88d1622c0b9b6a8b6fdbc6026ff2f57cdce03fb6
[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   --enable-postproc        enable GPLed postprocessing support [no]
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   --disable-mpegaudio-hp   faster (but less accurate) MPEG audio decoding [no]
98   --enable-gray            enable full grayscale support (slower color)
99   --disable-swscale-alpha  disable alpha channel support in swscale
100   --disable-fastdiv        disable table-based division
101   --enable-small           optimize for size instead of speed
102   --disable-aandct         disable AAN DCT code
103   --disable-dct            disable DCT code
104   --disable-fft            disable FFT code
105   --disable-golomb         disable Golomb code
106   --disable-huffman        disable Huffman code
107   --disable-lpc            disable LPC code
108   --disable-mdct           disable MDCT code
109   --disable-rdft           disable RDFT code
110   --disable-vaapi          disable VAAPI code
111   --disable-vdpau          disable VDPAU code
112   --disable-dxva2          disable DXVA2 code
113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
115   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
116   --disable-everything     disable all components listed below
117   --disable-encoder=NAME   disable encoder NAME
118   --enable-encoder=NAME    enable encoder NAME
119   --disable-encoders       disable all encoders
120   --disable-decoder=NAME   disable decoder NAME
121   --enable-decoder=NAME    enable decoder NAME
122   --disable-decoders       disable all decoders
123   --disable-hwaccel=NAME   disable hwaccel NAME
124   --enable-hwaccel=NAME    enable hwaccel NAME
125   --disable-hwaccels       disable all hwaccels
126   --disable-muxer=NAME     disable muxer NAME
127   --enable-muxer=NAME      enable muxer NAME
128   --disable-muxers         disable all muxers
129   --disable-demuxer=NAME   disable demuxer NAME
130   --enable-demuxer=NAME    enable demuxer NAME
131   --disable-demuxers       disable all demuxers
132   --enable-parser=NAME     enable parser NAME
133   --disable-parser=NAME    disable parser NAME
134   --disable-parsers        disable all parsers
135   --enable-bsf=NAME        enable bitstream filter NAME
136   --disable-bsf=NAME       disable bitstream filter NAME
137   --disable-bsfs           disable all bitstream filters
138   --enable-protocol=NAME   enable protocol NAME
139   --disable-protocol=NAME  disable protocol NAME
140   --disable-protocols      disable all protocols
141   --disable-indev=NAME     disable input device NAME
142   --disable-outdev=NAME    disable output device NAME
143   --disable-indevs         disable input devices
144   --disable-outdevs        disable output devices
145   --disable-devices        disable all devices
146   --enable-filter=NAME     enable filter NAME
147   --disable-filter=NAME    disable filter NAME
148   --disable-filters        disable all filters
149   --list-decoders          show all available decoders
150   --list-encoders          show all available encoders
151   --list-hwaccels          show all available hardware accelerators
152   --list-muxers            show all available muxers
153   --list-demuxers          show all available demuxers
154   --list-parsers           show all available parsers
155   --list-protocols         show all available protocols
156   --list-bsfs              show all available bitstream filters
157   --list-indevs            show all available input devices
158   --list-outdevs           show all available output devices
159   --list-filters           show all available filters
160
161 External library support:
162   --enable-avisynth        enable reading of AVISynth script files [no]
163   --enable-bzlib           enable bzlib [autodetect]
164   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
165   --enable-frei0r          enable frei0r video filtering
166   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
167   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
168   --enable-libopencv       enable video filtering via libopencv [no]
169   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
170                            and libraw1394 [no]
171   --enable-libdirac        enable Dirac support via libdirac [no]
172   --enable-libfaac         enable FAAC support via libfaac [no]
173   --enable-libfreetype     enable libfreetype [no]
174   --enable-libgsm          enable GSM support via libgsm [no]
175   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
176   --enable-libnut          enable NUT (de)muxing via libnut,
177                            native (de)muxer exists [no]
178   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
179   --enable-librtmp         enable RTMP[E] support via librtmp [no]
180   --enable-libschroedinger enable Dirac support via libschroedinger [no]
181   --enable-libspeex        enable Speex decoding via libspeex [no]
182   --enable-libtheora       enable Theora encoding via libtheora [no]
183   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
184   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
185   --enable-libvorbis       enable Vorbis encoding via libvorbis,
186                            native implementation exists [no]
187   --enable-libvpx          enable VP8 support via libvpx [no]
188   --enable-libx264         enable H.264 encoding via x264 [no]
189   --enable-libxavs         enable AVS encoding via xavs [no]
190   --enable-libxvid         enable Xvid encoding via xvidcore,
191                            native MPEG-4/Xvid encoder exists [no]
192   --enable-mlib            enable Sun medialib [no]
193   --enable-zlib            enable zlib [autodetect]
194
195 Advanced options (experts only):
196   --source-path=PATH       path to source code [$source_path]
197   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
198   --enable-cross-compile   assume a cross-compiler is used
199   --sysroot=PATH           root of cross-build tree
200   --sysinclude=PATH        location of cross-build system headers
201   --target-os=OS           compiler targets OS [$target_os]
202   --target-exec=CMD        command to run executables on target
203   --target-path=DIR        path to view of build directory on target
204   --nm=NM                  use nm tool
205   --ar=AR                  use archive tool AR [$ar_default]
206   --as=AS                  use assembler AS [$as_default]
207   --cc=CC                  use C compiler CC [$cc_default]
208   --ld=LD                  use linker LD
209   --host-cc=HOSTCC         use host C compiler HOSTCC
210   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
211   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
212   --host-libs=HLIBS        use libs HLIBS when linking for host
213   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
214   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
215   --extra-libs=ELIBS       add ELIBS [$ELIBS]
216   --extra-version=STRING   version string suffix []
217   --build-suffix=SUFFIX    library name suffix []
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --disable-asm            disable all assembler optimizations
222   --disable-altivec        disable AltiVec optimizations
223   --disable-amd3dnow       disable 3DNow! optimizations
224   --disable-amd3dnowext    disable 3DNow! extended optimizations
225   --disable-mmx            disable MMX optimizations
226   --disable-mmx2           disable MMX2 optimizations
227   --disable-sse            disable SSE optimizations
228   --disable-ssse3          disable SSSE3 optimizations
229   --disable-avx            disable AVX optimizations
230   --disable-armv5te        disable armv5te optimizations
231   --disable-armv6          disable armv6 optimizations
232   --disable-armv6t2        disable armv6t2 optimizations
233   --disable-armvfp         disable ARM VFP optimizations
234   --disable-iwmmxt         disable iwmmxt optimizations
235   --disable-mmi            disable MMI optimizations
236   --disable-neon           disable neon optimizations
237   --disable-vis            disable VIS optimizations
238   --disable-yasm           disable use of yasm assembler
239   --enable-pic             build position-independent code
240   --malloc-prefix=PFX      prefix malloc and related names with PFX
241   --enable-sram            allow use of on-chip SRAM
242   --disable-symver         disable symbol versioning
243
244 Developer options (useful when working on FFmpeg itself):
245   --disable-debug          disable debugging symbols
246   --enable-debug=LEVEL     set the debug level [$debuglevel]
247   --disable-optimizations  disable compiler optimizations
248   --enable-extra-warnings  enable more compiler warnings
249   --disable-stripping      disable stripping of executables and shared libraries
250   --samples=PATH           location of test samples for FATE, if not set use
251                            \$FATE_SAMPLES at make invocation time.
252
253 NOTE: Object files are built at the place where configure is launched.
254 EOF
255   exit 0
256 }
257
258 quotes='""'
259
260 log(){
261     echo "$@" >> $logfile
262 }
263
264 log_file(){
265     log BEGIN $1
266     pr -n -t $1 >> $logfile
267     log END $1
268 }
269
270 echolog(){
271     log "$@"
272     echo "$@"
273 }
274
275 warn(){
276     log "WARNING: $*"
277     WARNINGS="${WARNINGS}WARNING: $*\n"
278 }
279
280 die(){
281     echolog "$@"
282     cat <<EOF
283
284 If you think configure made a mistake, make sure you are using the latest
285 version from Git.  If the latest version fails, report the problem to the
286 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
287 EOF
288     if disabled logging; then
289         cat <<EOF
290 Rerun configure with logging enabled (do not use --disable-logging), and
291 include the log this produces with your report.
292 EOF
293     else
294 cat <<EOF
295 Include the log file "$logfile" produced by configure as this will help
296 solving the problem.
297 EOF
298     fi
299     exit 1
300 }
301
302 # Avoid locale weirdness, besides we really just want to translate ASCII.
303 toupper(){
304     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
305 }
306
307 tolower(){
308     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
309 }
310
311 c_escape(){
312     echo "$*" | sed 's/["\\]/\\\0/g'
313 }
314
315 sh_quote(){
316     v=$(echo "$1" | sed "s/'/'\\\\''/g")
317     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
318     echo "$v"
319 }
320
321 cleanws(){
322     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
323 }
324
325 filter(){
326     pat=$1
327     shift
328     for v; do
329         eval "case $v in $pat) echo $v ;; esac"
330     done
331 }
332
333 filter_out(){
334     pat=$1
335     shift
336     for v; do
337         eval "case $v in $pat) ;; *) echo $v ;; esac"
338     done
339 }
340
341 map(){
342     m=$1
343     shift
344     for v; do eval $m; done
345 }
346
347 set_all(){
348     value=$1
349     shift
350     for var in $*; do
351         eval $var=$value
352     done
353 }
354
355 set_weak(){
356     value=$1
357     shift
358     for var; do
359         eval : \${$var:=$value}
360     done
361 }
362
363 set_safe(){
364     var=$1
365     shift
366     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
367 }
368
369 get_safe(){
370     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
371 }
372
373 pushvar(){
374     for var in $*; do
375         eval level=\${${var}_level:=0}
376         eval ${var}_${level}="\$$var"
377         eval ${var}_level=$(($level+1))
378     done
379 }
380
381 popvar(){
382     for var in $*; do
383         eval level=\${${var}_level:-0}
384         test $level = 0 && continue
385         eval level=$(($level-1))
386         eval $var="\${${var}_${level}}"
387         eval ${var}_level=$level
388         eval unset ${var}_${level}
389     done
390 }
391
392 enable(){
393     set_all yes $*
394 }
395
396 disable(){
397     set_all no $*
398 }
399
400 enable_weak(){
401     set_weak yes $*
402 }
403
404 disable_weak(){
405     set_weak no $*
406 }
407
408 enable_safe(){
409     for var; do
410         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
411     done
412 }
413
414 disable_safe(){
415     for var; do
416         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
417     done
418 }
419
420 do_enable_deep(){
421     for var; do
422         enabled $var && continue
423         eval sel="\$${var}_select"
424         eval sgs="\$${var}_suggest"
425         pushvar var sgs
426         enable_deep $sel
427         popvar sgs
428         enable_deep_weak $sgs
429         popvar var
430     done
431 }
432
433 enable_deep(){
434     do_enable_deep $*
435     enable $*
436 }
437
438 enable_deep_weak(){
439     do_enable_deep $*
440     enable_weak $*
441 }
442
443 enabled(){
444     test "${1#!}" = "$1" && op== || op=!=
445     eval test "x\$${1#!}" $op "xyes"
446 }
447
448 disabled(){
449     test "${1#!}" = "$1" && op== || op=!=
450     eval test "x\$${1#!}" $op "xno"
451 }
452
453 enabled_all(){
454     for opt; do
455         enabled $opt || return 1
456     done
457 }
458
459 disabled_all(){
460     for opt; do
461         disabled $opt || return 1
462     done
463 }
464
465 enabled_any(){
466     for opt; do
467         enabled $opt && return 0
468     done
469 }
470
471 disabled_any(){
472     for opt; do
473         disabled $opt && return 0
474     done
475     return 1
476 }
477
478 set_default(){
479     for opt; do
480         eval : \${$opt:=\$${opt}_default}
481     done
482 }
483
484 is_in(){
485     value=$1
486     shift
487     for var in $*; do
488         [ $var = $value ] && return 0
489     done
490     return 1
491 }
492
493 check_deps(){
494     for cfg; do
495         cfg="${cfg#!}"
496         enabled ${cfg}_checking && die "Circular dependency for $cfg."
