Merge commit 'ea1d0b7ece1881c2f1360f8c1e2116791105af21'
[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   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-libfaac         enable AAC encoding via libfaac [no]
214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
218   --enable-libgme          enable Game Music Emu via libgme [no]
219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
222   --enable-libmfx          enable HW acceleration through libmfx
223   --enable-libmodplug      enable ModPlug via libmodplug [no]
224   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
225   --enable-libnut          enable NUT (de)muxing via libnut,
226                            native (de)muxer exists [no]
227   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
228   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
229   --enable-libopencv       enable video filtering via libopencv [no]
230   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
231   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
232   --enable-libopus         enable Opus de/encoding via libopus [no]
233   --enable-libpulse        enable Pulseaudio input via libpulse [no]
234   --enable-libquvi         enable quvi input via libquvi [no]
235   --enable-librtmp         enable RTMP[E] support via librtmp [no]
236   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
237   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
238   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
239   --enable-libsoxr         enable Include libsoxr resampling [no]
240   --enable-libspeex        enable Speex de/encoding via libspeex [no]
241   --enable-libssh          enable SFTP protocol via libssh [no]
242   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
243   --enable-libtheora       enable Theora encoding via libtheora [no]
244   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
245   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
246   --enable-libv4l2         enable libv4l2/v4l-utils [no]
247   --enable-libvidstab      enable video stabilization using vid.stab [no]
248   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
249   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
250   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
251                            native implementation exists [no]
252   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
253   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
254   --enable-libwebp         enable WebP encoding via libwebp [no]
255   --enable-libx264         enable H.264 encoding via x264 [no]
256   --enable-libx265         enable HEVC encoding via x265 [no]
257   --enable-libxavs         enable AVS encoding via xavs [no]
258   --enable-libxcb          enable X11 grabbing using XCB [auto]
259   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
260   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
261   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
262   --enable-libxvid         enable Xvid encoding via xvidcore,
263                            native MPEG-4/Xvid encoder exists [no]
264   --enable-libzmq          enable message passing via libzmq [no]
265   --enable-libzvbi         enable teletext support via libzvbi [no]
266   --disable-lzma           disable lzma [autodetect]
267   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
268   --enable-nvenc           enable NVIDIA NVENC support [no]
269   --enable-openal          enable OpenAL 1.1 capture support [no]
270   --enable-opencl          enable OpenCL code
271   --enable-opengl          enable OpenGL rendering [no]
272   --enable-openssl         enable openssl, needed for https support
273                            if gnutls is not used [no]
274   --disable-sdl            disable sdl [autodetect]
275   --enable-x11grab         enable X11 grabbing (legacy) [no]
276   --disable-xlib           disable xlib [autodetect]
277   --disable-zlib           disable zlib [autodetect]
278
279 Toolchain options:
280   --arch=ARCH              select architecture [$arch]
281   --cpu=CPU                select the minimum required CPU (affects
282                            instruction selection, may crash on older CPUs)
283   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
284   --progs-suffix=SUFFIX    program name suffix []
285   --enable-cross-compile   assume a cross-compiler is used
286   --sysroot=PATH           root of cross-build tree
287   --sysinclude=PATH        location of cross-build system headers
288   --target-os=OS           compiler targets OS [$target_os]
289   --target-exec=CMD        command to run executables on target
290   --target-path=DIR        path to view of build directory on target
291   --target-samples=DIR     path to samples directory on target
292   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
293   --toolchain=NAME         set tool defaults according to NAME
294   --nm=NM                  use nm tool NM [$nm_default]
295   --ar=AR                  use archive tool AR [$ar_default]
296   --as=AS                  use assembler AS [$as_default]
297   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
298   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
299   --cc=CC                  use C compiler CC [$cc_default]
300   --cxx=CXX                use C compiler CXX [$cxx_default]
301   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
302   --ld=LD                  use linker LD [$ld_default]
303   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
304   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
305   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
306   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
307   --host-cc=HOSTCC         use host C compiler HOSTCC
308   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
309   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
310   --host-ld=HOSTLD         use host linker HOSTLD
311   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
312   --host-libs=HLIBS        use libs HLIBS when linking for host
313   --host-os=OS             compiler host OS [$target_os]
314   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
315   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
316   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
317   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
318   --extra-libs=ELIBS       add ELIBS [$ELIBS]
319   --extra-version=STRING   version string suffix []
320   --optflags=OPTFLAGS      override optimization-related compiler flags
321   --build-suffix=SUFFIX    library name suffix []
322   --enable-pic             build position-independent code
323   --enable-thumb           compile for Thumb instruction set
324   --enable-lto             use link-time optimization
325
326 Advanced options (experts only):
327   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
328   --disable-symver         disable symbol versioning
329   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
330   --disable-safe-bitstream-reader
331                            disable buffer boundary checking in bitreaders
332                            (faster, but may crash)
333   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
334   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
335
336 Optimization options (experts only):
337   --disable-asm            disable all assembly optimizations
338   --disable-altivec        disable AltiVec optimizations
339   --disable-amd3dnow       disable 3DNow! optimizations
340   --disable-amd3dnowext    disable 3DNow! extended optimizations
341   --disable-mmx            disable MMX optimizations
342   --disable-mmxext         disable MMXEXT optimizations
343   --disable-sse            disable SSE optimizations
344   --disable-sse2           disable SSE2 optimizations
345   --disable-sse3           disable SSE3 optimizations
346   --disable-ssse3          disable SSSE3 optimizations
347   --disable-sse4           disable SSE4 optimizations
348   --disable-sse42          disable SSE4.2 optimizations
349   --disable-avx            disable AVX optimizations
350   --disable-xop            disable XOP optimizations
351   --disable-fma3           disable FMA3 optimizations
352   --disable-fma4           disable FMA4 optimizations
353   --disable-avx2           disable AVX2 optimizations
354   --disable-armv5te        disable armv5te optimizations
355   --disable-armv6          disable armv6 optimizations
356   --disable-armv6t2        disable armv6t2 optimizations
357   --disable-vfp            disable VFP optimizations
358   --disable-neon           disable NEON optimizations
359   --disable-inline-asm     disable use of inline assembly
360   --disable-yasm           disable use of nasm/yasm assembly
361   --disable-mips32r2       disable MIPS32R2 optimizations
362   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
363   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
364   --disable-mipsfpu        disable floating point MIPS optimizations
365   --disable-fast-unaligned consider unaligned accesses slow
366
367 Developer options (useful when working on FFmpeg itself):
368   --disable-debug          disable debugging symbols
369   --enable-debug=LEVEL     set the debug level [$debuglevel]
370   --disable-optimizations  disable compiler optimizations
371   --enable-extra-warnings  enable more compiler warnings
372   --disable-stripping      disable stripping of executables and shared libraries
373   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
374                            2 causes a slowdown at runtime.
375   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
376   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
377                            leaks and errors, using the specified valgrind binary.
378                            Cannot be combined with --target-exec
379   --enable-ftrapv          Trap arithmetic overflows
380   --samples=PATH           location of test samples for FATE, if not set use
381                            \$FATE_SAMPLES at make invocation time.
382   --enable-neon-clobber-test check NEON registers for clobbering (should be
383                            used only for debugging purposes)
384   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
385                            should be used only for debugging purposes)
386   --enable-random          randomly enable/disable components
387   --disable-random
388   --enable-random=LIST     randomly enable/disable specific components or
389   --disable-random=LIST    component groups. LIST is a comma-separated list
390                            of NAME[:PROB] entries where NAME is a component
391                            (group) and PROB the probability associated with
392                            NAME (default 0.5).
393   --random-seed=VALUE      seed value for --enable/disable-random
394
395 NOTE: Object files are built at the place where configure is launched.
396 EOF
397   exit 0
398 }
399
400 quotes='""'
401
402 log(){
403     echo "$@" >> $logfile
404 }
405
406 log_file(){
407     log BEGIN $1
408     pr -n -t $1 >> $logfile
409     log END $1
410 }
411
412 echolog(){
413     log "$@"
414     echo "$@"
415 }
416
417 warn(){
418     log "WARNING: $*"
419     WARNINGS="${WARNINGS}WARNING: $*\n"
420 }
421
422 die(){
423     echolog "$@"
424     cat <<EOF
425
426 If you think configure made a mistake, make sure you are using the latest
427 version from Git.  If the latest version fails, report the problem to the
428 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
429 EOF
430     if disabled logging; then
431         cat <<EOF
432 Rerun configure with logging enabled (do not use --disable-logging), and
433 include the log this produces with your report.
434 EOF
435     else
436         cat <<EOF
437 Include the log file "$logfile" produced by configure as this will help
438 solve the problem.
439 EOF
440     fi
441     exit 1
442 }
443
444 # Avoid locale weirdness, besides we really just want to translate ASCII.
445 toupper(){
446     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
447 }
448
449 tolower(){
450     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
451 }
452
453 c_escape(){
454     echo "$*" | sed 's/["\\]/\\\0/g'
455 }
456
457 sh_quote(){
458     v=$(echo "$1" | sed "s/'/'\\\\''/g")
459     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
460     echo "$v"
461 }
462
463 cleanws(){
464     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
465 }
466
467 filter(){
468     pat=$1
469     shift
470     for v; do
471         eval "case $v in $pat) echo $v ;; esac"
472     done
473 }
474
475 filter_out(){
476     pat=$1
477     shift
478     for v; do
479         eval "case $v in $pat) ;; *) echo $v ;; esac"
480     done
481 }
482
483 map(){
484     m=$1
485     shift
486     for v; do eval $m; done
487 }
488
489 add_suffix(){
490     suffix=$1
491     shift
492     for v; do echo ${v}${suffix}; done
493 }
494
495 set_all(){
496     value=$1
497     shift
498     for var in $*; do
499         eval $var=$value
500     done
501 }
502
503 set_weak(){
504     value=$1
505     shift
506     for var; do
507         eval : \${$var:=$value}
508     done
509 }
510
511 sanitize_var_name(){
512     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
513 }
514
515 set_safe(){
516     var=$1
517     shift
518     eval $(sanitize_var_name "$var")='$*'
519 }
520
521 get_safe(){
522     eval echo \$$(sanitize_var_name "$1")
523 }
524
525 pushvar(){
526     for pvar in $*; do
527         eval level=\${${pvar}_level:=0}
528         eval ${pvar}_${level}="\$$pvar"
529         eval ${pvar}_level=$(($level+1))
530     done
531 }
532
533 popvar(){
534     for pvar in $*; do
535         eval level=\${${pvar}_level:-0}
536         test $level = 0 && continue
537         eval level=$(($level-1))
538         eval $pvar="\${${pvar}_${level}}"
539         eval ${pvar}_level=$level
540         eval unset ${pvar}_${level}
541     done
542 }
543
544 enable(){
545     set_all yes $*
546 }
547
548 disable(){
549     set_all no $*
550 }
551
552 enable_weak(){
553     set_weak yes $*
554 }
555
556 disable_weak(){
557     set_weak no $*
558 }
559
560 enable_safe(){
561     for var; do
562         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
563     done
564 }
565
566 disable_safe(){
567     for var; do
568         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
569     done
570 }
571
572 do_enable_deep(){
573     for var; do
574         enabled $var && continue
575         eval sel="\$${var}_select"
576         eval sgs="\$${var}_suggest"
577         pushvar var sgs
578         enable_deep $sel
579         popvar sgs
580         enable_deep_weak $sgs
581         popvar var
582     done
583 }
584
585 enable_deep(){
586     do_enable_deep $*
587     enable $*
588 }
589
590 enable_deep_weak(){
591     for var; do
592         disabled $var && continue
593         pushvar var
594         do_enable_deep $var
595         popvar var
596         enable_weak $var
597     done
598 }
599
600 enabled(){
601     test "${1#!}" = "$1" && op== || op=!=
602     eval test "x\$${1#!}" $op "xyes"
603 }
604
605 disabled(){
606     test "${1#!}" = "$1" && op== || op=!=
607     eval test "x\$${1#!}" $op "xno"
608 }
609
610 enabled_all(){
611     for opt; do
612         enabled $opt || return 1
613     done
614 }
615
616 disabled_all(){
617     for opt; do
618         disabled $opt || return 1
619     done
620 }
621
622 enabled_any(){
623     for opt; do
624         enabled $opt && return 0
625     done
626 }
627
628 disabled_any(){
629     for opt; do
630         disabled $opt && return 0
631     done
632     return 1
633 }
634
635 set_default(){
636     for opt; do
637         eval : \${$opt:=\$${opt}_default}
638     done
639 }
640
641 is_in(){
642     value=$1
643     shift
644     for var in $*; do
645         [ $var = $value ] && return 0
646     done
647     return 1
648 }
649
650 do_check_deps(){
651     for cfg; do
652         cfg="${cfg#!}"
653         enabled ${cfg}_checking && die "Circular dependency for $cfg."
