Merge commit '6906b19346ae8a330bfaa1c16ce535be10789723'
[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 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104
105 Program options:
106   --disable-programs       do not build command line programs
107   --disable-ffmpeg         disable ffmpeg build
108   --disable-ffplay         disable ffplay build
109   --disable-ffprobe        disable ffprobe build
110   --disable-ffserver       disable ffserver build
111
112 Documentation options:
113   --disable-doc            do not build documentation
114   --disable-htmlpages      do not build HTML documentation pages
115   --disable-manpages       do not build man documentation pages
116   --disable-podpages       do not build POD documentation pages
117   --disable-txtpages       do not build text documentation pages
118
119 Component options:
120   --disable-avdevice       disable libavdevice build
121   --disable-avcodec        disable libavcodec build
122   --disable-avformat       disable libavformat build
123   --disable-avutil         disable libavutil build
124   --disable-swresample     disable libswresample build
125   --disable-swscale        disable libswscale build
126   --disable-postproc       disable libpostproc build
127   --disable-avfilter       disable libavfilter build
128   --enable-avresample      enable libavresample build [no]
129   --disable-pthreads       disable pthreads [auto]
130   --disable-w32threads     disable Win32 threads [auto]
131   --disable-os2threads     disable OS/2 threads [auto]
132   --enable-x11grab         enable X11 grabbing [no]
133   --disable-network        disable network support [no]
134   --disable-dct            disable DCT code
135   --disable-dwt            disable DWT code
136   --disable-lsp            disable LSP code
137   --disable-lzo            disable LZO decoder code
138   --disable-mdct           disable MDCT code
139   --disable-rdft           disable RDFT code
140   --disable-fft            disable FFT code
141   --enable-dxva2           enable DXVA2 code
142   --enable-vaapi           enable VAAPI code [autodetect]
143   --enable-vda             enable VDA code   [autodetect]
144   --enable-vdpau           enable VDPAU code [autodetect]
145
146 Individual component options:
147   --disable-everything     disable all components listed below
148   --disable-encoder=NAME   disable encoder NAME
149   --enable-encoder=NAME    enable encoder NAME
150   --disable-encoders       disable all encoders
151   --disable-decoder=NAME   disable decoder NAME
152   --enable-decoder=NAME    enable decoder NAME
153   --disable-decoders       disable all decoders
154   --disable-hwaccel=NAME   disable hwaccel NAME
155   --enable-hwaccel=NAME    enable hwaccel NAME
156   --disable-hwaccels       disable all hwaccels
157   --disable-muxer=NAME     disable muxer NAME
158   --enable-muxer=NAME      enable muxer NAME
159   --disable-muxers         disable all muxers
160   --disable-demuxer=NAME   disable demuxer NAME
161   --enable-demuxer=NAME    enable demuxer NAME
162   --disable-demuxers       disable all demuxers
163   --enable-parser=NAME     enable parser NAME
164   --disable-parser=NAME    disable parser NAME
165   --disable-parsers        disable all parsers
166   --enable-bsf=NAME        enable bitstream filter NAME
167   --disable-bsf=NAME       disable bitstream filter NAME
168   --disable-bsfs           disable all bitstream filters
169   --enable-protocol=NAME   enable protocol NAME
170   --disable-protocol=NAME  disable protocol NAME
171   --disable-protocols      disable all protocols
172   --enable-indev=NAME      enable input device NAME
173   --disable-indev=NAME     disable input device NAME
174   --disable-indevs         disable input devices
175   --enable-outdev=NAME     enable output device NAME
176   --disable-outdev=NAME    disable output device NAME
177   --disable-outdevs        disable output devices
178   --disable-devices        disable all devices
179   --enable-filter=NAME     enable filter NAME
180   --disable-filter=NAME    disable filter NAME
181   --disable-filters        disable all filters
182
183 External library support:
184   --enable-avisynth        enable reading of AVISynth script files [no]
185   --enable-bzlib           enable bzlib [autodetect]
186   --enable-fontconfig      enable fontconfig
187   --enable-frei0r          enable frei0r video filtering
188   --enable-gnutls          enable gnutls [no]
189   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
190   --enable-libass          enable libass subtitles rendering [no]
191   --enable-libbluray       enable BluRay reading using libbluray [no]
192   --enable-libcaca         enable textual display using libcaca
193   --enable-libcelt         enable CELT decoding via libcelt [no]
194   --enable-libcdio         enable audio CD grabbing with libcdio
195   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
196                            and libraw1394 [no]
197   --enable-libfaac         enable AAC encoding via libfaac [no]
198   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
199   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
200   --enable-libfreetype     enable libfreetype [no]
201   --enable-libgsm          enable GSM de/encoding via libgsm [no]
202   --enable-libiec61883     enable iec61883 via libiec61883 [no]
203   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
204   --enable-libmodplug      enable ModPlug via libmodplug [no]
205   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
206   --enable-libnut          enable NUT (de)muxing via libnut,
207                            native (de)muxer exists [no]
208   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
209   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
210   --enable-libopencv       enable video filtering via libopencv [no]
211   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
212   --enable-libopus         enable Opus decoding via libopus [no]
213   --enable-libpulse        enable Pulseaudio input via libpulse [no]
214   --enable-librtmp         enable RTMP[E] support via librtmp [no]
215   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
216   --enable-libsoxr         enable Include libsoxr resampling [no]
217   --enable-libspeex        enable Speex de/encoding via libspeex [no]
218   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
219   --enable-libtheora       enable Theora encoding via libtheora [no]
220   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
221   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
222   --enable-libv4l2         enable libv4l2/v4l-utils [no]
223   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
224   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
225   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
226                            native implementation exists [no]
227   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
228   --enable-libx264         enable H.264 encoding via x264 [no]
229   --enable-libxavs         enable AVS encoding via xavs [no]
230   --enable-libxvid         enable Xvid encoding via xvidcore,
231                            native MPEG-4/Xvid encoder exists [no]
232   --enable-openal          enable OpenAL 1.1 capture support [no]
233   --enable-openssl         enable openssl [no]
234   --enable-zlib            enable zlib [autodetect]
235
236 Advanced options (experts only):
237   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
238   --enable-cross-compile   assume a cross-compiler is used
239   --sysroot=PATH           root of cross-build tree
240   --sysinclude=PATH        location of cross-build system headers
241   --target-os=OS           compiler targets OS [$target_os]
242   --target-exec=CMD        command to run executables on target
243   --target-path=DIR        path to view of build directory on target
244   --toolchain=NAME         set tool defaults according to NAME
245   --nm=NM                  use nm tool NM [$nm_default]
246   --ar=AR                  use archive tool AR [$ar_default]
247   --as=AS                  use assembler AS [$as_default]
248   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
249   --cc=CC                  use C compiler CC [$cc_default]
250   --cxx=CXX                use C compiler CXX [$cxx_default]
251   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
252   --ld=LD                  use linker LD [$ld_default]
253   --host-cc=HOSTCC         use host C compiler HOSTCC
254   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
255   --host-ld=HOSTLD         use host linker HOSTLD
256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
257   --host-libs=HLIBS        use libs HLIBS when linking for host
258   --host-os=OS             compiler host OS [$target_os]
259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
260   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
262   --extra-libs=ELIBS       add ELIBS [$ELIBS]
263   --extra-version=STRING   version string suffix []
264   --optflags=OPTFLAGS      override optimization-related compiler flags
265   --build-suffix=SUFFIX    library name suffix []
266   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
267   --progs-suffix=SUFFIX    program name suffix []
268   --arch=ARCH              select architecture [$arch]
269   --cpu=CPU                select the minimum required CPU (affects
270                            instruction selection, may crash on older CPUs)
271   --enable-pic             build position-independent code
272   --enable-sram            allow use of on-chip SRAM
273   --enable-thumb           compile for Thumb instruction set
274   --disable-symver         disable symbol versioning
275   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
276   --disable-safe-bitstream-reader
277                            disable buffer boundary checking in bitreaders
278                            (faster, but may crash)
279   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
280   --enable-lto             use link-time optimization
281
282 Optimization options (experts only):
283   --disable-asm            disable all assembler optimizations
284   --disable-altivec        disable AltiVec optimizations
285   --disable-amd3dnow       disable 3DNow! optimizations
286   --disable-amd3dnowext    disable 3DNow! extended optimizations
287   --disable-mmx            disable MMX optimizations
288   --disable-mmxext         disable MMXEXT optimizations
289   --disable-sse            disable SSE optimizations
290   --disable-sse2           disable SSE2 optimizations
291   --disable-sse3           disable SSE3 optimizations
292   --disable-ssse3          disable SSSE3 optimizations
293   --disable-sse4           disable SSE4 optimizations
294   --disable-sse42          disable SSE4.2 optimizations
295   --disable-avx            disable AVX optimizations
296   --disable-fma4           disable FMA4 optimizations
297   --disable-armv5te        disable armv5te optimizations
298   --disable-armv6          disable armv6 optimizations
299   --disable-armv6t2        disable armv6t2 optimizations
300   --disable-vfp            disable VFP optimizations
301   --disable-neon           disable NEON optimizations
302   --disable-vis            disable VIS optimizations
303   --disable-inline-asm     disable use of inline assembler
304   --disable-yasm           disable use of yasm assembler
305   --disable-mips32r2       disable MIPS32R2 optimizations
306   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
307   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
308   --disable-mipsfpu        disable floating point MIPS optimizations
309   --disable-fast-unaligned consider unaligned accesses slow
310   --postproc-version=V     build libpostproc version V.
311                            Where V can be '$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO' or 'current'. [$postproc_version_default]
312
313 Developer options (useful when working on FFmpeg itself):
314   --enable-coverage        build with test coverage instrumentation
315   --disable-debug          disable debugging symbols
316   --enable-debug=LEVEL     set the debug level [$debuglevel]
317   --disable-optimizations  disable compiler optimizations
318   --enable-extra-warnings  enable more compiler warnings
319   --disable-stripping      disable stripping of executables and shared libraries
320   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
321                            2 causes a slowdown at runtime.
322   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
323   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
324                            leaks and errors, using the specified valgrind binary.
325                            Cannot be combined with --target-exec
326   --enable-ftrapv          Trap arithmetic overflows
327   --samples=PATH           location of test samples for FATE, if not set use
328                            \$FATE_SAMPLES at make invocation time.
329   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
330                            should be used only for debugging purposes)
331   --enable-random          randomly enable/disable components
332   --disable-random
333   --enable-random=LIST     randomly enable/disable specific components or
334   --disable-random=LIST    component groups. LIST is a comma-separated list
335                            of NAME[:PROB] entries where NAME is a component
336                            (group) and PROB the probability associated with
337                            NAME (default 0.5).
338   --random-seed=VALUE      seed value for --enable/disable-random
339
340 NOTE: Object files are built at the place where configure is launched.
341 EOF
342   exit 0
343 }
344
345 quotes='""'
346
347 log(){
348     echo "$@" >> $logfile
349 }
350
351 log_file(){
352     log BEGIN $1
353     pr -n -t $1 >> $logfile
354     log END $1
355 }
356
357 echolog(){
358     log "$@"
359     echo "$@"
360 }
361
362 warn(){
363     log "WARNING: $*"
364     WARNINGS="${WARNINGS}WARNING: $*\n"
365 }
366
367 die(){
368     echolog "$@"
369     cat <<EOF
370
371 If you think configure made a mistake, make sure you are using the latest
372 version from Git.  If the latest version fails, report the problem to the
373 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
374 EOF
375     if disabled logging; then
376         cat <<EOF
377 Rerun configure with logging enabled (do not use --disable-logging), and
378 include the log this produces with your report.
379 EOF
380     else
381         cat <<EOF
382 Include the log file "$logfile" produced by configure as this will help
383 solving the problem.
384 EOF
385     fi
386     exit 1
387 }
388
389 # Avoid locale weirdness, besides we really just want to translate ASCII.
390 toupper(){
391     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
392 }
393
394 tolower(){
395     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
396 }
397
398 c_escape(){
399     echo "$*" | sed 's/["\\]/\\\0/g'
400 }
401
402 sh_quote(){
403     v=$(echo "$1" | sed "s/'/'\\\\''/g")
404     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
405     echo "$v"
406 }
407
408 cleanws(){
409     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
410 }
411
412 filter(){
413     pat=$1
414     shift
415     for v; do
416         eval "case $v in $pat) echo $v ;; esac"
417     done
418 }
419
420 filter_out(){
421     pat=$1
422     shift
423     for v; do
424         eval "case $v in $pat) ;; *) echo $v ;; esac"
425     done
426 }
427
428 map(){
429     m=$1
430     shift
431     for v; do eval $m; done
432 }
433
434 add_suffix(){
435     suffix=$1
436     shift
437     for v; do echo ${v}${suffix}; done
438 }
439
440 set_all(){
441     value=$1
442     shift
443     for var in $*; do
444         eval $var=$value
445     done
446 }
447
448 set_weak(){
449     value=$1
450     shift
451     for var; do
452         eval : \${$var:=$value}
453     done
454 }
455
456 set_safe(){
457     var=$1
458     shift
459     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
460 }
461
462 get_safe(){
463     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
464 }
465
466 pushvar(){
467     for var in $*; do
468         eval level=\${${var}_level:=0}
469         eval ${var}_${level}="\$$var"
470         eval ${var}_level=$(($level+1))
471     done
472 }
473
474 popvar(){
475     for var in $*; do
476         eval level=\${${var}_level:-0}
477         test $level = 0 && continue
478         eval level=$(($level-1))
479         eval $var="\${${var}_${level}}"
480         eval ${var}_level=$level
481         eval unset ${var}_${level}
482     done
483 }
484
485 enable(){
486     set_all yes $*
487 }
488
489 disable(){
490     set_all no $*
491 }
492
493 enable_weak(){
494     set_weak yes $*
495 }
496
497 disable_weak(){
498     set_weak no $*
499 }
500
501 enable_safe(){
502     for var; do
503         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
504     done
505 }
506
507 disable_safe(){
508     for var; do
509         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
510     done
511 }
512
513 do_enable_deep(){
514     for var; do
515         enabled $var && continue
516         eval sel="\$${var}_select"
517         eval sgs="\$${var}_suggest"
518         pushvar var sgs
519         enable_deep $sel
520         popvar sgs
521         enable_deep_weak $sgs
522         popvar var
523     done
524 }
525
526 enable_deep(){
527     do_enable_deep $*
528     enable $*
529 }
530
531 enable_deep_weak(){
532     do_enable_deep $*
533     enable_weak $*
534 }
535
536 enabled(){
537     test "${1#!}" = "$1" && op== || op=!=
538     eval test "x\$${1#!}" $op "xyes"
539 }
540
541 disabled(){
542     test "${1#!}" = "$1" && op== || op=!=
543     eval test "x\$${1#!}" $op "xno"
544 }
545
546 enabled_all(){
547     for opt; do
548         enabled $opt || return 1
549     done
550 }
551
552 disabled_all(){
553     for opt; do
554         disabled $opt || return 1
555     done
556 }
557
558 enabled_any(){
559     for opt; do
560         enabled $opt && return 0
561     done
562 }
563
564 disabled_any(){
565     for opt; do
566         disabled $opt && return 0
567     done
568     return 1
569 }
570
571 set_default(){
572     for opt; do
573         eval : \${$opt:=\$${opt}_default}
574     done
575 }
576
577 is_in(){
578     value=$1
579     shift
580     for var in $*; do
581         [ $var = $value ] && return 0
582     done
583     return 1
584 }
585
586 do_check_deps(){
587     for cfg; do
588         cfg="${cfg#!}"
589         enabled ${cfg}_checking && die "Circular dependency for $cfg."
