avfilter: port pullup filter from libmpcodecs
[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   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
108
109 Program options:
110   --disable-programs       do not build command line programs
111   --disable-ffmpeg         disable ffmpeg build
112   --disable-ffplay         disable ffplay build
113   --disable-ffprobe        disable ffprobe build
114   --disable-ffserver       disable ffserver build
115
116 Documentation options:
117   --disable-doc            do not build documentation
118   --disable-htmlpages      do not build HTML documentation pages
119   --disable-manpages       do not build man documentation pages
120   --disable-podpages       do not build POD documentation pages
121   --disable-txtpages       do not build text documentation pages
122
123 Component options:
124   --disable-avdevice       disable libavdevice build
125   --disable-avcodec        disable libavcodec build
126   --disable-avformat       disable libavformat build
127   --disable-avutil         disable libavutil build
128   --disable-swresample     disable libswresample build
129   --disable-swscale        disable libswscale build
130   --disable-postproc       disable libpostproc build
131   --disable-avfilter       disable libavfilter build
132   --enable-avresample      enable libavresample build [no]
133   --disable-pthreads       disable pthreads [auto]
134   --disable-w32threads     disable Win32 threads [auto]
135   --disable-os2threads     disable OS/2 threads [auto]
136   --disable-network        disable network support [no]
137   --disable-dct            disable DCT code
138   --disable-dwt            disable DWT code
139   --disable-error-resilience disable error resilience code
140   --disable-lsp            disable LSP code
141   --disable-lzo            disable LZO decoder code
142   --disable-mdct           disable MDCT code
143   --disable-rdft           disable RDFT code
144   --disable-fft            disable FFT code
145
146 Hardware accelerators:
147   --disable-dxva2          disable DXVA2 code [autodetect]
148   --disable-vaapi          disable VAAPI code [autodetect]
149   --enable-vda             enable VDA code
150   --disable-vdpau          disable VDPAU code [autodetect]
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190   --enable-avisynth        enable reading of AviSynth script files [no]
191   --disable-bzlib          disable bzlib [autodetect]
192   --enable-fontconfig      enable fontconfig
193   --enable-frei0r          enable frei0r video filtering
194   --enable-gnutls          enable gnutls [no]
195   --disable-iconv          disable iconv [autodetect]
196   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
197   --enable-libass          enable libass subtitles rendering [no]
198   --enable-libbluray       enable BluRay reading using libbluray [no]
199   --enable-libcaca         enable textual display using libcaca
200   --enable-libcelt         enable CELT decoding via libcelt [no]
201   --enable-libcdio         enable audio CD grabbing with libcdio
202   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
203                            and libraw1394 [no]
204   --enable-libfaac         enable AAC encoding via libfaac [no]
205   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
206   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
207   --enable-libfreetype     enable libfreetype [no]
208   --enable-libgme          enable Game Music Emu via libgme [no]
209   --enable-libgsm          enable GSM de/encoding via libgsm [no]
210   --enable-libiec61883     enable iec61883 via libiec61883 [no]
211   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
212   --enable-libmodplug      enable ModPlug via libmodplug [no]
213   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
214   --enable-libnut          enable NUT (de)muxing via libnut,
215                            native (de)muxer exists [no]
216   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
217   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
218   --enable-libopencv       enable video filtering via libopencv [no]
219   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
220   --enable-libopus         enable Opus decoding via libopus [no]
221   --enable-libpulse        enable Pulseaudio input via libpulse [no]
222   --enable-libquvi         enable quvi input via libquvi [no]
223   --enable-librtmp         enable RTMP[E] support via librtmp [no]
224   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
225   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
226   --enable-libsoxr         enable Include libsoxr resampling [no]
227   --enable-libspeex        enable Speex de/encoding via libspeex [no]
228   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
229   --enable-libtheora       enable Theora encoding via libtheora [no]
230   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
231   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
232   --enable-libv4l2         enable libv4l2/v4l-utils [no]
233   --enable-libvidstab      enable video stabilization using vid.stab [no]
234   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
235   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
236   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
237                            native implementation exists [no]
238   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
239   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
240   --enable-libx264         enable H.264 encoding via x264 [no]
241   --enable-libxavs         enable AVS encoding via xavs [no]
242   --enable-libxvid         enable Xvid encoding via xvidcore,
243                            native MPEG-4/Xvid encoder exists [no]
244   --enable-libzmq          enable message passing via libzmq [no]
245   --enable-libzvbi         enable teletext support via libzvbi [no]
246   --enable-openal          enable OpenAL 1.1 capture support [no]
247   --enable-opencl          enable OpenCL code
248   --enable-openssl         enable openssl [no]
249   --enable-x11grab         enable X11 grabbing [no]
250   --disable-zlib           disable zlib [autodetect]
251
252 Advanced options (experts only):
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool NM [$nm_default]
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --cxx=CXX                use C compiler CXX [$cxx_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD [$ld_default]
270   --host-cc=HOSTCC         use host C compiler HOSTCC
271   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
272   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
273   --host-ld=HOSTLD         use host linker HOSTLD
274   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
275   --host-libs=HLIBS        use libs HLIBS when linking for host
276   --host-os=OS             compiler host OS [$target_os]
277   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
278   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
279   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
280   --extra-libs=ELIBS       add ELIBS [$ELIBS]
281   --extra-version=STRING   version string suffix []
282   --optflags=OPTFLAGS      override optimization-related compiler flags
283   --build-suffix=SUFFIX    library name suffix []
284   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
285   --progs-suffix=SUFFIX    program name suffix []
286   --arch=ARCH              select architecture [$arch]
287   --cpu=CPU                select the minimum required CPU (affects
288                            instruction selection, may crash on older CPUs)
289   --enable-pic             build position-independent code
290   --enable-sram            allow use of on-chip SRAM
291   --enable-thumb           compile for Thumb instruction set
292   --disable-symver         disable symbol versioning
293   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
294   --disable-safe-bitstream-reader
295                            disable buffer boundary checking in bitreaders
296                            (faster, but may crash)
297   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
298   --enable-lto             use link-time optimization
299
300 Optimization options (experts only):
301   --disable-asm            disable all assembler optimizations
302   --disable-altivec        disable AltiVec optimizations
303   --disable-amd3dnow       disable 3DNow! optimizations
304   --disable-amd3dnowext    disable 3DNow! extended optimizations
305   --disable-mmx            disable MMX optimizations
306   --disable-mmxext         disable MMXEXT optimizations
307   --disable-sse            disable SSE optimizations
308   --disable-sse2           disable SSE2 optimizations
309   --disable-sse3           disable SSE3 optimizations
310   --disable-ssse3          disable SSSE3 optimizations
311   --disable-sse4           disable SSE4 optimizations
312   --disable-sse42          disable SSE4.2 optimizations
313   --disable-avx            disable AVX optimizations
314   --disable-fma4           disable FMA4 optimizations
315   --disable-armv5te        disable armv5te optimizations
316   --disable-armv6          disable armv6 optimizations
317   --disable-armv6t2        disable armv6t2 optimizations
318   --disable-vfp            disable VFP optimizations
319   --disable-neon           disable NEON optimizations
320   --disable-vis            disable VIS optimizations
321   --disable-inline-asm     disable use of inline assembler
322   --disable-yasm           disable use of yasm assembler
323   --disable-mips32r2       disable MIPS32R2 optimizations
324   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
325   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
326   --disable-mipsfpu        disable floating point MIPS optimizations
327   --disable-fast-unaligned consider unaligned accesses slow
328
329 Developer options (useful when working on FFmpeg itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --disable-stripping      disable stripping of executables and shared libraries
335   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
336                            2 causes a slowdown at runtime.
337   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
338   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
339                            leaks and errors, using the specified valgrind binary.
340                            Cannot be combined with --target-exec
341   --enable-ftrapv          Trap arithmetic overflows
342   --samples=PATH           location of test samples for FATE, if not set use
343                            \$FATE_SAMPLES at make invocation time.
344   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
345                            should be used only for debugging purposes)
346   --enable-random          randomly enable/disable components
347   --disable-random
348   --enable-random=LIST     randomly enable/disable specific components or
349   --disable-random=LIST    component groups. LIST is a comma-separated list
350                            of NAME[:PROB] entries where NAME is a component
351                            (group) and PROB the probability associated with
352                            NAME (default 0.5).
353   --random-seed=VALUE      seed value for --enable/disable-random
354
355 NOTE: Object files are built at the place where configure is launched.
356 EOF
357   exit 0
358 }
359
360 quotes='""'
361
362 log(){
363     echo "$@" >> $logfile
364 }
365
366 log_file(){
367     log BEGIN $1
368     pr -n -t $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) echo $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) echo $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 } else if (file ~ /\\.texi\$/) {
677                     pre = -v ? \"\" : \"@c \";
678                     yesno = \$2;
679                     c2 = tolower(c);
680                     gsub(/_/, \"-\", c2);
681                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
682                 }
683             }
684         }"
685 }
686
687 print_enabled(){
688     suf=$1
689     shift
690     for v; do
691         enabled $v && printf "%s\n" ${v%$suf};
692     done
693 }
694
695 append(){
696     var=$1
697     shift
698     eval "$var=\"\$$var $*\""
699 }
700
701 prepend(){
702     var=$1
703     shift
704     eval "$var=\"$* \$$var\""
705 }
706
707 add_cppflags(){
708     append CPPFLAGS "$@"
709 }
710
711 add_cflags(){
712     append CFLAGS $($cflags_filter "$@")
713 }
714
715 add_cxxflags(){
716     append CXXFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_ldflags(){
724     append LDFLAGS $($ldflags_filter "$@")
725 }
726
727 add_extralibs(){
728     prepend extralibs $($ldflags_filter "$@")
729 }
730
731 add_host_cppflags(){
732     append host_cppflags "$@"
733 }
734
735 add_host_cflags(){
736     append host_cflags $($host_cflags_filter "$@")
737 }
738
739 add_host_ldflags(){
740     append host_ldflags $($host_ldflags_filter "$@")
741 }
742
743 add_compat(){
744     append compat_objs $1
745     shift
746     map 'add_cppflags -D$v' "$@"
747 }
748
749 check_cmd(){
750     log "$@"
751     "$@" >> $logfile 2>&1
752 }
753
754 cc_o(){
755     eval printf '%s\\n' $CC_O
756 }
757
758 cc_e(){
759     eval printf '%s\\n' $CC_E
760 }
761
762 check_cc(){
763     log check_cc "$@"
764     cat > $TMPC
765     log_file $TMPC
766     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
767 }
768
769 check_cxx(){
770     log check_cxx "$@"
771     cat > $TMPCPP
772     log_file $TMPCPP
773     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
774 }
775
776 check_cpp(){
777     log check_cpp "$@"
778     cat > $TMPC
779     log_file $TMPC
780     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
781 }
782
783 as_o(){
784     eval printf '%s\\n' $AS_O
785 }
786
787 check_as(){
788     log check_as "$@"
789     cat > $TMPS
790     log_file $TMPS
791     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
792 }
793
794 check_inline_asm(){
795     log check_inline_asm "$@"
796     name="$1"
797     code="$2"
798     shift 2
799     disable $name
800     check_cc "$@" <<EOF && enable $name
801 void foo(void){ __asm__ volatile($code); }
802 EOF
803 }
804
805 check_insn(){
806     log check_insn "$@"
807     check_inline_asm ${1}_inline "\"$2\""
808     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
809 }
810
811 check_yasm(){
812     log check_yasm "$@"
813     echo "$1" > $TMPS
814     log_file $TMPS
815     shift 1
816     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
817 }
818
819 ld_o(){
820     eval printf '%s\\n' $LD_O
821 }
822
823 check_ld(){
824     log check_ld "$@"
825     type=$1
826     shift 1
827     flags=$(filter_out '-l*|*.so' $@)
828     libs=$(filter '-l*|*.so' $@)
829     check_$type $($cflags_filter $flags) || return
830     flags=$($ldflags_filter $flags)
831     libs=$($ldflags_filter $libs)
832     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
833 }
834
835 check_code(){
836     log check_code "$@"
837     check=$1
838     headers=$2
839     code=$3
840     shift 3
841     {
842         for hdr in $headers; do
843             echo "#include <$hdr>"
844         done
845         echo "int main(void) { $code; return 0; }"
846     } | check_$check "$@"
847 }
848
849 check_cppflags(){
850     log check_cppflags "$@"
851     check_cc "$@" <<EOF && append CPPFLAGS "$@"
852 int x;
853 EOF
854 }
855
856 check_cflags(){
857     log check_cflags "$@"
858     set -- $($cflags_filter "$@")
859     check_cc "$@" <<EOF && append CFLAGS "$@"
860 int x;
861 EOF
862 }
863
864 check_cxxflags(){
865     log check_cxxflags "$@"
866     set -- $($cflags_filter "$@")
867     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_ldflags(){
873     log test_ldflags "$@"
874     check_ld "cc" "$@" <<EOF
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_ldflags(){
880     log check_ldflags "$@"
881     test_ldflags "$@" && add_ldflags "$@"
882 }
883
884 check_header(){
885     log check_header "$@"
886     header=$1
887     shift
888     disable_safe $header
889     check_cpp "$@" <<EOF && enable_safe $header
890 #include <$header>
891 int x;
892 EOF
893 }
894
895 check_func(){
896     log check_func "$@"
897     func=$1
898     shift
899     disable $func
900     check_ld "cc" "$@" <<EOF && enable $func
901 extern int $func();
902 int main(void){ $func(); }
903 EOF
904 }
905
906 check_mathfunc(){
907     log check_mathfunc "$@"
908     func=$1
909     narg=$2
910     shift 2
911     test $narg = 2 && args="f, g" || args="f"
912     disable $func
913     check_ld "cc" "$@" <<EOF && enable $func
914 #include <math.h>
915 float foo(float f, float g) { return $func($args); }
916 int main(void){ return (int) foo; }
917 EOF
918 }
919
920 check_func_headers(){
921     log check_func_headers "$@"
922     headers=$1
923     funcs=$2
924     shift 2
925     {
926         for hdr in $headers; do
927             echo "#include <$hdr>"
928         done
929         for func in $funcs; do
930             echo "long check_$func(void) { return (long) $func; }"
931         done
932         echo "int main(void) { return 0; }"
933     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
934 }
935
936 check_class_headers_cpp(){
937     log check_class_headers_cpp "$@"
938     headers=$1
939     classes=$2
940     shift 2
941     {
942         for hdr in $headers; do
943             echo "#include <$hdr>"
944         done
945         echo "int main(void) { "
946         i=1
947         for class in $classes; do
948             echo "$class obj$i;"
949             i=$(expr $i + 1)
950         done
951         echo "return 0; }"
952     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
953 }
954
955 check_cpp_condition(){
956     log check_cpp_condition "$@"
957     header=$1
958     condition=$2
959     shift 2
960     check_cpp "$@" <<EOF
961 #include <$header>
962 #if !($condition)
963 #error "unsatisfied condition: $condition"
964 #endif
965 EOF
966 }
967
968 check_lib(){
969     log check_lib "$@"
970     header="$1"
971     func="$2"
972     shift 2
973     check_header $header && check_func $func "$@" && add_extralibs "$@"
974 }
975
976 check_lib2(){
977     log check_lib2 "$@"
978     headers="$1"
979     funcs="$2"
980     shift 2
981     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
982 }
983
984 check_lib_cpp(){
985     log check_lib_cpp "$@"
986     headers="$1"
987     classes="$2"
988     shift 2
989     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
990 }
991
992 check_pkg_config(){
993     log check_pkg_config "$@"
994     pkg="$1"
995     headers="$2"
996     funcs="$3"
997     shift 3
998     check_cmd $pkg_config --exists --print-errors $pkg || return
999     pkg_cflags=$($pkg_config --cflags $pkg)
1000     pkg_libs=$($pkg_config --libs $pkg)
1001     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1002         set_safe ${pkg}_cflags $pkg_cflags   &&
1003         set_safe ${pkg}_libs   $pkg_libs
1004 }
1005
1006 check_exec(){
1007     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1008 }
1009
1010 check_exec_crash(){
1011     code=$(cat)
1012
1013     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1014     # are safe but may not be available everywhere.  Thus we use
1015     # raise(SIGTERM) instead.  The check is run in a subshell so we
1016     # can redirect the "Terminated" message from the shell.  SIGBUS
1017     # is not defined by standard C so it is used conditionally.
