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[ffmpeg] / 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-lsp            disable LSP code
126   --disable-lzo            disable LZO decoder code
127   --disable-mdct           disable MDCT code
128   --disable-rdft           disable RDFT code
129   --disable-fft            disable FFT code
130
131 Hardware accelerators:
132   --enable-dxva2           enable DXVA2 code
133   --enable-vaapi           enable VAAPI code
134   --enable-vda             enable VDA code
135   --enable-vdpau           enable VDPAU code
136
137 Individual component options:
138   --disable-everything     disable all components listed below
139   --disable-encoder=NAME   disable encoder NAME
140   --enable-encoder=NAME    enable encoder NAME
141   --disable-encoders       disable all encoders
142   --disable-decoder=NAME   disable decoder NAME
143   --enable-decoder=NAME    enable decoder NAME
144   --disable-decoders       disable all decoders
145   --disable-hwaccel=NAME   disable hwaccel NAME
146   --enable-hwaccel=NAME    enable hwaccel NAME
147   --disable-hwaccels       disable all hwaccels
148   --disable-muxer=NAME     disable muxer NAME
149   --enable-muxer=NAME      enable muxer NAME
150   --disable-muxers         disable all muxers
151   --disable-demuxer=NAME   disable demuxer NAME
152   --enable-demuxer=NAME    enable demuxer NAME
153   --disable-demuxers       disable all demuxers
154   --enable-parser=NAME     enable parser NAME
155   --disable-parser=NAME    disable parser NAME
156   --disable-parsers        disable all parsers
157   --enable-bsf=NAME        enable bitstream filter NAME
158   --disable-bsf=NAME       disable bitstream filter NAME
159   --disable-bsfs           disable all bitstream filters
160   --enable-protocol=NAME   enable protocol NAME
161   --disable-protocol=NAME  disable protocol NAME
162   --disable-protocols      disable all protocols
163   --enable-indev=NAME      enable input device NAME
164   --disable-indev=NAME     disable input device NAME
165   --disable-indevs         disable input devices
166   --enable-outdev=NAME     enable output device NAME
167   --disable-outdev=NAME    disable output device NAME
168   --disable-outdevs        disable output devices
169   --disable-devices        disable all devices
170   --enable-filter=NAME     enable filter NAME
171   --disable-filter=NAME    disable filter NAME
172   --disable-filters        disable all filters
173
174 External library support:
175   --enable-avisynth        enable reading of AVISynth script files [no]
176   --enable-bzlib           enable bzlib [autodetect]
177   --enable-frei0r          enable frei0r video filtering
178   --enable-gnutls          enable gnutls [no]
179   --enable-libcdio         enable audio CD grabbing with libcdio
180   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
181                            and libraw1394 [no]
182   --enable-libfaac         enable AAC encoding via libfaac [no]
183   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
184   --enable-libfreetype     enable libfreetype [no]
185   --enable-libgsm          enable GSM de/encoding via libgsm [no]
186   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
187   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
188   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
189   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
190   --enable-libopencv       enable video filtering via libopencv [no]
191   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
192   --enable-libopus         enable Opus decoding via libopus [no]
193   --enable-libpulse        enable Pulseaudio input via libpulse [no]
194   --enable-librtmp         enable RTMP[E] support via librtmp [no]
195   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
196   --enable-libspeex        enable Speex de/encoding via libspeex [no]
197   --enable-libtheora       enable Theora encoding via libtheora [no]
198   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
199   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
200   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
201   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
202   --enable-libx264         enable H.264 encoding via x264 [no]
203   --enable-libxavs         enable AVS encoding via xavs [no]
204   --enable-libxvid         enable Xvid encoding via xvidcore,
205                            native MPEG-4/Xvid encoder exists [no]
206   --enable-openssl         enable openssl [no]
207   --enable-x11grab         enable X11 grabbing [no]
208   --enable-zlib            enable zlib [autodetect]
209
210 Advanced options (experts only):
211   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
212   --enable-cross-compile   assume a cross-compiler is used
213   --sysroot=PATH           root of cross-build tree
214   --sysinclude=PATH        location of cross-build system headers
215   --target-os=OS           compiler targets OS [$target_os]
216   --target-exec=CMD        command to run executables on target
217   --target-path=DIR        path to view of build directory on target
218   --toolchain=NAME         set tool defaults according to NAME
219   --nm=NM                  use nm tool
220   --ar=AR                  use archive tool AR [$ar_default]
221   --as=AS                  use assembler AS [$as_default]
222   --cc=CC                  use C compiler CC [$cc_default]
223   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
224   --ld=LD                  use linker LD
225   --host-cc=HOSTCC         use host C compiler HOSTCC
226   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
227   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
228   --host-ld=HOSTLD         use host linker HOSTLD
229   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
230   --host-libs=HLIBS        use libs HLIBS when linking for host
231   --host-os=OS             compiler host OS [$target_os]
232   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
233   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
234   --extra-libs=ELIBS       add ELIBS [$ELIBS]
235   --extra-version=STRING   version string suffix []
236   --optflags=OPTFLAGS      override optimization-related compiler flags
237   --build-suffix=SUFFIX    library name suffix []
238   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
239   --arch=ARCH              select architecture [$arch]
240   --cpu=CPU                select the minimum required CPU (affects
241                            instruction selection, may crash on older CPUs)
242   --enable-pic             build position-independent code
243   --enable-sram            allow use of on-chip SRAM
244   --enable-thumb           compile for Thumb instruction set
245   --disable-symver         disable symbol versioning
246   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
247   --disable-safe-bitstream-reader
248                            disable buffer boundary checking in bitreaders
249                            (faster, but may crash)
250   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
251   --enable-lto             use link-time optimization
252
253 Optimization options (experts only):
254   --disable-asm            disable all assembler optimizations
255   --disable-altivec        disable AltiVec optimizations
256   --disable-amd3dnow       disable 3DNow! optimizations
257   --disable-amd3dnowext    disable 3DNow! extended optimizations
258   --disable-mmx            disable MMX optimizations
259   --disable-mmxext         disable MMXEXT optimizations
260   --disable-sse            disable SSE optimizations
261   --disable-sse2           disable SSE2 optimizations
262   --disable-sse3           disable SSE3 optimizations
263   --disable-ssse3          disable SSSE3 optimizations
264   --disable-sse4           disable SSE4 optimizations
265   --disable-sse42          disable SSE4.2 optimizations
266   --disable-avx            disable AVX optimizations
267   --disable-fma4           disable FMA4 optimizations
268   --disable-armv5te        disable armv5te optimizations
269   --disable-armv6          disable armv6 optimizations
270   --disable-armv6t2        disable armv6t2 optimizations
271   --disable-vfp            disable VFP optimizations
272   --disable-neon           disable NEON optimizations
273   --disable-vis            disable VIS optimizations
274   --disable-inline-asm     disable use of inline assembler
275   --disable-yasm           disable use of yasm assembler
276
277 Developer options (useful when working on Libav itself):
278   --disable-debug          disable debugging symbols
279   --enable-debug=LEVEL     set the debug level [$debuglevel]
280   --disable-optimizations  disable compiler optimizations
281   --enable-extra-warnings  enable more compiler warnings
282   --samples=PATH           location of test samples for FATE, if not set use
283                            \$LIBAV_SAMPLES at make invocation time.
284   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
285                            should be used only for debugging purposes)
286   --enable-random          randomly enable/disable components
287   --disable-random
288   --enable-random=LIST     randomly enable/disable specific components or
289   --disable-random=LIST    component groups. LIST is a comma-separated list
290                            of NAME[:PROB] entries where NAME is a component
291                            (group) and PROB the probability associated with
292                            NAME (default 0.5).
293   --random-seed=VALUE      seed value for --enable/disable-random
294
295 NOTE: Object files are built at the place where configure is launched.
296 EOF
297   exit 0
298 }
299
300 quotes='""'
301
302 log(){
303     echo "$@" >> $logfile
304 }
305
306 log_file(){
307     log BEGIN $1
308     pr -n -t $1 >> $logfile
309     log END $1
310 }
311
312 echolog(){
313     log "$@"
314     echo "$@"
315 }
316
317 warn(){
318     log "WARNING: $*"
319     WARNINGS="${WARNINGS}WARNING: $*\n"
320 }
321
322 die(){
323     echolog "$@"
324     cat <<EOF
325
326 If you think configure made a mistake, make sure you are using the latest
327 version from Git.  If the latest version fails, report the problem to the
328 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
329 EOF
330     if disabled logging; then
331         cat <<EOF
332 Rerun configure with logging enabled (do not use --disable-logging), and
333 include the log this produces with your report.
334 EOF
335     else
336         cat <<EOF
337 Include the log file "$logfile" produced by configure as this will help
338 solving the problem.
339 EOF
340     fi
341     exit 1
342 }
343
344 # Avoid locale weirdness, besides we really just want to translate ASCII.
345 toupper(){
346     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
347 }
348
349 tolower(){
350     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
351 }
352
353 c_escape(){
354     echo "$*" | sed 's/["\\]/\\\0/g'
355 }
356
357 sh_quote(){
358     v=$(echo "$1" | sed "s/'/'\\\\''/g")
359     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
360     echo "$v"
361 }
362
363 cleanws(){
364     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
365 }
366
367 filter(){
368     pat=$1
369     shift
370     for v; do
371         eval "case $v in $pat) echo $v ;; esac"
372     done
373 }
374
375 filter_out(){
376     pat=$1
377     shift
378     for v; do
379         eval "case $v in $pat) ;; *) echo $v ;; esac"
380     done
381 }
382
383 map(){
384     m=$1
385     shift
386     for v; do eval $m; done
387 }
388
389 add_suffix(){
390     suffix=$1
391     shift
392     for v; do echo ${v}${suffix}; done
393 }
394
395 set_all(){
396     value=$1
397     shift
398     for var in $*; do
399         eval $var=$value
400     done
401 }
402
403 set_weak(){
404     value=$1
405     shift
406     for var; do
407         eval : \${$var:=$value}
408     done
409 }
410
411 sanitize_var_name(){
412     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
413 }
414
415 set_safe(){
416     var=$1
417     shift
418     eval $(sanitize_var_name "$var")='$*'
419 }
420
421 get_safe(){
422     eval echo \$$(sanitize_var_name "$1")
423 }
424
425 pushvar(){
426     for var in $*; do
427         eval level=\${${var}_level:=0}
428         eval ${var}_${level}="\$$var"
429         eval ${var}_level=$(($level+1))
430     done
431 }
432
433 popvar(){
434     for var in $*; do
435         eval level=\${${var}_level:-0}
436         test $level = 0 && continue
437         eval level=$(($level-1))
438         eval $var="\${${var}_${level}}"
439         eval ${var}_level=$level
440         eval unset ${var}_${level}
441     done
442 }
443
444 enable(){
445     set_all yes $*
446 }
447
448 disable(){
449     set_all no $*
450 }
451
452 enable_weak(){
453     set_weak yes $*
454 }
455
456 disable_weak(){
457     set_weak no $*
458 }
459
460 enable_safe(){
461     for var; do
462         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
463     done
464 }
465
466 disable_safe(){
467     for var; do
468         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
469     done
470 }
471
472 do_enable_deep(){
473     for var; do
474         enabled $var && continue
475         eval sel="\$${var}_select"
476         eval sgs="\$${var}_suggest"
477         pushvar var sgs
478         enable_deep $sel
479         popvar sgs
480         enable_deep_weak $sgs
481         popvar var
482     done
483 }
484
485 enable_deep(){
486     do_enable_deep $*
487     enable $*
488 }
489
490 enable_deep_weak(){
491     do_enable_deep $*
492     enable_weak $*
493 }
494
495 enabled(){
496     test "${1#!}" = "$1" && op== || op=!=
497     eval test "x\$${1#!}" $op "xyes"
498 }
499
500 disabled(){
501     test "${1#!}" = "$1" && op== || op=!=
502     eval test "x\$${1#!}" $op "xno"
503 }
504
505 enabled_all(){
506     for opt; do
507         enabled $opt || return 1
508     done
509 }
510
511 disabled_all(){
512     for opt; do
513         disabled $opt || return 1
514     done
515 }
516
517 enabled_any(){
518     for opt; do
519         enabled $opt && return 0
520     done
521 }
522
523 disabled_any(){
524     for opt; do
525         disabled $opt && return 0
526     done
527     return 1
528 }
529
530 set_default(){
531     for opt; do
532         eval : \${$opt:=\$${opt}_default}
533     done
534 }
535
536 is_in(){
537     value=$1
538     shift
539     for var in $*; do
540         [ $var = $value ] && return 0
541     done
542     return 1
543 }
544
545 do_check_deps(){
546     for cfg; do
547         cfg="${cfg#!}"
548         enabled ${cfg}_checking && die "Circular dependency for $cfg."
