build: conditionally compile x86 H.264 chroma optimizations
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-ffmpeg         disable ffmpeg build
84   --disable-avconv         disable avconv build
85   --disable-avplay         disable avplay build
86   --disable-avprobe        disable avprobe build
87   --disable-avserver       disable avserver build
88   --disable-avdevice       disable libavdevice build
89   --disable-avcodec        disable libavcodec build
90   --disable-avformat       disable libavformat build
91   --disable-swscale        disable libswscale build
92   --disable-postproc       disable libpostproc build
93   --disable-avfilter       disable video filter support [no]
94   --disable-pthreads       disable pthreads [auto]
95   --disable-w32threads     disable Win32 threads [auto]
96   --enable-x11grab         enable X11 grabbing [no]
97   --disable-network        disable network support [no]
98   --enable-gray            enable full grayscale support (slower color)
99   --disable-swscale-alpha  disable alpha channel support in swscale
100   --disable-fastdiv        disable table-based division
101   --enable-small           optimize for size instead of speed
102   --disable-aandct         disable AAN DCT code
103   --disable-dct            disable DCT code
104   --disable-fft            disable FFT code
105   --disable-golomb         disable Golomb code
106   --disable-huffman        disable Huffman code
107   --disable-lpc            disable LPC code
108   --disable-mdct           disable MDCT code
109   --disable-rdft           disable RDFT code
110   --enable-vaapi           enable VAAPI code
111   --enable-vda             enable VDA code
112   --enable-vdpau           enable VDPAU code
113   --disable-dxva2          disable DXVA2 code
114   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
115   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
116   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
117   --disable-everything     disable all components listed below
118   --disable-encoder=NAME   disable encoder NAME
119   --enable-encoder=NAME    enable encoder NAME
120   --disable-encoders       disable all encoders
121   --disable-decoder=NAME   disable decoder NAME
122   --enable-decoder=NAME    enable decoder NAME
123   --disable-decoders       disable all decoders
124   --disable-hwaccel=NAME   disable hwaccel NAME
125   --enable-hwaccel=NAME    enable hwaccel NAME
126   --disable-hwaccels       disable all hwaccels
127   --disable-muxer=NAME     disable muxer NAME
128   --enable-muxer=NAME      enable muxer NAME
129   --disable-muxers         disable all muxers
130   --disable-demuxer=NAME   disable demuxer NAME
131   --enable-demuxer=NAME    enable demuxer NAME
132   --disable-demuxers       disable all demuxers
133   --enable-parser=NAME     enable parser NAME
134   --disable-parser=NAME    disable parser NAME
135   --disable-parsers        disable all parsers
136   --enable-bsf=NAME        enable bitstream filter NAME
137   --disable-bsf=NAME       disable bitstream filter NAME
138   --disable-bsfs           disable all bitstream filters
139   --enable-protocol=NAME   enable protocol NAME
140   --disable-protocol=NAME  disable protocol NAME
141   --disable-protocols      disable all protocols
142   --disable-indev=NAME     disable input device NAME
143   --disable-outdev=NAME    disable output device NAME
144   --disable-indevs         disable input devices
145   --disable-outdevs        disable output devices
146   --disable-devices        disable all devices
147   --enable-filter=NAME     enable filter NAME
148   --disable-filter=NAME    disable filter NAME
149   --disable-filters        disable all filters
150   --list-decoders          show all available decoders
151   --list-encoders          show all available encoders
152   --list-hwaccels          show all available hardware accelerators
153   --list-muxers            show all available muxers
154   --list-demuxers          show all available demuxers
155   --list-parsers           show all available parsers
156   --list-protocols         show all available protocols
157   --list-bsfs              show all available bitstream filters
158   --list-indevs            show all available input devices
159   --list-outdevs           show all available output devices
160   --list-filters           show all available filters
161
162 External library support:
163   --enable-avisynth        enable reading of AVISynth script files [no]
164   --enable-bzlib           enable bzlib [autodetect]
165   --enable-frei0r          enable frei0r video filtering
166   --enable-gnutls          enable gnutls [no]
167   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
168   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
169   --enable-libopencv       enable video filtering via libopencv [no]
170   --enable-libcdio         enable audio CD grabbing with libcdio
171   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
172                            and libraw1394 [no]
173   --enable-libdirac        enable Dirac support via libdirac [no]
174   --enable-libfaac         enable FAAC support via libfaac [no]
175   --enable-libfreetype     enable libfreetype [no]
176   --enable-libgsm          enable GSM support via libgsm [no]
177   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
178   --enable-libnut          enable NUT (de)muxing via libnut,
179                            native (de)muxer exists [no]
180   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
181   --enable-libpulse        enable Pulseaudio input via libpulse [no]
182   --enable-librtmp         enable RTMP[E] support via librtmp [no]
183   --enable-libschroedinger enable Dirac support via libschroedinger [no]
184   --enable-libspeex        enable Speex support via libspeex [no]
185   --enable-libtheora       enable Theora encoding via libtheora [no]
186   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
187   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
188   --enable-libvorbis       enable Vorbis encoding via libvorbis,
189                            native implementation exists [no]
190   --enable-libvpx          enable VP8 support via libvpx [no]
191   --enable-libx264         enable H.264 encoding via x264 [no]
192   --enable-libxavs         enable AVS encoding via xavs [no]
193   --enable-libxvid         enable Xvid encoding via xvidcore,
194                            native MPEG-4/Xvid encoder exists [no]
195   --enable-mlib            enable Sun medialib [no]
196   --enable-openssl         enable openssl [no]
197   --enable-zlib            enable zlib [autodetect]
198
199 Advanced options (experts only):
200   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
201   --enable-cross-compile   assume a cross-compiler is used
202   --sysroot=PATH           root of cross-build tree
203   --sysinclude=PATH        location of cross-build system headers
204   --target-os=OS           compiler targets OS [$target_os]
205   --target-exec=CMD        command to run executables on target
206   --target-path=DIR        path to view of build directory on target
207   --nm=NM                  use nm tool
208   --ar=AR                  use archive tool AR [$ar_default]
209   --as=AS                  use assembler AS [$as_default]
210   --cc=CC                  use C compiler CC [$cc_default]
211   --ld=LD                  use linker LD
212   --host-cc=HOSTCC         use host C compiler HOSTCC
213   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
214   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
215   --host-libs=HLIBS        use libs HLIBS when linking for host
216   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
217   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
218   --extra-libs=ELIBS       add ELIBS [$ELIBS]
219   --extra-version=STRING   version string suffix []
220   --build-suffix=SUFFIX    library name suffix []
221   --arch=ARCH              select architecture [$arch]
222   --cpu=CPU                select the minimum required CPU (affects
223                            instruction selection, may crash on older CPUs)
224   --disable-asm            disable all assembler optimizations
225   --disable-altivec        disable AltiVec optimizations
226   --disable-amd3dnow       disable 3DNow! optimizations
227   --disable-amd3dnowext    disable 3DNow! extended optimizations
228   --disable-mmx            disable MMX optimizations
229   --disable-mmx2           disable MMX2 optimizations
230   --disable-sse            disable SSE optimizations
231   --disable-ssse3          disable SSSE3 optimizations
232   --disable-avx            disable AVX optimizations
233   --disable-armv5te        disable armv5te optimizations
234   --disable-armv6          disable armv6 optimizations
235   --disable-armv6t2        disable armv6t2 optimizations
236   --disable-armvfp         disable ARM VFP optimizations
237   --disable-iwmmxt         disable iwmmxt optimizations
238   --disable-mmi            disable MMI optimizations
239   --disable-neon           disable neon optimizations
240   --disable-vis            disable VIS optimizations
241   --disable-yasm           disable use of yasm assembler
242   --enable-pic             build position-independent code
243   --malloc-prefix=PFX      prefix malloc and related names with PFX
244   --enable-sram            allow use of on-chip SRAM
245   --disable-symver         disable symbol versioning
246   --optflags               override optimization-related compiler flags
247
248 Developer options (useful when working on Libav itself):
249   --disable-debug          disable debugging symbols
250   --enable-debug=LEVEL     set the debug level [$debuglevel]
251   --disable-optimizations  disable compiler optimizations
252   --enable-extra-warnings  enable more compiler warnings
253   --samples=PATH           location of test samples for FATE, if not set use
254                            \$FATE_SAMPLES at make invocation time.
255
256 NOTE: Object files are built at the place where configure is launched.
257 EOF
258   exit 0
259 }
260
261 quotes='""'
262
263 log(){
264     echo "$@" >> $logfile
265 }
266
267 log_file(){
268     log BEGIN $1
269     pr -n -t $1 >> $logfile
270     log END $1
271 }
272
273 echolog(){
274     log "$@"
275     echo "$@"
276 }
277
278 warn(){
279     log "WARNING: $*"
280     WARNINGS="${WARNINGS}WARNING: $*\n"
281 }
282
283 die(){
284     echolog "$@"
285     cat <<EOF
286
287 If you think configure made a mistake, make sure you are using the latest
288 version from Git.  If the latest version fails, report the problem to the
289 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
290 EOF
291     if disabled logging; then
292         cat <<EOF
293 Rerun configure with logging enabled (do not use --disable-logging), and
294 include the log this produces with your report.
295 EOF
296     else
297 cat <<EOF
298 Include the log file "$logfile" produced by configure as this will help
299 solving the problem.
300 EOF
301     fi
302     exit 1
303 }
304
305 # Avoid locale weirdness, besides we really just want to translate ASCII.
306 toupper(){
307     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
308 }
309
310 tolower(){
311     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
312 }
313
314 c_escape(){
315     echo "$*" | sed 's/["\\]/\\\0/g'
316 }
317
318 sh_quote(){
319     v=$(echo "$1" | sed "s/'/'\\\\''/g")
320     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
321     echo "$v"
322 }
323
324 cleanws(){
325     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
326 }
327
328 filter(){
329     pat=$1
330     shift
331     for v; do
332         eval "case $v in $pat) echo $v ;; esac"
333     done
334 }
335
336 filter_out(){
337     pat=$1
338     shift
339     for v; do
340         eval "case $v in $pat) ;; *) echo $v ;; esac"
341     done
342 }
343
344 map(){
345     m=$1
346     shift
347     for v; do eval $m; done
348 }
349
350 set_all(){
351     value=$1
352     shift
353     for var in $*; do
354         eval $var=$value
355     done
356 }
357
358 set_weak(){
359     value=$1
360     shift
361     for var; do
362         eval : \${$var:=$value}
363     done
364 }
365
366 set_safe(){
367     var=$1
368     shift
369     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
370 }
371
372 get_safe(){
373     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
374 }
375
376 pushvar(){
377     for var in $*; do
378         eval level=\${${var}_level:=0}
379         eval ${var}_${level}="\$$var"
380         eval ${var}_level=$(($level+1))
381     done
382 }
383
384 popvar(){
385     for var in $*; do
386         eval level=\${${var}_level:-0}
387         test $level = 0 && continue
388         eval level=$(($level-1))
389         eval $var="\${${var}_${level}}"
390         eval ${var}_level=$level
391         eval unset ${var}_${level}
392     done
393 }
394
395 enable(){
396     set_all yes $*
397 }
398
399 disable(){
400     set_all no $*
401 }
402
403 enable_weak(){
404     set_weak yes $*
405 }
406
407 disable_weak(){
408     set_weak no $*
409 }
410
411 enable_safe(){
412     for var; do
413         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
414     done
415 }
416
417 disable_safe(){
418     for var; do
419         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
420     done
421 }
422
423 do_enable_deep(){
424     for var; do
425         enabled $var && continue
426         eval sel="\$${var}_select"
427         eval sgs="\$${var}_suggest"
428         pushvar var sgs
429         enable_deep $sel
430         popvar sgs
431         enable_deep_weak $sgs
432         popvar var
433     done
434 }
435
436 enable_deep(){
437     do_enable_deep $*
438     enable $*
439 }
440
441 enable_deep_weak(){
442     do_enable_deep $*
443     enable_weak $*
444 }
445
446 enabled(){
447     test "${1#!}" = "$1" && op== || op=!=
448     eval test "x\$${1#!}" $op "xyes"
449 }
450
451 disabled(){
452     test "${1#!}" = "$1" && op== || op=!=
453     eval test "x\$${1#!}" $op "xno"
454 }
455
456 enabled_all(){
457     for opt; do
458         enabled $opt || return 1
459     done
460 }
461
462 disabled_all(){
463     for opt; do
464         disabled $opt || return 1
465     done
466 }
467
468 enabled_any(){
469     for opt; do
470         enabled $opt && return 0
471     done
472 }
473
474 disabled_any(){
475     for opt; do
476         disabled $opt && return 0
477     done
478     return 1
479 }
480
481 set_default(){
482     for opt; do
483         eval : \${$opt:=\$${opt}_default}
484     done
485 }
486
487 is_in(){
488     value=$1
489     shift
490     for var in $*; do
491         [ $var = $value ] && return 0
492     done
493     return 1
494 }
495
496 check_deps(){
497     for cfg; do
498         cfg="${cfg#!}"
499         enabled ${cfg}_checking && die "Circular dependency for $cfg."