497         disabled ${cfg}_checking && continue
498         enable ${cfg}_checking
499
500         eval dep_all="\$${cfg}_deps"
501         eval dep_any="\$${cfg}_deps_any"
502         eval dep_sel="\$${cfg}_select"
503         eval dep_sgs="\$${cfg}_suggest"
504         eval dep_ifa="\$${cfg}_if"
505         eval dep_ifn="\$${cfg}_if_any"
506
507         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
508         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
509         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
510
511         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
512         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
513         enabled_all  $dep_all || disable $cfg
514         enabled_any  $dep_any || disable $cfg
515         disabled_any $dep_sel && disable $cfg
516
517         if enabled $cfg; then
518             eval dep_extralibs="\$${cfg}_extralibs"
519             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
520             enable_deep $dep_sel
521             enable_deep_weak $dep_sgs
522         fi
523
524         disable ${cfg}_checking
525     done
526 }
527
528 print_config_h(){
529     enabled $1 && v=1 || v=0
530     echo "#define $2 $v"
531 }
532
533 print_config_mak(){
534     enabled $1 && v= || v=!
535     echo "$v$2=yes"
536 }
537
538 print_config_asm(){
539     enabled $1 && echo "%define $2"
540 }
541
542 print_config(){
543     pfx=$1
544     files=$2
545     shift 2
546     for cfg; do
547         ucname="$(toupper $cfg)"
548         for f in $files; do
549             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
550         done
551     done
552 }
553
554 print_enabled(){
555     test "$1" = -n && end=" " && shift || end="\n"
556     suf=$1
557     shift
558     for v; do
559         enabled $v && printf "%s$end" ${v%$suf};
560     done
561 }
562
563 append(){
564     var=$1
565     shift
566     eval "$var=\"\$$var $*\""
567 }
568
569 prepend(){
570     var=$1
571     shift
572     eval "$var=\"$* \$$var\""
573 }
574
575 add_cppflags(){
576     append CPPFLAGS $($filter_cppflags "$@")
577 }
578
579 add_cflags(){
580     append CFLAGS $($filter_cflags "$@")
581 }
582
583 add_asflags(){
584     append ASFLAGS $($filter_asflags "$@")
585 }
586
587 add_ldflags(){
588     append LDFLAGS "$@"
589 }
590
591 add_extralibs(){
592     prepend extralibs "$@"
593 }
594
595 check_cmd(){
596     log "$@"
597     "$@" >> $logfile 2>&1
598 }
599
600 check_cc(){
601     log check_cc "$@"
602     cat > $TMPC
603     log_file $TMPC
604     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
605 }
606
607 check_cpp(){
608     log check_cpp "$@"
609     cat > $TMPC
610     log_file $TMPC
611     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
612 }
613
614 check_as(){
615     log check_as "$@"
616     cat > $TMPC
617     log_file $TMPC
618     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
619 }
620
621 check_asm(){
622     log check_asm "$@"
623     name="$1"
624     code="$2"
625     shift 2
626     disable $name
627     check_as "$@" <<EOF && enable $name
628 void foo(void){ __asm__ volatile($code); }
629 EOF
630 }
631
632 check_yasm(){
633     log check_yasm "$@"
634     echo "$1" > $TMPS
635     log_file $TMPS
636     shift 1
637     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
638 }
639
640 check_ld(){
641     log check_ld "$@"
642     flags=''
643     libs=''
644     for f; do
645         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
646     done
647     check_cc $($filter_cflags $flags) || return
648     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
649 }
650
651 check_cppflags(){
652     log check_cppflags "$@"
653     set -- $($filter_cppflags "$@")
654     check_cc "$@" <<EOF && append CPPFLAGS "$@"
655 int x;
656 EOF
657 }
658
659 check_cflags(){
660     log check_cflags "$@"
661     set -- $($filter_cflags "$@")
662     check_cc "$@" <<EOF && append CFLAGS "$@"
663 int x;
664 EOF
665 }
666
667 test_ldflags(){
668     log test_ldflags "$@"
669     check_ld "$@" <<EOF
670 int main(void){ return 0; }
671 EOF
672 }
673
674 check_ldflags(){
675     log check_ldflags "$@"
676     test_ldflags "$@" && add_ldflags "$@"
677 }
678
679 check_header(){
680     log check_header "$@"
681     header=$1
682     shift
683     disable_safe $header
684     check_cpp "$@" <<EOF && enable_safe $header
685 #include <$header>
686 int x;
687 EOF
688 }
689
690 check_func(){
691     log check_func "$@"
692     func=$1
693     shift
694     disable $func
695     check_ld "$@" <<EOF && enable $func
696 extern int $func();
697 int main(void){ $func(); }
698 EOF
699 }
700
701 check_mathfunc(){
702     log check_mathfunc "$@"
703     func=$1
704     shift
705     disable $func
706     check_ld "$@" <<EOF && enable $func
707 #include <math.h>
708 float foo(float f) { return $func(f); }
709 int main(void){ return 0; }
710 EOF
711 }
712
713 check_func_headers(){
714     log check_func_headers "$@"
715     headers=$1
716     funcs=$2
717     shift 2
718     {
719         for hdr in $headers; do
720             echo "#include <$hdr>"
721         done
722         for func in $funcs; do
723             echo "long check_$func(void) { return (long) $func; }"
724         done
725         echo "int main(void) { return 0; }"
726     } | check_ld "$@" && enable $funcs && enable_safe $headers
727 }
728
729 check_cpp_condition(){
730     log check_cpp_condition "$@"
731     header=$1
732     condition=$2
733     shift 2
734     check_cpp $($filter_cppflags "$@") <<EOF
735 #include <$header>
736 #if !($condition)
737 #error "unsatisfied condition: $condition"
738 #endif
739 EOF
740 }
741
742 check_lib(){
743     log check_lib "$@"
744     header="$1"
745     func="$2"
746     shift 2
747     check_header $header && check_func $func "$@" && add_extralibs "$@"
748 }
749
750 check_lib2(){
751     log check_lib2 "$@"
752     headers="$1"
753     funcs="$2"
754     shift 2
755     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
756 }
757
758 check_pkg_config(){
759     log check_pkg_config "$@"
760     pkg="$1"
761     headers="$2"
762     funcs="$3"
763     shift 3
764     $pkg_config --exists $pkg || return
765     pkg_cflags=$($pkg_config --cflags $pkg)
766     pkg_libs=$($pkg_config --libs $pkg)
767     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
768         set_safe ${pkg}_cflags $pkg_cflags   &&
769         set_safe ${pkg}_libs   $pkg_libs
770 }
771
772 check_exec(){
773     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
774 }
775
776 check_exec_crash(){
777     code=$(cat)
778
779     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
780     # are safe but may not be available everywhere.  Thus we use
781     # raise(SIGTERM) instead.  The check is run in a subshell so we
782     # can redirect the "Terminated" message from the shell.  SIGBUS
783     # is not defined by standard C so it is used conditionally.
784
785     (check_exec "$@") >> $logfile 2>&1 <<EOF
786 #include <signal.h>
787 static void sighandler(int sig){
788     raise(SIGTERM);
789 }
790 int main(void){
791     signal(SIGILL, sighandler);
792     signal(SIGFPE, sighandler);
793     signal(SIGSEGV, sighandler);
794 #ifdef SIGBUS
795     signal(SIGBUS, sighandler);
796 #endif
797     { $code }
798 }
799 EOF
800 }
801
802 check_type(){
803     log check_type "$@"
804     headers=$1
805     type=$2
806     shift 2
807     disable_safe "$type"
808     incs=""
809     for hdr in $headers; do
810         incs="$incs
811 #include <$hdr>"
812     done
813     check_cc "$@" <<EOF && enable_safe "$type"
814 $incs
815 $type v;
816 EOF
817 }
818
819 check_struct(){
820     log check_type "$@"
821     headers=$1
822     struct=$2
823     member=$3
824     shift 3
825     disable_safe "${struct}_${member}"
826     incs=""
827     for hdr in $headers; do
828         incs="$incs
829 #include <$hdr>"
830     done
831     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
832 $incs
833 const void *p = &(($struct *)0)->$member;
834 EOF
835 }
836
837 require(){
838     name="$1"
839     header="$2"
840     func="$3"
841     shift 3
842     check_lib $header $func "$@" || die "ERROR: $name not found"
843 }
844
845 require2(){
846     name="$1"
847     headers="$2"
848     func="$3"
849     shift 3
850     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
851 }
852
853 require_pkg_config(){
854     pkg="$1"
855     check_pkg_config "$@" || die "ERROR: $pkg not found"
856     add_cflags    $(get_safe ${pkg}_cflags)
857     add_extralibs $(get_safe ${pkg}_libs)
858 }
859
860 check_host_cc(){
861     log check_host_cc "$@"
862     cat > $TMPC
863     log_file $TMPC
864     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
865 }
866
867 check_host_cflags(){
868     log check_host_cflags "$@"
869     check_host_cc "$@" <<EOF && append host_cflags "$@"
870 int x;
871 EOF
872 }
873
874 apply(){
875     file=$1
876     shift
877     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
878 }
879
880 cp_if_changed(){
881     cmp -s "$1" "$2" &&
882         echo "$2 is unchanged" ||
883         cp -f "$1" "$2"
884 }
885
886 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
887 # system-dependent things.
