configure: Use a different variable name in push/popvar
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --libdir=DIR             install libs in DIR [PREFIX/lib]
85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
86   --incdir=DIR             install includes in DIR [PREFIX/include]
87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
88
89 Licensing options:
90   --enable-gpl             allow use of GPL code, the resulting libs
91                            and binaries will be under GPL [no]
92   --enable-version3        upgrade (L)GPL to version 3 [no]
93   --enable-nonfree         allow use of nonfree code, the resulting libs
94                            and binaries will be unredistributable [no]
95
96 Configuration options:
97   --disable-static         do not build static libraries [no]
98   --enable-shared          build shared libraries [no]
99   --enable-small           optimize for size instead of speed
100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
101   --enable-gray            enable full grayscale support (slower color)
102   --disable-swscale-alpha  disable alpha channel support in swscale
103   --disable-all            disable building components, libraries and programs
104
105 Program options:
106   --disable-programs       do not build command line programs
107   --disable-avconv         disable avconv build
108   --disable-avplay         disable avplay build
109   --disable-avprobe        disable avprobe build
110   --disable-avserver       disable avserver build
111
112 Component options:
113   --disable-doc            do not build documentation
114   --disable-avdevice       disable libavdevice build
115   --disable-avcodec        disable libavcodec build
116   --disable-avformat       disable libavformat build
117   --disable-avutil         disable libavutil build
118   --disable-swscale        disable libswscale build
119   --disable-avfilter       disable video filter support [no]
120   --disable-avresample     disable libavresample build [no]
121   --disable-pthreads       disable pthreads [auto]
122   --disable-w32threads     disable Win32 threads [auto]
123   --disable-network        disable network support [no]
124   --disable-dct            disable DCT code
125   --disable-error-resilience disable error resilience code
126   --disable-lsp            disable LSP code
127   --disable-lzo            disable LZO decoder code
128   --disable-mdct           disable MDCT code
129   --disable-rdft           disable RDFT code
130   --disable-fft            disable FFT code
131
132 Hardware accelerators:
133   --enable-dxva2           enable DXVA2 code
134   --enable-vaapi           enable VAAPI code
135   --enable-vda             enable VDA code
136   --enable-vdpau           enable VDPAU code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176   --enable-avisynth        enable reading of AVISynth script files [no]
177   --enable-bzlib           enable bzlib [autodetect]
178   --enable-frei0r          enable frei0r video filtering
179   --enable-gnutls          enable gnutls [no]
180   --enable-libcdio         enable audio CD grabbing with libcdio
181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
182                            and libraw1394 [no]
183   --enable-libfaac         enable AAC encoding via libfaac [no]
184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
185   --enable-libfreetype     enable libfreetype [no]
186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
191   --enable-libopencv       enable video filtering via libopencv [no]
192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
193   --enable-libopus         enable Opus decoding via libopus [no]
194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
198   --enable-libtheora       enable Theora encoding via libtheora [no]
199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
203   --enable-libx264         enable H.264 encoding via x264 [no]
204   --enable-libxavs         enable AVS encoding via xavs [no]
205   --enable-libxvid         enable Xvid encoding via xvidcore,
206                            native MPEG-4/Xvid encoder exists [no]
207   --enable-openssl         enable openssl [no]
208   --enable-x11grab         enable X11 grabbing [no]
209   --enable-zlib            enable zlib [autodetect]
210
211 Advanced options (experts only):
212   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
213   --enable-cross-compile   assume a cross-compiler is used
214   --sysroot=PATH           root of cross-build tree
215   --sysinclude=PATH        location of cross-build system headers
216   --target-os=OS           compiler targets OS [$target_os]
217   --target-exec=CMD        command to run executables on target
218   --target-path=DIR        path to view of build directory on target
219   --toolchain=NAME         set tool defaults according to NAME
220   --nm=NM                  use nm tool
221   --ar=AR                  use archive tool AR [$ar_default]
222   --as=AS                  use assembler AS [$as_default]
223   --cc=CC                  use C compiler CC [$cc_default]
224   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
225   --ld=LD                  use linker LD
226   --host-cc=HOSTCC         use host C compiler HOSTCC
227   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
228   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
229   --host-ld=HOSTLD         use host linker HOSTLD
230   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
231   --host-libs=HLIBS        use libs HLIBS when linking for host
232   --host-os=OS             compiler host OS [$target_os]
233   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
234   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
235   --extra-libs=ELIBS       add ELIBS [$ELIBS]
236   --extra-version=STRING   version string suffix []
237   --optflags=OPTFLAGS      override optimization-related compiler flags
238   --build-suffix=SUFFIX    library name suffix []
239   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
240   --arch=ARCH              select architecture [$arch]
241   --cpu=CPU                select the minimum required CPU (affects
242                            instruction selection, may crash on older CPUs)
243   --enable-pic             build position-independent code
244   --enable-sram            allow use of on-chip SRAM
245   --enable-thumb           compile for Thumb instruction set
246   --disable-symver         disable symbol versioning
247   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
248   --disable-safe-bitstream-reader
249                            disable buffer boundary checking in bitreaders
250                            (faster, but may crash)
251   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
252   --enable-lto             use link-time optimization
253
254 Optimization options (experts only):
255   --disable-asm            disable all assembler optimizations
256   --disable-altivec        disable AltiVec optimizations
257   --disable-amd3dnow       disable 3DNow! optimizations
258   --disable-amd3dnowext    disable 3DNow! extended optimizations
259   --disable-mmx            disable MMX optimizations
260   --disable-mmxext         disable MMXEXT optimizations
261   --disable-sse            disable SSE optimizations
262   --disable-sse2           disable SSE2 optimizations
263   --disable-sse3           disable SSE3 optimizations
264   --disable-ssse3          disable SSSE3 optimizations
265   --disable-sse4           disable SSE4 optimizations
266   --disable-sse42          disable SSE4.2 optimizations
267   --disable-avx            disable AVX optimizations
268   --disable-fma4           disable FMA4 optimizations
269   --disable-armv5te        disable armv5te optimizations
270   --disable-armv6          disable armv6 optimizations
271   --disable-armv6t2        disable armv6t2 optimizations
272   --disable-vfp            disable VFP optimizations
273   --disable-neon           disable NEON optimizations
274   --disable-vis            disable VIS optimizations
275   --disable-inline-asm     disable use of inline assembler
276   --disable-yasm           disable use of yasm assembler
277
278 Developer options (useful when working on Libav itself):
279   --disable-debug          disable debugging symbols
280   --enable-debug=LEVEL     set the debug level [$debuglevel]
281   --disable-optimizations  disable compiler optimizations
282   --enable-extra-warnings  enable more compiler warnings
283   --samples=PATH           location of test samples for FATE, if not set use
284                            \$LIBAV_SAMPLES at make invocation time.
285   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
286                            should be used only for debugging purposes)
287   --enable-random          randomly enable/disable components
288   --disable-random
289   --enable-random=LIST     randomly enable/disable specific components or
290   --disable-random=LIST    component groups. LIST is a comma-separated list
291                            of NAME[:PROB] entries where NAME is a component
292                            (group) and PROB the probability associated with
293                            NAME (default 0.5).
294   --random-seed=VALUE      seed value for --enable/disable-random
295
296 NOTE: Object files are built at the place where configure is launched.
297 EOF
298   exit 0
299 }
300
301 quotes='""'
302
303 log(){
304     echo "$@" >> $logfile
305 }
306
307 log_file(){
308     log BEGIN $1
309     pr -n -t $1 >> $logfile
310     log END $1
311 }
312
313 echolog(){
314     log "$@"
315     echo "$@"
316 }
317
318 warn(){
319     log "WARNING: $*"
320     WARNINGS="${WARNINGS}WARNING: $*\n"
321 }
322
323 die(){
324     echolog "$@"
325     cat <<EOF
326
327 If you think configure made a mistake, make sure you are using the latest
328 version from Git.  If the latest version fails, report the problem to the
329 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
330 EOF
331     if disabled logging; then
332         cat <<EOF
333 Rerun configure with logging enabled (do not use --disable-logging), and
334 include the log this produces with your report.
335 EOF
336     else
337         cat <<EOF
338 Include the log file "$logfile" produced by configure as this will help
339 solving the problem.
340 EOF
341     fi
342     exit 1
343 }
344
345 # Avoid locale weirdness, besides we really just want to translate ASCII.
346 toupper(){
347     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
348 }
349
350 tolower(){
351     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
352 }
353
354 c_escape(){
355     echo "$*" | sed 's/["\\]/\\\0/g'
356 }
357
358 sh_quote(){
359     v=$(echo "$1" | sed "s/'/'\\\\''/g")
360     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
361     echo "$v"
362 }
363
364 cleanws(){
365     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
366 }
367
368 filter(){
369     pat=$1
370     shift
371     for v; do
372         eval "case $v in $pat) echo $v ;; esac"
373     done
374 }
375
376 filter_out(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) ;; *) echo $v ;; esac"
381     done
382 }
383
384 map(){
385     m=$1
386     shift
387     for v; do eval $m; done
388 }
389
390 add_suffix(){
391     suffix=$1
392     shift
393     for v; do echo ${v}${suffix}; done
394 }
395
396 set_all(){
397     value=$1
398     shift
399     for var in $*; do
400         eval $var=$value
401     done
402 }
403
404 set_weak(){
405     value=$1
406     shift
407     for var; do
408         eval : \${$var:=$value}
409     done
410 }
411
412 sanitize_var_name(){
413     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
414 }
415
416 set_safe(){
417     var=$1
418     shift
419     eval $(sanitize_var_name "$var")='$*'
420 }
421
422 get_safe(){
423     eval echo \$$(sanitize_var_name "$1")
424 }
425
426 pushvar(){
427     for pvar in $*; do
428         eval level=\${${pvar}_level:=0}
429         eval ${pvar}_${level}="\$$pvar"
430         eval ${pvar}_level=$(($level+1))
431     done
432 }
433
434 popvar(){
435     for pvar in $*; do
436         eval level=\${${pvar}_level:-0}
437         test $level = 0 && continue
438         eval level=$(($level-1))
439         eval $pvar="\${${pvar}_${level}}"
440         eval ${pvar}_level=$level
441         eval unset ${pvar}_${level}
442     done
443 }
444
445 enable(){
446     set_all yes $*
447 }
448
449 disable(){
450     set_all no $*
451 }
452
453 enable_weak(){
454     set_weak yes $*
455 }
456
457 disable_weak(){
458     set_weak no $*
459 }
460
461 enable_safe(){
462     for var; do
463         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
464     done
465 }
466
467 disable_safe(){
468     for var; do
469         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
470     done
471 }
472
473 do_enable_deep(){
474     for var; do
