a73d6669679f6d863a7b1384305beef9de66e4f2
[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-pthreads       disable pthreads [auto]
114   --disable-w32threads     disable Win32 threads [auto]
115   --enable-x11grab         enable X11 grabbing [no]
116   --disable-network        disable network support [no]
117   --disable-dct            disable DCT code
118   --disable-mdct           disable MDCT code
119   --disable-rdft           disable RDFT code
120   --disable-fft            disable FFT code
121   --enable-dxva2           enable DXVA2 code
122   --enable-vaapi           enable VAAPI code
123   --enable-vda             enable VDA code
124   --enable-vdpau           enable VDPAU code
125
126 Individual component options:
127   --disable-everything     disable all components listed below
128   --disable-encoder=NAME   disable encoder NAME
129   --enable-encoder=NAME    enable encoder NAME
130   --disable-encoders       disable all encoders
131   --disable-decoder=NAME   disable decoder NAME
132   --enable-decoder=NAME    enable decoder NAME
133   --disable-decoders       disable all decoders
134   --disable-hwaccel=NAME   disable hwaccel NAME
135   --enable-hwaccel=NAME    enable hwaccel NAME
136   --disable-hwaccels       disable all hwaccels
137   --disable-muxer=NAME     disable muxer NAME
138   --enable-muxer=NAME      enable muxer NAME
139   --disable-muxers         disable all muxers
140   --disable-demuxer=NAME   disable demuxer NAME
141   --enable-demuxer=NAME    enable demuxer NAME
142   --disable-demuxers       disable all demuxers
143   --enable-parser=NAME     enable parser NAME
144   --disable-parser=NAME    disable parser NAME
145   --disable-parsers        disable all parsers
146   --enable-bsf=NAME        enable bitstream filter NAME
147   --disable-bsf=NAME       disable bitstream filter NAME
148   --disable-bsfs           disable all bitstream filters
149   --enable-protocol=NAME   enable protocol NAME
150   --disable-protocol=NAME  disable protocol NAME
151   --disable-protocols      disable all protocols
152   --enable-indev=NAME      enable input device NAME
153   --disable-indev=NAME     disable input device NAME
154   --disable-indevs         disable input devices
155   --enable-outdev=NAME     enable output device NAME
156   --disable-outdev=NAME    disable output device NAME
157   --disable-outdevs        disable output devices
158   --disable-devices        disable all devices
159   --enable-filter=NAME     enable filter NAME
160   --disable-filter=NAME    disable filter NAME
161   --disable-filters        disable all filters
162
163 External library support:
164   --enable-avisynth        enable reading of AVISynth script files [no]
165   --enable-bzlib           enable bzlib [autodetect]
166   --enable-frei0r          enable frei0r video filtering
167   --enable-gnutls          enable gnutls [no]
168   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
169   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
170   --enable-libopencv       enable video filtering via libopencv [no]
171   --enable-libcdio         enable audio CD grabbing with libcdio
172   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
173                            and libraw1394 [no]
174   --enable-libfaac         enable FAAC support via libfaac [no]
175   --enable-libfreetype     enable libfreetype [no]
176   --enable-libgsm          enable GSM support via libgsm [no]
177   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
178   --enable-libnut          enable NUT (de)muxing via libnut,
179                            native (de)muxer exists [no]
180   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
181   --enable-libpulse        enable Pulseaudio input via libpulse [no]
182   --enable-librtmp         enable RTMP[E] support via librtmp [no]
183   --enable-libschroedinger enable Dirac support via libschroedinger [no]
184   --enable-libspeex        enable Speex support via libspeex [no]
185   --enable-libtheora       enable Theora encoding via libtheora [no]
186   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
187   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
188   --enable-libvorbis       enable Vorbis encoding via libvorbis,
189                            native implementation exists [no]
190   --enable-libvpx          enable VP8 support via libvpx [no]
191   --enable-libx264         enable H.264 encoding via x264 [no]
192   --enable-libxavs         enable AVS encoding via xavs [no]
193   --enable-libxvid         enable Xvid encoding via xvidcore,
194                            native MPEG-4/Xvid encoder exists [no]
195   --enable-openssl         enable openssl [no]
196   --enable-zlib            enable zlib [autodetect]
197
198 Advanced options (experts only):
199   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
200   --enable-cross-compile   assume a cross-compiler is used
201   --sysroot=PATH           root of cross-build tree
202   --sysinclude=PATH        location of cross-build system headers
203   --target-os=OS           compiler targets OS [$target_os]
204   --target-exec=CMD        command to run executables on target
205   --target-path=DIR        path to view of build directory on target
206   --nm=NM                  use nm tool
207   --ar=AR                  use archive tool AR [$ar_default]
208   --as=AS                  use assembler AS [$as_default]
209   --cc=CC                  use C compiler CC [$cc_default]
210   --ld=LD                  use linker LD
211   --host-cc=HOSTCC         use host C compiler HOSTCC
212   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
213   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
214   --host-libs=HLIBS        use libs HLIBS when linking for host
215   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
216   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
217   --extra-libs=ELIBS       add ELIBS [$ELIBS]
218   --extra-version=STRING   version string suffix []
219   --optflags               override optimization-related compiler flags
220   --build-suffix=SUFFIX    library name suffix []
221   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
222   --arch=ARCH              select architecture [$arch]
223   --cpu=CPU                select the minimum required CPU (affects
224                            instruction selection, may crash on older CPUs)
225   --enable-pic             build position-independent code
226   --enable-sram            allow use of on-chip SRAM
227   --disable-symver         disable symbol versioning
228   --disable-fastdiv        disable table-based division
229   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
230   --disable-safe-bitstream-reader
231                            disable buffer boundary checking in bitreaders
232                            (faster, but may crash)
233   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
234
235 Optimization options (experts only):
236   --disable-asm            disable all assembler optimizations
237   --disable-altivec        disable AltiVec optimizations
238   --disable-amd3dnow       disable 3DNow! optimizations
239   --disable-amd3dnowext    disable 3DNow! extended optimizations
240   --disable-mmx            disable MMX optimizations
241   --disable-mmx2           disable MMX2 optimizations
242   --disable-sse            disable SSE optimizations
243   --disable-ssse3          disable SSSE3 optimizations
244   --disable-avx            disable AVX optimizations
245   --disable-armv5te        disable armv5te optimizations
246   --disable-armv6          disable armv6 optimizations
247   --disable-armv6t2        disable armv6t2 optimizations
248   --disable-armvfp         disable ARM VFP optimizations
249   --disable-mmi            disable MMI optimizations
250   --disable-neon           disable NEON optimizations
251   --disable-vis            disable VIS optimizations
252   --disable-yasm           disable use of yasm assembler
253
254 Developer options (useful when working on Libav itself):
255   --disable-debug          disable debugging symbols
256   --enable-debug=LEVEL     set the debug level [$debuglevel]
257   --disable-optimizations  disable compiler optimizations
258   --enable-extra-warnings  enable more compiler warnings
259   --samples=PATH           location of test samples for FATE, if not set use
260                            \$FATE_SAMPLES at make invocation time.
261   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
262                            should be used only for debugging purposes)
263
264 NOTE: Object files are built at the place where configure is launched.
265 EOF
266   exit 0
267 }
268
269 quotes='""'
270
271 log(){
272     echo "$@" >> $logfile
273 }
274
275 log_file(){
276     log BEGIN $1
277     pr -n -t $1 >> $logfile
278     log END $1
279 }
280
281 echolog(){
282     log "$@"
283     echo "$@"
284 }
285
286 warn(){
287     log "WARNING: $*"
288     WARNINGS="${WARNINGS}WARNING: $*\n"
289 }
290
291 die(){
292     echolog "$@"
293     cat <<EOF
294
295 If you think configure made a mistake, make sure you are using the latest
296 version from Git.  If the latest version fails, report the problem to the
297 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
298 EOF
299     if disabled logging; then
300         cat <<EOF
301 Rerun configure with logging enabled (do not use --disable-logging), and
302 include the log this produces with your report.
303 EOF
304     else
305 cat <<EOF
306 Include the log file "$logfile" produced by configure as this will help
307 solving the problem.
308 EOF
309     fi
310     exit 1
311 }
312
313 # Avoid locale weirdness, besides we really just want to translate ASCII.
314 toupper(){
315     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
316 }
317
318 tolower(){
319     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
320 }
321
322 c_escape(){
323     echo "$*" | sed 's/["\\]/\\\0/g'
324 }
325
326 sh_quote(){
327     v=$(echo "$1" | sed "s/'/'\\\\''/g")
328     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
329     echo "$v"
330 }
331
332 cleanws(){
333     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
334 }
335
336 filter(){
337     pat=$1
338     shift
339     for v; do
340         eval "case $v in $pat) echo $v ;; esac"
341     done
342 }
343
344 filter_out(){
345     pat=$1
346     shift
347     for v; do
348         eval "case $v in $pat) ;; *) echo $v ;; esac"
349     done
350 }
351
352 map(){
353     m=$1
354     shift
355     for v; do eval $m; done
356 }
357
358 set_all(){
359     value=$1
360     shift
361     for var in $*; do
362         eval $var=$value
363     done
364 }
365
366 set_weak(){
367     value=$1
368     shift
369     for var; do
370         eval : \${$var:=$value}
371     done
372 }
373
374 set_safe(){
375     var=$1
376     shift
377     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
378 }
379
380 get_safe(){
381     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
382 }
383
384 pushvar(){
385     for var in $*; do
386         eval level=\${${var}_level:=0}
387         eval ${var}_${level}="\$$var"
388         eval ${var}_level=$(($level+1))
389     done
390 }
391
392 popvar(){
393     for var in $*; do
394         eval level=\${${var}_level:-0}
395         test $level = 0 && continue
396         eval level=$(($level-1))
397         eval $var="\${${var}_${level}}"
398         eval ${var}_level=$level
399         eval unset ${var}_${level}
400     done
401 }
402
403 enable(){
404     set_all yes $*
405 }
406
407 disable(){
408     set_all no $*
409 }
410
411 enable_weak(){
412     set_weak yes $*
413 }
414
415 disable_weak(){
416     set_weak no $*
417 }
418
419 enable_safe(){
420     for var; do
421         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
422     done
423 }
424
425 disable_safe(){
426     for var; do
427         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
428     done
429 }
430
431 do_enable_deep(){
432     for var; do
433         enabled $var && continue
434         eval sel="\$${var}_select"
435         eval sgs="\$${var}_suggest"
436         pushvar var sgs
437         enable_deep $sel
438         popvar sgs
439         enable_deep_weak $sgs
440         popvar var
441     done
442 }
443
444 enable_deep(){
445     do_enable_deep $*
446     enable $*
447 }
448
449 enable_deep_weak(){
450     do_enable_deep $*
451     enable_weak $*
452 }
453
454 enabled(){
455     test "${1#!}" = "$1" && op== || op=!=
456     eval test "x\$${1#!}" $op "xyes"
457 }
458
459 disabled(){
460     test "${1#!}" = "$1" && op== || op=!=
461     eval test "x\$${1#!}" $op "xno"
462 }
463
464 enabled_all(){
465     for opt; do
466         enabled $opt || return 1
467     done
468 }
469
470 disabled_all(){
471     for opt; do
472         disabled $opt || return 1
473     done
474 }
475
476 enabled_any(){
477     for opt; do
478         enabled $opt && return 0
479     done
480 }
481
482 disabled_any(){
483     for opt; do
484         disabled $opt && return 0
485     done
486     return 1
487 }
488
489 set_default(){
490     for opt; do
491         eval : \${$opt:=\$${opt}_default}
492     done
493 }
494
495 is_in(){
496     value=$1
497     shift
498     for var in $*; do
499         [ $var = $value ] && return 0
500     done
501     return 1
502 }
503
504 check_deps(){
505     for cfg; do
506         cfg="${cfg#!}"
507         enabled ${cfg}_checking && die "Circular dependency for $cfg."
508         disabled ${cfg}_checking && continue
509         enable ${cfg}_checking
510
511         eval dep_all="\$${cfg}_deps"
512         eval dep_any="\$${cfg}_deps_any"
513         eval dep_sel="\$${cfg}_select"
514         eval dep_sgs="\$${cfg}_suggest"
515         eval dep_ifa="\$${cfg}_if"
516         eval dep_ifn="\$${cfg}_if_any"
517
518         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
519         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
520         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
521
522         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
523         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
524         enabled_all  $dep_all || disable $cfg
525         enabled_any  $dep_any || disable $cfg
526         disabled_any $dep_sel && disable $cfg
527
528         if enabled $cfg; then
529             eval dep_extralibs="\$${cfg}_extralibs"
530             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
531             enable_deep $dep_sel
532             enable_deep_weak $dep_sgs
533         fi
534
535         disable ${cfg}_checking
536     done
537 }
538
539 print_config_h(){
540     enabled $1 && v=1 || v=0
541     echo "#define $2 $v"
542 }
543
544 print_config_mak(){
545     enabled $1 && v= || v=!
