Merge commit 'b2c087871dafc7d030b2d48457ddff597dfd4925'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg 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 FFMPEG, 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 FFmpeg."
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 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-ffmpeg         disable ffmpeg build
84   --disable-avconv         disable avconv build
85   --disable-ffplay         disable ffplay build
86   --disable-ffprobe        disable ffprobe build
87   --disable-ffserver       disable ffserver build
88   --disable-avdevice       disable libavdevice build
89   --disable-avcodec        disable libavcodec build
90   --disable-avformat       disable libavformat build
91   --disable-swscale        disable libswscale build
92   --disable-postproc       disable libpostproc build
93   --disable-avfilter       disable video filter support [no]
94   --disable-pthreads       disable pthreads [auto]
95   --enable-w32threads      use Win32 threads [no]
96   --enable-x11grab         enable X11 grabbing [no]
97   --disable-network        disable network support [no]
98   --enable-gray            enable full grayscale support (slower color)
99   --disable-swscale-alpha  disable alpha channel support in swscale
100   --disable-fastdiv        disable table-based division
101   --enable-small           optimize for size instead of speed
102   --disable-aandct         disable AAN DCT code
103   --disable-dct            disable DCT code
104   --disable-fft            disable FFT code
105   --disable-golomb         disable Golomb code
106   --disable-huffman        disable Huffman code
107   --disable-lpc            disable LPC code
108   --disable-mdct           disable MDCT code
109   --disable-rdft           disable RDFT code
110   --enable-vaapi           enable VAAPI code [autodetect]
111   --enable-vdpau           enable VDPAU code [autodetect]
112   --disable-dxva2          disable DXVA2 code
113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
115   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
116   --disable-everything     disable all components listed below
117   --disable-encoder=NAME   disable encoder NAME
118   --enable-encoder=NAME    enable encoder NAME
119   --disable-encoders       disable all encoders
120   --disable-decoder=NAME   disable decoder NAME
121   --enable-decoder=NAME    enable decoder NAME
122   --disable-decoders       disable all decoders
123   --disable-hwaccel=NAME   disable hwaccel NAME
124   --enable-hwaccel=NAME    enable hwaccel NAME
125   --disable-hwaccels       disable all hwaccels
126   --disable-muxer=NAME     disable muxer NAME
127   --enable-muxer=NAME      enable muxer NAME
128   --disable-muxers         disable all muxers
129   --disable-demuxer=NAME   disable demuxer NAME
130   --enable-demuxer=NAME    enable demuxer NAME
131   --disable-demuxers       disable all demuxers
132   --enable-parser=NAME     enable parser NAME
133   --disable-parser=NAME    disable parser NAME
134   --disable-parsers        disable all parsers
135   --enable-bsf=NAME        enable bitstream filter NAME
136   --disable-bsf=NAME       disable bitstream filter NAME
137   --disable-bsfs           disable all bitstream filters
138   --enable-protocol=NAME   enable protocol NAME
139   --disable-protocol=NAME  disable protocol NAME
140   --disable-protocols      disable all protocols
141   --disable-indev=NAME     disable input device NAME
142   --disable-outdev=NAME    disable output device NAME
143   --disable-indevs         disable input devices
144   --disable-outdevs        disable output devices
145   --disable-devices        disable all devices
146   --enable-filter=NAME     enable filter NAME
147   --disable-filter=NAME    disable filter NAME
148   --disable-filters        disable all filters
149   --list-decoders          show all available decoders
150   --list-encoders          show all available encoders
151   --list-hwaccels          show all available hardware accelerators
152   --list-muxers            show all available muxers
153   --list-demuxers          show all available demuxers
154   --list-parsers           show all available parsers
155   --list-protocols         show all available protocols
156   --list-bsfs              show all available bitstream filters
157   --list-indevs            show all available input devices
158   --list-outdevs           show all available output devices
159   --list-filters           show all available filters
160
161 External library support:
162   --enable-avisynth        enable reading of AVISynth script files [no]
163   --enable-bzlib           enable bzlib [autodetect]
164   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
165   --enable-frei0r          enable frei0r video filtering
166   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
167   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
168   --enable-libopencv       enable video filtering via libopencv [no]
169   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
170                            and libraw1394 [no]
171   --enable-libdirac        enable Dirac support via libdirac [no]
172   --enable-libfaac         enable FAAC support via libfaac [no]
173   --enable-libfreetype     enable libfreetype [no]
174   --enable-libgsm          enable GSM support via libgsm [no]
175   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
176   --enable-libnut          enable NUT (de)muxing via libnut,
177                            native (de)muxer exists [no]
178   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
179   --enable-librtmp         enable RTMP[E] support via librtmp [no]
180   --enable-libschroedinger enable Dirac support via libschroedinger [no]
181   --enable-libspeex        enable Speex decoding via libspeex [no]
182   --enable-libtheora       enable Theora encoding via libtheora [no]
183   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
184   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
185   --enable-libvorbis       enable Vorbis encoding via libvorbis,
186                            native implementation exists [no]
187   --enable-libvpx          enable VP8 support via libvpx [no]
188   --enable-libx264         enable H.264 encoding via x264 [no]
189   --enable-libxavs         enable AVS encoding via xavs [no]
190   --enable-libxvid         enable Xvid encoding via xvidcore,
191                            native MPEG-4/Xvid encoder exists [no]
192   --enable-openal          enable OpenAL 1.1 capture support [no]
193   --enable-mlib            enable Sun medialib [no]
194   --enable-zlib            enable zlib [autodetect]
195
196 Advanced options (experts only):
197   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
198   --enable-cross-compile   assume a cross-compiler is used
199   --sysroot=PATH           root of cross-build tree
200   --sysinclude=PATH        location of cross-build system headers
201   --target-os=OS           compiler targets OS [$target_os]
202   --target-exec=CMD        command to run executables on target
203   --target-path=DIR        path to view of build directory on target
204   --nm=NM                  use nm tool
205   --ar=AR                  use archive tool AR [$ar_default]
206   --as=AS                  use assembler AS [$as_default]
207   --cc=CC                  use C compiler CC [$cc_default]
208   --ld=LD                  use linker LD
209   --host-cc=HOSTCC         use host C compiler HOSTCC
210   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
211   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
212   --host-libs=HLIBS        use libs HLIBS when linking for host
213   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
214   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
215   --extra-libs=ELIBS       add ELIBS [$ELIBS]
216   --extra-version=STRING   version string suffix []
217   --build-suffix=SUFFIX    library name suffix []
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --disable-asm            disable all assembler optimizations
222   --disable-altivec        disable AltiVec optimizations
223   --disable-amd3dnow       disable 3DNow! optimizations
224   --disable-amd3dnowext    disable 3DNow! extended optimizations
225   --disable-mmx            disable MMX optimizations
226   --disable-mmx2           disable MMX2 optimizations
227   --disable-sse            disable SSE optimizations
228   --disable-ssse3          disable SSSE3 optimizations
229   --disable-avx            disable AVX optimizations
230   --disable-armv5te        disable armv5te optimizations
231   --disable-armv6          disable armv6 optimizations
232   --disable-armv6t2        disable armv6t2 optimizations
233   --disable-armvfp         disable ARM VFP optimizations
234   --disable-iwmmxt         disable iwmmxt optimizations
235   --disable-mmi            disable MMI optimizations
236   --disable-neon           disable neon optimizations
237   --disable-vis            disable VIS optimizations
238   --disable-yasm           disable use of yasm assembler
239   --enable-pic             build position-independent code
240   --malloc-prefix=PFX      prefix malloc and related names with PFX
241   --enable-sram            allow use of on-chip SRAM
242   --disable-symver         disable symbol versioning
243   --optflags               override optimization-related compiler flags
244
245 Developer options (useful when working on FFmpeg itself):
246   --disable-debug          disable debugging symbols
247   --enable-debug=LEVEL     set the debug level [$debuglevel]
248   --disable-optimizations  disable compiler optimizations
249   --enable-extra-warnings  enable more compiler warnings
250   --disable-stripping      disable stripping of executables and shared libraries
251   --samples=PATH           location of test samples for FATE, if not set use
252                            \$FATE_SAMPLES at make invocation time.
253
254 NOTE: Object files are built at the place where configure is launched.
255 EOF
256   exit 0
257 }
258
259 quotes='""'
260
261 log(){
262     echo "$@" >> $logfile
263 }
264
265 log_file(){
266     log BEGIN $1
267     pr -n -t $1 >> $logfile
268     log END $1
269 }
270
271 echolog(){
272     log "$@"
273     echo "$@"
274 }
275
276 warn(){
277     log "WARNING: $*"
278     WARNINGS="${WARNINGS}WARNING: $*\n"
279 }
280
281 die(){
282     echolog "$@"
283     cat <<EOF
284
285 If you think configure made a mistake, make sure you are using the latest
286 version from Git.  If the latest version fails, report the problem to the
287 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
288 EOF
289     if disabled logging; then
290         cat <<EOF
291 Rerun configure with logging enabled (do not use --disable-logging), and
292 include the log this produces with your report.
293 EOF
294     else
295 cat <<EOF
296 Include the log file "$logfile" produced by configure as this will help
297 solving the problem.
298 EOF
299     fi
300     exit 1
301 }
302
303 # Avoid locale weirdness, besides we really just want to translate ASCII.
304 toupper(){
305     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
306 }
307
308 tolower(){
309     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
310 }
311
312 c_escape(){
313     echo "$*" | sed 's/["\\]/\\\0/g'
314 }
315
316 sh_quote(){
317     v=$(echo "$1" | sed "s/'/'\\\\''/g")
318     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
319     echo "$v"
320 }
321
322 cleanws(){
323     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
324 }
325
326 filter(){
327     pat=$1
328     shift
329     for v; do
330         eval "case $v in $pat) echo $v ;; esac"
331     done
332 }
333
334 filter_out(){
335     pat=$1
336     shift
337     for v; do
338         eval "case $v in $pat) ;; *) echo $v ;; esac"
339     done
340 }
341
342 map(){
343     m=$1
344     shift
345     for v; do eval $m; done
346 }
347
348 set_all(){
349     value=$1
350     shift
351     for var in $*; do
352         eval $var=$value
353     done
354 }
355
356 set_weak(){
357     value=$1
358     shift
359     for var; do
360         eval : \${$var:=$value}
361     done
362 }
363
364 set_safe(){
365     var=$1
366     shift
367     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
368 }
369
370 get_safe(){
371     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
372 }
373
374 pushvar(){
375     for var in $*; do
376         eval level=\${${var}_level:=0}
377         eval ${var}_${level}="\$$var"
378         eval ${var}_level=$(($level+1))
379     done
380 }
381
382 popvar(){
383     for var in $*; do
384         eval level=\${${var}_level:-0}
385         test $level = 0 && continue
386         eval level=$(($level-1))
387         eval $var="\${${var}_${level}}"
388         eval ${var}_level=$level
389         eval unset ${var}_${level}
390     done
391 }
392
393 enable(){
394     set_all yes $*
395 }
396
397 disable(){
398     set_all no $*
399 }
400
401 enable_weak(){
402     set_weak yes $*
403 }
404
405 disable_weak(){
406     set_weak no $*
407 }
408
409 enable_safe(){
410     for var; do
411         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
412     done
413 }
414
415 disable_safe(){
416     for var; do
417         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
418     done
419 }
420
421 do_enable_deep(){
422     for var; do
423         enabled $var && continue
424         eval sel="\$${var}_select"
425         eval sgs="\$${var}_suggest"
426         pushvar var sgs
427         enable_deep $sel
428         popvar sgs
429         enable_deep_weak $sgs
430         popvar var
431     done
432 }
433
434 enable_deep(){
435     do_enable_deep $*
436     enable $*
437 }
438
439 enable_deep_weak(){
440     do_enable_deep $*
441     enable_weak $*
442 }
443
444 enabled(){
445     test "${1#!}" = "$1" && op== || op=!=
446     eval test "x\$${1#!}" $op "xyes"
447 }
448
449 disabled(){
450     test "${1#!}" = "$1" && op== || op=!=
451     eval test "x\$${1#!}" $op "xno"
452 }
453
454 enabled_all(){
455     for opt; do
456         enabled $opt || return 1
457     done
458 }
459
460 disabled_all(){
461     for opt; do
462         disabled $opt || return 1
463     done
464 }
465
466 enabled_any(){
467     for opt; do
468         enabled $opt && return 0
469     done
470 }
471
472 disabled_any(){
473     for opt; do
474         disabled $opt && return 0
475     done
476     return 1
477 }
478
479 set_default(){
480     for opt; do
481         eval : \${$opt:=\$${opt}_default}
482     done
483 }
484
485 is_in(){
486     value=$1
487     shift
488     for var in $*; do
489         [ $var = $value ] && return 0
490     done
491     return 1
492 }
493
494 check_deps(){
495     for cfg; do
496         cfg="${cfg#!}"
497         enabled ${cfg}_checking && die "Circular dependency for $cfg."
