threads: fix a potential race spotted by helgrind.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Help options:
63   --help                   print this message
64   --list-decoders          show all available decoders
65   --list-encoders          show all available encoders
66   --list-hwaccels          show all available hardware accelerators
67   --list-demuxers          show all available demuxers
68   --list-muxers            show all available muxers
69   --list-parsers           show all available parsers
70   --list-protocols         show all available protocols
71   --list-bsfs              show all available bitstream filters
72   --list-indevs            show all available input devices
73   --list-outdevs           show all available output devices
74   --list-filters           show all available filters
75
76 Standard options:
77   --logfile=FILE           log tests and output to FILE [config.log]
78   --disable-logging        do not log configure debug information
79   --prefix=PREFIX          install in PREFIX [$prefix]
80   --bindir=DIR             install binaries in DIR [PREFIX/bin]
81   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
82   --libdir=DIR             install libs in DIR [PREFIX/lib]
83   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
84   --incdir=DIR             install includes in DIR [PREFIX/include]
85   --mandir=DIR             install man page in DIR [PREFIX/share/man]
86
87 Licensing options:
88   --enable-gpl             allow use of GPL code, the resulting libs
89                            and binaries will be under GPL [no]
90   --enable-version3        upgrade (L)GPL to version 3 [no]
91   --enable-nonfree         allow use of nonfree code, the resulting libs
92                            and binaries will be unredistributable [no]
93
94 Configuration options:
95   --disable-static         do not build static libraries [no]
96   --enable-shared          build shared libraries [no]
97   --enable-small           optimize for size instead of speed
98   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
99   --enable-gray            enable full grayscale support (slower color)
100   --disable-swscale-alpha  disable alpha channel support in swscale
101
102 Component options:
103   --disable-doc            do not build documentation
104   --disable-ffmpeg         disable ffmpeg build
105   --disable-ffplay         disable ffplay build
106   --disable-ffprobe        disable ffprobe build
107   --disable-ffserver       disable ffserver build
108   --disable-avdevice       disable libavdevice build
109   --disable-avcodec        disable libavcodec build
110   --disable-avformat       disable libavformat build
111   --disable-swresample     disable libswresample build
112   --disable-swscale        disable libswscale build
113   --disable-postproc       disable libpostproc build
114   --disable-avfilter       disable libavfilter build
115   --enable-avresample      enable libavresample build [no]
116   --disable-pthreads       disable pthreads [auto]
117   --disable-w32threads     disable Win32 threads [auto]
118   --disable-os2threads     disable OS/2 threads [auto]
119   --enable-x11grab         enable X11 grabbing [no]
120   --disable-network        disable network support [no]
121   --disable-dct            disable DCT code
122   --disable-mdct           disable MDCT code
123   --disable-rdft           disable RDFT code
124   --disable-fft            disable FFT code
125   --enable-dxva2           enable DXVA2 code
126   --enable-vaapi           enable VAAPI code [autodetect]
127   --enable-vda             enable VDA code   [autodetect]
128   --enable-vdpau           enable VDPAU code [autodetect]
129
130 Individual component options:
131   --disable-everything     disable all components listed below
132   --disable-encoder=NAME   disable encoder NAME
133   --enable-encoder=NAME    enable encoder NAME
134   --disable-encoders       disable all encoders
135   --disable-decoder=NAME   disable decoder NAME
136   --enable-decoder=NAME    enable decoder NAME
137   --disable-decoders       disable all decoders
138   --disable-hwaccel=NAME   disable hwaccel NAME
139   --enable-hwaccel=NAME    enable hwaccel NAME
140   --disable-hwaccels       disable all hwaccels
141   --disable-muxer=NAME     disable muxer NAME
142   --enable-muxer=NAME      enable muxer NAME
143   --disable-muxers         disable all muxers
144   --disable-demuxer=NAME   disable demuxer NAME
145   --enable-demuxer=NAME    enable demuxer NAME
146   --disable-demuxers       disable all demuxers
147   --enable-parser=NAME     enable parser NAME
148   --disable-parser=NAME    disable parser NAME
149   --disable-parsers        disable all parsers
150   --enable-bsf=NAME        enable bitstream filter NAME
151   --disable-bsf=NAME       disable bitstream filter NAME
152   --disable-bsfs           disable all bitstream filters
153   --enable-protocol=NAME   enable protocol NAME
154   --disable-protocol=NAME  disable protocol NAME
155   --disable-protocols      disable all protocols
156   --enable-indev=NAME      enable input device NAME
157   --disable-indev=NAME     disable input device NAME
158   --disable-indevs         disable input devices
159   --enable-outdev=NAME     enable output device NAME
160   --disable-outdev=NAME    disable output device NAME
161   --disable-outdevs        disable output devices
162   --disable-devices        disable all devices
163   --enable-filter=NAME     enable filter NAME
164   --disable-filter=NAME    disable filter NAME
165   --disable-filters        disable all filters
166
167 External library support:
168   --enable-avisynth        enable reading of AVISynth script files [no]
169   --enable-bzlib           enable bzlib [autodetect]
170   --enable-fontconfig      enable fontconfig
171   --enable-frei0r          enable frei0r video filtering
172   --enable-gnutls          enable gnutls [no]
173   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
174   --enable-libass          enable libass subtitles rendering [no]
175   --enable-libbluray       enable BluRay reading using libbluray [no]
176   --enable-libcelt         enable CELT decoding via libcelt [no]
177   --enable-libcdio         enable audio CD grabbing with libcdio
178   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
179                            and libraw1394 [no]
180   --enable-libfaac         enable AAC encoding via libfaac [no]
181   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
182   --enable-libfreetype     enable libfreetype [no]
183   --enable-libgsm          enable GSM de/encoding via libgsm [no]
184   --enable-libiec61883     enable iec61883 via libiec61883 [no]
185   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
186   --enable-libmodplug      enable ModPlug via libmodplug [no]
187   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
188   --enable-libnut          enable NUT (de)muxing via libnut,
189                            native (de)muxer exists [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
198   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
201   --enable-libv4l2         enable libv4l2/v4l-utils [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
205                            native implementation exists [no]
206   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
207   --enable-libx264         enable H.264 encoding via x264 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openal          enable OpenAL 1.1 capture support [no]
212   --enable-openssl         enable openssl [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --nm=NM                  use nm tool NM [$nm_default]
224   --ar=AR                  use archive tool AR [$ar_default]
225   --as=AS                  use assembler AS [$as_default]
226   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
227   --cc=CC                  use C compiler CC [$cc_default]
228   --cxx=CXX                use C compiler CXX [$cxx_default]
229   --ld=LD                  use linker LD [$ld_default]
230   --host-cc=HOSTCC         use host C compiler HOSTCC
231   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
232   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
233   --host-libs=HLIBS        use libs HLIBS when linking for host
234   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
235   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
236   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
237   --extra-libs=ELIBS       add ELIBS [$ELIBS]
238   --extra-version=STRING   version string suffix []
239   --optflags               override optimization-related compiler flags
240   --build-suffix=SUFFIX    library name suffix []
241   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
242   --progs-suffix=SUFFIX    program name suffix []
243   --arch=ARCH              select architecture [$arch]
244   --cpu=CPU                select the minimum required CPU (affects
245                            instruction selection, may crash on older CPUs)
246   --enable-pic             build position-independent code
247   --enable-sram            allow use of on-chip SRAM
248   --disable-symver         disable symbol versioning
249   --disable-fastdiv        disable table-based division
250   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
251   --disable-safe-bitstream-reader
252                            disable buffer boundary checking in bitreaders
253                            (faster, but may crash)
254   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
255
256 Optimization options (experts only):
257   --disable-asm            disable all assembler optimizations
258   --disable-altivec        disable AltiVec optimizations
259   --disable-amd3dnow       disable 3DNow! optimizations
260   --disable-amd3dnowext    disable 3DNow! extended optimizations
261   --disable-mmx            disable MMX optimizations
262   --disable-mmx2           disable MMX2 optimizations
263   --disable-sse            disable SSE optimizations
264   --disable-ssse3          disable SSSE3 optimizations
265   --disable-avx            disable AVX optimizations
266   --disable-armv5te        disable armv5te optimizations
267   --disable-armv6          disable armv6 optimizations
268   --disable-armv6t2        disable armv6t2 optimizations
269   --disable-armvfp         disable ARM VFP optimizations
270   --disable-mmi            disable MMI optimizations
271   --disable-neon           disable NEON optimizations
272   --disable-vis            disable VIS optimizations
273   --disable-yasm           disable use of yasm assembler
274   --disable-mips32r2       disable MIPS32R2 optimizations
275   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
276   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
277   --disable-mipsfpu        disable floating point MIPS optimizations
278   --disable-fast-unaligned consider unaligned accesses slow
279   --postproc-version=V     build libpostproc version V.
280                            Where V can be '$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO' or 'current'. [$postproc_version_default]
281
282 Developer options (useful when working on FFmpeg itself):
283   --enable-coverage        build with test coverage instrumentation
284   --disable-debug          disable debugging symbols
285   --enable-debug=LEVEL     set the debug level [$debuglevel]
286   --disable-optimizations  disable compiler optimizations
287   --enable-extra-warnings  enable more compiler warnings
288   --disable-stripping      disable stripping of executables and shared libraries
289   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
290                            2 causes a slowdown at runtime.
291   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
292   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
293                            leaks and errors, using the specified valgrind binary.
294                            Cannot be combined with --target-exec
295   --samples=PATH           location of test samples for FATE, if not set use
296                            \$FATE_SAMPLES at make invocation time.
297   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
298                            should be used only for debugging purposes)
299   --enable-random          randomly enable/disable components
300   --disable-random
301   --enable-random=LIST     randomly enable/disable specific components or
302   --disable-random=LIST    component groups. LIST is a comma-separated list
303                            of NAME[:PROB] entries where NAME is a component
304                            (group) and PROB the probability associated with
305                            NAME (default 0.5).
306   --random-seed=VALUE      seed value for --enable/disable-random
307
308 NOTE: Object files are built at the place where configure is launched.
309 EOF
310   exit 0
311 }
312
313 quotes='""'
314
315 log(){
316     echo "$@" >> $logfile
317 }
318
319 log_file(){
320     log BEGIN $1
321     pr -n -t $1 >> $logfile
322     log END $1
323 }
324
325 echolog(){
326     log "$@"
327     echo "$@"
328 }
329
330 warn(){
331     log "WARNING: $*"
332     WARNINGS="${WARNINGS}WARNING: $*\n"
333 }
334
335 die(){
336     echolog "$@"
337     cat <<EOF
338
339 If you think configure made a mistake, make sure you are using the latest
340 version from Git.  If the latest version fails, report the problem to the
341 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
342 EOF
343     if disabled logging; then
344         cat <<EOF
345 Rerun configure with logging enabled (do not use --disable-logging), and
346 include the log this produces with your report.
347 EOF
348     else
349 cat <<EOF
350 Include the log file "$logfile" produced by configure as this will help
351 solving the problem.
352 EOF
353     fi
354     exit 1
355 }
356
357 # Avoid locale weirdness, besides we really just want to translate ASCII.
358 toupper(){
359     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
360 }
361
362 tolower(){
363     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
364 }
365
366 c_escape(){
367     echo "$*" | sed 's/["\\]/\\\0/g'
368 }
369
370 sh_quote(){
371     v=$(echo "$1" | sed "s/'/'\\\\''/g")
372     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
373     echo "$v"
374 }
375
376 cleanws(){
377     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
378 }
379
380 filter(){
381     pat=$1
382     shift
383     for v; do
384         eval "case $v in $pat) echo $v ;; esac"
385     done
386 }
387
388 filter_out(){
389     pat=$1
390     shift
391     for v; do
392         eval "case $v in $pat) ;; *) echo $v ;; esac"
393     done
394 }
395
396 map(){
397     m=$1
398     shift
399     for v; do eval $m; done
400 }
401
402 set_all(){
403     value=$1
404     shift
405     for var in $*; do
406         eval $var=$value
407     done
408 }
409
410 set_weak(){
411     value=$1
412     shift
413     for var; do
414         eval : \${$var:=$value}
415     done
416 }
417
418 set_safe(){
419     var=$1
420     shift
421     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
422 }
423
424 get_safe(){
425     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
426 }
427
428 pushvar(){
429     for var in $*; do
430         eval level=\${${var}_level:=0}
431         eval ${var}_${level}="\$$var"
432         eval ${var}_level=$(($level+1))
433     done
434 }
435
436 popvar(){
437     for var in $*; do
438         eval level=\${${var}_level:-0}
439         test $level = 0 && continue
440         eval level=$(($level-1))
441         eval $var="\${${var}_${level}}"
442         eval ${var}_level=$level
443         eval unset ${var}_${level}
444     done
445 }
446
447 enable(){
448     set_all yes $*
449 }
450
451 disable(){
452     set_all no $*
453 }
454
455 enable_weak(){
456     set_weak yes $*
457 }
458
459 disable_weak(){
460     set_weak no $*
461 }
462
463 enable_safe(){
464     for var; do
465         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
466     done
467 }
468
469 disable_safe(){
470     for var; do
471         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
472     done
473 }
474
475 do_enable_deep(){
476     for var; do
477         enabled $var && continue
478         eval sel="\$${var}_select"
479         eval sgs="\$${var}_suggest"
480         pushvar var sgs
481         enable_deep $sel
482         popvar sgs
483         enable_deep_weak $sgs
484         popvar var
485     done
486 }
487
488 enable_deep(){
489     do_enable_deep $*
490     enable $*
491 }
492
493 enable_deep_weak(){
494     do_enable_deep $*
495     enable_weak $*
496 }
497
498 enabled(){
499     test "${1#!}" = "$1" && op== || op=!=
500     eval test "x\$${1#!}" $op "xyes"
501 }
502
503 disabled(){
504     test "${1#!}" = "$1" && op== || op=!=
505     eval test "x\$${1#!}" $op "xno"
506 }
507
508 enabled_all(){
509     for opt; do
510         enabled $opt || return 1
511     done
512 }
513
514 disabled_all(){
515     for opt; do
516         disabled $opt || return 1
517     done
518 }
519
520 enabled_any(){
521     for opt; do
522         enabled $opt && return 0
523     done
524 }
525
526 disabled_any(){
527     for opt; do
528         disabled $opt && return 0
529     done
530     return 1
531 }
532
533 set_default(){
534     for opt; do
535         eval : \${$opt:=\$${opt}_default}
536     done
537 }
538
539 is_in(){
540     value=$1
541     shift
542     for var in $*; do
543         [ $var = $value ] && return 0
544     done
545     return 1
546 }
547
548 check_deps(){
549     for cfg; do
550         cfg="${cfg#!}"
551         enabled ${cfg}_checking && die "Circular dependency for $cfg."