1018
1019     (check_exec "$@") >> $logfile 2>&1 <<EOF
1020 #include <signal.h>
1021 static void sighandler(int sig){
1022     raise(SIGTERM);
1023 }
1024 int foo(void){
1025     $code
1026 }
1027 int (*func_ptr)(void) = foo;
1028 int main(void){
1029     signal(SIGILL, sighandler);
1030     signal(SIGFPE, sighandler);
1031     signal(SIGSEGV, sighandler);
1032 #ifdef SIGBUS
1033     signal(SIGBUS, sighandler);
1034 #endif
1035     return func_ptr();
1036 }
1037 EOF
1038 }
1039
1040 check_type(){
1041     log check_type "$@"
1042     headers=$1
1043     type=$2
1044     shift 2
1045     disable_safe "$type"
1046     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1047 }
1048
1049 check_struct(){
1050     log check_struct "$@"
1051     headers=$1
1052     struct=$2
1053     member=$3
1054     shift 3
1055     disable_safe "${struct}_${member}"
1056     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1057         enable_safe "${struct}_${member}"
1058 }
1059
1060 check_builtin(){
1061     log check_builtin "$@"
1062     name=$1
1063     headers=$2
1064     builtin=$3
1065     shift 3
1066     disable "$name"
1067     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1068 }
1069
1070 require(){
1071     name="$1"
1072     header="$2"
1073     func="$3"
1074     shift 3
1075     check_lib $header $func "$@" || die "ERROR: $name not found"
1076 }
1077
1078 require2(){
1079     name="$1"
1080     headers="$2"
1081     func="$3"
1082     shift 3
1083     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1084 }
1085
1086 require_cpp(){
1087     name="$1"
1088     headers="$2"
1089     classes="$3"
1090     shift 3
1091     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1092 }
1093
1094 require_pkg_config(){
1095     pkg="$1"
1096     check_pkg_config "$@" || die "ERROR: $pkg not found"
1097     add_cflags    $(get_safe ${pkg}_cflags)
1098     add_extralibs $(get_safe ${pkg}_libs)
1099 }
1100
1101 hostcc_o(){
1102     eval printf '%s\\n' $HOSTCC_O
1103 }
1104
1105 check_host_cc(){
1106     log check_host_cc "$@"
1107     cat > $TMPC
1108     log_file $TMPC
1109     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1110 }
1111
1112 check_host_cppflags(){
1113     log check_host_cppflags "$@"
1114     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1115 int x;
1116 EOF
1117 }
1118
1119 check_host_cflags(){
1120     log check_host_cflags "$@"
1121     set -- $($host_cflags_filter "$@")
1122     check_host_cc "$@" <<EOF && append host_cflags "$@"
1123 int x;
1124 EOF
1125 }
1126
1127 apply(){
1128     file=$1
1129     shift
1130     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1131 }
1132
1133 cp_if_changed(){
1134     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1135     mkdir -p "$(dirname $2)"
1136     $cp_f "$1" "$2"
1137 }
1138
1139 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1140 # system-dependent things.
1141
1142 COMPONENT_LIST="
1143     bsfs
1144     decoders
1145     demuxers
1146     encoders
1147     filters
1148     hwaccels
1149     indevs
1150     muxers
1151     outdevs
1152     parsers
1153     protocols
1154 "
1155
1156 EXTERNAL_LIBRARY_LIST="
1157     avisynth
1158     bzlib
1159     crystalhd
1160     fontconfig
1161     frei0r
1162     gnutls
1163     iconv
1164     libaacplus
1165     libass
1166     libbluray
1167     libcaca
1168     libcdio
1169     libcelt
1170     libdc1394
1171     libfaac
1172     libfdk_aac
1173     libflite
1174     libfreetype
1175     libgme
1176     libgsm
1177     libiec61883
1178     libilbc
1179     libmodplug
1180     libmp3lame
1181     libnut
1182     libopencore_amrnb
1183     libopencore_amrwb
1184     libopencv
1185     libopenjpeg
1186     libopus
1187     libpulse
1188     libquvi
1189     librtmp
1190     libschroedinger
1191     libshine
1192     libsoxr
1193     libspeex
1194     libstagefright_h264
1195     libtheora
1196     libtwolame
1197     libutvideo
1198     libv4l2
1199     libvidstab
1200     libvo_aacenc
1201     libvo_amrwbenc
1202     libvorbis
1203     libvpx
1204     libwavpack
1205     libx264
1206     libxavs
1207     libxvid
1208     libzmq
1209     libzvbi
1210     openal
1211     opencl
1212     openssl
1213     x11grab
1214     zlib
1215 "
1216
1217 DOCUMENT_LIST="
1218     doc
1219     htmlpages
1220     manpages
1221     podpages
1222     txtpages
1223 "
1224
1225 HWACCEL_LIST="
1226     dxva2
1227     vaapi
1228     vda
1229     vdpau
1230 "
1231
1232 LIBRARY_LIST="
1233     avcodec
1234     avdevice
1235     avfilter
1236     avformat
1237     avresample
1238     avutil
1239     postproc
1240     swresample
1241     swscale
1242 "
1243
1244 PROGRAM_LIST="
1245     ffplay
1246     ffprobe
1247     ffserver
1248     ffmpeg
1249 "
1250
1251 CONFIG_LIST="
1252     $COMPONENT_LIST
1253     $DOCUMENT_LIST
1254     $EXTERNAL_LIBRARY_LIST
1255     $HWACCEL_LIST
1256     $LIBRARY_LIST
1257     $PROGRAM_LIST
1258     dct
1259     dwt
1260     error_resilience
1261     fast_unaligned
1262     fft
1263     ftrapv
1264     gpl
1265     gray
1266     hardcoded_tables
1267     incompatible_libav_abi
1268     incompatible_fork_abi
1269     lsp
1270     lzo
1271     mdct
1272     memalign_hack
1273     memory_poisoning
1274     network
1275     nonfree
1276     pic
1277     rdft
1278     runtime_cpudetect
1279     safe_bitstream_reader
1280     shared
1281     small
1282     sram
1283     static
1284     swscale_alpha
1285     thumb
1286     version3
1287     xmm_clobber_test
1288 "
1289
1290 THREADS_LIST='
1291     pthreads
1292     w32threads
1293     os2threads
1294 '
1295
1296 ATOMICS_LIST='
1297     atomics_gcc
1298     atomics_suncc
1299     atomics_win32
1300 '
1301
1302 ARCH_LIST='
1303     aarch64
1304     alpha
1305     arm
1306     avr32
1307     avr32_ap
1308     avr32_uc
1309     bfin
1310     ia64
1311     m68k
1312     mips
1313     mips64
1314     parisc
1315     ppc
1316     ppc64
1317     s390
1318     sh4
1319     sparc
1320     sparc64
1321     tilegx
1322     tilepro
1323     tomi
1324     x86
1325     x86_32
1326     x86_64
1327 '
1328
1329 ARCH_EXT_LIST_ARM='
1330     armv5te
1331     armv6
1332     armv6t2
1333     neon
1334     vfp
1335     vfpv3
1336 '
1337
1338 ARCH_EXT_LIST_X86='
1339     amd3dnow
1340     amd3dnowext
1341     avx
1342     fma4
1343     i686
1344     mmx
1345     mmxext
1346     sse
1347     sse2
1348     sse3
1349     sse4
1350     sse42
1351     ssse3
1352 '
1353
1354 ARCH_EXT_LIST="
1355     $ARCH_EXT_LIST_ARM
1356     $ARCH_EXT_LIST_X86
1357     altivec
1358     ppc4xx
1359     vis
1360     mipsfpu
1361     mips32r2
1362     mipsdspr1
1363     mipsdspr2
1364 "
1365
1366 HAVE_LIST_CMDLINE='
1367     inline_asm
1368     symver
1369     yasm
1370 '
1371
1372 HAVE_LIST_PUB='
1373     bigendian
1374     fast_unaligned
1375     incompatible_libav_abi
1376     incompatible_fork_abi
1377 '
1378
1379 MATH_FUNCS="
1380     atanf
1381     atan2f
1382     cbrt
1383     cbrtf
1384     cosf
1385     exp2
1386     exp2f
1387     expf
1388     isinf
1389     isnan
1390     ldexpf
1391     llrint
1392     llrintf
1393     log2
1394     log2f
1395     log10f
1396     lrint
1397     lrintf
1398     powf
1399     rint
1400     round
1401     roundf
1402     sinf
1403     trunc
1404     truncf
1405 "
1406
1407 HAVE_LIST="
1408     $ARCH_EXT_LIST
1409     $(add_suffix _external $ARCH_EXT_LIST)
1410     $(add_suffix _inline   $ARCH_EXT_LIST)
1411     $HAVE_LIST_CMDLINE
1412     $HAVE_LIST_PUB
1413     $THREADS_LIST
1414     $ATOMICS_LIST
1415     $MATH_FUNCS
1416     access
1417     aligned_malloc
1418     aligned_stack
1419     alsa_asoundlib_h
1420     altivec_h
1421     arpa_inet_h
1422     asm_mod_q
1423     asm_mod_y
1424     asm_types_h
1425     atomic_cas_ptr
1426     atomics_native
1427     attribute_may_alias
1428     attribute_packed
1429     cdio_paranoia_h
1430     cdio_paranoia_paranoia_h
1431     CL_cl_h
1432     clock_gettime
1433     closesocket
1434     CommandLineToArgvW
1435     cpunop
1436     CryptGenRandom
1437     dcbzl
1438     dev_bktr_ioctl_bt848_h
1439     dev_bktr_ioctl_meteor_h
1440     dev_ic_bt8xx_h
1441     dev_video_bktr_ioctl_bt848_h
1442     dev_video_meteor_ioctl_meteor_h
1443     direct_h
1444     dlfcn_h
1445     dlopen
1446     dos_paths
1447     dxva_h
1448     ebp_available
1449     ebx_available
1450     fast_64bit
1451     fast_clz
1452     fast_cmov
1453     fcntl
1454     fork
1455     getaddrinfo
1456     gethrtime
1457     getopt
1458     GetProcessAffinityMask
1459     GetProcessMemoryInfo
1460     GetProcessTimes
1461     GetSystemTimeAsFileTime
1462     getrusage
1463     getservbyport
1464     gettimeofday
1465     glob
1466     gnu_as
1467     gsm_h
1468     ibm_asm
1469     inet_aton
1470     io_h
1471     inline_asm_labels
1472     isatty
1473     jack_port_get_latency_range
1474     kbhit
1475     ldbrx
1476     libdc1394_1
1477     libdc1394_2
1478     local_aligned_16
1479     local_aligned_8
1480     localtime_r
1481     loongson
1482     lzo1x_999_compress
1483     machine_ioctl_bt848_h
1484     machine_ioctl_meteor_h
1485     machine_rw_barrier
1486     makeinfo
1487     malloc_h
1488     MapViewOfFile
1489     memalign
1490     MemoryBarrier
1491     mkstemp
1492     mm_empty
1493     mmap
1494     mprotect
1495     msvcrt
1496     nanosleep
1497     openjpeg_1_5_openjpeg_h
1498     PeekNamedPipe
1499     perl
1500     pod2man
1501     poll_h
1502     posix_memalign
1503     pragma_deprecated
1504     pthread_cancel
1505     rdtsc
1506     rsync_contimeout
1507     sarestart
1508     sched_getaffinity
1509     sdl
1510     SetConsoleTextAttribute
1511     setmode
1512     setrlimit
1513     Sleep
1514     sndio_h
1515     socklen_t
1516     soundcard_h
1517     strerror_r
1518     struct_addrinfo
1519     struct_group_source_req
1520     struct_ip_mreq_source
1521     struct_ipv6_mreq
1522     struct_pollfd
1523     struct_rusage_ru_maxrss
1524     struct_sctp_event_subscribe
1525     struct_sockaddr_in6
1526     struct_sockaddr_sa_len
1527     struct_sockaddr_storage
1528     struct_stat_st_mtim_tv_nsec
1529     struct_v4l2_frmivalenum_discrete
1530     symver_asm_label
1531     symver_gnu_asm
1532     sync_val_compare_and_swap
1533     sysconf
1534     sysctl
1535     sys_mman_h
1536     sys_param_h
1537     sys_resource_h
1538     sys_select_h
1539     sys_soundcard_h
1540     sys_time_h
1541     sys_un_h
1542     sys_videoio_h
1543     termios_h
1544     texi2html
1545     threads
1546     unistd_h
1547     usleep
1548     vfp_args
1549     VirtualAlloc
1550     windows_h
1551     winsock2_h
1552     xform_asm
1553     xmm_clobbers
1554 "
1555
1556 # options emitted with CONFIG_ prefix but not available on the command line
1557 CONFIG_EXTRA="
1558     aandcttables
1559     ac3dsp
1560     audio_frame_queue
1561     dsputil
1562     exif
1563     frame_thread_encoder
1564     gcrypt
1565     golomb
1566     gplv3
1567     h264chroma
1568     h264dsp
1569     h264pred
1570     h264qpel
1571     hpeldsp
1572     huffman
1573     lgplv3
1574     lpc
1575     mpegaudio
1576     mpegaudiodsp
1577     mpegvideo
1578     mpegvideoenc
1579     nettle
1580     rangecoder
1581     riffdec
1582     riffenc
1583     rtpdec
1584     rtpenc_chain
1585     sinewin
1586     videodsp
1587     vp3dsp
1588 "
1589
1590 CMDLINE_SELECT="
1591     $ARCH_EXT_LIST
1592     $CONFIG_LIST
1593     $HAVE_LIST_CMDLINE
1594     $THREADS_LIST
1595     asm
1596     cross_compile
1597     debug
1598     extra_warnings
1599     logging
1600     lto
1601     optimizations
1602     stripping
1603 "
1604
1605 PATHS_LIST='
1606     bindir
1607     datadir
1608     docdir
1609     incdir
1610     libdir
1611     mandir
1612     prefix
1613     shlibdir
1614 '
1615
1616 CMDLINE_SET="
1617     $PATHS_LIST
1618     ar
1619     arch
1620     as
1621     assert_level
1622     build_suffix
1623     cc
1624     cpu
1625     cross_prefix
1626     cxx
1627     dep_cc
1628     extra_version
1629     host_cc
1630     host_cflags
1631     host_ld
1632     host_ldflags
1633     host_libs
1634     host_os
1635     install
1636     ld
1637     logfile
1638     malloc_prefix
1639     nm
1640     optflags
1641     pkg_config
1642     progs_suffix
1643     random_seed
1644     samples
1645     strip
1646     sysinclude
1647     sysroot
1648     target_exec
1649     target_os
1650     target_path
1651     target_samples
1652     toolchain
1653     valgrind
1654     yasmexe
1655 "
1656
1657 CMDLINE_APPEND="
1658     extra_cflags
1659     extra_cxxflags
1660     host_cppflags
1661 "
1662
1663 # code dependency declarations
1664
1665 # architecture extensions
1666
1667 armv5te_deps="arm"
1668 armv6_deps="arm"
1669 armv6t2_deps="arm"
1670 neon_deps="arm"
1671 vfp_deps="arm"
1672 vfpv3_deps="vfp"
1673
1674 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1675
1676 mipsfpu_deps="mips"
1677 mips32r2_deps="mips"
1678 mipsdspr1_deps="mips"
1679 mipsdspr2_deps="mips"
1680
1681 altivec_deps="ppc"
1682 ppc4xx_deps="ppc"
1683
1684 vis_deps="sparc"
1685
1686 cpunop_deps="i686"
1687 x86_64_select="i686"
1688 x86_64_suggest="fast_cmov"
1689
1690 amd3dnow_deps="mmx"
1691 amd3dnowext_deps="amd3dnow"
1692 mmx_deps="x86"
1693 mmxext_deps="mmx"
1694 sse_deps="mmxext"
1695 sse2_deps="sse"
1696 sse3_deps="sse2"
1697 ssse3_deps="sse3"
1698 sse4_deps="ssse3"
1699 sse42_deps="sse4"
1700 avx_deps="sse42"
1701 fma4_deps="avx"
1702
1703 mmx_external_deps="yasm"
1704 mmx_inline_deps="inline_asm"
1705 mmx_suggest="mmx_external mmx_inline"
1706
1707 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1708     eval dep=\$${ext}_deps
1709     eval ${ext}_external_deps='"${dep}_external"'
1710     eval ${ext}_inline_deps='"${dep}_inline"'
1711     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1712 done
1713
1714 aligned_stack_if_any="ppc x86"
1715 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1716 fast_clz_if_any="alpha avr32 mips ppc x86"
1717 fast_unaligned_if_any="ppc x86"
1718
1719 inline_asm_deps="!tms470"
1720 need_memalign="altivec neon sse"
1721
1722 symver_if_any="symver_asm_label symver_gnu_asm"
1723
1724 log2_deps="!msvcrt"
1725
1726 # subsystems
1727 dct_select="rdft"
1728 error_resilience_select="dsputil"
1729 frame_thread_encoder_deps="encoders threads"
1730 lpc_select="dsputil"
1731 mdct_select="fft"
1732 rdft_select="fft"
1733 mpegaudio_select="mpegaudiodsp"
1734 mpegaudiodsp_select="dct"
1735 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1736 mpegvideoenc_select="mpegvideo"
1737
1738 # decoders / encoders
1739 aac_decoder_select="mdct sinewin"
1740 aac_encoder_select="audio_frame_queue mdct sinewin"
1741 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1742 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1743 ac3_encoder_select="mdct ac3dsp dsputil"
1744 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1745 aic_decoder_select="dsputil golomb"
1746 alac_encoder_select="lpc"
1747 als_decoder_select="dsputil"
1748 amrnb_decoder_select="lsp"
1749 amrwb_decoder_select="lsp"
1750 amv_decoder_select="dsputil hpeldsp exif"
1751 amv_encoder_select="aandcttables"
1752 ape_decoder_select="dsputil"
1753 asv1_decoder_select="dsputil"
1754 asv1_encoder_select="dsputil"
1755 asv2_decoder_select="dsputil"
1756 asv2_encoder_select="dsputil"
1757 atrac1_decoder_select="mdct sinewin"
1758 atrac3_decoder_select="mdct"
1759 avrn_decoder_select="exif"
1760 bink_decoder_select="dsputil hpeldsp"
1761 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1762 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1763 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1764 cllc_decoder_select="dsputil"
1765 comfortnoise_encoder_select="lpc"
1766 cook_decoder_select="dsputil mdct sinewin"
1767 cscd_decoder_select="lzo"
1768 cscd_decoder_suggest="zlib"
1769 dca_decoder_select="mdct"
