a60784ff2022bbb6cee4294f44331221ae8fbf3d
[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     h264chroma
1580     h264dsp
1581     h264pred
1582     h264qpel
1583     hpeldsp
1584     huffman
1585     lgplv3
1586     lpc
1587     mpegaudio
1588     mpegaudiodsp
1589     mpegvideo
1590     mpegvideoenc
1591     nettle
1592     rangecoder
1593     riffdec
1594     riffenc
1595     rtpdec
1596     rtpenc_chain
1597     sinewin
1598     videodsp
1599     vp3dsp
1600 "
1601
1602 CMDLINE_SELECT="
1603     $ARCH_EXT_LIST
1604     $CONFIG_LIST
1605     $HAVE_LIST_CMDLINE
1606     $THREADS_LIST
1607     asm
1608     cross_compile
1609     debug
1610     extra_warnings
1611     logging
1612     lto
1613     optimizations
1614     stripping
1615 "
1616
1617 PATHS_LIST='
1618     bindir
1619     datadir
1620     docdir
1621     incdir
1622     libdir
1623     mandir
1624     prefix
1625     shlibdir
1626 '
1627
1628 CMDLINE_SET="
1629     $PATHS_LIST
1630     ar
1631     arch
1632     as
1633     assert_level
1634     build_suffix
1635     cc
1636     cpu
1637     cross_prefix
1638     cxx
1639     dep_cc
1640     extra_version
1641     host_cc
1642     host_cflags
1643     host_ld
1644     host_ldflags
1645     host_libs
1646     host_os
1647     install
1648     ld
1649     logfile
1650     malloc_prefix
1651     nm
1652     optflags
1653     pkg_config
1654     progs_suffix
1655     random_seed
1656     samples
1657     strip
1658     sysinclude
1659     sysroot
1660     target_exec
1661     target_os
1662     target_path
1663     target_samples
1664     tempprefix
1665     toolchain
1666     valgrind
1667     yasmexe
1668 "
1669
1670 CMDLINE_APPEND="
1671     extra_cflags
1672     extra_cxxflags
1673     host_cppflags
1674 "
1675
1676 # code dependency declarations
1677
1678 # architecture extensions
1679
1680 armv5te_deps="arm"
1681 armv6_deps="arm"
1682 armv6t2_deps="arm"
1683 neon_deps="arm"
1684 vfp_deps="arm"
1685 vfpv3_deps="vfp"
1686
1687 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1688
1689 mipsfpu_deps="mips"
1690 mips32r2_deps="mips"
1691 mipsdspr1_deps="mips"
1692 mipsdspr2_deps="mips"
1693
1694 altivec_deps="ppc"
1695 ppc4xx_deps="ppc"
1696
1697 vis_deps="sparc"
1698
1699 cpunop_deps="i686"
1700 x86_64_select="i686"
1701 x86_64_suggest="fast_cmov"
1702
1703 amd3dnow_deps="mmx"
1704 amd3dnowext_deps="amd3dnow"
1705 mmx_deps="x86"
1706 mmxext_deps="mmx"
1707 sse_deps="mmxext"
1708 sse2_deps="sse"
1709 sse3_deps="sse2"
1710 ssse3_deps="sse3"
1711 sse4_deps="ssse3"
1712 sse42_deps="sse4"
1713 avx_deps="sse42"
1714 fma4_deps="avx"
1715 avx2_deps="avx"
1716
1717 mmx_external_deps="yasm"
1718 mmx_inline_deps="inline_asm"
1719 mmx_suggest="mmx_external mmx_inline"
1720
1721 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1722     eval dep=\$${ext}_deps
1723     eval ${ext}_external_deps='"${dep}_external"'
1724     eval ${ext}_inline_deps='"${dep}_inline"'
1725     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1726 done
1727
1728 aligned_stack_if_any="ppc x86"
1729 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1730 fast_clz_if_any="alpha avr32 mips ppc x86"
1731 fast_unaligned_if_any="ppc x86"
1732
1733 inline_asm_deps="!tms470"
1734 need_memalign="altivec neon sse"
1735
1736 symver_if_any="symver_asm_label symver_gnu_asm"
1737
1738 log2_deps="!msvcrt"
1739
1740 # subsystems
1741 dct_select="rdft"
1742 error_resilience_select="dsputil"
1743 frame_thread_encoder_deps="encoders threads"
1744 lpc_select="dsputil"
1745 mdct_select="fft"
1746 rdft_select="fft"
1747 mpegaudio_select="mpegaudiodsp"
1748 mpegaudiodsp_select="dct"
1749 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1750 mpegvideoenc_select="mpegvideo"
1751
1752 # decoders / encoders
1753 aac_decoder_select="mdct sinewin"
1754 aac_encoder_select="audio_frame_queue mdct sinewin"
1755 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1756 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1757 ac3_encoder_select="mdct ac3dsp dsputil"
1758 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1759 aic_decoder_select="dsputil golomb"
1760 alac_encoder_select="lpc"
1761 als_decoder_select="dsputil"
1762 amrnb_decoder_select="lsp"
1763 amrwb_decoder_select="lsp"
1764 amv_decoder_select="dsputil hpeldsp exif"
1765 amv_encoder_select="aandcttables"
1766 ape_decoder_select="dsputil"
1767 asv1_decoder_select="dsputil"
1768 asv1_encoder_select="dsputil"
1769 asv2_decoder_select="dsputil"
1770 asv2_encoder_select="dsputil"
1771 atrac1_decoder_select="mdct sinewin"
1772 atrac3_decoder_select="mdct"
1773 avrn_decoder_select="exif"
1774 bink_decoder_select="dsputil hpeldsp"
1775 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1776 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1777 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1778 cllc_decoder_select="dsputil"
1779 comfortnoise_encoder_select="lpc"
1780 cook_decoder_select="dsputil mdct sinewin"
1781 cscd_decoder_select="lzo"
1782 cscd_decoder_suggest="zlib"
1783 dca_decoder_select="mdct"
1784 dirac_decoder_select="dsputil dwt golomb videodsp"
1785 dnxhd_decoder_select="dsputil"
1786 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1787 dvvideo_decoder_select="dsputil"
1788 dvvideo_encoder_select="dsputil"
1789 dxa_decoder_select="zlib"
1790 eac3_decoder_select="ac3_decoder"
1791 eac3_encoder_select="ac3_encoder"
1792 eamad_decoder_select="aandcttables dsputil mpegvideo"
1793 eatgq_decoder_select="aandcttables"
1794 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1795 exr_decoder_select="zlib"
1796 ffv1_decoder_select="dsputil golomb rangecoder"
1797 ffv1_encoder_select="dsputil rangecoder"
1798 ffvhuff_decoder_select="dsputil"
1799 ffvhuff_encoder_select="dsputil huffman"
1800 flac_decoder_select="golomb"
1801 flac_encoder_select="dsputil golomb lpc"
1802 flashsv_decoder_select="zlib"
1803 flashsv_encoder_select="zlib"
1804 flashsv2_encoder_select="zlib"
1805 flashsv2_decoder_select="zlib"
1806 flv_decoder_select="h263_decoder"
1807 flv_encoder_select="h263_encoder"
1808 fourxm_decoder_select="dsputil"
1809 fraps_decoder_select="dsputil huffman"
1810 g2m_decoder_select="dsputil zlib"
1811 g729_decoder_select="dsputil"
1812 h261_decoder_select="error_resilience mpegvideo"
1813 h261_encoder_select="aandcttables mpegvideoenc"
1814 h263_decoder_select="error_resilience h263_parser mpegvideo"
1815 h263_encoder_select="aandcttables mpegvideoenc"
1816 h263i_decoder_select="h263_decoder"
1817 h263p_encoder_select="h263_encoder"
1818 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1819 h264_decoder_suggest="error_resilience"
1820 hevc_decoder_select="dsputil golomb videodsp"
1821 huffyuv_decoder_select="dsputil"
1822 huffyuv_encoder_select="dsputil huffman"
1823 iac_decoder_select="dsputil fft mdct sinewin"
1824 imc_decoder_select="dsputil fft mdct sinewin"
1825 indeo3_decoder_select="hpeldsp"
1826 interplay_video_decoder_select="hpeldsp"
1827 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1828 jpegls_encoder_select="golomb"
1829 jv_decoder_select="dsputil"
1830 lagarith_decoder_select="dsputil"
1831 ljpeg_encoder_select="aandcttables mpegvideoenc"
1832 loco_decoder_select="golomb"
1833 mdec_decoder_select="dsputil error_resilience mpegvideo"
1834 metasound_decoder_select="lsp mdct sinewin"
1835 mimic_decoder_select="dsputil hpeldsp"
1836 mjpeg_decoder_select="dsputil hpeldsp exif"
1837 mjpegb_decoder_select="dsputil hpeldsp exif"
1838 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1839 mlp_decoder_select="dsputil mlp_parser"
1840 motionpixels_decoder_select="dsputil"
1841 mp1_decoder_select="mpegaudio"
1842 mp1float_decoder_select="mpegaudio"
1843 mp2_decoder_select="mpegaudio"
1844 mp2float_decoder_select="mpegaudio"
1845 mp3_decoder_select="mpegaudio"
1846 mp3adu_decoder_select="mpegaudio"
1847 mp3adufloat_decoder_select="mpegaudio"
1848 mp3float_decoder_select="mpegaudio"
1849 mp3on4_decoder_select="mpegaudio"
1850 mp3on4float_decoder_select="mpegaudio"
1851 mpc7_decoder_select="dsputil mpegaudiodsp"
1852 mpc8_decoder_select="dsputil mpegaudiodsp"
1853 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1854 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1855 mpeg1video_decoder_select="error_resilience mpegvideo"
1856 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1857 mpeg2video_decoder_select="error_resilience mpegvideo"
1858 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1859 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1860 mpeg4_encoder_select="h263_encoder"
1861 msmpeg4v1_decoder_select="h263_decoder"
1862 msmpeg4v2_decoder_select="h263_decoder"
1863 msmpeg4v2_encoder_select="h263_encoder"
1864 msmpeg4v3_decoder_select="h263_decoder"
1865 msmpeg4v3_encoder_select="h263_encoder"
1866 mss2_decoder_select="error_resilience vc1_decoder"
1867 mxpeg_decoder_select="dsputil hpeldsp exif"
1868 nellymoser_decoder_select="mdct sinewin"
1869 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1870 nuv_decoder_select="dsputil lzo"
1871 png_decoder_select="zlib"
1872 png_encoder_select="dsputil zlib"
