configure: Remove a stray msmpeg4v1 encoder declaration
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --libdir=DIR             install libs in DIR [PREFIX/lib]
85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
86   --incdir=DIR             install includes in DIR [PREFIX/include]
87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
88
89 Licensing options:
90   --enable-gpl             allow use of GPL code, the resulting libs
91                            and binaries will be under GPL [no]
92   --enable-version3        upgrade (L)GPL to version 3 [no]
93   --enable-nonfree         allow use of nonfree code, the resulting libs
94                            and binaries will be unredistributable [no]
95
96 Configuration options:
97   --disable-static         do not build static libraries [no]
98   --enable-shared          build shared libraries [no]
99   --enable-small           optimize for size instead of speed
100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
101   --enable-gray            enable full grayscale support (slower color)
102   --disable-swscale-alpha  disable alpha channel support in swscale
103   --disable-all            disable building components, libraries and programs
104
105 Program options:
106   --disable-programs       do not build command line programs
107   --disable-avconv         disable avconv build
108   --disable-avplay         disable avplay build
109   --disable-avprobe        disable avprobe build
110   --disable-avserver       disable avserver build
111
112 Component options:
113   --disable-doc            do not build documentation
114   --disable-avdevice       disable libavdevice build
115   --disable-avcodec        disable libavcodec build
116   --disable-avformat       disable libavformat build
117   --disable-avutil         disable libavutil build
118   --disable-swscale        disable libswscale build
119   --disable-avfilter       disable video filter support [no]
120   --disable-avresample     disable libavresample build [no]
121   --disable-pthreads       disable pthreads [auto]
122   --disable-w32threads     disable Win32 threads [auto]
123   --disable-network        disable network support [no]
124   --disable-dct            disable DCT code
125   --disable-error-resilience disable error resilience code
126   --disable-lsp            disable LSP code
127   --disable-lzo            disable LZO decoder code
128   --disable-mdct           disable MDCT code
129   --disable-rdft           disable RDFT code
130   --disable-fft            disable FFT code
131
132 Hardware accelerators:
133   --enable-dxva2           enable DXVA2 code
134   --enable-vaapi           enable VAAPI code
135   --enable-vda             enable VDA code
136   --enable-vdpau           enable VDPAU code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176   --enable-avisynth        enable reading of AVISynth script files [no]
177   --enable-bzlib           enable bzlib [autodetect]
178   --enable-frei0r          enable frei0r video filtering
179   --enable-gnutls          enable gnutls [no]
180   --enable-libcdio         enable audio CD grabbing with libcdio
181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
182                            and libraw1394 [no]
183   --enable-libfaac         enable AAC encoding via libfaac [no]
184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
185   --enable-libfreetype     enable libfreetype [no]
186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
191   --enable-libopencv       enable video filtering via libopencv [no]
192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
193   --enable-libopus         enable Opus decoding via libopus [no]
194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
198   --enable-libtheora       enable Theora encoding via libtheora [no]
199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
203   --enable-libx264         enable H.264 encoding via x264 [no]
204   --enable-libxavs         enable AVS encoding via xavs [no]
205   --enable-libxvid         enable Xvid encoding via xvidcore,
206                            native MPEG-4/Xvid encoder exists [no]
207   --enable-openssl         enable openssl [no]
208   --enable-x11grab         enable X11 grabbing [no]
209   --enable-zlib            enable zlib [autodetect]
210
211 Advanced options (experts only):
212   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
213   --enable-cross-compile   assume a cross-compiler is used
214   --sysroot=PATH           root of cross-build tree
215   --sysinclude=PATH        location of cross-build system headers
216   --target-os=OS           compiler targets OS [$target_os]
217   --target-exec=CMD        command to run executables on target
218   --target-path=DIR        path to view of build directory on target
219   --toolchain=NAME         set tool defaults according to NAME
220   --nm=NM                  use nm tool
221   --ar=AR                  use archive tool AR [$ar_default]
222   --as=AS                  use assembler AS [$as_default]
223   --cc=CC                  use C compiler CC [$cc_default]
224   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
225   --ld=LD                  use linker LD
226   --host-cc=HOSTCC         use host C compiler HOSTCC
227   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
228   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
229   --host-ld=HOSTLD         use host linker HOSTLD
230   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
231   --host-libs=HLIBS        use libs HLIBS when linking for host
232   --host-os=OS             compiler host OS [$target_os]
233   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
234   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
235   --extra-libs=ELIBS       add ELIBS [$ELIBS]
236   --extra-version=STRING   version string suffix []
237   --optflags=OPTFLAGS      override optimization-related compiler flags
238   --build-suffix=SUFFIX    library name suffix []
239   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
240   --arch=ARCH              select architecture [$arch]
241   --cpu=CPU                select the minimum required CPU (affects
242                            instruction selection, may crash on older CPUs)
243   --enable-pic             build position-independent code
244   --enable-sram            allow use of on-chip SRAM
245   --enable-thumb           compile for Thumb instruction set
246   --disable-symver         disable symbol versioning
247   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
248   --disable-safe-bitstream-reader
249                            disable buffer boundary checking in bitreaders
250                            (faster, but may crash)
251   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
252   --enable-lto             use link-time optimization
253
254 Optimization options (experts only):
255   --disable-asm            disable all assembler optimizations
256   --disable-altivec        disable AltiVec optimizations
257   --disable-amd3dnow       disable 3DNow! optimizations
258   --disable-amd3dnowext    disable 3DNow! extended optimizations
259   --disable-mmx            disable MMX optimizations
260   --disable-mmxext         disable MMXEXT optimizations
261   --disable-sse            disable SSE optimizations
262   --disable-sse2           disable SSE2 optimizations
263   --disable-sse3           disable SSE3 optimizations
264   --disable-ssse3          disable SSSE3 optimizations
265   --disable-sse4           disable SSE4 optimizations
266   --disable-sse42          disable SSE4.2 optimizations
267   --disable-avx            disable AVX optimizations
268   --disable-fma4           disable FMA4 optimizations
269   --disable-armv5te        disable armv5te optimizations
270   --disable-armv6          disable armv6 optimizations
271   --disable-armv6t2        disable armv6t2 optimizations
272   --disable-vfp            disable VFP optimizations
273   --disable-neon           disable NEON optimizations
274   --disable-vis            disable VIS optimizations
275   --disable-inline-asm     disable use of inline assembler
276   --disable-yasm           disable use of yasm assembler
277
278 Developer options (useful when working on Libav itself):
279   --disable-debug          disable debugging symbols
280   --enable-debug=LEVEL     set the debug level [$debuglevel]
281   --disable-optimizations  disable compiler optimizations
282   --enable-extra-warnings  enable more compiler warnings
283   --samples=PATH           location of test samples for FATE, if not set use
284                            \$LIBAV_SAMPLES at make invocation time.
285   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
286                            should be used only for debugging purposes)
287   --enable-random          randomly enable/disable components
288   --disable-random
289   --enable-random=LIST     randomly enable/disable specific components or
290   --disable-random=LIST    component groups. LIST is a comma-separated list
291                            of NAME[:PROB] entries where NAME is a component
292                            (group) and PROB the probability associated with
293                            NAME (default 0.5).
294   --random-seed=VALUE      seed value for --enable/disable-random
295
296 NOTE: Object files are built at the place where configure is launched.
297 EOF
298   exit 0
299 }
300
301 quotes='""'
302
303 log(){
304     echo "$@" >> $logfile
305 }
306
307 log_file(){
308     log BEGIN $1
309     pr -n -t $1 >> $logfile
310     log END $1
311 }
312
313 echolog(){
314     log "$@"
315     echo "$@"
316 }
317
318 warn(){
319     log "WARNING: $*"
320     WARNINGS="${WARNINGS}WARNING: $*\n"
321 }
322
323 die(){
324     echolog "$@"
325     cat <<EOF
326
327 If you think configure made a mistake, make sure you are using the latest
328 version from Git.  If the latest version fails, report the problem to the
329 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
330 EOF
331     if disabled logging; then
332         cat <<EOF
333 Rerun configure with logging enabled (do not use --disable-logging), and
334 include the log this produces with your report.
335 EOF
336     else
337         cat <<EOF
338 Include the log file "$logfile" produced by configure as this will help
339 solving the problem.
340 EOF
341     fi
342     exit 1
343 }
344
345 # Avoid locale weirdness, besides we really just want to translate ASCII.
346 toupper(){
347     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
348 }
349
350 tolower(){
351     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
352 }
353
354 c_escape(){
355     echo "$*" | sed 's/["\\]/\\\0/g'
356 }
357
358 sh_quote(){
359     v=$(echo "$1" | sed "s/'/'\\\\''/g")
360     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
361     echo "$v"
362 }
363
364 cleanws(){
365     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
366 }
367
368 filter(){
369     pat=$1
370     shift
371     for v; do
372         eval "case $v in $pat) echo $v ;; esac"
373     done
374 }
375
376 filter_out(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) ;; *) echo $v ;; esac"
381     done
382 }
383
384 map(){
385     m=$1
386     shift
387     for v; do eval $m; done
388 }
389
390 add_suffix(){
391     suffix=$1
392     shift
393     for v; do echo ${v}${suffix}; done
394 }
395
396 set_all(){
397     value=$1
398     shift
399     for var in $*; do
400         eval $var=$value
401     done
402 }
403
404 set_weak(){
405     value=$1
406     shift
407     for var; do
408         eval : \${$var:=$value}
409     done
410 }
411
412 sanitize_var_name(){
413     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
414 }
415
416 set_safe(){
417     var=$1
418     shift
419     eval $(sanitize_var_name "$var")='$*'
420 }
421
422 get_safe(){
423     eval echo \$$(sanitize_var_name "$1")
424 }
425
426 pushvar(){
427     for var in $*; do
428         eval level=\${${var}_level:=0}
429         eval ${var}_${level}="\$$var"
430         eval ${var}_level=$(($level+1))
431     done
432 }
433
434 popvar(){
435     for var in $*; do
436         eval level=\${${var}_level:-0}
437         test $level = 0 && continue
438         eval level=$(($level-1))
439         eval $var="\${${var}_${level}}"
440         eval ${var}_level=$level
441         eval unset ${var}_${level}
442     done
443 }
444
445 enable(){
446     set_all yes $*
447 }
448
449 disable(){
450     set_all no $*
451 }
452
453 enable_weak(){
454     set_weak yes $*
455 }
456
457 disable_weak(){
458     set_weak no $*
459 }
460
461 enable_safe(){
462     for var; do
463         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
464     done
465 }
466
467 disable_safe(){
468     for var; do
469         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
470     done
471 }
472
473 do_enable_deep(){
474     for var; do
475         enabled $var && continue
476         eval sel="\$${var}_select"
477         eval sgs="\$${var}_suggest"
478         pushvar var sgs
479         enable_deep $sel
480         popvar sgs
481         enable_deep_weak $sgs
482         popvar var
483     done
484 }
485
486 enable_deep(){
487     do_enable_deep $*
488     enable $*
489 }
490
491 enable_deep_weak(){
492     do_enable_deep $*
493     enable_weak $*
494 }
495
496 enabled(){
497     test "${1#!}" = "$1" && op== || op=!=
498     eval test "x\$${1#!}" $op "xyes"
499 }
500
501 disabled(){
502     test "${1#!}" = "$1" && op== || op=!=
503     eval test "x\$${1#!}" $op "xno"
504 }
505
506 enabled_all(){
507     for opt; do
508         enabled $opt || return 1
509     done
510 }
511
512 disabled_all(){
513     for opt; do
514         disabled $opt || return 1
515     done
516 }
517
518 enabled_any(){
519     for opt; do
520         enabled $opt && return 0
521     done
522 }
523
524 disabled_any(){
525     for opt; do
526         disabled $opt && return 0
527     done
528     return 1
529 }
530
531 set_default(){
532     for opt; do
533         eval : \${$opt:=\$${opt}_default}
534     done
535 }
536
537 is_in(){
538     value=$1
539     shift
540     for var in $*; do
541         [ $var = $value ] && return 0
542     done
543     return 1
544 }
545
546 do_check_deps(){
547     for cfg; do
548         cfg="${cfg#!}"
549         enabled ${cfg}_checking && die "Circular dependency for $cfg."
