configure: Move the .object_arch check to the right place
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-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 [autodetect]
259   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
260   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
261   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
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-mipsdspr1      disable MIPS DSP ASE R1 optimizations
362   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
363   --disable-mipsfpu        disable floating point MIPS optimizations
364   --disable-fast-unaligned consider unaligned accesses slow
365
366 Developer options (useful when working on FFmpeg itself):
367   --disable-debug          disable debugging symbols
368   --enable-debug=LEVEL     set the debug level [$debuglevel]
369   --disable-optimizations  disable compiler optimizations
370   --enable-extra-warnings  enable more compiler warnings
371   --disable-stripping      disable stripping of executables and shared libraries
372   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
373                            2 causes a slowdown at runtime.
374   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
375   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
376                            leaks and errors, using the specified valgrind binary.
377                            Cannot be combined with --target-exec
378   --enable-ftrapv          Trap arithmetic overflows
379   --samples=PATH           location of test samples for FATE, if not set use
380                            \$FATE_SAMPLES at make invocation time.
381   --enable-neon-clobber-test check NEON registers for clobbering (should be
382                            used only for debugging purposes)
383   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
384                            should be used only for debugging purposes)
385   --enable-random          randomly enable/disable components
386   --disable-random
387   --enable-random=LIST     randomly enable/disable specific components or
388   --disable-random=LIST    component groups. LIST is a comma-separated list
389                            of NAME[:PROB] entries where NAME is a component
390                            (group) and PROB the probability associated with
391                            NAME (default 0.5).
392   --random-seed=VALUE      seed value for --enable/disable-random
393
394 NOTE: Object files are built at the place where configure is launched.
395 EOF
396   exit 0
397 }
398
399 quotes='""'
400
401 log(){
402     echo "$@" >> $logfile
403 }
404
405 log_file(){
406     log BEGIN $1
407     pr -n -t $1 >> $logfile
408     log END $1
409 }
410
411 echolog(){
412     log "$@"
413     echo "$@"
414 }
415
416 warn(){
417     log "WARNING: $*"
418     WARNINGS="${WARNINGS}WARNING: $*\n"
419 }
420
421 die(){
422     echolog "$@"
423     cat <<EOF
424
425 If you think configure made a mistake, make sure you are using the latest
426 version from Git.  If the latest version fails, report the problem to the
427 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
428 EOF
429     if disabled logging; then
430         cat <<EOF
431 Rerun configure with logging enabled (do not use --disable-logging), and
432 include the log this produces with your report.
433 EOF
434     else
435         cat <<EOF
436 Include the log file "$logfile" produced by configure as this will help
437 solve the problem.
438 EOF
439     fi
440     exit 1
441 }
442
443 # Avoid locale weirdness, besides we really just want to translate ASCII.
444 toupper(){
445     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
446 }
447
448 tolower(){
449     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
450 }
451
452 c_escape(){
453     echo "$*" | sed 's/["\\]/\\\0/g'
454 }
455
456 sh_quote(){
457     v=$(echo "$1" | sed "s/'/'\\\\''/g")
458     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
459     echo "$v"
460 }
461
462 cleanws(){
463     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
464 }
465
466 filter(){
467     pat=$1
468     shift
469     for v; do
470         eval "case $v in $pat) echo $v ;; esac"
471     done
472 }
473
474 filter_out(){
475     pat=$1
476     shift
477     for v; do
478         eval "case $v in $pat) ;; *) echo $v ;; esac"
479     done
480 }
481
482 map(){
483     m=$1
484     shift
485     for v; do eval $m; done
486 }
487
488 add_suffix(){
489     suffix=$1
490     shift
491     for v; do echo ${v}${suffix}; done
492 }
493
494 set_all(){
495     value=$1
496     shift
497     for var in $*; do
498         eval $var=$value
499     done
500 }
501
502 set_weak(){
503     value=$1
504     shift
505     for var; do
506         eval : \${$var:=$value}
507     done
508 }
509
510 sanitize_var_name(){
511     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
512 }
513
514 set_safe(){
515     var=$1
516     shift
517     eval $(sanitize_var_name "$var")='$*'
518 }
519
520 get_safe(){
521     eval echo \$$(sanitize_var_name "$1")
522 }
523
524 pushvar(){
525     for pvar in $*; do
526         eval level=\${${pvar}_level:=0}
527         eval ${pvar}_${level}="\$$pvar"
528         eval ${pvar}_level=$(($level+1))
529     done
530 }
531
532 popvar(){
533     for pvar in $*; do
534         eval level=\${${pvar}_level:-0}
535         test $level = 0 && continue
536         eval level=$(($level-1))
537         eval $pvar="\${${pvar}_${level}}"
538         eval ${pvar}_level=$level
539         eval unset ${pvar}_${level}
540     done
541 }
542
543 enable(){
544     set_all yes $*
545 }
546
547 disable(){
548     set_all no $*
549 }
550
551 enable_weak(){
552     set_weak yes $*
553 }
554
555 disable_weak(){
556     set_weak no $*
557 }
558
559 enable_safe(){
560     for var; do
561         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
562     done
563 }
564
565 disable_safe(){
566     for var; do
567         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
568     done
569 }
570
571 do_enable_deep(){
572     for var; do
573         enabled $var && continue
574         eval sel="\$${var}_select"
575         eval sgs="\$${var}_suggest"
576         pushvar var sgs
577         enable_deep $sel
578         popvar sgs
579         enable_deep_weak $sgs
580         popvar var
581     done
582 }
583
584 enable_deep(){
585     do_enable_deep $*
586     enable $*
587 }
588
589 enable_deep_weak(){
590     for var; do
591         disabled $var && continue
592         pushvar var
593         do_enable_deep $var
594         popvar var
595         enable_weak $var
596     done
597 }
598
599 enabled(){
600     test "${1#!}" = "$1" && op== || op=!=
601     eval test "x\$${1#!}" $op "xyes"
602 }
603
604 disabled(){
605     test "${1#!}" = "$1" && op== || op=!=
606     eval test "x\$${1#!}" $op "xno"
607 }
608
609 enabled_all(){
610     for opt; do
611         enabled $opt || return 1
612     done
613 }
614
615 disabled_all(){
616     for opt; do
617         disabled $opt || return 1
618     done
619 }
620
621 enabled_any(){
622     for opt; do
623         enabled $opt && return 0
624     done
625 }
626
627 disabled_any(){
628     for opt; do
629         disabled $opt && return 0
630     done
631     return 1
632 }
633
634 set_default(){
635     for opt; do
636         eval : \${$opt:=\$${opt}_default}
637     done
638 }
639
640 is_in(){
641     value=$1
642     shift
643     for var in $*; do
644         [ $var = $value ] && return 0
645     done
646     return 1
647 }
648
649 do_check_deps(){
650     for cfg; do
651         cfg="${cfg#!}"
652         enabled ${cfg}_checking && die "Circular dependency for $cfg."