475         enabled $var && continue
476         eval sel="\$${var}_select"
477         eval sgs="\$${var}_suggest"
478         pushvar var sgs
479         enable_deep $sel
480         popvar sgs
481         enable_deep_weak $sgs
482         popvar var
483     done
484 }
485
486 enable_deep(){
487     do_enable_deep $*
488     enable $*
489 }
490
491 enable_deep_weak(){
492     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 ATOMICS_LIST='
1126     atomics_gcc
1127     atomics_suncc
1128     atomics_win32
1129 '
1130
1131 ARCH_LIST='
1132     aarch64
1133     alpha
1134     arm
1135     avr32
1136     avr32_ap
1137     avr32_uc
1138     bfin
1139     ia64
1140     m68k
1141     mips
1142     mips64
1143     parisc
1144     ppc
1145     ppc64
1146     s390
1147     sh4
1148     sparc
1149     sparc64
1150     tilegx
1151     tilepro
1152     tomi
1153     x86
1154     x86_32
1155     x86_64
1156 '
1157
1158 ARCH_EXT_LIST_ARM='
1159     armv5te
1160     armv6
1161     armv6t2
1162     neon
1163     vfp
1164     vfpv3
1165 '
1166
1167 ARCH_EXT_LIST_X86='
1168     amd3dnow
1169     amd3dnowext
1170     avx
1171     fma4
1172     mmx
1173     mmxext
1174     sse
1175     sse2
1176     sse3
1177     sse4
1178     sse42
1179     ssse3
1180 '
1181
1182 ARCH_EXT_LIST="
1183     $ARCH_EXT_LIST_ARM
1184     $ARCH_EXT_LIST_X86
1185     altivec
1186     ppc4xx
1187     vis
1188 "
1189
1190 HAVE_LIST_CMDLINE='
1191     inline_asm
1192     symver
1193     yasm
1194 '
1195
1196 HAVE_LIST_PUB='
1197     bigendian
1198     fast_unaligned
1199 '
1200
1201 MATH_FUNCS="
1202     atanf
1203     atan2f
1204     cbrtf
1205     cosf
1206     exp2
1207     exp2f
1208     expf
1209     isinf
1210     isnan
1211     ldexpf
1212     llrint
1213     llrintf
1214     log2
1215     log2f
1216     log10f
1217     lrint
1218     lrintf
1219     powf
1220     rint
1221     round
1222     roundf
1223     sinf
1224     trunc
1225     truncf
1226 "
1227
1228 HAVE_LIST="
1229     $ARCH_EXT_LIST
1230     $(add_suffix _external $ARCH_EXT_LIST)
1231     $(add_suffix _inline   $ARCH_EXT_LIST)
1232     $HAVE_LIST_CMDLINE
1233     $HAVE_LIST_PUB
1234     $THREADS_LIST
1235     $ATOMICS_LIST
1236     $MATH_FUNCS
1237     aligned_malloc
1238     aligned_stack
1239     alsa_asoundlib_h
1240     altivec_h
1241     arpa_inet_h
1242     asm_mod_q
1243     asm_mod_y
1244     atomic_cas_ptr
1245     atomics_native
1246     attribute_may_alias
1247     attribute_packed
1248     cdio_paranoia_h
1249     cdio_paranoia_paranoia_h
1250     closesocket
1251     cmov
1252     CommandLineToArgvW
1253     cpunop
1254     CryptGenRandom
1255     dcbzl
1256     dev_bktr_ioctl_bt848_h
1257     dev_bktr_ioctl_meteor_h
1258     dev_ic_bt8xx_h
1259     dev_video_bktr_ioctl_bt848_h
1260     dev_video_meteor_ioctl_meteor_h
1261     direct_h
1262     dlfcn_h
1263     dlopen
1264     dos_paths
1265     dxva_h
1266     ebp_available
1267     ebx_available
1268     fast_64bit
1269     fast_clz
1270     fast_cmov
1271     fcntl
1272     fork
1273     getaddrinfo
1274     gethrtime
1275     getopt
1276     GetProcessAffinityMask
1277     GetProcessMemoryInfo
1278     GetProcessTimes
1279     GetSystemTimeAsFileTime
1280     getrusage
1281     getservbyport
1282     gettimeofday
1283     gnu_as
1284     gsm_h
1285     ibm_asm
1286     inet_aton
1287     io_h
1288     isatty
1289     jack_port_get_latency_range
1290     ldbrx
1291     libdc1394_1
1292     libdc1394_2
1293     local_aligned_16
1294     local_aligned_8
1295     localtime_r
1296     loongson
1297     machine_ioctl_bt848_h
1298     machine_ioctl_meteor_h
1299     machine_rw_barrier
1300     malloc_h
1301     MapViewOfFile
1302     memalign
1303     MemoryBarrier
1304     mkstemp
1305     mm_empty
1306     mmap
1307     mprotect
1308     msvcrt
1309     nanosleep
1310     poll_h
1311     posix_memalign
1312     rdtsc
1313     sched_getaffinity
1314     sdl
1315     SetConsoleTextAttribute
1316     setmode
1317     setrlimit
1318     Sleep
1319     sndio_h
1320     socklen_t
1321     soundcard_h
1322     strerror_r
1323     strptime
1324     strtok_r
1325     struct_addrinfo
1326     struct_group_source_req
1327     struct_ip_mreq_source
1328     struct_ipv6_mreq
1329     struct_pollfd
1330     struct_rusage_ru_maxrss
1331     struct_sockaddr_in6
1332     struct_sockaddr_sa_len
1333     struct_sockaddr_storage
1334     struct_v4l2_frmivalenum_discrete
1335     symver_asm_label
1336     symver_gnu_asm
1337     sync_val_compare_and_swap
1338     sysconf
1339     sysctl
1340     sys_mman_h
1341     sys_param_h
1342     sys_resource_h
1343     sys_select_h
1344     sys_soundcard_h
1345     sys_time_h
1346     sys_videoio_h
1347     threads
1348     unistd_h
1349     usleep
1350     vfp_args
1351     VirtualAlloc
1352     windows_h
1353     winsock2_h
1354     xform_asm
1355     xmm_clobbers
1356 "
1357
1358 # options emitted with CONFIG_ prefix but not available on the command line
1359 CONFIG_EXTRA="
1360     aandcttables
1361     ac3dsp
1362     audio_frame_queue
1363     dsputil
1364     gcrypt
1365     golomb
1366     gplv3
1367     h264chroma
1368     h264dsp
1369     h264pred
1370     h264qpel
1371     hpeldsp
1372     huffman
1373     lgplv3
1374     lpc
1375     mpegaudio
1376     mpegaudiodsp
1377     mpegvideo
1378     mpegvideoenc
1379     nettle
1380     rangecoder
1381     rtpdec
1382     rtpenc_chain
1383     sinewin
1384     videodsp
1385     vp3dsp
1386 "
1387
1388 CMDLINE_SELECT="
1389     $ARCH_EXT_LIST
1390     $CONFIG_LIST
1391     $HAVE_LIST_CMDLINE
1392     $THREADS_LIST
1393     asm
1394     cross_compile
1395     debug
1396     extra_warnings
1397     logging
1398     lto
1399     optimizations
1400 "
1401
1402 PATHS_LIST='
1403     bindir
1404     datadir
1405     incdir
1406     libdir
1407     mandir
1408     prefix
1409     shlibdir
1410 '
1411
1412 CMDLINE_SET="
1413     $PATHS_LIST
1414     ar
1415     arch
1416     as
1417     build_suffix
1418     cc
1419     cpu
1420     cross_prefix
1421     dep_cc
1422     extra_version
1423     host_cc
1424     host_cflags
1425     host_ld
1426     host_ldflags
1427     host_libs
1428     host_os
1429     ld
1430     logfile
1431     malloc_prefix
1432     nm
1433     optflags
1434     pkg_config
1435     random_seed
1436     samples
1437     sysinclude
1438     sysroot
1439     target_exec
1440     target_os
1441     target_path
1442     toolchain
1443 "
1444
1445 CMDLINE_APPEND="
1446     extra_cflags
1447     host_cppflags
1448 "
1449
1450 # code dependency declarations
1451
1452 # architecture extensions
1453
1454 armv5te_deps="arm"
1455 armv6_deps="arm"
1456 armv6t2_deps="arm"
1457 neon_deps="arm"
1458 vfp_deps="arm"
1459 vfpv3_deps="vfp"
1460
1461 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1462
1463 altivec_deps="ppc"
1464 ppc4xx_deps="ppc"
1465
1466 vis_deps="sparc"
1467
1468 x86_64_suggest="cmov fast_cmov"
1469
1470 amd3dnow_deps="mmx"
1471 amd3dnowext_deps="amd3dnow"
1472 mmx_deps="x86"
1473 mmxext_deps="mmx"
1474 sse_deps="mmxext"
1475 sse2_deps="sse"
1476 sse3_deps="sse2"
1477 ssse3_deps="sse3"
1478 sse4_deps="ssse3"
1479 sse42_deps="sse4"
1480 avx_deps="sse42"
1481 fma4_deps="avx"
1482
1483 mmx_external_deps="yasm"
1484 mmx_inline_deps="inline_asm"
1485 mmx_suggest="mmx_external mmx_inline"
1486
1487 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1488     eval dep=\$${ext}_deps
1489     eval ${ext}_external_deps='"${dep}_external"'
1490     eval ${ext}_inline_deps='"${dep}_inline"'
1491     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1492 done
1493
1494 aligned_stack_if_any="ppc x86"
1495 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1496 fast_clz_if_any="alpha avr32 mips ppc x86"
1497 fast_unaligned_if_any="ppc x86"
1498
1499 inline_asm_deps="!tms470"
1500 need_memalign="altivec neon sse"
1501
1502 symver_if_any="symver_asm_label symver_gnu_asm"
1503
1504 log2_deps="!msvcrt"
1505
1506 # subsystems
1507 dct_select="rdft"
1508 error_resilience_select="dsputil"
1509 lpc_select="dsputil"
1510 mdct_select="fft"
1511 rdft_select="fft"
1512 mpegaudio_select="mpegaudiodsp"
1513 mpegaudiodsp_select="dct"
1514 mpegvideo_select="dsputil hpeldsp videodsp"
1515 mpegvideoenc_select="mpegvideo"
1516
1517 # decoders / encoders
1518 aac_decoder_select="mdct sinewin"
1519 aac_encoder_select="audio_frame_queue mdct sinewin"
1520 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1521 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1522 ac3_encoder_select="mdct ac3dsp dsputil"
1523 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1524 alac_encoder_select="lpc"
1525 als_decoder_select="dsputil"
1526 amrnb_decoder_select="lsp"
1527 amrwb_decoder_select="lsp"
1528 amv_decoder_select="dsputil hpeldsp"
1529 ape_decoder_select="dsputil"
1530 asv1_decoder_select="dsputil"
1531 asv1_encoder_select="dsputil"
1532 asv2_decoder_select="dsputil"
1533 asv2_encoder_select="dsputil"
1534 atrac1_decoder_select="mdct sinewin"
1535 atrac3_decoder_select="mdct"
1536 bink_decoder_select="dsputil hpeldsp"
1537 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1538 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1539 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1540 cllc_decoder_select="dsputil"
1541 comfortnoise_encoder_select="lpc"
1542 cook_decoder_select="dsputil mdct sinewin"
1543 cscd_decoder_select="lzo"
1544 cscd_decoder_suggest="zlib"
1545 dca_decoder_select="mdct"
1546 dnxhd_decoder_select="dsputil"
1547 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1548 dvvideo_decoder_select="dsputil"
1549 dvvideo_encoder_select="dsputil"
1550 dxa_decoder_select="zlib"
1551 eac3_decoder_select="ac3_decoder"
1552 eac3_encoder_select="ac3_encoder"
1553 eamad_decoder_select="aandcttables dsputil mpegvideo"
1554 eatgq_decoder_select="aandcttables dsputil"
1555 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1556 ffv1_decoder_select="dsputil golomb rangecoder"
1557 ffv1_encoder_select="dsputil rangecoder"
1558 ffvhuff_decoder_select="dsputil"
1559 ffvhuff_encoder_select="dsputil huffman"
1560 flac_decoder_select="golomb"
1561 flac_encoder_select="dsputil golomb lpc"
1562 flashsv_decoder_select="zlib"
1563 flashsv_encoder_select="zlib"
1564 flashsv2_decoder_select="zlib"
1565 flv_decoder_select="h263_decoder"
1566 flv_encoder_select="h263_encoder"
1567 fourxm_decoder_select="dsputil"
1568 fraps_decoder_select="dsputil huffman"
1569 h261_decoder_select="error_resilience mpegvideo"
1570 h261_encoder_select="aandcttables mpegvideoenc"
1571 h263_decoder_select="error_resilience h263_parser mpegvideo"
1572 h263_encoder_select="aandcttables mpegvideoenc"
1573 h263i_decoder_select="h263_decoder"
1574 h263p_encoder_select="h263_encoder"
1575 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1576 h264_decoder_suggest="error_resilience"
1577 huffyuv_decoder_select="dsputil"
1578 huffyuv_encoder_select="dsputil huffman"
1579 iac_decoder_select="dsputil fft mdct sinewin"
1580 imc_decoder_select="dsputil fft mdct sinewin"
1581 indeo3_decoder_select="hpeldsp"
1582 interplay_video_decoder_select="hpeldsp"
1583 jpegls_decoder_select="dsputil golomb hpeldsp"
1584 jpegls_encoder_select="golomb"
1585 jv_decoder_select="dsputil"
1586 lagarith_decoder_select="dsputil"
1587 ljpeg_encoder_select="aandcttables mpegvideoenc"
1588 loco_decoder_select="golomb"
1589 mdec_decoder_select="dsputil error_resilience mpegvideo"
1590 mimic_decoder_select="dsputil hpeldsp"
1591 mjpeg_decoder_select="dsputil hpeldsp"
1592 mjpegb_decoder_select="dsputil hpeldsp"
1593 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1594 mlp_decoder_select="dsputil mlp_parser"
1595 motionpixels_decoder_select="dsputil"
1596 mp1_decoder_select="mpegaudio"
1597 mp1float_decoder_select="mpegaudio"
1598 mp2_decoder_select="mpegaudio"
1599 mp2float_decoder_select="mpegaudio"
1600 mp3_decoder_select="mpegaudio"
1601 mp3adu_decoder_select="mpegaudio"
1602 mp3adufloat_decoder_select="mpegaudio"
1603 mp3float_decoder_select="mpegaudio"
1604 mp3on4_decoder_select="mpegaudio"
1605 mp3on4float_decoder_select="mpegaudio"
1606 mpc7_decoder_select="dsputil mpegaudiodsp"
1607 mpc8_decoder_select="dsputil mpegaudiodsp"
1608 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1609 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1610 mpeg1video_decoder_select="error_resilience mpegvideo"
1611 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1612 mpeg2video_decoder_select="error_resilience mpegvideo"
1613 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1614 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1615 mpeg4_encoder_select="h263_encoder"
1616 msmpeg4v1_decoder_select="h263_decoder"
1617 msmpeg4v2_decoder_select="h263_decoder"
1618 msmpeg4v2_encoder_select="h263_encoder"
1619 msmpeg4v3_decoder_select="h263_decoder"
1620 msmpeg4v3_encoder_select="h263_encoder"
1621 mss2_decoder_select="error_resilience vc1_decoder"
1622 mxpeg_decoder_select="dsputil hpeldsp"