552         disabled ${cfg}_checking && continue
553         enable ${cfg}_checking
554
555         eval dep_all="\$${cfg}_deps"
556         eval dep_any="\$${cfg}_deps_any"
557         eval dep_sel="\$${cfg}_select"
558         eval dep_sgs="\$${cfg}_suggest"
559         eval dep_ifa="\$${cfg}_if"
560         eval dep_ifn="\$${cfg}_if_any"
561
562         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
563         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
564         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
565
566         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
567         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
568         enabled_all  $dep_all || disable $cfg
569         enabled_any  $dep_any || disable $cfg
570         disabled_any $dep_sel && disable $cfg
571
572         if enabled $cfg; then
573             eval dep_extralibs="\$${cfg}_extralibs"
574             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
575             enable_deep $dep_sel
576             enable_deep_weak $dep_sgs
577         fi
578
579         disable ${cfg}_checking
580     done
581 }
582
583 print_config_h(){
584     enabled $1 && v=1 || v=0
585     echo "#define $2 $v"
586 }
587
588 print_config_mak(){
589     enabled $1 && v= || v=!
590     echo "$v$2=yes"
591 }
592
593 print_config_asm(){
594     enabled $1 && v=1 || v=0
595     echo "%define $2 $v"
596 }
597
598 print_config(){
599     pfx=$1
600     files=$2
601     shift 2
602     for cfg; do
603         ucname="$(toupper $cfg)"
604         for f in $files; do
605             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
606         done
607     done
608 }
609
610 print_enabled(){
611     test "$1" = -n && end=" " && shift || end="\n"
612     suf=$1
613     shift
614     for v; do
615         enabled $v && printf "%s$end" ${v%$suf};
616     done
617 }
618
619 append(){
620     var=$1
621     shift
622     eval "$var=\"\$$var $*\""
623 }
624
625 prepend(){
626     var=$1
627     shift
628     eval "$var=\"$* \$$var\""
629 }
630
631 add_cppflags(){
632     append CPPFLAGS $($filter_cppflags "$@")
633 }
634
635 add_cflags(){
636     append CFLAGS $($filter_cflags "$@")
637 }
638
639 add_cxxflags(){
640     append CXXFLAGS $($filter_cflags "$@")
641 }
642
643 add_asflags(){
644     append ASFLAGS $($filter_asflags "$@")
645 }
646
647 add_ldflags(){
648     append LDFLAGS "$@"
649 }
650
651 add_extralibs(){
652     prepend extralibs "$@"
653 }
654
655 check_cmd(){
656     log "$@"
657     "$@" >> $logfile 2>&1
658 }
659
660 check_cc(){
661     log check_cc "$@"
662     cat > $TMPC
663     log_file $TMPC
664     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
665 }
666
667 check_cxx(){
668     log check_cxx "$@"
669     cat > $TMPCPP
670     log_file $TMPCPP
671     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" -c -o $TMPO $TMPCPP
672 }
673
674 check_cpp(){
675     log check_cpp "$@"
676     cat > $TMPC
677     log_file $TMPC
678     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
679 }
680
681 check_as(){
682     log check_as "$@"
683     cat > $TMPC
684     log_file $TMPC
685     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
686 }
687
688 check_asm(){
689     log check_asm "$@"
690     name="$1"
691     code="$2"
692     shift 2
693     disable $name
694     check_as "$@" <<EOF && enable $name
695 void foo(void){ __asm__ volatile($code); }
696 EOF
697 }
698
699 check_yasm(){
700     log check_yasm "$@"
701     echo "$1" > $TMPS
702     log_file $TMPS
703     shift 1
704     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
705 }
706
707 check_ld(){
708     log check_ld "$@"
709     type=$1
710     shift 1
711     flags=''
712     libs=''
713     for f; do
714         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
715     done
716     check_$type $($filter_cflags $flags) || return
717     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
718 }
719
720 check_code(){
721     log check_code "$@"
722     check=$1
723     headers=$2
724     code=$3
725     shift 3
726     {
727         for hdr in $headers; do
728             echo "#include <$hdr>"
729         done
730         echo "int main(void) { $code; return 0; }"
731     } | check_$check "$@"
732 }
733
734 check_cppflags(){
735     log check_cppflags "$@"
736     set -- $($filter_cppflags "$@")
737     check_cc "$@" <<EOF && append CPPFLAGS "$@"
738 int x;
739 EOF
740 }
741
742 check_cflags(){
743     log check_cflags "$@"
744     set -- $($filter_cflags "$@")
745     check_cc "$@" <<EOF && append CFLAGS "$@"
746 int x;
747 EOF
748 }
749
750 check_cxxflags(){
751     log check_cxxflags "$@"
752     set -- $($filter_cflags "$@")
753     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
754 int x;
755 EOF
756 }
757
758 test_ldflags(){
759     log test_ldflags "$@"
760     check_ld "cc" "$@" <<EOF
761 int main(void){ return 0; }
762 EOF
763 }
764
765 check_ldflags(){
766     log check_ldflags "$@"
767     test_ldflags "$@" && add_ldflags "$@"
768 }
769
770 check_header(){
771     log check_header "$@"
772     header=$1
773     shift
774     disable_safe $header
775     check_cpp "$@" <<EOF && enable_safe $header
776 #include <$header>
777 int x;
778 EOF
779 }
780
781 check_func(){
782     log check_func "$@"
783     func=$1
784     shift
785     disable $func
786     check_ld "cc" "$@" <<EOF && enable $func
787 extern int $func();
788 int main(void){ $func(); }
789 EOF
790 }
791
792 check_mathfunc(){
793     log check_mathfunc "$@"
794     func=$1
795     shift
796     disable $func
797     check_ld "cc" "$@" <<EOF && enable $func
798 #include <math.h>
799 float foo(float f) { return $func(f); }
800 int main(void){ return (int) foo; }
801 EOF
802 }
803
804 check_func_headers(){
805     log check_func_headers "$@"
806     headers=$1
807     funcs=$2
808     shift 2
809     {
810         for hdr in $headers; do
811             echo "#include <$hdr>"
812         done
813         for func in $funcs; do
814             echo "long check_$func(void) { return (long) $func; }"
815         done
816         echo "int main(void) { return 0; }"
817     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
818 }
819
820 check_class_headers_cpp(){
821     log check_class_headers_cpp "$@"
822     headers=$1
823     classes=$2
824     shift 2
825     {
826         for hdr in $headers; do
827             echo "#include <$hdr>"
828         done
829         echo "int main(void) { "
830         i=1
831         for class in $classes; do
832             echo "$class obj$i;"
833             i=$(expr $i + 1)
834         done
835         echo "return 0; }"
836     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
837 }
838
839 check_cpp_condition(){
840     log check_cpp_condition "$@"
841     header=$1
842     condition=$2
843     shift 2
844     check_cpp $($filter_cppflags "$@") <<EOF
845 #include <$header>
846 #if !($condition)
847 #error "unsatisfied condition: $condition"
848 #endif
849 EOF
850 }
851
852 check_lib(){
853     log check_lib "$@"
854     header="$1"
855     func="$2"
856     shift 2
857     check_header $header && check_func $func "$@" && add_extralibs "$@"
858 }
859
860 check_lib2(){
861     log check_lib2 "$@"
862     headers="$1"
863     funcs="$2"
864     shift 2
865     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
866 }
867
868 check_lib_cpp(){
869     log check_lib_cpp "$@"
870     headers="$1"
871     classes="$2"
872     shift 2
873     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
874 }
875
876 check_pkg_config(){
877     log check_pkg_config "$@"
878     pkg="$1"
879     headers="$2"
880     funcs="$3"
881     shift 3
882     $pkg_config --exists $pkg 2>/dev/null || return
883     pkg_cflags=$($pkg_config --cflags $pkg)
884     pkg_libs=$($pkg_config --libs $pkg)
885     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
886         set_safe ${pkg}_cflags $pkg_cflags   &&
887         set_safe ${pkg}_libs   $pkg_libs
888 }
889
890 check_exec(){
891     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
892 }
893
894 check_exec_crash(){
895     code=$(cat)
896
897     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
898     # are safe but may not be available everywhere.  Thus we use
899     # raise(SIGTERM) instead.  The check is run in a subshell so we
900     # can redirect the "Terminated" message from the shell.  SIGBUS
901     # is not defined by standard C so it is used conditionally.
902
903     (check_exec "$@") >> $logfile 2>&1 <<EOF
904 #include <signal.h>
905 static void sighandler(int sig){
906     raise(SIGTERM);
907 }
908 int func(void){
909     $code
910 }
911 int (*func_ptr)(void) = func;
912 int main(void){
913     signal(SIGILL, sighandler);
914     signal(SIGFPE, sighandler);
915     signal(SIGSEGV, sighandler);
916 #ifdef SIGBUS
917     signal(SIGBUS, sighandler);
918 #endif
919     return func_ptr();
920 }
921 EOF
922 }
923
924 check_type(){
925     log check_type "$@"
926     headers=$1
927     type=$2
928     shift 2
929     disable_safe "$type"
930     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
931 }
932
933 check_struct(){
934     log check_type "$@"
935     headers=$1
936     struct=$2
937     member=$3
938     shift 3
939     disable_safe "${struct}_${member}"
940     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
941         enable_safe "${struct}_${member}"
942 }
943
944 require(){
945     name="$1"
946     header="$2"
947     func="$3"
948     shift 3
949     check_lib $header $func "$@" || die "ERROR: $name not found"
950 }
951
952 require2(){
953     name="$1"
954     headers="$2"
955     func="$3"
956     shift 3
957     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
958 }
959
960 require_cpp(){
961     name="$1"
962     headers="$2"
963     classes="$3"
964     shift 3
965     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
966 }
967
968 require_pkg_config(){
969     pkg="$1"
970     check_pkg_config "$@" || die "ERROR: $pkg not found"
971     add_cflags    $(get_safe ${pkg}_cflags)
972     add_extralibs $(get_safe ${pkg}_libs)
973 }
974
975 check_host_cc(){
976     log check_host_cc "$@"
977     cat > $TMPC
978     log_file $TMPC
979     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
980 }
981
982 check_host_cflags(){
983     log check_host_cflags "$@"
984     check_host_cc "$@" <<EOF && append host_cflags "$@"
985 int x;
986 EOF
987 }
988
989 apply(){
990     file=$1
991     shift
992     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
993 }
994
995 cp_if_changed(){
996     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
997     mkdir -p "$(dirname $2)"
998     cp -f "$1" "$2"
999 }
1000
1001 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1002 # system-dependent things.
1003
1004 COMPONENT_LIST="
1005     bsfs
1006     decoders
1007     demuxers
1008     encoders
1009     filters
1010     hwaccels
1011     indevs
1012     muxers
1013     outdevs
1014     parsers
1015     protocols
1016 "
1017
1018 PROGRAM_LIST="
1019     ffplay
1020     ffprobe
1021     ffserver
1022     ffmpeg
1023 "
1024
1025 CONFIG_LIST="
1026     $COMPONENT_LIST
1027     $PROGRAM_LIST
1028     ac3dsp
1029     avcodec
1030     avdevice
1031     avfilter
1032     avformat
1033     avresample
1034     avisynth
1035     bzlib
1036     crystalhd
1037     dct
1038     doc
1039     dwt
1040     dxva2
1041     fast_unaligned
1042     fastdiv
1043     fft
1044     fontconfig
1045     frei0r
1046     gnutls
1047     gpl
1048     gray
1049     hardcoded_tables
1050     libaacplus
1051     libass
1052     libbluray
1053     libcdio
1054     libcelt
1055     libdc1394
1056     libfaac
1057     libfdk_aac
1058     libfreetype
1059     libgsm
1060     libiec61883
1061     libilbc
1062     libmodplug
1063     libmp3lame
1064     libnut
1065     libopencore_amrnb
1066     libopencore_amrwb
1067     libopencv
1068     libopenjpeg
1069     libpulse
1070     librtmp
1071     libschroedinger
1072     libspeex
1073     libstagefright_h264
1074     libtheora
1075     libutvideo
1076     libv4l2
1077     libvo_aacenc
1078     libvo_amrwbenc
1079     libvorbis
1080     libvpx
1081     libx264
1082     libxavs
1083     libxvid
1084     lsp
1085     mdct
1086     memalign_hack
1087     memory_poisoning
1088     mpegaudiodsp
1089     network
1090     nonfree
1091     openal
1092     openssl
1093     pic
1094     postproc
1095     rdft
1096     rtpdec
1097     runtime_cpudetect
1098     safe_bitstream_reader
1099     shared
1100     sinewin
1101     small
1102     sram
1103     static
1104     swresample
1105     swscale
1106     swscale_alpha
1107     thumb
1108     vaapi
1109     vda
1110     vdpau
1111     version3
1112     xmm_clobber_test
1113     x11grab
1114     zlib
1115 "
1116
1117 THREADS_LIST='
1118     pthreads
1119     w32threads
1120     os2threads
1121 '
1122
1123 ARCH_LIST='
1124     alpha
1125     arm
1126     avr32
1127     avr32_ap
1128     avr32_uc
1129     bfin
1130     ia64
1131     m68k
1132     mips
1133     mips64
1134     parisc
1135     ppc
1136     ppc64
1137     s390
1138     sh4
1139     sparc
1140     sparc64
1141     tomi
1142     x86
1143     x86_32
1144     x86_64
1145 '
1146
1147 ARCH_EXT_LIST='
1148     altivec
1149     amd3dnow
1150     amd3dnowext
1151     armv5te
1152     armv6
1153     armv6t2
1154     armvfp
1155     avx
1156     mmi
1157     mmx
1158     mmx2
1159     neon
1160     ppc4xx
1161     sse
1162     ssse3
1163     vfpv3
1164     vis
1165     mipsfpu
1166     mips32r2
1167     mipsdspr1
1168     mipsdspr2
1169 '
1170
1171 HAVE_LIST_PUB='
1172     bigendian
1173     fast_unaligned
1174 '
1175
1176 HAVE_LIST="
1177     $ARCH_EXT_LIST
1178     $HAVE_LIST_PUB
1179     $THREADS_LIST
1180     aligned_malloc
1181     aligned_stack
1182     alsa_asoundlib_h
1183     altivec_h
1184     arpa_inet_h
1185     asm_mod_y
1186     asm_types_h
1187     attribute_may_alias
1188     attribute_packed
1189     cbrtf
1190     clock_gettime
1191     closesocket
1192     cmov
1193     cpuid
1194     dcbzl
1195     dev_bktr_ioctl_bt848_h
1196     dev_bktr_ioctl_meteor_h
1197     dev_ic_bt8xx_h
1198     dev_video_bktr_ioctl_bt848_h
1199     dev_video_meteor_ioctl_meteor_h
1200     dlfcn_h
1201     dlopen
1202     dos_paths
1203     dxva_h
1204     ebp_available
1205     ebx_available
1206     exp2
1207     exp2f
1208     fast_64bit
1209     fast_clz
1210     fast_cmov
1211     fcntl
1212     fork
1213     getaddrinfo
1214     gethrtime
1215     getopt
1216     GetProcessAffinityMask
1217     GetProcessMemoryInfo
1218     GetProcessTimes
1219     GetSystemTimeAsFileTime
1220     getrusage
1221     gettimeofday
1222     glob
1223     gnu_as
1224     ibm_asm
1225     inet_aton
1226     inline_asm
1227     isatty
1228     isinf
1229     isnan
1230     jack_port_get_latency_range
1231     kbhit
