=$(@:.o=.d)'
2488         _cflags_speed='-O3 -mf=5'
2489         _cflags_size='-O3 -mf=2'
2490         _flags_filter=tms470_flags
2491     elif $_cc -v 2>&1 | grep -q clang; then
2492         _type=clang
2493         _ident=$($_cc --version | head -n1)
2494         _depflags='-MMD'
2495         _cflags_speed='-O3'
2496         _cflags_size='-Os'
2497     elif $_cc -V 2>&1 | grep -q Sun; then
2498         _type=suncc
2499         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2500         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2501         _DEPFLAGS='-xM1 -xc99'
2502         _ldflags='-std=c99'
2503         _cflags_speed='-O5'
2504         _cflags_size='-O5 -xspace'
2505         _flags_filter=suncc_flags
2506     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2507         _type=pathscale
2508         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2509         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2510         _cflags_speed='-O2'
2511         _cflags_size='-Os'
2512         _flags_filter='filter_out -Wdisabled-optimization'
2513     elif $_cc -v 2>&1 | grep -q Open64; then
2514         _type=open64
2515         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2516         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2517         _cflags_speed='-O2'
2518         _cflags_size='-Os'
2519         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2520     elif $_cc -V 2>&1 | grep -q Portland; then
2521         _type=pgi
2522         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2523         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2524         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2525         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2526         _cflags_noopt="-O1"
2527         _flags_filter=pgi_flags
2528     elif $_cc 2>&1 | grep -q Microsoft; then
2529         _type=msvc
2530         _ident=$($cc 2>&1 | head -n1)
2531         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2532         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2533         _cflags_speed="-O2"
2534         _cflags_size="-O1"
2535         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2536         if $_cc 2>&1 | grep -q Linker; then
2537             _ld_o='-out $@'
2538         else
2539             _ld_o='-Fe$@'
2540         fi
2541         _cc_o='-Fo $@'
2542         _cc_e='-P -Fi $@'
2543         _flags_filter=msvc_flags
2544         _ld_lib='lib%.a'
2545         _ld_path='-libpath:'
2546         _flags='-nologo'
2547         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2548         if [ $pfx = hostcc ]; then
2549             append _cflags -Dsnprintf=_snprintf
2550         fi
2551     fi
2552
2553     eval ${pfx}_type=\$_type
2554     eval ${pfx}_ident=\$_ident
2555 }
2556
2557 set_ccvars(){
2558     eval ${1}_C=\${_cc_c-\${${1}_C}}
2559     eval ${1}_E=\${_cc_e-\${${1}_E}}
2560     eval ${1}_O=\${_cc_o-\${${1}_O}}
2561
2562     if [ -n "$_depflags" ]; then
2563         eval ${1}_DEPFLAGS=\$_depflags
2564     else
2565         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2566         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2567         eval DEP${1}FLAGS=\$_flags
2568     fi
2569 }
2570
2571 probe_cc cc "$cc"
2572 cflags_filter=$_flags_filter
2573 cflags_speed=$_cflags_speed
2574 cflags_size=$_cflags_size
2575 cflags_noopt=$_cflags_noopt
2576 add_cflags $_flags $_cflags
2577 cc_ldflags=$_ldflags
2578 set_ccvars CC
2579
2580 probe_cc hostcc "$host_cc"
2581 host_cflags_filter=$_flags_filter
2582 add_host_cflags  $_flags $_cflags
2583 set_ccvars HOSTCC
2584
2585 test -n "$cc_type" && enable $cc_type ||
2586     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2587
2588 : ${as_default:=$cc}
2589 : ${dep_cc_default:=$cc}
2590 : ${ld_default:=$cc}
2591 : ${host_ld_default:=$host_cc}
2592 set_default ar as dep_cc ld host_ld
2593
2594 probe_cc as "$as"
2595 asflags_filter=$_flags_filter
2596 add_asflags $_flags $_cflags
2597 set_ccvars AS
2598
2599 probe_cc ld "$ld"
2600 ldflags_filter=$_flags_filter
2601 add_ldflags $_flags $_ldflags
2602 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2603 LD_O=${_ld_o-$LD_O}
2604 LD_LIB=${_ld_lib-$LD_LIB}
2605 LD_PATH=${_ld_path-$LD_PATH}
2606
2607 probe_cc hostld "$host_ld"
2608 host_ldflags_filter=$_flags_filter
2609 add_host_ldflags $_flags $_ldflags
2610 HOSTLD_O=${_ld_o-$HOSTLD_O}
2611
2612 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2613     probe_cc depcc "$dep_cc"
2614     CCDEP=${_DEPCMD:-$DEPCMD}
2615     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2616     DEPCCFLAGS=$_flags
2617 fi
2618
2619 if $ar 2>&1 | grep -q Microsoft; then
2620     arflags="-nologo"
2621     ar_o='-out:$@'
2622 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2623     arflags="rq"
2624     ar_o='$@'
2625 else
2626     arflags="rc"
2627     ar_o='$@'
2628 fi
2629
2630 add_cflags $extra_cflags
2631 add_asflags $extra_cflags
2632
2633 if test -n "$sysroot"; then
2634     case "$cc_type" in
2635         gcc|llvm_gcc|clang)
2636             add_cppflags --sysroot="$sysroot"
2637             add_ldflags --sysroot="$sysroot"
2638         ;;
2639         tms470)
2640             add_cppflags -I"$sysinclude"
2641             add_ldflags  --sysroot="$sysroot"
2642         ;;
2643     esac
2644 fi
2645
2646 if test "$cpu" = host; then
2647     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2648
2649     case "$cc_type" in
2650         gcc|llvm_gcc)
2651             check_native(){
2652                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2653                 sed -n "/cc1.*$1=/{
2654                             s/.*$1=\\([^ ]*\\).*/\\1/
2655                             p
2656                             q
2657                         }" $TMPE
2658             }
2659             cpu=$(check_native -march || check_native -mcpu)
2660         ;;
2661     esac
2662
2663     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2664 fi
2665
2666 # Deal with common $arch aliases
2667 case "$arch" in
2668     aarch64|arm64)
2669         arch="aarch64"
2670     ;;
2671     arm*)
2672         arch="arm"
2673     ;;
2674     mips*|IP*)
2675         arch="mips"
2676     ;;
2677     parisc*|hppa*)
2678         arch="parisc"
2679     ;;
2680     "Power Macintosh"|ppc*|powerpc*)
2681         arch="ppc"
2682     ;;
2683     s390|s390x)
2684         arch="s390"
2685     ;;
2686     sh4|sh)
2687         arch="sh4"
2688     ;;
2689     sun4u|sparc*)
2690         arch="sparc"
2691     ;;
2692     tilegx|tile-gx)
2693         arch="tilegx"
2694     ;;
2695     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2696         arch="x86"
2697     ;;
2698 esac
2699
