Add a libfdk-aac decoder
[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 de/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-libwavpack      enable wavpack encoding via libwavpack [no]
204   --enable-libx264         enable H.264 encoding via x264 [no]
205   --enable-libxavs         enable AVS encoding via xavs [no]
206   --enable-libxvid         enable Xvid encoding via xvidcore,
207                            native MPEG-4/Xvid encoder exists [no]
208   --enable-openssl         enable openssl [no]
209   --enable-x11grab         enable X11 grabbing [no]
210   --enable-zlib            enable zlib [autodetect]
211
212 Advanced options (experts only):
213   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
214   --enable-cross-compile   assume a cross-compiler is used
215   --sysroot=PATH           root of cross-build tree
216   --sysinclude=PATH        location of cross-build system headers
217   --target-os=OS           compiler targets OS [$target_os]
218   --target-exec=CMD        command to run executables on target
219   --target-path=DIR        path to view of build directory on target
220   --target-samples=DIR     path to samples directory on target
221   --toolchain=NAME         set tool defaults according to NAME
222   --nm=NM                  use nm tool
223   --ar=AR                  use archive tool AR [$ar_default]
224   --as=AS                  use assembler AS [$as_default]
225   --cc=CC                  use C compiler CC [$cc_default]
226   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
227   --ld=LD                  use linker LD
228   --host-cc=HOSTCC         use host C compiler HOSTCC
229   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
230   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
231   --host-ld=HOSTLD         use host linker HOSTLD
232   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
233   --host-libs=HLIBS        use libs HLIBS when linking for host
234   --host-os=OS             compiler host OS [$target_os]
235   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
236   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
237   --extra-libs=ELIBS       add ELIBS [$ELIBS]
238   --extra-version=STRING   version string suffix []
239   --optflags=OPTFLAGS      override optimization-related compiler flags
240   --build-suffix=SUFFIX    library name suffix []
241   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
242   --arch=ARCH              select architecture [$arch]
243   --cpu=CPU                select the minimum required CPU (affects
244                            instruction selection, may crash on older CPUs)
245   --enable-pic             build position-independent code
246   --enable-sram            allow use of on-chip SRAM
247   --enable-thumb           compile for Thumb instruction set
248   --disable-symver         disable symbol versioning
249   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
250   --disable-safe-bitstream-reader
251                            disable buffer boundary checking in bitreaders
252                            (faster, but may crash)
253   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
254   --enable-lto             use link-time optimization
255
256 Optimization options (experts only):
257   --disable-asm            disable all assembler optimizations
258   --disable-altivec        disable AltiVec optimizations
259   --disable-amd3dnow       disable 3DNow! optimizations
260   --disable-amd3dnowext    disable 3DNow! extended optimizations
261   --disable-mmx            disable MMX optimizations
262   --disable-mmxext         disable MMXEXT optimizations
263   --disable-sse            disable SSE optimizations
264   --disable-sse2           disable SSE2 optimizations
265   --disable-sse3           disable SSE3 optimizations
266   --disable-ssse3          disable SSSE3 optimizations
267   --disable-sse4           disable SSE4 optimizations
268   --disable-sse42          disable SSE4.2 optimizations
269   --disable-avx            disable AVX optimizations
270   --disable-fma4           disable FMA4 optimizations
271   --disable-armv5te        disable armv5te optimizations
272   --disable-armv6          disable armv6 optimizations
273   --disable-armv6t2        disable armv6t2 optimizations
274   --disable-vfp            disable VFP optimizations
275   --disable-neon           disable NEON optimizations
276   --disable-vis            disable VIS optimizations
277   --disable-inline-asm     disable use of inline assembler
278   --disable-yasm           disable use of yasm assembler
279
280 Developer options (useful when working on Libav itself):
281   --disable-debug          disable debugging symbols
282   --enable-debug=LEVEL     set the debug level [$debuglevel]
283   --disable-optimizations  disable compiler optimizations
284   --enable-extra-warnings  enable more compiler warnings
285   --samples=PATH           location of test samples for FATE, if not set use
286                            \$LIBAV_SAMPLES at make invocation time.
287   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
288                            should be used only for debugging purposes)
289   --enable-random          randomly enable/disable components
290   --disable-random
291   --enable-random=LIST     randomly enable/disable specific components or
292   --disable-random=LIST    component groups. LIST is a comma-separated list
293                            of NAME[:PROB] entries where NAME is a component
294                            (group) and PROB the probability associated with
295                            NAME (default 0.5).
296   --random-seed=VALUE      seed value for --enable/disable-random
297
298 NOTE: Object files are built at the place where configure is launched.
299 EOF
300   exit 0
301 }
302
303 quotes='""'
304
305 log(){
306     echo "$@" >> $logfile
307 }
308
309 log_file(){
310     log BEGIN $1
311     pr -n -t $1 >> $logfile
312     log END $1
313 }
314
315 echolog(){
316     log "$@"
317     echo "$@"
318 }
319
320 warn(){
321     log "WARNING: $*"
322     WARNINGS="${WARNINGS}WARNING: $*\n"
323 }
324
325 die(){
326     echolog "$@"
327     cat <<EOF
328
329 If you think configure made a mistake, make sure you are using the latest
330 version from Git.  If the latest version fails, report the problem to the
331 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
332 EOF
333     if disabled logging; then
334         cat <<EOF
335 Rerun configure with logging enabled (do not use --disable-logging), and
336 include the log this produces with your report.
337 EOF
338     else
339         cat <<EOF
340 Include the log file "$logfile" produced by configure as this will help
341 solving the problem.
342 EOF
343     fi
344     exit 1
345 }
346
347 # Avoid locale weirdness, besides we really just want to translate ASCII.
348 toupper(){
349     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
350 }
351
352 tolower(){
353     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
354 }
355
356 c_escape(){
357     echo "$*" | sed 's/["\\]/\\\0/g'
358 }
359
360 sh_quote(){
361     v=$(echo "$1" | sed "s/'/'\\\\''/g")
362     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
363     echo "$v"
364 }
365
366 cleanws(){
367     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
368 }
369
370 filter(){
371     pat=$1
372     shift
373     for v; do
374         eval "case $v in $pat) echo $v ;; esac"
375     done
376 }
377
378 filter_out(){
379     pat=$1
380     shift
381     for v; do
382         eval "case $v in $pat) ;; *) echo $v ;; esac"
383     done
384 }
385
386 map(){
387     m=$1
388     shift
389     for v; do eval $m; done
390 }
391
392 add_suffix(){
393     suffix=$1
394     shift
395     for v; do echo ${v}${suffix}; done
396 }
397
398 set_all(){
399     value=$1
400     shift
401     for var in $*; do
402         eval $var=$value
403     done
404 }
405
406 set_weak(){
407     value=$1
408     shift
409     for var; do
410         eval : \${$var:=$value}
411     done
412 }
413
414 sanitize_var_name(){
415     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
416 }
417
418 set_safe(){
419     var=$1
420     shift
421     eval $(sanitize_var_name "$var")='$*'
422 }
423
424 get_safe(){
425     eval echo \$$(sanitize_var_name "$1")
426 }
427
428 pushvar(){
429     for pvar in $*; do
430         eval level=\${${pvar}_level:=0}
431         eval ${pvar}_${level}="\$$pvar"
432         eval ${pvar}_level=$(($level+1))
433     done
434 }
435
436 popvar(){
437     for pvar in $*; do
438         eval level=\${${pvar}_level:-0}
439         test $level = 0 && continue
440         eval level=$(($level-1))
441         eval $pvar="\${${pvar}_${level}}"
442         eval ${pvar}_level=$level
443         eval unset ${pvar}_${level}
444     done
445 }
446
447 enable(){
448     set_all yes $*
449 }
450
451 disable(){
452     set_all no $*
453 }
454
455 enable_weak(){
456     set_weak yes $*
457 }
458
459 disable_weak(){
460     set_weak no $*
461 }
462
463 enable_safe(){
464     for var; do
465         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
466     done
467 }
468
469 disable_safe(){
470     for var; do
471         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
472     done
473 }
474
475 do_enable_deep(){
476     for var; do
477         enabled $var && continue
478         eval sel="\$${var}_select"
479         eval sgs="\$${var}_suggest"
480         pushvar var sgs
481         enable_deep $sel
482         popvar sgs
483         enable_deep_weak $sgs
484         popvar var
485     done
486 }
487
488 enable_deep(){
489     do_enable_deep $*
490     enable $*
491 }
492
493 enable_deep_weak(){
494     for var; do
495         disabled $var && continue
496         pushvar var
497         do_enable_deep $var
498         popvar var
499         enable_weak $var
500     done
501 }
502
503 enabled(){
504     test "${1#!}" = "$1" && op== || op=!=
505     eval test "x\$${1#!}" $op "xyes"
506 }
507
508 disabled(){
509     test "${1#!}" = "$1" && op== || op=!=
510     eval test "x\$${1#!}" $op "xno"
511 }
512
513 enabled_all(){
514     for opt; do
515         enabled $opt || return 1
516     done
517 }
518
519 disabled_all(){
520     for opt; do
521         disabled $opt || return 1
522     done
523 }
524
525 enabled_any(){
526     for opt; do
527         enabled $opt && return 0
528     done
529 }
530
531 disabled_any(){
532     for opt; do
533         disabled $opt && return 0
534     done
535     return 1
536 }
537
538 set_default(){
539     for opt; do
540         eval : \${$opt:=\$${opt}_default}
541     done
542 }
543
544 is_in(){
545     value=$1
546     shift
547     for var in $*; do
548         [ $var = $value ] && return 0
549     done
550     return 1
551 }
552
553 do_check_deps(){
554     for cfg; do
555         cfg="${cfg#!}"
556         enabled ${cfg}_checking && die "Circular dependency for $cfg."
557         disabled ${cfg}_checking && continue
558         enable ${cfg}_checking
559         append allopts $cfg
560
561         eval dep_all="\$${cfg}_deps"
562         eval dep_any="\$${cfg}_deps_any"
563         eval dep_sel="\$${cfg}_select"
564         eval dep_sgs="\$${cfg}_suggest"
565         eval dep_ifa="\$${cfg}_if"
566         eval dep_ifn="\$${cfg}_if_any"
567
568         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
569         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
570         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
571
572         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
573         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
574         enabled_all  $dep_all || disable $cfg
575         enabled_any  $dep_any || disable $cfg
576         disabled_any $dep_sel && disable $cfg
577
578         if enabled $cfg; then
579             enable_deep $dep_sel
580             enable_deep_weak $dep_sgs
581         fi
582
583         disable ${cfg}_checking
584     done
585 }
586
587 check_deps(){
588     unset allopts
589
590     do_check_deps "$@"
591
592     for cfg in $allopts; do
593         enabled $cfg || continue
594         eval dep_extralibs="\$${cfg}_extralibs"
595         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
596     done
597 }
598
599 print_config(){
600     pfx=$1
601     files=$2
602     shift 2
603     map 'eval echo "$v \${$v:-no}"' "$@" |
604     awk "BEGIN { split(\"$files\", files) }
605         {
606             c = \"$pfx\" toupper(\$1);
607             v = \$2;
608             sub(/yes/, 1, v);
609             sub(/no/,  0, v);
610             for (f in files) {
611                 file = files[f];
612                 if (file ~ /\\.h\$/) {
613                     printf(\"#define %s %d\\n\", c, v) >>file;
614                 } else if (file ~ /\\.asm\$/) {
615                     printf(\"%%define %s %d\\n\", c, v) >>file;
616                 } else if (file ~ /\\.mak\$/) {
617                     n = -v ? \"\" : \"!\";
618                     printf(\"%s%s=yes\\n\", n, c) >>file;
619                 }
620             }
621         }"
622 }
623
624 print_enabled(){
625     suf=$1
626     shift
627     for v; do
628         enabled $v && printf "%s\n" ${v%$suf};
629     done
630 }
631
632 append(){
633     var=$1
634     shift
635     eval "$var=\"\$$var $*\""
636 }
637
638 prepend(){
639     var=$1
640     shift
641     eval "$var=\"$* \$$var\""
642 }
643
644 add_cppflags(){
645     append CPPFLAGS "$@"
646 }
647
648 add_cflags(){
649     append CFLAGS $($cflags_filter "$@")
650 }
651
652 add_asflags(){
653     append ASFLAGS $($asflags_filter "$@")
654 }
655
656 add_ldflags(){
657     append LDFLAGS $($ldflags_filter "$@")
658 }
659
660 add_extralibs(){
661     prepend extralibs $($ldflags_filter "$@")
662 }
663
664 add_host_cppflags(){
665     append host_cppflags "$@"
666 }
667
668 add_host_cflags(){
669     append host_cflags $($host_cflags_filter "$@")
670 }
671
672 add_host_ldflags(){
673     append host_ldflags $($host_ldflags_filter "$@")
674 }
675
676 add_compat(){
677     append compat_objs $1
678     shift
679     map 'add_cppflags -D$v' "$@"
680 }
681
682 check_cmd(){
683     log "$@"
684     "$@" >> $logfile 2>&1
685 }
686
687 cc_o(){
688     eval printf '%s\\n' $CC_O
689 }
690
691 cc_e(){
692     eval printf '%s\\n' $CC_E
693 }
694
695 check_cc(){
696     log check_cc "$@"
697     cat > $TMPC
698     log_file $TMPC
699     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
700 }
701
702 check_cpp(){
703     log check_cpp "$@"
704     cat > $TMPC
705     log_file $TMPC
706     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
707 }
708
709 as_o(){
710     eval printf '%s\\n' $AS_O
711 }
712
713 check_as(){
714     log check_as "$@"
715     cat > $TMPS
716     log_file $TMPS
717     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
718 }
719
720 check_inline_asm(){
721     log check_inline_asm "$@"
722     name="$1"
723     code="$2"
724     shift 2
725     disable $name
726     check_cc "$@" <<EOF && enable $name
727 void foo(void){ __asm__ volatile($code); }
728 EOF
729 }
730
731 check_insn(){
732     log check_insn "$@"
733     check_inline_asm ${1}_inline "\"$2\""
734     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
735 }
736
737 check_yasm(){
738     log check_yasm "$@"
739     echo "$1" > $TMPS
740     log_file $TMPS
741     shift 1
742     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
743 }
744
745 ld_o(){
746     eval printf '%s\\n' $LD_O
747 }
748
749 check_ld(){
750     log check_ld "$@"
751     flags=$(filter_out '-l*' "$@")
752     libs=$(filter '-l*' "$@")
753     check_cc $($cflags_filter $flags) || return
754     flags=$($ldflags_filter $flags)
755     libs=$($ldflags_filter $libs)
756     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
757 }
758
759 check_code(){
760     log check_code "$@"
761     check=$1
762     headers=$2
763     code=$3
764     shift 3
765     {
766         for hdr in $headers; do
767             echo "#include <$hdr>"
768         done
769         echo "int main(void) { $code; return 0; }"
770     } | check_$check "$@"
771 }
772
773 check_cppflags(){
774     log check_cppflags "$@"
775     check_cc "$@" <<EOF && append CPPFLAGS "$@"
776 int x;
777 EOF
778 }
779
780 check_cflags(){
781     log check_cflags "$@"
782     set -- $($cflags_filter "$@")
783     check_cc "$@" <<EOF && append CFLAGS "$@"
784 int x;
785 EOF
786 }
787
788 test_ldflags(){
789     log test_ldflags "$@"
790     check_ld "$@" <<EOF
791 int main(void){ return 0; }
792 EOF
793 }
794
795 check_ldflags(){
796     log check_ldflags "$@"
797     test_ldflags "$@" && add_ldflags "$@"
798 }
799
800 check_header(){
801     log check_header "$@"
802     header=$1
803     shift
804     disable_safe $header
805     check_cpp "$@" <<EOF && enable_safe $header
806 #include <$header>
807 int x;
808 EOF
809 }
810
811 check_func(){
812     log check_func "$@"
813     func=$1
814     shift
815     disable $func
816     check_ld "$@" <<EOF && enable $func
817 extern int $func();
818 int main(void){ $func(); }
819 EOF
820 }
821
822 check_mathfunc(){
823     log check_mathfunc "$@"
824     func=$1
825     narg=$2
826     shift 2
827     test $narg = 2 && args="f, g" || args="f"
828     disable $func
829     check_ld "$@" <<EOF && enable $func
830 #include <math.h>
831 float foo(float f, float g) { return $func($args); }
832 int main(void){ return 0; }
833 EOF
834 }
835
836 check_func_headers(){
837     log check_func_headers "$@"
838     headers=$1
839     funcs=$2
840     shift 2
841     {
842         for hdr in $headers; do
843             echo "#include <$hdr>"
844         done
845         for func in $funcs; do
846             echo "long check_$func(void) { return (long) $func; }"
847         done
848         echo "int main(void) { return 0; }"
849     } | check_ld "$@" && enable $funcs && enable_safe $headers
850 }
851
852 check_cpp_condition(){
853     log check_cpp_condition "$@"
854     header=$1
855     condition=$2
856     shift 2
857     check_cpp "$@" <<EOF
858 #include <$header>
859 #if !($condition)
860 #error "unsatisfied condition: $condition"
861 #endif
862 EOF
863 }
864
865 check_lib(){
866     log check_lib "$@"
867     header="$1"
868     func="$2"
869     shift 2
870     check_header $header && check_func $func "$@" && add_extralibs "$@"
871 }
872
873 check_lib2(){
874     log check_lib2 "$@"
875     headers="$1"
876     funcs="$2"
877     shift 2
878     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
879 }
880
881 check_pkg_config(){
882     log check_pkg_config "$@"
883     pkg="$1"
884     headers="$2"
885     funcs="$3"
886     shift 3
887     $pkg_config --exists $pkg || return
888     pkg_cflags=$($pkg_config --cflags $pkg)
889     pkg_libs=$($pkg_config --libs $pkg)
890     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
891         set_safe ${pkg}_cflags $pkg_cflags   &&
892         set_safe ${pkg}_libs   $pkg_libs
893 }
894
895 check_exec(){
896     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
897 }
898
899 check_exec_crash(){
900     code=$(cat)
901
902     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
903     # are safe but may not be available everywhere.  Thus we use
904     # raise(SIGTERM) instead.  The check is run in a subshell so we
905     # can redirect the "Terminated" message from the shell.  SIGBUS
906     # is not defined by standard C so it is used conditionally.
