Merge remote-tracking branch 'qatar/master'
[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 Documentation options:
103   --disable-doc            do not build documentation
104   --disable-htmlpages      do not build HTML documentation pages
105   --disable-manpages       do not build man documentation pages
106   --disable-podpages       do not build POD documentation pages
107   --disable-txtpages       do not build text documentation pages
108
109 Component options:
110   --disable-ffmpeg         disable ffmpeg build
111   --disable-ffplay         disable ffplay build
112   --disable-ffprobe        disable ffprobe build
113   --disable-ffserver       disable ffserver build
114   --disable-avdevice       disable libavdevice build
115   --disable-avcodec        disable libavcodec build
116   --disable-avformat       disable libavformat build
117   --disable-swresample     disable libswresample build
118   --disable-swscale        disable libswscale build
119   --disable-postproc       disable libpostproc build
120   --disable-avfilter       disable libavfilter build
121   --enable-avresample      enable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-os2threads     disable OS/2 threads [auto]
125   --enable-x11grab         enable X11 grabbing [no]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-dwt            disable DWT code
129   --disable-lsp            disable LSP code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --enable-dxva2           enable DXVA2 code
134   --enable-vaapi           enable VAAPI code [autodetect]
135   --enable-vda             enable VDA code   [autodetect]
136   --enable-vdpau           enable VDPAU code [autodetect]
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176   --enable-avisynth        enable reading of AVISynth script files [no]
177   --enable-bzlib           enable bzlib [autodetect]
178   --enable-fontconfig      enable fontconfig
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
182   --enable-libass          enable libass subtitles rendering [no]
183   --enable-libbluray       enable BluRay reading using libbluray [no]
184   --enable-libcaca         enable textual display using libcaca
185   --enable-libcelt         enable CELT decoding via libcelt [no]
186   --enable-libcdio         enable audio CD grabbing with libcdio
187   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
188                            and libraw1394 [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
191   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
192   --enable-libfreetype     enable libfreetype [no]
193   --enable-libgsm          enable GSM de/encoding via libgsm [no]
194   --enable-libiec61883     enable iec61883 via libiec61883 [no]
195   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
196   --enable-libmodplug      enable ModPlug via libmodplug [no]
197   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
198   --enable-libnut          enable NUT (de)muxing via libnut,
199                            native (de)muxer exists [no]
200   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
201   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
202   --enable-libopencv       enable video filtering via libopencv [no]
203   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
204   --enable-libopus         enable Opus decoding via libopus [no]
205   --enable-libpulse        enable Pulseaudio input via libpulse [no]
206   --enable-librtmp         enable RTMP[E] support via librtmp [no]
207   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
208   --enable-libspeex        enable Speex de/encoding via libspeex [no]
209   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
210   --enable-libtheora       enable Theora encoding via libtheora [no]
211   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
212   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
213   --enable-libv4l2         enable libv4l2/v4l-utils [no]
214   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
215   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
216   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
217                            native implementation exists [no]
218   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
219   --enable-libx264         enable H.264 encoding via x264 [no]
220   --enable-libxavs         enable AVS encoding via xavs [no]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-openal          enable OpenAL 1.1 capture support [no]
224   --enable-openssl         enable openssl [no]
225   --enable-zlib            enable zlib [autodetect]
226
227 Advanced options (experts only):
228   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
229   --enable-cross-compile   assume a cross-compiler is used
230   --sysroot=PATH           root of cross-build tree
231   --sysinclude=PATH        location of cross-build system headers
232   --target-os=OS           compiler targets OS [$target_os]
233   --target-exec=CMD        command to run executables on target
234   --target-path=DIR        path to view of build directory on target
235   --nm=NM                  use nm tool NM [$nm_default]
236   --ar=AR                  use archive tool AR [$ar_default]
237   --as=AS                  use assembler AS [$as_default]
238   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
239   --cc=CC                  use C compiler CC [$cc_default]
240   --cxx=CXX                use C compiler CXX [$cxx_default]
241   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
242   --ld=LD                  use linker LD [$ld_default]
243   --host-cc=HOSTCC         use host C compiler HOSTCC
244   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
245   --host-ld=HOSTLD         use host linker HOSTLD
246   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
247   --host-libs=HLIBS        use libs HLIBS when linking for host
248   --host-os=OS             compiler host OS [$target_os]
249   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
250   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
251   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
252   --extra-libs=ELIBS       add ELIBS [$ELIBS]
253   --extra-version=STRING   version string suffix []
254   --optflags=OPTFLAGS      override optimization-related compiler flags
255   --build-suffix=SUFFIX    library name suffix []
256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
257   --progs-suffix=SUFFIX    program name suffix []
258   --arch=ARCH              select architecture [$arch]
259   --cpu=CPU                select the minimum required CPU (affects
260                            instruction selection, may crash on older CPUs)
261   --enable-pic             build position-independent code
262   --enable-sram            allow use of on-chip SRAM
263   --enable-thumb           compile for Thumb instruction set
264   --disable-symver         disable symbol versioning
265   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
266   --disable-safe-bitstream-reader
267                            disable buffer boundary checking in bitreaders
268                            (faster, but may crash)
269   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
270
271 Optimization options (experts only):
272   --disable-asm            disable all assembler optimizations
273   --disable-altivec        disable AltiVec optimizations
274   --disable-amd3dnow       disable 3DNow! optimizations
275   --disable-amd3dnowext    disable 3DNow! extended optimizations
276   --disable-mmx            disable MMX optimizations
277   --disable-mmxext         disable MMXEXT optimizations
278   --disable-sse            disable SSE optimizations
279   --disable-sse2           disable SSE2 optimizations
280   --disable-sse3           disable SSE3 optimizations
281   --disable-ssse3          disable SSSE3 optimizations
282   --disable-sse4           disable SSE4 optimizations
283   --disable-sse42          disable SSE4.2 optimizations
284   --disable-avx            disable AVX optimizations
285   --disable-fma4           disable FMA4 optimizations
286   --disable-armv5te        disable armv5te optimizations
287   --disable-armv6          disable armv6 optimizations
288   --disable-armv6t2        disable armv6t2 optimizations
289   --disable-armvfp         disable ARM VFP optimizations
290   --disable-mmi            disable MMI optimizations
291   --disable-neon           disable NEON optimizations
292   --disable-vis            disable VIS optimizations
293   --disable-inline-asm     disable use of inline assembler
294   --disable-yasm           disable use of yasm assembler
295   --disable-mips32r2       disable MIPS32R2 optimizations
296   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
297   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
298   --disable-mipsfpu        disable floating point MIPS optimizations
299   --disable-fast-unaligned consider unaligned accesses slow
300   --postproc-version=V     build libpostproc version V.
301                            Where V can be '$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO' or 'current'. [$postproc_version_default]
302
303 Developer options (useful when working on FFmpeg itself):
304   --enable-coverage        build with test coverage instrumentation
305   --disable-debug          disable debugging symbols
306   --enable-debug=LEVEL     set the debug level [$debuglevel]
307   --disable-optimizations  disable compiler optimizations
308   --enable-extra-warnings  enable more compiler warnings
309   --disable-stripping      disable stripping of executables and shared libraries
310   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
311                            2 causes a slowdown at runtime.
312   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
313   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
314                            leaks and errors, using the specified valgrind binary.
315                            Cannot be combined with --target-exec
316   --samples=PATH           location of test samples for FATE, if not set use
317                            \$FATE_SAMPLES at make invocation time.
318   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
319                            should be used only for debugging purposes)
320   --enable-random          randomly enable/disable components
321   --disable-random
322   --enable-random=LIST     randomly enable/disable specific components or
323   --disable-random=LIST    component groups. LIST is a comma-separated list
324                            of NAME[:PROB] entries where NAME is a component
325                            (group) and PROB the probability associated with
326                            NAME (default 0.5).
327   --random-seed=VALUE      seed value for --enable/disable-random
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370 cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 set_safe(){
446     var=$1
447     shift
448     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
449 }
450
451 get_safe(){
452     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
453 }
454
455 pushvar(){
456     for var in $*; do
457         eval level=\${${var}_level:=0}
458         eval ${var}_${level}="\$$var"
459         eval ${var}_level=$(($level+1))
460     done
461 }
462
463 popvar(){
464     for var in $*; do
465         eval level=\${${var}_level:-0}
466         test $level = 0 && continue
467         eval level=$(($level-1))
468         eval $var="\${${var}_${level}}"
469         eval ${var}_level=$level
470         eval unset ${var}_${level}
471     done
472 }
473
474 enable(){
475     set_all yes $*
476 }
477
478 disable(){
479     set_all no $*
480 }
481
482 enable_weak(){
483     set_weak yes $*
484 }
485
486 disable_weak(){
487     set_weak no $*
488 }
489
490 enable_safe(){
491     for var; do
492         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
493     done
494 }
495
496 disable_safe(){
497     for var; do
498         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
499     done
500 }
501
502 do_enable_deep(){
503     for var; do
504         enabled $var && continue
505         eval sel="\$${var}_select"
506         eval sgs="\$${var}_suggest"
507         pushvar var sgs
508         enable_deep $sel
509         popvar sgs
510         enable_deep_weak $sgs
511         popvar var
512     done
513 }
514
515 enable_deep(){
516     do_enable_deep $*
517     enable $*
518 }
519
520 enable_deep_weak(){
521     do_enable_deep $*
522     enable_weak $*
523 }
524
525 enabled(){
526     test "${1#!}" = "$1" && op== || op=!=
527     eval test "x\$${1#!}" $op "xyes"
528 }
529
530 disabled(){
531     test "${1#!}" = "$1" && op== || op=!=
532     eval test "x\$${1#!}" $op "xno"
533 }
534
535 enabled_all(){
536     for opt; do
537         enabled $opt || return 1
538     done
539 }
540
541 disabled_all(){
542     for opt; do
543         disabled $opt || return 1
544     done
545 }
546
547 enabled_any(){
548     for opt; do
549         enabled $opt && return 0
550     done
551 }
552
553 disabled_any(){
554     for opt; do
555         disabled $opt && return 0
556     done
557     return 1
558 }
559
560 set_default(){
561     for opt; do
562         eval : \${$opt:=\$${opt}_default}
563     done
564 }
565
566 is_in(){
567     value=$1
568     shift
569     for var in $*; do
570         [ $var = $value ] && return 0
571     done
572     return 1
573 }
574
575 check_deps(){
576     for cfg; do
577         cfg="${cfg#!}"
578         enabled ${cfg}_checking && die "Circular dependency for $cfg."
579         disabled ${cfg}_checking && continue
580         enable ${cfg}_checking
581
582         eval dep_all="\$${cfg}_deps"
583         eval dep_any="\$${cfg}_deps_any"
584         eval dep_sel="\$${cfg}_select"
585         eval dep_sgs="\$${cfg}_suggest"
586         eval dep_ifa="\$${cfg}_if"
587         eval dep_ifn="\$${cfg}_if_any"
588
589         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
590         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
591         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
592
593         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
594         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
595         enabled_all  $dep_all || disable $cfg
596         enabled_any  $dep_any || disable $cfg
597         disabled_any $dep_sel && disable $cfg
598
599         if enabled $cfg; then
600             eval dep_extralibs="\$${cfg}_extralibs"
601             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
602             enable_deep $dep_sel
603             enable_deep_weak $dep_sgs
604         fi
605
606         disable ${cfg}_checking
607     done
608 }
609
610 print_config_h(){
611     enabled $1 && v=1 || v=0
612     echo "#define $2 $v"
613 }
614
615 print_config_mak(){
616     enabled $1 && v= || v=!
