lavfi: always enable the scale filter and depend on sws.
[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 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Help options:
63   --help                   print this message
64   --list-decoders          show all available decoders
65   --list-encoders          show all available encoders
66   --list-hwaccels          show all available hardware accelerators
67   --list-demuxers          show all available demuxers
68   --list-muxers            show all available muxers
69   --list-parsers           show all available parsers
70   --list-protocols         show all available protocols
71   --list-bsfs              show all available bitstream filters
72   --list-indevs            show all available input devices
73   --list-outdevs           show all available output devices
74   --list-filters           show all available filters
75
76 Standard options:
77   --logfile=FILE           log tests and output to FILE [config.log]
78   --disable-logging        do not log configure debug information
79   --prefix=PREFIX          install in PREFIX [$prefix]
80   --bindir=DIR             install binaries in DIR [PREFIX/bin]
81   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
82   --libdir=DIR             install libs in DIR [PREFIX/lib]
83   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
84   --incdir=DIR             install includes in DIR [PREFIX/include]
85   --mandir=DIR             install man page in DIR [PREFIX/share/man]
86
87 Licensing options:
88   --enable-gpl             allow use of GPL code, the resulting libs
89                            and binaries will be under GPL [no]
90   --enable-version3        upgrade (L)GPL to version 3 [no]
91   --enable-nonfree         allow use of nonfree code, the resulting libs
92                            and binaries will be unredistributable [no]
93
94 Configuration options:
95   --disable-static         do not build static libraries [no]
96   --enable-shared          build shared libraries [no]
97   --enable-small           optimize for size instead of speed
98   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
99   --enable-gray            enable full grayscale support (slower color)
100   --disable-swscale-alpha  disable alpha channel support in swscale
101
102 Component options:
103   --disable-doc            do not build documentation
104   --disable-avconv         disable avconv build
105   --disable-avplay         disable avplay build
106   --disable-avprobe        disable avprobe build
107   --disable-avserver       disable avserver build
108   --disable-avdevice       disable libavdevice build
109   --disable-avcodec        disable libavcodec build
110   --disable-avformat       disable libavformat build
111   --disable-swscale        disable libswscale build
112   --disable-avfilter       disable video filter support [no]
113   --disable-avresample     disable libavresample build [no]
114   --disable-pthreads       disable pthreads [auto]
115   --disable-w32threads     disable Win32 threads [auto]
116   --enable-x11grab         enable X11 grabbing [no]
117   --disable-network        disable network support [no]
118   --disable-dct            disable DCT code
119   --disable-mdct           disable MDCT code
120   --disable-rdft           disable RDFT code
121   --disable-fft            disable FFT code
122   --enable-dxva2           enable DXVA2 code
123   --enable-vaapi           enable VAAPI code
124   --enable-vda             enable VDA code
125   --enable-vdpau           enable VDPAU code
126
127 Individual component options:
128   --disable-everything     disable all components listed below
129   --disable-encoder=NAME   disable encoder NAME
130   --enable-encoder=NAME    enable encoder NAME
131   --disable-encoders       disable all encoders
132   --disable-decoder=NAME   disable decoder NAME
133   --enable-decoder=NAME    enable decoder NAME
134   --disable-decoders       disable all decoders
135   --disable-hwaccel=NAME   disable hwaccel NAME
136   --enable-hwaccel=NAME    enable hwaccel NAME
137   --disable-hwaccels       disable all hwaccels
138   --disable-muxer=NAME     disable muxer NAME
139   --enable-muxer=NAME      enable muxer NAME
140   --disable-muxers         disable all muxers
141   --disable-demuxer=NAME   disable demuxer NAME
142   --enable-demuxer=NAME    enable demuxer NAME
143   --disable-demuxers       disable all demuxers
144   --enable-parser=NAME     enable parser NAME
145   --disable-parser=NAME    disable parser NAME
146   --disable-parsers        disable all parsers
147   --enable-bsf=NAME        enable bitstream filter NAME
148   --disable-bsf=NAME       disable bitstream filter NAME
149   --disable-bsfs           disable all bitstream filters
150   --enable-protocol=NAME   enable protocol NAME
151   --disable-protocol=NAME  disable protocol NAME
152   --disable-protocols      disable all protocols
153   --enable-indev=NAME      enable input device NAME
154   --disable-indev=NAME     disable input device NAME
155   --disable-indevs         disable input devices
156   --enable-outdev=NAME     enable output device NAME
157   --disable-outdev=NAME    disable output device NAME
158   --disable-outdevs        disable output devices
159   --disable-devices        disable all devices
160   --enable-filter=NAME     enable filter NAME
161   --disable-filter=NAME    disable filter NAME
162   --disable-filters        disable all filters
163
164 External library support:
165   --enable-avisynth        enable reading of AVISynth script files [no]
166   --enable-bzlib           enable bzlib [autodetect]
167   --enable-frei0r          enable frei0r video filtering
168   --enable-gnutls          enable gnutls [no]
169   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
170   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
171   --enable-libopencv       enable video filtering via libopencv [no]
172   --enable-libcdio         enable audio CD grabbing with libcdio
173   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
174                            and libraw1394 [no]
175   --enable-libfaac         enable FAAC support via libfaac [no]
176   --enable-libfreetype     enable libfreetype [no]
177   --enable-libgsm          enable GSM support via libgsm [no]
178   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
179   --enable-libnut          enable NUT (de)muxing via libnut,
180                            native (de)muxer exists [no]
181   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
182   --enable-libpulse        enable Pulseaudio input via libpulse [no]
183   --enable-librtmp         enable RTMP[E] support via librtmp [no]
184   --enable-libschroedinger enable Dirac support via libschroedinger [no]
185   --enable-libspeex        enable Speex support via libspeex [no]
186   --enable-libtheora       enable Theora encoding via libtheora [no]
187   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
188   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
189   --enable-libvorbis       enable Vorbis encoding via libvorbis,
190                            native implementation exists [no]
191   --enable-libvpx          enable VP8 support via libvpx [no]
192   --enable-libx264         enable H.264 encoding via x264 [no]
193   --enable-libxavs         enable AVS encoding via xavs [no]
194   --enable-libxvid         enable Xvid encoding via xvidcore,
195                            native MPEG-4/Xvid encoder exists [no]
196   --enable-openssl         enable openssl [no]
197   --enable-zlib            enable zlib [autodetect]
198
199 Advanced options (experts only):
200   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
201   --enable-cross-compile   assume a cross-compiler is used
202   --sysroot=PATH           root of cross-build tree
203   --sysinclude=PATH        location of cross-build system headers
204   --target-os=OS           compiler targets OS [$target_os]
205   --target-exec=CMD        command to run executables on target
206   --target-path=DIR        path to view of build directory on target
207   --nm=NM                  use nm tool
208   --ar=AR                  use archive tool AR [$ar_default]
209   --as=AS                  use assembler AS [$as_default]
210   --cc=CC                  use C compiler CC [$cc_default]
211   --ld=LD                  use linker LD
212   --host-cc=HOSTCC         use host C compiler HOSTCC
213   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
214   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
215   --host-libs=HLIBS        use libs HLIBS when linking for host
216   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
217   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
218   --extra-libs=ELIBS       add ELIBS [$ELIBS]
219   --extra-version=STRING   version string suffix []
220   --optflags               override optimization-related compiler flags
221   --build-suffix=SUFFIX    library name suffix []
222   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
223   --arch=ARCH              select architecture [$arch]
224   --cpu=CPU                select the minimum required CPU (affects
225                            instruction selection, may crash on older CPUs)
226   --enable-pic             build position-independent code
227   --enable-sram            allow use of on-chip SRAM
228   --disable-symver         disable symbol versioning
229   --disable-fastdiv        disable table-based division
230   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
231   --disable-safe-bitstream-reader
232                            disable buffer boundary checking in bitreaders
233                            (faster, but may crash)
234   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
235
236 Optimization options (experts only):
237   --disable-asm            disable all assembler optimizations
238   --disable-altivec        disable AltiVec optimizations
239   --disable-amd3dnow       disable 3DNow! optimizations
240   --disable-amd3dnowext    disable 3DNow! extended optimizations
241   --disable-mmx            disable MMX optimizations
242   --disable-mmx2           disable MMX2 optimizations
243   --disable-sse            disable SSE optimizations
244   --disable-ssse3          disable SSSE3 optimizations
245   --disable-avx            disable AVX optimizations
246   --disable-armv5te        disable armv5te optimizations
247   --disable-armv6          disable armv6 optimizations
248   --disable-armv6t2        disable armv6t2 optimizations
249   --disable-armvfp         disable ARM VFP optimizations
250   --disable-mmi            disable MMI optimizations
251   --disable-neon           disable NEON optimizations
252   --disable-vis            disable VIS optimizations
253   --disable-yasm           disable use of yasm assembler
254
255 Developer options (useful when working on Libav itself):
256   --disable-debug          disable debugging symbols
257   --enable-debug=LEVEL     set the debug level [$debuglevel]
258   --disable-optimizations  disable compiler optimizations
259   --enable-extra-warnings  enable more compiler warnings
260   --samples=PATH           location of test samples for FATE, if not set use
261                            \$FATE_SAMPLES at make invocation time.
262   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
263                            should be used only for debugging purposes)
264
265 NOTE: Object files are built at the place where configure is launched.
266 EOF
267   exit 0
268 }
269
270 quotes='""'
271
272 log(){
273     echo "$@" >> $logfile
274 }
275
276 log_file(){
277     log BEGIN $1
278     pr -n -t $1 >> $logfile
279     log END $1
280 }
281
282 echolog(){
283     log "$@"
284     echo "$@"
285 }
286
287 warn(){
288     log "WARNING: $*"
289     WARNINGS="${WARNINGS}WARNING: $*\n"
290 }
291
292 die(){
293     echolog "$@"
294     cat <<EOF
295
296 If you think configure made a mistake, make sure you are using the latest
297 version from Git.  If the latest version fails, report the problem to the
298 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
299 EOF
300     if disabled logging; then
301         cat <<EOF
302 Rerun configure with logging enabled (do not use --disable-logging), and
303 include the log this produces with your report.
304 EOF
305     else
306 cat <<EOF
307 Include the log file "$logfile" produced by configure as this will help
308 solving the problem.
309 EOF
310     fi
311     exit 1
312 }
313
314 # Avoid locale weirdness, besides we really just want to translate ASCII.
315 toupper(){
316     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
317 }
318
319 tolower(){
320     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
321 }
322
323 c_escape(){
324     echo "$*" | sed 's/["\\]/\\\0/g'
325 }
326
327 sh_quote(){
328     v=$(echo "$1" | sed "s/'/'\\\\''/g")
329     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
330     echo "$v"
331 }
332
333 cleanws(){
334     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
335 }
336
337 filter(){
338     pat=$1
339     shift
340     for v; do
341         eval "case $v in $pat) echo $v ;; esac"
342     done
343 }
344
345 filter_out(){
346     pat=$1
347     shift
348     for v; do
349         eval "case $v in $pat) ;; *) echo $v ;; esac"
350     done
351 }
352
353 map(){
354     m=$1
355     shift
356     for v; do eval $m; done
357 }
358
359 set_all(){
360     value=$1
361     shift
362     for var in $*; do
363         eval $var=$value
364     done
365 }
366
367 set_weak(){
368     value=$1
369     shift
370     for var; do
371         eval : \${$var:=$value}
372     done
373 }
374
375 set_safe(){
376     var=$1
377     shift
378     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
379 }
380
381 get_safe(){
382     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
383 }
384
385 pushvar(){
386     for var in $*; do
387         eval level=\${${var}_level:=0}
388         eval ${var}_${level}="\$$var"
389         eval ${var}_level=$(($level+1))
390     done
391 }
392
393 popvar(){
394     for var in $*; do
395         eval level=\${${var}_level:-0}
396         test $level = 0 && continue
397         eval level=$(($level-1))
398         eval $var="\${${var}_${level}}"
399         eval ${var}_level=$level
400         eval unset ${var}_${level}
401     done
402 }
403
404 enable(){
405     set_all yes $*
406 }
407
408 disable(){
409     set_all no $*
410 }
411
412 enable_weak(){
413     set_weak yes $*
414 }
415
416 disable_weak(){
417     set_weak no $*
418 }
419
420 enable_safe(){
421     for var; do
422         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
423     done
424 }
425
426 disable_safe(){
427     for var; do
428         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
429     done
430 }
431
432 do_enable_deep(){
433     for var; do
434         enabled $var && continue
435         eval sel="\$${var}_select"
436         eval sgs="\$${var}_suggest"
437         pushvar var sgs
438         enable_deep $sel
439         popvar sgs
440         enable_deep_weak $sgs
441         popvar var
442     done
443 }
444
445 enable_deep(){
446     do_enable_deep $*
447     enable $*
448 }
449
450 enable_deep_weak(){
451     do_enable_deep $*
452     enable_weak $*
453 }
454
455 enabled(){
456     test "${1#!}" = "$1" && op== || op=!=
457     eval test "x\$${1#!}" $op "xyes"
458 }
459
460 disabled(){
461     test "${1#!}" = "$1" && op== || op=!=
462     eval test "x\$${1#!}" $op "xno"
463 }
464
465 enabled_all(){
466     for opt; do
467         enabled $opt || return 1
468     done
469 }
470
471 disabled_all(){
472     for opt; do
473         disabled $opt || return 1
474     done
475 }
476
477 enabled_any(){
478     for opt; do
479         enabled $opt && return 0
480     done
481 }
482
483 disabled_any(){
484     for opt; do
485         disabled $opt && return 0
486     done
487     return 1
488 }
489
490 set_default(){
491     for opt; do
492         eval : \${$opt:=\$${opt}_default}
493     done
494 }
495
496 is_in(){
497     value=$1
498     shift
499     for var in $*; do
500         [ $var = $value ] && return 0
501     done
502     return 1
503 }
504
505 check_deps(){
506     for cfg; do
507         cfg="${cfg#!}"
508         enabled ${cfg}_checking && die "Circular dependency for $cfg."
