Merge commit '2d589273dd36c5eb271a035ea0e669b64dae257f'
[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   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig
198   --enable-frei0r          enable frei0r video filtering
199   --enable-gnutls          enable gnutls [no]
200   --disable-iconv          disable iconv [autodetect]
201   --enable-ladspa          enable LADSPA audio filtering
202   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
203   --enable-libass          enable libass subtitles rendering [no]
204   --enable-libbluray       enable BluRay reading using libbluray [no]
205   --enable-libbs2b         enable bs2b DSP library [no]
206   --enable-libcaca         enable textual display using libcaca
207   --enable-libcelt         enable CELT decoding via libcelt [no]
208   --enable-libcdio         enable audio CD grabbing with libcdio
209   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
210                            and libraw1394 [no]
211   --enable-libfaac         enable AAC encoding via libfaac [no]
212   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
213   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
214   --enable-libfreetype     enable libfreetype [no]
215   --enable-libfribidi      enable libfribidi [no]
216   --enable-libgme          enable Game Music Emu via libgme [no]
217   --enable-libgsm          enable GSM de/encoding via libgsm [no]
218   --enable-libiec61883     enable iec61883 via libiec61883 [no]
219   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
220   --enable-libmodplug      enable ModPlug via libmodplug [no]
221   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
222   --enable-libnut          enable NUT (de)muxing via libnut,
223                            native (de)muxer exists [no]
224   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
225   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
226   --enable-libopencv       enable video filtering via libopencv [no]
227   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
228   --enable-libopus         enable Opus de/encoding via libopus [no]
229   --enable-libpulse        enable Pulseaudio input via libpulse [no]
230   --enable-libquvi         enable quvi input via libquvi [no]
231   --enable-librtmp         enable RTMP[E] support via librtmp [no]
232   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
233   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
234   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
235   --enable-libsoxr         enable Include libsoxr resampling [no]
236   --enable-libspeex        enable Speex de/encoding via libspeex [no]
237   --enable-libssh          enable SFTP protocol via libssh [no]
238   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
239   --enable-libtheora       enable Theora encoding via libtheora [no]
240   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
241   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
242   --enable-libv4l2         enable libv4l2/v4l-utils [no]
243   --enable-libvidstab      enable video stabilization using vid.stab [no]
244   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
245   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
246   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
247                            native implementation exists [no]
248   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
249   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
250   --enable-libwebp         enable WebP encoding via libwebp [no]
251   --enable-libx264         enable H.264 encoding via x264 [no]
252   --enable-libx265         enable HEVC encoding via x265 [no]
253   --enable-libxavs         enable AVS encoding via xavs [no]
254   --enable-libxvid         enable Xvid encoding via xvidcore,
255                            native MPEG-4/Xvid encoder exists [no]
256   --enable-libzmq          enable message passing via libzmq [no]
257   --enable-libzvbi         enable teletext support via libzvbi [no]
258   --disable-lzma           disable lzma [autodetect]
259   --enable-decklink        enable Blackmagick DeckLink output [no]
260   --enable-openal          enable OpenAL 1.1 capture support [no]
261   --enable-opencl          enable OpenCL code
262   --enable-opengl          enable OpenGL rendering [no]
263   --enable-openssl         enable openssl [no]
264   --enable-x11grab         enable X11 grabbing [no]
265   --disable-xlib           disable xlib [autodetect]
266   --disable-zlib           disable zlib [autodetect]
267
268 Toolchain options:
269   --arch=ARCH              select architecture [$arch]
270   --cpu=CPU                select the minimum required CPU (affects
271                            instruction selection, may crash on older CPUs)
272   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
273   --progs-suffix=SUFFIX    program name suffix []
274   --enable-cross-compile   assume a cross-compiler is used
275   --sysroot=PATH           root of cross-build tree
276   --sysinclude=PATH        location of cross-build system headers
277   --target-os=OS           compiler targets OS [$target_os]
278   --target-exec=CMD        command to run executables on target
279   --target-path=DIR        path to view of build directory on target
280   --target-samples=DIR     path to samples directory on target
281   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
282   --toolchain=NAME         set tool defaults according to NAME
283   --nm=NM                  use nm tool NM [$nm_default]
284   --ar=AR                  use archive tool AR [$ar_default]
285   --as=AS                  use assembler AS [$as_default]
286   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
287   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
288   --cc=CC                  use C compiler CC [$cc_default]
289   --cxx=CXX                use C compiler CXX [$cxx_default]
290   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
291   --ld=LD                  use linker LD [$ld_default]
292   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
293   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
294   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
295   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
296   --host-cc=HOSTCC         use host C compiler HOSTCC
297   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
298   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
299   --host-ld=HOSTLD         use host linker HOSTLD
300   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
301   --host-libs=HLIBS        use libs HLIBS when linking for host
302   --host-os=OS             compiler host OS [$target_os]
303   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
304   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
305   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
306   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
307   --extra-libs=ELIBS       add ELIBS [$ELIBS]
308   --extra-version=STRING   version string suffix []
309   --optflags=OPTFLAGS      override optimization-related compiler flags
310   --build-suffix=SUFFIX    library name suffix []
311   --enable-pic             build position-independent code
312   --enable-thumb           compile for Thumb instruction set
313   --enable-lto             use link-time optimization
314
315 Advanced options (experts only):
316   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
317   --disable-symver         disable symbol versioning
318   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
319   --disable-safe-bitstream-reader
320                            disable buffer boundary checking in bitreaders
321                            (faster, but may crash)
322   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
323   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
324
325 Optimization options (experts only):
326   --disable-asm            disable all assembly optimizations
327   --disable-altivec        disable AltiVec optimizations
328   --disable-amd3dnow       disable 3DNow! optimizations
329   --disable-amd3dnowext    disable 3DNow! extended optimizations
330   --disable-mmx            disable MMX optimizations
331   --disable-mmxext         disable MMXEXT optimizations
332   --disable-sse            disable SSE optimizations
333   --disable-sse2           disable SSE2 optimizations
334   --disable-sse3           disable SSE3 optimizations
335   --disable-ssse3          disable SSSE3 optimizations
336   --disable-sse4           disable SSE4 optimizations
337   --disable-sse42          disable SSE4.2 optimizations
338   --disable-avx            disable AVX optimizations
339   --disable-xop            disable XOP optimizations
340   --disable-fma3           disable FMA3 optimizations
341   --disable-fma4           disable FMA4 optimizations
342   --disable-avx2           disable AVX2 optimizations
343   --disable-armv5te        disable armv5te optimizations
344   --disable-armv6          disable armv6 optimizations
345   --disable-armv6t2        disable armv6t2 optimizations
346   --disable-vfp            disable VFP optimizations
347   --disable-neon           disable NEON optimizations
348   --disable-inline-asm     disable use of inline assembly
349   --disable-yasm           disable use of nasm/yasm assembly
350   --disable-mips32r2       disable MIPS32R2 optimizations
351   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
352   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
353   --disable-mipsfpu        disable floating point MIPS optimizations
354   --disable-fast-unaligned consider unaligned accesses slow
355
356 Developer options (useful when working on FFmpeg itself):
357   --disable-debug          disable debugging symbols
358   --enable-debug=LEVEL     set the debug level [$debuglevel]
359   --disable-optimizations  disable compiler optimizations
360   --enable-extra-warnings  enable more compiler warnings
361   --disable-stripping      disable stripping of executables and shared libraries
362   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
363                            2 causes a slowdown at runtime.
364   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
365   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
366                            leaks and errors, using the specified valgrind binary.
367                            Cannot be combined with --target-exec
368   --enable-ftrapv          Trap arithmetic overflows
369   --samples=PATH           location of test samples for FATE, if not set use
370                            \$FATE_SAMPLES at make invocation time.
371   --enable-neon-clobber-test check NEON registers for clobbering (should be
372                            used only for debugging purposes)
373   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
374                            should be used only for debugging purposes)
375   --enable-random          randomly enable/disable components
376   --disable-random
377   --enable-random=LIST     randomly enable/disable specific components or
378   --disable-random=LIST    component groups. LIST is a comma-separated list
379                            of NAME[:PROB] entries where NAME is a component
380                            (group) and PROB the probability associated with
381                            NAME (default 0.5).
382   --random-seed=VALUE      seed value for --enable/disable-random
383
384 NOTE: Object files are built at the place where configure is launched.
385 EOF
386   exit 0
387 }
388
389 quotes='""'
390
391 log(){
392     echo "$@" >> $logfile
393 }
394
395 log_file(){
396     log BEGIN $1
397     pr -n -t $1 >> $logfile
398     log END $1
399 }
400
401 echolog(){
402     log "$@"
403     echo "$@"
404 }
405
406 warn(){
407     log "WARNING: $*"
408     WARNINGS="${WARNINGS}WARNING: $*\n"
409 }
410
411 die(){
412     echolog "$@"
413     cat <<EOF
414
415 If you think configure made a mistake, make sure you are using the latest
416 version from Git.  If the latest version fails, report the problem to the
417 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
418 EOF
419     if disabled logging; then
420         cat <<EOF
421 Rerun configure with logging enabled (do not use --disable-logging), and
422 include the log this produces with your report.
423 EOF
424     else
425         cat <<EOF
426 Include the log file "$logfile" produced by configure as this will help
427 solve the problem.
428 EOF
429     fi
430     exit 1
431 }
432
433 # Avoid locale weirdness, besides we really just want to translate ASCII.
434 toupper(){
435     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
436 }
437
438 tolower(){
439     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
440 }
441
442 c_escape(){
443     echo "$*" | sed 's/["\\]/\\\0/g'
444 }
445
446 sh_quote(){
447     v=$(echo "$1" | sed "s/'/'\\\\''/g")
448     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
449     echo "$v"
450 }
451
452 cleanws(){
453     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
454 }
455
456 filter(){
457     pat=$1
458     shift
459     for v; do
460         eval "case $v in $pat) echo $v ;; esac"
461     done
462 }
463
464 filter_out(){
465     pat=$1
466     shift
467     for v; do
468         eval "case $v in $pat) ;; *) echo $v ;; esac"
469     done
470 }
471
472 map(){
473     m=$1
474     shift
475     for v; do eval $m; done
476 }
477
478 add_suffix(){
479     suffix=$1
480     shift
481     for v; do echo ${v}${suffix}; done
482 }
483
484 set_all(){
485     value=$1
486     shift
487     for var in $*; do
488         eval $var=$value
489     done
490 }
491
492 set_weak(){
493     value=$1
494     shift
495     for var; do
496         eval : \${$var:=$value}
497     done
498 }
499
500 sanitize_var_name(){
501     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
502 }
503
504 set_safe(){
505     var=$1
506     shift
507     eval $(sanitize_var_name "$var")='$*'
508 }
509
510 get_safe(){
511     eval echo \$$(sanitize_var_name "$1")
512 }
513
514 pushvar(){
515     for pvar in $*; do
516         eval level=\${${pvar}_level:=0}
517         eval ${pvar}_${level}="\$$pvar"
518         eval ${pvar}_level=$(($level+1))
519     done
520 }
521
522 popvar(){
523     for pvar in $*; do
524         eval level=\${${pvar}_level:-0}
525         test $level = 0 && continue
526         eval level=$(($level-1))
527         eval $pvar="\${${pvar}_${level}}"
528         eval ${pvar}_level=$level
529         eval unset ${pvar}_${level}
530     done
531 }
532
533 enable(){
534     set_all yes $*
535 }
536
537 disable(){
538     set_all no $*
539 }
540
541 enable_weak(){
542     set_weak yes $*
543 }
544
545 disable_weak(){
546     set_weak no $*
547 }
548
549 enable_safe(){
550     for var; do
551         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
552     done
553 }
554
555 disable_safe(){
556     for var; do
557         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
558     done
559 }
560
561 do_enable_deep(){
562     for var; do
563         enabled $var && continue
564         eval sel="\$${var}_select"
565         eval sgs="\$${var}_suggest"
566         pushvar var sgs
567         enable_deep $sel
568         popvar sgs
569         enable_deep_weak $sgs
570         popvar var
571     done
572 }
573
574 enable_deep(){
575     do_enable_deep $*
576     enable $*
577 }
578
579 enable_deep_weak(){
580     for var; do
581         disabled $var && continue
582         pushvar var
583         do_enable_deep $var
584         popvar var
585         enable_weak $var
586     done
587 }
588
589 enabled(){
590     test "${1#!}" = "$1" && op== || op=!=
591     eval test "x\$${1#!}" $op "xyes"
592 }
593
594 disabled(){
595     test "${1#!}" = "$1" && op== || op=!=
596     eval test "x\$${1#!}" $op "xno"
597 }
598
599 enabled_all(){
600     for opt; do
601         enabled $opt || return 1
602     done
603 }
604
605 disabled_all(){
606     for opt; do
607         disabled $opt || return 1
608     done
609 }
610
611 enabled_any(){
612     for opt; do
613         enabled $opt && return 0
614     done
615 }
616
617 disabled_any(){
618     for opt; do
619         disabled $opt && return 0
620     done
621     return 1
622 }
623
624 set_default(){
625     for opt; do
626         eval : \${$opt:=\$${opt}_default}
627     done
628 }
629
630 is_in(){
631     value=$1
632     shift
633     for var in $*; do
634         [ $var = $value ] && return 0
635     done
636     return 1
637 }
638
639 do_check_deps(){
640     for cfg; do
641         cfg="${cfg#!}"
642         enabled ${cfg}_checking && die "Circular dependency for $cfg."