907
908     (check_exec "$@") >> $logfile 2>&1 <<EOF
909 #include <signal.h>
910 static void sighandler(int sig){
911     raise(SIGTERM);
912 }
913 int foo(void){
914     $code
915 }
916 int (*func_ptr)(void) = foo;
917 int main(void){
918     signal(SIGILL, sighandler);
919     signal(SIGFPE, sighandler);
920     signal(SIGSEGV, sighandler);
921 #ifdef SIGBUS
922     signal(SIGBUS, sighandler);
923 #endif
924     return func_ptr();
925 }
926 EOF
927 }
928
929 check_type(){
930     log check_type "$@"
931     headers=$1
932     type=$2
933     shift 2
934     disable_safe "$type"
935     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
936 }
937
938 check_struct(){
939     log check_struct "$@"
940     headers=$1
941     struct=$2
942     member=$3
943     shift 3
944     disable_safe "${struct}_${member}"
945     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
946         enable_safe "${struct}_${member}"
947 }
948
949 check_builtin(){
950     log check_builtin "$@"
951     name=$1
952     headers=$2
953     builtin=$3
954     shift 3
955     disable "$name"
956     check_code ld "$headers" "$builtin" "$@" && enable "$name"
957 }
958
959 require(){
960     name="$1"
961     header="$2"
962     func="$3"
963     shift 3
964     check_lib $header $func "$@" || die "ERROR: $name not found"
965 }
966
967 require2(){
968     name="$1"
969     headers="$2"
970     func="$3"
971     shift 3
972     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
973 }
974
975 require_pkg_config(){
976     pkg="$1"
977     check_pkg_config "$@" || die "ERROR: $pkg not found"
978     add_cflags    $(get_safe ${pkg}_cflags)
979     add_extralibs $(get_safe ${pkg}_libs)
980 }
981
982 hostcc_o(){
983     eval printf '%s\\n' $HOSTCC_O
984 }
985
986 check_host_cc(){
987     log check_host_cc "$@"
988     cat > $TMPC
989     log_file $TMPC
990     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
991 }
992
993 check_host_cppflags(){
994     log check_host_cppflags "$@"
995     check_host_cc "$@" <<EOF && append host_cppflags "$@"
996 int x;
997 EOF
998 }
999
1000 check_host_cflags(){
1001     log check_host_cflags "$@"
1002     set -- $($host_cflags_filter "$@")
1003     check_host_cc "$@" <<EOF && append host_cflags "$@"
1004 int x;
1005 EOF
1006 }
1007
1008 apply(){
1009     file=$1
1010     shift
1011     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1012 }
1013
1014 cp_if_changed(){
1015     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1016     mkdir -p "$(dirname $2)"
1017     $cp_f "$1" "$2"
1018 }
1019
1020 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1021 # system-dependent things.
1022
1023 COMPONENT_LIST="
1024     bsfs
1025     decoders
1026     demuxers
1027     encoders
1028     filters
1029     hwaccels
1030     indevs
1031     muxers
1032     outdevs
1033     parsers
1034     protocols
1035 "
1036
1037 EXTERNAL_LIBRARY_LIST="
1038     avisynth
1039     bzlib
1040     frei0r
1041     gnutls
1042     libcdio
1043     libdc1394
1044     libfaac
1045     libfdk_aac
1046     libfreetype
1047     libgsm
1048     libilbc
1049     libmp3lame
1050     libopencore_amrnb
1051     libopencore_amrwb
1052     libopencv
1053     libopenjpeg
1054     libopus
1055     libpulse
1056     librtmp
1057     libschroedinger
1058     libspeex
1059     libtheora
1060     libvo_aacenc
1061     libvo_amrwbenc
1062     libvorbis
1063     libvpx
1064     libwavpack
1065     libx264
1066     libxavs
1067     libxvid
1068     openssl
1069     x11grab
1070     zlib
1071 "
1072
1073 HWACCEL_LIST="
1074     dxva2
1075     vaapi
1076     vda
1077     vdpau
1078 "
1079 LIBRARY_LIST="
1080     avcodec
1081     avdevice
1082     avfilter
1083     avformat
1084     avresample
1085     avutil
1086     swscale
1087 "
1088
1089 PROGRAM_LIST="
1090     avconv
1091     avplay
1092     avprobe
1093     avserver
1094 "
1095
1096 CONFIG_LIST="
1097     $COMPONENT_LIST
1098     $EXTERNAL_LIBRARY_LIST
1099     $HWACCEL_LIST
1100     $LIBRARY_LIST
1101     $PROGRAM_LIST
1102     dct
1103     doc
1104     error_resilience
1105     fft
1106     gpl
1107     gray
1108     hardcoded_tables
1109     lsp
1110     lzo
1111     mdct
1112     memalign_hack
1113     network
1114     nonfree
1115     pic
1116     rdft
1117     runtime_cpudetect
1118     safe_bitstream_reader
1119     shared
1120     small
1121     sram
1122     static
1123     swscale_alpha
1124     thumb
1125     version3
1126     xmm_clobber_test
1127 "
1128
1129 THREADS_LIST='
1130     pthreads
1131     w32threads
1132 '
1133
1134 ATOMICS_LIST='
1135     atomics_gcc
1136     atomics_suncc
1137     atomics_win32
1138 '
1139
1140 ARCH_LIST='
1141     aarch64
1142     alpha
1143     arm
1144     avr32
1145     avr32_ap
1146     avr32_uc
1147     bfin
1148     ia64
1149     m68k
1150     mips
1151     mips64
1152     parisc
1153     ppc
1154     ppc64
1155     s390
1156     sh4
1157     sparc
1158     sparc64
1159     tilegx
1160     tilepro
1161     tomi
1162     x86
1163     x86_32
1164     x86_64
1165 '
1166
1167 ARCH_EXT_LIST_ARM='
1168     armv5te
1169     armv6
1170     armv6t2
1171     neon
1172     vfp
1173     vfpv3
1174 '
1175
1176 ARCH_EXT_LIST_X86='
1177     amd3dnow
1178     amd3dnowext
1179     avx
1180     fma4
1181     mmx
1182     mmxext
1183     sse
1184     sse2
1185     sse3
1186     sse4
1187     sse42
1188     ssse3
1189 '
1190
1191 ARCH_EXT_LIST="
1192     $ARCH_EXT_LIST_ARM
1193     $ARCH_EXT_LIST_X86
1194     altivec
1195     ppc4xx
1196     vis
1197 "
1198
1199 HAVE_LIST_CMDLINE='
1200     inline_asm
1201     symver
1202     yasm
1203 '
1204
1205 HAVE_LIST_PUB='
1206     bigendian
1207     fast_unaligned
1208 '
1209
1210 MATH_FUNCS="
1211     atanf
1212     atan2f
1213     cbrtf
1214     cosf
1215     exp2
1216     exp2f
1217     expf
1218     isinf
1219     isnan
1220     ldexpf
1221     llrint
1222     llrintf
1223     log2
1224     log2f
1225     log10f
1226     lrint
1227     lrintf
1228     powf
1229     rint
1230     round
1231     roundf
1232     sinf
1233     trunc
1234     truncf
1235 "
1236
1237 HAVE_LIST="
1238     $ARCH_EXT_LIST
1239     $(add_suffix _external $ARCH_EXT_LIST)
1240     $(add_suffix _inline   $ARCH_EXT_LIST)
1241     $HAVE_LIST_CMDLINE
1242     $HAVE_LIST_PUB
1243     $THREADS_LIST
1244     $ATOMICS_LIST
1245     $MATH_FUNCS
1246     aligned_malloc
1247     aligned_stack
1248     alsa_asoundlib_h
1249     altivec_h
1250     arpa_inet_h
1251     asm_mod_q
1252     asm_mod_y
1253     atomic_cas_ptr
1254     atomics_native
1255     attribute_may_alias
1256     attribute_packed
1257     cdio_paranoia_h
1258     cdio_paranoia_paranoia_h
1259     closesocket
1260     CommandLineToArgvW
1261     cpunop
1262     CryptGenRandom
1263     dcbzl
1264     dev_bktr_ioctl_bt848_h
1265     dev_bktr_ioctl_meteor_h
1266     dev_ic_bt8xx_h
1267     dev_video_bktr_ioctl_bt848_h
1268     dev_video_meteor_ioctl_meteor_h
1269     direct_h
1270     dlfcn_h
1271     dlopen
1272     dos_paths
1273     dxva_h
1274     ebp_available
1275     ebx_available
1276     fast_64bit
1277     fast_clz
1278     fast_cmov
1279     fcntl
1280     fork
1281     getaddrinfo
1282     gethrtime
1283     getopt
1284     GetProcessAffinityMask
1285     GetProcessMemoryInfo
1286     GetProcessTimes
1287     GetSystemTimeAsFileTime
1288     getrusage
1289     getservbyport
1290     gettimeofday
1291     gnu_as
1292     gsm_h
1293     i686
1294     ibm_asm
1295     inet_aton
1296     io_h
1297     inline_asm_labels
1298     isatty
1299     jack_port_get_latency_range
1300     ldbrx
1301     libdc1394_1
1302     libdc1394_2
1303     local_aligned_16
1304     local_aligned_8
1305     localtime_r
1306     loongson
1307     machine_ioctl_bt848_h
1308     machine_ioctl_meteor_h
1309     machine_rw_barrier
1310     malloc_h
1311     MapViewOfFile
1312     memalign
1313     MemoryBarrier
1314     mkstemp
1315     mm_empty
1316     mmap
1317     mprotect
1318     msvcrt
1319     nanosleep
1320     poll_h
1321     posix_memalign
1322     pragma_deprecated
1323     rdtsc
1324     sched_getaffinity
1325     sdl
1326     SetConsoleTextAttribute
1327     setmode
1328     setrlimit
1329     Sleep
1330     sndio_h
1331     socklen_t
1332     soundcard_h
1333     strerror_r
1334     strptime
1335     strtok_r
1336     struct_addrinfo
1337     struct_group_source_req
1338     struct_ip_mreq_source
1339     struct_ipv6_mreq
1340     struct_pollfd
1341     struct_rusage_ru_maxrss
1342     struct_sockaddr_in6
1343     struct_sockaddr_sa_len
1344     struct_sockaddr_storage
1345     struct_v4l2_frmivalenum_discrete
1346     symver_asm_label
1347     symver_gnu_asm
1348     sync_val_compare_and_swap
1349     sysconf
1350     sysctl
1351     sys_mman_h
1352     sys_param_h
1353     sys_resource_h
1354     sys_select_h
1355     sys_soundcard_h
1356     sys_time_h
1357     sys_un_h
1358     sys_videoio_h
1359     threads
1360     unistd_h
1361     usleep
1362     vfp_args
1363     VirtualAlloc
1364     windows_h
1365     winsock2_h
1366     xform_asm
1367     xmm_clobbers
1368 "
1369
1370 # options emitted with CONFIG_ prefix but not available on the command line
1371 CONFIG_EXTRA="
1372     aandcttables
1373     ac3dsp
1374     audio_frame_queue
1375     dsputil
1376     gcrypt
1377     golomb
1378     gplv3
1379     h264chroma
1380     h264dsp
1381     h264pred
1382     h264qpel
1383     hpeldsp
1384     huffman
1385     lgplv3
1386     lpc
1387     mpegaudio
1388     mpegaudiodsp
1389     mpegvideo
1390     mpegvideoenc
1391     nettle
1392     rangecoder
1393     riffdec
1394     riffenc
1395     rtpdec
1396     rtpenc_chain
1397     sinewin
1398     videodsp
1399     vp3dsp
1400 "
1401
1402 CMDLINE_SELECT="
1403     $ARCH_EXT_LIST
1404     $CONFIG_LIST
1405     $HAVE_LIST_CMDLINE
1406     $THREADS_LIST
1407     asm
1408     cross_compile
1409     debug
1410     extra_warnings
1411     logging
1412     lto
1413     optimizations
1414 "
1415
1416 PATHS_LIST='
1417     bindir
1418     datadir
1419     incdir
1420     libdir
1421     mandir
1422     prefix
1423     shlibdir
1424 '
1425
1426 CMDLINE_SET="
1427     $PATHS_LIST
1428     ar
1429     arch
1430     as
1431     build_suffix
1432     cc
1433     cpu
1434     cross_prefix
1435     dep_cc
1436     extra_version
1437     host_cc
1438     host_cflags
1439     host_ld
1440     host_ldflags
1441     host_libs
1442     host_os
1443     ld
1444     logfile
1445     malloc_prefix
1446     nm
1447     optflags
1448     pkg_config
1449     random_seed
1450     samples
1451     sysinclude
1452     sysroot
1453     target_exec
1454     target_os
1455     target_path
1456     target_samples
1457     toolchain
1458 "
1459
1460 CMDLINE_APPEND="
1461     extra_cflags
1462     host_cppflags
1463 "
1464
1465 # code dependency declarations
1466
1467 # architecture extensions
1468
1469 armv5te_deps="arm"
1470 armv6_deps="arm"
1471 armv6t2_deps="arm"
1472 neon_deps="arm"
1473 vfp_deps="arm"
1474 vfpv3_deps="vfp"
1475
1476 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1477
1478 altivec_deps="ppc"
1479 ppc4xx_deps="ppc"
1480
1481 vis_deps="sparc"
1482
1483 x86_64_suggest="fast_cmov i686"
1484
1485 amd3dnow_deps="mmx"
1486 amd3dnowext_deps="amd3dnow"
1487 mmx_deps="x86"
1488 mmxext_deps="mmx"
1489 sse_deps="mmxext"
1490 sse2_deps="sse"
1491 sse3_deps="sse2"
1492 ssse3_deps="sse3"