653         disabled ${cfg}_checking && continue
654         enable ${cfg}_checking
655         append allopts $cfg
656
657         eval dep_all="\$${cfg}_deps"
658         eval dep_any="\$${cfg}_deps_any"
659         eval dep_sel="\$${cfg}_select"
660         eval dep_sgs="\$${cfg}_suggest"
661         eval dep_ifa="\$${cfg}_if"
662         eval dep_ifn="\$${cfg}_if_any"
663
664         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
665         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
666         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
667
668         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
669         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
670         enabled_all  $dep_all || disable $cfg
671         enabled_any  $dep_any || disable $cfg
672         disabled_any $dep_sel && disable $cfg
673
674         if enabled $cfg; then
675             enable_deep $dep_sel
676             enable_deep_weak $dep_sgs
677         fi
678
679         disable ${cfg}_checking
680     done
681 }
682
683 check_deps(){
684     unset allopts
685
686     do_check_deps "$@"
687
688     for cfg in $allopts; do
689         enabled $cfg || continue
690         eval dep_extralibs="\$${cfg}_extralibs"
691         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
692     done
693 }
694
695 print_config(){
696     pfx=$1
697     files=$2
698     shift 2
699     map 'eval echo "$v \${$v:-no}"' "$@" |
700     awk "BEGIN { split(\"$files\", files) }
701         {
702             c = \"$pfx\" toupper(\$1);
703             v = \$2;
704             sub(/yes/, 1, v);
705             sub(/no/,  0, v);
706             for (f in files) {
707                 file = files[f];
708                 if (file ~ /\\.h\$/) {
709                     printf(\"#define %s %d\\n\", c, v) >>file;
710                 } else if (file ~ /\\.asm\$/) {
711                     printf(\"%%define %s %d\\n\", c, v) >>file;
712                 } else if (file ~ /\\.mak\$/) {
713                     n = -v ? \"\" : \"!\";
714                     printf(\"%s%s=yes\\n\", n, c) >>file;
715                 } else if (file ~ /\\.texi\$/) {
716                     pre = -v ? \"\" : \"@c \";
717                     yesno = \$2;
718                     c2 = tolower(c);
719                     gsub(/_/, \"-\", c2);
720                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
721                 }
722             }
723         }"
724 }
725
726 print_enabled(){
727     suf=$1
728     shift
729     for v; do
730         enabled $v && printf "%s\n" ${v%$suf};
731     done
732 }
733
734 append(){
735     var=$1
736     shift
737     eval "$var=\"\$$var $*\""
738 }
739
740 prepend(){
741     var=$1
742     shift
743     eval "$var=\"$* \$$var\""
744 }
745
746 unique(){
747     var=$1
748     uniq_list=""
749     for tok in $(eval echo \$$var); do
750         uniq_list="$(filter_out $tok $uniq_list) $tok"
751     done
752     eval "$var=\"${uniq_list}\""
753 }
754
755 add_cppflags(){
756     append CPPFLAGS "$@"
757 }
758
759 add_cflags(){
760     append CFLAGS $($cflags_filter "$@")
761 }
762
763 add_cxxflags(){
764     append CXXFLAGS $($cflags_filter "$@")
765 }
766
767 add_asflags(){
768     append ASFLAGS $($asflags_filter "$@")
769 }
770
771 add_ldflags(){
772     append LDFLAGS $($ldflags_filter "$@")
773 }
774
775 add_ldexeflags(){
776     append LDEXEFLAGS $($ldflags_filter "$@")
777 }
778
779 add_stripflags(){
780     append ASMSTRIPFLAGS "$@"
781 }
782
783 add_extralibs(){
784     prepend extralibs $($ldflags_filter "$@")
785 }
786
787 add_host_cppflags(){
788     append host_cppflags "$@"
789 }
790
791 add_host_cflags(){
792     append host_cflags $($host_cflags_filter "$@")
793 }
794
795 add_host_ldflags(){
796     append host_ldflags $($host_ldflags_filter "$@")
797 }
798
799 add_compat(){
800     append compat_objs $1
801     shift
802     map 'add_cppflags -D$v' "$@"
803 }
804
805 check_cmd(){
806     log "$@"
807     "$@" >> $logfile 2>&1
808 }
809
810 check_stat(){
811     log check_stat "$@"
812     stat "$1" >> $logfile 2>&1
813 }
814
815 cc_o(){
816     eval printf '%s\\n' $CC_O
817 }
818
819 cc_e(){
820     eval printf '%s\\n' $CC_E
821 }
822
823 check_cc(){
824     log check_cc "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
828 }
829
830 check_cxx(){
831     log check_cxx "$@"
832     cat > $TMPCPP
833     log_file $TMPCPP
834     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
835 }
836
837 check_oc(){
838     log check_oc "$@"
839     cat > $TMPM
840     log_file $TMPM
841     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
842 }
843
844 check_cpp(){
845     log check_cpp "$@"
846     cat > $TMPC
847     log_file $TMPC
848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
849 }
850
851 as_o(){
852     eval printf '%s\\n' $AS_O
853 }
854
855 check_as(){
856     log check_as "$@"
857     cat > $TMPS
858     log_file $TMPS
859     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
860 }
861
862 check_inline_asm(){
863     log check_inline_asm "$@"
864     name="$1"
865     code="$2"
866     shift 2
867     disable $name
868     check_cc "$@" <<EOF && enable $name
869 void foo(void){ __asm__ volatile($code); }
870 EOF
871 }
872
873 check_insn(){
874     log check_insn "$@"
875     check_inline_asm ${1}_inline "\"$2\""
876     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
877 }
878
879 check_yasm(){
880     log check_yasm "$@"
881     echo "$1" > $TMPS
882     log_file $TMPS
883     shift 1
884     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
885 }
886
887 ld_o(){
888     eval printf '%s\\n' $LD_O
889 }
890
891 check_ld(){
892     log check_ld "$@"
893     type=$1
894     shift 1
895     flags=$(filter_out '-l*|*.so' $@)
896     libs=$(filter '-l*|*.so' $@)
897     check_$type $($cflags_filter $flags) || return
898     flags=$($ldflags_filter $flags)
899     libs=$($ldflags_filter $libs)
900     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
901 }
902
903 print_include(){
904     hdr=$1
905     test "${hdr%.h}" = "${hdr}" &&
906         echo "#include $hdr"    ||
907         echo "#include <$hdr>"
908 }
909
910 check_code(){
911     log check_code "$@"
912     check=$1
913     headers=$2
914     code=$3
915     shift 3
916     {
917         for hdr in $headers; do
918             print_include $hdr
919         done
920         echo "int main(void) { $code; return 0; }"
921     } | check_$check "$@"
922 }
923
924 check_cppflags(){
925     log check_cppflags "$@"
926     check_cc "$@" <<EOF && append CPPFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_cflags(){
932     log test_cflags "$@"
933     set -- $($cflags_filter "$@")
934     check_cc "$@" <<EOF
935 int x;
936 EOF
937 }
938
939 check_cflags(){
940     log check_cflags "$@"
941     test_cflags "$@" && add_cflags "$@"
942 }
943
944 check_cxxflags(){
945     log check_cxxflags "$@"
946     set -- $($cflags_filter "$@")
947     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
948 int x;
949 EOF
950 }
951
952 test_ldflags(){
953     log test_ldflags "$@"
954     check_ld "cc" "$@" <<EOF
955 int main(void){ return 0; }
956 EOF
957 }
958
959 check_ldflags(){
960     log check_ldflags "$@"
961     test_ldflags "$@" && add_ldflags "$@"
962 }
963
964 test_stripflags(){
965     log test_stripflags "$@"
966     # call check_cc to get a fresh TMPO
967     check_cc <<EOF
968 int main(void) { return 0; }
969 EOF
970     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
971 }
972
973 check_stripflags(){
974     log check_stripflags "$@"
975     test_stripflags "$@" && add_stripflags "$@"
976 }
977
978 check_header(){
979     log check_header "$@"
980     header=$1
981     shift
982     disable_safe $header
983     check_cpp "$@" <<EOF && enable_safe $header
984 #include <$header>
985 int x;
986 EOF
987 }
988
989 check_header_oc(){
990     log check_header_oc "$@"
991     rm -f -- "$TMPO"
992     header=$1
993     shift
994     disable_safe $header
995     {
996        echo "#include <$header>"
997        echo "int main(void) { return 0; }"
998     } | check_oc && check_stat "$TMPO" && enable_safe $headers
999 }
1000
1001 check_func(){
1002     log check_func "$@"
1003     func=$1
1004     shift
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 extern int $func();
1008 int main(void){ $func(); }
1009 EOF
1010 }
1011
1012 check_mathfunc(){
1013     log check_mathfunc "$@"
1014     func=$1
1015     narg=$2
1016     shift 2
1017     test $narg = 2 && args="f, g" || args="f"
1018     disable $func
1019     check_ld "cc" "$@" <<EOF && enable $func
1020 #include <math.h>
1021 float foo(float f, float g) { return $func($args); }
1022 int main(void){ return (int) foo; }
1023 EOF
1024 }
1025
1026 check_func_headers(){
1027     log check_func_headers "$@"
1028     headers=$1
1029     funcs=$2
1030     shift 2
1031     {
1032         for hdr in $headers; do
1033             print_include $hdr
1034         done
1035         for func in $funcs; do
1036             echo "long check_$func(void) { return (long) $func; }"
1037         done
1038         echo "int main(void) { return 0; }"
1039     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1040 }
1041
1042 check_class_headers_cpp(){
1043     log check_class_headers_cpp "$@"
1044     headers=$1
1045     classes=$2
1046     shift 2
1047     {
1048         for hdr in $headers; do
1049             echo "#include <$hdr>"
1050         done
1051         echo "int main(void) { "
1052         i=1
1053         for class in $classes; do
1054             echo "$class obj$i;"
1055             i=$(expr $i + 1)
1056         done
1057         echo "return 0; }"
1058     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1059 }
1060
1061 check_cpp_condition(){
1062     log check_cpp_condition "$@"
1063     header=$1
1064     condition=$2
1065     shift 2
1066     check_cpp "$@" <<EOF
1067 #include <$header>
1068 #if !($condition)
1069 #error "unsatisfied condition: $condition"
1070 #endif
1071 EOF
1072 }
1073
1074 check_lib(){
1075     log check_lib "$@"
1076     header="$1"
1077     func="$2"
1078     shift 2
1079     check_header $header && check_func $func "$@" && add_extralibs "$@"
1080 }
1081
1082 check_lib2(){
1083     log check_lib2 "$@"
1084     headers="$1"
1085     funcs="$2"
1086     shift 2
1087     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1088 }
1089
1090 check_lib_cpp(){
1091     log check_lib_cpp "$@"
1092     headers="$1"
1093     classes="$2"
1094     shift 2
1095     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1096 }
1097
1098 check_pkg_config(){
1099     log check_pkg_config "$@"
1100     pkgandversion="$1"
1101     pkg="${1%% *}"
1102     headers="$2"
1103     funcs="$3"
1104     shift 3
1105     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1106     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1107     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1108     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1109         set_safe ${pkg}_cflags $pkg_cflags   &&
1110         set_safe ${pkg}_libs   $pkg_libs
1111 }
1112
1113 check_exec(){
1114     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1115 }
1116
1117 check_exec_crash(){
1118     code=$(cat)
1119
1120     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1121     # are safe but may not be available everywhere.  Thus we use
1122     # raise(SIGTERM) instead.  The check is run in a subshell so we
1123     # can redirect the "Terminated" message from the shell.  SIGBUS
1124     # is not defined by standard C so it is used conditionally.