549         disabled ${cfg}_checking && continue
550         enable ${cfg}_checking
551         append allopts $cfg
552
553         eval dep_all="\$${cfg}_deps"
554         eval dep_any="\$${cfg}_deps_any"
555         eval dep_sel="\$${cfg}_select"
556         eval dep_sgs="\$${cfg}_suggest"
557         eval dep_ifa="\$${cfg}_if"
558         eval dep_ifn="\$${cfg}_if_any"
559
560         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
561         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
562         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
563
564         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
565         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
566         enabled_all  $dep_all || disable $cfg
567         enabled_any  $dep_any || disable $cfg
568         disabled_any $dep_sel && disable $cfg
569
570         if enabled $cfg; then
571             enable_deep $dep_sel
572             enable_deep_weak $dep_sgs
573         fi
574
575         disable ${cfg}_checking
576     done
577 }
578
579 check_deps(){
580     unset allopts
581
582     do_check_deps "$@"
583
584     for cfg in $allopts; do
585         enabled $cfg || continue
586         eval dep_extralibs="\$${cfg}_extralibs"
587         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
588     done
589 }
590
591 print_config(){
592     pfx=$1
593     files=$2
594     shift 2
595     map 'eval echo "$v \${$v:-no}"' "$@" |
596     awk "BEGIN { split(\"$files\", files) }
597         {
598             c = \"$pfx\" toupper(\$1);
599             v = \$2;
600             sub(/yes/, 1, v);
601             sub(/no/,  0, v);
602             for (f in files) {
603                 file = files[f];
604                 if (file ~ /\\.h\$/) {
605                     printf(\"#define %s %d\\n\", c, v) >>file;
606                 } else if (file ~ /\\.asm\$/) {
607                     printf(\"%%define %s %d\\n\", c, v) >>file;
608                 } else if (file ~ /\\.mak\$/) {
609                     n = -v ? \"\" : \"!\";
610                     printf(\"%s%s=yes\\n\", n, c) >>file;
611                 }
612             }
613         }"
614 }
615
616 print_enabled(){
617     suf=$1
618     shift
619     for v; do
620         enabled $v && printf "%s\n" ${v%$suf};
621     done
622 }
623
624 append(){
625     var=$1
626     shift
627     eval "$var=\"\$$var $*\""
628 }
629
630 prepend(){
631     var=$1
632     shift
633     eval "$var=\"$* \$$var\""
634 }
635
636 add_cppflags(){
637     append CPPFLAGS "$@"
638 }
639
640 add_cflags(){
641     append CFLAGS $($cflags_filter "$@")
642 }
643
644 add_asflags(){
645     append ASFLAGS $($asflags_filter "$@")
646 }
647
648 add_ldflags(){
649     append LDFLAGS $($ldflags_filter "$@")
650 }
651
652 add_extralibs(){
653     prepend extralibs $($ldflags_filter "$@")
654 }
655
656 add_host_cppflags(){
657     append host_cppflags "$@"
658 }
659
660 add_host_cflags(){
661     append host_cflags $($host_cflags_filter "$@")
662 }
663
664 add_host_ldflags(){
665     append host_ldflags $($host_ldflags_filter "$@")
666 }
667
668 add_compat(){
669     append compat_objs $1
670     shift
671     map 'add_cppflags -D$v' "$@"
672 }
673
674 check_cmd(){
675     log "$@"
676     "$@" >> $logfile 2>&1
677 }
678
679 cc_o(){
680     eval printf '%s\\n' $CC_O
681 }
682
683 cc_e(){
684     eval printf '%s\\n' $CC_E
685 }
686
687 check_cc(){
688     log check_cc "$@"
689     cat > $TMPC
690     log_file $TMPC
691     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
692 }
693
694 check_cpp(){
695     log check_cpp "$@"
696     cat > $TMPC
697     log_file $TMPC
698     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
699 }
700
701 as_o(){
702     eval printf '%s\\n' $AS_O
703 }
704
705 check_as(){
706     log check_as "$@"
707     cat > $TMPS
708     log_file $TMPS
709     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
710 }
711
712 check_inline_asm(){
713     log check_inline_asm "$@"
714     name="$1"
715     code="$2"
716     shift 2
717     disable $name
718     check_cc "$@" <<EOF && enable $name
719 void foo(void){ __asm__ volatile($code); }
720 EOF
721 }
722
723 check_insn(){
724     log check_insn "$@"
725     check_inline_asm ${1}_inline "\"$2\""
726     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
727 }
728
729 check_yasm(){
730     log check_yasm "$@"
731     echo "$1" > $TMPS
732     log_file $TMPS
733     shift 1
734     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
735 }
736
737 ld_o(){
738     eval printf '%s\\n' $LD_O
739 }
740
741 check_ld(){
742     log check_ld "$@"
743     flags=$(filter_out '-l*' "$@")
744     libs=$(filter '-l*' "$@")
745     check_cc $($cflags_filter $flags) || return
746     flags=$($ldflags_filter $flags)
747     libs=$($ldflags_filter $libs)
748     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
749 }
750
751 check_code(){
752     log check_code "$@"
753     check=$1
754     headers=$2
755     code=$3
756     shift 3
757     {
758         for hdr in $headers; do
759             echo "#include <$hdr>"
760         done
761         echo "int main(void) { $code; return 0; }"
762     } | check_$check "$@"
763 }
764
765 check_cppflags(){
766     log check_cppflags "$@"
767     check_cc "$@" <<EOF && append CPPFLAGS "$@"
768 int x;
769 EOF
770 }
771
772 check_cflags(){
773     log check_cflags "$@"
774     set -- $($cflags_filter "$@")
775     check_cc "$@" <<EOF && append CFLAGS "$@"
776 int x;
777 EOF
778 }
779
780 test_ldflags(){
781     log test_ldflags "$@"
782     check_ld "$@" <<EOF
783 int main(void){ return 0; }
784 EOF
785 }
786
787 check_ldflags(){
788     log check_ldflags "$@"
789     test_ldflags "$@" && add_ldflags "$@"
790 }
791
792 check_header(){
793     log check_header "$@"
794     header=$1
795     shift
796     disable_safe $header
797     check_cpp "$@" <<EOF && enable_safe $header
798 #include <$header>
799 int x;
800 EOF
801 }
802
803 check_func(){
804     log check_func "$@"
805     func=$1
806     shift
807     disable $func
808     check_ld "$@" <<EOF && enable $func
809 extern int $func();
810 int main(void){ $func(); }
811 EOF
812 }
813
814 check_mathfunc(){
815     log check_mathfunc "$@"
816     func=$1
817     narg=$2
818     shift 2
819     test $narg = 2 && args="f, g" || args="f"
820     disable $func
821     check_ld "$@" <<EOF && enable $func
822 #include <math.h>
823 float foo(float f, float g) { return $func($args); }
824 int main(void){ return 0; }
825 EOF
826 }
827
828 check_func_headers(){
829     log check_func_headers "$@"
830     headers=$1
831     funcs=$2
832     shift 2
833     {
834         for hdr in $headers; do
835             echo "#include <$hdr>"
836         done
837         for func in $funcs; do
838             echo "long check_$func(void) { return (long) $func; }"
839         done
840         echo "int main(void) { return 0; }"
841     } | check_ld "$@" && enable $funcs && enable_safe $headers
842 }
843
844 check_cpp_condition(){
845     log check_cpp_condition "$@"
846     header=$1
847     condition=$2
848     shift 2
849     check_cpp "$@" <<EOF
850 #include <$header>
851 #if !($condition)
852 #error "unsatisfied condition: $condition"
853 #endif
854 EOF
855 }
856
857 check_lib(){
858     log check_lib "$@"
859     header="$1"
860     func="$2"
861     shift 2
862     check_header $header && check_func $func "$@" && add_extralibs "$@"
863 }
864
865 check_lib2(){
866     log check_lib2 "$@"
867     headers="$1"
868     funcs="$2"
869     shift 2
870     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
871 }
872
873 check_pkg_config(){
874     log check_pkg_config "$@"
875     pkg="$1"
876     headers="$2"
877     funcs="$3"
878     shift 3
879     $pkg_config --exists $pkg || return
880     pkg_cflags=$($pkg_config --cflags $pkg)
881     pkg_libs=$($pkg_config --libs $pkg)
882     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
883         set_safe ${pkg}_cflags $pkg_cflags   &&
884         set_safe ${pkg}_libs   $pkg_libs
885 }
886
887 check_exec(){
888     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
889 }
890
891 check_exec_crash(){
892     code=$(cat)
893
894     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
895     # are safe but may not be available everywhere.  Thus we use
896     # raise(SIGTERM) instead.  The check is run in a subshell so we
897     # can redirect the "Terminated" message from the shell.  SIGBUS
898     # is not defined by standard C so it is used conditionally.
899
900     (check_exec "$@") >> $logfile 2>&1 <<EOF
901 #include <signal.h>
902 static void sighandler(int sig){
903     raise(SIGTERM);
904 }
905 int foo(void){
906     $code
907 }
908 int main(void){
909     signal(SIGILL, sighandler);
910     signal(SIGFPE, sighandler);
911     signal(SIGSEGV, sighandler);
912 #ifdef SIGBUS
913     signal(SIGBUS, sighandler);
914 #endif
915     foo();
916 }
917 EOF
918 }
919
920 check_type(){
921     log check_type "$@"
922     headers=$1
923     type=$2
924     shift 2
925     disable_safe "$type"
926     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
927 }
928
929 check_struct(){
930     log check_struct "$@"
931     headers=$1
932     struct=$2
933     member=$3
934     shift 3
935     disable_safe "${struct}_${member}"
936     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
937         enable_safe "${struct}_${member}"
938 }
939
940 check_builtin(){
941     log check_builtin "$@"
942     name=$1
943     headers=$2
944     builtin=$3
945     shift 3
946     disable "$name"
947     check_code ld "$headers" "$builtin" "$@" && enable "$name"
948 }
949
950 require(){
951     name="$1"
952     header="$2"
953     func="$3"
954     shift 3
955     check_lib $header $func "$@" || die "ERROR: $name not found"
956 }
957
958 require2(){
959     name="$1"
960     headers="$2"
961     func="$3"
962     shift 3
963     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
964 }
965
966 require_pkg_config(){
967     pkg="$1"
968     check_pkg_config "$@" || die "ERROR: $pkg not found"
969     add_cflags    $(get_safe ${pkg}_cflags)
970     add_extralibs $(get_safe ${pkg}_libs)
971 }
972
973 hostcc_o(){
974     eval printf '%s\\n' $HOSTCC_O
975 }
976
977 check_host_cc(){
978     log check_host_cc "$@"
979     cat > $TMPC
980     log_file $TMPC
981     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
982 }
983
984 check_host_cppflags(){
985     log check_host_cppflags "$@"
986     check_host_cc "$@" <<EOF && append host_cppflags "$@"
987 int x;
988 EOF
989 }
990
991 check_host_cflags(){
992     log check_host_cflags "$@"
993     set -- $($host_cflags_filter "$@")
994     check_host_cc "$@" <<EOF && append host_cflags "$@"
995 int x;
996 EOF
997 }
998
999 apply(){
1000     file=$1
1001     shift
1002     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1003 }
1004
1005 cp_if_changed(){
1006     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1007     mkdir -p "$(dirname $2)"
1008     $cp_f "$1" "$2"
1009 }
1010
1011 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1012 # system-dependent things.
1013
1014 COMPONENT_LIST="
1015     bsfs
1016     decoders
1017     demuxers
1018     encoders
1019     filters
1020     hwaccels
1021     indevs
1022     muxers
1023     outdevs
1024     parsers
1025     protocols
1026 "
1027
1028 EXTERNAL_LIBRARY_LIST="
1029     avisynth
1030     bzlib
1031     frei0r
1032     gnutls
1033     libcdio
1034     libdc1394
1035     libfaac
1036     libfdk_aac
1037     libfreetype
1038     libgsm
1039     libilbc
1040     libmp3lame
1041     libopencore_amrnb
1042     libopencore_amrwb
1043     libopencv
1044     libopenjpeg
1045     libopus
1046     libpulse
1047     librtmp
1048     libschroedinger
1049     libspeex
1050     libtheora
1051     libvo_aacenc
1052     libvo_amrwbenc
1053     libvorbis
1054     libvpx
1055     libx264
1056     libxavs
1057     libxvid
1058     openssl
1059     x11grab
1060     zlib
1061 "
1062
1063 HWACCEL_LIST="
1064     dxva2
1065     vaapi
1066     vda
1067     vdpau
1068 "
1069 LIBRARY_LIST="
1070     avcodec
1071     avdevice
1072     avfilter
1073     avformat
1074     avresample
1075     avutil
1076     swscale
1077 "
1078
1079 PROGRAM_LIST="
1080     avconv
1081     avplay
1082     avprobe
1083     avserver
1084 "
1085
1086 CONFIG_LIST="
1087     $COMPONENT_LIST
1088     $EXTERNAL_LIBRARY_LIST
1089     $HWACCEL_LIST
1090     $LIBRARY_LIST
1091     $PROGRAM_LIST
1092     dct
1093     doc
1094     fft
1095     gpl
1096     gray
1097     hardcoded_tables
1098     lsp
1099     lzo
1100     mdct
1101     memalign_hack
1102     network
1103     nonfree
1104     pic
1105     rdft
1106     runtime_cpudetect
1107     safe_bitstream_reader
1108     shared
1109     small
1110     sram
1111     static
1112     swscale_alpha
1113     thumb
1114     version3
1115     xmm_clobber_test
1116 "
1117
1118 THREADS_LIST='
1119     pthreads
1120     w32threads
1121 '
1122
1123 ARCH_LIST='
1124     aarch64
1125     alpha
1126     arm
1127     avr32
1128     avr32_ap
1129     avr32_uc
1130     bfin
1131     ia64
1132     m68k
1133     mips
1134     mips64
1135     parisc
1136     ppc
1137     ppc64
1138     s390
1139     sh4
1140     sparc
1141     sparc64
1142     tilegx
1143     tilepro
1144     tomi
1145     x86
1146     x86_32
1147     x86_64
1148 '
1149
1150 ARCH_EXT_LIST_ARM='
1151     armv5te
1152     armv6
1153     armv6t2
1154     neon
1155     vfp
1156     vfpv3
1157 '
1158
1159 ARCH_EXT_LIST_X86='
1160     amd3dnow
1161     amd3dnowext
1162     avx
1163     fma4
1164     mmx
1165     mmxext
1166     sse
1167     sse2
1168     sse3
1169     sse4
1170     sse42
1171     ssse3
1172 '
1173
1174 ARCH_EXT_LIST="
1175     $ARCH_EXT_LIST_ARM
1176     $ARCH_EXT_LIST_X86
1177     altivec
1178     ppc4xx
1179     vis
1180 "
1181
1182 HAVE_LIST_CMDLINE='
1183     inline_asm
1184     symver
1185     yasm
1186 '
1187
1188 HAVE_LIST_PUB='
1189     bigendian
1190     fast_unaligned
1191 '
1192
1193 MATH_FUNCS="
1194     atanf
1195     atan2f
1196     cbrtf
1197     cosf
1198     exp2
1199     exp2f
1200     expf
1201     isinf
1202     isnan
1203     ldexpf
1204     llrint
1205     llrintf
1206     log2
1207     log2f
1208     log10f
1209     lrint
1210     lrintf
1211     powf
1212     rint
1213     round
1214     roundf
1215     sinf
1216     trunc
1217     truncf
1218 "
1219
1220 HAVE_LIST="
1221     $ARCH_EXT_LIST
1222     $(add_suffix _external $ARCH_EXT_LIST)
1223     $(add_suffix _inline   $ARCH_EXT_LIST)
1224     $HAVE_LIST_CMDLINE
1225     $HAVE_LIST_PUB
1226     $THREADS_LIST
1227     $MATH_FUNCS
1228     aligned_malloc
1229     aligned_stack
1230     alsa_asoundlib_h
1231     altivec_h
1232     arpa_inet_h
1233     asm_mod_q
1234     asm_mod_y
1235     attribute_may_alias
1236     attribute_packed
1237     cdio_paranoia_h
1238     cdio_paranoia_paranoia_h
1239     closesocket
1240     cmov
1241     CommandLineToArgvW
1242     cpunop
1243     CryptGenRandom
1244     dcbzl