509         disabled ${cfg}_checking && continue
510         enable ${cfg}_checking
511
512         eval dep_all="\$${cfg}_deps"
513         eval dep_any="\$${cfg}_deps_any"
514         eval dep_sel="\$${cfg}_select"
515         eval dep_sgs="\$${cfg}_suggest"
516         eval dep_ifa="\$${cfg}_if"
517         eval dep_ifn="\$${cfg}_if_any"
518
519         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
520         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
521         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
522
523         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
524         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
525         enabled_all  $dep_all || disable $cfg
526         enabled_any  $dep_any || disable $cfg
527         disabled_any $dep_sel && disable $cfg
528
529         if enabled $cfg; then
530             eval dep_extralibs="\$${cfg}_extralibs"
531             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
532             enable_deep $dep_sel
533             enable_deep_weak $dep_sgs
534         fi
535
536         disable ${cfg}_checking
537     done
538 }
539
540 print_config_h(){
541     enabled $1 && v=1 || v=0
542     echo "#define $2 $v"
543 }
544
545 print_config_mak(){
546     enabled $1 && v= || v=!
547     echo "$v$2=yes"
548 }
549
550 print_config_asm(){
551     enabled $1 && v=1 || v=0
552     echo "%define $2 $v"
553 }
554
555 print_config(){
556     pfx=$1
557     files=$2
558     shift 2
559     for cfg; do
560         ucname="$(toupper $cfg)"
561         for f in $files; do
562             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
563         done
564     done
565 }
566
567 print_enabled(){
568     test "$1" = -n && end=" " && shift || end="\n"
569     suf=$1
570     shift
571     for v; do
572         enabled $v && printf "%s$end" ${v%$suf};
573     done
574 }
575
576 append(){
577     var=$1
578     shift
579     eval "$var=\"\$$var $*\""
580 }
581
582 prepend(){
583     var=$1
584     shift
585     eval "$var=\"$* \$$var\""
586 }
587
588 add_cppflags(){
589     append CPPFLAGS $($filter_cppflags "$@")
590 }
591
592 add_cflags(){
593     append CFLAGS $($filter_cflags "$@")
594 }
595
596 add_asflags(){
597     append ASFLAGS $($filter_asflags "$@")
598 }
599
600 add_ldflags(){
601     append LDFLAGS "$@"
602 }
603
604 add_extralibs(){
605     prepend extralibs "$@"
606 }
607
608 check_cmd(){
609     log "$@"
610     "$@" >> $logfile 2>&1
611 }
612
613 check_cc(){
614     log check_cc "$@"
615     cat > $TMPC
616     log_file $TMPC
617     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
618 }
619
620 check_cpp(){
621     log check_cpp "$@"
622     cat > $TMPC
623     log_file $TMPC
624     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
625 }
626
627 check_as(){
628     log check_as "$@"
629     cat > $TMPC
630     log_file $TMPC
631     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
632 }
633
634 check_asm(){
635     log check_asm "$@"
636     name="$1"
637     code="$2"
638     shift 2
639     disable $name
640     check_as "$@" <<EOF && enable $name
641 void foo(void){ __asm__ volatile($code); }
642 EOF
643 }
644
645 check_yasm(){
646     log check_yasm "$@"
647     echo "$1" > $TMPS
648     log_file $TMPS
649     shift 1
650     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
651 }
652
653 check_ld(){
654     log check_ld "$@"
655     flags=''
656     libs=''
657     for f; do
658         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
659     done
660     check_cc $($filter_cflags $flags) || return
661     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
662 }
663
664 check_cppflags(){
665     log check_cppflags "$@"
666     set -- $($filter_cppflags "$@")
667     check_cc "$@" <<EOF && append CPPFLAGS "$@"
668 int x;
669 EOF
670 }
671
672 check_cflags(){
673     log check_cflags "$@"
674     set -- $($filter_cflags "$@")
675     check_cc "$@" <<EOF && append CFLAGS "$@"
676 int x;
677 EOF
678 }
679
680 test_ldflags(){
681     log test_ldflags "$@"
682     check_ld "$@" <<EOF
683 int main(void){ return 0; }
684 EOF
685 }
686
687 check_ldflags(){
688     log check_ldflags "$@"
689     test_ldflags "$@" && add_ldflags "$@"
690 }
691
692 check_header(){
693     log check_header "$@"
694     header=$1
695     shift
696     disable_safe $header
697     check_cpp "$@" <<EOF && enable_safe $header
698 #include <$header>
699 int x;
700 EOF
701 }
702
703 check_func(){
704     log check_func "$@"
705     func=$1
706     shift
707     disable $func
708     check_ld "$@" <<EOF && enable $func
709 extern int $func();
710 int main(void){ $func(); }
711 EOF
712 }
713
714 check_mathfunc(){
715     log check_mathfunc "$@"
716     func=$1
717     shift
718     disable $func
719     check_ld "$@" <<EOF && enable $func
720 #include <math.h>
721 float foo(float f) { return $func(f); }
722 int main(void){ return 0; }
723 EOF
724 }
725
726 check_func_headers(){
727     log check_func_headers "$@"
728     headers=$1
729     funcs=$2
730     shift 2
731     {
732         for hdr in $headers; do
733             echo "#include <$hdr>"
734         done
735         for func in $funcs; do
736             echo "long check_$func(void) { return (long) $func; }"
737         done
738         echo "int main(void) { return 0; }"
739     } | check_ld "$@" && enable $funcs && enable_safe $headers
740 }
741
742 check_cpp_condition(){
743     log check_cpp_condition "$@"
744     header=$1
745     condition=$2
746     shift 2
747     check_cpp $($filter_cppflags "$@") <<EOF
748 #include <$header>
749 #if !($condition)
750 #error "unsatisfied condition: $condition"
751 #endif
752 EOF
753 }
754
755 check_lib(){
756     log check_lib "$@"
757     header="$1"
758     func="$2"
759     shift 2
760     check_header $header && check_func $func "$@" && add_extralibs "$@"
761 }
762
763 check_lib2(){
764     log check_lib2 "$@"
765     headers="$1"
766     funcs="$2"
767     shift 2
768     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
769 }
770
771 check_pkg_config(){
772     log check_pkg_config "$@"
773     pkg="$1"
774     headers="$2"
775     funcs="$3"
776     shift 3
777     $pkg_config --exists $pkg || return
778     pkg_cflags=$($pkg_config --cflags $pkg)
779     pkg_libs=$($pkg_config --libs $pkg)
780     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
781         set_safe ${pkg}_cflags $pkg_cflags   &&
782         set_safe ${pkg}_libs   $pkg_libs
783 }
784
785 check_exec(){
786     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
787 }
788
789 check_exec_crash(){
790     code=$(cat)
791
792     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
793     # are safe but may not be available everywhere.  Thus we use
794     # raise(SIGTERM) instead.  The check is run in a subshell so we
795     # can redirect the "Terminated" message from the shell.  SIGBUS
796     # is not defined by standard C so it is used conditionally.
797
798     (check_exec "$@") >> $logfile 2>&1 <<EOF
799 #include <signal.h>
800 static void sighandler(int sig){
801     raise(SIGTERM);
802 }
803 int main(void){
804     signal(SIGILL, sighandler);
805     signal(SIGFPE, sighandler);
806     signal(SIGSEGV, sighandler);
807 #ifdef SIGBUS
808     signal(SIGBUS, sighandler);
809 #endif
810     { $code }
811 }
812 EOF
813 }
814
815 check_type(){
816     log check_type "$@"
817     headers=$1
818     type=$2
819     shift 2
820     disable_safe "$type"
821     incs=""
822     for hdr in $headers; do
823         incs="$incs
824 #include <$hdr>"
825     done
826     check_cc "$@" <<EOF && enable_safe "$type"
827 $incs
828 $type v;
829 EOF
830 }
831
832 check_struct(){
833     log check_type "$@"
834     headers=$1
835     struct=$2
836     member=$3
837     shift 3
838     disable_safe "${struct}_${member}"
839     incs=""
840     for hdr in $headers; do
841         incs="$incs
842 #include <$hdr>"
843     done
844     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
845 $incs
846 const void *p = &(($struct *)0)->$member;
847 EOF
848 }
849
850 require(){
851     name="$1"
852     header="$2"
853     func="$3"
854     shift 3
855     check_lib $header $func "$@" || die "ERROR: $name not found"
856 }
857
858 require2(){
859     name="$1"
860     headers="$2"
861     func="$3"
862     shift 3
863     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
864 }
865
866 require_pkg_config(){
867     pkg="$1"
868     check_pkg_config "$@" || die "ERROR: $pkg not found"
869     add_cflags    $(get_safe ${pkg}_cflags)
870     add_extralibs $(get_safe ${pkg}_libs)
871 }
872
873 check_host_cc(){
874     log check_host_cc "$@"
875     cat > $TMPC
876     log_file $TMPC
877     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
878 }
879
880 check_host_cflags(){
881     log check_host_cflags "$@"
882     check_host_cc "$@" <<EOF && append host_cflags "$@"
883 int x;
884 EOF
885 }
886
887 apply(){
888     file=$1
889     shift
890     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
891 }
892
893 cp_if_changed(){
894     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
895     mkdir -p "$(dirname $2)"
896     cp -f "$1" "$2"
897 }
898
899 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
900 # system-dependent things.