1623 nellymoser_decoder_select="mdct sinewin"
1624 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1625 nuv_decoder_select="dsputil lzo"
1626 png_decoder_select="dsputil zlib"
1627 png_encoder_select="dsputil zlib"
1628 prores_decoder_select="dsputil"
1629 prores_encoder_select="dsputil"
1630 qcelp_decoder_select="lsp"
1631 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1632 ra_144_encoder_select="audio_frame_queue lpc"
1633 ralf_decoder_select="golomb"
1634 rv10_decoder_select="error_resilience h263_decoder"
1635 rv10_encoder_select="h263_encoder"
1636 rv20_decoder_select="error_resilience h263_decoder"
1637 rv20_encoder_select="h263_encoder"
1638 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1639 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1640 shorten_decoder_select="golomb"
1641 sipr_decoder_select="lsp"
1642 sp5x_decoder_select="dsputil hpeldsp"
1643 svq1_decoder_select="hpeldsp"
1644 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1645 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1646 svq3_decoder_suggest="error_resilience zlib"
1647 tak_decoder_select="dsputil"
1648 theora_decoder_select="vp3_decoder"
1649 tiff_decoder_suggest="zlib"
1650 tiff_encoder_suggest="zlib"
1651 thp_decoder_select="dsputil hpeldsp"
1652 truehd_decoder_select="mlp_decoder"
1653 truemotion2_decoder_select="dsputil"
1654 truespeech_decoder_select="dsputil"
1655 tscc_decoder_select="zlib"
1656 twinvq_decoder_select="mdct lsp sinewin"
1657 utvideo_decoder_select="dsputil"
1658 utvideo_encoder_select="dsputil huffman"
1659 vble_decoder_select="dsputil"
1660 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1661 vc1image_decoder_select="vc1_decoder"
1662 vorbis_decoder_select="mdct"
1663 vorbis_encoder_select="mdct"
1664 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1665 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1666 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1667 vp6a_decoder_select="vp6_decoder"
1668 vp6f_decoder_select="vp6_decoder"
1669 vp8_decoder_select="h264pred videodsp"
1670 wmapro_decoder_select="mdct sinewin"
1671 wmav1_decoder_select="mdct sinewin"
1672 wmav1_encoder_select="mdct sinewin"
1673 wmav2_decoder_select="mdct sinewin"
1674 wmav2_encoder_select="mdct sinewin"
1675 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1676 wmv1_decoder_select="h263_decoder"
1677 wmv1_encoder_select="h263_encoder"
1678 wmv2_decoder_select="h263_decoder videodsp"
1679 wmv2_encoder_select="h263_encoder"
1680 wmv3_decoder_select="vc1_decoder"
1681 wmv3image_decoder_select="wmv3_decoder"
1682 zerocodec_decoder_select="zlib"
1683 zlib_decoder_select="zlib"
1684 zlib_encoder_select="zlib"
1685 zmbv_decoder_select="zlib"
1686 zmbv_encoder_select="zlib"
1687
1688 # hardware accelerators
1689 dxva2_deps="dxva2api_h"
1690 vaapi_deps="va_va_h"
1691 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1692 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1693 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1694
1695 h263_vaapi_hwaccel_deps="vaapi"
1696 h263_vaapi_hwaccel_select="h263_decoder"
1697 h263_vdpau_hwaccel_deps="vdpau"
1698 h263_vdpau_hwaccel_select="h263_decoder"
1699 h264_dxva2_hwaccel_deps="dxva2"
1700 h264_dxva2_hwaccel_select="h264_decoder"
1701 h264_vaapi_hwaccel_deps="vaapi"
1702 h264_vaapi_hwaccel_select="h264_decoder"
1703 h264_vda_hwaccel_deps="vda"
1704 h264_vda_hwaccel_select="h264_decoder"
1705 h264_vdpau_decoder_deps="vdpau"
1706 h264_vdpau_decoder_select="h264_decoder"
1707 h264_vdpau_hwaccel_deps="vdpau"
1708 h264_vdpau_hwaccel_select="h264_decoder"
1709 mpeg_vdpau_decoder_deps="vdpau"
1710 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1711 mpeg1_vdpau_decoder_deps="vdpau"
1712 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1713 mpeg1_vdpau_hwaccel_deps="vdpau"
1714 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1715 mpeg2_dxva2_hwaccel_deps="dxva2"
1716 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1717 mpeg2_vaapi_hwaccel_deps="vaapi"
1718 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1719 mpeg2_vdpau_hwaccel_deps="vdpau"
1720 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1721 mpeg4_vaapi_hwaccel_deps="vaapi"
1722 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1723 mpeg4_vdpau_decoder_deps="vdpau"
1724 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1725 mpeg4_vdpau_hwaccel_deps="vdpau"
1726 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1727 vc1_dxva2_hwaccel_deps="dxva2"
1728 vc1_dxva2_hwaccel_select="vc1_decoder"
1729 vc1_vaapi_hwaccel_deps="vaapi"
1730 vc1_vaapi_hwaccel_select="vc1_decoder"
1731 vc1_vdpau_decoder_deps="vdpau"
1732 vc1_vdpau_decoder_select="vc1_decoder"
1733 vc1_vdpau_hwaccel_deps="vdpau"
1734 vc1_vdpau_hwaccel_select="vc1_decoder"
1735 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1736 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1737 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1738 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1739
1740 # parsers
1741 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1742 mpeg4video_parser_select="error_resilience mpegvideo"
1743 mpegvideo_parser_select="error_resilience mpegvideo"
1744 vc1_parser_select="mpegvideo"
1745
1746 # external libraries
1747 libfaac_encoder_deps="libfaac"
1748 libfaac_encoder_select="audio_frame_queue"
1749 libfdk_aac_encoder_deps="libfdk_aac"
1750 libfdk_aac_encoder_select="audio_frame_queue"
1751 libgsm_decoder_deps="libgsm"
1752 libgsm_encoder_deps="libgsm"
1753 libgsm_ms_decoder_deps="libgsm"
1754 libgsm_ms_encoder_deps="libgsm"
1755 libilbc_decoder_deps="libilbc"
1756 libilbc_encoder_deps="libilbc"
1757 libmp3lame_encoder_deps="libmp3lame"
1758 libmp3lame_encoder_select="audio_frame_queue"
1759 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1760 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1761 libopencore_amrnb_encoder_select="audio_frame_queue"
1762 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1763 libopenjpeg_decoder_deps="libopenjpeg"
1764 libopenjpeg_encoder_deps="libopenjpeg"
1765 libopus_decoder_deps="libopus"
1766 libopus_encoder_deps="libopus"
1767 libopus_encoder_select="audio_frame_queue"
1768 libschroedinger_decoder_deps="libschroedinger"
1769 libschroedinger_encoder_deps="libschroedinger"
1770 libspeex_decoder_deps="libspeex"
1771 libspeex_encoder_deps="libspeex"
1772 libspeex_encoder_select="audio_frame_queue"
1773 libtheora_encoder_deps="libtheora"
1774 libvo_aacenc_encoder_deps="libvo_aacenc"
1775 libvo_aacenc_encoder_select="audio_frame_queue"
1776 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1777 libvorbis_encoder_deps="libvorbis"
1778 libvorbis_encoder_select="audio_frame_queue"
1779 libvpx_vp8_decoder_deps="libvpx"
1780 libvpx_vp8_encoder_deps="libvpx"
1781 libvpx_vp9_decoder_deps="libvpx"
1782 libvpx_vp9_encoder_deps="libvpx"
1783 libx264_encoder_deps="libx264"
1784 libxavs_encoder_deps="libxavs"
1785 libxvid_encoder_deps="libxvid"
1786
1787 # demuxers / muxers
1788 ac3_demuxer_select="ac3_parser"
1789 asf_stream_muxer_select="asf_muxer"
1790 avisynth_demuxer_deps="avisynth"
1791 dirac_demuxer_select="dirac_parser"
1792 eac3_demuxer_select="ac3_parser"
1793 flac_demuxer_select="flac_parser"
1794 ipod_muxer_select="mov_muxer"
1795 ismv_muxer_select="mov_muxer"
1796 matroska_audio_muxer_select="matroska_muxer"
1797 matroska_demuxer_suggest="bzlib lzo zlib"
1798 mov_demuxer_suggest="zlib"
1799 mov_muxer_select="rtpenc_chain"
1800 mp3_demuxer_select="mpegaudio_parser"
1801 mp4_muxer_select="mov_muxer"
1802 mpegts_muxer_select="adts_muxer latm_muxer"
1803 mpegtsraw_demuxer_select="mpegts_demuxer"
1804 mxf_d10_muxer_select="mxf_muxer"
1805 ogg_demuxer_select="golomb"
1806 psp_muxer_select="mov_muxer"
1807 rtp_demuxer_select="sdp_demuxer"
1808 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1809 rtsp_demuxer_select="http_protocol rtpdec"
1810 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1811 sap_demuxer_select="sdp_demuxer"
1812 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1813 sdp_demuxer_select="rtpdec"
1814 smoothstreaming_muxer_select="ismv_muxer"
1815 spdif_muxer_select="aac_parser"
1816 tak_demuxer_select="tak_parser"
1817 tg2_muxer_select="mov_muxer"
1818 tgp_muxer_select="mov_muxer"
1819 w64_demuxer_deps="wav_demuxer"
1820
1821 # indevs / outdevs
1822 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1823 alsa_outdev_deps="alsa_asoundlib_h"
1824 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1825 dv1394_indev_deps="dv1394 dv_demuxer"
1826 fbdev_indev_deps="linux_fb_h"
1827 jack_indev_deps="jack_jack_h"
1828 libcdio_indev_deps="libcdio"
1829 libdc1394_indev_deps="libdc1394"
1830 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1831 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1832 pulse_indev_deps="libpulse"
1833 sndio_indev_deps="sndio_h"
1834 sndio_outdev_deps="sndio_h"
1835 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1836 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1837 vfwcap_indev_extralibs="-lavicap32"
1838 x11grab_indev_deps="x11grab XShmCreateImage"
1839
1840 # protocols
1841 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1842 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1843 ffrtmpcrypt_protocol_select="tcp_protocol"
1844 ffrtmphttp_protocol_deps="!librtmp_protocol"
1845 ffrtmphttp_protocol_select="http_protocol"
1846 gopher_protocol_select="network"
1847 httpproxy_protocol_select="tcp_protocol"
1848 http_protocol_select="tcp_protocol"
1849 https_protocol_select="tls_protocol"
1850 librtmp_protocol_deps="librtmp"
1851 librtmpe_protocol_deps="librtmp"
1852 librtmps_protocol_deps="librtmp"
1853 librtmpt_protocol_deps="librtmp"
1854 librtmpte_protocol_deps="librtmp"
1855 mmsh_protocol_select="http_protocol"
1856 mmst_protocol_select="network"
1857 rtmp_protocol_deps="!librtmp_protocol"
1858 rtmp_protocol_select="tcp_protocol"
1859 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1860 rtmps_protocol_deps="!librtmp_protocol"
1861 rtmps_protocol_select="tls_protocol"
1862 rtmpt_protocol_select="ffrtmphttp_protocol"
1863 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1864 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1865 rtp_protocol_select="udp_protocol"
1866 sctp_protocol_deps="struct_sctp_event_subscribe"
1867 sctp_protocol_select="network"
1868 srtp_protocol_select="rtp_protocol"
1869 tcp_protocol_select="network"
1870 tls_protocol_deps_any="openssl gnutls"
1871 tls_protocol_select="tcp_protocol"
1872 udp_protocol_select="network"
1873
1874 # filters
1875 blackframe_filter_deps="gpl"
1876 boxblur_filter_deps="gpl"
1877 cropdetect_filter_deps="gpl"
1878 delogo_filter_deps="gpl"
1879 drawtext_filter_deps="libfreetype"
1880 frei0r_filter_deps="frei0r dlopen strtok_r"
1881 frei0r_filter_extralibs='$ldl'
1882 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1883 frei0r_src_filter_extralibs='$ldl'
1884 hqdn3d_filter_deps="gpl"
1885 interlace_filter_deps="gpl"
1886 resample_filter_deps="avresample"
1887 ocv_filter_deps="libopencv"
1888 scale_filter_deps="swscale"
1889 yadif_filter_deps="gpl"
1890
1891 # libraries
1892 avcodec_deps="avutil"
1893 avdevice_deps="avutil avcodec avformat"
1894 avfilter_deps="avutil"
1895 avformat_deps="avutil avcodec"
1896 avresample_deps="avutil"
1897 swscale_deps="avutil"
1898
1899 # programs
1900 avconv_deps="avcodec avfilter avformat avresample swscale"
1901 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1902                fps_filter null_filter resample_filter scale_filter
1903                setpts_filter"
1904 avplay_deps="avcodec avformat avresample swscale sdl"
1905 avplay_select="rdft"
1906 avprobe_deps="avcodec avformat"
1907 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1908 avserver_extralibs='$ldl'
1909
1910 doc_deps="texi2html"
1911
1912 # default parameters
1913
1914 logfile="config.log"
1915
1916 # installation paths
1917 prefix_default="/usr/local"
1918 bindir_default='${prefix}/bin'
1919 datadir_default='${prefix}/share/avconv'
1920 incdir_default='${prefix}/include'
1921 libdir_default='${prefix}/lib'
1922 mandir_default='${prefix}/share/man'
1923 shlibdir_default="$libdir_default"
1924
1925 # toolchain
1926 ar_default="ar"
1927 cc_default="gcc"
1928 host_cc_default="gcc"
1929 cp_f="cp -f"
1930 ln_s="ln -s -f"
1931 nm_default="nm -g"
1932 objformat="elf"
1933 pkg_config_default=pkg-config
1934 ranlib="ranlib"
1935 yasmexe="yasm"
1936
1937 nogas=":"
1938
1939 # machine
1940 arch_default=$(uname -m)
1941 cpu="generic"
1942
1943 # OS
1944 target_os_default=$(tolower $(uname -s))
1945 host_os=$target_os_default
1946
1947 # configurable options
1948 enable $LIBRARY_LIST $PROGRAM_LIST
1949
1950 enable asm
1951 enable debug
1952 enable doc
1953 enable optimizations
1954 enable safe_bitstream_reader
1955 enable static
1956 enable swscale_alpha
1957
1958 # By default, enable only those hwaccels that have no external dependencies.