546     echo "$v$2=yes"
547 }
548
549 print_config_asm(){
550     enabled $1 && v=1 || v=0
551     echo "%define $2 $v"
552 }
553
554 print_config(){
555     pfx=$1
556     files=$2
557     shift 2
558     for cfg; do
559         ucname="$(toupper $cfg)"
560         for f in $files; do
561             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
562         done
563     done
564 }
565
566 print_enabled(){
567     test "$1" = -n && end=" " && shift || end="\n"
568     suf=$1
569     shift
570     for v; do
571         enabled $v && printf "%s$end" ${v%$suf};
572     done
573 }
574
575 append(){
576     var=$1
577     shift
578     eval "$var=\"\$$var $*\""
579 }
580
581 prepend(){
582     var=$1
583     shift
584     eval "$var=\"$* \$$var\""
585 }
586
587 add_cppflags(){
588     append CPPFLAGS $($filter_cppflags "$@")
589 }
590
591 add_cflags(){
592     append CFLAGS $($filter_cflags "$@")
593 }
594
595 add_asflags(){
596     append ASFLAGS $($filter_asflags "$@")
597 }
598
599 add_ldflags(){
600     append LDFLAGS "$@"
601 }
602
603 add_extralibs(){
604     prepend extralibs "$@"
605 }
606
607 check_cmd(){
608     log "$@"
609     "$@" >> $logfile 2>&1
610 }
611
612 check_cc(){
613     log check_cc "$@"
614     cat > $TMPC
615     log_file $TMPC
616     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
617 }
618
619 check_cpp(){
620     log check_cpp "$@"
621     cat > $TMPC
622     log_file $TMPC
623     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
624 }
625
626 check_as(){
627     log check_as "$@"
628     cat > $TMPC
629     log_file $TMPC
630     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
631 }
632
633 check_asm(){
634     log check_asm "$@"
635     name="$1"
636     code="$2"
637     shift 2
638     disable $name
639     check_as "$@" <<EOF && enable $name
640 void foo(void){ __asm__ volatile($code); }
641 EOF
642 }
643
644 check_yasm(){
645     log check_yasm "$@"
646     echo "$1" > $TMPS
647     log_file $TMPS
648     shift 1
649     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
650 }
651
652 check_ld(){
653     log check_ld "$@"
654     flags=''
655     libs=''
656     for f; do
657         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
658     done
659     check_cc $($filter_cflags $flags) || return
660     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
661 }
662
663 check_cppflags(){
664     log check_cppflags "$@"
665     set -- $($filter_cppflags "$@")
666     check_cc "$@" <<EOF && append CPPFLAGS "$@"
667 int x;
668 EOF
669 }
670
671 check_cflags(){
672     log check_cflags "$@"
673     set -- $($filter_cflags "$@")
674     check_cc "$@" <<EOF && append CFLAGS "$@"
675 int x;
676 EOF
677 }
678
679 test_ldflags(){
680     log test_ldflags "$@"
681     check_ld "$@" <<EOF
682 int main(void){ return 0; }
683 EOF
684 }
685
686 check_ldflags(){
687     log check_ldflags "$@"
688     test_ldflags "$@" && add_ldflags "$@"
689 }
690
691 check_header(){
692     log check_header "$@"
693     header=$1
694     shift
695     disable_safe $header
696     check_cpp "$@" <<EOF && enable_safe $header
697 #include <$header>
698 int x;
699 EOF
700 }
701
702 check_func(){
703     log check_func "$@"
704     func=$1
705     shift
706     disable $func
707     check_ld "$@" <<EOF && enable $func
708 extern int $func();
709 int main(void){ $func(); }
710 EOF
711 }
712
713 check_mathfunc(){
714     log check_mathfunc "$@"
715     func=$1
716     shift
717     disable $func
718     check_ld "$@" <<EOF && enable $func
719 #include <math.h>
720 float foo(float f) { return $func(f); }
721 int main(void){ return 0; }
722 EOF
723 }
724
725 check_func_headers(){
726     log check_func_headers "$@"
727     headers=$1
728     funcs=$2
729     shift 2
730     {
731         for hdr in $headers; do
732             echo "#include <$hdr>"
733         done
734         for func in $funcs; do
735             echo "long check_$func(void) { return (long) $func; }"
736         done
737         echo "int main(void) { return 0; }"
738     } | check_ld "$@" && enable $funcs && enable_safe $headers
739 }
740
741 check_cpp_condition(){
742     log check_cpp_condition "$@"
743     header=$1
744     condition=$2
745     shift 2
746     check_cpp $($filter_cppflags "$@") <<EOF
747 #include <$header>
748 #if !($condition)
749 #error "unsatisfied condition: $condition"
750 #endif
751 EOF
752 }
753
754 check_lib(){
755     log check_lib "$@"
756     header="$1"
757     func="$2"
758     shift 2
759     check_header $header && check_func $func "$@" && add_extralibs "$@"
760 }
761
762 check_lib2(){
763     log check_lib2 "$@"
764     headers="$1"
765     funcs="$2"
766     shift 2
767     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
768 }
769
770 check_pkg_config(){
771     log check_pkg_config "$@"
772     pkg="$1"
773     headers="$2"
774     funcs="$3"
775     shift 3
776     $pkg_config --exists $pkg || return
777     pkg_cflags=$($pkg_config --cflags $pkg)
778     pkg_libs=$($pkg_config --libs $pkg)
779     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
780         set_safe ${pkg}_cflags $pkg_cflags   &&
781         set_safe ${pkg}_libs   $pkg_libs
782 }
783
784 check_exec(){
785     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
786 }
787
788 check_exec_crash(){
789     code=$(cat)
790
791     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
792     # are safe but may not be available everywhere.  Thus we use
793     # raise(SIGTERM) instead.  The check is run in a subshell so we
794     # can redirect the "Terminated" message from the shell.  SIGBUS
795     # is not defined by standard C so it is used conditionally.
796
797     (check_exec "$@") >> $logfile 2>&1 <<EOF
798 #include <signal.h>
799 static void sighandler(int sig){
800     raise(SIGTERM);
801 }
802 int main(void){
803     signal(SIGILL, sighandler);
804     signal(SIGFPE, sighandler);
805     signal(SIGSEGV, sighandler);
806 #ifdef SIGBUS
807     signal(SIGBUS, sighandler);
808 #endif
809     { $code }
810 }
811 EOF
812 }
813
814 check_type(){
815     log check_type "$@"
816     headers=$1
817     type=$2
818     shift 2
819     disable_safe "$type"
820     incs=""
821     for hdr in $headers; do
822         incs="$incs
823 #include <$hdr>"
824     done
825     check_cc "$@" <<EOF && enable_safe "$type"
826 $incs
827 $type v;
828 EOF
829 }
830
831 check_struct(){
832     log check_type "$@"
833     headers=$1
834     struct=$2
835     member=$3
836     shift 3
837     disable_safe "${struct}_${member}"
838     incs=""
839     for hdr in $headers; do
840         incs="$incs
841 #include <$hdr>"
842     done
843     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
844 $incs
845 const void *p = &(($struct *)0)->$member;
846 EOF
847 }
848
849 require(){
850     name="$1"
851     header="$2"
852     func="$3"
853     shift 3
854     check_lib $header $func "$@" || die "ERROR: $name not found"
855 }
856
857 require2(){
858     name="$1"
859     headers="$2"
860     func="$3"
861     shift 3
862     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
863 }
864
865 require_pkg_config(){
866     pkg="$1"
867     check_pkg_config "$@" || die "ERROR: $pkg not found"
868     add_cflags    $(get_safe ${pkg}_cflags)
869     add_extralibs $(get_safe ${pkg}_libs)
870 }
871
872 check_host_cc(){
873     log check_host_cc "$@"
874     cat > $TMPC
875     log_file $TMPC
876     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
877 }
878
879 check_host_cflags(){
880     log check_host_cflags "$@"
881     check_host_cc "$@" <<EOF && append host_cflags "$@"
882 int x;
883 EOF
884 }
885
886 apply(){
887     file=$1
888     shift
889     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
890 }
891
892 cp_if_changed(){
893     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
894     mkdir -p "$(dirname $2)"
895     cp -f "$1" "$2"
896 }
897
898 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
899 # system-dependent things.
900
901 COMPONENT_LIST="
902     bsfs
903     decoders
904     demuxers
905     encoders
906     filters
907     hwaccels
908     indevs
909     muxers
910     outdevs
911     parsers
912     protocols
913 "
914
915 PROGRAM_LIST="
916     avconv
917     avplay
918     avprobe
919     avserver
920 "
921
922 CONFIG_LIST="
923     $COMPONENT_LIST
924     $PROGRAM_LIST
925     ac3dsp
926     avcodec
927     avdevice
928     avfilter
929     avformat
930     avisynth
931     bzlib
932     dct
933     doc
934     dwt
935     dxva2
936     fastdiv
937     fft
938     frei0r
939     gnutls
940     gpl
941     gray
942     hardcoded_tables
943     libcdio
944     libdc1394
945     libfaac
946     libfreetype
947     libgsm
948     libmp3lame
949     libnut
950     libopencore_amrnb
951     libopencore_amrwb
952     libopencv
953     libopenjpeg
954     libpulse
955     librtmp
956     libschroedinger
957     libspeex
958     libtheora
959     libvo_aacenc
960     libvo_amrwbenc
961     libvorbis
962     libvpx
963     libx264
964     libxavs
965     libxvid
966     lsp
967     mdct
968     memalign_hack
969     mpegaudiodsp
970     network
971     nonfree
972     openssl
973     pic
974     rdft
975     rtpdec
976     runtime_cpudetect
977     safe_bitstream_reader
978     shared
979     sinewin
980     small
981     sram
982     static
983     swscale
984     swscale_alpha
985     thumb
986     vaapi
987     vda
988     vdpau
989     version3
990     xmm_clobber_test
991     x11grab
992     zlib
993 "
994
995 THREADS_LIST='
996     pthreads
997     w32threads
998 '
999
1000 ARCH_LIST='
1001     alpha
1002     arm
1003     avr32
1004     avr32_ap
1005     avr32_uc
1006     bfin
1007     ia64
1008     m68k
1009     mips
1010     mips64
1011     parisc
1012     ppc
1013     ppc64
1014     s390
1015     sh4
1016     sparc
1017     sparc64
1018     tomi
1019     x86
1020     x86_32
1021     x86_64
1022 '
1023
1024 ARCH_EXT_LIST='
1025     altivec
1026     amd3dnow
1027     amd3dnowext
1028     armv5te
1029     armv6
1030     armv6t2
1031     armvfp
1032     avx
1033     mmi
1034     mmx
1035     mmx2
1036     neon
1037     ppc4xx
1038     sse
1039     ssse3
1040     vfpv3
1041     vis
1042 '
1043
1044 HAVE_LIST_PUB='
1045     bigendian
1046     fast_unaligned
1047 '
1048
1049 HAVE_LIST="
1050     $ARCH_EXT_LIST
1051     $HAVE_LIST_PUB
1052     $THREADS_LIST
1053     aligned_stack
1054     alsa_asoundlib_h
1055     altivec_h
1056     arpa_inet_h
1057     asm_mod_y
1058     attribute_may_alias
1059     attribute_packed
1060     closesocket
1061     cmov
1062     dcbzl
1063     dev_bktr_ioctl_bt848_h
1064     dev_bktr_ioctl_meteor_h
1065     dev_ic_bt8xx_h
1066     dev_video_bktr_ioctl_bt848_h
1067     dev_video_meteor_ioctl_meteor_h
1068     dlfcn_h
1069     dlopen
1070     dos_paths
1071     ebp_available
1072     ebx_available
1073     exp2
1074     exp2f
1075     fast_64bit
1076     fast_clz
1077     fast_cmov
1078     fcntl
1079     fork
1080     getaddrinfo
1081     gethrtime
1082     GetProcessAffinityMask
1083     GetProcessMemoryInfo
1084     GetProcessTimes
1085     getrusage
1086     gnu_as
1087     ibm_asm
1088     inet_aton
1089     inline_asm
1090     isatty
1091     ldbrx
1092     libdc1394_1
1093     libdc1394_2
1094     llrint
1095     llrintf
1096     local_aligned_16
1097     local_aligned_8
1098     localtime_r
1099     log2
1100     log2f
1101     loongson
1102     lrint
1103     lrintf
1104     machine_ioctl_bt848_h
1105     machine_ioctl_meteor_h
1106     malloc_h
1107     MapViewOfFile
1108     memalign
1109     mkstemp
1110     mmap
1111     poll_h
1112     posix_memalign
1113     round
1114     roundf
1115     sched_getaffinity
1116     sdl
1117     sdl_video_size
1118     setmode
1119     setrlimit
1120     sndio_h
1121     socklen_t
1122     soundcard_h
1123     strerror_r
1124     strptime
1125     strtok_r
1126     struct_addrinfo
1127     struct_ipv6_mreq
1128     struct_rusage_ru_maxrss
1129     struct_sockaddr_in6
1130     struct_sockaddr_sa_len
1131     struct_sockaddr_storage
1132     struct_v4l2_frmivalenum_discrete
1133     symver
1134     symver_asm_label
1135     symver_gnu_asm
1136     sysconf
1137     sysctl
1138     sys_mman_h
1139     sys_param_h
1140     sys_resource_h
1141     sys_select_h
1142     sys_soundcard_h
1143     sys_videoio_h
1144     threads
1145     trunc
1146     truncf
1147     vfp_args
1148     VirtualAlloc
1149     winsock2_h
1150     xform_asm
1151     xmm_clobbers
1152     yasm
1153 "
1154
1155 # options emitted with CONFIG_ prefix but not available on command line
1156 CONFIG_EXTRA="
1157     aandct
1158     avutil
1159     golomb
1160     gplv3
1161     h264chroma
1162     h264dsp
1163     h264pred
1164     h264qpel
1165     huffman
1166     lgplv3
1167     lpc
1168 "
1169
1170 CMDLINE_SELECT="
1171     $ARCH_EXT_LIST
1172     $CONFIG_LIST
1173     $THREADS_LIST
1174     asm
1175     cross_compile
1176     debug
1177     extra_warnings
1178     logging
1179     optimizations
1180     symver
1181     yasm
1182 "
1183
1184 PATHS_LIST='
1185     bindir
1186     datadir
1187     incdir
1188     libdir
1189     mandir
1190     prefix
1191     shlibdir
1192 '
1193
1194 CMDLINE_SET="