1493 sse4_deps="ssse3"
1494 sse42_deps="sse4"
1495 avx_deps="sse42"
1496 fma4_deps="avx"
1497
1498 mmx_external_deps="yasm"
1499 mmx_inline_deps="inline_asm"
1500 mmx_suggest="mmx_external mmx_inline"
1501
1502 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1503     eval dep=\$${ext}_deps
1504     eval ${ext}_external_deps='"${dep}_external"'
1505     eval ${ext}_inline_deps='"${dep}_inline"'
1506     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1507 done
1508
1509 aligned_stack_if_any="ppc x86"
1510 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1511 fast_clz_if_any="alpha avr32 mips ppc x86"
1512 fast_unaligned_if_any="ppc x86"
1513
1514 inline_asm_deps="!tms470"
1515 need_memalign="altivec neon sse"
1516
1517 symver_if_any="symver_asm_label symver_gnu_asm"
1518
1519 log2_deps="!msvcrt"
1520
1521 # subsystems
1522 dct_select="rdft"
1523 error_resilience_select="dsputil"
1524 lpc_select="dsputil"
1525 mdct_select="fft"
1526 rdft_select="fft"
1527 mpegaudio_select="mpegaudiodsp"
1528 mpegaudiodsp_select="dct"
1529 mpegvideo_select="dsputil hpeldsp videodsp"
1530 mpegvideoenc_select="mpegvideo"
1531
1532 # decoders / encoders
1533 aac_decoder_select="mdct sinewin"
1534 aac_encoder_select="audio_frame_queue mdct sinewin"
1535 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1536 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1537 ac3_encoder_select="mdct ac3dsp dsputil"
1538 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1539 aic_decoder_select="dsputil golomb"
1540 alac_encoder_select="lpc"
1541 als_decoder_select="dsputil"
1542 amrnb_decoder_select="lsp"
1543 amrwb_decoder_select="lsp"
1544 amv_decoder_select="dsputil hpeldsp"
1545 ape_decoder_select="dsputil"
1546 asv1_decoder_select="dsputil"
1547 asv1_encoder_select="dsputil"
1548 asv2_decoder_select="dsputil"
1549 asv2_encoder_select="dsputil"
1550 atrac1_decoder_select="mdct sinewin"
1551 atrac3_decoder_select="mdct"
1552 bink_decoder_select="dsputil hpeldsp"
1553 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1554 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1555 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1556 cllc_decoder_select="dsputil"
1557 comfortnoise_encoder_select="lpc"
1558 cook_decoder_select="dsputil mdct sinewin"
1559 cscd_decoder_select="lzo"
1560 cscd_decoder_suggest="zlib"
1561 dca_decoder_select="mdct"
1562 dnxhd_decoder_select="dsputil"
1563 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1564 dvvideo_decoder_select="dsputil"
1565 dvvideo_encoder_select="dsputil"
1566 dxa_decoder_deps="zlib"
1567 eac3_decoder_select="ac3_decoder"
1568 eac3_encoder_select="ac3_encoder"
1569 eamad_decoder_select="aandcttables dsputil mpegvideo"
1570 eatgq_decoder_select="aandcttables dsputil"
1571 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1572 ffv1_decoder_select="dsputil golomb rangecoder"
1573 ffv1_encoder_select="dsputil rangecoder"
1574 ffvhuff_decoder_select="dsputil"
1575 ffvhuff_encoder_select="dsputil huffman"
1576 flac_decoder_select="golomb"
1577 flac_encoder_select="dsputil golomb lpc"
1578 flashsv_decoder_deps="zlib"
1579 flashsv_encoder_deps="zlib"
1580 flashsv2_decoder_deps="zlib"
1581 flv_decoder_select="h263_decoder"
1582 flv_encoder_select="h263_encoder"
1583 fourxm_decoder_select="dsputil"
1584 fraps_decoder_select="dsputil huffman"
1585 g2m_decoder_deps="zlib"
1586 g2m_decoder_select="dsputil"
1587 h261_decoder_select="error_resilience mpegvideo"
1588 h261_encoder_select="aandcttables mpegvideoenc"
1589 h263_decoder_select="error_resilience h263_parser mpegvideo"
1590 h263_encoder_select="aandcttables mpegvideoenc"
1591 h263i_decoder_select="h263_decoder"
1592 h263p_encoder_select="h263_encoder"
1593 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1594 h264_decoder_suggest="error_resilience"
1595 huffyuv_decoder_select="dsputil"
1596 huffyuv_encoder_select="dsputil huffman"
1597 iac_decoder_select="dsputil fft mdct sinewin"
1598 imc_decoder_select="dsputil fft mdct sinewin"
1599 indeo3_decoder_select="hpeldsp"
1600 interplay_video_decoder_select="hpeldsp"
1601 jpegls_decoder_select="dsputil golomb hpeldsp"
1602 jpegls_encoder_select="golomb"
1603 jv_decoder_select="dsputil"
1604 lagarith_decoder_select="dsputil"
1605 ljpeg_encoder_select="aandcttables mpegvideoenc"
1606 loco_decoder_select="golomb"
1607 mdec_decoder_select="dsputil error_resilience mpegvideo"
1608 metasound_decoder_select="lsp mdct sinewin"
1609 mimic_decoder_select="dsputil hpeldsp"
1610 mjpeg_decoder_select="dsputil hpeldsp"
1611 mjpegb_decoder_select="dsputil hpeldsp"
1612 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1613 mlp_decoder_select="dsputil mlp_parser"
1614 motionpixels_decoder_select="dsputil"
1615 mp1_decoder_select="mpegaudio"
1616 mp1float_decoder_select="mpegaudio"
1617 mp2_decoder_select="mpegaudio"
1618 mp2float_decoder_select="mpegaudio"
1619 mp3_decoder_select="mpegaudio"
1620 mp3adu_decoder_select="mpegaudio"
1621 mp3adufloat_decoder_select="mpegaudio"
1622 mp3float_decoder_select="mpegaudio"
1623 mp3on4_decoder_select="mpegaudio"
1624 mp3on4float_decoder_select="mpegaudio"
1625 mpc7_decoder_select="dsputil mpegaudiodsp"
1626 mpc8_decoder_select="dsputil mpegaudiodsp"
1627 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1628 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1629 mpeg1video_decoder_select="error_resilience mpegvideo"
1630 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1631 mpeg2video_decoder_select="error_resilience mpegvideo"
1632 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1633 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1634 mpeg4_encoder_select="h263_encoder"
1635 msmpeg4v1_decoder_select="h263_decoder"
1636 msmpeg4v2_decoder_select="h263_decoder"
1637 msmpeg4v2_encoder_select="h263_encoder"
1638 msmpeg4v3_decoder_select="h263_decoder"
1639 msmpeg4v3_encoder_select="h263_encoder"
1640 mss2_decoder_select="error_resilience vc1_decoder"
1641 mxpeg_decoder_select="dsputil hpeldsp"
1642 nellymoser_decoder_select="mdct sinewin"
1643 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1644 nuv_decoder_select="dsputil lzo"
1645 png_decoder_deps="zlib"
1646 png_decoder_select="dsputil"
1647 png_encoder_deps="zlib"
1648 png_encoder_select="dsputil"
1649 prores_decoder_select="dsputil"
1650 prores_encoder_select="dsputil"
1651 qcelp_decoder_select="lsp"
1652 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1653 ra_144_encoder_select="audio_frame_queue lpc"
1654 ralf_decoder_select="golomb"
1655 rv10_decoder_select="error_resilience h263_decoder"
1656 rv10_encoder_select="h263_encoder"
1657 rv20_decoder_select="error_resilience h263_decoder"
1658 rv20_encoder_select="h263_encoder"
1659 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1660 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1661 shorten_decoder_select="golomb"
1662 sipr_decoder_select="lsp"
1663 sp5x_decoder_select="dsputil hpeldsp"
1664 svq1_decoder_select="hpeldsp"
1665 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1666 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1667 svq3_decoder_suggest="error_resilience zlib"
1668 tak_decoder_select="dsputil"
1669 theora_decoder_select="vp3_decoder"
1670 tiff_decoder_suggest="zlib"
1671 tiff_encoder_suggest="zlib"
1672 thp_decoder_select="dsputil hpeldsp"
1673 truehd_decoder_select="mlp_decoder"
1674 truemotion2_decoder_select="dsputil"
1675 truespeech_decoder_select="dsputil"
1676 tscc_decoder_deps="zlib"
1677 twinvq_decoder_select="mdct lsp sinewin"
1678 utvideo_decoder_select="dsputil"
1679 utvideo_encoder_select="dsputil huffman"
1680 vble_decoder_select="dsputil"
1681 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1682 vc1image_decoder_select="vc1_decoder"
1683 vorbis_decoder_select="mdct"
1684 vorbis_encoder_select="mdct"
1685 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1686 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1687 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1688 vp6a_decoder_select="vp6_decoder"
1689 vp6f_decoder_select="vp6_decoder"
1690 vp8_decoder_select="h264pred videodsp"
1691 wmapro_decoder_select="mdct sinewin"
1692 wmav1_decoder_select="mdct sinewin"
1693 wmav1_encoder_select="mdct sinewin"
1694 wmav2_decoder_select="mdct sinewin"
1695 wmav2_encoder_select="mdct sinewin"
1696 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1697 wmv1_decoder_select="h263_decoder"
1698 wmv1_encoder_select="h263_encoder"
1699 wmv2_decoder_select="h263_decoder videodsp"
1700 wmv2_encoder_select="h263_encoder"
1701 wmv3_decoder_select="vc1_decoder"
1702 wmv3image_decoder_select="wmv3_decoder"
1703 zerocodec_decoder_deps="zlib"
1704 zlib_decoder_deps="zlib"
1705 zlib_encoder_deps="zlib"
1706 zmbv_decoder_deps="zlib"
1707 zmbv_encoder_deps="zlib"
1708
1709 # hardware accelerators
1710 dxva2_deps="dxva2api_h"
1711 vaapi_deps="va_va_h"
1712 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1713 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1714 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1715
1716 h263_vaapi_hwaccel_deps="vaapi"
1717 h263_vaapi_hwaccel_select="h263_decoder"
1718 h263_vdpau_hwaccel_deps="vdpau"
1719 h263_vdpau_hwaccel_select="h263_decoder"
1720 h264_dxva2_hwaccel_deps="dxva2"
1721 h264_dxva2_hwaccel_select="h264_decoder"
1722 h264_vaapi_hwaccel_deps="vaapi"
1723 h264_vaapi_hwaccel_select="h264_decoder"
1724 h264_vda_hwaccel_deps="vda"
1725 h264_vda_hwaccel_select="h264_decoder"
1726 h264_vdpau_hwaccel_deps="vdpau"
1727 h264_vdpau_hwaccel_select="h264_decoder"
1728 mpeg1_vdpau_hwaccel_deps="vdpau"
1729 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1730 mpeg2_dxva2_hwaccel_deps="dxva2"
1731 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1732 mpeg2_vaapi_hwaccel_deps="vaapi"
1733 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1734 mpeg2_vdpau_hwaccel_deps="vdpau"
1735 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1736 mpeg4_vaapi_hwaccel_deps="vaapi"
1737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1738 mpeg4_vdpau_hwaccel_deps="vdpau"
1739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1740 vc1_dxva2_hwaccel_deps="dxva2"
1741 vc1_dxva2_hwaccel_select="vc1_decoder"
1742 vc1_vaapi_hwaccel_deps="vaapi"
1743 vc1_vaapi_hwaccel_select="vc1_decoder"
1744 vc1_vdpau_hwaccel_deps="vdpau"
1745 vc1_vdpau_hwaccel_select="vc1_decoder"
1746 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1747 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1748 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1749
1750 # parsers
1751 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1752 mpeg4video_parser_select="error_resilience mpegvideo"
1753 mpegvideo_parser_select="error_resilience mpegvideo"
1754 vc1_parser_select="mpegvideo"
1755
1756 # external libraries
1757 libfaac_encoder_deps="libfaac"
1758 libfaac_encoder_select="audio_frame_queue"
1759 libfdk_aac_decoder_deps="libfdk_aac"
1760 libfdk_aac_encoder_deps="libfdk_aac"
1761 libfdk_aac_encoder_select="audio_frame_queue"
1762 libgsm_decoder_deps="libgsm"
1763 libgsm_encoder_deps="libgsm"
1764 libgsm_ms_decoder_deps="libgsm"
1765 libgsm_ms_encoder_deps="libgsm"
1766 libilbc_decoder_deps="libilbc"
1767 libilbc_encoder_deps="libilbc"
1768 libmp3lame_encoder_deps="libmp3lame"
1769 libmp3lame_encoder_select="audio_frame_queue"