1959 enable dxva2 vdpau
1960
1961 # build settings
1962 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1963 AVSERVERLDFLAGS=-Wl,-E
1964 LIBPREF="lib"
1965 LIBSUF=".a"
1966 FULLNAME='$(NAME)$(BUILDSUF)'
1967 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1968 SLIBPREF="lib"
1969 SLIBSUF=".so"
1970 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1971 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1972 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1973 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1974 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1975 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1976
1977 asflags_filter=echo
1978 cflags_filter=echo
1979 ldflags_filter=echo
1980
1981 AS_C='-c'
1982 AS_O='-o $@'
1983 CC_C='-c'
1984 CC_E='-E -o $@'
1985 CC_O='-o $@'
1986 LD_O='-o $@'
1987 LD_LIB='-l%'
1988 LD_PATH='-L'
1989 HOSTCC_C='-c'
1990 HOSTCC_O='-o $@'
1991 HOSTLD_O='-o $@'
1992
1993 host_cflags='-O3 -g'
1994 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1995 host_libs='-lm'
1996 host_cflags_filter=echo
1997 host_ldflags_filter=echo
1998
1999 target_path='$(CURDIR)'
2000
2001 # since the object filename is not given with the -MM flag, the compiler
2002 # is only able to print the basename, and we must add the path ourselves
2003 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2004 DEPFLAGS='-MM'
2005
2006 # find source path
2007 if test -f configure; then
2008     source_path=.
2009 else
2010     source_path=$(cd $(dirname "$0"); pwd)
2011     echo "$source_path" | grep -q '[[:blank:]]' &&
2012         die "Out of tree builds are impossible with whitespace in source path."
2013     test -e "$source_path/config.h" &&
2014         die "Out of tree builds are impossible with config.h in source dir."
2015 fi
2016
2017 for v in "$@"; do
2018     r=${v#*=}
2019     l=${v%"$r"}
2020     r=$(sh_quote "$r")
2021     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2022 done
2023
2024 find_things(){
2025     thing=$1
2026     pattern=$2
2027     file=$source_path/$3
2028     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2029 }
2030
2031 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2032 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2033 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2034 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2035 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2036 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2037 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2038 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2039 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2040 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2041 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2042
2043 ALL_COMPONENTS="
2044     $BSF_LIST
2045     $DECODER_LIST
2046     $DEMUXER_LIST
2047     $ENCODER_LIST
2048     $FILTER_LIST
2049     $HWACCEL_LIST
2050     $INDEV_LIST
2051     $MUXER_LIST
2052     $OUTDEV_LIST
2053     $PARSER_LIST
2054     $PROTOCOL_LIST
2055 "
2056
2057 for n in $COMPONENT_LIST; do
2058     v=$(toupper ${n%s})_LIST
2059     eval enable \$$v
2060     eval ${n}_if_any="\$$v"
2061 done
2062
2063 enable $ARCH_EXT_LIST
2064
2065 die_unknown(){
2066     echo "Unknown option \"$1\"."
2067     echo "See $0 --help for available options."
2068     exit 1
2069 }
2070
2071 print_3_columns() {
2072     cat | tr ' ' '\n' | sort | pr -r -3 -t
2073 }
2074
2075 show_list() {
2076     suffix=_$1
2077     shift
2078     echo $* | sed s/$suffix//g | print_3_columns
2079     exit 0
2080 }
2081
2082 rand_list(){
2083     IFS=', '
2084     set -- $*
2085     unset IFS
2086     for thing; do
2087         comp=${thing%:*}
2088         prob=${thing#$comp}
2089         prob=${prob#:}
2090         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2091         echo "prob ${prob:-0.5}"
2092         printf '%s\n' $comp
2093     done
2094 }
2095
2096 do_random(){
2097     action=$1
2098     shift
2099     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2100     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2101 }
2102
2103 for opt do
2104     optval="${opt#*=}"
2105     case "$opt" in
2106         --extra-ldflags=*)
2107             add_ldflags $optval
2108         ;;
2109         --extra-libs=*)
2110             add_extralibs $optval
2111         ;;
2112         --disable-devices)
2113             disable $INDEV_LIST $OUTDEV_LIST
2114         ;;
2115         --enable-debug=*)
2116             debuglevel="$optval"
2117         ;;
2118         --disable-programs)
2119             disable $PROGRAM_LIST
2120         ;;
2121         --disable-everything)
2122             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2123         ;;
2124         --disable-all)
2125             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2126             disable $LIBRARY_LIST $PROGRAM_LIST doc
2127         ;;
2128         --enable-random|--disable-random)
2129             action=${opt%%-random}
2130             do_random ${action#--} $COMPONENT_LIST
2131         ;;
2132         --enable-random=*|--disable-random=*)
2133             action=${opt%%-random=*}
2134             do_random ${action#--} $optval
2135         ;;
2136         --enable-*=*|--disable-*=*)
2137             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2138             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2139             eval list=\$$(toupper $thing)_LIST
2140             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2141             $action $(filter "$name" $list)
2142         ;;
2143         --enable-?*|--disable-?*)
2144             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2145             if is_in $option $COMPONENT_LIST; then
2146                 test $action = disable && action=unset
2147                 eval $action \$$(toupper ${option%s})_LIST
2148             elif is_in $option $CMDLINE_SELECT; then
2149                 $action $option
2150             else
2151                 die_unknown $opt
2152             fi
2153         ;;
2154         --list-*)
2155             NAME="${opt#--list-}"
2156             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2157             NAME=${NAME%s}
2158             eval show_list $NAME \$$(toupper $NAME)_LIST
2159         ;;
2160         --help|-h) show_help
2161         ;;
2162         *)
2163             optname="${opt%%=*}"
2164             optname="${optname#--}"
2165             optname=$(echo "$optname" | sed 's/-/_/g')
2166             if is_in $optname $CMDLINE_SET; then
2167                 eval $optname='$optval'
2168             elif is_in $optname $CMDLINE_APPEND; then
2169                 append $optname "$optval"
2170             else
2171                 die_unknown $opt
2172             fi
2173         ;;
2174     esac
2175 done
2176
2177 disabled logging && logfile=/dev/null
2178
2179 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2180 set >> $logfile
2181
2182 test -n "$cross_prefix" && enable cross_compile
2183
2184 if enabled cross_compile; then
2185     test -n "$arch" && test -n "$target_os" ||
2186         die "Must specify target arch and OS when cross-compiling"
2187 fi
2188
2189 ar_default="${cross_prefix}${ar_default}"
2190 cc_default="${cross_prefix}${cc_default}"
2191 nm_default="${cross_prefix}${nm_default}"
2192 pkg_config_default="${cross_prefix}${pkg_config_default}"
2193 ranlib="${cross_prefix}${ranlib}"
2194
2195 sysinclude_default="${sysroot}/usr/include"
2196
2197 case "$toolchain" in
2198     clang-asan)
2199         cc_default="clang"
2200         add_cflags  -fsanitize=address
2201         add_ldflags -fsanitize=address
2202     ;;
2203     clang-tsan)
2204         cc_default="clang"
2205         add_cflags  -fsanitize=thread -pie
2206         add_ldflags -fsanitize=thread -pie
2207     ;;
2208     msvc)
2209         cc_default="c99wrap cl"
2210         ld_default="c99wrap link"
2211         nm_default="dumpbin -symbols"
2212         ar_default="lib"
2213         target_os_default="win32"
2214     ;;
2215     gcov)
2216         add_cflags  -fprofile-arcs -ftest-coverage
2217         add_ldflags -fprofile-arcs -ftest-coverage
2218     ;;
2219     ?*)
2220         die "Unknown toolchain $toolchain"
2221     ;;
2222 esac
2223
2224 set_default arch cc pkg_config sysinclude target_os
2225 enabled cross_compile || host_cc_default=$cc
2226 set_default host_cc
2227
2228 if ! $pkg_config --version >/dev/null 2>&1; then
2229     warn "$pkg_config not found, library detection may fail."
2230     pkg_config=false
2231 fi
2232
2233 exesuf() {
2234     case $1 in
2235         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2236     esac
2237 }
2238
2239 EXESUF=$(exesuf $target_os)
2240 HOSTEXESUF=$(exesuf $host_os)
2241
2242 # set temporary file name
2243 : ${TMPDIR:=$TEMPDIR}
2244 : ${TMPDIR:=$TMP}
2245 : ${TMPDIR:=/tmp}
2246
2247 if ! check_cmd mktemp -u XXXXXX; then
2248     # simple replacement for missing mktemp
2249     # NOT SAFE FOR GENERAL USE
2250     mktemp(){
2251         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2252     }
2253 fi
2254
2255 tmpfile(){
2256     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2257         (set -C; exec > $tmp) 2>/dev/null ||
2258         die "Unable to create temporary file in $TMPDIR."
2259     append TMPFILES $tmp
2260     eval $1=$tmp
2261 }
2262
2263 trap 'rm -f -- $TMPFILES' EXIT
2264
2265 tmpfile TMPASM .asm
2266 tmpfile TMPC   .c
2267 tmpfile TMPE   $EXESUF
2268 tmpfile TMPH   .h
2269 tmpfile TMPO   .o
2270 tmpfile TMPS   .S
2271 tmpfile TMPSH  .sh
2272 tmpfile TMPV   .ver
2273
2274 unset -f mktemp
2275
2276 chmod +x $TMPE
2277
2278 # make sure we can execute files in $TMPDIR
2279 cat > $TMPSH 2>> $logfile <<EOF
2280 #! /bin/sh
2281 EOF
2282 chmod +x $TMPSH >> $logfile 2>&1
2283 if ! $TMPSH >> $logfile 2>&1; then
2284     cat <<EOF
2285 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2286 variable to another directory and make sure that it is not mounted noexec.
2287 EOF
2288     die "Sanity test failed."
2289 fi
2290
2291 ccc_flags(){
2292     for flag; do
2293         case $flag in
2294             -std=c99)           echo -c99                       ;;
2295             -mcpu=*)            echo -arch ${flag#*=}           ;;
2296             -mieee)             echo -ieee                      ;;
2297             -O*|-fast)          echo $flag                      ;;
2298             -fno-math-errno)    echo -assume nomath_errno       ;;
2299             -g)                 echo -g3                        ;;
2300             -Wall)              echo -msg_enable level2         ;;
2301             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2302             -Wl,*)              echo $flag                      ;;
2303             -f*|-W*)                                            ;;
2304             *)                  echo $flag                      ;;
2305         esac
2306    done
2307 }
2308
2309 msvc_flags(){
2310     for flag; do
2311         case $flag in
2312             -fomit-frame-pointer) echo -Oy ;;
2313             -g)                   echo -Z7 ;;
2314             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2315                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2316                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2317                                        -wd4996 -wd4273 ;;
2318             -std=c99)             ;;
2319             -fno-math-errno)      ;;
2320             -fno-common)          ;;
2321             -fno-signed-zeros)    ;;
2322             -fPIC)                ;;
2323             -lz)                  echo zlib.lib ;;
2324             -lavifil32)           echo vfw32.lib ;;
2325             -lavicap32)           echo vfw32.lib user32.lib ;;
2326             -l*)                  echo ${flag#-l}.lib ;;
2327             *)                    echo $flag ;;
2328         esac
2329     done
2330 }
2331
2332 pgi_flags(){
2333     for flag; do
2334         case $flag in
2335             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2336             -fomit-frame-pointer) echo -Mnoframe ;;
2337             -g)                   echo -gopt ;;
2338             *)                    echo $flag ;;
2339         esac
2340     done
2341 }
2342
2343 suncc_flags(){
2344     for flag; do
2345         case $flag in
2346             -march=*|-mcpu=*)
2347                 case "${flag#*=}" in
2348                     native)                   echo -xtarget=native       ;;
2349                     v9|niagara)               echo -xarch=sparc          ;;
2350                     ultrasparc)               echo -xarch=sparcvis       ;;
2351                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2352                     i586|pentium)             echo -xchip=pentium        ;;
2353                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2354                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2355                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2356                     pentium4*)          echo -xtarget=pentium4           ;;
2357                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2358                     *-sse3)             echo -xarch=sse3                 ;;
2359                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2360                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2361                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2362                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2363                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2364                     k8|opteron|athlon64|athlon-fx)
2365                                               echo -xarch=sse2a          ;;
2366                     athlon*)                  echo -xarch=pentium_proa   ;;
2367                 esac
2368                 ;;
2369             -std=c99)             echo -xc99              ;;
2370             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2371             -fPIC)                echo -KPIC -xcode=pic32 ;;
2372             -W*,*)                echo $flag              ;;
2373             -f*-*|-W*|-mimpure-text)                      ;;
2374             -shared)              echo -G                 ;;
2375             *)                    echo $flag              ;;
2376         esac
2377     done
2378 }
2379
2380 tms470_flags(){
2381     for flag; do
2382         case $flag in
2383             -march=*|-mcpu=*)
2384                 case "${flag#*=}" in
2385                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2386                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2387                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2388                     armv6*|arm11*)          echo -mv=6   ;;
2389                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2390                                             echo -mv=5e  ;;
2391                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2392                 esac
2393                 ;;
2394             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2395             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2396             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2397             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2398             -msoft-float)   echo --float_support=vfplib       ;;
2399             -O[0-3]|-mf=*)  echo $flag                        ;;
2400             -g)             echo -g -mn                       ;;
2401             -pds=*)         echo $flag                        ;;
2402             -D*|-I*)        echo $flag                        ;;
2403             --gcc|--abi=*)  echo $flag                        ;;
2404             -me)            echo $flag                        ;;
2405         esac
2406     done
2407 }
2408
2409 probe_cc(){
2410     pfx=$1
2411     _cc=$2
2412
2413     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2414     unset _ld_o _ldflags _ld_lib _ld_path
2415     unset _depflags _DEPCMD _DEPFLAGS
2416     _flags_filter=echo
2417
2418     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2419         _type=llvm_gcc
2420         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2421         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2422         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2423         _cflags_speed='-O3'
2424         _cflags_size='-Os'
2425     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2426         _type=gcc
2427         gcc_version=$($_cc --version | head -n1)
2428         gcc_basever=$($_cc -dumpversion)
2429         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2430         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2431         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2432         if ! $_cc -dumpversion | grep -q '^2\.'; then
2433             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2434         fi
2435         _cflags_speed='-O3'
2436         _cflags_size='-Os'
2437     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2438         _type=icc
2439         _ident=$($_cc --version | head -n1)
2440         _depflags='-MMD'
2441         _cflags_speed='-O3'
2442         _cflags_size='-Os'
2443         _cflags_noopt='-O1'
2444     elif $_cc -v 2>&1 | grep -q xlc; then
2445         _type=xlc
2446         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2447         _cflags_speed='-O5'
2448         _cflags_size='-O5 -qcompact'
2449     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2450         _type=ccc
2451         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2452         _DEPFLAGS='-M'
2453         _cflags_speed='-fast'
2454         _cflags_size='-O1'
2455         _flags_filter=ccc_flags
2456     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2457         test -d "$sysroot" || die "No valid sysroot specified."