1873 prores_decoder_select="dsputil"
1874 prores_encoder_select="dsputil"
1875 qcelp_decoder_select="lsp"
1876 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1877 ra_144_encoder_select="audio_frame_queue lpc"
1878 ralf_decoder_select="golomb"
1879 rtjpeg_decoder_select="dsputil"
1880 rv10_decoder_select="error_resilience h263_decoder"
1881 rv10_encoder_select="h263_encoder"
1882 rv20_decoder_select="error_resilience h263_decoder"
1883 rv20_encoder_select="h263_encoder"
1884 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1885 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1886 shorten_decoder_select="golomb"
1887 sipr_decoder_select="lsp"
1888 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1889 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1890 sonic_decoder_select="golomb"
1891 sonic_encoder_select="golomb"
1892 sonic_ls_encoder_select="golomb"
1893 sp5x_decoder_select="dsputil hpeldsp exif"
1894 svq1_decoder_select="hpeldsp"
1895 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1896 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1897 svq3_decoder_suggest="error_resilience zlib"
1898 tak_decoder_select="dsputil"
1899 theora_decoder_select="vp3_decoder"
1900 tiff_decoder_suggest="zlib"
1901 tiff_encoder_suggest="zlib"
1902 thp_decoder_select="dsputil hpeldsp exif"
1903 truehd_decoder_select="mlp_parser"
1904 truemotion2_decoder_select="dsputil"
1905 truespeech_decoder_select="dsputil"
1906 tscc_decoder_select="zlib"
1907 twinvq_decoder_select="mdct lsp sinewin"
1908 utvideo_decoder_select="dsputil"
1909 utvideo_encoder_select="dsputil huffman"
1910 vble_decoder_select="dsputil"
1911 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1912 vc1image_decoder_select="vc1_decoder"
1913 vorbis_decoder_select="mdct"
1914 vorbis_encoder_select="mdct"
1915 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1916 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1917 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1918 vp6a_decoder_select="vp6_decoder"
1919 vp6f_decoder_select="vp6_decoder"
1920 vp8_decoder_select="h264pred videodsp"
1921 vp9_decoder_select="videodsp"
1922 webp_decoder_select="vp8_decoder"
1923 wmapro_decoder_select="mdct sinewin"
1924 wmav1_decoder_select="mdct sinewin"
1925 wmav1_encoder_select="mdct sinewin"
1926 wmav2_decoder_select="mdct sinewin"
1927 wmav2_encoder_select="mdct sinewin"
1928 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1929 wmv1_decoder_select="h263_decoder"
1930 wmv1_encoder_select="h263_encoder"
1931 wmv2_decoder_select="h263_decoder videodsp"
1932 wmv2_encoder_select="h263_encoder"
1933 wmv3_decoder_select="vc1_decoder"
1934 wmv3image_decoder_select="wmv3_decoder"
1935 zerocodec_decoder_select="zlib"
1936 zlib_decoder_select="zlib"
1937 zlib_encoder_select="zlib"
1938 zmbv_decoder_select="zlib"
1939 zmbv_encoder_select="zlib"
1940
1941 # hardware accelerators
1942 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1943 dxva2_deps="dxva2api_h"
1944 vaapi_deps="va_va_h"
1945 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1946 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1947 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1948
1949 h263_vaapi_hwaccel_deps="vaapi"
1950 h263_vaapi_hwaccel_select="h263_decoder"
1951 h263_vdpau_hwaccel_deps="vdpau"
1952 h263_vdpau_hwaccel_select="h263_decoder"
1953 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1954 h264_dxva2_hwaccel_deps="dxva2"
1955 h264_dxva2_hwaccel_select="h264_decoder"
1956 h264_vaapi_hwaccel_deps="vaapi"
1957 h264_vaapi_hwaccel_select="h264_decoder"
1958 h264_vda_decoder_deps="vda"
1959 h264_vda_decoder_select="h264_decoder"
1960 h264_vda_hwaccel_deps="vda"
1961 h264_vda_hwaccel_select="h264_decoder"
1962 h264_vdpau_decoder_deps="vdpau"
1963 h264_vdpau_decoder_select="h264_decoder"
1964 h264_vdpau_hwaccel_deps="vdpau"
1965 h264_vdpau_hwaccel_select="h264_decoder"
1966 mpeg_vdpau_decoder_deps="vdpau"
1967 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1968 mpeg1_vdpau_decoder_deps="vdpau"
1969 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1970 mpeg1_vdpau_hwaccel_deps="vdpau"
1971 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1972 mpeg2_crystalhd_decoder_select="crystalhd"
1973 mpeg2_dxva2_hwaccel_deps="dxva2"
1974 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1975 mpeg2_vaapi_hwaccel_deps="vaapi"
1976 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1977 mpeg2_vdpau_hwaccel_deps="vdpau"
1978 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1979 mpeg4_crystalhd_decoder_select="crystalhd"
1980 mpeg4_vaapi_hwaccel_deps="vaapi"
1981 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1982 mpeg4_vdpau_decoder_deps="vdpau"
1983 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1984 mpeg4_vdpau_hwaccel_deps="vdpau"
1985 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1986 msmpeg4_crystalhd_decoder_select="crystalhd"
1987 vc1_crystalhd_decoder_select="crystalhd"
1988 vc1_dxva2_hwaccel_deps="dxva2"
1989 vc1_dxva2_hwaccel_select="vc1_decoder"
1990 vc1_vaapi_hwaccel_deps="vaapi"
1991 vc1_vaapi_hwaccel_select="vc1_decoder"
1992 vc1_vdpau_decoder_deps="vdpau"
1993 vc1_vdpau_decoder_select="vc1_decoder"
1994 vc1_vdpau_hwaccel_deps="vdpau"
1995 vc1_vdpau_hwaccel_select="vc1_decoder"
1996 wmv3_crystalhd_decoder_select="crystalhd"
1997 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1998 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1999 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2000 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2001
2002 # parsers
2003 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2004 mpeg4video_parser_select="error_resilience mpegvideo"
2005 mpegvideo_parser_select="error_resilience mpegvideo"
2006 vc1_parser_select="mpegvideo"
2007
2008 # external libraries
2009 libaacplus_encoder_deps="libaacplus"
2010 libcelt_decoder_deps="libcelt"
2011 libfaac_encoder_deps="libfaac"
2012 libfaac_encoder_select="audio_frame_queue"
2013 libfdk_aac_decoder_deps="libfdk_aac"
2014 libfdk_aac_encoder_deps="libfdk_aac"
2015 libfdk_aac_encoder_select="audio_frame_queue"
2016 libgme_demuxer_deps="libgme"
2017 libgsm_decoder_deps="libgsm"
2018 libgsm_encoder_deps="libgsm"
2019 libgsm_ms_decoder_deps="libgsm"
2020 libgsm_ms_encoder_deps="libgsm"
2021 libilbc_decoder_deps="libilbc"
2022 libilbc_encoder_deps="libilbc"
2023 libmodplug_demuxer_deps="libmodplug"
2024 libmp3lame_encoder_deps="libmp3lame"
2025 libmp3lame_encoder_select="audio_frame_queue"
2026 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2027 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2028 libopencore_amrnb_encoder_select="audio_frame_queue"
2029 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2030 libopenjpeg_decoder_deps="libopenjpeg"
2031 libopenjpeg_encoder_deps="libopenjpeg"
2032 libopus_decoder_deps="libopus"
2033 libopus_encoder_deps="libopus"
2034 libopus_encoder_select="audio_frame_queue"
2035 libquvi_demuxer_deps="libquvi"
2036 libschroedinger_decoder_deps="libschroedinger"
2037 libschroedinger_encoder_deps="libschroedinger"
2038 libshine_encoder_deps="libshine"
2039 libshine_encoder_select="audio_frame_queue"
2040 libspeex_decoder_deps="libspeex"
2041 libspeex_encoder_deps="libspeex"
2042 libspeex_encoder_select="audio_frame_queue"
2043 libstagefright_h264_decoder_deps="libstagefright_h264"
2044 libtheora_encoder_deps="libtheora"
2045 libtwolame_encoder_deps="libtwolame"
2046 libvo_aacenc_encoder_deps="libvo_aacenc"
2047 libvo_aacenc_encoder_select="audio_frame_queue"
2048 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2049 libvorbis_decoder_deps="libvorbis"
2050 libvorbis_encoder_deps="libvorbis"
2051 libvorbis_encoder_select="audio_frame_queue"
2052 libvpx_vp8_decoder_deps="libvpx"
2053 libvpx_vp8_encoder_deps="libvpx"
2054 libvpx_vp9_decoder_deps="libvpx"
2055 libvpx_vp9_encoder_deps="libvpx"
2056 libwavpack_encoder_deps="libwavpack"
2057 libx264_encoder_deps="libx264"
2058 libx264rgb_encoder_deps="libx264"
2059 libxavs_encoder_deps="libxavs"
2060 libxvid_encoder_deps="libxvid"
2061 libutvideo_decoder_deps="libutvideo"
2062 libutvideo_encoder_deps="libutvideo"
2063 libzvbi_teletext_decoder_deps="libzvbi"
2064
2065 # demuxers / muxers
2066 ac3_demuxer_select="ac3_parser"
2067 asf_demuxer_select="riffdec"
2068 asf_muxer_select="riffenc"
2069 asf_stream_muxer_select="asf_muxer"
2070 avi_demuxer_select="riffdec"
2071 avi_muxer_select="riffenc"
2072 avisynth_demuxer_deps="avisynth"
2073 avisynth_demuxer_select="riffdec"
2074 caf_demuxer_select="riffdec"
2075 dirac_demuxer_select="dirac_parser"
2076 dts_demuxer_select="dca_parser"
2077 dtshd_demuxer_select="dca_parser"
2078 dxa_demuxer_select="riffdec"
2079 eac3_demuxer_select="ac3_parser"
2080 f4v_muxer_select="mov_muxer"
2081 flac_demuxer_select="flac_parser"
2082 hds_muxer_select="flv_muxer"
2083 hls_muxer_select="mpegts_muxer"
2084 ipod_muxer_select="mov_muxer"
2085 ismv_muxer_select="mov_muxer"
2086 libnut_demuxer_deps="libnut"
2087 libnut_muxer_deps="libnut"
2088 matroska_audio_muxer_select="matroska_muxer"