1195     $PATHS_LIST
1196     ar
1197     arch
1198     as
1199     build_suffix
1200     cc
1201     cpu
1202     cross_prefix
1203     dep_cc
1204     extra_version
1205     host_cc
1206     host_cflags
1207     host_ldflags
1208     host_libs
1209     host_os
1210     ld
1211     logfile
1212     malloc_prefix
1213     nm
1214     optflags
1215     pkg_config
1216     samples
1217     sysinclude
1218     sysroot
1219     target_exec
1220     target_os
1221     target_path
1222 "
1223
1224 CMDLINE_APPEND="
1225     extra_cflags
1226 "
1227
1228 # code dependency declarations
1229
1230 # architecture extensions
1231
1232 armv5te_deps="arm"
1233 armv6_deps="arm"
1234 armv6t2_deps="arm"
1235 armvfp_deps="arm"
1236 neon_deps="arm"
1237 vfpv3_deps="armvfp"
1238
1239 mmi_deps="mips"
1240
1241 altivec_deps="ppc"
1242 ppc4xx_deps="ppc"
1243
1244 vis_deps="sparc"
1245
1246 x86_64_suggest="cmov fast_cmov"
1247 amd3dnow_deps="mmx"
1248 amd3dnowext_deps="amd3dnow"
1249 mmx_deps="x86"
1250 mmx2_deps="mmx"
1251 sse_deps="mmx"
1252 ssse3_deps="sse"
1253 avx_deps="ssse3"
1254
1255 aligned_stack_if_any="ppc x86"
1256 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1257 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1258 fast_unaligned_if_any="armv6 ppc x86"
1259
1260 inline_asm_deps="!tms470"
1261 need_memalign="altivec neon sse"
1262
1263 symver_if_any="symver_asm_label symver_gnu_asm"
1264
1265 # subsystems
1266 dct_select="rdft"
1267 mdct_select="fft"
1268 rdft_select="fft"
1269 mpegaudiodsp_select="dct"
1270
1271 # decoders / encoders / hardware accelerators
1272 aac_decoder_select="mdct sinewin"
1273 aac_encoder_select="mdct sinewin"
1274 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1275 ac3_decoder_select="mdct ac3dsp ac3_parser"
1276 ac3_encoder_select="mdct ac3dsp"
1277 ac3_fixed_encoder_select="mdct ac3dsp"
1278 alac_encoder_select="lpc"
1279 amrnb_decoder_select="lsp"
1280 amrwb_decoder_select="lsp"
1281 atrac1_decoder_select="mdct sinewin"
1282 atrac3_decoder_select="mdct"
1283 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1284 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1285 cavs_decoder_select="golomb"
1286 cook_decoder_select="mdct sinewin"
1287 cscd_decoder_suggest="zlib"
1288 dca_decoder_select="mdct"
1289 dnxhd_encoder_select="aandct"
1290 dxa_decoder_select="zlib"
1291 eac3_decoder_select="ac3_decoder"
1292 eac3_encoder_select="mdct ac3dsp"
1293 eamad_decoder_select="aandct"
1294 eatgq_decoder_select="aandct"
1295 eatqi_decoder_select="aandct"
1296 ffv1_decoder_select="golomb"
1297 flac_decoder_select="golomb"
1298 flac_encoder_select="golomb lpc"
1299 flashsv_decoder_select="zlib"
1300 flashsv_encoder_select="zlib"
1301 flashsv2_decoder_select="zlib"
1302 flv_decoder_select="h263_decoder"
1303 flv_encoder_select="h263_encoder"
1304 fraps_decoder_select="huffman"
1305 h261_encoder_select="aandct"
1306 h263_decoder_select="h263_parser"
1307 h263_encoder_select="aandct"
1308 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1309 h263i_decoder_select="h263_decoder"
1310 h263p_encoder_select="h263_encoder"
1311 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1312 h264_dxva2_hwaccel_deps="dxva2api_h"
1313 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1314 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1315 h264_vda_hwaccel_select="vda h264_decoder"
1316 h264_vdpau_decoder_select="vdpau h264_decoder"
1317 imc_decoder_select="fft mdct sinewin"
1318 jpegls_decoder_select="golomb"
1319 jpegls_encoder_select="golomb"
1320 ljpeg_encoder_select="aandct"
1321 loco_decoder_select="golomb"
1322 mjpeg_encoder_select="aandct"
1323 mlp_decoder_select="mlp_parser"
1324 mp1_decoder_select="mpegaudiodsp"
1325 mp1float_decoder_select="mpegaudiodsp"
1326 mp2_decoder_select="mpegaudiodsp"
1327 mp2float_decoder_select="mpegaudiodsp"
1328 mp3_decoder_select="mpegaudiodsp"
1329 mp3adu_decoder_select="mpegaudiodsp"
1330 mp3adufloat_decoder_select="mpegaudiodsp"
1331 mp3float_decoder_select="mpegaudiodsp"
1332 mp3on4_decoder_select="mpegaudiodsp"
1333 mp3on4float_decoder_select="mpegaudiodsp"
1334 mpc7_decoder_select="mpegaudiodsp"
1335 mpc8_decoder_select="mpegaudiodsp"
1336 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1337 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1338 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1339 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1340 mpeg1video_encoder_select="aandct"
1341 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1342 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1343 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1344 mpeg2video_encoder_select="aandct"
1345 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1346 mpeg4_encoder_select="h263_encoder"
1347 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1348 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1349 msmpeg4v1_decoder_select="h263_decoder"
1350 msmpeg4v1_encoder_select="h263_encoder"
1351 msmpeg4v2_decoder_select="h263_decoder"
1352 msmpeg4v2_encoder_select="h263_encoder"
1353 msmpeg4v3_decoder_select="h263_decoder"
1354 msmpeg4v3_encoder_select="h263_encoder"
1355 nellymoser_decoder_select="mdct sinewin"
1356 nellymoser_encoder_select="mdct sinewin"
1357 png_decoder_select="zlib"
1358 png_encoder_select="zlib"
1359 qcelp_decoder_select="lsp"
1360 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1361 ra_144_encoder_select="lpc"
1362 ralf_decoder_select="golomb"
1363 rv10_decoder_select="h263_decoder"
1364 rv10_encoder_select="h263_encoder"
1365 rv20_decoder_select="h263_decoder"
1366 rv20_encoder_select="h263_encoder"
1367 rv30_decoder_select="golomb h264chroma h264pred h264qpel"
1368 rv40_decoder_select="golomb h264chroma h264pred h264qpel"
1369 shorten_decoder_select="golomb"
1370 sipr_decoder_select="lsp"
1371 snow_decoder_select="dwt"
1372 snow_encoder_select="aandct dwt"
1373 svq1_encoder_select="aandct"
1374 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1375 svq3_decoder_suggest="zlib"
1376 theora_decoder_select="vp3_decoder"
1377 tiff_decoder_suggest="zlib"
1378 tiff_encoder_suggest="zlib"
1379 truehd_decoder_select="mlp_decoder"
1380 tscc_decoder_select="zlib"
1381 twinvq_decoder_select="mdct lsp sinewin"
1382 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1383 vc1_dxva2_hwaccel_deps="dxva2api_h"
1384 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1385 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1386 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1387 vc1image_decoder_select="vc1_decoder"
1388 vorbis_decoder_select="mdct"
1389 vorbis_encoder_select="mdct"
1390 vp6_decoder_select="huffman"
1391 vp6a_decoder_select="vp6_decoder"
1392 vp6f_decoder_select="vp6_decoder"
1393 vp8_decoder_select="h264pred h264qpel"
1394 wmapro_decoder_select="mdct sinewin"
1395 wmav1_decoder_select="mdct sinewin"
1396 wmav1_encoder_select="mdct sinewin"
1397 wmav2_decoder_select="mdct sinewin"
1398 wmav2_encoder_select="mdct sinewin"
1399 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1400 wmv1_decoder_select="h263_decoder"
1401 wmv1_encoder_select="h263_encoder"
1402 wmv2_decoder_select="h263_decoder"
1403 wmv2_encoder_select="h263_encoder"
1404 wmv3_decoder_select="vc1_decoder"
1405 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1406 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1407 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1408 wmv3image_decoder_select="wmv3_decoder"
1409 zerocodec_decoder_select="zlib"
1410 zlib_decoder_select="zlib"
1411 zlib_encoder_select="zlib"
1412 zmbv_decoder_select="zlib"
1413 zmbv_encoder_select="zlib"
1414
1415 vaapi_deps="va_va_h"
1416 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1417 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1418
1419 # parsers
1420 h264_parser_select="golomb h264dsp h264pred"
1421
1422 # external libraries
1423 libfaac_encoder_deps="libfaac"
1424 libgsm_decoder_deps="libgsm"
1425 libgsm_encoder_deps="libgsm"
1426 libgsm_ms_decoder_deps="libgsm"
1427 libgsm_ms_encoder_deps="libgsm"
1428 libmp3lame_encoder_deps="libmp3lame"
1429 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1430 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1431 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1432 libopenjpeg_decoder_deps="libopenjpeg"
1433 libschroedinger_decoder_deps="libschroedinger"
1434 libschroedinger_encoder_deps="libschroedinger"
1435 libspeex_decoder_deps="libspeex"
1436 libspeex_encoder_deps="libspeex"
1437 libtheora_encoder_deps="libtheora"
1438 libvo_aacenc_encoder_deps="libvo_aacenc"
1439 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1440 libvorbis_encoder_deps="libvorbis"
1441 libvpx_decoder_deps="libvpx"
1442 libvpx_encoder_deps="libvpx"
1443 libx264_encoder_deps="libx264"
1444 libxavs_encoder_deps="libxavs"
1445 libxvid_encoder_deps="libxvid"
1446
1447 # demuxers / muxers
1448 ac3_demuxer_select="ac3_parser"
1449 asf_stream_muxer_select="asf_muxer"
1450 avisynth_demuxer_deps="avisynth"
1451 dirac_demuxer_select="dirac_parser"
1452 eac3_demuxer_select="ac3_parser"
1453 flac_demuxer_select="flac_parser"
1454 ipod_muxer_select="mov_muxer"
1455 libnut_demuxer_deps="libnut"
1456 libnut_muxer_deps="libnut"
1457 matroska_audio_muxer_select="matroska_muxer"
1458 matroska_demuxer_suggest="zlib bzlib"
1459 mov_demuxer_suggest="zlib"
1460 mp3_demuxer_select="mpegaudio_parser"
1461 mp4_muxer_select="mov_muxer"
1462 mpegtsraw_demuxer_select="mpegts_demuxer"
1463 mxf_d10_muxer_select="mxf_muxer"
1464 ogg_demuxer_select="golomb"
1465 psp_muxer_select="mov_muxer"
1466 rtp_demuxer_select="sdp_demuxer"
1467 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1468 rtsp_demuxer_select="http_protocol rtpdec"
1469 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1470 sap_demuxer_select="sdp_demuxer"
1471 sap_muxer_select="rtp_muxer rtp_protocol"
1472 sdp_demuxer_select="rtpdec"
1473 spdif_muxer_select="aac_parser"
1474 tg2_muxer_select="mov_muxer"
1475 tgp_muxer_select="mov_muxer"
1476 w64_demuxer_deps="wav_demuxer"
1477
1478 # indevs / outdevs
1479 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1480 alsa_outdev_deps="alsa_asoundlib_h"
1481 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1482 dv1394_indev_deps="dv1394 dv_demuxer"
1483 fbdev_indev_deps="linux_fb_h"
1484 jack_indev_deps="jack_jack_h"
1485 libcdio_indev_deps="libcdio"
1486 libdc1394_indev_deps="libdc1394"
1487 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1488 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1489 pulse_indev_deps="libpulse"
1490 sndio_indev_deps="sndio_h"
1491 sndio_outdev_deps="sndio_h"
1492 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1493 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1494 vfwcap_indev_extralibs="-lavicap32"
1495 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1496
1497 # protocols
1498 gopher_protocol_deps="network"
1499 httpproxy_protocol_deps="network"
1500 httpproxy_protocol_select="tcp_protocol"
1501 http_protocol_deps="network"
1502 http_protocol_select="tcp_protocol"
1503 https_protocol_select="tls_protocol"
1504 librtmp_protocol_deps="librtmp"
1505 librtmpe_protocol_deps="librtmp"
1506 librtmps_protocol_deps="librtmp"
1507 librtmpt_protocol_deps="librtmp"
1508 librtmpte_protocol_deps="librtmp"
1509 mmsh_protocol_select="http_protocol"
1510 mmst_protocol_deps="network"
1511 rtmp_protocol_deps="!librtmp_protocol"
1512 rtmp_protocol_select="tcp_protocol"
1513 rtp_protocol_select="udp_protocol"
1514 tcp_protocol_deps="network"
1515 tls_protocol_deps_any="openssl gnutls"
1516 tls_protocol_select="tcp_protocol"
1517 udp_protocol_deps="network"
1518
1519 # filters
1520 blackframe_filter_deps="gpl"
1521 boxblur_filter_deps="gpl"
1522 cropdetect_filter_deps="gpl"
1523 delogo_filter_deps="gpl"
1524 drawtext_filter_deps="libfreetype"
1525 frei0r_filter_deps="frei0r dlopen strtok_r"
1526 frei0r_filter_extralibs='$ldl'
1527 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1528 frei0r_src_filter_extralibs='$ldl'
1529 hqdn3d_filter_deps="gpl"
1530 ocv_filter_deps="libopencv"
1531 scale_filter_deps="swscale"
1532 yadif_filter_deps="gpl"
1533
1534 # libraries
1535 avdevice_deps="avcodec avformat"
1536 avformat_deps="avcodec"
1537
1538 # programs
1539 avconv_deps="avcodec avfilter avformat swscale"
1540 avplay_deps="avcodec avformat swscale sdl"
1541 avplay_select="rdft"
1542 avprobe_deps="avcodec avformat"
1543 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1544 avserver_extralibs='$ldl'
1545
1546 doc_deps="texi2html"
1547
1548 # tests
1549
1550 test_deps(){
1551     suf1=$1
1552     suf2=$2
1553     shift 2
1554     for v; do
1555         dep=${v%=*}
1556         tests=${v#*=}
1557         for name in ${tests}; do
1558             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1559         done
1560     done
1561 }
1562
1563 mxf_d10_test_deps="avfilter"
1564 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1565
1566 test_deps _encoder _decoder                                             \
1567     adpcm_ima_qt                                                        \
1568     adpcm_ima_wav                                                       \
