606af60141457342e8421b367828a5382785e32b
[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 [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
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-libdcadec       enable DCA decoding via libdcadec [no]
214   --enable-libfaac         enable AAC encoding via libfaac [no]
215   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
216   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
217   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
218   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
219   --enable-libgme          enable Game Music Emu via libgme [no]
220   --enable-libgsm          enable GSM de/encoding via libgsm [no]
221   --enable-libiec61883     enable iec61883 via libiec61883 [no]
222   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
223   --enable-libmfx          enable HW acceleration through libmfx
224   --enable-libmodplug      enable ModPlug via libmodplug [no]
225   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
226   --enable-libnut          enable NUT (de)muxing via libnut,
227                            native (de)muxer exists [no]
228   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
229   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
230   --enable-libopencv       enable video filtering via libopencv [no]
231   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
232   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
233   --enable-libopus         enable Opus de/encoding via libopus [no]
234   --enable-libpulse        enable Pulseaudio input via libpulse [no]
235   --enable-libquvi         enable quvi input via libquvi [no]
236   --enable-librtmp         enable RTMP[E] support via librtmp [no]
237   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
238   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
239   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
240   --enable-libsoxr         enable Include libsoxr resampling [no]
241   --enable-libspeex        enable Speex de/encoding via libspeex [no]
242   --enable-libssh          enable SFTP protocol via libssh [no]
243   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
244   --enable-libtheora       enable Theora encoding via libtheora [no]
245   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
246   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
247   --enable-libv4l2         enable libv4l2/v4l-utils [no]
248   --enable-libvidstab      enable video stabilization using vid.stab [no]
249   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
250   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
251   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
252                            native implementation exists [no]
253   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
254   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
255   --enable-libwebp         enable WebP encoding via libwebp [no]
256   --enable-libx264         enable H.264 encoding via x264 [no]
257   --enable-libx265         enable HEVC encoding via x265 [no]
258   --enable-libxavs         enable AVS encoding via xavs [no]
259   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
260   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
261   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
262   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
263   --enable-libxvid         enable Xvid encoding via xvidcore,
264                            native MPEG-4/Xvid encoder exists [no]
265   --enable-libzmq          enable message passing via libzmq [no]
266   --enable-libzvbi         enable teletext support via libzvbi [no]
267   --disable-lzma           disable lzma [autodetect]
268   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
269   --enable-nvenc           enable NVIDIA NVENC support [no]
270   --enable-openal          enable OpenAL 1.1 capture support [no]
271   --enable-opencl          enable OpenCL code
272   --enable-opengl          enable OpenGL rendering [no]
273   --enable-openssl         enable openssl, needed for https support
274                            if gnutls is not used [no]
275   --disable-sdl            disable sdl [autodetect]
276   --enable-x11grab         enable X11 grabbing (legacy) [no]
277   --disable-xlib           disable xlib [autodetect]
278   --disable-zlib           disable zlib [autodetect]
279
280 Toolchain options:
281   --arch=ARCH              select architecture [$arch]
282   --cpu=CPU                select the minimum required CPU (affects
283                            instruction selection, may crash on older CPUs)
284   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
285   --progs-suffix=SUFFIX    program name suffix []
286   --enable-cross-compile   assume a cross-compiler is used
287   --sysroot=PATH           root of cross-build tree
288   --sysinclude=PATH        location of cross-build system headers
289   --target-os=OS           compiler targets OS [$target_os]
290   --target-exec=CMD        command to run executables on target
291   --target-path=DIR        path to view of build directory on target
292   --target-samples=DIR     path to samples directory on target
293   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
294   --toolchain=NAME         set tool defaults according to NAME
295   --nm=NM                  use nm tool NM [$nm_default]
296   --ar=AR                  use archive tool AR [$ar_default]
297   --as=AS                  use assembler AS [$as_default]
298   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
299   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
300   --cc=CC                  use C compiler CC [$cc_default]
301   --cxx=CXX                use C compiler CXX [$cxx_default]
302   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
303   --ld=LD                  use linker LD [$ld_default]
304   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
305   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
306   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
307   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
308   --host-cc=HOSTCC         use host C compiler HOSTCC
309   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
310   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
311   --host-ld=HOSTLD         use host linker HOSTLD
312   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
313   --host-libs=HLIBS        use libs HLIBS when linking for host
314   --host-os=OS             compiler host OS [$target_os]
315   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
316   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
317   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
318   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
319   --extra-libs=ELIBS       add ELIBS [$ELIBS]
320   --extra-version=STRING   version string suffix []
321   --optflags=OPTFLAGS      override optimization-related compiler flags
322   --build-suffix=SUFFIX    library name suffix []
323   --enable-pic             build position-independent code
324   --enable-thumb           compile for Thumb instruction set
325   --enable-lto             use link-time optimization
326
327 Advanced options (experts only):
328   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
329   --disable-symver         disable symbol versioning
330   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
331   --disable-safe-bitstream-reader
332                            disable buffer boundary checking in bitreaders
333                            (faster, but may crash)
334   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
335   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
336
337 Optimization options (experts only):
338   --disable-asm            disable all assembly optimizations
339   --disable-altivec        disable AltiVec optimizations
340   --disable-amd3dnow       disable 3DNow! optimizations
341   --disable-amd3dnowext    disable 3DNow! extended optimizations
342   --disable-mmx            disable MMX optimizations
343   --disable-mmxext         disable MMXEXT optimizations
344   --disable-sse            disable SSE optimizations
345   --disable-sse2           disable SSE2 optimizations
346   --disable-sse3           disable SSE3 optimizations
347   --disable-ssse3          disable SSSE3 optimizations
348   --disable-sse4           disable SSE4 optimizations
349   --disable-sse42          disable SSE4.2 optimizations
350   --disable-avx            disable AVX optimizations
351   --disable-xop            disable XOP optimizations
352   --disable-fma3           disable FMA3 optimizations
353   --disable-fma4           disable FMA4 optimizations
354   --disable-avx2           disable AVX2 optimizations
355   --disable-armv5te        disable armv5te optimizations
356   --disable-armv6          disable armv6 optimizations
357   --disable-armv6t2        disable armv6t2 optimizations
358   --disable-vfp            disable VFP optimizations
359   --disable-neon           disable NEON optimizations
360   --disable-inline-asm     disable use of inline assembly
361   --disable-yasm           disable use of nasm/yasm assembly
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     qsvdec_example
1333     remuxing_example
1334     resampling_audio_example
1335     scaling_video_example
1336     transcode_aac_example
1337     transcoding_example
1338 "
1339
1340 EXTERNAL_LIBRARY_LIST="
1341     avisynth
1342     bzlib
1343     crystalhd
1344     decklink
1345     frei0r
1346     gnutls
1347     iconv
1348     ladspa
1349     libaacplus
1350     libass
1351     libbluray
1352     libbs2b
1353     libcaca
1354     libcdio
1355     libcelt
1356     libdc1394
1357     libdcadec
1358     libfaac
1359     libfdk_aac
1360     libflite
1361     libfontconfig
1362     libfreetype
1363     libfribidi
1364     libgme
1365     libgsm
1366     libiec61883
1367     libilbc
1368     libmfx
1369     libmodplug
1370     libmp3lame
1371     libnut
1372     libopencore_amrnb
1373     libopencore_amrwb
1374     libopencv
1375     libopenh264
1376     libopenjpeg
1377     libopus
1378     libpulse
1379     libquvi
1380     librtmp
1381     libschroedinger
1382     libshine
1383     libsmbclient
1384     libsoxr
1385     libspeex
1386     libssh
1387     libstagefright_h264
1388     libtheora
1389     libtwolame
1390     libutvideo
1391     libv4l2
1392     libvidstab
1393     libvo_aacenc
1394     libvo_amrwbenc
1395     libvorbis
1396     libvpx
1397     libwavpack
1398     libwebp
1399     libx264
1400     libx265
1401     libxavs
1402     libxcb
1403     libxcb_shm
1404     libxcb_shape
1405     libxcb_xfixes
1406     libxvid
1407     libzmq
1408     libzvbi
1409     lzma
1410     nvenc
1411     openal
1412     opencl
1413     opengl
1414     openssl
1415     sdl
1416     x11grab
1417     xlib
1418     zlib
1419 "
1420
1421 DOCUMENT_LIST="
1422     doc
1423     htmlpages
1424     manpages
1425     podpages
1426     txtpages
1427 "
1428
1429 FEATURE_LIST="
1430     ftrapv
1431     gray
1432     hardcoded_tables
1433     runtime_cpudetect
1434     safe_bitstream_reader
1435     shared
1436     small
1437     static
1438     swscale_alpha
1439 "
1440
1441 HWACCEL_LIST="
1442     dxva2
1443     vaapi
1444     vda
1445     vdpau
1446     xvmc
1447 "
1448
1449 LIBRARY_LIST="
1450     avcodec
1451     avdevice
1452     avfilter
1453     avformat
1454     avresample
1455     avutil
1456     postproc
1457     swresample
1458     swscale
1459 "
1460
1461 LICENSE_LIST="
1462     gpl
1463     nonfree
1464     version3
1465 "
1466
1467 PROGRAM_LIST="
1468     ffplay
1469     ffprobe
1470     ffserver
1471     ffmpeg
1472 "
1473
1474 SUBSYSTEM_LIST="
1475     dct
1476     dwt
1477     error_resilience
1478     faan
1479     fast_unaligned
1480     fft
1481     lsp
1482     lzo
1483     mdct
1484     pixelutils
1485     network
1486     rdft
1487 "
1488
1489 CONFIG_LIST="
1490     $COMPONENT_LIST
1491     $DOCUMENT_LIST
1492     $EXAMPLE_LIST
1493     $EXTERNAL_LIBRARY_LIST
1494     $FEATURE_LIST
1495     $HWACCEL_LIST
1496     $LICENSE_LIST
1497     $LIBRARY_LIST
1498     $PROGRAM_LIST
1499     $SUBSYSTEM_LIST
1500     fontconfig
1501     incompatible_libav_abi
1502     memalign_hack
1503     memory_poisoning
1504     neon_clobber_test
1505     pic
1506     pod2man
1507     raise_major
1508     thumb
1509     xmm_clobber_test
1510 "
1511
1512 THREADS_LIST="
1513     pthreads
1514     os2threads
1515     w32threads
1516 "
1517
1518 ATOMICS_LIST="
1519     atomics_gcc
1520     atomics_suncc
1521     atomics_win32
1522 "
1523
1524 ARCH_LIST="
1525     aarch64
1526     alpha
1527     arm
1528     avr32
1529     avr32_ap
1530     avr32_uc
1531     bfin
1532     ia64
1533     m68k
1534     mips
1535     mips64
1536     parisc
1537     ppc
1538     ppc64
1539     s390
1540     sh4
1541     sparc
1542     sparc64
1543     tilegx
1544     tilepro
1545     tomi
1546     x86
1547     x86_32
1548     x86_64
1549 "
1550
1551 ARCH_EXT_LIST_ARM="
1552     armv5te
1553     armv6
1554     armv6t2
1555     armv8
1556     neon
1557     vfp
1558     vfpv3
1559     setend
1560 "
1561
1562 ARCH_EXT_LIST_MIPS="
1563     mipsfpu
1564     mips32r2
1565     mipsdspr1
1566     mipsdspr2
1567 "
1568
1569 ARCH_EXT_LIST_X86_SIMD="
1570     amd3dnow
1571     amd3dnowext
1572     avx
1573     avx2
1574     fma3
1575     fma4
1576     mmx
1577     mmxext
1578     sse
1579     sse2
1580     sse3
1581     sse4
1582     sse42
1583     ssse3
1584     xop
1585 "
1586
1587 ARCH_EXT_LIST_PPC="
1588     altivec
1589     dcbzl
1590     ldbrx
1591     ppc4xx
1592     vsx
1593 "
1594
1595 ARCH_EXT_LIST_X86="
1596     $ARCH_EXT_LIST_X86_SIMD
1597     cpunop
1598     i686
1599 "
1600
1601 ARCH_EXT_LIST="
1602     $ARCH_EXT_LIST_ARM