1245     dev_bktr_ioctl_bt848_h
1246     dev_bktr_ioctl_meteor_h
1247     dev_ic_bt8xx_h
1248     dev_video_bktr_ioctl_bt848_h
1249     dev_video_meteor_ioctl_meteor_h
1250     direct_h
1251     dlfcn_h
1252     dlopen
1253     dos_paths
1254     dxva_h
1255     ebp_available
1256     ebx_available
1257     fast_64bit
1258     fast_clz
1259     fast_cmov
1260     fcntl
1261     fork
1262     getaddrinfo
1263     gethrtime
1264     getopt
1265     GetProcessAffinityMask
1266     GetProcessMemoryInfo
1267     GetProcessTimes
1268     GetSystemTimeAsFileTime
1269     getrusage
1270     getservbyport
1271     gettimeofday
1272     gnu_as
1273     gsm_h
1274     ibm_asm
1275     inet_aton
1276     io_h
1277     isatty
1278     jack_port_get_latency_range
1279     ldbrx
1280     libdc1394_1
1281     libdc1394_2
1282     local_aligned_16
1283     local_aligned_8
1284     localtime_r
1285     loongson
1286     machine_ioctl_bt848_h
1287     machine_ioctl_meteor_h
1288     machine_rw_barrier
1289     malloc_h
1290     MapViewOfFile
1291     memalign
1292     MemoryBarrier
1293     mkstemp
1294     mm_empty
1295     mmap
1296     mprotect
1297     msvcrt
1298     nanosleep
1299     poll_h
1300     posix_memalign
1301     rdtsc
1302     sched_getaffinity
1303     sdl
1304     SetConsoleTextAttribute
1305     setmode
1306     setrlimit
1307     Sleep
1308     sndio_h
1309     socklen_t
1310     soundcard_h
1311     strerror_r
1312     strptime
1313     strtok_r
1314     struct_addrinfo
1315     struct_group_source_req
1316     struct_ip_mreq_source
1317     struct_ipv6_mreq
1318     struct_pollfd
1319     struct_rusage_ru_maxrss
1320     struct_sockaddr_in6
1321     struct_sockaddr_sa_len
1322     struct_sockaddr_storage
1323     struct_v4l2_frmivalenum_discrete
1324     symver_asm_label
1325     symver_gnu_asm
1326     sync_val_compare_and_swap
1327     sysconf
1328     sysctl
1329     sys_mman_h
1330     sys_param_h
1331     sys_resource_h
1332     sys_select_h
1333     sys_soundcard_h
1334     sys_time_h
1335     sys_videoio_h
1336     threads
1337     unistd_h
1338     usleep
1339     vfp_args
1340     VirtualAlloc
1341     windows_h
1342     winsock2_h
1343     xform_asm
1344     xmm_clobbers
1345 "
1346
1347 # options emitted with CONFIG_ prefix but not available on the command line
1348 CONFIG_EXTRA="
1349     aandcttables
1350     ac3dsp
1351     audio_frame_queue
1352     error_resilience
1353     gcrypt
1354     golomb
1355     gplv3
1356     h264chroma
1357     h264dsp
1358     h264pred
1359     h264qpel
1360     huffman
1361     lgplv3
1362     lpc
1363     mpegaudio
1364     mpegaudiodsp
1365     mpegvideo
1366     mpegvideoenc
1367     nettle
1368     rangecoder
1369     rtpdec
1370     rtpenc_chain
1371     sinewin
1372     videodsp
1373     vp3dsp
1374 "
1375
1376 CMDLINE_SELECT="
1377     $ARCH_EXT_LIST
1378     $CONFIG_LIST
1379     $HAVE_LIST_CMDLINE
1380     $THREADS_LIST
1381     asm
1382     cross_compile
1383     debug
1384     extra_warnings
1385     logging
1386     lto
1387     optimizations
1388 "
1389
1390 PATHS_LIST='
1391     bindir
1392     datadir
1393     incdir
1394     libdir
1395     mandir
1396     prefix
1397     shlibdir
1398 '
1399
1400 CMDLINE_SET="
1401     $PATHS_LIST
1402     ar
1403     arch
1404     as
1405     build_suffix
1406     cc
1407     cpu
1408     cross_prefix
1409     dep_cc
1410     extra_version
1411     host_cc
1412     host_cflags
1413     host_ld
1414     host_ldflags
1415     host_libs
1416     host_os
1417     ld
1418     logfile
1419     malloc_prefix
1420     nm
1421     optflags
1422     pkg_config
1423     random_seed
1424     samples
1425     sysinclude
1426     sysroot
1427     target_exec
1428     target_os
1429     target_path
1430     toolchain
1431 "
1432
1433 CMDLINE_APPEND="
1434     extra_cflags
1435     host_cppflags
1436 "
1437
1438 # code dependency declarations
1439
1440 # architecture extensions
1441
1442 armv5te_deps="arm"
1443 armv6_deps="arm"
1444 armv6t2_deps="arm"
1445 neon_deps="arm"
1446 vfp_deps="arm"
1447 vfpv3_deps="vfp"
1448
1449 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1450
1451 altivec_deps="ppc"
1452 ppc4xx_deps="ppc"
1453
1454 vis_deps="sparc"
1455
1456 x86_64_suggest="cmov fast_cmov"
1457
1458 amd3dnow_deps="mmx"
1459 amd3dnowext_deps="amd3dnow"
1460 mmx_deps="x86"
1461 mmxext_deps="mmx"
1462 sse_deps="mmxext"
1463 sse2_deps="sse"
1464 sse3_deps="sse2"
1465 ssse3_deps="sse3"
1466 sse4_deps="ssse3"
1467 sse42_deps="sse4"
1468 avx_deps="sse42"
1469 fma4_deps="avx"
1470
1471 mmx_external_deps="yasm"
1472 mmx_inline_deps="inline_asm"
1473 mmx_suggest="mmx_external mmx_inline"
1474
1475 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1476     eval dep=\$${ext}_deps
1477     eval ${ext}_external_deps='"${dep}_external"'
1478     eval ${ext}_inline_deps='"${dep}_inline"'
1479     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1480 done
1481
1482 aligned_stack_if_any="ppc x86"
1483 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1484 fast_clz_if_any="alpha avr32 mips ppc x86"
1485 fast_unaligned_if_any="ppc x86"
1486
1487 inline_asm_deps="!tms470"
1488 need_memalign="altivec neon sse"
1489
1490 symver_if_any="symver_asm_label symver_gnu_asm"
1491
1492 log2_deps="!msvcrt"
1493
1494 # subsystems
1495 dct_select="rdft"
1496 mdct_select="fft"
1497 rdft_select="fft"
1498 mpegaudio_select="mpegaudiodsp"
1499 mpegaudiodsp_select="dct"
1500 mpegvideo_select="videodsp"
1501 mpegvideoenc_select="mpegvideo"
1502
1503 # decoders / encoders
1504 aac_decoder_select="mdct sinewin"
1505 aac_encoder_select="audio_frame_queue mdct sinewin"
1506 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1507 ac3_decoder_select="mdct ac3dsp ac3_parser"
1508 ac3_encoder_select="mdct ac3dsp"
1509 ac3_fixed_encoder_select="mdct ac3dsp"
1510 alac_encoder_select="lpc"
1511 amrnb_decoder_select="lsp"
1512 amrwb_decoder_select="lsp"
1513 atrac1_decoder_select="mdct sinewin"
1514 atrac3_decoder_select="mdct"
1515 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1516 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1517 cavs_decoder_select="golomb h264chroma mpegvideo videodsp"
1518 comfortnoise_encoder_select="lpc"
1519 cook_decoder_select="mdct sinewin"
1520 cscd_decoder_select="lzo"
1521 cscd_decoder_suggest="zlib"
1522 dca_decoder_select="mdct"
1523 dnxhd_encoder_select="aandcttables mpegvideoenc"
1524 dxa_decoder_select="zlib"
1525 eac3_decoder_select="ac3_decoder"
1526 eac3_encoder_select="ac3_encoder"
1527 eamad_decoder_select="aandcttables mpegvideo"
1528 eatgq_decoder_select="aandcttables"
1529 eatqi_decoder_select="aandcttables mpegvideo"
1530 ffv1_decoder_select="golomb rangecoder"
1531 ffv1_encoder_select="rangecoder"
1532 ffvhuff_encoder_select="huffman"
1533 flac_decoder_select="golomb"
1534 flac_encoder_select="golomb lpc"
1535 flashsv_decoder_select="zlib"
1536 flashsv_encoder_select="zlib"
1537 flashsv2_decoder_select="zlib"
1538 flv_decoder_select="h263_decoder"
1539 flv_encoder_select="h263_encoder"
1540 fraps_decoder_select="huffman"
1541 h261_decoder_select="error_resilience mpegvideo"
1542 h261_encoder_select="aandcttables mpegvideoenc"
1543 h263_decoder_select="error_resilience h263_parser mpegvideo"
1544 h263_encoder_select="aandcttables mpegvideoenc"
1545 h263i_decoder_select="h263_decoder"
1546 h263p_encoder_select="h263_encoder"
1547 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1548 huffyuv_encoder_select="huffman"
1549 iac_decoder_select="fft mdct sinewin"
1550 imc_decoder_select="fft mdct sinewin"
1551 jpegls_decoder_select="golomb"
1552 jpegls_encoder_select="golomb"
1553 ljpeg_encoder_select="aandcttables mpegvideoenc"
1554 loco_decoder_select="golomb"
1555 mdec_decoder_select="error_resilience mpegvideo"
1556 mjpeg_encoder_select="aandcttables mpegvideoenc"
1557 mlp_decoder_select="mlp_parser"
1558 mp1_decoder_select="mpegaudio"
1559 mp1float_decoder_select="mpegaudio"
1560 mp2_decoder_select="mpegaudio"
1561 mp2float_decoder_select="mpegaudio"
1562 mp3_decoder_select="mpegaudio"
1563 mp3adu_decoder_select="mpegaudio"
1564 mp3adufloat_decoder_select="mpegaudio"
1565 mp3float_decoder_select="mpegaudio"
1566 mp3on4_decoder_select="mpegaudio"
1567 mp3on4float_decoder_select="mpegaudio"
1568 mpc7_decoder_select="mpegaudiodsp"
1569 mpc8_decoder_select="mpegaudiodsp"
1570 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1571 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1572 mpeg1video_decoder_select="error_resilience mpegvideo"
1573 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1574 mpeg2video_decoder_select="error_resilience mpegvideo"
1575 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1576 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1577 mpeg4_encoder_select="h263_encoder"
1578 msmpeg4v1_decoder_select="h263_decoder"
1579 msmpeg4v1_encoder_select="h263_encoder"
1580 msmpeg4v2_decoder_select="h263_decoder"
1581 msmpeg4v2_encoder_select="h263_encoder"
1582 msmpeg4v3_decoder_select="h263_decoder"
1583 msmpeg4v3_encoder_select="h263_encoder"
1584 mss2_decoder_select="error_resilience vc1_decoder"
1585 nellymoser_decoder_select="mdct sinewin"
1586 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1587 nuv_decoder_select="lzo"
1588 png_decoder_select="zlib"
1589 png_encoder_select="zlib"
1590 qcelp_decoder_select="lsp"
1591 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1592 ra_144_encoder_select="audio_frame_queue lpc"
1593 ralf_decoder_select="golomb"
1594 rv10_decoder_select="error_resilience h263_decoder"
1595 rv10_encoder_select="h263_encoder"
1596 rv20_decoder_select="error_resilience h263_decoder"
1597 rv20_encoder_select="h263_encoder"
1598 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1599 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1600 shorten_decoder_select="golomb"
1601 sipr_decoder_select="lsp"
1602 svq1_decoder_select="mpegvideo"
1603 svq1_encoder_select="aandcttables mpegvideoenc"
1604 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1605 svq3_decoder_suggest="zlib"
1606 theora_decoder_select="vp3_decoder"
1607 tiff_decoder_suggest="zlib"
1608 tiff_encoder_suggest="zlib"
1609 truehd_decoder_select="mlp_decoder"
1610 tscc_decoder_select="zlib"
1611 twinvq_decoder_select="mdct lsp sinewin"
1612 utvideo_encoder_select="huffman"
1613 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1614 vc1image_decoder_select="vc1_decoder"
1615 vorbis_decoder_select="mdct"
1616 vorbis_encoder_select="mdct"
1617 vp3_decoder_select="vp3dsp videodsp"
1618 vp5_decoder_select="h264chroma videodsp vp3dsp"
1619 vp6_decoder_select="h264chroma huffman videodsp vp3dsp"
1620 vp6a_decoder_select="vp6_decoder"
1621 vp6f_decoder_select="vp6_decoder"
1622 vp8_decoder_select="h264pred videodsp"
1623 wmapro_decoder_select="mdct sinewin"
1624 wmav1_decoder_select="mdct sinewin"
1625 wmav1_encoder_select="mdct sinewin"
1626 wmav2_decoder_select="mdct sinewin"
1627 wmav2_encoder_select="mdct sinewin"
1628 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1629 wmv1_decoder_select="h263_decoder"
1630 wmv1_encoder_select="h263_encoder"
1631 wmv2_decoder_select="h263_decoder videodsp"
1632 wmv2_encoder_select="h263_encoder"
1633 wmv3_decoder_select="vc1_decoder"
1634 wmv3image_decoder_select="wmv3_decoder"
1635 zerocodec_decoder_select="zlib"
1636 zlib_decoder_select="zlib"
1637 zlib_encoder_select="zlib"
1638 zmbv_decoder_select="zlib"
1639 zmbv_encoder_select="zlib"
1640
1641 # hardware accelerators
1642 dxva2_deps="dxva2api_h"
1643 vaapi_deps="va_va_h"
1644 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1645 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1646 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1647
1648 h263_vaapi_hwaccel_deps="vaapi"
1649 h263_vaapi_hwaccel_select="h263_decoder"
1650 h263_vdpau_hwaccel_deps="vdpau"
1651 h263_vdpau_hwaccel_select="h263_decoder"
1652 h264_dxva2_hwaccel_deps="dxva2"
1653 h264_dxva2_hwaccel_select="h264_decoder"
1654 h264_vaapi_hwaccel_deps="vaapi"
1655 h264_vaapi_hwaccel_select="h264_decoder"
1656 h264_vda_hwaccel_deps="vda"
1657 h264_vda_hwaccel_select="h264_decoder"
1658 h264_vdpau_decoder_deps="vdpau"
1659 h264_vdpau_decoder_select="h264_decoder"
1660 h264_vdpau_hwaccel_deps="vdpau"
1661 h264_vdpau_hwaccel_select="h264_decoder"
1662 mpeg_vdpau_decoder_deps="vdpau"
1663 mpeg_vdpau_decoder_select="mpegvideo_decoder"
1664 mpeg1_vdpau_decoder_deps="vdpau"
1665 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1666 mpeg1_vdpau_hwaccel_deps="vdpau"
1667 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1668 mpeg2_dxva2_hwaccel_deps="dxva2"
1669 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1670 mpeg2_vaapi_hwaccel_deps="vaapi"
1671 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1672 mpeg2_vdpau_hwaccel_deps="vdpau"
1673 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1674 mpeg4_vaapi_hwaccel_deps="vaapi"
1675 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1676 mpeg4_vdpau_decoder_deps="vdpau"
1677 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1678 mpeg4_vdpau_hwaccel_deps="vdpau"
1679 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1680 vc1_dxva2_hwaccel_deps="dxva2"
1681 vc1_dxva2_hwaccel_select="vc1_decoder"
1682 vc1_vaapi_hwaccel_deps="vaapi"
1683 vc1_vaapi_hwaccel_select="vc1_decoder"
1684 vc1_vdpau_decoder_deps="vdpau"
1685 vc1_vdpau_decoder_select="vc1_decoder"
1686 vc1_vdpau_hwaccel_deps="vdpau"
1687 vc1_vdpau_hwaccel_select="vc1_decoder"
1688 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1689 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1690 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1691 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1692
1693 # parsers
1694 h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1695 mpeg4video_parser_select="error_resilience mpegvideo"
1696 mpegvideo_parser_select="error_resilience mpegvideo"
1697 vc1_parser_select="mpegvideo"
1698
1699 # external libraries
1700 libfaac_encoder_deps="libfaac"
1701 libfaac_encoder_select="audio_frame_queue"
1702 libfdk_aac_encoder_deps="libfdk_aac"
1703 libfdk_aac_encoder_select="audio_frame_queue"
1704 libgsm_decoder_deps="libgsm"
1705 libgsm_encoder_deps="libgsm"
1706 libgsm_ms_decoder_deps="libgsm"
1707 libgsm_ms_encoder_deps="libgsm"
1708 libilbc_decoder_deps="libilbc"
1709 libilbc_encoder_deps="libilbc"
1710 libmp3lame_encoder_deps="libmp3lame"
1711 libmp3lame_encoder_select="audio_frame_queue"
1712 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1713 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1714 libopencore_amrnb_encoder_select="audio_frame_queue"
1715 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1716 libopenjpeg_decoder_deps="libopenjpeg"
1717 libopenjpeg_encoder_deps="libopenjpeg"
1718 libopus_decoder_deps="libopus"
1719 libopus_encoder_deps="libopus"
1720 libopus_encoder_select="audio_frame_queue"
1721 libschroedinger_decoder_deps="libschroedinger"
1722 libschroedinger_encoder_deps="libschroedinger"
1723 libspeex_decoder_deps="libspeex"