1569     adpcm_ms                                                            \
1570     adpcm_swf                                                           \
1571     adpcm_yamaha=adpcm_yam                                              \
1572     alac                                                                \
1573     asv1                                                                \
1574     asv2                                                                \
1575     bmp                                                                 \
1576     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1577     dvvideo="dv dv_411 dv50"                                            \
1578     ffv1                                                                \
1579     flac                                                                \
1580     flashsv                                                             \
1581     flv                                                                 \
1582     adpcm_g726=g726                                                     \
1583     gif                                                                 \
1584     h261                                                                \
1585     h263="h263 h263p"                                                   \
1586     huffyuv                                                             \
1587     jpegls                                                              \
1588     mjpeg="jpg mjpeg ljpeg"                                             \
1589     mp2                                                                 \
1590     mpeg1video="mpeg mpeg1b"                                            \
1591     mpeg2video="mpeg2 mpeg2_422 mpeg2_idct_int mpeg2_ilace mpeg2_ivlc_qprd" \
1592     mpeg2video="mpeg2thread mpeg2thread_ilace"                          \
1593     mpeg4="mpeg4 mpeg4_adap mpeg4_qpel mpeg4_qprd mpeg4adv mpeg4nr"     \
1594     mpeg4="mpeg4thread error rc"                                        \
1595     msmpeg4v3=msmpeg4                                                   \
1596     msmpeg4v2                                                           \
1597     pbm=pbmpipe                                                         \
1598     pcx                                                                 \
1599     pgm="pgm pgmpipe"                                                   \
1600     png                                                                 \
1601     ppm="ppm ppmpipe"                                                   \
1602     rawvideo="rgb yuv"                                                  \
1603     roq                                                                 \
1604     rv10                                                                \
1605     rv20                                                                \
1606     sgi                                                                 \
1607     snow="snow snowll"                                                  \
1608     svq1                                                                \
1609     targa=tga                                                           \
1610     tiff                                                                \
1611     wmav1                                                               \
1612     wmav2                                                               \
1613     wmv1                                                                \
1614     wmv2                                                                \
1615
1616 test_deps _muxer _demuxer                                               \
1617     aiff                                                                \
1618     pcm_alaw=alaw                                                       \
1619     asf                                                                 \
1620     au                                                                  \
1621     avi                                                                 \
1622     dv=dv_fmt                                                           \
1623     ffm                                                                 \
1624     flv=flv_fmt                                                         \
1625     gxf                                                                 \
1626     matroska=mkv                                                        \
1627     mmf                                                                 \
1628     mov                                                                 \
1629     pcm_mulaw=mulaw                                                     \
1630     mxf="mxf mxf_d10"                                                   \
1631     nut                                                                 \
1632     ogg                                                                 \
1633     rawvideo=pixfmt                                                     \
1634     rm                                                                  \
1635     swf                                                                 \
1636     mpegts=ts                                                           \
1637     voc                                                                 \
1638     wav                                                                 \
1639     yuv4mpegpipe=yuv4mpeg                                               \
1640
1641 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder"
1642 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1643
1644 # default parameters
1645
1646 logfile="config.log"
1647
1648 # installation paths
1649 prefix_default="/usr/local"
1650 bindir_default='${prefix}/bin'
1651 datadir_default='${prefix}/share/avconv'
1652 incdir_default='${prefix}/include'
1653 libdir_default='${prefix}/lib'
1654 mandir_default='${prefix}/share/man'
1655 shlibdir_default="$libdir_default"
1656
1657 # toolchain
1658 ar_default="ar"
1659 cc_default="gcc"
1660 cc_version=\"unknown\"
1661 host_cc_default="gcc"
1662 ln_s="ln -sf"
1663 nm_default="nm"
1664 objformat="elf"
1665 pkg_config_default=pkg-config
1666 ranlib="ranlib"
1667 yasmexe="yasm"
1668
1669 nm_opts='-g'
1670 nogas=":"
1671
1672 # machine
1673 arch_default=$(uname -m)
1674 cpu="generic"
1675
1676 # OS
1677 target_os_default=$(tolower $(uname -s))
1678 host_os=$target_os_default
1679
1680 # configurable options
1681 enable $PROGRAM_LIST
1682
1683 enable avcodec
1684 enable avdevice
1685 enable avfilter
1686 enable avformat
1687 enable avutil
1688 enable swscale
1689
1690 enable asm
1691 enable debug
1692 enable doc
1693 enable fastdiv
1694 enable network
1695 enable optimizations
1696 enable safe_bitstream_reader
1697 enable static
1698 enable swscale_alpha
1699
1700 # build settings
1701 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1702 AVSERVERLDFLAGS=-Wl,-E
1703 LIBPREF="lib"
1704 LIBSUF=".a"
1705 FULLNAME='$(NAME)$(BUILDSUF)'
1706 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1707 SLIBPREF="lib"
1708 SLIBSUF=".so"
1709 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1710 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1711 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1712 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1713 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1714 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1715
1716 AS_O='-o $@'
1717 CC_O='-o $@'
1718
1719 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1720 host_libs='-lm'
1721
1722 target_path='$(CURDIR)'
1723
1724 # since the object filename is not given with the -MM flag, the compiler
1725 # is only able to print the basename, and we must add the path ourselves
1726 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1727 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1728
1729 # find source path
1730 if test -f configure; then
1731     source_path=.
1732 else
1733     source_path=$(cd $(dirname "$0"); pwd)
1734     echo "$source_path" | grep -q '[[:blank:]]' &&
1735         die "Out of tree builds are impossible with whitespace in source path."
1736     test -e "$source_path/config.h" &&
1737         die "Out of tree builds are impossible with config.h in source dir."
1738 fi
1739
1740 for v in "$@"; do
1741     r=${v#*=}
1742     l=${v%"$r"}
1743     r=$(sh_quote "$r")
1744     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1745 done
1746
1747 find_things(){
1748     thing=$1
1749     pattern=$2
1750     file=$source_path/$3
1751     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1752 }
1753
1754 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1755 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1756 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1757 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1758 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1759 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1760 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1761 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1762 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1763 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1764 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1765
1766 ALL_COMPONENTS="
1767     $BSF_LIST
1768     $DECODER_LIST
1769     $DEMUXER_LIST
1770     $ENCODER_LIST
1771     $FILTER_LIST
1772     $HWACCEL_LIST
1773     $INDEV_LIST
1774     $MUXER_LIST
1775     $OUTDEV_LIST
1776     $PARSER_LIST
1777     $PROTOCOL_LIST
1778 "
1779
1780 find_tests(){
1781     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1782 }
1783
1784 ACODEC_TESTS=$(find_tests acodec)
1785 VCODEC_TESTS=$(find_tests vsynth1)
1786 LAVF_TESTS=$(find_tests lavf)
1787 LAVFI_TESTS=$(find_tests lavfi)
1788 SEEK_TESTS=$(find_tests seek seek_)
1789
1790 ALL_TESTS="$ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
1791
1792 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1793
1794 for n in $COMPONENT_LIST; do
1795     v=$(toupper ${n%s})_LIST
1796     eval enable \$$v
1797     eval ${n}_if_any="\$$v"
1798 done
1799
1800 enable $ARCH_EXT_LIST $ALL_TESTS
1801
1802 die_unknown(){
1803     echo "Unknown option \"$1\"."
1804     echo "See $0 --help for available options."
1805     exit 1
1806 }
1807
1808 show_list() {
1809     suffix=_$1
1810     shift
1811     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1812     exit 0
1813 }
1814
1815 for opt do
1816     optval="${opt#*=}"
1817     case "$opt" in
1818     --extra-ldflags=*) add_ldflags $optval
1819     ;;
1820     --extra-libs=*) add_extralibs $optval
1821     ;;
1822     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1823     ;;
1824     --enable-debug=*) debuglevel="$optval"
1825     ;;
1826     --disable-everything)
1827     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1828     ;;
1829     --enable-*=*|--disable-*=*)
1830     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1831     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1832     eval list=\$$(toupper $thing)_LIST
1833     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1834     $action $(filter "$name" $list)
1835     ;;
1836     --enable-?*|--disable-?*)
1837     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1838     if is_in $option $COMPONENT_LIST; then
1839         test $action = disable && action=unset
1840         eval $action \$$(toupper ${option%s})_LIST
1841     elif is_in $option $CMDLINE_SELECT; then
1842         $action $option
1843     else
1844         die_unknown $opt
1845     fi
1846     ;;
1847     --list-*)
1848         NAME="${opt#--list-}"
1849         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1850         NAME=${NAME%s}
1851         eval show_list $NAME \$$(toupper $NAME)_LIST
1852     ;;
1853     --help|-h) show_help
1854     ;;
1855     *)
1856     optname="${opt%%=*}"
1857     optname="${optname#--}"
1858     optname=$(echo "$optname" | sed 's/-/_/g')
1859     if is_in $optname $CMDLINE_SET; then
1860         eval $optname='$optval'
1861     elif is_in $optname $CMDLINE_APPEND; then
1862         append $optname "$optval"
1863     else
1864          die_unknown $opt
1865     fi
1866     ;;
1867     esac
1868 done
1869
1870 disabled logging && logfile=/dev/null
1871
1872 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1873 set >> $logfile
1874
1875 test -n "$cross_prefix" && enable cross_compile
1876
1877 if enabled cross_compile; then
1878     test -n "$arch" && test -n "$target_os" ||
1879         die "Must specify target arch and OS when cross-compiling"
1880 fi
1881
1882 set_default arch target_os
1883
1884 ar_default="${cross_prefix}${ar_default}"
1885 cc_default="${cross_prefix}${cc_default}"
1886 nm_default="${cross_prefix}${nm_default}"
1887 pkg_config_default="${cross_prefix}${pkg_config_default}"
1888 ranlib="${cross_prefix}${ranlib}"
1889
1890 sysinclude_default="${sysroot}/usr/include"
1891
1892 set_default cc nm pkg_config sysinclude
1893 enabled cross_compile || host_cc_default=$cc
1894 set_default host_cc
1895
1896 if ! $pkg_config --version >/dev/null 2>&1; then
1897     warn "$pkg_config not found, library detection may fail."
