Merge commit '9af7a8523a6bb517834ebed36093bdab11a8b38e'
[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-ladspa          enable LADSPA audio filtering
197   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
198   --enable-libass          enable libass subtitles rendering [no]
199   --enable-libbluray       enable BluRay reading using libbluray [no]
200   --enable-libcaca         enable textual display using libcaca
201   --enable-libcelt         enable CELT decoding via libcelt [no]
202   --enable-libcdio         enable audio CD grabbing with libcdio
203   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
204                            and libraw1394 [no]
205   --enable-libfaac         enable AAC encoding via libfaac [no]
206   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
207   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
208   --enable-libfreetype     enable libfreetype [no]
209   --enable-libgme          enable Game Music Emu via libgme [no]
210   --enable-libgsm          enable GSM de/encoding via libgsm [no]
211   --enable-libiec61883     enable iec61883 via libiec61883 [no]
212   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
213   --enable-libmodplug      enable ModPlug via libmodplug [no]
214   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
215   --enable-libnut          enable NUT (de)muxing via libnut,
216                            native (de)muxer exists [no]
217   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
218   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
219   --enable-libopencv       enable video filtering via libopencv [no]
220   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
221   --enable-libopus         enable Opus decoding via libopus [no]
222   --enable-libpulse        enable Pulseaudio input via libpulse [no]
223   --enable-libquvi         enable quvi input via libquvi [no]
224   --enable-librtmp         enable RTMP[E] support via librtmp [no]
225   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
226   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
227   --enable-libsoxr         enable Include libsoxr resampling [no]
228   --enable-libspeex        enable Speex de/encoding via libspeex [no]
229   --enable-libssh          enable SFTP protocol via libssh [no]
230   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
231   --enable-libtheora       enable Theora encoding via libtheora [no]
232   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
233   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
234   --enable-libv4l2         enable libv4l2/v4l-utils [no]
235   --enable-libvidstab      enable video stabilization using vid.stab [no]
236   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
237   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
238   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
239                            native implementation exists [no]
240   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
241   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
242   --enable-libx264         enable H.264 encoding via x264 [no]
243   --enable-libxavs         enable AVS encoding via xavs [no]
244   --enable-libxvid         enable Xvid encoding via xvidcore,
245                            native MPEG-4/Xvid encoder exists [no]
246   --enable-libzmq          enable message passing via libzmq [no]
247   --enable-libzvbi         enable teletext support via libzvbi [no]
248   --enable-openal          enable OpenAL 1.1 capture support [no]
249   --enable-opencl          enable OpenCL code
250   --enable-openssl         enable openssl [no]
251   --enable-x11grab         enable X11 grabbing [no]
252   --disable-zlib           disable zlib [autodetect]
253
254 Advanced options (experts only):
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool NM [$nm_default]
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
269   --cc=CC                  use C compiler CC [$cc_default]
270   --cxx=CXX                use C compiler CXX [$cxx_default]
271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
272   --ld=LD                  use linker LD [$ld_default]
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
288   --progs-suffix=SUFFIX    program name suffix []
289   --arch=ARCH              select architecture [$arch]
290   --cpu=CPU                select the minimum required CPU (affects
291                            instruction selection, may crash on older CPUs)
292   --enable-pic             build position-independent code
293   --enable-sram            allow use of on-chip SRAM
294   --enable-thumb           compile for Thumb instruction set
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
301   --enable-lto             use link-time optimization
302
303 Optimization options (experts only):
304   --disable-asm            disable all assembler optimizations
305   --disable-altivec        disable AltiVec optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-fma4           disable FMA4 optimizations
318   --disable-avx2           disable AVX2 optimizations
319   --disable-armv5te        disable armv5te optimizations
320   --disable-armv6          disable armv6 optimizations
321   --disable-armv6t2        disable armv6t2 optimizations
322   --disable-vfp            disable VFP optimizations
323   --disable-neon           disable NEON optimizations
324   --disable-vis            disable VIS optimizations
325   --disable-inline-asm     disable use of inline assembler
326   --disable-yasm           disable use of yasm assembler
327   --disable-mips32r2       disable MIPS32R2 optimizations
328   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
329   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
330   --disable-mipsfpu        disable floating point MIPS optimizations
331   --disable-fast-unaligned consider unaligned accesses slow
332
333 Developer options (useful when working on FFmpeg itself):
334   --disable-debug          disable debugging symbols
335   --enable-debug=LEVEL     set the debug level [$debuglevel]
336   --disable-optimizations  disable compiler optimizations
337   --enable-extra-warnings  enable more compiler warnings
338   --disable-stripping      disable stripping of executables and shared libraries
339   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
340                            2 causes a slowdown at runtime.
341   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
342   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
343                            leaks and errors, using the specified valgrind binary.
344                            Cannot be combined with --target-exec
345   --enable-ftrapv          Trap arithmetic overflows
346   --samples=PATH           location of test samples for FATE, if not set use
347                            \$FATE_SAMPLES at make invocation time.
348   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
349                            should be used only for debugging purposes)
350   --enable-random          randomly enable/disable components
351   --disable-random
352   --enable-random=LIST     randomly enable/disable specific components or
353   --disable-random=LIST    component groups. LIST is a comma-separated list
354                            of NAME[:PROB] entries where NAME is a component
355                            (group) and PROB the probability associated with
356                            NAME (default 0.5).
357   --random-seed=VALUE      seed value for --enable/disable-random
358
359 NOTE: Object files are built at the place where configure is launched.
360 EOF
361   exit 0
362 }
363
364 quotes='""'
365
366 log(){
367     echo "$@" >> $logfile
368 }
369
370 log_file(){
371     log BEGIN $1
372     pr -n -t $1 >> $logfile
373     log END $1
374 }
375
376 echolog(){
377     log "$@"
378     echo "$@"
379 }
380
381 warn(){
382     log "WARNING: $*"
383     WARNINGS="${WARNINGS}WARNING: $*\n"
384 }
385
386 die(){
387     echolog "$@"
388     cat <<EOF
389
390 If you think configure made a mistake, make sure you are using the latest
391 version from Git.  If the latest version fails, report the problem to the
392 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
393 EOF
394     if disabled logging; then
395         cat <<EOF
396 Rerun configure with logging enabled (do not use --disable-logging), and
397 include the log this produces with your report.
398 EOF
399     else
400         cat <<EOF
401 Include the log file "$logfile" produced by configure as this will help
402 solving the problem.
403 EOF
404     fi
405     exit 1
406 }
407
408 # Avoid locale weirdness, besides we really just want to translate ASCII.
409 toupper(){
410     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
411 }
412
413 tolower(){
414     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
415 }
416
417 c_escape(){
418     echo "$*" | sed 's/["\\]/\\\0/g'
419 }
420
421 sh_quote(){
422     v=$(echo "$1" | sed "s/'/'\\\\''/g")
423     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
424     echo "$v"
425 }
426
427 cleanws(){
428     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
429 }
430
431 filter(){
432     pat=$1
433     shift
434     for v; do
435         eval "case $v in $pat) echo $v ;; esac"
436     done
437 }
438
439 filter_out(){
440     pat=$1
441     shift
442     for v; do
443         eval "case $v in $pat) ;; *) echo $v ;; esac"
444     done
445 }
446
447 map(){
448     m=$1
449     shift
450     for v; do eval $m; done
451 }
452
453 add_suffix(){
454     suffix=$1
455     shift
456     for v; do echo ${v}${suffix}; done
457 }
458
459 set_all(){
460     value=$1
461     shift
462     for var in $*; do
463         eval $var=$value
464     done
465 }
466
467 set_weak(){
468     value=$1
469     shift
470     for var; do
471         eval : \${$var:=$value}
472     done
473 }
474
475 sanitize_var_name(){
476     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
477 }
478
479 set_safe(){
480     var=$1
481     shift
482     eval $(sanitize_var_name "$var")='$*'
483 }
484
485 get_safe(){
486     eval echo \$$(sanitize_var_name "$1")
487 }
488
489 pushvar(){
490     for pvar in $*; do
491         eval level=\${${pvar}_level:=0}
492         eval ${pvar}_${level}="\$$pvar"
493         eval ${pvar}_level=$(($level+1))
494     done
495 }
496
497 popvar(){
498     for pvar in $*; do
499         eval level=\${${pvar}_level:-0}
500         test $level = 0 && continue
501         eval level=$(($level-1))
502         eval $pvar="\${${pvar}_${level}}"
503         eval ${pvar}_level=$level
504         eval unset ${pvar}_${level}
505     done
506 }
507
508 enable(){
509     set_all yes $*
510 }
511
512 disable(){
513     set_all no $*
514 }
515
516 enable_weak(){
517     set_weak yes $*
518 }
519
520 disable_weak(){
521     set_weak no $*
522 }
523
524 enable_safe(){
525     for var; do
526         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
527     done
528 }
529
530 disable_safe(){
531     for var; do
532         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
533     done
534 }
535
536 do_enable_deep(){
537     for var; do
538         enabled $var && continue
539         eval sel="\$${var}_select"
540         eval sgs="\$${var}_suggest"
541         pushvar var sgs
542         enable_deep $sel
543         popvar sgs
544         enable_deep_weak $sgs
545         popvar var
546     done
547 }
548
549 enable_deep(){
550     do_enable_deep $*
551     enable $*
552 }
553
554 enable_deep_weak(){
555     for var; do
556         disabled $var && continue
557         pushvar var
558         do_enable_deep $var
559         popvar var
560         enable_weak $var
561     done
562 }
563
564 enabled(){
565     test "${1#!}" = "$1" && op== || op=!=
566     eval test "x\$${1#!}" $op "xyes"
567 }
568
569 disabled(){
570     test "${1#!}" = "$1" && op== || op=!=
571     eval test "x\$${1#!}" $op "xno"
572 }
573
574 enabled_all(){
575     for opt; do
576         enabled $opt || return 1
577     done
578 }
579
580 disabled_all(){
581     for opt; do
582         disabled $opt || return 1
583     done
584 }
585
586 enabled_any(){
587     for opt; do
588         enabled $opt && return 0
589     done
590 }
591
592 disabled_any(){
593     for opt; do
594         disabled $opt && return 0
595     done
596     return 1
597 }
598
599 set_default(){
600     for opt; do
601         eval : \${$opt:=\$${opt}_default}
602     done
603 }
604
605 is_in(){
606     value=$1
607     shift
608     for var in $*; do
609         [ $var = $value ] && return 0
610     done
611     return 1
612 }
613
614 do_check_deps(){
615     for cfg; do
616         cfg="${cfg#!}"
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_sel="\$${cfg}_select"
625         eval dep_sgs="\$${cfg}_suggest"
626         eval dep_ifa="\$${cfg}_if"
627         eval dep_ifn="\$${cfg}_if_any"
628
629         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
630         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
631         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
632
633         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
634         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
635         enabled_all  $dep_all || disable $cfg
636         enabled_any  $dep_any || disable $cfg
637         disabled_any $dep_sel && disable $cfg
638
639         if enabled $cfg; then
640             enable_deep $dep_sel
641             enable_deep_weak $dep_sgs
642         fi
643
644         disable ${cfg}_checking
645     done
646 }
647
648 check_deps(){
649     unset allopts
650
651     do_check_deps "$@"
652
653     for cfg in $allopts; do
654         enabled $cfg || continue
655         eval dep_extralibs="\$${cfg}_extralibs"
656         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
657     done
658 }
659
660 print_config(){
661     pfx=$1
662     files=$2
663     shift 2
664     map 'eval echo "$v \${$v:-no}"' "$@" |
665     awk "BEGIN { split(\"$files\", files) }
666         {