500         disabled ${cfg}_checking && continue
501         enable ${cfg}_checking
502
503         eval dep_all="\$${cfg}_deps"
504         eval dep_any="\$${cfg}_deps_any"
505         eval dep_sel="\$${cfg}_select"
506         eval dep_sgs="\$${cfg}_suggest"
507         eval dep_ifa="\$${cfg}_if"
508         eval dep_ifn="\$${cfg}_if_any"
509
510         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
511         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
512         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
513
514         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
515         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
516         enabled_all  $dep_all || disable $cfg
517         enabled_any  $dep_any || disable $cfg
518         disabled_any $dep_sel && disable $cfg
519
520         if enabled $cfg; then
521             eval dep_extralibs="\$${cfg}_extralibs"
522             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
523             enable_deep $dep_sel
524             enable_deep_weak $dep_sgs
525         fi
526
527         disable ${cfg}_checking
528     done
529 }
530
531 print_config_h(){
532     enabled $1 && v=1 || v=0
533     echo "#define $2 $v"
534 }
535
536 print_config_mak(){
537     enabled $1 && v= || v=!
538     echo "$v$2=yes"
539 }
540
541 print_config_asm(){
542     enabled $1 && echo "%define $2"
543 }
544
545 print_config(){
546     pfx=$1
547     files=$2
548     shift 2
549     for cfg; do
550         ucname="$(toupper $cfg)"
551         for f in $files; do
552             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
553         done
554     done
555 }
556
557 print_enabled(){
558     test "$1" = -n && end=" " && shift || end="\n"
559     suf=$1
560     shift
561     for v; do
562         enabled $v && printf "%s$end" ${v%$suf};
563     done
564 }
565
566 append(){
567     var=$1
568     shift
569     eval "$var=\"\$$var $*\""
570 }
571
572 prepend(){
573     var=$1
574     shift
575     eval "$var=\"$* \$$var\""
576 }
577
578 add_cppflags(){
579     append CPPFLAGS $($filter_cppflags "$@")
580 }
581
582 add_cflags(){
583     append CFLAGS $($filter_cflags "$@")
584 }
585
586 add_asflags(){
587     append ASFLAGS $($filter_asflags "$@")
588 }
589
590 add_ldflags(){
591     append LDFLAGS "$@"
592 }
593
594 add_extralibs(){
595     prepend extralibs "$@"
596 }
597
598 check_cmd(){
599     log "$@"
600     "$@" >> $logfile 2>&1
601 }
602
603 check_cc(){
604     log check_cc "$@"
605     cat > $TMPC
606     log_file $TMPC
607     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
608 }
609
610 check_cpp(){
611     log check_cpp "$@"
612     cat > $TMPC
613     log_file $TMPC
614     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
615 }
616
617 check_as(){
618     log check_as "$@"
619     cat > $TMPC
620     log_file $TMPC
621     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
622 }
623
624 check_asm(){
625     log check_asm "$@"
626     name="$1"
627     code="$2"
628     shift 2
629     disable $name
630     check_as "$@" <<EOF && enable $name
631 void foo(void){ __asm__ volatile($code); }
632 EOF
633 }
634
635 check_yasm(){
636     log check_yasm "$@"
637     echo "$1" > $TMPS
638     log_file $TMPS
639     shift 1
640     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
641 }
642
643 check_ld(){
644     log check_ld "$@"
645     flags=''
646     libs=''
647     for f; do
648         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
649     done
650     check_cc $($filter_cflags $flags) || return
651     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
652 }
653
654 check_cppflags(){
655     log check_cppflags "$@"
656     set -- $($filter_cppflags "$@")
657     check_cc "$@" <<EOF && append CPPFLAGS "$@"
658 int x;
659 EOF
660 }
661
662 check_cflags(){
663     log check_cflags "$@"
664     set -- $($filter_cflags "$@")
665     check_cc "$@" <<EOF && append CFLAGS "$@"
666 int x;
667 EOF
668 }
669
670 test_ldflags(){
671     log test_ldflags "$@"
672     check_ld "$@" <<EOF
673 int main(void){ return 0; }
674 EOF
675 }
676
677 check_ldflags(){
678     log check_ldflags "$@"
679     test_ldflags "$@" && add_ldflags "$@"
680 }
681
682 check_header(){
683     log check_header "$@"
684     header=$1
685     shift
686     disable_safe $header
687     check_cpp "$@" <<EOF && enable_safe $header
688 #include <$header>
689 int x;
690 EOF
691 }
692
693 check_func(){
694     log check_func "$@"
695     func=$1
696     shift
697     disable $func
698     check_ld "$@" <<EOF && enable $func
699 extern int $func();
700 int main(void){ $func(); }
701 EOF
702 }
703
704 check_mathfunc(){
705     log check_mathfunc "$@"
706     func=$1
707     shift
708     disable $func
709     check_ld "$@" <<EOF && enable $func
710 #include <math.h>
711 float foo(float f) { return $func(f); }
712 int main(void){ return 0; }
713 EOF
714 }
715
716 check_func_headers(){
717     log check_func_headers "$@"
718     headers=$1
719     funcs=$2
720     shift 2
721     {
722         for hdr in $headers; do
723             echo "#include <$hdr>"
724         done
725         for func in $funcs; do
726             echo "long check_$func(void) { return (long) $func; }"
727         done
728         echo "int main(void) { return 0; }"
729     } | check_ld "$@" && enable $funcs && enable_safe $headers
730 }
731
732 check_cpp_condition(){
733     log check_cpp_condition "$@"
734     header=$1
735     condition=$2
736     shift 2
737     check_cpp $($filter_cppflags "$@") <<EOF
738 #include <$header>
739 #if !($condition)
740 #error "unsatisfied condition: $condition"
741 #endif
742 EOF
743 }
744
745 check_lib(){
746     log check_lib "$@"
747     header="$1"
748     func="$2"
749     shift 2
750     check_header $header && check_func $func "$@" && add_extralibs "$@"
751 }
752
753 check_lib2(){
754     log check_lib2 "$@"
755     headers="$1"
756     funcs="$2"
757     shift 2
758     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
759 }
760
761 check_pkg_config(){
762     log check_pkg_config "$@"
763     pkg="$1"
764     headers="$2"
765     funcs="$3"
766     shift 3
767     $pkg_config --exists $pkg || return
768     pkg_cflags=$($pkg_config --cflags $pkg)
769     pkg_libs=$($pkg_config --libs $pkg)
770     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
771         set_safe ${pkg}_cflags $pkg_cflags   &&
772         set_safe ${pkg}_libs   $pkg_libs
773 }
774
775 check_exec(){
776     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
777 }
778
779 check_exec_crash(){
780     code=$(cat)
781
782     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
783     # are safe but may not be available everywhere.  Thus we use
784     # raise(SIGTERM) instead.  The check is run in a subshell so we
785     # can redirect the "Terminated" message from the shell.  SIGBUS
786     # is not defined by standard C so it is used conditionally.
787
788     (check_exec "$@") >> $logfile 2>&1 <<EOF
789 #include <signal.h>
790 static void sighandler(int sig){
791     raise(SIGTERM);
792 }
793 int main(void){
794     signal(SIGILL, sighandler);
795     signal(SIGFPE, sighandler);
796     signal(SIGSEGV, sighandler);
797 #ifdef SIGBUS
798     signal(SIGBUS, sighandler);
799 #endif
800     { $code }
801 }
802 EOF
803 }
804
805 check_type(){
806     log check_type "$@"
807     headers=$1
808     type=$2
809     shift 2
810     disable_safe "$type"
811     incs=""
812     for hdr in $headers; do
813         incs="$incs
814 #include <$hdr>"
815     done
816     check_cc "$@" <<EOF && enable_safe "$type"
817 $incs
818 $type v;
819 EOF
820 }
821
822 check_struct(){
823     log check_type "$@"
824     headers=$1
825     struct=$2
826     member=$3
827     shift 3
828     disable_safe "${struct}_${member}"
829     incs=""
830     for hdr in $headers; do
831         incs="$incs
832 #include <$hdr>"
833     done
834     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
835 $incs
836 const void *p = &(($struct *)0)->$member;
837 EOF
838 }
839
840 require(){
841     name="$1"
842     header="$2"
843     func="$3"
844     shift 3
845     check_lib $header $func "$@" || die "ERROR: $name not found"
846 }
847
848 require2(){
849     name="$1"
850     headers="$2"
851     func="$3"
852     shift 3
853     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
854 }
855
856 require_pkg_config(){
857     pkg="$1"
858     check_pkg_config "$@" || die "ERROR: $pkg not found"
859     add_cflags    $(get_safe ${pkg}_cflags)
860     add_extralibs $(get_safe ${pkg}_libs)
861 }
862
863 check_host_cc(){
864     log check_host_cc "$@"
865     cat > $TMPC
866     log_file $TMPC
867     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
868 }
869
870 check_host_cflags(){
871     log check_host_cflags "$@"
872     check_host_cc "$@" <<EOF && append host_cflags "$@"
873 int x;
874 EOF
875 }
876
877 apply(){
878     file=$1
879     shift
880     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
881 }
882
883 cp_if_changed(){
884     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
885     mkdir -p "$(dirname $2)"
886     cp -f "$1" "$2"
887 }
888
889 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
890 # system-dependent things.