498         disabled ${cfg}_checking && continue
499         enable ${cfg}_checking
500
501         eval dep_all="\$${cfg}_deps"
502         eval dep_any="\$${cfg}_deps_any"
503         eval dep_sel="\$${cfg}_select"
504         eval dep_sgs="\$${cfg}_suggest"
505         eval dep_ifa="\$${cfg}_if"
506         eval dep_ifn="\$${cfg}_if_any"
507
508         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
509         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
510         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
511
512         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
513         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
514         enabled_all  $dep_all || disable $cfg
515         enabled_any  $dep_any || disable $cfg
516         disabled_any $dep_sel && disable $cfg
517
518         if enabled $cfg; then
519             eval dep_extralibs="\$${cfg}_extralibs"
520             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
521             enable_deep $dep_sel
522             enable_deep_weak $dep_sgs
523         fi
524
525         disable ${cfg}_checking
526     done
527 }
528
529 print_config_h(){
530     enabled $1 && v=1 || v=0
531     echo "#define $2 $v"
532 }
533
534 print_config_mak(){
535     enabled $1 && v= || v=!
536     echo "$v$2=yes"
537 }
538
539 print_config_asm(){
540     enabled $1 && echo "%define $2"
541 }
542
543 print_config(){
544     pfx=$1
545     files=$2
546     shift 2
547     for cfg; do
548         ucname="$(toupper $cfg)"
549         for f in $files; do
550             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
551         done
552     done
553 }
554
555 print_enabled(){
556     test "$1" = -n && end=" " && shift || end="\n"
557     suf=$1
558     shift
559     for v; do
560         enabled $v && printf "%s$end" ${v%$suf};
561     done
562 }
563
564 append(){
565     var=$1
566     shift
567     eval "$var=\"\$$var $*\""
568 }
569
570 prepend(){
571     var=$1
572     shift
573     eval "$var=\"$* \$$var\""
574 }
575
576 add_cppflags(){
577     append CPPFLAGS $($filter_cppflags "$@")
578 }
579
580 add_cflags(){
581     append CFLAGS $($filter_cflags "$@")
582 }
583
584 add_asflags(){
585     append ASFLAGS $($filter_asflags "$@")
586 }
587
588 add_ldflags(){
589     append LDFLAGS "$@"
590 }
591
592 add_extralibs(){
593     prepend extralibs "$@"
594 }
595
596 check_cmd(){
597     log "$@"
598     "$@" >> $logfile 2>&1
599 }
600
601 check_cc(){
602     log check_cc "$@"
603     cat > $TMPC
604     log_file $TMPC
605     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
606 }
607
608 check_cpp(){
609     log check_cpp "$@"
610     cat > $TMPC
611     log_file $TMPC
612     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
613 }
614
615 check_as(){
616     log check_as "$@"
617     cat > $TMPC
618     log_file $TMPC
619     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
620 }
621
622 check_asm(){
623     log check_asm "$@"
624     name="$1"
625     code="$2"
626     shift 2
627     disable $name
628     check_as "$@" <<EOF && enable $name
629 void foo(void){ __asm__ volatile($code); }
630 EOF
631 }
632
633 check_yasm(){
634     log check_yasm "$@"
635     echo "$1" > $TMPS
636     log_file $TMPS
637     shift 1
638     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
639 }
640
641 check_ld(){
642     log check_ld "$@"
643     flags=''
644     libs=''
645     for f; do
646         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
647     done
648     check_cc $($filter_cflags $flags) || return
649     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
650 }
651
652 check_cppflags(){
653     log check_cppflags "$@"
654     set -- $($filter_cppflags "$@")
655     check_cc "$@" <<EOF && append CPPFLAGS "$@"
656 int x;
657 EOF
658 }
659
660 check_cflags(){
661     log check_cflags "$@"
662     set -- $($filter_cflags "$@")
663     check_cc "$@" <<EOF && append CFLAGS "$@"
664 int x;
665 EOF
666 }
667
668 test_ldflags(){
669     log test_ldflags "$@"
670     check_ld "$@" <<EOF
671 int main(void){ return 0; }
672 EOF
673 }
674
675 check_ldflags(){
676     log check_ldflags "$@"
677     test_ldflags "$@" && add_ldflags "$@"
678 }
679
680 check_header(){
681     log check_header "$@"
682     header=$1
683     shift
684     disable_safe $header
685     check_cpp "$@" <<EOF && enable_safe $header
686 #include <$header>
687 int x;
688 EOF
689 }
690
691 check_func(){
692     log check_func "$@"
693     func=$1
694     shift
695     disable $func
696     check_ld "$@" <<EOF && enable $func
697 extern int $func();
698 int main(void){ $func(); }
699 EOF
700 }
701
702 check_mathfunc(){
703     log check_mathfunc "$@"
704     func=$1
705     shift
706     disable $func
707     check_ld "$@" <<EOF && enable $func
708 #include <math.h>
709 float foo(float f) { return $func(f); }
710 int main(void){ return 0; }
711 EOF
712 }
713
714 check_func_headers(){
715     log check_func_headers "$@"
716     headers=$1
717     funcs=$2
718     shift 2
719     {
720         for hdr in $headers; do
721             echo "#include <$hdr>"
722         done
723         for func in $funcs; do
724             echo "long check_$func(void) { return (long) $func; }"
725         done
726         echo "int main(void) { return 0; }"
727     } | check_ld "$@" && enable $funcs && enable_safe $headers
728 }
729
730 check_cpp_condition(){
731     log check_cpp_condition "$@"
732     header=$1
733     condition=$2
734     shift 2
735     check_cpp $($filter_cppflags "$@") <<EOF
736 #include <$header>
737 #if !($condition)
738 #error "unsatisfied condition: $condition"
739 #endif
740 EOF
741 }
742
743 check_lib(){
744     log check_lib "$@"
745     header="$1"
746     func="$2"
747     shift 2
748     check_header $header && check_func $func "$@" && add_extralibs "$@"
749 }
750
751 check_lib2(){
752     log check_lib2 "$@"
753     headers="$1"
754     funcs="$2"
755     shift 2
756     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
757 }
758
759 check_pkg_config(){
760     log check_pkg_config "$@"
761     pkg="$1"
762     headers="$2"
763     funcs="$3"
764     shift 3
765     $pkg_config --exists $pkg 2>/dev/null || return
766     pkg_cflags=$($pkg_config --cflags $pkg)
767     pkg_libs=$($pkg_config --libs $pkg)
768     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
769         set_safe ${pkg}_cflags $pkg_cflags   &&
770         set_safe ${pkg}_libs   $pkg_libs
771 }
772
773 check_exec(){
774     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
775 }
776
777 check_exec_crash(){
778     code=$(cat)
779
780     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
781     # are safe but may not be available everywhere.  Thus we use
782     # raise(SIGTERM) instead.  The check is run in a subshell so we
783     # can redirect the "Terminated" message from the shell.  SIGBUS
784     # is not defined by standard C so it is used conditionally.
785
786     (check_exec "$@") >> $logfile 2>&1 <<EOF
787 #include <signal.h>
788 static void sighandler(int sig){
789     raise(SIGTERM);
790 }
791 int main(void){
792     signal(SIGILL, sighandler);
793     signal(SIGFPE, sighandler);
794     signal(SIGSEGV, sighandler);
795 #ifdef SIGBUS
796     signal(SIGBUS, sighandler);
797 #endif
798     { $code }
799 }
800 EOF
801 }
802
803 check_type(){
804     log check_type "$@"
805     headers=$1
806     type=$2
807     shift 2
808     disable_safe "$type"
809     incs=""
810     for hdr in $headers; do
811         incs="$incs
812 #include <$hdr>"
813     done
814     check_cc "$@" <<EOF && enable_safe "$type"
815 $incs
816 $type v;
817 EOF
818 }
819
820 check_struct(){
821     log check_type "$@"
822     headers=$1
823     struct=$2
824     member=$3
825     shift 3
826     disable_safe "${struct}_${member}"
827     incs=""
828     for hdr in $headers; do
829         incs="$incs
830 #include <$hdr>"
831     done
832     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
833 $incs
834 const void *p = &(($struct *)0)->$member;
835 EOF
836 }
837
838 require(){
839     name="$1"
840     header="$2"
841     func="$3"
842     shift 3
843     check_lib $header $func "$@" || die "ERROR: $name not found"
844 }
845
846 require2(){
847     name="$1"
848     headers="$2"
849     func="$3"
850     shift 3
851     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
852 }
853
854 require_pkg_config(){
855     pkg="$1"
856     check_pkg_config "$@" || die "ERROR: $pkg not found"
857     add_cflags    $(get_safe ${pkg}_cflags)
858     add_extralibs $(get_safe ${pkg}_libs)
859 }
860
861 check_host_cc(){
862     log check_host_cc "$@"
863     cat > $TMPC
864     log_file $TMPC
865     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
866 }
867
868 check_host_cflags(){
869     log check_host_cflags "$@"
870     check_host_cc "$@" <<EOF && append host_cflags "$@"
871 int x;
872 EOF
873 }
874
875 apply(){
876     file=$1
877     shift
878     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
879 }
880
881 cp_if_changed(){
882     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
883     mkdir -p "$(dirname $2)"
884     cp -f "$1" "$2"
885 }
886
887 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
888 # system-dependent things.