1232     ldbrx
1233     libdc1394_1
1234     libdc1394_2
1235     llrint
1236     llrintf
1237     local_aligned_16
1238     local_aligned_8
1239     localtime_r
1240     log2
1241     log2f
1242     loongson
1243     lrint
1244     lrintf
1245     lzo1x_999_compress
1246     machine_ioctl_bt848_h
1247     machine_ioctl_meteor_h
1248     makeinfo
1249     malloc_h
1250     MapViewOfFile
1251     memalign
1252     mkstemp
1253     mm_empty
1254     mmap
1255     nanosleep
1256     netinet_sctp_h
1257     PeekNamedPipe
1258     pod2man
1259     poll_h
1260     posix_memalign
1261     pthread_cancel
1262     rdtsc
1263     rint
1264     round
1265     roundf
1266     rweflags
1267     sched_getaffinity
1268     sdl
1269     sdl_video_size
1270     setmode
1271     setrlimit
1272     Sleep
1273     sndio_h
1274     socklen_t
1275     soundcard_h
1276     strerror_r
1277     strptime
1278     struct_addrinfo
1279     struct_group_source_req
1280     struct_ip_mreq_source
1281     struct_ipv6_mreq
1282     struct_pollfd
1283     struct_rusage_ru_maxrss
1284     struct_sockaddr_in6
1285     struct_sockaddr_sa_len
1286     struct_sockaddr_storage
1287     struct_v4l2_frmivalenum_discrete
1288     symver
1289     symver_asm_label
1290     symver_gnu_asm
1291     sysconf
1292     sysctl
1293     sys_mman_h
1294     sys_param_h
1295     sys_resource_h
1296     sys_select_h
1297     sys_soundcard_h
1298     sys_time_h
1299     sys_videoio_h
1300     termios_h
1301     texi2html
1302     threads
1303     trunc
1304     truncf
1305     unistd_h
1306     usleep
1307     vfp_args
1308     VirtualAlloc
1309     windows_h
1310     winsock2_h
1311     xform_asm
1312     xgetbv
1313     xmm_clobbers
1314     yasm
1315 "
1316
1317 # options emitted with CONFIG_ prefix but not available on command line
1318 CONFIG_EXTRA="
1319     aandct
1320     avutil
1321     golomb
1322     gplv3
1323     h264chroma
1324     h264dsp
1325     h264pred
1326     h264qpel
1327     huffman
1328     lgplv3
1329     lpc
1330     vp3dsp
1331 "
1332
1333 CMDLINE_SELECT="
1334     $ARCH_EXT_LIST
1335     $CONFIG_LIST
1336     $THREADS_LIST
1337     asm
1338     coverage
1339     cross_compile
1340     debug
1341     extra_warnings
1342     logging
1343     optimizations
1344     stripping
1345     symver
1346     yasm
1347 "
1348
1349 PATHS_LIST='
1350     bindir
1351     datadir
1352     incdir
1353     libdir
1354     mandir
1355     prefix
1356     shlibdir
1357 '
1358
1359 CMDLINE_SET="
1360     $PATHS_LIST
1361     ar
1362     arch
1363     as
1364     assert_level
1365     build_suffix
1366     cc
1367     cpu
1368     cross_prefix
1369     cxx
1370     dep_cc
1371     extra_version
1372     host_cc
1373     host_cflags
1374     host_ldflags
1375     host_libs
1376     host_os
1377     install
1378     ld
1379     logfile
1380     malloc_prefix
1381     nm
1382     optflags
1383     pkg_config
1384     postproc_version
1385     progs_suffix
1386     random_seed
1387     samples
1388     strip
1389     sysinclude
1390     sysroot
1391     target_exec
1392     target_os
1393     target_path
1394     valgrind
1395     yasmexe
1396 "
1397
1398 CMDLINE_APPEND="
1399     extra_cflags
1400     extra_cxxflags
1401 "
1402
1403 # code dependency declarations
1404
1405 # architecture extensions
1406
1407 armv5te_deps="arm"
1408 armv6_deps="arm"
1409 armv6t2_deps="arm"
1410 armvfp_deps="arm"
1411 neon_deps="arm"
1412 vfpv3_deps="armvfp"
1413
1414 mipsfpu_deps="mips"
1415 mips32r2_deps="mips"
1416 mipsdspr1_deps="mips"
1417 mipsdspr2_deps="mips"
1418 mmi_deps="mips"
1419
1420 altivec_deps="ppc"
1421 ppc4xx_deps="ppc"
1422
1423 vis_deps="sparc"
1424
1425 x86_64_suggest="cmov fast_cmov"
1426 amd3dnow_deps="mmx"
1427 amd3dnowext_deps="amd3dnow"
1428 mmx_deps="x86"
1429 mmx2_deps="mmx"
1430 sse_deps="mmx"
1431 ssse3_deps="sse"
1432 avx_deps="ssse3"
1433
1434 aligned_stack_if_any="ppc x86"
1435 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1436 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1437 fast_unaligned_if_any="armv6 ppc x86"
1438
1439 inline_asm_deps="!tms470"
1440 need_memalign="altivec neon sse"
1441
1442 symver_if_any="symver_asm_label symver_gnu_asm"
1443
1444 # subsystems
1445 dct_select="rdft"
1446 mdct_select="fft"
1447 rdft_select="fft"
1448 mpegaudiodsp_select="dct"
1449
1450 # decoders / encoders / hardware accelerators
1451 aac_decoder_select="mdct sinewin"
1452 aac_encoder_select="mdct sinewin"
1453 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1454 ac3_decoder_select="mdct ac3dsp ac3_parser"
1455 ac3_encoder_select="mdct ac3dsp"
1456 ac3_fixed_encoder_select="mdct ac3dsp"
1457 alac_encoder_select="lpc"
1458 amrnb_decoder_select="lsp"
1459 amrwb_decoder_select="lsp"
1460 amv_encoder_select="aandct"
1461 atrac1_decoder_select="mdct sinewin"
1462 atrac3_decoder_select="mdct"
1463 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1464 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1465 cavs_decoder_select="golomb"
1466 cook_decoder_select="mdct sinewin"
1467 cscd_decoder_suggest="zlib"
1468 dca_decoder_select="mdct"
1469 dirac_decoder_select="dwt golomb"
1470 dnxhd_encoder_select="aandct"
1471 dxa_decoder_select="zlib"
1472 eac3_decoder_select="ac3_decoder"
1473 eac3_encoder_select="mdct ac3dsp"
1474 eamad_decoder_select="aandct"
1475 eatgq_decoder_select="aandct"
1476 eatqi_decoder_select="aandct"
1477 exr_decoder_select="zlib"
1478 ffv1_decoder_select="golomb"
1479 flac_decoder_select="golomb"
1480 flac_encoder_select="golomb lpc"
1481 flashsv_decoder_select="zlib"
1482 flashsv_encoder_select="zlib"
1483 flashsv2_encoder_select="zlib"
1484 flashsv2_decoder_select="zlib"
1485 flv_decoder_select="h263_decoder"
1486 flv_encoder_select="h263_encoder"
1487 fraps_decoder_select="huffman"
1488 h261_encoder_select="aandct"
1489 h263_decoder_select="h263_parser"
1490 h263_encoder_select="aandct"
1491 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1492 h263i_decoder_select="h263_decoder"
1493 h263p_encoder_select="h263_encoder"
1494 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1495 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1496 h264_dxva2_hwaccel_deps="dxva2api_h"
1497 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1498 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1499 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1500 h264_vda_hwaccel_select="vda h264_decoder"
1501 h264_vdpau_decoder_select="vdpau h264_decoder"
1502 iac_decoder_select="fft mdct sinewin"
1503 imc_decoder_select="fft mdct sinewin"
1504 jpegls_decoder_select="golomb"
1505 jpegls_encoder_select="golomb"
1506 ljpeg_encoder_select="aandct"
1507 loco_decoder_select="golomb"
1508 mjpeg_encoder_select="aandct"
1509 mlp_decoder_select="mlp_parser"
1510 mp1_decoder_select="mpegaudiodsp"
1511 mp1float_decoder_select="mpegaudiodsp"
1512 mp2_decoder_select="mpegaudiodsp"
1513 mp2float_decoder_select="mpegaudiodsp"
1514 mp3_decoder_select="mpegaudiodsp"
1515 mp3adu_decoder_select="mpegaudiodsp"
1516 mp3adufloat_decoder_select="mpegaudiodsp"
1517 mp3float_decoder_select="mpegaudiodsp"
1518 mp3on4_decoder_select="mpegaudiodsp"
1519 mp3on4float_decoder_select="mpegaudiodsp"
1520 mpc7_decoder_select="mpegaudiodsp"
1521 mpc8_decoder_select="mpegaudiodsp"
1522 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1523 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1524 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1525 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1526 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1527 mpeg1video_encoder_select="aandct"
1528 mpeg2_crystalhd_decoder_select="crystalhd"
1529 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1530 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1531 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1532 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1533 mpeg2video_encoder_select="aandct"
1534 mpeg4_crystalhd_decoder_select="crystalhd"
1535 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1536 mpeg4_encoder_select="h263_encoder"
1537 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1538 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1539 msmpeg4_crystalhd_decoder_select="crystalhd"
1540 msmpeg4v1_decoder_select="h263_decoder"
1541 msmpeg4v1_encoder_select="h263_encoder"
1542 msmpeg4v2_decoder_select="h263_decoder"
1543 msmpeg4v2_encoder_select="h263_encoder"
1544 msmpeg4v3_decoder_select="h263_decoder"
1545 msmpeg4v3_encoder_select="h263_encoder"
1546 nellymoser_decoder_select="mdct sinewin"
1547 nellymoser_encoder_select="mdct sinewin"
1548 png_decoder_select="zlib"
1549 png_encoder_select="zlib"
1550 qcelp_decoder_select="lsp"
1551 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1552 ra_144_encoder_select="lpc"
1553 ralf_decoder_select="golomb"
1554 rv10_decoder_select="h263_decoder"
1555 rv10_encoder_select="h263_encoder"
1556 rv20_decoder_select="h263_decoder"
1557 rv20_encoder_select="h263_encoder"
1558 rv30_decoder_select="golomb h264chroma h264pred h264qpel"
1559 rv40_decoder_select="golomb h264chroma h264pred h264qpel"
1560 shorten_decoder_select="golomb"
1561 sipr_decoder_select="lsp"
1562 snow_decoder_select="dwt"
1563 snow_encoder_select="aandct dwt"
1564 sonic_decoder_select="golomb"
1565 sonic_encoder_select="golomb"
1566 sonic_ls_encoder_select="golomb"
1567 svq1_encoder_select="aandct"
1568 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel"
1569 svq3_decoder_suggest="zlib"
1570 theora_decoder_select="vp3_decoder"
1571 tiff_decoder_suggest="zlib"
1572 tiff_encoder_suggest="zlib"
1573 tscc_decoder_select="zlib"
1574 twinvq_decoder_select="mdct lsp sinewin"
1575 vc1_crystalhd_decoder_select="crystalhd"
1576 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1577 vc1_dxva2_hwaccel_deps="dxva2api_h"
1578 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1579 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1580 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1581 vc1image_decoder_select="vc1_decoder"
1582 vorbis_decoder_select="mdct"
1583 vorbis_encoder_select="mdct"
1584 vp3_decoder_select="vp3dsp"
1585 vp5_decoder_select="vp3dsp"
1586 vp6_decoder_select="huffman vp3dsp"
1587 vp6a_decoder_select="vp6_decoder"
1588 vp6f_decoder_select="vp6_decoder"
1589 vp8_decoder_select="h264pred h264qpel"
1590 wmapro_decoder_select="mdct sinewin"
1591 wmav1_decoder_select="mdct sinewin"
1592 wmav1_encoder_select="mdct sinewin"
1593 wmav2_decoder_select="mdct sinewin"
1594 wmav2_encoder_select="mdct sinewin"
1595 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1596 wmv1_decoder_select="h263_decoder"
1597 wmv1_encoder_select="h263_encoder"
1598 wmv2_decoder_select="h263_decoder"
1599 wmv2_encoder_select="h263_encoder"
1600 wmv3_decoder_select="vc1_decoder"
1601 wmv3_crystalhd_decoder_select="crystalhd"
1602 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1603 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1604 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1605 wmv3image_decoder_select="wmv3_decoder"
1606 zerocodec_decoder_select="zlib"
1607 zlib_decoder_select="zlib"
1608 zlib_encoder_select="zlib"
1609 zmbv_decoder_select="zlib"
1610 zmbv_encoder_select="zlib"
1611
1612 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1613 vaapi_deps="va_va_h"
1614 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1615 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1616
1617 # parsers
1618 h264_parser_select="golomb h264dsp h264pred"
1619
1620 # external libraries
1621 libaacplus_encoder_deps="libaacplus"
1622 libcelt_decoder_deps="libcelt"
1623 libfaac_encoder_deps="libfaac"
1624 libfdk_aac_encoder_deps="libfdk_aac"
1625 libgsm_decoder_deps="libgsm"
1626 libgsm_encoder_deps="libgsm"
1627 libgsm_ms_decoder_deps="libgsm"
1628 libgsm_ms_encoder_deps="libgsm"
1629 libilbc_decoder_deps="libilbc"
1630 libilbc_encoder_deps="libilbc"
1631 libmodplug_demuxer_deps="libmodplug"
1632 libmp3lame_encoder_deps="libmp3lame"
1633 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1634 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1635 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1636 libopenjpeg_decoder_deps="libopenjpeg"
1637 libopenjpeg_encoder_deps="libopenjpeg"
1638 libschroedinger_decoder_deps="libschroedinger"
1639 libschroedinger_encoder_deps="libschroedinger"
1640 libspeex_decoder_deps="libspeex"
1641 libspeex_encoder_deps="libspeex"
1642 libstagefright_h264_decoder_deps="libstagefright_h264"
1643 libtheora_encoder_deps="libtheora"
1644 libvo_aacenc_encoder_deps="libvo_aacenc"
1645 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1646 libvorbis_decoder_deps="libvorbis"
1647 libvorbis_encoder_deps="libvorbis"
1648 libvpx_decoder_deps="libvpx"
1649 libvpx_encoder_deps="libvpx"
1650 libx264_encoder_deps="libx264"
1651 libx264rgb_encoder_deps="libx264"
1652 libxavs_encoder_deps="libxavs"
1653 libxvid_encoder_deps="libxvid"
1654 libutvideo_decoder_deps="libutvideo"
1655 libutvideo_encoder_deps="libutvideo"
1656
1657 # demuxers / muxers
1658 ac3_demuxer_select="ac3_parser"
1659 asf_stream_muxer_select="asf_muxer"
1660 avisynth_demuxer_deps="avisynth"
1661 dirac_demuxer_select="dirac_parser"
1662 eac3_demuxer_select="ac3_parser"
1663 flac_demuxer_select="flac_parser"
1664 ipod_muxer_select="mov_muxer"
1665 libnut_demuxer_deps="libnut"
1666 libnut_muxer_deps="libnut"
1667 matroska_audio_muxer_select="matroska_muxer"
1668 matroska_demuxer_suggest="zlib bzlib"
1669 mov_demuxer_suggest="zlib"
1670 mp3_demuxer_select="mpegaudio_parser"
1671 mp4_muxer_select="mov_muxer"
1672 mpegts_muxer_select="adts_muxer latm_muxer"
1673 mpegtsraw_demuxer_select="mpegts_demuxer"
1674 mxf_d10_muxer_select="mxf_muxer"
1675 ogg_demuxer_select="golomb"
1676 psp_muxer_select="mov_muxer"
1677 rtp_demuxer_select="sdp_demuxer"
1678 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1679 rtsp_demuxer_select="http_protocol rtpdec"
1680 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1681 sap_demuxer_select="sdp_demuxer"
1682 sap_muxer_select="rtp_muxer rtp_protocol"
1683 sdp_demuxer_select="rtpdec"
1684 spdif_muxer_select="aac_parser"
1685 tg2_muxer_select="mov_muxer"
1686 tgp_muxer_select="mov_muxer"
1687 w64_demuxer_deps="wav_demuxer"
1688
1689 # indevs / outdevs
1690 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1691 alsa_outdev_deps="alsa_asoundlib_h"
1692 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1693 dshow_indev_deps="IBaseFilter"
1694 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1695 dv1394_indev_deps="dv1394 dv_demuxer"
1696 fbdev_indev_deps="linux_fb_h"
1697 iec61883_indev_deps="libiec61883"
1698 jack_indev_deps="jack_jack_h sem_timedwait"
1699 lavfi_indev_deps="avfilter"
1700 libcdio_indev_deps="libcdio"
1701 libdc1394_indev_deps="libdc1394"
1702 libv4l2_indev_deps="libv4l2"
1703 openal_indev_deps="openal"