888
889 COMPONENT_LIST="
890     bsfs
891     decoders
892     demuxers
893     encoders
894     filters
895     hwaccels
896     indevs
897     muxers
898     outdevs
899     parsers
900     protocols
901 "
902
903 CONFIG_LIST="
904     $COMPONENT_LIST
905     aandct
906     ac3dsp
907     avcodec
908     avdevice
909     avfilter
910     avformat
911     avisynth
912     bzlib
913     crystalhd
914     dct
915     doc
916     dwt
917     dxva2
918     fastdiv
919     ffmpeg
920     ffplay
921     ffprobe
922     ffserver
923     fft
924     frei0r
925     golomb
926     gpl
927     gray
928     h264dsp
929     h264pred
930     hardcoded_tables
931     huffman
932     libcelt
933     libdc1394
934     libdirac
935     libfaac
936     libfreetype
937     libgsm
938     libmp3lame
939     libnut
940     libopencore_amrnb
941     libopencore_amrwb
942     libopencv
943     libopenjpeg
944     librtmp
945     libschroedinger
946     libspeex
947     libtheora
948     libvo_aacenc
949     libvo_amrwbenc
950     libvorbis
951     libvpx
952     libx264
953     libxavs
954     libxvid
955     lpc
956     lsp
957     mdct
958     memalign_hack
959     mlib
960     mpegaudio_hp
961     network
962     nonfree
963     pic
964     postproc
965     rdft
966     rtpdec
967     runtime_cpudetect
968     shared
969     sinewin
970     small
971     sram
972     static
973     swscale
974     swscale_alpha
975     vaapi
976     vdpau
977     version3
978     x11grab
979     zlib
980 "
981
982 THREADS_LIST='
983     pthreads
984     w32threads
985 '
986
987 ARCH_LIST='
988     alpha
989     arm
990     avr32
991     avr32_ap
992     avr32_uc
993     bfin
994     ia64
995     m68k
996     mips
997     mips64
998     parisc
999     ppc
1000     ppc64
1001     s390
1002     sh4
1003     sparc
1004     sparc64
1005     tomi
1006     x86
1007     x86_32
1008     x86_64
1009 '
1010
1011 ARCH_EXT_LIST='
1012     altivec
1013     amd3dnow
1014     amd3dnowext
1015     armv5te
1016     armv6
1017     armv6t2
1018     armvfp
1019     avx
1020     iwmmxt
1021     mmi
1022     mmx
1023     mmx2
1024     neon
1025     ppc4xx
1026     sse
1027     ssse3
1028     vis
1029 '
1030
1031 HAVE_LIST_PUB='
1032     bigendian
1033     fast_unaligned
1034 '
1035
1036 HAVE_LIST="
1037     $ARCH_EXT_LIST
1038     $HAVE_LIST_PUB
1039     $THREADS_LIST
1040     aligned_stack
1041     alsa_asoundlib_h
1042     altivec_h
1043     arpa_inet_h
1044     attribute_may_alias
1045     attribute_packed
1046     bswap
1047     closesocket
1048     cmov
1049     dcbzl
1050     dev_bktr_ioctl_bt848_h
1051     dev_bktr_ioctl_meteor_h
1052     dev_ic_bt8xx_h
1053     dev_video_meteor_ioctl_meteor_h
1054     dev_video_bktr_ioctl_bt848_h
1055     dlfcn_h
1056     dlopen
1057     dos_paths
1058     ebp_available
1059     ebx_available
1060     exp2
1061     exp2f
1062     fast_64bit
1063     fast_clz
1064     fast_cmov
1065     fcntl
1066     fork
1067     getaddrinfo
1068     gethrtime
1069     GetProcessMemoryInfo
1070     GetProcessTimes
1071     getrusage
1072     gnu_as
1073     struct_rusage_ru_maxrss
1074     ibm_asm
1075     inet_aton
1076     inline_asm
1077     isatty
1078     kbhit
1079     ldbrx
1080     libdc1394_1
1081     libdc1394_2
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     ld
1189     logfile
1190     malloc_prefix
1191     nm
1192     pkg_config
1193     samples
1194     source_path
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
1218 mmi_deps="mips"
1219
1220 altivec_deps="ppc"
1221 ppc4xx_deps="ppc"
1222
1223 vis_deps="sparc"
1224
1225 x86_64_suggest="cmov fast_cmov"
1226 amd3dnow_deps="mmx"
1227 amd3dnowext_deps="amd3dnow"
1228 mmx_deps="x86"
1229 mmx2_deps="mmx"
1230 sse_deps="mmx"
1231 ssse3_deps="sse"
1232 avx_deps="ssse3"
1233
1234 aligned_stack_if_any="ppc x86"
1235 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1236 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1237 fast_unaligned_if_any="armv6 ppc x86"
1238
1239 need_memalign="altivec neon sse"
1240 inline_asm_deps="!tms470"
1241
1242 symver_if_any="symver_asm_label symver_gnu_asm"
1243
1244 # subsystems
1245 dct_select="rdft"
1246 mdct_select="fft"
1247 rdft_select="fft"
1248
1249 # decoders / encoders / hardware accelerators
1250 aac_decoder_select="mdct sinewin"
1251 aac_encoder_select="mdct sinewin"
1252 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1253 ac3_decoder_select="mdct ac3dsp ac3_parser"
1254 ac3_encoder_select="mdct ac3dsp"
1255 ac3_fixed_encoder_select="mdct ac3dsp"
1256 alac_encoder_select="lpc"
1257 amrnb_decoder_select="lsp"
1258 amrwb_decoder_select="lsp"
1259 atrac1_decoder_select="mdct sinewin"
1260 atrac3_decoder_select="mdct"
1261 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1262 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1263 cavs_decoder_select="golomb"
1264 cook_decoder_select="mdct sinewin"
1265 cscd_decoder_suggest="zlib"
1266 dca_decoder_select="mdct"
1267 dnxhd_encoder_select="aandct"
1268 dxa_decoder_select="zlib"
1269 eac3_decoder_select="ac3_decoder"
1270 eamad_decoder_select="aandct"
1271 eatgq_decoder_select="aandct"
1272 eatqi_decoder_select="aandct"
1273 ffv1_decoder_select="golomb"
1274 flac_decoder_select="golomb"
1275 flac_encoder_select="golomb lpc"
1276 flashsv_decoder_select="zlib"
1277 flashsv_encoder_select="zlib"
1278 flashsv2_encoder_select="zlib"
1279 flv_decoder_select="h263_decoder"
1280 flv_encoder_select="h263_encoder"
1281 fraps_decoder_select="huffman"
1282 h261_encoder_select="aandct"
1283 h263_decoder_select="h263_parser"
1284 h263_encoder_select="aandct"
1285 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1286 h263i_decoder_select="h263_decoder"
1287 h263p_encoder_select="h263_encoder"
1288 h264_decoder_select="golomb h264dsp h264pred"
1289 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1290 h264_dxva2_hwaccel_deps="dxva2api_h"
1291 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1292 h264_vaapi_hwaccel_select="vaapi"
1293 h264_vdpau_decoder_select="vdpau h264_decoder"
1294 imc_decoder_select="fft mdct sinewin"
1295 jpegls_decoder_select="golomb"
1296 jpegls_encoder_select="golomb"
1297 ljpeg_encoder_select="aandct"
1298 loco_decoder_select="golomb"
1299 mjpeg_encoder_select="aandct"
1300 mlp_decoder_select="mlp_parser"
1301 mp1float_decoder_select="dct"
1302 mp2float_decoder_select="dct"
1303 mp3adufloat_decoder_select="dct"
1304 mp3float_decoder_select="dct"
1305 mp3on4float_decoder_select="dct"
1306 mpeg1video_encoder_select="aandct"
1307 mpeg2video_encoder_select="aandct"
1308 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1309 mpeg4_encoder_select="h263_encoder"
1310 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1311 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1312 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1313 mpeg2_crystalhd_decoder_select="crystalhd"
1314 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1315 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1316 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1317 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1318 mpeg4_crystalhd_decoder_select="crystalhd"
1319 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1320 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1321 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1322 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1323 msmpeg4_crystalhd_decoder_select="crystalhd"
1324 msmpeg4v1_decoder_select="h263_decoder"
1325 msmpeg4v1_encoder_select="h263_encoder"
1326 msmpeg4v2_decoder_select="h263_decoder"
1327 msmpeg4v2_encoder_select="h263_encoder"
1328 msmpeg4v3_decoder_select="h263_decoder"
1329 msmpeg4v3_encoder_select="h263_encoder"
1330 nellymoser_decoder_select="mdct sinewin"
1331 nellymoser_encoder_select="mdct sinewin"
1332 png_decoder_select="zlib"
1333 png_encoder_select="zlib"
1334 qcelp_decoder_select="lsp"
1335 qdm2_decoder_select="mdct rdft"
1336 ra_144_encoder_select="lpc"
1337 rv10_decoder_select="h263_decoder"
1338 rv10_encoder_select="h263_encoder"
1339 rv20_decoder_select="h263_decoder"
1340 rv20_encoder_select="h263_encoder"
1341 rv30_decoder_select="golomb h264pred"
1342 rv40_decoder_select="golomb h264pred"
1343 shorten_decoder_select="golomb"
1344 sipr_decoder_select="lsp"
1345 snow_decoder_select="dwt"
1346 snow_encoder_select="aandct dwt"
1347 sonic_decoder_select="golomb"
1348 sonic_encoder_select="golomb"
1349 sonic_ls_encoder_select="golomb"
1350 svq1_encoder_select="aandct"
1351 svq3_decoder_select="golomb h264dsp h264pred"
1352 svq3_decoder_suggest="zlib"
1353 theora_decoder_select="vp3_decoder"
1354 tiff_decoder_suggest="zlib"
1355 tiff_encoder_suggest="zlib"
1356 truehd_decoder_select="mlp_decoder"
1357 tscc_decoder_select="zlib"
1358 twinvq_decoder_select="mdct lsp sinewin"
1359 vc1_decoder_select="h263_decoder"
1360 vc1_crystalhd_decoder_select="crystalhd"
1361 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1362 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1363 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1364 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1365 vorbis_decoder_select="mdct"
1366 vorbis_encoder_select="mdct"
1367 vp6_decoder_select="huffman"
1368 vp6a_decoder_select="vp6_decoder"
1369 vp6f_decoder_select="vp6_decoder"
1370 vp8_decoder_select="h264pred"
1371 wmapro_decoder_select="mdct sinewin"
1372 wmav1_decoder_select="mdct sinewin"
1373 wmav1_encoder_select="mdct sinewin"
1374 wmav2_decoder_select="mdct sinewin"
1375 wmav2_encoder_select="mdct sinewin"
1376 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1377 wmv1_decoder_select="h263_decoder"
1378 wmv1_encoder_select="h263_encoder"
1379 wmv2_decoder_select="h263_decoder"
1380 wmv2_encoder_select="h263_encoder"
1381 wmv3_decoder_select="vc1_decoder"
1382 wmv3_crystalhd_decoder_select="crystalhd"
1383 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1384 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1385 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1386 zlib_decoder_select="zlib"
1387 zlib_encoder_select="zlib"
1388 zmbv_decoder_select="zlib"
1389 zmbv_encoder_select="zlib"
1390
1391 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1392 vaapi_deps="va_va_h"
1393 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1394
1395 # parsers
1396 h264_parser_select="golomb h264dsp h264pred"
1397
1398 # external libraries
1399 libcelt_decoder_deps="libcelt"
1400 libdirac_decoder_deps="libdirac !libschroedinger"
1401 libdirac_encoder_deps="libdirac"
1402 libfaac_encoder_deps="libfaac"
1403 libgsm_decoder_deps="libgsm"
1404 libgsm_encoder_deps="libgsm"
1405 libgsm_ms_decoder_deps="libgsm"
1406 libgsm_ms_encoder_deps="libgsm"
1407 libmp3lame_encoder_deps="libmp3lame"
1408 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1409 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1410 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1411 libopenjpeg_decoder_deps="libopenjpeg"
1412 libschroedinger_decoder_deps="libschroedinger"
1413 libschroedinger_encoder_deps="libschroedinger"
1414 libspeex_decoder_deps="libspeex"
1415 libtheora_encoder_deps="libtheora"
1416 libvo_aacenc_encoder_deps="libvo_aacenc"
1417 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1418 libvorbis_encoder_deps="libvorbis"
1419 libvpx_decoder_deps="libvpx"
1420 libvpx_encoder_deps="libvpx"
1421 libx264_encoder_deps="libx264"
1422 libxavs_encoder_deps="libxavs"
1423 libxvid_encoder_deps="libxvid"
1424
1425 # demuxers / muxers
1426 ac3_demuxer_select="ac3_parser"
1427 asf_stream_muxer_select="asf_muxer"
1428 avisynth_demuxer_deps="avisynth"
1429 dirac_demuxer_select="dirac_parser"
1430 eac3_demuxer_select="ac3_parser"
1431 flac_demuxer_select="flac_parser"
1432 ipod_muxer_select="mov_muxer"
1433 libnut_demuxer_deps="libnut"
1434 libnut_muxer_deps="libnut"
1435 matroska_audio_muxer_select="matroska_muxer"
1436 matroska_demuxer_suggest="zlib bzlib"
1437 mov_demuxer_suggest="zlib"
1438 mp3_demuxer_select="mpegaudio_parser"
1439 mp4_muxer_select="mov_muxer"
1440 mpegtsraw_demuxer_select="mpegts_demuxer"
1441 mxf_d10_muxer_select="mxf_muxer"
1442 ogg_demuxer_select="golomb"
1443 psp_muxer_select="mov_muxer"
1444 rtp_demuxer_select="sdp_demuxer"
1445 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1446 rtsp_demuxer_select="http_protocol rtpdec"
1447 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1448 sap_demuxer_select="sdp_demuxer"
1449 sap_muxer_select="rtp_muxer rtp_protocol"
1450 sdp_demuxer_select="rtpdec"
1451 spdif_muxer_select="aac_parser"
1452 tg2_muxer_select="mov_muxer"
1453 tgp_muxer_select="mov_muxer"
1454 w64_demuxer_deps="wav_demuxer"
1455
1456 # indevs / outdevs
1457 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1458 alsa_outdev_deps="alsa_asoundlib_h"
1459 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1460 dv1394_indev_deps="dv1394 dv_demuxer"
1461 fbdev_indev_deps="linux_fb_h"
1462 jack_indev_deps="jack_jack_h sem_timedwait"
1463 libdc1394_indev_deps="libdc1394"
1464 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1465 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1466 sndio_indev_deps="sndio_h"
1467 sndio_outdev_deps="sndio_h"
1468 v4l_indev_deps="linux_videodev_h"
1469 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1470 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1471 vfwcap_indev_extralibs="-lavicap32"
1472 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1473 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1474
1475 # protocols
1476 gopher_protocol_deps="network"
1477 http_protocol_deps="network"
1478 http_protocol_select="tcp_protocol"
1479 mmsh_protocol_select="http_protocol"
1480 mmst_protocol_deps="network"
1481 rtmp_protocol_select="tcp_protocol"
1482 rtp_protocol_select="udp_protocol"
1483 tcp_protocol_deps="network"
1484 udp_protocol_deps="network"
1485
1486 # filters
1487 blackframe_filter_deps="gpl"
1488 cropdetect_filter_deps="gpl"
1489 drawtext_filter_deps="libfreetype"
1490 frei0r_filter_deps="frei0r dlopen strtok_r"
1491 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1492 hqdn3d_filter_deps="gpl"
1493 mp_filter_deps="gpl"
1494 ocv_filter_deps="libopencv"
1495 scale_filter_deps="swscale"
1496 yadif_filter_deps="gpl"
1497
1498 # libraries
1499 avdevice_deps="avcodec avformat"
1500 avformat_deps="avcodec"
1501
1502 # programs
1503 ffmpeg_deps="avcodec avformat swscale"
1504 ffmpeg_select="buffer_filter"
1505 ffplay_deps="avcodec avformat swscale sdl"
1506 ffplay_select="rdft"
1507 ffprobe_deps="avcodec avformat"
1508 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1509 ffserver_extralibs='$ldl'
1510
1511 doc_deps="texi2html"
1512
1513 # tests
1514
1515 test_deps(){
1516     suf1=$1
1517     suf2=$2
1518     shift 2
1519     for v; do
1520         dep=${v%=*}
1521         tests=${v#*=}
1522         for name in ${tests}; do
1523             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1524         done
