Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 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 test_cflags(){
861     log test_cflags "$@"
862     set -- $($cflags_filter "$@")
863     check_cc "$@" <<EOF
864 int x;
865 EOF
866 }
867
868 check_cflags(){
869     log check_cflags "$@"
870     test_cflags "$@" && add_cflags "$@"
871 }
872
873 check_cxxflags(){
874     log check_cxxflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
877 int x;
878 EOF
879 }
880
881 test_ldflags(){
882     log test_ldflags "$@"
883     check_ld "cc" "$@" <<EOF
884 int main(void){ return 0; }
885 EOF
886 }
887
888 check_ldflags(){
889     log check_ldflags "$@"
890     test_ldflags "$@" && add_ldflags "$@"
891 }
892
893 check_header(){
894     log check_header "$@"
895     header=$1
896     shift
897     disable_safe $header
898     check_cpp "$@" <<EOF && enable_safe $header
899 #include <$header>
900 int x;
901 EOF
902 }
903
904 check_func(){
905     log check_func "$@"
906     func=$1
907     shift
908     disable $func
909     check_ld "cc" "$@" <<EOF && enable $func
910 extern int $func();
911 int main(void){ $func(); }
912 EOF
913 }
914
915 check_mathfunc(){
916     log check_mathfunc "$@"
917     func=$1
918     narg=$2
919     shift 2
920     test $narg = 2 && args="f, g" || args="f"
921     disable $func
922     check_ld "cc" "$@" <<EOF && enable $func
923 #include <math.h>
924 float foo(float f, float g) { return $func($args); }
925 int main(void){ return (int) foo; }
926 EOF
927 }
928
929 check_func_headers(){
930     log check_func_headers "$@"
931     headers=$1
932     funcs=$2
933     shift 2
934     {
935         for hdr in $headers; do
936             echo "#include <$hdr>"
937         done
938         for func in $funcs; do
939             echo "long check_$func(void) { return (long) $func; }"
940         done
941         echo "int main(void) { return 0; }"
942     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
943 }
944
945 check_class_headers_cpp(){
946     log check_class_headers_cpp "$@"
947     headers=$1
948     classes=$2
949     shift 2
950     {
951         for hdr in $headers; do
952             echo "#include <$hdr>"
953         done
954         echo "int main(void) { "
955         i=1
956         for class in $classes; do
957             echo "$class obj$i;"
958             i=$(expr $i + 1)
959         done
960         echo "return 0; }"
961     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
962 }
963
964 check_cpp_condition(){
965     log check_cpp_condition "$@"
966     header=$1
967     condition=$2
968     shift 2
969     check_cpp "$@" <<EOF
970 #include <$header>
971 #if !($condition)
972 #error "unsatisfied condition: $condition"
973 #endif
974 EOF
975 }
976
977 check_lib(){
978     log check_lib "$@"
979     header="$1"
980     func="$2"
981     shift 2
982     check_header $header && check_func $func "$@" && add_extralibs "$@"
983 }
984
985 check_lib2(){
986     log check_lib2 "$@"
987     headers="$1"
988     funcs="$2"
989     shift 2
990     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
991 }
992
993 check_lib_cpp(){
994     log check_lib_cpp "$@"
995     headers="$1"
996     classes="$2"
997     shift 2
998     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
999 }
1000
1001 check_pkg_config(){
1002     log check_pkg_config "$@"
1003     pkg="$1"
1004     headers="$2"
1005     funcs="$3"
1006     shift 3
1007     check_cmd $pkg_config --exists --print-errors $pkg || return
1008     pkg_cflags=$($pkg_config --cflags $pkg)
1009     pkg_libs=$($pkg_config --libs $pkg)
1010     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1011         set_safe ${pkg}_cflags $pkg_cflags   &&
1012         set_safe ${pkg}_libs   $pkg_libs
1013 }
1014
1015 check_exec(){
1016     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1017 }
1018
1019 check_exec_crash(){
1020     code=$(cat)
1021
1022     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1023     # are safe but may not be available everywhere.  Thus we use
1024     # raise(SIGTERM) instead.  The check is run in a subshell so we
1025     # can redirect the "Terminated" message from the shell.  SIGBUS
1026     # is not defined by standard C so it is used conditionally.
1027
1028     (check_exec "$@") >> $logfile 2>&1 <<EOF
1029 #include <signal.h>
1030 static void sighandler(int sig){
1031     raise(SIGTERM);
1032 }
1033 int foo(void){
1034     $code
1035 }
1036 int (*func_ptr)(void) = foo;
1037 int main(void){
1038     signal(SIGILL, sighandler);
1039     signal(SIGFPE, sighandler);
1040     signal(SIGSEGV, sighandler);
1041 #ifdef SIGBUS
1042     signal(SIGBUS, sighandler);
1043 #endif
1044     return func_ptr();
1045 }
1046 EOF
1047 }
1048
1049 check_type(){
1050     log check_type "$@"
1051     headers=$1
1052     type=$2
1053     shift 2
1054     disable_safe "$type"
1055     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1056 }
1057
1058 check_struct(){
1059     log check_struct "$@"
1060     headers=$1
1061     struct=$2
1062     member=$3
1063     shift 3
1064     disable_safe "${struct}_${member}"
1065     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1066         enable_safe "${struct}_${member}"
1067 }
1068
1069 check_builtin(){
1070     log check_builtin "$@"
1071     name=$1
1072     headers=$2
1073     builtin=$3
1074     shift 3
1075     disable "$name"
1076     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1077 }
1078
1079 require(){
1080     name="$1"
1081     header="$2"
1082     func="$3"
1083     shift 3
1084     check_lib $header $func "$@" || die "ERROR: $name not found"
1085 }
1086
1087 require2(){
1088     name="$1"
1089     headers="$2"
1090     func="$3"
1091     shift 3
1092     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1093 }
1094
1095 require_cpp(){
1096     name="$1"
1097     headers="$2"
1098     classes="$3"
1099     shift 3
1100     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1101 }
1102
1103 require_pkg_config(){
1104     pkg="$1"
1105     check_pkg_config "$@" || die "ERROR: $pkg not found"
1106     add_cflags    $(get_safe ${pkg}_cflags)
1107     add_extralibs $(get_safe ${pkg}_libs)
1108 }
1109
1110 hostcc_o(){
1111     eval printf '%s\\n' $HOSTCC_O
1112 }
1113
1114 check_host_cc(){
1115     log check_host_cc "$@"
1116     cat > $TMPC
1117     log_file $TMPC
1118     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1119 }
1120
1121 check_host_cppflags(){
1122     log check_host_cppflags "$@"
1123     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1124 int x;
1125 EOF
1126 }
1127
1128 check_host_cflags(){
1129     log check_host_cflags "$@"
1130     set -- $($host_cflags_filter "$@")
1131     check_host_cc "$@" <<EOF && append host_cflags "$@"
1132 int x;
1133 EOF
1134 }
1135
1136 apply(){
1137     file=$1
1138     shift
1139     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1140 }
1141
1142 cp_if_changed(){
1143     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1144     mkdir -p "$(dirname $2)"
1145     $cp_f "$1" "$2"
1146 }
1147
1148 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1149 # system-dependent things.
1150
1151 COMPONENT_LIST="
1152     bsfs
1153     decoders
1154     demuxers
1155     encoders
1156     filters
1157     hwaccels
1158     indevs
1159     muxers
1160     outdevs
1161     parsers
1162     protocols
1163 "
1164
1165 EXTERNAL_LIBRARY_LIST="
1166     avisynth
1167     bzlib
1168     crystalhd
1169     fontconfig
1170     frei0r
1171     gnutls
1172     iconv
1173     ladspa
1174     libaacplus
1175     libass
1176     libbluray
1177     libcaca
1178     libcdio
1179     libcelt
1180     libdc1394
1181     libfaac
1182     libfdk_aac
1183     libflite
1184     libfreetype
1185     libgme
1186     libgsm
1187     libiec61883
1188     libilbc
1189     libmodplug
1190     libmp3lame
1191     libnut
1192     libopencore_amrnb
1193     libopencore_amrwb
1194     libopencv
1195     libopenjpeg
1196     libopus
1197     libpulse
1198     libquvi
1199     librtmp
1200     libschroedinger
1201     libshine
1202     libsoxr
1203     libspeex
1204     libssh
1205     libstagefright_h264
1206     libtheora
1207     libtwolame
1208     libutvideo
1209     libv4l2
1210     libvidstab
1211     libvo_aacenc
1212     libvo_amrwbenc
1213     libvorbis
1214     libvpx
1215     libwavpack
1216     libx264
1217     libxavs
1218     libxvid
1219     libzmq
1220     libzvbi
1221     openal
1222     opencl
1223     openssl
1224     x11grab
1225     zlib
1226 "
1227
1228 DOCUMENT_LIST="
1229     doc
1230     htmlpages
1231     manpages
1232     podpages
1233     txtpages
1234 "
1235
1236 HWACCEL_LIST="
1237     dxva2
1238     vaapi
1239     vda
1240     vdpau
1241 "
1242
1243 LIBRARY_LIST="
1244     avcodec
1245     avdevice
1246     avfilter
1247     avformat
1248     avresample
1249     avutil
1250     postproc
1251     swresample
1252     swscale
1253 "
1254
1255 PROGRAM_LIST="
1256     ffplay
1257     ffprobe
1258     ffserver
1259     ffmpeg
1260 "
1261
1262 CONFIG_LIST="
1263     $COMPONENT_LIST
1264     $DOCUMENT_LIST
1265     $EXTERNAL_LIBRARY_LIST
1266     $HWACCEL_LIST
1267     $LIBRARY_LIST
1268     $PROGRAM_LIST
1269     dct
1270     dwt
1271     error_resilience
1272     fast_unaligned
1273     fft
1274     ftrapv
1275     gpl
1276     gray
1277     hardcoded_tables
1278     incompatible_libav_abi
1279     incompatible_fork_abi
1280     lsp
1281     lzo
1282     mdct
1283     memalign_hack
1284     memory_poisoning
1285     network
1286     nonfree
1287     pic
1288     rdft
1289     runtime_cpudetect
1290     safe_bitstream_reader
1291     shared
1292     small
1293     sram
1294     static
1295     swscale_alpha
1296     thumb
1297     version3
1298     xmm_clobber_test
1299 "
1300
1301 THREADS_LIST='
1302     pthreads
1303     w32threads
1304     os2threads
1305 '
1306
1307 ATOMICS_LIST='
1308     atomics_gcc
1309     atomics_suncc
1310     atomics_win32
1311 '
1312
1313 ARCH_LIST='
1314     aarch64
1315     alpha
1316     arm
1317     avr32
1318     avr32_ap
1319     avr32_uc
1320     bfin
1321     ia64
1322     m68k
1323     mips
1324     mips64
1325     parisc
1326     ppc
1327     ppc64
1328     s390
1329     sh4
1330     sparc
1331     sparc64
1332     tilegx
1333     tilepro
1334     tomi
1335     x86
1336     x86_32
1337     x86_64
1338 '
1339
1340 ARCH_EXT_LIST_ARM='
1341     armv5te
1342     armv6
1343     armv6t2
1344     neon
1345     vfp
1346     vfpv3
1347 '
1348
1349 ARCH_EXT_LIST_X86='
1350     amd3dnow
1351     amd3dnowext
1352     avx
1353     avx2
1354     fma4
1355     i686
1356     mmx
1357     mmxext
1358     sse
1359     sse2
1360     sse3
1361     sse4
1362     sse42
1363     ssse3
1364 '
1365
1366 ARCH_EXT_LIST="
1367     $ARCH_EXT_LIST_ARM
1368     $ARCH_EXT_LIST_X86
1369     altivec
1370     ppc4xx
1371     vis
1372     mipsfpu
1373     mips32r2
1374     mipsdspr1
1375     mipsdspr2
1376 "