891
892 COMPONENT_LIST="
893     bsfs
894     decoders
895     demuxers
896     encoders
897     filters
898     hwaccels
899     indevs
900     muxers
901     outdevs
902     parsers
903     protocols
904 "
905
906 CONFIG_LIST="
907     $COMPONENT_LIST
908     aandct
909     ac3dsp
910     avcodec
911     avdevice
912     avfilter
913     avformat
914     avisynth
915     bzlib
916     dct
917     doc
918     dwt
919     dxva2
920     fastdiv
921     ffmpeg
922     avconv
923     avplay
924     avprobe
925     avserver
926     fft
927     frei0r
928     gnutls
929     golomb
930     gpl
931     gray
932     h264chroma
933     h264dsp
934     h264pred
935     hardcoded_tables
936     huffman
937     libcdio
938     libdc1394
939     libdirac
940     libfaac
941     libfreetype
942     libgsm
943     libmp3lame
944     libnut
945     libopencore_amrnb
946     libopencore_amrwb
947     libopencv
948     libopenjpeg
949     libpulse
950     librtmp
951     libschroedinger
952     libspeex
953     libtheora
954     libvo_aacenc
955     libvo_amrwbenc
956     libvorbis
957     libvpx
958     libx264
959     libxavs
960     libxvid
961     lpc
962     lsp
963     mdct
964     memalign_hack
965     mlib
966     mpegaudiodsp
967     network
968     nonfree
969     openssl
970     pic
971     postproc
972     rdft
973     rtpdec
974     runtime_cpudetect
975     shared
976     sinewin
977     small
978     sram
979     static
980     swscale
981     swscale_alpha
982     thumb
983     vaapi
984     vda
985     vdpau
986     version3
987     x11grab
988     zlib
989 "
990
991 THREADS_LIST='
992     pthreads
993     w32threads
994 '
995
996 ARCH_LIST='
997     alpha
998     arm
999     avr32
1000     avr32_ap
1001     avr32_uc
1002     bfin
1003     ia64
1004     m68k
1005     mips
1006     mips64
1007     parisc
1008     ppc
1009     ppc64
1010     s390
1011     sh4
1012     sparc
1013     sparc64
1014     tomi
1015     x86
1016     x86_32
1017     x86_64
1018 '
1019
1020 ARCH_EXT_LIST='
1021     altivec
1022     amd3dnow
1023     amd3dnowext
1024     armv5te
1025     armv6
1026     armv6t2
1027     armvfp
1028     avx
1029     iwmmxt
1030     mmi
1031     mmx
1032     mmx2
1033     neon
1034     ppc4xx
1035     sse
1036     ssse3
1037     vfpv3
1038     vis
1039 '
1040
1041 HAVE_LIST_PUB='
1042     bigendian
1043     fast_unaligned
1044 '
1045
1046 HAVE_LIST="
1047     $ARCH_EXT_LIST
1048     $HAVE_LIST_PUB
1049     $THREADS_LIST
1050     aligned_stack
1051     alsa_asoundlib_h
1052     altivec_h
1053     arpa_inet_h
1054     asm_mod_y
1055     attribute_may_alias
1056     attribute_packed
1057     closesocket
1058     cmov
1059     dcbzl
1060     dev_bktr_ioctl_bt848_h
1061     dev_bktr_ioctl_meteor_h
1062     dev_ic_bt8xx_h
1063     dev_video_meteor_ioctl_meteor_h
1064     dev_video_bktr_ioctl_bt848_h
1065     dlfcn_h
1066     dlopen
1067     dos_paths
1068     ebp_available
1069     ebx_available
1070     exp2
1071     exp2f
1072     fast_64bit
1073     fast_clz
1074     fast_cmov
1075     fcntl
1076     fork
1077     getaddrinfo
1078     gethrtime
1079     GetProcessMemoryInfo
1080     GetProcessTimes
1081     getrusage
1082     gnu_as
1083     struct_rusage_ru_maxrss
1084     ibm_asm
1085     inet_aton
1086     inline_asm
1087     isatty
1088     ldbrx
1089     libdc1394_1
1090     libdc1394_2
1091     llrint
1092     llrintf
1093     local_aligned_16
1094     local_aligned_8
1095     localtime_r
1096     log2
1097     log2f
1098     loongson
1099     lrint
1100     lrintf
1101     lzo1x_999_compress
1102     machine_ioctl_bt848_h
1103     machine_ioctl_meteor_h
1104     malloc_h
1105     MapViewOfFile
1106     memalign
1107     mkstemp
1108     mmap
1109     posix_memalign
1110     round
1111     roundf
1112     sdl
1113     sdl_video_size
1114     setmode
1115     sndio_h
1116     socklen_t
1117     soundcard_h
1118     poll_h
1119     setrlimit
1120     strerror_r
1121     strptime
1122     strtok_r
1123     struct_addrinfo
1124     struct_ipv6_mreq
1125     struct_sockaddr_in6
1126     struct_sockaddr_sa_len
1127     struct_sockaddr_storage
1128     symver
1129     symver_gnu_asm
1130     symver_asm_label
1131     sys_mman_h
1132     sys_resource_h
1133     sys_select_h
1134     sys_soundcard_h
1135     sys_videoio_h
1136     threads
1137     trunc
1138     truncf
1139     vfp_args
1140     VirtualAlloc
1141     winsock2_h
1142     xform_asm
1143     xmm_clobbers
1144     yasm
1145 "
1146
1147 # options emitted with CONFIG_ prefix but not available on command line
1148 CONFIG_EXTRA="
1149     avutil
1150     gplv3
1151     lgplv3
1152 "
1153
1154 CMDLINE_SELECT="
1155     $ARCH_EXT_LIST
1156     $CONFIG_LIST
1157     $THREADS_LIST
1158     asm
1159     cross_compile
1160     debug
1161     extra_warnings
1162     logging
1163     optimizations
1164     symver
1165     yasm
1166 "
1167
1168 PATHS_LIST='
1169     bindir
1170     datadir
1171     incdir
1172     libdir
1173     mandir
1174     prefix
1175     shlibdir
1176 '
1177
1178 CMDLINE_SET="
1179     $PATHS_LIST
1180     ar
1181     arch
1182     as
1183     build_suffix
1184     cc
1185     cpu
1186     cross_prefix
1187     dep_cc
1188     extra_version
1189     host_cc
1190     host_cflags
1191     host_ldflags
1192     host_libs
1193     host_os
1194     ld
1195     logfile
1196     malloc_prefix
1197     nm
1198     optflags
1199     pkg_config
1200     samples
1201     sysinclude
1202     sysroot
1203     target_exec
1204     target_os
1205     target_path
1206 "
1207
1208 CMDLINE_APPEND="
1209     extra_cflags
1210 "
1211
1212 # code dependency declarations
1213
1214 # architecture extensions
1215
1216 armv5te_deps="arm"
1217 armv6_deps="arm"
1218 armv6t2_deps="arm"
1219 armvfp_deps="arm"
1220 iwmmxt_deps="arm"
1221 neon_deps="arm"
1222 vfpv3_deps="armvfp"
1223
1224 mmi_deps="mips"
1225
1226 altivec_deps="ppc"
1227 ppc4xx_deps="ppc"
1228
1229 vis_deps="sparc"
1230
1231 x86_64_suggest="cmov fast_cmov"
1232 amd3dnow_deps="mmx"
1233 amd3dnowext_deps="amd3dnow"
1234 mmx_deps="x86"
1235 mmx2_deps="mmx"
1236 sse_deps="mmx"
1237 ssse3_deps="sse"
1238 avx_deps="ssse3"
1239
1240 aligned_stack_if_any="ppc x86"
1241 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1242 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1243 fast_unaligned_if_any="armv6 ppc x86"
1244
1245 need_memalign="altivec neon sse"
1246 inline_asm_deps="!tms470"
1247
1248 symver_if_any="symver_asm_label symver_gnu_asm"
1249
1250 # subsystems
1251 dct_select="rdft"
1252 mdct_select="fft"
1253 rdft_select="fft"
1254 mpegaudiodsp_select="dct"
1255
1256 # decoders / encoders / hardware accelerators
1257 aac_decoder_select="mdct sinewin"
1258 aac_encoder_select="mdct sinewin"
1259 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1260 ac3_decoder_select="mdct ac3dsp ac3_parser"
1261 ac3_encoder_select="mdct ac3dsp"
1262 ac3_fixed_encoder_select="mdct ac3dsp"
1263 alac_encoder_select="lpc"
1264 amrnb_decoder_select="lsp"
1265 amrwb_decoder_select="lsp"
1266 atrac1_decoder_select="mdct sinewin"
1267 atrac3_decoder_select="mdct"
1268 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1269 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1270 cavs_decoder_select="golomb"
1271 cook_decoder_select="mdct sinewin"
1272 cscd_decoder_suggest="zlib"
1273 dca_decoder_select="mdct"
1274 dnxhd_encoder_select="aandct"
1275 dxa_decoder_select="zlib"
1276 eac3_decoder_select="ac3_decoder"
1277 eac3_encoder_select="mdct ac3dsp"
1278 eamad_decoder_select="aandct"
1279 eatgq_decoder_select="aandct"
1280 eatqi_decoder_select="aandct"
1281 ffv1_decoder_select="golomb"
1282 flac_decoder_select="golomb"
1283 flac_encoder_select="golomb lpc"
1284 flashsv_decoder_select="zlib"
1285 flashsv_encoder_select="zlib"
1286 flashsv2_decoder_select="zlib"
1287 flv_decoder_select="h263_decoder"
1288 flv_encoder_select="h263_encoder"
1289 fraps_decoder_select="huffman"
1290 h261_encoder_select="aandct"
1291 h263_decoder_select="h263_parser"
1292 h263_encoder_select="aandct"
1293 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1294 h263i_decoder_select="h263_decoder"
1295 h263p_encoder_select="h263_encoder"
1296 h264_decoder_select="golomb h264chroma h264dsp h264pred"
1297 h264_dxva2_hwaccel_deps="dxva2api_h"
1298 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1299 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1300 h264_vda_hwaccel_select="vda h264_decoder"
1301 h264_vdpau_decoder_select="vdpau h264_decoder"
1302 imc_decoder_select="fft mdct sinewin"
1303 jpegls_decoder_select="golomb"
1304 jpegls_encoder_select="golomb"
1305 ljpeg_encoder_select="aandct"
1306 loco_decoder_select="golomb"
1307 mjpeg_encoder_select="aandct"
1308 mlp_decoder_select="mlp_parser"
1309 mp1_decoder_select="mpegaudiodsp"
1310 mp2_decoder_select="mpegaudiodsp"
1311 mp3adu_decoder_select="mpegaudiodsp"
1312 mp3_decoder_select="mpegaudiodsp"
1313 mp3on4_decoder_select="mpegaudiodsp"
1314 mp1float_decoder_select="mpegaudiodsp"
1315 mp2float_decoder_select="mpegaudiodsp"
1316 mp3adufloat_decoder_select="mpegaudiodsp"
1317 mp3float_decoder_select="mpegaudiodsp"
1318 mp3on4float_decoder_select="mpegaudiodsp"
1319 mpeg1video_encoder_select="aandct"
1320 mpeg2video_encoder_select="aandct"
1321 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1322 mpeg4_encoder_select="h263_encoder"
1323 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1324 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1325 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1326 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1327 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1328 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1329 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1330 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1331 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1332 msmpeg4v1_decoder_select="h263_decoder"
1333 msmpeg4v1_encoder_select="h263_encoder"
1334 msmpeg4v2_decoder_select="h263_decoder"
1335 msmpeg4v2_encoder_select="h263_encoder"
1336 msmpeg4v3_decoder_select="h263_decoder"
1337 msmpeg4v3_encoder_select="h263_encoder"
1338 nellymoser_decoder_select="mdct sinewin"
1339 nellymoser_encoder_select="mdct sinewin"
1340 png_decoder_select="zlib"
1341 png_encoder_select="zlib"
1342 qcelp_decoder_select="lsp"
1343 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1344 ra_144_encoder_select="lpc"
1345 rv10_decoder_select="h263_decoder"
1346 rv10_encoder_select="h263_encoder"
1347 rv20_decoder_select="h263_decoder"
1348 rv20_encoder_select="h263_encoder"
1349 rv30_decoder_select="golomb h264chroma h264pred"
1350 rv40_decoder_select="golomb h264chroma h264pred"
1351 shorten_decoder_select="golomb"
1352 sipr_decoder_select="lsp"
1353 snow_decoder_select="dwt"
1354 snow_encoder_select="aandct dwt"
1355 svq1_encoder_select="aandct"
1356 svq3_decoder_select="golomb h264chroma h264dsp h264pred"
1357 svq3_decoder_suggest="zlib"
1358 theora_decoder_select="vp3_decoder"
1359 tiff_decoder_suggest="zlib"
1360 tiff_encoder_suggest="zlib"
1361 truehd_decoder_select="mlp_decoder"
1362 tscc_decoder_select="zlib"
1363 twinvq_decoder_select="mdct lsp sinewin"
1364 vc1_decoder_select="h263_decoder h264chroma"
1365 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1366 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1367 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1368 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1369 vc1image_decoder_select="vc1_decoder"
1370 vorbis_decoder_select="mdct"
1371 vorbis_encoder_select="mdct"
1372 vp6_decoder_select="huffman"
1373 vp6a_decoder_select="vp6_decoder"
1374 vp6f_decoder_select="vp6_decoder"
1375 vp8_decoder_select="h264pred"
1376 wmapro_decoder_select="mdct sinewin"
1377 wmav1_decoder_select="mdct sinewin"
1378 wmav1_encoder_select="mdct sinewin"
1379 wmav2_decoder_select="mdct sinewin"
1380 wmav2_encoder_select="mdct sinewin"
1381 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1382 wmv1_decoder_select="h263_decoder"
1383 wmv1_encoder_select="h263_encoder"
1384 wmv2_decoder_select="h263_decoder"
1385 wmv2_encoder_select="h263_encoder"
1386 wmv3_decoder_select="vc1_decoder"
1387 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1388 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1389 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1390 wmv3image_decoder_select="wmv3_decoder"
1391 zlib_decoder_select="zlib"
1392 zlib_encoder_select="zlib"
1393 zmbv_decoder_select="zlib"
1394 zmbv_encoder_select="zlib"
1395
1396 vaapi_deps="va_va_h"
1397 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1398 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1399
1400 # parsers
1401 h264_parser_select="golomb h264chroma h264dsp h264pred"
1402
1403 # external libraries
1404 libdirac_decoder_deps="libdirac !libschroedinger"
1405 libdirac_encoder_deps="libdirac"
1406 libfaac_encoder_deps="libfaac"
1407 libgsm_decoder_deps="libgsm"
1408 libgsm_encoder_deps="libgsm"
1409 libgsm_ms_decoder_deps="libgsm"
1410 libgsm_ms_encoder_deps="libgsm"
1411 libmp3lame_encoder_deps="libmp3lame"
1412 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1413 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1414 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1415 libopenjpeg_decoder_deps="libopenjpeg"
1416 libschroedinger_decoder_deps="libschroedinger"
1417 libschroedinger_encoder_deps="libschroedinger"
1418 libspeex_decoder_deps="libspeex"
1419 libspeex_encoder_deps="libspeex"
1420 libtheora_encoder_deps="libtheora"
1421 libvo_aacenc_encoder_deps="libvo_aacenc"
1422 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1423 libvorbis_encoder_deps="libvorbis"
1424 libvpx_decoder_deps="libvpx"
1425 libvpx_encoder_deps="libvpx"
1426 libx264_encoder_deps="libx264"
1427 libxavs_encoder_deps="libxavs"
1428 libxvid_encoder_deps="libxvid"
1429
1430 # demuxers / muxers
1431 ac3_demuxer_select="ac3_parser"
1432 asf_stream_muxer_select="asf_muxer"
1433 avisynth_demuxer_deps="avisynth"
1434 dirac_demuxer_select="dirac_parser"
1435 eac3_demuxer_select="ac3_parser"
1436 flac_demuxer_select="flac_parser"
1437 ipod_muxer_select="mov_muxer"
1438 libnut_demuxer_deps="libnut"
1439 libnut_muxer_deps="libnut"
1440 matroska_audio_muxer_select="matroska_muxer"
1441 matroska_demuxer_suggest="zlib bzlib"
1442 mov_demuxer_suggest="zlib"
1443 mp3_demuxer_select="mpegaudio_parser"
1444 mp4_muxer_select="mov_muxer"
1445 mpegtsraw_demuxer_select="mpegts_demuxer"
1446 mxf_d10_muxer_select="mxf_muxer"
1447 ogg_demuxer_select="golomb"
1448 psp_muxer_select="mov_muxer"
1449 rtp_demuxer_select="sdp_demuxer"
1450 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1451 rtsp_demuxer_select="http_protocol rtpdec"
1452 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1453 sap_demuxer_select="sdp_demuxer"
1454 sap_muxer_select="rtp_muxer rtp_protocol"
1455 sdp_demuxer_select="rtpdec"
1456 spdif_muxer_select="aac_parser"
1457 tg2_muxer_select="mov_muxer"
1458 tgp_muxer_select="mov_muxer"
1459 w64_demuxer_deps="wav_demuxer"
1460
1461 # indevs / outdevs
1462 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1463 alsa_outdev_deps="alsa_asoundlib_h"
1464 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1465 dv1394_indev_deps="dv1394 dv_demuxer"
1466 fbdev_indev_deps="linux_fb_h"
1467 jack_indev_deps="jack_jack_h"
1468 libcdio_indev_deps="libcdio"
1469 libdc1394_indev_deps="libdc1394"
1470 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1471 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1472 pulse_indev_deps="libpulse"