643         disabled ${cfg}_checking && continue
644         enable ${cfg}_checking
645         append allopts $cfg
646
647         eval dep_all="\$${cfg}_deps"
648         eval dep_any="\$${cfg}_deps_any"
649         eval dep_sel="\$${cfg}_select"
650         eval dep_sgs="\$${cfg}_suggest"
651         eval dep_ifa="\$${cfg}_if"
652         eval dep_ifn="\$${cfg}_if_any"
653
654         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
655         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
656         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
657
658         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
659         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
660         enabled_all  $dep_all || disable $cfg
661         enabled_any  $dep_any || disable $cfg
662         disabled_any $dep_sel && disable $cfg
663
664         if enabled $cfg; then
665             enable_deep $dep_sel
666             enable_deep_weak $dep_sgs
667         fi
668
669         disable ${cfg}_checking
670     done
671 }
672
673 check_deps(){
674     unset allopts
675
676     do_check_deps "$@"
677
678     for cfg in $allopts; do
679         enabled $cfg || continue
680         eval dep_extralibs="\$${cfg}_extralibs"
681         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
682     done
683 }
684
685 print_config(){
686     pfx=$1
687     files=$2
688     shift 2
689     map 'eval echo "$v \${$v:-no}"' "$@" |
690     awk "BEGIN { split(\"$files\", files) }
691         {
692             c = \"$pfx\" toupper(\$1);
693             v = \$2;
694             sub(/yes/, 1, v);
695             sub(/no/,  0, v);
696             for (f in files) {
697                 file = files[f];
698                 if (file ~ /\\.h\$/) {
699                     printf(\"#define %s %d\\n\", c, v) >>file;
700                 } else if (file ~ /\\.asm\$/) {
701                     printf(\"%%define %s %d\\n\", c, v) >>file;
702                 } else if (file ~ /\\.mak\$/) {
703                     n = -v ? \"\" : \"!\";
704                     printf(\"%s%s=yes\\n\", n, c) >>file;
705                 } else if (file ~ /\\.texi\$/) {
706                     pre = -v ? \"\" : \"@c \";
707                     yesno = \$2;
708                     c2 = tolower(c);
709                     gsub(/_/, \"-\", c2);
710                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
711                 }
712             }
713         }"
714 }
715
716 print_enabled(){
717     suf=$1
718     shift
719     for v; do
720         enabled $v && printf "%s\n" ${v%$suf};
721     done
722 }
723
724 append(){
725     var=$1
726     shift
727     eval "$var=\"\$$var $*\""
728 }
729
730 prepend(){
731     var=$1
732     shift
733     eval "$var=\"$* \$$var\""
734 }
735
736 unique(){
737     var=$1
738     uniq_list=""
739     for tok in $(eval echo \$$var); do
740         uniq_list="$(filter_out $tok $uniq_list) $tok"
741     done
742     eval "$var=\"${uniq_list}\""
743 }
744
745 add_cppflags(){
746     append CPPFLAGS "$@"
747 }
748
749 add_cflags(){
750     append CFLAGS $($cflags_filter "$@")
751 }
752
753 add_cxxflags(){
754     append CXXFLAGS $($cflags_filter "$@")
755 }
756
757 add_asflags(){
758     append ASFLAGS $($asflags_filter "$@")
759 }
760
761 add_ldflags(){
762     append LDFLAGS $($ldflags_filter "$@")
763 }
764
765 add_ldexeflags(){
766     append LDEXEFLAGS $($ldflags_filter "$@")
767 }
768
769 add_stripflags(){
770     append ASMSTRIPFLAGS "$@"
771 }
772
773 add_extralibs(){
774     prepend extralibs $($ldflags_filter "$@")
775 }
776
777 add_host_cppflags(){
778     append host_cppflags "$@"
779 }
780
781 add_host_cflags(){
782     append host_cflags $($host_cflags_filter "$@")
783 }
784
785 add_host_ldflags(){
786     append host_ldflags $($host_ldflags_filter "$@")
787 }
788
789 add_compat(){
790     append compat_objs $1
791     shift
792     map 'add_cppflags -D$v' "$@"
793 }
794
795 check_cmd(){
796     log "$@"
797     "$@" >> $logfile 2>&1
798 }
799
800 check_stat(){
801     log check_stat "$@"
802     stat "$1" >> $logfile 2>&1
803 }
804
805 cc_o(){
806     eval printf '%s\\n' $CC_O
807 }
808
809 cc_e(){
810     eval printf '%s\\n' $CC_E
811 }
812
813 check_cc(){
814     log check_cc "$@"
815     cat > $TMPC
816     log_file $TMPC
817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
818 }
819
820 check_cxx(){
821     log check_cxx "$@"
822     cat > $TMPCPP
823     log_file $TMPCPP
824     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
825 }
826
827 check_oc(){
828     log check_oc "$@"
829     cat > $TMPM
830     log_file $TMPM
831     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
832 }
833
834 check_cpp(){
835     log check_cpp "$@"
836     cat > $TMPC
837     log_file $TMPC
838     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
839 }
840
841 as_o(){
842     eval printf '%s\\n' $AS_O
843 }
844
845 check_as(){
846     log check_as "$@"
847     cat > $TMPS
848     log_file $TMPS
849     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
850 }
851
852 check_inline_asm(){
853     log check_inline_asm "$@"
854     name="$1"
855     code="$2"
856     shift 2
857     disable $name
858     check_cc "$@" <<EOF && enable $name
859 void foo(void){ __asm__ volatile($code); }
860 EOF
861 }
862
863 check_insn(){
864     log check_insn "$@"
865     check_inline_asm ${1}_inline "\"$2\""
866     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
867 }
868
869 check_yasm(){
870     log check_yasm "$@"
871     echo "$1" > $TMPS
872     log_file $TMPS
873     shift 1
874     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
875 }
876
877 ld_o(){
878     eval printf '%s\\n' $LD_O
879 }
880
881 check_ld(){
882     log check_ld "$@"
883     type=$1
884     shift 1
885     flags=$(filter_out '-l*|*.so' $@)
886     libs=$(filter '-l*|*.so' $@)
887     check_$type $($cflags_filter $flags) || return
888     flags=$($ldflags_filter $flags)
889     libs=$($ldflags_filter $libs)
890     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
891 }
892
893 print_include(){
894     hdr=$1
895     test "${hdr%.h}" = "${hdr}" &&
896         echo "#include $hdr"    ||
897         echo "#include <$hdr>"
898 }
899
900 check_code(){
901     log check_code "$@"
902     check=$1
903     headers=$2
904     code=$3
905     shift 3
906     {
907         for hdr in $headers; do
908             print_include $hdr
909         done
910         echo "int main(void) { $code; return 0; }"
911     } | check_$check "$@"
912 }
913
914 check_cppflags(){
915     log check_cppflags "$@"
916     check_cc "$@" <<EOF && append CPPFLAGS "$@"
917 int x;
918 EOF
919 }
920
921 test_cflags(){
922     log test_cflags "$@"
923     set -- $($cflags_filter "$@")
924     check_cc "$@" <<EOF
925 int x;
926 EOF
927 }
928
929 check_cflags(){
930     log check_cflags "$@"
931     test_cflags "$@" && add_cflags "$@"
932 }
933
934 check_cxxflags(){
935     log check_cxxflags "$@"
936     set -- $($cflags_filter "$@")
937     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
938 int x;
939 EOF
940 }
941
942 test_ldflags(){
943     log test_ldflags "$@"
944     check_ld "cc" "$@" <<EOF
945 int main(void){ return 0; }
946 EOF
947 }
948
949 check_ldflags(){
950     log check_ldflags "$@"
951     test_ldflags "$@" && add_ldflags "$@"
952 }
953
954 test_stripflags(){
955     log test_stripflags "$@"
956     # call check_cc to get a fresh TMPO
957     check_cc <<EOF
958 int main(void) { return 0; }
959 EOF
960     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
961 }
962
963 check_stripflags(){
964     log check_stripflags "$@"
965     test_stripflags "$@" && add_stripflags "$@"
966 }
967
968 check_header(){
969     log check_header "$@"
970     header=$1
971     shift
972     disable_safe $header
973     check_cpp "$@" <<EOF && enable_safe $header
974 #include <$header>
975 int x;
976 EOF
977 }
978
979 check_header_oc(){
980     log check_header_oc "$@"
981     rm -f -- "$TMPO"
982     header=$1
983     shift
984     disable_safe $header
985     {
986        echo "#include <$header>"
987        echo "int main(void) { return 0; }"
988     } | check_oc && check_stat "$TMPO" && enable_safe $headers
989 }
990
991 check_func(){
992     log check_func "$@"
993     func=$1
994     shift
995     disable $func
996     check_ld "cc" "$@" <<EOF && enable $func
997 extern int $func();
998 int main(void){ $func(); }
999 EOF
1000 }
1001
1002 check_mathfunc(){
1003     log check_mathfunc "$@"
1004     func=$1
1005     narg=$2
1006     shift 2
1007     test $narg = 2 && args="f, g" || args="f"
1008     disable $func
1009     check_ld "cc" "$@" <<EOF && enable $func
1010 #include <math.h>
1011 float foo(float f, float g) { return $func($args); }
1012 int main(void){ return (int) foo; }
1013 EOF
1014 }
1015
1016 check_func_headers(){
1017     log check_func_headers "$@"
1018     headers=$1
1019     funcs=$2
1020     shift 2
1021     {
1022         for hdr in $headers; do
1023             print_include $hdr
1024         done
1025         for func in $funcs; do
1026             echo "long check_$func(void) { return (long) $func; }"
1027         done
1028         echo "int main(void) { return 0; }"
1029     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1030 }
1031
1032 check_class_headers_cpp(){
1033     log check_class_headers_cpp "$@"
1034     headers=$1
1035     classes=$2
1036     shift 2
1037     {
1038         for hdr in $headers; do
1039             echo "#include <$hdr>"
1040         done
1041         echo "int main(void) { "
1042         i=1
1043         for class in $classes; do
1044             echo "$class obj$i;"
1045             i=$(expr $i + 1)
1046         done
1047         echo "return 0; }"
1048     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1049 }
1050
1051 check_cpp_condition(){
1052     log check_cpp_condition "$@"
1053     header=$1
1054     condition=$2
1055     shift 2
1056     check_cpp "$@" <<EOF
1057 #include <$header>
1058 #if !($condition)
1059 #error "unsatisfied condition: $condition"
1060 #endif
1061 EOF
1062 }
1063
1064 check_lib(){
1065     log check_lib "$@"
1066     header="$1"
1067     func="$2"
1068     shift 2
1069     check_header $header && check_func $func "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib2(){
1073     log check_lib2 "$@"
1074     headers="$1"
1075     funcs="$2"
1076     shift 2
1077     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_lib_cpp(){
1081     log check_lib_cpp "$@"
1082     headers="$1"
1083     classes="$2"
1084     shift 2
1085     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1086 }
1087
1088 check_pkg_config(){
1089     log check_pkg_config "$@"
1090     pkgandversion="$1"
1091     pkg="${1%% *}"
1092     headers="$2"
1093     funcs="$3"
1094     shift 3
1095     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1096     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1097     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1098     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1099         set_safe ${pkg}_cflags $pkg_cflags   &&
1100         set_safe ${pkg}_libs   $pkg_libs
1101 }
1102
1103 check_exec(){
1104     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1105 }
1106
1107 check_exec_crash(){
1108     code=$(cat)
1109
1110     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1111     # are safe but may not be available everywhere.  Thus we use
1112     # raise(SIGTERM) instead.  The check is run in a subshell so we
1113     # can redirect the "Terminated" message from the shell.  SIGBUS
1114     # is not defined by standard C so it is used conditionally.
1115
1116     (check_exec "$@") >> $logfile 2>&1 <<EOF
1117 #include <signal.h>
1118 static void sighandler(int sig){
1119     raise(SIGTERM);
1120 }
1121 int foo(void){
1122     $code
1123 }
1124 int (*func_ptr)(void) = foo;
1125 int main(void){
1126     signal(SIGILL, sighandler);
1127     signal(SIGFPE, sighandler);
1128     signal(SIGSEGV, sighandler);
1129 #ifdef SIGBUS
1130     signal(SIGBUS, sighandler);
1131 #endif
1132     return func_ptr();
1133 }
1134 EOF
1135 }
1136
1137 check_type(){
1138     log check_type "$@"
1139     headers=$1
1140     type=$2
1141     shift 2
1142     disable_safe "$type"
1143     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1144 }
1145
1146 check_struct(){
1147     log check_struct "$@"
1148     headers=$1
1149     struct=$2
1150     member=$3
1151     shift 3
1152     disable_safe "${struct}_${member}"
1153     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1154         enable_safe "${struct}_${member}"
1155 }
1156
1157 check_builtin(){
1158     log check_builtin "$@"
1159     name=$1
1160     headers=$2
1161     builtin=$3
1162     shift 3
1163     disable "$name"
1164     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1165 }
1166
1167 check_compile_assert(){
1168     log check_compile_assert "$@"
1169     name=$1
1170     headers=$2
1171     condition=$3
1172     shift 3
1173     disable "$name"
1174     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1175 }
1176
1177 require(){
1178     name="$1"
1179     header="$2"
1180     func="$3"
1181     shift 3
1182     check_lib $header $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require2(){
1186     name="$1"
1187     headers="$2"
1188     func="$3"
1189     shift 3
1190     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_cpp(){
1194     name="$1"
1195     headers="$2"
1196     classes="$3"
1197     shift 3
1198     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1199 }
1200
1201 require_pkg_config(){
1202     pkg="$1"
1203     check_pkg_config "$@" || die "ERROR: $pkg not found"
1204     add_cflags    $(get_safe ${pkg}_cflags)
1205     add_extralibs $(get_safe ${pkg}_libs)
1206 }
1207
1208 require_libfreetype(){
1209     log require_libfreetype "$@"
1210     pkg="freetype2"
1211     check_cmd $pkg_config --exists --print-errors $pkg \
1212       || die "ERROR: $pkg not found"
1213     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1214     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1215     {
1216         echo "#include <ft2build.h>"
1217         echo "#include FT_FREETYPE_H"
1218         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1219         echo "int main(void) { return 0; }"
1220     } | check_ld "cc" $pkg_cflags $pkg_libs \
1221       && set_safe ${pkg}_cflags $pkg_cflags \
1222       && set_safe ${pkg}_libs   $pkg_libs \
1223       || die "ERROR: $pkg not found"
1224     add_cflags    $(get_safe ${pkg}_cflags)
1225     add_extralibs $(get_safe ${pkg}_libs)
1226 }
1227
1228 hostcc_e(){
1229     eval printf '%s\\n' $HOSTCC_E
1230 }
1231
1232 hostcc_o(){
1233     eval printf '%s\\n' $HOSTCC_O
1234 }
1235
1236 check_host_cc(){
1237     log check_host_cc "$@"
1238     cat > $TMPC
1239     log_file $TMPC
1240     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1241 }
1242
1243 check_host_cpp(){
1244     log check_host_cpp "$@"
1245     cat > $TMPC
1246     log_file $TMPC
1247     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1248 }
1249
1250 check_host_cppflags(){
1251     log check_host_cppflags "$@"
1252     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cflags(){
1258     log check_host_cflags "$@"
1259     set -- $($host_cflags_filter "$@")
1260     check_host_cc "$@" <<EOF && append host_cflags "$@"
1261 int x;
1262 EOF
1263 }
1264
1265 check_host_cpp_condition(){
1266     log check_host_cpp_condition "$@"
1267     header=$1
1268     condition=$2
1269     shift 2
1270     check_host_cpp "$@" <<EOF
1271 #include <$header>
1272 #if !($condition)
1273 #error "unsatisfied condition: $condition"
1274 #endif
1275 EOF
1276 }
1277
1278 apply(){
1279     file=$1
1280     shift
1281     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1282 }
1283
1284 cp_if_changed(){
1285     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1286     mkdir -p "$(dirname $2)"
1287     $cp_f "$1" "$2"
1288 }
1289
1290 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1291 # system-dependent things.
1292
1293 COMPONENT_LIST="
1294     bsfs
1295     decoders
1296     demuxers
1297     encoders
1298     filters
1299     hwaccels
1300     indevs
1301     muxers
1302     outdevs
1303     parsers
1304     protocols
1305 "
1306
1307 EXAMPLE_LIST="
1308     avio_reading_example
1309     decoding_encoding_example
1310     demuxing_decoding_example
1311     extract_mvs_example
1312     filter_audio_example
1313     filtering_audio_example
1314     filtering_video_example
1315     metadata_example
1316     muxing_example
1317     remuxing_example
1318     resampling_audio_example
1319     scaling_video_example
1320     transcode_aac_example
1321     transcoding_example
1322 "
1323
1324 EXTERNAL_LIBRARY_LIST="
1325     avisynth
1326     bzlib
1327     crystalhd
1328     decklink
1329     frei0r
1330     gnutls
1331     iconv
1332     ladspa
1333     libaacplus
1334     libass
1335     libbluray
1336     libbs2b
1337     libcaca
1338     libcdio
1339     libcelt
1340     libdc1394
1341     libfaac
1342     libfdk_aac
1343     libflite
1344     libfontconfig
1345     libfreetype
1346     libfribidi
1347     libgme
1348     libgsm
1349     libiec61883
1350     libilbc
1351     libmodplug
1352     libmp3lame