2700 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2701 enable $arch
2702
2703 # Add processor-specific flags
2704 if enabled aarch64; then
2705
2706     case $cpu in
2707         armv*)
2708             cpuflags="-march=$cpu"
2709         ;;
2710         *)
2711             cpuflags="-mcpu=$cpu"
2712         ;;
2713     esac
2714
2715 elif enabled alpha; then
2716
2717     cpuflags="-mcpu=$cpu"
2718
2719 elif enabled arm; then
2720
2721     check_arm_arch() {
2722         check_cpp_condition stddef.h \
2723             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2724             $cpuflags
2725     }
2726
2727     probe_arm_arch() {
2728         if   check_arm_arch 4;        then echo armv4;
2729         elif check_arm_arch 4T;       then echo armv4t;
2730         elif check_arm_arch 5;        then echo armv5;
2731         elif check_arm_arch 5E;       then echo armv5e;
2732         elif check_arm_arch 5T;       then echo armv5t;
2733         elif check_arm_arch 5TE;      then echo armv5te;
2734         elif check_arm_arch 5TEJ;     then echo armv5te;
2735         elif check_arm_arch 6;        then echo armv6;
2736         elif check_arm_arch 6J;       then echo armv6j;
2737         elif check_arm_arch 6K;       then echo armv6k;
2738         elif check_arm_arch 6Z;       then echo armv6z;
2739         elif check_arm_arch 6ZK;      then echo armv6zk;
2740         elif check_arm_arch 6T2;      then echo armv6t2;
2741         elif check_arm_arch 7;        then echo armv7;
2742         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2743         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2744         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2745         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2746         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2747         fi
2748     }
2749
2750     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2751
2752     case $cpu in
2753         armv*)
2754             cpuflags="-march=$cpu"
2755             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2756         ;;
2757         *)
2758             cpuflags="-mcpu=$cpu"
2759             case $cpu in
2760                 cortex-a*)                               subarch=armv7a  ;;
2761                 cortex-r*)                               subarch=armv7r  ;;
2762                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2763                 arm11*)                                  subarch=armv6   ;;
2764                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2765                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2766                 *)                             subarch=$(probe_arm_arch) ;;
2767             esac
2768         ;;
2769     esac
2770
2771     case "$subarch" in
2772         armv5t*)    enable fast_clz                ;;
2773         armv[6-8]*) enable fast_clz fast_unaligned ;;
2774     esac
2775
2776 elif enabled avr32; then
2777
2778     case $cpu in
2779         ap7[02]0[0-2])
2780             subarch="avr32_ap"
2781             cpuflags="-mpart=$cpu"
2782         ;;
2783         ap)
2784             subarch="avr32_ap"
2785             cpuflags="-march=$cpu"
2786         ;;
2787         uc3[ab]*)
2788             subarch="avr32_uc"
2789             cpuflags="-mcpu=$cpu"
2790         ;;
2791         uc)
2792             subarch="avr32_uc"
2793             cpuflags="-march=$cpu"
2794         ;;
2795     esac
2796
2797 elif enabled bfin; then
2798
2799     cpuflags="-mcpu=$cpu"
2800
2801 elif enabled mips; then
2802
2803     cpuflags="-march=$cpu"
2804
2805 elif enabled ppc; then
2806
2807     case $(tolower $cpu) in
2808         601|ppc601|powerpc601)
2809             cpuflags="-mcpu=601"
2810             disable altivec
2811         ;;
2812         603*|ppc603*|powerpc603*)
2813             cpuflags="-mcpu=603"
2814             disable altivec
2815         ;;
2816         604*|ppc604*|powerpc604*)
2817             cpuflags="-mcpu=604"
2818             disable altivec
2819         ;;
2820         g3|75*|ppc75*|powerpc75*)
2821             cpuflags="-mcpu=750"
2822             disable altivec
2823         ;;
2824         g4|745*|ppc745*|powerpc745*)
2825             cpuflags="-mcpu=7450"
2826         ;;
2827         74*|ppc74*|powerpc74*)
2828             cpuflags="-mcpu=7400"
2829         ;;
2830         g5|970|ppc970|powerpc970)
2831             cpuflags="-mcpu=970"
2832         ;;
2833         power[3-7]*)
2834             cpuflags="-mcpu=$cpu"
2835         ;;
2836         cell)
2837             cpuflags="-mcpu=cell"
2838             enable ldbrx
2839         ;;
2840         e500mc)
2841             cpuflags="-mcpu=e500mc"
2842             disable altivec
2843         ;;
2844         e500v2)
2845             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2846             disable altivec
2847         ;;
2848         e500)
2849             cpuflags="-mcpu=8540 -mhard-float"
2850             disable altivec
2851         ;;
2852     esac
2853
2854 elif enabled sparc; then
2855
2856     case $cpu in
2857         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2858             cpuflags="-mcpu=$cpu"
2859             disable vis
2860         ;;
2861         ultrasparc*|niagara[234])
2862             cpuflags="-mcpu=$cpu"
2863         ;;
2864     esac
2865
2866 elif enabled x86; then
2867
2868     case $cpu in
2869         i[345]86|pentium)
2870             cpuflags="-march=$cpu"
2871             disable mmx
2872         ;;
2873         # targets that do NOT support conditional mov (cmov)
2874         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2875             cpuflags="-march=$cpu"
2876             disable cmov
2877         ;;
2878         # targets that do support conditional mov (cmov)
2879         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2880             cpuflags="-march=$cpu"
2881             enable cmov
2882             enable fast_cmov
2883         ;;
2884         # targets that do support conditional mov but on which it's slow
2885         pentium4|pentium4m|prescott|nocona)
2886             cpuflags="-march=$cpu"
2887             enable cmov
2888             disable fast_cmov
2889         ;;
2890     esac
2891
2892 fi
2893
2894 if [ "$cpu" != generic ]; then
2895     add_cflags  $cpuflags
2896     add_asflags $cpuflags
2897 fi
2898
2899 # compiler sanity check
2900 check_exec <<EOF
2901 int main(void){ return 0; }
2902 EOF
2903 if test "$?" != 0; then
2904     echo "$cc is unable to create an executable file."
2905     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2906         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2907         echo "Only do this if you know what cross compiling means."