590         disabled ${cfg}_checking && continue
591         enable ${cfg}_checking
592         append allopts $cfg
593
594         eval dep_all="\$${cfg}_deps"
595         eval dep_any="\$${cfg}_deps_any"
596         eval dep_sel="\$${cfg}_select"
597         eval dep_sgs="\$${cfg}_suggest"
598         eval dep_ifa="\$${cfg}_if"
599         eval dep_ifn="\$${cfg}_if_any"
600
601         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
603         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
604
605         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
606         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
607         enabled_all  $dep_all || disable $cfg
608         enabled_any  $dep_any || disable $cfg
609         disabled_any $dep_sel && disable $cfg
610
611         if enabled $cfg; then
612             enable_deep $dep_sel
613             enable_deep_weak $dep_sgs
614         fi
615
616         disable ${cfg}_checking
617     done
618 }
619
620 check_deps(){
621     unset allopts
622
623     do_check_deps "$@"
624
625     for cfg in $allopts; do
626         enabled $cfg || continue
627         eval dep_extralibs="\$${cfg}_extralibs"
628         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
629     done
630 }
631
632 print_config(){
633     pfx=$1
634     files=$2
635     shift 2
636     map 'eval echo "$v \${$v:-no}"' "$@" |
637     awk "BEGIN { split(\"$files\", files) }
638         {
639             c = \"$pfx\" toupper(\$1);
640             v = \$2;
641             sub(/yes/, 1, v);
642             sub(/no/,  0, v);
643             for (f in files) {
644                 file = files[f];
645                 if (file ~ /\\.h\$/) {
646                     printf(\"#define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.asm\$/) {
648                     printf(\"%%define %s %d\\n\", c, v) >>file;
649                 } else if (file ~ /\\.mak\$/) {
650                     n = -v ? \"\" : \"!\";
651                     printf(\"%s%s=yes\\n\", n, c) >>file;
652                 }
653             }
654         }"
655 }
656
657 print_enabled(){
658     suf=$1
659     shift
660     for v; do
661         enabled $v && printf "%s\n" ${v%$suf};
662     done
663 }
664
665 append(){
666     var=$1
667     shift
668     eval "$var=\"\$$var $*\""
669 }
670
671 prepend(){
672     var=$1
673     shift
674     eval "$var=\"$* \$$var\""
675 }
676
677 add_cppflags(){
678     append CPPFLAGS "$@"
679 }
680
681 add_cflags(){
682     append CFLAGS $($cflags_filter "$@")
683 }
684
685 add_cxxflags(){
686     append CXXFLAGS $($cflags_filter "$@")
687 }
688
689 add_asflags(){
690     append ASFLAGS $($asflags_filter "$@")
691 }
692
693 add_ldflags(){
694     append LDFLAGS $($ldflags_filter "$@")
695 }
696
697 add_extralibs(){
698     prepend extralibs $($ldflags_filter "$@")
699 }
700
701 add_host_cflags(){
702     append host_cflags $($host_cflags_filter "$@")
703 }
704
705 add_host_ldflags(){
706     append host_ldflags $($host_ldflags_filter "$@")
707 }
708
709 add_compat(){
710     append compat_objs $1
711     shift
712     map 'add_cppflags -D$v' "$@"
713 }
714
715 check_cmd(){
716     log "$@"
717     "$@" >> $logfile 2>&1
718 }
719
720 cc_o(){
721     eval printf '%s\\n' $CC_O
722 }
723
724 cc_e(){
725     eval printf '%s\\n' $CC_E
726 }
727
728 check_cc(){
729     log check_cc "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
733 }
734
735 check_cxx(){
736     log check_cxx "$@"
737     cat > $TMPCPP
738     log_file $TMPCPP
739     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
740 }
741
742 check_cpp(){
743     log check_cpp "$@"
744     cat > $TMPC
745     log_file $TMPC
746     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
747 }
748
749 as_o(){
750     eval printf '%s\\n' $AS_O
751 }
752
753 check_as(){
754     log check_as "$@"
755     cat > $TMPS
756     log_file $TMPS
757     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
758 }
759
760 check_inline_asm(){
761     log check_inline_asm "$@"
762     name="$1"
763     code="$2"
764     shift 2
765     disable $name
766     check_cc "$@" <<EOF && enable $name
767 void foo(void){ __asm__ volatile($code); }
768 EOF
769 }
770
771 check_insn(){
772     log check_insn "$@"
773     check_inline_asm ${1}_inline "\"$2\""
774     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
775 }
776
777 check_yasm(){
778     log check_yasm "$@"
779     echo "$1" > $TMPS
780     log_file $TMPS
781     shift 1
782     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
783 }
784
785 ld_o(){
786     eval printf '%s\\n' $LD_O
787 }
788
789 check_ld(){
790     log check_ld "$@"
791     type=$1
792     shift 1
793     flags=$(filter_out '-l*' $@)
794     libs=$(filter '-l*' $@)
795     check_$type $($cflags_filter $flags) || return
796     flags=$($ldflags_filter $flags)
797     libs=$($ldflags_filter $libs)
798     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
799 }
800
801 check_code(){
802     log check_code "$@"
803     check=$1
804     headers=$2
805     code=$3
806     shift 3
807     {
808         for hdr in $headers; do
809             echo "#include <$hdr>"
810         done
811         echo "int main(void) { $code; return 0; }"
812     } | check_$check "$@"
813 }
814
815 check_cppflags(){
816     log check_cppflags "$@"
817     check_cc "$@" <<EOF && append CPPFLAGS "$@"
818 int x;
819 EOF
820 }
821
822 check_cflags(){
823     log check_cflags "$@"
824     set -- $($cflags_filter "$@")
825     check_cc "$@" <<EOF && append CFLAGS "$@"
826 int x;
827 EOF
828 }
829
830 check_cxxflags(){
831     log check_cxxflags "$@"
832     set -- $($cflags_filter "$@")
833     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
834 int x;
835 EOF
836 }
837
838 test_ldflags(){
839     log test_ldflags "$@"
840     check_ld "cc" "$@" <<EOF
841 int main(void){ return 0; }
842 EOF
843 }
844
845 check_ldflags(){
846     log check_ldflags "$@"
847     test_ldflags "$@" && add_ldflags "$@"
848 }
849
850 check_header(){
851     log check_header "$@"
852     header=$1
853     shift
854     disable_safe $header
855     check_cpp "$@" <<EOF && enable_safe $header
856 #include <$header>
857 int x;
858 EOF
859 }
860
861 check_func(){
862     log check_func "$@"
863     func=$1
864     shift
865     disable $func
866     check_ld "cc" "$@" <<EOF && enable $func
867 extern int $func();
868 int main(void){ $func(); }
869 EOF
870 }
871
872 check_mathfunc(){
873     log check_mathfunc "$@"
874     func=$1
875     narg=$2
876     shift 2
877     test $narg = 2 && args="f, g" || args="f"
878     disable $func
879     check_ld "cc" "$@" <<EOF && enable $func
880 #include <math.h>
881 float foo(float f, float g) { return $func($args); }
882 int main(void){ return (int) foo; }
883 EOF
884 }
885
886 check_func_headers(){
887     log check_func_headers "$@"
888     headers=$1
889     funcs=$2
890     shift 2
891     {
892         for hdr in $headers; do
893             echo "#include <$hdr>"
894         done
895         for func in $funcs; do
896             echo "long check_$func(void) { return (long) $func; }"
897         done
898         echo "int main(void) { return 0; }"
899     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
900 }
901
902 check_class_headers_cpp(){
903     log check_class_headers_cpp "$@"
904     headers=$1
905     classes=$2
906     shift 2
907     {
908         for hdr in $headers; do
909             echo "#include <$hdr>"
910         done
911         echo "int main(void) { "
912         i=1
913         for class in $classes; do
914             echo "$class obj$i;"
915             i=$(expr $i + 1)
916         done
917         echo "return 0; }"
918     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
919 }
920
921 check_cpp_condition(){
922     log check_cpp_condition "$@"
923     header=$1
924     condition=$2
925     shift 2
926     check_cpp "$@" <<EOF
927 #include <$header>
928 #if !($condition)
929 #error "unsatisfied condition: $condition"
930 #endif
931 EOF
932 }
933
934 check_lib(){
935     log check_lib "$@"
936     header="$1"
937     func="$2"
938     shift 2
939     check_header $header && check_func $func "$@" && add_extralibs "$@"
940 }
941
942 check_lib2(){
943     log check_lib2 "$@"
944     headers="$1"
945     funcs="$2"
946     shift 2
947     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
948 }
949
950 check_lib_cpp(){
951     log check_lib_cpp "$@"
952     headers="$1"
953     classes="$2"
954     shift 2
955     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
956 }
957
958 check_pkg_config(){
959     log check_pkg_config "$@"
960     pkg="$1"
961     headers="$2"
962     funcs="$3"
963     shift 3
964     $pkg_config --exists $pkg 2>/dev/null || return
965     pkg_cflags=$($pkg_config --cflags $pkg)
966     pkg_libs=$($pkg_config --libs $pkg)
967     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
968         set_safe ${pkg}_cflags $pkg_cflags   &&
969         set_safe ${pkg}_libs   $pkg_libs
970 }
971
972 check_exec(){
973     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
974 }
975
976 check_exec_crash(){
977     code=$(cat)
978
979     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
980     # are safe but may not be available everywhere.  Thus we use
981     # raise(SIGTERM) instead.  The check is run in a subshell so we
982     # can redirect the "Terminated" message from the shell.  SIGBUS
983     # is not defined by standard C so it is used conditionally.
984
985     (check_exec "$@") >> $logfile 2>&1 <<EOF
986 #include <signal.h>
987 static void sighandler(int sig){
988     raise(SIGTERM);
989 }
990 int func(void){
991     $code
992 }
993 int (*func_ptr)(void) = func;
994 int main(void){
995     signal(SIGILL, sighandler);
996     signal(SIGFPE, sighandler);
997     signal(SIGSEGV, sighandler);
998 #ifdef SIGBUS
999     signal(SIGBUS, sighandler);
1000 #endif
1001     return func_ptr();
1002 }
1003 EOF
1004 }
1005
1006 check_type(){
1007     log check_type "$@"
1008     headers=$1
1009     type=$2
1010     shift 2
1011     disable_safe "$type"
1012     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1013 }
1014
1015 check_struct(){
1016     log check_type "$@"
1017     headers=$1
1018     struct=$2
1019     member=$3
1020     shift 3
1021     disable_safe "${struct}_${member}"
1022     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1023         enable_safe "${struct}_${member}"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_cpp(){
1043     name="$1"
1044     headers="$2"
1045     classes="$3"
1046     shift 3
1047     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1048 }
1049
1050 require_pkg_config(){
1051     pkg="$1"
1052     check_pkg_config "$@" || die "ERROR: $pkg not found"
1053     add_cflags    $(get_safe ${pkg}_cflags)
1054     add_extralibs $(get_safe ${pkg}_libs)
1055 }
1056
1057 hostcc_o(){
1058     eval printf '%s\\n' $HOSTCC_O
1059 }
1060
1061 check_host_cc(){
1062     log check_host_cc "$@"
1063     cat > $TMPC
1064     log_file $TMPC
1065     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1066 }
1067
1068 check_host_cflags(){
1069     log check_host_cflags "$@"
1070     set -- $($host_cflags_filter "$@")
1071     check_host_cc "$@" <<EOF && append host_cflags "$@"
1072 int x;
1073 EOF
1074 }
1075
1076 apply(){
1077     file=$1
1078     shift
1079     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1080 }
1081
1082 cp_if_changed(){
1083     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1084     mkdir -p "$(dirname $2)"
1085     $cp_f "$1" "$2"
1086 }
1087
1088 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1089 # system-dependent things.
1090
1091 COMPONENT_LIST="
1092     bsfs
1093     decoders
1094     demuxers
1095     encoders
1096     filters
1097     hwaccels
1098     indevs
1099     muxers
1100     outdevs
1101     parsers
1102     protocols
1103 "
1104
1105 DOCUMENT_LIST="
1106     doc
1107     htmlpages
1108     manpages
1109     podpages
1110     txtpages
1111 "
1112
1113 LIBRARY_LIST="
1114     avcodec
1115     avdevice
1116     avfilter
1117     avformat
1118     avresample
1119     avutil
1120     swresample
1121     swscale
1122 "
1123
1124 PROGRAM_LIST="
1125     ffplay
1126     ffprobe
1127     ffserver
1128     ffmpeg
1129 "
1130
1131 CONFIG_LIST="
1132     $COMPONENT_LIST
1133     $DOCUMENT_LIST
1134     $LIBRARY_LIST
1135     $PROGRAM_LIST
1136     avisynth
1137     bzlib
1138     crystalhd
1139     dct
1140     dwt
1141     dxva2
1142     fast_unaligned
1143     fft
1144     fontconfig
1145     frei0r
1146     ftrapv
1147     gnutls
1148     gpl
1149     gray
1150     hardcoded_tables
1151     incompatible_fork_abi
1152     libaacplus
1153     libass
1154     libbluray
1155     libcaca
1156     libcdio
1157     libcelt
1158     libdc1394
1159     libfaac
1160     libfdk_aac
1161     libflite
1162     libfreetype
1163     libgsm
1164     libiec61883
1165     libilbc
1166     libmodplug
1167     libmp3lame
1168     libnut
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenjpeg
1173     libopus
1174     libpulse
1175     librtmp
1176     libschroedinger
1177     libsoxr
1178     libspeex
1179     libstagefright_h264
1180     libtheora
1181     libtwolame
1182     libutvideo
1183     libv4l2
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libx264
1189     libxavs
1190     libxvid
1191     lsp
1192     lzo
1193     mdct
1194     memalign_hack
1195     memory_poisoning
1196     network
1197     nonfree
1198     openal
1199     openssl
1200     pic
1201     postproc
1202     rdft
1203     runtime_cpudetect
1204     safe_bitstream_reader
1205     shared
1206     small
1207     sram
1208     static
1209     swscale_alpha
1210     thumb
1211     vaapi
1212     vda
1213     vdpau
1214     version3
1215     xmm_clobber_test
1216     x11grab
1217     zlib
1218 "
1219
1220 THREADS_LIST='
1221     pthreads
1222     w32threads
1223     os2threads
1224 '
1225
1226 ARCH_LIST='
1227     aarch64
1228     alpha
1229     arm
1230     avr32
1231     avr32_ap
1232     avr32_uc
1233     bfin
1234     ia64
1235     m68k
1236     mips
1237     mips64
1238     parisc
1239     ppc
1240     ppc64
1241     s390
1242     sh4
1243     sparc
1244     sparc64
1245     tilegx
1246     tilepro
1247     tomi
1248     x86
1249     x86_32
1250     x86_64
1251 '
1252
1253 ARCH_EXT_LIST_ARM='
1254     armv5te
1255     armv6
1256     armv6t2
1257     neon
1258     vfp
1259     vfpv3
1260 '
1261
1262 ARCH_EXT_LIST_X86='
1263     amd3dnow
1264     amd3dnowext
1265     avx
1266     fma4
1267     mmx
1268     mmxext
1269     sse
1270     sse2
1271     sse3
1272     sse4
1273     sse42
1274     ssse3
1275 '
1276
1277 ARCH_EXT_LIST="
1278     $ARCH_EXT_LIST_ARM
1279     $ARCH_EXT_LIST_X86
1280     altivec
1281     ppc4xx
1282     vis
1283     mipsfpu
1284     mips32r2
1285     mipsdspr1
1286     mipsdspr2
1287 "
1288
1289 HAVE_LIST_CMDLINE='
1290     inline_asm
1291     symver
1292     yasm
1293 '
1294
1295 HAVE_LIST_PUB='
1296     bigendian
1297     fast_unaligned
1298     incompatible_fork_abi
1299 '
1300
1301 MATH_FUNCS="
1302     atanf
1303     atan2f
1304     cbrtf
1305     cosf
1306     exp2
1307     exp2f
1308     expf
1309     isinf
1310     isnan
1311     ldexpf
1312     llrint
1313     llrintf
1314     log2
1315     log2f
1316     log10f
1317     lrint
1318     lrintf
1319     powf
1320     rint
1321     round
1322     roundf
1323     sinf
1324     trunc
1325     truncf
1326 "
1327
1328 HAVE_LIST="
1329     $ARCH_EXT_LIST
1330     $(add_suffix _external $ARCH_EXT_LIST)
1331     $(add_suffix _inline   $ARCH_EXT_LIST)
1332     $HAVE_LIST_CMDLINE
1333     $HAVE_LIST_PUB
1334     $THREADS_LIST
1335     $MATH_FUNCS
1336     access
1337     aligned_malloc
1338     aligned_stack
1339     alsa_asoundlib_h
1340     altivec_h
1341     arpa_inet_h
1342     asm_mod_q
1343     asm_mod_y
1344     asm_types_h
1345     attribute_may_alias
1346     attribute_packed
1347     clock_gettime
1348     closesocket
1349     cmov
1350     CommandLineToArgvW
1351     cpunop
1352     CryptGenRandom
1353     dcbzl
1354     dev_bktr_ioctl_bt848_h
1355     dev_bktr_ioctl_meteor_h
1356     dev_ic_bt8xx_h
1357     dev_video_bktr_ioctl_bt848_h
1358     dev_video_meteor_ioctl_meteor_h
1359     direct_h
1360     dlfcn_h
1361     dlopen
1362     dos_paths
1363     dxva_h
1364     ebp_available
1365     ebx_available
1366     fast_64bit
1367     fast_clz
1368     fast_cmov
1369     fcntl
1370     fork
1371     getaddrinfo
1372     gethrtime
1373     getopt
1374     GetProcessAffinityMask
