Merge commit '85b3b1c4ba7af9c2658442b0aafd27d613e1854b'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-libfaac         enable AAC encoding via libfaac [no]
214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
218   --enable-libgme          enable Game Music Emu via libgme [no]
219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
222   --enable-libmfx          enable HW acceleration through libmfx
223   --enable-libmodplug      enable ModPlug via libmodplug [no]
224   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
225   --enable-libnut          enable NUT (de)muxing via libnut,
226                            native (de)muxer exists [no]
227   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
228   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
229   --enable-libopencv       enable video filtering via libopencv [no]
230   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
231   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
232   --enable-libopus         enable Opus de/encoding via libopus [no]
233   --enable-libpulse        enable Pulseaudio input via libpulse [no]
234   --enable-libquvi         enable quvi input via libquvi [no]
235   --enable-librtmp         enable RTMP[E] support via librtmp [no]
236   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
237   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
238   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
239   --enable-libsoxr         enable Include libsoxr resampling [no]
240   --enable-libspeex        enable Speex de/encoding via libspeex [no]
241   --enable-libssh          enable SFTP protocol via libssh [no]
242   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
243   --enable-libtheora       enable Theora encoding via libtheora [no]
244   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
245   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
246   --enable-libv4l2         enable libv4l2/v4l-utils [no]
247   --enable-libvidstab      enable video stabilization using vid.stab [no]
248   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
249   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
250   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
251                            native implementation exists [no]
252   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
253   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
254   --enable-libwebp         enable WebP encoding via libwebp [no]
255   --enable-libx264         enable H.264 encoding via x264 [no]
256   --enable-libx265         enable HEVC encoding via x265 [no]
257   --enable-libxavs         enable AVS encoding via xavs [no]
258   --enable-libxcb          enable X11 grabbing using XCB [auto]
259   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
260   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
261   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
262   --enable-libxvid         enable Xvid encoding via xvidcore,
263                            native MPEG-4/Xvid encoder exists [no]
264   --enable-libzmq          enable message passing via libzmq [no]
265   --enable-libzvbi         enable teletext support via libzvbi [no]
266   --disable-lzma           disable lzma [autodetect]
267   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
268   --enable-nvenc           enable NVIDIA NVENC support [no]
269   --enable-openal          enable OpenAL 1.1 capture support [no]
270   --enable-opencl          enable OpenCL code
271   --enable-opengl          enable OpenGL rendering [no]
272   --enable-openssl         enable openssl, needed for https support
273                            if gnutls is not used [no]
274   --disable-sdl            disable sdl [autodetect]
275   --enable-x11grab         enable X11 grabbing (legacy) [no]
276   --disable-xlib           disable xlib [autodetect]
277   --disable-zlib           disable zlib [autodetect]
278
279 Toolchain options:
280   --arch=ARCH              select architecture [$arch]
281   --cpu=CPU                select the minimum required CPU (affects
282                            instruction selection, may crash on older CPUs)
283   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
284   --progs-suffix=SUFFIX    program name suffix []
285   --enable-cross-compile   assume a cross-compiler is used
286   --sysroot=PATH           root of cross-build tree
287   --sysinclude=PATH        location of cross-build system headers
288   --target-os=OS           compiler targets OS [$target_os]
289   --target-exec=CMD        command to run executables on target
290   --target-path=DIR        path to view of build directory on target
291   --target-samples=DIR     path to samples directory on target
292   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
293   --toolchain=NAME         set tool defaults according to NAME
294   --nm=NM                  use nm tool NM [$nm_default]
295   --ar=AR                  use archive tool AR [$ar_default]
296   --as=AS                  use assembler AS [$as_default]
297   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
298   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
299   --cc=CC                  use C compiler CC [$cc_default]
300   --cxx=CXX                use C compiler CXX [$cxx_default]
301   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
302   --ld=LD                  use linker LD [$ld_default]
303   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
304   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
305   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
306   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
307   --host-cc=HOSTCC         use host C compiler HOSTCC
308   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
309   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
310   --host-ld=HOSTLD         use host linker HOSTLD
311   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
312   --host-libs=HLIBS        use libs HLIBS when linking for host
313   --host-os=OS             compiler host OS [$target_os]
314   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
315   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
316   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
317   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
318   --extra-libs=ELIBS       add ELIBS [$ELIBS]
319   --extra-version=STRING   version string suffix []
320   --optflags=OPTFLAGS      override optimization-related compiler flags
321   --build-suffix=SUFFIX    library name suffix []
322   --enable-pic             build position-independent code
323   --enable-thumb           compile for Thumb instruction set
324   --enable-lto             use link-time optimization
325
326 Advanced options (experts only):
327   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
328   --disable-symver         disable symbol versioning
329   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
330   --disable-safe-bitstream-reader
331                            disable buffer boundary checking in bitreaders
332                            (faster, but may crash)
333   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
334   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
335
336 Optimization options (experts only):
337   --disable-asm            disable all assembly optimizations
338   --disable-altivec        disable AltiVec optimizations
339   --disable-amd3dnow       disable 3DNow! optimizations
340   --disable-amd3dnowext    disable 3DNow! extended optimizations
341   --disable-mmx            disable MMX optimizations
342   --disable-mmxext         disable MMXEXT optimizations
343   --disable-sse            disable SSE optimizations
344   --disable-sse2           disable SSE2 optimizations
345   --disable-sse3           disable SSE3 optimizations
346   --disable-ssse3          disable SSSE3 optimizations
347   --disable-sse4           disable SSE4 optimizations
348   --disable-sse42          disable SSE4.2 optimizations
349   --disable-avx            disable AVX optimizations
350   --disable-xop            disable XOP optimizations
351   --disable-fma3           disable FMA3 optimizations
352   --disable-fma4           disable FMA4 optimizations
353   --disable-avx2           disable AVX2 optimizations
354   --disable-armv5te        disable armv5te optimizations
355   --disable-armv6          disable armv6 optimizations
356   --disable-armv6t2        disable armv6t2 optimizations
357   --disable-vfp            disable VFP optimizations
358   --disable-neon           disable NEON optimizations
359   --disable-inline-asm     disable use of inline assembly
360   --disable-yasm           disable use of nasm/yasm assembly
361   --disable-mips32r2       disable MIPS32R2 optimizations
362   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
363   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
364   --disable-mipsfpu        disable floating point MIPS optimizations
365   --disable-fast-unaligned consider unaligned accesses slow
366
367 Developer options (useful when working on FFmpeg itself):
368   --disable-debug          disable debugging symbols
369   --enable-debug=LEVEL     set the debug level [$debuglevel]
370   --disable-optimizations  disable compiler optimizations
371   --enable-extra-warnings  enable more compiler warnings
372   --disable-stripping      disable stripping of executables and shared libraries
373   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
374                            2 causes a slowdown at runtime.
375   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
376   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
377                            leaks and errors, using the specified valgrind binary.
378                            Cannot be combined with --target-exec
379   --enable-ftrapv          Trap arithmetic overflows
380   --samples=PATH           location of test samples for FATE, if not set use
381                            \$FATE_SAMPLES at make invocation time.
382   --enable-neon-clobber-test check NEON registers for clobbering (should be
383                            used only for debugging purposes)
384   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
385                            should be used only for debugging purposes)
386   --enable-random          randomly enable/disable components
387   --disable-random
388   --enable-random=LIST     randomly enable/disable specific components or
389   --disable-random=LIST    component groups. LIST is a comma-separated list
390                            of NAME[:PROB] entries where NAME is a component
391                            (group) and PROB the probability associated with
392                            NAME (default 0.5).
393   --random-seed=VALUE      seed value for --enable/disable-random
394
395 NOTE: Object files are built at the place where configure is launched.
396 EOF
397   exit 0
398 }
399
400 quotes='""'
401
402 log(){
403     echo "$@" >> $logfile
404 }
405
406 log_file(){
407     log BEGIN $1
408     pr -n -t $1 >> $logfile
409     log END $1
410 }
411
412 echolog(){
413     log "$@"
414     echo "$@"
415 }
416
417 warn(){
418     log "WARNING: $*"
419     WARNINGS="${WARNINGS}WARNING: $*\n"
420 }
421
422 die(){
423     echolog "$@"
424     cat <<EOF
425
426 If you think configure made a mistake, make sure you are using the latest
427 version from Git.  If the latest version fails, report the problem to the
428 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
429 EOF
430     if disabled logging; then
431         cat <<EOF
432 Rerun configure with logging enabled (do not use --disable-logging), and
433 include the log this produces with your report.
434 EOF
435     else
436         cat <<EOF
437 Include the log file "$logfile" produced by configure as this will help
438 solve the problem.
439 EOF
440     fi
441     exit 1
442 }
443
444 # Avoid locale weirdness, besides we really just want to translate ASCII.
445 toupper(){
446     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
447 }
448
449 tolower(){
450     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
451 }
452
453 c_escape(){
454     echo "$*" | sed 's/["\\]/\\\0/g'
455 }
456
457 sh_quote(){
458     v=$(echo "$1" | sed "s/'/'\\\\''/g")
459     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
460     echo "$v"
461 }
462
463 cleanws(){
464     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
465 }
466
467 filter(){
468     pat=$1
469     shift
470     for v; do
471         eval "case $v in $pat) echo $v ;; esac"
472     done
473 }
474
475 filter_out(){
476     pat=$1
477     shift
478     for v; do
479         eval "case $v in $pat) ;; *) echo $v ;; esac"
480     done
481 }
482
483 map(){
484     m=$1
485     shift
486     for v; do eval $m; done
487 }
488
489 add_suffix(){
490     suffix=$1
491     shift
492     for v; do echo ${v}${suffix}; done
493 }
494
495 set_all(){
496     value=$1
497     shift
498     for var in $*; do
499         eval $var=$value
500     done
501 }
502
503 set_weak(){
504     value=$1
505     shift
506     for var; do
507         eval : \${$var:=$value}
508     done
509 }
510
511 sanitize_var_name(){
512     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
513 }
514
515 set_safe(){
516     var=$1
517     shift
518     eval $(sanitize_var_name "$var")='$*'
519 }
520
521 get_safe(){
522     eval echo \$$(sanitize_var_name "$1")
523 }
524
525 pushvar(){
526     for pvar in $*; do
527         eval level=\${${pvar}_level:=0}
528         eval ${pvar}_${level}="\$$pvar"
529         eval ${pvar}_level=$(($level+1))
530     done
531 }
532
533 popvar(){
534     for pvar in $*; do
535         eval level=\${${pvar}_level:-0}
536         test $level = 0 && continue
537         eval level=$(($level-1))
538         eval $pvar="\${${pvar}_${level}}"
539         eval ${pvar}_level=$level
540         eval unset ${pvar}_${level}
541     done
542 }
543
544 enable(){
545     set_all yes $*
546 }
547
548 disable(){
549     set_all no $*
550 }
551
552 enable_weak(){
553     set_weak yes $*
554 }
555
556 disable_weak(){
557     set_weak no $*
558 }
559
560 enable_safe(){
561     for var; do
562         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
563     done
564 }
565
566 disable_safe(){
567     for var; do
568         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
569     done
570 }
571
572 do_enable_deep(){
573     for var; do
574         enabled $var && continue
575         eval sel="\$${var}_select"
576         eval sgs="\$${var}_suggest"
577         pushvar var sgs
578         enable_deep $sel
579         popvar sgs
580         enable_deep_weak $sgs
581         popvar var
582     done
583 }
584
585 enable_deep(){
586     do_enable_deep $*
587     enable $*
588 }
589
590 enable_deep_weak(){
591     for var; do
592         disabled $var && continue
593         pushvar var
594         do_enable_deep $var
595         popvar var
596         enable_weak $var
597     done
598 }
599
600 enabled(){
601     test "${1#!}" = "$1" && op== || op=!=
602     eval test "x\$${1#!}" $op "xyes"
603 }
604
605 disabled(){
606     test "${1#!}" = "$1" && op== || op=!=
607     eval test "x\$${1#!}" $op "xno"
608 }
609
610 enabled_all(){
611     for opt; do
612         enabled $opt || return 1
613     done
614 }
615
616 disabled_all(){
617     for opt; do
618         disabled $opt || return 1
619     done
620 }
621
622 enabled_any(){
623     for opt; do
624         enabled $opt && return 0
625     done
626 }
627
628 disabled_any(){
629     for opt; do
630         disabled $opt && return 0
631     done
632     return 1
633 }
634
635 set_default(){
636     for opt; do
637         eval : \${$opt:=\$${opt}_default}
638     done
639 }
640
641 is_in(){
642     value=$1
643     shift
644     for var in $*; do
645         [ $var = $value ] && return 0
646     done
647     return 1
648 }
649
650 do_check_deps(){
651     for cfg; do
652         cfg="${cfg#!}"
653         enabled ${cfg}_checking && die "Circular dependency for $cfg."