1353     libnut
1354     libopencore_amrnb
1355     libopencore_amrwb
1356     libopencv
1357     libopenjpeg
1358     libopus
1359     libpulse
1360     libquvi
1361     librtmp
1362     libschroedinger
1363     libshine
1364     libsmbclient
1365     libsoxr
1366     libspeex
1367     libssh
1368     libstagefright_h264
1369     libtheora
1370     libtwolame
1371     libutvideo
1372     libv4l2
1373     libvidstab
1374     libvo_aacenc
1375     libvo_amrwbenc
1376     libvorbis
1377     libvpx
1378     libwavpack
1379     libwebp
1380     libx264
1381     libx265
1382     libxavs
1383     libxvid
1384     libzmq
1385     libzvbi
1386     lzma
1387     openal
1388     opencl
1389     opengl
1390     openssl
1391     x11grab
1392     xlib
1393     zlib
1394 "
1395
1396 DOCUMENT_LIST="
1397     doc
1398     htmlpages
1399     manpages
1400     podpages
1401     txtpages
1402 "
1403
1404 FEATURE_LIST="
1405     ftrapv
1406     gray
1407     hardcoded_tables
1408     runtime_cpudetect
1409     safe_bitstream_reader
1410     shared
1411     small
1412     static
1413     swscale_alpha
1414 "
1415
1416 HWACCEL_LIST="
1417     dxva2
1418     vaapi
1419     vda
1420     vdpau
1421     xvmc
1422 "
1423
1424 LIBRARY_LIST="
1425     avcodec
1426     avdevice
1427     avfilter
1428     avformat
1429     avresample
1430     avutil
1431     postproc
1432     swresample
1433     swscale
1434 "
1435
1436 LICENSE_LIST="
1437     gpl
1438     nonfree
1439     version3
1440 "
1441
1442 PROGRAM_LIST="
1443     ffplay
1444     ffprobe
1445     ffserver
1446     ffmpeg
1447 "
1448
1449 SUBSYSTEM_LIST="
1450     dct
1451     dwt
1452     error_resilience
1453     faan
1454     fast_unaligned
1455     fft
1456     lsp
1457     lzo
1458     mdct
1459     pixelutils
1460     network
1461     rdft
1462 "
1463
1464 CONFIG_LIST="
1465     $COMPONENT_LIST
1466     $DOCUMENT_LIST
1467     $EXAMPLE_LIST
1468     $EXTERNAL_LIBRARY_LIST
1469     $FEATURE_LIST
1470     $HWACCEL_LIST
1471     $LICENSE_LIST
1472     $LIBRARY_LIST
1473     $PROGRAM_LIST
1474     $SUBSYSTEM_LIST
1475     fontconfig
1476     incompatible_libav_abi
1477     memalign_hack
1478     memory_poisoning
1479     neon_clobber_test
1480     pic
1481     pod2man
1482     raise_major
1483     thumb
1484     xmm_clobber_test
1485 "
1486
1487 THREADS_LIST="
1488     pthreads
1489     os2threads
1490     w32threads
1491 "
1492
1493 ATOMICS_LIST="
1494     atomics_gcc
1495     atomics_suncc
1496     atomics_win32
1497 "
1498
1499 ARCH_LIST="
1500     aarch64
1501     alpha
1502     arm
1503     avr32
1504     avr32_ap
1505     avr32_uc
1506     bfin
1507     ia64
1508     m68k
1509     mips
1510     mips64
1511     parisc
1512     ppc
1513     ppc64
1514     s390
1515     sh4
1516     sparc
1517     sparc64
1518     tilegx
1519     tilepro
1520     tomi
1521     x86
1522     x86_32
1523     x86_64
1524 "
1525
1526 ARCH_EXT_LIST_ARM="
1527     armv5te
1528     armv6
1529     armv6t2
1530     armv8
1531     neon
1532     vfp
1533     vfpv3
1534     setend
1535 "
1536
1537 ARCH_EXT_LIST_MIPS="
1538     mipsfpu
1539     mips32r2
1540     mipsdspr1
1541     mipsdspr2
1542 "
1543
1544 ARCH_EXT_LIST_X86_SIMD="
1545     amd3dnow
1546     amd3dnowext
1547     avx
1548     avx2
1549     fma3
1550     fma4
1551     mmx
1552     mmxext
1553     sse
1554     sse2
1555     sse3
1556     sse4
1557     sse42
1558     ssse3
1559     xop
1560 "
1561
1562 ARCH_EXT_LIST_PPC="
1563     altivec
1564     dcbzl
1565     ldbrx
1566     ppc4xx
1567     vsx
1568 "
1569
1570 ARCH_EXT_LIST_X86="
1571     $ARCH_EXT_LIST_X86_SIMD
1572     cpunop
1573     i686
1574 "
1575
1576 ARCH_EXT_LIST="
1577     $ARCH_EXT_LIST_ARM
1578     $ARCH_EXT_LIST_PPC
1579     $ARCH_EXT_LIST_X86
1580     $ARCH_EXT_LIST_MIPS
1581     loongson
1582 "
1583
1584 ARCH_FEATURES="
1585     aligned_stack
1586     fast_64bit
1587     fast_clz
1588     fast_cmov
1589     local_aligned_8
1590     local_aligned_16
1591     local_aligned_32
1592     simd_align_16
1593 "
1594
1595 BUILTIN_LIST="
1596     atomic_cas_ptr
1597     machine_rw_barrier
1598     MemoryBarrier
1599     mm_empty
1600     rdtsc
1601     sarestart
1602     sync_val_compare_and_swap
1603 "
1604 HAVE_LIST_CMDLINE="
1605     inline_asm
1606     symver
1607     yasm
1608 "
1609
1610 HAVE_LIST_PUB="
1611     bigendian
1612     fast_unaligned
1613     incompatible_libav_abi
1614 "
1615
1616 HEADERS_LIST="
1617     alsa_asoundlib_h
1618     altivec_h
1619     arpa_inet_h
1620     asm_types_h
1621     cdio_paranoia_h
1622     cdio_paranoia_paranoia_h
1623     CL_cl_h
1624     dev_bktr_ioctl_bt848_h
1625     dev_bktr_ioctl_meteor_h
1626     dev_ic_bt8xx_h
1627     dev_video_bktr_ioctl_bt848_h
1628     dev_video_meteor_ioctl_meteor_h
1629     direct_h
1630     dlfcn_h
1631     dxva_h
1632     ES2_gl_h
1633     gsm_h
1634     io_h
1635     mach_mach_time_h
1636     machine_ioctl_bt848_h
1637     machine_ioctl_meteor_h
1638     malloc_h
1639     openjpeg_1_5_openjpeg_h
1640     OpenGL_gl3_h
1641     poll_h
1642     sndio_h
1643     soundcard_h
1644     sys_mman_h
1645     sys_param_h
1646     sys_resource_h
1647     sys_select_h
1648     sys_soundcard_h
1649     sys_time_h
1650     sys_un_h
1651     sys_videoio_h
1652     termios_h
1653     unistd_h
1654     windows_h
1655     winsock2_h
1656 "
1657
1658 INTRINSICS_LIST="
1659     intrinsics_neon
1660 "
1661
1662 MATH_FUNCS="
1663     atanf
1664     atan2f
1665     cbrt
1666     cbrtf
1667     cosf
1668     exp2
1669     exp2f
1670     expf
1671     fminf
1672     isinf
1673     isnan
1674     ldexpf
1675     llrint
1676     llrintf
1677     log2
1678     log2f
1679     log10f
1680     lrint
1681     lrintf
1682     powf
1683     rint
1684     round
1685     roundf
1686     sinf
1687     trunc
1688     truncf
1689 "
1690
1691 SYSTEM_FUNCS="
1692     access
1693     aligned_malloc
1694     clock_gettime
1695     closesocket
1696     CommandLineToArgvW
1697     CoTaskMemFree
1698     CryptGenRandom
1699     dlopen
1700     fcntl
1701     flt_lim
1702     fork
1703     getaddrinfo
1704     gethrtime
1705     getopt
1706     GetProcessAffinityMask
1707     GetProcessMemoryInfo
1708     GetProcessTimes
1709     getrusage
1710     getservbyport
1711     GetSystemTimeAsFileTime
1712     gettimeofday
1713     glob
1714     glXGetProcAddress
1715     inet_aton
1716     isatty
1717     jack_port_get_latency_range
1718     kbhit
1719     localtime_r
1720     lzo1x_999_compress
1721     mach_absolute_time
1722     MapViewOfFile
1723     memalign
1724     mkstemp
1725     mmap
1726     mprotect
1727     nanosleep
1728     PeekNamedPipe
1729     posix_memalign
1730     pthread_cancel
1731     sched_getaffinity
1732     SetConsoleTextAttribute
1733     setmode
1734     setrlimit
1735     Sleep
1736     strerror_r
1737     sysconf
1738     sysctl
1739     usleep
1740     VirtualAlloc
1741     wglGetProcAddress
1742 "
1743
1744 TOOLCHAIN_FEATURES="
1745     as_dn_directive
1746     as_func
1747     asm_mod_q
1748     attribute_may_alias
1749     attribute_packed
1750     ebp_available
1751     ebx_available
1752     gnu_as
1753     gnu_windres
1754     ibm_asm
1755     inline_asm_labels
1756     inline_asm_nonlocal_labels
1757     inline_asm_direct_symbol_refs
1758     pragma_deprecated
1759     rsync_contimeout
1760     symver_asm_label
1761     symver_gnu_asm
1762     vfp_args
1763     xform_asm
1764     xmm_clobbers
1765 "
1766
1767 TYPES_LIST="
1768     socklen_t
1769     struct_addrinfo
1770     struct_group_source_req
1771     struct_ip_mreq_source
1772     struct_ipv6_mreq
1773     struct_pollfd
1774     struct_rusage_ru_maxrss
1775     struct_sctp_event_subscribe
1776     struct_sockaddr_in6
1777     struct_sockaddr_sa_len
1778     struct_sockaddr_storage
1779     struct_stat_st_mtim_tv_nsec
1780     struct_v4l2_frmivalenum_discrete
1781 "
1782
1783 HAVE_LIST="
1784     $ARCH_EXT_LIST
1785     $(add_suffix _external $ARCH_EXT_LIST)
1786     $(add_suffix _inline   $ARCH_EXT_LIST)
1787     $ARCH_FEATURES
1788     $ATOMICS_LIST
1789     $BUILTIN_LIST
1790     $HAVE_LIST_CMDLINE
1791     $HAVE_LIST_PUB
1792     $HEADERS_LIST
1793     $INTRINSICS_LIST
1794     $MATH_FUNCS
1795     $SYSTEM_FUNCS
1796     $THREADS_LIST
1797     $TOOLCHAIN_FEATURES
1798     $TYPES_LIST
1799     atomics_native
1800     dos_paths
1801     dxva2api_cobj
1802     dxva2_lib
1803     libc_msvcrt
1804     libdc1394_1
1805     libdc1394_2
1806     makeinfo
1807     makeinfo_html
1808     perl
1809     pod2man
1810     sdl
1811     texi2html
1812     threads
1813     vdpau_x11
1814     xlib
1815 "
1816
1817 # options emitted with CONFIG_ prefix but not available on the command line
1818 CONFIG_EXTRA="
1819     aandcttables
1820     ac3dsp
1821     audio_frame_queue
1822     audiodsp
1823     blockdsp
1824     bswapdsp
1825     cabac
1826     dvprofile
1827     exif
1828     faandct
1829     faanidct
1830     fdctdsp
1831     frame_thread_encoder
1832     gcrypt
1833     golomb
1834     gplv3
1835     h263dsp
1836     h264chroma
1837     h264dsp
1838     h264pred
1839     h264qpel
1840     hpeldsp
1841     huffman
1842     huffyuvdsp
1843     huffyuvencdsp
1844     idctdsp
1845     iirfilter
1846     intrax8
1847     lgplv3
1848     llauddsp
1849     llviddsp
1850     lpc
1851     me_cmp
1852     mpeg_er
1853     mpegaudio
1854     mpegaudiodsp
1855     mpegvideo
1856     mpegvideoenc
1857     nettle
1858     pixblockdsp
1859     qpeldsp
1860     rangecoder
1861     riffdec
1862     riffenc
1863     rtpdec
1864     rtpenc_chain
1865     sinewin
1866     startcode
1867     tpeldsp
1868     videodsp
1869     vp3dsp
1870     wma_freqs
1871 "
1872
1873 CMDLINE_SELECT="
1874     $ARCH_EXT_LIST
1875     $CONFIG_LIST
1876     $HAVE_LIST_CMDLINE
1877     $THREADS_LIST
1878     asm
1879     cross_compile
1880     debug
1881     extra_warnings
1882     logging
1883     lto
1884     optimizations
1885     rpath
1886     stripping
1887 "
1888
1889 PATHS_LIST="
1890     bindir
1891     datadir
1892     docdir
1893     incdir
1894     libdir
1895     mandir
1896     prefix
1897     shlibdir
1898 "
1899
1900 CMDLINE_SET="
1901     $PATHS_LIST
1902     ar
1903     arch
1904     as
1905     assert_level
1906     build_suffix
1907     cc
1908     cpu
1909     cross_prefix
1910     cxx
1911     dep_cc
1912     doxygen
1913     extra_version
1914     gas
1915     host_cc
1916     host_cflags
1917     host_ld
1918     host_ldflags
1919     host_libs
1920     host_os
1921     install
1922     ld
1923     logfile
1924     malloc_prefix
1925     nm
1926     optflags
1927     pkg_config
1928     pkg_config_flags
1929     progs_suffix
1930     random_seed
1931     ranlib
1932     samples
1933     strip
1934     sws_max_filter_size
1935     sysinclude
1936     sysroot
1937     target_exec
1938     target_os
1939     target_path
1940     target_samples
1941     tempprefix
1942     toolchain
1943     valgrind
1944     yasmexe
1945 "
1946
1947 CMDLINE_APPEND="
1948     extra_cflags
1949     extra_cxxflags
1950     host_cppflags
1951 "
1952
1953 # code dependency declarations
1954
1955 # architecture extensions
1956
1957 armv5te_deps="arm"
1958 armv6_deps="arm"
1959 armv6t2_deps="arm"
1960 armv8_deps="aarch64"
1961 neon_deps_any="aarch64 arm"
1962 intrinsics_neon_deps="neon"
1963 vfp_deps_any="aarch64 arm"
1964 vfpv3_deps="vfp"
1965 setend_deps="arm"
1966
1967 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1968
1969 mipsfpu_deps="mips"
1970 mips32r2_deps="mips"
1971 mipsdspr1_deps="mips"
1972 mipsdspr2_deps="mips"
1973
1974 altivec_deps="ppc"
1975 ppc4xx_deps="ppc"
1976 vsx_deps="ppc"
1977
1978 cpunop_deps="i686"
1979 x86_64_select="i686"
1980 x86_64_suggest="fast_cmov"
1981
1982 amd3dnow_deps="mmx"
1983 amd3dnowext_deps="amd3dnow"
1984 i686_deps="x86"
1985 mmx_deps="x86"
1986 mmxext_deps="mmx"
1987 sse_deps="mmxext"
1988 sse2_deps="sse"
1989 sse3_deps="sse2"
1990 ssse3_deps="sse3"
1991 sse4_deps="ssse3"
1992 sse42_deps="sse4"
1993 avx_deps="sse42"
1994 xop_deps="avx"
1995 fma3_deps="avx"
1996 fma4_deps="avx"
1997 avx2_deps="avx"
1998
1999 mmx_external_deps="yasm"
2000 mmx_inline_deps="inline_asm"
2001 mmx_suggest="mmx_external mmx_inline"
2002
2003 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2004     eval dep=\$${ext}_deps
2005     eval ${ext}_external_deps='"${dep}_external"'
2006     eval ${ext}_inline_deps='"${dep}_inline"'
2007     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2008 done
2009
2010 aligned_stack_if_any="aarch64 ppc x86"
2011 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2012 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2013 fast_unaligned_if_any="aarch64 ppc x86"
2014 simd_align_16_if_any="altivec neon sse"
2015
2016 # system capabilities
2017
2018 symver_if_any="symver_asm_label symver_gnu_asm"
2019
2020 # threading support
2021 atomics_gcc_if="sync_val_compare_and_swap"
2022 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2023 atomics_win32_if="MemoryBarrier"
2024 atomics_native_if_any="$ATOMICS_LIST"
2025 w32threads_deps="atomics_native"
2026 threads_if_any="$THREADS_LIST"
2027
2028 # subsystems
2029 dct_select="rdft"
2030 error_resilience_select="me_cmp"
2031 faandct_deps="faan fdctdsp"
2032 faanidct_deps="faan idctdsp"
2033 frame_thread_encoder_deps="encoders threads"
2034 intrax8_select="error_resilience"
2035 mdct_select="fft"
2036 rdft_select="fft"
2037 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2038 mpeg_er_select="error_resilience"
2039 mpegaudio_select="mpegaudiodsp"
2040 mpegaudiodsp_select="dct"
2041 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2042 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2043
2044 # decoders / encoders
2045 aac_decoder_select="mdct sinewin"
2046 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2047 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2048 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2049 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2050 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2051 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2052 aic_decoder_select="golomb idctdsp"
2053 alac_encoder_select="lpc"
2054 als_decoder_select="bswapdsp"
2055 amrnb_decoder_select="lsp"
2056 amrwb_decoder_select="lsp"
2057 amv_decoder_select="sp5x_decoder exif"
2058 amv_encoder_select="aandcttables mpegvideoenc"
2059 ape_decoder_select="bswapdsp llauddsp"
2060 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2061 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2062 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2063 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2064 atrac1_decoder_select="mdct sinewin"
2065 atrac3_decoder_select="mdct"
2066 atrac3p_decoder_select="mdct sinewin"
2067 avrn_decoder_select="exif"
2068 bink_decoder_select="blockdsp hpeldsp"
2069 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2070 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2071 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2072 cllc_decoder_select="bswapdsp"
2073 comfortnoise_encoder_select="lpc"
2074 cook_decoder_select="audiodsp mdct sinewin"
2075 cscd_decoder_select="lzo"
2076 cscd_decoder_suggest="zlib"
2077 dca_decoder_select="mdct"
2078 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2079 dnxhd_decoder_select="blockdsp idctdsp"
2080 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2081 dvvideo_decoder_select="dvprofile idctdsp"
2082 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2083 dxa_decoder_select="zlib"
2084 eac3_decoder_select="ac3_decoder"
2085 eac3_encoder_select="ac3_encoder"
2086 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2087 eatgq_decoder_select="aandcttables"
2088 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2089 exr_decoder_select="zlib"
2090 ffv1_decoder_select="golomb rangecoder"
2091 ffv1_encoder_select="rangecoder"
2092 ffvhuff_decoder_select="huffyuv_decoder"
2093 ffvhuff_encoder_select="huffyuv_encoder"
2094 fic_decoder_select="golomb"
2095 flac_decoder_select="golomb"
2096 flac_encoder_select="bswapdsp golomb lpc"
2097 flashsv_decoder_select="zlib"
2098 flashsv_encoder_select="zlib"
2099 flashsv2_encoder_select="zlib"
2100 flashsv2_decoder_select="zlib"
2101 flv_decoder_select="h263_decoder"
2102 flv_encoder_select="h263_encoder"
2103 fourxm_decoder_select="blockdsp bswapdsp"
2104 fraps_decoder_select="bswapdsp huffman"
2105 g2m_decoder_select="blockdsp idctdsp zlib"
2106 g729_decoder_select="audiodsp"
2107 h261_decoder_select="mpeg_er mpegvideo"
2108 h261_encoder_select="aandcttables mpegvideoenc"
2109 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2110 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2111 h263i_decoder_select="h263_decoder"
2112 h263p_encoder_select="h263_encoder"
2113 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2114 h264_decoder_suggest="error_resilience"
2115 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2116 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2117 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2118 iac_decoder_select="imc_decoder"
2119 imc_decoder_select="bswapdsp fft mdct sinewin"
2120 indeo3_decoder_select="hpeldsp"
2121 interplay_video_decoder_select="hpeldsp"
2122 jpegls_decoder_select="golomb mjpeg_decoder"
2123 jpegls_encoder_select="golomb"
2124 jv_decoder_select="blockdsp"
2125 lagarith_decoder_select="huffyuvdsp"