2458         _type=armcc
2459         _ident=$($_cc --vsn | head -n1)
2460         armcc_conf="$PWD/armcc.conf"
2461         $_cc --arm_linux_configure                 \
2462              --arm_linux_config_file="$armcc_conf" \
2463              --configure_sysroot="$sysroot"        \
2464              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2465              die "Error creating armcc configuration file."
2466         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2467         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2468         as_default="${cross_prefix}gcc"
2469         _depflags='-MMD'
2470         _cflags_speed='-O3'
2471         _cflags_size='-Os'
2472     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2473         _type=tms470
2474         _ident=$($_cc -version | head -n1 | tr -s ' ')
2475         _flags='--gcc --abi=eabi -me'
2476         _cc_e='-ppl -fe=$@'
2477         _cc_o='-fe=$@'
2478         _depflags='-ppa -ppd=$(@:.o=.d)'
2479         _cflags_speed='-O3 -mf=5'
2480         _cflags_size='-O3 -mf=2'
2481         _flags_filter=tms470_flags
2482     elif $_cc -v 2>&1 | grep -q clang; then
2483         _type=clang
2484         _ident=$($_cc --version | head -n1)
2485         _depflags='-MMD'
2486         _cflags_speed='-O3'
2487         _cflags_size='-Os'
2488     elif $_cc -V 2>&1 | grep -q Sun; then
2489         _type=suncc
2490         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2491         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2492         _DEPFLAGS='-xM1 -xc99'
2493         _ldflags='-std=c99'
2494         _cflags_speed='-O5'
2495         _cflags_size='-O5 -xspace'
2496         _flags_filter=suncc_flags
2497     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2498         _type=pathscale
2499         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2500         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2501         _cflags_speed='-O2'
2502         _cflags_size='-Os'
2503         _flags_filter='filter_out -Wdisabled-optimization'
2504     elif $_cc -v 2>&1 | grep -q Open64; then
2505         _type=open64
2506         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2507         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2508         _cflags_speed='-O2'
2509         _cflags_size='-Os'
2510         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2511     elif $_cc -V 2>&1 | grep -q Portland; then
2512         _type=pgi
2513         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2514         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2515         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2516         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2517         _cflags_noopt="-O1"
2518         _flags_filter=pgi_flags
2519     elif $_cc 2>&1 | grep -q Microsoft; then
2520         _type=msvc
2521         _ident=$($cc 2>&1 | head -n1)
2522         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2523         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2524         _cflags_speed="-O2"
2525         _cflags_size="-O1"
2526         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2527         if $_cc 2>&1 | grep -q Linker; then
2528             _ld_o='-out $@'
2529         else
2530             _ld_o='-Fe$@'
2531         fi
2532         _cc_o='-Fo $@'
2533         _cc_e='-P -Fi $@'
2534         _flags_filter=msvc_flags
2535         _ld_lib='lib%.a'
2536         _ld_path='-libpath:'
2537         _flags='-nologo'
2538         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2539         if [ $pfx = hostcc ]; then
2540             append _cflags -Dsnprintf=_snprintf
2541         fi
2542     fi
2543
2544     eval ${pfx}_type=\$_type
2545     eval ${pfx}_ident=\$_ident
2546 }
2547
2548 set_ccvars(){
2549     eval ${1}_C=\${_cc_c-\${${1}_C}}
2550     eval ${1}_E=\${_cc_e-\${${1}_E}}
2551     eval ${1}_O=\${_cc_o-\${${1}_O}}
2552
2553     if [ -n "$_depflags" ]; then
2554         eval ${1}_DEPFLAGS=\$_depflags
2555     else
2556         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2557         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2558         eval DEP${1}FLAGS=\$_flags
2559     fi
2560 }
2561
2562 probe_cc cc "$cc"
2563 cflags_filter=$_flags_filter
2564 cflags_speed=$_cflags_speed
2565 cflags_size=$_cflags_size
2566 cflags_noopt=$_cflags_noopt
2567 add_cflags $_flags $_cflags
2568 cc_ldflags=$_ldflags
2569 set_ccvars CC
2570
2571 probe_cc hostcc "$host_cc"
2572 host_cflags_filter=$_flags_filter
2573 add_host_cflags  $_flags $_cflags
2574 set_ccvars HOSTCC
2575
2576 test -n "$cc_type" && enable $cc_type ||
2577     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2578
2579 : ${as_default:=$cc}
2580 : ${dep_cc_default:=$cc}
2581 : ${ld_default:=$cc}
2582 : ${host_ld_default:=$host_cc}
2583 set_default ar as dep_cc ld host_ld
2584
2585 probe_cc as "$as"
2586 asflags_filter=$_flags_filter
2587 add_asflags $_flags $_cflags
2588 set_ccvars AS
2589
2590 probe_cc ld "$ld"
2591 ldflags_filter=$_flags_filter
2592 add_ldflags $_flags $_ldflags
2593 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2594 LD_O=${_ld_o-$LD_O}
2595 LD_LIB=${_ld_lib-$LD_LIB}
2596 LD_PATH=${_ld_path-$LD_PATH}
2597
2598 probe_cc hostld "$host_ld"
2599 host_ldflags_filter=$_flags_filter
2600 add_host_ldflags $_flags $_ldflags
2601 HOSTLD_O=${_ld_o-$HOSTLD_O}
2602
2603 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2604     probe_cc depcc "$dep_cc"
2605     CCDEP=${_DEPCMD:-$DEPCMD}
2606     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2607     DEPCCFLAGS=$_flags
2608 fi
2609
2610 if $ar 2>&1 | grep -q Microsoft; then
2611     arflags="-nologo"
2612     ar_o='-out:$@'
2613 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2614     arflags="rq"
2615     ar_o='$@'
2616 else
2617     arflags="rc"
2618     ar_o='$@'
2619 fi
2620
2621 add_cflags $extra_cflags
2622 add_asflags $extra_cflags
2623
2624 if test -n "$sysroot"; then
2625     case "$cc_type" in
2626         gcc|llvm_gcc|clang)
2627             add_cppflags --sysroot="$sysroot"
2628             add_ldflags --sysroot="$sysroot"
2629         ;;
2630         tms470)
2631             add_cppflags -I"$sysinclude"
2632             add_ldflags  --sysroot="$sysroot"
2633         ;;
2634     esac
2635 fi
2636
2637 if test "$cpu" = host; then
2638     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2639
2640     case "$cc_type" in
2641         gcc|llvm_gcc)
2642             check_native(){
2643                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2644                 sed -n "/cc1.*$1=/{
2645                             s/.*$1=\\([^ ]*\\).*/\\1/
2646                             p
2647                             q
2648                         }" $TMPE
2649             }
2650             cpu=$(check_native -march || check_native -mcpu)
2651         ;;
2652     esac
2653
2654     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2655 fi
2656
2657 # Deal with common $arch aliases
2658 case "$arch" in
2659     aarch64|arm64)
2660         arch="aarch64"
2661     ;;
2662     arm*)
2663         arch="arm"
2664     ;;
2665     mips*|IP*)
2666         arch="mips"
2667     ;;
2668     parisc*|hppa*)
2669         arch="parisc"
2670     ;;
2671     "Power Macintosh"|ppc*|powerpc*)
2672         arch="ppc"
2673     ;;
2674     s390|s390x)
2675         arch="s390"
2676     ;;
2677     sh4|sh)
2678         arch="sh4"
2679     ;;
2680     sun4u|sparc*)
2681         arch="sparc"
2682     ;;
2683     tilegx|tile-gx)
2684         arch="tilegx"
2685     ;;
2686     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2687         arch="x86"
2688     ;;
2689 esac
2690
2691 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2692 enable $arch
2693
2694 # Add processor-specific flags
2695 if enabled aarch64; then
2696
2697     case $cpu in
2698         armv*)
2699             cpuflags="-march=$cpu"
2700         ;;
2701         *)
2702             cpuflags="-mcpu=$cpu"
2703         ;;
2704     esac
2705
2706 elif enabled alpha; then
2707
2708     cpuflags="-mcpu=$cpu"
2709
2710 elif enabled arm; then
2711
2712     check_arm_arch() {
2713         check_cpp_condition stddef.h \
2714             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2715             $cpuflags
2716     }
2717
2718     probe_arm_arch() {
2719         if   check_arm_arch 4;        then echo armv4;
2720         elif check_arm_arch 4T;       then echo armv4t;
2721         elif check_arm_arch 5;        then echo armv5;
2722         elif check_arm_arch 5E;       then echo armv5e;
2723         elif check_arm_arch 5T;       then echo armv5t;
2724         elif check_arm_arch 5TE;      then echo armv5te;
2725         elif check_arm_arch 5TEJ;     then echo armv5te;
2726         elif check_arm_arch 6;        then echo armv6;
2727         elif check_arm_arch 6J;       then echo armv6j;
2728         elif check_arm_arch 6K;       then echo armv6k;
2729         elif check_arm_arch 6Z;       then echo armv6z;
2730         elif check_arm_arch 6ZK;      then echo armv6zk;
2731         elif check_arm_arch 6T2;      then echo armv6t2;
2732         elif check_arm_arch 7;        then echo armv7;
2733         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2734         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2735         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2736         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2737         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2738         fi
2739     }
2740
2741     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2742
2743     case $cpu in
2744         armv*)
2745             cpuflags="-march=$cpu"
2746             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2747         ;;
2748         *)
2749             cpuflags="-mcpu=$cpu"
2750             case $cpu in
2751                 cortex-a*)                               subarch=armv7a  ;;
2752                 cortex-r*)                               subarch=armv7r  ;;
2753                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2754                 arm11*)                                  subarch=armv6   ;;
2755                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2756                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2757                 *)                             subarch=$(probe_arm_arch) ;;
2758             esac
2759         ;;
2760     esac
2761
2762     case "$subarch" in
2763         armv5t*)    enable fast_clz                ;;
2764         armv[6-8]*) enable fast_clz fast_unaligned ;;
2765     esac
2766
2767 elif enabled avr32; then
2768
2769     case $cpu in
2770         ap7[02]0[0-2])
2771             subarch="avr32_ap"
2772             cpuflags="-mpart=$cpu"
2773         ;;
2774         ap)
2775             subarch="avr32_ap"
2776             cpuflags="-march=$cpu"
2777         ;;
2778         uc3[ab]*)
2779             subarch="avr32_uc"
2780             cpuflags="-mcpu=$cpu"
2781         ;;
2782         uc)
2783             subarch="avr32_uc"
2784             cpuflags="-march=$cpu"
2785         ;;
2786     esac
2787
2788 elif enabled bfin; then
2789
2790     cpuflags="-mcpu=$cpu"
2791
2792 elif enabled mips; then
2793
2794     cpuflags="-march=$cpu"
2795
2796 elif enabled ppc; then
2797
2798     case $(tolower $cpu) in
2799         601|ppc601|powerpc601)
2800             cpuflags="-mcpu=601"
2801             disable altivec
2802         ;;
2803         603*|ppc603*|powerpc603*)
2804             cpuflags="-mcpu=603"
2805             disable altivec
2806         ;;
2807         604*|ppc604*|powerpc604*)
2808             cpuflags="-mcpu=604"
2809             disable altivec
2810         ;;
2811         g3|75*|ppc75*|powerpc75*)
2812             cpuflags="-mcpu=750"
2813             disable altivec
2814         ;;
2815         g4|745*|ppc745*|powerpc745*)
2816             cpuflags="-mcpu=7450"
2817         ;;
2818         74*|ppc74*|powerpc74*)
2819             cpuflags="-mcpu=7400"
2820         ;;
2821         g5|970|ppc970|powerpc970)
2822             cpuflags="-mcpu=970"
2823         ;;
2824         power[3-7]*)
2825             cpuflags="-mcpu=$cpu"
2826         ;;
2827         cell)
2828             cpuflags="-mcpu=cell"
2829             enable ldbrx
2830         ;;
2831         e500mc)
2832             cpuflags="-mcpu=e500mc"
2833             disable altivec
2834         ;;
2835         e500v2)
2836             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2837             disable altivec
2838         ;;
2839         e500)
2840             cpuflags="-mcpu=8540 -mhard-float"
2841             disable altivec
2842         ;;
2843     esac
2844
2845 elif enabled sparc; then
2846
2847     case $cpu in
2848         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2849             cpuflags="-mcpu=$cpu"
2850             disable vis
2851         ;;
2852         ultrasparc*|niagara[234])
2853             cpuflags="-mcpu=$cpu"
2854         ;;
2855     esac
2856
2857 elif enabled x86; then
2858
2859     case $cpu in
2860         i[345]86|pentium)
2861             cpuflags="-march=$cpu"
2862             disable mmx
2863         ;;
2864         # targets that do NOT support conditional mov (cmov)
2865         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2866             cpuflags="-march=$cpu"
2867             disable cmov
2868         ;;
2869         # targets that do support conditional mov (cmov)
2870         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2871             cpuflags="-march=$cpu"
2872             enable cmov
2873             enable fast_cmov
2874         ;;
2875         # targets that do support conditional mov but on which it's slow
2876         pentium4|pentium4m|prescott|nocona)
2877             cpuflags="-march=$cpu"
2878             enable cmov
2879             disable fast_cmov
2880         ;;
2881     esac
2882
2883 fi
2884
2885 if [ "$cpu" != generic ]; then
2886     add_cflags  $cpuflags
2887     add_asflags $cpuflags
2888 fi
2889
2890 # compiler sanity check
2891 check_exec <<EOF
2892 int main(void){ return 0; }
2893 EOF
2894 if test "$?" != 0; then
2895     echo "$cc is unable to create an executable file."