1525     done
1526 }
1527
1528 set_ne_test_deps(){
1529     eval ${1}_be_test_deps="bigendian"
1530     eval ${1}_le_test_deps="!bigendian"
1531 }
1532
1533 test_deps _encoder _decoder                                             \
1534     adpcm_g726=g726                                                     \
1535     adpcm_ima_qt                                                        \
1536     adpcm_ima_wav                                                       \
1537     adpcm_ms                                                            \
1538     adpcm_swf                                                           \
1539     adpcm_yamaha=adpcm_yam                                              \
1540     alac                                                                \
1541     asv1                                                                \
1542     asv2                                                                \
1543     bmp                                                                 \
1544     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1545     dvvideo="dv dv50"                                                   \
1546     ffv1                                                                \
1547     flac                                                                \
1548     flashsv                                                             \
1549     flv                                                                 \
1550     gif                                                                 \
1551     h261                                                                \
1552     h263="h263 h263p"                                                   \
1553     huffyuv                                                             \
1554     jpegls                                                              \
1555     mjpeg="jpg mjpeg ljpeg"                                             \
1556     mp2                                                                 \
1557     mpeg1video="mpeg mpeg1b"                                            \
1558     mpeg2video="mpeg2 mpeg2thread"                                      \
1559     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1560     msmpeg4v3=msmpeg4                                                   \
1561     msmpeg4v2                                                           \
1562     pbm=pbmpipe                                                         \
1563     pcx                                                                 \
1564     pgm="pgm pgmpipe"                                                   \
1565     png                                                                 \
1566     ppm="ppm ppmpipe"                                                   \
1567     rawvideo="rgb yuv"                                                  \
1568     roq                                                                 \
1569     rv10                                                                \
1570     rv20                                                                \
1571     sgi                                                                 \
1572     snow="snow snowll"                                                  \
1573     svq1                                                                \
1574     targa=tga                                                           \
1575     tiff                                                                \
1576     wmav1                                                               \
1577     wmav2                                                               \
1578     wmv1                                                                \
1579     wmv2                                                                \
1580
1581 test_deps _muxer _demuxer                                               \
1582     aiff                                                                \
1583     pcm_alaw=alaw                                                       \
1584     asf                                                                 \
1585     au                                                                  \
1586     avi                                                                 \
1587     dv=dv_fmt                                                           \
1588     ffm                                                                 \
1589     flv=flv_fmt                                                         \
1590     gxf                                                                 \
1591     matroska=mkv                                                        \
1592     mmf                                                                 \
1593     mov                                                                 \
1594     pcm_mulaw=mulaw                                                     \
1595     mxf                                                                 \
1596     nut                                                                 \
1597     ogg                                                                 \
1598     rawvideo=pixfmt                                                     \
1599     rm                                                                  \
1600     swf                                                                 \
1601     mpegts=ts                                                           \
1602     voc                                                                 \
1603     wav                                                                 \
1604     yuv4mpegpipe=yuv4mpeg                                               \
1605
1606 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1607 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1608
1609 set_ne_test_deps pixdesc
1610 set_ne_test_deps pixfmts_copy
1611 set_ne_test_deps pixfmts_crop
1612 set_ne_test_deps pixfmts_hflip
1613 set_ne_test_deps pixfmts_null
1614 set_ne_test_deps pixfmts_pad
1615 set_ne_test_deps pixfmts_scale
1616 set_ne_test_deps pixfmts_vflip
1617
1618 # default parameters
1619
1620 logfile="config.log"
1621
1622 # installation paths
1623 prefix_default="/usr/local"
1624 bindir_default='${prefix}/bin'
1625 datadir_default='${prefix}/share/ffmpeg'
1626 incdir_default='${prefix}/include'
1627 libdir_default='${prefix}/lib'
1628 mandir_default='${prefix}/share/man'
1629 shlibdir_default="$libdir_default"
1630
1631 # toolchain
1632 ar_default="ar"
1633 cc_default="gcc"
1634 cc_version=\"unknown\"
1635 host_cc_default="gcc"
1636 ln_s="ln -sf"
1637 nm_default="nm"
1638 objformat="elf"
1639 pkg_config_default=pkg-config
1640 ranlib="ranlib"
1641 strip_default="strip"
1642 yasmexe="yasm"
1643 nogas=":"
1644
1645 nm_opts='-g'
1646
1647 # machine
1648 arch_default=$(uname -m)
1649 cpu="generic"
1650
1651 # OS
1652 target_os_default=$(tolower $(uname -s))
1653 host_os=$target_os_default
1654
1655 # configurable options
1656 enable avcodec
1657 enable avdevice
1658 enable avfilter
1659 enable avformat
1660 enable avutil
1661 enable asm
1662 enable debug
1663 enable doc
1664 enable fastdiv
1665 enable ffmpeg
1666 enable ffplay
1667 enable ffprobe
1668 enable ffserver
1669 enable mpegaudio_hp
1670 enable network
1671 enable optimizations
1672 enable protocols
1673 enable static
1674 enable stripping
1675 enable swscale
1676 enable swscale_alpha
1677
1678 # build settings
1679 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1680 FFSERVERLDFLAGS=-Wl,-E
1681 LIBPREF="lib"
1682 LIBSUF=".a"
1683 FULLNAME='$(NAME)$(BUILDSUF)'
1684 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1685 SLIBPREF="lib"
1686 SLIBSUF=".so"
1687 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1688 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1689 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1690 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1691
1692 CC_O='-o $@'
1693
1694 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1695 host_libs='-lm'
1696
1697 target_path='$(CURDIR)'
1698
1699 # since the object filename is not given with the -MM flag, the compiler
1700 # is only able to print the basename, and we must add the path ourselves
1701 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1702 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1703
1704 # find source path
1705 source_path="$(dirname "$0")"
1706 enable source_path_used
1707 if test -f configure; then
1708     source_path="$(pwd)"
1709     disable source_path_used
1710 else
1711     source_path="$(cd "$source_path"; pwd)"
1712     echo "$source_path" | grep -q '[[:blank:]]' &&
1713         die "Out of tree builds are impossible with whitespace in source path."
1714     test -e "$source_path/config.h" &&
1715         die "Out of tree builds are impossible with config.h in source dir."
1716 fi
1717
1718 for v in "$@"; do
1719     r=${v#*=}
1720     l=${v%"$r"}
1721     r=$(sh_quote "$r")
1722     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1723 done
1724
1725 find_things(){
1726     thing=$1
1727     pattern=$2
1728     file=$source_path/$3
1729     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1730 }
1731
1732 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1733 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1734 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1735 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1736 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1737 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1738 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1739 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1740 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1741 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1742 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1743
1744 find_tests(){
1745     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1746 }
1747
1748 ACODEC_TESTS=$(find_tests acodec)
1749 VCODEC_TESTS=$(find_tests vsynth1)
1750 LAVF_TESTS=$(find_tests lavf)
1751 LAVFI_TESTS=$(find_tests lavfi)
1752 SEEK_TESTS=$(find_tests seek seek_)
1753
1754 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1755
1756 for n in $COMPONENT_LIST; do
1757     v=$(toupper ${n%s})_LIST
1758     eval enable \$$v
1759     eval ${n}_if_any="\$$v"
1760 done
1761
1762 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1763
1764 die_unknown(){
1765     echo "Unknown option \"$1\"."
1766     echo "See $0 --help for available options."
1767     exit 1
1768 }
1769
1770 show_list() {
1771     suffix=_$1
1772     shift
1773     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1774     exit 0
1775 }
1776
1777 for opt do
1778     optval="${opt#*=}"
1779     case "$opt" in
1780     --extra-ldflags=*) add_ldflags $optval
1781     ;;
1782     --extra-libs=*) add_extralibs $optval
1783     ;;
1784     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1785     ;;
1786     --enable-debug=*) debuglevel="$optval"
1787     ;;
1788     --disable-everything)
1789     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1790     ;;
1791     --enable-*=*|--disable-*=*)
1792     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1793     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1794     eval list=\$$(toupper $thing)_LIST
1795     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1796     $action $(filter "$name" $list)
1797     ;;
1798     --enable-?*|--disable-?*)
1799     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1800     if is_in $option $COMPONENT_LIST; then
1801         test $action = disable && action=unset
1802         eval $action \$$(toupper ${option%s})_LIST
1803     elif is_in $option $CMDLINE_SELECT; then
1804         $action $option
1805     else
1806         die_unknown $opt
1807     fi
1808     ;;
1809     --list-*)
1810         NAME="${opt#--list-}"
1811         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1812         NAME=${NAME%s}
1813         eval show_list $NAME \$$(toupper $NAME)_LIST
1814     ;;
1815     --help|-h) show_help
1816     ;;
1817     *)
1818     optname="${opt%%=*}"
1819     optname="${optname#--}"
1820     optname=$(echo "$optname" | sed 's/-/_/g')
1821     if is_in $optname $CMDLINE_SET; then
1822         eval $optname='$optval'
1823     elif is_in $optname $CMDLINE_APPEND; then
1824         append $optname "$optval"
1825     else
1826          die_unknown $opt
1827     fi
1828     ;;
1829     esac
1830 done
1831
1832 disabled logging && logfile=/dev/null
1833
1834 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1835 set >> $logfile
1836
1837 test -n "$cross_prefix" && enable cross_compile
1838
1839 if enabled cross_compile; then
1840     test -n "$arch" && test -n "$target_os" ||
1841         die "Must specify target arch and OS when cross-compiling"
1842 fi
1843
1844 set_default arch target_os
1845
1846 ar_default="${cross_prefix}${ar_default}"
1847 cc_default="${cross_prefix}${cc_default}"
1848 nm_default="${cross_prefix}${nm_default}"
1849 pkg_config_default="${cross_prefix}${pkg_config_default}"
1850 ranlib="${cross_prefix}${ranlib}"
1851 strip_default="${cross_prefix}${strip_default}"
1852
1853 sysinclude_default="${sysroot}/usr/include"
1854
1855 set_default cc nm pkg_config strip sysinclude
1856 enabled cross_compile || host_cc_default=$cc
1857 set_default host_cc
1858
1859 exesuf() {
1860     case $1 in
1861         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1862     esac
1863 }
1864
1865 EXESUF=$(exesuf $target_os)
1866 HOSTEXESUF=$(exesuf $host_os)
1867
1868 # set temporary file name
1869 : ${TMPDIR:=$TEMPDIR}
1870 : ${TMPDIR:=$TMP}
1871 : ${TMPDIR:=/tmp}
1872
1873 if ! check_cmd mktemp -u XXXXXX; then
1874     # simple replacement for missing mktemp
1875     # NOT SAFE FOR GENERAL USE
1876     mktemp(){
1877         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1878     }
1879 fi
1880
1881 tmpfile(){
1882     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1883         (set -C; exec > $tmp) 2>/dev/null ||
1884         die "Unable to create temporary file in $TMPDIR."
1885     append TMPFILES $tmp
1886     eval $1=$tmp
1887 }
1888
1889 trap 'rm -f -- $TMPFILES' EXIT
1890
1891 tmpfile TMPC  .c
1892 tmpfile TMPE  $EXESUF
1893 tmpfile TMPH  .h
1894 tmpfile TMPO  .o
1895 tmpfile TMPS  .S
1896 tmpfile TMPV  .ver
1897 tmpfile TMPSH .sh
1898 tmpfile TMPASM .asm
1899
1900 unset -f mktemp
1901
1902 chmod +x $TMPE
1903
1904 # make sure we can execute files in $TMPDIR
1905 cat > $TMPSH 2>> $logfile <<EOF
1906 #! /bin/sh
1907 EOF
1908 chmod +x $TMPSH >> $logfile 2>&1
1909 if ! $TMPSH >> $logfile 2>&1; then
1910     cat <<EOF
1911 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1912 variable to another directory and make sure that it is not mounted noexec.