2089 matroska_demuxer_select="riffdec"
2090 matroska_demuxer_suggest="bzlib lzo zlib"
2091 matroska_muxer_select="riffenc"
2092 mmf_muxer_select="riffenc"
2093 mov_demuxer_select="riffdec"
2094 mov_demuxer_suggest="zlib"
2095 mov_muxer_select="riffenc rtpenc_chain"
2096 mp3_demuxer_select="mpegaudio_parser"
2097 mp4_muxer_select="mov_muxer"
2098 mpegts_muxer_select="adts_muxer latm_muxer"
2099 mpegtsraw_demuxer_select="mpegts_demuxer"
2100 mxf_d10_muxer_select="mxf_muxer"
2101 nut_muxer_select="riffenc"
2102 nuv_demuxer_select="riffdec"
2103 ogg_demuxer_select="golomb"
2104 psp_muxer_select="mov_muxer"
2105 rtp_demuxer_select="sdp_demuxer"
2106 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2107 rtsp_demuxer_select="http_protocol rtpdec"
2108 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2109 sap_demuxer_select="sdp_demuxer"
2110 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2111 sdp_demuxer_select="rtpdec"
2112 smoothstreaming_muxer_select="ismv_muxer"
2113 spdif_muxer_select="aac_parser"
2114 tak_demuxer_select="tak_parser"
2115 tg2_muxer_select="mov_muxer"
2116 tgp_muxer_select="mov_muxer"
2117 vobsub_demuxer_select="mpegps_demuxer"
2118 w64_demuxer_select="wav_demuxer"
2119 w64_muxer_select="wav_muxer"
2120 wav_demuxer_select="riffdec"
2121 wav_muxer_select="riffenc"
2122 webm_muxer_select="riffenc"
2123 wtv_demuxer_select="riffdec"
2124 xmv_demuxer_select="riffdec"
2125 xwma_demuxer_select="riffdec"
2126
2127 # indevs / outdevs
2128 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2129 alsa_outdev_deps="alsa_asoundlib_h"
2130 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2131 caca_outdev_deps="libcaca"
2132 dshow_indev_deps="IBaseFilter"
2133 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2134 dv1394_indev_deps="dv1394"
2135 dv1394_indev_select="dv_demuxer"
2136 fbdev_indev_deps="linux_fb_h"
2137 fbdev_outdev_deps="linux_fb_h"
2138 iec61883_indev_deps="libiec61883"
2139 jack_indev_deps="jack_jack_h sem_timedwait"
2140 lavfi_indev_deps="avfilter"
2141 libcdio_indev_deps="libcdio"
2142 libdc1394_indev_deps="libdc1394"
2143 libv4l2_indev_deps="libv4l2"
2144 openal_indev_deps="openal"
2145 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2146 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2147 pulse_indev_deps="libpulse"
2148 pulse_outdev_deps="libpulse"
2149 sdl_outdev_deps="sdl"
2150 sndio_indev_deps="sndio_h"
2151 sndio_outdev_deps="sndio_h"
2152 v4l_indev_deps="linux_videodev_h"
2153 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2154 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2155 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2156 vfwcap_indev_extralibs="-lavicap32"
2157 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2158 xv_outdev_extralibs="-lXv -lX11 -lXext"
2159 x11grab_indev_deps="x11grab"
2160
2161 # protocols
2162 bluray_protocol_deps="libbluray"
2163 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2164 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2165 ffrtmpcrypt_protocol_select="tcp_protocol"
2166 ffrtmphttp_protocol_deps="!librtmp_protocol"
2167 ffrtmphttp_protocol_select="http_protocol"
2168 ftp_protocol_select="tcp_protocol"
2169 gopher_protocol_select="network"
2170 httpproxy_protocol_select="tcp_protocol"
2171 http_protocol_select="tcp_protocol"
2172 https_protocol_select="tls_protocol"
2173 librtmp_protocol_deps="librtmp"
2174 librtmpe_protocol_deps="librtmp"
2175 librtmps_protocol_deps="librtmp"
2176 librtmpt_protocol_deps="librtmp"
2177 librtmpte_protocol_deps="librtmp"
2178 libssh_protocol_deps="libssh"
2179 mmsh_protocol_select="http_protocol"
2180 mmst_protocol_select="network"
2181 rtmp_protocol_deps="!librtmp_protocol"
2182 rtmp_protocol_select="tcp_protocol"
2183 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2184 rtmps_protocol_deps="!librtmp_protocol"
2185 rtmps_protocol_select="tls_protocol"
2186 rtmpt_protocol_select="ffrtmphttp_protocol"
2187 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2188 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2189 rtp_protocol_select="udp_protocol"
2190 sctp_protocol_deps="struct_sctp_event_subscribe"
2191 sctp_protocol_select="network"
2192 srtp_protocol_select="rtp_protocol"
2193 tcp_protocol_select="network"
2194 tls_protocol_deps_any="openssl gnutls"
2195 tls_protocol_select="tcp_protocol"
2196 udp_protocol_select="network"
2197 unix_protocol_deps="sys_un_h"
2198 unix_protocol_select="network"
2199
2200 # filters
2201 aconvert_filter_deps="swresample"
2202 amovie_filter_deps="avcodec avformat"
2203 aresample_filter_deps="swresample"
2204 ass_filter_deps="libass"
2205 asyncts_filter_deps="avresample"
2206 atempo_filter_deps="avcodec"
2207 atempo_filter_select="rdft"
2208 azmq_filter_deps="libzmq"
2209 blackframe_filter_deps="gpl"
2210 boxblur_filter_deps="gpl"
2211 colormatrix_filter_deps="gpl"
2212 cropdetect_filter_deps="gpl"
2213 dctdnoiz_filter_deps="avcodec"
2214 dctdnoiz_filter_select="fft"
2215 delogo_filter_deps="gpl"
2216 deshake_filter_deps="avcodec"
2217 deshake_filter_select="dsputil"
2218 drawtext_filter_deps="libfreetype"
2219 ebur128_filter_deps="gpl"
2220 flite_filter_deps="libflite"
2221 frei0r_filter_deps="frei0r dlopen"
2222 frei0r_filter_extralibs='$ldl'
2223 frei0r_src_filter_deps="frei0r dlopen"
2224 frei0r_src_filter_extralibs='$ldl'
2225 geq_filter_deps="gpl"
2226 histeq_filter_deps="gpl"
2227 hqdn3d_filter_deps="gpl"
2228 interlace_filter_deps="gpl"
2229 kerndeint_filter_deps="gpl"
2230 ladspa_filter_deps="ladspa dlopen"
2231 mcdeint_filter_deps="avcodec gpl"
2232 movie_filter_deps="avcodec avformat"
2233 mp_filter_deps="gpl avcodec swscale inline_asm"
2234 mpdecimate_filter_deps="gpl avcodec"
2235 mptestsrc_filter_deps="gpl"
2236 negate_filter_deps="lut_filter"
2237 perspective_filter_deps="gpl"
2238 resample_filter_deps="avresample"
2239 ocv_filter_deps="libopencv"
2240 owdenoise_filter_deps="gpl"
2241 pan_filter_deps="swresample"
2242 phase_filter_deps="gpl"
2243 pp_filter_deps="gpl postproc"
2244 pullup_filter_deps="gpl"
2245 removelogo_filter_deps="avcodec avformat swscale"
2246 sab_filter_deps="gpl swscale"
2247 scale_filter_deps="swscale"
2248 smartblur_filter_deps="gpl swscale"
2249 showspectrum_filter_deps="avcodec"
2250 showspectrum_filter_select="rdft"
2251 spp_filter_deps="gpl avcodec"
2252 spp_filter_select="fft"
2253 stereo3d_filter_deps="gpl"
2254 subtitles_filter_deps="avformat avcodec libass"
2255 super2xsai_filter_deps="gpl"
2256 tinterlace_filter_deps="gpl"
2257 vidstabdetect_filter_deps="libvidstab"
2258 vidstabtransform_filter_deps="libvidstab"
2259 yadif_filter_deps="gpl"
2260 pixfmts_super2xsai_test_deps="super2xsai_filter"
2261 tinterlace_merge_test_deps="tinterlace_filter"
2262 tinterlace_pad_test_deps="tinterlace_filter"
2263 zmq_filter_deps="libzmq"
2264
2265 # libraries
2266 avcodec_deps="avutil"
2267 avdevice_deps="avutil avcodec avformat"
2268 avfilter_deps="avutil"
2269 avformat_deps="avutil avcodec"
2270 avresample_deps="avutil"
2271 postproc_deps="avutil gpl"
2272 swscale_deps="avutil"
2273
2274 # programs
2275 ffmpeg_deps="avcodec avfilter avformat swresample"
2276 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2277                null_filter
2278                setpts_filter trim_filter"
2279 ffplay_deps="avcodec avformat swscale swresample sdl"
2280 ffplay_select="rdft crop_filter"
2281 ffprobe_deps="avcodec avformat"
2282 ffserver_deps="avformat fork sarestart"
2283 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2284 ffserver_extralibs='$ldl'
2285
2286 # documentation
2287 podpages_deps="perl"
2288 manpages_deps="perl pod2man"
2289 htmlpages_deps="texi2html"
2290 txtpages_deps="makeinfo"
2291 doc_deps_any="manpages htmlpages podpages txtpages"
2292
2293 # default parameters
2294
2295 logfile="config.log"
2296
2297 # installation paths
2298 prefix_default="/usr/local"
2299 bindir_default='${prefix}/bin'
2300 datadir_default='${prefix}/share/ffmpeg'
2301 docdir_default='${prefix}/share/doc/ffmpeg'
2302 incdir_default='${prefix}/include'
2303 libdir_default='${prefix}/lib'
2304 mandir_default='${prefix}/share/man'
2305 shlibdir_default="$libdir_default"
2306
2307 # toolchain
2308 ar_default="ar"
2309 cc_default="gcc"
2310 cxx_default="g++"
2311 host_cc_default="gcc"
2312 cp_f="cp -f"
2313 install="install"
2314 ln_s="ln -s -f"
2315 nm_default="nm -g"
2316 objformat="elf"
2317 pkg_config_default=pkg-config
2318 ranlib="ranlib"
2319 strip_default="strip"
2320 yasmexe_default="yasm"
2321
2322 nogas=":"
2323
2324 # machine
2325 arch_default=$(uname -m)
2326 cpu="generic"
2327
2328 # OS
2329 target_os_default=$(tolower $(uname -s))
2330 host_os=$target_os_default
2331
2332 # configurable options
2333 enable $PROGRAM_LIST
2334 enable $DOCUMENT_LIST
2335 enable $(filter_out avresample $LIBRARY_LIST)
2336 enable stripping
2337
2338 enable asm
2339 enable debug
2340 enable doc
2341 enable optimizations
2342 enable runtime_cpudetect
2343 enable safe_bitstream_reader
2344 enable static
2345 enable swscale_alpha
2346
2347 # Enable hwaccels by default.