550         disabled ${cfg}_checking && continue
551         enable ${cfg}_checking
552         append allopts $cfg
553
554         eval dep_all="\$${cfg}_deps"
555         eval dep_any="\$${cfg}_deps_any"
556         eval dep_sel="\$${cfg}_select"
557         eval dep_sgs="\$${cfg}_suggest"
558         eval dep_ifa="\$${cfg}_if"
559         eval dep_ifn="\$${cfg}_if_any"
560
561         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
562         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
563         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
564
565         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
566         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
567         enabled_all  $dep_all || disable $cfg
568         enabled_any  $dep_any || disable $cfg
569         disabled_any $dep_sel && disable $cfg
570
571         if enabled $cfg; then
572             enable_deep $dep_sel
573             enable_deep_weak $dep_sgs
574         fi
575
576         disable ${cfg}_checking
577     done
578 }
579
580 check_deps(){
581     unset allopts
582
583     do_check_deps "$@"
584
585     for cfg in $allopts; do
586         enabled $cfg || continue
587         eval dep_extralibs="\$${cfg}_extralibs"
588         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
589     done
590 }
591
592 print_config(){
593     pfx=$1
594     files=$2
595     shift 2
596     map 'eval echo "$v \${$v:-no}"' "$@" |
597     awk "BEGIN { split(\"$files\", files) }
598         {
599             c = \"$pfx\" toupper(\$1);
600             v = \$2;
601             sub(/yes/, 1, v);
602             sub(/no/,  0, v);
603             for (f in files) {
604                 file = files[f];
605                 if (file ~ /\\.h\$/) {
606                     printf(\"#define %s %d\\n\", c, v) >>file;
607                 } else if (file ~ /\\.asm\$/) {
608                     printf(\"%%define %s %d\\n\", c, v) >>file;
609                 } else if (file ~ /\\.mak\$/) {
610                     n = -v ? \"\" : \"!\";
611                     printf(\"%s%s=yes\\n\", n, c) >>file;
612                 }
613             }
614         }"
615 }
616
617 print_enabled(){
618     suf=$1
619     shift
620     for v; do
621         enabled $v && printf "%s\n" ${v%$suf};
622     done
623 }
624
625 append(){
626     var=$1
627     shift
628     eval "$var=\"\$$var $*\""
629 }
630
631 prepend(){
632     var=$1
633     shift
634     eval "$var=\"$* \$$var\""
635 }
636
637 add_cppflags(){
638     append CPPFLAGS "$@"
639 }
640
641 add_cflags(){
642     append CFLAGS $($cflags_filter "$@")
643 }
644
645 add_asflags(){
646     append ASFLAGS $($asflags_filter "$@")
647 }
648
649 add_ldflags(){
650     append LDFLAGS $($ldflags_filter "$@")
651 }
652
653 add_extralibs(){
654     prepend extralibs $($ldflags_filter "$@")
655 }
656
657 add_host_cppflags(){
658     append host_cppflags "$@"
659 }
660
661 add_host_cflags(){
662     append host_cflags $($host_cflags_filter "$@")
663 }
664
665 add_host_ldflags(){
666     append host_ldflags $($host_ldflags_filter "$@")
667 }
668
669 add_compat(){
670     append compat_objs $1
671     shift
672     map 'add_cppflags -D$v' "$@"
673 }
674
675 check_cmd(){
676     log "$@"
677     "$@" >> $logfile 2>&1
678 }
679
680 cc_o(){
681     eval printf '%s\\n' $CC_O
682 }
683
684 cc_e(){
685     eval printf '%s\\n' $CC_E
686 }
687
688 check_cc(){
689     log check_cc "$@"
690     cat > $TMPC
691     log_file $TMPC
692     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
693 }
694
695 check_cpp(){
696     log check_cpp "$@"
697     cat > $TMPC
698     log_file $TMPC
699     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
700 }
701
702 as_o(){
703     eval printf '%s\\n' $AS_O
704 }
705
706 check_as(){
707     log check_as "$@"
708     cat > $TMPS
709     log_file $TMPS
710     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
711 }
712
713 check_inline_asm(){
714     log check_inline_asm "$@"
715     name="$1"
716     code="$2"
717     shift 2
718     disable $name
719     check_cc "$@" <<EOF && enable $name
720 void foo(void){ __asm__ volatile($code); }
721 EOF
722 }
723
724 check_insn(){
725     log check_insn "$@"
726     check_inline_asm ${1}_inline "\"$2\""
727     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
728 }
729
730 check_yasm(){
731     log check_yasm "$@"
732     echo "$1" > $TMPS
733     log_file $TMPS
734     shift 1
735     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
736 }
737
738 ld_o(){
739     eval printf '%s\\n' $LD_O
740 }
741
742 check_ld(){
743     log check_ld "$@"
744     flags=$(filter_out '-l*' "$@")
745     libs=$(filter '-l*' "$@")
746     check_cc $($cflags_filter $flags) || return
747     flags=$($ldflags_filter $flags)
748     libs=$($ldflags_filter $libs)
749     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
750 }
751
752 check_code(){
753     log check_code "$@"
754     check=$1
755     headers=$2
756     code=$3
757     shift 3
758     {
759         for hdr in $headers; do
760             echo "#include <$hdr>"
761         done
762         echo "int main(void) { $code; return 0; }"
763     } | check_$check "$@"
764 }
765
766 check_cppflags(){
767     log check_cppflags "$@"
768     check_cc "$@" <<EOF && append CPPFLAGS "$@"
769 int x;
770 EOF
771 }
772
773 check_cflags(){
774     log check_cflags "$@"
775     set -- $($cflags_filter "$@")
776     check_cc "$@" <<EOF && append CFLAGS "$@"
777 int x;
778 EOF
779 }
780
781 test_ldflags(){
782     log test_ldflags "$@"
783     check_ld "$@" <<EOF
784 int main(void){ return 0; }
785 EOF
786 }
787
788 check_ldflags(){
789     log check_ldflags "$@"
790     test_ldflags "$@" && add_ldflags "$@"
791 }
792
793 check_header(){
794     log check_header "$@"
795     header=$1
796     shift
797     disable_safe $header
798     check_cpp "$@" <<EOF && enable_safe $header
799 #include <$header>
800 int x;
801 EOF
802 }
803
804 check_func(){
805     log check_func "$@"
806     func=$1
807     shift
808     disable $func
809     check_ld "$@" <<EOF && enable $func
810 extern int $func();
811 int main(void){ $func(); }
812 EOF
813 }
814
815 check_mathfunc(){
816     log check_mathfunc "$@"
817     func=$1
818     narg=$2
819     shift 2
820     test $narg = 2 && args="f, g" || args="f"
821     disable $func
822     check_ld "$@" <<EOF && enable $func
823 #include <math.h>
824 float foo(float f, float g) { return $func($args); }
825 int main(void){ return 0; }
826 EOF
827 }
828
829 check_func_headers(){
830     log check_func_headers "$@"
831     headers=$1
832     funcs=$2
833     shift 2
834     {
835         for hdr in $headers; do
836             echo "#include <$hdr>"
837         done
838         for func in $funcs; do
839             echo "long check_$func(void) { return (long) $func; }"
840         done
841         echo "int main(void) { return 0; }"
842     } | check_ld "$@" && enable $funcs && enable_safe $headers
843 }
844
845 check_cpp_condition(){
846     log check_cpp_condition "$@"
847     header=$1
848     condition=$2
849     shift 2
850     check_cpp "$@" <<EOF
851 #include <$header>
852 #if !($condition)
853 #error "unsatisfied condition: $condition"
854 #endif
855 EOF
856 }
857
858 check_lib(){
859     log check_lib "$@"
860     header="$1"
861     func="$2"
862     shift 2
863     check_header $header && check_func $func "$@" && add_extralibs "$@"
864 }
865
866 check_lib2(){
867     log check_lib2 "$@"
868     headers="$1"
869     funcs="$2"
870     shift 2
871     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
872 }
873
874 check_pkg_config(){
875     log check_pkg_config "$@"
876     pkg="$1"
877     headers="$2"
878     funcs="$3"
879     shift 3
880     $pkg_config --exists $pkg || return
881     pkg_cflags=$($pkg_config --cflags $pkg)
882     pkg_libs=$($pkg_config --libs $pkg)
883     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
884         set_safe ${pkg}_cflags $pkg_cflags   &&
885         set_safe ${pkg}_libs   $pkg_libs
886 }
887
888 check_exec(){
889     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
890 }
891
892 check_exec_crash(){
893     code=$(cat)
894
895     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
896     # are safe but may not be available everywhere.  Thus we use
897     # raise(SIGTERM) instead.  The check is run in a subshell so we
898     # can redirect the "Terminated" message from the shell.  SIGBUS
899     # is not defined by standard C so it is used conditionally.
900
901     (check_exec "$@") >> $logfile 2>&1 <<EOF
902 #include <signal.h>
903 static void sighandler(int sig){
904     raise(SIGTERM);
905 }
906 int foo(void){
907     $code
908 }
909 int main(void){
910     signal(SIGILL, sighandler);
911     signal(SIGFPE, sighandler);
912     signal(SIGSEGV, sighandler);
913 #ifdef SIGBUS
914     signal(SIGBUS, sighandler);
915 #endif
916     foo();
917 }
918 EOF
919 }
920
921 check_type(){
922     log check_type "$@"
923     headers=$1
924     type=$2
925     shift 2
926     disable_safe "$type"
927     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
928 }
929
930 check_struct(){
931     log check_struct "$@"
932     headers=$1
933     struct=$2
934     member=$3
935     shift 3
936     disable_safe "${struct}_${member}"
937     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
938         enable_safe "${struct}_${member}"
939 }
940
941 check_builtin(){
942     log check_builtin "$@"
943     name=$1
944     headers=$2
945     builtin=$3
946     shift 3
947     disable "$name"
948     check_code ld "$headers" "$builtin" "$@" && enable "$name"
949 }
950
951 require(){
952     name="$1"
953     header="$2"
954     func="$3"
955     shift 3
956     check_lib $header $func "$@" || die "ERROR: $name not found"
957 }
958
959 require2(){
960     name="$1"
961     headers="$2"
962     func="$3"
963     shift 3
964     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
965 }
966
967 require_pkg_config(){
968     pkg="$1"
969     check_pkg_config "$@" || die "ERROR: $pkg not found"
970     add_cflags    $(get_safe ${pkg}_cflags)
971     add_extralibs $(get_safe ${pkg}_libs)
972 }
973
974 hostcc_o(){
975     eval printf '%s\\n' $HOSTCC_O
976 }
977
978 check_host_cc(){
979     log check_host_cc "$@"
980     cat > $TMPC
981     log_file $TMPC
982     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
983 }
984
985 check_host_cppflags(){
986     log check_host_cppflags "$@"
987     check_host_cc "$@" <<EOF && append host_cppflags "$@"
988 int x;
989 EOF
990 }
991
992 check_host_cflags(){
993     log check_host_cflags "$@"
994     set -- $($host_cflags_filter "$@")
995     check_host_cc "$@" <<EOF && append host_cflags "$@"
996 int x;
997 EOF
998 }
999
1000 apply(){
1001     file=$1
1002     shift
1003     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1004 }
1005
1006 cp_if_changed(){
1007     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1008     mkdir -p "$(dirname $2)"
1009     $cp_f "$1" "$2"
1010 }
1011
1012 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1013 # system-dependent things.
1014
1015 COMPONENT_LIST="
1016     bsfs
1017     decoders
1018     demuxers
1019     encoders
1020     filters
1021     hwaccels
1022     indevs
1023     muxers
1024     outdevs
1025     parsers
1026     protocols
1027 "
1028
1029 EXTERNAL_LIBRARY_LIST="
1030     avisynth
1031     bzlib
1032     frei0r
1033     gnutls
1034     libcdio
1035     libdc1394
1036     libfaac
1037     libfdk_aac
1038     libfreetype
1039     libgsm
1040     libilbc
1041     libmp3lame
1042     libopencore_amrnb
1043     libopencore_amrwb
1044     libopencv
1045     libopenjpeg
1046     libopus
1047     libpulse
1048     librtmp
1049     libschroedinger
1050     libspeex
1051     libtheora
1052     libvo_aacenc
1053     libvo_amrwbenc
1054     libvorbis
1055     libvpx
1056     libx264
1057     libxavs
1058     libxvid
1059     openssl
1060     x11grab
1061     zlib
1062 "
1063
1064 HWACCEL_LIST="
1065     dxva2
1066     vaapi
1067     vda
1068     vdpau
1069 "
1070 LIBRARY_LIST="
1071     avcodec
1072     avdevice
1073     avfilter
1074     avformat
1075     avresample
1076     avutil
1077     swscale
1078 "
1079
1080 PROGRAM_LIST="
1081     avconv
1082     avplay
1083     avprobe
1084     avserver
1085 "
1086
1087 CONFIG_LIST="
1088     $COMPONENT_LIST
1089     $EXTERNAL_LIBRARY_LIST
1090     $HWACCEL_LIST
1091     $LIBRARY_LIST
1092     $PROGRAM_LIST
1093     dct
1094     doc
1095     error_resilience
1096     fft
1097     gpl
1098     gray
1099     hardcoded_tables
1100     lsp
1101     lzo
1102     mdct
1103     memalign_hack
1104     network
1105     nonfree
1106     pic
1107     rdft
1108     runtime_cpudetect
1109     safe_bitstream_reader
1110     shared
1111     small
1112     sram
1113     static
1114     swscale_alpha
1115     thumb
1116     version3
1117     xmm_clobber_test
1118 "
1119
1120 THREADS_LIST='
1121     pthreads
1122     w32threads
1123 '
1124
1125 ARCH_LIST='
1126     aarch64
1127     alpha
1128     arm
1129     avr32
1130     avr32_ap
1131     avr32_uc
1132     bfin
1133     ia64
1134     m68k
1135     mips
1136     mips64
1137     parisc
1138     ppc
1139     ppc64
1140     s390
1141     sh4
1142     sparc
1143     sparc64
1144     tilegx
1145     tilepro
1146     tomi
1147     x86
1148     x86_32
1149     x86_64
1150 '
1151
1152 ARCH_EXT_LIST_ARM='
1153     armv5te
1154     armv6
1155     armv6t2
1156     neon
1157     vfp
1158     vfpv3
1159 '
1160
1161 ARCH_EXT_LIST_X86='
1162     amd3dnow
1163     amd3dnowext
1164     avx
1165     fma4
1166     mmx
1167     mmxext
1168     sse
1169     sse2
1170     sse3
1171     sse4
1172     sse42
1173     ssse3
1174 '
1175
1176 ARCH_EXT_LIST="
1177     $ARCH_EXT_LIST_ARM
1178     $ARCH_EXT_LIST_X86
1179     altivec
1180     ppc4xx
1181     vis
1182 "
1183
1184 HAVE_LIST_CMDLINE='
1185     inline_asm
1186     symver
1187     yasm
1188 '
1189
1190 HAVE_LIST_PUB='
1191     bigendian
1192     fast_unaligned
1193 '
1194
1195 MATH_FUNCS="
1196     atanf
1197     atan2f
1198     cbrtf
1199     cosf
1200     exp2
1201     exp2f
1202     expf
1203     isinf
1204     isnan
1205     ldexpf
1206     llrint
1207     llrintf
1208     log2
1209     log2f
1210     log10f
1211     lrint
1212     lrintf
1213     powf
1214     rint
1215     round
1216     roundf
1217     sinf
1218     trunc
1219     truncf
1220 "
1221
1222 HAVE_LIST="
1223     $ARCH_EXT_LIST
1224     $(add_suffix _external $ARCH_EXT_LIST)
1225     $(add_suffix _inline   $ARCH_EXT_LIST)
1226     $HAVE_LIST_CMDLINE
1227     $HAVE_LIST_PUB
1228     $THREADS_LIST
1229     $MATH_FUNCS
1230     aligned_malloc
1231     aligned_stack
1232     alsa_asoundlib_h
1233     altivec_h
1234     arpa_inet_h
1235     asm_mod_q
1236     asm_mod_y
1237     attribute_may_alias
1238     attribute_packed
1239     cdio_paranoia_h
1240     cdio_paranoia_paranoia_h
1241     closesocket
1242     cmov
1243     CommandLineToArgvW
1244     cpunop
1245     CryptGenRandom
1246     dcbzl
1247     dev_bktr_ioctl_bt848_h
1248     dev_bktr_ioctl_meteor_h
1249     dev_ic_bt8xx_h