1770 dirac_decoder_select="dsputil dwt golomb videodsp"
1771 dnxhd_decoder_select="dsputil"
1772 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1773 dvvideo_decoder_select="dsputil"
1774 dvvideo_encoder_select="dsputil"
1775 dxa_decoder_deps="zlib"
1776 eac3_decoder_select="ac3_decoder"
1777 eac3_encoder_select="ac3_encoder"
1778 eamad_decoder_select="aandcttables dsputil mpegvideo"
1779 eatgq_decoder_select="aandcttables"
1780 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1781 exr_decoder_deps="zlib"
1782 ffv1_decoder_select="dsputil golomb rangecoder"
1783 ffv1_encoder_select="dsputil rangecoder"
1784 ffvhuff_decoder_select="dsputil"
1785 ffvhuff_encoder_select="dsputil huffman"
1786 flac_decoder_select="golomb"
1787 flac_encoder_select="dsputil golomb lpc"
1788 flashsv_decoder_deps="zlib"
1789 flashsv_encoder_deps="zlib"
1790 flashsv2_encoder_deps="zlib"
1791 flashsv2_decoder_deps="zlib"
1792 flv_decoder_select="h263_decoder"
1793 flv_encoder_select="h263_encoder"
1794 fourxm_decoder_select="dsputil"
1795 fraps_decoder_select="dsputil huffman"
1796 g2m_decoder_deps="zlib"
1797 g2m_decoder_select="dsputil"
1798 g729_decoder_select="dsputil"
1799 h261_decoder_select="error_resilience mpegvideo"
1800 h261_encoder_select="aandcttables mpegvideoenc"
1801 h263_decoder_select="error_resilience h263_parser mpegvideo"
1802 h263_encoder_select="aandcttables mpegvideoenc"
1803 h263i_decoder_select="h263_decoder"
1804 h263p_encoder_select="h263_encoder"
1805 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1806 h264_decoder_suggest="error_resilience"
1807 huffyuv_decoder_select="dsputil"
1808 huffyuv_encoder_select="dsputil huffman"
1809 iac_decoder_select="dsputil fft mdct sinewin"
1810 imc_decoder_select="dsputil fft mdct sinewin"
1811 indeo3_decoder_select="hpeldsp"
1812 interplay_video_decoder_select="hpeldsp"
1813 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1814 jpegls_encoder_select="golomb"
1815 jv_decoder_select="dsputil"
1816 lagarith_decoder_select="dsputil"
1817 ljpeg_encoder_select="aandcttables mpegvideoenc"
1818 loco_decoder_select="golomb"
1819 mdec_decoder_select="dsputil error_resilience mpegvideo"
1820 metasound_decoder_select="lsp mdct sinewin"
1821 mimic_decoder_select="dsputil hpeldsp"
1822 mjpeg_decoder_select="dsputil hpeldsp exif"
1823 mjpegb_decoder_select="dsputil hpeldsp exif"
1824 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1825 mlp_decoder_select="dsputil mlp_parser"
1826 motionpixels_decoder_select="dsputil"
1827 mp1_decoder_select="mpegaudio"
1828 mp1float_decoder_select="mpegaudio"
1829 mp2_decoder_select="mpegaudio"
1830 mp2float_decoder_select="mpegaudio"
1831 mp3_decoder_select="mpegaudio"
1832 mp3adu_decoder_select="mpegaudio"
1833 mp3adufloat_decoder_select="mpegaudio"
1834 mp3float_decoder_select="mpegaudio"
1835 mp3on4_decoder_select="mpegaudio"
1836 mp3on4float_decoder_select="mpegaudio"
1837 mpc7_decoder_select="dsputil mpegaudiodsp"
1838 mpc8_decoder_select="dsputil mpegaudiodsp"
1839 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1840 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1841 mpeg1video_decoder_select="error_resilience mpegvideo"
1842 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1843 mpeg2video_decoder_select="error_resilience mpegvideo"
1844 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1845 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1846 mpeg4_encoder_select="h263_encoder"
1847 msmpeg4v1_decoder_select="h263_decoder"
1848 msmpeg4v2_decoder_select="h263_decoder"
1849 msmpeg4v2_encoder_select="h263_encoder"
1850 msmpeg4v3_decoder_select="h263_decoder"
1851 msmpeg4v3_encoder_select="h263_encoder"
1852 mss2_decoder_select="error_resilience vc1_decoder"
1853 mxpeg_decoder_select="dsputil hpeldsp exif"
1854 nellymoser_decoder_select="mdct sinewin"
1855 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1856 nuv_decoder_select="dsputil lzo"
1857 png_decoder_deps="zlib"
1858 png_encoder_deps="zlib"
1859 png_encoder_select="dsputil"
1860 prores_decoder_select="dsputil"
1861 prores_encoder_select="dsputil"
1862 qcelp_decoder_select="lsp"
1863 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1864 ra_144_encoder_select="audio_frame_queue lpc"
1865 ralf_decoder_select="golomb"
1866 rtjpeg_decoder_select="dsputil"
1867 rv10_decoder_select="error_resilience h263_decoder"
1868 rv10_encoder_select="h263_encoder"
1869 rv20_decoder_select="error_resilience h263_decoder"
1870 rv20_encoder_select="h263_encoder"
1871 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1872 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1873 shorten_decoder_select="golomb"
1874 sipr_decoder_select="lsp"
1875 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1876 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1877 sonic_decoder_select="golomb"
1878 sonic_encoder_select="golomb"
1879 sonic_ls_encoder_select="golomb"
1880 sp5x_decoder_select="dsputil hpeldsp exif"
1881 svq1_decoder_select="hpeldsp"
1882 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1883 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1884 svq3_decoder_suggest="error_resilience zlib"
1885 tak_decoder_select="dsputil"
1886 theora_decoder_select="vp3_decoder"
1887 tiff_decoder_suggest="zlib"
1888 tiff_encoder_suggest="zlib"
1889 thp_decoder_select="dsputil hpeldsp exif"
1890 truehd_decoder_select="mlp_parser"
1891 truemotion2_decoder_select="dsputil"
1892 truespeech_decoder_select="dsputil"
1893 tscc_decoder_deps="zlib"
1894 twinvq_decoder_select="mdct lsp sinewin"
1895 utvideo_decoder_select="dsputil"
1896 utvideo_encoder_select="dsputil huffman"
1897 vble_decoder_select="dsputil"
1898 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1899 vc1image_decoder_select="vc1_decoder"
1900 vorbis_decoder_select="mdct"
1901 vorbis_encoder_select="mdct"
1902 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1903 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1904 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1905 vp6a_decoder_select="vp6_decoder"
1906 vp6f_decoder_select="vp6_decoder"
1907 vp8_decoder_select="h264pred videodsp"
1908 webp_decoder_select="vp8_decoder"
1909 wmapro_decoder_select="mdct sinewin"
1910 wmav1_decoder_select="mdct sinewin"
1911 wmav1_encoder_select="mdct sinewin"
1912 wmav2_decoder_select="mdct sinewin"
1913 wmav2_encoder_select="mdct sinewin"
1914 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1915 wmv1_decoder_select="h263_decoder"
1916 wmv1_encoder_select="h263_encoder"
1917 wmv2_decoder_select="h263_decoder videodsp"
1918 wmv2_encoder_select="h263_encoder"
1919 wmv3_decoder_select="vc1_decoder"
1920 wmv3image_decoder_select="wmv3_decoder"
1921 zerocodec_decoder_deps="zlib"
1922 zlib_decoder_deps="zlib"
1923 zlib_encoder_deps="zlib"
1924 zmbv_decoder_deps="zlib"
1925 zmbv_encoder_deps="zlib"
1926
1927 # hardware accelerators
1928 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1929 dxva2_deps="dxva2api_h"
1930 vaapi_deps="va_va_h"
1931 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1932 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1933 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1934
1935 h263_vaapi_hwaccel_deps="vaapi"
1936 h263_vaapi_hwaccel_select="h263_decoder"
1937 h263_vdpau_hwaccel_deps="vdpau"
1938 h263_vdpau_hwaccel_select="h263_decoder"
1939 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1940 h264_dxva2_hwaccel_deps="dxva2"
1941 h264_dxva2_hwaccel_select="h264_decoder"
1942 h264_vaapi_hwaccel_deps="vaapi"
1943 h264_vaapi_hwaccel_select="h264_decoder"
1944 h264_vda_decoder_deps="vda"
1945 h264_vda_decoder_select="h264_decoder"
1946 h264_vda_hwaccel_deps="vda"
1947 h264_vda_hwaccel_select="h264_decoder"
1948 h264_vdpau_decoder_deps="vdpau"
1949 h264_vdpau_decoder_select="h264_decoder"
1950 h264_vdpau_hwaccel_deps="vdpau"
1951 h264_vdpau_hwaccel_select="h264_decoder"
1952 mpeg_vdpau_decoder_deps="vdpau"
1953 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1954 mpeg1_vdpau_decoder_deps="vdpau"
1955 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1956 mpeg1_vdpau_hwaccel_deps="vdpau"
1957 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1958 mpeg2_crystalhd_decoder_select="crystalhd"
1959 mpeg2_dxva2_hwaccel_deps="dxva2"
1960 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1961 mpeg2_vaapi_hwaccel_deps="vaapi"
1962 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1963 mpeg2_vdpau_hwaccel_deps="vdpau"
1964 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1965 mpeg4_crystalhd_decoder_select="crystalhd"
1966 mpeg4_vaapi_hwaccel_deps="vaapi"
1967 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1968 mpeg4_vdpau_decoder_deps="vdpau"
1969 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1970 mpeg4_vdpau_hwaccel_deps="vdpau"
1971 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1972 msmpeg4_crystalhd_decoder_select="crystalhd"
1973 vc1_crystalhd_decoder_select="crystalhd"
1974 vc1_dxva2_hwaccel_deps="dxva2"
1975 vc1_dxva2_hwaccel_select="vc1_decoder"
1976 vc1_vaapi_hwaccel_deps="vaapi"
1977 vc1_vaapi_hwaccel_select="vc1_decoder"
1978 vc1_vdpau_decoder_deps="vdpau"
1979 vc1_vdpau_decoder_select="vc1_decoder"
1980 vc1_vdpau_hwaccel_deps="vdpau"
1981 vc1_vdpau_hwaccel_select="vc1_decoder"
1982 wmv3_crystalhd_decoder_select="crystalhd"
1983 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1984 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1985 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1986 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1987
1988 # parsers
1989 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1990 mpeg4video_parser_select="error_resilience mpegvideo"
1991 mpegvideo_parser_select="error_resilience mpegvideo"
1992 vc1_parser_select="mpegvideo"
1993
1994 # external libraries
1995 libaacplus_encoder_deps="libaacplus"
1996 libcelt_decoder_deps="libcelt"
1997 libfaac_encoder_deps="libfaac"
1998 libfaac_encoder_select="audio_frame_queue"
1999 libfdk_aac_decoder_deps="libfdk_aac"
2000 libfdk_aac_encoder_deps="libfdk_aac"
2001 libfdk_aac_encoder_select="audio_frame_queue"
2002 libgme_demuxer_deps="libgme"
2003 libgsm_decoder_deps="libgsm"
2004 libgsm_encoder_deps="libgsm"
2005 libgsm_ms_decoder_deps="libgsm"
2006 libgsm_ms_encoder_deps="libgsm"
2007 libilbc_decoder_deps="libilbc"
2008 libilbc_encoder_deps="libilbc"
2009 libmodplug_demuxer_deps="libmodplug"
2010 libmp3lame_encoder_deps="libmp3lame"
2011 libmp3lame_encoder_select="audio_frame_queue"
2012 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2013 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2014 libopencore_amrnb_encoder_select="audio_frame_queue"
2015 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2016 libopenjpeg_decoder_deps="libopenjpeg"
2017 libopenjpeg_encoder_deps="libopenjpeg"
2018 libopus_decoder_deps="libopus"
2019 libopus_encoder_deps="libopus"
2020 libopus_encoder_select="audio_frame_queue"
2021 libquvi_demuxer_deps="libquvi"
2022 libschroedinger_decoder_deps="libschroedinger"
2023 libschroedinger_encoder_deps="libschroedinger"
2024 libshine_encoder_deps="libshine"
2025 libshine_encoder_select="audio_frame_queue"
2026 libspeex_decoder_deps="libspeex"
2027 libspeex_encoder_deps="libspeex"
2028 libspeex_encoder_select="audio_frame_queue"
2029 libstagefright_h264_decoder_deps="libstagefright_h264"
2030 libtheora_encoder_deps="libtheora"
2031 libtwolame_encoder_deps="libtwolame"
2032 libvo_aacenc_encoder_deps="libvo_aacenc"
2033 libvo_aacenc_encoder_select="audio_frame_queue"
2034 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2035 libvorbis_decoder_deps="libvorbis"
2036 libvorbis_encoder_deps="libvorbis"
2037 libvorbis_encoder_select="audio_frame_queue"
2038 libvpx_vp8_decoder_deps="libvpx"
2039 libvpx_vp8_encoder_deps="libvpx"
2040 libvpx_vp9_decoder_deps="libvpx"
2041 libvpx_vp9_encoder_deps="libvpx"
2042 libwavpack_encoder_deps="libwavpack"
2043 libx264_encoder_deps="libx264"
2044 libx264rgb_encoder_deps="libx264"
2045 libxavs_encoder_deps="libxavs"
2046 libxvid_encoder_deps="libxvid"
2047 libutvideo_decoder_deps="libutvideo"
2048 libutvideo_encoder_deps="libutvideo"
2049 libzvbi_teletext_decoder_deps="libzvbi"
2050
2051 # demuxers / muxers
2052 ac3_demuxer_select="ac3_parser"
2053 asf_demuxer_select="riffdec"
2054 asf_muxer_select="riffenc"
2055 asf_stream_muxer_select="asf_muxer"
2056 avi_demuxer_select="riffdec"
2057 avi_muxer_select="riffenc"
2058 avisynth_demuxer_deps="avisynth"
2059 avisynth_demuxer_select="riffdec"
2060 caf_demuxer_select="riffdec"
2061 dirac_demuxer_select="dirac_parser"
2062 dts_demuxer_select="dca_parser"
2063 dtshd_demuxer_select="dca_parser"
2064 dxa_demuxer_select="riffdec"
2065 eac3_demuxer_select="ac3_parser"
2066 f4v_muxer_select="mov_muxer"
2067 flac_demuxer_select="flac_parser"
2068 hls_muxer_select="mpegts_muxer"
2069 ipod_muxer_select="mov_muxer"
2070 ismv_muxer_select="mov_muxer"
2071 libnut_demuxer_deps="libnut"
2072 libnut_muxer_deps="libnut"
2073 matroska_audio_muxer_select="matroska_muxer"
2074 matroska_demuxer_select="riffdec"
2075 matroska_demuxer_suggest="bzlib lzo zlib"
2076 matroska_muxer_select="riffenc"
2077 mmf_muxer_select="riffenc"
2078 mov_demuxer_select="riffdec"
2079 mov_demuxer_suggest="zlib"
2080 mov_muxer_select="riffenc rtpenc_chain"
2081 mp3_demuxer_select="mpegaudio_parser"
2082 mp4_muxer_select="mov_muxer"
2083 mpegts_muxer_select="adts_muxer latm_muxer"
2084 mpegtsraw_demuxer_select="mpegts_demuxer"
2085 mxf_d10_muxer_select="mxf_muxer"
2086 nut_muxer_select="riffenc"
2087 nuv_demuxer_select="riffdec"
2088 ogg_demuxer_select="golomb"
2089 psp_muxer_select="mov_muxer"
2090 rtp_demuxer_select="sdp_demuxer"
2091 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2092 rtsp_demuxer_select="http_protocol rtpdec"
2093 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2094 sap_demuxer_select="sdp_demuxer"
2095 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2096 sdp_demuxer_select="rtpdec"
2097 smoothstreaming_muxer_select="ismv_muxer"
2098 spdif_muxer_select="aac_parser"
2099 tak_demuxer_select="tak_parser"
2100 tg2_muxer_select="mov_muxer"
2101 tgp_muxer_select="mov_muxer"
2102 vobsub_demuxer_select="mpegps_demuxer"
2103 w64_demuxer_select="wav_demuxer"
2104 w64_muxer_select="wav_muxer"
2105 wav_demuxer_select="riffdec"
2106 wav_muxer_select="riffenc"
2107 webm_muxer_select="riffenc"
2108 wtv_demuxer_select="riffdec"
2109 xmv_demuxer_select="riffdec"
2110 xwma_demuxer_select="riffdec"
2111
2112 # indevs / outdevs
2113 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2114 alsa_outdev_deps="alsa_asoundlib_h"
2115 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2116 caca_outdev_deps="libcaca"
2117 dshow_indev_deps="IBaseFilter"
2118 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2119 dv1394_indev_deps="dv1394"
2120 dv1394_indev_select="dv_demuxer"
2121 fbdev_indev_deps="linux_fb_h"
2122 iec61883_indev_deps="libiec61883"
2123 jack_indev_deps="jack_jack_h sem_timedwait"
2124 lavfi_indev_deps="avfilter"
2125 libcdio_indev_deps="libcdio"
2126 libdc1394_indev_deps="libdc1394"
2127 libv4l2_indev_deps="libv4l2"
2128 openal_indev_deps="openal"
2129 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2130 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2131 pulse_indev_deps="libpulse"
2132 sdl_outdev_deps="sdl"
2133 sndio_indev_deps="sndio_h"
2134 sndio_outdev_deps="sndio_h"
2135 v4l_indev_deps="linux_videodev_h"
2136 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2137 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2138 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2139 vfwcap_indev_extralibs="-lavicap32"
2140 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2141 xv_outdev_extralibs="-lXv -lX11 -lXext"
2142 x11grab_indev_deps="x11grab"
2143
2144 # protocols
2145 bluray_protocol_deps="libbluray"