1704 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1705 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1706 pulse_indev_deps="libpulse"
1707 sdl_outdev_deps="sdl"
1708 sndio_indev_deps="sndio_h"
1709 sndio_outdev_deps="sndio_h"
1710 v4l_indev_deps="linux_videodev_h"
1711 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1712 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1713 vfwcap_indev_extralibs="-lavicap32"
1714 x11_grab_device_indev_deps="x11grab"
1715
1716 # protocols
1717 bluray_protocol_deps="libbluray"
1718 ffrtmphttp_protocol_deps="!librtmp_protocol"
1719 ffrtmphttp_protocol_select="http_protocol"
1720 gopher_protocol_deps="network"
1721 httpproxy_protocol_deps="network"
1722 httpproxy_protocol_select="tcp_protocol"
1723 http_protocol_deps="network"
1724 http_protocol_select="tcp_protocol"
1725 https_protocol_select="tls_protocol"
1726 librtmp_protocol_deps="librtmp"
1727 librtmpe_protocol_deps="librtmp"
1728 librtmps_protocol_deps="librtmp"
1729 librtmpt_protocol_deps="librtmp"
1730 librtmpte_protocol_deps="librtmp"
1731 mmsh_protocol_select="http_protocol"
1732 mmst_protocol_deps="network"
1733 rtmp_protocol_deps="!librtmp_protocol"
1734 rtmp_protocol_select="tcp_protocol"
1735 rtmps_protocol_deps="!librtmp_protocol"
1736 rtmps_protocol_select="tls_protocol"
1737 rtmpt_protocol_deps="!librtmp_protocol"
1738 rtmpt_protocol_select="ffrtmphttp_protocol"
1739 rtmpts_protocol_deps="!librtmp_protocol"
1740 rtmpts_protocol_select="ffrtmphttp_protocol"
1741 rtp_protocol_select="udp_protocol"
1742 sctp_protocol_deps="network netinet_sctp_h"
1743 tcp_protocol_deps="network"
1744 tls_protocol_deps_any="openssl gnutls"
1745 tls_protocol_select="tcp_protocol"
1746 udp_protocol_deps="network"
1747
1748 # filters
1749 aconvert_filter_deps="swresample"
1750 amovie_filter_deps="avcodec avformat"
1751 aresample_filter_deps="swresample"
1752 ass_filter_deps="libass"
1753 asyncts_filter_deps="avresample"
1754 atempo_filter_deps="avcodec rdft"
1755 blackframe_filter_deps="gpl"
1756 boxblur_filter_deps="gpl"
1757 colormatrix_filter_deps="gpl"
1758 cropdetect_filter_deps="gpl"
1759 delogo_filter_deps="gpl"
1760 deshake_filter_deps="avcodec"
1761 drawtext_filter_deps="libfreetype"
1762 frei0r_filter_deps="frei0r dlopen"
1763 frei0r_filter_extralibs='$ldl'
1764 frei0r_src_filter_deps="frei0r dlopen"
1765 frei0r_src_filter_extralibs='$ldl'
1766 hqdn3d_filter_deps="gpl"
1767 movie_filter_deps="avcodec avformat"
1768 mp_filter_deps="gpl avcodec swscale postproc"
1769 mptestsrc_filter_deps="gpl"
1770 negate_filter_deps="lut_filter"
1771 resample_filter_deps="avresample"
1772 ocv_filter_deps="libopencv"
1773 pan_filter_deps="swresample"
1774 removelogo_filter_deps="avcodec avformat swscale"
1775 scale_filter_deps="swscale"
1776 select_filter_deps="avcodec"
1777 super2xsai_filter_deps="gpl"
1778 tinterlace_filter_deps="gpl"
1779 yadif_filter_deps="gpl"
1780
1781 # libraries
1782 avdevice_deps="avcodec avformat"
1783 avformat_deps="avcodec"
1784 postproc_deps="gpl"
1785
1786 # programs
1787 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
1788 ffmpeg_select="buffersink_filter format_filter aformat_filter
1789                setpts_filter null_filter anull_filter abuffersink_filter"
1790 ffplay_deps="avcodec avformat swscale swresample sdl"
1791 ffplay_select="buffersink_filter rdft"
1792 ffprobe_deps="avcodec avformat"
1793 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1794 ffserver_extralibs='$ldl'
1795
1796 doc_deps_any="texi2html makeinfo pod2man"
1797
1798 # tests
1799
1800 test_deps(){
1801     suf1=$1
1802     suf2=$2
1803     shift 2
1804     for v; do
1805         dep=${v%=*}
1806         tests=${v#*=}
1807         for name in ${tests}; do
1808             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1809         done
1810     done
1811 }
1812
1813 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1814
1815 test_deps _muxer _demuxer                                               \
1816     aiff                                                                \
1817     pcm_alaw=alaw                                                       \
1818     asf                                                                 \
1819     au                                                                  \
1820     avi                                                                 \
1821     dv=dv_fmt                                                           \
1822     ffm                                                                 \
1823     flv=flv_fmt                                                         \
1824     gxf                                                                 \
1825     matroska=mkv                                                        \
1826     mmf                                                                 \
1827     mov="mov ismv"                                                      \
1828     pcm_mulaw=mulaw                                                     \
1829     mxf="mxf mxf_d10"                                                   \
1830     nut                                                                 \
1831     ogg="ogg ogg_vp3"                                                   \
1832     rawvideo=pixfmt                                                     \
1833     rm                                                                  \
1834     swf                                                                 \
1835     mpegts=ts                                                           \
1836     voc                                                                 \
1837     wav                                                                 \
1838     yuv4mpegpipe=yuv4mpeg                                               \
1839
1840 colormatrix1_test_deps="colormatrix_filter"
1841 colormatrix2_test_deps="colormatrix_filter"
1842 flashsv2_test_deps="zlib"
1843 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1844 mpng_test_deps="zlib"
1845 pp_test_deps="mp_filter"
1846 pp2_test_deps="mp_filter"
1847 pp3_test_deps="mp_filter"
1848 pp4_test_deps="mp_filter"
1849 pp5_test_deps="mp_filter"
1850 pp6_test_deps="mp_filter"
1851 zlib_test_deps="zlib"
1852 zmbv_test_deps="zlib"
1853
1854 # default parameters
1855
1856 logfile="config.log"
1857
1858 # installation paths
1859 prefix_default="/usr/local"
1860 bindir_default='${prefix}/bin'
1861 datadir_default='${prefix}/share/ffmpeg'
1862 incdir_default='${prefix}/include'
1863 libdir_default='${prefix}/lib'
1864 mandir_default='${prefix}/share/man'
1865 shlibdir_default="$libdir_default"
1866 postproc_version_default="current"
1867
1868 # toolchain
1869 ar_default="ar"
1870 cc_default="gcc"
1871 cxx_default="g++"
1872 cc_version=\"unknown\"
1873 host_cc_default="gcc"
1874 install="install"
1875 ln_s="ln -sf"
1876 nm_default="nm"
1877 objformat="elf"
1878 pkg_config_default=pkg-config
1879 ranlib="ranlib"
1880 strip_default="strip"
1881 yasmexe_default="yasm"
1882
1883 nm_opts='-g'
1884 nogas=":"
1885
1886 # machine
1887 arch_default=$(uname -m)
1888 cpu="generic"
1889
1890 # OS
1891 target_os_default=$(tolower $(uname -s))
1892 host_os=$target_os_default
1893
1894 # alternative libpostproc version
1895 ALT_PP_VER_MAJOR=51
1896 ALT_PP_VER_MINOR=2
1897 ALT_PP_VER_MICRO=101
1898 ALT_PP_VER=$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO
1899
1900 # configurable options
1901 enable $PROGRAM_LIST
1902
1903 enable avcodec
1904 enable avdevice
1905 enable avfilter
1906 enable avformat
1907 enable avutil
1908 enable postproc
1909 enable stripping
1910 enable swresample
1911 enable swscale
1912
1913 enable asm
1914 enable debug
1915 enable doc
1916 enable fastdiv
1917 enable network
1918 enable optimizations
1919 enable safe_bitstream_reader
1920 enable static
1921 enable swscale_alpha
1922
1923 # build settings
1924 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1925 FFSERVERLDFLAGS=-Wl,-E
1926 LIBPREF="lib"
1927 LIBSUF=".a"
1928 FULLNAME='$(NAME)$(BUILDSUF)'
1929 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1930 SLIBPREF="lib"
1931 SLIBSUF=".so"
1932 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1933 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1934 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1935 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1936 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1937 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1938
1939 AS_O='-o $@'
1940 CC_O='-o $@'
1941 CXX_O='-o $@'
1942
1943 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
1944 host_libs='-lm'
1945
1946 target_path='$(CURDIR)'
1947
1948 # since the object filename is not given with the -MM flag, the compiler
1949 # is only able to print the basename, and we must add the path ourselves
1950 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1951 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1952
1953 # find source path
1954 if test -f configure; then
1955     source_path=.
1956 else
1957     source_path=$(cd $(dirname "$0"); pwd)
1958     echo "$source_path" | grep -q '[[:blank:]]' &&
1959         die "Out of tree builds are impossible with whitespace in source path."
1960     test -e "$source_path/config.h" &&
1961         die "Out of tree builds are impossible with config.h in source dir."
1962 fi
1963
1964 for v in "$@"; do
1965     r=${v#*=}
1966     l=${v%"$r"}
1967     r=$(sh_quote "$r")
1968     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1969 done
1970
1971 find_things(){
1972     thing=$1
1973     pattern=$2
1974     file=$source_path/$3
1975     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1976 }
1977
1978 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1979 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1980 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1981 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1982 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1983 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1984 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1985 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1986 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1987 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1988 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1989
1990 ALL_COMPONENTS="
1991     $BSF_LIST
1992     $DECODER_LIST
1993     $DEMUXER_LIST
1994     $ENCODER_LIST
1995     $FILTER_LIST
1996     $HWACCEL_LIST
1997     $INDEV_LIST
1998     $MUXER_LIST
1999     $OUTDEV_LIST
2000     $PARSER_LIST
2001     $PROTOCOL_LIST
2002 "
2003
2004 find_tests(){
2005     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
2006 }
2007
2008 LAVF_FATE_TESTS=$(find_tests lavf-fate)
2009 LAVF_TESTS=$(find_tests lavf)
2010 LAVFI_TESTS=$(find_tests lavfi)
2011 SEEK_TESTS=$(find_tests seek seek_)
2012
2013 ALL_TESTS="$LAVF_FATE_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
2014
2015 for n in $COMPONENT_LIST; do
2016     v=$(toupper ${n%s})_LIST
2017     eval enable \$$v
2018     eval ${n}_if_any="\$$v"
2019 done
2020
2021 enable $ARCH_EXT_LIST $ALL_TESTS
2022
2023 die_unknown(){
2024     echo "Unknown option \"$1\"."
2025     echo "See $0 --help for available options."
2026     exit 1
2027 }
2028
2029 show_list() {
2030     suffix=_$1
2031     shift
2032     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2033     exit 0
2034 }
2035
2036 rand_list(){
2037     IFS=', '
2038     set -- $*
2039     unset IFS
2040     for thing; do
2041         comp=${thing%:*}
2042         prob=${thing#$comp}
2043         prob=${prob#:}
2044         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2045         echo "prob ${prob:-0.5}"
2046         printf '%s\n' $comp
2047     done
2048 }
2049
2050 do_random(){
2051     action=$1
2052     shift
2053     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2054     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2055 }
2056
2057 for opt do
2058     optval="${opt#*=}"
2059     case "$opt" in
2060     --extra-ldflags=*) add_ldflags $optval
2061     ;;
2062     --extra-libs=*) add_extralibs $optval
2063     ;;
2064     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
2065     ;;
2066     --enable-debug=*) debuglevel="$optval"
2067     ;;
2068     --disable-everything)
2069     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2070     ;;
2071     --enable-random|--disable-random)
2072     action=${opt%%-random}
2073     do_random ${action#--} $COMPONENT_LIST
2074     ;;
2075     --enable-random=*|--disable-random=*)
2076     action=${opt%%-random=*}
2077     do_random ${action#--} $optval
2078     ;;
2079     --enable-*=*|--disable-*=*)
2080     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2081     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2082     eval list=\$$(toupper $thing)_LIST
2083     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2084     $action $(filter "$name" $list)
2085     ;;
2086     --enable-?*|--disable-?*)
2087     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2088     if is_in $option $COMPONENT_LIST; then
2089         test $action = disable && action=unset
2090         eval $action \$$(toupper ${option%s})_LIST
2091     elif is_in $option $CMDLINE_SELECT; then
2092         $action $option
2093     else
2094         die_unknown $opt
2095     fi
2096     ;;
2097     --list-*)
2098         NAME="${opt#--list-}"
2099         is_in $NAME $COMPONENT_LIST || die_unknown $opt
2100         NAME=${NAME%s}
2101         eval show_list $NAME \$$(toupper $NAME)_LIST
2102     ;;
2103     --help|-h) show_help
2104     ;;
2105     *)
2106     optname="${opt%%=*}"
2107     optname="${optname#--}"
2108     optname=$(echo "$optname" | sed 's/-/_/g')
2109     if is_in $optname $CMDLINE_SET; then
2110         eval $optname='$optval'
2111     elif is_in $optname $CMDLINE_APPEND; then
2112         append $optname "$optval"
2113     else
2114          die_unknown $opt
2115     fi
2116     ;;
2117     esac
2118 done
2119
2120 disabled logging && logfile=/dev/null
2121
2122 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2123 set >> $logfile
2124
2125 test -n "$cross_prefix" && enable cross_compile
2126
2127 if enabled cross_compile; then
2128     test -n "$arch" && test -n "$target_os" ||
2129         die "Must specify target arch and OS when cross-compiling"
2130 fi
2131
2132 set_default arch target_os postproc_version
2133
2134 # Check if we should build alternative libpostproc version instead of current
2135 if   test "$postproc_version" = $ALT_PP_VER; then
2136   LIBPOSTPROC_VERSION=$ALT_PP_VER
2137   LIBPOSTPROC_VERSION_MAJOR=$ALT_PP_VER_MAJOR
2138   LIBPOSTPROC_VERSION_MINOR=$ALT_PP_VER_MINOR
2139   LIBPOSTPROC_VERSION_MICRO=$ALT_PP_VER_MICRO
2140 elif test "$postproc_version" != current; then
2141   die "Invalid argument to --postproc-version. See --help output."