1375     GetProcessMemoryInfo
1376     GetProcessTimes
1377     GetSystemTimeAsFileTime
1378     getrusage
1379     getservbyport
1380     gettimeofday
1381     glob
1382     gnu_as
1383     ibm_asm
1384     inet_aton
1385     io_h
1386     isatty
1387     jack_port_get_latency_range
1388     kbhit
1389     ldbrx
1390     libdc1394_1
1391     libdc1394_2
1392     local_aligned_16
1393     local_aligned_8
1394     localtime_r
1395     loongson
1396     lzo1x_999_compress
1397     machine_ioctl_bt848_h
1398     machine_ioctl_meteor_h
1399     makeinfo
1400     malloc_h
1401     MapViewOfFile
1402     memalign
1403     mkstemp
1404     mm_empty
1405     mmap
1406     mprotect
1407     msvcrt
1408     nanosleep
1409     PeekNamedPipe
1410     perl
1411     pod2man
1412     poll_h
1413     posix_memalign
1414     pthread_cancel
1415     rdtsc
1416     rsync_contimeout
1417     sched_getaffinity
1418     sdl
1419     sdl_video_size
1420     SetConsoleTextAttribute
1421     setmode
1422     setrlimit
1423     Sleep
1424     sndio_h
1425     socklen_t
1426     soundcard_h
1427     strerror_r
1428     struct_addrinfo
1429     struct_group_source_req
1430     struct_ip_mreq_source
1431     struct_ipv6_mreq
1432     struct_pollfd
1433     struct_rusage_ru_maxrss
1434     struct_sctp_event_subscribe
1435     struct_sockaddr_in6
1436     struct_sockaddr_sa_len
1437     struct_sockaddr_storage
1438     struct_v4l2_frmivalenum_discrete
1439     symver_asm_label
1440     symver_gnu_asm
1441     sysconf
1442     sysctl
1443     sys_mman_h
1444     sys_param_h
1445     sys_resource_h
1446     sys_select_h
1447     sys_soundcard_h
1448     sys_time_h
1449     sys_videoio_h
1450     termios_h
1451     texi2html
1452     threads
1453     unistd_h
1454     usleep
1455     vfp_args
1456     VirtualAlloc
1457     windows_h
1458     winsock2_h
1459     xform_asm
1460     xmm_clobbers
1461 "
1462
1463 # options emitted with CONFIG_ prefix but not available on command line
1464 CONFIG_EXTRA="
1465     aandcttables
1466     ac3dsp
1467     error_resilience
1468     gcrypt
1469     golomb
1470     gplv3
1471     h264chroma
1472     h264dsp
1473     h264pred
1474     h264qpel
1475     huffman
1476     lgplv3
1477     lpc
1478     mpegaudio
1479     mpegaudiodsp
1480     mpegvideo
1481     mpegvideoenc
1482     nettle
1483     rangecoder
1484     rtpdec
1485     sinewin
1486     videodsp
1487     vp3dsp
1488 "
1489
1490 CMDLINE_SELECT="
1491     $ARCH_EXT_LIST
1492     $CONFIG_LIST
1493     $HAVE_LIST_CMDLINE
1494     $THREADS_LIST
1495     asm
1496     coverage
1497     cross_compile
1498     debug
1499     extra_warnings
1500     logging
1501     lto
1502     optimizations
1503     stripping
1504 "
1505
1506 PATHS_LIST='
1507     bindir
1508     datadir
1509     incdir
1510     libdir
1511     mandir
1512     prefix
1513     shlibdir
1514 '
1515
1516 CMDLINE_SET="
1517     $PATHS_LIST
1518     ar
1519     arch
1520     as
1521     assert_level
1522     build_suffix
1523     cc
1524     cpu
1525     cross_prefix
1526     cxx
1527     dep_cc
1528     extra_version
1529     host_cc
1530     host_cflags
1531     host_ld
1532     host_ldflags
1533     host_libs
1534     host_os
1535     install
1536     ld
1537     logfile
1538     malloc_prefix
1539     nm
1540     optflags
1541     pkg_config
1542     postproc_version
1543     progs_suffix
1544     random_seed
1545     samples
1546     strip
1547     sysinclude
1548     sysroot
1549     target_exec
1550     target_os
1551     target_path
1552     toolchain
1553     valgrind
1554     yasmexe
1555 "
1556
1557 CMDLINE_APPEND="
1558     extra_cflags
1559     extra_cxxflags
1560 "
1561
1562 # code dependency declarations
1563
1564 # architecture extensions
1565
1566 armv5te_deps="arm"
1567 armv6_deps="arm"
1568 armv6t2_deps="arm"
1569 neon_deps="arm"
1570 vfp_deps="arm"
1571 vfpv3_deps="vfp"
1572
1573 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1574
1575 mipsfpu_deps="mips"
1576 mips32r2_deps="mips"
1577 mipsdspr1_deps="mips"
1578 mipsdspr2_deps="mips"
1579
1580 altivec_deps="ppc"
1581 ppc4xx_deps="ppc"
1582
1583 vis_deps="sparc"
1584
1585 x86_64_suggest="cmov fast_cmov"
1586
1587 amd3dnow_deps="mmx"
1588 amd3dnowext_deps="amd3dnow"
1589 mmx_deps="x86"
1590 mmxext_deps="mmx"
1591 sse_deps="mmxext"
1592 sse2_deps="sse"
1593 sse3_deps="sse2"
1594 ssse3_deps="sse3"
1595 sse4_deps="ssse3"
1596 sse42_deps="sse4"
1597 avx_deps="sse42"
1598 fma4_deps="avx"
1599
1600 mmx_external_deps="yasm"
1601 mmx_inline_deps="inline_asm"
1602 mmx_suggest="mmx_external mmx_inline"
1603
1604 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1605     eval dep=\$${ext}_deps
1606     eval ${ext}_external_deps='"${dep}_external"'
1607     eval ${ext}_inline_deps='"${dep}_inline"'
1608     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1609 done
1610
1611 aligned_stack_if_any="ppc x86"
1612 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1613 fast_clz_if_any="alpha avr32 mips ppc x86"
1614 fast_unaligned_if_any="ppc x86"
1615
1616 inline_asm_deps="!tms470"
1617 need_memalign="altivec neon sse"
1618
1619 symver_if_any="symver_asm_label symver_gnu_asm"
1620
1621 log2_deps="!msvcrt"
1622
1623 # subsystems
1624 dct_select="rdft"
1625 mdct_select="fft"
1626 rdft_select="fft"
1627 mpegaudio_select="mpegaudiodsp"
1628 mpegaudiodsp_select="dct"
1629 mpegvideoenc_select="mpegvideo"
1630
1631 # decoders / encoders / hardware accelerators
1632 aac_decoder_select="mdct sinewin"
1633 aac_encoder_select="mdct sinewin"
1634 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1635 ac3_decoder_select="mdct ac3dsp ac3_parser"
1636 ac3_encoder_select="mdct ac3dsp"
1637 ac3_fixed_encoder_select="mdct ac3dsp"
1638 alac_encoder_select="lpc"
1639 amrnb_decoder_select="lsp"
1640 amrwb_decoder_select="lsp"
1641 amv_encoder_select="aandcttables"
1642 atrac1_decoder_select="mdct sinewin"
1643 atrac3_decoder_select="mdct"
1644 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1645 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1646 cavs_decoder_select="golomb mpegvideo"
1647 comfortnoise_encoder_select="lpc"
1648 cook_decoder_select="mdct sinewin"
1649 cscd_decoder_select="lzo"
1650 cscd_decoder_suggest="zlib"
1651 dca_decoder_select="mdct"
1652 dirac_decoder_select="dwt golomb"
1653 dnxhd_encoder_select="aandcttables mpegvideoenc"
1654 dxa_decoder_select="zlib"
1655 eac3_decoder_select="ac3_decoder"
1656 eac3_encoder_select="ac3_encoder"
1657 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1658 eatgq_decoder_select="aandcttables"
1659 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1660 exr_decoder_select="zlib"
1661 ffv1_decoder_select="golomb rangecoder"
1662 ffv1_encoder_select="rangecoder"
1663 ffvhuff_encoder_select="huffman"
1664 flac_decoder_select="golomb"
1665 flac_encoder_select="golomb lpc"
1666 flashsv_decoder_select="zlib"
1667 flashsv_encoder_select="zlib"
1668 flashsv2_encoder_select="zlib"
1669 flashsv2_decoder_select="zlib"
1670 flv_decoder_select="h263_decoder"
1671 flv_encoder_select="h263_encoder"
1672 fraps_decoder_select="huffman"
1673 h261_decoder_select="error_resilience mpegvideo"
1674 h261_encoder_select="aandcttables mpegvideoenc"
1675 h263_decoder_select="error_resilience h263_parser mpegvideo"
1676 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1677 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1678 h263i_decoder_select="h263_decoder"
1679 h263p_encoder_select="h263_encoder"
1680 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1681 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1682 h264_dxva2_hwaccel_deps="dxva2api_h"
1683 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1684 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1685 h264_vda_decoder_select="vda h264_parser h264_decoder"
1686 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1687 h264_vda_hwaccel_select="vda h264_decoder"
1688 h264_vdpau_decoder_select="vdpau h264_decoder"
1689 huffyuv_encoder_select="huffman"
1690 iac_decoder_select="fft mdct sinewin"
1691 imc_decoder_select="fft mdct sinewin"
1692 jpegls_decoder_select="golomb"
1693 jpegls_encoder_select="golomb"
1694 ljpeg_encoder_select="aandcttables mpegvideoenc"
1695 loco_decoder_select="golomb"
1696 mdec_decoder_select="error_resilience mpegvideo"
1697 mjpeg_encoder_select="aandcttables mpegvideoenc"
1698 mlp_decoder_select="mlp_parser"
1699 mp1_decoder_select="mpegaudio"
1700 mp1float_decoder_select="mpegaudio"
1701 mp2_decoder_select="mpegaudio"
1702 mp2float_decoder_select="mpegaudio"
1703 mp3_decoder_select="mpegaudio"
1704 mp3adu_decoder_select="mpegaudio"
1705 mp3adufloat_decoder_select="mpegaudio"
1706 mp3float_decoder_select="mpegaudio"
1707 mp3on4_decoder_select="mpegaudio"
1708 mp3on4float_decoder_select="mpegaudio"
1709 mpc7_decoder_select="mpegaudiodsp"
1710 mpc8_decoder_select="mpegaudiodsp"
1711 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1712 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1713 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1714 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1715 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1716 mpeg1video_decoder_select="error_resilience mpegvideo"
1717 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1718 mpeg2_crystalhd_decoder_select="crystalhd"
1719 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1720 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1721 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1722 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1723 mpeg2video_decoder_select="error_resilience mpegvideo"
1724 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1725 mpeg4_crystalhd_decoder_select="crystalhd"
1726 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1727 mpeg4_encoder_select="h263_encoder"
1728 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1729 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1730 mpegvideo_select="videodsp"
1731 msmpeg4_crystalhd_decoder_select="crystalhd"
1732 msmpeg4v1_decoder_select="h263_decoder"
1733 msmpeg4v1_encoder_select="h263_encoder"
1734 msmpeg4v2_decoder_select="h263_decoder"
1735 msmpeg4v2_encoder_select="h263_encoder"
1736 msmpeg4v3_decoder_select="h263_decoder"
1737 msmpeg4v3_encoder_select="h263_encoder"
1738 mss2_decoder_select="vc1_decoder"
1739 nellymoser_decoder_select="mdct sinewin"
1740 nellymoser_encoder_select="mdct sinewin"
1741 nuv_decoder_select="lzo"
1742 png_decoder_select="zlib"
1743 png_encoder_select="zlib"
1744 qcelp_decoder_select="lsp"
1745 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1746 ra_144_encoder_select="lpc"
1747 ralf_decoder_select="golomb"
1748 rv10_decoder_select="h263_decoder"
1749 rv10_encoder_select="h263_encoder"
1750 rv20_decoder_select="h263_decoder"
1751 rv20_encoder_select="h263_encoder"
1752 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1753 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1754 shorten_decoder_select="golomb"
1755 sipr_decoder_select="lsp"
1756 snow_decoder_select="dwt rangecoder"
1757 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1758 sonic_decoder_select="golomb"
1759 sonic_encoder_select="golomb"
1760 sonic_ls_encoder_select="golomb"
1761 svq1_decoder_select="error_resilience mpegvideo"
1762 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1763 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1764 svq3_decoder_suggest="zlib"
1765 theora_decoder_select="vp3_decoder"
1766 tiff_decoder_suggest="zlib"
1767 tiff_encoder_suggest="zlib"
1768 truehd_decoder_select="mlp_parser"
1769 tscc_decoder_select="zlib"
1770 twinvq_decoder_select="mdct lsp sinewin"
1771 utvideo_encoder_select="huffman"
1772 vc1_crystalhd_decoder_select="crystalhd"
1773 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1774 vc1_dxva2_hwaccel_deps="dxva2api_h"
1775 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1776 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1777 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1778 vc1image_decoder_select="vc1_decoder"
1779 vorbis_decoder_select="mdct"
1780 vorbis_encoder_select="mdct"
1781 vp3_decoder_select="vp3dsp videodsp"
1782 vp5_decoder_select="vp3dsp videodsp"
1783 vp6_decoder_select="huffman vp3dsp videodsp"
1784 vp6a_decoder_select="vp6_decoder"
1785 vp6f_decoder_select="vp6_decoder"
1786 vp8_decoder_select="h264pred videodsp"
1787 wmapro_decoder_select="mdct sinewin"
1788 wmav1_decoder_select="mdct sinewin"
1789 wmav1_encoder_select="mdct sinewin"
1790 wmav2_decoder_select="mdct sinewin"
1791 wmav2_encoder_select="mdct sinewin"
1792 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1793 wmv1_decoder_select="h263_decoder"
1794 wmv1_encoder_select="h263_encoder"
1795 wmv2_decoder_select="h263_decoder"
1796 wmv2_encoder_select="h263_encoder"
1797 wmv3_decoder_select="vc1_decoder"
1798 wmv3_crystalhd_decoder_select="crystalhd"
1799 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1800 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1801 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1802 wmv3image_decoder_select="wmv3_decoder"
1803 zerocodec_decoder_select="zlib"
1804 zlib_decoder_select="zlib"
1805 zlib_encoder_select="zlib"
1806 zmbv_decoder_select="zlib"
1807 zmbv_encoder_select="zlib"
1808
1809 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1810 vaapi_deps="va_va_h"
1811 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1812 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1813
1814 # parsers
1815 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1816 mpeg4video_parser_select="error_resilience mpegvideo"
1817 mpegvideo_parser_select="error_resilience mpegvideo"
1818 vc1_parser_select="error_resilience mpegvideo"
1819
1820 # external libraries
1821 libaacplus_encoder_deps="libaacplus"
1822 libcelt_decoder_deps="libcelt"
1823 libfaac_encoder_deps="libfaac"
1824 libfdk_aac_encoder_deps="libfdk_aac"
1825 libgsm_decoder_deps="libgsm"
1826 libgsm_encoder_deps="libgsm"
1827 libgsm_ms_decoder_deps="libgsm"
1828 libgsm_ms_encoder_deps="libgsm"
1829 libilbc_decoder_deps="libilbc"
1830 libilbc_encoder_deps="libilbc"
1831 libmodplug_demuxer_deps="libmodplug"
1832 libmp3lame_encoder_deps="libmp3lame"
1833 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1834 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1835 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1836 libopenjpeg_decoder_deps="libopenjpeg"
1837 libopenjpeg_encoder_deps="libopenjpeg"
1838 libopus_decoder_deps="libopus"
1839 libopus_encoder_deps="libopus"
1840 libschroedinger_decoder_deps="libschroedinger"
1841 libschroedinger_encoder_deps="libschroedinger"
1842 libspeex_decoder_deps="libspeex"
1843 libspeex_encoder_deps="libspeex"
1844 libstagefright_h264_decoder_deps="libstagefright_h264"
1845 libtheora_encoder_deps="libtheora"
1846 libtwolame_encoder_deps="libtwolame"
1847 libvo_aacenc_encoder_deps="libvo_aacenc"
1848 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1849 libvorbis_decoder_deps="libvorbis"
1850 libvorbis_encoder_deps="libvorbis"
1851 libvpx_decoder_deps="libvpx"
1852 libvpx_encoder_deps="libvpx"
1853 libx264_encoder_deps="libx264"
1854 libx264rgb_encoder_deps="libx264"
1855 libxavs_encoder_deps="libxavs"
1856 libxvid_encoder_deps="libxvid"
1857 libutvideo_decoder_deps="libutvideo"
1858 libutvideo_encoder_deps="libutvideo"
1859
1860 # demuxers / muxers
1861 ac3_demuxer_select="ac3_parser"
1862 asf_stream_muxer_select="asf_muxer"
1863 avisynth_demuxer_deps="avisynth"
1864 dirac_demuxer_select="dirac_parser"
1865 dts_demuxer_select="dca_parser"
1866 dtshd_demuxer_select="dca_parser"
1867 eac3_demuxer_select="ac3_parser"
1868 f4v_muxer_select="mov_muxer"
1869 flac_demuxer_select="flac_parser"
1870 ipod_muxer_select="mov_muxer"
1871 ismv_muxer_select="mov_muxer"
1872 libnut_demuxer_deps="libnut"
1873 libnut_muxer_deps="libnut"
1874 matroska_audio_muxer_select="matroska_muxer"
1875 matroska_demuxer_suggest="bzlib lzo zlib"
1876 mov_demuxer_suggest="zlib"
1877 mp3_demuxer_select="mpegaudio_parser"
1878 mp4_muxer_select="mov_muxer"
1879 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1880 mpegtsraw_demuxer_select="mpegts_demuxer"
1881 mxf_d10_muxer_select="mxf_muxer"
1882 ogg_demuxer_select="golomb"
1883 psp_muxer_select="mov_muxer"
1884 rtp_demuxer_select="sdp_demuxer"
1885 rtp_muxer_select="mpegvideo"
1886 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1887 rtsp_demuxer_select="http_protocol rtpdec"
1888 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1889 sap_demuxer_select="sdp_demuxer"
1890 sap_muxer_select="rtp_muxer rtp_protocol"