654         disabled ${cfg}_checking && continue
655         enable ${cfg}_checking
656         append allopts $cfg
657
658         eval dep_all="\$${cfg}_deps"
659         eval dep_any="\$${cfg}_deps_any"
660         eval dep_sel="\$${cfg}_select"
661         eval dep_sgs="\$${cfg}_suggest"
662         eval dep_ifa="\$${cfg}_if"
663         eval dep_ifn="\$${cfg}_if_any"
664
665         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
666         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
667         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
668
669         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
670         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
671         enabled_all  $dep_all || disable $cfg
672         enabled_any  $dep_any || disable $cfg
673         disabled_any $dep_sel && disable $cfg
674
675         if enabled $cfg; then
676             enable_deep $dep_sel
677             enable_deep_weak $dep_sgs
678         fi
679
680         disable ${cfg}_checking
681     done
682 }
683
684 check_deps(){
685     unset allopts
686
687     do_check_deps "$@"
688
689     for cfg in $allopts; do
690         enabled $cfg || continue
691         eval dep_extralibs="\$${cfg}_extralibs"
692         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
693     done
694 }
695
696 print_config(){
697     pfx=$1
698     files=$2
699     shift 2
700     map 'eval echo "$v \${$v:-no}"' "$@" |
701     awk "BEGIN { split(\"$files\", files) }
702         {
703             c = \"$pfx\" toupper(\$1);
704             v = \$2;
705             sub(/yes/, 1, v);
706             sub(/no/,  0, v);
707             for (f in files) {
708                 file = files[f];
709                 if (file ~ /\\.h\$/) {
710                     printf(\"#define %s %d\\n\", c, v) >>file;
711                 } else if (file ~ /\\.asm\$/) {
712                     printf(\"%%define %s %d\\n\", c, v) >>file;
713                 } else if (file ~ /\\.mak\$/) {
714                     n = -v ? \"\" : \"!\";
715                     printf(\"%s%s=yes\\n\", n, c) >>file;
716                 } else if (file ~ /\\.texi\$/) {
717                     pre = -v ? \"\" : \"@c \";
718                     yesno = \$2;
719                     c2 = tolower(c);
720                     gsub(/_/, \"-\", c2);
721                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
722                 }
723             }
724         }"
725 }
726
727 print_enabled(){
728     suf=$1
729     shift
730     for v; do
731         enabled $v && printf "%s\n" ${v%$suf};
732     done
733 }
734
735 append(){
736     var=$1
737     shift
738     eval "$var=\"\$$var $*\""
739 }
740
741 prepend(){
742     var=$1
743     shift
744     eval "$var=\"$* \$$var\""
745 }
746
747 unique(){
748     var=$1
749     uniq_list=""
750     for tok in $(eval echo \$$var); do
751         uniq_list="$(filter_out $tok $uniq_list) $tok"
752     done
753     eval "$var=\"${uniq_list}\""
754 }
755
756 add_cppflags(){
757     append CPPFLAGS "$@"
758 }
759
760 add_cflags(){
761     append CFLAGS $($cflags_filter "$@")
762 }
763
764 add_cxxflags(){
765     append CXXFLAGS $($cflags_filter "$@")
766 }
767
768 add_asflags(){
769     append ASFLAGS $($asflags_filter "$@")
770 }
771
772 add_ldflags(){
773     append LDFLAGS $($ldflags_filter "$@")
774 }
775
776 add_ldexeflags(){
777     append LDEXEFLAGS $($ldflags_filter "$@")
778 }
779
780 add_stripflags(){
781     append ASMSTRIPFLAGS "$@"
782 }
783
784 add_extralibs(){
785     prepend extralibs $($ldflags_filter "$@")
786 }
787
788 add_host_cppflags(){
789     append host_cppflags "$@"
790 }
791
792 add_host_cflags(){
793     append host_cflags $($host_cflags_filter "$@")
794 }
795
796 add_host_ldflags(){
797     append host_ldflags $($host_ldflags_filter "$@")
798 }
799
800 add_compat(){
801     append compat_objs $1
802     shift
803     map 'add_cppflags -D$v' "$@"
804 }
805
806 check_cmd(){
807     log "$@"
808     "$@" >> $logfile 2>&1
809 }
810
811 check_stat(){
812     log check_stat "$@"
813     stat "$1" >> $logfile 2>&1
814 }
815
816 cc_o(){
817     eval printf '%s\\n' $CC_O
818 }
819
820 cc_e(){
821     eval printf '%s\\n' $CC_E
822 }
823
824 check_cc(){
825     log check_cc "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
829 }
830
831 check_cxx(){
832     log check_cxx "$@"
833     cat > $TMPCPP
834     log_file $TMPCPP
835     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
836 }
837
838 check_oc(){
839     log check_oc "$@"
840     cat > $TMPM
841     log_file $TMPM
842     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
843 }
844
845 check_cpp(){
846     log check_cpp "$@"
847     cat > $TMPC
848     log_file $TMPC
849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
850 }
851
852 as_o(){
853     eval printf '%s\\n' $AS_O
854 }
855
856 check_as(){
857     log check_as "$@"
858     cat > $TMPS
859     log_file $TMPS
860     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
861 }
862
863 check_inline_asm(){
864     log check_inline_asm "$@"
865     name="$1"
866     code="$2"
867     shift 2
868     disable $name
869     check_cc "$@" <<EOF && enable $name
870 void foo(void){ __asm__ volatile($code); }
871 EOF
872 }
873
874 check_insn(){
875     log check_insn "$@"
876     check_inline_asm ${1}_inline "\"$2\""
877     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
878 }
879
880 check_yasm(){
881     log check_yasm "$@"
882     echo "$1" > $TMPS
883     log_file $TMPS
884     shift 1
885     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
886 }
887
888 ld_o(){
889     eval printf '%s\\n' $LD_O
890 }
891
892 check_ld(){
893     log check_ld "$@"
894     type=$1
895     shift 1
896     flags=$(filter_out '-l*|*.so' $@)
897     libs=$(filter '-l*|*.so' $@)
898     check_$type $($cflags_filter $flags) || return
899     flags=$($ldflags_filter $flags)
900     libs=$($ldflags_filter $libs)
901     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
902 }
903
904 print_include(){
905     hdr=$1
906     test "${hdr%.h}" = "${hdr}" &&
907         echo "#include $hdr"    ||
908         echo "#include <$hdr>"
909 }
910
911 check_code(){
912     log check_code "$@"
913     check=$1
914     headers=$2
915     code=$3
916     shift 3
917     {
918         for hdr in $headers; do
919             print_include $hdr
920         done
921         echo "int main(void) { $code; return 0; }"
922     } | check_$check "$@"
923 }
924
925 check_cppflags(){
926     log check_cppflags "$@"
927     check_cc "$@" <<EOF && append CPPFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_cflags(){
933     log test_cflags "$@"
934     set -- $($cflags_filter "$@")
935     check_cc "$@" <<EOF
936 int x;
937 EOF
938 }
939
940 check_cflags(){
941     log check_cflags "$@"
942     test_cflags "$@" && add_cflags "$@"
943 }
944
945 check_cxxflags(){
946     log check_cxxflags "$@"
947     set -- $($cflags_filter "$@")
948     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
949 int x;
950 EOF
951 }
952
953 test_ldflags(){
954     log test_ldflags "$@"
955     check_ld "cc" "$@" <<EOF
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_ldflags(){
961     log check_ldflags "$@"
962     test_ldflags "$@" && add_ldflags "$@"
963 }
964
965 test_stripflags(){
966     log test_stripflags "$@"
967     # call check_cc to get a fresh TMPO
968     check_cc <<EOF
969 int main(void) { return 0; }
970 EOF
971     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
972 }
973
974 check_stripflags(){
975     log check_stripflags "$@"
976     test_stripflags "$@" && add_stripflags "$@"
977 }
978
979 check_header(){
980     log check_header "$@"
981     header=$1
982     shift
983     disable_safe $header
984     check_cpp "$@" <<EOF && enable_safe $header
985 #include <$header>
986 int x;
987 EOF
988 }
989
990 check_header_oc(){
991     log check_header_oc "$@"
992     rm -f -- "$TMPO"
993     header=$1
994     shift
995     disable_safe $header
996     {
997        echo "#include <$header>"
998        echo "int main(void) { return 0; }"
999     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1000 }
1001
1002 check_func(){
1003     log check_func "$@"
1004     func=$1
1005     shift
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 extern int $func();
1009 int main(void){ $func(); }
1010 EOF
1011 }
1012
1013 check_mathfunc(){
1014     log check_mathfunc "$@"
1015     func=$1
1016     narg=$2
1017     shift 2
1018     test $narg = 2 && args="f, g" || args="f"
1019     disable $func
1020     check_ld "cc" "$@" <<EOF && enable $func
1021 #include <math.h>
1022 float foo(float f, float g) { return $func($args); }
1023 int main(void){ return (int) foo; }
1024 EOF
1025 }
1026
1027 check_func_headers(){
1028     log check_func_headers "$@"
1029     headers=$1
1030     funcs=$2
1031     shift 2
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         for func in $funcs; do
1037             echo "long check_$func(void) { return (long) $func; }"
1038         done
1039         echo "int main(void) { return 0; }"
1040     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_class_headers_cpp(){
1044     log check_class_headers_cpp "$@"
1045     headers=$1
1046     classes=$2
1047     shift 2
1048     {
1049         for hdr in $headers; do
1050             echo "#include <$hdr>"
1051         done
1052         echo "int main(void) { "
1053         i=1
1054         for class in $classes; do
1055             echo "$class obj$i;"
1056             i=$(expr $i + 1)
1057         done
1058         echo "return 0; }"
1059     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1060 }
1061
1062 check_cpp_condition(){
1063     log check_cpp_condition "$@"
1064     header=$1
1065     condition=$2
1066     shift 2
1067     check_cpp "$@" <<EOF
1068 #include <$header>
1069 #if !($condition)
1070 #error "unsatisfied condition: $condition"
1071 #endif
1072 EOF
1073 }
1074
1075 check_lib(){
1076     log check_lib "$@"
1077     header="$1"
1078     func="$2"
1079     shift 2
1080     check_header $header && check_func $func "$@" && add_extralibs "$@"
1081 }
1082
1083 check_lib2(){
1084     log check_lib2 "$@"
1085     headers="$1"
1086     funcs="$2"
1087     shift 2
1088     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1089 }
1090
1091 check_lib_cpp(){
1092     log check_lib_cpp "$@"
1093     headers="$1"
1094     classes="$2"
1095     shift 2
1096     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1097 }
1098
1099 check_pkg_config(){
1100     log check_pkg_config "$@"
1101     pkgandversion="$1"
1102     pkg="${1%% *}"
1103     headers="$2"
1104     funcs="$3"
1105     shift 3
1106     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1107     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1108     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1109     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1110         set_safe ${pkg}_cflags $pkg_cflags   &&
1111         set_safe ${pkg}_libs   $pkg_libs
1112 }
1113
1114 check_exec(){
1115     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1116 }
1117
1118 check_exec_crash(){
1119     code=$(cat)
1120
1121     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1122     # are safe but may not be available everywhere.  Thus we use
1123     # raise(SIGTERM) instead.  The check is run in a subshell so we
1124     # can redirect the "Terminated" message from the shell.  SIGBUS
1125     # is not defined by standard C so it is used conditionally.
1126
1127     (check_exec "$@") >> $logfile 2>&1 <<EOF
1128 #include <signal.h>
1129 static void sighandler(int sig){
1130     raise(SIGTERM);
1131 }
1132 int foo(void){
1133     $code
1134 }
1135 int (*func_ptr)(void) = foo;
1136 int main(void){
1137     signal(SIGILL, sighandler);
1138     signal(SIGFPE, sighandler);
1139     signal(SIGSEGV, sighandler);
1140 #ifdef SIGBUS
1141     signal(SIGBUS, sighandler);
1142 #endif
1143     return func_ptr();
1144 }
1145 EOF
1146 }
1147
1148 check_type(){
1149     log check_type "$@"
1150     headers=$1
1151     type=$2
1152     shift 2
1153     disable_safe "$type"
1154     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1155 }
1156
1157 check_struct(){
1158     log check_struct "$@"
1159     headers=$1
1160     struct=$2
1161     member=$3
1162     shift 3
1163     disable_safe "${struct}_${member}"
1164     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1165         enable_safe "${struct}_${member}"
1166 }
1167
1168 check_builtin(){
1169     log check_builtin "$@"
1170     name=$1
1171     headers=$2
1172     builtin=$3
1173     shift 3
1174     disable "$name"
1175     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1176 }
1177
1178 check_compile_assert(){
1179     log check_compile_assert "$@"
1180     name=$1
1181     headers=$2
1182     condition=$3
1183     shift 3
1184     disable "$name"
1185     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1186 }
1187
1188 require(){
1189     name="$1"
1190     header="$2"
1191     func="$3"
1192     shift 3
1193     check_lib $header $func "$@" || die "ERROR: $name not found"
1194 }
1195
1196 require2(){
1197     name="$1"
1198     headers="$2"
1199     func="$3"
1200     shift 3
1201     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1202 }
1203
1204 require_cpp(){
1205     name="$1"
1206     headers="$2"
1207     classes="$3"
1208     shift 3
1209     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1210 }
1211
1212 use_pkg_config(){
1213     pkg="$1"
1214     check_pkg_config "$@" || return 1
1215     add_cflags    $(get_safe ${pkg}_cflags)
1216     add_extralibs $(get_safe ${pkg}_libs)
1217 }
1218
1219 require_pkg_config(){
1220     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1221 }
1222
1223 require_libfreetype(){
1224     log require_libfreetype "$@"
1225     pkg="freetype2"
1226     check_cmd $pkg_config --exists --print-errors $pkg \
1227       || die "ERROR: $pkg not found"
1228     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1229     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1230     {
1231         echo "#include <ft2build.h>"
1232         echo "#include FT_FREETYPE_H"
1233         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1234         echo "int main(void) { return 0; }"
1235     } | check_ld "cc" $pkg_cflags $pkg_libs \
1236       && set_safe ${pkg}_cflags $pkg_cflags \
1237       && set_safe ${pkg}_libs   $pkg_libs \
1238       || die "ERROR: $pkg not found"
1239     add_cflags    $(get_safe ${pkg}_cflags)
1240     add_extralibs $(get_safe ${pkg}_libs)
1241 }
1242
1243 hostcc_e(){
1244     eval printf '%s\\n' $HOSTCC_E
1245 }
1246
1247 hostcc_o(){
1248     eval printf '%s\\n' $HOSTCC_O
1249 }
1250
1251 check_host_cc(){
1252     log check_host_cc "$@"
1253     cat > $TMPC
1254     log_file $TMPC
1255     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1256 }
1257
1258 check_host_cpp(){
1259     log check_host_cpp "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1263 }
1264
1265 check_host_cppflags(){
1266     log check_host_cppflags "$@"
1267     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1268 int x;
1269 EOF
1270 }
1271
1272 check_host_cflags(){
1273     log check_host_cflags "$@"
1274     set -- $($host_cflags_filter "$@")
1275     check_host_cc "$@" <<EOF && append host_cflags "$@"
1276 int x;
1277 EOF
1278 }
1279
1280 check_host_cpp_condition(){
1281     log check_host_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     check_host_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 apply(){
1294     file=$1
1295     shift
1296     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1297 }
1298
1299 cp_if_changed(){
1300     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1301     mkdir -p "$(dirname $2)"
1302     $cp_f "$1" "$2"
1303 }
1304
1305 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1306 # system-dependent things.
1307
1308 COMPONENT_LIST="
1309     bsfs
1310     decoders
1311     demuxers
1312     encoders
1313     filters
1314     hwaccels
1315     indevs
1316     muxers
1317     outdevs
1318     parsers
1319     protocols
1320 "
1321
1322 EXAMPLE_LIST="
1323     avio_reading_example
1324     decoding_encoding_example
1325     demuxing_decoding_example
1326     extract_mvs_example
1327     filter_audio_example
1328     filtering_audio_example
1329     filtering_video_example
1330     metadata_example
1331     muxing_example
1332     remuxing_example
1333     resampling_audio_example
1334     scaling_video_example
1335     transcode_aac_example
1336     transcoding_example
1337 "
1338
1339 EXTERNAL_LIBRARY_LIST="
1340     avisynth
1341     bzlib
1342     crystalhd
1343     decklink
1344     frei0r
1345     gnutls
1346     iconv
1347     ladspa
1348     libaacplus
1349     libass
1350     libbluray
1351     libbs2b
1352     libcaca
1353     libcdio
1354     libcelt
1355     libdc1394
1356     libfaac
1357     libfdk_aac
1358     libflite
1359     libfontconfig
1360     libfreetype
1361     libfribidi
1362     libgme
1363     libgsm
1364     libiec61883
1365     libilbc
1366     libmfx
1367     libmodplug
1368     libmp3lame
1369     libnut
1370     libopencore_amrnb
1371     libopencore_amrwb
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     libquvi
1378     librtmp
1379     libschroedinger
1380     libshine
1381     libsmbclient
1382     libsoxr
1383     libspeex
1384     libssh
1385     libstagefright_h264
1386     libtheora
1387     libtwolame
1388     libutvideo