1250     dev_video_bktr_ioctl_bt848_h
1251     dev_video_meteor_ioctl_meteor_h
1252     direct_h
1253     dlfcn_h
1254     dlopen
1255     dos_paths
1256     dxva_h
1257     ebp_available
1258     ebx_available
1259     fast_64bit
1260     fast_clz
1261     fast_cmov
1262     fcntl
1263     fork
1264     getaddrinfo
1265     gethrtime
1266     getopt
1267     GetProcessAffinityMask
1268     GetProcessMemoryInfo
1269     GetProcessTimes
1270     GetSystemTimeAsFileTime
1271     getrusage
1272     getservbyport
1273     gettimeofday
1274     gnu_as
1275     gsm_h
1276     ibm_asm
1277     inet_aton
1278     io_h
1279     isatty
1280     jack_port_get_latency_range
1281     ldbrx
1282     libdc1394_1
1283     libdc1394_2
1284     local_aligned_16
1285     local_aligned_8
1286     localtime_r
1287     loongson
1288     machine_ioctl_bt848_h
1289     machine_ioctl_meteor_h
1290     machine_rw_barrier
1291     malloc_h
1292     MapViewOfFile
1293     memalign
1294     MemoryBarrier
1295     mkstemp
1296     mm_empty
1297     mmap
1298     mprotect
1299     msvcrt
1300     nanosleep
1301     poll_h
1302     posix_memalign
1303     rdtsc
1304     sched_getaffinity
1305     sdl
1306     SetConsoleTextAttribute
1307     setmode
1308     setrlimit
1309     Sleep
1310     sndio_h
1311     socklen_t
1312     soundcard_h
1313     strerror_r
1314     strptime
1315     strtok_r
1316     struct_addrinfo
1317     struct_group_source_req
1318     struct_ip_mreq_source
1319     struct_ipv6_mreq
1320     struct_pollfd
1321     struct_rusage_ru_maxrss
1322     struct_sockaddr_in6
1323     struct_sockaddr_sa_len
1324     struct_sockaddr_storage
1325     struct_v4l2_frmivalenum_discrete
1326     symver_asm_label
1327     symver_gnu_asm
1328     sync_val_compare_and_swap
1329     sysconf
1330     sysctl
1331     sys_mman_h
1332     sys_param_h
1333     sys_resource_h
1334     sys_select_h
1335     sys_soundcard_h
1336     sys_time_h
1337     sys_videoio_h
1338     threads
1339     unistd_h
1340     usleep
1341     vfp_args
1342     VirtualAlloc
1343     windows_h
1344     winsock2_h
1345     xform_asm
1346     xmm_clobbers
1347 "
1348
1349 # options emitted with CONFIG_ prefix but not available on the command line
1350 CONFIG_EXTRA="
1351     aandcttables
1352     ac3dsp
1353     audio_frame_queue
1354     gcrypt
1355     golomb
1356     gplv3
1357     h264chroma
1358     h264dsp
1359     h264pred
1360     h264qpel
1361     huffman
1362     lgplv3
1363     lpc
1364     mpegaudio
1365     mpegaudiodsp
1366     mpegvideo
1367     mpegvideoenc
1368     nettle
1369     rangecoder
1370     rtpdec
1371     rtpenc_chain
1372     sinewin
1373     videodsp
1374     vp3dsp
1375 "
1376
1377 CMDLINE_SELECT="
1378     $ARCH_EXT_LIST
1379     $CONFIG_LIST
1380     $HAVE_LIST_CMDLINE
1381     $THREADS_LIST
1382     asm
1383     cross_compile
1384     debug
1385     extra_warnings
1386     logging
1387     lto
1388     optimizations
1389 "
1390
1391 PATHS_LIST='
1392     bindir
1393     datadir
1394     incdir
1395     libdir
1396     mandir
1397     prefix
1398     shlibdir
1399 '
1400
1401 CMDLINE_SET="
1402     $PATHS_LIST
1403     ar
1404     arch
1405     as
1406     build_suffix
1407     cc
1408     cpu
1409     cross_prefix
1410     dep_cc
1411     extra_version
1412     host_cc
1413     host_cflags
1414     host_ld
1415     host_ldflags
1416     host_libs
1417     host_os
1418     ld
1419     logfile
1420     malloc_prefix
1421     nm
1422     optflags
1423     pkg_config
1424     random_seed
1425     samples
1426     sysinclude
1427     sysroot
1428     target_exec
1429     target_os
1430     target_path
1431     toolchain
1432 "
1433
1434 CMDLINE_APPEND="
1435     extra_cflags
1436     host_cppflags
1437 "
1438
1439 # code dependency declarations
1440
1441 # architecture extensions
1442
1443 armv5te_deps="arm"
1444 armv6_deps="arm"
1445 armv6t2_deps="arm"
1446 neon_deps="arm"
1447 vfp_deps="arm"
1448 vfpv3_deps="vfp"
1449
1450 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1451
1452 altivec_deps="ppc"
1453 ppc4xx_deps="ppc"
1454
1455 vis_deps="sparc"
1456
1457 x86_64_suggest="cmov fast_cmov"
1458
1459 amd3dnow_deps="mmx"
1460 amd3dnowext_deps="amd3dnow"
1461 mmx_deps="x86"
1462 mmxext_deps="mmx"
1463 sse_deps="mmxext"
1464 sse2_deps="sse"
1465 sse3_deps="sse2"
1466 ssse3_deps="sse3"
1467 sse4_deps="ssse3"
1468 sse42_deps="sse4"
1469 avx_deps="sse42"
1470 fma4_deps="avx"
1471
1472 mmx_external_deps="yasm"
1473 mmx_inline_deps="inline_asm"
1474 mmx_suggest="mmx_external mmx_inline"
1475
1476 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1477     eval dep=\$${ext}_deps
1478     eval ${ext}_external_deps='"${dep}_external"'
1479     eval ${ext}_inline_deps='"${dep}_inline"'
1480     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1481 done
1482
1483 aligned_stack_if_any="ppc x86"
1484 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1485 fast_clz_if_any="alpha avr32 mips ppc x86"
1486 fast_unaligned_if_any="ppc x86"
1487
1488 inline_asm_deps="!tms470"
1489 need_memalign="altivec neon sse"
1490
1491 symver_if_any="symver_asm_label symver_gnu_asm"
1492
1493 log2_deps="!msvcrt"
1494
1495 # subsystems
1496 dct_select="rdft"
1497 mdct_select="fft"
1498 rdft_select="fft"
1499 mpegaudio_select="mpegaudiodsp"
1500 mpegaudiodsp_select="dct"
1501 mpegvideo_select="videodsp"
1502 mpegvideoenc_select="mpegvideo"
1503
1504 # decoders / encoders
1505 aac_decoder_select="mdct sinewin"
1506 aac_encoder_select="audio_frame_queue mdct sinewin"
1507 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1508 ac3_decoder_select="mdct ac3dsp ac3_parser"
1509 ac3_encoder_select="mdct ac3dsp"
1510 ac3_fixed_encoder_select="mdct ac3dsp"
1511 alac_encoder_select="lpc"
1512 amrnb_decoder_select="lsp"
1513 amrwb_decoder_select="lsp"
1514 atrac1_decoder_select="mdct sinewin"
1515 atrac3_decoder_select="mdct"
1516 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1517 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1518 cavs_decoder_select="golomb h264chroma videodsp"
1519 comfortnoise_encoder_select="lpc"
1520 cook_decoder_select="mdct sinewin"
1521 cscd_decoder_select="lzo"
1522 cscd_decoder_suggest="zlib"
1523 dca_decoder_select="mdct"
1524 dnxhd_encoder_select="aandcttables mpegvideoenc"
1525 dxa_decoder_select="zlib"
1526 eac3_decoder_select="ac3_decoder"
1527 eac3_encoder_select="ac3_encoder"
1528 eamad_decoder_select="aandcttables mpegvideo"
1529 eatgq_decoder_select="aandcttables"
1530 eatqi_decoder_select="aandcttables mpegvideo"
1531 ffv1_decoder_select="golomb rangecoder"
1532 ffv1_encoder_select="rangecoder"
1533 ffvhuff_encoder_select="huffman"
1534 flac_decoder_select="golomb"
1535 flac_encoder_select="golomb lpc"
1536 flashsv_decoder_select="zlib"
1537 flashsv_encoder_select="zlib"
1538 flashsv2_decoder_select="zlib"
1539 flv_decoder_select="h263_decoder"
1540 flv_encoder_select="h263_encoder"
1541 fraps_decoder_select="huffman"
1542 h261_decoder_select="error_resilience mpegvideo"
1543 h261_encoder_select="aandcttables mpegvideoenc"
1544 h263_decoder_select="error_resilience h263_parser mpegvideo"
1545 h263_encoder_select="aandcttables mpegvideoenc"
1546 h263i_decoder_select="h263_decoder"
1547 h263p_encoder_select="h263_encoder"
1548 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1549 h264_decoder_suggest="error_resilience"
1550 huffyuv_encoder_select="huffman"
1551 iac_decoder_select="fft mdct sinewin"
1552 imc_decoder_select="fft mdct sinewin"
1553 jpegls_decoder_select="golomb"
1554 jpegls_encoder_select="golomb"
1555 ljpeg_encoder_select="aandcttables mpegvideoenc"
1556 loco_decoder_select="golomb"
1557 mdec_decoder_select="error_resilience mpegvideo"
1558 mjpeg_encoder_select="aandcttables mpegvideoenc"
1559 mlp_decoder_select="mlp_parser"
1560 mp1_decoder_select="mpegaudio"
1561 mp1float_decoder_select="mpegaudio"
1562 mp2_decoder_select="mpegaudio"
1563 mp2float_decoder_select="mpegaudio"
1564 mp3_decoder_select="mpegaudio"
1565 mp3adu_decoder_select="mpegaudio"
1566 mp3adufloat_decoder_select="mpegaudio"
1567 mp3float_decoder_select="mpegaudio"
1568 mp3on4_decoder_select="mpegaudio"
1569 mp3on4float_decoder_select="mpegaudio"
1570 mpc7_decoder_select="mpegaudiodsp"
1571 mpc8_decoder_select="mpegaudiodsp"
1572 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1573 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1574 mpeg1video_decoder_select="error_resilience mpegvideo"
1575 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1576 mpeg2video_decoder_select="error_resilience mpegvideo"
1577 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1578 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1579 mpeg4_encoder_select="h263_encoder"
1580 msmpeg4v1_decoder_select="h263_decoder"
1581 msmpeg4v2_decoder_select="h263_decoder"
1582 msmpeg4v2_encoder_select="h263_encoder"
1583 msmpeg4v3_decoder_select="h263_decoder"
1584 msmpeg4v3_encoder_select="h263_encoder"
1585 mss2_decoder_select="error_resilience vc1_decoder"
1586 nellymoser_decoder_select="mdct sinewin"
1587 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1588 nuv_decoder_select="lzo"
1589 png_decoder_select="zlib"
1590 png_encoder_select="zlib"
1591 qcelp_decoder_select="lsp"
1592 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1593 ra_144_encoder_select="audio_frame_queue lpc"
1594 ralf_decoder_select="golomb"
1595 rv10_decoder_select="error_resilience h263_decoder"
1596 rv10_encoder_select="h263_encoder"
1597 rv20_decoder_select="error_resilience h263_decoder"
1598 rv20_encoder_select="h263_encoder"
1599 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1600 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1601 shorten_decoder_select="golomb"
1602 sipr_decoder_select="lsp"
1603 svq1_encoder_select="aandcttables mpegvideoenc"
1604 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1605 svq3_decoder_suggest="error_resilience 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="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"
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 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1762 rtsp_demuxer_select="http_protocol rtpdec"
1763 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1764 sap_demuxer_select="sdp_demuxer"
1765 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1766 sdp_demuxer_select="rtpdec"
1767 smoothstreaming_muxer_select="ismv_muxer"
1768 spdif_muxer_select="aac_parser"
1769 tak_demuxer_select="tak_parser"
1770 tg2_muxer_select="mov_muxer"
1771 tgp_muxer_select="mov_muxer"
1772 w64_demuxer_deps="wav_demuxer"
1773
1774 # indevs / outdevs
1775 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1776 alsa_outdev_deps="alsa_asoundlib_h"
1777 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1778 dv1394_indev_deps="dv1394 dv_demuxer"
1779 fbdev_indev_deps="linux_fb_h"
1780 jack_indev_deps="jack_jack_h"
1781 libcdio_indev_deps="libcdio"
1782 libdc1394_indev_deps="libdc1394"
1783 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1784 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1785 pulse_indev_deps="libpulse"
1786 sndio_indev_deps="sndio_h"
1787 sndio_outdev_deps="sndio_h"
1788 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1789 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1790 vfwcap_indev_extralibs="-lavicap32"
1791 x11grab_indev_deps="x11grab XShmCreateImage"
1792
1793 # protocols
1794 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1795 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1796 ffrtmpcrypt_protocol_select="tcp_protocol"
1797 ffrtmphttp_protocol_deps="!librtmp_protocol"
1798 ffrtmphttp_protocol_select="http_protocol"
1799 gopher_protocol_select="network"
1800 httpproxy_protocol_select="tcp_protocol"
1801 http_protocol_select="tcp_protocol"
1802 https_protocol_select="tls_protocol"
1803 librtmp_protocol_deps="librtmp"
1804 librtmpe_protocol_deps="librtmp"
1805 librtmps_protocol_deps="librtmp"
1806 librtmpt_protocol_deps="librtmp"
1807 librtmpte_protocol_deps="librtmp"
1808 mmsh_protocol_select="http_protocol"
1809 mmst_protocol_select="network"
1810 rtmp_protocol_deps="!librtmp_protocol"
1811 rtmp_protocol_select="tcp_protocol"
1812 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1813 rtmps_protocol_deps="!librtmp_protocol"
1814 rtmps_protocol_select="tls_protocol"
1815 rtmpt_protocol_select="ffrtmphttp_protocol"
1816 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1817 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1818 rtp_protocol_select="udp_protocol"
1819 sctp_protocol_deps="struct_sctp_event_subscribe"
1820 sctp_protocol_select="network"
1821 srtp_protocol_select="rtp_protocol"
1822 tcp_protocol_select="network"
1823 tls_protocol_deps_any="openssl gnutls"
1824 tls_protocol_select="tcp_protocol"
1825 udp_protocol_select="network"
1826
1827 # filters
1828 blackframe_filter_deps="gpl"
1829 boxblur_filter_deps="gpl"
1830 cropdetect_filter_deps="gpl"
1831 delogo_filter_deps="gpl"
1832 drawtext_filter_deps="libfreetype"
1833 frei0r_filter_deps="frei0r dlopen strtok_r"
1834 frei0r_filter_extralibs='$ldl'
1835 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1836 frei0r_src_filter_extralibs='$ldl'
1837 hqdn3d_filter_deps="gpl"
1838 resample_filter_deps="avresample"
1839 ocv_filter_deps="libopencv"
1840 scale_filter_deps="swscale"
1841 yadif_filter_deps="gpl"
1842
1843 # libraries
1844 avcodec_deps="avutil"
1845 avdevice_deps="avutil avcodec avformat"
1846 avfilter_deps="avutil"
1847 avformat_deps="avutil avcodec"
1848 avresample_deps="avutil"
1849 swscale_deps="avutil"
1850
1851 # programs
1852 avconv_deps="avcodec avfilter avformat avresample swscale"
1853 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1854                fps_filter null_filter resample_filter scale_filter
1855                setpts_filter"
1856 avplay_deps="avcodec avformat avresample swscale sdl"
1857 avplay_select="rdft"
1858 avprobe_deps="avcodec avformat"
1859 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1860 avserver_extralibs='$ldl'
1861
1862 doc_deps="texi2html"
1863
1864 # default parameters
1865
1866 logfile="config.log"
1867
1868 # installation paths
1869 prefix_default="/usr/local"
1870 bindir_default='${prefix}/bin'
1871 datadir_default='${prefix}/share/avconv'
1872 incdir_default='${prefix}/include'
1873 libdir_default='${prefix}/lib'
1874 mandir_default='${prefix}/share/man'
1875 shlibdir_default="$libdir_default"
1876
1877 # toolchain
1878 ar_default="ar"
1879 cc_default="gcc"
1880 host_cc_default="gcc"
1881 cp_f="cp -f"
1882 ln_s="ln -s -f"
1883 nm_default="nm -g"
1884 objformat="elf"
1885 pkg_config_default=pkg-config
1886 ranlib="ranlib"
1887 yasmexe="yasm"
1888
1889 nogas=":"
1890
1891 # machine
1892 arch_default=$(uname -m)
1893 cpu="generic"
1894
1895 # OS
1896 target_os_default=$(tolower $(uname -s))
1897 host_os=$target_os_default
1898
1899 # configurable options
1900 enable $LIBRARY_LIST $PROGRAM_LIST
1901
1902 enable asm
1903 enable debug
1904 enable doc
1905 enable optimizations
1906 enable safe_bitstream_reader
1907 enable static
1908 enable swscale_alpha
1909
1910 # By default, enable only those hwaccels that have no external dependencies.
