Merge commit '66acb76bb0492b263215ca9b4d927a7be39ace02'
[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 [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-avutil         disable libavutil build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Hardware accelerators:
153   --disable-d3d11va        disable D3D11VA code [autodetect]
154   --disable-dxva2          disable DXVA2 code [autodetect]
155   --disable-vaapi          disable VAAPI code [autodetect]
156   --disable-vda            disable VDA code [autodetect]
157   --disable-vdpau          disable VDPAU code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
200   --enable-frei0r          enable frei0r video filtering [no]
201   --enable-gnutls          enable gnutls, needed for https support
202                            if openssl is not used [no]
203   --disable-iconv          disable iconv [autodetect]
204   --enable-ladspa          enable LADSPA audio filtering [no]
205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
206   --enable-libass          enable libass subtitles rendering,
207                            needed for subtitles and ass filter [no]
208   --enable-libbluray       enable BluRay reading using libbluray [no]
209   --enable-libbs2b         enable bs2b DSP library [no]
210   --enable-libcaca         enable textual display using libcaca [no]
211   --enable-libcelt         enable CELT decoding via libcelt [no]
212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
214                            and libraw1394 [no]
215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
216   --enable-libfaac         enable AAC encoding via libfaac [no]
217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
221   --enable-libgme          enable Game Music Emu via libgme [no]
222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
225   --enable-libmfx          enable HW acceleration through libmfx
226   --enable-libmodplug      enable ModPlug via libmodplug [no]
227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
228   --enable-libnut          enable NUT (de)muxing via libnut,
229                            native (de)muxer exists [no]
230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
232   --enable-libopencv       enable video filtering via libopencv [no]
233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
235   --enable-libopus         enable Opus de/encoding via libopus [no]
236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
237   --enable-libquvi         enable quvi input via libquvi [no]
238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
242   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
243   --enable-libsoxr         enable Include libsoxr resampling [no]
244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
245   --enable-libssh          enable SFTP protocol via libssh [no]
246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
247   --enable-libtheora       enable Theora encoding via libtheora [no]
248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
251   --enable-libvidstab      enable video stabilization using vid.stab [no]
252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
255                            native implementation exists [no]
256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
258   --enable-libwebp         enable WebP encoding via libwebp [no]
259   --enable-libx264         enable H.264 encoding via x264 [no]
260   --enable-libx265         enable HEVC encoding via x265 [no]
261   --enable-libxavs         enable AVS encoding via xavs [no]
262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
266   --enable-libxvid         enable Xvid encoding via xvidcore,
267                            native MPEG-4/Xvid encoder exists [no]
268   --enable-libzmq          enable message passing via libzmq [no]
269   --enable-libzvbi         enable teletext support via libzvbi [no]
270   --disable-lzma           disable lzma [autodetect]
271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
272   --enable-mmal            enable decoding via MMAL [no]
273   --enable-nvenc           enable NVIDIA NVENC support [no]
274   --enable-openal          enable OpenAL 1.1 capture support [no]
275   --enable-opencl          enable OpenCL code
276   --enable-opengl          enable OpenGL rendering [no]
277   --enable-openssl         enable openssl, needed for https support
278                            if gnutls is not used [no]
279   --disable-sdl            disable sdl [autodetect]
280   --disable-securetransport disable Secure Transport, needed for TLS support
281                            on OSX if openssl and gnutls are not used [autodetect]
282   --enable-x11grab         enable X11 grabbing (legacy) [no]
283   --disable-xlib           disable xlib [autodetect]
284   --disable-zlib           disable zlib [autodetect]
285
286 Toolchain options:
287   --arch=ARCH              select architecture [$arch]
288   --cpu=CPU                select the minimum required CPU (affects
289                            instruction selection, may crash on older CPUs)
290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
291   --progs-suffix=SUFFIX    program name suffix []
292   --enable-cross-compile   assume a cross-compiler is used
293   --sysroot=PATH           root of cross-build tree
294   --sysinclude=PATH        location of cross-build system headers
295   --target-os=OS           compiler targets OS [$target_os]
296   --target-exec=CMD        command to run executables on target
297   --target-path=DIR        path to view of build directory on target
298   --target-samples=DIR     path to samples directory on target
299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
300   --toolchain=NAME         set tool defaults according to NAME
301   --nm=NM                  use nm tool NM [$nm_default]
302   --ar=AR                  use archive tool AR [$ar_default]
303   --as=AS                  use assembler AS [$as_default]
304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
306   --cc=CC                  use C compiler CC [$cc_default]
307   --cxx=CXX                use C compiler CXX [$cxx_default]
308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
309   --ld=LD                  use linker LD [$ld_default]
310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
314   --host-cc=HOSTCC         use host C compiler HOSTCC
315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
317   --host-ld=HOSTLD         use host linker HOSTLD
318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
319   --host-libs=HLIBS        use libs HLIBS when linking for host
320   --host-os=OS             compiler host OS [$target_os]
321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
325   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
326   --extra-libs=ELIBS       add ELIBS [$ELIBS]
327   --extra-version=STRING   version string suffix []
328   --optflags=OPTFLAGS      override optimization-related compiler flags
329   --build-suffix=SUFFIX    library name suffix []
330   --enable-pic             build position-independent code
331   --enable-thumb           compile for Thumb instruction set
332   --enable-lto             use link-time optimization
333   --env="ENV=override"     override the environment variables
334
335 Advanced options (experts only):
336   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
337   --disable-symver         disable symbol versioning
338   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
339   --disable-safe-bitstream-reader
340                            disable buffer boundary checking in bitreaders
341                            (faster, but may crash)
342   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
343   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
344
345 Optimization options (experts only):
346   --disable-asm            disable all assembly optimizations
347   --disable-altivec        disable AltiVec optimizations
348   --disable-vsx            disable VSX optimizations
349   --disable-power8         disable POWER8 optimizations
350   --disable-amd3dnow       disable 3DNow! optimizations
351   --disable-amd3dnowext    disable 3DNow! extended optimizations
352   --disable-mmx            disable MMX optimizations
353   --disable-mmxext         disable MMXEXT optimizations
354   --disable-sse            disable SSE optimizations
355   --disable-sse2           disable SSE2 optimizations
356   --disable-sse3           disable SSE3 optimizations
357   --disable-ssse3          disable SSSE3 optimizations
358   --disable-sse4           disable SSE4 optimizations
359   --disable-sse42          disable SSE4.2 optimizations
360   --disable-avx            disable AVX optimizations
361   --disable-xop            disable XOP optimizations
362   --disable-fma3           disable FMA3 optimizations
363   --disable-fma4           disable FMA4 optimizations
364   --disable-avx2           disable AVX2 optimizations
365   --disable-armv5te        disable armv5te optimizations
366   --disable-armv6          disable armv6 optimizations
367   --disable-armv6t2        disable armv6t2 optimizations
368   --disable-vfp            disable VFP optimizations
369   --disable-neon           disable NEON optimizations
370   --disable-inline-asm     disable use of inline assembly
371   --disable-yasm           disable use of nasm/yasm assembly
372   --disable-mips32r5       disable MIPS32R5 optimizations
373   --disable-mips64r6       disable MIPS64R6 optimizations
374   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
375   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
376   --disable-msa            disable MSA optimizations
377   --disable-mipsfpu        disable floating point MIPS optimizations
378   --disable-mmi            disable Loongson SIMD optimizations
379   --disable-fast-unaligned consider unaligned accesses slow
380
381 Developer options (useful when working on FFmpeg itself):
382   --disable-debug          disable debugging symbols
383   --enable-debug=LEVEL     set the debug level [$debuglevel]
384   --disable-optimizations  disable compiler optimizations
385   --enable-extra-warnings  enable more compiler warnings
386   --disable-stripping      disable stripping of executables and shared libraries
387   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
388                            2 causes a slowdown at runtime.
389   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
390   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
391                            leaks and errors, using the specified valgrind binary.
392                            Cannot be combined with --target-exec
393   --enable-ftrapv          Trap arithmetic overflows
394   --samples=PATH           location of test samples for FATE, if not set use
395                            \$FATE_SAMPLES at make invocation time.
396   --enable-neon-clobber-test check NEON registers for clobbering (should be
397                            used only for debugging purposes)
398   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
399                            should be used only for debugging purposes)
400   --enable-random          randomly enable/disable components
401   --disable-random
402   --enable-random=LIST     randomly enable/disable specific components or
403   --disable-random=LIST    component groups. LIST is a comma-separated list
404                            of NAME[:PROB] entries where NAME is a component
405                            (group) and PROB the probability associated with
406                            NAME (default 0.5).
407   --random-seed=VALUE      seed value for --enable/disable-random
408   --disable-valgrind-backtrace do not print a backtrace under Valgrind
409                            (only applies to --disable-optimizations builds)
410
411 NOTE: Object files are built at the place where configure is launched.
412 EOF
413   exit 0
414 }
415
416 quotes='""'
417
418 log(){
419     echo "$@" >> $logfile
420 }
421
422 log_file(){
423     log BEGIN $1
424     pr -n -t $1 >> $logfile
425     log END $1
426 }
427
428 echolog(){
429     log "$@"
430     echo "$@"
431 }
432
433 warn(){
434     log "WARNING: $*"
435     WARNINGS="${WARNINGS}WARNING: $*\n"
436 }
437
438 die(){
439     echolog "$@"
440     cat <<EOF
441
442 If you think configure made a mistake, make sure you are using the latest
443 version from Git.  If the latest version fails, report the problem to the
444 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
445 EOF
446     if disabled logging; then
447         cat <<EOF
448 Rerun configure with logging enabled (do not use --disable-logging), and
449 include the log this produces with your report.
450 EOF
451     else
452         cat <<EOF
453 Include the log file "$logfile" produced by configure as this will help
454 solve the problem.
455 EOF
456     fi
457     exit 1
458 }
459
460 # Avoid locale weirdness, besides we really just want to translate ASCII.
461 toupper(){
462     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
463 }
464
465 tolower(){
466     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
467 }
468
469 c_escape(){
470     echo "$*" | sed 's/["\\]/\\\0/g'
471 }
472
473 sh_quote(){
474     v=$(echo "$1" | sed "s/'/'\\\\''/g")
475     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
476     echo "$v"
477 }
478
479 cleanws(){
480     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
481 }
482
483 filter(){
484     pat=$1
485     shift
486     for v; do
487         eval "case $v in $pat) echo $v ;; esac"
488     done
489 }
490
491 filter_out(){
492     pat=$1
493     shift
494     for v; do
495         eval "case $v in $pat) ;; *) echo $v ;; esac"
496     done
497 }
498
499 map(){
500     m=$1
501     shift
502     for v; do eval $m; done
503 }
504
505 add_suffix(){
506     suffix=$1
507     shift
508     for v; do echo ${v}${suffix}; done
509 }
510
511 set_all(){
512     value=$1
513     shift
514     for var in $*; do
515         eval $var=$value
516     done
517 }
518
519 set_weak(){
520     value=$1
521     shift
522     for var; do
523         eval : \${$var:=$value}
524     done
525 }
526
527 sanitize_var_name(){
528     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
529 }
530
531 set_safe(){
532     var=$1
533     shift
534     eval $(sanitize_var_name "$var")='$*'
535 }
536
537 get_safe(){
538     eval echo \$$(sanitize_var_name "$1")
539 }
540
541 pushvar(){
542     for pvar in $*; do
543         eval level=\${${pvar}_level:=0}
544         eval ${pvar}_${level}="\$$pvar"
545         eval ${pvar}_level=$(($level+1))
546     done
547 }
548
549 popvar(){
550     for pvar in $*; do
551         eval level=\${${pvar}_level:-0}
552         test $level = 0 && continue
553         eval level=$(($level-1))
554         eval $pvar="\${${pvar}_${level}}"
555         eval ${pvar}_level=$level
556         eval unset ${pvar}_${level}
557     done
558 }
559
560 enable(){
561     set_all yes $*
562 }
563
564 disable(){
565     set_all no $*
566 }
567
568 enable_weak(){
569     set_weak yes $*
570 }
571
572 disable_weak(){
573     set_weak no $*
574 }
575
576 enable_safe(){
577     for var; do
578         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
579     done
580 }
581
582 disable_safe(){
583     for var; do
584         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
585     done
586 }
587
588 do_enable_deep(){
589     for var; do
590         enabled $var && continue
591         eval sel="\$${var}_select"
592         eval sgs="\$${var}_suggest"
593         pushvar var sgs
594         enable_deep $sel
595         popvar sgs
596         enable_deep_weak $sgs
597         popvar var
598     done
599 }
600
601 enable_deep(){
602     do_enable_deep $*
603     enable $*
604 }
605
606 enable_deep_weak(){
607     for var; do
608         disabled $var && continue
609         pushvar var
610         do_enable_deep $var
611         popvar var
612         enable_weak $var
613     done
614 }
615
616 enabled(){
617     test "${1#!}" = "$1" && op== || op=!=
618     eval test "x\$${1#!}" $op "xyes"
619 }
620
621 disabled(){
622     test "${1#!}" = "$1" && op== || op=!=
623     eval test "x\$${1#!}" $op "xno"
624 }
625
626 enabled_all(){
627     for opt; do
628         enabled $opt || return 1
629     done
630 }
631
632 disabled_all(){
633     for opt; do
634         disabled $opt || return 1
635     done
636 }
637
638 enabled_any(){
639     for opt; do
640         enabled $opt && return 0
641     done
642 }
643
644 disabled_any(){
645     for opt; do
646         disabled $opt && return 0
647     done
648     return 1
649 }
650
651 set_default(){
652     for opt; do
653         eval : \${$opt:=\$${opt}_default}
654     done
655 }
656
657 is_in(){
658     value=$1
659     shift
660     for var in $*; do
661         [ $var = $value ] && return 0
662     done
663     return 1
664 }
665
666 do_check_deps(){
667     for cfg; do
668         cfg="${cfg#!}"
669         enabled ${cfg}_checking && die "Circular dependency for $cfg."