1389     libv4l2
1390     libvidstab
1391     libvo_aacenc
1392     libvo_amrwbenc
1393     libvorbis
1394     libvpx
1395     libwavpack
1396     libwebp
1397     libx264
1398     libx265
1399     libxavs
1400     libxcb
1401     libxcb_shm
1402     libxcb_shape
1403     libxcb_xfixes
1404     libxvid
1405     libzmq
1406     libzvbi
1407     lzma
1408     nvenc
1409     openal
1410     opencl
1411     opengl
1412     openssl
1413     sdl
1414     x11grab
1415     xlib
1416     zlib
1417 "
1418
1419 DOCUMENT_LIST="
1420     doc
1421     htmlpages
1422     manpages
1423     podpages
1424     txtpages
1425 "
1426
1427 FEATURE_LIST="
1428     ftrapv
1429     gray
1430     hardcoded_tables
1431     runtime_cpudetect
1432     safe_bitstream_reader
1433     shared
1434     small
1435     static
1436     swscale_alpha
1437 "
1438
1439 HWACCEL_LIST="
1440     dxva2
1441     vaapi
1442     vda
1443     vdpau
1444     xvmc
1445 "
1446
1447 LIBRARY_LIST="
1448     avcodec
1449     avdevice
1450     avfilter
1451     avformat
1452     avresample
1453     avutil
1454     postproc
1455     swresample
1456     swscale
1457 "
1458
1459 LICENSE_LIST="
1460     gpl
1461     nonfree
1462     version3
1463 "
1464
1465 PROGRAM_LIST="
1466     ffplay
1467     ffprobe
1468     ffserver
1469     ffmpeg
1470 "
1471
1472 SUBSYSTEM_LIST="
1473     dct
1474     dwt
1475     error_resilience
1476     faan
1477     fast_unaligned
1478     fft
1479     lsp
1480     lzo
1481     mdct
1482     pixelutils
1483     network
1484     qsv
1485     rdft
1486 "
1487
1488 CONFIG_LIST="
1489     $COMPONENT_LIST
1490     $DOCUMENT_LIST
1491     $EXAMPLE_LIST
1492     $EXTERNAL_LIBRARY_LIST
1493     $FEATURE_LIST
1494     $HWACCEL_LIST
1495     $LICENSE_LIST
1496     $LIBRARY_LIST
1497     $PROGRAM_LIST
1498     $SUBSYSTEM_LIST
1499     fontconfig
1500     incompatible_libav_abi
1501     memalign_hack
1502     memory_poisoning
1503     neon_clobber_test
1504     pic
1505     pod2man
1506     raise_major
1507     thumb
1508     xmm_clobber_test
1509 "
1510
1511 THREADS_LIST="
1512     pthreads
1513     os2threads
1514     w32threads
1515 "
1516
1517 ATOMICS_LIST="
1518     atomics_gcc
1519     atomics_suncc
1520     atomics_win32
1521 "
1522
1523 ARCH_LIST="
1524     aarch64
1525     alpha
1526     arm
1527     avr32
1528     avr32_ap
1529     avr32_uc
1530     bfin
1531     ia64
1532     m68k
1533     mips
1534     mips64
1535     parisc
1536     ppc
1537     ppc64
1538     s390
1539     sh4
1540     sparc
1541     sparc64
1542     tilegx
1543     tilepro
1544     tomi
1545     x86
1546     x86_32
1547     x86_64
1548 "
1549
1550 ARCH_EXT_LIST_ARM="
1551     armv5te
1552     armv6
1553     armv6t2
1554     armv8
1555     neon
1556     vfp
1557     vfpv3
1558     setend
1559 "
1560
1561 ARCH_EXT_LIST_MIPS="
1562     mipsfpu
1563     mips32r2
1564     mipsdspr1
1565     mipsdspr2
1566 "
1567
1568 ARCH_EXT_LIST_X86_SIMD="
1569     amd3dnow
1570     amd3dnowext
1571     avx
1572     avx2
1573     fma3
1574     fma4
1575     mmx
1576     mmxext
1577     sse
1578     sse2
1579     sse3
1580     sse4
1581     sse42
1582     ssse3
1583     xop
1584 "
1585
1586 ARCH_EXT_LIST_PPC="
1587     altivec
1588     dcbzl
1589     ldbrx
1590     ppc4xx
1591     vsx
1592 "
1593
1594 ARCH_EXT_LIST_X86="
1595     $ARCH_EXT_LIST_X86_SIMD
1596     cpunop
1597     i686
1598 "
1599
1600 ARCH_EXT_LIST="
1601     $ARCH_EXT_LIST_ARM
1602     $ARCH_EXT_LIST_PPC
1603     $ARCH_EXT_LIST_X86
1604     $ARCH_EXT_LIST_MIPS
1605     loongson
1606 "
1607
1608 ARCH_FEATURES="
1609     aligned_stack
1610     fast_64bit
1611     fast_clz
1612     fast_cmov
1613     local_aligned_8
1614     local_aligned_16
1615     local_aligned_32
1616     simd_align_16
1617 "
1618
1619 BUILTIN_LIST="
1620     atomic_cas_ptr
1621     atomic_compare_exchange
1622     machine_rw_barrier
1623     MemoryBarrier
1624     mm_empty
1625     rdtsc
1626     sarestart
1627     sync_val_compare_and_swap
1628 "
1629 HAVE_LIST_CMDLINE="
1630     inline_asm
1631     symver
1632     yasm
1633 "
1634
1635 HAVE_LIST_PUB="
1636     bigendian
1637     fast_unaligned
1638     incompatible_libav_abi
1639 "
1640
1641 HEADERS_LIST="
1642     alsa_asoundlib_h
1643     altivec_h
1644     arpa_inet_h
1645     asm_types_h
1646     cdio_paranoia_h
1647     cdio_paranoia_paranoia_h
1648     dev_bktr_ioctl_bt848_h
1649     dev_bktr_ioctl_meteor_h
1650     dev_ic_bt8xx_h
1651     dev_video_bktr_ioctl_bt848_h
1652     dev_video_meteor_ioctl_meteor_h
1653     direct_h
1654     dlfcn_h
1655     dxva_h
1656     ES2_gl_h
1657     gsm_h
1658     io_h
1659     mach_mach_time_h
1660     machine_ioctl_bt848_h
1661     machine_ioctl_meteor_h
1662     malloc_h
1663     openjpeg_1_5_openjpeg_h
1664     OpenGL_gl3_h
1665     poll_h
1666     sndio_h
1667     soundcard_h
1668     sys_mman_h
1669     sys_param_h
1670     sys_resource_h
1671     sys_select_h
1672     sys_soundcard_h
1673     sys_time_h
1674     sys_un_h
1675     sys_videoio_h
1676     termios_h
1677     udplite_h
1678     unistd_h
1679     windows_h
1680     winsock2_h
1681 "
1682
1683 INTRINSICS_LIST="
1684     intrinsics_neon
1685 "
1686
1687 MATH_FUNCS="
1688     atanf
1689     atan2f
1690     cbrt
1691     cbrtf
1692     cosf
1693     exp2
1694     exp2f
1695     expf
1696     isinf
1697     isnan
1698     ldexpf
1699     llrint
1700     llrintf
1701     log2
1702     log2f
1703     log10f
1704     lrint
1705     lrintf
1706     powf
1707     rint
1708     round
1709     roundf
1710     sinf
1711     trunc
1712     truncf
1713 "
1714
1715 SYSTEM_FUNCS="
1716     access
1717     aligned_malloc
1718     clock_gettime
1719     closesocket
1720     CommandLineToArgvW
1721     CoTaskMemFree
1722     CryptGenRandom
1723     dlopen
1724     fcntl
1725     flt_lim
1726     fork
1727     getaddrinfo
1728     gethrtime
1729     getopt
1730     GetProcessAffinityMask
1731     GetProcessMemoryInfo
1732     GetProcessTimes
1733     getrusage
1734     getservbyport
1735     GetSystemTimeAsFileTime
1736     gettimeofday
1737     glob
1738     glXGetProcAddress
1739     gmtime_r
1740     inet_aton
1741     isatty
1742     jack_port_get_latency_range
1743     kbhit
1744     localtime_r
1745     lzo1x_999_compress
1746     mach_absolute_time
1747     MapViewOfFile
1748     memalign
1749     mkstemp
1750     mmap
1751     mprotect
1752     nanosleep
1753     PeekNamedPipe
1754     posix_memalign
1755     pthread_cancel
1756     sched_getaffinity
1757     SetConsoleTextAttribute
1758     setmode
1759     setrlimit
1760     Sleep
1761     strerror_r
1762     sysconf
1763     sysctl
1764     usleep
1765     VirtualAlloc
1766     wglGetProcAddress
1767 "
1768
1769 TOOLCHAIN_FEATURES="
1770     as_dn_directive
1771     as_func
1772     asm_mod_q
1773     attribute_may_alias
1774     attribute_packed
1775     ebp_available
1776     ebx_available
1777     gnu_as
1778     gnu_windres
1779     ibm_asm
1780     inline_asm_labels
1781     inline_asm_nonlocal_labels
1782     inline_asm_direct_symbol_refs
1783     pragma_deprecated
1784     rsync_contimeout
1785     symver_asm_label
1786     symver_gnu_asm
1787     vfp_args
1788     xform_asm
1789     xmm_clobbers
1790 "
1791
1792 TYPES_LIST="
1793     CONDITION_VARIABLE_Ptr
1794     DXVA_PicParams_HEVC
1795     socklen_t
1796     struct_addrinfo
1797     struct_group_source_req
1798     struct_ip_mreq_source
1799     struct_ipv6_mreq
1800     struct_pollfd
1801     struct_rusage_ru_maxrss
1802     struct_sctp_event_subscribe
1803     struct_sockaddr_in6
1804     struct_sockaddr_sa_len
1805     struct_sockaddr_storage
1806     struct_stat_st_mtim_tv_nsec
1807     struct_v4l2_frmivalenum_discrete
1808 "
1809
1810 HAVE_LIST="
1811     $ARCH_EXT_LIST
1812     $(add_suffix _external $ARCH_EXT_LIST)
1813     $(add_suffix _inline   $ARCH_EXT_LIST)
1814     $ARCH_FEATURES
1815     $ATOMICS_LIST
1816     $BUILTIN_LIST
1817     $HAVE_LIST_CMDLINE
1818     $HAVE_LIST_PUB
1819     $HEADERS_LIST
1820     $INTRINSICS_LIST
1821     $MATH_FUNCS
1822     $SYSTEM_FUNCS
1823     $THREADS_LIST
1824     $TOOLCHAIN_FEATURES
1825     $TYPES_LIST
1826     atomics_native
1827     dos_paths
1828     dxva2api_cobj
1829     dxva2_lib
1830     libc_msvcrt
1831     libdc1394_1
1832     libdc1394_2
1833     makeinfo
1834     makeinfo_html
1835     perl
1836     pod2man
1837     sdl
1838     section_data_rel_ro
1839     texi2html
1840     threads
1841     vdpau_x11
1842     xlib
1843 "
1844
1845 # options emitted with CONFIG_ prefix but not available on the command line
1846 CONFIG_EXTRA="
1847     aandcttables
1848     ac3dsp
1849     audio_frame_queue
1850     audiodsp
1851     blockdsp
1852     bswapdsp
1853     cabac
1854     dvprofile
1855     exif
1856     faandct
1857     faanidct
1858     fdctdsp
1859     frame_thread_encoder
1860     gcrypt
1861     golomb
1862     gplv3
1863     h263dsp
1864     h264chroma
1865     h264dsp
1866     h264pred
1867     h264qpel
1868     hpeldsp
1869     huffman
1870     huffyuvdsp
1871     huffyuvencdsp
1872     idctdsp
1873     iirfilter
1874     imdct15
1875     intrax8
1876     lgplv3
1877     llauddsp
1878     llviddsp
1879     lpc
1880     me_cmp
1881     mpeg_er
1882     mpegaudio
1883     mpegaudiodsp
1884     mpegvideo
1885     mpegvideoenc
1886     nettle
1887     pixblockdsp
1888     qpeldsp
1889     rangecoder
1890     riffdec
1891     riffenc
1892     rtpdec
1893     rtpenc_chain
1894     sinewin
1895     startcode
1896     tpeldsp
1897     videodsp
1898     vp3dsp
1899     wma_freqs
1900 "
1901
1902 CMDLINE_SELECT="
1903     $ARCH_EXT_LIST
1904     $CONFIG_LIST
1905     $HAVE_LIST_CMDLINE
1906     $THREADS_LIST
1907     asm
1908     cross_compile
1909     debug
1910     extra_warnings
1911     logging
1912     lto
1913     optimizations
1914     rpath
1915     stripping
1916 "
1917
1918 PATHS_LIST="
1919     bindir
1920     datadir
1921     docdir
1922     incdir
1923     libdir
1924     mandir
1925     prefix
1926     shlibdir
1927 "
1928
1929 CMDLINE_SET="
1930     $PATHS_LIST
1931     ar
1932     arch
1933     as
1934     assert_level
1935     build_suffix
1936     cc
1937     cpu
1938     cross_prefix
1939     cxx
1940     dep_cc
1941     doxygen
1942     extra_version
1943     gas
1944     host_cc
1945     host_cflags
1946     host_ld
1947     host_ldflags
1948     host_libs
1949     host_os
1950     install
1951     ld
1952     logfile
1953     malloc_prefix
1954     nm
1955     optflags
1956     pkg_config
1957     pkg_config_flags
1958     progs_suffix
1959     random_seed
1960     ranlib
1961     samples
1962     strip
1963     sws_max_filter_size
1964     sysinclude
1965     sysroot
1966     target_exec
1967     target_os
1968     target_path
1969     target_samples
1970     tempprefix
1971     toolchain
1972     valgrind
1973     yasmexe
1974 "
1975
1976 CMDLINE_APPEND="
1977     extra_cflags
1978     extra_cxxflags
1979     host_cppflags
1980 "
1981
1982 # code dependency declarations
1983
1984 # architecture extensions
1985
1986 armv5te_deps="arm"
1987 armv6_deps="arm"
1988 armv6t2_deps="arm"
1989 armv8_deps="aarch64"
1990 neon_deps_any="aarch64 arm"
1991 intrinsics_neon_deps="neon"
1992 vfp_deps_any="aarch64 arm"
1993 vfpv3_deps="vfp"
1994 setend_deps="arm"
1995
1996 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1997
1998 mipsfpu_deps="mips"
1999 mips32r2_deps="mips"
2000 mipsdspr1_deps="mips"
2001 mipsdspr2_deps="mips"
2002
2003 altivec_deps="ppc"
2004 ppc4xx_deps="ppc"
2005 vsx_deps="ppc"
2006
2007 cpunop_deps="i686"
2008 x86_64_select="i686"
2009 x86_64_suggest="fast_cmov"
2010
2011 amd3dnow_deps="mmx"
2012 amd3dnowext_deps="amd3dnow"
2013 i686_deps="x86"
2014 mmx_deps="x86"
2015 mmxext_deps="mmx"
2016 sse_deps="mmxext"
2017 sse2_deps="sse"
2018 sse3_deps="sse2"
2019 ssse3_deps="sse3"
2020 sse4_deps="ssse3"
2021 sse42_deps="sse4"
2022 avx_deps="sse42"
2023 xop_deps="avx"
2024 fma3_deps="avx"
2025 fma4_deps="avx"
2026 avx2_deps="avx"
2027
2028 mmx_external_deps="yasm"
2029 mmx_inline_deps="inline_asm"
2030 mmx_suggest="mmx_external mmx_inline"
2031
2032 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2033     eval dep=\$${ext}_deps
2034     eval ${ext}_external_deps='"${dep}_external"'
2035     eval ${ext}_inline_deps='"${dep}_inline"'
2036     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2037 done
2038
2039 aligned_stack_if_any="aarch64 ppc x86"
2040 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2041 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2042 fast_unaligned_if_any="aarch64 ppc x86"
2043 simd_align_16_if_any="altivec neon sse"
2044
2045 # system capabilities
2046
2047 symver_if_any="symver_asm_label symver_gnu_asm"
2048
2049 # threading support
2050 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2051 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2052 atomics_win32_if="MemoryBarrier"
2053 atomics_native_if_any="$ATOMICS_LIST"
2054 w32threads_deps="atomics_native"
2055 threads_if_any="$THREADS_LIST"
2056
2057 # subsystems
2058 dct_select="rdft"
2059 error_resilience_select="me_cmp"
2060 faandct_deps="faan fdctdsp"
2061 faanidct_deps="faan idctdsp"
2062 frame_thread_encoder_deps="encoders threads"
2063 intrax8_select="error_resilience"
2064 mdct_select="fft"
2065 rdft_select="fft"
2066 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2067 mpeg_er_select="error_resilience"
2068 mpegaudio_select="mpegaudiodsp"
2069 mpegaudiodsp_select="dct"
2070 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2071 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2072
2073 # decoders / encoders
2074 aac_decoder_select="imdct15 mdct sinewin"
2075 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2076 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2077 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2078 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2079 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2080 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2081 aic_decoder_select="golomb idctdsp"
2082 alac_encoder_select="lpc"
2083 als_decoder_select="bswapdsp"
2084 amrnb_decoder_select="lsp"
2085 amrwb_decoder_select="lsp"
2086 amv_decoder_select="sp5x_decoder exif"
2087 amv_encoder_select="aandcttables mpegvideoenc"
2088 ape_decoder_select="bswapdsp llauddsp"
2089 apng_decoder_select="zlib"
2090 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2091 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2092 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2093 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2094 atrac1_decoder_select="mdct sinewin"
2095 atrac3_decoder_select="mdct"
2096 atrac3p_decoder_select="mdct sinewin"
2097 avrn_decoder_select="exif"
2098 bink_decoder_select="blockdsp hpeldsp"
2099 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2100 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2101 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2102 cllc_decoder_select="bswapdsp"
2103 comfortnoise_encoder_select="lpc"
2104 cook_decoder_select="audiodsp mdct sinewin"
2105 cscd_decoder_select="lzo"
2106 cscd_decoder_suggest="zlib"
2107 dca_decoder_select="mdct"
2108 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2109 dnxhd_decoder_select="blockdsp idctdsp"
2110 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2111 dvvideo_decoder_select="dvprofile idctdsp"
2112 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2113 dxa_decoder_select="zlib"
2114 eac3_decoder_select="ac3_decoder"
2115 eac3_encoder_select="ac3_encoder"
2116 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2117 eatgq_decoder_select="aandcttables"
2118 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2119 exr_decoder_select="zlib"
2120 ffv1_decoder_select="golomb rangecoder"
2121 ffv1_encoder_select="rangecoder"
2122 ffvhuff_decoder_select="huffyuv_decoder"
2123 ffvhuff_encoder_select="huffyuv_encoder"
2124 fic_decoder_select="golomb"
2125 flac_decoder_select="golomb"
2126 flac_encoder_select="bswapdsp golomb lpc"
2127 flashsv_decoder_select="zlib"
2128 flashsv_encoder_select="zlib"
2129 flashsv2_encoder_select="zlib"
2130 flashsv2_decoder_select="zlib"
2131 flv_decoder_select="h263_decoder"
2132 flv_encoder_select="h263_encoder"
2133 fourxm_decoder_select="blockdsp bswapdsp"
2134 fraps_decoder_select="bswapdsp huffman"
2135 g2m_decoder_select="blockdsp idctdsp zlib"
2136 g729_decoder_select="audiodsp"
2137 h261_decoder_select="mpeg_er mpegvideo"
2138 h261_encoder_select="aandcttables mpegvideoenc"
2139 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2140 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2141 h263i_decoder_select="h263_decoder"
2142 h263p_encoder_select="h263_encoder"
2143 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2144 h264_decoder_suggest="error_resilience"
2145 h264_qsv_decoder_deps="libmfx"
2146 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2147 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2148 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2149 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2150 iac_decoder_select="imc_decoder"
2151 imc_decoder_select="bswapdsp fft mdct sinewin"
2152 indeo3_decoder_select="hpeldsp"
2153 interplay_video_decoder_select="hpeldsp"
2154 jpegls_decoder_select="golomb mjpeg_decoder"
2155 jpegls_encoder_select="golomb"
2156 jv_decoder_select="blockdsp"
2157 lagarith_decoder_select="huffyuvdsp"
2158 ljpeg_encoder_select="aandcttables idctdsp"
2159 loco_decoder_select="golomb"
2160 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2161 metasound_decoder_select="lsp mdct sinewin"