2908     fi
2909     die "C compiler test failed."
2910 fi
2911
2912 add_cppflags -D_ISOC99_SOURCE
2913 check_cflags -std=c99
2914 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2915 #include <stdlib.h>
2916 EOF
2917 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2918 #include <stdlib.h>
2919 EOF
2920
2921 check_host_cflags -std=c99
2922 check_host_cflags -Wall
2923
2924 check_64bit(){
2925     arch32=$1
2926     arch64=$2
2927     expr=$3
2928     check_code cc "" "int test[2*($expr) - 1]" &&
2929         subarch=$arch64 || subarch=$arch32
2930 }
2931
2932 case "$arch" in
2933     aarch64|alpha|ia64)
2934         spic=$shared
2935     ;;
2936     mips)
2937         check_64bit mips mips64 '_MIPS_SIM > 1'
2938         spic=$shared
2939     ;;
2940     parisc)
2941         check_64bit parisc parisc64 'sizeof(void *) > 4'
2942         spic=$shared
2943     ;;
2944     ppc)
2945         check_64bit ppc ppc64 'sizeof(void *) > 4'
2946         spic=$shared
2947     ;;
2948     sparc)
2949         check_64bit sparc sparc64 'sizeof(void *) > 4'
2950         spic=$shared
2951     ;;
2952     x86)
2953         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2954         if test "$subarch" = "x86_64"; then
2955             spic=$shared
2956         fi
2957     ;;
2958 esac
2959
2960 enable $subarch
2961 enabled spic && enable pic
2962
2963 # OS specific
2964 case $target_os in
2965     haiku)
2966         prefix_default="/boot/common"
2967         network_extralibs="-lnetwork"
2968         host_libs=
2969         ;;
2970     sunos)
2971         AVSERVERLDFLAGS=""
2972         SHFLAGS='-shared -Wl,-h,$$(@F)'
2973         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2974         network_extralibs="-lsocket -lnsl"
2975         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2976         # When using suncc to build, the Solaris linker will mark
2977         # an executable with each instruction set encountered by
2978         # the Solaris assembler.  As our libraries contain their own
2979         # guards for processor-specific code, instead suppress
2980         # generation of the HWCAPS ELF section on Solaris x86 only.
2981         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2982         nm_default='nm -P -g'
2983         ;;
2984     netbsd)
2985         disable symver
2986         oss_indev_extralibs="-lossaudio"
2987         oss_outdev_extralibs="-lossaudio"
2988         ;;
2989     openbsd|bitrig)
2990         disable symver
2991         SHFLAGS='-shared'
2992         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2993         SLIB_INSTALL_LINKS=
2994         oss_indev_extralibs="-lossaudio"
2995         oss_outdev_extralibs="-lossaudio"
2996         ;;
2997     dragonfly)
2998         disable symver
2999         ;;
3000     freebsd)
3001         ;;
3002     bsd/os)
3003         add_extralibs -lpoll -lgnugetopt
3004         ;;
3005     darwin)
3006         gas="gas-preprocessor.pl $cc"
3007         enabled ppc && add_asflags -force_cpusubtype_ALL
3008         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3009         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3010         add_ldflags -Wl,-dynamic,-search_paths_first
3011         SLIBSUF=".dylib"
3012         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3013         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3014         AVSERVERLDFLAGS=-Wl,-bind_at_load
3015         objformat="macho"
3016         enabled x86_64 && objformat="macho64"
3017         enabled_any pic shared ||
3018             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3019         ;;
3020     mingw32*)
3021         if test $target_os = "mingw32ce"; then
3022             disable network
3023         else
3024             target_os=mingw32
3025         fi
3026         LIBTARGET=i386
3027         if enabled x86_64; then
3028             LIBTARGET="i386:x86-64"
3029         elif enabled arm; then
3030             LIBTARGET=arm-wince
3031         fi
3032         shlibdir_default="$bindir_default"
3033         SLIBPREF=""
3034         SLIBSUF=".dll"
3035         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3036         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3037         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3038         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3039         SLIB_INSTALL_LINKS=
3040         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3041         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3042         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3043         objformat="win32"
3044         dlltool="${cross_prefix}dlltool"
3045         ranlib=:
3046         enable dos_paths
3047         ;;
3048     win32|win64)
3049         if enabled shared; then
3050             # Link to the import library instead of the normal static library
3051             # for shared libs.
3052             LD_LIB='%.lib'
3053             # Cannot build shared and static libraries at the same time with
3054             # MSVC.
3055             disable static
3056         fi
3057         shlibdir_default="$bindir_default"
3058         SLIBPREF=""
3059         SLIBSUF=".dll"
3060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3062         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3063         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3064         SLIB_INSTALL_LINKS=
3065         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3066         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3067         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3068         objformat="win32"
3069         ranlib=:
3070         enable dos_paths
3071         ;;
3072     cygwin*)
3073         target_os=cygwin
3074         shlibdir_default="$bindir_default"
3075         SLIBPREF="cyg"
3076         SLIBSUF=".dll"
3077         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3078         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3079         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3080         SLIB_INSTALL_LINKS=
3081         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3082         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3083         objformat="win32"
3084         enable dos_paths
3085         ;;
3086     *-dos|freedos|opendos)
3087         network_extralibs="-lsocket"
3088         objformat="coff"
3089         enable dos_paths
3090         add_cppflags -U__STRICT_ANSI__
3091         ;;
3092     linux)
3093         enable dv1394
3094         ;;
3095     irix*)
3096         target_os=irix
3097         ranlib="echo ignoring ranlib"
3098         ;;
3099     os/2*)
3100         ln_s="cp -f"
3101         objformat="aout"
3102         add_cppflags -D_GNU_SOURCE
3103         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3104         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3105         AVSERVERLDFLAGS=""
3106         LIBSUF="_s.a"
3107         SLIBPREF=""
3108         SLIBSUF=".dll"
3109         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3110         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3111         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3112             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3113             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3114             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3115             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3116             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3117         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3118             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3119         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3120         enable dos_paths
3121         ;;
3122     gnu/kfreebsd)
3123         add_cppflags -D_BSD_SOURCE
3124         ;;
3125     gnu)
3126         ;;
3127     qnx)
3128         add_cppflags -D_QNX_SOURCE
3129         network_extralibs="-lsocket"
3130         ;;
3131     symbian)
3132         SLIBSUF=".dll"
3133         enable dos_paths
3134         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3135         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3136         add_ldflags -Wl,--target1-abs,--no-undefined \
3137                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3138                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3139         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3140                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3141                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3142         ;;
3143     osf1)
3144         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3145         AVSERVERLDFLAGS=
3146         ;;
3147     minix)
3148         ;;
3149     plan9)
3150         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3151                      -D_REENTRANT_SOURCE        \
3152                      -D_RESEARCH_SOURCE         \
3153                      -DFD_SETSIZE=96            \
3154                      -DHAVE_SOCK_OPTS
3155         add_compat strtod.o strtod=avpriv_strtod
3156         network_extralibs='-lbsd'
3157         exeobjs=compat/plan9/main.o
3158         disable avserver
3159         cp_f='cp'
3160         ;;
3161     none)
3162         ;;
3163     *)
3164         die "Unknown OS '$target_os'."