1125
1126     (check_exec "$@") >> $logfile 2>&1 <<EOF
1127 #include <signal.h>
1128 static void sighandler(int sig){
1129     raise(SIGTERM);
1130 }
1131 int foo(void){
1132     $code
1133 }
1134 int (*func_ptr)(void) = foo;
1135 int main(void){
1136     signal(SIGILL, sighandler);
1137     signal(SIGFPE, sighandler);
1138     signal(SIGSEGV, sighandler);
1139 #ifdef SIGBUS
1140     signal(SIGBUS, sighandler);
1141 #endif
1142     return func_ptr();
1143 }
1144 EOF
1145 }
1146
1147 check_type(){
1148     log check_type "$@"
1149     headers=$1
1150     type=$2
1151     shift 2
1152     disable_safe "$type"
1153     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1154 }
1155
1156 check_struct(){
1157     log check_struct "$@"
1158     headers=$1
1159     struct=$2
1160     member=$3
1161     shift 3
1162     disable_safe "${struct}_${member}"
1163     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1164         enable_safe "${struct}_${member}"
1165 }
1166
1167 check_builtin(){
1168     log check_builtin "$@"
1169     name=$1
1170     headers=$2
1171     builtin=$3
1172     shift 3
1173     disable "$name"
1174     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1175 }
1176
1177 check_compile_assert(){
1178     log check_compile_assert "$@"
1179     name=$1
1180     headers=$2
1181     condition=$3
1182     shift 3
1183     disable "$name"
1184     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1185 }
1186
1187 require(){
1188     name="$1"
1189     header="$2"
1190     func="$3"
1191     shift 3
1192     check_lib $header $func "$@" || die "ERROR: $name not found"
1193 }
1194
1195 require2(){
1196     name="$1"
1197     headers="$2"
1198     func="$3"
1199     shift 3
1200     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1201 }
1202
1203 require_cpp(){
1204     name="$1"
1205     headers="$2"
1206     classes="$3"
1207     shift 3
1208     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1209 }
1210
1211 use_pkg_config(){
1212     pkg="$1"
1213     check_pkg_config "$@" || return 1
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 require_pkg_config(){
1219     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1220 }
1221
1222 require_libfreetype(){
1223     log require_libfreetype "$@"
1224     pkg="freetype2"
1225     check_cmd $pkg_config --exists --print-errors $pkg \
1226       || die "ERROR: $pkg not found"
1227     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1228     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1229     {
1230         echo "#include <ft2build.h>"
1231         echo "#include FT_FREETYPE_H"
1232         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1233         echo "int main(void) { return 0; }"
1234     } | check_ld "cc" $pkg_cflags $pkg_libs \
1235       && set_safe ${pkg}_cflags $pkg_cflags \
1236       && set_safe ${pkg}_libs   $pkg_libs \
1237       || die "ERROR: $pkg not found"
1238     add_cflags    $(get_safe ${pkg}_cflags)
1239     add_extralibs $(get_safe ${pkg}_libs)
1240 }
1241
1242 hostcc_e(){
1243     eval printf '%s\\n' $HOSTCC_E
1244 }
1245
1246 hostcc_o(){
1247     eval printf '%s\\n' $HOSTCC_O
1248 }
1249
1250 check_host_cc(){
1251     log check_host_cc "$@"
1252     cat > $TMPC
1253     log_file $TMPC
1254     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1255 }
1256
1257 check_host_cpp(){
1258     log check_host_cpp "$@"
1259     cat > $TMPC
1260     log_file $TMPC
1261     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1262 }
1263
1264 check_host_cppflags(){
1265     log check_host_cppflags "$@"
1266     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1267 int x;
1268 EOF
1269 }
1270
1271 check_host_cflags(){
1272     log check_host_cflags "$@"
1273     set -- $($host_cflags_filter "$@")
1274     check_host_cc "$@" <<EOF && append host_cflags "$@"
1275 int x;
1276 EOF
1277 }
1278
1279 check_host_cpp_condition(){
1280     log check_host_cpp_condition "$@"
1281     header=$1
1282     condition=$2
1283     shift 2
1284     check_host_cpp "$@" <<EOF
1285 #include <$header>
1286 #if !($condition)
1287 #error "unsatisfied condition: $condition"
1288 #endif
1289 EOF
1290 }
1291
1292 apply(){
1293     file=$1
1294     shift
1295     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1296 }
1297
1298 cp_if_changed(){
1299     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1300     mkdir -p "$(dirname $2)"
1301     $cp_f "$1" "$2"
1302 }
1303
1304 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1305 # system-dependent things.
1306
1307 COMPONENT_LIST="
1308     bsfs
1309     decoders
1310     demuxers
1311     encoders
1312     filters
1313     hwaccels
1314     indevs
1315     muxers
1316     outdevs
1317     parsers
1318     protocols
1319 "
1320
1321 EXAMPLE_LIST="
1322     avio_reading_example
1323     decoding_encoding_example
1324     demuxing_decoding_example
1325     extract_mvs_example
1326     filter_audio_example
1327     filtering_audio_example
1328     filtering_video_example
1329     metadata_example
1330     muxing_example
1331     qsvdec_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     as_object_arch
1773     asm_mod_q
1774     attribute_may_alias
1775     attribute_packed
1776     ebp_available
1777     ebx_available
1778     gnu_as
1779     gnu_windres
1780     ibm_asm
1781     inline_asm_labels
1782     inline_asm_nonlocal_labels
1783     inline_asm_direct_symbol_refs
1784     pragma_deprecated
1785     rsync_contimeout
1786     symver_asm_label
1787     symver_gnu_asm
1788     vfp_args
1789     xform_asm
1790     xmm_clobbers
1791 "
1792
1793 TYPES_LIST="
1794     CONDITION_VARIABLE_Ptr
1795     DXVA_PicParams_HEVC
1796     socklen_t
1797     struct_addrinfo
1798     struct_group_source_req
1799     struct_ip_mreq_source
1800     struct_ipv6_mreq
1801     struct_pollfd
1802     struct_rusage_ru_maxrss
1803     struct_sctp_event_subscribe
1804     struct_sockaddr_in6
1805     struct_sockaddr_sa_len
1806     struct_sockaddr_storage
1807     struct_stat_st_mtim_tv_nsec
1808     struct_v4l2_frmivalenum_discrete
1809 "
1810
1811 HAVE_LIST="
1812     $ARCH_EXT_LIST
1813     $(add_suffix _external $ARCH_EXT_LIST)
1814     $(add_suffix _inline   $ARCH_EXT_LIST)
1815     $ARCH_FEATURES
1816     $ATOMICS_LIST
1817     $BUILTIN_LIST
1818     $HAVE_LIST_CMDLINE
1819     $HAVE_LIST_PUB
1820     $HEADERS_LIST
1821     $INTRINSICS_LIST
1822     $MATH_FUNCS
1823     $SYSTEM_FUNCS
1824     $THREADS_LIST
1825     $TOOLCHAIN_FEATURES
1826     $TYPES_LIST
1827     atomics_native
1828     dos_paths
1829     dxva2api_cobj
1830     dxva2_lib
1831     libc_msvcrt
1832     libdc1394_1
1833     libdc1394_2
1834     makeinfo
1835     makeinfo_html
1836     perl
1837     pod2man
1838     sdl
1839     section_data_rel_ro
1840     texi2html
1841     threads
1842     vaapi_x11
1843     vdpau_x11
1844     xlib
1845 "
1846
1847 # options emitted with CONFIG_ prefix but not available on the command line
1848 CONFIG_EXTRA="
1849     aandcttables
1850     ac3dsp
1851     audio_frame_queue
1852     audiodsp
1853     blockdsp
1854     bswapdsp
1855     cabac
1856     dvprofile
1857     exif
1858     faandct
1859     faanidct
1860     fdctdsp
1861     fmtconvert
1862     frame_thread_encoder
1863     gcrypt
1864     golomb
1865     gplv3
1866     h263dsp
1867     h264chroma
1868     h264dsp
1869     h264pred
1870     h264qpel
1871     hpeldsp
1872     huffman
1873     huffyuvdsp
1874     huffyuvencdsp
1875     idctdsp
1876     iirfilter
1877     imdct15
1878     intrax8
1879     lgplv3
1880     llauddsp
1881     llviddsp
1882     lpc
1883     me_cmp
1884     mpeg_er
1885     mpegaudio
1886     mpegaudiodsp
1887     mpegvideo
1888     mpegvideoenc
1889     nettle
1890     pixblockdsp
1891     qpeldsp
1892     rangecoder
1893     riffdec
1894     riffenc
1895     rtpdec
1896     rtpenc_chain
1897     sinewin
1898     startcode
1899     tpeldsp
1900     videodsp