901
902 COMPONENT_LIST="
903     bsfs
904     decoders
905     demuxers
906     encoders
907     filters
908     hwaccels
909     indevs
910     muxers
911     outdevs
912     parsers
913     protocols
914 "
915
916 PROGRAM_LIST="
917     avconv
918     avplay
919     avprobe
920     avserver
921 "
922
923 CONFIG_LIST="
924     $COMPONENT_LIST
925     $PROGRAM_LIST
926     ac3dsp
927     avcodec
928     avdevice
929     avfilter
930     avformat
931     avresample
932     avisynth
933     bzlib
934     dct
935     doc
936     dwt
937     dxva2
938     fastdiv
939     fft
940     frei0r
941     gnutls
942     gpl
943     gray
944     hardcoded_tables
945     libcdio
946     libdc1394
947     libfaac
948     libfreetype
949     libgsm
950     libmp3lame
951     libnut
952     libopencore_amrnb
953     libopencore_amrwb
954     libopencv
955     libopenjpeg
956     libpulse
957     librtmp
958     libschroedinger
959     libspeex
960     libtheora
961     libvo_aacenc
962     libvo_amrwbenc
963     libvorbis
964     libvpx
965     libx264
966     libxavs
967     libxvid
968     lsp
969     mdct
970     memalign_hack
971     mpegaudiodsp
972     network
973     nonfree
974     openssl
975     pic
976     rdft
977     rtpdec
978     runtime_cpudetect
979     safe_bitstream_reader
980     shared
981     sinewin
982     small
983     sram
984     static
985     swscale
986     swscale_alpha
987     thumb
988     vaapi
989     vda
990     vdpau
991     version3
992     xmm_clobber_test
993     x11grab
994     zlib
995 "
996
997 THREADS_LIST='
998     pthreads
999     w32threads
1000 '
1001
1002 ARCH_LIST='
1003     alpha
1004     arm
1005     avr32
1006     avr32_ap
1007     avr32_uc
1008     bfin
1009     ia64
1010     m68k
1011     mips
1012     mips64
1013     parisc
1014     ppc
1015     ppc64
1016     s390
1017     sh4
1018     sparc
1019     sparc64
1020     tomi
1021     x86
1022     x86_32
1023     x86_64
1024 '
1025
1026 ARCH_EXT_LIST='
1027     altivec
1028     amd3dnow
1029     amd3dnowext
1030     armv5te
1031     armv6
1032     armv6t2
1033     armvfp
1034     avx
1035     mmi
1036     mmx
1037     mmx2
1038     neon
1039     ppc4xx
1040     sse
1041     ssse3
1042     vfpv3
1043     vis
1044 '
1045
1046 HAVE_LIST_PUB='
1047     bigendian
1048     fast_unaligned
1049 '
1050
1051 HAVE_LIST="
1052     $ARCH_EXT_LIST
1053     $HAVE_LIST_PUB
1054     $THREADS_LIST
1055     aligned_stack
1056     alsa_asoundlib_h
1057     altivec_h
1058     arpa_inet_h
1059     asm_mod_y
1060     attribute_may_alias
1061     attribute_packed
1062     closesocket
1063     cmov
1064     dcbzl
1065     dev_bktr_ioctl_bt848_h
1066     dev_bktr_ioctl_meteor_h
1067     dev_ic_bt8xx_h
1068     dev_video_bktr_ioctl_bt848_h
1069     dev_video_meteor_ioctl_meteor_h
1070     dlfcn_h
1071     dlopen
1072     dos_paths
1073     ebp_available
1074     ebx_available
1075     exp2
1076     exp2f
1077     fast_64bit
1078     fast_clz
1079     fast_cmov
1080     fcntl
1081     fork
1082     getaddrinfo
1083     gethrtime
1084     GetProcessAffinityMask
1085     GetProcessMemoryInfo
1086     GetProcessTimes
1087     getrusage
1088     gnu_as
1089     ibm_asm
1090     inet_aton
1091     inline_asm
1092     isatty
1093     ldbrx
1094     libdc1394_1
1095     libdc1394_2
1096     llrint
1097     llrintf
1098     local_aligned_16
1099     local_aligned_8
1100     localtime_r
1101     log2
1102     log2f
1103     loongson
1104     lrint
1105     lrintf
1106     machine_ioctl_bt848_h
1107     machine_ioctl_meteor_h
1108     malloc_h
1109     MapViewOfFile
1110     memalign
1111     mkstemp
1112     mmap
1113     poll_h
1114     posix_memalign
1115     round
1116     roundf
1117     sched_getaffinity
1118     sdl
1119     sdl_video_size
1120     setmode
1121     setrlimit
1122     sndio_h
1123     socklen_t
1124     soundcard_h
1125     strerror_r
1126     strptime
1127     strtok_r
1128     struct_addrinfo
1129     struct_ipv6_mreq
1130     struct_rusage_ru_maxrss
1131     struct_sockaddr_in6
1132     struct_sockaddr_sa_len
1133     struct_sockaddr_storage
1134     struct_v4l2_frmivalenum_discrete
1135     symver
1136     symver_asm_label
1137     symver_gnu_asm
1138     sysconf
1139     sysctl
1140     sys_mman_h
1141     sys_param_h
1142     sys_resource_h
1143     sys_select_h
1144     sys_soundcard_h
1145     sys_videoio_h
1146     threads
1147     trunc
1148     truncf
1149     vfp_args
1150     VirtualAlloc
1151     winsock2_h
1152     xform_asm
1153     xmm_clobbers
1154     yasm
1155 "
1156
1157 # options emitted with CONFIG_ prefix but not available on command line
1158 CONFIG_EXTRA="
1159     aandct
1160     avutil
1161     golomb
1162     gplv3
1163     h264chroma
1164     h264dsp
1165     h264pred
1166     h264qpel
1167     huffman
1168     lgplv3
1169     lpc
1170 "
1171
1172 CMDLINE_SELECT="
1173     $ARCH_EXT_LIST
1174     $CONFIG_LIST
1175     $THREADS_LIST
1176     asm
1177     cross_compile
1178     debug
1179     extra_warnings
1180     logging
1181     optimizations
1182     symver
1183     yasm
1184 "
1185
1186 PATHS_LIST='
1187     bindir
1188     datadir
1189     incdir
1190     libdir
1191     mandir
1192     prefix
1193     shlibdir
1194 '
1195
1196 CMDLINE_SET="
1197     $PATHS_LIST
1198     ar
1199     arch
1200     as
1201     build_suffix
1202     cc
1203     cpu
1204     cross_prefix
1205     dep_cc
1206     extra_version
1207     host_cc
1208     host_cflags
1209     host_ldflags
1210     host_libs
1211     host_os
1212     ld
1213     logfile
1214     malloc_prefix
1215     nm
1216     optflags
1217     pkg_config
1218     samples
1219     sysinclude
1220     sysroot
1221     target_exec
1222     target_os
1223     target_path
1224 "
1225
1226 CMDLINE_APPEND="
1227     extra_cflags
1228 "
1229
1230 # code dependency declarations
1231
1232 # architecture extensions
1233
1234 armv5te_deps="arm"
1235 armv6_deps="arm"
1236 armv6t2_deps="arm"
1237 armvfp_deps="arm"
1238 neon_deps="arm"
1239 vfpv3_deps="armvfp"
1240
1241 mmi_deps="mips"
1242
1243 altivec_deps="ppc"
1244 ppc4xx_deps="ppc"
1245
1246 vis_deps="sparc"
1247
1248 x86_64_suggest="cmov fast_cmov"
1249 amd3dnow_deps="mmx"
1250 amd3dnowext_deps="amd3dnow"
1251 mmx_deps="x86"
1252 mmx2_deps="mmx"
1253 sse_deps="mmx"
1254 ssse3_deps="sse"
1255 avx_deps="ssse3"
1256
1257 aligned_stack_if_any="ppc x86"
1258 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1259 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1260 fast_unaligned_if_any="armv6 ppc x86"
1261
1262 inline_asm_deps="!tms470"
1263 need_memalign="altivec neon sse"
1264
1265 symver_if_any="symver_asm_label symver_gnu_asm"
1266
1267 # subsystems
1268 dct_select="rdft"
1269 mdct_select="fft"
1270 rdft_select="fft"
1271 mpegaudiodsp_select="dct"
1272
1273 # decoders / encoders / hardware accelerators
1274 aac_decoder_select="mdct sinewin"
1275 aac_encoder_select="mdct sinewin"
1276 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1277 ac3_decoder_select="mdct ac3dsp ac3_parser"
1278 ac3_encoder_select="mdct ac3dsp"
1279 ac3_fixed_encoder_select="mdct ac3dsp"
1280 alac_encoder_select="lpc"
1281 amrnb_decoder_select="lsp"
1282 amrwb_decoder_select="lsp"
1283 atrac1_decoder_select="mdct sinewin"
1284 atrac3_decoder_select="mdct"
1285 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1286 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1287 cavs_decoder_select="golomb"
1288 cook_decoder_select="mdct sinewin"
1289 cscd_decoder_suggest="zlib"
1290 dca_decoder_select="mdct"
1291 dnxhd_encoder_select="aandct"
1292 dxa_decoder_select="zlib"
1293 eac3_decoder_select="ac3_decoder"
1294 eac3_encoder_select="mdct ac3dsp"
1295 eamad_decoder_select="aandct"
1296 eatgq_decoder_select="aandct"
1297 eatqi_decoder_select="aandct"
1298 ffv1_decoder_select="golomb"
1299 flac_decoder_select="golomb"
1300 flac_encoder_select="golomb lpc"
1301 flashsv_decoder_select="zlib"
1302 flashsv_encoder_select="zlib"
1303 flashsv2_decoder_select="zlib"
1304 flv_decoder_select="h263_decoder"
1305 flv_encoder_select="h263_encoder"
1306 fraps_decoder_select="huffman"
1307 h261_encoder_select="aandct"
1308 h263_decoder_select="h263_parser"
1309 h263_encoder_select="aandct"
1310 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1311 h263i_decoder_select="h263_decoder"
1312 h263p_encoder_select="h263_encoder"
1313 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1314 h264_dxva2_hwaccel_deps="dxva2api_h"
1315 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1316 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1317 h264_vda_hwaccel_select="vda h264_decoder"
1318 h264_vdpau_decoder_select="vdpau h264_decoder"
1319 imc_decoder_select="fft mdct sinewin"
1320 jpegls_decoder_select="golomb"
1321 jpegls_encoder_select="golomb"
1322 ljpeg_encoder_select="aandct"
1323 loco_decoder_select="golomb"
1324 mjpeg_encoder_select="aandct"
1325 mlp_decoder_select="mlp_parser"
1326 mp1_decoder_select="mpegaudiodsp"
1327 mp1float_decoder_select="mpegaudiodsp"
1328 mp2_decoder_select="mpegaudiodsp"
1329 mp2float_decoder_select="mpegaudiodsp"
1330 mp3_decoder_select="mpegaudiodsp"
1331 mp3adu_decoder_select="mpegaudiodsp"
1332 mp3adufloat_decoder_select="mpegaudiodsp"
1333 mp3float_decoder_select="mpegaudiodsp"
1334 mp3on4_decoder_select="mpegaudiodsp"
1335 mp3on4float_decoder_select="mpegaudiodsp"
1336 mpc7_decoder_select="mpegaudiodsp"
1337 mpc8_decoder_select="mpegaudiodsp"
1338 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1339 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1340 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1341 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1342 mpeg1video_encoder_select="aandct"
1343 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1344 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1345 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1346 mpeg2video_encoder_select="aandct"
1347 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1348 mpeg4_encoder_select="h263_encoder"
1349 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1350 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1351 msmpeg4v1_decoder_select="h263_decoder"
1352 msmpeg4v1_encoder_select="h263_encoder"
1353 msmpeg4v2_decoder_select="h263_decoder"
1354 msmpeg4v2_encoder_select="h263_encoder"
1355 msmpeg4v3_decoder_select="h263_decoder"
1356 msmpeg4v3_encoder_select="h263_encoder"
1357 nellymoser_decoder_select="mdct sinewin"
1358 nellymoser_encoder_select="mdct sinewin"
1359 png_decoder_select="zlib"
1360 png_encoder_select="zlib"
1361 qcelp_decoder_select="lsp"
1362 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1363 ra_144_encoder_select="lpc"
1364 ralf_decoder_select="golomb"
1365 rv10_decoder_select="h263_decoder"
1366 rv10_encoder_select="h263_encoder"
1367 rv20_decoder_select="h263_decoder"
1368 rv20_encoder_select="h263_encoder"
1369 rv30_decoder_select="golomb h264chroma h264pred h264qpel"
1370 rv40_decoder_select="golomb h264chroma h264pred h264qpel"
1371 shorten_decoder_select="golomb"
1372 sipr_decoder_select="lsp"
1373 snow_decoder_select="dwt"
1374 snow_encoder_select="aandct dwt"
1375 svq1_encoder_select="aandct"
1376 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1377 svq3_decoder_suggest="zlib"
1378 theora_decoder_select="vp3_decoder"
1379 tiff_decoder_suggest="zlib"
1380 tiff_encoder_suggest="zlib"
1381 truehd_decoder_select="mlp_decoder"
1382 tscc_decoder_select="zlib"
1383 twinvq_decoder_select="mdct lsp sinewin"
1384 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1385 vc1_dxva2_hwaccel_deps="dxva2api_h"
1386 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1387 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1388 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1389 vc1image_decoder_select="vc1_decoder"
1390 vorbis_decoder_select="mdct"
1391 vorbis_encoder_select="mdct"
1392 vp6_decoder_select="huffman"
1393 vp6a_decoder_select="vp6_decoder"
1394 vp6f_decoder_select="vp6_decoder"
1395 vp8_decoder_select="h264pred h264qpel"
1396 wmapro_decoder_select="mdct sinewin"
1397 wmav1_decoder_select="mdct sinewin"
1398 wmav1_encoder_select="mdct sinewin"
1399 wmav2_decoder_select="mdct sinewin"
1400 wmav2_encoder_select="mdct sinewin"
1401 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1402 wmv1_decoder_select="h263_decoder"
1403 wmv1_encoder_select="h263_encoder"
1404 wmv2_decoder_select="h263_decoder"
1405 wmv2_encoder_select="h263_encoder"
1406 wmv3_decoder_select="vc1_decoder"
1407 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1408 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1409 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1410 wmv3image_decoder_select="wmv3_decoder"
1411 zerocodec_decoder_select="zlib"
1412 zlib_decoder_select="zlib"
1413 zlib_encoder_select="zlib"
1414 zmbv_decoder_select="zlib"
1415 zmbv_encoder_select="zlib"
1416
1417 vaapi_deps="va_va_h"
1418 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1419 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1420
1421 # parsers
1422 h264_parser_select="golomb h264dsp h264pred"
1423
1424 # external libraries
1425 libfaac_encoder_deps="libfaac"
1426 libgsm_decoder_deps="libgsm"
1427 libgsm_encoder_deps="libgsm"
1428 libgsm_ms_decoder_deps="libgsm"
1429 libgsm_ms_encoder_deps="libgsm"
1430 libmp3lame_encoder_deps="libmp3lame"
1431 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1432 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1433 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1434 libopenjpeg_decoder_deps="libopenjpeg"
1435 libschroedinger_decoder_deps="libschroedinger"
1436 libschroedinger_encoder_deps="libschroedinger"
1437 libspeex_decoder_deps="libspeex"
1438 libspeex_encoder_deps="libspeex"
1439 libtheora_encoder_deps="libtheora"
1440 libvo_aacenc_encoder_deps="libvo_aacenc"
1441 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1442 libvorbis_encoder_deps="libvorbis"
1443 libvpx_decoder_deps="libvpx"
1444 libvpx_encoder_deps="libvpx"
1445 libx264_encoder_deps="libx264"
1446 libxavs_encoder_deps="libxavs"
1447 libxvid_encoder_deps="libxvid"
1448
1449 # demuxers / muxers
1450 ac3_demuxer_select="ac3_parser"
1451 asf_stream_muxer_select="asf_muxer"
1452 avisynth_demuxer_deps="avisynth"
1453 dirac_demuxer_select="dirac_parser"
1454 eac3_demuxer_select="ac3_parser"
1455 flac_demuxer_select="flac_parser"
1456 ipod_muxer_select="mov_muxer"