617     echo "$v$2=yes"
618 }
619
620 print_config_asm(){
621     enabled $1 && v=1 || v=0
622     echo "%define $2 $v"
623 }
624
625 print_config(){
626     pfx=$1
627     files=$2
628     shift 2
629     for cfg; do
630         ucname="$(toupper $cfg)"
631         for f in $files; do
632             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
633         done
634     done
635 }
636
637 print_enabled(){
638     test "$1" = -n && end=" " && shift || end="\n"
639     suf=$1
640     shift
641     for v; do
642         enabled $v && printf "%s$end" ${v%$suf};
643     done
644 }
645
646 append(){
647     var=$1
648     shift
649     eval "$var=\"\$$var $*\""
650 }
651
652 prepend(){
653     var=$1
654     shift
655     eval "$var=\"$* \$$var\""
656 }
657
658 add_cppflags(){
659     append CPPFLAGS "$@"
660 }
661
662 add_cflags(){
663     append CFLAGS $($cflags_filter "$@")
664 }
665
666 add_cxxflags(){
667     append CXXFLAGS $($cflags_filter "$@")
668 }
669
670 add_asflags(){
671     append ASFLAGS $($asflags_filter "$@")
672 }
673
674 add_ldflags(){
675     append LDFLAGS $($ldflags_filter "$@")
676 }
677
678 add_extralibs(){
679     prepend extralibs $($ldflags_filter "$@")
680 }
681
682 add_host_cflags(){
683     append host_cflags $($host_cflags_filter "$@")
684 }
685
686 add_host_ldflags(){
687     append host_ldflags $($host_ldflags_filter "$@")
688 }
689
690 check_cmd(){
691     log "$@"
692     "$@" >> $logfile 2>&1
693 }
694
695 cc_o(){
696     eval printf '%s\\n' $CC_O
697 }
698
699 cc_e(){
700     eval printf '%s\\n' $CC_E
701 }
702
703 check_cc(){
704     log check_cc "$@"
705     cat > $TMPC
706     log_file $TMPC
707     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
708 }
709
710 check_cxx(){
711     log check_cxx "$@"
712     cat > $TMPCPP
713     log_file $TMPCPP
714     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
715 }
716
717 check_cpp(){
718     log check_cpp "$@"
719     cat > $TMPC
720     log_file $TMPC
721     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
722 }
723
724 as_o(){
725     eval printf '%s\\n' $AS_O
726 }
727
728 check_as(){
729     log check_as "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPC
733 }
734
735 check_inline_asm(){
736     log check_inline_asm "$@"
737     name="$1"
738     code="$2"
739     shift 2
740     disable $name
741     check_as "$@" <<EOF && enable $name
742 void foo(void){ __asm__ volatile($code); }
743 EOF
744 }
745
746 check_yasm(){
747     log check_yasm "$@"
748     echo "$1" > $TMPS
749     log_file $TMPS
750     shift 1
751     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
752 }
753
754 ld_o(){
755     eval printf '%s\\n' $LD_O
756 }
757
758 check_ld(){
759     log check_ld "$@"
760     type=$1
761     shift 1
762     flags=''
763     libs=''
764     for f; do
765         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
766     done
767     check_$type $($cflags_filter $flags) || return
768     flags=$($ldflags_filter $flags)
769     libs=$($ldflags_filter $libs)
770     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
771 }
772
773 check_code(){
774     log check_code "$@"
775     check=$1
776     headers=$2
777     code=$3
778     shift 3
779     {
780         for hdr in $headers; do
781             echo "#include <$hdr>"
782         done
783         echo "int main(void) { $code; return 0; }"
784     } | check_$check "$@"
785 }
786
787 check_cppflags(){
788     log check_cppflags "$@"
789     check_cc "$@" <<EOF && append CPPFLAGS "$@"
790 int x;
791 EOF
792 }
793
794 check_cflags(){
795     log check_cflags "$@"
796     set -- $($cflags_filter "$@")
797     check_cc "$@" <<EOF && append CFLAGS "$@"
798 int x;
799 EOF
800 }
801
802 check_cxxflags(){
803     log check_cxxflags "$@"
804     set -- $($cflags_filter "$@")
805     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
806 int x;
807 EOF
808 }
809
810 test_ldflags(){
811     log test_ldflags "$@"
812     check_ld "cc" "$@" <<EOF
813 int main(void){ return 0; }
814 EOF
815 }
816
817 check_ldflags(){
818     log check_ldflags "$@"
819     test_ldflags "$@" && add_ldflags "$@"
820 }
821
822 check_header(){
823     log check_header "$@"
824     header=$1
825     shift
826     disable_safe $header
827     check_cpp "$@" <<EOF && enable_safe $header
828 #include <$header>
829 int x;
830 EOF
831 }
832
833 check_func(){
834     log check_func "$@"
835     func=$1
836     shift
837     disable $func
838     check_ld "cc" "$@" <<EOF && enable $func
839 extern int $func();
840 int main(void){ $func(); }
841 EOF
842 }
843
844 check_mathfunc(){
845     log check_mathfunc "$@"
846     func=$1
847     shift
848     disable $func
849     check_ld "cc" "$@" <<EOF && enable $func
850 #include <math.h>
851 float foo(float f) { return $func(f); }
852 int main(void){ return (int) foo; }
853 EOF
854 }
855
856 check_func_headers(){
857     log check_func_headers "$@"
858     headers=$1
859     funcs=$2
860     shift 2
861     {
862         for hdr in $headers; do
863             echo "#include <$hdr>"
864         done
865         for func in $funcs; do
866             echo "long check_$func(void) { return (long) $func; }"
867         done
868         echo "int main(void) { return 0; }"
869     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
870 }
871
872 check_class_headers_cpp(){
873     log check_class_headers_cpp "$@"
874     headers=$1
875     classes=$2
876     shift 2
877     {
878         for hdr in $headers; do
879             echo "#include <$hdr>"
880         done
881         echo "int main(void) { "
882         i=1
883         for class in $classes; do
884             echo "$class obj$i;"
885             i=$(expr $i + 1)
886         done
887         echo "return 0; }"
888     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
889 }
890
891 check_cpp_condition(){
892     log check_cpp_condition "$@"
893     header=$1
894     condition=$2
895     shift 2
896     check_cpp "$@" <<EOF
897 #include <$header>
898 #if !($condition)
899 #error "unsatisfied condition: $condition"
900 #endif
901 EOF
902 }
903
904 check_lib(){
905     log check_lib "$@"
906     header="$1"
907     func="$2"
908     shift 2
909     check_header $header && check_func $func "$@" && add_extralibs "$@"
910 }
911
912 check_lib2(){
913     log check_lib2 "$@"
914     headers="$1"
915     funcs="$2"
916     shift 2
917     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
918 }
919
920 check_lib_cpp(){
921     log check_lib_cpp "$@"
922     headers="$1"
923     classes="$2"
924     shift 2
925     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
926 }
927
928 check_pkg_config(){
929     log check_pkg_config "$@"
930     pkg="$1"
931     headers="$2"
932     funcs="$3"
933     shift 3
934     $pkg_config --exists $pkg 2>/dev/null || return
935     pkg_cflags=$($pkg_config --cflags $pkg)
936     pkg_libs=$($pkg_config --libs $pkg)
937     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
938         set_safe ${pkg}_cflags $pkg_cflags   &&
939         set_safe ${pkg}_libs   $pkg_libs
940 }
941
942 check_exec(){
943     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
944 }
945
946 check_exec_crash(){
947     code=$(cat)
948
949     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
950     # are safe but may not be available everywhere.  Thus we use
951     # raise(SIGTERM) instead.  The check is run in a subshell so we
952     # can redirect the "Terminated" message from the shell.  SIGBUS
953     # is not defined by standard C so it is used conditionally.
954
955     (check_exec "$@") >> $logfile 2>&1 <<EOF
956 #include <signal.h>
957 static void sighandler(int sig){
958     raise(SIGTERM);
959 }
960 int func(void){
961     $code
962 }
963 int (*func_ptr)(void) = func;
964 int main(void){
965     signal(SIGILL, sighandler);
966     signal(SIGFPE, sighandler);
967     signal(SIGSEGV, sighandler);
968 #ifdef SIGBUS
969     signal(SIGBUS, sighandler);
970 #endif
971     return func_ptr();
972 }
973 EOF
974 }
975
976 check_type(){
977     log check_type "$@"
978     headers=$1
979     type=$2
980     shift 2
981     disable_safe "$type"
982     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
983 }
984
985 check_struct(){
986     log check_type "$@"
987     headers=$1
988     struct=$2
989     member=$3
990     shift 3
991     disable_safe "${struct}_${member}"
992     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
993         enable_safe "${struct}_${member}"
994 }
995
996 require(){
997     name="$1"
998     header="$2"
999     func="$3"
1000     shift 3
1001     check_lib $header $func "$@" || die "ERROR: $name not found"
1002 }
1003
1004 require2(){
1005     name="$1"
1006     headers="$2"
1007     func="$3"
1008     shift 3
1009     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1010 }
1011
1012 require_cpp(){
1013     name="$1"
1014     headers="$2"
1015     classes="$3"
1016     shift 3
1017     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1018 }
1019
1020 require_pkg_config(){
1021     pkg="$1"
1022     check_pkg_config "$@" || die "ERROR: $pkg not found"
1023     add_cflags    $(get_safe ${pkg}_cflags)
1024     add_extralibs $(get_safe ${pkg}_libs)
1025 }
1026
1027 hostcc_o(){
1028     eval printf '%s\\n' $HOSTCC_O
1029 }
1030
1031 check_host_cc(){
1032     log check_host_cc "$@"
1033     cat > $TMPC
1034     log_file $TMPC
1035     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1036 }
1037
1038 check_host_cflags(){
1039     log check_host_cflags "$@"
1040     set -- $($host_cflags_filter "$@")
1041     check_host_cc "$@" <<EOF && append host_cflags "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 apply(){
1047     file=$1
1048     shift
1049     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1050 }
1051
1052 cp_if_changed(){
1053     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1054     mkdir -p "$(dirname $2)"
1055     cp -f "$1" "$2"
1056 }
1057
1058 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1059 # system-dependent things.
1060
1061 COMPONENT_LIST="
1062     bsfs
1063     decoders
1064     demuxers
1065     encoders
1066     filters
1067     hwaccels
1068     indevs
1069     muxers
1070     outdevs
1071     parsers
1072     protocols
1073 "
1074
1075 DOCUMENT_LIST="
1076     doc
1077     htmlpages
1078     manpages
1079     podpages
1080     txtpages
1081 "
1082
1083 PROGRAM_LIST="
1084     ffplay
1085     ffprobe
1086     ffserver
1087     ffmpeg
1088 "
1089
1090 CONFIG_LIST="
1091     $COMPONENT_LIST
1092     $DOCUMENT_LIST
1093     $PROGRAM_LIST
1094     avcodec
1095     avdevice
1096     avfilter
1097     avformat
1098     avresample
1099     avisynth
1100     bzlib
1101     crystalhd
1102     dct
1103     dwt
1104     dxva2
1105     fast_unaligned
1106     fft
1107     fontconfig
1108     frei0r
1109     gnutls
1110     gpl
1111     gray
1112     hardcoded_tables
1113     incompatible_fork_abi
1114     libaacplus
1115     libass
1116     libbluray
1117     libcaca
1118     libcdio
1119     libcelt
1120     libdc1394
1121     libfaac
1122     libfdk_aac
1123     libflite
1124     libfreetype
1125     libgsm
1126     libiec61883
1127     libilbc
1128     libmodplug
1129     libmp3lame
1130     libnut
1131     libopencore_amrnb
1132     libopencore_amrwb
1133     libopencv
1134     libopenjpeg
1135     libopus
1136     libpulse
1137     librtmp
1138     libschroedinger
1139     libspeex
1140     libstagefright_h264
1141     libtheora
1142     libtwolame
1143     libutvideo
1144     libv4l2
1145     libvo_aacenc
1146     libvo_amrwbenc
1147     libvorbis
1148     libvpx
1149     libx264
1150     libxavs
1151     libxvid
1152     lsp
1153     mdct
1154     memalign_hack
1155     memory_poisoning
1156     network
1157     nonfree
1158     openal
1159     openssl
1160     pic
1161     postproc
1162     rdft
1163     runtime_cpudetect
1164     safe_bitstream_reader
1165     shared
1166     small
1167     sram
1168     static
1169     swresample
1170     swscale
1171     swscale_alpha
1172     thumb
1173     vaapi
1174     vda
1175     vdpau
1176     version3
1177     xmm_clobber_test
1178     x11grab
1179     zlib
1180 "
1181
1182 THREADS_LIST='
1183     pthreads
1184     w32threads
1185     os2threads
1186 '
1187
1188 ARCH_LIST='
1189     alpha
1190     arm
1191     avr32
1192     avr32_ap
1193     avr32_uc
1194     bfin
1195     ia64
1196     m68k
1197     mips
1198     mips64
1199     parisc
1200     ppc
1201     ppc64
1202     s390
1203     sh4
1204     sparc
1205     sparc64
1206     tomi
1207     x86
1208     x86_32
1209     x86_64
1210 '
1211
1212 ARCH_EXT_LIST_X86='
1213     amd3dnow
1214     amd3dnowext
1215     avx
1216     fma4
1217     mmx
1218     mmxext
1219     sse
1220     sse2
1221     sse3
1222     sse4
1223     sse42
1224     ssse3
1225 '
1226
1227 ARCH_EXT_LIST="
1228     $ARCH_EXT_LIST_X86
1229     altivec
1230     armv5te
1231     armv6
1232     armv6t2
1233     armvfp
1234     mmi
1235     neon
1236     ppc4xx
1237     vfpv3
1238     vis
1239     mipsfpu
1240     mips32r2
1241     mipsdspr1
1242     mipsdspr2
1243 "
1244
1245 HAVE_LIST_PUB='
1246     bigendian
1247     fast_unaligned
1248     incompatible_fork_abi
1249 '
1250
1251 HAVE_LIST="
1252     $ARCH_EXT_LIST
1253     $(add_suffix _external $ARCH_EXT_LIST)
1254     $(add_suffix _inline   $ARCH_EXT_LIST)
1255     $HAVE_LIST_PUB
1256     $THREADS_LIST
1257     aligned_malloc
1258     aligned_stack
1259     alsa_asoundlib_h
1260     altivec_h
1261     arpa_inet_h
1262     asm_mod_q
1263     asm_mod_y
1264     asm_types_h
1265     attribute_may_alias
1266     attribute_packed
1267     cbrtf
1268     clock_gettime
1269     closesocket
1270     cmov
1271     cpuid
1272     cpunop
1273     dcbzl
1274     dev_bktr_ioctl_bt848_h
1275     dev_bktr_ioctl_meteor_h
1276     dev_ic_bt8xx_h
1277     dev_video_bktr_ioctl_bt848_h
1278     dev_video_meteor_ioctl_meteor_h
1279     dlfcn_h
1280     dlopen
1281     dos_paths
1282     dxva_h
1283     ebp_available
1284     ebx_available
1285     exp2
1286     exp2f
1287     fast_64bit
1288     fast_clz
1289     fast_cmov
1290     fcntl
1291     fork
1292     getaddrinfo
1293     gethrtime
1294     getopt
1295     GetProcessAffinityMask
1296     GetProcessMemoryInfo
1297     GetProcessTimes
1298     GetSystemTimeAsFileTime
1299     getrusage
1300     gettimeofday
1301     glob
1302     gnu_as
1303     ibm_asm
1304     inet_aton
1305     inline_asm