670         disabled ${cfg}_checking && continue
671         enable ${cfg}_checking
672         append allopts $cfg
673
674         eval dep_all="\$${cfg}_deps"
675         eval dep_any="\$${cfg}_deps_any"
676         eval dep_sel="\$${cfg}_select"
677         eval dep_sgs="\$${cfg}_suggest"
678         eval dep_ifa="\$${cfg}_if"
679         eval dep_ifn="\$${cfg}_if_any"
680
681         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
682         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
683         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
684
685         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
686         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
687         enabled_all  $dep_all || disable $cfg
688         enabled_any  $dep_any || disable $cfg
689         disabled_any $dep_sel && disable $cfg
690
691         if enabled $cfg; then
692             enable_deep $dep_sel
693             enable_deep_weak $dep_sgs
694         fi
695
696         disable ${cfg}_checking
697     done
698 }
699
700 check_deps(){
701     unset allopts
702
703     do_check_deps "$@"
704
705     for cfg in $allopts; do
706         enabled $cfg || continue
707         eval dep_extralibs="\$${cfg}_extralibs"
708         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
709     done
710 }
711
712 print_config(){
713     pfx=$1
714     files=$2
715     shift 2
716     map 'eval echo "$v \${$v:-no}"' "$@" |
717     awk "BEGIN { split(\"$files\", files) }
718         {
719             c = \"$pfx\" toupper(\$1);
720             v = \$2;
721             sub(/yes/, 1, v);
722             sub(/no/,  0, v);
723             for (f in files) {
724                 file = files[f];
725                 if (file ~ /\\.h\$/) {
726                     printf(\"#define %s %d\\n\", c, v) >>file;
727                 } else if (file ~ /\\.asm\$/) {
728                     printf(\"%%define %s %d\\n\", c, v) >>file;
729                 } else if (file ~ /\\.mak\$/) {
730                     n = -v ? \"\" : \"!\";
731                     printf(\"%s%s=yes\\n\", n, c) >>file;
732                 } else if (file ~ /\\.texi\$/) {
733                     pre = -v ? \"\" : \"@c \";
734                     yesno = \$2;
735                     c2 = tolower(c);
736                     gsub(/_/, \"-\", c2);
737                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
738                 }
739             }
740         }"
741 }
742
743 print_enabled(){
744     suf=$1
745     shift
746     for v; do
747         enabled $v && printf "%s\n" ${v%$suf};
748     done
749 }
750
751 append(){
752     var=$1
753     shift
754     eval "$var=\"\$$var $*\""
755 }
756
757 prepend(){
758     var=$1
759     shift
760     eval "$var=\"$* \$$var\""
761 }
762
763 unique(){
764     var=$1
765     uniq_list=""
766     for tok in $(eval echo \$$var); do
767         uniq_list="$(filter_out $tok $uniq_list) $tok"
768     done
769     eval "$var=\"${uniq_list}\""
770 }
771
772 add_cppflags(){
773     append CPPFLAGS "$@"
774 }
775
776 add_cflags(){
777     append CFLAGS $($cflags_filter "$@")
778 }
779
780 add_cxxflags(){
781     append CXXFLAGS $($cflags_filter "$@")
782 }
783
784 add_asflags(){
785     append ASFLAGS $($asflags_filter "$@")
786 }
787
788 add_ldflags(){
789     append LDFLAGS $($ldflags_filter "$@")
790 }
791
792 add_ldexeflags(){
793     append LDEXEFLAGS $($ldflags_filter "$@")
794 }
795
796 add_ldlibflags(){
797     append LDLIBFLAGS $($ldflags_filter "$@")
798 }
799
800 add_stripflags(){
801     append ASMSTRIPFLAGS "$@"
802 }
803
804 add_extralibs(){
805     prepend extralibs $($ldflags_filter "$@")
806 }
807
808 add_host_cppflags(){
809     append host_cppflags "$@"
810 }
811
812 add_host_cflags(){
813     append host_cflags $($host_cflags_filter "$@")
814 }
815
816 add_host_ldflags(){
817     append host_ldflags $($host_ldflags_filter "$@")
818 }
819
820 add_compat(){
821     append compat_objs $1
822     shift
823     map 'add_cppflags -D$v' "$@"
824 }
825
826 check_cmd(){
827     log "$@"
828     "$@" >> $logfile 2>&1
829 }
830
831 check_stat(){
832     log check_stat "$@"
833     stat "$1" >> $logfile 2>&1
834 }
835
836 cc_o(){
837     eval printf '%s\\n' $CC_O
838 }
839
840 cc_e(){
841     eval printf '%s\\n' $CC_E
842 }
843
844 check_cc(){
845     log check_cc "$@"
846     cat > $TMPC
847     log_file $TMPC
848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
849 }
850
851 check_cxx(){
852     log check_cxx "$@"
853     cat > $TMPCPP
854     log_file $TMPCPP
855     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
856 }
857
858 check_oc(){
859     log check_oc "$@"
860     cat > $TMPM
861     log_file $TMPM
862     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
863 }
864
865 check_cpp(){
866     log check_cpp "$@"
867     cat > $TMPC
868     log_file $TMPC
869     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
870 }
871
872 as_o(){
873     eval printf '%s\\n' $AS_O
874 }
875
876 check_as(){
877     log check_as "$@"
878     cat > $TMPS
879     log_file $TMPS
880     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
881 }
882
883 check_inline_asm(){
884     log check_inline_asm "$@"
885     name="$1"
886     code="$2"
887     shift 2
888     disable $name
889     check_cc "$@" <<EOF && enable $name
890 void foo(void){ __asm__ volatile($code); }
891 EOF
892 }
893
894 check_insn(){
895     log check_insn "$@"
896     check_inline_asm ${1}_inline "\"$2\""
897     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
898 }
899
900 check_yasm(){
901     log check_yasm "$@"
902     echo "$1" > $TMPS
903     log_file $TMPS
904     shift 1
905     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
906 }
907
908 ld_o(){
909     eval printf '%s\\n' $LD_O
910 }
911
912 check_ld(){
913     log check_ld "$@"
914     type=$1
915     shift 1
916     flags=$(filter_out '-l*|*.so' $@)
917     libs=$(filter '-l*|*.so' $@)
918     check_$type $($cflags_filter $flags) || return
919     flags=$($ldflags_filter $flags)
920     libs=$($ldflags_filter $libs)
921     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
922 }
923
924 print_include(){
925     hdr=$1
926     test "${hdr%.h}" = "${hdr}" &&
927         echo "#include $hdr"    ||
928         echo "#include <$hdr>"
929 }
930
931 check_code(){
932     log check_code "$@"
933     check=$1
934     headers=$2
935     code=$3
936     shift 3
937     {
938         for hdr in $headers; do
939             print_include $hdr
940         done
941         echo "int main(void) { $code; return 0; }"
942     } | check_$check "$@"
943 }
944
945 check_cppflags(){
946     log check_cppflags "$@"
947     check_cc "$@" <<EOF && append CPPFLAGS "$@"
948 int x;
949 EOF
950 }
951
952 test_cflags(){
953     log test_cflags "$@"
954     set -- $($cflags_filter "$@")
955     check_cc "$@" <<EOF
956 int x;
957 EOF
958 }
959
960 check_cflags(){
961     log check_cflags "$@"
962     test_cflags "$@" && add_cflags "$@"
963 }
964
965 check_cxxflags(){
966     log check_cxxflags "$@"
967     set -- $($cflags_filter "$@")
968     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
969 int x;
970 EOF
971 }
972
973 test_ldflags(){
974     log test_ldflags "$@"
975     check_ld "cc" "$@" <<EOF
976 int main(void){ return 0; }
977 EOF
978 }
979
980 check_ldflags(){
981     log check_ldflags "$@"
982     test_ldflags "$@" && add_ldflags "$@"
983 }
984
985 test_stripflags(){
986     log test_stripflags "$@"
987     # call check_cc to get a fresh TMPO
988     check_cc <<EOF
989 int main(void) { return 0; }
990 EOF
991     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
992 }
993
994 check_stripflags(){
995     log check_stripflags "$@"
996     test_stripflags "$@" && add_stripflags "$@"
997 }
998
999 check_header(){
1000     log check_header "$@"
1001     header=$1
1002     shift
1003     disable_safe $header
1004     check_cpp "$@" <<EOF && enable_safe $header
1005 #include <$header>
1006 int x;
1007 EOF
1008 }
1009
1010 check_header_oc(){
1011     log check_header_oc "$@"
1012     rm -f -- "$TMPO"
1013     header=$1
1014     shift
1015     disable_safe $header
1016     {
1017        echo "#include <$header>"
1018        echo "int main(void) { return 0; }"
1019     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1020 }
1021
1022 check_func(){
1023     log check_func "$@"
1024     func=$1
1025     shift
1026     disable $func
1027     check_ld "cc" "$@" <<EOF && enable $func
1028 extern int $func();
1029 int main(void){ $func(); }
1030 EOF
1031 }
1032
1033 check_mathfunc(){
1034     log check_mathfunc "$@"
1035     func=$1
1036     narg=$2
1037     shift 2
1038     test $narg = 2 && args="f, g" || args="f"
1039     disable $func
1040     check_ld "cc" "$@" <<EOF && enable $func
1041 #include <math.h>
1042 float foo(float f, float g) { return $func($args); }
1043 int main(void){ return (int) foo; }
1044 EOF
1045 }
1046
1047 check_func_headers(){
1048     log check_func_headers "$@"
1049     headers=$1
1050     funcs=$2
1051     shift 2
1052     {
1053         for hdr in $headers; do
1054             print_include $hdr
1055         done
1056         for func in $funcs; do
1057             echo "long check_$func(void) { return (long) $func; }"
1058         done
1059         echo "int main(void) { return 0; }"
1060     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1061 }
1062
1063 check_class_headers_cpp(){
1064     log check_class_headers_cpp "$@"
1065     headers=$1
1066     classes=$2
1067     shift 2
1068     {
1069         for hdr in $headers; do
1070             echo "#include <$hdr>"
1071         done
1072         echo "int main(void) { "
1073         i=1
1074         for class in $classes; do
1075             echo "$class obj$i;"
1076             i=$(expr $i + 1)
1077         done
1078         echo "return 0; }"
1079     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1080 }
1081
1082 check_cpp_condition(){
1083     log check_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 check_lib(){
1096     log check_lib "$@"
1097     header="$1"
1098     func="$2"
1099     shift 2
1100     check_header $header && check_func $func "$@" && add_extralibs "$@"
1101 }
1102
1103 check_lib2(){
1104     log check_lib2 "$@"
1105     headers="$1"
1106     funcs="$2"
1107     shift 2
1108     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1109 }
1110
1111 check_lib_cpp(){
1112     log check_lib_cpp "$@"
1113     headers="$1"
1114     classes="$2"
1115     shift 2
1116     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1117 }
1118
1119 check_pkg_config(){
1120     log check_pkg_config "$@"
1121     pkgandversion="$1"
1122     pkg="${1%% *}"
1123     headers="$2"
1124     funcs="$3"
1125     shift 3
1126     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1127     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1128     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1129     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1130         set_safe "${pkg}_cflags" $pkg_cflags   &&
1131         set_safe "${pkg}_libs"   $pkg_libs
1132 }
1133
1134 check_exec(){
1135     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1136 }
1137
1138 check_exec_crash(){
1139     code=$(cat)
1140
1141     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1142     # are safe but may not be available everywhere.  Thus we use
1143     # raise(SIGTERM) instead.  The check is run in a subshell so we
1144     # can redirect the "Terminated" message from the shell.  SIGBUS
1145     # is not defined by standard C so it is used conditionally.
1146
1147     (check_exec "$@") >> $logfile 2>&1 <<EOF
1148 #include <signal.h>
1149 static void sighandler(int sig){
1150     raise(SIGTERM);
1151 }
1152 int foo(void){
1153     $code
1154 }
1155 int (*func_ptr)(void) = foo;
1156 int main(void){
1157     signal(SIGILL, sighandler);
1158     signal(SIGFPE, sighandler);
1159     signal(SIGSEGV, sighandler);
1160 #ifdef SIGBUS
1161     signal(SIGBUS, sighandler);
1162 #endif
1163     return func_ptr();
1164 }
1165 EOF
1166 }
1167
1168 check_type(){
1169     log check_type "$@"
1170     headers=$1
1171     type=$2
1172     shift 2
1173     disable_safe "$type"
1174     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1175 }
1176
1177 check_struct(){
1178     log check_struct "$@"
1179     headers=$1
1180     struct=$2
1181     member=$3
1182     shift 3
1183     disable_safe "${struct}_${member}"
1184     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1185         enable_safe "${struct}_${member}"
1186 }
1187
1188 check_builtin(){
1189     log check_builtin "$@"
1190     name=$1
1191     headers=$2
1192     builtin=$3
1193     shift 3
1194     disable "$name"
1195     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1196 }
1197
1198 check_compile_assert(){
1199     log check_compile_assert "$@"
1200     name=$1
1201     headers=$2
1202     condition=$3
1203     shift 3
1204     disable "$name"
1205     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1206 }
1207
1208 require(){
1209     name="$1"
1210     header="$2"
1211     func="$3"
1212     shift 3
1213     check_lib $header $func "$@" || die "ERROR: $name not found"
1214 }
1215
1216 require2(){
1217     name="$1"
1218     headers="$2"
1219     func="$3"
1220     shift 3
1221     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1222 }
1223
1224 require_cpp(){
1225     name="$1"
1226     headers="$2"
1227     classes="$3"
1228     shift 3
1229     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1230 }
1231
1232 use_pkg_config(){
1233     pkg="$1"
1234     check_pkg_config "$@" || return 1
1235     add_cflags    $(get_safe "${pkg}_cflags")
1236     add_extralibs $(get_safe "${pkg}_libs")
1237 }
1238
1239 require_pkg_config(){
1240     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1241 }
1242
1243 require_libfreetype(){
1244     log require_libfreetype "$@"
1245     pkg="freetype2"
1246     check_cmd $pkg_config --exists --print-errors $pkg \
1247       || die "ERROR: $pkg not found"
1248     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1249     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1250     {
1251         echo "#include <ft2build.h>"
1252         echo "#include FT_FREETYPE_H"
1253         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1254         echo "int main(void) { return 0; }"
1255     } | check_ld "cc" $pkg_cflags $pkg_libs \
1256       && set_safe "${pkg}_cflags" $pkg_cflags \
1257       && set_safe "${pkg}_libs"   $pkg_libs \
1258       || die "ERROR: $pkg not found"
1259     add_cflags    $(get_safe "${pkg}_cflags")
1260     add_extralibs $(get_safe "${pkg}_libs")
1261 }
1262
1263 hostcc_e(){
1264     eval printf '%s\\n' $HOSTCC_E
1265 }
1266
1267 hostcc_o(){
1268     eval printf '%s\\n' $HOSTCC_O
1269 }
1270
1271 check_host_cc(){
1272     log check_host_cc "$@"
1273     cat > $TMPC
1274     log_file $TMPC
1275     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1276 }
1277
1278 check_host_cpp(){
1279     log check_host_cpp "$@"
1280     cat > $TMPC
1281     log_file $TMPC
1282     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1283 }
1284
1285 check_host_cppflags(){
1286     log check_host_cppflags "$@"
1287     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1288 int x;
1289 EOF
1290 }
1291
1292 check_host_cflags(){
1293     log check_host_cflags "$@"
1294     set -- $($host_cflags_filter "$@")
1295     check_host_cc "$@" <<EOF && append host_cflags "$@"
1296 int x;
1297 EOF
1298 }
1299
1300 check_host_cpp_condition(){
1301     log check_host_cpp_condition "$@"
1302     header=$1
1303     condition=$2
1304     shift 2
1305     check_host_cpp "$@" <<EOF
1306 #include <$header>
1307 #if !($condition)
1308 #error "unsatisfied condition: $condition"
1309 #endif
1310 EOF
1311 }
1312
1313 apply(){
1314     file=$1
1315     shift
1316     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1317 }
1318
1319 cp_if_changed(){
1320     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1321     mkdir -p "$(dirname $2)"
1322     $cp_f "$1" "$2"
1323 }
1324
1325 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1326 # system-dependent things.
1327
1328 COMPONENT_LIST="
1329     bsfs
1330     decoders
1331     demuxers
1332     encoders
1333     filters
1334     hwaccels
1335     indevs
1336     muxers
1337     outdevs
1338     parsers
1339     protocols
1340 "
1341
1342 EXAMPLE_LIST="
1343     avio_reading_example
1344     avio_list_dir_example
1345     decoding_encoding_example
1346     demuxing_decoding_example
1347     extract_mvs_example
1348     filter_audio_example
1349     filtering_audio_example
1350     filtering_video_example
1351     metadata_example
1352     muxing_example
1353     qsvdec_example
1354     remuxing_example
1355     resampling_audio_example
1356     scaling_video_example
1357     transcode_aac_example
1358     transcoding_example
1359 "
1360
1361 EXTERNAL_LIBRARY_LIST="
1362     avisynth
1363     bzlib
1364     crystalhd
1365     decklink
1366     frei0r
1367     gnutls
1368     iconv
1369     ladspa
1370     libaacplus
1371     libass
1372     libbluray
1373     libbs2b
1374     libcaca
1375     libcdio
1376     libcelt
1377     libdc1394
1378     libdcadec
1379     libfaac
1380     libfdk_aac
1381     libflite
1382     libfontconfig
1383     libfreetype
1384     libfribidi
1385     libgme
1386     libgsm
1387     libiec61883
1388     libilbc
1389     libmfx
1390     libmodplug
1391     libmp3lame
1392     libnut
1393     libopencore_amrnb
1394     libopencore_amrwb
1395     libopencv
1396     libopenh264
1397     libopenjpeg
1398     libopus
1399     libpulse
1400     libquvi
1401     librtmp
1402     libschroedinger