654         disabled ${cfg}_checking && continue
655         enable ${cfg}_checking
656         append allopts $cfg
657
658         eval dep_all="\$${cfg}_deps"
659         eval dep_any="\$${cfg}_deps_any"
660         eval dep_sel="\$${cfg}_select"
661         eval dep_sgs="\$${cfg}_suggest"
662         eval dep_ifa="\$${cfg}_if"
663         eval dep_ifn="\$${cfg}_if_any"
664
665         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
666         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
667         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
668
669         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
670         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
671         enabled_all  $dep_all || disable $cfg
672         enabled_any  $dep_any || disable $cfg
673         disabled_any $dep_sel && disable $cfg
674
675         if enabled $cfg; then
676             enable_deep $dep_sel
677             enable_deep_weak $dep_sgs
678         fi
679
680         disable ${cfg}_checking
681     done
682 }
683
684 check_deps(){
685     unset allopts
686
687     do_check_deps "$@"
688
689     for cfg in $allopts; do
690         enabled $cfg || continue
691         eval dep_extralibs="\$${cfg}_extralibs"
692         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
693     done
694 }
695
696 print_config(){
697     pfx=$1
698     files=$2
699     shift 2
700     map 'eval echo "$v \${$v:-no}"' "$@" |
701     awk "BEGIN { split(\"$files\", files) }
702         {
703             c = \"$pfx\" toupper(\$1);
704             v = \$2;
705             sub(/yes/, 1, v);
706             sub(/no/,  0, v);
707             for (f in files) {
708                 file = files[f];
709                 if (file ~ /\\.h\$/) {
710                     printf(\"#define %s %d\\n\", c, v) >>file;
711                 } else if (file ~ /\\.asm\$/) {
712                     printf(\"%%define %s %d\\n\", c, v) >>file;
713                 } else if (file ~ /\\.mak\$/) {
714                     n = -v ? \"\" : \"!\";
715                     printf(\"%s%s=yes\\n\", n, c) >>file;
716                 } else if (file ~ /\\.texi\$/) {
717                     pre = -v ? \"\" : \"@c \";
718                     yesno = \$2;
719                     c2 = tolower(c);
720                     gsub(/_/, \"-\", c2);
721                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
722                 }
723             }
724         }"
725 }
726
727 print_enabled(){
728     suf=$1
729     shift
730     for v; do
731         enabled $v && printf "%s\n" ${v%$suf};
732     done
733 }
734
735 append(){
736     var=$1
737     shift
738     eval "$var=\"\$$var $*\""
739 }
740
741 prepend(){
742     var=$1
743     shift
744     eval "$var=\"$* \$$var\""
745 }
746
747 unique(){
748     var=$1
749     uniq_list=""
750     for tok in $(eval echo \$$var); do
751         uniq_list="$(filter_out $tok $uniq_list) $tok"
752     done
753     eval "$var=\"${uniq_list}\""
754 }
755
756 add_cppflags(){
757     append CPPFLAGS "$@"
758 }
759
760 add_cflags(){
761     append CFLAGS $($cflags_filter "$@")
762 }
763
764 add_cxxflags(){
765     append CXXFLAGS $($cflags_filter "$@")
766 }
767
768 add_asflags(){
769     append ASFLAGS $($asflags_filter "$@")
770 }
771
772 add_ldflags(){
773     append LDFLAGS $($ldflags_filter "$@")
774 }
775
776 add_ldexeflags(){
777     append LDEXEFLAGS $($ldflags_filter "$@")
778 }
779
780 add_stripflags(){
781     append ASMSTRIPFLAGS "$@"
782 }
783
784 add_extralibs(){
785     prepend extralibs $($ldflags_filter "$@")
786 }
787
788 add_host_cppflags(){
789     append host_cppflags "$@"
790 }
791
792 add_host_cflags(){
793     append host_cflags $($host_cflags_filter "$@")
794 }
795
796 add_host_ldflags(){
797     append host_ldflags $($host_ldflags_filter "$@")
798 }
799
800 add_compat(){
801     append compat_objs $1
802     shift
803     map 'add_cppflags -D$v' "$@"
804 }
805
806 check_cmd(){
807     log "$@"
808     "$@" >> $logfile 2>&1
809 }
810
811 check_stat(){
812     log check_stat "$@"
813     stat "$1" >> $logfile 2>&1
814 }
815
816 cc_o(){
817     eval printf '%s\\n' $CC_O
818 }
819
820 cc_e(){
821     eval printf '%s\\n' $CC_E
822 }
823
824 check_cc(){
825     log check_cc "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
829 }
830
831 check_cxx(){
832     log check_cxx "$@"
833     cat > $TMPCPP
834     log_file $TMPCPP
835     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
836 }
837
838 check_oc(){
839     log check_oc "$@"
840     cat > $TMPM
841     log_file $TMPM
842     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
843 }
844
845 check_cpp(){
846     log check_cpp "$@"
847     cat > $TMPC
848     log_file $TMPC
849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
850 }
851
852 as_o(){
853     eval printf '%s\\n' $AS_O
854 }
855
856 check_as(){
857     log check_as "$@"
858     cat > $TMPS
859     log_file $TMPS
860     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
861 }
862
863 check_inline_asm(){
864     log check_inline_asm "$@"
865     name="$1"
866     code="$2"
867     shift 2
868     disable $name
869     check_cc "$@" <<EOF && enable $name
870 void foo(void){ __asm__ volatile($code); }
871 EOF
872 }
873
874 check_insn(){
875     log check_insn "$@"
876     check_inline_asm ${1}_inline "\"$2\""
877     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
878 }
879
880 check_yasm(){
881     log check_yasm "$@"
882     echo "$1" > $TMPS
883     log_file $TMPS
884     shift 1
885     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
886 }
887
888 ld_o(){
889     eval printf '%s\\n' $LD_O
890 }
891
892 check_ld(){
893     log check_ld "$@"
894     type=$1
895     shift 1
896     flags=$(filter_out '-l*|*.so' $@)
897     libs=$(filter '-l*|*.so' $@)
898     check_$type $($cflags_filter $flags) || return
899     flags=$($ldflags_filter $flags)
900     libs=$($ldflags_filter $libs)
901     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
902 }
903
904 print_include(){
905     hdr=$1
906     test "${hdr%.h}" = "${hdr}" &&
907         echo "#include $hdr"    ||
908         echo "#include <$hdr>"
909 }
910
911 check_code(){
912     log check_code "$@"
913     check=$1
914     headers=$2
915     code=$3
916     shift 3
917     {
918         for hdr in $headers; do
919             print_include $hdr
920         done
921         echo "int main(void) { $code; return 0; }"
922     } | check_$check "$@"
923 }
924
925 check_cppflags(){
926     log check_cppflags "$@"
927     check_cc "$@" <<EOF && append CPPFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_cflags(){
933     log test_cflags "$@"
934     set -- $($cflags_filter "$@")
935     check_cc "$@" <<EOF
936 int x;
937 EOF
938 }
939
940 check_cflags(){
941     log check_cflags "$@"
942     test_cflags "$@" && add_cflags "$@"
943 }
944
945 check_cxxflags(){
946     log check_cxxflags "$@"
947     set -- $($cflags_filter "$@")
948     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
949 int x;
950 EOF
951 }
952
953 test_ldflags(){
954     log test_ldflags "$@"
955     check_ld "cc" "$@" <<EOF
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_ldflags(){
961     log check_ldflags "$@"
962     test_ldflags "$@" && add_ldflags "$@"
963 }
964
965 test_stripflags(){
966     log test_stripflags "$@"
967     # call check_cc to get a fresh TMPO
968     check_cc <<EOF
969 int main(void) { return 0; }
970 EOF
971     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
972 }
973
974 check_stripflags(){
975     log check_stripflags "$@"
976     test_stripflags "$@" && add_stripflags "$@"
977 }
978
979 check_header(){
980     log check_header "$@"
981     header=$1
982     shift
983     disable_safe $header
984     check_cpp "$@" <<EOF && enable_safe $header
985 #include <$header>
986 int x;
987 EOF
988 }
989
990 check_header_oc(){
991     log check_header_oc "$@"
992     rm -f -- "$TMPO"
993     header=$1
994     shift
995     disable_safe $header
996     {
997        echo "#include <$header>"
998        echo "int main(void) { return 0; }"
999     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1000 }
1001
1002 check_func(){
1003     log check_func "$@"
1004     func=$1
1005     shift
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 extern int $func();
1009 int main(void){ $func(); }
1010 EOF
1011 }
1012
1013 check_mathfunc(){
1014     log check_mathfunc "$@"
1015     func=$1
1016     narg=$2
1017     shift 2
1018     test $narg = 2 && args="f, g" || args="f"
1019     disable $func
1020     check_ld "cc" "$@" <<EOF && enable $func
1021 #include <math.h>
1022 float foo(float f, float g) { return $func($args); }
1023 int main(void){ return (int) foo; }
1024 EOF
1025 }
1026
1027 check_func_headers(){
1028     log check_func_headers "$@"
1029     headers=$1
1030     funcs=$2
1031     shift 2
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         for func in $funcs; do
1037             echo "long check_$func(void) { return (long) $func; }"
1038         done
1039         echo "int main(void) { return 0; }"
1040     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_class_headers_cpp(){
1044     log check_class_headers_cpp "$@"
1045     headers=$1
1046     classes=$2
1047     shift 2
1048     {
1049         for hdr in $headers; do
1050             echo "#include <$hdr>"
1051         done
1052         echo "int main(void) { "
1053         i=1
1054         for class in $classes; do
1055             echo "$class obj$i;"
1056             i=$(expr $i + 1)
1057         done
1058         echo "return 0; }"
1059     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1060 }
1061
1062 check_cpp_condition(){
1063     log check_cpp_condition "$@"
1064     header=$1
1065     condition=$2
1066     shift 2
1067     check_cpp "$@" <<EOF
1068 #include <$header>
1069 #if !($condition)
1070 #error "unsatisfied condition: $condition"
1071 #endif
1072 EOF
1073 }
1074
1075 check_lib(){
1076     log check_lib "$@"
1077     header="$1"
1078     func="$2"
1079     shift 2
1080     check_header $header && check_func $func "$@" && add_extralibs "$@"
1081 }
1082
1083 check_lib2(){
1084     log check_lib2 "$@"
1085     headers="$1"
1086     funcs="$2"
1087     shift 2
1088     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1089 }
1090
1091 check_lib_cpp(){
1092     log check_lib_cpp "$@"
1093     headers="$1"
1094     classes="$2"
1095     shift 2
1096     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1097 }
1098
1099 check_pkg_config(){
1100     log check_pkg_config "$@"
1101     pkgandversion="$1"
1102     pkg="${1%% *}"
1103     headers="$2"
1104     funcs="$3"
1105     shift 3
1106     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1107     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1108     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1109     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1110         set_safe ${pkg}_cflags $pkg_cflags   &&
1111         set_safe ${pkg}_libs   $pkg_libs
1112 }
1113
1114 check_exec(){
1115     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1116 }
1117
1118 check_exec_crash(){
1119     code=$(cat)
1120
1121     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1122     # are safe but may not be available everywhere.  Thus we use
1123     # raise(SIGTERM) instead.  The check is run in a subshell so we
1124     # can redirect the "Terminated" message from the shell.  SIGBUS
1125     # is not defined by standard C so it is used conditionally.
1126
1127     (check_exec "$@") >> $logfile 2>&1 <<EOF
1128 #include <signal.h>
1129 static void sighandler(int sig){
1130     raise(SIGTERM);
1131 }
1132 int foo(void){
1133     $code
1134 }
1135 int (*func_ptr)(void) = foo;
1136 int main(void){
1137     signal(SIGILL, sighandler);
1138     signal(SIGFPE, sighandler);
1139     signal(SIGSEGV, sighandler);
1140 #ifdef SIGBUS
1141     signal(SIGBUS, sighandler);
1142 #endif
1143     return func_ptr();
1144 }
1145 EOF
1146 }
1147
1148 check_type(){
1149     log check_type "$@"
1150     headers=$1
1151     type=$2
1152     shift 2
1153     disable_safe "$type"
1154     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1155 }
1156
1157 check_struct(){
1158     log check_struct "$@"
1159     headers=$1
1160     struct=$2
1161     member=$3
1162     shift 3
1163     disable_safe "${struct}_${member}"
1164     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1165         enable_safe "${struct}_${member}"
1166 }
1167
1168 check_builtin(){
1169     log check_builtin "$@"
1170     name=$1
1171     headers=$2
1172     builtin=$3
1173     shift 3
1174     disable "$name"
1175     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1176 }
1177
1178 check_compile_assert(){
1179     log check_compile_assert "$@"
1180     name=$1
1181     headers=$2
1182     condition=$3
1183     shift 3
1184     disable "$name"
1185     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1186 }
1187
1188 require(){
1189     name="$1"
1190     header="$2"
1191     func="$3"
1192     shift 3
1193     check_lib $header $func "$@" || die "ERROR: $name not found"
1194 }
1195
1196 require2(){
1197     name="$1"
1198     headers="$2"
1199     func="$3"
1200     shift 3
1201     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1202 }
1203
1204 require_cpp(){
1205     name="$1"
1206     headers="$2"
1207     classes="$3"
1208     shift 3
1209     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1210 }
1211
1212 use_pkg_config(){
1213     pkg="$1"
1214     check_pkg_config "$@" || return 1
1215     add_cflags    $(get_safe ${pkg}_cflags)
1216     add_extralibs $(get_safe ${pkg}_libs)
1217 }
1218
1219 require_pkg_config(){
1220     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1221 }
1222
1223 require_libfreetype(){
1224     log require_libfreetype "$@"
1225     pkg="freetype2"
1226     check_cmd $pkg_config --exists --print-errors $pkg \
1227       || die "ERROR: $pkg not found"
1228     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1229     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1230     {
1231         echo "#include <ft2build.h>"
1232         echo "#include FT_FREETYPE_H"
1233         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1234         echo "int main(void) { return 0; }"
1235     } | check_ld "cc" $pkg_cflags $pkg_libs \
1236       && set_safe ${pkg}_cflags $pkg_cflags \
1237       && set_safe ${pkg}_libs   $pkg_libs \
1238       || die "ERROR: $pkg not found"
1239     add_cflags    $(get_safe ${pkg}_cflags)
1240     add_extralibs $(get_safe ${pkg}_libs)
1241 }
1242
1243 hostcc_e(){
1244     eval printf '%s\\n' $HOSTCC_E
1245 }
1246
1247 hostcc_o(){
1248     eval printf '%s\\n' $HOSTCC_O
1249 }
1250
1251 check_host_cc(){
1252     log check_host_cc "$@"
1253     cat > $TMPC
1254     log_file $TMPC
1255     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1256 }
1257
1258 check_host_cpp(){
1259     log check_host_cpp "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1263 }
1264
1265 check_host_cppflags(){
1266     log check_host_cppflags "$@"
1267     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1268 int x;
1269 EOF
1270 }
1271
1272 check_host_cflags(){
1273     log check_host_cflags "$@"
1274     set -- $($host_cflags_filter "$@")
1275     check_host_cc "$@" <<EOF && append host_cflags "$@"
1276 int x;
1277 EOF
1278 }
1279
1280 check_host_cpp_condition(){
1281     log check_host_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     check_host_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 apply(){
1294     file=$1
1295     shift
1296     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1297 }
1298
1299 cp_if_changed(){
1300     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1301     mkdir -p "$(dirname $2)"
1302     $cp_f "$1" "$2"
1303 }
1304
1305 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1306 # system-dependent things.
1307
1308 COMPONENT_LIST="
1309     bsfs
1310     decoders
1311     demuxers
1312     encoders
1313     filters
1314     hwaccels
1315     indevs
1316     muxers
1317     outdevs
1318     parsers
1319     protocols
1320 "
1321
1322 EXAMPLE_LIST="
1323     avio_reading_example
1324     decoding_encoding_example
1325     demuxing_decoding_example
1326     extract_mvs_example
1327     filter_audio_example
1328     filtering_audio_example
1329     filtering_video_example
1330     metadata_example
1331     muxing_example
1332     remuxing_example
1333     resampling_audio_example
1334     scaling_video_example
1335     transcode_aac_example
1336     transcoding_example
1337 "
1338
1339 EXTERNAL_LIBRARY_LIST="
1340     avisynth
1341     bzlib
1342     crystalhd
1343     decklink
1344     frei0r
1345     gnutls
1346     iconv
1347     ladspa
1348     libaacplus
1349     libass
1350     libbluray
1351     libbs2b
1352     libcaca
1353     libcdio
1354     libcelt
1355     libdc1394
1356     libfaac
1357     libfdk_aac
1358     libflite
1359     libfontconfig
1360     libfreetype
1361     libfribidi
1362     libgme
1363     libgsm
1364     libiec61883
1365     libilbc
1366     libmfx
1367     libmodplug
1368     libmp3lame
1369     libnut
1370     libopencore_amrnb
1371     libopencore_amrwb
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     libquvi
1378     librtmp
1379     libschroedinger
1380     libshine
1381     libsmbclient
1382     libsoxr
1383     libspeex
1384     libssh
1385     libstagefright_h264
1386     libtheora
1387     libtwolame
1388     libutvideo