1306     io_h
1307     isatty
1308     isinf
1309     isnan
1310     jack_port_get_latency_range
1311     kbhit
1312     ldbrx
1313     libdc1394_1
1314     libdc1394_2
1315     llrint
1316     llrintf
1317     local_aligned_16
1318     local_aligned_8
1319     localtime_r
1320     log2
1321     log2f
1322     loongson
1323     lrint
1324     lrintf
1325     lzo1x_999_compress
1326     machine_ioctl_bt848_h
1327     machine_ioctl_meteor_h
1328     makeinfo
1329     malloc_h
1330     MapViewOfFile
1331     memalign
1332     mkstemp
1333     mm_empty
1334     mmap
1335     msvcrt
1336     nanosleep
1337     PeekNamedPipe
1338     perl
1339     pod2man
1340     poll_h
1341     posix_memalign
1342     pthread_cancel
1343     rdtsc
1344     rint
1345     round
1346     roundf
1347     rweflags
1348     sched_getaffinity
1349     sdl
1350     sdl_video_size
1351     setmode
1352     setrlimit
1353     Sleep
1354     sndio_h
1355     socklen_t
1356     soundcard_h
1357     strerror_r
1358     struct_addrinfo
1359     struct_group_source_req
1360     struct_ip_mreq_source
1361     struct_ipv6_mreq
1362     struct_pollfd
1363     struct_rusage_ru_maxrss
1364     struct_sctp_event_subscribe
1365     struct_sockaddr_in6
1366     struct_sockaddr_sa_len
1367     struct_sockaddr_storage
1368     struct_v4l2_frmivalenum_discrete
1369     symver
1370     symver_asm_label
1371     symver_gnu_asm
1372     sysconf
1373     sysctl
1374     sys_mman_h
1375     sys_param_h
1376     sys_resource_h
1377     sys_select_h
1378     sys_soundcard_h
1379     sys_time_h
1380     sys_videoio_h
1381     termios_h
1382     texi2html
1383     threads
1384     trunc
1385     truncf
1386     unistd_h
1387     usleep
1388     vfp_args
1389     VirtualAlloc
1390     windows_h
1391     winsock2_h
1392     xform_asm
1393     xgetbv
1394     xmm_clobbers
1395     yasm
1396 "
1397
1398 # options emitted with CONFIG_ prefix but not available on command line
1399 CONFIG_EXTRA="
1400     aandcttables
1401     ac3dsp
1402     avutil
1403     error_resilience
1404     gcrypt
1405     golomb
1406     gplv3
1407     h264chroma
1408     h264dsp
1409     h264pred
1410     h264qpel
1411     huffman
1412     lgplv3
1413     lpc
1414     mpegaudiodsp
1415     mpegvideo
1416     mpegvideoenc
1417     nettle
1418     rangecoder
1419     rtpdec
1420     sinewin
1421     vp3dsp
1422 "
1423
1424 CMDLINE_SELECT="
1425     $ARCH_EXT_LIST
1426     $CONFIG_LIST
1427     $THREADS_LIST
1428     asm
1429     coverage
1430     cross_compile
1431     debug
1432     extra_warnings
1433     inline_asm
1434     logging
1435     optimizations
1436     stripping
1437     symver
1438     yasm
1439 "
1440
1441 PATHS_LIST='
1442     bindir
1443     datadir
1444     incdir
1445     libdir
1446     mandir
1447     prefix
1448     shlibdir
1449 '
1450
1451 CMDLINE_SET="
1452     $PATHS_LIST
1453     ar
1454     arch
1455     as
1456     assert_level
1457     build_suffix
1458     cc
1459     cpu
1460     cross_prefix
1461     cxx
1462     dep_cc
1463     extra_version
1464     host_cc
1465     host_cflags
1466     host_ld
1467     host_ldflags
1468     host_libs
1469     host_os
1470     install
1471     ld
1472     logfile
1473     malloc_prefix
1474     nm
1475     optflags
1476     pkg_config
1477     postproc_version
1478     progs_suffix
1479     random_seed
1480     samples
1481     strip
1482     sysinclude
1483     sysroot
1484     target_exec
1485     target_os
1486     target_path
1487     valgrind
1488     yasmexe
1489 "
1490
1491 CMDLINE_APPEND="
1492     extra_cflags
1493     extra_cxxflags
1494 "
1495
1496 # code dependency declarations
1497
1498 # architecture extensions
1499
1500 armv5te_deps="arm"
1501 armv6_deps="arm"
1502 armv6t2_deps="arm"
1503 armvfp_deps="arm"
1504 neon_deps="arm"
1505 vfpv3_deps="armvfp"
1506
1507 mipsfpu_deps="mips"
1508 mips32r2_deps="mips"
1509 mipsdspr1_deps="mips"
1510 mipsdspr2_deps="mips"
1511 mmi_deps="mips"
1512
1513 altivec_deps="ppc"
1514 ppc4xx_deps="ppc"
1515
1516 vis_deps="sparc"
1517
1518 x86_64_suggest="cmov fast_cmov"
1519
1520 amd3dnow_deps="mmx"
1521 amd3dnowext_deps="amd3dnow"
1522 mmx_deps="x86"
1523 mmxext_deps="mmx"
1524 sse_deps="mmxext"
1525 sse2_deps="sse"
1526 sse3_deps="sse2"
1527 ssse3_deps="sse3"
1528 sse4_deps="ssse3"
1529 sse42_deps="sse4"
1530 avx_deps="sse42"
1531 fma4_deps="avx"
1532
1533 mmx_external_deps="yasm"
1534 mmx_inline_deps="inline_asm"
1535 mmx_suggest="mmx_external mmx_inline"
1536
1537 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1538     eval dep=\$${ext}_deps
1539     eval ${ext}_external_deps='"${dep}_external"'
1540     eval ${ext}_inline_deps='"${dep}_inline"'
1541     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1542 done
1543
1544 aligned_stack_if_any="ppc x86"
1545 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1546 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1547 fast_unaligned_if_any="armv6 ppc x86"
1548
1549 inline_asm_deps="!tms470"
1550 need_memalign="altivec neon sse"
1551
1552 symver_if_any="symver_asm_label symver_gnu_asm"
1553
1554 log2_deps="!msvcrt"
1555
1556 # subsystems
1557 dct_select="rdft"
1558 mdct_select="fft"
1559 rdft_select="fft"
1560 mpegaudiodsp_select="dct"
1561 mpegvideoenc_select="mpegvideo"
1562
1563 # decoders / encoders / hardware accelerators
1564 aac_decoder_select="mdct sinewin"
1565 aac_encoder_select="mdct sinewin"
1566 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1567 ac3_decoder_select="mdct ac3dsp ac3_parser"
1568 ac3_encoder_select="mdct ac3dsp"
1569 ac3_fixed_encoder_select="mdct ac3dsp"
1570 alac_encoder_select="lpc"
1571 amrnb_decoder_select="lsp"
1572 amrwb_decoder_select="lsp"
1573 amv_encoder_select="aandcttables"
1574 atrac1_decoder_select="mdct sinewin"
1575 atrac3_decoder_select="mdct"
1576 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1577 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1578 cavs_decoder_select="golomb mpegvideo"
1579 cook_decoder_select="mdct sinewin"
1580 cscd_decoder_suggest="zlib"
1581 dca_decoder_select="mdct"
1582 dirac_decoder_select="dwt golomb"
1583 dnxhd_encoder_select="aandcttables mpegvideoenc"
1584 dxa_decoder_select="zlib"
1585 eac3_decoder_select="ac3_decoder"
1586 eac3_encoder_select="ac3_encoder"
1587 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1588 eatgq_decoder_select="aandcttables"
1589 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1590 exr_decoder_select="zlib"
1591 ffv1_decoder_select="golomb rangecoder"
1592 ffv1_encoder_select="rangecoder"
1593 ffvhuff_encoder_select="huffman"
1594 flac_decoder_select="golomb"
1595 flac_encoder_select="golomb lpc"
1596 flashsv_decoder_select="zlib"
1597 flashsv_encoder_select="zlib"
1598 flashsv2_encoder_select="zlib"
1599 flashsv2_decoder_select="zlib"
1600 flv_decoder_select="h263_decoder"
1601 flv_encoder_select="h263_encoder"
1602 fraps_decoder_select="huffman"
1603 h261_decoder_select="error_resilience mpegvideo"
1604 h261_encoder_select="aandcttables mpegvideoenc"
1605 h263_decoder_select="error_resilience h263_parser mpegvideo"
1606 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1607 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1608 h263i_decoder_select="h263_decoder"
1609 h263p_encoder_select="h263_encoder"
1610 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1611 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1612 h264_dxva2_hwaccel_deps="dxva2api_h"
1613 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1614 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1615 h264_vda_decoder_select="vda h264_parser h264_decoder"
1616 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1617 h264_vda_hwaccel_select="vda h264_decoder"
1618 h264_vdpau_decoder_select="vdpau h264_decoder"
1619 huffyuv_encoder_select="huffman"
1620 iac_decoder_select="fft mdct sinewin"
1621 imc_decoder_select="fft mdct sinewin"
1622 jpegls_decoder_select="golomb"
1623 jpegls_encoder_select="golomb"
1624 ljpeg_encoder_select="aandcttables mpegvideoenc"
1625 loco_decoder_select="golomb"
1626 mdec_decoder_select="error_resilience mpegvideo"
1627 mjpeg_encoder_select="aandcttables mpegvideoenc"
1628 mlp_decoder_select="mlp_parser"
1629 mp1_decoder_select="mpegaudiodsp"
1630 mp1float_decoder_select="mpegaudiodsp"
1631 mp2_decoder_select="mpegaudiodsp"
1632 mp2float_decoder_select="mpegaudiodsp"
1633 mp3_decoder_select="mpegaudiodsp"
1634 mp3adu_decoder_select="mpegaudiodsp"
1635 mp3adufloat_decoder_select="mpegaudiodsp"
1636 mp3float_decoder_select="mpegaudiodsp"
1637 mp3on4_decoder_select="mpegaudiodsp"
1638 mp3on4float_decoder_select="mpegaudiodsp"
1639 mpc7_decoder_select="mpegaudiodsp"
1640 mpc8_decoder_select="mpegaudiodsp"
1641 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1642 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1643 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1644 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1645 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1646 mpeg1video_decoder_select="error_resilience mpegvideo"
1647 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1648 mpeg2_crystalhd_decoder_select="crystalhd"
1649 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1650 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1651 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1652 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1653 mpeg2video_decoder_select="error_resilience mpegvideo"
1654 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1655 mpeg4_crystalhd_decoder_select="crystalhd"
1656 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1657 mpeg4_encoder_select="h263_encoder"
1658 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1659 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1660 msmpeg4_crystalhd_decoder_select="crystalhd"
1661 msmpeg4v1_decoder_select="h263_decoder"
1662 msmpeg4v1_encoder_select="h263_encoder"
1663 msmpeg4v2_decoder_select="h263_decoder"
1664 msmpeg4v2_encoder_select="h263_encoder"
1665 msmpeg4v3_decoder_select="h263_decoder"
1666 msmpeg4v3_encoder_select="h263_encoder"
1667 mss2_decoder_select="vc1_decoder"
1668 nellymoser_decoder_select="mdct sinewin"
1669 nellymoser_encoder_select="mdct sinewin"
1670 png_decoder_select="zlib"
1671 png_encoder_select="zlib"
1672 qcelp_decoder_select="lsp"
1673 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1674 ra_144_encoder_select="lpc"
1675 ralf_decoder_select="golomb"
1676 rv10_decoder_select="h263_decoder"
1677 rv10_encoder_select="h263_encoder"
1678 rv20_decoder_select="h263_decoder"
1679 rv20_encoder_select="h263_encoder"
1680 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1681 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1682 shorten_decoder_select="golomb"
1683 sipr_decoder_select="lsp"
1684 snow_decoder_select="dwt rangecoder"
1685 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1686 sonic_decoder_select="golomb"
1687 sonic_encoder_select="golomb"
1688 sonic_ls_encoder_select="golomb"
1689 svq1_decoder_select="error_resilience mpegvideo"
1690 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1691 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1692 svq3_decoder_suggest="zlib"
1693 theora_decoder_select="vp3_decoder"
1694 tiff_decoder_suggest="zlib"
1695 tiff_encoder_suggest="zlib"
1696 truehd_decoder_select="mlp_parser"
1697 tscc_decoder_select="zlib"
1698 twinvq_decoder_select="mdct lsp sinewin"
1699 utvideo_encoder_select="huffman"
1700 vc1_crystalhd_decoder_select="crystalhd"
1701 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1702 vc1_dxva2_hwaccel_deps="dxva2api_h"
1703 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1704 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1705 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1706 vc1image_decoder_select="vc1_decoder"
1707 vorbis_decoder_select="mdct"
1708 vorbis_encoder_select="mdct"
1709 vp3_decoder_select="vp3dsp"
1710 vp5_decoder_select="vp3dsp"
1711 vp6_decoder_select="huffman vp3dsp"
1712 vp6a_decoder_select="vp6_decoder"
1713 vp6f_decoder_select="vp6_decoder"
1714 vp8_decoder_select="h264pred h264qpel"
1715 wmapro_decoder_select="mdct sinewin"
1716 wmav1_decoder_select="mdct sinewin"
1717 wmav1_encoder_select="mdct sinewin"
1718 wmav2_decoder_select="mdct sinewin"
1719 wmav2_encoder_select="mdct sinewin"
1720 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1721 wmv1_decoder_select="h263_decoder"
1722 wmv1_encoder_select="h263_encoder"
1723 wmv2_decoder_select="h263_decoder"
1724 wmv2_encoder_select="h263_encoder"
1725 wmv3_decoder_select="vc1_decoder"
1726 wmv3_crystalhd_decoder_select="crystalhd"
1727 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1728 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1729 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1730 wmv3image_decoder_select="wmv3_decoder"
1731 zerocodec_decoder_select="zlib"
1732 zlib_decoder_select="zlib"
1733 zlib_encoder_select="zlib"
1734 zmbv_decoder_select="zlib"
1735 zmbv_encoder_select="zlib"
1736
1737 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1738 vaapi_deps="va_va_h"
1739 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1740 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1741
1742 # parsers
1743 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1744 mpeg4video_parser_select="error_resilience mpegvideo"
1745 mpegvideo_parser_select="error_resilience mpegvideo"
1746 vc1_parser_select="error_resilience mpegvideo"
1747
1748 # external libraries
1749 libaacplus_encoder_deps="libaacplus"
1750 libcelt_decoder_deps="libcelt"
1751 libfaac_encoder_deps="libfaac"
1752 libfdk_aac_encoder_deps="libfdk_aac"
1753 libgsm_decoder_deps="libgsm"
1754 libgsm_encoder_deps="libgsm"
1755 libgsm_ms_decoder_deps="libgsm"
1756 libgsm_ms_encoder_deps="libgsm"
1757 libilbc_decoder_deps="libilbc"
1758 libilbc_encoder_deps="libilbc"
1759 libmodplug_demuxer_deps="libmodplug"
1760 libmp3lame_encoder_deps="libmp3lame"
1761 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1762 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1763 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1764 libopenjpeg_decoder_deps="libopenjpeg"
1765 libopenjpeg_encoder_deps="libopenjpeg"
1766 libopus_decoder_deps="libopus"
1767 libschroedinger_decoder_deps="libschroedinger"
1768 libschroedinger_encoder_deps="libschroedinger"
1769 libspeex_decoder_deps="libspeex"
1770 libspeex_encoder_deps="libspeex"
1771 libstagefright_h264_decoder_deps="libstagefright_h264"
