Fix out of bound reads/writes in the TIFF decoder.
[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/ffmpeg]
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-ffplay         disable ffplay build
85   --disable-ffprobe        disable ffprobe build
86   --disable-ffserver       disable ffserver build
87   --disable-avdevice       disable libavdevice build
88   --disable-avcodec        disable libavcodec build
89   --disable-avformat       disable libavformat build
90   --disable-swscale        disable libswscale build
91   --disable-postproc       disable libpostproc build
92   --disable-avfilter       disable video filter support [no]
93   --disable-pthreads       disable pthreads [auto]
94   --enable-w32threads      use Win32 threads [no]
95   --enable-x11grab         enable X11 grabbing [no]
96   --disable-network        disable network support [no]
97   --enable-gray            enable full grayscale support (slower color)
98   --disable-swscale-alpha  disable alpha channel support in swscale
99   --disable-fastdiv        disable table-based division
100   --enable-small           optimize for size instead of speed
101   --disable-aandct         disable AAN DCT code
102   --disable-dct            disable DCT code
103   --disable-fft            disable FFT code
104   --disable-golomb         disable Golomb code
105   --disable-huffman        disable Huffman code
106   --disable-lpc            disable LPC code
107   --disable-mdct           disable MDCT code
108   --disable-rdft           disable RDFT code
109   --enable-vaapi           enable VAAPI code
110   --enable-vdpau           enable VDPAU code
111   --disable-dxva2          disable DXVA2 code
112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
114   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
115   --disable-everything     disable all components listed below
116   --disable-encoder=NAME   disable encoder NAME
117   --enable-encoder=NAME    enable encoder NAME
118   --disable-encoders       disable all encoders
119   --disable-decoder=NAME   disable decoder NAME
120   --enable-decoder=NAME    enable decoder NAME
121   --disable-decoders       disable all decoders
122   --disable-hwaccel=NAME   disable hwaccel NAME
123   --enable-hwaccel=NAME    enable hwaccel NAME
124   --disable-hwaccels       disable all hwaccels
125   --disable-muxer=NAME     disable muxer NAME
126   --enable-muxer=NAME      enable muxer NAME
127   --disable-muxers         disable all muxers
128   --disable-demuxer=NAME   disable demuxer NAME
129   --enable-demuxer=NAME    enable demuxer NAME
130   --disable-demuxers       disable all demuxers
131   --enable-parser=NAME     enable parser NAME
132   --disable-parser=NAME    disable parser NAME
133   --disable-parsers        disable all parsers
134   --enable-bsf=NAME        enable bitstream filter NAME
135   --disable-bsf=NAME       disable bitstream filter NAME
136   --disable-bsfs           disable all bitstream filters
137   --enable-protocol=NAME   enable protocol NAME
138   --disable-protocol=NAME  disable protocol NAME
139   --disable-protocols      disable all protocols
140   --disable-indev=NAME     disable input device NAME
141   --disable-outdev=NAME    disable output device NAME
142   --disable-indevs         disable input devices
143   --disable-outdevs        disable output devices
144   --disable-devices        disable all devices
145   --enable-filter=NAME     enable filter NAME
146   --disable-filter=NAME    disable filter NAME
147   --disable-filters        disable all filters
148   --list-decoders          show all available decoders
149   --list-encoders          show all available encoders
150   --list-hwaccels          show all available hardware accelerators
151   --list-muxers            show all available muxers
152   --list-demuxers          show all available demuxers
153   --list-parsers           show all available parsers
154   --list-protocols         show all available protocols
155   --list-bsfs              show all available bitstream filters
156   --list-indevs            show all available input devices
157   --list-outdevs           show all available output devices
158   --list-filters           show all available filters
159
160 External library support:
161   --enable-avisynth        enable reading of AVISynth script files [no]
162   --enable-bzlib           enable bzlib [autodetect]
163   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
164   --enable-frei0r          enable frei0r video filtering
165   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
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 encoding and 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-mlib            enable Sun medialib [no]
193   --enable-zlib            enable zlib [autodetect]
194
195 Advanced options (experts only):
196   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
197   --enable-cross-compile   assume a cross-compiler is used
198   --sysroot=PATH           root of cross-build tree
199   --sysinclude=PATH        location of cross-build system headers
200   --target-os=OS           compiler targets OS [$target_os]
201   --target-exec=CMD        command to run executables on target
202   --target-path=DIR        path to view of build directory on target
203   --nm=NM                  use nm tool
204   --ar=AR                  use archive tool AR [$ar_default]
205   --as=AS                  use assembler AS [$as_default]
206   --cc=CC                  use C compiler CC [$cc_default]
207   --ld=LD                  use linker LD
208   --host-cc=HOSTCC         use host C compiler HOSTCC
209   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
210   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
211   --host-libs=HLIBS        use libs HLIBS when linking for host
212   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
213   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
214   --extra-libs=ELIBS       add ELIBS [$ELIBS]
215   --extra-version=STRING   version string suffix []
216   --build-suffix=SUFFIX    library name suffix []
217   --arch=ARCH              select architecture [$arch]
218   --cpu=CPU                select the minimum required CPU (affects
219                            instruction selection, may crash on older CPUs)
220   --disable-asm            disable all assembler optimizations
221   --disable-altivec        disable AltiVec optimizations
222   --disable-amd3dnow       disable 3DNow! optimizations
223   --disable-amd3dnowext    disable 3DNow! extended optimizations
224   --disable-mmx            disable MMX optimizations
225   --disable-mmx2           disable MMX2 optimizations
226   --disable-sse            disable SSE optimizations
227   --disable-ssse3          disable SSSE3 optimizations
228   --disable-avx            disable AVX optimizations
229   --disable-armv5te        disable armv5te optimizations
230   --disable-armv6          disable armv6 optimizations
231   --disable-armv6t2        disable armv6t2 optimizations
232   --disable-armvfp         disable ARM VFP optimizations
233   --disable-iwmmxt         disable iwmmxt optimizations
234   --disable-mmi            disable MMI optimizations
235   --disable-neon           disable neon optimizations
236   --disable-vis            disable VIS optimizations
237   --disable-yasm           disable use of yasm assembler
238   --enable-pic             build position-independent code
239   --malloc-prefix=PFX      prefix malloc and related names with PFX
240   --enable-sram            allow use of on-chip SRAM
241   --disable-symver         disable symbol versioning
242
243 Developer options (useful when working on FFmpeg itself):
244   --disable-debug          disable debugging symbols
245   --enable-debug=LEVEL     set the debug level [$debuglevel]
246   --disable-optimizations  disable compiler optimizations
247   --enable-extra-warnings  enable more compiler warnings
248   --disable-stripping      disable stripping of executables and shared libraries
249   --samples=PATH           location of test samples for FATE, if not set use
250                            \$FATE_SAMPLES at make invocation time.
251
252 NOTE: Object files are built at the place where configure is launched.
253 EOF
254   exit 0
255 }
256
257 quotes='""'
258
259 log(){
260     echo "$@" >> $logfile
261 }
262
263 log_file(){
264     log BEGIN $1
265     pr -n -t $1 >> $logfile
266     log END $1
267 }
268
269 echolog(){
270     log "$@"
271     echo "$@"
272 }
273
274 warn(){
275     log "WARNING: $*"
276     WARNINGS="${WARNINGS}WARNING: $*\n"
277 }
278
279 die(){
280     echolog "$@"
281     cat <<EOF
282
283 If you think configure made a mistake, make sure you are using the latest
284 version from Git.  If the latest version fails, report the problem to the
285 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
286 EOF
287     if disabled logging; then
288         cat <<EOF
289 Rerun configure with logging enabled (do not use --disable-logging), and
290 include the log this produces with your report.
291 EOF
292     else
293 cat <<EOF
294 Include the log file "$logfile" produced by configure as this will help
295 solving the problem.
296 EOF
297     fi
298     exit 1
299 }
300
301 # Avoid locale weirdness, besides we really just want to translate ASCII.
302 toupper(){
303     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
304 }
305
306 tolower(){
307     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
308 }
309
310 c_escape(){
311     echo "$*" | sed 's/["\\]/\\\0/g'
312 }
313
314 sh_quote(){
315     v=$(echo "$1" | sed "s/'/'\\\\''/g")
316     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
317     echo "$v"
318 }
319
320 cleanws(){
321     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
322 }
323
324 filter(){
325     pat=$1
326     shift
327     for v; do
328         eval "case $v in $pat) echo $v ;; esac"
329     done
330 }
331
332 filter_out(){
333     pat=$1
334     shift
335     for v; do
336         eval "case $v in $pat) ;; *) echo $v ;; esac"
337     done
338 }
339
340 map(){
341     m=$1
342     shift
343     for v; do eval $m; done
344 }
345
346 set_all(){
347     value=$1
348     shift
349     for var in $*; do
350         eval $var=$value
351     done
352 }
353
354 set_weak(){
355     value=$1
356     shift
357     for var; do
358         eval : \${$var:=$value}
359     done
360 }
361
362 set_safe(){
363     var=$1
364     shift
365     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
366 }
367
368 get_safe(){
369     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
370 }
371
372 pushvar(){
373     for var in $*; do
374         eval level=\${${var}_level:=0}
375         eval ${var}_${level}="\$$var"
376         eval ${var}_level=$(($level+1))
377     done
378 }
379
380 popvar(){
381     for var in $*; do
382         eval level=\${${var}_level:-0}
383         test $level = 0 && continue
384         eval level=$(($level-1))
385         eval $var="\${${var}_${level}}"
386         eval ${var}_level=$level
387         eval unset ${var}_${level}
388     done
389 }
390
391 enable(){
392     set_all yes $*
393 }
394
395 disable(){
396     set_all no $*
397 }
398
399 enable_weak(){
400     set_weak yes $*
401 }
402
403 disable_weak(){
404     set_weak no $*
405 }
406
407 enable_safe(){
408     for var; do
409         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
410     done
411 }
412
413 disable_safe(){
414     for var; do
415         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
416     done
417 }
418
419 do_enable_deep(){
420     for var; do
421         enabled $var && continue
422         eval sel="\$${var}_select"
423         eval sgs="\$${var}_suggest"
424         pushvar var sgs
425         enable_deep $sel
426         popvar sgs
427         enable_deep_weak $sgs
428         popvar var
429     done
430 }
431
432 enable_deep(){
433     do_enable_deep $*
434     enable $*
435 }
436
437 enable_deep_weak(){
438     do_enable_deep $*
439     enable_weak $*
440 }
441
442 enabled(){
443     test "${1#!}" = "$1" && op== || op=!=
444     eval test "x\$${1#!}" $op "xyes"
445 }
446
447 disabled(){
448     test "${1#!}" = "$1" && op== || op=!=
449     eval test "x\$${1#!}" $op "xno"
450 }
451
452 enabled_all(){
453     for opt; do
454         enabled $opt || return 1
455     done
456 }
457
458 disabled_all(){
459     for opt; do
460         disabled $opt || return 1
461     done
462 }
463
464 enabled_any(){
465     for opt; do
466         enabled $opt && return 0
467     done
468 }
469
470 disabled_any(){
471     for opt; do
472         disabled $opt && return 0
473     done
474     return 1
475 }
476
477 set_default(){
478     for opt; do
479         eval : \${$opt:=\$${opt}_default}
480     done
481 }
482
483 is_in(){
484     value=$1
485     shift
486     for var in $*; do
487         [ $var = $value ] && return 0
488     done
489     return 1
490 }
491
492 check_deps(){
493     for cfg; do
494         cfg="${cfg#!}"
495         enabled ${cfg}_checking && die "Circular dependency for $cfg."
496         disabled ${cfg}_checking && continue
497         enable ${cfg}_checking
498
499         eval dep_all="\$${cfg}_deps"
500         eval dep_any="\$${cfg}_deps_any"
501         eval dep_sel="\$${cfg}_select"
502         eval dep_sgs="\$${cfg}_suggest"
503         eval dep_ifa="\$${cfg}_if"
504         eval dep_ifn="\$${cfg}_if_any"
505
506         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
507         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
508         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
509
510         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
511         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
512         enabled_all  $dep_all || disable $cfg
513         enabled_any  $dep_any || disable $cfg
514         disabled_any $dep_sel && disable $cfg
515
516         if enabled $cfg; then
517             eval dep_extralibs="\$${cfg}_extralibs"
518             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
519             enable_deep $dep_sel
520             enable_deep_weak $dep_sgs
521         fi
522
523         disable ${cfg}_checking
524     done
525 }
526
527 print_config_h(){
528     enabled $1 && v=1 || v=0
529     echo "#define $2 $v"
530 }
531
532 print_config_mak(){
533     enabled $1 && v= || v=!