1457 libnut_demuxer_deps="libnut"
1458 libnut_muxer_deps="libnut"
1459 matroska_audio_muxer_select="matroska_muxer"
1460 matroska_demuxer_suggest="zlib bzlib"
1461 mov_demuxer_suggest="zlib"
1462 mp3_demuxer_select="mpegaudio_parser"
1463 mp4_muxer_select="mov_muxer"
1464 mpegtsraw_demuxer_select="mpegts_demuxer"
1465 mxf_d10_muxer_select="mxf_muxer"
1466 ogg_demuxer_select="golomb"
1467 psp_muxer_select="mov_muxer"
1468 rtp_demuxer_select="sdp_demuxer"
1469 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1470 rtsp_demuxer_select="http_protocol rtpdec"
1471 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1472 sap_demuxer_select="sdp_demuxer"
1473 sap_muxer_select="rtp_muxer rtp_protocol"
1474 sdp_demuxer_select="rtpdec"
1475 spdif_muxer_select="aac_parser"
1476 tg2_muxer_select="mov_muxer"
1477 tgp_muxer_select="mov_muxer"
1478 w64_demuxer_deps="wav_demuxer"
1479
1480 # indevs / outdevs
1481 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1482 alsa_outdev_deps="alsa_asoundlib_h"
1483 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1484 dv1394_indev_deps="dv1394 dv_demuxer"
1485 fbdev_indev_deps="linux_fb_h"
1486 jack_indev_deps="jack_jack_h"
1487 libcdio_indev_deps="libcdio"
1488 libdc1394_indev_deps="libdc1394"
1489 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1490 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1491 pulse_indev_deps="libpulse"
1492 sndio_indev_deps="sndio_h"
1493 sndio_outdev_deps="sndio_h"
1494 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1495 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1496 vfwcap_indev_extralibs="-lavicap32"
1497 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1498
1499 # protocols
1500 gopher_protocol_deps="network"
1501 httpproxy_protocol_deps="network"
1502 httpproxy_protocol_select="tcp_protocol"
1503 http_protocol_deps="network"
1504 http_protocol_select="tcp_protocol"
1505 https_protocol_select="tls_protocol"
1506 librtmp_protocol_deps="librtmp"
1507 librtmpe_protocol_deps="librtmp"
1508 librtmps_protocol_deps="librtmp"
1509 librtmpt_protocol_deps="librtmp"
1510 librtmpte_protocol_deps="librtmp"
1511 mmsh_protocol_select="http_protocol"
1512 mmst_protocol_deps="network"
1513 rtmp_protocol_deps="!librtmp_protocol"
1514 rtmp_protocol_select="tcp_protocol"
1515 rtp_protocol_select="udp_protocol"
1516 tcp_protocol_deps="network"
1517 tls_protocol_deps_any="openssl gnutls"
1518 tls_protocol_select="tcp_protocol"
1519 udp_protocol_deps="network"
1520
1521 # filters
1522 blackframe_filter_deps="gpl"
1523 boxblur_filter_deps="gpl"
1524 cropdetect_filter_deps="gpl"
1525 delogo_filter_deps="gpl"
1526 drawtext_filter_deps="libfreetype"
1527 frei0r_filter_deps="frei0r dlopen strtok_r"
1528 frei0r_filter_extralibs='$ldl'
1529 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1530 frei0r_src_filter_extralibs='$ldl'
1531 hqdn3d_filter_deps="gpl"
1532 ocv_filter_deps="libopencv"
1533 yadif_filter_deps="gpl"
1534
1535 # libraries
1536 avdevice_deps="avcodec avformat"
1537 avfilter_deps="swscale"
1538 avformat_deps="avcodec"
1539
1540 # programs
1541 avconv_deps="avcodec avfilter avformat avresample swscale"
1542 avplay_deps="avcodec avformat swscale sdl"
1543 avplay_select="rdft"
1544 avprobe_deps="avcodec avformat"
1545 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1546 avserver_extralibs='$ldl'
1547
1548 doc_deps="texi2html"
1549
1550 # tests
1551
1552 test_deps(){
1553     suf1=$1
1554     suf2=$2
1555     shift 2
1556     for v; do
1557         dep=${v%=*}
1558         tests=${v#*=}
1559         for name in ${tests}; do
1560             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1561         done
1562     done
1563 }
1564
1565 mxf_d10_test_deps="avfilter"
1566 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1567
1568 test_deps _encoder _decoder                                             \
1569     adpcm_ima_qt                                                        \
1570     adpcm_ima_wav                                                       \
1571     adpcm_ms                                                            \
1572     adpcm_swf                                                           \
1573     adpcm_yamaha=adpcm_yam                                              \
1574     alac                                                                \
1575     asv1                                                                \
1576     asv2                                                                \
1577     bmp                                                                 \
1578     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1579     dvvideo="dv dv_411 dv50"                                            \
1580     ffv1                                                                \
1581     flac                                                                \
1582     flashsv                                                             \
1583     flv                                                                 \
1584     adpcm_g726=g726                                                     \
1585     gif                                                                 \
1586     h261                                                                \
1587     h263="h263 h263p"                                                   \
1588     huffyuv                                                             \
1589     jpegls                                                              \
1590     mjpeg="jpg mjpeg ljpeg"                                             \
1591     mp2                                                                 \
1592     mpeg1video="mpeg mpeg1b"                                            \
1593     mpeg2video="mpeg2 mpeg2_422 mpeg2_idct_int mpeg2_ilace mpeg2_ivlc_qprd" \
1594     mpeg2video="mpeg2thread mpeg2thread_ilace"                          \
1595     mpeg4="mpeg4 mpeg4_adap mpeg4_qpel mpeg4_qprd mpeg4adv mpeg4nr"     \
1596     mpeg4="mpeg4thread error rc"                                        \
1597     msmpeg4v3=msmpeg4                                                   \
1598     msmpeg4v2                                                           \
1599     pbm=pbmpipe                                                         \
1600     pcx                                                                 \
1601     pgm="pgm pgmpipe"                                                   \
1602     png                                                                 \
1603     ppm="ppm ppmpipe"                                                   \
1604     rawvideo="rgb yuv"                                                  \
1605     roq                                                                 \
1606     rv10                                                                \
1607     rv20                                                                \
1608     sgi                                                                 \
1609     snow="snow snowll"                                                  \
1610     svq1                                                                \
1611     targa=tga                                                           \
1612     tiff                                                                \
1613     wmav1                                                               \
1614     wmav2                                                               \
1615     wmv1                                                                \
1616     wmv2                                                                \
1617
1618 test_deps _muxer _demuxer                                               \
1619     aiff                                                                \
1620     pcm_alaw=alaw                                                       \
1621     asf                                                                 \
1622     au                                                                  \
1623     avi                                                                 \
1624     dv=dv_fmt                                                           \
1625     ffm                                                                 \
1626     flv=flv_fmt                                                         \
1627     gxf                                                                 \
1628     matroska=mkv                                                        \
1629     mmf                                                                 \
1630     mov                                                                 \
1631     pcm_mulaw=mulaw                                                     \
1632     mxf="mxf mxf_d10"                                                   \
1633     nut                                                                 \
1634     ogg                                                                 \
1635     rawvideo=pixfmt                                                     \
1636     rm                                                                  \
1637     swf                                                                 \
1638     mpegts=ts                                                           \
1639     voc                                                                 \
1640     wav                                                                 \
1641     yuv4mpegpipe=yuv4mpeg                                               \
1642
1643 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder"
1644 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1645
1646 # default parameters
1647
1648 logfile="config.log"
1649
1650 # installation paths
1651 prefix_default="/usr/local"
1652 bindir_default='${prefix}/bin'
1653 datadir_default='${prefix}/share/avconv'
1654 incdir_default='${prefix}/include'
1655 libdir_default='${prefix}/lib'
1656 mandir_default='${prefix}/share/man'
1657 shlibdir_default="$libdir_default"
1658
1659 # toolchain
1660 ar_default="ar"
1661 cc_default="gcc"
1662 cc_version=\"unknown\"
1663 host_cc_default="gcc"
1664 ln_s="ln -sf"
1665 nm_default="nm"
1666 objformat="elf"
1667 pkg_config_default=pkg-config
1668 ranlib="ranlib"
1669 yasmexe="yasm"
1670
1671 nm_opts='-g'
1672 nogas=":"
1673
1674 # machine
1675 arch_default=$(uname -m)
1676 cpu="generic"
1677
1678 # OS
1679 target_os_default=$(tolower $(uname -s))
1680 host_os=$target_os_default
1681
1682 # configurable options
1683 enable $PROGRAM_LIST
1684
1685 enable avcodec
1686 enable avdevice
1687 enable avfilter
1688 enable avformat
1689 enable avresample
1690 enable avutil
1691 enable swscale
1692
1693 enable asm
1694 enable debug
1695 enable doc
1696 enable fastdiv
1697 enable network
1698 enable optimizations
1699 enable safe_bitstream_reader
1700 enable static
1701 enable swscale_alpha
1702
1703 # build settings
1704 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1705 AVSERVERLDFLAGS=-Wl,-E
1706 LIBPREF="lib"
1707 LIBSUF=".a"
1708 FULLNAME='$(NAME)$(BUILDSUF)'
1709 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1710 SLIBPREF="lib"
1711 SLIBSUF=".so"
1712 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1713 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1714 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1715 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1716 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1717 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1718
1719 AS_O='-o $@'
1720 CC_O='-o $@'
1721
1722 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1723 host_libs='-lm'
1724
1725 target_path='$(CURDIR)'
1726
1727 # since the object filename is not given with the -MM flag, the compiler
1728 # is only able to print the basename, and we must add the path ourselves
1729 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1730 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1731
1732 # find source path
1733 if test -f configure; then
1734     source_path=.
1735 else
1736     source_path=$(cd $(dirname "$0"); pwd)
1737     echo "$source_path" | grep -q '[[:blank:]]' &&
1738         die "Out of tree builds are impossible with whitespace in source path."
1739     test -e "$source_path/config.h" &&
1740         die "Out of tree builds are impossible with config.h in source dir."
1741 fi
1742
1743 for v in "$@"; do
1744     r=${v#*=}
1745     l=${v%"$r"}
1746     r=$(sh_quote "$r")
1747     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1748 done
1749
1750 find_things(){
1751     thing=$1
1752     pattern=$2
1753     file=$source_path/$3
1754     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1755 }
1756
1757 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1758 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1759 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1760 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1761 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1762 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1763 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1764 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1765 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1766 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1767 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1768
1769 ALL_COMPONENTS="
1770     $BSF_LIST
1771     $DECODER_LIST
1772     $DEMUXER_LIST
1773     $ENCODER_LIST
1774     $FILTER_LIST
1775     $HWACCEL_LIST
1776     $INDEV_LIST
1777     $MUXER_LIST
1778     $OUTDEV_LIST
1779     $PARSER_LIST
1780     $PROTOCOL_LIST
1781 "
1782
1783 find_tests(){
1784     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1785 }
1786
1787 ACODEC_TESTS=$(find_tests acodec)
1788 VCODEC_TESTS=$(find_tests vsynth1)
1789 LAVF_TESTS=$(find_tests lavf)
1790 LAVFI_TESTS=$(find_tests lavfi)
1791 SEEK_TESTS=$(find_tests seek seek_)
1792
1793 ALL_TESTS="$ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
1794
1795 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1796
1797 for n in $COMPONENT_LIST; do
1798     v=$(toupper ${n%s})_LIST
1799     eval enable \$$v
1800     eval ${n}_if_any="\$$v"
1801 done
1802
1803 enable $ARCH_EXT_LIST $ALL_TESTS
1804
1805 die_unknown(){
1806     echo "Unknown option \"$1\"."
1807     echo "See $0 --help for available options."