1473 sndio_indev_deps="sndio_h"
1474 sndio_outdev_deps="sndio_h"
1475 v4l_indev_deps="linux_videodev_h"
1476 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1477 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1478 vfwcap_indev_extralibs="-lavicap32"
1479 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1480 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1481
1482 # protocols
1483 gopher_protocol_deps="network"
1484 httpproxy_protocol_deps="network"
1485 httpproxy_protocol_select="tcp_protocol"
1486 http_protocol_deps="network"
1487 http_protocol_select="tcp_protocol"
1488 https_protocol_select="tls_protocol"
1489 mmsh_protocol_select="http_protocol"
1490 mmst_protocol_deps="network"
1491 rtmp_protocol_select="tcp_protocol"
1492 rtp_protocol_select="udp_protocol"
1493 tcp_protocol_deps="network"
1494 tls_protocol_deps_any="openssl gnutls"
1495 tls_protocol_select="tcp_protocol"
1496 udp_protocol_deps="network"
1497
1498 # filters
1499 blackframe_filter_deps="gpl"
1500 boxblur_filter_deps="gpl"
1501 cropdetect_filter_deps="gpl"
1502 delogo_filter_deps="gpl"
1503 drawtext_filter_deps="libfreetype"
1504 frei0r_filter_deps="frei0r dlopen strtok_r"
1505 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1506 hqdn3d_filter_deps="gpl"
1507 ocv_filter_deps="libopencv"
1508 scale_filter_deps="swscale"
1509 yadif_filter_deps="gpl"
1510
1511 # libraries
1512 avdevice_deps="avcodec avformat"
1513 avformat_deps="avcodec"
1514 postproc_deps="gpl"
1515
1516 # programs
1517 ffmpeg_deps="avcodec avformat swscale"
1518 ffmpeg_select="buffer_filter"
1519 avconv_deps="avcodec avformat swscale"
1520 avconv_select="buffer_filter"
1521 avplay_deps="avcodec avformat swscale sdl"
1522 avplay_select="rdft"
1523 avprobe_deps="avcodec avformat"
1524 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1525 avserver_extralibs='$ldl'
1526
1527 doc_deps="texi2html"
1528
1529 # tests
1530
1531 test_deps(){
1532     suf1=$1
1533     suf2=$2
1534     shift 2
1535     for v; do
1536         dep=${v%=*}
1537         tests=${v#*=}
1538         for name in ${tests}; do
1539             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1540         done
1541     done
1542 }
1543
1544 mxf_d10_test_deps="avfilter"
1545 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1546
1547 test_deps _encoder _decoder                                             \
1548     adpcm_g726=g726                                                     \
1549     adpcm_ima_qt                                                        \
1550     adpcm_ima_wav                                                       \
1551     adpcm_ms                                                            \
1552     adpcm_swf                                                           \
1553     adpcm_yamaha=adpcm_yam                                              \
1554     alac                                                                \
1555     asv1                                                                \
1556     asv2                                                                \
1557     bmp                                                                 \
1558     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1559     dvvideo="dv dv_411 dv50"                                            \
1560     ffv1                                                                \
1561     flac                                                                \
1562     flashsv                                                             \
1563     flv                                                                 \
1564     gif                                                                 \
1565     h261                                                                \
1566     h263="h263 h263p"                                                   \
1567     huffyuv                                                             \
1568     jpegls                                                              \
1569     mjpeg="jpg mjpeg ljpeg"                                             \
1570     mp2                                                                 \
1571     mpeg1video="mpeg mpeg1b"                                            \
1572     mpeg2video="mpeg2 mpeg2_422 mpeg2_idct_int mpeg2_ilace mpeg2_ivlc_qprd" \
1573     mpeg2video="mpeg2thread mpeg2thread_ilace"                          \
1574     mpeg4="mpeg4 mpeg4_adap mpeg4_qpel mpeg4_qprd mpeg4adv mpeg4nr"     \
1575     mpeg4="mpeg4thread error rc"                                        \
1576     msmpeg4v3=msmpeg4                                                   \
1577     msmpeg4v2                                                           \
1578     pbm=pbmpipe                                                         \
1579     pcx                                                                 \
1580     pgm="pgm pgmpipe"                                                   \
1581     png                                                                 \
1582     ppm="ppm ppmpipe"                                                   \
1583     rawvideo="rgb yuv"                                                  \
1584     roq                                                                 \
1585     rv10                                                                \
1586     rv20                                                                \
1587     sgi                                                                 \
1588     snow="snow snowll"                                                  \
1589     svq1                                                                \
1590     targa=tga                                                           \
1591     tiff                                                                \
1592     wmav1                                                               \
1593     wmav2                                                               \
1594     wmv1                                                                \
1595     wmv2                                                                \
1596
1597 test_deps _muxer _demuxer                                               \
1598     aiff                                                                \
1599     pcm_alaw=alaw                                                       \
1600     asf                                                                 \
1601     au                                                                  \
1602     avi                                                                 \
1603     dv=dv_fmt                                                           \
1604     ffm                                                                 \
1605     flv=flv_fmt                                                         \
1606     gxf                                                                 \
1607     matroska=mkv                                                        \
1608     mmf                                                                 \
1609     mov                                                                 \
1610     pcm_mulaw=mulaw                                                     \
1611     mxf="mxf mxf_d10"                                                   \
1612     nut                                                                 \
1613     ogg                                                                 \
1614     rawvideo=pixfmt                                                     \
1615     rm                                                                  \
1616     swf                                                                 \
1617     mpegts=ts                                                           \
1618     voc                                                                 \
1619     wav                                                                 \
1620     yuv4mpegpipe=yuv4mpeg                                               \
1621
1622 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1623 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1624
1625 # default parameters
1626
1627 logfile="config.log"
1628
1629 # installation paths
1630 prefix_default="/usr/local"
1631 bindir_default='${prefix}/bin'
1632 datadir_default='${prefix}/share/avconv'
1633 incdir_default='${prefix}/include'
1634 libdir_default='${prefix}/lib'
1635 mandir_default='${prefix}/share/man'
1636 shlibdir_default="$libdir_default"
1637
1638 # toolchain
1639 ar_default="ar"
1640 cc_default="gcc"
1641 cc_version=\"unknown\"
1642 host_cc_default="gcc"
1643 ln_s="ln -sf"
1644 nm_default="nm"
1645 objformat="elf"
1646 pkg_config_default=pkg-config
1647 ranlib="ranlib"
1648 yasmexe="yasm"
1649 nogas=":"
1650
1651 nm_opts='-g'
1652
1653 # machine
1654 arch_default=$(uname -m)
1655 cpu="generic"
1656
1657 # OS
1658 target_os_default=$(tolower $(uname -s))
1659 host_os=$target_os_default
1660
1661 # configurable options
1662 enable avcodec
1663 enable avdevice
1664 enable avfilter
1665 enable avformat
1666 enable avutil
1667 enable asm
1668 enable debug
1669 enable doc
1670 enable fastdiv
1671 enable ffmpeg
1672 enable avconv
1673 enable avplay
1674 enable avprobe
1675 enable avserver
1676 enable network
1677 enable optimizations
1678 enable postproc
1679 enable static
1680 enable swscale
1681 enable swscale_alpha
1682
1683 # build settings
1684 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1685 AVSERVERLDFLAGS=-Wl,-E
1686 LIBPREF="lib"
1687 LIBSUF=".a"
1688 FULLNAME='$(NAME)$(BUILDSUF)'
1689 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1690 SLIBPREF="lib"
1691 SLIBSUF=".so"
1692 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1693 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1694 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1695 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1696 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1697 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1698
1699 AS_O='-o $@'
1700 CC_O='-o $@'
1701
1702 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1703 host_libs='-lm'
1704
1705 target_path='$(CURDIR)'
1706
1707 # since the object filename is not given with the -MM flag, the compiler
1708 # is only able to print the basename, and we must add the path ourselves
1709 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1710 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1711
1712 # find source path
1713 if test -f configure; then
1714     source_path=.
1715 else
1716     source_path=$(cd $(dirname "$0"); pwd)
1717     echo "$source_path" | grep -q '[[:blank:]]' &&
1718         die "Out of tree builds are impossible with whitespace in source path."
1719     test -e "$source_path/config.h" &&
1720         die "Out of tree builds are impossible with config.h in source dir."
1721 fi
1722
1723 for v in "$@"; do
1724     r=${v#*=}
1725     l=${v%"$r"}
1726     r=$(sh_quote "$r")
1727     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1728 done
1729
1730 find_things(){
1731     thing=$1
1732     pattern=$2
1733     file=$source_path/$3
1734     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1735 }
1736
1737 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1738 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1739 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1740 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1741 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1742 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1743 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1744 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1745 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1746 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1747 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1748
1749 find_tests(){
1750     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1751 }
1752
1753 ACODEC_TESTS=$(find_tests acodec)
1754 VCODEC_TESTS=$(find_tests vsynth1)
1755 LAVF_TESTS=$(find_tests lavf)
1756 LAVFI_TESTS=$(find_tests lavfi)
1757 SEEK_TESTS=$(find_tests seek seek_)
1758
1759 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1760
1761 for n in $COMPONENT_LIST; do
1762     v=$(toupper ${n%s})_LIST
1763     eval enable \$$v
1764     eval ${n}_if_any="\$$v"
1765 done
1766
1767 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1768
1769 die_unknown(){
1770     echo "Unknown option \"$1\"."
1771     echo "See $0 --help for available options."
1772     exit 1
1773 }
1774
1775 show_list() {
1776     suffix=_$1
1777     shift
1778     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1779     exit 0
1780 }
1781
1782 for opt do
1783     optval="${opt#*=}"
1784     case "$opt" in
1785     --extra-ldflags=*) add_ldflags $optval
1786     ;;
1787     --extra-libs=*) add_extralibs $optval
1788     ;;
1789     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1790     ;;
1791     --enable-debug=*) debuglevel="$optval"
1792     ;;
1793     --disable-everything)
1794     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1795     ;;
1796     --enable-*=*|--disable-*=*)
1797     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1798     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1799     eval list=\$$(toupper $thing)_LIST
1800     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1801     $action $(filter "$name" $list)
1802     ;;
1803     --enable-?*|--disable-?*)
1804     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1805     if is_in $option $COMPONENT_LIST; then
1806         test $action = disable && action=unset
1807         eval $action \$$(toupper ${option%s})_LIST
1808     elif is_in $option $CMDLINE_SELECT; then
1809         $action $option
1810     else
1811         die_unknown $opt
1812     fi
1813     ;;
1814     --list-*)
1815         NAME="${opt#--list-}"
1816         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1817         NAME=${NAME%s}
1818         eval show_list $NAME \$$(toupper $NAME)_LIST
1819     ;;
1820     --help|-h) show_help
1821     ;;
1822     *)
1823     optname="${opt%%=*}"
1824     optname="${optname#--}"
1825     optname=$(echo "$optname" | sed 's/-/_/g')
1826     if is_in $optname $CMDLINE_SET; then
1827         eval $optname='$optval'
1828     elif is_in $optname $CMDLINE_APPEND; then
1829         append $optname "$optval"
1830     else
1831          die_unknown $opt
1832     fi
1833     ;;
1834     esac
1835 done
1836
1837 disabled logging && logfile=/dev/null
1838
1839 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1840 set >> $logfile
1841
1842 test -n "$cross_prefix" && enable cross_compile
1843
1844 if enabled cross_compile; then
1845     test -n "$arch" && test -n "$target_os" ||
1846         die "Must specify target arch and OS when cross-compiling"
1847 fi
1848
1849 set_default arch target_os
1850
1851 ar_default="${cross_prefix}${ar_default}"
1852 cc_default="${cross_prefix}${cc_default}"
1853 nm_default="${cross_prefix}${nm_default}"
1854 pkg_config_default="${cross_prefix}${pkg_config_default}"
1855 ranlib="${cross_prefix}${ranlib}"
1856
1857 sysinclude_default="${sysroot}/usr/include"
1858
1859 set_default cc nm pkg_config sysinclude
1860 enabled cross_compile || host_cc_default=$cc
1861 set_default host_cc
1862
1863 if ! $pkg_config --version >/dev/null 2>&1; then
1864     warn "$pkg_config not found, library detection may fail."