1377
1378 HAVE_LIST_CMDLINE='
1379     inline_asm
1380     symver
1381     yasm
1382 '
1383
1384 HAVE_LIST_PUB='
1385     bigendian
1386     fast_unaligned
1387     incompatible_libav_abi
1388     incompatible_fork_abi
1389 '
1390
1391 MATH_FUNCS="
1392     atanf
1393     atan2f
1394     cbrt
1395     cbrtf
1396     cosf
1397     exp2
1398     exp2f
1399     expf
1400     isinf
1401     isnan
1402     ldexpf
1403     llrint
1404     llrintf
1405     log2
1406     log2f
1407     log10f
1408     lrint
1409     lrintf
1410     powf
1411     rint
1412     round
1413     roundf
1414     sinf
1415     trunc
1416     truncf
1417 "
1418
1419 HAVE_LIST="
1420     $ARCH_EXT_LIST
1421     $(add_suffix _external $ARCH_EXT_LIST)
1422     $(add_suffix _inline   $ARCH_EXT_LIST)
1423     $HAVE_LIST_CMDLINE
1424     $HAVE_LIST_PUB
1425     $THREADS_LIST
1426     $ATOMICS_LIST
1427     $MATH_FUNCS
1428     access
1429     aligned_malloc
1430     aligned_stack
1431     alsa_asoundlib_h
1432     altivec_h
1433     arpa_inet_h
1434     asm_mod_q
1435     asm_mod_y
1436     asm_types_h
1437     atomic_cas_ptr
1438     atomics_native
1439     attribute_may_alias
1440     attribute_packed
1441     cdio_paranoia_h
1442     cdio_paranoia_paranoia_h
1443     CL_cl_h
1444     clock_gettime
1445     closesocket
1446     CommandLineToArgvW
1447     cpunop
1448     CryptGenRandom
1449     dcbzl
1450     dev_bktr_ioctl_bt848_h
1451     dev_bktr_ioctl_meteor_h
1452     dev_ic_bt8xx_h
1453     dev_video_bktr_ioctl_bt848_h
1454     dev_video_meteor_ioctl_meteor_h
1455     direct_h
1456     dlfcn_h
1457     dlopen
1458     dos_paths
1459     dxva_h
1460     ebp_available
1461     ebx_available
1462     fast_64bit
1463     fast_clz
1464     fast_cmov
1465     fcntl
1466     fork
1467     getaddrinfo
1468     gethrtime
1469     getopt
1470     GetProcessAffinityMask
1471     GetProcessMemoryInfo
1472     GetProcessTimes
1473     GetSystemTimeAsFileTime
1474     getrusage
1475     getservbyport
1476     gettimeofday
1477     glob
1478     gnu_as
1479     gsm_h
1480     ibm_asm
1481     inet_aton
1482     io_h
1483     inline_asm_labels
1484     isatty
1485     jack_port_get_latency_range
1486     kbhit
1487     ldbrx
1488     libdc1394_1
1489     libdc1394_2
1490     local_aligned_16
1491     local_aligned_8
1492     localtime_r
1493     loongson
1494     lzo1x_999_compress
1495     machine_ioctl_bt848_h
1496     machine_ioctl_meteor_h
1497     machine_rw_barrier
1498     makeinfo
1499     malloc_h
1500     MapViewOfFile
1501     memalign
1502     MemoryBarrier
1503     mkstemp
1504     mm_empty
1505     mmap
1506     mprotect
1507     msvcrt
1508     nanosleep
1509     openjpeg_1_5_openjpeg_h
1510     PeekNamedPipe
1511     perl
1512     pod2man
1513     poll_h
1514     posix_memalign
1515     pragma_deprecated
1516     pthread_cancel
1517     rdtsc
1518     rsync_contimeout
1519     sarestart
1520     sched_getaffinity
1521     sdl
1522     SetConsoleTextAttribute
1523     setmode
1524     setrlimit
1525     Sleep
1526     sndio_h
1527     socklen_t
1528     soundcard_h
1529     strerror_r
1530     struct_addrinfo
1531     struct_group_source_req
1532     struct_ip_mreq_source
1533     struct_ipv6_mreq
1534     struct_pollfd
1535     struct_rusage_ru_maxrss
1536     struct_sctp_event_subscribe
1537     struct_sockaddr_in6
1538     struct_sockaddr_sa_len
1539     struct_sockaddr_storage
1540     struct_stat_st_mtim_tv_nsec
1541     struct_v4l2_frmivalenum_discrete
1542     symver_asm_label
1543     symver_gnu_asm
1544     sync_val_compare_and_swap
1545     sysconf
1546     sysctl
1547     sys_mman_h
1548     sys_param_h
1549     sys_resource_h
1550     sys_select_h
1551     sys_soundcard_h
1552     sys_time_h
1553     sys_un_h
1554     sys_videoio_h
1555     termios_h
1556     texi2html
1557     threads
1558     unistd_h
1559     usleep
1560     vfp_args
1561     VirtualAlloc
1562     windows_h
1563     winsock2_h
1564     xform_asm
1565     xmm_clobbers
1566 "
1567
1568 # options emitted with CONFIG_ prefix but not available on the command line
1569 CONFIG_EXTRA="
1570     aandcttables
1571     ac3dsp
1572     audio_frame_queue
1573     dsputil
1574     exif
1575     frame_thread_encoder
1576     gcrypt
1577     golomb
1578     gplv3
1579     h263dsp
1580     h264chroma
1581     h264dsp
1582     h264pred
1583     h264qpel
1584     hpeldsp
1585     huffman
1586     lgplv3
1587     lpc
1588     mpegaudio
1589     mpegaudiodsp
1590     mpegvideo
1591     mpegvideoenc
1592     nettle
1593     rangecoder
1594     riffdec
1595     riffenc
1596     rtpdec
1597     rtpenc_chain
1598     sinewin
1599     videodsp
1600     vp3dsp
1601 "
1602
1603 CMDLINE_SELECT="
1604     $ARCH_EXT_LIST
1605     $CONFIG_LIST
1606     $HAVE_LIST_CMDLINE
1607     $THREADS_LIST
1608     asm
1609     cross_compile
1610     debug
1611     extra_warnings
1612     logging
1613     lto
1614     optimizations
1615     stripping
1616 "
1617
1618 PATHS_LIST='
1619     bindir
1620     datadir
1621     docdir
1622     incdir
1623     libdir
1624     mandir
1625     prefix
1626     shlibdir
1627 '
1628
1629 CMDLINE_SET="
1630     $PATHS_LIST
1631     ar
1632     arch
1633     as
1634     assert_level
1635     build_suffix
1636     cc
1637     cpu
1638     cross_prefix
1639     cxx
1640     dep_cc
1641     extra_version
1642     host_cc
1643     host_cflags
1644     host_ld
1645     host_ldflags
1646     host_libs
1647     host_os
1648     install
1649     ld
1650     logfile
1651     malloc_prefix
1652     nm
1653     optflags
1654     pkg_config
1655     progs_suffix
1656     random_seed
1657     samples
1658     strip
1659     sysinclude
1660     sysroot
1661     target_exec
1662     target_os
1663     target_path
1664     target_samples
1665     tempprefix
1666     toolchain
1667     valgrind
1668     yasmexe
1669 "
1670
1671 CMDLINE_APPEND="
1672     extra_cflags
1673     extra_cxxflags
1674     host_cppflags
1675 "
1676
1677 # code dependency declarations
1678
1679 # architecture extensions
1680
1681 armv5te_deps="arm"
1682 armv6_deps="arm"
1683 armv6t2_deps="arm"
1684 neon_deps="arm"
1685 vfp_deps="arm"
1686 vfpv3_deps="vfp"
1687
1688 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1689
1690 mipsfpu_deps="mips"
1691 mips32r2_deps="mips"
1692 mipsdspr1_deps="mips"
1693 mipsdspr2_deps="mips"
1694
1695 altivec_deps="ppc"
1696 ppc4xx_deps="ppc"
1697
1698 vis_deps="sparc"
1699
1700 cpunop_deps="i686"
1701 x86_64_select="i686"
1702 x86_64_suggest="fast_cmov"
1703
1704 amd3dnow_deps="mmx"
1705 amd3dnowext_deps="amd3dnow"
1706 mmx_deps="x86"
1707 mmxext_deps="mmx"
1708 sse_deps="mmxext"
1709 sse2_deps="sse"
1710 sse3_deps="sse2"
1711 ssse3_deps="sse3"
1712 sse4_deps="ssse3"
1713 sse42_deps="sse4"
1714 avx_deps="sse42"
1715 fma4_deps="avx"
1716 avx2_deps="avx"
1717
1718 mmx_external_deps="yasm"
1719 mmx_inline_deps="inline_asm"
1720 mmx_suggest="mmx_external mmx_inline"
1721
1722 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1723     eval dep=\$${ext}_deps
1724     eval ${ext}_external_deps='"${dep}_external"'
1725     eval ${ext}_inline_deps='"${dep}_inline"'
1726     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1727 done
1728
1729 aligned_stack_if_any="ppc x86"
1730 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1731 fast_clz_if_any="alpha avr32 mips ppc x86"
1732 fast_unaligned_if_any="ppc x86"
1733
1734 inline_asm_deps="!tms470"
1735 need_memalign="altivec neon sse"
1736
1737 symver_if_any="symver_asm_label symver_gnu_asm"
1738
1739 log2_deps="!msvcrt"
1740
1741 # subsystems
1742 dct_select="rdft"
1743 error_resilience_select="dsputil"
1744 frame_thread_encoder_deps="encoders threads"
1745 lpc_select="dsputil"
1746 mdct_select="fft"
1747 rdft_select="fft"
1748 mpegaudio_select="mpegaudiodsp"
1749 mpegaudiodsp_select="dct"
1750 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1751 mpegvideoenc_select="mpegvideo"
1752
1753 # decoders / encoders
1754 aac_decoder_select="mdct sinewin"
1755 aac_encoder_select="audio_frame_queue mdct sinewin"
1756 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1757 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1758 ac3_encoder_select="mdct ac3dsp dsputil"
1759 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1760 aic_decoder_select="dsputil golomb"
1761 alac_encoder_select="lpc"
1762 als_decoder_select="dsputil"
1763 amrnb_decoder_select="lsp"
1764 amrwb_decoder_select="lsp"
1765 amv_decoder_select="dsputil hpeldsp exif"
1766 amv_encoder_select="aandcttables"
1767 ape_decoder_select="dsputil"
1768 asv1_decoder_select="dsputil"
1769 asv1_encoder_select="dsputil"
1770 asv2_decoder_select="dsputil"
1771 asv2_encoder_select="dsputil"
1772 atrac1_decoder_select="mdct sinewin"
1773 atrac3_decoder_select="mdct"
1774 avrn_decoder_select="exif"
1775 bink_decoder_select="dsputil hpeldsp"
1776 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1777 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1778 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1779 cllc_decoder_select="dsputil"
1780 comfortnoise_encoder_select="lpc"
1781 cook_decoder_select="dsputil mdct sinewin"
1782 cscd_decoder_select="lzo"
1783 cscd_decoder_suggest="zlib"
1784 dca_decoder_select="mdct"
1785 dirac_decoder_select="dsputil dwt golomb videodsp"
1786 dnxhd_decoder_select="dsputil"
1787 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1788 dvvideo_decoder_select="dsputil"
1789 dvvideo_encoder_select="dsputil"
1790 dxa_decoder_select="zlib"
1791 eac3_decoder_select="ac3_decoder"
1792 eac3_encoder_select="ac3_encoder"
1793 eamad_decoder_select="aandcttables dsputil mpegvideo"
1794 eatgq_decoder_select="aandcttables"
1795 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1796 exr_decoder_select="zlib"
1797 ffv1_decoder_select="dsputil golomb rangecoder"
1798 ffv1_encoder_select="dsputil rangecoder"
1799 ffvhuff_decoder_select="dsputil"
1800 ffvhuff_encoder_select="dsputil huffman"
1801 flac_decoder_select="golomb"
1802 flac_encoder_select="dsputil golomb lpc"
1803 flashsv_decoder_select="zlib"
1804 flashsv_encoder_select="zlib"
1805 flashsv2_encoder_select="zlib"
1806 flashsv2_decoder_select="zlib"
1807 flv_decoder_select="h263_decoder"
1808 flv_encoder_select="h263_encoder"
1809 fourxm_decoder_select="dsputil"
1810 fraps_decoder_select="dsputil huffman"
1811 g2m_decoder_select="dsputil zlib"
1812 g729_decoder_select="dsputil"
1813 h261_decoder_select="error_resilience mpegvideo"
1814 h261_encoder_select="aandcttables mpegvideoenc"
1815 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1816 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1817 h263i_decoder_select="h263_decoder"
1818 h263p_encoder_select="h263_encoder"
1819 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1820 h264_decoder_suggest="error_resilience"
1821 hevc_decoder_select="dsputil golomb videodsp"
1822 huffyuv_decoder_select="dsputil"
1823 huffyuv_encoder_select="dsputil huffman"