1770 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1771 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1772 libopencore_amrnb_encoder_select="audio_frame_queue"
1773 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1774 libopenjpeg_decoder_deps="libopenjpeg"
1775 libopenjpeg_encoder_deps="libopenjpeg"
1776 libopus_decoder_deps="libopus"
1777 libopus_encoder_deps="libopus"
1778 libopus_encoder_select="audio_frame_queue"
1779 libschroedinger_decoder_deps="libschroedinger"
1780 libschroedinger_encoder_deps="libschroedinger"
1781 libspeex_decoder_deps="libspeex"
1782 libspeex_encoder_deps="libspeex"
1783 libspeex_encoder_select="audio_frame_queue"
1784 libtheora_encoder_deps="libtheora"
1785 libvo_aacenc_encoder_deps="libvo_aacenc"
1786 libvo_aacenc_encoder_select="audio_frame_queue"
1787 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1788 libvorbis_encoder_deps="libvorbis"
1789 libvorbis_encoder_select="audio_frame_queue"
1790 libvpx_vp8_decoder_deps="libvpx"
1791 libvpx_vp8_encoder_deps="libvpx"
1792 libvpx_vp9_decoder_deps="libvpx"
1793 libvpx_vp9_encoder_deps="libvpx"
1794 libwavpack_encoder_deps="libwavpack"
1795 libx264_encoder_deps="libx264"
1796 libxavs_encoder_deps="libxavs"
1797 libxvid_encoder_deps="libxvid"
1798
1799 # demuxers / muxers
1800 ac3_demuxer_select="ac3_parser"
1801 asf_demuxer_select="riffdec"
1802 asf_muxer_select="riffenc"
1803 asf_stream_muxer_select="asf_muxer"
1804 avi_demuxer_select="riffdec"
1805 avi_muxer_select="riffenc"
1806 avisynth_demuxer_deps="avisynth"
1807 avisynth_demuxer_select="riffdec"
1808 caf_demuxer_select="riffdec"
1809 dirac_demuxer_select="dirac_parser"
1810 dxa_demuxer_select="riffdec"
1811 eac3_demuxer_select="ac3_parser"
1812 flac_demuxer_select="flac_parser"
1813 hls_muxer_select="mpegts_muxer"
1814 ipod_muxer_select="mov_muxer"
1815 ismv_muxer_select="mov_muxer"
1816 matroska_audio_muxer_select="matroska_muxer"
1817 matroska_demuxer_select="riffdec"
1818 matroska_demuxer_suggest="bzlib lzo zlib"
1819 matroska_muxer_select="riffenc"
1820 mmf_muxer_select="riffenc"
1821 mov_demuxer_select="riffdec"
1822 mov_demuxer_suggest="zlib"
1823 mov_muxer_select="riffenc rtpenc_chain"
1824 mp3_demuxer_select="mpegaudio_parser"
1825 mp4_muxer_select="mov_muxer"
1826 mpegts_muxer_select="adts_muxer latm_muxer"
1827 mpegtsraw_demuxer_select="mpegts_demuxer"
1828 mxf_d10_muxer_select="mxf_muxer"
1829 nut_muxer_select="riffenc"
1830 nuv_demuxer_select="riffdec"
1831 ogg_demuxer_select="golomb"
1832 psp_muxer_select="mov_muxer"
1833 rtp_demuxer_select="sdp_demuxer"
1834 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1835 rtsp_demuxer_select="http_protocol rtpdec"
1836 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1837 sap_demuxer_select="sdp_demuxer"
1838 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1839 sdp_demuxer_select="rtpdec"
1840 smoothstreaming_muxer_select="ismv_muxer"
1841 spdif_muxer_select="aac_parser"
1842 tak_demuxer_select="tak_parser"
1843 tg2_muxer_select="mov_muxer"
1844 tgp_muxer_select="mov_muxer"
1845 w64_demuxer_select="wav_demuxer"
1846 wav_demuxer_select="riffdec"
1847 wav_muxer_select="riffenc"
1848 webm_muxer_select="riffenc"
1849 wtv_demuxer_select="riffdec"
1850 xmv_demuxer_select="riffdec"
1851 xwma_demuxer_select="riffdec"
1852
1853 # indevs / outdevs
1854 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1855 alsa_outdev_deps="alsa_asoundlib_h"
1856 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1857 dv1394_indev_deps="dv1394"
1858 dv1394_indev_select="dv_demuxer"
1859 fbdev_indev_deps="linux_fb_h"
1860 jack_indev_deps="jack_jack_h pthreads"
1861 libcdio_indev_deps="libcdio"
1862 libdc1394_indev_deps="libdc1394"
1863 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1864 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1865 pulse_indev_deps="libpulse"
1866 sndio_indev_deps="sndio_h"
1867 sndio_outdev_deps="sndio_h"
1868 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1869 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1870 vfwcap_indev_extralibs="-lavicap32"
1871 x11grab_indev_deps="x11grab XShmCreateImage"
1872
1873 # protocols
1874 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1875 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1876 ffrtmpcrypt_protocol_select="tcp_protocol"
1877 ffrtmphttp_protocol_deps="!librtmp_protocol"
1878 ffrtmphttp_protocol_select="http_protocol"
1879 gopher_protocol_select="network"
1880 httpproxy_protocol_select="tcp_protocol"
1881 http_protocol_select="tcp_protocol"
1882 https_protocol_select="tls_protocol"
1883 librtmp_protocol_deps="librtmp"
1884 librtmpe_protocol_deps="librtmp"
1885 librtmps_protocol_deps="librtmp"
1886 librtmpt_protocol_deps="librtmp"
1887 librtmpte_protocol_deps="librtmp"
1888 mmsh_protocol_select="http_protocol"
1889 mmst_protocol_select="network"
1890 rtmp_protocol_deps="!librtmp_protocol"
1891 rtmp_protocol_select="tcp_protocol"
1892 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1893 rtmps_protocol_deps="!librtmp_protocol"
1894 rtmps_protocol_select="tls_protocol"
1895 rtmpt_protocol_select="ffrtmphttp_protocol"
1896 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1897 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1898 rtp_protocol_select="udp_protocol"
1899 sctp_protocol_deps="struct_sctp_event_subscribe"
1900 sctp_protocol_select="network"
1901 srtp_protocol_select="rtp_protocol"
1902 tcp_protocol_select="network"
1903 tls_protocol_deps_any="openssl gnutls"
1904 tls_protocol_select="tcp_protocol"
1905 udp_protocol_select="network"
1906 unix_protocol_deps="sys_un_h"
1907 unix_protocol_select="network"
1908
1909 # filters
1910 blackframe_filter_deps="gpl"
1911 boxblur_filter_deps="gpl"
1912 cropdetect_filter_deps="gpl"
1913 delogo_filter_deps="gpl"
1914 drawtext_filter_deps="libfreetype"
1915 frei0r_filter_deps="frei0r dlopen strtok_r"
1916 frei0r_filter_extralibs='$ldl'
1917 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1918 frei0r_src_filter_extralibs='$ldl'
1919 hqdn3d_filter_deps="gpl"
1920 interlace_filter_deps="gpl"
1921 resample_filter_deps="avresample"
1922 ocv_filter_deps="libopencv"
1923 scale_filter_deps="swscale"
1924 yadif_filter_deps="gpl"
1925
1926 # libraries
1927 avcodec_deps="avutil"
1928 avdevice_deps="avutil avcodec avformat"
1929 avfilter_deps="avutil"
1930 avformat_deps="avutil avcodec"
1931 avresample_deps="avutil"
1932 swscale_deps="avutil"
1933
1934 # programs
1935 avconv_deps="avcodec avfilter avformat avresample swscale"
1936 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1937                fps_filter null_filter resample_filter scale_filter
1938                setpts_filter trim_filter"
1939 avplay_deps="avcodec avformat avresample swscale sdl"
1940 avplay_select="rdft"
1941 avprobe_deps="avcodec avformat"
1942 avserver_deps="avformat fork !shared"
1943 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1944 avserver_extralibs='$ldl'
1945
1946 doc_deps="texi2html"
1947
1948 # default parameters
1949
1950 logfile="config.log"
1951
1952 # installation paths
1953 prefix_default="/usr/local"
1954 bindir_default='${prefix}/bin'
1955 datadir_default='${prefix}/share/avconv'
1956 incdir_default='${prefix}/include'
1957 libdir_default='${prefix}/lib'
1958 mandir_default='${prefix}/share/man'
1959 shlibdir_default="$libdir_default"
1960
1961 # toolchain
1962 ar_default="ar"
1963 cc_default="gcc"
1964 host_cc_default="gcc"
1965 cp_f="cp -f"
1966 ln_s="ln -s -f"
1967 nm_default="nm -g"
1968 objformat="elf"
1969 pkg_config_default=pkg-config
1970 ranlib="ranlib"
1971 yasmexe="yasm"
1972
1973 nogas=":"
1974
1975 # machine
1976 arch_default=$(uname -m)
1977 cpu="generic"
1978
1979 # OS
1980 target_os_default=$(tolower $(uname -s))
1981 host_os=$target_os_default
1982
1983 # configurable options
1984 enable $LIBRARY_LIST $PROGRAM_LIST
1985
1986 enable asm
1987 enable debug
1988 enable doc
1989 enable optimizations
1990 enable safe_bitstream_reader
1991 enable static
1992 enable swscale_alpha
1993
1994 # By default, enable only those hwaccels that have no external dependencies.
1995 enable dxva2 vdpau
1996
1997 # build settings
1998 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1999 LIBPREF="lib"
2000 LIBSUF=".a"
2001 FULLNAME='$(NAME)$(BUILDSUF)'
2002 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2003 SLIBPREF="lib"
2004 SLIBSUF=".so"
2005 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2006 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2007 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2008 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2009 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2010 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2011
2012 asflags_filter=echo
2013 cflags_filter=echo
2014 ldflags_filter=echo
2015
2016 AS_C='-c'
2017 AS_O='-o $@'
2018 CC_C='-c'
2019 CC_E='-E -o $@'
2020 CC_O='-o $@'
2021 LD_O='-o $@'
2022 LD_LIB='-l%'
2023 LD_PATH='-L'
2024 HOSTCC_C='-c'
2025 HOSTCC_O='-o $@'
2026 HOSTLD_O='-o $@'
2027
2028 host_cflags='-O3 -g'
2029 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2030 host_libs='-lm'
2031 host_cflags_filter=echo
2032 host_ldflags_filter=echo
2033
2034 target_path='$(CURDIR)'
2035
2036 # since the object filename is not given with the -MM flag, the compiler
2037 # is only able to print the basename, and we must add the path ourselves
2038 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2039 DEPFLAGS='-MM'
2040
2041 # find source path
2042 if test -f configure; then
2043     source_path=.
2044 else
2045     source_path=$(cd $(dirname "$0"); pwd)
2046     echo "$source_path" | grep -q '[[:blank:]]' &&
2047         die "Out of tree builds are impossible with whitespace in source path."
2048     test -e "$source_path/config.h" &&
2049         die "Out of tree builds are impossible with config.h in source dir."
2050 fi
2051
2052 for v in "$@"; do
2053     r=${v#*=}
2054     l=${v%"$r"}
2055     r=$(sh_quote "$r")
2056     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2057 done
2058
2059 find_things(){
2060     thing=$1
2061     pattern=$2
2062     file=$source_path/$3
2063     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2064 }
2065
2066 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2067 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2068 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2069 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2070 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2071 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2072 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2073 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2074 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2075 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2076 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2077
2078 ALL_COMPONENTS="
2079     $BSF_LIST
2080     $DECODER_LIST
2081     $DEMUXER_LIST
2082     $ENCODER_LIST
2083     $FILTER_LIST
2084     $HWACCEL_LIST
2085     $INDEV_LIST
2086     $MUXER_LIST
2087     $OUTDEV_LIST
2088     $PARSER_LIST
2089     $PROTOCOL_LIST
2090 "
2091
2092 for n in $COMPONENT_LIST; do
2093     v=$(toupper ${n%s})_LIST
2094     eval enable \$$v
2095     eval ${n}_if_any="\$$v"
2096 done
2097
2098 enable $ARCH_EXT_LIST
2099
2100 die_unknown(){
2101     echo "Unknown option \"$1\"."
2102     echo "See $0 --help for available options."