1389     libv4l2
1390     libvidstab
1391     libvo_aacenc
1392     libvo_amrwbenc
1393     libvorbis
1394     libvpx
1395     libwavpack
1396     libwebp
1397     libx264
1398     libx265
1399     libxavs
1400     libxcb
1401     libxcb_shm
1402     libxcb_shape
1403     libxcb_xfixes
1404     libxvid
1405     libzmq
1406     libzvbi
1407     lzma
1408     nvenc
1409     openal
1410     opencl
1411     opengl
1412     openssl
1413     sdl
1414     x11grab
1415     xlib
1416     zlib
1417 "
1418
1419 DOCUMENT_LIST="
1420     doc
1421     htmlpages
1422     manpages
1423     podpages
1424     txtpages
1425 "
1426
1427 FEATURE_LIST="
1428     ftrapv
1429     gray
1430     hardcoded_tables
1431     runtime_cpudetect
1432     safe_bitstream_reader
1433     shared
1434     small
1435     static
1436     swscale_alpha
1437 "
1438
1439 HWACCEL_LIST="
1440     dxva2
1441     vaapi
1442     vda
1443     vdpau
1444     xvmc
1445 "
1446
1447 LIBRARY_LIST="
1448     avcodec
1449     avdevice
1450     avfilter
1451     avformat
1452     avresample
1453     avutil
1454     postproc
1455     swresample
1456     swscale
1457 "
1458
1459 LICENSE_LIST="
1460     gpl
1461     nonfree
1462     version3
1463 "
1464
1465 PROGRAM_LIST="
1466     ffplay
1467     ffprobe
1468     ffserver
1469     ffmpeg
1470 "
1471
1472 SUBSYSTEM_LIST="
1473     dct
1474     dwt
1475     error_resilience
1476     faan
1477     fast_unaligned
1478     fft
1479     lsp
1480     lzo
1481     mdct
1482     pixelutils
1483     network
1484     qsv
1485     rdft
1486 "
1487
1488 CONFIG_LIST="
1489     $COMPONENT_LIST
1490     $DOCUMENT_LIST
1491     $EXAMPLE_LIST
1492     $EXTERNAL_LIBRARY_LIST
1493     $FEATURE_LIST
1494     $HWACCEL_LIST
1495     $LICENSE_LIST
1496     $LIBRARY_LIST
1497     $PROGRAM_LIST
1498     $SUBSYSTEM_LIST
1499     fontconfig
1500     incompatible_libav_abi
1501     memalign_hack
1502     memory_poisoning
1503     neon_clobber_test
1504     pic
1505     pod2man
1506     raise_major
1507     thumb
1508     xmm_clobber_test
1509 "
1510
1511 THREADS_LIST="
1512     pthreads
1513     os2threads
1514     w32threads
1515 "
1516
1517 ATOMICS_LIST="
1518     atomics_gcc
1519     atomics_suncc
1520     atomics_win32
1521 "
1522
1523 ARCH_LIST="
1524     aarch64
1525     alpha
1526     arm
1527     avr32
1528     avr32_ap
1529     avr32_uc
1530     bfin
1531     ia64
1532     m68k
1533     mips
1534     mips64
1535     parisc
1536     ppc
1537     ppc64
1538     s390
1539     sh4
1540     sparc
1541     sparc64
1542     tilegx
1543     tilepro
1544     tomi
1545     x86
1546     x86_32
1547     x86_64
1548 "
1549
1550 ARCH_EXT_LIST_ARM="
1551     armv5te
1552     armv6
1553     armv6t2
1554     armv8
1555     neon
1556     vfp
1557     vfpv3
1558     setend
1559 "
1560
1561 ARCH_EXT_LIST_MIPS="
1562     mipsfpu
1563     mips32r2
1564     mipsdspr1
1565     mipsdspr2
1566 "
1567
1568 ARCH_EXT_LIST_X86_SIMD="
1569     amd3dnow
1570     amd3dnowext
1571     avx
1572     avx2
1573     fma3
1574     fma4
1575     mmx
1576     mmxext
1577     sse
1578     sse2
1579     sse3
1580     sse4
1581     sse42
1582     ssse3
1583     xop
1584 "
1585
1586 ARCH_EXT_LIST_PPC="
1587     altivec
1588     dcbzl
1589     ldbrx
1590     ppc4xx
1591     vsx
1592 "
1593
1594 ARCH_EXT_LIST_X86="
1595     $ARCH_EXT_LIST_X86_SIMD
1596     cpunop
1597     i686
1598 "
1599
1600 ARCH_EXT_LIST="
1601     $ARCH_EXT_LIST_ARM
1602     $ARCH_EXT_LIST_PPC
1603     $ARCH_EXT_LIST_X86
1604     $ARCH_EXT_LIST_MIPS
1605     loongson
1606 "
1607
1608 ARCH_FEATURES="
1609     aligned_stack
1610     fast_64bit
1611     fast_clz
1612     fast_cmov
1613     local_aligned_8
1614     local_aligned_16
1615     local_aligned_32
1616     simd_align_16
1617 "
1618
1619 BUILTIN_LIST="
1620     atomic_cas_ptr
1621     atomic_compare_exchange
1622     machine_rw_barrier
1623     MemoryBarrier
1624     mm_empty
1625     rdtsc
1626     sarestart
1627     sync_val_compare_and_swap
1628 "
1629 HAVE_LIST_CMDLINE="
1630     inline_asm
1631     symver
1632     yasm
1633 "
1634
1635 HAVE_LIST_PUB="
1636     bigendian
1637     fast_unaligned
1638     incompatible_libav_abi
1639 "
1640
1641 HEADERS_LIST="
1642     alsa_asoundlib_h
1643     altivec_h
1644     arpa_inet_h
1645     asm_types_h
1646     cdio_paranoia_h
1647     cdio_paranoia_paranoia_h
1648     dev_bktr_ioctl_bt848_h
1649     dev_bktr_ioctl_meteor_h
1650     dev_ic_bt8xx_h
1651     dev_video_bktr_ioctl_bt848_h
1652     dev_video_meteor_ioctl_meteor_h
1653     direct_h
1654     dlfcn_h
1655     dxva_h
1656     ES2_gl_h
1657     gsm_h
1658     io_h
1659     mach_mach_time_h
1660     machine_ioctl_bt848_h
1661     machine_ioctl_meteor_h
1662     malloc_h
1663     openjpeg_1_5_openjpeg_h
1664     OpenGL_gl3_h
1665     poll_h
1666     sndio_h
1667     soundcard_h
1668     sys_mman_h
1669     sys_param_h
1670     sys_resource_h
1671     sys_select_h
1672     sys_soundcard_h
1673     sys_time_h
1674     sys_un_h
1675     sys_videoio_h
1676     termios_h
1677     udplite_h
1678     unistd_h
1679     windows_h
1680     winsock2_h
1681 "
1682
1683 INTRINSICS_LIST="
1684     intrinsics_neon
1685 "
1686
1687 MATH_FUNCS="
1688     atanf
1689     atan2f
1690     cbrt
1691     cbrtf
1692     cosf
1693     exp2
1694     exp2f
1695     expf
1696     isinf
1697     isnan
1698     ldexpf
1699     llrint
1700     llrintf
1701     log2
1702     log2f
1703     log10f
1704     lrint
1705     lrintf
1706     powf
1707     rint
1708     round
1709     roundf
1710     sinf
1711     trunc
1712     truncf
1713 "
1714
1715 SYSTEM_FUNCS="
1716     access
1717     aligned_malloc
1718     clock_gettime
1719     closesocket
1720     CommandLineToArgvW
1721     CoTaskMemFree
1722     CryptGenRandom
1723     dlopen
1724     fcntl
1725     flt_lim
1726     fork
1727     getaddrinfo
1728     gethrtime
1729     getopt
1730     GetProcessAffinityMask
1731     GetProcessMemoryInfo
1732     GetProcessTimes
1733     getrusage
1734     getservbyport
1735     GetSystemTimeAsFileTime
1736     gettimeofday
1737     glob
1738     glXGetProcAddress
1739     gmtime_r
1740     inet_aton
1741     isatty
1742     jack_port_get_latency_range
1743     kbhit
1744     localtime_r
1745     lzo1x_999_compress
1746     mach_absolute_time
1747     MapViewOfFile
1748     memalign
1749     mkstemp
1750     mmap
1751     mprotect
1752     nanosleep
1753     PeekNamedPipe
1754     posix_memalign
1755     pthread_cancel
1756     sched_getaffinity
1757     SetConsoleTextAttribute
1758     setmode
1759     setrlimit
1760     Sleep
1761     strerror_r
1762     sysconf
1763     sysctl
1764     usleep
1765     VirtualAlloc
1766     wglGetProcAddress
1767 "
1768
1769 TOOLCHAIN_FEATURES="
1770     as_dn_directive
1771     as_func
1772     asm_mod_q
1773     attribute_may_alias
1774     attribute_packed
1775     ebp_available
1776     ebx_available
1777     gnu_as
1778     gnu_windres
1779     ibm_asm
1780     inline_asm_labels
1781     inline_asm_nonlocal_labels
1782     inline_asm_direct_symbol_refs
1783     pragma_deprecated
1784     rsync_contimeout
1785     symver_asm_label
1786     symver_gnu_asm
1787     vfp_args
1788     xform_asm
1789     xmm_clobbers
1790 "
1791
1792 TYPES_LIST="
1793     CONDITION_VARIABLE_Ptr
1794     DXVA_PicParams_HEVC
1795     socklen_t
1796     struct_addrinfo
1797     struct_group_source_req
1798     struct_ip_mreq_source
1799     struct_ipv6_mreq
1800     struct_pollfd
1801     struct_rusage_ru_maxrss
1802     struct_sctp_event_subscribe
1803     struct_sockaddr_in6
1804     struct_sockaddr_sa_len
1805     struct_sockaddr_storage
1806     struct_stat_st_mtim_tv_nsec
1807     struct_v4l2_frmivalenum_discrete
1808 "
1809
1810 HAVE_LIST="
1811     $ARCH_EXT_LIST
1812     $(add_suffix _external $ARCH_EXT_LIST)
1813     $(add_suffix _inline   $ARCH_EXT_LIST)
1814     $ARCH_FEATURES
1815     $ATOMICS_LIST
1816     $BUILTIN_LIST
1817     $HAVE_LIST_CMDLINE
1818     $HAVE_LIST_PUB
1819     $HEADERS_LIST
1820     $INTRINSICS_LIST
1821     $MATH_FUNCS
1822     $SYSTEM_FUNCS
1823     $THREADS_LIST
1824     $TOOLCHAIN_FEATURES
1825     $TYPES_LIST
1826     atomics_native
1827     dos_paths
1828     dxva2api_cobj
1829     dxva2_lib
1830     libc_msvcrt
1831     libdc1394_1
1832     libdc1394_2
1833     makeinfo
1834     makeinfo_html
1835     perl
1836     pod2man
1837     sdl
1838     section_data_rel_ro
1839     texi2html
1840     threads
1841     vdpau_x11
1842     xlib
1843 "
1844
1845 # options emitted with CONFIG_ prefix but not available on the command line
1846 CONFIG_EXTRA="
1847     aandcttables
1848     ac3dsp
1849     audio_frame_queue
1850     audiodsp
1851     blockdsp
1852     bswapdsp
1853     cabac
1854     dvprofile
1855     exif
1856     faandct
1857     faanidct
1858     fdctdsp
1859     fmtconvert
1860     frame_thread_encoder
1861     gcrypt
1862     golomb
1863     gplv3
1864     h263dsp
1865     h264chroma
1866     h264dsp
1867     h264pred
1868     h264qpel
1869     hpeldsp
1870     huffman
1871     huffyuvdsp
1872     huffyuvencdsp
1873     idctdsp
1874     iirfilter
1875     imdct15
1876     intrax8
1877     lgplv3
1878     llauddsp
1879     llviddsp
1880     lpc
1881     me_cmp
1882     mpeg_er
1883     mpegaudio
1884     mpegaudiodsp
1885     mpegvideo
1886     mpegvideoenc
1887     nettle
1888     pixblockdsp
1889     qpeldsp
1890     rangecoder
1891     riffdec
1892     riffenc
1893     rtpdec
1894     rtpenc_chain
1895     sinewin
1896     startcode
1897     tpeldsp
1898     videodsp
1899     vp3dsp
1900     wma_freqs
1901 "
1902
1903 CMDLINE_SELECT="
1904     $ARCH_EXT_LIST
1905     $CONFIG_LIST
1906     $HAVE_LIST_CMDLINE
1907     $THREADS_LIST
1908     asm
1909     cross_compile
1910     debug
1911     extra_warnings
1912     logging
1913     lto
1914     optimizations
1915     rpath
1916     stripping
1917 "
1918
1919 PATHS_LIST="
1920     bindir
1921     datadir
1922     docdir
1923     incdir
1924     libdir
1925     mandir
1926     prefix
1927     shlibdir
1928 "
1929
1930 CMDLINE_SET="
1931     $PATHS_LIST
1932     ar
1933     arch
1934     as
1935     assert_level
1936     build_suffix
1937     cc
1938     cpu
1939     cross_prefix
1940     cxx
1941     dep_cc
1942     doxygen
1943     extra_version
1944     gas
1945     host_cc
1946     host_cflags
1947     host_ld
1948     host_ldflags
1949     host_libs
1950     host_os
1951     install
1952     ld
1953     logfile
1954     malloc_prefix
1955     nm
1956     optflags
1957     pkg_config
1958     pkg_config_flags
1959     progs_suffix
1960     random_seed
1961     ranlib
1962     samples
1963     strip
1964     sws_max_filter_size
1965     sysinclude
1966     sysroot
1967     target_exec
1968     target_os
1969     target_path
1970     target_samples
1971     tempprefix
1972     toolchain
1973     valgrind
1974     yasmexe
1975 "
1976
1977 CMDLINE_APPEND="
1978     extra_cflags
1979     extra_cxxflags
1980     host_cppflags
1981 "
1982
1983 # code dependency declarations
1984
1985 # architecture extensions
1986
1987 armv5te_deps="arm"
1988 armv6_deps="arm"
1989 armv6t2_deps="arm"
1990 armv8_deps="aarch64"
1991 neon_deps_any="aarch64 arm"
1992 intrinsics_neon_deps="neon"
1993 vfp_deps_any="aarch64 arm"
1994 vfpv3_deps="vfp"
1995 setend_deps="arm"
1996
1997 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1998
1999 mipsfpu_deps="mips"
2000 mips32r2_deps="mips"
2001 mipsdspr1_deps="mips"
2002 mipsdspr2_deps="mips"
2003
2004 altivec_deps="ppc"
2005 ppc4xx_deps="ppc"
2006 vsx_deps="ppc"
2007
2008 cpunop_deps="i686"
2009 x86_64_select="i686"
2010 x86_64_suggest="fast_cmov"
2011
2012 amd3dnow_deps="mmx"
2013 amd3dnowext_deps="amd3dnow"
2014 i686_deps="x86"
2015 mmx_deps="x86"
2016 mmxext_deps="mmx"
2017 sse_deps="mmxext"
2018 sse2_deps="sse"
2019 sse3_deps="sse2"
2020 ssse3_deps="sse3"
2021 sse4_deps="ssse3"
2022 sse42_deps="sse4"
2023 avx_deps="sse42"
2024 xop_deps="avx"
2025 fma3_deps="avx"
2026 fma4_deps="avx"
2027 avx2_deps="avx"
2028
2029 mmx_external_deps="yasm"
2030 mmx_inline_deps="inline_asm"
2031 mmx_suggest="mmx_external mmx_inline"
2032
2033 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2034     eval dep=\$${ext}_deps
2035     eval ${ext}_external_deps='"${dep}_external"'
2036     eval ${ext}_inline_deps='"${dep}_inline"'
2037     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2038 done
2039
2040 aligned_stack_if_any="aarch64 ppc x86"
2041 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2042 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2043 fast_unaligned_if_any="aarch64 ppc x86"
2044 simd_align_16_if_any="altivec neon sse"
2045
2046 # system capabilities
2047
2048 symver_if_any="symver_asm_label symver_gnu_asm"
2049
2050 # threading support
2051 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2052 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2053 atomics_win32_if="MemoryBarrier"
2054 atomics_native_if_any="$ATOMICS_LIST"
2055 w32threads_deps="atomics_native"
2056 threads_if_any="$THREADS_LIST"
2057
2058 # subsystems
2059 dct_select="rdft"
2060 error_resilience_select="me_cmp"
2061 faandct_deps="faan fdctdsp"
2062 faanidct_deps="faan idctdsp"
2063 frame_thread_encoder_deps="encoders threads"
2064 intrax8_select="error_resilience"
2065 mdct_select="fft"
2066 rdft_select="fft"
2067 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2068 mpeg_er_select="error_resilience"
2069 mpegaudio_select="mpegaudiodsp"
2070 mpegaudiodsp_select="dct"
2071 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2072 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2073
2074 # decoders / encoders
2075 aac_decoder_select="imdct15 mdct sinewin"
2076 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2077 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2078 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2079 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2080 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2081 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2082 aic_decoder_select="golomb idctdsp"
2083 alac_encoder_select="lpc"
2084 als_decoder_select="bswapdsp"
2085 amrnb_decoder_select="lsp"
2086 amrwb_decoder_select="lsp"
2087 amv_decoder_select="sp5x_decoder exif"
2088 amv_encoder_select="aandcttables mpegvideoenc"
2089 ape_decoder_select="bswapdsp llauddsp"
2090 apng_decoder_select="zlib"
2091 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2092 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2093 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2094 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2095 atrac1_decoder_select="mdct sinewin"
2096 atrac3_decoder_select="mdct"
2097 atrac3p_decoder_select="mdct sinewin"
2098 avrn_decoder_select="exif"
2099 bink_decoder_select="blockdsp hpeldsp"
2100 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2101 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2102 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2103 cllc_decoder_select="bswapdsp"
2104 comfortnoise_encoder_select="lpc"
2105 cook_decoder_select="audiodsp mdct sinewin"
2106 cscd_decoder_select="lzo"
2107 cscd_decoder_suggest="zlib"
2108 dca_decoder_select="fmtconvert mdct"
2109 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2110 dnxhd_decoder_select="blockdsp idctdsp"
2111 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2112 dvvideo_decoder_select="dvprofile idctdsp"
2113 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2114 dxa_decoder_select="zlib"
2115 eac3_decoder_select="ac3_decoder"
2116 eac3_encoder_select="ac3_encoder"
2117 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2118 eatgq_decoder_select="aandcttables"
2119 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2120 exr_decoder_select="zlib"
2121 ffv1_decoder_select="golomb rangecoder"
2122 ffv1_encoder_select="rangecoder"
2123 ffvhuff_decoder_select="huffyuv_decoder"
2124 ffvhuff_encoder_select="huffyuv_encoder"
2125 fic_decoder_select="golomb"
2126 flac_decoder_select="golomb"
2127 flac_encoder_select="bswapdsp golomb lpc"
2128 flashsv_decoder_select="zlib"
2129 flashsv_encoder_select="zlib"
2130 flashsv2_encoder_select="zlib"
2131 flashsv2_decoder_select="zlib"
2132 flv_decoder_select="h263_decoder"
2133 flv_encoder_select="h263_encoder"
2134 fourxm_decoder_select="blockdsp bswapdsp"
2135 fraps_decoder_select="bswapdsp huffman"
2136 g2m_decoder_select="blockdsp idctdsp zlib"
2137 g729_decoder_select="audiodsp"
2138 h261_decoder_select="mpeg_er mpegvideo"
2139 h261_encoder_select="aandcttables mpegvideoenc"
2140 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2141 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2142 h263i_decoder_select="h263_decoder"
2143 h263p_encoder_select="h263_encoder"
2144 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2145 h264_decoder_suggest="error_resilience"
2146 h264_qsv_decoder_deps="libmfx"
2147 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2148 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2149 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2150 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2151 iac_decoder_select="imc_decoder"
2152 imc_decoder_select="bswapdsp fft mdct sinewin"
2153 indeo3_decoder_select="hpeldsp"
2154 interplay_video_decoder_select="hpeldsp"
2155 jpegls_decoder_select="golomb mjpeg_decoder"
2156 jpegls_encoder_select="golomb"
2157 jv_decoder_select="blockdsp"
2158 lagarith_decoder_select="huffyuvdsp"
2159 ljpeg_encoder_select="aandcttables idctdsp"
2160 loco_decoder_select="golomb"