1724 libspeex_encoder_deps="libspeex"
1725 libspeex_encoder_select="audio_frame_queue"
1726 libtheora_encoder_deps="libtheora"
1727 libvo_aacenc_encoder_deps="libvo_aacenc"
1728 libvo_aacenc_encoder_select="audio_frame_queue"
1729 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1730 libvorbis_encoder_deps="libvorbis"
1731 libvorbis_encoder_select="audio_frame_queue"
1732 libvpx_vp8_decoder_deps="libvpx"
1733 libvpx_vp8_encoder_deps="libvpx"
1734 libvpx_vp9_decoder_deps="libvpx"
1735 libvpx_vp9_encoder_deps="libvpx"
1736 libx264_encoder_deps="libx264"
1737 libxavs_encoder_deps="libxavs"
1738 libxvid_encoder_deps="libxvid"
1739
1740 # demuxers / muxers
1741 ac3_demuxer_select="ac3_parser"
1742 asf_stream_muxer_select="asf_muxer"
1743 avisynth_demuxer_deps="avisynth"
1744 dirac_demuxer_select="dirac_parser"
1745 eac3_demuxer_select="ac3_parser"
1746 flac_demuxer_select="flac_parser"
1747 ipod_muxer_select="mov_muxer"
1748 ismv_muxer_select="mov_muxer"
1749 matroska_audio_muxer_select="matroska_muxer"
1750 matroska_demuxer_suggest="bzlib lzo zlib"
1751 mov_demuxer_suggest="zlib"
1752 mov_muxer_select="rtpenc_chain"
1753 mp3_demuxer_select="mpegaudio_parser"
1754 mp4_muxer_select="mov_muxer"
1755 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1756 mpegtsraw_demuxer_select="mpegts_demuxer"
1757 mxf_d10_muxer_select="mxf_muxer"
1758 ogg_demuxer_select="golomb"
1759 psp_muxer_select="mov_muxer"
1760 rtp_demuxer_select="sdp_demuxer"
1761 rtp_muxer_select="mpegvideo"
1762 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1763 rtsp_demuxer_select="http_protocol rtpdec"
1764 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1765 sap_demuxer_select="sdp_demuxer"
1766 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1767 sdp_demuxer_select="rtpdec"
1768 smoothstreaming_muxer_select="ismv_muxer"
1769 spdif_muxer_select="aac_parser"
1770 tak_demuxer_select="tak_parser"
1771 tg2_muxer_select="mov_muxer"
1772 tgp_muxer_select="mov_muxer"
1773 w64_demuxer_deps="wav_demuxer"
1774
1775 # indevs / outdevs
1776 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1777 alsa_outdev_deps="alsa_asoundlib_h"
1778 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1779 dv1394_indev_deps="dv1394 dv_demuxer"
1780 fbdev_indev_deps="linux_fb_h"
1781 jack_indev_deps="jack_jack_h"
1782 libcdio_indev_deps="libcdio"
1783 libdc1394_indev_deps="libdc1394"
1784 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1785 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1786 pulse_indev_deps="libpulse"
1787 sndio_indev_deps="sndio_h"
1788 sndio_outdev_deps="sndio_h"
1789 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1790 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1791 vfwcap_indev_extralibs="-lavicap32"
1792 x11grab_indev_deps="x11grab XShmCreateImage"
1793
1794 # protocols
1795 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1796 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1797 ffrtmpcrypt_protocol_select="tcp_protocol"
1798 ffrtmphttp_protocol_deps="!librtmp_protocol"
1799 ffrtmphttp_protocol_select="http_protocol"
1800 gopher_protocol_select="network"
1801 httpproxy_protocol_select="tcp_protocol"
1802 http_protocol_select="tcp_protocol"
1803 https_protocol_select="tls_protocol"
1804 librtmp_protocol_deps="librtmp"
1805 librtmpe_protocol_deps="librtmp"
1806 librtmps_protocol_deps="librtmp"
1807 librtmpt_protocol_deps="librtmp"
1808 librtmpte_protocol_deps="librtmp"
1809 mmsh_protocol_select="http_protocol"
1810 mmst_protocol_select="network"
1811 rtmp_protocol_deps="!librtmp_protocol"
1812 rtmp_protocol_select="tcp_protocol"
1813 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1814 rtmps_protocol_deps="!librtmp_protocol"
1815 rtmps_protocol_select="tls_protocol"
1816 rtmpt_protocol_select="ffrtmphttp_protocol"
1817 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1818 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1819 rtp_protocol_select="udp_protocol"
1820 sctp_protocol_deps="struct_sctp_event_subscribe"
1821 sctp_protocol_select="network"
1822 srtp_protocol_select="rtp_protocol"
1823 tcp_protocol_select="network"
1824 tls_protocol_deps_any="openssl gnutls"
1825 tls_protocol_select="tcp_protocol"
1826 udp_protocol_select="network"
1827
1828 # filters
1829 blackframe_filter_deps="gpl"
1830 boxblur_filter_deps="gpl"
1831 cropdetect_filter_deps="gpl"
1832 delogo_filter_deps="gpl"
1833 drawtext_filter_deps="libfreetype"
1834 frei0r_filter_deps="frei0r dlopen strtok_r"
1835 frei0r_filter_extralibs='$ldl'
1836 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1837 frei0r_src_filter_extralibs='$ldl'
1838 hqdn3d_filter_deps="gpl"
1839 resample_filter_deps="avresample"
1840 ocv_filter_deps="libopencv"
1841 scale_filter_deps="swscale"
1842 yadif_filter_deps="gpl"
1843
1844 # libraries
1845 avcodec_deps="avutil"
1846 avdevice_deps="avutil avcodec avformat"
1847 avfilter_deps="avutil"
1848 avformat_deps="avutil avcodec"
1849 avresample_deps="avutil"
1850 swscale_deps="avutil"
1851
1852 # programs
1853 avconv_deps="avcodec avfilter avformat avresample swscale"
1854 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1855                fps_filter null_filter resample_filter scale_filter
1856                setpts_filter"
1857 avplay_deps="avcodec avformat avresample swscale sdl"
1858 avplay_select="rdft"
1859 avprobe_deps="avcodec avformat"
1860 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1861 avserver_extralibs='$ldl'
1862
1863 doc_deps="texi2html"
1864
1865 # default parameters
1866
1867 logfile="config.log"
1868
1869 # installation paths
1870 prefix_default="/usr/local"
1871 bindir_default='${prefix}/bin'
1872 datadir_default='${prefix}/share/avconv'
1873 incdir_default='${prefix}/include'
1874 libdir_default='${prefix}/lib'
1875 mandir_default='${prefix}/share/man'
1876 shlibdir_default="$libdir_default"
1877
1878 # toolchain
1879 ar_default="ar"
1880 cc_default="gcc"
1881 host_cc_default="gcc"
1882 cp_f="cp -f"
1883 ln_s="ln -s -f"
1884 nm_default="nm -g"
1885 objformat="elf"
1886 pkg_config_default=pkg-config
1887 ranlib="ranlib"
1888 yasmexe="yasm"
1889
1890 nogas=":"
1891
1892 # machine
1893 arch_default=$(uname -m)
1894 cpu="generic"
1895
1896 # OS
1897 target_os_default=$(tolower $(uname -s))
1898 host_os=$target_os_default
1899
1900 # configurable options
1901 enable $LIBRARY_LIST $PROGRAM_LIST
1902
1903 enable asm
1904 enable debug
1905 enable doc
1906 enable optimizations
1907 enable safe_bitstream_reader
1908 enable static
1909 enable swscale_alpha
1910
1911 # By default, enable only those hwaccels that have no external dependencies.
1912 enable dxva2 vdpau
1913
1914 # build settings
1915 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1916 AVSERVERLDFLAGS=-Wl,-E
1917 LIBPREF="lib"
1918 LIBSUF=".a"
1919 FULLNAME='$(NAME)$(BUILDSUF)'
1920 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1921 SLIBPREF="lib"
1922 SLIBSUF=".so"
1923 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1924 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1925 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1926 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1927 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1928 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1929
1930 asflags_filter=echo
1931 cflags_filter=echo
1932 ldflags_filter=echo
1933
1934 AS_C='-c'
1935 AS_O='-o $@'
1936 CC_C='-c'
1937 CC_E='-E -o $@'
1938 CC_O='-o $@'
1939 LD_O='-o $@'
1940 LD_LIB='-l%'
1941 LD_PATH='-L'
1942 HOSTCC_C='-c'
1943 HOSTCC_O='-o $@'
1944 HOSTLD_O='-o $@'
1945
1946 host_cflags='-O3 -g'
1947 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1948 host_libs='-lm'
1949 host_cflags_filter=echo
1950 host_ldflags_filter=echo
1951
1952 target_path='$(CURDIR)'
1953
1954 # since the object filename is not given with the -MM flag, the compiler
1955 # is only able to print the basename, and we must add the path ourselves
1956 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1957 DEPFLAGS='-MM'
1958
1959 # find source path
1960 if test -f configure; then
1961     source_path=.
1962 else
1963     source_path=$(cd $(dirname "$0"); pwd)
1964     echo "$source_path" | grep -q '[[:blank:]]' &&
1965         die "Out of tree builds are impossible with whitespace in source path."
1966     test -e "$source_path/config.h" &&
1967         die "Out of tree builds are impossible with config.h in source dir."
1968 fi
1969
1970 for v in "$@"; do
1971     r=${v#*=}
1972     l=${v%"$r"}
1973     r=$(sh_quote "$r")
1974     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1975 done
1976
1977 find_things(){
1978     thing=$1
1979     pattern=$2
1980     file=$source_path/$3
1981     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1982 }
1983
1984 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1985 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1986 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1987 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1988 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1989 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1990 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1991 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1992 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1993 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1994 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1995
1996 ALL_COMPONENTS="
1997     $BSF_LIST
1998     $DECODER_LIST
1999     $DEMUXER_LIST
2000     $ENCODER_LIST
2001     $FILTER_LIST
2002     $HWACCEL_LIST
2003     $INDEV_LIST
2004     $MUXER_LIST
2005     $OUTDEV_LIST
2006     $PARSER_LIST
2007     $PROTOCOL_LIST
2008 "
2009
2010 for n in $COMPONENT_LIST; do
2011     v=$(toupper ${n%s})_LIST
2012     eval enable \$$v
2013     eval ${n}_if_any="\$$v"
2014 done
2015
2016 enable $ARCH_EXT_LIST
2017
2018 die_unknown(){
2019     echo "Unknown option \"$1\"."
2020     echo "See $0 --help for available options."
2021     exit 1
2022 }
2023
2024 print_3_columns() {
2025     cat | tr ' ' '\n' | sort | pr -r -3 -t
2026 }
2027
2028 show_list() {
2029     suffix=_$1
2030     shift
2031     echo $* | sed s/$suffix//g | print_3_columns
2032     exit 0
2033 }
2034
2035 rand_list(){
2036     IFS=', '
2037     set -- $*
2038     unset IFS
2039     for thing; do
2040         comp=${thing%:*}
2041         prob=${thing#$comp}
2042         prob=${prob#:}
2043         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2044         echo "prob ${prob:-0.5}"
2045         printf '%s\n' $comp
2046     done
2047 }
2048
2049 do_random(){
2050     action=$1
2051     shift
2052     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2053     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2054 }
2055
2056 for opt do
2057     optval="${opt#*=}"
2058     case "$opt" in
2059         --extra-ldflags=*)
2060             add_ldflags $optval
2061         ;;
2062         --extra-libs=*)
2063             add_extralibs $optval
2064         ;;
2065         --disable-devices)
2066             disable $INDEV_LIST $OUTDEV_LIST
2067         ;;
2068         --enable-debug=*)
2069             debuglevel="$optval"
2070         ;;
2071         --disable-programs)
2072             disable $PROGRAM_LIST
2073         ;;
2074         --disable-everything)
2075             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2076         ;;
2077         --disable-all)
2078             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2079             disable $LIBRARY_LIST $PROGRAM_LIST doc
2080         ;;
2081         --enable-random|--disable-random)
2082             action=${opt%%-random}
2083             do_random ${action#--} $COMPONENT_LIST
2084         ;;
2085         --enable-random=*|--disable-random=*)
2086             action=${opt%%-random=*}
2087             do_random ${action#--} $optval
2088         ;;
2089         --enable-*=*|--disable-*=*)
2090             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2091             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2092             eval list=\$$(toupper $thing)_LIST
2093             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2094             $action $(filter "$name" $list)
2095         ;;
2096         --enable-?*|--disable-?*)
2097             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2098             if is_in $option $COMPONENT_LIST; then
2099                 test $action = disable && action=unset
2100                 eval $action \$$(toupper ${option%s})_LIST
2101             elif is_in $option $CMDLINE_SELECT; then
2102                 $action $option
2103             else
2104                 die_unknown $opt
2105             fi
2106         ;;
2107         --list-*)
2108             NAME="${opt#--list-}"
2109             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2110             NAME=${NAME%s}
2111             eval show_list $NAME \$$(toupper $NAME)_LIST
2112         ;;
2113         --help|-h) show_help
2114         ;;
2115         *)
2116             optname="${opt%%=*}"
2117             optname="${optname#--}"
2118             optname=$(echo "$optname" | sed 's/-/_/g')
2119             if is_in $optname $CMDLINE_SET; then
2120                 eval $optname='$optval'
2121             elif is_in $optname $CMDLINE_APPEND; then
2122                 append $optname "$optval"
2123             else
2124                 die_unknown $opt
2125             fi
2126         ;;
2127     esac
2128 done
2129
2130 disabled logging && logfile=/dev/null
2131
2132 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2133 set >> $logfile
2134
2135 test -n "$cross_prefix" && enable cross_compile
2136
2137 if enabled cross_compile; then
2138     test -n "$arch" && test -n "$target_os" ||
2139         die "Must specify target arch and OS when cross-compiling"
2140 fi
2141
2142 ar_default="${cross_prefix}${ar_default}"
2143 cc_default="${cross_prefix}${cc_default}"
2144 nm_default="${cross_prefix}${nm_default}"
2145 pkg_config_default="${cross_prefix}${pkg_config_default}"
2146 ranlib="${cross_prefix}${ranlib}"
2147
2148 sysinclude_default="${sysroot}/usr/include"
2149
2150 case "$toolchain" in
2151     clang-asan)
2152         cc_default="clang"
2153         add_cflags  -faddress-sanitizer
2154         add_ldflags -faddress-sanitizer
2155     ;;
2156     clang-tsan)
2157         cc_default="clang"
2158         add_cflags  -fthread-sanitizer
2159         add_ldflags -fthread-sanitizer
2160     ;;
2161     msvc)
2162         cc_default="c99wrap cl"
2163         ld_default="c99wrap link"
2164         nm_default="dumpbin -symbols"
2165         ar_default="lib"
2166         target_os_default="win32"
2167     ;;
2168     ?*)
2169         die "Unknown toolchain $toolchain"
2170     ;;
2171 esac
2172
2173 set_default arch cc pkg_config sysinclude target_os
2174 enabled cross_compile || host_cc_default=$cc
2175 set_default host_cc
2176
2177 if ! $pkg_config --version >/dev/null 2>&1; then
2178     warn "$pkg_config not found, library detection may fail."