667             c = \"$pfx\" toupper(\$1);
668             v = \$2;
669             sub(/yes/, 1, v);
670             sub(/no/,  0, v);
671             for (f in files) {
672                 file = files[f];
673                 if (file ~ /\\.h\$/) {
674                     printf(\"#define %s %d\\n\", c, v) >>file;
675                 } else if (file ~ /\\.asm\$/) {
676                     printf(\"%%define %s %d\\n\", c, v) >>file;
677                 } else if (file ~ /\\.mak\$/) {
678                     n = -v ? \"\" : \"!\";
679                     printf(\"%s%s=yes\\n\", n, c) >>file;
680                 } else if (file ~ /\\.texi\$/) {
681                     pre = -v ? \"\" : \"@c \";
682                     yesno = \$2;
683                     c2 = tolower(c);
684                     gsub(/_/, \"-\", c2);
685                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
686                 }
687             }
688         }"
689 }
690
691 print_enabled(){
692     suf=$1
693     shift
694     for v; do
695         enabled $v && printf "%s\n" ${v%$suf};
696     done
697 }
698
699 append(){
700     var=$1
701     shift
702     eval "$var=\"\$$var $*\""
703 }
704
705 prepend(){
706     var=$1
707     shift
708     eval "$var=\"$* \$$var\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_cxxflags(){
720     append CXXFLAGS $($cflags_filter "$@")
721 }
722
723 add_asflags(){
724     append ASFLAGS $($asflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_extralibs(){
732     prepend extralibs $($ldflags_filter "$@")
733 }
734
735 add_host_cppflags(){
736     append host_cppflags "$@"
737 }
738
739 add_host_cflags(){
740     append host_cflags $($host_cflags_filter "$@")
741 }
742
743 add_host_ldflags(){
744     append host_ldflags $($host_ldflags_filter "$@")
745 }
746
747 add_compat(){
748     append compat_objs $1
749     shift
750     map 'add_cppflags -D$v' "$@"
751 }
752
753 check_cmd(){
754     log "$@"
755     "$@" >> $logfile 2>&1
756 }
757
758 cc_o(){
759     eval printf '%s\\n' $CC_O
760 }
761
762 cc_e(){
763     eval printf '%s\\n' $CC_E
764 }
765
766 check_cc(){
767     log check_cc "$@"
768     cat > $TMPC
769     log_file $TMPC
770     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
771 }
772
773 check_cxx(){
774     log check_cxx "$@"
775     cat > $TMPCPP
776     log_file $TMPCPP
777     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
778 }
779
780 check_cpp(){
781     log check_cpp "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
785 }
786
787 as_o(){
788     eval printf '%s\\n' $AS_O
789 }
790
791 check_as(){
792     log check_as "$@"
793     cat > $TMPS
794     log_file $TMPS
795     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
796 }
797
798 check_inline_asm(){
799     log check_inline_asm "$@"
800     name="$1"
801     code="$2"
802     shift 2
803     disable $name
804     check_cc "$@" <<EOF && enable $name
805 void foo(void){ __asm__ volatile($code); }
806 EOF
807 }
808
809 check_insn(){
810     log check_insn "$@"
811     check_inline_asm ${1}_inline "\"$2\""
812     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
813 }
814
815 check_yasm(){
816     log check_yasm "$@"
817     echo "$1" > $TMPS
818     log_file $TMPS
819     shift 1
820     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
821 }
822
823 ld_o(){
824     eval printf '%s\\n' $LD_O
825 }
826
827 check_ld(){
828     log check_ld "$@"
829     type=$1
830     shift 1
831     flags=$(filter_out '-l*|*.so' $@)
832     libs=$(filter '-l*|*.so' $@)
833     check_$type $($cflags_filter $flags) || return
834     flags=$($ldflags_filter $flags)
835     libs=$($ldflags_filter $libs)
836     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
837 }
838
839 check_code(){
840     log check_code "$@"
841     check=$1
842     headers=$2
843     code=$3
844     shift 3
845     {
846         for hdr in $headers; do
847             echo "#include <$hdr>"
848         done
849         echo "int main(void) { $code; return 0; }"
850     } | check_$check "$@"
851 }
852
853 check_cppflags(){
854     log check_cppflags "$@"
855     check_cc "$@" <<EOF && append CPPFLAGS "$@"
856 int x;
857 EOF
858 }
859
860 check_cflags(){
861     log check_cflags "$@"
862     set -- $($cflags_filter "$@")
863     check_cc "$@" <<EOF && append CFLAGS "$@"
864 int x;
865 EOF
866 }
867
868 check_cxxflags(){
869     log check_cxxflags "$@"
870     set -- $($cflags_filter "$@")
871     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
872 int x;
873 EOF
874 }
875
876 test_ldflags(){
877     log test_ldflags "$@"
878     check_ld "cc" "$@" <<EOF
879 int main(void){ return 0; }
880 EOF
881 }
882
883 check_ldflags(){
884     log check_ldflags "$@"
885     test_ldflags "$@" && add_ldflags "$@"
886 }
887
888 check_header(){
889     log check_header "$@"
890     header=$1
891     shift
892     disable_safe $header
893     check_cpp "$@" <<EOF && enable_safe $header
894 #include <$header>
895 int x;
896 EOF
897 }
898
899 check_func(){
900     log check_func "$@"
901     func=$1
902     shift
903     disable $func
904     check_ld "cc" "$@" <<EOF && enable $func
905 extern int $func();
906 int main(void){ $func(); }
907 EOF
908 }
909
910 check_mathfunc(){
911     log check_mathfunc "$@"
912     func=$1
913     narg=$2
914     shift 2
915     test $narg = 2 && args="f, g" || args="f"
916     disable $func
917     check_ld "cc" "$@" <<EOF && enable $func
918 #include <math.h>
919 float foo(float f, float g) { return $func($args); }
920 int main(void){ return (int) foo; }
921 EOF
922 }
923
924 check_func_headers(){
925     log check_func_headers "$@"
926     headers=$1
927     funcs=$2
928     shift 2
929     {
930         for hdr in $headers; do
931             echo "#include <$hdr>"
932         done
933         for func in $funcs; do
934             echo "long check_$func(void) { return (long) $func; }"
935         done
936         echo "int main(void) { return 0; }"
937     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
938 }
939
940 check_class_headers_cpp(){
941     log check_class_headers_cpp "$@"
942     headers=$1
943     classes=$2
944     shift 2
945     {
946         for hdr in $headers; do
947             echo "#include <$hdr>"
948         done
949         echo "int main(void) { "
950         i=1
951         for class in $classes; do
952             echo "$class obj$i;"
953             i=$(expr $i + 1)
954         done
955         echo "return 0; }"
956     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
957 }
958
959 check_cpp_condition(){
960     log check_cpp_condition "$@"
961     header=$1
962     condition=$2
963     shift 2
964     check_cpp "$@" <<EOF
965 #include <$header>
966 #if !($condition)
967 #error "unsatisfied condition: $condition"
968 #endif
969 EOF
970 }
971
972 check_lib(){
973     log check_lib "$@"
974     header="$1"
975     func="$2"
976     shift 2
977     check_header $header && check_func $func "$@" && add_extralibs "$@"
978 }
979
980 check_lib2(){
981     log check_lib2 "$@"
982     headers="$1"
983     funcs="$2"
984     shift 2
985     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
986 }
987
988 check_lib_cpp(){
989     log check_lib_cpp "$@"
990     headers="$1"
991     classes="$2"
992     shift 2
993     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
994 }
995
996 check_pkg_config(){
997     log check_pkg_config "$@"
998     pkg="$1"
999     headers="$2"
1000     funcs="$3"
1001     shift 3
1002     check_cmd $pkg_config --exists --print-errors $pkg || return
1003     pkg_cflags=$($pkg_config --cflags $pkg)
1004     pkg_libs=$($pkg_config --libs $pkg)
1005     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1006         set_safe ${pkg}_cflags $pkg_cflags   &&
1007         set_safe ${pkg}_libs   $pkg_libs
1008 }
1009
1010 check_exec(){
1011     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1012 }
1013
1014 check_exec_crash(){
1015     code=$(cat)
1016
1017     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1018     # are safe but may not be available everywhere.  Thus we use
1019     # raise(SIGTERM) instead.  The check is run in a subshell so we
1020     # can redirect the "Terminated" message from the shell.  SIGBUS
1021     # is not defined by standard C so it is used conditionally.
1022
1023     (check_exec "$@") >> $logfile 2>&1 <<EOF
1024 #include <signal.h>
1025 static void sighandler(int sig){
1026     raise(SIGTERM);
1027 }
1028 int foo(void){
1029     $code
1030 }
1031 int (*func_ptr)(void) = foo;
1032 int main(void){
1033     signal(SIGILL, sighandler);
1034     signal(SIGFPE, sighandler);
1035     signal(SIGSEGV, sighandler);
1036 #ifdef SIGBUS
1037     signal(SIGBUS, sighandler);
1038 #endif
1039     return func_ptr();
1040 }
1041 EOF
1042 }
1043
1044 check_type(){
1045     log check_type "$@"
1046     headers=$1
1047     type=$2
1048     shift 2
1049     disable_safe "$type"
1050     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1051 }
1052
1053 check_struct(){
1054     log check_struct "$@"
1055     headers=$1
1056     struct=$2
1057     member=$3
1058     shift 3
1059     disable_safe "${struct}_${member}"
1060     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1061         enable_safe "${struct}_${member}"
1062 }
1063
1064 check_builtin(){
1065     log check_builtin "$@"
1066     name=$1
1067     headers=$2
1068     builtin=$3
1069     shift 3
1070     disable "$name"
1071     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1072 }
1073
1074 require(){
1075     name="$1"
1076     header="$2"
1077     func="$3"
1078     shift 3
1079     check_lib $header $func "$@" || die "ERROR: $name not found"
1080 }
1081
1082 require2(){
1083     name="$1"
1084     headers="$2"
1085     func="$3"
1086     shift 3
1087     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1088 }
1089
1090 require_cpp(){
1091     name="$1"
1092     headers="$2"
1093     classes="$3"
1094     shift 3
1095     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1096 }
1097
1098 require_pkg_config(){
1099     pkg="$1"
1100     check_pkg_config "$@" || die "ERROR: $pkg not found"
1101     add_cflags    $(get_safe ${pkg}_cflags)
1102     add_extralibs $(get_safe ${pkg}_libs)
1103 }
1104
1105 hostcc_o(){
1106     eval printf '%s\\n' $HOSTCC_O
1107 }
1108
1109 check_host_cc(){
1110     log check_host_cc "$@"
1111     cat > $TMPC
1112     log_file $TMPC
1113     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1114 }
1115
1116 check_host_cppflags(){
1117     log check_host_cppflags "$@"
1118     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1119 int x;
1120 EOF
1121 }
1122
1123 check_host_cflags(){
1124     log check_host_cflags "$@"
1125     set -- $($host_cflags_filter "$@")
1126     check_host_cc "$@" <<EOF && append host_cflags "$@"
1127 int x;
1128 EOF
1129 }
1130
1131 apply(){
1132     file=$1
1133     shift
1134     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1135 }
1136
1137 cp_if_changed(){
1138     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1139     mkdir -p "$(dirname $2)"
1140     $cp_f "$1" "$2"
1141 }
1142
1143 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1144 # system-dependent things.
1145
1146 COMPONENT_LIST="
1147     bsfs
1148     decoders
1149     demuxers
1150     encoders
1151     filters
1152     hwaccels
1153     indevs
1154     muxers
1155     outdevs
1156     parsers
1157     protocols
1158 "
1159
1160 EXTERNAL_LIBRARY_LIST="
1161     avisynth
1162     bzlib
1163     crystalhd
1164     fontconfig
1165     frei0r
1166     gnutls
1167     iconv
1168     ladspa
1169     libaacplus
1170     libass
1171     libbluray
1172     libcaca
1173     libcdio
1174     libcelt
1175     libdc1394
1176     libfaac
1177     libfdk_aac
1178     libflite
1179     libfreetype
1180     libgme
1181     libgsm
1182     libiec61883
1183     libilbc
1184     libmodplug
1185     libmp3lame
1186     libnut
1187     libopencore_amrnb
1188     libopencore_amrwb
1189     libopencv
1190     libopenjpeg
1191     libopus
1192     libpulse
1193     libquvi
1194     librtmp
1195     libschroedinger
1196     libshine
1197     libsoxr
1198     libspeex
1199     libssh
1200     libstagefright_h264
1201     libtheora
1202     libtwolame
1203     libutvideo
1204     libv4l2
1205     libvidstab
1206     libvo_aacenc
1207     libvo_amrwbenc
1208     libvorbis
1209     libvpx
1210     libwavpack
1211     libx264
1212     libxavs
1213     libxvid
1214     libzmq
1215     libzvbi
1216     openal
1217     opencl
1218     openssl
1219     x11grab
1220     zlib
1221 "
1222
1223 DOCUMENT_LIST="
1224     doc
1225     htmlpages
1226     manpages
1227     podpages
1228     txtpages
1229 "
1230
1231 HWACCEL_LIST="
1232     dxva2
1233     vaapi
1234     vda
1235     vdpau
1236 "
1237
1238 LIBRARY_LIST="
1239     avcodec
1240     avdevice
1241     avfilter
1242     avformat
1243     avresample
1244     avutil
1245     postproc
1246     swresample
1247     swscale
1248 "
1249
1250 PROGRAM_LIST="
1251     ffplay
1252     ffprobe
1253     ffserver
1254     ffmpeg
1255 "
1256
1257 CONFIG_LIST="
1258     $COMPONENT_LIST
1259     $DOCUMENT_LIST
1260     $EXTERNAL_LIBRARY_LIST
1261     $HWACCEL_LIST
1262     $LIBRARY_LIST
1263     $PROGRAM_LIST
1264     dct
1265     dwt
1266     error_resilience
1267     fast_unaligned
1268     fft
1269     ftrapv
1270     gpl
1271     gray
1272     hardcoded_tables
1273     incompatible_libav_abi
1274     incompatible_fork_abi
1275     lsp
1276     lzo
1277     mdct
1278     memalign_hack
1279     memory_poisoning
1280     network
1281     nonfree
1282     pic
1283     rdft
1284     runtime_cpudetect
1285     safe_bitstream_reader
1286     shared
1287     small
1288     sram
1289     static
1290     swscale_alpha
1291     thumb
1292     version3
1293     xmm_clobber_test
1294 "
1295
1296 THREADS_LIST='
1297     pthreads
1298     w32threads
1299     os2threads
1300 '
1301
1302 ATOMICS_LIST='
1303     atomics_gcc
1304     atomics_suncc
1305     atomics_win32
1306 '
1307
1308 ARCH_LIST='
1309     aarch64