1403     libshine
1404     libsmbclient
1405     libsnappy
1406     libsoxr
1407     libspeex
1408     libssh
1409     libstagefright_h264
1410     libtheora
1411     libtwolame
1412     libutvideo
1413     libv4l2
1414     libvidstab
1415     libvo_aacenc
1416     libvo_amrwbenc
1417     libvorbis
1418     libvpx
1419     libwavpack
1420     libwebp
1421     libx264
1422     libx265
1423     libxavs
1424     libxcb
1425     libxcb_shm
1426     libxcb_shape
1427     libxcb_xfixes
1428     libxvid
1429     libzmq
1430     libzvbi
1431     lzma
1432     mmal
1433     nvenc
1434     openal
1435     opencl
1436     opengl
1437     openssl
1438     sdl
1439     securetransport
1440     x11grab
1441     xlib
1442     zlib
1443 "
1444
1445 DOCUMENT_LIST="
1446     doc
1447     htmlpages
1448     manpages
1449     podpages
1450     txtpages
1451 "
1452
1453 FEATURE_LIST="
1454     ftrapv
1455     gray
1456     hardcoded_tables
1457     runtime_cpudetect
1458     safe_bitstream_reader
1459     shared
1460     small
1461     static
1462     swscale_alpha
1463 "
1464
1465 HWACCEL_LIST="
1466     d3d11va
1467     dxva2
1468     vaapi
1469     vda
1470     vdpau
1471     xvmc
1472 "
1473
1474 LIBRARY_LIST="
1475     avcodec
1476     avdevice
1477     avfilter
1478     avformat
1479     avresample
1480     avutil
1481     postproc
1482     swresample
1483     swscale
1484 "
1485
1486 LICENSE_LIST="
1487     gpl
1488     nonfree
1489     version3
1490 "
1491
1492 PROGRAM_LIST="
1493     ffplay
1494     ffprobe
1495     ffserver
1496     ffmpeg
1497 "
1498
1499 SUBSYSTEM_LIST="
1500     dct
1501     dwt
1502     error_resilience
1503     faan
1504     fast_unaligned
1505     fft
1506     lsp
1507     lzo
1508     mdct
1509     pixelutils
1510     network
1511     rdft
1512 "
1513
1514 CONFIG_LIST="
1515     $COMPONENT_LIST
1516     $DOCUMENT_LIST
1517     $EXAMPLE_LIST
1518     $EXTERNAL_LIBRARY_LIST
1519     $FEATURE_LIST
1520     $HWACCEL_LIST
1521     $LICENSE_LIST
1522     $LIBRARY_LIST
1523     $PROGRAM_LIST
1524     $SUBSYSTEM_LIST
1525     fontconfig
1526     incompatible_libav_abi
1527     memalign_hack
1528     memory_poisoning
1529     neon_clobber_test
1530     pic
1531     pod2man
1532     raise_major
1533     thumb
1534     valgrind_backtrace
1535     xmm_clobber_test
1536 "
1537
1538 THREADS_LIST="
1539     pthreads
1540     os2threads
1541     w32threads
1542 "
1543
1544 ATOMICS_LIST="
1545     atomics_gcc
1546     atomics_suncc
1547     atomics_win32
1548 "
1549
1550 ARCH_LIST="
1551     aarch64
1552     alpha
1553     arm
1554     avr32
1555     avr32_ap
1556     avr32_uc
1557     bfin
1558     ia64
1559     m68k
1560     mips
1561     mips64
1562     parisc
1563     ppc
1564     ppc64
1565     s390
1566     sh4
1567     sparc
1568     sparc64
1569     tilegx
1570     tilepro
1571     tomi
1572     x86
1573     x86_32
1574     x86_64
1575 "
1576
1577 ARCH_EXT_LIST_ARM="
1578     armv5te
1579     armv6
1580     armv6t2
1581     armv8
1582     neon
1583     vfp
1584     vfpv3
1585     setend
1586 "
1587
1588 ARCH_EXT_LIST_MIPS="
1589     mipsfpu
1590     mips32r2
1591     mips32r5
1592     mips64r6
1593     mipsdspr1
1594     mipsdspr2
1595     msa
1596 "
1597
1598 ARCH_EXT_LIST_LOONGSON="
1599     loongson2
1600     loongson3
1601     mmi
1602 "
1603
1604 ARCH_EXT_LIST_X86_SIMD="
1605     amd3dnow
1606     amd3dnowext
1607     avx
1608     avx2
1609     fma3
1610     fma4
1611     mmx
1612     mmxext
1613     sse
1614     sse2
1615     sse3
1616     sse4
1617     sse42
1618     ssse3
1619     xop
1620 "
1621
1622 ARCH_EXT_LIST_PPC="
1623     altivec
1624     dcbzl
1625     ldbrx
1626     power8
1627     ppc4xx
1628     vsx
1629 "
1630
1631 ARCH_EXT_LIST_X86="
1632     $ARCH_EXT_LIST_X86_SIMD
1633     cpunop
1634     i686
1635 "
1636
1637 ARCH_EXT_LIST="
1638     $ARCH_EXT_LIST_ARM
1639     $ARCH_EXT_LIST_PPC
1640     $ARCH_EXT_LIST_X86
1641     $ARCH_EXT_LIST_MIPS
1642     $ARCH_EXT_LIST_LOONGSON
1643 "
1644
1645 ARCH_FEATURES="
1646     aligned_stack
1647     fast_64bit
1648     fast_clz
1649     fast_cmov
1650     local_aligned_8
1651     local_aligned_16
1652     local_aligned_32
1653     simd_align_16
1654 "
1655
1656 BUILTIN_LIST="
1657     atomic_cas_ptr
1658     atomic_compare_exchange
1659     machine_rw_barrier
1660     MemoryBarrier
1661     mm_empty
1662     rdtsc
1663     sarestart
1664     sync_val_compare_and_swap
1665 "
1666 HAVE_LIST_CMDLINE="
1667     inline_asm
1668     symver
1669     yasm
1670 "
1671
1672 HAVE_LIST_PUB="
1673     bigendian
1674     fast_unaligned
1675     incompatible_libav_abi
1676 "
1677
1678 HEADERS_LIST="
1679     alsa_asoundlib_h
1680     altivec_h
1681     arpa_inet_h
1682     asm_types_h
1683     cdio_paranoia_h
1684     cdio_paranoia_paranoia_h
1685     dev_bktr_ioctl_bt848_h
1686     dev_bktr_ioctl_meteor_h
1687     dev_ic_bt8xx_h
1688     dev_video_bktr_ioctl_bt848_h
1689     dev_video_meteor_ioctl_meteor_h
1690     direct_h
1691     dlfcn_h
1692     d3d11_h
1693     dxva_h
1694     ES2_gl_h
1695     gsm_h
1696     io_h
1697     mach_mach_time_h
1698     machine_ioctl_bt848_h
1699     machine_ioctl_meteor_h
1700     malloc_h
1701     openjpeg_1_5_openjpeg_h
1702     OpenGL_gl3_h
1703     poll_h
1704     sndio_h
1705     soundcard_h
1706     sys_mman_h
1707     sys_param_h
1708     sys_resource_h
1709     sys_select_h
1710     sys_soundcard_h
1711     sys_time_h
1712     sys_un_h
1713     sys_videoio_h
1714     termios_h
1715     udplite_h
1716     unistd_h
1717     valgrind_valgrind_h
1718     windows_h
1719     winsock2_h
1720 "
1721
1722 INTRINSICS_LIST="
1723     intrinsics_neon
1724 "
1725
1726 MATH_FUNCS="
1727     atanf
1728     atan2f
1729     cbrt
1730     cbrtf
1731     cosf
1732     exp2
1733     exp2f
1734     expf
1735     isinf
1736     isnan
1737     ldexpf
1738     llrint
1739     llrintf
1740     log2
1741     log2f
1742     log10f
1743     lrint
1744     lrintf
1745     powf
1746     rint
1747     round
1748     roundf
1749     sinf
1750     trunc
1751     truncf
1752 "
1753
1754 SYSTEM_FUNCS="
1755     access
1756     aligned_malloc
1757     clock_gettime
1758     closesocket
1759     CommandLineToArgvW
1760     CoTaskMemFree
1761     CryptGenRandom
1762     dlopen
1763     fcntl
1764     flt_lim
1765     fork
1766     getaddrinfo
1767     gethrtime
1768     getopt
1769     GetProcessAffinityMask
1770     GetProcessMemoryInfo
1771     GetProcessTimes
1772     getrusage
1773     getservbyport
1774     GetSystemTimeAsFileTime
1775     gettimeofday
1776     glob
1777     glXGetProcAddress
1778     gmtime_r
1779     inet_aton
1780     isatty
1781     jack_port_get_latency_range
1782     kbhit
1783     localtime_r
1784     lzo1x_999_compress
1785     mach_absolute_time
1786     MapViewOfFile
1787     memalign
1788     mkstemp
1789     mmap
1790     mprotect
1791     nanosleep
1792     PeekNamedPipe
1793     posix_memalign
1794     pthread_cancel
1795     sched_getaffinity
1796     SetConsoleTextAttribute
1797     SetConsoleCtrlHandler
1798     setmode
1799     setrlimit
1800     Sleep
1801     strerror_r
1802     sysconf
1803     sysctl
1804     usleep
1805     VirtualAlloc
1806     wglGetProcAddress
1807 "
1808
1809 TOOLCHAIN_FEATURES="
1810     as_dn_directive
1811     as_func
1812     as_object_arch
1813     asm_mod_q
1814     attribute_may_alias
1815     attribute_packed
1816     ebp_available
1817     ebx_available
1818     gnu_as
1819     gnu_windres
1820     ibm_asm
1821     inline_asm_labels
1822     inline_asm_nonlocal_labels
1823     inline_asm_direct_symbol_refs
1824     pragma_deprecated
1825     rsync_contimeout
1826     symver_asm_label
1827     symver_gnu_asm
1828     vfp_args
1829     xform_asm
1830     xmm_clobbers
1831 "
1832
1833 TYPES_LIST="
1834     CONDITION_VARIABLE_Ptr
1835     socklen_t
1836     struct_addrinfo
1837     struct_dcadec_exss_info_matrix_encoding
1838     struct_group_source_req
1839     struct_ip_mreq_source
1840     struct_ipv6_mreq
1841     struct_pollfd
1842     struct_rusage_ru_maxrss
1843     struct_sctp_event_subscribe
1844     struct_sockaddr_in6
1845     struct_sockaddr_sa_len
1846     struct_sockaddr_storage
1847     struct_stat_st_mtim_tv_nsec
1848     struct_v4l2_frmivalenum_discrete
1849 "
1850
1851 HAVE_LIST="
1852     $ARCH_EXT_LIST
1853     $(add_suffix _external $ARCH_EXT_LIST)
1854     $(add_suffix _inline   $ARCH_EXT_LIST)
1855     $ARCH_FEATURES
1856     $ATOMICS_LIST
1857     $BUILTIN_LIST
1858     $HAVE_LIST_CMDLINE
1859     $HAVE_LIST_PUB
1860     $HEADERS_LIST
1861     $INTRINSICS_LIST
1862     $MATH_FUNCS
1863     $SYSTEM_FUNCS
1864     $THREADS_LIST
1865     $TOOLCHAIN_FEATURES
1866     $TYPES_LIST
1867     atomics_native
1868     dos_paths
1869     dxva2api_cobj
1870     dxva2_lib
1871     libc_msvcrt
1872     libdc1394_1
1873     libdc1394_2
1874     makeinfo
1875     makeinfo_html
1876     perl
1877     pod2man
1878     sdl
1879     section_data_rel_ro
1880     texi2html
1881     threads
1882     vaapi_x11
1883     vdpau_x11
1884     xlib
1885 "
1886
1887 # options emitted with CONFIG_ prefix but not available on the command line
1888 CONFIG_EXTRA="
1889     aandcttables
1890     ac3dsp
1891     audio_frame_queue
1892     audiodsp
1893     blockdsp
1894     bswapdsp
1895     cabac
1896     dvprofile
1897     exif
1898     faandct
1899     faanidct
1900     fdctdsp
1901     fmtconvert
1902     frame_thread_encoder
1903     gcrypt
1904     gmp
1905     golomb
1906     gplv3
1907     h263dsp
1908     h264chroma
1909     h264dsp
1910     h264pred
1911     h264qpel
1912     hpeldsp
1913     huffman
1914     huffyuvdsp
1915     huffyuvencdsp
1916     idctdsp
1917     iirfilter
1918     imdct15
1919     intrax8
1920     jpegtables
1921     lgplv3
1922     llauddsp
1923     llviddsp
1924     lpc
1925     me_cmp
1926     mpeg_er
1927     mpegaudio
1928     mpegaudiodsp
1929     mpegvideo
1930     mpegvideoenc
1931     pixblockdsp
1932     qpeldsp
1933     qsv
1934     qsvdec
1935     qsvenc
1936     rangecoder
1937     riffdec
1938     riffenc
1939     rtpdec
1940     rtpenc_chain
1941     sinewin
1942     snappy
1943     startcode
1944     texturedsp
1945     texturedspenc
1946     tpeldsp
1947     videodsp
1948     vp3dsp
1949     wma_freqs
1950 "
1951
1952 CMDLINE_SELECT="
1953     $ARCH_EXT_LIST
1954     $CONFIG_LIST
1955     $HAVE_LIST_CMDLINE
1956     $THREADS_LIST
1957     asm
1958     cross_compile
1959     debug
1960     extra_warnings
1961     logging
1962     lto
1963     optimizations
1964     rpath
1965     stripping
1966 "
1967
1968 PATHS_LIST="
1969     bindir
1970     datadir
1971     docdir
1972     incdir
1973     libdir
1974     mandir
1975     pkgconfigdir
1976     prefix
1977     shlibdir
1978 "
1979
1980 CMDLINE_SET="
1981     $PATHS_LIST
1982     ar
1983     arch
1984     as
1985     assert_level
1986     build_suffix
1987     cc
1988     cpu
1989     cross_prefix
1990     cxx
1991     dep_cc
1992     doxygen
1993     env
1994     extra_version
1995     gas
1996     host_cc
1997     host_cflags
1998     host_ld
1999     host_ldflags
2000     host_libs
2001     host_os
2002     install
2003     ld
2004     logfile
2005     malloc_prefix
2006     nm
2007     optflags
2008     pkg_config
2009     pkg_config_flags
2010     progs_suffix
2011     random_seed
2012     ranlib
2013     samples
2014     strip
2015     sws_max_filter_size
2016     sysinclude
2017     sysroot
2018     target_exec
2019     target_os
2020     target_path
2021     target_samples
2022     tempprefix
2023     toolchain
2024     valgrind
2025     yasmexe
2026 "
2027
2028 CMDLINE_APPEND="
2029     extra_cflags
2030     extra_cxxflags
2031     host_cppflags
2032 "
2033
2034 # code dependency declarations
2035
2036 # architecture extensions
2037
2038 armv5te_deps="arm"
2039 armv6_deps="arm"
2040 armv6t2_deps="arm"
2041 armv8_deps="aarch64"
2042 neon_deps_any="aarch64 arm"
2043 intrinsics_neon_deps="neon"
2044 vfp_deps_any="aarch64 arm"
2045 vfpv3_deps="vfp"
2046 setend_deps="arm"
2047
2048 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2049
2050 mipsfpu_deps="mips"
2051 mipsdspr1_deps="mips"
2052 mipsdspr2_deps="mips"
2053 mips32r2_deps="mips"
2054 mips32r5_deps="mips"
2055 mips64r6_deps="mips"
2056 msa_deps="mips"
2057 mmi_deps="mips"
2058
2059 altivec_deps="ppc"
2060 dcbzl_deps="ppc"
2061 ldbrx_deps="ppc"
2062 ppc4xx_deps="ppc"
2063 vsx_deps="altivec"
2064 power8_deps="vsx"
2065
2066 cpunop_deps="i686"
2067 x86_64_select="i686"
2068 x86_64_suggest="fast_cmov"
2069
2070 amd3dnow_deps="mmx"
2071 amd3dnowext_deps="amd3dnow"
2072 i686_deps="x86"
2073 mmx_deps="x86"
2074 mmxext_deps="mmx"
2075 sse_deps="mmxext"
2076 sse2_deps="sse"
2077 sse3_deps="sse2"
2078 ssse3_deps="sse3"
2079 sse4_deps="ssse3"
2080 sse42_deps="sse4"
2081 avx_deps="sse42"
2082 xop_deps="avx"
2083 fma3_deps="avx"
2084 fma4_deps="avx"
2085 avx2_deps="avx"
2086
2087 mmx_external_deps="yasm"
2088 mmx_inline_deps="inline_asm"
2089 mmx_suggest="mmx_external mmx_inline"
2090
2091 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2092     eval dep=\$${ext}_deps
2093     eval ${ext}_external_deps='"${dep}_external"'
2094     eval ${ext}_inline_deps='"${dep}_inline"'
2095     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2096 done
2097
2098 aligned_stack_if_any="aarch64 ppc x86"
2099 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2100 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2101 fast_unaligned_if_any="aarch64 ppc x86"
2102 simd_align_16_if_any="altivec neon sse"
2103
2104 # system capabilities
2105 symver_if_any="symver_asm_label symver_gnu_asm"
2106 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2107
2108 # threading support
2109 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2110 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2111 atomics_win32_if="MemoryBarrier"
2112 atomics_native_if_any="$ATOMICS_LIST"
2113 w32threads_deps="atomics_native"
2114 threads_if_any="$THREADS_LIST"
2115
2116 # subsystems
2117 dct_select="rdft"
2118 error_resilience_select="me_cmp"
2119 faandct_deps="faan fdctdsp"
2120 faanidct_deps="faan idctdsp"
2121 frame_thread_encoder_deps="encoders threads"
2122 intrax8_select="error_resilience"
2123 mdct_select="fft"
2124 rdft_select="fft"
2125 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2126 mpeg_er_select="error_resilience"
2127 mpegaudio_select="mpegaudiodsp"
2128 mpegaudiodsp_select="dct"
2129 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2130 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2131 qsvdec_select="qsv"
2132 qsvenc_select="qsv"
2133
2134 # decoders / encoders
2135 aac_decoder_select="imdct15 mdct sinewin"
2136 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2137 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2138 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2139 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2140 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2141 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2142 aic_decoder_select="golomb idctdsp"
2143 alac_encoder_select="lpc"
2144 als_decoder_select="bswapdsp"
2145 amrnb_decoder_select="lsp"
2146 amrwb_decoder_select="lsp"
2147 amv_decoder_select="sp5x_decoder exif"
2148 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2149 ape_decoder_select="bswapdsp llauddsp"
2150 apng_decoder_select="zlib"
2151 apng_encoder_select="huffyuvencdsp zlib"
2152 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2153 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2154 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2155 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2156 atrac1_decoder_select="mdct sinewin"
2157 atrac3_decoder_select="mdct"
2158 atrac3p_decoder_select="mdct sinewin"
2159 avrn_decoder_select="exif jpegtables"
2160 bink_decoder_select="blockdsp hpeldsp"
2161 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2162 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2163 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2164 cllc_decoder_select="bswapdsp"
2165 comfortnoise_encoder_select="lpc"
2166 cook_decoder_select="audiodsp mdct sinewin"
2167 cscd_decoder_select="lzo"
2168 cscd_decoder_suggest="zlib"
2169 dca_decoder_select="fmtconvert mdct"
2170 dds_decoder_select="texturedsp"
2171 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2172 dnxhd_decoder_select="blockdsp idctdsp"
2173 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2174 dvvideo_decoder_select="dvprofile idctdsp"
2175 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2176 dxa_decoder_select="zlib"
2177 eac3_decoder_select="ac3_decoder"
2178 eac3_encoder_select="ac3_encoder"
2179 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2180 eatgq_decoder_select="aandcttables"
2181 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2182 exr_decoder_select="zlib"
2183 ffv1_decoder_select="golomb rangecoder"
2184 ffv1_encoder_select="rangecoder"
2185 ffvhuff_decoder_select="huffyuv_decoder"
2186 ffvhuff_encoder_select="huffyuv_encoder"
2187 fic_decoder_select="golomb"
2188 flac_decoder_select="golomb"
2189 flac_encoder_select="bswapdsp golomb lpc"
2190 flashsv_decoder_select="zlib"
2191 flashsv_encoder_select="zlib"
2192 flashsv2_encoder_select="zlib"
2193 flashsv2_decoder_select="zlib"
2194 flv_decoder_select="h263_decoder"
2195 flv_encoder_select="h263_encoder"
2196 fourxm_decoder_select="blockdsp bswapdsp"
2197 fraps_decoder_select="bswapdsp huffman"
2198 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2199 g729_decoder_select="audiodsp"
2200 h261_decoder_select="mpeg_er mpegvideo"
2201 h261_encoder_select="aandcttables mpegvideoenc"
2202 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2203 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2204 h263i_decoder_select="h263_decoder"
