Drop unnecessary av_uninit attributes from some variable declarations.
[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-avconv         disable avconv build
84   --disable-avplay         disable avplay build
85   --disable-avprobe        disable avprobe build
86   --disable-avserver       disable avserver build
87   --disable-avdevice       disable libavdevice build
88   --disable-avcodec        disable libavcodec build
89   --disable-avformat       disable libavformat build
90   --disable-swscale        disable libswscale build
91   --enable-postproc        enable libpostproc build (deprecated) [no]
92   --disable-avfilter       disable video filter support [no]
93   --disable-pthreads       disable pthreads [auto]
94   --disable-w32threads     disable Win32 threads [auto]
95   --enable-x11grab         enable X11 grabbing [no]
96   --disable-network        disable network support [no]
97   --enable-gray            enable full grayscale support (slower color)
98   --disable-swscale-alpha  disable alpha channel support in swscale
99   --disable-fastdiv        disable table-based division
100   --enable-small           optimize for size instead of speed
101   --disable-aandct         disable AAN DCT code
102   --disable-dct            disable DCT code
103   --disable-fft            disable FFT code
104   --disable-golomb         disable Golomb code
105   --disable-huffman        disable Huffman code
106   --disable-lpc            disable LPC code
107   --disable-mdct           disable MDCT code
108   --disable-rdft           disable RDFT code
109   --enable-vaapi           enable VAAPI code
110   --enable-vda             enable VDA code
111   --enable-vdpau           enable VDPAU code
112   --disable-dxva2          disable DXVA2 code
113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
115   --disable-safe-bitstream-reader
116                            disable buffer boundary checking in bitreaders
117                            (faster, but may crash)
118   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
119   --disable-everything     disable all components listed below
120   --disable-encoder=NAME   disable encoder NAME
121   --enable-encoder=NAME    enable encoder NAME
122   --disable-encoders       disable all encoders
123   --disable-decoder=NAME   disable decoder NAME
124   --enable-decoder=NAME    enable decoder NAME
125   --disable-decoders       disable all decoders
126   --disable-hwaccel=NAME   disable hwaccel NAME
127   --enable-hwaccel=NAME    enable hwaccel NAME
128   --disable-hwaccels       disable all hwaccels
129   --disable-muxer=NAME     disable muxer NAME
130   --enable-muxer=NAME      enable muxer NAME
131   --disable-muxers         disable all muxers
132   --disable-demuxer=NAME   disable demuxer NAME
133   --enable-demuxer=NAME    enable demuxer NAME
134   --disable-demuxers       disable all demuxers
135   --enable-parser=NAME     enable parser NAME
136   --disable-parser=NAME    disable parser NAME
137   --disable-parsers        disable all parsers
138   --enable-bsf=NAME        enable bitstream filter NAME
139   --disable-bsf=NAME       disable bitstream filter NAME
140   --disable-bsfs           disable all bitstream filters
141   --enable-protocol=NAME   enable protocol NAME
142   --disable-protocol=NAME  disable protocol NAME
143   --disable-protocols      disable all protocols
144   --disable-indev=NAME     disable input device NAME
145   --disable-outdev=NAME    disable output device NAME
146   --disable-indevs         disable input devices
147   --disable-outdevs        disable output devices
148   --disable-devices        disable all devices
149   --enable-filter=NAME     enable filter NAME
150   --disable-filter=NAME    disable filter NAME
151   --disable-filters        disable all filters
152   --list-decoders          show all available decoders
153   --list-encoders          show all available encoders
154   --list-hwaccels          show all available hardware accelerators
155   --list-muxers            show all available muxers
156   --list-demuxers          show all available demuxers
157   --list-parsers           show all available parsers
158   --list-protocols         show all available protocols
159   --list-bsfs              show all available bitstream filters
160   --list-indevs            show all available input devices
161   --list-outdevs           show all available output devices
162   --list-filters           show all available filters
163
164 External library support:
165   --enable-avisynth        enable reading of AVISynth script files [no]
166   --enable-bzlib           enable bzlib [autodetect]
167   --enable-frei0r          enable frei0r video filtering
168   --enable-gnutls          enable gnutls [no]
169   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
170   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
171   --enable-libopencv       enable video filtering via libopencv [no]
172   --enable-libcdio         enable audio CD grabbing with libcdio
173   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
174                            and libraw1394 [no]
175   --enable-libdirac        enable Dirac support via libdirac [no]
176   --enable-libfaac         enable FAAC support via libfaac [no]
177   --enable-libfreetype     enable libfreetype [no]
178   --enable-libgsm          enable GSM support via libgsm [no]
179   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
180   --enable-libnut          enable NUT (de)muxing via libnut,
181                            native (de)muxer exists [no]
182   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
183   --enable-libpulse        enable Pulseaudio input via libpulse [no]
184   --enable-librtmp         enable RTMP[E] support via librtmp [no]
185   --enable-libschroedinger enable Dirac support via libschroedinger [no]
186   --enable-libspeex        enable Speex support via libspeex [no]
187   --enable-libtheora       enable Theora encoding via libtheora [no]
188   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
189   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
190   --enable-libvorbis       enable Vorbis encoding via libvorbis,
191                            native implementation exists [no]
192   --enable-libvpx          enable VP8 support via libvpx [no]
193   --enable-libx264         enable H.264 encoding via x264 [no]
194   --enable-libxavs         enable AVS encoding via xavs [no]
195   --enable-libxvid         enable Xvid encoding via xvidcore,
196                            native MPEG-4/Xvid encoder exists [no]
197   --enable-openssl         enable openssl [no]
198   --enable-zlib            enable zlib [autodetect]
199
200 Advanced options (experts only):
201   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
202   --enable-cross-compile   assume a cross-compiler is used
203   --sysroot=PATH           root of cross-build tree
204   --sysinclude=PATH        location of cross-build system headers
205   --target-os=OS           compiler targets OS [$target_os]
206   --target-exec=CMD        command to run executables on target
207   --target-path=DIR        path to view of build directory on target
208   --nm=NM                  use nm tool
209   --ar=AR                  use archive tool AR [$ar_default]
210   --as=AS                  use assembler AS [$as_default]
211   --cc=CC                  use C compiler CC [$cc_default]
212   --ld=LD                  use linker LD
213   --host-cc=HOSTCC         use host C compiler HOSTCC
214   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
215   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
216   --host-libs=HLIBS        use libs HLIBS when linking for host
217   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
218   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
219   --extra-libs=ELIBS       add ELIBS [$ELIBS]
220   --extra-version=STRING   version string suffix []
221   --build-suffix=SUFFIX    library name suffix []
222   --arch=ARCH              select architecture [$arch]
223   --cpu=CPU                select the minimum required CPU (affects
224                            instruction selection, may crash on older CPUs)
225   --disable-asm            disable all assembler optimizations
226   --disable-altivec        disable AltiVec optimizations
227   --disable-amd3dnow       disable 3DNow! optimizations
228   --disable-amd3dnowext    disable 3DNow! extended optimizations
229   --disable-mmx            disable MMX optimizations
230   --disable-mmx2           disable MMX2 optimizations
231   --disable-sse            disable SSE optimizations
232   --disable-ssse3          disable SSSE3 optimizations
233   --disable-avx            disable AVX optimizations
234   --disable-armv5te        disable armv5te optimizations
235   --disable-armv6          disable armv6 optimizations
236   --disable-armv6t2        disable armv6t2 optimizations
237   --disable-armvfp         disable ARM VFP optimizations
238   --disable-iwmmxt         disable iwmmxt optimizations
239   --disable-mmi            disable MMI optimizations
240   --disable-neon           disable NEON optimizations
241   --disable-vis            disable VIS optimizations
242   --disable-yasm           disable use of yasm assembler
243   --enable-pic             build position-independent code
244   --malloc-prefix=PFX      prefix malloc and related names with PFX
245   --enable-sram            allow use of on-chip SRAM
246   --disable-symver         disable symbol versioning
247   --optflags               override optimization-related compiler flags
248
249 Developer options (useful when working on Libav itself):
250   --disable-debug          disable debugging symbols
251   --enable-debug=LEVEL     set the debug level [$debuglevel]
252   --disable-optimizations  disable compiler optimizations
253   --enable-extra-warnings  enable more compiler warnings
254   --samples=PATH           location of test samples for FATE, if not set use
255                            \$FATE_SAMPLES at make invocation time.
256   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
257                            should be used only for debugging purposes)
258
259 NOTE: Object files are built at the place where configure is launched.
260 EOF
261   exit 0
262 }
263
264 quotes='""'
265
266 log(){
267     echo "$@" >> $logfile
268 }
269
270 log_file(){
271     log BEGIN $1
272     pr -n -t $1 >> $logfile
273     log END $1
274 }
275
276 echolog(){
277     log "$@"
278     echo "$@"
279 }
280
281 warn(){
282     log "WARNING: $*"
283     WARNINGS="${WARNINGS}WARNING: $*\n"
284 }
285
286 die(){
287     echolog "$@"
288     cat <<EOF
289
290 If you think configure made a mistake, make sure you are using the latest
291 version from Git.  If the latest version fails, report the problem to the
292 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
293 EOF
294     if disabled logging; then
295         cat <<EOF
296 Rerun configure with logging enabled (do not use --disable-logging), and
297 include the log this produces with your report.
298 EOF
299     else
300 cat <<EOF
301 Include the log file "$logfile" produced by configure as this will help
302 solving the problem.
303 EOF
304     fi
305     exit 1
306 }
307
308 # Avoid locale weirdness, besides we really just want to translate ASCII.
309 toupper(){
310     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
311 }
312
313 tolower(){
314     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
315 }
316
317 c_escape(){
318     echo "$*" | sed 's/["\\]/\\\0/g'
319 }
320
321 sh_quote(){
322     v=$(echo "$1" | sed "s/'/'\\\\''/g")
323     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
324     echo "$v"
325 }
326
327 cleanws(){
328     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
329 }
330
331 filter(){
332     pat=$1
333     shift
334     for v; do
335         eval "case $v in $pat) echo $v ;; esac"
336     done
337 }
338
339 filter_out(){
340     pat=$1
341     shift
342     for v; do
343         eval "case $v in $pat) ;; *) echo $v ;; esac"
344     done
345 }
346
347 map(){
348     m=$1
349     shift
350     for v; do eval $m; done
351 }
352
353 set_all(){
354     value=$1
355     shift
356     for var in $*; do
357         eval $var=$value
358     done
359 }
360
361 set_weak(){
362     value=$1
363     shift
364     for var; do
365         eval : \${$var:=$value}
366     done
367 }
368
369 set_safe(){
370     var=$1
371     shift
372     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
373 }
374
375 get_safe(){
376     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
377 }
378
379 pushvar(){
380     for var in $*; do
381         eval level=\${${var}_level:=0}
382         eval ${var}_${level}="\$$var"
383         eval ${var}_level=$(($level+1))
384     done
385 }
386
387 popvar(){
388     for var in $*; do
389         eval level=\${${var}_level:-0}
390         test $level = 0 && continue
391         eval level=$(($level-1))
392         eval $var="\${${var}_${level}}"
393         eval ${var}_level=$level
394         eval unset ${var}_${level}
395     done
396 }
397
398 enable(){
399     set_all yes $*
400 }
401
402 disable(){
403     set_all no $*
404 }
405
406 enable_weak(){
407     set_weak yes $*
408 }
409
410 disable_weak(){
411     set_weak no $*
412 }
413
414 enable_safe(){
415     for var; do
416         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
417     done
418 }
419
420 disable_safe(){
421     for var; do
422         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
423     done
424 }
425
426 do_enable_deep(){
427     for var; do
428         enabled $var && continue
429         eval sel="\$${var}_select"
430         eval sgs="\$${var}_suggest"
431         pushvar var sgs
432         enable_deep $sel
433         popvar sgs
434         enable_deep_weak $sgs
435         popvar var
436     done
437 }
438
439 enable_deep(){
440     do_enable_deep $*
441     enable $*
442 }
443
444 enable_deep_weak(){
445     do_enable_deep $*
446     enable_weak $*
447 }
448
449 enabled(){
450     test "${1#!}" = "$1" && op== || op=!=
451     eval test "x\$${1#!}" $op "xyes"
452 }
453
454 disabled(){
455     test "${1#!}" = "$1" && op== || op=!=
456     eval test "x\$${1#!}" $op "xno"
457 }
458
459 enabled_all(){
460     for opt; do
461         enabled $opt || return 1
462     done
463 }
464
465 disabled_all(){
466     for opt; do
467         disabled $opt || return 1
468     done
469 }
470
471 enabled_any(){
472     for opt; do
473         enabled $opt && return 0
474     done
475 }
476
477 disabled_any(){
478     for opt; do
479         disabled $opt && return 0
480     done
481     return 1
482 }
483
484 set_default(){
485     for opt; do
486         eval : \${$opt:=\$${opt}_default}
487     done
488 }
489
490 is_in(){
491     value=$1
492     shift
493     for var in $*; do
494         [ $var = $value ] && return 0
495     done
496     return 1
497 }
498
499 check_deps(){
500     for cfg; do
501         cfg="${cfg#!}"
502         enabled ${cfg}_checking && die "Circular dependency for $cfg."