3165         ;;
3166 esac
3167
3168 # determine libc flavour
3169
3170 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3171 if check_cpp_condition features.h "defined __UCLIBC__"; then
3172     libc_type=uclibc
3173     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3174 elif check_cpp_condition features.h "defined __GLIBC__"; then
3175     libc_type=glibc
3176     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3177 # MinGW headers can be installed on Cygwin, so check for newlib first.
3178 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3179     libc_type=newlib
3180     add_cppflags -U__STRICT_ANSI__
3181 elif check_header _mingw.h; then
3182     libc_type=mingw
3183     check_cpp_condition _mingw.h \
3184         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3185             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3186         die "ERROR: MinGW runtime version must be >= 3.15."
3187     add_cppflags -U__STRICT_ANSI__
3188 elif check_func_headers stdlib.h _get_doserrno; then
3189     libc_type=msvcrt
3190     add_compat strtod.o strtod=avpriv_strtod
3191     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3192                                  _snprintf=avpriv_snprintf  \
3193                                  vsnprintf=avpriv_vsnprintf
3194 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3195     libc_type=klibc
3196 fi
3197
3198 test -n "$libc_type" && enable $libc_type
3199
3200 # hacks for compiler/libc/os combinations
3201
3202 if enabled_all tms470 glibc; then
3203     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3204     add_cppflags -D__USER_LABEL_PREFIX__=
3205     add_cppflags -D__builtin_memset=memset
3206     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3207     add_cflags   -pds=48    # incompatible redefinition of macro
3208 fi
3209
3210 if enabled_all ccc glibc; then
3211     add_ldflags -Wl,-z,now  # calls to libots crash without this
3212 fi
3213
3214 esc(){
3215     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3216 }
3217
3218 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3219
3220 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3221
3222 set_default $PATHS_LIST
3223 set_default nm
3224
3225 # we need to build at least one lib type
3226 if ! enabled_any static shared; then
3227     cat <<EOF
3228 At least one library type must be built.
3229 Specify --enable-static to build the static libraries or --enable-shared to
3230 build the shared libraries as well. To only build the shared libraries specify
3231 --disable-static in addition to --enable-shared.
3232 EOF
3233     exit 1;
3234 fi
3235
3236 die_license_disabled() {
3237     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3238 }
3239
3240 die_license_disabled gpl libcdio
3241 die_license_disabled gpl libx264
3242 die_license_disabled gpl libxavs
3243 die_license_disabled gpl libxvid
3244 die_license_disabled gpl x11grab
3245
3246 die_license_disabled nonfree libfaac
3247 die_license_disabled nonfree libfdk_aac
3248 die_license_disabled nonfree openssl
3249
3250 die_license_disabled version3 libopencore_amrnb
3251 die_license_disabled version3 libopencore_amrwb
3252 die_license_disabled version3 libvo_aacenc
3253 die_license_disabled version3 libvo_amrwbenc
3254
3255 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3256
3257 disabled optimizations || check_cflags -fomit-frame-pointer
3258
3259 enable_pic() {
3260     enable pic
3261     add_cppflags -DPIC
3262     add_cflags   -fPIC
3263     add_asflags  -fPIC
3264 }
3265
3266 enabled pic && enable_pic
3267
3268 check_cc <<EOF || die "Symbol mangling check failed."
3269 int ff_extern;
3270 EOF
3271 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3272 extern_prefix=${sym%%ff_extern*}
3273
3274 check_cc <<EOF && enable_weak inline_asm
3275 void foo(void) { __asm__ volatile ("" ::); }
3276 EOF
3277
3278 _restrict=
3279 for restrict_keyword in restrict __restrict__ __restrict; do
3280     check_cc <<EOF && _restrict=$restrict_keyword && break
3281 void foo(char * $restrict_keyword p);
3282 EOF
3283 done
3284
3285 check_cc <<EOF && enable attribute_packed
3286 struct { int x; } __attribute__((packed)) x;
3287 EOF
3288
3289 check_cc <<EOF && enable attribute_may_alias
3290 union { int x; } __attribute__((may_alias)) x;
3291 EOF
3292
3293 check_cc <<EOF || die "endian test failed"
3294 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3295 EOF
3296 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3297
3298 if enabled alpha; then
3299
3300     check_cflags -mieee
3301
3302 elif enabled arm; then
3303
3304     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3305     enabled thumb && check_cflags -mthumb || check_cflags -marm
3306     nogas=die
3307
3308     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3309         enable vfp_args
3310     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3311         case "${cross_prefix:-$cc}" in
3312             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3313             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3314 __asm__ (".eabi_attribute 28, 1");
3315 int main(void) { return 0; }
3316 EOF
3317         esac
3318         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3319     fi
3320
3321     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3322     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3323     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3324     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3325     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3326     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3327
3328     [ $target_os = linux ] ||
3329         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3330             $ARCH_EXT_LIST_ARM
3331
3332     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3333     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3334
3335     enabled_all armv6t2 shared !pic && enable_pic
3336
3337 elif enabled mips; then
3338
3339     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3340
3341 elif enabled parisc; then
3342
3343     if enabled gcc; then
3344         case $($cc -dumpversion) in
3345             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3346         esac
3347     fi
3348
3349 elif enabled ppc; then
3350
3351     enable local_aligned_8 local_aligned_16
3352
3353     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3354     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3355     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3356     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3357
3358     # AltiVec flags: The FSF version of GCC differs from the Apple version
3359     if enabled altivec; then
3360         nogas=warn
3361         check_cflags -maltivec -mabi=altivec &&
3362         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3363         check_cflags -faltivec
3364
3365         # check if our compiler supports Motorola AltiVec C API
3366         check_cc <<EOF || disable altivec
3367 $inc_altivec_h
3368 int main(void) {
3369     vector signed int v1 = (vector signed int) { 0 };
3370     vector signed int v2 = (vector signed int) { 1 };
3371     v1 = vec_add(v1, v2);
3372     return 0;
3373 }
3374 EOF
3375
3376         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3377     fi
3378
3379 elif enabled sparc; then
3380
3381     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3382
3383 elif enabled x86; then
3384
3385     check_builtin rdtsc    intrin.h   "__rdtsc()"
3386     check_builtin mm_empty mmintrin.h "_mm_empty()"
3387
3388     enable local_aligned_8 local_aligned_16
3389
3390     # check whether EBP is available on x86
3391     # As 'i' is stored on the stack, this program will crash
3392     # if the base pointer is used to access it because the
3393     # base pointer is cleared in the inline assembly code.