1603     $ARCH_EXT_LIST_PPC
1604     $ARCH_EXT_LIST_X86
1605     $ARCH_EXT_LIST_MIPS
1606     loongson
1607 "
1608
1609 ARCH_FEATURES="
1610     aligned_stack
1611     fast_64bit
1612     fast_clz
1613     fast_cmov
1614     local_aligned_8
1615     local_aligned_16
1616     local_aligned_32
1617     simd_align_16
1618 "
1619
1620 BUILTIN_LIST="
1621     atomic_cas_ptr
1622     atomic_compare_exchange
1623     machine_rw_barrier
1624     MemoryBarrier
1625     mm_empty
1626     rdtsc
1627     sarestart
1628     sync_val_compare_and_swap
1629 "
1630 HAVE_LIST_CMDLINE="
1631     inline_asm
1632     symver
1633     yasm
1634 "
1635
1636 HAVE_LIST_PUB="
1637     bigendian
1638     fast_unaligned
1639     incompatible_libav_abi
1640 "
1641
1642 HEADERS_LIST="
1643     alsa_asoundlib_h
1644     altivec_h
1645     arpa_inet_h
1646     asm_types_h
1647     cdio_paranoia_h
1648     cdio_paranoia_paranoia_h
1649     dev_bktr_ioctl_bt848_h
1650     dev_bktr_ioctl_meteor_h
1651     dev_ic_bt8xx_h
1652     dev_video_bktr_ioctl_bt848_h
1653     dev_video_meteor_ioctl_meteor_h
1654     direct_h
1655     dlfcn_h
1656     dxva_h
1657     ES2_gl_h
1658     gsm_h
1659     io_h
1660     mach_mach_time_h
1661     machine_ioctl_bt848_h
1662     machine_ioctl_meteor_h
1663     malloc_h
1664     openjpeg_1_5_openjpeg_h
1665     OpenGL_gl3_h
1666     poll_h
1667     sndio_h
1668     soundcard_h
1669     sys_mman_h
1670     sys_param_h
1671     sys_resource_h
1672     sys_select_h
1673     sys_soundcard_h
1674     sys_time_h
1675     sys_un_h
1676     sys_videoio_h
1677     termios_h
1678     udplite_h
1679     unistd_h
1680     windows_h
1681     winsock2_h
1682 "
1683
1684 INTRINSICS_LIST="
1685     intrinsics_neon
1686 "
1687
1688 MATH_FUNCS="
1689     atanf
1690     atan2f
1691     cbrt
1692     cbrtf
1693     cosf
1694     exp2
1695     exp2f
1696     expf
1697     isinf
1698     isnan
1699     ldexpf
1700     llrint
1701     llrintf
1702     log2
1703     log2f
1704     log10f
1705     lrint
1706     lrintf
1707     powf
1708     rint
1709     round
1710     roundf
1711     sinf
1712     trunc
1713     truncf
1714 "
1715
1716 SYSTEM_FUNCS="
1717     access
1718     aligned_malloc
1719     clock_gettime
1720     closesocket
1721     CommandLineToArgvW
1722     CoTaskMemFree
1723     CryptGenRandom
1724     dlopen
1725     fcntl
1726     flt_lim
1727     fork
1728     getaddrinfo
1729     gethrtime
1730     getopt
1731     GetProcessAffinityMask
1732     GetProcessMemoryInfo
1733     GetProcessTimes
1734     getrusage
1735     getservbyport
1736     GetSystemTimeAsFileTime
1737     gettimeofday
1738     glob
1739     glXGetProcAddress
1740     gmtime_r
1741     inet_aton
1742     isatty
1743     jack_port_get_latency_range
1744     kbhit
1745     localtime_r
1746     lzo1x_999_compress
1747     mach_absolute_time
1748     MapViewOfFile
1749     memalign
1750     mkstemp
1751     mmap
1752     mprotect
1753     nanosleep
1754     PeekNamedPipe
1755     posix_memalign
1756     pthread_cancel
1757     sched_getaffinity
1758     SetConsoleTextAttribute
1759     setmode
1760     setrlimit
1761     Sleep
1762     strerror_r
1763     sysconf
1764     sysctl
1765     usleep
1766     VirtualAlloc
1767     wglGetProcAddress
1768 "
1769
1770 TOOLCHAIN_FEATURES="
1771     as_dn_directive
1772     as_func
1773     as_object_arch
1774     asm_mod_q
1775     attribute_may_alias
1776     attribute_packed
1777     ebp_available
1778     ebx_available
1779     gnu_as
1780     gnu_windres
1781     ibm_asm
1782     inline_asm_labels
1783     inline_asm_nonlocal_labels
1784     inline_asm_direct_symbol_refs
1785     pragma_deprecated
1786     rsync_contimeout
1787     symver_asm_label
1788     symver_gnu_asm
1789     vfp_args
1790     xform_asm
1791     xmm_clobbers
1792 "
1793
1794 TYPES_LIST="
1795     CONDITION_VARIABLE_Ptr
1796     DXVA_PicParams_HEVC
1797     socklen_t
1798     struct_addrinfo
1799     struct_group_source_req
1800     struct_ip_mreq_source
1801     struct_ipv6_mreq
1802     struct_pollfd
1803     struct_rusage_ru_maxrss
1804     struct_sctp_event_subscribe
1805     struct_sockaddr_in6
1806     struct_sockaddr_sa_len
1807     struct_sockaddr_storage
1808     struct_stat_st_mtim_tv_nsec
1809     struct_v4l2_frmivalenum_discrete
1810 "
1811
1812 HAVE_LIST="
1813     $ARCH_EXT_LIST
1814     $(add_suffix _external $ARCH_EXT_LIST)
1815     $(add_suffix _inline   $ARCH_EXT_LIST)
1816     $ARCH_FEATURES
1817     $ATOMICS_LIST
1818     $BUILTIN_LIST
1819     $HAVE_LIST_CMDLINE
1820     $HAVE_LIST_PUB
1821     $HEADERS_LIST
1822     $INTRINSICS_LIST
1823     $MATH_FUNCS
1824     $SYSTEM_FUNCS
1825     $THREADS_LIST
1826     $TOOLCHAIN_FEATURES
1827     $TYPES_LIST
1828     atomics_native
1829     dos_paths
1830     dxva2api_cobj
1831     dxva2_lib
1832     libc_msvcrt
1833     libdc1394_1
1834     libdc1394_2
1835     makeinfo
1836     makeinfo_html
1837     perl
1838     pod2man
1839     sdl
1840     section_data_rel_ro
1841     texi2html
1842     threads
1843     vaapi_x11
1844     vdpau_x11
1845     xlib
1846 "
1847
1848 # options emitted with CONFIG_ prefix but not available on the command line
1849 CONFIG_EXTRA="
1850     aandcttables
1851     ac3dsp
1852     audio_frame_queue
1853     audiodsp
1854     blockdsp
1855     bswapdsp
1856     cabac
1857     dvprofile
1858     exif
1859     faandct
1860     faanidct
1861     fdctdsp
1862     fmtconvert
1863     frame_thread_encoder
1864     gcrypt
1865     golomb
1866     gplv3
1867     h263dsp
1868     h264chroma
1869     h264dsp
1870     h264pred
1871     h264qpel
1872     hpeldsp
1873     huffman
1874     huffyuvdsp
1875     huffyuvencdsp
1876     idctdsp
1877     iirfilter
1878     imdct15
1879     intrax8
1880     lgplv3
1881     llauddsp
1882     llviddsp
1883     lpc
1884     me_cmp
1885     mpeg_er
1886     mpegaudio
1887     mpegaudiodsp
1888     mpegvideo
1889     mpegvideoenc
1890     nettle
1891     pixblockdsp
1892     qpeldsp
1893     qsv
1894     qsvdec
1895     qsvenc
1896     rangecoder
1897     riffdec
1898     riffenc
1899     rtpdec
1900     rtpenc_chain
1901     sinewin
1902     startcode
1903     tpeldsp
1904     videodsp
1905     vp3dsp
1906     wma_freqs
1907 "
1908
1909 CMDLINE_SELECT="
1910     $ARCH_EXT_LIST
1911     $CONFIG_LIST
1912     $HAVE_LIST_CMDLINE
1913     $THREADS_LIST
1914     asm
1915     cross_compile
1916     debug
1917     extra_warnings
1918     logging
1919     lto
1920     optimizations
1921     rpath
1922     stripping
1923 "
1924
1925 PATHS_LIST="
1926     bindir
1927     datadir
1928     docdir
1929     incdir
1930     libdir
1931     mandir
1932     prefix
1933     shlibdir
1934 "
1935
1936 CMDLINE_SET="
1937     $PATHS_LIST
1938     ar
1939     arch
1940     as
1941     assert_level
1942     build_suffix
1943     cc
1944     cpu
1945     cross_prefix
1946     cxx
1947     dep_cc
1948     doxygen
1949     extra_version
1950     gas
1951     host_cc
1952     host_cflags
1953     host_ld
1954     host_ldflags
1955     host_libs
1956     host_os
1957     install
1958     ld
1959     logfile
1960     malloc_prefix
1961     nm
1962     optflags
1963     pkg_config
1964     pkg_config_flags
1965     progs_suffix
1966     random_seed
1967     ranlib
1968     samples
1969     strip
1970     sws_max_filter_size
1971     sysinclude
1972     sysroot
1973     target_exec
1974     target_os
1975     target_path
1976     target_samples
1977     tempprefix
1978     toolchain
1979     valgrind
1980     yasmexe
1981 "
1982
1983 CMDLINE_APPEND="
1984     extra_cflags
1985     extra_cxxflags
1986     host_cppflags
1987 "
1988
1989 # code dependency declarations
1990
1991 # architecture extensions
1992
1993 armv5te_deps="arm"
1994 armv6_deps="arm"
1995 armv6t2_deps="arm"
1996 armv8_deps="aarch64"
1997 neon_deps_any="aarch64 arm"
1998 intrinsics_neon_deps="neon"
1999 vfp_deps_any="aarch64 arm"
2000 vfpv3_deps="vfp"
2001 setend_deps="arm"
2002
2003 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2004
2005 mipsfpu_deps="mips"
2006 mipsdspr1_deps="mips"
2007 mipsdspr2_deps="mips"
2008
2009 altivec_deps="ppc"
2010 ppc4xx_deps="ppc"
2011 vsx_deps="ppc"
2012
2013 cpunop_deps="i686"
2014 x86_64_select="i686"
2015 x86_64_suggest="fast_cmov"
2016
2017 amd3dnow_deps="mmx"
2018 amd3dnowext_deps="amd3dnow"
2019 i686_deps="x86"
2020 mmx_deps="x86"
2021 mmxext_deps="mmx"
2022 sse_deps="mmxext"
2023 sse2_deps="sse"
2024 sse3_deps="sse2"
2025 ssse3_deps="sse3"
2026 sse4_deps="ssse3"
2027 sse42_deps="sse4"
2028 avx_deps="sse42"
2029 xop_deps="avx"
2030 fma3_deps="avx"
2031 fma4_deps="avx"
2032 avx2_deps="avx"
2033
2034 mmx_external_deps="yasm"
2035 mmx_inline_deps="inline_asm"
2036 mmx_suggest="mmx_external mmx_inline"
2037
2038 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2039     eval dep=\$${ext}_deps
2040     eval ${ext}_external_deps='"${dep}_external"'
2041     eval ${ext}_inline_deps='"${dep}_inline"'
2042     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2043 done
2044
2045 aligned_stack_if_any="aarch64 ppc x86"
2046 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2047 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2048 fast_unaligned_if_any="aarch64 ppc x86"
2049 simd_align_16_if_any="altivec neon sse"
2050
2051 # system capabilities
2052
2053 symver_if_any="symver_asm_label symver_gnu_asm"
2054
2055 # threading support
2056 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2057 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2058 atomics_win32_if="MemoryBarrier"
2059 atomics_native_if_any="$ATOMICS_LIST"
2060 w32threads_deps="atomics_native"
2061 threads_if_any="$THREADS_LIST"
2062
2063 # subsystems
2064 dct_select="rdft"
2065 error_resilience_select="me_cmp"
2066 faandct_deps="faan fdctdsp"
2067 faanidct_deps="faan idctdsp"
2068 frame_thread_encoder_deps="encoders threads"
2069 intrax8_select="error_resilience"
2070 mdct_select="fft"
2071 rdft_select="fft"
2072 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2073 mpeg_er_select="error_resilience"
2074 mpegaudio_select="mpegaudiodsp"
2075 mpegaudiodsp_select="dct"
2076 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2077 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2078 qsvdec_select="qsv"
2079 qsvenc_select="qsv"
2080
2081 # decoders / encoders
2082 aac_decoder_select="imdct15 mdct sinewin"
2083 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2084 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2085 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2086 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2087 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2088 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2089 aic_decoder_select="golomb idctdsp"
2090 alac_encoder_select="lpc"
2091 als_decoder_select="bswapdsp"
2092 amrnb_decoder_select="lsp"
2093 amrwb_decoder_select="lsp"
2094 amv_decoder_select="sp5x_decoder exif"
2095 amv_encoder_select="aandcttables mpegvideoenc"
2096 ape_decoder_select="bswapdsp llauddsp"
2097 apng_decoder_select="zlib"
2098 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2099 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2100 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2101 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2102 atrac1_decoder_select="mdct sinewin"
2103 atrac3_decoder_select="mdct"
2104 atrac3p_decoder_select="mdct sinewin"
2105 avrn_decoder_select="exif"
2106 bink_decoder_select="blockdsp hpeldsp"
2107 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2108 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2109 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2110 cllc_decoder_select="bswapdsp"
2111 comfortnoise_encoder_select="lpc"
2112 cook_decoder_select="audiodsp mdct sinewin"
2113 cscd_decoder_select="lzo"
2114 cscd_decoder_suggest="zlib"
2115 dca_decoder_select="fmtconvert mdct"
2116 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2117 dnxhd_decoder_select="blockdsp idctdsp"
2118 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2119 dvvideo_decoder_select="dvprofile idctdsp"
2120 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2121 dxa_decoder_select="zlib"
2122 eac3_decoder_select="ac3_decoder"
2123 eac3_encoder_select="ac3_encoder"
2124 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2125 eatgq_decoder_select="aandcttables"
2126 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2127 exr_decoder_select="zlib"
2128 ffv1_decoder_select="golomb rangecoder"
2129 ffv1_encoder_select="rangecoder"
2130 ffvhuff_decoder_select="huffyuv_decoder"
2131 ffvhuff_encoder_select="huffyuv_encoder"
2132 fic_decoder_select="golomb"
2133 flac_decoder_select="golomb"
2134 flac_encoder_select="bswapdsp golomb lpc"
2135 flashsv_decoder_select="zlib"
2136 flashsv_encoder_select="zlib"
2137 flashsv2_encoder_select="zlib"
2138 flashsv2_decoder_select="zlib"
2139 flv_decoder_select="h263_decoder"
2140 flv_encoder_select="h263_encoder"
2141 fourxm_decoder_select="blockdsp bswapdsp"
2142 fraps_decoder_select="bswapdsp huffman"
2143 g2m_decoder_select="blockdsp idctdsp zlib"
2144 g729_decoder_select="audiodsp"
2145 h261_decoder_select="mpeg_er mpegvideo"
2146 h261_encoder_select="aandcttables mpegvideoenc"
2147 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2148 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2149 h263i_decoder_select="h263_decoder"
2150 h263p_encoder_select="h263_encoder"
2151 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2152 h264_decoder_suggest="error_resilience"
2153 h264_qsv_decoder_deps="libmfx"
2154 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2155 h264_qsv_encoder_deps="libmfx"
2156 h264_qsv_encoder_select="qsvenc"
2157 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2158 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2159 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2160 iac_decoder_select="imc_decoder"