2126 ljpeg_encoder_select="aandcttables idctdsp"
2127 loco_decoder_select="golomb"
2128 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2129 metasound_decoder_select="lsp mdct sinewin"
2130 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2131 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2132 mjpeg_encoder_select="aandcttables mpegvideoenc"
2133 mjpegb_decoder_select="mjpeg_decoder"
2134 mlp_decoder_select="mlp_parser"
2135 motionpixels_decoder_select="bswapdsp"
2136 mp1_decoder_select="mpegaudio"
2137 mp1float_decoder_select="mpegaudio"
2138 mp2_decoder_select="mpegaudio"
2139 mp2float_decoder_select="mpegaudio"
2140 mp3_decoder_select="mpegaudio"
2141 mp3adu_decoder_select="mpegaudio"
2142 mp3adufloat_decoder_select="mpegaudio"
2143 mp3float_decoder_select="mpegaudio"
2144 mp3on4_decoder_select="mpegaudio"
2145 mp3on4float_decoder_select="mpegaudio"
2146 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2147 mpc8_decoder_select="mpegaudiodsp"
2148 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2149 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2150 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2151 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2152 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2153 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2154 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2155 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2156 mpeg4_encoder_select="h263_encoder"
2157 msmpeg4v1_decoder_select="h263_decoder"
2158 msmpeg4v2_decoder_select="h263_decoder"
2159 msmpeg4v2_encoder_select="h263_encoder"
2160 msmpeg4v3_decoder_select="h263_decoder"
2161 msmpeg4v3_encoder_select="h263_encoder"
2162 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2163 mxpeg_decoder_select="mjpeg_decoder"
2164 nellymoser_decoder_select="mdct sinewin"
2165 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2166 nuv_decoder_select="idctdsp lzo"
2167 on2avc_decoder_select="mdct"
2168 opus_decoder_deps="swresample"
2169 png_decoder_select="zlib"
2170 png_encoder_select="huffyuvencdsp zlib"
2171 prores_decoder_select="blockdsp idctdsp"
2172 prores_encoder_select="fdctdsp"
2173 qcelp_decoder_select="lsp"
2174 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2175 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2176 ra_144_decoder_select="audiodsp"
2177 ralf_decoder_select="golomb"
2178 rawvideo_decoder_select="bswapdsp"
2179 rtjpeg_decoder_select="me_cmp"
2180 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2181 rv10_encoder_select="h263_encoder"
2182 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2183 rv20_encoder_select="h263_encoder"
2184 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2185 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2186 shorten_decoder_select="golomb"
2187 sipr_decoder_select="lsp"
2188 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2189 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2190 sonic_decoder_select="golomb rangecoder"
2191 sonic_encoder_select="golomb rangecoder"
2192 sonic_ls_encoder_select="golomb rangecoder"
2193 sp5x_decoder_select="mjpeg_decoder"
2194 svq1_decoder_select="hpeldsp"
2195 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2196 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2197 svq3_decoder_suggest="zlib"
2198 tak_decoder_select="audiodsp"
2199 theora_decoder_select="vp3_decoder"
2200 thp_decoder_select="mjpeg_decoder"
2201 tiff_decoder_suggest="zlib lzma"
2202 tiff_encoder_suggest="zlib"
2203 truehd_decoder_select="mlp_parser"
2204 truemotion2_decoder_select="bswapdsp"
2205 truespeech_decoder_select="bswapdsp"
2206 tscc_decoder_select="zlib"
2207 twinvq_decoder_select="mdct lsp sinewin"
2208 utvideo_decoder_select="bswapdsp"
2209 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2210 vble_decoder_select="huffyuvdsp"
2211 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2212 vc1image_decoder_select="vc1_decoder"
2213 vorbis_decoder_select="mdct"
2214 vorbis_encoder_select="mdct"
2215 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2216 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2217 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2218 vp6a_decoder_select="vp6_decoder"
2219 vp6f_decoder_select="vp6_decoder"
2220 vp7_decoder_select="h264pred videodsp"
2221 vp8_decoder_select="h264pred videodsp"
2222 vp9_decoder_select="videodsp vp9_parser"
2223 webp_decoder_select="vp8_decoder"
2224 wmalossless_decoder_select="llauddsp"
2225 wmapro_decoder_select="mdct sinewin wma_freqs"
2226 wmav1_decoder_select="mdct sinewin wma_freqs"
2227 wmav1_encoder_select="mdct sinewin wma_freqs"
2228 wmav2_decoder_select="mdct sinewin wma_freqs"
2229 wmav2_encoder_select="mdct sinewin wma_freqs"
2230 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2231 wmv1_decoder_select="h263_decoder"
2232 wmv1_encoder_select="h263_encoder"
2233 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2234 wmv2_encoder_select="h263_encoder"
2235 wmv3_decoder_select="vc1_decoder"
2236 wmv3image_decoder_select="wmv3_decoder"
2237 zerocodec_decoder_select="zlib"
2238 zlib_decoder_select="zlib"
2239 zlib_encoder_select="zlib"
2240 zmbv_decoder_select="zlib"
2241 zmbv_encoder_select="zlib"
2242
2243 # hardware accelerators
2244 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2245 dxva2_deps="dxva2api_h"
2246 vaapi_deps="va_va_h"
2247 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2248 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2249 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2250 xvmc_deps="X11_extensions_XvMClib_h"
2251
2252 h263_vaapi_hwaccel_deps="vaapi"
2253 h263_vaapi_hwaccel_select="h263_decoder"
2254 h263_vdpau_hwaccel_deps="vdpau"
2255 h263_vdpau_hwaccel_select="h263_decoder"
2256 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2257 h264_dxva2_hwaccel_deps="dxva2"
2258 h264_dxva2_hwaccel_select="h264_decoder"
2259 h264_vaapi_hwaccel_deps="vaapi"
2260 h264_vaapi_hwaccel_select="h264_decoder"
2261 h264_vda_decoder_deps="vda"
2262 h264_vda_decoder_select="h264_decoder"
2263 h264_vda_hwaccel_deps="vda"
2264 h264_vda_hwaccel_select="h264_decoder"
2265 h264_vda_old_hwaccel_deps="vda"
2266 h264_vda_old_hwaccel_select="h264_decoder"
2267 h264_vdpau_decoder_deps="vdpau"
2268 h264_vdpau_decoder_select="h264_decoder"
2269 h264_vdpau_hwaccel_deps="vdpau"
2270 h264_vdpau_hwaccel_select="h264_decoder"
2271 mpeg_vdpau_decoder_deps="vdpau"
2272 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2273 mpeg_xvmc_hwaccel_deps="xvmc"
2274 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2275 mpeg1_vdpau_decoder_deps="vdpau"
2276 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2277 mpeg1_vdpau_hwaccel_deps="vdpau"
2278 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2279 mpeg1_xvmc_hwaccel_deps="xvmc"
2280 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2281 mpeg2_crystalhd_decoder_select="crystalhd"
2282 mpeg2_dxva2_hwaccel_deps="dxva2"
2283 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2284 mpeg2_vaapi_hwaccel_deps="vaapi"
2285 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2286 mpeg2_vdpau_hwaccel_deps="vdpau"
2287 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2288 mpeg2_xvmc_hwaccel_deps="xvmc"
2289 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2290 mpeg4_crystalhd_decoder_select="crystalhd"
2291 mpeg4_vaapi_hwaccel_deps="vaapi"
2292 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2293 mpeg4_vdpau_decoder_deps="vdpau"
2294 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2295 mpeg4_vdpau_hwaccel_deps="vdpau"
2296 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2297 msmpeg4_crystalhd_decoder_select="crystalhd"
2298 vc1_crystalhd_decoder_select="crystalhd"
2299 vc1_dxva2_hwaccel_deps="dxva2"
2300 vc1_dxva2_hwaccel_select="vc1_decoder"
2301 vc1_vaapi_hwaccel_deps="vaapi"
2302 vc1_vaapi_hwaccel_select="vc1_decoder"
2303 vc1_vdpau_decoder_deps="vdpau"
2304 vc1_vdpau_decoder_select="vc1_decoder"
2305 vc1_vdpau_hwaccel_deps="vdpau"
2306 vc1_vdpau_hwaccel_select="vc1_decoder"
2307 wmv3_crystalhd_decoder_select="crystalhd"
2308 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2309 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2310 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2311 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2312
2313 # parsers
2314 h264_parser_select="h264_decoder"
2315 hevc_parser_select="hevc_decoder"
2316 mpegvideo_parser_select="mpegvideo"
2317 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2318 vc1_parser_select="mpegvideo startcode vc1_decoder"
2319
2320 # external libraries
2321 libaacplus_encoder_deps="libaacplus"
2322 libcelt_decoder_deps="libcelt"
2323 libfaac_encoder_deps="libfaac"
2324 libfaac_encoder_select="audio_frame_queue"
2325 libfdk_aac_decoder_deps="libfdk_aac"
2326 libfdk_aac_encoder_deps="libfdk_aac"
2327 libfdk_aac_encoder_select="audio_frame_queue"
2328 libgme_demuxer_deps="libgme"
2329 libgsm_decoder_deps="libgsm"
2330 libgsm_encoder_deps="libgsm"
2331 libgsm_ms_decoder_deps="libgsm"
2332 libgsm_ms_encoder_deps="libgsm"
2333 libilbc_decoder_deps="libilbc"
2334 libilbc_encoder_deps="libilbc"
2335 libmodplug_demuxer_deps="libmodplug"
2336 libmp3lame_encoder_deps="libmp3lame"
2337 libmp3lame_encoder_select="audio_frame_queue"
2338 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2339 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2340 libopencore_amrnb_encoder_select="audio_frame_queue"
2341 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2342 libopenjpeg_decoder_deps="libopenjpeg"
2343 libopenjpeg_encoder_deps="libopenjpeg"
2344 libopus_decoder_deps="libopus"
2345 libopus_encoder_deps="libopus"
2346 libopus_encoder_select="audio_frame_queue"
2347 libquvi_demuxer_deps="libquvi"
2348 libschroedinger_decoder_deps="libschroedinger"
2349 libschroedinger_encoder_deps="libschroedinger"
2350 libshine_encoder_deps="libshine"
2351 libshine_encoder_select="audio_frame_queue"
2352 libspeex_decoder_deps="libspeex"
2353 libspeex_encoder_deps="libspeex"
2354 libspeex_encoder_select="audio_frame_queue"
2355 libstagefright_h264_decoder_deps="libstagefright_h264"
2356 libtheora_encoder_deps="libtheora"
2357 libtwolame_encoder_deps="libtwolame"
2358 libvo_aacenc_encoder_deps="libvo_aacenc"
2359 libvo_aacenc_encoder_select="audio_frame_queue"
2360 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2361 libvorbis_decoder_deps="libvorbis"
2362 libvorbis_encoder_deps="libvorbis"
2363 libvorbis_encoder_select="audio_frame_queue"
2364 libvpx_vp8_decoder_deps="libvpx"
2365 libvpx_vp8_encoder_deps="libvpx"
2366 libvpx_vp9_decoder_deps="libvpx"
2367 libvpx_vp9_encoder_deps="libvpx"
2368 libwavpack_encoder_deps="libwavpack"
2369 libwebp_encoder_deps="libwebp"
2370 libx264_encoder_deps="libx264"
2371 libx264rgb_encoder_deps="libx264"
2372 libx265_encoder_deps="libx265"
2373 libxavs_encoder_deps="libxavs"
2374 libxvid_encoder_deps="libxvid"
2375 libutvideo_decoder_deps="libutvideo"
2376 libutvideo_encoder_deps="libutvideo"
2377 libzvbi_teletext_decoder_deps="libzvbi"
2378
2379 # demuxers / muxers
2380 ac3_demuxer_select="ac3_parser"
2381 asf_demuxer_select="riffdec"
2382 asf_muxer_select="riffenc"
2383 asf_stream_muxer_select="asf_muxer"
2384 avi_demuxer_select="riffdec exif"
2385 avi_muxer_select="riffenc"
2386 avisynth_demuxer_deps="avisynth"
2387 avisynth_demuxer_select="riffdec"
2388 caf_demuxer_select="riffdec"
2389 dirac_demuxer_select="dirac_parser"
2390 dts_demuxer_select="dca_parser"
2391 dtshd_demuxer_select="dca_parser"
2392 dv_demuxer_select="dvprofile"
2393 dv_muxer_select="dvprofile"
2394 dxa_demuxer_select="riffdec"
2395 eac3_demuxer_select="ac3_parser"
2396 f4v_muxer_select="mov_muxer"
2397 flac_demuxer_select="flac_parser"
2398 hds_muxer_select="flv_muxer"
2399 hls_muxer_select="mpegts_muxer"
2400 image2_alias_pix_demuxer_select="image2_demuxer"
2401 image2_brender_pix_demuxer_select="image2_demuxer"
2402 ipod_muxer_select="mov_muxer"
2403 ismv_muxer_select="mov_muxer"
2404 libnut_demuxer_deps="libnut"
2405 libnut_muxer_deps="libnut"
2406 matroska_audio_muxer_select="matroska_muxer"
2407 matroska_demuxer_select="riffdec"
2408 matroska_demuxer_suggest="bzlib lzo zlib"
2409 matroska_muxer_select="riffenc"
2410 mmf_muxer_select="riffenc"
2411 mov_demuxer_select="riffdec"
2412 mov_demuxer_suggest="zlib"
2413 mov_muxer_select="riffenc rtpenc_chain"
2414 mp3_demuxer_select="mpegaudio_parser"
2415 mp4_muxer_select="mov_muxer"
2416 mpegts_muxer_select="adts_muxer latm_muxer"
2417 mpegtsraw_demuxer_select="mpegts_demuxer"
2418 mxf_d10_muxer_select="mxf_muxer"
2419 nut_muxer_select="riffenc"
2420 nuv_demuxer_select="riffdec"
2421 oga_muxer_select="ogg_muxer"
2422 ogg_demuxer_select="golomb"
2423 opus_muxer_select="ogg_muxer"
2424 psp_muxer_select="mov_muxer"
2425 rtp_demuxer_select="sdp_demuxer"
2426 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2427 rtsp_demuxer_select="http_protocol rtpdec"
2428 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2429 sap_demuxer_select="sdp_demuxer"
2430 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2431 sdp_demuxer_select="rtpdec"
2432 smoothstreaming_muxer_select="ismv_muxer"
2433 spdif_muxer_select="aac_parser"
2434 spx_muxer_select="ogg_muxer"
2435 tak_demuxer_select="tak_parser"
2436 tg2_muxer_select="mov_muxer"
2437 tgp_muxer_select="mov_muxer"
2438 vobsub_demuxer_select="mpegps_demuxer"
2439 w64_demuxer_select="wav_demuxer"
2440 w64_muxer_select="wav_muxer"
2441 wav_demuxer_select="riffdec"
2442 wav_muxer_select="riffenc"
2443 webm_muxer_select="riffenc"
2444 wtv_demuxer_select="riffdec"
2445 wtv_muxer_select="riffenc"
2446 xmv_demuxer_select="riffdec"
2447 xwma_demuxer_select="riffdec"
2448
2449 # indevs / outdevs
2450 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2451 alsa_outdev_deps="alsa_asoundlib_h"
2452 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2453 avfoundation_indev_select="avfoundation"
2454 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2455 caca_outdev_deps="libcaca"
2456 decklink_outdev_deps="decklink pthreads"
2457 decklink_outdev_extralibs="-lstdc++"
2458 dshow_indev_deps="IBaseFilter"
2459 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2460 dv1394_indev_deps="dv1394"
2461 dv1394_indev_select="dv_demuxer"
2462 fbdev_indev_deps="linux_fb_h"
2463 fbdev_outdev_deps="linux_fb_h"
2464 gdigrab_indev_deps="CreateDIBSection"
2465 gdigrab_indev_extralibs="-lgdi32"
2466 gdigrab_indev_select="bmp_decoder"
2467 iec61883_indev_deps="libiec61883"
2468 jack_indev_deps="jack_jack_h sem_timedwait"
2469 lavfi_indev_deps="avfilter"
2470 libcdio_indev_deps="libcdio"
2471 libdc1394_indev_deps="libdc1394"
2472 libv4l2_indev_deps="libv4l2"
2473 openal_indev_deps="openal"
2474 opengl_outdev_deps="opengl"
2475 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2476 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2477 pulse_indev_deps="libpulse"
2478 pulse_outdev_deps="libpulse"
2479 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2480 qtkit_indev_select="qtkit"
2481 sdl_outdev_deps="sdl"
2482 sndio_indev_deps="sndio_h"
2483 sndio_outdev_deps="sndio_h"
2484 v4l_indev_deps="linux_videodev_h"
2485 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2486 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2487 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2488 vfwcap_indev_extralibs="-lavicap32"
2489 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2490 xv_outdev_extralibs="-lXv -lX11 -lXext"
2491 x11grab_indev_deps="x11grab"
2492
2493 # protocols
2494 bluray_protocol_deps="libbluray"
2495 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2496 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2497 ffrtmpcrypt_protocol_select="tcp_protocol"
2498 ffrtmphttp_protocol_deps="!librtmp_protocol"
2499 ffrtmphttp_protocol_select="http_protocol"
2500 ftp_protocol_select="tcp_protocol"
2501 gopher_protocol_select="network"
2502 http_protocol_select="tcp_protocol"
2503 httpproxy_protocol_select="tcp_protocol"
2504 https_protocol_select="tls_protocol"
2505 icecast_protocol_select="http_protocol"
2506 librtmp_protocol_deps="librtmp"
2507 librtmpe_protocol_deps="librtmp"
2508 librtmps_protocol_deps="librtmp"
2509 librtmpt_protocol_deps="librtmp"
2510 librtmpte_protocol_deps="librtmp"
2511 libsmbclient_protocol_deps="libsmbclient gplv3"
2512 libssh_protocol_deps="libssh"
2513 mmsh_protocol_select="http_protocol"
2514 mmst_protocol_select="network"
2515 rtmp_protocol_deps="!librtmp_protocol"
2516 rtmp_protocol_select="tcp_protocol"
2517 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2518 rtmps_protocol_deps="!librtmp_protocol"
2519 rtmps_protocol_select="tls_protocol"
2520 rtmpt_protocol_select="ffrtmphttp_protocol"
2521 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2522 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2523 rtp_protocol_select="udp_protocol"
2524 sctp_protocol_deps="struct_sctp_event_subscribe"
2525 sctp_protocol_select="network"
2526 srtp_protocol_select="rtp_protocol"
2527 tcp_protocol_select="network"
2528 tls_protocol_deps_any="openssl gnutls"
2529 tls_protocol_select="tcp_protocol"
2530 udp_protocol_select="network"
2531 unix_protocol_deps="sys_un_h"
2532 unix_protocol_select="network"
2533
2534 # filters
2535 aconvert_filter_deps="swresample"
2536 amovie_filter_deps="avcodec avformat"