2142 fi
2143
2144 ar_default="${cross_prefix}${ar_default}"
2145 cc_default="${cross_prefix}${cc_default}"
2146 cxx_default="${cross_prefix}${cxx_default}"
2147 nm_default="${cross_prefix}${nm_default}"
2148 pkg_config_default="${cross_prefix}${pkg_config_default}"
2149 ranlib="${cross_prefix}${ranlib}"
2150 strip_default="${cross_prefix}${strip_default}"
2151
2152 sysinclude_default="${sysroot}/usr/include"
2153
2154 set_default cc cxx nm pkg_config strip sysinclude yasmexe
2155 enabled cross_compile || host_cc_default=$cc
2156 set_default host_cc
2157
2158 if ! $pkg_config --version >/dev/null 2>&1; then
2159     warn "$pkg_config not found, library detection may fail."
2160     pkg_config=false
2161 fi
2162
2163 exesuf() {
2164     case $1 in
2165         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2166     esac
2167 }
2168
2169 EXESUF=$(exesuf $target_os)
2170 HOSTEXESUF=$(exesuf $host_os)
2171
2172 # set temporary file name
2173 : ${TMPDIR:=$TEMPDIR}
2174 : ${TMPDIR:=$TMP}
2175 : ${TMPDIR:=/tmp}
2176
2177 if ! check_cmd mktemp -u XXXXXX; then
2178     # simple replacement for missing mktemp
2179     # NOT SAFE FOR GENERAL USE
2180     mktemp(){
2181         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2182     }
2183 fi
2184
2185 tmpfile(){
2186     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2187         (set -C; exec > $tmp) 2>/dev/null ||
2188         die "Unable to create temporary file in $TMPDIR."
2189     append TMPFILES $tmp
2190     eval $1=$tmp
2191 }
2192
2193 trap 'rm -f -- $TMPFILES' EXIT
2194
2195 tmpfile TMPASM .asm
2196 tmpfile TMPC   .c
2197 tmpfile TMPCPP .cpp
2198 tmpfile TMPE   $EXESUF
2199 tmpfile TMPH   .h
2200 tmpfile TMPO   .o
2201 tmpfile TMPS   .S
2202 tmpfile TMPSH  .sh
2203 tmpfile TMPV   .ver
2204
2205 unset -f mktemp
2206
2207 chmod +x $TMPE
2208
2209 # make sure we can execute files in $TMPDIR
2210 cat > $TMPSH 2>> $logfile <<EOF
2211 #! /bin/sh
2212 EOF
2213 chmod +x $TMPSH >> $logfile 2>&1
2214 if ! $TMPSH >> $logfile 2>&1; then
2215     cat <<EOF
2216 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2217 variable to another directory and make sure that it is not mounted noexec.
2218 EOF
2219     die "Sanity test failed."
2220 fi
2221
2222 filter_asflags=echo
2223 filter_cflags=echo
2224 filter_cppflags=echo
2225
2226 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2227     cc_type=llvm_gcc
2228     cc_version=__VERSION__
2229     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
2230     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
2231     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2232     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2233     speed_cflags='-O3'
2234     size_cflags='-Os'
2235 elif $cc -v 2>&1 | grep -qi ^gcc; then
2236     cc_type=gcc
2237     cc_version=__VERSION__
2238     gcc_version=$($cc --version | head -n1)
2239     gcc_basever=$($cc -dumpversion)
2240     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2241     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2242     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2243     if ! $cc -dumpversion | grep -q '^2\.'; then
2244         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2245         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2246     fi
2247     speed_cflags='-O3'
2248     size_cflags='-Os'
2249 elif $cc --version 2>/dev/null | grep -q Intel; then
2250     cc_type=icc
2251     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
2252     cc_ident=$($cc --version | head -n1)
2253     icc_version=$($cc -dumpversion)
2254     CC_DEPFLAGS='-MMD'
2255     AS_DEPFLAGS='-MMD'
2256     speed_cflags='-O3'
2257     size_cflags='-Os'
2258     noopt_cflags='-O1'
2259 elif $cc -v 2>&1 | grep -q xlc; then
2260     cc_type=xlc
2261     cc_version="AV_STRINGIFY(__IBMC__)"
2262     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
2263     speed_cflags='-O5'
2264     size_cflags='-O5 -qcompact'
2265 elif $cc -V 2>/dev/null | grep -q Compaq; then
2266     cc_type=ccc
2267     cc_version="AV_STRINGIFY(__DECC_VER)"
2268     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
2269     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
2270     debuglevel=3
2271     add_ldflags -Wl,-z,now # calls to libots crash without this
2272     speed_cflags='-fast'
2273     size_cflags='-O1'
2274 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2275     test -d "$sysroot" || die "No valid sysroot specified."
2276     cc_type=armcc
2277     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
2278     cc_ident=$($cc --vsn | head -n1)
2279     armcc_conf="$PWD/armcc.conf"
2280     $cc --arm_linux_configure                 \
2281         --arm_linux_config_file="$armcc_conf" \
2282         --configure_sysroot="$sysroot"        \
2283         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2284         die "Error creating armcc configuration file."
2285     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2286     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
2287     as_default="${cross_prefix}gcc"
2288     CC_DEPFLAGS='-MMD'
2289     AS_DEPFLAGS='-MMD'
2290     speed_cflags='-O3'
2291     size_cflags='-Os'
2292     filter_asflags="filter_out -W${armcc_opt}*"
2293 elif $cc -version 2>/dev/null | grep -q TMS470; then
2294     cc_type=tms470
2295     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2296     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2297     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2298     CC_O='-fr=$(@D)'
2299     as_default="${cross_prefix}gcc"
2300     ld_default="${cross_prefix}gcc"
2301     TMPO=$(basename $TMPC .c).o
2302     append TMPFILES $TMPO
2303     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2304     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2305     AS_DEPFLAGS='-MMD'
2306     speed_cflags='-O3 -mf=5'
2307     size_cflags='-O3 -mf=2'
2308     filter_cflags=tms470_flags
2309     tms470_flags(){
2310         for flag; do
2311             case $flag in
2312                 -march=*|-mcpu=*)
2313                     case "${flag#*=}" in
2314                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2315                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2316                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2317                         armv6*|arm11*)          echo -mv=6   ;;
2318                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2319                                                 echo -mv=5e  ;;
2320                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2321                     esac
2322                     ;;
2323                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2324                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2325                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2326                 -msoft-float)   echo --float_support=vfplib       ;;
2327                 -O[0-3]|-mf=*)  echo $flag                        ;;
2328                 -g)             echo -g -mn                       ;;
2329                 -pds=*)         echo $flag                        ;;
2330             esac
2331         done
2332     }
2333 elif $cc -v 2>&1 | grep -q clang; then
2334     cc_type=clang
2335     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2336         cc_version=__clang_version__ || cc_version=__VERSION__
2337     cc_ident=$($cc --version | head -n1)
2338     CC_DEPFLAGS='-MMD'
2339     AS_DEPFLAGS='-MMD'
2340     speed_cflags='-O3'
2341     size_cflags='-Os'
2342 elif $cc -V 2>&1 | grep -q Sun; then
2343     cc_type=suncc
2344     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2345     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2346     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2347     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2348     add_ldflags -xc99
2349     speed_cflags='-O5'
2350     size_cflags='-O5 -xspace'
2351     filter_cflags=suncc_flags
2352     suncc_flags(){
2353         for flag; do
2354             case $flag in
2355                 -march=*|-mcpu=*)
2356                     case "${flag#*=}" in
2357                         native)                   echo -xtarget=native       ;;
2358                         v9|niagara)               echo -xarch=sparc          ;;
2359                         ultrasparc)               echo -xarch=sparcvis       ;;
2360                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2361                         i586|pentium)             echo -xchip=pentium        ;;
2362                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2363                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2364                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2365                         pentium4*)          echo -xtarget=pentium4           ;;
2366                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2367                         *-sse3)             echo -xarch=sse3                 ;;
2368                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2369                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2370                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2371                         k8|opteron|athlon64|athlon-fx)
2372                                                   echo -xarch=sse2a          ;;
2373                         athlon*)                  echo -xarch=pentium_proa   ;;
2374                     esac
2375                     ;;
2376                 -std=c99)             echo -xc99              ;;
2377                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2378                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2379                 -W*,*)                echo $flag              ;;
2380                 -f*-*|-W*)                                    ;;
2381                 *)                    echo $flag              ;;
2382             esac
2383         done
2384     }
2385 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2386     cc_type=pathscale
2387     cc_version=__PATHSCALE__
2388     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2389     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2390     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2391     speed_cflags='-O2'
2392     size_cflags='-Os'
2393     filter_cflags='filter_out -Wdisabled-optimization'
2394 elif $cc -v 2>&1 | grep -q Open64; then
2395     cc_type=open64
2396     cc_version=__OPEN64__
2397     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2398     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2399     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2400     speed_cflags='-O2'
2401     size_cflags='-Os'
2402     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2403 elif $cc -V 2>&1 | grep -q Portland; then
2404     cc_type=pgi
2405     cc_version='AV_STRINGIFY(__PGIC__.__PGIC_MINOR__.__PGIC_PATCHLEVEL__)'
2406     cc_ident="PGI $($cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2407     opt_common='-alias=ansi -Mlre -Mpre'
2408     speed_cflags="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2409     size_cflags="-O2 -Munroll=c:1 $opt_common"
2410     noopt_cflags="-O1"
2411     filter_cflags=pgi_flags
2412     pgi_flags(){
2413         for flag; do
2414             case $flag in
2415                 -fomit-frame-pointer) echo -Mnoframe ;;
2416                 -g)                   echo -gopt ;;
2417                 *)                    echo $flag ;;
2418             esac
2419         done
2420     }
2421 fi
2422
2423 test -n "$cc_type" && enable $cc_type ||
2424     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2425
2426 : ${as_default:=$cc}
2427 : ${dep_cc_default:=$cc}
2428 : ${ld_default:=$cc}
2429 set_default ar as dep_cc ld
2430
2431 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2432 test -n "$CXX_DEPFLAGS" || CXXDEP=$DEPEND_CMD
2433 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2434
2435 add_cflags $extra_cflags
2436 add_cxxflags $extra_cxxflags
2437 add_asflags $extra_cflags
2438
2439 if test -n "$sysroot"; then
2440     case "$cc_type" in
2441         gcc|llvm_gcc|clang)
2442             add_cppflags --sysroot="$sysroot"
2443             add_ldflags --sysroot="$sysroot"
2444         ;;
2445         tms470)
2446             add_cppflags -I"$sysinclude"
2447             add_ldflags  --sysroot="$sysroot"
2448         ;;
2449     esac
2450 fi
2451
2452 if test "$cpu" = host; then
2453     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2454
2455     case "$cc_type" in
2456         gcc|llvm_gcc)
2457             check_native(){
2458                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2459                 sed -n "/cc1.*$1=/{
2460                             s/.*$1=\\([^ ]*\\).*/\\1/
2461                             p
2462                             q
2463                         }" $TMPE
2464             }
2465             cpu=$(check_native -march || check_native -mcpu)
2466         ;;
2467     esac
2468
2469     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2470 fi
2471
2472 # Deal with common $arch aliases
2473 case "$arch" in
2474     arm*|iPad*)
2475         arch="arm"
2476     ;;
2477     mips|mipsel|IP*)
2478         arch="mips"
2479     ;;
2480     mips64*)
2481         arch="mips"
2482         subarch="mips64"
2483     ;;
2484     parisc|hppa)
2485         arch="parisc"
2486     ;;
2487     parisc64|hppa64)
2488         arch="parisc"
2489         subarch="parisc64"
2490     ;;
2491     "Power Macintosh"|ppc|powerpc|ppc64|powerpc64)
2492         arch="ppc"
2493     ;;
2494     s390|s390x)
2495         arch="s390"
2496     ;;
2497     sh4|sh)
2498         arch="sh4"
2499     ;;
2500     sun4u|sparc64)
2501         arch="sparc"
2502         subarch="sparc64"
2503     ;;
2504     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2505         arch="x86"
2506     ;;
2507 esac
2508
2509 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2510 enable $arch
2511
2512 # Add processor-specific flags
2513 if test "$cpu" = generic; then
2514     : do nothing
2515 elif enabled ppc; then
2516
2517     case $(tolower $cpu) in
2518         601|ppc601|powerpc601)
2519             cpuflags="-mcpu=601"
2520             disable altivec
2521         ;;
2522         603*|ppc603*|powerpc603*)
2523             cpuflags="-mcpu=603"
2524             disable altivec
2525         ;;
2526         604*|ppc604*|powerpc604*)
2527             cpuflags="-mcpu=604"
2528             disable altivec
2529         ;;
2530         g3|75*|ppc75*|powerpc75*)
2531             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2532             disable altivec
2533         ;;
2534         g4|745*|ppc745*|powerpc745*)
2535             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2536         ;;
2537         74*|ppc74*|powerpc74*)
2538             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2539         ;;
2540         g5|970|ppc970|powerpc970)
2541             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2542         ;;
2543         power[3-7]*)
2544             cpuflags="-mcpu=$cpu -mpowerpc-gfxopt -mpowerpc64"
2545         ;;
2546         cell)
2547             cpuflags="-mcpu=cell"
2548             enable ldbrx
2549         ;;
2550         e500v2)
2551             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2552             disable altivec
2553         ;;
2554         e500)
2555             cpuflags="-mcpu=8540 -mhard-float"
2556             disable altivec
2557         ;;
2558     esac
2559
2560 elif enabled x86; then
2561
2562     case $cpu in
2563         i[345]86|pentium)
2564             cpuflags="-march=$cpu"
2565             disable mmx
2566         ;;
2567         # targets that do NOT support conditional mov (cmov)
2568         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2569             cpuflags="-march=$cpu"
2570             disable cmov
2571         ;;
2572         # targets that do support conditional mov (cmov)
2573         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2574             cpuflags="-march=$cpu"
2575             enable cmov
2576             enable fast_cmov
2577         ;;
2578         # targets that do support conditional mov but on which it's slow
2579         pentium4|pentium4m|prescott|nocona)
2580             cpuflags="-march=$cpu"
2581             enable cmov
2582             disable fast_cmov
2583         ;;
2584     esac
2585
2586 elif enabled sparc; then
2587
2588     case $cpu in
2589         niagara)
2590             cpuflags="-mcpu=$cpu"
2591             disable vis
2592         ;;
2593         sparc64)
2594             cpuflags="-mcpu=v9"
2595         ;;
2596     esac
2597
2598 elif enabled arm; then
2599
2600     case $cpu in
2601         armv*)
2602             cpuflags="-march=$cpu"
2603             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2604         ;;
2605         *)
2606             cpuflags="-mcpu=$cpu"
2607             case $cpu in
2608                 cortex-a*)                               subarch=armv7a  ;;
2609                 cortex-r*)                               subarch=armv7r  ;;
2610                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2611                 arm11*)                                  subarch=armv6   ;;
2612                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2613                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2614             esac
2615         ;;
2616     esac
2617
2618 elif enabled alpha; then
2619
2620     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2621
2622 elif enabled bfin; then
2623
2624     cpuflags="-mcpu=$cpu"
2625
2626 elif enabled mips; then
2627
2628     cpuflags="-march=$cpu"
2629
2630     case $cpu in
2631         24kc)
2632             disable mipsfpu
2633             disable mipsdspr1
2634             disable mipsdspr2
2635         ;;
2636         24kf*)
2637             disable mipsdspr1
2638             disable mipsdspr2
2639         ;;
2640         24kec|34kc|1004kc)
2641             disable mipsfpu
2642             disable mipsdspr2
2643         ;;
2644         24kef*|34kf*|1004kf*)
2645             disable mipsdspr2
2646         ;;
2647         74kc)
2648             disable mipsfpu
2649         ;;
2650     esac
2651
2652 elif enabled avr32; then
2653
2654     case $cpu in
2655         ap7[02]0[0-2])
2656             subarch="avr32_ap"
2657             cpuflags="-mpart=$cpu"
2658         ;;
2659         ap)
2660             subarch="avr32_ap"
2661             cpuflags="-march=$cpu"
2662         ;;
2663         uc3[ab]*)
2664             subarch="avr32_uc"
2665             cpuflags="-mcpu=$cpu"
2666         ;;
2667         uc)
2668             subarch="avr32_uc"
2669             cpuflags="-march=$cpu"
2670         ;;
2671     esac
2672
2673 fi
2674
2675 add_cflags $cpuflags
2676 add_asflags $cpuflags
2677
2678 # compiler sanity check
2679 check_exec <<EOF
2680 int main(void){ return 0; }
2681 EOF
2682 if test "$?" != 0; then
2683     echo "$cc is unable to create an executable file."