2205 h263p_decoder_select="h263_decoder"
2206 h263p_encoder_select="h263_encoder"
2207 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2208 h264_decoder_suggest="error_resilience"
2209 h264_qsv_decoder_deps="libmfx"
2210 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2211 h264_qsv_encoder_deps="libmfx"
2212 h264_qsv_encoder_select="qsvenc"
2213 hap_decoder_select="snappy texturedsp"
2214 hap_encoder_deps="libsnappy"
2215 hap_encoder_select="texturedspenc"
2216 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2217 hevc_qsv_encoder_select="qsvenc"
2218 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2219 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2220 iac_decoder_select="imc_decoder"
2221 imc_decoder_select="bswapdsp fft mdct sinewin"
2222 indeo3_decoder_select="hpeldsp"
2223 interplay_video_decoder_select="hpeldsp"
2224 jpegls_decoder_select="golomb mjpeg_decoder"
2225 jpegls_encoder_select="golomb"
2226 jv_decoder_select="blockdsp"
2227 lagarith_decoder_select="huffyuvdsp"
2228 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2229 loco_decoder_select="golomb"
2230 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2231 metasound_decoder_select="lsp mdct sinewin"
2232 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2233 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2234 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2235 mjpegb_decoder_select="mjpeg_decoder"
2236 mlp_decoder_select="mlp_parser"
2237 motionpixels_decoder_select="bswapdsp"
2238 mp1_decoder_select="mpegaudio"
2239 mp1float_decoder_select="mpegaudio"
2240 mp2_decoder_select="mpegaudio"
2241 mp2float_decoder_select="mpegaudio"
2242 mp3_decoder_select="mpegaudio"
2243 mp3adu_decoder_select="mpegaudio"
2244 mp3adufloat_decoder_select="mpegaudio"
2245 mp3float_decoder_select="mpegaudio"
2246 mp3on4_decoder_select="mpegaudio"
2247 mp3on4float_decoder_select="mpegaudio"
2248 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2249 mpc8_decoder_select="mpegaudiodsp"
2250 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2251 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2252 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2253 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2254 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2255 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2256 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2257 mpeg2_qsv_encoder_deps="libmfx"
2258 mpeg2_qsv_encoder_select="qsvenc"
2259 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2260 mpeg4_encoder_select="h263_encoder"
2261 msmpeg4v1_decoder_select="h263_decoder"
2262 msmpeg4v2_decoder_select="h263_decoder"
2263 msmpeg4v2_encoder_select="h263_encoder"
2264 msmpeg4v3_decoder_select="h263_decoder"
2265 msmpeg4v3_encoder_select="h263_encoder"
2266 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2267 mxpeg_decoder_select="mjpeg_decoder"
2268 nellymoser_decoder_select="mdct sinewin"
2269 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2270 nuv_decoder_select="idctdsp lzo"
2271 on2avc_decoder_select="mdct"
2272 opus_decoder_deps="swresample"
2273 opus_decoder_select="imdct15"
2274 png_decoder_select="zlib"
2275 png_encoder_select="huffyuvencdsp zlib"
2276 prores_decoder_select="blockdsp idctdsp"
2277 prores_encoder_select="fdctdsp"
2278 qcelp_decoder_select="lsp"
2279 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2280 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2281 ra_144_decoder_select="audiodsp"
2282 ralf_decoder_select="golomb"
2283 rawvideo_decoder_select="bswapdsp"
2284 rtjpeg_decoder_select="me_cmp"
2285 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2286 rv10_encoder_select="h263_encoder"
2287 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2288 rv20_encoder_select="h263_encoder"
2289 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2290 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2291 shorten_decoder_select="golomb"
2292 sipr_decoder_select="lsp"
2293 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2294 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2295 sonic_decoder_select="golomb rangecoder"
2296 sonic_encoder_select="golomb rangecoder"
2297 sonic_ls_encoder_select="golomb rangecoder"
2298 sp5x_decoder_select="mjpeg_decoder"
2299 svq1_decoder_select="hpeldsp"
2300 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2301 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2302 svq3_decoder_suggest="zlib"
2303 tak_decoder_select="audiodsp"
2304 tdsc_decoder_select="zlib mjpeg_decoder"
2305 theora_decoder_select="vp3_decoder"
2306 thp_decoder_select="mjpeg_decoder"
2307 tiff_decoder_suggest="zlib lzma"
2308 tiff_encoder_suggest="zlib"
2309 truehd_decoder_select="mlp_parser"
2310 truemotion2_decoder_select="bswapdsp"
2311 truespeech_decoder_select="bswapdsp"
2312 tscc_decoder_select="zlib"
2313 twinvq_decoder_select="mdct lsp sinewin"
2314 txd_decoder_select="texturedsp"
2315 utvideo_decoder_select="bswapdsp"
2316 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2317 vble_decoder_select="huffyuvdsp"
2318 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2319 vc1image_decoder_select="vc1_decoder"
2320 vorbis_decoder_select="mdct"
2321 vorbis_encoder_select="mdct"
2322 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2323 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2324 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2325 vp6a_decoder_select="vp6_decoder"
2326 vp6f_decoder_select="vp6_decoder"
2327 vp7_decoder_select="h264pred videodsp"
2328 vp8_decoder_select="h264pred videodsp"
2329 vp9_decoder_select="videodsp vp9_parser"
2330 webp_decoder_select="vp8_decoder"
2331 wmalossless_decoder_select="llauddsp"
2332 wmapro_decoder_select="mdct sinewin wma_freqs"
2333 wmav1_decoder_select="mdct sinewin wma_freqs"
2334 wmav1_encoder_select="mdct sinewin wma_freqs"
2335 wmav2_decoder_select="mdct sinewin wma_freqs"
2336 wmav2_encoder_select="mdct sinewin wma_freqs"
2337 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2338 wmv1_decoder_select="h263_decoder"
2339 wmv1_encoder_select="h263_encoder"
2340 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2341 wmv2_encoder_select="h263_encoder"
2342 wmv3_decoder_select="vc1_decoder"
2343 wmv3image_decoder_select="wmv3_decoder"
2344 zerocodec_decoder_select="zlib"
2345 zlib_decoder_select="zlib"
2346 zlib_encoder_select="zlib"
2347 zmbv_decoder_select="zlib"
2348 zmbv_encoder_select="zlib"
2349
2350 # hardware accelerators
2351 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2352 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2353 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2354 vaapi_deps="va_va_h"
2355 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2356 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2357 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2358 xvmc_deps="X11_extensions_XvMClib_h"
2359
2360 h263_vaapi_hwaccel_deps="vaapi"
2361 h263_vaapi_hwaccel_select="h263_decoder"
2362 h263_vdpau_hwaccel_deps="vdpau"
2363 h263_vdpau_hwaccel_select="h263_decoder"
2364 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2365 h264_d3d11va_hwaccel_deps="d3d11va"
2366 h264_d3d11va_hwaccel_select="h264_decoder"
2367 h264_dxva2_hwaccel_deps="dxva2"
2368 h264_dxva2_hwaccel_select="h264_decoder"
2369 h264_mmal_decoder_deps="mmal"
2370 h264_mmal_hwaccel_deps="mmal"
2371 h264_mmal_decoder_select="h264_decoder"
2372 h264_mmal_encoder_deps="mmal"
2373 h264_qsv_hwaccel_deps="libmfx"
2374 h264_vaapi_hwaccel_deps="vaapi"
2375 h264_vaapi_hwaccel_select="h264_decoder"
2376 h264_vda_decoder_deps="vda"
2377 h264_vda_decoder_select="h264_decoder"
2378 h264_vda_hwaccel_deps="vda"
2379 h264_vda_hwaccel_select="h264_decoder"
2380 h264_vda_old_hwaccel_deps="vda"
2381 h264_vda_old_hwaccel_select="h264_decoder"
2382 h264_vdpau_decoder_deps="vdpau"
2383 h264_vdpau_decoder_select="h264_decoder"
2384 h264_vdpau_hwaccel_deps="vdpau"
2385 h264_vdpau_hwaccel_select="h264_decoder"
2386 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2387 hevc_d3d11va_hwaccel_select="hevc_decoder"
2388 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2389 hevc_dxva2_hwaccel_select="hevc_decoder"
2390 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2391 hevc_vdpau_hwaccel_select="hevc_decoder"
2392 mpeg_vdpau_decoder_deps="vdpau"
2393 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2394 mpeg_xvmc_hwaccel_deps="xvmc"
2395 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2396 mpeg1_vdpau_decoder_deps="vdpau"
2397 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2398 mpeg1_vdpau_hwaccel_deps="vdpau"
2399 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2400 mpeg1_xvmc_hwaccel_deps="xvmc"
2401 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2402 mpeg2_crystalhd_decoder_select="crystalhd"
2403 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2404 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2405 mpeg2_dxva2_hwaccel_deps="dxva2"
2406 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2407 mpeg2_vaapi_hwaccel_deps="vaapi"
2408 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2409 mpeg2_vdpau_hwaccel_deps="vdpau"
2410 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2411 mpeg2_xvmc_hwaccel_deps="xvmc"
2412 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2413 mpeg4_crystalhd_decoder_select="crystalhd"
2414 mpeg4_vaapi_hwaccel_deps="vaapi"
2415 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2416 mpeg4_vdpau_decoder_deps="vdpau"
2417 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2418 mpeg4_vdpau_hwaccel_deps="vdpau"
2419 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2420 msmpeg4_crystalhd_decoder_select="crystalhd"
2421 vc1_crystalhd_decoder_select="crystalhd"
2422 vc1_d3d11va_hwaccel_deps="d3d11va"
2423 vc1_d3d11va_hwaccel_select="vc1_decoder"
2424 vc1_dxva2_hwaccel_deps="dxva2"
2425 vc1_dxva2_hwaccel_select="vc1_decoder"
2426 vc1_vaapi_hwaccel_deps="vaapi"
2427 vc1_vaapi_hwaccel_select="vc1_decoder"
2428 vc1_vdpau_decoder_deps="vdpau"
2429 vc1_vdpau_decoder_select="vc1_decoder"
2430 vc1_vdpau_hwaccel_deps="vdpau"
2431 vc1_vdpau_hwaccel_select="vc1_decoder"
2432 wmv3_crystalhd_decoder_select="crystalhd"
2433 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2434 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2435 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2436 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2437 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2438
2439 # parsers
2440 h264_parser_select="h264_decoder"
2441 hevc_parser_select="hevc_decoder"
2442 mpegvideo_parser_select="mpegvideo"
2443 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2444 vc1_parser_select="mpegvideo startcode vc1_decoder"
2445
2446 # bitstream_filters
2447 mjpeg2jpeg_bsf_select="jpegtables"
2448
2449 # external libraries
2450 libaacplus_encoder_deps="libaacplus"
2451 libcelt_decoder_deps="libcelt"
2452 libdcadec_decoder_deps="libdcadec"
2453 libfaac_encoder_deps="libfaac"
2454 libfaac_encoder_select="audio_frame_queue"
2455 libfdk_aac_decoder_deps="libfdk_aac"
2456 libfdk_aac_encoder_deps="libfdk_aac"
2457 libfdk_aac_encoder_select="audio_frame_queue"
2458 libgme_demuxer_deps="libgme"
2459 libgsm_decoder_deps="libgsm"
2460 libgsm_encoder_deps="libgsm"
2461 libgsm_ms_decoder_deps="libgsm"
2462 libgsm_ms_encoder_deps="libgsm"
2463 libilbc_decoder_deps="libilbc"
2464 libilbc_encoder_deps="libilbc"
2465 libmodplug_demuxer_deps="libmodplug"
2466 libmp3lame_encoder_deps="libmp3lame"
2467 libmp3lame_encoder_select="audio_frame_queue"
2468 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2469 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2470 libopencore_amrnb_encoder_select="audio_frame_queue"
2471 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2472 libopenh264_encoder_deps="libopenh264"
2473 libopenjpeg_decoder_deps="libopenjpeg"
2474 libopenjpeg_encoder_deps="libopenjpeg"
2475 libopus_decoder_deps="libopus"
2476 libopus_encoder_deps="libopus"
2477 libopus_encoder_select="audio_frame_queue"
2478 libquvi_demuxer_deps="libquvi"
2479 libschroedinger_decoder_deps="libschroedinger"
2480 libschroedinger_encoder_deps="libschroedinger"
2481 libshine_encoder_deps="libshine"
2482 libshine_encoder_select="audio_frame_queue"
2483 libspeex_decoder_deps="libspeex"
2484 libspeex_encoder_deps="libspeex"
2485 libspeex_encoder_select="audio_frame_queue"
2486 libstagefright_h264_decoder_deps="libstagefright_h264"
2487 libtheora_encoder_deps="libtheora"
2488 libtwolame_encoder_deps="libtwolame"
2489 libvo_aacenc_encoder_deps="libvo_aacenc"
2490 libvo_aacenc_encoder_select="audio_frame_queue"
2491 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2492 libvorbis_decoder_deps="libvorbis"
2493 libvorbis_encoder_deps="libvorbis"
2494 libvorbis_encoder_select="audio_frame_queue"
2495 libvpx_vp8_decoder_deps="libvpx"
2496 libvpx_vp8_encoder_deps="libvpx"
2497 libvpx_vp9_decoder_deps="libvpx"
2498 libvpx_vp9_encoder_deps="libvpx"
2499 libwavpack_encoder_deps="libwavpack"
2500 libwebp_encoder_deps="libwebp"
2501 libwebp_anim_encoder_deps="libwebp"
2502 libx264_encoder_deps="libx264"
2503 libx264rgb_encoder_deps="libx264"
2504 libx264rgb_encoder_select="libx264_encoder"
2505 libx265_encoder_deps="libx265"
2506 libxavs_encoder_deps="libxavs"
2507 libxvid_encoder_deps="libxvid"
2508 libutvideo_decoder_deps="libutvideo"
2509 libutvideo_encoder_deps="libutvideo"
2510 libzvbi_teletext_decoder_deps="libzvbi"
2511 nvenc_encoder_deps="nvenc"
2512 nvenc_h264_encoder_deps="nvenc"
2513 nvenc_hevc_encoder_deps="nvenc"
2514
2515 # demuxers / muxers
2516 ac3_demuxer_select="ac3_parser"
2517 asf_demuxer_select="riffdec"
2518 asf_o_demuxer_select="riffdec"
2519 asf_muxer_select="riffenc"
2520 asf_stream_muxer_select="asf_muxer"
2521 avi_demuxer_select="riffdec exif"
2522 avi_muxer_select="riffenc"
2523 avisynth_demuxer_deps="avisynth"
2524 avisynth_demuxer_select="riffdec"
2525 caf_demuxer_select="riffdec"
2526 dash_muxer_select="mp4_muxer"
2527 dirac_demuxer_select="dirac_parser"
2528 dts_demuxer_select="dca_parser"
2529 dtshd_demuxer_select="dca_parser"
2530 dv_demuxer_select="dvprofile"
2531 dv_muxer_select="dvprofile"
2532 dxa_demuxer_select="riffdec"
2533 eac3_demuxer_select="ac3_parser"
2534 f4v_muxer_select="mov_muxer"
2535 flac_demuxer_select="flac_parser"
2536 hds_muxer_select="flv_muxer"
2537 hls_muxer_select="mpegts_muxer"
2538 image2_alias_pix_demuxer_select="image2_demuxer"
2539 image2_brender_pix_demuxer_select="image2_demuxer"
2540 ipod_muxer_select="mov_muxer"
2541 ismv_muxer_select="mov_muxer"
2542 libnut_demuxer_deps="libnut"
2543 libnut_muxer_deps="libnut"
2544 matroska_audio_muxer_select="matroska_muxer"
2545 matroska_demuxer_select="riffdec"
2546 matroska_demuxer_suggest="bzlib lzo zlib"
2547 matroska_muxer_select="riffenc"
2548 mmf_muxer_select="riffenc"
2549 mov_demuxer_select="riffdec"
2550 mov_demuxer_suggest="zlib"
2551 mov_muxer_select="riffenc rtpenc_chain"
2552 mp3_demuxer_select="mpegaudio_parser"
2553 mp4_muxer_select="mov_muxer"
2554 mpegts_muxer_select="adts_muxer latm_muxer"
2555 mpegtsraw_demuxer_select="mpegts_demuxer"
2556 mxf_d10_muxer_select="mxf_muxer"
2557 mxf_opatom_muxer_select="mxf_muxer"
2558 nut_muxer_select="riffenc"
2559 nuv_demuxer_select="riffdec"
2560 oga_muxer_select="ogg_muxer"
2561 ogg_demuxer_select="golomb"
2562 opus_muxer_select="ogg_muxer"
2563 psp_muxer_select="mov_muxer"
2564 rtp_demuxer_select="sdp_demuxer"
2565 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2566 rtsp_demuxer_select="http_protocol rtpdec"
2567 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2568 sap_demuxer_select="sdp_demuxer"
2569 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2570 sdp_demuxer_select="rtpdec"
2571 smoothstreaming_muxer_select="ismv_muxer"
2572 spdif_muxer_select="aac_parser"
2573 spx_muxer_select="ogg_muxer"
2574 tak_demuxer_select="tak_parser"
2575 tg2_muxer_select="mov_muxer"
2576 tgp_muxer_select="mov_muxer"
2577 vobsub_demuxer_select="mpegps_demuxer"
2578 w64_demuxer_select="wav_demuxer"
2579 w64_muxer_select="wav_muxer"
2580 wav_demuxer_select="riffdec"
2581 wav_muxer_select="riffenc"
2582 webm_muxer_select="riffenc"
2583 wtv_demuxer_select="riffdec"
2584 wtv_muxer_select="riffenc"
2585 xmv_demuxer_select="riffdec"
2586 xwma_demuxer_select="riffdec"
2587
2588 # indevs / outdevs
2589 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2590 alsa_outdev_deps="alsa_asoundlib_h"
2591 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2592 avfoundation_indev_select="avfoundation"
2593 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2594 caca_outdev_deps="libcaca"
2595 decklink_outdev_deps="decklink pthreads"
2596 decklink_outdev_extralibs="-lstdc++"
2597 decklink_indev_deps="decklink pthreads"
2598 decklink_indev_extralibs="-lstdc++"
2599 dshow_indev_deps="IBaseFilter"
2600 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2601 dv1394_indev_deps="dv1394"
2602 dv1394_indev_select="dv_demuxer"
2603 fbdev_indev_deps="linux_fb_h"
2604 fbdev_outdev_deps="linux_fb_h"
2605 gdigrab_indev_deps="CreateDIBSection"
2606 gdigrab_indev_extralibs="-lgdi32"
2607 gdigrab_indev_select="bmp_decoder"
2608 iec61883_indev_deps="libiec61883"
2609 jack_indev_deps="jack_jack_h sem_timedwait"
2610 lavfi_indev_deps="avfilter"
2611 libcdio_indev_deps="libcdio"
2612 libdc1394_indev_deps="libdc1394"
2613 libv4l2_indev_deps="libv4l2"
2614 openal_indev_deps="openal"
2615 opengl_outdev_deps="opengl"
2616 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2617 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2618 pulse_indev_deps="libpulse"
2619 pulse_outdev_deps="libpulse"
2620 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2621 qtkit_indev_select="qtkit"