1913 EOF
1914     die "Sanity test failed."
1915 fi
1916
1917 filter_cflags=echo
1918 filter_cppflags=echo
1919 filter_asflags=echo
1920
1921 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1922     cc_type=llvm_gcc
1923     cc_version=__VERSION__
1924     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1925     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1926     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1927     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1928     speed_cflags='-O3'
1929     size_cflags='-Os'
1930 elif $cc -v 2>&1 | grep -qi ^gcc; then
1931     cc_type=gcc
1932     cc_version=__VERSION__
1933     gcc_version=$($cc --version | head -n1)
1934     gcc_basever=$($cc -dumpversion)
1935     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1936     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1937     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1938     if ! $cc -dumpversion | grep -q '^2\.'; then
1939         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1940         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1941     fi
1942     speed_cflags='-O3'
1943     size_cflags='-Os'
1944 elif $cc --version 2>/dev/null | grep -q Intel; then
1945     cc_type=icc
1946     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1947     cc_ident=$($cc --version | head -n1)
1948     icc_version=$($cc -dumpversion)
1949     CC_DEPFLAGS='-MMD'
1950     AS_DEPFLAGS='-MMD'
1951     speed_cflags='-O3'
1952     size_cflags='-Os'
1953     noopt_cflags='-O1'
1954 elif $cc -v 2>&1 | grep -q xlc; then
1955     cc_type=xlc
1956     cc_version="AV_STRINGIFY(__IBMC__)"
1957     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1958     speed_cflags='-O5'
1959     size_cflags='-O5 -qcompact'
1960 elif $cc -V 2>/dev/null | grep -q Compaq; then
1961     cc_type=ccc
1962     cc_version="AV_STRINGIFY(__DECC_VER)"
1963     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1964     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1965     debuglevel=3
1966     add_ldflags -Wl,-z,now # calls to libots crash without this
1967     speed_cflags='-fast'
1968     size_cflags='-O1'
1969 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1970     test -d "$sysroot" || die "No valid sysroot specified."
1971     cc_type=armcc
1972     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1973     cc_ident=$($cc --vsn | head -n1)
1974     armcc_conf="$PWD/armcc.conf"
1975     $cc --arm_linux_configure                 \
1976         --arm_linux_config_file="$armcc_conf" \
1977         --configure_sysroot="$sysroot"        \
1978         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1979         die "Error creating armcc configuration file."
1980     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1981     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1982     as_default="${cross_prefix}gcc"
1983     CC_DEPFLAGS='-MMD'
1984     AS_DEPFLAGS='-MMD'
1985     speed_cflags='-O3'
1986     size_cflags='-Os'
1987     filter_asflags="filter_out -W${armcc_opt}*"
1988 elif $cc -version 2>/dev/null | grep -q TMS470; then
1989     cc_type=tms470
1990     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1991     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1992     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1993     CC_O='-fr=$(@D)'
1994     as_default="${cross_prefix}gcc"
1995     ld_default="${cross_prefix}gcc"
1996     TMPO=$(basename $TMPC .c).o
1997     append TMPFILES $TMPO
1998     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1999     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2000     AS_DEPFLAGS='-MMD'
2001     speed_cflags='-O3 -mf=5'
2002     size_cflags='-O3 -mf=2'
2003     filter_cflags=tms470_flags
2004     tms470_flags(){
2005         for flag; do
2006             case $flag in
2007                 -march=*|-mcpu=*)
2008                     case "${flag#*=}" in
2009                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2010                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2011                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2012                         armv6*|arm11*)          echo -mv=6   ;;
2013                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2014                                                 echo -mv=5e  ;;
2015                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2016                     esac
2017                     ;;
2018                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2019                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2020                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2021                 -msoft-float)   echo --float_support=vfplib       ;;
2022                 -O[0-3]|-mf=*)  echo $flag                        ;;
2023                 -g)             echo -g -mn                       ;;
2024                 -pds=*)         echo $flag                        ;;
2025             esac
2026         done
2027     }
2028 elif $cc -v 2>&1 | grep -q clang; then
2029     cc_type=clang
2030     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2031         cc_version=__clang_version__ || cc_version=__VERSION__
2032     cc_ident=$($cc --version | head -n1)
2033     CC_DEPFLAGS='-MMD'
2034     AS_DEPFLAGS='-MMD'
2035     speed_cflags='-O3'
2036     size_cflags='-Os'
2037 elif $cc -V 2>&1 | grep -q Sun; then
2038     cc_type=suncc
2039     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2040     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2041     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2042     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2043     speed_cflags='-O5'
2044     size_cflags='-O5 -xspace'
2045     filter_cflags=suncc_flags
2046     suncc_flags(){
2047         for flag; do
2048             case $flag in
2049                 -march=*|-mcpu=*)
2050                     case "${flag#*=}" in
2051                         native)                   echo -xtarget=native       ;;
2052                         v9|niagara)               echo -xarch=sparc          ;;
2053                         ultrasparc)               echo -xarch=sparcvis       ;;
2054                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2055                         i586|pentium)             echo -xchip=pentium        ;;
2056                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2057                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2058                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2059                         pentium4*)          echo -xtarget=pentium4           ;;
2060                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2061                         *-sse3)             echo -xarch=sse3                 ;;
2062                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2063                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2064                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2065                         k8|opteron|athlon64|athlon-fx)
2066                                                   echo -xarch=sse2a          ;;
2067                         athlon*)                  echo -xarch=pentium_proa   ;;
2068                     esac
2069                     ;;
2070                 -std=c99)             echo -xc99              ;;
2071                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2072                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2073                 -W*,*)                echo $flag              ;;
2074                 -f*-*|-W*)                                    ;;
2075                 *)                    echo $flag              ;;
2076             esac
2077         done
2078     }
2079 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2080     cc_type=pathscale
2081     cc_version=__PATHSCALE__
2082     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2083     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2084     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2085     speed_cflags='-O2'
2086     size_cflags='-Os'
2087 elif $cc -v 2>&1 | grep -q Open64; then
2088     cc_type=open64
2089     cc_version=__OPEN64__
2090     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2091     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2092     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2093     speed_cflags='-O2'
2094     size_cflags='-Os'
2095 fi
2096
2097 test -n "$cc_type" && enable $cc_type ||
2098     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2099
2100 : ${as_default:=$cc}
2101 : ${dep_cc_default:=$cc}
2102 : ${ld_default:=$cc}
2103 set_default ar as dep_cc ld
2104
2105 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2106 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2107
2108 add_cflags $extra_cflags
2109 add_asflags $extra_cflags
2110
2111 if test -n "$sysroot"; then
2112     case "$cc_type" in
2113         gcc|llvm_gcc|clang)
2114             add_cppflags --sysroot="$sysroot"
2115             add_ldflags --sysroot="$sysroot"
2116         ;;
2117         tms470)
2118             add_cppflags -I"$sysinclude"
2119             add_ldflags  --sysroot="$sysroot"
2120         ;;
2121     esac
2122 fi
2123
2124 if test "$cpu" = host; then
2125     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2126
2127     case "$cc_type" in
2128         gcc|llvm_gcc)
2129             check_native(){
2130                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2131                 sed -n "/$1=/{
2132                             s/.*$1=\\([^ ]*\\).*/\\1/
2133                             p
2134                             q
2135                         }" $TMPE
2136             }
2137             cpu=$(check_native -march || check_native -mcpu)
2138         ;;
2139     esac
2140
2141     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2142 fi
2143
2144 # Deal with common $arch aliases
2145 case "$arch" in
2146     arm*)
2147         arch="arm"
2148     ;;
2149     mips|mipsel|IP*)
2150         arch="mips"
2151     ;;
2152     mips64*)
2153         arch="mips"
2154         subarch="mips64"
2155     ;;
2156     parisc|hppa)
2157         arch="parisc"
2158     ;;
2159     parisc64|hppa64)
2160         arch="parisc"
2161         subarch="parisc64"
2162     ;;
2163     "Power Macintosh"|ppc|powerpc)
2164         arch="ppc"
2165     ;;
2166     ppc64|powerpc64)
2167         arch="ppc"
2168         subarch="ppc64"
2169     ;;
2170     s390|s390x)
2171         arch="s390"
2172     ;;
2173     sh4|sh)
2174         arch="sh4"
2175     ;;
2176     sun4u|sparc64)
2177         arch="sparc"
2178         subarch="sparc64"
2179     ;;
2180     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2181         arch="x86"
2182     ;;
2183 esac
2184
2185 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2186 enable $arch
2187
2188 # Add processor-specific flags
2189 if test "$cpu" = generic; then
2190     : do nothing
2191 elif enabled ppc; then
2192
2193     case $(tolower $cpu) in
2194         601|ppc601|powerpc601)
2195             cpuflags="-mcpu=601"
2196             disable altivec
2197         ;;
2198         603*|ppc603*|powerpc603*)
2199             cpuflags="-mcpu=603"
2200             disable altivec
2201         ;;
2202         604*|ppc604*|powerpc604*)
2203             cpuflags="-mcpu=604"
2204             disable altivec
2205         ;;
2206         g3|75*|ppc75*|powerpc75*)
2207             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2208             disable altivec
2209         ;;
2210         g4|745*|ppc745*|powerpc745*)
2211             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2212         ;;
2213         74*|ppc74*|powerpc74*)
2214             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2215         ;;
2216         g5|970|ppc970|powerpc970|power4*)
2217             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2218         ;;
2219         cell)
2220             cpuflags="-mcpu=cell"
2221             enable ldbrx
2222         ;;
2223         e500v2)
2224             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2225             disable altivec
2226         ;;
2227         e500)
2228             cpuflags="-mcpu=8540 -mhard-float"
2229             disable altivec
2230         ;;
2231     esac
2232
2233 elif enabled x86; then
2234
2235     case $cpu in
2236         i[345]86|pentium)
2237             cpuflags="-march=$cpu"
2238             disable mmx
2239         ;;
2240         # targets that do NOT support conditional mov (cmov)
2241         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2242             cpuflags="-march=$cpu"
2243             disable cmov
2244         ;;
2245         # targets that do support conditional mov (cmov)
2246         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2247             cpuflags="-march=$cpu"
2248             enable cmov
2249             enable fast_cmov
2250         ;;
2251         # targets that do support conditional mov but on which it's slow
2252         pentium4|pentium4m|prescott|nocona)
2253             cpuflags="-march=$cpu"
2254             enable cmov
2255             disable fast_cmov
2256         ;;
2257     esac
2258
2259 elif enabled sparc; then
2260
2261     case $cpu in
2262         niagara)
2263             cpuflags="-mcpu=$cpu"
2264             disable vis
2265         ;;
2266         sparc64)
2267             cpuflags="-mcpu=v9"
2268         ;;
2269     esac
2270
2271 elif enabled arm; then
2272
2273     case $cpu in
2274         armv*)
2275             cpuflags="-march=$cpu"
2276             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2277         ;;
2278         *)
2279             cpuflags="-mcpu=$cpu"
2280             case $cpu in
2281                 cortex-a*)                               subarch=armv7a  ;;
2282                 cortex-r*)                               subarch=armv7r  ;;
2283                 cortex-m*)                               subarch=armv7m  ;;
2284                 arm11*)                                  subarch=armv6   ;;
2285                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2286                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2287             esac
2288         ;;
2289     esac
2290
2291 elif enabled alpha; then
2292
2293     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2294
2295 elif enabled bfin; then
2296
2297     cpuflags="-mcpu=$cpu"
2298
2299 elif enabled mips; then
2300
2301     cpuflags="-march=$cpu"
2302
2303 elif enabled avr32; then
2304
2305     case $cpu in
2306         ap7[02]0[0-2])
2307             subarch="avr32_ap"
2308             cpuflags="-mpart=$cpu"
2309         ;;
2310         ap)
2311             subarch="avr32_ap"
2312             cpuflags="-march=$cpu"
2313         ;;
2314         uc3[ab]*)
2315             subarch="avr32_uc"
2316             cpuflags="-mcpu=$cpu"
2317         ;;
2318         uc)
2319             subarch="avr32_uc"
2320             cpuflags="-march=$cpu"
2321         ;;
2322     esac
2323
2324 fi
2325
2326 add_cflags $cpuflags
2327 add_asflags $cpuflags
2328
2329 # compiler sanity check
2330 check_exec <<EOF
2331 int main(void){ return 0; }
2332 EOF
2333 if test "$?" != 0; then
2334     echo "$cc is unable to create an executable file."