1865     pkg_config=false
1866 fi
1867
1868 exesuf() {
1869     case $1 in
1870         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1871     esac
1872 }
1873
1874 EXESUF=$(exesuf $target_os)
1875 HOSTEXESUF=$(exesuf $host_os)
1876
1877 # set temporary file name
1878 : ${TMPDIR:=$TEMPDIR}
1879 : ${TMPDIR:=$TMP}
1880 : ${TMPDIR:=/tmp}
1881
1882 if ! check_cmd mktemp -u XXXXXX; then
1883     # simple replacement for missing mktemp
1884     # NOT SAFE FOR GENERAL USE
1885     mktemp(){
1886         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1887     }
1888 fi
1889
1890 tmpfile(){
1891     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1892         (set -C; exec > $tmp) 2>/dev/null ||
1893         die "Unable to create temporary file in $TMPDIR."
1894     append TMPFILES $tmp
1895     eval $1=$tmp
1896 }
1897
1898 trap 'rm -f -- $TMPFILES' EXIT
1899
1900 tmpfile TMPC  .c
1901 tmpfile TMPE  $EXESUF
1902 tmpfile TMPH  .h
1903 tmpfile TMPO  .o
1904 tmpfile TMPS  .S
1905 tmpfile TMPV  .ver
1906 tmpfile TMPSH .sh
1907 tmpfile TMPASM .asm
1908
1909 unset -f mktemp
1910
1911 chmod +x $TMPE
1912
1913 # make sure we can execute files in $TMPDIR
1914 cat > $TMPSH 2>> $logfile <<EOF
1915 #! /bin/sh
1916 EOF
1917 chmod +x $TMPSH >> $logfile 2>&1
1918 if ! $TMPSH >> $logfile 2>&1; then
1919     cat <<EOF
1920 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1921 variable to another directory and make sure that it is not mounted noexec.
1922 EOF
1923     die "Sanity test failed."
1924 fi
1925
1926 filter_cflags=echo
1927 filter_cppflags=echo
1928 filter_asflags=echo
1929
1930 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1931     cc_type=llvm_gcc
1932     cc_version=__VERSION__
1933     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1934     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1935     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1936     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1937     speed_cflags='-O3'
1938     size_cflags='-Os'
1939 elif $cc -v 2>&1 | grep -qi ^gcc; then
1940     cc_type=gcc
1941     cc_version=__VERSION__
1942     gcc_version=$($cc --version | head -n1)
1943     gcc_basever=$($cc -dumpversion)
1944     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1945     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1946     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1947     if ! $cc -dumpversion | grep -q '^2\.'; then
1948         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1949         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1950     fi
1951     speed_cflags='-O3'
1952     size_cflags='-Os'
1953 elif $cc --version 2>/dev/null | grep -q Intel; then
1954     cc_type=icc
1955     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1956     cc_ident=$($cc --version | head -n1)
1957     icc_version=$($cc -dumpversion)
1958     CC_DEPFLAGS='-MMD'
1959     AS_DEPFLAGS='-MMD'
1960     speed_cflags='-O3'
1961     size_cflags='-Os'
1962     noopt_cflags='-O1'
1963 elif $cc -v 2>&1 | grep -q xlc; then
1964     cc_type=xlc
1965     cc_version="AV_STRINGIFY(__IBMC__)"
1966     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1967     speed_cflags='-O5'
1968     size_cflags='-O5 -qcompact'
1969 elif $cc -V 2>/dev/null | grep -q Compaq; then
1970     cc_type=ccc
1971     cc_version="AV_STRINGIFY(__DECC_VER)"
1972     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1973     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1974     debuglevel=3
1975     add_ldflags -Wl,-z,now # calls to libots crash without this
1976     speed_cflags='-fast'
1977     size_cflags='-O1'
1978 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1979     test -d "$sysroot" || die "No valid sysroot specified."
1980     cc_type=armcc
1981     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1982     cc_ident=$($cc --vsn | head -n1)
1983     armcc_conf="$PWD/armcc.conf"
1984     $cc --arm_linux_configure                 \
1985         --arm_linux_config_file="$armcc_conf" \
1986         --configure_sysroot="$sysroot"        \
1987         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1988         die "Error creating armcc configuration file."
1989     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1990     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1991     as_default="${cross_prefix}gcc"
1992     CC_DEPFLAGS='-MMD'
1993     AS_DEPFLAGS='-MMD'
1994     speed_cflags='-O3'
1995     size_cflags='-Os'
1996     filter_asflags="filter_out -W${armcc_opt}*"
1997 elif $cc -version 2>/dev/null | grep -q TMS470; then
1998     cc_type=tms470
1999     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2000     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2001     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2002     CC_O='-fr=$(@D)'
2003     as_default="${cross_prefix}gcc"
2004     ld_default="${cross_prefix}gcc"
2005     TMPO=$(basename $TMPC .c).o
2006     append TMPFILES $TMPO
2007     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2008     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2009     AS_DEPFLAGS='-MMD'
2010     speed_cflags='-O3 -mf=5'
2011     size_cflags='-O3 -mf=2'
2012     filter_cflags=tms470_flags
2013     tms470_flags(){
2014         for flag; do
2015             case $flag in
2016                 -march=*|-mcpu=*)
2017                     case "${flag#*=}" in
2018                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2019                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2020                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2021                         armv6*|arm11*)          echo -mv=6   ;;
2022                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2023                                                 echo -mv=5e  ;;
2024                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2025                     esac
2026                     ;;
2027                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2028                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2029                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2030                 -msoft-float)   echo --float_support=vfplib       ;;
2031                 -O[0-3]|-mf=*)  echo $flag                        ;;
2032                 -g)             echo -g -mn                       ;;
2033                 -pds=*)         echo $flag                        ;;
2034             esac
2035         done
2036     }
2037 elif $cc -v 2>&1 | grep -q clang; then
2038     cc_type=clang
2039     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2040         cc_version=__clang_version__ || cc_version=__VERSION__
2041     cc_ident=$($cc --version | head -n1)
2042     CC_DEPFLAGS='-MMD'
2043     AS_DEPFLAGS='-MMD'
2044     speed_cflags='-O3'
2045     size_cflags='-Os'
2046 elif $cc -V 2>&1 | grep -q Sun; then
2047     cc_type=suncc
2048     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2049     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2050     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2051     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2052     add_ldflags -xc99
2053     speed_cflags='-O5'
2054     size_cflags='-O5 -xspace'
2055     filter_cflags=suncc_flags
2056     suncc_flags(){
2057         for flag; do
2058             case $flag in
2059                 -march=*|-mcpu=*)
2060                     case "${flag#*=}" in
2061                         native)                   echo -xtarget=native       ;;
2062                         v9|niagara)               echo -xarch=sparc          ;;
2063                         ultrasparc)               echo -xarch=sparcvis       ;;
2064                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2065                         i586|pentium)             echo -xchip=pentium        ;;
2066                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2067                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2068                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2069                         pentium4*)          echo -xtarget=pentium4           ;;
2070                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2071                         *-sse3)             echo -xarch=sse3                 ;;
2072                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2073                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2074                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2075                         k8|opteron|athlon64|athlon-fx)
2076                                                   echo -xarch=sse2a          ;;
2077                         athlon*)                  echo -xarch=pentium_proa   ;;
2078                     esac
2079                     ;;
2080                 -std=c99)             echo -xc99              ;;
2081                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2082                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2083                 -W*,*)                echo $flag              ;;
2084                 -f*-*|-W*)                                    ;;
2085                 *)                    echo $flag              ;;
2086             esac
2087         done
2088     }
2089 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2090     cc_type=pathscale
2091     cc_version=__PATHSCALE__
2092     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2093     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2094     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2095     speed_cflags='-O2'
2096     size_cflags='-Os'
2097     filter_cflags='filter_out -Wdisabled-optimization'
2098 elif $cc -v 2>&1 | grep -q Open64; then
2099     cc_type=open64
2100     cc_version=__OPEN64__
2101     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2102     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2103     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2104     speed_cflags='-O2'
2105     size_cflags='-Os'
2106     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2107 fi
2108
2109 test -n "$cc_type" && enable $cc_type ||
2110     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2111
2112 : ${as_default:=$cc}
2113 : ${dep_cc_default:=$cc}
2114 : ${ld_default:=$cc}
2115 set_default ar as dep_cc ld
2116
2117 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2118 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2119
2120 add_cflags $extra_cflags
2121 add_asflags $extra_cflags
2122
2123 if test -n "$sysroot"; then
2124     case "$cc_type" in
2125         gcc|llvm_gcc|clang)
2126             add_cppflags --sysroot="$sysroot"
2127             add_ldflags --sysroot="$sysroot"
2128         ;;
2129         tms470)
2130             add_cppflags -I"$sysinclude"
2131             add_ldflags  --sysroot="$sysroot"
2132         ;;
2133     esac
2134 fi
2135
2136 if test "$cpu" = host; then
2137     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2138
2139     case "$cc_type" in
2140         gcc|llvm_gcc)
2141             check_native(){
2142                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2143                 sed -n "/cc1.*$1=/{
2144                             s/.*$1=\\([^ ]*\\).*/\\1/
2145                             p
2146                             q
2147                         }" $TMPE
2148             }
2149             cpu=$(check_native -march || check_native -mcpu)
2150         ;;
2151     esac
2152
2153     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2154 fi
2155
2156 # Deal with common $arch aliases
2157 case "$arch" in
2158     arm*)
2159         arch="arm"
2160     ;;
2161     mips|mipsel|IP*)
2162         arch="mips"
2163     ;;
2164     mips64*)
2165         arch="mips"
2166         subarch="mips64"
2167     ;;
2168     parisc|hppa)
2169         arch="parisc"
2170     ;;
2171     parisc64|hppa64)
2172         arch="parisc"
2173         subarch="parisc64"
2174     ;;
2175     "Power Macintosh"|ppc|powerpc)
2176         arch="ppc"
2177     ;;
2178     ppc64|powerpc64)
2179         arch="ppc"
2180         subarch="ppc64"
2181     ;;
2182     s390|s390x)
2183         arch="s390"
2184     ;;
2185     sh4|sh)
2186         arch="sh4"
2187     ;;
2188     sun4u|sparc64)
2189         arch="sparc"
2190         subarch="sparc64"
2191     ;;
2192     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2193         arch="x86"
2194     ;;
2195 esac
2196
2197 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2198 enable $arch
2199
2200 # Add processor-specific flags
2201 if test "$cpu" = generic; then
2202     : do nothing
2203 elif enabled ppc; then
2204
2205     case $(tolower $cpu) in
2206         601|ppc601|powerpc601)
2207             cpuflags="-mcpu=601"
2208             disable altivec
2209         ;;
2210         603*|ppc603*|powerpc603*)
2211             cpuflags="-mcpu=603"
2212             disable altivec
2213         ;;
2214         604*|ppc604*|powerpc604*)
2215             cpuflags="-mcpu=604"
2216             disable altivec
2217         ;;
2218         g3|75*|ppc75*|powerpc75*)
2219             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2220             disable altivec
2221         ;;
2222         g4|745*|ppc745*|powerpc745*)
2223             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2224         ;;
2225         74*|ppc74*|powerpc74*)
2226             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2227         ;;
2228         g5|970|ppc970|powerpc970|power4*)
2229             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2230         ;;
2231         cell)
2232             cpuflags="-mcpu=cell"
2233             enable ldbrx
2234         ;;
2235         e500v2)
2236             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2237             disable altivec
2238         ;;
2239         e500)
2240             cpuflags="-mcpu=8540 -mhard-float"
2241             disable altivec
2242         ;;
2243     esac
2244
2245 elif enabled x86; then
2246
2247     case $cpu in
2248         i[345]86|pentium)
2249             cpuflags="-march=$cpu"
2250             disable mmx
2251         ;;
2252         # targets that do NOT support conditional mov (cmov)
2253         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2254             cpuflags="-march=$cpu"
2255             disable cmov
2256         ;;
2257         # targets that do support conditional mov (cmov)
2258         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2259             cpuflags="-march=$cpu"
2260             enable cmov
2261             enable fast_cmov
2262         ;;
2263         # targets that do support conditional mov but on which it's slow
2264         pentium4|pentium4m|prescott|nocona)
2265             cpuflags="-march=$cpu"
2266             enable cmov
2267             disable fast_cmov
2268         ;;
2269     esac
2270
2271 elif enabled sparc; then
2272
2273     case $cpu in
2274         niagara)
2275             cpuflags="-mcpu=$cpu"
2276             disable vis
2277         ;;
2278         sparc64)
2279             cpuflags="-mcpu=v9"
2280         ;;
2281     esac
2282
2283 elif enabled arm; then
2284
2285     case $cpu in
2286         armv*)
2287             cpuflags="-march=$cpu"
2288             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2289         ;;
2290         *)
2291             cpuflags="-mcpu=$cpu"
2292             case $cpu in
2293                 cortex-a*)                               subarch=armv7a  ;;
2294                 cortex-r*)                               subarch=armv7r  ;;
2295                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2296                 arm11*)                                  subarch=armv6   ;;
2297                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2298                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2299             esac
2300         ;;
2301     esac
2302
2303 elif enabled alpha; then
2304
2305     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2306
2307 elif enabled bfin; then
2308
2309     cpuflags="-mcpu=$cpu"
2310
2311 elif enabled mips; then
2312
2313     cpuflags="-march=$cpu"
2314
2315 elif enabled avr32; then
2316
2317     case $cpu in
2318         ap7[02]0[0-2])
2319             subarch="avr32_ap"
2320             cpuflags="-mpart=$cpu"
2321         ;;
2322         ap)
2323             subarch="avr32_ap"
2324             cpuflags="-march=$cpu"
2325         ;;
2326         uc3[ab]*)
2327             subarch="avr32_uc"
2328             cpuflags="-mcpu=$cpu"
2329         ;;
2330         uc)
2331             subarch="avr32_uc"
2332             cpuflags="-march=$cpu"
2333         ;;
2334     esac
2335
2336 fi
2337
2338 add_cflags $cpuflags
2339 add_asflags $cpuflags
2340
2341 # compiler sanity check
2342 check_exec <<EOF
2343 int main(void){ return 0; }
2344 EOF
2345 if test "$?" != 0; then
2346     echo "$cc is unable to create an executable file."
