remove iwmmxt optimizations
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-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   --disable-avfilter       disable video filter support [no]
92   --disable-pthreads       disable pthreads [auto]
93   --disable-w32threads     disable Win32 threads [auto]
94   --enable-x11grab         enable X11 grabbing [no]
95   --disable-network        disable network support [no]
96   --enable-gray            enable full grayscale support (slower color)
97   --disable-swscale-alpha  disable alpha channel support in swscale
98   --disable-fastdiv        disable table-based division
99   --enable-small           optimize for size instead of speed
100   --disable-aandct         disable AAN DCT code
101   --disable-dct            disable DCT code
102   --disable-fft            disable FFT code
103   --disable-golomb         disable Golomb code
104   --disable-huffman        disable Huffman code
105   --disable-lpc            disable LPC code
106   --disable-mdct           disable MDCT code
107   --disable-rdft           disable RDFT code
108   --enable-vaapi           enable VAAPI code
109   --enable-vda             enable VDA code
110   --enable-vdpau           enable VDPAU code
111   --disable-dxva2          disable DXVA2 code
112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
114   --disable-safe-bitstream-reader
115                            disable buffer boundary checking in bitreaders
116                            (faster, but may crash)
117   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
118   --disable-everything     disable all components listed below
119   --disable-encoder=NAME   disable encoder NAME
120   --enable-encoder=NAME    enable encoder NAME
121   --disable-encoders       disable all encoders
122   --disable-decoder=NAME   disable decoder NAME
123   --enable-decoder=NAME    enable decoder NAME
124   --disable-decoders       disable all decoders
125   --disable-hwaccel=NAME   disable hwaccel NAME
126   --enable-hwaccel=NAME    enable hwaccel NAME
127   --disable-hwaccels       disable all hwaccels
128   --disable-muxer=NAME     disable muxer NAME
129   --enable-muxer=NAME      enable muxer NAME
130   --disable-muxers         disable all muxers
131   --disable-demuxer=NAME   disable demuxer NAME
132   --enable-demuxer=NAME    enable demuxer NAME
133   --disable-demuxers       disable all demuxers
134   --enable-parser=NAME     enable parser NAME
135   --disable-parser=NAME    disable parser NAME
136   --disable-parsers        disable all parsers
137   --enable-bsf=NAME        enable bitstream filter NAME
138   --disable-bsf=NAME       disable bitstream filter NAME
139   --disable-bsfs           disable all bitstream filters
140   --enable-protocol=NAME   enable protocol NAME
141   --disable-protocol=NAME  disable protocol NAME
142   --disable-protocols      disable all protocols
143   --disable-indev=NAME     disable input device NAME
144   --disable-outdev=NAME    disable output device NAME
145   --disable-indevs         disable input devices
146   --disable-outdevs        disable output devices
147   --disable-devices        disable all devices
148   --enable-filter=NAME     enable filter NAME
149   --disable-filter=NAME    disable filter NAME
150   --disable-filters        disable all filters
151   --list-decoders          show all available decoders
152   --list-encoders          show all available encoders
153   --list-hwaccels          show all available hardware accelerators
154   --list-muxers            show all available muxers
155   --list-demuxers          show all available demuxers
156   --list-parsers           show all available parsers
157   --list-protocols         show all available protocols
158   --list-bsfs              show all available bitstream filters
159   --list-indevs            show all available input devices
160   --list-outdevs           show all available output devices
161   --list-filters           show all available filters
162
163 External library support:
164   --enable-avisynth        enable reading of AVISynth script files [no]
165   --enable-bzlib           enable bzlib [autodetect]
166   --enable-frei0r          enable frei0r video filtering
167   --enable-gnutls          enable gnutls [no]
168   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
169   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
170   --enable-libopencv       enable video filtering via libopencv [no]
171   --enable-libcdio         enable audio CD grabbing with libcdio
172   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
173                            and libraw1394 [no]
174   --enable-libdirac        enable Dirac support via libdirac [no]
175   --enable-libfaac         enable FAAC support via libfaac [no]
176   --enable-libfreetype     enable libfreetype [no]
177   --enable-libgsm          enable GSM support via libgsm [no]
178   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
179   --enable-libnut          enable NUT (de)muxing via libnut,
180                            native (de)muxer exists [no]
181   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
182   --enable-libpulse        enable Pulseaudio input via libpulse [no]
183   --enable-librtmp         enable RTMP[E] support via librtmp [no]
184   --enable-libschroedinger enable Dirac support via libschroedinger [no]
185   --enable-libspeex        enable Speex support via libspeex [no]
186   --enable-libtheora       enable Theora encoding via libtheora [no]
187   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
188   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
189   --enable-libvorbis       enable Vorbis encoding via libvorbis,
190                            native implementation exists [no]
191   --enable-libvpx          enable VP8 support via libvpx [no]
192   --enable-libx264         enable H.264 encoding via x264 [no]
193   --enable-libxavs         enable AVS encoding via xavs [no]
194   --enable-libxvid         enable Xvid encoding via xvidcore,
195                            native MPEG-4/Xvid encoder exists [no]
196   --enable-openssl         enable openssl [no]
197   --enable-zlib            enable zlib [autodetect]
198
199 Advanced options (experts only):
200   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
201   --enable-cross-compile   assume a cross-compiler is used
202   --sysroot=PATH           root of cross-build tree
203   --sysinclude=PATH        location of cross-build system headers
204   --target-os=OS           compiler targets OS [$target_os]
205   --target-exec=CMD        command to run executables on target
206   --target-path=DIR        path to view of build directory on target
207   --nm=NM                  use nm tool
208   --ar=AR                  use archive tool AR [$ar_default]
209   --as=AS                  use assembler AS [$as_default]
210   --cc=CC                  use C compiler CC [$cc_default]
211   --ld=LD                  use linker LD
212   --host-cc=HOSTCC         use host C compiler HOSTCC
213   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
214   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
215   --host-libs=HLIBS        use libs HLIBS when linking for host
216   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
217   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
218   --extra-libs=ELIBS       add ELIBS [$ELIBS]
219   --extra-version=STRING   version string suffix []
220   --build-suffix=SUFFIX    library name suffix []
221   --arch=ARCH              select architecture [$arch]
222   --cpu=CPU                select the minimum required CPU (affects
223                            instruction selection, may crash on older CPUs)
224   --disable-asm            disable all assembler optimizations
225   --disable-altivec        disable AltiVec optimizations
226   --disable-amd3dnow       disable 3DNow! optimizations
227   --disable-amd3dnowext    disable 3DNow! extended optimizations
228   --disable-mmx            disable MMX optimizations
229   --disable-mmx2           disable MMX2 optimizations
230   --disable-sse            disable SSE optimizations
231   --disable-ssse3          disable SSSE3 optimizations
232   --disable-avx            disable AVX optimizations
233   --disable-armv5te        disable armv5te optimizations
234   --disable-armv6          disable armv6 optimizations
235   --disable-armv6t2        disable armv6t2 optimizations
236   --disable-armvfp         disable ARM VFP optimizations
237   --disable-mmi            disable MMI optimizations
238   --disable-neon           disable NEON optimizations
239   --disable-vis            disable VIS optimizations
240   --disable-yasm           disable use of yasm assembler
241   --enable-pic             build position-independent code
242   --malloc-prefix=PFX      prefix malloc and related names with PFX
243   --enable-sram            allow use of on-chip SRAM
244   --disable-symver         disable symbol versioning
245   --optflags               override optimization-related compiler flags
246
247 Developer options (useful when working on Libav itself):
248   --disable-debug          disable debugging symbols
249   --enable-debug=LEVEL     set the debug level [$debuglevel]
250   --disable-optimizations  disable compiler optimizations
251   --enable-extra-warnings  enable more compiler warnings
252   --samples=PATH           location of test samples for FATE, if not set use
253                            \$FATE_SAMPLES at make invocation time.
254   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
255                            should be used only for debugging purposes)
256
257 NOTE: Object files are built at the place where configure is launched.
258 EOF
259   exit 0
260 }
261
262 quotes='""'
263
264 log(){
265     echo "$@" >> $logfile
266 }
267
268 log_file(){
269     log BEGIN $1
270     pr -n -t $1 >> $logfile
271     log END $1
272 }
273
274 echolog(){
275     log "$@"
276     echo "$@"
277 }
278
279 warn(){
280     log "WARNING: $*"
281     WARNINGS="${WARNINGS}WARNING: $*\n"
282 }
283
284 die(){
285     echolog "$@"
286     cat <<EOF
287
288 If you think configure made a mistake, make sure you are using the latest
289 version from Git.  If the latest version fails, report the problem to the
290 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
291 EOF
292     if disabled logging; then
293         cat <<EOF
294 Rerun configure with logging enabled (do not use --disable-logging), and
295 include the log this produces with your report.
296 EOF
297     else
298 cat <<EOF
299 Include the log file "$logfile" produced by configure as this will help
300 solving the problem.
301 EOF
302     fi
303     exit 1
304 }
305
306 # Avoid locale weirdness, besides we really just want to translate ASCII.
307 toupper(){
308     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
309 }
310
311 tolower(){
312     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
313 }
314
315 c_escape(){
316     echo "$*" | sed 's/["\\]/\\\0/g'
317 }
318
319 sh_quote(){
320     v=$(echo "$1" | sed "s/'/'\\\\''/g")
321     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
322     echo "$v"
323 }
324
325 cleanws(){
326     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
327 }
328
329 filter(){
330     pat=$1
331     shift
332     for v; do
333         eval "case $v in $pat) echo $v ;; esac"
334     done
335 }
336
337 filter_out(){
338     pat=$1
339     shift
340     for v; do
341         eval "case $v in $pat) ;; *) echo $v ;; esac"
342     done
343 }
344
345 map(){
346     m=$1
347     shift
348     for v; do eval $m; done
349 }
350
351 set_all(){
352     value=$1
353     shift
354     for var in $*; do
355         eval $var=$value
356     done
357 }
358
359 set_weak(){
360     value=$1
361     shift
362     for var; do
363         eval : \${$var:=$value}
364     done
365 }
366
367 set_safe(){
368     var=$1
369     shift
370     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
371 }
372
373 get_safe(){
374     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
375 }
376
377 pushvar(){
378     for var in $*; do
379         eval level=\${${var}_level:=0}
380         eval ${var}_${level}="\$$var"
381         eval ${var}_level=$(($level+1))
382     done
383 }
384
385 popvar(){
386     for var in $*; do
387         eval level=\${${var}_level:-0}
388         test $level = 0 && continue
389         eval level=$(($level-1))
390         eval $var="\${${var}_${level}}"
391         eval ${var}_level=$level
392         eval unset ${var}_${level}
393     done
394 }
395
396 enable(){
397     set_all yes $*
398 }
399
400 disable(){
401     set_all no $*
402 }
403
404 enable_weak(){
405     set_weak yes $*
406 }
407
408 disable_weak(){
409     set_weak no $*
410 }
411
412 enable_safe(){
413     for var; do
414         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
415     done
416 }
417
418 disable_safe(){
419     for var; do
420         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
421     done
422 }
423
424 do_enable_deep(){
425     for var; do
426         enabled $var && continue
427         eval sel="\$${var}_select"
428         eval sgs="\$${var}_suggest"
429         pushvar var sgs
430         enable_deep $sel
431         popvar sgs
432         enable_deep_weak $sgs
433         popvar var
434     done
435 }
436
437 enable_deep(){
438     do_enable_deep $*
439     enable $*
440 }
441
442 enable_deep_weak(){
443     do_enable_deep $*
444     enable_weak $*
445 }
446
447 enabled(){
448     test "${1#!}" = "$1" && op== || op=!=
449     eval test "x\$${1#!}" $op "xyes"
450 }
451
452 disabled(){
453     test "${1#!}" = "$1" && op== || op=!=
454     eval test "x\$${1#!}" $op "xno"
455 }
456
457 enabled_all(){
458     for opt; do
459         enabled $opt || return 1
460     done
461 }
462
463 disabled_all(){
464     for opt; do
465         disabled $opt || return 1
466     done
467 }
468
469 enabled_any(){
470     for opt; do
471         enabled $opt && return 0
472     done
473 }
474
475 disabled_any(){
476     for opt; do
477         disabled $opt && return 0
478     done
479     return 1
480 }
481
482 set_default(){
483     for opt; do
484         eval : \${$opt:=\$${opt}_default}
485     done
486 }
487
488 is_in(){
489     value=$1
490     shift
491     for var in $*; do
492         [ $var = $value ] && return 0
493     done
494     return 1
495 }
496
497 check_deps(){
498     for cfg; do
499         cfg="${cfg#!}"
500         enabled ${cfg}_checking && die "Circular dependency for $cfg."