2103     exit 1
2104 }
2105
2106 print_3_columns() {
2107     cat | tr ' ' '\n' | sort | pr -r -3 -t
2108 }
2109
2110 show_list() {
2111     suffix=_$1
2112     shift
2113     echo $* | sed s/$suffix//g | print_3_columns
2114     exit 0
2115 }
2116
2117 rand_list(){
2118     IFS=', '
2119     set -- $*
2120     unset IFS
2121     for thing; do
2122         comp=${thing%:*}
2123         prob=${thing#$comp}
2124         prob=${prob#:}
2125         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2126         echo "prob ${prob:-0.5}"
2127         printf '%s\n' $comp
2128     done
2129 }
2130
2131 do_random(){
2132     action=$1
2133     shift
2134     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2135     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2136 }
2137
2138 for opt do
2139     optval="${opt#*=}"
2140     case "$opt" in
2141         --extra-ldflags=*)
2142             add_ldflags $optval
2143         ;;
2144         --extra-libs=*)
2145             add_extralibs $optval
2146         ;;
2147         --disable-devices)
2148             disable $INDEV_LIST $OUTDEV_LIST
2149         ;;
2150         --enable-debug=*)
2151             debuglevel="$optval"
2152         ;;
2153         --disable-programs)
2154             disable $PROGRAM_LIST
2155         ;;
2156         --disable-everything)
2157             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2158         ;;
2159         --disable-all)
2160             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2161             disable $LIBRARY_LIST $PROGRAM_LIST doc
2162         ;;
2163         --enable-random|--disable-random)
2164             action=${opt%%-random}
2165             do_random ${action#--} $COMPONENT_LIST
2166         ;;
2167         --enable-random=*|--disable-random=*)
2168             action=${opt%%-random=*}
2169             do_random ${action#--} $optval
2170         ;;
2171         --enable-*=*|--disable-*=*)
2172             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2173             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2174             eval list=\$$(toupper $thing)_LIST
2175             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2176             $action $(filter "$name" $list)
2177         ;;
2178         --enable-?*|--disable-?*)
2179             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2180             if is_in $option $COMPONENT_LIST; then
2181                 test $action = disable && action=unset
2182                 eval $action \$$(toupper ${option%s})_LIST
2183             elif is_in $option $CMDLINE_SELECT; then
2184                 $action $option
2185             else
2186                 die_unknown $opt
2187             fi
2188         ;;
2189         --list-*)
2190             NAME="${opt#--list-}"
2191             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2192             NAME=${NAME%s}
2193             eval show_list $NAME \$$(toupper $NAME)_LIST
2194         ;;
2195         --help|-h) show_help
2196         ;;
2197         *)
2198             optname="${opt%%=*}"
2199             optname="${optname#--}"
2200             optname=$(echo "$optname" | sed 's/-/_/g')
2201             if is_in $optname $CMDLINE_SET; then
2202                 eval $optname='$optval'
2203             elif is_in $optname $CMDLINE_APPEND; then
2204                 append $optname "$optval"
2205             else
2206                 die_unknown $opt
2207             fi
2208         ;;
2209     esac
2210 done
2211
2212 disabled logging && logfile=/dev/null
2213
2214 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2215 set >> $logfile
2216
2217 test -n "$cross_prefix" && enable cross_compile
2218
2219 if enabled cross_compile; then
2220     test -n "$arch" && test -n "$target_os" ||
2221         die "Must specify target arch and OS when cross-compiling"
2222 fi
2223
2224 ar_default="${cross_prefix}${ar_default}"
2225 cc_default="${cross_prefix}${cc_default}"
2226 nm_default="${cross_prefix}${nm_default}"
2227 pkg_config_default="${cross_prefix}${pkg_config_default}"
2228 ranlib="${cross_prefix}${ranlib}"
2229
2230 sysinclude_default="${sysroot}/usr/include"
2231
2232 case "$toolchain" in
2233     clang-asan)
2234         cc_default="clang"
2235         add_cflags  -fsanitize=address
2236         add_ldflags -fsanitize=address
2237     ;;
2238     clang-tsan)
2239         cc_default="clang"
2240         add_cflags  -fsanitize=thread -pie
2241         add_ldflags -fsanitize=thread -pie
2242     ;;
2243     gcc-asan)
2244         cc_default="gcc"
2245         add_cflags  -fsanitize=address
2246         add_ldflags -fsanitize=address
2247     ;;
2248     gcc-tsan)
2249         cc_default="gcc"
2250         add_cflags  -fsanitize=thread -pie -fPIC
2251         add_ldflags -fsanitize=thread -pie -fPIC
2252     ;;
2253     valgrind-massif)
2254         target_exec_default="valgrind"
2255         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2256     ;;
2257     valgrind-memcheck)
2258         target_exec_default="valgrind"
2259         target_exec_args="--track-origins=yes --leak-check=full"
2260     ;;
2261     msvc)
2262         cc_default="c99wrap cl"
2263         ld_default="c99wrap link"
2264         nm_default="dumpbin -symbols"
2265         ar_default="lib"
2266         target_os_default="win32"
2267     ;;
2268     icl)
2269         cc_default="c99wrap -noconv icl"
2270         ld_default="c99wrap xilink"
2271         nm_default="dumpbin -symbols"
2272         ar_default="xilib"
2273         target_os_default="win32"
2274     ;;
2275     gcov)
2276         add_cflags  -fprofile-arcs -ftest-coverage
2277         add_ldflags -fprofile-arcs -ftest-coverage
2278     ;;
2279     ?*)
2280         die "Unknown toolchain $toolchain"
2281     ;;
2282 esac
2283
2284 set_default arch cc pkg_config sysinclude target_exec target_os
2285 enabled cross_compile || host_cc_default=$cc
2286 set_default host_cc
2287
2288 if ! $pkg_config --version >/dev/null 2>&1; then
2289     warn "$pkg_config not found, library detection may fail."
2290     pkg_config=false
2291 fi
2292
2293 exesuf() {
2294     case $1 in
2295         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2296     esac
2297 }
2298
2299 EXESUF=$(exesuf $target_os)
2300 HOSTEXESUF=$(exesuf $host_os)
2301
2302 # set temporary file name
2303 : ${TMPDIR:=$TEMPDIR}
2304 : ${TMPDIR:=$TMP}
2305 : ${TMPDIR:=/tmp}
2306
2307 if ! check_cmd mktemp -u XXXXXX; then
2308     # simple replacement for missing mktemp
2309     # NOT SAFE FOR GENERAL USE
2310     mktemp(){
2311         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2312     }
2313 fi
2314
2315 tmpfile(){
2316     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2317         (set -C; exec > $tmp) 2>/dev/null ||
2318         die "Unable to create temporary file in $TMPDIR."
2319     append TMPFILES $tmp
2320     eval $1=$tmp
2321 }
2322
2323 trap 'rm -f -- $TMPFILES' EXIT
2324
2325 tmpfile TMPASM .asm
2326 tmpfile TMPC   .c
2327 tmpfile TMPE   $EXESUF
2328 tmpfile TMPH   .h
2329 tmpfile TMPO   .o
2330 tmpfile TMPS   .S
2331 tmpfile TMPSH  .sh
2332 tmpfile TMPV   .ver
2333
2334 unset -f mktemp
2335
2336 chmod +x $TMPE
2337
2338 # make sure we can execute files in $TMPDIR
2339 cat > $TMPSH 2>> $logfile <<EOF
2340 #! /bin/sh
2341 EOF
2342 chmod +x $TMPSH >> $logfile 2>&1
2343 if ! $TMPSH >> $logfile 2>&1; then
2344     cat <<EOF
2345 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2346 variable to another directory and make sure that it is not mounted noexec.
2347 EOF
2348     die "Sanity test failed."
2349 fi
2350
2351 ccc_flags(){
2352     for flag; do
2353         case $flag in
2354             -std=c99)           echo -c99                       ;;
2355             -mcpu=*)            echo -arch ${flag#*=}           ;;
2356             -mieee)             echo -ieee                      ;;
2357             -O*|-fast)          echo $flag                      ;;
2358             -fno-math-errno)    echo -assume nomath_errno       ;;
2359             -g)                 echo -g3                        ;;
2360             -Wall)              echo -msg_enable level2         ;;
2361             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2362             -Wl,*)              echo $flag                      ;;
2363             -f*|-W*)                                            ;;
2364             *)                  echo $flag                      ;;
2365         esac
2366    done
2367 }
2368
2369 msvc_common_flags(){
2370     for flag; do
2371         case $flag in
2372             # In addition to specifying certain flags under the compiler
2373             # specific filters, they must be specified here as well or else the
2374             # generic catch all at the bottom will print the original flag.
2375             -Wall)                ;;
2376             -std=c99)             ;;
2377             # Common flags
2378             -fomit-frame-pointer) ;;
2379             -g)                   echo -Z7 ;;
2380             -fno-math-errno)      ;;
2381             -fno-common)          ;;
2382             -fno-signed-zeros)    ;;
2383             -fPIC)                ;;
2384             -mthumb)              ;;
2385             -march=*)             ;;
2386             -lz)                  echo zlib.lib ;;
2387             -lavifil32)           echo vfw32.lib ;;
2388             -lavicap32)           echo vfw32.lib user32.lib ;;
2389             -l*)                  echo ${flag#-l}.lib ;;
2390             *)                    echo $flag ;;
2391         esac
2392     done
2393 }
2394
2395 msvc_flags(){
2396     msvc_common_flags "$@"
2397     for flag; do
2398         case $flag in
2399             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2400                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2401                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2402                                        -wd4996 -wd4273 ;;
2403         esac
2404     done
2405 }
2406
2407 icl_flags(){
2408     msvc_common_flags "$@"
2409     for flag; do
2410         case $flag in
2411             # Despite what Intel's documentation says -Wall, which is supported
2412             # on Windows, does enable remarks so disable them here.
2413             -Wall)                echo $flag -Qdiag-disable:remark ;;
2414             -std=c99)             echo -Qstd=c99 ;;
2415         esac
2416     done
2417 }
2418
2419 pgi_flags(){
2420     for flag; do
2421         case $flag in
2422             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2423             -fomit-frame-pointer) echo -Mnoframe ;;
2424             -g)                   echo -gopt ;;
2425             *)                    echo $flag ;;
2426         esac
2427     done
2428 }
2429
2430 suncc_flags(){
2431     for flag; do
2432         case $flag in
2433             -march=*|-mcpu=*)
2434                 case "${flag#*=}" in
2435                     native)                   echo -xtarget=native       ;;
2436                     v9|niagara)               echo -xarch=sparc          ;;
2437                     ultrasparc)               echo -xarch=sparcvis       ;;
2438                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2439                     i586|pentium)             echo -xchip=pentium        ;;
2440                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2441                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2442                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2443                     pentium4*)          echo -xtarget=pentium4           ;;
2444                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2445                     *-sse3)             echo -xarch=sse3                 ;;
2446                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2447                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2448                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2449                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2450                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2451                     k8|opteron|athlon64|athlon-fx)
2452                                                echo -xarch=sse2a         ;;
2453                     athlon*)                   echo -xarch=pentium_proa  ;;
2454                 esac
2455                 ;;
2456             -std=c99)             echo -xc99              ;;
2457             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2458             -fPIC)                echo -KPIC -xcode=pic32 ;;
2459             -W*,*)                echo $flag              ;;
2460             -f*-*|-W*|-mimpure-text)                      ;;
2461             -shared)              echo -G                 ;;
2462             *)                    echo $flag              ;;
2463         esac
2464     done
2465 }
2466
2467 tms470_flags(){
2468     for flag; do
2469         case $flag in
2470             -march=*|-mcpu=*)
2471                 case "${flag#*=}" in
2472                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2473                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2474                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2475                     armv6*|arm11*)          echo -mv=6   ;;
2476                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2477                                             echo -mv=5e  ;;
2478                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2479                 esac
2480                 ;;
2481             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2482             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2483             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2484             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2485             -msoft-float)   echo --float_support=vfplib       ;;
2486             -O[0-3]|-mf=*)  echo $flag                        ;;
2487             -g)             echo -g -mn                       ;;
2488             -pds=*)         echo $flag                        ;;
2489             -D*|-I*)        echo $flag                        ;;
2490             --gcc|--abi=*)  echo $flag                        ;;
2491             -me)            echo $flag                        ;;
2492         esac
2493     done
2494 }
2495
2496 probe_cc(){
2497     pfx=$1
2498     _cc=$2
2499
2500     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2501     unset _ld_o _ldflags _ld_lib _ld_path
2502     unset _depflags _DEPCMD _DEPFLAGS
2503     _flags_filter=echo
2504
2505     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2506         _type=llvm_gcc
2507         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2508         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2509         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2510         _cflags_speed='-O3'
2511         _cflags_size='-Os'
2512     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2513         _type=gcc
2514         gcc_version=$($_cc --version | head -n1)
2515         gcc_basever=$($_cc -dumpversion)
2516         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2517         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2518         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2519         if ! $_cc -dumpversion | grep -q '^2\.'; then
2520             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2521         fi
2522         _cflags_speed='-O3'
2523         _cflags_size='-Os'
2524     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2525         _type=icc
2526         _ident=$($_cc --version | head -n1)
2527         _depflags='-MMD'
2528         _cflags_speed='-O3'
2529         _cflags_size='-Os'
2530         _cflags_noopt='-O1'
2531     elif $_cc -v 2>&1 | grep -q xlc; then
2532         _type=xlc
2533         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2534         _cflags_speed='-O5'
2535         _cflags_size='-O5 -qcompact'
2536     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2537         _type=ccc
2538         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2539         _DEPFLAGS='-M'
2540         _cflags_speed='-fast'
2541         _cflags_size='-O1'
2542         _flags_filter=ccc_flags
2543     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2544         test -d "$sysroot" || die "No valid sysroot specified."
2545         _type=armcc
2546         _ident=$($_cc --vsn | head -n1)
2547         armcc_conf="$PWD/armcc.conf"
2548         $_cc --arm_linux_configure                 \
2549              --arm_linux_config_file="$armcc_conf" \
2550              --configure_sysroot="$sysroot"        \
2551              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2552              die "Error creating armcc configuration file."