1808     exit 1
1809 }
1810
1811 show_list() {
1812     suffix=_$1
1813     shift
1814     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1815     exit 0
1816 }
1817
1818 for opt do
1819     optval="${opt#*=}"
1820     case "$opt" in
1821     --extra-ldflags=*) add_ldflags $optval
1822     ;;
1823     --extra-libs=*) add_extralibs $optval
1824     ;;
1825     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1826     ;;
1827     --enable-debug=*) debuglevel="$optval"
1828     ;;
1829     --disable-everything)
1830     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1831     ;;
1832     --enable-*=*|--disable-*=*)
1833     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1834     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1835     eval list=\$$(toupper $thing)_LIST
1836     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1837     $action $(filter "$name" $list)
1838     ;;
1839     --enable-?*|--disable-?*)
1840     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1841     if is_in $option $COMPONENT_LIST; then
1842         test $action = disable && action=unset
1843         eval $action \$$(toupper ${option%s})_LIST
1844     elif is_in $option $CMDLINE_SELECT; then
1845         $action $option
1846     else
1847         die_unknown $opt
1848     fi
1849     ;;
1850     --list-*)
1851         NAME="${opt#--list-}"
1852         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1853         NAME=${NAME%s}
1854         eval show_list $NAME \$$(toupper $NAME)_LIST
1855     ;;
1856     --help|-h) show_help
1857     ;;
1858     *)
1859     optname="${opt%%=*}"
1860     optname="${optname#--}"
1861     optname=$(echo "$optname" | sed 's/-/_/g')
1862     if is_in $optname $CMDLINE_SET; then
1863         eval $optname='$optval'
1864     elif is_in $optname $CMDLINE_APPEND; then
1865         append $optname "$optval"
1866     else
1867          die_unknown $opt
1868     fi
1869     ;;
1870     esac
1871 done
1872
1873 disabled logging && logfile=/dev/null
1874
1875 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1876 set >> $logfile
1877
1878 test -n "$cross_prefix" && enable cross_compile
1879
1880 if enabled cross_compile; then
1881     test -n "$arch" && test -n "$target_os" ||
1882         die "Must specify target arch and OS when cross-compiling"
1883 fi
1884
1885 set_default arch target_os
1886
1887 ar_default="${cross_prefix}${ar_default}"
1888 cc_default="${cross_prefix}${cc_default}"
1889 nm_default="${cross_prefix}${nm_default}"
1890 pkg_config_default="${cross_prefix}${pkg_config_default}"
1891 ranlib="${cross_prefix}${ranlib}"
1892
1893 sysinclude_default="${sysroot}/usr/include"
1894
1895 set_default cc nm pkg_config sysinclude
1896 enabled cross_compile || host_cc_default=$cc
1897 set_default host_cc
1898
1899 if ! $pkg_config --version >/dev/null 2>&1; then
1900     warn "$pkg_config not found, library detection may fail."
1901     pkg_config=false
1902 fi
1903
1904 exesuf() {
1905     case $1 in
1906         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1907     esac
1908 }
1909
1910 EXESUF=$(exesuf $target_os)
1911 HOSTEXESUF=$(exesuf $host_os)
1912
1913 # set temporary file name
1914 : ${TMPDIR:=$TEMPDIR}
1915 : ${TMPDIR:=$TMP}
1916 : ${TMPDIR:=/tmp}
1917
1918 if ! check_cmd mktemp -u XXXXXX; then
1919     # simple replacement for missing mktemp
1920     # NOT SAFE FOR GENERAL USE
1921     mktemp(){
1922         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1923     }
1924 fi
1925
1926 tmpfile(){
1927     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1928         (set -C; exec > $tmp) 2>/dev/null ||
1929         die "Unable to create temporary file in $TMPDIR."
1930     append TMPFILES $tmp
1931     eval $1=$tmp
1932 }
1933
1934 trap 'rm -f -- $TMPFILES' EXIT
1935
1936 tmpfile TMPASM .asm
1937 tmpfile TMPC   .c
1938 tmpfile TMPE   $EXESUF
1939 tmpfile TMPH   .h
1940 tmpfile TMPO   .o
1941 tmpfile TMPS   .S
1942 tmpfile TMPSH  .sh
1943 tmpfile TMPV   .ver
1944
1945 unset -f mktemp
1946
1947 chmod +x $TMPE
1948
1949 # make sure we can execute files in $TMPDIR
1950 cat > $TMPSH 2>> $logfile <<EOF
1951 #! /bin/sh
1952 EOF
1953 chmod +x $TMPSH >> $logfile 2>&1
1954 if ! $TMPSH >> $logfile 2>&1; then
1955     cat <<EOF
1956 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1957 variable to another directory and make sure that it is not mounted noexec.
1958 EOF
1959     die "Sanity test failed."
1960 fi
1961
1962 filter_asflags=echo
1963 filter_cflags=echo
1964 filter_cppflags=echo
1965
1966 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1967     cc_type=llvm_gcc
1968     cc_version=__VERSION__
1969     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1970     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1971     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1972     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1973     speed_cflags='-O3'
1974     size_cflags='-Os'
1975 elif $cc -v 2>&1 | grep -qi ^gcc; then
1976     cc_type=gcc
1977     cc_version=__VERSION__
1978     gcc_version=$($cc --version | head -n1)
1979     gcc_basever=$($cc -dumpversion)
1980     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1981     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1982     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1983     if ! $cc -dumpversion | grep -q '^2\.'; then
1984         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1985         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1986     fi
1987     speed_cflags='-O3'
1988     size_cflags='-Os'
1989 elif $cc --version 2>/dev/null | grep -q Intel; then
1990     cc_type=icc
1991     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1992     cc_ident=$($cc --version | head -n1)
1993     icc_version=$($cc -dumpversion)
1994     CC_DEPFLAGS='-MMD'
1995     AS_DEPFLAGS='-MMD'
1996     speed_cflags='-O3'
1997     size_cflags='-Os'
1998     noopt_cflags='-O1'
1999 elif $cc -v 2>&1 | grep -q xlc; then
2000     cc_type=xlc
2001     cc_version="AV_STRINGIFY(__IBMC__)"
2002     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
2003     speed_cflags='-O5'
2004     size_cflags='-O5 -qcompact'
2005 elif $cc -V 2>/dev/null | grep -q Compaq; then
2006     cc_type=ccc
2007     cc_version="AV_STRINGIFY(__DECC_VER)"
2008     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
2009     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
2010     debuglevel=3
2011     add_ldflags -Wl,-z,now # calls to libots crash without this
2012     speed_cflags='-fast'
2013     size_cflags='-O1'
2014 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2015     test -d "$sysroot" || die "No valid sysroot specified."
2016     cc_type=armcc
2017     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
2018     cc_ident=$($cc --vsn | head -n1)
2019     armcc_conf="$PWD/armcc.conf"
2020     $cc --arm_linux_configure                 \
2021         --arm_linux_config_file="$armcc_conf" \
2022         --configure_sysroot="$sysroot"        \
2023         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2024         die "Error creating armcc configuration file."
2025     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2026     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2027     as_default="${cross_prefix}gcc"
2028     CC_DEPFLAGS='-MMD'
2029     AS_DEPFLAGS='-MMD'
2030     speed_cflags='-O3'
2031     size_cflags='-Os'
2032     filter_asflags="filter_out -W${armcc_opt}*"
2033 elif $cc -version 2>/dev/null | grep -q TMS470; then
2034     cc_type=tms470
2035     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2036     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2037     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2038     CC_O='-fr=$(@D)'
2039     as_default="${cross_prefix}gcc"
2040     ld_default="${cross_prefix}gcc"
2041     TMPO=$(basename $TMPC .c).o
2042     append TMPFILES $TMPO
2043     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2044     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2045     AS_DEPFLAGS='-MMD'
2046     speed_cflags='-O3 -mf=5'
2047     size_cflags='-O3 -mf=2'
2048     filter_cflags=tms470_flags
2049     tms470_flags(){
2050         for flag; do
2051             case $flag in
2052                 -march=*|-mcpu=*)
2053                     case "${flag#*=}" in
2054                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2055                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2056                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2057                         armv6*|arm11*)          echo -mv=6   ;;
2058                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2059                                                 echo -mv=5e  ;;
2060                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2061                     esac
2062                     ;;
2063                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2064                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2065                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2066                 -msoft-float)   echo --float_support=vfplib       ;;
2067                 -O[0-3]|-mf=*)  echo $flag                        ;;
2068                 -g)             echo -g -mn                       ;;
2069                 -pds=*)         echo $flag                        ;;
2070             esac
2071         done
2072     }
2073 elif $cc -v 2>&1 | grep -q clang; then
2074     cc_type=clang
2075     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2076         cc_version=__clang_version__ || cc_version=__VERSION__
2077     cc_ident=$($cc --version | head -n1)
2078     CC_DEPFLAGS='-MMD'
2079     AS_DEPFLAGS='-MMD'
2080     speed_cflags='-O3'
2081     size_cflags='-Os'
2082 elif $cc -V 2>&1 | grep -q Sun; then
2083     cc_type=suncc
2084     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2085     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2086     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2087     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2088     add_ldflags -xc99
2089     speed_cflags='-O5'
2090     size_cflags='-O5 -xspace'
2091     filter_cflags=suncc_flags
2092     suncc_flags(){
2093         for flag; do
2094             case $flag in
2095                 -march=*|-mcpu=*)
2096                     case "${flag#*=}" in
2097                         native)                   echo -xtarget=native       ;;
2098                         v9|niagara)               echo -xarch=sparc          ;;
2099                         ultrasparc)               echo -xarch=sparcvis       ;;
2100                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2101                         i586|pentium)             echo -xchip=pentium        ;;
2102                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2103                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2104                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2105                         pentium4*)          echo -xtarget=pentium4           ;;
2106                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2107                         *-sse3)             echo -xarch=sse3                 ;;
2108                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2109                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2110                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2111                         k8|opteron|athlon64|athlon-fx)
2112                                                   echo -xarch=sse2a          ;;
2113                         athlon*)                  echo -xarch=pentium_proa   ;;
2114                     esac
2115                     ;;
2116                 -std=c99)             echo -xc99              ;;
2117                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2118                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2119                 -W*,*)                echo $flag              ;;
2120                 -f*-*|-W*)                                    ;;
2121                 *)                    echo $flag              ;;
2122             esac
2123         done
2124     }
2125 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2126     cc_type=pathscale
2127     cc_version=__PATHSCALE__
2128     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2129     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2130     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2131     speed_cflags='-O2'
2132     size_cflags='-Os'
2133     filter_cflags='filter_out -Wdisabled-optimization'
2134 elif $cc -v 2>&1 | grep -q Open64; then
2135     cc_type=open64
2136     cc_version=__OPEN64__
2137     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2138     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2139     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2140     speed_cflags='-O2'
2141     size_cflags='-Os'
2142     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2143 elif $cc -V 2>&1 | grep -q Portland; then
2144     cc_type=pgi
2145     cc_version='AV_STRINGIFY(__PGIC__.__PGIC_MINOR__.__PGIC_PATCHLEVEL__)'
2146     cc_ident="PGI $($cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2147     opt_common='-alias=ansi -Mlre -Mpre'
2148     speed_cflags="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2149     size_cflags="-O2 -Munroll=c:1 $opt_common"
2150     noopt_cflags="-O1"
2151     filter_cflags=pgi_flags
2152     pgi_flags(){
2153         for flag; do
2154             case $flag in
2155                 -fomit-frame-pointer) echo -Mnoframe ;;
2156                 -g)                   echo -gopt ;;
2157                 *)                    echo $flag ;;
2158             esac
2159         done
2160     }
2161 fi
2162
2163 test -n "$cc_type" && enable $cc_type ||
2164     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2165
2166 : ${as_default:=$cc}
2167 : ${dep_cc_default:=$cc}
2168 : ${ld_default:=$cc}
2169 set_default ar as dep_cc ld
2170
2171 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2172 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2173
2174 add_cflags $extra_cflags
2175 add_asflags $extra_cflags
2176
2177 if test -n "$sysroot"; then
2178     case "$cc_type" in
2179         gcc|llvm_gcc|clang)
2180             add_cppflags --sysroot="$sysroot"
2181             add_ldflags --sysroot="$sysroot"
2182         ;;
2183         tms470)
2184             add_cppflags -I"$sysinclude"
2185             add_ldflags  --sysroot="$sysroot"
2186         ;;
2187     esac
2188 fi
2189
2190 if test "$cpu" = host; then
2191     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2192
2193     case "$cc_type" in
2194         gcc|llvm_gcc)
2195             check_native(){
2196                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2197                 sed -n "/cc1.*$1=/{
2198                             s/.*$1=\\([^ ]*\\).*/\\1/
2199                             p
2200                             q
2201                         }" $TMPE
2202             }
2203             cpu=$(check_native -march || check_native -mcpu)