1911 enable dxva2 vdpau
1912
1913 # build settings
1914 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1915 AVSERVERLDFLAGS=-Wl,-E
1916 LIBPREF="lib"
1917 LIBSUF=".a"
1918 FULLNAME='$(NAME)$(BUILDSUF)'
1919 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1920 SLIBPREF="lib"
1921 SLIBSUF=".so"
1922 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1923 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1924 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1925 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1926 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1927 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1928
1929 asflags_filter=echo
1930 cflags_filter=echo
1931 ldflags_filter=echo
1932
1933 AS_C='-c'
1934 AS_O='-o $@'
1935 CC_C='-c'
1936 CC_E='-E -o $@'
1937 CC_O='-o $@'
1938 LD_O='-o $@'
1939 LD_LIB='-l%'
1940 LD_PATH='-L'
1941 HOSTCC_C='-c'
1942 HOSTCC_O='-o $@'
1943 HOSTLD_O='-o $@'
1944
1945 host_cflags='-O3 -g'
1946 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1947 host_libs='-lm'
1948 host_cflags_filter=echo
1949 host_ldflags_filter=echo
1950
1951 target_path='$(CURDIR)'
1952
1953 # since the object filename is not given with the -MM flag, the compiler
1954 # is only able to print the basename, and we must add the path ourselves
1955 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1956 DEPFLAGS='-MM'
1957
1958 # find source path
1959 if test -f configure; then
1960     source_path=.
1961 else
1962     source_path=$(cd $(dirname "$0"); pwd)
1963     echo "$source_path" | grep -q '[[:blank:]]' &&
1964         die "Out of tree builds are impossible with whitespace in source path."
1965     test -e "$source_path/config.h" &&
1966         die "Out of tree builds are impossible with config.h in source dir."
1967 fi
1968
1969 for v in "$@"; do
1970     r=${v#*=}
1971     l=${v%"$r"}
1972     r=$(sh_quote "$r")
1973     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1974 done
1975
1976 find_things(){
1977     thing=$1
1978     pattern=$2
1979     file=$source_path/$3
1980     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1981 }
1982
1983 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1984 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1985 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1986 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1987 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1988 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1989 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1990 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1991 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1992 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1993 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1994
1995 ALL_COMPONENTS="
1996     $BSF_LIST
1997     $DECODER_LIST
1998     $DEMUXER_LIST
1999     $ENCODER_LIST
2000     $FILTER_LIST
2001     $HWACCEL_LIST
2002     $INDEV_LIST
2003     $MUXER_LIST
2004     $OUTDEV_LIST
2005     $PARSER_LIST
2006     $PROTOCOL_LIST
2007 "
2008
2009 for n in $COMPONENT_LIST; do
2010     v=$(toupper ${n%s})_LIST
2011     eval enable \$$v
2012     eval ${n}_if_any="\$$v"
2013 done
2014
2015 enable $ARCH_EXT_LIST
2016
2017 die_unknown(){
2018     echo "Unknown option \"$1\"."
2019     echo "See $0 --help for available options."
2020     exit 1
2021 }
2022
2023 print_3_columns() {
2024     cat | tr ' ' '\n' | sort | pr -r -3 -t
2025 }
2026
2027 show_list() {
2028     suffix=_$1
2029     shift
2030     echo $* | sed s/$suffix//g | print_3_columns
2031     exit 0
2032 }
2033
2034 rand_list(){
2035     IFS=', '
2036     set -- $*
2037     unset IFS
2038     for thing; do
2039         comp=${thing%:*}
2040         prob=${thing#$comp}
2041         prob=${prob#:}
2042         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2043         echo "prob ${prob:-0.5}"
2044         printf '%s\n' $comp
2045     done
2046 }
2047
2048 do_random(){
2049     action=$1
2050     shift
2051     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2052     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2053 }
2054
2055 for opt do
2056     optval="${opt#*=}"
2057     case "$opt" in
2058         --extra-ldflags=*)
2059             add_ldflags $optval
2060         ;;
2061         --extra-libs=*)
2062             add_extralibs $optval
2063         ;;
2064         --disable-devices)
2065             disable $INDEV_LIST $OUTDEV_LIST
2066         ;;
2067         --enable-debug=*)
2068             debuglevel="$optval"
2069         ;;
2070         --disable-programs)
2071             disable $PROGRAM_LIST
2072         ;;
2073         --disable-everything)
2074             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2075         ;;
2076         --disable-all)
2077             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2078             disable $LIBRARY_LIST $PROGRAM_LIST doc
2079         ;;
2080         --enable-random|--disable-random)
2081             action=${opt%%-random}
2082             do_random ${action#--} $COMPONENT_LIST
2083         ;;
2084         --enable-random=*|--disable-random=*)
2085             action=${opt%%-random=*}
2086             do_random ${action#--} $optval
2087         ;;
2088         --enable-*=*|--disable-*=*)
2089             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2090             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2091             eval list=\$$(toupper $thing)_LIST
2092             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2093             $action $(filter "$name" $list)
2094         ;;
2095         --enable-?*|--disable-?*)
2096             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2097             if is_in $option $COMPONENT_LIST; then
2098                 test $action = disable && action=unset
2099                 eval $action \$$(toupper ${option%s})_LIST
2100             elif is_in $option $CMDLINE_SELECT; then
2101                 $action $option
2102             else
2103                 die_unknown $opt
2104             fi
2105         ;;
2106         --list-*)
2107             NAME="${opt#--list-}"
2108             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2109             NAME=${NAME%s}
2110             eval show_list $NAME \$$(toupper $NAME)_LIST
2111         ;;
2112         --help|-h) show_help
2113         ;;
2114         *)
2115             optname="${opt%%=*}"
2116             optname="${optname#--}"
2117             optname=$(echo "$optname" | sed 's/-/_/g')
2118             if is_in $optname $CMDLINE_SET; then
2119                 eval $optname='$optval'
2120             elif is_in $optname $CMDLINE_APPEND; then
2121                 append $optname "$optval"
2122             else
2123                 die_unknown $opt
2124             fi
2125         ;;
2126     esac
2127 done
2128
2129 disabled logging && logfile=/dev/null
2130
2131 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2132 set >> $logfile
2133
2134 test -n "$cross_prefix" && enable cross_compile
2135
2136 if enabled cross_compile; then
2137     test -n "$arch" && test -n "$target_os" ||
2138         die "Must specify target arch and OS when cross-compiling"
2139 fi
2140
2141 ar_default="${cross_prefix}${ar_default}"
2142 cc_default="${cross_prefix}${cc_default}"
2143 nm_default="${cross_prefix}${nm_default}"
2144 pkg_config_default="${cross_prefix}${pkg_config_default}"
2145 ranlib="${cross_prefix}${ranlib}"
2146
2147 sysinclude_default="${sysroot}/usr/include"
2148
2149 case "$toolchain" in
2150     clang-asan)
2151         cc_default="clang"
2152         add_cflags  -faddress-sanitizer
2153         add_ldflags -faddress-sanitizer
2154     ;;
2155     clang-tsan)
2156         cc_default="clang"
2157         add_cflags  -fthread-sanitizer
2158         add_ldflags -fthread-sanitizer
2159     ;;
2160     msvc)
2161         cc_default="c99wrap cl"
2162         ld_default="c99wrap link"
2163         nm_default="dumpbin -symbols"
2164         ar_default="lib"
2165         target_os_default="win32"
2166     ;;
2167     ?*)
2168         die "Unknown toolchain $toolchain"
2169     ;;
2170 esac
2171
2172 set_default arch cc pkg_config sysinclude target_os
2173 enabled cross_compile || host_cc_default=$cc
2174 set_default host_cc
2175
2176 if ! $pkg_config --version >/dev/null 2>&1; then
2177     warn "$pkg_config not found, library detection may fail."
2178     pkg_config=false
2179 fi
2180
2181 exesuf() {
2182     case $1 in
2183         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2184     esac
2185 }
2186
2187 EXESUF=$(exesuf $target_os)
2188 HOSTEXESUF=$(exesuf $host_os)
2189
2190 # set temporary file name
2191 : ${TMPDIR:=$TEMPDIR}
2192 : ${TMPDIR:=$TMP}
2193 : ${TMPDIR:=/tmp}
2194
2195 if ! check_cmd mktemp -u XXXXXX; then
2196     # simple replacement for missing mktemp
2197     # NOT SAFE FOR GENERAL USE
2198     mktemp(){
2199         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2200     }
2201 fi
2202
2203 tmpfile(){
2204     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2205         (set -C; exec > $tmp) 2>/dev/null ||
2206         die "Unable to create temporary file in $TMPDIR."
2207     append TMPFILES $tmp
2208     eval $1=$tmp
2209 }
2210
2211 trap 'rm -f -- $TMPFILES' EXIT
2212
2213 tmpfile TMPASM .asm
2214 tmpfile TMPC   .c
2215 tmpfile TMPE   $EXESUF
2216 tmpfile TMPH   .h
2217 tmpfile TMPO   .o
2218 tmpfile TMPS   .S
2219 tmpfile TMPSH  .sh
2220 tmpfile TMPV   .ver
2221
2222 unset -f mktemp
2223
2224 chmod +x $TMPE
2225
2226 # make sure we can execute files in $TMPDIR
2227 cat > $TMPSH 2>> $logfile <<EOF
2228 #! /bin/sh
2229 EOF
2230 chmod +x $TMPSH >> $logfile 2>&1
2231 if ! $TMPSH >> $logfile 2>&1; then
2232     cat <<EOF
2233 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2234 variable to another directory and make sure that it is not mounted noexec.
2235 EOF
2236     die "Sanity test failed."