534     echo "$v$2=yes"
535 }
536
537 print_config_asm(){
538     enabled $1 && echo "%define $2"
539 }
540
541 print_config(){
542     pfx=$1
543     files=$2
544     shift 2
545     for cfg; do
546         ucname="$(toupper $cfg)"
547         for f in $files; do
548             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
549         done
550     done
551 }
552
553 print_enabled(){
554     test "$1" = -n && end=" " && shift || end="\n"
555     suf=$1
556     shift
557     for v; do
558         enabled $v && printf "%s$end" ${v%$suf};
559     done
560 }
561
562 append(){
563     var=$1
564     shift
565     eval "$var=\"\$$var $*\""
566 }
567
568 prepend(){
569     var=$1
570     shift
571     eval "$var=\"$* \$$var\""
572 }
573
574 add_cppflags(){
575     append CPPFLAGS $($filter_cppflags "$@")
576 }
577
578 add_cflags(){
579     append CFLAGS $($filter_cflags "$@")
580 }
581
582 add_asflags(){
583     append ASFLAGS $($filter_asflags "$@")
584 }
585
586 add_ldflags(){
587     append LDFLAGS "$@"
588 }
589
590 add_extralibs(){
591     prepend extralibs "$@"
592 }
593
594 check_cmd(){
595     log "$@"
596     "$@" >> $logfile 2>&1
597 }
598
599 check_cc(){
600     log check_cc "$@"
601     cat > $TMPC
602     log_file $TMPC
603     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
604 }
605
606 check_cpp(){
607     log check_cpp "$@"
608     cat > $TMPC
609     log_file $TMPC
610     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
611 }
612
613 check_as(){
614     log check_as "$@"
615     cat > $TMPC
616     log_file $TMPC
617     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
618 }
619
620 check_asm(){
621     log check_asm "$@"
622     name="$1"
623     code="$2"
624     shift 2
625     disable $name
626     check_as "$@" <<EOF && enable $name
627 void foo(void){ __asm__ volatile($code); }
628 EOF
629 }
630
631 check_yasm(){
632     log check_yasm "$@"
633     echo "$1" > $TMPS
634     log_file $TMPS
635     shift 1
636     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
637 }
638
639 check_ld(){
640     log check_ld "$@"
641     flags=''
642     libs=''
643     for f; do
644         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
645     done
646     check_cc $($filter_cflags $flags) || return
647     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
648 }
649
650 check_cppflags(){
651     log check_cppflags "$@"
652     set -- $($filter_cppflags "$@")
653     check_cc "$@" <<EOF && append CPPFLAGS "$@"
654 int x;
655 EOF
656 }
657
658 check_cflags(){
659     log check_cflags "$@"
660     set -- $($filter_cflags "$@")
661     check_cc "$@" <<EOF && append CFLAGS "$@"
662 int x;
663 EOF
664 }
665
666 test_ldflags(){
667     log test_ldflags "$@"
668     check_ld "$@" <<EOF
669 int main(void){ return 0; }
670 EOF
671 }
672
673 check_ldflags(){
674     log check_ldflags "$@"
675     test_ldflags "$@" && add_ldflags "$@"
676 }
677
678 check_header(){
679     log check_header "$@"
680     header=$1
681     shift
682     disable_safe $header
683     check_cpp "$@" <<EOF && enable_safe $header
684 #include <$header>
685 int x;
686 EOF
687 }
688
689 check_func(){
690     log check_func "$@"
691     func=$1
692     shift
693     disable $func
694     check_ld "$@" <<EOF && enable $func
695 extern int $func();
696 int main(void){ $func(); }
697 EOF
698 }
699
700 check_mathfunc(){
701     log check_mathfunc "$@"
702     func=$1
703     shift
704     disable $func
705     check_ld "$@" <<EOF && enable $func
706 #include <math.h>
707 float foo(float f) { return $func(f); }
708 int main(void){ return 0; }
709 EOF
710 }
711
712 check_func_headers(){
713     log check_func_headers "$@"
714     headers=$1
715     funcs=$2
716     shift 2
717     {
718         for hdr in $headers; do
719             echo "#include <$hdr>"
720         done
721         for func in $funcs; do
722             echo "long check_$func(void) { return (long) $func; }"
723         done
724         echo "int main(void) { return 0; }"
725     } | check_ld "$@" && enable $funcs && enable_safe $headers
726 }
727
728 check_cpp_condition(){
729     log check_cpp_condition "$@"
730     header=$1
731     condition=$2
732     shift 2
733     check_cpp $($filter_cppflags "$@") <<EOF
734 #include <$header>
735 #if !($condition)
736 #error "unsatisfied condition: $condition"
737 #endif
738 EOF
739 }
740
741 check_lib(){
742     log check_lib "$@"
743     header="$1"
744     func="$2"
745     shift 2
746     check_header $header && check_func $func "$@" && add_extralibs "$@"
747 }
748
749 check_lib2(){
750     log check_lib2 "$@"
751     headers="$1"
752     funcs="$2"
753     shift 2
754     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
755 }
756
757 check_pkg_config(){
758     log check_pkg_config "$@"
759     pkg="$1"
760     headers="$2"
761     funcs="$3"
762     shift 3
763     $pkg_config --exists $pkg 2>/dev/null || return
764     pkg_cflags=$($pkg_config --cflags $pkg)
765     pkg_libs=$($pkg_config --libs $pkg)
766     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
767         set_safe ${pkg}_cflags $pkg_cflags   &&
768         set_safe ${pkg}_libs   $pkg_libs
769 }
770
771 check_exec(){
772     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
773 }
774
775 check_exec_crash(){
776     code=$(cat)
777
778     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
779     # are safe but may not be available everywhere.  Thus we use
780     # raise(SIGTERM) instead.  The check is run in a subshell so we
781     # can redirect the "Terminated" message from the shell.  SIGBUS
782     # is not defined by standard C so it is used conditionally.
783
784     (check_exec "$@") >> $logfile 2>&1 <<EOF
785 #include <signal.h>
786 static void sighandler(int sig){
787     raise(SIGTERM);
788 }
789 int main(void){
790     signal(SIGILL, sighandler);
791     signal(SIGFPE, sighandler);
792     signal(SIGSEGV, sighandler);
793 #ifdef SIGBUS
794     signal(SIGBUS, sighandler);
795 #endif
796     { $code }
797 }
798 EOF
799 }
800
801 check_type(){
802     log check_type "$@"
803     headers=$1
804     type=$2
805     shift 2
806     disable_safe "$type"
807     incs=""
808     for hdr in $headers; do
809         incs="$incs
810 #include <$hdr>"
811     done
812     check_cc "$@" <<EOF && enable_safe "$type"
813 $incs
814 $type v;
815 EOF
816 }
817
818 check_struct(){
819     log check_type "$@"
820     headers=$1
821     struct=$2
822     member=$3
823     shift 3
824     disable_safe "${struct}_${member}"
825     incs=""
826     for hdr in $headers; do
827         incs="$incs
828 #include <$hdr>"
829     done
830     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
831 $incs
832 const void *p = &(($struct *)0)->$member;
833 EOF
834 }
835
836 require(){
837     name="$1"
838     header="$2"
839     func="$3"
840     shift 3
841     check_lib $header $func "$@" || die "ERROR: $name not found"
842 }
843
844 require2(){
845     name="$1"
846     headers="$2"
847     func="$3"
848     shift 3
849     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
850 }
851
852 require_pkg_config(){
853     pkg="$1"
854     check_pkg_config "$@" || die "ERROR: $pkg not found"
855     add_cflags    $(get_safe ${pkg}_cflags)
856     add_extralibs $(get_safe ${pkg}_libs)
857 }
858
859 check_host_cc(){
860     log check_host_cc "$@"
861     cat > $TMPC
862     log_file $TMPC
863     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
864 }
865
866 check_host_cflags(){
867     log check_host_cflags "$@"
868     check_host_cc "$@" <<EOF && append host_cflags "$@"
869 int x;
870 EOF
871 }
872
873 apply(){
874     file=$1
875     shift
876     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
877 }
878
879 cp_if_changed(){
880     cmp -s "$1" "$2" &&
881         echo "$2 is unchanged" ||
882         cp -f "$1" "$2"
883 }
884
885 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
886 # system-dependent things.
887
888 COMPONENT_LIST="
889     bsfs
890     decoders
891     demuxers
892     encoders
893     filters
894     hwaccels
895     indevs
896     muxers
897     outdevs
898     parsers
899     protocols
900 "
901
902 CONFIG_LIST="
903     $COMPONENT_LIST
904     aandct
905     ac3dsp
906     avcodec
907     avdevice
908     avfilter
909     avformat
910     avisynth
911     bzlib
912     crystalhd
913     dct
914     doc
915     dwt
916     dxva2
917     fastdiv
918     ffmpeg
919     ffplay
920     ffprobe
921     ffserver
922     fft
923     frei0r
924     golomb
925     gpl
926     gray
927     h264dsp
928     h264pred
929     hardcoded_tables
930     huffman
931     libaacplus
932     libcdio
933     libcelt
934     libdc1394
935     libdirac
936     libfaac
937     libfreetype
938     libgsm
939     libmp3lame
940     libnut
941     libopencore_amrnb
942     libopencore_amrwb
943     libopencv
944     libopenjpeg
945     librtmp
946     libschroedinger
947     libspeex
948     libtheora
949     libvo_aacenc
950     libvo_amrwbenc
951     libvorbis
952     libvpx
953     libx264
954     libxavs
955     libxvid
956     lpc
957     lsp
958     mdct
959     memalign_hack
960     mlib
961     mpegaudiodsp
962     network
963     nonfree
964     pic
965     postproc
966     rdft
967     rtpdec
968     runtime_cpudetect
969     shared
970     sinewin
971     small
972     sram
973     static
974     swscale
975     swscale_alpha
976     vaapi
977     vdpau
978     version3
979     x11grab
980     zlib
981 "
982
983 THREADS_LIST='
984     pthreads
985     w32threads
986 '
987
988 ARCH_LIST='
989     alpha
990     arm
991     avr32
992     avr32_ap
993     avr32_uc
994     bfin
995     ia64
996     m68k
997     mips
998     mips64
999     parisc
1000     ppc
1001     ppc64
1002     s390
1003     sh4
1004     sparc
1005     sparc64
1006     tomi
1007     x86
1008     x86_32
1009     x86_64
1010 '
1011
1012 ARCH_EXT_LIST='
1013     altivec
1014     amd3dnow
1015     amd3dnowext
1016     armv5te
1017     armv6
1018     armv6t2
1019     armvfp
1020     avx
1021     iwmmxt
1022     mmi
1023     mmx
1024     mmx2
1025     neon
1026     ppc4xx
1027     sse
1028     ssse3
1029     vfpv3
1030     vis
1031 '
1032
1033 HAVE_LIST_PUB='
1034     bigendian
1035     fast_unaligned
1036 '
1037
1038 HAVE_LIST="
1039     $ARCH_EXT_LIST
1040     $HAVE_LIST_PUB
1041     $THREADS_LIST
1042     aligned_stack
1043     alsa_asoundlib_h
1044     altivec_h
1045     arpa_inet_h
1046     attribute_may_alias
1047     attribute_packed
1048     bswap
1049     closesocket
1050     cmov
1051     dcbzl
1052     dev_bktr_ioctl_bt848_h
1053     dev_bktr_ioctl_meteor_h
1054     dev_ic_bt8xx_h
1055     dev_video_meteor_ioctl_meteor_h
1056     dev_video_bktr_ioctl_bt848_h
1057     dlfcn_h
1058     dlopen
1059     dos_paths
1060     ebp_available
1061     ebx_available
1062     exp2
1063     exp2f
1064     fast_64bit
1065     fast_clz
1066     fast_cmov
1067     fcntl
1068     fork
1069     getaddrinfo
1070     gethrtime
1071     GetProcessMemoryInfo
1072     GetProcessTimes
1073     getrusage
1074     gnu_as
1075     struct_rusage_ru_maxrss
1076     ibm_asm
1077     inet_aton
1078     inline_asm
1079     isatty
1080     kbhit
1081     ldbrx
1082     llrint
1083     llrintf
1084     local_aligned_16
1085     local_aligned_8
1086     localtime_r
1087     log2
1088     log2f
1089     loongson
1090     lrint
1091     lrintf
1092     lzo1x_999_compress
1093     machine_ioctl_bt848_h
1094     machine_ioctl_meteor_h
1095     malloc_h
1096     MapViewOfFile
1097     memalign
1098     mkstemp
1099     mmap
1100     pld
1101     posix_memalign
1102     round
1103     roundf
1104     sdl
1105     sdl_video_size
1106     setmode
1107     sndio_h
1108     socklen_t
1109     soundcard_h
1110     poll_h
1111     setrlimit
1112     strerror_r
1113     strtok_r
1114     struct_addrinfo
1115     struct_ipv6_mreq
1116     struct_sockaddr_in6
1117     struct_sockaddr_sa_len
1118     struct_sockaddr_storage
1119     symver
1120     symver_gnu_asm
1121     symver_asm_label
1122     sys_mman_h
1123     sys_resource_h
1124     sys_select_h
1125     sys_soundcard_h
1126     sys_videoio_h
1127     ten_operands
1128     termios_h
1129     threads
1130     trunc
1131     truncf
1132     vfp_args
1133     VirtualAlloc
1134     winsock2_h
1135     xform_asm
1136     xmm_clobbers
1137     yasm
1138 "
1139
1140 # options emitted with CONFIG_ prefix but not available on command line
1141 CONFIG_EXTRA="
1142     avutil
1143     gplv3
1144     lgplv3
1145 "
1146
1147 CMDLINE_SELECT="
1148     $ARCH_EXT_LIST
1149     $CONFIG_LIST
1150     $THREADS_LIST
1151     asm
1152     cross_compile
1153     debug
1154     extra_warnings
1155     logging
1156     optimizations
1157     stripping
1158     symver
1159     yasm
1160 "
1161
1162 PATHS_LIST='
1163     bindir
1164     datadir
1165     incdir
1166     libdir
1167     mandir
1168     prefix
1169     shlibdir
1170 '
1171
1172 CMDLINE_SET="
1173     $PATHS_LIST
1174     ar
1175     arch
1176     as
1177     build_suffix
1178     cc
1179     cpu
1180     cross_prefix
1181     dep_cc
1182     extra_version
1183     host_cc