2335     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2336         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2337         echo "Only do this if you know what cross compiling means."
2338     fi
2339     die "C compiler test failed."
2340 fi
2341
2342 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2343 check_cflags -std=c99
2344 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2345 #include <stdlib.h>
2346 EOF
2347 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2348 #include <stdlib.h>
2349 EOF
2350
2351 check_host_cflags -std=c99
2352
2353 case "$arch" in
2354     alpha|ia64|mips|parisc|sparc)
2355         spic=$shared
2356     ;;
2357     x86)
2358         subarch="x86_32"
2359         check_cc <<EOF && subarch="x86_64"
2360         int test[(int)sizeof(char*) - 7];
2361 EOF
2362         if test "$subarch" = "x86_64"; then
2363             spic=$shared
2364         fi
2365     ;;
2366 esac
2367
2368 enable $subarch
2369 enabled spic && enable pic
2370
2371 # OS specific
2372 case $target_os in
2373     haiku)
2374         prefix_default="/boot/common"
2375         network_extralibs="-lnetwork"
2376         host_libs=
2377         ;;
2378     sunos)
2379         FFSERVERLDFLAGS=""
2380         SHFLAGS='-shared -Wl,-h,$$(@F)'
2381         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2382         network_extralibs="-lsocket -lnsl"
2383         add_cppflags -D__EXTENSIONS__
2384         nm_opts='-P -g'
2385         ;;
2386     netbsd)
2387         disable symver
2388         oss_indev_extralibs="-lossaudio"
2389         oss_outdev_extralibs="-lossaudio"
2390         add_cppflags -D_XOPEN_SOURCE=600
2391         ;;
2392     openbsd)
2393         enable malloc_aligned
2394         # On OpenBSD 4.5. the compiler does not use PIC unless
2395         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2396         # however the generated executable will not do anything
2397         # (simply quits with exit-code 1, no crash, no output).
2398         # Thus explicitly enable PIC here.
2399         enable pic
2400         disable symver
2401         SHFLAGS='-shared'
2402         oss_indev_extralibs="-lossaudio"
2403         oss_outdev_extralibs="-lossaudio"
2404         ;;
2405     dragonfly)
2406         enable malloc_aligned
2407         disable symver
2408         ;;
2409     freebsd)
2410         enable malloc_aligned
2411         ;;
2412     bsd/os)
2413         add_extralibs -lpoll -lgnugetopt
2414         strip="strip -d"
2415         ;;
2416     darwin)
2417         enable malloc_aligned
2418         gas="gas-preprocessor.pl $cc"
2419         enabled ppc && add_asflags -force_cpusubtype_ALL
2420         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2421         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2422         strip="${strip} -x"
2423         add_ldflags -Wl,-dynamic,-search_paths_first
2424         SLIBSUF=".dylib"
2425         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2426         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2427         FFSERVERLDFLAGS=-Wl,-bind_at_load
2428         objformat="macho"
2429         enabled x86_64 && objformat="macho64"
2430         enabled_any pic shared ||
2431             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2432         ;;
2433     mingw32*)
2434         if test $target_os = "mingw32ce"; then
2435             disable network
2436         else
2437             target_os=mingw32
2438         fi
2439         LIBTARGET=i386
2440         if enabled x86_64; then
2441             enable malloc_aligned
2442             LIBTARGET=x64
2443         elif enabled arm; then
2444             LIBTARGET=arm-wince
2445         fi
2446         shlibdir_default="$bindir_default"
2447         SLIBPREF=""
2448         SLIBSUF=".dll"
2449         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2450         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2451         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2452         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2453             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2454             install -d "$(LIBDIR)"; \
2455             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2456         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2457         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'
2458         objformat="win32"
2459         enable dos_paths
2460         check_cflags -fno-common
2461         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2462                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2463                 die "ERROR: MinGW runtime version must be >= 3.15."
2464         add_cppflags -U__STRICT_ANSI__
2465         ;;
2466     cygwin*)
2467         target_os=cygwin
2468         shlibdir_default="$bindir_default"
2469         SLIBPREF="cyg"
2470         SLIBSUF=".dll"
2471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2473         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2474         objformat="win32"
2475         enable dos_paths
2476         check_cflags -fno-common
2477         ;;
2478     *-dos|freedos|opendos)
2479         network_extralibs="-lsocket"
2480         objformat="coff"
2481         enable dos_paths
2482         ;;
2483     linux)
2484         enable dv1394
2485         ;;
2486     irix*)
2487         target_os=irix
2488         ranlib="echo ignoring ranlib"
2489         ;;
2490     os/2*)
2491         strip="lxlite -CS"
2492         ln_s="cp -f"
2493         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2494         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2495         FFSERVERLDFLAGS=""
2496         LIBSUF="_s.a"
2497         SLIBPREF=""
2498         SLIBSUF=".dll"
2499         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2500         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2501         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2502           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2503           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2504           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2505           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2506           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2507         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2508           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2509         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2510         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2511         enable dos_paths
2512         ;;
2513     gnu/kfreebsd)
2514         ;;
2515     gnu)
2516         ;;
2517     qnx)
2518         add_cppflags -D_QNX_SOURCE
2519         network_extralibs="-lsocket"
2520         ;;
2521     symbian)
2522         SLIBSUF=".dll"
2523         enable dos_paths
2524         add_cflags --include=$sysinclude/gcce/gcce.h
2525         ;;
2526     none)
2527         ;;
2528     *)
2529         die "Unknown OS '$target_os'."
2530         ;;
2531 esac
2532
2533 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2534
2535 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2536
2537 set_default $PATHS_LIST
2538
2539 # we need to build at least one lib type
2540 if ! enabled_any static shared; then
2541     cat <<EOF
2542 At least one library type must be built.
2543 Specify --enable-static to build the static libraries or --enable-shared to
2544 build the shared libraries as well. To only build the shared libraries specify
2545 --disable-static in addition to --enable-shared.
2546 EOF
2547     exit 1;
2548 fi
2549
2550 disabled static && LIBNAME=""
2551
2552 die_license_disabled() {
2553     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2554 }
2555
2556 die_license_disabled gpl libx264
2557 die_license_disabled gpl libxavs
2558 die_license_disabled gpl libxvid
2559 die_license_disabled gpl postproc
2560 die_license_disabled gpl x11grab
2561
2562 die_license_disabled nonfree libfaac
2563
2564 die_license_disabled version3 libopencore_amrnb
2565 die_license_disabled version3 libopencore_amrwb
2566 die_license_disabled version3 libvo_aacenc
2567 die_license_disabled version3 libvo_amrwbenc
2568
2569 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2570
2571 disabled optimizations || check_cflags -fomit-frame-pointer
2572
2573 enable_pic() {
2574     enable pic
2575     add_cppflags -DPIC
2576     add_cflags   -fPIC
2577     add_asflags  -fPIC
2578 }
2579
2580 enabled pic && enable_pic
2581
2582 check_cc <<EOF || die "Symbol mangling check failed."
2583 int ff_extern;
2584 EOF
2585 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2586 extern_prefix=${sym%%ff_extern*}
2587
2588 check_cc <<EOF && enable inline_asm
2589 void foo(void) { __asm__ volatile ("" ::); }
2590 EOF
2591
2592 _restrict=
2593 for restrict_keyword in restrict __restrict__ __restrict; do
2594     check_cc <<EOF && _restrict=$restrict_keyword && break
2595 void foo(char * $restrict_keyword p);
2596 EOF
2597 done
2598
2599 check_cc <<EOF && enable attribute_packed
2600 struct { int x; } __attribute__((packed)) x;
2601 EOF
2602
2603 check_cc <<EOF && enable attribute_may_alias
2604 union { int x; } __attribute__((may_alias)) x;
2605 EOF
2606
2607 check_cc <<EOF || die "endian test failed"
2608 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2609 EOF
2610 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2611
2612 if enabled alpha; then
2613
2614     check_cflags -mieee
2615
2616 elif enabled arm; then
2617
2618     check_cflags -marm
2619     nogas=die
2620
2621     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2622         enable vfp_args
2623     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2624         case "${cross_prefix:-$cc}" in
2625             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2626             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2627 __asm__ (".eabi_attribute 28, 1");
2628 int main(void) { return 0; }
2629 EOF
2630         esac
2631         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2632     fi
2633
2634     # We have to check if pld is a nop and disable it.
2635     check_asm pld '"pld [r0]"'
2636
2637     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2638     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2639     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2640     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2641     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2642     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2643
2644     enabled_all armv6t2 shared !pic && enable_pic
2645
2646 elif enabled mips; then
2647
2648     check_asm loongson '"dmult.g $1, $2, $3"'
2649     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2650
2651 elif enabled ppc; then
2652
2653     enable local_aligned_8 local_aligned_16
2654
2655     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2656     check_asm ibm_asm   '"add 0, 0, 0"'
2657     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2658     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2659
2660     # AltiVec flags: The FSF version of GCC differs from the Apple version
2661     if enabled altivec; then
2662         nogas=warn
2663         check_cflags -maltivec -mabi=altivec &&
2664         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2665         check_cflags -faltivec
2666
2667         # check if our compiler supports Motorola AltiVec C API
2668         check_cc <<EOF || disable altivec
2669 $inc_altivec_h
2670 int main(void) {
2671     vector signed int v1, v2, v3;
2672     v1 = vec_add(v2,v3);
2673     return 0;
2674 }
2675 EOF
2676
2677         # check if our compiler supports braces for vector declarations
2678         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2679 $inc_altivec_h
2680 int main (void) { (vector int) {1}; return 0; }
2681 EOF
2682     fi
2683
2684 elif enabled sparc; then
2685
2686     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2687         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2688
2689 elif enabled x86; then
2690
2691     enable local_aligned_8 local_aligned_16
2692
2693     # check whether EBP is available on x86
2694     # As 'i' is stored on the stack, this program will crash
2695     # if the base pointer is used to access it because the
2696     # base pointer is cleared in the inline assembly code.