2622 sdl_outdev_deps="sdl"
2623 sndio_indev_deps="sndio_h"
2624 sndio_outdev_deps="sndio_h"
2625 v4l_indev_deps="linux_videodev_h"
2626 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2627 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2628 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2629 vfwcap_indev_extralibs="-lavicap32"
2630 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2631 xv_outdev_extralibs="-lXv -lX11 -lXext"
2632 x11grab_indev_deps="x11grab"
2633 x11grab_xcb_indev_deps="libxcb"
2634
2635 # protocols
2636 bluray_protocol_deps="libbluray"
2637 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2638 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2639 ffrtmpcrypt_protocol_select="tcp_protocol"
2640 ffrtmphttp_protocol_deps="!librtmp_protocol"
2641 ffrtmphttp_protocol_select="http_protocol"
2642 ftp_protocol_select="tcp_protocol"
2643 gopher_protocol_select="network"
2644 http_protocol_select="tcp_protocol"
2645 httpproxy_protocol_select="tcp_protocol"
2646 https_protocol_select="tls_protocol"
2647 icecast_protocol_select="http_protocol"
2648 librtmp_protocol_deps="librtmp"
2649 librtmpe_protocol_deps="librtmp"
2650 librtmps_protocol_deps="librtmp"
2651 librtmpt_protocol_deps="librtmp"
2652 librtmpte_protocol_deps="librtmp"
2653 libsmbclient_protocol_deps="libsmbclient gplv3"
2654 libssh_protocol_deps="libssh"
2655 mmsh_protocol_select="http_protocol"
2656 mmst_protocol_select="network"
2657 rtmp_protocol_deps="!librtmp_protocol"
2658 rtmp_protocol_select="tcp_protocol"
2659 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2660 rtmps_protocol_deps="!librtmp_protocol"
2661 rtmps_protocol_select="tls_protocol"
2662 rtmpt_protocol_select="ffrtmphttp_protocol"
2663 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2664 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2665 rtp_protocol_select="udp_protocol"
2666 sctp_protocol_deps="struct_sctp_event_subscribe"
2667 sctp_protocol_select="network"
2668 srtp_protocol_select="rtp_protocol"
2669 tcp_protocol_select="network"
2670 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2671 tls_gnutls_protocol_select="tcp_protocol"
2672 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2673 tls_openssl_protocol_select="tcp_protocol"
2674 tls_securetransport_protocol_deps="securetransport"
2675 tls_securetransport_protocol_select="tcp_protocol"
2676 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2677 udp_protocol_select="network"
2678 udplite_protocol_select="network"
2679 unix_protocol_deps="sys_un_h"
2680 unix_protocol_select="network"
2681
2682 # filters
2683 amovie_filter_deps="avcodec avformat"
2684 aresample_filter_deps="swresample"
2685 ass_filter_deps="libass"
2686 asyncts_filter_deps="avresample"
2687 atempo_filter_deps="avcodec"
2688 atempo_filter_select="rdft"
2689 azmq_filter_deps="libzmq"
2690 blackframe_filter_deps="gpl"
2691 boxblur_filter_deps="gpl"
2692 bs2b_filter_deps="libbs2b"
2693 colormatrix_filter_deps="gpl"
2694 cover_rect_filter_deps="avcodec avformat gpl"
2695 cropdetect_filter_deps="gpl"
2696 delogo_filter_deps="gpl"
2697 deshake_filter_select="pixelutils"
2698 drawtext_filter_deps="libfreetype"
2699 ebur128_filter_deps="gpl"
2700 eq_filter_deps="gpl"
2701 fftfilt_filter_deps="avcodec"
2702 fftfilt_filter_select="rdft"
2703 flite_filter_deps="libflite"
2704 find_rect_filter_deps="avcodec avformat gpl"
2705 frei0r_filter_deps="frei0r dlopen"
2706 frei0r_src_filter_deps="frei0r dlopen"
2707 fspp_filter_deps="gpl"
2708 geq_filter_deps="gpl"
2709 histeq_filter_deps="gpl"
2710 hqdn3d_filter_deps="gpl"
2711 interlace_filter_deps="gpl"
2712 kerndeint_filter_deps="gpl"
2713 ladspa_filter_deps="ladspa dlopen"
2714 mcdeint_filter_deps="avcodec gpl"
2715 movie_filter_deps="avcodec avformat"
2716 mpdecimate_filter_deps="gpl"
2717 mpdecimate_filter_select="pixelutils"
2718 mptestsrc_filter_deps="gpl"
2719 negate_filter_deps="lut_filter"
2720 perspective_filter_deps="gpl"
2721 pp7_filter_deps="gpl"
2722 ocv_filter_deps="libopencv"
2723 owdenoise_filter_deps="gpl"
2724 pan_filter_deps="swresample"
2725 phase_filter_deps="gpl"
2726 pp_filter_deps="gpl postproc"
2727 pullup_filter_deps="gpl"
2728 removelogo_filter_deps="avcodec avformat swscale"
2729 repeatfields_filter_deps="gpl"
2730 resample_filter_deps="avresample"
2731 sab_filter_deps="gpl swscale"
2732 scale_filter_deps="swscale"
2733 select_filter_select="pixelutils"
2734 smartblur_filter_deps="gpl swscale"
2735 showcqt_filter_deps="avcodec"
2736 showcqt_filter_select="fft"
2737 showspectrum_filter_deps="avcodec"
2738 showspectrum_filter_select="rdft"
2739 spp_filter_deps="gpl avcodec"
2740 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2741 stereo3d_filter_deps="gpl"
2742 subtitles_filter_deps="avformat avcodec libass"
2743 super2xsai_filter_deps="gpl"
2744 tinterlace_filter_deps="gpl"
2745 vidstabdetect_filter_deps="libvidstab"
2746 vidstabtransform_filter_deps="libvidstab"
2747 pixfmts_super2xsai_test_deps="super2xsai_filter"
2748 tinterlace_merge_test_deps="tinterlace_filter"
2749 tinterlace_pad_test_deps="tinterlace_filter"
2750 uspp_filter_deps="gpl avcodec"
2751 zmq_filter_deps="libzmq"
2752 zoompan_filter_deps="swscale"
2753
2754 # examples
2755 avio_reading="avformat avcodec avutil"
2756 avio_list_dir="avformat avutil"
2757 avcodec_example_deps="avcodec avutil"
2758 decoding_encoding_example_deps="avcodec avformat avutil"
2759 demuxing_decoding_example_deps="avcodec avformat avutil"
2760 extract_mvs_example_deps="avcodec avformat avutil"
2761 filter_audio_example_deps="avfilter avutil"
2762 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2763 filtering_video_example_deps="avfilter avcodec avformat avutil"
2764 metadata_example_deps="avformat avutil"
2765 muxing_example_deps="avcodec avformat avutil swscale"
2766 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2767 remuxing_example_deps="avcodec avformat avutil"
2768 resampling_audio_example_deps="avutil swresample"
2769 scaling_video_example_deps="avutil swscale"
2770 transcode_aac_example_deps="avcodec avformat swresample"
2771 transcoding_example_deps="avfilter avcodec avformat avutil"
2772
2773 # libraries, in linking order
2774 avcodec_deps="avutil"
2775 avdevice_deps="avformat avcodec avutil"
2776 avfilter_deps="avutil"
2777 avformat_deps="avcodec avutil"
2778 avresample_deps="avutil"
2779 postproc_deps="avutil gpl"
2780 swresample_deps="avutil"
2781 swscale_deps="avutil"
2782
2783 # programs
2784 ffmpeg_deps="avcodec avfilter avformat swresample"
2785 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2786                null_filter
2787                setpts_filter trim_filter"
2788 ffplay_deps="avcodec avformat swscale swresample sdl"
2789 ffplay_libs='$sdl_libs'
2790 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2791 ffprobe_deps="avcodec avformat"
2792 ffserver_deps="avformat fork sarestart"
2793 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2794
2795 # documentation
2796 podpages_deps="perl"
2797 manpages_deps="perl pod2man"
2798 htmlpages_deps="perl"
2799 htmlpages_deps_any="makeinfo_html texi2html"
2800 txtpages_deps="perl makeinfo"
2801 doc_deps_any="manpages htmlpages podpages txtpages"
2802
2803 # default parameters
2804
2805 logfile="config.log"
2806
2807 # installation paths
2808 prefix_default="/usr/local"
2809 bindir_default='${prefix}/bin'
2810 datadir_default='${prefix}/share/ffmpeg'
2811 docdir_default='${prefix}/share/doc/ffmpeg'
2812 incdir_default='${prefix}/include'
2813 libdir_default='${prefix}/lib'
2814 mandir_default='${prefix}/share/man'
2815
2816 # toolchain
2817 ar_default="ar"
2818 cc_default="gcc"
2819 cxx_default="g++"
2820 host_cc_default="gcc"
2821 cp_f="cp -f"
2822 doxygen_default="doxygen"
2823 install="install"
2824 ln_s="ln -s -f"
2825 nm_default="nm -g"
2826 objformat="elf"
2827 pkg_config_default=pkg-config
2828 ranlib_default="ranlib"
2829 strip_default="strip"
2830 yasmexe_default="yasm"
2831 windres_default="windres"
2832
2833 # OS
2834 target_os_default=$(tolower $(uname -s))
2835 host_os=$target_os_default
2836
2837 # machine
2838 if test "$target_os_default" = aix; then
2839     arch_default=$(uname -p)
2840     strip_default="strip -X32_64"
2841 else
2842     arch_default=$(uname -m)
2843 fi
2844 cpu="generic"
2845 intrinsics="none"
2846
2847 # configurable options
2848 enable $PROGRAM_LIST
2849 enable $DOCUMENT_LIST
2850 enable $EXAMPLE_LIST
2851 enable $(filter_out avresample $LIBRARY_LIST)
2852 enable stripping
2853
2854 enable asm
2855 enable debug
2856 enable doc
2857 enable faan faandct faanidct
2858 enable optimizations
2859 enable runtime_cpudetect
2860 enable safe_bitstream_reader
2861 enable static
2862 enable swscale_alpha
2863 enable valgrind_backtrace
2864
2865 sws_max_filter_size_default=256
2866 set_default sws_max_filter_size
2867
2868 # Enable hwaccels by default.
2869 enable d3d11va dxva2 vaapi vda vdpau xvmc
2870 enable xlib
2871
2872 # build settings
2873 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2874 LIBPREF="lib"
2875 LIBSUF=".a"
2876 FULLNAME='$(NAME)$(BUILDSUF)'
2877 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2878 SLIBPREF="lib"
2879 SLIBSUF=".so"
2880 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2881 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2882 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2883 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2884 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2885 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2886
2887 asflags_filter=echo
2888 cflags_filter=echo
2889 ldflags_filter=echo
2890
2891 AS_C='-c'
2892 AS_O='-o $@'
2893 CC_C='-c'
2894 CC_E='-E -o $@'
2895 CC_O='-o $@'
2896 CXX_C='-c'
2897 CXX_O='-o $@'
2898 LD_O='-o $@'
2899 LD_LIB='-l%'
2900 LD_PATH='-L'
2901 HOSTCC_C='-c'
2902 HOSTCC_E='-E -o $@'
2903 HOSTCC_O='-o $@'
2904 HOSTLD_O='-o $@'
2905
2906 host_libs='-lm'
2907 host_cflags_filter=echo
2908 host_ldflags_filter=echo
2909
2910 target_path='$(CURDIR)'
2911
2912 # since the object filename is not given with the -MM flag, the compiler
2913 # is only able to print the basename, and we must add the path ourselves
2914 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2915 DEPFLAGS='-MM'
2916
2917 # find source path
2918 if test -f configure; then
2919     source_path=.
2920 else
2921     source_path=$(cd $(dirname "$0"); pwd)
2922     echo "$source_path" | grep -q '[[:blank:]]' &&
2923         die "Out of tree builds are impossible with whitespace in source path."
2924     test -e "$source_path/config.h" &&
2925         die "Out of tree builds are impossible with config.h in source dir."
2926 fi
2927
2928 for v in "$@"; do
2929     r=${v#*=}
2930     l=${v%"$r"}
2931     r=$(sh_quote "$r")
2932     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2933 done
2934
2935 find_things(){
2936     thing=$1
2937     pattern=$2
2938     file=$source_path/$3
2939     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2940 }
2941
2942 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2943 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2944 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2945 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2946 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2947 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2948 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2949 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2950 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2951 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2952 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2953
2954 ALL_COMPONENTS="
2955     $BSF_LIST
2956     $DECODER_LIST
2957     $DEMUXER_LIST
2958     $ENCODER_LIST
2959     $FILTER_LIST
2960     $HWACCEL_LIST
2961     $INDEV_LIST
2962     $MUXER_LIST
2963     $OUTDEV_LIST
2964     $PARSER_LIST
2965     $PROTOCOL_LIST
2966 "
2967
2968 for n in $COMPONENT_LIST; do
2969     v=$(toupper ${n%s})_LIST
2970     eval enable \$$v
2971     eval ${n}_if_any="\$$v"
2972 done
2973
2974 enable $ARCH_EXT_LIST
2975
2976 die_unknown(){
2977     echo "Unknown option \"$1\"."
2978     echo "See $0 --help for available options."
2979     exit 1
2980 }
2981
2982 print_3_columns() {
2983     cat | tr ' ' '\n' | sort | pr -r -3 -t
2984 }
2985
2986 show_list() {
2987     suffix=_$1
2988     shift
2989     echo $* | sed s/$suffix//g | print_3_columns
2990     exit 0
2991 }
2992
2993 rand_list(){
2994     IFS=', '
2995     set -- $*
2996     unset IFS
2997     for thing; do
2998         comp=${thing%:*}
2999         prob=${thing#$comp}
3000         prob=${prob#:}
3001         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3002         echo "prob ${prob:-0.5}"
3003         printf '%s\n' $comp
3004     done
3005 }
3006
3007 do_random(){
3008     action=$1
3009     shift
3010     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3011     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3012 }
3013
3014 for opt do
3015     optval="${opt#*=}"
3016     case "$opt" in
3017         --extra-ldflags=*)
3018             add_ldflags $optval
3019         ;;
3020         --extra-ldexeflags=*)
3021             add_ldexeflags $optval
3022         ;;
3023         --extra-ldlibflags=*)
3024             add_ldlibflags $optval
3025         ;;
3026         --extra-libs=*)
3027             add_extralibs $optval
3028         ;;
3029         --disable-devices)
3030             disable $INDEV_LIST $OUTDEV_LIST
3031         ;;
3032         --enable-debug=*)
3033             debuglevel="$optval"
3034         ;;
3035         --disable-programs)
3036             disable $PROGRAM_LIST
3037         ;;
3038         --disable-everything)
3039             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3040         ;;
3041         --disable-all)
3042             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3043             disable $LIBRARY_LIST $PROGRAM_LIST doc
3044         ;;
3045         --enable-random|--disable-random)
3046             action=${opt%%-random}
3047             do_random ${action#--} $COMPONENT_LIST
3048         ;;
3049         --enable-random=*|--disable-random=*)
3050             action=${opt%%-random=*}
3051             do_random ${action#--} $optval
3052         ;;
3053         --enable-*=*|--disable-*=*)
3054             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3055             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3056             eval list=\$$(toupper $thing)_LIST
3057             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3058             list=$(filter "$name" $list)
3059             [ "$list" = "" ] && warn "Option $opt did not match anything"
3060             $action $list
3061         ;;
3062         --enable-?*|--disable-?*)
3063             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3064             if is_in $option $COMPONENT_LIST; then
3065                 test $action = disable && action=unset
3066                 eval $action \$$(toupper ${option%s})_LIST
3067             elif is_in $option $CMDLINE_SELECT; then
3068                 $action $option
3069             else
3070                 die_unknown $opt
3071             fi
3072         ;;
3073         --list-*)
3074             NAME="${opt#--list-}"
3075             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3076             NAME=${NAME%s}
3077             eval show_list $NAME \$$(toupper $NAME)_LIST
3078         ;;
3079         --help|-h) show_help
3080         ;;
3081         --fatal-warnings) enable fatal_warnings
3082         ;;
3083         *)
3084             optname="${opt%%=*}"
3085             optname="${optname#--}"
3086             optname=$(echo "$optname" | sed 's/-/_/g')
3087             if is_in $optname $CMDLINE_SET; then
3088                 eval $optname='$optval'
3089             elif is_in $optname $CMDLINE_APPEND; then
3090                 append $optname "$optval"
3091             else
3092                 die_unknown $opt
3093             fi
3094         ;;
3095     esac
3096 done
3097
3098 for e in $env; do
3099     eval "export $e"
3100 done
3101
3102 disabled logging && logfile=/dev/null
3103
3104 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3105 set >> $logfile
3106
3107 test -n "$valgrind" && toolchain="valgrind-memcheck"
3108
3109 case "$toolchain" in
3110     clang-asan)
3111         cc_default="clang"
3112         add_cflags  -fsanitize=address
3113         add_ldflags -fsanitize=address
3114     ;;
3115     clang-tsan)
3116         cc_default="clang"
3117         add_cflags  -fsanitize=thread -pie
3118         add_ldflags -fsanitize=thread -pie
3119     ;;
3120     clang-usan)
3121         cc_default="clang"
3122         add_cflags  -fsanitize=undefined
3123         add_ldflags -fsanitize=undefined
3124     ;;
3125     gcc-asan)
3126         cc_default="gcc"
3127         add_cflags  -fsanitize=address
3128         add_ldflags -fsanitize=address
3129     ;;
3130     gcc-tsan)
3131         cc_default="gcc"
3132         add_cflags  -fsanitize=thread -pie -fPIC
3133         add_ldflags -fsanitize=thread -pie -fPIC
3134     ;;
3135     gcc-usan)
3136         cc_default="gcc"
3137         add_cflags  -fsanitize=undefined
3138         add_ldflags -fsanitize=undefined
3139     ;;
3140     valgrind-massif)
3141         target_exec_default=${valgrind:-"valgrind"}
3142         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"
3143     ;;
3144     valgrind-memcheck)
3145         target_exec_default=${valgrind:-"valgrind"}
3146         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3147     ;;
3148     msvc)
3149         # Check whether the current MSVC version needs the C99 converter.