1824 iac_decoder_select="dsputil fft mdct sinewin"
1825 imc_decoder_select="dsputil fft mdct sinewin"
1826 indeo3_decoder_select="hpeldsp"
1827 interplay_video_decoder_select="hpeldsp"
1828 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1829 jpegls_encoder_select="golomb"
1830 jv_decoder_select="dsputil"
1831 lagarith_decoder_select="dsputil"
1832 ljpeg_encoder_select="aandcttables mpegvideoenc"
1833 loco_decoder_select="golomb"
1834 mdec_decoder_select="dsputil error_resilience mpegvideo"
1835 metasound_decoder_select="lsp mdct sinewin"
1836 mimic_decoder_select="dsputil hpeldsp"
1837 mjpeg_decoder_select="dsputil hpeldsp exif"
1838 mjpegb_decoder_select="dsputil hpeldsp exif"
1839 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1840 mlp_decoder_select="dsputil mlp_parser"
1841 motionpixels_decoder_select="dsputil"
1842 mp1_decoder_select="mpegaudio"
1843 mp1float_decoder_select="mpegaudio"
1844 mp2_decoder_select="mpegaudio"
1845 mp2float_decoder_select="mpegaudio"
1846 mp3_decoder_select="mpegaudio"
1847 mp3adu_decoder_select="mpegaudio"
1848 mp3adufloat_decoder_select="mpegaudio"
1849 mp3float_decoder_select="mpegaudio"
1850 mp3on4_decoder_select="mpegaudio"
1851 mp3on4float_decoder_select="mpegaudio"
1852 mpc7_decoder_select="dsputil mpegaudiodsp"
1853 mpc8_decoder_select="dsputil mpegaudiodsp"
1854 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1855 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1856 mpeg1video_decoder_select="error_resilience mpegvideo"
1857 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1858 mpeg2video_decoder_select="error_resilience mpegvideo"
1859 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1860 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1861 mpeg4_encoder_select="h263_encoder"
1862 msmpeg4v1_decoder_select="h263_decoder"
1863 msmpeg4v2_decoder_select="h263_decoder"
1864 msmpeg4v2_encoder_select="h263_encoder"
1865 msmpeg4v3_decoder_select="h263_decoder"
1866 msmpeg4v3_encoder_select="h263_encoder"
1867 mss2_decoder_select="error_resilience vc1_decoder"
1868 mxpeg_decoder_select="dsputil hpeldsp exif"
1869 nellymoser_decoder_select="mdct sinewin"
1870 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1871 nuv_decoder_select="dsputil lzo"
1872 png_decoder_select="zlib"
1873 png_encoder_select="dsputil zlib"
1874 prores_decoder_select="dsputil"
1875 prores_encoder_select="dsputil"
1876 qcelp_decoder_select="lsp"
1877 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1878 ra_144_encoder_select="audio_frame_queue lpc"
1879 ralf_decoder_select="golomb"
1880 rtjpeg_decoder_select="dsputil"
1881 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1882 rv10_encoder_select="h263_encoder"
1883 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1884 rv20_encoder_select="h263_encoder"
1885 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1886 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1887 shorten_decoder_select="golomb"
1888 sipr_decoder_select="lsp"
1889 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1890 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1891 sonic_decoder_select="golomb"
1892 sonic_encoder_select="golomb"
1893 sonic_ls_encoder_select="golomb"
1894 sp5x_decoder_select="dsputil hpeldsp exif"
1895 svq1_decoder_select="hpeldsp"
1896 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1897 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1898 svq3_decoder_suggest="error_resilience zlib"
1899 tak_decoder_select="dsputil"
1900 theora_decoder_select="vp3_decoder"
1901 tiff_decoder_suggest="zlib"
1902 tiff_encoder_suggest="zlib"
1903 thp_decoder_select="dsputil hpeldsp exif"
1904 truehd_decoder_select="mlp_parser"
1905 truemotion2_decoder_select="dsputil"
1906 truespeech_decoder_select="dsputil"
1907 tscc_decoder_select="zlib"
1908 twinvq_decoder_select="mdct lsp sinewin"
1909 utvideo_decoder_select="dsputil"
1910 utvideo_encoder_select="dsputil huffman"
1911 vble_decoder_select="dsputil"
1912 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1913 vc1image_decoder_select="vc1_decoder"
1914 vorbis_decoder_select="mdct"
1915 vorbis_encoder_select="mdct"
1916 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1917 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1918 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1919 vp6a_decoder_select="vp6_decoder"
1920 vp6f_decoder_select="vp6_decoder"
1921 vp8_decoder_select="h264pred videodsp"
1922 vp9_decoder_select="videodsp"
1923 webp_decoder_select="vp8_decoder"
1924 wmapro_decoder_select="mdct sinewin"
1925 wmav1_decoder_select="mdct sinewin"
1926 wmav1_encoder_select="mdct sinewin"
1927 wmav2_decoder_select="mdct sinewin"
1928 wmav2_encoder_select="mdct sinewin"
1929 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1930 wmv1_decoder_select="h263_decoder"
1931 wmv1_encoder_select="h263_encoder"
1932 wmv2_decoder_select="h263_decoder videodsp"
1933 wmv2_encoder_select="h263_encoder"
1934 wmv3_decoder_select="vc1_decoder"
1935 wmv3image_decoder_select="wmv3_decoder"
1936 zerocodec_decoder_select="zlib"
1937 zlib_decoder_select="zlib"
1938 zlib_encoder_select="zlib"
1939 zmbv_decoder_select="zlib"
1940 zmbv_encoder_select="zlib"
1941
1942 # hardware accelerators
1943 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1944 dxva2_deps="dxva2api_h"
1945 vaapi_deps="va_va_h"
1946 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1947 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1948 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1949
1950 h263_vaapi_hwaccel_deps="vaapi"
1951 h263_vaapi_hwaccel_select="h263_decoder"
1952 h263_vdpau_hwaccel_deps="vdpau"
1953 h263_vdpau_hwaccel_select="h263_decoder"
1954 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1955 h264_dxva2_hwaccel_deps="dxva2"
1956 h264_dxva2_hwaccel_select="h264_decoder"
1957 h264_vaapi_hwaccel_deps="vaapi"
1958 h264_vaapi_hwaccel_select="h264_decoder"
1959 h264_vda_decoder_deps="vda"
1960 h264_vda_decoder_select="h264_decoder"
1961 h264_vda_hwaccel_deps="vda"
1962 h264_vda_hwaccel_select="h264_decoder"
1963 h264_vdpau_decoder_deps="vdpau"
1964 h264_vdpau_decoder_select="h264_decoder"
1965 h264_vdpau_hwaccel_deps="vdpau"
1966 h264_vdpau_hwaccel_select="h264_decoder"
1967 mpeg_vdpau_decoder_deps="vdpau"
1968 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1969 mpeg1_vdpau_decoder_deps="vdpau"
1970 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1971 mpeg1_vdpau_hwaccel_deps="vdpau"
1972 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1973 mpeg2_crystalhd_decoder_select="crystalhd"
1974 mpeg2_dxva2_hwaccel_deps="dxva2"
1975 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1976 mpeg2_vaapi_hwaccel_deps="vaapi"
1977 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1978 mpeg2_vdpau_hwaccel_deps="vdpau"
1979 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1980 mpeg4_crystalhd_decoder_select="crystalhd"
1981 mpeg4_vaapi_hwaccel_deps="vaapi"
1982 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1983 mpeg4_vdpau_decoder_deps="vdpau"
1984 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1985 mpeg4_vdpau_hwaccel_deps="vdpau"
1986 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1987 msmpeg4_crystalhd_decoder_select="crystalhd"
1988 vc1_crystalhd_decoder_select="crystalhd"
1989 vc1_dxva2_hwaccel_deps="dxva2"
1990 vc1_dxva2_hwaccel_select="vc1_decoder"
1991 vc1_vaapi_hwaccel_deps="vaapi"
1992 vc1_vaapi_hwaccel_select="vc1_decoder"
1993 vc1_vdpau_decoder_deps="vdpau"
1994 vc1_vdpau_decoder_select="vc1_decoder"
1995 vc1_vdpau_hwaccel_deps="vdpau"
1996 vc1_vdpau_hwaccel_select="vc1_decoder"
1997 wmv3_crystalhd_decoder_select="crystalhd"
1998 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1999 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2000 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2001 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2002
2003 # parsers
2004 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2005 mpeg4video_parser_select="error_resilience mpegvideo"
2006 mpegvideo_parser_select="error_resilience mpegvideo"
2007 vc1_parser_select="mpegvideo"
2008
2009 # external libraries
2010 libaacplus_encoder_deps="libaacplus"
2011 libcelt_decoder_deps="libcelt"
2012 libfaac_encoder_deps="libfaac"
2013 libfaac_encoder_select="audio_frame_queue"
2014 libfdk_aac_decoder_deps="libfdk_aac"
2015 libfdk_aac_encoder_deps="libfdk_aac"
2016 libfdk_aac_encoder_select="audio_frame_queue"
2017 libgme_demuxer_deps="libgme"
2018 libgsm_decoder_deps="libgsm"
2019 libgsm_encoder_deps="libgsm"
2020 libgsm_ms_decoder_deps="libgsm"
2021 libgsm_ms_encoder_deps="libgsm"
2022 libilbc_decoder_deps="libilbc"
2023 libilbc_encoder_deps="libilbc"
2024 libmodplug_demuxer_deps="libmodplug"
2025 libmp3lame_encoder_deps="libmp3lame"
2026 libmp3lame_encoder_select="audio_frame_queue"
2027 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2028 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2029 libopencore_amrnb_encoder_select="audio_frame_queue"
2030 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2031 libopenjpeg_decoder_deps="libopenjpeg"
2032 libopenjpeg_encoder_deps="libopenjpeg"
2033 libopus_decoder_deps="libopus"
2034 libopus_encoder_deps="libopus"
2035 libopus_encoder_select="audio_frame_queue"
2036 libquvi_demuxer_deps="libquvi"
2037 libschroedinger_decoder_deps="libschroedinger"
2038 libschroedinger_encoder_deps="libschroedinger"
2039 libshine_encoder_deps="libshine"
2040 libshine_encoder_select="audio_frame_queue"
2041 libspeex_decoder_deps="libspeex"
2042 libspeex_encoder_deps="libspeex"
2043 libspeex_encoder_select="audio_frame_queue"
2044 libstagefright_h264_decoder_deps="libstagefright_h264"
2045 libtheora_encoder_deps="libtheora"
2046 libtwolame_encoder_deps="libtwolame"
2047 libvo_aacenc_encoder_deps="libvo_aacenc"
2048 libvo_aacenc_encoder_select="audio_frame_queue"
2049 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2050 libvorbis_decoder_deps="libvorbis"
2051 libvorbis_encoder_deps="libvorbis"
2052 libvorbis_encoder_select="audio_frame_queue"
2053 libvpx_vp8_decoder_deps="libvpx"
2054 libvpx_vp8_encoder_deps="libvpx"
2055 libvpx_vp9_decoder_deps="libvpx"
2056 libvpx_vp9_encoder_deps="libvpx"
2057 libwavpack_encoder_deps="libwavpack"
2058 libx264_encoder_deps="libx264"
2059 libx264rgb_encoder_deps="libx264"
2060 libxavs_encoder_deps="libxavs"
2061 libxvid_encoder_deps="libxvid"
2062 libutvideo_decoder_deps="libutvideo"
2063 libutvideo_encoder_deps="libutvideo"
2064 libzvbi_teletext_decoder_deps="libzvbi"
2065
2066 # demuxers / muxers
2067 ac3_demuxer_select="ac3_parser"
2068 asf_demuxer_select="riffdec"
2069 asf_muxer_select="riffenc"
2070 asf_stream_muxer_select="asf_muxer"
2071 avi_demuxer_select="riffdec"
2072 avi_muxer_select="riffenc"
2073 avisynth_demuxer_deps="avisynth"
2074 avisynth_demuxer_select="riffdec"
2075 caf_demuxer_select="riffdec"
2076 dirac_demuxer_select="dirac_parser"
2077 dts_demuxer_select="dca_parser"
2078 dtshd_demuxer_select="dca_parser"