1898     pkg_config=false
1899 fi
1900
1901 exesuf() {
1902     case $1 in
1903         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1904     esac
1905 }
1906
1907 EXESUF=$(exesuf $target_os)
1908 HOSTEXESUF=$(exesuf $host_os)
1909
1910 # set temporary file name
1911 : ${TMPDIR:=$TEMPDIR}
1912 : ${TMPDIR:=$TMP}
1913 : ${TMPDIR:=/tmp}
1914
1915 if ! check_cmd mktemp -u XXXXXX; then
1916     # simple replacement for missing mktemp
1917     # NOT SAFE FOR GENERAL USE
1918     mktemp(){
1919         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1920     }
1921 fi
1922
1923 tmpfile(){
1924     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1925         (set -C; exec > $tmp) 2>/dev/null ||
1926         die "Unable to create temporary file in $TMPDIR."
1927     append TMPFILES $tmp
1928     eval $1=$tmp
1929 }
1930
1931 trap 'rm -f -- $TMPFILES' EXIT
1932
1933 tmpfile TMPASM .asm
1934 tmpfile TMPC   .c
1935 tmpfile TMPE   $EXESUF
1936 tmpfile TMPH   .h
1937 tmpfile TMPO   .o
1938 tmpfile TMPS   .S
1939 tmpfile TMPSH  .sh
1940 tmpfile TMPV   .ver
1941
1942 unset -f mktemp
1943
1944 chmod +x $TMPE
1945
1946 # make sure we can execute files in $TMPDIR
1947 cat > $TMPSH 2>> $logfile <<EOF
1948 #! /bin/sh
1949 EOF
1950 chmod +x $TMPSH >> $logfile 2>&1
1951 if ! $TMPSH >> $logfile 2>&1; then
1952     cat <<EOF
1953 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1954 variable to another directory and make sure that it is not mounted noexec.
1955 EOF
1956     die "Sanity test failed."
1957 fi
1958
1959 filter_asflags=echo
1960 filter_cflags=echo
1961 filter_cppflags=echo
1962
1963 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1964     cc_type=llvm_gcc
1965     cc_version=__VERSION__
1966     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1967     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1968     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1969     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1970     speed_cflags='-O3'
1971     size_cflags='-Os'
1972 elif $cc -v 2>&1 | grep -qi ^gcc; then
1973     cc_type=gcc
1974     cc_version=__VERSION__
1975     gcc_version=$($cc --version | head -n1)
1976     gcc_basever=$($cc -dumpversion)
1977     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1978     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1979     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1980     if ! $cc -dumpversion | grep -q '^2\.'; then
1981         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1982         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1983     fi
1984     speed_cflags='-O3'
1985     size_cflags='-Os'
1986 elif $cc --version 2>/dev/null | grep -q Intel; then
1987     cc_type=icc
1988     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1989     cc_ident=$($cc --version | head -n1)
1990     icc_version=$($cc -dumpversion)
1991     CC_DEPFLAGS='-MMD'
1992     AS_DEPFLAGS='-MMD'
1993     speed_cflags='-O3'
1994     size_cflags='-Os'
1995     noopt_cflags='-O1'
1996 elif $cc -v 2>&1 | grep -q xlc; then
1997     cc_type=xlc
1998     cc_version="AV_STRINGIFY(__IBMC__)"
1999     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
2000     speed_cflags='-O5'
2001     size_cflags='-O5 -qcompact'
2002 elif $cc -V 2>/dev/null | grep -q Compaq; then
2003     cc_type=ccc
2004     cc_version="AV_STRINGIFY(__DECC_VER)"
2005     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
2006     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
2007     debuglevel=3
2008     add_ldflags -Wl,-z,now # calls to libots crash without this
2009     speed_cflags='-fast'
2010     size_cflags='-O1'
2011 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2012     test -d "$sysroot" || die "No valid sysroot specified."
2013     cc_type=armcc
2014     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
2015     cc_ident=$($cc --vsn | head -n1)
2016     armcc_conf="$PWD/armcc.conf"
2017     $cc --arm_linux_configure                 \
2018         --arm_linux_config_file="$armcc_conf" \
2019         --configure_sysroot="$sysroot"        \
2020         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2021         die "Error creating armcc configuration file."
2022     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2023     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2024     as_default="${cross_prefix}gcc"
2025     CC_DEPFLAGS='-MMD'
2026     AS_DEPFLAGS='-MMD'
2027     speed_cflags='-O3'
2028     size_cflags='-Os'
2029     filter_asflags="filter_out -W${armcc_opt}*"
2030 elif $cc -version 2>/dev/null | grep -q TMS470; then
2031     cc_type=tms470
2032     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2033     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2034     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2035     CC_O='-fr=$(@D)'
2036     as_default="${cross_prefix}gcc"
2037     ld_default="${cross_prefix}gcc"
2038     TMPO=$(basename $TMPC .c).o
2039     append TMPFILES $TMPO
2040     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2041     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2042     AS_DEPFLAGS='-MMD'
2043     speed_cflags='-O3 -mf=5'
2044     size_cflags='-O3 -mf=2'
2045     filter_cflags=tms470_flags
2046     tms470_flags(){
2047         for flag; do
2048             case $flag in
2049                 -march=*|-mcpu=*)
2050                     case "${flag#*=}" in
2051                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2052                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2053                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2054                         armv6*|arm11*)          echo -mv=6   ;;
2055                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2056                                                 echo -mv=5e  ;;
2057                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2058                     esac
2059                     ;;
2060                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2061                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2062                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2063                 -msoft-float)   echo --float_support=vfplib       ;;
2064                 -O[0-3]|-mf=*)  echo $flag                        ;;
2065                 -g)             echo -g -mn                       ;;
2066                 -pds=*)         echo $flag                        ;;
2067             esac
2068         done
2069     }
2070 elif $cc -v 2>&1 | grep -q clang; then
2071     cc_type=clang
2072     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2073         cc_version=__clang_version__ || cc_version=__VERSION__
2074     cc_ident=$($cc --version | head -n1)
2075     CC_DEPFLAGS='-MMD'
2076     AS_DEPFLAGS='-MMD'
2077     speed_cflags='-O3'
2078     size_cflags='-Os'
2079 elif $cc -V 2>&1 | grep -q Sun; then
2080     cc_type=suncc
2081     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2082     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2083     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2084     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2085     add_ldflags -xc99
2086     speed_cflags='-O5'
2087     size_cflags='-O5 -xspace'
2088     filter_cflags=suncc_flags
2089     suncc_flags(){
2090         for flag; do
2091             case $flag in
2092                 -march=*|-mcpu=*)
2093                     case "${flag#*=}" in
2094                         native)                   echo -xtarget=native       ;;
2095                         v9|niagara)               echo -xarch=sparc          ;;
2096                         ultrasparc)               echo -xarch=sparcvis       ;;
2097                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2098                         i586|pentium)             echo -xchip=pentium        ;;
2099                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2100                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2101                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2102                         pentium4*)          echo -xtarget=pentium4           ;;
2103                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2104                         *-sse3)             echo -xarch=sse3                 ;;
2105                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2106                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2107                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2108                         k8|opteron|athlon64|athlon-fx)
2109                                                   echo -xarch=sse2a          ;;
2110                         athlon*)                  echo -xarch=pentium_proa   ;;
2111                     esac
2112                     ;;
2113                 -std=c99)             echo -xc99              ;;
2114                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2115                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2116                 -W*,*)                echo $flag              ;;
2117                 -f*-*|-W*)                                    ;;
2118                 *)                    echo $flag              ;;
2119             esac
2120         done
2121     }
2122 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2123     cc_type=pathscale
2124     cc_version=__PATHSCALE__
2125     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2126     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2127     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2128     speed_cflags='-O2'
2129     size_cflags='-Os'
2130     filter_cflags='filter_out -Wdisabled-optimization'
2131 elif $cc -v 2>&1 | grep -q Open64; then
2132     cc_type=open64
2133     cc_version=__OPEN64__
2134     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2135     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2136     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2137     speed_cflags='-O2'
2138     size_cflags='-Os'
2139     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2140 elif $cc -V 2>&1 | grep -q Portland; then
2141     cc_type=pgi
2142     cc_version='AV_STRINGIFY(__PGIC__.__PGIC_MINOR__.__PGIC_PATCHLEVEL__)'
2143     cc_ident="PGI $($cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2144     opt_common='-alias=ansi -Mlre -Mpre'
2145     speed_cflags="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2146     size_cflags="-O2 -Munroll=c:1 $opt_common"
2147     noopt_cflags="-O1"
2148     filter_cflags=pgi_flags
2149     pgi_flags(){
2150         for flag; do
2151             case $flag in
2152                 -fomit-frame-pointer) echo -Mnoframe ;;
2153                 -g)                   echo -gopt ;;
2154                 *)                    echo $flag ;;
2155             esac
2156         done
2157     }
2158 fi
2159
2160 test -n "$cc_type" && enable $cc_type ||
2161     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2162
2163 : ${as_default:=$cc}
2164 : ${dep_cc_default:=$cc}
2165 : ${ld_default:=$cc}
2166 set_default ar as dep_cc ld
2167
2168 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2169 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2170
2171 add_cflags $extra_cflags
2172 add_asflags $extra_cflags
2173
2174 if test -n "$sysroot"; then
2175     case "$cc_type" in
2176         gcc|llvm_gcc|clang)
2177             add_cppflags --sysroot="$sysroot"
2178             add_ldflags --sysroot="$sysroot"
2179         ;;
2180         tms470)
2181             add_cppflags -I"$sysinclude"
2182             add_ldflags  --sysroot="$sysroot"
2183         ;;
2184     esac
2185 fi
2186
2187 if test "$cpu" = host; then
2188     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2189
2190     case "$cc_type" in
2191         gcc|llvm_gcc)
2192             check_native(){
2193                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2194                 sed -n "/cc1.*$1=/{
2195                             s/.*$1=\\([^ ]*\\).*/\\1/
2196                             p
2197                             q
2198                         }" $TMPE
2199             }
2200             cpu=$(check_native -march || check_native -mcpu)
2201         ;;
2202     esac
2203
2204     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2205 fi
2206
2207 # Deal with common $arch aliases
2208 case "$arch" in
2209     arm*)
2210         arch="arm"
2211     ;;
2212     mips|mipsel|IP*)
2213         arch="mips"
2214     ;;
2215     mips64*)
2216         arch="mips"
2217         subarch="mips64"
2218     ;;
2219     parisc|hppa)
2220         arch="parisc"
2221     ;;
2222     parisc64|hppa64)
2223         arch="parisc"
2224         subarch="parisc64"
2225     ;;
2226     "Power Macintosh"|ppc|powerpc)
2227         arch="ppc"
2228     ;;
2229     ppc64|powerpc64)
2230         arch="ppc"
2231         subarch="ppc64"
2232     ;;
2233     s390|s390x)
2234         arch="s390"
2235     ;;
2236     sh4|sh)
2237         arch="sh4"
2238     ;;
2239     sun4u|sparc64)
2240         arch="sparc"
2241         subarch="sparc64"
2242     ;;
2243     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2244         arch="x86"
2245     ;;
2246 esac
2247
2248 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2249 enable $arch
2250
2251 # Add processor-specific flags
2252 if test "$cpu" = generic; then
2253     : do nothing
2254 elif enabled ppc; then
2255
2256     case $(tolower $cpu) in
2257         601|ppc601|powerpc601)
2258             cpuflags="-mcpu=601"
2259             disable altivec
2260         ;;
2261         603*|ppc603*|powerpc603*)
2262             cpuflags="-mcpu=603"
2263             disable altivec
2264         ;;
2265         604*|ppc604*|powerpc604*)
2266             cpuflags="-mcpu=604"
2267             disable altivec
2268         ;;
2269         g3|75*|ppc75*|powerpc75*)
2270             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2271             disable altivec
2272         ;;
2273         g4|745*|ppc745*|powerpc745*)
2274             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2275         ;;
2276         74*|ppc74*|powerpc74*)
2277             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2278         ;;
2279         g5|970|ppc970|powerpc970|power4*)
2280             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2281         ;;
2282         cell)
2283             cpuflags="-mcpu=cell"
2284             enable ldbrx
2285         ;;
2286         e500v2)
2287             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2288             disable altivec
2289         ;;
2290         e500)
2291             cpuflags="-mcpu=8540 -mhard-float"
2292             disable altivec
2293         ;;
2294     esac
2295
2296 elif enabled x86; then
2297
2298     case $cpu in
2299         i[345]86|pentium)
2300             cpuflags="-march=$cpu"
2301             disable mmx
2302         ;;
2303         # targets that do NOT support conditional mov (cmov)
2304         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2305             cpuflags="-march=$cpu"
2306             disable cmov
2307         ;;
2308         # targets that do support conditional mov (cmov)
2309         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2310             cpuflags="-march=$cpu"
2311             enable cmov
2312             enable fast_cmov
2313         ;;
2314         # targets that do support conditional mov but on which it's slow
2315         pentium4|pentium4m|prescott|nocona)
2316             cpuflags="-march=$cpu"
2317             enable cmov
2318             disable fast_cmov
2319         ;;
2320     esac
2321
2322 elif enabled sparc; then
2323
2324     case $cpu in
2325         niagara)
2326             cpuflags="-mcpu=$cpu"
2327             disable vis
2328         ;;
2329         sparc64)
2330             cpuflags="-mcpu=v9"
2331         ;;
2332     esac
2333
2334 elif enabled arm; then
2335
2336     case $cpu in
2337         armv*)
2338             cpuflags="-march=$cpu"
2339             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2340         ;;
2341         *)
2342             cpuflags="-mcpu=$cpu"
2343             case $cpu in
2344                 cortex-a*)                               subarch=armv7a  ;;
2345                 cortex-r*)                               subarch=armv7r  ;;
2346                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2347                 arm11*)                                  subarch=armv6   ;;
2348                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2349                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2350             esac
2351         ;;
2352     esac
2353
2354 elif enabled alpha; then
2355
2356     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2357
2358 elif enabled bfin; then
2359
2360     cpuflags="-mcpu=$cpu"
2361
2362 elif enabled mips; then
2363
2364     cpuflags="-march=$cpu"
2365
2366 elif enabled avr32; then
2367
2368     case $cpu in
2369         ap7[02]0[0-2])
2370             subarch="avr32_ap"
2371             cpuflags="-mpart=$cpu"
2372         ;;
2373         ap)
2374             subarch="avr32_ap"
2375             cpuflags="-march=$cpu"
2376         ;;
2377         uc3[ab]*)
2378             subarch="avr32_uc"
2379             cpuflags="-mcpu=$cpu"
2380         ;;
2381         uc)
2382             subarch="avr32_uc"
2383             cpuflags="-march=$cpu"
2384         ;;
2385     esac
2386
2387 fi
2388
2389 add_cflags $cpuflags
2390 add_asflags $cpuflags
2391
2392 # compiler sanity check
2393 check_exec <<EOF
2394 int main(void){ return 0; }
2395 EOF
2396 if test "$?" != 0; then
2397     echo "$cc is unable to create an executable file."