1310     alpha
1311     arm
1312     avr32
1313     avr32_ap
1314     avr32_uc
1315     bfin
1316     ia64
1317     m68k
1318     mips
1319     mips64
1320     parisc
1321     ppc
1322     ppc64
1323     s390
1324     sh4
1325     sparc
1326     sparc64
1327     tilegx
1328     tilepro
1329     tomi
1330     x86
1331     x86_32
1332     x86_64
1333 '
1334
1335 ARCH_EXT_LIST_ARM='
1336     armv5te
1337     armv6
1338     armv6t2
1339     neon
1340     vfp
1341     vfpv3
1342 '
1343
1344 ARCH_EXT_LIST_X86='
1345     amd3dnow
1346     amd3dnowext
1347     avx
1348     avx2
1349     fma4
1350     i686
1351     mmx
1352     mmxext
1353     sse
1354     sse2
1355     sse3
1356     sse4
1357     sse42
1358     ssse3
1359 '
1360
1361 ARCH_EXT_LIST="
1362     $ARCH_EXT_LIST_ARM
1363     $ARCH_EXT_LIST_X86
1364     altivec
1365     ppc4xx
1366     vis
1367     mipsfpu
1368     mips32r2
1369     mipsdspr1
1370     mipsdspr2
1371 "
1372
1373 HAVE_LIST_CMDLINE='
1374     inline_asm
1375     symver
1376     yasm
1377 '
1378
1379 HAVE_LIST_PUB='
1380     bigendian
1381     fast_unaligned
1382     incompatible_libav_abi
1383     incompatible_fork_abi
1384 '
1385
1386 MATH_FUNCS="
1387     atanf
1388     atan2f
1389     cbrt
1390     cbrtf
1391     cosf
1392     exp2
1393     exp2f
1394     expf
1395     isinf
1396     isnan
1397     ldexpf
1398     llrint
1399     llrintf
1400     log2
1401     log2f
1402     log10f
1403     lrint
1404     lrintf
1405     powf
1406     rint
1407     round
1408     roundf
1409     sinf
1410     trunc
1411     truncf
1412 "
1413
1414 HAVE_LIST="
1415     $ARCH_EXT_LIST
1416     $(add_suffix _external $ARCH_EXT_LIST)
1417     $(add_suffix _inline   $ARCH_EXT_LIST)
1418     $HAVE_LIST_CMDLINE
1419     $HAVE_LIST_PUB
1420     $THREADS_LIST
1421     $ATOMICS_LIST
1422     $MATH_FUNCS
1423     access
1424     aligned_malloc
1425     aligned_stack
1426     alsa_asoundlib_h
1427     altivec_h
1428     arpa_inet_h
1429     asm_mod_q
1430     asm_mod_y
1431     asm_types_h
1432     atomic_cas_ptr
1433     atomics_native
1434     attribute_may_alias
1435     attribute_packed
1436     cdio_paranoia_h
1437     cdio_paranoia_paranoia_h
1438     CL_cl_h
1439     clock_gettime
1440     closesocket
1441     CommandLineToArgvW
1442     cpunop
1443     CryptGenRandom
1444     dcbzl
1445     dev_bktr_ioctl_bt848_h
1446     dev_bktr_ioctl_meteor_h
1447     dev_ic_bt8xx_h
1448     dev_video_bktr_ioctl_bt848_h
1449     dev_video_meteor_ioctl_meteor_h
1450     direct_h
1451     dlfcn_h
1452     dlopen
1453     dos_paths
1454     dxva_h
1455     ebp_available
1456     ebx_available
1457     fast_64bit
1458     fast_clz
1459     fast_cmov
1460     fcntl
1461     fork
1462     getaddrinfo
1463     gethrtime
1464     getopt
1465     GetProcessAffinityMask
1466     GetProcessMemoryInfo
1467     GetProcessTimes
1468     GetSystemTimeAsFileTime
1469     getrusage
1470     getservbyport
1471     gettimeofday
1472     glob
1473     gnu_as
1474     gsm_h
1475     ibm_asm
1476     inet_aton
1477     io_h
1478     inline_asm_labels
1479     isatty
1480     jack_port_get_latency_range
1481     kbhit
1482     ldbrx
1483     libdc1394_1
1484     libdc1394_2
1485     local_aligned_16
1486     local_aligned_8
1487     localtime_r
1488     loongson
1489     lzo1x_999_compress
1490     machine_ioctl_bt848_h
1491     machine_ioctl_meteor_h
1492     machine_rw_barrier
1493     makeinfo
1494     malloc_h
1495     MapViewOfFile
1496     memalign
1497     MemoryBarrier
1498     mkstemp
1499     mm_empty
1500     mmap
1501     mprotect
1502     msvcrt
1503     nanosleep
1504     openjpeg_1_5_openjpeg_h
1505     PeekNamedPipe
1506     perl
1507     pod2man
1508     poll_h
1509     posix_memalign
1510     pragma_deprecated
1511     pthread_cancel
1512     rdtsc
1513     rsync_contimeout
1514     sarestart
1515     sched_getaffinity
1516     sdl
1517     SetConsoleTextAttribute
1518     setmode
1519     setrlimit
1520     Sleep
1521     sndio_h
1522     socklen_t
1523     soundcard_h
1524     strerror_r
1525     struct_addrinfo
1526     struct_group_source_req
1527     struct_ip_mreq_source
1528     struct_ipv6_mreq
1529     struct_pollfd
1530     struct_rusage_ru_maxrss
1531     struct_sctp_event_subscribe
1532     struct_sockaddr_in6
1533     struct_sockaddr_sa_len
1534     struct_sockaddr_storage
1535     struct_stat_st_mtim_tv_nsec
1536     struct_v4l2_frmivalenum_discrete
1537     symver_asm_label
1538     symver_gnu_asm
1539     sync_val_compare_and_swap
1540     sysconf
1541     sysctl
1542     sys_mman_h
1543     sys_param_h
1544     sys_resource_h
1545     sys_select_h
1546     sys_soundcard_h
1547     sys_time_h
1548     sys_un_h
1549     sys_videoio_h
1550     termios_h
1551     texi2html
1552     threads
1553     unistd_h
1554     usleep
1555     vfp_args
1556     VirtualAlloc
1557     windows_h
1558     winsock2_h
1559     xform_asm
1560     xmm_clobbers
1561 "
1562
1563 # options emitted with CONFIG_ prefix but not available on the command line
1564 CONFIG_EXTRA="
1565     aandcttables
1566     ac3dsp
1567     audio_frame_queue
1568     dsputil
1569     exif
1570     frame_thread_encoder
1571     gcrypt
1572     golomb
1573     gplv3
1574     h264chroma
1575     h264dsp
1576     h264pred
1577     h264qpel
1578     hpeldsp
1579     huffman
1580     lgplv3
1581     lpc
1582     mpegaudio
1583     mpegaudiodsp
1584     mpegvideo
1585     mpegvideoenc
1586     nettle
1587     rangecoder
1588     riffdec
1589     riffenc
1590     rtpdec
1591     rtpenc_chain
1592     sinewin
1593     videodsp
1594     vp3dsp
1595 "
1596
1597 CMDLINE_SELECT="
1598     $ARCH_EXT_LIST
1599     $CONFIG_LIST
1600     $HAVE_LIST_CMDLINE
1601     $THREADS_LIST
1602     asm
1603     cross_compile
1604     debug
1605     extra_warnings
1606     logging
1607     lto
1608     optimizations
1609     stripping
1610 "
1611
1612 PATHS_LIST='
1613     bindir
1614     datadir
1615     docdir
1616     incdir
1617     libdir
1618     mandir
1619     prefix
1620     shlibdir
1621 '
1622
1623 CMDLINE_SET="
1624     $PATHS_LIST
1625     ar
1626     arch
1627     as
1628     assert_level
1629     build_suffix
1630     cc
1631     cpu
1632     cross_prefix
1633     cxx
1634     dep_cc
1635     extra_version
1636     host_cc
1637     host_cflags
1638     host_ld
1639     host_ldflags
1640     host_libs
1641     host_os
1642     install
1643     ld
1644     logfile
1645     malloc_prefix
1646     nm
1647     optflags
1648     pkg_config
1649     progs_suffix
1650     random_seed
1651     samples
1652     strip
1653     sysinclude
1654     sysroot
1655     target_exec
1656     target_os
1657     target_path
1658     target_samples
1659     tempprefix
1660     toolchain
1661     valgrind
1662     yasmexe
1663 "
1664
1665 CMDLINE_APPEND="
1666     extra_cflags
1667     extra_cxxflags
1668     host_cppflags
1669 "
1670
1671 # code dependency declarations
1672
1673 # architecture extensions
1674
1675 armv5te_deps="arm"
1676 armv6_deps="arm"
1677 armv6t2_deps="arm"
1678 neon_deps="arm"
1679 vfp_deps="arm"
1680 vfpv3_deps="vfp"
1681
1682 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1683
1684 mipsfpu_deps="mips"
1685 mips32r2_deps="mips"
1686 mipsdspr1_deps="mips"
1687 mipsdspr2_deps="mips"
1688
1689 altivec_deps="ppc"
1690 ppc4xx_deps="ppc"
1691
1692 vis_deps="sparc"
1693
1694 cpunop_deps="i686"
1695 x86_64_select="i686"
1696 x86_64_suggest="fast_cmov"
1697
1698 amd3dnow_deps="mmx"
1699 amd3dnowext_deps="amd3dnow"
1700 mmx_deps="x86"
1701 mmxext_deps="mmx"
1702 sse_deps="mmxext"
1703 sse2_deps="sse"
1704 sse3_deps="sse2"
1705 ssse3_deps="sse3"
1706 sse4_deps="ssse3"
1707 sse42_deps="sse4"
1708 avx_deps="sse42"
1709 fma4_deps="avx"
1710 avx2_deps="avx"
1711
1712 mmx_external_deps="yasm"
1713 mmx_inline_deps="inline_asm"
1714 mmx_suggest="mmx_external mmx_inline"
1715
1716 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1717     eval dep=\$${ext}_deps
1718     eval ${ext}_external_deps='"${dep}_external"'
1719     eval ${ext}_inline_deps='"${dep}_inline"'
1720     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1721 done
1722
1723 aligned_stack_if_any="ppc x86"
1724 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1725 fast_clz_if_any="alpha avr32 mips ppc x86"
1726 fast_unaligned_if_any="ppc x86"
1727
1728 inline_asm_deps="!tms470"
1729 need_memalign="altivec neon sse"
1730
1731 symver_if_any="symver_asm_label symver_gnu_asm"
1732
1733 log2_deps="!msvcrt"
1734
1735 # subsystems
1736 dct_select="rdft"
1737 error_resilience_select="dsputil"
1738 frame_thread_encoder_deps="encoders threads"
1739 lpc_select="dsputil"
1740 mdct_select="fft"
1741 rdft_select="fft"
1742 mpegaudio_select="mpegaudiodsp"
1743 mpegaudiodsp_select="dct"
1744 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1745 mpegvideoenc_select="mpegvideo"
1746
1747 # decoders / encoders
1748 aac_decoder_select="mdct sinewin"
1749 aac_encoder_select="audio_frame_queue mdct sinewin"
1750 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1751 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1752 ac3_encoder_select="mdct ac3dsp dsputil"
1753 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1754 aic_decoder_select="dsputil golomb"
1755 alac_encoder_select="lpc"
1756 als_decoder_select="dsputil"
1757 amrnb_decoder_select="lsp"
1758 amrwb_decoder_select="lsp"
1759 amv_decoder_select="dsputil hpeldsp exif"
1760 amv_encoder_select="aandcttables"
1761 ape_decoder_select="dsputil"
1762 asv1_decoder_select="dsputil"
1763 asv1_encoder_select="dsputil"
1764 asv2_decoder_select="dsputil"
1765 asv2_encoder_select="dsputil"
1766 atrac1_decoder_select="mdct sinewin"
1767 atrac3_decoder_select="mdct"
1768 avrn_decoder_select="exif"
1769 bink_decoder_select="dsputil hpeldsp"
1770 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1771 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1772 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1773 cllc_decoder_select="dsputil"
1774 comfortnoise_encoder_select="lpc"
1775 cook_decoder_select="dsputil mdct sinewin"
1776 cscd_decoder_select="lzo"
1777 cscd_decoder_suggest="zlib"
1778 dca_decoder_select="mdct"
1779 dirac_decoder_select="dsputil dwt golomb videodsp"
1780 dnxhd_decoder_select="dsputil"
1781 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1782 dvvideo_decoder_select="dsputil"
1783 dvvideo_encoder_select="dsputil"
1784 dxa_decoder_select="zlib"
1785 eac3_decoder_select="ac3_decoder"
1786 eac3_encoder_select="ac3_encoder"
1787 eamad_decoder_select="aandcttables dsputil mpegvideo"
1788 eatgq_decoder_select="aandcttables"
1789 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1790 exr_decoder_select="zlib"
1791 ffv1_decoder_select="dsputil golomb rangecoder"
1792 ffv1_encoder_select="dsputil rangecoder"
1793 ffvhuff_decoder_select="dsputil"
1794 ffvhuff_encoder_select="dsputil huffman"
1795 flac_decoder_select="golomb"
1796 flac_encoder_select="dsputil golomb lpc"
1797 flashsv_decoder_select="zlib"
1798 flashsv_encoder_select="zlib"
1799 flashsv2_encoder_select="zlib"
1800 flashsv2_decoder_select="zlib"
1801 flv_decoder_select="h263_decoder"
1802 flv_encoder_select="h263_encoder"
1803 fourxm_decoder_select="dsputil"
1804 fraps_decoder_select="dsputil huffman"
1805 g2m_decoder_select="dsputil zlib"
1806 g729_decoder_select="dsputil"
1807 h261_decoder_select="error_resilience mpegvideo"
1808 h261_encoder_select="aandcttables mpegvideoenc"
1809 h263_decoder_select="error_resilience h263_parser mpegvideo"
1810 h263_encoder_select="aandcttables mpegvideoenc"
1811 h263i_decoder_select="h263_decoder"
1812 h263p_encoder_select="h263_encoder"
1813 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1814 h264_decoder_suggest="error_resilience"
1815 hevc_decoder_select="dsputil golomb videodsp"
1816 huffyuv_decoder_select="dsputil"
1817 huffyuv_encoder_select="dsputil huffman"
1818 iac_decoder_select="dsputil fft mdct sinewin"
1819 imc_decoder_select="dsputil fft mdct sinewin"
1820 indeo3_decoder_select="hpeldsp"
1821 interplay_video_decoder_select="hpeldsp"
1822 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1823 jpegls_encoder_select="golomb"
1824 jv_decoder_select="dsputil"
1825 lagarith_decoder_select="dsputil"
1826 ljpeg_encoder_select="aandcttables mpegvideoenc"
1827 loco_decoder_select="golomb"
1828 mdec_decoder_select="dsputil error_resilience mpegvideo"
1829 metasound_decoder_select="lsp mdct sinewin"
1830 mimic_decoder_select="dsputil hpeldsp"
1831 mjpeg_decoder_select="dsputil hpeldsp exif"
1832 mjpegb_decoder_select="dsputil hpeldsp exif"
1833 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1834 mlp_decoder_select="dsputil mlp_parser"
1835 motionpixels_decoder_select="dsputil"
1836 mp1_decoder_select="mpegaudio"
1837 mp1float_decoder_select="mpegaudio"
1838 mp2_decoder_select="mpegaudio"
1839 mp2float_decoder_select="mpegaudio"
1840 mp3_decoder_select="mpegaudio"
1841 mp3adu_decoder_select="mpegaudio"
1842 mp3adufloat_decoder_select="mpegaudio"
1843 mp3float_decoder_select="mpegaudio"
1844 mp3on4_decoder_select="mpegaudio"
1845 mp3on4float_decoder_select="mpegaudio"
1846 mpc7_decoder_select="dsputil mpegaudiodsp"
1847 mpc8_decoder_select="dsputil mpegaudiodsp"
1848 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1849 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1850 mpeg1video_decoder_select="error_resilience mpegvideo"
1851 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1852 mpeg2video_decoder_select="error_resilience mpegvideo"
1853 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1854 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1855 mpeg4_encoder_select="h263_encoder"
1856 msmpeg4v1_decoder_select="h263_decoder"
1857 msmpeg4v2_decoder_select="h263_decoder"
1858 msmpeg4v2_encoder_select="h263_encoder"
1859 msmpeg4v3_decoder_select="h263_decoder"
1860 msmpeg4v3_encoder_select="h263_encoder"
1861 mss2_decoder_select="error_resilience vc1_decoder"
1862 mxpeg_decoder_select="dsputil hpeldsp exif"
1863 nellymoser_decoder_select="mdct sinewin"