503         disabled ${cfg}_checking && continue
504         enable ${cfg}_checking
505
506         eval dep_all="\$${cfg}_deps"
507         eval dep_any="\$${cfg}_deps_any"
508         eval dep_sel="\$${cfg}_select"
509         eval dep_sgs="\$${cfg}_suggest"
510         eval dep_ifa="\$${cfg}_if"
511         eval dep_ifn="\$${cfg}_if_any"
512
513         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
514         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
515         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
516
517         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
518         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
519         enabled_all  $dep_all || disable $cfg
520         enabled_any  $dep_any || disable $cfg
521         disabled_any $dep_sel && disable $cfg
522
523         if enabled $cfg; then
524             eval dep_extralibs="\$${cfg}_extralibs"
525             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
526             enable_deep $dep_sel
527             enable_deep_weak $dep_sgs
528         fi
529
530         disable ${cfg}_checking
531     done
532 }
533
534 print_config_h(){
535     enabled $1 && v=1 || v=0
536     echo "#define $2 $v"
537 }
538
539 print_config_mak(){
540     enabled $1 && v= || v=!
541     echo "$v$2=yes"
542 }
543
544 print_config_asm(){
545     enabled $1 && v=1 || v=0
546     echo "%define $2 $v"
547 }
548
549 print_config(){
550     pfx=$1
551     files=$2
552     shift 2
553     for cfg; do
554         ucname="$(toupper $cfg)"
555         for f in $files; do
556             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
557         done
558     done
559 }
560
561 print_enabled(){
562     test "$1" = -n && end=" " && shift || end="\n"
563     suf=$1
564     shift
565     for v; do
566         enabled $v && printf "%s$end" ${v%$suf};
567     done
568 }
569
570 append(){
571     var=$1
572     shift
573     eval "$var=\"\$$var $*\""
574 }
575
576 prepend(){
577     var=$1
578     shift
579     eval "$var=\"$* \$$var\""
580 }
581
582 add_cppflags(){
583     append CPPFLAGS $($filter_cppflags "$@")
584 }
585
586 add_cflags(){
587     append CFLAGS $($filter_cflags "$@")
588 }
589
590 add_asflags(){
591     append ASFLAGS $($filter_asflags "$@")
592 }
593
594 add_ldflags(){
595     append LDFLAGS "$@"
596 }
597
598 add_extralibs(){
599     prepend extralibs "$@"
600 }
601
602 check_cmd(){
603     log "$@"
604     "$@" >> $logfile 2>&1
605 }
606
607 check_cc(){
608     log check_cc "$@"
609     cat > $TMPC
610     log_file $TMPC
611     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
612 }
613
614 check_cpp(){
615     log check_cpp "$@"
616     cat > $TMPC
617     log_file $TMPC
618     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
619 }
620
621 check_as(){
622     log check_as "$@"
623     cat > $TMPC
624     log_file $TMPC
625     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
626 }
627
628 check_asm(){
629     log check_asm "$@"
630     name="$1"
631     code="$2"
632     shift 2
633     disable $name
634     check_as "$@" <<EOF && enable $name
635 void foo(void){ __asm__ volatile($code); }
636 EOF
637 }
638
639 check_yasm(){
640     log check_yasm "$@"
641     echo "$1" > $TMPS
642     log_file $TMPS
643     shift 1
644     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
645 }
646
647 check_ld(){
648     log check_ld "$@"
649     flags=''
650     libs=''
651     for f; do
652         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
653     done
654     check_cc $($filter_cflags $flags) || return
655     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
656 }
657
658 check_cppflags(){
659     log check_cppflags "$@"
660     set -- $($filter_cppflags "$@")
661     check_cc "$@" <<EOF && append CPPFLAGS "$@"
662 int x;
663 EOF
664 }
665
666 check_cflags(){
667     log check_cflags "$@"
668     set -- $($filter_cflags "$@")
669     check_cc "$@" <<EOF && append CFLAGS "$@"
670 int x;
671 EOF
672 }
673
674 test_ldflags(){
675     log test_ldflags "$@"
676     check_ld "$@" <<EOF
677 int main(void){ return 0; }
678 EOF
679 }
680
681 check_ldflags(){
682     log check_ldflags "$@"
683     test_ldflags "$@" && add_ldflags "$@"
684 }
685
686 check_header(){
687     log check_header "$@"
688     header=$1
689     shift
690     disable_safe $header
691     check_cpp "$@" <<EOF && enable_safe $header
692 #include <$header>
693 int x;
694 EOF
695 }
696
697 check_func(){
698     log check_func "$@"
699     func=$1
700     shift
701     disable $func
702     check_ld "$@" <<EOF && enable $func
703 extern int $func();
704 int main(void){ $func(); }
705 EOF
706 }
707
708 check_mathfunc(){
709     log check_mathfunc "$@"
710     func=$1
711     shift
712     disable $func
713     check_ld "$@" <<EOF && enable $func
714 #include <math.h>
715 float foo(float f) { return $func(f); }
716 int main(void){ return 0; }
717 EOF
718 }
719
720 check_func_headers(){
721     log check_func_headers "$@"
722     headers=$1
723     funcs=$2
724     shift 2
725     {
726         for hdr in $headers; do
727             echo "#include <$hdr>"
728         done
729         for func in $funcs; do
730             echo "long check_$func(void) { return (long) $func; }"
731         done
732         echo "int main(void) { return 0; }"
733     } | check_ld "$@" && enable $funcs && enable_safe $headers
734 }
735
736 check_cpp_condition(){
737     log check_cpp_condition "$@"
738     header=$1
739     condition=$2
740     shift 2
741     check_cpp $($filter_cppflags "$@") <<EOF
742 #include <$header>
743 #if !($condition)
744 #error "unsatisfied condition: $condition"
745 #endif
746 EOF
747 }
748
749 check_lib(){
750     log check_lib "$@"
751     header="$1"
752     func="$2"
753     shift 2
754     check_header $header && check_func $func "$@" && add_extralibs "$@"
755 }
756
757 check_lib2(){
758     log check_lib2 "$@"
759     headers="$1"
760     funcs="$2"
761     shift 2
762     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
763 }
764
765 check_pkg_config(){
766     log check_pkg_config "$@"
767     pkg="$1"
768     headers="$2"
769     funcs="$3"
770     shift 3
771     $pkg_config --exists $pkg || return
772     pkg_cflags=$($pkg_config --cflags $pkg)
773     pkg_libs=$($pkg_config --libs $pkg)
774     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
775         set_safe ${pkg}_cflags $pkg_cflags   &&
776         set_safe ${pkg}_libs   $pkg_libs
777 }
778
779 check_exec(){
780     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
781 }
782
783 check_exec_crash(){
784     code=$(cat)
785
786     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
787     # are safe but may not be available everywhere.  Thus we use
788     # raise(SIGTERM) instead.  The check is run in a subshell so we
789     # can redirect the "Terminated" message from the shell.  SIGBUS
790     # is not defined by standard C so it is used conditionally.
791
792     (check_exec "$@") >> $logfile 2>&1 <<EOF
793 #include <signal.h>
794 static void sighandler(int sig){
795     raise(SIGTERM);
796 }
797 int main(void){
798     signal(SIGILL, sighandler);
799     signal(SIGFPE, sighandler);
800     signal(SIGSEGV, sighandler);
801 #ifdef SIGBUS
802     signal(SIGBUS, sighandler);
803 #endif
804     { $code }
805 }
806 EOF
807 }
808
809 check_type(){
810     log check_type "$@"
811     headers=$1
812     type=$2
813     shift 2
814     disable_safe "$type"
815     incs=""
816     for hdr in $headers; do
817         incs="$incs
818 #include <$hdr>"
819     done
820     check_cc "$@" <<EOF && enable_safe "$type"
821 $incs
822 $type v;
823 EOF
824 }
825
826 check_struct(){
827     log check_type "$@"
828     headers=$1
829     struct=$2
830     member=$3
831     shift 3
832     disable_safe "${struct}_${member}"
833     incs=""
834     for hdr in $headers; do
835         incs="$incs
836 #include <$hdr>"
837     done
838     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
839 $incs
840 const void *p = &(($struct *)0)->$member;
841 EOF
842 }
843
844 require(){
845     name="$1"
846     header="$2"
847     func="$3"
848     shift 3
849     check_lib $header $func "$@" || die "ERROR: $name not found"
850 }
851
852 require2(){
853     name="$1"
854     headers="$2"
855     func="$3"
856     shift 3
857     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
858 }
859
860 require_pkg_config(){
861     pkg="$1"
862     check_pkg_config "$@" || die "ERROR: $pkg not found"
863     add_cflags    $(get_safe ${pkg}_cflags)
864     add_extralibs $(get_safe ${pkg}_libs)
865 }
866
867 check_host_cc(){
868     log check_host_cc "$@"
869     cat > $TMPC
870     log_file $TMPC
871     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
872 }
873
874 check_host_cflags(){
875     log check_host_cflags "$@"
876     check_host_cc "$@" <<EOF && append host_cflags "$@"
877 int x;
878 EOF
879 }
880
881 apply(){
882     file=$1
883     shift
884     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
885 }
886
887 cp_if_changed(){
888     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
889     mkdir -p "$(dirname $2)"
890     cp -f "$1" "$2"
891 }
892
893 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
894 # system-dependent things.