2398     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2399         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2400         echo "Only do this if you know what cross compiling means."
2401     fi
2402     die "C compiler test failed."
2403 fi
2404
2405 add_cppflags -D_ISOC99_SOURCE
2406 check_cflags -std=c99
2407 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2408 #include <stdlib.h>
2409 EOF
2410 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2411 #include <stdlib.h>
2412 EOF
2413
2414 check_host_cflags -std=c99
2415 check_host_cflags -Wall
2416
2417 case "$arch" in
2418     alpha|ia64|mips|parisc|sparc)
2419         spic=$shared
2420     ;;
2421     x86)
2422         subarch="x86_32"
2423         check_cc <<EOF && subarch="x86_64"
2424         int test[(int)sizeof(char*) - 7];
2425 EOF
2426         if test "$subarch" = "x86_64"; then
2427             spic=$shared
2428         fi
2429     ;;
2430 esac
2431
2432 enable $subarch
2433 enabled spic && enable pic
2434
2435 # OS specific
2436 case $target_os in
2437     haiku)
2438         prefix_default="/boot/common"
2439         network_extralibs="-lnetwork"
2440         host_libs=
2441         ;;
2442     sunos)
2443         AVSERVERLDFLAGS=""
2444         SHFLAGS='-shared -Wl,-h,$$(@F)'
2445         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2446         network_extralibs="-lsocket -lnsl"
2447         add_cppflags -D__EXTENSIONS__
2448         # When using suncc to build, the Solaris linker will mark
2449         # an executable with each instruction set encountered by
2450         # the Solaris assembler.  As our libraries contain their own
2451         # guards for processor-specific code, instead suppress
2452         # generation of the HWCAPS ELF section on Solaris x86 only.
2453         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2454         nm_opts='-P -g'
2455         ;;
2456     netbsd)
2457         disable symver
2458         oss_indev_extralibs="-lossaudio"
2459         oss_outdev_extralibs="-lossaudio"
2460         ;;
2461     openbsd)
2462         enable malloc_aligned
2463         # On OpenBSD 4.5. the compiler does not use PIC unless
2464         # explicitly using -fPIC. Libav builds fine without PIC,
2465         # however the generated executable will not do anything
2466         # (simply quits with exit-code 1, no crash, no output).
2467         # Thus explicitly enable PIC here.
2468         enable pic
2469         disable symver
2470         SHFLAGS='-shared'
2471         oss_indev_extralibs="-lossaudio"
2472         oss_outdev_extralibs="-lossaudio"
2473         ;;
2474     dragonfly)
2475         enable malloc_aligned
2476         disable symver
2477         ;;
2478     freebsd)
2479         enable malloc_aligned
2480         ;;
2481     bsd/os)
2482         add_extralibs -lpoll -lgnugetopt
2483         ;;
2484     darwin)
2485         enable malloc_aligned
2486         gas="gas-preprocessor.pl $cc"
2487         enabled ppc && add_asflags -force_cpusubtype_ALL
2488         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2489         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2490         add_ldflags -Wl,-dynamic,-search_paths_first
2491         SLIBSUF=".dylib"
2492         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2493         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2494         AVSERVERLDFLAGS=-Wl,-bind_at_load
2495         objformat="macho"
2496         enabled x86_64 && objformat="macho64"
2497         enabled_any pic shared ||
2498             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2499         ;;
2500     mingw32*)
2501         if test $target_os = "mingw32ce"; then
2502             disable network
2503         else
2504             target_os=mingw32
2505         fi
2506         LIBTARGET=i386
2507         if enabled x86_64; then
2508             enable malloc_aligned
2509             LIBTARGET="i386:x86-64"
2510         elif enabled arm; then
2511             LIBTARGET=arm-wince
2512         fi
2513         shlibdir_default="$bindir_default"
2514         SLIBPREF=""
2515         SLIBSUF=".dll"
2516         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2517         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2518         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2519         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2520         SLIB_INSTALL_LINKS=
2521         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2522         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2523         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'
2524         objformat="win32"
2525         dlltool="${cross_prefix}dlltool"
2526         enable dos_paths
2527         check_cflags -fno-common
2528         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2529                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2530                 die "ERROR: MinGW runtime version must be >= 3.15."
2531         add_cppflags -U__STRICT_ANSI__
2532         ;;
2533     cygwin*)
2534         target_os=cygwin
2535         shlibdir_default="$bindir_default"
2536         SLIBPREF="cyg"
2537         SLIBSUF=".dll"
2538         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2539         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2540         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2541         objformat="win32"
2542         enable dos_paths
2543         check_cflags -fno-common
2544         add_cppflags -U__STRICT_ANSI__
2545         ;;
2546     *-dos|freedos|opendos)
2547         network_extralibs="-lsocket"
2548         objformat="coff"
2549         enable dos_paths
2550         add_cppflags -U__STRICT_ANSI__
2551         ;;
2552     linux)
2553         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2554         enable dv1394
2555         ;;
2556     irix*)
2557         target_os=irix
2558         ranlib="echo ignoring ranlib"
2559         ;;
2560     os/2*)
2561         ln_s="cp -f"
2562         objformat="aout"
2563         add_cppflags -D_GNU_SOURCE
2564         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2565         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2566         AVSERVERLDFLAGS=""
2567         LIBSUF="_s.a"
2568         SLIBPREF=""
2569         SLIBSUF=".dll"
2570         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2571         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2572         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2573           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2574           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2575           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2576           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2577           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2578         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2579           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2580         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2581         enable dos_paths
2582         ;;
2583     gnu/kfreebsd)
2584         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2585         ;;
2586     gnu)
2587         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2588         ;;
2589     qnx)
2590         add_cppflags -D_QNX_SOURCE
2591         network_extralibs="-lsocket"
2592         ;;
2593     symbian)
2594         SLIBSUF=".dll"
2595         enable dos_paths
2596         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2597         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2598         add_ldflags -Wl,--target1-abs,--no-undefined \
2599                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2600                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2601         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2602                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2603                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2604         ;;
2605     none)
2606         ;;
2607     *)
2608         die "Unknown OS '$target_os'."
2609         ;;
2610 esac
2611
2612 esc(){
2613     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
2614 }
2615
2616 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
2617
2618 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2619
2620 set_default $PATHS_LIST
2621
2622 # we need to build at least one lib type
2623 if ! enabled_any static shared; then
2624     cat <<EOF
2625 At least one library type must be built.
2626 Specify --enable-static to build the static libraries or --enable-shared to
2627 build the shared libraries as well. To only build the shared libraries specify
2628 --disable-static in addition to --enable-shared.
2629 EOF
2630     exit 1;
2631 fi
2632
2633 die_license_disabled() {
2634     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2635 }
2636
2637 die_license_disabled gpl libcdio
2638 die_license_disabled gpl libx264
2639 die_license_disabled gpl libxavs
2640 die_license_disabled gpl libxvid
2641 die_license_disabled gpl x11grab
2642
2643 die_license_disabled nonfree libfaac
2644 die_license_disabled nonfree openssl
2645
2646 die_license_disabled version3 libopencore_amrnb
2647 die_license_disabled version3 libopencore_amrwb
2648 die_license_disabled version3 libvo_aacenc
2649 die_license_disabled version3 libvo_amrwbenc
2650
2651 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2652
2653 disabled optimizations || check_cflags -fomit-frame-pointer
2654
2655 enable_pic() {
2656     enable pic
2657     add_cppflags -DPIC
2658     add_cflags   -fPIC
2659     add_asflags  -fPIC
2660 }
2661
2662 enabled pic && enable_pic
2663
2664 check_cc <<EOF || die "Symbol mangling check failed."
2665 int ff_extern;
2666 EOF
2667 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2668 extern_prefix=${sym%%ff_extern*}
2669
2670 check_cc <<EOF && enable inline_asm
2671 void foo(void) { __asm__ volatile ("" ::); }
2672 EOF
2673
2674 _restrict=
2675 for restrict_keyword in restrict __restrict__ __restrict; do
2676     check_cc <<EOF && _restrict=$restrict_keyword && break
2677 void foo(char * $restrict_keyword p);
2678 EOF
2679 done
2680
2681 check_cc <<EOF && enable attribute_packed
2682 struct { int x; } __attribute__((packed)) x;
2683 EOF
2684
2685 check_cc <<EOF && enable attribute_may_alias
2686 union { int x; } __attribute__((may_alias)) x;
2687 EOF
2688
2689 check_cc <<EOF || die "endian test failed"
2690 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2691 EOF
2692 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2693
2694 if enabled alpha; then
2695
2696     check_cflags -mieee
2697
2698 elif enabled arm; then
2699
2700     enabled thumb && check_cflags -mthumb || check_cflags -marm
2701     nogas=die
2702
2703     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2704         enable vfp_args
2705     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2706         case "${cross_prefix:-$cc}" in
2707             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2708             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2709 __asm__ (".eabi_attribute 28, 1");
2710 int main(void) { return 0; }
2711 EOF
2712         esac
2713         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2714     fi
2715
2716     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2717     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2718     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2719     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2720     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2721     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2722
2723     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2724
2725     enabled_all armv6t2 shared !pic && enable_pic
2726
2727 elif enabled mips; then
2728
2729     check_asm loongson '"dmult.g $1, $2, $3"'
2730     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2731
2732 elif enabled ppc; then
2733
2734     enable local_aligned_8 local_aligned_16
2735
2736     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2737     check_asm ibm_asm   '"add 0, 0, 0"'
2738     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2739     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2740
2741     # AltiVec flags: The FSF version of GCC differs from the Apple version
2742     if enabled altivec; then
2743         nogas=warn
2744         check_cflags -maltivec -mabi=altivec &&
2745         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2746         check_cflags -faltivec
2747
2748         # check if our compiler supports Motorola AltiVec C API
2749         check_cc <<EOF || disable altivec
2750 $inc_altivec_h
2751 int main(void) {
2752     vector signed int v1, v2, v3;
2753     v1 = vec_add(v2,v3);
2754     return 0;
2755 }
2756 EOF
2757
2758         # check if our compiler supports braces for vector declarations
2759         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2760 $inc_altivec_h
2761 int main (void) { (vector int) {1}; return 0; }
2762 EOF
2763     fi
2764
2765 elif enabled sparc; then
2766
2767     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2768         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2769
2770 elif enabled x86; then
2771
2772     enable local_aligned_8 local_aligned_16
2773
2774     # check whether EBP is available on x86
2775     # As 'i' is stored on the stack, this program will crash
2776     # if the base pointer is used to access it because the
2777     # base pointer is cleared in the inline assembly code.