1184     host_cflags
1185     host_ldflags
1186     host_libs
1187     host_os
1188     install
1189     ld
1190     logfile
1191     malloc_prefix
1192     nm
1193     pkg_config
1194     samples
1195     strip
1196     sysinclude
1197     sysroot
1198     target_exec
1199     target_os
1200     target_path
1201 "
1202
1203 CMDLINE_APPEND="
1204     extra_cflags
1205 "
1206
1207 # code dependency declarations
1208
1209 # architecture extensions
1210
1211 armv5te_deps="arm"
1212 armv6_deps="arm"
1213 armv6t2_deps="arm"
1214 armvfp_deps="arm"
1215 iwmmxt_deps="arm"
1216 neon_deps="arm"
1217 vfpv3_deps="armvfp"
1218
1219 mmi_deps="mips"
1220
1221 altivec_deps="ppc"
1222 ppc4xx_deps="ppc"
1223
1224 vis_deps="sparc"
1225
1226 x86_64_suggest="cmov fast_cmov"
1227 amd3dnow_deps="mmx"
1228 amd3dnowext_deps="amd3dnow"
1229 mmx_deps="x86"
1230 mmx2_deps="mmx"
1231 sse_deps="mmx"
1232 ssse3_deps="sse"
1233 avx_deps="ssse3"
1234
1235 aligned_stack_if_any="ppc x86"
1236 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1237 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1238 fast_unaligned_if_any="armv6 ppc x86"
1239
1240 need_memalign="altivec neon sse"
1241 inline_asm_deps="!tms470"
1242
1243 symver_if_any="symver_asm_label symver_gnu_asm"
1244
1245 # subsystems
1246 dct_select="rdft"
1247 mdct_select="fft"
1248 rdft_select="fft"
1249 mpegaudiodsp_select="dct"
1250
1251 # decoders / encoders / hardware accelerators
1252 aac_decoder_select="mdct sinewin"
1253 aac_encoder_select="mdct sinewin"
1254 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1255 ac3_decoder_select="mdct ac3dsp ac3_parser"
1256 ac3_encoder_select="mdct ac3dsp"
1257 ac3_fixed_encoder_select="mdct ac3dsp"
1258 alac_encoder_select="lpc"
1259 amrnb_decoder_select="lsp"
1260 amrwb_decoder_select="lsp"
1261 atrac1_decoder_select="mdct sinewin"
1262 atrac3_decoder_select="mdct"
1263 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1264 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1265 cavs_decoder_select="golomb"
1266 cook_decoder_select="mdct sinewin"
1267 cscd_decoder_suggest="zlib"
1268 dca_decoder_select="mdct"
1269 dnxhd_encoder_select="aandct"
1270 dxa_decoder_select="zlib"
1271 eac3_decoder_select="ac3_decoder"
1272 eac3_encoder_select="mdct ac3dsp"
1273 eamad_decoder_select="aandct"
1274 eatgq_decoder_select="aandct"
1275 eatqi_decoder_select="aandct"
1276 ffv1_decoder_select="golomb"
1277 flac_decoder_select="golomb"
1278 flac_encoder_select="golomb lpc"
1279 flashsv_decoder_select="zlib"
1280 flashsv_encoder_select="zlib"
1281 flashsv2_encoder_select="zlib"
1282 flv_decoder_select="h263_decoder"
1283 flv_encoder_select="h263_encoder"
1284 fraps_decoder_select="huffman"
1285 h261_encoder_select="aandct"
1286 h263_decoder_select="h263_parser"
1287 h263_encoder_select="aandct"
1288 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1289 h263i_decoder_select="h263_decoder"
1290 h263p_encoder_select="h263_encoder"
1291 h264_decoder_select="golomb h264dsp h264pred"
1292 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1293 h264_dxva2_hwaccel_deps="dxva2api_h"
1294 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1295 h264_vaapi_hwaccel_select="vaapi"
1296 h264_vdpau_decoder_select="vdpau h264_decoder"
1297 imc_decoder_select="fft mdct sinewin"
1298 jpegls_decoder_select="golomb"
1299 jpegls_encoder_select="golomb"
1300 ljpeg_encoder_select="aandct"
1301 loco_decoder_select="golomb"
1302 mjpeg_encoder_select="aandct"
1303 mlp_decoder_select="mlp_parser"
1304 mp1_decoder_select="mpegaudiodsp"
1305 mp2_decoder_select="mpegaudiodsp"
1306 mp3adu_decoder_select="mpegaudiodsp"
1307 mp3_decoder_select="mpegaudiodsp"
1308 mp3on4_decoder_select="mpegaudiodsp"
1309 mp1float_decoder_select="mpegaudiodsp"
1310 mp2float_decoder_select="mpegaudiodsp"
1311 mp3adufloat_decoder_select="mpegaudiodsp"
1312 mp3float_decoder_select="mpegaudiodsp"
1313 mp3on4float_decoder_select="mpegaudiodsp"
1314 mpeg1video_encoder_select="aandct"
1315 mpeg2video_encoder_select="aandct"
1316 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1317 mpeg4_encoder_select="h263_encoder"
1318 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1319 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1320 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1321 mpeg2_crystalhd_decoder_select="crystalhd"
1322 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1323 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1324 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1325 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1326 mpeg4_crystalhd_decoder_select="crystalhd"
1327 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1328 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1329 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1330 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1331 msmpeg4_crystalhd_decoder_select="crystalhd"
1332 msmpeg4v1_decoder_select="h263_decoder"
1333 msmpeg4v1_encoder_select="h263_encoder"
1334 msmpeg4v2_decoder_select="h263_decoder"
1335 msmpeg4v2_encoder_select="h263_encoder"
1336 msmpeg4v3_decoder_select="h263_decoder"
1337 msmpeg4v3_encoder_select="h263_encoder"
1338 nellymoser_decoder_select="mdct sinewin"
1339 nellymoser_encoder_select="mdct sinewin"
1340 png_decoder_select="zlib"
1341 png_encoder_select="zlib"
1342 qcelp_decoder_select="lsp"
1343 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1344 ra_144_encoder_select="lpc"
1345 rv10_decoder_select="h263_decoder"
1346 rv10_encoder_select="h263_encoder"
1347 rv20_decoder_select="h263_decoder"
1348 rv20_encoder_select="h263_encoder"
1349 rv30_decoder_select="golomb h264pred"
1350 rv40_decoder_select="golomb h264pred"
1351 shorten_decoder_select="golomb"
1352 sipr_decoder_select="lsp"
1353 snow_decoder_select="dwt"
1354 snow_encoder_select="aandct dwt"
1355 sonic_decoder_select="golomb"
1356 sonic_encoder_select="golomb"
1357 sonic_ls_encoder_select="golomb"
1358 svq1_encoder_select="aandct"
1359 svq3_decoder_select="golomb h264dsp h264pred"
1360 svq3_decoder_suggest="zlib"
1361 theora_decoder_select="vp3_decoder"
1362 tiff_decoder_suggest="zlib"
1363 tiff_encoder_suggest="zlib"
1364 truehd_decoder_select="mlp_decoder"
1365 tscc_decoder_select="zlib"
1366 twinvq_decoder_select="mdct lsp sinewin"
1367 vc1_decoder_select="h263_decoder"
1368 vc1_crystalhd_decoder_select="crystalhd"
1369 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1370 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1371 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1372 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1373 vorbis_decoder_select="mdct"
1374 vorbis_encoder_select="mdct"
1375 vp6_decoder_select="huffman"
1376 vp6a_decoder_select="vp6_decoder"
1377 vp6f_decoder_select="vp6_decoder"
1378 vp8_decoder_select="h264pred"
1379 wmapro_decoder_select="mdct sinewin"
1380 wmav1_decoder_select="mdct sinewin"
1381 wmav1_encoder_select="mdct sinewin"
1382 wmav2_decoder_select="mdct sinewin"
1383 wmav2_encoder_select="mdct sinewin"
1384 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1385 wmv1_decoder_select="h263_decoder"
1386 wmv1_encoder_select="h263_encoder"
1387 wmv2_decoder_select="h263_decoder"
1388 wmv2_encoder_select="h263_encoder"
1389 wmv3_decoder_select="vc1_decoder"
1390 wmv3_crystalhd_decoder_select="crystalhd"
1391 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1392 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1393 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1394 zlib_decoder_select="zlib"
1395 zlib_encoder_select="zlib"
1396 zmbv_decoder_select="zlib"
1397 zmbv_encoder_select="zlib"
1398
1399 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1400 vaapi_deps="va_va_h"
1401 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1402
1403 # parsers
1404 h264_parser_select="golomb h264dsp h264pred"
1405
1406 # external libraries
1407 libaacplus_encoder_deps="libaacplus"
1408 libcelt_decoder_deps="libcelt"
1409 libdirac_decoder_deps="libdirac !libschroedinger"
1410 libdirac_encoder_deps="libdirac"
1411 libfaac_encoder_deps="libfaac"
1412 libgsm_decoder_deps="libgsm"
1413 libgsm_encoder_deps="libgsm"
1414 libgsm_ms_decoder_deps="libgsm"
1415 libgsm_ms_encoder_deps="libgsm"
1416 libmp3lame_encoder_deps="libmp3lame"
1417 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1418 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1419 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1420 libopenjpeg_decoder_deps="libopenjpeg"
1421 libschroedinger_decoder_deps="libschroedinger"
1422 libschroedinger_encoder_deps="libschroedinger"
1423 libspeex_decoder_deps="libspeex"
1424 libspeex_encoder_deps="libspeex"
1425 libtheora_encoder_deps="libtheora"
1426 libvo_aacenc_encoder_deps="libvo_aacenc"
1427 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1428 libvorbis_encoder_deps="libvorbis"
1429 libvpx_decoder_deps="libvpx"
1430 libvpx_encoder_deps="libvpx"
1431 libx264_encoder_deps="libx264"
1432 libxavs_encoder_deps="libxavs"
1433 libxvid_encoder_deps="libxvid"
1434
1435 # demuxers / muxers
1436 ac3_demuxer_select="ac3_parser"
1437 asf_stream_muxer_select="asf_muxer"
1438 avisynth_demuxer_deps="avisynth"
1439 dirac_demuxer_select="dirac_parser"
1440 eac3_demuxer_select="ac3_parser"
1441 flac_demuxer_select="flac_parser"
1442 ipod_muxer_select="mov_muxer"
1443 libnut_demuxer_deps="libnut"
1444 libnut_muxer_deps="libnut"
1445 matroska_audio_muxer_select="matroska_muxer"
1446 matroska_demuxer_suggest="zlib bzlib"
1447 mov_demuxer_suggest="zlib"
1448 mp3_demuxer_select="mpegaudio_parser"
1449 mp4_muxer_select="mov_muxer"
1450 mpegtsraw_demuxer_select="mpegts_demuxer"
1451 mxf_d10_muxer_select="mxf_muxer"
1452 ogg_demuxer_select="golomb"
1453 psp_muxer_select="mov_muxer"
1454 rtp_demuxer_select="sdp_demuxer"
1455 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1456 rtsp_demuxer_select="http_protocol rtpdec"
1457 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1458 sap_demuxer_select="sdp_demuxer"
1459 sap_muxer_select="rtp_muxer rtp_protocol"
1460 sdp_demuxer_select="rtpdec"
1461 spdif_muxer_select="aac_parser"
1462 tg2_muxer_select="mov_muxer"
1463 tgp_muxer_select="mov_muxer"
1464 w64_demuxer_deps="wav_demuxer"
1465
1466 # indevs / outdevs
1467 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1468 alsa_outdev_deps="alsa_asoundlib_h"
1469 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1470 dshow_indev_deps="IBaseFilter"
1471 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1472 dv1394_indev_deps="dv1394 dv_demuxer"
1473 fbdev_indev_deps="linux_fb_h"
1474 jack_indev_deps="jack_jack_h sem_timedwait"
1475 libdc1394_indev_deps="libdc1394"
1476 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1477 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1478 sdl_outdev_deps="sdl"
1479 sndio_indev_deps="sndio_h"
1480 sndio_outdev_deps="sndio_h"
1481 v4l_indev_deps="linux_videodev_h"
1482 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1483 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1484 vfwcap_indev_extralibs="-lavicap32"
1485 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1486 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1487
1488 # protocols
1489 gopher_protocol_deps="network"
1490 http_protocol_deps="network"
1491 http_protocol_select="tcp_protocol"
1492 mmsh_protocol_select="http_protocol"
1493 mmst_protocol_deps="network"
1494 rtmp_protocol_select="tcp_protocol"
1495 rtp_protocol_select="udp_protocol"
1496 tcp_protocol_deps="network"
1497 udp_protocol_deps="network"
1498
1499 # filters
1500 blackframe_filter_deps="gpl"
1501 cropdetect_filter_deps="gpl"
1502 drawtext_filter_deps="libfreetype"
1503 frei0r_filter_deps="frei0r dlopen strtok_r"
1504 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1505 hqdn3d_filter_deps="gpl"
1506 movie_filter_deps="avcodec avformat"
1507 mp_filter_deps="gpl avcodec"
1508 negate_filter_deps="lut_filter"
1509 ocv_filter_deps="libopencv"
1510 scale_filter_deps="swscale"
1511 yadif_filter_deps="gpl"
1512
1513 # libraries
1514 avdevice_deps="avcodec avformat"
1515 avformat_deps="avcodec"
1516 postproc_deps="gpl"
1517
1518 # programs
1519 ffmpeg_deps="avcodec avformat swscale"
1520 ffmpeg_select="buffer_filter buffersink_filter"
1521 ffplay_deps="avcodec avformat swscale sdl"
1522 ffplay_select="rdft"
1523 ffprobe_deps="avcodec avformat"
1524 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1525 ffserver_extralibs='$ldl'
1526
1527 doc_deps="texi2html"
1528
1529 # tests
1530
1531 test_deps(){
1532     suf1=$1
1533     suf2=$2
1534     shift 2
1535     for v; do
1536         dep=${v%=*}
1537         tests=${v#*=}
1538         for name in ${tests}; do
1539             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1540         done
1541     done
1542 }
1543
1544 set_ne_test_deps(){
1545     eval ${1}_be_test_deps="bigendian"
1546     eval ${1}_le_test_deps="!bigendian"
1547 }
1548
1549 test_deps _encoder _decoder                                             \
1550     adpcm_g726=g726                                                     \
1551     adpcm_ima_qt                                                        \