2347     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2348         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2349         echo "Only do this if you know what cross compiling means."
2350     fi
2351     die "C compiler test failed."
2352 fi
2353
2354 add_cppflags -D_ISOC99_SOURCE
2355 check_cflags -std=c99
2356 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2357 #include <stdlib.h>
2358 EOF
2359 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2360 #include <stdlib.h>
2361 EOF
2362
2363 check_host_cflags -std=c99
2364 check_host_cflags -Wall
2365
2366 case "$arch" in
2367     alpha|ia64|mips|parisc|sparc)
2368         spic=$shared
2369     ;;
2370     x86)
2371         subarch="x86_32"
2372         check_cc <<EOF && subarch="x86_64"
2373         int test[(int)sizeof(char*) - 7];
2374 EOF
2375         if test "$subarch" = "x86_64"; then
2376             spic=$shared
2377         fi
2378     ;;
2379 esac
2380
2381 enable $subarch
2382 enabled spic && enable pic
2383
2384 # OS specific
2385 case $target_os in
2386     haiku)
2387         prefix_default="/boot/common"
2388         network_extralibs="-lnetwork"
2389         host_libs=
2390         ;;
2391     sunos)
2392         AVSERVERLDFLAGS=""
2393         SHFLAGS='-shared -Wl,-h,$$(@F)'
2394         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2395         network_extralibs="-lsocket -lnsl"
2396         add_cppflags -D__EXTENSIONS__
2397         # When using suncc to build, the Solaris linker will mark
2398         # an executable with each instruction set encountered by
2399         # the Solaris assembler.  As our libraries contain their own
2400         # guards for processor-specific code, instead suppress
2401         # generation of the HWCAPS ELF section on Solaris x86 only.
2402         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2403         nm_opts='-P -g'
2404         ;;
2405     netbsd)
2406         disable symver
2407         oss_indev_extralibs="-lossaudio"
2408         oss_outdev_extralibs="-lossaudio"
2409         ;;
2410     openbsd)
2411         enable malloc_aligned
2412         # On OpenBSD 4.5. the compiler does not use PIC unless
2413         # explicitly using -fPIC. Libav builds fine without PIC,
2414         # however the generated executable will not do anything
2415         # (simply quits with exit-code 1, no crash, no output).
2416         # Thus explicitly enable PIC here.
2417         enable pic
2418         disable symver
2419         SHFLAGS='-shared'
2420         oss_indev_extralibs="-lossaudio"
2421         oss_outdev_extralibs="-lossaudio"
2422         ;;
2423     dragonfly)
2424         enable malloc_aligned
2425         disable symver
2426         ;;
2427     freebsd)
2428         enable malloc_aligned
2429         ;;
2430     bsd/os)
2431         add_extralibs -lpoll -lgnugetopt
2432         ;;
2433     darwin)
2434         enable malloc_aligned
2435         gas="gas-preprocessor.pl $cc"
2436         enabled ppc && add_asflags -force_cpusubtype_ALL
2437         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2438         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2439         add_ldflags -Wl,-dynamic,-search_paths_first
2440         SLIBSUF=".dylib"
2441         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2442         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2443         AVSERVERLDFLAGS=-Wl,-bind_at_load
2444         objformat="macho"
2445         enabled x86_64 && objformat="macho64"
2446         enabled_any pic shared ||
2447             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2448         ;;
2449     mingw32*)
2450         if test $target_os = "mingw32ce"; then
2451             disable network
2452         else
2453             target_os=mingw32
2454         fi
2455         LIBTARGET=i386
2456         if enabled x86_64; then
2457             enable malloc_aligned
2458             LIBTARGET="i386:x86-64"
2459         elif enabled arm; then
2460             LIBTARGET=arm-wince
2461         fi
2462         shlibdir_default="$bindir_default"
2463         SLIBPREF=""
2464         SLIBSUF=".dll"
2465         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2466         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2467         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2468         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2469         SLIB_INSTALL_LINKS=
2470         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2471         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2472         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'
2473         objformat="win32"
2474         dlltool="${cross_prefix}dlltool"
2475         enable dos_paths
2476         check_cflags -fno-common
2477         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2478                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2479                 die "ERROR: MinGW runtime version must be >= 3.15."
2480         add_cppflags -U__STRICT_ANSI__
2481         ;;
2482     cygwin*)
2483         target_os=cygwin
2484         shlibdir_default="$bindir_default"
2485         SLIBPREF="cyg"
2486         SLIBSUF=".dll"
2487         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2488         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2489         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2490         objformat="win32"
2491         enable dos_paths
2492         check_cflags -fno-common
2493         add_cppflags -U__STRICT_ANSI__
2494         ;;
2495     *-dos|freedos|opendos)
2496         network_extralibs="-lsocket"
2497         objformat="coff"
2498         enable dos_paths
2499         add_cppflags -U__STRICT_ANSI__
2500         ;;
2501     linux)
2502         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2503         enable dv1394
2504         ;;
2505     irix*)
2506         target_os=irix
2507         ranlib="echo ignoring ranlib"
2508         ;;
2509     os/2*)
2510         ln_s="cp -f"
2511         objformat="aout"
2512         add_cppflags -D_GNU_SOURCE
2513         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2514         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2515         AVSERVERLDFLAGS=""
2516         LIBSUF="_s.a"
2517         SLIBPREF=""
2518         SLIBSUF=".dll"
2519         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2520         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2521         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2522           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2523           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2524           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2525           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2526           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2527         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2528           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2529         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2530         enable dos_paths
2531         ;;
2532     gnu/kfreebsd)
2533         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2534         ;;
2535     gnu)
2536         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2537         ;;
2538     qnx)
2539         add_cppflags -D_QNX_SOURCE
2540         network_extralibs="-lsocket"
2541         ;;
2542     symbian)
2543         SLIBSUF=".dll"
2544         enable dos_paths
2545         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2546         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2547         add_ldflags -Wl,--target1-abs,--no-undefined \
2548                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2549                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2550         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2551                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2552                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2553         ;;
2554     none)
2555         ;;
2556     *)
2557         die "Unknown OS '$target_os'."
2558         ;;
2559 esac
2560
2561 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2562
2563 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2564
2565 set_default $PATHS_LIST
2566
2567 # we need to build at least one lib type
2568 if ! enabled_any static shared; then
2569     cat <<EOF
2570 At least one library type must be built.
2571 Specify --enable-static to build the static libraries or --enable-shared to
2572 build the shared libraries as well. To only build the shared libraries specify
2573 --disable-static in addition to --enable-shared.
2574 EOF
2575     exit 1;
2576 fi
2577
2578 die_license_disabled() {
2579     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2580 }
2581
2582 die_license_disabled gpl libcdio
2583 die_license_disabled gpl libx264
2584 die_license_disabled gpl libxavs
2585 die_license_disabled gpl libxvid
2586 die_license_disabled gpl x11grab
2587
2588 die_license_disabled nonfree libfaac
2589 die_license_disabled nonfree openssl
2590
2591 die_license_disabled version3 libopencore_amrnb
2592 die_license_disabled version3 libopencore_amrwb
2593 die_license_disabled version3 libvo_aacenc
2594 die_license_disabled version3 libvo_amrwbenc
2595
2596 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2597
2598 disabled optimizations || check_cflags -fomit-frame-pointer
2599
2600 enable_pic() {
2601     enable pic
2602     add_cppflags -DPIC
2603     add_cflags   -fPIC
2604     add_asflags  -fPIC
2605 }
2606
2607 enabled pic && enable_pic
2608
2609 check_cc <<EOF || die "Symbol mangling check failed."
2610 int ff_extern;
2611 EOF
2612 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2613 extern_prefix=${sym%%ff_extern*}
2614
2615 check_cc <<EOF && enable inline_asm
2616 void foo(void) { __asm__ volatile ("" ::); }
2617 EOF
2618
2619 _restrict=
2620 for restrict_keyword in restrict __restrict__ __restrict; do
2621     check_cc <<EOF && _restrict=$restrict_keyword && break
2622 void foo(char * $restrict_keyword p);
2623 EOF
2624 done
2625
2626 check_cc <<EOF && enable attribute_packed
2627 struct { int x; } __attribute__((packed)) x;
2628 EOF
2629
2630 check_cc <<EOF && enable attribute_may_alias
2631 union { int x; } __attribute__((may_alias)) x;
2632 EOF
2633
2634 check_cc <<EOF || die "endian test failed"
2635 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2636 EOF
2637 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2638
2639 if enabled alpha; then
2640
2641     check_cflags -mieee
2642
2643 elif enabled arm; then
2644
2645     enabled thumb && check_cflags -mthumb || check_cflags -marm
2646     nogas=die
2647
2648     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2649         enable vfp_args
2650     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2651         case "${cross_prefix:-$cc}" in
2652             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2653             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2654 __asm__ (".eabi_attribute 28, 1");
2655 int main(void) { return 0; }
2656 EOF
2657         esac
2658         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2659     fi
2660
2661     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2662     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2663     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2664     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2665     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2666     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2667     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2668
2669     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2670
2671     enabled_all armv6t2 shared !pic && enable_pic
2672
2673 elif enabled mips; then
2674
2675     check_asm loongson '"dmult.g $1, $2, $3"'
2676     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2677
2678 elif enabled ppc; then
2679
2680     enable local_aligned_8 local_aligned_16
2681
2682     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2683     check_asm ibm_asm   '"add 0, 0, 0"'
2684     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2685     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2686
2687     # AltiVec flags: The FSF version of GCC differs from the Apple version
2688     if enabled altivec; then
2689         nogas=warn
2690         check_cflags -maltivec -mabi=altivec &&
2691         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2692         check_cflags -faltivec
2693
2694         # check if our compiler supports Motorola AltiVec C API
2695         check_cc <<EOF || disable altivec
2696 $inc_altivec_h
2697 int main(void) {
2698     vector signed int v1, v2, v3;
2699     v1 = vec_add(v2,v3);
2700     return 0;
2701 }
2702 EOF
2703
2704         # check if our compiler supports braces for vector declarations
2705         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2706 $inc_altivec_h
2707 int main (void) { (vector int) {1}; return 0; }
2708 EOF
2709     fi
2710
2711 elif enabled sparc; then
2712
2713     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2714         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2715
2716 elif enabled x86; then
2717
2718     enable local_aligned_8 local_aligned_16
2719
2720     # check whether EBP is available on x86
2721     # As 'i' is stored on the stack, this program will crash
2722     # if the base pointer is used to access it because the
2723     # base pointer is cleared in the inline assembly code.