2079 dxa_demuxer_select="riffdec"
2080 eac3_demuxer_select="ac3_parser"
2081 f4v_muxer_select="mov_muxer"
2082 flac_demuxer_select="flac_parser"
2083 hds_muxer_select="flv_muxer"
2084 hls_muxer_select="mpegts_muxer"
2085 ipod_muxer_select="mov_muxer"
2086 ismv_muxer_select="mov_muxer"
2087 libnut_demuxer_deps="libnut"
2088 libnut_muxer_deps="libnut"
2089 matroska_audio_muxer_select="matroska_muxer"
2090 matroska_demuxer_select="riffdec"
2091 matroska_demuxer_suggest="bzlib lzo zlib"
2092 matroska_muxer_select="riffenc"
2093 mmf_muxer_select="riffenc"
2094 mov_demuxer_select="riffdec"
2095 mov_demuxer_suggest="zlib"
2096 mov_muxer_select="riffenc rtpenc_chain"
2097 mp3_demuxer_select="mpegaudio_parser"
2098 mp4_muxer_select="mov_muxer"
2099 mpegts_muxer_select="adts_muxer latm_muxer"
2100 mpegtsraw_demuxer_select="mpegts_demuxer"
2101 mxf_d10_muxer_select="mxf_muxer"
2102 nut_muxer_select="riffenc"
2103 nuv_demuxer_select="riffdec"
2104 ogg_demuxer_select="golomb"
2105 psp_muxer_select="mov_muxer"
2106 rtp_demuxer_select="sdp_demuxer"
2107 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2108 rtsp_demuxer_select="http_protocol rtpdec"
2109 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2110 sap_demuxer_select="sdp_demuxer"
2111 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2112 sdp_demuxer_select="rtpdec"
2113 smoothstreaming_muxer_select="ismv_muxer"
2114 spdif_muxer_select="aac_parser"
2115 tak_demuxer_select="tak_parser"
2116 tg2_muxer_select="mov_muxer"
2117 tgp_muxer_select="mov_muxer"
2118 vobsub_demuxer_select="mpegps_demuxer"
2119 w64_demuxer_select="wav_demuxer"
2120 w64_muxer_select="wav_muxer"
2121 wav_demuxer_select="riffdec"
2122 wav_muxer_select="riffenc"
2123 webm_muxer_select="riffenc"
2124 wtv_demuxer_select="riffdec"
2125 xmv_demuxer_select="riffdec"
2126 xwma_demuxer_select="riffdec"
2127
2128 # indevs / outdevs
2129 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2130 alsa_outdev_deps="alsa_asoundlib_h"
2131 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2132 caca_outdev_deps="libcaca"
2133 dshow_indev_deps="IBaseFilter"
2134 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2135 dv1394_indev_deps="dv1394"
2136 dv1394_indev_select="dv_demuxer"
2137 fbdev_indev_deps="linux_fb_h"
2138 fbdev_outdev_deps="linux_fb_h"
2139 iec61883_indev_deps="libiec61883"
2140 jack_indev_deps="jack_jack_h sem_timedwait"
2141 lavfi_indev_deps="avfilter"
2142 libcdio_indev_deps="libcdio"
2143 libdc1394_indev_deps="libdc1394"
2144 libv4l2_indev_deps="libv4l2"
2145 openal_indev_deps="openal"
2146 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2147 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2148 pulse_indev_deps="libpulse"
2149 pulse_outdev_deps="libpulse"
2150 sdl_outdev_deps="sdl"
2151 sndio_indev_deps="sndio_h"
2152 sndio_outdev_deps="sndio_h"
2153 v4l_indev_deps="linux_videodev_h"
2154 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2155 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2156 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2157 vfwcap_indev_extralibs="-lavicap32"
2158 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2159 xv_outdev_extralibs="-lXv -lX11 -lXext"
2160 x11grab_indev_deps="x11grab"
2161
2162 # protocols
2163 bluray_protocol_deps="libbluray"
2164 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2165 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2166 ffrtmpcrypt_protocol_select="tcp_protocol"
2167 ffrtmphttp_protocol_deps="!librtmp_protocol"
2168 ffrtmphttp_protocol_select="http_protocol"
2169 ftp_protocol_select="tcp_protocol"
2170 gopher_protocol_select="network"
2171 httpproxy_protocol_select="tcp_protocol"
2172 http_protocol_select="tcp_protocol"
2173 https_protocol_select="tls_protocol"
2174 librtmp_protocol_deps="librtmp"
2175 librtmpe_protocol_deps="librtmp"
2176 librtmps_protocol_deps="librtmp"
2177 librtmpt_protocol_deps="librtmp"
2178 librtmpte_protocol_deps="librtmp"
2179 libssh_protocol_deps="libssh"
2180 mmsh_protocol_select="http_protocol"
2181 mmst_protocol_select="network"
2182 rtmp_protocol_deps="!librtmp_protocol"
2183 rtmp_protocol_select="tcp_protocol"
2184 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2185 rtmps_protocol_deps="!librtmp_protocol"
2186 rtmps_protocol_select="tls_protocol"
2187 rtmpt_protocol_select="ffrtmphttp_protocol"
2188 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2189 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2190 rtp_protocol_select="udp_protocol"
2191 sctp_protocol_deps="struct_sctp_event_subscribe"
2192 sctp_protocol_select="network"
2193 srtp_protocol_select="rtp_protocol"
2194 tcp_protocol_select="network"
2195 tls_protocol_deps_any="openssl gnutls"
2196 tls_protocol_select="tcp_protocol"
2197 udp_protocol_select="network"
2198 unix_protocol_deps="sys_un_h"
2199 unix_protocol_select="network"
2200
2201 # filters
2202 aconvert_filter_deps="swresample"
2203 amovie_filter_deps="avcodec avformat"
2204 aresample_filter_deps="swresample"
2205 ass_filter_deps="libass"
2206 asyncts_filter_deps="avresample"
2207 atempo_filter_deps="avcodec"
2208 atempo_filter_select="rdft"
2209 azmq_filter_deps="libzmq"
2210 blackframe_filter_deps="gpl"
2211 boxblur_filter_deps="gpl"
2212 colormatrix_filter_deps="gpl"
2213 cropdetect_filter_deps="gpl"
2214 dctdnoiz_filter_deps="avcodec"
2215 dctdnoiz_filter_select="fft"
2216 delogo_filter_deps="gpl"
2217 deshake_filter_deps="avcodec"
2218 deshake_filter_select="dsputil"
2219 drawtext_filter_deps="libfreetype"
2220 ebur128_filter_deps="gpl"
2221 flite_filter_deps="libflite"
2222 frei0r_filter_deps="frei0r dlopen"
2223 frei0r_filter_extralibs='$ldl'
2224 frei0r_src_filter_deps="frei0r dlopen"
2225 frei0r_src_filter_extralibs='$ldl'
2226 geq_filter_deps="gpl"
2227 histeq_filter_deps="gpl"
2228 hqdn3d_filter_deps="gpl"
2229 interlace_filter_deps="gpl"
2230 kerndeint_filter_deps="gpl"
2231 ladspa_filter_deps="ladspa dlopen"
2232 mcdeint_filter_deps="avcodec gpl"
2233 movie_filter_deps="avcodec avformat"
2234 mp_filter_deps="gpl avcodec swscale inline_asm"
2235 mpdecimate_filter_deps="gpl avcodec"
2236 mptestsrc_filter_deps="gpl"
2237 negate_filter_deps="lut_filter"
2238 perspective_filter_deps="gpl"
2239 resample_filter_deps="avresample"
2240 ocv_filter_deps="libopencv"
2241 owdenoise_filter_deps="gpl"
2242 pan_filter_deps="swresample"
2243 phase_filter_deps="gpl"
2244 pp_filter_deps="gpl postproc"
2245 pullup_filter_deps="gpl"
2246 removelogo_filter_deps="avcodec avformat swscale"
2247 sab_filter_deps="gpl swscale"
2248 scale_filter_deps="swscale"
2249 smartblur_filter_deps="gpl swscale"
2250 showspectrum_filter_deps="avcodec"
2251 showspectrum_filter_select="rdft"
2252 spp_filter_deps="gpl avcodec"
2253 spp_filter_select="fft"
2254 stereo3d_filter_deps="gpl"
2255 subtitles_filter_deps="avformat avcodec libass"
2256 super2xsai_filter_deps="gpl"
2257 tinterlace_filter_deps="gpl"
2258 vidstabdetect_filter_deps="libvidstab"
2259 vidstabtransform_filter_deps="libvidstab"
2260 yadif_filter_deps="gpl"
2261 pixfmts_super2xsai_test_deps="super2xsai_filter"
2262 tinterlace_merge_test_deps="tinterlace_filter"
2263 tinterlace_pad_test_deps="tinterlace_filter"
2264 zmq_filter_deps="libzmq"
2265
2266 # libraries
2267 avcodec_deps="avutil"
2268 avdevice_deps="avutil avcodec avformat"
2269 avfilter_deps="avutil"
2270 avformat_deps="avutil avcodec"
2271 avresample_deps="avutil"
2272 postproc_deps="avutil gpl"
2273 swscale_deps="avutil"
2274
2275 # programs
2276 ffmpeg_deps="avcodec avfilter avformat swresample"
2277 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2278                null_filter
2279                setpts_filter trim_filter"
2280 ffplay_deps="avcodec avformat swscale swresample sdl"
2281 ffplay_select="rdft crop_filter"
2282 ffprobe_deps="avcodec avformat"
2283 ffserver_deps="avformat fork sarestart"
2284 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2285 ffserver_extralibs='$ldl'
2286
2287 # documentation
2288 podpages_deps="perl"
2289 manpages_deps="perl pod2man"
2290 htmlpages_deps="texi2html"
2291 txtpages_deps="makeinfo"
2292 doc_deps_any="manpages htmlpages podpages txtpages"
2293
2294 # default parameters
2295
2296 logfile="config.log"
2297
2298 # installation paths
2299 prefix_default="/usr/local"
2300 bindir_default='${prefix}/bin'
2301 datadir_default='${prefix}/share/ffmpeg'
2302 docdir_default='${prefix}/share/doc/ffmpeg'
2303 incdir_default='${prefix}/include'
2304 libdir_default='${prefix}/lib'
2305 mandir_default='${prefix}/share/man'
2306 shlibdir_default="$libdir_default"
2307
2308 # toolchain
2309 ar_default="ar"
2310 cc_default="gcc"
2311 cxx_default="g++"
2312 host_cc_default="gcc"
2313 cp_f="cp -f"
2314 install="install"
2315 ln_s="ln -s -f"
2316 nm_default="nm -g"
2317 objformat="elf"
2318 pkg_config_default=pkg-config
2319 ranlib="ranlib"
2320 strip_default="strip"
2321 yasmexe_default="yasm"
2322
2323 nogas=":"
2324
2325 # machine
2326 arch_default=$(uname -m)
2327 cpu="generic"
2328
2329 # OS
2330 target_os_default=$(tolower $(uname -s))
2331 host_os=$target_os_default
2332
2333 # configurable options
2334 enable $PROGRAM_LIST
2335 enable $DOCUMENT_LIST
2336 enable $(filter_out avresample $LIBRARY_LIST)
2337 enable stripping
2338
2339 enable asm
2340 enable debug
2341 enable doc
2342 enable optimizations
2343 enable runtime_cpudetect
2344 enable safe_bitstream_reader
2345 enable static
2346 enable swscale_alpha
2347
2348 # Enable hwaccels by default.
2349 enable dxva2 vaapi vdpau
2350
2351 # build settings
2352 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2353 LIBPREF="lib"
2354 LIBSUF=".a"
2355 FULLNAME='$(NAME)$(BUILDSUF)'
2356 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2357 SLIBPREF="lib"
2358 SLIBSUF=".so"
2359 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2360 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2361 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2362 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2363 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2364 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2365
2366 asflags_filter=echo
2367 cflags_filter=echo
2368 ldflags_filter=echo
2369
2370 AS_C='-c'
2371 AS_O='-o $@'
2372 CC_C='-c'
2373 CC_E='-E -o $@'
2374 CC_O='-o $@'
2375 CXX_C='-c'
2376 CXX_O='-o $@'
2377 LD_O='-o $@'
2378 LD_LIB='-l%'
2379 LD_PATH='-L'
2380 HOSTCC_C='-c'
2381 HOSTCC_O='-o $@'
2382 HOSTLD_O='-o $@'
2383
2384 host_cflags='-O3 -g'
2385 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2386 host_libs='-lm'
2387 host_cflags_filter=echo
2388 host_ldflags_filter=echo
2389
2390 target_path='$(CURDIR)'
2391
2392 # since the object filename is not given with the -MM flag, the compiler
2393 # is only able to print the basename, and we must add the path ourselves
2394 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2395 DEPFLAGS='-MM'
2396
2397 # find source path
2398 if test -f configure; then
2399     source_path=.