501         disabled ${cfg}_checking && continue
502         enable ${cfg}_checking
503
504         eval dep_all="\$${cfg}_deps"
505         eval dep_any="\$${cfg}_deps_any"
506         eval dep_sel="\$${cfg}_select"
507         eval dep_sgs="\$${cfg}_suggest"
508         eval dep_ifa="\$${cfg}_if"
509         eval dep_ifn="\$${cfg}_if_any"
510
511         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
512         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
513         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
514
515         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
516         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
517         enabled_all  $dep_all || disable $cfg
518         enabled_any  $dep_any || disable $cfg
519         disabled_any $dep_sel && disable $cfg
520
521         if enabled $cfg; then
522             eval dep_extralibs="\$${cfg}_extralibs"
523             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
524             enable_deep $dep_sel
525             enable_deep_weak $dep_sgs
526         fi
527
528         disable ${cfg}_checking
529     done
530 }
531
532 print_config_h(){
533     enabled $1 && v=1 || v=0
534     echo "#define $2 $v"
535 }
536
537 print_config_mak(){
538     enabled $1 && v= || v=!
539     echo "$v$2=yes"
540 }
541
542 print_config_asm(){
543     enabled $1 && v=1 || v=0
544     echo "%define $2 $v"
545 }
546
547 print_config(){
548     pfx=$1
549     files=$2
550     shift 2
551     for cfg; do
552         ucname="$(toupper $cfg)"
553         for f in $files; do
554             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
555         done
556     done
557 }
558
559 print_enabled(){
560     test "$1" = -n && end=" " && shift || end="\n"
561     suf=$1
562     shift
563     for v; do
564         enabled $v && printf "%s$end" ${v%$suf};
565     done
566 }
567
568 append(){
569     var=$1
570     shift
571     eval "$var=\"\$$var $*\""
572 }
573
574 prepend(){
575     var=$1
576     shift
577     eval "$var=\"$* \$$var\""
578 }
579
580 add_cppflags(){
581     append CPPFLAGS $($filter_cppflags "$@")
582 }
583
584 add_cflags(){
585     append CFLAGS $($filter_cflags "$@")
586 }
587
588 add_asflags(){
589     append ASFLAGS $($filter_asflags "$@")
590 }
591
592 add_ldflags(){
593     append LDFLAGS "$@"
594 }
595
596 add_extralibs(){
597     prepend extralibs "$@"
598 }
599
600 check_cmd(){
601     log "$@"
602     "$@" >> $logfile 2>&1
603 }
604
605 check_cc(){
606     log check_cc "$@"
607     cat > $TMPC
608     log_file $TMPC
609     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
610 }
611
612 check_cpp(){
613     log check_cpp "$@"
614     cat > $TMPC
615     log_file $TMPC
616     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
617 }
618
619 check_as(){
620     log check_as "$@"
621     cat > $TMPC
622     log_file $TMPC
623     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
624 }
625
626 check_asm(){
627     log check_asm "$@"
628     name="$1"
629     code="$2"
630     shift 2
631     disable $name
632     check_as "$@" <<EOF && enable $name
633 void foo(void){ __asm__ volatile($code); }
634 EOF
635 }
636
637 check_yasm(){
638     log check_yasm "$@"
639     echo "$1" > $TMPS
640     log_file $TMPS
641     shift 1
642     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
643 }
644
645 check_ld(){
646     log check_ld "$@"
647     flags=''
648     libs=''
649     for f; do
650         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
651     done
652     check_cc $($filter_cflags $flags) || return
653     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
654 }
655
656 check_cppflags(){
657     log check_cppflags "$@"
658     set -- $($filter_cppflags "$@")
659     check_cc "$@" <<EOF && append CPPFLAGS "$@"
660 int x;
661 EOF
662 }
663
664 check_cflags(){
665     log check_cflags "$@"
666     set -- $($filter_cflags "$@")
667     check_cc "$@" <<EOF && append CFLAGS "$@"
668 int x;
669 EOF
670 }
671
672 test_ldflags(){
673     log test_ldflags "$@"
674     check_ld "$@" <<EOF
675 int main(void){ return 0; }
676 EOF
677 }
678
679 check_ldflags(){
680     log check_ldflags "$@"
681     test_ldflags "$@" && add_ldflags "$@"
682 }
683
684 check_header(){
685     log check_header "$@"
686     header=$1
687     shift
688     disable_safe $header
689     check_cpp "$@" <<EOF && enable_safe $header
690 #include <$header>
691 int x;
692 EOF
693 }
694
695 check_func(){
696     log check_func "$@"
697     func=$1
698     shift
699     disable $func
700     check_ld "$@" <<EOF && enable $func
701 extern int $func();
702 int main(void){ $func(); }
703 EOF
704 }
705
706 check_mathfunc(){
707     log check_mathfunc "$@"
708     func=$1
709     shift
710     disable $func
711     check_ld "$@" <<EOF && enable $func
712 #include <math.h>
713 float foo(float f) { return $func(f); }
714 int main(void){ return 0; }
715 EOF
716 }
717
718 check_func_headers(){
719     log check_func_headers "$@"
720     headers=$1
721     funcs=$2
722     shift 2
723     {
724         for hdr in $headers; do
725             echo "#include <$hdr>"
726         done
727         for func in $funcs; do
728             echo "long check_$func(void) { return (long) $func; }"
729         done
730         echo "int main(void) { return 0; }"
731     } | check_ld "$@" && enable $funcs && enable_safe $headers
732 }
733
734 check_cpp_condition(){
735     log check_cpp_condition "$@"
736     header=$1
737     condition=$2
738     shift 2
739     check_cpp $($filter_cppflags "$@") <<EOF
740 #include <$header>
741 #if !($condition)
742 #error "unsatisfied condition: $condition"
743 #endif
744 EOF
745 }
746
747 check_lib(){
748     log check_lib "$@"
749     header="$1"
750     func="$2"
751     shift 2
752     check_header $header && check_func $func "$@" && add_extralibs "$@"
753 }
754
755 check_lib2(){
756     log check_lib2 "$@"
757     headers="$1"
758     funcs="$2"
759     shift 2
760     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
761 }
762
763 check_pkg_config(){
764     log check_pkg_config "$@"
765     pkg="$1"
766     headers="$2"
767     funcs="$3"
768     shift 3
769     $pkg_config --exists $pkg || return
770     pkg_cflags=$($pkg_config --cflags $pkg)
771     pkg_libs=$($pkg_config --libs $pkg)
772     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
773         set_safe ${pkg}_cflags $pkg_cflags   &&
774         set_safe ${pkg}_libs   $pkg_libs
775 }
776
777 check_exec(){
778     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
779 }
780
781 check_exec_crash(){
782     code=$(cat)
783
784     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
785     # are safe but may not be available everywhere.  Thus we use
786     # raise(SIGTERM) instead.  The check is run in a subshell so we
787     # can redirect the "Terminated" message from the shell.  SIGBUS
788     # is not defined by standard C so it is used conditionally.
789
790     (check_exec "$@") >> $logfile 2>&1 <<EOF
791 #include <signal.h>
792 static void sighandler(int sig){
793     raise(SIGTERM);
794 }
795 int main(void){
796     signal(SIGILL, sighandler);
797     signal(SIGFPE, sighandler);
798     signal(SIGSEGV, sighandler);
799 #ifdef SIGBUS
800     signal(SIGBUS, sighandler);
801 #endif
802     { $code }
803 }
804 EOF
805 }
806
807 check_type(){
808     log check_type "$@"
809     headers=$1
810     type=$2
811     shift 2
812     disable_safe "$type"
813     incs=""
814     for hdr in $headers; do
815         incs="$incs
816 #include <$hdr>"
817     done
818     check_cc "$@" <<EOF && enable_safe "$type"
819 $incs
820 $type v;
821 EOF
822 }
823
824 check_struct(){
825     log check_type "$@"
826     headers=$1
827     struct=$2
828     member=$3
829     shift 3
830     disable_safe "${struct}_${member}"
831     incs=""
832     for hdr in $headers; do
833         incs="$incs
834 #include <$hdr>"
835     done
836     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
837 $incs
838 const void *p = &(($struct *)0)->$member;
839 EOF
840 }
841
842 require(){
843     name="$1"
844     header="$2"
845     func="$3"
846     shift 3
847     check_lib $header $func "$@" || die "ERROR: $name not found"
848 }
849
850 require2(){
851     name="$1"
852     headers="$2"
853     func="$3"
854     shift 3
855     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
856 }
857
858 require_pkg_config(){
859     pkg="$1"
860     check_pkg_config "$@" || die "ERROR: $pkg not found"
861     add_cflags    $(get_safe ${pkg}_cflags)
862     add_extralibs $(get_safe ${pkg}_libs)
863 }
864
865 check_host_cc(){
866     log check_host_cc "$@"
867     cat > $TMPC
868     log_file $TMPC
869     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
870 }
871
872 check_host_cflags(){
873     log check_host_cflags "$@"
874     check_host_cc "$@" <<EOF && append host_cflags "$@"
875 int x;
876 EOF
877 }
878
879 apply(){
880     file=$1
881     shift
882     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
883 }
884
885 cp_if_changed(){
886     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
887     mkdir -p "$(dirname $2)"
888     cp -f "$1" "$2"
889 }
890
891 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
892 # system-dependent things.