2161 imc_decoder_select="bswapdsp fft mdct sinewin"
2162 indeo3_decoder_select="hpeldsp"
2163 interplay_video_decoder_select="hpeldsp"
2164 jpegls_decoder_select="golomb mjpeg_decoder"
2165 jpegls_encoder_select="golomb"
2166 jv_decoder_select="blockdsp"
2167 lagarith_decoder_select="huffyuvdsp"
2168 ljpeg_encoder_select="aandcttables idctdsp"
2169 loco_decoder_select="golomb"
2170 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2171 metasound_decoder_select="lsp mdct sinewin"
2172 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2173 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2174 mjpeg_encoder_select="aandcttables mpegvideoenc"
2175 mjpegb_decoder_select="mjpeg_decoder"
2176 mlp_decoder_select="mlp_parser"
2177 motionpixels_decoder_select="bswapdsp"
2178 mp1_decoder_select="mpegaudio"
2179 mp1float_decoder_select="mpegaudio"
2180 mp2_decoder_select="mpegaudio"
2181 mp2float_decoder_select="mpegaudio"
2182 mp3_decoder_select="mpegaudio"
2183 mp3adu_decoder_select="mpegaudio"
2184 mp3adufloat_decoder_select="mpegaudio"
2185 mp3float_decoder_select="mpegaudio"
2186 mp3on4_decoder_select="mpegaudio"
2187 mp3on4float_decoder_select="mpegaudio"
2188 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2189 mpc8_decoder_select="mpegaudiodsp"
2190 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2191 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2192 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2193 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2194 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2195 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2196 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2197 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2198 mpeg4_encoder_select="h263_encoder"
2199 msmpeg4v1_decoder_select="h263_decoder"
2200 msmpeg4v2_decoder_select="h263_decoder"
2201 msmpeg4v2_encoder_select="h263_encoder"
2202 msmpeg4v3_decoder_select="h263_decoder"
2203 msmpeg4v3_encoder_select="h263_encoder"
2204 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2205 mxpeg_decoder_select="mjpeg_decoder"
2206 nellymoser_decoder_select="mdct sinewin"
2207 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2208 nuv_decoder_select="idctdsp lzo"
2209 on2avc_decoder_select="mdct"
2210 opus_decoder_deps="swresample"
2211 opus_decoder_select="imdct15"
2212 png_decoder_select="zlib"
2213 png_encoder_select="huffyuvencdsp zlib"
2214 prores_decoder_select="blockdsp idctdsp"
2215 prores_encoder_select="fdctdsp"
2216 qcelp_decoder_select="lsp"
2217 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2218 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2219 ra_144_decoder_select="audiodsp"
2220 ralf_decoder_select="golomb"
2221 rawvideo_decoder_select="bswapdsp"
2222 rtjpeg_decoder_select="me_cmp"
2223 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2224 rv10_encoder_select="h263_encoder"
2225 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2226 rv20_encoder_select="h263_encoder"
2227 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2228 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2229 shorten_decoder_select="golomb"
2230 sipr_decoder_select="lsp"
2231 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2232 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2233 sonic_decoder_select="golomb rangecoder"
2234 sonic_encoder_select="golomb rangecoder"
2235 sonic_ls_encoder_select="golomb rangecoder"
2236 sp5x_decoder_select="mjpeg_decoder"
2237 svq1_decoder_select="hpeldsp"
2238 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2239 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2240 svq3_decoder_suggest="zlib"
2241 tak_decoder_select="audiodsp"
2242 tdsc_decoder_select="zlib mjpeg_decoder"
2243 theora_decoder_select="vp3_decoder"
2244 thp_decoder_select="mjpeg_decoder"
2245 tiff_decoder_suggest="zlib lzma"
2246 tiff_encoder_suggest="zlib"
2247 truehd_decoder_select="mlp_parser"
2248 truemotion2_decoder_select="bswapdsp"
2249 truespeech_decoder_select="bswapdsp"
2250 tscc_decoder_select="zlib"
2251 twinvq_decoder_select="mdct lsp sinewin"
2252 utvideo_decoder_select="bswapdsp"
2253 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2254 vble_decoder_select="huffyuvdsp"
2255 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2256 vc1image_decoder_select="vc1_decoder"
2257 vorbis_decoder_select="mdct"
2258 vorbis_encoder_select="mdct"
2259 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2260 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2261 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2262 vp6a_decoder_select="vp6_decoder"
2263 vp6f_decoder_select="vp6_decoder"
2264 vp7_decoder_select="h264pred videodsp"
2265 vp8_decoder_select="h264pred videodsp"
2266 vp9_decoder_select="videodsp vp9_parser"
2267 webp_decoder_select="vp8_decoder"
2268 wmalossless_decoder_select="llauddsp"
2269 wmapro_decoder_select="mdct sinewin wma_freqs"
2270 wmav1_decoder_select="mdct sinewin wma_freqs"
2271 wmav1_encoder_select="mdct sinewin wma_freqs"
2272 wmav2_decoder_select="mdct sinewin wma_freqs"
2273 wmav2_encoder_select="mdct sinewin wma_freqs"
2274 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2275 wmv1_decoder_select="h263_decoder"
2276 wmv1_encoder_select="h263_encoder"
2277 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2278 wmv2_encoder_select="h263_encoder"
2279 wmv3_decoder_select="vc1_decoder"
2280 wmv3image_decoder_select="wmv3_decoder"
2281 zerocodec_decoder_select="zlib"
2282 zlib_decoder_select="zlib"
2283 zlib_encoder_select="zlib"
2284 zmbv_decoder_select="zlib"
2285 zmbv_encoder_select="zlib"
2286
2287 # hardware accelerators
2288 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2289 dxva2_deps="dxva2api_h"
2290 vaapi_deps="va_va_h"
2291 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2292 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2293 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2294 xvmc_deps="X11_extensions_XvMClib_h"
2295
2296 h263_vaapi_hwaccel_deps="vaapi"
2297 h263_vaapi_hwaccel_select="h263_decoder"
2298 h263_vdpau_hwaccel_deps="vdpau"
2299 h263_vdpau_hwaccel_select="h263_decoder"
2300 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2301 h264_dxva2_hwaccel_deps="dxva2"
2302 h264_dxva2_hwaccel_select="h264_decoder"
2303 h264_qsv_hwaccel_deps="libmfx"
2304 h264_vaapi_hwaccel_deps="vaapi"
2305 h264_vaapi_hwaccel_select="h264_decoder"
2306 h264_vda_decoder_deps="vda"
2307 h264_vda_decoder_select="h264_decoder"
2308 h264_vda_hwaccel_deps="vda"
2309 h264_vda_hwaccel_select="h264_decoder"
2310 h264_vda_old_hwaccel_deps="vda"
2311 h264_vda_old_hwaccel_select="h264_decoder"
2312 h264_vdpau_decoder_deps="vdpau"
2313 h264_vdpau_decoder_select="h264_decoder"
2314 h264_vdpau_hwaccel_deps="vdpau"
2315 h264_vdpau_hwaccel_select="h264_decoder"
2316 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2317 hevc_dxva2_hwaccel_select="hevc_decoder"
2318 mpeg_vdpau_decoder_deps="vdpau"
2319 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2320 mpeg_xvmc_hwaccel_deps="xvmc"
2321 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2322 mpeg1_vdpau_decoder_deps="vdpau"
2323 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2324 mpeg1_vdpau_hwaccel_deps="vdpau"
2325 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2326 mpeg1_xvmc_hwaccel_deps="xvmc"
2327 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2328 mpeg2_crystalhd_decoder_select="crystalhd"
2329 mpeg2_dxva2_hwaccel_deps="dxva2"
2330 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2331 mpeg2_vaapi_hwaccel_deps="vaapi"
2332 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2333 mpeg2_vdpau_hwaccel_deps="vdpau"
2334 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2335 mpeg2_xvmc_hwaccel_deps="xvmc"
2336 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2337 mpeg4_crystalhd_decoder_select="crystalhd"
2338 mpeg4_vaapi_hwaccel_deps="vaapi"
2339 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2340 mpeg4_vdpau_decoder_deps="vdpau"
2341 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2342 mpeg4_vdpau_hwaccel_deps="vdpau"
2343 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2344 msmpeg4_crystalhd_decoder_select="crystalhd"
2345 vc1_crystalhd_decoder_select="crystalhd"
2346 vc1_dxva2_hwaccel_deps="dxva2"
2347 vc1_dxva2_hwaccel_select="vc1_decoder"
2348 vc1_vaapi_hwaccel_deps="vaapi"
2349 vc1_vaapi_hwaccel_select="vc1_decoder"
2350 vc1_vdpau_decoder_deps="vdpau"
2351 vc1_vdpau_decoder_select="vc1_decoder"
2352 vc1_vdpau_hwaccel_deps="vdpau"
2353 vc1_vdpau_hwaccel_select="vc1_decoder"
2354 wmv3_crystalhd_decoder_select="crystalhd"
2355 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2356 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2357 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2358 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2359
2360 # parsers
2361 h264_parser_select="h264_decoder"
2362 hevc_parser_select="hevc_decoder"
2363 mpegvideo_parser_select="mpegvideo"
2364 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2365 vc1_parser_select="mpegvideo startcode vc1_decoder"
2366
2367 # external libraries
2368 libaacplus_encoder_deps="libaacplus"
2369 libcelt_decoder_deps="libcelt"
2370 libdcadec_decoder_deps="libdcadec"
2371 libfaac_encoder_deps="libfaac"
2372 libfaac_encoder_select="audio_frame_queue"
2373 libfdk_aac_decoder_deps="libfdk_aac"
2374 libfdk_aac_encoder_deps="libfdk_aac"
2375 libfdk_aac_encoder_select="audio_frame_queue"
2376 libgme_demuxer_deps="libgme"
2377 libgsm_decoder_deps="libgsm"
2378 libgsm_encoder_deps="libgsm"
2379 libgsm_ms_decoder_deps="libgsm"
2380 libgsm_ms_encoder_deps="libgsm"
2381 libilbc_decoder_deps="libilbc"
2382 libilbc_encoder_deps="libilbc"
2383 libmodplug_demuxer_deps="libmodplug"
2384 libmp3lame_encoder_deps="libmp3lame"
2385 libmp3lame_encoder_select="audio_frame_queue"
2386 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2387 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2388 libopencore_amrnb_encoder_select="audio_frame_queue"
2389 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2390 libopenh264_encoder_deps="libopenh264"
2391 libopenjpeg_decoder_deps="libopenjpeg"
2392 libopenjpeg_encoder_deps="libopenjpeg"
2393 libopus_decoder_deps="libopus"
2394 libopus_encoder_deps="libopus"
2395 libopus_encoder_select="audio_frame_queue"
2396 libquvi_demuxer_deps="libquvi"
2397 libschroedinger_decoder_deps="libschroedinger"
2398 libschroedinger_encoder_deps="libschroedinger"
2399 libshine_encoder_deps="libshine"
2400 libshine_encoder_select="audio_frame_queue"
2401 libspeex_decoder_deps="libspeex"
2402 libspeex_encoder_deps="libspeex"
2403 libspeex_encoder_select="audio_frame_queue"
2404 libstagefright_h264_decoder_deps="libstagefright_h264"
2405 libtheora_encoder_deps="libtheora"
2406 libtwolame_encoder_deps="libtwolame"
2407 libvo_aacenc_encoder_deps="libvo_aacenc"
2408 libvo_aacenc_encoder_select="audio_frame_queue"
2409 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2410 libvorbis_decoder_deps="libvorbis"
2411 libvorbis_encoder_deps="libvorbis"
2412 libvorbis_encoder_select="audio_frame_queue"
2413 libvpx_vp8_decoder_deps="libvpx"
2414 libvpx_vp8_encoder_deps="libvpx"
2415 libvpx_vp9_decoder_deps="libvpx"
2416 libvpx_vp9_encoder_deps="libvpx"
2417 libwavpack_encoder_deps="libwavpack"
2418 libwebp_encoder_deps="libwebp"
2419 libx264_encoder_deps="libx264"
2420 libx264rgb_encoder_deps="libx264"
2421 libx264rgb_encoder_select="libx264_encoder"
2422 libx265_encoder_deps="libx265"
2423 libxavs_encoder_deps="libxavs"
2424 libxvid_encoder_deps="libxvid"
2425 libutvideo_decoder_deps="libutvideo"
2426 libutvideo_encoder_deps="libutvideo"
2427 libzvbi_teletext_decoder_deps="libzvbi"
2428 nvenc_encoder_deps="nvenc"
2429 nvenc_h265_encoder_deps="nvenc"
2430
2431 # demuxers / muxers
2432 ac3_demuxer_select="ac3_parser"
2433 asf_demuxer_select="riffdec"
2434 asf_muxer_select="riffenc"
2435 asf_stream_muxer_select="asf_muxer"
2436 avi_demuxer_select="riffdec exif"
2437 avi_muxer_select="riffenc"
2438 avisynth_demuxer_deps="avisynth"
2439 avisynth_demuxer_select="riffdec"
2440 caf_demuxer_select="riffdec"
2441 dash_muxer_select="mp4_muxer"
2442 dirac_demuxer_select="dirac_parser"
2443 dts_demuxer_select="dca_parser"
2444 dtshd_demuxer_select="dca_parser"
2445 dv_demuxer_select="dvprofile"
2446 dv_muxer_select="dvprofile"
2447 dxa_demuxer_select="riffdec"
2448 eac3_demuxer_select="ac3_parser"
2449 f4v_muxer_select="mov_muxer"
2450 flac_demuxer_select="flac_parser"
2451 hds_muxer_select="flv_muxer"
2452 hls_muxer_select="mpegts_muxer"
2453 image2_alias_pix_demuxer_select="image2_demuxer"
2454 image2_brender_pix_demuxer_select="image2_demuxer"
2455 ipod_muxer_select="mov_muxer"
2456 ismv_muxer_select="mov_muxer"
2457 libnut_demuxer_deps="libnut"
2458 libnut_muxer_deps="libnut"
2459 matroska_audio_muxer_select="matroska_muxer"
2460 matroska_demuxer_select="riffdec"
2461 matroska_demuxer_suggest="bzlib lzo zlib"
2462 matroska_muxer_select="riffenc"
2463 mmf_muxer_select="riffenc"
2464 mov_demuxer_select="riffdec"
2465 mov_demuxer_suggest="zlib"
2466 mov_muxer_select="riffenc rtpenc_chain"
2467 mp3_demuxer_select="mpegaudio_parser"
2468 mp4_muxer_select="mov_muxer"
2469 mpegts_muxer_select="adts_muxer latm_muxer"
2470 mpegtsraw_demuxer_select="mpegts_demuxer"
2471 mxf_d10_muxer_select="mxf_muxer"
2472 mxf_opatom_muxer_select="mxf_muxer"
2473 nut_muxer_select="riffenc"
2474 nuv_demuxer_select="riffdec"
2475 oga_muxer_select="ogg_muxer"
2476 ogg_demuxer_select="golomb"
2477 opus_muxer_select="ogg_muxer"
2478 psp_muxer_select="mov_muxer"
2479 rtp_demuxer_select="sdp_demuxer"
2480 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2481 rtsp_demuxer_select="http_protocol rtpdec"
2482 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2483 sap_demuxer_select="sdp_demuxer"