3150         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3151         # support enough of C99 to build ffmpeg. Default to the new
3152         # behaviour if the regexp was unable to match anything, since this
3153         # successfully parses the version number of existing supported
3154         # versions that require the converter (MSVC 2010 and 2012).
3155         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3156         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3157             cc_default="cl"
3158         else
3159             cc_default="c99wrap cl"
3160         fi
3161         ld_default="link"
3162         nm_default="dumpbin -symbols"
3163         ar_default="lib"
3164         target_os_default="win32"
3165         # Use a relative path for TMPDIR. This makes sure all the
3166         # ffconf temp files are written with a relative path, avoiding
3167         # issues with msys/win32 path conversion for MSVC parameters
3168         # such as -Fo<file> or -out:<file>.
3169         TMPDIR=.
3170     ;;
3171     icl)
3172         cc_default="icl"
3173         ld_default="xilink"
3174         nm_default="dumpbin -symbols"
3175         ar_default="xilib"
3176         target_os_default="win32"
3177         TMPDIR=.
3178     ;;
3179     gcov)
3180         add_cflags  -fprofile-arcs -ftest-coverage
3181         add_ldflags -fprofile-arcs -ftest-coverage
3182     ;;
3183     hardened)
3184         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3185         add_cflags   -fno-strict-overflow -fstack-protector-all
3186         add_ldflags  -Wl,-z,relro -Wl,-z,now
3187     ;;
3188     ?*)
3189         die "Unknown toolchain $toolchain"
3190     ;;
3191 esac
3192
3193 test -n "$cross_prefix" && enable cross_compile
3194
3195 if enabled cross_compile; then
3196     test -n "$arch" && test -n "$target_os" ||
3197         die "Must specify target arch and OS when cross-compiling"
3198 fi
3199
3200 ar_default="${cross_prefix}${ar_default}"
3201 cc_default="${cross_prefix}${cc_default}"
3202 cxx_default="${cross_prefix}${cxx_default}"
3203 nm_default="${cross_prefix}${nm_default}"
3204 pkg_config_default="${cross_prefix}${pkg_config_default}"
3205 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3206     ranlib_default="${cross_prefix}${ranlib_default} -D"
3207 else
3208     ranlib_default="${cross_prefix}${ranlib_default}"
3209 fi
3210 strip_default="${cross_prefix}${strip_default}"
3211 windres_default="${cross_prefix}${windres_default}"
3212
3213 sysinclude_default="${sysroot}/usr/include"
3214
3215 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3216     target_exec target_os yasmexe
3217 enabled cross_compile || host_cc_default=$cc
3218 set_default host_cc
3219
3220 pkg_config_fail_message=""
3221 if ! $pkg_config --version >/dev/null 2>&1; then
3222     warn "$pkg_config not found, library detection may fail."
3223     pkg_config=false
3224 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3225     pkg_config_fail_message="
3226 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3227 fi
3228
3229 if test $doxygen != $doxygen_default && \
3230   ! $doxygen --version >/dev/null 2>&1; then
3231     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3232 fi
3233
3234 exesuf() {
3235     case $1 in
3236         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3237     esac
3238 }
3239
3240 EXESUF=$(exesuf $target_os)
3241 HOSTEXESUF=$(exesuf $host_os)
3242
3243 # set temporary file name
3244 : ${TMPDIR:=$TEMPDIR}
3245 : ${TMPDIR:=$TMP}
3246 : ${TMPDIR:=/tmp}
3247
3248 if [ -n "$tempprefix" ] ; then
3249     mktemp(){
3250         echo $tempprefix.${HOSTNAME}.${UID}
3251     }
3252 elif ! check_cmd mktemp -u XXXXXX; then
3253     # simple replacement for missing mktemp
3254     # NOT SAFE FOR GENERAL USE
3255     mktemp(){
3256         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3257     }
3258 fi
3259
3260 tmpfile(){
3261     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3262         (set -C; exec > $tmp) 2>/dev/null ||
3263         die "Unable to create temporary file in $TMPDIR."
3264     append TMPFILES $tmp
3265     eval $1=$tmp
3266 }
3267
3268 trap 'rm -f -- $TMPFILES' EXIT
3269
3270 tmpfile TMPASM .asm
3271 tmpfile TMPC   .c
3272 tmpfile TMPCPP .cpp
3273 tmpfile TMPE   $EXESUF
3274 tmpfile TMPH   .h
3275 tmpfile TMPM   .m
3276 tmpfile TMPO   .o
3277 tmpfile TMPS   .S
3278 tmpfile TMPSH  .sh
3279 tmpfile TMPV   .ver
3280
3281 unset -f mktemp
3282
3283 chmod +x $TMPE
3284
3285 # make sure we can execute files in $TMPDIR
3286 cat > $TMPSH 2>> $logfile <<EOF
3287 #! /bin/sh
3288 EOF
3289 chmod +x $TMPSH >> $logfile 2>&1
3290 if ! $TMPSH >> $logfile 2>&1; then
3291     cat <<EOF
3292 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3293 variable to another directory and make sure that it is not mounted noexec.
3294 EOF
3295     die "Sanity test failed."
3296 fi
3297
3298 armasm_flags(){
3299     for flag; do
3300         case $flag in
3301             # Filter out MSVC cl.exe options from cflags that shouldn't
3302             # be passed to gas-preprocessor
3303             -M[TD]*)                                            ;;
3304             *)                  echo $flag                      ;;
3305         esac
3306    done
3307 }
3308
3309 ccc_flags(){
3310     for flag; do
3311         case $flag in
3312             -std=c99)           echo -c99                       ;;
3313             -mcpu=*)            echo -arch ${flag#*=}           ;;
3314             -mieee)             echo -ieee                      ;;
3315             -O*|-fast)          echo $flag                      ;;
3316             -fno-math-errno)    echo -assume nomath_errno       ;;
3317             -g)                 echo -g3                        ;;
3318             -Wall)              echo -msg_enable level2         ;;
3319             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3320             -Wl,*)              echo $flag                      ;;
3321             -f*|-W*)                                            ;;
3322             *)                  echo $flag                      ;;
3323         esac
3324    done
3325 }
3326
3327 cparser_flags(){
3328     for flag; do
3329         case $flag in
3330             -Wno-switch)             echo -Wno-switch-enum ;;
3331             -Wno-format-zero-length) ;;
3332             -Wdisabled-optimization) ;;
3333             -Wno-pointer-sign)       echo -Wno-other ;;
3334             *)                       echo $flag ;;
3335         esac
3336     done
3337 }
3338
3339 msvc_common_flags(){
3340     for flag; do
3341         case $flag in
3342             # In addition to specifying certain flags under the compiler
3343             # specific filters, they must be specified here as well or else the
3344             # generic catch all at the bottom will print the original flag.
3345             -Wall)                ;;
3346             -std=c99)             ;;
3347             # Common flags
3348             -fomit-frame-pointer) ;;
3349             -g)                   echo -Z7 ;;
3350             -fno-math-errno)      ;;
3351             -fno-common)          ;;
3352             -fno-signed-zeros)    ;;
3353             -fPIC)                ;;
3354             -mthumb)              ;;
3355             -march=*)             ;;
3356             -lz)                  echo zlib.lib ;;
3357             -lavifil32)           echo vfw32.lib ;;
3358             -lavicap32)           echo vfw32.lib user32.lib ;;
3359             -l*)                  echo ${flag#-l}.lib ;;
3360             -L*)                  echo -libpath:${flag#-L} ;;
3361             *)                    echo $flag ;;
3362         esac
3363     done
3364 }
3365
3366 msvc_flags(){
3367     msvc_common_flags "$@"
3368     for flag; do
3369         case $flag in
3370             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3371                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3372                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3373                                        -wd4307 \
3374                                        -wd4273 -wd4554 -wd4701 ;;
3375         esac
3376     done
3377 }
3378
3379 icl_flags(){
3380     msvc_common_flags "$@"
3381     for flag; do
3382         case $flag in
3383             # Despite what Intel's documentation says -Wall, which is supported
3384             # on Windows, does enable remarks so disable them here.
3385             -Wall)                echo $flag -Qdiag-disable:remark ;;
3386             -std=c99)             echo -Qstd=c99 ;;
3387             -flto)                echo -ipo ;;
3388         esac
3389     done
3390 }
3391
3392 icc_flags(){
3393     for flag; do
3394         case $flag in
3395             -flto)                echo -ipo ;;
3396             *)                    echo $flag ;;
3397         esac
3398     done
3399 }
3400
3401 pgi_flags(){
3402     for flag; do
3403         case $flag in
3404             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3405             -fomit-frame-pointer) echo -Mnoframe ;;
3406             -g)                   echo -gopt ;;
3407             *)                    echo $flag ;;
3408         esac
3409     done
3410 }
3411
3412 suncc_flags(){
3413     for flag; do
3414         case $flag in
3415             -march=*|-mcpu=*)
3416                 case "${flag#*=}" in
3417                     native)                   echo -xtarget=native       ;;
3418                     v9|niagara)               echo -xarch=sparc          ;;
3419                     ultrasparc)               echo -xarch=sparcvis       ;;
3420                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3421                     i586|pentium)             echo -xchip=pentium        ;;
3422                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3423                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3424                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3425                     pentium4*)          echo -xtarget=pentium4           ;;
3426                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3427                     *-sse3)             echo -xarch=sse3                 ;;
3428                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3429                     bonnell)                   echo -xarch=ssse3         ;;
3430                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3431                     westmere)                  echo -xtarget=westmere    ;;
3432                     silvermont)                echo -xarch=sse4_2        ;;
3433                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3434                     core-avx*|ivybridge|haswell|broadwell)
3435                                                echo -xarch=avx           ;;
3436                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3437                     btver1)                    echo -xarch=amdsse4a      ;;
3438                     btver2|bdver*)             echo -xarch=avx           ;;
3439                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3440                     k8|opteron|athlon64|athlon-fx)
3441                                                echo -xarch=sse2a         ;;
3442                     athlon*)                   echo -xarch=pentium_proa  ;;
3443                 esac
3444                 ;;
3445             -std=c99)             echo -xc99              ;;
3446             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3447             -fPIC)                echo -KPIC -xcode=pic32 ;;
3448             -W*,*)                echo $flag              ;;
3449             -f*-*|-W*|-mimpure-text)                      ;;
3450             -shared)              echo -G                 ;;
3451             *)                    echo $flag              ;;
3452         esac
3453     done
3454 }
3455
3456 tms470_flags(){
3457     for flag; do
3458         case $flag in
3459             -march=*|-mcpu=*)
3460                 case "${flag#*=}" in
3461                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3462                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3463                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3464                     armv6*|arm11*)          echo -mv=6   ;;
3465                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3466                                             echo -mv=5e  ;;
3467                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3468                 esac
3469                 ;;
3470             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3471             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3472             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3473             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3474             -msoft-float)   echo --float_support=vfplib       ;;
3475             -O[0-3]|-mf=*)  echo $flag                        ;;
3476             -g)             echo -g -mn                       ;;
3477             -pds=*)         echo $flag                        ;;
3478             -D*|-I*)        echo $flag                        ;;
3479             --gcc|--abi=*)  echo $flag                        ;;
3480             -me)            echo $flag                        ;;
3481         esac
3482     done
3483 }
3484
3485 probe_cc(){
3486     pfx=$1
3487     _cc=$2
3488
3489     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3490     unset _ld_o _ldflags _ld_lib _ld_path
3491     unset _depflags _DEPCMD _DEPFLAGS
3492     _flags_filter=echo
3493
3494     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3495         true # no-op to avoid reading stdin in following checks
3496     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3497         _type=llvm_gcc
3498         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3499         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3500         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3501         _cflags_speed='-O3'
3502         _cflags_size='-Os'
3503     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3504         _type=gcc
3505         gcc_version=$($_cc --version | head -n1)
3506         gcc_basever=$($_cc -dumpversion)
3507         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3508         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3509         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3510         if ! $_cc -dumpversion | grep -q '^2\.'; then
3511             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3512         fi
3513         _cflags_speed='-O3'
3514         _cflags_size='-Os'
3515     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3516         _type=icc
3517         _ident=$($_cc --version | head -n1)
3518         _depflags='-MMD'
3519         _cflags_speed='-O3'
3520         _cflags_size='-Os'
3521         _cflags_noopt='-O1'
3522         _flags_filter=icc_flags
3523     elif $_cc -v 2>&1 | grep -q xlc; then
3524         _type=xlc
3525         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3526         _cflags_speed='-O5'
3527         _cflags_size='-O5 -qcompact'
3528     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3529         _type=ccc
3530         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3531         _DEPFLAGS='-M'
3532         _cflags_speed='-fast'
3533         _cflags_size='-O1'
3534         _flags_filter=ccc_flags
3535     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3536         test -d "$sysroot" || die "No valid sysroot specified."
3537         _type=armcc
3538         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3539         armcc_conf="$PWD/armcc.conf"
3540         $_cc --arm_linux_configure                 \
3541              --arm_linux_config_file="$armcc_conf" \
3542              --configure_sysroot="$sysroot"        \
3543              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3544              die "Error creating armcc configuration file."
3545         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3546         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3547         as_default="${cross_prefix}gcc"
3548         _depflags='-MMD'
3549         _cflags_speed='-O3'
3550         _cflags_size='-Os'
3551     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3552         _type=tms470
3553         _ident=$($_cc -version | head -n1 | tr -s ' ')
3554         _flags='--gcc --abi=eabi -me'
3555         _cc_e='-ppl -fe=$@'
3556         _cc_o='-fe=$@'
3557         _depflags='-ppa -ppd=$(@:.o=.d)'
3558         _cflags_speed='-O3 -mf=5'
3559         _cflags_size='-O3 -mf=2'
3560         _flags_filter=tms470_flags
3561     elif $_cc -v 2>&1 | grep -q clang; then
3562         _type=clang
3563         _ident=$($_cc --version | head -n1)
3564         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3565         _cflags_speed='-O3'
3566         _cflags_size='-Os'
3567     elif $_cc -V 2>&1 | grep -q Sun; then
3568         _type=suncc
3569         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3570         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3571         _DEPFLAGS='-xM1 -xc99'
3572         _ldflags='-std=c99'
3573         _cflags_speed='-O5'
3574         _cflags_size='-O5 -xspace'
3575         _flags_filter=suncc_flags
3576     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3577         _type=pathscale
3578         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3579         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3580         _cflags_speed='-O2'
3581         _cflags_size='-Os'
3582         _flags_filter='filter_out -Wdisabled-optimization'
3583     elif $_cc -v 2>&1 | grep -q Open64; then
3584         _type=open64
3585         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3586         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3587         _cflags_speed='-O2'
3588         _cflags_size='-Os'
3589         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3590     elif $_cc -V 2>&1 | grep -q Portland; then
3591         _type=pgi
3592         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3593         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3594         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3595         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3596         _cflags_noopt="-O"
3597         _flags_filter=pgi_flags
3598     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3599         _type=armasm
3600         _ident=$($_cc | head -n1)
3601         # 4509: "This form of conditional instruction is deprecated"
3602         _flags="-nologo -ignore 4509"
3603         _flags_filter=armasm_flags
3604     elif $_cc 2>&1 | grep -q Intel; then
3605         _type=icl
3606         _ident=$($_cc 2>&1 | head -n1)
3607         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3608         # Not only is O3 broken on 13.x+ but it is slower on all previous
3609         # versions (tested) as well.
3610         _cflags_speed="-O2"
3611         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3612         if $_cc 2>&1 | grep -q Linker; then
3613             _ld_o='-out:$@'
3614         else
3615             _ld_o='-Fe$@'
3616         fi
3617         _cc_o='-Fo$@'
3618         _cc_e='-P'
3619         _flags_filter=icl_flags
3620         _ld_lib='lib%.a'
3621         _ld_path='-libpath:'
3622         # -Qdiag-error to make icl error when seeing certain unknown arguments
3623         _flags='-nologo -Qdiag-error:4044,10157'
3624         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3625         # with MSVC which enables it by default.