2400 else
2401     source_path=$(cd $(dirname "$0"); pwd)
2402     echo "$source_path" | grep -q '[[:blank:]]' &&
2403         die "Out of tree builds are impossible with whitespace in source path."
2404     test -e "$source_path/config.h" &&
2405         die "Out of tree builds are impossible with config.h in source dir."
2406 fi
2407
2408 for v in "$@"; do
2409     r=${v#*=}
2410     l=${v%"$r"}
2411     r=$(sh_quote "$r")
2412     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2413 done
2414
2415 find_things(){
2416     thing=$1
2417     pattern=$2
2418     file=$source_path/$3
2419     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2420 }
2421
2422 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2423 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2424 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2425 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2426 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2427 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2428 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2429 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2430 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2431 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2432 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2433
2434 ALL_COMPONENTS="
2435     $BSF_LIST
2436     $DECODER_LIST
2437     $DEMUXER_LIST
2438     $ENCODER_LIST
2439     $FILTER_LIST
2440     $HWACCEL_LIST
2441     $INDEV_LIST
2442     $MUXER_LIST
2443     $OUTDEV_LIST
2444     $PARSER_LIST
2445     $PROTOCOL_LIST
2446 "
2447
2448 for n in $COMPONENT_LIST; do
2449     v=$(toupper ${n%s})_LIST
2450     eval enable \$$v
2451     eval ${n}_if_any="\$$v"
2452 done
2453
2454 enable $ARCH_EXT_LIST
2455
2456 die_unknown(){
2457     echo "Unknown option \"$1\"."
2458     echo "See $0 --help for available options."
2459     exit 1
2460 }
2461
2462 print_3_columns() {
2463     cat | tr ' ' '\n' | sort | pr -r -3 -t
2464 }
2465
2466 show_list() {
2467     suffix=_$1
2468     shift
2469     echo $* | sed s/$suffix//g | print_3_columns
2470     exit 0
2471 }
2472
2473 rand_list(){
2474     IFS=', '
2475     set -- $*
2476     unset IFS
2477     for thing; do
2478         comp=${thing%:*}
2479         prob=${thing#$comp}
2480         prob=${prob#:}
2481         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2482         echo "prob ${prob:-0.5}"
2483         printf '%s\n' $comp
2484     done
2485 }
2486
2487 do_random(){
2488     action=$1
2489     shift
2490     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2491     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2492 }
2493
2494 for opt do
2495     optval="${opt#*=}"
2496     case "$opt" in
2497         --extra-ldflags=*)
2498             add_ldflags $optval
2499         ;;
2500         --extra-libs=*)
2501             add_extralibs $optval
2502         ;;
2503         --disable-devices)
2504             disable $INDEV_LIST $OUTDEV_LIST
2505         ;;
2506         --enable-debug=*)
2507             debuglevel="$optval"
2508         ;;
2509         --disable-programs)
2510             disable $PROGRAM_LIST
2511         ;;
2512         --disable-everything)
2513             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2514         ;;
2515         --disable-all)
2516             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2517             disable $LIBRARY_LIST $PROGRAM_LIST doc
2518         ;;
2519         --enable-random|--disable-random)
2520             action=${opt%%-random}
2521             do_random ${action#--} $COMPONENT_LIST
2522         ;;
2523         --enable-random=*|--disable-random=*)
2524             action=${opt%%-random=*}
2525             do_random ${action#--} $optval
2526         ;;
2527         --enable-*=*|--disable-*=*)
2528             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2529             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2530             eval list=\$$(toupper $thing)_LIST
2531             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2532             list=$(filter "$name" $list)
2533             [ "$list" = "" ] && warn "Option $opt did not match anything"
2534             $action $list
2535         ;;
2536         --enable-?*|--disable-?*)
2537             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2538             if is_in $option $COMPONENT_LIST; then
2539                 test $action = disable && action=unset
2540                 eval $action \$$(toupper ${option%s})_LIST
2541             elif is_in $option $CMDLINE_SELECT; then
2542                 $action $option
2543             else
2544                 die_unknown $opt
2545             fi
2546         ;;
2547         --list-*)
2548             NAME="${opt#--list-}"
2549             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2550             NAME=${NAME%s}
2551             eval show_list $NAME \$$(toupper $NAME)_LIST
2552         ;;
2553         --help|-h) show_help
2554         ;;
2555         --fatal-warnings) enable fatal_warnings
2556         ;;
2557         *)
2558             optname="${opt%%=*}"
2559             optname="${optname#--}"
2560             optname=$(echo "$optname" | sed 's/-/_/g')
2561             if is_in $optname $CMDLINE_SET; then
2562                 eval $optname='$optval'
2563             elif is_in $optname $CMDLINE_APPEND; then
2564                 append $optname "$optval"
2565             else
2566                 die_unknown $opt
2567             fi
2568         ;;
2569     esac
2570 done
2571
2572 disabled logging && logfile=/dev/null
2573
2574 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2575 set >> $logfile
2576
2577 test -n "$cross_prefix" && enable cross_compile
2578
2579 if enabled cross_compile; then
2580     test -n "$arch" && test -n "$target_os" ||
2581         die "Must specify target arch and OS when cross-compiling"
2582 fi
2583
2584 ar_default="${cross_prefix}${ar_default}"
2585 cc_default="${cross_prefix}${cc_default}"
2586 cxx_default="${cross_prefix}${cxx_default}"
2587 nm_default="${cross_prefix}${nm_default}"
2588 pkg_config_default="${cross_prefix}${pkg_config_default}"
2589 ranlib="${cross_prefix}${ranlib}"
2590 strip_default="${cross_prefix}${strip_default}"
2591
2592 sysinclude_default="${sysroot}/usr/include"
2593
2594 test -n "$valgrind" && toolchain="valgrind-memcheck"
2595
2596 case "$toolchain" in
2597     clang-asan)
2598         cc_default="clang"
2599         add_cflags  -fsanitize=address
2600         add_ldflags -fsanitize=address
2601     ;;
2602     clang-tsan)
2603         cc_default="clang"
2604         add_cflags  -fsanitize=thread -pie
2605         add_ldflags -fsanitize=thread -pie
2606     ;;
2607     gcc-asan)
2608         cc_default="gcc"
2609         add_cflags  -fsanitize=address
2610         add_ldflags -fsanitize=address
2611     ;;
2612     gcc-tsan)
2613         cc_default="gcc"
2614         add_cflags  -fsanitize=thread -pie -fPIC
2615         add_ldflags -fsanitize=thread -pie -fPIC
2616     ;;
2617     valgrind-massif)
2618         target_exec_default=${valgrind:-"valgrind"}
2619         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"
2620     ;;
2621     valgrind-memcheck)
2622         target_exec_default=${valgrind:-"valgrind"}
2623         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2624     ;;
2625     msvc)
2626         cc_default="c99wrap cl"
2627         ld_default="c99wrap link"
2628         nm_default="dumpbin -symbols"
2629         ar_default="lib"
2630         target_os_default="win32"
2631     ;;
2632     icl)
2633         cc_default="c99wrap -noconv icl"
2634         ld_default="c99wrap xilink"
2635         nm_default="dumpbin -symbols"
2636         ar_default="xilib"
2637         target_os_default="win32"
2638     ;;
2639     gcov)
2640         add_cflags  -fprofile-arcs -ftest-coverage
2641         add_ldflags -fprofile-arcs -ftest-coverage
2642     ;;
2643     hardened)
2644         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2645         add_ldflags -Wl,-z,relro -Wl,-z,now
2646     ;;
2647     ?*)
2648         die "Unknown toolchain $toolchain"
2649     ;;
2650 esac
2651
2652 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2653 enabled cross_compile || host_cc_default=$cc
2654 set_default host_cc
2655
2656 if ! $pkg_config --version >/dev/null 2>&1; then
2657     warn "$pkg_config not found, library detection may fail."
2658     pkg_config=false
2659 fi
2660
2661 exesuf() {
2662     case $1 in
2663         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2664     esac
2665 }
2666
2667 EXESUF=$(exesuf $target_os)
2668 HOSTEXESUF=$(exesuf $host_os)
2669
2670 # set temporary file name
2671 : ${TMPDIR:=$TEMPDIR}
2672 : ${TMPDIR:=$TMP}
2673 : ${TMPDIR:=/tmp}
2674
2675 if [ -n "$tempprefix" ] ; then
2676     mktemp(){
2677         echo $tempprefix.${HOSTNAME}.${UID}
2678     }
2679 elif ! check_cmd mktemp -u XXXXXX; then
2680     # simple replacement for missing mktemp
2681     # NOT SAFE FOR GENERAL USE
2682     mktemp(){
2683         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2684     }
2685 fi
2686
2687 tmpfile(){
2688     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2689         (set -C; exec > $tmp) 2>/dev/null ||
2690         die "Unable to create temporary file in $TMPDIR."
2691     append TMPFILES $tmp
2692     eval $1=$tmp
2693 }
2694
2695 trap 'rm -f -- $TMPFILES' EXIT
2696
2697 tmpfile TMPASM .asm
2698 tmpfile TMPC   .c
2699 tmpfile TMPCPP .cpp
2700 tmpfile TMPE   $EXESUF
2701 tmpfile TMPH   .h
2702 tmpfile TMPO   .o
2703 tmpfile TMPS   .S
2704 tmpfile TMPSH  .sh
2705 tmpfile TMPV   .ver
2706
2707 unset -f mktemp
2708
2709 chmod +x $TMPE
2710
2711 # make sure we can execute files in $TMPDIR
2712 cat > $TMPSH 2>> $logfile <<EOF
2713 #! /bin/sh
2714 EOF
2715 chmod +x $TMPSH >> $logfile 2>&1
2716 if ! $TMPSH >> $logfile 2>&1; then
2717     cat <<EOF
2718 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2719 variable to another directory and make sure that it is not mounted noexec.
2720 EOF
2721     die "Sanity test failed."
2722 fi
2723
2724 ccc_flags(){
2725     for flag; do
2726         case $flag in
2727             -std=c99)           echo -c99                       ;;
2728             -mcpu=*)            echo -arch ${flag#*=}           ;;
2729             -mieee)             echo -ieee                      ;;
2730             -O*|-fast)          echo $flag                      ;;
2731             -fno-math-errno)    echo -assume nomath_errno       ;;
2732             -g)                 echo -g3                        ;;
2733             -Wall)              echo -msg_enable level2         ;;
2734             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2735             -Wl,*)              echo $flag                      ;;
2736             -f*|-W*)                                            ;;
2737             *)                  echo $flag                      ;;
2738         esac
2739    done
2740 }
2741
2742 cparser_flags(){
2743     for flag; do
2744         case $flag in
2745             -Wno-switch)             echo -Wno-switch-enum ;;
2746             -Wno-format-zero-length) ;;
2747             -Wdisabled-optimization) ;;
2748             -Wno-pointer-sign)       echo -Wno-other ;;
2749             *)                       echo $flag ;;
2750         esac
2751     done
2752 }
2753
2754 msvc_common_flags(){
2755     for flag; do
2756         case $flag in
2757             # In addition to specifying certain flags under the compiler
2758             # specific filters, they must be specified here as well or else the
2759             # generic catch all at the bottom will print the original flag.
2760             -Wall)                ;;
2761             -std=c99)             ;;
2762             # Common flags
2763             -fomit-frame-pointer) ;;
2764             -g)                   echo -Z7 ;;
2765             -fno-math-errno)      ;;
2766             -fno-common)          ;;
2767             -fno-signed-zeros)    ;;
2768             -fPIC)                ;;
2769             -mthumb)              ;;
2770             -march=*)             ;;
2771             -lz)                  echo zlib.lib ;;
2772             -lavifil32)           echo vfw32.lib ;;
2773             -lavicap32)           echo vfw32.lib user32.lib ;;
2774             -l*)                  echo ${flag#-l}.lib ;;
2775             *)                    echo $flag ;;
2776         esac
2777     done
2778 }
2779
2780 msvc_flags(){
2781     msvc_common_flags "$@"
2782     for flag; do
2783         case $flag in
2784             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2785                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2786                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2787                                        -wd4554 \
2788                                        -wd4273 ;;
2789         esac
2790     done
2791 }
2792
2793 icl_flags(){
2794     msvc_common_flags "$@"
2795     for flag; do
2796         case $flag in
2797             # Despite what Intel's documentation says -Wall, which is supported
2798             # on Windows, does enable remarks so disable them here.