2161 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2162 metasound_decoder_select="lsp mdct sinewin"
2163 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2164 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2165 mjpeg_encoder_select="aandcttables mpegvideoenc"
2166 mjpegb_decoder_select="mjpeg_decoder"
2167 mlp_decoder_select="mlp_parser"
2168 motionpixels_decoder_select="bswapdsp"
2169 mp1_decoder_select="mpegaudio"
2170 mp1float_decoder_select="mpegaudio"
2171 mp2_decoder_select="mpegaudio"
2172 mp2float_decoder_select="mpegaudio"
2173 mp3_decoder_select="mpegaudio"
2174 mp3adu_decoder_select="mpegaudio"
2175 mp3adufloat_decoder_select="mpegaudio"
2176 mp3float_decoder_select="mpegaudio"
2177 mp3on4_decoder_select="mpegaudio"
2178 mp3on4float_decoder_select="mpegaudio"
2179 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2180 mpc8_decoder_select="mpegaudiodsp"
2181 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2182 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2183 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2184 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2185 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2186 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2187 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2188 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2189 mpeg4_encoder_select="h263_encoder"
2190 msmpeg4v1_decoder_select="h263_decoder"
2191 msmpeg4v2_decoder_select="h263_decoder"
2192 msmpeg4v2_encoder_select="h263_encoder"
2193 msmpeg4v3_decoder_select="h263_decoder"
2194 msmpeg4v3_encoder_select="h263_encoder"
2195 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2196 mxpeg_decoder_select="mjpeg_decoder"
2197 nellymoser_decoder_select="mdct sinewin"
2198 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2199 nuv_decoder_select="idctdsp lzo"
2200 on2avc_decoder_select="mdct"
2201 opus_decoder_deps="swresample"
2202 opus_decoder_select="imdct15"
2203 png_decoder_select="zlib"
2204 png_encoder_select="huffyuvencdsp zlib"
2205 prores_decoder_select="blockdsp idctdsp"
2206 prores_encoder_select="fdctdsp"
2207 qcelp_decoder_select="lsp"
2208 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2209 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2210 ra_144_decoder_select="audiodsp"
2211 ralf_decoder_select="golomb"
2212 rawvideo_decoder_select="bswapdsp"
2213 rtjpeg_decoder_select="me_cmp"
2214 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2215 rv10_encoder_select="h263_encoder"
2216 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2217 rv20_encoder_select="h263_encoder"
2218 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2219 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2220 shorten_decoder_select="golomb"
2221 sipr_decoder_select="lsp"
2222 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2223 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2224 sonic_decoder_select="golomb rangecoder"
2225 sonic_encoder_select="golomb rangecoder"
2226 sonic_ls_encoder_select="golomb rangecoder"
2227 sp5x_decoder_select="mjpeg_decoder"
2228 svq1_decoder_select="hpeldsp"
2229 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2230 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2231 svq3_decoder_suggest="zlib"
2232 tak_decoder_select="audiodsp"
2233 theora_decoder_select="vp3_decoder"
2234 thp_decoder_select="mjpeg_decoder"
2235 tiff_decoder_suggest="zlib lzma"
2236 tiff_encoder_suggest="zlib"
2237 truehd_decoder_select="mlp_parser"
2238 truemotion2_decoder_select="bswapdsp"
2239 truespeech_decoder_select="bswapdsp"
2240 tscc_decoder_select="zlib"
2241 twinvq_decoder_select="mdct lsp sinewin"
2242 utvideo_decoder_select="bswapdsp"
2243 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2244 vble_decoder_select="huffyuvdsp"
2245 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2246 vc1image_decoder_select="vc1_decoder"
2247 vorbis_decoder_select="mdct"
2248 vorbis_encoder_select="mdct"
2249 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2250 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2251 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2252 vp6a_decoder_select="vp6_decoder"
2253 vp6f_decoder_select="vp6_decoder"
2254 vp7_decoder_select="h264pred videodsp"
2255 vp8_decoder_select="h264pred videodsp"
2256 vp9_decoder_select="videodsp vp9_parser"
2257 webp_decoder_select="vp8_decoder"
2258 wmalossless_decoder_select="llauddsp"
2259 wmapro_decoder_select="mdct sinewin wma_freqs"
2260 wmav1_decoder_select="mdct sinewin wma_freqs"
2261 wmav1_encoder_select="mdct sinewin wma_freqs"
2262 wmav2_decoder_select="mdct sinewin wma_freqs"
2263 wmav2_encoder_select="mdct sinewin wma_freqs"
2264 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2265 wmv1_decoder_select="h263_decoder"
2266 wmv1_encoder_select="h263_encoder"
2267 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2268 wmv2_encoder_select="h263_encoder"
2269 wmv3_decoder_select="vc1_decoder"
2270 wmv3image_decoder_select="wmv3_decoder"
2271 zerocodec_decoder_select="zlib"
2272 zlib_decoder_select="zlib"
2273 zlib_encoder_select="zlib"
2274 zmbv_decoder_select="zlib"
2275 zmbv_encoder_select="zlib"
2276
2277 # hardware accelerators
2278 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2279 dxva2_deps="dxva2api_h"
2280 vaapi_deps="va_va_h"
2281 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2282 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2283 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2284 xvmc_deps="X11_extensions_XvMClib_h"
2285
2286 h263_vaapi_hwaccel_deps="vaapi"
2287 h263_vaapi_hwaccel_select="h263_decoder"
2288 h263_vdpau_hwaccel_deps="vdpau"
2289 h263_vdpau_hwaccel_select="h263_decoder"
2290 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2291 h264_dxva2_hwaccel_deps="dxva2"
2292 h264_dxva2_hwaccel_select="h264_decoder"
2293 h264_qsv_hwaccel_deps="libmfx"
2294 h264_vaapi_hwaccel_deps="vaapi"
2295 h264_vaapi_hwaccel_select="h264_decoder"
2296 h264_vda_decoder_deps="vda"
2297 h264_vda_decoder_select="h264_decoder"
2298 h264_vda_hwaccel_deps="vda"
2299 h264_vda_hwaccel_select="h264_decoder"
2300 h264_vda_old_hwaccel_deps="vda"
2301 h264_vda_old_hwaccel_select="h264_decoder"
2302 h264_vdpau_decoder_deps="vdpau"
2303 h264_vdpau_decoder_select="h264_decoder"
2304 h264_vdpau_hwaccel_deps="vdpau"
2305 h264_vdpau_hwaccel_select="h264_decoder"
2306 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2307 hevc_dxva2_hwaccel_select="hevc_decoder"
2308 mpeg_vdpau_decoder_deps="vdpau"
2309 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2310 mpeg_xvmc_hwaccel_deps="xvmc"
2311 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2312 mpeg1_vdpau_decoder_deps="vdpau"
2313 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2314 mpeg1_vdpau_hwaccel_deps="vdpau"
2315 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2316 mpeg1_xvmc_hwaccel_deps="xvmc"
2317 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2318 mpeg2_crystalhd_decoder_select="crystalhd"
2319 mpeg2_dxva2_hwaccel_deps="dxva2"
2320 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2321 mpeg2_vaapi_hwaccel_deps="vaapi"
2322 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2323 mpeg2_vdpau_hwaccel_deps="vdpau"
2324 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2325 mpeg2_xvmc_hwaccel_deps="xvmc"
2326 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2327 mpeg4_crystalhd_decoder_select="crystalhd"
2328 mpeg4_vaapi_hwaccel_deps="vaapi"
2329 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2330 mpeg4_vdpau_decoder_deps="vdpau"
2331 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2332 mpeg4_vdpau_hwaccel_deps="vdpau"
2333 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2334 msmpeg4_crystalhd_decoder_select="crystalhd"
2335 vc1_crystalhd_decoder_select="crystalhd"
2336 vc1_dxva2_hwaccel_deps="dxva2"
2337 vc1_dxva2_hwaccel_select="vc1_decoder"
2338 vc1_vaapi_hwaccel_deps="vaapi"
2339 vc1_vaapi_hwaccel_select="vc1_decoder"
2340 vc1_vdpau_decoder_deps="vdpau"
2341 vc1_vdpau_decoder_select="vc1_decoder"
2342 vc1_vdpau_hwaccel_deps="vdpau"
2343 vc1_vdpau_hwaccel_select="vc1_decoder"
2344 wmv3_crystalhd_decoder_select="crystalhd"
2345 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2346 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2347 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2348 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2349
2350 # parsers
2351 h264_parser_select="h264_decoder"
2352 hevc_parser_select="hevc_decoder"
2353 mpegvideo_parser_select="mpegvideo"
2354 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2355 vc1_parser_select="mpegvideo startcode vc1_decoder"
2356
2357 # external libraries
2358 libaacplus_encoder_deps="libaacplus"
2359 libcelt_decoder_deps="libcelt"
2360 libfaac_encoder_deps="libfaac"
2361 libfaac_encoder_select="audio_frame_queue"
2362 libfdk_aac_decoder_deps="libfdk_aac"
2363 libfdk_aac_encoder_deps="libfdk_aac"
2364 libfdk_aac_encoder_select="audio_frame_queue"
2365 libgme_demuxer_deps="libgme"
2366 libgsm_decoder_deps="libgsm"
2367 libgsm_encoder_deps="libgsm"
2368 libgsm_ms_decoder_deps="libgsm"
2369 libgsm_ms_encoder_deps="libgsm"
2370 libilbc_decoder_deps="libilbc"
2371 libilbc_encoder_deps="libilbc"
2372 libmodplug_demuxer_deps="libmodplug"
2373 libmp3lame_encoder_deps="libmp3lame"
2374 libmp3lame_encoder_select="audio_frame_queue"
2375 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2376 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2377 libopencore_amrnb_encoder_select="audio_frame_queue"
2378 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2379 libopenh264_encoder_deps="libopenh264"
2380 libopenjpeg_decoder_deps="libopenjpeg"
2381 libopenjpeg_encoder_deps="libopenjpeg"
2382 libopus_decoder_deps="libopus"
2383 libopus_encoder_deps="libopus"
2384 libopus_encoder_select="audio_frame_queue"
2385 libquvi_demuxer_deps="libquvi"
2386 libschroedinger_decoder_deps="libschroedinger"
2387 libschroedinger_encoder_deps="libschroedinger"
2388 libshine_encoder_deps="libshine"
2389 libshine_encoder_select="audio_frame_queue"
2390 libspeex_decoder_deps="libspeex"
2391 libspeex_encoder_deps="libspeex"
2392 libspeex_encoder_select="audio_frame_queue"
2393 libstagefright_h264_decoder_deps="libstagefright_h264"
2394 libtheora_encoder_deps="libtheora"
2395 libtwolame_encoder_deps="libtwolame"
2396 libvo_aacenc_encoder_deps="libvo_aacenc"
2397 libvo_aacenc_encoder_select="audio_frame_queue"
2398 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2399 libvorbis_decoder_deps="libvorbis"
2400 libvorbis_encoder_deps="libvorbis"
2401 libvorbis_encoder_select="audio_frame_queue"
2402 libvpx_vp8_decoder_deps="libvpx"
2403 libvpx_vp8_encoder_deps="libvpx"
2404 libvpx_vp9_decoder_deps="libvpx"
2405 libvpx_vp9_encoder_deps="libvpx"
2406 libwavpack_encoder_deps="libwavpack"
2407 libwebp_encoder_deps="libwebp"
2408 libx264_encoder_deps="libx264"
2409 libx264rgb_encoder_deps="libx264"
2410 libx264rgb_encoder_select="libx264_encoder"
2411 libx265_encoder_deps="libx265"
2412 libxavs_encoder_deps="libxavs"
2413 libxvid_encoder_deps="libxvid"
2414 libutvideo_decoder_deps="libutvideo"
2415 libutvideo_encoder_deps="libutvideo"
2416 libzvbi_teletext_decoder_deps="libzvbi"
2417 nvenc_encoder_deps="nvenc"
2418
2419 # demuxers / muxers
2420 ac3_demuxer_select="ac3_parser"
2421 asf_demuxer_select="riffdec"
2422 asf_muxer_select="riffenc"
2423 asf_stream_muxer_select="asf_muxer"
2424 avi_demuxer_select="riffdec exif"
2425 avi_muxer_select="riffenc"
2426 avisynth_demuxer_deps="avisynth"
2427 avisynth_demuxer_select="riffdec"
2428 caf_demuxer_select="riffdec"
2429 dash_muxer_select="mp4_muxer"
2430 dirac_demuxer_select="dirac_parser"
2431 dts_demuxer_select="dca_parser"
2432 dtshd_demuxer_select="dca_parser"
2433 dv_demuxer_select="dvprofile"
2434 dv_muxer_select="dvprofile"
2435 dxa_demuxer_select="riffdec"
2436 eac3_demuxer_select="ac3_parser"
2437 f4v_muxer_select="mov_muxer"
2438 flac_demuxer_select="flac_parser"
2439 hds_muxer_select="flv_muxer"
2440 hls_muxer_select="mpegts_muxer"
2441 image2_alias_pix_demuxer_select="image2_demuxer"
2442 image2_brender_pix_demuxer_select="image2_demuxer"
2443 ipod_muxer_select="mov_muxer"
2444 ismv_muxer_select="mov_muxer"
2445 libnut_demuxer_deps="libnut"
2446 libnut_muxer_deps="libnut"
2447 matroska_audio_muxer_select="matroska_muxer"
2448 matroska_demuxer_select="riffdec"
2449 matroska_demuxer_suggest="bzlib lzo zlib"
2450 matroska_muxer_select="riffenc"
2451 mmf_muxer_select="riffenc"
2452 mov_demuxer_select="riffdec"
2453 mov_demuxer_suggest="zlib"
2454 mov_muxer_select="riffenc rtpenc_chain"
2455 mp3_demuxer_select="mpegaudio_parser"
2456 mp4_muxer_select="mov_muxer"
2457 mpegts_muxer_select="adts_muxer latm_muxer"
2458 mpegtsraw_demuxer_select="mpegts_demuxer"
2459 mxf_d10_muxer_select="mxf_muxer"
2460 mxf_opatom_muxer_select="mxf_muxer"
2461 nut_muxer_select="riffenc"
2462 nuv_demuxer_select="riffdec"
2463 oga_muxer_select="ogg_muxer"
2464 ogg_demuxer_select="golomb"
2465 opus_muxer_select="ogg_muxer"
2466 psp_muxer_select="mov_muxer"
2467 rtp_demuxer_select="sdp_demuxer"
2468 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2469 rtsp_demuxer_select="http_protocol rtpdec"
2470 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2471 sap_demuxer_select="sdp_demuxer"
2472 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2473 sdp_demuxer_select="rtpdec"
2474 smoothstreaming_muxer_select="ismv_muxer"
2475 spdif_muxer_select="aac_parser"
2476 spx_muxer_select="ogg_muxer"
2477 tak_demuxer_select="tak_parser"
2478 tg2_muxer_select="mov_muxer"
2479 tgp_muxer_select="mov_muxer"
2480 vobsub_demuxer_select="mpegps_demuxer"
2481 w64_demuxer_select="wav_demuxer"
2482 w64_muxer_select="wav_muxer"
2483 wav_demuxer_select="riffdec"
2484 wav_muxer_select="riffenc"
2485 webm_muxer_select="riffenc"
2486 wtv_demuxer_select="riffdec"
2487 wtv_muxer_select="riffenc"
2488 xmv_demuxer_select="riffdec"
2489 xwma_demuxer_select="riffdec"
2490
2491 # indevs / outdevs
2492 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2493 alsa_outdev_deps="alsa_asoundlib_h"
2494 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2495 avfoundation_indev_select="avfoundation"
2496 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2497 caca_outdev_deps="libcaca"
2498 decklink_outdev_deps="decklink pthreads"
2499 decklink_outdev_extralibs="-lstdc++"
2500 decklink_indev_deps="decklink pthreads"
2501 decklink_indev_extralibs="-lstdc++"
2502 dshow_indev_deps="IBaseFilter"
2503 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2504 dv1394_indev_deps="dv1394"
2505 dv1394_indev_select="dv_demuxer"
2506 fbdev_indev_deps="linux_fb_h"
2507 fbdev_outdev_deps="linux_fb_h"
2508 gdigrab_indev_deps="CreateDIBSection"
2509 gdigrab_indev_extralibs="-lgdi32"
2510 gdigrab_indev_select="bmp_decoder"
2511 iec61883_indev_deps="libiec61883"
2512 jack_indev_deps="jack_jack_h sem_timedwait"
2513 lavfi_indev_deps="avfilter"
2514 libcdio_indev_deps="libcdio"
2515 libdc1394_indev_deps="libdc1394"
2516 libv4l2_indev_deps="libv4l2"
2517 openal_indev_deps="openal"
2518 opengl_outdev_deps="opengl"
2519 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2520 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2521 pulse_indev_deps="libpulse"
2522 pulse_outdev_deps="libpulse"
2523 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2524 qtkit_indev_select="qtkit"
2525 sdl_outdev_deps="sdl"
2526 sndio_indev_deps="sndio_h"
2527 sndio_outdev_deps="sndio_h"
2528 v4l_indev_deps="linux_videodev_h"
2529 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2530 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2531 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2532 vfwcap_indev_extralibs="-lavicap32"
2533 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2534 xv_outdev_extralibs="-lXv -lX11 -lXext"
2535 x11grab_indev_deps="x11grab"
2536 x11grab_xcb_indev_deps="libxcb"
2537
2538 # protocols
2539 bluray_protocol_deps="libbluray"
2540 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2541 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2542 ffrtmpcrypt_protocol_select="tcp_protocol"
2543 ffrtmphttp_protocol_deps="!librtmp_protocol"
2544 ffrtmphttp_protocol_select="http_protocol"
2545 ftp_protocol_select="tcp_protocol"
2546 gopher_protocol_select="network"
2547 http_protocol_select="tcp_protocol"
2548 httpproxy_protocol_select="tcp_protocol"
2549 https_protocol_select="tls_protocol"
2550 icecast_protocol_select="http_protocol"
2551 librtmp_protocol_deps="librtmp"
2552 librtmpe_protocol_deps="librtmp"
2553 librtmps_protocol_deps="librtmp"
2554 librtmpt_protocol_deps="librtmp"
2555 librtmpte_protocol_deps="librtmp"
2556 libsmbclient_protocol_deps="libsmbclient gplv3"
2557 libssh_protocol_deps="libssh"
2558 mmsh_protocol_select="http_protocol"
2559 mmst_protocol_select="network"
2560 rtmp_protocol_deps="!librtmp_protocol"
2561 rtmp_protocol_select="tcp_protocol"
2562 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2563 rtmps_protocol_deps="!librtmp_protocol"
2564 rtmps_protocol_select="tls_protocol"
2565 rtmpt_protocol_select="ffrtmphttp_protocol"
2566 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2567 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2568 rtp_protocol_select="udp_protocol"
2569 sctp_protocol_deps="struct_sctp_event_subscribe"
2570 sctp_protocol_select="network"
2571 srtp_protocol_select="rtp_protocol"
2572 tcp_protocol_select="network"
2573 tls_protocol_deps_any="openssl gnutls"
2574 tls_protocol_select="tcp_protocol"
2575 udp_protocol_select="network"
2576 udplite_protocol_select="network"