2553         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2554         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2555         as_default="${cross_prefix}gcc"
2556         _depflags='-MMD'
2557         _cflags_speed='-O3'
2558         _cflags_size='-Os'
2559     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2560         _type=tms470
2561         _ident=$($_cc -version | head -n1 | tr -s ' ')
2562         _flags='--gcc --abi=eabi -me'
2563         _cc_e='-ppl -fe=$@'
2564         _cc_o='-fe=$@'
2565         _depflags='-ppa -ppd=$(@:.o=.d)'
2566         _cflags_speed='-O3 -mf=5'
2567         _cflags_size='-O3 -mf=2'
2568         _flags_filter=tms470_flags
2569     elif $_cc -v 2>&1 | grep -q clang; then
2570         _type=clang
2571         _ident=$($_cc --version | head -n1)
2572         _depflags='-MMD'
2573         _cflags_speed='-O3'
2574         _cflags_size='-Os'
2575     elif $_cc -V 2>&1 | grep -q Sun; then
2576         _type=suncc
2577         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2578         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2579         _DEPFLAGS='-xM1 -xc99'
2580         _ldflags='-std=c99'
2581         _cflags_speed='-O5'
2582         _cflags_size='-O5 -xspace'
2583         _flags_filter=suncc_flags
2584     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2585         _type=pathscale
2586         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2587         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2588         _cflags_speed='-O2'
2589         _cflags_size='-Os'
2590         _flags_filter='filter_out -Wdisabled-optimization'
2591     elif $_cc -v 2>&1 | grep -q Open64; then
2592         _type=open64
2593         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2594         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2595         _cflags_speed='-O2'
2596         _cflags_size='-Os'
2597         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2598     elif $_cc -V 2>&1 | grep -q Portland; then
2599         _type=pgi
2600         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2601         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2602         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2603         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2604         _cflags_noopt="-O1"
2605         _flags_filter=pgi_flags
2606     elif $_cc 2>&1 | grep -q Microsoft; then
2607         _type=msvc
2608         _ident=$($cc 2>&1 | head -n1)
2609         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2610         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2611         _cflags_speed="-O2"
2612         _cflags_size="-O1"
2613         # Nonstandard output options, to avoid msys path conversion issues.
2614         # Relies on wrapper to remap it.
2615         if $_cc 2>&1 | grep -q Linker; then
2616             _ld_o='-out $@'
2617         else
2618             _ld_o='-Fe$@'
2619         fi
2620         _cc_o='-Fo $@'
2621         _cc_e='-P -Fi $@'
2622         _flags_filter=msvc_flags
2623         _ld_lib='lib%.a'
2624         _ld_path='-libpath:'
2625         _flags='-nologo'
2626         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2627         if [ $pfx = hostcc ]; then
2628             append _cflags -Dsnprintf=_snprintf
2629         fi
2630     elif $_cc 2>&1 | grep -q Intel; then
2631         _type=icl
2632         _ident=$($cc 2>&1 | head -n1)
2633         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2634         # Not only is O3 broken on 13.x+ but it is slower on all previous
2635         # versions (tested) as well.
2636         _cflags_speed="-O2"
2637         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2638         # Nonstandard output options, to avoid msys path conversion issues.
2639         # Relies on wrapper to remap it.
2640         if $_cc 2>&1 | grep -q Linker; then
2641             _ld_o='-out $@'
2642         else
2643             _ld_o='-Fe$@'
2644         fi
2645         _cc_o='-Fo $@'
2646         _cc_e='-P'
2647         _flags_filter=icl_flags
2648         _ld_lib='lib%.a'
2649         _ld_path='-libpath:'
2650         # -Qdiag-error to make icl error when seeing certain unknown arguments
2651         _flags='-nologo -Qdiag-error:4044,10157'
2652         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2653         # with MSVC which enables it by default.
2654         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2655         if [ $pfx = hostcc ]; then
2656             append _cflags -Dsnprintf=_snprintf
2657         fi
2658     fi
2659
2660     eval ${pfx}_type=\$_type
2661     eval ${pfx}_ident=\$_ident
2662 }
2663
2664 set_ccvars(){
2665     eval ${1}_C=\${_cc_c-\${${1}_C}}
2666     eval ${1}_E=\${_cc_e-\${${1}_E}}
2667     eval ${1}_O=\${_cc_o-\${${1}_O}}
2668
2669     if [ -n "$_depflags" ]; then
2670         eval ${1}_DEPFLAGS=\$_depflags
2671     else
2672         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2673         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2674         eval DEP${1}FLAGS=\$_flags
2675     fi
2676 }
2677
2678 probe_cc cc "$cc"
2679 cflags_filter=$_flags_filter
2680 cflags_speed=$_cflags_speed
2681 cflags_size=$_cflags_size
2682 cflags_noopt=$_cflags_noopt
2683 add_cflags $_flags $_cflags
2684 cc_ldflags=$_ldflags
2685 set_ccvars CC
2686
2687 probe_cc hostcc "$host_cc"
2688 host_cflags_filter=$_flags_filter
2689 add_host_cflags  $_flags $_cflags
2690 set_ccvars HOSTCC
2691
2692 test -n "$cc_type" && enable $cc_type ||
2693     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2694
2695 : ${as_default:=$cc}
2696 : ${dep_cc_default:=$cc}
2697 : ${ld_default:=$cc}
2698 : ${host_ld_default:=$host_cc}
2699 set_default ar as dep_cc ld host_ld
2700
2701 probe_cc as "$as"
2702 asflags_filter=$_flags_filter
2703 add_asflags $_flags $_cflags
2704 set_ccvars AS
2705
2706 probe_cc ld "$ld"
2707 ldflags_filter=$_flags_filter
2708 add_ldflags $_flags $_ldflags
2709 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2710 LD_O=${_ld_o-$LD_O}
2711 LD_LIB=${_ld_lib-$LD_LIB}
2712 LD_PATH=${_ld_path-$LD_PATH}
2713
2714 probe_cc hostld "$host_ld"
2715 host_ldflags_filter=$_flags_filter
2716 add_host_ldflags $_flags $_ldflags
2717 HOSTLD_O=${_ld_o-$HOSTLD_O}
2718
2719 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2720     probe_cc depcc "$dep_cc"
2721     CCDEP=${_DEPCMD:-$DEPCMD}
2722     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2723     DEPCCFLAGS=$_flags
2724 fi
2725
2726 if $ar 2>&1 | grep -q Microsoft; then
2727     arflags="-nologo"
2728     ar_o='-out:$@'
2729 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2730     arflags="rq"
2731     ar_o='$@'
2732 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2733     arflags='-Xany -r -c'
2734     ar_o='$@'
2735 else
2736     arflags="rc"
2737     ar_o='$@'
2738 fi
2739
2740 add_cflags $extra_cflags
2741 add_asflags $extra_cflags
2742
2743 if test -n "$sysroot"; then
2744     case "$cc_type" in
2745         gcc|llvm_gcc|clang)
2746             add_cppflags --sysroot="$sysroot"
2747             add_ldflags --sysroot="$sysroot"
2748         ;;
2749         tms470)
2750             add_cppflags -I"$sysinclude"
2751             add_ldflags  --sysroot="$sysroot"
2752         ;;
2753     esac
2754 fi
2755
2756 if test "$cpu" = host; then
2757     enabled cross_compile &&
2758         die "--cpu=host makes no sense when cross-compiling."
2759
2760     case "$cc_type" in
2761         gcc|llvm_gcc)
2762             check_native(){
2763                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2764                 sed -n "/cc1.*$1=/{
2765                             s/.*$1=\\([^ ]*\\).*/\\1/
2766                             p
2767                             q
2768                         }" $TMPE
2769             }
2770             cpu=$(check_native -march || check_native -mcpu)
2771         ;;
2772     esac
2773
2774     test "${cpu:-host}" = host &&
2775         die "--cpu=host not supported with compiler $cc"
2776 fi
2777
2778 # Deal with common $arch aliases
2779 case "$arch" in
2780     aarch64|arm64)
2781         arch="aarch64"
2782     ;;
2783     arm*)
2784         arch="arm"
2785     ;;
2786     mips*|IP*)
2787         arch="mips"
2788     ;;
2789     parisc*|hppa*)
2790         arch="parisc"
2791     ;;
2792     "Power Macintosh"|ppc*|powerpc*)
2793         arch="ppc"
2794     ;;
2795     s390|s390x)
2796         arch="s390"
2797     ;;
2798     sh4|sh)
2799         arch="sh4"
2800     ;;
2801     sun4u|sparc*)
2802         arch="sparc"
2803     ;;
2804     tilegx|tile-gx)
2805         arch="tilegx"
2806     ;;
2807     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2808         arch="x86"
2809     ;;
2810 esac
2811
2812 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2813 enable $arch
2814
2815 # Add processor-specific flags
2816 if enabled aarch64; then
2817
2818     case $cpu in
2819         armv*)
2820             cpuflags="-march=$cpu"
2821         ;;
2822         *)
2823             cpuflags="-mcpu=$cpu"
2824         ;;
2825     esac
2826
2827 elif enabled alpha; then
2828
2829     cpuflags="-mcpu=$cpu"
2830
2831 elif enabled arm; then
2832
2833     check_arm_arch() {
2834         check_cpp_condition stddef.h \
2835             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2836             $cpuflags
2837     }
2838
2839     probe_arm_arch() {
2840         if   check_arm_arch 4;        then echo armv4;
2841         elif check_arm_arch 4T;       then echo armv4t;
2842         elif check_arm_arch 5;        then echo armv5;
2843         elif check_arm_arch 5E;       then echo armv5e;
2844         elif check_arm_arch 5T;       then echo armv5t;
2845         elif check_arm_arch 5TE;      then echo armv5te;
2846         elif check_arm_arch 5TEJ;     then echo armv5te;
2847         elif check_arm_arch 6;        then echo armv6;
2848         elif check_arm_arch 6J;       then echo armv6j;
2849         elif check_arm_arch 6K;       then echo armv6k;
2850         elif check_arm_arch 6Z;       then echo armv6z;
2851         elif check_arm_arch 6ZK;      then echo armv6zk;
2852         elif check_arm_arch 6T2;      then echo armv6t2;
2853         elif check_arm_arch 7;        then echo armv7;
2854         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2855         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2856         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2857         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2858         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2859         fi
2860     }
2861
2862     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2863
2864     case $cpu in
2865         armv*)
2866             cpuflags="-march=$cpu"
2867             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2868         ;;
2869         *)
2870             cpuflags="-mcpu=$cpu"
2871             case $cpu in
2872                 cortex-a*)                               subarch=armv7a  ;;
2873                 cortex-r*)                               subarch=armv7r  ;;
2874                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2875                 arm11*)                                  subarch=armv6   ;;
2876                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2877                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2878                 *)                             subarch=$(probe_arm_arch) ;;
2879             esac
2880         ;;
2881     esac
2882
2883     case "$subarch" in
2884         armv5t*)    enable fast_clz                ;;
2885         armv[6-8]*) enable fast_clz fast_unaligned ;;
2886     esac
2887
2888 elif enabled avr32; then
2889
2890     case $cpu in
2891         ap7[02]0[0-2])
2892             subarch="avr32_ap"
2893             cpuflags="-mpart=$cpu"
2894         ;;
2895         ap)
2896             subarch="avr32_ap"
2897             cpuflags="-march=$cpu"
2898         ;;
2899         uc3[ab]*)
2900             subarch="avr32_uc"
2901             cpuflags="-mcpu=$cpu"
2902         ;;
2903         uc)
2904             subarch="avr32_uc"
2905             cpuflags="-march=$cpu"
2906         ;;
2907     esac
2908
2909 elif enabled bfin; then
2910
2911     cpuflags="-mcpu=$cpu"
2912
2913 elif enabled mips; then
2914
2915     cpuflags="-march=$cpu"
2916
2917 elif enabled ppc; then
2918
2919     case $(tolower $cpu) in
2920         601|ppc601|powerpc601)
2921             cpuflags="-mcpu=601"
2922             disable altivec
2923         ;;
2924         603*|ppc603*|powerpc603*)
2925             cpuflags="-mcpu=603"
2926             disable altivec
2927         ;;
2928         604*|ppc604*|powerpc604*)
2929             cpuflags="-mcpu=604"
2930             disable altivec
2931         ;;
2932         g3|75*|ppc75*|powerpc75*)
2933             cpuflags="-mcpu=750"
2934             disable altivec
2935         ;;
2936         g4|745*|ppc745*|powerpc745*)
2937             cpuflags="-mcpu=7450"
2938         ;;
2939         74*|ppc74*|powerpc74*)
2940             cpuflags="-mcpu=7400"
2941         ;;
2942         g5|970|ppc970|powerpc970)
2943             cpuflags="-mcpu=970"
2944         ;;
2945         power[3-7]*)
2946             cpuflags="-mcpu=$cpu"
2947         ;;
2948         cell)
2949             cpuflags="-mcpu=cell"
2950             enable ldbrx
2951         ;;
2952         e500mc)
2953             cpuflags="-mcpu=e500mc"
2954             disable altivec
2955         ;;
2956         e500v2)
2957             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2958             disable altivec
2959         ;;
2960         e500)
2961             cpuflags="-mcpu=8540 -mhard-float"
2962             disable altivec
2963         ;;
2964     esac
2965
2966 elif enabled sparc; then
2967
2968     case $cpu in
2969         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2970             cpuflags="-mcpu=$cpu"
2971             disable vis
2972         ;;
2973         ultrasparc*|niagara[234])
2974             cpuflags="-mcpu=$cpu"
2975         ;;
2976     esac
2977
2978 elif enabled x86; then
2979
2980     case $cpu in
2981         i[345]86|pentium)
2982             cpuflags="-march=$cpu"
2983             disable mmx
2984         ;;
2985         # targets that do NOT support nopl and conditional mov (cmov)
2986         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2987             cpuflags="-march=$cpu"
2988             disable i686
2989         ;;
2990         # targets that do support nopl and conditional mov (cmov)
2991         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2992             cpuflags="-march=$cpu"
2993             enable i686
2994             enable fast_cmov
2995         ;;
2996         # targets that do support conditional mov but on which it's slow
2997         pentium4|pentium4m|prescott|nocona)
2998             cpuflags="-march=$cpu"
2999             enable i686
3000             disable fast_cmov
3001         ;;
3002     esac
3003
3004 fi
3005
3006 if [ "$cpu" != generic ]; then
3007     add_cflags  $cpuflags
3008     add_asflags $cpuflags
3009 fi
3010
3011 # compiler sanity check
3012 check_exec <<EOF
3013 int main(void){ return 0; }
3014 EOF
3015 if test "$?" != 0; then
3016     echo "$cc is unable to create an executable file."
3017     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3018         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3019         echo "Only do this if you know what cross compiling means."
3020     fi
3021     die "C compiler test failed."