1864 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1865 nuv_decoder_select="dsputil lzo"
1866 png_decoder_select="zlib"
1867 png_encoder_select="dsputil zlib"
1868 prores_decoder_select="dsputil"
1869 prores_encoder_select="dsputil"
1870 qcelp_decoder_select="lsp"
1871 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1872 ra_144_encoder_select="audio_frame_queue lpc"
1873 ralf_decoder_select="golomb"
1874 rtjpeg_decoder_select="dsputil"
1875 rv10_decoder_select="error_resilience h263_decoder"
1876 rv10_encoder_select="h263_encoder"
1877 rv20_decoder_select="error_resilience h263_decoder"
1878 rv20_encoder_select="h263_encoder"
1879 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1880 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1881 shorten_decoder_select="golomb"
1882 sipr_decoder_select="lsp"
1883 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1884 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1885 sonic_decoder_select="golomb"
1886 sonic_encoder_select="golomb"
1887 sonic_ls_encoder_select="golomb"
1888 sp5x_decoder_select="dsputil hpeldsp exif"
1889 svq1_decoder_select="hpeldsp"
1890 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1891 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1892 svq3_decoder_suggest="error_resilience zlib"
1893 tak_decoder_select="dsputil"
1894 theora_decoder_select="vp3_decoder"
1895 tiff_decoder_suggest="zlib"
1896 tiff_encoder_suggest="zlib"
1897 thp_decoder_select="dsputil hpeldsp exif"
1898 truehd_decoder_select="mlp_parser"
1899 truemotion2_decoder_select="dsputil"
1900 truespeech_decoder_select="dsputil"
1901 tscc_decoder_select="zlib"
1902 twinvq_decoder_select="mdct lsp sinewin"
1903 utvideo_decoder_select="dsputil"
1904 utvideo_encoder_select="dsputil huffman"
1905 vble_decoder_select="dsputil"
1906 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1907 vc1image_decoder_select="vc1_decoder"
1908 vorbis_decoder_select="mdct"
1909 vorbis_encoder_select="mdct"
1910 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1911 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1912 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1913 vp6a_decoder_select="vp6_decoder"
1914 vp6f_decoder_select="vp6_decoder"
1915 vp8_decoder_select="h264pred videodsp"
1916 vp9_decoder_select="videodsp"
1917 webp_decoder_select="vp8_decoder"
1918 wmapro_decoder_select="mdct sinewin"
1919 wmav1_decoder_select="mdct sinewin"
1920 wmav1_encoder_select="mdct sinewin"
1921 wmav2_decoder_select="mdct sinewin"
1922 wmav2_encoder_select="mdct sinewin"
1923 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1924 wmv1_decoder_select="h263_decoder"
1925 wmv1_encoder_select="h263_encoder"
1926 wmv2_decoder_select="h263_decoder videodsp"
1927 wmv2_encoder_select="h263_encoder"
1928 wmv3_decoder_select="vc1_decoder"
1929 wmv3image_decoder_select="wmv3_decoder"
1930 zerocodec_decoder_select="zlib"
1931 zlib_decoder_select="zlib"
1932 zlib_encoder_select="zlib"
1933 zmbv_decoder_select="zlib"
1934 zmbv_encoder_select="zlib"
1935
1936 # hardware accelerators
1937 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1938 dxva2_deps="dxva2api_h"
1939 vaapi_deps="va_va_h"
1940 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1941 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1942 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1943
1944 h263_vaapi_hwaccel_deps="vaapi"
1945 h263_vaapi_hwaccel_select="h263_decoder"
1946 h263_vdpau_hwaccel_deps="vdpau"
1947 h263_vdpau_hwaccel_select="h263_decoder"
1948 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1949 h264_dxva2_hwaccel_deps="dxva2"
1950 h264_dxva2_hwaccel_select="h264_decoder"
1951 h264_vaapi_hwaccel_deps="vaapi"
1952 h264_vaapi_hwaccel_select="h264_decoder"
1953 h264_vda_decoder_deps="vda"
1954 h264_vda_decoder_select="h264_decoder"
1955 h264_vda_hwaccel_deps="vda"
1956 h264_vda_hwaccel_select="h264_decoder"
1957 h264_vdpau_decoder_deps="vdpau"
1958 h264_vdpau_decoder_select="h264_decoder"
1959 h264_vdpau_hwaccel_deps="vdpau"
1960 h264_vdpau_hwaccel_select="h264_decoder"
1961 mpeg_vdpau_decoder_deps="vdpau"
1962 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1963 mpeg1_vdpau_decoder_deps="vdpau"
1964 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1965 mpeg1_vdpau_hwaccel_deps="vdpau"
1966 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1967 mpeg2_crystalhd_decoder_select="crystalhd"
1968 mpeg2_dxva2_hwaccel_deps="dxva2"
1969 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1970 mpeg2_vaapi_hwaccel_deps="vaapi"
1971 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1972 mpeg2_vdpau_hwaccel_deps="vdpau"
1973 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1974 mpeg4_crystalhd_decoder_select="crystalhd"
1975 mpeg4_vaapi_hwaccel_deps="vaapi"
1976 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1977 mpeg4_vdpau_decoder_deps="vdpau"
1978 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1979 mpeg4_vdpau_hwaccel_deps="vdpau"
1980 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1981 msmpeg4_crystalhd_decoder_select="crystalhd"
1982 vc1_crystalhd_decoder_select="crystalhd"
1983 vc1_dxva2_hwaccel_deps="dxva2"
1984 vc1_dxva2_hwaccel_select="vc1_decoder"
1985 vc1_vaapi_hwaccel_deps="vaapi"
1986 vc1_vaapi_hwaccel_select="vc1_decoder"
1987 vc1_vdpau_decoder_deps="vdpau"
1988 vc1_vdpau_decoder_select="vc1_decoder"
1989 vc1_vdpau_hwaccel_deps="vdpau"
1990 vc1_vdpau_hwaccel_select="vc1_decoder"
1991 wmv3_crystalhd_decoder_select="crystalhd"
1992 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1993 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1994 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1995 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1996
1997 # parsers
1998 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1999 mpeg4video_parser_select="error_resilience mpegvideo"
2000 mpegvideo_parser_select="error_resilience mpegvideo"
2001 vc1_parser_select="mpegvideo"
2002
2003 # external libraries
2004 libaacplus_encoder_deps="libaacplus"
2005 libcelt_decoder_deps="libcelt"
2006 libfaac_encoder_deps="libfaac"
2007 libfaac_encoder_select="audio_frame_queue"
2008 libfdk_aac_decoder_deps="libfdk_aac"
2009 libfdk_aac_encoder_deps="libfdk_aac"
2010 libfdk_aac_encoder_select="audio_frame_queue"
2011 libgme_demuxer_deps="libgme"
2012 libgsm_decoder_deps="libgsm"
2013 libgsm_encoder_deps="libgsm"
2014 libgsm_ms_decoder_deps="libgsm"
2015 libgsm_ms_encoder_deps="libgsm"
2016 libilbc_decoder_deps="libilbc"
2017 libilbc_encoder_deps="libilbc"
2018 libmodplug_demuxer_deps="libmodplug"
2019 libmp3lame_encoder_deps="libmp3lame"
2020 libmp3lame_encoder_select="audio_frame_queue"
2021 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2022 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2023 libopencore_amrnb_encoder_select="audio_frame_queue"
2024 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2025 libopenjpeg_decoder_deps="libopenjpeg"
2026 libopenjpeg_encoder_deps="libopenjpeg"
2027 libopus_decoder_deps="libopus"
2028 libopus_encoder_deps="libopus"
2029 libopus_encoder_select="audio_frame_queue"
2030 libquvi_demuxer_deps="libquvi"
2031 libschroedinger_decoder_deps="libschroedinger"
2032 libschroedinger_encoder_deps="libschroedinger"
2033 libshine_encoder_deps="libshine"
2034 libshine_encoder_select="audio_frame_queue"
2035 libspeex_decoder_deps="libspeex"
2036 libspeex_encoder_deps="libspeex"
2037 libspeex_encoder_select="audio_frame_queue"
2038 libstagefright_h264_decoder_deps="libstagefright_h264"
2039 libtheora_encoder_deps="libtheora"
2040 libtwolame_encoder_deps="libtwolame"
2041 libvo_aacenc_encoder_deps="libvo_aacenc"
2042 libvo_aacenc_encoder_select="audio_frame_queue"
2043 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2044 libvorbis_decoder_deps="libvorbis"
2045 libvorbis_encoder_deps="libvorbis"
2046 libvorbis_encoder_select="audio_frame_queue"
2047 libvpx_vp8_decoder_deps="libvpx"
2048 libvpx_vp8_encoder_deps="libvpx"
2049 libvpx_vp9_decoder_deps="libvpx"
2050 libvpx_vp9_encoder_deps="libvpx"
2051 libwavpack_encoder_deps="libwavpack"
2052 libx264_encoder_deps="libx264"
2053 libx264rgb_encoder_deps="libx264"
2054 libxavs_encoder_deps="libxavs"
2055 libxvid_encoder_deps="libxvid"
2056 libutvideo_decoder_deps="libutvideo"
2057 libutvideo_encoder_deps="libutvideo"
2058 libzvbi_teletext_decoder_deps="libzvbi"
2059
2060 # demuxers / muxers
2061 ac3_demuxer_select="ac3_parser"
2062 asf_demuxer_select="riffdec"
2063 asf_muxer_select="riffenc"
2064 asf_stream_muxer_select="asf_muxer"
2065 avi_demuxer_select="riffdec"
2066 avi_muxer_select="riffenc"
2067 avisynth_demuxer_deps="avisynth"
2068 avisynth_demuxer_select="riffdec"
2069 caf_demuxer_select="riffdec"
2070 dirac_demuxer_select="dirac_parser"
2071 dts_demuxer_select="dca_parser"
2072 dtshd_demuxer_select="dca_parser"
2073 dxa_demuxer_select="riffdec"
2074 eac3_demuxer_select="ac3_parser"
2075 f4v_muxer_select="mov_muxer"
2076 flac_demuxer_select="flac_parser"
2077 hls_muxer_select="mpegts_muxer"
2078 ipod_muxer_select="mov_muxer"
2079 ismv_muxer_select="mov_muxer"
2080 libnut_demuxer_deps="libnut"
2081 libnut_muxer_deps="libnut"
2082 matroska_audio_muxer_select="matroska_muxer"
2083 matroska_demuxer_select="riffdec"
2084 matroska_demuxer_suggest="bzlib lzo zlib"
2085 matroska_muxer_select="riffenc"
2086 mmf_muxer_select="riffenc"
2087 mov_demuxer_select="riffdec"
2088 mov_demuxer_suggest="zlib"
2089 mov_muxer_select="riffenc rtpenc_chain"
2090 mp3_demuxer_select="mpegaudio_parser"
2091 mp4_muxer_select="mov_muxer"
2092 mpegts_muxer_select="adts_muxer latm_muxer"
2093 mpegtsraw_demuxer_select="mpegts_demuxer"
2094 mxf_d10_muxer_select="mxf_muxer"
2095 nut_muxer_select="riffenc"
2096 nuv_demuxer_select="riffdec"
2097 ogg_demuxer_select="golomb"
2098 psp_muxer_select="mov_muxer"
2099 rtp_demuxer_select="sdp_demuxer"
2100 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2101 rtsp_demuxer_select="http_protocol rtpdec"
2102 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2103 sap_demuxer_select="sdp_demuxer"
2104 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2105 sdp_demuxer_select="rtpdec"
2106 smoothstreaming_muxer_select="ismv_muxer"
2107 spdif_muxer_select="aac_parser"
2108 tak_demuxer_select="tak_parser"
2109 tg2_muxer_select="mov_muxer"
2110 tgp_muxer_select="mov_muxer"
2111 vobsub_demuxer_select="mpegps_demuxer"
2112 w64_demuxer_select="wav_demuxer"
2113 w64_muxer_select="wav_muxer"
2114 wav_demuxer_select="riffdec"
2115 wav_muxer_select="riffenc"
2116 webm_muxer_select="riffenc"
2117 wtv_demuxer_select="riffdec"
2118 xmv_demuxer_select="riffdec"
2119 xwma_demuxer_select="riffdec"
2120
2121 # indevs / outdevs
2122 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2123 alsa_outdev_deps="alsa_asoundlib_h"
2124 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2125 caca_outdev_deps="libcaca"
2126 dshow_indev_deps="IBaseFilter"
2127 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2128 dv1394_indev_deps="dv1394"
2129 dv1394_indev_select="dv_demuxer"
2130 fbdev_indev_deps="linux_fb_h"
2131 fbdev_outdev_deps="linux_fb_h"
2132 iec61883_indev_deps="libiec61883"
2133 jack_indev_deps="jack_jack_h sem_timedwait"
2134 lavfi_indev_deps="avfilter"
2135 libcdio_indev_deps="libcdio"
2136 libdc1394_indev_deps="libdc1394"
2137 libv4l2_indev_deps="libv4l2"
2138 openal_indev_deps="openal"
2139 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2140 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2141 pulse_indev_deps="libpulse"
2142 pulse_outdev_deps="libpulse"
2143 sdl_outdev_deps="sdl"
2144 sndio_indev_deps="sndio_h"
2145 sndio_outdev_deps="sndio_h"
2146 v4l_indev_deps="linux_videodev_h"
2147 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2148 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2149 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2150 vfwcap_indev_extralibs="-lavicap32"
2151 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2152 xv_outdev_extralibs="-lXv -lX11 -lXext"
2153 x11grab_indev_deps="x11grab"
2154
2155 # protocols
2156 bluray_protocol_deps="libbluray"
2157 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2158 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2159 ffrtmpcrypt_protocol_select="tcp_protocol"
2160 ffrtmphttp_protocol_deps="!librtmp_protocol"
2161 ffrtmphttp_protocol_select="http_protocol"
2162 ftp_protocol_select="tcp_protocol"
2163 gopher_protocol_select="network"
2164 httpproxy_protocol_select="tcp_protocol"
2165 http_protocol_select="tcp_protocol"
2166 https_protocol_select="tls_protocol"
2167 librtmp_protocol_deps="librtmp"
2168 librtmpe_protocol_deps="librtmp"
2169 librtmps_protocol_deps="librtmp"
2170 librtmpt_protocol_deps="librtmp"
2171 librtmpte_protocol_deps="librtmp"
2172 libssh_protocol_deps="libssh"
2173 mmsh_protocol_select="http_protocol"
2174 mmst_protocol_select="network"
2175 rtmp_protocol_deps="!librtmp_protocol"
2176 rtmp_protocol_select="tcp_protocol"
2177 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2178 rtmps_protocol_deps="!librtmp_protocol"
2179 rtmps_protocol_select="tls_protocol"
2180 rtmpt_protocol_select="ffrtmphttp_protocol"
2181 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2182 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2183 rtp_protocol_select="udp_protocol"
2184 sctp_protocol_deps="struct_sctp_event_subscribe"
2185 sctp_protocol_select="network"
2186 srtp_protocol_select="rtp_protocol"
2187 tcp_protocol_select="network"
2188 tls_protocol_deps_any="openssl gnutls"
2189 tls_protocol_select="tcp_protocol"
2190 udp_protocol_select="network"
2191 unix_protocol_deps="sys_un_h"
2192 unix_protocol_select="network"
2193
2194 # filters
2195 aconvert_filter_deps="swresample"
2196 amovie_filter_deps="avcodec avformat"
2197 aresample_filter_deps="swresample"
2198 ass_filter_deps="libass"
2199 asyncts_filter_deps="avresample"
2200 atempo_filter_deps="avcodec"
2201 atempo_filter_select="rdft"
2202 azmq_filter_deps="libzmq"
2203 blackframe_filter_deps="gpl"
2204 boxblur_filter_deps="gpl"
2205 colormatrix_filter_deps="gpl"
2206 cropdetect_filter_deps="gpl"
2207 dctdnoiz_filter_deps="avcodec"