3626         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3627         disable stripping
3628     elif $_cc 2>&1 | grep -q Microsoft; then
3629         _type=msvc
3630         _ident=$($_cc 2>&1 | head -n1)
3631         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3632         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3633         _cflags_speed="-O2"
3634         _cflags_size="-O1"
3635         if $_cc 2>&1 | grep -q Linker; then
3636             _ld_o='-out:$@'
3637         else
3638             _ld_o='-Fe$@'
3639         fi
3640         _cc_o='-Fo$@'
3641         _cc_e='-P -Fi$@'
3642         _flags_filter=msvc_flags
3643         _ld_lib='lib%.a'
3644         _ld_path='-libpath:'
3645         _flags='-nologo'
3646         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3647         disable stripping
3648     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3649         _type=cparser
3650         _ident=$($_cc --version | head -n1)
3651         _depflags='-MMD'
3652         _cflags_speed='-O4'
3653         _cflags_size='-O2'
3654         _flags_filter=cparser_flags
3655     fi
3656
3657     eval ${pfx}_type=\$_type
3658     eval ${pfx}_ident=\$_ident
3659 }
3660
3661 set_ccvars(){
3662     eval ${1}_C=\${_cc_c-\${${1}_C}}
3663     eval ${1}_E=\${_cc_e-\${${1}_E}}
3664     eval ${1}_O=\${_cc_o-\${${1}_O}}
3665
3666     if [ -n "$_depflags" ]; then
3667         eval ${1}_DEPFLAGS=\$_depflags
3668     else
3669         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3670         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3671         eval DEP${1}FLAGS=\$_flags
3672     fi
3673 }
3674
3675 probe_cc cc "$cc"
3676 cflags_filter=$_flags_filter
3677 cflags_speed=$_cflags_speed
3678 cflags_size=$_cflags_size
3679 cflags_noopt=$_cflags_noopt
3680 add_cflags $_flags $_cflags
3681 cc_ldflags=$_ldflags
3682 set_ccvars CC
3683
3684 probe_cc hostcc "$host_cc"
3685 host_cflags_filter=$_flags_filter
3686 add_host_cflags  $_flags $_cflags
3687 set_ccvars HOSTCC
3688
3689 test -n "$cc_type" && enable $cc_type ||
3690     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3691
3692 : ${as_default:=$cc}
3693 : ${dep_cc_default:=$cc}
3694 : ${ld_default:=$cc}
3695 : ${host_ld_default:=$host_cc}
3696 set_default ar as dep_cc ld host_ld windres
3697
3698 probe_cc as "$as"
3699 asflags_filter=$_flags_filter
3700 add_asflags $_flags $_cflags
3701 set_ccvars AS
3702
3703 probe_cc ld "$ld"
3704 ldflags_filter=$_flags_filter
3705 add_ldflags $_flags $_ldflags
3706 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3707 LD_O=${_ld_o-$LD_O}
3708 LD_LIB=${_ld_lib-$LD_LIB}
3709 LD_PATH=${_ld_path-$LD_PATH}
3710
3711 probe_cc hostld "$host_ld"
3712 host_ldflags_filter=$_flags_filter
3713 add_host_ldflags $_flags $_ldflags
3714 HOSTLD_O=${_ld_o-$HOSTLD_O}
3715
3716 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3717     probe_cc depcc "$dep_cc"
3718     CCDEP=${_DEPCMD:-$DEPCMD}
3719     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3720     DEPCCFLAGS=$_flags
3721 fi
3722
3723 if $ar 2>&1 | grep -q Microsoft; then
3724     arflags="-nologo"
3725     ar_o='-out:$@'
3726 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3727     arflags="rq"
3728     ar_o='$@'
3729 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3730     arflags='-Xany -r -c'
3731     ar_o='$@'
3732 elif $ar 2>&1 | grep -q "\[D\] "; then
3733     arflags="rcD"
3734     ar_o='$@'
3735 else
3736     arflags="rc"
3737     ar_o='$@'
3738 fi
3739
3740 add_cflags $extra_cflags
3741 add_cxxflags $extra_cxxflags
3742 add_asflags $extra_cflags
3743
3744 if test -n "$sysroot"; then
3745     case "$cc_type" in
3746         gcc|llvm_gcc|clang)
3747             add_cppflags --sysroot="$sysroot"
3748             add_ldflags --sysroot="$sysroot"
3749 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3750             add_cppflags -isysroot "$sysroot"
3751             add_ldflags -isysroot "$sysroot"
3752         ;;
3753         tms470)
3754             add_cppflags -I"$sysinclude"
3755             add_ldflags  --sysroot="$sysroot"
3756         ;;
3757     esac
3758 fi
3759
3760 if test "$cpu" = host; then
3761     enabled cross_compile &&
3762         die "--cpu=host makes no sense when cross-compiling."
3763
3764     case "$cc_type" in
3765         gcc|llvm_gcc)
3766             check_native(){
3767                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3768                 sed -n "/cc1.*$1=/{
3769                             s/.*$1=\\([^ ]*\\).*/\\1/
3770                             p
3771                             q
3772                         }" $TMPE
3773             }
3774             cpu=$(check_native -march || check_native -mcpu)
3775         ;;
3776     esac
3777
3778     test "${cpu:-host}" = host &&
3779         die "--cpu=host not supported with compiler $cc"
3780 fi
3781
3782 # Deal with common $arch aliases
3783 case "$arch" in
3784     aarch64|arm64)
3785         arch="aarch64"
3786     ;;
3787     arm*|iPad*|iPhone*)
3788         arch="arm"
3789     ;;
3790     mips*|IP*)
3791         arch="mips"
3792     ;;
3793     parisc*|hppa*)
3794         arch="parisc"
3795     ;;
3796     "Power Macintosh"|ppc*|powerpc*)
3797         arch="ppc"
3798     ;;
3799     s390|s390x)
3800         arch="s390"
3801     ;;
3802     sh4|sh)
3803         arch="sh4"
3804     ;;
3805     sun4u|sparc*)
3806         arch="sparc"
3807     ;;
3808     tilegx|tile-gx)
3809         arch="tilegx"
3810     ;;
3811     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3812         arch="x86"
3813     ;;
3814 esac
3815
3816 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3817 enable $arch
3818
3819 # Add processor-specific flags
3820 if enabled aarch64; then
3821
3822     case $cpu in
3823         armv*)
3824             cpuflags="-march=$cpu"
3825         ;;
3826         *)
3827             cpuflags="-mcpu=$cpu"
3828         ;;
3829     esac
3830
3831 elif enabled alpha; then
3832
3833     cpuflags="-mcpu=$cpu"
3834
3835 elif enabled arm; then
3836
3837     check_arm_arch() {
3838         check_cpp_condition stddef.h \
3839             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3840             $cpuflags
3841     }
3842
3843     probe_arm_arch() {
3844         if   check_arm_arch 4;        then echo armv4;
3845         elif check_arm_arch 4T;       then echo armv4t;
3846         elif check_arm_arch 5;        then echo armv5;
3847         elif check_arm_arch 5E;       then echo armv5e;
3848         elif check_arm_arch 5T;       then echo armv5t;
3849         elif check_arm_arch 5TE;      then echo armv5te;
3850         elif check_arm_arch 5TEJ;     then echo armv5te;
3851         elif check_arm_arch 6;        then echo armv6;
3852         elif check_arm_arch 6J;       then echo armv6j;
3853         elif check_arm_arch 6K;       then echo armv6k;
3854         elif check_arm_arch 6Z;       then echo armv6z;
3855         elif check_arm_arch 6ZK;      then echo armv6zk;
3856         elif check_arm_arch 6T2;      then echo armv6t2;
3857         elif check_arm_arch 7;        then echo armv7;
3858         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3859         elif check_arm_arch 7S;       then echo armv7-a;
3860         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3861         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3862         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3863         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3864         fi
3865     }
3866
3867     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3868
3869     case $cpu in
3870         armv*)
3871             cpuflags="-march=$cpu"
3872             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3873         ;;
3874         *)
3875             cpuflags="-mcpu=$cpu"
3876             case $cpu in
3877                 cortex-a*)                               subarch=armv7a  ;;
3878                 cortex-r*)                               subarch=armv7r  ;;
3879                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3880                 arm11*)                                  subarch=armv6   ;;
3881                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3882                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3883                 *)                             subarch=$(probe_arm_arch) ;;
3884             esac
3885         ;;
3886     esac
3887
3888     case "$subarch" in
3889         armv5t*)    enable fast_clz                ;;
3890         armv[6-8]*)
3891             enable fast_clz
3892             disabled fast_unaligned || enable fast_unaligned
3893             ;;
3894     esac
3895
3896 elif enabled avr32; then
3897
3898     case $cpu in
3899         ap7[02]0[0-2])
3900             subarch="avr32_ap"
3901             cpuflags="-mpart=$cpu"
3902         ;;
3903         ap)
3904             subarch="avr32_ap"
3905             cpuflags="-march=$cpu"
3906         ;;
3907         uc3[ab]*)
3908             subarch="avr32_uc"
3909             cpuflags="-mcpu=$cpu"
3910         ;;
3911         uc)
3912             subarch="avr32_uc"
3913             cpuflags="-march=$cpu"
3914         ;;
3915     esac
3916
3917 elif enabled bfin; then
3918
3919     cpuflags="-mcpu=$cpu"
3920
3921 elif enabled mips; then
3922
3923     cpuflags="-march=$cpu"
3924
3925     case $cpu in
3926         24kc)
3927             disable mips32r5
3928             disable mips64r6
3929             disable mipsfpu
3930             disable mipsdspr1
3931             disable mipsdspr2
3932             disable msa
3933         ;;
3934         24kf*)
3935             disable mips32r5
3936             disable mips64r6
3937             disable mipsdspr1
3938             disable mipsdspr2
3939             disable msa
3940         ;;
3941         24kec|34kc|1004kc)
3942             disable mips32r5
3943             disable mips64r6
3944             disable mipsfpu
3945             disable mipsdspr2
3946             disable msa
3947         ;;
3948         24kef*|34kf*|1004kf*)
3949             disable mips32r5
3950             disable mips64r6
3951             disable mipsdspr2
3952             disable msa
3953         ;;
3954         74kc)
3955             disable mips32r5
3956             disable mips64r6
3957             disable mipsfpu
3958             disable msa
3959         ;;
3960         74kf)
3961             disable mips32r5
3962             disable mips64r6
3963             disable msa
3964         ;;
3965         p5600)
3966             disable mips64r6
3967             disable mipsdspr1
3968             disable mipsdspr2
3969
3970             check_cflags "-mtune=p5600"
3971         ;;
3972         i6400)
3973             disable mips32r5
3974             disable mipsdspr1
3975             disable mipsdspr2
3976             disable mipsfpu
3977
3978             check_cflags "-mtune=i6400 -mabi=64"
3979             check_ldflags "-mabi=64"
3980         ;;
3981         loongson*)
3982             disable mipsfpu
3983             disable mips32r2
3984             disable mips32r5
3985             disable mips64r6
3986             disable mipsdspr1
3987             disable mipsdspr2
3988             disable msa
3989             enable local_aligned_8 local_aligned_16 local_aligned_32
3990             enable simd_align_16
3991             enable fast_64bit
3992             enable fast_clz
3993             enable fast_cmov
3994             enable fast_unaligned
3995             disable aligned_stack
3996             case $cpu in
3997                 loongson3*)
3998                     cpuflags="-march=loongson3a -mhard-float"
3999                 ;;
4000                 loongson2e)
4001                     cpuflags="-march=loongson2e -mhard-float"
4002                 ;;
4003                 loongson2f)
4004                     cpuflags="-march=loongson2f -mhard-float"
4005                 ;;
4006             esac
4007         ;;
4008         generic)
4009             disable mips32r5
4010             disable mips64r6
4011             disable msa
4012         ;;
4013     esac
4014
4015 elif enabled ppc; then
4016
4017     disable ldbrx
4018
4019     case $(tolower $cpu) in
4020         601|ppc601|powerpc601)
4021             cpuflags="-mcpu=601"
4022             disable altivec
4023         ;;
4024         603*|ppc603*|powerpc603*)
4025             cpuflags="-mcpu=603"
4026             disable altivec
4027         ;;
4028         604*|ppc604*|powerpc604*)
4029             cpuflags="-mcpu=604"
4030             disable altivec
4031         ;;
4032         g3|75*|ppc75*|powerpc75*)
4033             cpuflags="-mcpu=750"
4034             disable altivec
4035         ;;
4036         g4|745*|ppc745*|powerpc745*)
4037             cpuflags="-mcpu=7450"
4038             disable vsx
4039         ;;
4040         74*|ppc74*|powerpc74*)
4041             cpuflags="-mcpu=7400"
4042             disable vsx
4043         ;;
4044         g5|970|ppc970|powerpc970)
4045             cpuflags="-mcpu=970"
4046             disable vsx
4047         ;;
4048         power[3-6]*)
4049             cpuflags="-mcpu=$cpu"
4050             disable vsx
4051         ;;
4052         power[7-8]*)
4053             cpuflags="-mcpu=$cpu"
4054         ;;
4055         cell)
4056             cpuflags="-mcpu=cell"
4057             enable ldbrx
4058             disable vsx
4059         ;;
4060         e500mc)
4061             cpuflags="-mcpu=e500mc"
4062             disable altivec
4063         ;;
4064         e500v2)
4065             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4066             disable altivec
4067             disable dcbzl
4068         ;;
4069         e500)
4070             cpuflags="-mcpu=8540 -mhard-float"
4071             disable altivec
4072             disable dcbzl
4073         ;;
4074     esac
4075
4076 elif enabled sparc; then
4077
4078     case $cpu in
4079         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4080             cpuflags="-mcpu=$cpu"
4081         ;;
4082         ultrasparc*|niagara[234])
4083             cpuflags="-mcpu=$cpu"
4084         ;;
4085     esac
4086
4087 elif enabled x86; then
4088
4089     case $cpu in
4090         i[345]86|pentium)
4091             cpuflags="-march=$cpu"
4092             disable i686
4093             disable mmx
4094         ;;
4095         # targets that do NOT support nopl and conditional mov (cmov)
4096         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4097             cpuflags="-march=$cpu"
4098             disable i686
4099         ;;
4100         # targets that do support nopl and conditional mov (cmov)
4101         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4102         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4103             cpuflags="-march=$cpu"
4104             enable i686
4105             enable fast_cmov
4106         ;;
4107         # targets that do support conditional mov but on which it's slow
4108         pentium4|pentium4m|prescott|nocona)
4109             cpuflags="-march=$cpu"
4110             enable i686
4111             disable fast_cmov
4112         ;;
4113     esac
4114
4115 fi
4116
4117 if [ "$cpu" != generic ]; then
4118     add_cflags  $cpuflags
4119     add_asflags $cpuflags
4120 fi
4121
4122 # compiler sanity check
4123 check_exec <<EOF
4124 int main(void){ return 0; }
4125 EOF
4126 if test "$?" != 0; then
4127     echo "$cc is unable to create an executable file."
4128     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4129         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4130         echo "Only do this if you know what cross compiling means."
4131     fi
4132     die "C compiler test failed."
4133 fi
4134
4135 add_cppflags -D_ISOC99_SOURCE
4136 add_cxxflags -D__STDC_CONSTANT_MACROS
4137 check_cflags -std=c99
4138 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4139 #include <stdlib.h>
4140 EOF
4141 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4142 #include <stdlib.h>
4143 EOF
4144
4145 add_host_cppflags -D_ISOC99_SOURCE
4146 check_host_cflags -std=c99
4147 check_host_cflags -Wall
4148 check_host_cflags -O3
4149
4150 check_64bit(){
4151     arch32=$1
4152     arch64=$2
4153     expr=$3
4154     check_code cc "" "int test[2*($expr) - 1]" &&
4155         subarch=$arch64 || subarch=$arch32
4156 }
4157
4158 case "$arch" in
4159     aarch64|alpha|ia64)
4160         spic=$shared
4161     ;;
4162     mips)
4163         check_64bit mips mips64 '_MIPS_SIM > 1'
4164         spic=$shared
4165     ;;
4166     parisc)
4167         check_64bit parisc parisc64 'sizeof(void *) > 4'
4168         spic=$shared
4169     ;;
4170     ppc)
4171         check_64bit ppc ppc64 'sizeof(void *) > 4'
4172         spic=$shared
4173     ;;
4174     s390)
4175         check_64bit s390 s390x 'sizeof(void *) > 4'
4176         spic=$shared
4177     ;;
4178     sparc)
4179         check_64bit sparc sparc64 'sizeof(void *) > 4'
4180         spic=$shared
4181     ;;
4182     x86)
4183         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4184         # Treat x32 as x64 for now. Note it also needs spic=$shared
4185         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4186             subarch=x86_64
4187         if test "$subarch" = "x86_64"; then
4188             spic=$shared
4189         fi
4190     ;;
4191     ppc)
4192         check_cc <<EOF && subarch="ppc64"
4193         int test[(int)sizeof(char*) - 7];
4194 EOF
4195     ;;
4196 esac
4197
4198 enable $subarch
4199 enabled spic && enable_weak pic
4200
4201 # OS specific
4202 case $target_os in
4203     aix)
4204         SHFLAGS=-shared
4205         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4206         enabled shared && add_ldflags -Wl,-brtl
4207         ;;
4208     android)
4209         disable symver
4210         enable section_data_rel_ro
4211         SLIB_INSTALL_NAME='$(SLIBNAME)'
4212         SLIB_INSTALL_LINKS=
4213         # soname not set on purpose
4214         SHFLAGS=-shared
4215         ;;
4216     haiku)
4217         prefix_default="/boot/common"
4218         network_extralibs="-lnetwork"
4219         host_libs=
4220         ;;
4221     sunos)
4222         SHFLAGS='-shared -Wl,-h,$$(@F)'
4223         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4224         network_extralibs="-lsocket -lnsl"
4225         add_cppflags -D__EXTENSIONS__
4226         # When using suncc to build, the Solaris linker will mark
4227         # an executable with each instruction set encountered by
4228         # the Solaris assembler.  As our libraries contain their own
4229         # guards for processor-specific code, instead suppress
4230         # generation of the HWCAPS ELF section on Solaris x86 only.