2348 enable dxva2 vaapi vdpau
2349
2350 # build settings
2351 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2352 LIBPREF="lib"
2353 LIBSUF=".a"
2354 FULLNAME='$(NAME)$(BUILDSUF)'
2355 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2356 SLIBPREF="lib"
2357 SLIBSUF=".so"
2358 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2359 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2360 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2361 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2362 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2363 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2364
2365 asflags_filter=echo
2366 cflags_filter=echo
2367 ldflags_filter=echo
2368
2369 AS_C='-c'
2370 AS_O='-o $@'
2371 CC_C='-c'
2372 CC_E='-E -o $@'
2373 CC_O='-o $@'
2374 CXX_C='-c'
2375 CXX_O='-o $@'
2376 LD_O='-o $@'
2377 LD_LIB='-l%'
2378 LD_PATH='-L'
2379 HOSTCC_C='-c'
2380 HOSTCC_O='-o $@'
2381 HOSTLD_O='-o $@'
2382
2383 host_cflags='-O3 -g'
2384 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2385 host_libs='-lm'
2386 host_cflags_filter=echo
2387 host_ldflags_filter=echo
2388
2389 target_path='$(CURDIR)'
2390
2391 # since the object filename is not given with the -MM flag, the compiler
2392 # is only able to print the basename, and we must add the path ourselves
2393 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2394 DEPFLAGS='-MM'
2395
2396 # find source path
2397 if test -f configure; then
2398     source_path=.
2399 else
2400     source_path=$(cd $(dirname "$0"); pwd)
2401     echo "$source_path" | grep -q '[[:blank:]]' &&
2402         die "Out of tree builds are impossible with whitespace in source path."
2403     test -e "$source_path/config.h" &&
2404         die "Out of tree builds are impossible with config.h in source dir."
2405 fi
2406
2407 for v in "$@"; do
2408     r=${v#*=}
2409     l=${v%"$r"}
2410     r=$(sh_quote "$r")
2411     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2412 done
2413
2414 find_things(){
2415     thing=$1
2416     pattern=$2
2417     file=$source_path/$3
2418     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2419 }
2420
2421 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2422 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2423 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2424 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2425 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2426 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2427 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2428 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2429 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2430 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2431 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2432
2433 ALL_COMPONENTS="
2434     $BSF_LIST
2435     $DECODER_LIST
2436     $DEMUXER_LIST
2437     $ENCODER_LIST
2438     $FILTER_LIST
2439     $HWACCEL_LIST
2440     $INDEV_LIST
2441     $MUXER_LIST
2442     $OUTDEV_LIST
2443     $PARSER_LIST
2444     $PROTOCOL_LIST
2445 "
2446
2447 for n in $COMPONENT_LIST; do
2448     v=$(toupper ${n%s})_LIST
2449     eval enable \$$v
2450     eval ${n}_if_any="\$$v"
2451 done
2452
2453 enable $ARCH_EXT_LIST
2454
2455 die_unknown(){
2456     echo "Unknown option \"$1\"."
2457     echo "See $0 --help for available options."
2458     exit 1
2459 }
2460
2461 print_3_columns() {
2462     cat | tr ' ' '\n' | sort | pr -r -3 -t
2463 }
2464
2465 show_list() {
2466     suffix=_$1
2467     shift
2468     echo $* | sed s/$suffix//g | print_3_columns
2469     exit 0
2470 }
2471
2472 rand_list(){
2473     IFS=', '
2474     set -- $*
2475     unset IFS
2476     for thing; do
2477         comp=${thing%:*}
2478         prob=${thing#$comp}
2479         prob=${prob#:}
2480         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2481         echo "prob ${prob:-0.5}"
2482         printf '%s\n' $comp
2483     done
2484 }
2485
2486 do_random(){
2487     action=$1
2488     shift
2489     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2490     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2491 }
2492
2493 for opt do
2494     optval="${opt#*=}"
2495     case "$opt" in
2496         --extra-ldflags=*)
2497             add_ldflags $optval
2498         ;;
2499         --extra-libs=*)
2500             add_extralibs $optval
2501         ;;
2502         --disable-devices)
2503             disable $INDEV_LIST $OUTDEV_LIST
2504         ;;
2505         --enable-debug=*)
2506             debuglevel="$optval"
2507         ;;
2508         --disable-programs)
2509             disable $PROGRAM_LIST
2510         ;;
2511         --disable-everything)
2512             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2513         ;;
2514         --disable-all)
2515             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2516             disable $LIBRARY_LIST $PROGRAM_LIST doc
2517         ;;
2518         --enable-random|--disable-random)
2519             action=${opt%%-random}
2520             do_random ${action#--} $COMPONENT_LIST
2521         ;;
2522         --enable-random=*|--disable-random=*)
2523             action=${opt%%-random=*}
2524             do_random ${action#--} $optval
2525         ;;
2526         --enable-*=*|--disable-*=*)
2527             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2528             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2529             eval list=\$$(toupper $thing)_LIST
2530             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2531             list=$(filter "$name" $list)
2532             [ "$list" = "" ] && warn "Option $opt did not match anything"
2533             $action $list
2534         ;;
2535         --enable-?*|--disable-?*)
2536             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2537             if is_in $option $COMPONENT_LIST; then
2538                 test $action = disable && action=unset
2539                 eval $action \$$(toupper ${option%s})_LIST
2540             elif is_in $option $CMDLINE_SELECT; then
2541                 $action $option
2542             else
2543                 die_unknown $opt
2544             fi
2545         ;;
2546         --list-*)
2547             NAME="${opt#--list-}"
2548             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2549             NAME=${NAME%s}
2550             eval show_list $NAME \$$(toupper $NAME)_LIST
2551         ;;
2552         --help|-h) show_help
2553         ;;
2554         --fatal-warnings) enable fatal_warnings
2555         ;;
2556         *)
2557             optname="${opt%%=*}"
2558             optname="${optname#--}"
2559             optname=$(echo "$optname" | sed 's/-/_/g')
2560             if is_in $optname $CMDLINE_SET; then
2561                 eval $optname='$optval'
2562             elif is_in $optname $CMDLINE_APPEND; then
2563                 append $optname "$optval"
2564             else
2565                 die_unknown $opt
2566             fi
2567         ;;
2568     esac
2569 done
2570
2571 disabled logging && logfile=/dev/null
2572
2573 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2574 set >> $logfile
2575
2576 test -n "$cross_prefix" && enable cross_compile
2577
2578 if enabled cross_compile; then
2579     test -n "$arch" && test -n "$target_os" ||
2580         die "Must specify target arch and OS when cross-compiling"
2581 fi
2582
2583 ar_default="${cross_prefix}${ar_default}"
2584 cc_default="${cross_prefix}${cc_default}"
2585 cxx_default="${cross_prefix}${cxx_default}"
2586 nm_default="${cross_prefix}${nm_default}"
2587 pkg_config_default="${cross_prefix}${pkg_config_default}"
2588 ranlib="${cross_prefix}${ranlib}"
2589 strip_default="${cross_prefix}${strip_default}"
2590
2591 sysinclude_default="${sysroot}/usr/include"
2592
2593 test -n "$valgrind" && toolchain="valgrind-memcheck"
2594
2595 case "$toolchain" in
2596     clang-asan)
2597         cc_default="clang"
2598         add_cflags  -fsanitize=address
2599         add_ldflags -fsanitize=address
2600     ;;
2601     clang-tsan)
2602         cc_default="clang"
2603         add_cflags  -fsanitize=thread -pie
2604         add_ldflags -fsanitize=thread -pie
2605     ;;
2606     gcc-asan)
2607         cc_default="gcc"
2608         add_cflags  -fsanitize=address
2609         add_ldflags -fsanitize=address
2610     ;;
2611     gcc-tsan)
2612         cc_default="gcc"
2613         add_cflags  -fsanitize=thread -pie -fPIC
2614         add_ldflags -fsanitize=thread -pie -fPIC
2615     ;;
2616     valgrind-massif)
2617         target_exec_default=${valgrind:-"valgrind"}
2618         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"
2619     ;;
2620     valgrind-memcheck)
2621         target_exec_default=${valgrind:-"valgrind"}
2622         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2623     ;;
2624     msvc)
2625         cc_default="c99wrap cl"
2626         ld_default="c99wrap link"
2627         nm_default="dumpbin -symbols"
2628         ar_default="lib"
2629         target_os_default="win32"
2630     ;;
2631     icl)
2632         cc_default="c99wrap -noconv icl"
2633         ld_default="c99wrap xilink"
2634         nm_default="dumpbin -symbols"
2635         ar_default="xilib"
2636         target_os_default="win32"
2637     ;;
2638     gcov)
2639         add_cflags  -fprofile-arcs -ftest-coverage
2640         add_ldflags -fprofile-arcs -ftest-coverage
2641     ;;
2642     hardened)
2643         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2644         add_ldflags -Wl,-z,relro -Wl,-z,now
2645     ;;
2646     ?*)
2647         die "Unknown toolchain $toolchain"
2648     ;;
2649 esac
2650
2651 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2652 enabled cross_compile || host_cc_default=$cc
2653 set_default host_cc
2654
2655 if ! $pkg_config --version >/dev/null 2>&1; then
2656     warn "$pkg_config not found, library detection may fail."
2657     pkg_config=false
2658 fi
2659
2660 exesuf() {
2661     case $1 in
2662         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2663     esac
2664 }
2665
2666 EXESUF=$(exesuf $target_os)
2667 HOSTEXESUF=$(exesuf $host_os)
2668
2669 # set temporary file name
2670 : ${TMPDIR:=$TEMPDIR}
2671 : ${TMPDIR:=$TMP}
2672 : ${TMPDIR:=/tmp}
2673
2674 if [ -n "$tempprefix" ] ; then
2675     mktemp(){
2676         echo $tempprefix.${HOSTNAME}.${UID}
2677     }
2678 elif ! check_cmd mktemp -u XXXXXX; then
2679     # simple replacement for missing mktemp
2680     # NOT SAFE FOR GENERAL USE
2681     mktemp(){
2682         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2683     }
2684 fi
2685
2686 tmpfile(){
2687     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2688         (set -C; exec > $tmp) 2>/dev/null ||
2689         die "Unable to create temporary file in $TMPDIR."