889
890 COMPONENT_LIST="
891     bsfs
892     decoders
893     demuxers
894     encoders
895     filters
896     hwaccels
897     indevs
898     muxers
899     outdevs
900     parsers
901     protocols
902 "
903
904 CONFIG_LIST="
905     $COMPONENT_LIST
906     aandct
907     ac3dsp
908     avcodec
909     avdevice
910     avfilter
911     avformat
912     avisynth
913     bzlib
914     crystalhd
915     dct
916     doc
917     dwt
918     dxva2
919     fastdiv
920     ffmpeg
921     avconv
922     ffplay
923     ffprobe
924     ffserver
925     fft
926     frei0r
927     golomb
928     gpl
929     gray
930     h264dsp
931     h264pred
932     hardcoded_tables
933     huffman
934     libcelt
935     libdc1394
936     libdirac
937     libfaac
938     libfreetype
939     libgsm
940     libmp3lame
941     libnut
942     libopencore_amrnb
943     libopencore_amrwb
944     libopencv
945     libopenjpeg
946     librtmp
947     libschroedinger
948     libspeex
949     libtheora
950     libvo_aacenc
951     libvo_amrwbenc
952     libvorbis
953     libvpx
954     libx264
955     libxavs
956     libxvid
957     lpc
958     lsp
959     mdct
960     memalign_hack
961     mlib
962     mpegaudiodsp
963     network
964     nonfree
965     openal
966     pic
967     postproc
968     rdft
969     rtpdec
970     runtime_cpudetect
971     shared
972     sinewin
973     small
974     sram
975     static
976     swscale
977     swscale_alpha
978     thumb
979     vaapi
980     vdpau
981     version3
982     x11grab
983     zlib
984 "
985
986 THREADS_LIST='
987     pthreads
988     w32threads
989 '
990
991 ARCH_LIST='
992     alpha
993     arm
994     avr32
995     avr32_ap
996     avr32_uc
997     bfin
998     ia64
999     m68k
1000     mips
1001     mips64
1002     parisc
1003     ppc
1004     ppc64
1005     s390
1006     sh4
1007     sparc
1008     sparc64
1009     tomi
1010     x86
1011     x86_32
1012     x86_64
1013 '
1014
1015 ARCH_EXT_LIST='
1016     altivec
1017     amd3dnow
1018     amd3dnowext
1019     armv5te
1020     armv6
1021     armv6t2
1022     armvfp
1023     avx
1024     iwmmxt
1025     mmi
1026     mmx
1027     mmx2
1028     neon
1029     ppc4xx
1030     sse
1031     ssse3
1032     vfpv3
1033     vis
1034 '
1035
1036 HAVE_LIST_PUB='
1037     bigendian
1038     fast_unaligned
1039 '
1040
1041 HAVE_LIST="
1042     $ARCH_EXT_LIST
1043     $HAVE_LIST_PUB
1044     $THREADS_LIST
1045     aligned_stack
1046     alsa_asoundlib_h
1047     altivec_h
1048     arpa_inet_h
1049     attribute_may_alias
1050     attribute_packed
1051     bswap
1052     closesocket
1053     cmov
1054     dcbzl
1055     dev_bktr_ioctl_bt848_h
1056     dev_bktr_ioctl_meteor_h
1057     dev_ic_bt8xx_h
1058     dev_video_meteor_ioctl_meteor_h
1059     dev_video_bktr_ioctl_bt848_h
1060     dlfcn_h
1061     dlopen
1062     dos_paths
1063     ebp_available
1064     ebx_available
1065     exp2
1066     exp2f
1067     fast_64bit
1068     fast_clz
1069     fast_cmov
1070     fcntl
1071     fork
1072     getaddrinfo
1073     gethrtime
1074     GetProcessMemoryInfo
1075     GetProcessTimes
1076     getrusage
1077     gnu_as
1078     struct_rusage_ru_maxrss
1079     ibm_asm
1080     inet_aton
1081     inline_asm
1082     isatty
1083     kbhit
1084     ldbrx
1085     llrint
1086     llrintf
1087     local_aligned_16
1088     local_aligned_8
1089     localtime_r
1090     log2
1091     log2f
1092     loongson
1093     lrint
1094     lrintf
1095     lzo1x_999_compress
1096     machine_ioctl_bt848_h
1097     machine_ioctl_meteor_h
1098     malloc_h
1099     MapViewOfFile
1100     memalign
1101     mkstemp
1102     mmap
1103     posix_memalign
1104     round
1105     roundf
1106     sdl
1107     sdl_video_size
1108     setmode
1109     sndio_h
1110     socklen_t
1111     soundcard_h
1112     poll_h
1113     setrlimit
1114     strerror_r
1115     strptime
1116     strtok_r
1117     struct_addrinfo
1118     struct_ipv6_mreq
1119     struct_sockaddr_in6
1120     struct_sockaddr_sa_len
1121     struct_sockaddr_storage
1122     symver
1123     symver_gnu_asm
1124     symver_asm_label
1125     sys_mman_h
1126     sys_resource_h
1127     sys_select_h
1128     sys_soundcard_h
1129     sys_videoio_h
1130     termios_h
1131     threads
1132     trunc
1133     truncf
1134     vfp_args
1135     VirtualAlloc
1136     winsock2_h
1137     xform_asm
1138     xmm_clobbers
1139     yasm
1140 "
1141
1142 # options emitted with CONFIG_ prefix but not available on command line
1143 CONFIG_EXTRA="
1144     avutil
1145     gplv3
1146     lgplv3
1147 "
1148
1149 CMDLINE_SELECT="
1150     $ARCH_EXT_LIST
1151     $CONFIG_LIST
1152     $THREADS_LIST
1153     asm
1154     cross_compile
1155     debug
1156     extra_warnings
1157     logging
1158     optimizations
1159     stripping
1160     symver
1161     yasm
1162 "
1163
1164 PATHS_LIST='
1165     bindir
1166     datadir
1167     incdir
1168     libdir
1169     mandir
1170     prefix
1171     shlibdir
1172 '
1173
1174 CMDLINE_SET="
1175     $PATHS_LIST
1176     ar
1177     arch
1178     as
1179     build_suffix
1180     cc
1181     cpu
1182     cross_prefix
1183     dep_cc
1184     extra_version
1185     host_cc
1186     host_cflags
1187     host_ldflags
1188     host_libs
1189     host_os
1190     install
1191     ld
1192     logfile
1193     malloc_prefix
1194     nm
1195     optflags
1196     pkg_config
1197     samples
1198     strip
1199     sysinclude
1200     sysroot
1201     target_exec
1202     target_os
1203     target_path
1204 "
1205
1206 CMDLINE_APPEND="
1207     extra_cflags
1208 "
1209
1210 # code dependency declarations
1211
1212 # architecture extensions
1213
1214 armv5te_deps="arm"
1215 armv6_deps="arm"
1216 armv6t2_deps="arm"
1217 armvfp_deps="arm"
1218 iwmmxt_deps="arm"
1219 neon_deps="arm"
1220 vfpv3_deps="armvfp"
1221
1222 mmi_deps="mips"
1223
1224 altivec_deps="ppc"
1225 ppc4xx_deps="ppc"
1226
1227 vis_deps="sparc"
1228
1229 x86_64_suggest="cmov fast_cmov"
1230 amd3dnow_deps="mmx"
1231 amd3dnowext_deps="amd3dnow"
1232 mmx_deps="x86"
1233 mmx2_deps="mmx"
1234 sse_deps="mmx"
1235 ssse3_deps="sse"
1236 avx_deps="ssse3"
1237
1238 aligned_stack_if_any="ppc x86"
1239 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1240 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1241 fast_unaligned_if_any="armv6 ppc x86"
1242
1243 need_memalign="altivec neon sse"
1244 inline_asm_deps="!tms470"
1245
1246 symver_if_any="symver_asm_label symver_gnu_asm"
1247
1248 # subsystems
1249 dct_select="rdft"
1250 mdct_select="fft"
1251 rdft_select="fft"
1252 mpegaudiodsp_select="dct"
1253
1254 # decoders / encoders / hardware accelerators
1255 aac_decoder_select="mdct sinewin"
1256 aac_encoder_select="mdct sinewin"
1257 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1258 ac3_decoder_select="mdct ac3dsp ac3_parser"
1259 ac3_encoder_select="mdct ac3dsp"
1260 ac3_fixed_encoder_select="mdct ac3dsp"
1261 alac_encoder_select="lpc"
1262 amrnb_decoder_select="lsp"
1263 amrwb_decoder_select="lsp"
1264 atrac1_decoder_select="mdct sinewin"
1265 atrac3_decoder_select="mdct"
1266 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1267 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1268 cavs_decoder_select="golomb"
1269 cook_decoder_select="mdct sinewin"
1270 cscd_decoder_suggest="zlib"
1271 dca_decoder_select="mdct"
1272 dnxhd_encoder_select="aandct"
1273 dxa_decoder_select="zlib"
1274 eac3_decoder_select="ac3_decoder"
1275 eac3_encoder_select="mdct ac3dsp"
1276 eamad_decoder_select="aandct"
1277 eatgq_decoder_select="aandct"
1278 eatqi_decoder_select="aandct"
1279 ffv1_decoder_select="golomb"
1280 flac_decoder_select="golomb"
1281 flac_encoder_select="golomb lpc"
1282 flashsv_decoder_select="zlib"
1283 flashsv_encoder_select="zlib"
1284 flashsv2_encoder_select="zlib"
1285 flashsv2_decoder_select="zlib"
1286 flv_decoder_select="h263_decoder"
1287 flv_encoder_select="h263_encoder"
1288 fraps_decoder_select="huffman"
1289 h261_encoder_select="aandct"
1290 h263_decoder_select="h263_parser"
1291 h263_encoder_select="aandct"
1292 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1293 h263i_decoder_select="h263_decoder"
1294 h263p_encoder_select="h263_encoder"
1295 h264_decoder_select="golomb h264dsp h264pred"
1296 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1297 h264_dxva2_hwaccel_deps="dxva2api_h"
1298 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1299 h264_vaapi_hwaccel_select="vaapi"
1300 h264_vdpau_decoder_select="vdpau h264_decoder"
1301 imc_decoder_select="fft mdct sinewin"
1302 jpegls_decoder_select="golomb"
1303 jpegls_encoder_select="golomb"
1304 ljpeg_encoder_select="aandct"
1305 loco_decoder_select="golomb"
1306 mjpeg_encoder_select="aandct"
1307 mlp_decoder_select="mlp_parser"
1308 mp1_decoder_select="mpegaudiodsp"
1309 mp2_decoder_select="mpegaudiodsp"
1310 mp3adu_decoder_select="mpegaudiodsp"
1311 mp3_decoder_select="mpegaudiodsp"
1312 mp3on4_decoder_select="mpegaudiodsp"
1313 mp1float_decoder_select="mpegaudiodsp"
1314 mp2float_decoder_select="mpegaudiodsp"
1315 mp3adufloat_decoder_select="mpegaudiodsp"
1316 mp3float_decoder_select="mpegaudiodsp"
1317 mp3on4float_decoder_select="mpegaudiodsp"
1318 mpeg1video_encoder_select="aandct"
1319 mpeg2video_encoder_select="aandct"
1320 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1321 mpeg4_encoder_select="h263_encoder"
1322 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1323 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1324 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1325 mpeg2_crystalhd_decoder_select="crystalhd"
1326 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1327 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1328 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1329 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1330 mpeg4_crystalhd_decoder_select="crystalhd"
1331 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1332 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1333 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1334 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1335 msmpeg4_crystalhd_decoder_select="crystalhd"
1336 msmpeg4v1_decoder_select="h263_decoder"
1337 msmpeg4v1_encoder_select="h263_encoder"
1338 msmpeg4v2_decoder_select="h263_decoder"
1339 msmpeg4v2_encoder_select="h263_encoder"
1340 msmpeg4v3_decoder_select="h263_decoder"
1341 msmpeg4v3_encoder_select="h263_encoder"
1342 nellymoser_decoder_select="mdct sinewin"
1343 nellymoser_encoder_select="mdct sinewin"
1344 png_decoder_select="zlib"
1345 png_encoder_select="zlib"
1346 qcelp_decoder_select="lsp"
1347 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1348 ra_144_encoder_select="lpc"
1349 rv10_decoder_select="h263_decoder"
1350 rv10_encoder_select="h263_encoder"
1351 rv20_decoder_select="h263_decoder"
1352 rv20_encoder_select="h263_encoder"
1353 rv30_decoder_select="golomb h264pred"
1354 rv40_decoder_select="golomb h264pred"
1355 shorten_decoder_select="golomb"
1356 sipr_decoder_select="lsp"
1357 snow_decoder_select="dwt"
1358 snow_encoder_select="aandct dwt"
1359 sonic_decoder_select="golomb"
1360 sonic_encoder_select="golomb"
1361 sonic_ls_encoder_select="golomb"
1362 svq1_encoder_select="aandct"
1363 svq3_decoder_select="golomb h264dsp h264pred"
1364 svq3_decoder_suggest="zlib"
1365 theora_decoder_select="vp3_decoder"
1366 tiff_decoder_suggest="zlib"
1367 tiff_encoder_suggest="zlib"
1368 truehd_decoder_select="mlp_decoder"
1369 tscc_decoder_select="zlib"
1370 twinvq_decoder_select="mdct lsp sinewin"
1371 vc1_decoder_select="h263_decoder"
1372 vc1_crystalhd_decoder_select="crystalhd"
1373 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1374 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1375 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1376 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1377 vorbis_decoder_select="mdct"
1378 vorbis_encoder_select="mdct"
1379 vp6_decoder_select="huffman"
1380 vp6a_decoder_select="vp6_decoder"
1381 vp6f_decoder_select="vp6_decoder"
1382 vp8_decoder_select="h264pred"
1383 wmapro_decoder_select="mdct sinewin"
1384 wmav1_decoder_select="mdct sinewin"
1385 wmav1_encoder_select="mdct sinewin"
1386 wmav2_decoder_select="mdct sinewin"
1387 wmav2_encoder_select="mdct sinewin"
1388 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1389 wmv1_decoder_select="h263_decoder"
1390 wmv1_encoder_select="h263_encoder"
1391 wmv2_decoder_select="h263_decoder"
1392 wmv2_encoder_select="h263_encoder"
1393 wmv3_decoder_select="vc1_decoder"
1394 wmv3_crystalhd_decoder_select="crystalhd"
1395 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1396 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1397 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1398 zlib_decoder_select="zlib"
1399 zlib_encoder_select="zlib"
1400 zmbv_decoder_select="zlib"
1401 zmbv_encoder_select="zlib"
1402
1403 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1404 vaapi_deps="va_va_h"
1405 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1406
1407 # parsers
1408 h264_parser_select="golomb h264dsp h264pred"
1409
1410 # external libraries
1411 libcelt_decoder_deps="libcelt"
1412 libdirac_decoder_deps="libdirac !libschroedinger"
1413 libdirac_encoder_deps="libdirac"
1414 libfaac_encoder_deps="libfaac"
1415 libgsm_decoder_deps="libgsm"
1416 libgsm_encoder_deps="libgsm"
1417 libgsm_ms_decoder_deps="libgsm"
1418 libgsm_ms_encoder_deps="libgsm"
1419 libmp3lame_encoder_deps="libmp3lame"
1420 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1421 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1422 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1423 libopenjpeg_decoder_deps="libopenjpeg"
1424 libschroedinger_decoder_deps="libschroedinger"
1425 libschroedinger_encoder_deps="libschroedinger"
1426 libspeex_decoder_deps="libspeex"
1427 libtheora_encoder_deps="libtheora"
1428 libvo_aacenc_encoder_deps="libvo_aacenc"
1429 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1430 libvorbis_encoder_deps="libvorbis"
1431 libvpx_decoder_deps="libvpx"
1432 libvpx_encoder_deps="libvpx"
1433 libx264_encoder_deps="libx264"
1434 libxavs_encoder_deps="libxavs"
1435 libxvid_encoder_deps="libxvid"
1436
1437 # demuxers / muxers
1438 ac3_demuxer_select="ac3_parser"
1439 asf_stream_muxer_select="asf_muxer"
1440 avisynth_demuxer_deps="avisynth"
1441 dirac_demuxer_select="dirac_parser"
1442 eac3_demuxer_select="ac3_parser"
1443 flac_demuxer_select="flac_parser"
1444 ipod_muxer_select="mov_muxer"
1445 libnut_demuxer_deps="libnut"
1446 libnut_muxer_deps="libnut"
1447 matroska_audio_muxer_select="matroska_muxer"
1448 matroska_demuxer_suggest="zlib bzlib"
1449 mov_demuxer_suggest="zlib"
1450 mp3_demuxer_select="mpegaudio_parser"
1451 mp4_muxer_select="mov_muxer"
1452 mpegtsraw_demuxer_select="mpegts_demuxer"
1453 mxf_d10_muxer_select="mxf_muxer"
1454 ogg_demuxer_select="golomb"
1455 psp_muxer_select="mov_muxer"
1456 rtp_demuxer_select="sdp_demuxer"
1457 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1458 rtsp_demuxer_select="http_protocol rtpdec"
1459 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1460 sap_demuxer_select="sdp_demuxer"
1461 sap_muxer_select="rtp_muxer rtp_protocol"
1462 sdp_demuxer_select="rtpdec"
1463 spdif_muxer_select="aac_parser"
1464 tg2_muxer_select="mov_muxer"
1465 tgp_muxer_select="mov_muxer"
1466 w64_demuxer_deps="wav_demuxer"
1467
1468 # indevs / outdevs
1469 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1470 alsa_outdev_deps="alsa_asoundlib_h"
1471 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1472 dshow_indev_deps="IBaseFilter"
1473 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1474 dv1394_indev_deps="dv1394 dv_demuxer"