2146 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2147 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2148 ffrtmpcrypt_protocol_select="tcp_protocol"
2149 ffrtmphttp_protocol_deps="!librtmp_protocol"
2150 ffrtmphttp_protocol_select="http_protocol"
2151 ftp_protocol_select="tcp_protocol"
2152 gopher_protocol_select="network"
2153 httpproxy_protocol_select="tcp_protocol"
2154 http_protocol_select="tcp_protocol"
2155 https_protocol_select="tls_protocol"
2156 librtmp_protocol_deps="librtmp"
2157 librtmpe_protocol_deps="librtmp"
2158 librtmps_protocol_deps="librtmp"
2159 librtmpt_protocol_deps="librtmp"
2160 librtmpte_protocol_deps="librtmp"
2161 mmsh_protocol_select="http_protocol"
2162 mmst_protocol_select="network"
2163 rtmp_protocol_deps="!librtmp_protocol"
2164 rtmp_protocol_select="tcp_protocol"
2165 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2166 rtmps_protocol_deps="!librtmp_protocol"
2167 rtmps_protocol_select="tls_protocol"
2168 rtmpt_protocol_select="ffrtmphttp_protocol"
2169 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2170 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2171 rtp_protocol_select="udp_protocol"
2172 sctp_protocol_deps="struct_sctp_event_subscribe"
2173 sctp_protocol_select="network"
2174 srtp_protocol_select="rtp_protocol"
2175 tcp_protocol_select="network"
2176 tls_protocol_deps_any="openssl gnutls"
2177 tls_protocol_select="tcp_protocol"
2178 udp_protocol_select="network"
2179 unix_protocol_deps="sys_un_h"
2180 unix_protocol_select="network"
2181
2182 # filters
2183 aconvert_filter_deps="swresample"
2184 amovie_filter_deps="avcodec avformat"
2185 aresample_filter_deps="swresample"
2186 ass_filter_deps="libass"
2187 asyncts_filter_deps="avresample"
2188 atempo_filter_deps="avcodec rdft"
2189 azmq_filter_deps="libzmq"
2190 blackframe_filter_deps="gpl"
2191 boxblur_filter_deps="gpl"
2192 colormatrix_filter_deps="gpl"
2193 cropdetect_filter_deps="gpl"
2194 dctdnoiz_filter_deps="avcodec fft"
2195 delogo_filter_deps="gpl"
2196 deshake_filter_deps="avcodec"
2197 deshake_filter_select="dsputil"
2198 drawtext_filter_deps="libfreetype"
2199 ebur128_filter_deps="gpl"
2200 flite_filter_deps="libflite"
2201 frei0r_filter_deps="frei0r dlopen"
2202 frei0r_filter_extralibs='$ldl'
2203 frei0r_src_filter_deps="frei0r dlopen"
2204 frei0r_src_filter_extralibs='$ldl'
2205 geq_filter_deps="gpl"
2206 histeq_filter_deps="gpl"
2207 hqdn3d_filter_deps="gpl"
2208 interlace_filter_deps="gpl"
2209 kerndeint_filter_deps="gpl"
2210 mcdeint_filter_deps="avcodec gpl"
2211 movie_filter_deps="avcodec avformat"
2212 mp_filter_deps="gpl avcodec swscale inline_asm"
2213 mpdecimate_filter_deps="gpl avcodec"
2214 mptestsrc_filter_deps="gpl"
2215 negate_filter_deps="lut_filter"
2216 noise_filter_deps="gpl"
2217 perspective_filter_deps="gpl"
2218 resample_filter_deps="avresample"
2219 ocv_filter_deps="libopencv"
2220 owdenoise_filter_deps="gpl"
2221 pan_filter_deps="swresample"
2222 phase_filter_deps="gpl"
2223 pp_filter_deps="gpl postproc"
2224 pullup_filter_deps="gpl"
2225 removelogo_filter_deps="avcodec avformat swscale"
2226 sab_filter_deps="gpl swscale"
2227 scale_filter_deps="swscale"
2228 smartblur_filter_deps="gpl swscale"
2229 showspectrum_filter_deps="avcodec rdft"
2230 spp_filter_deps="gpl avcodec fft"
2231 stereo3d_filter_deps="gpl"
2232 subtitles_filter_deps="avformat avcodec libass"
2233 super2xsai_filter_deps="gpl"
2234 tinterlace_filter_deps="gpl"
2235 vidstabdetect_filter_deps="libvidstab"
2236 vidstabtransform_filter_deps="libvidstab"
2237 yadif_filter_deps="gpl"
2238 pixfmts_super2xsai_test_deps="super2xsai_filter"
2239 tinterlace_merge_test_deps="tinterlace_filter"
2240 tinterlace_pad_test_deps="tinterlace_filter"
2241 zmq_filter_deps="libzmq"
2242
2243 # libraries
2244 avcodec_deps="avutil"
2245 avdevice_deps="avutil avcodec avformat"
2246 avfilter_deps="avutil"
2247 avformat_deps="avutil avcodec"
2248 avresample_deps="avutil"
2249 postproc_deps="avutil gpl"
2250 swscale_deps="avutil"
2251
2252 # programs
2253 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2254 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2255                null_filter
2256                setpts_filter trim_filter"
2257 ffplay_deps="avcodec avformat swscale swresample sdl"
2258 ffplay_select="rdft crop_filter"
2259 ffprobe_deps="avcodec avformat"
2260 ffserver_deps="avformat fork sarestart"
2261 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2262 ffserver_extralibs='$ldl'
2263
2264 # documentation
2265 podpages_deps="perl"
2266 manpages_deps="perl pod2man"
2267 htmlpages_deps="texi2html"
2268 txtpages_deps="makeinfo"
2269 doc_deps_any="manpages htmlpages podpages txtpages"
2270
2271 # default parameters
2272
2273 logfile="config.log"
2274
2275 # installation paths
2276 prefix_default="/usr/local"
2277 bindir_default='${prefix}/bin'
2278 datadir_default='${prefix}/share/ffmpeg'
2279 docdir_default='${prefix}/share/doc/ffmpeg'
2280 incdir_default='${prefix}/include'
2281 libdir_default='${prefix}/lib'
2282 mandir_default='${prefix}/share/man'
2283 shlibdir_default="$libdir_default"
2284
2285 # toolchain
2286 ar_default="ar"
2287 cc_default="gcc"
2288 cxx_default="g++"
2289 host_cc_default="gcc"
2290 cp_f="cp -f"
2291 install="install"
2292 ln_s="ln -s -f"
2293 nm_default="nm -g"
2294 objformat="elf"
2295 pkg_config_default=pkg-config
2296 ranlib="ranlib"
2297 strip_default="strip"
2298 yasmexe_default="yasm"
2299
2300 nogas=":"
2301
2302 # machine
2303 arch_default=$(uname -m)
2304 cpu="generic"
2305
2306 # OS
2307 target_os_default=$(tolower $(uname -s))
2308 host_os=$target_os_default
2309
2310 # configurable options
2311 enable $PROGRAM_LIST
2312 enable $DOCUMENT_LIST
2313 enable $(filter_out avresample $LIBRARY_LIST)
2314 enable stripping
2315
2316 enable asm
2317 enable debug
2318 enable doc
2319 enable optimizations
2320 enable runtime_cpudetect
2321 enable safe_bitstream_reader
2322 enable static
2323 enable swscale_alpha
2324
2325 # Enable hwaccels by default.
2326 enable dxva2 vaapi vdpau
2327
2328 # build settings
2329 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2330 LIBPREF="lib"
2331 LIBSUF=".a"
2332 FULLNAME='$(NAME)$(BUILDSUF)'
2333 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2334 SLIBPREF="lib"
2335 SLIBSUF=".so"
2336 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2337 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2338 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2339 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2340 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2341 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2342
2343 asflags_filter=echo
2344 cflags_filter=echo
2345 ldflags_filter=echo
2346
2347 AS_C='-c'
2348 AS_O='-o $@'
2349 CC_C='-c'
2350 CC_E='-E -o $@'
2351 CC_O='-o $@'
2352 CXX_C='-c'
2353 CXX_O='-o $@'
2354 LD_O='-o $@'
2355 LD_LIB='-l%'
2356 LD_PATH='-L'
2357 HOSTCC_C='-c'
2358 HOSTCC_O='-o $@'
2359 HOSTLD_O='-o $@'
2360
2361 host_cflags='-O3 -g'
2362 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2363 host_libs='-lm'
2364 host_cflags_filter=echo
2365 host_ldflags_filter=echo
2366
2367 target_path='$(CURDIR)'
2368
2369 # since the object filename is not given with the -MM flag, the compiler
2370 # is only able to print the basename, and we must add the path ourselves
2371 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2372 DEPFLAGS='-MM'
2373
2374 # find source path
2375 if test -f configure; then
2376     source_path=.
2377 else
2378     source_path=$(cd $(dirname "$0"); pwd)
2379     echo "$source_path" | grep -q '[[:blank:]]' &&
2380         die "Out of tree builds are impossible with whitespace in source path."
2381     test -e "$source_path/config.h" &&
2382         die "Out of tree builds are impossible with config.h in source dir."
2383 fi
2384
2385 for v in "$@"; do
2386     r=${v#*=}
2387     l=${v%"$r"}
2388     r=$(sh_quote "$r")
2389     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2390 done
2391
2392 find_things(){
2393     thing=$1
2394     pattern=$2
2395     file=$source_path/$3
2396     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2397 }
2398
2399 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2400 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2401 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2402 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2403 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2404 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2405 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2406 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2407 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2408 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2409 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2410
2411 ALL_COMPONENTS="
2412     $BSF_LIST
2413     $DECODER_LIST
2414     $DEMUXER_LIST
2415     $ENCODER_LIST
2416     $FILTER_LIST
2417     $HWACCEL_LIST
2418     $INDEV_LIST
2419     $MUXER_LIST
2420     $OUTDEV_LIST
2421     $PARSER_LIST
2422     $PROTOCOL_LIST
2423 "
2424
2425 for n in $COMPONENT_LIST; do
2426     v=$(toupper ${n%s})_LIST
2427     eval enable \$$v
2428     eval ${n}_if_any="\$$v"
2429 done
2430
2431 enable $ARCH_EXT_LIST
2432
2433 die_unknown(){
2434     echo "Unknown option \"$1\"."
2435     echo "See $0 --help for available options."
2436     exit 1
2437 }
2438
2439 print_3_columns() {
2440     cat | tr ' ' '\n' | sort | pr -r -3 -t
2441 }
2442
2443 show_list() {
2444     suffix=_$1
2445     shift
2446     echo $* | sed s/$suffix//g | print_3_columns
2447     exit 0
2448 }
2449
2450 rand_list(){
2451     IFS=', '
2452     set -- $*
2453     unset IFS
2454     for thing; do
2455         comp=${thing%:*}
2456         prob=${thing#$comp}
2457         prob=${prob#:}
2458         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2459         echo "prob ${prob:-0.5}"
2460         printf '%s\n' $comp
2461     done
2462 }
2463
2464 do_random(){
2465     action=$1
2466     shift
2467     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2468     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2469 }
2470
2471 for opt do
2472     optval="${opt#*=}"
2473     case "$opt" in
2474         --extra-ldflags=*)
2475             add_ldflags $optval
2476         ;;
2477         --extra-libs=*)
2478             add_extralibs $optval
2479         ;;
2480         --disable-devices)
2481             disable $INDEV_LIST $OUTDEV_LIST
2482         ;;
2483         --enable-debug=*)
2484             debuglevel="$optval"
2485         ;;
2486         --disable-programs)
2487             disable $PROGRAM_LIST
2488         ;;
2489         --disable-everything)
2490             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2491         ;;
2492         --disable-all)
2493             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2494             disable $LIBRARY_LIST $PROGRAM_LIST doc
2495         ;;
2496         --enable-random|--disable-random)
2497             action=${opt%%-random}
2498             do_random ${action#--} $COMPONENT_LIST
2499         ;;
2500         --enable-random=*|--disable-random=*)
2501             action=${opt%%-random=*}
2502             do_random ${action#--} $optval
2503         ;;
2504         --enable-*=*|--disable-*=*)
2505             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2506             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2507             eval list=\$$(toupper $thing)_LIST
2508             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2509             list=$(filter "$name" $list)
2510             [ "$list" = "" ] && warn "Option $opt did not match anything"
2511             $action $list
2512         ;;
2513         --enable-?*|--disable-?*)
2514             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2515             if is_in $option $COMPONENT_LIST; then
2516                 test $action = disable && action=unset
2517                 eval $action \$$(toupper ${option%s})_LIST
2518             elif is_in $option $CMDLINE_SELECT; then
2519                 $action $option
2520             else
2521                 die_unknown $opt
2522             fi
2523         ;;
2524         --list-*)
2525             NAME="${opt#--list-}"
2526             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2527             NAME=${NAME%s}
2528             eval show_list $NAME \$$(toupper $NAME)_LIST
2529         ;;
2530         --help|-h) show_help
2531         ;;
2532         --fatal-warnings) enable fatal_warnings
2533         ;;
2534         *)
2535             optname="${opt%%=*}"
2536             optname="${optname#--}"
2537             optname=$(echo "$optname" | sed 's/-/_/g')
2538             if is_in $optname $CMDLINE_SET; then
2539                 eval $optname='$optval'
2540             elif is_in $optname $CMDLINE_APPEND; then
2541                 append $optname "$optval"
2542             else
2543                 die_unknown $opt
2544             fi
2545         ;;
2546     esac
2547 done
2548
2549 disabled logging && logfile=/dev/null
2550
2551 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2552 set >> $logfile
2553
2554 test -n "$cross_prefix" && enable cross_compile
2555
2556 if enabled cross_compile; then
2557     test -n "$arch" && test -n "$target_os" ||
2558         die "Must specify target arch and OS when cross-compiling"
2559 fi
2560
2561 ar_default="${cross_prefix}${ar_default}"
2562 cc_default="${cross_prefix}${cc_default}"
2563 cxx_default="${cross_prefix}${cxx_default}"
2564 nm_default="${cross_prefix}${nm_default}"
2565 pkg_config_default="${cross_prefix}${pkg_config_default}"
2566 ranlib="${cross_prefix}${ranlib}"
2567 strip_default="${cross_prefix}${strip_default}"
2568
2569 sysinclude_default="${sysroot}/usr/include"
2570
2571 test -n "$valgrind" && toolchain="valgrind-memcheck"
2572
2573 case "$toolchain" in
2574     clang-asan)
2575         cc_default="clang"
2576         add_cflags  -fsanitize=address
2577         add_ldflags -fsanitize=address
2578     ;;
2579     clang-tsan)
2580         cc_default="clang"
2581         add_cflags  -fsanitize=thread -pie
2582         add_ldflags -fsanitize=thread -pie
2583     ;;
2584     gcc-asan)
2585         cc_default="gcc"
2586         add_cflags  -fsanitize=address
2587         add_ldflags -fsanitize=address
2588     ;;
2589     gcc-tsan)
2590         cc_default="gcc"
2591         add_cflags  -fsanitize=thread -pie -fPIC
2592         add_ldflags -fsanitize=thread -pie -fPIC
2593     ;;
2594     valgrind-massif)
2595         target_exec_default=${valgrind:-"valgrind"}
2596         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2597     ;;
2598     valgrind-memcheck)
2599         target_exec_default=${valgrind:-"valgrind"}
2600         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2601     ;;
2602     msvc)
2603         cc_default="c99wrap cl"
2604         ld_default="c99wrap link"
2605         nm_default="dumpbin -symbols"
2606         ar_default="lib"
2607         target_os_default="win32"
2608     ;;
2609     icl)
2610         cc_default="c99wrap -noconv icl"
2611         ld_default="c99wrap xilink"
2612         nm_default="dumpbin -symbols"
2613         ar_default="xilib"
2614         target_os_default="win32"
2615     ;;
2616     gcov)
2617         add_cflags  -fprofile-arcs -ftest-coverage
2618         add_ldflags -fprofile-arcs -ftest-coverage
2619     ;;
2620     ?*)
2621         die "Unknown toolchain $toolchain"
2622     ;;
2623 esac
2624
2625 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2626 enabled cross_compile || host_cc_default=$cc
2627 set_default host_cc
2628
2629 if ! $pkg_config --version >/dev/null 2>&1; then
2630     warn "$pkg_config not found, library detection may fail."