2162 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2163 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2164 mjpeg_encoder_select="aandcttables mpegvideoenc"
2165 mjpegb_decoder_select="mjpeg_decoder"
2166 mlp_decoder_select="mlp_parser"
2167 motionpixels_decoder_select="bswapdsp"
2168 mp1_decoder_select="mpegaudio"
2169 mp1float_decoder_select="mpegaudio"
2170 mp2_decoder_select="mpegaudio"
2171 mp2float_decoder_select="mpegaudio"
2172 mp3_decoder_select="mpegaudio"
2173 mp3adu_decoder_select="mpegaudio"
2174 mp3adufloat_decoder_select="mpegaudio"
2175 mp3float_decoder_select="mpegaudio"
2176 mp3on4_decoder_select="mpegaudio"
2177 mp3on4float_decoder_select="mpegaudio"
2178 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2179 mpc8_decoder_select="mpegaudiodsp"
2180 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2181 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2182 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2183 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2184 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2185 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2186 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2187 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2188 mpeg4_encoder_select="h263_encoder"
2189 msmpeg4v1_decoder_select="h263_decoder"
2190 msmpeg4v2_decoder_select="h263_decoder"
2191 msmpeg4v2_encoder_select="h263_encoder"
2192 msmpeg4v3_decoder_select="h263_decoder"
2193 msmpeg4v3_encoder_select="h263_encoder"
2194 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2195 mxpeg_decoder_select="mjpeg_decoder"
2196 nellymoser_decoder_select="mdct sinewin"
2197 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2198 nuv_decoder_select="idctdsp lzo"
2199 on2avc_decoder_select="mdct"
2200 opus_decoder_deps="swresample"
2201 opus_decoder_select="imdct15"
2202 png_decoder_select="zlib"
2203 png_encoder_select="huffyuvencdsp zlib"
2204 prores_decoder_select="blockdsp idctdsp"
2205 prores_encoder_select="fdctdsp"
2206 qcelp_decoder_select="lsp"
2207 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2208 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2209 ra_144_decoder_select="audiodsp"
2210 ralf_decoder_select="golomb"
2211 rawvideo_decoder_select="bswapdsp"
2212 rtjpeg_decoder_select="me_cmp"
2213 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2214 rv10_encoder_select="h263_encoder"
2215 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2216 rv20_encoder_select="h263_encoder"
2217 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2218 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2219 shorten_decoder_select="golomb"
2220 sipr_decoder_select="lsp"
2221 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2222 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2223 sonic_decoder_select="golomb rangecoder"
2224 sonic_encoder_select="golomb rangecoder"
2225 sonic_ls_encoder_select="golomb rangecoder"
2226 sp5x_decoder_select="mjpeg_decoder"
2227 svq1_decoder_select="hpeldsp"
2228 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2229 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2230 svq3_decoder_suggest="zlib"
2231 tak_decoder_select="audiodsp"
2232 theora_decoder_select="vp3_decoder"
2233 thp_decoder_select="mjpeg_decoder"
2234 tiff_decoder_suggest="zlib lzma"
2235 tiff_encoder_suggest="zlib"
2236 truehd_decoder_select="mlp_parser"
2237 truemotion2_decoder_select="bswapdsp"
2238 truespeech_decoder_select="bswapdsp"
2239 tscc_decoder_select="zlib"
2240 twinvq_decoder_select="mdct lsp sinewin"
2241 utvideo_decoder_select="bswapdsp"
2242 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2243 vble_decoder_select="huffyuvdsp"
2244 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2245 vc1image_decoder_select="vc1_decoder"
2246 vorbis_decoder_select="mdct"
2247 vorbis_encoder_select="mdct"
2248 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2249 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2250 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2251 vp6a_decoder_select="vp6_decoder"
2252 vp6f_decoder_select="vp6_decoder"
2253 vp7_decoder_select="h264pred videodsp"
2254 vp8_decoder_select="h264pred videodsp"
2255 vp9_decoder_select="videodsp vp9_parser"
2256 webp_decoder_select="vp8_decoder"
2257 wmalossless_decoder_select="llauddsp"
2258 wmapro_decoder_select="mdct sinewin wma_freqs"
2259 wmav1_decoder_select="mdct sinewin wma_freqs"
2260 wmav1_encoder_select="mdct sinewin wma_freqs"
2261 wmav2_decoder_select="mdct sinewin wma_freqs"
2262 wmav2_encoder_select="mdct sinewin wma_freqs"
2263 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2264 wmv1_decoder_select="h263_decoder"
2265 wmv1_encoder_select="h263_encoder"
2266 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2267 wmv2_encoder_select="h263_encoder"
2268 wmv3_decoder_select="vc1_decoder"
2269 wmv3image_decoder_select="wmv3_decoder"
2270 zerocodec_decoder_select="zlib"
2271 zlib_decoder_select="zlib"
2272 zlib_encoder_select="zlib"
2273 zmbv_decoder_select="zlib"
2274 zmbv_encoder_select="zlib"
2275
2276 # hardware accelerators
2277 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2278 dxva2_deps="dxva2api_h"
2279 vaapi_deps="va_va_h"
2280 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2281 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2282 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2283 xvmc_deps="X11_extensions_XvMClib_h"
2284
2285 h263_vaapi_hwaccel_deps="vaapi"
2286 h263_vaapi_hwaccel_select="h263_decoder"
2287 h263_vdpau_hwaccel_deps="vdpau"
2288 h263_vdpau_hwaccel_select="h263_decoder"
2289 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2290 h264_dxva2_hwaccel_deps="dxva2"
2291 h264_dxva2_hwaccel_select="h264_decoder"
2292 h264_qsv_hwaccel_deps="libmfx"
2293 h264_vaapi_hwaccel_deps="vaapi"
2294 h264_vaapi_hwaccel_select="h264_decoder"
2295 h264_vda_decoder_deps="vda"
2296 h264_vda_decoder_select="h264_decoder"
2297 h264_vda_hwaccel_deps="vda"
2298 h264_vda_hwaccel_select="h264_decoder"
2299 h264_vda_old_hwaccel_deps="vda"
2300 h264_vda_old_hwaccel_select="h264_decoder"
2301 h264_vdpau_decoder_deps="vdpau"
2302 h264_vdpau_decoder_select="h264_decoder"
2303 h264_vdpau_hwaccel_deps="vdpau"
2304 h264_vdpau_hwaccel_select="h264_decoder"
2305 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2306 hevc_dxva2_hwaccel_select="hevc_decoder"
2307 mpeg_vdpau_decoder_deps="vdpau"
2308 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2309 mpeg_xvmc_hwaccel_deps="xvmc"
2310 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2311 mpeg1_vdpau_decoder_deps="vdpau"
2312 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2313 mpeg1_vdpau_hwaccel_deps="vdpau"
2314 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2315 mpeg1_xvmc_hwaccel_deps="xvmc"
2316 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2317 mpeg2_crystalhd_decoder_select="crystalhd"
2318 mpeg2_dxva2_hwaccel_deps="dxva2"
2319 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2320 mpeg2_vaapi_hwaccel_deps="vaapi"
2321 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2322 mpeg2_vdpau_hwaccel_deps="vdpau"
2323 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2324 mpeg2_xvmc_hwaccel_deps="xvmc"
2325 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2326 mpeg4_crystalhd_decoder_select="crystalhd"
2327 mpeg4_vaapi_hwaccel_deps="vaapi"
2328 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2329 mpeg4_vdpau_decoder_deps="vdpau"
2330 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2331 mpeg4_vdpau_hwaccel_deps="vdpau"
2332 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2333 msmpeg4_crystalhd_decoder_select="crystalhd"
2334 vc1_crystalhd_decoder_select="crystalhd"
2335 vc1_dxva2_hwaccel_deps="dxva2"
2336 vc1_dxva2_hwaccel_select="vc1_decoder"
2337 vc1_vaapi_hwaccel_deps="vaapi"
2338 vc1_vaapi_hwaccel_select="vc1_decoder"
2339 vc1_vdpau_decoder_deps="vdpau"
2340 vc1_vdpau_decoder_select="vc1_decoder"
2341 vc1_vdpau_hwaccel_deps="vdpau"
2342 vc1_vdpau_hwaccel_select="vc1_decoder"
2343 wmv3_crystalhd_decoder_select="crystalhd"
2344 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2345 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2346 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2347 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2348
2349 # parsers
2350 h264_parser_select="h264_decoder"
2351 hevc_parser_select="hevc_decoder"
2352 mpegvideo_parser_select="mpegvideo"
2353 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2354 vc1_parser_select="mpegvideo startcode vc1_decoder"
2355
2356 # external libraries
2357 libaacplus_encoder_deps="libaacplus"
2358 libcelt_decoder_deps="libcelt"
2359 libfaac_encoder_deps="libfaac"
2360 libfaac_encoder_select="audio_frame_queue"
2361 libfdk_aac_decoder_deps="libfdk_aac"
2362 libfdk_aac_encoder_deps="libfdk_aac"
2363 libfdk_aac_encoder_select="audio_frame_queue"
2364 libgme_demuxer_deps="libgme"
2365 libgsm_decoder_deps="libgsm"
2366 libgsm_encoder_deps="libgsm"
2367 libgsm_ms_decoder_deps="libgsm"
2368 libgsm_ms_encoder_deps="libgsm"
2369 libilbc_decoder_deps="libilbc"
2370 libilbc_encoder_deps="libilbc"
2371 libmodplug_demuxer_deps="libmodplug"
2372 libmp3lame_encoder_deps="libmp3lame"
2373 libmp3lame_encoder_select="audio_frame_queue"
2374 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2375 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2376 libopencore_amrnb_encoder_select="audio_frame_queue"
2377 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2378 libopenh264_encoder_deps="libopenh264"
2379 libopenjpeg_decoder_deps="libopenjpeg"
2380 libopenjpeg_encoder_deps="libopenjpeg"
2381 libopus_decoder_deps="libopus"
2382 libopus_encoder_deps="libopus"
2383 libopus_encoder_select="audio_frame_queue"
2384 libquvi_demuxer_deps="libquvi"
2385 libschroedinger_decoder_deps="libschroedinger"
2386 libschroedinger_encoder_deps="libschroedinger"
2387 libshine_encoder_deps="libshine"
2388 libshine_encoder_select="audio_frame_queue"
2389 libspeex_decoder_deps="libspeex"
2390 libspeex_encoder_deps="libspeex"
2391 libspeex_encoder_select="audio_frame_queue"
2392 libstagefright_h264_decoder_deps="libstagefright_h264"
2393 libtheora_encoder_deps="libtheora"
2394 libtwolame_encoder_deps="libtwolame"
2395 libvo_aacenc_encoder_deps="libvo_aacenc"
2396 libvo_aacenc_encoder_select="audio_frame_queue"
2397 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2398 libvorbis_decoder_deps="libvorbis"
2399 libvorbis_encoder_deps="libvorbis"
2400 libvorbis_encoder_select="audio_frame_queue"
2401 libvpx_vp8_decoder_deps="libvpx"
2402 libvpx_vp8_encoder_deps="libvpx"
2403 libvpx_vp9_decoder_deps="libvpx"
2404 libvpx_vp9_encoder_deps="libvpx"
2405 libwavpack_encoder_deps="libwavpack"
2406 libwebp_encoder_deps="libwebp"
2407 libx264_encoder_deps="libx264"
2408 libx264rgb_encoder_deps="libx264"
2409 libx264rgb_encoder_select="libx264_encoder"
2410 libx265_encoder_deps="libx265"
2411 libxavs_encoder_deps="libxavs"
2412 libxvid_encoder_deps="libxvid"
2413 libutvideo_decoder_deps="libutvideo"
2414 libutvideo_encoder_deps="libutvideo"
2415 libzvbi_teletext_decoder_deps="libzvbi"
2416 nvenc_encoder_deps="nvenc"
2417
2418 # demuxers / muxers
2419 ac3_demuxer_select="ac3_parser"
2420 asf_demuxer_select="riffdec"
2421 asf_muxer_select="riffenc"
2422 asf_stream_muxer_select="asf_muxer"
2423 avi_demuxer_select="riffdec exif"
2424 avi_muxer_select="riffenc"
2425 avisynth_demuxer_deps="avisynth"
2426 avisynth_demuxer_select="riffdec"
2427 caf_demuxer_select="riffdec"
2428 dash_muxer_select="mp4_muxer"
2429 dirac_demuxer_select="dirac_parser"
2430 dts_demuxer_select="dca_parser"
2431 dtshd_demuxer_select="dca_parser"
2432 dv_demuxer_select="dvprofile"
2433 dv_muxer_select="dvprofile"
2434 dxa_demuxer_select="riffdec"
2435 eac3_demuxer_select="ac3_parser"
2436 f4v_muxer_select="mov_muxer"
2437 flac_demuxer_select="flac_parser"
2438 hds_muxer_select="flv_muxer"
2439 hls_muxer_select="mpegts_muxer"
2440 image2_alias_pix_demuxer_select="image2_demuxer"
2441 image2_brender_pix_demuxer_select="image2_demuxer"
2442 ipod_muxer_select="mov_muxer"
2443 ismv_muxer_select="mov_muxer"
2444 libnut_demuxer_deps="libnut"
2445 libnut_muxer_deps="libnut"
2446 matroska_audio_muxer_select="matroska_muxer"
2447 matroska_demuxer_select="riffdec"
2448 matroska_demuxer_suggest="bzlib lzo zlib"
2449 matroska_muxer_select="riffenc"
2450 mmf_muxer_select="riffenc"
2451 mov_demuxer_select="riffdec"
2452 mov_demuxer_suggest="zlib"
2453 mov_muxer_select="riffenc rtpenc_chain"
2454 mp3_demuxer_select="mpegaudio_parser"
2455 mp4_muxer_select="mov_muxer"
2456 mpegts_muxer_select="adts_muxer latm_muxer"
2457 mpegtsraw_demuxer_select="mpegts_demuxer"
2458 mxf_d10_muxer_select="mxf_muxer"
2459 mxf_opatom_muxer_select="mxf_muxer"
2460 nut_muxer_select="riffenc"
2461 nuv_demuxer_select="riffdec"
2462 oga_muxer_select="ogg_muxer"
2463 ogg_demuxer_select="golomb"
2464 opus_muxer_select="ogg_muxer"
2465 psp_muxer_select="mov_muxer"
2466 rtp_demuxer_select="sdp_demuxer"
2467 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2468 rtsp_demuxer_select="http_protocol rtpdec"
2469 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2470 sap_demuxer_select="sdp_demuxer"
2471 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2472 sdp_demuxer_select="rtpdec"
2473 smoothstreaming_muxer_select="ismv_muxer"
2474 spdif_muxer_select="aac_parser"
2475 spx_muxer_select="ogg_muxer"
2476 tak_demuxer_select="tak_parser"
2477 tg2_muxer_select="mov_muxer"
2478 tgp_muxer_select="mov_muxer"
2479 vobsub_demuxer_select="mpegps_demuxer"
2480 w64_demuxer_select="wav_demuxer"
2481 w64_muxer_select="wav_muxer"
2482 wav_demuxer_select="riffdec"
2483 wav_muxer_select="riffenc"
2484 webm_muxer_select="riffenc"
2485 wtv_demuxer_select="riffdec"
2486 wtv_muxer_select="riffenc"
2487 xmv_demuxer_select="riffdec"
2488 xwma_demuxer_select="riffdec"
2489
2490 # indevs / outdevs
2491 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2492 alsa_outdev_deps="alsa_asoundlib_h"
2493 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2494 avfoundation_indev_select="avfoundation"
2495 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2496 caca_outdev_deps="libcaca"
2497 decklink_outdev_deps="decklink pthreads"
2498 decklink_outdev_extralibs="-lstdc++"
2499 decklink_indev_deps="decklink pthreads"
2500 decklink_indev_extralibs="-lstdc++"
2501 dshow_indev_deps="IBaseFilter"
2502 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2503 dv1394_indev_deps="dv1394"
2504 dv1394_indev_select="dv_demuxer"
2505 fbdev_indev_deps="linux_fb_h"
2506 fbdev_outdev_deps="linux_fb_h"
2507 gdigrab_indev_deps="CreateDIBSection"
2508 gdigrab_indev_extralibs="-lgdi32"
2509 gdigrab_indev_select="bmp_decoder"
2510 iec61883_indev_deps="libiec61883"
2511 jack_indev_deps="jack_jack_h sem_timedwait"
2512 lavfi_indev_deps="avfilter"
2513 libcdio_indev_deps="libcdio"
2514 libdc1394_indev_deps="libdc1394"
2515 libv4l2_indev_deps="libv4l2"
2516 openal_indev_deps="openal"
2517 opengl_outdev_deps="opengl"
2518 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2519 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2520 pulse_indev_deps="libpulse"
2521 pulse_outdev_deps="libpulse"
2522 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2523 qtkit_indev_select="qtkit"
2524 sdl_outdev_deps="sdl"
2525 sndio_indev_deps="sndio_h"
2526 sndio_outdev_deps="sndio_h"
2527 v4l_indev_deps="linux_videodev_h"
2528 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2529 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2530 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2531 vfwcap_indev_extralibs="-lavicap32"
2532 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2533 xv_outdev_extralibs="-lXv -lX11 -lXext"
2534 x11grab_indev_deps="x11grab"
2535 x11grab_xcb_indev_deps="libxcb"
2536
2537 # protocols
2538 bluray_protocol_deps="libbluray"
2539 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2540 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2541 ffrtmpcrypt_protocol_select="tcp_protocol"
2542 ffrtmphttp_protocol_deps="!librtmp_protocol"
2543 ffrtmphttp_protocol_select="http_protocol"
2544 ftp_protocol_select="tcp_protocol"
2545 gopher_protocol_select="network"
2546 http_protocol_select="tcp_protocol"
2547 httpproxy_protocol_select="tcp_protocol"
2548 https_protocol_select="tls_protocol"
2549 icecast_protocol_select="http_protocol"
2550 librtmp_protocol_deps="librtmp"
2551 librtmpe_protocol_deps="librtmp"
2552 librtmps_protocol_deps="librtmp"
2553 librtmpt_protocol_deps="librtmp"
2554 librtmpte_protocol_deps="librtmp"
2555 libsmbclient_protocol_deps="libsmbclient gplv3"
2556 libssh_protocol_deps="libssh"
2557 mmsh_protocol_select="http_protocol"
2558 mmst_protocol_select="network"
2559 rtmp_protocol_deps="!librtmp_protocol"
2560 rtmp_protocol_select="tcp_protocol"
2561 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2562 rtmps_protocol_deps="!librtmp_protocol"
2563 rtmps_protocol_select="tls_protocol"
2564 rtmpt_protocol_select="ffrtmphttp_protocol"
2565 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2566 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2567 rtp_protocol_select="udp_protocol"
2568 sctp_protocol_deps="struct_sctp_event_subscribe"
2569 sctp_protocol_select="network"
2570 srtp_protocol_select="rtp_protocol"
2571 tcp_protocol_select="network"
2572 tls_protocol_deps_any="openssl gnutls"
2573 tls_protocol_select="tcp_protocol"
2574 udp_protocol_select="network"
2575 udplite_protocol_select="network"