2237 fi
2238
2239 ccc_flags(){
2240     for flag; do
2241         case $flag in
2242             -std=c99)           echo -c99                       ;;
2243             -mcpu=*)            echo -arch ${flag#*=}           ;;
2244             -mieee)             echo -ieee                      ;;
2245             -O*|-fast)          echo $flag                      ;;
2246             -fno-math-errno)    echo -assume nomath_errno       ;;
2247             -g)                 echo -g3                        ;;
2248             -Wall)              echo -msg_enable level2         ;;
2249             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2250             -Wl,*)              echo $flag                      ;;
2251             -f*|-W*)                                            ;;
2252             *)                  echo $flag                      ;;
2253         esac
2254    done
2255 }
2256
2257 msvc_flags(){
2258     for flag; do
2259         case $flag in
2260             -fomit-frame-pointer) echo -Oy ;;
2261             -g)                   echo -Z7 ;;
2262             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2263                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2264                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2265                                        -wd4996 -wd4273 ;;
2266             -std=c99)             ;;
2267             -fno-math-errno)      ;;
2268             -fno-common)          ;;
2269             -fno-signed-zeros)    ;;
2270             -fPIC)                ;;
2271             -lz)                  echo zlib.lib ;;
2272             -lavifil32)           echo vfw32.lib ;;
2273             -lavicap32)           echo vfw32.lib user32.lib ;;
2274             -l*)                  echo ${flag#-l}.lib ;;
2275             *)                    echo $flag ;;
2276         esac
2277     done
2278 }
2279
2280 pgi_flags(){
2281     for flag; do
2282         case $flag in
2283             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2284             -fomit-frame-pointer) echo -Mnoframe ;;
2285             -g)                   echo -gopt ;;
2286             *)                    echo $flag ;;
2287         esac
2288     done
2289 }
2290
2291 suncc_flags(){
2292     for flag; do
2293         case $flag in
2294             -march=*|-mcpu=*)
2295                 case "${flag#*=}" in
2296                     native)                   echo -xtarget=native       ;;
2297                     v9|niagara)               echo -xarch=sparc          ;;
2298                     ultrasparc)               echo -xarch=sparcvis       ;;
2299                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2300                     i586|pentium)             echo -xchip=pentium        ;;
2301                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2302                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2303                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2304                     pentium4*)          echo -xtarget=pentium4           ;;
2305                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2306                     *-sse3)             echo -xarch=sse3                 ;;
2307                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2308                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2309                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2310                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2311                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2312                     k8|opteron|athlon64|athlon-fx)
2313                                               echo -xarch=sse2a          ;;
2314                     athlon*)                  echo -xarch=pentium_proa   ;;
2315                 esac
2316                 ;;
2317             -std=c99)             echo -xc99              ;;
2318             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2319             -fPIC)                echo -KPIC -xcode=pic32 ;;
2320             -W*,*)                echo $flag              ;;
2321             -f*-*|-W*|-mimpure-text)                      ;;
2322             -shared)              echo -G                 ;;
2323             *)                    echo $flag              ;;
2324         esac
2325     done
2326 }
2327
2328 tms470_flags(){
2329     for flag; do
2330         case $flag in
2331             -march=*|-mcpu=*)
2332                 case "${flag#*=}" in
2333                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2334                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2335                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2336                     armv6*|arm11*)          echo -mv=6   ;;
2337                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2338                                             echo -mv=5e  ;;
2339                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2340                 esac
2341                 ;;
2342             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2343             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2344             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2345             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2346             -msoft-float)   echo --float_support=vfplib       ;;
2347             -O[0-3]|-mf=*)  echo $flag                        ;;
2348             -g)             echo -g -mn                       ;;
2349             -pds=*)         echo $flag                        ;;
2350             -D*|-I*)        echo $flag                        ;;
2351             --gcc|--abi=*)  echo $flag                        ;;
2352             -me)            echo $flag                        ;;
2353         esac
2354     done
2355 }
2356
2357 probe_cc(){
2358     pfx=$1
2359     _cc=$2
2360
2361     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2362     unset _ld_o _ldflags _ld_lib _ld_path
2363     unset _depflags _DEPCMD _DEPFLAGS
2364     _flags_filter=echo
2365
2366     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2367         _type=llvm_gcc
2368         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2369         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2370         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2371         _cflags_speed='-O3'
2372         _cflags_size='-Os'
2373     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2374         _type=gcc
2375         gcc_version=$($_cc --version | head -n1)
2376         gcc_basever=$($_cc -dumpversion)
2377         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2378         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2379         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2380         if ! $_cc -dumpversion | grep -q '^2\.'; then
2381             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2382         fi
2383         _cflags_speed='-O3'
2384         _cflags_size='-Os'
2385     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2386         _type=icc
2387         _ident=$($_cc --version | head -n1)
2388         _depflags='-MMD'
2389         _cflags_speed='-O3'
2390         _cflags_size='-Os'
2391         _cflags_noopt='-O1'
2392     elif $_cc -v 2>&1 | grep -q xlc; then
2393         _type=xlc
2394         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2395         _cflags_speed='-O5'
2396         _cflags_size='-O5 -qcompact'
2397     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2398         _type=ccc
2399         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2400         _DEPFLAGS='-M'
2401         _cflags_speed='-fast'
2402         _cflags_size='-O1'
2403         _flags_filter=ccc_flags
2404     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2405         test -d "$sysroot" || die "No valid sysroot specified."
2406         _type=armcc
2407         _ident=$($_cc --vsn | head -n1)
2408         armcc_conf="$PWD/armcc.conf"
2409         $_cc --arm_linux_configure                 \
2410              --arm_linux_config_file="$armcc_conf" \
2411              --configure_sysroot="$sysroot"        \
2412              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2413              die "Error creating armcc configuration file."
2414         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2415         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2416         as_default="${cross_prefix}gcc"
2417         _depflags='-MMD'
2418         _cflags_speed='-O3'
2419         _cflags_size='-Os'
2420     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2421         _type=tms470
2422         _ident=$($_cc -version | head -n1 | tr -s ' ')
2423         _flags='--gcc --abi=eabi -me'
2424         _cc_e='-ppl -fe=$@'
2425         _cc_o='-fe=$@'
2426         _depflags='-ppa -ppd=$(@:.o=.d)'
2427         _cflags_speed='-O3 -mf=5'
2428         _cflags_size='-O3 -mf=2'
2429         _flags_filter=tms470_flags
2430     elif $_cc -v 2>&1 | grep -q clang; then
2431         _type=clang
2432         _ident=$($_cc --version | head -n1)
2433         _depflags='-MMD'
2434         _cflags_speed='-O3'
2435         _cflags_size='-Os'
2436     elif $_cc -V 2>&1 | grep -q Sun; then
2437         _type=suncc
2438         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2439         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2440         _DEPFLAGS='-xM1 -xc99'
2441         _ldflags='-std=c99'
2442         _cflags_speed='-O5'
2443         _cflags_size='-O5 -xspace'
2444         _flags_filter=suncc_flags
2445     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2446         _type=pathscale
2447         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2448         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2449         _cflags_speed='-O2'
2450         _cflags_size='-Os'
2451         _flags_filter='filter_out -Wdisabled-optimization'
2452     elif $_cc -v 2>&1 | grep -q Open64; then
2453         _type=open64
2454         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2455         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2456         _cflags_speed='-O2'
2457         _cflags_size='-Os'
2458         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2459     elif $_cc -V 2>&1 | grep -q Portland; then
2460         _type=pgi
2461         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2462         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2463         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2464         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2465         _cflags_noopt="-O1"
2466         _flags_filter=pgi_flags
2467     elif $_cc 2>&1 | grep -q Microsoft; then
2468         _type=msvc
2469         _ident=$($cc 2>&1 | head -n1)
2470         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2471         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2472         _cflags_speed="-O2"
2473         _cflags_size="-O1"
2474         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2475         if $_cc 2>&1 | grep -q Linker; then
2476             _ld_o='-out $@'
2477         else
2478             _ld_o='-Fe$@'
2479         fi
2480         _cc_o='-Fo $@'
2481         _cc_e='-P -Fi $@'
2482         _flags_filter=msvc_flags
2483         _ld_lib='lib%.a'
2484         _ld_path='-libpath:'
2485         _flags='-nologo'
2486         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2487         if [ $pfx = hostcc ]; then
2488             append _cflags -Dsnprintf=_snprintf
2489         fi
2490     fi
2491
2492     eval ${pfx}_type=\$_type
2493     eval ${pfx}_ident=\$_ident
2494 }
2495
2496 set_ccvars(){
2497     eval ${1}_C=\${_cc_c-\${${1}_C}}
2498     eval ${1}_E=\${_cc_e-\${${1}_E}}
2499     eval ${1}_O=\${_cc_o-\${${1}_O}}
2500
2501     if [ -n "$_depflags" ]; then
2502         eval ${1}_DEPFLAGS=\$_depflags
2503     else
2504         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2505         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2506         eval DEP${1}FLAGS=\$_flags
2507     fi
2508 }
2509
2510 probe_cc cc "$cc"
2511 cflags_filter=$_flags_filter
2512 cflags_speed=$_cflags_speed
2513 cflags_size=$_cflags_size
2514 cflags_noopt=$_cflags_noopt
2515 add_cflags $_flags $_cflags
2516 cc_ldflags=$_ldflags
2517 set_ccvars CC
2518
2519 probe_cc hostcc "$host_cc"
2520 host_cflags_filter=$_flags_filter
2521 add_host_cflags  $_flags $_cflags
2522 set_ccvars HOSTCC
2523
2524 test -n "$cc_type" && enable $cc_type ||
2525     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2526
2527 : ${as_default:=$cc}
2528 : ${dep_cc_default:=$cc}
2529 : ${ld_default:=$cc}
2530 : ${host_ld_default:=$host_cc}
2531 set_default ar as dep_cc ld host_ld
2532
2533 probe_cc as "$as"
2534 asflags_filter=$_flags_filter
2535 add_asflags $_flags $_cflags
2536 set_ccvars AS
2537
2538 probe_cc ld "$ld"
2539 ldflags_filter=$_flags_filter
2540 add_ldflags $_flags $_ldflags
2541 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2542 LD_O=${_ld_o-$LD_O}
2543 LD_LIB=${_ld_lib-$LD_LIB}
2544 LD_PATH=${_ld_path-$LD_PATH}
2545
2546 probe_cc hostld "$host_ld"
2547 host_ldflags_filter=$_flags_filter
2548 add_host_ldflags $_flags $_ldflags
2549 HOSTLD_O=${_ld_o-$HOSTLD_O}
2550
2551 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2552     probe_cc depcc "$dep_cc"
2553     CCDEP=${_DEPCMD:-$DEPCMD}
2554     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2555     DEPCCFLAGS=$_flags
2556 fi
2557
2558 if $ar 2>&1 | grep -q Microsoft; then
2559     arflags="-nologo"
2560     ar_o='-out:$@'
2561 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2562     arflags="rq"
2563     ar_o='$@'
2564 else
2565     arflags="rc"
2566     ar_o='$@'
2567 fi
2568
2569 add_cflags $extra_cflags
2570 add_asflags $extra_cflags
2571
2572 if test -n "$sysroot"; then
2573     case "$cc_type" in
2574         gcc|llvm_gcc|clang)
2575             add_cppflags --sysroot="$sysroot"
2576             add_ldflags --sysroot="$sysroot"
2577         ;;
2578         tms470)
2579             add_cppflags -I"$sysinclude"
2580             add_ldflags  --sysroot="$sysroot"
2581         ;;
2582     esac
2583 fi
2584
2585 if test "$cpu" = host; then
2586     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2587
2588     case "$cc_type" in
2589         gcc|llvm_gcc)
2590             check_native(){
2591                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2592                 sed -n "/cc1.*$1=/{
2593                             s/.*$1=\\([^ ]*\\).*/\\1/
2594                             p
2595                             q
2596                         }" $TMPE
2597             }
2598             cpu=$(check_native -march || check_native -mcpu)
2599         ;;
2600     esac
2601
2602     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2603 fi
2604
2605 # Deal with common $arch aliases
2606 case "$arch" in
2607     aarch64|arm64)
2608         arch="aarch64"
2609     ;;
2610     arm*)
2611         arch="arm"
2612     ;;
2613     mips*|IP*)
2614         arch="mips"
2615     ;;
2616     parisc*|hppa*)
2617         arch="parisc"
2618     ;;
2619     "Power Macintosh"|ppc*|powerpc*)
2620         arch="ppc"
2621     ;;
2622     s390|s390x)
2623         arch="s390"
2624     ;;
2625     sh4|sh)
2626         arch="sh4"
2627     ;;
2628     sun4u|sparc*)
2629         arch="sparc"
2630     ;;
2631     tilegx|tile-gx)
2632         arch="tilegx"
2633     ;;
2634     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2635         arch="x86"
2636     ;;
2637 esac
2638
2639 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2640 enable $arch
2641
2642 # Add processor-specific flags
2643 if enabled aarch64; then
2644
2645     case $cpu in
2646         armv*)
2647             cpuflags="-march=$cpu"
2648         ;;
2649         *)
2650             cpuflags="-mcpu=$cpu"
2651         ;;
2652     esac
2653
2654 elif enabled alpha; then
2655
2656     cpuflags="-mcpu=$cpu"
2657
2658 elif enabled arm; then
2659
2660     check_arm_arch() {
2661         check_cpp_condition stddef.h \
2662             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2663             $cpuflags
2664     }
2665
2666     probe_arm_arch() {
2667         if   check_arm_arch 4;        then echo armv4;
2668         elif check_arm_arch 4T;       then echo armv4t;
2669         elif check_arm_arch 5;        then echo armv5;
2670         elif check_arm_arch 5E;       then echo armv5e;
2671         elif check_arm_arch 5T;       then echo armv5t;
2672         elif check_arm_arch 5TE;      then echo armv5te;
2673         elif check_arm_arch 5TEJ;     then echo armv5te;
2674         elif check_arm_arch 6;        then echo armv6;
2675         elif check_arm_arch 6J;       then echo armv6j;
2676         elif check_arm_arch 6K;       then echo armv6k;
2677         elif check_arm_arch 6Z;       then echo armv6z;
2678         elif check_arm_arch 6ZK;      then echo armv6zk;
2679         elif check_arm_arch 6T2;      then echo armv6t2;
2680         elif check_arm_arch 7;        then echo armv7;
2681         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2682         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2683         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2684         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2685         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2686         fi
2687     }
2688
2689     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2690
2691     case $cpu in
2692         armv*)
2693             cpuflags="-march=$cpu"
2694             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2695         ;;
2696         *)
2697             cpuflags="-mcpu=$cpu"
2698             case $cpu in
2699                 cortex-a*)                               subarch=armv7a  ;;
2700                 cortex-r*)                               subarch=armv7r  ;;
2701                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2702                 arm11*)                                  subarch=armv6   ;;
2703                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2704                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2705                 *)                             subarch=$(probe_arm_arch) ;;
2706             esac
2707         ;;
2708     esac
2709
2710     case "$subarch" in
2711         armv5t*)    enable fast_clz                ;;
2712         armv[6-8]*) enable fast_clz fast_unaligned ;;
2713     esac
2714
2715 elif enabled avr32; then
2716
2717     case $cpu in
2718         ap7[02]0[0-2])
2719             subarch="avr32_ap"
2720             cpuflags="-mpart=$cpu"
2721         ;;
2722         ap)
2723             subarch="avr32_ap"
2724             cpuflags="-march=$cpu"
2725         ;;
2726         uc3[ab]*)
2727             subarch="avr32_uc"
2728             cpuflags="-mcpu=$cpu"
2729         ;;
2730         uc)
2731             subarch="avr32_uc"
2732             cpuflags="-march=$cpu"
2733         ;;
2734     esac
2735
2736 elif enabled bfin; then
2737
2738     cpuflags="-mcpu=$cpu"
2739
2740 elif enabled mips; then
2741
2742     cpuflags="-march=$cpu"
2743
2744 elif enabled ppc; then
2745
2746     case $(tolower $cpu) in
2747         601|ppc601|powerpc601)
2748             cpuflags="-mcpu=601"
2749             disable altivec
2750         ;;
2751         603*|ppc603*|powerpc603*)
2752             cpuflags="-mcpu=603"
2753             disable altivec
2754         ;;
2755         604*|ppc604*|powerpc604*)
2756             cpuflags="-mcpu=604"
2757             disable altivec
2758         ;;
2759         g3|75*|ppc75*|powerpc75*)
2760             cpuflags="-mcpu=750"
2761             disable altivec
2762         ;;
2763         g4|745*|ppc745*|powerpc745*)
2764             cpuflags="-mcpu=7450"
2765         ;;
2766         74*|ppc74*|powerpc74*)
2767             cpuflags="-mcpu=7400"
2768         ;;
2769         g5|970|ppc970|powerpc970)
2770             cpuflags="-mcpu=970"
2771         ;;
2772         power[3-7]*)
2773             cpuflags="-mcpu=$cpu"
2774         ;;
2775         cell)
2776             cpuflags="-mcpu=cell"
2777             enable ldbrx
2778         ;;
2779         e500mc)
2780             cpuflags="-mcpu=e500mc"
2781             disable altivec
2782         ;;
2783         e500v2)
2784             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2785             disable altivec
2786         ;;
2787         e500)
2788             cpuflags="-mcpu=8540 -mhard-float"
2789             disable altivec
2790         ;;
2791     esac
2792
2793 elif enabled sparc; then
2794
2795     case $cpu in
2796         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2797             cpuflags="-mcpu=$cpu"
2798             disable vis
2799         ;;
2800         ultrasparc*|niagara[234])
2801             cpuflags="-mcpu=$cpu"
2802         ;;
2803     esac
2804
2805 elif enabled x86; then
2806
2807     case $cpu in
2808         i[345]86|pentium)
2809             cpuflags="-march=$cpu"
2810             disable mmx
2811         ;;
2812         # targets that do NOT support conditional mov (cmov)
2813         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2814             cpuflags="-march=$cpu"
2815             disable cmov
2816         ;;
2817         # targets that do support conditional mov (cmov)
2818         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2819             cpuflags="-march=$cpu"
2820             enable cmov
2821             enable fast_cmov
2822         ;;
2823         # targets that do support conditional mov but on which it's slow
2824         pentium4|pentium4m|prescott|nocona)
2825             cpuflags="-march=$cpu"
2826             enable cmov
2827             disable fast_cmov
2828         ;;
2829     esac
2830
2831 fi
2832
2833 if [ "$cpu" != generic ]; then
2834     add_cflags  $cpuflags
2835     add_asflags $cpuflags
2836 fi
2837
2838 # compiler sanity check
2839 check_exec <<EOF
2840 int main(void){ return 0; }
2841 EOF
2842 if test "$?" != 0; then
2843     echo "$cc is unable to create an executable file."