895
896 COMPONENT_LIST="
897     bsfs
898     decoders
899     demuxers
900     encoders
901     filters
902     hwaccels
903     indevs
904     muxers
905     outdevs
906     parsers
907     protocols
908 "
909
910 PROGRAM_LIST="
911     avconv
912     avplay
913     avprobe
914     avserver
915 "
916
917 CONFIG_LIST="
918     $COMPONENT_LIST
919     $PROGRAM_LIST
920     aandct
921     ac3dsp
922     avcodec
923     avdevice
924     avfilter
925     avformat
926     avisynth
927     bzlib
928     dct
929     doc
930     dwt
931     dxva2
932     fastdiv
933     fft
934     frei0r
935     gnutls
936     golomb
937     gpl
938     gray
939     h264chroma
940     h264dsp
941     h264pred
942     hardcoded_tables
943     huffman
944     libcdio
945     libdc1394
946     libdirac
947     libfaac
948     libfreetype
949     libgsm
950     libmp3lame
951     libnut
952     libopencore_amrnb
953     libopencore_amrwb
954     libopencv
955     libopenjpeg
956     libpulse
957     librtmp
958     libschroedinger
959     libspeex
960     libtheora
961     libvo_aacenc
962     libvo_amrwbenc
963     libvorbis
964     libvpx
965     libx264
966     libxavs
967     libxvid
968     lpc
969     lsp
970     mdct
971     memalign_hack
972     mpegaudiodsp
973     network
974     nonfree
975     openssl
976     pic
977     postproc
978     rdft
979     rtpdec
980     runtime_cpudetect
981     safe_bitstream_reader
982     shared
983     sinewin
984     small
985     sram
986     static
987     swscale
988     swscale_alpha
989     thumb
990     vaapi
991     vda
992     vdpau
993     version3
994     xmm_clobber_test
995     x11grab
996     zlib
997 "
998
999 THREADS_LIST='
1000     pthreads
1001     w32threads
1002 '
1003
1004 ARCH_LIST='
1005     alpha
1006     arm
1007     avr32
1008     avr32_ap
1009     avr32_uc
1010     bfin
1011     ia64
1012     m68k
1013     mips
1014     mips64
1015     parisc
1016     ppc
1017     ppc64
1018     s390
1019     sh4
1020     sparc
1021     sparc64
1022     tomi
1023     x86
1024     x86_32
1025     x86_64
1026 '
1027
1028 ARCH_EXT_LIST='
1029     altivec
1030     amd3dnow
1031     amd3dnowext
1032     armv5te
1033     armv6
1034     armv6t2
1035     armvfp
1036     avx
1037     iwmmxt
1038     mmi
1039     mmx
1040     mmx2
1041     neon
1042     ppc4xx
1043     sse
1044     ssse3
1045     vfpv3
1046     vis
1047 '
1048
1049 HAVE_LIST_PUB='
1050     bigendian
1051     fast_unaligned
1052 '
1053
1054 HAVE_LIST="
1055     $ARCH_EXT_LIST
1056     $HAVE_LIST_PUB
1057     $THREADS_LIST
1058     aligned_stack
1059     alsa_asoundlib_h
1060     altivec_h
1061     arpa_inet_h
1062     asm_mod_y
1063     attribute_may_alias
1064     attribute_packed
1065     closesocket
1066     cmov
1067     dcbzl
1068     dev_bktr_ioctl_bt848_h
1069     dev_bktr_ioctl_meteor_h
1070     dev_ic_bt8xx_h
1071     dev_video_bktr_ioctl_bt848_h
1072     dev_video_meteor_ioctl_meteor_h
1073     dlfcn_h
1074     dlopen
1075     dos_paths
1076     ebp_available
1077     ebx_available
1078     exp2
1079     exp2f
1080     fast_64bit
1081     fast_clz
1082     fast_cmov
1083     fcntl
1084     fork
1085     getaddrinfo
1086     gethrtime
1087     GetProcessAffinityMask
1088     GetProcessMemoryInfo
1089     GetProcessTimes
1090     getrusage
1091     gnu_as
1092     ibm_asm
1093     inet_aton
1094     inline_asm
1095     isatty
1096     ldbrx
1097     libdc1394_1
1098     libdc1394_2
1099     llrint
1100     llrintf
1101     local_aligned_16
1102     local_aligned_8
1103     localtime_r
1104     log2
1105     log2f
1106     loongson
1107     lrint
1108     lrintf
1109     lzo1x_999_compress
1110     machine_ioctl_bt848_h
1111     machine_ioctl_meteor_h
1112     malloc_h
1113     MapViewOfFile
1114     memalign
1115     mkstemp
1116     mmap
1117     poll_h
1118     posix_memalign
1119     round
1120     roundf
1121     sched_getaffinity
1122     sdl
1123     sdl_video_size
1124     setmode
1125     setrlimit
1126     sndio_h
1127     socklen_t
1128     soundcard_h
1129     strerror_r
1130     strptime
1131     strtok_r
1132     struct_addrinfo
1133     struct_ipv6_mreq
1134     struct_rusage_ru_maxrss
1135     struct_sockaddr_in6
1136     struct_sockaddr_sa_len
1137     struct_sockaddr_storage
1138     struct_v4l2_frmivalenum_discrete
1139     symver
1140     symver_asm_label
1141     symver_gnu_asm
1142     sysconf
1143     sysctl
1144     sys_mman_h
1145     sys_param_h
1146     sys_resource_h
1147     sys_select_h
1148     sys_soundcard_h
1149     sys_videoio_h
1150     threads
1151     trunc
1152     truncf
1153     vfp_args
1154     VirtualAlloc
1155     winsock2_h
1156     xform_asm
1157     xmm_clobbers
1158     yasm
1159 "
1160
1161 # options emitted with CONFIG_ prefix but not available on command line
1162 CONFIG_EXTRA="
1163     avutil
1164     gplv3
1165     lgplv3
1166 "
1167
1168 CMDLINE_SELECT="
1169     $ARCH_EXT_LIST
1170     $CONFIG_LIST
1171     $THREADS_LIST
1172     asm
1173     cross_compile
1174     debug
1175     extra_warnings
1176     logging
1177     optimizations
1178     symver
1179     yasm
1180 "
1181
1182 PATHS_LIST='
1183     bindir
1184     datadir
1185     incdir
1186     libdir
1187     mandir
1188     prefix
1189     shlibdir
1190 '
1191
1192 CMDLINE_SET="
1193     $PATHS_LIST
1194     ar
1195     arch
1196     as
1197     build_suffix
1198     cc
1199     cpu
1200     cross_prefix
1201     dep_cc
1202     extra_version
1203     host_cc
1204     host_cflags
1205     host_ldflags
1206     host_libs
1207     host_os
1208     ld
1209     logfile
1210     malloc_prefix
1211     nm
1212     optflags
1213     pkg_config
1214     samples
1215     sysinclude
1216     sysroot
1217     target_exec
1218     target_os
1219     target_path
1220 "
1221
1222 CMDLINE_APPEND="
1223     extra_cflags
1224 "
1225
1226 # code dependency declarations
1227
1228 # architecture extensions
1229
1230 armv5te_deps="arm"
1231 armv6_deps="arm"
1232 armv6t2_deps="arm"
1233 armvfp_deps="arm"
1234 iwmmxt_deps="arm"
1235 neon_deps="arm"
1236 vfpv3_deps="armvfp"
1237
1238 mmi_deps="mips"
1239
1240 altivec_deps="ppc"
1241 ppc4xx_deps="ppc"
1242
1243 vis_deps="sparc"
1244
1245 x86_64_suggest="cmov fast_cmov"
1246 amd3dnow_deps="mmx"
1247 amd3dnowext_deps="amd3dnow"
1248 mmx_deps="x86"
1249 mmx2_deps="mmx"
1250 sse_deps="mmx"
1251 ssse3_deps="sse"
1252 avx_deps="ssse3"
1253
1254 aligned_stack_if_any="ppc x86"
1255 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1256 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1257 fast_unaligned_if_any="armv6 ppc x86"
1258
1259 inline_asm_deps="!tms470"
1260 need_memalign="altivec neon sse"
1261
1262 symver_if_any="symver_asm_label symver_gnu_asm"
1263
1264 # subsystems
1265 dct_select="rdft"
1266 mdct_select="fft"
1267 rdft_select="fft"
1268 mpegaudiodsp_select="dct"
1269
1270 # decoders / encoders / hardware accelerators
1271 aac_decoder_select="mdct sinewin"
1272 aac_encoder_select="mdct sinewin"
1273 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1274 ac3_decoder_select="mdct ac3dsp ac3_parser"
1275 ac3_encoder_select="mdct ac3dsp"
1276 ac3_fixed_encoder_select="mdct ac3dsp"
1277 alac_encoder_select="lpc"
1278 amrnb_decoder_select="lsp"
1279 amrwb_decoder_select="lsp"
1280 atrac1_decoder_select="mdct sinewin"
1281 atrac3_decoder_select="mdct"
1282 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1283 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1284 cavs_decoder_select="golomb"
1285 cook_decoder_select="mdct sinewin"
1286 cscd_decoder_suggest="zlib"
1287 dca_decoder_select="mdct"
1288 dnxhd_encoder_select="aandct"
1289 dxa_decoder_select="zlib"
1290 eac3_decoder_select="ac3_decoder"
1291 eac3_encoder_select="mdct ac3dsp"
1292 eamad_decoder_select="aandct"
1293 eatgq_decoder_select="aandct"
1294 eatqi_decoder_select="aandct"
1295 ffv1_decoder_select="golomb"
1296 flac_decoder_select="golomb"
1297 flac_encoder_select="golomb lpc"
1298 flashsv_decoder_select="zlib"
1299 flashsv_encoder_select="zlib"
1300 flashsv2_decoder_select="zlib"
1301 flv_decoder_select="h263_decoder"
1302 flv_encoder_select="h263_encoder"
1303 fraps_decoder_select="huffman"
1304 h261_encoder_select="aandct"
1305 h263_decoder_select="h263_parser"
1306 h263_encoder_select="aandct"
1307 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1308 h263i_decoder_select="h263_decoder"
1309 h263p_encoder_select="h263_encoder"
1310 h264_decoder_select="golomb h264chroma h264dsp h264pred"
1311 h264_dxva2_hwaccel_deps="dxva2api_h"
1312 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1313 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1314 h264_vda_hwaccel_select="vda h264_decoder"
1315 h264_vdpau_decoder_select="vdpau h264_decoder"
1316 imc_decoder_select="fft mdct sinewin"
1317 jpegls_decoder_select="golomb"
1318 jpegls_encoder_select="golomb"
1319 ljpeg_encoder_select="aandct"
1320 loco_decoder_select="golomb"
1321 mjpeg_encoder_select="aandct"
1322 mlp_decoder_select="mlp_parser"
1323 mp1_decoder_select="mpegaudiodsp"
1324 mp1float_decoder_select="mpegaudiodsp"
1325 mp2_decoder_select="mpegaudiodsp"
1326 mp2float_decoder_select="mpegaudiodsp"
1327 mp3_decoder_select="mpegaudiodsp"
1328 mp3adu_decoder_select="mpegaudiodsp"
1329 mp3adufloat_decoder_select="mpegaudiodsp"
1330 mp3float_decoder_select="mpegaudiodsp"
1331 mp3on4_decoder_select="mpegaudiodsp"
1332 mp3on4float_decoder_select="mpegaudiodsp"
1333 mpc7_decoder_select="mpegaudiodsp"
1334 mpc8_decoder_select="mpegaudiodsp"
1335 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1336 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1337 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1338 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1339 mpeg1video_encoder_select="aandct"
1340 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1341 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1342 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1343 mpeg2video_encoder_select="aandct"
1344 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1345 mpeg4_encoder_select="h263_encoder"
1346 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1347 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1348 msmpeg4v1_decoder_select="h263_decoder"
1349 msmpeg4v1_encoder_select="h263_encoder"
1350 msmpeg4v2_decoder_select="h263_decoder"
1351 msmpeg4v2_encoder_select="h263_encoder"
1352 msmpeg4v3_decoder_select="h263_decoder"
1353 msmpeg4v3_encoder_select="h263_encoder"
1354 nellymoser_decoder_select="mdct sinewin"
1355 nellymoser_encoder_select="mdct sinewin"
1356 png_decoder_select="zlib"
1357 png_encoder_select="zlib"
1358 qcelp_decoder_select="lsp"
1359 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1360 ra_144_encoder_select="lpc"
1361 rv10_decoder_select="h263_decoder"
1362 rv10_encoder_select="h263_encoder"
1363 rv20_decoder_select="h263_decoder"
1364 rv20_encoder_select="h263_encoder"
1365 rv30_decoder_select="golomb h264chroma h264pred"
1366 rv40_decoder_select="golomb h264chroma h264pred"
1367 shorten_decoder_select="golomb"
1368 sipr_decoder_select="lsp"
1369 snow_decoder_select="dwt"
1370 snow_encoder_select="aandct dwt"
1371 svq1_encoder_select="aandct"
1372 svq3_decoder_select="golomb h264chroma h264dsp h264pred"
1373 svq3_decoder_suggest="zlib"
1374 theora_decoder_select="vp3_decoder"
1375 tiff_decoder_suggest="zlib"
1376 tiff_encoder_suggest="zlib"
1377 truehd_decoder_select="mlp_decoder"
1378 tscc_decoder_select="zlib"
1379 twinvq_decoder_select="mdct lsp sinewin"
1380 vc1_decoder_select="h263_decoder h264chroma"
1381 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1382 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1383 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1384 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1385 vc1image_decoder_select="vc1_decoder"
1386 vorbis_decoder_select="mdct"
1387 vorbis_encoder_select="mdct"
1388 vp6_decoder_select="huffman"
1389 vp6a_decoder_select="vp6_decoder"
1390 vp6f_decoder_select="vp6_decoder"
1391 vp8_decoder_select="h264pred"
1392 wmapro_decoder_select="mdct sinewin"
1393 wmav1_decoder_select="mdct sinewin"
1394 wmav1_encoder_select="mdct sinewin"
1395 wmav2_decoder_select="mdct sinewin"
1396 wmav2_encoder_select="mdct sinewin"
1397 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1398 wmv1_decoder_select="h263_decoder"
1399 wmv1_encoder_select="h263_encoder"
1400 wmv2_decoder_select="h263_decoder"
1401 wmv2_encoder_select="h263_encoder"
1402 wmv3_decoder_select="vc1_decoder"
1403 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1404 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1405 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1406 wmv3image_decoder_select="wmv3_decoder"
1407 zlib_decoder_select="zlib"
1408 zlib_encoder_select="zlib"
1409 zmbv_decoder_select="zlib"
1410 zmbv_encoder_select="zlib"
1411
1412 vaapi_deps="va_va_h"
1413 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1414 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1415
1416 # parsers
1417 h264_parser_select="golomb h264chroma h264dsp h264pred"
1418
1419 # external libraries
1420 libdirac_decoder_deps="libdirac !libschroedinger"
1421 libdirac_encoder_deps="libdirac"
1422 libfaac_encoder_deps="libfaac"
1423 libgsm_decoder_deps="libgsm"
1424 libgsm_encoder_deps="libgsm"
1425 libgsm_ms_decoder_deps="libgsm"
1426 libgsm_ms_encoder_deps="libgsm"
1427 libmp3lame_encoder_deps="libmp3lame"
1428 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1429 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1430 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1431 libopenjpeg_decoder_deps="libopenjpeg"
1432 libschroedinger_decoder_deps="libschroedinger"
1433 libschroedinger_encoder_deps="libschroedinger"
1434 libspeex_decoder_deps="libspeex"
1435 libspeex_encoder_deps="libspeex"
1436 libtheora_encoder_deps="libtheora"
1437 libvo_aacenc_encoder_deps="libvo_aacenc"
1438 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1439 libvorbis_encoder_deps="libvorbis"
1440 libvpx_decoder_deps="libvpx"
1441 libvpx_encoder_deps="libvpx"
1442 libx264_encoder_deps="libx264"
1443 libxavs_encoder_deps="libxavs"
1444 libxvid_encoder_deps="libxvid"
1445
1446 # demuxers / muxers
1447 ac3_demuxer_select="ac3_parser"
1448 asf_stream_muxer_select="asf_muxer"
1449 avisynth_demuxer_deps="avisynth"
1450 dirac_demuxer_select="dirac_parser"