2577 unix_protocol_deps="sys_un_h"
2578 unix_protocol_select="network"
2579
2580 # filters
2581 amovie_filter_deps="avcodec avformat"
2582 aresample_filter_deps="swresample"
2583 ass_filter_deps="libass"
2584 asyncts_filter_deps="avresample"
2585 atempo_filter_deps="avcodec"
2586 atempo_filter_select="rdft"
2587 azmq_filter_deps="libzmq"
2588 blackframe_filter_deps="gpl"
2589 boxblur_filter_deps="gpl"
2590 bs2b_filter_deps="libbs2b"
2591 colormatrix_filter_deps="gpl"
2592 cropdetect_filter_deps="gpl"
2593 delogo_filter_deps="gpl"
2594 deshake_filter_select="pixelutils"
2595 drawtext_filter_deps="libfreetype"
2596 ebur128_filter_deps="gpl"
2597 eq_filter_deps="gpl"
2598 flite_filter_deps="libflite"
2599 frei0r_filter_deps="frei0r dlopen"
2600 frei0r_src_filter_deps="frei0r dlopen"
2601 fspp_filter_deps="gpl"
2602 geq_filter_deps="gpl"
2603 histeq_filter_deps="gpl"
2604 hqdn3d_filter_deps="gpl"
2605 interlace_filter_deps="gpl"
2606 kerndeint_filter_deps="gpl"
2607 ladspa_filter_deps="ladspa dlopen"
2608 mcdeint_filter_deps="avcodec gpl"
2609 movie_filter_deps="avcodec avformat"
2610 mpdecimate_filter_deps="gpl"
2611 mpdecimate_filter_select="pixelutils"
2612 mptestsrc_filter_deps="gpl"
2613 negate_filter_deps="lut_filter"
2614 perspective_filter_deps="gpl"
2615 pp7_filter_deps="gpl"
2616 ocv_filter_deps="libopencv"
2617 owdenoise_filter_deps="gpl"
2618 pan_filter_deps="swresample"
2619 phase_filter_deps="gpl"
2620 pp_filter_deps="gpl postproc"
2621 pullup_filter_deps="gpl"
2622 removelogo_filter_deps="avcodec avformat swscale"
2623 repeatfields_filter_deps="gpl"
2624 resample_filter_deps="avresample"
2625 sab_filter_deps="gpl swscale"
2626 scale_filter_deps="swscale"
2627 select_filter_select="pixelutils"
2628 smartblur_filter_deps="gpl swscale"
2629 showspectrum_filter_deps="avcodec"
2630 showspectrum_filter_select="rdft"
2631 spp_filter_deps="gpl avcodec"
2632 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2633 stereo3d_filter_deps="gpl"
2634 subtitles_filter_deps="avformat avcodec libass"
2635 super2xsai_filter_deps="gpl"
2636 tinterlace_filter_deps="gpl"
2637 vidstabdetect_filter_deps="libvidstab"
2638 vidstabtransform_filter_deps="libvidstab"
2639 pixfmts_super2xsai_test_deps="super2xsai_filter"
2640 tinterlace_merge_test_deps="tinterlace_filter"
2641 tinterlace_pad_test_deps="tinterlace_filter"
2642 uspp_filter_deps="gpl avcodec"
2643 zmq_filter_deps="libzmq"
2644 zoompan_filter_deps="swscale"
2645
2646 # examples
2647 avio_reading="avformat avcodec avutil"
2648 avcodec_example_deps="avcodec avutil"
2649 decoding_encoding_example_deps="avcodec avformat avutil"
2650 demuxing_decoding_example_deps="avcodec avformat avutil"
2651 extract_mvs_example_deps="avcodec avformat avutil"
2652 filter_audio_example_deps="avfilter avutil"
2653 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2654 filtering_video_example_deps="avfilter avcodec avformat avutil"
2655 metadata_example_deps="avformat avutil"
2656 muxing_example_deps="avcodec avformat avutil swscale"
2657 remuxing_example_deps="avcodec avformat avutil"
2658 resampling_audio_example_deps="avutil swresample"
2659 scaling_video_example_deps="avutil swscale"
2660 transcode_aac_example_deps="avcodec avformat swresample"
2661 transcoding_example_deps="avfilter avcodec avformat avutil"
2662
2663 # libraries, in linking order
2664 avcodec_deps="avutil"
2665 avdevice_deps="avformat avcodec avutil"
2666 avfilter_deps="avutil"
2667 avformat_deps="avcodec avutil"
2668 avresample_deps="avutil"
2669 postproc_deps="avutil gpl"
2670 swresample_deps="avutil"
2671 swscale_deps="avutil"
2672
2673 # programs
2674 ffmpeg_deps="avcodec avfilter avformat swresample"
2675 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2676                null_filter
2677                setpts_filter trim_filter"
2678 ffplay_deps="avcodec avformat swscale swresample sdl"
2679 ffplay_libs='$sdl_libs'
2680 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2681 ffprobe_deps="avcodec avformat"
2682 ffserver_deps="avformat fork sarestart"
2683 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2684
2685 # documentation
2686 podpages_deps="perl"
2687 manpages_deps="perl pod2man"
2688 htmlpages_deps="perl"
2689 htmlpages_deps_any="makeinfo_html texi2html"
2690 txtpages_deps="perl makeinfo"
2691 doc_deps_any="manpages htmlpages podpages txtpages"
2692
2693 # default parameters
2694
2695 logfile="config.log"
2696
2697 # installation paths
2698 prefix_default="/usr/local"
2699 bindir_default='${prefix}/bin'
2700 datadir_default='${prefix}/share/ffmpeg'
2701 docdir_default='${prefix}/share/doc/ffmpeg'
2702 incdir_default='${prefix}/include'
2703 libdir_default='${prefix}/lib'
2704 mandir_default='${prefix}/share/man'
2705
2706 # toolchain
2707 ar_default="ar"
2708 cc_default="gcc"
2709 cxx_default="g++"
2710 host_cc_default="gcc"
2711 cp_f="cp -f"
2712 doxygen_default="doxygen"
2713 install="install"
2714 ln_s="ln -s -f"
2715 nm_default="nm -g"
2716 objformat="elf"
2717 pkg_config_default=pkg-config
2718 if ranlib 2>&1 | grep -q "\-D "; then
2719     ranlib_default="ranlib -D"
2720 else
2721     ranlib_default="ranlib"
2722 fi
2723 strip_default="strip"
2724 yasmexe_default="yasm"
2725 windres_default="windres"
2726
2727 # OS
2728 target_os_default=$(tolower $(uname -s))
2729 host_os=$target_os_default
2730
2731 # machine
2732 if test "$target_os_default" = aix; then
2733     arch_default=$(uname -p)
2734     strip_default="strip -X32_64"
2735 else
2736     arch_default=$(uname -m)
2737 fi
2738 cpu="generic"
2739 intrinsics="none"
2740
2741 # configurable options
2742 enable $PROGRAM_LIST
2743 enable $DOCUMENT_LIST
2744 enable $EXAMPLE_LIST
2745 enable $(filter_out avresample $LIBRARY_LIST)
2746 enable stripping
2747
2748 enable asm
2749 enable debug
2750 enable doc
2751 enable faan faandct faanidct
2752 enable optimizations
2753 enable runtime_cpudetect
2754 enable safe_bitstream_reader
2755 enable static
2756 enable swscale_alpha
2757
2758 sws_max_filter_size_default=256
2759 set_default sws_max_filter_size
2760
2761 # Enable hwaccels by default.
2762 enable dxva2 vaapi vda vdpau xvmc
2763 enable xlib
2764
2765 # build settings
2766 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2767 LIBPREF="lib"
2768 LIBSUF=".a"
2769 FULLNAME='$(NAME)$(BUILDSUF)'
2770 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2771 SLIBPREF="lib"
2772 SLIBSUF=".so"
2773 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2774 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2775 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2776 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2777 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2778 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2779
2780 asflags_filter=echo
2781 cflags_filter=echo
2782 ldflags_filter=echo
2783
2784 AS_C='-c'
2785 AS_O='-o $@'
2786 CC_C='-c'
2787 CC_E='-E -o $@'
2788 CC_O='-o $@'
2789 CXX_C='-c'
2790 CXX_O='-o $@'
2791 LD_O='-o $@'
2792 LD_LIB='-l%'
2793 LD_PATH='-L'
2794 HOSTCC_C='-c'
2795 HOSTCC_E='-E -o $@'
2796 HOSTCC_O='-o $@'
2797 HOSTLD_O='-o $@'
2798
2799 host_libs='-lm'
2800 host_cflags_filter=echo
2801 host_ldflags_filter=echo
2802
2803 target_path='$(CURDIR)'
2804
2805 # since the object filename is not given with the -MM flag, the compiler
2806 # is only able to print the basename, and we must add the path ourselves
2807 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2808 DEPFLAGS='-MM'
2809
2810 # find source path
2811 if test -f configure; then
2812     source_path=.
2813 else
2814     source_path=$(cd $(dirname "$0"); pwd)
2815     echo "$source_path" | grep -q '[[:blank:]]' &&
2816         die "Out of tree builds are impossible with whitespace in source path."
2817     test -e "$source_path/config.h" &&
2818         die "Out of tree builds are impossible with config.h in source dir."
2819 fi
2820
2821 for v in "$@"; do
2822     r=${v#*=}
2823     l=${v%"$r"}
2824     r=$(sh_quote "$r")
2825     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2826 done
2827
2828 find_things(){
2829     thing=$1
2830     pattern=$2
2831     file=$source_path/$3
2832     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2833 }
2834
2835 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2836 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2837 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2838 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2839 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2840 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2841 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2842 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2843 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2844 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2845 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2846
2847 ALL_COMPONENTS="
2848     $BSF_LIST
2849     $DECODER_LIST
2850     $DEMUXER_LIST
2851     $ENCODER_LIST
2852     $FILTER_LIST
2853     $HWACCEL_LIST
2854     $INDEV_LIST
2855     $MUXER_LIST
2856     $OUTDEV_LIST
2857     $PARSER_LIST
2858     $PROTOCOL_LIST
2859 "
2860
2861 for n in $COMPONENT_LIST; do
2862     v=$(toupper ${n%s})_LIST
2863     eval enable \$$v
2864     eval ${n}_if_any="\$$v"
2865 done
2866
2867 enable $ARCH_EXT_LIST
2868
2869 die_unknown(){
2870     echo "Unknown option \"$1\"."
2871     echo "See $0 --help for available options."
2872     exit 1
2873 }
2874
2875 print_3_columns() {
2876     cat | tr ' ' '\n' | sort | pr -r -3 -t
2877 }
2878
2879 show_list() {
2880     suffix=_$1
2881     shift
2882     echo $* | sed s/$suffix//g | print_3_columns
2883     exit 0
2884 }
2885
2886 rand_list(){
2887     IFS=', '
2888     set -- $*
2889     unset IFS
2890     for thing; do
2891         comp=${thing%:*}
2892         prob=${thing#$comp}
2893         prob=${prob#:}
2894         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2895         echo "prob ${prob:-0.5}"
2896         printf '%s\n' $comp
2897     done
2898 }
2899
2900 do_random(){
2901     action=$1
2902     shift
2903     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2904     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2905 }
2906
2907 for opt do
2908     optval="${opt#*=}"
2909     case "$opt" in
2910         --extra-ldflags=*)
2911             add_ldflags $optval
2912         ;;
2913         --extra-ldexeflags=*)
2914             add_ldexeflags $optval
2915         ;;
2916         --extra-libs=*)
2917             add_extralibs $optval
2918         ;;
2919         --disable-devices)
2920             disable $INDEV_LIST $OUTDEV_LIST
2921         ;;
2922         --enable-debug=*)
2923             debuglevel="$optval"
2924         ;;
2925         --disable-programs)
2926             disable $PROGRAM_LIST
2927         ;;
2928         --disable-everything)
2929             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2930         ;;
2931         --disable-all)
2932             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2933             disable $LIBRARY_LIST $PROGRAM_LIST doc
2934         ;;
2935         --enable-random|--disable-random)
2936             action=${opt%%-random}
2937             do_random ${action#--} $COMPONENT_LIST
2938         ;;
2939         --enable-random=*|--disable-random=*)
2940             action=${opt%%-random=*}
2941             do_random ${action#--} $optval
2942         ;;
2943         --enable-*=*|--disable-*=*)
2944             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2945             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2946             eval list=\$$(toupper $thing)_LIST
2947             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2948             list=$(filter "$name" $list)
2949             [ "$list" = "" ] && warn "Option $opt did not match anything"
2950             $action $list
2951         ;;
2952         --enable-?*|--disable-?*)
2953             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2954             if is_in $option $COMPONENT_LIST; then
2955                 test $action = disable && action=unset
2956                 eval $action \$$(toupper ${option%s})_LIST
2957             elif is_in $option $CMDLINE_SELECT; then
2958                 $action $option
2959             else
2960                 die_unknown $opt
2961             fi
2962         ;;
2963         --list-*)
2964             NAME="${opt#--list-}"
2965             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2966             NAME=${NAME%s}
2967             eval show_list $NAME \$$(toupper $NAME)_LIST
2968         ;;
2969         --help|-h) show_help
2970         ;;
2971         --fatal-warnings) enable fatal_warnings
2972         ;;
2973         *)
2974             optname="${opt%%=*}"
2975             optname="${optname#--}"
2976             optname=$(echo "$optname" | sed 's/-/_/g')
2977             if is_in $optname $CMDLINE_SET; then
2978                 eval $optname='$optval'
2979             elif is_in $optname $CMDLINE_APPEND; then
2980                 append $optname "$optval"
2981             else
2982                 die_unknown $opt
2983             fi
2984         ;;
2985     esac
2986 done
2987
2988 disabled logging && logfile=/dev/null
2989
2990 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2991 set >> $logfile
2992
2993 test -n "$cross_prefix" && enable cross_compile
2994
2995 if enabled cross_compile; then
2996     test -n "$arch" && test -n "$target_os" ||
2997         die "Must specify target arch and OS when cross-compiling"
2998 fi
2999
3000 test -n "$valgrind" && toolchain="valgrind-memcheck"
3001
3002 case "$toolchain" in
3003     clang-asan)
3004         cc_default="clang"
3005         add_cflags  -fsanitize=address
3006         add_ldflags -fsanitize=address
3007     ;;
3008     clang-tsan)
3009         cc_default="clang"
3010         add_cflags  -fsanitize=thread -pie
3011         add_ldflags -fsanitize=thread -pie
3012     ;;
3013     clang-usan)
3014         cc_default="clang"
3015         add_cflags  -fsanitize=undefined
3016         add_ldflags -fsanitize=undefined
3017     ;;
3018     gcc-asan)
3019         cc_default="gcc"
3020         add_cflags  -fsanitize=address
3021         add_ldflags -fsanitize=address
3022     ;;
3023     gcc-tsan)
3024         cc_default="gcc"
3025         add_cflags  -fsanitize=thread -pie -fPIC
3026         add_ldflags -fsanitize=thread -pie -fPIC
3027     ;;
3028     gcc-usan)
3029         cc_default="gcc"
3030         add_cflags  -fsanitize=undefined
3031         add_ldflags -fsanitize=undefined
3032     ;;
3033     valgrind-massif)
3034         target_exec_default=${valgrind:-"valgrind"}
3035         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3036     ;;
3037     valgrind-memcheck)
3038         target_exec_default=${valgrind:-"valgrind"}
3039         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3040     ;;
3041     msvc)
3042         # Check whether the current MSVC version needs the C99 converter.
3043         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3044         # support enough of C99 to build ffmpeg. Default to the new
3045         # behaviour if the regexp was unable to match anything, since this
3046         # successfully parses the version number of existing supported
3047         # versions that require the converter (MSVC 2010 and 2012).
3048         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3049         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3050             cc_default="cl"
3051         else
3052             cc_default="c99wrap cl"
3053         fi
3054         ld_default="link"
3055         nm_default="dumpbin -symbols"
3056         ar_default="lib"
3057         target_os_default="win32"
3058         # Use a relative path for TMPDIR. This makes sure all the
3059         # ffconf temp files are written with a relative path, avoiding
3060         # issues with msys/win32 path conversion for MSVC parameters
3061         # such as -Fo<file> or -out:<file>.
3062         TMPDIR=.
3063     ;;
3064     icl)
3065         cc_default="icl"
3066         ld_default="xilink"
3067         nm_default="dumpbin -symbols"
3068         ar_default="xilib"
3069         target_os_default="win32"
3070         TMPDIR=.
3071     ;;
3072     gcov)
3073         add_cflags  -fprofile-arcs -ftest-coverage
3074         add_ldflags -fprofile-arcs -ftest-coverage
3075     ;;
3076     hardened)
3077         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3078         add_cflags   -fno-strict-overflow -fstack-protector-all
3079         add_ldflags  -Wl,-z,relro -Wl,-z,now
3080     ;;
3081     ?*)
3082         die "Unknown toolchain $toolchain"
3083     ;;
3084 esac
3085
3086 ar_default="${cross_prefix}${ar_default}"
3087 cc_default="${cross_prefix}${cc_default}"
3088 cxx_default="${cross_prefix}${cxx_default}"
3089 nm_default="${cross_prefix}${nm_default}"
3090 pkg_config_default="${cross_prefix}${pkg_config_default}"
3091 ranlib_default="${cross_prefix}${ranlib_default}"
3092 strip_default="${cross_prefix}${strip_default}"
3093 windres_default="${cross_prefix}${windres_default}"
3094
3095 sysinclude_default="${sysroot}/usr/include"
3096
3097 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3098     target_exec target_os yasmexe
3099 enabled cross_compile || host_cc_default=$cc
3100 set_default host_cc
3101
3102 pkg_config_fail_message=""
3103 if ! $pkg_config --version >/dev/null 2>&1; then
3104     warn "$pkg_config not found, library detection may fail."