2844     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2845         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2846         echo "Only do this if you know what cross compiling means."
2847     fi
2848     die "C compiler test failed."
2849 fi
2850
2851 add_cppflags -D_ISOC99_SOURCE
2852 check_cflags -std=c99
2853 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2854 #include <stdlib.h>
2855 EOF
2856 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2857 #include <stdlib.h>
2858 EOF
2859
2860 check_host_cflags -std=c99
2861 check_host_cflags -Wall
2862
2863 check_64bit(){
2864     arch32=$1
2865     arch64=$2
2866     expr=$3
2867     check_code cc "" "int test[2*($expr) - 1]" &&
2868         subarch=$arch64 || subarch=$arch32
2869 }
2870
2871 case "$arch" in
2872     aarch64|alpha|ia64)
2873         spic=$shared
2874     ;;
2875     mips)
2876         check_64bit mips mips64 '_MIPS_SIM > 1'
2877         spic=$shared
2878     ;;
2879     parisc)
2880         check_64bit parisc parisc64 'sizeof(void *) > 4'
2881         spic=$shared
2882     ;;
2883     ppc)
2884         check_64bit ppc ppc64 'sizeof(void *) > 4'
2885         spic=$shared
2886     ;;
2887     sparc)
2888         check_64bit sparc sparc64 'sizeof(void *) > 4'
2889         spic=$shared
2890     ;;
2891     x86)
2892         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2893         if test "$subarch" = "x86_64"; then
2894             spic=$shared
2895         fi
2896     ;;
2897 esac
2898
2899 enable $subarch
2900 enabled spic && enable pic
2901
2902 # OS specific
2903 case $target_os in
2904     haiku)
2905         prefix_default="/boot/common"
2906         network_extralibs="-lnetwork"
2907         host_libs=
2908         ;;
2909     sunos)
2910         AVSERVERLDFLAGS=""
2911         SHFLAGS='-shared -Wl,-h,$$(@F)'
2912         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2913         network_extralibs="-lsocket -lnsl"
2914         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2915         # When using suncc to build, the Solaris linker will mark
2916         # an executable with each instruction set encountered by
2917         # the Solaris assembler.  As our libraries contain their own
2918         # guards for processor-specific code, instead suppress
2919         # generation of the HWCAPS ELF section on Solaris x86 only.
2920         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2921         nm_default='nm -P -g'
2922         ;;
2923     netbsd)
2924         disable symver
2925         oss_indev_extralibs="-lossaudio"
2926         oss_outdev_extralibs="-lossaudio"
2927         ;;
2928     openbsd|bitrig)
2929         disable symver
2930         SHFLAGS='-shared'
2931         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2932         SLIB_INSTALL_LINKS=
2933         oss_indev_extralibs="-lossaudio"
2934         oss_outdev_extralibs="-lossaudio"
2935         ;;
2936     dragonfly)
2937         disable symver
2938         ;;
2939     freebsd)
2940         ;;
2941     bsd/os)
2942         add_extralibs -lpoll -lgnugetopt
2943         ;;
2944     darwin)
2945         gas="gas-preprocessor.pl $cc"
2946         enabled ppc && add_asflags -force_cpusubtype_ALL
2947         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2948         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2949         add_ldflags -Wl,-dynamic,-search_paths_first
2950         SLIBSUF=".dylib"
2951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2953         AVSERVERLDFLAGS=-Wl,-bind_at_load
2954         objformat="macho"
2955         enabled x86_64 && objformat="macho64"
2956         enabled_any pic shared ||
2957             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2958         ;;
2959     mingw32*)
2960         if test $target_os = "mingw32ce"; then
2961             disable network
2962         else
2963             target_os=mingw32
2964         fi
2965         LIBTARGET=i386
2966         if enabled x86_64; then
2967             LIBTARGET="i386:x86-64"
2968         elif enabled arm; then
2969             LIBTARGET=arm-wince
2970         fi
2971         shlibdir_default="$bindir_default"
2972         SLIBPREF=""
2973         SLIBSUF=".dll"
2974         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2975         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2976         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2978         SLIB_INSTALL_LINKS=
2979         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2980         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2981         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2982         objformat="win32"
2983         dlltool="${cross_prefix}dlltool"
2984         ranlib=:
2985         enable dos_paths
2986         ;;
2987     win32|win64)
2988         if enabled shared; then
2989             # Link to the import library instead of the normal static library
2990             # for shared libs.
2991             LD_LIB='%.lib'
2992             # Cannot build shared and static libraries at the same time with
2993             # MSVC.
2994             disable static
2995         fi
2996         shlibdir_default="$bindir_default"
2997         SLIBPREF=""
2998         SLIBSUF=".dll"
2999         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3000         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3001         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3002         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3003         SLIB_INSTALL_LINKS=
3004         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3005         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3006         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3007         objformat="win32"
3008         ranlib=:
3009         enable dos_paths
3010         ;;
3011     cygwin*)
3012         target_os=cygwin
3013         shlibdir_default="$bindir_default"
3014         SLIBPREF="cyg"
3015         SLIBSUF=".dll"
3016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3018         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3019         SLIB_INSTALL_LINKS=
3020         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3021         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3022         objformat="win32"
3023         enable dos_paths
3024         ;;
3025     *-dos|freedos|opendos)
3026         network_extralibs="-lsocket"
3027         objformat="coff"
3028         enable dos_paths
3029         add_cppflags -U__STRICT_ANSI__
3030         ;;
3031     linux)
3032         enable dv1394
3033         ;;
3034     irix*)
3035         target_os=irix
3036         ranlib="echo ignoring ranlib"
3037         ;;
3038     os/2*)
3039         ln_s="cp -f"
3040         objformat="aout"
3041         add_cppflags -D_GNU_SOURCE
3042         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3043         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3044         AVSERVERLDFLAGS=""
3045         LIBSUF="_s.a"
3046         SLIBPREF=""
3047         SLIBSUF=".dll"
3048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3050         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3051             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3052             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3053             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3054             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3055             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3056         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3057             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3058         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3059         enable dos_paths
3060         ;;
3061     gnu/kfreebsd)
3062         add_cppflags -D_BSD_SOURCE
3063         ;;
3064     gnu)
3065         ;;
3066     qnx)
3067         add_cppflags -D_QNX_SOURCE
3068         network_extralibs="-lsocket"
3069         ;;
3070     symbian)
3071         SLIBSUF=".dll"
3072         enable dos_paths
3073         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3074         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3075         add_ldflags -Wl,--target1-abs,--no-undefined \
3076                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3077                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3078         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3079                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3080                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3081         ;;
3082     osf1)
3083         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3084         AVSERVERLDFLAGS=
3085         ;;
3086     minix)
3087         ;;
3088     plan9)
3089         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3090                      -D_REENTRANT_SOURCE        \
3091                      -D_RESEARCH_SOURCE         \
3092                      -DFD_SETSIZE=96            \
3093                      -DHAVE_SOCK_OPTS
3094         add_compat strtod.o strtod=avpriv_strtod
3095         network_extralibs='-lbsd'
3096         exeobjs=compat/plan9/main.o
3097         disable avserver
3098         cp_f='cp'
3099         ;;
3100     none)
3101         ;;
3102     *)
3103         die "Unknown OS '$target_os'."
3104         ;;
3105 esac
3106
3107 # determine libc flavour
3108
3109 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3110 if check_cpp_condition features.h "defined __UCLIBC__"; then
3111     libc_type=uclibc
3112     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3113 elif check_cpp_condition features.h "defined __GLIBC__"; then
3114     libc_type=glibc
3115     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3116 # MinGW headers can be installed on Cygwin, so check for newlib first.
3117 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3118     libc_type=newlib
3119     add_cppflags -U__STRICT_ANSI__
3120 elif check_header _mingw.h; then
3121     libc_type=mingw
3122     check_cpp_condition _mingw.h \
3123         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3124             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3125         die "ERROR: MinGW runtime version must be >= 3.15."
3126     add_cppflags -U__STRICT_ANSI__
3127 elif check_func_headers stdlib.h _get_doserrno; then
3128     libc_type=msvcrt
3129     add_compat strtod.o strtod=avpriv_strtod
3130     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3131                                  _snprintf=avpriv_snprintf  \
3132                                  vsnprintf=avpriv_vsnprintf
3133 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3134     libc_type=klibc
3135 fi
3136
3137 test -n "$libc_type" && enable $libc_type
3138
3139 # hacks for compiler/libc/os combinations
3140
3141 if enabled_all tms470 glibc; then
3142     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3143     add_cppflags -D__USER_LABEL_PREFIX__=
3144     add_cppflags -D__builtin_memset=memset
3145     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3146     add_cflags   -pds=48    # incompatible redefinition of macro
3147 fi
3148
3149 if enabled_all ccc glibc; then
3150     add_ldflags -Wl,-z,now  # calls to libots crash without this
3151 fi
3152
3153 esc(){
3154     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3155 }
3156
3157 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3158
3159 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3160
3161 set_default $PATHS_LIST
3162 set_default nm
3163
3164 # we need to build at least one lib type
3165 if ! enabled_any static shared; then
3166     cat <<EOF
3167 At least one library type must be built.
3168 Specify --enable-static to build the static libraries or --enable-shared to
3169 build the shared libraries as well. To only build the shared libraries specify
3170 --disable-static in addition to --enable-shared.
3171 EOF
3172     exit 1;
3173 fi
3174
3175 die_license_disabled() {
3176     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3177 }
3178
3179 die_license_disabled gpl libcdio
3180 die_license_disabled gpl libx264
3181 die_license_disabled gpl libxavs
3182 die_license_disabled gpl libxvid
3183 die_license_disabled gpl x11grab
3184
3185 die_license_disabled nonfree libfaac
3186 die_license_disabled nonfree libfdk_aac
3187 die_license_disabled nonfree openssl
3188
3189 die_license_disabled version3 libopencore_amrnb
3190 die_license_disabled version3 libopencore_amrwb
3191 die_license_disabled version3 libvo_aacenc
3192 die_license_disabled version3 libvo_amrwbenc
3193
3194 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3195
3196 disabled optimizations || check_cflags -fomit-frame-pointer
3197
3198 enable_pic() {
3199     enable pic
3200     add_cppflags -DPIC
3201     add_cflags   -fPIC
3202     add_asflags  -fPIC
3203 }
3204
3205 enabled pic && enable_pic
3206
3207 check_cc <<EOF || die "Symbol mangling check failed."