2799             -Wall)                echo $flag -Qdiag-disable:remark ;;
2800             -std=c99)             echo -Qstd=c99 ;;
2801         esac
2802     done
2803 }
2804
2805 pgi_flags(){
2806     for flag; do
2807         case $flag in
2808             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2809             -fomit-frame-pointer) echo -Mnoframe ;;
2810             -g)                   echo -gopt ;;
2811             *)                    echo $flag ;;
2812         esac
2813     done
2814 }
2815
2816 suncc_flags(){
2817     for flag; do
2818         case $flag in
2819             -march=*|-mcpu=*)
2820                 case "${flag#*=}" in
2821                     native)                   echo -xtarget=native       ;;
2822                     v9|niagara)               echo -xarch=sparc          ;;
2823                     ultrasparc)               echo -xarch=sparcvis       ;;
2824                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2825                     i586|pentium)             echo -xchip=pentium        ;;
2826                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2827                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2828                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2829                     pentium4*)          echo -xtarget=pentium4           ;;
2830                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2831                     *-sse3)             echo -xarch=sse3                 ;;
2832                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2833                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2834                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2835                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2836                     bdver*)                    echo -xarch=avx           ;;
2837                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2838                     k8|opteron|athlon64|athlon-fx)
2839                                                echo -xarch=sse2a         ;;
2840                     athlon*)                   echo -xarch=pentium_proa  ;;
2841                 esac
2842                 ;;
2843             -std=c99)             echo -xc99              ;;
2844             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2845             -fPIC)                echo -KPIC -xcode=pic32 ;;
2846             -W*,*)                echo $flag              ;;
2847             -f*-*|-W*|-mimpure-text)                      ;;
2848             -shared)              echo -G                 ;;
2849             *)                    echo $flag              ;;
2850         esac
2851     done
2852 }
2853
2854 tms470_flags(){
2855     for flag; do
2856         case $flag in
2857             -march=*|-mcpu=*)
2858                 case "${flag#*=}" in
2859                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2860                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2861                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2862                     armv6*|arm11*)          echo -mv=6   ;;
2863                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2864                                             echo -mv=5e  ;;
2865                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2866                 esac
2867                 ;;
2868             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2869             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2870             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2871             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2872             -msoft-float)   echo --float_support=vfplib       ;;
2873             -O[0-3]|-mf=*)  echo $flag                        ;;
2874             -g)             echo -g -mn                       ;;
2875             -pds=*)         echo $flag                        ;;
2876             -D*|-I*)        echo $flag                        ;;
2877             --gcc|--abi=*)  echo $flag                        ;;
2878             -me)            echo $flag                        ;;
2879         esac
2880     done
2881 }
2882
2883 probe_cc(){
2884     pfx=$1
2885     _cc=$2
2886
2887     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2888     unset _ld_o _ldflags _ld_lib _ld_path
2889     unset _depflags _DEPCMD _DEPFLAGS
2890     _flags_filter=echo
2891
2892     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2893         true # no-op to avoid reading stdin in following checks
2894     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2895         _type=llvm_gcc
2896         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2897         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2899         _cflags_speed='-O3'
2900         _cflags_size='-Os'
2901     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2902         _type=gcc
2903         gcc_version=$($_cc --version | head -n1)
2904         gcc_basever=$($_cc -dumpversion)
2905         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2906         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2907         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2908         if ! $_cc -dumpversion | grep -q '^2\.'; then
2909             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2910         fi
2911         _cflags_speed='-O3'
2912         _cflags_size='-Os'
2913     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2914         _type=icc
2915         _ident=$($_cc --version | head -n1)
2916         _depflags='-MMD'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919         _cflags_noopt='-O1'
2920     elif $_cc -v 2>&1 | grep -q xlc; then
2921         _type=xlc
2922         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2923         _cflags_speed='-O5'
2924         _cflags_size='-O5 -qcompact'
2925     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2926         _type=ccc
2927         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2928         _DEPFLAGS='-M'
2929         _cflags_speed='-fast'
2930         _cflags_size='-O1'
2931         _flags_filter=ccc_flags
2932     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2933         test -d "$sysroot" || die "No valid sysroot specified."
2934         _type=armcc
2935         _ident=$($_cc --vsn | head -n1)
2936         armcc_conf="$PWD/armcc.conf"
2937         $_cc --arm_linux_configure                 \
2938              --arm_linux_config_file="$armcc_conf" \
2939              --configure_sysroot="$sysroot"        \
2940              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2941              die "Error creating armcc configuration file."
2942         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2943         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2944         as_default="${cross_prefix}gcc"
2945         _depflags='-MMD'
2946         _cflags_speed='-O3'
2947         _cflags_size='-Os'
2948     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2949         _type=tms470
2950         _ident=$($_cc -version | head -n1 | tr -s ' ')
2951         _flags='--gcc --abi=eabi -me'
2952         _cc_e='-ppl -fe=$@'
2953         _cc_o='-fe=$@'
2954         _depflags='-ppa -ppd=$(@:.o=.d)'
2955         _cflags_speed='-O3 -mf=5'
2956         _cflags_size='-O3 -mf=2'
2957         _flags_filter=tms470_flags
2958     elif $_cc -v 2>&1 | grep -q clang; then
2959         _type=clang
2960         _ident=$($_cc --version | head -n1)
2961         _depflags='-MMD'
2962         _cflags_speed='-O3'
2963         _cflags_size='-Os'
2964     elif $_cc -V 2>&1 | grep -q Sun; then
2965         _type=suncc
2966         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2967         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2968         _DEPFLAGS='-xM1 -xc99'
2969         _ldflags='-std=c99'
2970         _cflags_speed='-O5'
2971         _cflags_size='-O5 -xspace'
2972         _flags_filter=suncc_flags
2973     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2974         _type=pathscale
2975         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2976         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2977         _cflags_speed='-O2'
2978         _cflags_size='-Os'
2979         _flags_filter='filter_out -Wdisabled-optimization'
2980     elif $_cc -v 2>&1 | grep -q Open64; then
2981         _type=open64
2982         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2984         _cflags_speed='-O2'
2985         _cflags_size='-Os'
2986         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2987     elif $_cc -V 2>&1 | grep -q Portland; then
2988         _type=pgi
2989         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2990         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2991         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2992         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2993         _cflags_noopt="-O"
2994         _flags_filter=pgi_flags
2995     elif $_cc 2>&1 | grep -q Microsoft; then
2996         _type=msvc
2997         _ident=$($cc 2>&1 | head -n1)
2998         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2999         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3000         _cflags_speed="-O2"
3001         _cflags_size="-O1"
3002         # Nonstandard output options, to avoid msys path conversion issues.
3003         # Relies on wrapper to remap it.
3004         if $_cc 2>&1 | grep -q Linker; then
3005             _ld_o='-out $@'
3006         else
3007             _ld_o='-Fe$@'
3008         fi
3009         _cc_o='-Fo $@'
3010         _cc_e='-P -Fi $@'
3011         _flags_filter=msvc_flags
3012         _ld_lib='lib%.a'
3013         _ld_path='-libpath:'
3014         _flags='-nologo'
3015         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3016         if [ $pfx = hostcc ]; then
3017             append _cflags -Dsnprintf=_snprintf
3018         fi
3019         disable stripping
3020     elif $_cc 2>&1 | grep -q Intel; then
3021         _type=icl
3022         _ident=$($cc 2>&1 | head -n1)
3023         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3024         # Not only is O3 broken on 13.x+ but it is slower on all previous
3025         # versions (tested) as well.
3026         _cflags_speed="-O2"
3027         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3028         # Nonstandard output options, to avoid msys path conversion issues.
3029         # Relies on wrapper to remap it.
3030         if $_cc 2>&1 | grep -q Linker; then
3031             _ld_o='-out $@'
3032         else
3033             _ld_o='-Fe$@'
3034         fi
3035         _cc_o='-Fo $@'
3036         _cc_e='-P'
3037         _flags_filter=icl_flags
3038         _ld_lib='lib%.a'
3039         _ld_path='-libpath:'
3040         # -Qdiag-error to make icl error when seeing certain unknown arguments
3041         _flags='-nologo -Qdiag-error:4044,10157'
3042         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3043         # with MSVC which enables it by default.
3044         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3045         if [ $pfx = hostcc ]; then
3046             append _cflags -Dsnprintf=_snprintf
3047         fi
3048     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3049         _type=cparser
3050         _ident=$($_cc --version | head -n1)
3051         _depflags='-MMD'
3052         _cflags_speed='-O4'
3053         _cflags_size='-O2'
3054         _flags_filter=cparser_flags
3055     fi
3056
3057     eval ${pfx}_type=\$_type
3058     eval ${pfx}_ident=\$_ident
3059 }
3060
3061 set_ccvars(){
3062     eval ${1}_C=\${_cc_c-\${${1}_C}}
3063     eval ${1}_E=\${_cc_e-\${${1}_E}}
3064     eval ${1}_O=\${_cc_o-\${${1}_O}}
3065
3066     if [ -n "$_depflags" ]; then
3067         eval ${1}_DEPFLAGS=\$_depflags
3068     else
3069         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3070         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3071         eval DEP${1}FLAGS=\$_flags
3072     fi
3073 }
3074
3075 probe_cc cc "$cc"
3076 cflags_filter=$_flags_filter
3077 cflags_speed=$_cflags_speed
3078 cflags_size=$_cflags_size
3079 cflags_noopt=$_cflags_noopt
3080 add_cflags $_flags $_cflags
3081 cc_ldflags=$_ldflags
3082 set_ccvars CC
3083
3084 probe_cc hostcc "$host_cc"
3085 host_cflags_filter=$_flags_filter
3086 add_host_cflags  $_flags $_cflags
3087 set_ccvars HOSTCC
3088
3089 test -n "$cc_type" && enable $cc_type ||
3090     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3091
3092 : ${as_default:=$cc}
3093 : ${dep_cc_default:=$cc}
3094 : ${ld_default:=$cc}
3095 : ${host_ld_default:=$host_cc}
3096 set_default ar as dep_cc ld host_ld
3097
3098 probe_cc as "$as"
3099 asflags_filter=$_flags_filter
3100 add_asflags $_flags $_cflags
3101 set_ccvars AS
3102
3103 probe_cc ld "$ld"
3104 ldflags_filter=$_flags_filter
3105 add_ldflags $_flags $_ldflags
3106 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3107 LD_O=${_ld_o-$LD_O}
3108 LD_LIB=${_ld_lib-$LD_LIB}
3109 LD_PATH=${_ld_path-$LD_PATH}
3110
3111 probe_cc hostld "$host_ld"
3112 host_ldflags_filter=$_flags_filter
3113 add_host_ldflags $_flags $_ldflags
3114 HOSTLD_O=${_ld_o-$HOSTLD_O}
3115
3116 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3117     probe_cc depcc "$dep_cc"
3118     CCDEP=${_DEPCMD:-$DEPCMD}
3119     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3120     DEPCCFLAGS=$_flags
3121 fi
3122
3123 if $ar 2>&1 | grep -q Microsoft; then
3124     arflags="-nologo"
3125     ar_o='-out:$@'
3126 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3127     arflags="rq"
3128     ar_o='$@'
3129 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3130     arflags='-Xany -r -c'
3131     ar_o='$@'
3132 else
3133     arflags="rc"
3134     ar_o='$@'
3135 fi
3136
3137 add_cflags $extra_cflags
3138 add_cxxflags $extra_cxxflags
3139 add_asflags $extra_cflags
3140
3141 if test -n "$sysroot"; then
3142     case "$cc_type" in
3143         gcc|llvm_gcc|clang)
3144             add_cppflags --sysroot="$sysroot"
3145             add_ldflags --sysroot="$sysroot"
3146         ;;
3147         tms470)
3148             add_cppflags -I"$sysinclude"
3149             add_ldflags  --sysroot="$sysroot"
3150         ;;
3151     esac
3152 fi
3153
3154 if test "$cpu" = host; then
3155     enabled cross_compile &&
3156         die "--cpu=host makes no sense when cross-compiling."