1552     adpcm_ima_wav                                                       \
1553     adpcm_ms                                                            \
1554     adpcm_swf                                                           \
1555     adpcm_yamaha=adpcm_yam                                              \
1556     alac                                                                \
1557     asv1                                                                \
1558     asv2                                                                \
1559     bmp                                                                 \
1560     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1561     dvvideo="dv dv50"                                                   \
1562     ffv1                                                                \
1563     flac                                                                \
1564     flashsv                                                             \
1565     flv                                                                 \
1566     gif                                                                 \
1567     h261                                                                \
1568     h263="h263 h263p"                                                   \
1569     huffyuv                                                             \
1570     jpegls                                                              \
1571     mjpeg="jpg mjpeg ljpeg"                                             \
1572     mp2                                                                 \
1573     mpeg1video="mpeg mpeg1b"                                            \
1574     mpeg2video="mpeg2 mpeg2thread"                                      \
1575     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1576     msmpeg4v3=msmpeg4                                                   \
1577     msmpeg4v2                                                           \
1578     pbm=pbmpipe                                                         \
1579     pcx                                                                 \
1580     pgm="pgm pgmpipe"                                                   \
1581     png                                                                 \
1582     ppm="ppm ppmpipe"                                                   \
1583     rawvideo="rgb yuv"                                                  \
1584     roq                                                                 \
1585     rv10                                                                \
1586     rv20                                                                \
1587     sgi                                                                 \
1588     snow="snow snowll"                                                  \
1589     svq1                                                                \
1590     targa=tga                                                           \
1591     tiff                                                                \
1592     wmav1                                                               \
1593     wmav2                                                               \
1594     wmv1                                                                \
1595     wmv2                                                                \
1596
1597 test_deps _muxer _demuxer                                               \
1598     aiff                                                                \
1599     pcm_alaw=alaw                                                       \
1600     asf                                                                 \
1601     au                                                                  \
1602     avi                                                                 \
1603     dv=dv_fmt                                                           \
1604     ffm                                                                 \
1605     flv=flv_fmt                                                         \
1606     gxf                                                                 \
1607     matroska=mkv                                                        \
1608     mmf                                                                 \
1609     mov                                                                 \
1610     pcm_mulaw=mulaw                                                     \
1611     mxf                                                                 \
1612     nut                                                                 \
1613     ogg                                                                 \
1614     rawvideo=pixfmt                                                     \
1615     rm                                                                  \
1616     swf                                                                 \
1617     mpegts=ts                                                           \
1618     voc                                                                 \
1619     wav                                                                 \
1620     yuv4mpegpipe=yuv4mpeg                                               \
1621
1622 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1623 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1624
1625 set_ne_test_deps pixdesc
1626 set_ne_test_deps pixfmts_copy
1627 set_ne_test_deps pixfmts_crop
1628 set_ne_test_deps pixfmts_hflip
1629 set_ne_test_deps pixfmts_null
1630 set_ne_test_deps pixfmts_pad
1631 set_ne_test_deps pixfmts_scale
1632 set_ne_test_deps pixfmts_vflip
1633
1634 # default parameters
1635
1636 logfile="config.log"
1637
1638 # installation paths
1639 prefix_default="/usr/local"
1640 bindir_default='${prefix}/bin'
1641 datadir_default='${prefix}/share/ffmpeg'
1642 incdir_default='${prefix}/include'
1643 libdir_default='${prefix}/lib'
1644 mandir_default='${prefix}/share/man'
1645 shlibdir_default="$libdir_default"
1646
1647 # toolchain
1648 ar_default="ar"
1649 cc_default="gcc"
1650 cc_version=\"unknown\"
1651 host_cc_default="gcc"
1652 install="install"
1653 ln_s="ln -sf"
1654 nm_default="nm"
1655 objformat="elf"
1656 pkg_config_default=pkg-config
1657 ranlib="ranlib"
1658 strip_default="strip"
1659 yasmexe="yasm"
1660 nogas=":"
1661
1662 nm_opts='-g'
1663
1664 # machine
1665 arch_default=$(uname -m)
1666 cpu="generic"
1667
1668 # OS
1669 target_os_default=$(tolower $(uname -s))
1670 host_os=$target_os_default
1671
1672 # configurable options
1673 enable avcodec
1674 enable avdevice
1675 enable avfilter
1676 enable avformat
1677 enable avutil
1678 enable asm
1679 enable debug
1680 enable doc
1681 enable fastdiv
1682 enable ffmpeg
1683 enable ffplay
1684 enable ffprobe
1685 enable ffserver
1686 enable network
1687 enable optimizations
1688 enable postproc
1689 enable protocols
1690 enable static
1691 enable stripping
1692 enable swscale
1693 enable swscale_alpha
1694
1695 # build settings
1696 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1697 FFSERVERLDFLAGS=-Wl,-E
1698 LIBPREF="lib"
1699 LIBSUF=".a"
1700 FULLNAME='$(NAME)$(BUILDSUF)'
1701 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1702 SLIBPREF="lib"
1703 SLIBSUF=".so"
1704 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1705 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1706 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1707 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1708
1709 CC_O='-o $@'
1710
1711 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1712 host_libs='-lm'
1713
1714 target_path='$(CURDIR)'
1715
1716 # since the object filename is not given with the -MM flag, the compiler
1717 # is only able to print the basename, and we must add the path ourselves
1718 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1719 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1720
1721 # find source path
1722 if test -f configure; then
1723     source_path="$(pwd)"
1724     disable source_path_used
1725 else
1726     source_path=$(cd $(dirname "$0"); pwd)
1727     enable source_path_used
1728     echo "$source_path" | grep -q '[[:blank:]]' &&
1729         die "Out of tree builds are impossible with whitespace in source path."
1730     test -e "$source_path/config.h" &&
1731         die "Out of tree builds are impossible with config.h in source dir."
1732 fi
1733
1734 for v in "$@"; do
1735     r=${v#*=}
1736     l=${v%"$r"}
1737     r=$(sh_quote "$r")
1738     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1739 done
1740
1741 find_things(){
1742     thing=$1
1743     pattern=$2
1744     file=$source_path/$3
1745     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1746 }
1747
1748 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1749 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1750 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1751 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1752 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1753 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1754 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1755 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1756 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1757 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1758 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1759
1760 find_tests(){
1761     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1762 }
1763
1764 ACODEC_TESTS=$(find_tests acodec)
1765 VCODEC_TESTS=$(find_tests vsynth1)
1766 LAVF_TESTS=$(find_tests lavf)
1767 LAVFI_TESTS=$(find_tests lavfi)
1768 SEEK_TESTS=$(find_tests seek seek_)
1769
1770 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1771
1772 for n in $COMPONENT_LIST; do
1773     v=$(toupper ${n%s})_LIST
1774     eval enable \$$v
1775     eval ${n}_if_any="\$$v"
1776 done
1777
1778 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1779
1780 die_unknown(){
1781     echo "Unknown option \"$1\"."
1782     echo "See $0 --help for available options."
1783     exit 1
1784 }
1785
1786 show_list() {
1787     suffix=_$1
1788     shift
1789     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1790     exit 0
1791 }
1792
1793 for opt do
1794     optval="${opt#*=}"
1795     case "$opt" in
1796     --extra-ldflags=*) add_ldflags $optval
1797     ;;
1798     --extra-libs=*) add_extralibs $optval
1799     ;;
1800     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1801     ;;
1802     --enable-debug=*) debuglevel="$optval"
1803     ;;
1804     --disable-everything)
1805     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1806     ;;
1807     --enable-*=*|--disable-*=*)
1808     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1809     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1810     eval list=\$$(toupper $thing)_LIST
1811     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1812     $action $(filter "$name" $list)
1813     ;;
1814     --enable-?*|--disable-?*)
1815     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1816     if is_in $option $COMPONENT_LIST; then
1817         test $action = disable && action=unset
1818         eval $action \$$(toupper ${option%s})_LIST
1819     elif is_in $option $CMDLINE_SELECT; then
1820         $action $option
1821     else
1822         die_unknown $opt
1823     fi
1824     ;;
1825     --list-*)
1826         NAME="${opt#--list-}"
1827         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1828         NAME=${NAME%s}
1829         eval show_list $NAME \$$(toupper $NAME)_LIST
1830     ;;
1831     --help|-h) show_help
1832     ;;
1833     *)
1834     optname="${opt%%=*}"
1835     optname="${optname#--}"
1836     optname=$(echo "$optname" | sed 's/-/_/g')
1837     if is_in $optname $CMDLINE_SET; then
1838         eval $optname='$optval'
1839     elif is_in $optname $CMDLINE_APPEND; then
1840         append $optname "$optval"
1841     else
1842          die_unknown $opt
1843     fi
1844     ;;
1845     esac
1846 done
1847
1848 disabled logging && logfile=/dev/null
1849
1850 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1851 set >> $logfile
1852
1853 test -n "$cross_prefix" && enable cross_compile
1854
1855 if enabled cross_compile; then
1856     test -n "$arch" && test -n "$target_os" ||
1857         die "Must specify target arch and OS when cross-compiling"
1858 fi
1859
1860 set_default arch target_os
1861
1862 ar_default="${cross_prefix}${ar_default}"
1863 cc_default="${cross_prefix}${cc_default}"
1864 nm_default="${cross_prefix}${nm_default}"
1865 pkg_config_default="${cross_prefix}${pkg_config_default}"
1866 ranlib="${cross_prefix}${ranlib}"
1867 strip_default="${cross_prefix}${strip_default}"
1868
1869 sysinclude_default="${sysroot}/usr/include"
1870
1871 set_default cc nm pkg_config strip sysinclude
1872 enabled cross_compile || host_cc_default=$cc
1873 set_default host_cc
1874
1875 if ! $pkg_config --version >/dev/null 2>&1; then
1876     warn "$pkg_config not found, library detection may fail."
