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