1891 sdp_demuxer_select="rtpdec"
1892 smoothstreaming_muxer_select="ismv_muxer"
1893 spdif_muxer_select="aac_parser"
1894 tak_demuxer_select="tak_parser"
1895 tg2_muxer_select="mov_muxer"
1896 tgp_muxer_select="mov_muxer"
1897 vobsub_demuxer_select="mpegps_demuxer"
1898 w64_demuxer_deps="wav_demuxer"
1899
1900 # indevs / outdevs
1901 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1902 alsa_outdev_deps="alsa_asoundlib_h"
1903 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1904 caca_outdev_deps="libcaca"
1905 dshow_indev_deps="IBaseFilter"
1906 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1907 dv1394_indev_deps="dv1394 dv_demuxer"
1908 fbdev_indev_deps="linux_fb_h"
1909 iec61883_indev_deps="libiec61883"
1910 jack_indev_deps="jack_jack_h sem_timedwait"
1911 lavfi_indev_deps="avfilter"
1912 libcdio_indev_deps="libcdio"
1913 libdc1394_indev_deps="libdc1394"
1914 libv4l2_indev_deps="libv4l2"
1915 openal_indev_deps="openal"
1916 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1917 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1918 pulse_indev_deps="libpulse"
1919 sdl_outdev_deps="sdl"
1920 sndio_indev_deps="sndio_h"
1921 sndio_outdev_deps="sndio_h"
1922 v4l_indev_deps="linux_videodev_h"
1923 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1924 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1925 vfwcap_indev_extralibs="-lavicap32"
1926 x11grab_indev_deps="x11grab"
1927
1928 # protocols
1929 bluray_protocol_deps="libbluray"
1930 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1931 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1932 ffrtmpcrypt_protocol_select="tcp_protocol"
1933 ffrtmphttp_protocol_deps="!librtmp_protocol"
1934 ffrtmphttp_protocol_select="http_protocol"
1935 gopher_protocol_select="network"
1936 httpproxy_protocol_select="tcp_protocol"
1937 http_protocol_select="tcp_protocol"
1938 https_protocol_select="tls_protocol"
1939 librtmp_protocol_deps="librtmp"
1940 librtmpe_protocol_deps="librtmp"
1941 librtmps_protocol_deps="librtmp"
1942 librtmpt_protocol_deps="librtmp"
1943 librtmpte_protocol_deps="librtmp"
1944 mmsh_protocol_select="http_protocol"
1945 mmst_protocol_select="network"
1946 rtmp_protocol_deps="!librtmp_protocol"
1947 rtmp_protocol_select="tcp_protocol"
1948 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1949 rtmps_protocol_deps="!librtmp_protocol"
1950 rtmps_protocol_select="tls_protocol"
1951 rtmpt_protocol_select="ffrtmphttp_protocol"
1952 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1953 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1954 rtp_protocol_select="udp_protocol"
1955 sctp_protocol_deps="struct_sctp_event_subscribe"
1956 sctp_protocol_select="network"
1957 tcp_protocol_select="network"
1958 tls_protocol_deps_any="openssl gnutls"
1959 tls_protocol_select="tcp_protocol"
1960 udp_protocol_select="network"
1961
1962 # filters
1963 aconvert_filter_deps="swresample"
1964 amovie_filter_deps="avcodec avformat"
1965 aresample_filter_deps="swresample"
1966 ass_filter_deps="libass"
1967 asyncts_filter_deps="avresample"
1968 atempo_filter_deps="avcodec rdft"
1969 blackframe_filter_deps="gpl"
1970 boxblur_filter_deps="gpl"
1971 colormatrix_filter_deps="gpl"
1972 cropdetect_filter_deps="gpl"
1973 decimate_filter_deps="gpl avcodec"
1974 delogo_filter_deps="gpl"
1975 deshake_filter_deps="avcodec"
1976 drawtext_filter_deps="libfreetype"
1977 ebur128_filter_deps="gpl"
1978 flite_filter_deps="libflite"
1979 frei0r_filter_deps="frei0r dlopen"
1980 frei0r_filter_extralibs='$ldl'
1981 frei0r_src_filter_deps="frei0r dlopen"
1982 frei0r_src_filter_extralibs='$ldl'
1983 geq_filter_deps="gpl"
1984 hqdn3d_filter_deps="gpl"
1985 hue_filter_deps="gpl"
1986 movie_filter_deps="avcodec avformat"
1987 mp_filter_deps="gpl avcodec swscale postproc inline_asm"
1988 mptestsrc_filter_deps="gpl"
1989 negate_filter_deps="lut_filter"
1990 resample_filter_deps="avresample"
1991 ocv_filter_deps="libopencv"
1992 pan_filter_deps="swresample"
1993 removelogo_filter_deps="avcodec avformat swscale"
1994 scale_filter_deps="swscale"
1995 smartblur_filter_deps="gpl swscale"
1996 showspectrum_filter_deps="avcodec rdft"
1997 subtitles_filter_deps="avformat avcodec libass"
1998 super2xsai_filter_deps="gpl"
1999 tinterlace_filter_deps="gpl"
2000 yadif_filter_deps="gpl"
2001 pixfmts_super2xsai_test_deps="super2xsai_filter"
2002 tinterlace_merge_test_deps="tinterlace_filter"
2003 tinterlace_pad_test_deps="tinterlace_filter"
2004
2005 # libraries
2006 avcodec_deps="avutil"
2007 avdevice_deps="avutil avcodec avformat"
2008 avfilter_deps="avutil"
2009 avformat_deps="avutil avcodec"
2010 avresample_deps="avutil"
2011 postproc_deps="gpl"
2012 swscale_deps="avutil"
2013
2014 # programs
2015 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2016 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2017                setpts_filter null_filter anull_filter ffabuffersink_filter"
2018 ffplay_deps="avcodec avformat swscale swresample sdl"
2019 ffplay_select="ffbuffersink_filter rdft crop_filter"
2020 ffprobe_deps="avcodec avformat"
2021 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2022 ffserver_extralibs='$ldl'
2023
2024 # documentation
2025 podpages_deps="perl"
2026 manpages_deps="perl pod2man"
2027 htmlpages_deps="texi2html"
2028 txtpages_deps="makeinfo"
2029 doc_deps_any="manpages htmlpages podpages txtpages"
2030
2031 # default parameters
2032
2033 logfile="config.log"
2034
2035 # installation paths
2036 prefix_default="/usr/local"
2037 bindir_default='${prefix}/bin'
2038 datadir_default='${prefix}/share/ffmpeg'
2039 incdir_default='${prefix}/include'
2040 libdir_default='${prefix}/lib'
2041 mandir_default='${prefix}/share/man'
2042 shlibdir_default="$libdir_default"
2043 postproc_version_default="current"
2044
2045 # toolchain
2046 ar_default="ar"
2047 cc_default="gcc"
2048 cxx_default="g++"
2049 host_cc_default="gcc"
2050 cp_f="cp -f"
2051 install="install"
2052 ln_s="ln -sf"
2053 nm_default="nm -g"
2054 objformat="elf"
2055 pkg_config_default=pkg-config
2056 ranlib="ranlib"
2057 strip_default="strip"
2058 yasmexe_default="yasm"
2059
2060 nogas=":"
2061
2062 # machine
2063 arch_default=$(uname -m)
2064 cpu="generic"
2065
2066 # OS
2067 target_os_default=$(tolower $(uname -s))
2068 host_os=$target_os_default
2069
2070 # alternative libpostproc version
2071 ALT_PP_VER_MAJOR=51
2072 ALT_PP_VER_MINOR=2
2073 ALT_PP_VER_MICRO=101
2074 ALT_PP_VER=$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO
2075
2076 # configurable options
2077 enable $PROGRAM_LIST
2078 enable $DOCUMENT_LIST
2079 enable $(filter_out avresample $LIBRARY_LIST)
2080 enable postproc
2081 enable stripping
2082
2083 enable asm
2084 enable debug
2085 enable doc
2086 enable optimizations
2087 enable runtime_cpudetect
2088 enable safe_bitstream_reader
2089 enable static
2090 enable swscale_alpha
2091
2092 # build settings
2093 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2094 FFSERVERLDFLAGS=-Wl,-E
2095 LIBPREF="lib"
2096 LIBSUF=".a"
2097 FULLNAME='$(NAME)$(BUILDSUF)'
2098 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2099 SLIBPREF="lib"
2100 SLIBSUF=".so"
2101 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2102 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2103 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2104 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2105 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2106 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2107
2108 asflags_filter=echo
2109 cflags_filter=echo
2110 ldflags_filter=echo
2111
2112 AS_C='-c'
2113 AS_O='-o $@'
2114 CC_C='-c'
2115 CC_E='-E -o $@'
2116 CC_O='-o $@'
2117 CXX_C='-c'
2118 CXX_O='-o $@'
2119 LD_O='-o $@'
2120 LD_LIB='-l%'
2121 LD_PATH='-L'
2122 HOSTCC_C='-c'
2123 HOSTCC_O='-o $@'
2124 HOSTLD_O='-o $@'
2125
2126 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2127 host_libs='-lm'
2128 host_cflags_filter=echo
2129 host_ldflags_filter=echo
2130
2131 target_path='$(CURDIR)'
2132
2133 # since the object filename is not given with the -MM flag, the compiler
2134 # is only able to print the basename, and we must add the path ourselves
2135 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2136 DEPFLAGS='-MM'
2137
2138 # find source path
2139 if test -f configure; then
2140     source_path=.
2141 else
2142     source_path=$(cd $(dirname "$0"); pwd)
2143     echo "$source_path" | grep -q '[[:blank:]]' &&
2144         die "Out of tree builds are impossible with whitespace in source path."
2145     test -e "$source_path/config.h" &&
2146         die "Out of tree builds are impossible with config.h in source dir."
2147 fi
2148
2149 for v in "$@"; do
2150     r=${v#*=}
2151     l=${v%"$r"}
2152     r=$(sh_quote "$r")
2153     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2154 done
2155
2156 find_things(){
2157     thing=$1
2158     pattern=$2
2159     file=$source_path/$3
2160     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2161 }
2162
2163 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2164 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2165 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2166 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2167 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2168 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2169 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2170 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2171 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2172 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2173 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2174
2175 ALL_COMPONENTS="
2176     $BSF_LIST
2177     $DECODER_LIST
2178     $DEMUXER_LIST
2179     $ENCODER_LIST
2180     $FILTER_LIST
2181     $HWACCEL_LIST
2182     $INDEV_LIST
2183     $MUXER_LIST
2184     $OUTDEV_LIST
2185     $PARSER_LIST
2186     $PROTOCOL_LIST
2187 "
2188
2189 for n in $COMPONENT_LIST; do
2190     v=$(toupper ${n%s})_LIST
2191     eval enable \$$v
2192     eval ${n}_if_any="\$$v"
2193 done
2194
2195 enable $ARCH_EXT_LIST
2196
2197 die_unknown(){
2198     echo "Unknown option \"$1\"."
2199     echo "See $0 --help for available options."
2200     exit 1
2201 }
2202
2203 show_list() {
2204     suffix=_$1
2205     shift
2206     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2207     exit 0
2208 }
2209
2210 rand_list(){
2211     IFS=', '
2212     set -- $*
2213     unset IFS
2214     for thing; do
2215         comp=${thing%:*}
2216         prob=${thing#$comp}
2217         prob=${prob#:}
2218         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2219         echo "prob ${prob:-0.5}"
2220         printf '%s\n' $comp
2221     done
2222 }
2223
2224 do_random(){
2225     action=$1
2226     shift
2227     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2228     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2229 }
2230
2231 for opt do
2232     optval="${opt#*=}"
2233     case "$opt" in
2234         --extra-ldflags=*)
2235             add_ldflags $optval
2236         ;;
2237         --extra-libs=*)
2238             add_extralibs $optval
2239         ;;
2240         --disable-devices)
2241             disable $INDEV_LIST $OUTDEV_LIST
2242         ;;
2243         --enable-debug=*)
2244             debuglevel="$optval"
2245         ;;
2246         --disable-programs)
2247             disable $PROGRAM_LIST
2248         ;;
2249         --disable-everything)
2250             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2251         ;;
2252         --enable-random|--disable-random)
2253             action=${opt%%-random}
2254             do_random ${action#--} $COMPONENT_LIST
2255         ;;
2256         --enable-random=*|--disable-random=*)
2257             action=${opt%%-random=*}
2258             do_random ${action#--} $optval
2259         ;;
2260         --enable-*=*|--disable-*=*)
2261             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2262             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2263             eval list=\$$(toupper $thing)_LIST
2264             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2265             list=$(filter "$name" $list)
2266             [ "$list" = "" ] && warn "Option $opt did not match anything"
2267             $action $list
2268         ;;
2269         --enable-?*|--disable-?*)
2270             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2271             if is_in $option $COMPONENT_LIST; then
2272                 test $action = disable && action=unset
2273                 eval $action \$$(toupper ${option%s})_LIST
2274             elif is_in $option $CMDLINE_SELECT; then
2275                 $action $option
2276             else
2277                 die_unknown $opt
2278             fi
2279         ;;
2280         --list-*)
2281             NAME="${opt#--list-}"
2282             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2283             NAME=${NAME%s}
2284             eval show_list $NAME \$$(toupper $NAME)_LIST
2285         ;;
2286         --help|-h) show_help
2287         ;;
2288         --fatal-warnings) enable fatal_warnings
2289         ;;
2290         *)
2291             optname="${opt%%=*}"
2292             optname="${optname#--}"
2293             optname=$(echo "$optname" | sed 's/-/_/g')
2294             if is_in $optname $CMDLINE_SET; then
2295                 eval $optname='$optval'
2296             elif is_in $optname $CMDLINE_APPEND; then
2297                 append $optname "$optval"
2298             else
2299                 die_unknown $opt
2300             fi
2301         ;;
2302     esac
2303 done
2304
2305 disabled logging && logfile=/dev/null
2306
2307 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2308 set >> $logfile
2309
2310 test -n "$cross_prefix" && enable cross_compile
2311
2312 if enabled cross_compile; then
2313     test -n "$arch" && test -n "$target_os" ||
2314         die "Must specify target arch and OS when cross-compiling"
2315 fi
2316
2317 set_default postproc_version
2318
2319 # Check if we should build alternative libpostproc version instead of current
2320 if   test "$postproc_version" = $ALT_PP_VER; then
2321   LIBPOSTPROC_VERSION=$ALT_PP_VER
2322   LIBPOSTPROC_VERSION_MAJOR=$ALT_PP_VER_MAJOR
2323   LIBPOSTPROC_VERSION_MINOR=$ALT_PP_VER_MINOR
2324   LIBPOSTPROC_VERSION_MICRO=$ALT_PP_VER_MICRO
2325 elif test "$postproc_version" != current; then
2326   die "Invalid argument to --postproc-version. See --help output."
2327 fi
2328
2329 ar_default="${cross_prefix}${ar_default}"
2330 cc_default="${cross_prefix}${cc_default}"
2331 cxx_default="${cross_prefix}${cxx_default}"
2332 nm_default="${cross_prefix}${nm_default}"
2333 pkg_config_default="${cross_prefix}${pkg_config_default}"
2334 ranlib="${cross_prefix}${ranlib}"
2335 strip_default="${cross_prefix}${strip_default}"
2336
2337 sysinclude_default="${sysroot}/usr/include"
2338
2339 case "$toolchain" in
2340     clang-asan)
2341         cc_default="clang"
2342         add_cflags  -faddress-sanitizer
2343         add_ldflags -faddress-sanitizer
2344     ;;
2345     clang-tsan)
2346         cc_default="clang"
2347         add_cflags  -fthread-sanitizer
2348         add_ldflags -fthread-sanitizer
2349     ;;
2350     msvc)
2351         cc_default="c99wrap cl"
2352         ld_default="c99wrap link"
2353         nm_default="dumpbin -symbols"
2354         ar_default="lib"
2355         target_os_default="win32"
2356     ;;
2357     ?*)
2358         die "Unknown toolchain $toolchain"
2359     ;;
2360 esac
2361
2362 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2363 enabled cross_compile || host_cc_default=$cc
2364 set_default host_cc
2365
2366 if ! $pkg_config --version >/dev/null 2>&1; then
2367     warn "$pkg_config not found, library detection may fail."
2368     pkg_config=false
2369 fi
2370
2371 exesuf() {
2372     case $1 in
2373         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2374     esac
2375 }
2376
2377 EXESUF=$(exesuf $target_os)
2378 HOSTEXESUF=$(exesuf $host_os)
2379
2380 # set temporary file name
2381 : ${TMPDIR:=$TEMPDIR}
2382 : ${TMPDIR:=$TMP}
2383 : ${TMPDIR:=/tmp}
2384
2385 if ! check_cmd mktemp -u XXXXXX; then
2386     # simple replacement for missing mktemp
2387     # NOT SAFE FOR GENERAL USE
2388     mktemp(){
2389         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2390     }
2391 fi
2392
2393 tmpfile(){
2394     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2395         (set -C; exec > $tmp) 2>/dev/null ||
2396         die "Unable to create temporary file in $TMPDIR."