2778     check_exec_crash <<EOF && enable ebp_available
2779     volatile int i=0;
2780     __asm__ volatile (
2781         "xorl %%ebp, %%ebp"
2782     ::: "%ebp");
2783     return i;
2784 EOF
2785
2786     # check whether EBX is available on x86
2787     check_asm ebx_available '""::"b"(0)' &&
2788         check_asm ebx_available '"":::"%ebx"'
2789
2790     # check whether xmm clobbers are supported
2791     check_asm xmm_clobbers '"":::"%xmm0"'
2792
2793     # check whether binutils is new enough to compile SSSE3/MMX2
2794     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2795     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2796
2797     if ! disabled_any asm mmx yasm; then
2798         if check_cmd $yasmexe --version; then
2799             enabled x86_64 && yasm_extra="-m amd64"
2800             yasm_debug="-g dwarf2"
2801         elif check_cmd nasm -v; then
2802             yasmexe=nasm
2803             yasm_debug="-g -F dwarf"
2804             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2805         fi
2806
2807         YASMFLAGS="-f $objformat $yasm_extra"
2808         enabled pic               && append YASMFLAGS "-DPIC"
2809         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2810         case "$objformat" in
2811             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2812         esac
2813
2814         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2815             die "yasm not found, use --disable-yasm for a crippled build"
2816         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2817     fi
2818
2819     case "$cpu" in
2820         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2821             disable fast_clz
2822         ;;
2823     esac
2824
2825 fi
2826
2827 if enabled asm; then
2828     as=${gas:=$as}
2829     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2830         $nogas "GNU assembler not found, install gas-preprocessor"
2831 fi
2832
2833 check_ldflags -Wl,--as-needed
2834
2835 if check_func dlopen; then
2836     ldl=
2837 elif check_func dlopen -ldl; then
2838     ldl=-ldl
2839 fi
2840
2841 if enabled network; then
2842     check_type "sys/types.h sys/socket.h" socklen_t
2843     check_type netdb.h "struct addrinfo"
2844     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2845     check_type netinet/in.h "struct sockaddr_in6"
2846     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2847     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2848     # Prefer arpa/inet.h over winsock2
2849     if check_header arpa/inet.h ; then
2850         check_func closesocket
2851     elif check_header winsock2.h ; then
2852         check_func_headers winsock2.h closesocket -lws2 && \
2853             network_extralibs="-lws2" || \
2854         { check_func_headers winsock2.h closesocket -lws2_32 && \
2855             network_extralibs="-lws2_32"; }
2856         check_type ws2tcpip.h socklen_t
2857         check_type ws2tcpip.h "struct addrinfo"
2858         check_type ws2tcpip.h "struct ipv6_mreq"
2859         check_type ws2tcpip.h "struct sockaddr_in6"
2860         check_type ws2tcpip.h "struct sockaddr_storage"
2861         check_struct winsock2.h "struct sockaddr" sa_len
2862     else
2863         disable network
2864     fi
2865 fi
2866
2867 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2868 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2869
2870 check_func  fcntl
2871 check_func  fork
2872 check_func  getaddrinfo $network_extralibs
2873 check_func  gethrtime
2874 check_func  getrusage
2875 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2876 check_func  inet_aton $network_extralibs
2877 check_func  isatty
2878 check_func  localtime_r
2879 check_func  ${malloc_prefix}memalign            && enable memalign
2880 check_func  mkstemp
2881 check_func  mmap
2882 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2883 check_func  setrlimit
2884 check_func  strerror_r
2885 check_func  strptime
2886 check_func  strtok_r
2887 check_func  sched_getaffinity
2888 check_func  sysconf
2889 check_func  sysctl
2890 check_func_headers io.h setmode
2891 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2892 check_func_headers windows.h GetProcessAffinityMask
2893 check_func_headers windows.h GetProcessTimes
2894 check_func_headers windows.h MapViewOfFile
2895 check_func_headers windows.h VirtualAlloc
2896
2897 check_header dlfcn.h
2898 check_header dxva2api.h
2899 check_header malloc.h
2900 check_header poll.h
2901 check_header sys/mman.h
2902 check_header sys/param.h
2903 check_header sys/resource.h
2904 check_header sys/select.h
2905 check_header vdpau/vdpau.h
2906 check_header vdpau/vdpau_x11.h
2907 check_header X11/extensions/XvMClib.h
2908
2909 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2910 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2911
2912 if ! disabled w32threads && ! enabled pthreads; then
2913     check_func _beginthreadex && enable w32threads
2914 fi
2915
2916 # check for some common methods of building with pthread support
2917 # do this before the optional library checks as some of them require pthreads
2918 if ! disabled pthreads && ! enabled w32threads; then
2919     enable pthreads
2920     if check_func pthread_create; then
2921         :
2922     elif check_func pthread_create -pthread; then
2923         add_cflags -pthread
2924         add_extralibs -pthread
2925     elif check_func pthread_create -pthreads; then
2926         add_cflags -pthreads
2927         add_extralibs -pthreads
2928     elif check_func pthread_create -lpthreadGC2; then
2929         add_extralibs -lpthreadGC2
2930     elif ! check_lib pthread.h pthread_create -lpthread; then
2931         disable pthreads
2932     fi
2933 fi
2934
2935 for thread in $THREADS_LIST; do
2936     if enabled $thread; then
2937         test -n "$thread_type" &&
2938             die "ERROR: Only one thread type must be selected." ||
2939             thread_type="$thread"
2940     fi
2941 done
2942
2943 check_lib math.h sin -lm && LIBM="-lm"
2944 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2945
2946 check_mathfunc exp2
2947 check_mathfunc exp2f
2948 check_mathfunc llrint
2949 check_mathfunc llrintf
2950 check_mathfunc log2
2951 check_mathfunc log2f
2952 check_mathfunc lrint
2953 check_mathfunc lrintf
2954 check_mathfunc round
2955 check_mathfunc roundf
2956 check_mathfunc trunc
2957 check_mathfunc truncf
2958
2959 # these are off by default, so fail if requested and not available
2960 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2961 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2962 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
2963 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2964 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2965 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2966 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2967 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2968 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2969 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2970 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2971 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2972 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
2973 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2974 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2975 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2976 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2977 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2978 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2979 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2980 enabled libvpx     && {
2981     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2982                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2983     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2984                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2985 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2986                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2987                         die "ERROR: libx264 version must be >= 0.118."; }
2988 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2989 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2990 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
2991                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
2992                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
2993                         die "ERROR: openssl not found"; }
2994
2995 # libdc1394 check
2996 if enabled libdc1394; then
2997     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2998         enable libdc1394_2; } ||
2999     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3000         enable libdc1394_1; } ||
3001     die "ERROR: No version of libdc1394 found "
3002 fi
3003
3004 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3005     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3006     enable sdl &&
3007     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3008 fi
3009
3010 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3011
3012 check_header linux/fb.h
3013 check_header linux/videodev2.h
3014 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3015
3016 check_header sys/videoio.h
3017
3018 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3019 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3020 # w32api 3.12 had it defined wrong
3021 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3022
3023 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3024 { check_header dev/bktr/ioctl_meteor.h &&
3025   check_header dev/bktr/ioctl_bt848.h; } ||
3026 { check_header machine/ioctl_meteor.h &&
3027   check_header machine/ioctl_bt848.h; } ||
3028 { check_header dev/video/meteor/ioctl_meteor.h &&
3029   check_header dev/video/bktr/ioctl_bt848.h; } ||
3030 check_header dev/ic/bt8xx.h
3031
3032 check_header sndio.h
3033 check_header sys/soundcard.h
3034 check_header soundcard.h
3035
3036 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3037
3038 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
3039
3040 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3041
3042 enabled libcdio &&
3043     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3044
3045 enabled x11grab                                           &&
3046 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3047 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3048 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3049
3050 # check for VDA header
3051 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3052     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3053 fi
3054
3055 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3056 check_cpp_condition \
3057     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3058     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3059       disable vdpau; }
3060 fi
3061
3062 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3063
3064 # add some useful compiler flags if supported
3065 check_cflags -Wdeclaration-after-statement
3066 check_cflags -Wall
3067 check_cflags -Wno-parentheses
3068 check_cflags -Wno-switch
3069 check_cflags -Wno-format-zero-length
3070 check_cflags -Wdisabled-optimization
3071 check_cflags -Wpointer-arith
3072 check_cflags -Wredundant-decls
3073 check_cflags -Wno-pointer-sign
3074 check_cflags -Wcast-qual
3075 check_cflags -Wwrite-strings
3076 check_cflags -Wtype-limits
3077 check_cflags -Wundef
3078 check_cflags -Wmissing-prototypes
3079 check_cflags -Wstrict-prototypes
3080 enabled extra_warnings && check_cflags -Winline
3081
3082 # add some linker flags
3083 check_ldflags -Wl,--warn-common
3084 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3085 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3086
3087 enabled xmm_clobber_test &&                             \
3088     check_ldflags -Wl,--wrap,avcodec_open2              \
3089                   -Wl,--wrap,avcodec_decode_audio4      \
3090                   -Wl,--wrap,avcodec_decode_video2      \
3091                   -Wl,--wrap,avcodec_decode_subtitle2   \
3092                   -Wl,--wrap,avcodec_encode_audio2      \
3093                   -Wl,--wrap,avcodec_encode_video       \
3094                   -Wl,--wrap,avcodec_encode_subtitle    \
3095                   -Wl,--wrap,sws_scale ||               \
3096     disable xmm_clobber_test
3097
3098 echo "X{};" > $TMPV
3099 if test_ldflags -Wl,--version-script,$TMPV; then
3100     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3101     check_cc <<EOF && enable symver_asm_label
3102 void ff_foo(void) __asm__ ("av_foo@VERSION");
3103 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3104 EOF
3105     check_cc <<EOF && enable symver_gnu_asm
3106 __asm__(".symver ff_foo,av_foo@VERSION");
3107 void ff_foo(void) {}
3108 EOF
3109 fi
3110
3111 if [ -n "$optflags" ]; then
3112     add_cflags $optflags
3113 elif enabled small; then
3114     add_cflags $size_cflags
3115 elif enabled optimizations; then
3116     add_cflags $speed_cflags
3117 else
3118     add_cflags $noopt_cflags
3119 fi
3120 check_cflags -fno-math-errno
3121 check_cflags -fno-signed-zeros
3122
3123 if enabled icc; then
3124     # Just warnings, no remarks
3125     check_cflags -w1
3126     # -wd: Disable following warnings
3127     # 144, 167, 556: -Wno-pointer-sign
3128     # 1292: attribute "foo" ignored
3129     # 10006: ignoring unknown option -fno-signed-zeros
3130     # 10148: ignoring unknown option -Wno-parentheses
3131     # 10156: ignoring option '-W'; no argument required
3132     check_cflags -wd144,167,556,1292,10006,10148,10156