3105     pkg_config=false
3106 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3107     pkg_config_fail_message="
3108 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3109 fi
3110
3111 if test $doxygen != $doxygen_default && \
3112   ! $doxygen --version >/dev/null 2>&1; then
3113     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3114 fi
3115
3116 exesuf() {
3117     case $1 in
3118         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3119     esac
3120 }
3121
3122 EXESUF=$(exesuf $target_os)
3123 HOSTEXESUF=$(exesuf $host_os)
3124
3125 # set temporary file name
3126 : ${TMPDIR:=$TEMPDIR}
3127 : ${TMPDIR:=$TMP}
3128 : ${TMPDIR:=/tmp}
3129
3130 if [ -n "$tempprefix" ] ; then
3131     mktemp(){
3132         echo $tempprefix.${HOSTNAME}.${UID}
3133     }
3134 elif ! check_cmd mktemp -u XXXXXX; then
3135     # simple replacement for missing mktemp
3136     # NOT SAFE FOR GENERAL USE
3137     mktemp(){
3138         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3139     }
3140 fi
3141
3142 tmpfile(){
3143     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3144         (set -C; exec > $tmp) 2>/dev/null ||
3145         die "Unable to create temporary file in $TMPDIR."
3146     append TMPFILES $tmp
3147     eval $1=$tmp
3148 }
3149
3150 trap 'rm -f -- $TMPFILES' EXIT
3151
3152 tmpfile TMPASM .asm
3153 tmpfile TMPC   .c
3154 tmpfile TMPCPP .cpp
3155 tmpfile TMPE   $EXESUF
3156 tmpfile TMPH   .h
3157 tmpfile TMPM   .m
3158 tmpfile TMPO   .o
3159 tmpfile TMPS   .S
3160 tmpfile TMPSH  .sh
3161 tmpfile TMPV   .ver
3162
3163 unset -f mktemp
3164
3165 chmod +x $TMPE
3166
3167 # make sure we can execute files in $TMPDIR
3168 cat > $TMPSH 2>> $logfile <<EOF
3169 #! /bin/sh
3170 EOF
3171 chmod +x $TMPSH >> $logfile 2>&1
3172 if ! $TMPSH >> $logfile 2>&1; then
3173     cat <<EOF
3174 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3175 variable to another directory and make sure that it is not mounted noexec.
3176 EOF
3177     die "Sanity test failed."
3178 fi
3179
3180 armasm_flags(){
3181     for flag; do
3182         case $flag in
3183             # Filter out MSVC cl.exe options from cflags that shouldn't
3184             # be passed to gas-preprocessor
3185             -M[TD]*)                                            ;;
3186             *)                  echo $flag                      ;;
3187         esac
3188    done
3189 }
3190
3191 ccc_flags(){
3192     for flag; do
3193         case $flag in
3194             -std=c99)           echo -c99                       ;;
3195             -mcpu=*)            echo -arch ${flag#*=}           ;;
3196             -mieee)             echo -ieee                      ;;
3197             -O*|-fast)          echo $flag                      ;;
3198             -fno-math-errno)    echo -assume nomath_errno       ;;
3199             -g)                 echo -g3                        ;;
3200             -Wall)              echo -msg_enable level2         ;;
3201             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3202             -Wl,*)              echo $flag                      ;;
3203             -f*|-W*)                                            ;;
3204             *)                  echo $flag                      ;;
3205         esac
3206    done
3207 }
3208
3209 cparser_flags(){
3210     for flag; do
3211         case $flag in
3212             -Wno-switch)             echo -Wno-switch-enum ;;
3213             -Wno-format-zero-length) ;;
3214             -Wdisabled-optimization) ;;
3215             -Wno-pointer-sign)       echo -Wno-other ;;
3216             *)                       echo $flag ;;
3217         esac
3218     done
3219 }
3220
3221 msvc_common_flags(){
3222     for flag; do
3223         case $flag in
3224             # In addition to specifying certain flags under the compiler
3225             # specific filters, they must be specified here as well or else the
3226             # generic catch all at the bottom will print the original flag.
3227             -Wall)                ;;
3228             -std=c99)             ;;
3229             # Common flags
3230             -fomit-frame-pointer) ;;
3231             -g)                   echo -Z7 ;;
3232             -fno-math-errno)      ;;
3233             -fno-common)          ;;
3234             -fno-signed-zeros)    ;;
3235             -fPIC)                ;;
3236             -mthumb)              ;;
3237             -march=*)             ;;
3238             -lz)                  echo zlib.lib ;;
3239             -lavifil32)           echo vfw32.lib ;;
3240             -lavicap32)           echo vfw32.lib user32.lib ;;
3241             -l*)                  echo ${flag#-l}.lib ;;
3242             -L*)                  echo -libpath:${flag#-L} ;;
3243             *)                    echo $flag ;;
3244         esac
3245     done
3246 }
3247
3248 msvc_flags(){
3249     msvc_common_flags "$@"
3250     for flag; do
3251         case $flag in
3252             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3253                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3254                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3255                                        -wd4554 \
3256                                        -wd4273 -wd4701 ;;
3257         esac
3258     done
3259 }
3260
3261 icl_flags(){
3262     msvc_common_flags "$@"
3263     for flag; do
3264         case $flag in
3265             # Despite what Intel's documentation says -Wall, which is supported
3266             # on Windows, does enable remarks so disable them here.
3267             -Wall)                echo $flag -Qdiag-disable:remark ;;
3268             -std=c99)             echo -Qstd=c99 ;;
3269             -flto)                echo -ipo ;;
3270         esac
3271     done
3272 }
3273
3274 icc_flags(){
3275     for flag; do
3276         case $flag in
3277             -flto)                echo -ipo ;;
3278             *)                    echo $flag ;;
3279         esac
3280     done
3281 }
3282
3283 pgi_flags(){
3284     for flag; do
3285         case $flag in
3286             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3287             -fomit-frame-pointer) echo -Mnoframe ;;
3288             -g)                   echo -gopt ;;
3289             *)                    echo $flag ;;
3290         esac
3291     done
3292 }
3293
3294 suncc_flags(){
3295     for flag; do
3296         case $flag in
3297             -march=*|-mcpu=*)
3298                 case "${flag#*=}" in
3299                     native)                   echo -xtarget=native       ;;
3300                     v9|niagara)               echo -xarch=sparc          ;;
3301                     ultrasparc)               echo -xarch=sparcvis       ;;
3302                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3303                     i586|pentium)             echo -xchip=pentium        ;;
3304                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3305                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3306                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3307                     pentium4*)          echo -xtarget=pentium4           ;;
3308                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3309                     *-sse3)             echo -xarch=sse3                 ;;
3310                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3311                     bonnell)                   echo -xarch=ssse3         ;;
3312                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3313                     westmere)                  echo -xtarget=westmere    ;;
3314                     silvermont)                echo -xarch=sse4_2        ;;
3315                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3316                     core-avx*|ivybridge|haswell|broadwell)
3317                                                echo -xarch=avx           ;;
3318                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3319                     btver1)                    echo -xarch=amdsse4a      ;;
3320                     btver2|bdver*)             echo -xarch=avx           ;;
3321                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3322                     k8|opteron|athlon64|athlon-fx)
3323                                                echo -xarch=sse2a         ;;
3324                     athlon*)                   echo -xarch=pentium_proa  ;;
3325                 esac
3326                 ;;
3327             -std=c99)             echo -xc99              ;;
3328             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3329             -fPIC)                echo -KPIC -xcode=pic32 ;;
3330             -W*,*)                echo $flag              ;;
3331             -f*-*|-W*|-mimpure-text)                      ;;
3332             -shared)              echo -G                 ;;
3333             *)                    echo $flag              ;;
3334         esac
3335     done
3336 }
3337
3338 tms470_flags(){
3339     for flag; do
3340         case $flag in
3341             -march=*|-mcpu=*)
3342                 case "${flag#*=}" in
3343                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3344                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3345                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3346                     armv6*|arm11*)          echo -mv=6   ;;
3347                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3348                                             echo -mv=5e  ;;
3349                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3350                 esac
3351                 ;;
3352             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3353             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3354             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3355             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3356             -msoft-float)   echo --float_support=vfplib       ;;
3357             -O[0-3]|-mf=*)  echo $flag                        ;;
3358             -g)             echo -g -mn                       ;;
3359             -pds=*)         echo $flag                        ;;
3360             -D*|-I*)        echo $flag                        ;;
3361             --gcc|--abi=*)  echo $flag                        ;;
3362             -me)            echo $flag                        ;;
3363         esac
3364     done
3365 }
3366
3367 probe_cc(){
3368     pfx=$1
3369     _cc=$2
3370
3371     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3372     unset _ld_o _ldflags _ld_lib _ld_path
3373     unset _depflags _DEPCMD _DEPFLAGS
3374     _flags_filter=echo
3375
3376     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3377         true # no-op to avoid reading stdin in following checks
3378     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3379         _type=llvm_gcc
3380         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3381         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3382         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3383         _cflags_speed='-O3'
3384         _cflags_size='-Os'
3385     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3386         _type=gcc
3387         gcc_version=$($_cc --version | head -n1)
3388         gcc_basever=$($_cc -dumpversion)
3389         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3390         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3391         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3392         if ! $_cc -dumpversion | grep -q '^2\.'; then
3393             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3394         fi
3395         _cflags_speed='-O3'
3396         _cflags_size='-Os'
3397     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3398         _type=icc
3399         _ident=$($_cc --version | head -n1)
3400         _depflags='-MMD'
3401         _cflags_speed='-O3'
3402         _cflags_size='-Os'
3403         _cflags_noopt='-O1'
3404         _flags_filter=icc_flags
3405     elif $_cc -v 2>&1 | grep -q xlc; then
3406         _type=xlc
3407         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3408         _cflags_speed='-O5'
3409         _cflags_size='-O5 -qcompact'
3410     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3411         _type=ccc
3412         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3413         _DEPFLAGS='-M'
3414         _cflags_speed='-fast'
3415         _cflags_size='-O1'
3416         _flags_filter=ccc_flags
3417     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3418         test -d "$sysroot" || die "No valid sysroot specified."
3419         _type=armcc
3420         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3421         armcc_conf="$PWD/armcc.conf"
3422         $_cc --arm_linux_configure                 \
3423              --arm_linux_config_file="$armcc_conf" \
3424              --configure_sysroot="$sysroot"        \
3425              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3426              die "Error creating armcc configuration file."
3427         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3428         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3429         as_default="${cross_prefix}gcc"
3430         _depflags='-MMD'
3431         _cflags_speed='-O3'
3432         _cflags_size='-Os'
3433     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3434         _type=tms470
3435         _ident=$($_cc -version | head -n1 | tr -s ' ')
3436         _flags='--gcc --abi=eabi -me'
3437         _cc_e='-ppl -fe=$@'
3438         _cc_o='-fe=$@'
3439         _depflags='-ppa -ppd=$(@:.o=.d)'
3440         _cflags_speed='-O3 -mf=5'
3441         _cflags_size='-O3 -mf=2'
3442         _flags_filter=tms470_flags
3443     elif $_cc -v 2>&1 | grep -q clang; then
3444         _type=clang
3445         _ident=$($_cc --version | head -n1)
3446         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3447         _cflags_speed='-O3'
3448         _cflags_size='-Os'
3449     elif $_cc -V 2>&1 | grep -q Sun; then
3450         _type=suncc
3451         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3452         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3453         _DEPFLAGS='-xM1 -xc99'
3454         _ldflags='-std=c99'
3455         _cflags_speed='-O5'
3456         _cflags_size='-O5 -xspace'
3457         _flags_filter=suncc_flags
3458     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3459         _type=pathscale
3460         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3461         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3462         _cflags_speed='-O2'
3463         _cflags_size='-Os'
3464         _flags_filter='filter_out -Wdisabled-optimization'
3465     elif $_cc -v 2>&1 | grep -q Open64; then
3466         _type=open64
3467         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3468         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3469         _cflags_speed='-O2'
3470         _cflags_size='-Os'
3471         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3472     elif $_cc -V 2>&1 | grep -q Portland; then
3473         _type=pgi
3474         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3475         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3476         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3477         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3478         _cflags_noopt="-O"
3479         _flags_filter=pgi_flags
3480     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3481         _type=armasm
3482         _ident=$($_cc | head -n1)
3483         # 4509: "This form of conditional instruction is deprecated"
3484         _flags="-nologo -ignore 4509"
3485         _flags_filter=armasm_flags
3486     elif $_cc 2>&1 | grep -q Intel; then
3487         _type=icl
3488         _ident=$($cc 2>&1 | head -n1)
3489         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3490         # Not only is O3 broken on 13.x+ but it is slower on all previous
3491         # versions (tested) as well.
3492         _cflags_speed="-O2"
3493         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3494         if $_cc 2>&1 | grep -q Linker; then
3495             _ld_o='-out:$@'
3496         else
3497             _ld_o='-Fe$@'
3498         fi
3499         _cc_o='-Fo$@'
3500         _cc_e='-P'
3501         _flags_filter=icl_flags
3502         _ld_lib='lib%.a'
3503         _ld_path='-libpath:'
3504         # -Qdiag-error to make icl error when seeing certain unknown arguments
3505         _flags='-nologo -Qdiag-error:4044,10157'
3506         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3507         # with MSVC which enables it by default.
3508         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3509         if [ $pfx = hostcc ]; then
3510             append _cflags -Dsnprintf=_snprintf
3511         fi
3512         disable stripping
3513     elif $_cc 2>&1 | grep -q Microsoft; then
3514         _type=msvc
3515         _ident=$($cc 2>&1 | head -n1)
3516         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3517         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3518         _cflags_speed="-O2"
3519         _cflags_size="-O1"
3520         if $_cc 2>&1 | grep -q Linker; then
3521             _ld_o='-out:$@'
3522         else
3523             _ld_o='-Fe$@'
3524         fi
3525         _cc_o='-Fo$@'
3526         _cc_e='-P -Fi$@'
3527         _flags_filter=msvc_flags
3528         _ld_lib='lib%.a'
3529         _ld_path='-libpath:'
3530         _flags='-nologo'
3531         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3532         if [ $pfx = hostcc ]; then
3533             append _cflags -Dsnprintf=_snprintf
3534         fi
3535         disable stripping
3536     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3537         _type=cparser
3538         _ident=$($_cc --version | head -n1)
3539         _depflags='-MMD'
3540         _cflags_speed='-O4'
3541         _cflags_size='-O2'
3542         _flags_filter=cparser_flags
3543     fi
3544
3545     eval ${pfx}_type=\$_type
3546     eval ${pfx}_ident=\$_ident
3547 }
3548
3549 set_ccvars(){
3550     eval ${1}_C=\${_cc_c-\${${1}_C}}
3551     eval ${1}_E=\${_cc_e-\${${1}_E}}
3552     eval ${1}_O=\${_cc_o-\${${1}_O}}
3553
3554     if [ -n "$_depflags" ]; then
3555         eval ${1}_DEPFLAGS=\$_depflags
3556     else
3557         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3558         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3559         eval DEP${1}FLAGS=\$_flags
3560     fi
3561 }
3562
3563 probe_cc cc "$cc"
3564 cflags_filter=$_flags_filter
3565 cflags_speed=$_cflags_speed
3566 cflags_size=$_cflags_size
3567 cflags_noopt=$_cflags_noopt
3568 add_cflags $_flags $_cflags
3569 cc_ldflags=$_ldflags
3570 set_ccvars CC
3571
3572 probe_cc hostcc "$host_cc"
3573 host_cflags_filter=$_flags_filter
3574 add_host_cflags  $_flags $_cflags
3575 set_ccvars HOSTCC
3576
3577 test -n "$cc_type" && enable $cc_type ||
3578     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3579
3580 : ${as_default:=$cc}
3581 : ${dep_cc_default:=$cc}
3582 : ${ld_default:=$cc}
3583 : ${host_ld_default:=$host_cc}
3584 set_default ar as dep_cc ld host_ld windres
3585
3586 probe_cc as "$as"
3587 asflags_filter=$_flags_filter
3588 add_asflags $_flags $_cflags
3589 set_ccvars AS
3590
3591 probe_cc ld "$ld"
3592 ldflags_filter=$_flags_filter
3593 add_ldflags $_flags $_ldflags
3594 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3595 LD_O=${_ld_o-$LD_O}
3596 LD_LIB=${_ld_lib-$LD_LIB}
3597 LD_PATH=${_ld_path-$LD_PATH}
3598
3599 probe_cc hostld "$host_ld"
3600 host_ldflags_filter=$_flags_filter
3601 add_host_ldflags $_flags $_ldflags
3602 HOSTLD_O=${_ld_o-$HOSTLD_O}
3603
3604 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3605     probe_cc depcc "$dep_cc"
3606     CCDEP=${_DEPCMD:-$DEPCMD}
3607     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3608     DEPCCFLAGS=$_flags
3609 fi
3610
3611 if $ar 2>&1 | grep -q Microsoft; then
3612     arflags="-nologo"
3613     ar_o='-out:$@'
3614 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3615     arflags="rq"
3616     ar_o='$@'
3617 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3618     arflags='-Xany -r -c'
3619     ar_o='$@'
3620 elif $ar 2>&1 | grep -q "\[D\] "; then
3621     arflags="rcD"
3622     ar_o='$@'
3623 else
3624     arflags="rc"
3625     ar_o='$@'
3626 fi
3627
3628 add_cflags $extra_cflags
3629 add_cxxflags $extra_cxxflags
3630 add_asflags $extra_cflags
3631
3632 if test -n "$sysroot"; then
3633     case "$cc_type" in
3634         gcc|llvm_gcc|clang)
3635             add_cppflags --sysroot="$sysroot"
3636             add_ldflags --sysroot="$sysroot"
3637 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3638             add_cppflags -isysroot "$sysroot"
3639             add_ldflags -isysroot "$sysroot"
3640         ;;
3641         tms470)
3642             add_cppflags -I"$sysinclude"
3643             add_ldflags  --sysroot="$sysroot"
3644         ;;
3645     esac
3646 fi
3647
3648 if test "$cpu" = host; then
3649     enabled cross_compile &&
3650         die "--cpu=host makes no sense when cross-compiling."