2397     append TMPFILES $tmp
2398     eval $1=$tmp
2399 }
2400
2401 trap 'rm -f -- $TMPFILES' EXIT
2402
2403 tmpfile TMPASM .asm
2404 tmpfile TMPC   .c
2405 tmpfile TMPCPP .cpp
2406 tmpfile TMPE   $EXESUF
2407 tmpfile TMPH   .h
2408 tmpfile TMPO   .o
2409 tmpfile TMPS   .S
2410 tmpfile TMPSH  .sh
2411 tmpfile TMPV   .ver
2412
2413 unset -f mktemp
2414
2415 chmod +x $TMPE
2416
2417 # make sure we can execute files in $TMPDIR
2418 cat > $TMPSH 2>> $logfile <<EOF
2419 #! /bin/sh
2420 EOF
2421 chmod +x $TMPSH >> $logfile 2>&1
2422 if ! $TMPSH >> $logfile 2>&1; then
2423     cat <<EOF
2424 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2425 variable to another directory and make sure that it is not mounted noexec.
2426 EOF
2427     die "Sanity test failed."
2428 fi
2429
2430 ccc_flags(){
2431     for flag; do
2432         case $flag in
2433             -std=c99)           echo -c99                       ;;
2434             -mcpu=*)            echo -arch ${flag#*=}           ;;
2435             -mieee)             echo -ieee                      ;;
2436             -O*|-fast)          echo $flag                      ;;
2437             -fno-math-errno)    echo -assume nomath_errno       ;;
2438             -g)                 echo -g3                        ;;
2439             -Wall)              echo -msg_enable level2         ;;
2440             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2441             -Wl,*)              echo $flag                      ;;
2442             -f*|-W*)                                            ;;
2443             *)                  echo $flag                      ;;
2444         esac
2445    done
2446 }
2447
2448 msvc_flags(){
2449     for flag; do
2450         case $flag in
2451             -fomit-frame-pointer) echo -Oy ;;
2452             -g)                   echo -Z7 ;;
2453             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2454                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2455                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2456                                        -wd4554 \
2457                                        -wd4996 -wd4273 ;;
2458             -std=c99)             ;;
2459             -fno-math-errno)      ;;
2460             -fno-common)          ;;
2461             -fno-signed-zeros)    ;;
2462             -lz)                  echo zlib.lib ;;
2463             -lavifil32)           echo vfw32.lib ;;
2464             -lavicap32)           echo vfw32.lib user32.lib ;;
2465             -l*)                  echo ${flag#-l}.lib ;;
2466             *)                    echo $flag ;;
2467         esac
2468     done
2469 }
2470
2471 pgi_flags(){
2472     for flag; do
2473         case $flag in
2474             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2475             -fomit-frame-pointer) echo -Mnoframe ;;
2476             -g)                   echo -gopt ;;
2477             *)                    echo $flag ;;
2478         esac
2479     done
2480 }
2481
2482 suncc_flags(){
2483     for flag; do
2484         case $flag in
2485             -march=*|-mcpu=*)
2486                 case "${flag#*=}" in
2487                     native)                   echo -xtarget=native       ;;
2488                     v9|niagara)               echo -xarch=sparc          ;;
2489                     ultrasparc)               echo -xarch=sparcvis       ;;
2490                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2491                     i586|pentium)             echo -xchip=pentium        ;;
2492                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2493                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2494                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2495                     pentium4*)          echo -xtarget=pentium4           ;;
2496                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2497                     *-sse3)             echo -xarch=sse3                 ;;
2498                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2499                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2500                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2501                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2502                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2503                     k8|opteron|athlon64|athlon-fx)
2504                                               echo -xarch=sse2a          ;;
2505                     athlon*)                  echo -xarch=pentium_proa   ;;
2506                 esac
2507                 ;;
2508             -std=c99)             echo -xc99              ;;
2509             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2510             -fPIC)                echo -KPIC -xcode=pic32 ;;
2511             -W*,*)                echo $flag              ;;
2512             -f*-*|-W*)                                    ;;
2513             *)                    echo $flag              ;;
2514         esac
2515     done
2516 }
2517
2518 tms470_flags(){
2519     for flag; do
2520         case $flag in
2521             -march=*|-mcpu=*)
2522                 case "${flag#*=}" in
2523                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2524                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2525                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2526                     armv6*|arm11*)          echo -mv=6   ;;
2527                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2528                                             echo -mv=5e  ;;
2529                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2530                 esac
2531                 ;;
2532             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2533             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2534             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2535             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2536             -msoft-float)   echo --float_support=vfplib       ;;
2537             -O[0-3]|-mf=*)  echo $flag                        ;;
2538             -g)             echo -g -mn                       ;;
2539             -pds=*)         echo $flag                        ;;
2540             -D*|-I*)        echo $flag                        ;;
2541             --gcc|--abi=*)  echo $flag                        ;;
2542             -me)            echo $flag                        ;;
2543         esac
2544     done
2545 }
2546
2547 probe_cc(){
2548     pfx=$1
2549     _cc=$2
2550
2551     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2552     unset _ld_o _ldflags _ld_lib _ld_path
2553     unset _depflags _DEPCMD _DEPFLAGS
2554     _flags_filter=echo
2555
2556     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2557         _type=llvm_gcc
2558         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2559         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2560         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2561         _cflags_speed='-O3'
2562         _cflags_size='-Os'
2563     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2564         _type=gcc
2565         gcc_version=$($_cc --version | head -n1)
2566         gcc_basever=$($_cc -dumpversion)
2567         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2568         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2569         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2570         if ! $_cc -dumpversion | grep -q '^2\.'; then
2571             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2572         fi
2573         _cflags_speed='-O3'
2574         _cflags_size='-Os'
2575     elif $_cc --version 2>/dev/null | grep -q Intel; then
2576         _type=icc
2577         _ident=$($_cc --version | head -n1)
2578         _depflags='-MMD'
2579         _cflags_speed='-O3'
2580         _cflags_size='-Os'
2581         _cflags_noopt='-O1'
2582     elif $_cc -v 2>&1 | grep -q xlc; then
2583         _type=xlc
2584         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2585         _cflags_speed='-O5'
2586         _cflags_size='-O5 -qcompact'
2587     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2588         _type=ccc
2589         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2590         _DEPFLAGS='-M'
2591         _cflags_speed='-fast'
2592         _cflags_size='-O1'
2593         _flags_filter=ccc_flags
2594     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2595         test -d "$sysroot" || die "No valid sysroot specified."
2596         _type=armcc
2597         _ident=$($_cc --vsn | head -n1)
2598         armcc_conf="$PWD/armcc.conf"
2599         $_cc --arm_linux_configure                 \
2600              --arm_linux_config_file="$armcc_conf" \
2601              --configure_sysroot="$sysroot"        \
2602              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2603              die "Error creating armcc configuration file."
2604         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2605         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2606         as_default="${cross_prefix}gcc"
2607         _depflags='-MMD'
2608         _cflags_speed='-O3'
2609         _cflags_size='-Os'
2610     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2611         _type=tms470
2612         _ident=$($_cc -version | head -n1 | tr -s ' ')
2613         _flags='--gcc --abi=eabi -me'
2614         _cc_e='-ppl -fe=$@'
2615         _cc_o='-fe=$@'
2616         _depflags='-ppa -ppd=$(@:.o=.d)'
2617         _cflags_speed='-O3 -mf=5'
2618         _cflags_size='-O3 -mf=2'
2619         _flags_filter=tms470_flags
2620     elif $_cc -v 2>&1 | grep -q clang; then
2621         _type=clang
2622         _ident=$($_cc --version | head -n1)
2623         _depflags='-MMD'
2624         _cflags_speed='-O3'
2625         _cflags_size='-Os'
2626     elif $_cc -V 2>&1 | grep -q Sun; then
2627         _type=suncc
2628         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2629         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2630         _DEPFLAGS='-xM1 -xc99'
2631         _ldflags='-std=c99'
2632         _cflags_speed='-O5'
2633         _cflags_size='-O5 -xspace'
2634         _flags_filter=suncc_flags
2635     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2636         _type=pathscale
2637         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2638         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2639         _cflags_speed='-O2'
2640         _cflags_size='-Os'
2641         _flags_filter='filter_out -Wdisabled-optimization'
2642     elif $_cc -v 2>&1 | grep -q Open64; then
2643         _type=open64
2644         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2645         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2646         _cflags_speed='-O2'
2647         _cflags_size='-Os'
2648         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2649     elif $_cc -V 2>&1 | grep -q Portland; then
2650         _type=pgi
2651         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2652         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2653         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2654         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2655         _cflags_noopt="-O1"
2656         _flags_filter=pgi_flags
2657     elif $_cc 2>&1 | grep -q Microsoft; then
2658         _type=msvc
2659         _ident=$($cc 2>&1 | head -n1)
2660         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2661         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2662         _cflags_speed="-O2"
2663         _cflags_size="-O1"
2664         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2665         if $_cc 2>&1 | grep -q Linker; then
2666             _ld_o='-out $@'
2667         else
2668             _ld_o='-Fe$@'
2669         fi
2670         _cc_o='-Fo $@'
2671         _cc_e='-P -Fi $@'
2672         _flags_filter=msvc_flags
2673         _ld_lib='lib%.a'
2674         _ld_path='-libpath:'
2675         _flags='-nologo'
2676         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2677         if [ $pfx = hostcc ]; then
2678             append _cflags -Dsnprintf=_snprintf
2679         fi
2680         disable stripping
2681     fi
2682
2683     eval ${pfx}_type=\$_type
2684     eval ${pfx}_ident=\$_ident
2685 }
2686
2687 set_ccvars(){
2688     eval ${1}_C=\${_cc_c-\${${1}_C}}
2689     eval ${1}_E=\${_cc_e-\${${1}_E}}
2690     eval ${1}_O=\${_cc_o-\${${1}_O}}
2691
2692     if [ -n "$_depflags" ]; then
2693         eval ${1}_DEPFLAGS=\$_depflags
2694     else
2695         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2696         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2697         eval DEP${1}FLAGS=\$_flags
2698     fi
2699 }
2700
2701 probe_cc cc "$cc"
2702 cflags_filter=$_flags_filter
2703 cflags_speed=$_cflags_speed
2704 cflags_size=$_cflags_size
2705 cflags_noopt=$_cflags_noopt
2706 add_cflags $_flags $_cflags
2707 cc_ldflags=$_ldflags
2708 set_ccvars CC
2709
2710 probe_cc hostcc "$host_cc"
2711 host_cflags_filter=$_flags_filter
2712 add_host_cflags  $_flags $_cflags
2713 set_ccvars HOSTCC
2714
2715 test -n "$cc_type" && enable $cc_type ||
2716     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2717
2718 : ${as_default:=$cc}
2719 : ${dep_cc_default:=$cc}
2720 : ${ld_default:=$cc}
2721 : ${host_ld_default:=$host_cc}
2722 set_default ar as dep_cc ld host_ld
2723
2724 probe_cc as "$as"
2725 asflags_filter=$_flags_filter
2726 add_asflags $_flags $_cflags
2727 set_ccvars AS
2728
2729 probe_cc ld "$ld"
2730 ldflags_filter=$_flags_filter
2731 add_ldflags $_flags $_ldflags
2732 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2733 LD_O=${_ld_o-$LD_O}
2734 LD_LIB=${_ld_lib-$LD_LIB}
2735 LD_PATH=${_ld_path-$LD_PATH}
2736
2737 probe_cc hostld "$host_ld"
2738 host_ldflags_filter=$_flags_filter
2739 add_host_ldflags $_flags $_ldflags
2740 HOSTLD_O=${_ld_o-$HOSTLD_O}
2741
2742 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2743     probe_cc depcc "$dep_cc"
2744     CCDEP=${_DEPCMD:-$DEPCMD}
2745     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2746     DEPCCFLAGS=$_flags
2747 fi
2748
2749 if $ar 2>&1 | grep -q Microsoft; then
2750     arflags="-nologo"
2751     ar_o='-out:$@'
2752 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2753     arflags="rq"
2754     ar_o='$@'
2755 else
2756     arflags="rc"
2757     ar_o='$@'
2758 fi
2759
2760 add_cflags $extra_cflags
2761 add_cxxflags $extra_cxxflags
2762 add_asflags $extra_cflags
2763
2764 if test -n "$sysroot"; then
2765     case "$cc_type" in
2766         gcc|llvm_gcc|clang)
2767             add_cppflags --sysroot="$sysroot"
2768             add_ldflags --sysroot="$sysroot"
2769         ;;
2770         tms470)
2771             add_cppflags -I"$sysinclude"
2772             add_ldflags  --sysroot="$sysroot"
2773         ;;
2774     esac
2775 fi
2776
2777 if test "$cpu" = host; then
2778     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2779
2780     case "$cc_type" in
2781         gcc|llvm_gcc)
2782             check_native(){
2783                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2784                 sed -n "/cc1.*$1=/{
2785                             s/.*$1=\\([^ ]*\\).*/\\1/
2786                             p
2787                             q
2788                         }" $TMPE
2789             }
2790             cpu=$(check_native -march || check_native -mcpu)
2791         ;;
2792     esac
2793
2794     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2795 fi
2796
2797 # Deal with common $arch aliases
2798 case "$arch" in
2799     aarch64|arm64)
2800         arch="aarch64"
2801     ;;
2802     arm*|iPad*)
2803         arch="arm"
2804     ;;
2805     mips*|IP*)
2806         arch="mips"
2807     ;;
2808     parisc*|hppa*)
2809         arch="parisc"
2810     ;;
2811     "Power Macintosh"|ppc*|powerpc*)
2812         arch="ppc"
2813     ;;
2814     s390|s390x)
2815         arch="s390"
2816     ;;
2817     sh4|sh)
2818         arch="sh4"
2819     ;;
2820     sun4u|sparc*)
2821         arch="sparc"
2822     ;;
2823     tilegx|tile-gx)
2824         arch="tilegx"
2825     ;;
2826     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2827         arch="x86"
2828     ;;
2829 esac
2830
2831 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2832 enable $arch
2833
2834 # Add processor-specific flags
2835 if enabled aarch64; then
2836
2837     case $cpu in
2838         armv*)
2839             cpuflags="-march=$cpu"
2840         ;;
2841         *)
2842             cpuflags="-mcpu=$cpu"
2843         ;;
2844     esac
2845
2846 elif enabled alpha; then
2847
2848     cpuflags="-mcpu=$cpu"
2849
2850 elif enabled arm; then
2851
2852     check_arm_arch() {
2853         check_cpp_condition stddef.h \
2854             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2855             $cpuflags
2856     }
2857
2858     probe_arm_arch() {
2859         if   check_arm_arch 4;        then echo armv4;
2860         elif check_arm_arch 4T;       then echo armv4t;
2861         elif check_arm_arch 5;        then echo armv5;
2862         elif check_arm_arch 5E;       then echo armv5e;
2863         elif check_arm_arch 5T;       then echo armv5t;
2864         elif check_arm_arch 5TE;      then echo armv5te;
2865         elif check_arm_arch 5TEJ;     then echo armv5te;
2866         elif check_arm_arch 6;        then echo armv6;
2867         elif check_arm_arch 6J;       then echo armv6j;
2868         elif check_arm_arch 6K;       then echo armv6k;
2869         elif check_arm_arch 6Z;       then echo armv6z;
2870         elif check_arm_arch 6ZK;      then echo armv6zk;
2871         elif check_arm_arch 6T2;      then echo armv6t2;
2872         elif check_arm_arch 7;        then echo armv7;
2873         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2874         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2875         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2876         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2877         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2878         fi
2879     }
2880
2881     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2882
2883     case $cpu in
2884         armv*)
2885             cpuflags="-march=$cpu"
2886             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2887         ;;
2888         *)
2889             cpuflags="-mcpu=$cpu"
2890             case $cpu in
2891                 cortex-a*)                               subarch=armv7a  ;;
2892                 cortex-r*)                               subarch=armv7r  ;;
2893                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2894                 arm11*)                                  subarch=armv6   ;;
2895                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2896                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2897                 *)                             subarch=$(probe_arm_arch) ;;
2898             esac
2899         ;;
2900     esac
2901
2902     case "$subarch" in
2903         armv5t*)    enable fast_clz                ;;
2904         armv[6-8]*) enable fast_clz fast_unaligned ;;
2905     esac
2906
2907 elif enabled avr32; then
2908
2909     case $cpu in
2910         ap7[02]0[0-2])
2911             subarch="avr32_ap"
2912             cpuflags="-mpart=$cpu"
2913         ;;
2914         ap)
2915             subarch="avr32_ap"
2916             cpuflags="-march=$cpu"
2917         ;;
2918         uc3[ab]*)
2919             subarch="avr32_uc"
2920             cpuflags="-mcpu=$cpu"
2921         ;;
2922         uc)
2923             subarch="avr32_uc"
2924             cpuflags="-march=$cpu"
2925         ;;
2926     esac
2927
2928 elif enabled bfin; then
2929
2930     cpuflags="-mcpu=$cpu"
2931
2932 elif enabled mips; then
2933
2934     cpuflags="-march=$cpu"
2935
2936     case $cpu in
2937         24kc)
2938             disable mipsfpu
2939             disable mipsdspr1
2940             disable mipsdspr2
2941         ;;
2942         24kf*)
2943             disable mipsdspr1
2944             disable mipsdspr2
2945         ;;
2946         24kec|34kc|1004kc)
2947             disable mipsfpu
2948             disable mipsdspr2
2949         ;;
2950         24kef*|34kf*|1004kf*)
2951             disable mipsdspr2
2952         ;;
2953         74kc)
2954             disable mipsfpu
2955         ;;
2956     esac
2957
2958 elif enabled ppc; then
2959
2960     case $(tolower $cpu) in
2961         601|ppc601|powerpc601)
2962             cpuflags="-mcpu=601"
2963             disable altivec
2964         ;;
2965         603*|ppc603*|powerpc603*)
2966             cpuflags="-mcpu=603"
2967             disable altivec
2968         ;;
2969         604*|ppc604*|powerpc604*)
2970             cpuflags="-mcpu=604"
2971             disable altivec
2972         ;;
2973         g3|75*|ppc75*|powerpc75*)
2974             cpuflags="-mcpu=750"
2975             disable altivec
2976         ;;
2977         g4|745*|ppc745*|powerpc745*)
2978             cpuflags="-mcpu=7450"
2979         ;;
2980         74*|ppc74*|powerpc74*)
2981             cpuflags="-mcpu=7400"
2982         ;;
2983         g5|970|ppc970|powerpc970)
2984             cpuflags="-mcpu=970"
2985         ;;
2986         power[3-7]*)
2987             cpuflags="-mcpu=$cpu"
2988         ;;
2989         cell)
2990             cpuflags="-mcpu=cell"
2991             enable ldbrx
2992         ;;
2993         e500mc)
2994             cpuflags="-mcpu=e500mc"
2995             disable altivec
2996         ;;
2997         e500v2)
2998             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2999             disable altivec
3000         ;;
3001         e500)
3002             cpuflags="-mcpu=8540 -mhard-float"
3003             disable altivec
3004         ;;
3005     esac
3006
3007 elif enabled sparc; then
3008
3009     case $cpu in
3010         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3011             cpuflags="-mcpu=$cpu"
3012             disable vis
3013         ;;
3014         ultrasparc*|niagara[234])
3015             cpuflags="-mcpu=$cpu"
3016         ;;
3017     esac
3018
3019 elif enabled x86; then
3020
3021     case $cpu in
3022         i[345]86|pentium)
3023             cpuflags="-march=$cpu"
3024             disable mmx
3025         ;;
3026         # targets that do NOT support conditional mov (cmov)
3027         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3028             cpuflags="-march=$cpu"
3029             disable cmov
3030         ;;
3031         # targets that do support conditional mov (cmov)
3032         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3033             cpuflags="-march=$cpu"
3034             enable cmov
3035             enable fast_cmov
3036         ;;
3037         # targets that do support conditional mov but on which it's slow
3038         pentium4|pentium4m|prescott|nocona)
3039             cpuflags="-march=$cpu"
3040             enable cmov
3041             disable fast_cmov
3042         ;;
3043     esac
3044
3045 fi
3046
3047 if [ "$cpu" != generic ]; then
3048     add_cflags  $cpuflags
3049     add_asflags $cpuflags
3050 fi
3051
3052 # compiler sanity check
3053 check_exec <<EOF
3054 int main(void){ return 0; }
3055 EOF
3056 if test "$?" != 0; then
3057     echo "$cc is unable to create an executable file."