2576 unix_protocol_deps="sys_un_h"
2577 unix_protocol_select="network"
2578
2579 # filters
2580 amovie_filter_deps="avcodec avformat"
2581 aresample_filter_deps="swresample"
2582 ass_filter_deps="libass"
2583 asyncts_filter_deps="avresample"
2584 atempo_filter_deps="avcodec"
2585 atempo_filter_select="rdft"
2586 azmq_filter_deps="libzmq"
2587 blackframe_filter_deps="gpl"
2588 boxblur_filter_deps="gpl"
2589 bs2b_filter_deps="libbs2b"
2590 colormatrix_filter_deps="gpl"
2591 cropdetect_filter_deps="gpl"
2592 delogo_filter_deps="gpl"
2593 deshake_filter_select="pixelutils"
2594 drawtext_filter_deps="libfreetype"
2595 ebur128_filter_deps="gpl"
2596 eq_filter_deps="gpl"
2597 flite_filter_deps="libflite"
2598 frei0r_filter_deps="frei0r dlopen"
2599 frei0r_src_filter_deps="frei0r dlopen"
2600 fspp_filter_deps="gpl"
2601 geq_filter_deps="gpl"
2602 histeq_filter_deps="gpl"
2603 hqdn3d_filter_deps="gpl"
2604 interlace_filter_deps="gpl"
2605 kerndeint_filter_deps="gpl"
2606 ladspa_filter_deps="ladspa dlopen"
2607 mcdeint_filter_deps="avcodec gpl"
2608 movie_filter_deps="avcodec avformat"
2609 mpdecimate_filter_deps="gpl"
2610 mpdecimate_filter_select="pixelutils"
2611 mptestsrc_filter_deps="gpl"
2612 negate_filter_deps="lut_filter"
2613 perspective_filter_deps="gpl"
2614 pp7_filter_deps="gpl"
2615 ocv_filter_deps="libopencv"
2616 owdenoise_filter_deps="gpl"
2617 pan_filter_deps="swresample"
2618 phase_filter_deps="gpl"
2619 pp_filter_deps="gpl postproc"
2620 pullup_filter_deps="gpl"
2621 removelogo_filter_deps="avcodec avformat swscale"
2622 repeatfields_filter_deps="gpl"
2623 resample_filter_deps="avresample"
2624 sab_filter_deps="gpl swscale"
2625 scale_filter_deps="swscale"
2626 select_filter_select="pixelutils"
2627 smartblur_filter_deps="gpl swscale"
2628 showspectrum_filter_deps="avcodec"
2629 showspectrum_filter_select="rdft"
2630 spp_filter_deps="gpl avcodec"
2631 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2632 stereo3d_filter_deps="gpl"
2633 subtitles_filter_deps="avformat avcodec libass"
2634 super2xsai_filter_deps="gpl"
2635 tinterlace_filter_deps="gpl"
2636 vidstabdetect_filter_deps="libvidstab"
2637 vidstabtransform_filter_deps="libvidstab"
2638 pixfmts_super2xsai_test_deps="super2xsai_filter"
2639 tinterlace_merge_test_deps="tinterlace_filter"
2640 tinterlace_pad_test_deps="tinterlace_filter"
2641 uspp_filter_deps="gpl avcodec"
2642 zmq_filter_deps="libzmq"
2643 zoompan_filter_deps="swscale"
2644
2645 # examples
2646 avio_reading="avformat avcodec avutil"
2647 avcodec_example_deps="avcodec avutil"
2648 decoding_encoding_example_deps="avcodec avformat avutil"
2649 demuxing_decoding_example_deps="avcodec avformat avutil"
2650 extract_mvs_example_deps="avcodec avformat avutil"
2651 filter_audio_example_deps="avfilter avutil"
2652 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2653 filtering_video_example_deps="avfilter avcodec avformat avutil"
2654 metadata_example_deps="avformat avutil"
2655 muxing_example_deps="avcodec avformat avutil swscale"
2656 remuxing_example_deps="avcodec avformat avutil"
2657 resampling_audio_example_deps="avutil swresample"
2658 scaling_video_example_deps="avutil swscale"
2659 transcode_aac_example_deps="avcodec avformat swresample"
2660 transcoding_example_deps="avfilter avcodec avformat avutil"
2661
2662 # libraries, in linking order
2663 avcodec_deps="avutil"
2664 avdevice_deps="avformat avcodec avutil"
2665 avfilter_deps="avutil"
2666 avformat_deps="avcodec avutil"
2667 avresample_deps="avutil"
2668 postproc_deps="avutil gpl"
2669 swresample_deps="avutil"
2670 swscale_deps="avutil"
2671
2672 # programs
2673 ffmpeg_deps="avcodec avfilter avformat swresample"
2674 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2675                null_filter
2676                setpts_filter trim_filter"
2677 ffplay_deps="avcodec avformat swscale swresample sdl"
2678 ffplay_libs='$sdl_libs'
2679 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2680 ffprobe_deps="avcodec avformat"
2681 ffserver_deps="avformat fork sarestart"
2682 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2683
2684 # documentation
2685 podpages_deps="perl"
2686 manpages_deps="perl pod2man"
2687 htmlpages_deps="perl"
2688 htmlpages_deps_any="makeinfo_html texi2html"
2689 txtpages_deps="perl makeinfo"
2690 doc_deps_any="manpages htmlpages podpages txtpages"
2691
2692 # default parameters
2693
2694 logfile="config.log"
2695
2696 # installation paths
2697 prefix_default="/usr/local"
2698 bindir_default='${prefix}/bin'
2699 datadir_default='${prefix}/share/ffmpeg'
2700 docdir_default='${prefix}/share/doc/ffmpeg'
2701 incdir_default='${prefix}/include'
2702 libdir_default='${prefix}/lib'
2703 mandir_default='${prefix}/share/man'
2704
2705 # toolchain
2706 ar_default="ar"
2707 cc_default="gcc"
2708 cxx_default="g++"
2709 host_cc_default="gcc"
2710 cp_f="cp -f"
2711 doxygen_default="doxygen"
2712 install="install"
2713 ln_s="ln -s -f"
2714 nm_default="nm -g"
2715 objformat="elf"
2716 pkg_config_default=pkg-config
2717 if ranlib 2>&1 | grep -q "\-D "; then
2718     ranlib_default="ranlib -D"
2719 else
2720     ranlib_default="ranlib"
2721 fi
2722 strip_default="strip"
2723 yasmexe_default="yasm"
2724 windres_default="windres"
2725
2726 # OS
2727 target_os_default=$(tolower $(uname -s))
2728 host_os=$target_os_default
2729
2730 # machine
2731 if test "$target_os_default" = aix; then
2732     arch_default=$(uname -p)
2733     strip_default="strip -X32_64"
2734 else
2735     arch_default=$(uname -m)
2736 fi
2737 cpu="generic"
2738 intrinsics="none"
2739
2740 # configurable options
2741 enable $PROGRAM_LIST
2742 enable $DOCUMENT_LIST
2743 enable $EXAMPLE_LIST
2744 enable $(filter_out avresample $LIBRARY_LIST)
2745 enable stripping
2746
2747 enable asm
2748 enable debug
2749 enable doc
2750 enable faan faandct faanidct
2751 enable optimizations
2752 enable runtime_cpudetect
2753 enable safe_bitstream_reader
2754 enable static
2755 enable swscale_alpha
2756
2757 sws_max_filter_size_default=256
2758 set_default sws_max_filter_size
2759
2760 # Enable hwaccels by default.
2761 enable dxva2 vaapi vda vdpau xvmc
2762 enable xlib
2763
2764 # build settings
2765 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2766 LIBPREF="lib"
2767 LIBSUF=".a"
2768 FULLNAME='$(NAME)$(BUILDSUF)'
2769 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2770 SLIBPREF="lib"
2771 SLIBSUF=".so"
2772 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2773 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2774 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2775 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2776 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2777 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2778
2779 asflags_filter=echo
2780 cflags_filter=echo
2781 ldflags_filter=echo
2782
2783 AS_C='-c'
2784 AS_O='-o $@'
2785 CC_C='-c'
2786 CC_E='-E -o $@'
2787 CC_O='-o $@'
2788 CXX_C='-c'
2789 CXX_O='-o $@'
2790 LD_O='-o $@'
2791 LD_LIB='-l%'
2792 LD_PATH='-L'
2793 HOSTCC_C='-c'
2794 HOSTCC_E='-E -o $@'
2795 HOSTCC_O='-o $@'
2796 HOSTLD_O='-o $@'
2797
2798 host_libs='-lm'
2799 host_cflags_filter=echo
2800 host_ldflags_filter=echo
2801
2802 target_path='$(CURDIR)'
2803
2804 # since the object filename is not given with the -MM flag, the compiler
2805 # is only able to print the basename, and we must add the path ourselves
2806 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2807 DEPFLAGS='-MM'
2808
2809 # find source path
2810 if test -f configure; then
2811     source_path=.
2812 else
2813     source_path=$(cd $(dirname "$0"); pwd)
2814     echo "$source_path" | grep -q '[[:blank:]]' &&
2815         die "Out of tree builds are impossible with whitespace in source path."
2816     test -e "$source_path/config.h" &&
2817         die "Out of tree builds are impossible with config.h in source dir."
2818 fi
2819
2820 for v in "$@"; do
2821     r=${v#*=}
2822     l=${v%"$r"}
2823     r=$(sh_quote "$r")
2824     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2825 done
2826
2827 find_things(){
2828     thing=$1
2829     pattern=$2
2830     file=$source_path/$3
2831     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2832 }
2833
2834 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2835 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2836 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2837 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2838 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2839 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2840 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2841 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2842 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2843 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2844 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2845
2846 ALL_COMPONENTS="
2847     $BSF_LIST
2848     $DECODER_LIST
2849     $DEMUXER_LIST
2850     $ENCODER_LIST
2851     $FILTER_LIST
2852     $HWACCEL_LIST
2853     $INDEV_LIST
2854     $MUXER_LIST
2855     $OUTDEV_LIST
2856     $PARSER_LIST
2857     $PROTOCOL_LIST
2858 "
2859
2860 for n in $COMPONENT_LIST; do
2861     v=$(toupper ${n%s})_LIST
2862     eval enable \$$v
2863     eval ${n}_if_any="\$$v"
2864 done
2865
2866 enable $ARCH_EXT_LIST
2867
2868 die_unknown(){
2869     echo "Unknown option \"$1\"."
2870     echo "See $0 --help for available options."
2871     exit 1
2872 }
2873
2874 print_3_columns() {
2875     cat | tr ' ' '\n' | sort | pr -r -3 -t
2876 }
2877
2878 show_list() {
2879     suffix=_$1
2880     shift
2881     echo $* | sed s/$suffix//g | print_3_columns
2882     exit 0
2883 }
2884
2885 rand_list(){
2886     IFS=', '
2887     set -- $*
2888     unset IFS
2889     for thing; do
2890         comp=${thing%:*}
2891         prob=${thing#$comp}
2892         prob=${prob#:}
2893         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2894         echo "prob ${prob:-0.5}"
2895         printf '%s\n' $comp
2896     done
2897 }
2898
2899 do_random(){
2900     action=$1
2901     shift
2902     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2903     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2904 }
2905
2906 for opt do
2907     optval="${opt#*=}"
2908     case "$opt" in
2909         --extra-ldflags=*)
2910             add_ldflags $optval
2911         ;;
2912         --extra-ldexeflags=*)
2913             add_ldexeflags $optval
2914         ;;
2915         --extra-libs=*)
2916             add_extralibs $optval
2917         ;;
2918         --disable-devices)
2919             disable $INDEV_LIST $OUTDEV_LIST
2920         ;;
2921         --enable-debug=*)
2922             debuglevel="$optval"
2923         ;;
2924         --disable-programs)
2925             disable $PROGRAM_LIST
2926         ;;
2927         --disable-everything)
2928             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2929         ;;
2930         --disable-all)
2931             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2932             disable $LIBRARY_LIST $PROGRAM_LIST doc
2933         ;;
2934         --enable-random|--disable-random)
2935             action=${opt%%-random}
2936             do_random ${action#--} $COMPONENT_LIST
2937         ;;
2938         --enable-random=*|--disable-random=*)
2939             action=${opt%%-random=*}
2940             do_random ${action#--} $optval
2941         ;;
2942         --enable-*=*|--disable-*=*)
2943             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2944             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2945             eval list=\$$(toupper $thing)_LIST
2946             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2947             list=$(filter "$name" $list)
2948             [ "$list" = "" ] && warn "Option $opt did not match anything"
2949             $action $list
2950         ;;
2951         --enable-?*|--disable-?*)
2952             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2953             if is_in $option $COMPONENT_LIST; then
2954                 test $action = disable && action=unset
2955                 eval $action \$$(toupper ${option%s})_LIST
2956             elif is_in $option $CMDLINE_SELECT; then
2957                 $action $option
2958             else
2959                 die_unknown $opt
2960             fi
2961         ;;
2962         --list-*)
2963             NAME="${opt#--list-}"
2964             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2965             NAME=${NAME%s}
2966             eval show_list $NAME \$$(toupper $NAME)_LIST
2967         ;;
2968         --help|-h) show_help
2969         ;;
2970         --fatal-warnings) enable fatal_warnings
2971         ;;
2972         *)
2973             optname="${opt%%=*}"
2974             optname="${optname#--}"
2975             optname=$(echo "$optname" | sed 's/-/_/g')
2976             if is_in $optname $CMDLINE_SET; then
2977                 eval $optname='$optval'
2978             elif is_in $optname $CMDLINE_APPEND; then
2979                 append $optname "$optval"
2980             else
2981                 die_unknown $opt
2982             fi
2983         ;;
2984     esac
2985 done
2986
2987 disabled logging && logfile=/dev/null
2988
2989 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2990 set >> $logfile
2991
2992 test -n "$cross_prefix" && enable cross_compile
2993
2994 if enabled cross_compile; then
2995     test -n "$arch" && test -n "$target_os" ||
2996         die "Must specify target arch and OS when cross-compiling"
2997 fi
2998
2999 ar_default="${cross_prefix}${ar_default}"
3000 cc_default="${cross_prefix}${cc_default}"
3001 cxx_default="${cross_prefix}${cxx_default}"
3002 nm_default="${cross_prefix}${nm_default}"
3003 pkg_config_default="${cross_prefix}${pkg_config_default}"
3004 ranlib_default="${cross_prefix}${ranlib_default}"
3005 strip_default="${cross_prefix}${strip_default}"
3006 windres_default="${cross_prefix}${windres_default}"
3007
3008 sysinclude_default="${sysroot}/usr/include"
3009
3010 test -n "$valgrind" && toolchain="valgrind-memcheck"
3011
3012 case "$toolchain" in
3013     clang-asan)
3014         cc_default="clang"
3015         add_cflags  -fsanitize=address
3016         add_ldflags -fsanitize=address
3017     ;;
3018     clang-tsan)
3019         cc_default="clang"
3020         add_cflags  -fsanitize=thread -pie
3021         add_ldflags -fsanitize=thread -pie
3022     ;;
3023     clang-usan)
3024         cc_default="clang"
3025         add_cflags  -fsanitize=undefined
3026         add_ldflags -fsanitize=undefined
3027     ;;
3028     gcc-asan)
3029         cc_default="gcc"
3030         add_cflags  -fsanitize=address
3031         add_ldflags -fsanitize=address
3032     ;;
3033     gcc-tsan)
3034         cc_default="gcc"
3035         add_cflags  -fsanitize=thread -pie -fPIC
3036         add_ldflags -fsanitize=thread -pie -fPIC
3037     ;;
3038     gcc-usan)
3039         cc_default="gcc"
3040         add_cflags  -fsanitize=undefined
3041         add_ldflags -fsanitize=undefined
3042     ;;
3043     valgrind-massif)
3044         target_exec_default=${valgrind:-"valgrind"}
3045         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"
3046     ;;
3047     valgrind-memcheck)
3048         target_exec_default=${valgrind:-"valgrind"}
3049         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3050     ;;
3051     msvc)
3052         # Check whether the current MSVC version needs the C99 converter.
3053         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3054         # support enough of C99 to build ffmpeg. Default to the new
3055         # behaviour if the regexp was unable to match anything, since this
3056         # successfully parses the version number of existing supported
3057         # versions that require the converter (MSVC 2010 and 2012).
3058         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3059         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3060             cc_default="cl"
3061         else
3062             cc_default="c99wrap cl"
3063         fi
3064         ld_default="link"
3065         nm_default="dumpbin -symbols"
3066         ar_default="lib"
3067         target_os_default="win32"
3068         # Use a relative path for TMPDIR. This makes sure all the
3069         # ffconf temp files are written with a relative path, avoiding
3070         # issues with msys/win32 path conversion for MSVC parameters
3071         # such as -Fo<file> or -out:<file>.
3072         TMPDIR=.
3073     ;;
3074     icl)
3075         cc_default="icl"
3076         ld_default="xilink"
3077         nm_default="dumpbin -symbols"
3078         ar_default="xilib"
3079         target_os_default="win32"
3080         TMPDIR=.
3081     ;;
3082     gcov)
3083         add_cflags  -fprofile-arcs -ftest-coverage
3084         add_ldflags -fprofile-arcs -ftest-coverage
3085     ;;
3086     hardened)
3087         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3088         add_cflags   -fno-strict-overflow -fstack-protector-all
3089         add_ldflags  -Wl,-z,relro -Wl,-z,now
3090     ;;
3091     ?*)
3092         die "Unknown toolchain $toolchain"
3093     ;;
3094 esac
3095
3096 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3097     target_exec target_os yasmexe
3098 enabled cross_compile || host_cc_default=$cc
3099 set_default host_cc
3100
3101 pkg_config_fail_message=""
3102 if ! $pkg_config --version >/dev/null 2>&1; then
3103     warn "$pkg_config not found, library detection may fail."