1451 eac3_demuxer_select="ac3_parser"
1452 flac_demuxer_select="flac_parser"
1453 ipod_muxer_select="mov_muxer"
1454 libnut_demuxer_deps="libnut"
1455 libnut_muxer_deps="libnut"
1456 matroska_audio_muxer_select="matroska_muxer"
1457 matroska_demuxer_suggest="zlib bzlib"
1458 mov_demuxer_suggest="zlib"
1459 mp3_demuxer_select="mpegaudio_parser"
1460 mp4_muxer_select="mov_muxer"
1461 mpegtsraw_demuxer_select="mpegts_demuxer"
1462 mxf_d10_muxer_select="mxf_muxer"
1463 ogg_demuxer_select="golomb"
1464 psp_muxer_select="mov_muxer"
1465 rtp_demuxer_select="sdp_demuxer"
1466 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1467 rtsp_demuxer_select="http_protocol rtpdec"
1468 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1469 sap_demuxer_select="sdp_demuxer"
1470 sap_muxer_select="rtp_muxer rtp_protocol"
1471 sdp_demuxer_select="rtpdec"
1472 spdif_muxer_select="aac_parser"
1473 tg2_muxer_select="mov_muxer"
1474 tgp_muxer_select="mov_muxer"
1475 w64_demuxer_deps="wav_demuxer"
1476
1477 # indevs / outdevs
1478 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1479 alsa_outdev_deps="alsa_asoundlib_h"
1480 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1481 dv1394_indev_deps="dv1394 dv_demuxer"
1482 fbdev_indev_deps="linux_fb_h"
1483 jack_indev_deps="jack_jack_h"
1484 libcdio_indev_deps="libcdio"
1485 libdc1394_indev_deps="libdc1394"
1486 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1487 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1488 pulse_indev_deps="libpulse"
1489 sndio_indev_deps="sndio_h"
1490 sndio_outdev_deps="sndio_h"
1491 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1492 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1493 vfwcap_indev_extralibs="-lavicap32"
1494 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1495 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1496
1497 # protocols
1498 gopher_protocol_deps="network"
1499 httpproxy_protocol_deps="network"
1500 httpproxy_protocol_select="tcp_protocol"
1501 http_protocol_deps="network"
1502 http_protocol_select="tcp_protocol"
1503 https_protocol_select="tls_protocol"
1504 mmsh_protocol_select="http_protocol"
1505 mmst_protocol_deps="network"
1506 rtmp_protocol_select="tcp_protocol"
1507 rtmpe_protocol_deps="librtmp"
1508 rtmps_protocol_deps="librtmp"
1509 rtmpt_protocol_deps="librtmp"
1510 rtmpte_protocol_deps="librtmp"
1511 rtp_protocol_select="udp_protocol"
1512 tcp_protocol_deps="network"
1513 tls_protocol_deps_any="openssl gnutls"
1514 tls_protocol_select="tcp_protocol"
1515 udp_protocol_deps="network"
1516
1517 # filters
1518 blackframe_filter_deps="gpl"
1519 boxblur_filter_deps="gpl"
1520 cropdetect_filter_deps="gpl"
1521 delogo_filter_deps="gpl"
1522 drawtext_filter_deps="libfreetype"
1523 frei0r_filter_deps="frei0r dlopen strtok_r"
1524 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1525 hqdn3d_filter_deps="gpl"
1526 ocv_filter_deps="libopencv"
1527 scale_filter_deps="swscale"
1528 yadif_filter_deps="gpl"
1529
1530 # libraries
1531 avdevice_deps="avcodec avformat"
1532 avformat_deps="avcodec"
1533 postproc_deps="gpl"
1534
1535 # programs
1536 avconv_deps="avcodec avformat swscale"
1537 avplay_deps="avcodec avformat swscale sdl"
1538 avplay_select="rdft"
1539 avprobe_deps="avcodec avformat"
1540 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1541 avserver_extralibs='$ldl'
1542
1543 doc_deps="texi2html"
1544
1545 # tests
1546
1547 test_deps(){
1548     suf1=$1
1549     suf2=$2
1550     shift 2
1551     for v; do
1552         dep=${v%=*}
1553         tests=${v#*=}
1554         for name in ${tests}; do
1555             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1556         done
1557     done
1558 }
1559
1560 mxf_d10_test_deps="avfilter"
1561 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1562
1563 test_deps _encoder _decoder                                             \
1564     adpcm_ima_qt                                                        \
1565     adpcm_ima_wav                                                       \
1566     adpcm_ms                                                            \
1567     adpcm_swf                                                           \
1568     adpcm_yamaha=adpcm_yam                                              \
1569     alac                                                                \
1570     asv1                                                                \
1571     asv2                                                                \
1572     bmp                                                                 \
1573     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1574     dvvideo="dv dv_411 dv50"                                            \
1575     ffv1                                                                \
1576     flac                                                                \
1577     flashsv                                                             \
1578     flv                                                                 \
1579     adpcm_g726=g726                                                     \
1580     gif                                                                 \
1581     h261                                                                \
1582     h263="h263 h263p"                                                   \
1583     huffyuv                                                             \
1584     jpegls                                                              \
1585     mjpeg="jpg mjpeg ljpeg"                                             \
1586     mp2                                                                 \
1587     mpeg1video="mpeg mpeg1b"                                            \
1588     mpeg2video="mpeg2 mpeg2_422 mpeg2_idct_int mpeg2_ilace mpeg2_ivlc_qprd" \
1589     mpeg2video="mpeg2thread mpeg2thread_ilace"                          \
1590     mpeg4="mpeg4 mpeg4_adap mpeg4_qpel mpeg4_qprd mpeg4adv mpeg4nr"     \
1591     mpeg4="mpeg4thread error rc"                                        \
1592     msmpeg4v3=msmpeg4                                                   \
1593     msmpeg4v2                                                           \
1594     pbm=pbmpipe                                                         \
1595     pcx                                                                 \
1596     pgm="pgm pgmpipe"                                                   \
1597     png                                                                 \
1598     ppm="ppm ppmpipe"                                                   \
1599     rawvideo="rgb yuv"                                                  \
1600     roq                                                                 \
1601     rv10                                                                \
1602     rv20                                                                \
1603     sgi                                                                 \
1604     snow="snow snowll"                                                  \
1605     svq1                                                                \
1606     targa=tga                                                           \
1607     tiff                                                                \
1608     wmav1                                                               \
1609     wmav2                                                               \
1610     wmv1                                                                \
1611     wmv2                                                                \
1612
1613 test_deps _muxer _demuxer                                               \
1614     aiff                                                                \
1615     pcm_alaw=alaw                                                       \
1616     asf                                                                 \
1617     au                                                                  \
1618     avi                                                                 \
1619     dv=dv_fmt                                                           \
1620     ffm                                                                 \
1621     flv=flv_fmt                                                         \
1622     gxf                                                                 \
1623     matroska=mkv                                                        \
1624     mmf                                                                 \
1625     mov                                                                 \
1626     pcm_mulaw=mulaw                                                     \
1627     mxf="mxf mxf_d10"                                                   \
1628     nut                                                                 \
1629     ogg                                                                 \
1630     rawvideo=pixfmt                                                     \
1631     rm                                                                  \
1632     swf                                                                 \
1633     mpegts=ts                                                           \
1634     voc                                                                 \
1635     wav                                                                 \
1636     yuv4mpegpipe=yuv4mpeg                                               \
1637
1638 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder"
1639 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1640
1641 # default parameters
1642
1643 logfile="config.log"
1644
1645 # installation paths
1646 prefix_default="/usr/local"
1647 bindir_default='${prefix}/bin'
1648 datadir_default='${prefix}/share/avconv'
1649 incdir_default='${prefix}/include'
1650 libdir_default='${prefix}/lib'
1651 mandir_default='${prefix}/share/man'
1652 shlibdir_default="$libdir_default"
1653
1654 # toolchain
1655 ar_default="ar"
1656 cc_default="gcc"
1657 cc_version=\"unknown\"
1658 host_cc_default="gcc"
1659 ln_s="ln -sf"
1660 nm_default="nm"
1661 objformat="elf"
1662 pkg_config_default=pkg-config
1663 ranlib="ranlib"
1664 yasmexe="yasm"
1665
1666 nm_opts='-g'
1667 nogas=":"
1668
1669 # machine
1670 arch_default=$(uname -m)
1671 cpu="generic"
1672
1673 # OS
1674 target_os_default=$(tolower $(uname -s))
1675 host_os=$target_os_default
1676
1677 # configurable options
1678 enable $PROGRAM_LIST
1679
1680 enable avcodec
1681 enable avdevice
1682 enable avfilter
1683 enable avformat
1684 enable avutil
1685 enable swscale
1686
1687 enable asm
1688 enable debug
1689 enable doc
1690 enable fastdiv
1691 enable network
1692 enable optimizations
1693 enable safe_bitstream_reader
1694 enable static
1695 enable swscale_alpha
1696
1697 # build settings
1698 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1699 AVSERVERLDFLAGS=-Wl,-E
1700 LIBPREF="lib"
1701 LIBSUF=".a"
1702 FULLNAME='$(NAME)$(BUILDSUF)'
1703 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1704 SLIBPREF="lib"
1705 SLIBSUF=".so"
1706 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1707 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1708 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1709 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1710 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1711 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1712
1713 AS_O='-o $@'
1714 CC_O='-o $@'
1715
1716 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1717 host_libs='-lm'
1718
1719 target_path='$(CURDIR)'
1720
1721 # since the object filename is not given with the -MM flag, the compiler
1722 # is only able to print the basename, and we must add the path ourselves
1723 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1724 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1725
1726 # find source path
1727 if test -f configure; then
1728     source_path=.
1729 else
1730     source_path=$(cd $(dirname "$0"); pwd)
1731     echo "$source_path" | grep -q '[[:blank:]]' &&
1732         die "Out of tree builds are impossible with whitespace in source path."
1733     test -e "$source_path/config.h" &&
1734         die "Out of tree builds are impossible with config.h in source dir."
1735 fi
1736
1737 for v in "$@"; do
1738     r=${v#*=}
1739     l=${v%"$r"}
1740     r=$(sh_quote "$r")
1741     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1742 done
1743
1744 find_things(){
1745     thing=$1
1746     pattern=$2
1747     file=$source_path/$3
1748     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1749 }
1750
1751 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1752 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1753 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1754 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1755 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1756 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1757 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1758 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1759 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1760 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1761 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1762
1763 ALL_COMPONENTS="
1764     $BSF_LIST
1765     $DECODER_LIST
1766     $DEMUXER_LIST
1767     $ENCODER_LIST
1768     $FILTER_LIST
1769     $HWACCEL_LIST
1770     $INDEV_LIST
1771     $MUXER_LIST
1772     $OUTDEV_LIST
1773     $PARSER_LIST
1774     $PROTOCOL_LIST
1775 "
1776
1777 find_tests(){
1778     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1779 }
1780
1781 ACODEC_TESTS=$(find_tests acodec)
1782 VCODEC_TESTS=$(find_tests vsynth1)
1783 LAVF_TESTS=$(find_tests lavf)
1784 LAVFI_TESTS=$(find_tests lavfi)
1785 SEEK_TESTS=$(find_tests seek seek_)
1786
1787 ALL_TESTS="$ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
1788
1789 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1790
1791 for n in $COMPONENT_LIST; do
1792     v=$(toupper ${n%s})_LIST
1793     eval enable \$$v
1794     eval ${n}_if_any="\$$v"
1795 done
1796
1797 enable $ARCH_EXT_LIST $ALL_TESTS
1798
1799 die_unknown(){
1800     echo "Unknown option \"$1\"."
1801     echo "See $0 --help for available options."