1901     vp3dsp
1902     wma_freqs
1903 "
1904
1905 CMDLINE_SELECT="
1906     $ARCH_EXT_LIST
1907     $CONFIG_LIST
1908     $HAVE_LIST_CMDLINE
1909     $THREADS_LIST
1910     asm
1911     cross_compile
1912     debug
1913     extra_warnings
1914     logging
1915     lto
1916     optimizations
1917     rpath
1918     stripping
1919 "
1920
1921 PATHS_LIST="
1922     bindir
1923     datadir
1924     docdir
1925     incdir
1926     libdir
1927     mandir
1928     prefix
1929     shlibdir
1930 "
1931
1932 CMDLINE_SET="
1933     $PATHS_LIST
1934     ar
1935     arch
1936     as
1937     assert_level
1938     build_suffix
1939     cc
1940     cpu
1941     cross_prefix
1942     cxx
1943     dep_cc
1944     doxygen
1945     extra_version
1946     gas
1947     host_cc
1948     host_cflags
1949     host_ld
1950     host_ldflags
1951     host_libs
1952     host_os
1953     install
1954     ld
1955     logfile
1956     malloc_prefix
1957     nm
1958     optflags
1959     pkg_config
1960     pkg_config_flags
1961     progs_suffix
1962     random_seed
1963     ranlib
1964     samples
1965     strip
1966     sws_max_filter_size
1967     sysinclude
1968     sysroot
1969     target_exec
1970     target_os
1971     target_path
1972     target_samples
1973     tempprefix
1974     toolchain
1975     valgrind
1976     yasmexe
1977 "
1978
1979 CMDLINE_APPEND="
1980     extra_cflags
1981     extra_cxxflags
1982     host_cppflags
1983 "
1984
1985 # code dependency declarations
1986
1987 # architecture extensions
1988
1989 armv5te_deps="arm"
1990 armv6_deps="arm"
1991 armv6t2_deps="arm"
1992 armv8_deps="aarch64"
1993 neon_deps_any="aarch64 arm"
1994 intrinsics_neon_deps="neon"
1995 vfp_deps_any="aarch64 arm"
1996 vfpv3_deps="vfp"
1997 setend_deps="arm"
1998
1999 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2000
2001 mipsfpu_deps="mips"
2002 mipsdspr1_deps="mips"
2003 mipsdspr2_deps="mips"
2004
2005 altivec_deps="ppc"
2006 ppc4xx_deps="ppc"
2007 vsx_deps="ppc"
2008
2009 cpunop_deps="i686"
2010 x86_64_select="i686"
2011 x86_64_suggest="fast_cmov"
2012
2013 amd3dnow_deps="mmx"
2014 amd3dnowext_deps="amd3dnow"
2015 i686_deps="x86"
2016 mmx_deps="x86"
2017 mmxext_deps="mmx"
2018 sse_deps="mmxext"
2019 sse2_deps="sse"
2020 sse3_deps="sse2"
2021 ssse3_deps="sse3"
2022 sse4_deps="ssse3"
2023 sse42_deps="sse4"
2024 avx_deps="sse42"
2025 xop_deps="avx"
2026 fma3_deps="avx"
2027 fma4_deps="avx"
2028 avx2_deps="avx"
2029
2030 mmx_external_deps="yasm"
2031 mmx_inline_deps="inline_asm"
2032 mmx_suggest="mmx_external mmx_inline"
2033
2034 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2035     eval dep=\$${ext}_deps
2036     eval ${ext}_external_deps='"${dep}_external"'
2037     eval ${ext}_inline_deps='"${dep}_inline"'
2038     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2039 done
2040
2041 aligned_stack_if_any="aarch64 ppc x86"
2042 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2043 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2044 fast_unaligned_if_any="aarch64 ppc x86"
2045 simd_align_16_if_any="altivec neon sse"
2046
2047 # system capabilities
2048
2049 symver_if_any="symver_asm_label symver_gnu_asm"
2050
2051 # threading support
2052 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2053 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2054 atomics_win32_if="MemoryBarrier"
2055 atomics_native_if_any="$ATOMICS_LIST"
2056 w32threads_deps="atomics_native"
2057 threads_if_any="$THREADS_LIST"
2058
2059 # subsystems
2060 dct_select="rdft"
2061 error_resilience_select="me_cmp"
2062 faandct_deps="faan fdctdsp"
2063 faanidct_deps="faan idctdsp"
2064 frame_thread_encoder_deps="encoders threads"
2065 intrax8_select="error_resilience"
2066 mdct_select="fft"
2067 rdft_select="fft"
2068 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2069 mpeg_er_select="error_resilience"
2070 mpegaudio_select="mpegaudiodsp"
2071 mpegaudiodsp_select="dct"
2072 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2073 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2074
2075 # decoders / encoders
2076 aac_decoder_select="imdct15 mdct sinewin"
2077 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2078 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2079 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2080 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2081 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2082 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2083 aic_decoder_select="golomb idctdsp"
2084 alac_encoder_select="lpc"
2085 als_decoder_select="bswapdsp"
2086 amrnb_decoder_select="lsp"
2087 amrwb_decoder_select="lsp"
2088 amv_decoder_select="sp5x_decoder exif"
2089 amv_encoder_select="aandcttables mpegvideoenc"
2090 ape_decoder_select="bswapdsp llauddsp"
2091 apng_decoder_select="zlib"
2092 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2093 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2094 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2095 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2096 atrac1_decoder_select="mdct sinewin"
2097 atrac3_decoder_select="mdct"
2098 atrac3p_decoder_select="mdct sinewin"
2099 avrn_decoder_select="exif"
2100 bink_decoder_select="blockdsp hpeldsp"
2101 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2102 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2103 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2104 cllc_decoder_select="bswapdsp"
2105 comfortnoise_encoder_select="lpc"
2106 cook_decoder_select="audiodsp mdct sinewin"
2107 cscd_decoder_select="lzo"
2108 cscd_decoder_suggest="zlib"
2109 dca_decoder_select="fmtconvert mdct"
2110 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2111 dnxhd_decoder_select="blockdsp idctdsp"
2112 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2113 dvvideo_decoder_select="dvprofile idctdsp"
2114 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2115 dxa_decoder_select="zlib"
2116 eac3_decoder_select="ac3_decoder"
2117 eac3_encoder_select="ac3_encoder"
2118 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2119 eatgq_decoder_select="aandcttables"
2120 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2121 exr_decoder_select="zlib"
2122 ffv1_decoder_select="golomb rangecoder"
2123 ffv1_encoder_select="rangecoder"
2124 ffvhuff_decoder_select="huffyuv_decoder"
2125 ffvhuff_encoder_select="huffyuv_encoder"
2126 fic_decoder_select="golomb"
2127 flac_decoder_select="golomb"
2128 flac_encoder_select="bswapdsp golomb lpc"
2129 flashsv_decoder_select="zlib"
2130 flashsv_encoder_select="zlib"
2131 flashsv2_encoder_select="zlib"
2132 flashsv2_decoder_select="zlib"
2133 flv_decoder_select="h263_decoder"
2134 flv_encoder_select="h263_encoder"
2135 fourxm_decoder_select="blockdsp bswapdsp"
2136 fraps_decoder_select="bswapdsp huffman"
2137 g2m_decoder_select="blockdsp idctdsp zlib"
2138 g729_decoder_select="audiodsp"
2139 h261_decoder_select="mpeg_er mpegvideo"
2140 h261_encoder_select="aandcttables mpegvideoenc"
2141 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2142 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2143 h263i_decoder_select="h263_decoder"
2144 h263p_encoder_select="h263_encoder"
2145 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2146 h264_decoder_suggest="error_resilience"
2147 h264_qsv_decoder_deps="libmfx"
2148 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2149 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2150 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2151 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2152 iac_decoder_select="imc_decoder"
2153 imc_decoder_select="bswapdsp fft mdct sinewin"
2154 indeo3_decoder_select="hpeldsp"
2155 interplay_video_decoder_select="hpeldsp"
2156 jpegls_decoder_select="golomb mjpeg_decoder"
2157 jpegls_encoder_select="golomb"
2158 jv_decoder_select="blockdsp"
2159 lagarith_decoder_select="huffyuvdsp"
2160 ljpeg_encoder_select="aandcttables idctdsp"