3022 fi
3023
3024 add_cppflags -D_ISOC99_SOURCE
3025 check_cflags -std=c99
3026 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3027 #include <stdlib.h>
3028 EOF
3029 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3030 #include <stdlib.h>
3031 EOF
3032
3033 check_host_cflags -std=c99
3034 check_host_cflags -Wall
3035
3036 check_64bit(){
3037     arch32=$1
3038     arch64=$2
3039     expr=$3
3040     check_code cc "" "int test[2*($expr) - 1]" &&
3041         subarch=$arch64 || subarch=$arch32
3042 }
3043
3044 case "$arch" in
3045     aarch64|alpha|ia64)
3046         spic=$shared
3047     ;;
3048     mips)
3049         check_64bit mips mips64 '_MIPS_SIM > 1'
3050         spic=$shared
3051     ;;
3052     parisc)
3053         check_64bit parisc parisc64 'sizeof(void *) > 4'
3054         spic=$shared
3055     ;;
3056     ppc)
3057         check_64bit ppc ppc64 'sizeof(void *) > 4'
3058         spic=$shared
3059     ;;
3060     sparc)
3061         check_64bit sparc sparc64 'sizeof(void *) > 4'
3062         spic=$shared
3063     ;;
3064     x86)
3065         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3066         if test "$subarch" = "x86_64"; then
3067             spic=$shared
3068         fi
3069     ;;
3070 esac
3071
3072 enable $subarch
3073 enabled spic && enable_weak pic
3074
3075 # OS specific
3076 case $target_os in
3077     aix)
3078         SHFLAGS=-shared
3079         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3080         enabled shared && add_ldflags -Wl,-brtl
3081         ;;
3082     haiku)
3083         prefix_default="/boot/common"
3084         network_extralibs="-lnetwork"
3085         host_libs=
3086         ;;
3087     sunos)
3088         SHFLAGS='-shared -Wl,-h,$$(@F)'
3089         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3090         network_extralibs="-lsocket -lnsl"
3091         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3092         # When using suncc to build, the Solaris linker will mark
3093         # an executable with each instruction set encountered by
3094         # the Solaris assembler.  As our libraries contain their own
3095         # guards for processor-specific code, instead suppress
3096         # generation of the HWCAPS ELF section on Solaris x86 only.
3097         enabled_all suncc x86 &&
3098             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3099             add_ldflags -Wl,-M,mapfile
3100         nm_default='nm -P -g'
3101         ;;
3102     netbsd)
3103         disable symver
3104         oss_indev_extralibs="-lossaudio"
3105         oss_outdev_extralibs="-lossaudio"
3106         ;;
3107     openbsd|bitrig)
3108         disable symver
3109         SHFLAGS='-shared'
3110         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3111         SLIB_INSTALL_LINKS=
3112         oss_indev_extralibs="-lossaudio"
3113         oss_outdev_extralibs="-lossaudio"
3114         ;;
3115     dragonfly)
3116         disable symver
3117         ;;
3118     freebsd)
3119         ;;
3120     bsd/os)
3121         add_extralibs -lpoll -lgnugetopt
3122         ;;
3123     darwin)
3124         gas="gas-preprocessor.pl $cc"
3125         enabled ppc && add_asflags -force_cpusubtype_ALL
3126         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3127         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3128         add_ldflags -Wl,-dynamic,-search_paths_first
3129         SLIBSUF=".dylib"
3130         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3131         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3132         objformat="macho"
3133         enabled x86_64 && objformat="macho64"
3134         enabled_any pic shared ||
3135             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3136         ;;
3137     mingw32*)
3138         if test $target_os = "mingw32ce"; then
3139             disable network
3140         else
3141             target_os=mingw32
3142         fi
3143         LIBTARGET=i386
3144         if enabled x86_64; then
3145             LIBTARGET="i386:x86-64"
3146         elif enabled arm; then
3147             LIBTARGET=arm-wince
3148         fi
3149         check_ldflags -Wl,--nxcompat
3150         check_ldflags -Wl,--dynamicbase
3151         shlibdir_default="$bindir_default"
3152         SLIBPREF=""
3153         SLIBSUF=".dll"
3154         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3155         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3156         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3157         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3158         SLIB_INSTALL_LINKS=
3159         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3160         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3161         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3162         objformat="win32"
3163         dlltool="${cross_prefix}dlltool"
3164         ranlib=:
3165         enable dos_paths
3166         ;;
3167     win32|win64)
3168         if enabled shared; then
3169             # Link to the import library instead of the normal static library
3170             # for shared libs.
3171             LD_LIB='%.lib'
3172             # Cannot build shared and static libs at the same time with MSVC.
3173             disable static
3174         fi
3175         shlibdir_default="$bindir_default"
3176         SLIBPREF=""
3177         SLIBSUF=".dll"
3178         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3179         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3180         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3181         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3182         SLIB_INSTALL_LINKS=
3183         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3184         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3185         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3186         objformat="win32"
3187         ranlib=:
3188         enable dos_paths
3189         ;;
3190     cygwin*)
3191         target_os=cygwin
3192         shlibdir_default="$bindir_default"
3193         SLIBPREF="cyg"
3194         SLIBSUF=".dll"
3195         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3196         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3197         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3198         SLIB_INSTALL_LINKS=
3199         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3200         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3201         objformat="win32"
3202         enable dos_paths
3203         ;;
3204     *-dos|freedos|opendos)
3205         network_extralibs="-lsocket"
3206         objformat="coff"
3207         enable dos_paths
3208         add_cppflags -U__STRICT_ANSI__
3209         ;;
3210     linux)
3211         enable dv1394
3212         ;;
3213     irix*)
3214         target_os=irix
3215         ranlib="echo ignoring ranlib"
3216         ;;
3217     os/2*)
3218         ln_s="cp -f"
3219         objformat="aout"
3220         add_cppflags -D_GNU_SOURCE
3221         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3222         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3223         LIBSUF="_s.a"
3224         SLIBPREF=""
3225         SLIBSUF=".dll"
3226         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3227         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3228         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3229             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3230             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3231             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3232             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3233             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3234         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3235             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3236         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3237         enable dos_paths
3238         ;;
3239     gnu/kfreebsd)
3240         add_cppflags -D_BSD_SOURCE
3241         ;;
3242     gnu)
3243         ;;
3244     qnx)
3245         add_cppflags -D_QNX_SOURCE
3246         network_extralibs="-lsocket"
3247         ;;
3248     symbian)
3249         SLIBSUF=".dll"
3250         enable dos_paths
3251         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3252         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3253         add_ldflags -Wl,--target1-abs,--no-undefined \
3254                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3255                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3256         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3257                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3258                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3259         ;;
3260     osf1)
3261         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3262         ;;
3263     minix)
3264         ;;
3265     plan9)
3266         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3267                      -D_REENTRANT_SOURCE        \
3268                      -D_RESEARCH_SOURCE         \
3269                      -DFD_SETSIZE=96            \
3270                      -DHAVE_SOCK_OPTS
3271         add_compat strtod.o strtod=avpriv_strtod
3272         network_extralibs='-lbsd'
3273         exeobjs=compat/plan9/main.o
3274         disable avserver
3275         cp_f='cp'
3276         ;;
3277     none)
3278         ;;
3279     *)
3280         die "Unknown OS '$target_os'."
3281         ;;
3282 esac
3283
3284 # determine libc flavour
3285
3286 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3287 if check_cpp_condition features.h "defined __UCLIBC__"; then
3288     libc_type=uclibc
3289     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3290 elif check_cpp_condition features.h "defined __GLIBC__"; then
3291     libc_type=glibc
3292     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3293 # MinGW headers can be installed on Cygwin, so check for newlib first.
3294 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3295     libc_type=newlib
3296     add_cppflags -U__STRICT_ANSI__
3297 elif check_header _mingw.h; then
3298     libc_type=mingw
3299     check_cpp_condition _mingw.h \
3300         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3301             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3302         die "ERROR: MinGW runtime version must be >= 3.15."
3303     add_cppflags -U__STRICT_ANSI__
3304 elif check_func_headers stdlib.h _get_doserrno; then
3305     libc_type=msvcrt
3306     add_compat strtod.o strtod=avpriv_strtod
3307     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3308                                  _snprintf=avpriv_snprintf  \
3309                                  vsnprintf=avpriv_vsnprintf
3310     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3311     # 0x601 by default unless something else is set by the user.
3312     # This can easily lead to us detecting functions only present
3313     # in such new versions and producing binaries requiring windows 7.0.
3314     # Therefore explicitly set the default to XP unless the user has
3315     # set something else on the command line.
3316     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3317 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3318     libc_type=klibc
3319 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3320     libc_type=bionic
3321     add_compat strtod.o strtod=avpriv_strtod
3322 fi
3323
3324 test -n "$libc_type" && enable $libc_type
3325
3326 # hacks for compiler/libc/os combinations
3327
3328 if enabled_all tms470 glibc; then
3329     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3330     add_cppflags -D__USER_LABEL_PREFIX__=
3331     add_cppflags -D__builtin_memset=memset
3332     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3333     add_cflags   -pds=48    # incompatible redefinition of macro
3334 fi
3335
3336 if enabled_all ccc glibc; then
3337     add_ldflags -Wl,-z,now  # calls to libots crash without this
3338 fi
3339
3340 esc(){
3341     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3342 }
3343
3344 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3345
3346 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3347
3348 set_default $PATHS_LIST
3349 set_default nm
3350
3351 # we need to build at least one lib type
3352 if ! enabled_any static shared; then
3353     cat <<EOF
3354 At least one library type must be built.
3355 Specify --enable-static to build the static libraries or --enable-shared to
3356 build the shared libraries as well. To only build the shared libraries specify
3357 --disable-static in addition to --enable-shared.
3358 EOF
3359     exit 1;
3360 fi
3361
3362 die_license_disabled() {
3363     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3364 }
3365
3366 die_license_disabled gpl libcdio
3367 die_license_disabled gpl libx264
3368 die_license_disabled gpl libxavs
3369 die_license_disabled gpl libxvid
3370 die_license_disabled gpl x11grab
3371
3372 die_license_disabled nonfree libfaac
3373 die_license_disabled nonfree libfdk_aac
3374 die_license_disabled nonfree openssl
3375
3376 die_license_disabled version3 libopencore_amrnb
3377 die_license_disabled version3 libopencore_amrwb
3378 die_license_disabled version3 libvo_aacenc
3379 die_license_disabled version3 libvo_amrwbenc
3380
3381 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3382
3383 disabled optimizations || check_cflags -fomit-frame-pointer
3384
3385 enable_weak_pic() {
3386     disabled pic && return
3387     enable pic
3388     add_cppflags -DPIC
3389     case "$target_os" in
3390     mingw*|cygwin*)
3391         ;;
3392     *)
3393         add_cflags -fPIC
3394         ;;
3395     esac
3396     add_asflags  -fPIC
3397 }
3398
3399 enabled pic && enable_weak_pic
3400
3401 check_cc <<EOF || die "Symbol mangling check failed."
3402 int ff_extern;
3403 EOF
3404 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3405 extern_prefix=${sym%%ff_extern*}
3406
3407 check_cc <<EOF && enable_weak inline_asm
3408 void foo(void) { __asm__ volatile ("" ::); }
3409 EOF
3410
3411 _restrict=
3412 for restrict_keyword in restrict __restrict__ __restrict; do
3413     check_cc <<EOF && _restrict=$restrict_keyword && break
3414 void foo(char * $restrict_keyword p);
3415 EOF
3416 done
3417
3418 check_cc <<EOF && enable pragma_deprecated
3419 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3420 EOF
3421
3422 check_cc <<EOF && enable attribute_packed
3423 struct { int x; } __attribute__((packed)) x;
3424 EOF
3425
3426 check_cc <<EOF && enable attribute_may_alias
3427 union { int x; } __attribute__((may_alias)) x;
3428 EOF
3429
3430 check_cc <<EOF || die "endian test failed"
3431 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3432 EOF
3433 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3434
3435 check_inline_asm inline_asm_labels '"1:\n"'
3436
3437 if enabled alpha; then
3438
3439     check_cflags -mieee
3440
3441 elif enabled arm; then
3442
3443     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3444     enabled thumb && check_cflags -mthumb || check_cflags -marm
3445     nogas=die
3446
3447     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3448         enable vfp_args
3449     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3450         case "${cross_prefix:-$cc}" in
3451             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3452             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3453 __asm__ (".eabi_attribute 28, 1");
3454 int main(void) { return 0; }
3455 EOF
3456         esac
3457         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3458     fi
3459
3460     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3461     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3462     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3463     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3464     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3465     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3466
3467     [ $target_os = linux ] ||
3468         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3469             $ARCH_EXT_LIST_ARM
3470
3471     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3472     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3473
3474     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3475
3476 elif enabled mips; then
3477
3478     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3479
3480 elif enabled parisc; then
3481
3482     if enabled gcc; then
3483         case $($cc -dumpversion) in
3484             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3485         esac
3486     fi
3487
3488 elif enabled ppc; then
3489
3490     enable local_aligned_8 local_aligned_16
3491
3492     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3493     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3494     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3495     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3496
3497     # AltiVec flags: The FSF version of GCC differs from the Apple version
3498     if enabled altivec; then
3499         nogas=warn
3500         check_cflags -maltivec -mabi=altivec &&
3501         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3502         check_cflags -faltivec
3503
3504         # check if our compiler supports Motorola AltiVec C API
3505         check_cc <<EOF || disable altivec
3506 $inc_altivec_h
3507 int main(void) {
3508     vector signed int v1 = (vector signed int) { 0 };
3509     vector signed int v2 = (vector signed int) { 1 };
3510     v1 = vec_add(v1, v2);
3511     return 0;
3512 }
3513 EOF
3514
3515         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3516     fi
3517
3518 elif enabled sparc; then
3519
3520     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3521
3522 elif enabled x86; then
3523
3524     check_builtin rdtsc    intrin.h   "__rdtsc()"
3525     check_builtin mm_empty mmintrin.h "_mm_empty()"
3526
3527     enable local_aligned_8 local_aligned_16
3528
3529     # check whether EBP is available on x86
3530     # As 'i' is stored on the stack, this program will crash
3531     # if the base pointer is used to access it because the
3532     # base pointer is cleared in the inline assembly code.