2179     pkg_config=false
2180 fi
2181
2182 exesuf() {
2183     case $1 in
2184         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2185     esac
2186 }
2187
2188 EXESUF=$(exesuf $target_os)
2189 HOSTEXESUF=$(exesuf $host_os)
2190
2191 # set temporary file name
2192 : ${TMPDIR:=$TEMPDIR}
2193 : ${TMPDIR:=$TMP}
2194 : ${TMPDIR:=/tmp}
2195
2196 if ! check_cmd mktemp -u XXXXXX; then
2197     # simple replacement for missing mktemp
2198     # NOT SAFE FOR GENERAL USE
2199     mktemp(){
2200         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2201     }
2202 fi
2203
2204 tmpfile(){
2205     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2206         (set -C; exec > $tmp) 2>/dev/null ||
2207         die "Unable to create temporary file in $TMPDIR."
2208     append TMPFILES $tmp
2209     eval $1=$tmp
2210 }
2211
2212 trap 'rm -f -- $TMPFILES' EXIT
2213
2214 tmpfile TMPASM .asm
2215 tmpfile TMPC   .c
2216 tmpfile TMPE   $EXESUF
2217 tmpfile TMPH   .h
2218 tmpfile TMPO   .o
2219 tmpfile TMPS   .S
2220 tmpfile TMPSH  .sh
2221 tmpfile TMPV   .ver
2222
2223 unset -f mktemp
2224
2225 chmod +x $TMPE
2226
2227 # make sure we can execute files in $TMPDIR
2228 cat > $TMPSH 2>> $logfile <<EOF
2229 #! /bin/sh
2230 EOF
2231 chmod +x $TMPSH >> $logfile 2>&1
2232 if ! $TMPSH >> $logfile 2>&1; then
2233     cat <<EOF
2234 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2235 variable to another directory and make sure that it is not mounted noexec.
2236 EOF
2237     die "Sanity test failed."
2238 fi
2239
2240 ccc_flags(){
2241     for flag; do
2242         case $flag in
2243             -std=c99)           echo -c99                       ;;
2244             -mcpu=*)            echo -arch ${flag#*=}           ;;
2245             -mieee)             echo -ieee                      ;;
2246             -O*|-fast)          echo $flag                      ;;
2247             -fno-math-errno)    echo -assume nomath_errno       ;;
2248             -g)                 echo -g3                        ;;
2249             -Wall)              echo -msg_enable level2         ;;
2250             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2251             -Wl,*)              echo $flag                      ;;
2252             -f*|-W*)                                            ;;
2253             *)                  echo $flag                      ;;
2254         esac
2255    done
2256 }
2257
2258 msvc_flags(){
2259     for flag; do
2260         case $flag in
2261             -fomit-frame-pointer) echo -Oy ;;
2262             -g)                   echo -Z7 ;;
2263             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2264                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2265                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2266                                        -wd4996 -wd4273 ;;
2267             -std=c99)             ;;
2268             -fno-math-errno)      ;;
2269             -fno-common)          ;;
2270             -fno-signed-zeros)    ;;
2271             -fPIC)                ;;
2272             -lz)                  echo zlib.lib ;;
2273             -lavifil32)           echo vfw32.lib ;;
2274             -lavicap32)           echo vfw32.lib user32.lib ;;
2275             -l*)                  echo ${flag#-l}.lib ;;
2276             *)                    echo $flag ;;
2277         esac
2278     done
2279 }
2280
2281 pgi_flags(){
2282     for flag; do
2283         case $flag in
2284             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2285             -fomit-frame-pointer) echo -Mnoframe ;;
2286             -g)                   echo -gopt ;;
2287             *)                    echo $flag ;;
2288         esac
2289     done
2290 }
2291
2292 suncc_flags(){
2293     for flag; do
2294         case $flag in
2295             -march=*|-mcpu=*)
2296                 case "${flag#*=}" in
2297                     native)                   echo -xtarget=native       ;;
2298                     v9|niagara)               echo -xarch=sparc          ;;
2299                     ultrasparc)               echo -xarch=sparcvis       ;;
2300                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2301                     i586|pentium)             echo -xchip=pentium        ;;
2302                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2303                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2304                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2305                     pentium4*)          echo -xtarget=pentium4           ;;
2306                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2307                     *-sse3)             echo -xarch=sse3                 ;;
2308                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2309                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2310                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2311                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2312                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2313                     k8|opteron|athlon64|athlon-fx)
2314                                               echo -xarch=sse2a          ;;
2315                     athlon*)                  echo -xarch=pentium_proa   ;;
2316                 esac
2317                 ;;
2318             -std=c99)             echo -xc99              ;;
2319             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2320             -fPIC)                echo -KPIC -xcode=pic32 ;;
2321             -W*,*)                echo $flag              ;;
2322             -f*-*|-W*|-mimpure-text)                      ;;
2323             -shared)              echo -G                 ;;
2324             *)                    echo $flag              ;;
2325         esac
2326     done
2327 }
2328
2329 tms470_flags(){
2330     for flag; do
2331         case $flag in
2332             -march=*|-mcpu=*)
2333                 case "${flag#*=}" in
2334                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2335                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2336                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2337                     armv6*|arm11*)          echo -mv=6   ;;
2338                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2339                                             echo -mv=5e  ;;
2340                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2341                 esac
2342                 ;;
2343             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2344             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2345             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2346             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2347             -msoft-float)   echo --float_support=vfplib       ;;
2348             -O[0-3]|-mf=*)  echo $flag                        ;;
2349             -g)             echo -g -mn                       ;;
2350             -pds=*)         echo $flag                        ;;
2351             -D*|-I*)        echo $flag                        ;;
2352             --gcc|--abi=*)  echo $flag                        ;;
2353             -me)            echo $flag                        ;;
2354         esac
2355     done
2356 }
2357
2358 probe_cc(){
2359     pfx=$1
2360     _cc=$2
2361
2362     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2363     unset _ld_o _ldflags _ld_lib _ld_path
2364     unset _depflags _DEPCMD _DEPFLAGS
2365     _flags_filter=echo
2366
2367     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2368         _type=llvm_gcc
2369         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2370         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2372         _cflags_speed='-O3'
2373         _cflags_size='-Os'
2374     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2375         _type=gcc
2376         gcc_version=$($_cc --version | head -n1)
2377         gcc_basever=$($_cc -dumpversion)
2378         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2379         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2380         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2381         if ! $_cc -dumpversion | grep -q '^2\.'; then
2382             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2383         fi
2384         _cflags_speed='-O3'
2385         _cflags_size='-Os'
2386     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2387         _type=icc
2388         _ident=$($_cc --version | head -n1)
2389         _depflags='-MMD'
2390         _cflags_speed='-O3'
2391         _cflags_size='-Os'
2392         _cflags_noopt='-O1'
2393     elif $_cc -v 2>&1 | grep -q xlc; then
2394         _type=xlc
2395         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2396         _cflags_speed='-O5'
2397         _cflags_size='-O5 -qcompact'
2398     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2399         _type=ccc
2400         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2401         _DEPFLAGS='-M'
2402         _cflags_speed='-fast'
2403         _cflags_size='-O1'
2404         _flags_filter=ccc_flags
2405     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2406         test -d "$sysroot" || die "No valid sysroot specified."
2407         _type=armcc
2408         _ident=$($_cc --vsn | head -n1)
2409         armcc_conf="$PWD/armcc.conf"
2410         $_cc --arm_linux_configure                 \
2411              --arm_linux_config_file="$armcc_conf" \
2412              --configure_sysroot="$sysroot"        \
2413              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2414              die "Error creating armcc configuration file."
2415         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2416         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2417         as_default="${cross_prefix}gcc"
2418         _depflags='-MMD'
2419         _cflags_speed='-O3'
2420         _cflags_size='-Os'
2421     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2422         _type=tms470
2423         _ident=$($_cc -version | head -n1 | tr -s ' ')
2424         _flags='--gcc --abi=eabi -me'
2425         _cc_e='-ppl -fe=$@'
2426         _cc_o='-fe=$@'
2427         _depflags='-ppa -ppd=$(@:.o=.d)'
2428         _cflags_speed='-O3 -mf=5'
2429         _cflags_size='-O3 -mf=2'
2430         _flags_filter=tms470_flags
2431     elif $_cc -v 2>&1 | grep -q clang; then
2432         _type=clang
2433         _ident=$($_cc --version | head -n1)
2434         _depflags='-MMD'
2435         _cflags_speed='-O3'
2436         _cflags_size='-Os'
2437     elif $_cc -V 2>&1 | grep -q Sun; then
2438         _type=suncc
2439         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2440         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2441         _DEPFLAGS='-xM1 -xc99'
2442         _ldflags='-std=c99'
2443         _cflags_speed='-O5'
2444         _cflags_size='-O5 -xspace'
2445         _flags_filter=suncc_flags
2446     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2447         _type=pathscale
2448         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2449         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2450         _cflags_speed='-O2'
2451         _cflags_size='-Os'
2452         _flags_filter='filter_out -Wdisabled-optimization'
2453     elif $_cc -v 2>&1 | grep -q Open64; then
2454         _type=open64
2455         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2456         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2457         _cflags_speed='-O2'
2458         _cflags_size='-Os'
2459         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2460     elif $_cc -V 2>&1 | grep -q Portland; then
2461         _type=pgi
2462         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2463         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2464         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2465         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2466         _cflags_noopt="-O1"
2467         _flags_filter=pgi_flags
2468     elif $_cc 2>&1 | grep -q Microsoft; then
2469         _type=msvc
2470         _ident=$($cc 2>&1 | head -n1)
2471         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2472         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2473         _cflags_speed="-O2"
2474         _cflags_size="-O1"
2475         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2476         if $_cc 2>&1 | grep -q Linker; then
2477             _ld_o='-out $@'
2478         else
2479             _ld_o='-Fe$@'
2480         fi
2481         _cc_o='-Fo $@'
2482         _cc_e='-P -Fi $@'
2483         _flags_filter=msvc_flags
2484         _ld_lib='lib%.a'
2485         _ld_path='-libpath:'
2486         _flags='-nologo'
2487         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2488         if [ $pfx = hostcc ]; then
2489             append _cflags -Dsnprintf=_snprintf
2490         fi
2491     fi
2492
2493     eval ${pfx}_type=\$_type
2494     eval ${pfx}_ident=\$_ident
2495 }
2496
2497 set_ccvars(){
2498     eval ${1}_C=\${_cc_c-\${${1}_C}}
2499     eval ${1}_E=\${_cc_e-\${${1}_E}}
2500     eval ${1}_O=\${_cc_o-\${${1}_O}}
2501
2502     if [ -n "$_depflags" ]; then
2503         eval ${1}_DEPFLAGS=\$_depflags
2504     else
2505         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2506         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2507         eval DEP${1}FLAGS=\$_flags
2508     fi
2509 }
2510
2511 probe_cc cc "$cc"
2512 cflags_filter=$_flags_filter
2513 cflags_speed=$_cflags_speed
2514 cflags_size=$_cflags_size
2515 cflags_noopt=$_cflags_noopt
2516 add_cflags $_flags $_cflags
2517 cc_ldflags=$_ldflags
2518 set_ccvars CC
2519
2520 probe_cc hostcc "$host_cc"
2521 host_cflags_filter=$_flags_filter
2522 add_host_cflags  $_flags $_cflags
2523 set_ccvars HOSTCC
2524
2525 test -n "$cc_type" && enable $cc_type ||
2526     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2527
2528 : ${as_default:=$cc}
2529 : ${dep_cc_default:=$cc}
2530 : ${ld_default:=$cc}
2531 : ${host_ld_default:=$host_cc}
2532 set_default ar as dep_cc ld host_ld
2533
2534 probe_cc as "$as"
2535 asflags_filter=$_flags_filter
2536 add_asflags $_flags $_cflags
2537 set_ccvars AS
2538
2539 probe_cc ld "$ld"
2540 ldflags_filter=$_flags_filter
2541 add_ldflags $_flags $_ldflags
2542 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2543 LD_O=${_ld_o-$LD_O}
2544 LD_LIB=${_ld_lib-$LD_LIB}
2545 LD_PATH=${_ld_path-$LD_PATH}
2546
2547 probe_cc hostld "$host_ld"
2548 host_ldflags_filter=$_flags_filter
2549 add_host_ldflags $_flags $_ldflags
2550 HOSTLD_O=${_ld_o-$HOSTLD_O}
2551
2552 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2553     probe_cc depcc "$dep_cc"
2554     CCDEP=${_DEPCMD:-$DEPCMD}
2555     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2556     DEPCCFLAGS=$_flags
2557 fi
2558
2559 if $ar 2>&1 | grep -q Microsoft; then
2560     arflags="-nologo"
2561     ar_o='-out:$@'
2562 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2563     arflags="rq"
2564     ar_o='$@'
2565 else
2566     arflags="rc"
2567     ar_o='$@'
2568 fi
2569
2570 add_cflags $extra_cflags
2571 add_asflags $extra_cflags
2572
2573 if test -n "$sysroot"; then
2574     case "$cc_type" in
2575         gcc|llvm_gcc|clang)
2576             add_cppflags --sysroot="$sysroot"
2577             add_ldflags --sysroot="$sysroot"
2578         ;;
2579         tms470)
2580             add_cppflags -I"$sysinclude"
2581             add_ldflags  --sysroot="$sysroot"
2582         ;;
2583     esac
2584 fi
2585
2586 if test "$cpu" = host; then
2587     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2588
2589     case "$cc_type" in
2590         gcc|llvm_gcc)
2591             check_native(){
2592                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2593                 sed -n "/cc1.*$1=/{
2594                             s/.*$1=\\([^ ]*\\).*/\\1/
2595                             p
2596                             q
2597                         }" $TMPE
2598             }
2599             cpu=$(check_native -march || check_native -mcpu)
2600         ;;
2601     esac
2602
2603     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2604 fi
2605
2606 # Deal with common $arch aliases
2607 case "$arch" in
2608     aarch64|arm64)
2609         arch="aarch64"
2610     ;;
2611     arm*)
2612         arch="arm"
2613     ;;
2614     mips*|IP*)
2615         arch="mips"
2616     ;;
2617     parisc*|hppa*)
2618         arch="parisc"
2619     ;;
2620     "Power Macintosh"|ppc*|powerpc*)
2621         arch="ppc"
2622     ;;
2623     s390|s390x)
2624         arch="s390"
2625     ;;
2626     sh4|sh)
2627         arch="sh4"
2628     ;;
2629     sun4u|sparc*)
2630         arch="sparc"
2631     ;;
2632     tilegx|tile-gx)
2633         arch="tilegx"