3394     check_exec_crash <<EOF && enable ebp_available
3395 volatile int i=0;
3396 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3397 return i;
3398 EOF
3399
3400     # check whether EBX is available on x86
3401     check_inline_asm ebx_available '""::"b"(0)' &&
3402         check_inline_asm ebx_available '"":::"%ebx"'
3403
3404     # check whether xmm clobbers are supported
3405     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3406
3407     # check whether binutils is new enough to compile SSSE3/MMXEXT
3408     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3409     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3410
3411     if ! disabled_any asm mmx yasm; then
3412         if check_cmd $yasmexe --version; then
3413             enabled x86_64 && yasm_extra="-m amd64"
3414             yasm_debug="-g dwarf2"
3415         elif check_cmd nasm -v; then
3416             yasmexe=nasm
3417             yasm_debug="-g -F dwarf"
3418             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3419         fi
3420
3421         YASMFLAGS="-f $objformat $yasm_extra"
3422         enabled pic               && append YASMFLAGS "-DPIC"
3423         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3424         case "$objformat" in
3425             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3426         esac
3427
3428         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3429             die "yasm not found, use --disable-yasm for a crippled build"
3430         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3431         check_yasm "CPU amdnop" && enable cpunop
3432     fi
3433
3434     case "$cpu" in
3435         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3436             disable fast_clz
3437         ;;
3438     esac
3439
3440 fi
3441
3442 if enabled asm; then
3443     as=${gas:=$as}
3444     check_as <<EOF && enable gnu_as || \
3445         $nogas "GNU assembler not found, install gas-preprocessor"
3446 .macro m n
3447 \n: .int 0
3448 .endm
3449 m x
3450 EOF
3451 fi
3452
3453 check_ldflags -Wl,--as-needed
3454
3455 if check_func dlopen; then
3456     ldl=
3457 elif check_func dlopen -ldl; then
3458     ldl=-ldl
3459 fi
3460
3461 if ! disabled network; then
3462     check_type "sys/types.h sys/socket.h" socklen_t
3463     check_type netdb.h "struct addrinfo"
3464     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3465     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3466     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3467     check_type netinet/in.h "struct sockaddr_in6"
3468     check_type poll.h "struct pollfd"
3469     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3470     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3471     check_type netinet/sctp.h "struct sctp_event_subscribe"
3472     check_func getaddrinfo $network_extralibs
3473     check_func getservbyport $network_extralibs
3474     # Prefer arpa/inet.h over winsock2
3475     if check_header arpa/inet.h ; then
3476         check_func closesocket
3477     elif check_header winsock2.h ; then
3478         check_func_headers winsock2.h closesocket -lws2 &&
3479             network_extralibs="-lws2" ||
3480         { check_func_headers winsock2.h closesocket -lws2_32 &&
3481             network_extralibs="-lws2_32"; }
3482         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3483         check_type ws2tcpip.h socklen_t
3484         check_type ws2tcpip.h "struct addrinfo"
3485         check_type ws2tcpip.h "struct group_source_req"
3486         check_type ws2tcpip.h "struct ip_mreq_source"
3487         check_type ws2tcpip.h "struct ipv6_mreq"
3488         check_type winsock2.h "struct pollfd"
3489         check_type ws2tcpip.h "struct sockaddr_in6"
3490         check_type ws2tcpip.h "struct sockaddr_storage"
3491         check_struct winsock2.h "struct sockaddr" sa_len
3492     else
3493         disable network
3494     fi
3495 fi
3496
3497 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3498 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3499
3500 check_func  fcntl
3501 check_func  fork
3502 check_func_headers stdlib.h getenv
3503 check_func  gethrtime
3504 check_func  getopt
3505 check_func  getrusage
3506 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3507 check_func  gettimeofday
3508 check_func  inet_aton $network_extralibs
3509 check_func  isatty
3510 check_func  localtime_r
3511 check_func  ${malloc_prefix}memalign            && enable memalign
3512 check_func  mkstemp
3513 check_func  mmap
3514 check_func  mprotect
3515 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3516 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3517 check_func  setrlimit
3518 check_func  strerror_r
3519 check_func  strptime
3520 check_func  strtok_r
3521 check_func  sched_getaffinity
3522 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3523 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3524 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3525 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3526 check_func  sysconf
3527 check_func  sysctl
3528 check_func  usleep
3529 check_func_headers io.h setmode
3530 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3531 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3532 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3533 check_func_headers windows.h GetProcessAffinityMask
3534 check_func_headers windows.h GetProcessTimes
3535 check_func_headers windows.h GetSystemTimeAsFileTime
3536 check_func_headers windows.h MapViewOfFile
3537 check_func_headers windows.h SetConsoleTextAttribute
3538 check_func_headers windows.h Sleep
3539 check_func_headers windows.h VirtualAlloc
3540
3541 check_header direct.h
3542 check_header dlfcn.h
3543 check_header dxva.h
3544 check_header dxva2api.h
3545 check_header io.h
3546 check_header malloc.h
3547 check_header poll.h
3548 check_header sys/mman.h
3549 check_header sys/param.h
3550 check_header sys/resource.h
3551 check_header sys/select.h
3552 check_header sys/time.h
3553 check_header unistd.h
3554 check_header vdpau/vdpau.h
3555 check_header vdpau/vdpau_x11.h
3556 check_header VideoDecodeAcceleration/VDADecoder.h
3557 check_header windows.h
3558 check_header X11/extensions/XvMClib.h
3559
3560 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3561 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3562
3563 if ! disabled w32threads && ! enabled pthreads; then
3564     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3565 fi
3566
3567 # check for some common methods of building with pthread support
3568 # do this before the optional library checks as some of them require pthreads
3569 if ! disabled pthreads && ! enabled w32threads; then
3570     enable pthreads
3571     if check_func pthread_create; then
3572         :
3573     elif check_func pthread_create -pthread; then
3574         add_cflags -pthread
3575         add_extralibs -pthread
3576     elif check_func pthread_create -pthreads; then
3577         add_cflags -pthreads
3578         add_extralibs -pthreads
3579     elif check_func pthread_create -lpthreadGC2; then
3580         add_extralibs -lpthreadGC2
3581     elif ! check_lib pthread.h pthread_create -lpthread; then
3582         disable pthreads
3583     fi
3584 fi
3585
3586 for thread in $THREADS_LIST; do
3587     if enabled $thread; then