3651
3652     case "$cc_type" in
3653         gcc|llvm_gcc)
3654             check_native(){
3655                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3656                 sed -n "/cc1.*$1=/{
3657                             s/.*$1=\\([^ ]*\\).*/\\1/
3658                             p
3659                             q
3660                         }" $TMPE
3661             }
3662             cpu=$(check_native -march || check_native -mcpu)
3663         ;;
3664     esac
3665
3666     test "${cpu:-host}" = host &&
3667         die "--cpu=host not supported with compiler $cc"
3668 fi
3669
3670 # Deal with common $arch aliases
3671 case "$arch" in
3672     aarch64|arm64)
3673         arch="aarch64"
3674     ;;
3675     arm*|iPad*|iPhone*)
3676         arch="arm"
3677     ;;
3678     mips*|IP*)
3679         arch="mips"
3680     ;;
3681     parisc*|hppa*)
3682         arch="parisc"
3683     ;;
3684     "Power Macintosh"|ppc*|powerpc*)
3685         arch="ppc"
3686     ;;
3687     s390|s390x)
3688         arch="s390"
3689     ;;
3690     sh4|sh)
3691         arch="sh4"
3692     ;;
3693     sun4u|sparc*)
3694         arch="sparc"
3695     ;;
3696     tilegx|tile-gx)
3697         arch="tilegx"
3698     ;;
3699     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3700         arch="x86"
3701     ;;
3702 esac
3703
3704 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3705 enable $arch
3706
3707 # Add processor-specific flags
3708 if enabled aarch64; then
3709
3710     case $cpu in
3711         armv*)
3712             cpuflags="-march=$cpu"
3713         ;;
3714         *)
3715             cpuflags="-mcpu=$cpu"
3716         ;;
3717     esac
3718
3719 elif enabled alpha; then
3720
3721     cpuflags="-mcpu=$cpu"
3722
3723 elif enabled arm; then
3724
3725     check_arm_arch() {
3726         check_cpp_condition stddef.h \
3727             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3728             $cpuflags
3729     }
3730
3731     probe_arm_arch() {
3732         if   check_arm_arch 4;        then echo armv4;
3733         elif check_arm_arch 4T;       then echo armv4t;
3734         elif check_arm_arch 5;        then echo armv5;
3735         elif check_arm_arch 5E;       then echo armv5e;
3736         elif check_arm_arch 5T;       then echo armv5t;
3737         elif check_arm_arch 5TE;      then echo armv5te;
3738         elif check_arm_arch 5TEJ;     then echo armv5te;
3739         elif check_arm_arch 6;        then echo armv6;
3740         elif check_arm_arch 6J;       then echo armv6j;
3741         elif check_arm_arch 6K;       then echo armv6k;
3742         elif check_arm_arch 6Z;       then echo armv6z;
3743         elif check_arm_arch 6ZK;      then echo armv6zk;
3744         elif check_arm_arch 6T2;      then echo armv6t2;
3745         elif check_arm_arch 7;        then echo armv7;
3746         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3747         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3748         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3749         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3750         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3751         fi
3752     }
3753
3754     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3755
3756     case $cpu in
3757         armv*)
3758             cpuflags="-march=$cpu"
3759             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3760         ;;
3761         *)
3762             cpuflags="-mcpu=$cpu"
3763             case $cpu in
3764                 cortex-a*)                               subarch=armv7a  ;;
3765                 cortex-r*)                               subarch=armv7r  ;;
3766                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3767                 arm11*)                                  subarch=armv6   ;;
3768                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3769                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3770                 *)                             subarch=$(probe_arm_arch) ;;
3771             esac
3772         ;;
3773     esac
3774
3775     case "$subarch" in
3776         armv5t*)    enable fast_clz                ;;
3777         armv[6-8]*)
3778             enable fast_clz
3779             disabled fast_unaligned || enable fast_unaligned
3780             ;;
3781     esac
3782
3783 elif enabled avr32; then
3784
3785     case $cpu in
3786         ap7[02]0[0-2])
3787             subarch="avr32_ap"
3788             cpuflags="-mpart=$cpu"
3789         ;;
3790         ap)
3791             subarch="avr32_ap"
3792             cpuflags="-march=$cpu"
3793         ;;
3794         uc3[ab]*)
3795             subarch="avr32_uc"
3796             cpuflags="-mcpu=$cpu"
3797         ;;
3798         uc)
3799             subarch="avr32_uc"
3800             cpuflags="-march=$cpu"
3801         ;;
3802     esac
3803
3804 elif enabled bfin; then
3805
3806     cpuflags="-mcpu=$cpu"
3807
3808 elif enabled mips; then
3809
3810     cpuflags="-march=$cpu"
3811
3812     case $cpu in
3813         24kc)
3814             disable mipsfpu
3815             disable mipsdspr1
3816             disable mipsdspr2
3817         ;;
3818         24kf*)
3819             disable mipsdspr1
3820             disable mipsdspr2
3821         ;;
3822         24kec|34kc|1004kc)
3823             disable mipsfpu
3824             disable mipsdspr2
3825         ;;
3826         24kef*|34kf*|1004kf*)
3827             disable mipsdspr2
3828         ;;
3829         74kc)
3830             disable mipsfpu
3831         ;;
3832     esac
3833
3834 elif enabled ppc; then
3835
3836     disable ldbrx
3837     disable vsx
3838
3839     case $(tolower $cpu) in
3840         601|ppc601|powerpc601)
3841             cpuflags="-mcpu=601"
3842             disable altivec
3843         ;;
3844         603*|ppc603*|powerpc603*)
3845             cpuflags="-mcpu=603"
3846             disable altivec
3847         ;;
3848         604*|ppc604*|powerpc604*)
3849             cpuflags="-mcpu=604"
3850             disable altivec
3851         ;;
3852         g3|75*|ppc75*|powerpc75*)
3853             cpuflags="-mcpu=750"
3854             disable altivec
3855         ;;
3856         g4|745*|ppc745*|powerpc745*)
3857             cpuflags="-mcpu=7450"
3858         ;;
3859         74*|ppc74*|powerpc74*)
3860             cpuflags="-mcpu=7400"
3861         ;;
3862         g5|970|ppc970|powerpc970)
3863             cpuflags="-mcpu=970"
3864         ;;
3865         power[3-8]*)
3866             cpuflags="-mcpu=$cpu"
3867         ;;
3868         cell)
3869             cpuflags="-mcpu=cell"
3870             enable ldbrx
3871         ;;
3872         e500mc)
3873             cpuflags="-mcpu=e500mc"
3874             disable altivec
3875         ;;
3876         e500v2)
3877             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3878             disable altivec
3879             disable dcbzl
3880         ;;
3881         e500)
3882             cpuflags="-mcpu=8540 -mhard-float"
3883             disable altivec
3884             disable dcbzl
3885         ;;
3886     esac
3887
3888 elif enabled sparc; then
3889
3890     case $cpu in
3891         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3892             cpuflags="-mcpu=$cpu"
3893         ;;
3894         ultrasparc*|niagara[234])
3895             cpuflags="-mcpu=$cpu"
3896         ;;
3897     esac
3898
3899 elif enabled x86; then
3900
3901     case $cpu in
3902         i[345]86|pentium)
3903             cpuflags="-march=$cpu"
3904             disable i686
3905             disable mmx
3906         ;;
3907         # targets that do NOT support nopl and conditional mov (cmov)
3908         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3909             cpuflags="-march=$cpu"
3910             disable i686
3911         ;;
3912         # targets that do support nopl and conditional mov (cmov)
3913         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3914         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3915             cpuflags="-march=$cpu"
3916             enable i686
3917             enable fast_cmov
3918         ;;
3919         # targets that do support conditional mov but on which it's slow
3920         pentium4|pentium4m|prescott|nocona)
3921             cpuflags="-march=$cpu"
3922             enable i686
3923             disable fast_cmov
3924         ;;
3925     esac
3926
3927 fi
3928
3929 if [ "$cpu" != generic ]; then
3930     add_cflags  $cpuflags
3931     add_asflags $cpuflags
3932 fi
3933
3934 # compiler sanity check
3935 check_exec <<EOF
3936 int main(void){ return 0; }
3937 EOF
3938 if test "$?" != 0; then
3939     echo "$cc is unable to create an executable file."
3940     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3941         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3942         echo "Only do this if you know what cross compiling means."
3943     fi
3944     die "C compiler test failed."
3945 fi
3946
3947 add_cppflags -D_ISOC99_SOURCE
3948 add_cxxflags -D__STDC_CONSTANT_MACROS
3949 check_cflags -std=c99
3950 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3951 #include <stdlib.h>
3952 EOF
3953 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3954 #include <stdlib.h>
3955 EOF
3956
3957 add_host_cppflags -D_ISOC99_SOURCE
3958 check_host_cflags -std=c99
3959 check_host_cflags -Wall
3960 check_host_cflags -O3
3961
3962 check_64bit(){
3963     arch32=$1
3964     arch64=$2
3965     expr=$3
3966     check_code cc "" "int test[2*($expr) - 1]" &&
3967         subarch=$arch64 || subarch=$arch32
3968 }
3969
3970 case "$arch" in
3971     aarch64|alpha|ia64)
3972         spic=$shared
3973     ;;
3974     mips)
3975         check_64bit mips mips64 '_MIPS_SIM > 1'
3976         spic=$shared
3977     ;;
3978     parisc)
3979         check_64bit parisc parisc64 'sizeof(void *) > 4'
3980         spic=$shared
3981     ;;
3982     ppc)
3983         check_64bit ppc ppc64 'sizeof(void *) > 4'
3984         spic=$shared
3985     ;;
3986     s390)
3987         check_64bit s390 s390x 'sizeof(void *) > 4'
3988         spic=$shared
3989     ;;
3990     sparc)
3991         check_64bit sparc sparc64 'sizeof(void *) > 4'
3992         spic=$shared
3993     ;;
3994     x86)
3995         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3996         # Treat x32 as x64 for now. Note it also needs spic=$shared
3997         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3998             subarch=x86_64
3999         if test "$subarch" = "x86_64"; then
4000             spic=$shared
4001         fi
4002     ;;
4003     ppc)
4004         check_cc <<EOF && subarch="ppc64"
4005         int test[(int)sizeof(char*) - 7];
4006 EOF
4007     ;;
4008 esac
4009
4010 enable $subarch
4011 enabled spic && enable_weak pic
4012
4013 # OS specific
4014 case $target_os in
4015     aix)
4016         SHFLAGS=-shared
4017         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4018         enabled shared && add_ldflags -Wl,-brtl
4019         ;;
4020     android)
4021         disable symver
4022         enable section_data_rel_ro
4023         SLIB_INSTALL_NAME='$(SLIBNAME)'
4024         SLIB_INSTALL_LINKS=
4025         # soname not set on purpose
4026         SHFLAGS=-shared
4027         ;;
4028     haiku)
4029         prefix_default="/boot/common"
4030         network_extralibs="-lnetwork"
4031         host_libs=
4032         ;;
4033     sunos)
4034         SHFLAGS='-shared -Wl,-h,$$(@F)'
4035         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4036         network_extralibs="-lsocket -lnsl"
4037         # When using suncc to build, the Solaris linker will mark
4038         # an executable with each instruction set encountered by
4039         # the Solaris assembler.  As our libraries contain their own
4040         # guards for processor-specific code, instead suppress
4041         # generation of the HWCAPS ELF section on Solaris x86 only.
4042         enabled_all suncc x86 &&
4043             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4044             add_ldflags -Wl,-M,mapfile
4045         nm_default='nm -P -g'
4046         ;;
4047     netbsd)
4048         disable symver
4049         oss_indev_extralibs="-lossaudio"
4050         oss_outdev_extralibs="-lossaudio"
4051         enabled gcc || check_ldflags -Wl,-zmuldefs
4052         ;;
4053     openbsd|bitrig)
4054         disable symver
4055         SHFLAGS='-shared'
4056         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4057         SLIB_INSTALL_LINKS=
4058         oss_indev_extralibs="-lossaudio"
4059         oss_outdev_extralibs="-lossaudio"
4060         ;;
4061     dragonfly)
4062         disable symver
4063         ;;
4064     freebsd)
4065         ;;
4066     bsd/os)
4067         add_extralibs -lpoll -lgnugetopt
4068         strip="strip -d"
4069         ;;
4070     darwin)
4071         enabled ppc && add_asflags -force_cpusubtype_ALL
4072         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4073         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4074         strip="${strip} -x"
4075         add_ldflags -Wl,-dynamic,-search_paths_first
4076         SLIBSUF=".dylib"
4077         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4078         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4079         objformat="macho"
4080         enabled x86_64 && objformat="macho64"
4081         enabled_any pic shared x86_64 ||
4082             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4083         ;;
4084     mingw32*)
4085         if test $target_os = "mingw32ce"; then
4086             disable network
4087         else
4088             target_os=mingw32
4089         fi
4090         LIBTARGET=i386
4091         if enabled x86_64; then
4092             LIBTARGET="i386:x86-64"
4093         elif enabled arm; then
4094             LIBTARGET=arm-wince
4095         fi
4096         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4097         check_ldflags -Wl,--nxcompat
4098         check_ldflags -Wl,--dynamicbase
4099         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4100         shlibdir_default="$bindir_default"
4101         SLIBPREF=""
4102         SLIBSUF=".dll"
4103         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4104         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4105         dlltool="${cross_prefix}dlltool"
4106         if check_cmd lib.exe -list; then
4107             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4108             if enabled x86_64; then
4109                 LIBTARGET=x64
4110             fi
4111         elif check_cmd $dlltool --version; then
4112             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4113         fi
4114         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4115         SLIB_INSTALL_LINKS=
4116         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4117         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4118         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4119         objformat="win32"
4120         ranlib=:
4121         enable dos_paths
4122         ;;
4123     win32|win64)
4124         disable symver
4125         if enabled shared; then
4126             # Link to the import library instead of the normal static library
4127             # for shared libs.
4128             LD_LIB='%.lib'
4129             # Cannot build both shared and static libs with MSVC or icl.
4130             disable static
4131         fi
4132         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4133         shlibdir_default="$bindir_default"
4134         SLIBPREF=""
4135         SLIBSUF=".dll"
4136         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4137         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4138         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4139         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4140         SLIB_INSTALL_LINKS=
4141         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4142         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4143         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4144         objformat="win32"
4145         ranlib=:
4146         enable dos_paths
4147         ;;
4148     cygwin*)
4149         target_os=cygwin
4150         shlibdir_default="$bindir_default"
4151         SLIBPREF="cyg"
4152         SLIBSUF=".dll"
4153         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4154         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4155         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4156         SLIB_INSTALL_LINKS=
4157         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4158         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4159         objformat="win32"
4160         enable dos_paths
4161         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4162         ;;
4163     *-dos|freedos|opendos)
4164         network_extralibs="-lsocket"
4165         objformat="coff"
4166         enable dos_paths
4167         add_cppflags -U__STRICT_ANSI__
4168         ;;
4169     linux)
4170         enable dv1394
4171         enable section_data_rel_ro
4172         ;;
4173     irix*)
4174         target_os=irix
4175         ranlib="echo ignoring ranlib"
4176         ;;
4177     os/2*)
4178         strip="lxlite -CS"
4179         ln_s="cp -f"
4180         objformat="aout"
4181         add_cppflags -D_GNU_SOURCE
4182         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4183         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4184         LIBSUF="_s.a"
4185         SLIBPREF=""
4186         SLIBSUF=".dll"
4187         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4188         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4189         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4190             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4191             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4192             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4193             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4194             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4195         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4196             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4197         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4198         enable dos_paths
4199         enable_weak os2threads
4200         ;;
4201     gnu/kfreebsd)
4202         add_cppflags -D_BSD_SOURCE
4203         ;;
4204     gnu)
4205         ;;
4206     qnx)
4207         add_cppflags -D_QNX_SOURCE
4208         network_extralibs="-lsocket"
4209         ;;
4210     symbian)
4211         SLIBSUF=".dll"
4212         enable dos_paths
4213         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4214         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4215         add_ldflags -Wl,--target1-abs,--no-undefined \
4216                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4217                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4218         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4219                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4220                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4221         ;;
4222     osf1)
4223         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4224         ;;
4225     minix)
4226         ;;
4227     plan9)
4228         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4229                      -D_REENTRANT_SOURCE        \
4230                      -D_RESEARCH_SOURCE         \
4231                      -DFD_SETSIZE=96            \
4232                      -DHAVE_SOCK_OPTS
4233         add_compat strtod.o strtod=avpriv_strtod
4234         network_extralibs='-lbsd'
4235         exeobjs=compat/plan9/main.o
4236         disable ffserver
4237         cp_f='cp'
4238         ;;
4239     none)
4240         ;;
4241     *)
4242         die "Unknown OS '$target_os'."
4243         ;;
4244 esac
4245
4246 # determine libc flavour
4247
4248 probe_libc(){
4249     pfx=$1
4250     pfx_no_=${pfx%_}
4251     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4252     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4253         eval ${pfx}libc_type=uclibc
4254         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4255     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4256         eval ${pfx}libc_type=glibc
4257         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4258     # MinGW headers can be installed on Cygwin, so check for newlib first.