1475 fbdev_indev_deps="linux_fb_h"
1476 jack_indev_deps="jack_jack_h sem_timedwait"
1477 lavfi_indev_deps="avfilter"
1478 libdc1394_indev_deps="libdc1394"
1479 openal_indev_deps="openal"
1480 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1481 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1482 sdl_outdev_deps="sdl"
1483 sndio_indev_deps="sndio_h"
1484 sndio_outdev_deps="sndio_h"
1485 v4l_indev_deps="linux_videodev_h"
1486 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1487 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1488 vfwcap_indev_extralibs="-lavicap32"
1489 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1490 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1491
1492 # protocols
1493 gopher_protocol_deps="network"
1494 http_protocol_deps="network"
1495 http_protocol_select="tcp_protocol"
1496 mmsh_protocol_select="http_protocol"
1497 mmst_protocol_deps="network"
1498 rtmp_protocol_select="tcp_protocol"
1499 rtp_protocol_select="udp_protocol"
1500 tcp_protocol_deps="network"
1501 udp_protocol_deps="network"
1502
1503 # filters
1504 blackframe_filter_deps="gpl"
1505 boxblur_filter_deps="gpl"
1506 cropdetect_filter_deps="gpl"
1507 drawtext_filter_deps="libfreetype"
1508 frei0r_filter_deps="frei0r dlopen strtok_r"
1509 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1510 hqdn3d_filter_deps="gpl"
1511 movie_filter_deps="avcodec avformat"
1512 mp_filter_deps="gpl avcodec"
1513 mptestsrc_filter_deps="gpl"
1514 negate_filter_deps="lut_filter"
1515 ocv_filter_deps="libopencv"
1516 scale_filter_deps="swscale"
1517 yadif_filter_deps="gpl"
1518
1519 # libraries
1520 avdevice_deps="avcodec avformat"
1521 avformat_deps="avcodec"
1522 postproc_deps="gpl"
1523
1524 # programs
1525 ffmpeg_deps="avcodec avformat swscale"
1526 ffmpeg_select="buffer_filter buffersink_filter"
1527 av_deps="avcodec avformat swscale"
1528 av_select="buffer_filter"
1529 ffplay_deps="avcodec avformat swscale sdl"
1530 ffplay_select="buffersink_filter rdft"
1531 ffprobe_deps="avcodec avformat"
1532 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1533 ffserver_extralibs='$ldl'
1534
1535 doc_deps="texi2html"
1536
1537 # tests
1538
1539 test_deps(){
1540     suf1=$1
1541     suf2=$2
1542     shift 2
1543     for v; do
1544         dep=${v%=*}
1545         tests=${v#*=}
1546         for name in ${tests}; do
1547             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1548         done
1549     done
1550 }
1551
1552 test_deps _encoder _decoder                                             \
1553     adpcm_g726=g726                                                     \
1554     adpcm_ima_qt                                                        \
1555     adpcm_ima_wav                                                       \
1556     adpcm_ms                                                            \
1557     adpcm_swf                                                           \
1558     adpcm_yamaha=adpcm_yam                                              \
1559     alac                                                                \
1560     asv1                                                                \
1561     asv2                                                                \
1562     bmp                                                                 \
1563     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1564     dvvideo="dv dv50"                                                   \
1565     ffv1                                                                \
1566     flac                                                                \
1567     flashsv                                                             \
1568     flv                                                                 \
1569     gif                                                                 \
1570     h261                                                                \
1571     h263="h263 h263p"                                                   \
1572     huffyuv                                                             \
1573     jpegls                                                              \
1574     mjpeg="jpg mjpeg ljpeg"                                             \
1575     mp2                                                                 \
1576     mpeg1video="mpeg mpeg1b"                                            \
1577     mpeg2video="mpeg2 mpeg2thread"                                      \
1578     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1579     msmpeg4v3=msmpeg4                                                   \
1580     msmpeg4v2                                                           \
1581     pbm=pbmpipe                                                         \
1582     pcx                                                                 \
1583     pgm="pgm pgmpipe"                                                   \
1584     png                                                                 \
1585     ppm="ppm ppmpipe"                                                   \
1586     rawvideo="rgb yuv"                                                  \
1587     roq                                                                 \
1588     rv10                                                                \
1589     rv20                                                                \
1590     sgi                                                                 \
1591     snow="snow snowll"                                                  \
1592     svq1                                                                \
1593     targa=tga                                                           \
1594     tiff                                                                \
1595     wmav1                                                               \
1596     wmav2                                                               \
1597     wmv1                                                                \
1598     wmv2                                                                \
1599
1600 test_deps _muxer _demuxer                                               \
1601     aiff                                                                \
1602     pcm_alaw=alaw                                                       \
1603     asf                                                                 \
1604     au                                                                  \
1605     avi                                                                 \
1606     dv=dv_fmt                                                           \
1607     ffm                                                                 \
1608     flv=flv_fmt                                                         \
1609     gxf                                                                 \
1610     matroska=mkv                                                        \
1611     mmf                                                                 \
1612     mov                                                                 \
1613     pcm_mulaw=mulaw                                                     \
1614     mxf="mxf mxf_d10"                                                   \
1615     nut                                                                 \
1616     ogg                                                                 \
1617     rawvideo=pixfmt                                                     \
1618     rm                                                                  \
1619     swf                                                                 \
1620     mpegts=ts                                                           \
1621     voc                                                                 \
1622     wav                                                                 \
1623     yuv4mpegpipe=yuv4mpeg                                               \
1624
1625 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1626 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1627
1628 # default parameters
1629
1630 logfile="config.log"
1631
1632 # installation paths
1633 prefix_default="/usr/local"
1634 bindir_default='${prefix}/bin'
1635 datadir_default='${prefix}/share/avconv'
1636 incdir_default='${prefix}/include'
1637 libdir_default='${prefix}/lib'
1638 mandir_default='${prefix}/share/man'
1639 shlibdir_default="$libdir_default"
1640
1641 # toolchain
1642 ar_default="ar"
1643 cc_default="gcc"
1644 cc_version=\"unknown\"
1645 host_cc_default="gcc"
1646 install="install"
1647 ln_s="ln -sf"
1648 nm_default="nm"
1649 objformat="elf"
1650 pkg_config_default=pkg-config
1651 ranlib="ranlib"
1652 strip_default="strip"
1653 yasmexe="yasm"
1654 nogas=":"
1655
1656 nm_opts='-g'
1657
1658 # machine
1659 arch_default=$(uname -m)
1660 cpu="generic"
1661
1662 # OS
1663 target_os_default=$(tolower $(uname -s))
1664 host_os=$target_os_default
1665
1666 # configurable options
1667 enable avcodec
1668 enable avdevice
1669 enable avfilter
1670 enable avformat
1671 enable avutil
1672 enable asm
1673 enable debug
1674 enable doc
1675 enable fastdiv
1676 enable ffmpeg
1677 enable avconv
1678 enable ffplay
1679 enable ffprobe
1680 enable ffserver
1681 enable network
1682 enable optimizations
1683 enable postproc
1684 enable protocols
1685 enable static
1686 enable stripping
1687 enable swscale
1688 enable swscale_alpha
1689
1690 # build settings
1691 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1692 FFSERVERLDFLAGS=-Wl,-E
1693 LIBPREF="lib"
1694 LIBSUF=".a"
1695 FULLNAME='$(NAME)$(BUILDSUF)'
1696 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1697 SLIBPREF="lib"
1698 SLIBSUF=".so"
1699 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1700 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1701 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1702 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1703 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1704 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1705
1706 AS_O='-o $@'
1707 CC_O='-o $@'
1708
1709 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1710 host_libs='-lm'
1711
1712 target_path='$(CURDIR)'
1713
1714 # since the object filename is not given with the -MM flag, the compiler
1715 # is only able to print the basename, and we must add the path ourselves
1716 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1717 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1718
1719 # find source path
1720 if test -f configure; then
1721     source_path=.
1722 else
1723     source_path=$(cd $(dirname "$0"); pwd)
1724     echo "$source_path" | grep -q '[[:blank:]]' &&
1725         die "Out of tree builds are impossible with whitespace in source path."
1726     test -e "$source_path/config.h" &&
1727         die "Out of tree builds are impossible with config.h in source dir."
1728 fi
1729
1730 for v in "$@"; do
1731     r=${v#*=}
1732     l=${v%"$r"}
1733     r=$(sh_quote "$r")
1734     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1735 done
1736
1737 find_things(){
1738     thing=$1
1739     pattern=$2
1740     file=$source_path/$3
1741     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1742 }
1743
1744 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1745 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1746 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1747 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1748 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1749 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1750 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1751 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1752 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1753 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1754 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1755
1756 find_tests(){
1757     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1758 }
1759
1760 ACODEC_TESTS=$(find_tests acodec)
1761 VCODEC_TESTS=$(find_tests vsynth1)
1762 LAVF_TESTS=$(find_tests lavf)
1763 LAVFI_TESTS=$(find_tests lavfi)
1764 SEEK_TESTS=$(find_tests seek seek_)
1765
1766 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1767
1768 for n in $COMPONENT_LIST; do
1769     v=$(toupper ${n%s})_LIST
1770     eval enable \$$v
1771     eval ${n}_if_any="\$$v"
1772 done
1773
1774 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1775
1776 die_unknown(){
1777     echo "Unknown option \"$1\"."
1778     echo "See $0 --help for available options."
1779     exit 1
1780 }
1781
1782 show_list() {
1783     suffix=_$1
1784     shift
1785     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1786     exit 0
1787 }
1788
1789 for opt do
1790     optval="${opt#*=}"
1791     case "$opt" in
1792     --extra-ldflags=*) add_ldflags $optval
1793     ;;
1794     --extra-libs=*) add_extralibs $optval
1795     ;;
1796     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1797     ;;
1798     --enable-debug=*) debuglevel="$optval"
1799     ;;
1800     --disable-everything)
1801     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1802     ;;
1803     --enable-*=*|--disable-*=*)
1804     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1805     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1806     eval list=\$$(toupper $thing)_LIST
1807     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1808     $action $(filter "$name" $list)
1809     ;;
1810     --enable-?*|--disable-?*)
1811     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1812     if is_in $option $COMPONENT_LIST; then
1813         test $action = disable && action=unset
1814         eval $action \$$(toupper ${option%s})_LIST
1815     elif is_in $option $CMDLINE_SELECT; then
1816         $action $option
1817     else
1818         die_unknown $opt
1819     fi
1820     ;;
1821     --list-*)
1822         NAME="${opt#--list-}"
1823         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1824         NAME=${NAME%s}
1825         eval show_list $NAME \$$(toupper $NAME)_LIST
1826     ;;
1827     --help|-h) show_help
1828     ;;
1829     *)
1830     optname="${opt%%=*}"
1831     optname="${optname#--}"
1832     optname=$(echo "$optname" | sed 's/-/_/g')
1833     if is_in $optname $CMDLINE_SET; then
1834         eval $optname='$optval'
1835     elif is_in $optname $CMDLINE_APPEND; then
1836         append $optname "$optval"
1837     else
1838          die_unknown $opt
1839     fi
1840     ;;
1841     esac
1842 done
1843
1844 disabled logging && logfile=/dev/null
1845
1846 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1847 set >> $logfile
1848
1849 test -n "$cross_prefix" && enable cross_compile
1850
1851 if enabled cross_compile; then
1852     test -n "$arch" && test -n "$target_os" ||
1853         die "Must specify target arch and OS when cross-compiling"
1854 fi
1855
1856 set_default arch target_os
1857
1858 ar_default="${cross_prefix}${ar_default}"
1859 cc_default="${cross_prefix}${cc_default}"
1860 nm_default="${cross_prefix}${nm_default}"
1861 pkg_config_default="${cross_prefix}${pkg_config_default}"
1862 ranlib="${cross_prefix}${ranlib}"
1863 strip_default="${cross_prefix}${strip_default}"
1864
1865 sysinclude_default="${sysroot}/usr/include"
1866
1867 set_default cc nm pkg_config strip sysinclude
1868 enabled cross_compile || host_cc_default=$cc
1869 set_default host_cc
1870
1871 if ! $pkg_config --version >/dev/null 2>&1; then
1872     warn "$pkg_config not found, library detection may fail."