2631     pkg_config=false
2632 fi
2633
2634 exesuf() {
2635     case $1 in
2636         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2637     esac
2638 }
2639
2640 EXESUF=$(exesuf $target_os)
2641 HOSTEXESUF=$(exesuf $host_os)
2642
2643 # set temporary file name
2644 : ${TMPDIR:=$TEMPDIR}
2645 : ${TMPDIR:=$TMP}
2646 : ${TMPDIR:=/tmp}
2647
2648 if ! check_cmd mktemp -u XXXXXX; then
2649     # simple replacement for missing mktemp
2650     # NOT SAFE FOR GENERAL USE
2651     mktemp(){
2652         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2653     }
2654 fi
2655
2656 tmpfile(){
2657     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2658         (set -C; exec > $tmp) 2>/dev/null ||
2659         die "Unable to create temporary file in $TMPDIR."
2660     append TMPFILES $tmp
2661     eval $1=$tmp
2662 }
2663
2664 trap 'rm -f -- $TMPFILES' EXIT
2665
2666 tmpfile TMPASM .asm
2667 tmpfile TMPC   .c
2668 tmpfile TMPCPP .cpp
2669 tmpfile TMPE   $EXESUF
2670 tmpfile TMPH   .h
2671 tmpfile TMPO   .o
2672 tmpfile TMPS   .S
2673 tmpfile TMPSH  .sh
2674 tmpfile TMPV   .ver
2675
2676 unset -f mktemp
2677
2678 chmod +x $TMPE
2679
2680 # make sure we can execute files in $TMPDIR
2681 cat > $TMPSH 2>> $logfile <<EOF
2682 #! /bin/sh
2683 EOF
2684 chmod +x $TMPSH >> $logfile 2>&1
2685 if ! $TMPSH >> $logfile 2>&1; then
2686     cat <<EOF
2687 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2688 variable to another directory and make sure that it is not mounted noexec.
2689 EOF
2690     die "Sanity test failed."
2691 fi
2692
2693 ccc_flags(){
2694     for flag; do
2695         case $flag in
2696             -std=c99)           echo -c99                       ;;
2697             -mcpu=*)            echo -arch ${flag#*=}           ;;
2698             -mieee)             echo -ieee                      ;;
2699             -O*|-fast)          echo $flag                      ;;
2700             -fno-math-errno)    echo -assume nomath_errno       ;;
2701             -g)                 echo -g3                        ;;
2702             -Wall)              echo -msg_enable level2         ;;
2703             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2704             -Wl,*)              echo $flag                      ;;
2705             -f*|-W*)                                            ;;
2706             *)                  echo $flag                      ;;
2707         esac
2708    done
2709 }
2710
2711 msvc_common_flags(){
2712     for flag; do
2713         case $flag in
2714             # In addition to specifying certain flags under the compiler
2715             # specific filters, they must be specified here as well or else the
2716             # generic catch all at the bottom will print the original flag.
2717             -Wall)                ;;
2718             -std=c99)             ;;
2719             # Common flags
2720             -fomit-frame-pointer) ;;
2721             -g)                   echo -Z7 ;;
2722             -fno-math-errno)      ;;
2723             -fno-common)          ;;
2724             -fno-signed-zeros)    ;;
2725             -fPIC)                ;;
2726             -mthumb)              ;;
2727             -march=*)             ;;
2728             -lz)                  echo zlib.lib ;;
2729             -lavifil32)           echo vfw32.lib ;;
2730             -lavicap32)           echo vfw32.lib user32.lib ;;
2731             -l*)                  echo ${flag#-l}.lib ;;
2732             *)                    echo $flag ;;
2733         esac
2734     done
2735 }
2736
2737 msvc_flags(){
2738     msvc_common_flags "$@"
2739     for flag; do
2740         case $flag in
2741             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2742                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2743                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2744                                        -wd4554 \
2745                                        -wd4996 -wd4273 ;;
2746         esac
2747     done
2748 }
2749
2750 icl_flags(){
2751     msvc_common_flags "$@"
2752     for flag; do
2753         case $flag in
2754             # Despite what Intel's documentation says -Wall, which is supported
2755             # on Windows, does enable remarks so disable them here.
2756             -Wall)                echo $flag -Qdiag-disable:remark ;;
2757             -std=c99)             echo -Qstd=c99 ;;
2758         esac
2759     done
2760 }
2761
2762 pgi_flags(){
2763     for flag; do
2764         case $flag in
2765             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2766             -fomit-frame-pointer) echo -Mnoframe ;;
2767             -g)                   echo -gopt ;;
2768             *)                    echo $flag ;;
2769         esac
2770     done
2771 }
2772
2773 suncc_flags(){
2774     for flag; do
2775         case $flag in
2776             -march=*|-mcpu=*)
2777                 case "${flag#*=}" in
2778                     native)                   echo -xtarget=native       ;;
2779                     v9|niagara)               echo -xarch=sparc          ;;
2780                     ultrasparc)               echo -xarch=sparcvis       ;;
2781                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2782                     i586|pentium)             echo -xchip=pentium        ;;
2783                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2784                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2785                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2786                     pentium4*)          echo -xtarget=pentium4           ;;
2787                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2788                     *-sse3)             echo -xarch=sse3                 ;;
2789                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2790                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2791                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2792                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2793                     bdver*)                    echo -xarch=avx           ;;
2794                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2795                     k8|opteron|athlon64|athlon-fx)
2796                                                echo -xarch=sse2a         ;;
2797                     athlon*)                   echo -xarch=pentium_proa  ;;
2798                 esac
2799                 ;;
2800             -std=c99)             echo -xc99              ;;
2801             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2802             -fPIC)                echo -KPIC -xcode=pic32 ;;
2803             -W*,*)                echo $flag              ;;
2804             -f*-*|-W*|-mimpure-text)                      ;;
2805             -shared)              echo -G                 ;;
2806             *)                    echo $flag              ;;
2807         esac
2808     done
2809 }
2810
2811 tms470_flags(){
2812     for flag; do
2813         case $flag in
2814             -march=*|-mcpu=*)
2815                 case "${flag#*=}" in
2816                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2817                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2818                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2819                     armv6*|arm11*)          echo -mv=6   ;;
2820                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2821                                             echo -mv=5e  ;;
2822                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2823                 esac
2824                 ;;
2825             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2826             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2827             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2828             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2829             -msoft-float)   echo --float_support=vfplib       ;;
2830             -O[0-3]|-mf=*)  echo $flag                        ;;
2831             -g)             echo -g -mn                       ;;
2832             -pds=*)         echo $flag                        ;;
2833             -D*|-I*)        echo $flag                        ;;
2834             --gcc|--abi=*)  echo $flag                        ;;
2835             -me)            echo $flag                        ;;
2836         esac
2837     done
2838 }
2839
2840 probe_cc(){
2841     pfx=$1
2842     _cc=$2
2843
2844     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2845     unset _ld_o _ldflags _ld_lib _ld_path
2846     unset _depflags _DEPCMD _DEPFLAGS
2847     _flags_filter=echo
2848
2849     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2850         _type=llvm_gcc
2851         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2852         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2853         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2854         _cflags_speed='-O3'
2855         _cflags_size='-Os'
2856     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2857         _type=gcc
2858         gcc_version=$($_cc --version | head -n1)
2859         gcc_basever=$($_cc -dumpversion)
2860         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2861         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2862         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2863         if ! $_cc -dumpversion | grep -q '^2\.'; then
2864             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2865         fi
2866         _cflags_speed='-O3'
2867         _cflags_size='-Os'
2868     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2869         _type=icc
2870         _ident=$($_cc --version | head -n1)
2871         _depflags='-MMD'
2872         _cflags_speed='-O3'
2873         _cflags_size='-Os'
2874         _cflags_noopt='-O1'
2875     elif $_cc -v 2>&1 | grep -q xlc; then
2876         _type=xlc
2877         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2878         _cflags_speed='-O5'
2879         _cflags_size='-O5 -qcompact'
2880     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2881         _type=ccc
2882         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2883         _DEPFLAGS='-M'
2884         _cflags_speed='-fast'
2885         _cflags_size='-O1'
2886         _flags_filter=ccc_flags
2887     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2888         test -d "$sysroot" || die "No valid sysroot specified."
2889         _type=armcc
2890         _ident=$($_cc --vsn | head -n1)
2891         armcc_conf="$PWD/armcc.conf"
2892         $_cc --arm_linux_configure                 \
2893              --arm_linux_config_file="$armcc_conf" \
2894              --configure_sysroot="$sysroot"        \
2895              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2896              die "Error creating armcc configuration file."
2897         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2898         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2899         as_default="${cross_prefix}gcc"
2900         _depflags='-MMD'
2901         _cflags_speed='-O3'
2902         _cflags_size='-Os'
2903     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2904         _type=tms470
2905         _ident=$($_cc -version | head -n1 | tr -s ' ')
2906         _flags='--gcc --abi=eabi -me'
2907         _cc_e='-ppl -fe=$@'
2908         _cc_o='-fe=$@'
2909         _depflags='-ppa -ppd=$(@:.o=.d)'
2910         _cflags_speed='-O3 -mf=5'
2911         _cflags_size='-O3 -mf=2'
2912         _flags_filter=tms470_flags
2913     elif $_cc -v 2>&1 | grep -q clang; then
2914         _type=clang
2915         _ident=$($_cc --version | head -n1)
2916         _depflags='-MMD'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919     elif $_cc -V 2>&1 | grep -q Sun; then
2920         _type=suncc
2921         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2922         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2923         _DEPFLAGS='-xM1 -xc99'
2924         _ldflags='-std=c99'
2925         _cflags_speed='-O5'
2926         _cflags_size='-O5 -xspace'
2927         _flags_filter=suncc_flags
2928     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2929         _type=pathscale
2930         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2931         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2932         _cflags_speed='-O2'
2933         _cflags_size='-Os'
2934         _flags_filter='filter_out -Wdisabled-optimization'
2935     elif $_cc -v 2>&1 | grep -q Open64; then
2936         _type=open64
2937         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2938         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2939         _cflags_speed='-O2'
2940         _cflags_size='-Os'
2941         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2942     elif $_cc -V 2>&1 | grep -q Portland; then
2943         _type=pgi
2944         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2945         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2946         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2947         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2948         _cflags_noopt="-O"
2949         _flags_filter=pgi_flags
2950     elif $_cc 2>&1 | grep -q Microsoft; then
2951         _type=msvc
2952         _ident=$($cc 2>&1 | head -n1)
2953         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2954         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2955         _cflags_speed="-O2"
2956         _cflags_size="-O1"
2957         # Nonstandard output options, to avoid msys path conversion issues.
2958         # Relies on wrapper to remap it.
2959         if $_cc 2>&1 | grep -q Linker; then
2960             _ld_o='-out $@'
2961         else
2962             _ld_o='-Fe$@'
2963         fi
2964         _cc_o='-Fo $@'
2965         _cc_e='-P -Fi $@'
2966         _flags_filter=msvc_flags
2967         _ld_lib='lib%.a'
2968         _ld_path='-libpath:'
2969         _flags='-nologo'
2970         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2971         if [ $pfx = hostcc ]; then
2972             append _cflags -Dsnprintf=_snprintf
2973         fi
2974         disable stripping
2975     elif $_cc 2>&1 | grep -q Intel; then
2976         _type=icl
2977         _ident=$($cc 2>&1 | head -n1)
2978         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2979         # Not only is O3 broken on 13.x+ but it is slower on all previous
2980         # versions (tested) as well.
2981         _cflags_speed="-O2"
2982         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2983         # Nonstandard output options, to avoid msys path conversion issues.
2984         # Relies on wrapper to remap it.
2985         if $_cc 2>&1 | grep -q Linker; then
2986             _ld_o='-out $@'
2987         else
2988             _ld_o='-Fe$@'
2989         fi
2990         _cc_o='-Fo $@'
2991         _cc_e='-P'
2992         _flags_filter=icl_flags
2993         _ld_lib='lib%.a'
2994         _ld_path='-libpath:'
2995         # -Qdiag-error to make icl error when seeing certain unknown arguments
2996         _flags='-nologo -Qdiag-error:4044,10157'
2997         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2998         # with MSVC which enables it by default.
2999         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3000         if [ $pfx = hostcc ]; then
3001             append _cflags -Dsnprintf=_snprintf
3002         fi
3003     fi
3004
3005     eval ${pfx}_type=\$_type
3006     eval ${pfx}_ident=\$_ident
3007 }
3008
3009 set_ccvars(){
3010     eval ${1}_C=\${_cc_c-\${${1}_C}}
3011     eval ${1}_E=\${_cc_e-\${${1}_E}}
3012     eval ${1}_O=\${_cc_o-\${${1}_O}}
3013
3014     if [ -n "$_depflags" ]; then
3015         eval ${1}_DEPFLAGS=\$_depflags
3016     else
3017         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3018         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3019         eval DEP${1}FLAGS=\$_flags
3020     fi
3021 }
3022
3023 probe_cc cc "$cc"
3024 cflags_filter=$_flags_filter
3025 cflags_speed=$_cflags_speed
3026 cflags_size=$_cflags_size
3027 cflags_noopt=$_cflags_noopt
3028 add_cflags $_flags $_cflags
3029 cc_ldflags=$_ldflags
3030 set_ccvars CC
3031
3032 probe_cc hostcc "$host_cc"
3033 host_cflags_filter=$_flags_filter
3034 add_host_cflags  $_flags $_cflags
3035 set_ccvars HOSTCC
3036
3037 test -n "$cc_type" && enable $cc_type ||
3038     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3039
3040 : ${as_default:=$cc}
3041 : ${dep_cc_default:=$cc}
3042 : ${ld_default:=$cc}
3043 : ${host_ld_default:=$host_cc}
3044 set_default ar as dep_cc ld host_ld
3045
3046 probe_cc as "$as"
3047 asflags_filter=$_flags_filter
3048 add_asflags $_flags $_cflags
3049 set_ccvars AS
3050
3051 probe_cc ld "$ld"
3052 ldflags_filter=$_flags_filter
3053 add_ldflags $_flags $_ldflags
3054 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3055 LD_O=${_ld_o-$LD_O}
3056 LD_LIB=${_ld_lib-$LD_LIB}
3057 LD_PATH=${_ld_path-$LD_PATH}
3058
3059 probe_cc hostld "$host_ld"
3060 host_ldflags_filter=$_flags_filter
3061 add_host_ldflags $_flags $_ldflags
3062 HOSTLD_O=${_ld_o-$HOSTLD_O}
3063
3064 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3065     probe_cc depcc "$dep_cc"
3066     CCDEP=${_DEPCMD:-$DEPCMD}
3067     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3068     DEPCCFLAGS=$_flags
3069 fi
3070
3071 if $ar 2>&1 | grep -q Microsoft; then
3072     arflags="-nologo"
3073     ar_o='-out:$@'
3074 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3075     arflags="rq"
3076     ar_o='$@'
3077 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3078     arflags='-Xany -r -c'
3079     ar_o='$@'
3080 else
3081     arflags="rc"
3082     ar_o='$@'
3083 fi
3084
3085 add_cflags $extra_cflags
3086 add_cxxflags $extra_cxxflags
3087 add_asflags $extra_cflags
3088
3089 if test -n "$sysroot"; then
3090     case "$cc_type" in
3091         gcc|llvm_gcc|clang)
3092             add_cppflags --sysroot="$sysroot"
3093             add_ldflags --sysroot="$sysroot"
3094         ;;
3095         tms470)
3096             add_cppflags -I"$sysinclude"
3097             add_ldflags  --sysroot="$sysroot"
3098         ;;
3099     esac
3100 fi
3101
3102 if test "$cpu" = host; then
3103     enabled cross_compile &&
3104         die "--cpu=host makes no sense when cross-compiling."