1802     exit 1
1803 }
1804
1805 show_list() {
1806     suffix=_$1
1807     shift
1808     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1809     exit 0
1810 }
1811
1812 for opt do
1813     optval="${opt#*=}"
1814     case "$opt" in
1815     --extra-ldflags=*) add_ldflags $optval
1816     ;;
1817     --extra-libs=*) add_extralibs $optval
1818     ;;
1819     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1820     ;;
1821     --enable-debug=*) debuglevel="$optval"
1822     ;;
1823     --disable-everything)
1824     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1825     ;;
1826     --enable-*=*|--disable-*=*)
1827     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1828     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1829     eval list=\$$(toupper $thing)_LIST
1830     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1831     $action $(filter "$name" $list)
1832     ;;
1833     --enable-?*|--disable-?*)
1834     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1835     if is_in $option $COMPONENT_LIST; then
1836         test $action = disable && action=unset
1837         eval $action \$$(toupper ${option%s})_LIST
1838     elif is_in $option $CMDLINE_SELECT; then
1839         $action $option
1840     else
1841         die_unknown $opt
1842     fi
1843     ;;
1844     --list-*)
1845         NAME="${opt#--list-}"
1846         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1847         NAME=${NAME%s}
1848         eval show_list $NAME \$$(toupper $NAME)_LIST
1849     ;;
1850     --help|-h) show_help
1851     ;;
1852     *)
1853     optname="${opt%%=*}"
1854     optname="${optname#--}"
1855     optname=$(echo "$optname" | sed 's/-/_/g')
1856     if is_in $optname $CMDLINE_SET; then
1857         eval $optname='$optval'
1858     elif is_in $optname $CMDLINE_APPEND; then
1859         append $optname "$optval"
1860     else
1861          die_unknown $opt
1862     fi
1863     ;;
1864     esac
1865 done
1866
1867 disabled logging && logfile=/dev/null
1868
1869 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1870 set >> $logfile
1871
1872 test -n "$cross_prefix" && enable cross_compile
1873
1874 if enabled cross_compile; then
1875     test -n "$arch" && test -n "$target_os" ||
1876         die "Must specify target arch and OS when cross-compiling"
1877 fi
1878
1879 set_default arch target_os
1880
1881 ar_default="${cross_prefix}${ar_default}"
1882 cc_default="${cross_prefix}${cc_default}"
1883 nm_default="${cross_prefix}${nm_default}"
1884 pkg_config_default="${cross_prefix}${pkg_config_default}"
1885 ranlib="${cross_prefix}${ranlib}"
1886
1887 sysinclude_default="${sysroot}/usr/include"
1888
1889 set_default cc nm pkg_config sysinclude
1890 enabled cross_compile || host_cc_default=$cc
1891 set_default host_cc
1892
1893 if ! $pkg_config --version >/dev/null 2>&1; then
1894     warn "$pkg_config not found, library detection may fail."
1895     pkg_config=false
1896 fi
1897
1898 exesuf() {
1899     case $1 in
1900         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1901     esac
1902 }
1903
1904 EXESUF=$(exesuf $target_os)
1905 HOSTEXESUF=$(exesuf $host_os)
1906
1907 # set temporary file name
1908 : ${TMPDIR:=$TEMPDIR}
1909 : ${TMPDIR:=$TMP}
1910 : ${TMPDIR:=/tmp}
1911
1912 if ! check_cmd mktemp -u XXXXXX; then
1913     # simple replacement for missing mktemp
1914     # NOT SAFE FOR GENERAL USE
1915     mktemp(){
1916         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1917     }
1918 fi
1919
1920 tmpfile(){
1921     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1922         (set -C; exec > $tmp) 2>/dev/null ||
1923         die "Unable to create temporary file in $TMPDIR."
1924     append TMPFILES $tmp
1925     eval $1=$tmp
1926 }
1927
1928 trap 'rm -f -- $TMPFILES' EXIT
1929
1930 tmpfile TMPASM .asm
1931 tmpfile TMPC   .c
1932 tmpfile TMPE   $EXESUF
1933 tmpfile TMPH   .h
1934 tmpfile TMPO   .o
1935 tmpfile TMPS   .S
1936 tmpfile TMPSH  .sh
1937 tmpfile TMPV   .ver
1938
1939 unset -f mktemp
1940
1941 chmod +x $TMPE
1942
1943 # make sure we can execute files in $TMPDIR
1944 cat > $TMPSH 2>> $logfile <<EOF
1945 #! /bin/sh
1946 EOF
1947 chmod +x $TMPSH >> $logfile 2>&1
1948 if ! $TMPSH >> $logfile 2>&1; then
1949     cat <<EOF
1950 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1951 variable to another directory and make sure that it is not mounted noexec.
1952 EOF
1953     die "Sanity test failed."
1954 fi
1955
1956 filter_asflags=echo
1957 filter_cflags=echo
1958 filter_cppflags=echo
1959
1960 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1961     cc_type=llvm_gcc
1962     cc_version=__VERSION__
1963     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1964     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1965     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1966     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1967     speed_cflags='-O3'
1968     size_cflags='-Os'
1969 elif $cc -v 2>&1 | grep -qi ^gcc; then
1970     cc_type=gcc
1971     cc_version=__VERSION__
1972     gcc_version=$($cc --version | head -n1)
1973     gcc_basever=$($cc -dumpversion)
1974     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1975     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1976     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1977     if ! $cc -dumpversion | grep -q '^2\.'; then
1978         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1979         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1980     fi
1981     speed_cflags='-O3'
1982     size_cflags='-Os'
1983 elif $cc --version 2>/dev/null | grep -q Intel; then
1984     cc_type=icc
1985     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1986     cc_ident=$($cc --version | head -n1)
1987     icc_version=$($cc -dumpversion)
1988     CC_DEPFLAGS='-MMD'
1989     AS_DEPFLAGS='-MMD'
1990     speed_cflags='-O3'
1991     size_cflags='-Os'
1992     noopt_cflags='-O1'
1993 elif $cc -v 2>&1 | grep -q xlc; then
1994     cc_type=xlc
1995     cc_version="AV_STRINGIFY(__IBMC__)"
1996     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1997     speed_cflags='-O5'
1998     size_cflags='-O5 -qcompact'
1999 elif $cc -V 2>/dev/null | grep -q Compaq; then
2000     cc_type=ccc
2001     cc_version="AV_STRINGIFY(__DECC_VER)"
2002     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
2003     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
2004     debuglevel=3
2005     add_ldflags -Wl,-z,now # calls to libots crash without this
2006     speed_cflags='-fast'
2007     size_cflags='-O1'
2008 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2009     test -d "$sysroot" || die "No valid sysroot specified."
2010     cc_type=armcc
2011     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
2012     cc_ident=$($cc --vsn | head -n1)
2013     armcc_conf="$PWD/armcc.conf"
2014     $cc --arm_linux_configure                 \
2015         --arm_linux_config_file="$armcc_conf" \
2016         --configure_sysroot="$sysroot"        \
2017         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2018         die "Error creating armcc configuration file."
2019     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2020     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2021     as_default="${cross_prefix}gcc"
2022     CC_DEPFLAGS='-MMD'
2023     AS_DEPFLAGS='-MMD'
2024     speed_cflags='-O3'
2025     size_cflags='-Os'
2026     filter_asflags="filter_out -W${armcc_opt}*"
2027 elif $cc -version 2>/dev/null | grep -q TMS470; then
2028     cc_type=tms470
2029     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2030     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2031     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2032     CC_O='-fr=$(@D)'
2033     as_default="${cross_prefix}gcc"
2034     ld_default="${cross_prefix}gcc"
2035     TMPO=$(basename $TMPC .c).o
2036     append TMPFILES $TMPO
2037     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2038     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2039     AS_DEPFLAGS='-MMD'
2040     speed_cflags='-O3 -mf=5'
2041     size_cflags='-O3 -mf=2'
2042     filter_cflags=tms470_flags
2043     tms470_flags(){
2044         for flag; do
2045             case $flag in
2046                 -march=*|-mcpu=*)
2047                     case "${flag#*=}" in
2048                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2049                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2050                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2051                         armv6*|arm11*)          echo -mv=6   ;;
2052                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2053                                                 echo -mv=5e  ;;
2054                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2055                     esac
2056                     ;;
2057                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2058                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2059                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2060                 -msoft-float)   echo --float_support=vfplib       ;;
2061                 -O[0-3]|-mf=*)  echo $flag                        ;;
2062                 -g)             echo -g -mn                       ;;
2063                 -pds=*)         echo $flag                        ;;
2064             esac
2065         done
2066     }
2067 elif $cc -v 2>&1 | grep -q clang; then
2068     cc_type=clang
2069     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2070         cc_version=__clang_version__ || cc_version=__VERSION__
2071     cc_ident=$($cc --version | head -n1)
2072     CC_DEPFLAGS='-MMD'
2073     AS_DEPFLAGS='-MMD'
2074     speed_cflags='-O3'
2075     size_cflags='-Os'
2076 elif $cc -V 2>&1 | grep -q Sun; then
2077     cc_type=suncc
2078     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2079     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2080     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2081     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2082     add_ldflags -xc99
2083     speed_cflags='-O5'
2084     size_cflags='-O5 -xspace'
2085     filter_cflags=suncc_flags
2086     suncc_flags(){
2087         for flag; do
2088             case $flag in
2089                 -march=*|-mcpu=*)
2090                     case "${flag#*=}" in
2091                         native)                   echo -xtarget=native       ;;
2092                         v9|niagara)               echo -xarch=sparc          ;;
2093                         ultrasparc)               echo -xarch=sparcvis       ;;
2094                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2095                         i586|pentium)             echo -xchip=pentium        ;;
2096                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2097                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2098                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2099                         pentium4*)          echo -xtarget=pentium4           ;;
2100                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2101                         *-sse3)             echo -xarch=sse3                 ;;
2102                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2103                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2104                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2105                         k8|opteron|athlon64|athlon-fx)
2106                                                   echo -xarch=sse2a          ;;
2107                         athlon*)                  echo -xarch=pentium_proa   ;;
2108                     esac
2109                     ;;
2110                 -std=c99)             echo -xc99              ;;
2111                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2112                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2113                 -W*,*)                echo $flag              ;;
2114                 -f*-*|-W*)                                    ;;
2115                 *)                    echo $flag              ;;
2116             esac
2117         done
2118     }
2119 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2120     cc_type=pathscale
2121     cc_version=__PATHSCALE__
2122     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2123     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2124     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2125     speed_cflags='-O2'
2126     size_cflags='-Os'
2127     filter_cflags='filter_out -Wdisabled-optimization'
2128 elif $cc -v 2>&1 | grep -q Open64; then
2129     cc_type=open64
2130     cc_version=__OPEN64__
2131     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2132     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2133     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2134     speed_cflags='-O2'
2135     size_cflags='-Os'
2136     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2137 fi
2138
2139 test -n "$cc_type" && enable $cc_type ||
2140     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2141
2142 : ${as_default:=$cc}
2143 : ${dep_cc_default:=$cc}
2144 : ${ld_default:=$cc}
2145 set_default ar as dep_cc ld
2146
2147 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2148 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2149
2150 add_cflags $extra_cflags
2151 add_asflags $extra_cflags
2152
2153 if test -n "$sysroot"; then
2154     case "$cc_type" in
2155         gcc|llvm_gcc|clang)
2156             add_cppflags --sysroot="$sysroot"
2157             add_ldflags --sysroot="$sysroot"
2158         ;;
2159         tms470)
2160             add_cppflags -I"$sysinclude"
2161             add_ldflags  --sysroot="$sysroot"
2162         ;;
2163     esac
2164 fi
2165
2166 if test "$cpu" = host; then
2167     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2168
2169     case "$cc_type" in
2170         gcc|llvm_gcc)
2171             check_native(){
2172                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2173                 sed -n "/cc1.*$1=/{
2174                             s/.*$1=\\([^ ]*\\).*/\\1/
2175                             p
2176                             q
2177                         }" $TMPE
2178             }
2179             cpu=$(check_native -march || check_native -mcpu)
2180         ;;
2181     esac
2182
2183     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2184 fi
2185
2186 # Deal with common $arch aliases
2187 case "$arch" in
2188     arm*)
2189         arch="arm"
2190     ;;
2191     mips|mipsel|IP*)
2192         arch="mips"
2193     ;;
2194     mips64*)
2195         arch="mips"
2196         subarch="mips64"
2197     ;;
2198     parisc|hppa)
2199         arch="parisc"
2200     ;;
2201     parisc64|hppa64)
2202         arch="parisc"
2203         subarch="parisc64"
2204     ;;
2205     "Power Macintosh"|ppc|powerpc)
2206         arch="ppc"
2207     ;;
2208     ppc64|powerpc64)
2209         arch="ppc"
2210         subarch="ppc64"
2211     ;;
2212     s390|s390x)
2213         arch="s390"
2214     ;;
2215     sh4|sh)
2216         arch="sh4"
2217     ;;
2218     sun4u|sparc64)
2219         arch="sparc"
2220         subarch="sparc64"
2221     ;;
2222     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2223         arch="x86"
2224     ;;
2225 esac
2226
2227 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2228 enable $arch
2229
2230 # Add processor-specific flags
2231 if test "$cpu" = generic; then
2232     : do nothing
2233 elif enabled ppc; then
2234
2235     case $(tolower $cpu) in
2236         601|ppc601|powerpc601)
2237             cpuflags="-mcpu=601"
2238             disable altivec
2239         ;;
2240         603*|ppc603*|powerpc603*)
2241             cpuflags="-mcpu=603"
2242             disable altivec
2243         ;;
2244         604*|ppc604*|powerpc604*)
2245             cpuflags="-mcpu=604"
2246             disable altivec
2247         ;;
2248         g3|75*|ppc75*|powerpc75*)
2249             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2250             disable altivec
2251         ;;
2252         g4|745*|ppc745*|powerpc745*)
2253             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2254         ;;
2255         74*|ppc74*|powerpc74*)
2256             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2257         ;;
2258         g5|970|ppc970|powerpc970|power4*)
2259             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2260         ;;
2261         cell)
2262             cpuflags="-mcpu=cell"
2263             enable ldbrx
2264         ;;
2265         e500v2)
2266             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2267             disable altivec
2268         ;;
2269         e500)
2270             cpuflags="-mcpu=8540 -mhard-float"
2271             disable altivec
2272         ;;
2273     esac
2274
2275 elif enabled x86; then
2276
2277     case $cpu in
2278         i[345]86|pentium)
2279             cpuflags="-march=$cpu"
2280             disable mmx
2281         ;;
2282         # targets that do NOT support conditional mov (cmov)
2283         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2284             cpuflags="-march=$cpu"
2285             disable cmov
2286         ;;
2287         # targets that do support conditional mov (cmov)
2288         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2289             cpuflags="-march=$cpu"
2290             enable cmov
2291             enable fast_cmov
2292         ;;
2293         # targets that do support conditional mov but on which it's slow
2294         pentium4|pentium4m|prescott|nocona)
2295             cpuflags="-march=$cpu"
2296             enable cmov
2297             disable fast_cmov
2298         ;;
2299     esac
2300
2301 elif enabled sparc; then
2302
2303     case $cpu in
2304         niagara)
2305             cpuflags="-mcpu=$cpu"
2306             disable vis
2307         ;;
2308         sparc64)
2309             cpuflags="-mcpu=v9"
2310         ;;
2311     esac
2312
2313 elif enabled arm; then
2314
2315     case $cpu in
2316         armv*)
2317             cpuflags="-march=$cpu"
2318             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2319         ;;
2320         *)
2321             cpuflags="-mcpu=$cpu"
2322             case $cpu in
2323                 cortex-a*)                               subarch=armv7a  ;;
2324                 cortex-r*)                               subarch=armv7r  ;;
2325                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2326                 arm11*)                                  subarch=armv6   ;;
2327                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2328                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2329             esac
2330         ;;
2331     esac
2332
2333 elif enabled alpha; then
2334
2335     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2336
2337 elif enabled bfin; then
2338
2339     cpuflags="-mcpu=$cpu"
2340
2341 elif enabled mips; then
2342
2343     cpuflags="-march=$cpu"
2344
2345 elif enabled avr32; then
2346
2347     case $cpu in
2348         ap7[02]0[0-2])
2349             subarch="avr32_ap"
2350             cpuflags="-mpart=$cpu"
2351         ;;
2352         ap)
2353             subarch="avr32_ap"
2354             cpuflags="-march=$cpu"
2355         ;;
2356         uc3[ab]*)
2357             subarch="avr32_uc"
2358             cpuflags="-mcpu=$cpu"
2359         ;;
2360         uc)
2361             subarch="avr32_uc"
2362             cpuflags="-march=$cpu"
2363         ;;
2364     esac
2365
2366 fi
2367
2368 add_cflags $cpuflags
2369 add_asflags $cpuflags
2370
2371 # compiler sanity check
2372 check_exec <<EOF
2373 int main(void){ return 0; }
2374 EOF
2375 if test "$?" != 0; then
2376     echo "$cc is unable to create an executable file."