1873     pkg_config=false
1874 fi
1875
1876 exesuf() {
1877     case $1 in
1878         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1879     esac
1880 }
1881
1882 EXESUF=$(exesuf $target_os)
1883 HOSTEXESUF=$(exesuf $host_os)
1884
1885 # set temporary file name
1886 : ${TMPDIR:=$TEMPDIR}
1887 : ${TMPDIR:=$TMP}
1888 : ${TMPDIR:=/tmp}
1889
1890 if ! check_cmd mktemp -u XXXXXX; then
1891     # simple replacement for missing mktemp
1892     # NOT SAFE FOR GENERAL USE
1893     mktemp(){
1894         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1895     }
1896 fi
1897
1898 tmpfile(){
1899     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1900         (set -C; exec > $tmp) 2>/dev/null ||
1901         die "Unable to create temporary file in $TMPDIR."
1902     append TMPFILES $tmp
1903     eval $1=$tmp
1904 }
1905
1906 trap 'rm -f -- $TMPFILES' EXIT
1907
1908 tmpfile TMPC  .c
1909 tmpfile TMPE  $EXESUF
1910 tmpfile TMPH  .h
1911 tmpfile TMPO  .o
1912 tmpfile TMPS  .S
1913 tmpfile TMPV  .ver
1914 tmpfile TMPSH .sh
1915 tmpfile TMPASM .asm
1916
1917 unset -f mktemp
1918
1919 chmod +x $TMPE
1920
1921 # make sure we can execute files in $TMPDIR
1922 cat > $TMPSH 2>> $logfile <<EOF
1923 #! /bin/sh
1924 EOF
1925 chmod +x $TMPSH >> $logfile 2>&1
1926 if ! $TMPSH >> $logfile 2>&1; then
1927     cat <<EOF
1928 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1929 variable to another directory and make sure that it is not mounted noexec.
1930 EOF
1931     die "Sanity test failed."
1932 fi
1933
1934 filter_cflags=echo
1935 filter_cppflags=echo
1936 filter_asflags=echo
1937
1938 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1939     cc_type=llvm_gcc
1940     cc_version=__VERSION__
1941     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1942     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1943     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1944     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1945     speed_cflags='-O3'
1946     size_cflags='-Os'
1947 elif $cc -v 2>&1 | grep -qi ^gcc; then
1948     cc_type=gcc
1949     cc_version=__VERSION__
1950     gcc_version=$($cc --version | head -n1)
1951     gcc_basever=$($cc -dumpversion)
1952     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1953     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1954     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1955     if ! $cc -dumpversion | grep -q '^2\.'; then
1956         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1957         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1958     fi
1959     speed_cflags='-O3'
1960     size_cflags='-Os'
1961 elif $cc --version 2>/dev/null | grep -q Intel; then
1962     cc_type=icc
1963     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1964     cc_ident=$($cc --version | head -n1)
1965     icc_version=$($cc -dumpversion)
1966     CC_DEPFLAGS='-MMD'
1967     AS_DEPFLAGS='-MMD'
1968     speed_cflags='-O3'
1969     size_cflags='-Os'
1970     noopt_cflags='-O1'
1971 elif $cc -v 2>&1 | grep -q xlc; then
1972     cc_type=xlc
1973     cc_version="AV_STRINGIFY(__IBMC__)"
1974     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1975     speed_cflags='-O5'
1976     size_cflags='-O5 -qcompact'
1977 elif $cc -V 2>/dev/null | grep -q Compaq; then
1978     cc_type=ccc
1979     cc_version="AV_STRINGIFY(__DECC_VER)"
1980     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1981     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1982     debuglevel=3
1983     add_ldflags -Wl,-z,now # calls to libots crash without this
1984     speed_cflags='-fast'
1985     size_cflags='-O1'
1986 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1987     test -d "$sysroot" || die "No valid sysroot specified."
1988     cc_type=armcc
1989     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1990     cc_ident=$($cc --vsn | head -n1)
1991     armcc_conf="$PWD/armcc.conf"
1992     $cc --arm_linux_configure                 \
1993         --arm_linux_config_file="$armcc_conf" \
1994         --configure_sysroot="$sysroot"        \
1995         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1996         die "Error creating armcc configuration file."
1997     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1998     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1999     as_default="${cross_prefix}gcc"
2000     CC_DEPFLAGS='-MMD'
2001     AS_DEPFLAGS='-MMD'
2002     speed_cflags='-O3'
2003     size_cflags='-Os'
2004     filter_asflags="filter_out -W${armcc_opt}*"
2005 elif $cc -version 2>/dev/null | grep -q TMS470; then
2006     cc_type=tms470
2007     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2008     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2009     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2010     CC_O='-fr=$(@D)'
2011     as_default="${cross_prefix}gcc"
2012     ld_default="${cross_prefix}gcc"
2013     TMPO=$(basename $TMPC .c).o
2014     append TMPFILES $TMPO
2015     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2016     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2017     AS_DEPFLAGS='-MMD'
2018     speed_cflags='-O3 -mf=5'
2019     size_cflags='-O3 -mf=2'
2020     filter_cflags=tms470_flags
2021     tms470_flags(){
2022         for flag; do
2023             case $flag in
2024                 -march=*|-mcpu=*)
2025                     case "${flag#*=}" in
2026                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2027                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2028                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2029                         armv6*|arm11*)          echo -mv=6   ;;
2030                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2031                                                 echo -mv=5e  ;;
2032                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2033                     esac
2034                     ;;
2035                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2036                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2037                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2038                 -msoft-float)   echo --float_support=vfplib       ;;
2039                 -O[0-3]|-mf=*)  echo $flag                        ;;
2040                 -g)             echo -g -mn                       ;;
2041                 -pds=*)         echo $flag                        ;;
2042             esac
2043         done
2044     }
2045 elif $cc -v 2>&1 | grep -q clang; then
2046     cc_type=clang
2047     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2048         cc_version=__clang_version__ || cc_version=__VERSION__
2049     cc_ident=$($cc --version | head -n1)
2050     CC_DEPFLAGS='-MMD'
2051     AS_DEPFLAGS='-MMD'
2052     speed_cflags='-O3'
2053     size_cflags='-Os'
2054 elif $cc -V 2>&1 | grep -q Sun; then
2055     cc_type=suncc
2056     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2057     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2058     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2059     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2060     add_ldflags -xc99
2061     speed_cflags='-O5'
2062     size_cflags='-O5 -xspace'
2063     filter_cflags=suncc_flags
2064     suncc_flags(){
2065         for flag; do
2066             case $flag in
2067                 -march=*|-mcpu=*)
2068                     case "${flag#*=}" in
2069                         native)                   echo -xtarget=native       ;;
2070                         v9|niagara)               echo -xarch=sparc          ;;
2071                         ultrasparc)               echo -xarch=sparcvis       ;;
2072                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2073                         i586|pentium)             echo -xchip=pentium        ;;
2074                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2075                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2076                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2077                         pentium4*)          echo -xtarget=pentium4           ;;
2078                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2079                         *-sse3)             echo -xarch=sse3                 ;;
2080                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2081                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2082                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2083                         k8|opteron|athlon64|athlon-fx)
2084                                                   echo -xarch=sse2a          ;;
2085                         athlon*)                  echo -xarch=pentium_proa   ;;
2086                     esac
2087                     ;;
2088                 -std=c99)             echo -xc99              ;;
2089                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2090                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2091                 -W*,*)                echo $flag              ;;
2092                 -f*-*|-W*)                                    ;;
2093                 *)                    echo $flag              ;;
2094             esac
2095         done
2096     }
2097 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2098     cc_type=pathscale
2099     cc_version=__PATHSCALE__
2100     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2101     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2102     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2103     speed_cflags='-O2'
2104     size_cflags='-Os'
2105     filter_cflags='filter_out -Wdisabled-optimization'
2106 elif $cc -v 2>&1 | grep -q Open64; then
2107     cc_type=open64
2108     cc_version=__OPEN64__
2109     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2110     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2111     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2112     speed_cflags='-O2'
2113     size_cflags='-Os'
2114     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2115 fi
2116
2117 test -n "$cc_type" && enable $cc_type ||
2118     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2119
2120 : ${as_default:=$cc}
2121 : ${dep_cc_default:=$cc}
2122 : ${ld_default:=$cc}
2123 set_default ar as dep_cc ld
2124
2125 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2126 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2127
2128 add_cflags $extra_cflags
2129 add_asflags $extra_cflags
2130
2131 if test -n "$sysroot"; then
2132     case "$cc_type" in
2133         gcc|llvm_gcc|clang)
2134             add_cppflags --sysroot="$sysroot"
2135             add_ldflags --sysroot="$sysroot"
2136         ;;
2137         tms470)
2138             add_cppflags -I"$sysinclude"
2139             add_ldflags  --sysroot="$sysroot"
2140         ;;
2141     esac
2142 fi
2143
2144 if test "$cpu" = host; then
2145     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2146
2147     case "$cc_type" in
2148         gcc|llvm_gcc)
2149             check_native(){
2150                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2151                 sed -n "/cc1.*$1=/{
2152                             s/.*$1=\\([^ ]*\\).*/\\1/
2153                             p
2154                             q
2155                         }" $TMPE
2156             }
2157             cpu=$(check_native -march || check_native -mcpu)
2158         ;;
2159     esac
2160
2161     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2162 fi
2163
2164 # Deal with common $arch aliases
2165 case "$arch" in
2166     arm*)
2167         arch="arm"
2168     ;;
2169     mips|mipsel|IP*)
2170         arch="mips"
2171     ;;
2172     mips64*)
2173         arch="mips"
2174         subarch="mips64"
2175     ;;
2176     parisc|hppa)
2177         arch="parisc"
2178     ;;
2179     parisc64|hppa64)
2180         arch="parisc"
2181         subarch="parisc64"
2182     ;;
2183     "Power Macintosh"|ppc|powerpc)
2184         arch="ppc"
2185     ;;
2186     ppc64|powerpc64)
2187         arch="ppc"
2188         subarch="ppc64"
2189     ;;
2190     s390|s390x)
2191         arch="s390"
2192     ;;
2193     sh4|sh)
2194         arch="sh4"
2195     ;;
2196     sun4u|sparc64)
2197         arch="sparc"
2198         subarch="sparc64"
2199     ;;
2200     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2201         arch="x86"
2202     ;;
2203 esac
2204
2205 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2206 enable $arch
2207
2208 # Add processor-specific flags
2209 if test "$cpu" = generic; then
2210     : do nothing
2211 elif enabled ppc; then
2212
2213     case $(tolower $cpu) in
2214         601|ppc601|powerpc601)
2215             cpuflags="-mcpu=601"
2216             disable altivec
2217         ;;
2218         603*|ppc603*|powerpc603*)
2219             cpuflags="-mcpu=603"
2220             disable altivec
2221         ;;
2222         604*|ppc604*|powerpc604*)
2223             cpuflags="-mcpu=604"
2224             disable altivec
2225         ;;
2226         g3|75*|ppc75*|powerpc75*)
2227             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2228             disable altivec
2229         ;;
2230         g4|745*|ppc745*|powerpc745*)
2231             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2232         ;;
2233         74*|ppc74*|powerpc74*)
2234             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2235         ;;
2236         g5|970|ppc970|powerpc970|power4*)
2237             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2238         ;;
2239         cell)
2240             cpuflags="-mcpu=cell"
2241             enable ldbrx
2242         ;;
2243         e500v2)
2244             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2245             disable altivec
2246         ;;
2247         e500)
2248             cpuflags="-mcpu=8540 -mhard-float"
2249             disable altivec
2250         ;;
2251     esac
2252
2253 elif enabled x86; then
2254
2255     case $cpu in
2256         i[345]86|pentium)
2257             cpuflags="-march=$cpu"
2258             disable mmx
2259         ;;
2260         # targets that do NOT support conditional mov (cmov)
2261         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2262             cpuflags="-march=$cpu"
2263             disable cmov
2264         ;;
2265         # targets that do support conditional mov (cmov)
2266         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2267             cpuflags="-march=$cpu"
2268             enable cmov
2269             enable fast_cmov
2270         ;;
2271         # targets that do support conditional mov but on which it's slow
2272         pentium4|pentium4m|prescott|nocona)
2273             cpuflags="-march=$cpu"
2274             enable cmov
2275             disable fast_cmov
2276         ;;
2277     esac
2278
2279 elif enabled sparc; then
2280
2281     case $cpu in
2282         niagara)
2283             cpuflags="-mcpu=$cpu"
2284             disable vis
2285         ;;
2286         sparc64)
2287             cpuflags="-mcpu=v9"
2288         ;;
2289     esac
2290
2291 elif enabled arm; then
2292
2293     case $cpu in
2294         armv*)
2295             cpuflags="-march=$cpu"
2296             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2297         ;;
2298         *)
2299             cpuflags="-mcpu=$cpu"
2300             case $cpu in
2301                 cortex-a*)                               subarch=armv7a  ;;
2302                 cortex-r*)                               subarch=armv7r  ;;
2303                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2304                 arm11*)                                  subarch=armv6   ;;
2305                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2306                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2307             esac
2308         ;;
2309     esac
2310
2311 elif enabled alpha; then
2312
2313     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2314
2315 elif enabled bfin; then
2316
2317     cpuflags="-mcpu=$cpu"
2318
2319 elif enabled mips; then
2320
2321     cpuflags="-march=$cpu"
2322
2323 elif enabled avr32; then
2324
2325     case $cpu in
2326         ap7[02]0[0-2])
2327             subarch="avr32_ap"
2328             cpuflags="-mpart=$cpu"
2329         ;;
2330         ap)
2331             subarch="avr32_ap"
2332             cpuflags="-march=$cpu"
2333         ;;
2334         uc3[ab]*)
2335             subarch="avr32_uc"
2336             cpuflags="-mcpu=$cpu"
2337         ;;
2338         uc)
2339             subarch="avr32_uc"
2340             cpuflags="-march=$cpu"
2341         ;;
2342     esac
2343
2344 fi
2345
2346 add_cflags $cpuflags
2347 add_asflags $cpuflags
2348
2349 # compiler sanity check
2350 check_exec <<EOF
2351 int main(void){ return 0; }
2352 EOF
2353 if test "$?" != 0; then
2354     echo "$cc is unable to create an executable file."