893
894 COMPONENT_LIST="
895     bsfs
896     decoders
897     demuxers
898     encoders
899     filters
900     hwaccels
901     indevs
902     muxers
903     outdevs
904     parsers
905     protocols
906 "
907
908 PROGRAM_LIST="
909     avconv
910     avplay
911     avprobe
912     avserver
913 "
914
915 CONFIG_LIST="
916     $COMPONENT_LIST
917     $PROGRAM_LIST
918     aandct
919     ac3dsp
920     avcodec
921     avdevice
922     avfilter
923     avformat
924     avisynth
925     bzlib
926     dct
927     doc
928     dwt
929     dxva2
930     fastdiv
931     fft
932     frei0r
933     gnutls
934     golomb
935     gpl
936     gray
937     h264chroma
938     h264dsp
939     h264pred
940     hardcoded_tables
941     huffman
942     libcdio
943     libdc1394
944     libdirac
945     libfaac
946     libfreetype
947     libgsm
948     libmp3lame
949     libnut
950     libopencore_amrnb
951     libopencore_amrwb
952     libopencv
953     libopenjpeg
954     libpulse
955     librtmp
956     libschroedinger
957     libspeex
958     libtheora
959     libvo_aacenc
960     libvo_amrwbenc
961     libvorbis
962     libvpx
963     libx264
964     libxavs
965     libxvid
966     lpc
967     lsp
968     mdct
969     memalign_hack
970     mpegaudiodsp
971     network
972     nonfree
973     openssl
974     pic
975     rdft
976     rtpdec
977     runtime_cpudetect
978     safe_bitstream_reader
979     shared
980     sinewin
981     small
982     sram
983     static
984     swscale
985     swscale_alpha
986     thumb
987     vaapi
988     vda
989     vdpau
990     version3
991     xmm_clobber_test
992     x11grab
993     zlib
994 "
995
996 THREADS_LIST='
997     pthreads
998     w32threads
999 '
1000
1001 ARCH_LIST='
1002     alpha
1003     arm
1004     avr32
1005     avr32_ap
1006     avr32_uc
1007     bfin
1008     ia64
1009     m68k
1010     mips
1011     mips64
1012     parisc
1013     ppc
1014     ppc64
1015     s390
1016     sh4
1017     sparc
1018     sparc64
1019     tomi
1020     x86
1021     x86_32
1022     x86_64
1023 '
1024
1025 ARCH_EXT_LIST='
1026     altivec
1027     amd3dnow
1028     amd3dnowext
1029     armv5te
1030     armv6
1031     armv6t2
1032     armvfp
1033     avx
1034     mmi
1035     mmx
1036     mmx2
1037     neon
1038     ppc4xx
1039     sse
1040     ssse3
1041     vfpv3
1042     vis
1043 '
1044
1045 HAVE_LIST_PUB='
1046     bigendian
1047     fast_unaligned
1048 '
1049
1050 HAVE_LIST="
1051     $ARCH_EXT_LIST
1052     $HAVE_LIST_PUB
1053     $THREADS_LIST
1054     aligned_stack
1055     alsa_asoundlib_h
1056     altivec_h
1057     arpa_inet_h
1058     asm_mod_y
1059     attribute_may_alias
1060     attribute_packed
1061     closesocket
1062     cmov
1063     dcbzl
1064     dev_bktr_ioctl_bt848_h
1065     dev_bktr_ioctl_meteor_h
1066     dev_ic_bt8xx_h
1067     dev_video_bktr_ioctl_bt848_h
1068     dev_video_meteor_ioctl_meteor_h
1069     dlfcn_h
1070     dlopen
1071     dos_paths
1072     ebp_available
1073     ebx_available
1074     exp2
1075     exp2f
1076     fast_64bit
1077     fast_clz
1078     fast_cmov
1079     fcntl
1080     fork
1081     getaddrinfo
1082     gethrtime
1083     GetProcessAffinityMask
1084     GetProcessMemoryInfo
1085     GetProcessTimes
1086     getrusage
1087     gnu_as
1088     ibm_asm
1089     inet_aton
1090     inline_asm
1091     isatty
1092     ldbrx
1093     libdc1394_1
1094     libdc1394_2
1095     llrint
1096     llrintf
1097     local_aligned_16
1098     local_aligned_8
1099     localtime_r
1100     log2
1101     log2f
1102     loongson
1103     lrint
1104     lrintf
1105     lzo1x_999_compress
1106     machine_ioctl_bt848_h
1107     machine_ioctl_meteor_h
1108     malloc_h
1109     MapViewOfFile
1110     memalign
1111     mkstemp
1112     mmap
1113     poll_h
1114     posix_memalign
1115     round
1116     roundf
1117     sched_getaffinity
1118     sdl
1119     sdl_video_size
1120     setmode
1121     setrlimit
1122     sndio_h
1123     socklen_t
1124     soundcard_h
1125     strerror_r
1126     strptime
1127     strtok_r
1128     struct_addrinfo
1129     struct_ipv6_mreq
1130     struct_rusage_ru_maxrss
1131     struct_sockaddr_in6
1132     struct_sockaddr_sa_len
1133     struct_sockaddr_storage
1134     struct_v4l2_frmivalenum_discrete
1135     symver
1136     symver_asm_label
1137     symver_gnu_asm
1138     sysconf
1139     sysctl
1140     sys_mman_h
1141     sys_param_h
1142     sys_resource_h
1143     sys_select_h
1144     sys_soundcard_h
1145     sys_videoio_h
1146     threads
1147     trunc
1148     truncf
1149     vfp_args
1150     VirtualAlloc
1151     winsock2_h
1152     xform_asm
1153     xmm_clobbers
1154     yasm
1155 "
1156
1157 # options emitted with CONFIG_ prefix but not available on command line
1158 CONFIG_EXTRA="
1159     avutil
1160     gplv3
1161     lgplv3
1162 "
1163
1164 CMDLINE_SELECT="
1165     $ARCH_EXT_LIST
1166     $CONFIG_LIST
1167     $THREADS_LIST
1168     asm
1169     cross_compile
1170     debug
1171     extra_warnings
1172     logging
1173     optimizations
1174     symver
1175     yasm
1176 "
1177
1178 PATHS_LIST='
1179     bindir
1180     datadir
1181     incdir
1182     libdir
1183     mandir
1184     prefix
1185     shlibdir
1186 '
1187
1188 CMDLINE_SET="
1189     $PATHS_LIST
1190     ar
1191     arch
1192     as
1193     build_suffix
1194     cc
1195     cpu
1196     cross_prefix
1197     dep_cc
1198     extra_version
1199     host_cc
1200     host_cflags
1201     host_ldflags
1202     host_libs
1203     host_os
1204     ld
1205     logfile
1206     malloc_prefix
1207     nm
1208     optflags
1209     pkg_config
1210     samples
1211     sysinclude
1212     sysroot
1213     target_exec
1214     target_os
1215     target_path
1216 "
1217
1218 CMDLINE_APPEND="
1219     extra_cflags
1220 "
1221
1222 # code dependency declarations
1223
1224 # architecture extensions
1225
1226 armv5te_deps="arm"
1227 armv6_deps="arm"
1228 armv6t2_deps="arm"
1229 armvfp_deps="arm"
1230 neon_deps="arm"
1231 vfpv3_deps="armvfp"
1232
1233 mmi_deps="mips"
1234
1235 altivec_deps="ppc"
1236 ppc4xx_deps="ppc"
1237
1238 vis_deps="sparc"
1239
1240 x86_64_suggest="cmov fast_cmov"
1241 amd3dnow_deps="mmx"
1242 amd3dnowext_deps="amd3dnow"
1243 mmx_deps="x86"
1244 mmx2_deps="mmx"
1245 sse_deps="mmx"
1246 ssse3_deps="sse"
1247 avx_deps="ssse3"
1248
1249 aligned_stack_if_any="ppc x86"
1250 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1251 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1252 fast_unaligned_if_any="armv6 ppc x86"
1253
1254 inline_asm_deps="!tms470"
1255 need_memalign="altivec neon sse"
1256
1257 symver_if_any="symver_asm_label symver_gnu_asm"
1258
1259 # subsystems
1260 dct_select="rdft"
1261 mdct_select="fft"
1262 rdft_select="fft"
1263 mpegaudiodsp_select="dct"
1264
1265 # decoders / encoders / hardware accelerators
1266 aac_decoder_select="mdct sinewin"
1267 aac_encoder_select="mdct sinewin"
1268 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1269 ac3_decoder_select="mdct ac3dsp ac3_parser"
1270 ac3_encoder_select="mdct ac3dsp"
1271 ac3_fixed_encoder_select="mdct ac3dsp"
1272 alac_encoder_select="lpc"
1273 amrnb_decoder_select="lsp"
1274 amrwb_decoder_select="lsp"
1275 atrac1_decoder_select="mdct sinewin"
1276 atrac3_decoder_select="mdct"
1277 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1278 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1279 cavs_decoder_select="golomb"
1280 cook_decoder_select="mdct sinewin"
1281 cscd_decoder_suggest="zlib"
1282 dca_decoder_select="mdct"
1283 dnxhd_encoder_select="aandct"
1284 dxa_decoder_select="zlib"
1285 eac3_decoder_select="ac3_decoder"
1286 eac3_encoder_select="mdct ac3dsp"
1287 eamad_decoder_select="aandct"
1288 eatgq_decoder_select="aandct"
1289 eatqi_decoder_select="aandct"
1290 ffv1_decoder_select="golomb"
1291 flac_decoder_select="golomb"
1292 flac_encoder_select="golomb lpc"
1293 flashsv_decoder_select="zlib"
1294 flashsv_encoder_select="zlib"
1295 flashsv2_decoder_select="zlib"
1296 flv_decoder_select="h263_decoder"
1297 flv_encoder_select="h263_encoder"
1298 fraps_decoder_select="huffman"
1299 h261_encoder_select="aandct"
1300 h263_decoder_select="h263_parser"
1301 h263_encoder_select="aandct"
1302 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1303 h263i_decoder_select="h263_decoder"
1304 h263p_encoder_select="h263_encoder"
1305 h264_decoder_select="golomb h264chroma h264dsp h264pred"
1306 h264_dxva2_hwaccel_deps="dxva2api_h"
1307 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1308 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1309 h264_vda_hwaccel_select="vda h264_decoder"
1310 h264_vdpau_decoder_select="vdpau h264_decoder"
1311 imc_decoder_select="fft mdct sinewin"
1312 jpegls_decoder_select="golomb"
1313 jpegls_encoder_select="golomb"
1314 ljpeg_encoder_select="aandct"
1315 loco_decoder_select="golomb"
1316 mjpeg_encoder_select="aandct"
1317 mlp_decoder_select="mlp_parser"
1318 mp1_decoder_select="mpegaudiodsp"
1319 mp1float_decoder_select="mpegaudiodsp"
1320 mp2_decoder_select="mpegaudiodsp"
1321 mp2float_decoder_select="mpegaudiodsp"
1322 mp3_decoder_select="mpegaudiodsp"
1323 mp3adu_decoder_select="mpegaudiodsp"
1324 mp3adufloat_decoder_select="mpegaudiodsp"
1325 mp3float_decoder_select="mpegaudiodsp"
1326 mp3on4_decoder_select="mpegaudiodsp"
1327 mp3on4float_decoder_select="mpegaudiodsp"
1328 mpc7_decoder_select="mpegaudiodsp"
1329 mpc8_decoder_select="mpegaudiodsp"
1330 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1331 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1332 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1333 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1334 mpeg1video_encoder_select="aandct"
1335 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1336 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1337 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1338 mpeg2video_encoder_select="aandct"
1339 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1340 mpeg4_encoder_select="h263_encoder"
1341 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1342 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1343 msmpeg4v1_decoder_select="h263_decoder"
1344 msmpeg4v1_encoder_select="h263_encoder"
1345 msmpeg4v2_decoder_select="h263_decoder"
1346 msmpeg4v2_encoder_select="h263_encoder"
1347 msmpeg4v3_decoder_select="h263_decoder"
1348 msmpeg4v3_encoder_select="h263_encoder"
1349 nellymoser_decoder_select="mdct sinewin"
1350 nellymoser_encoder_select="mdct sinewin"
1351 png_decoder_select="zlib"
1352 png_encoder_select="zlib"
1353 qcelp_decoder_select="lsp"
1354 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1355 ra_144_encoder_select="lpc"
1356 rv10_decoder_select="h263_decoder"
1357 rv10_encoder_select="h263_encoder"
1358 rv20_decoder_select="h263_decoder"
1359 rv20_encoder_select="h263_encoder"
1360 rv30_decoder_select="golomb h264chroma h264pred"
1361 rv40_decoder_select="golomb h264chroma h264pred"
1362 shorten_decoder_select="golomb"
1363 sipr_decoder_select="lsp"
1364 snow_decoder_select="dwt"
1365 snow_encoder_select="aandct dwt"
1366 svq1_encoder_select="aandct"
1367 svq3_decoder_select="golomb h264chroma h264dsp h264pred"
1368 svq3_decoder_suggest="zlib"
1369 theora_decoder_select="vp3_decoder"
1370 tiff_decoder_suggest="zlib"
1371 tiff_encoder_suggest="zlib"
1372 truehd_decoder_select="mlp_decoder"
1373 tscc_decoder_select="zlib"
1374 twinvq_decoder_select="mdct lsp sinewin"
1375 vc1_decoder_select="h263_decoder h264chroma"
1376 vc1_dxva2_hwaccel_deps="dxva2api_h"
1377 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1378 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1379 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1380 vc1image_decoder_select="vc1_decoder"
1381 vorbis_decoder_select="mdct"
1382 vorbis_encoder_select="mdct"
1383 vp6_decoder_select="huffman"
1384 vp6a_decoder_select="vp6_decoder"
1385 vp6f_decoder_select="vp6_decoder"
1386 vp8_decoder_select="h264pred"
1387 wmapro_decoder_select="mdct sinewin"
1388 wmav1_decoder_select="mdct sinewin"
1389 wmav1_encoder_select="mdct sinewin"
1390 wmav2_decoder_select="mdct sinewin"
1391 wmav2_encoder_select="mdct sinewin"
1392 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1393 wmv1_decoder_select="h263_decoder"
1394 wmv1_encoder_select="h263_encoder"
1395 wmv2_decoder_select="h263_decoder"
1396 wmv2_encoder_select="h263_encoder"
1397 wmv3_decoder_select="vc1_decoder"
1398 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1399 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1400 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1401 wmv3image_decoder_select="wmv3_decoder"
1402 zlib_decoder_select="zlib"
1403 zlib_encoder_select="zlib"
1404 zmbv_decoder_select="zlib"
1405 zmbv_encoder_select="zlib"
1406
1407 vaapi_deps="va_va_h"
1408 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1409 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1410
1411 # parsers
1412 h264_parser_select="golomb h264chroma h264dsp h264pred"
1413
1414 # external libraries
1415 libdirac_decoder_deps="libdirac !libschroedinger"
1416 libfaac_encoder_deps="libfaac"
1417 libgsm_decoder_deps="libgsm"
1418 libgsm_encoder_deps="libgsm"
1419 libgsm_ms_decoder_deps="libgsm"
1420 libgsm_ms_encoder_deps="libgsm"
1421 libmp3lame_encoder_deps="libmp3lame"
1422 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1423 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1424 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1425 libopenjpeg_decoder_deps="libopenjpeg"
1426 libschroedinger_decoder_deps="libschroedinger"
1427 libschroedinger_encoder_deps="libschroedinger"
1428 libspeex_decoder_deps="libspeex"
1429 libspeex_encoder_deps="libspeex"
1430 libtheora_encoder_deps="libtheora"
1431 libvo_aacenc_encoder_deps="libvo_aacenc"
1432 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1433 libvorbis_encoder_deps="libvorbis"
1434 libvpx_decoder_deps="libvpx"
1435 libvpx_encoder_deps="libvpx"
1436 libx264_encoder_deps="libx264"
1437 libxavs_encoder_deps="libxavs"
1438 libxvid_encoder_deps="libxvid"
1439
1440 # demuxers / muxers
1441 ac3_demuxer_select="ac3_parser"
1442 asf_stream_muxer_select="asf_muxer"
1443 avisynth_demuxer_deps="avisynth"
1444 dirac_demuxer_select="dirac_parser"
1445 eac3_demuxer_select="ac3_parser"
1446 flac_demuxer_select="flac_parser"