2484 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2485 sdp_demuxer_select="rtpdec"
2486 smoothstreaming_muxer_select="ismv_muxer"
2487 spdif_muxer_select="aac_parser"
2488 spx_muxer_select="ogg_muxer"
2489 tak_demuxer_select="tak_parser"
2490 tg2_muxer_select="mov_muxer"
2491 tgp_muxer_select="mov_muxer"
2492 vobsub_demuxer_select="mpegps_demuxer"
2493 w64_demuxer_select="wav_demuxer"
2494 w64_muxer_select="wav_muxer"
2495 wav_demuxer_select="riffdec"
2496 wav_muxer_select="riffenc"
2497 webm_muxer_select="riffenc"
2498 wtv_demuxer_select="riffdec"
2499 wtv_muxer_select="riffenc"
2500 xmv_demuxer_select="riffdec"
2501 xwma_demuxer_select="riffdec"
2502
2503 # indevs / outdevs
2504 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2505 alsa_outdev_deps="alsa_asoundlib_h"
2506 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2507 avfoundation_indev_select="avfoundation"
2508 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2509 caca_outdev_deps="libcaca"
2510 decklink_outdev_deps="decklink pthreads"
2511 decklink_outdev_extralibs="-lstdc++"
2512 decklink_indev_deps="decklink pthreads"
2513 decklink_indev_extralibs="-lstdc++"
2514 dshow_indev_deps="IBaseFilter"
2515 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2516 dv1394_indev_deps="dv1394"
2517 dv1394_indev_select="dv_demuxer"
2518 fbdev_indev_deps="linux_fb_h"
2519 fbdev_outdev_deps="linux_fb_h"
2520 gdigrab_indev_deps="CreateDIBSection"
2521 gdigrab_indev_extralibs="-lgdi32"
2522 gdigrab_indev_select="bmp_decoder"
2523 iec61883_indev_deps="libiec61883"
2524 jack_indev_deps="jack_jack_h sem_timedwait"
2525 lavfi_indev_deps="avfilter"
2526 libcdio_indev_deps="libcdio"
2527 libdc1394_indev_deps="libdc1394"
2528 libv4l2_indev_deps="libv4l2"
2529 openal_indev_deps="openal"
2530 opengl_outdev_deps="opengl"
2531 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2532 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2533 pulse_indev_deps="libpulse"
2534 pulse_outdev_deps="libpulse"
2535 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2536 qtkit_indev_select="qtkit"
2537 sdl_outdev_deps="sdl"
2538 sndio_indev_deps="sndio_h"
2539 sndio_outdev_deps="sndio_h"
2540 v4l_indev_deps="linux_videodev_h"
2541 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2542 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2543 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2544 vfwcap_indev_extralibs="-lavicap32"
2545 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2546 xv_outdev_extralibs="-lXv -lX11 -lXext"
2547 x11grab_indev_deps="x11grab"
2548 x11grab_xcb_indev_deps="libxcb"
2549
2550 # protocols
2551 bluray_protocol_deps="libbluray"
2552 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2553 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2554 ffrtmpcrypt_protocol_select="tcp_protocol"
2555 ffrtmphttp_protocol_deps="!librtmp_protocol"
2556 ffrtmphttp_protocol_select="http_protocol"
2557 ftp_protocol_select="tcp_protocol"
2558 gopher_protocol_select="network"
2559 http_protocol_select="tcp_protocol"
2560 httpproxy_protocol_select="tcp_protocol"
2561 https_protocol_select="tls_protocol"
2562 icecast_protocol_select="http_protocol"
2563 librtmp_protocol_deps="librtmp"
2564 librtmpe_protocol_deps="librtmp"
2565 librtmps_protocol_deps="librtmp"
2566 librtmpt_protocol_deps="librtmp"
2567 librtmpte_protocol_deps="librtmp"
2568 libsmbclient_protocol_deps="libsmbclient gplv3"
2569 libssh_protocol_deps="libssh"
2570 mmsh_protocol_select="http_protocol"
2571 mmst_protocol_select="network"
2572 rtmp_protocol_deps="!librtmp_protocol"
2573 rtmp_protocol_select="tcp_protocol"
2574 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2575 rtmps_protocol_deps="!librtmp_protocol"
2576 rtmps_protocol_select="tls_protocol"
2577 rtmpt_protocol_select="ffrtmphttp_protocol"
2578 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2579 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2580 rtp_protocol_select="udp_protocol"
2581 sctp_protocol_deps="struct_sctp_event_subscribe"
2582 sctp_protocol_select="network"
2583 srtp_protocol_select="rtp_protocol"
2584 tcp_protocol_select="network"
2585 tls_protocol_deps_any="openssl gnutls"
2586 tls_protocol_select="tcp_protocol"
2587 udp_protocol_select="network"
2588 udplite_protocol_select="network"
2589 unix_protocol_deps="sys_un_h"
2590 unix_protocol_select="network"
2591
2592 # filters
2593 amovie_filter_deps="avcodec avformat"
2594 aresample_filter_deps="swresample"
2595 ass_filter_deps="libass"
2596 asyncts_filter_deps="avresample"
2597 atempo_filter_deps="avcodec"
2598 atempo_filter_select="rdft"
2599 azmq_filter_deps="libzmq"
2600 blackframe_filter_deps="gpl"
2601 boxblur_filter_deps="gpl"
2602 bs2b_filter_deps="libbs2b"
2603 colormatrix_filter_deps="gpl"
2604 cropdetect_filter_deps="gpl"
2605 delogo_filter_deps="gpl"
2606 deshake_filter_select="pixelutils"
2607 drawtext_filter_deps="libfreetype"
2608 ebur128_filter_deps="gpl"
2609 eq_filter_deps="gpl"
2610 fftfilt_filter_deps="avcodec"
2611 fftfilt_filter_select="rdft"
2612 flite_filter_deps="libflite"
2613 frei0r_filter_deps="frei0r dlopen"
2614 frei0r_src_filter_deps="frei0r dlopen"
2615 fspp_filter_deps="gpl"
2616 geq_filter_deps="gpl"
2617 histeq_filter_deps="gpl"
2618 hqdn3d_filter_deps="gpl"
2619 interlace_filter_deps="gpl"
2620 kerndeint_filter_deps="gpl"
2621 ladspa_filter_deps="ladspa dlopen"
2622 mcdeint_filter_deps="avcodec gpl"
2623 movie_filter_deps="avcodec avformat"
2624 mpdecimate_filter_deps="gpl"
2625 mpdecimate_filter_select="pixelutils"
2626 mptestsrc_filter_deps="gpl"
2627 negate_filter_deps="lut_filter"
2628 perspective_filter_deps="gpl"
2629 pp7_filter_deps="gpl"
2630 ocv_filter_deps="libopencv"
2631 owdenoise_filter_deps="gpl"
2632 pan_filter_deps="swresample"
2633 phase_filter_deps="gpl"
2634 pp_filter_deps="gpl postproc"
2635 pullup_filter_deps="gpl"
2636 removelogo_filter_deps="avcodec avformat swscale"
2637 repeatfields_filter_deps="gpl"
2638 resample_filter_deps="avresample"
2639 sab_filter_deps="gpl swscale"
2640 scale_filter_deps="swscale"
2641 select_filter_select="pixelutils"
2642 smartblur_filter_deps="gpl swscale"
2643 showspectrum_filter_deps="avcodec"
2644 showspectrum_filter_select="rdft"
2645 spp_filter_deps="gpl avcodec"
2646 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2647 stereo3d_filter_deps="gpl"
2648 subtitles_filter_deps="avformat avcodec libass"
2649 super2xsai_filter_deps="gpl"
2650 tinterlace_filter_deps="gpl"
2651 vidstabdetect_filter_deps="libvidstab"
2652 vidstabtransform_filter_deps="libvidstab"
2653 pixfmts_super2xsai_test_deps="super2xsai_filter"
2654 tinterlace_merge_test_deps="tinterlace_filter"
2655 tinterlace_pad_test_deps="tinterlace_filter"
2656 uspp_filter_deps="gpl avcodec"
2657 zmq_filter_deps="libzmq"
2658 zoompan_filter_deps="swscale"
2659
2660 # examples
2661 avio_reading="avformat avcodec avutil"
2662 avcodec_example_deps="avcodec avutil"
2663 decoding_encoding_example_deps="avcodec avformat avutil"
2664 demuxing_decoding_example_deps="avcodec avformat avutil"
2665 extract_mvs_example_deps="avcodec avformat avutil"
2666 filter_audio_example_deps="avfilter avutil"
2667 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2668 filtering_video_example_deps="avfilter avcodec avformat avutil"
2669 metadata_example_deps="avformat avutil"
2670 muxing_example_deps="avcodec avformat avutil swscale"
2671 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2672 remuxing_example_deps="avcodec avformat avutil"
2673 resampling_audio_example_deps="avutil swresample"
2674 scaling_video_example_deps="avutil swscale"
2675 transcode_aac_example_deps="avcodec avformat swresample"
2676 transcoding_example_deps="avfilter avcodec avformat avutil"
2677
2678 # libraries, in linking order
2679 avcodec_deps="avutil"
2680 avdevice_deps="avformat avcodec avutil"
2681 avfilter_deps="avutil"
2682 avformat_deps="avcodec avutil"
2683 avresample_deps="avutil"
2684 postproc_deps="avutil gpl"
2685 swresample_deps="avutil"
2686 swscale_deps="avutil"
2687
2688 # programs
2689 ffmpeg_deps="avcodec avfilter avformat swresample"
2690 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2691                null_filter
2692                setpts_filter trim_filter"
2693 ffplay_deps="avcodec avformat swscale swresample sdl"
2694 ffplay_libs='$sdl_libs'
2695 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2696 ffprobe_deps="avcodec avformat"
2697 ffserver_deps="avformat fork sarestart"
2698 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2699
2700 # documentation
2701 podpages_deps="perl"
2702 manpages_deps="perl pod2man"
2703 htmlpages_deps="perl"
2704 htmlpages_deps_any="makeinfo_html texi2html"
2705 txtpages_deps="perl makeinfo"
2706 doc_deps_any="manpages htmlpages podpages txtpages"
2707
2708 # default parameters
2709
2710 logfile="config.log"
2711
2712 # installation paths
2713 prefix_default="/usr/local"
2714 bindir_default='${prefix}/bin'
2715 datadir_default='${prefix}/share/ffmpeg'
2716 docdir_default='${prefix}/share/doc/ffmpeg'
2717 incdir_default='${prefix}/include'
2718 libdir_default='${prefix}/lib'
2719 mandir_default='${prefix}/share/man'
2720
2721 # toolchain
2722 ar_default="ar"
2723 cc_default="gcc"
2724 cxx_default="g++"
2725 host_cc_default="gcc"
2726 cp_f="cp -f"
2727 doxygen_default="doxygen"
2728 install="install"
2729 ln_s="ln -s -f"
2730 nm_default="nm -g"
2731 objformat="elf"
2732 pkg_config_default=pkg-config
2733 if ranlib 2>&1 | grep -q "\-D "; then
2734     ranlib_default="ranlib -D"
2735 else
2736     ranlib_default="ranlib"
2737 fi
2738 strip_default="strip"
2739 yasmexe_default="yasm"
2740 windres_default="windres"
2741
2742 # OS
2743 target_os_default=$(tolower $(uname -s))
2744 host_os=$target_os_default
2745
2746 # machine
2747 if test "$target_os_default" = aix; then
2748     arch_default=$(uname -p)
2749     strip_default="strip -X32_64"
2750 else
2751     arch_default=$(uname -m)
2752 fi
2753 cpu="generic"
2754 intrinsics="none"
2755
2756 # configurable options
2757 enable $PROGRAM_LIST
2758 enable $DOCUMENT_LIST
2759 enable $EXAMPLE_LIST
2760 enable $(filter_out avresample $LIBRARY_LIST)
2761 enable stripping
2762
2763 enable asm
2764 enable debug
2765 enable doc
2766 enable faan faandct faanidct
2767 enable optimizations
2768 enable runtime_cpudetect
2769 enable safe_bitstream_reader
2770 enable static
2771 enable swscale_alpha
2772
2773 sws_max_filter_size_default=256
2774 set_default sws_max_filter_size
2775
2776 # Enable hwaccels by default.
2777 enable dxva2 vaapi vda vdpau xvmc
2778 enable xlib
2779
2780 # build settings
2781 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2782 LIBPREF="lib"
2783 LIBSUF=".a"
2784 FULLNAME='$(NAME)$(BUILDSUF)'
2785 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2786 SLIBPREF="lib"
2787 SLIBSUF=".so"
2788 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2789 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2790 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2791 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2792 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2793 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2794
2795 asflags_filter=echo
2796 cflags_filter=echo
2797 ldflags_filter=echo
2798
2799 AS_C='-c'
2800 AS_O='-o $@'
2801 CC_C='-c'
2802 CC_E='-E -o $@'
2803 CC_O='-o $@'
2804 CXX_C='-c'
2805 CXX_O='-o $@'
2806 LD_O='-o $@'
2807 LD_LIB='-l%'
2808 LD_PATH='-L'
2809 HOSTCC_C='-c'
2810 HOSTCC_E='-E -o $@'
2811 HOSTCC_O='-o $@'
2812 HOSTLD_O='-o $@'
2813
2814 host_libs='-lm'
2815 host_cflags_filter=echo
2816 host_ldflags_filter=echo
2817
2818 target_path='$(CURDIR)'
2819
2820 # since the object filename is not given with the -MM flag, the compiler
2821 # is only able to print the basename, and we must add the path ourselves
2822 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2823 DEPFLAGS='-MM'
2824
2825 # find source path
2826 if test -f configure; then
2827     source_path=.
2828 else
2829     source_path=$(cd $(dirname "$0"); pwd)
2830     echo "$source_path" | grep -q '[[:blank:]]' &&
2831         die "Out of tree builds are impossible with whitespace in source path."
2832     test -e "$source_path/config.h" &&
2833         die "Out of tree builds are impossible with config.h in source dir."
2834 fi
2835
2836 for v in "$@"; do
2837     r=${v#*=}
2838     l=${v%"$r"}
2839     r=$(sh_quote "$r")
2840     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2841 done
2842
2843 find_things(){
2844     thing=$1
2845     pattern=$2
2846     file=$source_path/$3
2847     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2848 }
2849
2850 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2851 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2852 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2853 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2854 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2855 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2856 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2857 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2858 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2859 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2860 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2861
2862 ALL_COMPONENTS="
2863     $BSF_LIST
2864     $DECODER_LIST
2865     $DEMUXER_LIST
2866     $ENCODER_LIST
2867     $FILTER_LIST
2868     $HWACCEL_LIST
2869     $INDEV_LIST
2870     $MUXER_LIST
2871     $OUTDEV_LIST
2872     $PARSER_LIST
2873     $PROTOCOL_LIST
2874 "
2875
2876 for n in $COMPONENT_LIST; do
2877     v=$(toupper ${n%s})_LIST
2878     eval enable \$$v
2879     eval ${n}_if_any="\$$v"
2880 done
2881
2882 enable $ARCH_EXT_LIST
2883
2884 die_unknown(){
2885     echo "Unknown option \"$1\"."
2886     echo "See $0 --help for available options."