2355     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2356         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2357         echo "Only do this if you know what cross compiling means."
2358     fi
2359     die "C compiler test failed."
2360 fi
2361
2362 add_cppflags -D_ISOC99_SOURCE
2363 check_cflags -std=c99
2364 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2365 #include <stdlib.h>
2366 EOF
2367 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2368 #include <stdlib.h>
2369 EOF
2370
2371 check_host_cflags -std=c99
2372 check_host_cflags -Wall
2373
2374 case "$arch" in
2375     alpha|ia64|mips|parisc|sparc)
2376         spic=$shared
2377     ;;
2378     x86)
2379         subarch="x86_32"
2380         check_cc <<EOF && subarch="x86_64"
2381         int test[(int)sizeof(char*) - 7];
2382 EOF
2383         if test "$subarch" = "x86_64"; then
2384             spic=$shared
2385         fi
2386     ;;
2387 esac
2388
2389 enable $subarch
2390 enabled spic && enable pic
2391
2392 # OS specific
2393 case $target_os in
2394     haiku)
2395         prefix_default="/boot/common"
2396         network_extralibs="-lnetwork"
2397         host_libs=
2398         ;;
2399     sunos)
2400         FFSERVERLDFLAGS=""
2401         SHFLAGS='-shared -Wl,-h,$$(@F)'
2402         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2403         network_extralibs="-lsocket -lnsl"
2404         add_cppflags -D__EXTENSIONS__
2405         nm_opts='-P -g'
2406         ;;
2407     netbsd)
2408         disable symver
2409         oss_indev_extralibs="-lossaudio"
2410         oss_outdev_extralibs="-lossaudio"
2411         ;;
2412     openbsd)
2413         enable malloc_aligned
2414         # On OpenBSD 4.5. the compiler does not use PIC unless
2415         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2416         # however the generated executable will not do anything
2417         # (simply quits with exit-code 1, no crash, no output).
2418         # Thus explicitly enable PIC here.
2419         enable pic
2420         disable symver
2421         SHFLAGS='-shared'
2422         oss_indev_extralibs="-lossaudio"
2423         oss_outdev_extralibs="-lossaudio"
2424         ;;
2425     dragonfly)
2426         enable malloc_aligned
2427         disable symver
2428         ;;
2429     freebsd)
2430         enable malloc_aligned
2431         ;;
2432     bsd/os)
2433         add_extralibs -lpoll -lgnugetopt
2434         strip="strip -d"
2435         ;;
2436     darwin)
2437         enable malloc_aligned
2438         gas="gas-preprocessor.pl $cc"
2439         enabled ppc && add_asflags -force_cpusubtype_ALL
2440         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2441         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2442         strip="${strip} -x"
2443         add_ldflags -Wl,-dynamic,-search_paths_first
2444         SLIBSUF=".dylib"
2445         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2446         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2447         FFSERVERLDFLAGS=-Wl,-bind_at_load
2448         objformat="macho"
2449         enabled x86_64 && objformat="macho64"
2450         enabled_any pic shared ||
2451             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2452         ;;
2453     mingw32*)
2454         if test $target_os = "mingw32ce"; then
2455             disable network
2456         else
2457             target_os=mingw32
2458         fi
2459         LIBTARGET=i386
2460         if enabled x86_64; then
2461             enable malloc_aligned
2462             LIBTARGET=x64
2463         elif enabled arm; then
2464             LIBTARGET=arm-wince
2465         fi
2466         shlibdir_default="$bindir_default"
2467         SLIBPREF=""
2468         SLIBSUF=".dll"
2469         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2470         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2471         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
2472         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2473         SLIB_INSTALL_LINKS=
2474         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2475         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2476         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'
2477         objformat="win32"
2478         enable dos_paths
2479         check_cflags -fno-common
2480         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2481                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2482                 die "ERROR: MinGW runtime version must be >= 3.15."
2483         add_cppflags -U__STRICT_ANSI__
2484         ;;
2485     cygwin*)
2486         target_os=cygwin
2487         shlibdir_default="$bindir_default"
2488         SLIBPREF="cyg"
2489         SLIBSUF=".dll"
2490         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2491         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2492         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2493         objformat="win32"
2494         enable dos_paths
2495         check_cflags -fno-common
2496         add_cppflags -U__STRICT_ANSI__
2497         ;;
2498     *-dos|freedos|opendos)
2499         network_extralibs="-lsocket"
2500         objformat="coff"
2501         enable dos_paths
2502         add_cppflags -U__STRICT_ANSI__
2503         ;;
2504     linux)
2505         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2506         enable dv1394
2507         ;;
2508     irix*)
2509         target_os=irix
2510         ranlib="echo ignoring ranlib"
2511         ;;
2512     os/2*)
2513         strip="lxlite -CS"
2514         ln_s="cp -f"
2515         objformat="aout"
2516         add_cppflags -D_GNU_SOURCE
2517         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2518         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2519         FFSERVERLDFLAGS=""
2520         LIBSUF="_s.a"
2521         SLIBPREF=""
2522         SLIBSUF=".dll"
2523         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2524         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2525         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2526           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2527           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2528           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2529           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2530           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2531         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2532           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2533         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2534         enable dos_paths
2535         ;;
2536     gnu/kfreebsd)
2537         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2538         ;;
2539     gnu)
2540         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2541         ;;
2542     qnx)
2543         add_cppflags -D_QNX_SOURCE
2544         network_extralibs="-lsocket"
2545         ;;
2546     symbian)
2547         SLIBSUF=".dll"
2548         enable dos_paths
2549         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2550         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2551         add_ldflags -Wl,--target1-abs,--no-undefined \
2552                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2553                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2554         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2555                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2556                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2557         ;;
2558     none)
2559         ;;
2560     *)
2561         die "Unknown OS '$target_os'."
2562         ;;
2563 esac
2564
2565 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2566
2567 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2568
2569 set_default $PATHS_LIST
2570
2571 # we need to build at least one lib type
2572 if ! enabled_any static shared; then
2573     cat <<EOF
2574 At least one library type must be built.
2575 Specify --enable-static to build the static libraries or --enable-shared to
2576 build the shared libraries as well. To only build the shared libraries specify
2577 --disable-static in addition to --enable-shared.
2578 EOF
2579     exit 1;
2580 fi
2581
2582 die_license_disabled() {
2583     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2584 }
2585
2586 die_license_disabled gpl libx264
2587 die_license_disabled gpl libxavs
2588 die_license_disabled gpl libxvid
2589 die_license_disabled gpl x11grab
2590
2591 die_license_disabled nonfree libfaac
2592
2593 die_license_disabled version3 libopencore_amrnb
2594 die_license_disabled version3 libopencore_amrwb
2595 die_license_disabled version3 libvo_aacenc
2596 die_license_disabled version3 libvo_amrwbenc
2597
2598 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2599
2600 disabled optimizations || check_cflags -fomit-frame-pointer
2601
2602 enable_pic() {
2603     enable pic
2604     add_cppflags -DPIC
2605     add_cflags   -fPIC
2606     add_asflags  -fPIC
2607 }
2608
2609 enabled pic && enable_pic
2610
2611 check_cc <<EOF || die "Symbol mangling check failed."
2612 int ff_extern;
2613 EOF
2614 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2615 extern_prefix=${sym%%ff_extern*}
2616
2617 check_cc <<EOF && enable inline_asm
2618 void foo(void) { __asm__ volatile ("" ::); }
2619 EOF
2620
2621 _restrict=
2622 for restrict_keyword in restrict __restrict__ __restrict; do
2623     check_cc <<EOF && _restrict=$restrict_keyword && break
2624 void foo(char * $restrict_keyword p);
2625 EOF
2626 done
2627
2628 check_cc <<EOF && enable attribute_packed
2629 struct { int x; } __attribute__((packed)) x;
2630 EOF
2631
2632 check_cc <<EOF && enable attribute_may_alias
2633 union { int x; } __attribute__((may_alias)) x;
2634 EOF
2635
2636 check_cc <<EOF || die "endian test failed"
2637 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2638 EOF
2639 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2640
2641 if enabled alpha; then
2642
2643     check_cflags -mieee
2644
2645 elif enabled arm; then
2646
2647     enabled thumb && check_cflags -mthumb || check_cflags -marm
2648     nogas=die
2649
2650     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2651         enable vfp_args
2652     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2653         case "${cross_prefix:-$cc}" in
2654             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2655             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2656 __asm__ (".eabi_attribute 28, 1");
2657 int main(void) { return 0; }
2658 EOF
2659         esac
2660         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2661     fi
2662
2663     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2664     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2665     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2666     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2667     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2668     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2669     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2670
2671     enabled_all armv6t2 shared !pic && enable_pic
2672
2673 elif enabled mips; then
2674
2675     check_asm loongson '"dmult.g $1, $2, $3"'
2676     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2677
2678 elif enabled ppc; then
2679
2680     enable local_aligned_8 local_aligned_16
2681
2682     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2683     check_asm ibm_asm   '"add 0, 0, 0"'
2684     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2685     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2686
2687     # AltiVec flags: The FSF version of GCC differs from the Apple version
2688     if enabled altivec; then
2689         nogas=warn
2690         check_cflags -maltivec -mabi=altivec &&
2691         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2692         check_cflags -faltivec
2693
2694         # check if our compiler supports Motorola AltiVec C API
2695         check_cc <<EOF || disable altivec
2696 $inc_altivec_h
2697 int main(void) {
2698     vector signed int v1, v2, v3;
2699     v1 = vec_add(v2,v3);
2700     return 0;
2701 }
2702 EOF
2703
2704         # check if our compiler supports braces for vector declarations
2705         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2706 $inc_altivec_h
2707 int main (void) { (vector int) {1}; return 0; }
2708 EOF
2709     fi
2710
2711 elif enabled sparc; then
2712
2713     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2714         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2715
2716 elif enabled x86; then
2717
2718     enable local_aligned_8 local_aligned_16
2719
2720     # check whether EBP is available on x86
2721     # As 'i' is stored on the stack, this program will crash
2722     # if the base pointer is used to access it because the
2723     # base pointer is cleared in the inline assembly code.