2208 dctdnoiz_filter_select="fft"
2209 delogo_filter_deps="gpl"
2210 deshake_filter_deps="avcodec"
2211 deshake_filter_select="dsputil"
2212 drawtext_filter_deps="libfreetype"
2213 ebur128_filter_deps="gpl"
2214 flite_filter_deps="libflite"
2215 frei0r_filter_deps="frei0r dlopen"
2216 frei0r_filter_extralibs='$ldl'
2217 frei0r_src_filter_deps="frei0r dlopen"
2218 frei0r_src_filter_extralibs='$ldl'
2219 geq_filter_deps="gpl"
2220 histeq_filter_deps="gpl"
2221 hqdn3d_filter_deps="gpl"
2222 interlace_filter_deps="gpl"
2223 kerndeint_filter_deps="gpl"
2224 ladspa_filter_deps="ladspa dlopen"
2225 mcdeint_filter_deps="avcodec gpl"
2226 movie_filter_deps="avcodec avformat"
2227 mp_filter_deps="gpl avcodec swscale inline_asm"
2228 mpdecimate_filter_deps="gpl avcodec"
2229 mptestsrc_filter_deps="gpl"
2230 negate_filter_deps="lut_filter"
2231 perspective_filter_deps="gpl"
2232 resample_filter_deps="avresample"
2233 ocv_filter_deps="libopencv"
2234 owdenoise_filter_deps="gpl"
2235 pan_filter_deps="swresample"
2236 phase_filter_deps="gpl"
2237 pp_filter_deps="gpl postproc"
2238 pullup_filter_deps="gpl"
2239 removelogo_filter_deps="avcodec avformat swscale"
2240 sab_filter_deps="gpl swscale"
2241 scale_filter_deps="swscale"
2242 smartblur_filter_deps="gpl swscale"
2243 showspectrum_filter_deps="avcodec"
2244 showspectrum_filter_select="rdft"
2245 spp_filter_deps="gpl avcodec"
2246 spp_filter_select="fft"
2247 stereo3d_filter_deps="gpl"
2248 subtitles_filter_deps="avformat avcodec libass"
2249 super2xsai_filter_deps="gpl"
2250 tinterlace_filter_deps="gpl"
2251 vidstabdetect_filter_deps="libvidstab"
2252 vidstabtransform_filter_deps="libvidstab"
2253 yadif_filter_deps="gpl"
2254 pixfmts_super2xsai_test_deps="super2xsai_filter"
2255 tinterlace_merge_test_deps="tinterlace_filter"
2256 tinterlace_pad_test_deps="tinterlace_filter"
2257 zmq_filter_deps="libzmq"
2258
2259 # libraries
2260 avcodec_deps="avutil"
2261 avdevice_deps="avutil avcodec avformat"
2262 avfilter_deps="avutil"
2263 avformat_deps="avutil avcodec"
2264 avresample_deps="avutil"
2265 postproc_deps="avutil gpl"
2266 swscale_deps="avutil"
2267
2268 # programs
2269 ffmpeg_deps="avcodec avfilter avformat swresample"
2270 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2271                null_filter
2272                setpts_filter trim_filter"
2273 ffplay_deps="avcodec avformat swscale swresample sdl"
2274 ffplay_select="rdft crop_filter"
2275 ffprobe_deps="avcodec avformat"
2276 ffserver_deps="avformat fork sarestart"
2277 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2278 ffserver_extralibs='$ldl'
2279
2280 # documentation
2281 podpages_deps="perl"
2282 manpages_deps="perl pod2man"
2283 htmlpages_deps="texi2html"
2284 txtpages_deps="makeinfo"
2285 doc_deps_any="manpages htmlpages podpages txtpages"
2286
2287 # default parameters
2288
2289 logfile="config.log"
2290
2291 # installation paths
2292 prefix_default="/usr/local"
2293 bindir_default='${prefix}/bin'
2294 datadir_default='${prefix}/share/ffmpeg'
2295 docdir_default='${prefix}/share/doc/ffmpeg'
2296 incdir_default='${prefix}/include'
2297 libdir_default='${prefix}/lib'
2298 mandir_default='${prefix}/share/man'
2299 shlibdir_default="$libdir_default"
2300
2301 # toolchain
2302 ar_default="ar"
2303 cc_default="gcc"
2304 cxx_default="g++"
2305 host_cc_default="gcc"
2306 cp_f="cp -f"
2307 install="install"
2308 ln_s="ln -s -f"
2309 nm_default="nm -g"
2310 objformat="elf"
2311 pkg_config_default=pkg-config
2312 ranlib="ranlib"
2313 strip_default="strip"
2314 yasmexe_default="yasm"
2315
2316 nogas=":"
2317
2318 # machine
2319 arch_default=$(uname -m)
2320 cpu="generic"
2321
2322 # OS
2323 target_os_default=$(tolower $(uname -s))
2324 host_os=$target_os_default
2325
2326 # configurable options
2327 enable $PROGRAM_LIST
2328 enable $DOCUMENT_LIST
2329 enable $(filter_out avresample $LIBRARY_LIST)
2330 enable stripping
2331
2332 enable asm
2333 enable debug
2334 enable doc
2335 enable optimizations
2336 enable runtime_cpudetect
2337 enable safe_bitstream_reader
2338 enable static
2339 enable swscale_alpha
2340
2341 # Enable hwaccels by default.
2342 enable dxva2 vaapi vdpau
2343
2344 # build settings
2345 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2346 LIBPREF="lib"
2347 LIBSUF=".a"
2348 FULLNAME='$(NAME)$(BUILDSUF)'
2349 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2350 SLIBPREF="lib"
2351 SLIBSUF=".so"
2352 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2353 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2354 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2355 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2356 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2357 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2358
2359 asflags_filter=echo
2360 cflags_filter=echo
2361 ldflags_filter=echo
2362
2363 AS_C='-c'
2364 AS_O='-o $@'
2365 CC_C='-c'
2366 CC_E='-E -o $@'
2367 CC_O='-o $@'
2368 CXX_C='-c'
2369 CXX_O='-o $@'
2370 LD_O='-o $@'
2371 LD_LIB='-l%'
2372 LD_PATH='-L'
2373 HOSTCC_C='-c'
2374 HOSTCC_O='-o $@'
2375 HOSTLD_O='-o $@'
2376
2377 host_cflags='-O3 -g'
2378 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2379 host_libs='-lm'
2380 host_cflags_filter=echo
2381 host_ldflags_filter=echo
2382
2383 target_path='$(CURDIR)'
2384
2385 # since the object filename is not given with the -MM flag, the compiler
2386 # is only able to print the basename, and we must add the path ourselves
2387 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2388 DEPFLAGS='-MM'
2389
2390 # find source path
2391 if test -f configure; then
2392     source_path=.
2393 else
2394     source_path=$(cd $(dirname "$0"); pwd)
2395     echo "$source_path" | grep -q '[[:blank:]]' &&
2396         die "Out of tree builds are impossible with whitespace in source path."
2397     test -e "$source_path/config.h" &&
2398         die "Out of tree builds are impossible with config.h in source dir."
2399 fi
2400
2401 for v in "$@"; do
2402     r=${v#*=}
2403     l=${v%"$r"}
2404     r=$(sh_quote "$r")
2405     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2406 done
2407
2408 find_things(){
2409     thing=$1
2410     pattern=$2
2411     file=$source_path/$3
2412     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2413 }
2414
2415 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2416 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2417 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2418 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2419 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2420 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2421 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2422 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2423 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2424 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2425 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2426
2427 ALL_COMPONENTS="
2428     $BSF_LIST
2429     $DECODER_LIST
2430     $DEMUXER_LIST
2431     $ENCODER_LIST
2432     $FILTER_LIST
2433     $HWACCEL_LIST
2434     $INDEV_LIST
2435     $MUXER_LIST
2436     $OUTDEV_LIST
2437     $PARSER_LIST
2438     $PROTOCOL_LIST
2439 "
2440
2441 for n in $COMPONENT_LIST; do
2442     v=$(toupper ${n%s})_LIST
2443     eval enable \$$v
2444     eval ${n}_if_any="\$$v"
2445 done
2446
2447 enable $ARCH_EXT_LIST
2448
2449 die_unknown(){
2450     echo "Unknown option \"$1\"."
2451     echo "See $0 --help for available options."
2452     exit 1
2453 }
2454
2455 print_3_columns() {
2456     cat | tr ' ' '\n' | sort | pr -r -3 -t
2457 }
2458
2459 show_list() {
2460     suffix=_$1
2461     shift
2462     echo $* | sed s/$suffix//g | print_3_columns
2463     exit 0
2464 }
2465
2466 rand_list(){
2467     IFS=', '
2468     set -- $*
2469     unset IFS
2470     for thing; do
2471         comp=${thing%:*}
2472         prob=${thing#$comp}
2473         prob=${prob#:}
2474         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2475         echo "prob ${prob:-0.5}"
2476         printf '%s\n' $comp
2477     done
2478 }
2479
2480 do_random(){
2481     action=$1
2482     shift
2483     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2484     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2485 }
2486
2487 for opt do
2488     optval="${opt#*=}"
2489     case "$opt" in
2490         --extra-ldflags=*)
2491             add_ldflags $optval
2492         ;;
2493         --extra-libs=*)
2494             add_extralibs $optval
2495         ;;
2496         --disable-devices)
2497             disable $INDEV_LIST $OUTDEV_LIST
2498         ;;
2499         --enable-debug=*)
2500             debuglevel="$optval"
2501         ;;
2502         --disable-programs)
2503             disable $PROGRAM_LIST
2504         ;;
2505         --disable-everything)
2506             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2507         ;;
2508         --disable-all)
2509             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2510             disable $LIBRARY_LIST $PROGRAM_LIST doc
2511         ;;
2512         --enable-random|--disable-random)
2513             action=${opt%%-random}
2514             do_random ${action#--} $COMPONENT_LIST
2515         ;;
2516         --enable-random=*|--disable-random=*)
2517             action=${opt%%-random=*}
2518             do_random ${action#--} $optval
2519         ;;
2520         --enable-*=*|--disable-*=*)
2521             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2522             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2523             eval list=\$$(toupper $thing)_LIST
2524             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2525             list=$(filter "$name" $list)
2526             [ "$list" = "" ] && warn "Option $opt did not match anything"
2527             $action $list
2528         ;;
2529         --enable-?*|--disable-?*)
2530             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2531             if is_in $option $COMPONENT_LIST; then
2532                 test $action = disable && action=unset
2533                 eval $action \$$(toupper ${option%s})_LIST
2534             elif is_in $option $CMDLINE_SELECT; then
2535                 $action $option
2536             else
2537                 die_unknown $opt
2538             fi
2539         ;;
2540         --list-*)
2541             NAME="${opt#--list-}"
2542             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2543             NAME=${NAME%s}
2544             eval show_list $NAME \$$(toupper $NAME)_LIST
2545         ;;
2546         --help|-h) show_help
2547         ;;
2548         --fatal-warnings) enable fatal_warnings
2549         ;;
2550         *)
2551             optname="${opt%%=*}"
2552             optname="${optname#--}"
2553             optname=$(echo "$optname" | sed 's/-/_/g')
2554             if is_in $optname $CMDLINE_SET; then
2555                 eval $optname='$optval'
2556             elif is_in $optname $CMDLINE_APPEND; then
2557                 append $optname "$optval"
2558             else
2559                 die_unknown $opt
2560             fi
2561         ;;
2562     esac
2563 done
2564
2565 disabled logging && logfile=/dev/null
2566
2567 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2568 set >> $logfile
2569
2570 test -n "$cross_prefix" && enable cross_compile
2571
2572 if enabled cross_compile; then
2573     test -n "$arch" && test -n "$target_os" ||
2574         die "Must specify target arch and OS when cross-compiling"
2575 fi
2576
2577 ar_default="${cross_prefix}${ar_default}"
2578 cc_default="${cross_prefix}${cc_default}"
2579 cxx_default="${cross_prefix}${cxx_default}"
2580 nm_default="${cross_prefix}${nm_default}"
2581 pkg_config_default="${cross_prefix}${pkg_config_default}"
2582 ranlib="${cross_prefix}${ranlib}"
2583 strip_default="${cross_prefix}${strip_default}"
2584
2585 sysinclude_default="${sysroot}/usr/include"
2586
2587 test -n "$valgrind" && toolchain="valgrind-memcheck"
2588
2589 case "$toolchain" in
2590     clang-asan)
2591         cc_default="clang"
2592         add_cflags  -fsanitize=address
2593         add_ldflags -fsanitize=address
2594     ;;
2595     clang-tsan)
2596         cc_default="clang"
2597         add_cflags  -fsanitize=thread -pie
2598         add_ldflags -fsanitize=thread -pie
2599     ;;
2600     gcc-asan)
2601         cc_default="gcc"
2602         add_cflags  -fsanitize=address
2603         add_ldflags -fsanitize=address
2604     ;;
2605     gcc-tsan)
2606         cc_default="gcc"
2607         add_cflags  -fsanitize=thread -pie -fPIC
2608         add_ldflags -fsanitize=thread -pie -fPIC
2609     ;;
2610     valgrind-massif)
2611         target_exec_default=${valgrind:-"valgrind"}
2612         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"
2613     ;;
2614     valgrind-memcheck)
2615         target_exec_default=${valgrind:-"valgrind"}
2616         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2617     ;;
2618     msvc)
2619         cc_default="c99wrap cl"
2620         ld_default="c99wrap link"
2621         nm_default="dumpbin -symbols"
2622         ar_default="lib"
2623         target_os_default="win32"
2624     ;;
2625     icl)
2626         cc_default="c99wrap -noconv icl"
2627         ld_default="c99wrap xilink"
2628         nm_default="dumpbin -symbols"
2629         ar_default="xilib"
2630         target_os_default="win32"
2631     ;;
2632     gcov)
2633         add_cflags  -fprofile-arcs -ftest-coverage
2634         add_ldflags -fprofile-arcs -ftest-coverage
2635     ;;
2636     hardened)
2637         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2638         add_ldflags -Wl,-z,relro -Wl,-z,now
2639     ;;
2640     ?*)
2641         die "Unknown toolchain $toolchain"
2642     ;;
2643 esac
2644
2645 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2646 enabled cross_compile || host_cc_default=$cc
2647 set_default host_cc
2648
2649 if ! $pkg_config --version >/dev/null 2>&1; then
2650     warn "$pkg_config not found, library detection may fail."