3588         test -n "$thread_type" &&
3589             die "ERROR: Only one thread type must be selected." ||
3590             thread_type="$thread"
3591     fi
3592 done
3593
3594 enabled sync_val_compare_and_swap && enable atomics_gcc
3595 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3596 enabled MemoryBarrier && enable atomics_win32
3597
3598 check_lib math.h sin -lm && LIBM="-lm"
3599 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3600
3601 atan2f_args=2
3602 ldexpf_args=2
3603 powf_args=2
3604
3605 for func in $MATH_FUNCS; do
3606     eval check_mathfunc $func \${${func}_args:-1}
3607 done
3608
3609 # these are off by default, so fail if requested and not available
3610 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3611 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3612 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3613 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3614 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3615 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3616 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3617                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3618                         done || die "ERROR: libgsm not found"; }
3619 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3620 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3621 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3622 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3623 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3624 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3625 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3626 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3627 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3628 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3629 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3630 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3631 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3632 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3633 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3634 enabled libvpx     && {
3635     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3636                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3637     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3638                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3639     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3640     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3641 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3642                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3643                         die "ERROR: libx264 version must be >= 0.118."; }
3644 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3645 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3646 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3647                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3648                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3649                         die "ERROR: openssl not found"; }
3650
3651 if enabled gnutls; then
3652     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3653     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3654 fi
3655
3656 # libdc1394 check
3657 if enabled libdc1394; then
3658     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3659         enable libdc1394_2; } ||
3660     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3661         enable libdc1394_1; } ||
3662     die "ERROR: No version of libdc1394 found "
3663 fi
3664
3665 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3666     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3667     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3668     enable sdl
3669 fi
3670
3671 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3672
3673 check_header linux/fb.h
3674 check_header linux/videodev2.h
3675 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3676
3677 check_header sys/videoio.h
3678
3679 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3680 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3681 # w32api 3.12 had it defined wrong
3682 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3683
3684 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3685 { check_header dev/bktr/ioctl_meteor.h &&
3686   check_header dev/bktr/ioctl_bt848.h; } ||
3687 { check_header machine/ioctl_meteor.h &&
3688   check_header machine/ioctl_bt848.h; } ||
3689 { check_header dev/video/meteor/ioctl_meteor.h &&
3690   check_header dev/video/bktr/ioctl_bt848.h; } ||
3691 check_header dev/ic/bt8xx.h
3692
3693 check_header sndio.h
3694 check_header sys/soundcard.h
3695 check_header soundcard.h
3696
3697 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3698
3699 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3700     check_func jack_port_get_latency_range -ljack
3701
3702 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3703
3704 if enabled libcdio; then
3705     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3706 fi
3707
3708 enabled x11grab                                           &&
3709 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3710 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3711 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3712
3713 enabled vdpau &&
3714     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3715     disable vdpau
3716
3717 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3718
3719 # add some useful compiler flags if supported
3720 check_cflags -Wdeclaration-after-statement
3721 check_cflags -Wall
3722 check_cflags -Wno-parentheses
3723 check_cflags -Wno-switch
3724 check_cflags -Wno-format-zero-length
3725 check_cflags -Wdisabled-optimization
3726 check_cflags -Wpointer-arith
3727 check_cflags -Wredundant-decls
3728 check_cflags -Wno-pointer-sign
3729 check_cflags -Wcast-qual
3730 check_cflags -Wwrite-strings
3731 check_cflags -Wtype-limits
3732 check_cflags -Wundef
3733 check_cflags -Wmissing-prototypes
3734 check_cflags -Wstrict-prototypes
3735 enabled extra_warnings && check_cflags -Winline
3736
3737 # add some linker flags
3738 check_ldflags -Wl,--warn-common
3739 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3740 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3741
3742 enabled xmm_clobber_test &&
3743     check_ldflags -Wl,--wrap,avcodec_open2              \
3744                   -Wl,--wrap,avcodec_decode_audio4      \
3745                   -Wl,--wrap,avcodec_decode_video2      \
3746                   -Wl,--wrap,avcodec_decode_subtitle2   \
3747                   -Wl,--wrap,avcodec_encode_audio2      \
3748                   -Wl,--wrap,avcodec_encode_video       \
3749                   -Wl,--wrap,avcodec_encode_subtitle    \
3750                   -Wl,--wrap,sws_scale ||
3751     disable xmm_clobber_test
3752
3753 echo "X{};" > $TMPV
3754 if test_ldflags -Wl,--version-script,$TMPV; then
3755     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3756     check_cc <<EOF && enable symver_asm_label
3757 void ff_foo(void) __asm__ ("av_foo@VERSION");
3758 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3759 EOF
3760     check_cc <<EOF && enable symver_gnu_asm
3761 __asm__(".symver ff_foo,av_foo@VERSION");
3762 void ff_foo(void) {}
3763 EOF
3764 fi
3765