1877     pkg_config=false
1878 fi
1879
1880 exesuf() {
1881     case $1 in
1882         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1883     esac
1884 }
1885
1886 EXESUF=$(exesuf $target_os)
1887 HOSTEXESUF=$(exesuf $host_os)
1888
1889 # set temporary file name
1890 : ${TMPDIR:=$TEMPDIR}
1891 : ${TMPDIR:=$TMP}
1892 : ${TMPDIR:=/tmp}
1893
1894 if ! check_cmd mktemp -u XXXXXX; then
1895     # simple replacement for missing mktemp
1896     # NOT SAFE FOR GENERAL USE
1897     mktemp(){
1898         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1899     }
1900 fi
1901
1902 tmpfile(){
1903     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1904         (set -C; exec > $tmp) 2>/dev/null ||
1905         die "Unable to create temporary file in $TMPDIR."
1906     append TMPFILES $tmp
1907     eval $1=$tmp
1908 }
1909
1910 trap 'rm -f -- $TMPFILES' EXIT
1911
1912 tmpfile TMPC  .c
1913 tmpfile TMPE  $EXESUF
1914 tmpfile TMPH  .h
1915 tmpfile TMPO  .o
1916 tmpfile TMPS  .S
1917 tmpfile TMPV  .ver
1918 tmpfile TMPSH .sh
1919 tmpfile TMPASM .asm
1920
1921 unset -f mktemp
1922
1923 chmod +x $TMPE
1924
1925 # make sure we can execute files in $TMPDIR
1926 cat > $TMPSH 2>> $logfile <<EOF
1927 #! /bin/sh
1928 EOF
1929 chmod +x $TMPSH >> $logfile 2>&1
1930 if ! $TMPSH >> $logfile 2>&1; then
1931     cat <<EOF
1932 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1933 variable to another directory and make sure that it is not mounted noexec.
1934 EOF
1935     die "Sanity test failed."
1936 fi
1937
1938 filter_cflags=echo
1939 filter_cppflags=echo
1940 filter_asflags=echo
1941
1942 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1943     cc_type=llvm_gcc
1944     cc_version=__VERSION__
1945     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1946     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1947     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1948     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1949     speed_cflags='-O3'
1950     size_cflags='-Os'
1951 elif $cc -v 2>&1 | grep -qi ^gcc; then
1952     cc_type=gcc
1953     cc_version=__VERSION__
1954     gcc_version=$($cc --version | head -n1)
1955     gcc_basever=$($cc -dumpversion)
1956     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1957     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1958     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1959     if ! $cc -dumpversion | grep -q '^2\.'; then
1960         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1961         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1962     fi
1963     speed_cflags='-O3'
1964     size_cflags='-Os'
1965 elif $cc --version 2>/dev/null | grep -q Intel; then
1966     cc_type=icc
1967     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1968     cc_ident=$($cc --version | head -n1)
1969     icc_version=$($cc -dumpversion)
1970     CC_DEPFLAGS='-MMD'
1971     AS_DEPFLAGS='-MMD'
1972     speed_cflags='-O3'
1973     size_cflags='-Os'
1974     noopt_cflags='-O1'
1975 elif $cc -v 2>&1 | grep -q xlc; then
1976     cc_type=xlc
1977     cc_version="AV_STRINGIFY(__IBMC__)"
1978     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1979     speed_cflags='-O5'
1980     size_cflags='-O5 -qcompact'
1981 elif $cc -V 2>/dev/null | grep -q Compaq; then
1982     cc_type=ccc
1983     cc_version="AV_STRINGIFY(__DECC_VER)"
1984     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1985     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1986     debuglevel=3
1987     add_ldflags -Wl,-z,now # calls to libots crash without this
1988     speed_cflags='-fast'
1989     size_cflags='-O1'
1990 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1991     test -d "$sysroot" || die "No valid sysroot specified."
1992     cc_type=armcc
1993     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1994     cc_ident=$($cc --vsn | head -n1)
1995     armcc_conf="$PWD/armcc.conf"
1996     $cc --arm_linux_configure                 \
1997         --arm_linux_config_file="$armcc_conf" \
1998         --configure_sysroot="$sysroot"        \
1999         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2000         die "Error creating armcc configuration file."
2001     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2002     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2003     as_default="${cross_prefix}gcc"
2004     CC_DEPFLAGS='-MMD'
2005     AS_DEPFLAGS='-MMD'
2006     speed_cflags='-O3'
2007     size_cflags='-Os'
2008     filter_asflags="filter_out -W${armcc_opt}*"
2009 elif $cc -version 2>/dev/null | grep -q TMS470; then
2010     cc_type=tms470
2011     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2012     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2013     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2014     CC_O='-fr=$(@D)'
2015     as_default="${cross_prefix}gcc"
2016     ld_default="${cross_prefix}gcc"
2017     TMPO=$(basename $TMPC .c).o
2018     append TMPFILES $TMPO
2019     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2020     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2021     AS_DEPFLAGS='-MMD'
2022     speed_cflags='-O3 -mf=5'
2023     size_cflags='-O3 -mf=2'
2024     filter_cflags=tms470_flags
2025     tms470_flags(){
2026         for flag; do
2027             case $flag in
2028                 -march=*|-mcpu=*)
2029                     case "${flag#*=}" in
2030                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2031                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2032                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2033                         armv6*|arm11*)          echo -mv=6   ;;
2034                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2035                                                 echo -mv=5e  ;;
2036                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2037                     esac
2038                     ;;
2039                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2040                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2041                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2042                 -msoft-float)   echo --float_support=vfplib       ;;
2043                 -O[0-3]|-mf=*)  echo $flag                        ;;
2044                 -g)             echo -g -mn                       ;;
2045                 -pds=*)         echo $flag                        ;;
2046             esac
2047         done
2048     }
2049 elif $cc -v 2>&1 | grep -q clang; then
2050     cc_type=clang
2051     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2052         cc_version=__clang_version__ || cc_version=__VERSION__
2053     cc_ident=$($cc --version | head -n1)
2054     CC_DEPFLAGS='-MMD'
2055     AS_DEPFLAGS='-MMD'
2056     speed_cflags='-O3'
2057     size_cflags='-Os'
2058 elif $cc -V 2>&1 | grep -q Sun; then
2059     cc_type=suncc
2060     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2061     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2062     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2063     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2064     speed_cflags='-O5'
2065     size_cflags='-O5 -xspace'
2066     filter_cflags=suncc_flags
2067     suncc_flags(){
2068         for flag; do
2069             case $flag in
2070                 -march=*|-mcpu=*)
2071                     case "${flag#*=}" in
2072                         native)                   echo -xtarget=native       ;;
2073                         v9|niagara)               echo -xarch=sparc          ;;
2074                         ultrasparc)               echo -xarch=sparcvis       ;;
2075                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2076                         i586|pentium)             echo -xchip=pentium        ;;
2077                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2078                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2079                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2080                         pentium4*)          echo -xtarget=pentium4           ;;
2081                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2082                         *-sse3)             echo -xarch=sse3                 ;;
2083                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2084                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2085                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2086                         k8|opteron|athlon64|athlon-fx)
2087                                                   echo -xarch=sse2a          ;;
2088                         athlon*)                  echo -xarch=pentium_proa   ;;
2089                     esac
2090                     ;;
2091                 -std=c99)             echo -xc99              ;;
2092                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2093                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2094                 -W*,*)                echo $flag              ;;
2095                 -f*-*|-W*)                                    ;;
2096                 *)                    echo $flag              ;;
2097             esac
2098         done
2099     }
2100 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2101     cc_type=pathscale
2102     cc_version=__PATHSCALE__
2103     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2104     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2105     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2106     speed_cflags='-O2'
2107     size_cflags='-Os'
2108     filter_cflags='filter_out -Wdisabled-optimization'
2109 elif $cc -v 2>&1 | grep -q Open64; then
2110     cc_type=open64
2111     cc_version=__OPEN64__
2112     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2113     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2114     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2115     speed_cflags='-O2'
2116     size_cflags='-Os'
2117     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2118 fi
2119
2120 test -n "$cc_type" && enable $cc_type ||
2121     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2122
2123 : ${as_default:=$cc}
2124 : ${dep_cc_default:=$cc}
2125 : ${ld_default:=$cc}
2126 set_default ar as dep_cc ld
2127
2128 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2129 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2130
2131 add_cflags $extra_cflags
2132 add_asflags $extra_cflags
2133
2134 if test -n "$sysroot"; then
2135     case "$cc_type" in
2136         gcc|llvm_gcc|clang)
2137             add_cppflags --sysroot="$sysroot"
2138             add_ldflags --sysroot="$sysroot"
2139         ;;
2140         tms470)
2141             add_cppflags -I"$sysinclude"
2142             add_ldflags  --sysroot="$sysroot"
2143         ;;
2144     esac
2145 fi
2146
2147 if test "$cpu" = host; then
2148     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2149
2150     case "$cc_type" in
2151         gcc|llvm_gcc)
2152             check_native(){
2153                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2154                 sed -n "/$1=/{
2155                             s/.*$1=\\([^ ]*\\).*/\\1/
2156                             p
2157                             q
2158                         }" $TMPE
2159             }
2160             cpu=$(check_native -march || check_native -mcpu)
2161         ;;
2162     esac
2163
2164     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2165 fi
2166
2167 # Deal with common $arch aliases
2168 case "$arch" in
2169     arm*)
2170         arch="arm"
2171     ;;
2172     mips|mipsel|IP*)
2173         arch="mips"
2174     ;;
2175     mips64*)
2176         arch="mips"
2177         subarch="mips64"
2178     ;;
2179     parisc|hppa)
2180         arch="parisc"
2181     ;;
2182     parisc64|hppa64)
2183         arch="parisc"
2184         subarch="parisc64"
2185     ;;
2186     "Power Macintosh"|ppc|powerpc)
2187         arch="ppc"
2188     ;;
2189     ppc64|powerpc64)
2190         arch="ppc"
2191         subarch="ppc64"
2192     ;;
2193     s390|s390x)
2194         arch="s390"
2195     ;;
2196     sh4|sh)
2197         arch="sh4"
2198     ;;
2199     sun4u|sparc64)
2200         arch="sparc"
2201         subarch="sparc64"
2202     ;;
2203     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2204         arch="x86"
2205     ;;
2206 esac
2207
2208 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2209 enable $arch
2210
2211 # Add processor-specific flags
2212 if test "$cpu" = generic; then
2213     : do nothing
2214 elif enabled ppc; then
2215
2216     case $(tolower $cpu) in
2217         601|ppc601|powerpc601)
2218             cpuflags="-mcpu=601"
2219             disable altivec
2220         ;;
2221         603*|ppc603*|powerpc603*)
2222             cpuflags="-mcpu=603"
2223             disable altivec
2224         ;;
2225         604*|ppc604*|powerpc604*)
2226             cpuflags="-mcpu=604"
2227             disable altivec
2228         ;;
2229         g3|75*|ppc75*|powerpc75*)
2230             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2231             disable altivec
2232         ;;
2233         g4|745*|ppc745*|powerpc745*)
2234             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2235         ;;
2236         74*|ppc74*|powerpc74*)
2237             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2238         ;;
2239         g5|970|ppc970|powerpc970|power4*)
2240             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2241         ;;
2242         cell)
2243             cpuflags="-mcpu=cell"
2244             enable ldbrx
2245         ;;
2246         e500v2)
2247             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2248             disable altivec
2249         ;;
2250         e500)
2251             cpuflags="-mcpu=8540 -mhard-float"
2252             disable altivec
2253         ;;
2254     esac
2255
2256 elif enabled x86; then
2257
2258     case $cpu in
2259         i[345]86|pentium)
2260             cpuflags="-march=$cpu"
2261             disable mmx
2262         ;;
2263         # targets that do NOT support conditional mov (cmov)
2264         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2265             cpuflags="-march=$cpu"
2266             disable cmov
2267         ;;
2268         # targets that do support conditional mov (cmov)
2269         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2270             cpuflags="-march=$cpu"
2271             enable cmov
2272             enable fast_cmov
2273         ;;
2274         # targets that do support conditional mov but on which it's slow
2275         pentium4|pentium4m|prescott|nocona)
2276             cpuflags="-march=$cpu"
2277             enable cmov
2278             disable fast_cmov
2279         ;;
2280     esac
2281
2282 elif enabled sparc; then
2283
2284     case $cpu in
2285         niagara)
2286             cpuflags="-mcpu=$cpu"
2287             disable vis
2288         ;;
2289         sparc64)
2290             cpuflags="-mcpu=v9"
2291         ;;
2292     esac
2293
2294 elif enabled arm; then
2295
2296     case $cpu in
2297         armv*)
2298             cpuflags="-march=$cpu"
2299             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2300         ;;
2301         *)
2302             cpuflags="-mcpu=$cpu"
2303             case $cpu in
2304                 cortex-a*)                               subarch=armv7a  ;;
2305                 cortex-r*)                               subarch=armv7r  ;;
2306                 cortex-m*)                               subarch=armv7m  ;;
2307                 arm11*)                                  subarch=armv6   ;;
2308                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2309                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2310             esac
2311         ;;
2312     esac
2313
2314 elif enabled alpha; then
2315
2316     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2317
2318 elif enabled bfin; then
2319
2320     cpuflags="-mcpu=$cpu"
2321
2322 elif enabled mips; then
2323
2324     cpuflags="-march=$cpu"
2325
2326 elif enabled avr32; then
2327
2328     case $cpu in
2329         ap7[02]0[0-2])
2330             subarch="avr32_ap"
2331             cpuflags="-mpart=$cpu"
2332         ;;
2333         ap)
2334             subarch="avr32_ap"
2335             cpuflags="-march=$cpu"
2336         ;;
2337         uc3[ab]*)
2338             subarch="avr32_uc"
2339             cpuflags="-mcpu=$cpu"
2340         ;;
2341         uc)
2342             subarch="avr32_uc"
2343             cpuflags="-march=$cpu"
2344         ;;
2345     esac
2346
2347 fi
2348
2349 add_cflags $cpuflags
2350 add_asflags $cpuflags
2351
2352 # compiler sanity check
2353 check_exec <<EOF
2354 int main(void){ return 0; }
2355 EOF
2356 if test "$?" != 0; then
2357     echo "$cc is unable to create an executable file."