1772 libtheora_encoder_deps="libtheora"
1773 libtwolame_encoder_deps="libtwolame"
1774 libvo_aacenc_encoder_deps="libvo_aacenc"
1775 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1776 libvorbis_decoder_deps="libvorbis"
1777 libvorbis_encoder_deps="libvorbis"
1778 libvpx_decoder_deps="libvpx"
1779 libvpx_encoder_deps="libvpx"
1780 libx264_encoder_deps="libx264"
1781 libx264rgb_encoder_deps="libx264"
1782 libxavs_encoder_deps="libxavs"
1783 libxvid_encoder_deps="libxvid"
1784 libutvideo_decoder_deps="libutvideo"
1785 libutvideo_encoder_deps="libutvideo"
1786
1787 # demuxers / muxers
1788 ac3_demuxer_select="ac3_parser"
1789 asf_stream_muxer_select="asf_muxer"
1790 avisynth_demuxer_deps="avisynth"
1791 dirac_demuxer_select="dirac_parser"
1792 eac3_demuxer_select="ac3_parser"
1793 flac_demuxer_select="flac_parser"
1794 ipod_muxer_select="mov_muxer"
1795 libnut_demuxer_deps="libnut"
1796 libnut_muxer_deps="libnut"
1797 matroska_audio_muxer_select="matroska_muxer"
1798 matroska_demuxer_suggest="zlib bzlib"
1799 mov_demuxer_suggest="zlib"
1800 mp3_demuxer_select="mpegaudio_parser"
1801 mp4_muxer_select="mov_muxer"
1802 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1803 mpegtsraw_demuxer_select="mpegts_demuxer"
1804 mxf_d10_muxer_select="mxf_muxer"
1805 ogg_demuxer_select="golomb"
1806 psp_muxer_select="mov_muxer"
1807 rtp_demuxer_select="sdp_demuxer"
1808 rtp_muxer_select="mpegvideo"
1809 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1810 rtsp_demuxer_select="http_protocol rtpdec"
1811 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1812 sap_demuxer_select="sdp_demuxer"
1813 sap_muxer_select="rtp_muxer rtp_protocol"
1814 sdp_demuxer_select="rtpdec"
1815 spdif_muxer_select="aac_parser"
1816 tg2_muxer_select="mov_muxer"
1817 tgp_muxer_select="mov_muxer"
1818 w64_demuxer_deps="wav_demuxer"
1819
1820 # indevs / outdevs
1821 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1822 alsa_outdev_deps="alsa_asoundlib_h"
1823 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1824 caca_outdev_deps="libcaca"
1825 dshow_indev_deps="IBaseFilter"
1826 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1827 dv1394_indev_deps="dv1394 dv_demuxer"
1828 fbdev_indev_deps="linux_fb_h"
1829 iec61883_indev_deps="libiec61883"
1830 jack_indev_deps="jack_jack_h sem_timedwait"
1831 lavfi_indev_deps="avfilter"
1832 libcdio_indev_deps="libcdio"
1833 libdc1394_indev_deps="libdc1394"
1834 libv4l2_indev_deps="libv4l2"
1835 openal_indev_deps="openal"
1836 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1837 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1838 pulse_indev_deps="libpulse"
1839 sdl_outdev_deps="sdl"
1840 sndio_indev_deps="sndio_h"
1841 sndio_outdev_deps="sndio_h"
1842 v4l_indev_deps="linux_videodev_h"
1843 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1844 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1845 vfwcap_indev_extralibs="-lavicap32"
1846 x11grab_indev_deps="x11grab"
1847
1848 # protocols
1849 bluray_protocol_deps="libbluray"
1850 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1851 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1852 ffrtmpcrypt_protocol_select="tcp_protocol"
1853 ffrtmphttp_protocol_deps="!librtmp_protocol"
1854 ffrtmphttp_protocol_select="http_protocol"
1855 gopher_protocol_deps="network"
1856 httpproxy_protocol_deps="network"
1857 httpproxy_protocol_select="tcp_protocol"
1858 http_protocol_deps="network"
1859 http_protocol_select="tcp_protocol"
1860 https_protocol_select="tls_protocol"
1861 librtmp_protocol_deps="librtmp"
1862 librtmpe_protocol_deps="librtmp"
1863 librtmps_protocol_deps="librtmp"
1864 librtmpt_protocol_deps="librtmp"
1865 librtmpte_protocol_deps="librtmp"
1866 mmsh_protocol_select="http_protocol"
1867 mmst_protocol_deps="network"
1868 rtmp_protocol_deps="!librtmp_protocol"
1869 rtmp_protocol_select="tcp_protocol"
1870 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1871 rtmps_protocol_deps="!librtmp_protocol"
1872 rtmps_protocol_select="tls_protocol"
1873 rtmpt_protocol_select="ffrtmphttp_protocol"
1874 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1875 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1876 rtp_protocol_select="udp_protocol"
1877 sctp_protocol_deps="network struct_sctp_event_subscribe"
1878 tcp_protocol_deps="network"
1879 tls_protocol_deps_any="openssl gnutls"
1880 tls_protocol_select="tcp_protocol"
1881 udp_protocol_deps="network"
1882
1883 # filters
1884 aconvert_filter_deps="swresample"
1885 amovie_filter_deps="avcodec avformat"
1886 aresample_filter_deps="swresample"
1887 ass_filter_deps="libass"
1888 asyncts_filter_deps="avresample"
1889 atempo_filter_deps="avcodec rdft"
1890 blackframe_filter_deps="gpl"
1891 boxblur_filter_deps="gpl"
1892 colormatrix_filter_deps="gpl"
1893 cropdetect_filter_deps="gpl"
1894 decimate_filter_deps="gpl avcodec"
1895 delogo_filter_deps="gpl"
1896 deshake_filter_deps="avcodec"
1897 drawtext_filter_deps="libfreetype"
1898 flite_filter_deps="libflite"
1899 frei0r_filter_deps="frei0r dlopen"
1900 frei0r_filter_extralibs='$ldl'
1901 frei0r_src_filter_deps="frei0r dlopen"
1902 frei0r_src_filter_extralibs='$ldl'
1903 hqdn3d_filter_deps="gpl"
1904 movie_filter_deps="avcodec avformat"
1905 mp_filter_deps="gpl avcodec swscale postproc inline_asm"
1906 mptestsrc_filter_deps="gpl"
1907 negate_filter_deps="lut_filter"
1908 resample_filter_deps="avresample"
1909 ocv_filter_deps="libopencv"
1910 pan_filter_deps="swresample"
1911 removelogo_filter_deps="avcodec avformat swscale"
1912 scale_filter_deps="swscale"
1913 smartblur_filter_deps="gpl swscale"
1914 select_filter_deps="avcodec"
1915 showspectrum_filter_deps="avcodec"
1916 super2xsai_filter_deps="gpl"
1917 tinterlace_filter_deps="gpl"
1918 yadif_filter_deps="gpl"
1919
1920 # libraries
1921 avdevice_deps="avcodec avformat"
1922 avformat_deps="avcodec"
1923 postproc_deps="gpl"
1924
1925 # programs
1926 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
1927 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
1928                setpts_filter null_filter anull_filter ffabuffersink_filter"
1929 ffplay_deps="avcodec avformat swscale swresample sdl"
1930 ffplay_select="ffbuffersink_filter rdft"
1931 ffprobe_deps="avcodec avformat"
1932 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1933 ffserver_extralibs='$ldl'
1934
1935 # documentation
1936 podpages_deps="perl"
1937 manpages_deps="perl pod2man"
1938 htmlpages_deps="texi2html"
1939 txtpages_deps="makeinfo"
1940 doc_deps_any="manpages htmlpages podpages txtpages"
1941
1942 # tests
1943 colormatrix1_test_deps="colormatrix_filter"
1944 colormatrix2_test_deps="colormatrix_filter"
1945 flashsv2_test_deps="zlib"
1946 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1947 mpng_test_deps="zlib"
1948 pp_test_deps="mp_filter"
1949 pp2_test_deps="mp_filter"
1950 pp3_test_deps="mp_filter"
1951 pp4_test_deps="mp_filter"
1952 pp5_test_deps="mp_filter"
1953 pp6_test_deps="mp_filter"
1954 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1955 zlib_test_deps="zlib"
1956 zmbv_test_deps="zlib"
1957
1958 test_deps(){
1959     suf1=$1
1960     suf2=$2
1961     shift 2
1962     for v; do
1963         dep=${v%=*}
1964         tests=${v#*=}
1965         for name in ${tests}; do
1966             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1967         done
1968     done
1969 }
1970
1971 test_deps _muxer _demuxer                                               \
1972     aiff                                                                \
1973     pcm_alaw=alaw                                                       \
1974     asf                                                                 \
1975     au                                                                  \
1976     avi                                                                 \
1977     dv=dv_fmt                                                           \
1978     ffm                                                                 \
1979     flv=flv_fmt                                                         \
1980     gxf                                                                 \
1981     matroska=mkv                                                        \
1982     mmf                                                                 \
1983     mov="mov ismv"                                                      \
1984     pcm_mulaw=mulaw                                                     \
1985     mxf="mxf mxf_d10"                                                   \
1986     nut                                                                 \
1987     ogg="ogg ogg_vp3"                                                   \
1988     rawvideo=pixfmt                                                     \
1989     rm                                                                  \
1990     swf                                                                 \
1991     mpegts=ts                                                           \
1992     voc                                                                 \
1993     wav                                                                 \
1994     yuv4mpegpipe=yuv4mpeg                                               \
1995
1996 # default parameters
1997
1998 logfile="config.log"
1999
2000 # installation paths
2001 prefix_default="/usr/local"
2002 bindir_default='${prefix}/bin'
2003 datadir_default='${prefix}/share/ffmpeg'
2004 incdir_default='${prefix}/include'
2005 libdir_default='${prefix}/lib'
2006 mandir_default='${prefix}/share/man'
2007 shlibdir_default="$libdir_default"
2008 postproc_version_default="current"
2009
2010 # toolchain
2011 ar_default="ar"
2012 cc_default="gcc"
2013 cxx_default="g++"
2014 host_cc_default="gcc"
2015 install="install"
2016 ln_s="ln -sf"
2017 nm_default="nm"
2018 objformat="elf"
2019 pkg_config_default=pkg-config
2020 ranlib="ranlib"
2021 strip_default="strip"
2022 yasmexe_default="yasm"
2023
2024 nm_opts='-g'
2025 nogas=":"
2026
2027 # machine
2028 arch_default=$(uname -m)
2029 cpu="generic"
2030
2031 # OS
2032 target_os_default=$(tolower $(uname -s))
2033 host_os=$target_os_default
2034
2035 # alternative libpostproc version
2036 ALT_PP_VER_MAJOR=51
2037 ALT_PP_VER_MINOR=2
2038 ALT_PP_VER_MICRO=101
2039 ALT_PP_VER=$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO
2040
2041 # configurable options
2042 enable $PROGRAM_LIST
2043 enable $DOCUMENT_LIST
2044
2045 enable avcodec
2046 enable avdevice
2047 enable avfilter
2048 enable avformat
2049 enable avutil
2050 enable postproc
2051 enable stripping
2052 enable swresample
2053 enable swscale
2054
2055 enable asm
2056 enable debug
2057 enable doc
2058 enable network
2059 enable optimizations
2060 enable safe_bitstream_reader
2061 enable static
2062 enable swscale_alpha
2063
2064 # build settings
2065 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2066 FFSERVERLDFLAGS=-Wl,-E
2067 LIBPREF="lib"
2068 LIBSUF=".a"
2069 FULLNAME='$(NAME)$(BUILDSUF)'
2070 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2071 SLIBPREF="lib"
2072 SLIBSUF=".so"
2073 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2074 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2075 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2076 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2077 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2078 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2079
2080 asflags_filter=echo
2081 cflags_filter=echo
2082 ldflags_filter=echo
2083
2084 AS_C='-c'
2085 AS_O='-o $@'
2086 CC_C='-c'
2087 CC_E='-E -o $@'
2088 CC_O='-o $@'
2089 CXX_C='-c'
2090 CXX_O='-o $@'
2091 LD_O='-o $@'
2092 LD_LIB='-l%'
2093 LD_PATH='-L'
2094 HOSTCC_C='-c'
2095 HOSTCC_O='-o $@'
2096 HOSTLD_O='-o $@'
2097
2098 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2099 host_libs='-lm'
2100 host_cflags_filter=echo
2101 host_ldflags_filter=echo
2102
2103 target_path='$(CURDIR)'
2104
2105 # since the object filename is not given with the -MM flag, the compiler
2106 # is only able to print the basename, and we must add the path ourselves
2107 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2108 DEPFLAGS='-MM'
2109
2110 # find source path
2111 if test -f configure; then
2112     source_path=.
2113 else
2114     source_path=$(cd $(dirname "$0"); pwd)
2115     echo "$source_path" | grep -q '[[:blank:]]' &&
2116         die "Out of tree builds are impossible with whitespace in source path."
2117     test -e "$source_path/config.h" &&
2118         die "Out of tree builds are impossible with config.h in source dir."
2119 fi
2120
2121 for v in "$@"; do
2122     r=${v#*=}
2123     l=${v%"$r"}
2124     r=$(sh_quote "$r")
2125     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2126 done
2127
2128 find_things(){
2129     thing=$1
2130     pattern=$2
2131     file=$source_path/$3
2132     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2133 }
2134
2135 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2136 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2137 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2138 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2139 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2140 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2141 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2142 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2143 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2144 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2145 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2146
2147 ALL_COMPONENTS="
2148     $BSF_LIST
2149     $DECODER_LIST
2150     $DEMUXER_LIST
2151     $ENCODER_LIST
2152     $FILTER_LIST
2153     $HWACCEL_LIST
2154     $INDEV_LIST
2155     $MUXER_LIST
2156     $OUTDEV_LIST
2157     $PARSER_LIST
2158     $PROTOCOL_LIST
2159 "
2160
2161 find_tests(){
2162     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
2163 }
2164
2165 LAVF_FATE_TESTS=$(find_tests lavf-fate)
2166 LAVF_TESTS=$(find_tests lavf)
2167 LAVFI_TESTS=$(find_tests lavfi)
2168 SEEK_TESTS=$(find_tests seek seek_)
2169
2170 ALL_TESTS="$LAVF_FATE_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS"
2171
2172 for n in $COMPONENT_LIST; do
2173     v=$(toupper ${n%s})_LIST
2174     eval enable \$$v
2175     eval ${n}_if_any="\$$v"
2176 done
2177
2178 enable $ARCH_EXT_LIST $ALL_TESTS
2179
2180 die_unknown(){
2181     echo "Unknown option \"$1\"."