2161 loco_decoder_select="golomb"
2162 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2163 metasound_decoder_select="lsp mdct sinewin"
2164 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2165 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2166 mjpeg_encoder_select="aandcttables mpegvideoenc"
2167 mjpegb_decoder_select="mjpeg_decoder"
2168 mlp_decoder_select="mlp_parser"
2169 motionpixels_decoder_select="bswapdsp"
2170 mp1_decoder_select="mpegaudio"
2171 mp1float_decoder_select="mpegaudio"
2172 mp2_decoder_select="mpegaudio"
2173 mp2float_decoder_select="mpegaudio"
2174 mp3_decoder_select="mpegaudio"
2175 mp3adu_decoder_select="mpegaudio"
2176 mp3adufloat_decoder_select="mpegaudio"
2177 mp3float_decoder_select="mpegaudio"
2178 mp3on4_decoder_select="mpegaudio"
2179 mp3on4float_decoder_select="mpegaudio"
2180 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2181 mpc8_decoder_select="mpegaudiodsp"
2182 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2183 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2184 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2185 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2186 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2187 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2188 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2189 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2190 mpeg4_encoder_select="h263_encoder"
2191 msmpeg4v1_decoder_select="h263_decoder"
2192 msmpeg4v2_decoder_select="h263_decoder"
2193 msmpeg4v2_encoder_select="h263_encoder"
2194 msmpeg4v3_decoder_select="h263_decoder"
2195 msmpeg4v3_encoder_select="h263_encoder"
2196 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2197 mxpeg_decoder_select="mjpeg_decoder"
2198 nellymoser_decoder_select="mdct sinewin"
2199 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2200 nuv_decoder_select="idctdsp lzo"
2201 on2avc_decoder_select="mdct"
2202 opus_decoder_deps="swresample"
2203 opus_decoder_select="imdct15"
2204 png_decoder_select="zlib"
2205 png_encoder_select="huffyuvencdsp zlib"
2206 prores_decoder_select="blockdsp idctdsp"
2207 prores_encoder_select="fdctdsp"
2208 qcelp_decoder_select="lsp"
2209 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2210 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2211 ra_144_decoder_select="audiodsp"
2212 ralf_decoder_select="golomb"
2213 rawvideo_decoder_select="bswapdsp"
2214 rtjpeg_decoder_select="me_cmp"
2215 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2216 rv10_encoder_select="h263_encoder"
2217 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2218 rv20_encoder_select="h263_encoder"
2219 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2220 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2221 shorten_decoder_select="golomb"
2222 sipr_decoder_select="lsp"
2223 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2224 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2225 sonic_decoder_select="golomb rangecoder"
2226 sonic_encoder_select="golomb rangecoder"
2227 sonic_ls_encoder_select="golomb rangecoder"
2228 sp5x_decoder_select="mjpeg_decoder"
2229 svq1_decoder_select="hpeldsp"
2230 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2231 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2232 svq3_decoder_suggest="zlib"
2233 tak_decoder_select="audiodsp"
2234 theora_decoder_select="vp3_decoder"
2235 thp_decoder_select="mjpeg_decoder"
2236 tiff_decoder_suggest="zlib lzma"
2237 tiff_encoder_suggest="zlib"
2238 truehd_decoder_select="mlp_parser"
2239 truemotion2_decoder_select="bswapdsp"
2240 truespeech_decoder_select="bswapdsp"
2241 tscc_decoder_select="zlib"
2242 twinvq_decoder_select="mdct lsp sinewin"
2243 utvideo_decoder_select="bswapdsp"
2244 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2245 vble_decoder_select="huffyuvdsp"
2246 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2247 vc1image_decoder_select="vc1_decoder"
2248 vorbis_decoder_select="mdct"
2249 vorbis_encoder_select="mdct"
2250 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2251 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2252 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2253 vp6a_decoder_select="vp6_decoder"
2254 vp6f_decoder_select="vp6_decoder"
2255 vp7_decoder_select="h264pred videodsp"
2256 vp8_decoder_select="h264pred videodsp"
2257 vp9_decoder_select="videodsp vp9_parser"
2258 webp_decoder_select="vp8_decoder"
2259 wmalossless_decoder_select="llauddsp"
2260 wmapro_decoder_select="mdct sinewin wma_freqs"
2261 wmav1_decoder_select="mdct sinewin wma_freqs"
2262 wmav1_encoder_select="mdct sinewin wma_freqs"
2263 wmav2_decoder_select="mdct sinewin wma_freqs"
2264 wmav2_encoder_select="mdct sinewin wma_freqs"
2265 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2266 wmv1_decoder_select="h263_decoder"
2267 wmv1_encoder_select="h263_encoder"
2268 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2269 wmv2_encoder_select="h263_encoder"
2270 wmv3_decoder_select="vc1_decoder"
2271 wmv3image_decoder_select="wmv3_decoder"
2272 zerocodec_decoder_select="zlib"
2273 zlib_decoder_select="zlib"
2274 zlib_encoder_select="zlib"
2275 zmbv_decoder_select="zlib"
2276 zmbv_encoder_select="zlib"
2277
2278 # hardware accelerators
2279 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2280 dxva2_deps="dxva2api_h"
2281 vaapi_deps="va_va_h"
2282 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2283 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2284 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2285 xvmc_deps="X11_extensions_XvMClib_h"
2286
2287 h263_vaapi_hwaccel_deps="vaapi"
2288 h263_vaapi_hwaccel_select="h263_decoder"
2289 h263_vdpau_hwaccel_deps="vdpau"
2290 h263_vdpau_hwaccel_select="h263_decoder"
2291 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2292 h264_dxva2_hwaccel_deps="dxva2"
2293 h264_dxva2_hwaccel_select="h264_decoder"
2294 h264_qsv_hwaccel_deps="libmfx"
2295 h264_vaapi_hwaccel_deps="vaapi"
2296 h264_vaapi_hwaccel_select="h264_decoder"
2297 h264_vda_decoder_deps="vda"
2298 h264_vda_decoder_select="h264_decoder"
2299 h264_vda_hwaccel_deps="vda"
2300 h264_vda_hwaccel_select="h264_decoder"
2301 h264_vda_old_hwaccel_deps="vda"
2302 h264_vda_old_hwaccel_select="h264_decoder"
2303 h264_vdpau_decoder_deps="vdpau"
2304 h264_vdpau_decoder_select="h264_decoder"
2305 h264_vdpau_hwaccel_deps="vdpau"
2306 h264_vdpau_hwaccel_select="h264_decoder"
2307 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2308 hevc_dxva2_hwaccel_select="hevc_decoder"
2309 mpeg_vdpau_decoder_deps="vdpau"
2310 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2311 mpeg_xvmc_hwaccel_deps="xvmc"
2312 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2313 mpeg1_vdpau_decoder_deps="vdpau"
2314 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2315 mpeg1_vdpau_hwaccel_deps="vdpau"
2316 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2317 mpeg1_xvmc_hwaccel_deps="xvmc"
2318 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2319 mpeg2_crystalhd_decoder_select="crystalhd"
2320 mpeg2_dxva2_hwaccel_deps="dxva2"
2321 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2322 mpeg2_vaapi_hwaccel_deps="vaapi"
2323 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2324 mpeg2_vdpau_hwaccel_deps="vdpau"
2325 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2326 mpeg2_xvmc_hwaccel_deps="xvmc"
2327 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2328 mpeg4_crystalhd_decoder_select="crystalhd"
2329 mpeg4_vaapi_hwaccel_deps="vaapi"
2330 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2331 mpeg4_vdpau_decoder_deps="vdpau"
2332 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2333 mpeg4_vdpau_hwaccel_deps="vdpau"
2334 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2335 msmpeg4_crystalhd_decoder_select="crystalhd"
2336 vc1_crystalhd_decoder_select="crystalhd"
2337 vc1_dxva2_hwaccel_deps="dxva2"
2338 vc1_dxva2_hwaccel_select="vc1_decoder"