2204         ;;
2205     esac
2206
2207     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2208 fi
2209
2210 # Deal with common $arch aliases
2211 case "$arch" in
2212     arm*)
2213         arch="arm"
2214     ;;
2215     mips|mipsel|IP*)
2216         arch="mips"
2217     ;;
2218     mips64*)
2219         arch="mips"
2220         subarch="mips64"
2221     ;;
2222     parisc|hppa)
2223         arch="parisc"
2224     ;;
2225     parisc64|hppa64)
2226         arch="parisc"
2227         subarch="parisc64"
2228     ;;
2229     "Power Macintosh"|ppc|powerpc)
2230         arch="ppc"
2231     ;;
2232     ppc64|powerpc64)
2233         arch="ppc"
2234         subarch="ppc64"
2235     ;;
2236     s390|s390x)
2237         arch="s390"
2238     ;;
2239     sh4|sh)
2240         arch="sh4"
2241     ;;
2242     sun4u|sparc64)
2243         arch="sparc"
2244         subarch="sparc64"
2245     ;;
2246     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2247         arch="x86"
2248     ;;
2249 esac
2250
2251 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2252 enable $arch
2253
2254 # Add processor-specific flags
2255 if test "$cpu" = generic; then
2256     : do nothing
2257 elif enabled ppc; then
2258
2259     case $(tolower $cpu) in
2260         601|ppc601|powerpc601)
2261             cpuflags="-mcpu=601"
2262             disable altivec
2263         ;;
2264         603*|ppc603*|powerpc603*)
2265             cpuflags="-mcpu=603"
2266             disable altivec
2267         ;;
2268         604*|ppc604*|powerpc604*)
2269             cpuflags="-mcpu=604"
2270             disable altivec
2271         ;;
2272         g3|75*|ppc75*|powerpc75*)
2273             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2274             disable altivec
2275         ;;
2276         g4|745*|ppc745*|powerpc745*)
2277             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2278         ;;
2279         74*|ppc74*|powerpc74*)
2280             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2281         ;;
2282         g5|970|ppc970|powerpc970)
2283             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2284         ;;
2285         power[3-7]*)
2286             cpuflags="-mcpu=$cpu -mpowerpc-gfxopt -mpowerpc64"
2287         ;;
2288         cell)
2289             cpuflags="-mcpu=cell"
2290             enable ldbrx
2291         ;;
2292         e500v2)
2293             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2294             disable altivec
2295         ;;
2296         e500)
2297             cpuflags="-mcpu=8540 -mhard-float"
2298             disable altivec
2299         ;;
2300     esac
2301
2302 elif enabled x86; then
2303
2304     case $cpu in
2305         i[345]86|pentium)
2306             cpuflags="-march=$cpu"
2307             disable mmx
2308         ;;
2309         # targets that do NOT support conditional mov (cmov)
2310         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2311             cpuflags="-march=$cpu"
2312             disable cmov
2313         ;;
2314         # targets that do support conditional mov (cmov)
2315         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2316             cpuflags="-march=$cpu"
2317             enable cmov
2318             enable fast_cmov
2319         ;;
2320         # targets that do support conditional mov but on which it's slow
2321         pentium4|pentium4m|prescott|nocona)
2322             cpuflags="-march=$cpu"
2323             enable cmov
2324             disable fast_cmov
2325         ;;
2326     esac
2327
2328 elif enabled sparc; then
2329
2330     case $cpu in
2331         niagara)
2332             cpuflags="-mcpu=$cpu"
2333             disable vis
2334         ;;
2335         sparc64)
2336             cpuflags="-mcpu=v9"
2337         ;;
2338     esac
2339
2340 elif enabled arm; then
2341
2342     case $cpu in
2343         armv*)
2344             cpuflags="-march=$cpu"
2345             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2346         ;;
2347         *)
2348             cpuflags="-mcpu=$cpu"
2349             case $cpu in
2350                 cortex-a*)                               subarch=armv7a  ;;
2351                 cortex-r*)                               subarch=armv7r  ;;
2352                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2353                 arm11*)                                  subarch=armv6   ;;
2354                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2355                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2356             esac
2357         ;;
2358     esac
2359
2360 elif enabled alpha; then
2361
2362     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2363
2364 elif enabled bfin; then
2365
2366     cpuflags="-mcpu=$cpu"
2367
2368 elif enabled mips; then
2369
2370     cpuflags="-march=$cpu"
2371
2372 elif enabled avr32; then
2373
2374     case $cpu in
2375         ap7[02]0[0-2])
2376             subarch="avr32_ap"
2377             cpuflags="-mpart=$cpu"
2378         ;;
2379         ap)
2380             subarch="avr32_ap"
2381             cpuflags="-march=$cpu"
2382         ;;
2383         uc3[ab]*)
2384             subarch="avr32_uc"
2385             cpuflags="-mcpu=$cpu"
2386         ;;
2387         uc)
2388             subarch="avr32_uc"
2389             cpuflags="-march=$cpu"
2390         ;;
2391     esac
2392
2393 fi
2394
2395 add_cflags $cpuflags
2396 add_asflags $cpuflags
2397
2398 # compiler sanity check
2399 check_exec <<EOF
2400 int main(void){ return 0; }
2401 EOF
2402 if test "$?" != 0; then
2403     echo "$cc is unable to create an executable file."
2404     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2405         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2406         echo "Only do this if you know what cross compiling means."
2407     fi
2408     die "C compiler test failed."
2409 fi
2410
2411 add_cppflags -D_ISOC99_SOURCE
2412 check_cflags -std=c99
2413 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2414 #include <stdlib.h>
2415 EOF
2416 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2417 #include <stdlib.h>
2418 EOF
2419
2420 check_host_cflags -std=c99
2421 check_host_cflags -Wall
2422
2423 case "$arch" in
2424     alpha|ia64|mips|parisc|sparc)
2425         spic=$shared
2426     ;;
2427     x86)
2428         subarch="x86_32"
2429         check_cc <<EOF && subarch="x86_64"
2430         int test[(int)sizeof(char*) - 7];
2431 EOF
2432         if test "$subarch" = "x86_64"; then
2433             spic=$shared
2434         fi
2435     ;;
2436 esac
2437
2438 enable $subarch
2439 enabled spic && enable pic
2440
2441 # OS specific
2442 case $target_os in
2443     haiku)
2444         prefix_default="/boot/common"
2445         network_extralibs="-lnetwork"
2446         host_libs=
2447         ;;
2448     sunos)
2449         AVSERVERLDFLAGS=""
2450         SHFLAGS='-shared -Wl,-h,$$(@F)'
2451         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2452         network_extralibs="-lsocket -lnsl"
2453         add_cppflags -D__EXTENSIONS__
2454         # When using suncc to build, the Solaris linker will mark
2455         # an executable with each instruction set encountered by
2456         # the Solaris assembler.  As our libraries contain their own
2457         # guards for processor-specific code, instead suppress
2458         # generation of the HWCAPS ELF section on Solaris x86 only.
2459         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2460         nm_opts='-P -g'
2461         ;;
2462     netbsd)
2463         disable symver
2464         oss_indev_extralibs="-lossaudio"
2465         oss_outdev_extralibs="-lossaudio"
2466         ;;
2467     openbsd)
2468         # On OpenBSD 4.5. the compiler does not use PIC unless
2469         # explicitly using -fPIC. Libav builds fine without PIC,
2470         # however the generated executable will not do anything
2471         # (simply quits with exit-code 1, no crash, no output).
2472         # Thus explicitly enable PIC here.
2473         enable pic
2474         disable symver
2475         SHFLAGS='-shared'
2476         oss_indev_extralibs="-lossaudio"
2477         oss_outdev_extralibs="-lossaudio"
2478         ;;
2479     dragonfly)
2480         disable symver
2481         ;;
2482     freebsd)
2483         ;;
2484     bsd/os)
2485         add_extralibs -lpoll -lgnugetopt
2486         ;;
2487     darwin)
2488         gas="gas-preprocessor.pl $cc"
2489         enabled ppc && add_asflags -force_cpusubtype_ALL
2490         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2491         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2492         add_ldflags -Wl,-dynamic,-search_paths_first
2493         SLIBSUF=".dylib"
2494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2496         AVSERVERLDFLAGS=-Wl,-bind_at_load
2497         objformat="macho"
2498         enabled x86_64 && objformat="macho64"
2499         enabled_any pic shared ||
2500             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2501         ;;
2502     mingw32*)
2503         if test $target_os = "mingw32ce"; then
2504             disable network
2505         else
2506             target_os=mingw32
2507         fi
2508         LIBTARGET=i386
2509         if enabled x86_64; then
2510             LIBTARGET="i386:x86-64"
2511         elif enabled arm; then
2512             LIBTARGET=arm-wince
2513         fi
2514         shlibdir_default="$bindir_default"
2515         SLIBPREF=""
2516         SLIBSUF=".dll"
2517         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2518         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2519         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2520         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2521         SLIB_INSTALL_LINKS=
2522         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2523         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2524         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2525         objformat="win32"
2526         dlltool="${cross_prefix}dlltool"
2527         enable dos_paths
2528         check_cflags -fno-common
2529         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2530                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2531                 die "ERROR: MinGW runtime version must be >= 3.15."
2532         add_cppflags -U__STRICT_ANSI__
2533         ;;
2534     cygwin*)
2535         target_os=cygwin
2536         shlibdir_default="$bindir_default"
2537         SLIBPREF="cyg"
2538         SLIBSUF=".dll"
2539         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2540         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2541         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2542         objformat="win32"
2543         enable dos_paths
2544         check_cflags -fno-common
2545         add_cppflags -U__STRICT_ANSI__
2546         ;;
2547     *-dos|freedos|opendos)
2548         network_extralibs="-lsocket"
2549         objformat="coff"
2550         enable dos_paths
2551         add_cppflags -U__STRICT_ANSI__
2552         ;;
2553     linux)
2554         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2555         enable dv1394
2556         ;;
2557     irix*)
2558         target_os=irix
2559         ranlib="echo ignoring ranlib"
2560         ;;
2561     os/2*)
2562         ln_s="cp -f"
2563         objformat="aout"
2564         add_cppflags -D_GNU_SOURCE
2565         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2566         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2567         AVSERVERLDFLAGS=""
2568         LIBSUF="_s.a"
2569         SLIBPREF=""
2570         SLIBSUF=".dll"
2571         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2572         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2573         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2574           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2575           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2576           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2577           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2578           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2579         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2580           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2581         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2582         enable dos_paths
2583         ;;
2584     gnu/kfreebsd)
2585         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2586         ;;
2587     gnu)
2588         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2589         ;;
2590     qnx)
2591         add_cppflags -D_QNX_SOURCE
2592         network_extralibs="-lsocket"
2593         ;;
2594     symbian)
2595         SLIBSUF=".dll"
2596         enable dos_paths
2597         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2598         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2599         add_ldflags -Wl,--target1-abs,--no-undefined \
2600                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2601                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2602         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2603                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2604                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2605         ;;
2606     none)
2607         ;;
2608     *)
2609         die "Unknown OS '$target_os'."
2610         ;;
2611 esac
2612
2613 esc(){
2614     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
2615 }
2616
2617 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
2618
2619 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2620
2621 set_default $PATHS_LIST
2622
2623 # we need to build at least one lib type
2624 if ! enabled_any static shared; then
2625     cat <<EOF
2626 At least one library type must be built.
2627 Specify --enable-static to build the static libraries or --enable-shared to
2628 build the shared libraries as well. To only build the shared libraries specify
2629 --disable-static in addition to --enable-shared.
2630 EOF
2631     exit 1;
2632 fi
2633
2634 die_license_disabled() {
2635     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2636 }
2637
2638 die_license_disabled gpl libcdio
2639 die_license_disabled gpl libx264
2640 die_license_disabled gpl libxavs
2641 die_license_disabled gpl libxvid
2642 die_license_disabled gpl x11grab
2643
2644 die_license_disabled nonfree libfaac
2645 die_license_disabled nonfree openssl
2646
2647 die_license_disabled version3 libopencore_amrnb
2648 die_license_disabled version3 libopencore_amrwb
2649 die_license_disabled version3 libvo_aacenc
2650 die_license_disabled version3 libvo_amrwbenc
2651
2652 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2653
2654 disabled optimizations || check_cflags -fomit-frame-pointer
2655
2656 enable_pic() {
2657     enable pic
2658     add_cppflags -DPIC
2659     add_cflags   -fPIC
2660     add_asflags  -fPIC
2661 }
2662
2663 enabled pic && enable_pic
2664
2665 check_cc <<EOF || die "Symbol mangling check failed."