3157
3158     case "$cc_type" in
3159         gcc|llvm_gcc)
3160             check_native(){
3161                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3162                 sed -n "/cc1.*$1=/{
3163                             s/.*$1=\\([^ ]*\\).*/\\1/
3164                             p
3165                             q
3166                         }" $TMPE
3167             }
3168             cpu=$(check_native -march || check_native -mcpu)
3169         ;;
3170     esac
3171
3172     test "${cpu:-host}" = host &&
3173         die "--cpu=host not supported with compiler $cc"
3174 fi
3175
3176 # Deal with common $arch aliases
3177 case "$arch" in
3178     aarch64|arm64)
3179         arch="aarch64"
3180     ;;
3181     arm*|iPad*|iPhone*)
3182         arch="arm"
3183     ;;
3184     mips*|IP*)
3185         arch="mips"
3186     ;;
3187     parisc*|hppa*)
3188         arch="parisc"
3189     ;;
3190     "Power Macintosh"|ppc*|powerpc*)
3191         arch="ppc"
3192     ;;
3193     s390|s390x)
3194         arch="s390"
3195     ;;
3196     sh4|sh)
3197         arch="sh4"
3198     ;;
3199     sun4u|sparc*)
3200         arch="sparc"
3201     ;;
3202     tilegx|tile-gx)
3203         arch="tilegx"
3204     ;;
3205     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3206         arch="x86"
3207     ;;
3208 esac
3209
3210 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3211 enable $arch
3212
3213 # Add processor-specific flags
3214 if enabled aarch64; then
3215
3216     case $cpu in
3217         armv*)
3218             cpuflags="-march=$cpu"
3219         ;;
3220         *)
3221             cpuflags="-mcpu=$cpu"
3222         ;;
3223     esac
3224
3225 elif enabled alpha; then
3226
3227     cpuflags="-mcpu=$cpu"
3228
3229 elif enabled arm; then
3230
3231     check_arm_arch() {
3232         check_cpp_condition stddef.h \
3233             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3234             $cpuflags
3235     }
3236
3237     probe_arm_arch() {
3238         if   check_arm_arch 4;        then echo armv4;
3239         elif check_arm_arch 4T;       then echo armv4t;
3240         elif check_arm_arch 5;        then echo armv5;
3241         elif check_arm_arch 5E;       then echo armv5e;
3242         elif check_arm_arch 5T;       then echo armv5t;
3243         elif check_arm_arch 5TE;      then echo armv5te;
3244         elif check_arm_arch 5TEJ;     then echo armv5te;
3245         elif check_arm_arch 6;        then echo armv6;
3246         elif check_arm_arch 6J;       then echo armv6j;
3247         elif check_arm_arch 6K;       then echo armv6k;
3248         elif check_arm_arch 6Z;       then echo armv6z;
3249         elif check_arm_arch 6ZK;      then echo armv6zk;
3250         elif check_arm_arch 6T2;      then echo armv6t2;
3251         elif check_arm_arch 7;        then echo armv7;
3252         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3253         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3254         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3255         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3256         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3257         fi
3258     }
3259
3260     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3261
3262     case $cpu in
3263         armv*)
3264             cpuflags="-march=$cpu"
3265             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3266         ;;
3267         *)
3268             cpuflags="-mcpu=$cpu"
3269             case $cpu in
3270                 cortex-a*)                               subarch=armv7a  ;;
3271                 cortex-r*)                               subarch=armv7r  ;;
3272                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3273                 arm11*)                                  subarch=armv6   ;;
3274                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3275                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3276                 *)                             subarch=$(probe_arm_arch) ;;
3277             esac
3278         ;;
3279     esac
3280
3281     case "$subarch" in
3282         armv5t*)    enable fast_clz                ;;
3283         armv[6-8]*) enable fast_clz fast_unaligned ;;
3284     esac
3285
3286 elif enabled avr32; then
3287
3288     case $cpu in
3289         ap7[02]0[0-2])
3290             subarch="avr32_ap"
3291             cpuflags="-mpart=$cpu"
3292         ;;
3293         ap)
3294             subarch="avr32_ap"
3295             cpuflags="-march=$cpu"
3296         ;;
3297         uc3[ab]*)
3298             subarch="avr32_uc"
3299             cpuflags="-mcpu=$cpu"
3300         ;;
3301         uc)
3302             subarch="avr32_uc"
3303             cpuflags="-march=$cpu"
3304         ;;
3305     esac
3306
3307 elif enabled bfin; then
3308
3309     cpuflags="-mcpu=$cpu"
3310
3311 elif enabled mips; then
3312
3313     cpuflags="-march=$cpu"
3314
3315     case $cpu in
3316         24kc)
3317             disable mipsfpu
3318             disable mipsdspr1
3319             disable mipsdspr2
3320         ;;
3321         24kf*)
3322             disable mipsdspr1
3323             disable mipsdspr2
3324         ;;
3325         24kec|34kc|1004kc)
3326             disable mipsfpu
3327             disable mipsdspr2
3328         ;;
3329         24kef*|34kf*|1004kf*)
3330             disable mipsdspr2
3331         ;;
3332         74kc)
3333             disable mipsfpu
3334         ;;
3335     esac
3336
3337 elif enabled ppc; then
3338
3339     case $(tolower $cpu) in
3340         601|ppc601|powerpc601)
3341             cpuflags="-mcpu=601"
3342             disable altivec
3343         ;;
3344         603*|ppc603*|powerpc603*)
3345             cpuflags="-mcpu=603"
3346             disable altivec
3347         ;;
3348         604*|ppc604*|powerpc604*)
3349             cpuflags="-mcpu=604"
3350             disable altivec
3351         ;;
3352         g3|75*|ppc75*|powerpc75*)
3353             cpuflags="-mcpu=750"
3354             disable altivec
3355         ;;
3356         g4|745*|ppc745*|powerpc745*)
3357             cpuflags="-mcpu=7450"
3358         ;;
3359         74*|ppc74*|powerpc74*)
3360             cpuflags="-mcpu=7400"
3361         ;;
3362         g5|970|ppc970|powerpc970)
3363             cpuflags="-mcpu=970"
3364         ;;
3365         power[3-7]*)
3366             cpuflags="-mcpu=$cpu"
3367         ;;
3368         cell)
3369             cpuflags="-mcpu=cell"
3370             enable ldbrx
3371         ;;
3372         e500mc)
3373             cpuflags="-mcpu=e500mc"
3374             disable altivec
3375         ;;
3376         e500v2)
3377             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3378             disable altivec
3379         ;;
3380         e500)
3381             cpuflags="-mcpu=8540 -mhard-float"
3382             disable altivec
3383         ;;
3384     esac
3385
3386 elif enabled sparc; then
3387
3388     case $cpu in
3389         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3390             cpuflags="-mcpu=$cpu"
3391             disable vis
3392         ;;
3393         ultrasparc*|niagara[234])
3394             cpuflags="-mcpu=$cpu"
3395         ;;
3396     esac
3397
3398 elif enabled x86; then
3399
3400     case $cpu in
3401         i[345]86|pentium)
3402             cpuflags="-march=$cpu"
3403             disable mmx
3404         ;;
3405         # targets that do NOT support nopl and conditional mov (cmov)
3406         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3407             cpuflags="-march=$cpu"
3408             disable i686
3409         ;;
3410         # targets that do support nopl and conditional mov (cmov)
3411         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3412             cpuflags="-march=$cpu"
3413             enable i686
3414             enable fast_cmov
3415         ;;
3416         # targets that do support conditional mov but on which it's slow
3417         pentium4|pentium4m|prescott|nocona)
3418             cpuflags="-march=$cpu"
3419             enable i686
3420             disable fast_cmov
3421         ;;
3422     esac
3423
3424 fi
3425
3426 if [ "$cpu" != generic ]; then
3427     add_cflags  $cpuflags
3428     add_asflags $cpuflags
3429 fi
3430
3431 # compiler sanity check
3432 check_exec <<EOF
3433 int main(void){ return 0; }
3434 EOF
3435 if test "$?" != 0; then
3436     echo "$cc is unable to create an executable file."
3437     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3438         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3439         echo "Only do this if you know what cross compiling means."
3440     fi
3441     die "C compiler test failed."
3442 fi
3443
3444 add_cppflags -D_ISOC99_SOURCE
3445 add_cxxflags -D__STDC_CONSTANT_MACROS
3446 check_cflags -std=c99
3447 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3448 #include <stdlib.h>
3449 EOF
3450 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3451 #include <stdlib.h>
3452 EOF
3453
3454 check_host_cflags -std=c99
3455 check_host_cflags -Wall
3456
3457 check_64bit(){
3458     arch32=$1
3459     arch64=$2
3460     expr=$3
3461     check_code cc "" "int test[2*($expr) - 1]" &&
3462         subarch=$arch64 || subarch=$arch32
3463 }
3464
3465 case "$arch" in
3466     aarch64|alpha|ia64)
3467         spic=$shared
3468     ;;
3469     mips)
3470         check_64bit mips mips64 '_MIPS_SIM > 1'
3471         spic=$shared
3472     ;;
3473     parisc)
3474         check_64bit parisc parisc64 'sizeof(void *) > 4'
3475         spic=$shared
3476     ;;
3477     ppc)
3478         check_64bit ppc ppc64 'sizeof(void *) > 4'
3479         spic=$shared
3480     ;;
3481     sparc)
3482         check_64bit sparc sparc64 'sizeof(void *) > 4'
3483         spic=$shared
3484     ;;
3485     x86)
3486         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3487         if test "$subarch" = "x86_64"; then
3488             spic=$shared
3489         fi
3490     ;;
3491     ppc)
3492         check_cc <<EOF && subarch="ppc64"
3493         int test[(int)sizeof(char*) - 7];
3494 EOF
3495     ;;
3496 esac
3497
3498 enable $subarch
3499 enabled spic && enable_weak pic
3500
3501 # OS specific
3502 case $target_os in
3503     aix)
3504         SHFLAGS=-shared
3505         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3506         enabled shared && add_ldflags -Wl,-brtl
3507         ;;
3508     haiku)
3509         prefix_default="/boot/common"
3510         network_extralibs="-lnetwork"
3511         host_libs=
3512         ;;
3513     sunos)
3514         SHFLAGS='-shared -Wl,-h,$$(@F)'
3515         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3516         network_extralibs="-lsocket -lnsl"
3517         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3518         # When using suncc to build, the Solaris linker will mark
3519         # an executable with each instruction set encountered by
3520         # the Solaris assembler.  As our libraries contain their own
3521         # guards for processor-specific code, instead suppress
3522         # generation of the HWCAPS ELF section on Solaris x86 only.
3523         enabled_all suncc x86 &&
3524             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3525             add_ldflags -Wl,-M,mapfile
3526         nm_default='nm -P -g'
3527         ;;
3528     netbsd)
3529         disable symver
3530         oss_indev_extralibs="-lossaudio"
3531         oss_outdev_extralibs="-lossaudio"
3532         enabled gcc || check_ldflags -Wl,-zmuldefs
3533         ;;
3534     openbsd|bitrig)
3535         disable symver
3536         SHFLAGS='-shared'
3537         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3538         SLIB_INSTALL_LINKS=
3539         oss_indev_extralibs="-lossaudio"
3540         oss_outdev_extralibs="-lossaudio"
3541         ;;
3542     dragonfly)
3543         disable symver
3544         ;;
3545     freebsd)
3546         ;;
3547     bsd/os)
3548         add_extralibs -lpoll -lgnugetopt
3549         strip="strip -d"
3550         ;;
3551     darwin)
3552         gas="gas-preprocessor.pl $cc"
3553         enabled ppc && add_asflags -force_cpusubtype_ALL
3554         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3555         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3556         strip="${strip} -x"
3557         add_ldflags -Wl,-dynamic,-search_paths_first
3558         SLIBSUF=".dylib"
3559         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3560         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3561         objformat="macho"
3562         enabled x86_64 && objformat="macho64"
3563         enabled_any pic shared ||
3564             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3565         ;;
3566     mingw32*)
3567         if test $target_os = "mingw32ce"; then
3568             disable network
3569         else
3570             target_os=mingw32
3571         fi
3572         LIBTARGET=i386
3573         if enabled x86_64; then
3574             LIBTARGET="i386:x86-64"
3575         elif enabled arm; then
3576             LIBTARGET=arm-wince
3577         fi
3578         check_ldflags -Wl,--nxcompat
3579         check_ldflags -Wl,--dynamicbase
3580         shlibdir_default="$bindir_default"
3581         SLIBPREF=""
3582         SLIBSUF=".dll"
3583         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3584         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3585         dlltool="${cross_prefix}dlltool"
3586         if check_cmd lib.exe -list; then
3587             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3588             if enabled x86_64; then
3589                 LIBTARGET=x64
3590             fi
3591         elif check_cmd $dlltool --version; then
3592             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3593         fi
3594         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3595         SLIB_INSTALL_LINKS=
3596         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3597         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3598         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3599         objformat="win32"
3600         ranlib=:
3601         enable dos_paths
3602         ;;
3603     win32|win64)
3604         if enabled shared; then
3605             # Link to the import library instead of the normal static library
3606             # for shared libs.