3105
3106     case "$cc_type" in
3107         gcc|llvm_gcc)
3108             check_native(){
3109                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3110                 sed -n "/cc1.*$1=/{
3111                             s/.*$1=\\([^ ]*\\).*/\\1/
3112                             p
3113                             q
3114                         }" $TMPE
3115             }
3116             cpu=$(check_native -march || check_native -mcpu)
3117         ;;
3118     esac
3119
3120     test "${cpu:-host}" = host &&
3121         die "--cpu=host not supported with compiler $cc"
3122 fi
3123
3124 # Deal with common $arch aliases
3125 case "$arch" in
3126     aarch64|arm64)
3127         arch="aarch64"
3128     ;;
3129     arm*|iPad*|iPhone*)
3130         arch="arm"
3131     ;;
3132     mips*|IP*)
3133         arch="mips"
3134     ;;
3135     parisc*|hppa*)
3136         arch="parisc"
3137     ;;
3138     "Power Macintosh"|ppc*|powerpc*)
3139         arch="ppc"
3140     ;;
3141     s390|s390x)
3142         arch="s390"
3143     ;;
3144     sh4|sh)
3145         arch="sh4"
3146     ;;
3147     sun4u|sparc*)
3148         arch="sparc"
3149     ;;
3150     tilegx|tile-gx)
3151         arch="tilegx"
3152     ;;
3153     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3154         arch="x86"
3155     ;;
3156 esac
3157
3158 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3159 enable $arch
3160
3161 # Add processor-specific flags
3162 if enabled aarch64; then
3163
3164     case $cpu in
3165         armv*)
3166             cpuflags="-march=$cpu"
3167         ;;
3168         *)
3169             cpuflags="-mcpu=$cpu"
3170         ;;
3171     esac
3172
3173 elif enabled alpha; then
3174
3175     cpuflags="-mcpu=$cpu"
3176
3177 elif enabled arm; then
3178
3179     check_arm_arch() {
3180         check_cpp_condition stddef.h \
3181             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3182             $cpuflags
3183     }
3184
3185     probe_arm_arch() {
3186         if   check_arm_arch 4;        then echo armv4;
3187         elif check_arm_arch 4T;       then echo armv4t;
3188         elif check_arm_arch 5;        then echo armv5;
3189         elif check_arm_arch 5E;       then echo armv5e;
3190         elif check_arm_arch 5T;       then echo armv5t;
3191         elif check_arm_arch 5TE;      then echo armv5te;
3192         elif check_arm_arch 5TEJ;     then echo armv5te;
3193         elif check_arm_arch 6;        then echo armv6;
3194         elif check_arm_arch 6J;       then echo armv6j;
3195         elif check_arm_arch 6K;       then echo armv6k;
3196         elif check_arm_arch 6Z;       then echo armv6z;
3197         elif check_arm_arch 6ZK;      then echo armv6zk;
3198         elif check_arm_arch 6T2;      then echo armv6t2;
3199         elif check_arm_arch 7;        then echo armv7;
3200         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3201         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3202         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3203         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3204         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3205         fi
3206     }
3207
3208     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3209
3210     case $cpu in
3211         armv*)
3212             cpuflags="-march=$cpu"
3213             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3214         ;;
3215         *)
3216             cpuflags="-mcpu=$cpu"
3217             case $cpu in
3218                 cortex-a*)                               subarch=armv7a  ;;
3219                 cortex-r*)                               subarch=armv7r  ;;
3220                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3221                 arm11*)                                  subarch=armv6   ;;
3222                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3223                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3224                 *)                             subarch=$(probe_arm_arch) ;;
3225             esac
3226         ;;
3227     esac
3228
3229     case "$subarch" in
3230         armv5t*)    enable fast_clz                ;;
3231         armv[6-8]*) enable fast_clz fast_unaligned ;;
3232     esac
3233
3234 elif enabled avr32; then
3235
3236     case $cpu in
3237         ap7[02]0[0-2])
3238             subarch="avr32_ap"
3239             cpuflags="-mpart=$cpu"
3240         ;;
3241         ap)
3242             subarch="avr32_ap"
3243             cpuflags="-march=$cpu"
3244         ;;
3245         uc3[ab]*)
3246             subarch="avr32_uc"
3247             cpuflags="-mcpu=$cpu"
3248         ;;
3249         uc)
3250             subarch="avr32_uc"
3251             cpuflags="-march=$cpu"
3252         ;;
3253     esac
3254
3255 elif enabled bfin; then
3256
3257     cpuflags="-mcpu=$cpu"
3258
3259 elif enabled mips; then
3260
3261     cpuflags="-march=$cpu"
3262
3263     case $cpu in
3264         24kc)
3265             disable mipsfpu
3266             disable mipsdspr1
3267             disable mipsdspr2
3268         ;;
3269         24kf*)
3270             disable mipsdspr1
3271             disable mipsdspr2
3272         ;;
3273         24kec|34kc|1004kc)
3274             disable mipsfpu
3275             disable mipsdspr2
3276         ;;
3277         24kef*|34kf*|1004kf*)
3278             disable mipsdspr2
3279         ;;
3280         74kc)
3281             disable mipsfpu
3282         ;;
3283     esac
3284
3285 elif enabled ppc; then
3286
3287     case $(tolower $cpu) in
3288         601|ppc601|powerpc601)
3289             cpuflags="-mcpu=601"
3290             disable altivec
3291         ;;
3292         603*|ppc603*|powerpc603*)
3293             cpuflags="-mcpu=603"
3294             disable altivec
3295         ;;
3296         604*|ppc604*|powerpc604*)
3297             cpuflags="-mcpu=604"
3298             disable altivec
3299         ;;
3300         g3|75*|ppc75*|powerpc75*)
3301             cpuflags="-mcpu=750"
3302             disable altivec
3303         ;;
3304         g4|745*|ppc745*|powerpc745*)
3305             cpuflags="-mcpu=7450"
3306         ;;
3307         74*|ppc74*|powerpc74*)
3308             cpuflags="-mcpu=7400"
3309         ;;
3310         g5|970|ppc970|powerpc970)
3311             cpuflags="-mcpu=970"
3312         ;;
3313         power[3-7]*)
3314             cpuflags="-mcpu=$cpu"
3315         ;;
3316         cell)
3317             cpuflags="-mcpu=cell"
3318             enable ldbrx
3319         ;;
3320         e500mc)
3321             cpuflags="-mcpu=e500mc"
3322             disable altivec
3323         ;;
3324         e500v2)
3325             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3326             disable altivec
3327         ;;
3328         e500)
3329             cpuflags="-mcpu=8540 -mhard-float"
3330             disable altivec
3331         ;;
3332     esac
3333
3334 elif enabled sparc; then
3335
3336     case $cpu in
3337         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3338             cpuflags="-mcpu=$cpu"
3339             disable vis
3340         ;;
3341         ultrasparc*|niagara[234])
3342             cpuflags="-mcpu=$cpu"
3343         ;;
3344     esac
3345
3346 elif enabled x86; then
3347
3348     case $cpu in
3349         i[345]86|pentium)
3350             cpuflags="-march=$cpu"
3351             disable mmx
3352         ;;
3353         # targets that do NOT support nopl and conditional mov (cmov)
3354         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3355             cpuflags="-march=$cpu"
3356             disable i686
3357         ;;
3358         # targets that do support nopl and conditional mov (cmov)
3359         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3360             cpuflags="-march=$cpu"
3361             enable i686
3362             enable fast_cmov
3363         ;;
3364         # targets that do support conditional mov but on which it's slow
3365         pentium4|pentium4m|prescott|nocona)
3366             cpuflags="-march=$cpu"
3367             enable i686
3368             disable fast_cmov
3369         ;;
3370     esac
3371
3372 fi
3373
3374 if [ "$cpu" != generic ]; then
3375     add_cflags  $cpuflags
3376     add_asflags $cpuflags
3377 fi
3378
3379 # compiler sanity check
3380 check_exec <<EOF
3381 int main(void){ return 0; }
3382 EOF
3383 if test "$?" != 0; then
3384     echo "$cc is unable to create an executable file."
3385     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3386         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3387         echo "Only do this if you know what cross compiling means."
3388     fi
3389     die "C compiler test failed."
3390 fi
3391
3392 add_cppflags -D_ISOC99_SOURCE
3393 add_cxxflags -D__STDC_CONSTANT_MACROS
3394 check_cflags -std=c99
3395 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3396 #include <stdlib.h>
3397 EOF
3398 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3399 #include <stdlib.h>
3400 EOF
3401
3402 check_host_cflags -std=c99
3403 check_host_cflags -Wall
3404
3405 check_64bit(){
3406     arch32=$1
3407     arch64=$2
3408     expr=$3
3409     check_code cc "" "int test[2*($expr) - 1]" &&
3410         subarch=$arch64 || subarch=$arch32
3411 }
3412
3413 case "$arch" in
3414     aarch64|alpha|ia64)
3415         spic=$shared
3416     ;;
3417     mips)
3418         check_64bit mips mips64 '_MIPS_SIM > 1'
3419         spic=$shared
3420     ;;
3421     parisc)
3422         check_64bit parisc parisc64 'sizeof(void *) > 4'
3423         spic=$shared
3424     ;;
3425     ppc)
3426         check_64bit ppc ppc64 'sizeof(void *) > 4'
3427         spic=$shared
3428     ;;
3429     sparc)
3430         check_64bit sparc sparc64 'sizeof(void *) > 4'
3431         spic=$shared
3432     ;;
3433     x86)
3434         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3435         if test "$subarch" = "x86_64"; then
3436             spic=$shared
3437         fi
3438     ;;
3439     ppc)
3440         check_cc <<EOF && subarch="ppc64"
3441         int test[(int)sizeof(char*) - 7];
3442 EOF
3443     ;;
3444 esac
3445
3446 enable $subarch
3447 enabled spic && enable_weak pic
3448
3449 # OS specific
3450 case $target_os in
3451     aix)
3452         SHFLAGS=-shared
3453         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3454         enabled shared && add_ldflags -Wl,-brtl
3455         ;;
3456     haiku)
3457         prefix_default="/boot/common"
3458         network_extralibs="-lnetwork"
3459         host_libs=
3460         ;;
3461     sunos)
3462         SHFLAGS='-shared -Wl,-h,$$(@F)'
3463         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3464         network_extralibs="-lsocket -lnsl"
3465         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3466         # When using suncc to build, the Solaris linker will mark
3467         # an executable with each instruction set encountered by
3468         # the Solaris assembler.  As our libraries contain their own
3469         # guards for processor-specific code, instead suppress
3470         # generation of the HWCAPS ELF section on Solaris x86 only.
3471         enabled_all suncc x86 &&
3472             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3473             add_ldflags -Wl,-M,mapfile
3474         nm_default='nm -P -g'
3475         ;;
3476     netbsd)
3477         disable symver
3478         oss_indev_extralibs="-lossaudio"
3479         oss_outdev_extralibs="-lossaudio"
3480         enabled gcc || check_ldflags -Wl,-zmuldefs
3481         ;;
3482     openbsd|bitrig)
3483         disable symver
3484         SHFLAGS='-shared'
3485         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3486         SLIB_INSTALL_LINKS=
3487         oss_indev_extralibs="-lossaudio"
3488         oss_outdev_extralibs="-lossaudio"
3489         ;;
3490     dragonfly)
3491         disable symver
3492         ;;
3493     freebsd)
3494         ;;
3495     bsd/os)
3496         add_extralibs -lpoll -lgnugetopt
3497         strip="strip -d"
3498         ;;
3499     darwin)
3500         gas="gas-preprocessor.pl $cc"
3501         enabled ppc && add_asflags -force_cpusubtype_ALL
3502         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3503         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3504         strip="${strip} -x"
3505         add_ldflags -Wl,-dynamic,-search_paths_first
3506         SLIBSUF=".dylib"
3507         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3508         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3509         objformat="macho"
3510         enabled x86_64 && objformat="macho64"
3511         enabled_any pic shared ||
3512             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3513         ;;
3514     mingw32*)
3515         if test $target_os = "mingw32ce"; then
3516             disable network
3517         else
3518             target_os=mingw32
3519         fi
3520         LIBTARGET=i386
3521         if enabled x86_64; then
3522             LIBTARGET="i386:x86-64"
3523         elif enabled arm; then
3524             LIBTARGET=arm-wince
3525         fi
3526         check_ldflags -Wl,--nxcompat
3527         check_ldflags -Wl,--dynamicbase
3528         shlibdir_default="$bindir_default"
3529         SLIBPREF=""
3530         SLIBSUF=".dll"
3531         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3532         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3533         dlltool="${cross_prefix}dlltool"
3534         if check_cmd lib.exe -list; then
3535             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3536             if enabled x86_64; then
3537                 LIBTARGET=x64
3538             fi
3539         elif check_cmd $dlltool --version; then
3540             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3541         fi
3542         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3543         SLIB_INSTALL_LINKS=
3544         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3545         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3546         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3547         objformat="win32"
3548         ranlib=:
3549         enable dos_paths
3550         ;;
3551     win32|win64)
3552         if enabled shared; then
3553             # Link to the import library instead of the normal static library
3554             # for shared libs.
3555             LD_LIB='%.lib'
3556             # Cannot build both shared and static libs with MSVC or icl.
3557             disable static
3558         fi
3559         shlibdir_default="$bindir_default"
3560         SLIBPREF=""
3561         SLIBSUF=".dll"
3562         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3563         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3564         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3565         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3566         SLIB_INSTALL_LINKS=
3567         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3568         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3569         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3570         objformat="win32"
3571         ranlib=:
3572         enable dos_paths
3573         ;;
3574     cygwin*)
3575         target_os=cygwin
3576         shlibdir_default="$bindir_default"
3577         SLIBPREF="cyg"
3578         SLIBSUF=".dll"
3579         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3580         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3581         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3582         SLIB_INSTALL_LINKS=
3583         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3584         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3585         objformat="win32"
3586         enable dos_paths
3587         ;;
3588     *-dos|freedos|opendos)
3589         network_extralibs="-lsocket"
3590         objformat="coff"
3591         enable dos_paths
3592         add_cppflags -U__STRICT_ANSI__
3593         ;;
3594     linux)
3595         enable dv1394
3596         ;;
3597     irix*)
3598         target_os=irix
3599         ranlib="echo ignoring ranlib"
3600         ;;
3601     os/2*)
3602         strip="lxlite -CS"
3603         ln_s="cp -f"
3604         objformat="aout"
3605         add_cppflags -D_GNU_SOURCE
3606         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3607         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3608         LIBSUF="_s.a"
3609         SLIBPREF=""
3610         SLIBSUF=".dll"
3611         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3612         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3613         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3614             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3615             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3616             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3617             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3618             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3619         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3620             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3621         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3622         enable dos_paths
3623         enable_weak os2threads
3624         ;;
3625     gnu/kfreebsd)
3626         add_cppflags -D_BSD_SOURCE
3627         ;;
3628     gnu)
3629         ;;
3630     qnx)
3631         add_cppflags -D_QNX_SOURCE
3632         network_extralibs="-lsocket"
3633         ;;
3634     symbian)
3635         SLIBSUF=".dll"
3636         enable dos_paths
3637         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3638         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3639         add_ldflags -Wl,--target1-abs,--no-undefined \
3640                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3641                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3642         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3643                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3644                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3645         ;;
3646     osf1)
3647         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3648         ;;
3649     minix)
3650         ;;
3651     plan9)
3652         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3653                      -D_REENTRANT_SOURCE        \
3654                      -D_RESEARCH_SOURCE         \
3655                      -DFD_SETSIZE=96            \
3656                      -DHAVE_SOCK_OPTS
3657         add_compat strtod.o strtod=avpriv_strtod
3658         network_extralibs='-lbsd'
3659         exeobjs=compat/plan9/main.o
3660         disable ffserver
3661         cp_f='cp'
3662         ;;
3663     none)
3664         ;;
3665     *)
3666         die "Unknown OS '$target_os'."
3667         ;;
3668 esac
3669
3670 # determine libc flavour
3671
3672 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3673 if check_cpp_condition features.h "defined __UCLIBC__"; then
3674     libc_type=uclibc
3675     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3676 elif check_cpp_condition features.h "defined __GLIBC__"; then
3677     libc_type=glibc
3678     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3679 # MinGW headers can be installed on Cygwin, so check for newlib first.
3680 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3681     libc_type=newlib
3682     add_cppflags -U__STRICT_ANSI__
3683 elif check_header _mingw.h; then
3684     libc_type=mingw
3685     check_cpp_condition _mingw.h \
3686         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3687             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3688         die "ERROR: MinGW runtime version must be >= 3.15."