3058     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3059         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3060         echo "Only do this if you know what cross compiling means."
3061     fi
3062     die "C compiler test failed."
3063 fi
3064
3065 add_cppflags -D_ISOC99_SOURCE
3066 add_cxxflags -D__STDC_CONSTANT_MACROS
3067 check_cflags -std=c99
3068 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3069 #include <stdlib.h>
3070 EOF
3071 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3072 #include <stdlib.h>
3073 EOF
3074
3075 check_host_cflags -std=c99
3076 check_host_cflags -Wall
3077
3078 check_64bit(){
3079     arch32=$1
3080     arch64=$2
3081     expr=$3
3082     check_code cc "" "int test[2*($expr) - 1]" &&
3083         subarch=$arch64 || subarch=$arch32
3084 }
3085
3086 case "$arch" in
3087     alpha|ia64)
3088         spic=$shared
3089     ;;
3090     mips)
3091         check_64bit mips mips64 '_MIPS_SIM > 1'
3092         spic=$shared
3093     ;;
3094     parisc)
3095         check_64bit parisc parisc64 'sizeof(void *) > 4'
3096         spic=$shared
3097     ;;
3098     ppc)
3099         check_64bit ppc ppc64 'sizeof(void *) > 4'
3100         spic=$shared
3101     ;;
3102     sparc)
3103         check_64bit sparc sparc64 'sizeof(void *) > 4'
3104         spic=$shared
3105     ;;
3106     x86)
3107         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3108         if test "$subarch" = "x86_64"; then
3109             spic=$shared
3110         fi
3111     ;;
3112     ppc)
3113         check_cc <<EOF && subarch="ppc64"
3114         int test[(int)sizeof(char*) - 7];
3115 EOF
3116     ;;
3117 esac
3118
3119 enable $subarch
3120 enabled spic && enable pic
3121
3122 # OS specific
3123 case $target_os in
3124     haiku)
3125         prefix_default="/boot/common"
3126         network_extralibs="-lnetwork"
3127         host_libs=
3128         ;;
3129     sunos)
3130         FFSERVERLDFLAGS=""
3131         SHFLAGS='-shared -Wl,-h,$$(@F)'
3132         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3133         network_extralibs="-lsocket -lnsl"
3134         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3135         # When using suncc to build, the Solaris linker will mark
3136         # an executable with each instruction set encountered by
3137         # the Solaris assembler.  As our libraries contain their own
3138         # guards for processor-specific code, instead suppress
3139         # generation of the HWCAPS ELF section on Solaris x86 only.
3140         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3141         nm_default='nm -P -g'
3142         ;;
3143     netbsd)
3144         disable symver
3145         oss_indev_extralibs="-lossaudio"
3146         oss_outdev_extralibs="-lossaudio"
3147         enabled gcc || check_ldflags -Wl,-zmuldefs
3148         ;;
3149     openbsd|bitrig)
3150         # On OpenBSD 4.5. the compiler does not use PIC unless
3151         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3152         # however the generated executable will not do anything
3153         # (simply quits with exit-code 1, no crash, no output).
3154         # Thus explicitly enable PIC here.
3155         enable pic
3156         disable symver
3157         SHFLAGS='-shared'
3158         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3159         SLIB_INSTALL_LINKS=
3160         oss_indev_extralibs="-lossaudio"
3161         oss_outdev_extralibs="-lossaudio"
3162         ;;
3163     dragonfly)
3164         disable symver
3165         ;;
3166     freebsd)
3167         ;;
3168     bsd/os)
3169         add_extralibs -lpoll -lgnugetopt
3170         strip="strip -d"
3171         ;;
3172     darwin)
3173         gas="gas-preprocessor.pl $cc"
3174         enabled ppc && add_asflags -force_cpusubtype_ALL
3175         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3176         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3177         strip="${strip} -x"
3178         add_ldflags -Wl,-dynamic,-search_paths_first
3179         SLIBSUF=".dylib"
3180         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3181         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3182         FFSERVERLDFLAGS=-Wl,-bind_at_load
3183         objformat="macho"
3184         enabled x86_64 && objformat="macho64"
3185         enabled_any pic shared ||
3186             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3187         ;;
3188     mingw32*)
3189         if test $target_os = "mingw32ce"; then
3190             disable network
3191         else
3192             target_os=mingw32
3193         fi
3194         LIBTARGET=i386
3195         if enabled x86_64; then
3196             LIBTARGET="i386:x86-64"
3197         elif enabled arm; then
3198             LIBTARGET=arm-wince
3199         fi
3200         shlibdir_default="$bindir_default"
3201         SLIBPREF=""
3202         SLIBSUF=".dll"
3203         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3204         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3205         dlltool="${cross_prefix}dlltool"
3206         if check_cmd lib.exe -list; then
3207             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3208             if enabled x86_64; then
3209                 LIBTARGET=x64
3210             fi
3211         elif check_cmd $dlltool --version; then
3212             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3213         fi
3214         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3215         SLIB_INSTALL_LINKS=
3216         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3217         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3218         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3219         objformat="win32"
3220         ranlib=:
3221         enable dos_paths
3222         add_cppflags -U__STRICT_ANSI__
3223         ;;
3224     win32|win64)
3225         if enabled shared; then
3226             # Link to the import library instead of the normal static library
3227             # for shared libs.
3228             LD_LIB='%.lib'
3229             # Cannot build shared and static libraries at the same time with
3230             # MSVC.
3231             disable static
3232         fi
3233         shlibdir_default="$bindir_default"
3234         SLIBPREF=""
3235         SLIBSUF=".dll"
3236         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3237         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3238         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3239         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3240         SLIB_INSTALL_LINKS=
3241         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3242         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3243         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3244         objformat="win32"
3245         ranlib=:
3246         enable dos_paths
3247         ;;
3248     cygwin*)
3249         target_os=cygwin
3250         shlibdir_default="$bindir_default"
3251         SLIBPREF="cyg"
3252         SLIBSUF=".dll"
3253         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3254         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3255         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3256         SLIB_INSTALL_LINKS=
3257         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3258         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3259         objformat="win32"
3260         enable dos_paths
3261         ;;
3262     *-dos|freedos|opendos)
3263         network_extralibs="-lsocket"
3264         objformat="coff"
3265         enable dos_paths
3266         add_cppflags -U__STRICT_ANSI__
3267         ;;
3268     linux)
3269         enable dv1394
3270         ;;
3271     irix*)
3272         target_os=irix
3273         ranlib="echo ignoring ranlib"
3274         ;;
3275     os/2*)
3276         strip="lxlite -CS"
3277         ln_s="cp -f"
3278         objformat="aout"
3279         add_cppflags -D_GNU_SOURCE
3280         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3281         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3282         FFSERVERLDFLAGS=""
3283         LIBSUF="_s.a"
3284         SLIBPREF=""
3285         SLIBSUF=".dll"
3286         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3287         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3288         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3289             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3290             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3291             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3292             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3293             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3294         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3295             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3296         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3297         enable dos_paths
3298         enable_weak os2threads
3299         ;;
3300     gnu/kfreebsd)
3301         add_cppflags -D_BSD_SOURCE
3302         ;;
3303     gnu)
3304         ;;
3305     qnx)
3306         add_cppflags -D_QNX_SOURCE
3307         network_extralibs="-lsocket"
3308         ;;
3309     symbian)
3310         SLIBSUF=".dll"
3311         enable dos_paths
3312         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3313         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3314         add_ldflags -Wl,--target1-abs,--no-undefined \
3315                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3316                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3317         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3318                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3319                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3320         ;;
3321     osf1)
3322         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3323         FFSERVERLDFLAGS=
3324         ;;
3325     minix)
3326         ;;
3327     plan9)
3328         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3329                      -D_REENTRANT_SOURCE        \
3330                      -D_RESEARCH_SOURCE         \
3331                      -DFD_SETSIZE=96            \
3332                      -DHAVE_SOCK_OPTS
3333         add_compat strtod.o strtod=avpriv_strtod
3334         network_extralibs='-lbsd'
3335         exeobjs=compat/plan9/main.o
3336         disable ffserver
3337         ln_s='ln -s -f'
3338         cp_f='cp'
3339         ;;
3340     none)
3341         ;;
3342     *)
3343         die "Unknown OS '$target_os'."
3344         ;;
3345 esac
3346
3347 # determine libc flavour
3348
3349 if check_cpp_condition features.h "defined __UCLIBC__"; then
3350     libc_type=uclibc
3351     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3352 elif check_cpp_condition features.h "defined __GLIBC__"; then
3353     libc_type=glibc
3354     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3355 elif check_header _mingw.h; then
3356     libc_type=mingw
3357     check_cpp_condition _mingw.h \
3358         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3359             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3360         die "ERROR: MinGW runtime version must be >= 3.15."
3361     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3362             __MINGW64_VERSION_MAJOR < 3"; then
3363         add_compat msvcrt/snprintf.o
3364         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3365     fi
3366 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3367     libc_type=newlib
3368     add_cppflags -U__STRICT_ANSI__
3369 elif check_func_headers stdlib.h _get_doserrno; then
3370     libc_type=msvcrt
3371     add_compat strtod.o strtod=avpriv_strtod
3372     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3373                                  _snprintf=avpriv_snprintf  \
3374                                  vsnprintf=avpriv_vsnprintf
3375 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3376     libc_type=klibc
3377 fi
3378
3379 test -n "$libc_type" && enable $libc_type
3380
3381 # hacks for compiler/libc/os combinations
3382
3383 if enabled_all tms470 glibc; then
3384     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3385     add_cppflags -D__USER_LABEL_PREFIX__=
3386     add_cppflags -D__builtin_memset=memset
3387     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3388     add_cflags   -pds=48    # incompatible redefinition of macro
3389 fi
3390
3391 if enabled_all ccc glibc; then
3392     add_ldflags -Wl,-z,now  # calls to libots crash without this
3393 fi
3394
3395 esc(){
3396     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3397 }
3398
3399 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3400
3401 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3402
3403 set_default $PATHS_LIST
3404 set_default nm
3405
3406 # we need to build at least one lib type
3407 if ! enabled_any static shared; then
3408     cat <<EOF
3409 At least one library type must be built.
3410 Specify --enable-static to build the static libraries or --enable-shared to
3411 build the shared libraries as well. To only build the shared libraries specify
3412 --disable-static in addition to --enable-shared.
3413 EOF
3414     exit 1;
3415 fi
3416
3417 die_license_disabled() {
3418     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3419 }
3420
3421 die_license_disabled_gpl() {
3422     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3423 }
3424
3425 die_license_disabled gpl libcdio
3426 die_license_disabled gpl libutvideo
3427 die_license_disabled gpl libx264
3428 die_license_disabled gpl libxavs
3429 die_license_disabled gpl libxvid
3430 die_license_disabled gpl x11grab
3431
3432 die_license_disabled nonfree libaacplus
3433 die_license_disabled nonfree libfaac
3434 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3435 enabled gpl && die_license_disabled_gpl nonfree openssl
3436
3437 die_license_disabled version3 libopencore_amrnb
3438 die_license_disabled version3 libopencore_amrwb
3439 die_license_disabled version3 libvo_aacenc
3440 die_license_disabled version3 libvo_amrwbenc
3441
3442 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3443
3444 disabled optimizations || check_cflags -fomit-frame-pointer
3445
3446 enable_pic() {
3447     enable pic
3448     add_cppflags -DPIC
3449     add_cflags   -fPIC
3450     add_asflags  -fPIC
3451 }
3452
3453 enabled pic && enable_pic
3454
3455 check_cc <<EOF || die "Symbol mangling check failed."
3456 int ff_extern;
3457 EOF
3458 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3459 extern_prefix=${sym%%ff_extern*}
3460
3461 check_cc <<EOF && enable_weak inline_asm
3462 void foo(void) { __asm__ volatile ("" ::); }
3463 EOF
3464
3465 _restrict=
3466 for restrict_keyword in restrict __restrict__ __restrict; do
3467     check_cc <<EOF && _restrict=$restrict_keyword && break
3468 void foo(char * $restrict_keyword p);
3469 EOF
3470 done
3471
3472 check_cc <<EOF && enable attribute_packed
3473 struct { int x; } __attribute__((packed)) x;
3474 EOF
3475
3476 check_cc <<EOF && enable attribute_may_alias
3477 union { int x; } __attribute__((may_alias)) x;
3478 EOF
3479
3480 check_cc <<EOF || die "endian test failed"
3481 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3482 EOF
3483 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3484
3485 if enabled alpha; then
3486
3487     check_cflags -mieee
3488
3489 elif enabled arm; then
3490
3491     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3492 float func(float a, float b){ return a+b; }
3493 EOF
3494
3495     enabled thumb && check_cflags -mthumb || check_cflags -marm
3496     nogas=die
3497
3498     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3499         enable vfp_args
3500     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3501         case "${cross_prefix:-$cc}" in
3502             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3503             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3504 __asm__ (".eabi_attribute 28, 1");
3505 int main(void) { return 0; }
3506 EOF
3507         esac
3508         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3509     fi
3510
3511     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3512     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3513     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3514     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3515     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3516     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3517
3518     [ $target_os = linux ] ||
3519         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3520             $ARCH_EXT_LIST_ARM
3521
3522     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3523     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3524
3525     enabled_all armv6t2 shared !pic && enable_pic
3526
3527 elif enabled mips; then
3528
3529     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3530     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3531      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3532     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3533      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3534     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3535      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3536     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3537      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3538
3539 elif enabled parisc; then
3540
3541     if enabled gcc; then
3542         case $($cc -dumpversion) in
3543             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3544         esac
3545     fi
3546
3547 elif enabled ppc; then
3548
3549     enable local_aligned_8 local_aligned_16
3550
3551     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3552     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3553     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3554     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3555
3556     # AltiVec flags: The FSF version of GCC differs from the Apple version
3557     if enabled altivec; then
3558         nogas=warn
3559         check_cflags -maltivec -mabi=altivec &&
3560         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3561         check_cflags -faltivec
3562
3563         # check if our compiler supports Motorola AltiVec C API
3564         check_cc <<EOF || disable altivec
3565 $inc_altivec_h
3566 int main(void) {
3567     vector signed int v1 = (vector signed int) { 0 };
3568     vector signed int v2 = (vector signed int) { 1 };
3569     v1 = vec_add(v1, v2);
3570     return 0;
3571 }
3572 EOF
3573
3574         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3575     fi
3576
3577 elif enabled sparc; then
3578
3579     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3580
3581 elif enabled x86; then
3582
3583     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3584
3585     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3586
3587     enable local_aligned_8 local_aligned_16
3588
3589     # check whether EBP is available on x86
3590     # As 'i' is stored on the stack, this program will crash
3591     # if the base pointer is used to access it because the
3592     # base pointer is cleared in the inline assembly code.