2887     exit 1
2888 }
2889
2890 print_3_columns() {
2891     cat | tr ' ' '\n' | sort | pr -r -3 -t
2892 }
2893
2894 show_list() {
2895     suffix=_$1
2896     shift
2897     echo $* | sed s/$suffix//g | print_3_columns
2898     exit 0
2899 }
2900
2901 rand_list(){
2902     IFS=', '
2903     set -- $*
2904     unset IFS
2905     for thing; do
2906         comp=${thing%:*}
2907         prob=${thing#$comp}
2908         prob=${prob#:}
2909         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2910         echo "prob ${prob:-0.5}"
2911         printf '%s\n' $comp
2912     done
2913 }
2914
2915 do_random(){
2916     action=$1
2917     shift
2918     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2919     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2920 }
2921
2922 for opt do
2923     optval="${opt#*=}"
2924     case "$opt" in
2925         --extra-ldflags=*)
2926             add_ldflags $optval
2927         ;;
2928         --extra-ldexeflags=*)
2929             add_ldexeflags $optval
2930         ;;
2931         --extra-libs=*)
2932             add_extralibs $optval
2933         ;;
2934         --disable-devices)
2935             disable $INDEV_LIST $OUTDEV_LIST
2936         ;;
2937         --enable-debug=*)
2938             debuglevel="$optval"
2939         ;;
2940         --disable-programs)
2941             disable $PROGRAM_LIST
2942         ;;
2943         --disable-everything)
2944             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2945         ;;
2946         --disable-all)
2947             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2948             disable $LIBRARY_LIST $PROGRAM_LIST doc
2949         ;;
2950         --enable-random|--disable-random)
2951             action=${opt%%-random}
2952             do_random ${action#--} $COMPONENT_LIST
2953         ;;
2954         --enable-random=*|--disable-random=*)
2955             action=${opt%%-random=*}
2956             do_random ${action#--} $optval
2957         ;;
2958         --enable-*=*|--disable-*=*)
2959             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2960             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2961             eval list=\$$(toupper $thing)_LIST
2962             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2963             list=$(filter "$name" $list)
2964             [ "$list" = "" ] && warn "Option $opt did not match anything"
2965             $action $list
2966         ;;
2967         --enable-?*|--disable-?*)
2968             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2969             if is_in $option $COMPONENT_LIST; then
2970                 test $action = disable && action=unset
2971                 eval $action \$$(toupper ${option%s})_LIST
2972             elif is_in $option $CMDLINE_SELECT; then
2973                 $action $option
2974             else
2975                 die_unknown $opt
2976             fi
2977         ;;
2978         --list-*)
2979             NAME="${opt#--list-}"
2980             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2981             NAME=${NAME%s}
2982             eval show_list $NAME \$$(toupper $NAME)_LIST
2983         ;;
2984         --help|-h) show_help
2985         ;;
2986         --fatal-warnings) enable fatal_warnings
2987         ;;
2988         *)
2989             optname="${opt%%=*}"
2990             optname="${optname#--}"
2991             optname=$(echo "$optname" | sed 's/-/_/g')
2992             if is_in $optname $CMDLINE_SET; then
2993                 eval $optname='$optval'
2994             elif is_in $optname $CMDLINE_APPEND; then
2995                 append $optname "$optval"
2996             else
2997                 die_unknown $opt
2998             fi
2999         ;;
3000     esac
3001 done
3002
3003 disabled logging && logfile=/dev/null
3004
3005 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3006 set >> $logfile
3007
3008 test -n "$valgrind" && toolchain="valgrind-memcheck"
3009
3010 case "$toolchain" in
3011     clang-asan)
3012         cc_default="clang"
3013         add_cflags  -fsanitize=address
3014         add_ldflags -fsanitize=address
3015     ;;
3016     clang-tsan)
3017         cc_default="clang"
3018         add_cflags  -fsanitize=thread -pie
3019         add_ldflags -fsanitize=thread -pie
3020     ;;
3021     clang-usan)
3022         cc_default="clang"
3023         add_cflags  -fsanitize=undefined
3024         add_ldflags -fsanitize=undefined
3025     ;;
3026     gcc-asan)
3027         cc_default="gcc"
3028         add_cflags  -fsanitize=address
3029         add_ldflags -fsanitize=address
3030     ;;
3031     gcc-tsan)
3032         cc_default="gcc"
3033         add_cflags  -fsanitize=thread -pie -fPIC
3034         add_ldflags -fsanitize=thread -pie -fPIC
3035     ;;
3036     gcc-usan)
3037         cc_default="gcc"
3038         add_cflags  -fsanitize=undefined
3039         add_ldflags -fsanitize=undefined
3040     ;;
3041     valgrind-massif)
3042         target_exec_default=${valgrind:-"valgrind"}
3043         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"
3044     ;;
3045     valgrind-memcheck)
3046         target_exec_default=${valgrind:-"valgrind"}
3047         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3048     ;;
3049     msvc)
3050         # Check whether the current MSVC version needs the C99 converter.
3051         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3052         # support enough of C99 to build ffmpeg. Default to the new
3053         # behaviour if the regexp was unable to match anything, since this
3054         # successfully parses the version number of existing supported
3055         # versions that require the converter (MSVC 2010 and 2012).
3056         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3057         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3058             cc_default="cl"
3059         else
3060             cc_default="c99wrap cl"
3061         fi
3062         ld_default="link"
3063         nm_default="dumpbin -symbols"
3064         ar_default="lib"
3065         target_os_default="win32"
3066         # Use a relative path for TMPDIR. This makes sure all the
3067         # ffconf temp files are written with a relative path, avoiding
3068         # issues with msys/win32 path conversion for MSVC parameters
3069         # such as -Fo<file> or -out:<file>.
3070         TMPDIR=.
3071     ;;
3072     icl)
3073         cc_default="icl"
3074         ld_default="xilink"
3075         nm_default="dumpbin -symbols"
3076         ar_default="xilib"
3077         target_os_default="win32"
3078         TMPDIR=.
3079     ;;
3080     gcov)
3081         add_cflags  -fprofile-arcs -ftest-coverage
3082         add_ldflags -fprofile-arcs -ftest-coverage
3083     ;;
3084     hardened)
3085         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3086         add_cflags   -fno-strict-overflow -fstack-protector-all
3087         add_ldflags  -Wl,-z,relro -Wl,-z,now
3088     ;;
3089     ?*)
3090         die "Unknown toolchain $toolchain"
3091     ;;
3092 esac
3093
3094 test -n "$cross_prefix" && enable cross_compile
3095
3096 if enabled cross_compile; then
3097     test -n "$arch" && test -n "$target_os" ||
3098         die "Must specify target arch and OS when cross-compiling"
3099 fi
3100
3101 ar_default="${cross_prefix}${ar_default}"
3102 cc_default="${cross_prefix}${cc_default}"
3103 cxx_default="${cross_prefix}${cxx_default}"
3104 nm_default="${cross_prefix}${nm_default}"
3105 pkg_config_default="${cross_prefix}${pkg_config_default}"
3106 ranlib_default="${cross_prefix}${ranlib_default}"
3107 strip_default="${cross_prefix}${strip_default}"
3108 windres_default="${cross_prefix}${windres_default}"
3109
3110 sysinclude_default="${sysroot}/usr/include"
3111
3112 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3113     target_exec target_os yasmexe
3114 enabled cross_compile || host_cc_default=$cc
3115 set_default host_cc
3116
3117 pkg_config_fail_message=""
3118 if ! $pkg_config --version >/dev/null 2>&1; then
3119     warn "$pkg_config not found, library detection may fail."
3120     pkg_config=false
3121 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3122     pkg_config_fail_message="
3123 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3124 fi
3125
3126 if test $doxygen != $doxygen_default && \
3127   ! $doxygen --version >/dev/null 2>&1; then
3128     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3129 fi
3130
3131 exesuf() {
3132     case $1 in
3133         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3134     esac
3135 }
3136
3137 EXESUF=$(exesuf $target_os)
3138 HOSTEXESUF=$(exesuf $host_os)
3139
3140 # set temporary file name
3141 : ${TMPDIR:=$TEMPDIR}
3142 : ${TMPDIR:=$TMP}
3143 : ${TMPDIR:=/tmp}
3144
3145 if [ -n "$tempprefix" ] ; then
3146     mktemp(){
3147         echo $tempprefix.${HOSTNAME}.${UID}
3148     }
3149 elif ! check_cmd mktemp -u XXXXXX; then
3150     # simple replacement for missing mktemp
3151     # NOT SAFE FOR GENERAL USE
3152     mktemp(){
3153         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3154     }
3155 fi
3156
3157 tmpfile(){
3158     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3159         (set -C; exec > $tmp) 2>/dev/null ||
3160         die "Unable to create temporary file in $TMPDIR."
3161     append TMPFILES $tmp
3162     eval $1=$tmp
3163 }
3164
3165 trap 'rm -f -- $TMPFILES' EXIT
3166
3167 tmpfile TMPASM .asm
3168 tmpfile TMPC   .c
3169 tmpfile TMPCPP .cpp
3170 tmpfile TMPE   $EXESUF
3171 tmpfile TMPH   .h
3172 tmpfile TMPM   .m
3173 tmpfile TMPO   .o
3174 tmpfile TMPS   .S
3175 tmpfile TMPSH  .sh
3176 tmpfile TMPV   .ver
3177
3178 unset -f mktemp
3179
3180 chmod +x $TMPE
3181
3182 # make sure we can execute files in $TMPDIR
3183 cat > $TMPSH 2>> $logfile <<EOF
3184 #! /bin/sh
3185 EOF
3186 chmod +x $TMPSH >> $logfile 2>&1
3187 if ! $TMPSH >> $logfile 2>&1; then
3188     cat <<EOF
3189 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3190 variable to another directory and make sure that it is not mounted noexec.
3191 EOF
3192     die "Sanity test failed."
3193 fi
3194
3195 armasm_flags(){
3196     for flag; do
3197         case $flag in
3198             # Filter out MSVC cl.exe options from cflags that shouldn't
3199             # be passed to gas-preprocessor
3200             -M[TD]*)                                            ;;
3201             *)                  echo $flag                      ;;
3202         esac
3203    done
3204 }
3205
3206 ccc_flags(){
3207     for flag; do
3208         case $flag in
3209             -std=c99)           echo -c99                       ;;
3210             -mcpu=*)            echo -arch ${flag#*=}           ;;
3211             -mieee)             echo -ieee                      ;;
3212             -O*|-fast)          echo $flag                      ;;
3213             -fno-math-errno)    echo -assume nomath_errno       ;;
3214             -g)                 echo -g3                        ;;
3215             -Wall)              echo -msg_enable level2         ;;
3216             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3217             -Wl,*)              echo $flag                      ;;
3218             -f*|-W*)                                            ;;
3219             *)                  echo $flag                      ;;
3220         esac
3221    done
3222 }
3223
3224 cparser_flags(){
3225     for flag; do
3226         case $flag in
3227             -Wno-switch)             echo -Wno-switch-enum ;;
3228             -Wno-format-zero-length) ;;
3229             -Wdisabled-optimization) ;;
3230             -Wno-pointer-sign)       echo -Wno-other ;;
3231             *)                       echo $flag ;;
3232         esac
3233     done
3234 }
3235
3236 msvc_common_flags(){
3237     for flag; do
3238         case $flag in
3239             # In addition to specifying certain flags under the compiler
3240             # specific filters, they must be specified here as well or else the
3241             # generic catch all at the bottom will print the original flag.
3242             -Wall)                ;;
3243             -std=c99)             ;;
3244             # Common flags
3245             -fomit-frame-pointer) ;;
3246             -g)                   echo -Z7 ;;
3247             -fno-math-errno)      ;;
3248             -fno-common)          ;;
3249             -fno-signed-zeros)    ;;
3250             -fPIC)                ;;
3251             -mthumb)              ;;
3252             -march=*)             ;;
3253             -lz)                  echo zlib.lib ;;
3254             -lavifil32)           echo vfw32.lib ;;
3255             -lavicap32)           echo vfw32.lib user32.lib ;;
3256             -l*)                  echo ${flag#-l}.lib ;;
3257             -L*)                  echo -libpath:${flag#-L} ;;
3258             *)                    echo $flag ;;
3259         esac
3260     done
3261 }
3262
3263 msvc_flags(){
3264     msvc_common_flags "$@"
3265     for flag; do
3266         case $flag in
3267             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3268                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3269                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3270                                        -wd4307 \
3271                                        -wd4273 -wd4554 -wd4701 ;;
3272         esac
3273     done
3274 }
3275
3276 icl_flags(){
3277     msvc_common_flags "$@"
3278     for flag; do
3279         case $flag in
3280             # Despite what Intel's documentation says -Wall, which is supported
3281             # on Windows, does enable remarks so disable them here.
3282             -Wall)                echo $flag -Qdiag-disable:remark ;;
3283             -std=c99)             echo -Qstd=c99 ;;
3284             -flto)                echo -ipo ;;
3285         esac
3286     done
3287 }
3288
3289 icc_flags(){
3290     for flag; do
3291         case $flag in
3292             -flto)                echo -ipo ;;
3293             *)                    echo $flag ;;
3294         esac
3295     done
3296 }
3297
3298 pgi_flags(){
3299     for flag; do
3300         case $flag in
3301             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3302             -fomit-frame-pointer) echo -Mnoframe ;;
3303             -g)                   echo -gopt ;;
3304             *)                    echo $flag ;;
3305         esac
3306     done
3307 }
3308
3309 suncc_flags(){
3310     for flag; do
3311         case $flag in
3312             -march=*|-mcpu=*)
3313                 case "${flag#*=}" in
3314                     native)                   echo -xtarget=native       ;;
3315                     v9|niagara)               echo -xarch=sparc          ;;
3316                     ultrasparc)               echo -xarch=sparcvis       ;;
3317                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3318                     i586|pentium)             echo -xchip=pentium        ;;
3319                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3320                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3321                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3322                     pentium4*)          echo -xtarget=pentium4           ;;
3323                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3324                     *-sse3)             echo -xarch=sse3                 ;;
3325                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3326                     bonnell)                   echo -xarch=ssse3         ;;
3327                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3328                     westmere)                  echo -xtarget=westmere    ;;
3329                     silvermont)                echo -xarch=sse4_2        ;;
3330                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3331                     core-avx*|ivybridge|haswell|broadwell)
3332                                                echo -xarch=avx           ;;
3333                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3334                     btver1)                    echo -xarch=amdsse4a      ;;
3335                     btver2|bdver*)             echo -xarch=avx           ;;
3336                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3337                     k8|opteron|athlon64|athlon-fx)
3338                                                echo -xarch=sse2a         ;;
3339                     athlon*)                   echo -xarch=pentium_proa  ;;
3340                 esac
3341                 ;;
3342             -std=c99)             echo -xc99              ;;
3343             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3344             -fPIC)                echo -KPIC -xcode=pic32 ;;
3345             -W*,*)                echo $flag              ;;
3346             -f*-*|-W*|-mimpure-text)                      ;;
3347             -shared)              echo -G                 ;;
3348             *)                    echo $flag              ;;
3349         esac
3350     done
3351 }
3352
3353 tms470_flags(){
3354     for flag; do
3355         case $flag in
3356             -march=*|-mcpu=*)
3357                 case "${flag#*=}" in
3358                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3359                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3360                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3361                     armv6*|arm11*)          echo -mv=6   ;;
3362                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3363                                             echo -mv=5e  ;;
3364                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3365                 esac
3366                 ;;
3367             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3368             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3369             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3370             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3371             -msoft-float)   echo --float_support=vfplib       ;;
3372             -O[0-3]|-mf=*)  echo $flag                        ;;
3373             -g)             echo -g -mn                       ;;
3374             -pds=*)         echo $flag                        ;;
3375             -D*|-I*)        echo $flag                        ;;
3376             --gcc|--abi=*)  echo $flag                        ;;
3377             -me)            echo $flag                        ;;
3378         esac
3379     done
3380 }
3381
3382 probe_cc(){
3383     pfx=$1
3384     _cc=$2
3385
3386     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3387     unset _ld_o _ldflags _ld_lib _ld_path
3388     unset _depflags _DEPCMD _DEPFLAGS
3389     _flags_filter=echo
3390
3391     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3392         true # no-op to avoid reading stdin in following checks
3393     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3394         _type=llvm_gcc
3395         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3396         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3397         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3398         _cflags_speed='-O3'
3399         _cflags_size='-Os'
3400     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3401         _type=gcc
3402         gcc_version=$($_cc --version | head -n1)
3403         gcc_basever=$($_cc -dumpversion)
3404         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3405         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3406         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3407         if ! $_cc -dumpversion | grep -q '^2\.'; then
3408             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3409         fi
3410         _cflags_speed='-O3'
3411         _cflags_size='-Os'
3412     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3413         _type=icc
3414         _ident=$($_cc --version | head -n1)
3415         _depflags='-MMD'
3416         _cflags_speed='-O3'
3417         _cflags_size='-Os'
3418         _cflags_noopt='-O1'
3419         _flags_filter=icc_flags
3420     elif $_cc -v 2>&1 | grep -q xlc; then
3421         _type=xlc
3422         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3423         _cflags_speed='-O5'
3424         _cflags_size='-O5 -qcompact'
3425     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3426         _type=ccc
3427         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3428         _DEPFLAGS='-M'
3429         _cflags_speed='-fast'
3430         _cflags_size='-O1'
3431         _flags_filter=ccc_flags
3432     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3433         test -d "$sysroot" || die "No valid sysroot specified."