2690     append TMPFILES $tmp
2691     eval $1=$tmp
2692 }
2693
2694 trap 'rm -f -- $TMPFILES' EXIT
2695
2696 tmpfile TMPASM .asm
2697 tmpfile TMPC   .c
2698 tmpfile TMPCPP .cpp
2699 tmpfile TMPE   $EXESUF
2700 tmpfile TMPH   .h
2701 tmpfile TMPO   .o
2702 tmpfile TMPS   .S
2703 tmpfile TMPSH  .sh
2704 tmpfile TMPV   .ver
2705
2706 unset -f mktemp
2707
2708 chmod +x $TMPE
2709
2710 # make sure we can execute files in $TMPDIR
2711 cat > $TMPSH 2>> $logfile <<EOF
2712 #! /bin/sh
2713 EOF
2714 chmod +x $TMPSH >> $logfile 2>&1
2715 if ! $TMPSH >> $logfile 2>&1; then
2716     cat <<EOF
2717 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2718 variable to another directory and make sure that it is not mounted noexec.
2719 EOF
2720     die "Sanity test failed."
2721 fi
2722
2723 ccc_flags(){
2724     for flag; do
2725         case $flag in
2726             -std=c99)           echo -c99                       ;;
2727             -mcpu=*)            echo -arch ${flag#*=}           ;;
2728             -mieee)             echo -ieee                      ;;
2729             -O*|-fast)          echo $flag                      ;;
2730             -fno-math-errno)    echo -assume nomath_errno       ;;
2731             -g)                 echo -g3                        ;;
2732             -Wall)              echo -msg_enable level2         ;;
2733             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2734             -Wl,*)              echo $flag                      ;;
2735             -f*|-W*)                                            ;;
2736             *)                  echo $flag                      ;;
2737         esac
2738    done
2739 }
2740
2741 cparser_flags(){
2742     for flag; do
2743         case $flag in
2744             -Wno-switch)             echo -Wno-switch-enum ;;
2745             -Wno-format-zero-length) ;;
2746             -Wdisabled-optimization) ;;
2747             -Wno-pointer-sign)       echo -Wno-other ;;
2748             *)                       echo $flag ;;
2749         esac
2750     done
2751 }
2752
2753 msvc_common_flags(){
2754     for flag; do
2755         case $flag in
2756             # In addition to specifying certain flags under the compiler
2757             # specific filters, they must be specified here as well or else the
2758             # generic catch all at the bottom will print the original flag.
2759             -Wall)                ;;
2760             -std=c99)             ;;
2761             # Common flags
2762             -fomit-frame-pointer) ;;
2763             -g)                   echo -Z7 ;;
2764             -fno-math-errno)      ;;
2765             -fno-common)          ;;
2766             -fno-signed-zeros)    ;;
2767             -fPIC)                ;;
2768             -mthumb)              ;;
2769             -march=*)             ;;
2770             -lz)                  echo zlib.lib ;;
2771             -lavifil32)           echo vfw32.lib ;;
2772             -lavicap32)           echo vfw32.lib user32.lib ;;
2773             -l*)                  echo ${flag#-l}.lib ;;
2774             *)                    echo $flag ;;
2775         esac
2776     done
2777 }
2778
2779 msvc_flags(){
2780     msvc_common_flags "$@"
2781     for flag; do
2782         case $flag in
2783             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2784                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2785                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2786                                        -wd4554 \
2787                                        -wd4273 ;;
2788         esac
2789     done
2790 }
2791
2792 icl_flags(){
2793     msvc_common_flags "$@"
2794     for flag; do
2795         case $flag in
2796             # Despite what Intel's documentation says -Wall, which is supported
2797             # on Windows, does enable remarks so disable them here.
2798             -Wall)                echo $flag -Qdiag-disable:remark ;;
2799             -std=c99)             echo -Qstd=c99 ;;
2800         esac
2801     done
2802 }
2803
2804 pgi_flags(){
2805     for flag; do
2806         case $flag in
2807             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2808             -fomit-frame-pointer) echo -Mnoframe ;;
2809             -g)                   echo -gopt ;;
2810             *)                    echo $flag ;;
2811         esac
2812     done
2813 }
2814
2815 suncc_flags(){
2816     for flag; do
2817         case $flag in
2818             -march=*|-mcpu=*)
2819                 case "${flag#*=}" in
2820                     native)                   echo -xtarget=native       ;;
2821                     v9|niagara)               echo -xarch=sparc          ;;
2822                     ultrasparc)               echo -xarch=sparcvis       ;;
2823                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2824                     i586|pentium)             echo -xchip=pentium        ;;
2825                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2826                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2827                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2828                     pentium4*)          echo -xtarget=pentium4           ;;
2829                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2830                     *-sse3)             echo -xarch=sse3                 ;;
2831                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2832                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2833                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2834                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2835                     bdver*)                    echo -xarch=avx           ;;
2836                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2837                     k8|opteron|athlon64|athlon-fx)
2838                                                echo -xarch=sse2a         ;;
2839                     athlon*)                   echo -xarch=pentium_proa  ;;
2840                 esac
2841                 ;;
2842             -std=c99)             echo -xc99              ;;
2843             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2844             -fPIC)                echo -KPIC -xcode=pic32 ;;
2845             -W*,*)                echo $flag              ;;
2846             -f*-*|-W*|-mimpure-text)                      ;;
2847             -shared)              echo -G                 ;;
2848             *)                    echo $flag              ;;
2849         esac
2850     done
2851 }
2852
2853 tms470_flags(){
2854     for flag; do
2855         case $flag in
2856             -march=*|-mcpu=*)
2857                 case "${flag#*=}" in
2858                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2859                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2860                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2861                     armv6*|arm11*)          echo -mv=6   ;;
2862                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2863                                             echo -mv=5e  ;;
2864                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2865                 esac
2866                 ;;
2867             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2868             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2869             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2870             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2871             -msoft-float)   echo --float_support=vfplib       ;;
2872             -O[0-3]|-mf=*)  echo $flag                        ;;
2873             -g)             echo -g -mn                       ;;
2874             -pds=*)         echo $flag                        ;;
2875             -D*|-I*)        echo $flag                        ;;
2876             --gcc|--abi=*)  echo $flag                        ;;
2877             -me)            echo $flag                        ;;
2878         esac
2879     done
2880 }
2881
2882 probe_cc(){
2883     pfx=$1
2884     _cc=$2
2885
2886     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2887     unset _ld_o _ldflags _ld_lib _ld_path
2888     unset _depflags _DEPCMD _DEPFLAGS
2889     _flags_filter=echo
2890
2891     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2892         _type=llvm_gcc
2893         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2894         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2895         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2896         _cflags_speed='-O3'
2897         _cflags_size='-Os'
2898     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2899         _type=gcc
2900         gcc_version=$($_cc --version | head -n1)
2901         gcc_basever=$($_cc -dumpversion)
2902         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2903         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2904         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2905         if ! $_cc -dumpversion | grep -q '^2\.'; then
2906             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2907         fi
2908         _cflags_speed='-O3'
2909         _cflags_size='-Os'
2910     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2911         _type=icc
2912         _ident=$($_cc --version | head -n1)
2913         _depflags='-MMD'
2914         _cflags_speed='-O3'
2915         _cflags_size='-Os'
2916         _cflags_noopt='-O1'
2917     elif $_cc -v 2>&1 | grep -q xlc; then
2918         _type=xlc
2919         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2920         _cflags_speed='-O5'
2921         _cflags_size='-O5 -qcompact'
2922     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2923         _type=ccc
2924         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2925         _DEPFLAGS='-M'
2926         _cflags_speed='-fast'
2927         _cflags_size='-O1'
2928         _flags_filter=ccc_flags
2929     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2930         test -d "$sysroot" || die "No valid sysroot specified."
2931         _type=armcc
2932         _ident=$($_cc --vsn | head -n1)
2933         armcc_conf="$PWD/armcc.conf"
2934         $_cc --arm_linux_configure                 \
2935              --arm_linux_config_file="$armcc_conf" \
2936              --configure_sysroot="$sysroot"        \
2937              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2938              die "Error creating armcc configuration file."
2939         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2940         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2941         as_default="${cross_prefix}gcc"
2942         _depflags='-MMD'
2943         _cflags_speed='-O3'
2944         _cflags_size='-Os'
2945     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2946         _type=tms470
2947         _ident=$($_cc -version | head -n1 | tr -s ' ')
2948         _flags='--gcc --abi=eabi -me'
2949         _cc_e='-ppl -fe=$@'
2950         _cc_o='-fe=$@'
2951         _depflags='-ppa -ppd=$(@:.o=.d)'
2952         _cflags_speed='-O3 -mf=5'
2953         _cflags_size='-O3 -mf=2'
2954         _flags_filter=tms470_flags
2955     elif $_cc -v 2>&1 | grep -q clang; then
2956         _type=clang
2957         _ident=$($_cc --version | head -n1)
2958         _depflags='-MMD'
2959         _cflags_speed='-O3'
2960         _cflags_size='-Os'
2961     elif $_cc -V 2>&1 | grep -q Sun; then
2962         _type=suncc
2963         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2964         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2965         _DEPFLAGS='-xM1 -xc99'
2966         _ldflags='-std=c99'
2967         _cflags_speed='-O5'
2968         _cflags_size='-O5 -xspace'
2969         _flags_filter=suncc_flags
2970     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2971         _type=pathscale
2972         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2973         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2974         _cflags_speed='-O2'
2975         _cflags_size='-Os'
2976         _flags_filter='filter_out -Wdisabled-optimization'
2977     elif $_cc -v 2>&1 | grep -q Open64; then
2978         _type=open64
2979         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2980         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2981         _cflags_speed='-O2'
2982         _cflags_size='-Os'
2983         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2984     elif $_cc -V 2>&1 | grep -q Portland; then
2985         _type=pgi
2986         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2987         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2988         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2989         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2990         _cflags_noopt="-O"
2991         _flags_filter=pgi_flags
2992     elif $_cc 2>&1 | grep -q Microsoft; then
2993         _type=msvc
2994         _ident=$($cc 2>&1 | head -n1)
2995         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2996         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2997         _cflags_speed="-O2"
2998         _cflags_size="-O1"
2999         # Nonstandard output options, to avoid msys path conversion issues.