2651     pkg_config=false
2652 fi
2653
2654 exesuf() {
2655     case $1 in
2656         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2657     esac
2658 }
2659
2660 EXESUF=$(exesuf $target_os)
2661 HOSTEXESUF=$(exesuf $host_os)
2662
2663 # set temporary file name
2664 : ${TMPDIR:=$TEMPDIR}
2665 : ${TMPDIR:=$TMP}
2666 : ${TMPDIR:=/tmp}
2667
2668 if [ -n "$tempprefix" ] ; then
2669     mktemp(){
2670         echo $tempprefix.${HOSTNAME}.${UID}
2671     }
2672 elif ! check_cmd mktemp -u XXXXXX; then
2673     # simple replacement for missing mktemp
2674     # NOT SAFE FOR GENERAL USE
2675     mktemp(){
2676         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2677     }
2678 fi
2679
2680 tmpfile(){
2681     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2682         (set -C; exec > $tmp) 2>/dev/null ||
2683         die "Unable to create temporary file in $TMPDIR."
2684     append TMPFILES $tmp
2685     eval $1=$tmp
2686 }
2687
2688 trap 'rm -f -- $TMPFILES' EXIT
2689
2690 tmpfile TMPASM .asm
2691 tmpfile TMPC   .c
2692 tmpfile TMPCPP .cpp
2693 tmpfile TMPE   $EXESUF
2694 tmpfile TMPH   .h
2695 tmpfile TMPO   .o
2696 tmpfile TMPS   .S
2697 tmpfile TMPSH  .sh
2698 tmpfile TMPV   .ver
2699
2700 unset -f mktemp
2701
2702 chmod +x $TMPE
2703
2704 # make sure we can execute files in $TMPDIR
2705 cat > $TMPSH 2>> $logfile <<EOF
2706 #! /bin/sh
2707 EOF
2708 chmod +x $TMPSH >> $logfile 2>&1
2709 if ! $TMPSH >> $logfile 2>&1; then
2710     cat <<EOF
2711 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2712 variable to another directory and make sure that it is not mounted noexec.
2713 EOF
2714     die "Sanity test failed."
2715 fi
2716
2717 ccc_flags(){
2718     for flag; do
2719         case $flag in
2720             -std=c99)           echo -c99                       ;;
2721             -mcpu=*)            echo -arch ${flag#*=}           ;;
2722             -mieee)             echo -ieee                      ;;
2723             -O*|-fast)          echo $flag                      ;;
2724             -fno-math-errno)    echo -assume nomath_errno       ;;
2725             -g)                 echo -g3                        ;;
2726             -Wall)              echo -msg_enable level2         ;;
2727             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2728             -Wl,*)              echo $flag                      ;;
2729             -f*|-W*)                                            ;;
2730             *)                  echo $flag                      ;;
2731         esac
2732    done
2733 }
2734
2735 cparser_flags(){
2736     for flag; do
2737         case $flag in
2738             -Wno-switch)             echo -Wno-switch-enum ;;
2739             -Wno-format-zero-length) ;;
2740             -Wdisabled-optimization) ;;
2741             -Wno-pointer-sign)       echo -Wno-other ;;
2742             *)                       echo $flag ;;
2743         esac
2744     done
2745 }
2746
2747 msvc_common_flags(){
2748     for flag; do
2749         case $flag in
2750             # In addition to specifying certain flags under the compiler
2751             # specific filters, they must be specified here as well or else the
2752             # generic catch all at the bottom will print the original flag.
2753             -Wall)                ;;
2754             -std=c99)             ;;
2755             # Common flags
2756             -fomit-frame-pointer) ;;
2757             -g)                   echo -Z7 ;;
2758             -fno-math-errno)      ;;
2759             -fno-common)          ;;
2760             -fno-signed-zeros)    ;;
2761             -fPIC)                ;;
2762             -mthumb)              ;;
2763             -march=*)             ;;
2764             -lz)                  echo zlib.lib ;;
2765             -lavifil32)           echo vfw32.lib ;;
2766             -lavicap32)           echo vfw32.lib user32.lib ;;
2767             -l*)                  echo ${flag#-l}.lib ;;
2768             *)                    echo $flag ;;
2769         esac
2770     done
2771 }
2772
2773 msvc_flags(){
2774     msvc_common_flags "$@"
2775     for flag; do
2776         case $flag in
2777             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2778                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2779                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2780                                        -wd4554 \
2781                                        -wd4273 ;;
2782         esac
2783     done
2784 }
2785
2786 icl_flags(){
2787     msvc_common_flags "$@"
2788     for flag; do
2789         case $flag in
2790             # Despite what Intel's documentation says -Wall, which is supported
2791             # on Windows, does enable remarks so disable them here.
2792             -Wall)                echo $flag -Qdiag-disable:remark ;;
2793             -std=c99)             echo -Qstd=c99 ;;
2794         esac
2795     done
2796 }
2797
2798 pgi_flags(){
2799     for flag; do
2800         case $flag in
2801             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2802             -fomit-frame-pointer) echo -Mnoframe ;;
2803             -g)                   echo -gopt ;;
2804             *)                    echo $flag ;;
2805         esac
2806     done
2807 }
2808
2809 suncc_flags(){
2810     for flag; do
2811         case $flag in
2812             -march=*|-mcpu=*)
2813                 case "${flag#*=}" in
2814                     native)                   echo -xtarget=native       ;;
2815                     v9|niagara)               echo -xarch=sparc          ;;
2816                     ultrasparc)               echo -xarch=sparcvis       ;;
2817                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2818                     i586|pentium)             echo -xchip=pentium        ;;
2819                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2820                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2821                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2822                     pentium4*)          echo -xtarget=pentium4           ;;
2823                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2824                     *-sse3)             echo -xarch=sse3                 ;;
2825                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2826                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2827                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2828                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2829                     bdver*)                    echo -xarch=avx           ;;
2830                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2831                     k8|opteron|athlon64|athlon-fx)
2832                                                echo -xarch=sse2a         ;;
2833                     athlon*)                   echo -xarch=pentium_proa  ;;
2834                 esac
2835                 ;;
2836             -std=c99)             echo -xc99              ;;
2837             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2838             -fPIC)                echo -KPIC -xcode=pic32 ;;
2839             -W*,*)                echo $flag              ;;
2840             -f*-*|-W*|-mimpure-text)                      ;;
2841             -shared)              echo -G                 ;;
2842             *)                    echo $flag              ;;
2843         esac
2844     done
2845 }
2846
2847 tms470_flags(){
2848     for flag; do
2849         case $flag in
2850             -march=*|-mcpu=*)
2851                 case "${flag#*=}" in
2852                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2853                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2854                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2855                     armv6*|arm11*)          echo -mv=6   ;;
2856                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2857                                             echo -mv=5e  ;;
2858                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2859                 esac
2860                 ;;
2861             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2862             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2863             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2864             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2865             -msoft-float)   echo --float_support=vfplib       ;;
2866             -O[0-3]|-mf=*)  echo $flag                        ;;
2867             -g)             echo -g -mn                       ;;
2868             -pds=*)         echo $flag                        ;;
2869             -D*|-I*)        echo $flag                        ;;
2870             --gcc|--abi=*)  echo $flag                        ;;
2871             -me)            echo $flag                        ;;
2872         esac
2873     done
2874 }
2875
2876 probe_cc(){
2877     pfx=$1
2878     _cc=$2
2879
2880     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2881     unset _ld_o _ldflags _ld_lib _ld_path
2882     unset _depflags _DEPCMD _DEPFLAGS
2883     _flags_filter=echo
2884
2885     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2886         _type=llvm_gcc
2887         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2888         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2889         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2890         _cflags_speed='-O3'
2891         _cflags_size='-Os'
2892     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2893         _type=gcc
2894         gcc_version=$($_cc --version | head -n1)
2895         gcc_basever=$($_cc -dumpversion)
2896         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2897         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2898         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2899         if ! $_cc -dumpversion | grep -q '^2\.'; then
2900             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2901         fi
2902         _cflags_speed='-O3'
2903         _cflags_size='-Os'
2904     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2905         _type=icc
2906         _ident=$($_cc --version | head -n1)
2907         _depflags='-MMD'
2908         _cflags_speed='-O3'
2909         _cflags_size='-Os'
2910         _cflags_noopt='-O1'
2911     elif $_cc -v 2>&1 | grep -q xlc; then
2912         _type=xlc
2913         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2914         _cflags_speed='-O5'
2915         _cflags_size='-O5 -qcompact'
2916     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2917         _type=ccc
2918         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2919         _DEPFLAGS='-M'
2920         _cflags_speed='-fast'
2921         _cflags_size='-O1'
2922         _flags_filter=ccc_flags
2923     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2924         test -d "$sysroot" || die "No valid sysroot specified."
2925         _type=armcc
2926         _ident=$($_cc --vsn | head -n1)
2927         armcc_conf="$PWD/armcc.conf"
2928         $_cc --arm_linux_configure                 \
2929              --arm_linux_config_file="$armcc_conf" \
2930              --configure_sysroot="$sysroot"        \
2931              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2932              die "Error creating armcc configuration file."
2933         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2934         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2935         as_default="${cross_prefix}gcc"
2936         _depflags='-MMD'
2937         _cflags_speed='-O3'
2938         _cflags_size='-Os'
2939     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2940         _type=tms470
2941         _ident=$($_cc -version | head -n1 | tr -s ' ')
2942         _flags='--gcc --abi=eabi -me'
2943         _cc_e='-ppl -fe=$@'
2944         _cc_o='-fe=$@'
2945         _depflags='-ppa -ppd=$(@:.o=.d)'
2946         _cflags_speed='-O3 -mf=5'
2947         _cflags_size='-O3 -mf=2'
2948         _flags_filter=tms470_flags
2949     elif $_cc -v 2>&1 | grep -q clang; then
2950         _type=clang
2951         _ident=$($_cc --version | head -n1)
2952         _depflags='-MMD'
2953         _cflags_speed='-O3'
2954         _cflags_size='-Os'
2955     elif $_cc -V 2>&1 | grep -q Sun; then
2956         _type=suncc
2957         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2958         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2959         _DEPFLAGS='-xM1 -xc99'
2960         _ldflags='-std=c99'
2961         _cflags_speed='-O5'
2962         _cflags_size='-O5 -xspace'
2963         _flags_filter=suncc_flags
2964     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2965         _type=pathscale
2966         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2967         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2968         _cflags_speed='-O2'
2969         _cflags_size='-Os'
2970         _flags_filter='filter_out -Wdisabled-optimization'
2971     elif $_cc -v 2>&1 | grep -q Open64; then
2972         _type=open64
2973         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2974         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2975         _cflags_speed='-O2'
2976         _cflags_size='-Os'
2977         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2978     elif $_cc -V 2>&1 | grep -q Portland; then
2979         _type=pgi
2980         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2981         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2982         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2983         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2984         _cflags_noopt="-O"
2985         _flags_filter=pgi_flags
2986     elif $_cc 2>&1 | grep -q Microsoft; then
2987         _type=msvc
2988         _ident=$($cc 2>&1 | head -n1)
2989         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2990         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2991         _cflags_speed="-O2"
2992         _cflags_size="-O1"
2993         # Nonstandard output options, to avoid msys path conversion issues.
2994         # Relies on wrapper to remap it.
2995         if $_cc 2>&1 | grep -q Linker; then
2996             _ld_o='-out $@'
2997         else
2998             _ld_o='-Fe$@'
2999         fi
3000         _cc_o='-Fo $@'
3001         _cc_e='-P -Fi $@'
3002         _flags_filter=msvc_flags
3003         _ld_lib='lib%.a'
3004         _ld_path='-libpath:'
3005         _flags='-nologo'
3006         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3007         if [ $pfx = hostcc ]; then
3008             append _cflags -Dsnprintf=_snprintf
3009         fi
3010         disable stripping
3011     elif $_cc 2>&1 | grep -q Intel; then
3012         _type=icl
3013         _ident=$($cc 2>&1 | head -n1)
3014         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3015         # Not only is O3 broken on 13.x+ but it is slower on all previous
3016         # versions (tested) as well.
3017         _cflags_speed="-O2"
3018         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3019         # Nonstandard output options, to avoid msys path conversion issues.
3020         # Relies on wrapper to remap it.
3021         if $_cc 2>&1 | grep -q Linker; then
3022             _ld_o='-out $@'
3023         else
3024             _ld_o='-Fe$@'
3025         fi
3026         _cc_o='-Fo $@'
3027         _cc_e='-P'
3028         _flags_filter=icl_flags
3029         _ld_lib='lib%.a'
3030         _ld_path='-libpath:'
3031         # -Qdiag-error to make icl error when seeing certain unknown arguments
3032         _flags='-nologo -Qdiag-error:4044,10157'
3033         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3034         # with MSVC which enables it by default.