2634     ;;
2635     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2636         arch="x86"
2637     ;;
2638 esac
2639
2640 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2641 enable $arch
2642
2643 # Add processor-specific flags
2644 if enabled aarch64; then
2645
2646     case $cpu in
2647         armv*)
2648             cpuflags="-march=$cpu"
2649         ;;
2650         *)
2651             cpuflags="-mcpu=$cpu"
2652         ;;
2653     esac
2654
2655 elif enabled alpha; then
2656
2657     cpuflags="-mcpu=$cpu"
2658
2659 elif enabled arm; then
2660
2661     check_arm_arch() {
2662         check_cpp_condition stddef.h \
2663             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2664             $cpuflags
2665     }
2666
2667     probe_arm_arch() {
2668         if   check_arm_arch 4;        then echo armv4;
2669         elif check_arm_arch 4T;       then echo armv4t;
2670         elif check_arm_arch 5;        then echo armv5;
2671         elif check_arm_arch 5E;       then echo armv5e;
2672         elif check_arm_arch 5T;       then echo armv5t;
2673         elif check_arm_arch 5TE;      then echo armv5te;
2674         elif check_arm_arch 5TEJ;     then echo armv5te;
2675         elif check_arm_arch 6;        then echo armv6;
2676         elif check_arm_arch 6J;       then echo armv6j;
2677         elif check_arm_arch 6K;       then echo armv6k;
2678         elif check_arm_arch 6Z;       then echo armv6z;
2679         elif check_arm_arch 6ZK;      then echo armv6zk;
2680         elif check_arm_arch 6T2;      then echo armv6t2;
2681         elif check_arm_arch 7;        then echo armv7;
2682         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2683         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2684         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2685         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2686         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2687         fi
2688     }
2689
2690     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2691
2692     case $cpu in
2693         armv*)
2694             cpuflags="-march=$cpu"
2695             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2696         ;;
2697         *)
2698             cpuflags="-mcpu=$cpu"
2699             case $cpu in
2700                 cortex-a*)                               subarch=armv7a  ;;
2701                 cortex-r*)                               subarch=armv7r  ;;
2702                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2703                 arm11*)                                  subarch=armv6   ;;
2704                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2705                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2706                 *)                             subarch=$(probe_arm_arch) ;;
2707             esac
2708         ;;
2709     esac
2710
2711     case "$subarch" in
2712         armv5t*)    enable fast_clz                ;;
2713         armv[6-8]*) enable fast_clz fast_unaligned ;;
2714     esac
2715
2716 elif enabled avr32; then
2717
2718     case $cpu in
2719         ap7[02]0[0-2])
2720             subarch="avr32_ap"
2721             cpuflags="-mpart=$cpu"
2722         ;;
2723         ap)
2724             subarch="avr32_ap"
2725             cpuflags="-march=$cpu"
2726         ;;
2727         uc3[ab]*)
2728             subarch="avr32_uc"
2729             cpuflags="-mcpu=$cpu"
2730         ;;
2731         uc)
2732             subarch="avr32_uc"
2733             cpuflags="-march=$cpu"
2734         ;;
2735     esac
2736
2737 elif enabled bfin; then
2738
2739     cpuflags="-mcpu=$cpu"
2740
2741 elif enabled mips; then
2742
2743     cpuflags="-march=$cpu"
2744
2745 elif enabled ppc; then
2746
2747     case $(tolower $cpu) in
2748         601|ppc601|powerpc601)
2749             cpuflags="-mcpu=601"
2750             disable altivec
2751         ;;
2752         603*|ppc603*|powerpc603*)
2753             cpuflags="-mcpu=603"
2754             disable altivec
2755         ;;
2756         604*|ppc604*|powerpc604*)
2757             cpuflags="-mcpu=604"
2758             disable altivec
2759         ;;
2760         g3|75*|ppc75*|powerpc75*)
2761             cpuflags="-mcpu=750"
2762             disable altivec
2763         ;;
2764         g4|745*|ppc745*|powerpc745*)
2765             cpuflags="-mcpu=7450"
2766         ;;
2767         74*|ppc74*|powerpc74*)
2768             cpuflags="-mcpu=7400"
2769         ;;
2770         g5|970|ppc970|powerpc970)
2771             cpuflags="-mcpu=970"
2772         ;;
2773         power[3-7]*)
2774             cpuflags="-mcpu=$cpu"
2775         ;;
2776         cell)
2777             cpuflags="-mcpu=cell"
2778             enable ldbrx
2779         ;;
2780         e500mc)
2781             cpuflags="-mcpu=e500mc"
2782             disable altivec
2783         ;;
2784         e500v2)
2785             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2786             disable altivec
2787         ;;
2788         e500)
2789             cpuflags="-mcpu=8540 -mhard-float"
2790             disable altivec
2791         ;;
2792     esac
2793
2794 elif enabled sparc; then
2795
2796     case $cpu in
2797         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2798             cpuflags="-mcpu=$cpu"
2799             disable vis
2800         ;;
2801         ultrasparc*|niagara[234])
2802             cpuflags="-mcpu=$cpu"
2803         ;;
2804     esac
2805
2806 elif enabled x86; then
2807
2808     case $cpu in
2809         i[345]86|pentium)
2810             cpuflags="-march=$cpu"
2811             disable mmx
2812         ;;
2813         # targets that do NOT support conditional mov (cmov)
2814         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2815             cpuflags="-march=$cpu"
2816             disable cmov
2817         ;;
2818         # targets that do support conditional mov (cmov)
2819         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2820             cpuflags="-march=$cpu"
2821             enable cmov
2822             enable fast_cmov
2823         ;;
2824         # targets that do support conditional mov but on which it's slow
2825         pentium4|pentium4m|prescott|nocona)
2826             cpuflags="-march=$cpu"
2827             enable cmov
2828             disable fast_cmov
2829         ;;
2830     esac
2831
2832 fi
2833
2834 if [ "$cpu" != generic ]; then
2835     add_cflags  $cpuflags
2836     add_asflags $cpuflags
2837 fi
2838
2839 # compiler sanity check
2840 check_exec <<EOF
2841 int main(void){ return 0; }
2842 EOF
2843 if test "$?" != 0; then
2844     echo "$cc is unable to create an executable file."
2845     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2846         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2847         echo "Only do this if you know what cross compiling means."
2848     fi
2849     die "C compiler test failed."
2850 fi
2851
2852 add_cppflags -D_ISOC99_SOURCE
2853 check_cflags -std=c99
2854 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2855 #include <stdlib.h>
2856 EOF
2857 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2858 #include <stdlib.h>
2859 EOF
2860
2861 check_host_cflags -std=c99
2862 check_host_cflags -Wall
2863
2864 check_64bit(){
2865     arch32=$1
2866     arch64=$2
2867     expr=$3
2868     check_code cc "" "int test[2*($expr) - 1]" &&
2869         subarch=$arch64 || subarch=$arch32
2870 }
2871
2872 case "$arch" in
2873     aarch64|alpha|ia64)
2874         spic=$shared
2875     ;;
2876     mips)
2877         check_64bit mips mips64 '_MIPS_SIM > 1'
2878         spic=$shared
2879     ;;
2880     parisc)
2881         check_64bit parisc parisc64 'sizeof(void *) > 4'
2882         spic=$shared
2883     ;;
2884     ppc)
2885         check_64bit ppc ppc64 'sizeof(void *) > 4'
2886         spic=$shared
2887     ;;
2888     sparc)
2889         check_64bit sparc sparc64 'sizeof(void *) > 4'
2890         spic=$shared
2891     ;;
2892     x86)
2893         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2894         if test "$subarch" = "x86_64"; then
2895             spic=$shared
2896         fi
2897     ;;
2898 esac
2899
2900 enable $subarch
2901 enabled spic && enable pic
2902
2903 # OS specific
2904 case $target_os in
2905     haiku)
2906         prefix_default="/boot/common"
2907         network_extralibs="-lnetwork"
2908         host_libs=
2909         ;;
2910     sunos)
2911         AVSERVERLDFLAGS=""
2912         SHFLAGS='-shared -Wl,-h,$$(@F)'
2913         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2914         network_extralibs="-lsocket -lnsl"
2915         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2916         # When using suncc to build, the Solaris linker will mark
2917         # an executable with each instruction set encountered by
2918         # the Solaris assembler.  As our libraries contain their own
2919         # guards for processor-specific code, instead suppress
2920         # generation of the HWCAPS ELF section on Solaris x86 only.
2921         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2922         nm_default='nm -P -g'
2923         ;;
2924     netbsd)
2925         disable symver
2926         oss_indev_extralibs="-lossaudio"
2927         oss_outdev_extralibs="-lossaudio"
2928         ;;
2929     openbsd|bitrig)
2930         disable symver
2931         SHFLAGS='-shared'
2932         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2933         SLIB_INSTALL_LINKS=
2934         oss_indev_extralibs="-lossaudio"
2935         oss_outdev_extralibs="-lossaudio"
2936         ;;
2937     dragonfly)
2938         disable symver
2939         ;;
2940     freebsd)
2941         ;;
2942     bsd/os)
2943         add_extralibs -lpoll -lgnugetopt
2944         ;;
2945     darwin)
2946         gas="gas-preprocessor.pl $cc"
2947         enabled ppc && add_asflags -force_cpusubtype_ALL
2948         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2949         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2950         add_ldflags -Wl,-dynamic,-search_paths_first
2951         SLIBSUF=".dylib"
2952         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2953         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2954         AVSERVERLDFLAGS=-Wl,-bind_at_load
2955         objformat="macho"
2956         enabled x86_64 && objformat="macho64"
2957         enabled_any pic shared ||
2958             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2959         ;;
2960     mingw32*)
2961         if test $target_os = "mingw32ce"; then
2962             disable network
2963         else
2964             target_os=mingw32
2965         fi
2966         LIBTARGET=i386
2967         if enabled x86_64; then
2968             LIBTARGET="i386:x86-64"
2969         elif enabled arm; then
2970             LIBTARGET=arm-wince
2971         fi
2972         shlibdir_default="$bindir_default"
2973         SLIBPREF=""
2974         SLIBSUF=".dll"
2975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2977         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2979         SLIB_INSTALL_LINKS=
2980         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2981         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2982         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2983         objformat="win32"
2984         dlltool="${cross_prefix}dlltool"
2985         ranlib=:
2986         enable dos_paths
2987         ;;
2988     win32|win64)
2989         if enabled shared; then
2990             # Link to the import library instead of the normal static library
2991             # for shared libs.
2992             LD_LIB='%.lib'
2993             # Cannot build shared and static libraries at the same time with
2994             # MSVC.
2995             disable static
2996         fi
2997         shlibdir_default="$bindir_default"
2998         SLIBPREF=""
2999         SLIBSUF=".dll"
3000         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3001         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3002         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3003         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3004         SLIB_INSTALL_LINKS=
3005         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3006         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3007         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3008         objformat="win32"
3009         ranlib=:
3010         enable dos_paths
3011         ;;
3012     cygwin*)
3013         target_os=cygwin
3014         shlibdir_default="$bindir_default"
3015         SLIBPREF="cyg"
3016         SLIBSUF=".dll"
3017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3020         SLIB_INSTALL_LINKS=
3021         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3022         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3023         objformat="win32"
3024         enable dos_paths
3025         ;;
3026     *-dos|freedos|opendos)
3027         network_extralibs="-lsocket"
3028         objformat="coff"
3029         enable dos_paths
3030         add_cppflags -U__STRICT_ANSI__
3031         ;;
3032     linux)
3033         enable dv1394
3034         ;;
3035     irix*)
3036         target_os=irix
3037         ranlib="echo ignoring ranlib"
3038         ;;
3039     os/2*)
3040         ln_s="cp -f"
3041         objformat="aout"
3042         add_cppflags -D_GNU_SOURCE
3043         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3044         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3045         AVSERVERLDFLAGS=""
3046         LIBSUF="_s.a"
3047         SLIBPREF=""
3048         SLIBSUF=".dll"
3049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3051         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3052             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3053             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3054             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3055             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3056             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3057         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3058             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3059         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3060         enable dos_paths
3061         ;;
3062     gnu/kfreebsd)
3063         add_cppflags -D_BSD_SOURCE
3064         ;;
3065     gnu)
3066         ;;
3067     qnx)
3068         add_cppflags -D_QNX_SOURCE
3069         network_extralibs="-lsocket"
3070         ;;
3071     symbian)
3072         SLIBSUF=".dll"
3073         enable dos_paths
3074         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3075         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3076         add_ldflags -Wl,--target1-abs,--no-undefined \
3077                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3078                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3079         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3080                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3081                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3082         ;;
3083     osf1)
3084         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3085         AVSERVERLDFLAGS=
3086         ;;
3087     minix)
3088         ;;
3089     plan9)
3090         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3091                      -D_REENTRANT_SOURCE        \
3092                      -D_RESEARCH_SOURCE         \
3093                      -DFD_SETSIZE=96            \
3094                      -DHAVE_SOCK_OPTS
3095         add_compat strtod.o strtod=avpriv_strtod
3096         network_extralibs='-lbsd'
3097         exeobjs=compat/plan9/main.o
3098         disable avserver
3099         cp_f='cp'
3100         ;;
3101     none)
3102         ;;
3103     *)
3104         die "Unknown OS '$target_os'."
3105         ;;
3106 esac
3107
3108 # determine libc flavour
3109
3110 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3111 if check_cpp_condition features.h "defined __UCLIBC__"; then
3112     libc_type=uclibc
3113     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3114 elif check_cpp_condition features.h "defined __GLIBC__"; then
3115     libc_type=glibc
3116     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3117 # MinGW headers can be installed on Cygwin, so check for newlib first.
3118 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3119     libc_type=newlib
3120     add_cppflags -U__STRICT_ANSI__
3121 elif check_header _mingw.h; then
3122     libc_type=mingw
3123     check_cpp_condition _mingw.h \
3124         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3125             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3126         die "ERROR: MinGW runtime version must be >= 3.15."