3000         # Relies on wrapper to remap it.
3001         if $_cc 2>&1 | grep -q Linker; then
3002             _ld_o='-out $@'
3003         else
3004             _ld_o='-Fe$@'
3005         fi
3006         _cc_o='-Fo $@'
3007         _cc_e='-P -Fi $@'
3008         _flags_filter=msvc_flags
3009         _ld_lib='lib%.a'
3010         _ld_path='-libpath:'
3011         _flags='-nologo'
3012         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3013         if [ $pfx = hostcc ]; then
3014             append _cflags -Dsnprintf=_snprintf
3015         fi
3016         disable stripping
3017     elif $_cc 2>&1 | grep -q Intel; then
3018         _type=icl
3019         _ident=$($cc 2>&1 | head -n1)
3020         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3021         # Not only is O3 broken on 13.x+ but it is slower on all previous
3022         # versions (tested) as well.
3023         _cflags_speed="-O2"
3024         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3025         # Nonstandard output options, to avoid msys path conversion issues.
3026         # Relies on wrapper to remap it.
3027         if $_cc 2>&1 | grep -q Linker; then
3028             _ld_o='-out $@'
3029         else
3030             _ld_o='-Fe$@'
3031         fi
3032         _cc_o='-Fo $@'
3033         _cc_e='-P'
3034         _flags_filter=icl_flags
3035         _ld_lib='lib%.a'
3036         _ld_path='-libpath:'
3037         # -Qdiag-error to make icl error when seeing certain unknown arguments
3038         _flags='-nologo -Qdiag-error:4044,10157'
3039         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3040         # with MSVC which enables it by default.
3041         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3042         if [ $pfx = hostcc ]; then
3043             append _cflags -Dsnprintf=_snprintf
3044         fi
3045     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3046         _type=cparser
3047         _ident=$($_cc --version | head -n1)
3048         _depflags='-MMD'
3049         _cflags_speed='-O4'
3050         _cflags_size='-O2'
3051         _flags_filter=cparser_flags
3052     fi
3053
3054     eval ${pfx}_type=\$_type
3055     eval ${pfx}_ident=\$_ident
3056 }
3057
3058 set_ccvars(){
3059     eval ${1}_C=\${_cc_c-\${${1}_C}}
3060     eval ${1}_E=\${_cc_e-\${${1}_E}}
3061     eval ${1}_O=\${_cc_o-\${${1}_O}}
3062
3063     if [ -n "$_depflags" ]; then
3064         eval ${1}_DEPFLAGS=\$_depflags
3065     else
3066         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3067         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3068         eval DEP${1}FLAGS=\$_flags
3069     fi
3070 }
3071
3072 probe_cc cc "$cc"
3073 cflags_filter=$_flags_filter
3074 cflags_speed=$_cflags_speed
3075 cflags_size=$_cflags_size
3076 cflags_noopt=$_cflags_noopt
3077 add_cflags $_flags $_cflags
3078 cc_ldflags=$_ldflags
3079 set_ccvars CC
3080
3081 probe_cc hostcc "$host_cc"
3082 host_cflags_filter=$_flags_filter
3083 add_host_cflags  $_flags $_cflags
3084 set_ccvars HOSTCC
3085
3086 test -n "$cc_type" && enable $cc_type ||
3087     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3088
3089 : ${as_default:=$cc}
3090 : ${dep_cc_default:=$cc}
3091 : ${ld_default:=$cc}
3092 : ${host_ld_default:=$host_cc}
3093 set_default ar as dep_cc ld host_ld
3094
3095 probe_cc as "$as"
3096 asflags_filter=$_flags_filter
3097 add_asflags $_flags $_cflags
3098 set_ccvars AS
3099
3100 probe_cc ld "$ld"
3101 ldflags_filter=$_flags_filter
3102 add_ldflags $_flags $_ldflags
3103 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3104 LD_O=${_ld_o-$LD_O}
3105 LD_LIB=${_ld_lib-$LD_LIB}
3106 LD_PATH=${_ld_path-$LD_PATH}
3107
3108 probe_cc hostld "$host_ld"
3109 host_ldflags_filter=$_flags_filter
3110 add_host_ldflags $_flags $_ldflags
3111 HOSTLD_O=${_ld_o-$HOSTLD_O}
3112
3113 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3114     probe_cc depcc "$dep_cc"
3115     CCDEP=${_DEPCMD:-$DEPCMD}
3116     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3117     DEPCCFLAGS=$_flags
3118 fi
3119
3120 if $ar 2>&1 | grep -q Microsoft; then
3121     arflags="-nologo"
3122     ar_o='-out:$@'
3123 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3124     arflags="rq"
3125     ar_o='$@'
3126 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3127     arflags='-Xany -r -c'
3128     ar_o='$@'
3129 else
3130     arflags="rc"
3131     ar_o='$@'
3132 fi
3133
3134 add_cflags $extra_cflags
3135 add_cxxflags $extra_cxxflags
3136 add_asflags $extra_cflags
3137
3138 if test -n "$sysroot"; then
3139     case "$cc_type" in
3140         gcc|llvm_gcc|clang)
3141             add_cppflags --sysroot="$sysroot"
3142             add_ldflags --sysroot="$sysroot"
3143         ;;
3144         tms470)
3145             add_cppflags -I"$sysinclude"
3146             add_ldflags  --sysroot="$sysroot"
3147         ;;
3148     esac
3149 fi
3150
3151 if test "$cpu" = host; then
3152     enabled cross_compile &&
3153         die "--cpu=host makes no sense when cross-compiling."
3154
3155     case "$cc_type" in
3156         gcc|llvm_gcc)
3157             check_native(){
3158                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3159                 sed -n "/cc1.*$1=/{
3160                             s/.*$1=\\([^ ]*\\).*/\\1/
3161                             p
3162                             q
3163                         }" $TMPE
3164             }
3165             cpu=$(check_native -march || check_native -mcpu)
3166         ;;
3167     esac
3168
3169     test "${cpu:-host}" = host &&
3170         die "--cpu=host not supported with compiler $cc"
3171 fi
3172
3173 # Deal with common $arch aliases
3174 case "$arch" in
3175     aarch64|arm64)
3176         arch="aarch64"
3177     ;;
3178     arm*|iPad*|iPhone*)
3179         arch="arm"
3180     ;;
3181     mips*|IP*)
3182         arch="mips"
3183     ;;
3184     parisc*|hppa*)
3185         arch="parisc"
3186     ;;
3187     "Power Macintosh"|ppc*|powerpc*)
3188         arch="ppc"
3189     ;;
3190     s390|s390x)
3191         arch="s390"
3192     ;;
3193     sh4|sh)
3194         arch="sh4"
3195     ;;
3196     sun4u|sparc*)
3197         arch="sparc"
3198     ;;
3199     tilegx|tile-gx)
3200         arch="tilegx"
3201     ;;
3202     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3203         arch="x86"
3204     ;;
3205 esac
3206
3207 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3208 enable $arch
3209
3210 # Add processor-specific flags
3211 if enabled aarch64; then
3212
3213     case $cpu in
3214         armv*)
3215             cpuflags="-march=$cpu"
3216         ;;
3217         *)
3218             cpuflags="-mcpu=$cpu"
3219         ;;
3220     esac
3221
3222 elif enabled alpha; then
3223
3224     cpuflags="-mcpu=$cpu"
3225
3226 elif enabled arm; then
3227
3228     check_arm_arch() {
3229         check_cpp_condition stddef.h \
3230             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3231             $cpuflags
3232     }
3233
3234     probe_arm_arch() {
3235         if   check_arm_arch 4;        then echo armv4;
3236         elif check_arm_arch 4T;       then echo armv4t;
3237         elif check_arm_arch 5;        then echo armv5;
3238         elif check_arm_arch 5E;       then echo armv5e;
3239         elif check_arm_arch 5T;       then echo armv5t;
3240         elif check_arm_arch 5TE;      then echo armv5te;
3241         elif check_arm_arch 5TEJ;     then echo armv5te;
3242         elif check_arm_arch 6;        then echo armv6;
3243         elif check_arm_arch 6J;       then echo armv6j;
3244         elif check_arm_arch 6K;       then echo armv6k;
3245         elif check_arm_arch 6Z;       then echo armv6z;
3246         elif check_arm_arch 6ZK;      then echo armv6zk;
3247         elif check_arm_arch 6T2;      then echo armv6t2;
3248         elif check_arm_arch 7;        then echo armv7;
3249         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3250         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3251         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3252         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3253         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3254         fi
3255     }
3256
3257     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3258
3259     case $cpu in
3260         armv*)
3261             cpuflags="-march=$cpu"
3262             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3263         ;;
3264         *)
3265             cpuflags="-mcpu=$cpu"
3266             case $cpu in
3267                 cortex-a*)                               subarch=armv7a  ;;
3268                 cortex-r*)                               subarch=armv7r  ;;
3269                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3270                 arm11*)                                  subarch=armv6   ;;
3271                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3272                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3273                 *)                             subarch=$(probe_arm_arch) ;;
3274             esac
3275         ;;
3276     esac
3277
3278     case "$subarch" in
3279         armv5t*)    enable fast_clz                ;;
3280         armv[6-8]*) enable fast_clz fast_unaligned ;;
3281     esac
3282
3283 elif enabled avr32; then
3284
3285     case $cpu in
3286         ap7[02]0[0-2])
3287             subarch="avr32_ap"
3288             cpuflags="-mpart=$cpu"
3289         ;;
3290         ap)
3291             subarch="avr32_ap"
3292             cpuflags="-march=$cpu"
3293         ;;
3294         uc3[ab]*)
3295             subarch="avr32_uc"
3296             cpuflags="-mcpu=$cpu"
3297         ;;
3298         uc)
3299             subarch="avr32_uc"
3300             cpuflags="-march=$cpu"
3301         ;;
3302     esac
3303
3304 elif enabled bfin; then
3305
3306     cpuflags="-mcpu=$cpu"
3307
3308 elif enabled mips; then
3309
3310     cpuflags="-march=$cpu"
3311
3312     case $cpu in
3313         24kc)
3314             disable mipsfpu
3315             disable mipsdspr1
3316             disable mipsdspr2
3317         ;;
3318         24kf*)
3319             disable mipsdspr1
3320             disable mipsdspr2
3321         ;;
3322         24kec|34kc|1004kc)
3323             disable mipsfpu
3324             disable mipsdspr2
3325         ;;
3326         24kef*|34kf*|1004kf*)
3327             disable mipsdspr2
3328         ;;
3329         74kc)
3330             disable mipsfpu
3331         ;;
3332     esac
3333
3334 elif enabled ppc; then
3335
3336     case $(tolower $cpu) in
3337         601|ppc601|powerpc601)
3338             cpuflags="-mcpu=601"
3339             disable altivec
3340         ;;
3341         603*|ppc603*|powerpc603*)
3342             cpuflags="-mcpu=603"
3343             disable altivec
3344         ;;
3345         604*|ppc604*|powerpc604*)
3346             cpuflags="-mcpu=604"
3347             disable altivec
3348         ;;
3349         g3|75*|ppc75*|powerpc75*)
3350             cpuflags="-mcpu=750"
3351             disable altivec
3352         ;;
3353         g4|745*|ppc745*|powerpc745*)
3354             cpuflags="-mcpu=7450"
3355         ;;
3356         74*|ppc74*|powerpc74*)
3357             cpuflags="-mcpu=7400"
3358         ;;
3359         g5|970|ppc970|powerpc970)
3360             cpuflags="-mcpu=970"
3361         ;;
3362         power[3-7]*)
3363             cpuflags="-mcpu=$cpu"
3364         ;;
3365         cell)
3366             cpuflags="-mcpu=cell"
3367             enable ldbrx
3368         ;;
3369         e500mc)
3370             cpuflags="-mcpu=e500mc"
3371             disable altivec
3372         ;;
3373         e500v2)
3374             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3375             disable altivec
3376         ;;
3377         e500)
3378             cpuflags="-mcpu=8540 -mhard-float"
3379             disable altivec
3380         ;;
3381     esac
3382
3383 elif enabled sparc; then
3384
3385     case $cpu in