2358     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2359         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2360         echo "Only do this if you know what cross compiling means."
2361     fi
2362     die "C compiler test failed."
2363 fi
2364
2365 add_cppflags -D_ISOC99_SOURCE
2366 check_cflags -std=c99
2367 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2368 #include <stdlib.h>
2369 EOF
2370 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2371 #include <stdlib.h>
2372 EOF
2373
2374 check_host_cflags -std=c99
2375 check_host_cflags -Wall
2376
2377 case "$arch" in
2378     alpha|ia64|mips|parisc|sparc)
2379         spic=$shared
2380     ;;
2381     x86)
2382         subarch="x86_32"
2383         check_cc <<EOF && subarch="x86_64"
2384         int test[(int)sizeof(char*) - 7];
2385 EOF
2386         if test "$subarch" = "x86_64"; then
2387             spic=$shared
2388         fi
2389     ;;
2390 esac
2391
2392 enable $subarch
2393 enabled spic && enable pic
2394
2395 # OS specific
2396 case $target_os in
2397     haiku)
2398         prefix_default="/boot/common"
2399         network_extralibs="-lnetwork"
2400         host_libs=
2401         ;;
2402     sunos)
2403         FFSERVERLDFLAGS=""
2404         SHFLAGS='-shared -Wl,-h,$$(@F)'
2405         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2406         network_extralibs="-lsocket -lnsl"
2407         add_cppflags -D__EXTENSIONS__
2408         nm_opts='-P -g'
2409         ;;
2410     netbsd)
2411         disable symver
2412         oss_indev_extralibs="-lossaudio"
2413         oss_outdev_extralibs="-lossaudio"
2414         ;;
2415     openbsd)
2416         enable malloc_aligned
2417         # On OpenBSD 4.5. the compiler does not use PIC unless
2418         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2419         # however the generated executable will not do anything
2420         # (simply quits with exit-code 1, no crash, no output).
2421         # Thus explicitly enable PIC here.
2422         enable pic
2423         disable symver
2424         SHFLAGS='-shared'
2425         oss_indev_extralibs="-lossaudio"
2426         oss_outdev_extralibs="-lossaudio"
2427         ;;
2428     dragonfly)
2429         enable malloc_aligned
2430         disable symver
2431         ;;
2432     freebsd)
2433         enable malloc_aligned
2434         ;;
2435     bsd/os)
2436         add_extralibs -lpoll -lgnugetopt
2437         strip="strip -d"
2438         ;;
2439     darwin)
2440         enable malloc_aligned
2441         gas="gas-preprocessor.pl $cc"
2442         enabled ppc && add_asflags -force_cpusubtype_ALL
2443         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2444         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2445         strip="${strip} -x"
2446         add_ldflags -Wl,-dynamic,-search_paths_first
2447         SLIBSUF=".dylib"
2448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2450         FFSERVERLDFLAGS=-Wl,-bind_at_load
2451         objformat="macho"
2452         enabled x86_64 && objformat="macho64"
2453         enabled_any pic shared ||
2454             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2455         ;;
2456     mingw32*)
2457         if test $target_os = "mingw32ce"; then
2458             disable network
2459         else
2460             target_os=mingw32
2461         fi
2462         LIBTARGET=i386
2463         if enabled x86_64; then
2464             enable malloc_aligned
2465             LIBTARGET=x64
2466         elif enabled arm; then
2467             LIBTARGET=arm-wince
2468         fi
2469         shlibdir_default="$bindir_default"
2470         SLIBPREF=""
2471         SLIBSUF=".dll"
2472         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2473         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2474         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2475         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2476             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2477             install -d "$(LIBDIR)"; \
2478             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2479         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2480         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'
2481         objformat="win32"
2482         enable dos_paths
2483         check_cflags -fno-common
2484         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2485                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2486                 die "ERROR: MinGW runtime version must be >= 3.15."
2487         add_cppflags -U__STRICT_ANSI__
2488         ;;
2489     cygwin*)
2490         target_os=cygwin
2491         shlibdir_default="$bindir_default"
2492         SLIBPREF="cyg"
2493         SLIBSUF=".dll"
2494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2496         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2497         objformat="win32"
2498         enable dos_paths
2499         check_cflags -fno-common
2500         add_cppflags -U__STRICT_ANSI__
2501         ;;
2502     *-dos|freedos|opendos)
2503         network_extralibs="-lsocket"
2504         objformat="coff"
2505         enable dos_paths
2506         add_cppflags -U__STRICT_ANSI__
2507         ;;
2508     linux)
2509         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2510         enable dv1394
2511         ;;
2512     irix*)
2513         target_os=irix
2514         ranlib="echo ignoring ranlib"
2515         ;;
2516     os/2*)
2517         strip="lxlite -CS"
2518         ln_s="cp -f"
2519         objformat="aout"
2520         add_cppflags -D_GNU_SOURCE
2521         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2522         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2523         FFSERVERLDFLAGS=""
2524         LIBSUF="_s.a"
2525         SLIBPREF=""
2526         SLIBSUF=".dll"
2527         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2528         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2529         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2530           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2531           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2532           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2533           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2534           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2535         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2536           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2537         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2538         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2539         enable dos_paths
2540         ;;
2541     gnu/kfreebsd)
2542         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2543         ;;
2544     gnu)
2545         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2546         ;;
2547     qnx)
2548         add_cppflags -D_QNX_SOURCE
2549         network_extralibs="-lsocket"
2550         ;;
2551     symbian)
2552         SLIBSUF=".dll"
2553         enable dos_paths
2554         add_cflags --include=$sysinclude/gcce/gcce.h
2555         ;;
2556     none)
2557         ;;
2558     *)
2559         die "Unknown OS '$target_os'."
2560         ;;
2561 esac
2562
2563 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2564
2565 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2566
2567 set_default $PATHS_LIST
2568
2569 # we need to build at least one lib type
2570 if ! enabled_any static shared; then
2571     cat <<EOF
2572 At least one library type must be built.
2573 Specify --enable-static to build the static libraries or --enable-shared to
2574 build the shared libraries as well. To only build the shared libraries specify
2575 --disable-static in addition to --enable-shared.
2576 EOF
2577     exit 1;
2578 fi
2579
2580 disabled static && LIBNAME=""
2581
2582 die_license_disabled() {
2583     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2584 }
2585
2586 die_license_disabled gpl libx264
2587 die_license_disabled gpl libxavs
2588 die_license_disabled gpl libxvid
2589 die_license_disabled gpl x11grab
2590
2591 die_license_disabled nonfree libaacplus
2592 die_license_disabled nonfree libfaac
2593
2594 die_license_disabled version3 libopencore_amrnb
2595 die_license_disabled version3 libopencore_amrwb
2596 die_license_disabled version3 libvo_aacenc
2597 die_license_disabled version3 libvo_amrwbenc
2598
2599 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2600
2601 disabled optimizations || check_cflags -fomit-frame-pointer
2602
2603 enable_pic() {
2604     enable pic
2605     add_cppflags -DPIC
2606     add_cflags   -fPIC
2607     add_asflags  -fPIC
2608 }
2609
2610 enabled pic && enable_pic
2611
2612 check_cc <<EOF || die "Symbol mangling check failed."
2613 int ff_extern;
2614 EOF
2615 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2616 extern_prefix=${sym%%ff_extern*}
2617
2618 check_cc <<EOF && enable inline_asm
2619 void foo(void) { __asm__ volatile ("" ::); }
2620 EOF
2621
2622 _restrict=
2623 for restrict_keyword in restrict __restrict__ __restrict; do
2624     check_cc <<EOF && _restrict=$restrict_keyword && break
2625 void foo(char * $restrict_keyword p);
2626 EOF
2627 done
2628
2629 check_cc <<EOF && enable attribute_packed
2630 struct { int x; } __attribute__((packed)) x;
2631 EOF
2632
2633 check_cc <<EOF && enable attribute_may_alias
2634 union { int x; } __attribute__((may_alias)) x;
2635 EOF
2636
2637 check_cc <<EOF || die "endian test failed"
2638 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2639 EOF
2640 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2641
2642 if enabled alpha; then
2643
2644     check_cflags -mieee
2645
2646 elif enabled arm; then
2647
2648     check_cflags -marm
2649     nogas=die
2650
2651     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2652         enable vfp_args
2653     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2654         case "${cross_prefix:-$cc}" in
2655             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2656             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2657 __asm__ (".eabi_attribute 28, 1");
2658 int main(void) { return 0; }
2659 EOF
2660         esac
2661         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2662     fi
2663
2664     # We have to check if pld is a nop and disable it.
2665     check_asm pld '"pld [r0]"'
2666
2667     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2668     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2669     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2670     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2671     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2672     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2673     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2674
2675     enabled_all armv6t2 shared !pic && enable_pic
2676
2677 elif enabled mips; then
2678
2679     check_asm loongson '"dmult.g $1, $2, $3"'
2680     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2681
2682 elif enabled ppc; then
2683
2684     enable local_aligned_8 local_aligned_16
2685
2686     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2687     check_asm ibm_asm   '"add 0, 0, 0"'
2688     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2689     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2690
2691     # AltiVec flags: The FSF version of GCC differs from the Apple version
2692     if enabled altivec; then
2693         nogas=warn
2694         check_cflags -maltivec -mabi=altivec &&
2695         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2696         check_cflags -faltivec
2697
2698         # check if our compiler supports Motorola AltiVec C API
2699         check_cc <<EOF || disable altivec
2700 $inc_altivec_h
2701 int main(void) {
2702     vector signed int v1, v2, v3;
2703     v1 = vec_add(v2,v3);
2704     return 0;
2705 }
2706 EOF
2707
2708         # check if our compiler supports braces for vector declarations
2709         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2710 $inc_altivec_h
2711 int main (void) { (vector int) {1}; return 0; }
2712 EOF
2713     fi
2714
2715 elif enabled sparc; then
2716
2717     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2718         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2719
2720 elif enabled x86; then
2721
2722     enable local_aligned_8 local_aligned_16
2723
2724     # check whether EBP is available on x86
2725     # As 'i' is stored on the stack, this program will crash
2726     # if the base pointer is used to access it because the
2727     # base pointer is cleared in the inline assembly code.