3104     pkg_config=false
3105 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3106     pkg_config_fail_message="
3107 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3108 fi
3109
3110 if test $doxygen != $doxygen_default && \
3111   ! $doxygen --version >/dev/null 2>&1; then
3112     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3113 fi
3114
3115 exesuf() {
3116     case $1 in
3117         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3118     esac
3119 }
3120
3121 EXESUF=$(exesuf $target_os)
3122 HOSTEXESUF=$(exesuf $host_os)
3123
3124 # set temporary file name
3125 : ${TMPDIR:=$TEMPDIR}
3126 : ${TMPDIR:=$TMP}
3127 : ${TMPDIR:=/tmp}
3128
3129 if [ -n "$tempprefix" ] ; then
3130     mktemp(){
3131         echo $tempprefix.${HOSTNAME}.${UID}
3132     }
3133 elif ! check_cmd mktemp -u XXXXXX; then
3134     # simple replacement for missing mktemp
3135     # NOT SAFE FOR GENERAL USE
3136     mktemp(){
3137         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3138     }
3139 fi
3140
3141 tmpfile(){
3142     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3143         (set -C; exec > $tmp) 2>/dev/null ||
3144         die "Unable to create temporary file in $TMPDIR."
3145     append TMPFILES $tmp
3146     eval $1=$tmp
3147 }
3148
3149 trap 'rm -f -- $TMPFILES' EXIT
3150
3151 tmpfile TMPASM .asm
3152 tmpfile TMPC   .c
3153 tmpfile TMPCPP .cpp
3154 tmpfile TMPE   $EXESUF
3155 tmpfile TMPH   .h
3156 tmpfile TMPM   .m
3157 tmpfile TMPO   .o
3158 tmpfile TMPS   .S
3159 tmpfile TMPSH  .sh
3160 tmpfile TMPV   .ver
3161
3162 unset -f mktemp
3163
3164 chmod +x $TMPE
3165
3166 # make sure we can execute files in $TMPDIR
3167 cat > $TMPSH 2>> $logfile <<EOF
3168 #! /bin/sh
3169 EOF
3170 chmod +x $TMPSH >> $logfile 2>&1
3171 if ! $TMPSH >> $logfile 2>&1; then
3172     cat <<EOF
3173 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3174 variable to another directory and make sure that it is not mounted noexec.
3175 EOF
3176     die "Sanity test failed."
3177 fi
3178
3179 armasm_flags(){
3180     for flag; do
3181         case $flag in
3182             # Filter out MSVC cl.exe options from cflags that shouldn't
3183             # be passed to gas-preprocessor
3184             -M[TD]*)                                            ;;
3185             *)                  echo $flag                      ;;
3186         esac
3187    done
3188 }
3189
3190 ccc_flags(){
3191     for flag; do
3192         case $flag in
3193             -std=c99)           echo -c99                       ;;
3194             -mcpu=*)            echo -arch ${flag#*=}           ;;
3195             -mieee)             echo -ieee                      ;;
3196             -O*|-fast)          echo $flag                      ;;
3197             -fno-math-errno)    echo -assume nomath_errno       ;;
3198             -g)                 echo -g3                        ;;
3199             -Wall)              echo -msg_enable level2         ;;
3200             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3201             -Wl,*)              echo $flag                      ;;
3202             -f*|-W*)                                            ;;
3203             *)                  echo $flag                      ;;
3204         esac
3205    done
3206 }
3207
3208 cparser_flags(){
3209     for flag; do
3210         case $flag in
3211             -Wno-switch)             echo -Wno-switch-enum ;;
3212             -Wno-format-zero-length) ;;
3213             -Wdisabled-optimization) ;;
3214             -Wno-pointer-sign)       echo -Wno-other ;;
3215             *)                       echo $flag ;;
3216         esac
3217     done
3218 }
3219
3220 msvc_common_flags(){
3221     for flag; do
3222         case $flag in
3223             # In addition to specifying certain flags under the compiler
3224             # specific filters, they must be specified here as well or else the
3225             # generic catch all at the bottom will print the original flag.
3226             -Wall)                ;;
3227             -std=c99)             ;;
3228             # Common flags
3229             -fomit-frame-pointer) ;;
3230             -g)                   echo -Z7 ;;
3231             -fno-math-errno)      ;;
3232             -fno-common)          ;;
3233             -fno-signed-zeros)    ;;
3234             -fPIC)                ;;
3235             -mthumb)              ;;
3236             -march=*)             ;;
3237             -lz)                  echo zlib.lib ;;
3238             -lavifil32)           echo vfw32.lib ;;
3239             -lavicap32)           echo vfw32.lib user32.lib ;;
3240             -l*)                  echo ${flag#-l}.lib ;;
3241             -L*)                  echo -libpath:${flag#-L} ;;
3242             *)                    echo $flag ;;
3243         esac
3244     done
3245 }
3246
3247 msvc_flags(){
3248     msvc_common_flags "$@"
3249     for flag; do
3250         case $flag in
3251             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3252                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3253                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3254                                        -wd4554 \
3255                                        -wd4273 -wd4701 ;;
3256         esac
3257     done
3258 }
3259
3260 icl_flags(){
3261     msvc_common_flags "$@"
3262     for flag; do
3263         case $flag in
3264             # Despite what Intel's documentation says -Wall, which is supported
3265             # on Windows, does enable remarks so disable them here.
3266             -Wall)                echo $flag -Qdiag-disable:remark ;;
3267             -std=c99)             echo -Qstd=c99 ;;
3268             -flto)                echo -ipo ;;
3269         esac
3270     done
3271 }
3272
3273 icc_flags(){
3274     for flag; do
3275         case $flag in
3276             -flto)                echo -ipo ;;
3277             *)                    echo $flag ;;
3278         esac
3279     done
3280 }
3281
3282 pgi_flags(){
3283     for flag; do
3284         case $flag in
3285             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3286             -fomit-frame-pointer) echo -Mnoframe ;;
3287             -g)                   echo -gopt ;;
3288             *)                    echo $flag ;;
3289         esac
3290     done
3291 }
3292
3293 suncc_flags(){
3294     for flag; do
3295         case $flag in
3296             -march=*|-mcpu=*)
3297                 case "${flag#*=}" in
3298                     native)                   echo -xtarget=native       ;;
3299                     v9|niagara)               echo -xarch=sparc          ;;
3300                     ultrasparc)               echo -xarch=sparcvis       ;;
3301                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3302                     i586|pentium)             echo -xchip=pentium        ;;
3303                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3304                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3305                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3306                     pentium4*)          echo -xtarget=pentium4           ;;
3307                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3308                     *-sse3)             echo -xarch=sse3                 ;;
3309                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3310                     bonnell)                   echo -xarch=ssse3         ;;
3311                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3312                     westmere)                  echo -xtarget=westmere    ;;
3313                     silvermont)                echo -xarch=sse4_2        ;;
3314                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3315                     core-avx*|ivybridge|haswell|broadwell)
3316                                                echo -xarch=avx           ;;
3317                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3318                     btver1)                    echo -xarch=amdsse4a      ;;
3319                     btver2|bdver*)             echo -xarch=avx           ;;
3320                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3321                     k8|opteron|athlon64|athlon-fx)
3322                                                echo -xarch=sse2a         ;;
3323                     athlon*)                   echo -xarch=pentium_proa  ;;
3324                 esac
3325                 ;;
3326             -std=c99)             echo -xc99              ;;
3327             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3328             -fPIC)                echo -KPIC -xcode=pic32 ;;
3329             -W*,*)                echo $flag              ;;
3330             -f*-*|-W*|-mimpure-text)                      ;;
3331             -shared)              echo -G                 ;;
3332             *)                    echo $flag              ;;
3333         esac
3334     done
3335 }
3336
3337 tms470_flags(){
3338     for flag; do
3339         case $flag in
3340             -march=*|-mcpu=*)
3341                 case "${flag#*=}" in
3342                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3343                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3344                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3345                     armv6*|arm11*)          echo -mv=6   ;;
3346                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3347                                             echo -mv=5e  ;;
3348                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3349                 esac
3350                 ;;
3351             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3352             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3353             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3354             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3355             -msoft-float)   echo --float_support=vfplib       ;;
3356             -O[0-3]|-mf=*)  echo $flag                        ;;
3357             -g)             echo -g -mn                       ;;
3358             -pds=*)         echo $flag                        ;;
3359             -D*|-I*)        echo $flag                        ;;
3360             --gcc|--abi=*)  echo $flag                        ;;
3361             -me)            echo $flag                        ;;
3362         esac
3363     done
3364 }
3365
3366 probe_cc(){
3367     pfx=$1
3368     _cc=$2
3369
3370     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3371     unset _ld_o _ldflags _ld_lib _ld_path
3372     unset _depflags _DEPCMD _DEPFLAGS
3373     _flags_filter=echo
3374
3375     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3376         true # no-op to avoid reading stdin in following checks
3377     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3378         _type=llvm_gcc
3379         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3380         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3381         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3382         _cflags_speed='-O3'
3383         _cflags_size='-Os'
3384     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3385         _type=gcc
3386         gcc_version=$($_cc --version | head -n1)
3387         gcc_basever=$($_cc -dumpversion)
3388         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3389         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3390         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3391         if ! $_cc -dumpversion | grep -q '^2\.'; then
3392             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3393         fi
3394         _cflags_speed='-O3'
3395         _cflags_size='-Os'
3396     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3397         _type=icc
3398         _ident=$($_cc --version | head -n1)
3399         _depflags='-MMD'
3400         _cflags_speed='-O3'
3401         _cflags_size='-Os'
3402         _cflags_noopt='-O1'
3403         _flags_filter=icc_flags
3404     elif $_cc -v 2>&1 | grep -q xlc; then
3405         _type=xlc
3406         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3407         _cflags_speed='-O5'
3408         _cflags_size='-O5 -qcompact'
3409     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3410         _type=ccc
3411         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3412         _DEPFLAGS='-M'
3413         _cflags_speed='-fast'
3414         _cflags_size='-O1'
3415         _flags_filter=ccc_flags
3416     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3417         test -d "$sysroot" || die "No valid sysroot specified."
3418         _type=armcc
3419         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3420         armcc_conf="$PWD/armcc.conf"
3421         $_cc --arm_linux_configure                 \
3422              --arm_linux_config_file="$armcc_conf" \
3423              --configure_sysroot="$sysroot"        \
3424              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3425              die "Error creating armcc configuration file."
3426         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3427         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3428         as_default="${cross_prefix}gcc"
3429         _depflags='-MMD'
3430         _cflags_speed='-O3'
3431         _cflags_size='-Os'
3432     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3433         _type=tms470
3434         _ident=$($_cc -version | head -n1 | tr -s ' ')
3435         _flags='--gcc --abi=eabi -me'
3436         _cc_e='-ppl -fe=$@'
3437         _cc_o='-fe=$@'
3438         _depflags='-ppa -ppd=$(@:.o=.d)'
3439         _cflags_speed='-O3 -mf=5'
3440         _cflags_size='-O3 -mf=2'
3441         _flags_filter=tms470_flags
3442     elif $_cc -v 2>&1 | grep -q clang; then
3443         _type=clang
3444         _ident=$($_cc --version | head -n1)
3445         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3446         _cflags_speed='-O3'
3447         _cflags_size='-Os'
3448     elif $_cc -V 2>&1 | grep -q Sun; then
3449         _type=suncc
3450         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3451         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3452         _DEPFLAGS='-xM1 -xc99'
3453         _ldflags='-std=c99'
3454         _cflags_speed='-O5'
3455         _cflags_size='-O5 -xspace'
3456         _flags_filter=suncc_flags
3457     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3458         _type=pathscale
3459         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3460         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3461         _cflags_speed='-O2'
3462         _cflags_size='-Os'
3463         _flags_filter='filter_out -Wdisabled-optimization'
3464     elif $_cc -v 2>&1 | grep -q Open64; then
3465         _type=open64
3466         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3467         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3468         _cflags_speed='-O2'
3469         _cflags_size='-Os'
3470         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3471     elif $_cc -V 2>&1 | grep -q Portland; then
3472         _type=pgi
3473         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3474         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3475         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3476         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3477         _cflags_noopt="-O"
3478         _flags_filter=pgi_flags
3479     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3480         _type=armasm
3481         _ident=$($_cc | head -n1)
3482         # 4509: "This form of conditional instruction is deprecated"
3483         _flags="-nologo -ignore 4509"
3484         _flags_filter=armasm_flags
3485     elif $_cc 2>&1 | grep -q Intel; then
3486         _type=icl
3487         _ident=$($cc 2>&1 | head -n1)
3488         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3489         # Not only is O3 broken on 13.x+ but it is slower on all previous
3490         # versions (tested) as well.
3491         _cflags_speed="-O2"
3492         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3493         if $_cc 2>&1 | grep -q Linker; then
3494             _ld_o='-out:$@'
3495         else
3496             _ld_o='-Fe$@'
3497         fi
3498         _cc_o='-Fo$@'
3499         _cc_e='-P'
3500         _flags_filter=icl_flags
3501         _ld_lib='lib%.a'
3502         _ld_path='-libpath:'
3503         # -Qdiag-error to make icl error when seeing certain unknown arguments
3504         _flags='-nologo -Qdiag-error:4044,10157'
3505         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3506         # with MSVC which enables it by default.
3507         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3508         if [ $pfx = hostcc ]; then
3509             append _cflags -Dsnprintf=_snprintf
3510         fi
3511         disable stripping
3512     elif $_cc 2>&1 | grep -q Microsoft; then
3513         _type=msvc
3514         _ident=$($cc 2>&1 | head -n1)
3515         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3516         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3517         _cflags_speed="-O2"
3518         _cflags_size="-O1"
3519         if $_cc 2>&1 | grep -q Linker; then
3520             _ld_o='-out:$@'
3521         else
3522             _ld_o='-Fe$@'
3523         fi
3524         _cc_o='-Fo$@'
3525         _cc_e='-P -Fi$@'
3526         _flags_filter=msvc_flags
3527         _ld_lib='lib%.a'
3528         _ld_path='-libpath:'
3529         _flags='-nologo'
3530         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3531         if [ $pfx = hostcc ]; then
3532             append _cflags -Dsnprintf=_snprintf
3533         fi
3534         disable stripping
3535     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3536         _type=cparser
3537         _ident=$($_cc --version | head -n1)
3538         _depflags='-MMD'
3539         _cflags_speed='-O4'
3540         _cflags_size='-O2'
3541         _flags_filter=cparser_flags
3542     fi
3543
3544     eval ${pfx}_type=\$_type
3545     eval ${pfx}_ident=\$_ident
3546 }
3547
3548 set_ccvars(){
3549     eval ${1}_C=\${_cc_c-\${${1}_C}}
3550     eval ${1}_E=\${_cc_e-\${${1}_E}}
3551     eval ${1}_O=\${_cc_o-\${${1}_O}}
3552
3553     if [ -n "$_depflags" ]; then
3554         eval ${1}_DEPFLAGS=\$_depflags
3555     else
3556         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3557         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3558         eval DEP${1}FLAGS=\$_flags
3559     fi
3560 }
3561
3562 probe_cc cc "$cc"
3563 cflags_filter=$_flags_filter
3564 cflags_speed=$_cflags_speed
3565 cflags_size=$_cflags_size
3566 cflags_noopt=$_cflags_noopt
3567 add_cflags $_flags $_cflags
3568 cc_ldflags=$_ldflags
3569 set_ccvars CC
3570
3571 probe_cc hostcc "$host_cc"
3572 host_cflags_filter=$_flags_filter
3573 add_host_cflags  $_flags $_cflags
3574 set_ccvars HOSTCC
3575
3576 test -n "$cc_type" && enable $cc_type ||
3577     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3578
3579 : ${as_default:=$cc}
3580 : ${dep_cc_default:=$cc}
3581 : ${ld_default:=$cc}
3582 : ${host_ld_default:=$host_cc}
3583 set_default ar as dep_cc ld host_ld windres
3584
3585 probe_cc as "$as"
3586 asflags_filter=$_flags_filter
3587 add_asflags $_flags $_cflags
3588 set_ccvars AS
3589
3590 probe_cc ld "$ld"
3591 ldflags_filter=$_flags_filter
3592 add_ldflags $_flags $_ldflags
3593 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3594 LD_O=${_ld_o-$LD_O}
3595 LD_LIB=${_ld_lib-$LD_LIB}
3596 LD_PATH=${_ld_path-$LD_PATH}
3597
3598 probe_cc hostld "$host_ld"
3599 host_ldflags_filter=$_flags_filter
3600 add_host_ldflags $_flags $_ldflags
3601 HOSTLD_O=${_ld_o-$HOSTLD_O}
3602
3603 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3604     probe_cc depcc "$dep_cc"
3605     CCDEP=${_DEPCMD:-$DEPCMD}
3606     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3607     DEPCCFLAGS=$_flags
3608 fi
3609
3610 if $ar 2>&1 | grep -q Microsoft; then
3611     arflags="-nologo"
3612     ar_o='-out:$@'
3613 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3614     arflags="rq"
3615     ar_o='$@'
3616 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3617     arflags='-Xany -r -c'
3618     ar_o='$@'
3619 elif $ar 2>&1 | grep -q "\[D\] "; then
3620     arflags="rcD"
3621     ar_o='$@'
3622 else
3623     arflags="rc"
3624     ar_o='$@'
3625 fi
3626
3627 add_cflags $extra_cflags
3628 add_cxxflags $extra_cxxflags
3629 add_asflags $extra_cflags
3630
3631 if test -n "$sysroot"; then
3632     case "$cc_type" in
3633         gcc|llvm_gcc|clang)
3634             add_cppflags --sysroot="$sysroot"
3635             add_ldflags --sysroot="$sysroot"
3636 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3637             add_cppflags -isysroot "$sysroot"
3638             add_ldflags -isysroot "$sysroot"
3639         ;;
3640         tms470)
3641             add_cppflags -I"$sysinclude"
3642             add_ldflags  --sysroot="$sysroot"
3643         ;;
3644     esac
3645 fi
3646
3647 if test "$cpu" = host; then
3648     enabled cross_compile &&
3649         die "--cpu=host makes no sense when cross-compiling."