3208 int ff_extern;
3209 EOF
3210 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3211 extern_prefix=${sym%%ff_extern*}
3212
3213 check_cc <<EOF && enable_weak inline_asm
3214 void foo(void) { __asm__ volatile ("" ::); }
3215 EOF
3216
3217 _restrict=
3218 for restrict_keyword in restrict __restrict__ __restrict; do
3219     check_cc <<EOF && _restrict=$restrict_keyword && break
3220 void foo(char * $restrict_keyword p);
3221 EOF
3222 done
3223
3224 check_cc <<EOF && enable attribute_packed
3225 struct { int x; } __attribute__((packed)) x;
3226 EOF
3227
3228 check_cc <<EOF && enable attribute_may_alias
3229 union { int x; } __attribute__((may_alias)) x;
3230 EOF
3231
3232 check_cc <<EOF || die "endian test failed"
3233 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3234 EOF
3235 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3236
3237 if enabled alpha; then
3238
3239     check_cflags -mieee
3240
3241 elif enabled arm; then
3242
3243     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3244     enabled thumb && check_cflags -mthumb || check_cflags -marm
3245     nogas=die
3246
3247     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3248         enable vfp_args
3249     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3250         case "${cross_prefix:-$cc}" in
3251             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3252             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3253 __asm__ (".eabi_attribute 28, 1");
3254 int main(void) { return 0; }
3255 EOF
3256         esac
3257         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3258     fi
3259
3260     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3261     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3262     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3263     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3264     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3265     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3266
3267     [ $target_os = linux ] ||
3268         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3269             $ARCH_EXT_LIST_ARM
3270
3271     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3272     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3273
3274     enabled_all armv6t2 shared !pic && enable_pic
3275
3276 elif enabled mips; then
3277
3278     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3279
3280 elif enabled parisc; then
3281
3282     if enabled gcc; then
3283         case $($cc -dumpversion) in
3284             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3285         esac
3286     fi
3287
3288 elif enabled ppc; then
3289
3290     enable local_aligned_8 local_aligned_16
3291
3292     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3293     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3294     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3295     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3296
3297     # AltiVec flags: The FSF version of GCC differs from the Apple version
3298     if enabled altivec; then
3299         nogas=warn
3300         check_cflags -maltivec -mabi=altivec &&
3301         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3302         check_cflags -faltivec
3303
3304         # check if our compiler supports Motorola AltiVec C API
3305         check_cc <<EOF || disable altivec
3306 $inc_altivec_h
3307 int main(void) {
3308     vector signed int v1 = (vector signed int) { 0 };
3309     vector signed int v2 = (vector signed int) { 1 };
3310     v1 = vec_add(v1, v2);
3311     return 0;
3312 }
3313 EOF
3314
3315         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3316     fi
3317
3318 elif enabled sparc; then
3319
3320     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3321
3322 elif enabled x86; then
3323
3324     check_builtin rdtsc    intrin.h   "__rdtsc()"
3325     check_builtin mm_empty mmintrin.h "_mm_empty()"
3326
3327     enable local_aligned_8 local_aligned_16
3328
3329     # check whether EBP is available on x86
3330     # As 'i' is stored on the stack, this program will crash
3331     # if the base pointer is used to access it because the
3332     # base pointer is cleared in the inline assembly code.
3333     check_exec_crash <<EOF && enable ebp_available
3334 volatile int i=0;
3335 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3336 return i;
3337 EOF
3338
3339     # check whether EBX is available on x86
3340     check_inline_asm ebx_available '""::"b"(0)' &&
3341         check_inline_asm ebx_available '"":::"%ebx"'
3342
3343     # check whether xmm clobbers are supported
3344     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3345
3346     # check whether binutils is new enough to compile SSSE3/MMXEXT
3347     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3348     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3349
3350     if ! disabled_any asm mmx yasm; then
3351         if check_cmd $yasmexe --version; then
3352             enabled x86_64 && yasm_extra="-m amd64"
3353             yasm_debug="-g dwarf2"
3354         elif check_cmd nasm -v; then
3355             yasmexe=nasm
3356             yasm_debug="-g -F dwarf"
3357             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3358         fi
3359
3360         YASMFLAGS="-f $objformat $yasm_extra"
3361         enabled pic               && append YASMFLAGS "-DPIC"
3362         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3363         case "$objformat" in
3364             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3365         esac
3366
3367         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3368             die "yasm not found, use --disable-yasm for a crippled build"
3369         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3370         check_yasm "CPU amdnop" && enable cpunop
3371     fi
3372
3373     case "$cpu" in
3374         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3375             disable fast_clz
3376         ;;
3377     esac
3378
3379 fi
3380
3381 if enabled asm; then
3382     as=${gas:=$as}
3383     check_as <<EOF && enable gnu_as || \
3384         $nogas "GNU assembler not found, install gas-preprocessor"
3385 .macro m n
3386 \n: .int 0
3387 .endm
3388 m x
3389 EOF
3390 fi
3391
3392 check_ldflags -Wl,--as-needed
3393
3394 if check_func dlopen; then
3395     ldl=
3396 elif check_func dlopen -ldl; then
3397     ldl=-ldl
3398 fi
3399
3400 if ! disabled network; then
3401     check_type "sys/types.h sys/socket.h" socklen_t
3402     check_type netdb.h "struct addrinfo"
3403     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3404     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3405     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3406     check_type netinet/in.h "struct sockaddr_in6"
3407     check_type poll.h "struct pollfd"
3408     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3409     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3410     check_type netinet/sctp.h "struct sctp_event_subscribe"
3411     check_func getaddrinfo $network_extralibs
3412     check_func getservbyport $network_extralibs
3413     # Prefer arpa/inet.h over winsock2
3414     if check_header arpa/inet.h ; then
3415         check_func closesocket
3416     elif check_header winsock2.h ; then
3417         check_func_headers winsock2.h closesocket -lws2 &&
3418             network_extralibs="-lws2" ||
3419         { check_func_headers winsock2.h closesocket -lws2_32 &&
3420             network_extralibs="-lws2_32"; }
3421         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3422         check_type ws2tcpip.h socklen_t
3423         check_type ws2tcpip.h "struct addrinfo"
3424         check_type ws2tcpip.h "struct group_source_req"
3425         check_type ws2tcpip.h "struct ip_mreq_source"
3426         check_type ws2tcpip.h "struct ipv6_mreq"
3427         check_type winsock2.h "struct pollfd"
3428         check_type ws2tcpip.h "struct sockaddr_in6"
3429         check_type ws2tcpip.h "struct sockaddr_storage"
3430         check_struct winsock2.h "struct sockaddr" sa_len
3431     else
3432         disable network
3433     fi
3434 fi
3435
3436 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3437 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3438
3439 check_func  fcntl
3440 check_func  fork
3441 check_func  gethrtime
3442 check_func  getopt
3443 check_func  getrusage
3444 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3445 check_func  gettimeofday
3446 check_func  inet_aton $network_extralibs
3447 check_func  isatty
3448 check_func  localtime_r
3449 check_func  ${malloc_prefix}memalign            && enable memalign
3450 check_func  mkstemp
3451 check_func  mmap
3452 check_func  mprotect
3453 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3454 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3455 check_func  setrlimit
3456 check_func  strerror_r
3457 check_func  strptime
3458 check_func  strtok_r
3459 check_func  sched_getaffinity
3460 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3461 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3462 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3463 check_func  sysconf
3464 check_func  sysctl
3465 check_func  usleep
3466 check_func_headers io.h setmode
3467 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3468 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3469 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3470 check_func_headers windows.h GetProcessAffinityMask
3471 check_func_headers windows.h GetProcessTimes
3472 check_func_headers windows.h GetSystemTimeAsFileTime
3473 check_func_headers windows.h MapViewOfFile
3474 check_func_headers windows.h SetConsoleTextAttribute
3475 check_func_headers windows.h Sleep
3476 check_func_headers windows.h VirtualAlloc
3477
3478 check_header direct.h
3479 check_header dlfcn.h
3480 check_header dxva.h
3481 check_header dxva2api.h
3482 check_header io.h
3483 check_header malloc.h
3484 check_header poll.h
3485 check_header sys/mman.h
3486 check_header sys/param.h
3487 check_header sys/resource.h
3488 check_header sys/select.h
3489 check_header sys/time.h
3490 check_header unistd.h
3491 check_header vdpau/vdpau.h
3492 check_header vdpau/vdpau_x11.h
3493 check_header VideoDecodeAcceleration/VDADecoder.h
3494 check_header windows.h
3495 check_header X11/extensions/XvMClib.h
3496
3497 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3498 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3499
3500 if ! disabled w32threads && ! enabled pthreads; then
3501     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3502 fi
3503
3504 # check for some common methods of building with pthread support
3505 # do this before the optional library checks as some of them require pthreads
3506 if ! disabled pthreads && ! enabled w32threads; then
3507     enable pthreads
3508     if check_func pthread_create; then
3509         :
3510     elif check_func pthread_create -pthread; then
3511         add_cflags -pthread
3512         add_extralibs -pthread
3513     elif check_func pthread_create -pthreads; then
3514         add_cflags -pthreads
3515         add_extralibs -pthreads
3516     elif check_func pthread_create -lpthreadGC2; then
3517         add_extralibs -lpthreadGC2
3518     elif ! check_lib pthread.h pthread_create -lpthread; then
3519         disable pthreads
3520     fi
3521 fi
3522
3523 for thread in $THREADS_LIST; do
3524     if enabled $thread; then
3525         test -n "$thread_type" &&
3526             die "ERROR: Only one thread type must be selected." ||
3527             thread_type="$thread"
3528     fi
3529 done
3530
3531 check_lib math.h sin -lm && LIBM="-lm"
3532 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3533
3534 atan2f_args=2
3535 ldexpf_args=2
3536 powf_args=2
3537
3538 for func in $MATH_FUNCS; do
3539     eval check_mathfunc $func \${${func}_args:-1}
3540 done
3541
3542 # these are off by default, so fail if requested and not available
3543 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3544 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3545 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3546 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3547 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3548 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3549 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3550                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3551                         done || die "ERROR: libgsm not found"; }
3552 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3553 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3554 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3555 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3556 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3557 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3558 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3559 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3560 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3561 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3562 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3563 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3564 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3565 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3566 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3567 enabled libvpx     && {
3568     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3569                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3570     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3571                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3572     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3573     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3574 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3575                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3576                         die "ERROR: libx264 version must be >= 0.118."; }
3577 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3578 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3579 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3580                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3581                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3582                         die "ERROR: openssl not found"; }
3583
3584 if enabled gnutls; then
3585     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3586     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3587 fi
3588
3589 # libdc1394 check
3590 if enabled libdc1394; then
3591     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3592         enable libdc1394_2; } ||
3593     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3594         enable libdc1394_1; } ||
3595     die "ERROR: No version of libdc1394 found "
3596 fi
3597
3598 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3599     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3600     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3601     enable sdl
3602 fi
3603
3604 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3605
3606 check_header linux/fb.h
3607 check_header linux/videodev2.h
3608 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3609
3610 check_header sys/videoio.h
3611
3612 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3613 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3614 # w32api 3.12 had it defined wrong
3615 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3616
3617 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3618 { check_header dev/bktr/ioctl_meteor.h &&
3619   check_header dev/bktr/ioctl_bt848.h; } ||
3620 { check_header machine/ioctl_meteor.h &&
3621   check_header machine/ioctl_bt848.h; } ||
3622 { check_header dev/video/meteor/ioctl_meteor.h &&
3623   check_header dev/video/bktr/ioctl_bt848.h; } ||
3624 check_header dev/ic/bt8xx.h
3625
3626 check_header sndio.h
3627 check_header sys/soundcard.h
3628 check_header soundcard.h
3629
3630 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3631