3386         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3387             cpuflags="-mcpu=$cpu"
3388             disable vis
3389         ;;
3390         ultrasparc*|niagara[234])
3391             cpuflags="-mcpu=$cpu"
3392         ;;
3393     esac
3394
3395 elif enabled x86; then
3396
3397     case $cpu in
3398         i[345]86|pentium)
3399             cpuflags="-march=$cpu"
3400             disable mmx
3401         ;;
3402         # targets that do NOT support nopl and conditional mov (cmov)
3403         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3404             cpuflags="-march=$cpu"
3405             disable i686
3406         ;;
3407         # targets that do support nopl and conditional mov (cmov)
3408         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3409             cpuflags="-march=$cpu"
3410             enable i686
3411             enable fast_cmov
3412         ;;
3413         # targets that do support conditional mov but on which it's slow
3414         pentium4|pentium4m|prescott|nocona)
3415             cpuflags="-march=$cpu"
3416             enable i686
3417             disable fast_cmov
3418         ;;
3419     esac
3420
3421 fi
3422
3423 if [ "$cpu" != generic ]; then
3424     add_cflags  $cpuflags
3425     add_asflags $cpuflags
3426 fi
3427
3428 # compiler sanity check
3429 check_exec <<EOF
3430 int main(void){ return 0; }
3431 EOF
3432 if test "$?" != 0; then
3433     echo "$cc is unable to create an executable file."
3434     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3435         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3436         echo "Only do this if you know what cross compiling means."
3437     fi
3438     die "C compiler test failed."
3439 fi
3440
3441 add_cppflags -D_ISOC99_SOURCE
3442 add_cxxflags -D__STDC_CONSTANT_MACROS
3443 check_cflags -std=c99
3444 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3445 #include <stdlib.h>
3446 EOF
3447 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3448 #include <stdlib.h>
3449 EOF
3450
3451 check_host_cflags -std=c99
3452 check_host_cflags -Wall
3453
3454 check_64bit(){
3455     arch32=$1
3456     arch64=$2
3457     expr=$3
3458     check_code cc "" "int test[2*($expr) - 1]" &&
3459         subarch=$arch64 || subarch=$arch32
3460 }
3461
3462 case "$arch" in
3463     aarch64|alpha|ia64)
3464         spic=$shared
3465     ;;
3466     mips)
3467         check_64bit mips mips64 '_MIPS_SIM > 1'
3468         spic=$shared
3469     ;;
3470     parisc)
3471         check_64bit parisc parisc64 'sizeof(void *) > 4'
3472         spic=$shared
3473     ;;
3474     ppc)
3475         check_64bit ppc ppc64 'sizeof(void *) > 4'
3476         spic=$shared
3477     ;;
3478     sparc)
3479         check_64bit sparc sparc64 'sizeof(void *) > 4'
3480         spic=$shared
3481     ;;
3482     x86)
3483         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3484         if test "$subarch" = "x86_64"; then
3485             spic=$shared
3486         fi
3487     ;;
3488     ppc)
3489         check_cc <<EOF && subarch="ppc64"
3490         int test[(int)sizeof(char*) - 7];
3491 EOF
3492     ;;
3493 esac
3494
3495 enable $subarch
3496 enabled spic && enable_weak pic
3497
3498 # OS specific
3499 case $target_os in
3500     aix)
3501         SHFLAGS=-shared
3502         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3503         enabled shared && add_ldflags -Wl,-brtl
3504         ;;
3505     haiku)
3506         prefix_default="/boot/common"
3507         network_extralibs="-lnetwork"
3508         host_libs=
3509         ;;
3510     sunos)
3511         SHFLAGS='-shared -Wl,-h,$$(@F)'
3512         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3513         network_extralibs="-lsocket -lnsl"
3514         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3515         # When using suncc to build, the Solaris linker will mark
3516         # an executable with each instruction set encountered by
3517         # the Solaris assembler.  As our libraries contain their own
3518         # guards for processor-specific code, instead suppress
3519         # generation of the HWCAPS ELF section on Solaris x86 only.
3520         enabled_all suncc x86 &&
3521             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3522             add_ldflags -Wl,-M,mapfile
3523         nm_default='nm -P -g'
3524         ;;
3525     netbsd)
3526         disable symver
3527         oss_indev_extralibs="-lossaudio"
3528         oss_outdev_extralibs="-lossaudio"
3529         enabled gcc || check_ldflags -Wl,-zmuldefs
3530         ;;
3531     openbsd|bitrig)
3532         disable symver
3533         SHFLAGS='-shared'
3534         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3535         SLIB_INSTALL_LINKS=
3536         oss_indev_extralibs="-lossaudio"
3537         oss_outdev_extralibs="-lossaudio"
3538         ;;
3539     dragonfly)
3540         disable symver
3541         ;;
3542     freebsd)
3543         ;;
3544     bsd/os)
3545         add_extralibs -lpoll -lgnugetopt
3546         strip="strip -d"
3547         ;;
3548     darwin)
3549         gas="gas-preprocessor.pl $cc"
3550         enabled ppc && add_asflags -force_cpusubtype_ALL
3551         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3552         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3553         strip="${strip} -x"
3554         add_ldflags -Wl,-dynamic,-search_paths_first
3555         SLIBSUF=".dylib"
3556         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3557         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3558         objformat="macho"
3559         enabled x86_64 && objformat="macho64"
3560         enabled_any pic shared ||
3561             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3562         ;;
3563     mingw32*)
3564         if test $target_os = "mingw32ce"; then
3565             disable network
3566         else
3567             target_os=mingw32
3568         fi
3569         LIBTARGET=i386
3570         if enabled x86_64; then
3571             LIBTARGET="i386:x86-64"
3572         elif enabled arm; then
3573             LIBTARGET=arm-wince
3574         fi
3575         check_ldflags -Wl,--nxcompat
3576         check_ldflags -Wl,--dynamicbase
3577         shlibdir_default="$bindir_default"
3578         SLIBPREF=""
3579         SLIBSUF=".dll"
3580         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3581         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3582         dlltool="${cross_prefix}dlltool"
3583         if check_cmd lib.exe -list; then
3584             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3585             if enabled x86_64; then
3586                 LIBTARGET=x64
3587             fi
3588         elif check_cmd $dlltool --version; then
3589             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3590         fi
3591         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3592         SLIB_INSTALL_LINKS=
3593         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3594         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3595         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3596         objformat="win32"
3597         ranlib=:
3598         enable dos_paths
3599         ;;
3600     win32|win64)
3601         if enabled shared; then
3602             # Link to the import library instead of the normal static library
3603             # for shared libs.
3604             LD_LIB='%.lib'
3605             # Cannot build both shared and static libs with MSVC or icl.
3606             disable static
3607         fi
3608         shlibdir_default="$bindir_default"
3609         SLIBPREF=""
3610         SLIBSUF=".dll"
3611         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3612         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3613         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3614         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3615         SLIB_INSTALL_LINKS=
3616         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3617         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3618         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3619         objformat="win32"
3620         ranlib=:
3621         enable dos_paths
3622         ;;
3623     cygwin*)
3624         target_os=cygwin
3625         shlibdir_default="$bindir_default"
3626         SLIBPREF="cyg"
3627         SLIBSUF=".dll"
3628         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3629         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3630         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3631         SLIB_INSTALL_LINKS=
3632         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3633         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3634         objformat="win32"
3635         enable dos_paths
3636         ;;
3637     *-dos|freedos|opendos)
3638         network_extralibs="-lsocket"
3639         objformat="coff"
3640         enable dos_paths
3641         add_cppflags -U__STRICT_ANSI__
3642         ;;
3643     linux)
3644         enable dv1394
3645         ;;
3646     irix*)
3647         target_os=irix
3648         ranlib="echo ignoring ranlib"
3649         ;;
3650     os/2*)
3651         strip="lxlite -CS"
3652         ln_s="cp -f"
3653         objformat="aout"
3654         add_cppflags -D_GNU_SOURCE
3655         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3656         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3657         LIBSUF="_s.a"
3658         SLIBPREF=""
3659         SLIBSUF=".dll"
3660         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3661         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3662         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3663             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3664             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3665             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3666             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3667             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3668         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3669             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3670         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3671         enable dos_paths
3672         enable_weak os2threads
3673         ;;
3674     gnu/kfreebsd)
3675         add_cppflags -D_BSD_SOURCE
3676         ;;
3677     gnu)
3678         ;;
3679     qnx)
3680         add_cppflags -D_QNX_SOURCE
3681         network_extralibs="-lsocket"
3682         ;;
3683     symbian)
3684         SLIBSUF=".dll"
3685         enable dos_paths
3686         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3687         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3688         add_ldflags -Wl,--target1-abs,--no-undefined \
3689                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3690                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3691         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3692                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3693                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3694         ;;
3695     osf1)
3696         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3697         ;;
3698     minix)
3699         ;;
3700     plan9)
3701         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3702                      -D_REENTRANT_SOURCE        \
3703                      -D_RESEARCH_SOURCE         \
3704                      -DFD_SETSIZE=96            \
3705                      -DHAVE_SOCK_OPTS
3706         add_compat strtod.o strtod=avpriv_strtod
3707         network_extralibs='-lbsd'
3708         exeobjs=compat/plan9/main.o
3709         disable ffserver
3710         cp_f='cp'
3711         ;;
3712     none)
3713         ;;
3714     *)
3715         die "Unknown OS '$target_os'."