3434         _type=armcc
3435         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3436         armcc_conf="$PWD/armcc.conf"
3437         $_cc --arm_linux_configure                 \
3438              --arm_linux_config_file="$armcc_conf" \
3439              --configure_sysroot="$sysroot"        \
3440              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3441              die "Error creating armcc configuration file."
3442         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3443         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3444         as_default="${cross_prefix}gcc"
3445         _depflags='-MMD'
3446         _cflags_speed='-O3'
3447         _cflags_size='-Os'
3448     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3449         _type=tms470
3450         _ident=$($_cc -version | head -n1 | tr -s ' ')
3451         _flags='--gcc --abi=eabi -me'
3452         _cc_e='-ppl -fe=$@'
3453         _cc_o='-fe=$@'
3454         _depflags='-ppa -ppd=$(@:.o=.d)'
3455         _cflags_speed='-O3 -mf=5'
3456         _cflags_size='-O3 -mf=2'
3457         _flags_filter=tms470_flags
3458     elif $_cc -v 2>&1 | grep -q clang; then
3459         _type=clang
3460         _ident=$($_cc --version | head -n1)
3461         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3462         _cflags_speed='-O3'
3463         _cflags_size='-Os'
3464     elif $_cc -V 2>&1 | grep -q Sun; then
3465         _type=suncc
3466         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3467         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3468         _DEPFLAGS='-xM1 -xc99'
3469         _ldflags='-std=c99'
3470         _cflags_speed='-O5'
3471         _cflags_size='-O5 -xspace'
3472         _flags_filter=suncc_flags
3473     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3474         _type=pathscale
3475         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3476         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3477         _cflags_speed='-O2'
3478         _cflags_size='-Os'
3479         _flags_filter='filter_out -Wdisabled-optimization'
3480     elif $_cc -v 2>&1 | grep -q Open64; then
3481         _type=open64
3482         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3483         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3484         _cflags_speed='-O2'
3485         _cflags_size='-Os'
3486         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3487     elif $_cc -V 2>&1 | grep -q Portland; then
3488         _type=pgi
3489         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3490         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3491         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3492         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3493         _cflags_noopt="-O"
3494         _flags_filter=pgi_flags
3495     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3496         _type=armasm
3497         _ident=$($_cc | head -n1)
3498         # 4509: "This form of conditional instruction is deprecated"
3499         _flags="-nologo -ignore 4509"
3500         _flags_filter=armasm_flags
3501     elif $_cc 2>&1 | grep -q Intel; then
3502         _type=icl
3503         _ident=$($cc 2>&1 | head -n1)
3504         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3505         # Not only is O3 broken on 13.x+ but it is slower on all previous
3506         # versions (tested) as well.
3507         _cflags_speed="-O2"
3508         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3509         if $_cc 2>&1 | grep -q Linker; then
3510             _ld_o='-out:$@'
3511         else
3512             _ld_o='-Fe$@'
3513         fi
3514         _cc_o='-Fo$@'
3515         _cc_e='-P'
3516         _flags_filter=icl_flags
3517         _ld_lib='lib%.a'
3518         _ld_path='-libpath:'
3519         # -Qdiag-error to make icl error when seeing certain unknown arguments
3520         _flags='-nologo -Qdiag-error:4044,10157'
3521         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3522         # with MSVC which enables it by default.
3523         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3524         if [ $pfx = hostcc ]; then
3525             append _cflags -Dsnprintf=_snprintf
3526         fi
3527         disable stripping
3528     elif $_cc 2>&1 | grep -q Microsoft; then
3529         _type=msvc
3530         _ident=$($cc 2>&1 | head -n1)
3531         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3532         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3533         _cflags_speed="-O2"
3534         _cflags_size="-O1"
3535         if $_cc 2>&1 | grep -q Linker; then
3536             _ld_o='-out:$@'
3537         else
3538             _ld_o='-Fe$@'
3539         fi
3540         _cc_o='-Fo$@'
3541         _cc_e='-P -Fi$@'
3542         _flags_filter=msvc_flags
3543         _ld_lib='lib%.a'
3544         _ld_path='-libpath:'
3545         _flags='-nologo'
3546         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3547         if [ $pfx = hostcc ]; then
3548             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3549                 append _cflags -Dsnprintf=_snprintf
3550             fi
3551         fi
3552         disable stripping
3553     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3554         _type=cparser
3555         _ident=$($_cc --version | head -n1)
3556         _depflags='-MMD'
3557         _cflags_speed='-O4'
3558         _cflags_size='-O2'
3559         _flags_filter=cparser_flags
3560     fi
3561
3562     eval ${pfx}_type=\$_type
3563     eval ${pfx}_ident=\$_ident
3564 }
3565
3566 set_ccvars(){
3567     eval ${1}_C=\${_cc_c-\${${1}_C}}
3568     eval ${1}_E=\${_cc_e-\${${1}_E}}
3569     eval ${1}_O=\${_cc_o-\${${1}_O}}
3570
3571     if [ -n "$_depflags" ]; then
3572         eval ${1}_DEPFLAGS=\$_depflags
3573     else
3574         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3575         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3576         eval DEP${1}FLAGS=\$_flags
3577     fi
3578 }
3579
3580 probe_cc cc "$cc"
3581 cflags_filter=$_flags_filter
3582 cflags_speed=$_cflags_speed
3583 cflags_size=$_cflags_size
3584 cflags_noopt=$_cflags_noopt
3585 add_cflags $_flags $_cflags
3586 cc_ldflags=$_ldflags
3587 set_ccvars CC
3588
3589 probe_cc hostcc "$host_cc"
3590 host_cflags_filter=$_flags_filter
3591 add_host_cflags  $_flags $_cflags
3592 set_ccvars HOSTCC
3593
3594 test -n "$cc_type" && enable $cc_type ||
3595     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3596
3597 : ${as_default:=$cc}
3598 : ${dep_cc_default:=$cc}
3599 : ${ld_default:=$cc}
3600 : ${host_ld_default:=$host_cc}
3601 set_default ar as dep_cc ld host_ld windres
3602
3603 probe_cc as "$as"
3604 asflags_filter=$_flags_filter
3605 add_asflags $_flags $_cflags
3606 set_ccvars AS
3607
3608 probe_cc ld "$ld"
3609 ldflags_filter=$_flags_filter
3610 add_ldflags $_flags $_ldflags
3611 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3612 LD_O=${_ld_o-$LD_O}
3613 LD_LIB=${_ld_lib-$LD_LIB}
3614 LD_PATH=${_ld_path-$LD_PATH}
3615
3616 probe_cc hostld "$host_ld"
3617 host_ldflags_filter=$_flags_filter
3618 add_host_ldflags $_flags $_ldflags
3619 HOSTLD_O=${_ld_o-$HOSTLD_O}
3620
3621 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3622     probe_cc depcc "$dep_cc"
3623     CCDEP=${_DEPCMD:-$DEPCMD}
3624     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3625     DEPCCFLAGS=$_flags
3626 fi
3627
3628 if $ar 2>&1 | grep -q Microsoft; then
3629     arflags="-nologo"
3630     ar_o='-out:$@'
3631 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3632     arflags="rq"
3633     ar_o='$@'
3634 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3635     arflags='-Xany -r -c'
3636     ar_o='$@'
3637 elif $ar 2>&1 | grep -q "\[D\] "; then
3638     arflags="rcD"
3639     ar_o='$@'
3640 else
3641     arflags="rc"
3642     ar_o='$@'
3643 fi
3644
3645 add_cflags $extra_cflags
3646 add_cxxflags $extra_cxxflags
3647 add_asflags $extra_cflags
3648
3649 if test -n "$sysroot"; then
3650     case "$cc_type" in
3651         gcc|llvm_gcc|clang)
3652             add_cppflags --sysroot="$sysroot"
3653             add_ldflags --sysroot="$sysroot"
3654 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3655             add_cppflags -isysroot "$sysroot"
3656             add_ldflags -isysroot "$sysroot"
3657         ;;
3658         tms470)
3659             add_cppflags -I"$sysinclude"
3660             add_ldflags  --sysroot="$sysroot"
3661         ;;
3662     esac
3663 fi
3664
3665 if test "$cpu" = host; then
3666     enabled cross_compile &&
3667         die "--cpu=host makes no sense when cross-compiling."
3668
3669     case "$cc_type" in
3670         gcc|llvm_gcc)
3671             check_native(){
3672                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3673                 sed -n "/cc1.*$1=/{
3674                             s/.*$1=\\([^ ]*\\).*/\\1/
3675                             p
3676                             q
3677                         }" $TMPE
3678             }
3679             cpu=$(check_native -march || check_native -mcpu)
3680         ;;
3681     esac
3682
3683     test "${cpu:-host}" = host &&
3684         die "--cpu=host not supported with compiler $cc"
3685 fi
3686
3687 # Deal with common $arch aliases
3688 case "$arch" in
3689     aarch64|arm64)
3690         arch="aarch64"
3691     ;;
3692     arm*|iPad*|iPhone*)
3693         arch="arm"
3694     ;;
3695     mips*|IP*)
3696         arch="mips"
3697     ;;
3698     parisc*|hppa*)
3699         arch="parisc"
3700     ;;
3701     "Power Macintosh"|ppc*|powerpc*)
3702         arch="ppc"
3703     ;;
3704     s390|s390x)
3705         arch="s390"
3706     ;;
3707     sh4|sh)
3708         arch="sh4"
3709     ;;
3710     sun4u|sparc*)
3711         arch="sparc"
3712     ;;
3713     tilegx|tile-gx)
3714         arch="tilegx"
3715     ;;
3716     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3717         arch="x86"
3718     ;;
3719 esac
3720
3721 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3722 enable $arch
3723
3724 # Add processor-specific flags
3725 if enabled aarch64; then
3726
3727     case $cpu in
3728         armv*)
3729             cpuflags="-march=$cpu"
3730         ;;
3731         *)
3732             cpuflags="-mcpu=$cpu"
3733         ;;
3734     esac
3735
3736 elif enabled alpha; then
3737
3738     cpuflags="-mcpu=$cpu"
3739
3740 elif enabled arm; then
3741
3742     check_arm_arch() {
3743         check_cpp_condition stddef.h \
3744             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3745             $cpuflags
3746     }
3747
3748     probe_arm_arch() {
3749         if   check_arm_arch 4;        then echo armv4;
3750         elif check_arm_arch 4T;       then echo armv4t;
3751         elif check_arm_arch 5;        then echo armv5;
3752         elif check_arm_arch 5E;       then echo armv5e;
3753         elif check_arm_arch 5T;       then echo armv5t;
3754         elif check_arm_arch 5TE;      then echo armv5te;
3755         elif check_arm_arch 5TEJ;     then echo armv5te;
3756         elif check_arm_arch 6;        then echo armv6;
3757         elif check_arm_arch 6J;       then echo armv6j;
3758         elif check_arm_arch 6K;       then echo armv6k;
3759         elif check_arm_arch 6Z;       then echo armv6z;
3760         elif check_arm_arch 6ZK;      then echo armv6zk;
3761         elif check_arm_arch 6T2;      then echo armv6t2;
3762         elif check_arm_arch 7;        then echo armv7;
3763         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3764         elif check_arm_arch 7S;       then echo armv7-a;
3765         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3766         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3767         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3768         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3769         fi
3770     }
3771
3772     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3773
3774     case $cpu in
3775         armv*)
3776             cpuflags="-march=$cpu"
3777             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3778         ;;
3779         *)
3780             cpuflags="-mcpu=$cpu"
3781             case $cpu in
3782                 cortex-a*)                               subarch=armv7a  ;;
3783                 cortex-r*)                               subarch=armv7r  ;;
3784                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3785                 arm11*)                                  subarch=armv6   ;;
3786                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3787                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3788                 *)                             subarch=$(probe_arm_arch) ;;
3789             esac
3790         ;;
3791     esac
3792
3793     case "$subarch" in
3794         armv5t*)    enable fast_clz                ;;
3795         armv[6-8]*)
3796             enable fast_clz
3797             disabled fast_unaligned || enable fast_unaligned
3798             ;;
3799     esac
3800
3801 elif enabled avr32; then
3802
3803     case $cpu in
3804         ap7[02]0[0-2])
3805             subarch="avr32_ap"
3806             cpuflags="-mpart=$cpu"
3807         ;;
3808         ap)
3809             subarch="avr32_ap"
3810             cpuflags="-march=$cpu"
3811         ;;
3812         uc3[ab]*)
3813             subarch="avr32_uc"
3814             cpuflags="-mcpu=$cpu"
3815         ;;
3816         uc)
3817             subarch="avr32_uc"
3818             cpuflags="-march=$cpu"
3819         ;;
3820     esac
3821
3822 elif enabled bfin; then
3823
3824     cpuflags="-mcpu=$cpu"
3825
3826 elif enabled mips; then
3827
3828     cpuflags="-march=$cpu"
3829
3830     case $cpu in
3831         24kc)
3832             disable mipsfpu
3833             disable mipsdspr1
3834             disable mipsdspr2
3835         ;;
3836         24kf*)
3837             disable mipsdspr1
3838             disable mipsdspr2
3839         ;;
3840         24kec|34kc|1004kc)
3841             disable mipsfpu
3842             disable mipsdspr2
3843         ;;
3844         24kef*|34kf*|1004kf*)
3845             disable mipsdspr2
3846         ;;
3847         74kc)
3848             disable mipsfpu
3849         ;;
3850     esac
3851
3852 elif enabled ppc; then
3853
3854     disable ldbrx
3855     disable vsx
3856
3857     case $(tolower $cpu) in
3858         601|ppc601|powerpc601)
3859             cpuflags="-mcpu=601"
3860             disable altivec
3861         ;;
3862         603*|ppc603*|powerpc603*)
3863             cpuflags="-mcpu=603"
3864             disable altivec
3865         ;;
3866         604*|ppc604*|powerpc604*)
3867             cpuflags="-mcpu=604"
3868             disable altivec
3869         ;;
3870         g3|75*|ppc75*|powerpc75*)
3871             cpuflags="-mcpu=750"
3872             disable altivec
3873         ;;
3874         g4|745*|ppc745*|powerpc745*)
3875             cpuflags="-mcpu=7450"
3876         ;;
3877         74*|ppc74*|powerpc74*)
3878             cpuflags="-mcpu=7400"
3879         ;;
3880         g5|970|ppc970|powerpc970)
3881             cpuflags="-mcpu=970"
3882         ;;
3883         power[3-8]*)
3884             cpuflags="-mcpu=$cpu"
3885         ;;
3886         cell)
3887             cpuflags="-mcpu=cell"
3888             enable ldbrx
3889         ;;
3890         e500mc)
3891             cpuflags="-mcpu=e500mc"
3892             disable altivec
3893         ;;
3894         e500v2)
3895             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3896             disable altivec
3897             disable dcbzl
3898         ;;
3899         e500)
3900             cpuflags="-mcpu=8540 -mhard-float"
3901             disable altivec
3902             disable dcbzl
3903         ;;
3904     esac
3905
3906 elif enabled sparc; then
3907
3908     case $cpu in
3909         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3910             cpuflags="-mcpu=$cpu"
3911         ;;
3912         ultrasparc*|niagara[234])
3913             cpuflags="-mcpu=$cpu"
3914         ;;
3915     esac
3916
3917 elif enabled x86; then
3918
3919     case $cpu in
3920         i[345]86|pentium)
3921             cpuflags="-march=$cpu"
3922             disable i686
3923             disable mmx
3924         ;;
3925         # targets that do NOT support nopl and conditional mov (cmov)
3926         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3927             cpuflags="-march=$cpu"
3928             disable i686
3929         ;;
3930         # targets that do support nopl and conditional mov (cmov)
3931         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3932         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3933             cpuflags="-march=$cpu"
3934             enable i686
3935             enable fast_cmov
3936         ;;
3937         # targets that do support conditional mov but on which it's slow
3938         pentium4|pentium4m|prescott|nocona)
3939             cpuflags="-march=$cpu"
3940             enable i686
3941             disable fast_cmov
3942         ;;
3943     esac
3944
3945 fi
3946
3947 if [ "$cpu" != generic ]; then
3948     add_cflags  $cpuflags
3949     add_asflags $cpuflags
3950 fi
3951
3952 # compiler sanity check
3953 check_exec <<EOF
3954 int main(void){ return 0; }
3955 EOF
3956 if test "$?" != 0; then
3957     echo "$cc is unable to create an executable file."