3632 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3633     check_func jack_port_get_latency_range -ljack
3634
3635 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3636
3637 if enabled libcdio; then
3638     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
3639 fi
3640
3641 enabled x11grab                                           &&
3642 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3643 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3644 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3645
3646 enabled vdpau &&
3647     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3648     disable vdpau
3649
3650 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3651
3652 # add some useful compiler flags if supported
3653 check_cflags -Wdeclaration-after-statement
3654 check_cflags -Wall
3655 check_cflags -Wno-parentheses
3656 check_cflags -Wno-switch
3657 check_cflags -Wno-format-zero-length
3658 check_cflags -Wdisabled-optimization
3659 check_cflags -Wpointer-arith
3660 check_cflags -Wredundant-decls
3661 check_cflags -Wno-pointer-sign
3662 check_cflags -Wcast-qual
3663 check_cflags -Wwrite-strings
3664 check_cflags -Wtype-limits
3665 check_cflags -Wundef
3666 check_cflags -Wmissing-prototypes
3667 check_cflags -Wstrict-prototypes
3668 enabled extra_warnings && check_cflags -Winline
3669
3670 # add some linker flags
3671 check_ldflags -Wl,--warn-common
3672 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3673 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3674
3675 enabled xmm_clobber_test &&
3676     check_ldflags -Wl,--wrap,avcodec_open2              \
3677                   -Wl,--wrap,avcodec_decode_audio4      \
3678                   -Wl,--wrap,avcodec_decode_video2      \
3679                   -Wl,--wrap,avcodec_decode_subtitle2   \
3680                   -Wl,--wrap,avcodec_encode_audio2      \
3681                   -Wl,--wrap,avcodec_encode_video       \
3682                   -Wl,--wrap,avcodec_encode_subtitle    \
3683                   -Wl,--wrap,sws_scale ||
3684     disable xmm_clobber_test
3685
3686 echo "X{};" > $TMPV
3687 if test_ldflags -Wl,--version-script,$TMPV; then
3688     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3689     check_cc <<EOF && enable symver_asm_label
3690 void ff_foo(void) __asm__ ("av_foo@VERSION");
3691 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3692 EOF
3693     check_cc <<EOF && enable symver_gnu_asm
3694 __asm__(".symver ff_foo,av_foo@VERSION");
3695 void ff_foo(void) {}
3696 EOF
3697 fi
3698
3699 if [ -z "$optflags" ]; then
3700     if enabled small; then
3701         optflags=$cflags_size
3702     elif enabled optimizations; then
3703         optflags=$cflags_speed
3704     else
3705         optflags=$cflags_noopt
3706     fi
3707 fi
3708
3709 check_optflags(){
3710     check_cflags "$@"
3711     enabled lto && check_ldflags "$@"
3712 }
3713
3714
3715 if enabled lto; then
3716     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3717     check_cflags  -flto
3718     check_ldflags -flto $cpuflags
3719 fi
3720
3721 check_optflags $optflags
3722 check_optflags -fno-math-errno
3723 check_optflags -fno-signed-zeros
3724
3725 if enabled icc; then
3726     # Just warnings, no remarks
3727     check_cflags -w1
3728     # -wd: Disable following warnings
3729     # 144, 167, 556: -Wno-pointer-sign
3730     # 1292: attribute "foo" ignored
3731     # 1419: external declaration in primary source file
3732     # 10006: ignoring unknown option -fno-signed-zeros
3733     # 10148: ignoring unknown option -Wno-parentheses
3734     # 10156: ignoring option '-W'; no argument required
3735     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3736     # 11030: Warning unknown option --as-needed
3737     # 10156: ignoring option '-export'; no argument required
3738     check_ldflags -wd10156,11030
3739     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3740     enable ebp_available
3741     if enabled x86_32; then
3742         icc_version=$($cc -dumpversion)
3743         test ${icc_version%%.*} -ge 11 &&
3744             check_cflags -falign-stack=maintain-16-byte ||
3745             disable aligned_stack
3746     fi
3747 elif enabled ccc; then
3748     # disable some annoying warnings
3749     add_cflags -msg_disable bitnotint
3750     add_cflags -msg_disable mixfuncvoid
3751     add_cflags -msg_disable nonstandcast
3752     add_cflags -msg_disable unsupieee
3753 elif enabled gcc; then
3754     check_optflags -fno-tree-vectorize
3755     check_cflags -Werror=implicit-function-declaration
3756     check_cflags -Werror=missing-prototypes
3757     check_cflags -Werror=return-type
3758     check_cflags -Werror=declaration-after-statement
3759     check_cflags -Werror=vla
3760 elif enabled llvm_gcc; then
3761     check_cflags -mllvm -stack-alignment=16
3762 elif enabled clang; then
3763     check_cflags -mllvm -stack-alignment=16
3764     check_cflags -Qunused-arguments
3765     check_cflags -Werror=implicit-function-declaration
3766     check_cflags -Werror=missing-prototypes
3767     check_cflags -Werror=return-type
3768 elif enabled armcc; then
3769     # 2523: use of inline assembler is deprecated
3770     add_cflags -W${armcc_opt},--diag_suppress=2523
3771     add_cflags -W${armcc_opt},--diag_suppress=1207
3772     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3773     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3774     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3775     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3776 elif enabled tms470; then
3777     add_cflags -pds=824 -pds=837
3778 elif enabled pathscale; then
3779     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3780 elif enabled msvc; then
3781     enabled x86_32 && disable aligned_stack
3782 fi
3783
3784 case $target_os in
3785     osf1)
3786         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3787     ;;
3788     plan9)
3789         add_cppflags -Dmain=plan9_main
3790     ;;
3791 esac
3792
3793 enabled_any $THREADS_LIST      && enable threads
3794
3795 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3796
3797 check_deps $CONFIG_LIST       \
3798            $CONFIG_EXTRA      \
3799            $HAVE_LIST         \
3800            $ALL_COMPONENTS    \
3801
3802 ! enabled_any memalign posix_memalign aligned_malloc &&
3803     enabled_any $need_memalign && enable memalign_hack
3804
3805 echo "install prefix            $prefix"
3806 echo "source path               $source_path"
3807 echo "C compiler                $cc"
3808 echo "ARCH                      $arch ($cpu)"
3809 if test "$build_suffix" != ""; then
3810     echo "build suffix              $build_suffix"
3811 fi
3812 if test "$extra_version" != ""; then
3813     echo "version string suffix     $extra_version"
3814 fi
3815 echo "big-endian                ${bigendian-no}"
3816 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3817 if enabled x86; then
3818     echo "${yasmexe}                      ${yasm-no}"
3819     echo "MMX enabled               ${mmx-no}"
3820     echo "MMXEXT enabled            ${mmxext-no}"
3821     echo "3DNow! enabled            ${amd3dnow-no}"
3822     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3823     echo "SSE enabled               ${sse-no}"
3824     echo "SSSE3 enabled             ${ssse3-no}"
3825     echo "AVX enabled               ${avx-no}"
3826     echo "FMA4 enabled              ${fma4-no}"
3827     echo "CMOV enabled              ${cmov-no}"
3828     echo "CMOV is fast              ${fast_cmov-no}"
3829     echo "EBX available             ${ebx_available-no}"
3830     echo "EBP available             ${ebp_available-no}"
3831 fi
3832 if enabled arm; then
3833     echo "ARMv5TE enabled           ${armv5te-no}"
3834     echo "ARMv6 enabled             ${armv6-no}"
3835     echo "ARMv6T2 enabled           ${armv6t2-no}"
3836     echo "VFP enabled               ${vfp-no}"
3837     echo "NEON enabled              ${neon-no}"
3838 fi
3839 if enabled ppc; then
3840     echo "AltiVec enabled           ${altivec-no}"
3841     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3842     echo "dcbzl available           ${dcbzl-no}"
3843 fi
3844 if enabled sparc; then
3845     echo "VIS enabled               ${vis-no}"
3846 fi
3847 echo "debug symbols             ${debug-no}"
3848 echo "optimize for size         ${small-no}"
3849 echo "optimizations             ${optimizations-no}"
3850 echo "static                    ${static-no}"
3851 echo "shared                    ${shared-no}"
3852 echo "new filter support        ${avfilter-no}"
3853 echo "network support           ${network-no}"
3854 echo "threading support         ${thread_type-no}"
3855 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3856 echo "SDL support               ${sdl-no}"
3857 test -n "$random_seed" &&
3858     echo "random seed               ${random_seed}"
3859 echo
3860
3861 echo "External libraries:"
3862 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3863 echo
3864
3865 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3866     echo "Enabled ${type}s:"
3867     eval list=\$$(toupper $type)_LIST
3868     print_enabled '_*' $list | print_3_columns
3869     echo
3870 done
3871
3872 license="LGPL version 2.1 or later"
3873 if enabled nonfree; then
3874     license="nonfree and unredistributable"
3875 elif enabled gplv3; then
3876     license="GPL version 3 or later"
3877 elif enabled lgplv3; then
3878     license="LGPL version 3 or later"
3879 elif enabled gpl; then
3880     license="GPL version 2 or later"
3881 fi
3882
3883 echo "License: $license"
3884
3885 echo "Creating config.mak and config.h..."
3886
3887 test -e Makefile || $ln_s "$source_path/Makefile" .
3888
3889 config_files="$TMPH config.mak"
3890
3891 cat > config.mak <<EOF
3892 # Automatically generated by configure - do not modify!
3893 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3894 prefix=$prefix
3895 LIBDIR=\$(DESTDIR)$libdir
3896 SHLIBDIR=\$(DESTDIR)$shlibdir
3897 INCDIR=\$(DESTDIR)$incdir
3898 BINDIR=\$(DESTDIR)$bindir
3899 DATADIR=\$(DESTDIR)$datadir
3900 MANDIR=\$(DESTDIR)$mandir
3901 SRC_PATH=$source_path
3902 CC_IDENT=$cc_ident
3903 ARCH=$arch
3904 CC=$cc
3905 AS=$as
3906 LD=$ld
3907 DEPCC=$dep_cc
3908 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3909 DEPAS=$as
3910 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3911 YASM=$yasmexe
3912 DEPYASM=$yasmexe
3913 AR=$ar
3914 ARFLAGS=$arflags
3915 AR_O=$ar_o
3916 RANLIB=$ranlib
3917 LN_S=$ln_s
3918 CPPFLAGS=$CPPFLAGS
3919 CFLAGS=$CFLAGS
3920 ASFLAGS=$ASFLAGS
3921 AS_C=$AS_C
3922 AS_O=$AS_O
3923 CC_C=$CC_C
3924 CC_E=$CC_E
3925 CC_O=$CC_O
3926 LD_O=$LD_O
3927 LD_LIB=$LD_LIB
3928 LD_PATH=$LD_PATH
3929 DLLTOOL=$dlltool
3930 LDFLAGS=$LDFLAGS
3931 LDFLAGS-avserver=$AVSERVERLDFLAGS
3932 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3933 YASMFLAGS=$YASMFLAGS
3934 BUILDSUF=$build_suffix
3935 FULLNAME=$FULLNAME
3936 LIBPREF=$LIBPREF
3937 LIBSUF=$LIBSUF
3938 LIBNAME=$LIBNAME
3939 SLIBPREF=$SLIBPREF
3940 SLIBSUF=$SLIBSUF
3941 EXESUF=$EXESUF
3942 EXTRA_VERSION=$extra_version
3943 CCDEP=$CCDEP
3944 CCDEP_FLAGS=$CCDEP_FLAGS
3945 ASDEP=$ASDEP
3946 ASDEP_FLAGS=$ASDEP_FLAGS
3947 CC_DEPFLAGS=$CC_DEPFLAGS
3948 AS_DEPFLAGS=$AS_DEPFLAGS
3949 HOSTCC=$host_cc
3950 HOSTLD=$host_ld
3951 HOSTCFLAGS=$host_cflags
3952 HOSTCPPFLAGS=$host_cppflags
3953 HOSTEXESUF=$HOSTEXESUF
3954 HOSTLDFLAGS=$host_ldflags
3955 HOSTLIBS=$host_libs
3956 DEPHOSTCC=$host_cc
3957 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
3958 HOSTCCDEP=$HOSTCCDEP
3959 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
3960 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
3961 HOSTCC_C=$HOSTCC_C
3962 HOSTCC_O=$HOSTCC_O
3963 HOSTLD_O=$HOSTLD_O
3964 TARGET_EXEC=$target_exec
3965 TARGET_PATH=$target_path
3966 LIBS-avplay=$sdl_libs
3967 CFLAGS-avplay=$sdl_cflags
3968 ZLIB=$($ldflags_filter -lz)
3969 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3970 EXTRALIBS=$extralibs
3971 COMPAT_OBJS=$compat_objs
3972 EXEOBJS=$exeobjs
3973 INSTALL=install
3974 LIBTARGET=${LIBTARGET}
3975 SLIBNAME=${SLIBNAME}
3976 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3977 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3978 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3979 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3980 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3981 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3982 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3983 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3984 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
3985 EOF
3986
3987 get_version(){
3988     lcname=lib${1}
3989     name=$(toupper $lcname)
3990     file=$source_path/$lcname/version.h
3991     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
3992     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3993     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3994     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3995     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
3996 }
3997
3998 map 'get_version $v' $LIBRARY_LIST
3999
4000 cat > $TMPH <<EOF
4001 /* Automatically generated by configure - do not modify! */
4002 #ifndef LIBAV_CONFIG_H
4003 #define LIBAV_CONFIG_H
4004 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4005 #define LIBAV_LICENSE "$(c_escape $license)"
4006 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4007 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4008 #define restrict $_restrict
4009 #define EXTERN_PREFIX "${extern_prefix}"
4010 #define EXTERN_ASM ${extern_prefix}
4011 #define SLIBSUF "$SLIBSUF"
4012 EOF
4013
4014 test -n "$malloc_prefix" &&
4015     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4016
4017 if enabled yasm; then
4018     append config_files $TMPASM
4019     printf '' >$TMPASM
4020 fi
4021
4022 print_config ARCH_   "$config_files" $ARCH_LIST
4023 print_config HAVE_   "$config_files" $HAVE_LIST
4024 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4025                                      $CONFIG_EXTRA      \
4026                                      $ALL_COMPONENTS    \
4027
4028 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4029
4030 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4031 cp_if_changed $TMPH config.h
4032 touch .config
4033
4034 enabled yasm && cp_if_changed $TMPASM config.asm
4035
4036 cat > $TMPH <<EOF
4037 /* Generated by ffconf */
4038 #ifndef AVUTIL_AVCONFIG_H
4039 #define AVUTIL_AVCONFIG_H
4040 EOF
4041
4042 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4043
4044 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4045
4046 cp_if_changed $TMPH libavutil/avconfig.h
4047
4048 test -n "$WARNINGS" && printf "\n$WARNINGS"
4049
4050 # build pkg-config files
4051
4052 pkgconfig_generate(){
4053     name=$1
4054     shortname=${name#lib}${build_suffix}
4055     comment=$2
4056     version=$3
4057     libs=$4
4058     requires=$5
4059     enabled ${name#lib} || return 0
4060     mkdir -p $name
4061     cat <<EOF > $name/$name.pc
4062 prefix=$prefix
4063 exec_prefix=\${prefix}
4064 libdir=$libdir
4065 includedir=$incdir
4066
4067 Name: $name
4068 Description: $comment
4069 Version: $version
4070 Requires: $(enabled shared || echo $requires)
4071 Requires.private: $(enabled shared && echo $requires)
4072 Conflicts:
4073 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4074 Libs.private: $(enabled shared && echo $libs)
4075 Cflags: -I\${includedir}
4076 EOF
4077     cat <<EOF > $name/$name-uninstalled.pc
4078 prefix=
4079 exec_prefix=
4080 libdir=\${pcfiledir}
4081 includedir=${source_path}
4082
4083 Name: $name
4084 Description: $comment
4085 Version: $version
4086 Requires: $requires
4087 Conflicts:
4088 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4089 Cflags: -I\${includedir}
4090 EOF
4091 }
4092
4093 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4094 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4095 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4096 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4097 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4098 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4099 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"