3766 if [ -z "$optflags" ]; then
3767     if enabled small; then
3768         optflags=$cflags_size
3769     elif enabled optimizations; then
3770         optflags=$cflags_speed
3771     else
3772         optflags=$cflags_noopt
3773     fi
3774 fi
3775
3776 check_optflags(){
3777     check_cflags "$@"
3778     enabled lto && check_ldflags "$@"
3779 }
3780
3781
3782 if enabled lto; then
3783     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3784     check_cflags  -flto
3785     check_ldflags -flto $cpuflags
3786 fi
3787
3788 check_optflags $optflags
3789 check_optflags -fno-math-errno
3790 check_optflags -fno-signed-zeros
3791
3792 if enabled icc; then
3793     # Just warnings, no remarks
3794     check_cflags -w1
3795     # -wd: Disable following warnings
3796     # 144, 167, 556: -Wno-pointer-sign
3797     # 1292: attribute "foo" ignored
3798     # 1419: external declaration in primary source file
3799     # 10006: ignoring unknown option -fno-signed-zeros
3800     # 10148: ignoring unknown option -Wno-parentheses
3801     # 10156: ignoring option '-W'; no argument required
3802     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3803     # 11030: Warning unknown option --as-needed
3804     # 10156: ignoring option '-export'; no argument required
3805     check_ldflags -wd10156,11030
3806     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3807     enable ebp_available
3808     if enabled x86_32; then
3809         icc_version=$($cc -dumpversion)
3810         test ${icc_version%%.*} -ge 11 &&
3811             check_cflags -falign-stack=maintain-16-byte ||
3812             disable aligned_stack
3813     fi
3814 elif enabled ccc; then
3815     # disable some annoying warnings
3816     add_cflags -msg_disable bitnotint
3817     add_cflags -msg_disable mixfuncvoid
3818     add_cflags -msg_disable nonstandcast
3819     add_cflags -msg_disable unsupieee
3820 elif enabled gcc; then
3821     check_optflags -fno-tree-vectorize
3822     check_cflags -Werror=implicit-function-declaration
3823     check_cflags -Werror=missing-prototypes
3824     check_cflags -Werror=return-type
3825     check_cflags -Werror=declaration-after-statement
3826     check_cflags -Werror=vla
3827 elif enabled llvm_gcc; then
3828     check_cflags -mllvm -stack-alignment=16
3829 elif enabled clang; then
3830     check_cflags -mllvm -stack-alignment=16
3831     check_cflags -Qunused-arguments
3832     check_cflags -Werror=implicit-function-declaration
3833     check_cflags -Werror=missing-prototypes
3834     check_cflags -Werror=return-type
3835 elif enabled armcc; then
3836     # 2523: use of inline assembler is deprecated
3837     add_cflags -W${armcc_opt},--diag_suppress=2523
3838     add_cflags -W${armcc_opt},--diag_suppress=1207
3839     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3840     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3841     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3842     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3843 elif enabled tms470; then
3844     add_cflags -pds=824 -pds=837
3845 elif enabled pathscale; then
3846     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3847 elif enabled msvc; then
3848     enabled x86_32 && disable aligned_stack
3849 fi
3850
3851 case $target_os in
3852     osf1)
3853         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3854     ;;
3855     plan9)
3856         add_cppflags -Dmain=plan9_main
3857     ;;
3858 esac
3859
3860 enabled_any $THREADS_LIST      && enable threads
3861 enabled_any $ATOMICS_LIST      && enable atomics_native
3862
3863 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3864
3865 check_deps $CONFIG_LIST       \
3866            $CONFIG_EXTRA      \
3867            $HAVE_LIST         \
3868            $ALL_COMPONENTS    \
3869
3870 ! enabled_any memalign posix_memalign aligned_malloc &&
3871     enabled_any $need_memalign && enable memalign_hack
3872
3873 echo "install prefix            $prefix"
3874 echo "source path               $source_path"
3875 echo "C compiler                $cc"
3876 echo "ARCH                      $arch ($cpu)"
3877 if test "$build_suffix" != ""; then
3878     echo "build suffix              $build_suffix"
3879 fi
3880 if test "$extra_version" != ""; then
3881     echo "version string suffix     $extra_version"
3882 fi
3883 echo "big-endian                ${bigendian-no}"
3884 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3885 if enabled x86; then
3886     echo "${yasmexe}                      ${yasm-no}"
3887     echo "MMX enabled               ${mmx-no}"
3888     echo "MMXEXT enabled            ${mmxext-no}"
3889     echo "3DNow! enabled            ${amd3dnow-no}"
3890     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3891     echo "SSE enabled               ${sse-no}"
3892     echo "SSSE3 enabled             ${ssse3-no}"
3893     echo "AVX enabled               ${avx-no}"
3894     echo "FMA4 enabled              ${fma4-no}"
3895     echo "CMOV enabled              ${cmov-no}"
3896     echo "CMOV is fast              ${fast_cmov-no}"
3897     echo "EBX available             ${ebx_available-no}"
3898     echo "EBP available             ${ebp_available-no}"
3899 fi
3900 if enabled arm; then
3901     echo "ARMv5TE enabled           ${armv5te-no}"
3902     echo "ARMv6 enabled             ${armv6-no}"
3903     echo "ARMv6T2 enabled           ${armv6t2-no}"
3904     echo "VFP enabled               ${vfp-no}"
3905     echo "NEON enabled              ${neon-no}"
3906 fi
3907 if enabled ppc; then
3908     echo "AltiVec enabled           ${altivec-no}"
3909     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3910     echo "dcbzl available           ${dcbzl-no}"
3911 fi
3912 if enabled sparc; then
3913     echo "VIS enabled               ${vis-no}"
3914 fi
3915 echo "debug symbols             ${debug-no}"
3916 echo "optimize for size         ${small-no}"
3917 echo "optimizations             ${optimizations-no}"
3918 echo "static                    ${static-no}"
3919 echo "shared                    ${shared-no}"
3920 echo "new filter support        ${avfilter-no}"
3921 echo "network support           ${network-no}"
3922 echo "threading support         ${thread_type-no}"
3923 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3924 echo "SDL support               ${sdl-no}"
3925 test -n "$random_seed" &&
3926     echo "random seed               ${random_seed}"
3927 echo
3928
3929 echo "External libraries:"
3930 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3931 echo
3932
3933 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3934     echo "Enabled ${type}s:"
3935     eval list=\$$(toupper $type)_LIST
3936     print_enabled '_*' $list | print_3_columns
3937     echo
3938 done
3939
3940 license="LGPL version 2.1 or later"
3941 if enabled nonfree; then
3942     license="nonfree and unredistributable"
3943 elif enabled gplv3; then
3944     license="GPL version 3 or later"
3945 elif enabled lgplv3; then
3946     license="LGPL version 3 or later"
3947 elif enabled gpl; then
3948     license="GPL version 2 or later"
3949 fi
3950
3951 echo "License: $license"
3952
3953 echo "Creating config.mak and config.h..."
3954
3955 test -e Makefile || $ln_s "$source_path/Makefile" .
3956
3957 config_files="$TMPH config.mak"
3958
3959 cat > config.mak <<EOF
3960 # Automatically generated by configure - do not modify!