2339 vc1_vaapi_hwaccel_deps="vaapi"
2340 vc1_vaapi_hwaccel_select="vc1_decoder"
2341 vc1_vdpau_decoder_deps="vdpau"
2342 vc1_vdpau_decoder_select="vc1_decoder"
2343 vc1_vdpau_hwaccel_deps="vdpau"
2344 vc1_vdpau_hwaccel_select="vc1_decoder"
2345 wmv3_crystalhd_decoder_select="crystalhd"
2346 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2347 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2348 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2349 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2350
2351 # parsers
2352 h264_parser_select="h264_decoder"
2353 hevc_parser_select="hevc_decoder"
2354 mpegvideo_parser_select="mpegvideo"
2355 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2356 vc1_parser_select="mpegvideo startcode vc1_decoder"
2357
2358 # external libraries
2359 libaacplus_encoder_deps="libaacplus"
2360 libcelt_decoder_deps="libcelt"
2361 libfaac_encoder_deps="libfaac"
2362 libfaac_encoder_select="audio_frame_queue"
2363 libfdk_aac_decoder_deps="libfdk_aac"
2364 libfdk_aac_encoder_deps="libfdk_aac"
2365 libfdk_aac_encoder_select="audio_frame_queue"
2366 libgme_demuxer_deps="libgme"
2367 libgsm_decoder_deps="libgsm"
2368 libgsm_encoder_deps="libgsm"
2369 libgsm_ms_decoder_deps="libgsm"
2370 libgsm_ms_encoder_deps="libgsm"
2371 libilbc_decoder_deps="libilbc"
2372 libilbc_encoder_deps="libilbc"
2373 libmodplug_demuxer_deps="libmodplug"
2374 libmp3lame_encoder_deps="libmp3lame"
2375 libmp3lame_encoder_select="audio_frame_queue"
2376 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2377 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2378 libopencore_amrnb_encoder_select="audio_frame_queue"
2379 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2380 libopenh264_encoder_deps="libopenh264"
2381 libopenjpeg_decoder_deps="libopenjpeg"
2382 libopenjpeg_encoder_deps="libopenjpeg"
2383 libopus_decoder_deps="libopus"
2384 libopus_encoder_deps="libopus"
2385 libopus_encoder_select="audio_frame_queue"
2386 libquvi_demuxer_deps="libquvi"
2387 libschroedinger_decoder_deps="libschroedinger"
2388 libschroedinger_encoder_deps="libschroedinger"
2389 libshine_encoder_deps="libshine"
2390 libshine_encoder_select="audio_frame_queue"
2391 libspeex_decoder_deps="libspeex"
2392 libspeex_encoder_deps="libspeex"
2393 libspeex_encoder_select="audio_frame_queue"
2394 libstagefright_h264_decoder_deps="libstagefright_h264"
2395 libtheora_encoder_deps="libtheora"
2396 libtwolame_encoder_deps="libtwolame"
2397 libvo_aacenc_encoder_deps="libvo_aacenc"
2398 libvo_aacenc_encoder_select="audio_frame_queue"
2399 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2400 libvorbis_decoder_deps="libvorbis"
2401 libvorbis_encoder_deps="libvorbis"
2402 libvorbis_encoder_select="audio_frame_queue"
2403 libvpx_vp8_decoder_deps="libvpx"
2404 libvpx_vp8_encoder_deps="libvpx"
2405 libvpx_vp9_decoder_deps="libvpx"
2406 libvpx_vp9_encoder_deps="libvpx"
2407 libwavpack_encoder_deps="libwavpack"
2408 libwebp_encoder_deps="libwebp"
2409 libx264_encoder_deps="libx264"
2410 libx264rgb_encoder_deps="libx264"
2411 libx264rgb_encoder_select="libx264_encoder"
2412 libx265_encoder_deps="libx265"
2413 libxavs_encoder_deps="libxavs"
2414 libxvid_encoder_deps="libxvid"
2415 libutvideo_decoder_deps="libutvideo"
2416 libutvideo_encoder_deps="libutvideo"
2417 libzvbi_teletext_decoder_deps="libzvbi"
2418 nvenc_encoder_deps="nvenc"
2419
2420 # demuxers / muxers
2421 ac3_demuxer_select="ac3_parser"
2422 asf_demuxer_select="riffdec"
2423 asf_muxer_select="riffenc"
2424 asf_stream_muxer_select="asf_muxer"
2425 avi_demuxer_select="riffdec exif"
2426 avi_muxer_select="riffenc"
2427 avisynth_demuxer_deps="avisynth"
2428 avisynth_demuxer_select="riffdec"
2429 caf_demuxer_select="riffdec"
2430 dash_muxer_select="mp4_muxer"
2431 dirac_demuxer_select="dirac_parser"
2432 dts_demuxer_select="dca_parser"
2433 dtshd_demuxer_select="dca_parser"
2434 dv_demuxer_select="dvprofile"
2435 dv_muxer_select="dvprofile"
2436 dxa_demuxer_select="riffdec"
2437 eac3_demuxer_select="ac3_parser"
2438 f4v_muxer_select="mov_muxer"
2439 flac_demuxer_select="flac_parser"
2440 hds_muxer_select="flv_muxer"
2441 hls_muxer_select="mpegts_muxer"
2442 image2_alias_pix_demuxer_select="image2_demuxer"
2443 image2_brender_pix_demuxer_select="image2_demuxer"
2444 ipod_muxer_select="mov_muxer"
2445 ismv_muxer_select="mov_muxer"
2446 libnut_demuxer_deps="libnut"
2447 libnut_muxer_deps="libnut"
2448 matroska_audio_muxer_select="matroska_muxer"
2449 matroska_demuxer_select="riffdec"
2450 matroska_demuxer_suggest="bzlib lzo zlib"
2451 matroska_muxer_select="riffenc"
2452 mmf_muxer_select="riffenc"
2453 mov_demuxer_select="riffdec"
2454 mov_demuxer_suggest="zlib"
2455 mov_muxer_select="riffenc rtpenc_chain"
2456 mp3_demuxer_select="mpegaudio_parser"
2457 mp4_muxer_select="mov_muxer"
2458 mpegts_muxer_select="adts_muxer latm_muxer"
2459 mpegtsraw_demuxer_select="mpegts_demuxer"
2460 mxf_d10_muxer_select="mxf_muxer"
2461 mxf_opatom_muxer_select="mxf_muxer"
2462 nut_muxer_select="riffenc"
2463 nuv_demuxer_select="riffdec"
2464 oga_muxer_select="ogg_muxer"
2465 ogg_demuxer_select="golomb"
2466 opus_muxer_select="ogg_muxer"
2467 psp_muxer_select="mov_muxer"
2468 rtp_demuxer_select="sdp_demuxer"
2469 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2470 rtsp_demuxer_select="http_protocol rtpdec"
2471 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2472 sap_demuxer_select="sdp_demuxer"
2473 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2474 sdp_demuxer_select="rtpdec"
2475 smoothstreaming_muxer_select="ismv_muxer"
2476 spdif_muxer_select="aac_parser"
2477 spx_muxer_select="ogg_muxer"
2478 tak_demuxer_select="tak_parser"
2479 tg2_muxer_select="mov_muxer"
2480 tgp_muxer_select="mov_muxer"
2481 vobsub_demuxer_select="mpegps_demuxer"
2482 w64_demuxer_select="wav_demuxer"
2483 w64_muxer_select="wav_muxer"
2484 wav_demuxer_select="riffdec"
2485 wav_muxer_select="riffenc"
2486 webm_muxer_select="riffenc"
2487 wtv_demuxer_select="riffdec"
2488 wtv_muxer_select="riffenc"
2489 xmv_demuxer_select="riffdec"
2490 xwma_demuxer_select="riffdec"
2491
2492 # indevs / outdevs
2493 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2494 alsa_outdev_deps="alsa_asoundlib_h"
2495 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2496 avfoundation_indev_select="avfoundation"
2497 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2498 caca_outdev_deps="libcaca"
2499 decklink_outdev_deps="decklink pthreads"
2500 decklink_outdev_extralibs="-lstdc++"
2501 decklink_indev_deps="decklink pthreads"
2502 decklink_indev_extralibs="-lstdc++"
2503 dshow_indev_deps="IBaseFilter"
2504 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2505 dv1394_indev_deps="dv1394"
2506 dv1394_indev_select="dv_demuxer"
2507 fbdev_indev_deps="linux_fb_h"
2508 fbdev_outdev_deps="linux_fb_h"
2509 gdigrab_indev_deps="CreateDIBSection"
2510 gdigrab_indev_extralibs="-lgdi32"
2511 gdigrab_indev_select="bmp_decoder"
2512 iec61883_indev_deps="libiec61883"
2513 jack_indev_deps="jack_jack_h sem_timedwait"
2514 lavfi_indev_deps="avfilter"
2515 libcdio_indev_deps="libcdio"
2516 libdc1394_indev_deps="libdc1394"
2517 libv4l2_indev_deps="libv4l2"
2518 openal_indev_deps="openal"
2519 opengl_outdev_deps="opengl"
2520 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2521 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2522 pulse_indev_deps="libpulse"
2523 pulse_outdev_deps="libpulse"
2524 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2525 qtkit_indev_select="qtkit"
2526 sdl_outdev_deps="sdl"
2527 sndio_indev_deps="sndio_h"
2528 sndio_outdev_deps="sndio_h"
2529 v4l_indev_deps="linux_videodev_h"
2530 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2531 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2532 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2533 vfwcap_indev_extralibs="-lavicap32"
2534 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2535 xv_outdev_extralibs="-lXv -lX11 -lXext"