2377     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2378         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2379         echo "Only do this if you know what cross compiling means."
2380     fi
2381     die "C compiler test failed."
2382 fi
2383
2384 add_cppflags -D_ISOC99_SOURCE
2385 check_cflags -std=c99
2386 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2387 #include <stdlib.h>
2388 EOF
2389 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2390 #include <stdlib.h>
2391 EOF
2392
2393 check_host_cflags -std=c99
2394 check_host_cflags -Wall
2395
2396 case "$arch" in
2397     alpha|ia64|mips|parisc|sparc)
2398         spic=$shared
2399     ;;
2400     x86)
2401         subarch="x86_32"
2402         check_cc <<EOF && subarch="x86_64"
2403         int test[(int)sizeof(char*) - 7];
2404 EOF
2405         if test "$subarch" = "x86_64"; then
2406             spic=$shared
2407         fi
2408     ;;
2409 esac
2410
2411 enable $subarch
2412 enabled spic && enable pic
2413
2414 # OS specific
2415 case $target_os in
2416     haiku)
2417         prefix_default="/boot/common"
2418         network_extralibs="-lnetwork"
2419         host_libs=
2420         ;;
2421     sunos)
2422         AVSERVERLDFLAGS=""
2423         SHFLAGS='-shared -Wl,-h,$$(@F)'
2424         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2425         network_extralibs="-lsocket -lnsl"
2426         add_cppflags -D__EXTENSIONS__
2427         # When using suncc to build, the Solaris linker will mark
2428         # an executable with each instruction set encountered by
2429         # the Solaris assembler.  As our libraries contain their own
2430         # guards for processor-specific code, instead suppress
2431         # generation of the HWCAPS ELF section on Solaris x86 only.
2432         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2433         nm_opts='-P -g'
2434         ;;
2435     netbsd)
2436         disable symver
2437         oss_indev_extralibs="-lossaudio"
2438         oss_outdev_extralibs="-lossaudio"
2439         ;;
2440     openbsd)
2441         enable malloc_aligned
2442         # On OpenBSD 4.5. the compiler does not use PIC unless
2443         # explicitly using -fPIC. Libav builds fine without PIC,
2444         # however the generated executable will not do anything
2445         # (simply quits with exit-code 1, no crash, no output).
2446         # Thus explicitly enable PIC here.
2447         enable pic
2448         disable symver
2449         SHFLAGS='-shared'
2450         oss_indev_extralibs="-lossaudio"
2451         oss_outdev_extralibs="-lossaudio"
2452         ;;
2453     dragonfly)
2454         enable malloc_aligned
2455         disable symver
2456         ;;
2457     freebsd)
2458         enable malloc_aligned
2459         ;;
2460     bsd/os)
2461         add_extralibs -lpoll -lgnugetopt
2462         ;;
2463     darwin)
2464         enable malloc_aligned
2465         gas="gas-preprocessor.pl $cc"
2466         enabled ppc && add_asflags -force_cpusubtype_ALL
2467         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2468         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2469         add_ldflags -Wl,-dynamic,-search_paths_first
2470         SLIBSUF=".dylib"
2471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2473         AVSERVERLDFLAGS=-Wl,-bind_at_load
2474         objformat="macho"
2475         enabled x86_64 && objformat="macho64"
2476         enabled_any pic shared ||
2477             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2478         ;;
2479     mingw32*)
2480         if test $target_os = "mingw32ce"; then
2481             disable network
2482         else
2483             target_os=mingw32
2484         fi
2485         LIBTARGET=i386
2486         if enabled x86_64; then
2487             enable malloc_aligned
2488             LIBTARGET="i386:x86-64"
2489         elif enabled arm; then
2490             LIBTARGET=arm-wince
2491         fi
2492         shlibdir_default="$bindir_default"
2493         SLIBPREF=""
2494         SLIBSUF=".dll"
2495         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2496         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2497         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2498         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2499         SLIB_INSTALL_LINKS=
2500         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2501         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2502         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'
2503         objformat="win32"
2504         dlltool="${cross_prefix}dlltool"
2505         enable dos_paths
2506         check_cflags -fno-common
2507         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2508                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2509                 die "ERROR: MinGW runtime version must be >= 3.15."
2510         add_cppflags -U__STRICT_ANSI__
2511         ;;
2512     cygwin*)
2513         target_os=cygwin
2514         shlibdir_default="$bindir_default"
2515         SLIBPREF="cyg"
2516         SLIBSUF=".dll"
2517         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2518         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2519         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2520         objformat="win32"
2521         enable dos_paths
2522         check_cflags -fno-common
2523         add_cppflags -U__STRICT_ANSI__
2524         ;;
2525     *-dos|freedos|opendos)
2526         network_extralibs="-lsocket"
2527         objformat="coff"
2528         enable dos_paths
2529         add_cppflags -U__STRICT_ANSI__
2530         ;;
2531     linux)
2532         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2533         enable dv1394
2534         ;;
2535     irix*)
2536         target_os=irix
2537         ranlib="echo ignoring ranlib"
2538         ;;
2539     os/2*)
2540         ln_s="cp -f"
2541         objformat="aout"
2542         add_cppflags -D_GNU_SOURCE
2543         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2544         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2545         AVSERVERLDFLAGS=""
2546         LIBSUF="_s.a"
2547         SLIBPREF=""
2548         SLIBSUF=".dll"
2549         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2550         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2551         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2552           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2553           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2554           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2555           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2556           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2557         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2558           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2559         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2560         enable dos_paths
2561         ;;
2562     gnu/kfreebsd)
2563         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2564         ;;
2565     gnu)
2566         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2567         ;;
2568     qnx)
2569         add_cppflags -D_QNX_SOURCE
2570         network_extralibs="-lsocket"
2571         ;;
2572     symbian)
2573         SLIBSUF=".dll"
2574         enable dos_paths
2575         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2576         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2577         add_ldflags -Wl,--target1-abs,--no-undefined \
2578                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2579                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2580         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2581                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2582                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2583         ;;
2584     none)
2585         ;;
2586     *)
2587         die "Unknown OS '$target_os'."
2588         ;;
2589 esac
2590
2591 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2592
2593 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2594
2595 set_default $PATHS_LIST
2596
2597 # we need to build at least one lib type
2598 if ! enabled_any static shared; then
2599     cat <<EOF
2600 At least one library type must be built.
2601 Specify --enable-static to build the static libraries or --enable-shared to
2602 build the shared libraries as well. To only build the shared libraries specify
2603 --disable-static in addition to --enable-shared.
2604 EOF
2605     exit 1;
2606 fi
2607
2608 die_license_disabled() {
2609     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2610 }
2611
2612 die_license_disabled gpl libcdio
2613 die_license_disabled gpl libx264
2614 die_license_disabled gpl libxavs
2615 die_license_disabled gpl libxvid
2616 die_license_disabled gpl x11grab
2617
2618 die_license_disabled nonfree libfaac
2619 die_license_disabled nonfree openssl
2620
2621 die_license_disabled version3 libopencore_amrnb
2622 die_license_disabled version3 libopencore_amrwb
2623 die_license_disabled version3 libvo_aacenc
2624 die_license_disabled version3 libvo_amrwbenc
2625
2626 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2627
2628 disabled optimizations || check_cflags -fomit-frame-pointer
2629
2630 enable_pic() {
2631     enable pic
2632     add_cppflags -DPIC
2633     add_cflags   -fPIC
2634     add_asflags  -fPIC
2635 }
2636
2637 enabled pic && enable_pic
2638
2639 check_cc <<EOF || die "Symbol mangling check failed."
2640 int ff_extern;
2641 EOF
2642 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2643 extern_prefix=${sym%%ff_extern*}
2644
2645 check_cc <<EOF && enable inline_asm
2646 void foo(void) { __asm__ volatile ("" ::); }
2647 EOF
2648
2649 _restrict=
2650 for restrict_keyword in restrict __restrict__ __restrict; do
2651     check_cc <<EOF && _restrict=$restrict_keyword && break
2652 void foo(char * $restrict_keyword p);
2653 EOF
2654 done
2655
2656 check_cc <<EOF && enable attribute_packed
2657 struct { int x; } __attribute__((packed)) x;
2658 EOF
2659
2660 check_cc <<EOF && enable attribute_may_alias
2661 union { int x; } __attribute__((may_alias)) x;
2662 EOF
2663
2664 check_cc <<EOF || die "endian test failed"
2665 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2666 EOF
2667 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2668
2669 if enabled alpha; then
2670
2671     check_cflags -mieee
2672
2673 elif enabled arm; then
2674
2675     enabled thumb && check_cflags -mthumb || check_cflags -marm
2676     nogas=die
2677
2678     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2679         enable vfp_args
2680     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2681         case "${cross_prefix:-$cc}" in
2682             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2683             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2684 __asm__ (".eabi_attribute 28, 1");
2685 int main(void) { return 0; }
2686 EOF
2687         esac
2688         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2689     fi
2690
2691     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2692     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2693     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2694     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2695     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2696     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2697     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2698
2699     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2700
2701     enabled_all armv6t2 shared !pic && enable_pic
2702
2703 elif enabled mips; then
2704
2705     check_asm loongson '"dmult.g $1, $2, $3"'
2706     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2707
2708 elif enabled ppc; then
2709
2710     enable local_aligned_8 local_aligned_16
2711
2712     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2713     check_asm ibm_asm   '"add 0, 0, 0"'
2714     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2715     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2716
2717     # AltiVec flags: The FSF version of GCC differs from the Apple version
2718     if enabled altivec; then
2719         nogas=warn
2720         check_cflags -maltivec -mabi=altivec &&
2721         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2722         check_cflags -faltivec
2723
2724         # check if our compiler supports Motorola AltiVec C API
2725         check_cc <<EOF || disable altivec
2726 $inc_altivec_h
2727 int main(void) {
2728     vector signed int v1, v2, v3;
2729     v1 = vec_add(v2,v3);
2730     return 0;
2731 }
2732 EOF
2733
2734         # check if our compiler supports braces for vector declarations
2735         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2736 $inc_altivec_h
2737 int main (void) { (vector int) {1}; return 0; }
2738 EOF
2739     fi
2740
2741 elif enabled sparc; then
2742
2743     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2744         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2745
2746 elif enabled x86; then
2747
2748     enable local_aligned_8 local_aligned_16
2749
2750     # check whether EBP is available on x86
2751     # As 'i' is stored on the stack, this program will crash
2752     # if the base pointer is used to access it because the
2753     # base pointer is cleared in the inline assembly code.