3593     check_exec_crash <<EOF && enable ebp_available
3594 volatile int i=0;
3595 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3596 return i;
3597 EOF
3598
3599     # check whether EBX is available on x86
3600     check_inline_asm ebx_available '""::"b"(0)' &&
3601         check_inline_asm ebx_available '"":::"%ebx"'
3602
3603     # check whether xmm clobbers are supported
3604     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3605
3606     # check whether binutils is new enough to compile SSSE3/MMXEXT
3607     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3608     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3609
3610     if ! disabled_any asm mmx yasm; then
3611         if check_cmd $yasmexe --version; then
3612             enabled x86_64 && yasm_extra="-m amd64"
3613             yasm_debug="-g dwarf2"
3614         elif check_cmd nasm -v; then
3615             yasmexe=nasm
3616             yasm_debug="-g -F dwarf"
3617             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3618         fi
3619
3620         YASMFLAGS="-f $objformat $yasm_extra"
3621         enabled pic               && append YASMFLAGS "-DPIC"
3622         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3623         case "$objformat" in
3624             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3625         esac
3626
3627         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3628             die "yasm not found, use --disable-yasm for a crippled build"
3629         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3630         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3631         check_yasm "CPU amdnop" && enable cpunop
3632     fi
3633
3634     case "$cpu" in
3635         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3636             disable fast_clz
3637         ;;
3638     esac
3639
3640 fi
3641
3642 if enabled asm; then
3643     as=${gas:=$as}
3644     check_as <<EOF && enable gnu_as || \
3645         $nogas "GNU assembler not found, install gas-preprocessor"
3646 .macro m n
3647 \n: .int 0
3648 .endm
3649 m x
3650 EOF
3651 fi
3652
3653 check_ldflags -Wl,--as-needed
3654
3655 if check_func dlopen; then
3656     ldl=
3657 elif check_func dlopen -ldl; then
3658     ldl=-ldl
3659 fi
3660
3661 if ! disabled network; then
3662     check_type "sys/types.h sys/socket.h" socklen_t
3663     check_type netdb.h "struct addrinfo"
3664     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3665     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3666     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3667     check_type netinet/in.h "struct sockaddr_in6"
3668     check_type poll.h "struct pollfd"
3669     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3670     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3671     check_type netinet/sctp.h "struct sctp_event_subscribe"
3672     check_func getaddrinfo $network_extralibs
3673     check_func getservbyport $network_extralibs
3674     # Prefer arpa/inet.h over winsock2
3675     if check_header arpa/inet.h ; then
3676         check_func closesocket
3677     elif check_header winsock2.h ; then
3678         check_func_headers winsock2.h closesocket -lws2 &&
3679             network_extralibs="-lws2" ||
3680         { check_func_headers winsock2.h closesocket -lws2_32 &&
3681             network_extralibs="-lws2_32"; }
3682         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3683         check_type ws2tcpip.h socklen_t
3684         check_type ws2tcpip.h "struct addrinfo"
3685         check_type ws2tcpip.h "struct group_source_req"
3686         check_type ws2tcpip.h "struct ip_mreq_source"
3687         check_type ws2tcpip.h "struct ipv6_mreq"
3688         check_type winsock2.h "struct pollfd"
3689         check_type ws2tcpip.h "struct sockaddr_in6"
3690         check_type ws2tcpip.h "struct sockaddr_storage"
3691         check_struct winsock2.h "struct sockaddr" sa_len
3692     else
3693         disable network
3694     fi
3695 fi
3696
3697 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3698 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3699
3700 check_func  access
3701 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3702 check_func  fcntl
3703 check_func  fork
3704 check_func  gethrtime
3705 check_func  getopt
3706 check_func  getrusage
3707 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3708 check_func  gettimeofday
3709 check_func  inet_aton $network_extralibs
3710 check_func  isatty
3711 check_func  localtime_r
3712 check_func  ${malloc_prefix}memalign            && enable memalign
3713 check_func  mkstemp
3714 check_func  mmap
3715 check_func  mprotect
3716 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3717 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3718 check_func  setrlimit
3719 check_func  strerror_r
3720 check_func  sched_getaffinity
3721 check_func  sysconf
3722 check_func  sysctl
3723 check_func  usleep
3724 check_func_headers conio.h kbhit
3725 check_func_headers windows.h PeekNamedPipe
3726 check_func_headers io.h setmode
3727 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3728 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3729 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3730 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3731 check_func_headers windows.h GetProcessAffinityMask
3732 check_func_headers windows.h GetProcessTimes
3733 check_func_headers windows.h GetSystemTimeAsFileTime
3734 check_func_headers windows.h MapViewOfFile
3735 check_func_headers windows.h SetConsoleTextAttribute
3736 check_func_headers windows.h Sleep
3737 check_func_headers windows.h VirtualAlloc
3738 check_func_headers glob.h glob
3739
3740 check_header direct.h
3741 check_header dlfcn.h
3742 check_header dxva.h
3743 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3744 check_header io.h
3745 check_header libcrystalhd/libcrystalhd_if.h
3746 check_header malloc.h
3747 check_header poll.h
3748 check_header sys/mman.h
3749 check_header sys/param.h
3750 check_header sys/resource.h
3751 check_header sys/select.h
3752 check_header sys/time.h
3753 check_header termios.h
3754 check_header unistd.h
3755 check_header vdpau/vdpau.h
3756 check_header vdpau/vdpau_x11.h
3757 check_header windows.h
3758 check_header X11/extensions/XvMClib.h
3759 check_header asm/types.h
3760
3761 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3762 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3763
3764 # check for VDA header
3765 if ! disabled vda && ! enabled ppc; then
3766     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3767         enable vda
3768         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3769     fi
3770 fi
3771
3772 if ! disabled w32threads && ! enabled pthreads; then
3773     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3774 fi
3775
3776 # check for some common methods of building with pthread support
3777 # do this before the optional library checks as some of them require pthreads
3778 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3779     enable pthreads
3780     if check_func pthread_create; then
3781         :
3782     elif check_func pthread_create -pthread; then
3783         add_cflags -pthread
3784         add_extralibs -pthread
3785     elif check_func pthread_create -pthreads; then
3786         add_cflags -pthreads
3787         add_extralibs -pthreads
3788     elif check_func pthread_create -lpthreadGC2; then
3789         add_extralibs -lpthreadGC2
3790     elif ! check_lib pthread.h pthread_create -lpthread; then
3791         disable pthreads
3792     fi
3793 fi
3794
3795 for thread in $THREADS_LIST; do
3796     if enabled $thread; then
3797         test -n "$thread_type" &&
3798             die "ERROR: Only one thread type must be selected." ||
3799             thread_type="$thread"
3800     fi
3801 done
3802
3803 if enabled pthreads; then
3804   check_func pthread_cancel
3805 fi
3806
3807 check_lib math.h sin -lm && LIBM="-lm"
3808 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3809 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3810
3811 atan2f_args=2
3812 ldexpf_args=2
3813 powf_args=2
3814
3815 for func in $MATH_FUNCS; do
3816     eval check_mathfunc $func \${${func}_args:-1}
3817 done
3818
3819 # these are off by default, so fail if requested and not available
3820 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3821 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3822 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3823 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3824 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3825 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3826 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3827 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3828 enabled libcdio    && require2 libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3829 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3830                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3831                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3832 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3833 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3834 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3835 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"
3836 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3837 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3838 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3839 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3840 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3841 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3842 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3843 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3844 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3845 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3846 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3847 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3848 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3849 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3850 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3851 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3852 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3853 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3854     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3855     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3856 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3857 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3858                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3859                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3860 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3861 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3862 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3863 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3864 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3865 enabled libvpx     && {
3866     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3867                                 die "ERROR: libvpx decoder must be installed and version must be >=0.9.1"; }
3868     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3869                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3870 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3871                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3872                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3873 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3874 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3875 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3876                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3877                         die "ERROR: openal not found"; } &&
3878                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3879                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3880 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3881                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3882                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3883                         die "ERROR: openssl not found"; }
3884
3885 if enabled gnutls; then
3886     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3887     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3888 fi
3889
3890 # libdc1394 check
3891 if enabled libdc1394; then
3892     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3893         enable libdc1394_2; } ||
3894     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3895         enable libdc1394_1; } ||
3896     die "ERROR: No version of libdc1394 found "
3897 fi
3898
3899 SDL_CONFIG="${cross_prefix}sdl-config"
3900 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3901     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3902     enable sdl &&
3903     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3904 else
3905   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3906     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3907     sdl_libs=$("${SDL_CONFIG}" --libs)
3908     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3909     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3910     enable sdl &&
3911     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3912   fi
3913 fi
3914 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3915
3916 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3917 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3918 perl --version > /dev/null 2>&1 && enable perl || disable perl
3919 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3920 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3921
3922 check_header linux/fb.h
3923 check_header linux/videodev.h
3924 check_header linux/videodev2.h
3925 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3926
3927 check_header sys/videoio.h
3928
3929 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3930 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3931 # w32api 3.12 had it defined wrong
3932 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3933
3934 check_type "dshow.h" IBaseFilter
3935
3936 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3937 { check_header dev/bktr/ioctl_meteor.h &&
3938   check_header dev/bktr/ioctl_bt848.h; } ||
3939 { check_header machine/ioctl_meteor.h &&
3940   check_header machine/ioctl_bt848.h; } ||
3941 { check_header dev/video/meteor/ioctl_meteor.h &&
3942   check_header dev/video/bktr/ioctl_bt848.h; } ||
3943 check_header dev/ic/bt8xx.h
3944
3945 check_header sndio.h
3946 if check_struct sys/soundcard.h audio_buf_info bytes; then
3947     enable_safe sys/soundcard.h
3948 else
3949     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3950     #include <sys/soundcard.h>
3951     audio_buf_info abc;
3952 EOF
3953 fi
3954 check_header soundcard.h
3955
3956 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3957
3958 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3959     check_func jack_port_get_latency_range -ljack
3960
3961 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3962
3963
3964 enabled x11grab                                           &&
3965 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3966 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3967 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3968
3969 if ! disabled vaapi; then
3970     check_lib va/va.h vaInitialize -lva && {
3971         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3972         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3973     } || disable vaapi
3974 fi
3975
3976 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3977     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3978         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3979 fi
3980
3981 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3982 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3983 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"
3984
3985 # add some useful compiler flags if supported
3986 check_cflags -Wdeclaration-after-statement
3987 check_cflags -Wall
3988 check_cflags -Wno-parentheses
3989 check_cflags -Wno-switch
3990 check_cflags -Wno-format-zero-length
3991 check_cflags -Wdisabled-optimization
3992 check_cflags -Wpointer-arith
3993 check_cflags -Wredundant-decls
3994 check_cflags -Wno-pointer-sign
3995 check_cflags -Wwrite-strings
3996 check_cflags -Wtype-limits
3997 check_cflags -Wundef
3998 check_cflags -Wmissing-prototypes
3999 check_cflags -Wno-pointer-to-int-cast
4000 check_cflags -Wstrict-prototypes
4001 enabled extra_warnings && check_cflags -Winline
4002
4003 # add some linker flags
4004 check_ldflags -Wl,--warn-common
4005 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4006 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4007
4008 enabled xmm_clobber_test &&
4009     check_ldflags -Wl,--wrap,avcodec_open2              \
4010                   -Wl,--wrap,avcodec_decode_audio4      \
4011                   -Wl,--wrap,avcodec_decode_video2      \
4012                   -Wl,--wrap,avcodec_decode_subtitle2   \
4013                   -Wl,--wrap,avcodec_encode_audio2      \
4014                   -Wl,--wrap,avcodec_encode_video       \
4015                   -Wl,--wrap,avcodec_encode_subtitle    \
4016                   -Wl,--wrap,sws_scale ||
4017     disable xmm_clobber_test
4018
4019 echo "X{};" > $TMPV
4020 if test_ldflags -Wl,--version-script,$TMPV; then
4021     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4022     check_cc <<EOF && enable symver_asm_label
4023 void ff_foo(void) __asm__ ("av_foo@VERSION");
4024 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4025 EOF
4026     check_cc <<EOF && enable symver_gnu_asm
4027 __asm__(".symver ff_foo,av_foo@VERSION");
4028 void ff_foo(void) {}
4029 EOF
4030 fi
4031
4032 if [ -z "$optflags" ]; then
4033     if enabled small; then
4034         optflags=$cflags_size
4035     elif enabled optimizations; then
4036         optflags=$cflags_speed
4037     else
4038         optflags=$cflags_noopt
4039     fi
4040 fi
4041
4042 check_optflags(){
4043     check_cflags "$@"
4044     enabled lto && check_ldflags "$@"
4045 }
4046
4047
4048 if enabled lto; then
4049     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4050     check_cflags  -flto
4051     check_ldflags -flto $cpuflags
4052 fi
4053
4054 check_optflags $optflags
4055 check_optflags -fno-math-errno
4056 check_optflags -fno-signed-zeros
4057
4058 enabled ftrapv && check_cflags -ftrapv
4059
4060 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4061 int x;
4062 EOF
4063
4064
4065 if enabled icc; then
4066     # Just warnings, no remarks
4067     check_cflags -w1
4068     # -wd: Disable following warnings
4069     # 144, 167, 556: -Wno-pointer-sign
4070     # 1292: attribute "foo" ignored
4071     # 1419: external declaration in primary source file
4072     # 10006: ignoring unknown option -fno-signed-zeros
4073     # 10148: ignoring unknown option -Wno-parentheses
4074     # 10156: ignoring option '-W'; no argument required
4075     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4076     # 11030: Warning unknown option --as-needed
4077     # 10156: ignoring option '-export'; no argument required
4078     check_ldflags -wd10156,11030