3958     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3959         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3960         echo "Only do this if you know what cross compiling means."
3961     fi
3962     die "C compiler test failed."
3963 fi
3964
3965 add_cppflags -D_ISOC99_SOURCE
3966 add_cxxflags -D__STDC_CONSTANT_MACROS
3967 check_cflags -std=c99
3968 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3969 #include <stdlib.h>
3970 EOF
3971 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3972 #include <stdlib.h>
3973 EOF
3974
3975 add_host_cppflags -D_ISOC99_SOURCE
3976 check_host_cflags -std=c99
3977 check_host_cflags -Wall
3978 check_host_cflags -O3
3979
3980 check_64bit(){
3981     arch32=$1
3982     arch64=$2
3983     expr=$3
3984     check_code cc "" "int test[2*($expr) - 1]" &&
3985         subarch=$arch64 || subarch=$arch32
3986 }
3987
3988 case "$arch" in
3989     aarch64|alpha|ia64)
3990         spic=$shared
3991     ;;
3992     mips)
3993         check_64bit mips mips64 '_MIPS_SIM > 1'
3994         spic=$shared
3995     ;;
3996     parisc)
3997         check_64bit parisc parisc64 'sizeof(void *) > 4'
3998         spic=$shared
3999     ;;
4000     ppc)
4001         check_64bit ppc ppc64 'sizeof(void *) > 4'
4002         spic=$shared
4003     ;;
4004     s390)
4005         check_64bit s390 s390x 'sizeof(void *) > 4'
4006         spic=$shared
4007     ;;
4008     sparc)
4009         check_64bit sparc sparc64 'sizeof(void *) > 4'
4010         spic=$shared
4011     ;;
4012     x86)
4013         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4014         # Treat x32 as x64 for now. Note it also needs spic=$shared
4015         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4016             subarch=x86_64
4017         if test "$subarch" = "x86_64"; then
4018             spic=$shared
4019         fi
4020     ;;
4021     ppc)
4022         check_cc <<EOF && subarch="ppc64"
4023         int test[(int)sizeof(char*) - 7];
4024 EOF
4025     ;;
4026 esac
4027
4028 enable $subarch
4029 enabled spic && enable_weak pic
4030
4031 # OS specific
4032 case $target_os in
4033     aix)
4034         SHFLAGS=-shared
4035         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4036         enabled shared && add_ldflags -Wl,-brtl
4037         ;;
4038     android)
4039         disable symver
4040         enable section_data_rel_ro
4041         SLIB_INSTALL_NAME='$(SLIBNAME)'
4042         SLIB_INSTALL_LINKS=
4043         # soname not set on purpose
4044         SHFLAGS=-shared
4045         ;;
4046     haiku)
4047         prefix_default="/boot/common"
4048         network_extralibs="-lnetwork"
4049         host_libs=
4050         ;;
4051     sunos)
4052         SHFLAGS='-shared -Wl,-h,$$(@F)'
4053         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4054         network_extralibs="-lsocket -lnsl"
4055         add_cppflags -D__EXTENSIONS__
4056         # When using suncc to build, the Solaris linker will mark
4057         # an executable with each instruction set encountered by
4058         # the Solaris assembler.  As our libraries contain their own
4059         # guards for processor-specific code, instead suppress
4060         # generation of the HWCAPS ELF section on Solaris x86 only.
4061         enabled_all suncc x86 &&
4062             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4063             add_ldflags -Wl,-M,mapfile
4064         nm_default='nm -P -g'
4065         ;;
4066     netbsd)
4067         disable symver
4068         oss_indev_extralibs="-lossaudio"
4069         oss_outdev_extralibs="-lossaudio"
4070         enabled gcc || check_ldflags -Wl,-zmuldefs
4071         ;;
4072     openbsd|bitrig)
4073         disable symver
4074         SHFLAGS='-shared'
4075         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4076         SLIB_INSTALL_LINKS=
4077         oss_indev_extralibs="-lossaudio"
4078         oss_outdev_extralibs="-lossaudio"
4079         ;;
4080     dragonfly)
4081         disable symver
4082         ;;
4083     freebsd)
4084         ;;
4085     bsd/os)
4086         add_extralibs -lpoll -lgnugetopt
4087         strip="strip -d"
4088         ;;
4089     darwin)
4090         enabled ppc && add_asflags -force_cpusubtype_ALL
4091         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4092         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4093         strip="${strip} -x"
4094         add_ldflags -Wl,-dynamic,-search_paths_first
4095         SLIBSUF=".dylib"
4096         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4097         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4098         objformat="macho"
4099         enabled x86_64 && objformat="macho64"
4100         enabled_any pic shared x86_64 ||
4101             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4102         ;;
4103     mingw32*)
4104         if test $target_os = "mingw32ce"; then
4105             disable network
4106         else
4107             target_os=mingw32
4108         fi
4109         LIBTARGET=i386
4110         if enabled x86_64; then
4111             LIBTARGET="i386:x86-64"
4112         elif enabled arm; then
4113             LIBTARGET=arm-wince
4114         fi
4115         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4116         check_ldflags -Wl,--nxcompat
4117         check_ldflags -Wl,--dynamicbase
4118         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4119         shlibdir_default="$bindir_default"
4120         SLIBPREF=""
4121         SLIBSUF=".dll"
4122         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4123         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4124         dlltool="${cross_prefix}dlltool"
4125         if check_cmd lib.exe -list; then
4126             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4127             if enabled x86_64; then
4128                 LIBTARGET=x64
4129             fi
4130         elif check_cmd $dlltool --version; then
4131             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4132         fi
4133         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4134         SLIB_INSTALL_LINKS=
4135         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4136         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4137         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4138         objformat="win32"
4139         ranlib=:
4140         enable dos_paths
4141         ;;
4142     win32|win64)
4143         disable symver
4144         if enabled shared; then
4145             # Link to the import library instead of the normal static library
4146             # for shared libs.
4147             LD_LIB='%.lib'
4148             # Cannot build both shared and static libs with MSVC or icl.
4149             disable static
4150         fi
4151         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4152         shlibdir_default="$bindir_default"
4153         SLIBPREF=""
4154         SLIBSUF=".dll"
4155         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4156         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4157         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4158         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4159         SLIB_INSTALL_LINKS=
4160         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4161         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4162         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4163         objformat="win32"
4164         ranlib=:
4165         enable dos_paths
4166         ;;
4167     cygwin*)
4168         target_os=cygwin
4169         shlibdir_default="$bindir_default"
4170         SLIBPREF="cyg"
4171         SLIBSUF=".dll"
4172         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4173         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4174         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4175         SLIB_INSTALL_LINKS=
4176         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4177         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4178         objformat="win32"
4179         enable dos_paths
4180         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4181         ;;
4182     *-dos|freedos|opendos)
4183         network_extralibs="-lsocket"
4184         objformat="coff"
4185         enable dos_paths
4186         add_cppflags -U__STRICT_ANSI__
4187         ;;
4188     linux)
4189         enable dv1394
4190         enable section_data_rel_ro
4191         ;;
4192     irix*)
4193         target_os=irix
4194         ranlib="echo ignoring ranlib"
4195         ;;
4196     os/2*)
4197         strip="lxlite -CS"
4198         ln_s="cp -f"
4199         objformat="aout"
4200         add_cppflags -D_GNU_SOURCE
4201         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4202         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4203         LIBSUF="_s.a"
4204         SLIBPREF=""
4205         SLIBSUF=".dll"
4206         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4207         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4208         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4209             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4210             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4211             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4212             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4213             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4214         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4215             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4216         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4217         enable dos_paths
4218         enable_weak os2threads
4219         ;;
4220     gnu/kfreebsd)
4221         add_cppflags -D_BSD_SOURCE
4222         ;;
4223     gnu)
4224         ;;
4225     qnx)
4226         add_cppflags -D_QNX_SOURCE
4227         network_extralibs="-lsocket"
4228         ;;
4229     symbian)
4230         SLIBSUF=".dll"
4231         enable dos_paths
4232         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4233         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4234         add_ldflags -Wl,--target1-abs,--no-undefined \
4235                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4236                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4237         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4238                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4239                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4240         ;;
4241     osf1)
4242         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4243         ;;
4244     minix)
4245         ;;
4246     plan9)
4247         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4248                      -D_REENTRANT_SOURCE        \
4249                      -D_RESEARCH_SOURCE         \
4250                      -DFD_SETSIZE=96            \
4251                      -DHAVE_SOCK_OPTS
4252         add_compat strtod.o strtod=avpriv_strtod
4253         network_extralibs='-lbsd'
4254         exeobjs=compat/plan9/main.o
4255         disable ffserver
4256         cp_f='cp'
4257         ;;
4258     none)
4259         ;;
4260     *)
4261         die "Unknown OS '$target_os'."
4262         ;;
4263 esac
4264
4265 # determine libc flavour
4266
4267 probe_libc(){
4268     pfx=$1
4269     pfx_no_=${pfx%_}
4270     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4271     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4272         eval ${pfx}libc_type=uclibc
4273         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4274     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4275         eval ${pfx}libc_type=glibc
4276         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4277     # MinGW headers can be installed on Cygwin, so check for newlib first.
4278     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4279         eval ${pfx}libc_type=newlib
4280         add_${pfx}cppflags -U__STRICT_ANSI__
4281     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4282     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4283         eval ${pfx}libc_type=mingw64
4284         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4285             add_compat msvcrt/snprintf.o
4286             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4287         fi
4288         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4289         eval test \$${pfx_no_}cc_type = "gcc" &&
4290             add_${pfx}cppflags -D__printf__=__gnu_printf__
4291     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4292          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4293         eval ${pfx}libc_type=mingw32
4294         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4295             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4296             die "ERROR: MinGW32 runtime version must be >= 3.15."
4297         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4298         eval test \$${pfx_no_}cc_type = "gcc" &&
4299             add_${pfx}cppflags -D__printf__=__gnu_printf__
4300     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4301         eval ${pfx}libc_type=msvcrt
4302         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4303         # 0x601 by default unless something else is set by the user.
4304         # This can easily lead to us detecting functions only present
4305         # in such new versions and producing binaries requiring windows 7.0.
4306         # Therefore explicitly set the default to XP unless the user has
4307         # set something else on the command line.
4308         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4309             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4310     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4311         eval ${pfx}libc_type=klibc
4312     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4313         eval ${pfx}libc_type=bionic
4314     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4315         eval ${pfx}libc_type=solaris
4316         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4317     fi
4318     check_${pfx}cc <<EOF
4319 #include <time.h>
4320 void *v = localtime_r;
4321 EOF
4322 test "$?" != 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
4323 #include <time.h>
4324 void *v = localtime_r;
4325 EOF
4326
4327 }
4328
4329 probe_libc
4330 test -n "$libc_type" && enable libc_$libc_type
4331 probe_libc host_
4332 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4333
4334 case $libc_type in
4335     bionic)
4336         add_compat strtod.o strtod=avpriv_strtod
4337         ;;
4338     msvcrt)
4339         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4340             add_compat strtod.o strtod=avpriv_strtod
4341             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4342                                          _snprintf=avpriv_snprintf  \
4343                                          vsnprintf=avpriv_vsnprintf
4344         fi
4345         ;;
4346 esac
4347
4348 # hacks for compiler/libc/os combinations
4349
4350 if enabled_all tms470 libc_glibc; then
4351     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4352     add_cppflags -D__USER_LABEL_PREFIX__=
4353     add_cppflags -D__builtin_memset=memset
4354     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4355     add_cflags   -pds=48    # incompatible redefinition of macro
4356 fi
4357
4358 if enabled_all ccc libc_glibc; then
4359     add_ldflags -Wl,-z,now  # calls to libots crash without this
4360 fi
4361
4362 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4363     add_cppflags '-I\$(SRC_PATH)/compat/float'
4364
4365 esc(){
4366     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4367 }
4368
4369 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4370
4371 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4372
4373 set_default libdir
4374 : ${shlibdir_default:="$libdir"}
4375
4376 set_default $PATHS_LIST
4377 set_default nm
4378
4379 # we need to build at least one lib type
4380 if ! enabled_any static shared; then
4381     cat <<EOF
4382 At least one library type must be built.
4383 Specify --enable-static to build the static libraries or --enable-shared to
4384 build the shared libraries as well. To only build the shared libraries specify
4385 --disable-static in addition to --enable-shared.