2754     check_exec_crash <<EOF && enable ebp_available
2755     volatile int i=0;
2756     __asm__ volatile (
2757         "xorl %%ebp, %%ebp"
2758     ::: "%ebp");
2759     return i;
2760 EOF
2761
2762     # check whether EBX is available on x86
2763     check_asm ebx_available '""::"b"(0)' &&
2764         check_asm ebx_available '"":::"%ebx"'
2765
2766     # check whether xmm clobbers are supported
2767     check_asm xmm_clobbers '"":::"%xmm0"'
2768
2769     # check whether binutils is new enough to compile SSSE3/MMX2
2770     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2771     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2772
2773     if ! disabled_any asm mmx yasm; then
2774         if check_cmd $yasmexe --version; then
2775             enabled x86_64 && yasm_extra="-m amd64"
2776             yasm_debug="-g dwarf2"
2777         elif check_cmd nasm -v; then
2778             yasmexe=nasm
2779             yasm_debug="-g -F dwarf"
2780             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2781         fi
2782
2783         YASMFLAGS="-f $objformat $yasm_extra"
2784         enabled pic               && append YASMFLAGS "-DPIC"
2785         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2786         case "$objformat" in
2787             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2788         esac
2789
2790         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2791             die "yasm not found, use --disable-yasm for a crippled build"
2792         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2793     fi
2794
2795     case "$cpu" in
2796         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2797             disable fast_clz
2798         ;;
2799     esac
2800
2801 fi
2802
2803 if enabled asm; then
2804     as=${gas:=$as}
2805     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2806         $nogas "GNU assembler not found, install gas-preprocessor"
2807 fi
2808
2809 check_ldflags -Wl,--as-needed
2810
2811 if check_func dlopen; then
2812     ldl=
2813 elif check_func dlopen -ldl; then
2814     ldl=-ldl
2815 fi
2816
2817 if enabled network; then
2818     check_type "sys/types.h sys/socket.h" socklen_t
2819     check_type netdb.h "struct addrinfo"
2820     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2821     check_type netinet/in.h "struct sockaddr_in6"
2822     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2823     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2824     # Prefer arpa/inet.h over winsock2
2825     if check_header arpa/inet.h ; then
2826         check_func closesocket
2827     elif check_header winsock2.h ; then
2828         check_func_headers winsock2.h closesocket -lws2 && \
2829             network_extralibs="-lws2" || \
2830         { check_func_headers winsock2.h closesocket -lws2_32 && \
2831             network_extralibs="-lws2_32"; }
2832         check_type ws2tcpip.h socklen_t
2833         check_type ws2tcpip.h "struct addrinfo"
2834         check_type ws2tcpip.h "struct ipv6_mreq"
2835         check_type ws2tcpip.h "struct sockaddr_in6"
2836         check_type ws2tcpip.h "struct sockaddr_storage"
2837         check_struct winsock2.h "struct sockaddr" sa_len
2838     else
2839         disable network
2840     fi
2841 fi
2842
2843 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2844 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2845
2846 check_func  fcntl
2847 check_func  fork
2848 check_func  getaddrinfo $network_extralibs
2849 check_func  gethrtime
2850 check_func  getrusage
2851 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2852 check_func  inet_aton $network_extralibs
2853 check_func  isatty
2854 check_func  localtime_r
2855 check_func  ${malloc_prefix}memalign            && enable memalign
2856 check_func  mkstemp
2857 check_func  mmap
2858 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2859 check_func  setrlimit
2860 check_func  strerror_r
2861 check_func  strptime
2862 check_func  strtok_r
2863 check_func  sched_getaffinity
2864 check_func  sysconf
2865 check_func  sysctl
2866 check_func_headers io.h setmode
2867 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2868 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2869 check_func_headers windows.h GetProcessAffinityMask
2870 check_func_headers windows.h GetProcessTimes
2871 check_func_headers windows.h MapViewOfFile
2872 check_func_headers windows.h VirtualAlloc
2873
2874 check_header dlfcn.h
2875 check_header dxva2api.h
2876 check_header malloc.h
2877 check_header poll.h
2878 check_header sys/mman.h
2879 check_header sys/param.h
2880 check_header sys/resource.h
2881 check_header sys/select.h
2882 check_header vdpau/vdpau.h
2883 check_header vdpau/vdpau_x11.h
2884 check_header X11/extensions/XvMClib.h
2885
2886 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2887
2888 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2889 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2890
2891 if ! disabled w32threads && ! enabled pthreads; then
2892     check_func _beginthreadex && enable w32threads
2893 fi
2894
2895 # check for some common methods of building with pthread support
2896 # do this before the optional library checks as some of them require pthreads
2897 if ! disabled pthreads && ! enabled w32threads; then
2898     enable pthreads
2899     if check_func pthread_create; then
2900         :
2901     elif check_func pthread_create -pthread; then
2902         add_cflags -pthread
2903         add_extralibs -pthread
2904     elif check_func pthread_create -pthreads; then
2905         add_cflags -pthreads
2906         add_extralibs -pthreads
2907     elif check_func pthread_create -lpthreadGC2; then
2908         add_extralibs -lpthreadGC2
2909     elif ! check_lib pthread.h pthread_create -lpthread; then
2910         disable pthreads
2911     fi
2912 fi
2913
2914 for thread in $THREADS_LIST; do
2915     if enabled $thread; then
2916         test -n "$thread_type" &&
2917             die "ERROR: Only one thread type must be selected." ||
2918             thread_type="$thread"
2919     fi
2920 done
2921
2922 check_lib math.h sin -lm && LIBM="-lm"
2923 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2924
2925 check_mathfunc exp2
2926 check_mathfunc exp2f
2927 check_mathfunc llrint
2928 check_mathfunc llrintf
2929 check_mathfunc log2
2930 check_mathfunc log2f
2931 check_mathfunc lrint
2932 check_mathfunc lrintf
2933 check_mathfunc round
2934 check_mathfunc roundf
2935 check_mathfunc trunc
2936 check_mathfunc truncf
2937
2938 # these are off by default, so fail if requested and not available
2939 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2940 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2941 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
2942 enabled libdirac   && require_pkg_config dirac                          \
2943     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2944     "dirac_decoder_init dirac_encoder_init"
2945 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2946 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2947 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2948 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2949 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2950 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2951 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2952 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2953 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2954 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
2955 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2956 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2957 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2958 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2959 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2960 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2961 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2962 enabled libvpx     && {
2963     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2964                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2965     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2966                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2967 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2968                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2969                         die "ERROR: libx264 version must be >= 0.118."; }
2970 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2971 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2972 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
2973                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
2974                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
2975                         die "ERROR: openssl not found"; }
2976
2977 # libdc1394 check
2978 if enabled libdc1394; then
2979     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2980         enable libdc1394_2; } ||
2981     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2982         enable libdc1394_1; } ||
2983     die "ERROR: No version of libdc1394 found "
2984 fi
2985
2986 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2987     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2988     enable sdl &&
2989     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2990 fi
2991
2992 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2993
2994 check_header linux/fb.h
2995 check_header linux/videodev2.h
2996 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
2997
2998 check_header sys/videoio.h
2999
3000 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3001 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3002 # w32api 3.12 had it defined wrong
3003 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3004
3005 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3006 { check_header dev/bktr/ioctl_meteor.h &&
3007   check_header dev/bktr/ioctl_bt848.h; } ||
3008 { check_header machine/ioctl_meteor.h &&
3009   check_header machine/ioctl_bt848.h; } ||
3010 { check_header dev/video/meteor/ioctl_meteor.h &&
3011   check_header dev/video/bktr/ioctl_bt848.h; } ||
3012 check_header dev/ic/bt8xx.h
3013
3014 check_header sndio.h
3015 check_header sys/soundcard.h
3016 check_header soundcard.h
3017
3018 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3019
3020 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
3021
3022 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3023
3024 enabled libcdio &&
3025     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3026
3027 enabled x11grab                         &&
3028 check_header X11/Xlib.h                 &&
3029 check_header X11/extensions/XShm.h      &&
3030 check_header X11/extensions/Xfixes.h    &&
3031 check_func XOpenDisplay -lX11           &&
3032 check_func XShmCreateImage -lX11 -lXext &&
3033 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3034
3035 # check for VDA header
3036 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3037     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3038 fi
3039
3040 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3041 check_cpp_condition \
3042     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3043     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3044       disable vdpau; }
3045 fi
3046
3047 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3048
3049 # add some useful compiler flags if supported
3050 check_cflags -Wdeclaration-after-statement
3051 check_cflags -Wall
3052 check_cflags -Wno-parentheses
3053 check_cflags -Wno-switch
3054 check_cflags -Wno-format-zero-length
3055 check_cflags -Wdisabled-optimization
3056 check_cflags -Wpointer-arith
3057 check_cflags -Wredundant-decls
3058 check_cflags -Wno-pointer-sign
3059 check_cflags -Wcast-qual
3060 check_cflags -Wwrite-strings
3061 check_cflags -Wtype-limits
3062 check_cflags -Wundef
3063 check_cflags -Wmissing-prototypes
3064 check_cflags -Wstrict-prototypes
3065 enabled extra_warnings && check_cflags -Winline
3066
3067 # add some linker flags
3068 check_ldflags -Wl,--warn-common
3069 check_ldflags -Wl,-rpath-link=libpostproc:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3070 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3071
3072 enabled xmm_clobber_test &&                             \
3073     check_ldflags -Wl,--wrap,avcodec_open2              \
3074                   -Wl,--wrap,avcodec_decode_audio4      \
3075                   -Wl,--wrap,avcodec_decode_video2      \
3076                   -Wl,--wrap,avcodec_decode_subtitle2   \
3077                   -Wl,--wrap,avcodec_encode_audio2      \
3078                   -Wl,--wrap,avcodec_encode_video       \
3079                   -Wl,--wrap,avcodec_encode_subtitle    \
3080                   -Wl,--wrap,sws_scale ||               \
3081     disable xmm_clobber_test
3082
3083 echo "X{};" > $TMPV
3084 if test_ldflags -Wl,--version-script,$TMPV; then
3085     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3086     check_cc <<EOF && enable symver_asm_label
3087 void ff_foo(void) __asm__ ("av_foo@VERSION");
3088 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3089 EOF
3090     check_cc <<EOF && enable symver_gnu_asm
3091 __asm__(".symver ff_foo,av_foo@VERSION");
3092 void ff_foo(void) {}
3093 EOF
3094 fi
3095
3096 if [ -n "$optflags" ]; then
3097     add_cflags $optflags
3098 elif enabled small; then
3099     add_cflags $size_cflags
3100 elif enabled optimizations; then
3101     add_cflags $speed_cflags
3102 else
3103     add_cflags $noopt_cflags
3104 fi
3105 check_cflags -fno-math-errno
3106 check_cflags -fno-signed-zeros
3107
3108 if enabled icc; then
3109     # Just warnings, no remarks
3110     check_cflags -w1
3111     # -wd: Disable following warnings
3112     # 144, 167, 556: -Wno-pointer-sign
3113     # 1292: attribute "foo" ignored
3114     # 10006: ignoring unknown option -fno-signed-zeros
3115     # 10148: ignoring unknown option -Wno-parentheses
3116     # 10156: ignoring option '-W'; no argument required