3133     # 11030: Warning unknown option --as-needed
3134     # 10156: ignoring option '-export'; no argument required
3135     check_ldflags -wd10156,11030
3136     # Allow to compile with optimizations
3137     check_ldflags -march=$cpu
3138     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3139     enable ebp_available
3140     if enabled x86_32; then
3141         test ${icc_version%%.*} -ge 11 && \
3142             check_cflags -falign-stack=maintain-16-byte || \
3143             disable aligned_stack
3144     fi
3145 elif enabled ccc; then
3146     # disable some annoying warnings
3147     add_cflags -msg_disable cvtu32to64
3148     add_cflags -msg_disable embedcomment
3149     add_cflags -msg_disable needconstext
3150     add_cflags -msg_disable nomainieee
3151     add_cflags -msg_disable ptrmismatch1
3152     add_cflags -msg_disable unreachcode
3153 elif enabled gcc; then
3154     check_cflags -fno-tree-vectorize
3155     check_cflags -Werror=implicit-function-declaration
3156     check_cflags -Werror=missing-prototypes
3157     check_cflags -Werror=declaration-after-statement
3158 elif enabled llvm_gcc; then
3159     check_cflags -mllvm -stack-alignment=16
3160 elif enabled clang; then
3161     check_cflags -mllvm -stack-alignment=16
3162     check_cflags -Qunused-arguments
3163 elif enabled armcc; then
3164     # 2523: use of inline assembler is deprecated
3165     add_cflags -W${armcc_opt},--diag_suppress=2523
3166     add_cflags -W${armcc_opt},--diag_suppress=1207
3167     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3168     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3169     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3170     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3171 elif enabled tms470; then
3172     add_cflags -pds=824 -pds=837
3173 elif enabled pathscale; then
3174     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3175 fi
3176
3177 enabled_any $THREADS_LIST      && enable threads
3178
3179 check_deps $CONFIG_LIST       \
3180            $CONFIG_EXTRA      \
3181            $HAVE_LIST         \
3182            $ALL_COMPONENTS    \
3183            $ALL_TESTS         \
3184
3185 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3186
3187 ! enabled_any memalign posix_memalign malloc_aligned &&
3188     enabled_any $need_memalign && enable memalign_hack
3189
3190 echo "install prefix            $prefix"
3191 echo "source path               $source_path"
3192 echo "C compiler                $cc"
3193 echo "ARCH                      $arch ($cpu)"
3194 if test "$build_suffix" != ""; then
3195     echo "build suffix              $build_suffix"
3196 fi
3197 if test "$extra_version" != ""; then
3198     echo "version string suffix     $extra_version"
3199 fi
3200 echo "big-endian                ${bigendian-no}"
3201 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3202 if enabled x86; then
3203     echo "${yasmexe}                      ${yasm-no}"
3204     echo "MMX enabled               ${mmx-no}"
3205     echo "MMX2 enabled              ${mmx2-no}"
3206     echo "3DNow! enabled            ${amd3dnow-no}"
3207     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3208     echo "SSE enabled               ${sse-no}"
3209     echo "SSSE3 enabled             ${ssse3-no}"
3210     echo "AVX enabled               ${avx-no}"
3211     echo "CMOV enabled              ${cmov-no}"
3212     echo "CMOV is fast              ${fast_cmov-no}"
3213     echo "EBX available             ${ebx_available-no}"
3214     echo "EBP available             ${ebp_available-no}"
3215 fi
3216 if enabled arm; then
3217     echo "ARMv5TE enabled           ${armv5te-no}"
3218     echo "ARMv6 enabled             ${armv6-no}"
3219     echo "ARMv6T2 enabled           ${armv6t2-no}"
3220     echo "ARM VFP enabled           ${armvfp-no}"
3221     echo "NEON enabled              ${neon-no}"
3222 fi
3223 if enabled mips; then
3224     echo "MMI enabled               ${mmi-no}"
3225 fi
3226 if enabled ppc; then
3227     echo "AltiVec enabled           ${altivec-no}"
3228     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3229     echo "dcbzl available           ${dcbzl-no}"
3230 fi
3231 if enabled sparc; then
3232     echo "VIS enabled               ${vis-no}"
3233 fi
3234 echo "debug symbols             ${debug-no}"
3235 echo "optimize for size         ${small-no}"
3236 echo "optimizations             ${optimizations-no}"
3237 echo "static                    ${static-no}"
3238 echo "shared                    ${shared-no}"
3239 echo "new filter support        ${avfilter-no}"
3240 echo "network support           ${network-no}"
3241 echo "threading support         ${thread_type-no}"
3242 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3243 echo "SDL support               ${sdl-no}"
3244 echo "libdxva2 enabled          ${dxva2-no}"
3245 echo "libva enabled             ${vaapi-no}"
3246 echo "libvdpau enabled          ${vdpau-no}"
3247 echo "AVISynth enabled          ${avisynth-no}"
3248 echo "frei0r enabled            ${frei0r-no}"
3249 echo "gnutls enabled            ${gnutls-no}"
3250 echo "libcdio support           ${libcdio-no}"
3251 echo "libdc1394 support         ${libdc1394-no}"
3252 echo "libfaac enabled           ${libfaac-no}"
3253 echo "libgsm enabled            ${libgsm-no}"
3254 echo "libmp3lame enabled        ${libmp3lame-no}"
3255 echo "libnut enabled            ${libnut-no}"
3256 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3257 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3258 echo "libopencv support         ${libopencv-no}"
3259 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3260 echo "libpulse enabled          ${libpulse-no}"
3261 echo "librtmp enabled           ${librtmp-no}"
3262 echo "libschroedinger enabled   ${libschroedinger-no}"
3263 echo "libspeex enabled          ${libspeex-no}"
3264 echo "libtheora enabled         ${libtheora-no}"
3265 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3266 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3267 echo "libvorbis enabled         ${libvorbis-no}"
3268 echo "libvpx enabled            ${libvpx-no}"
3269 echo "libx264 enabled           ${libx264-no}"
3270 echo "libxavs enabled           ${libxavs-no}"
3271 echo "libxvid enabled           ${libxvid-no}"
3272 echo "openssl enabled           ${openssl-no}"
3273 echo "zlib enabled              ${zlib-no}"
3274 echo "bzlib enabled             ${bzlib-no}"
3275 echo
3276
3277 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3278     echo "Enabled ${type}s:"
3279     eval list=\$$(toupper $type)_LIST
3280     print_enabled '_*' $list | sort | pr -r -3 -t
3281     echo
3282 done
3283
3284 license="LGPL version 2.1 or later"
3285 if enabled nonfree; then
3286     license="nonfree and unredistributable"
3287 elif enabled gplv3; then
3288     license="GPL version 3 or later"
3289 elif enabled lgplv3; then
3290     license="LGPL version 3 or later"
3291 elif enabled gpl; then
3292     license="GPL version 2 or later"
3293 fi
3294
3295 echo "License: $license"
3296
3297 echo "Creating config.mak and config.h..."
3298
3299 test -e Makefile || $ln_s "$source_path/Makefile" .
3300
3301 config_files="$TMPH config.mak"
3302
3303 cat > config.mak <<EOF
3304 # Automatically generated by configure - do not modify!
3305 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3306 prefix=$prefix
3307 LIBDIR=\$(DESTDIR)$libdir
3308 SHLIBDIR=\$(DESTDIR)$shlibdir
3309 INCDIR=\$(DESTDIR)$incdir
3310 BINDIR=\$(DESTDIR)$bindir
3311 DATADIR=\$(DESTDIR)$datadir
3312 MANDIR=\$(DESTDIR)$mandir
3313 SRC_PATH=$source_path
3314 CC_IDENT=$cc_ident
3315 ARCH=$arch
3316 CC=$cc
3317 AS=$as
3318 LD=$ld
3319 DEPCC=$dep_cc
3320 YASM=$yasmexe
3321 YASMDEP=$yasmexe
3322 AR=$ar
3323 RANLIB=$ranlib
3324 LN_S=$ln_s
3325 CPPFLAGS=$CPPFLAGS
3326 CFLAGS=$CFLAGS
3327 ASFLAGS=$ASFLAGS
3328 AS_O=$CC_O
3329 CC_O=$CC_O
3330 DLLTOOL=$dlltool
3331 LDFLAGS=$LDFLAGS
3332 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3333 SHFLAGS=$SHFLAGS
3334 YASMFLAGS=$YASMFLAGS
3335 BUILDSUF=$build_suffix
3336 FULLNAME=$FULLNAME
3337 LIBPREF=$LIBPREF
3338 LIBSUF=$LIBSUF
3339 LIBNAME=$LIBNAME
3340 SLIBPREF=$SLIBPREF
3341 SLIBSUF=$SLIBSUF
3342 EXESUF=$EXESUF
3343 EXTRA_VERSION=$extra_version
3344 DEPFLAGS=$DEPFLAGS
3345 CCDEP=$CCDEP
3346 ASDEP=$ASDEP
3347 CC_DEPFLAGS=$CC_DEPFLAGS
3348 AS_DEPFLAGS=$AS_DEPFLAGS
3349 HOSTCC=$host_cc
3350 HOSTCFLAGS=$host_cflags
3351 HOSTEXESUF=$HOSTEXESUF
3352 HOSTLDFLAGS=$host_ldflags
3353 HOSTLIBS=$host_libs
3354 TARGET_EXEC=$target_exec
3355 TARGET_PATH=$target_path
3356 SDL_LIBS=$sdl_libs
3357 SDL_CFLAGS=$sdl_cflags
3358 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3359 EXTRALIBS=$extralibs
3360 INSTALL=install
3361 LIBTARGET=${LIBTARGET}
3362 SLIBNAME=${SLIBNAME}
3363 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3364 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3365 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3366 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3367 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3368 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3369 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3370 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3371 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3372 EOF
3373
3374 get_version(){
3375     name=$1
3376     file=$source_path/$2
3377     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3378     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3379     lcname=$(tolower $name)
3380     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3381     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3382 }
3383
3384 get_version LIBAVCODEC  libavcodec/version.h
3385 get_version LIBAVDEVICE libavdevice/avdevice.h
3386 get_version LIBAVFILTER libavfilter/version.h
3387 get_version LIBAVFORMAT libavformat/version.h
3388 get_version LIBAVUTIL   libavutil/avutil.h
3389 get_version LIBSWSCALE  libswscale/swscale.h
3390
3391 cat > $TMPH <<EOF
3392 /* Automatically generated by configure - do not modify! */
3393 #ifndef LIBAV_CONFIG_H
3394 #define LIBAV_CONFIG_H
3395 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3396 #define LIBAV_LICENSE "$(c_escape $license)"
3397 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3398 #define CC_TYPE "$cc_type"
3399 #define CC_VERSION $cc_version
3400 #define restrict $_restrict
3401 #define EXTERN_PREFIX "${extern_prefix}"
3402 #define EXTERN_ASM ${extern_prefix}
3403 #define SLIBSUF "$SLIBSUF"
3404 EOF
3405
3406 test -n "$malloc_prefix" &&
3407     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3408
3409 if enabled small || disabled optimizations; then
3410     echo "#undef  av_always_inline"  >> $TMPH
3411     if enabled small; then
3412         echo "#define av_always_inline inline"  >> $TMPH
3413     else
3414         echo "#define av_always_inline av_unused"  >> $TMPH
3415     fi
3416 fi
3417
3418 if enabled yasm; then
3419     append config_files $TMPASM
3420     printf '' >$TMPASM
3421 fi
3422
3423 print_config ARCH_   "$config_files" $ARCH_LIST
3424 print_config HAVE_   "$config_files" $HAVE_LIST
3425 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3426                                      $CONFIG_EXTRA      \
3427                                      $ALL_COMPONENTS    \
3428
3429 cat >>config.mak <<EOF
3430 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3431 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3432 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3433 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3434 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3435 EOF
3436
3437 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3438
3439 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3440 cp_if_changed $TMPH config.h
3441 touch .config
3442
3443 enabled yasm && cp_if_changed $TMPASM config.asm
3444
3445 cat > $TMPH <<EOF
3446 /* Generated by ffconf */
3447 #ifndef AVUTIL_AVCONFIG_H
3448 #define AVUTIL_AVCONFIG_H
3449 EOF
3450
3451 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3452
3453 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3454
3455 cp_if_changed $TMPH libavutil/avconfig.h
3456
3457 test -n "$WARNINGS" && printf "\n$WARNINGS"
3458
3459 # build pkg-config files
3460
3461 pkgconfig_generate(){
3462 name=$1
3463 shortname=${name#lib}${build_suffix}
3464 comment=$2
3465 version=$3
3466 libs=$4
3467 requires=$5
3468 enabled ${name#lib} || return 0
3469 mkdir -p $name
3470 cat <<EOF > $name/$name.pc
3471 prefix=$prefix
3472 exec_prefix=\${prefix}
3473 libdir=$libdir
3474 includedir=$incdir
3475
3476 Name: $name
3477 Description: $comment
3478 Version: $version
3479 Requires: $(enabled shared || echo $requires)
3480 Requires.private: $(enabled shared && echo $requires)
3481 Conflicts:
3482 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3483 Libs.private: $(enabled shared && echo $libs)
3484 Cflags: -I\${includedir}
3485 EOF
3486 cat <<EOF > $name/$name-uninstalled.pc
3487 prefix=
3488 exec_prefix=
3489 libdir=\${pcfiledir}
3490 includedir=${source_path}
3491
3492 Name: $name
3493 Description: $comment
3494 Version: $version
3495 Requires: $requires
3496 Conflicts:
3497 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3498 Cflags: -I\${includedir}
3499 EOF
3500 }
3501
3502 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3503 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3504 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3505 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3506 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3507 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"