3689     add_cppflags -U__STRICT_ANSI__
3690     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3691             __MINGW64_VERSION_MAJOR < 3"; then
3692         add_compat msvcrt/snprintf.o
3693         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3694     else
3695         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3696     fi
3697 elif check_func_headers stdlib.h _get_doserrno; then
3698     libc_type=msvcrt
3699     add_compat strtod.o strtod=avpriv_strtod
3700     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3701                                  _snprintf=avpriv_snprintf  \
3702                                  vsnprintf=avpriv_vsnprintf
3703     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3704     # 0x601 by default unless something else is set by the user.
3705     # This can easily lead to us detecting functions only present
3706     # in such new versions and producing binaries requiring windows 7.0.
3707     # Therefore explicitly set the default to XP unless the user has
3708     # set something else on the command line.
3709     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3710 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3711     libc_type=klibc
3712 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3713     libc_type=bionic
3714     add_compat strtod.o strtod=avpriv_strtod
3715 fi
3716
3717 test -n "$libc_type" && enable $libc_type
3718
3719 # hacks for compiler/libc/os combinations
3720
3721 if enabled_all tms470 glibc; then
3722     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3723     add_cppflags -D__USER_LABEL_PREFIX__=
3724     add_cppflags -D__builtin_memset=memset
3725     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3726     add_cflags   -pds=48    # incompatible redefinition of macro
3727 fi
3728
3729 if enabled_all ccc glibc; then
3730     add_ldflags -Wl,-z,now  # calls to libots crash without this
3731 fi
3732
3733 esc(){
3734     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3735 }
3736
3737 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3738
3739 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3740
3741 set_default $PATHS_LIST
3742 set_default nm
3743
3744 # we need to build at least one lib type
3745 if ! enabled_any static shared; then
3746     cat <<EOF
3747 At least one library type must be built.
3748 Specify --enable-static to build the static libraries or --enable-shared to
3749 build the shared libraries as well. To only build the shared libraries specify
3750 --disable-static in addition to --enable-shared.
3751 EOF
3752     exit 1;
3753 fi
3754
3755 # backward compatibility layer for incompatible_libav/fork_abi
3756 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3757 enabled incompatible_libav_abi && enable incompatible_fork_abi
3758
3759 die_license_disabled() {
3760     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3761 }
3762
3763 die_license_disabled_gpl() {
3764     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3765 }
3766
3767 die_license_disabled gpl frei0r
3768 die_license_disabled gpl libcdio
3769 die_license_disabled gpl libutvideo
3770 die_license_disabled gpl libvidstab
3771 die_license_disabled gpl libx264
3772 die_license_disabled gpl libxavs
3773 die_license_disabled gpl libxvid
3774 die_license_disabled gpl libzvbi
3775 die_license_disabled gpl x11grab
3776
3777 die_license_disabled nonfree libaacplus
3778 die_license_disabled nonfree libfaac
3779 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3780 enabled gpl && die_license_disabled_gpl nonfree openssl
3781
3782 die_license_disabled version3 libopencore_amrnb
3783 die_license_disabled version3 libopencore_amrwb
3784 die_license_disabled version3 libvo_aacenc
3785 die_license_disabled version3 libvo_amrwbenc
3786
3787 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3788
3789 disabled optimizations || check_cflags -fomit-frame-pointer
3790
3791 enable_weak_pic() {
3792     disabled pic && return
3793     enable pic
3794     add_cppflags -DPIC
3795     case "$target_os" in
3796     mingw*|cygwin*)
3797         ;;
3798     *)
3799         add_cflags -fPIC
3800         ;;
3801     esac
3802     add_asflags  -fPIC
3803 }
3804
3805 enabled pic && enable_weak_pic
3806
3807 check_cc <<EOF || die "Symbol mangling check failed."
3808 int ff_extern;
3809 EOF
3810 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3811 extern_prefix=${sym%%ff_extern*}
3812
3813 check_cc <<EOF && enable_weak inline_asm
3814 void foo(void) { __asm__ volatile ("" ::); }
3815 EOF
3816
3817 _restrict=
3818 for restrict_keyword in restrict __restrict__ __restrict; do
3819     check_cc <<EOF && _restrict=$restrict_keyword && break
3820 void foo(char * $restrict_keyword p);
3821 EOF
3822 done
3823
3824 check_cc <<EOF && enable pragma_deprecated
3825 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3826 EOF
3827
3828 check_cc <<EOF && enable attribute_packed
3829 struct { int x; } __attribute__((packed)) x;
3830 EOF
3831
3832 check_cc <<EOF && enable attribute_may_alias
3833 union { int x; } __attribute__((may_alias)) x;
3834 EOF
3835
3836 check_cc <<EOF || die "endian test failed"
3837 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3838 EOF
3839 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3840
3841 check_inline_asm inline_asm_labels '"1:\n"'
3842
3843 if enabled alpha; then
3844
3845     check_cflags -mieee
3846
3847 elif enabled arm; then
3848
3849     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3850 float func(float a, float b){ return a+b; }
3851 EOF
3852
3853     enabled thumb && check_cflags -mthumb || check_cflags -marm
3854     nogas=die
3855
3856     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3857         enable vfp_args
3858     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3859         case "${cross_prefix:-$cc}" in
3860             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3861             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3862 __asm__ (".eabi_attribute 28, 1");
3863 int main(void) { return 0; }
3864 EOF
3865         esac
3866         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3867     fi
3868
3869     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3870     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3871     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3872     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3873     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3874     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3875
3876     [ $target_os = linux ] ||
3877         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3878             $ARCH_EXT_LIST_ARM
3879
3880     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3881     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3882
3883     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3884
3885 elif enabled mips; then
3886
3887     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3888     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3889      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3890     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3891      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3892     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3893      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3894     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3895      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3896
3897 elif enabled parisc; then
3898
3899     if enabled gcc; then
3900         case $($cc -dumpversion) in
3901             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3902         esac
3903     fi
3904
3905 elif enabled ppc; then
3906
3907     enable local_aligned_8 local_aligned_16
3908
3909     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3910     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3911     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3912     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3913
3914     # AltiVec flags: The FSF version of GCC differs from the Apple version
3915     if enabled altivec; then
3916         if ! enabled_any pic ppc64; then
3917             nogas=warn
3918         fi
3919         check_cflags -maltivec -mabi=altivec &&
3920         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3921         check_cflags -faltivec
3922
3923         # check if our compiler supports Motorola AltiVec C API
3924         check_cc <<EOF || disable altivec
3925 $inc_altivec_h
3926 int main(void) {
3927     vector signed int v1 = (vector signed int) { 0 };
3928     vector signed int v2 = (vector signed int) { 1 };
3929     v1 = vec_add(v1, v2);
3930     return 0;
3931 }
3932 EOF
3933
3934         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3935     fi
3936
3937 elif enabled sparc; then
3938
3939     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3940
3941 elif enabled x86; then
3942
3943     check_builtin rdtsc    intrin.h   "__rdtsc()"
3944     check_builtin mm_empty mmintrin.h "_mm_empty()"
3945
3946     enable local_aligned_8 local_aligned_16
3947
3948     # check whether EBP is available on x86
3949     # As 'i' is stored on the stack, this program will crash
3950     # if the base pointer is used to access it because the
3951     # base pointer is cleared in the inline assembly code.
3952     check_exec_crash <<EOF && enable ebp_available
3953 volatile int i=0;
3954 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3955 return i;
3956 EOF
3957
3958     # check whether EBX is available on x86
3959     check_inline_asm ebx_available '""::"b"(0)' &&
3960         check_inline_asm ebx_available '"":::"%ebx"'
3961
3962     # check whether xmm clobbers are supported
3963     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3964
3965     # check whether binutils is new enough to compile SSSE3/MMXEXT
3966     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3967     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3968
3969     if ! disabled_any asm mmx yasm; then
3970         if check_cmd $yasmexe --version; then
3971             enabled x86_64 && yasm_extra="-m amd64"
3972             yasm_debug="-g dwarf2"
3973         elif check_cmd nasm -v; then
3974             yasmexe=nasm
3975             yasm_debug="-g -F dwarf"
3976             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3977         fi
3978
3979         YASMFLAGS="-f $objformat $yasm_extra"
3980         enabled pic               && append YASMFLAGS "-DPIC"
3981         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3982         case "$objformat" in
3983             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3984         esac
3985
3986         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3987             die "yasm not found, use --disable-yasm for a crippled build"
3988         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
3989         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3990         check_yasm "CPU amdnop" && enable cpunop
3991     fi
3992
3993     case "$cpu" in
3994         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3995             disable fast_clz
3996         ;;
3997     esac
3998
3999 fi
4000
4001 if enabled asm; then
4002     as=${gas:=$as}
4003     check_as <<EOF && enable gnu_as || \
4004         $nogas "GNU assembler not found, install gas-preprocessor"
4005 .macro m n
4006 \n: .int 0
4007 .endm
4008 m x
4009 EOF
4010 fi
4011
4012 check_ldflags -Wl,--as-needed
4013
4014 if check_func dlopen; then
4015     ldl=
4016 elif check_func dlopen -ldl; then
4017     ldl=-ldl
4018 fi
4019
4020 if ! disabled network; then
4021     check_type "sys/types.h sys/socket.h" socklen_t
4022     check_type netdb.h "struct addrinfo"
4023     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4024     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4025     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4026     check_type netinet/in.h "struct sockaddr_in6"
4027     check_type poll.h "struct pollfd"
4028     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4029     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4030     check_type netinet/sctp.h "struct sctp_event_subscribe"
4031     check_func getaddrinfo $network_extralibs
4032     check_func getservbyport $network_extralibs
4033     # Prefer arpa/inet.h over winsock2
4034     if check_header arpa/inet.h ; then
4035         check_func closesocket
4036     elif check_header winsock2.h ; then
4037         check_func_headers winsock2.h closesocket -lws2 &&
4038             network_extralibs="-lws2" ||
4039         { check_func_headers winsock2.h closesocket -lws2_32 &&
4040             network_extralibs="-lws2_32"; }
4041         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4042         check_type ws2tcpip.h socklen_t
4043         check_type ws2tcpip.h "struct addrinfo"
4044         check_type ws2tcpip.h "struct group_source_req"
4045         check_type ws2tcpip.h "struct ip_mreq_source"
4046         check_type ws2tcpip.h "struct ipv6_mreq"
4047         check_type winsock2.h "struct pollfd"
4048         check_type ws2tcpip.h "struct sockaddr_in6"
4049         check_type ws2tcpip.h "struct sockaddr_storage"
4050         check_struct winsock2.h "struct sockaddr" sa_len
4051     else
4052         disable network
4053     fi
4054 fi
4055
4056 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4057 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4058
4059 check_func  access
4060 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4061 check_func  fcntl
4062 check_func  fork
4063 check_func_headers stdlib.h getenv
4064 check_func  gethrtime
4065 check_func  getopt
4066 check_func  getrusage
4067 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4068 check_func  gettimeofday
4069 check_func  inet_aton $network_extralibs
4070 check_func  isatty
4071 check_func  localtime_r
4072 check_func  ${malloc_prefix}memalign            && enable memalign
4073 check_func  mkstemp
4074 check_func  mmap
4075 check_func  mprotect
4076 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4077 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4078 check_func  setrlimit
4079 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4080 check_func  strerror_r
4081 check_func  sched_getaffinity
4082 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4083 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4084 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4085 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4086 check_builtin sarestart signal.h "SA_RESTART"
4087 check_func  sysconf
4088 check_func  sysctl
4089 check_func  usleep
4090 check_func_headers conio.h kbhit
4091 check_func_headers windows.h PeekNamedPipe
4092 check_func_headers io.h setmode
4093 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4094 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4095 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4096 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4097 check_func_headers windows.h GetProcessAffinityMask
4098 check_func_headers windows.h GetProcessTimes
4099 check_func_headers windows.h GetSystemTimeAsFileTime
4100 check_func_headers windows.h MapViewOfFile
4101 check_func_headers windows.h SetConsoleTextAttribute
4102 check_func_headers windows.h Sleep
4103 check_func_headers windows.h VirtualAlloc
4104 check_func_headers glob.h glob
4105 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4106
4107 check_header cl/cl.h
4108 check_header direct.h
4109 check_header dlfcn.h
4110 check_header dxva.h
4111 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4112 check_header io.h
4113 check_header libcrystalhd/libcrystalhd_if.h
4114 check_header malloc.h
4115 check_header poll.h
4116 check_header sys/mman.h
4117 check_header sys/param.h
4118 check_header sys/resource.h
4119 check_header sys/select.h
4120 check_header sys/time.h
4121 check_header sys/un.h
4122 check_header termios.h
4123 check_header unistd.h
4124 check_header vdpau/vdpau.h
4125 check_header vdpau/vdpau_x11.h
4126 check_header VideoDecodeAcceleration/VDADecoder.h
4127 check_header windows.h
4128 check_header X11/extensions/XvMClib.h
4129 check_header asm/types.h
4130
4131 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4132 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4133
4134 if ! disabled w32threads && ! enabled pthreads; then
4135     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4136 fi
4137
4138 # check for some common methods of building with pthread support
4139 # do this before the optional library checks as some of them require pthreads
4140 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4141     enable pthreads
4142     if check_func pthread_create; then
4143         :
4144     elif check_func pthread_create -pthread; then
4145         add_cflags -pthread
4146         add_extralibs -pthread
4147     elif check_func pthread_create -pthreads; then
4148         add_cflags -pthreads
4149         add_extralibs -pthreads
4150     elif check_func pthread_create -lpthreadGC2; then
4151         add_extralibs -lpthreadGC2
4152     elif ! check_lib pthread.h pthread_create -lpthread; then
4153         disable pthreads
4154     fi
4155 fi
4156
4157 for thread in $THREADS_LIST; do
4158     if enabled $thread; then
4159         test -n "$thread_type" &&
4160             die "ERROR: Only one thread type must be selected." ||
4161             thread_type="$thread"
4162     fi
4163 done
4164
4165 if enabled pthreads; then
4166   check_func pthread_cancel
4167 fi
4168
4169 enabled sync_val_compare_and_swap && enable atomics_gcc
4170 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4171 enabled MemoryBarrier && enable atomics_win32
4172
4173 check_lib math.h sin -lm && LIBM="-lm"
4174 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4175
4176 atan2f_args=2
4177 ldexpf_args=2
4178 powf_args=2
4179
4180 for func in $MATH_FUNCS; do
4181     eval check_mathfunc $func \${${func}_args:-1}
4182 done
4183
4184 # these are off by default, so fail if requested and not available
4185 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4186                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4187                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4188 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4189 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4190 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4191 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4192 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4193 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4194 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4195 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4196                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4197                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4198 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4199 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4200 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4201 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"
4202 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4203 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4204 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4205 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4206                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4207                                done || die "ERROR: libgsm not found"; }
4208 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4209 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4210 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4211 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4212 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4213 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4214 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4215 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4216                                check_lib openjpeg.h opj_version -lopenjpeg ||
4217                                die "ERROR: libopenjpeg not found"; }
4218 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4219 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4220 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4221 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4222 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4223 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4224 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4225 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4226 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4227     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4228     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4229 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4230 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4231                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4232                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4233 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4234 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4235 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4236 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4237 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4238 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4239 enabled libvpx            && {