2666 int ff_extern;
2667 EOF
2668 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2669 extern_prefix=${sym%%ff_extern*}
2670
2671 check_cc <<EOF && enable inline_asm
2672 void foo(void) { __asm__ volatile ("" ::); }
2673 EOF
2674
2675 _restrict=
2676 for restrict_keyword in restrict __restrict__ __restrict; do
2677     check_cc <<EOF && _restrict=$restrict_keyword && break
2678 void foo(char * $restrict_keyword p);
2679 EOF
2680 done
2681
2682 check_cc <<EOF && enable attribute_packed
2683 struct { int x; } __attribute__((packed)) x;
2684 EOF
2685
2686 check_cc <<EOF && enable attribute_may_alias
2687 union { int x; } __attribute__((may_alias)) x;
2688 EOF
2689
2690 check_cc <<EOF || die "endian test failed"
2691 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2692 EOF
2693 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2694
2695 if enabled alpha; then
2696
2697     check_cflags -mieee
2698
2699 elif enabled arm; then
2700
2701     enabled thumb && check_cflags -mthumb || check_cflags -marm
2702     nogas=die
2703
2704     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2705         enable vfp_args
2706     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2707         case "${cross_prefix:-$cc}" in
2708             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2709             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2710 __asm__ (".eabi_attribute 28, 1");
2711 int main(void) { return 0; }
2712 EOF
2713         esac
2714         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2715     fi
2716
2717     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2718     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2719     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2720     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2721     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2722     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2723
2724     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2725
2726     enabled_all armv6t2 shared !pic && enable_pic
2727
2728 elif enabled mips; then
2729
2730     check_asm loongson '"dmult.g $1, $2, $3"'
2731     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2732
2733 elif enabled ppc; then
2734
2735     enable local_aligned_8 local_aligned_16
2736
2737     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2738     check_asm ibm_asm   '"add 0, 0, 0"'
2739     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2740     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2741
2742     # AltiVec flags: The FSF version of GCC differs from the Apple version
2743     if enabled altivec; then
2744         nogas=warn
2745         check_cflags -maltivec -mabi=altivec &&
2746         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2747         check_cflags -faltivec
2748
2749         # check if our compiler supports Motorola AltiVec C API
2750         check_cc <<EOF || disable altivec
2751 $inc_altivec_h
2752 int main(void) {
2753     vector signed int v1, v2, v3;
2754     v1 = vec_add(v2,v3);
2755     return 0;
2756 }
2757 EOF
2758
2759         # check if our compiler supports braces for vector declarations
2760         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2761 $inc_altivec_h
2762 int main (void) { (vector int) {1}; return 0; }
2763 EOF
2764     fi
2765
2766 elif enabled sparc; then
2767
2768     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2769         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2770
2771 elif enabled x86; then
2772
2773     enable local_aligned_8 local_aligned_16
2774
2775     # check whether EBP is available on x86
2776     # As 'i' is stored on the stack, this program will crash
2777     # if the base pointer is used to access it because the
2778     # base pointer is cleared in the inline assembly code.
2779     check_exec_crash <<EOF && enable ebp_available
2780     volatile int i=0;
2781     __asm__ volatile (
2782         "xorl %%ebp, %%ebp"
2783     ::: "%ebp");
2784     return i;
2785 EOF
2786
2787     # check whether EBX is available on x86
2788     check_asm ebx_available '""::"b"(0)' &&
2789         check_asm ebx_available '"":::"%ebx"'
2790
2791     # check whether xmm clobbers are supported
2792     check_asm xmm_clobbers '"":::"%xmm0"'
2793
2794     # check whether binutils is new enough to compile SSSE3/MMX2
2795     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2796     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2797
2798     if ! disabled_any asm mmx yasm; then
2799         if check_cmd $yasmexe --version; then
2800             enabled x86_64 && yasm_extra="-m amd64"
2801             yasm_debug="-g dwarf2"
2802         elif check_cmd nasm -v; then
2803             yasmexe=nasm
2804             yasm_debug="-g -F dwarf"
2805             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2806         fi
2807
2808         YASMFLAGS="-f $objformat $yasm_extra"
2809         enabled pic               && append YASMFLAGS "-DPIC"
2810         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2811         case "$objformat" in
2812             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2813         esac
2814
2815         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2816             die "yasm not found, use --disable-yasm for a crippled build"
2817         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2818     fi
2819
2820     case "$cpu" in
2821         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2822             disable fast_clz
2823         ;;
2824     esac
2825
2826 fi
2827
2828 if enabled asm; then
2829     as=${gas:=$as}
2830     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2831         $nogas "GNU assembler not found, install gas-preprocessor"
2832 fi
2833
2834 check_ldflags -Wl,--as-needed
2835
2836 if check_func dlopen; then
2837     ldl=
2838 elif check_func dlopen -ldl; then
2839     ldl=-ldl
2840 fi
2841
2842 if enabled network; then
2843     check_type "sys/types.h sys/socket.h" socklen_t
2844     check_type netdb.h "struct addrinfo"
2845     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2846     check_type netinet/in.h "struct sockaddr_in6"
2847     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2848     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2849     # Prefer arpa/inet.h over winsock2
2850     if check_header arpa/inet.h ; then
2851         check_func closesocket
2852     elif check_header winsock2.h ; then
2853         check_func_headers winsock2.h closesocket -lws2 && \
2854             network_extralibs="-lws2" || \
2855         { check_func_headers winsock2.h closesocket -lws2_32 && \
2856             network_extralibs="-lws2_32"; }
2857         check_type ws2tcpip.h socklen_t
2858         check_type ws2tcpip.h "struct addrinfo"
2859         check_type ws2tcpip.h "struct ipv6_mreq"
2860         check_type ws2tcpip.h "struct sockaddr_in6"
2861         check_type ws2tcpip.h "struct sockaddr_storage"
2862         check_struct winsock2.h "struct sockaddr" sa_len
2863     else
2864         disable network
2865     fi
2866 fi
2867
2868 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2869 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2870
2871 check_func  fcntl
2872 check_func  fork
2873 check_func  getaddrinfo $network_extralibs
2874 check_func  gethrtime
2875 check_func  getrusage
2876 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2877 check_func  inet_aton $network_extralibs
2878 check_func  isatty
2879 check_func  localtime_r
2880 check_func  ${malloc_prefix}memalign            && enable memalign
2881 check_func  mkstemp
2882 check_func  mmap
2883 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2884 check_func  setrlimit
2885 check_func  strerror_r
2886 check_func  strptime
2887 check_func  strtok_r
2888 check_func  sched_getaffinity
2889 check_func  sysconf
2890 check_func  sysctl
2891 check_func_headers io.h setmode
2892 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2893 check_func_headers windows.h GetProcessAffinityMask
2894 check_func_headers windows.h GetProcessTimes
2895 check_func_headers windows.h MapViewOfFile
2896 check_func_headers windows.h VirtualAlloc
2897
2898 check_header dlfcn.h
2899 check_header dxva2api.h
2900 check_header malloc.h
2901 check_header poll.h
2902 check_header sys/mman.h
2903 check_header sys/param.h
2904 check_header sys/resource.h
2905 check_header sys/select.h
2906 check_header vdpau/vdpau.h
2907 check_header vdpau/vdpau_x11.h
2908 check_header X11/extensions/XvMClib.h
2909
2910 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2911 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2912
2913 if ! disabled w32threads && ! enabled pthreads; then
2914     check_func _beginthreadex && enable w32threads
2915 fi
2916
2917 # check for some common methods of building with pthread support
2918 # do this before the optional library checks as some of them require pthreads
2919 if ! disabled pthreads && ! enabled w32threads; then
2920     enable pthreads
2921     if check_func pthread_create; then
2922         :
2923     elif check_func pthread_create -pthread; then
2924         add_cflags -pthread
2925         add_extralibs -pthread
2926     elif check_func pthread_create -pthreads; then
2927         add_cflags -pthreads
2928         add_extralibs -pthreads
2929     elif check_func pthread_create -lpthreadGC2; then
2930         add_extralibs -lpthreadGC2
2931     elif ! check_lib pthread.h pthread_create -lpthread; then
2932         disable pthreads
2933     fi
2934 fi
2935
2936 for thread in $THREADS_LIST; do
2937     if enabled $thread; then
2938         test -n "$thread_type" &&
2939             die "ERROR: Only one thread type must be selected." ||
2940             thread_type="$thread"
2941     fi
2942 done
2943
2944 check_lib math.h sin -lm && LIBM="-lm"
2945 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2946
2947 check_mathfunc exp2
2948 check_mathfunc exp2f
2949 check_mathfunc llrint
2950 check_mathfunc llrintf
2951 check_mathfunc log2
2952 check_mathfunc log2f
2953 check_mathfunc lrint
2954 check_mathfunc lrintf
2955 check_mathfunc round
2956 check_mathfunc roundf
2957 check_mathfunc trunc
2958 check_mathfunc truncf
2959
2960 # these are off by default, so fail if requested and not available
2961 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2962 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2963 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
2964 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2965 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2966 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2967 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2968 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2969 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2970 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2971 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2972 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2973 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
2974 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2975 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2976 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2977 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2978 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2979 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2980 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2981 enabled libvpx     && {
2982     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2983                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2984     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2985                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2986 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2987                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2988                         die "ERROR: libx264 version must be >= 0.118."; }
2989 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2990 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2991 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
2992                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
2993                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
2994                         die "ERROR: openssl not found"; }
2995
2996 # libdc1394 check
2997 if enabled libdc1394; then
2998     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2999         enable libdc1394_2; } ||
3000     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3001         enable libdc1394_1; } ||
3002     die "ERROR: No version of libdc1394 found "
3003 fi
3004
3005 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3006     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3007     enable sdl &&
3008     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3009 fi
3010
3011 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3012
3013 check_header linux/fb.h
3014 check_header linux/videodev2.h
3015 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3016
3017 check_header sys/videoio.h
3018
3019 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3020 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3021 # w32api 3.12 had it defined wrong
3022 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3023
3024 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3025 { check_header dev/bktr/ioctl_meteor.h &&
3026   check_header dev/bktr/ioctl_bt848.h; } ||
3027 { check_header machine/ioctl_meteor.h &&
3028   check_header machine/ioctl_bt848.h; } ||
3029 { check_header dev/video/meteor/ioctl_meteor.h &&
3030   check_header dev/video/bktr/ioctl_bt848.h; } ||
3031 check_header dev/ic/bt8xx.h
3032
3033 check_header sndio.h
3034 check_header sys/soundcard.h
3035 check_header soundcard.h
3036
3037 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3038
3039 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
3040
3041 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3042
3043 enabled libcdio &&
3044     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3045
3046 enabled x11grab                                           &&
3047 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3048 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3049 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3050
3051 # check for VDA header
3052 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3053     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3054 fi
3055
3056 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3057 check_cpp_condition \
3058     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3059     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3060       disable vdpau; }
3061 fi
3062
3063 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3064
3065 # add some useful compiler flags if supported
3066 check_cflags -Wdeclaration-after-statement
3067 check_cflags -Wall
3068 check_cflags -Wno-parentheses
3069 check_cflags -Wno-switch
3070 check_cflags -Wno-format-zero-length
3071 check_cflags -Wdisabled-optimization
3072 check_cflags -Wpointer-arith
3073 check_cflags -Wredundant-decls
3074 check_cflags -Wno-pointer-sign
3075 check_cflags -Wcast-qual
3076 check_cflags -Wwrite-strings
3077 check_cflags -Wtype-limits
3078 check_cflags -Wundef
3079 check_cflags -Wmissing-prototypes
3080 check_cflags -Wstrict-prototypes
3081 enabled extra_warnings && check_cflags -Winline
3082
3083 # add some linker flags
3084 check_ldflags -Wl,--warn-common
3085 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3086 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3087