1447 ipod_muxer_select="mov_muxer"
1448 libnut_demuxer_deps="libnut"
1449 libnut_muxer_deps="libnut"
1450 matroska_audio_muxer_select="matroska_muxer"
1451 matroska_demuxer_suggest="zlib bzlib"
1452 mov_demuxer_suggest="zlib"
1453 mp3_demuxer_select="mpegaudio_parser"
1454 mp4_muxer_select="mov_muxer"
1455 mpegtsraw_demuxer_select="mpegts_demuxer"
1456 mxf_d10_muxer_select="mxf_muxer"
1457 ogg_demuxer_select="golomb"
1458 psp_muxer_select="mov_muxer"
1459 rtp_demuxer_select="sdp_demuxer"
1460 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1461 rtsp_demuxer_select="http_protocol rtpdec"
1462 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1463 sap_demuxer_select="sdp_demuxer"
1464 sap_muxer_select="rtp_muxer rtp_protocol"
1465 sdp_demuxer_select="rtpdec"
1466 spdif_muxer_select="aac_parser"
1467 tg2_muxer_select="mov_muxer"
1468 tgp_muxer_select="mov_muxer"
1469 w64_demuxer_deps="wav_demuxer"
1470
1471 # indevs / outdevs
1472 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1473 alsa_outdev_deps="alsa_asoundlib_h"
1474 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1475 dv1394_indev_deps="dv1394 dv_demuxer"
1476 fbdev_indev_deps="linux_fb_h"
1477 jack_indev_deps="jack_jack_h"
1478 libcdio_indev_deps="libcdio"
1479 libdc1394_indev_deps="libdc1394"
1480 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1481 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1482 pulse_indev_deps="libpulse"
1483 sndio_indev_deps="sndio_h"
1484 sndio_outdev_deps="sndio_h"
1485 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1486 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1487 vfwcap_indev_extralibs="-lavicap32"
1488 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1489 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1490
1491 # protocols
1492 gopher_protocol_deps="network"
1493 httpproxy_protocol_deps="network"
1494 httpproxy_protocol_select="tcp_protocol"
1495 http_protocol_deps="network"
1496 http_protocol_select="tcp_protocol"
1497 https_protocol_select="tls_protocol"
1498 librtmp_protocol_deps="librtmp"
1499 librtmpe_protocol_deps="librtmp"
1500 librtmps_protocol_deps="librtmp"
1501 librtmpt_protocol_deps="librtmp"
1502 librtmpte_protocol_deps="librtmp"
1503 mmsh_protocol_select="http_protocol"
1504 mmst_protocol_deps="network"
1505 rtmp_protocol_deps="!librtmp_protocol"
1506 rtmp_protocol_select="tcp_protocol"
1507 rtp_protocol_select="udp_protocol"
1508 tcp_protocol_deps="network"
1509 tls_protocol_deps_any="openssl gnutls"
1510 tls_protocol_select="tcp_protocol"
1511 udp_protocol_deps="network"
1512
1513 # filters
1514 blackframe_filter_deps="gpl"
1515 boxblur_filter_deps="gpl"
1516 cropdetect_filter_deps="gpl"
1517 delogo_filter_deps="gpl"
1518 drawtext_filter_deps="libfreetype"
1519 frei0r_filter_deps="frei0r dlopen strtok_r"
1520 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1521 hqdn3d_filter_deps="gpl"
1522 ocv_filter_deps="libopencv"
1523 scale_filter_deps="swscale"
1524 yadif_filter_deps="gpl"
1525
1526 # libraries
1527 avdevice_deps="avcodec avformat"
1528 avformat_deps="avcodec"
1529
1530 # programs
1531 avconv_deps="avcodec avformat swscale"
1532 avplay_deps="avcodec avformat swscale sdl"
1533 avplay_select="rdft"
1534 avprobe_deps="avcodec avformat"
1535 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1536 avserver_extralibs='$ldl'
1537
1538 doc_deps="texi2html"
1539
1540 # tests
1541
1542 test_deps(){
1543     suf1=$1
1544     suf2=$2
1545     shift 2
1546     for v; do
1547         dep=${v%=*}
1548         tests=${v#*=}
1549         for name in ${tests}; do
1550             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1551         done
1552     done
1553 }
1554
1555 mxf_d10_test_deps="avfilter"
1556 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1557
1558 test_deps _encoder _decoder                                             \
1559     adpcm_ima_qt                                                        \
1560     adpcm_ima_wav                                                       \
1561     adpcm_ms                                                            \
1562     adpcm_swf                                                           \
1563     adpcm_yamaha=adpcm_yam                                              \
1564     alac                                                                \
1565     asv1                                                                \
1566     asv2                                                                \
1567     bmp                                                                 \
1568     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1569     dvvideo="dv dv_411 dv50"                                            \
1570     ffv1                                                                \
1571     flac                                                                \
1572     flashsv                                                             \
1573     flv                                                                 \
1574     adpcm_g726=g726                                                     \
1575     gif                                                                 \
1576     h261                                                                \
1577     h263="h263 h263p"                                                   \
1578     huffyuv                                                             \
1579     jpegls                                                              \
1580     mjpeg="jpg mjpeg ljpeg"                                             \
1581     mp2                                                                 \
1582     mpeg1video="mpeg mpeg1b"                                            \
1583     mpeg2video="mpeg2 mpeg2_422 mpeg2_idct_int mpeg2_ilace mpeg2_ivlc_qprd" \
1584     mpeg2video="mpeg2thread mpeg2thread_ilace"                          \
1585     mpeg4="mpeg4 mpeg4_adap mpeg4_qpel mpeg4_qprd mpeg4adv mpeg4nr"     \
1586     mpeg4="mpeg4thread error rc"                                        \
1587     msmpeg4v3=msmpeg4                                                   \
1588     msmpeg4v2                                                           \
1589     pbm=pbmpipe                                                         \
1590     pcx                                                                 \
1591     pgm="pgm pgmpipe"                                                   \
1592     png                                                                 \
1593     ppm="ppm ppmpipe"                                                   \
1594     rawvideo="rgb yuv"                                                  \
1595     roq                                                                 \
1596     rv10                                                                \
1597     rv20                                                                \
1598     sgi                                                                 \
1599     snow="snow snowll"                                                  \
1600     svq1                                                                \
1601     targa=tga                                                           \
1602     tiff                                                                \
1603     wmav1                                                               \
1604     wmav2                                                               \
1605     wmv1                                                                \
1606     wmv2                                                                \
1607
1608 test_deps _muxer _demuxer                                               \
1609     aiff                                                                \
1610     pcm_alaw=alaw                                                       \
1611     asf                                                                 \
1612     au                                                                  \
1613     avi                                                                 \
1614     dv=dv_fmt                                                           \
1615     ffm                                                                 \
1616     flv=flv_fmt                                                         \
1617     gxf                                                                 \
1618     matroska=mkv                                                        \
1619     mmf                                                                 \
1620     mov                                                                 \
1621     pcm_mulaw=mulaw                                                     \
1622     mxf="mxf mxf_d10"                                                   \
1623     nut                                                                 \
1624     ogg                                                                 \
1625     rawvideo=pixfmt                                                     \
1626     rm                                                                  \
1627     swf                                                                 \
1628     mpegts=ts                                                           \
1629     voc                                                                 \
1630     wav                                                                 \
1631     yuv4mpegpipe=yuv4mpeg                                               \
1632
1633 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder"
1634 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1635
1636 # default parameters
1637
1638 logfile="config.log"
1639
1640 # installation paths
1641 prefix_default="/usr/local"
1642 bindir_default='${prefix}/bin'
1643 datadir_default='${prefix}/share/avconv'
1644 incdir_default='${prefix}/include'
1645 libdir_default='${prefix}/lib'
1646 mandir_default='${prefix}/share/man'
1647 shlibdir_default="$libdir_default"
1648
1649 # toolchain
1650 ar_default="ar"
1651 cc_default="gcc"
1652 cc_version=\"unknown\"
1653 host_cc_default="gcc"
1654 ln_s="ln -sf"
1655 nm_default="nm"
1656 objformat="elf"
1657 pkg_config_default=pkg-config
1658 ranlib="ranlib"
1659 yasmexe="yasm"
1660
1661 nm_opts='-g'
1662 nogas=":"
1663
1664 # machine
1665 arch_default=$(uname -m)
1666 cpu="generic"
1667
1668 # OS
1669 target_os_default=$(tolower $(uname -s))
1670 host_os=$target_os_default
1671
1672 # configurable options
1673 enable $PROGRAM_LIST
1674
1675 enable avcodec
1676 enable avdevice
1677 enable avfilter
1678 enable avformat
1679 enable avutil
1680 enable swscale
1681
1682 enable asm
1683 enable debug
1684 enable doc
1685 enable fastdiv
1686 enable network
1687 enable optimizations
1688 enable safe_bitstream_reader
1689 enable static
1690 enable swscale_alpha
1691
1692 # build settings
1693 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1694 AVSERVERLDFLAGS=-Wl,-E
1695 LIBPREF="lib"
1696 LIBSUF=".a"
1697 FULLNAME='$(NAME)$(BUILDSUF)'
1698 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1699 SLIBPREF="lib"
1700 SLIBSUF=".so"
1701 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1702 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1703 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1704 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1705 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1706 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1707
1708 AS_O='-o $@'
1709 CC_O='-o $@'
1710
1711 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1712 host_libs='-lm'
1713
1714 target_path='$(CURDIR)'
1715
1716 # since the object filename is not given with the -MM flag, the compiler
1717 # is only able to print the basename, and we must add the path ourselves
1718 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1719 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1720
1721 # find source path
1722 if test -f configure; then
1723     source_path=.
1724 else
1725     source_path=$(cd $(dirname "$0"); pwd)
1726     echo "$source_path" | grep -q '[[:blank:]]' &&
1727         die "Out of tree builds are impossible with whitespace in source path."
1728     test -e "$source_path/config.h" &&
1729         die "Out of tree builds are impossible with config.h in source dir."
1730 fi
1731
1732 for v in "$@"; do
1733     r=${v#*=}
1734     l=${v%"$r"}
1735     r=$(sh_quote "$r")
1736     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1737 done
1738
1739 find_things(){
1740     thing=$1
1741     pattern=$2
1742     file=$source_path/$3
1743     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1744 }
1745
1746 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1747 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1748 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1749 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1750 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1751 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1752 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1753 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1754 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1755 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1756 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1757
1758 ALL_COMPONENTS="
1759     $BSF_LIST
1760     $DECODER_LIST
1761     $DEMUXER_LIST
1762     $ENCODER_LIST
1763     $FILTER_LIST
1764     $HWACCEL_LIST
1765     $INDEV_LIST
1766     $MUXER_LIST
1767     $OUTDEV_LIST
1768     $PARSER_LIST
1769     $PROTOCOL_LIST
1770 "
1771
1772 find_tests(){
1773     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1774 }
1775
1776 ACODEC_TESTS=$(find_tests acodec)
1777 VCODEC_TESTS=$(find_tests vsynth1)
1778 LAVF_TESTS=$(find_tests lavf)
1779 LAVFI_TESTS=$(find_tests lavfi)
1780 SEEK_TESTS=$(find_tests seek seek_)
1781
1782 ALL_TESTS="$ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
1783
1784 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1785
1786 for n in $COMPONENT_LIST; do
1787     v=$(toupper ${n%s})_LIST
1788     eval enable \$$v
1789     eval ${n}_if_any="\$$v"
1790 done
1791
1792 enable $ARCH_EXT_LIST $ALL_TESTS
1793
1794 die_unknown(){
1795     echo "Unknown option \"$1\"."
1796     echo "See $0 --help for available options."