2697     check_exec_crash <<EOF && enable ebp_available
2698     volatile int i=0;
2699     __asm__ volatile (
2700         "xorl %%ebp, %%ebp"
2701     ::: "%ebp");
2702     return i;
2703 EOF
2704
2705     # check whether EBX is available on x86
2706     check_asm ebx_available '""::"b"(0)' &&
2707         check_asm ebx_available '"":::"%ebx"'
2708
2709     # check whether xmm clobbers are supported
2710     check_asm xmm_clobbers '"":::"%xmm0"'
2711
2712     # check whether more than 10 operands are supported
2713     check_cc <<EOF && enable ten_operands
2714 int main(void) {
2715     int x=0;
2716     __asm__ volatile(
2717         ""
2718         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2719     );
2720     return 0;
2721 }
2722 EOF
2723
2724     # check whether binutils is new enough to compile SSSE3/MMX2
2725     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2726     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2727
2728     check_asm bswap '"bswap %%eax" ::: "%eax"'
2729
2730     if ! disabled_any asm mmx yasm; then
2731         if check_cmd $yasmexe --version; then
2732             enabled x86_64 && yasm_extra="-m amd64"
2733             yasm_debug="-g dwarf2"
2734         elif check_cmd nasm -v; then
2735             yasmexe=nasm
2736             yasm_debug="-g -F dwarf"
2737             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2738         fi
2739
2740         YASMFLAGS="-f $objformat $yasm_extra"
2741         enabled pic               && append YASMFLAGS "-DPIC"
2742         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2743         case "$objformat" in
2744             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2745         esac
2746
2747         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2748             die "yasm not found, use --disable-yasm for a crippled build"
2749         check_yasm "vpaddw xmm0, xmm0, xmm0" || disable avx
2750     fi
2751
2752     case "$cpu" in
2753         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2754             disable fast_clz
2755         ;;
2756     esac
2757
2758 fi
2759
2760 if enabled asm; then
2761     as=${gas:=$as}
2762     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2763         $nogas "GNU assembler not found, install gas-preprocessor"
2764 fi
2765
2766 check_ldflags -Wl,--as-needed
2767
2768 if check_func dlopen; then
2769     ldl=
2770 elif check_func dlopen -ldl; then
2771     ldl=-ldl
2772 fi
2773
2774 if enabled network; then
2775     check_type "sys/types.h sys/socket.h" socklen_t
2776     check_type netdb.h "struct addrinfo"
2777     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2778     check_type netinet/in.h "struct sockaddr_in6"
2779     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2780     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2781     # Prefer arpa/inet.h over winsock2
2782     if check_header arpa/inet.h ; then
2783         check_func closesocket
2784     elif check_header winsock2.h ; then
2785         check_func_headers winsock2.h closesocket -lws2 && \
2786             network_extralibs="-lws2" || \
2787         { check_func_headers winsock2.h closesocket -lws2_32 && \
2788             network_extralibs="-lws2_32"; }
2789         check_type ws2tcpip.h socklen_t
2790         check_type ws2tcpip.h "struct addrinfo"
2791         check_type ws2tcpip.h "struct ipv6_mreq"
2792         check_type ws2tcpip.h "struct sockaddr_in6"
2793         check_type ws2tcpip.h "struct sockaddr_storage"
2794         check_struct winsock2.h "struct sockaddr" sa_len
2795     else
2796         disable network
2797     fi
2798 fi
2799
2800 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2801 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2802
2803 check_func  fcntl
2804 check_func  fork
2805 check_func  getaddrinfo $network_extralibs
2806 check_func  gethrtime
2807 check_func  getrusage
2808 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2809 check_func  inet_aton $network_extralibs
2810 check_func  isatty
2811 check_func  localtime_r
2812 check_func  ${malloc_prefix}memalign            && enable memalign
2813 check_func  mkstemp
2814 check_func  mmap
2815 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2816 check_func  setrlimit
2817 check_func  strerror_r
2818 check_func  strtok_r
2819 check_func_headers conio.h kbhit
2820 check_func_headers io.h setmode
2821 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2822 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2823 check_func_headers windows.h GetProcessTimes
2824 check_func_headers windows.h MapViewOfFile
2825 check_func_headers windows.h VirtualAlloc
2826
2827 check_header dlfcn.h
2828 check_header dxva2api.h
2829 check_header libcrystalhd/libcrystalhd_if.h
2830 check_header malloc.h
2831 check_header poll.h
2832 check_header sys/mman.h
2833 check_header sys/resource.h
2834 check_header sys/select.h
2835 check_header termios.h
2836 check_header vdpau/vdpau.h
2837 check_header vdpau/vdpau_x11.h
2838 check_header X11/extensions/XvMClib.h
2839
2840 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2841
2842 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2843      enabled_any $need_memalign ; then
2844     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2845 fi
2846
2847 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2848 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2849
2850 # check for some common methods of building with pthread support
2851 # do this before the optional library checks as some of them require pthreads
2852 if ! disabled pthreads && ! enabled w32threads; then
2853     enable pthreads
2854     if check_func pthread_create; then
2855         :
2856     elif check_func pthread_create -pthread; then
2857         add_cflags -pthread
2858         add_extralibs -pthread
2859     elif check_func pthread_create -pthreads; then
2860         add_cflags -pthreads
2861         add_extralibs -pthreads
2862     elif check_func pthread_create -lpthreadGC2; then
2863         add_extralibs -lpthreadGC2
2864     elif ! check_lib pthread.h pthread_create -lpthread; then
2865         disable pthreads
2866     fi
2867 fi
2868
2869 for thread in $THREADS_LIST; do
2870     if enabled $thread; then
2871         test -n "$thread_type" &&
2872             die "ERROR: Only one thread type must be selected." ||
2873             thread_type="$thread"
2874     fi
2875 done
2876
2877 check_lib math.h sin -lm && LIBM="-lm"
2878 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2879 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2880
2881 check_mathfunc exp2
2882 check_mathfunc exp2f
2883 check_mathfunc llrint
2884 check_mathfunc llrintf
2885 check_mathfunc log2
2886 check_mathfunc log2f
2887 check_mathfunc lrint
2888 check_mathfunc lrintf
2889 check_mathfunc round
2890 check_mathfunc roundf
2891 check_mathfunc trunc
2892 check_mathfunc truncf
2893
2894 # these are off by default, so fail if requested and not available
2895 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2896 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2897 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2898 enabled libdirac   && require_pkg_config dirac                          \
2899     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2900     "dirac_decoder_init dirac_encoder_init"
2901 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2902 enabled libfreetype && add_cflags $(pkg-config --cflags freetype2) && require libfreetype ft2build.h FT_Init_FreeType -lfreetype
2903 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2904 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2905 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2906 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2907 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2908 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2909 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2910 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2911 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2912 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2913 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2914 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2915 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2916 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2917 enabled libvpx     && {
2918     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2919                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2920     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2921                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2922 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2923                       { check_cpp_condition x264.h "X264_BUILD >= 99" ||
2924                         die "ERROR: libx264 version must be >= 0.99."; }
2925 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2926 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2927 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2928
2929 # libdc1394 check
2930 if enabled libdc1394; then
2931     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2932         enable libdc1394_2; } ||
2933     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2934         enable libdc1394_1; } ||
2935     die "ERROR: No version of libdc1394 found "
2936 fi
2937
2938 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2939     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2940     enable sdl &&
2941     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2942 fi
2943
2944 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2945
2946 check_header linux/fb.h
2947 check_header linux/videodev.h
2948 check_header linux/videodev2.h
2949 check_header sys/videoio.h
2950
2951 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2952 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2953 # w32api 3.12 had it defined wrong
2954 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2955
2956 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2957 { check_header dev/bktr/ioctl_meteor.h &&
2958   check_header dev/bktr/ioctl_bt848.h; } ||
2959 { check_header machine/ioctl_meteor.h &&
2960   check_header machine/ioctl_bt848.h; } ||
2961 { check_header dev/video/meteor/ioctl_meteor.h &&
2962   check_header dev/video/bktr/ioctl_bt848.h; } ||
2963 check_header dev/ic/bt8xx.h
2964
2965 check_header sndio.h
2966 if check_struct sys/soundcard.h audio_buf_info bytes; then
2967     enable_safe sys/soundcard.h
2968 else
2969     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2970     #include <sys/soundcard.h>
2971     audio_buf_info abc;
2972 EOF
2973 fi
2974 check_header soundcard.h
2975
2976 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2977
2978 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
2979
2980 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2981
2982 enabled x11grab                         &&
2983 check_header X11/Xlib.h                 &&
2984 check_header X11/extensions/XShm.h      &&
2985 check_header X11/extensions/Xfixes.h    &&
2986 check_func XOpenDisplay -lX11           &&
2987 check_func XShmCreateImage -lX11 -lXext &&
2988 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2989
2990 if ! disabled vaapi; then
2991     check_lib va/va.h vaInitialize -lva && {
2992         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
2993         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
2994     } || disable vaapi
2995 fi
2996
2997 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2998 check_cpp_condition \
2999     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3000     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3001       disable vdpau; }
3002 fi
3003
3004 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3005
3006 # add some useful compiler flags if supported
3007 check_cflags -Wdeclaration-after-statement
3008 check_cflags -Wall
3009 check_cflags -Wno-parentheses
3010 check_cflags -Wno-switch
3011 check_cflags -Wdisabled-optimization
3012 check_cflags -Wpointer-arith
3013 check_cflags -Wredundant-decls
3014 check_cflags -Wno-pointer-sign
3015 check_cflags -Wcast-qual
3016 check_cflags -Wwrite-strings
3017 check_cflags -Wtype-limits
3018 check_cflags -Wundef
3019 check_cflags -Wmissing-prototypes
3020 check_cflags -Wno-pointer-to-int-cast
3021 enabled extra_warnings && check_cflags -Winline
3022
3023 # add some linker flags
3024 check_ldflags -Wl,--warn-common
3025 check_ldflags '-Wl,-rpath-link,\$(BUILD_ROOT)/libpostproc -Wl,-rpath-link,\$(BUILD_ROOT)/libswscale -Wl,-rpath-link,\$(BUILD_ROOT)/libavfilter -Wl,-rpath-link,\$(BUILD_ROOT)/libavdevice -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
3026 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3027
3028 echo "X{};" > $TMPV
3029 if test_ldflags -Wl,--version-script,$TMPV; then
3030     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3031     check_cc <<EOF && enable symver_asm_label
3032 void ff_foo(void) __asm__ ("av_foo@VERSION");
3033 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3034 EOF
3035     check_cc <<EOF && enable symver_gnu_asm
3036 __asm__(".symver ff_foo,av_foo@VERSION");
3037 void ff_foo(void) {}
3038 EOF
3039 fi
3040
3041 if enabled small; then
3042     add_cflags $size_cflags
3043     optimizations="small"
3044 elif enabled optimizations; then
3045     add_cflags $speed_cflags
3046 else
3047     add_cflags $noopt_cflags
3048 fi
3049 check_cflags -fno-math-errno
3050 check_cflags -fno-signed-zeros
3051
3052 if enabled icc; then
3053     # Just warnings, no remarks
3054     check_cflags -w1
3055     # -wd: Disable following warnings
3056     # 144, 167, 556: -Wno-pointer-sign
3057     # 1292: attribute "foo" ignored
3058     # 10006: ignoring unknown option -fno-signed-zeros
3059     # 10148: ignoring unknown option -Wno-parentheses
3060     # 10156: ignoring option '-W'; no argument required
3061     check_cflags -wd144,167,556,1292,10006,10148,10156
3062     # 11030: Warning unknown option --as-needed
3063     # 10156: ignoring option '-export'; no argument required
3064     check_ldflags -wd10156,11030
3065     # Allow to compile with optimizations
3066     check_ldflags -march=$cpu
3067     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3068     enable ebp_available
3069     if enabled x86_32; then
3070         test ${icc_version%%.*} -ge 11 && \
3071             check_cflags -falign-stack=maintain-16-byte || \
3072             disable aligned_stack
3073     fi
3074 elif enabled ccc; then
3075     # disable some annoying warnings
3076     add_cflags -msg_disable cvtu32to64
3077     add_cflags -msg_disable embedcomment
3078     add_cflags -msg_disable needconstext
3079     add_cflags -msg_disable nomainieee
3080     add_cflags -msg_disable ptrmismatch1