3607             LD_LIB='%.lib'
3608             # Cannot build both shared and static libs with MSVC or icl.
3609             disable static
3610         fi
3611         shlibdir_default="$bindir_default"
3612         SLIBPREF=""
3613         SLIBSUF=".dll"
3614         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3615         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3616         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3617         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3618         SLIB_INSTALL_LINKS=
3619         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3620         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3621         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3622         objformat="win32"
3623         ranlib=:
3624         enable dos_paths
3625         ;;
3626     cygwin*)
3627         target_os=cygwin
3628         shlibdir_default="$bindir_default"
3629         SLIBPREF="cyg"
3630         SLIBSUF=".dll"
3631         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3632         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3633         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3634         SLIB_INSTALL_LINKS=
3635         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3636         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3637         objformat="win32"
3638         enable dos_paths
3639         ;;
3640     *-dos|freedos|opendos)
3641         network_extralibs="-lsocket"
3642         objformat="coff"
3643         enable dos_paths
3644         add_cppflags -U__STRICT_ANSI__
3645         ;;
3646     linux)
3647         enable dv1394
3648         ;;
3649     irix*)
3650         target_os=irix
3651         ranlib="echo ignoring ranlib"
3652         ;;
3653     os/2*)
3654         strip="lxlite -CS"
3655         ln_s="cp -f"
3656         objformat="aout"
3657         add_cppflags -D_GNU_SOURCE
3658         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3659         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3660         LIBSUF="_s.a"
3661         SLIBPREF=""
3662         SLIBSUF=".dll"
3663         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3664         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3665         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3666             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3667             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3668             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3669             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3670             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3671         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3672             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3673         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3674         enable dos_paths
3675         enable_weak os2threads
3676         ;;
3677     gnu/kfreebsd)
3678         add_cppflags -D_BSD_SOURCE
3679         ;;
3680     gnu)
3681         ;;
3682     qnx)
3683         add_cppflags -D_QNX_SOURCE
3684         network_extralibs="-lsocket"
3685         ;;
3686     symbian)
3687         SLIBSUF=".dll"
3688         enable dos_paths
3689         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3690         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3691         add_ldflags -Wl,--target1-abs,--no-undefined \
3692                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3693                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3694         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3695                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3696                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3697         ;;
3698     osf1)
3699         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3700         ;;
3701     minix)
3702         ;;
3703     plan9)
3704         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3705                      -D_REENTRANT_SOURCE        \
3706                      -D_RESEARCH_SOURCE         \
3707                      -DFD_SETSIZE=96            \
3708                      -DHAVE_SOCK_OPTS
3709         add_compat strtod.o strtod=avpriv_strtod
3710         network_extralibs='-lbsd'
3711         exeobjs=compat/plan9/main.o
3712         disable ffserver
3713         cp_f='cp'
3714         ;;
3715     none)
3716         ;;
3717     *)
3718         die "Unknown OS '$target_os'."
3719         ;;
3720 esac
3721
3722 # determine libc flavour
3723
3724 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3725 if check_cpp_condition features.h "defined __UCLIBC__"; then
3726     libc_type=uclibc
3727     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3728 elif check_cpp_condition features.h "defined __GLIBC__"; then
3729     libc_type=glibc
3730     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3731 # MinGW headers can be installed on Cygwin, so check for newlib first.
3732 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3733     libc_type=newlib
3734     add_cppflags -U__STRICT_ANSI__
3735 elif check_header _mingw.h; then
3736     libc_type=mingw
3737     check_cpp_condition _mingw.h \
3738         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3739             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3740         die "ERROR: MinGW runtime version must be >= 3.15."
3741     add_cppflags -U__STRICT_ANSI__
3742     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3743             __MINGW64_VERSION_MAJOR < 3"; then
3744         add_compat msvcrt/snprintf.o
3745         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3746     else
3747         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3748     fi
3749 elif check_func_headers stdlib.h _get_doserrno; then
3750     libc_type=msvcrt
3751     add_compat strtod.o strtod=avpriv_strtod
3752     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3753                                  _snprintf=avpriv_snprintf  \
3754                                  vsnprintf=avpriv_vsnprintf
3755     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3756     # 0x601 by default unless something else is set by the user.
3757     # This can easily lead to us detecting functions only present
3758     # in such new versions and producing binaries requiring windows 7.0.
3759     # Therefore explicitly set the default to XP unless the user has
3760     # set something else on the command line.
3761     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3762 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3763     libc_type=klibc
3764 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3765     libc_type=bionic
3766     add_compat strtod.o strtod=avpriv_strtod
3767 fi
3768
3769 test -n "$libc_type" && enable $libc_type
3770
3771 # hacks for compiler/libc/os combinations
3772
3773 if enabled_all tms470 glibc; then
3774     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3775     add_cppflags -D__USER_LABEL_PREFIX__=
3776     add_cppflags -D__builtin_memset=memset
3777     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3778     add_cflags   -pds=48    # incompatible redefinition of macro
3779 fi
3780
3781 if enabled_all ccc glibc; then
3782     add_ldflags -Wl,-z,now  # calls to libots crash without this
3783 fi
3784
3785 esc(){
3786     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3787 }
3788
3789 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3790
3791 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3792
3793 set_default $PATHS_LIST
3794 set_default nm
3795
3796 # we need to build at least one lib type
3797 if ! enabled_any static shared; then
3798     cat <<EOF
3799 At least one library type must be built.
3800 Specify --enable-static to build the static libraries or --enable-shared to
3801 build the shared libraries as well. To only build the shared libraries specify
3802 --disable-static in addition to --enable-shared.
3803 EOF
3804     exit 1;
3805 fi
3806
3807 # backward compatibility layer for incompatible_libav/fork_abi
3808 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3809 enabled incompatible_libav_abi && enable incompatible_fork_abi
3810
3811 die_license_disabled() {
3812     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3813 }
3814
3815 die_license_disabled_gpl() {
3816     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3817 }
3818
3819 die_license_disabled gpl frei0r
3820 die_license_disabled gpl libcdio
3821 die_license_disabled gpl libutvideo
3822 die_license_disabled gpl libvidstab
3823 die_license_disabled gpl libx264
3824 die_license_disabled gpl libxavs
3825 die_license_disabled gpl libxvid
3826 die_license_disabled gpl libzvbi
3827 die_license_disabled gpl x11grab
3828
3829 die_license_disabled nonfree libaacplus
3830 die_license_disabled nonfree libfaac
3831 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3832 enabled gpl && die_license_disabled_gpl nonfree openssl
3833
3834 die_license_disabled version3 libopencore_amrnb
3835 die_license_disabled version3 libopencore_amrwb
3836 die_license_disabled version3 libvo_aacenc
3837 die_license_disabled version3 libvo_amrwbenc
3838
3839 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3840
3841 disabled optimizations || check_cflags -fomit-frame-pointer
3842
3843 enable_weak_pic() {
3844     disabled pic && return
3845     enable pic
3846     add_cppflags -DPIC
3847     case "$target_os" in
3848     mingw*|cygwin*)
3849         ;;
3850     *)
3851         add_cflags -fPIC
3852         ;;
3853     esac
3854     add_asflags  -fPIC
3855 }
3856
3857 enabled pic && enable_weak_pic
3858
3859 check_cc <<EOF || die "Symbol mangling check failed."
3860 int ff_extern;
3861 EOF
3862 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3863 extern_prefix=${sym%%ff_extern*}
3864
3865 check_cc <<EOF && enable_weak inline_asm
3866 void foo(void) { __asm__ volatile ("" ::); }
3867 EOF
3868
3869 _restrict=
3870 for restrict_keyword in restrict __restrict__ __restrict; do
3871     check_cc <<EOF && _restrict=$restrict_keyword && break
3872 void foo(char * $restrict_keyword p);
3873 EOF
3874 done
3875
3876 check_cc <<EOF && enable pragma_deprecated
3877 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3878 EOF
3879
3880 check_cc <<EOF && enable attribute_packed
3881 struct { int x; } __attribute__((packed)) x;
3882 EOF
3883
3884 check_cc <<EOF && enable attribute_may_alias
3885 union { int x; } __attribute__((may_alias)) x;
3886 EOF
3887
3888 check_cc <<EOF || die "endian test failed"
3889 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3890 EOF
3891 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3892
3893 check_inline_asm inline_asm_labels '"1:\n"'
3894
3895 if enabled alpha; then
3896
3897     check_cflags -mieee
3898
3899 elif enabled arm; then
3900
3901     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3902 float func(float a, float b){ return a+b; }
3903 EOF
3904
3905     enabled thumb && check_cflags -mthumb || check_cflags -marm
3906     nogas=die
3907
3908     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3909         enable vfp_args
3910     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3911         case "${cross_prefix:-$cc}" in
3912             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3913             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3914 __asm__ (".eabi_attribute 28, 1");
3915 int main(void) { return 0; }
3916 EOF
3917         esac
3918         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3919     fi
3920
3921     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3922     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3923     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3924     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3925     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3926     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3927
3928     [ $target_os = linux ] ||
3929         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3930             $ARCH_EXT_LIST_ARM
3931
3932     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3933     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3934
3935     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3936
3937 elif enabled mips; then
3938
3939     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3940     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3941      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3942     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3943      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3944     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3945      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3946     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3947      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3948
3949 elif enabled parisc; then
3950
3951     if enabled gcc; then
3952         case $($cc -dumpversion) in
3953             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3954         esac
3955     fi
3956
3957 elif enabled ppc; then
3958
3959     enable local_aligned_8 local_aligned_16
3960
3961     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3962     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3963     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3964     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3965
3966     # AltiVec flags: The FSF version of GCC differs from the Apple version
3967     if enabled altivec; then
3968         if ! enabled_any pic ppc64; then
3969             nogas=warn
3970         fi
3971         check_cflags -maltivec -mabi=altivec &&
3972         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3973         check_cflags -faltivec
3974
3975         # check if our compiler supports Motorola AltiVec C API
3976         check_cc <<EOF || disable altivec
3977 $inc_altivec_h
3978 int main(void) {
3979     vector signed int v1 = (vector signed int) { 0 };
3980     vector signed int v2 = (vector signed int) { 1 };
3981     v1 = vec_add(v1, v2);
3982     return 0;
3983 }
3984 EOF
3985
3986         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3987     fi
3988
3989 elif enabled sparc; then
3990
3991     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3992
3993 elif enabled x86; then
3994
3995     check_builtin rdtsc    intrin.h   "__rdtsc()"
3996     check_builtin mm_empty mmintrin.h "_mm_empty()"
3997
3998     enable local_aligned_8 local_aligned_16
3999
4000     # check whether EBP is available on x86
4001     # As 'i' is stored on the stack, this program will crash
4002     # if the base pointer is used to access it because the
4003     # base pointer is cleared in the inline assembly code.
4004     check_exec_crash <<EOF && enable ebp_available
4005 volatile int i=0;
4006 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4007 return i;
4008 EOF
4009
4010     # check whether EBX is available on x86
4011     check_inline_asm ebx_available '""::"b"(0)' &&
4012         check_inline_asm ebx_available '"":::"%ebx"'
4013
4014     # check whether xmm clobbers are supported
4015     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4016
4017     # check whether binutils is new enough to compile SSSE3/MMXEXT
4018     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4019     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4020
4021     if ! disabled_any asm mmx yasm; then
4022         if check_cmd $yasmexe --version; then
4023             enabled x86_64 && yasm_extra="-m amd64"
4024             yasm_debug="-g dwarf2"
4025         elif check_cmd nasm -v; then
4026             yasmexe=nasm
4027             yasm_debug="-g -F dwarf"
4028             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4029         fi
4030
4031         YASMFLAGS="-f $objformat $yasm_extra"
4032         enabled pic               && append YASMFLAGS "-DPIC"
4033         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4034         case "$objformat" in
4035             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4036         esac
4037
4038         check_yasm "movbe ecx, [5]" && enable yasm ||
4039             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."