1797     exit 1
1798 }
1799
1800 show_list() {
1801     suffix=_$1
1802     shift
1803     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1804     exit 0
1805 }
1806
1807 for opt do
1808     optval="${opt#*=}"
1809     case "$opt" in
1810     --extra-ldflags=*) add_ldflags $optval
1811     ;;
1812     --extra-libs=*) add_extralibs $optval
1813     ;;
1814     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1815     ;;
1816     --enable-debug=*) debuglevel="$optval"
1817     ;;
1818     --disable-everything)
1819     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1820     ;;
1821     --enable-*=*|--disable-*=*)
1822     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1823     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1824     eval list=\$$(toupper $thing)_LIST
1825     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1826     $action $(filter "$name" $list)
1827     ;;
1828     --enable-?*|--disable-?*)
1829     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1830     if is_in $option $COMPONENT_LIST; then
1831         test $action = disable && action=unset
1832         eval $action \$$(toupper ${option%s})_LIST
1833     elif is_in $option $CMDLINE_SELECT; then
1834         $action $option
1835     else
1836         die_unknown $opt
1837     fi
1838     ;;
1839     --list-*)
1840         NAME="${opt#--list-}"
1841         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1842         NAME=${NAME%s}
1843         eval show_list $NAME \$$(toupper $NAME)_LIST
1844     ;;
1845     --help|-h) show_help
1846     ;;
1847     *)
1848     optname="${opt%%=*}"
1849     optname="${optname#--}"
1850     optname=$(echo "$optname" | sed 's/-/_/g')
1851     if is_in $optname $CMDLINE_SET; then
1852         eval $optname='$optval'
1853     elif is_in $optname $CMDLINE_APPEND; then
1854         append $optname "$optval"
1855     else
1856          die_unknown $opt
1857     fi
1858     ;;
1859     esac
1860 done
1861
1862 disabled logging && logfile=/dev/null
1863
1864 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1865 set >> $logfile
1866
1867 test -n "$cross_prefix" && enable cross_compile
1868
1869 if enabled cross_compile; then
1870     test -n "$arch" && test -n "$target_os" ||
1871         die "Must specify target arch and OS when cross-compiling"
1872 fi
1873
1874 set_default arch target_os
1875
1876 ar_default="${cross_prefix}${ar_default}"
1877 cc_default="${cross_prefix}${cc_default}"
1878 nm_default="${cross_prefix}${nm_default}"
1879 pkg_config_default="${cross_prefix}${pkg_config_default}"
1880 ranlib="${cross_prefix}${ranlib}"
1881
1882 sysinclude_default="${sysroot}/usr/include"
1883
1884 set_default cc nm pkg_config sysinclude
1885 enabled cross_compile || host_cc_default=$cc
1886 set_default host_cc
1887
1888 if ! $pkg_config --version >/dev/null 2>&1; then
1889     warn "$pkg_config not found, library detection may fail."
1890     pkg_config=false
1891 fi
1892
1893 exesuf() {
1894     case $1 in
1895         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1896     esac
1897 }
1898
1899 EXESUF=$(exesuf $target_os)
1900 HOSTEXESUF=$(exesuf $host_os)
1901
1902 # set temporary file name
1903 : ${TMPDIR:=$TEMPDIR}
1904 : ${TMPDIR:=$TMP}
1905 : ${TMPDIR:=/tmp}
1906
1907 if ! check_cmd mktemp -u XXXXXX; then
1908     # simple replacement for missing mktemp
1909     # NOT SAFE FOR GENERAL USE
1910     mktemp(){
1911         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1912     }
1913 fi
1914
1915 tmpfile(){
1916     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1917         (set -C; exec > $tmp) 2>/dev/null ||
1918         die "Unable to create temporary file in $TMPDIR."
1919     append TMPFILES $tmp
1920     eval $1=$tmp
1921 }
1922
1923 trap 'rm -f -- $TMPFILES' EXIT
1924
1925 tmpfile TMPASM .asm
1926 tmpfile TMPC   .c
1927 tmpfile TMPE   $EXESUF
1928 tmpfile TMPH   .h
1929 tmpfile TMPO   .o
1930 tmpfile TMPS   .S
1931 tmpfile TMPSH  .sh
1932 tmpfile TMPV   .ver
1933
1934 unset -f mktemp
1935
1936 chmod +x $TMPE
1937
1938 # make sure we can execute files in $TMPDIR
1939 cat > $TMPSH 2>> $logfile <<EOF
1940 #! /bin/sh
1941 EOF
1942 chmod +x $TMPSH >> $logfile 2>&1
1943 if ! $TMPSH >> $logfile 2>&1; then
1944     cat <<EOF
1945 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1946 variable to another directory and make sure that it is not mounted noexec.
1947 EOF
1948     die "Sanity test failed."
1949 fi
1950
1951 filter_asflags=echo
1952 filter_cflags=echo
1953 filter_cppflags=echo
1954
1955 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1956     cc_type=llvm_gcc
1957     cc_version=__VERSION__
1958     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1959     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1960     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1961     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1962     speed_cflags='-O3'
1963     size_cflags='-Os'
1964 elif $cc -v 2>&1 | grep -qi ^gcc; then
1965     cc_type=gcc
1966     cc_version=__VERSION__
1967     gcc_version=$($cc --version | head -n1)
1968     gcc_basever=$($cc -dumpversion)
1969     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1970     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1971     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1972     if ! $cc -dumpversion | grep -q '^2\.'; then
1973         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1974         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1975     fi
1976     speed_cflags='-O3'
1977     size_cflags='-Os'
1978 elif $cc --version 2>/dev/null | grep -q Intel; then
1979     cc_type=icc
1980     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1981     cc_ident=$($cc --version | head -n1)
1982     icc_version=$($cc -dumpversion)
1983     CC_DEPFLAGS='-MMD'
1984     AS_DEPFLAGS='-MMD'
1985     speed_cflags='-O3'
1986     size_cflags='-Os'
1987     noopt_cflags='-O1'
1988 elif $cc -v 2>&1 | grep -q xlc; then
1989     cc_type=xlc
1990     cc_version="AV_STRINGIFY(__IBMC__)"
1991     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1992     speed_cflags='-O5'
1993     size_cflags='-O5 -qcompact'
1994 elif $cc -V 2>/dev/null | grep -q Compaq; then
1995     cc_type=ccc
1996     cc_version="AV_STRINGIFY(__DECC_VER)"
1997     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1998     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1999     debuglevel=3
2000     add_ldflags -Wl,-z,now # calls to libots crash without this
2001     speed_cflags='-fast'
2002     size_cflags='-O1'
2003 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2004     test -d "$sysroot" || die "No valid sysroot specified."
2005     cc_type=armcc
2006     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
2007     cc_ident=$($cc --vsn | head -n1)
2008     armcc_conf="$PWD/armcc.conf"
2009     $cc --arm_linux_configure                 \
2010         --arm_linux_config_file="$armcc_conf" \
2011         --configure_sysroot="$sysroot"        \
2012         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2013         die "Error creating armcc configuration file."
2014     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2015     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2016     as_default="${cross_prefix}gcc"
2017     CC_DEPFLAGS='-MMD'
2018     AS_DEPFLAGS='-MMD'
2019     speed_cflags='-O3'
2020     size_cflags='-Os'
2021     filter_asflags="filter_out -W${armcc_opt}*"
2022 elif $cc -version 2>/dev/null | grep -q TMS470; then
2023     cc_type=tms470
2024     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2025     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2026     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2027     CC_O='-fr=$(@D)'
2028     as_default="${cross_prefix}gcc"
2029     ld_default="${cross_prefix}gcc"
2030     TMPO=$(basename $TMPC .c).o
2031     append TMPFILES $TMPO
2032     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2033     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2034     AS_DEPFLAGS='-MMD'
2035     speed_cflags='-O3 -mf=5'
2036     size_cflags='-O3 -mf=2'
2037     filter_cflags=tms470_flags
2038     tms470_flags(){
2039         for flag; do
2040             case $flag in
2041                 -march=*|-mcpu=*)
2042                     case "${flag#*=}" in
2043                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2044                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2045                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2046                         armv6*|arm11*)          echo -mv=6   ;;
2047                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2048                                                 echo -mv=5e  ;;
2049                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2050                     esac
2051                     ;;
2052                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2053                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2054                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2055                 -msoft-float)   echo --float_support=vfplib       ;;
2056                 -O[0-3]|-mf=*)  echo $flag                        ;;
2057                 -g)             echo -g -mn                       ;;
2058                 -pds=*)         echo $flag                        ;;
2059             esac
2060         done
2061     }
2062 elif $cc -v 2>&1 | grep -q clang; then
2063     cc_type=clang
2064     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2065         cc_version=__clang_version__ || cc_version=__VERSION__
2066     cc_ident=$($cc --version | head -n1)
2067     CC_DEPFLAGS='-MMD'
2068     AS_DEPFLAGS='-MMD'
2069     speed_cflags='-O3'
2070     size_cflags='-Os'
2071 elif $cc -V 2>&1 | grep -q Sun; then
2072     cc_type=suncc
2073     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2074     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2075     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2076     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2077     add_ldflags -xc99
2078     speed_cflags='-O5'
2079     size_cflags='-O5 -xspace'
2080     filter_cflags=suncc_flags
2081     suncc_flags(){
2082         for flag; do
2083             case $flag in
2084                 -march=*|-mcpu=*)
2085                     case "${flag#*=}" in
2086                         native)                   echo -xtarget=native       ;;
2087                         v9|niagara)               echo -xarch=sparc          ;;
2088                         ultrasparc)               echo -xarch=sparcvis       ;;
2089                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2090                         i586|pentium)             echo -xchip=pentium        ;;
2091                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2092                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2093                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2094                         pentium4*)          echo -xtarget=pentium4           ;;
2095                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2096                         *-sse3)             echo -xarch=sse3                 ;;
2097                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2098                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2099                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2100                         k8|opteron|athlon64|athlon-fx)
2101                                                   echo -xarch=sse2a          ;;
2102                         athlon*)                  echo -xarch=pentium_proa   ;;
2103                     esac
2104                     ;;
2105                 -std=c99)             echo -xc99              ;;
2106                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2107                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2108                 -W*,*)                echo $flag              ;;
2109                 -f*-*|-W*)                                    ;;
2110                 *)                    echo $flag              ;;
2111             esac
2112         done
2113     }
2114 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2115     cc_type=pathscale
2116     cc_version=__PATHSCALE__
2117     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2118     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2119     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2120     speed_cflags='-O2'
2121     size_cflags='-Os'
2122     filter_cflags='filter_out -Wdisabled-optimization'
2123 elif $cc -v 2>&1 | grep -q Open64; then
2124     cc_type=open64
2125     cc_version=__OPEN64__
2126     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2127     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2128     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2129     speed_cflags='-O2'
2130     size_cflags='-Os'
2131     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2132 fi
2133
2134 test -n "$cc_type" && enable $cc_type ||
2135     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2136
2137 : ${as_default:=$cc}
2138 : ${dep_cc_default:=$cc}
2139 : ${ld_default:=$cc}
2140 set_default ar as dep_cc ld
2141
2142 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2143 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2144
2145 add_cflags $extra_cflags
2146 add_asflags $extra_cflags
2147
2148 if test -n "$sysroot"; then
2149     case "$cc_type" in
2150         gcc|llvm_gcc|clang)
2151             add_cppflags --sysroot="$sysroot"
2152             add_ldflags --sysroot="$sysroot"
2153         ;;
2154         tms470)
2155             add_cppflags -I"$sysinclude"
2156             add_ldflags  --sysroot="$sysroot"
2157         ;;
2158     esac
2159 fi
2160
2161 if test "$cpu" = host; then
2162     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2163
2164     case "$cc_type" in
2165         gcc|llvm_gcc)
2166             check_native(){
2167                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2168                 sed -n "/cc1.*$1=/{
2169                             s/.*$1=\\([^ ]*\\).*/\\1/
2170                             p
2171                             q
2172                         }" $TMPE
2173             }
2174             cpu=$(check_native -march || check_native -mcpu)
2175         ;;
2176     esac
2177
2178     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2179 fi
2180
2181 # Deal with common $arch aliases
2182 case "$arch" in
2183     arm*)
2184         arch="arm"
2185     ;;
2186     mips|mipsel|IP*)
2187         arch="mips"
2188     ;;
2189     mips64*)
2190         arch="mips"
2191         subarch="mips64"
2192     ;;
2193     parisc|hppa)
2194         arch="parisc"
2195     ;;
2196     parisc64|hppa64)
2197         arch="parisc"
2198         subarch="parisc64"
2199     ;;
2200     "Power Macintosh"|ppc|powerpc)
2201         arch="ppc"
2202     ;;
2203     ppc64|powerpc64)
2204         arch="ppc"
2205         subarch="ppc64"
2206     ;;
2207     s390|s390x)
2208         arch="s390"
2209     ;;
2210     sh4|sh)
2211         arch="sh4"
2212     ;;
2213     sun4u|sparc64)
2214         arch="sparc"
2215         subarch="sparc64"
2216     ;;
2217     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2218         arch="x86"
2219     ;;
2220 esac
2221
2222 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2223 enable $arch
2224
2225 # Add processor-specific flags
2226 if test "$cpu" = generic; then
2227     : do nothing
2228 elif enabled ppc; then
2229
2230     case $(tolower $cpu) in
2231         601|ppc601|powerpc601)
2232             cpuflags="-mcpu=601"
2233             disable altivec
2234         ;;
2235         603*|ppc603*|powerpc603*)
2236             cpuflags="-mcpu=603"
2237             disable altivec
2238         ;;
2239         604*|ppc604*|powerpc604*)
2240             cpuflags="-mcpu=604"
2241             disable altivec
2242         ;;
2243         g3|75*|ppc75*|powerpc75*)
2244             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2245             disable altivec
2246         ;;
2247         g4|745*|ppc745*|powerpc745*)
2248             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2249         ;;
2250         74*|ppc74*|powerpc74*)
2251             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2252         ;;
2253         g5|970|ppc970|powerpc970|power4*)
2254             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2255         ;;
2256         cell)
2257             cpuflags="-mcpu=cell"
2258             enable ldbrx
2259         ;;
2260         e500v2)
2261             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2262             disable altivec
2263         ;;
2264         e500)
2265             cpuflags="-mcpu=8540 -mhard-float"
2266             disable altivec
2267         ;;
2268     esac
2269
2270 elif enabled x86; then
2271
2272     case $cpu in
2273         i[345]86|pentium)
2274             cpuflags="-march=$cpu"
2275             disable mmx
2276         ;;
2277         # targets that do NOT support conditional mov (cmov)
2278         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2279             cpuflags="-march=$cpu"
2280             disable cmov
2281         ;;
2282         # targets that do support conditional mov (cmov)
2283         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2284             cpuflags="-march=$cpu"
2285             enable cmov
2286             enable fast_cmov
2287         ;;
2288         # targets that do support conditional mov but on which it's slow
2289         pentium4|pentium4m|prescott|nocona)
2290             cpuflags="-march=$cpu"
2291             enable cmov
2292             disable fast_cmov
2293         ;;
2294     esac
2295
2296 elif enabled sparc; then
2297
2298     case $cpu in
2299         niagara)
2300             cpuflags="-mcpu=$cpu"
2301             disable vis
2302         ;;
2303         sparc64)
2304             cpuflags="-mcpu=v9"
2305         ;;
2306     esac
2307
2308 elif enabled arm; then
2309
2310     case $cpu in
2311         armv*)
2312             cpuflags="-march=$cpu"
2313             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2314         ;;
2315         *)
2316             cpuflags="-mcpu=$cpu"
2317             case $cpu in
2318                 cortex-a*)                               subarch=armv7a  ;;
2319                 cortex-r*)                               subarch=armv7r  ;;
2320                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2321                 arm11*)                                  subarch=armv6   ;;
2322                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2323                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2324             esac
2325         ;;
2326     esac
2327
2328 elif enabled alpha; then
2329
2330     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2331
2332 elif enabled bfin; then
2333
2334     cpuflags="-mcpu=$cpu"
2335
2336 elif enabled mips; then
2337
2338     cpuflags="-march=$cpu"
2339
2340 elif enabled avr32; then
2341
2342     case $cpu in
2343         ap7[02]0[0-2])
2344             subarch="avr32_ap"
2345             cpuflags="-mpart=$cpu"
2346         ;;
2347         ap)
2348             subarch="avr32_ap"
2349             cpuflags="-march=$cpu"
2350         ;;
2351         uc3[ab]*)
2352             subarch="avr32_uc"
2353             cpuflags="-mcpu=$cpu"
2354         ;;
2355         uc)
2356             subarch="avr32_uc"
2357             cpuflags="-march=$cpu"
2358         ;;
2359     esac
2360
2361 fi
2362
2363 add_cflags $cpuflags
2364 add_asflags $cpuflags
2365
2366 # compiler sanity check
2367 check_exec <<EOF
2368 int main(void){ return 0; }
2369 EOF
2370 if test "$?" != 0; then
2371     echo "$cc is unable to create an executable file."