4259     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4260         eval ${pfx}libc_type=newlib
4261         add_${pfx}cppflags -U__STRICT_ANSI__
4262     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4263     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4264         eval ${pfx}libc_type=mingw64
4265         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4266             add_compat msvcrt/snprintf.o
4267             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4268         fi
4269         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4270         eval test \$${pfx_no_}cc_type = "gcc" &&
4271             add_${pfx}cppflags -D__printf__=__gnu_printf__
4272     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4273          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4274         eval ${pfx}libc_type=mingw32
4275         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4276             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4277             die "ERROR: MinGW32 runtime version must be >= 3.15."
4278         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4279         eval test \$${pfx_no_}cc_type = "gcc" &&
4280             add_${pfx}cppflags -D__printf__=__gnu_printf__
4281     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4282         eval ${pfx}libc_type=msvcrt
4283         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4284         # 0x601 by default unless something else is set by the user.
4285         # This can easily lead to us detecting functions only present
4286         # in such new versions and producing binaries requiring windows 7.0.
4287         # Therefore explicitly set the default to XP unless the user has
4288         # set something else on the command line.
4289         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4290             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4291     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4292         eval ${pfx}libc_type=klibc
4293     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4294         eval ${pfx}libc_type=bionic
4295     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4296         eval ${pfx}libc_type=solaris
4297         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4298     fi
4299     check_${pfx}cc <<EOF
4300 #include <time.h>
4301 void *v = localtime_r;
4302 EOF
4303 test "$?" != 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
4304 #include <time.h>
4305 void *v = localtime_r;
4306 EOF
4307
4308 }
4309
4310 probe_libc
4311 test -n "$libc_type" && enable libc_$libc_type
4312 probe_libc host_
4313 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4314
4315 case $libc_type in
4316     bionic)
4317         add_compat strtod.o strtod=avpriv_strtod
4318         ;;
4319     msvcrt)
4320         add_compat strtod.o strtod=avpriv_strtod
4321         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4322                                      _snprintf=avpriv_snprintf  \
4323                                      vsnprintf=avpriv_vsnprintf
4324         ;;
4325 esac
4326
4327 # hacks for compiler/libc/os combinations
4328
4329 if enabled_all tms470 libc_glibc; then
4330     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4331     add_cppflags -D__USER_LABEL_PREFIX__=
4332     add_cppflags -D__builtin_memset=memset
4333     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4334     add_cflags   -pds=48    # incompatible redefinition of macro
4335 fi
4336
4337 if enabled_all ccc libc_glibc; then
4338     add_ldflags -Wl,-z,now  # calls to libots crash without this
4339 fi
4340
4341 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4342     add_cppflags '-I\$(SRC_PATH)/compat/float'
4343
4344 esc(){
4345     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4346 }
4347
4348 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4349
4350 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4351
4352 set_default libdir
4353 : ${shlibdir_default:="$libdir"}
4354
4355 set_default $PATHS_LIST
4356 set_default nm
4357
4358 # we need to build at least one lib type
4359 if ! enabled_any static shared; then
4360     cat <<EOF
4361 At least one library type must be built.
4362 Specify --enable-static to build the static libraries or --enable-shared to
4363 build the shared libraries as well. To only build the shared libraries specify
4364 --disable-static in addition to --enable-shared.
4365 EOF
4366     exit 1;
4367 fi
4368
4369 die_license_disabled() {
4370     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4371 }
4372
4373 die_license_disabled_gpl() {
4374     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4375 }
4376
4377 die_license_disabled gpl frei0r
4378 die_license_disabled gpl libcdio
4379 die_license_disabled gpl libsmbclient
4380 die_license_disabled gpl libutvideo
4381 die_license_disabled gpl libvidstab
4382 die_license_disabled gpl libx264
4383 die_license_disabled gpl libx265
4384 die_license_disabled gpl libxavs
4385 die_license_disabled gpl libxvid
4386 die_license_disabled gpl libzvbi
4387 die_license_disabled gpl x11grab
4388
4389 die_license_disabled nonfree libaacplus
4390 die_license_disabled nonfree libfaac
4391 die_license_disabled nonfree nvenc
4392 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4393 enabled gpl && die_license_disabled_gpl nonfree openssl
4394
4395 die_license_disabled version3 libopencore_amrnb
4396 die_license_disabled version3 libopencore_amrwb
4397 die_license_disabled version3 libsmbclient
4398 die_license_disabled version3 libvo_aacenc
4399 die_license_disabled version3 libvo_amrwbenc
4400
4401 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4402
4403 disabled optimizations || check_cflags -fomit-frame-pointer
4404
4405 enable_weak_pic() {
4406     disabled pic && return
4407     enable pic
4408     add_cppflags -DPIC
4409     case "$target_os" in
4410     mingw*|cygwin*)
4411         ;;
4412     *)
4413         add_cflags -fPIC
4414         ;;
4415     esac
4416     add_asflags  -fPIC
4417 }
4418
4419 enabled pic && enable_weak_pic
4420
4421 check_cc <<EOF || die "Symbol mangling check failed."
4422 int ff_extern;
4423 EOF
4424 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4425 extern_prefix=${sym%%ff_extern*}
4426
4427 check_cc <<EOF && enable_weak inline_asm
4428 void foo(void) { __asm__ volatile ("" ::); }
4429 EOF
4430
4431 _restrict=
4432 for restrict_keyword in restrict __restrict__ __restrict; do
4433     check_cc <<EOF && _restrict=$restrict_keyword && break
4434 void foo(char * $restrict_keyword p);
4435 EOF
4436 done
4437
4438 check_cc <<EOF && enable pragma_deprecated
4439 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4440 EOF
4441
4442 check_cc <<EOF && enable attribute_packed
4443 struct { int x; } __attribute__((packed)) x;
4444 EOF
4445
4446 check_cc <<EOF && enable attribute_may_alias
4447 union { int x; } __attribute__((may_alias)) x;
4448 EOF
4449
4450 check_cc <<EOF || die "endian test failed"
4451 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4452 EOF
4453 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4454
4455 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4456     if ! enabled bigendian && enabled altivec ;then
4457         enable vsx
4458     fi
4459 fi
4460
4461 check_gas() {
4462     log "check_gas using '$as' as AS"
4463     # :vararg is used on aarch64, arm and ppc altivec
4464     check_as <<EOF || return 1
4465 .macro m n, y:vararg=0
4466 \n: .int \y
4467 .endm
4468 m x
4469 EOF
4470     # .altmacro is only used in arm asm
4471     ! enabled arm || check_as <<EOF || return 1
4472 .altmacro
4473 EOF
4474     enable gnu_as
4475     return 0
4476 }
4477
4478 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4479     nogas=:
4480     enabled_any arm aarch64 && nogas=die
4481     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4482     as_noop=-v
4483
4484     case $as_type in
4485         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4486         gcc)  gaspp_as_type=gas ;;
4487         *)    gaspp_as_type=$as_type ;;
4488     esac
4489
4490     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4491
4492     test "${as#*gas-preprocessor.pl}" != "$as" ||
4493     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4494         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4495
4496     if ! check_gas ; then
4497         as=${gas:=$as}
4498         check_gas || \
4499             $nogas "GNU assembler not found, install/update gas-preprocessor"
4500     fi
4501
4502     check_as <<EOF && enable as_func
4503 .func test
4504 .endfunc
4505 EOF
4506 fi
4507
4508 check_inline_asm inline_asm_labels '"1:\n"'
4509
4510 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4511
4512 if enabled aarch64; then
4513     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4514     # internal assembler in clang 3.3 does not support this instruction
4515     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4516     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4517
4518     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4519
4520 elif enabled alpha; then
4521
4522     check_cflags -mieee
4523
4524 elif enabled arm; then
4525
4526     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4527 float func(float a, float b){ return a+b; }
4528 EOF
4529
4530     enabled thumb && check_cflags -mthumb || check_cflags -marm
4531
4532     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4533         enable vfp_args
4534     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4535         case "${cross_prefix:-$cc}" in
4536             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4537             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4538 __asm__ (".eabi_attribute 28, 1");
4539 int main(void) { return 0; }
4540 EOF
4541         esac
4542         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4543     fi
4544
4545     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4546     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4547     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4548     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4549     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4550     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4551     enabled setend  && check_insn setend  'setend be'
4552
4553     [ $target_os = linux ] || [ $target_os = android ] ||
4554         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4555             $ARCH_EXT_LIST_ARM
4556
4557     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4558
4559     check_as <<EOF && enable as_dn_directive
4560 ra .dn d0.i16
4561 .unreq ra
4562 EOF
4563
4564     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4565
4566 elif enabled mips; then
4567
4568     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4569     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4570      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4571     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4572      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4573     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4574      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4575     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4576      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4577
4578 elif enabled parisc; then
4579
4580     if enabled gcc; then
4581         case $($cc -dumpversion) in
4582             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4583         esac
4584     fi
4585
4586 elif enabled ppc; then
4587
4588     enable local_aligned_8 local_aligned_16 local_aligned_32
4589
4590     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4591     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4592     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4593     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4594
4595     # AltiVec flags: The FSF version of GCC differs from the Apple version
4596     if enabled altivec; then
4597         check_cflags -maltivec -mabi=altivec &&
4598         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4599         check_cflags -faltivec
4600
4601         # check if our compiler supports Motorola AltiVec C API
4602         check_cc <<EOF || disable altivec
4603 $inc_altivec_h
4604 int main(void) {
4605     vector signed int v1 = (vector signed int) { 0 };
4606     vector signed int v2 = (vector signed int) { 1 };
4607     v1 = vec_add(v1, v2);
4608     return 0;
4609 }
4610 EOF
4611
4612         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4613     fi
4614
4615     if enabled vsx; then
4616         check_cflags -mvsx
4617     fi
4618 elif enabled x86; then
4619
4620     check_builtin rdtsc    intrin.h   "__rdtsc()"
4621     check_builtin mm_empty mmintrin.h "_mm_empty()"
4622
4623     enable local_aligned_8 local_aligned_16 local_aligned_32
4624
4625     # check whether EBP is available on x86
4626     # As 'i' is stored on the stack, this program will crash
4627     # if the base pointer is used to access it because the
4628     # base pointer is cleared in the inline assembly code.
4629     check_exec_crash <<EOF && enable ebp_available
4630 volatile int i=0;
4631 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4632 return i;
4633 EOF
4634
4635     # check whether EBX is available on x86
4636     check_inline_asm ebx_available '""::"b"(0)' &&
4637         check_inline_asm ebx_available '"":::"%ebx"'
4638
4639     # check whether xmm clobbers are supported
4640     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4641
4642     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4643         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4644
4645     # check whether binutils is new enough to compile SSSE3/MMXEXT
4646     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4647     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4648
4649     if ! disabled_any asm mmx yasm; then
4650         if check_cmd $yasmexe --version; then
4651             enabled x86_64 && yasm_extra="-m amd64"
4652             yasm_debug="-g dwarf2"
4653         elif check_cmd nasm -v; then
4654             yasmexe=nasm
4655             yasm_debug="-g -F dwarf"
4656             if enabled x86_64; then
4657                 case "$objformat" in
4658                     elf)   objformat=elf64 ;;
4659                     win32) objformat=win64 ;;
4660                 esac
4661             fi
4662         fi
4663
4664         YASMFLAGS="-f $objformat $yasm_extra"
4665         enabled pic               && append YASMFLAGS "-DPIC"
4666         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4667         case "$objformat" in
4668             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4669         esac
4670
4671         check_yasm "movbe ecx, [5]" && enable yasm ||
4672             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4673         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4674         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4675         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4676         check_yasm "CPU amdnop" || disable cpunop
4677     fi
4678
4679     case "$cpu" in
4680         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4681             disable fast_clz
4682         ;;
4683     esac
4684
4685 fi
4686
4687 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4688
4689 check_ldflags -Wl,--as-needed
4690 check_ldflags -Wl,-z,noexecstack
4691
4692 if check_func dlopen; then
4693     ldl=
4694 elif check_func dlopen -ldl; then
4695     ldl=-ldl
4696 fi
4697
4698 frei0r_filter_extralibs='$ldl'
4699 frei0r_src_filter_extralibs='$ldl'
4700 ladspa_filter_extralibs='$ldl'
4701 nvenc_encoder_extralibs='$ldl'
4702
4703 if ! disabled network; then
4704     check_func getaddrinfo $network_extralibs
4705     check_func getservbyport $network_extralibs
4706     check_func inet_aton $network_extralibs
4707
4708     check_type netdb.h "struct addrinfo"
4709     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4710     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4711     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4712     check_type poll.h "struct pollfd"
4713     check_type netinet/sctp.h "struct sctp_event_subscribe"
4714     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4715     check_type netinet/in.h "struct sockaddr_in6"
4716     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4717     check_type "sys/types.h sys/socket.h" socklen_t
4718
4719     # Prefer arpa/inet.h over winsock2
4720     if check_header arpa/inet.h ; then
4721         check_func closesocket
4722     elif check_header winsock2.h ; then
4723         check_func_headers winsock2.h closesocket -lws2 &&
4724             network_extralibs="-lws2" ||
4725         { check_func_headers winsock2.h closesocket -lws2_32 &&
4726             network_extralibs="-lws2_32"; } || disable winsock2_h network
4727         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4728
4729         check_type ws2tcpip.h socklen_t
4730         check_type ws2tcpip.h "struct addrinfo"
4731         check_type ws2tcpip.h "struct group_source_req"
4732         check_type ws2tcpip.h "struct ip_mreq_source"
4733         check_type ws2tcpip.h "struct ipv6_mreq"
4734         check_type winsock2.h "struct pollfd"
4735         check_struct winsock2.h "struct sockaddr" sa_len
4736         check_type ws2tcpip.h "struct sockaddr_in6"
4737         check_type ws2tcpip.h "struct sockaddr_storage"
4738     else
4739         disable network
4740     fi
4741 fi
4742
4743 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4744 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4745 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4746 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4747 check_builtin sarestart signal.h "SA_RESTART"
4748 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4749
4750 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4751 check_func  ${malloc_prefix}memalign            && enable memalign
4752 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4753
4754 check_func  access
4755 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4756 check_func  fcntl
4757 check_func  fork
4758 check_func  gethrtime
4759 check_func  getopt
4760 check_func  getrusage
4761 check_func  gettimeofday
4762 check_func  gmtime_r
4763 check_func  isatty
4764 check_func  localtime_r
4765 check_func  mach_absolute_time
4766 check_func  mkstemp
4767 check_func  mmap
4768 check_func  mprotect
4769 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4770 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4771 check_func  sched_getaffinity
4772 check_func  setrlimit
4773 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4774 check_func  strerror_r
4775 check_func  sysconf
4776 check_func  sysctl
4777 check_func  usleep
4778
4779 check_func_headers conio.h kbhit
4780 check_func_headers io.h setmode
4781 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4782 check_func_headers stdlib.h getenv
4783
4784 check_func_headers windows.h CoTaskMemFree -lole32
4785 check_func_headers windows.h GetProcessAffinityMask
4786 check_func_headers windows.h GetProcessTimes
4787 check_func_headers windows.h GetSystemTimeAsFileTime
4788 check_func_headers windows.h MapViewOfFile
4789 check_func_headers windows.h PeekNamedPipe
4790 check_func_headers windows.h SetConsoleTextAttribute
4791 check_func_headers windows.h Sleep
4792 check_func_headers windows.h VirtualAlloc
4793 check_struct windows.h "CONDITION_VARIABLE" Ptr
4794 check_func_headers glob.h glob
4795 enabled xlib &&
4796     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4797
4798 check_header direct.h
4799 check_header dlfcn.h
4800 check_header dxva.h
4801 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4802 check_header io.h
4803 check_header libcrystalhd/libcrystalhd_if.h
4804 check_header mach/mach_time.h
4805 check_header malloc.h
4806 check_header net/udplite.h
4807 check_header poll.h
4808 check_header sys/mman.h
4809 check_header sys/param.h
4810 check_header sys/resource.h
4811 check_header sys/select.h
4812 check_header sys/time.h
4813 check_header sys/un.h
4814 check_header termios.h
4815 check_header unistd.h
4816 check_header vdpau/vdpau.h
4817 check_header vdpau/vdpau_x11.h
4818 check_header VideoDecodeAcceleration/VDADecoder.h
4819 check_header windows.h
4820 check_header X11/extensions/XvMClib.h
4821 check_header asm/types.h
4822
4823 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4824 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4825 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4826
4827 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4828
4829 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4830
4831 if ! disabled w32threads && ! enabled pthreads; then
4832     check_func_headers "windows.h process.h" _beginthreadex &&
4833         enable w32threads || disable w32threads
4834 fi
4835
4836 # check for some common methods of building with pthread support
4837 # do this before the optional library checks as some of them require pthreads
4838 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4839     enable pthreads
4840     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4841         add_cflags -pthread
4842         add_extralibs -pthread
4843     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4844         add_cflags -pthreads
4845         add_extralibs -pthreads
4846     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4847         add_cflags -ldl -pthread
4848         add_extralibs -ldl -pthread
4849     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4850         add_extralibs -lpthreadGC2
4851     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4852         :
4853     elif ! check_func pthread_join && ! check_func pthread_create; then
4854         disable pthreads
4855     fi
4856     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4857 fi
4858
4859
4860 if enabled pthreads; then
4861   check_func pthread_cancel
4862 fi
4863
4864 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4865 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4866 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4867
4868 check_lib math.h sin -lm && LIBM="-lm"
4869 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4870
4871 atan2f_args=2
4872 ldexpf_args=2
4873 powf_args=2
4874
4875 for func in $MATH_FUNCS; do
4876     eval check_mathfunc $func \${${func}_args:-1}
4877 done
4878