3035         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3036         if [ $pfx = hostcc ]; then
3037             append _cflags -Dsnprintf=_snprintf
3038         fi
3039     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3040         _type=cparser
3041         _ident=$($_cc --version | head -n1)
3042         _depflags='-MMD'
3043         _cflags_speed='-O4'
3044         _cflags_size='-O2'
3045         _flags_filter=cparser_flags
3046     fi
3047
3048     eval ${pfx}_type=\$_type
3049     eval ${pfx}_ident=\$_ident
3050 }
3051
3052 set_ccvars(){
3053     eval ${1}_C=\${_cc_c-\${${1}_C}}
3054     eval ${1}_E=\${_cc_e-\${${1}_E}}
3055     eval ${1}_O=\${_cc_o-\${${1}_O}}
3056
3057     if [ -n "$_depflags" ]; then
3058         eval ${1}_DEPFLAGS=\$_depflags
3059     else
3060         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3061         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3062         eval DEP${1}FLAGS=\$_flags
3063     fi
3064 }
3065
3066 probe_cc cc "$cc"
3067 cflags_filter=$_flags_filter
3068 cflags_speed=$_cflags_speed
3069 cflags_size=$_cflags_size
3070 cflags_noopt=$_cflags_noopt
3071 add_cflags $_flags $_cflags
3072 cc_ldflags=$_ldflags
3073 set_ccvars CC
3074
3075 probe_cc hostcc "$host_cc"
3076 host_cflags_filter=$_flags_filter
3077 add_host_cflags  $_flags $_cflags
3078 set_ccvars HOSTCC
3079
3080 test -n "$cc_type" && enable $cc_type ||
3081     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3082
3083 : ${as_default:=$cc}
3084 : ${dep_cc_default:=$cc}
3085 : ${ld_default:=$cc}
3086 : ${host_ld_default:=$host_cc}
3087 set_default ar as dep_cc ld host_ld
3088
3089 probe_cc as "$as"
3090 asflags_filter=$_flags_filter
3091 add_asflags $_flags $_cflags
3092 set_ccvars AS
3093
3094 probe_cc ld "$ld"
3095 ldflags_filter=$_flags_filter
3096 add_ldflags $_flags $_ldflags
3097 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3098 LD_O=${_ld_o-$LD_O}
3099 LD_LIB=${_ld_lib-$LD_LIB}
3100 LD_PATH=${_ld_path-$LD_PATH}
3101
3102 probe_cc hostld "$host_ld"
3103 host_ldflags_filter=$_flags_filter
3104 add_host_ldflags $_flags $_ldflags
3105 HOSTLD_O=${_ld_o-$HOSTLD_O}
3106
3107 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3108     probe_cc depcc "$dep_cc"
3109     CCDEP=${_DEPCMD:-$DEPCMD}
3110     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3111     DEPCCFLAGS=$_flags
3112 fi
3113
3114 if $ar 2>&1 | grep -q Microsoft; then
3115     arflags="-nologo"
3116     ar_o='-out:$@'
3117 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3118     arflags="rq"
3119     ar_o='$@'
3120 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3121     arflags='-Xany -r -c'
3122     ar_o='$@'
3123 else
3124     arflags="rc"
3125     ar_o='$@'
3126 fi
3127
3128 add_cflags $extra_cflags
3129 add_cxxflags $extra_cxxflags
3130 add_asflags $extra_cflags
3131
3132 if test -n "$sysroot"; then
3133     case "$cc_type" in
3134         gcc|llvm_gcc|clang)
3135             add_cppflags --sysroot="$sysroot"
3136             add_ldflags --sysroot="$sysroot"
3137         ;;
3138         tms470)
3139             add_cppflags -I"$sysinclude"
3140             add_ldflags  --sysroot="$sysroot"
3141         ;;
3142     esac
3143 fi
3144
3145 if test "$cpu" = host; then
3146     enabled cross_compile &&
3147         die "--cpu=host makes no sense when cross-compiling."
3148
3149     case "$cc_type" in
3150         gcc|llvm_gcc)
3151             check_native(){
3152                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3153                 sed -n "/cc1.*$1=/{
3154                             s/.*$1=\\([^ ]*\\).*/\\1/
3155                             p
3156                             q
3157                         }" $TMPE
3158             }
3159             cpu=$(check_native -march || check_native -mcpu)
3160         ;;
3161     esac
3162
3163     test "${cpu:-host}" = host &&
3164         die "--cpu=host not supported with compiler $cc"
3165 fi
3166
3167 # Deal with common $arch aliases
3168 case "$arch" in
3169     aarch64|arm64)
3170         arch="aarch64"
3171     ;;
3172     arm*|iPad*|iPhone*)
3173         arch="arm"
3174     ;;
3175     mips*|IP*)
3176         arch="mips"
3177     ;;
3178     parisc*|hppa*)
3179         arch="parisc"
3180     ;;
3181     "Power Macintosh"|ppc*|powerpc*)
3182         arch="ppc"
3183     ;;
3184     s390|s390x)
3185         arch="s390"
3186     ;;
3187     sh4|sh)
3188         arch="sh4"
3189     ;;
3190     sun4u|sparc*)
3191         arch="sparc"
3192     ;;
3193     tilegx|tile-gx)
3194         arch="tilegx"
3195     ;;
3196     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3197         arch="x86"
3198     ;;
3199 esac
3200
3201 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3202 enable $arch
3203
3204 # Add processor-specific flags
3205 if enabled aarch64; then
3206
3207     case $cpu in
3208         armv*)
3209             cpuflags="-march=$cpu"
3210         ;;
3211         *)
3212             cpuflags="-mcpu=$cpu"
3213         ;;
3214     esac
3215
3216 elif enabled alpha; then
3217
3218     cpuflags="-mcpu=$cpu"
3219
3220 elif enabled arm; then
3221
3222     check_arm_arch() {
3223         check_cpp_condition stddef.h \
3224             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3225             $cpuflags
3226     }
3227
3228     probe_arm_arch() {
3229         if   check_arm_arch 4;        then echo armv4;
3230         elif check_arm_arch 4T;       then echo armv4t;
3231         elif check_arm_arch 5;        then echo armv5;
3232         elif check_arm_arch 5E;       then echo armv5e;
3233         elif check_arm_arch 5T;       then echo armv5t;
3234         elif check_arm_arch 5TE;      then echo armv5te;
3235         elif check_arm_arch 5TEJ;     then echo armv5te;
3236         elif check_arm_arch 6;        then echo armv6;
3237         elif check_arm_arch 6J;       then echo armv6j;
3238         elif check_arm_arch 6K;       then echo armv6k;
3239         elif check_arm_arch 6Z;       then echo armv6z;
3240         elif check_arm_arch 6ZK;      then echo armv6zk;
3241         elif check_arm_arch 6T2;      then echo armv6t2;
3242         elif check_arm_arch 7;        then echo armv7;
3243         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3244         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3245         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3246         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3247         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3248         fi
3249     }
3250
3251     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3252
3253     case $cpu in
3254         armv*)
3255             cpuflags="-march=$cpu"
3256             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3257         ;;
3258         *)
3259             cpuflags="-mcpu=$cpu"
3260             case $cpu in
3261                 cortex-a*)                               subarch=armv7a  ;;
3262                 cortex-r*)                               subarch=armv7r  ;;
3263                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3264                 arm11*)                                  subarch=armv6   ;;
3265                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3266                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3267                 *)                             subarch=$(probe_arm_arch) ;;
3268             esac
3269         ;;
3270     esac
3271
3272     case "$subarch" in
3273         armv5t*)    enable fast_clz                ;;
3274         armv[6-8]*) enable fast_clz fast_unaligned ;;
3275     esac
3276
3277 elif enabled avr32; then
3278
3279     case $cpu in
3280         ap7[02]0[0-2])
3281             subarch="avr32_ap"
3282             cpuflags="-mpart=$cpu"
3283         ;;
3284         ap)
3285             subarch="avr32_ap"
3286             cpuflags="-march=$cpu"
3287         ;;
3288         uc3[ab]*)
3289             subarch="avr32_uc"
3290             cpuflags="-mcpu=$cpu"
3291         ;;
3292         uc)
3293             subarch="avr32_uc"
3294             cpuflags="-march=$cpu"
3295         ;;
3296     esac
3297
3298 elif enabled bfin; then
3299
3300     cpuflags="-mcpu=$cpu"
3301
3302 elif enabled mips; then
3303
3304     cpuflags="-march=$cpu"
3305
3306     case $cpu in
3307         24kc)
3308             disable mipsfpu
3309             disable mipsdspr1
3310             disable mipsdspr2
3311         ;;
3312         24kf*)
3313             disable mipsdspr1
3314             disable mipsdspr2
3315         ;;
3316         24kec|34kc|1004kc)
3317             disable mipsfpu
3318             disable mipsdspr2
3319         ;;
3320         24kef*|34kf*|1004kf*)
3321             disable mipsdspr2
3322         ;;
3323         74kc)
3324             disable mipsfpu
3325         ;;
3326     esac
3327
3328 elif enabled ppc; then
3329
3330     case $(tolower $cpu) in
3331         601|ppc601|powerpc601)
3332             cpuflags="-mcpu=601"
3333             disable altivec
3334         ;;
3335         603*|ppc603*|powerpc603*)
3336             cpuflags="-mcpu=603"
3337             disable altivec
3338         ;;
3339         604*|ppc604*|powerpc604*)
3340             cpuflags="-mcpu=604"
3341             disable altivec
3342         ;;
3343         g3|75*|ppc75*|powerpc75*)
3344             cpuflags="-mcpu=750"
3345             disable altivec
3346         ;;
3347         g4|745*|ppc745*|powerpc745*)
3348             cpuflags="-mcpu=7450"
3349         ;;
3350         74*|ppc74*|powerpc74*)
3351             cpuflags="-mcpu=7400"
3352         ;;
3353         g5|970|ppc970|powerpc970)
3354             cpuflags="-mcpu=970"
3355         ;;
3356         power[3-7]*)
3357             cpuflags="-mcpu=$cpu"
3358         ;;
3359         cell)
3360             cpuflags="-mcpu=cell"
3361             enable ldbrx
3362         ;;
3363         e500mc)
3364             cpuflags="-mcpu=e500mc"
3365             disable altivec
3366         ;;
3367         e500v2)
3368             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3369             disable altivec
3370         ;;
3371         e500)
3372             cpuflags="-mcpu=8540 -mhard-float"
3373             disable altivec
3374         ;;
3375     esac
3376
3377 elif enabled sparc; then
3378
3379     case $cpu in
3380         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3381             cpuflags="-mcpu=$cpu"
3382             disable vis
3383         ;;
3384         ultrasparc*|niagara[234])
3385             cpuflags="-mcpu=$cpu"
3386         ;;
3387     esac
3388
3389 elif enabled x86; then
3390
3391     case $cpu in
3392         i[345]86|pentium)
3393             cpuflags="-march=$cpu"
3394             disable mmx
3395         ;;
3396         # targets that do NOT support nopl and conditional mov (cmov)
3397         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3398             cpuflags="-march=$cpu"
3399             disable i686
3400         ;;
3401         # targets that do support nopl and conditional mov (cmov)
3402         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3403             cpuflags="-march=$cpu"
3404             enable i686
3405             enable fast_cmov
3406         ;;
3407         # targets that do support conditional mov but on which it's slow
3408         pentium4|pentium4m|prescott|nocona)
3409             cpuflags="-march=$cpu"
3410             enable i686
3411             disable fast_cmov
3412         ;;
3413     esac
3414
3415 fi
3416
3417 if [ "$cpu" != generic ]; then
3418     add_cflags  $cpuflags
3419     add_asflags $cpuflags
3420 fi
3421
3422 # compiler sanity check
3423 check_exec <<EOF
3424 int main(void){ return 0; }
3425 EOF
3426 if test "$?" != 0; then
3427     echo "$cc is unable to create an executable file."
3428     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3429         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3430         echo "Only do this if you know what cross compiling means."
3431     fi
3432     die "C compiler test failed."
3433 fi
3434
3435 add_cppflags -D_ISOC99_SOURCE
3436 add_cxxflags -D__STDC_CONSTANT_MACROS
3437 check_cflags -std=c99
3438 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3439 #include <stdlib.h>
3440 EOF
3441 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3442 #include <stdlib.h>
3443 EOF
3444
3445 check_host_cflags -std=c99
3446 check_host_cflags -Wall
3447
3448 check_64bit(){
3449     arch32=$1
3450     arch64=$2
3451     expr=$3
3452     check_code cc "" "int test[2*($expr) - 1]" &&
3453         subarch=$arch64 || subarch=$arch32
3454 }
3455
3456 case "$arch" in
3457     aarch64|alpha|ia64)
3458         spic=$shared
3459     ;;
3460     mips)
3461         check_64bit mips mips64 '_MIPS_SIM > 1'
3462         spic=$shared
3463     ;;
3464     parisc)
3465         check_64bit parisc parisc64 'sizeof(void *) > 4'
3466         spic=$shared
3467     ;;
3468     ppc)
3469         check_64bit ppc ppc64 'sizeof(void *) > 4'
3470         spic=$shared
3471     ;;
3472     sparc)
3473         check_64bit sparc sparc64 'sizeof(void *) > 4'
3474         spic=$shared
3475     ;;
3476     x86)
3477         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3478         if test "$subarch" = "x86_64"; then
3479             spic=$shared
3480         fi
3481     ;;
3482     ppc)
3483         check_cc <<EOF && subarch="ppc64"
3484         int test[(int)sizeof(char*) - 7];
3485 EOF
3486     ;;
3487 esac
3488
3489 enable $subarch
3490 enabled spic && enable_weak pic
3491
3492 # OS specific
3493 case $target_os in
3494     aix)
3495         SHFLAGS=-shared
3496         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3497         enabled shared && add_ldflags -Wl,-brtl
3498         ;;
3499     haiku)
3500         prefix_default="/boot/common"
3501         network_extralibs="-lnetwork"
3502         host_libs=
3503         ;;
3504     sunos)
3505         SHFLAGS='-shared -Wl,-h,$$(@F)'
3506         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3507         network_extralibs="-lsocket -lnsl"
3508         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3509         # When using suncc to build, the Solaris linker will mark
3510         # an executable with each instruction set encountered by
3511         # the Solaris assembler.  As our libraries contain their own
3512         # guards for processor-specific code, instead suppress
3513         # generation of the HWCAPS ELF section on Solaris x86 only.