2372     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2373         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2374         echo "Only do this if you know what cross compiling means."
2375     fi
2376     die "C compiler test failed."
2377 fi
2378
2379 add_cppflags -D_ISOC99_SOURCE
2380 check_cflags -std=c99
2381 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2382 #include <stdlib.h>
2383 EOF
2384 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2385 #include <stdlib.h>
2386 EOF
2387
2388 check_host_cflags -std=c99
2389 check_host_cflags -Wall
2390
2391 case "$arch" in
2392     alpha|ia64|mips|parisc|sparc)
2393         spic=$shared
2394     ;;
2395     x86)
2396         subarch="x86_32"
2397         check_cc <<EOF && subarch="x86_64"
2398         int test[(int)sizeof(char*) - 7];
2399 EOF
2400         if test "$subarch" = "x86_64"; then
2401             spic=$shared
2402         fi
2403     ;;
2404 esac
2405
2406 enable $subarch
2407 enabled spic && enable pic
2408
2409 # OS specific
2410 case $target_os in
2411     haiku)
2412         prefix_default="/boot/common"
2413         network_extralibs="-lnetwork"
2414         host_libs=
2415         ;;
2416     sunos)
2417         AVSERVERLDFLAGS=""
2418         SHFLAGS='-shared -Wl,-h,$$(@F)'
2419         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2420         network_extralibs="-lsocket -lnsl"
2421         add_cppflags -D__EXTENSIONS__
2422         # When using suncc to build, the Solaris linker will mark
2423         # an executable with each instruction set encountered by
2424         # the Solaris assembler.  As our libraries contain their own
2425         # guards for processor-specific code, instead suppress
2426         # generation of the HWCAPS ELF section on Solaris x86 only.
2427         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2428         nm_opts='-P -g'
2429         ;;
2430     netbsd)
2431         disable symver
2432         oss_indev_extralibs="-lossaudio"
2433         oss_outdev_extralibs="-lossaudio"
2434         ;;
2435     openbsd)
2436         enable malloc_aligned
2437         # On OpenBSD 4.5. the compiler does not use PIC unless
2438         # explicitly using -fPIC. Libav builds fine without PIC,
2439         # however the generated executable will not do anything
2440         # (simply quits with exit-code 1, no crash, no output).
2441         # Thus explicitly enable PIC here.
2442         enable pic
2443         disable symver
2444         SHFLAGS='-shared'
2445         oss_indev_extralibs="-lossaudio"
2446         oss_outdev_extralibs="-lossaudio"
2447         ;;
2448     dragonfly)
2449         enable malloc_aligned
2450         disable symver
2451         ;;
2452     freebsd)
2453         enable malloc_aligned
2454         ;;
2455     bsd/os)
2456         add_extralibs -lpoll -lgnugetopt
2457         ;;
2458     darwin)
2459         enable malloc_aligned
2460         gas="gas-preprocessor.pl $cc"
2461         enabled ppc && add_asflags -force_cpusubtype_ALL
2462         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2463         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2464         add_ldflags -Wl,-dynamic,-search_paths_first
2465         SLIBSUF=".dylib"
2466         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2467         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2468         AVSERVERLDFLAGS=-Wl,-bind_at_load
2469         objformat="macho"
2470         enabled x86_64 && objformat="macho64"
2471         enabled_any pic shared ||
2472             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2473         ;;
2474     mingw32*)
2475         if test $target_os = "mingw32ce"; then
2476             disable network
2477         else
2478             target_os=mingw32
2479         fi
2480         LIBTARGET=i386
2481         if enabled x86_64; then
2482             enable malloc_aligned
2483             LIBTARGET="i386:x86-64"
2484         elif enabled arm; then
2485             LIBTARGET=arm-wince
2486         fi
2487         shlibdir_default="$bindir_default"
2488         SLIBPREF=""
2489         SLIBSUF=".dll"
2490         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2491         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2492         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2493         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2494         SLIB_INSTALL_LINKS=
2495         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2496         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2497         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'
2498         objformat="win32"
2499         dlltool="${cross_prefix}dlltool"
2500         enable dos_paths
2501         check_cflags -fno-common
2502         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2503                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2504                 die "ERROR: MinGW runtime version must be >= 3.15."
2505         add_cppflags -U__STRICT_ANSI__
2506         ;;
2507     cygwin*)
2508         target_os=cygwin
2509         shlibdir_default="$bindir_default"
2510         SLIBPREF="cyg"
2511         SLIBSUF=".dll"
2512         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2513         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2514         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2515         objformat="win32"
2516         enable dos_paths
2517         check_cflags -fno-common
2518         add_cppflags -U__STRICT_ANSI__
2519         ;;
2520     *-dos|freedos|opendos)
2521         network_extralibs="-lsocket"
2522         objformat="coff"
2523         enable dos_paths
2524         add_cppflags -U__STRICT_ANSI__
2525         ;;
2526     linux)
2527         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2528         enable dv1394
2529         ;;
2530     irix*)
2531         target_os=irix
2532         ranlib="echo ignoring ranlib"
2533         ;;
2534     os/2*)
2535         ln_s="cp -f"
2536         objformat="aout"
2537         add_cppflags -D_GNU_SOURCE
2538         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2539         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2540         AVSERVERLDFLAGS=""
2541         LIBSUF="_s.a"
2542         SLIBPREF=""
2543         SLIBSUF=".dll"
2544         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2545         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2546         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2547           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2548           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2549           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2550           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2551           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2552         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2553           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2554         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2555         enable dos_paths
2556         ;;
2557     gnu/kfreebsd)
2558         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2559         ;;
2560     gnu)
2561         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2562         ;;
2563     qnx)
2564         add_cppflags -D_QNX_SOURCE
2565         network_extralibs="-lsocket"
2566         ;;
2567     symbian)
2568         SLIBSUF=".dll"
2569         enable dos_paths
2570         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2571         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2572         add_ldflags -Wl,--target1-abs,--no-undefined \
2573                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2574                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2575         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2576                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2577                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2578         ;;
2579     none)
2580         ;;
2581     *)
2582         die "Unknown OS '$target_os'."
2583         ;;
2584 esac
2585
2586 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2587
2588 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2589
2590 set_default $PATHS_LIST
2591
2592 # we need to build at least one lib type
2593 if ! enabled_any static shared; then
2594     cat <<EOF
2595 At least one library type must be built.
2596 Specify --enable-static to build the static libraries or --enable-shared to
2597 build the shared libraries as well. To only build the shared libraries specify
2598 --disable-static in addition to --enable-shared.
2599 EOF
2600     exit 1;
2601 fi
2602
2603 die_license_disabled() {
2604     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2605 }
2606
2607 die_license_disabled gpl libcdio
2608 die_license_disabled gpl libx264
2609 die_license_disabled gpl libxavs
2610 die_license_disabled gpl libxvid
2611 die_license_disabled gpl x11grab
2612
2613 die_license_disabled nonfree libfaac
2614 die_license_disabled nonfree openssl
2615
2616 die_license_disabled version3 libopencore_amrnb
2617 die_license_disabled version3 libopencore_amrwb
2618 die_license_disabled version3 libvo_aacenc
2619 die_license_disabled version3 libvo_amrwbenc
2620
2621 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2622
2623 disabled optimizations || check_cflags -fomit-frame-pointer
2624
2625 enable_pic() {
2626     enable pic
2627     add_cppflags -DPIC
2628     add_cflags   -fPIC
2629     add_asflags  -fPIC
2630 }
2631
2632 enabled pic && enable_pic
2633
2634 check_cc <<EOF || die "Symbol mangling check failed."
2635 int ff_extern;
2636 EOF
2637 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2638 extern_prefix=${sym%%ff_extern*}
2639
2640 check_cc <<EOF && enable inline_asm
2641 void foo(void) { __asm__ volatile ("" ::); }
2642 EOF
2643
2644 _restrict=
2645 for restrict_keyword in restrict __restrict__ __restrict; do
2646     check_cc <<EOF && _restrict=$restrict_keyword && break
2647 void foo(char * $restrict_keyword p);
2648 EOF
2649 done
2650
2651 check_cc <<EOF && enable attribute_packed
2652 struct { int x; } __attribute__((packed)) x;
2653 EOF
2654
2655 check_cc <<EOF && enable attribute_may_alias
2656 union { int x; } __attribute__((may_alias)) x;
2657 EOF
2658
2659 check_cc <<EOF || die "endian test failed"
2660 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2661 EOF
2662 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2663
2664 if enabled alpha; then
2665
2666     check_cflags -mieee
2667
2668 elif enabled arm; then
2669
2670     enabled thumb && check_cflags -mthumb || check_cflags -marm
2671     nogas=die
2672
2673     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2674         enable vfp_args
2675     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2676         case "${cross_prefix:-$cc}" in
2677             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2678             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2679 __asm__ (".eabi_attribute 28, 1");
2680 int main(void) { return 0; }
2681 EOF
2682         esac
2683         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2684     fi
2685
2686     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2687     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2688     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2689     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2690     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2691     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2692
2693     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2694
2695     enabled_all armv6t2 shared !pic && enable_pic
2696
2697 elif enabled mips; then
2698
2699     check_asm loongson '"dmult.g $1, $2, $3"'
2700     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2701
2702 elif enabled ppc; then
2703
2704     enable local_aligned_8 local_aligned_16
2705
2706     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2707     check_asm ibm_asm   '"add 0, 0, 0"'
2708     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2709     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2710
2711     # AltiVec flags: The FSF version of GCC differs from the Apple version
2712     if enabled altivec; then
2713         nogas=warn
2714         check_cflags -maltivec -mabi=altivec &&
2715         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2716         check_cflags -faltivec
2717
2718         # check if our compiler supports Motorola AltiVec C API
2719         check_cc <<EOF || disable altivec
2720 $inc_altivec_h
2721 int main(void) {
2722     vector signed int v1, v2, v3;
2723     v1 = vec_add(v2,v3);
2724     return 0;
2725 }
2726 EOF
2727
2728         # check if our compiler supports braces for vector declarations
2729         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2730 $inc_altivec_h
2731 int main (void) { (vector int) {1}; return 0; }
2732 EOF
2733     fi
2734
2735 elif enabled sparc; then
2736
2737     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2738         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2739
2740 elif enabled x86; then
2741
2742     enable local_aligned_8 local_aligned_16
2743
2744     # check whether EBP is available on x86
2745     # As 'i' is stored on the stack, this program will crash
2746     # if the base pointer is used to access it because the
2747     # base pointer is cleared in the inline assembly code.