2724     check_exec_crash <<EOF && enable ebp_available
2725     volatile int i=0;
2726     __asm__ volatile (
2727         "xorl %%ebp, %%ebp"
2728     ::: "%ebp");
2729     return i;
2730 EOF
2731
2732     # check whether EBX is available on x86
2733     check_asm ebx_available '""::"b"(0)' &&
2734         check_asm ebx_available '"":::"%ebx"'
2735
2736     # check whether xmm clobbers are supported
2737     check_asm xmm_clobbers '"":::"%xmm0"'
2738
2739     # check whether binutils is new enough to compile SSSE3/MMX2
2740     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2741     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2742
2743     if ! disabled_any asm mmx yasm; then
2744         if check_cmd $yasmexe --version; then
2745             enabled x86_64 && yasm_extra="-m amd64"
2746             yasm_debug="-g dwarf2"
2747         elif check_cmd nasm -v; then
2748             yasmexe=nasm
2749             yasm_debug="-g -F dwarf"
2750             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2751         fi
2752
2753         YASMFLAGS="-f $objformat $yasm_extra"
2754         enabled pic               && append YASMFLAGS "-DPIC"
2755         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2756         case "$objformat" in
2757             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2758         esac
2759
2760         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2761             die "yasm not found, use --disable-yasm for a crippled build"
2762         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2763     fi
2764
2765     case "$cpu" in
2766         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2767             disable fast_clz
2768         ;;
2769     esac
2770
2771 fi
2772
2773 if enabled asm; then
2774     as=${gas:=$as}
2775     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2776         $nogas "GNU assembler not found, install gas-preprocessor"
2777 fi
2778
2779 check_ldflags -Wl,--as-needed
2780
2781 if check_func dlopen; then
2782     ldl=
2783 elif check_func dlopen -ldl; then
2784     ldl=-ldl
2785 fi
2786
2787 if enabled network; then
2788     check_type "sys/types.h sys/socket.h" socklen_t
2789     check_type netdb.h "struct addrinfo"
2790     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2791     check_type netinet/in.h "struct sockaddr_in6"
2792     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2793     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2794     # Prefer arpa/inet.h over winsock2
2795     if check_header arpa/inet.h ; then
2796         check_func closesocket
2797     elif check_header winsock2.h ; then
2798         check_func_headers winsock2.h closesocket -lws2 && \
2799             network_extralibs="-lws2" || \
2800         { check_func_headers winsock2.h closesocket -lws2_32 && \
2801             network_extralibs="-lws2_32"; }
2802         check_type ws2tcpip.h socklen_t
2803         check_type ws2tcpip.h "struct addrinfo"
2804         check_type ws2tcpip.h "struct ipv6_mreq"
2805         check_type ws2tcpip.h "struct sockaddr_in6"
2806         check_type ws2tcpip.h "struct sockaddr_storage"
2807         check_struct winsock2.h "struct sockaddr" sa_len
2808     else
2809         disable network
2810     fi
2811 fi
2812
2813 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2814 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2815
2816 check_func  fcntl
2817 check_func  fork
2818 check_func  getaddrinfo $network_extralibs
2819 check_func  gethrtime
2820 check_func  getrusage
2821 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2822 check_func  inet_aton $network_extralibs
2823 check_func  isatty
2824 check_func  localtime_r
2825 check_func  ${malloc_prefix}memalign            && enable memalign
2826 check_func  mkstemp
2827 check_func  mmap
2828 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2829 check_func  setrlimit
2830 check_func  strerror_r
2831 check_func  strptime
2832 check_func  strtok_r
2833 check_func_headers io.h setmode
2834 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2835 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2836 check_func_headers windows.h GetProcessTimes
2837 check_func_headers windows.h MapViewOfFile
2838 check_func_headers windows.h VirtualAlloc
2839
2840 check_header dlfcn.h
2841 check_header dxva2api.h
2842 check_header malloc.h
2843 check_header poll.h
2844 check_header sys/mman.h
2845 check_header sys/resource.h
2846 check_header sys/select.h
2847 check_header vdpau/vdpau.h
2848 check_header vdpau/vdpau_x11.h
2849 check_header X11/extensions/XvMClib.h
2850
2851 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2852
2853 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2854 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2855
2856 if ! disabled w32threads && ! enabled pthreads; then
2857     check_func _beginthreadex && enable w32threads
2858 fi
2859
2860 # check for some common methods of building with pthread support
2861 # do this before the optional library checks as some of them require pthreads
2862 if ! disabled pthreads && ! enabled w32threads; then
2863     enable pthreads
2864     if check_func pthread_create; then
2865         :
2866     elif check_func pthread_create -pthread; then
2867         add_cflags -pthread
2868         add_extralibs -pthread
2869     elif check_func pthread_create -pthreads; then
2870         add_cflags -pthreads
2871         add_extralibs -pthreads
2872     elif check_func pthread_create -lpthreadGC2; then
2873         add_extralibs -lpthreadGC2
2874     elif ! check_lib pthread.h pthread_create -lpthread; then
2875         disable pthreads
2876     fi
2877 fi
2878
2879 for thread in $THREADS_LIST; do
2880     if enabled $thread; then
2881         test -n "$thread_type" &&
2882             die "ERROR: Only one thread type must be selected." ||
2883             thread_type="$thread"
2884     fi
2885 done
2886
2887 check_lib math.h sin -lm && LIBM="-lm"
2888 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2889
2890 check_mathfunc exp2
2891 check_mathfunc exp2f
2892 check_mathfunc llrint
2893 check_mathfunc llrintf
2894 check_mathfunc log2
2895 check_mathfunc log2f
2896 check_mathfunc lrint
2897 check_mathfunc lrintf
2898 check_mathfunc round
2899 check_mathfunc roundf
2900 check_mathfunc trunc
2901 check_mathfunc truncf
2902
2903 # these are off by default, so fail if requested and not available
2904 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2905 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2906 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
2907 enabled libdirac   && require_pkg_config dirac                          \
2908     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2909     "dirac_decoder_init dirac_encoder_init"
2910 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2911 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2912 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2913 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2914 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2915 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2916 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2917 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2918 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2919 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
2920 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2921 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2922 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2923 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2924 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2925 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2926 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2927 enabled libvpx     && {
2928     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2929                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2930     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2931                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2932 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2933                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2934                         die "ERROR: libx264 version must be >= 0.118."; }
2935 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2936 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2937 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2938 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
2939                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
2940                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
2941                         die "ERROR: openssl not found"; }
2942
2943 # libdc1394 check
2944 if enabled libdc1394; then
2945     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2946         enable libdc1394_2; } ||
2947     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2948         enable libdc1394_1; } ||
2949     die "ERROR: No version of libdc1394 found "
2950 fi
2951
2952 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2953     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2954     enable sdl &&
2955     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2956 fi
2957
2958 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2959
2960 check_header linux/fb.h
2961 check_header linux/videodev.h
2962 check_header linux/videodev2.h
2963 check_header sys/videoio.h
2964
2965 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2966 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2967 # w32api 3.12 had it defined wrong
2968 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2969
2970 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2971 { check_header dev/bktr/ioctl_meteor.h &&
2972   check_header dev/bktr/ioctl_bt848.h; } ||
2973 { check_header machine/ioctl_meteor.h &&
2974   check_header machine/ioctl_bt848.h; } ||
2975 { check_header dev/video/meteor/ioctl_meteor.h &&
2976   check_header dev/video/bktr/ioctl_bt848.h; } ||
2977 check_header dev/ic/bt8xx.h
2978
2979 check_header sndio.h
2980 check_header sys/soundcard.h
2981 check_header soundcard.h
2982
2983 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2984
2985 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2986
2987 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2988
2989 enabled libcdio &&
2990     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
2991
2992 enabled x11grab                         &&
2993 check_header X11/Xlib.h                 &&
2994 check_header X11/extensions/XShm.h      &&
2995 check_header X11/extensions/Xfixes.h    &&
2996 check_func XOpenDisplay -lX11           &&
2997 check_func XShmCreateImage -lX11 -lXext &&
2998 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2999
3000 # check for VDA header
3001 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3002     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3003 fi
3004
3005 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3006 check_cpp_condition \
3007     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3008     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3009       disable vdpau; }
3010 fi
3011
3012 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3013
3014 # add some useful compiler flags if supported
3015 check_cflags -Wdeclaration-after-statement
3016 check_cflags -Wall
3017 check_cflags -Wno-parentheses
3018 check_cflags -Wno-switch
3019 check_cflags -Wno-format-zero-length
3020 check_cflags -Wdisabled-optimization
3021 check_cflags -Wpointer-arith
3022 check_cflags -Wredundant-decls
3023 check_cflags -Wno-pointer-sign
3024 check_cflags -Wcast-qual
3025 check_cflags -Wwrite-strings
3026 check_cflags -Wtype-limits
3027 check_cflags -Wundef
3028 check_cflags -Wmissing-prototypes
3029 check_cflags -Wstrict-prototypes
3030 enabled extra_warnings && check_cflags -Winline
3031
3032 # add some linker flags
3033 check_ldflags -Wl,--warn-common
3034 check_ldflags -Wl,-rpath-link=libpostproc:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3035 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3036
3037 echo "X{};" > $TMPV
3038 if test_ldflags -Wl,--version-script,$TMPV; then
3039     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3040     check_cc <<EOF && enable symver_asm_label
3041 void ff_foo(void) __asm__ ("av_foo@VERSION");
3042 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3043 EOF
3044     check_cc <<EOF && enable symver_gnu_asm
3045 __asm__(".symver ff_foo,av_foo@VERSION");
3046 void ff_foo(void) {}
3047 EOF
3048 fi
3049
3050 if [ -n "$optflags" ]; then
3051     add_cflags $optflags
3052 elif enabled small; then
3053     add_cflags $size_cflags
3054 elif enabled optimizations; then
3055     add_cflags $speed_cflags
3056 else
3057     add_cflags $noopt_cflags
3058 fi
3059 check_cflags -fno-math-errno
3060 check_cflags -fno-signed-zeros
3061
3062 if enabled icc; then
3063     # Just warnings, no remarks
3064     check_cflags -w1
3065     # -wd: Disable following warnings
3066     # 144, 167, 556: -Wno-pointer-sign
3067     # 1292: attribute "foo" ignored
3068     # 10006: ignoring unknown option -fno-signed-zeros
3069     # 10148: ignoring unknown option -Wno-parentheses
3070     # 10156: ignoring option '-W'; no argument required
3071     check_cflags -wd144,167,556,1292,10006,10148,10156
3072     # 11030: Warning unknown option --as-needed
3073     # 10156: ignoring option '-export'; no argument required
3074     check_ldflags -wd10156,11030
3075     # Allow to compile with optimizations
3076     check_ldflags -march=$cpu
3077     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3078     enable ebp_available
3079     if enabled x86_32; then
3080         test ${icc_version%%.*} -ge 11 && \
3081             check_cflags -falign-stack=maintain-16-byte || \
3082             disable aligned_stack
3083     fi
3084 elif enabled ccc; then
3085     # disable some annoying warnings
3086     add_cflags -msg_disable cvtu32to64
3087     add_cflags -msg_disable embedcomment
3088     add_cflags -msg_disable needconstext
3089     add_cflags -msg_disable nomainieee
3090     add_cflags -msg_disable ptrmismatch1