2536 x11grab_indev_deps="x11grab"
2537 x11grab_xcb_indev_deps="libxcb"
2538
2539 # protocols
2540 bluray_protocol_deps="libbluray"
2541 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2542 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2543 ffrtmpcrypt_protocol_select="tcp_protocol"
2544 ffrtmphttp_protocol_deps="!librtmp_protocol"
2545 ffrtmphttp_protocol_select="http_protocol"
2546 ftp_protocol_select="tcp_protocol"
2547 gopher_protocol_select="network"
2548 http_protocol_select="tcp_protocol"
2549 httpproxy_protocol_select="tcp_protocol"
2550 https_protocol_select="tls_protocol"
2551 icecast_protocol_select="http_protocol"
2552 librtmp_protocol_deps="librtmp"
2553 librtmpe_protocol_deps="librtmp"
2554 librtmps_protocol_deps="librtmp"
2555 librtmpt_protocol_deps="librtmp"
2556 librtmpte_protocol_deps="librtmp"
2557 libsmbclient_protocol_deps="libsmbclient gplv3"
2558 libssh_protocol_deps="libssh"
2559 mmsh_protocol_select="http_protocol"
2560 mmst_protocol_select="network"
2561 rtmp_protocol_deps="!librtmp_protocol"
2562 rtmp_protocol_select="tcp_protocol"
2563 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2564 rtmps_protocol_deps="!librtmp_protocol"
2565 rtmps_protocol_select="tls_protocol"
2566 rtmpt_protocol_select="ffrtmphttp_protocol"
2567 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2568 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2569 rtp_protocol_select="udp_protocol"
2570 sctp_protocol_deps="struct_sctp_event_subscribe"
2571 sctp_protocol_select="network"
2572 srtp_protocol_select="rtp_protocol"
2573 tcp_protocol_select="network"
2574 tls_protocol_deps_any="openssl gnutls"
2575 tls_protocol_select="tcp_protocol"
2576 udp_protocol_select="network"
2577 udplite_protocol_select="network"
2578 unix_protocol_deps="sys_un_h"
2579 unix_protocol_select="network"
2580
2581 # filters
2582 amovie_filter_deps="avcodec avformat"
2583 aresample_filter_deps="swresample"
2584 ass_filter_deps="libass"
2585 asyncts_filter_deps="avresample"
2586 atempo_filter_deps="avcodec"
2587 atempo_filter_select="rdft"
2588 azmq_filter_deps="libzmq"
2589 blackframe_filter_deps="gpl"
2590 boxblur_filter_deps="gpl"
2591 bs2b_filter_deps="libbs2b"
2592 colormatrix_filter_deps="gpl"
2593 cropdetect_filter_deps="gpl"
2594 delogo_filter_deps="gpl"
2595 deshake_filter_select="pixelutils"
2596 drawtext_filter_deps="libfreetype"
2597 ebur128_filter_deps="gpl"
2598 eq_filter_deps="gpl"
2599 flite_filter_deps="libflite"
2600 frei0r_filter_deps="frei0r dlopen"
2601 frei0r_src_filter_deps="frei0r dlopen"
2602 fspp_filter_deps="gpl"
2603 geq_filter_deps="gpl"
2604 histeq_filter_deps="gpl"
2605 hqdn3d_filter_deps="gpl"
2606 interlace_filter_deps="gpl"
2607 kerndeint_filter_deps="gpl"
2608 ladspa_filter_deps="ladspa dlopen"
2609 mcdeint_filter_deps="avcodec gpl"
2610 movie_filter_deps="avcodec avformat"
2611 mpdecimate_filter_deps="gpl"
2612 mpdecimate_filter_select="pixelutils"
2613 mptestsrc_filter_deps="gpl"
2614 negate_filter_deps="lut_filter"
2615 perspective_filter_deps="gpl"
2616 pp7_filter_deps="gpl"
2617 ocv_filter_deps="libopencv"
2618 owdenoise_filter_deps="gpl"
2619 pan_filter_deps="swresample"
2620 phase_filter_deps="gpl"
2621 pp_filter_deps="gpl postproc"
2622 pullup_filter_deps="gpl"
2623 removelogo_filter_deps="avcodec avformat swscale"
2624 repeatfields_filter_deps="gpl"
2625 resample_filter_deps="avresample"
2626 sab_filter_deps="gpl swscale"
2627 scale_filter_deps="swscale"
2628 select_filter_select="pixelutils"
2629 smartblur_filter_deps="gpl swscale"
2630 showspectrum_filter_deps="avcodec"
2631 showspectrum_filter_select="rdft"
2632 spp_filter_deps="gpl avcodec"
2633 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2634 stereo3d_filter_deps="gpl"
2635 subtitles_filter_deps="avformat avcodec libass"
2636 super2xsai_filter_deps="gpl"
2637 tinterlace_filter_deps="gpl"
2638 vidstabdetect_filter_deps="libvidstab"
2639 vidstabtransform_filter_deps="libvidstab"
2640 pixfmts_super2xsai_test_deps="super2xsai_filter"
2641 tinterlace_merge_test_deps="tinterlace_filter"
2642 tinterlace_pad_test_deps="tinterlace_filter"
2643 uspp_filter_deps="gpl avcodec"
2644 zmq_filter_deps="libzmq"
2645 zoompan_filter_deps="swscale"
2646
2647 # examples
2648 avio_reading="avformat avcodec avutil"
2649 avcodec_example_deps="avcodec avutil"
2650 decoding_encoding_example_deps="avcodec avformat avutil"
2651 demuxing_decoding_example_deps="avcodec avformat avutil"
2652 extract_mvs_example_deps="avcodec avformat avutil"
2653 filter_audio_example_deps="avfilter avutil"
2654 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2655 filtering_video_example_deps="avfilter avcodec avformat avutil"
2656 metadata_example_deps="avformat avutil"
2657 muxing_example_deps="avcodec avformat avutil swscale"
2658 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2659 remuxing_example_deps="avcodec avformat avutil"
2660 resampling_audio_example_deps="avutil swresample"
2661 scaling_video_example_deps="avutil swscale"
2662 transcode_aac_example_deps="avcodec avformat swresample"
2663 transcoding_example_deps="avfilter avcodec avformat avutil"
2664
2665 # libraries, in linking order
2666 avcodec_deps="avutil"
2667 avdevice_deps="avformat avcodec avutil"
2668 avfilter_deps="avutil"
2669 avformat_deps="avcodec avutil"
2670 avresample_deps="avutil"
2671 postproc_deps="avutil gpl"
2672 swresample_deps="avutil"
2673 swscale_deps="avutil"
2674
2675 # programs
2676 ffmpeg_deps="avcodec avfilter avformat swresample"
2677 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2678                null_filter
2679                setpts_filter trim_filter"
2680 ffplay_deps="avcodec avformat swscale swresample sdl"
2681 ffplay_libs='$sdl_libs'
2682 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2683 ffprobe_deps="avcodec avformat"
2684 ffserver_deps="avformat fork sarestart"
2685 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2686
2687 # documentation
2688 podpages_deps="perl"
2689 manpages_deps="perl pod2man"
2690 htmlpages_deps="perl"
2691 htmlpages_deps_any="makeinfo_html texi2html"
2692 txtpages_deps="perl makeinfo"
2693 doc_deps_any="manpages htmlpages podpages txtpages"
2694
2695 # default parameters
2696
2697 logfile="config.log"
2698
2699 # installation paths
2700 prefix_default="/usr/local"
2701 bindir_default='${prefix}/bin'
2702 datadir_default='${prefix}/share/ffmpeg'
2703 docdir_default='${prefix}/share/doc/ffmpeg'
2704 incdir_default='${prefix}/include'
2705 libdir_default='${prefix}/lib'
2706 mandir_default='${prefix}/share/man'
2707
2708 # toolchain
2709 ar_default="ar"
2710 cc_default="gcc"
2711 cxx_default="g++"
2712 host_cc_default="gcc"
2713 cp_f="cp -f"
2714 doxygen_default="doxygen"
2715 install="install"
2716 ln_s="ln -s -f"
2717 nm_default="nm -g"
2718 objformat="elf"
2719 pkg_config_default=pkg-config
2720 if ranlib 2>&1 | grep -q "\-D "; then
2721     ranlib_default="ranlib -D"
2722 else
2723     ranlib_default="ranlib"
2724 fi
2725 strip_default="strip"
2726 yasmexe_default="yasm"
2727 windres_default="windres"
2728
2729 # OS
2730 target_os_default=$(tolower $(uname -s))
2731 host_os=$target_os_default
2732
2733 # machine
2734 if test "$target_os_default" = aix; then
2735     arch_default=$(uname -p)
2736     strip_default="strip -X32_64"
2737 else
2738     arch_default=$(uname -m)
2739 fi
2740 cpu="generic"
2741 intrinsics="none"
2742
2743 # configurable options
2744 enable $PROGRAM_LIST
2745 enable $DOCUMENT_LIST
2746 enable $EXAMPLE_LIST
2747 enable $(filter_out avresample $LIBRARY_LIST)
2748 enable stripping
2749
2750 enable asm
2751 enable debug
2752 enable doc
2753 enable faan faandct faanidct
2754 enable optimizations
2755 enable runtime_cpudetect
2756 enable safe_bitstream_reader
2757 enable static
2758 enable swscale_alpha
2759
2760 sws_max_filter_size_default=256
2761 set_default sws_max_filter_size
2762
2763 # Enable hwaccels by default.