2748     check_exec_crash <<EOF && enable ebp_available
2749     volatile int i=0;
2750     __asm__ volatile (
2751         "xorl %%ebp, %%ebp"
2752     ::: "%ebp");
2753     return i;
2754 EOF
2755
2756     # check whether EBX is available on x86
2757     check_asm ebx_available '""::"b"(0)' &&
2758         check_asm ebx_available '"":::"%ebx"'
2759
2760     # check whether xmm clobbers are supported
2761     check_asm xmm_clobbers '"":::"%xmm0"'
2762
2763     # check whether binutils is new enough to compile SSSE3/MMX2
2764     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2765     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2766
2767     if ! disabled_any asm mmx yasm; then
2768         if check_cmd $yasmexe --version; then
2769             enabled x86_64 && yasm_extra="-m amd64"
2770             yasm_debug="-g dwarf2"
2771         elif check_cmd nasm -v; then
2772             yasmexe=nasm
2773             yasm_debug="-g -F dwarf"
2774             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2775         fi
2776
2777         YASMFLAGS="-f $objformat $yasm_extra"
2778         enabled pic               && append YASMFLAGS "-DPIC"
2779         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2780         case "$objformat" in
2781             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2782         esac
2783
2784         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2785             die "yasm not found, use --disable-yasm for a crippled build"
2786         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2787     fi
2788
2789     case "$cpu" in
2790         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2791             disable fast_clz
2792         ;;
2793     esac
2794
2795 fi
2796
2797 if enabled asm; then
2798     as=${gas:=$as}
2799     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2800         $nogas "GNU assembler not found, install gas-preprocessor"
2801 fi
2802
2803 check_ldflags -Wl,--as-needed
2804
2805 if check_func dlopen; then
2806     ldl=
2807 elif check_func dlopen -ldl; then
2808     ldl=-ldl
2809 fi
2810
2811 if enabled network; then
2812     check_type "sys/types.h sys/socket.h" socklen_t
2813     check_type netdb.h "struct addrinfo"
2814     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2815     check_type netinet/in.h "struct sockaddr_in6"
2816     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2817     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2818     # Prefer arpa/inet.h over winsock2
2819     if check_header arpa/inet.h ; then
2820         check_func closesocket
2821     elif check_header winsock2.h ; then
2822         check_func_headers winsock2.h closesocket -lws2 && \
2823             network_extralibs="-lws2" || \
2824         { check_func_headers winsock2.h closesocket -lws2_32 && \
2825             network_extralibs="-lws2_32"; }
2826         check_type ws2tcpip.h socklen_t
2827         check_type ws2tcpip.h "struct addrinfo"
2828         check_type ws2tcpip.h "struct ipv6_mreq"
2829         check_type ws2tcpip.h "struct sockaddr_in6"
2830         check_type ws2tcpip.h "struct sockaddr_storage"
2831         check_struct winsock2.h "struct sockaddr" sa_len
2832     else
2833         disable network
2834     fi
2835 fi
2836
2837 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2838 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2839
2840 check_func  fcntl
2841 check_func  fork
2842 check_func  getaddrinfo $network_extralibs
2843 check_func  gethrtime
2844 check_func  getrusage
2845 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2846 check_func  inet_aton $network_extralibs
2847 check_func  isatty
2848 check_func  localtime_r
2849 check_func  ${malloc_prefix}memalign            && enable memalign
2850 check_func  mkstemp
2851 check_func  mmap
2852 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2853 check_func  setrlimit
2854 check_func  strerror_r
2855 check_func  strptime
2856 check_func  strtok_r
2857 check_func  sched_getaffinity
2858 check_func  sysconf
2859 check_func  sysctl
2860 check_func_headers io.h setmode
2861 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2862 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2863 check_func_headers windows.h GetProcessAffinityMask
2864 check_func_headers windows.h GetProcessTimes
2865 check_func_headers windows.h MapViewOfFile
2866 check_func_headers windows.h VirtualAlloc
2867
2868 check_header dlfcn.h
2869 check_header dxva2api.h
2870 check_header malloc.h
2871 check_header poll.h
2872 check_header sys/mman.h
2873 check_header sys/param.h
2874 check_header sys/resource.h
2875 check_header sys/select.h
2876 check_header vdpau/vdpau.h
2877 check_header vdpau/vdpau_x11.h
2878 check_header X11/extensions/XvMClib.h
2879
2880 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2881 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2882
2883 if ! disabled w32threads && ! enabled pthreads; then
2884     check_func _beginthreadex && enable w32threads
2885 fi
2886
2887 # check for some common methods of building with pthread support
2888 # do this before the optional library checks as some of them require pthreads
2889 if ! disabled pthreads && ! enabled w32threads; then
2890     enable pthreads
2891     if check_func pthread_create; then
2892         :
2893     elif check_func pthread_create -pthread; then
2894         add_cflags -pthread
2895         add_extralibs -pthread
2896     elif check_func pthread_create -pthreads; then
2897         add_cflags -pthreads
2898         add_extralibs -pthreads
2899     elif check_func pthread_create -lpthreadGC2; then
2900         add_extralibs -lpthreadGC2
2901     elif ! check_lib pthread.h pthread_create -lpthread; then
2902         disable pthreads
2903     fi
2904 fi
2905
2906 for thread in $THREADS_LIST; do
2907     if enabled $thread; then
2908         test -n "$thread_type" &&
2909             die "ERROR: Only one thread type must be selected." ||
2910             thread_type="$thread"
2911     fi
2912 done
2913
2914 check_lib math.h sin -lm && LIBM="-lm"
2915 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2916
2917 check_mathfunc exp2
2918 check_mathfunc exp2f
2919 check_mathfunc llrint
2920 check_mathfunc llrintf
2921 check_mathfunc log2
2922 check_mathfunc log2f
2923 check_mathfunc lrint
2924 check_mathfunc lrintf
2925 check_mathfunc round
2926 check_mathfunc roundf
2927 check_mathfunc trunc
2928 check_mathfunc truncf
2929
2930 # these are off by default, so fail if requested and not available
2931 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2932 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2933 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
2934 enabled libdirac   && require_pkg_config dirac                          \
2935     "libdirac_decoder/dirac_parser.h"  \
2936     "dirac_decoder_init"
2937 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2938 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2939 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2940 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2941 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2942 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2943 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2944 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2945 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2946 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
2947 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2948 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2949 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2950 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2951 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2952 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2953 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2954 enabled libvpx     && {
2955     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2956                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2957     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2958                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2959 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2960                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2961                         die "ERROR: libx264 version must be >= 0.118."; }
2962 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2963 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2964 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
2965                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
2966                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
2967                         die "ERROR: openssl not found"; }
2968
2969 # libdc1394 check
2970 if enabled libdc1394; then
2971     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2972         enable libdc1394_2; } ||
2973     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2974         enable libdc1394_1; } ||
2975     die "ERROR: No version of libdc1394 found "
2976 fi
2977
2978 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2979     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2980     enable sdl &&
2981     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2982 fi
2983
2984 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2985
2986 check_header linux/fb.h
2987 check_header linux/videodev2.h
2988 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
2989
2990 check_header sys/videoio.h
2991
2992 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2993 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2994 # w32api 3.12 had it defined wrong
2995 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2996
2997 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2998 { check_header dev/bktr/ioctl_meteor.h &&
2999   check_header dev/bktr/ioctl_bt848.h; } ||
3000 { check_header machine/ioctl_meteor.h &&
3001   check_header machine/ioctl_bt848.h; } ||
3002 { check_header dev/video/meteor/ioctl_meteor.h &&
3003   check_header dev/video/bktr/ioctl_bt848.h; } ||
3004 check_header dev/ic/bt8xx.h
3005
3006 check_header sndio.h
3007 check_header sys/soundcard.h
3008 check_header soundcard.h
3009
3010 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3011
3012 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
3013
3014 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3015
3016 enabled libcdio &&
3017     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3018
3019 enabled x11grab                         &&
3020 check_header X11/Xlib.h                 &&
3021 check_header X11/extensions/XShm.h      &&
3022 check_header X11/extensions/Xfixes.h    &&
3023 check_func XOpenDisplay -lX11           &&
3024 check_func XShmCreateImage -lX11 -lXext &&
3025 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3026
3027 # check for VDA header
3028 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3029     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3030 fi
3031
3032 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3033 check_cpp_condition \
3034     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3035     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3036       disable vdpau; }
3037 fi
3038
3039 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3040
3041 # add some useful compiler flags if supported
3042 check_cflags -Wdeclaration-after-statement
3043 check_cflags -Wall
3044 check_cflags -Wno-parentheses
3045 check_cflags -Wno-switch
3046 check_cflags -Wno-format-zero-length
3047 check_cflags -Wdisabled-optimization
3048 check_cflags -Wpointer-arith
3049 check_cflags -Wredundant-decls
3050 check_cflags -Wno-pointer-sign
3051 check_cflags -Wcast-qual
3052 check_cflags -Wwrite-strings
3053 check_cflags -Wtype-limits
3054 check_cflags -Wundef
3055 check_cflags -Wmissing-prototypes
3056 check_cflags -Wstrict-prototypes
3057 enabled extra_warnings && check_cflags -Winline
3058
3059 # add some linker flags
3060 check_ldflags -Wl,--warn-common
3061 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3062 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3063
3064 enabled xmm_clobber_test &&                             \
3065     check_ldflags -Wl,--wrap,avcodec_open2              \
3066                   -Wl,--wrap,avcodec_decode_audio4      \
3067                   -Wl,--wrap,avcodec_decode_video2      \
3068                   -Wl,--wrap,avcodec_decode_subtitle2   \
3069                   -Wl,--wrap,avcodec_encode_audio2      \
3070                   -Wl,--wrap,avcodec_encode_video       \
3071                   -Wl,--wrap,avcodec_encode_subtitle    \
3072                   -Wl,--wrap,sws_scale ||               \
3073     disable xmm_clobber_test
3074
3075 echo "X{};" > $TMPV
3076 if test_ldflags -Wl,--version-script,$TMPV; then
3077     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3078     check_cc <<EOF && enable symver_asm_label
3079 void ff_foo(void) __asm__ ("av_foo@VERSION");
3080 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3081 EOF
3082     check_cc <<EOF && enable symver_gnu_asm
3083 __asm__(".symver ff_foo,av_foo@VERSION");
3084 void ff_foo(void) {}
3085 EOF
3086 fi
3087
3088 if [ -n "$optflags" ]; then
3089     add_cflags $optflags
3090 elif enabled small; then
3091     add_cflags $size_cflags
3092 elif enabled optimizations; then
3093     add_cflags $speed_cflags
3094 else
3095     add_cflags $noopt_cflags
3096 fi
3097 check_cflags -fno-math-errno
3098 check_cflags -fno-signed-zeros
3099
3100 if enabled icc; then
3101     # Just warnings, no remarks
3102     check_cflags -w1
3103     # -wd: Disable following warnings
3104     # 144, 167, 556: -Wno-pointer-sign
3105     # 1292: attribute "foo" ignored
3106     # 10006: ignoring unknown option -fno-signed-zeros
3107     # 10148: ignoring unknown option -Wno-parentheses