2724     check_exec_crash <<EOF && enable ebp_available
2725     volatile int i=0;
2726     __asm__ volatile (
2727         "xorl %%ebp, %%ebp"
2728     ::: "%ebp");
2729     return i;
2730 EOF
2731
2732     # check whether EBX is available on x86
2733     check_asm ebx_available '""::"b"(0)' &&
2734         check_asm ebx_available '"":::"%ebx"'
2735
2736     # check whether xmm clobbers are supported
2737     check_asm xmm_clobbers '"":::"%xmm0"'
2738
2739     # check whether binutils is new enough to compile SSSE3/MMX2
2740     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2741     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2742
2743     check_asm bswap '"bswap %%eax" ::: "%eax"'
2744
2745     if ! disabled_any asm mmx yasm; then
2746         if check_cmd $yasmexe --version; then
2747             enabled x86_64 && yasm_extra="-m amd64"
2748             yasm_debug="-g dwarf2"
2749         elif check_cmd nasm -v; then
2750             yasmexe=nasm
2751             yasm_debug="-g -F dwarf"
2752             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2753         fi
2754
2755         YASMFLAGS="-f $objformat $yasm_extra"
2756         enabled pic               && append YASMFLAGS "-DPIC"
2757         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2758         case "$objformat" in
2759             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2760         esac
2761
2762         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2763             die "yasm not found, use --disable-yasm for a crippled build"
2764         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2765     fi
2766
2767     case "$cpu" in
2768         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2769             disable fast_clz
2770         ;;
2771     esac
2772
2773 fi
2774
2775 if enabled asm; then
2776     as=${gas:=$as}
2777     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2778         $nogas "GNU assembler not found, install gas-preprocessor"
2779 fi
2780
2781 check_ldflags -Wl,--as-needed
2782
2783 if check_func dlopen; then
2784     ldl=
2785 elif check_func dlopen -ldl; then
2786     ldl=-ldl
2787 fi
2788
2789 if enabled network; then
2790     check_type "sys/types.h sys/socket.h" socklen_t
2791     check_type netdb.h "struct addrinfo"
2792     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2793     check_type netinet/in.h "struct sockaddr_in6"
2794     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2795     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2796     # Prefer arpa/inet.h over winsock2
2797     if check_header arpa/inet.h ; then
2798         check_func closesocket
2799     elif check_header winsock2.h ; then
2800         check_func_headers winsock2.h closesocket -lws2 && \
2801             network_extralibs="-lws2" || \
2802         { check_func_headers winsock2.h closesocket -lws2_32 && \
2803             network_extralibs="-lws2_32"; }
2804         check_type ws2tcpip.h socklen_t
2805         check_type ws2tcpip.h "struct addrinfo"
2806         check_type ws2tcpip.h "struct ipv6_mreq"
2807         check_type ws2tcpip.h "struct sockaddr_in6"
2808         check_type ws2tcpip.h "struct sockaddr_storage"
2809         check_struct winsock2.h "struct sockaddr" sa_len
2810     else
2811         disable network
2812     fi
2813 fi
2814
2815 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2816 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2817
2818 check_func  fcntl
2819 check_func  fork
2820 check_func  getaddrinfo $network_extralibs
2821 check_func  gethrtime
2822 check_func  getrusage
2823 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2824 check_func  inet_aton $network_extralibs
2825 check_func  isatty
2826 check_func  localtime_r
2827 check_func  ${malloc_prefix}memalign            && enable memalign
2828 check_func  mkstemp
2829 check_func  mmap
2830 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2831 check_func  setrlimit
2832 check_func  strerror_r
2833 check_func  strptime
2834 check_func  strtok_r
2835 check_func_headers conio.h kbhit
2836 check_func_headers io.h setmode
2837 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2838 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2839 check_func_headers windows.h GetProcessTimes
2840 check_func_headers windows.h MapViewOfFile
2841 check_func_headers windows.h VirtualAlloc
2842
2843 check_header dlfcn.h
2844 check_header dxva2api.h
2845 check_header libcrystalhd/libcrystalhd_if.h
2846 check_header malloc.h
2847 check_header poll.h
2848 check_header sys/mman.h
2849 check_header sys/resource.h
2850 check_header sys/select.h
2851 check_header termios.h
2852 check_header vdpau/vdpau.h
2853 check_header vdpau/vdpau_x11.h
2854 check_header X11/extensions/XvMClib.h
2855
2856 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2857
2858 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2859 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2860
2861 # check for some common methods of building with pthread support
2862 # do this before the optional library checks as some of them require pthreads
2863 if ! disabled pthreads && ! enabled w32threads; then
2864     enable pthreads
2865     if check_func pthread_create; then
2866         :
2867     elif check_func pthread_create -pthread; then
2868         add_cflags -pthread
2869         add_extralibs -pthread
2870     elif check_func pthread_create -pthreads; then
2871         add_cflags -pthreads
2872         add_extralibs -pthreads
2873     elif check_func pthread_create -lpthreadGC2; then
2874         add_extralibs -lpthreadGC2
2875     elif ! check_lib pthread.h pthread_create -lpthread; then
2876         disable pthreads
2877     fi
2878 fi
2879
2880 for thread in $THREADS_LIST; do
2881     if enabled $thread; then
2882         test -n "$thread_type" &&
2883             die "ERROR: Only one thread type must be selected." ||
2884             thread_type="$thread"
2885     fi
2886 done
2887
2888 check_lib math.h sin -lm && LIBM="-lm"
2889 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2890 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2891
2892 check_mathfunc exp2
2893 check_mathfunc exp2f
2894 check_mathfunc llrint
2895 check_mathfunc llrintf
2896 check_mathfunc log2
2897 check_mathfunc log2f
2898 check_mathfunc lrint
2899 check_mathfunc lrintf
2900 check_mathfunc round
2901 check_mathfunc roundf
2902 check_mathfunc trunc
2903 check_mathfunc truncf
2904
2905 # these are off by default, so fail if requested and not available
2906 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2907 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2908 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2909 enabled libdc1394  && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
2910 enabled libdirac   && require_pkg_config dirac                          \
2911     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2912     "dirac_decoder_init dirac_encoder_init"
2913 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2914 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2915 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2916 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2917 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2918 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2919 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2920 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
2921 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2922 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2923 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2924 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2925 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2926 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2927 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2928 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2929 enabled libvpx     && {
2930     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2931                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2932     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2933                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2934 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2935                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2936                         die "ERROR: libx264 version must be >= 0.115."; }
2937 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2938 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2939 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
2940                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
2941                         die "ERROR: openal not found"; } &&
2942                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
2943                         die "ERROR: openal version must be 1.1 or compatible"; }
2944 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2945
2946 SDL_CONFIG="${cross_prefix}sdl-config"
2947 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2948     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2949     enable sdl &&
2950     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2951 else
2952   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2953     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2954     sdl_libs=$("${SDL_CONFIG}" --libs)
2955     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
2956     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2957     enable sdl &&
2958     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2959   fi
2960 fi
2961 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
2962
2963 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2964
2965 check_header linux/fb.h
2966 check_header linux/videodev.h
2967 check_header linux/videodev2.h
2968 check_header sys/videoio.h
2969
2970 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2971 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2972 # w32api 3.12 had it defined wrong
2973 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2974
2975 check_type "dshow.h" IBaseFilter
2976
2977 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2978 { check_header dev/bktr/ioctl_meteor.h &&
2979   check_header dev/bktr/ioctl_bt848.h; } ||
2980 { check_header machine/ioctl_meteor.h &&
2981   check_header machine/ioctl_bt848.h; } ||
2982 { check_header dev/video/meteor/ioctl_meteor.h &&
2983   check_header dev/video/bktr/ioctl_bt848.h; } ||
2984 check_header dev/ic/bt8xx.h
2985
2986 check_header sndio.h
2987 if check_struct sys/soundcard.h audio_buf_info bytes; then
2988     enable_safe sys/soundcard.h
2989 else
2990     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2991     #include <sys/soundcard.h>
2992     audio_buf_info abc;
2993 EOF
2994 fi
2995 check_header soundcard.h
2996
2997 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2998
2999 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
3000
3001 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3002
3003 enabled x11grab                         &&
3004 check_header X11/Xlib.h                 &&
3005 check_header X11/extensions/XShm.h      &&
3006 check_header X11/extensions/Xfixes.h    &&
3007 check_func XOpenDisplay -lX11           &&
3008 check_func XShmCreateImage -lX11 -lXext &&
3009 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3010
3011 if ! disabled vaapi; then
3012     check_lib va/va.h vaInitialize -lva && {
3013         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3014         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3015     } || disable vaapi
3016 fi
3017
3018 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3019 check_cpp_condition \
3020     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3021     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3022       disable vdpau; }
3023 fi
3024
3025 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3026
3027 # add some useful compiler flags if supported
3028 check_cflags -Wdeclaration-after-statement
3029 check_cflags -Wall
3030 check_cflags -Wno-parentheses
3031 check_cflags -Wno-switch
3032 check_cflags -Wno-format-zero-length
3033 check_cflags -Wdisabled-optimization
3034 check_cflags -Wpointer-arith
3035 check_cflags -Wredundant-decls
3036 check_cflags -Wno-pointer-sign
3037 check_cflags -Wcast-qual
3038 check_cflags -Wwrite-strings
3039 check_cflags -Wtype-limits
3040 check_cflags -Wundef
3041 check_cflags -Wmissing-prototypes
3042 check_cflags -Wno-pointer-to-int-cast
3043 enabled extra_warnings && check_cflags -Winline
3044
3045 # add some linker flags
3046 check_ldflags -Wl,--warn-common
3047 check_ldflags -Wl,-rpath-link=libpostproc:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3048 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3049
3050 echo "X{};" > $TMPV
3051 if test_ldflags -Wl,--version-script,$TMPV; then
3052     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3053     check_cc <<EOF && enable symver_asm_label
3054 void ff_foo(void) __asm__ ("av_foo@VERSION");
3055 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3056 EOF
3057     check_cc <<EOF && enable symver_gnu_asm
3058 __asm__(".symver ff_foo,av_foo@VERSION");
3059 void ff_foo(void) {}
3060 EOF
3061 fi
3062
3063 if [ -n "$optflags" ]; then
3064     add_cflags $optflags
3065 elif enabled small; then
3066     add_cflags $size_cflags
3067 elif enabled optimizations; then
3068     add_cflags $speed_cflags
3069 else
3070     add_cflags $noopt_cflags
3071 fi
3072 check_cflags -fno-math-errno
3073 check_cflags -fno-signed-zeros
3074
3075 if enabled icc; then
3076     # Just warnings, no remarks
3077     check_cflags -w1
3078     # -wd: Disable following warnings
3079     # 144, 167, 556: -Wno-pointer-sign
3080     # 1292: attribute "foo" ignored
3081     # 10006: ignoring unknown option -fno-signed-zeros
3082     # 10148: ignoring unknown option -Wno-parentheses
3083     # 10156: ignoring option '-W'; no argument required
3084     check_cflags -wd144,167,556,1292,10006,10148,10156
3085     # 11030: Warning unknown option --as-needed
3086     # 10156: ignoring option '-export'; no argument required
3087     check_ldflags -wd10156,11030
3088     # Allow to compile with optimizations
3089     check_ldflags -march=$cpu
3090     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3091     enable ebp_available
3092     if enabled x86_32; then
3093         test ${icc_version%%.*} -ge 11 && \
3094             check_cflags -falign-stack=maintain-16-byte || \
3095             disable aligned_stack
3096     fi
3097 elif enabled ccc; then
3098     # disable some annoying warnings
3099     add_cflags -msg_disable cvtu32to64
3100     add_cflags -msg_disable embedcomment