2182     echo "See $0 --help for available options."
2183     exit 1
2184 }
2185
2186 show_list() {
2187     suffix=_$1
2188     shift
2189     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2190     exit 0
2191 }
2192
2193 rand_list(){
2194     IFS=', '
2195     set -- $*
2196     unset IFS
2197     for thing; do
2198         comp=${thing%:*}
2199         prob=${thing#$comp}
2200         prob=${prob#:}
2201         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2202         echo "prob ${prob:-0.5}"
2203         printf '%s\n' $comp
2204     done
2205 }
2206
2207 do_random(){
2208     action=$1
2209     shift
2210     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2211     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2212 }
2213
2214 for opt do
2215     optval="${opt#*=}"
2216     case "$opt" in
2217     --extra-ldflags=*) add_ldflags $optval
2218     ;;
2219     --extra-libs=*) add_extralibs $optval
2220     ;;
2221     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
2222     ;;
2223     --enable-debug=*) debuglevel="$optval"
2224     ;;
2225     --disable-everything)
2226     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2227     ;;
2228     --enable-random|--disable-random)
2229     action=${opt%%-random}
2230     do_random ${action#--} $COMPONENT_LIST
2231     ;;
2232     --enable-random=*|--disable-random=*)
2233     action=${opt%%-random=*}
2234     do_random ${action#--} $optval
2235     ;;
2236     --enable-*=*|--disable-*=*)
2237     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2238     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2239     eval list=\$$(toupper $thing)_LIST
2240     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2241     $action $(filter "$name" $list)
2242     ;;
2243     --enable-?*|--disable-?*)
2244     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2245     if is_in $option $COMPONENT_LIST; then
2246         test $action = disable && action=unset
2247         eval $action \$$(toupper ${option%s})_LIST
2248     elif is_in $option $CMDLINE_SELECT; then
2249         $action $option
2250     else
2251         die_unknown $opt
2252     fi
2253     ;;
2254     --list-*)
2255         NAME="${opt#--list-}"
2256         is_in $NAME $COMPONENT_LIST || die_unknown $opt
2257         NAME=${NAME%s}
2258         eval show_list $NAME \$$(toupper $NAME)_LIST
2259     ;;
2260     --help|-h) show_help
2261     ;;
2262     *)
2263     optname="${opt%%=*}"
2264     optname="${optname#--}"
2265     optname=$(echo "$optname" | sed 's/-/_/g')
2266     if is_in $optname $CMDLINE_SET; then
2267         eval $optname='$optval'
2268     elif is_in $optname $CMDLINE_APPEND; then
2269         append $optname "$optval"
2270     else
2271          die_unknown $opt
2272     fi
2273     ;;
2274     esac
2275 done
2276
2277 disabled logging && logfile=/dev/null
2278
2279 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2280 set >> $logfile
2281
2282 test -n "$cross_prefix" && enable cross_compile
2283
2284 if enabled cross_compile; then
2285     test -n "$arch" && test -n "$target_os" ||
2286         die "Must specify target arch and OS when cross-compiling"
2287 fi
2288
2289 set_default arch target_os postproc_version
2290
2291 # Check if we should build alternative libpostproc version instead of current
2292 if   test "$postproc_version" = $ALT_PP_VER; then
2293   LIBPOSTPROC_VERSION=$ALT_PP_VER
2294   LIBPOSTPROC_VERSION_MAJOR=$ALT_PP_VER_MAJOR
2295   LIBPOSTPROC_VERSION_MINOR=$ALT_PP_VER_MINOR
2296   LIBPOSTPROC_VERSION_MICRO=$ALT_PP_VER_MICRO
2297 elif test "$postproc_version" != current; then
2298   die "Invalid argument to --postproc-version. See --help output."
2299 fi
2300
2301 ar_default="${cross_prefix}${ar_default}"
2302 cc_default="${cross_prefix}${cc_default}"
2303 cxx_default="${cross_prefix}${cxx_default}"
2304 nm_default="${cross_prefix}${nm_default}"
2305 pkg_config_default="${cross_prefix}${pkg_config_default}"
2306 ranlib="${cross_prefix}${ranlib}"
2307 strip_default="${cross_prefix}${strip_default}"
2308
2309 sysinclude_default="${sysroot}/usr/include"
2310
2311 set_default cc cxx nm pkg_config strip sysinclude yasmexe
2312 enabled cross_compile || host_cc_default=$cc
2313 set_default host_cc
2314
2315 if ! $pkg_config --version >/dev/null 2>&1; then
2316     warn "$pkg_config not found, library detection may fail."
2317     pkg_config=false
2318 fi
2319
2320 exesuf() {
2321     case $1 in
2322         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2323     esac
2324 }
2325
2326 EXESUF=$(exesuf $target_os)
2327 HOSTEXESUF=$(exesuf $host_os)
2328
2329 # set temporary file name
2330 : ${TMPDIR:=$TEMPDIR}
2331 : ${TMPDIR:=$TMP}
2332 : ${TMPDIR:=/tmp}
2333
2334 if ! check_cmd mktemp -u XXXXXX; then
2335     # simple replacement for missing mktemp
2336     # NOT SAFE FOR GENERAL USE
2337     mktemp(){
2338         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2339     }
2340 fi
2341
2342 tmpfile(){
2343     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2344         (set -C; exec > $tmp) 2>/dev/null ||
2345         die "Unable to create temporary file in $TMPDIR."
2346     append TMPFILES $tmp
2347     eval $1=$tmp
2348 }
2349
2350 trap 'rm -f -- $TMPFILES' EXIT
2351
2352 tmpfile TMPASM .asm
2353 tmpfile TMPC   .c
2354 tmpfile TMPCPP .cpp
2355 tmpfile TMPE   $EXESUF
2356 tmpfile TMPH   .h
2357 tmpfile TMPO   .o
2358 tmpfile TMPS   .S
2359 tmpfile TMPSH  .sh
2360 tmpfile TMPV   .ver
2361
2362 unset -f mktemp
2363
2364 chmod +x $TMPE
2365
2366 # make sure we can execute files in $TMPDIR
2367 cat > $TMPSH 2>> $logfile <<EOF
2368 #! /bin/sh
2369 EOF
2370 chmod +x $TMPSH >> $logfile 2>&1
2371 if ! $TMPSH >> $logfile 2>&1; then
2372     cat <<EOF
2373 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2374 variable to another directory and make sure that it is not mounted noexec.
2375 EOF
2376     die "Sanity test failed."
2377 fi
2378
2379 msvc_flags(){
2380     for flag; do
2381         case $flag in
2382             -fomit-frame-pointer) echo -Oy ;;
2383             -g)                   echo -Z7 ;;
2384             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2385                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2386                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2387                                        -wd4996 ;;
2388             -std=c99)             ;;
2389             -fno-math-errno)      ;;
2390             -fno-common)          ;;
2391             -fno-signed-zeros)    ;;
2392             -lz)                  echo zlib.lib ;;
2393             -l*)                  echo ${flag#-l}.lib ;;
2394             *)                    echo $flag ;;
2395         esac
2396     done
2397 }
2398
2399 pgi_flags(){
2400     for flag; do
2401         case $flag in
2402             -fomit-frame-pointer) echo -Mnoframe ;;
2403             -g)                   echo -gopt ;;
2404             *)                    echo $flag ;;
2405         esac
2406     done
2407 }
2408
2409 suncc_flags(){
2410     for flag; do
2411         case $flag in
2412             -march=*|-mcpu=*)
2413                 case "${flag#*=}" in
2414                     native)                   echo -xtarget=native       ;;
2415                     v9|niagara)               echo -xarch=sparc          ;;
2416                     ultrasparc)               echo -xarch=sparcvis       ;;
2417                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2418                     i586|pentium)             echo -xchip=pentium        ;;
2419                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2420                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2421                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2422                     pentium4*)          echo -xtarget=pentium4           ;;
2423                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2424                     *-sse3)             echo -xarch=sse3                 ;;
2425                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2426                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2427                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2428                     k8|opteron|athlon64|athlon-fx)
2429                                               echo -xarch=sse2a          ;;
2430                     athlon*)                  echo -xarch=pentium_proa   ;;
2431                 esac
2432                 ;;
2433             -std=c99)             echo -xc99              ;;
2434             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2435             -fPIC)                echo -KPIC -xcode=pic32 ;;
2436             -W*,*)                echo $flag              ;;
2437             -f*-*|-W*)                                    ;;
2438             *)                    echo $flag              ;;
2439         esac
2440     done
2441 }
2442
2443 tms470_flags(){
2444     for flag; do
2445         case $flag in
2446             -march=*|-mcpu=*)
2447                 case "${flag#*=}" in
2448                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2449                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2450                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2451                     armv6*|arm11*)          echo -mv=6   ;;
2452                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2453                                             echo -mv=5e  ;;
2454                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2455                 esac
2456                 ;;
2457             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2458             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2459             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2460             -msoft-float)   echo --float_support=vfplib       ;;
2461             -O[0-3]|-mf=*)  echo $flag                        ;;
2462             -g)             echo -g -mn                       ;;
2463             -pds=*)         echo $flag                        ;;
2464             -D*|-I*)        echo $flag                        ;;
2465             --gcc|--abi=*)  echo $flag                        ;;
2466             -me)            echo $flag                        ;;
2467         esac
2468     done
2469 }
2470
2471 probe_cc(){
2472     pfx=$1
2473     _cc=$2
2474
2475     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2476     unset _ld_o _ldflags _ld_lib _ld_path
2477     unset _depflags _DEPCMD _DEPFLAGS
2478     _flags_filter=echo
2479
2480     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2481         _type=llvm_gcc
2482         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2483         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2484         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2485         _cflags_speed='-O3'
2486         _cflags_size='-Os'
2487     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2488         _type=gcc
2489         gcc_version=$($_cc --version | head -n1)
2490         gcc_basever=$($_cc -dumpversion)
2491         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2492         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2493         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2494         if ! $_cc -dumpversion | grep -q '^2\.'; then
2495             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2496         fi
2497         _cflags_speed='-O3'
2498         _cflags_size='-Os'
2499     elif $_cc --version 2>/dev/null | grep -q Intel; then
2500         _type=icc
2501         _ident=$($_cc --version | head -n1)
2502         _depflags='-MMD'
2503         _cflags_speed='-O3'
2504         _cflags_size='-Os'
2505         _cflags_noopt='-O1'
2506     elif $_cc -v 2>&1 | grep -q xlc; then
2507         _type=xlc
2508         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2509         _cflags_speed='-O5'
2510         _cflags_size='-O5 -qcompact'
2511     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2512         _type=ccc
2513         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2514         _DEPFLAGS='-M'
2515         debuglevel=3
2516         _ldflags='-Wl,-z,now' # calls to libots crash without this
2517         _cflags_speed='-fast'
2518         _cflags_size='-O1'
2519     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2520         test -d "$sysroot" || die "No valid sysroot specified."
2521         _type=armcc
2522         _ident=$($_cc --vsn | head -n1)
2523         armcc_conf="$PWD/armcc.conf"
2524         $_cc --arm_linux_configure                 \
2525              --arm_linux_config_file="$armcc_conf" \
2526              --configure_sysroot="$sysroot"        \
2527              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2528              die "Error creating armcc configuration file."