2728     check_exec_crash <<EOF && enable ebp_available
2729     volatile int i=0;
2730     __asm__ volatile (
2731         "xorl %%ebp, %%ebp"
2732     ::: "%ebp");
2733     return i;
2734 EOF
2735
2736     # check whether EBX is available on x86
2737     check_asm ebx_available '""::"b"(0)' &&
2738         check_asm ebx_available '"":::"%ebx"'
2739
2740     # check whether xmm clobbers are supported
2741     check_asm xmm_clobbers '"":::"%xmm0"'
2742
2743     # check whether more than 10 operands are supported
2744     check_cc <<EOF && enable ten_operands
2745 int main(void) {
2746     int x=0;
2747     __asm__ volatile(
2748         ""
2749         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2750     );
2751     return 0;
2752 }
2753 EOF
2754
2755     # check whether binutils is new enough to compile SSSE3/MMX2
2756     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2757     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2758
2759     check_asm bswap '"bswap %%eax" ::: "%eax"'
2760
2761     if ! disabled_any asm mmx yasm; then
2762         if check_cmd $yasmexe --version; then
2763             enabled x86_64 && yasm_extra="-m amd64"
2764             yasm_debug="-g dwarf2"
2765         elif check_cmd nasm -v; then
2766             yasmexe=nasm
2767             yasm_debug="-g -F dwarf"
2768             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2769         fi
2770
2771         YASMFLAGS="-f $objformat $yasm_extra"
2772         enabled pic               && append YASMFLAGS "-DPIC"
2773         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2774         case "$objformat" in
2775             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2776         esac
2777
2778         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2779             die "yasm not found, use --disable-yasm for a crippled build"
2780         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2781     fi
2782
2783     case "$cpu" in
2784         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2785             disable fast_clz
2786         ;;
2787     esac
2788
2789 fi
2790
2791 if enabled asm; then
2792     as=${gas:=$as}
2793     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2794         $nogas "GNU assembler not found, install gas-preprocessor"
2795 fi
2796
2797 check_ldflags -Wl,--as-needed
2798
2799 if check_func dlopen; then
2800     ldl=
2801 elif check_func dlopen -ldl; then
2802     ldl=-ldl
2803 fi
2804
2805 if enabled network; then
2806     check_type "sys/types.h sys/socket.h" socklen_t
2807     check_type netdb.h "struct addrinfo"
2808     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2809     check_type netinet/in.h "struct sockaddr_in6"
2810     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2811     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2812     # Prefer arpa/inet.h over winsock2
2813     if check_header arpa/inet.h ; then
2814         check_func closesocket
2815     elif check_header winsock2.h ; then
2816         check_func_headers winsock2.h closesocket -lws2 && \
2817             network_extralibs="-lws2" || \
2818         { check_func_headers winsock2.h closesocket -lws2_32 && \
2819             network_extralibs="-lws2_32"; }
2820         check_type ws2tcpip.h socklen_t
2821         check_type ws2tcpip.h "struct addrinfo"
2822         check_type ws2tcpip.h "struct ipv6_mreq"
2823         check_type ws2tcpip.h "struct sockaddr_in6"
2824         check_type ws2tcpip.h "struct sockaddr_storage"
2825         check_struct winsock2.h "struct sockaddr" sa_len
2826     else
2827         disable network
2828     fi
2829 fi
2830
2831 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2832 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2833
2834 check_func  fcntl
2835 check_func  fork
2836 check_func  getaddrinfo $network_extralibs
2837 check_func  gethrtime
2838 check_func  getrusage
2839 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2840 check_func  inet_aton $network_extralibs
2841 check_func  isatty
2842 check_func  localtime_r
2843 check_func  ${malloc_prefix}memalign            && enable memalign
2844 check_func  mkstemp
2845 check_func  mmap
2846 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2847 check_func  setrlimit
2848 check_func  strerror_r
2849 check_func  strtok_r
2850 check_func_headers conio.h kbhit
2851 check_func_headers io.h setmode
2852 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2853 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2854 check_func_headers windows.h GetProcessTimes
2855 check_func_headers windows.h MapViewOfFile
2856 check_func_headers windows.h VirtualAlloc
2857
2858 check_header dlfcn.h
2859 check_header dxva2api.h
2860 check_header libcrystalhd/libcrystalhd_if.h
2861 check_header malloc.h
2862 check_header poll.h
2863 check_header sys/mman.h
2864 check_header sys/resource.h
2865 check_header sys/select.h
2866 check_header termios.h
2867 check_header vdpau/vdpau.h
2868 check_header vdpau/vdpau_x11.h
2869 check_header X11/extensions/XvMClib.h
2870
2871 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2872
2873 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2874 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2875
2876 # check for some common methods of building with pthread support
2877 # do this before the optional library checks as some of them require pthreads
2878 if ! disabled pthreads && ! enabled w32threads; then
2879     enable pthreads
2880     if check_func pthread_create; then
2881         :
2882     elif check_func pthread_create -pthread; then
2883         add_cflags -pthread
2884         add_extralibs -pthread
2885     elif check_func pthread_create -pthreads; then
2886         add_cflags -pthreads
2887         add_extralibs -pthreads
2888     elif check_func pthread_create -lpthreadGC2; then
2889         add_extralibs -lpthreadGC2
2890     elif ! check_lib pthread.h pthread_create -lpthread; then
2891         disable pthreads
2892     fi
2893 fi
2894
2895 for thread in $THREADS_LIST; do
2896     if enabled $thread; then
2897         test -n "$thread_type" &&
2898             die "ERROR: Only one thread type must be selected." ||
2899             thread_type="$thread"
2900     fi
2901 done
2902
2903 check_lib math.h sin -lm && LIBM="-lm"
2904 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2905 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2906
2907 check_mathfunc exp2
2908 check_mathfunc exp2f
2909 check_mathfunc llrint
2910 check_mathfunc llrintf
2911 check_mathfunc log2
2912 check_mathfunc log2f
2913 check_mathfunc lrint
2914 check_mathfunc lrintf
2915 check_mathfunc round
2916 check_mathfunc roundf
2917 check_mathfunc trunc
2918 check_mathfunc truncf
2919
2920 # these are off by default, so fail if requested and not available
2921 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2922 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2923 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2924 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
2925 enabled libdc1394  && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
2926 enabled libdirac   && require_pkg_config dirac                          \
2927     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2928     "dirac_decoder_init dirac_encoder_init"
2929 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2930 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2931 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2932 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2933 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2934 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2935 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2936 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
2937 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2938 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2939 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2940 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2941 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2942 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2943 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2944 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2945 enabled libvpx     && {
2946     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2947                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2948     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2949                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2950 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2951                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2952                         die "ERROR: libx264 version must be >= 0.115."; }
2953 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2954 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2955 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2956
2957 SDL_CONFIG="${cross_prefix}sdl-config"
2958 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2959     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2960     enable sdl &&
2961     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2962 else
2963   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2964     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2965     sdl_libs=$("${SDL_CONFIG}" --libs)
2966     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
2967     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2968     enable sdl &&
2969     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2970   fi
2971 fi
2972 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
2973
2974 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2975
2976 check_header linux/fb.h
2977 check_header linux/videodev.h
2978 check_header linux/videodev2.h
2979 check_header sys/videoio.h
2980
2981 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2982 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2983 # w32api 3.12 had it defined wrong
2984 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2985
2986 check_type "dshow.h" IBaseFilter
2987
2988 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2989 { check_header dev/bktr/ioctl_meteor.h &&
2990   check_header dev/bktr/ioctl_bt848.h; } ||
2991 { check_header machine/ioctl_meteor.h &&
2992   check_header machine/ioctl_bt848.h; } ||
2993 { check_header dev/video/meteor/ioctl_meteor.h &&
2994   check_header dev/video/bktr/ioctl_bt848.h; } ||
2995 check_header dev/ic/bt8xx.h
2996
2997 check_header sndio.h
2998 if check_struct sys/soundcard.h audio_buf_info bytes; then
2999     enable_safe sys/soundcard.h
3000 else
3001     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3002     #include <sys/soundcard.h>
3003     audio_buf_info abc;
3004 EOF
3005 fi
3006 check_header soundcard.h
3007
3008 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3009
3010 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
3011
3012 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3013
3014 enabled x11grab                         &&
3015 check_header X11/Xlib.h                 &&
3016 check_header X11/extensions/XShm.h      &&
3017 check_header X11/extensions/Xfixes.h    &&
3018 check_func XOpenDisplay -lX11           &&
3019 check_func XShmCreateImage -lX11 -lXext &&
3020 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3021
3022 if ! disabled vaapi; then
3023     check_lib va/va.h vaInitialize -lva && {
3024         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3025         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3026     } || disable vaapi
3027 fi
3028
3029 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3030 check_cpp_condition \
3031     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3032     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3033       disable vdpau; }
3034 fi
3035
3036 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3037
3038 # add some useful compiler flags if supported
3039 check_cflags -Wdeclaration-after-statement
3040 check_cflags -Wall
3041 check_cflags -Wno-parentheses
3042 check_cflags -Wno-switch
3043 check_cflags -Wdisabled-optimization
3044 check_cflags -Wpointer-arith
3045 check_cflags -Wredundant-decls
3046 check_cflags -Wno-pointer-sign
3047 check_cflags -Wcast-qual
3048 check_cflags -Wwrite-strings
3049 check_cflags -Wtype-limits
3050 check_cflags -Wundef
3051 check_cflags -Wmissing-prototypes
3052 check_cflags -Wno-pointer-to-int-cast
3053 enabled extra_warnings && check_cflags -Winline
3054
3055 # add some linker flags
3056 check_ldflags -Wl,--warn-common
3057 check_ldflags -Wl,-rpath-link,libpostproc -Wl,-rpath-link,libswscale -Wl,-rpath-link,libavfilter -Wl,-rpath-link,libavdevice -Wl,-rpath-link,libavformat -Wl,-rpath-link,libavcodec -Wl,-rpath-link,libavutil
3058 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3059
3060 echo "X{};" > $TMPV
3061 if test_ldflags -Wl,--version-script,$TMPV; then
3062     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3063     check_cc <<EOF && enable symver_asm_label
3064 void ff_foo(void) __asm__ ("av_foo@VERSION");
3065 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3066 EOF
3067     check_cc <<EOF && enable symver_gnu_asm
3068 __asm__(".symver ff_foo,av_foo@VERSION");
3069 void ff_foo(void) {}
3070 EOF
3071 fi
3072
3073 if enabled small; then
3074     add_cflags $size_cflags
3075 elif enabled optimizations; then
3076     add_cflags $speed_cflags
3077 else
3078     add_cflags $noopt_cflags
3079 fi
3080 check_cflags -fno-math-errno
3081 check_cflags -fno-signed-zeros
3082 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
3083 int x;
3084 EOF
3085
3086
3087 if enabled icc; then
3088     # Just warnings, no remarks
3089     check_cflags -w1
3090     # -wd: Disable following warnings
3091     # 144, 167, 556: -Wno-pointer-sign
3092     # 1292: attribute "foo" ignored
3093     # 10006: ignoring unknown option -fno-signed-zeros
3094     # 10148: ignoring unknown option -Wno-parentheses
3095     # 10156: ignoring option '-W'; no argument required
3096     check_cflags -wd144,167,556,1292,10006,10148,10156
3097     # 11030: Warning unknown option --as-needed
3098     # 10156: ignoring option '-export'; no argument required
3099     check_ldflags -wd10156,11030
3100     # Allow to compile with optimizations
3101     check_ldflags -march=$cpu
3102     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3103     enable ebp_available
3104     if enabled x86_32; then
3105         test ${icc_version%%.*} -ge 11 && \
3106             check_cflags -falign-stack=maintain-16-byte || \
3107             disable aligned_stack
3108     fi
3109 elif enabled ccc; then
3110     # disable some annoying warnings
3111     add_cflags -msg_disable cvtu32to64
3112     add_cflags -msg_disable embedcomment
3113     add_cflags -msg_disable needconstext
3114     add_cflags -msg_disable nomainieee
3115     add_cflags -msg_disable ptrmismatch1
3116     add_cflags -msg_disable unreachcode
3117 elif enabled gcc; then
3118     check_cflags -fno-tree-vectorize
3119     check_cflags -Werror=implicit-function-declaration
3120     check_cflags -Werror=missing-prototypes
3121 elif enabled llvm_gcc; then