3091     add_cflags -msg_disable unreachcode
3092 elif enabled gcc; then
3093     check_cflags -fno-tree-vectorize
3094     check_cflags -Werror=implicit-function-declaration
3095     check_cflags -Werror=missing-prototypes
3096 elif enabled llvm_gcc; then
3097     check_cflags -mllvm -stack-alignment=16
3098 elif enabled clang; then
3099     check_cflags -mllvm -stack-alignment=16
3100     check_cflags -Qunused-arguments
3101 elif enabled armcc; then
3102     # 2523: use of inline assembler is deprecated
3103     add_cflags -W${armcc_opt},--diag_suppress=2523
3104     add_cflags -W${armcc_opt},--diag_suppress=1207
3105     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3106     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3107     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3108     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3109 elif enabled tms470; then
3110     add_cflags -pds=824 -pds=837
3111 elif enabled pathscale; then
3112     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3113 fi
3114
3115 enabled_any $THREADS_LIST      && enable threads
3116
3117 check_deps $CONFIG_LIST       \
3118            $CONFIG_EXTRA      \
3119            $HAVE_LIST         \
3120            $DECODER_LIST      \
3121            $ENCODER_LIST      \
3122            $HWACCEL_LIST      \
3123            $PARSER_LIST       \
3124            $BSF_LIST          \
3125            $DEMUXER_LIST      \
3126            $MUXER_LIST        \
3127            $FILTER_LIST       \
3128            $INDEV_LIST        \
3129            $OUTDEV_LIST       \
3130            $PROTOCOL_LIST     \
3131            $ACODEC_TESTS      \
3132            $VCODEC_TESTS      \
3133            $LAVF_TESTS        \
3134            $LAVFI_TESTS       \
3135            $SEEK_TESTS        \
3136
3137 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3138
3139 ! enabled_any memalign posix_memalign malloc_aligned &&
3140     enabled_any $need_memalign && enable memalign_hack
3141
3142 echo "install prefix            $prefix"
3143 echo "source path               $source_path"
3144 echo "C compiler                $cc"
3145 echo "ARCH                      $arch ($cpu)"
3146 if test "$build_suffix" != ""; then
3147     echo "build suffix              $build_suffix"
3148 fi
3149 if test "$extra_version" != ""; then
3150     echo "version string suffix     $extra_version"
3151 fi
3152 echo "big-endian                ${bigendian-no}"
3153 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3154 if enabled x86; then
3155     echo "${yasmexe}                      ${yasm-no}"
3156     echo "MMX enabled               ${mmx-no}"
3157     echo "MMX2 enabled              ${mmx2-no}"
3158     echo "3DNow! enabled            ${amd3dnow-no}"
3159     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3160     echo "SSE enabled               ${sse-no}"
3161     echo "SSSE3 enabled             ${ssse3-no}"
3162     echo "AVX enabled               ${avx-no}"
3163     echo "CMOV enabled              ${cmov-no}"
3164     echo "CMOV is fast              ${fast_cmov-no}"
3165     echo "EBX available             ${ebx_available-no}"
3166     echo "EBP available             ${ebp_available-no}"
3167 fi
3168 if enabled arm; then
3169     echo "ARMv5TE enabled           ${armv5te-no}"
3170     echo "ARMv6 enabled             ${armv6-no}"
3171     echo "ARMv6T2 enabled           ${armv6t2-no}"
3172     echo "ARM VFP enabled           ${armvfp-no}"
3173     echo "IWMMXT enabled            ${iwmmxt-no}"
3174     echo "NEON enabled              ${neon-no}"
3175 fi
3176 if enabled mips; then
3177     echo "MMI enabled               ${mmi-no}"
3178 fi
3179 if enabled ppc; then
3180     echo "AltiVec enabled           ${altivec-no}"
3181     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3182     echo "dcbzl available           ${dcbzl-no}"
3183 fi
3184 if enabled sparc; then
3185     echo "VIS enabled               ${vis-no}"
3186 fi
3187 echo "debug symbols             ${debug-no}"
3188 echo "optimize for size         ${small-no}"
3189 echo "optimizations             ${optimizations-no}"
3190 echo "static                    ${static-no}"
3191 echo "shared                    ${shared-no}"
3192 echo "postprocessing support    ${postproc-no}"
3193 echo "new filter support        ${avfilter-no}"
3194 echo "network support           ${network-no}"
3195 echo "threading support         ${thread_type-no}"
3196 echo "SDL support               ${sdl-no}"
3197 echo "Sun medialib support      ${mlib-no}"
3198 echo "libdxva2 enabled          ${dxva2-no}"
3199 echo "libva enabled             ${vaapi-no}"
3200 echo "libvdpau enabled          ${vdpau-no}"
3201 echo "AVISynth enabled          ${avisynth-no}"
3202 echo "frei0r enabled            ${frei0r-no}"
3203 echo "gnutls enabled            ${gnutls-no}"
3204 echo "libcdio support           ${libcdio-no}"
3205 echo "libdc1394 support         ${libdc1394-no}"
3206 echo "libdirac enabled          ${libdirac-no}"
3207 echo "libfaac enabled           ${libfaac-no}"
3208 echo "libgsm enabled            ${libgsm-no}"
3209 echo "libmp3lame enabled        ${libmp3lame-no}"
3210 echo "libnut enabled            ${libnut-no}"
3211 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3212 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3213 echo "libopencv support         ${libopencv-no}"
3214 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3215 echo "libpulse enabled          ${libpulse-no}"
3216 echo "librtmp enabled           ${librtmp-no}"
3217 echo "libschroedinger enabled   ${libschroedinger-no}"
3218 echo "libspeex enabled          ${libspeex-no}"
3219 echo "libtheora enabled         ${libtheora-no}"
3220 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3221 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3222 echo "libvorbis enabled         ${libvorbis-no}"
3223 echo "libvpx enabled            ${libvpx-no}"
3224 echo "libx264 enabled           ${libx264-no}"
3225 echo "libxavs enabled           ${libxavs-no}"
3226 echo "libxvid enabled           ${libxvid-no}"
3227 echo "openssl enabled           ${openssl-no}"
3228 echo "zlib enabled              ${zlib-no}"
3229 echo "bzlib enabled             ${bzlib-no}"
3230 echo
3231
3232 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3233     echo "Enabled ${type}s:"
3234     eval list=\$$(toupper $type)_LIST
3235     print_enabled '_*' $list | sort | pr -r -3 -t
3236     echo
3237 done
3238
3239 license="LGPL version 2.1 or later"
3240 if enabled nonfree; then
3241     license="nonfree and unredistributable"
3242 elif enabled gplv3; then
3243     license="GPL version 3 or later"
3244 elif enabled lgplv3; then
3245     license="LGPL version 3 or later"
3246 elif enabled gpl; then
3247     license="GPL version 2 or later"
3248 fi
3249
3250 echo "License: $license"
3251
3252 echo "Creating config.mak and config.h..."
3253
3254 test -e Makefile || $ln_s "$source_path/Makefile" .
3255
3256 config_files="$TMPH config.mak"
3257
3258 cat > config.mak <<EOF
3259 # Automatically generated by configure - do not modify!
3260 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3261 prefix=$prefix
3262 LIBDIR=\$(DESTDIR)$libdir
3263 SHLIBDIR=\$(DESTDIR)$shlibdir
3264 INCDIR=\$(DESTDIR)$incdir
3265 BINDIR=\$(DESTDIR)$bindir
3266 DATADIR=\$(DESTDIR)$datadir
3267 MANDIR=\$(DESTDIR)$mandir
3268 SRC_PATH=$source_path
3269 CC_IDENT=$cc_ident
3270 ARCH=$arch
3271 CC=$cc
3272 AS=$as
3273 LD=$ld
3274 DEPCC=$dep_cc
3275 YASM=$yasmexe
3276 YASMDEP=$yasmexe
3277 AR=$ar
3278 RANLIB=$ranlib
3279 LN_S=$ln_s
3280 CPPFLAGS=$CPPFLAGS
3281 CFLAGS=$CFLAGS
3282 ASFLAGS=$ASFLAGS
3283 AS_O=$CC_O
3284 CC_O=$CC_O
3285 DLLTOOL=$dlltool
3286 LDFLAGS=$LDFLAGS
3287 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3288 SHFLAGS=$SHFLAGS
3289 YASMFLAGS=$YASMFLAGS
3290 BUILDSUF=$build_suffix
3291 FULLNAME=$FULLNAME
3292 LIBPREF=$LIBPREF
3293 LIBSUF=$LIBSUF
3294 LIBNAME=$LIBNAME
3295 SLIBPREF=$SLIBPREF
3296 SLIBSUF=$SLIBSUF
3297 EXESUF=$EXESUF
3298 EXTRA_VERSION=$extra_version
3299 DEPFLAGS=$DEPFLAGS
3300 CCDEP=$CCDEP
3301 ASDEP=$ASDEP
3302 CC_DEPFLAGS=$CC_DEPFLAGS
3303 AS_DEPFLAGS=$AS_DEPFLAGS
3304 HOSTCC=$host_cc
3305 HOSTCFLAGS=$host_cflags
3306 HOSTEXESUF=$HOSTEXESUF
3307 HOSTLDFLAGS=$host_ldflags
3308 HOSTLIBS=$host_libs
3309 TARGET_EXEC=$target_exec
3310 TARGET_PATH=$target_path
3311 SDL_LIBS=$sdl_libs
3312 SDL_CFLAGS=$sdl_cflags
3313 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3314 EXTRALIBS=$extralibs
3315 INSTALL=install
3316 LIBTARGET=${LIBTARGET}
3317 SLIBNAME=${SLIBNAME}
3318 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3319 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3320 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3321 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3322 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3323 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3324 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3325 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3326 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3327 EOF
3328
3329 get_version(){
3330     name=$1
3331     file=$source_path/$2
3332     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3333     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3334     lcname=$(tolower $name)
3335     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3336     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3337 }
3338
3339 get_version LIBSWSCALE  libswscale/swscale.h
3340 get_version LIBPOSTPROC libpostproc/postprocess.h
3341 get_version LIBAVCODEC  libavcodec/version.h
3342 get_version LIBAVDEVICE libavdevice/avdevice.h
3343 get_version LIBAVFORMAT libavformat/version.h
3344 get_version LIBAVUTIL   libavutil/avutil.h
3345 get_version LIBAVFILTER libavfilter/avfilter.h
3346
3347 cat > $TMPH <<EOF
3348 /* Automatically generated by configure - do not modify! */
3349 #ifndef LIBAV_CONFIG_H
3350 #define LIBAV_CONFIG_H
3351 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3352 #define LIBAV_LICENSE "$(c_escape $license)"
3353 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3354 #define CC_TYPE "$cc_type"
3355 #define CC_VERSION $cc_version
3356 #define restrict $_restrict
3357 #define EXTERN_PREFIX "${extern_prefix}"
3358 #define EXTERN_ASM ${extern_prefix}
3359 #define SLIBSUF "$SLIBSUF"
3360 EOF
3361
3362 test -n "$malloc_prefix" &&
3363     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3364
3365 if enabled small || disabled optimizations; then
3366     echo "#undef  av_always_inline"  >> $TMPH
3367     if enabled small; then
3368         echo "#define av_always_inline inline"  >> $TMPH
3369     else
3370         echo "#define av_always_inline av_unused"  >> $TMPH
3371     fi
3372 fi
3373
3374 if enabled yasm; then
3375     append config_files $TMPASM
3376     printf '' >$TMPASM
3377 fi
3378
3379 print_config ARCH_   "$config_files" $ARCH_LIST
3380 print_config HAVE_   "$config_files" $HAVE_LIST
3381 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3382                                      $CONFIG_EXTRA      \
3383                                      $DECODER_LIST      \
3384                                      $ENCODER_LIST      \
3385                                      $HWACCEL_LIST      \
3386                                      $PARSER_LIST       \
3387                                      $BSF_LIST          \
3388                                      $DEMUXER_LIST      \
3389                                      $MUXER_LIST        \
3390                                      $FILTER_LIST       \
3391                                      $PROTOCOL_LIST     \
3392                                      $INDEV_LIST        \
3393                                      $OUTDEV_LIST       \
3394
3395 cat >>config.mak <<EOF
3396 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3397 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3398 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3399 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3400 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3401 EOF
3402
3403 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3404
3405 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3406 cp_if_changed $TMPH config.h
3407 touch .config
3408
3409 enabled yasm && cp_if_changed $TMPASM config.asm
3410
3411 cat > $TMPH <<EOF
3412 /* Generated by ffconf */
3413 #ifndef AVUTIL_AVCONFIG_H
3414 #define AVUTIL_AVCONFIG_H
3415 EOF
3416
3417 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3418
3419 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3420
3421 cp_if_changed $TMPH libavutil/avconfig.h
3422
3423 test -n "$WARNINGS" && printf "\n$WARNINGS"
3424
3425 # build pkg-config files
3426
3427 pkgconfig_generate(){
3428 name=$1
3429 shortname=${name#lib}${build_suffix}
3430 comment=$2
3431 version=$3
3432 libs=$4
3433 requires=$5
3434 enabled ${name#lib} || return 0
3435 mkdir -p $name
3436 cat <<EOF > $name/$name.pc
3437 prefix=$prefix
3438 exec_prefix=\${prefix}
3439 libdir=$libdir
3440 includedir=$incdir
3441
3442 Name: $name
3443 Description: $comment
3444 Version: $version
3445 Requires: $(enabled shared || echo $requires)
3446 Requires.private: $(enabled shared && echo $requires)
3447 Conflicts:
3448 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3449 Libs.private: $(enabled shared && echo $libs)
3450 Cflags: -I\${includedir}
3451 EOF
3452 cat <<EOF > $name/$name-uninstalled.pc
3453 prefix=
3454 exec_prefix=
3455 libdir=\${pcfiledir}
3456 includedir=${source_path}
3457
3458 Name: $name
3459 Description: $comment
3460 Version: $version
3461 Requires: $requires
3462 Conflicts:
3463 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3464 Cflags: -I\${includedir}
3465 EOF
3466 }
3467
3468 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3469 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3470 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3471 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3472 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3473 pkgconfig_generate libpostproc "Libav postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3474 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"