4079     # Allow to compile with optimizations
4080     check_ldflags -march=$cpu
4081     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4082     enable ebp_available
4083     if enabled x86_32; then
4084         icc_version=$($cc -dumpversion)
4085         test ${icc_version%%.*} -ge 11 &&
4086             check_cflags -falign-stack=maintain-16-byte ||
4087             disable aligned_stack
4088     fi
4089 elif enabled ccc; then
4090     # disable some annoying warnings
4091     add_cflags -msg_disable bitnotint
4092     add_cflags -msg_disable mixfuncvoid
4093     add_cflags -msg_disable nonstandcast
4094     add_cflags -msg_disable unsupieee
4095 elif enabled gcc; then
4096     check_optflags -fno-tree-vectorize
4097     check_cflags -Werror=implicit-function-declaration
4098     check_cflags -Werror=missing-prototypes
4099     check_cflags -Werror=vla
4100 elif enabled llvm_gcc; then
4101     check_cflags -mllvm -stack-alignment=16
4102 elif enabled clang; then
4103     check_cflags -mllvm -stack-alignment=16
4104     check_cflags -Qunused-arguments
4105     check_cflags -Werror=implicit-function-declaration
4106     check_cflags -Werror=missing-prototypes
4107 elif enabled armcc; then
4108     # 2523: use of inline assembler is deprecated
4109     add_cflags -W${armcc_opt},--diag_suppress=2523
4110     add_cflags -W${armcc_opt},--diag_suppress=1207
4111     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4112     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4113     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4114     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4115 elif enabled tms470; then
4116     add_cflags -pds=824 -pds=837
4117 elif enabled pathscale; then
4118     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4119 elif enabled msvc; then
4120     enabled x86_32 && disable aligned_stack
4121 fi
4122
4123 case $target_os in
4124     osf1)
4125         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4126     ;;
4127     plan9)
4128         add_cppflags -Dmain=plan9_main
4129     ;;
4130 esac
4131
4132 enabled_any $THREADS_LIST      && enable threads
4133
4134 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4135
4136 check_deps $CONFIG_LIST       \
4137            $CONFIG_EXTRA      \
4138            $HAVE_LIST         \
4139            $ALL_COMPONENTS    \
4140
4141
4142 if test $target_os = "haiku"; then
4143     disable memalign
4144     disable posix_memalign
4145 fi
4146
4147 ! enabled_any memalign posix_memalign aligned_malloc &&
4148     enabled_any $need_memalign && enable memalign_hack
4149
4150 # add_dep lib dep
4151 # -> enable ${lib}_deps_${dep}
4152 # -> add $dep to ${lib}_deps only once
4153 add_dep() {
4154     lib=$1
4155     dep=$2
4156     enabled "${lib}_deps_${dep}" && return 0
4157     enable  "${lib}_deps_${dep}"
4158     prepend "${lib}_deps" $dep
4159 }
4160
4161 # merge deps lib components
4162 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4163 merge_deps() {
4164     lib=$1
4165     shift
4166     for comp in $*; do
4167         enabled $comp || continue
4168         eval "dep=\"\$${comp}_deps\""
4169         for d in $dep; do
4170             add_dep $lib $d
4171         done
4172     done
4173 }
4174
4175 merge_deps libavfilter $FILTER_LIST
4176
4177 echo "install prefix            $prefix"
4178 echo "source path               $source_path"
4179 echo "C compiler                $cc"
4180 echo "ARCH                      $arch ($cpu)"
4181 if test "$build_suffix" != ""; then
4182     echo "build suffix              $build_suffix"
4183 fi
4184 if test "$progs_suffix" != ""; then
4185     echo "progs suffix              $progs_suffix"
4186 fi
4187 if test "$extra_version" != ""; then
4188     echo "version string suffix     $extra_version"
4189 fi
4190 echo "big-endian                ${bigendian-no}"
4191 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4192 if enabled x86; then
4193     echo "${yasmexe}                      ${yasm-no}"
4194     echo "MMX enabled               ${mmx-no}"
4195     echo "MMXEXT enabled            ${mmxext-no}"
4196     echo "3DNow! enabled            ${amd3dnow-no}"
4197     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4198     echo "SSE enabled               ${sse-no}"
4199     echo "SSSE3 enabled             ${ssse3-no}"
4200     echo "AVX enabled               ${avx-no}"
4201     echo "FMA4 enabled              ${fma4-no}"
4202     echo "CMOV enabled              ${cmov-no}"
4203     echo "CMOV is fast              ${fast_cmov-no}"
4204     echo "EBX available             ${ebx_available-no}"
4205     echo "EBP available             ${ebp_available-no}"
4206 fi
4207 if enabled arm; then
4208     echo "ARMv5TE enabled           ${armv5te-no}"
4209     echo "ARMv6 enabled             ${armv6-no}"
4210     echo "ARMv6T2 enabled           ${armv6t2-no}"
4211     echo "VFP enabled               ${vfp-no}"
4212     echo "NEON enabled              ${neon-no}"
4213     echo "THUMB enabled             ${thumb-no}"
4214 fi
4215 if enabled mips; then
4216     echo "MIPS FPU enabled          ${mipsfpu-no}"
4217     echo "MIPS32R2 enabled          ${mips32r2-no}"
4218     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4219     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4220 fi
4221 if enabled ppc; then
4222     echo "AltiVec enabled           ${altivec-no}"
4223     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4224     echo "dcbzl available           ${dcbzl-no}"
4225 fi
4226 if enabled sparc; then
4227     echo "VIS enabled               ${vis-no}"
4228 fi
4229 echo "debug symbols             ${debug-no}"
4230 echo "strip symbols             ${stripping-no}"
4231 echo "optimize for size         ${small-no}"
4232 echo "optimizations             ${optimizations-no}"
4233 echo "static                    ${static-no}"
4234 echo "shared                    ${shared-no}"
4235 echo "postprocessing support    ${postproc-no}"
4236 echo "new filter support        ${avfilter-no}"
4237 echo "network support           ${network-no}"
4238 echo "threading support         ${thread_type-no}"
4239 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4240 echo "SDL support               ${sdl-no}"
4241 echo "libdxva2 enabled          ${dxva2-no}"
4242 echo "libva enabled             ${vaapi-no}"
4243 echo "libvdpau enabled          ${vdpau-no}"
4244 echo "AVISynth enabled          ${avisynth-no}"
4245 echo "frei0r enabled            ${frei0r-no}"
4246 echo "gnutls enabled            ${gnutls-no}"
4247 echo "libaacplus enabled        ${libaacplus-no}"
4248 echo "libass enabled            ${libass-no}"
4249 echo "libcaca enabled           ${libcaca-no}"
4250 echo "libcdio support           ${libcdio-no}"
4251 echo "libcelt enabled           ${libcelt-no}"
4252 echo "libdc1394 support         ${libdc1394-no}"
4253 echo "libfaac enabled           ${libfaac-no}"
4254 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4255 echo "libgsm enabled            ${libgsm-no}"
4256 echo "libiec61883 support       ${libiec61883-no}"
4257 echo "libilbc enabled           ${libilbc-no}"
4258 echo "libmodplug enabled        ${libmodplug-no}"
4259 echo "libmp3lame enabled        ${libmp3lame-no}"
4260 echo "libnut enabled            ${libnut-no}"
4261 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4262 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4263 echo "libopencv support         ${libopencv-no}"
4264 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4265 echo "libopus enabled           ${libopus-no}"
4266 echo "libpulse enabled          ${libpulse-no}"
4267 echo "librtmp enabled           ${librtmp-no}"
4268 echo "libschroedinger enabled   ${libschroedinger-no}"
4269 echo "libsoxr enabled           ${libsoxr-no}"
4270 echo "libspeex enabled          ${libspeex-no}"
4271 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4272 echo "libtheora enabled         ${libtheora-no}"
4273 echo "libtwolame enabled        ${libtwolame-no}"
4274 echo "libutvideo enabled        ${libutvideo-no}"
4275 echo "libv4l2 enabled           ${libv4l2-no}"
4276 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4277 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4278 echo "libvorbis enabled         ${libvorbis-no}"
4279 echo "libvpx enabled            ${libvpx-no}"
4280 echo "libx264 enabled           ${libx264-no}"
4281 echo "libxavs enabled           ${libxavs-no}"
4282 echo "libxvid enabled           ${libxvid-no}"
4283 echo "openal enabled            ${openal-no}"
4284 echo "openssl enabled           ${openssl-no}"
4285 echo "zlib enabled              ${zlib-no}"
4286 echo "bzlib enabled             ${bzlib-no}"
4287 echo "texi2html enabled         ${texi2html-no}"
4288 echo "perl enabled              ${perl-no}"
4289 echo "pod2man enabled           ${pod2man-no}"
4290 echo "makeinfo enabled          ${makeinfo-no}"
4291 test -n "$random_seed" &&
4292     echo "random seed               ${random_seed}"
4293 echo
4294
4295 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4296     echo "Enabled ${type}s:"
4297     eval list=\$$(toupper $type)_LIST
4298     print_enabled '_*' $list | sort | pr -r -3 -t
4299     echo
4300 done
4301
4302 license="LGPL version 2.1 or later"
4303 if enabled nonfree; then
4304     license="nonfree and unredistributable"
4305 elif enabled gplv3; then
4306     license="GPL version 3 or later"
4307 elif enabled lgplv3; then
4308     license="LGPL version 3 or later"
4309 elif enabled gpl; then
4310     license="GPL version 2 or later"
4311 fi
4312
4313 echo "License: $license"
4314
4315 echo "Creating config.mak and config.h..."
4316
4317 test -e Makefile || $ln_s "$source_path/Makefile" .
4318
4319 enabled stripping || strip="echo skipping strip"
4320
4321 config_files="$TMPH config.mak"
4322
4323 cat > config.mak <<EOF
4324 # Automatically generated by configure - do not modify!
4325 ifndef FFMPEG_CONFIG_MAK
4326 FFMPEG_CONFIG_MAK=1
4327 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4328 prefix=$prefix
4329 LIBDIR=\$(DESTDIR)$libdir
4330 SHLIBDIR=\$(DESTDIR)$shlibdir
4331 INCDIR=\$(DESTDIR)$incdir
4332 BINDIR=\$(DESTDIR)$bindir
4333 DATADIR=\$(DESTDIR)$datadir
4334 MANDIR=\$(DESTDIR)$mandir
4335 SRC_PATH=$source_path
4336 ifndef MAIN_MAKEFILE
4337 SRC_PATH:=\$(SRC_PATH:.%=..%)
4338 endif
4339 CC_IDENT=$cc_ident
4340 ARCH=$arch
4341 CC=$cc
4342 CXX=$cxx
4343 AS=$as
4344 LD=$ld
4345 DEPCC=$dep_cc
4346 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4347 DEPAS=$as
4348 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4349 YASM=$yasmexe
4350 DEPYASM=$yasmexe
4351 AR=$ar
4352 ARFLAGS=$arflags
4353 AR_O=$ar_o
4354 RANLIB=$ranlib
4355 CP=cp -p
4356 LN_S=$ln_s
4357 STRIP=$strip
4358 CPPFLAGS=$CPPFLAGS
4359 CFLAGS=$CFLAGS
4360 CXXFLAGS=$CXXFLAGS
4361 ASFLAGS=$ASFLAGS
4362 AS_C=$AS_C
4363 AS_O=$AS_O
4364 CC_C=$CC_C
4365 CC_E=$CC_E
4366 CC_O=$CC_O
4367 CXX_C=$CXX_C
4368 CXX_O=$CXX_O
4369 LD_O=$LD_O
4370 LD_LIB=$LD_LIB
4371 LD_PATH=$LD_PATH
4372 DLLTOOL=$dlltool
4373 LDFLAGS=$LDFLAGS
4374 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4375 SHFLAGS=$SHFLAGS
4376 YASMFLAGS=$YASMFLAGS
4377 BUILDSUF=$build_suffix
4378 PROGSSUF=$progs_suffix
4379 FULLNAME=$FULLNAME
4380 LIBPREF=$LIBPREF
4381 LIBSUF=$LIBSUF
4382 LIBNAME=$LIBNAME
4383 SLIBPREF=$SLIBPREF
4384 SLIBSUF=$SLIBSUF
4385 EXESUF=$EXESUF
4386 EXTRA_VERSION=$extra_version
4387 CCDEP=$CCDEP
4388 CXXDEP=$CXXDEP
4389 CCDEP_FLAGS=$CCDEP_FLAGS
4390 ASDEP=$ASDEP
4391 ASDEP_FLAGS=$ASDEP_FLAGS
4392 CC_DEPFLAGS=$CC_DEPFLAGS
4393 AS_DEPFLAGS=$AS_DEPFLAGS
4394 HOSTCC=$host_cc
4395 HOSTLD=$host_ld
4396 HOSTCFLAGS=$host_cflags
4397 HOSTEXESUF=$HOSTEXESUF
4398 HOSTLDFLAGS=$host_ldflags
4399 HOSTLIBS=$host_libs
4400 DEPHOSTCC=$host_cc
4401 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4402 HOSTCCDEP=$HOSTCCDEP
4403 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4404 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4405 HOSTCC_C=$HOSTCC_C
4406 HOSTCC_O=$HOSTCC_O
4407 HOSTLD_O=$HOSTLD_O
4408 TARGET_EXEC=$target_exec
4409 TARGET_PATH=$target_path
4410 LIBS-ffplay=$sdl_libs
4411 CFLAGS-ffplay=$sdl_cflags
4412 ZLIB=$($ldflags_filter -lz)
4413 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4414 EXTRALIBS=$extralibs
4415 COMPAT_OBJS=$compat_objs
4416 EXEOBJS=$exeobjs
4417 INSTALL=$install
4418 LIBTARGET=${LIBTARGET}
4419 SLIBNAME=${SLIBNAME}
4420 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4421 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4422 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4423 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4424 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4425 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4426 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4427 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4428 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4429 NOREDZONE_FLAGS=$noredzone_flags
4430 EOF
4431
4432 get_version(){
4433     lcname=lib${1}
4434     name=$(toupper $lcname)
4435     file=$source_path/$lcname/version.h
4436     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4437     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4438     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4439     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4440 }
4441
4442 get_version_old(){
4443     name=$1
4444     file=$source_path/$2
4445 # This condition will be removed when we stop supporting old libpostproc versions
4446 if ! test "$name" = LIBPOSTPROC || test "$postproc_version" = current; then
4447     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
4448     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4449 fi
4450     lcname=$(tolower $name)
4451     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4452     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4453 }
4454
4455 get_version_old LIBPOSTPROC libpostproc/version.h
4456
4457 map 'get_version $v' $LIBRARY_LIST
4458
4459 cat > $TMPH <<EOF
4460 /* Automatically generated by configure - do not modify! */
4461 #ifndef FFMPEG_CONFIG_H
4462 #define FFMPEG_CONFIG_H
4463 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4464 #define FFMPEG_LICENSE "$(c_escape $license)"
4465 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4466 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4467 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4468 #define av_restrict $_restrict
4469 #define EXTERN_PREFIX "${extern_prefix}"
4470 #define EXTERN_ASM ${extern_prefix}
4471 #define SLIBSUF "$SLIBSUF"
4472 #define HAVE_MMX2 HAVE_MMXEXT
4473 EOF
4474
4475 test -n "$assert_level" &&
4476     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4477
4478 test -n "$malloc_prefix" &&
4479     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4480
4481 if enabled yasm; then
4482     append config_files $TMPASM
4483     printf '' >$TMPASM
4484 fi
4485
4486 print_config ARCH_   "$config_files" $ARCH_LIST
4487 print_config HAVE_   "$config_files" $HAVE_LIST
4488 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4489                                      $CONFIG_EXTRA      \
4490                                      $ALL_COMPONENTS    \
4491
4492 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4493 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4494
4495 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4496 cp_if_changed $TMPH config.h
4497 touch .config
4498
4499 enabled yasm && cp_if_changed $TMPASM config.asm
4500
4501 cat > $TMPH <<EOF
4502 /* Generated by ffconf */
4503 #ifndef AVUTIL_AVCONFIG_H
4504 #define AVUTIL_AVCONFIG_H
4505 EOF
4506
4507 test "$postproc_version" != current && cat >> $TMPH <<EOF
4508 #define LIBPOSTPROC_VERSION_MAJOR $LIBPOSTPROC_VERSION_MAJOR
4509 #define LIBPOSTPROC_VERSION_MINOR $LIBPOSTPROC_VERSION_MINOR
4510 #define LIBPOSTPROC_VERSION_MICRO $LIBPOSTPROC_VERSION_MICRO
4511 EOF
4512
4513 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4514
4515 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4516
4517 cp_if_changed $TMPH libavutil/avconfig.h
4518
4519 if test -n "$WARNINGS"; then
4520     printf "\n$WARNINGS"
4521     enabled fatal_warnings && exit 1
4522 fi
4523
4524 # build pkg-config files
4525
4526 pkgconfig_generate(){
4527     name=$1
4528     shortname=${name#lib}${build_suffix}
4529     comment=$2
4530     version=$3
4531     libs=$4
4532     requires=$5
4533     enabled ${name#lib} || return 0
4534     mkdir -p $name
4535     cat <<EOF > $name/$name.pc
4536 prefix=$prefix
4537 exec_prefix=\${prefix}
4538 libdir=$libdir
4539 includedir=$incdir
4540
4541 Name: $name
4542 Description: $comment
4543 Version: $version
4544 Requires: $(enabled shared || echo $requires)
4545 Requires.private: $(enabled shared && echo $requires)
4546 Conflicts:
4547 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4548 Libs.private: $(enabled shared && echo $libs)
4549 Cflags: -I\${includedir}
4550 EOF
4551
4552 mkdir -p doc/examples/pc-uninstalled
4553 includedir=${source_path}
4554 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4555     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4556 prefix=
4557 exec_prefix=
4558 libdir=\${pcfiledir}/../../../$name
4559 includedir=${includedir}
4560
4561 Name: $name
4562 Description: $comment
4563 Version: $version
4564 Requires: $requires
4565 Conflicts:
4566 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4567 Cflags: -I\${includedir}
4568 EOF
4569 }
4570
4571 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4572 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4573 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4574 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4575 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4576 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4577 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4578 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4579
4580 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4581 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4582
4583 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4584 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4585 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4586 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4587 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4588 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4589 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4590 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4591 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4592
4593 fix_ffmpeg_remote(){
4594     git_remote_from=$1
4595     git_remote_to=$2
4596     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4597     if [ "$fixme_remote" != "" ]; then
4598         echolog "
4599 Outdated domain in git config, the official domain for ffmpeg git is since
4600 November 2011, source.ffmpeg.org, both the old and the new point to the same
4601 repository and server. To update it enter the following commands:
4602 "
4603         for remote in $fixme_remote; do
4604             echolog "git remote set-url $remote $git_remote_to"
4605         done
4606     fi
4607 }
4608
4609 if test -f "$source_path/.git/config"; then
4610     remote_from=git.videolan.org
4611     remote_to=source.ffmpeg.org
4612     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4613     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4614 fi