3081     add_cflags -msg_disable unreachcode
3082 elif enabled gcc; then
3083     check_cflags -fno-tree-vectorize
3084     check_cflags -Werror=implicit-function-declaration
3085     check_cflags -Werror=missing-prototypes
3086 elif enabled llvm_gcc; then
3087     check_cflags -mllvm -stack-alignment=16
3088 elif enabled clang; then
3089     check_cflags -mllvm -stack-alignment=16
3090     check_cflags -Qunused-arguments
3091 elif enabled armcc; then
3092     # 2523: use of inline assembler is deprecated
3093     add_cflags -W${armcc_opt},--diag_suppress=2523
3094     add_cflags -W${armcc_opt},--diag_suppress=1207
3095     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3096     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3097 elif enabled tms470; then
3098     add_cflags -pds=824 -pds=837
3099 elif enabled pathscale; then
3100     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3101 fi
3102
3103 enabled_any $THREADS_LIST      && enable threads
3104
3105 check_deps $CONFIG_LIST       \
3106            $CONFIG_EXTRA      \
3107            $HAVE_LIST         \
3108            $DECODER_LIST      \
3109            $ENCODER_LIST      \
3110            $HWACCEL_LIST      \
3111            $PARSER_LIST       \
3112            $BSF_LIST          \
3113            $DEMUXER_LIST      \
3114            $MUXER_LIST        \
3115            $FILTER_LIST       \
3116            $INDEV_LIST        \
3117            $OUTDEV_LIST       \
3118            $PROTOCOL_LIST     \
3119            $ACODEC_TESTS      \
3120            $VCODEC_TESTS      \
3121            $LAVF_TESTS        \
3122            $LAVFI_TESTS       \
3123            $SEEK_TESTS        \
3124
3125 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3126
3127 echo "install prefix            $prefix"
3128 echo "source path               $source_path"
3129 echo "C compiler                $cc"
3130 echo "ARCH                      $arch ($cpu)"
3131 if test "$build_suffix" != ""; then
3132     echo "build suffix              $build_suffix"
3133 fi
3134 if test "$extra_version" != ""; then
3135     echo "version string suffix     $extra_version"
3136 fi
3137 echo "big-endian                ${bigendian-no}"
3138 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3139 if enabled x86; then
3140     echo "yasm                      ${yasm-no}"
3141     echo "MMX enabled               ${mmx-no}"
3142     echo "MMX2 enabled              ${mmx2-no}"
3143     echo "3DNow! enabled            ${amd3dnow-no}"
3144     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3145     echo "SSE enabled               ${sse-no}"
3146     echo "SSSE3 enabled             ${ssse3-no}"
3147     echo "CMOV enabled              ${cmov-no}"
3148     echo "CMOV is fast              ${fast_cmov-no}"
3149     echo "EBX available             ${ebx_available-no}"
3150     echo "EBP available             ${ebp_available-no}"
3151     echo "10 operands supported     ${ten_operands-no}"
3152 fi
3153 if enabled arm; then
3154     echo "ARMv5TE enabled           ${armv5te-no}"
3155     echo "ARMv6 enabled             ${armv6-no}"
3156     echo "ARMv6T2 enabled           ${armv6t2-no}"
3157     echo "ARM VFP enabled           ${armvfp-no}"
3158     echo "IWMMXT enabled            ${iwmmxt-no}"
3159     echo "NEON enabled              ${neon-no}"
3160 fi
3161 if enabled mips; then
3162     echo "MMI enabled               ${mmi-no}"
3163 fi
3164 if enabled ppc; then
3165     echo "AltiVec enabled           ${altivec-no}"
3166     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3167     echo "dcbzl available           ${dcbzl-no}"
3168 fi
3169 if enabled sparc; then
3170     echo "VIS enabled               ${vis-no}"
3171 fi
3172 echo "debug symbols             ${debug-no}"
3173 echo "strip symbols             ${stripping-no}"
3174 echo "optimizations             ${optimizations-no}"
3175 echo "static                    ${static-no}"
3176 echo "shared                    ${shared-no}"
3177 echo "postprocessing support    ${postproc-no}"
3178 echo "new filter support        ${avfilter-no}"
3179 echo "network support           ${network-no}"
3180 echo "threading support         ${thread_type-no}"
3181 echo "SDL support               ${sdl-no}"
3182 echo "Sun medialib support      ${mlib-no}"
3183 echo "AVISynth enabled          ${avisynth-no}"
3184 echo "libcelt enabled           ${libcelt-no}"
3185 echo "frei0r enabled            ${frei0r-no}"
3186 echo "libdc1394 support         ${libdc1394-no}"
3187 echo "libdirac enabled          ${libdirac-no}"
3188 echo "libfaac enabled           ${libfaac-no}"
3189 echo "libgsm enabled            ${libgsm-no}"
3190 echo "libmp3lame enabled        ${libmp3lame-no}"
3191 echo "libnut enabled            ${libnut-no}"
3192 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3193 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3194 echo "libopencv support         ${libopencv-no}"
3195 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3196 echo "librtmp enabled           ${librtmp-no}"
3197 echo "libschroedinger enabled   ${libschroedinger-no}"
3198 echo "libspeex enabled          ${libspeex-no}"
3199 echo "libtheora enabled         ${libtheora-no}"
3200 echo "libva enabled             ${vaapi-no}"
3201 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3202 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3203 echo "libvorbis enabled         ${libvorbis-no}"
3204 echo "libvpx enabled            ${libvpx-no}"
3205 echo "libx264 enabled           ${libx264-no}"
3206 echo "libxavs enabled           ${libxavs-no}"
3207 echo "libxvid enabled           ${libxvid-no}"
3208 echo "zlib enabled              ${zlib-no}"
3209 echo "bzlib enabled             ${bzlib-no}"
3210 echo
3211
3212 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3213     echo "Enabled ${type}s:"
3214     eval list=\$$(toupper $type)_LIST
3215     print_enabled '_*' $list | sort | pr -r -3 -t
3216     echo
3217 done
3218
3219 license="LGPL version 2.1 or later"
3220 if enabled nonfree; then
3221     license="nonfree and unredistributable"
3222 elif enabled gplv3; then
3223     license="GPL version 3 or later"
3224 elif enabled lgplv3; then
3225     license="LGPL version 3 or later"
3226 elif enabled gpl; then
3227     license="GPL version 2 or later"
3228 fi
3229
3230 echo "License: $license"
3231
3232 echo "Creating config.mak and config.h..."
3233
3234 # build tree in object directory if source path is different from current one
3235 if enabled source_path_used; then
3236     DIRS="
3237         doc
3238         libavcodec
3239         libavcodec/$arch
3240         libavdevice
3241         libavfilter
3242         libavfilter/$arch
3243         libavfilter/libmpcodecs
3244         libavfilter/libmpcodecs/libvo
3245         libavformat
3246         libavutil
3247         libavutil/$arch
3248         libpostproc
3249         libswscale
3250         libswscale/$arch
3251         tests
3252         tools
3253     "
3254     FILES="
3255         Makefile
3256         common.mak
3257         subdir.mak
3258         doc/texi2pod.pl
3259         libavcodec/Makefile
3260         libavcodec/${arch}/Makefile
3261         libavdevice/Makefile
3262         libavfilter/Makefile
3263         libavfilter/${arch}/Makefile
3264         libavformat/Makefile
3265         libavutil/Makefile
3266         libpostproc/Makefile
3267         libswscale/Makefile
3268     "
3269     map 'mkdir -p $v' $DIRS;
3270     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3271 fi
3272
3273 enabled stripping || strip="echo skipping strip"
3274
3275 config_files="$TMPH config.mak"
3276
3277 cat > config.mak <<EOF
3278 # Automatically generated by configure - do not modify!
3279 ifndef FFMPEG_CONFIG_MAK
3280 FFMPEG_CONFIG_MAK=1
3281 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3282 prefix=$prefix
3283 LIBDIR=\$(DESTDIR)$libdir
3284 SHLIBDIR=\$(DESTDIR)$shlibdir
3285 INCDIR=\$(DESTDIR)$incdir
3286 BINDIR=\$(DESTDIR)$bindir
3287 DATADIR=\$(DESTDIR)$datadir
3288 MANDIR=\$(DESTDIR)$mandir
3289 SRC_PATH="$source_path"
3290 SRC_PATH_BARE=$source_path
3291 BUILD_ROOT="$PWD"
3292 CC_IDENT=$cc_ident
3293 ARCH=$arch
3294 CC=$cc
3295 AS=$as
3296 LD=$ld
3297 DEPCC=$dep_cc
3298 YASM=$yasmexe
3299 YASMDEP=$yasmexe
3300 AR=$ar
3301 RANLIB=$ranlib
3302 CP=cp -p
3303 LN_S=$ln_s
3304 STRIP=$strip
3305 CPPFLAGS=$CPPFLAGS
3306 CFLAGS=$CFLAGS
3307 ASFLAGS=$ASFLAGS
3308 CC_O=$CC_O
3309 LDFLAGS=$LDFLAGS
3310 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3311 SHFLAGS=$SHFLAGS
3312 YASMFLAGS=$YASMFLAGS
3313 BUILDSUF=$build_suffix
3314 FULLNAME=$FULLNAME
3315 LIBPREF=$LIBPREF
3316 LIBSUF=$LIBSUF
3317 LIBNAME=$LIBNAME
3318 SLIBPREF=$SLIBPREF
3319 SLIBSUF=$SLIBSUF
3320 EXESUF=$EXESUF
3321 EXTRA_VERSION=$extra_version
3322 DEPFLAGS=$DEPFLAGS
3323 CCDEP=$CCDEP
3324 ASDEP=$ASDEP
3325 CC_DEPFLAGS=$CC_DEPFLAGS
3326 AS_DEPFLAGS=$AS_DEPFLAGS
3327 HOSTCC=$host_cc
3328 HOSTCFLAGS=$host_cflags
3329 HOSTEXESUF=$HOSTEXESUF
3330 HOSTLDFLAGS=$host_ldflags
3331 HOSTLIBS=$host_libs
3332 TARGET_EXEC=$target_exec
3333 TARGET_PATH=$target_path
3334 SDL_LIBS=$sdl_libs
3335 SDL_CFLAGS=$sdl_cflags
3336 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3337 EXTRALIBS=$extralibs
3338 INSTALL=install
3339 LIBTARGET=${LIBTARGET}
3340 SLIBNAME=${SLIBNAME}
3341 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3342 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3343 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3344 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3345 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3346 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3347 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3348 EOF
3349
3350 get_version(){
3351     name=$1
3352     file=$source_path/$2
3353     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3354     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3355     lcname=$(tolower $name)
3356     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3357     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3358 }
3359
3360 get_version LIBSWSCALE  libswscale/swscale.h
3361 get_version LIBPOSTPROC libpostproc/postprocess.h
3362 get_version LIBAVCODEC  libavcodec/version.h
3363 get_version LIBAVDEVICE libavdevice/avdevice.h
3364 get_version LIBAVFORMAT libavformat/version.h
3365 get_version LIBAVUTIL   libavutil/avutil.h
3366 get_version LIBAVFILTER libavfilter/avfilter.h
3367
3368 cat > $TMPH <<EOF
3369 /* Automatically generated by configure - do not modify! */
3370 #ifndef FFMPEG_CONFIG_H
3371 #define FFMPEG_CONFIG_H
3372 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3373 #define FFMPEG_LICENSE "$(c_escape $license)"
3374 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3375 #define CC_TYPE "$cc_type"
3376 #define CC_VERSION $cc_version
3377 #define restrict $_restrict
3378 #define EXTERN_PREFIX "${extern_prefix}"
3379 #define EXTERN_ASM ${extern_prefix}
3380 #define SLIBSUF "$SLIBSUF"
3381 EOF
3382
3383 test -n "$malloc_prefix" &&
3384     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3385
3386 if enabled small || disabled optimizations; then
3387     echo "#undef  av_always_inline"  >> $TMPH
3388     if enabled small; then
3389         echo "#define av_always_inline inline"  >> $TMPH
3390     else
3391         echo "#define av_always_inline av_unused"  >> $TMPH
3392     fi
3393 fi
3394
3395 if enabled yasm; then
3396     append config_files $TMPASM
3397     printf '' >$TMPASM
3398 fi
3399
3400 print_config ARCH_   "$config_files" $ARCH_LIST
3401 print_config HAVE_   "$config_files" $HAVE_LIST
3402 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3403                                      $CONFIG_EXTRA      \
3404                                      $DECODER_LIST      \
3405                                      $ENCODER_LIST      \
3406                                      $HWACCEL_LIST      \
3407                                      $PARSER_LIST       \
3408                                      $BSF_LIST          \
3409                                      $DEMUXER_LIST      \
3410                                      $MUXER_LIST        \
3411                                      $FILTER_LIST       \
3412                                      $PROTOCOL_LIST     \
3413                                      $INDEV_LIST        \
3414                                      $OUTDEV_LIST       \
3415
3416 cat >>config.mak <<EOF
3417 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3418 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3419 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3420 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3421 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3422 EOF
3423
3424 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3425 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3426
3427 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3428 cp_if_changed $TMPH config.h
3429 touch .config
3430
3431 enabled yasm && cp_if_changed $TMPASM config.asm
3432
3433 cat > $TMPH <<EOF
3434 /* Generated by ffconf */
3435 #ifndef AVUTIL_AVCONFIG_H
3436 #define AVUTIL_AVCONFIG_H
3437 EOF
3438
3439 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3440
3441 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3442
3443 cp_if_changed $TMPH libavutil/avconfig.h
3444
3445 test -n "$WARNINGS" && printf "\n$WARNINGS"
3446
3447 # build pkg-config files
3448
3449 pkgconfig_generate(){
3450 name=$1
3451 shortname=${name#lib}${build_suffix}
3452 comment=$2
3453 version=$3
3454 libs=$4
3455 requires=$5
3456 enabled ${name#lib} || return 0
3457 cat <<EOF > $name/$name.pc
3458 prefix=$prefix
3459 exec_prefix=\${prefix}
3460 libdir=$libdir
3461 includedir=$incdir
3462
3463 Name: $name
3464 Description: $comment
3465 Version: $version
3466 Requires: $(enabled shared || echo $requires)
3467 Requires.private: $(enabled shared && echo $requires)
3468 Conflicts:
3469 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3470 Libs.private: $(enabled shared && echo $libs)
3471 Cflags: -I\${includedir}
3472 EOF
3473 cat <<EOF > $name/$name-uninstalled.pc
3474 prefix=
3475 exec_prefix=
3476 libdir=\${pcfiledir}
3477 includedir=${source_path}
3478
3479 Name: $name
3480 Description: $comment
3481 Version: $version
3482 Requires: $requires
3483 Conflicts:
3484 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3485 Cflags: -I\${includedir}
3486 EOF
3487 }
3488
3489 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3490 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3491 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3492 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3493 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3494 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3495 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"