3108     # 10156: ignoring option '-W'; no argument required
3109     check_cflags -wd144,167,556,1292,10006,10148,10156
3110     # 11030: Warning unknown option --as-needed
3111     # 10156: ignoring option '-export'; no argument required
3112     check_ldflags -wd10156,11030
3113     # Allow to compile with optimizations
3114     check_ldflags -march=$cpu
3115     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3116     enable ebp_available
3117     if enabled x86_32; then
3118         test ${icc_version%%.*} -ge 11 && \
3119             check_cflags -falign-stack=maintain-16-byte || \
3120             disable aligned_stack
3121     fi
3122 elif enabled ccc; then
3123     # disable some annoying warnings
3124     add_cflags -msg_disable cvtu32to64
3125     add_cflags -msg_disable embedcomment
3126     add_cflags -msg_disable needconstext
3127     add_cflags -msg_disable nomainieee
3128     add_cflags -msg_disable ptrmismatch1
3129     add_cflags -msg_disable unreachcode
3130 elif enabled gcc; then
3131     check_cflags -fno-tree-vectorize
3132     check_cflags -Werror=implicit-function-declaration
3133     check_cflags -Werror=missing-prototypes
3134     check_cflags -Werror=declaration-after-statement
3135 elif enabled llvm_gcc; then
3136     check_cflags -mllvm -stack-alignment=16
3137 elif enabled clang; then
3138     check_cflags -mllvm -stack-alignment=16
3139     check_cflags -Qunused-arguments
3140 elif enabled armcc; then
3141     # 2523: use of inline assembler is deprecated
3142     add_cflags -W${armcc_opt},--diag_suppress=2523
3143     add_cflags -W${armcc_opt},--diag_suppress=1207
3144     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3145     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3146     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3147     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3148 elif enabled tms470; then
3149     add_cflags -pds=824 -pds=837
3150 elif enabled pathscale; then
3151     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3152 fi
3153
3154 enabled_any $THREADS_LIST      && enable threads
3155
3156 check_deps $CONFIG_LIST       \
3157            $CONFIG_EXTRA      \
3158            $HAVE_LIST         \
3159            $ALL_COMPONENTS    \
3160            $ALL_TESTS         \
3161
3162 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3163
3164 ! enabled_any memalign posix_memalign malloc_aligned &&
3165     enabled_any $need_memalign && enable memalign_hack
3166
3167 echo "install prefix            $prefix"
3168 echo "source path               $source_path"
3169 echo "C compiler                $cc"
3170 echo "ARCH                      $arch ($cpu)"
3171 if test "$build_suffix" != ""; then
3172     echo "build suffix              $build_suffix"
3173 fi
3174 if test "$extra_version" != ""; then
3175     echo "version string suffix     $extra_version"
3176 fi
3177 echo "big-endian                ${bigendian-no}"
3178 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3179 if enabled x86; then
3180     echo "${yasmexe}                      ${yasm-no}"
3181     echo "MMX enabled               ${mmx-no}"
3182     echo "MMX2 enabled              ${mmx2-no}"
3183     echo "3DNow! enabled            ${amd3dnow-no}"
3184     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3185     echo "SSE enabled               ${sse-no}"
3186     echo "SSSE3 enabled             ${ssse3-no}"
3187     echo "AVX enabled               ${avx-no}"
3188     echo "CMOV enabled              ${cmov-no}"
3189     echo "CMOV is fast              ${fast_cmov-no}"
3190     echo "EBX available             ${ebx_available-no}"
3191     echo "EBP available             ${ebp_available-no}"
3192 fi
3193 if enabled arm; then
3194     echo "ARMv5TE enabled           ${armv5te-no}"
3195     echo "ARMv6 enabled             ${armv6-no}"
3196     echo "ARMv6T2 enabled           ${armv6t2-no}"
3197     echo "ARM VFP enabled           ${armvfp-no}"
3198     echo "NEON enabled              ${neon-no}"
3199 fi
3200 if enabled mips; then
3201     echo "MMI enabled               ${mmi-no}"
3202 fi
3203 if enabled ppc; then
3204     echo "AltiVec enabled           ${altivec-no}"
3205     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3206     echo "dcbzl available           ${dcbzl-no}"
3207 fi
3208 if enabled sparc; then
3209     echo "VIS enabled               ${vis-no}"
3210 fi
3211 echo "debug symbols             ${debug-no}"
3212 echo "optimize for size         ${small-no}"
3213 echo "optimizations             ${optimizations-no}"
3214 echo "static                    ${static-no}"
3215 echo "shared                    ${shared-no}"
3216 echo "new filter support        ${avfilter-no}"
3217 echo "network support           ${network-no}"
3218 echo "threading support         ${thread_type-no}"
3219 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3220 echo "SDL support               ${sdl-no}"
3221 echo "libdxva2 enabled          ${dxva2-no}"
3222 echo "libva enabled             ${vaapi-no}"
3223 echo "libvdpau enabled          ${vdpau-no}"
3224 echo "AVISynth enabled          ${avisynth-no}"
3225 echo "frei0r enabled            ${frei0r-no}"
3226 echo "gnutls enabled            ${gnutls-no}"
3227 echo "libcdio support           ${libcdio-no}"
3228 echo "libdc1394 support         ${libdc1394-no}"
3229 echo "libdirac enabled          ${libdirac-no}"
3230 echo "libfaac enabled           ${libfaac-no}"
3231 echo "libgsm enabled            ${libgsm-no}"
3232 echo "libmp3lame enabled        ${libmp3lame-no}"
3233 echo "libnut enabled            ${libnut-no}"
3234 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3235 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3236 echo "libopencv support         ${libopencv-no}"
3237 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3238 echo "libpulse enabled          ${libpulse-no}"
3239 echo "librtmp enabled           ${librtmp-no}"
3240 echo "libschroedinger enabled   ${libschroedinger-no}"
3241 echo "libspeex enabled          ${libspeex-no}"
3242 echo "libtheora enabled         ${libtheora-no}"
3243 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3244 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3245 echo "libvorbis enabled         ${libvorbis-no}"
3246 echo "libvpx enabled            ${libvpx-no}"
3247 echo "libx264 enabled           ${libx264-no}"
3248 echo "libxavs enabled           ${libxavs-no}"
3249 echo "libxvid enabled           ${libxvid-no}"
3250 echo "openssl enabled           ${openssl-no}"
3251 echo "zlib enabled              ${zlib-no}"
3252 echo "bzlib enabled             ${bzlib-no}"
3253 echo
3254
3255 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3256     echo "Enabled ${type}s:"
3257     eval list=\$$(toupper $type)_LIST
3258     print_enabled '_*' $list | sort | pr -r -3 -t
3259     echo
3260 done
3261
3262 license="LGPL version 2.1 or later"
3263 if enabled nonfree; then
3264     license="nonfree and unredistributable"
3265 elif enabled gplv3; then
3266     license="GPL version 3 or later"
3267 elif enabled lgplv3; then
3268     license="LGPL version 3 or later"
3269 elif enabled gpl; then
3270     license="GPL version 2 or later"
3271 fi
3272
3273 echo "License: $license"
3274
3275 echo "Creating config.mak and config.h..."
3276
3277 test -e Makefile || $ln_s "$source_path/Makefile" .
3278
3279 config_files="$TMPH config.mak"
3280
3281 cat > config.mak <<EOF
3282 # Automatically generated by configure - do not modify!
3283 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3284 prefix=$prefix
3285 LIBDIR=\$(DESTDIR)$libdir
3286 SHLIBDIR=\$(DESTDIR)$shlibdir
3287 INCDIR=\$(DESTDIR)$incdir
3288 BINDIR=\$(DESTDIR)$bindir
3289 DATADIR=\$(DESTDIR)$datadir
3290 MANDIR=\$(DESTDIR)$mandir
3291 SRC_PATH=$source_path
3292 CC_IDENT=$cc_ident
3293 ARCH=$arch
3294 CC=$cc
3295 AS=$as
3296 LD=$ld
3297 DEPCC=$dep_cc
3298 YASM=$yasmexe
3299 YASMDEP=$yasmexe
3300 AR=$ar
3301 RANLIB=$ranlib
3302 LN_S=$ln_s
3303 CPPFLAGS=$CPPFLAGS
3304 CFLAGS=$CFLAGS
3305 ASFLAGS=$ASFLAGS
3306 AS_O=$CC_O
3307 CC_O=$CC_O
3308 DLLTOOL=$dlltool
3309 LDFLAGS=$LDFLAGS
3310 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3311 SHFLAGS=$SHFLAGS
3312 YASMFLAGS=$YASMFLAGS
3313 BUILDSUF=$build_suffix
3314 FULLNAME=$FULLNAME
3315 LIBPREF=$LIBPREF
3316 LIBSUF=$LIBSUF
3317 LIBNAME=$LIBNAME
3318 SLIBPREF=$SLIBPREF
3319 SLIBSUF=$SLIBSUF
3320 EXESUF=$EXESUF
3321 EXTRA_VERSION=$extra_version
3322 DEPFLAGS=$DEPFLAGS
3323 CCDEP=$CCDEP
3324 ASDEP=$ASDEP
3325 CC_DEPFLAGS=$CC_DEPFLAGS
3326 AS_DEPFLAGS=$AS_DEPFLAGS
3327 HOSTCC=$host_cc
3328 HOSTCFLAGS=$host_cflags
3329 HOSTEXESUF=$HOSTEXESUF
3330 HOSTLDFLAGS=$host_ldflags
3331 HOSTLIBS=$host_libs
3332 TARGET_EXEC=$target_exec
3333 TARGET_PATH=$target_path
3334 SDL_LIBS=$sdl_libs
3335 SDL_CFLAGS=$sdl_cflags
3336 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3337 EXTRALIBS=$extralibs
3338 INSTALL=install
3339 LIBTARGET=${LIBTARGET}
3340 SLIBNAME=${SLIBNAME}
3341 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3342 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3343 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3344 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3345 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3346 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3347 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3348 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3349 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3350 EOF
3351
3352 get_version(){
3353     name=$1
3354     file=$source_path/$2
3355     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3356     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3357     lcname=$(tolower $name)
3358     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3359     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3360 }
3361
3362 get_version LIBAVCODEC  libavcodec/version.h
3363 get_version LIBAVDEVICE libavdevice/avdevice.h
3364 get_version LIBAVFILTER libavfilter/version.h
3365 get_version LIBAVFORMAT libavformat/version.h
3366 get_version LIBAVUTIL   libavutil/avutil.h
3367 get_version LIBSWSCALE  libswscale/swscale.h
3368
3369 cat > $TMPH <<EOF
3370 /* Automatically generated by configure - do not modify! */
3371 #ifndef LIBAV_CONFIG_H
3372 #define LIBAV_CONFIG_H
3373 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3374 #define LIBAV_LICENSE "$(c_escape $license)"
3375 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3376 #define CC_TYPE "$cc_type"
3377 #define CC_VERSION $cc_version
3378 #define restrict $_restrict
3379 #define EXTERN_PREFIX "${extern_prefix}"
3380 #define EXTERN_ASM ${extern_prefix}
3381 #define SLIBSUF "$SLIBSUF"
3382 EOF
3383
3384 test -n "$malloc_prefix" &&
3385     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3386
3387 if enabled small || disabled optimizations; then
3388     echo "#undef  av_always_inline"  >> $TMPH
3389     if enabled small; then
3390         echo "#define av_always_inline inline"  >> $TMPH
3391     else
3392         echo "#define av_always_inline av_unused"  >> $TMPH
3393     fi
3394 fi
3395
3396 if enabled yasm; then
3397     append config_files $TMPASM
3398     printf '' >$TMPASM
3399 fi
3400
3401 print_config ARCH_   "$config_files" $ARCH_LIST
3402 print_config HAVE_   "$config_files" $HAVE_LIST
3403 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3404                                      $CONFIG_EXTRA      \
3405                                      $ALL_COMPONENTS    \
3406
3407 cat >>config.mak <<EOF
3408 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3409 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3410 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3411 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3412 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3413 EOF
3414
3415 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3416
3417 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3418 cp_if_changed $TMPH config.h
3419 touch .config
3420
3421 enabled yasm && cp_if_changed $TMPASM config.asm
3422
3423 cat > $TMPH <<EOF
3424 /* Generated by ffconf */
3425 #ifndef AVUTIL_AVCONFIG_H
3426 #define AVUTIL_AVCONFIG_H
3427 EOF
3428
3429 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3430
3431 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3432
3433 cp_if_changed $TMPH libavutil/avconfig.h
3434
3435 test -n "$WARNINGS" && printf "\n$WARNINGS"
3436
3437 # build pkg-config files
3438
3439 pkgconfig_generate(){
3440 name=$1
3441 shortname=${name#lib}${build_suffix}
3442 comment=$2
3443 version=$3
3444 libs=$4
3445 requires=$5
3446 enabled ${name#lib} || return 0
3447 mkdir -p $name
3448 cat <<EOF > $name/$name.pc
3449 prefix=$prefix
3450 exec_prefix=\${prefix}
3451 libdir=$libdir
3452 includedir=$incdir
3453
3454 Name: $name
3455 Description: $comment
3456 Version: $version
3457 Requires: $(enabled shared || echo $requires)
3458 Requires.private: $(enabled shared && echo $requires)
3459 Conflicts:
3460 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3461 Libs.private: $(enabled shared && echo $libs)
3462 Cflags: -I\${includedir}
3463 EOF
3464 cat <<EOF > $name/$name-uninstalled.pc
3465 prefix=
3466 exec_prefix=
3467 libdir=\${pcfiledir}
3468 includedir=${source_path}
3469
3470 Name: $name
3471 Description: $comment
3472 Version: $version
3473 Requires: $requires
3474 Conflicts:
3475 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3476 Cflags: -I\${includedir}
3477 EOF
3478 }
3479
3480 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3481 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3482 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3483 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3484 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3485 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"