3101     add_cflags -msg_disable needconstext
3102     add_cflags -msg_disable nomainieee
3103     add_cflags -msg_disable ptrmismatch1
3104     add_cflags -msg_disable unreachcode
3105 elif enabled gcc; then
3106     check_cflags -fno-tree-vectorize
3107     check_cflags -Werror=implicit-function-declaration
3108     check_cflags -Werror=missing-prototypes
3109 elif enabled llvm_gcc; then
3110     check_cflags -mllvm -stack-alignment=16
3111 elif enabled clang; then
3112     check_cflags -mllvm -stack-alignment=16
3113     check_cflags -Qunused-arguments
3114 elif enabled armcc; then
3115     # 2523: use of inline assembler is deprecated
3116     add_cflags -W${armcc_opt},--diag_suppress=2523
3117     add_cflags -W${armcc_opt},--diag_suppress=1207
3118     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3119     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3120     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3121     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3122 elif enabled tms470; then
3123     add_cflags -pds=824 -pds=837
3124 elif enabled pathscale; then
3125     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3126 fi
3127
3128 enabled_any $THREADS_LIST      && enable threads
3129
3130 check_deps $CONFIG_LIST       \
3131            $CONFIG_EXTRA      \
3132            $HAVE_LIST         \
3133            $DECODER_LIST      \
3134            $ENCODER_LIST      \
3135            $HWACCEL_LIST      \
3136            $PARSER_LIST       \
3137            $BSF_LIST          \
3138            $DEMUXER_LIST      \
3139            $MUXER_LIST        \
3140            $FILTER_LIST       \
3141            $INDEV_LIST        \
3142            $OUTDEV_LIST       \
3143            $PROTOCOL_LIST     \
3144            $ACODEC_TESTS      \
3145            $VCODEC_TESTS      \
3146            $LAVF_TESTS        \
3147            $LAVFI_TESTS       \
3148            $SEEK_TESTS        \
3149
3150 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3151
3152 if test $target_os == "haiku"; then
3153     disable memalign
3154     disable posix_memalign
3155 fi
3156
3157 ! enabled_any memalign posix_memalign malloc_aligned &&
3158     enabled_any $need_memalign && enable memalign_hack
3159
3160 echo "install prefix            $prefix"
3161 echo "source path               $source_path"
3162 echo "C compiler                $cc"
3163 echo "ARCH                      $arch ($cpu)"
3164 if test "$build_suffix" != ""; then
3165     echo "build suffix              $build_suffix"
3166 fi
3167 if test "$extra_version" != ""; then
3168     echo "version string suffix     $extra_version"
3169 fi
3170 echo "big-endian                ${bigendian-no}"
3171 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3172 if enabled x86; then
3173     echo "${yasmexe}                      ${yasm-no}"
3174     echo "MMX enabled               ${mmx-no}"
3175     echo "MMX2 enabled              ${mmx2-no}"
3176     echo "3DNow! enabled            ${amd3dnow-no}"
3177     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3178     echo "SSE enabled               ${sse-no}"
3179     echo "SSSE3 enabled             ${ssse3-no}"
3180     echo "AVX enabled               ${avx-no}"
3181     echo "CMOV enabled              ${cmov-no}"
3182     echo "CMOV is fast              ${fast_cmov-no}"
3183     echo "EBX available             ${ebx_available-no}"
3184     echo "EBP available             ${ebp_available-no}"
3185 fi
3186 if enabled arm; then
3187     echo "ARMv5TE enabled           ${armv5te-no}"
3188     echo "ARMv6 enabled             ${armv6-no}"
3189     echo "ARMv6T2 enabled           ${armv6t2-no}"
3190     echo "ARM VFP enabled           ${armvfp-no}"
3191     echo "IWMMXT enabled            ${iwmmxt-no}"
3192     echo "NEON enabled              ${neon-no}"
3193 fi
3194 if enabled mips; then
3195     echo "MMI enabled               ${mmi-no}"
3196 fi
3197 if enabled ppc; then
3198     echo "AltiVec enabled           ${altivec-no}"
3199     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3200     echo "dcbzl available           ${dcbzl-no}"
3201 fi
3202 if enabled sparc; then
3203     echo "VIS enabled               ${vis-no}"
3204 fi
3205 echo "debug symbols             ${debug-no}"
3206 echo "strip symbols             ${stripping-no}"
3207 echo "optimize for size         ${small-no}"
3208 echo "optimizations             ${optimizations-no}"
3209 echo "static                    ${static-no}"
3210 echo "shared                    ${shared-no}"
3211 echo "postprocessing support    ${postproc-no}"
3212 echo "new filter support        ${avfilter-no}"
3213 echo "network support           ${network-no}"
3214 echo "threading support         ${thread_type-no}"
3215 echo "SDL support               ${sdl-no}"
3216 echo "Sun medialib support      ${mlib-no}"
3217 echo "libdxva2 enabled          ${dxva2-no}"
3218 echo "libva enabled             ${vaapi-no}"
3219 echo "libvdpau enabled          ${vdpau-no}"
3220 echo "AVISynth enabled          ${avisynth-no}"
3221 echo "libcelt enabled           ${libcelt-no}"
3222 echo "frei0r enabled            ${frei0r-no}"
3223 echo "libdc1394 support         ${libdc1394-no}"
3224 echo "libdirac enabled          ${libdirac-no}"
3225 echo "libfaac enabled           ${libfaac-no}"
3226 echo "libgsm enabled            ${libgsm-no}"
3227 echo "libmp3lame enabled        ${libmp3lame-no}"
3228 echo "libnut enabled            ${libnut-no}"
3229 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3230 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3231 echo "libopencv support         ${libopencv-no}"
3232 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3233 echo "librtmp enabled           ${librtmp-no}"
3234 echo "libschroedinger enabled   ${libschroedinger-no}"
3235 echo "libspeex enabled          ${libspeex-no}"
3236 echo "libtheora enabled         ${libtheora-no}"
3237 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3238 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3239 echo "libvorbis enabled         ${libvorbis-no}"
3240 echo "libvpx enabled            ${libvpx-no}"
3241 echo "libx264 enabled           ${libx264-no}"
3242 echo "libxavs enabled           ${libxavs-no}"
3243 echo "libxvid enabled           ${libxvid-no}"
3244 echo "openal enabled            ${openal-no}"
3245 echo "zlib enabled              ${zlib-no}"
3246 echo "bzlib enabled             ${bzlib-no}"
3247 echo
3248
3249 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3250     echo "Enabled ${type}s:"
3251     eval list=\$$(toupper $type)_LIST
3252     print_enabled '_*' $list | sort | pr -r -3 -t
3253     echo
3254 done
3255
3256 license="LGPL version 2.1 or later"
3257 if enabled nonfree; then
3258     license="nonfree and unredistributable"
3259 elif enabled gplv3; then
3260     license="GPL version 3 or later"
3261 elif enabled lgplv3; then
3262     license="LGPL version 3 or later"
3263 elif enabled gpl; then
3264     license="GPL version 2 or later"
3265 fi
3266
3267 echo "License: $license"
3268
3269 echo "Creating config.mak and config.h..."
3270
3271 test -e Makefile || $ln_s "$source_path/Makefile" .
3272
3273 enabled stripping || strip="echo skipping strip"
3274
3275 config_files="$TMPH config.mak"
3276
3277 cat > config.mak <<EOF
3278 # Automatically generated by configure - do not modify!
3279 ifndef FFMPEG_CONFIG_MAK
3280 FFMPEG_CONFIG_MAK=1
3281 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3282 prefix=$prefix
3283 LIBDIR=\$(DESTDIR)$libdir
3284 SHLIBDIR=\$(DESTDIR)$shlibdir
3285 INCDIR=\$(DESTDIR)$incdir
3286 BINDIR=\$(DESTDIR)$bindir
3287 DATADIR=\$(DESTDIR)$datadir
3288 MANDIR=\$(DESTDIR)$mandir
3289 SRC_PATH=$source_path
3290 ifndef MAIN_MAKEFILE
3291 SRC_PATH:=\$(SRC_PATH:.%=..%)
3292 endif
3293 CC_IDENT=$cc_ident
3294 ARCH=$arch
3295 CC=$cc
3296 AS=$as
3297 LD=$ld
3298 DEPCC=$dep_cc
3299 YASM=$yasmexe
3300 YASMDEP=$yasmexe
3301 AR=$ar
3302 RANLIB=$ranlib
3303 CP=cp -p
3304 LN_S=$ln_s
3305 STRIP=$strip
3306 CPPFLAGS=$CPPFLAGS
3307 CFLAGS=$CFLAGS
3308 ASFLAGS=$ASFLAGS
3309 AS_O=$CC_O
3310 CC_O=$CC_O
3311 LDFLAGS=$LDFLAGS
3312 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3313 SHFLAGS=$SHFLAGS
3314 YASMFLAGS=$YASMFLAGS
3315 BUILDSUF=$build_suffix
3316 FULLNAME=$FULLNAME
3317 LIBPREF=$LIBPREF
3318 LIBSUF=$LIBSUF
3319 LIBNAME=$LIBNAME
3320 SLIBPREF=$SLIBPREF
3321 SLIBSUF=$SLIBSUF
3322 EXESUF=$EXESUF
3323 EXTRA_VERSION=$extra_version
3324 DEPFLAGS=$DEPFLAGS
3325 CCDEP=$CCDEP
3326 ASDEP=$ASDEP
3327 CC_DEPFLAGS=$CC_DEPFLAGS
3328 AS_DEPFLAGS=$AS_DEPFLAGS
3329 HOSTCC=$host_cc
3330 HOSTCFLAGS=$host_cflags
3331 HOSTEXESUF=$HOSTEXESUF
3332 HOSTLDFLAGS=$host_ldflags
3333 HOSTLIBS=$host_libs
3334 TARGET_EXEC=$target_exec
3335 TARGET_PATH=$target_path
3336 SDL_LIBS=$sdl_libs
3337 SDL_CFLAGS=$sdl_cflags
3338 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3339 EXTRALIBS=$extralibs
3340 INSTALL=$install
3341 LIBTARGET=${LIBTARGET}
3342 SLIBNAME=${SLIBNAME}
3343 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3344 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3345 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3346 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3347 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3348 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3349 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3350 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3351 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3352 EOF
3353
3354 get_version(){
3355     name=$1
3356     file=$source_path/$2
3357     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3358     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3359     lcname=$(tolower $name)
3360     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3361     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3362 }
3363
3364 get_version LIBSWSCALE  libswscale/swscale.h
3365 get_version LIBPOSTPROC libpostproc/postprocess.h
3366 get_version LIBAVCODEC  libavcodec/version.h
3367 get_version LIBAVDEVICE libavdevice/avdevice.h
3368 get_version LIBAVFORMAT libavformat/version.h
3369 get_version LIBAVUTIL   libavutil/avutil.h
3370 get_version LIBAVFILTER libavfilter/avfilter.h
3371
3372 cat > $TMPH <<EOF
3373 /* Automatically generated by configure - do not modify! */
3374 #ifndef FFMPEG_CONFIG_H
3375 #define FFMPEG_CONFIG_H
3376 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3377 #define FFMPEG_LICENSE "$(c_escape $license)"
3378 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3379 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3380 #define CC_TYPE "$cc_type"
3381 #define CC_VERSION $cc_version
3382 #define restrict $_restrict
3383 #define EXTERN_PREFIX "${extern_prefix}"
3384 #define EXTERN_ASM ${extern_prefix}
3385 #define SLIBSUF "$SLIBSUF"
3386 EOF
3387
3388 test -n "$malloc_prefix" &&
3389     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3390
3391 if enabled small || disabled optimizations; then
3392     echo "#undef  av_always_inline"  >> $TMPH
3393     if enabled small; then
3394         echo "#define av_always_inline inline"  >> $TMPH
3395     else
3396         echo "#define av_always_inline av_unused"  >> $TMPH
3397     fi
3398 fi
3399
3400 if enabled yasm; then
3401     append config_files $TMPASM
3402     printf '' >$TMPASM
3403 fi
3404
3405 print_config ARCH_   "$config_files" $ARCH_LIST
3406 print_config HAVE_   "$config_files" $HAVE_LIST
3407 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3408                                      $CONFIG_EXTRA      \
3409                                      $DECODER_LIST      \
3410                                      $ENCODER_LIST      \
3411                                      $HWACCEL_LIST      \
3412                                      $PARSER_LIST       \
3413                                      $BSF_LIST          \
3414                                      $DEMUXER_LIST      \
3415                                      $MUXER_LIST        \
3416                                      $FILTER_LIST       \
3417                                      $PROTOCOL_LIST     \
3418                                      $INDEV_LIST        \
3419                                      $OUTDEV_LIST       \
3420
3421 cat >>config.mak <<EOF
3422 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3423 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3424 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3425 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3426 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3427 EOF
3428
3429 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3430 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3431
3432 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3433 cp_if_changed $TMPH config.h
3434 touch .config
3435
3436 enabled yasm && cp_if_changed $TMPASM config.asm
3437
3438 cat > $TMPH <<EOF
3439 /* Generated by ffconf */
3440 #ifndef AVUTIL_AVCONFIG_H
3441 #define AVUTIL_AVCONFIG_H
3442 EOF
3443
3444 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3445
3446 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3447
3448 cp_if_changed $TMPH libavutil/avconfig.h
3449
3450 test -n "$WARNINGS" && printf "\n$WARNINGS"
3451
3452 # build pkg-config files
3453
3454 pkgconfig_generate(){
3455 name=$1
3456 shortname=${name#lib}${build_suffix}
3457 comment=$2
3458 version=$3
3459 libs=$4
3460 requires=$5
3461 enabled ${name#lib} || return 0
3462 mkdir -p $name
3463 cat <<EOF > $name/$name.pc
3464 prefix=$prefix
3465 exec_prefix=\${prefix}
3466 libdir=$libdir
3467 includedir=$incdir
3468
3469 Name: $name
3470 Description: $comment
3471 Version: $version
3472 Requires: $(enabled shared || echo $requires)
3473 Requires.private: $(enabled shared && echo $requires)
3474 Conflicts:
3475 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3476 Libs.private: $(enabled shared && echo $libs)
3477 Cflags: -I\${includedir}
3478 EOF
3479 cat <<EOF > $name/$name-uninstalled.pc
3480 prefix=
3481 exec_prefix=
3482 libdir=\${pcfiledir}
3483 includedir=${source_path}
3484
3485 Name: $name
3486 Description: $comment
3487 Version: $version
3488 Requires: $requires
3489 Conflicts:
3490 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3491 Cflags: -I\${includedir}
3492 EOF
3493 }
3494
3495 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3496 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3497 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3498 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3499 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3500 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3501 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"