2529         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2530         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2531         as_default="${cross_prefix}gcc"
2532         _depflags='-MMD'
2533         _cflags_speed='-O3'
2534         _cflags_size='-Os'
2535     elif $_cc -version 2>/dev/null | grep -q TMS470; then
2536         _type=tms470
2537         _ident=$($_cc -version | head -n1 | tr -s ' ')
2538         _flags='--gcc --abi=eabi -me'
2539         _cflags='-D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__='
2540         _cc_e='-ppl -fe=$@'
2541         _cc_o='-fe=$@'
2542         as_default="${cross_prefix}gcc"
2543         ld_default="${cross_prefix}gcc"
2544         _depflags='-ppa -ppd=$(@:.o=.d)'
2545         _cflags_speed='-O3 -mf=5'
2546         _cflags_size='-O3 -mf=2'
2547         _flags_filter=tms470_flags
2548     elif $_cc -v 2>&1 | grep -q clang; then
2549         _type=clang
2550         _ident=$($_cc --version | head -n1)
2551         _depflags='-MMD'
2552         _cflags_speed='-O3'
2553         _cflags_size='-Os'
2554     elif $_cc -V 2>&1 | grep -q Sun; then
2555         _type=suncc
2556         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2557         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2558         _DEPFLAGS='-xM1 -xc99'
2559         _ldflags='-std=c99'
2560         _cflags_speed='-O5'
2561         _cflags_size='-O5 -xspace'
2562         _flags_filter=suncc_flags
2563     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2564         _type=pathscale
2565         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2566         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2567         _cflags_speed='-O2'
2568         _cflags_size='-Os'
2569         _flags_filter='filter_out -Wdisabled-optimization'
2570     elif $_cc -v 2>&1 | grep -q Open64; then
2571         _type=open64
2572         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2573         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2574         _cflags_speed='-O2'
2575         _cflags_size='-Os'
2576         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2577     elif $_cc -V 2>&1 | grep -q Portland; then
2578         _type=pgi
2579         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2580         opt_common='-alias=ansi -Mlre -Mpre'
2581         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2582         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2583         _cflags_noopt="-O1"
2584         _flags_filter=pgi_flags
2585     elif $_cc 2>&1 | grep -q Microsoft; then
2586         _type=msvc
2587         _ident=$($cc 2>&1 | head -n1)
2588         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2589         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2590         _cflags_speed="-O2"
2591         _cflags_size="-O1"
2592         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2593         if $_cc 2>&1 | grep -q Linker; then
2594             _ld_o='-out $@'
2595         else
2596             _ld_o='-Fe$@'
2597         fi
2598         _cc_o='-Fo $@'
2599         _cc_e='-P -Fi $@'
2600         _flags_filter=msvc_flags
2601         _ld_lib='lib%.a'
2602         _ld_path='-libpath:'
2603         _flags='-nologo'
2604         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2605         if [ $pfx = hostcc ]; then
2606             append _cflags -Dsnprintf=_snprintf
2607         fi
2608         disable aligned_stack
2609     fi
2610
2611     eval ${pfx}_type=\$_type
2612     eval ${pfx}_ident=\$_ident
2613 }
2614
2615 set_ccvars(){
2616     eval ${1}_C=\${_cc_c-\${${1}_C}}
2617     eval ${1}_E=\${_cc_e-\${${1}_E}}
2618     eval ${1}_O=\${_cc_o-\${${1}_O}}
2619
2620     if [ -n "$_depflags" ]; then
2621         eval ${1}_DEPFLAGS=\$_depflags
2622     else
2623         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2624         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2625         eval DEP${1}FLAGS=\$_flags
2626     fi
2627 }
2628
2629 probe_cc cc "$cc"
2630 cflags_filter=$_flags_filter
2631 cflags_speed=$_cflags_speed
2632 cflags_size=$_cflags_size
2633 cflags_noopt=$_cflags_noopt
2634 add_cflags $_flags $_cflags
2635 cc_ldflags=$_ldflags
2636 set_ccvars CC
2637
2638 probe_cc hostcc "$host_cc"
2639 host_cflags_filter=$_flags_filter
2640 add_host_cflags  $_flags $_cflags
2641 set_ccvars HOSTCC
2642
2643 test -n "$cc_type" && enable $cc_type ||
2644     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2645
2646 : ${as_default:=$cc}
2647 : ${dep_cc_default:=$cc}
2648 : ${ld_default:=$cc}
2649 : ${host_ld_default:=$host_cc}
2650 set_default ar as dep_cc ld host_ld
2651
2652 probe_cc as "$as"
2653 asflags_filter=$_flags_filter
2654 add_asflags $_flags $_cflags
2655 set_ccvars AS
2656
2657 probe_cc ld "$ld"
2658 ldflags_filter=$_flags_filter
2659 add_ldflags $_flags $_ldflags
2660 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2661 LD_O=${_ld_o-$LD_O}
2662 LD_LIB=${_ld_lib-$LD_LIB}
2663 LD_PATH=${_ld_path-$LD_PATH}
2664
2665 probe_cc hostld "$host_ld"
2666 host_ldflags_filter=$_flags_filter
2667 add_host_ldflags $_flags $_ldflags
2668 HOSTLD_O=${_ld_o-$HOSTLD_O}
2669
2670 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2671     probe_cc depcc "$dep_cc"
2672     CCDEP=${_DEPCMD:-$DEPCMD}
2673     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2674     DEPCCFLAGS=$_flags
2675 fi
2676
2677 add_cflags $extra_cflags
2678 add_cxxflags $extra_cxxflags
2679 add_asflags $extra_cflags
2680
2681 if test -n "$sysroot"; then
2682     case "$cc_type" in
2683         gcc|llvm_gcc|clang)
2684             add_cppflags --sysroot="$sysroot"
2685             add_ldflags --sysroot="$sysroot"
2686         ;;
2687         tms470)
2688             add_cppflags -I"$sysinclude"
2689             add_ldflags  --sysroot="$sysroot"
2690         ;;
2691     esac
2692 fi
2693
2694 if test "$cpu" = host; then
2695     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2696
2697     case "$cc_type" in
2698         gcc|llvm_gcc)
2699             check_native(){
2700                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2701                 sed -n "/cc1.*$1=/{
2702                             s/.*$1=\\([^ ]*\\).*/\\1/
2703                             p
2704                             q
2705                         }" $TMPE
2706             }
2707             cpu=$(check_native -march || check_native -mcpu)
2708         ;;
2709     esac
2710
2711     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2712 fi
2713
2714 # Deal with common $arch aliases
2715 case "$arch" in
2716     arm*|iPad*)
2717         arch="arm"
2718     ;;
2719     mips|mipsel|IP*)
2720         arch="mips"
2721     ;;
2722     mips64*)
2723         arch="mips"
2724         subarch="mips64"
2725     ;;
2726     parisc|hppa)
2727         arch="parisc"
2728     ;;
2729     parisc64|hppa64)
2730         arch="parisc"
2731         subarch="parisc64"
2732     ;;
2733     "Power Macintosh"|ppc|powerpc|ppc64|powerpc64)
2734         arch="ppc"
2735     ;;
2736     s390|s390x)
2737         arch="s390"
2738     ;;
2739     sh4|sh)
2740         arch="sh4"
2741     ;;
2742     sun4u|sparc64)
2743         arch="sparc"
2744         subarch="sparc64"
2745     ;;
2746     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2747         arch="x86"
2748     ;;
2749 esac
2750
2751 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2752 enable $arch
2753
2754 # Add processor-specific flags
2755 if test "$cpu" = generic; then
2756     : do nothing
2757 elif enabled ppc; then
2758
2759     case $(tolower $cpu) in
2760         601|ppc601|powerpc601)
2761             cpuflags="-mcpu=601"
2762             disable altivec
2763         ;;
2764         603*|ppc603*|powerpc603*)
2765             cpuflags="-mcpu=603"
2766             disable altivec
2767         ;;
2768         604*|ppc604*|powerpc604*)
2769             cpuflags="-mcpu=604"
2770             disable altivec
2771         ;;
2772         g3|75*|ppc75*|powerpc75*)
2773             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2774             disable altivec
2775         ;;
2776         g4|745*|ppc745*|powerpc745*)
2777             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2778         ;;
2779         74*|ppc74*|powerpc74*)
2780             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2781         ;;
2782         g5|970|ppc970|powerpc970)
2783             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2784         ;;
2785         power[3-7]*)
2786             cpuflags="-mcpu=$cpu -mpowerpc-gfxopt -mpowerpc64"
2787         ;;
2788         cell)
2789             cpuflags="-mcpu=cell"
2790             enable ldbrx
2791         ;;
2792         e500mc)
2793             cpuflags="-mcpu=e500mc"
2794             disable altivec
2795         ;;
2796         e500v2)
2797             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2798             disable altivec
2799         ;;
2800         e500)
2801             cpuflags="-mcpu=8540 -mhard-float"
2802             disable altivec
2803         ;;
2804     esac
2805
2806 elif enabled x86; then
2807
2808     case $cpu in
2809         i[345]86|pentium)
2810             cpuflags="-march=$cpu"
2811             disable mmx
2812         ;;
2813         # targets that do NOT support conditional mov (cmov)
2814         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2815             cpuflags="-march=$cpu"
2816             disable cmov
2817         ;;
2818         # targets that do support conditional mov (cmov)
2819         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom|bdver*)
2820             cpuflags="-march=$cpu"
2821             enable cmov
2822             enable fast_cmov
2823         ;;
2824         # targets that do support conditional mov but on which it's slow
2825         pentium4|pentium4m|prescott|nocona)
2826             cpuflags="-march=$cpu"
2827             enable cmov
2828             disable fast_cmov
2829         ;;
2830     esac
2831
2832 elif enabled sparc; then
2833
2834     case $cpu in
2835         niagara)
2836             cpuflags="-mcpu=$cpu"
2837             disable vis
2838         ;;
2839         sparc64)
2840             cpuflags="-mcpu=v9"
2841         ;;
2842     esac
2843
2844 elif enabled arm; then
2845
2846     case $cpu in
2847         armv*)
2848             cpuflags="-march=$cpu"
2849             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2850         ;;
2851         *)
2852             cpuflags="-mcpu=$cpu"
2853             case $cpu in
2854                 cortex-a*)                               subarch=armv7a  ;;
2855                 cortex-r*)                               subarch=armv7r  ;;
2856                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2857                 arm11*)                                  subarch=armv6   ;;
2858                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2859                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2860             esac
2861         ;;
2862     esac
2863
2864 elif enabled alpha; then
2865
2866     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2867
2868 elif enabled bfin; then
2869
2870     cpuflags="-mcpu=$cpu"
2871
2872 elif enabled mips; then
2873
2874     cpuflags="-march=$cpu"
2875
2876     case $cpu in
2877         24kc)
2878             disable mipsfpu
2879             disable mipsdspr1
2880             disable mipsdspr2
2881         ;;
2882         24kf*)
2883             disable mipsdspr1
2884             disable mipsdspr2
2885         ;;
2886         24kec|34kc|1004kc)
2887             disable mipsfpu
2888             disable mipsdspr2
2889         ;;
2890         24kef*|34kf*|1004kf*)
2891             disable mipsdspr2
2892         ;;
2893         74kc)
2894             disable mipsfpu
2895         ;;
2896     esac
2897
2898 elif enabled avr32; then
2899
2900     case $cpu in
2901         ap7[02]0[0-2])
2902             subarch="avr32_ap"
2903             cpuflags="-mpart=$cpu"
2904         ;;
2905         ap)
2906             subarch="avr32_ap"
2907             cpuflags="-march=$cpu"
2908         ;;
2909         uc3[ab]*)
2910             subarch="avr32_uc"
2911             cpuflags="-mcpu=$cpu"
2912         ;;
2913         uc)
2914             subarch="avr32_uc"
2915             cpuflags="-march=$cpu"
2916         ;;
2917     esac
2918
2919 fi
2920
2921 add_cflags $cpuflags
2922 add_asflags $cpuflags
2923
2924 # compiler sanity check
2925 check_exec <<EOF
2926 int main(void){ return 0; }
2927 EOF
2928 if test "$?" != 0; then
2929     echo "$cc is unable to create an executable file."
2930     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2931         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2932         echo "Only do this if you know what cross compiling means."
2933     fi
2934     die "C compiler test failed."
2935 fi
2936
2937 add_cppflags -D_ISOC99_SOURCE
2938 add_cxxflags -D__STDC_CONSTANT_MACROS
2939 check_cflags -std=c99
2940 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2941 #include <stdlib.h>
2942 EOF
2943 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2944 #include <stdlib.h>
2945 EOF
2946
2947 check_host_cflags -std=c99
2948 check_host_cflags -Wall
2949
2950 case "$arch" in
2951     alpha|ia64|mips|parisc|sparc)
2952         spic=$shared
2953     ;;
2954     x86)
2955         subarch="x86_32"
2956         check_code cc "" "int test[(int)sizeof(char*) - 7]" && subarch="x86_64"
2957         if test "$subarch" = "x86_64"; then
2958             spic=$shared
2959         fi
2960     ;;
2961     ppc)
2962         check_cc <<EOF && subarch="ppc64"
2963         int test[(int)sizeof(char*) - 7];
2964 EOF
2965     ;;
2966 esac
2967
2968 enable $subarch
2969 enabled spic && enable pic
2970
2971 # OS specific
2972 case $target_os in
2973     haiku)
2974         prefix_default="/boot/common"
2975         network_extralibs="-lnetwork"
2976         host_libs=
2977         ;;
2978     sunos)
2979         FFSERVERLDFLAGS=""
2980         SHFLAGS='-shared -Wl,-h,$$(@F)'
2981         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2982         network_extralibs="-lsocket -lnsl"
2983         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2984         # When using suncc to build, the Solaris linker will mark
2985         # an executable with each instruction set encountered by
2986         # the Solaris assembler.  As our libraries contain their own
2987         # guards for processor-specific code, instead suppress
2988         # generation of the HWCAPS ELF section on Solaris x86 only.
2989         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2990         nm_opts='-P -g'
2991         ;;
2992     netbsd)
2993         disable symver
2994         oss_indev_extralibs="-lossaudio"
2995         oss_outdev_extralibs="-lossaudio"
2996         ;;
2997     openbsd|bitrig)
2998         # On OpenBSD 4.5. the compiler does not use PIC unless
2999         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3000         # however the generated executable will not do anything
3001         # (simply quits with exit-code 1, no crash, no output).
3002         # Thus explicitly enable PIC here.