3122     check_cflags -mllvm -stack-alignment=16
3123 elif enabled clang; then
3124     check_cflags -mllvm -stack-alignment=16
3125     check_cflags -Qunused-arguments
3126 elif enabled armcc; then
3127     # 2523: use of inline assembler is deprecated
3128     add_cflags -W${armcc_opt},--diag_suppress=2523
3129     add_cflags -W${armcc_opt},--diag_suppress=1207
3130     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3131     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3132     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3133     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3134 elif enabled tms470; then
3135     add_cflags -pds=824 -pds=837
3136 elif enabled pathscale; then
3137     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3138 fi
3139
3140 enabled_any $THREADS_LIST      && enable threads
3141
3142 check_deps $CONFIG_LIST       \
3143            $CONFIG_EXTRA      \
3144            $HAVE_LIST         \
3145            $DECODER_LIST      \
3146            $ENCODER_LIST      \
3147            $HWACCEL_LIST      \
3148            $PARSER_LIST       \
3149            $BSF_LIST          \
3150            $DEMUXER_LIST      \
3151            $MUXER_LIST        \
3152            $FILTER_LIST       \
3153            $INDEV_LIST        \
3154            $OUTDEV_LIST       \
3155            $PROTOCOL_LIST     \
3156            $ACODEC_TESTS      \
3157            $VCODEC_TESTS      \
3158            $LAVF_TESTS        \
3159            $LAVFI_TESTS       \
3160            $SEEK_TESTS        \
3161
3162 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3163
3164 if test $target_os == "haiku"; then
3165     disable memalign
3166     disable posix_memalign
3167 fi
3168
3169 ! enabled_any memalign posix_memalign malloc_aligned &&
3170     enabled_any $need_memalign && enable memalign_hack
3171
3172 echo "install prefix            $prefix"
3173 echo "source path               $source_path"
3174 echo "C compiler                $cc"
3175 echo "ARCH                      $arch ($cpu)"
3176 if test "$build_suffix" != ""; then
3177     echo "build suffix              $build_suffix"
3178 fi
3179 if test "$extra_version" != ""; then
3180     echo "version string suffix     $extra_version"
3181 fi
3182 echo "big-endian                ${bigendian-no}"
3183 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3184 if enabled x86; then
3185     echo "${yasmexe}                      ${yasm-no}"
3186     echo "MMX enabled               ${mmx-no}"
3187     echo "MMX2 enabled              ${mmx2-no}"
3188     echo "3DNow! enabled            ${amd3dnow-no}"
3189     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3190     echo "SSE enabled               ${sse-no}"
3191     echo "SSSE3 enabled             ${ssse3-no}"
3192     echo "AVX enabled               ${avx-no}"
3193     echo "CMOV enabled              ${cmov-no}"
3194     echo "CMOV is fast              ${fast_cmov-no}"
3195     echo "EBX available             ${ebx_available-no}"
3196     echo "EBP available             ${ebp_available-no}"
3197     echo "10 operands supported     ${ten_operands-no}"
3198 fi
3199 if enabled arm; then
3200     echo "ARMv5TE enabled           ${armv5te-no}"
3201     echo "ARMv6 enabled             ${armv6-no}"
3202     echo "ARMv6T2 enabled           ${armv6t2-no}"
3203     echo "ARM VFP enabled           ${armvfp-no}"
3204     echo "IWMMXT enabled            ${iwmmxt-no}"
3205     echo "NEON enabled              ${neon-no}"
3206 fi
3207 if enabled mips; then
3208     echo "MMI enabled               ${mmi-no}"
3209 fi
3210 if enabled ppc; then
3211     echo "AltiVec enabled           ${altivec-no}"
3212     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3213     echo "dcbzl available           ${dcbzl-no}"
3214 fi
3215 if enabled sparc; then
3216     echo "VIS enabled               ${vis-no}"
3217 fi
3218 echo "debug symbols             ${debug-no}"
3219 echo "strip symbols             ${stripping-no}"
3220 echo "optimize for size         ${small-no}"
3221 echo "optimizations             ${optimizations-no}"
3222 echo "static                    ${static-no}"
3223 echo "shared                    ${shared-no}"
3224 echo "postprocessing support    ${postproc-no}"
3225 echo "new filter support        ${avfilter-no}"
3226 echo "network support           ${network-no}"
3227 echo "threading support         ${thread_type-no}"
3228 echo "SDL support               ${sdl-no}"
3229 echo "Sun medialib support      ${mlib-no}"
3230 echo "AVISynth enabled          ${avisynth-no}"
3231 echo "libcelt enabled           ${libcelt-no}"
3232 echo "frei0r enabled            ${frei0r-no}"
3233 echo "libdc1394 support         ${libdc1394-no}"
3234 echo "libdirac enabled          ${libdirac-no}"
3235 echo "libfaac enabled           ${libfaac-no}"
3236 echo "libaacplus enabled        ${libaacplus-no}"
3237 echo "libgsm enabled            ${libgsm-no}"
3238 echo "libmp3lame enabled        ${libmp3lame-no}"
3239 echo "libnut enabled            ${libnut-no}"
3240 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3241 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3242 echo "libopencv support         ${libopencv-no}"
3243 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3244 echo "librtmp enabled           ${librtmp-no}"
3245 echo "libschroedinger enabled   ${libschroedinger-no}"
3246 echo "libspeex enabled          ${libspeex-no}"
3247 echo "libtheora enabled         ${libtheora-no}"
3248 echo "libva enabled             ${vaapi-no}"
3249 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3250 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3251 echo "libvorbis enabled         ${libvorbis-no}"
3252 echo "libvpx enabled            ${libvpx-no}"
3253 echo "libx264 enabled           ${libx264-no}"
3254 echo "libxavs enabled           ${libxavs-no}"
3255 echo "libxvid enabled           ${libxvid-no}"
3256 echo "zlib enabled              ${zlib-no}"
3257 echo "bzlib enabled             ${bzlib-no}"
3258 echo
3259
3260 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3261     echo "Enabled ${type}s:"
3262     eval list=\$$(toupper $type)_LIST
3263     print_enabled '_*' $list | sort | pr -r -3 -t
3264     echo
3265 done
3266
3267 license="LGPL version 2.1 or later"
3268 if enabled nonfree; then
3269     license="nonfree and unredistributable"
3270 elif enabled gplv3; then
3271     license="GPL version 3 or later"
3272 elif enabled lgplv3; then
3273     license="LGPL version 3 or later"
3274 elif enabled gpl; then
3275     license="GPL version 2 or later"
3276 fi
3277
3278 echo "License: $license"
3279
3280 echo "Creating config.mak and config.h..."
3281
3282 # build tree in object directory if source path is different from current one
3283 if enabled source_path_used; then
3284     DIRS="
3285         doc
3286         libavcodec
3287         libavcodec/$arch
3288         libavcodec/mlib
3289         libavdevice
3290         libavfilter
3291         libavfilter/$arch
3292         libavfilter/libmpcodecs
3293         libavfilter/libmpcodecs/libvo
3294         libavformat
3295         libavutil
3296         libavutil/$arch
3297         libpostproc
3298         libswscale
3299         libswscale/$arch
3300         libswscale/mlib
3301         tests
3302         tools
3303     "
3304     FILES="
3305         Makefile
3306         common.mak
3307         subdir.mak
3308         doc/texi2pod.pl
3309         libavcodec/Makefile
3310         libavcodec/${arch}/Makefile
3311         libavdevice/Makefile
3312         libavfilter/Makefile
3313         libavfilter/${arch}/Makefile
3314         libavformat/Makefile
3315         libavutil/Makefile
3316         libpostproc/Makefile
3317         libswscale/Makefile
3318     "
3319     map 'mkdir -p $v' $DIRS;
3320     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3321 fi
3322
3323 enabled stripping || strip="echo skipping strip"
3324
3325 config_files="$TMPH config.mak"
3326
3327 cat > config.mak <<EOF
3328 # Automatically generated by configure - do not modify!
3329 ifndef FFMPEG_CONFIG_MAK
3330 FFMPEG_CONFIG_MAK=1
3331 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3332 prefix=$prefix
3333 LIBDIR=\$(DESTDIR)$libdir
3334 SHLIBDIR=\$(DESTDIR)$shlibdir
3335 INCDIR=\$(DESTDIR)$incdir
3336 BINDIR=\$(DESTDIR)$bindir
3337 DATADIR=\$(DESTDIR)$datadir
3338 MANDIR=\$(DESTDIR)$mandir
3339 SRC_PATH="$source_path"
3340 SRC_PATH_BARE=$source_path
3341 CC_IDENT=$cc_ident
3342 ARCH=$arch
3343 CC=$cc
3344 AS=$as
3345 LD=$ld
3346 DEPCC=$dep_cc
3347 YASM=$yasmexe
3348 YASMDEP=$yasmexe
3349 AR=$ar
3350 RANLIB=$ranlib
3351 CP=cp -p
3352 LN_S=$ln_s
3353 STRIP=$strip
3354 CPPFLAGS=$CPPFLAGS
3355 CFLAGS=$CFLAGS
3356 ASFLAGS=$ASFLAGS
3357 CC_O=$CC_O
3358 LDFLAGS=$LDFLAGS
3359 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3360 SHFLAGS=$SHFLAGS
3361 YASMFLAGS=$YASMFLAGS
3362 BUILDSUF=$build_suffix
3363 FULLNAME=$FULLNAME
3364 LIBPREF=$LIBPREF
3365 LIBSUF=$LIBSUF
3366 LIBNAME=$LIBNAME
3367 SLIBPREF=$SLIBPREF
3368 SLIBSUF=$SLIBSUF
3369 EXESUF=$EXESUF
3370 EXTRA_VERSION=$extra_version
3371 DEPFLAGS=$DEPFLAGS
3372 CCDEP=$CCDEP
3373 ASDEP=$ASDEP
3374 CC_DEPFLAGS=$CC_DEPFLAGS
3375 AS_DEPFLAGS=$AS_DEPFLAGS
3376 HOSTCC=$host_cc
3377 HOSTCFLAGS=$host_cflags
3378 HOSTEXESUF=$HOSTEXESUF
3379 HOSTLDFLAGS=$host_ldflags
3380 HOSTLIBS=$host_libs
3381 TARGET_EXEC=$target_exec
3382 TARGET_PATH=$target_path
3383 SDL_LIBS=$sdl_libs
3384 SDL_CFLAGS=$sdl_cflags
3385 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3386 EXTRALIBS=$extralibs
3387 INSTALL=$install
3388 LIBTARGET=${LIBTARGET}
3389 SLIBNAME=${SLIBNAME}
3390 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3391 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3392 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3393 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3394 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3395 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3396 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3397 NOREDZONE_FLAGS=$noredzone_flags
3398 EOF
3399
3400 get_version(){
3401     name=$1
3402     file=$source_path/$2
3403     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3404     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3405     lcname=$(tolower $name)
3406     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3407     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3408 }
3409
3410 get_version LIBSWSCALE  libswscale/swscale.h
3411 get_version LIBPOSTPROC libpostproc/postprocess.h
3412 get_version LIBAVCODEC  libavcodec/version.h
3413 get_version LIBAVDEVICE libavdevice/avdevice.h
3414 get_version LIBAVFORMAT libavformat/version.h
3415 get_version LIBAVUTIL   libavutil/avutil.h
3416 get_version LIBAVFILTER libavfilter/avfilter.h
3417
3418 cat > $TMPH <<EOF
3419 /* Automatically generated by configure - do not modify! */
3420 #ifndef FFMPEG_CONFIG_H
3421 #define FFMPEG_CONFIG_H
3422 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3423 #define FFMPEG_LICENSE "$(c_escape $license)"
3424 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3425 #define CC_TYPE "$cc_type"
3426 #define CC_VERSION $cc_version
3427 #define restrict $_restrict
3428 #define EXTERN_PREFIX "${extern_prefix}"
3429 #define EXTERN_ASM ${extern_prefix}
3430 #define SLIBSUF "$SLIBSUF"
3431 EOF
3432
3433 test -n "$malloc_prefix" &&
3434     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3435
3436 if enabled small || disabled optimizations; then
3437     echo "#undef  av_always_inline"  >> $TMPH
3438     if enabled small; then
3439         echo "#define av_always_inline inline"  >> $TMPH
3440     else
3441         echo "#define av_always_inline av_unused"  >> $TMPH
3442     fi
3443 fi
3444
3445 if enabled yasm; then
3446     append config_files $TMPASM
3447     printf '' >$TMPASM
3448 fi
3449
3450 print_config ARCH_   "$config_files" $ARCH_LIST
3451 print_config HAVE_   "$config_files" $HAVE_LIST
3452 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3453                                      $CONFIG_EXTRA      \
3454                                      $DECODER_LIST      \
3455                                      $ENCODER_LIST      \
3456                                      $HWACCEL_LIST      \
3457                                      $PARSER_LIST       \
3458                                      $BSF_LIST          \
3459                                      $DEMUXER_LIST      \
3460                                      $MUXER_LIST        \
3461                                      $FILTER_LIST       \
3462                                      $PROTOCOL_LIST     \
3463                                      $INDEV_LIST        \
3464                                      $OUTDEV_LIST       \
3465
3466 cat >>config.mak <<EOF
3467 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3468 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3469 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3470 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3471 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3472 EOF
3473
3474 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3475 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3476
3477 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3478 cp_if_changed $TMPH config.h
3479 touch .config
3480
3481 enabled yasm && cp_if_changed $TMPASM config.asm
3482
3483 cat > $TMPH <<EOF
3484 /* Generated by ffconf */
3485 #ifndef AVUTIL_AVCONFIG_H
3486 #define AVUTIL_AVCONFIG_H
3487 EOF
3488
3489 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3490
3491 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3492
3493 cp_if_changed $TMPH libavutil/avconfig.h
3494
3495 test -n "$WARNINGS" && printf "\n$WARNINGS"
3496
3497 # build pkg-config files
3498
3499 pkgconfig_generate(){
3500 name=$1
3501 shortname=${name#lib}${build_suffix}
3502 comment=$2
3503 version=$3
3504 libs=$4
3505 requires=$5
3506 enabled ${name#lib} || return 0
3507 cat <<EOF > $name/$name.pc
3508 prefix=$prefix
3509 exec_prefix=\${prefix}
3510 libdir=$libdir
3511 includedir=$incdir
3512
3513 Name: $name
3514 Description: $comment
3515 Version: $version
3516 Requires: $(enabled shared || echo $requires)
3517 Requires.private: $(enabled shared && echo $requires)
3518 Conflicts:
3519 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3520 Libs.private: $(enabled shared && echo $libs)
3521 Cflags: -I\${includedir}
3522 EOF
3523 cat <<EOF > $name/$name-uninstalled.pc
3524 prefix=
3525 exec_prefix=
3526 libdir=\${pcfiledir}
3527 includedir=${source_path}
3528
3529 Name: $name
3530 Description: $comment
3531 Version: $version
3532 Requires: $requires
3533 Conflicts:
3534 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3535 Cflags: -I\${includedir}
3536 EOF
3537 }
3538
3539 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3540 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3541 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3542 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3543 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3544 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3545 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"