2684     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2685         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2686         echo "Only do this if you know what cross compiling means."
2687     fi
2688     die "C compiler test failed."
2689 fi
2690
2691 add_cppflags -D_ISOC99_SOURCE
2692 add_cxxflags -D__STDC_CONSTANT_MACROS
2693 check_cflags -std=c99
2694 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2695 #include <stdlib.h>
2696 EOF
2697 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2698 #include <stdlib.h>
2699 EOF
2700
2701 check_host_cflags -std=c99
2702 check_host_cflags -Wall
2703
2704 case "$arch" in
2705     alpha|ia64|mips|parisc|sparc)
2706         spic=$shared
2707     ;;
2708     x86)
2709         subarch="x86_32"
2710         check_code cc "" "int test[(int)sizeof(char*) - 7]" && subarch="x86_64"
2711         if test "$subarch" = "x86_64"; then
2712             spic=$shared
2713         fi
2714     ;;
2715     ppc)
2716         check_cc <<EOF && subarch="ppc64"
2717         int test[(int)sizeof(char*) - 7];
2718 EOF
2719     ;;
2720 esac
2721
2722 enable $subarch
2723 enabled spic && enable pic
2724
2725 # OS specific
2726 case $target_os in
2727     haiku)
2728         prefix_default="/boot/common"
2729         network_extralibs="-lnetwork"
2730         host_libs=
2731         ;;
2732     sunos)
2733         FFSERVERLDFLAGS=""
2734         SHFLAGS='-shared -Wl,-h,$$(@F)'
2735         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2736         network_extralibs="-lsocket -lnsl"
2737         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2738         # When using suncc to build, the Solaris linker will mark
2739         # an executable with each instruction set encountered by
2740         # the Solaris assembler.  As our libraries contain their own
2741         # guards for processor-specific code, instead suppress
2742         # generation of the HWCAPS ELF section on Solaris x86 only.
2743         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2744         nm_opts='-P -g'
2745         ;;
2746     netbsd)
2747         disable symver
2748         oss_indev_extralibs="-lossaudio"
2749         oss_outdev_extralibs="-lossaudio"
2750         ;;
2751     openbsd|bitrig)
2752         # On OpenBSD 4.5. the compiler does not use PIC unless
2753         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2754         # however the generated executable will not do anything
2755         # (simply quits with exit-code 1, no crash, no output).
2756         # Thus explicitly enable PIC here.
2757         enable pic
2758         disable symver
2759         SHFLAGS='-shared'
2760         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
2761         oss_indev_extralibs="-lossaudio"
2762         oss_outdev_extralibs="-lossaudio"
2763         ;;
2764     dragonfly)
2765         disable symver
2766         ;;
2767     freebsd)
2768         ;;
2769     bsd/os)
2770         add_extralibs -lpoll -lgnugetopt
2771         strip="strip -d"
2772         ;;
2773     darwin)
2774         gas="gas-preprocessor.pl $cc"
2775         enabled ppc && add_asflags -force_cpusubtype_ALL
2776         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2777         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2778         strip="${strip} -x"
2779         add_ldflags -Wl,-dynamic,-search_paths_first
2780         SLIBSUF=".dylib"
2781         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2782         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2783         FFSERVERLDFLAGS=-Wl,-bind_at_load
2784         objformat="macho"
2785         enabled x86_64 && objformat="macho64"
2786         enabled_any pic shared ||
2787             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2788         ;;
2789     mingw32*)
2790         if test $target_os = "mingw32ce"; then
2791             disable network
2792         else
2793             target_os=mingw32
2794         fi
2795         LIBTARGET=i386
2796         if enabled x86_64; then
2797             LIBTARGET=x64
2798         elif enabled arm; then
2799             LIBTARGET=arm-wince
2800         fi
2801         shlibdir_default="$bindir_default"
2802         SLIBPREF=""
2803         SLIBSUF=".dll"
2804         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2805         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2806         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
2807         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2808         SLIB_INSTALL_LINKS=
2809         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2810         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2811         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'
2812         objformat="win32"
2813         enable dos_paths
2814         check_cflags -fno-common
2815         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2816                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2817                 die "ERROR: MinGW runtime version must be >= 3.15."
2818         add_cppflags -U__STRICT_ANSI__
2819         ;;
2820     cygwin*)
2821         target_os=cygwin
2822         shlibdir_default="$bindir_default"
2823         SLIBPREF="cyg"
2824         SLIBSUF=".dll"
2825         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2826         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2827         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2828         objformat="win32"
2829         enable dos_paths
2830         check_cflags -fno-common
2831         add_cppflags -U__STRICT_ANSI__
2832         ;;
2833     *-dos|freedos|opendos)
2834         network_extralibs="-lsocket"
2835         objformat="coff"
2836         enable dos_paths
2837         add_cppflags -U__STRICT_ANSI__
2838         ;;
2839     linux)
2840         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2841         enable dv1394
2842         ;;
2843     irix*)
2844         target_os=irix
2845         ranlib="echo ignoring ranlib"
2846         ;;
2847     os/2*)
2848         strip="lxlite -CS"
2849         ln_s="cp -f"
2850         objformat="aout"
2851         add_cppflags -D_GNU_SOURCE
2852         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2853         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2854         FFSERVERLDFLAGS=""
2855         LIBSUF="_s.a"
2856         SLIBPREF=""
2857         SLIBSUF=".dll"
2858         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2859         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2860         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2861           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2862           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2863           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2864           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2865           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2866         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2867           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2868         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2869         enable dos_paths
2870         enable_weak os2threads
2871         ;;
2872     gnu/kfreebsd)
2873         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2874         ;;
2875     gnu)
2876         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2877         ;;
2878     qnx)
2879         add_cppflags -D_QNX_SOURCE
2880         network_extralibs="-lsocket"
2881         ;;
2882     symbian)
2883         SLIBSUF=".dll"
2884         enable dos_paths
2885         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2886         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2887         add_ldflags -Wl,--target1-abs,--no-undefined \
2888                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2889                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2890         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2891                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2892                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2893         ;;
2894     none)
2895         ;;
2896     *)
2897         die "Unknown OS '$target_os'."
2898         ;;
2899 esac
2900
2901 esc(){
2902     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
2903 }
2904
2905 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
2906
2907 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2908
2909 set_default $PATHS_LIST
2910
2911 # we need to build at least one lib type
2912 if ! enabled_any static shared; then
2913     cat <<EOF
2914 At least one library type must be built.
2915 Specify --enable-static to build the static libraries or --enable-shared to
2916 build the shared libraries as well. To only build the shared libraries specify
2917 --disable-static in addition to --enable-shared.
2918 EOF
2919     exit 1;
2920 fi
2921
2922 die_license_disabled() {
2923     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2924 }
2925
2926 die_license_disabled_gpl() {
2927     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
2928 }
2929
2930 die_license_disabled gpl libcdio
2931 die_license_disabled gpl libutvideo
2932 die_license_disabled gpl libx264
2933 die_license_disabled gpl libxavs
2934 die_license_disabled gpl libxvid
2935 die_license_disabled gpl x11grab
2936
2937 die_license_disabled nonfree libaacplus
2938 die_license_disabled nonfree libfaac
2939 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
2940 enabled gpl && die_license_disabled_gpl nonfree openssl
2941
2942 die_license_disabled version3 libopencore_amrnb
2943 die_license_disabled version3 libopencore_amrwb
2944 die_license_disabled version3 libvo_aacenc
2945 die_license_disabled version3 libvo_amrwbenc
2946
2947 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2948
2949 disabled optimizations || check_cflags -fomit-frame-pointer
2950
2951 enable_pic() {
2952     enable pic
2953     add_cppflags -DPIC
2954     add_cflags   -fPIC
2955     add_asflags  -fPIC
2956 }
2957
2958 enabled pic && enable_pic
2959
2960 check_cc <<EOF || die "Symbol mangling check failed."
2961 int ff_extern;
2962 EOF
2963 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2964 extern_prefix=${sym%%ff_extern*}
2965
2966 check_cc <<EOF && enable inline_asm
2967 void foo(void) { __asm__ volatile ("" ::); }
2968 EOF
2969
2970 _restrict=
2971 for restrict_keyword in restrict __restrict__ __restrict; do
2972     check_cc <<EOF && _restrict=$restrict_keyword && break
2973 void foo(char * $restrict_keyword p);
2974 EOF
2975 done
2976
2977 check_cc <<EOF && enable attribute_packed
2978 struct { int x; } __attribute__((packed)) x;
2979 EOF
2980
2981 check_cc <<EOF && enable attribute_may_alias
2982 union { int x; } __attribute__((may_alias)) x;
2983 EOF
2984
2985 check_cc <<EOF || die "endian test failed"
2986 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2987 EOF
2988 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2989
2990 if enabled alpha; then
2991
2992     check_cflags -mieee
2993
2994 elif enabled arm; then
2995
2996     enabled thumb && check_cflags -mthumb || check_cflags -marm
2997     nogas=die
2998
2999     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3000         enable vfp_args
3001     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3002         case "${cross_prefix:-$cc}" in
3003             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3004             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3005 __asm__ (".eabi_attribute 28, 1");
3006 int main(void) { return 0; }
3007 EOF
3008         esac
3009         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3010     fi
3011
3012     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
3013     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
3014     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
3015     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
3016     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
3017     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
3018
3019     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3020
3021     enabled_all armv6t2 shared !pic && enable_pic
3022
3023 elif enabled mips; then
3024
3025     check_asm loongson '"dmult.g $1, $2, $3"'
3026     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
3027     enabled mips32r2  && add_cflags "-mips32r2" &&
3028      check_asm mips32r2  '"rotr $t0, $t1, 1"'
3029     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3030      check_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3031     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3032      check_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3033     enabled mipsfpu   && add_cflags "-mhard-float" &&
3034      check_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3035
3036
3037 elif enabled ppc; then
3038
3039     enable local_aligned_8 local_aligned_16
3040
3041     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3042     check_asm ibm_asm   '"add 0, 0, 0"'
3043     check_asm ppc4xx    '"maclhw r10, r11, r12"'
3044     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3045
3046     # AltiVec flags: The FSF version of GCC differs from the Apple version
3047     if enabled altivec; then
3048         nogas=warn
3049         check_cflags -maltivec -mabi=altivec &&
3050         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3051         check_cflags -faltivec
3052
3053         # check if our compiler supports Motorola AltiVec C API
3054         check_cc <<EOF || disable altivec
3055 $inc_altivec_h
3056 int main(void) {
3057     vector signed int v1, v2, v3;
3058     v1 = vec_add(v2,v3);
3059     return 0;
3060 }
3061 EOF
3062
3063         # check if our compiler supports braces for vector declarations
3064         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
3065 $inc_altivec_h
3066 int main (void) { (vector int) {1}; return 0; }
3067 EOF
3068     fi
3069
3070 elif enabled sparc; then
3071
3072     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
3073         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
3074
3075 elif enabled x86; then
3076
3077     check_code ld immintrin.h "__xgetbv(0)" "cc" && enable xgetbv
3078     check_code ld intrin.h "int info[4]; __cpuid(info, 0)" "cc" && enable cpuid
3079     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3080     check_code ld intrin.h "unsigned int x = __readeflags()" "cc" && enable rweflags
3081
3082     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3083
3084     enable local_aligned_8 local_aligned_16
3085
3086     # check whether EBP is available on x86
3087     # As 'i' is stored on the stack, this program will crash
3088     # if the base pointer is used to access it because the
3089     # base pointer is cleared in the inline assembly code.