3003         enable pic
3004         disable symver
3005         SHFLAGS='-shared'
3006         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3007         SLIB_INSTALL_LINKS=
3008         oss_indev_extralibs="-lossaudio"
3009         oss_outdev_extralibs="-lossaudio"
3010         ;;
3011     dragonfly)
3012         disable symver
3013         ;;
3014     freebsd)
3015         ;;
3016     bsd/os)
3017         add_extralibs -lpoll -lgnugetopt
3018         strip="strip -d"
3019         ;;
3020     darwin)
3021         gas="gas-preprocessor.pl $cc"
3022         enabled ppc && add_asflags -force_cpusubtype_ALL
3023         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3024         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3025         strip="${strip} -x"
3026         add_ldflags -Wl,-dynamic,-search_paths_first
3027         SLIBSUF=".dylib"
3028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3030         FFSERVERLDFLAGS=-Wl,-bind_at_load
3031         objformat="macho"
3032         enabled x86_64 && objformat="macho64"
3033         enabled_any pic shared ||
3034             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3035         ;;
3036     mingw32*)
3037         if test $target_os = "mingw32ce"; then
3038             disable network
3039         else
3040             target_os=mingw32
3041         fi
3042         LIBTARGET=i386
3043         if enabled x86_64; then
3044             LIBTARGET="i386:x86-64"
3045         elif enabled arm; then
3046             LIBTARGET=arm-wince
3047         fi
3048         shlibdir_default="$bindir_default"
3049         SLIBPREF=""
3050         SLIBSUF=".dll"
3051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3053         dlltool="${cross_prefix}dlltool"
3054         if check_cmd lib.exe -list; then
3055             SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3056             if enabled x86_64; then
3057                 LIBTARGET=x64
3058             fi
3059         elif check_cmd $dlltool --version; then
3060             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3061         fi
3062         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3063         SLIB_INSTALL_LINKS=
3064         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3065         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3066         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3067         objformat="win32"
3068         ranlib=:
3069         enable dos_paths
3070         check_cflags -fno-common
3071         add_cppflags -U__STRICT_ANSI__
3072         ;;
3073     cygwin*)
3074         target_os=cygwin
3075         shlibdir_default="$bindir_default"
3076         SLIBPREF="cyg"
3077         SLIBSUF=".dll"
3078         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3079         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3081         SLIB_INSTALL_LINKS=
3082         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3083         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3084         objformat="win32"
3085         enable dos_paths
3086         check_cflags -fno-common
3087         add_cppflags -U__STRICT_ANSI__
3088         ;;
3089     *-dos|freedos|opendos)
3090         network_extralibs="-lsocket"
3091         objformat="coff"
3092         enable dos_paths
3093         add_cppflags -U__STRICT_ANSI__
3094         ;;
3095     linux)
3096         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3097         enable dv1394
3098         ;;
3099     irix*)
3100         target_os=irix
3101         ranlib="echo ignoring ranlib"
3102         ;;
3103     os/2*)
3104         strip="lxlite -CS"
3105         ln_s="cp -f"
3106         objformat="aout"
3107         add_cppflags -D_GNU_SOURCE
3108         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3109         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3110         FFSERVERLDFLAGS=""
3111         LIBSUF="_s.a"
3112         SLIBPREF=""
3113         SLIBSUF=".dll"
3114         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3115         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3116         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3117           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3118           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3119           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3120           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3121           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3122         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3123           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3124         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3125         enable dos_paths
3126         enable_weak os2threads
3127         ;;
3128     gnu/kfreebsd)
3129         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
3130         ;;
3131     gnu)
3132         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3133         ;;
3134     qnx)
3135         add_cppflags -D_QNX_SOURCE
3136         network_extralibs="-lsocket"
3137         ;;
3138     symbian)
3139         SLIBSUF=".dll"
3140         enable dos_paths
3141         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3142         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3143         add_ldflags -Wl,--target1-abs,--no-undefined \
3144                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3145                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3146         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3147                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3148                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3149         ;;
3150     none)
3151         ;;
3152     *)
3153         die "Unknown OS '$target_os'."
3154         ;;
3155 esac
3156
3157 # determine libc flavour
3158
3159 if check_cpp_condition features.h "defined __UCLIBC__"; then
3160     libc_type=uclibc
3161 elif check_cpp_condition features.h "defined __GLIBC__"; then
3162     libc_type=glibc
3163 elif check_header _mingw.h; then
3164     libc_type=mingw
3165     check_cpp_condition _mingw.h \
3166         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3167             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3168         die "ERROR: MinGW runtime version must be >= 3.15."
3169 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3170     libc_type=newlib
3171 elif check_func_headers stdlib.h _get_doserrno; then
3172     libc_type=msvcrt
3173     add_cflags -Dstrtod=avpriv_strtod
3174     add_cflags -Dsnprintf=avpriv_snprintf   \
3175                -D_snprintf=avpriv_snprintf  \
3176                -Dvsnprintf=avpriv_vsnprintf
3177 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3178     libc_type=klibc
3179 fi
3180
3181 test -n "$libc_type" && enable $libc_type
3182
3183 esc(){
3184     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3185 }
3186
3187 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3188
3189 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3190
3191 set_default $PATHS_LIST
3192
3193 # we need to build at least one lib type
3194 if ! enabled_any static shared; then
3195     cat <<EOF
3196 At least one library type must be built.
3197 Specify --enable-static to build the static libraries or --enable-shared to
3198 build the shared libraries as well. To only build the shared libraries specify
3199 --disable-static in addition to --enable-shared.
3200 EOF
3201     exit 1;
3202 fi
3203
3204 die_license_disabled() {
3205     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3206 }
3207
3208 die_license_disabled_gpl() {
3209     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3210 }
3211
3212 die_license_disabled gpl libcdio
3213 die_license_disabled gpl libutvideo
3214 die_license_disabled gpl libx264
3215 die_license_disabled gpl libxavs
3216 die_license_disabled gpl libxvid
3217 die_license_disabled gpl x11grab
3218
3219 die_license_disabled nonfree libaacplus
3220 die_license_disabled nonfree libfaac
3221 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3222 enabled gpl && die_license_disabled_gpl nonfree openssl
3223
3224 die_license_disabled version3 libopencore_amrnb
3225 die_license_disabled version3 libopencore_amrwb
3226 die_license_disabled version3 libvo_aacenc
3227 die_license_disabled version3 libvo_amrwbenc
3228
3229 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3230
3231 disabled optimizations || check_cflags -fomit-frame-pointer
3232
3233 enable_pic() {
3234     enable pic
3235     add_cppflags -DPIC
3236     add_cflags   -fPIC
3237     add_asflags  -fPIC
3238 }
3239
3240 enabled pic && enable_pic
3241
3242 check_cc <<EOF || die "Symbol mangling check failed."
3243 int ff_extern;
3244 EOF
3245 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3246 extern_prefix=${sym%%ff_extern*}
3247
3248 check_cc <<EOF && enable_weak inline_asm
3249 void foo(void) { __asm__ volatile ("" ::); }
3250 EOF
3251
3252 _restrict=
3253 for restrict_keyword in restrict __restrict__ __restrict; do
3254     check_cc <<EOF && _restrict=$restrict_keyword && break
3255 void foo(char * $restrict_keyword p);
3256 EOF
3257 done
3258
3259 check_cc <<EOF && enable attribute_packed
3260 struct { int x; } __attribute__((packed)) x;
3261 EOF
3262
3263 check_cc <<EOF && enable attribute_may_alias
3264 union { int x; } __attribute__((may_alias)) x;
3265 EOF
3266
3267 check_cc <<EOF || die "endian test failed"
3268 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3269 EOF
3270 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3271
3272 if enabled alpha; then
3273
3274     check_cflags -mieee
3275
3276 elif enabled arm; then
3277
3278     enabled thumb && check_cflags -mthumb || check_cflags -marm
3279     nogas=die
3280
3281     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3282         enable vfp_args
3283     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3284         case "${cross_prefix:-$cc}" in
3285             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3286             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3287 __asm__ (".eabi_attribute 28, 1");
3288 int main(void) { return 0; }
3289 EOF
3290         esac
3291         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3292     fi
3293
3294     enabled armv5te && check_inline_asm armv5te '"qadd r0, r0, r0"'
3295     enabled armv6   && check_inline_asm armv6   '"sadd16 r0, r0, r0"'
3296     enabled armv6t2 && check_inline_asm armv6t2 '"movt r0, #0"'
3297     enabled armvfp  && check_inline_asm armvfp  '"fadds s0, s0, s0"'
3298     enabled neon    && check_inline_asm neon    '"vadd.i16 q0, q0, q0"'
3299     enabled vfpv3   && check_inline_asm vfpv3   '"vmov.f32 s0, #1.0"'
3300
3301     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3302     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3303
3304     enabled_all armv6t2 shared !pic && enable_pic
3305
3306 elif enabled mips; then
3307
3308     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3309     enabled mmi && check_inline_asm mmi '"lq $2, 0($2)"'
3310     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3311      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3312     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3313      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3314     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3315      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3316     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3317      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3318
3319 elif enabled ppc; then
3320
3321     enable local_aligned_8 local_aligned_16
3322
3323     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3324     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3325     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3326     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3327
3328     # AltiVec flags: The FSF version of GCC differs from the Apple version
3329     if enabled altivec; then
3330         nogas=warn
3331         check_cflags -maltivec -mabi=altivec &&
3332         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3333         check_cflags -faltivec
3334
3335         # check if our compiler supports Motorola AltiVec C API
3336         check_cc <<EOF || disable altivec
3337 $inc_altivec_h
3338 int main(void) {
3339     vector signed int v1 = (vector signed int) { 0 };
3340     vector signed int v2 = (vector signed int) { 1 };
3341     v1 = vec_add(v1, v2);
3342     return 0;
3343 }
3344 EOF
3345
3346         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3347     fi
3348
3349 elif enabled sparc; then
3350
3351     enabled vis &&
3352         check_inline_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
3353         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
3354
3355 elif enabled x86; then
3356
3357     check_code ld immintrin.h "return __xgetbv(0)" "cc" && enable xgetbv
3358     check_code ld intrin.h "int info[4]; __cpuid(info, 0)" "cc" && enable cpuid
3359     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3360     check_code ld intrin.h "unsigned int x = __readeflags()" "cc" && enable rweflags
3361
3362     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3363
3364     enable local_aligned_8 local_aligned_16
3365
3366     # check whether EBP is available on x86
3367     # As 'i' is stored on the stack, this program will crash
3368     # if the base pointer is used to access it because the
3369     # base pointer is cleared in the inline assembly code.
3370     check_exec_crash <<EOF && enable ebp_available
3371     volatile int i=0;
3372     __asm__ volatile (
3373         "xorl %%ebp, %%ebp"
3374     ::: "%ebp");
3375     return i;
3376 EOF
3377
3378     # check whether EBX is available on x86
3379     check_inline_asm ebx_available '""::"b"(0)' &&
3380         check_inline_asm ebx_available '"":::"%ebx"'
3381
3382     # check whether xmm clobbers are supported
3383     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3384
3385     # check whether binutils is new enough to compile SSSE3/MMXEXT
3386     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3387     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3388
3389     if ! disabled_any asm mmx yasm; then
3390         if check_cmd $yasmexe --version; then
3391             enabled x86_64 && yasm_extra="-m amd64"
3392             yasm_debug="-g dwarf2"
3393         elif check_cmd nasm -v; then
3394             yasmexe=nasm
3395             yasm_debug="-g -F dwarf"
3396             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3397         fi
3398
3399         YASMFLAGS="-f $objformat $yasm_extra"
3400         enabled pic               && append YASMFLAGS "-DPIC"
3401         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3402         case "$objformat" in
3403             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3404         esac
3405
3406         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3407             die "yasm not found, use --disable-yasm for a crippled build"
3408         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3409         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3410         check_yasm "CPU amdnop" && enable cpunop
3411     fi
3412
3413     case "$cpu" in
3414         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3415             disable fast_clz
3416         ;;
3417     esac
3418
3419 fi
3420
3421 if enabled asm; then
3422     as=${gas:=$as}
3423     check_inline_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
3424         $nogas "GNU assembler not found, install gas-preprocessor"
3425 fi
3426
3427 check_ldflags -Wl,--as-needed
3428
3429 if check_func dlopen; then
3430     ldl=
3431 elif check_func dlopen -ldl; then
3432     ldl=-ldl
3433 fi
3434
3435 if enabled network; then
3436     check_type "sys/types.h sys/socket.h" socklen_t
3437     check_type netdb.h "struct addrinfo"
3438     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3439     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3440     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3441     check_type netinet/in.h "struct sockaddr_in6"
3442     check_type poll.h "struct pollfd"
3443     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3444     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3445     check_type netinet/sctp.h "struct sctp_event_subscribe"
3446     check_func getaddrinfo $network_extralibs
3447     # Prefer arpa/inet.h over winsock2
3448     if check_header arpa/inet.h ; then
3449         check_func closesocket
3450     elif check_header winsock2.h ; then
3451         check_func_headers winsock2.h closesocket -lws2 &&
3452             network_extralibs="-lws2" ||
3453         { check_func_headers winsock2.h closesocket -lws2_32 &&
3454             network_extralibs="-lws2_32"; }
3455         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3456         check_type ws2tcpip.h socklen_t
3457         check_type ws2tcpip.h "struct addrinfo"
3458         check_type ws2tcpip.h "struct group_source_req"
3459         check_type ws2tcpip.h "struct ip_mreq_source"
3460         check_type ws2tcpip.h "struct ipv6_mreq"
3461         check_type winsock2.h "struct pollfd"
3462         check_type ws2tcpip.h "struct sockaddr_in6"
3463         check_type ws2tcpip.h "struct sockaddr_storage"
3464         check_struct winsock2.h "struct sockaddr" sa_len
3465     else
3466         disable network
3467     fi
3468 fi
3469
3470 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3471 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3472
3473 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3474 check_func  fcntl
3475 check_func  fork
3476 check_func  gethrtime
3477 check_func  getopt
3478 check_func  getrusage
3479 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3480 check_func  gettimeofday
3481 check_func  inet_aton $network_extralibs
3482 check_func  isatty
3483 check_func  localtime_r
3484 check_func  ${malloc_prefix}memalign            && enable memalign
3485 check_func  mkstemp
3486 check_func  mmap
3487 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3488 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3489 check_func  setrlimit
3490 check_func  strerror_r
3491 check_func  sched_getaffinity
3492 check_func  sysconf
3493 check_func  sysctl
3494 check_func  usleep
3495 check_func_headers conio.h kbhit
3496 check_func_headers windows.h PeekNamedPipe
3497 check_func_headers io.h setmode
3498 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3499 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3500 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3501 check_func_headers windows.h GetProcessAffinityMask
3502 check_func_headers windows.h GetProcessTimes
3503 check_func_headers windows.h GetSystemTimeAsFileTime
3504 check_func_headers windows.h MapViewOfFile
3505 check_func_headers windows.h Sleep
3506 check_func_headers windows.h VirtualAlloc
3507 check_func_headers glob.h glob
3508
3509 check_header dlfcn.h
3510 check_header dxva.h
3511 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3512 check_header io.h
3513 check_header libcrystalhd/libcrystalhd_if.h
3514 check_header malloc.h
3515 check_header poll.h
3516 check_header sys/mman.h
3517 check_header sys/param.h
3518 check_header sys/resource.h
3519 check_header sys/select.h