4231         enabled_all suncc x86 &&
4232             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4233             add_ldflags -Wl,-M,mapfile
4234         nm_default='nm -P -g'
4235         ;;
4236     netbsd)
4237         disable symver
4238         oss_indev_extralibs="-lossaudio"
4239         oss_outdev_extralibs="-lossaudio"
4240         enabled gcc || check_ldflags -Wl,-zmuldefs
4241         ;;
4242     openbsd|bitrig)
4243         disable symver
4244         SHFLAGS='-shared'
4245         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4246         SLIB_INSTALL_LINKS=
4247         oss_indev_extralibs="-lossaudio"
4248         oss_outdev_extralibs="-lossaudio"
4249         ;;
4250     dragonfly)
4251         disable symver
4252         ;;
4253     freebsd)
4254         ;;
4255     bsd/os)
4256         add_extralibs -lpoll -lgnugetopt
4257         strip="strip -d"
4258         ;;
4259     darwin)
4260         enabled ppc && add_asflags -force_cpusubtype_ALL
4261         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4262         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4263         strip="${strip} -x"
4264         add_ldflags -Wl,-dynamic,-search_paths_first
4265         SLIBSUF=".dylib"
4266         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4267         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4268         objformat="macho"
4269         enabled x86_64 && objformat="macho64"
4270         enabled_any pic shared x86_64 ||
4271             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4272         ;;
4273     mingw32*)
4274         if test $target_os = "mingw32ce"; then
4275             disable network
4276         else
4277             target_os=mingw32
4278         fi
4279         LIBTARGET=i386
4280         if enabled x86_64; then
4281             LIBTARGET="i386:x86-64"
4282         elif enabled arm; then
4283             LIBTARGET=arm-wince
4284         fi
4285         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4286         check_ldflags -Wl,--nxcompat
4287         check_ldflags -Wl,--dynamicbase
4288         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4289         shlibdir_default="$bindir_default"
4290         SLIBPREF=""
4291         SLIBSUF=".dll"
4292         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4293         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4294         dlltool="${cross_prefix}dlltool"
4295         if check_cmd lib.exe -list; then
4296             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4297             if enabled x86_64; then
4298                 LIBTARGET=x64
4299             fi
4300         elif check_cmd $dlltool --version; then
4301             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4302         fi
4303         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4304         SLIB_INSTALL_LINKS=
4305         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4306         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4307         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4308         objformat="win32"
4309         ranlib=:
4310         enable dos_paths
4311         ;;
4312     win32|win64)
4313         disable symver
4314         if enabled shared; then
4315             # Link to the import library instead of the normal static library
4316             # for shared libs.
4317             LD_LIB='%.lib'
4318             # Cannot build both shared and static libs with MSVC or icl.
4319             disable static
4320         fi
4321         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4322         shlibdir_default="$bindir_default"
4323         SLIBPREF=""
4324         SLIBSUF=".dll"
4325         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4326         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4327         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4328         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4329         SLIB_INSTALL_LINKS=
4330         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4331         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4332         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4333         objformat="win32"
4334         ranlib=:
4335         enable dos_paths
4336         ;;
4337     cygwin*)
4338         target_os=cygwin
4339         shlibdir_default="$bindir_default"
4340         SLIBPREF="cyg"
4341         SLIBSUF=".dll"
4342         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4343         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4344         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4345         SLIB_INSTALL_LINKS=
4346         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4347         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4348         objformat="win32"
4349         enable dos_paths
4350         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4351         ;;
4352     *-dos|freedos|opendos)
4353         network_extralibs="-lsocket"
4354         objformat="coff"
4355         enable dos_paths
4356         add_cppflags -U__STRICT_ANSI__
4357         ;;
4358     linux)
4359         enable dv1394
4360         enable section_data_rel_ro
4361         ;;
4362     irix*)
4363         target_os=irix
4364         ranlib="echo ignoring ranlib"
4365         ;;
4366     os/2*)
4367         strip="lxlite -CS"
4368         ln_s="cp -f"
4369         objformat="aout"
4370         add_cppflags -D_GNU_SOURCE
4371         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4372         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4373         LIBSUF="_s.a"
4374         SLIBPREF=""
4375         SLIBSUF=".dll"
4376         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4377         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4378         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4379             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4380             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4381             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4382             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4383         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4384             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4385         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4386         enable dos_paths
4387         enable_weak os2threads
4388         ;;
4389     gnu/kfreebsd)
4390         add_cppflags -D_BSD_SOURCE
4391         ;;
4392     gnu)
4393         ;;
4394     qnx)
4395         add_cppflags -D_QNX_SOURCE
4396         network_extralibs="-lsocket"
4397         ;;
4398     symbian)
4399         SLIBSUF=".dll"
4400         enable dos_paths
4401         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4402         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4403         add_ldflags -Wl,--target1-abs,--no-undefined \
4404                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4405                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4406         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4407                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4408                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4409         ;;
4410     osf1)
4411         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4412         ;;
4413     minix)
4414         ;;
4415     plan9)
4416         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4417                      -D_REENTRANT_SOURCE        \
4418                      -D_RESEARCH_SOURCE         \
4419                      -DFD_SETSIZE=96            \
4420                      -DHAVE_SOCK_OPTS
4421         add_compat strtod.o strtod=avpriv_strtod
4422         network_extralibs='-lbsd'
4423         exeobjs=compat/plan9/main.o
4424         disable ffserver
4425         cp_f='cp'
4426         ;;
4427     none)
4428         ;;
4429     *)
4430         die "Unknown OS '$target_os'."
4431         ;;
4432 esac
4433
4434 # determine libc flavour
4435
4436 probe_libc(){
4437     pfx=$1
4438     pfx_no_=${pfx%_}
4439     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4440     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4441         eval ${pfx}libc_type=uclibc
4442         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4443     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4444         eval ${pfx}libc_type=glibc
4445         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4446     # MinGW headers can be installed on Cygwin, so check for newlib first.
4447     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4448         eval ${pfx}libc_type=newlib
4449         add_${pfx}cppflags -U__STRICT_ANSI__
4450     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4451     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4452         eval ${pfx}libc_type=mingw64
4453         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4454             add_compat msvcrt/snprintf.o
4455             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4456         fi
4457         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4458         eval test \$${pfx_no_}cc_type = "gcc" &&
4459             add_${pfx}cppflags -D__printf__=__gnu_printf__
4460     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4461          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4462         eval ${pfx}libc_type=mingw32
4463         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4464             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4465             die "ERROR: MinGW32 runtime version must be >= 3.15."
4466         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4467         eval test \$${pfx_no_}cc_type = "gcc" &&
4468             add_${pfx}cppflags -D__printf__=__gnu_printf__
4469     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4470         eval ${pfx}libc_type=msvcrt
4471         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4472             if [ "$pfx" = host_ ]; then
4473                 add_host_cppflags -Dsnprintf=_snprintf
4474             else
4475                 add_compat strtod.o strtod=avpriv_strtod
4476                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4477                                              _snprintf=avpriv_snprintf  \
4478                                              vsnprintf=avpriv_vsnprintf
4479             fi
4480         fi
4481         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4482         # 0x601 by default unless something else is set by the user.
4483         # This can easily lead to us detecting functions only present
4484         # in such new versions and producing binaries requiring windows 7.0.
4485         # Therefore explicitly set the default to XP unless the user has
4486         # set something else on the command line.
4487         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4488             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4489     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4490         eval ${pfx}libc_type=klibc
4491     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4492         eval ${pfx}libc_type=bionic
4493     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4494         eval ${pfx}libc_type=solaris
4495         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4496     fi
4497     check_${pfx}cc <<EOF
4498 #include <time.h>
4499 void *v = localtime_r;
4500 EOF
4501 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4502 #include <time.h>
4503 void *v = localtime_r;
4504 EOF
4505
4506 }
4507
4508 probe_libc
4509 test -n "$libc_type" && enable libc_$libc_type
4510 probe_libc host_
4511 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4512
4513 case $libc_type in
4514     bionic)
4515         add_compat strtod.o strtod=avpriv_strtod
4516         ;;
4517 esac
4518
4519 # hacks for compiler/libc/os combinations
4520
4521 if enabled_all tms470 libc_glibc; then
4522     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4523     add_cppflags -D__USER_LABEL_PREFIX__=
4524     add_cppflags -D__builtin_memset=memset
4525     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4526     add_cflags   -pds=48    # incompatible redefinition of macro
4527 fi
4528
4529 if enabled_all ccc libc_glibc; then
4530     add_ldflags -Wl,-z,now  # calls to libots crash without this
4531 fi
4532
4533 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4534     add_cppflags '-I\$(SRC_PATH)/compat/float'
4535
4536 esc(){
4537     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4538 }
4539
4540 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4541
4542 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4543
4544 set_default libdir
4545 : ${shlibdir_default:="$libdir"}
4546 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4547
4548 set_default $PATHS_LIST
4549 set_default nm
4550
4551 # we need to build at least one lib type
4552 if ! enabled_any static shared; then
4553     cat <<EOF
4554 At least one library type must be built.
4555 Specify --enable-static to build the static libraries or --enable-shared to
4556 build the shared libraries as well. To only build the shared libraries specify
4557 --disable-static in addition to --enable-shared.
4558 EOF
4559     exit 1;
4560 fi
4561
4562 die_license_disabled() {
4563     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4564 }
4565
4566 die_license_disabled_gpl() {
4567     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4568 }
4569
4570 die_license_disabled gpl frei0r
4571 die_license_disabled gpl libcdio
4572 die_license_disabled gpl libsmbclient
4573 die_license_disabled gpl libutvideo
4574 die_license_disabled gpl libvidstab
4575 die_license_disabled gpl libx264
4576 die_license_disabled gpl libx265
4577 die_license_disabled gpl libxavs
4578 die_license_disabled gpl libxvid
4579 die_license_disabled gpl libzvbi
4580 die_license_disabled gpl x11grab
4581
4582 die_license_disabled nonfree libaacplus
4583 die_license_disabled nonfree libfaac
4584 die_license_disabled nonfree nvenc
4585 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4586 enabled gpl && die_license_disabled_gpl nonfree openssl
4587
4588 die_license_disabled version3 libopencore_amrnb
4589 die_license_disabled version3 libopencore_amrwb
4590 die_license_disabled version3 libsmbclient
4591 die_license_disabled version3 libvo_aacenc
4592 die_license_disabled version3 libvo_amrwbenc
4593
4594 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4595
4596 disabled optimizations || check_cflags -fomit-frame-pointer
4597
4598 enable_weak_pic() {
4599     disabled pic && return
4600     enable pic
4601     add_cppflags -DPIC
4602     case "$target_os" in
4603     mingw*|cygwin*)
4604         ;;
4605     *)
4606         add_cflags -fPIC
4607         ;;
4608     esac
4609     add_asflags  -fPIC
4610 }
4611
4612 enabled pic && enable_weak_pic
4613
4614 check_cc <<EOF || die "Symbol mangling check failed."
4615 int ff_extern;
4616 EOF
4617 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4618 extern_prefix=${sym%%ff_extern*}
4619
4620 check_cc <<EOF && enable_weak inline_asm
4621 void foo(void) { __asm__ volatile ("" ::); }
4622 EOF
4623
4624 _restrict=
4625 for restrict_keyword in restrict __restrict__ __restrict; do
4626     check_cc <<EOF && _restrict=$restrict_keyword && break
4627 void foo(char * $restrict_keyword p);
4628 EOF
4629 done
4630
4631 check_cc <<EOF && enable pragma_deprecated
4632 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4633 EOF
4634
4635 check_cc <<EOF && enable attribute_packed
4636 struct { int x; } __attribute__((packed)) x;
4637 EOF
4638
4639 check_cc <<EOF && enable attribute_may_alias
4640 union { int x; } __attribute__((may_alias)) x;
4641 EOF
4642
4643 check_cc <<EOF || die "endian test failed"
4644 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4645 EOF
4646 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4647
4648 if ! enabled ppc64 || enabled bigendian; then
4649     disable vsx
4650 fi
4651
4652 check_gas() {
4653     log "check_gas using '$as' as AS"
4654     # :vararg is used on aarch64, arm and ppc altivec
4655     check_as <<EOF || return 1
4656 .macro m n, y:vararg=0
4657 \n: .int \y
4658 .endm
4659 m x
4660 EOF
4661     # .altmacro is only used in arm asm
4662     ! enabled arm || check_as <<EOF || return 1
4663 .altmacro
4664 EOF
4665     enable gnu_as
4666     return 0
4667 }
4668
4669 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4670     nogas=:
4671     enabled_any arm aarch64 && nogas=die
4672     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4673     as_noop=-v
4674
4675     case $as_type in
4676         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4677         gcc)  gaspp_as_type=gas ;;
4678         *)    gaspp_as_type=$as_type ;;
4679     esac
4680
4681     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4682
4683     test "${as#*gas-preprocessor.pl}" != "$as" ||
4684     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4685         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4686
4687     if ! check_gas ; then
4688         as=${gas:=$as}
4689         check_gas || \
4690             $nogas "GNU assembler not found, install/update gas-preprocessor"
4691     fi
4692
4693     check_as <<EOF && enable as_func
4694 .func test
4695 .endfunc
4696 EOF
4697 fi
4698
4699 check_inline_asm inline_asm_labels '"1:\n"'
4700
4701 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4702
4703 if enabled aarch64; then
4704     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4705     # internal assembler in clang 3.3 does not support this instruction
4706     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4707     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4708
4709     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4710
4711 elif enabled alpha; then
4712
4713     check_cflags -mieee
4714
4715 elif enabled arm; then
4716
4717     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4718 float func(float a, float b){ return a+b; }
4719 EOF
4720
4721     enabled thumb && check_cflags -mthumb || check_cflags -marm
4722
4723     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4724         enable vfp_args
4725     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4726         case "${cross_prefix:-$cc}" in
4727             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4728             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4729 __asm__ (".eabi_attribute 28, 1");
4730 int main(void) { return 0; }
4731 EOF
4732         esac
4733         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4734     fi
4735
4736     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4737     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4738     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4739     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4740     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4741     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4742     enabled setend  && check_insn setend  'setend be'
4743
4744     [ $target_os = linux ] || [ $target_os = android ] ||
4745         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4746             $ARCH_EXT_LIST_ARM
4747
4748     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4749
4750     check_as <<EOF && enable as_dn_directive
4751 ra .dn d0.i16
4752 .unreq ra
4753 EOF
4754
4755     # llvm's integrated assembler supports .object_arch from llvm 3.5
4756     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4757 .object_arch armv4
4758 EOF
4759
4760     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4761
4762 elif enabled mips; then
4763
4764     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4765     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4766     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4767
4768     # Enable minimum ISA based on selected options
4769     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4770         add_cflags "-mips64r2"
4771         add_asflags "-mips64r2"
4772     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4773         add_cflags "-mips64"
4774         add_asflags "-mips64"
4775     elif enabled mipsdspr1 || enabled mipsdspr2; then
4776         add_cflags "-mips32r2 -mfp32"
4777         add_asflags "-mips32r2 -mfp32"
4778     elif enabled mips32r5 || enabled mips64r6; then
4779         check_cflags "-mfp64"
4780         check_ldflags "-mfp64"
4781     fi
4782
4783     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4784      check_ldflags "-mips32r5" &&
4785      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4786     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4787      check_ldflags "-mips64r6" &&
4788      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4789     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4790      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4791     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4792      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4793     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4794      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4795     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4796      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4797
4798     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4799     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4800     enabled msa && add_asflags "-mmsa"
4801
4802 elif enabled parisc; then
4803
4804     if enabled gcc; then
4805         case $($cc -dumpversion) in
4806             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4807         esac
4808     fi
4809
4810 elif enabled ppc; then
4811
4812     enable local_aligned_8 local_aligned_16 local_aligned_32
4813
4814     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4815     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4816     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4817     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4818
4819     # AltiVec flags: The FSF version of GCC differs from the Apple version
4820     if enabled altivec; then
4821         check_cflags -maltivec -mabi=altivec &&
4822         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4823         check_cflags -faltivec
4824
4825         # check if our compiler supports Motorola AltiVec C API
4826         check_cc <<EOF || disable altivec
4827 $inc_altivec_h
4828 int main(void) {
4829     vector signed int v1 = (vector signed int) { 0 };
4830     vector signed int v2 = (vector signed int) { 1 };
4831     v1 = vec_add(v1, v2);
4832     return 0;
4833 }
4834 EOF
4835
4836         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4837     fi
4838
4839     if enabled vsx; then
4840         check_cflags -mvsx &&
4841         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4842     fi
4843
4844     if enabled power8; then
4845         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4846     fi
4847
4848 elif enabled x86; then
4849
4850     check_builtin rdtsc    intrin.h   "__rdtsc()"
4851     check_builtin mm_empty mmintrin.h "_mm_empty()"
4852
4853     enable local_aligned_8 local_aligned_16 local_aligned_32
4854
4855     # check whether EBP is available on x86
4856     # As 'i' is stored on the stack, this program will crash
4857     # if the base pointer is used to access it because the
4858     # base pointer is cleared in the inline assembly code.
4859     check_exec_crash <<EOF && enable ebp_available
4860 volatile int i=0;
4861 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4862 return i;
4863 EOF
4864
4865     # check whether EBX is available on x86
4866     check_inline_asm ebx_available '""::"b"(0)' &&
4867         check_inline_asm ebx_available '"":::"%ebx"'
4868
4869     # check whether xmm clobbers are supported
4870     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4871
4872     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||