3533     check_exec_crash <<EOF && enable ebp_available
3534 volatile int i=0;
3535 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3536 return i;
3537 EOF
3538
3539     # check whether EBX is available on x86
3540     check_inline_asm ebx_available '""::"b"(0)' &&
3541         check_inline_asm ebx_available '"":::"%ebx"'
3542
3543     # check whether xmm clobbers are supported
3544     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3545
3546     # check whether binutils is new enough to compile SSSE3/MMXEXT
3547     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3548     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3549
3550     if ! disabled_any asm mmx yasm; then
3551         if check_cmd $yasmexe --version; then
3552             enabled x86_64 && yasm_extra="-m amd64"
3553             yasm_debug="-g dwarf2"
3554         elif check_cmd nasm -v; then
3555             yasmexe=nasm
3556             yasm_debug="-g -F dwarf"
3557             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3558         fi
3559
3560         YASMFLAGS="-f $objformat $yasm_extra"
3561         enabled pic               && append YASMFLAGS "-DPIC"
3562         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3563         case "$objformat" in
3564             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3565         esac
3566
3567         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3568             die "yasm not found, use --disable-yasm for a crippled build"
3569         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3570         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3571     fi
3572
3573     case "$cpu" in
3574         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3575             disable fast_clz
3576         ;;
3577     esac
3578
3579 fi
3580
3581 if enabled asm; then
3582     as=${gas:=$as}
3583     check_as <<EOF && enable gnu_as || \
3584         $nogas "GNU assembler not found, install gas-preprocessor"
3585 .macro m n
3586 \n: .int 0
3587 .endm
3588 m x
3589 EOF
3590 fi
3591
3592 check_ldflags -Wl,--as-needed
3593
3594 if check_func dlopen; then
3595     ldl=
3596 elif check_func dlopen -ldl; then
3597     ldl=-ldl
3598 fi
3599
3600 if ! disabled network; then
3601     check_type "sys/types.h sys/socket.h" socklen_t
3602     check_type netdb.h "struct addrinfo"
3603     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3604     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3605     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3606     check_type netinet/in.h "struct sockaddr_in6"
3607     check_type poll.h "struct pollfd"
3608     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3609     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3610     check_type netinet/sctp.h "struct sctp_event_subscribe"
3611     check_func getaddrinfo $network_extralibs
3612     check_func getservbyport $network_extralibs
3613     # Prefer arpa/inet.h over winsock2
3614     if check_header arpa/inet.h ; then
3615         check_func closesocket
3616     elif check_header winsock2.h ; then
3617         check_func_headers winsock2.h closesocket -lws2 &&
3618             network_extralibs="-lws2" ||
3619         { check_func_headers winsock2.h closesocket -lws2_32 &&
3620             network_extralibs="-lws2_32"; }
3621         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3622         check_type ws2tcpip.h socklen_t
3623         check_type ws2tcpip.h "struct addrinfo"
3624         check_type ws2tcpip.h "struct group_source_req"
3625         check_type ws2tcpip.h "struct ip_mreq_source"
3626         check_type ws2tcpip.h "struct ipv6_mreq"
3627         check_type winsock2.h "struct pollfd"
3628         check_type ws2tcpip.h "struct sockaddr_in6"
3629         check_type ws2tcpip.h "struct sockaddr_storage"
3630         check_struct winsock2.h "struct sockaddr" sa_len
3631     else
3632         disable network
3633     fi
3634 fi
3635
3636 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3637 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3638
3639 check_func  fcntl
3640 check_func  fork
3641 check_func_headers stdlib.h getenv
3642 check_func  gethrtime
3643 check_func  getopt
3644 check_func  getrusage
3645 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3646 check_func  gettimeofday
3647 check_func  inet_aton $network_extralibs
3648 check_func  isatty
3649 check_func  localtime_r
3650 check_func  ${malloc_prefix}memalign            && enable memalign
3651 check_func  mkstemp
3652 check_func  mmap
3653 check_func  mprotect
3654 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3655 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3656 check_func  setrlimit
3657 check_func  strerror_r
3658 check_func  strptime
3659 check_func  strtok_r
3660 check_func  sched_getaffinity
3661 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3662 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3663 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3664 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3665 check_func  sysconf
3666 check_func  sysctl
3667 check_func  usleep
3668 check_func_headers io.h setmode
3669 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3670 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3671 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3672 check_func_headers windows.h GetProcessAffinityMask
3673 check_func_headers windows.h GetProcessTimes
3674 check_func_headers windows.h GetSystemTimeAsFileTime
3675 check_func_headers windows.h MapViewOfFile
3676 check_func_headers windows.h SetConsoleTextAttribute
3677 check_func_headers windows.h Sleep
3678 check_func_headers windows.h VirtualAlloc
3679
3680 check_header direct.h
3681 check_header dlfcn.h
3682 check_header dxva.h
3683 check_header dxva2api.h
3684 check_header io.h
3685 check_header malloc.h
3686 check_header poll.h
3687 check_header sys/mman.h
3688 check_header sys/param.h
3689 check_header sys/resource.h
3690 check_header sys/select.h
3691 check_header sys/time.h
3692 check_header sys/un.h
3693 check_header unistd.h
3694 check_header vdpau/vdpau.h
3695 check_header vdpau/vdpau_x11.h
3696 check_header VideoDecodeAcceleration/VDADecoder.h
3697 check_header windows.h
3698 check_header X11/extensions/XvMClib.h
3699
3700 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3701 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3702
3703 if ! disabled w32threads && ! enabled pthreads; then
3704     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3705 fi
3706
3707 # check for some common methods of building with pthread support
3708 # do this before the optional library checks as some of them require pthreads
3709 if ! disabled pthreads && ! enabled w32threads; then
3710     enable pthreads
3711     if check_func pthread_create; then
3712         :
3713     elif check_func pthread_create -pthread; then
3714         add_cflags -pthread
3715         add_extralibs -pthread
3716     elif check_func pthread_create -pthreads; then
3717         add_cflags -pthreads
3718         add_extralibs -pthreads
3719     elif check_func pthread_create -lpthreadGC2; then
3720         add_extralibs -lpthreadGC2
3721     elif ! check_lib pthread.h pthread_create -lpthread; then
3722         disable pthreads
3723     fi
3724 fi
3725
3726 for thread in $THREADS_LIST; do
3727     if enabled $thread; then
3728         test -n "$thread_type" &&
3729             die "ERROR: Only one thread type must be selected." ||
3730             thread_type="$thread"
3731     fi
3732 done
3733
3734 enabled sync_val_compare_and_swap && enable atomics_gcc
3735 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3736 enabled MemoryBarrier && enable atomics_win32
3737
3738 check_lib math.h sin -lm && LIBM="-lm"
3739 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3740
3741 atan2f_args=2
3742 ldexpf_args=2
3743 powf_args=2
3744
3745 for func in $MATH_FUNCS; do
3746     eval check_mathfunc $func \${${func}_args:-1}
3747 done
3748
3749 # these are off by default, so fail if requested and not available
3750 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3751 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3752 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3753 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3754 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3755 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3756 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3757                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3758                                done || die "ERROR: libgsm not found"; }
3759 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3760 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3761 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3762 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3763 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3764 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3765 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3766 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3767 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3768 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3769 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3770 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3771 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3772 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3773 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3774 enabled libvpx            && {
3775     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3776                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3777     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3778                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3779     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3780     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3781 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3782 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3783                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3784                                die "ERROR: libx264 version must be >= 0.118."; }
3785 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3786 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3787 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3788                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3789                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3790                                die "ERROR: openssl not found"; }
3791
3792 if enabled gnutls; then
3793     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3794     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3795 fi
3796
3797 # libdc1394 check
3798 if enabled libdc1394; then
3799     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3800         enable libdc1394_2; } ||
3801     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3802         enable libdc1394_1; } ||
3803     die "ERROR: No version of libdc1394 found "
3804 fi
3805
3806 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3807     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3808     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3809     enable sdl
3810 fi
3811
3812 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3813
3814 check_header linux/fb.h
3815 check_header linux/videodev2.h
3816 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3817
3818 check_header sys/videoio.h
3819
3820 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3821 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3822 # w32api 3.12 had it defined wrong
3823 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3824
3825 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3826 { check_header dev/bktr/ioctl_meteor.h &&
3827   check_header dev/bktr/ioctl_bt848.h; } ||
3828 { check_header machine/ioctl_meteor.h &&
3829   check_header machine/ioctl_bt848.h; } ||
3830 { check_header dev/video/meteor/ioctl_meteor.h &&
3831   check_header dev/video/bktr/ioctl_bt848.h; } ||
3832 check_header dev/ic/bt8xx.h
3833
3834 check_header sndio.h
3835 check_header sys/soundcard.h
3836 check_header soundcard.h
3837
3838 enabled_any alsa_indev alsa_outdev &&
3839     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3840
3841 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3842     check_func jack_port_get_latency_range -ljack
3843
3844 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3845
3846 if enabled libcdio; then
3847     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3848     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3849 fi
3850
3851 enabled x11grab                                           &&
3852 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3853 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3854 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3855
3856 enabled vdpau &&
3857     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3858     disable vdpau
3859
3860 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3861
3862 # add some useful compiler flags if supported
3863 check_cflags -Wdeclaration-after-statement
3864 check_cflags -Wall
3865 check_cflags -Wno-parentheses
3866 check_cflags -Wno-switch
3867 check_cflags -Wno-format-zero-length
3868 check_cflags -Wdisabled-optimization
3869 check_cflags -Wpointer-arith
3870 check_cflags -Wredundant-decls
3871 check_cflags -Wno-pointer-sign
3872 check_cflags -Wcast-qual
3873 check_cflags -Wwrite-strings
3874 check_cflags -Wtype-limits
3875 check_cflags -Wundef
3876 check_cflags -Wmissing-prototypes
3877 check_cflags -Wstrict-prototypes
3878 enabled extra_warnings && check_cflags -Winline
3879
3880 # add some linker flags
3881 check_ldflags -Wl,--warn-common
3882 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3883 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3884
3885 enabled xmm_clobber_test &&
3886     check_ldflags -Wl,--wrap,avcodec_open2              \
3887                   -Wl,--wrap,avcodec_decode_audio4      \
3888                   -Wl,--wrap,avcodec_decode_video2      \
3889                   -Wl,--wrap,avcodec_decode_subtitle2   \
3890                   -Wl,--wrap,avcodec_encode_audio2      \
3891                   -Wl,--wrap,avcodec_encode_video       \
3892                   -Wl,--wrap,avcodec_encode_subtitle    \
3893                   -Wl,--wrap,sws_scale ||
3894     disable xmm_clobber_test
3895
3896 echo "X{};" > $TMPV
3897 if test_ldflags -Wl,--version-script,$TMPV; then
3898     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3899     check_cc <<EOF && enable symver_asm_label
3900 void ff_foo(void) __asm__ ("av_foo@VERSION");
3901 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3902 EOF
3903     check_cc <<EOF && enable symver_gnu_asm
3904 __asm__(".symver ff_foo,av_foo@VERSION");
3905 void ff_foo(void) {}
3906 EOF
3907 fi
3908
3909 if [ -z "$optflags" ]; then
3910     if enabled small; then
3911         optflags=$cflags_size
3912     elif enabled optimizations; then
3913         optflags=$cflags_speed
3914     else
3915         optflags=$cflags_noopt
3916     fi
3917 fi
3918
3919 check_optflags(){
3920     check_cflags "$@"
3921     enabled lto && check_ldflags "$@"
3922 }
3923
3924
3925 if enabled lto; then
3926     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3927     check_cflags  -flto
3928     check_ldflags -flto $cpuflags
3929 fi
3930
3931 check_optflags $optflags
3932 check_optflags -fno-math-errno
3933 check_optflags -fno-signed-zeros
3934
3935 if enabled icc; then
3936     # Just warnings, no remarks
3937     check_cflags -w1
3938     # -wd: Disable following warnings
3939     # 144, 167, 556: -Wno-pointer-sign
3940     # 1292: attribute "foo" ignored
3941     # 1419: external declaration in primary source file
3942     # 10006: ignoring unknown option -fno-signed-zeros
3943     # 10148: ignoring unknown option -Wno-parentheses
3944     # 10156: ignoring option '-W'; no argument required
3945     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3946     # 11030: Warning unknown option --as-needed
3947     # 10156: ignoring option '-export'; no argument required
3948     check_ldflags -wd10156,11030
3949     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3950     enable ebp_available
3951     if enabled x86_32; then
3952         icc_version=$($cc -dumpversion)
3953         test ${icc_version%%.*} -ge 11 &&
3954             check_cflags -falign-stack=maintain-16-byte ||
3955             disable aligned_stack
3956     fi
3957 elif enabled ccc; then
3958     # disable some annoying warnings
3959     add_cflags -msg_disable bitnotint
3960     add_cflags -msg_disable mixfuncvoid
3961     add_cflags -msg_disable nonstandcast
3962     add_cflags -msg_disable unsupieee
3963 elif enabled gcc; then
3964     check_optflags -fno-tree-vectorize
3965     check_cflags -Werror=implicit-function-declaration
3966     check_cflags -Werror=missing-prototypes
3967     check_cflags -Werror=return-type
3968     check_cflags -Werror=declaration-after-statement
3969     check_cflags -Werror=vla
3970 elif enabled llvm_gcc; then
3971     check_cflags -mllvm -stack-alignment=16
3972 elif enabled clang; then
3973     check_cflags -mllvm -stack-alignment=16
3974     check_cflags -Qunused-arguments
3975     check_cflags -Werror=implicit-function-declaration
3976     check_cflags -Werror=missing-prototypes
3977     check_cflags -Werror=return-type
3978 elif enabled armcc; then
3979     # 2523: use of inline assembler is deprecated
3980     add_cflags -W${armcc_opt},--diag_suppress=2523
3981     add_cflags -W${armcc_opt},--diag_suppress=1207
3982     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3983     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3984     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3985     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3986 elif enabled tms470; then
3987     add_cflags -pds=824 -pds=837
3988 elif enabled pathscale; then
3989     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3990 elif enabled_any msvc icl; then
3991     enabled x86_32 && disable aligned_stack
3992     enabled_all x86_32 debug && add_cflags -Oy-
3993     enabled debug && add_ldflags -debug
3994     if enabled icl; then
3995         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
3996         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
3997         # icl will pass the inline asm tests but inline asm is currently
3998         # not supported (build will fail)
3999         disable inline_asm
4000     fi
4001 fi
4002
4003 case $target_os in
4004     osf1)
4005         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4006     ;;
4007     plan9)
4008         add_cppflags -Dmain=plan9_main
4009     ;;
4010 esac
4011
4012 enabled_any $THREADS_LIST      && enable threads
4013 enabled_any $ATOMICS_LIST      && enable atomics_native
4014
4015 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4016
4017 check_deps $CONFIG_LIST       \
4018            $CONFIG_EXTRA      \
4019            $HAVE_LIST         \
4020            $ALL_COMPONENTS    \
4021
4022 ! enabled_any memalign posix_memalign aligned_malloc &&
4023     enabled_any $need_memalign && enable memalign_hack
4024