2537 aresample_filter_deps="swresample"
2538 ass_filter_deps="libass"
2539 asyncts_filter_deps="avresample"
2540 atempo_filter_deps="avcodec"
2541 atempo_filter_select="rdft"
2542 azmq_filter_deps="libzmq"
2543 blackframe_filter_deps="gpl"
2544 boxblur_filter_deps="gpl"
2545 bs2b_filter_deps="libbs2b"
2546 colormatrix_filter_deps="gpl"
2547 cropdetect_filter_deps="gpl"
2548 delogo_filter_deps="gpl"
2549 deshake_filter_select="pixelutils"
2550 drawtext_filter_deps="libfreetype"
2551 ebur128_filter_deps="gpl"
2552 flite_filter_deps="libflite"
2553 frei0r_filter_deps="frei0r dlopen"
2554 frei0r_filter_extralibs='$ldl'
2555 frei0r_src_filter_deps="frei0r dlopen"
2556 frei0r_src_filter_extralibs='$ldl'
2557 geq_filter_deps="gpl"
2558 histeq_filter_deps="gpl"
2559 hqdn3d_filter_deps="gpl"
2560 interlace_filter_deps="gpl"
2561 kerndeint_filter_deps="gpl"
2562 ladspa_filter_deps="ladspa dlopen"
2563 ladspa_filter_extralibs='$ldl'
2564 mcdeint_filter_deps="avcodec gpl"
2565 movie_filter_deps="avcodec avformat"
2566 mp_filter_deps="gpl avcodec swscale inline_asm"
2567 mpdecimate_filter_deps="gpl"
2568 mpdecimate_filter_select="pixelutils"
2569 mptestsrc_filter_deps="gpl"
2570 negate_filter_deps="lut_filter"
2571 perspective_filter_deps="gpl"
2572 ocv_filter_deps="libopencv"
2573 owdenoise_filter_deps="gpl"
2574 pan_filter_deps="swresample"
2575 phase_filter_deps="gpl"
2576 pp_filter_deps="gpl postproc"
2577 pullup_filter_deps="gpl"
2578 removelogo_filter_deps="avcodec avformat swscale"
2579 resample_filter_deps="avresample"
2580 sab_filter_deps="gpl swscale"
2581 scale_filter_deps="swscale"
2582 select_filter_select="pixelutils"
2583 smartblur_filter_deps="gpl swscale"
2584 showspectrum_filter_deps="avcodec"
2585 showspectrum_filter_select="rdft"
2586 spp_filter_deps="gpl avcodec"
2587 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2588 stereo3d_filter_deps="gpl"
2589 subtitles_filter_deps="avformat avcodec libass"
2590 super2xsai_filter_deps="gpl"
2591 tinterlace_filter_deps="gpl"
2592 vidstabdetect_filter_deps="libvidstab"
2593 vidstabtransform_filter_deps="libvidstab"
2594 pixfmts_super2xsai_test_deps="super2xsai_filter"
2595 tinterlace_merge_test_deps="tinterlace_filter"
2596 tinterlace_pad_test_deps="tinterlace_filter"
2597 zmq_filter_deps="libzmq"
2598 zoompan_filter_deps="swscale"
2599
2600 # examples
2601 avio_reading="avformat avcodec avutil"
2602 avcodec_example_deps="avcodec avutil"
2603 decoding_encoding_example_deps="avcodec avformat avutil"
2604 demuxing_decoding_example_deps="avcodec avformat avutil"
2605 extract_mvs_example_deps="avcodec avformat avutil"
2606 filter_audio_example_deps="avfilter avutil"
2607 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2608 filtering_video_example_deps="avfilter avcodec avformat avutil"
2609 metadata_example_deps="avformat avutil"
2610 muxing_example_deps="avcodec avformat avutil swscale"
2611 remuxing_example_deps="avcodec avformat avutil"
2612 resampling_audio_example_deps="avutil swresample"
2613 scaling_video_example_deps="avutil swscale"
2614 transcode_aac_example_deps="avcodec avformat swresample"
2615 transcoding_example_deps="avfilter avcodec avformat avutil"
2616
2617 # libraries, in linking order
2618 avcodec_deps="avutil"
2619 avdevice_deps="avformat avcodec avutil"
2620 avfilter_deps="avutil"
2621 avformat_deps="avcodec avutil"
2622 avresample_deps="avutil"
2623 postproc_deps="avutil gpl"
2624 swresample_deps="avutil"
2625 swscale_deps="avutil"
2626
2627 # programs
2628 ffmpeg_deps="avcodec avfilter avformat swresample"
2629 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2630                null_filter
2631                setpts_filter trim_filter"
2632 ffplay_deps="avcodec avformat swscale swresample sdl"
2633 ffplay_libs='$sdl_libs'
2634 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2635 ffprobe_deps="avcodec avformat"
2636 ffserver_deps="avformat fork sarestart"
2637 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2638
2639 # documentation
2640 podpages_deps="perl"
2641 manpages_deps="perl pod2man"
2642 htmlpages_deps="perl"
2643 htmlpages_deps_any="makeinfo_html texi2html"
2644 txtpages_deps="perl makeinfo"
2645 doc_deps_any="manpages htmlpages podpages txtpages"
2646
2647 # default parameters
2648
2649 logfile="config.log"
2650
2651 # installation paths
2652 prefix_default="/usr/local"
2653 bindir_default='${prefix}/bin'
2654 datadir_default='${prefix}/share/ffmpeg'
2655 docdir_default='${prefix}/share/doc/ffmpeg'
2656 incdir_default='${prefix}/include'
2657 libdir_default='${prefix}/lib'
2658 mandir_default='${prefix}/share/man'
2659 shlibdir_default="$libdir_default"
2660
2661 # toolchain
2662 ar_default="ar"
2663 cc_default="gcc"
2664 cxx_default="g++"
2665 host_cc_default="gcc"
2666 cp_f="cp -f"
2667 doxygen_default="doxygen"
2668 install="install"
2669 ln_s="ln -s -f"
2670 nm_default="nm -g"
2671 objformat="elf"
2672 pkg_config_default=pkg-config
2673 ranlib_default="ranlib"
2674 strip_default="strip"
2675 yasmexe_default="yasm"
2676 windres_default="windres"
2677
2678 # OS
2679 target_os_default=$(tolower $(uname -s))
2680 host_os=$target_os_default
2681
2682 # machine
2683 if test "$target_os_default" = aix; then
2684     arch_default=$(uname -p)
2685     strip_default="strip -X32_64"
2686 else
2687     arch_default=$(uname -m)
2688 fi
2689 cpu="generic"
2690 intrinsics="none"
2691
2692 # configurable options
2693 enable $PROGRAM_LIST
2694 enable $DOCUMENT_LIST
2695 enable $EXAMPLE_LIST
2696 enable $(filter_out avresample $LIBRARY_LIST)
2697 enable stripping
2698
2699 enable asm
2700 enable debug
2701 enable doc
2702 enable faan faandct faanidct
2703 enable optimizations
2704 enable runtime_cpudetect
2705 enable safe_bitstream_reader
2706 enable static
2707 enable swscale_alpha
2708
2709 sws_max_filter_size_default=256
2710 set_default sws_max_filter_size
2711
2712 # Enable hwaccels by default.
2713 enable dxva2 vaapi vda vdpau xvmc
2714 enable xlib
2715
2716 # build settings
2717 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2718 LIBPREF="lib"
2719 LIBSUF=".a"
2720 FULLNAME='$(NAME)$(BUILDSUF)'
2721 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2722 SLIBPREF="lib"
2723 SLIBSUF=".so"
2724 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2725 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2726 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2727 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2728 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2729 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2730
2731 asflags_filter=echo
2732 cflags_filter=echo
2733 ldflags_filter=echo
2734
2735 AS_C='-c'
2736 AS_O='-o $@'
2737 CC_C='-c'
2738 CC_E='-E -o $@'
2739 CC_O='-o $@'
2740 CXX_C='-c'
2741 CXX_O='-o $@'
2742 LD_O='-o $@'
2743 LD_LIB='-l%'
2744 LD_PATH='-L'
2745 HOSTCC_C='-c'
2746 HOSTCC_E='-E -o $@'
2747 HOSTCC_O='-o $@'
2748 HOSTLD_O='-o $@'
2749
2750 host_libs='-lm'
2751 host_cflags_filter=echo
2752 host_ldflags_filter=echo
2753
2754 target_path='$(CURDIR)'
2755
2756 # since the object filename is not given with the -MM flag, the compiler
2757 # is only able to print the basename, and we must add the path ourselves
2758 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2759 DEPFLAGS='-MM'
2760
2761 # find source path
2762 if test -f configure; then
2763     source_path=.
2764 else
2765     source_path=$(cd $(dirname "$0"); pwd)
2766     echo "$source_path" | grep -q '[[:blank:]]' &&
2767         die "Out of tree builds are impossible with whitespace in source path."
2768     test -e "$source_path/config.h" &&
2769         die "Out of tree builds are impossible with config.h in source dir."
2770 fi
2771
2772 for v in "$@"; do
2773     r=${v#*=}
2774     l=${v%"$r"}
2775     r=$(sh_quote "$r")
2776     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2777 done
2778
2779 find_things(){
2780     thing=$1
2781     pattern=$2
2782     file=$source_path/$3
2783     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2784 }
2785
2786 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2787 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2788 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2789 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2790 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2791 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2792 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2793 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2794 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2795 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2796 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2797
2798 ALL_COMPONENTS="
2799     $BSF_LIST
2800     $DECODER_LIST
2801     $DEMUXER_LIST
2802     $ENCODER_LIST
2803     $FILTER_LIST
2804     $HWACCEL_LIST
2805     $INDEV_LIST
2806     $MUXER_LIST
2807     $OUTDEV_LIST
2808     $PARSER_LIST
2809     $PROTOCOL_LIST
2810 "
2811
2812 for n in $COMPONENT_LIST; do
2813     v=$(toupper ${n%s})_LIST
2814     eval enable \$$v
2815     eval ${n}_if_any="\$$v"
2816 done
2817
2818 enable $ARCH_EXT_LIST
2819
2820 die_unknown(){
2821     echo "Unknown option \"$1\"."
2822     echo "See $0 --help for available options."
2823     exit 1
2824 }
2825
2826 print_3_columns() {
2827     cat | tr ' ' '\n' | sort | pr -r -3 -t
2828 }
2829
2830 show_list() {
2831     suffix=_$1
2832     shift
2833     echo $* | sed s/$suffix//g | print_3_columns
2834     exit 0
2835 }
2836
2837 rand_list(){
2838     IFS=', '
2839     set -- $*
2840     unset IFS
2841     for thing; do
2842         comp=${thing%:*}
2843         prob=${thing#$comp}
2844         prob=${prob#:}
2845         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2846         echo "prob ${prob:-0.5}"
2847         printf '%s\n' $comp
2848     done
2849 }
2850
2851 do_random(){
2852     action=$1
2853     shift
2854     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2855     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2856 }
2857
2858 for opt do
2859     optval="${opt#*=}"
2860     case "$opt" in
2861         --extra-ldflags=*)
2862             add_ldflags $optval
2863         ;;
2864         --extra-ldexeflags=*)
2865             add_ldexeflags $optval
2866         ;;
2867         --extra-libs=*)
2868             add_extralibs $optval
2869         ;;
2870         --disable-devices)
2871             disable $INDEV_LIST $OUTDEV_LIST
2872         ;;
2873         --enable-debug=*)
2874             debuglevel="$optval"
2875         ;;
2876         --disable-programs)
2877             disable $PROGRAM_LIST
2878         ;;
2879         --disable-everything)
2880             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2881         ;;
2882         --disable-all)
2883             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2884             disable $LIBRARY_LIST $PROGRAM_LIST doc
2885         ;;
2886         --enable-random|--disable-random)
2887             action=${opt%%-random}
2888             do_random ${action#--} $COMPONENT_LIST
2889         ;;
2890         --enable-random=*|--disable-random=*)
2891             action=${opt%%-random=*}
2892             do_random ${action#--} $optval
2893         ;;
2894         --enable-*=*|--disable-*=*)
2895             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2896             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2897             eval list=\$$(toupper $thing)_LIST
2898             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2899             list=$(filter "$name" $list)
2900             [ "$list" = "" ] && warn "Option $opt did not match anything"
2901             $action $list
2902         ;;
2903         --enable-?*|--disable-?*)
2904             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2905             if is_in $option $COMPONENT_LIST; then
2906                 test $action = disable && action=unset
2907                 eval $action \$$(toupper ${option%s})_LIST
2908             elif is_in $option $CMDLINE_SELECT; then
2909                 $action $option
2910             else
2911                 die_unknown $opt
2912             fi
2913         ;;
2914         --list-*)
2915             NAME="${opt#--list-}"
2916             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2917             NAME=${NAME%s}
2918             eval show_list $NAME \$$(toupper $NAME)_LIST
2919         ;;
2920         --help|-h) show_help
2921         ;;
2922         --fatal-warnings) enable fatal_warnings
2923         ;;
2924         *)
2925             optname="${opt%%=*}"
2926             optname="${optname#--}"
2927             optname=$(echo "$optname" | sed 's/-/_/g')
2928             if is_in $optname $CMDLINE_SET; then
2929                 eval $optname='$optval'
2930             elif is_in $optname $CMDLINE_APPEND; then
2931                 append $optname "$optval"
2932             else
2933                 die_unknown $opt
2934             fi
2935         ;;
2936     esac
2937 done
2938
2939 disabled logging && logfile=/dev/null
2940
2941 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2942 set >> $logfile
2943
2944 test -n "$cross_prefix" && enable cross_compile
2945
2946 if enabled cross_compile; then
2947     test -n "$arch" && test -n "$target_os" ||
2948         die "Must specify target arch and OS when cross-compiling"
2949 fi
2950
2951 ar_default="${cross_prefix}${ar_default}"
2952 cc_default="${cross_prefix}${cc_default}"
2953 cxx_default="${cross_prefix}${cxx_default}"
2954 nm_default="${cross_prefix}${nm_default}"
2955 pkg_config_default="${cross_prefix}${pkg_config_default}"
2956 ranlib_default="${cross_prefix}${ranlib_default}"
2957 strip_default="${cross_prefix}${strip_default}"
2958 windres_default="${cross_prefix}${windres_default}"
2959
2960 sysinclude_default="${sysroot}/usr/include"
2961
2962 test -n "$valgrind" && toolchain="valgrind-memcheck"
2963
2964 case "$toolchain" in
2965     clang-asan)
2966         cc_default="clang"
2967         add_cflags  -fsanitize=address
2968         add_ldflags -fsanitize=address
2969     ;;
2970     clang-tsan)
2971         cc_default="clang"
2972         add_cflags  -fsanitize=thread -pie
2973         add_ldflags -fsanitize=thread -pie
2974     ;;
2975     clang-usan)
2976         cc_default="clang"
2977         add_cflags  -fsanitize=undefined
2978         add_ldflags -fsanitize=undefined
2979     ;;
2980     gcc-asan)
2981         cc_default="gcc"
2982         add_cflags  -fsanitize=address
2983         add_ldflags -fsanitize=address
2984     ;;
2985     gcc-tsan)
2986         cc_default="gcc"
2987         add_cflags  -fsanitize=thread -pie -fPIC
2988         add_ldflags -fsanitize=thread -pie -fPIC
2989     ;;
2990     gcc-usan)
2991         cc_default="gcc"
2992         add_cflags  -fsanitize=undefined
2993         add_ldflags -fsanitize=undefined
2994     ;;
2995     valgrind-massif)
2996         target_exec_default=${valgrind:-"valgrind"}
2997         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"
2998     ;;
2999     valgrind-memcheck)
3000         target_exec_default=${valgrind:-"valgrind"}
3001         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3002     ;;
3003     msvc)
3004         # Check whether the current MSVC version needs the C99 converter.
3005         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3006         # support enough of C99 to build ffmpeg. Default to the new
3007         # behaviour if the regexp was unable to match anything, since this
3008         # successfully parses the version number of existing supported
3009         # versions that require the converter (MSVC 2010 and 2012).
3010         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3011         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3012             cc_default="cl"
3013         else
3014             cc_default="c99wrap cl"
3015         fi
3016         ld_default="link"
3017         nm_default="dumpbin -symbols"
3018         ar_default="lib"
3019         target_os_default="win32"
3020         # Use a relative path for TMPDIR. This makes sure all the
3021         # ffconf temp files are written with a relative path, avoiding
3022         # issues with msys/win32 path conversion for MSVC parameters
3023         # such as -Fo<file> or -out:<file>.
3024         TMPDIR=.
3025     ;;
3026     icl)
3027         cc_default="icl"
3028         ld_default="xilink"
3029         nm_default="dumpbin -symbols"
3030         ar_default="xilib"
3031         target_os_default="win32"
3032         TMPDIR=.
3033     ;;
3034     gcov)
3035         add_cflags  -fprofile-arcs -ftest-coverage
3036         add_ldflags -fprofile-arcs -ftest-coverage
3037     ;;
3038     hardened)
3039         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3040         add_cflags   -fno-strict-overflow -fstack-protector-all
3041         add_ldflags  -Wl,-z,relro -Wl,-z,now
3042     ;;
3043     ?*)
3044         die "Unknown toolchain $toolchain"
3045     ;;
3046 esac
3047
3048 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3049     target_exec target_os yasmexe
3050 enabled cross_compile || host_cc_default=$cc
3051 set_default host_cc
3052
3053 if ! $pkg_config --version >/dev/null 2>&1; then
3054     warn "$pkg_config not found, library detection may fail."