2896     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2897         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2898         echo "Only do this if you know what cross compiling means."
2899     fi
2900     die "C compiler test failed."
2901 fi
2902
2903 add_cppflags -D_ISOC99_SOURCE
2904 check_cflags -std=c99
2905 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2906 #include <stdlib.h>
2907 EOF
2908 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2909 #include <stdlib.h>
2910 EOF
2911
2912 check_host_cflags -std=c99
2913 check_host_cflags -Wall
2914
2915 check_64bit(){
2916     arch32=$1
2917     arch64=$2
2918     expr=$3
2919     check_code cc "" "int test[2*($expr) - 1]" &&
2920         subarch=$arch64 || subarch=$arch32
2921 }
2922
2923 case "$arch" in
2924     aarch64|alpha|ia64)
2925         spic=$shared
2926     ;;
2927     mips)
2928         check_64bit mips mips64 '_MIPS_SIM > 1'
2929         spic=$shared
2930     ;;
2931     parisc)
2932         check_64bit parisc parisc64 'sizeof(void *) > 4'
2933         spic=$shared
2934     ;;
2935     ppc)
2936         check_64bit ppc ppc64 'sizeof(void *) > 4'
2937         spic=$shared
2938     ;;
2939     sparc)
2940         check_64bit sparc sparc64 'sizeof(void *) > 4'
2941         spic=$shared
2942     ;;
2943     x86)
2944         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2945         if test "$subarch" = "x86_64"; then
2946             spic=$shared
2947         fi
2948     ;;
2949 esac
2950
2951 enable $subarch
2952 enabled spic && enable pic
2953
2954 # OS specific
2955 case $target_os in
2956     haiku)
2957         prefix_default="/boot/common"
2958         network_extralibs="-lnetwork"
2959         host_libs=
2960         ;;
2961     sunos)
2962         AVSERVERLDFLAGS=""
2963         SHFLAGS='-shared -Wl,-h,$$(@F)'
2964         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2965         network_extralibs="-lsocket -lnsl"
2966         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2967         # When using suncc to build, the Solaris linker will mark
2968         # an executable with each instruction set encountered by
2969         # the Solaris assembler.  As our libraries contain their own
2970         # guards for processor-specific code, instead suppress
2971         # generation of the HWCAPS ELF section on Solaris x86 only.
2972         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2973         nm_default='nm -P -g'
2974         ;;
2975     netbsd)
2976         disable symver
2977         oss_indev_extralibs="-lossaudio"
2978         oss_outdev_extralibs="-lossaudio"
2979         ;;
2980     openbsd|bitrig)
2981         disable symver
2982         SHFLAGS='-shared'
2983         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2984         SLIB_INSTALL_LINKS=
2985         oss_indev_extralibs="-lossaudio"
2986         oss_outdev_extralibs="-lossaudio"
2987         ;;
2988     dragonfly)
2989         disable symver
2990         ;;
2991     freebsd)
2992         ;;
2993     bsd/os)
2994         add_extralibs -lpoll -lgnugetopt
2995         ;;
2996     darwin)
2997         gas="gas-preprocessor.pl $cc"
2998         enabled ppc && add_asflags -force_cpusubtype_ALL
2999         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3000         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3001         add_ldflags -Wl,-dynamic,-search_paths_first
3002         SLIBSUF=".dylib"
3003         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3004         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3005         AVSERVERLDFLAGS=-Wl,-bind_at_load
3006         objformat="macho"
3007         enabled x86_64 && objformat="macho64"
3008         enabled_any pic shared ||
3009             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3010         ;;
3011     mingw32*)
3012         if test $target_os = "mingw32ce"; then
3013             disable network
3014         else
3015             target_os=mingw32
3016         fi
3017         LIBTARGET=i386
3018         if enabled x86_64; then
3019             LIBTARGET="i386:x86-64"
3020         elif enabled arm; then
3021             LIBTARGET=arm-wince
3022         fi
3023         shlibdir_default="$bindir_default"
3024         SLIBPREF=""
3025         SLIBSUF=".dll"
3026         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3027         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3028         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3029         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3030         SLIB_INSTALL_LINKS=
3031         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3032         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3033         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3034         objformat="win32"
3035         dlltool="${cross_prefix}dlltool"
3036         ranlib=:
3037         enable dos_paths
3038         ;;
3039     win32|win64)
3040         if enabled shared; then
3041             # Link to the import library instead of the normal static library
3042             # for shared libs.
3043             LD_LIB='%.lib'
3044             # Cannot build shared and static libraries at the same time with
3045             # MSVC.
3046             disable static
3047         fi
3048         shlibdir_default="$bindir_default"
3049         SLIBPREF=""
3050         SLIBSUF=".dll"
3051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3053         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3054         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3055         SLIB_INSTALL_LINKS=
3056         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3057         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3058         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3059         objformat="win32"
3060         ranlib=:
3061         enable dos_paths
3062         ;;
3063     cygwin*)
3064         target_os=cygwin
3065         shlibdir_default="$bindir_default"
3066         SLIBPREF="cyg"
3067         SLIBSUF=".dll"
3068         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3069         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3070         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3071         SLIB_INSTALL_LINKS=
3072         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3073         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3074         objformat="win32"
3075         enable dos_paths
3076         ;;
3077     *-dos|freedos|opendos)
3078         network_extralibs="-lsocket"
3079         objformat="coff"
3080         enable dos_paths
3081         add_cppflags -U__STRICT_ANSI__
3082         ;;
3083     linux)
3084         enable dv1394
3085         ;;
3086     irix*)
3087         target_os=irix
3088         ranlib="echo ignoring ranlib"
3089         ;;
3090     os/2*)
3091         ln_s="cp -f"
3092         objformat="aout"
3093         add_cppflags -D_GNU_SOURCE
3094         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3095         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3096         AVSERVERLDFLAGS=""
3097         LIBSUF="_s.a"
3098         SLIBPREF=""
3099         SLIBSUF=".dll"
3100         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3101         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3102         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3103             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3104             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3105             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3106             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3107             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3108         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3109             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3110         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3111         enable dos_paths
3112         ;;
3113     gnu/kfreebsd)
3114         add_cppflags -D_BSD_SOURCE
3115         ;;
3116     gnu)
3117         ;;
3118     qnx)
3119         add_cppflags -D_QNX_SOURCE
3120         network_extralibs="-lsocket"
3121         ;;
3122     symbian)
3123         SLIBSUF=".dll"
3124         enable dos_paths
3125         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3126         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3127         add_ldflags -Wl,--target1-abs,--no-undefined \
3128                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3129                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3130         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3131                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3132                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3133         ;;
3134     osf1)
3135         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3136         AVSERVERLDFLAGS=
3137         ;;
3138     minix)
3139         ;;
3140     plan9)
3141         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3142                      -D_REENTRANT_SOURCE        \
3143                      -D_RESEARCH_SOURCE         \
3144                      -DFD_SETSIZE=96            \
3145                      -DHAVE_SOCK_OPTS
3146         add_compat strtod.o strtod=avpriv_strtod
3147         network_extralibs='-lbsd'
3148         exeobjs=compat/plan9/main.o
3149         disable avserver
3150         cp_f='cp'
3151         ;;
3152     none)
3153         ;;
3154     *)
3155         die "Unknown OS '$target_os'."
3156         ;;
3157 esac
3158
3159 # determine libc flavour
3160
3161 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3162 if check_cpp_condition features.h "defined __UCLIBC__"; then
3163     libc_type=uclibc
3164     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3165 elif check_cpp_condition features.h "defined __GLIBC__"; then
3166     libc_type=glibc
3167     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3168 # MinGW headers can be installed on Cygwin, so check for newlib first.
3169 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3170     libc_type=newlib
3171     add_cppflags -U__STRICT_ANSI__
3172 elif check_header _mingw.h; then
3173     libc_type=mingw
3174     check_cpp_condition _mingw.h \
3175         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3176             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3177         die "ERROR: MinGW runtime version must be >= 3.15."
3178     add_cppflags -U__STRICT_ANSI__
3179 elif check_func_headers stdlib.h _get_doserrno; then
3180     libc_type=msvcrt
3181     add_compat strtod.o strtod=avpriv_strtod
3182     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3183                                  _snprintf=avpriv_snprintf  \
3184                                  vsnprintf=avpriv_vsnprintf
3185 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3186     libc_type=klibc
3187 fi
3188
3189 test -n "$libc_type" && enable $libc_type
3190
3191 # hacks for compiler/libc/os combinations
3192
3193 if enabled_all tms470 glibc; then
3194     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3195     add_cppflags -D__USER_LABEL_PREFIX__=
3196     add_cppflags -D__builtin_memset=memset
3197     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3198     add_cflags   -pds=48    # incompatible redefinition of macro
3199 fi
3200
3201 if enabled_all ccc glibc; then
3202     add_ldflags -Wl,-z,now  # calls to libots crash without this
3203 fi
3204
3205 esc(){
3206     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3207 }
3208
3209 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3210
3211 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3212
3213 set_default $PATHS_LIST
3214 set_default nm
3215
3216 # we need to build at least one lib type
3217 if ! enabled_any static shared; then
3218     cat <<EOF
3219 At least one library type must be built.
3220 Specify --enable-static to build the static libraries or --enable-shared to
3221 build the shared libraries as well. To only build the shared libraries specify
3222 --disable-static in addition to --enable-shared.
3223 EOF
3224     exit 1;
3225 fi
3226
3227 die_license_disabled() {
3228     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3229 }
3230
3231 die_license_disabled gpl libcdio
3232 die_license_disabled gpl libx264
3233 die_license_disabled gpl libxavs
3234 die_license_disabled gpl libxvid
3235 die_license_disabled gpl x11grab
3236
3237 die_license_disabled nonfree libfaac
3238 die_license_disabled nonfree libfdk_aac
3239 die_license_disabled nonfree openssl
3240
3241 die_license_disabled version3 libopencore_amrnb
3242 die_license_disabled version3 libopencore_amrwb
3243 die_license_disabled version3 libvo_aacenc
3244 die_license_disabled version3 libvo_amrwbenc
3245
3246 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3247
3248 disabled optimizations || check_cflags -fomit-frame-pointer
3249
3250 enable_pic() {
3251     enable pic
3252     add_cppflags -DPIC
3253     add_cflags   -fPIC
3254     add_asflags  -fPIC
3255 }
3256
3257 enabled pic && enable_pic
3258
3259 check_cc <<EOF || die "Symbol mangling check failed."