3961 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3962 prefix=$prefix
3963 LIBDIR=\$(DESTDIR)$libdir
3964 SHLIBDIR=\$(DESTDIR)$shlibdir
3965 INCDIR=\$(DESTDIR)$incdir
3966 BINDIR=\$(DESTDIR)$bindir
3967 DATADIR=\$(DESTDIR)$datadir
3968 MANDIR=\$(DESTDIR)$mandir
3969 SRC_PATH=$source_path
3970 CC_IDENT=$cc_ident
3971 ARCH=$arch
3972 CC=$cc
3973 AS=$as
3974 LD=$ld
3975 DEPCC=$dep_cc
3976 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3977 DEPAS=$as
3978 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3979 YASM=$yasmexe
3980 DEPYASM=$yasmexe
3981 AR=$ar
3982 ARFLAGS=$arflags
3983 AR_O=$ar_o
3984 RANLIB=$ranlib
3985 LN_S=$ln_s
3986 CPPFLAGS=$CPPFLAGS
3987 CFLAGS=$CFLAGS
3988 ASFLAGS=$ASFLAGS
3989 AS_C=$AS_C
3990 AS_O=$AS_O
3991 CC_C=$CC_C
3992 CC_E=$CC_E
3993 CC_O=$CC_O
3994 LD_O=$LD_O
3995 LD_LIB=$LD_LIB
3996 LD_PATH=$LD_PATH
3997 DLLTOOL=$dlltool
3998 LDFLAGS=$LDFLAGS
3999 LDFLAGS-avserver=$AVSERVERLDFLAGS
4000 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4001 YASMFLAGS=$YASMFLAGS
4002 BUILDSUF=$build_suffix
4003 FULLNAME=$FULLNAME
4004 LIBPREF=$LIBPREF
4005 LIBSUF=$LIBSUF
4006 LIBNAME=$LIBNAME
4007 SLIBPREF=$SLIBPREF
4008 SLIBSUF=$SLIBSUF
4009 EXESUF=$EXESUF
4010 EXTRA_VERSION=$extra_version
4011 CCDEP=$CCDEP
4012 CCDEP_FLAGS=$CCDEP_FLAGS
4013 ASDEP=$ASDEP
4014 ASDEP_FLAGS=$ASDEP_FLAGS
4015 CC_DEPFLAGS=$CC_DEPFLAGS
4016 AS_DEPFLAGS=$AS_DEPFLAGS
4017 HOSTCC=$host_cc
4018 HOSTLD=$host_ld
4019 HOSTCFLAGS=$host_cflags
4020 HOSTCPPFLAGS=$host_cppflags
4021 HOSTEXESUF=$HOSTEXESUF
4022 HOSTLDFLAGS=$host_ldflags
4023 HOSTLIBS=$host_libs
4024 DEPHOSTCC=$host_cc
4025 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4026 HOSTCCDEP=$HOSTCCDEP
4027 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4028 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4029 HOSTCC_C=$HOSTCC_C
4030 HOSTCC_O=$HOSTCC_O
4031 HOSTLD_O=$HOSTLD_O
4032 TARGET_EXEC=$target_exec $target_exec_args
4033 TARGET_PATH=$target_path
4034 LIBS-avplay=$sdl_libs
4035 CFLAGS-avplay=$sdl_cflags
4036 ZLIB=$($ldflags_filter -lz)
4037 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4038 EXTRALIBS=$extralibs
4039 COMPAT_OBJS=$compat_objs
4040 EXEOBJS=$exeobjs
4041 INSTALL=install
4042 LIBTARGET=${LIBTARGET}
4043 SLIBNAME=${SLIBNAME}
4044 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4045 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4046 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4047 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4048 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4049 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4050 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4051 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4052 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4053 EOF
4054
4055 get_version(){
4056     lcname=lib${1}
4057     name=$(toupper $lcname)
4058     file=$source_path/$lcname/version.h
4059     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4060     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4061     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4062     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4063     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4064 }
4065
4066 map 'get_version $v' $LIBRARY_LIST
4067
4068 cat > $TMPH <<EOF
4069 /* Automatically generated by configure - do not modify! */
4070 #ifndef LIBAV_CONFIG_H
4071 #define LIBAV_CONFIG_H
4072 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4073 #define LIBAV_LICENSE "$(c_escape $license)"
4074 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4075 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4076 #define restrict $_restrict
4077 #define EXTERN_PREFIX "${extern_prefix}"
4078 #define EXTERN_ASM ${extern_prefix}
4079 #define SLIBSUF "$SLIBSUF"
4080 EOF
4081
4082 test -n "$malloc_prefix" &&
4083     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4084
4085 if enabled yasm; then
4086     append config_files $TMPASM
4087     printf '' >$TMPASM
4088 fi
4089
4090 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4091
4092 print_config ARCH_   "$config_files" $ARCH_LIST
4093 print_config HAVE_   "$config_files" $HAVE_LIST
4094 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4095                                      $CONFIG_EXTRA      \
4096                                      $ALL_COMPONENTS    \
4097
4098 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4099
4100 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4101 cp_if_changed $TMPH config.h
4102 touch .config
4103
4104 enabled yasm && cp_if_changed $TMPASM config.asm
4105
4106 cat > $TMPH <<EOF
4107 /* Generated by ffconf */
4108 #ifndef AVUTIL_AVCONFIG_H
4109 #define AVUTIL_AVCONFIG_H
4110 EOF
4111
4112 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4113
4114 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4115
4116 cp_if_changed $TMPH libavutil/avconfig.h
4117
4118 test -n "$WARNINGS" && printf "\n$WARNINGS"
4119
4120 # build pkg-config files
4121
4122 pkgconfig_generate(){
4123     name=$1
4124     shortname=${name#lib}${build_suffix}
4125     comment=$2
4126     version=$3
4127     libs=$4
4128     requires=$5
4129     enabled ${name#lib} || return 0
4130     mkdir -p $name
4131     cat <<EOF > $name/$name.pc
4132 prefix=$prefix
4133 exec_prefix=\${prefix}
4134 libdir=$libdir
4135 includedir=$incdir
4136
4137 Name: $name
4138 Description: $comment
4139 Version: $version
4140 Requires: $(enabled shared || echo $requires)
4141 Requires.private: $(enabled shared && echo $requires)
4142 Conflicts:
4143 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4144 Libs.private: $(enabled shared && echo $libs)
4145 Cflags: -I\${includedir}
4146 EOF
4147     cat <<EOF > $name/$name-uninstalled.pc
4148 prefix=
4149 exec_prefix=
4150 libdir=\${pcfiledir}
4151 includedir=${source_path}
4152
4153 Name: $name
4154 Description: $comment
4155 Version: $version
4156 Requires: $requires
4157 Conflicts:
4158 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4159 Cflags: -I\${includedir}
4160 EOF
4161 }
4162
4163 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4164 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4165 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4166 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4167
4168 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4169 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4170 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4171 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4172 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$lavfi_libs"
4173 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4174 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"