3090     check_exec_crash <<EOF && enable ebp_available
3091     volatile int i=0;
3092     __asm__ volatile (
3093         "xorl %%ebp, %%ebp"
3094     ::: "%ebp");
3095     return i;
3096 EOF
3097
3098     # check whether EBX is available on x86
3099     check_asm ebx_available '""::"b"(0)' &&
3100         check_asm ebx_available '"":::"%ebx"'
3101
3102     # check whether xmm clobbers are supported
3103     check_asm xmm_clobbers '"":::"%xmm0"'
3104
3105     # check whether binutils is new enough to compile SSSE3/MMX2
3106     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
3107     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
3108
3109     if ! disabled_any asm mmx yasm; then
3110         if check_cmd $yasmexe --version; then
3111             enabled x86_64 && yasm_extra="-m amd64"
3112             yasm_debug="-g dwarf2"
3113         elif check_cmd nasm -v; then
3114             yasmexe=nasm
3115             yasm_debug="-g -F dwarf"
3116             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3117         fi
3118
3119         YASMFLAGS="-f $objformat $yasm_extra"
3120         enabled pic               && append YASMFLAGS "-DPIC"
3121         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3122         case "$objformat" in
3123             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3124         esac
3125
3126         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3127             die "yasm not found, use --disable-yasm for a crippled build"
3128         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
3129     fi
3130
3131     case "$cpu" in
3132         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3133             disable fast_clz
3134         ;;
3135     esac
3136
3137 fi
3138
3139 if enabled asm; then
3140     as=${gas:=$as}
3141     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
3142         $nogas "GNU assembler not found, install gas-preprocessor"
3143 fi
3144
3145 check_ldflags -Wl,--as-needed
3146
3147 if check_func dlopen; then
3148     ldl=
3149 elif check_func dlopen -ldl; then
3150     ldl=-ldl
3151 fi
3152
3153 if enabled network; then
3154     check_type "sys/types.h sys/socket.h" socklen_t
3155     check_type netdb.h "struct addrinfo"
3156     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3157     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3158     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3159     check_type netinet/in.h "struct sockaddr_in6"
3160     check_type poll.h "struct pollfd"
3161     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3162     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3163     check_header netinet/sctp.h
3164     check_func getaddrinfo $network_extralibs
3165     # Prefer arpa/inet.h over winsock2
3166     if check_header arpa/inet.h ; then
3167         check_func closesocket
3168     elif check_header winsock2.h ; then
3169         check_func_headers winsock2.h closesocket -lws2 &&
3170             network_extralibs="-lws2" ||
3171         { check_func_headers winsock2.h closesocket -lws2_32 &&
3172             network_extralibs="-lws2_32"; }
3173         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3174         check_type ws2tcpip.h socklen_t
3175         check_type ws2tcpip.h "struct addrinfo"
3176         check_type ws2tcpip.h "struct group_source_req"
3177         check_type ws2tcpip.h "struct ip_mreq_source"
3178         check_type ws2tcpip.h "struct ipv6_mreq"
3179         check_type winsock2.h "struct pollfd"
3180         check_type ws2tcpip.h "struct sockaddr_in6"
3181         check_type ws2tcpip.h "struct sockaddr_storage"
3182         check_struct winsock2.h "struct sockaddr" sa_len
3183     else
3184         disable network
3185     fi
3186 fi
3187
3188 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3189 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3190
3191 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3192 check_func  fcntl
3193 check_func  fork
3194 check_func  gethrtime
3195 check_func  getopt
3196 check_func  getrusage
3197 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3198 check_func  gettimeofday
3199 check_func  inet_aton $network_extralibs
3200 check_func  isatty
3201 check_func  localtime_r
3202 check_func  ${malloc_prefix}memalign            && enable memalign
3203 check_func  mkstemp
3204 check_func  mmap
3205 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3206 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3207 check_func  setrlimit
3208 check_func  strerror_r
3209 check_func  strptime
3210 check_func  sched_getaffinity
3211 check_func  sysconf
3212 check_func  sysctl
3213 check_func  usleep
3214 check_func_headers conio.h kbhit
3215 check_func_headers windows.h PeekNamedPipe
3216 check_func_headers io.h setmode
3217 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3218 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3219 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3220 check_func_headers windows.h GetProcessAffinityMask
3221 check_func_headers windows.h GetProcessTimes
3222 check_func_headers windows.h GetSystemTimeAsFileTime
3223 check_func_headers windows.h MapViewOfFile
3224 check_func_headers windows.h Sleep
3225 check_func_headers windows.h VirtualAlloc
3226 check_func_headers glob.h glob
3227
3228 check_header dlfcn.h
3229 check_header dxva.h
3230 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3231 check_header libcrystalhd/libcrystalhd_if.h
3232 check_header malloc.h
3233 check_header poll.h
3234 check_header sys/mman.h
3235 check_header sys/param.h
3236 check_header sys/resource.h
3237 check_header sys/select.h
3238 check_header sys/time.h
3239 check_header termios.h
3240 check_header unistd.h
3241 check_header vdpau/vdpau.h
3242 check_header vdpau/vdpau_x11.h
3243 check_header windows.h
3244 check_header X11/extensions/XvMClib.h
3245 check_header asm/types.h
3246
3247 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3248 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3249
3250 # check for VDA header
3251 if ! disabled vda; then
3252     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3253         enable vda
3254         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3255     fi
3256 fi
3257
3258 if ! disabled w32threads && ! enabled pthreads; then
3259     check_func _beginthreadex && enable w32threads
3260 fi
3261
3262 # check for some common methods of building with pthread support
3263 # do this before the optional library checks as some of them require pthreads
3264 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3265     enable pthreads
3266     if check_func pthread_create; then
3267         :
3268     elif check_func pthread_create -pthread; then
3269         add_cflags -pthread
3270         add_extralibs -pthread
3271     elif check_func pthread_create -pthreads; then
3272         add_cflags -pthreads
3273         add_extralibs -pthreads
3274     elif check_func pthread_create -lpthreadGC2; then
3275         add_extralibs -lpthreadGC2
3276     elif ! check_lib pthread.h pthread_create -lpthread; then
3277         disable pthreads
3278     fi
3279 fi
3280
3281 for thread in $THREADS_LIST; do
3282     if enabled $thread; then
3283         test -n "$thread_type" &&
3284             die "ERROR: Only one thread type must be selected." ||
3285             thread_type="$thread"
3286     fi
3287 done
3288
3289 if enabled pthreads; then
3290   check_func pthread_cancel
3291 fi
3292
3293 check_lib math.h sin -lm && LIBM="-lm"
3294 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3295 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3296
3297 check_mathfunc cbrtf
3298 check_mathfunc exp2
3299 check_mathfunc exp2f
3300 check_mathfunc isinf
3301 check_mathfunc isnan
3302 check_mathfunc llrint
3303 check_mathfunc llrintf
3304 check_mathfunc log2
3305 check_mathfunc log2f
3306 check_mathfunc lrint
3307 check_mathfunc lrintf
3308 check_mathfunc rint
3309 check_mathfunc round
3310 check_mathfunc roundf
3311 check_mathfunc trunc
3312 check_mathfunc truncf
3313
3314 # these are off by default, so fail if requested and not available
3315 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3316 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3317 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3318 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3319 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3320 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3321 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3322 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3323 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3324                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3325                         die "ERROR: libcelt version must be >= 0.11.0."; }
3326 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3327 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3328 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3329 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3330 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3331 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3332 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3333 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3334 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3335 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3336 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3337 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3338 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3339 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3340 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3341 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3342 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3343     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3344     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3345 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3346 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3347 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3348 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3349 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3350 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3351 enabled libvpx     && {
3352     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3353                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3354     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3355                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3356 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3357                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3358                         die "ERROR: libx264 version must be >= 0.118."; }
3359 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3360 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3361 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3362                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3363                         die "ERROR: openal not found"; } &&
3364                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3365                         die "ERROR: openal version must be 1.1 or compatible"; }
3366 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3367                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3368                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3369                         die "ERROR: openssl not found"; }
3370
3371 # libdc1394 check
3372 if enabled libdc1394; then
3373     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3374         enable libdc1394_2; } ||
3375     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3376         enable libdc1394_1; } ||
3377     die "ERROR: No version of libdc1394 found "
3378 fi
3379
3380 SDL_CONFIG="${cross_prefix}sdl-config"
3381 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3382     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3383     enable sdl &&
3384     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3385 else
3386   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3387     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3388     sdl_libs=$("${SDL_CONFIG}" --libs)
3389     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3390     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3391     enable sdl &&
3392     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3393   fi
3394 fi
3395 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3396
3397 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3398 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3399 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3400
3401 check_header linux/fb.h
3402 check_header linux/videodev.h
3403 check_header linux/videodev2.h
3404 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3405
3406 check_header sys/videoio.h
3407
3408 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3409 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3410 # w32api 3.12 had it defined wrong
3411 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3412
3413 check_type "dshow.h" IBaseFilter
3414
3415 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3416 { check_header dev/bktr/ioctl_meteor.h &&
3417   check_header dev/bktr/ioctl_bt848.h; } ||
3418 { check_header machine/ioctl_meteor.h &&
3419   check_header machine/ioctl_bt848.h; } ||
3420 { check_header dev/video/meteor/ioctl_meteor.h &&
3421   check_header dev/video/bktr/ioctl_bt848.h; } ||
3422 check_header dev/ic/bt8xx.h
3423
3424 check_header sndio.h
3425 if check_struct sys/soundcard.h audio_buf_info bytes; then
3426     enable_safe sys/soundcard.h
3427 else
3428     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3429     #include <sys/soundcard.h>
3430     audio_buf_info abc;
3431 EOF
3432 fi
3433 check_header soundcard.h
3434
3435 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3436
3437 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3438     check_func jack_port_get_latency_range -ljack
3439
3440 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3441
3442 enabled libcdio &&
3443     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3444
3445 enabled x11grab                                           &&
3446 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3447 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3448 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3449
3450 if ! disabled vaapi; then
3451     check_lib va/va.h vaInitialize -lva && {
3452         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3453         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3454     } || disable vaapi
3455 fi
3456
3457 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3458 check_cpp_condition \
3459     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3460     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3461       disable vdpau; }
3462 fi
3463
3464 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3465 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3466 test -n "$valgrind" && target_exec="$valgrind --error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3467
3468 # add some useful compiler flags if supported
3469 check_cflags -Wdeclaration-after-statement
3470 check_cflags -Wall
3471 check_cflags -Wno-parentheses
3472 check_cflags -Wno-switch
3473 check_cflags -Wno-format-zero-length
3474 check_cflags -Wdisabled-optimization
3475 check_cflags -Wpointer-arith
3476 check_cflags -Wredundant-decls
3477 check_cflags -Wno-pointer-sign
3478 check_cflags -Wwrite-strings
3479 check_cflags -Wtype-limits
3480 check_cflags -Wundef
3481 check_cflags -Wmissing-prototypes
3482 check_cflags -Wno-pointer-to-int-cast
3483 check_cflags -Wstrict-prototypes
3484 enabled extra_warnings && check_cflags -Winline
3485
3486 # add some linker flags
3487 check_ldflags -Wl,--warn-common
3488 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3489 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3490
3491 enabled xmm_clobber_test &&
3492     check_ldflags -Wl,--wrap,avcodec_open2              \
3493                   -Wl,--wrap,avcodec_decode_audio4      \
3494                   -Wl,--wrap,avcodec_decode_video2      \
3495                   -Wl,--wrap,avcodec_decode_subtitle2   \
3496                   -Wl,--wrap,avcodec_encode_audio2      \
3497                   -Wl,--wrap,avcodec_encode_video       \
3498                   -Wl,--wrap,avcodec_encode_subtitle    \
3499                   -Wl,--wrap,sws_scale ||
3500     disable xmm_clobber_test
3501
3502 echo "X{};" > $TMPV
3503 if test_ldflags -Wl,--version-script,$TMPV; then
3504     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3505     check_cc <<EOF && enable symver_asm_label
3506 void ff_foo(void) __asm__ ("av_foo@VERSION");
3507 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3508 EOF
3509     check_cc <<EOF && enable symver_gnu_asm
3510 __asm__(".symver ff_foo,av_foo@VERSION");
3511 void ff_foo(void) {}
3512 EOF
3513 fi
3514
3515 if [ -n "$optflags" ]; then
3516     add_cflags $optflags
3517 elif enabled small; then
3518     add_cflags $size_cflags
3519 elif enabled optimizations; then
3520     add_cflags $speed_cflags
3521 else
3522     add_cflags $noopt_cflags
3523 fi
3524 check_cflags -fno-math-errno
3525 check_cflags -fno-signed-zeros
3526 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
3527 int x;
3528 EOF
3529
3530
3531 if enabled icc; then
3532     # Just warnings, no remarks
3533     check_cflags -w1
3534     # -wd: Disable following warnings
3535     # 144, 167, 556: -Wno-pointer-sign
3536     # 1292: attribute "foo" ignored
3537     # 1419: external declaration in primary source file
3538     # 10006: ignoring unknown option -fno-signed-zeros