3716         ;;
3717 esac
3718
3719 # determine libc flavour
3720
3721 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3722 if check_cpp_condition features.h "defined __UCLIBC__"; then
3723     libc_type=uclibc
3724     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3725 elif check_cpp_condition features.h "defined __GLIBC__"; then
3726     libc_type=glibc
3727     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3728 # MinGW headers can be installed on Cygwin, so check for newlib first.
3729 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3730     libc_type=newlib
3731     add_cppflags -U__STRICT_ANSI__
3732 elif check_header _mingw.h; then
3733     libc_type=mingw
3734     check_cpp_condition _mingw.h \
3735         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3736             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3737         die "ERROR: MinGW runtime version must be >= 3.15."
3738     add_cppflags -U__STRICT_ANSI__
3739     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3740             __MINGW64_VERSION_MAJOR < 3"; then
3741         add_compat msvcrt/snprintf.o
3742         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3743     else
3744         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3745     fi
3746 elif check_func_headers stdlib.h _get_doserrno; then
3747     libc_type=msvcrt
3748     add_compat strtod.o strtod=avpriv_strtod
3749     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3750                                  _snprintf=avpriv_snprintf  \
3751                                  vsnprintf=avpriv_vsnprintf
3752     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3753     # 0x601 by default unless something else is set by the user.
3754     # This can easily lead to us detecting functions only present
3755     # in such new versions and producing binaries requiring windows 7.0.
3756     # Therefore explicitly set the default to XP unless the user has
3757     # set something else on the command line.
3758     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3759 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3760     libc_type=klibc
3761 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3762     libc_type=bionic
3763     add_compat strtod.o strtod=avpriv_strtod
3764 fi
3765
3766 test -n "$libc_type" && enable $libc_type
3767
3768 # hacks for compiler/libc/os combinations
3769
3770 if enabled_all tms470 glibc; then
3771     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3772     add_cppflags -D__USER_LABEL_PREFIX__=
3773     add_cppflags -D__builtin_memset=memset
3774     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3775     add_cflags   -pds=48    # incompatible redefinition of macro
3776 fi
3777
3778 if enabled_all ccc glibc; then
3779     add_ldflags -Wl,-z,now  # calls to libots crash without this
3780 fi
3781
3782 esc(){
3783     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3784 }
3785
3786 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3787
3788 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3789
3790 set_default $PATHS_LIST
3791 set_default nm
3792
3793 # we need to build at least one lib type
3794 if ! enabled_any static shared; then
3795     cat <<EOF
3796 At least one library type must be built.
3797 Specify --enable-static to build the static libraries or --enable-shared to
3798 build the shared libraries as well. To only build the shared libraries specify
3799 --disable-static in addition to --enable-shared.
3800 EOF
3801     exit 1;
3802 fi
3803
3804 # backward compatibility layer for incompatible_libav/fork_abi
3805 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3806 enabled incompatible_libav_abi && enable incompatible_fork_abi
3807
3808 die_license_disabled() {
3809     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3810 }
3811
3812 die_license_disabled_gpl() {
3813     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3814 }
3815
3816 die_license_disabled gpl frei0r
3817 die_license_disabled gpl libcdio
3818 die_license_disabled gpl libutvideo
3819 die_license_disabled gpl libvidstab
3820 die_license_disabled gpl libx264
3821 die_license_disabled gpl libxavs
3822 die_license_disabled gpl libxvid
3823 die_license_disabled gpl libzvbi
3824 die_license_disabled gpl x11grab
3825
3826 die_license_disabled nonfree libaacplus
3827 die_license_disabled nonfree libfaac
3828 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3829 enabled gpl && die_license_disabled_gpl nonfree openssl
3830
3831 die_license_disabled version3 libopencore_amrnb
3832 die_license_disabled version3 libopencore_amrwb
3833 die_license_disabled version3 libvo_aacenc
3834 die_license_disabled version3 libvo_amrwbenc
3835
3836 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3837
3838 disabled optimizations || check_cflags -fomit-frame-pointer
3839
3840 enable_weak_pic() {
3841     disabled pic && return
3842     enable pic
3843     add_cppflags -DPIC
3844     case "$target_os" in
3845     mingw*|cygwin*)
3846         ;;
3847     *)
3848         add_cflags -fPIC
3849         ;;
3850     esac
3851     add_asflags  -fPIC
3852 }
3853
3854 enabled pic && enable_weak_pic
3855
3856 check_cc <<EOF || die "Symbol mangling check failed."
3857 int ff_extern;
3858 EOF
3859 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3860 extern_prefix=${sym%%ff_extern*}
3861
3862 check_cc <<EOF && enable_weak inline_asm
3863 void foo(void) { __asm__ volatile ("" ::); }
3864 EOF
3865
3866 _restrict=
3867 for restrict_keyword in restrict __restrict__ __restrict; do
3868     check_cc <<EOF && _restrict=$restrict_keyword && break
3869 void foo(char * $restrict_keyword p);
3870 EOF
3871 done
3872
3873 check_cc <<EOF && enable pragma_deprecated
3874 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3875 EOF
3876
3877 check_cc <<EOF && enable attribute_packed
3878 struct { int x; } __attribute__((packed)) x;
3879 EOF
3880
3881 check_cc <<EOF && enable attribute_may_alias
3882 union { int x; } __attribute__((may_alias)) x;
3883 EOF
3884
3885 check_cc <<EOF || die "endian test failed"
3886 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3887 EOF
3888 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3889
3890 check_inline_asm inline_asm_labels '"1:\n"'
3891
3892 if enabled alpha; then
3893
3894     check_cflags -mieee
3895
3896 elif enabled arm; then
3897
3898     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3899 float func(float a, float b){ return a+b; }
3900 EOF
3901
3902     enabled thumb && check_cflags -mthumb || check_cflags -marm
3903     nogas=die
3904
3905     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3906         enable vfp_args
3907     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3908         case "${cross_prefix:-$cc}" in
3909             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3910             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3911 __asm__ (".eabi_attribute 28, 1");
3912 int main(void) { return 0; }
3913 EOF
3914         esac
3915         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3916     fi
3917
3918     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3919     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3920     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3921     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3922     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3923     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3924
3925     [ $target_os = linux ] ||
3926         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3927             $ARCH_EXT_LIST_ARM
3928
3929     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3930     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3931
3932     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3933
3934 elif enabled mips; then
3935
3936     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3937     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3938      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3939     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3940      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3941     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3942      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3943     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3944      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3945
3946 elif enabled parisc; then
3947
3948     if enabled gcc; then
3949         case $($cc -dumpversion) in
3950             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3951         esac
3952     fi
3953
3954 elif enabled ppc; then
3955
3956     enable local_aligned_8 local_aligned_16
3957
3958     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3959     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3960     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3961     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3962
3963     # AltiVec flags: The FSF version of GCC differs from the Apple version
3964     if enabled altivec; then
3965         if ! enabled_any pic ppc64; then
3966             nogas=warn
3967         fi
3968         check_cflags -maltivec -mabi=altivec &&
3969         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3970         check_cflags -faltivec
3971
3972         # check if our compiler supports Motorola AltiVec C API
3973         check_cc <<EOF || disable altivec
3974 $inc_altivec_h
3975 int main(void) {
3976     vector signed int v1 = (vector signed int) { 0 };
3977     vector signed int v2 = (vector signed int) { 1 };
3978     v1 = vec_add(v1, v2);
3979     return 0;
3980 }
3981 EOF
3982
3983         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3984     fi
3985
3986 elif enabled sparc; then
3987
3988     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3989
3990 elif enabled x86; then
3991
3992     check_builtin rdtsc    intrin.h   "__rdtsc()"
3993     check_builtin mm_empty mmintrin.h "_mm_empty()"
3994
3995     enable local_aligned_8 local_aligned_16
3996
3997     # check whether EBP is available on x86
3998     # As 'i' is stored on the stack, this program will crash
3999     # if the base pointer is used to access it because the
4000     # base pointer is cleared in the inline assembly code.
4001     check_exec_crash <<EOF && enable ebp_available
4002 volatile int i=0;
4003 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4004 return i;
4005 EOF
4006
4007     # check whether EBX is available on x86
4008     check_inline_asm ebx_available '""::"b"(0)' &&
4009         check_inline_asm ebx_available '"":::"%ebx"'
4010
4011     # check whether xmm clobbers are supported
4012     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4013
4014     # check whether binutils is new enough to compile SSSE3/MMXEXT
4015     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4016     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4017
4018     if ! disabled_any asm mmx yasm; then
4019         if check_cmd $yasmexe --version; then
4020             enabled x86_64 && yasm_extra="-m amd64"
4021             yasm_debug="-g dwarf2"
4022         elif check_cmd nasm -v; then
4023             yasmexe=nasm
4024             yasm_debug="-g -F dwarf"
4025             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4026         fi
4027
4028         YASMFLAGS="-f $objformat $yasm_extra"
4029         enabled pic               && append YASMFLAGS "-DPIC"
4030         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4031         case "$objformat" in
4032             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4033         esac
4034
4035         check_yasm "movbe ecx, [5]" && enable yasm ||
4036             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4037         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4038         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4039         check_yasm "CPU amdnop" && enable cpunop
4040     fi
4041
4042     case "$cpu" in