3520 check_header sys/time.h
3521 check_header termios.h
3522 check_header unistd.h
3523 check_header vdpau/vdpau.h
3524 check_header vdpau/vdpau_x11.h
3525 check_header windows.h
3526 check_header X11/extensions/XvMClib.h
3527 check_header asm/types.h
3528
3529 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3530 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3531
3532 # check for VDA header
3533 if ! disabled vda; then
3534     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3535         enable vda
3536         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3537     fi
3538 fi
3539
3540 if ! disabled w32threads && ! enabled pthreads; then
3541     check_func _beginthreadex && enable w32threads
3542 fi
3543
3544 # check for some common methods of building with pthread support
3545 # do this before the optional library checks as some of them require pthreads
3546 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3547     enable pthreads
3548     if check_func pthread_create; then
3549         :
3550     elif check_func pthread_create -pthread; then
3551         add_cflags -pthread
3552         add_extralibs -pthread
3553     elif check_func pthread_create -pthreads; then
3554         add_cflags -pthreads
3555         add_extralibs -pthreads
3556     elif check_func pthread_create -lpthreadGC2; then
3557         add_extralibs -lpthreadGC2
3558     elif ! check_lib pthread.h pthread_create -lpthread; then
3559         disable pthreads
3560     fi
3561 fi
3562
3563 for thread in $THREADS_LIST; do
3564     if enabled $thread; then
3565         test -n "$thread_type" &&
3566             die "ERROR: Only one thread type must be selected." ||
3567             thread_type="$thread"
3568     fi
3569 done
3570
3571 if enabled pthreads; then
3572   check_func pthread_cancel
3573 fi
3574
3575 check_lib math.h sin -lm && LIBM="-lm"
3576 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3577 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3578
3579 check_mathfunc cbrtf
3580 check_mathfunc exp2
3581 check_mathfunc exp2f
3582 check_mathfunc isinf
3583 check_mathfunc isnan
3584 check_mathfunc llrint
3585 check_mathfunc llrintf
3586 check_mathfunc log2
3587 check_mathfunc log2f
3588 check_mathfunc lrint
3589 check_mathfunc lrintf
3590 check_mathfunc rint
3591 check_mathfunc round
3592 check_mathfunc roundf
3593 check_mathfunc trunc
3594 check_mathfunc truncf
3595
3596 # these are off by default, so fail if requested and not available
3597 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3598 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3599 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3600 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3601 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3602 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3603 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3604 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3605 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3606                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3607                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3608 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3609 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3610 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3611 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
3612 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3613 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3614 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3615 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3616 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3617 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3618 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3619 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3620 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3621 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3622 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3623 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3624 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3625 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3626 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3627 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3628 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3629     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3630     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3631 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3632 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3633                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3634                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3635 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3636 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3637 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3638 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3639 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3640 enabled libvpx     && {
3641     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3642                                 die "ERROR: libvpx decoder must be installed and version must be >=0.9.1"; }
3643     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3644                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3645 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3646                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3647                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3648 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3649 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3650 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3651                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3652                         die "ERROR: openal not found"; } &&
3653                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3654                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3655 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3656                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3657                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3658                         die "ERROR: openssl not found"; }
3659
3660 if enabled gnutls; then
3661     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3662     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3663 fi
3664
3665 # libdc1394 check
3666 if enabled libdc1394; then
3667     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3668         enable libdc1394_2; } ||
3669     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3670         enable libdc1394_1; } ||
3671     die "ERROR: No version of libdc1394 found "
3672 fi
3673
3674 SDL_CONFIG="${cross_prefix}sdl-config"
3675 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3676     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3677     enable sdl &&
3678     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3679 else
3680   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3681     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3682     sdl_libs=$("${SDL_CONFIG}" --libs)
3683     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3684     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3685     enable sdl &&
3686     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3687   fi
3688 fi
3689 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3690
3691 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3692 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3693 perl --version > /dev/null 2>&1 && enable perl || disable perl
3694 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3695
3696 check_header linux/fb.h
3697 check_header linux/videodev.h
3698 check_header linux/videodev2.h
3699 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3700
3701 check_header sys/videoio.h
3702
3703 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3704 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3705 # w32api 3.12 had it defined wrong
3706 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3707
3708 check_type "dshow.h" IBaseFilter
3709
3710 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3711 { check_header dev/bktr/ioctl_meteor.h &&
3712   check_header dev/bktr/ioctl_bt848.h; } ||
3713 { check_header machine/ioctl_meteor.h &&
3714   check_header machine/ioctl_bt848.h; } ||
3715 { check_header dev/video/meteor/ioctl_meteor.h &&
3716   check_header dev/video/bktr/ioctl_bt848.h; } ||
3717 check_header dev/ic/bt8xx.h
3718
3719 check_header sndio.h
3720 if check_struct sys/soundcard.h audio_buf_info bytes; then
3721     enable_safe sys/soundcard.h
3722 else
3723     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3724     #include <sys/soundcard.h>
3725     audio_buf_info abc;
3726 EOF
3727 fi
3728 check_header soundcard.h
3729
3730 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3731
3732 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3733     check_func jack_port_get_latency_range -ljack
3734
3735 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3736
3737 enabled libcdio &&
3738     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
3739
3740 enabled x11grab                                           &&
3741 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3742 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3743 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3744
3745 if ! disabled vaapi; then
3746     check_lib va/va.h vaInitialize -lva && {
3747         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3748         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3749     } || disable vaapi
3750 fi
3751
3752 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3753 check_cpp_condition \
3754     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3755     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3756       disable vdpau; }
3757 fi
3758
3759 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3760 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3761 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"
3762
3763 # add some useful compiler flags if supported
3764 check_cflags -Wdeclaration-after-statement
3765 check_cflags -Wall
3766 check_cflags -Wno-parentheses
3767 check_cflags -Wno-switch
3768 check_cflags -Wno-format-zero-length
3769 check_cflags -Wdisabled-optimization
3770 check_cflags -Wpointer-arith
3771 check_cflags -Wredundant-decls
3772 check_cflags -Wno-pointer-sign
3773 check_cflags -Wwrite-strings
3774 check_cflags -Wtype-limits
3775 check_cflags -Wundef
3776 check_cflags -Wmissing-prototypes
3777 check_cflags -Wno-pointer-to-int-cast
3778 check_cflags -Wstrict-prototypes
3779 enabled extra_warnings && check_cflags -Winline
3780
3781 # add some linker flags
3782 check_ldflags -Wl,--warn-common
3783 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3784 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3785
3786 enabled xmm_clobber_test &&
3787     check_ldflags -Wl,--wrap,avcodec_open2              \
3788                   -Wl,--wrap,avcodec_decode_audio4      \
3789                   -Wl,--wrap,avcodec_decode_video2      \
3790                   -Wl,--wrap,avcodec_decode_subtitle2   \
3791                   -Wl,--wrap,avcodec_encode_audio2      \
3792                   -Wl,--wrap,avcodec_encode_video       \
3793                   -Wl,--wrap,avcodec_encode_subtitle    \
3794                   -Wl,--wrap,sws_scale ||
3795     disable xmm_clobber_test
3796
3797 echo "X{};" > $TMPV
3798 if test_ldflags -Wl,--version-script,$TMPV; then
3799     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3800     check_cc <<EOF && enable symver_asm_label
3801 void ff_foo(void) __asm__ ("av_foo@VERSION");
3802 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3803 EOF
3804     check_cc <<EOF && enable symver_gnu_asm
3805 __asm__(".symver ff_foo,av_foo@VERSION");
3806 void ff_foo(void) {}
3807 EOF
3808 fi
3809
3810 if [ -n "$optflags" ]; then
3811     add_cflags $optflags
3812 elif enabled small; then
3813     add_cflags $cflags_size
3814 elif enabled optimizations; then
3815     add_cflags $cflags_speed
3816 else
3817     add_cflags $cflags_noopt
3818 fi
3819 check_cflags -fno-math-errno
3820 check_cflags -fno-signed-zeros
3821 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
3822 int x;
3823 EOF
3824
3825
3826 if enabled icc; then
3827     # Just warnings, no remarks
3828     check_cflags -w1
3829     # -wd: Disable following warnings
3830     # 144, 167, 556: -Wno-pointer-sign
3831     # 1292: attribute "foo" ignored
3832     # 1419: external declaration in primary source file
3833     # 10006: ignoring unknown option -fno-signed-zeros
3834     # 10148: ignoring unknown option -Wno-parentheses
3835     # 10156: ignoring option '-W'; no argument required
3836     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3837     # 11030: Warning unknown option --as-needed
3838     # 10156: ignoring option '-export'; no argument required
3839     check_ldflags -wd10156,11030
3840     # Allow to compile with optimizations
3841     check_ldflags -march=$cpu
3842     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3843     enable ebp_available
3844     if enabled x86_32; then
3845         icc_version=$($cc -dumpversion)
3846         test ${icc_version%%.*} -ge 11 &&
3847             check_cflags -falign-stack=maintain-16-byte ||
3848             disable aligned_stack
3849     fi
3850 elif enabled ccc; then
3851     # disable some annoying warnings
3852     add_cflags -msg_disable cvtu32to64
3853     add_cflags -msg_disable embedcomment
3854     add_cflags -msg_disable needconstext
3855     add_cflags -msg_disable nomainieee
3856     add_cflags -msg_disable ptrmismatch1
3857     add_cflags -msg_disable unreachcode
3858 elif enabled gcc; then
3859     check_cflags -fno-tree-vectorize
3860     check_cflags -Werror=implicit-function-declaration
3861     check_cflags -Werror=missing-prototypes
3862 elif enabled llvm_gcc; then
3863     check_cflags -mllvm -stack-alignment=16
3864 elif enabled clang; then
3865     check_cflags -mllvm -stack-alignment=16
3866     check_cflags -Qunused-arguments
3867 elif enabled armcc; then
3868     # 2523: use of inline assembler is deprecated
3869     add_cflags -W${armcc_opt},--diag_suppress=2523
3870     add_cflags -W${armcc_opt},--diag_suppress=1207
3871     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3872     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3873     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3874     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3875 elif enabled tms470; then
3876     add_cflags -pds=824 -pds=837
3877 elif enabled pathscale; then
3878     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3879 fi
3880
3881 enabled_any $THREADS_LIST      && enable threads
3882
3883 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3884
3885 check_deps $CONFIG_LIST       \
3886            $CONFIG_EXTRA      \
3887            $HAVE_LIST         \
3888            $ALL_COMPONENTS    \
3889            $ALL_TESTS         \
3890
3891
3892 if test $target_os = "haiku"; then
3893     disable memalign
3894     disable posix_memalign
3895 fi
3896
3897 ! enabled_any memalign posix_memalign aligned_malloc &&
3898     enabled_any $need_memalign && enable memalign_hack
3899
3900 # add_dep lib dep
3901 # -> enable ${lib}_deps_${dep}
3902 # -> add $dep to ${lib}_deps only once
3903 add_dep() {
3904     lib=$1
3905     dep=$2
3906     enabled "${lib}_deps_${dep}" && return 0
3907     enable  "${lib}_deps_${dep}"
3908     prepend "${lib}_deps" $dep
3909 }
3910
3911 # merge deps lib components
3912 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
3913 merge_deps() {
3914     lib=$1
3915     shift
3916     for comp in $*; do
3917         enabled $comp || continue
3918         eval "dep=\"\$${comp}_deps\""
3919         for d in $dep; do
3920             add_dep $lib $d
3921         done
3922     done
3923 }
3924
3925 merge_deps libavfilter $FILTER_LIST
3926
3927 echo "install prefix            $prefix"
3928 echo "source path               $source_path"
3929 echo "C compiler                $cc"
3930 echo "ARCH                      $arch ($cpu)"
3931 if test "$build_suffix" != ""; then
3932     echo "build suffix              $build_suffix"
3933 fi
3934 if test "$progs_suffix" != ""; then
3935     echo "progs suffix              $progs_suffix"
3936 fi
3937 if test "$extra_version" != ""; then
3938     echo "version string suffix     $extra_version"
3939 fi
3940 echo "big-endian                ${bigendian-no}"
3941 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3942 if enabled x86; then
3943     echo "${yasmexe}                      ${yasm-no}"
3944     echo "MMX enabled               ${mmx-no}"
3945     echo "MMXEXT enabled            ${mmxext-no}"
3946     echo "3DNow! enabled            ${amd3dnow-no}"
3947     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3948     echo "SSE enabled               ${sse-no}"
3949     echo "SSSE3 enabled             ${ssse3-no}"
3950     echo "AVX enabled               ${avx-no}"
3951     echo "FMA4 enabled              ${fma4-no}"
3952     echo "CMOV enabled              ${cmov-no}"
3953     echo "CMOV is fast              ${fast_cmov-no}"
3954     echo "EBX available             ${ebx_available-no}"
3955     echo "EBP available             ${ebp_available-no}"
3956 fi
3957 if enabled arm; then
3958     echo "ARMv5TE enabled           ${armv5te-no}"
3959     echo "ARMv6 enabled             ${armv6-no}"
3960     echo "ARMv6T2 enabled           ${armv6t2-no}"
3961     echo "ARM VFP enabled           ${armvfp-no}"
3962     echo "NEON enabled              ${neon-no}"
3963 fi
3964 if enabled mips; then
3965     echo "MMI enabled               ${mmi-no}"
3966     echo "MIPS FPU enabled          ${mipsfpu-no}"
3967     echo "MIPS32R2 enabled          ${mips32r2-no}"
3968     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
3969     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
3970 fi
3971 if enabled ppc; then
3972     echo "AltiVec enabled           ${altivec-no}"
3973     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3974     echo "dcbzl available           ${dcbzl-no}"
3975 fi
3976 if enabled sparc; then
3977     echo "VIS enabled               ${vis-no}"
3978 fi
3979 echo "debug symbols             ${debug-no}"
3980 echo "strip symbols             ${stripping-no}"
3981 echo "optimize for size         ${small-no}"
3982 echo "optimizations             ${optimizations-no}"
3983 echo "static                    ${static-no}"
3984 echo "shared                    ${shared-no}"
3985 echo "postprocessing support    ${postproc-no}"
3986 echo "new filter support        ${avfilter-no}"
3987 echo "network support           ${network-no}"
3988 echo "threading support         ${thread_type-no}"
3989 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3990 echo "SDL support               ${sdl-no}"
3991 echo "libdxva2 enabled          ${dxva2-no}"
3992 echo "libva enabled             ${vaapi-no}"
3993 echo "libvdpau enabled          ${vdpau-no}"
3994 echo "AVISynth enabled          ${avisynth-no}"
3995 echo "frei0r enabled            ${frei0r-no}"
3996 echo "gnutls enabled            ${gnutls-no}"
3997 echo "libaacplus enabled        ${libaacplus-no}"
3998 echo "libass enabled            ${libass-no}"
3999 echo "libcaca enabled           ${libcaca-no}"