3127     add_cppflags -U__STRICT_ANSI__
3128 elif check_func_headers stdlib.h _get_doserrno; then
3129     libc_type=msvcrt
3130     add_compat strtod.o strtod=avpriv_strtod
3131     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3132                                  _snprintf=avpriv_snprintf  \
3133                                  vsnprintf=avpriv_vsnprintf
3134 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3135     libc_type=klibc
3136 fi
3137
3138 test -n "$libc_type" && enable $libc_type
3139
3140 # hacks for compiler/libc/os combinations
3141
3142 if enabled_all tms470 glibc; then
3143     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3144     add_cppflags -D__USER_LABEL_PREFIX__=
3145     add_cppflags -D__builtin_memset=memset
3146     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3147     add_cflags   -pds=48    # incompatible redefinition of macro
3148 fi
3149
3150 if enabled_all ccc glibc; then
3151     add_ldflags -Wl,-z,now  # calls to libots crash without this
3152 fi
3153
3154 esc(){
3155     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3156 }
3157
3158 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3159
3160 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3161
3162 set_default $PATHS_LIST
3163 set_default nm
3164
3165 # we need to build at least one lib type
3166 if ! enabled_any static shared; then
3167     cat <<EOF
3168 At least one library type must be built.
3169 Specify --enable-static to build the static libraries or --enable-shared to
3170 build the shared libraries as well. To only build the shared libraries specify
3171 --disable-static in addition to --enable-shared.
3172 EOF
3173     exit 1;
3174 fi
3175
3176 die_license_disabled() {
3177     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3178 }
3179
3180 die_license_disabled gpl libcdio
3181 die_license_disabled gpl libx264
3182 die_license_disabled gpl libxavs
3183 die_license_disabled gpl libxvid
3184 die_license_disabled gpl x11grab
3185
3186 die_license_disabled nonfree libfaac
3187 die_license_disabled nonfree libfdk_aac
3188 die_license_disabled nonfree openssl
3189
3190 die_license_disabled version3 libopencore_amrnb
3191 die_license_disabled version3 libopencore_amrwb
3192 die_license_disabled version3 libvo_aacenc
3193 die_license_disabled version3 libvo_amrwbenc
3194
3195 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3196
3197 disabled optimizations || check_cflags -fomit-frame-pointer
3198
3199 enable_pic() {
3200     enable pic
3201     add_cppflags -DPIC
3202     add_cflags   -fPIC
3203     add_asflags  -fPIC
3204 }
3205
3206 enabled pic && enable_pic
3207
3208 check_cc <<EOF || die "Symbol mangling check failed."
3209 int ff_extern;
3210 EOF
3211 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3212 extern_prefix=${sym%%ff_extern*}
3213
3214 check_cc <<EOF && enable_weak inline_asm
3215 void foo(void) { __asm__ volatile ("" ::); }
3216 EOF
3217
3218 _restrict=
3219 for restrict_keyword in restrict __restrict__ __restrict; do
3220     check_cc <<EOF && _restrict=$restrict_keyword && break
3221 void foo(char * $restrict_keyword p);
3222 EOF
3223 done
3224
3225 check_cc <<EOF && enable attribute_packed
3226 struct { int x; } __attribute__((packed)) x;
3227 EOF
3228
3229 check_cc <<EOF && enable attribute_may_alias
3230 union { int x; } __attribute__((may_alias)) x;
3231 EOF
3232
3233 check_cc <<EOF || die "endian test failed"
3234 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3235 EOF
3236 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3237
3238 if enabled alpha; then
3239
3240     check_cflags -mieee
3241
3242 elif enabled arm; then
3243
3244     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3245     enabled thumb && check_cflags -mthumb || check_cflags -marm
3246     nogas=die
3247
3248     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3249         enable vfp_args
3250     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3251         case "${cross_prefix:-$cc}" in
3252             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3253             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3254 __asm__ (".eabi_attribute 28, 1");
3255 int main(void) { return 0; }
3256 EOF
3257         esac
3258         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3259     fi
3260
3261     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3262     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3263     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3264     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3265     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3266     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3267
3268     [ $target_os = linux ] ||
3269         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3270             $ARCH_EXT_LIST_ARM
3271
3272     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3273     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3274
3275     enabled_all armv6t2 shared !pic && enable_pic
3276
3277 elif enabled mips; then
3278
3279     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3280
3281 elif enabled parisc; then
3282
3283     if enabled gcc; then
3284         case $($cc -dumpversion) in
3285             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3286         esac
3287     fi
3288
3289 elif enabled ppc; then
3290
3291     enable local_aligned_8 local_aligned_16
3292
3293     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3294     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3295     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3296     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3297
3298     # AltiVec flags: The FSF version of GCC differs from the Apple version
3299     if enabled altivec; then
3300         nogas=warn
3301         check_cflags -maltivec -mabi=altivec &&
3302         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3303         check_cflags -faltivec
3304
3305         # check if our compiler supports Motorola AltiVec C API
3306         check_cc <<EOF || disable altivec
3307 $inc_altivec_h
3308 int main(void) {
3309     vector signed int v1 = (vector signed int) { 0 };
3310     vector signed int v2 = (vector signed int) { 1 };
3311     v1 = vec_add(v1, v2);
3312     return 0;
3313 }
3314 EOF
3315
3316         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3317     fi
3318
3319 elif enabled sparc; then
3320
3321     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3322
3323 elif enabled x86; then
3324
3325     check_builtin rdtsc    intrin.h   "__rdtsc()"
3326     check_builtin mm_empty mmintrin.h "_mm_empty()"
3327
3328     enable local_aligned_8 local_aligned_16
3329
3330     # check whether EBP is available on x86
3331     # As 'i' is stored on the stack, this program will crash
3332     # if the base pointer is used to access it because the
3333     # base pointer is cleared in the inline assembly code.
3334     check_exec_crash <<EOF && enable ebp_available
3335 volatile int i=0;
3336 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3337 return i;
3338 EOF
3339
3340     # check whether EBX is available on x86
3341     check_inline_asm ebx_available '""::"b"(0)' &&
3342         check_inline_asm ebx_available '"":::"%ebx"'
3343
3344     # check whether xmm clobbers are supported
3345     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3346
3347     # check whether binutils is new enough to compile SSSE3/MMXEXT
3348     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3349     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3350
3351     if ! disabled_any asm mmx yasm; then
3352         if check_cmd $yasmexe --version; then
3353             enabled x86_64 && yasm_extra="-m amd64"
3354             yasm_debug="-g dwarf2"
3355         elif check_cmd nasm -v; then
3356             yasmexe=nasm
3357             yasm_debug="-g -F dwarf"
3358             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3359         fi
3360
3361         YASMFLAGS="-f $objformat $yasm_extra"
3362         enabled pic               && append YASMFLAGS "-DPIC"
3363         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3364         case "$objformat" in
3365             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3366         esac
3367
3368         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3369             die "yasm not found, use --disable-yasm for a crippled build"
3370         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3371         check_yasm "CPU amdnop" && enable cpunop
3372     fi
3373
3374     case "$cpu" in
3375         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3376             disable fast_clz
3377         ;;
3378     esac
3379
3380 fi
3381
3382 if enabled asm; then
3383     as=${gas:=$as}
3384     check_as <<EOF && enable gnu_as || \
3385         $nogas "GNU assembler not found, install gas-preprocessor"
3386 .macro m n
3387 \n: .int 0
3388 .endm
3389 m x
3390 EOF
3391 fi
3392
3393 check_ldflags -Wl,--as-needed
3394
3395 if check_func dlopen; then
3396     ldl=
3397 elif check_func dlopen -ldl; then
3398     ldl=-ldl
3399 fi
3400
3401 if ! disabled network; then
3402     check_type "sys/types.h sys/socket.h" socklen_t
3403     check_type netdb.h "struct addrinfo"
3404     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3405     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3406     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3407     check_type netinet/in.h "struct sockaddr_in6"
3408     check_type poll.h "struct pollfd"
3409     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3410     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3411     check_type netinet/sctp.h "struct sctp_event_subscribe"
3412     check_func getaddrinfo $network_extralibs
3413     check_func getservbyport $network_extralibs
3414     # Prefer arpa/inet.h over winsock2
3415     if check_header arpa/inet.h ; then
3416         check_func closesocket
3417     elif check_header winsock2.h ; then
3418         check_func_headers winsock2.h closesocket -lws2 &&
3419             network_extralibs="-lws2" ||
3420         { check_func_headers winsock2.h closesocket -lws2_32 &&
3421             network_extralibs="-lws2_32"; }
3422         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3423         check_type ws2tcpip.h socklen_t
3424         check_type ws2tcpip.h "struct addrinfo"
3425         check_type ws2tcpip.h "struct group_source_req"
3426         check_type ws2tcpip.h "struct ip_mreq_source"
3427         check_type ws2tcpip.h "struct ipv6_mreq"
3428         check_type winsock2.h "struct pollfd"
3429         check_type ws2tcpip.h "struct sockaddr_in6"
3430         check_type ws2tcpip.h "struct sockaddr_storage"
3431         check_struct winsock2.h "struct sockaddr" sa_len
3432     else
3433         disable network
3434     fi
3435 fi
3436
3437 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3438 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3439
3440 check_func  fcntl
3441 check_func  fork
3442 check_func  gethrtime
3443 check_func  getopt
3444 check_func  getrusage
3445 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3446 check_func  gettimeofday
3447 check_func  inet_aton $network_extralibs
3448 check_func  isatty
3449 check_func  localtime_r
3450 check_func  ${malloc_prefix}memalign            && enable memalign
3451 check_func  mkstemp
3452 check_func  mmap
3453 check_func  mprotect
3454 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3455 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3456 check_func  setrlimit
3457 check_func  strerror_r
3458 check_func  strptime
3459 check_func  strtok_r
3460 check_func  sched_getaffinity
3461 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3462 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3463 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3464 check_func  sysconf
3465 check_func  sysctl
3466 check_func  usleep
3467 check_func_headers io.h setmode
3468 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3469 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3470 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3471 check_func_headers windows.h GetProcessAffinityMask
3472 check_func_headers windows.h GetProcessTimes
3473 check_func_headers windows.h GetSystemTimeAsFileTime
3474 check_func_headers windows.h MapViewOfFile
3475 check_func_headers windows.h SetConsoleTextAttribute
3476 check_func_headers windows.h Sleep
3477 check_func_headers windows.h VirtualAlloc
3478
3479 check_header direct.h
3480 check_header dlfcn.h
3481 check_header dxva.h
3482 check_header dxva2api.h
3483 check_header io.h
3484 check_header malloc.h
3485 check_header poll.h
3486 check_header sys/mman.h
3487 check_header sys/param.h
3488 check_header sys/resource.h
3489 check_header sys/select.h
3490 check_header sys/time.h
3491 check_header unistd.h
3492 check_header vdpau/vdpau.h
3493 check_header vdpau/vdpau_x11.h
3494 check_header VideoDecodeAcceleration/VDADecoder.h
3495 check_header windows.h
3496 check_header X11/extensions/XvMClib.h
3497
3498 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3499 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3500
3501 if ! disabled w32threads && ! enabled pthreads; then
3502     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3503 fi
3504
3505 # check for some common methods of building with pthread support
3506 # do this before the optional library checks as some of them require pthreads
3507 if ! disabled pthreads && ! enabled w32threads; then
3508     enable pthreads
3509     if check_func pthread_create; then
3510         :
3511     elif check_func pthread_create -pthread; then
3512         add_cflags -pthread
3513         add_extralibs -pthread
3514     elif check_func pthread_create -pthreads; then
3515         add_cflags -pthreads
3516         add_extralibs -pthreads
3517     elif check_func pthread_create -lpthreadGC2; then
3518         add_extralibs -lpthreadGC2
3519     elif ! check_lib pthread.h pthread_create -lpthread; then
3520         disable pthreads
3521     fi
3522 fi
3523
3524 for thread in $THREADS_LIST; do
3525     if enabled $thread; then
3526         test -n "$thread_type" &&
3527             die "ERROR: Only one thread type must be selected." ||
3528             thread_type="$thread"
3529     fi
3530 done
3531
3532 check_lib math.h sin -lm && LIBM="-lm"
3533 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3534
3535 atan2f_args=2
3536 ldexpf_args=2
3537 powf_args=2
3538
3539 for func in $MATH_FUNCS; do
3540     eval check_mathfunc $func \${${func}_args:-1}
3541 done
3542
3543 # these are off by default, so fail if requested and not available
3544 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3545 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3546 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3547 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3548 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3549 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3550 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3551                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3552                         done || die "ERROR: libgsm not found"; }
3553 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3554 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3555 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3556 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3557 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3558 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3559 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3560 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3561 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3562 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3563 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3564 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3565 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3566 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3567 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3568 enabled libvpx     && {
3569     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3570                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3571     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3572                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3573     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3574     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3575 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3576                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3577                         die "ERROR: libx264 version must be >= 0.118."; }
3578 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3579 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3580 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3581                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3582                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3583                         die "ERROR: openssl not found"; }
3584
3585 if enabled gnutls; then
3586     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3587     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3588 fi
3589
3590 # libdc1394 check
3591 if enabled libdc1394; then
3592     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3593         enable libdc1394_2; } ||
3594     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3595         enable libdc1394_1; } ||