3650
3651     case "$cc_type" in
3652         gcc|llvm_gcc)
3653             check_native(){
3654                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3655                 sed -n "/cc1.*$1=/{
3656                             s/.*$1=\\([^ ]*\\).*/\\1/
3657                             p
3658                             q
3659                         }" $TMPE
3660             }
3661             cpu=$(check_native -march || check_native -mcpu)
3662         ;;
3663     esac
3664
3665     test "${cpu:-host}" = host &&
3666         die "--cpu=host not supported with compiler $cc"
3667 fi
3668
3669 # Deal with common $arch aliases
3670 case "$arch" in
3671     aarch64|arm64)
3672         arch="aarch64"
3673     ;;
3674     arm*|iPad*|iPhone*)
3675         arch="arm"
3676     ;;
3677     mips*|IP*)
3678         arch="mips"
3679     ;;
3680     parisc*|hppa*)
3681         arch="parisc"
3682     ;;
3683     "Power Macintosh"|ppc*|powerpc*)
3684         arch="ppc"
3685     ;;
3686     s390|s390x)
3687         arch="s390"
3688     ;;
3689     sh4|sh)
3690         arch="sh4"
3691     ;;
3692     sun4u|sparc*)
3693         arch="sparc"
3694     ;;
3695     tilegx|tile-gx)
3696         arch="tilegx"
3697     ;;
3698     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3699         arch="x86"
3700     ;;
3701 esac
3702
3703 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3704 enable $arch
3705
3706 # Add processor-specific flags
3707 if enabled aarch64; then
3708
3709     case $cpu in
3710         armv*)
3711             cpuflags="-march=$cpu"
3712         ;;
3713         *)
3714             cpuflags="-mcpu=$cpu"
3715         ;;
3716     esac
3717
3718 elif enabled alpha; then
3719
3720     cpuflags="-mcpu=$cpu"
3721
3722 elif enabled arm; then
3723
3724     check_arm_arch() {
3725         check_cpp_condition stddef.h \
3726             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3727             $cpuflags
3728     }
3729
3730     probe_arm_arch() {
3731         if   check_arm_arch 4;        then echo armv4;
3732         elif check_arm_arch 4T;       then echo armv4t;
3733         elif check_arm_arch 5;        then echo armv5;
3734         elif check_arm_arch 5E;       then echo armv5e;
3735         elif check_arm_arch 5T;       then echo armv5t;
3736         elif check_arm_arch 5TE;      then echo armv5te;
3737         elif check_arm_arch 5TEJ;     then echo armv5te;
3738         elif check_arm_arch 6;        then echo armv6;
3739         elif check_arm_arch 6J;       then echo armv6j;
3740         elif check_arm_arch 6K;       then echo armv6k;
3741         elif check_arm_arch 6Z;       then echo armv6z;
3742         elif check_arm_arch 6ZK;      then echo armv6zk;
3743         elif check_arm_arch 6T2;      then echo armv6t2;
3744         elif check_arm_arch 7;        then echo armv7;
3745         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3746         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3747         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3748         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3749         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3750         fi
3751     }
3752
3753     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3754
3755     case $cpu in
3756         armv*)
3757             cpuflags="-march=$cpu"
3758             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3759         ;;
3760         *)
3761             cpuflags="-mcpu=$cpu"
3762             case $cpu in
3763                 cortex-a*)                               subarch=armv7a  ;;
3764                 cortex-r*)                               subarch=armv7r  ;;
3765                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3766                 arm11*)                                  subarch=armv6   ;;
3767                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3768                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3769                 *)                             subarch=$(probe_arm_arch) ;;
3770             esac
3771         ;;
3772     esac
3773
3774     case "$subarch" in
3775         armv5t*)    enable fast_clz                ;;
3776         armv[6-8]*)
3777             enable fast_clz
3778             disabled fast_unaligned || enable fast_unaligned
3779             ;;
3780     esac
3781
3782 elif enabled avr32; then
3783
3784     case $cpu in
3785         ap7[02]0[0-2])
3786             subarch="avr32_ap"
3787             cpuflags="-mpart=$cpu"
3788         ;;
3789         ap)
3790             subarch="avr32_ap"
3791             cpuflags="-march=$cpu"
3792         ;;
3793         uc3[ab]*)
3794             subarch="avr32_uc"
3795             cpuflags="-mcpu=$cpu"
3796         ;;
3797         uc)
3798             subarch="avr32_uc"
3799             cpuflags="-march=$cpu"
3800         ;;
3801     esac
3802
3803 elif enabled bfin; then
3804
3805     cpuflags="-mcpu=$cpu"
3806
3807 elif enabled mips; then
3808
3809     cpuflags="-march=$cpu"
3810
3811     case $cpu in
3812         24kc)
3813             disable mipsfpu
3814             disable mipsdspr1
3815             disable mipsdspr2
3816         ;;
3817         24kf*)
3818             disable mipsdspr1
3819             disable mipsdspr2
3820         ;;
3821         24kec|34kc|1004kc)
3822             disable mipsfpu
3823             disable mipsdspr2
3824         ;;
3825         24kef*|34kf*|1004kf*)
3826             disable mipsdspr2
3827         ;;
3828         74kc)
3829             disable mipsfpu
3830         ;;
3831     esac
3832
3833 elif enabled ppc; then
3834
3835     disable ldbrx
3836     disable vsx
3837
3838     case $(tolower $cpu) in
3839         601|ppc601|powerpc601)
3840             cpuflags="-mcpu=601"
3841             disable altivec
3842         ;;
3843         603*|ppc603*|powerpc603*)
3844             cpuflags="-mcpu=603"
3845             disable altivec
3846         ;;
3847         604*|ppc604*|powerpc604*)
3848             cpuflags="-mcpu=604"
3849             disable altivec
3850         ;;
3851         g3|75*|ppc75*|powerpc75*)
3852             cpuflags="-mcpu=750"
3853             disable altivec
3854         ;;
3855         g4|745*|ppc745*|powerpc745*)
3856             cpuflags="-mcpu=7450"
3857         ;;
3858         74*|ppc74*|powerpc74*)
3859             cpuflags="-mcpu=7400"
3860         ;;
3861         g5|970|ppc970|powerpc970)
3862             cpuflags="-mcpu=970"
3863         ;;
3864         power[3-8]*)
3865             cpuflags="-mcpu=$cpu"
3866         ;;
3867         cell)
3868             cpuflags="-mcpu=cell"
3869             enable ldbrx
3870         ;;
3871         e500mc)
3872             cpuflags="-mcpu=e500mc"
3873             disable altivec
3874         ;;
3875         e500v2)
3876             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3877             disable altivec
3878             disable dcbzl
3879         ;;
3880         e500)
3881             cpuflags="-mcpu=8540 -mhard-float"
3882             disable altivec
3883             disable dcbzl
3884         ;;
3885     esac
3886
3887 elif enabled sparc; then
3888
3889     case $cpu in
3890         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3891             cpuflags="-mcpu=$cpu"
3892         ;;
3893         ultrasparc*|niagara[234])
3894             cpuflags="-mcpu=$cpu"
3895         ;;
3896     esac
3897
3898 elif enabled x86; then
3899
3900     case $cpu in
3901         i[345]86|pentium)
3902             cpuflags="-march=$cpu"
3903             disable i686
3904             disable mmx
3905         ;;
3906         # targets that do NOT support nopl and conditional mov (cmov)
3907         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3908             cpuflags="-march=$cpu"
3909             disable i686
3910         ;;
3911         # targets that do support nopl and conditional mov (cmov)
3912         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3913         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3914             cpuflags="-march=$cpu"
3915             enable i686
3916             enable fast_cmov
3917         ;;
3918         # targets that do support conditional mov but on which it's slow
3919         pentium4|pentium4m|prescott|nocona)
3920             cpuflags="-march=$cpu"
3921             enable i686
3922             disable fast_cmov
3923         ;;
3924     esac
3925
3926 fi
3927
3928 if [ "$cpu" != generic ]; then
3929     add_cflags  $cpuflags
3930     add_asflags $cpuflags
3931 fi
3932
3933 # compiler sanity check
3934 check_exec <<EOF
3935 int main(void){ return 0; }
3936 EOF
3937 if test "$?" != 0; then
3938     echo "$cc is unable to create an executable file."
3939     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3940         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3941         echo "Only do this if you know what cross compiling means."
3942     fi
3943     die "C compiler test failed."
3944 fi
3945
3946 add_cppflags -D_ISOC99_SOURCE
3947 add_cxxflags -D__STDC_CONSTANT_MACROS
3948 check_cflags -std=c99
3949 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3950 #include <stdlib.h>
3951 EOF
3952 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3953 #include <stdlib.h>
3954 EOF
3955
3956 add_host_cppflags -D_ISOC99_SOURCE
3957 check_host_cflags -std=c99
3958 check_host_cflags -Wall
3959 check_host_cflags -O3
3960
3961 check_64bit(){
3962     arch32=$1
3963     arch64=$2
3964     expr=$3
3965     check_code cc "" "int test[2*($expr) - 1]" &&
3966         subarch=$arch64 || subarch=$arch32
3967 }
3968
3969 case "$arch" in
3970     aarch64|alpha|ia64)
3971         spic=$shared
3972     ;;
3973     mips)
3974         check_64bit mips mips64 '_MIPS_SIM > 1'
3975         spic=$shared
3976     ;;
3977     parisc)
3978         check_64bit parisc parisc64 'sizeof(void *) > 4'
3979         spic=$shared
3980     ;;
3981     ppc)
3982         check_64bit ppc ppc64 'sizeof(void *) > 4'
3983         spic=$shared
3984     ;;
3985     s390)
3986         check_64bit s390 s390x 'sizeof(void *) > 4'
3987         spic=$shared
3988     ;;
3989     sparc)
3990         check_64bit sparc sparc64 'sizeof(void *) > 4'
3991         spic=$shared
3992     ;;
3993     x86)
3994         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3995         # Treat x32 as x64 for now. Note it also needs spic=$shared
3996         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3997             subarch=x86_64
3998         if test "$subarch" = "x86_64"; then
3999             spic=$shared
4000         fi
4001     ;;
4002     ppc)
4003         check_cc <<EOF && subarch="ppc64"
4004         int test[(int)sizeof(char*) - 7];
4005 EOF
4006     ;;
4007 esac
4008
4009 enable $subarch
4010 enabled spic && enable_weak pic
4011
4012 # OS specific
4013 case $target_os in
4014     aix)
4015         SHFLAGS=-shared
4016         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4017         enabled shared && add_ldflags -Wl,-brtl
4018         ;;
4019     android)
4020         disable symver
4021         enable section_data_rel_ro
4022         SLIB_INSTALL_NAME='$(SLIBNAME)'
4023         SLIB_INSTALL_LINKS=
4024         # soname not set on purpose
4025         SHFLAGS=-shared
4026         ;;
4027     haiku)
4028         prefix_default="/boot/common"
4029         network_extralibs="-lnetwork"
4030         host_libs=
4031         ;;
4032     sunos)
4033         SHFLAGS='-shared -Wl,-h,$$(@F)'
4034         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4035         network_extralibs="-lsocket -lnsl"
4036         # When using suncc to build, the Solaris linker will mark
4037         # an executable with each instruction set encountered by
4038         # the Solaris assembler.  As our libraries contain their own
4039         # guards for processor-specific code, instead suppress
4040         # generation of the HWCAPS ELF section on Solaris x86 only.
4041         enabled_all suncc x86 &&
4042             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4043             add_ldflags -Wl,-M,mapfile
4044         nm_default='nm -P -g'
4045         ;;
4046     netbsd)
4047         disable symver
4048         oss_indev_extralibs="-lossaudio"
4049         oss_outdev_extralibs="-lossaudio"
4050         enabled gcc || check_ldflags -Wl,-zmuldefs
4051         ;;
4052     openbsd|bitrig)
4053         disable symver
4054         SHFLAGS='-shared'
4055         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4056         SLIB_INSTALL_LINKS=
4057         oss_indev_extralibs="-lossaudio"
4058         oss_outdev_extralibs="-lossaudio"
4059         ;;
4060     dragonfly)
4061         disable symver
4062         ;;
4063     freebsd)
4064         ;;
4065     bsd/os)
4066         add_extralibs -lpoll -lgnugetopt
4067         strip="strip -d"
4068         ;;
4069     darwin)
4070         enabled ppc && add_asflags -force_cpusubtype_ALL
4071         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4072         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4073         strip="${strip} -x"
4074         add_ldflags -Wl,-dynamic,-search_paths_first
4075         SLIBSUF=".dylib"
4076         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4077         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4078         objformat="macho"
4079         enabled x86_64 && objformat="macho64"
4080         enabled_any pic shared x86_64 ||
4081             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4082         ;;
4083     mingw32*)
4084         if test $target_os = "mingw32ce"; then
4085             disable network
4086         else
4087             target_os=mingw32
4088         fi
4089         LIBTARGET=i386
4090         if enabled x86_64; then
4091             LIBTARGET="i386:x86-64"
4092         elif enabled arm; then
4093             LIBTARGET=arm-wince
4094         fi
4095         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4096         check_ldflags -Wl,--nxcompat
4097         check_ldflags -Wl,--dynamicbase
4098         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4099         shlibdir_default="$bindir_default"
4100         SLIBPREF=""
4101         SLIBSUF=".dll"
4102         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4103         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4104         dlltool="${cross_prefix}dlltool"
4105         if check_cmd lib.exe -list; then
4106             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4107             if enabled x86_64; then
4108                 LIBTARGET=x64
4109             fi
4110         elif check_cmd $dlltool --version; then
4111             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4112         fi
4113         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4114         SLIB_INSTALL_LINKS=
4115         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4116         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4117         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4118         objformat="win32"
4119         ranlib=:
4120         enable dos_paths
4121         ;;
4122     win32|win64)
4123         disable symver
4124         if enabled shared; then
4125             # Link to the import library instead of the normal static library
4126             # for shared libs.
4127             LD_LIB='%.lib'
4128             # Cannot build both shared and static libs with MSVC or icl.
4129             disable static
4130         fi
4131         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4132         shlibdir_default="$bindir_default"
4133         SLIBPREF=""
4134         SLIBSUF=".dll"
4135         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4136         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4137         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4138         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4139         SLIB_INSTALL_LINKS=
4140         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4141         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4142         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4143         objformat="win32"
4144         ranlib=:
4145         enable dos_paths
4146         ;;
4147     cygwin*)
4148         target_os=cygwin
4149         shlibdir_default="$bindir_default"
4150         SLIBPREF="cyg"
4151         SLIBSUF=".dll"
4152         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4153         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4154         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4155         SLIB_INSTALL_LINKS=
4156         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4157         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4158         objformat="win32"
4159         enable dos_paths
4160         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4161         ;;
4162     *-dos|freedos|opendos)
4163         network_extralibs="-lsocket"
4164         objformat="coff"
4165         enable dos_paths
4166         add_cppflags -U__STRICT_ANSI__
4167         ;;
4168     linux)
4169         enable dv1394
4170         enable section_data_rel_ro
4171         ;;
4172     irix*)
4173         target_os=irix
4174         ranlib="echo ignoring ranlib"
4175         ;;
4176     os/2*)
4177         strip="lxlite -CS"
4178         ln_s="cp -f"
4179         objformat="aout"
4180         add_cppflags -D_GNU_SOURCE
4181         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4182         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4183         LIBSUF="_s.a"
4184         SLIBPREF=""
4185         SLIBSUF=".dll"
4186         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4187         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4188         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4189             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4190             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4191             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4192             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4193             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4194         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4195             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4196         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4197         enable dos_paths
4198         enable_weak os2threads
4199         ;;
4200     gnu/kfreebsd)
4201         add_cppflags -D_BSD_SOURCE
4202         ;;
4203     gnu)
4204         ;;
4205     qnx)
4206         add_cppflags -D_QNX_SOURCE
4207         network_extralibs="-lsocket"
4208         ;;
4209     symbian)
4210         SLIBSUF=".dll"
4211         enable dos_paths
4212         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4213         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4214         add_ldflags -Wl,--target1-abs,--no-undefined \
4215                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4216                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4217         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4218                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4219                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4220         ;;
4221     osf1)
4222         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4223         ;;
4224     minix)
4225         ;;
4226     plan9)
4227         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4228                      -D_REENTRANT_SOURCE        \
4229                      -D_RESEARCH_SOURCE         \
4230                      -DFD_SETSIZE=96            \
4231                      -DHAVE_SOCK_OPTS
4232         add_compat strtod.o strtod=avpriv_strtod
4233         network_extralibs='-lbsd'
4234         exeobjs=compat/plan9/main.o
4235         disable ffserver
4236         cp_f='cp'
4237         ;;
4238     none)
4239         ;;
4240     *)
4241         die "Unknown OS '$target_os'."
4242         ;;
4243 esac
4244
4245 # determine libc flavour
4246
4247 probe_libc(){
4248     pfx=$1
4249     pfx_no_=${pfx%_}
4250     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4251     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4252         eval ${pfx}libc_type=uclibc
4253         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4254     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4255         eval ${pfx}libc_type=glibc
4256         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4257     # MinGW headers can be installed on Cygwin, so check for newlib first.