3117     check_cflags -wd144,167,556,1292,10006,10148,10156
3118     # 11030: Warning unknown option --as-needed
3119     # 10156: ignoring option '-export'; no argument required
3120     check_ldflags -wd10156,11030
3121     # Allow to compile with optimizations
3122     check_ldflags -march=$cpu
3123     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3124     enable ebp_available
3125     if enabled x86_32; then
3126         test ${icc_version%%.*} -ge 11 && \
3127             check_cflags -falign-stack=maintain-16-byte || \
3128             disable aligned_stack
3129     fi
3130 elif enabled ccc; then
3131     # disable some annoying warnings
3132     add_cflags -msg_disable cvtu32to64
3133     add_cflags -msg_disable embedcomment
3134     add_cflags -msg_disable needconstext
3135     add_cflags -msg_disable nomainieee
3136     add_cflags -msg_disable ptrmismatch1
3137     add_cflags -msg_disable unreachcode
3138 elif enabled gcc; then
3139     check_cflags -fno-tree-vectorize
3140     check_cflags -Werror=implicit-function-declaration
3141     check_cflags -Werror=missing-prototypes
3142     check_cflags -Werror=declaration-after-statement
3143 elif enabled llvm_gcc; then
3144     check_cflags -mllvm -stack-alignment=16
3145 elif enabled clang; then
3146     check_cflags -mllvm -stack-alignment=16
3147     check_cflags -Qunused-arguments
3148 elif enabled armcc; then
3149     # 2523: use of inline assembler is deprecated
3150     add_cflags -W${armcc_opt},--diag_suppress=2523
3151     add_cflags -W${armcc_opt},--diag_suppress=1207
3152     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3153     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3154     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3155     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3156 elif enabled tms470; then
3157     add_cflags -pds=824 -pds=837
3158 elif enabled pathscale; then
3159     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3160 fi
3161
3162 enabled_any $THREADS_LIST      && enable threads
3163
3164 check_deps $CONFIG_LIST       \
3165            $CONFIG_EXTRA      \
3166            $HAVE_LIST         \
3167            $ALL_COMPONENTS    \
3168            $ALL_TESTS         \
3169
3170 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3171
3172 ! enabled_any memalign posix_memalign malloc_aligned &&
3173     enabled_any $need_memalign && enable memalign_hack
3174
3175 echo "install prefix            $prefix"
3176 echo "source path               $source_path"
3177 echo "C compiler                $cc"
3178 echo "ARCH                      $arch ($cpu)"
3179 if test "$build_suffix" != ""; then
3180     echo "build suffix              $build_suffix"
3181 fi
3182 if test "$extra_version" != ""; then
3183     echo "version string suffix     $extra_version"
3184 fi
3185 echo "big-endian                ${bigendian-no}"
3186 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3187 if enabled x86; then
3188     echo "${yasmexe}                      ${yasm-no}"
3189     echo "MMX enabled               ${mmx-no}"
3190     echo "MMX2 enabled              ${mmx2-no}"
3191     echo "3DNow! enabled            ${amd3dnow-no}"
3192     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3193     echo "SSE enabled               ${sse-no}"
3194     echo "SSSE3 enabled             ${ssse3-no}"
3195     echo "AVX enabled               ${avx-no}"
3196     echo "CMOV enabled              ${cmov-no}"
3197     echo "CMOV is fast              ${fast_cmov-no}"
3198     echo "EBX available             ${ebx_available-no}"
3199     echo "EBP available             ${ebp_available-no}"
3200 fi
3201 if enabled arm; then
3202     echo "ARMv5TE enabled           ${armv5te-no}"
3203     echo "ARMv6 enabled             ${armv6-no}"
3204     echo "ARMv6T2 enabled           ${armv6t2-no}"
3205     echo "ARM VFP enabled           ${armvfp-no}"
3206     echo "IWMMXT enabled            ${iwmmxt-no}"
3207     echo "NEON enabled              ${neon-no}"
3208 fi
3209 if enabled mips; then
3210     echo "MMI enabled               ${mmi-no}"
3211 fi
3212 if enabled ppc; then
3213     echo "AltiVec enabled           ${altivec-no}"
3214     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3215     echo "dcbzl available           ${dcbzl-no}"
3216 fi
3217 if enabled sparc; then
3218     echo "VIS enabled               ${vis-no}"
3219 fi
3220 echo "debug symbols             ${debug-no}"
3221 echo "optimize for size         ${small-no}"
3222 echo "optimizations             ${optimizations-no}"
3223 echo "static                    ${static-no}"
3224 echo "shared                    ${shared-no}"
3225 echo "postprocessing support    ${postproc-no}"
3226 echo "new filter support        ${avfilter-no}"
3227 echo "network support           ${network-no}"
3228 echo "threading support         ${thread_type-no}"
3229 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3230 echo "SDL support               ${sdl-no}"
3231 echo "libdxva2 enabled          ${dxva2-no}"
3232 echo "libva enabled             ${vaapi-no}"
3233 echo "libvdpau enabled          ${vdpau-no}"
3234 echo "AVISynth enabled          ${avisynth-no}"
3235 echo "frei0r enabled            ${frei0r-no}"
3236 echo "gnutls enabled            ${gnutls-no}"
3237 echo "libcdio support           ${libcdio-no}"
3238 echo "libdc1394 support         ${libdc1394-no}"
3239 echo "libdirac enabled          ${libdirac-no}"
3240 echo "libfaac enabled           ${libfaac-no}"
3241 echo "libgsm enabled            ${libgsm-no}"
3242 echo "libmp3lame enabled        ${libmp3lame-no}"
3243 echo "libnut enabled            ${libnut-no}"
3244 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3245 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3246 echo "libopencv support         ${libopencv-no}"
3247 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3248 echo "libpulse enabled          ${libpulse-no}"
3249 echo "librtmp enabled           ${librtmp-no}"
3250 echo "libschroedinger enabled   ${libschroedinger-no}"
3251 echo "libspeex enabled          ${libspeex-no}"
3252 echo "libtheora enabled         ${libtheora-no}"
3253 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3254 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3255 echo "libvorbis enabled         ${libvorbis-no}"
3256 echo "libvpx enabled            ${libvpx-no}"
3257 echo "libx264 enabled           ${libx264-no}"
3258 echo "libxavs enabled           ${libxavs-no}"
3259 echo "libxvid enabled           ${libxvid-no}"
3260 echo "openssl enabled           ${openssl-no}"
3261 echo "zlib enabled              ${zlib-no}"
3262 echo "bzlib enabled             ${bzlib-no}"
3263 echo
3264
3265 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3266     echo "Enabled ${type}s:"
3267     eval list=\$$(toupper $type)_LIST
3268     print_enabled '_*' $list | sort | pr -r -3 -t
3269     echo
3270 done
3271
3272 license="LGPL version 2.1 or later"
3273 if enabled nonfree; then
3274     license="nonfree and unredistributable"
3275 elif enabled gplv3; then
3276     license="GPL version 3 or later"
3277 elif enabled lgplv3; then
3278     license="LGPL version 3 or later"
3279 elif enabled gpl; then
3280     license="GPL version 2 or later"
3281 fi
3282
3283 echo "License: $license"
3284
3285 echo "Creating config.mak and config.h..."
3286
3287 test -e Makefile || $ln_s "$source_path/Makefile" .
3288
3289 config_files="$TMPH config.mak"
3290
3291 cat > config.mak <<EOF
3292 # Automatically generated by configure - do not modify!
3293 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3294 prefix=$prefix
3295 LIBDIR=\$(DESTDIR)$libdir
3296 SHLIBDIR=\$(DESTDIR)$shlibdir
3297 INCDIR=\$(DESTDIR)$incdir
3298 BINDIR=\$(DESTDIR)$bindir
3299 DATADIR=\$(DESTDIR)$datadir
3300 MANDIR=\$(DESTDIR)$mandir
3301 SRC_PATH=$source_path
3302 CC_IDENT=$cc_ident
3303 ARCH=$arch
3304 CC=$cc
3305 AS=$as
3306 LD=$ld
3307 DEPCC=$dep_cc
3308 YASM=$yasmexe
3309 YASMDEP=$yasmexe
3310 AR=$ar
3311 RANLIB=$ranlib
3312 LN_S=$ln_s
3313 CPPFLAGS=$CPPFLAGS
3314 CFLAGS=$CFLAGS
3315 ASFLAGS=$ASFLAGS
3316 AS_O=$CC_O
3317 CC_O=$CC_O
3318 DLLTOOL=$dlltool
3319 LDFLAGS=$LDFLAGS
3320 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3321 SHFLAGS=$SHFLAGS
3322 YASMFLAGS=$YASMFLAGS
3323 BUILDSUF=$build_suffix
3324 FULLNAME=$FULLNAME
3325 LIBPREF=$LIBPREF
3326 LIBSUF=$LIBSUF
3327 LIBNAME=$LIBNAME
3328 SLIBPREF=$SLIBPREF
3329 SLIBSUF=$SLIBSUF
3330 EXESUF=$EXESUF
3331 EXTRA_VERSION=$extra_version
3332 DEPFLAGS=$DEPFLAGS
3333 CCDEP=$CCDEP
3334 ASDEP=$ASDEP
3335 CC_DEPFLAGS=$CC_DEPFLAGS
3336 AS_DEPFLAGS=$AS_DEPFLAGS
3337 HOSTCC=$host_cc
3338 HOSTCFLAGS=$host_cflags
3339 HOSTEXESUF=$HOSTEXESUF
3340 HOSTLDFLAGS=$host_ldflags
3341 HOSTLIBS=$host_libs
3342 TARGET_EXEC=$target_exec
3343 TARGET_PATH=$target_path
3344 SDL_LIBS=$sdl_libs
3345 SDL_CFLAGS=$sdl_cflags
3346 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3347 EXTRALIBS=$extralibs
3348 INSTALL=install
3349 LIBTARGET=${LIBTARGET}
3350 SLIBNAME=${SLIBNAME}
3351 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3352 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3353 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3354 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3355 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3356 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3357 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3358 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3359 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3360 EOF
3361
3362 get_version(){
3363     name=$1
3364     file=$source_path/$2
3365     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3366     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3367     lcname=$(tolower $name)
3368     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3369     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3370 }
3371
3372 get_version LIBAVCODEC  libavcodec/version.h
3373 get_version LIBAVDEVICE libavdevice/avdevice.h
3374 get_version LIBAVFILTER libavfilter/version.h
3375 get_version LIBAVFORMAT libavformat/version.h
3376 get_version LIBAVUTIL   libavutil/avutil.h
3377 get_version LIBPOSTPROC libpostproc/postprocess.h
3378 get_version LIBSWSCALE  libswscale/swscale.h
3379
3380 cat > $TMPH <<EOF
3381 /* Automatically generated by configure - do not modify! */
3382 #ifndef LIBAV_CONFIG_H
3383 #define LIBAV_CONFIG_H
3384 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3385 #define LIBAV_LICENSE "$(c_escape $license)"
3386 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3387 #define CC_TYPE "$cc_type"
3388 #define CC_VERSION $cc_version
3389 #define restrict $_restrict
3390 #define EXTERN_PREFIX "${extern_prefix}"
3391 #define EXTERN_ASM ${extern_prefix}
3392 #define SLIBSUF "$SLIBSUF"
3393 EOF
3394
3395 test -n "$malloc_prefix" &&
3396     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3397
3398 if enabled small || disabled optimizations; then
3399     echo "#undef  av_always_inline"  >> $TMPH
3400     if enabled small; then
3401         echo "#define av_always_inline inline"  >> $TMPH
3402     else
3403         echo "#define av_always_inline av_unused"  >> $TMPH
3404     fi
3405 fi
3406
3407 if enabled yasm; then
3408     append config_files $TMPASM
3409     printf '' >$TMPASM
3410 fi
3411
3412 print_config ARCH_   "$config_files" $ARCH_LIST
3413 print_config HAVE_   "$config_files" $HAVE_LIST
3414 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3415                                      $CONFIG_EXTRA      \
3416                                      $ALL_COMPONENTS    \
3417
3418 cat >>config.mak <<EOF
3419 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3420 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3421 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3422 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3423 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3424 EOF
3425
3426 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3427
3428 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3429 cp_if_changed $TMPH config.h
3430 touch .config
3431
3432 enabled yasm && cp_if_changed $TMPASM config.asm
3433
3434 cat > $TMPH <<EOF
3435 /* Generated by ffconf */
3436 #ifndef AVUTIL_AVCONFIG_H
3437 #define AVUTIL_AVCONFIG_H
3438 EOF
3439
3440 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3441
3442 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3443
3444 cp_if_changed $TMPH libavutil/avconfig.h
3445
3446 test -n "$WARNINGS" && printf "\n$WARNINGS"
3447
3448 # build pkg-config files
3449
3450 pkgconfig_generate(){
3451 name=$1
3452 shortname=${name#lib}${build_suffix}
3453 comment=$2
3454 version=$3
3455 libs=$4
3456 requires=$5
3457 enabled ${name#lib} || return 0
3458 mkdir -p $name
3459 cat <<EOF > $name/$name.pc
3460 prefix=$prefix
3461 exec_prefix=\${prefix}
3462 libdir=$libdir
3463 includedir=$incdir
3464
3465 Name: $name
3466 Description: $comment
3467 Version: $version
3468 Requires: $(enabled shared || echo $requires)
3469 Requires.private: $(enabled shared && echo $requires)
3470 Conflicts:
3471 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3472 Libs.private: $(enabled shared && echo $libs)
3473 Cflags: -I\${includedir}
3474 EOF
3475 cat <<EOF > $name/$name-uninstalled.pc
3476 prefix=
3477 exec_prefix=
3478 libdir=\${pcfiledir}
3479 includedir=${source_path}
3480
3481 Name: $name
3482 Description: $comment
3483 Version: $version
3484 Requires: $requires
3485 Conflicts:
3486 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3487 Cflags: -I\${includedir}
3488 EOF
3489 }
3490
3491 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3492 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3493 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3494 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3495 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3496 pkgconfig_generate libpostproc "Libav postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3497 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"