4240     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4241                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4242     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4243                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4244     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4245     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4246 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4247 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4248                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4249                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4250 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4251 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4252 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4253 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4254 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4255                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4256                                die "ERROR: openal not found"; } &&
4257                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4258                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4259 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4260                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4261                                die "ERROR: opencl not found"; } &&
4262                              { enabled_any w32threads os2threads &&
4263                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4264                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4265                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4266                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4267 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4268                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4269                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4270                                die "ERROR: openssl not found"; }
4271
4272 if enabled gnutls; then
4273     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4274     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4275 fi
4276
4277 # libdc1394 check
4278 if enabled libdc1394; then
4279     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4280         enable libdc1394_2; } ||
4281     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4282         enable libdc1394_1; } ||
4283     die "ERROR: No version of libdc1394 found "
4284 fi
4285
4286 SDL_CONFIG="${cross_prefix}sdl-config"
4287 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4288     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4289     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4290     enable sdl
4291 else
4292   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4293     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4294     sdl_libs=$("${SDL_CONFIG}" --libs)
4295     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4296     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4297     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4298     enable sdl
4299   fi
4300 fi
4301 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4302
4303 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4304 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4305 perl --version > /dev/null 2>&1 && enable perl || disable perl
4306 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4307 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4308
4309 check_header linux/fb.h
4310 check_header linux/videodev.h
4311 check_header linux/videodev2.h
4312 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4313
4314 check_header sys/videoio.h
4315
4316 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4317 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4318 # w32api 3.12 had it defined wrong
4319 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4320
4321 check_type "dshow.h" IBaseFilter
4322
4323 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4324 { check_header dev/bktr/ioctl_meteor.h &&
4325   check_header dev/bktr/ioctl_bt848.h; } ||
4326 { check_header machine/ioctl_meteor.h &&
4327   check_header machine/ioctl_bt848.h; } ||
4328 { check_header dev/video/meteor/ioctl_meteor.h &&
4329   check_header dev/video/bktr/ioctl_bt848.h; } ||
4330 check_header dev/ic/bt8xx.h
4331
4332 check_header sndio.h
4333 if check_struct sys/soundcard.h audio_buf_info bytes; then
4334     enable_safe sys/soundcard.h
4335 else
4336     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4337     #include <sys/soundcard.h>
4338     audio_buf_info abc;
4339 EOF
4340 fi
4341 check_header soundcard.h
4342
4343 enabled_any alsa_indev alsa_outdev &&
4344     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4345
4346 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4347     check_func jack_port_get_latency_range -ljack
4348
4349 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4350
4351 if enabled libcdio; then
4352     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4353     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4354     die "ERROR: libcdio-paranoia not found"
4355 fi
4356
4357 enabled x11grab                                           &&
4358 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4359 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4360 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4361
4362 enabled vaapi &&
4363     check_lib va/va.h vaInitialize -lva ||
4364     disable vaapi
4365
4366 enabled vdpau &&
4367     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4368     disable vdpau
4369
4370 # Funny iconv installations are not unusual, so check it after all flags have been set
4371 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4372
4373 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4374
4375 # add some useful compiler flags if supported
4376 check_cflags -Wdeclaration-after-statement
4377 check_cflags -Wall
4378 check_cflags -Wno-parentheses
4379 check_cflags -Wno-switch
4380 check_cflags -Wno-format-zero-length
4381 check_cflags -Wdisabled-optimization
4382 check_cflags -Wpointer-arith
4383 check_cflags -Wredundant-decls
4384 check_cflags -Wno-pointer-sign
4385 check_cflags -Wwrite-strings
4386 check_cflags -Wtype-limits
4387 check_cflags -Wundef
4388 check_cflags -Wmissing-prototypes
4389 check_cflags -Wno-pointer-to-int-cast
4390 check_cflags -Wstrict-prototypes
4391 enabled extra_warnings && check_cflags -Winline
4392
4393 # add some linker flags
4394 check_ldflags -Wl,--warn-common
4395 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4396 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4397
4398 enabled xmm_clobber_test &&
4399     check_ldflags -Wl,--wrap,avcodec_open2              \
4400                   -Wl,--wrap,avcodec_decode_audio4      \
4401                   -Wl,--wrap,avcodec_decode_video2      \
4402                   -Wl,--wrap,avcodec_decode_subtitle2   \
4403                   -Wl,--wrap,avcodec_encode_audio2      \
4404                   -Wl,--wrap,avcodec_encode_video2      \
4405                   -Wl,--wrap,avcodec_encode_subtitle    \
4406                   -Wl,--wrap,sws_scale ||
4407     disable xmm_clobber_test
4408
4409 echo "X{};" > $TMPV
4410 if test_ldflags -Wl,--version-script,$TMPV; then
4411     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4412     check_cc <<EOF && enable symver_asm_label
4413 void ff_foo(void) __asm__ ("av_foo@VERSION");
4414 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4415 EOF
4416     check_cc <<EOF && enable symver_gnu_asm
4417 __asm__(".symver ff_foo,av_foo@VERSION");
4418 void ff_foo(void) {}
4419 EOF
4420 fi
4421
4422 if [ -z "$optflags" ]; then
4423     if enabled small; then
4424         optflags=$cflags_size
4425     elif enabled optimizations; then
4426         optflags=$cflags_speed
4427     else
4428         optflags=$cflags_noopt
4429     fi
4430 fi
4431
4432 check_optflags(){
4433     check_cflags "$@"
4434     enabled lto && check_ldflags "$@"
4435 }
4436
4437
4438 if enabled lto; then
4439     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4440     check_cflags  -flto
4441     check_ldflags -flto $cpuflags
4442 fi
4443
4444 check_optflags $optflags
4445 check_optflags -fno-math-errno
4446 check_optflags -fno-signed-zeros
4447
4448 enabled ftrapv && check_cflags -ftrapv
4449
4450 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4451 int x;
4452 EOF
4453
4454
4455 if enabled icc; then
4456     # Just warnings, no remarks
4457     check_cflags -w1
4458     # -wd: Disable following warnings
4459     # 144, 167, 556: -Wno-pointer-sign
4460     # 188: enumerated type mixed with another type
4461     # 1292: attribute "foo" ignored
4462     # 1419: external declaration in primary source file
4463     # 10006: ignoring unknown option -fno-signed-zeros
4464     # 10148: ignoring unknown option -Wno-parentheses
4465     # 10156: ignoring option '-W'; no argument required
4466     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4467     # 11030: Warning unknown option --as-needed
4468     # 10156: ignoring option '-export'; no argument required
4469     check_ldflags -wd10156,11030
4470     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4471     enable ebp_available
4472     if enabled x86_32; then
4473         icc_version=$($cc -dumpversion)
4474         test ${icc_version%%.*} -ge 11 &&
4475             check_cflags -falign-stack=maintain-16-byte ||
4476             disable aligned_stack
4477     fi
4478 elif enabled ccc; then
4479     # disable some annoying warnings
4480     add_cflags -msg_disable bitnotint
4481     add_cflags -msg_disable mixfuncvoid
4482     add_cflags -msg_disable nonstandcast
4483     add_cflags -msg_disable unsupieee
4484 elif enabled gcc; then
4485     check_optflags -fno-tree-vectorize
4486     check_cflags -Werror=implicit-function-declaration
4487     check_cflags -Werror=missing-prototypes
4488     check_cflags -Werror=return-type
4489     check_cflags -Werror=vla
4490 elif enabled llvm_gcc; then
4491     check_cflags -mllvm -stack-alignment=16
4492 elif enabled clang; then
4493     check_cflags -mllvm -stack-alignment=16
4494     check_cflags -Qunused-arguments
4495     check_cflags -Werror=implicit-function-declaration
4496     check_cflags -Werror=missing-prototypes
4497     check_cflags -Werror=return-type
4498 elif enabled armcc; then
4499     # 2523: use of inline assembler is deprecated
4500     add_cflags -W${armcc_opt},--diag_suppress=2523
4501     add_cflags -W${armcc_opt},--diag_suppress=1207
4502     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4503     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4504     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4505     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4506 elif enabled tms470; then
4507     add_cflags -pds=824 -pds=837
4508 elif enabled pathscale; then
4509     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4510 elif enabled_any msvc icl; then
4511     enabled x86_32 && disable aligned_stack
4512     enabled_all x86_32 debug && add_cflags -Oy-
4513     enabled debug && add_ldflags -debug
4514     if enabled icl; then
4515         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
4516         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
4517         # icl will pass the inline asm tests but inline asm is currently
4518         # not supported (build will fail)
4519         disable inline_asm
4520     fi
4521 fi
4522
4523 case $target_os in
4524     osf1)
4525         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4526     ;;
4527     plan9)
4528         add_cppflags -Dmain=plan9_main
4529     ;;
4530 esac
4531
4532 enable frame_thread_encoder
4533 enabled_any $THREADS_LIST      && enable threads
4534 enabled_any $ATOMICS_LIST      && enable atomics_native
4535
4536 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4537
4538 check_deps $CONFIG_LIST       \
4539            $CONFIG_EXTRA      \
4540            $HAVE_LIST         \
4541            $ALL_COMPONENTS    \
4542
4543
4544 if test $target_os = "haiku"; then
4545     disable memalign
4546     disable posix_memalign
4547 fi
4548
4549 ! enabled_any memalign posix_memalign aligned_malloc &&
4550     enabled_any $need_memalign && enable memalign_hack
4551
4552 # add_dep lib dep
4553 # -> enable ${lib}_deps_${dep}
4554 # -> add $dep to ${lib}_deps only once
4555 add_dep() {
4556     lib=$1
4557     dep=$2
4558     enabled "${lib}_deps_${dep}" && return 0
4559     enable  "${lib}_deps_${dep}"
4560     prepend "${lib}_deps" $dep
4561 }
4562
4563 # merge deps lib components
4564 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4565 merge_deps() {
4566     lib=$1
4567     shift
4568     for comp in $*; do
4569         enabled $comp || continue
4570         eval "dep=\"\$${comp}_deps\""
4571         for d in $dep; do
4572             add_dep $lib $d
4573         done
4574     done
4575 }
4576
4577 merge_deps libavfilter $FILTER_LIST
4578
4579 echo "install prefix            $prefix"
4580 echo "source path               $source_path"
4581 echo "C compiler                $cc"
4582 echo "ARCH                      $arch ($cpu)"
4583 if test "$build_suffix" != ""; then
4584     echo "build suffix              $build_suffix"
4585 fi
4586 if test "$progs_suffix" != ""; then
4587     echo "progs suffix              $progs_suffix"
4588 fi
4589 if test "$extra_version" != ""; then
4590     echo "version string suffix     $extra_version"
4591 fi
4592 echo "big-endian                ${bigendian-no}"
4593 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4594 if enabled x86; then
4595     echo "${yasmexe}                      ${yasm-no}"
4596     echo "MMX enabled               ${mmx-no}"
4597     echo "MMXEXT enabled            ${mmxext-no}"
4598     echo "3DNow! enabled            ${amd3dnow-no}"
4599     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4600     echo "SSE enabled               ${sse-no}"
4601     echo "SSSE3 enabled             ${ssse3-no}"
4602     echo "AVX enabled               ${avx-no}"
4603     echo "FMA4 enabled              ${fma4-no}"
4604     echo "i686 features enabled     ${i686-no}"
4605     echo "CMOV is fast              ${fast_cmov-no}"
4606     echo "EBX available             ${ebx_available-no}"
4607     echo "EBP available             ${ebp_available-no}"
4608 fi
4609 if enabled arm; then
4610     echo "ARMv5TE enabled           ${armv5te-no}"
4611     echo "ARMv6 enabled             ${armv6-no}"
4612     echo "ARMv6T2 enabled           ${armv6t2-no}"
4613     echo "VFP enabled               ${vfp-no}"
4614     echo "NEON enabled              ${neon-no}"
4615     echo "THUMB enabled             ${thumb-no}"
4616 fi
4617 if enabled mips; then
4618     echo "MIPS FPU enabled          ${mipsfpu-no}"
4619     echo "MIPS32R2 enabled          ${mips32r2-no}"
4620     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4621     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4622 fi
4623 if enabled ppc; then
4624     echo "AltiVec enabled           ${altivec-no}"
4625     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4626     echo "dcbzl available           ${dcbzl-no}"
4627 fi
4628 if enabled sparc; then
4629     echo "VIS enabled               ${vis-no}"
4630 fi
4631 echo "debug symbols             ${debug-no}"
4632 echo "strip symbols             ${stripping-no}"
4633 echo "optimize for size         ${small-no}"
4634 echo "optimizations             ${optimizations-no}"
4635 echo "static                    ${static-no}"
4636 echo "shared                    ${shared-no}"
4637 echo "postprocessing support    ${postproc-no}"
4638 echo "new filter support        ${avfilter-no}"
4639 echo "network support           ${network-no}"
4640 echo "threading support         ${thread_type-no}"
4641 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4642 echo "SDL support               ${sdl-no}"
4643 echo "opencl enabled            ${opencl-no}"
4644 echo "libzvbi enabled           ${libzvbi-no}"
4645 echo "texi2html enabled         ${texi2html-no}"
4646 echo "perl enabled              ${perl-no}"
4647 echo "pod2man enabled           ${pod2man-no}"
4648 echo "makeinfo enabled          ${makeinfo-no}"
4649 test -n "$random_seed" &&
4650     echo "random seed               ${random_seed}"
4651 echo
4652
4653 echo "External libraries:"
4654 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4655 echo
4656
4657 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4658     echo "Enabled ${type}s:"
4659     eval list=\$$(toupper $type)_LIST
4660     print_enabled '_*' $list | print_3_columns
4661     echo
4662 done
4663
4664 license="LGPL version 2.1 or later"
4665 if enabled nonfree; then
4666     license="nonfree and unredistributable"
4667 elif enabled gplv3; then
4668     license="GPL version 3 or later"
4669 elif enabled lgplv3; then
4670     license="LGPL version 3 or later"
4671 elif enabled gpl; then
4672     license="GPL version 2 or later"
4673 fi
4674
4675 echo "License: $license"
4676
4677 echo "Creating config.mak, config.h, and doc/config.texi..."
4678
4679 test -e Makefile || $ln_s "$source_path/Makefile" .
4680
4681 enabled stripping || strip="echo skipping strip"
4682
4683 config_files="$TMPH config.mak doc/config.texi"
4684
4685 cat > config.mak <<EOF
4686 # Automatically generated by configure - do not modify!
4687 ifndef FFMPEG_CONFIG_MAK
4688 FFMPEG_CONFIG_MAK=1
4689 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4690 prefix=$prefix
4691 LIBDIR=\$(DESTDIR)$libdir
4692 SHLIBDIR=\$(DESTDIR)$shlibdir
4693 INCDIR=\$(DESTDIR)$incdir
4694 BINDIR=\$(DESTDIR)$bindir
4695 DATADIR=\$(DESTDIR)$datadir
4696 DOCDIR=\$(DESTDIR)$docdir
4697 MANDIR=\$(DESTDIR)$mandir
4698 SRC_PATH=$source_path
4699 ifndef MAIN_MAKEFILE
4700 SRC_PATH:=\$(SRC_PATH:.%=..%)
4701 endif
4702 CC_IDENT=$cc_ident
4703 ARCH=$arch
4704 CC=$cc
4705 CXX=$cxx
4706 AS=$as
4707 LD=$ld
4708 DEPCC=$dep_cc
4709 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4710 DEPAS=$as
4711 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4712 YASM=$yasmexe
4713 DEPYASM=$yasmexe
4714 AR=$ar
4715 ARFLAGS=$arflags
4716 AR_O=$ar_o
4717 RANLIB=$ranlib
4718 CP=cp -p
4719 LN_S=$ln_s
4720 STRIP=$strip
4721 CPPFLAGS=$CPPFLAGS
4722 CFLAGS=$CFLAGS
4723 CXXFLAGS=$CXXFLAGS
4724 ASFLAGS=$ASFLAGS
4725 AS_C=$AS_C
4726 AS_O=$AS_O
4727 CC_C=$CC_C
4728 CC_E=$CC_E
4729 CC_O=$CC_O
4730 CXX_C=$CXX_C
4731 CXX_O=$CXX_O
4732 LD_O=$LD_O
4733 LD_LIB=$LD_LIB
4734 LD_PATH=$LD_PATH
4735 DLLTOOL=$dlltool
4736 LDFLAGS=$LDFLAGS
4737 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4738 YASMFLAGS=$YASMFLAGS
4739 BUILDSUF=$build_suffix
4740 PROGSSUF=$progs_suffix
4741 FULLNAME=$FULLNAME
4742 LIBPREF=$LIBPREF
4743 LIBSUF=$LIBSUF
4744 LIBNAME=$LIBNAME
4745 SLIBPREF=$SLIBPREF
4746 SLIBSUF=$SLIBSUF
4747 EXESUF=$EXESUF
4748 EXTRA_VERSION=$extra_version
4749 CCDEP=$CCDEP
4750 CXXDEP=$CXXDEP
4751 CCDEP_FLAGS=$CCDEP_FLAGS
4752 ASDEP=$ASDEP
4753 ASDEP_FLAGS=$ASDEP_FLAGS
4754 CC_DEPFLAGS=$CC_DEPFLAGS
4755 AS_DEPFLAGS=$AS_DEPFLAGS
4756 HOSTCC=$host_cc
4757 HOSTLD=$host_ld
4758 HOSTCFLAGS=$host_cflags
4759 HOSTCPPFLAGS=$host_cppflags
4760 HOSTEXESUF=$HOSTEXESUF
4761 HOSTLDFLAGS=$host_ldflags
4762 HOSTLIBS=$host_libs
4763 DEPHOSTCC=$host_cc
4764 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4765 HOSTCCDEP=$HOSTCCDEP
4766 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4767 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4768 HOSTCC_C=$HOSTCC_C
4769 HOSTCC_O=$HOSTCC_O
4770 HOSTLD_O=$HOSTLD_O
4771 TARGET_EXEC=$target_exec $target_exec_args
4772 TARGET_PATH=$target_path
4773 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4774 LIBS-ffplay=$sdl_libs
4775 CFLAGS-ffplay=$sdl_cflags
4776 ZLIB=$($ldflags_filter -lz)
4777 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4778 EXTRALIBS=$extralibs
4779 COMPAT_OBJS=$compat_objs
4780 EXEOBJS=$exeobjs
4781 INSTALL=$install
4782 LIBTARGET=${LIBTARGET}
4783 SLIBNAME=${SLIBNAME}
4784 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4785 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4786 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4787 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}