3260 int ff_extern;
3261 EOF
3262 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3263 extern_prefix=${sym%%ff_extern*}
3264
3265 check_cc <<EOF && enable_weak inline_asm
3266 void foo(void) { __asm__ volatile ("" ::); }
3267 EOF
3268
3269 _restrict=
3270 for restrict_keyword in restrict __restrict__ __restrict; do
3271     check_cc <<EOF && _restrict=$restrict_keyword && break
3272 void foo(char * $restrict_keyword p);
3273 EOF
3274 done
3275
3276 check_cc <<EOF && enable attribute_packed
3277 struct { int x; } __attribute__((packed)) x;
3278 EOF
3279
3280 check_cc <<EOF && enable attribute_may_alias
3281 union { int x; } __attribute__((may_alias)) x;
3282 EOF
3283
3284 check_cc <<EOF || die "endian test failed"
3285 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3286 EOF
3287 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3288
3289 if enabled alpha; then
3290
3291     check_cflags -mieee
3292
3293 elif enabled arm; then
3294
3295     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3296     enabled thumb && check_cflags -mthumb || check_cflags -marm
3297     nogas=die
3298
3299     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3300         enable vfp_args
3301     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3302         case "${cross_prefix:-$cc}" in
3303             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3304             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3305 __asm__ (".eabi_attribute 28, 1");
3306 int main(void) { return 0; }
3307 EOF
3308         esac
3309         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3310     fi
3311
3312     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3313     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3314     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3315     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3316     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3317     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3318
3319     [ $target_os = linux ] ||
3320         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3321             $ARCH_EXT_LIST_ARM
3322
3323     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3324     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3325
3326     enabled_all armv6t2 shared !pic && enable_pic
3327
3328 elif enabled mips; then
3329
3330     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3331
3332 elif enabled parisc; then
3333
3334     if enabled gcc; then
3335         case $($cc -dumpversion) in
3336             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3337         esac
3338     fi
3339
3340 elif enabled ppc; then
3341
3342     enable local_aligned_8 local_aligned_16
3343
3344     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3345     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3346     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3347     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3348
3349     # AltiVec flags: The FSF version of GCC differs from the Apple version
3350     if enabled altivec; then
3351         nogas=warn
3352         check_cflags -maltivec -mabi=altivec &&
3353         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3354         check_cflags -faltivec
3355
3356         # check if our compiler supports Motorola AltiVec C API
3357         check_cc <<EOF || disable altivec
3358 $inc_altivec_h
3359 int main(void) {
3360     vector signed int v1 = (vector signed int) { 0 };
3361     vector signed int v2 = (vector signed int) { 1 };
3362     v1 = vec_add(v1, v2);
3363     return 0;
3364 }
3365 EOF
3366
3367         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3368     fi
3369
3370 elif enabled sparc; then
3371
3372     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3373
3374 elif enabled x86; then
3375
3376     check_builtin rdtsc    intrin.h   "__rdtsc()"
3377     check_builtin mm_empty mmintrin.h "_mm_empty()"
3378
3379     enable local_aligned_8 local_aligned_16
3380
3381     # check whether EBP is available on x86
3382     # As 'i' is stored on the stack, this program will crash
3383     # if the base pointer is used to access it because the
3384     # base pointer is cleared in the inline assembly code.
3385     check_exec_crash <<EOF && enable ebp_available
3386 volatile int i=0;
3387 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3388 return i;
3389 EOF
3390
3391     # check whether EBX is available on x86
3392     check_inline_asm ebx_available '""::"b"(0)' &&
3393         check_inline_asm ebx_available '"":::"%ebx"'
3394
3395     # check whether xmm clobbers are supported
3396     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3397
3398     # check whether binutils is new enough to compile SSSE3/MMXEXT
3399     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3400     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3401
3402     if ! disabled_any asm mmx yasm; then
3403         if check_cmd $yasmexe --version; then
3404             enabled x86_64 && yasm_extra="-m amd64"
3405             yasm_debug="-g dwarf2"
3406         elif check_cmd nasm -v; then
3407             yasmexe=nasm
3408             yasm_debug="-g -F dwarf"
3409             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3410         fi
3411
3412         YASMFLAGS="-f $objformat $yasm_extra"
3413         enabled pic               && append YASMFLAGS "-DPIC"
3414         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3415         case "$objformat" in
3416             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3417         esac
3418
3419         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3420             die "yasm not found, use --disable-yasm for a crippled build"
3421         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3422         check_yasm "CPU amdnop" && enable cpunop
3423     fi
3424
3425     case "$cpu" in
3426         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3427             disable fast_clz
3428         ;;
3429     esac
3430
3431 fi
3432
3433 if enabled asm; then
3434     as=${gas:=$as}
3435     check_as <<EOF && enable gnu_as || \
3436         $nogas "GNU assembler not found, install gas-preprocessor"
3437 .macro m n
3438 \n: .int 0
3439 .endm
3440 m x
3441 EOF
3442 fi
3443
3444 check_ldflags -Wl,--as-needed
3445
3446 if check_func dlopen; then
3447     ldl=
3448 elif check_func dlopen -ldl; then
3449     ldl=-ldl
3450 fi
3451
3452 if ! disabled network; then
3453     check_type "sys/types.h sys/socket.h" socklen_t
3454     check_type netdb.h "struct addrinfo"
3455     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3456     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3457     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3458     check_type netinet/in.h "struct sockaddr_in6"
3459     check_type poll.h "struct pollfd"
3460     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3461     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3462     check_type netinet/sctp.h "struct sctp_event_subscribe"
3463     check_func getaddrinfo $network_extralibs
3464     check_func getservbyport $network_extralibs
3465     # Prefer arpa/inet.h over winsock2
3466     if check_header arpa/inet.h ; then
3467         check_func closesocket
3468     elif check_header winsock2.h ; then
3469         check_func_headers winsock2.h closesocket -lws2 &&
3470             network_extralibs="-lws2" ||
3471         { check_func_headers winsock2.h closesocket -lws2_32 &&
3472             network_extralibs="-lws2_32"; }
3473         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3474         check_type ws2tcpip.h socklen_t
3475         check_type ws2tcpip.h "struct addrinfo"
3476         check_type ws2tcpip.h "struct group_source_req"
3477         check_type ws2tcpip.h "struct ip_mreq_source"
3478         check_type ws2tcpip.h "struct ipv6_mreq"
3479         check_type winsock2.h "struct pollfd"
3480         check_type ws2tcpip.h "struct sockaddr_in6"
3481         check_type ws2tcpip.h "struct sockaddr_storage"
3482         check_struct winsock2.h "struct sockaddr" sa_len
3483     else
3484         disable network
3485     fi
3486 fi
3487
3488 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3489 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3490
3491 check_func  fcntl
3492 check_func  fork
3493 check_func  gethrtime
3494 check_func  getopt
3495 check_func  getrusage
3496 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3497 check_func  gettimeofday
3498 check_func  inet_aton $network_extralibs
3499 check_func  isatty
3500 check_func  localtime_r
3501 check_func  ${malloc_prefix}memalign            && enable memalign
3502 check_func  mkstemp
3503 check_func  mmap
3504 check_func  mprotect
3505 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3506 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3507 check_func  setrlimit
3508 check_func  strerror_r
3509 check_func  strptime
3510 check_func  strtok_r
3511 check_func  sched_getaffinity
3512 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3513 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3514 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3515 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3516 check_func  sysconf
3517 check_func  sysctl
3518 check_func  usleep
3519 check_func_headers io.h setmode
3520 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3521 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3522 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3523 check_func_headers windows.h GetProcessAffinityMask
3524 check_func_headers windows.h GetProcessTimes
3525 check_func_headers windows.h GetSystemTimeAsFileTime
3526 check_func_headers windows.h MapViewOfFile
3527 check_func_headers windows.h SetConsoleTextAttribute
3528 check_func_headers windows.h Sleep
3529 check_func_headers windows.h VirtualAlloc
3530
3531 check_header direct.h
3532 check_header dlfcn.h
3533 check_header dxva.h
3534 check_header dxva2api.h
3535 check_header io.h
3536 check_header malloc.h
3537 check_header poll.h
3538 check_header sys/mman.h
3539 check_header sys/param.h
3540 check_header sys/resource.h
3541 check_header sys/select.h
3542 check_header sys/time.h
3543 check_header unistd.h
3544 check_header vdpau/vdpau.h
3545 check_header vdpau/vdpau_x11.h
3546 check_header VideoDecodeAcceleration/VDADecoder.h
3547 check_header windows.h
3548 check_header X11/extensions/XvMClib.h
3549
3550 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3551 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3552
3553 if ! disabled w32threads && ! enabled pthreads; then
3554     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3555 fi
3556
3557 # check for some common methods of building with pthread support
3558 # do this before the optional library checks as some of them require pthreads
3559 if ! disabled pthreads && ! enabled w32threads; then
3560     enable pthreads
3561     if check_func pthread_create; then
3562         :
3563     elif check_func pthread_create -pthread; then
3564         add_cflags -pthread
3565         add_extralibs -pthread
3566     elif check_func pthread_create -pthreads; then
3567         add_cflags -pthreads
3568         add_extralibs -pthreads
3569     elif check_func pthread_create -lpthreadGC2; then
3570         add_extralibs -lpthreadGC2
3571     elif ! check_lib pthread.h pthread_create -lpthread; then
3572         disable pthreads
3573     fi
3574 fi
3575
3576 for thread in $THREADS_LIST; do
3577     if enabled $thread; then
3578         test -n "$thread_type" &&
3579             die "ERROR: Only one thread type must be selected." ||
3580             thread_type="$thread"
3581     fi
3582 done
3583
3584 enabled sync_val_compare_and_swap && enable atomics_gcc
3585 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3586 enabled MemoryBarrier && enable atomics_win32
3587
3588 check_lib math.h sin -lm && LIBM="-lm"
3589 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3590
3591 atan2f_args=2
3592 ldexpf_args=2
3593 powf_args=2
3594
3595 for func in $MATH_FUNCS; do
3596     eval check_mathfunc $func \${${func}_args:-1}
3597 done
3598
3599 # these are off by default, so fail if requested and not available
3600 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3601 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3602 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3603 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3604 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3605 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3606 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3607                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3608                         done || die "ERROR: libgsm not found"; }
3609 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3610 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3611 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3612 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3613 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3614 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3615 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3616 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3617 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3618 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3619 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3620 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3621 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3622 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3623 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3624 enabled libvpx     && {
3625     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3626                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3627     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3628                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3629     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3630     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3631 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3632                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3633                         die "ERROR: libx264 version must be >= 0.118."; }
3634 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3635 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3636 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3637                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3638                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3639                         die "ERROR: openssl not found"; }
3640
3641 if enabled gnutls; then
3642     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3643     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3644 fi
3645
3646 # libdc1394 check
3647 if enabled libdc1394; then
3648     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3649         enable libdc1394_2; } ||
3650     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3651         enable libdc1394_1; } ||
3652     die "ERROR: No version of libdc1394 found "
3653 fi
3654
3655 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3656     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3657     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3658     enable sdl
3659 fi
3660
3661 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3662
3663 check_header linux/fb.h
3664 check_header linux/videodev2.h
3665 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3666
3667 check_header sys/videoio.h
3668
3669 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3670 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3671 # w32api 3.12 had it defined wrong
3672 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3673
3674 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3675 { check_header dev/bktr/ioctl_meteor.h &&
3676   check_header dev/bktr/ioctl_bt848.h; } ||
3677 { check_header machine/ioctl_meteor.h &&
3678   check_header machine/ioctl_bt848.h; } ||
3679 { check_header dev/video/meteor/ioctl_meteor.h &&
3680   check_header dev/video/bktr/ioctl_bt848.h; } ||
3681 check_header dev/ic/bt8xx.h
3682
3683 check_header sndio.h
3684 check_header sys/soundcard.h
3685 check_header soundcard.h
3686