3055     pkg_config=false
3056 fi
3057
3058 if test $doxygen != $doxygen_default && \
3059   ! $doxygen --version >/dev/null 2>&1; then
3060     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3061 fi
3062
3063 exesuf() {
3064     case $1 in
3065         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3066     esac
3067 }
3068
3069 EXESUF=$(exesuf $target_os)
3070 HOSTEXESUF=$(exesuf $host_os)
3071
3072 # set temporary file name
3073 : ${TMPDIR:=$TEMPDIR}
3074 : ${TMPDIR:=$TMP}
3075 : ${TMPDIR:=/tmp}
3076
3077 if [ -n "$tempprefix" ] ; then
3078     mktemp(){
3079         echo $tempprefix.${HOSTNAME}.${UID}
3080     }
3081 elif ! check_cmd mktemp -u XXXXXX; then
3082     # simple replacement for missing mktemp
3083     # NOT SAFE FOR GENERAL USE
3084     mktemp(){
3085         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3086     }
3087 fi
3088
3089 tmpfile(){
3090     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3091         (set -C; exec > $tmp) 2>/dev/null ||
3092         die "Unable to create temporary file in $TMPDIR."
3093     append TMPFILES $tmp
3094     eval $1=$tmp
3095 }
3096
3097 trap 'rm -f -- $TMPFILES' EXIT
3098
3099 tmpfile TMPASM .asm
3100 tmpfile TMPC   .c
3101 tmpfile TMPCPP .cpp
3102 tmpfile TMPE   $EXESUF
3103 tmpfile TMPH   .h
3104 tmpfile TMPM   .m
3105 tmpfile TMPO   .o
3106 tmpfile TMPS   .S
3107 tmpfile TMPSH  .sh
3108 tmpfile TMPV   .ver
3109
3110 unset -f mktemp
3111
3112 chmod +x $TMPE
3113
3114 # make sure we can execute files in $TMPDIR
3115 cat > $TMPSH 2>> $logfile <<EOF
3116 #! /bin/sh
3117 EOF
3118 chmod +x $TMPSH >> $logfile 2>&1
3119 if ! $TMPSH >> $logfile 2>&1; then
3120     cat <<EOF
3121 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3122 variable to another directory and make sure that it is not mounted noexec.
3123 EOF
3124     die "Sanity test failed."
3125 fi
3126
3127 armasm_flags(){
3128     for flag; do
3129         case $flag in
3130             # Filter out MSVC cl.exe options from cflags that shouldn't
3131             # be passed to gas-preprocessor
3132             -M[TD]*)                                            ;;
3133             *)                  echo $flag                      ;;
3134         esac
3135    done
3136 }
3137
3138 ccc_flags(){
3139     for flag; do
3140         case $flag in
3141             -std=c99)           echo -c99                       ;;
3142             -mcpu=*)            echo -arch ${flag#*=}           ;;
3143             -mieee)             echo -ieee                      ;;
3144             -O*|-fast)          echo $flag                      ;;
3145             -fno-math-errno)    echo -assume nomath_errno       ;;
3146             -g)                 echo -g3                        ;;
3147             -Wall)              echo -msg_enable level2         ;;
3148             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3149             -Wl,*)              echo $flag                      ;;
3150             -f*|-W*)                                            ;;
3151             *)                  echo $flag                      ;;
3152         esac
3153    done
3154 }
3155
3156 cparser_flags(){
3157     for flag; do
3158         case $flag in
3159             -Wno-switch)             echo -Wno-switch-enum ;;
3160             -Wno-format-zero-length) ;;
3161             -Wdisabled-optimization) ;;
3162             -Wno-pointer-sign)       echo -Wno-other ;;
3163             *)                       echo $flag ;;
3164         esac
3165     done
3166 }
3167
3168 msvc_common_flags(){
3169     for flag; do
3170         case $flag in
3171             # In addition to specifying certain flags under the compiler
3172             # specific filters, they must be specified here as well or else the
3173             # generic catch all at the bottom will print the original flag.
3174             -Wall)                ;;
3175             -std=c99)             ;;
3176             # Common flags
3177             -fomit-frame-pointer) ;;
3178             -g)                   echo -Z7 ;;
3179             -fno-math-errno)      ;;
3180             -fno-common)          ;;
3181             -fno-signed-zeros)    ;;
3182             -fPIC)                ;;
3183             -mthumb)              ;;
3184             -march=*)             ;;
3185             -lz)                  echo zlib.lib ;;
3186             -lavifil32)           echo vfw32.lib ;;
3187             -lavicap32)           echo vfw32.lib user32.lib ;;
3188             -l*)                  echo ${flag#-l}.lib ;;
3189             *)                    echo $flag ;;
3190         esac
3191     done
3192 }
3193
3194 msvc_flags(){
3195     msvc_common_flags "$@"
3196     for flag; do
3197         case $flag in
3198             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3199                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3200                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3201                                        -wd4554 \
3202                                        -wd4273 -wd4701 ;;
3203         esac
3204     done
3205 }
3206
3207 icl_flags(){
3208     msvc_common_flags "$@"
3209     for flag; do
3210         case $flag in
3211             # Despite what Intel's documentation says -Wall, which is supported
3212             # on Windows, does enable remarks so disable them here.
3213             -Wall)                echo $flag -Qdiag-disable:remark ;;
3214             -std=c99)             echo -Qstd=c99 ;;
3215             -flto)                echo -ipo ;;
3216         esac
3217     done
3218 }
3219
3220 icc_flags(){
3221     for flag; do
3222         case $flag in
3223             -flto)                echo -ipo ;;
3224             *)                    echo $flag ;;
3225         esac
3226     done
3227 }
3228
3229 pgi_flags(){
3230     for flag; do
3231         case $flag in
3232             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3233             -fomit-frame-pointer) echo -Mnoframe ;;
3234             -g)                   echo -gopt ;;
3235             *)                    echo $flag ;;
3236         esac
3237     done
3238 }
3239
3240 suncc_flags(){
3241     for flag; do
3242         case $flag in
3243             -march=*|-mcpu=*)
3244                 case "${flag#*=}" in
3245                     native)                   echo -xtarget=native       ;;
3246                     v9|niagara)               echo -xarch=sparc          ;;
3247                     ultrasparc)               echo -xarch=sparcvis       ;;
3248                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3249                     i586|pentium)             echo -xchip=pentium        ;;
3250                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3251                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3252                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3253                     pentium4*)          echo -xtarget=pentium4           ;;
3254                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3255                     *-sse3)             echo -xarch=sse3                 ;;
3256                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3257                     bonnell)                   echo -xarch=ssse3         ;;
3258                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3259                     westmere)                  echo -xtarget=westmere    ;;
3260                     silvermont)                echo -xarch=sse4_2        ;;
3261                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3262                     core-avx*|ivybridge|haswell|broadwell)
3263                                                echo -xarch=avx           ;;
3264                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3265                     btver1)                    echo -xarch=amdsse4a      ;;
3266                     btver2|bdver*)             echo -xarch=avx           ;;
3267                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3268                     k8|opteron|athlon64|athlon-fx)
3269                                                echo -xarch=sse2a         ;;
3270                     athlon*)                   echo -xarch=pentium_proa  ;;
3271                 esac
3272                 ;;
3273             -std=c99)             echo -xc99              ;;
3274             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3275             -fPIC)                echo -KPIC -xcode=pic32 ;;
3276             -W*,*)                echo $flag              ;;
3277             -f*-*|-W*|-mimpure-text)                      ;;
3278             -shared)              echo -G                 ;;
3279             *)                    echo $flag              ;;
3280         esac
3281     done
3282 }
3283
3284 tms470_flags(){
3285     for flag; do
3286         case $flag in
3287             -march=*|-mcpu=*)
3288                 case "${flag#*=}" in
3289                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3290                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3291                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3292                     armv6*|arm11*)          echo -mv=6   ;;
3293                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3294                                             echo -mv=5e  ;;
3295                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3296                 esac
3297                 ;;
3298             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3299             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3300             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3301             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3302             -msoft-float)   echo --float_support=vfplib       ;;
3303             -O[0-3]|-mf=*)  echo $flag                        ;;
3304             -g)             echo -g -mn                       ;;
3305             -pds=*)         echo $flag                        ;;
3306             -D*|-I*)        echo $flag                        ;;
3307             --gcc|--abi=*)  echo $flag                        ;;
3308             -me)            echo $flag                        ;;
3309         esac
3310     done
3311 }
3312
3313 probe_cc(){
3314     pfx=$1
3315     _cc=$2
3316
3317     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3318     unset _ld_o _ldflags _ld_lib _ld_path
3319     unset _depflags _DEPCMD _DEPFLAGS
3320     _flags_filter=echo
3321
3322     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3323         true # no-op to avoid reading stdin in following checks
3324     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3325         _type=llvm_gcc
3326         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3327         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3328         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3329         _cflags_speed='-O3'
3330         _cflags_size='-Os'
3331     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3332         _type=gcc
3333         gcc_version=$($_cc --version | head -n1)
3334         gcc_basever=$($_cc -dumpversion)
3335         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3336         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3337         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3338         if ! $_cc -dumpversion | grep -q '^2\.'; then
3339             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         fi
3341         _cflags_speed='-O3'
3342         _cflags_size='-Os'
3343     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3344         _type=icc
3345         _ident=$($_cc --version | head -n1)
3346         _depflags='-MMD'
3347         _cflags_speed='-O3'
3348         _cflags_size='-Os'
3349         _cflags_noopt='-O1'
3350         _flags_filter=icc_flags
3351     elif $_cc -v 2>&1 | grep -q xlc; then
3352         _type=xlc
3353         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3354         _cflags_speed='-O5'
3355         _cflags_size='-O5 -qcompact'
3356     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3357         _type=ccc
3358         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3359         _DEPFLAGS='-M'
3360         _cflags_speed='-fast'
3361         _cflags_size='-O1'
3362         _flags_filter=ccc_flags
3363     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3364         test -d "$sysroot" || die "No valid sysroot specified."
3365         _type=armcc
3366         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3367         armcc_conf="$PWD/armcc.conf"
3368         $_cc --arm_linux_configure                 \
3369              --arm_linux_config_file="$armcc_conf" \
3370              --configure_sysroot="$sysroot"        \
3371              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3372              die "Error creating armcc configuration file."
3373         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3374         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3375         as_default="${cross_prefix}gcc"
3376         _depflags='-MMD'
3377         _cflags_speed='-O3'
3378         _cflags_size='-Os'
3379     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3380         _type=tms470
3381         _ident=$($_cc -version | head -n1 | tr -s ' ')
3382         _flags='--gcc --abi=eabi -me'
3383         _cc_e='-ppl -fe=$@'
3384         _cc_o='-fe=$@'
3385         _depflags='-ppa -ppd=$(@:.o=.d)'
3386         _cflags_speed='-O3 -mf=5'
3387         _cflags_size='-O3 -mf=2'
3388         _flags_filter=tms470_flags
3389     elif $_cc -v 2>&1 | grep -q clang; then
3390         _type=clang
3391         _ident=$($_cc --version | head -n1)
3392         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3393         _cflags_speed='-O3'
3394         _cflags_size='-Os'
3395     elif $_cc -V 2>&1 | grep -q Sun; then
3396         _type=suncc
3397         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3398         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3399         _DEPFLAGS='-xM1 -xc99'
3400         _ldflags='-std=c99'
3401         _cflags_speed='-O5'
3402         _cflags_size='-O5 -xspace'
3403         _flags_filter=suncc_flags
3404     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3405         _type=pathscale
3406         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3407         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3408         _cflags_speed='-O2'
3409         _cflags_size='-Os'
3410         _flags_filter='filter_out -Wdisabled-optimization'
3411     elif $_cc -v 2>&1 | grep -q Open64; then
3412         _type=open64
3413         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3414         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3415         _cflags_speed='-O2'
3416         _cflags_size='-Os'
3417         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3418     elif $_cc -V 2>&1 | grep -q Portland; then
3419         _type=pgi
3420         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3421         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3422         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3423         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3424         _cflags_noopt="-O"
3425         _flags_filter=pgi_flags
3426     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3427         _type=armasm
3428         _ident=$($_cc | head -n1)
3429         # 4509: "This form of conditional instruction is deprecated"
3430         _flags="-nologo -ignore 4509"
3431         _flags_filter=armasm_flags
3432     elif $_cc 2>&1 | grep -q Microsoft; then
3433         _type=msvc
3434         _ident=$($cc 2>&1 | head -n1)
3435         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3436         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3437         _cflags_speed="-O2"
3438         _cflags_size="-O1"
3439         if $_cc 2>&1 | grep -q Linker; then
3440             _ld_o='-out:$@'
3441         else
3442             _ld_o='-Fe$@'
3443         fi
3444         _cc_o='-Fo$@'
3445         _cc_e='-P -Fi$@'
3446         _flags_filter=msvc_flags
3447         _ld_lib='lib%.a'
3448         _ld_path='-libpath:'
3449         _flags='-nologo'
3450         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3451         if [ $pfx = hostcc ]; then
3452             append _cflags -Dsnprintf=_snprintf
3453         fi
3454         disable stripping
3455     elif $_cc 2>&1 | grep -q Intel; then
3456         _type=icl
3457         _ident=$($cc 2>&1 | head -n1)
3458         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3459         # Not only is O3 broken on 13.x+ but it is slower on all previous
3460         # versions (tested) as well.
3461         _cflags_speed="-O2"
3462         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3463         if $_cc 2>&1 | grep -q Linker; then
3464             _ld_o='-out:$@'
3465         else
3466             _ld_o='-Fe$@'
3467         fi
3468         _cc_o='-Fo$@'
3469         _cc_e='-P'
3470         _flags_filter=icl_flags
3471         _ld_lib='lib%.a'
3472         _ld_path='-libpath:'
3473         # -Qdiag-error to make icl error when seeing certain unknown arguments
3474         _flags='-nologo -Qdiag-error:4044,10157'
3475         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3476         # with MSVC which enables it by default.
3477         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3478         if [ $pfx = hostcc ]; then
3479             append _cflags -Dsnprintf=_snprintf
3480         fi
3481     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3482         _type=cparser
3483         _ident=$($_cc --version | head -n1)
3484         _depflags='-MMD'
3485         _cflags_speed='-O4'
3486         _cflags_size='-O2'
3487         _flags_filter=cparser_flags
3488     fi
3489
3490     eval ${pfx}_type=\$_type
3491     eval ${pfx}_ident=\$_ident
3492 }
3493
3494 set_ccvars(){
3495     eval ${1}_C=\${_cc_c-\${${1}_C}}
3496     eval ${1}_E=\${_cc_e-\${${1}_E}}
3497     eval ${1}_O=\${_cc_o-\${${1}_O}}
3498
3499     if [ -n "$_depflags" ]; then
3500         eval ${1}_DEPFLAGS=\$_depflags
3501     else
3502         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3503         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3504         eval DEP${1}FLAGS=\$_flags
3505     fi
3506 }
3507
3508 probe_cc cc "$cc"
3509 cflags_filter=$_flags_filter
3510 cflags_speed=$_cflags_speed
3511 cflags_size=$_cflags_size
3512 cflags_noopt=$_cflags_noopt
3513 add_cflags $_flags $_cflags
3514 cc_ldflags=$_ldflags
3515 set_ccvars CC
3516
3517 probe_cc hostcc "$host_cc"
3518 host_cflags_filter=$_flags_filter
3519 add_host_cflags  $_flags $_cflags
3520 set_ccvars HOSTCC
3521
3522 test -n "$cc_type" && enable $cc_type ||
3523     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3524
3525 : ${as_default:=$cc}
3526 : ${dep_cc_default:=$cc}
3527 : ${ld_default:=$cc}
3528 : ${host_ld_default:=$host_cc}
3529 set_default ar as dep_cc ld host_ld windres
3530
3531 probe_cc as "$as"
3532 asflags_filter=$_flags_filter
3533 add_asflags $_flags $_cflags
3534 set_ccvars AS
3535
3536 probe_cc ld "$ld"
3537 ldflags_filter=$_flags_filter
3538 add_ldflags $_flags $_ldflags
3539 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3540 LD_O=${_ld_o-$LD_O}
3541 LD_LIB=${_ld_lib-$LD_LIB}
3542 LD_PATH=${_ld_path-$LD_PATH}
3543
3544 probe_cc hostld "$host_ld"
3545 host_ldflags_filter=$_flags_filter
3546 add_host_ldflags $_flags $_ldflags
3547 HOSTLD_O=${_ld_o-$HOSTLD_O}
3548
3549 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3550     probe_cc depcc "$dep_cc"
3551     CCDEP=${_DEPCMD:-$DEPCMD}
3552     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3553     DEPCCFLAGS=$_flags
3554 fi
3555
3556 if $ar 2>&1 | grep -q Microsoft; then
3557     arflags="-nologo"
3558     ar_o='-out:$@'
3559 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3560     arflags="rq"
3561     ar_o='$@'
3562 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3563     arflags='-Xany -r -c'
3564     ar_o='$@'
3565 else
3566     arflags="rc"
3567     ar_o='$@'
3568 fi
3569
3570 add_cflags $extra_cflags
3571 add_cxxflags $extra_cxxflags
3572 add_asflags $extra_cflags
3573
3574 if test -n "$sysroot"; then
3575     case "$cc_type" in
3576         gcc|llvm_gcc|clang)
3577             add_cppflags --sysroot="$sysroot"
3578             add_ldflags --sysroot="$sysroot"
3579 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3580             add_cppflags -isysroot "$sysroot"
3581             add_ldflags -isysroot "$sysroot"
3582         ;;
3583         tms470)
3584             add_cppflags -I"$sysinclude"
3585             add_ldflags  --sysroot="$sysroot"
3586         ;;
3587     esac
3588 fi
3589
3590 if test "$cpu" = host; then
3591     enabled cross_compile &&
3592         die "--cpu=host makes no sense when cross-compiling."