3514         enabled_all suncc x86 &&
3515             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3516             add_ldflags -Wl,-M,mapfile
3517         nm_default='nm -P -g'
3518         ;;
3519     netbsd)
3520         disable symver
3521         oss_indev_extralibs="-lossaudio"
3522         oss_outdev_extralibs="-lossaudio"
3523         enabled gcc || check_ldflags -Wl,-zmuldefs
3524         ;;
3525     openbsd|bitrig)
3526         disable symver
3527         SHFLAGS='-shared'
3528         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3529         SLIB_INSTALL_LINKS=
3530         oss_indev_extralibs="-lossaudio"
3531         oss_outdev_extralibs="-lossaudio"
3532         ;;
3533     dragonfly)
3534         disable symver
3535         ;;
3536     freebsd)
3537         ;;
3538     bsd/os)
3539         add_extralibs -lpoll -lgnugetopt
3540         strip="strip -d"
3541         ;;
3542     darwin)
3543         gas="gas-preprocessor.pl $cc"
3544         enabled ppc && add_asflags -force_cpusubtype_ALL
3545         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3546         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3547         strip="${strip} -x"
3548         add_ldflags -Wl,-dynamic,-search_paths_first
3549         SLIBSUF=".dylib"
3550         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3551         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3552         objformat="macho"
3553         enabled x86_64 && objformat="macho64"
3554         enabled_any pic shared ||
3555             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3556         ;;
3557     mingw32*)
3558         if test $target_os = "mingw32ce"; then
3559             disable network
3560         else
3561             target_os=mingw32
3562         fi
3563         LIBTARGET=i386
3564         if enabled x86_64; then
3565             LIBTARGET="i386:x86-64"
3566         elif enabled arm; then
3567             LIBTARGET=arm-wince
3568         fi
3569         check_ldflags -Wl,--nxcompat
3570         check_ldflags -Wl,--dynamicbase
3571         shlibdir_default="$bindir_default"
3572         SLIBPREF=""
3573         SLIBSUF=".dll"
3574         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3575         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3576         dlltool="${cross_prefix}dlltool"
3577         if check_cmd lib.exe -list; then
3578             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3579             if enabled x86_64; then
3580                 LIBTARGET=x64
3581             fi
3582         elif check_cmd $dlltool --version; then
3583             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3584         fi
3585         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3586         SLIB_INSTALL_LINKS=
3587         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3588         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3589         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3590         objformat="win32"
3591         ranlib=:
3592         enable dos_paths
3593         ;;
3594     win32|win64)
3595         if enabled shared; then
3596             # Link to the import library instead of the normal static library
3597             # for shared libs.
3598             LD_LIB='%.lib'
3599             # Cannot build both shared and static libs with MSVC or icl.
3600             disable static
3601         fi
3602         shlibdir_default="$bindir_default"
3603         SLIBPREF=""
3604         SLIBSUF=".dll"
3605         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3606         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3607         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3608         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3609         SLIB_INSTALL_LINKS=
3610         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3611         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3612         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3613         objformat="win32"
3614         ranlib=:
3615         enable dos_paths
3616         ;;
3617     cygwin*)
3618         target_os=cygwin
3619         shlibdir_default="$bindir_default"
3620         SLIBPREF="cyg"
3621         SLIBSUF=".dll"
3622         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3623         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3624         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3625         SLIB_INSTALL_LINKS=
3626         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3627         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3628         objformat="win32"
3629         enable dos_paths
3630         ;;
3631     *-dos|freedos|opendos)
3632         network_extralibs="-lsocket"
3633         objformat="coff"
3634         enable dos_paths
3635         add_cppflags -U__STRICT_ANSI__
3636         ;;
3637     linux)
3638         enable dv1394
3639         ;;
3640     irix*)
3641         target_os=irix
3642         ranlib="echo ignoring ranlib"
3643         ;;
3644     os/2*)
3645         strip="lxlite -CS"
3646         ln_s="cp -f"
3647         objformat="aout"
3648         add_cppflags -D_GNU_SOURCE
3649         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3650         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3651         LIBSUF="_s.a"
3652         SLIBPREF=""
3653         SLIBSUF=".dll"
3654         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3655         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3656         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3657             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3658             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3659             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3660             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3661             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3662         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3663             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3664         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3665         enable dos_paths
3666         enable_weak os2threads
3667         ;;
3668     gnu/kfreebsd)
3669         add_cppflags -D_BSD_SOURCE
3670         ;;
3671     gnu)
3672         ;;
3673     qnx)
3674         add_cppflags -D_QNX_SOURCE
3675         network_extralibs="-lsocket"
3676         ;;
3677     symbian)
3678         SLIBSUF=".dll"
3679         enable dos_paths
3680         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3681         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3682         add_ldflags -Wl,--target1-abs,--no-undefined \
3683                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3684                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3685         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3686                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3687                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3688         ;;
3689     osf1)
3690         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3691         ;;
3692     minix)
3693         ;;
3694     plan9)
3695         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3696                      -D_REENTRANT_SOURCE        \
3697                      -D_RESEARCH_SOURCE         \
3698                      -DFD_SETSIZE=96            \
3699                      -DHAVE_SOCK_OPTS
3700         add_compat strtod.o strtod=avpriv_strtod
3701         network_extralibs='-lbsd'
3702         exeobjs=compat/plan9/main.o
3703         disable ffserver
3704         cp_f='cp'
3705         ;;
3706     none)
3707         ;;
3708     *)
3709         die "Unknown OS '$target_os'."
3710         ;;
3711 esac
3712
3713 # determine libc flavour
3714
3715 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3716 if check_cpp_condition features.h "defined __UCLIBC__"; then
3717     libc_type=uclibc
3718     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3719 elif check_cpp_condition features.h "defined __GLIBC__"; then
3720     libc_type=glibc
3721     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3722 # MinGW headers can be installed on Cygwin, so check for newlib first.
3723 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3724     libc_type=newlib
3725     add_cppflags -U__STRICT_ANSI__
3726 elif check_header _mingw.h; then
3727     libc_type=mingw
3728     check_cpp_condition _mingw.h \
3729         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3730             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3731         die "ERROR: MinGW runtime version must be >= 3.15."
3732     add_cppflags -U__STRICT_ANSI__
3733     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3734             __MINGW64_VERSION_MAJOR < 3"; then
3735         add_compat msvcrt/snprintf.o
3736         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3737     else
3738         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3739     fi
3740 elif check_func_headers stdlib.h _get_doserrno; then
3741     libc_type=msvcrt
3742     add_compat strtod.o strtod=avpriv_strtod
3743     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3744                                  _snprintf=avpriv_snprintf  \
3745                                  vsnprintf=avpriv_vsnprintf
3746     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3747     # 0x601 by default unless something else is set by the user.
3748     # This can easily lead to us detecting functions only present
3749     # in such new versions and producing binaries requiring windows 7.0.
3750     # Therefore explicitly set the default to XP unless the user has
3751     # set something else on the command line.
3752     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3753 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3754     libc_type=klibc
3755 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3756     libc_type=bionic
3757     add_compat strtod.o strtod=avpriv_strtod
3758 fi
3759
3760 test -n "$libc_type" && enable $libc_type
3761
3762 # hacks for compiler/libc/os combinations
3763
3764 if enabled_all tms470 glibc; then
3765     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3766     add_cppflags -D__USER_LABEL_PREFIX__=
3767     add_cppflags -D__builtin_memset=memset
3768     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3769     add_cflags   -pds=48    # incompatible redefinition of macro
3770 fi
3771
3772 if enabled_all ccc glibc; then
3773     add_ldflags -Wl,-z,now  # calls to libots crash without this
3774 fi
3775
3776 esc(){
3777     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3778 }
3779
3780 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3781
3782 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3783
3784 set_default $PATHS_LIST
3785 set_default nm
3786
3787 # we need to build at least one lib type
3788 if ! enabled_any static shared; then
3789     cat <<EOF
3790 At least one library type must be built.
3791 Specify --enable-static to build the static libraries or --enable-shared to
3792 build the shared libraries as well. To only build the shared libraries specify
3793 --disable-static in addition to --enable-shared.
3794 EOF
3795     exit 1;
3796 fi
3797
3798 # backward compatibility layer for incompatible_libav/fork_abi
3799 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3800 enabled incompatible_libav_abi && enable incompatible_fork_abi
3801
3802 die_license_disabled() {
3803     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3804 }
3805
3806 die_license_disabled_gpl() {
3807     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3808 }
3809
3810 die_license_disabled gpl frei0r
3811 die_license_disabled gpl libcdio
3812 die_license_disabled gpl libutvideo
3813 die_license_disabled gpl libvidstab
3814 die_license_disabled gpl libx264
3815 die_license_disabled gpl libxavs
3816 die_license_disabled gpl libxvid
3817 die_license_disabled gpl libzvbi
3818 die_license_disabled gpl x11grab
3819
3820 die_license_disabled nonfree libaacplus
3821 die_license_disabled nonfree libfaac
3822 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3823 enabled gpl && die_license_disabled_gpl nonfree openssl
3824
3825 die_license_disabled version3 libopencore_amrnb
3826 die_license_disabled version3 libopencore_amrwb
3827 die_license_disabled version3 libvo_aacenc
3828 die_license_disabled version3 libvo_amrwbenc
3829
3830 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3831
3832 disabled optimizations || check_cflags -fomit-frame-pointer
3833
3834 enable_weak_pic() {
3835     disabled pic && return
3836     enable pic
3837     add_cppflags -DPIC
3838     case "$target_os" in
3839     mingw*|cygwin*)
3840         ;;
3841     *)
3842         add_cflags -fPIC
3843         ;;
3844     esac
3845     add_asflags  -fPIC
3846 }
3847
3848 enabled pic && enable_weak_pic
3849
3850 check_cc <<EOF || die "Symbol mangling check failed."
3851 int ff_extern;
3852 EOF
3853 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3854 extern_prefix=${sym%%ff_extern*}
3855
3856 check_cc <<EOF && enable_weak inline_asm
3857 void foo(void) { __asm__ volatile ("" ::); }
3858 EOF
3859
3860 _restrict=
3861 for restrict_keyword in restrict __restrict__ __restrict; do
3862     check_cc <<EOF && _restrict=$restrict_keyword && break
3863 void foo(char * $restrict_keyword p);
3864 EOF
3865 done
3866
3867 check_cc <<EOF && enable pragma_deprecated
3868 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3869 EOF
3870
3871 check_cc <<EOF && enable attribute_packed
3872 struct { int x; } __attribute__((packed)) x;
3873 EOF
3874
3875 check_cc <<EOF && enable attribute_may_alias
3876 union { int x; } __attribute__((may_alias)) x;
3877 EOF
3878
3879 check_cc <<EOF || die "endian test failed"
3880 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3881 EOF
3882 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3883
3884 check_inline_asm inline_asm_labels '"1:\n"'
3885
3886 if enabled alpha; then
3887
3888     check_cflags -mieee
3889
3890 elif enabled arm; then
3891
3892     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3893 float func(float a, float b){ return a+b; }
3894 EOF
3895
3896     enabled thumb && check_cflags -mthumb || check_cflags -marm
3897     nogas=die
3898
3899     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3900         enable vfp_args
3901     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3902         case "${cross_prefix:-$cc}" in
3903             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3904             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3905 __asm__ (".eabi_attribute 28, 1");
3906 int main(void) { return 0; }
3907 EOF
3908         esac
3909         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3910     fi
3911
3912     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3913     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3914     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3915     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3916     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3917     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3918
3919     [ $target_os = linux ] ||
3920         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3921             $ARCH_EXT_LIST_ARM
3922
3923     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3924     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3925
3926     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3927
3928 elif enabled mips; then
3929
3930     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3931     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3932      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3933     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3934      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3935     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3936      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3937     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3938      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3939
3940 elif enabled parisc; then
3941
3942     if enabled gcc; then
3943         case $($cc -dumpversion) in
3944             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3945         esac
3946     fi
3947
3948 elif enabled ppc; then
3949
3950     enable local_aligned_8 local_aligned_16
3951
3952     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3953     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3954     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3955     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3956
3957     # AltiVec flags: The FSF version of GCC differs from the Apple version
3958     if enabled altivec; then
3959         if ! enabled_any pic ppc64; then
3960             nogas=warn
3961         fi
3962         check_cflags -maltivec -mabi=altivec &&
3963         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3964         check_cflags -faltivec
3965
3966         # check if our compiler supports Motorola AltiVec C API
3967         check_cc <<EOF || disable altivec
3968 $inc_altivec_h
3969 int main(void) {
3970     vector signed int v1 = (vector signed int) { 0 };
3971     vector signed int v2 = (vector signed int) { 1 };
3972     v1 = vec_add(v1, v2);
3973     return 0;
3974 }
3975 EOF
3976
3977         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3978     fi
3979
3980 elif enabled sparc; then
3981
3982     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3983
3984 elif enabled x86; then
3985
3986     check_builtin rdtsc    intrin.h   "__rdtsc()"
3987     check_builtin mm_empty mmintrin.h "_mm_empty()"
3988
3989     enable local_aligned_8 local_aligned_16
3990
3991     # check whether EBP is available on x86
3992     # As 'i' is stored on the stack, this program will crash
3993     # if the base pointer is used to access it because the
3994     # base pointer is cleared in the inline assembly code.
3995     check_exec_crash <<EOF && enable ebp_available
3996 volatile int i=0;
3997 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3998 return i;
3999 EOF
4000
4001     # check whether EBX is available on x86
4002     check_inline_asm ebx_available '""::"b"(0)' &&
4003         check_inline_asm ebx_available '"":::"%ebx"'
4004
4005     # check whether xmm clobbers are supported
4006     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4007
4008     # check whether binutils is new enough to compile SSSE3/MMXEXT
4009     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4010     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4011
4012     if ! disabled_any asm mmx yasm; then
4013         if check_cmd $yasmexe --version; then
4014             enabled x86_64 && yasm_extra="-m amd64"
4015             yasm_debug="-g dwarf2"
4016         elif check_cmd nasm -v; then
4017             yasmexe=nasm
4018             yasm_debug="-g -F dwarf"
4019             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4020         fi
4021
4022         YASMFLAGS="-f $objformat $yasm_extra"
4023         enabled pic               && append YASMFLAGS "-DPIC"
4024         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4025         case "$objformat" in
4026             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4027         esac
4028
4029         check_yasm "movbe ecx, [5]" && enable yasm ||
4030             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4031         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4032         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4033         check_yasm "CPU amdnop" && enable cpunop
4034     fi
4035
4036     case "$cpu" in
4037         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4038          &nb