3596     die "ERROR: No version of libdc1394 found "
3597 fi
3598
3599 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3600     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3601     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3602     enable sdl
3603 fi
3604
3605 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3606
3607 check_header linux/fb.h
3608 check_header linux/videodev2.h
3609 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3610
3611 check_header sys/videoio.h
3612
3613 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3614 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3615 # w32api 3.12 had it defined wrong
3616 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3617
3618 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3619 { check_header dev/bktr/ioctl_meteor.h &&
3620   check_header dev/bktr/ioctl_bt848.h; } ||
3621 { check_header machine/ioctl_meteor.h &&
3622   check_header machine/ioctl_bt848.h; } ||
3623 { check_header dev/video/meteor/ioctl_meteor.h &&
3624   check_header dev/video/bktr/ioctl_bt848.h; } ||
3625 check_header dev/ic/bt8xx.h
3626
3627 check_header sndio.h
3628 check_header sys/soundcard.h
3629 check_header soundcard.h
3630
3631 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3632
3633 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3634     check_func jack_port_get_latency_range -ljack
3635
3636 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3637
3638 if enabled libcdio; then
3639     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3640 fi
3641
3642 enabled x11grab                                           &&
3643 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3644 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3645 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3646
3647 enabled vdpau &&
3648     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3649     disable vdpau
3650
3651 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3652
3653 # add some useful compiler flags if supported
3654 check_cflags -Wdeclaration-after-statement
3655 check_cflags -Wall
3656 check_cflags -Wno-parentheses
3657 check_cflags -Wno-switch
3658 check_cflags -Wno-format-zero-length
3659 check_cflags -Wdisabled-optimization
3660 check_cflags -Wpointer-arith
3661 check_cflags -Wredundant-decls
3662 check_cflags -Wno-pointer-sign
3663 check_cflags -Wcast-qual
3664 check_cflags -Wwrite-strings
3665 check_cflags -Wtype-limits
3666 check_cflags -Wundef
3667 check_cflags -Wmissing-prototypes
3668 check_cflags -Wstrict-prototypes
3669 enabled extra_warnings && check_cflags -Winline
3670
3671 # add some linker flags
3672 check_ldflags -Wl,--warn-common
3673 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3674 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3675
3676 enabled xmm_clobber_test &&
3677     check_ldflags -Wl,--wrap,avcodec_open2              \
3678                   -Wl,--wrap,avcodec_decode_audio4      \
3679                   -Wl,--wrap,avcodec_decode_video2      \
3680                   -Wl,--wrap,avcodec_decode_subtitle2   \
3681                   -Wl,--wrap,avcodec_encode_audio2      \
3682                   -Wl,--wrap,avcodec_encode_video       \
3683                   -Wl,--wrap,avcodec_encode_subtitle    \
3684                   -Wl,--wrap,sws_scale ||
3685     disable xmm_clobber_test
3686
3687 echo "X{};" > $TMPV
3688 if test_ldflags -Wl,--version-script,$TMPV; then
3689     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3690     check_cc <<EOF && enable symver_asm_label
3691 void ff_foo(void) __asm__ ("av_foo@VERSION");
3692 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3693 EOF
3694     check_cc <<EOF && enable symver_gnu_asm
3695 __asm__(".symver ff_foo,av_foo@VERSION");
3696 void ff_foo(void) {}
3697 EOF
3698 fi
3699
3700 if [ -z "$optflags" ]; then
3701     if enabled small; then
3702         optflags=$cflags_size
3703     elif enabled optimizations; then
3704         optflags=$cflags_speed
3705     else
3706         optflags=$cflags_noopt
3707     fi
3708 fi
3709
3710 check_optflags(){
3711     check_cflags "$@"
3712     enabled lto && check_ldflags "$@"
3713 }
3714
3715
3716 if enabled lto; then
3717     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3718     check_cflags  -flto
3719     check_ldflags -flto $cpuflags
3720 fi
3721
3722 check_optflags $optflags
3723 check_optflags -fno-math-errno
3724 check_optflags -fno-signed-zeros
3725
3726 if enabled icc; then
3727     # Just warnings, no remarks
3728     check_cflags -w1
3729     # -wd: Disable following warnings
3730     # 144, 167, 556: -Wno-pointer-sign
3731     # 1292: attribute "foo" ignored
3732     # 1419: external declaration in primary source file
3733     # 10006: ignoring unknown option -fno-signed-zeros
3734     # 10148: ignoring unknown option -Wno-parentheses
3735     # 10156: ignoring option '-W'; no argument required
3736     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3737     # 11030: Warning unknown option --as-needed
3738     # 10156: ignoring option '-export'; no argument required
3739     check_ldflags -wd10156,11030
3740     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3741     enable ebp_available
3742     if enabled x86_32; then
3743         icc_version=$($cc -dumpversion)
3744         test ${icc_version%%.*} -ge 11 &&
3745             check_cflags -falign-stack=maintain-16-byte ||
3746             disable aligned_stack
3747     fi
3748 elif enabled ccc; then
3749     # disable some annoying warnings
3750     add_cflags -msg_disable bitnotint
3751     add_cflags -msg_disable mixfuncvoid
3752     add_cflags -msg_disable nonstandcast
3753     add_cflags -msg_disable unsupieee
3754 elif enabled gcc; then
3755     check_optflags -fno-tree-vectorize
3756     check_cflags -Werror=implicit-function-declaration
3757     check_cflags -Werror=missing-prototypes
3758     check_cflags -Werror=return-type
3759     check_cflags -Werror=declaration-after-statement
3760     check_cflags -Werror=vla
3761 elif enabled llvm_gcc; then
3762     check_cflags -mllvm -stack-alignment=16
3763 elif enabled clang; then
3764     check_cflags -mllvm -stack-alignment=16
3765     check_cflags -Qunused-arguments
3766     check_cflags -Werror=implicit-function-declaration
3767     check_cflags -Werror=missing-prototypes
3768     check_cflags -Werror=return-type
3769 elif enabled armcc; then
3770     # 2523: use of inline assembler is deprecated
3771     add_cflags -W${armcc_opt},--diag_suppress=2523
3772     add_cflags -W${armcc_opt},--diag_suppress=1207
3773     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3774     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3775     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3776     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3777 elif enabled tms470; then
3778     add_cflags -pds=824 -pds=837
3779 elif enabled pathscale; then
3780     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3781 elif enabled msvc; then
3782     enabled x86_32 && disable aligned_stack
3783 fi
3784
3785 case $target_os in
3786     osf1)
3787         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3788     ;;
3789     plan9)
3790         add_cppflags -Dmain=plan9_main
3791     ;;
3792 esac
3793
3794 enabled_any $THREADS_LIST      && enable threads
3795
3796 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3797
3798 check_deps $CONFIG_LIST       \
3799            $CONFIG_EXTRA      \
3800            $HAVE_LIST         \
3801            $ALL_COMPONENTS    \
3802
3803 ! enabled_any memalign posix_memalign aligned_malloc &&
3804     enabled_any $need_memalign && enable memalign_hack
3805
3806 echo "install prefix            $prefix"
3807 echo "source path               $source_path"
3808 echo "C compiler                $cc"
3809 echo "ARCH                      $arch ($cpu)"
3810 if test "$build_suffix" != ""; then
3811     echo "build suffix              $build_suffix"
3812 fi
3813 if test "$extra_version" != ""; then
3814     echo "version string suffix     $extra_version"
3815 fi
3816 echo "big-endian                ${bigendian-no}"
3817 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3818 if enabled x86; then
3819     echo "${yasmexe}                      ${yasm-no}"
3820     echo "MMX enabled               ${mmx-no}"
3821     echo "MMXEXT enabled            ${mmxext-no}"
3822     echo "3DNow! enabled            ${amd3dnow-no}"
3823     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3824     echo "SSE enabled               ${sse-no}"
3825     echo "SSSE3 enabled             ${ssse3-no}"
3826     echo "AVX enabled               ${avx-no}"
3827     echo "FMA4 enabled              ${fma4-no}"
3828     echo "CMOV enabled              ${cmov-no}"
3829     echo "CMOV is fast              ${fast_cmov-no}"
3830     echo "EBX available             ${ebx_available-no}"
3831     echo "EBP available             ${ebp_available-no}"
3832 fi
3833 if enabled arm; then
3834     echo "ARMv5TE enabled           ${armv5te-no}"
3835     echo "ARMv6 enabled             ${armv6-no}"
3836     echo "ARMv6T2 enabled           ${armv6t2-no}"
3837     echo "VFP enabled               ${vfp-no}"
3838     echo "NEON enabled              ${neon-no}"
3839 fi
3840 if enabled ppc; then
3841     echo "AltiVec enabled           ${altivec-no}"
3842     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3843     echo "dcbzl available           ${dcbzl-no}"
3844 fi
3845 if enabled sparc; then
3846     echo "VIS enabled               ${vis-no}"
3847 fi
3848 echo "debug symbols             ${debug-no}"
3849 echo "optimize for size         ${small-no}"
3850 echo "optimizations             ${optimizations-no}"
3851 echo "static                    ${static-no}"
3852 echo "shared                    ${shared-no}"
3853 echo "new filter support        ${avfilter-no}"
3854 echo "network support           ${network-no}"
3855 echo "threading support         ${thread_type-no}"
3856 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3857 echo "SDL support               ${sdl-no}"
3858 test -n "$random_seed" &&
3859     echo "random seed               ${random_seed}"
3860 echo
3861
3862 echo "External libraries:"
3863 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3864 echo
3865
3866 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3867     echo "Enabled ${type}s:"
3868     eval list=\$$(toupper $type)_LIST
3869     print_enabled '_*' $list | print_3_columns
3870     echo
3871 done
3872
3873 license="LGPL version 2.1 or later"
3874 if enabled nonfree; then
3875     license="nonfree and unredistributable"
3876 elif enabled gplv3; then
3877     license="GPL version 3 or later"
3878 elif enabled lgplv3; then
3879     license="LGPL version 3 or later"
3880 elif enabled gpl; then
3881     license="GPL version 2 or later"
3882 fi
3883
3884 echo "License: $license"
3885
3886 echo "Creating config.mak and config.h..."
3887
3888 test -e Makefile || $ln_s "$source_path/Makefile" .
3889
3890 config_files="$TMPH config.mak"
3891
3892 cat > config.mak <<EOF
3893 # Automatically generated by configure - do not modify!
3894 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3895 prefix=$prefix
3896 LIBDIR=\$(DESTDIR)$libdir
3897 SHLIBDIR=\$(DESTDIR)$shlibdir
3898 INCDIR=\$(DESTDIR)$incdir
3899 BINDIR=\$(DESTDIR)$bindir
3900 DATADIR=\$(DESTDIR)$datadir
3901 MANDIR=\$(DESTDIR)$mandir
3902 SRC_PATH=$source_path
3903 CC_IDENT=$cc_ident
3904 ARCH=$arch
3905 CC=$cc
3906 AS=$as
3907 LD=$ld
3908 DEPCC=$dep_cc
3909 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3910 DEPAS=$as
3911 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3912 YASM=$yasmexe
3913 DEPYASM=$yasmexe
3914 AR=$ar
3915 ARFLAGS=$arflags
3916 AR_O=$ar_o
3917 RANLIB=$ranlib
3918 LN_S=$ln_s
3919 CPPFLAGS=$CPPFLAGS
3920 CFLAGS=$CFLAGS
3921 ASFLAGS=$ASFLAGS
3922 AS_C=$AS_C
3923 AS_O=$AS_O
3924 CC_C=$CC_C
3925 CC_E=$CC_E
3926 CC_O=$CC_O
3927 LD_O=$LD_O
3928 LD_LIB=$LD_LIB
3929 LD_PATH=$LD_PATH
3930 DLLTOOL=$dlltool
3931 LDFLAGS=$LDFLAGS
3932 LDFLAGS-avserver=$AVSERVERLDFLAGS
3933 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3934 YASMFLAGS=$YASMFLAGS
3935 BUILDSUF=$build_suffix
3936 FULLNAME=$FULLNAME
3937 LIBPREF=$LIBPREF
3938 LIBSUF=$LIBSUF
3939 LIBNAME=$LIBNAME
3940 SLIBPREF=$SLIBPREF
3941 SLIBSUF=$SLIBSUF
3942 EXESUF=$EXESUF
3943 EXTRA_VERSION=$extra_version
3944 CCDEP=$CCDEP
3945 CCDEP_FLAGS=$CCDEP_FLAGS
3946 ASDEP=$ASDEP
3947 ASDEP_FLAGS=$ASDEP_FLAGS
3948 CC_DEPFLAGS=$CC_DEPFLAGS
3949 AS_DEPFLAGS=$AS_DEPFLAGS
3950 HOSTCC=$host_cc
3951 HOSTLD=$host_ld
3952 HOSTCFLAGS=$host_cflags
3953 HOSTCPPFLAGS=$host_cppflags
3954 HOSTEXESUF=$HOSTEXESUF
3955 HOSTLDFLAGS=$host_ldflags
3956 HOSTLIBS=$host_libs
3957 DEPHOSTCC=$host_cc
3958 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
3959 HOSTCCDEP=$HOSTCCDEP
3960 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
3961 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
3962 HOSTCC_C=$HOSTCC_C
3963 HOSTCC_O=$HOSTCC_O
3964 HOSTLD_O=$HOSTLD_O
3965 TARGET_EXEC=$target_exec
3966 TARGET_PATH=$target_path
3967 LIBS-avplay=$sdl_libs
3968 CFLAGS-avplay=$sdl_cflags
3969 ZLIB=$($ldflags_filter -lz)
3970 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3971 EXTRALIBS=$extralibs
3972 COMPAT_OBJS=$compat_objs
3973 EXEOBJS=$exeobjs
3974 INSTALL=install
3975 LIBTARGET=${LIBTARGET}
3976 SLIBNAME=${SLIBNAME}
3977 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3978 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3979 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3980 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3981 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3982 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3983 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3984 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3985 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
3986 EOF
3987
3988 get_version(){
3989     lcname=lib${1}
3990     name=$(toupper $lcname)
3991     file=$source_path/$lcname/version.h
3992     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
3993     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3994     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3995     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3996     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
3997 }
3998
3999 map 'get_version $v' $LIBRARY_LIST
4000
4001 cat > $TMPH <<EOF
4002 /* Automatically generated by configure - do not modify! */
4003 #ifndef LIBAV_CONFIG_H
4004 #define LIBAV_CONFIG_H
4005 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4006 #define LIBAV_LICENSE "$(c_escape $license)"
4007 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4008 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4009 #define restrict $_restrict
4010 #define EXTERN_PREFIX "${extern_prefix}"
4011 #define EXTERN_ASM ${extern_prefix}
4012 #define SLIBSUF "$SLIBSUF"
4013 EOF
4014
4015 test -n "$malloc_prefix" &&
4016     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4017
4018 if enabled yasm; then
4019     append config_files $TMPASM
4020     printf '' >$TMPASM
4021 fi
4022
4023 print_config ARCH_   "$config_files" $ARCH_LIST
4024 print_config HAVE_   "$config_files" $HAVE_LIST
4025 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4026                                      $CONFIG_EXTRA      \
4027                                      $ALL_COMPONENTS    \
4028
4029 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4030
4031 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4032 cp_if_changed $TMPH config.h
4033 touch .config
4034
4035 enabled yasm && cp_if_changed $TMPASM config.asm
4036
4037 cat > $TMPH <<EOF
4038 /* Generated by ffconf */
4039 #ifndef AVUTIL_AVCONFIG_H
4040 #define AVUTIL_AVCONFIG_H
4041 EOF
4042
4043 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4044
4045 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4046
4047 cp_if_changed $TMPH libavutil/avconfig.h
4048
4049 test -n "$WARNINGS" && printf "\n$WARNINGS"
4050
4051 # build pkg-config files
4052
4053 pkgconfig_generate(){
4054     name=$1
4055     shortname=${name#lib}${build_suffix}
4056     comment=$2
4057     version=$3
4058     libs=$4
4059     requires=$5
4060     enabled ${name#lib} || return 0
4061     mkdir -p $name
4062     cat <<EOF > $name/$name.pc
4063 prefix=$prefix
4064 exec_prefix=\${prefix}
4065 libdir=$libdir
4066 includedir=$incdir
4067
4068 Name: $name
4069 Description: $comment
4070 Version: $version
4071 Requires: $(enabled shared || echo $requires)
4072 Requires.private: $(enabled shared && echo $requires)
4073 Conflicts:
4074 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4075 Libs.private: $(enabled shared && echo $libs)
4076 Cflags: -I\${includedir}
4077 EOF
4078     cat <<EOF > $name/$name-uninstalled.pc
4079 prefix=
4080 exec_prefix=
4081 libdir=\${pcfiledir}
4082 includedir=${source_path}
4083
4084 Name: $name
4085 Description: $comment
4086 Version: $version
4087 Requires: $requires
4088 Conflicts:
4089 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4090 Cflags: -I\${includedir}
4091 EOF
4092 }
4093
4094 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4095 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4096 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4097 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4098 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4099 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4100 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"