3593
3594     case "$cc_type" in
3595         gcc|llvm_gcc)
3596             check_native(){
3597                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3598                 sed -n "/cc1.*$1=/{
3599                             s/.*$1=\\([^ ]*\\).*/\\1/
3600                             p
3601                             q
3602                         }" $TMPE
3603             }
3604             cpu=$(check_native -march || check_native -mcpu)
3605         ;;
3606     esac
3607
3608     test "${cpu:-host}" = host &&
3609         die "--cpu=host not supported with compiler $cc"
3610 fi
3611
3612 # Deal with common $arch aliases
3613 case "$arch" in
3614     aarch64|arm64)
3615         arch="aarch64"
3616     ;;
3617     arm*|iPad*|iPhone*)
3618         arch="arm"
3619     ;;
3620     mips*|IP*)
3621         arch="mips"
3622     ;;
3623     parisc*|hppa*)
3624         arch="parisc"
3625     ;;
3626     "Power Macintosh"|ppc*|powerpc*)
3627         arch="ppc"
3628     ;;
3629     s390|s390x)
3630         arch="s390"
3631     ;;
3632     sh4|sh)
3633         arch="sh4"
3634     ;;
3635     sun4u|sparc*)
3636         arch="sparc"
3637     ;;
3638     tilegx|tile-gx)
3639         arch="tilegx"
3640     ;;
3641     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3642         arch="x86"
3643     ;;
3644 esac
3645
3646 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3647 enable $arch
3648
3649 # Add processor-specific flags
3650 if enabled aarch64; then
3651
3652     case $cpu in
3653         armv*)
3654             cpuflags="-march=$cpu"
3655         ;;
3656         *)
3657             cpuflags="-mcpu=$cpu"
3658         ;;
3659     esac
3660
3661 elif enabled alpha; then
3662
3663     cpuflags="-mcpu=$cpu"
3664
3665 elif enabled arm; then
3666
3667     check_arm_arch() {
3668         check_cpp_condition stddef.h \
3669             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3670             $cpuflags
3671     }
3672
3673     probe_arm_arch() {
3674         if   check_arm_arch 4;        then echo armv4;
3675         elif check_arm_arch 4T;       then echo armv4t;
3676         elif check_arm_arch 5;        then echo armv5;
3677         elif check_arm_arch 5E;       then echo armv5e;
3678         elif check_arm_arch 5T;       then echo armv5t;
3679         elif check_arm_arch 5TE;      then echo armv5te;
3680         elif check_arm_arch 5TEJ;     then echo armv5te;
3681         elif check_arm_arch 6;        then echo armv6;
3682         elif check_arm_arch 6J;       then echo armv6j;
3683         elif check_arm_arch 6K;       then echo armv6k;
3684         elif check_arm_arch 6Z;       then echo armv6z;
3685         elif check_arm_arch 6ZK;      then echo armv6zk;
3686         elif check_arm_arch 6T2;      then echo armv6t2;
3687         elif check_arm_arch 7;        then echo armv7;
3688         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3689         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3690         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3691         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3692         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3693         fi
3694     }
3695
3696     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3697
3698     case $cpu in
3699         armv*)
3700             cpuflags="-march=$cpu"
3701             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3702         ;;
3703         *)
3704             cpuflags="-mcpu=$cpu"
3705             case $cpu in
3706                 cortex-a*)                               subarch=armv7a  ;;
3707                 cortex-r*)                               subarch=armv7r  ;;
3708                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3709                 arm11*)                                  subarch=armv6   ;;
3710                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3711                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3712                 *)                             subarch=$(probe_arm_arch) ;;
3713             esac
3714         ;;
3715     esac
3716
3717     case "$subarch" in
3718         armv5t*)    enable fast_clz                ;;
3719         armv[6-8]*)
3720             enable fast_clz
3721             disabled fast_unaligned || enable fast_unaligned
3722             ;;
3723     esac
3724
3725 elif enabled avr32; then
3726
3727     case $cpu in
3728         ap7[02]0[0-2])
3729             subarch="avr32_ap"
3730             cpuflags="-mpart=$cpu"
3731         ;;
3732         ap)
3733             subarch="avr32_ap"
3734             cpuflags="-march=$cpu"
3735         ;;
3736         uc3[ab]*)
3737             subarch="avr32_uc"
3738             cpuflags="-mcpu=$cpu"
3739         ;;
3740         uc)
3741             subarch="avr32_uc"
3742             cpuflags="-march=$cpu"
3743         ;;
3744     esac
3745
3746 elif enabled bfin; then
3747
3748     cpuflags="-mcpu=$cpu"
3749
3750 elif enabled mips; then
3751
3752     cpuflags="-march=$cpu"
3753
3754     case $cpu in
3755         24kc)
3756             disable mipsfpu
3757             disable mipsdspr1
3758             disable mipsdspr2
3759         ;;
3760         24kf*)
3761             disable mipsdspr1
3762             disable mipsdspr2
3763         ;;
3764         24kec|34kc|1004kc)
3765             disable mipsfpu
3766             disable mipsdspr2
3767         ;;
3768         24kef*|34kf*|1004kf*)
3769             disable mipsdspr2
3770         ;;
3771         74kc)
3772             disable mipsfpu
3773         ;;
3774     esac
3775
3776 elif enabled ppc; then
3777
3778     disable ldbrx
3779     disable vsx
3780
3781     case $(tolower $cpu) in
3782         601|ppc601|powerpc601)
3783             cpuflags="-mcpu=601"
3784             disable altivec
3785         ;;
3786         603*|ppc603*|powerpc603*)
3787             cpuflags="-mcpu=603"
3788             disable altivec
3789         ;;
3790         604*|ppc604*|powerpc604*)
3791             cpuflags="-mcpu=604"
3792             disable altivec
3793         ;;
3794         g3|75*|ppc75*|powerpc75*)
3795             cpuflags="-mcpu=750"
3796             disable altivec
3797         ;;
3798         g4|745*|ppc745*|powerpc745*)
3799             cpuflags="-mcpu=7450"
3800         ;;
3801         74*|ppc74*|powerpc74*)
3802             cpuflags="-mcpu=7400"
3803         ;;
3804         g5|970|ppc970|powerpc970)
3805             cpuflags="-mcpu=970"
3806         ;;
3807         power[3-8]*)
3808             cpuflags="-mcpu=$cpu"
3809         ;;
3810         cell)
3811             cpuflags="-mcpu=cell"
3812             enable ldbrx
3813         ;;
3814         e500mc)
3815             cpuflags="-mcpu=e500mc"
3816             disable altivec
3817         ;;
3818         e500v2)
3819             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3820             disable altivec
3821             disable dcbzl
3822         ;;
3823         e500)
3824             cpuflags="-mcpu=8540 -mhard-float"
3825             disable altivec
3826             disable dcbzl
3827         ;;
3828     esac
3829
3830 elif enabled sparc; then
3831
3832     case $cpu in
3833         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3834             cpuflags="-mcpu=$cpu"
3835         ;;
3836         ultrasparc*|niagara[234])
3837             cpuflags="-mcpu=$cpu"
3838         ;;
3839     esac
3840
3841 elif enabled x86; then
3842
3843     case $cpu in
3844         i[345]86|pentium)
3845             cpuflags="-march=$cpu"
3846             disable i686
3847             disable mmx
3848         ;;
3849         # targets that do NOT support nopl and conditional mov (cmov)
3850         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3851             cpuflags="-march=$cpu"
3852             disable i686
3853         ;;
3854         # targets that do support nopl and conditional mov (cmov)
3855         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3856         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3857             cpuflags="-march=$cpu"
3858             enable i686
3859             enable fast_cmov
3860         ;;
3861         # targets that do support conditional mov but on which it's slow
3862         pentium4|pentium4m|prescott|nocona)
3863             cpuflags="-march=$cpu"
3864             enable i686
3865             disable fast_cmov
3866         ;;
3867     esac
3868
3869 fi
3870
3871 if [ "$cpu" != generic ]; then
3872     add_cflags  $cpuflags
3873     add_asflags $cpuflags
3874 fi
3875
3876 # compiler sanity check
3877 check_exec <<EOF
3878 int main(void){ return 0; }
3879 EOF
3880 if test "$?" != 0; then
3881     echo "$cc is unable to create an executable file."
3882     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3883         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3884         echo "Only do this if you know what cross compiling means."
3885     fi
3886     die "C compiler test failed."
3887 fi
3888
3889 add_cppflags -D_ISOC99_SOURCE
3890 add_cxxflags -D__STDC_CONSTANT_MACROS
3891 check_cflags -std=c99
3892 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3893 #include <stdlib.h>
3894 EOF
3895 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3896 #include <stdlib.h>
3897 EOF
3898
3899 add_host_cppflags -D_ISOC99_SOURCE
3900 check_host_cflags -std=c99
3901 check_host_cflags -Wall
3902 check_host_cflags -O3
3903
3904 check_64bit(){
3905     arch32=$1
3906     arch64=$2
3907     expr=$3
3908     check_code cc "" "int test[2*($expr) - 1]" &&
3909         subarch=$arch64 || subarch=$arch32
3910 }
3911
3912 case "$arch" in
3913     aarch64|alpha|ia64)
3914         spic=$shared
3915     ;;
3916     mips)
3917         check_64bit mips mips64 '_MIPS_SIM > 1'
3918         spic=$shared
3919     ;;
3920     parisc)
3921         check_64bit parisc parisc64 'sizeof(void *) > 4'
3922         spic=$shared
3923     ;;
3924     ppc)
3925         check_64bit ppc ppc64 'sizeof(void *) > 4'
3926         spic=$shared
3927     ;;
3928     s390)
3929         check_64bit s390 s390x 'sizeof(void *) > 4'
3930         spic=$shared
3931     ;;
3932     sparc)
3933         check_64bit sparc sparc64 'sizeof(void *) > 4'
3934         spic=$shared
3935     ;;
3936     x86)
3937         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3938         if test "$subarch" = "x86_64"; then
3939             spic=$shared
3940         fi
3941     ;;
3942     ppc)
3943         check_cc <<EOF && subarch="ppc64"
3944         int test[(int)sizeof(char*) - 7];
3945 EOF
3946     ;;
3947 esac
3948
3949 enable $subarch
3950 enabled spic && enable_weak pic
3951
3952 # OS specific
3953 case $target_os in
3954     aix)
3955         SHFLAGS=-shared
3956         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3957         enabled shared && add_ldflags -Wl,-brtl
3958         ;;
3959     android)
3960         disable symver
3961         SLIB_INSTALL_NAME='$(SLIBNAME)'
3962         SLIB_INSTALL_LINKS=
3963         # soname not set on purpose
3964         SHFLAGS=-shared
3965         ;;
3966     haiku)
3967         prefix_default="/boot/common"
3968         network_extralibs="-lnetwork"
3969         host_libs=
3970         ;;
3971     sunos)
3972         SHFLAGS='-shared -Wl,-h,$$(@F)'
3973         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3974         network_extralibs="-lsocket -lnsl"
3975         # When using suncc to build, the Solaris linker will mark
3976         # an executable with each instruction set encountered by
3977         # the Solaris assembler.  As our libraries contain their own
3978         # guards for processor-specific code, instead suppress
3979         # generation of the HWCAPS ELF section on Solaris x86 only.
3980         enabled_all suncc x86 &&
3981             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3982             add_ldflags -Wl,-M,mapfile
3983         nm_default='nm -P -g'
3984         ;;
3985     netbsd)
3986         disable symver
3987         oss_indev_extralibs="-lossaudio"
3988         oss_outdev_extralibs="-lossaudio"
3989         enabled gcc || check_ldflags -Wl,-zmuldefs
3990         ;;
3991     openbsd|bitrig)
3992         disable symver
3993         SHFLAGS='-shared'
3994         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3995         SLIB_INSTALL_LINKS=
3996         oss_indev_extralibs="-lossaudio"
3997         oss_outdev_extralibs="-lossaudio"
3998         ;;
3999     dragonfly)
4000         disable symver
4001         ;;
4002     freebsd)
4003         ;;
4004     bsd/os)
4005         add_extralibs -lpoll -lgnugetopt
4006         strip="strip -d"
4007         ;;
4008     darwin)
4009         enabled ppc && add_asflags -force_cpusubtype_ALL
4010         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4011         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4012         strip="${strip} -x"
4013         add_ldflags -Wl,-dynamic,-search_paths_first
4014         SLIBSUF=".dylib"
4015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4017         objformat="macho"
4018         enabled x86_64 && objformat="macho64"
4019         enabled_any pic shared ||
4020             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4021         ;;
4022     mingw32*)
4023         if test $target_os = "mingw32ce"; then
4024             disable network
4025         else
4026             target_os=mingw32
4027         fi
4028         LIBTARGET=i386
4029         if enabled x86_64; then
4030             LIBTARGET="i386:x86-64"
4031         elif enabled arm; then
4032             LIBTARGET=arm-wince
4033         fi
4034         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4035         check_ldflags -Wl,--nxcompat
4036         check_ldflags -Wl,--dynamicbase
4037         shlibdir_default="$bindir_default"
4038         SLIBPREF=""
4039         SLIBSUF=".dll"
4040         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4041         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4042         dlltool="${cross_prefix}dlltool"
4043         if check_cmd lib.exe -list; then
4044             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4045             if enabled x86_64; then
4046                 LIBTARGET=x64
4047             fi
4048         elif check_cmd $dlltool --version; then
4049             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4050         fi
4051         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4052         SLIB_INSTALL_LINKS=
4053         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4054         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4055         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4056         objformat="win32"
4057         ranlib=:
4058         enable dos_paths
4059         ;;
4060     win32|win64)
4061         disable symver
4062         if enabled shared; then
4063             # Link to the import library instead of the normal static library
4064             # for shared libs.
4065             LD_LIB='%.lib'
4066             # Cannot build both shared and static libs with MSVC or icl.
4067             disable static
4068         fi
4069         shlibdir_default="$bindir_default"
4070         SLIBPREF=""
4071         SLIBSUF=".dll"
4072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4074         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4075         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4076         SLIB_INSTALL_LINKS=
4077         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4078         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4079         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4080         objformat="win32"
4081         ranlib=:
4082         enable dos_paths
4083         ;;
4084     cygwin*)
4085         target_os=cygwin
4086         shlibdir_default="$bindir_default"
4087         SLIBPREF="cyg"
4088         SLIBSUF=".dll"
4089         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4090         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4091         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4092         SLIB_INSTALL_LINKS=
4093         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4094         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4095         objformat="win32"
4096         enable dos_paths
4097         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4098         ;;
4099     *-dos|freedos|opendos)
4100         network_extralibs="-lsocket"
4101         objformat="coff"
4102         enable dos_paths
4103         add_cppflags -U__STRICT_ANSI__
4104         ;;
4105     linux)
4106         enable dv1394
4107         ;;
4108     irix*)
4109         target_os=irix
4110         ranlib="echo ignoring ranlib"
4111         ;;
4112     os/2*)
4113         strip="lxlite -CS"
4114         ln_s="cp -f"
4115         objformat="aout"
4116         add_cppflags -D_GNU_SOURCE
4117         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4118         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4119         LIBSUF="_s.a"
4120         SLIBPREF=""
4121         SLIBSUF=".dll"
4122         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4123         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4124         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4125             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4126             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4127             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4128             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4129             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4130         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4131             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4132         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4133         enable dos_paths
4134         enable_weak os2threads
4135         ;;
4136     gnu/kfreebsd)
4137         add_cppflags -D_BSD_SOURCE
4138         ;;
4139     gnu)
4140         ;;
4141     qnx)
4142         add_cppflags -D_QNX_SOURCE
4143         network_extralibs="-lsocket"
4144         ;;
4145     symbian)
4146         SLIBSUF=".dll"
4147         enable dos_paths
4148         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4149         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4150         add_ldflags -Wl,--target1-abs,--no-undefined \
4151                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4152                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4153         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4154                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4155                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4156         ;;
4157     osf1)
4158         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4159         ;;
4160     minix)
4161         ;;
4162     plan9)
4163         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4164                      -D_REENTRANT_SOURCE        \
4165                      -D_RESEARCH_SOURCE         \
4166                      -DFD_SETSIZE=96            \
4167                      -DHAVE_SOCK_OPTS
4168         add_compat strtod.o strtod=avpriv_strtod
4169         network_extralibs='-lbsd'
4170         exeobjs=compat/plan9/main.o
4171         disable ffserver
4172         cp_f='cp'
4173         ;;
4174     none)
4175         ;;
4176     *)
4177         die "Unknown OS '$target_os'."
4178         ;;
4179 esac
4180
4181 # determine libc flavour
4182
4183 probe_libc(){
4184     pfx=$1
4185     pfx_no_=${pfx%_}
4186     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4187     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4188         eval ${pfx}libc_type=uclibc
4189         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4190     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4191         eval ${pfx}libc_type=glibc
4192         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4193     # MinGW headers can be installed on Cygwin, so check for newlib first.