3539     # 10148: ignoring unknown option -Wno-parentheses
3540     # 10156: ignoring option '-W'; no argument required
3541     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3542     # 11030: Warning unknown option --as-needed
3543     # 10156: ignoring option '-export'; no argument required
3544     check_ldflags -wd10156,11030
3545     # Allow to compile with optimizations
3546     check_ldflags -march=$cpu
3547     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3548     enable ebp_available
3549     if enabled x86_32; then
3550         test ${icc_version%%.*} -ge 11 &&
3551             check_cflags -falign-stack=maintain-16-byte ||
3552             disable aligned_stack
3553     fi
3554 elif enabled ccc; then
3555     # disable some annoying warnings
3556     add_cflags -msg_disable cvtu32to64
3557     add_cflags -msg_disable embedcomment
3558     add_cflags -msg_disable needconstext
3559     add_cflags -msg_disable nomainieee
3560     add_cflags -msg_disable ptrmismatch1
3561     add_cflags -msg_disable unreachcode
3562 elif enabled gcc; then
3563     check_cflags -fno-tree-vectorize
3564     check_cflags -Werror=implicit-function-declaration
3565     check_cflags -Werror=missing-prototypes
3566 elif enabled llvm_gcc; then
3567     check_cflags -mllvm -stack-alignment=16
3568 elif enabled clang; then
3569     check_cflags -mllvm -stack-alignment=16
3570     check_cflags -Qunused-arguments
3571 elif enabled armcc; then
3572     # 2523: use of inline assembler is deprecated
3573     add_cflags -W${armcc_opt},--diag_suppress=2523
3574     add_cflags -W${armcc_opt},--diag_suppress=1207
3575     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3576     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3577     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3578     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3579 elif enabled tms470; then
3580     add_cflags -pds=824 -pds=837
3581 elif enabled pathscale; then
3582     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3583 fi
3584
3585 enabled_any $THREADS_LIST      && enable threads
3586
3587 check_deps $CONFIG_LIST       \
3588            $CONFIG_EXTRA      \
3589            $HAVE_LIST         \
3590            $ALL_COMPONENTS    \
3591            $ALL_TESTS         \
3592
3593 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3594
3595 if test $target_os = "haiku"; then
3596     disable memalign
3597     disable posix_memalign
3598 fi
3599
3600 ! enabled_any memalign posix_memalign aligned_malloc &&
3601     enabled_any $need_memalign && enable memalign_hack
3602
3603 # add_dep lib dep
3604 # -> enable ${lib}_deps_${dep}
3605 # -> add $dep to ${lib}_deps only once
3606 add_dep() {
3607     lib=$1
3608     dep=$2
3609     enabled "${lib}_deps_${dep}" && return 0
3610     enable  "${lib}_deps_${dep}"
3611     prepend "${lib}_deps" $dep
3612 }
3613
3614 # merge deps lib components
3615 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
3616 merge_deps() {
3617     lib=$1
3618     shift
3619     for comp in $*; do
3620         enabled $comp || continue
3621         eval "dep=\"\$${comp}_deps\""
3622         for d in $dep; do
3623             add_dep $lib $d
3624         done
3625     done
3626 }
3627
3628 merge_deps libavfilter $FILTER_LIST
3629
3630 echo "install prefix            $prefix"
3631 echo "source path               $source_path"
3632 echo "C compiler                $cc"
3633 echo "ARCH                      $arch ($cpu)"
3634 if test "$build_suffix" != ""; then
3635     echo "build suffix              $build_suffix"
3636 fi
3637 if test "$progs_suffix" != ""; then
3638     echo "progs suffix              $progs_suffix"
3639 fi
3640 if test "$extra_version" != ""; then
3641     echo "version string suffix     $extra_version"
3642 fi
3643 echo "big-endian                ${bigendian-no}"
3644 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3645 if enabled x86; then
3646     echo "${yasmexe}                      ${yasm-no}"
3647     echo "MMX enabled               ${mmx-no}"
3648     echo "MMX2 enabled              ${mmx2-no}"
3649     echo "3DNow! enabled            ${amd3dnow-no}"
3650     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3651     echo "SSE enabled               ${sse-no}"
3652     echo "SSSE3 enabled             ${ssse3-no}"
3653     echo "AVX enabled               ${avx-no}"
3654     echo "CMOV enabled              ${cmov-no}"
3655     echo "CMOV is fast              ${fast_cmov-no}"
3656     echo "EBX available             ${ebx_available-no}"
3657     echo "EBP available             ${ebp_available-no}"
3658 fi
3659 if enabled arm; then
3660     echo "ARMv5TE enabled           ${armv5te-no}"
3661     echo "ARMv6 enabled             ${armv6-no}"
3662     echo "ARMv6T2 enabled           ${armv6t2-no}"
3663     echo "ARM VFP enabled           ${armvfp-no}"
3664     echo "NEON enabled              ${neon-no}"
3665 fi
3666 if enabled mips; then
3667     echo "MMI enabled               ${mmi-no}"
3668     echo "MIPS FPU enabled          ${mipsfpu-no}"
3669     echo "MIPS32R2 enabled          ${mips32r2-no}"
3670     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
3671     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
3672 fi
3673 if enabled ppc; then
3674     echo "AltiVec enabled           ${altivec-no}"
3675     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3676     echo "dcbzl available           ${dcbzl-no}"
3677 fi
3678 if enabled sparc; then
3679     echo "VIS enabled               ${vis-no}"
3680 fi
3681 echo "debug symbols             ${debug-no}"
3682 echo "strip symbols             ${stripping-no}"
3683 echo "optimize for size         ${small-no}"
3684 echo "optimizations             ${optimizations-no}"
3685 echo "static                    ${static-no}"
3686 echo "shared                    ${shared-no}"
3687 echo "postprocessing support    ${postproc-no}"
3688 echo "new filter support        ${avfilter-no}"
3689 echo "network support           ${network-no}"
3690 echo "threading support         ${thread_type-no}"
3691 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3692 echo "SDL support               ${sdl-no}"
3693 echo "libdxva2 enabled          ${dxva2-no}"
3694 echo "libva enabled             ${vaapi-no}"
3695 echo "libvdpau enabled          ${vdpau-no}"
3696 echo "AVISynth enabled          ${avisynth-no}"
3697 echo "frei0r enabled            ${frei0r-no}"
3698 echo "gnutls enabled            ${gnutls-no}"
3699 echo "libaacplus enabled        ${libaacplus-no}"
3700 echo "libass enabled            ${libass-no}"
3701 echo "libcdio support           ${libcdio-no}"
3702 echo "libcelt enabled           ${libcelt-no}"
3703 echo "libdc1394 support         ${libdc1394-no}"
3704 echo "libfaac enabled           ${libfaac-no}"
3705 echo "libfdk-aac enabled        ${libfdk_aac-no}"
3706 echo "libgsm enabled            ${libgsm-no}"
3707 echo "libiec61883 support       ${libiec61883-no}"
3708 echo "libilbc enabled           ${libilbc-no}"
3709 echo "libmodplug enabled        ${libmodplug-no}"
3710 echo "libmp3lame enabled        ${libmp3lame-no}"
3711 echo "libnut enabled            ${libnut-no}"
3712 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3713 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3714 echo "libopencv support         ${libopencv-no}"
3715 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3716 echo "libpulse enabled          ${libpulse-no}"
3717 echo "librtmp enabled           ${librtmp-no}"
3718 echo "libschroedinger enabled   ${libschroedinger-no}"
3719 echo "libspeex enabled          ${libspeex-no}"
3720 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
3721 echo "libtheora enabled         ${libtheora-no}"
3722 echo "libutvideo enabled        ${libutvideo-no}"
3723 echo "libv4l2 enabled           ${libv4l2-no}"
3724 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3725 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3726 echo "libvorbis enabled         ${libvorbis-no}"
3727 echo "libvpx enabled            ${libvpx-no}"
3728 echo "libx264 enabled           ${libx264-no}"
3729 echo "libxavs enabled           ${libxavs-no}"
3730 echo "libxvid enabled           ${libxvid-no}"
3731 echo "openal enabled            ${openal-no}"
3732 echo "openssl enabled           ${openssl-no}"
3733 echo "zlib enabled              ${zlib-no}"
3734 echo "bzlib enabled             ${bzlib-no}"
3735 echo "texi2html enabled         ${texi2html-no}"
3736 echo "pod2man enabled           ${pod2man-no}"
3737 echo "makeinfo enabled          ${makeinfo-no}"
3738 test -n "$random_seed" &&
3739     echo "random seed               ${random_seed}"
3740 echo
3741
3742 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3743     echo "Enabled ${type}s:"
3744     eval list=\$$(toupper $type)_LIST
3745     print_enabled '_*' $list | sort | pr -r -3 -t
3746     echo
3747 done
3748
3749 license="LGPL version 2.1 or later"
3750 if enabled nonfree; then
3751     license="nonfree and unredistributable"
3752 elif enabled gplv3; then
3753     license="GPL version 3 or later"
3754 elif enabled lgplv3; then
3755     license="LGPL version 3 or later"
3756 elif enabled gpl; then
3757     license="GPL version 2 or later"
3758 fi
3759
3760 echo "License: $license"
3761
3762 echo "Creating config.mak and config.h..."
3763
3764 test -e Makefile || $ln_s "$source_path/Makefile" .
3765
3766 enabled stripping || strip="echo skipping strip"
3767
3768 config_files="$TMPH config.mak"
3769
3770 cat > config.mak <<EOF
3771 # Automatically generated by configure - do not modify!
3772 ifndef FFMPEG_CONFIG_MAK
3773 FFMPEG_CONFIG_MAK=1
3774 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3775 prefix=$prefix
3776 LIBDIR=\$(DESTDIR)$libdir
3777 SHLIBDIR=\$(DESTDIR)$shlibdir
3778 INCDIR=\$(DESTDIR)$incdir
3779 BINDIR=\$(DESTDIR)$bindir
3780 DATADIR=\$(DESTDIR)$datadir
3781 MANDIR=\$(DESTDIR)$mandir
3782 SRC_PATH=$source_path
3783 ifndef MAIN_MAKEFILE
3784 SRC_PATH:=\$(SRC_PATH:.%=..%)
3785 endif
3786 CC_IDENT=$cc_ident
3787 ARCH=$arch
3788 CC=$cc
3789 CXX=$cxx
3790 AS=$as
3791 LD=$ld
3792 DEPCC=$dep_cc
3793 YASM=$yasmexe
3794 YASMDEP=$yasmexe
3795 AR=$ar
3796 RANLIB=$ranlib
3797 CP=cp -p
3798 LN_S=$ln_s
3799 STRIP=$strip
3800 CPPFLAGS=$CPPFLAGS
3801 CFLAGS=$CFLAGS
3802 CXXFLAGS=$CXXFLAGS
3803 ASFLAGS=$ASFLAGS
3804 AS_O=$CC_O
3805 CC_O=$CC_O
3806 CXX_O=$CXX_O
3807 LDFLAGS=$LDFLAGS
3808 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3809 SHFLAGS=$SHFLAGS
3810 YASMFLAGS=$YASMFLAGS
3811 BUILDSUF=$build_suffix
3812 PROGSSUF=$progs_suffix
3813 FULLNAME=$FULLNAME
3814 LIBPREF=$LIBPREF
3815 LIBSUF=$LIBSUF
3816 LIBNAME=$LIBNAME
3817 SLIBPREF=$SLIBPREF
3818 SLIBSUF=$SLIBSUF
3819 EXESUF=$EXESUF
3820 EXTRA_VERSION=$extra_version
3821 DEPFLAGS=$DEPFLAGS
3822 CCDEP=$CCDEP
3823 CXXDEP=$CXXDEP
3824 ASDEP=$ASDEP
3825 CC_DEPFLAGS=$CC_DEPFLAGS
3826 AS_DEPFLAGS=$AS_DEPFLAGS
3827 HOSTCC=$host_cc
3828 HOSTCFLAGS=$host_cflags
3829 HOSTEXESUF=$HOSTEXESUF
3830 HOSTLDFLAGS=$host_ldflags
3831 HOSTLIBS=$host_libs
3832 TARGET_EXEC=$target_exec
3833 TARGET_PATH=$target_path
3834 SDL_LIBS=$sdl_libs
3835 SDL_CFLAGS=$sdl_cflags
3836 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3837 EXTRALIBS=$extralibs
3838 INSTALL=$install
3839 LIBTARGET=${LIBTARGET}
3840 SLIBNAME=${SLIBNAME}
3841 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3842 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3843 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3844 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3845 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3846 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3847 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3848 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3849 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3850 NOREDZONE_FLAGS=$noredzone_flags
3851 EOF
3852
3853 get_version(){
3854     lcname=$1
3855     name=$(toupper $lcname)
3856     file=$source_path/$lcname/version.h
3857     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3858     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3859     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3860     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3861 }
3862
3863 get_version_old(){
3864     name=$1
3865     file=$source_path/$2
3866 # This condition will be removed when we stop supporting old libpostproc versions
3867 if ! test "$name" = LIBPOSTPROC || test "$postproc_version" = current; then
3868     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3869     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3870 fi
3871     lcname=$(tolower $name)
3872     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3873     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3874 }
3875
3876 get_version_old LIBPOSTPROC libpostproc/postprocess.h
3877 get_version_old LIBSWRESAMPLE libswresample/swresample.h
3878
3879 get_version libavcodec
3880 get_version libavdevice
3881 get_version libavfilter
3882 get_version libavformat
3883 get_version libavresample
3884 get_version libavutil
3885 get_version libswscale
3886
3887 cat > $TMPH <<EOF
3888 /* Automatically generated by configure - do not modify! */
3889 #ifndef FFMPEG_CONFIG_H
3890 #define FFMPEG_CONFIG_H
3891 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3892 #define FFMPEG_LICENSE "$(c_escape $license)"
3893 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3894 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3895 #define CC_TYPE "$cc_type"
3896 #define CC_VERSION $cc_version
3897 #define av_restrict $_restrict
3898 #define EXTERN_PREFIX "${extern_prefix}"
3899 #define EXTERN_ASM ${extern_prefix}
3900 #define SLIBSUF "$SLIBSUF"
3901 EOF
3902
3903 test -n "$assert_level" &&
3904     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
3905
3906 test -n "$malloc_prefix" &&
3907     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3908
3909 if enabled yasm; then
3910     append config_files $TMPASM
3911     printf '' >$TMPASM
3912 fi
3913
3914 print_config ARCH_   "$config_files" $ARCH_LIST
3915 print_config HAVE_   "$config_files" $HAVE_LIST
3916 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3917                                      $CONFIG_EXTRA      \
3918                                      $ALL_COMPONENTS    \
3919
3920 cat >>config.mak <<EOF
3921 LAVF_FATE_TESTS=$(print_enabled -n _test $LAVF_FATE_TESTS)
3922 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3923 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3924 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3925 EOF
3926
3927 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3928 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3929
3930 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3931 cp_if_changed $TMPH config.h
3932 touch .config
3933
3934 enabled yasm && cp_if_changed $TMPASM config.asm
3935
3936 cat > $TMPH <<EOF
3937 /* Generated by ffconf */
3938 #ifndef AVUTIL_AVCONFIG_H
3939 #define AVUTIL_AVCONFIG_H
3940 EOF
3941
3942 test "$postproc_version" != current && cat >> $TMPH <<EOF
3943 #define LIBPOSTPROC_VERSION_MAJOR $LIBPOSTPROC_VERSION_MAJOR
3944 #define LIBPOSTPROC_VERSION_MINOR $LIBPOSTPROC_VERSION_MINOR
3945 #define LIBPOSTPROC_VERSION_MICRO $LIBPOSTPROC_VERSION_MICRO
3946 EOF
3947
3948 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3949
3950 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3951
3952 cp_if_changed $TMPH libavutil/avconfig.h
3953
3954 test -n "$WARNINGS" && printf "\n$WARNINGS"
3955
3956 # build pkg-config files
3957
3958 pkgconfig_generate(){
3959 name=$1
3960 shortname=${name#lib}${build_suffix}
3961 comment=$2
3962 version=$3
3963 libs=$4
3964 requires=$5
3965 enabled ${name#lib} || return 0
3966 mkdir -p $name
3967 cat <<EOF > $name/$name.pc
3968 prefix=$prefix
3969 exec_prefix=\${prefix}
3970 libdir=$libdir
3971 includedir=$incdir
3972
3973 Name: $name
3974 Description: $comment
3975 Version: $version
3976 Requires: $(enabled shared || echo $requires)
3977 Requires.private: $(enabled shared && echo $requires)
3978 Conflicts:
3979 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3980 Libs.private: $(enabled shared && echo $libs)
3981 Cflags: -I\${includedir}
3982 EOF
3983
3984 mkdir -p doc/examples/pc-uninstalled
3985 includedir=${source_path}
3986 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
3987 cat <<EOF > doc/examples/pc-uninstalled/$name.pc
3988 prefix=
3989 exec_prefix=
3990 libdir=\${pcfiledir}/../../../$name
3991 includedir=${includedir}
3992
3993 Name: $name
3994 Description: $comment
3995 Version: $version
3996 Requires: $requires
3997 Conflicts:
3998 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3999 Cflags: -I\${includedir}
4000 EOF
4001 }
4002
4003 libavfilter_pc_deps=""
4004 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4005 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4006 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4007 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4008 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4009 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4010
4011 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4012 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4013
4014 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4015 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4016 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4017 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4018 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4019 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4020 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4021 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4022 pkgconfig_generate libswresample "FFmpeg audio rescaling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"