4258     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4259         eval ${pfx}libc_type=newlib
4260         add_${pfx}cppflags -U__STRICT_ANSI__
4261     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4262     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4263         eval ${pfx}libc_type=mingw64
4264         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4265             add_compat msvcrt/snprintf.o
4266             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4267         fi
4268         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4269         eval test \$${pfx_no_}cc_type = "gcc" &&
4270             add_${pfx}cppflags -D__printf__=__gnu_printf__
4271     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4272          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4273         eval ${pfx}libc_type=mingw32
4274         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4275             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4276             die "ERROR: MinGW32 runtime version must be >= 3.15."
4277         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4278         eval test \$${pfx_no_}cc_type = "gcc" &&
4279             add_${pfx}cppflags -D__printf__=__gnu_printf__
4280     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4281         eval ${pfx}libc_type=msvcrt
4282         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4283         # 0x601 by default unless something else is set by the user.
4284         # This can easily lead to us detecting functions only present
4285         # in such new versions and producing binaries requiring windows 7.0.
4286         # Therefore explicitly set the default to XP unless the user has
4287         # set something else on the command line.
4288         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4289             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4290     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4291         eval ${pfx}libc_type=klibc
4292     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4293         eval ${pfx}libc_type=bionic
4294     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4295         eval ${pfx}libc_type=solaris
4296         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4297     fi
4298     check_${pfx}cc <<EOF
4299 #include <time.h>
4300 void *v = localtime_r;
4301 EOF
4302 test "$?" != 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
4303 #include <time.h>
4304 void *v = localtime_r;
4305 EOF
4306
4307 }
4308
4309 probe_libc
4310 test -n "$libc_type" && enable libc_$libc_type
4311 probe_libc host_
4312 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4313
4314 case $libc_type in
4315     bionic)
4316         add_compat strtod.o strtod=avpriv_strtod
4317         ;;
4318     msvcrt)
4319         add_compat strtod.o strtod=avpriv_strtod
4320         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4321                                      _snprintf=avpriv_snprintf  \
4322                                      vsnprintf=avpriv_vsnprintf
4323         ;;
4324 esac
4325
4326 # hacks for compiler/libc/os combinations
4327
4328 if enabled_all tms470 libc_glibc; then
4329     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4330     add_cppflags -D__USER_LABEL_PREFIX__=
4331     add_cppflags -D__builtin_memset=memset
4332     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4333     add_cflags   -pds=48    # incompatible redefinition of macro
4334 fi
4335
4336 if enabled_all ccc libc_glibc; then
4337     add_ldflags -Wl,-z,now  # calls to libots crash without this
4338 fi
4339
4340 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4341     add_cppflags '-I\$(SRC_PATH)/compat/float'
4342
4343 esc(){
4344     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4345 }
4346
4347 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4348
4349 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4350
4351 set_default libdir
4352 : ${shlibdir_default:="$libdir"}
4353
4354 set_default $PATHS_LIST
4355 set_default nm
4356
4357 # we need to build at least one lib type
4358 if ! enabled_any static shared; then
4359     cat <<EOF
4360 At least one library type must be built.
4361 Specify --enable-static to build the static libraries or --enable-shared to
4362 build the shared libraries as well. To only build the shared libraries specify
4363 --disable-static in addition to --enable-shared.
4364 EOF
4365     exit 1;
4366 fi
4367
4368 die_license_disabled() {
4369     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4370 }
4371
4372 die_license_disabled_gpl() {
4373     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4374 }
4375
4376 die_license_disabled gpl frei0r
4377 die_license_disabled gpl libcdio
4378 die_license_disabled gpl libsmbclient
4379 die_license_disabled gpl libutvideo
4380 die_license_disabled gpl libvidstab
4381 die_license_disabled gpl libx264
4382 die_license_disabled gpl libx265
4383 die_license_disabled gpl libxavs
4384 die_license_disabled gpl libxvid
4385 die_license_disabled gpl libzvbi
4386 die_license_disabled gpl x11grab
4387
4388 die_license_disabled nonfree libaacplus
4389 die_license_disabled nonfree libfaac
4390 die_license_disabled nonfree nvenc
4391 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4392 enabled gpl && die_license_disabled_gpl nonfree openssl
4393
4394 die_license_disabled version3 libopencore_amrnb
4395 die_license_disabled version3 libopencore_amrwb
4396 die_license_disabled version3 libsmbclient
4397 die_license_disabled version3 libvo_aacenc
4398 die_license_disabled version3 libvo_amrwbenc
4399
4400 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4401
4402 disabled optimizations || check_cflags -fomit-frame-pointer
4403
4404 enable_weak_pic() {
4405     disabled pic && return
4406     enable pic
4407     add_cppflags -DPIC
4408     case "$target_os" in
4409     mingw*|cygwin*)
4410         ;;
4411     *)
4412         add_cflags -fPIC
4413         ;;
4414     esac
4415     add_asflags  -fPIC
4416 }
4417
4418 enabled pic && enable_weak_pic
4419
4420 check_cc <<EOF || die "Symbol mangling check failed."
4421 int ff_extern;
4422 EOF
4423 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4424 extern_prefix=${sym%%ff_extern*}
4425
4426 check_cc <<EOF && enable_weak inline_asm
4427 void foo(void) { __asm__ volatile ("" ::); }
4428 EOF
4429
4430 _restrict=
4431 for restrict_keyword in restrict __restrict__ __restrict; do
4432     check_cc <<EOF && _restrict=$restrict_keyword && break
4433 void foo(char * $restrict_keyword p);
4434 EOF
4435 done
4436
4437 check_cc <<EOF && enable pragma_deprecated
4438 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4439 EOF
4440
4441 check_cc <<EOF && enable attribute_packed
4442 struct { int x; } __attribute__((packed)) x;
4443 EOF
4444
4445 check_cc <<EOF && enable attribute_may_alias
4446 union { int x; } __attribute__((may_alias)) x;
4447 EOF
4448
4449 check_cc <<EOF || die "endian test failed"
4450 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4451 EOF
4452 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4453
4454 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4455     if ! enabled bigendian && enabled altivec ;then
4456         enable vsx
4457     fi
4458 fi
4459
4460 check_gas() {
4461     log "check_gas using '$as' as AS"
4462     # :vararg is used on aarch64, arm and ppc altivec
4463     check_as <<EOF || return 1
4464 .macro m n, y:vararg=0
4465 \n: .int \y
4466 .endm
4467 m x
4468 EOF
4469     # .altmacro is only used in arm asm
4470     ! enabled arm || check_as <<EOF || return 1
4471 .altmacro
4472 EOF
4473     enable gnu_as
4474     return 0
4475 }
4476
4477 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4478     nogas=:
4479     enabled_any arm aarch64 && nogas=die
4480     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4481     as_noop=-v
4482
4483     case $as_type in
4484         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4485         gcc)  gaspp_as_type=gas ;;
4486         *)    gaspp_as_type=$as_type ;;
4487     esac
4488
4489     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4490
4491     test "${as#*gas-preprocessor.pl}" != "$as" ||
4492     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4493         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4494
4495     if ! check_gas ; then
4496         as=${gas:=$as}
4497         check_gas || \
4498             $nogas "GNU assembler not found, install/update gas-preprocessor"
4499     fi
4500
4501     check_as <<EOF && enable as_func
4502 .func test
4503 .endfunc
4504 EOF
4505 fi
4506
4507 check_inline_asm inline_asm_labels '"1:\n"'
4508
4509 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4510
4511 if enabled aarch64; then
4512     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4513     # internal assembler in clang 3.3 does not support this instruction
4514     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4515     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4516
4517     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4518
4519 elif enabled alpha; then
4520
4521     check_cflags -mieee
4522
4523 elif enabled arm; then
4524
4525     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4526 float func(float a, float b){ return a+b; }
4527 EOF
4528
4529     enabled thumb && check_cflags -mthumb || check_cflags -marm
4530
4531     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4532         enable vfp_args
4533     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4534         case "${cross_prefix:-$cc}" in
4535             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4536             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4537 __asm__ (".eabi_attribute 28, 1");
4538 int main(void) { return 0; }
4539 EOF
4540         esac
4541         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4542     fi
4543
4544     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4545     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4546     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4547     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4548     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4549     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4550     enabled setend  && check_insn setend  'setend be'
4551
4552     [ $target_os = linux ] || [ $target_os = android ] ||
4553         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4554             $ARCH_EXT_LIST_ARM
4555
4556     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4557
4558     check_as <<EOF && enable as_dn_directive
4559 ra .dn d0.i16
4560 .unreq ra
4561 EOF
4562
4563     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4564
4565 elif enabled mips; then
4566
4567     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4568     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4569      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4570     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4571      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4572     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4573      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4574     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4575      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4576
4577 elif enabled parisc; then
4578
4579     if enabled gcc; then
4580         case $($cc -dumpversion) in
4581             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4582         esac
4583     fi
4584
4585 elif enabled ppc; then
4586
4587     enable local_aligned_8 local_aligned_16 local_aligned_32
4588
4589     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4590     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4591     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4592     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4593
4594     # AltiVec flags: The FSF version of GCC differs from the Apple version
4595     if enabled altivec; then
4596         check_cflags -maltivec -mabi=altivec &&
4597         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4598         check_cflags -faltivec
4599
4600         # check if our compiler supports Motorola AltiVec C API
4601         check_cc <<EOF || disable altivec
4602 $inc_altivec_h
4603 int main(void) {
4604     vector signed int v1 = (vector signed int) { 0 };
4605     vector signed int v2 = (vector signed int) { 1 };
4606     v1 = vec_add(v1, v2);
4607     return 0;
4608 }
4609 EOF
4610
4611         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4612     fi
4613
4614     if enabled vsx; then
4615         check_cflags -mvsx
4616     fi
4617 elif enabled x86; then
4618
4619     check_builtin rdtsc    intrin.h   "__rdtsc()"
4620     check_builtin mm_empty mmintrin.h "_mm_empty()"
4621
4622     enable local_aligned_8 local_aligned_16 local_aligned_32
4623
4624     # check whether EBP is available on x86
4625     # As 'i' is stored on the stack, this program will crash
4626     # if the base pointer is used to access it because the
4627     # base pointer is cleared in the inline assembly code.
4628     check_exec_crash <<EOF && enable ebp_available
4629 volatile int i=0;
4630 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4631 return i;
4632 EOF
4633
4634     # check whether EBX is available on x86
4635     check_inline_asm ebx_available '""::"b"(0)' &&
4636         check_inline_asm ebx_available '"":::"%ebx"'
4637
4638     # check whether xmm clobbers are supported
4639     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4640
4641     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4642         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4643
4644     # check whether binutils is new enough to compile SSSE3/MMXEXT
4645     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4646     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4647
4648     if ! disabled_any asm mmx yasm; then
4649         if check_cmd $yasmexe --version; then
4650             enabled x86_64 && yasm_extra="-m amd64"
4651             yasm_debug="-g dwarf2"
4652         elif check_cmd nasm -v; then
4653             yasmexe=nasm
4654             yasm_debug="-g -F dwarf"
4655             if enabled x86_64; then
4656                 case "$objformat" in
4657                     elf)   objformat=elf64 ;;
4658                     win32) objformat=win64 ;;
4659                 esac
4660             fi
4661         fi
4662
4663         YASMFLAGS="-f $objformat $yasm_extra"
4664         enabled pic               && append YASMFLAGS "-DPIC"
4665         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4666         case "$objformat" in
4667             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4668         esac
4669
4670         check_yasm "movbe ecx, [5]" && enable yasm ||
4671             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4672         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4673         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4674         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4675         check_yasm "CPU amdnop" || disable cpunop
4676     fi
4677
4678     case "$cpu" in
4679         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4680             disable fast_clz
4681         ;;
4682     esac
4683
4684 fi
4685
4686 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4687
4688 check_ldflags -Wl,--as-needed
4689 check_ldflags -Wl,-z,noexecstack
4690
4691 if check_func dlopen; then
4692     ldl=
4693 elif check_func dlopen -ldl; then
4694     ldl=-ldl
4695 fi
4696
4697 frei0r_filter_extralibs='$ldl'
4698 frei0r_src_filter_extralibs='$ldl'
4699 ladspa_filter_extralibs='$ldl'
4700 nvenc_encoder_extralibs='$ldl'
4701
4702 if ! disabled network; then
4703     check_func getaddrinfo $network_extralibs
4704     check_func getservbyport $network_extralibs
4705     check_func inet_aton $network_extralibs
4706
4707     check_type netdb.h "struct addrinfo"
4708     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4709     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4710     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4711     check_type poll.h "struct pollfd"
4712     check_type netinet/sctp.h "struct sctp_event_subscribe"
4713     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4714     check_type netinet/in.h "struct sockaddr_in6"
4715     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4716     check_type "sys/types.h sys/socket.h" socklen_t
4717
4718     # Prefer arpa/inet.h over winsock2
4719     if check_header arpa/inet.h ; then
4720         check_func closesocket
4721     elif check_header winsock2.h ; then
4722         check_func_headers winsock2.h closesocket -lws2 &&
4723             network_extralibs="-lws2" ||
4724         { check_func_headers winsock2.h closesocket -lws2_32 &&
4725             network_extralibs="-lws2_32"; } || disable winsock2_h network
4726         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4727
4728         check_type ws2tcpip.h socklen_t
4729         check_type ws2tcpip.h "struct addrinfo"
4730         check_type ws2tcpip.h "struct group_source_req"
4731         check_type ws2tcpip.h "struct ip_mreq_source"
4732         check_type ws2tcpip.h "struct ipv6_mreq"
4733         check_type winsock2.h "struct pollfd"
4734         check_struct winsock2.h "struct sockaddr" sa_len
4735         check_type ws2tcpip.h "struct sockaddr_in6"
4736         check_type ws2tcpip.h "struct sockaddr_storage"
4737     else
4738         disable network
4739     fi
4740 fi
4741
4742 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4743 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4744 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4745 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4746 check_builtin sarestart signal.h "SA_RESTART"
4747 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4748
4749 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4750 check_func  ${malloc_prefix}memalign            && enable memalign
4751 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4752
4753 check_func  access
4754 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4755 check_func  fcntl
4756 check_func  fork
4757 check_func  gethrtime
4758 check_func  getopt
4759 check_func  getrusage
4760 check_func  gettimeofday
4761 check_func  gmtime_r
4762 check_func  isatty
4763 check_func  localtime_r
4764 check_func  mach_absolute_time
4765 check_func  mkstemp
4766 check_func  mmap
4767 check_func  mprotect
4768 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4769 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4770 check_func  sched_getaffinity
4771 check_func  setrlimit
4772 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4773 check_func  strerror_r
4774 check_func  sysconf
4775 check_func  sysctl
4776 check_func  usleep
4777
4778 check_func_headers conio.h kbhit
4779 check_func_headers io.h setmode
4780 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4781 check_func_headers stdlib.h getenv
4782
4783 check_func_headers windows.h CoTaskMemFree -lole32
4784 check_func_headers windows.h GetProcessAffinityMask
4785 check_func_headers windows.h GetProcessTimes
4786 check_func_headers windows.h GetSystemTimeAsFileTime
4787 check_func_headers windows.h MapViewOfFile
4788 check_func_headers windows.h PeekNamedPipe
4789 check_func_headers windows.h SetConsoleTextAttribute
4790 check_func_headers windows.h Sleep
4791 check_func_headers windows.h VirtualAlloc
4792 check_struct windows.h "CONDITION_VARIABLE" Ptr
4793 check_func_headers glob.h glob
4794 enabled xlib &&
4795     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4796
4797 check_header direct.h
4798 check_header dlfcn.h
4799 check_header dxva.h
4800 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4801 check_header io.h
4802 check_header libcrystalhd/libcrystalhd_if.h
4803 check_header mach/mach_time.h
4804 check_header malloc.h
4805 check_header net/udplite.h
4806 check_header poll.h
4807 check_header sys/mman.h
4808 check_header sys/param.h
4809 check_header sys/resource.h
4810 check_header sys/select.h
4811 check_header sys/time.h
4812 check_header sys/un.h
4813 check_header termios.h
4814 check_header unistd.h
4815 check_header vdpau/vdpau.h
4816 check_header vdpau/vdpau_x11.h
4817 check_header VideoDecodeAcceleration/VDADecoder.h
4818 check_header windows.h
4819 check_header X11/extensions/XvMClib.h
4820 check_header asm/types.h
4821
4822 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4823 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4824 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4825
4826 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4827
4828 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4829
4830 if ! disabled w32threads && ! enabled pthreads; then
4831     check_func_headers "windows.h process.h" _beginthreadex &&
4832         enable w32threads || disable w32threads
4833 fi
4834
4835 # check for some common methods of building with pthread support
4836 # do this before the optional library checks as some of them require pthreads
4837 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4838     enable pthreads
4839     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4840         add_cflags -pthread
4841         add_extralibs -pthread
4842     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4843         add_cflags -pthreads
4844         add_extralibs -pthreads
4845     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4846         add_cflags -ldl -pthread
4847         add_extralibs -ldl -pthread
4848     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4849         add_extralibs -lpthreadGC2
4850     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4851         :
4852     elif ! check_func pthread_join && ! check_func pthread_create; then
4853         disable pthreads
4854     fi
4855     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4856 fi
4857
4858
4859 if enabled pthreads; then
4860   check_func pthread_cancel
4861 fi
4862
4863 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4864 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4865 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4866
4867 check_lib math.h sin -lm && LIBM="-lm"
4868 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4869
4870 atan2f_args=2
4871 ldexpf_args=2
4872 powf_args=2
4873
4874 for func in $MATH_FUNCS; do
4875     eval check_mathfunc $func \${${func}_args:-1}
4876 done
4877
4878 # these are off by default, so fail if requested and not available