3088 enabled xmm_clobber_test &&                             \
3089     check_ldflags -Wl,--wrap,avcodec_open2              \
3090                   -Wl,--wrap,avcodec_decode_audio4      \
3091                   -Wl,--wrap,avcodec_decode_video2      \
3092                   -Wl,--wrap,avcodec_decode_subtitle2   \
3093                   -Wl,--wrap,avcodec_encode_audio2      \
3094                   -Wl,--wrap,avcodec_encode_video       \
3095                   -Wl,--wrap,avcodec_encode_subtitle    \
3096                   -Wl,--wrap,sws_scale ||               \
3097     disable xmm_clobber_test
3098
3099 echo "X{};" > $TMPV
3100 if test_ldflags -Wl,--version-script,$TMPV; then
3101     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3102     check_cc <<EOF && enable symver_asm_label
3103 void ff_foo(void) __asm__ ("av_foo@VERSION");
3104 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3105 EOF
3106     check_cc <<EOF && enable symver_gnu_asm
3107 __asm__(".symver ff_foo,av_foo@VERSION");
3108 void ff_foo(void) {}
3109 EOF
3110 fi
3111
3112 if [ -n "$optflags" ]; then
3113     add_cflags $optflags
3114 elif enabled small; then
3115     add_cflags $size_cflags
3116 elif enabled optimizations; then
3117     add_cflags $speed_cflags
3118 else
3119     add_cflags $noopt_cflags
3120 fi
3121 check_cflags -fno-math-errno
3122 check_cflags -fno-signed-zeros
3123
3124 if enabled icc; then
3125     # Just warnings, no remarks
3126     check_cflags -w1
3127     # -wd: Disable following warnings
3128     # 144, 167, 556: -Wno-pointer-sign
3129     # 1292: attribute "foo" ignored
3130     # 1419: external declaration in primary source file
3131     # 10006: ignoring unknown option -fno-signed-zeros
3132     # 10148: ignoring unknown option -Wno-parentheses
3133     # 10156: ignoring option '-W'; no argument required
3134     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3135     # 11030: Warning unknown option --as-needed
3136     # 10156: ignoring option '-export'; no argument required
3137     check_ldflags -wd10156,11030
3138     # Allow to compile with optimizations
3139     check_ldflags -march=$cpu
3140     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3141     enable ebp_available
3142     if enabled x86_32; then
3143         test ${icc_version%%.*} -ge 11 && \
3144             check_cflags -falign-stack=maintain-16-byte || \
3145             disable aligned_stack
3146     fi
3147 elif enabled ccc; then
3148     # disable some annoying warnings
3149     add_cflags -msg_disable cvtu32to64
3150     add_cflags -msg_disable embedcomment
3151     add_cflags -msg_disable needconstext
3152     add_cflags -msg_disable nomainieee
3153     add_cflags -msg_disable ptrmismatch1
3154     add_cflags -msg_disable unreachcode
3155 elif enabled gcc; then
3156     check_cflags -fno-tree-vectorize
3157     check_cflags -Werror=implicit-function-declaration
3158     check_cflags -Werror=missing-prototypes
3159     check_cflags -Werror=declaration-after-statement
3160 elif enabled llvm_gcc; then
3161     check_cflags -mllvm -stack-alignment=16
3162 elif enabled clang; then
3163     check_cflags -mllvm -stack-alignment=16
3164     check_cflags -Qunused-arguments
3165 elif enabled armcc; then
3166     # 2523: use of inline assembler is deprecated
3167     add_cflags -W${armcc_opt},--diag_suppress=2523
3168     add_cflags -W${armcc_opt},--diag_suppress=1207
3169     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3170     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3171     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3172     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3173 elif enabled tms470; then
3174     add_cflags -pds=824 -pds=837
3175 elif enabled pathscale; then
3176     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3177 fi
3178
3179 enabled_any $THREADS_LIST      && enable threads
3180
3181 check_deps $CONFIG_LIST       \
3182            $CONFIG_EXTRA      \
3183            $HAVE_LIST         \
3184            $ALL_COMPONENTS    \
3185            $ALL_TESTS         \
3186
3187 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3188
3189 ! enabled_any memalign posix_memalign &&
3190     enabled_any $need_memalign && enable memalign_hack
3191
3192 echo "install prefix            $prefix"
3193 echo "source path               $source_path"
3194 echo "C compiler                $cc"
3195 echo "ARCH                      $arch ($cpu)"
3196 if test "$build_suffix" != ""; then
3197     echo "build suffix              $build_suffix"
3198 fi
3199 if test "$extra_version" != ""; then
3200     echo "version string suffix     $extra_version"
3201 fi
3202 echo "big-endian                ${bigendian-no}"
3203 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3204 if enabled x86; then
3205     echo "${yasmexe}                      ${yasm-no}"
3206     echo "MMX enabled               ${mmx-no}"
3207     echo "MMX2 enabled              ${mmx2-no}"
3208     echo "3DNow! enabled            ${amd3dnow-no}"
3209     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3210     echo "SSE enabled               ${sse-no}"
3211     echo "SSSE3 enabled             ${ssse3-no}"
3212     echo "AVX enabled               ${avx-no}"
3213     echo "CMOV enabled              ${cmov-no}"
3214     echo "CMOV is fast              ${fast_cmov-no}"
3215     echo "EBX available             ${ebx_available-no}"
3216     echo "EBP available             ${ebp_available-no}"
3217 fi
3218 if enabled arm; then
3219     echo "ARMv5TE enabled           ${armv5te-no}"
3220     echo "ARMv6 enabled             ${armv6-no}"
3221     echo "ARMv6T2 enabled           ${armv6t2-no}"
3222     echo "ARM VFP enabled           ${armvfp-no}"
3223     echo "NEON enabled              ${neon-no}"
3224 fi
3225 if enabled mips; then
3226     echo "MMI enabled               ${mmi-no}"
3227 fi
3228 if enabled ppc; then
3229     echo "AltiVec enabled           ${altivec-no}"
3230     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3231     echo "dcbzl available           ${dcbzl-no}"
3232 fi
3233 if enabled sparc; then
3234     echo "VIS enabled               ${vis-no}"
3235 fi
3236 echo "debug symbols             ${debug-no}"
3237 echo "optimize for size         ${small-no}"
3238 echo "optimizations             ${optimizations-no}"
3239 echo "static                    ${static-no}"
3240 echo "shared                    ${shared-no}"
3241 echo "new filter support        ${avfilter-no}"
3242 echo "network support           ${network-no}"
3243 echo "threading support         ${thread_type-no}"
3244 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3245 echo "SDL support               ${sdl-no}"
3246 echo "libdxva2 enabled          ${dxva2-no}"
3247 echo "libva enabled             ${vaapi-no}"
3248 echo "libvdpau enabled          ${vdpau-no}"
3249 echo "AVISynth enabled          ${avisynth-no}"
3250 echo "frei0r enabled            ${frei0r-no}"
3251 echo "gnutls enabled            ${gnutls-no}"
3252 echo "libcdio support           ${libcdio-no}"
3253 echo "libdc1394 support         ${libdc1394-no}"
3254 echo "libfaac enabled           ${libfaac-no}"
3255 echo "libgsm enabled            ${libgsm-no}"
3256 echo "libmp3lame enabled        ${libmp3lame-no}"
3257 echo "libnut enabled            ${libnut-no}"
3258 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3259 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3260 echo "libopencv support         ${libopencv-no}"
3261 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3262 echo "libpulse enabled          ${libpulse-no}"
3263 echo "librtmp enabled           ${librtmp-no}"
3264 echo "libschroedinger enabled   ${libschroedinger-no}"
3265 echo "libspeex enabled          ${libspeex-no}"
3266 echo "libtheora enabled         ${libtheora-no}"
3267 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3268 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3269 echo "libvorbis enabled         ${libvorbis-no}"
3270 echo "libvpx enabled            ${libvpx-no}"
3271 echo "libx264 enabled           ${libx264-no}"
3272 echo "libxavs enabled           ${libxavs-no}"
3273 echo "libxvid enabled           ${libxvid-no}"
3274 echo "openssl enabled           ${openssl-no}"
3275 echo "zlib enabled              ${zlib-no}"
3276 echo "bzlib enabled             ${bzlib-no}"
3277 echo
3278
3279 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3280     echo "Enabled ${type}s:"
3281     eval list=\$$(toupper $type)_LIST
3282     print_enabled '_*' $list | sort | pr -r -3 -t
3283     echo
3284 done
3285
3286 license="LGPL version 2.1 or later"
3287 if enabled nonfree; then
3288     license="nonfree and unredistributable"
3289 elif enabled gplv3; then
3290     license="GPL version 3 or later"
3291 elif enabled lgplv3; then
3292     license="LGPL version 3 or later"
3293 elif enabled gpl; then
3294     license="GPL version 2 or later"
3295 fi
3296
3297 echo "License: $license"
3298
3299 echo "Creating config.mak and config.h..."
3300
3301 test -e Makefile || $ln_s "$source_path/Makefile" .
3302
3303 config_files="$TMPH config.mak"
3304
3305 cat > config.mak <<EOF
3306 # Automatically generated by configure - do not modify!
3307 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3308 prefix=$prefix
3309 LIBDIR=\$(DESTDIR)$libdir
3310 SHLIBDIR=\$(DESTDIR)$shlibdir
3311 INCDIR=\$(DESTDIR)$incdir
3312 BINDIR=\$(DESTDIR)$bindir
3313 DATADIR=\$(DESTDIR)$datadir
3314 MANDIR=\$(DESTDIR)$mandir
3315 SRC_PATH=$source_path
3316 CC_IDENT=$cc_ident
3317 ARCH=$arch
3318 CC=$cc
3319 AS=$as
3320 LD=$ld
3321 DEPCC=$dep_cc
3322 YASM=$yasmexe
3323 YASMDEP=$yasmexe
3324 AR=$ar
3325 RANLIB=$ranlib
3326 LN_S=$ln_s
3327 CPPFLAGS=$CPPFLAGS
3328 CFLAGS=$CFLAGS
3329 ASFLAGS=$ASFLAGS
3330 AS_O=$CC_O
3331 CC_O=$CC_O
3332 DLLTOOL=$dlltool
3333 LDFLAGS=$LDFLAGS
3334 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3335 SHFLAGS=$SHFLAGS
3336 YASMFLAGS=$YASMFLAGS
3337 BUILDSUF=$build_suffix
3338 FULLNAME=$FULLNAME
3339 LIBPREF=$LIBPREF
3340 LIBSUF=$LIBSUF
3341 LIBNAME=$LIBNAME
3342 SLIBPREF=$SLIBPREF
3343 SLIBSUF=$SLIBSUF
3344 EXESUF=$EXESUF
3345 EXTRA_VERSION=$extra_version
3346 DEPFLAGS=$DEPFLAGS
3347 CCDEP=$CCDEP
3348 ASDEP=$ASDEP
3349 CC_DEPFLAGS=$CC_DEPFLAGS
3350 AS_DEPFLAGS=$AS_DEPFLAGS
3351 HOSTCC=$host_cc
3352 HOSTCFLAGS=$host_cflags
3353 HOSTEXESUF=$HOSTEXESUF
3354 HOSTLDFLAGS=$host_ldflags
3355 HOSTLIBS=$host_libs
3356 TARGET_EXEC=$target_exec
3357 TARGET_PATH=$target_path
3358 SDL_LIBS=$sdl_libs
3359 SDL_CFLAGS=$sdl_cflags
3360 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3361 EXTRALIBS=$extralibs
3362 INSTALL=install
3363 LIBTARGET=${LIBTARGET}
3364 SLIBNAME=${SLIBNAME}
3365 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3366 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3367 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3368 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3369 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3370 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3371 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3372 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3373 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3374 EOF
3375
3376 get_version(){
3377     name=$1
3378     file=$source_path/$2
3379     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3380     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3381     lcname=$(tolower $name)
3382     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3383     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3384 }
3385
3386 get_version LIBAVCODEC  libavcodec/version.h
3387 get_version LIBAVDEVICE libavdevice/avdevice.h
3388 get_version LIBAVFILTER libavfilter/version.h
3389 get_version LIBAVFORMAT libavformat/version.h
3390 get_version LIBAVRESAMPLE libavresample/version.h
3391 get_version LIBAVUTIL   libavutil/avutil.h
3392 get_version LIBSWSCALE  libswscale/swscale.h
3393
3394 cat > $TMPH <<EOF
3395 /* Automatically generated by configure - do not modify! */
3396 #ifndef LIBAV_CONFIG_H
3397 #define LIBAV_CONFIG_H
3398 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3399 #define LIBAV_LICENSE "$(c_escape $license)"
3400 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3401 #define CC_TYPE "$cc_type"
3402 #define CC_VERSION $cc_version
3403 #define restrict $_restrict
3404 #define EXTERN_PREFIX "${extern_prefix}"
3405 #define EXTERN_ASM ${extern_prefix}
3406 #define SLIBSUF "$SLIBSUF"
3407 EOF
3408
3409 test -n "$malloc_prefix" &&
3410     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3411
3412 if enabled small || disabled optimizations; then
3413     echo "#undef  av_always_inline"  >> $TMPH
3414     if enabled small; then
3415         echo "#define av_always_inline inline"  >> $TMPH
3416     else
3417         echo "#define av_always_inline av_unused"  >> $TMPH
3418     fi
3419 fi
3420
3421 if enabled yasm; then
3422     append config_files $TMPASM
3423     printf '' >$TMPASM
3424 fi
3425
3426 print_config ARCH_   "$config_files" $ARCH_LIST
3427 print_config HAVE_   "$config_files" $HAVE_LIST
3428 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3429                                      $CONFIG_EXTRA      \
3430                                      $ALL_COMPONENTS    \
3431
3432 cat >>config.mak <<EOF
3433 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3434 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3435 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3436 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3437 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3438 EOF
3439
3440 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3441
3442 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3443 cp_if_changed $TMPH config.h
3444 touch .config
3445
3446 enabled yasm && cp_if_changed $TMPASM config.asm
3447
3448 cat > $TMPH <<EOF
3449 /* Generated by ffconf */
3450 #ifndef AVUTIL_AVCONFIG_H
3451 #define AVUTIL_AVCONFIG_H
3452 EOF
3453
3454 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3455
3456 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3457
3458 cp_if_changed $TMPH libavutil/avconfig.h
3459
3460 test -n "$WARNINGS" && printf "\n$WARNINGS"
3461
3462 # build pkg-config files
3463
3464 pkgconfig_generate(){
3465 name=$1
3466 shortname=${name#lib}${build_suffix}
3467 comment=$2
3468 version=$3
3469 libs=$4
3470 requires=$5
3471 enabled ${name#lib} || return 0
3472 mkdir -p $name
3473 cat <<EOF > $name/$name.pc
3474 prefix=$prefix
3475 exec_prefix=\${prefix}
3476 libdir=$libdir
3477 includedir=$incdir
3478
3479 Name: $name
3480 Description: $comment
3481 Version: $version
3482 Requires: $(enabled shared || echo $requires)
3483 Requires.private: $(enabled shared && echo $requires)
3484 Conflicts:
3485 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3486 Libs.private: $(enabled shared && echo $libs)
3487 Cflags: -I\${includedir}
3488 EOF
3489 cat <<EOF > $name/$name-uninstalled.pc
3490 prefix=
3491 exec_prefix=
3492 libdir=\${pcfiledir}
3493 includedir=${source_path}
3494
3495 Name: $name
3496 Description: $comment
3497 Version: $version
3498 Requires: $requires
3499 Conflicts:
3500 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3501 Cflags: -I\${includedir}
3502 EOF
3503 }
3504
3505 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3506 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3507 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3508 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3509 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3510 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
3511 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"