4386 EOF
4387     exit 1;
4388 fi
4389
4390 die_license_disabled() {
4391     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4392 }
4393
4394 die_license_disabled_gpl() {
4395     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4396 }
4397
4398 die_license_disabled gpl frei0r
4399 die_license_disabled gpl libcdio
4400 die_license_disabled gpl libsmbclient
4401 die_license_disabled gpl libutvideo
4402 die_license_disabled gpl libvidstab
4403 die_license_disabled gpl libx264
4404 die_license_disabled gpl libx265
4405 die_license_disabled gpl libxavs
4406 die_license_disabled gpl libxvid
4407 die_license_disabled gpl libzvbi
4408 die_license_disabled gpl x11grab
4409
4410 die_license_disabled nonfree libaacplus
4411 die_license_disabled nonfree libfaac
4412 die_license_disabled nonfree nvenc
4413 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4414 enabled gpl && die_license_disabled_gpl nonfree openssl
4415
4416 die_license_disabled version3 libopencore_amrnb
4417 die_license_disabled version3 libopencore_amrwb
4418 die_license_disabled version3 libsmbclient
4419 die_license_disabled version3 libvo_aacenc
4420 die_license_disabled version3 libvo_amrwbenc
4421
4422 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4423
4424 disabled optimizations || check_cflags -fomit-frame-pointer
4425
4426 enable_weak_pic() {
4427     disabled pic && return
4428     enable pic
4429     add_cppflags -DPIC
4430     case "$target_os" in
4431     mingw*|cygwin*)
4432         ;;
4433     *)
4434         add_cflags -fPIC
4435         ;;
4436     esac
4437     add_asflags  -fPIC
4438 }
4439
4440 enabled pic && enable_weak_pic
4441
4442 check_cc <<EOF || die "Symbol mangling check failed."
4443 int ff_extern;
4444 EOF
4445 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4446 extern_prefix=${sym%%ff_extern*}
4447
4448 check_cc <<EOF && enable_weak inline_asm
4449 void foo(void) { __asm__ volatile ("" ::); }
4450 EOF
4451
4452 _restrict=
4453 for restrict_keyword in restrict __restrict__ __restrict; do
4454     check_cc <<EOF && _restrict=$restrict_keyword && break
4455 void foo(char * $restrict_keyword p);
4456 EOF
4457 done
4458
4459 check_cc <<EOF && enable pragma_deprecated
4460 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4461 EOF
4462
4463 check_cc <<EOF && enable attribute_packed
4464 struct { int x; } __attribute__((packed)) x;
4465 EOF
4466
4467 check_cc <<EOF && enable attribute_may_alias
4468 union { int x; } __attribute__((may_alias)) x;
4469 EOF
4470
4471 check_cc <<EOF || die "endian test failed"
4472 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4473 EOF
4474 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4475
4476 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4477     if ! enabled bigendian && enabled altivec ;then
4478         enable vsx
4479     fi
4480 fi
4481
4482 check_gas() {
4483     log "check_gas using '$as' as AS"
4484     # :vararg is used on aarch64, arm and ppc altivec
4485     check_as <<EOF || return 1
4486 .macro m n, y:vararg=0
4487 \n: .int \y
4488 .endm
4489 m x
4490 EOF
4491     # .altmacro is only used in arm asm
4492     ! enabled arm || check_as <<EOF || return 1
4493 .altmacro
4494 EOF
4495     enable gnu_as
4496     return 0
4497 }
4498
4499 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4500     nogas=:
4501     enabled_any arm aarch64 && nogas=die
4502     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4503     as_noop=-v
4504
4505     case $as_type in
4506         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4507         gcc)  gaspp_as_type=gas ;;
4508         *)    gaspp_as_type=$as_type ;;
4509     esac
4510
4511     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4512
4513     test "${as#*gas-preprocessor.pl}" != "$as" ||
4514     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4515         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4516
4517     if ! check_gas ; then
4518         as=${gas:=$as}
4519         check_gas || \
4520             $nogas "GNU assembler not found, install/update gas-preprocessor"
4521     fi
4522
4523     check_as <<EOF && enable as_func
4524 .func test
4525 .endfunc
4526 EOF
4527 fi
4528
4529 check_inline_asm inline_asm_labels '"1:\n"'
4530
4531 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4532
4533 if enabled aarch64; then
4534     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4535     # internal assembler in clang 3.3 does not support this instruction
4536     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4537     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4538
4539     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4540
4541 elif enabled alpha; then
4542
4543     check_cflags -mieee
4544
4545 elif enabled arm; then
4546
4547     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4548 float func(float a, float b){ return a+b; }
4549 EOF
4550
4551     enabled thumb && check_cflags -mthumb || check_cflags -marm
4552
4553     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4554         enable vfp_args
4555     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4556         case "${cross_prefix:-$cc}" in
4557             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4558             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4559 __asm__ (".eabi_attribute 28, 1");
4560 int main(void) { return 0; }
4561 EOF
4562         esac
4563         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4564     fi
4565
4566     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4567     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4568     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4569     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4570     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4571     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4572     enabled setend  && check_insn setend  'setend be'
4573
4574     [ $target_os = linux ] || [ $target_os = android ] ||
4575         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4576             $ARCH_EXT_LIST_ARM
4577
4578     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4579
4580     check_as <<EOF && enable as_dn_directive
4581 ra .dn d0.i16
4582 .unreq ra
4583 EOF
4584
4585     # llvm's integrated assembler supports .object_arch from llvm 3.5
4586     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4587 .object_arch armv4
4588 EOF
4589
4590     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4591
4592 elif enabled mips; then
4593
4594     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4595
4596     # Enable minimum ISA based on selected options
4597     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4598         add_cflags "-mips64r2"
4599         add_asflags "-mips64r2"
4600     elif enabled mips64 && enabled mipsfpu; then
4601         add_cflags "-mips64"
4602         add_asflags "-mips64"
4603     elif enabled mipsfpu || enabled mipsdspr1 || enabled mipsdspr2; then
4604         add_cflags "-mips32r2"
4605         add_asflags "-mips32r2"
4606     fi
4607
4608     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4609      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4610     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4611      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4612     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4613      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4614
4615 elif enabled parisc; then
4616
4617     if enabled gcc; then
4618         case $($cc -dumpversion) in
4619             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4620         esac
4621     fi
4622
4623 elif enabled ppc; then
4624
4625     enable local_aligned_8 local_aligned_16 local_aligned_32
4626
4627     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4628     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4629     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4630     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4631
4632     # AltiVec flags: The FSF version of GCC differs from the Apple version
4633     if enabled altivec; then
4634         check_cflags -maltivec -mabi=altivec &&
4635         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4636         check_cflags -faltivec
4637
4638         # check if our compiler supports Motorola AltiVec C API
4639         check_cc <<EOF || disable altivec
4640 $inc_altivec_h
4641 int main(void) {
4642     vector signed int v1 = (vector signed int) { 0 };
4643     vector signed int v2 = (vector signed int) { 1 };
4644     v1 = vec_add(v1, v2);
4645     return 0;
4646 }
4647 EOF
4648
4649         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4650     fi
4651
4652     if enabled vsx; then
4653         check_cflags -mvsx
4654     fi
4655 elif enabled x86; then
4656
4657     check_builtin rdtsc    intrin.h   "__rdtsc()"
4658     check_builtin mm_empty mmintrin.h "_mm_empty()"
4659
4660     enable local_aligned_8 local_aligned_16 local_aligned_32
4661
4662     # check whether EBP is available on x86
4663     # As 'i' is stored on the stack, this program will crash
4664     # if the base pointer is used to access it because the
4665     # base pointer is cleared in the inline assembly code.
4666     check_exec_crash <<EOF && enable ebp_available
4667 volatile int i=0;
4668 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4669 return i;
4670 EOF
4671
4672     # check whether EBX is available on x86
4673     check_inline_asm ebx_available '""::"b"(0)' &&
4674         check_inline_asm ebx_available '"":::"%ebx"'
4675
4676     # check whether xmm clobbers are supported
4677     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4678
4679     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4680         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4681
4682     # check whether binutils is new enough to compile SSSE3/MMXEXT
4683     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4684     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4685
4686     if ! disabled_any asm mmx yasm; then
4687         if check_cmd $yasmexe --version; then
4688             enabled x86_64 && yasm_extra="-m amd64"
4689             yasm_debug="-g dwarf2"
4690         elif check_cmd nasm -v; then
4691             yasmexe=nasm
4692             yasm_debug="-g -F dwarf"
4693             if enabled x86_64; then
4694                 case "$objformat" in
4695                     elf)   objformat=elf64 ;;
4696                     win32) objformat=win64 ;;
4697                 esac
4698             fi
4699         fi
4700
4701         YASMFLAGS="-f $objformat $yasm_extra"
4702         enabled pic               && append YASMFLAGS "-DPIC"
4703         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4704         case "$objformat" in
4705             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4706         esac
4707
4708         check_yasm "movbe ecx, [5]" && enable yasm ||
4709             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4710         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4711         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4712         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4713         check_yasm "CPU amdnop" || disable cpunop
4714     fi
4715
4716     case "$cpu" in
4717         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4718             disable fast_clz
4719         ;;
4720     esac
4721
4722 fi
4723
4724 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4725
4726 check_ldflags -Wl,--as-needed
4727 check_ldflags -Wl,-z,noexecstack
4728
4729 if check_func dlopen; then
4730     ldl=
4731 elif check_func dlopen -ldl; then
4732     ldl=-ldl
4733 fi
4734
4735 frei0r_filter_extralibs='$ldl'
4736 frei0r_src_filter_extralibs='$ldl'
4737 ladspa_filter_extralibs='$ldl'
4738 nvenc_encoder_extralibs='$ldl'
4739
4740 if ! disabled network; then
4741     check_func getaddrinfo $network_extralibs
4742     check_func getservbyport $network_extralibs
4743     check_func inet_aton $network_extralibs
4744
4745     check_type netdb.h "struct addrinfo"
4746     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4747     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4748     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4749     check_type poll.h "struct pollfd"
4750     check_type netinet/sctp.h "struct sctp_event_subscribe"
4751     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4752     check_type netinet/in.h "struct sockaddr_in6"
4753     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4754     check_type "sys/types.h sys/socket.h" socklen_t
4755
4756     # Prefer arpa/inet.h over winsock2
4757     if check_header arpa/inet.h ; then
4758         check_func closesocket
4759     elif check_header winsock2.h ; then
4760         check_func_headers winsock2.h closesocket -lws2 &&
4761             network_extralibs="-lws2" ||
4762         { check_func_headers winsock2.h closesocket -lws2_32 &&
4763             network_extralibs="-lws2_32"; } || disable winsock2_h network
4764         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4765
4766         check_type ws2tcpip.h socklen_t
4767         check_type ws2tcpip.h "struct addrinfo"
4768         check_type ws2tcpip.h "struct group_source_req"
4769         check_type ws2tcpip.h "struct ip_mreq_source"
4770         check_type ws2tcpip.h "struct ipv6_mreq"
4771         check_type winsock2.h "struct pollfd"
4772         check_struct winsock2.h "struct sockaddr" sa_len
4773         check_type ws2tcpip.h "struct sockaddr_in6"
4774         check_type ws2tcpip.h "struct sockaddr_storage"
4775     else
4776         disable network
4777     fi
4778 fi
4779
4780 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4781 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4782 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4783 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4784 check_builtin sarestart signal.h "SA_RESTART"
4785 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4786
4787 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4788 check_func  ${malloc_prefix}memalign            && enable memalign
4789 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4790
4791 check_func  access
4792 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4793 check_func  fcntl
4794 check_func  fork
4795 check_func  gethrtime
4796 check_func  getopt
4797 check_func  getrusage
4798 check_func  gettimeofday
4799 check_func  gmtime_r
4800 check_func  isatty
4801 check_func  localtime_r
4802 check_func  mach_absolute_time
4803 check_func  mkstemp
4804 check_func  mmap
4805 check_func  mprotect
4806 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4807 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4808 check_func  sched_getaffinity
4809 check_func  setrlimit
4810 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4811 check_func  strerror_r
4812 check_func  sysconf
4813 check_func  sysctl
4814 check_func  usleep
4815
4816 check_func_headers conio.h kbhit
4817 check_func_headers io.h setmode
4818 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4819 check_func_headers stdlib.h getenv
4820
4821 check_func_headers windows.h CoTaskMemFree -lole32
4822 check_func_headers windows.h GetProcessAffinityMask
4823 check_func_headers windows.h GetProcessTimes
4824 check_func_headers windows.h GetSystemTimeAsFileTime
4825 check_func_headers windows.h MapViewOfFile
4826 check_func_headers windows.h PeekNamedPipe
4827 check_func_headers windows.h SetConsoleTextAttribute
4828 check_func_headers windows.h Sleep
4829 check_func_headers windows.h VirtualAlloc
4830 check_struct windows.h "CONDITION_VARIABLE" Ptr
4831 check_func_headers glob.h glob
4832 enabled xlib &&
4833     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4834
4835 check_header direct.h
4836 check_header dlfcn.h
4837 check_header dxva.h
4838 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4839 check_header io.h
4840 check_header libcrystalhd/libcrystalhd_if.h
4841 check_header mach/mach_time.h
4842 check_header malloc.h
4843 check_header net/udplite.h
4844 check_header poll.h
4845 check_header sys/mman.h
4846 check_header sys/param.h
4847 check_header sys/resource.h
4848 check_header sys/select.h
4849 check_header sys/time.h
4850 check_header sys/un.h
4851 check_header termios.h
4852 check_header unistd.h
4853 check_header vdpau/vdpau.h
4854 check_header vdpau/vdpau_x11.h
4855 check_header VideoDecodeAcceleration/VDADecoder.h
4856 check_header windows.h
4857 check_header X11/extensions/XvMClib.h
4858 check_header asm/types.h
4859
4860 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4861 check_lib2 "windows.h&n