4194     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4195         eval ${pfx}libc_type=newlib
4196         add_${pfx}cppflags -U__STRICT_ANSI__
4197     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4198     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4199         eval ${pfx}libc_type=mingw64
4200         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4201             add_compat msvcrt/snprintf.o
4202             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4203         fi
4204         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4205         eval test \$${pfx_no_}cc_type = "gcc" &&
4206             add_${pfx}cppflags -D__printf__=__gnu_printf__
4207     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4208          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4209         eval ${pfx}libc_type=mingw32
4210         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4211             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4212             die "ERROR: MinGW32 runtime version must be >= 3.15."
4213         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4214         eval test \$${pfx_no_}cc_type = "gcc" &&
4215             add_${pfx}cppflags -D__printf__=__gnu_printf__
4216     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4217         eval ${pfx}libc_type=msvcrt
4218         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4219         # 0x601 by default unless something else is set by the user.
4220         # This can easily lead to us detecting functions only present
4221         # in such new versions and producing binaries requiring windows 7.0.
4222         # Therefore explicitly set the default to XP unless the user has
4223         # set something else on the command line.
4224         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4225             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4226     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4227         eval ${pfx}libc_type=klibc
4228     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4229         eval ${pfx}libc_type=bionic
4230     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4231         eval ${pfx}libc_type=solaris
4232         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4233     fi
4234 }
4235
4236 probe_libc
4237 test -n "$libc_type" && enable libc_$libc_type
4238 probe_libc host_
4239 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4240
4241 case $libc_type in
4242     bionic)
4243         add_compat strtod.o strtod=avpriv_strtod
4244         ;;
4245     msvcrt)
4246         add_compat strtod.o strtod=avpriv_strtod
4247         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4248                                      _snprintf=avpriv_snprintf  \
4249                                      vsnprintf=avpriv_vsnprintf
4250         ;;
4251 esac
4252
4253 # hacks for compiler/libc/os combinations
4254
4255 if enabled_all tms470 libc_glibc; then
4256     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4257     add_cppflags -D__USER_LABEL_PREFIX__=
4258     add_cppflags -D__builtin_memset=memset
4259     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4260     add_cflags   -pds=48    # incompatible redefinition of macro
4261 fi
4262
4263 if enabled_all ccc libc_glibc; then
4264     add_ldflags -Wl,-z,now  # calls to libots crash without this
4265 fi
4266
4267 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4268     add_cppflags '-I\$(SRC_PATH)/compat/float'
4269
4270 esc(){
4271     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4272 }
4273
4274 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4275
4276 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4277
4278 set_default $PATHS_LIST
4279 set_default nm
4280
4281 # we need to build at least one lib type
4282 if ! enabled_any static shared; then
4283     cat <<EOF
4284 At least one library type must be built.
4285 Specify --enable-static to build the static libraries or --enable-shared to
4286 build the shared libraries as well. To only build the shared libraries specify
4287 --disable-static in addition to --enable-shared.
4288 EOF
4289     exit 1;
4290 fi
4291
4292 die_license_disabled() {
4293     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4294 }
4295
4296 die_license_disabled_gpl() {
4297     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4298 }
4299
4300 die_license_disabled gpl frei0r
4301 die_license_disabled gpl libcdio
4302 die_license_disabled gpl libsmbclient
4303 die_license_disabled gpl libutvideo
4304 die_license_disabled gpl libvidstab
4305 die_license_disabled gpl libx264
4306 die_license_disabled gpl libx265
4307 die_license_disabled gpl libxavs
4308 die_license_disabled gpl libxvid
4309 die_license_disabled gpl libzvbi
4310 die_license_disabled gpl x11grab
4311
4312 die_license_disabled nonfree libaacplus
4313 die_license_disabled nonfree libfaac
4314 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4315 enabled gpl && die_license_disabled_gpl nonfree openssl
4316
4317 die_license_disabled version3 libopencore_amrnb
4318 die_license_disabled version3 libopencore_amrwb
4319 die_license_disabled version3 libsmbclient
4320 die_license_disabled version3 libvo_aacenc
4321 die_license_disabled version3 libvo_amrwbenc
4322
4323 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4324
4325 disabled optimizations || check_cflags -fomit-frame-pointer
4326
4327 enable_weak_pic() {
4328     disabled pic && return
4329     enable pic
4330     add_cppflags -DPIC
4331     case "$target_os" in
4332     mingw*|cygwin*)
4333         ;;
4334     *)
4335         add_cflags -fPIC
4336         ;;
4337     esac
4338     add_asflags  -fPIC
4339 }
4340
4341 enabled pic && enable_weak_pic
4342
4343 check_cc <<EOF || die "Symbol mangling check failed."
4344 int ff_extern;
4345 EOF
4346 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4347 extern_prefix=${sym%%ff_extern*}
4348
4349 check_cc <<EOF && enable_weak inline_asm
4350 void foo(void) { __asm__ volatile ("" ::); }
4351 EOF
4352
4353 _restrict=
4354 for restrict_keyword in restrict __restrict__ __restrict; do
4355     check_cc <<EOF && _restrict=$restrict_keyword && break
4356 void foo(char * $restrict_keyword p);
4357 EOF
4358 done
4359
4360 check_cc <<EOF && enable pragma_deprecated
4361 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4362 EOF
4363
4364 check_cc <<EOF && enable attribute_packed
4365 struct { int x; } __attribute__((packed)) x;
4366 EOF
4367
4368 check_cc <<EOF && enable attribute_may_alias
4369 union { int x; } __attribute__((may_alias)) x;
4370 EOF
4371
4372 check_cc <<EOF || die "endian test failed"
4373 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4374 EOF
4375 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4376
4377 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4378     if ! enabled bigendian ;then
4379         enable vsx
4380     fi
4381 fi
4382
4383 check_gas() {
4384     log "check_gas using '$as' as AS"
4385     # :vararg is used on aarch64, arm and ppc altivec
4386     check_as <<EOF || return 1
4387 .macro m n, y:vararg=0
4388 \n: .int \y
4389 .endm
4390 m x
4391 EOF
4392     # .altmacro is only used in arm asm
4393     ! enabled arm || check_as <<EOF || return 1
4394 .altmacro
4395 EOF
4396     enable gnu_as
4397     return 0
4398 }
4399
4400 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4401     nogas=:
4402     enabled_any arm aarch64 && nogas=die
4403     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4404     as_noop=-v
4405
4406     case $as_type in
4407         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4408         gcc)  gaspp_as_type=gas ;;
4409         *)    gaspp_as_type=$as_type ;;
4410     esac
4411
4412     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4413
4414     test "${as#*gas-preprocessor.pl}" != "$as" ||
4415     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4416         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4417
4418     if ! check_gas ; then
4419         as=${gas:=$as}
4420         check_gas || \
4421             $nogas "GNU assembler not found, install/update gas-preprocessor"
4422     fi
4423
4424     check_as <<EOF && enable as_func
4425 .func test
4426 .endfunc
4427 EOF
4428 fi
4429
4430 check_inline_asm inline_asm_labels '"1:\n"'
4431
4432 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4433
4434 if enabled aarch64; then
4435     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4436     # internal assembler in clang 3.3 does not support this instruction
4437     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4438     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4439
4440     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4441
4442 elif enabled alpha; then
4443
4444     check_cflags -mieee
4445
4446 elif enabled arm; then
4447
4448     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4449 float func(float a, float b){ return a+b; }
4450 EOF
4451
4452     enabled thumb && check_cflags -mthumb || check_cflags -marm
4453
4454     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4455         enable vfp_args
4456     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4457         case "${cross_prefix:-$cc}" in
4458             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4459             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4460 __asm__ (".eabi_attribute 28, 1");
4461 int main(void) { return 0; }
4462 EOF
4463         esac
4464         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4465     fi
4466
4467     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4468     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4469     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4470     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4471     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4472     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4473     enabled setend  && check_insn setend  'setend be'
4474
4475     [ $target_os = linux ] || [ $target_os = android ] ||
4476         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4477             $ARCH_EXT_LIST_ARM
4478
4479     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4480
4481     check_as <<EOF && enable as_dn_directive
4482 ra .dn d0.i16
4483 .unreq ra
4484 EOF
4485
4486     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4487
4488 elif enabled mips; then
4489
4490     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4491     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4492      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4493     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4494      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4495     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4496      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4497     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4498      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4499
4500 elif enabled parisc; then
4501
4502     if enabled gcc; then
4503         case $($cc -dumpversion) in
4504             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4505         esac
4506     fi
4507
4508 elif enabled ppc; then
4509
4510     enable local_aligned_8 local_aligned_16 local_aligned_32
4511
4512     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4513     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4514     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4515     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4516
4517     # AltiVec flags: The FSF version of GCC differs from the Apple version
4518     if enabled altivec; then
4519         check_cflags -maltivec -mabi=altivec &&
4520         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4521         check_cflags -faltivec
4522
4523         # check if our compiler supports Motorola AltiVec C API
4524         check_cc <<EOF || disable altivec
4525 $inc_altivec_h
4526 int main(void) {
4527     vector signed int v1 = (vector signed int) { 0 };
4528     vector signed int v2 = (vector signed int) { 1 };
4529     v1 = vec_add(v1, v2);
4530     return 0;
4531 }
4532 EOF
4533
4534         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4535     fi
4536
4537     if enabled vsx; then
4538         check_cflags -mvsx
4539     fi
4540 elif enabled x86; then
4541
4542     check_builtin rdtsc    intrin.h   "__rdtsc()"
4543     check_builtin mm_empty mmintrin.h "_mm_empty()"
4544
4545     enable local_aligned_8 local_aligned_16 local_aligned_32
4546
4547     # check whether EBP is available on x86
4548     # As 'i' is stored on the stack, this program will crash
4549     # if the base pointer is used to access it because the
4550     # base pointer is cleared in the inline assembly code.
4551     check_exec_crash <<EOF && enable ebp_available
4552 volatile int i=0;
4553 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4554 return i;
4555 EOF
4556
4557     # check whether EBX is available on x86
4558     check_inline_asm ebx_available '""::"b"(0)' &&
4559         check_inline_asm ebx_available '"":::"%ebx"'
4560
4561     # check whether xmm clobbers are supported
4562     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4563
4564     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4565         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4566
4567     # check whether binutils is new enough to compile SSSE3/MMXEXT
4568     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4569     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4570
4571     if ! disabled_any asm mmx yasm; then
4572         if check_cmd $yasmexe --version; then
4573             enabled x86_64 && yasm_extra="-m amd64"
4574             yasm_debug="-g dwarf2"
4575         elif check_cmd nasm -v; then
4576             yasmexe=nasm
4577             yasm_debug="-g -F dwarf"
4578             if enabled x86_64; then
4579                 case "$objformat" in
4580                     elf)   objformat=elf64 ;;
4581                     win32) objformat=win64 ;;
4582                 esac
4583             fi
4584         fi
4585
4586         YASMFLAGS="-f $objformat $yasm_extra"
4587         enabled pic               && append YASMFLAGS "-DPIC"
4588         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4589         case "$objformat" in
4590             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4591         esac
4592
4593         check_yasm "movbe ecx, [5]" && enable yasm ||
4594             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4595         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4596         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4597         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4598         check_yasm "CPU amdnop" || disable cpunop
4599     fi
4600
4601     case "$cpu" in
4602         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4603             disable fast_clz
4604         ;;
4605     esac
4606
4607 fi
4608
4609 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4610
4611 check_ldflags -Wl,--as-needed
4612
4613 if check_func dlopen; then
4614     ldl=
4615 elif check_func dlopen -ldl; then
4616     ldl=-ldl
4617 fi
4618
4619 if ! disabled network; then
4620     check_func getaddrinfo $network_extralibs
4621     check_func getservbyport $network_extralibs
4622     check_func inet_aton $network_extralibs
4623
4624     check_type netdb.h "struct addrinfo"
4625     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4626     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4627     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4628     check_type poll.h "struct pollfd"
4629     check_type netinet/sctp.h "struct sctp_event_subscribe"
4630     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4631     check_type netinet/in.h "struct sockaddr_in6"
4632     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4633     check_type "sys/types.h sys/socket.h" socklen_t
4634
4635     # Prefer arpa/inet.h over winsock2
4636     if check_header arpa/inet.h ; then
4637         check_func closesocket
4638     elif check_header winsock2.h ; then
4639         check_func_headers winsock2.h closesocket -lws2 &&
4640             network_extralibs="-lws2" ||
4641         { check_func_headers winsock2.h closesocket -lws2_32 &&
4642             network_extralibs="-lws2_32"; } || disable winsock2_h network
4643         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4644
4645         check_type ws2tcpip.h socklen_t
4646         check_type ws2tcpip.h "struct addrinfo"
4647         check_type ws2tcpip.h "struct group_source_req"
4648         check_type ws2tcpip.h "struct ip_mreq_source"
4649         check_type ws2tcpip.h "struct ipv6_mreq"
4650         check_type winsock2.h "struct pollfd"
4651         check_struct winsock2.h "struct sockaddr" sa_len
4652         check_type ws2tcpip.h "struct sockaddr_in6"
4653         check_type ws2tcpip.h "struct sockaddr_storage"
4654     else
4655         disable network
4656     fi
4657 fi
4658
4659 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4660 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4661 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4662 check_builtin sarestart signal.h "SA_RESTART"
4663 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4664
4665 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4666 check_func  ${malloc_prefix}memalign            && enable memalign
4667 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4668
4669 check_func  access
4670 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
4671 check_func  fcntl
4672 check_func  fork
4673 check_func  gethrtime
4674 check_func  getopt
4675 check_func  getrusage
4676 check_func  gettimeofday
4677 check_func  isatty
4678 check_func  localtime_r
4679 check_func  mach_absolute_time
4680 check_func  mkstemp
4681 check_func  mmap
4682 check_func  mprotect
4683 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4684 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4685 check_func  sched_getaffinity
4686 check_func  setrlimit
4687 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4688 check_func  strerror_r
4689 check_func  sysconf
4690 check_func  sysctl
4691 check_func  usleep
4692
4693 check_func_headers conio.h kbhit
4694 check_func_headers io.h setmode
4695 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4696 check_func_headers stdlib.h getenv
4697
4698 check_func_headers windows.h CoTaskMemFree -lole32
4699 check_func_headers windows.h GetProcessAffinityMask
4700 check_func_headers windows.h GetProcessTimes
4701 check_func_headers windows.h GetSystemTimeAsFileTime
4702 check_func_headers windows.h MapViewOfFile
4703 check_func_headers windows.h PeekNamedPipe
4704 check_func_headers windows.h SetConsoleTextAttribute
4705 check_func_headers windows.h Sleep
4706 check_func_headers windows.h VirtualAlloc
4707 check_func_headers glob.h glob
4708 enabled xlib &&
4709     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4710
4711 check_header cl/cl.h
4712 check_header direct.h
4713 check_header dlfcn.h
4714 check_header dxva.h
4715 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4716 check_header io.h
4717 check_header libcrystalhd/libcrystalhd_if.h
4718 check_header mach/mach_time.h
4719 check_header malloc.h
4720 check_header poll.h
4721 check_header sys/mman.h
4722 check_header sys/param.h
4723 check_header sys/resource.h
4724 check_header sys/select.h
4725 check_header sys/time.h
4726 check_header sys/un.h
4727 check_header termios.h
4728 check_header unistd.h
4729 check_header vdpau/vdpau.h
4730 check_header vdpau/vdpau_x11.h
4731 check_header VideoDecodeAcceleration/VDADecoder.h
4732 check_header windows.h
4733 check_header X11/extensions/XvMClib.h
4734 check_header asm/types.h
4735
4736 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4737 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4738 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4739
4740 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4741
4742 if ! disabled w32threads && ! enabled pthreads; then
4743     check_func_headers "windows.h process.h" _beginthreadex &&
4744         enable w32threads || disable w32threads
4745 fi
4746
4747 # check for some common methods of building with pthread support
4748 # do this before the optional library checks as some of them require pthreads
4749 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4750     enable pthreads
4751     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4752         add_cflags -pthread
4753         add_extralibs -pthread
4754     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4755         add_cflags -pthreads
4756         add_extralibs -pthreads
4757     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4758         add_cflags -ldl -pthread
4759         add_extralibs -ldl -pthread
4760     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4761         add_extralibs -lpthreadGC2
4762     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4763         :
4764     elif ! check_func pthread_join && ! check_func pthread_create; then
4765         disable pthreads
4766     fi
4767     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4768 fi
4769
4770
4771 if enabled pthreads; then
4772   check_func pthread_cancel
4773 fi
4774
4775 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4776 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4777 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4778
4779 check_lib math.h sin -lm && LIBM="-lm"
4780 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4781
4782 atan2f_args=2
4783 ldexpf_args=2
4784 powf_args=2
4785 fminf_args=2
4786
4787 for func in $MATH_FUNCS; do
4788     eval check_mathfunc $func \${${func}_args:-1}
4789 done
4790
4791 # these are off by default, so fail if requested and not available
4792 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4793 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4794                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4795                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4796 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4797 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4798 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4799 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4800 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4801 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4802 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4803 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4804 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4805 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4806                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4807                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4808 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4809 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4810 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4811 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4812 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4813 enabled fontconfig        && enable libfontconfig
4814 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4815 enabled libfreetype       && require_libfreetype
4816 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4817 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4818 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4819                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4820                       &nbs