3687 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3688
3689 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3690     check_func jack_port_get_latency_range -ljack
3691
3692 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3693
3694 if enabled libcdio; then
3695     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
3696 fi
3697
3698 enabled x11grab                                           &&
3699 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3700 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3701 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3702
3703 enabled vdpau &&
3704     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3705     disable vdpau
3706
3707 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3708
3709 # add some useful compiler flags if supported
3710 check_cflags -Wdeclaration-after-statement
3711 check_cflags -Wall
3712 check_cflags -Wno-parentheses
3713 check_cflags -Wno-switch
3714 check_cflags -Wno-format-zero-length
3715 check_cflags -Wdisabled-optimization
3716 check_cflags -Wpointer-arith
3717 check_cflags -Wredundant-decls
3718 check_cflags -Wno-pointer-sign
3719 check_cflags -Wcast-qual
3720 check_cflags -Wwrite-strings
3721 check_cflags -Wtype-limits
3722 check_cflags -Wundef
3723 check_cflags -Wmissing-prototypes
3724 check_cflags -Wstrict-prototypes
3725 enabled extra_warnings && check_cflags -Winline
3726
3727 # add some linker flags
3728 check_ldflags -Wl,--warn-common
3729 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3730 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3731
3732 enabled xmm_clobber_test &&
3733     check_ldflags -Wl,--wrap,avcodec_open2              \
3734                   -Wl,--wrap,avcodec_decode_audio4      \
3735                   -Wl,--wrap,avcodec_decode_video2      \
3736                   -Wl,--wrap,avcodec_decode_subtitle2   \
3737                   -Wl,--wrap,avcodec_encode_audio2      \
3738                   -Wl,--wrap,avcodec_encode_video       \
3739                   -Wl,--wrap,avcodec_encode_subtitle    \
3740                   -Wl,--wrap,sws_scale ||
3741     disable xmm_clobber_test
3742
3743 echo "X{};" > $TMPV
3744 if test_ldflags -Wl,--version-script,$TMPV; then
3745     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3746     check_cc <<EOF && enable symver_asm_label
3747 void ff_foo(void) __asm__ ("av_foo@VERSION");
3748 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3749 EOF
3750     check_cc <<EOF && enable symver_gnu_asm
3751 __asm__(".symver ff_foo,av_foo@VERSION");
3752 void ff_foo(void) {}
3753 EOF
3754 fi
3755
3756 if [ -z "$optflags" ]; then
3757     if enabled small; then
3758         optflags=$cflags_size
3759     elif enabled optimizations; then
3760         optflags=$cflags_speed
3761     else
3762         optflags=$cflags_noopt
3763     fi
3764 fi
3765
3766 check_optflags(){
3767     check_cflags "$@"
3768     enabled lto && check_ldflags "$@"
3769 }
3770
3771
3772 if enabled lto; then
3773     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3774     check_cflags  -flto
3775     check_ldflags -flto $cpuflags
3776 fi
3777
3778 check_optflags $optflags
3779 check_optflags -fno-math-errno
3780 check_optflags -fno-signed-zeros
3781
3782 if enabled icc; then
3783     # Just warnings, no remarks
3784     check_cflags -w1
3785     # -wd: Disable following warnings
3786     # 144, 167, 556: -Wno-pointer-sign
3787     # 1292: attribute "foo" ignored
3788     # 1419: external declaration in primary source file
3789     # 10006: ignoring unknown option -fno-signed-zeros
3790     # 10148: ignoring unknown option -Wno-parentheses
3791     # 10156: ignoring option '-W'; no argument required
3792     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3793     # 11030: Warning unknown option --as-needed
3794     # 10156: ignoring option '-export'; no argument required
3795     check_ldflags -wd10156,11030
3796     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3797     enable ebp_available
3798     if enabled x86_32; then
3799         icc_version=$($cc -dumpversion)
3800         test ${icc_version%%.*} -ge 11 &&
3801             check_cflags -falign-stack=maintain-16-byte ||
3802             disable aligned_stack
3803     fi
3804 elif enabled ccc; then
3805     # disable some annoying warnings
3806     add_cflags -msg_disable bitnotint
3807     add_cflags -msg_disable mixfuncvoid
3808     add_cflags -msg_disable nonstandcast
3809     add_cflags -msg_disable unsupieee
3810 elif enabled gcc; then
3811     check_optflags -fno-tree-vectorize
3812     check_cflags -Werror=implicit-function-declaration
3813     check_cflags -Werror=missing-prototypes
3814     check_cflags -Werror=return-type
3815     check_cflags -Werror=declaration-after-statement
3816     check_cflags -Werror=vla
3817 elif enabled llvm_gcc; then
3818     check_cflags -mllvm -stack-alignment=16
3819 elif enabled clang; then
3820     check_cflags -mllvm -stack-alignment=16
3821     check_cflags -Qunused-arguments
3822     check_cflags -Werror=implicit-function-declaration
3823     check_cflags -Werror=missing-prototypes
3824     check_cflags -Werror=return-type
3825 elif enabled armcc; then
3826     # 2523: use of inline assembler is deprecated
3827     add_cflags -W${armcc_opt},--diag_suppress=2523
3828     add_cflags -W${armcc_opt},--diag_suppress=1207
3829     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3830     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3831     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3832     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3833 elif enabled tms470; then
3834     add_cflags -pds=824 -pds=837
3835 elif enabled pathscale; then
3836     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3837 elif enabled msvc; then
3838     enabled x86_32 && disable aligned_stack
3839 fi
3840
3841 case $target_os in
3842     osf1)
3843         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3844     ;;
3845     plan9)
3846         add_cppflags -Dmain=plan9_main
3847     ;;
3848 esac
3849
3850 enabled_any $THREADS_LIST      && enable threads
3851 enabled_any $ATOMICS_LIST      && enable atomics_native
3852
3853 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3854
3855 check_deps $CONFIG_LIST       \
3856            $CONFIG_EXTRA      \
3857            $HAVE_LIST         \
3858            $ALL_COMPONENTS    \
3859
3860 ! enabled_any memalign posix_memalign aligned_malloc &&
3861     enabled_any $need_memalign && enable memalign_hack
3862
3863 echo "install prefix            $prefix"
3864 echo "source path               $source_path"
3865 echo "C compiler                $cc"
3866 echo "ARCH                      $arch ($cpu)"
3867 if test "$build_suffix" != ""; then
3868     echo "build suffix              $build_suffix"
3869 fi
3870 if test "$extra_version" != ""; then
3871     echo "version string suffix     $extra_version"
3872 fi
3873 echo "big-endian                ${bigendian-no}"
3874 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3875 if enabled x86; then
3876     echo "${yasmexe}                      ${yasm-no}"
3877     echo "MMX enabled               ${mmx-no}"
3878     echo "MMXEXT enabled            ${mmxext-no}"
3879     echo "3DNow! enabled            ${amd3dnow-no}"
3880     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3881     echo "SSE enabled               ${sse-no}"
3882     echo "SSSE3 enabled             ${ssse3-no}"
3883     echo "AVX enabled               ${avx-no}"
3884     echo "FMA4 enabled              ${fma4-no}"
3885     echo "CMOV enabled              ${cmov-no}"
3886     echo "CMOV is fast              ${fast_cmov-no}"
3887     echo "EBX available             ${ebx_available-no}"
3888     echo "EBP available             ${ebp_available-no}"
3889 fi
3890 if enabled arm; then
3891     echo "ARMv5TE enabled           ${armv5te-no}"
3892     echo "ARMv6 enabled             ${armv6-no}"
3893     echo "ARMv6T2 enabled           ${armv6t2-no}"
3894     echo "VFP enabled               ${vfp-no}"
3895     echo "NEON enabled              ${neon-no}"
3896 fi
3897 if enabled ppc; then
3898     echo "AltiVec enabled           ${altivec-no}"
3899     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3900     echo "dcbzl available           ${dcbzl-no}"
3901 fi
3902 if enabled sparc; then
3903     echo "VIS enabled               ${vis-no}"
3904 fi
3905 echo "debug symbols             ${debug-no}"
3906 echo "optimize for size         ${small-no}"
3907 echo "optimizations             ${optimizations-no}"
3908 echo "static                    ${static-no}"
3909 echo "shared                    ${shared-no}"
3910 echo "new filter support        ${avfilter-no}"
3911 echo "network support           ${network-no}"
3912 echo "threading support         ${thread_type-no}"
3913 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3914 echo "SDL support               ${sdl-no}"
3915 test -n "$random_seed" &&
3916     echo "random seed               ${random_seed}"
3917 echo
3918
3919 echo "External libraries:"
3920 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3921 echo
3922
3923 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3924     echo "Enabled ${type}s:"
3925     eval list=\$$(toupper $type)_LIST
3926     print_enabled '_*' $list | print_3_columns
3927     echo
3928 done
3929
3930 license="LGPL version 2.1 or later"
3931 if enabled nonfree; then
3932     license="nonfree and unredistributable"
3933 elif enabled gplv3; then
3934     license="GPL version 3 or later"
3935 elif enabled lgplv3; then
3936     license="LGPL version 3 or later"
3937 elif enabled gpl; then
3938     license="GPL version 2 or later"
3939 fi
3940
3941 echo "License: $license"
3942
3943 echo "Creating config.mak and config.h..."
3944
3945 test -e Makefile || $ln_s "$source_path/Makefile" .
3946
3947 config_files="$TMPH config.mak"
3948
3949 cat > config.mak <<EOF
3950 # Automatically generated by configure - do not modify!
3951 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3952 prefix=$prefix
3953 LIBDIR=\$(DESTDIR)$libdir
3954 SHLIBDIR=\$(DESTDIR)$shlibdir
3955 INCDIR=\$(DESTDIR)$incdir
3956 BINDIR=\$(DESTDIR)$bindir
3957 DATADIR=\$(DESTDIR)$datadir
3958 MANDIR=\$(DESTDIR)$mandir
3959 SRC_PATH=$source_path
3960 CC_IDENT=$cc_ident
3961 ARCH=$arch
3962 CC=$cc
3963 AS=$as
3964 LD=$ld
3965 DEPCC=$dep_cc
3966 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3967 DEPAS=$as
3968 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3969 YASM=$yasmexe
3970 DEPYASM=$yasmexe
3971 AR=$ar
3972 ARFLAGS=$arflags
3973 AR_O=$ar_o
3974 RANLIB=$ranlib
3975 LN_S=$ln_s
3976 CPPFLAGS=$CPPFLAGS
3977 CFLAGS=$CFLAGS
3978 ASFLAGS=$ASFLAGS
3979 AS_C=$AS_C
3980 AS_O=$AS_O
3981 CC_C=$CC_C
3982 CC_E=$CC_E
3983 CC_O=$CC_O
3984 LD_O=$LD_O
3985 LD_LIB=$LD_LIB
3986 LD_PATH=$LD_PATH
3987 DLLTOOL=$dlltool
3988 LDFLAGS=$LDFLAGS
3989 LDFLAGS-avserver=$AVSERVERLDFLAGS
3990 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3991 YASMFLAGS=$YASMFLAGS
3992 BUILDSUF=$build_suffix
3993 FULLNAME=$FULLNAME
3994 LIBPREF=$LIBPREF
3995 LIBSUF=$LIBSUF
3996 LIBNAME=$LIBNAME
3997 SLIBPREF=$SLIBPREF
3998 SLIBSUF=$SLIBSUF
3999 EXESUF=$EXESUF
4000 EXTRA_VERSION=$extra_version
4001 CCDEP=$CCDEP
4002 CCDEP_FLAGS=$CCDEP_FLAGS
4003 ASDEP=$ASDEP
4004 ASDEP_FLAGS=$ASDEP_FLAGS
4005 CC_DEPFLAGS=$CC_DEPFLAGS
4006 AS_DEPFLAGS=$AS_DEPFLAGS
4007 HOSTCC=$host_cc
4008 HOSTLD=$host_ld
4009 HOSTCFLAGS=$host_cflags
4010 HOSTCPPFLAGS=$host_cppflags
4011 HOSTEXESUF=$HOSTEXESUF
4012 HOSTLDFLAGS=$host_ldflags
4013 HOSTLIBS=$host_libs
4014 DEPHOSTCC=$host_cc
4015 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4016 HOSTCCDEP=$HOSTCCDEP
4017 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4018 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4019 HOSTCC_C=$HOSTCC_C
4020 HOSTCC_O=$HOSTCC_O
4021 HOSTLD_O=$HOSTLD_O
4022 TARGET_EXEC=$target_exec
4023 TARGET_PATH=$target_path
4024 LIBS-avplay=$sdl_libs
4025 CFLAGS-avplay=$sdl_cflags
4026 ZLIB=$($ldflags_filter -lz)
4027 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4028 EXTRALIBS=$extralibs
4029 COMPAT_OBJS=$compat_objs
4030 EXEOBJS=$exeobjs
4031 INSTALL=install
4032 LIBTARGET=${LIBTARGET}
4033 SLIBNAME=${SLIBNAME}
4034 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4035 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4036 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4037 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4038 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4039 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4040 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4041 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4042 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4043 EOF
4044
4045 get_version(){
4046     lcname=lib${1}
4047     name=$(toupper $lcname)
4048     file=$source_path/$lcname/version.h
4049     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4050     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4051     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4052     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4053     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4054 }
4055
4056 map 'get_version $v' $LIBRARY_LIST
4057
4058 cat > $TMPH <<EOF
4059 /* Automatically generated by configure - do not modify! */
4060 #ifndef LIBAV_CONFIG_H
4061 #define LIBAV_CONFIG_H
4062 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4063 #define LIBAV_LICENSE "$(c_escape $license)"
4064 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4065 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4066 #define restrict $_restrict
4067 #define EXTERN_PREFIX "${extern_prefix}"
4068 #define EXTERN_ASM ${extern_prefix}
4069 #define SLIBSUF "$SLIBSUF"
4070 EOF
4071
4072 test -n "$malloc_prefix" &&
4073     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4074
4075 if enabled yasm; then
4076     append config_files $TMPASM
4077     printf '' >$TMPASM
4078 fi
4079
4080 print_config ARCH_   "$config_files" $ARCH_LIST
4081 print_config HAVE_   "$config_files" $HAVE_LIST
4082 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4083                                      $CONFIG_EXTRA      \
4084                                      $ALL_COMPONENTS    \
4085
4086 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4087
4088 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4089 cp_if_changed $TMPH config.h
4090 touch .config
4091
4092 enabled yasm && cp_if_changed $TMPASM config.asm
4093
4094 cat > $TMPH <<EOF
4095 /* Generated by ffconf */
4096 #ifndef AVUTIL_AVCONFIG_H
4097 #define AVUTIL_AVCONFIG_H
4098 EOF
4099
4100 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4101
4102 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4103
4104 cp_if_changed $TMPH libavutil/avconfig.h
4105
4106 test -n "$WARNINGS" && printf "\n$WARNINGS"
4107
4108 # build pkg-config files
4109
4110 pkgconfig_generate(){
4111     name=$1
4112     shortname=${name#lib}${build_suffix}
4113     comment=$2
4114     version=$3
4115     libs=$4
4116     requires=$5
4117     enabled ${name#lib} || return 0
4118     mkdir -p $name
4119     cat <<EOF > $name/$name.pc
4120 prefix=$prefix
4121 exec_prefix=\${prefix}
4122 libdir=$libdir
4123 includedir=$incdir
4124
4125 Name: $name
4126 Description: $comment
4127 Version: $version
4128 Requires: $(enabled shared || echo $requires)
4129 Requires.private: $(enabled shared && echo $requires)
4130 Conflicts:
4131 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4132 Libs.private: $(enabled shared && echo $libs)
4133 Cflags: -I\${includedir}
4134 EOF
4135     cat <<EOF > $name/$name-uninstalled.pc
4136 prefix=
4137 exec_prefix=
4138 libdir=\${pcfiledir}
4139 includedir=${source_path}
4140
4141 Name: $name
4142 Description: $comment
4143 Version: $version
4144 Requires: $requires
4145 Conflicts:
4146 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4147 Cflags: -I\${includedir}
4148 EOF
4149 }
4150
4151 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4152 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4153 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4154 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4155 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4156 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4157 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"