2764 enable dxva2 vaapi vda vdpau xvmc
2765 enable xlib
2766
2767 # build settings
2768 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2769 LIBPREF="lib"
2770 LIBSUF=".a"
2771 FULLNAME='$(NAME)$(BUILDSUF)'
2772 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2773 SLIBPREF="lib"
2774 SLIBSUF=".so"
2775 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2776 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2777 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2778 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2779 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2780 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2781
2782 asflags_filter=echo
2783 cflags_filter=echo
2784 ldflags_filter=echo
2785
2786 AS_C='-c'
2787 AS_O='-o $@'
2788 CC_C='-c'
2789 CC_E='-E -o $@'
2790 CC_O='-o $@'
2791 CXX_C='-c'
2792 CXX_O='-o $@'
2793 LD_O='-o $@'
2794 LD_LIB='-l%'
2795 LD_PATH='-L'
2796 HOSTCC_C='-c'
2797 HOSTCC_E='-E -o $@'
2798 HOSTCC_O='-o $@'
2799 HOSTLD_O='-o $@'
2800
2801 host_libs='-lm'
2802 host_cflags_filter=echo
2803 host_ldflags_filter=echo
2804
2805 target_path='$(CURDIR)'
2806
2807 # since the object filename is not given with the -MM flag, the compiler
2808 # is only able to print the basename, and we must add the path ourselves
2809 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2810 DEPFLAGS='-MM'
2811
2812 # find source path
2813 if test -f configure; then
2814     source_path=.
2815 else
2816     source_path=$(cd $(dirname "$0"); pwd)
2817     echo "$source_path" | grep -q '[[:blank:]]' &&
2818         die "Out of tree builds are impossible with whitespace in source path."
2819     test -e "$source_path/config.h" &&
2820         die "Out of tree builds are impossible with config.h in source dir."
2821 fi
2822
2823 for v in "$@"; do
2824     r=${v#*=}
2825     l=${v%"$r"}
2826     r=$(sh_quote "$r")
2827     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2828 done
2829
2830 find_things(){
2831     thing=$1
2832     pattern=$2
2833     file=$source_path/$3
2834     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2835 }
2836
2837 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2838 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2839 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2840 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2841 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2842 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2843 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2844 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2845 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2846 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2847 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2848
2849 ALL_COMPONENTS="
2850     $BSF_LIST
2851     $DECODER_LIST
2852     $DEMUXER_LIST
2853     $ENCODER_LIST
2854     $FILTER_LIST
2855     $HWACCEL_LIST
2856     $INDEV_LIST
2857     $MUXER_LIST
2858     $OUTDEV_LIST
2859     $PARSER_LIST
2860     $PROTOCOL_LIST
2861 "
2862
2863 for n in $COMPONENT_LIST; do
2864     v=$(toupper ${n%s})_LIST
2865     eval enable \$$v
2866     eval ${n}_if_any="\$$v"
2867 done
2868
2869 enable $ARCH_EXT_LIST
2870
2871 die_unknown(){
2872     echo "Unknown option \"$1\"."
2873     echo "See $0 --help for available options."
2874     exit 1
2875 }
2876
2877 print_3_columns() {
2878     cat | tr ' ' '\n' | sort | pr -r -3 -t
2879 }
2880
2881 show_list() {
2882     suffix=_$1
2883     shift
2884     echo $* | sed s/$suffix//g | print_3_columns
2885     exit 0
2886 }
2887
2888 rand_list(){
2889     IFS=', '
2890     set -- $*
2891     unset IFS
2892     for thing; do
2893         comp=${thing%:*}
2894         prob=${thing#$comp}
2895         prob=${prob#:}
2896         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2897         echo "prob ${prob:-0.5}"
2898         printf '%s\n' $comp
2899     done
2900 }
2901
2902 do_random(){
2903     action=$1
2904     shift
2905     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2906     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2907 }
2908
2909 for opt do
2910     optval="${opt#*=}"
2911     case "$opt" in
2912         --extra-ldflags=*)
2913             add_ldflags $optval
2914         ;;
2915         --extra-ldexeflags=*)
2916             add_ldexeflags $optval
2917         ;;
2918         --extra-libs=*)
2919             add_extralibs $optval
2920         ;;
2921         --disable-devices)
2922             disable $INDEV_LIST $OUTDEV_LIST
2923         ;;
2924         --enable-debug=*)
2925             debuglevel="$optval"
2926         ;;
2927         --disable-programs)
2928             disable $PROGRAM_LIST
2929         ;;
2930         --disable-everything)
2931             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2932         ;;
2933         --disable-all)
2934             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2935             disable $LIBRARY_LIST $PROGRAM_LIST doc
2936         ;;
2937         --enable-random|--disable-random)
2938             action=${opt%%-random}
2939             do_random ${action#--} $COMPONENT_LIST
2940         ;;
2941         --enable-random=*|--disable-random=*)
2942             action=${opt%%-random=*}
2943             do_random ${action#--} $optval
2944         ;;
2945         --enable-*=*|--disable-*=*)
2946             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2947             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2948             eval list=\$$(toupper $thing)_LIST
2949             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2950             list=$(filter "$name" $list)
2951             [ "$list" = "" ] && warn "Option $opt did not match anything"
2952             $action $list
2953         ;;
2954         --enable-?*|--disable-?*)
2955             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2956             if is_in $option $COMPONENT_LIST; then
2957                 test $action = disable && action=unset
2958                 eval $action \$$(toupper ${option%s})_LIST
2959             elif is_in $option $CMDLINE_SELECT; then
2960                 $action $option
2961             else
2962                 die_unknown $opt
2963             fi
2964         ;;
2965         --list-*)
2966             NAME="${opt#--list-}"
2967             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2968             NAME=${NAME%s}
2969             eval show_list $NAME \$$(toupper $NAME)_LIST
2970         ;;
2971         --help|-h) show_help
2972         ;;
2973         --fatal-warnings) enable fatal_warnings
2974         ;;
2975         *)
2976             optname="${opt%%=*}"
2977             optname="${optname#--}"
2978             optname=$(echo "$optname" | sed 's/-/_/g')
2979             if is_in $optname $CMDLINE_SET; then
2980                 eval $optname='$optval'
2981             elif is_in $optname $CMDLINE_APPEND; then
2982                 append $optname "$optval"
2983             else
2984                 die_unknown $opt
2985             fi
2986         ;;
2987     esac
2988 done
2989
2990 disabled logging && logfile=/dev/null
2991
2992 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2993 set >> $logfile
2994
2995 test -n "$cross_prefix" && enable cross_compile
2996
2997 if enabled cross_compile; then
2998     test -n "$arch" && test -n "$target_os" ||
2999         die "Must specify target arch and OS when cross-compiling"
3000 fi
3001
3002 test -n "$valgrind" && toolchain="valgrind-memcheck"
3003
3004 case "$toolchain" in
3005     clang-asan)
3006         cc_default="clang"
3007         add_cflags  -fsanitize=address
3008         add_ldflags -fsanitize=address
3009     ;;
3010     clang-tsan)
3011         cc_default="clang"
3012         add_cflags  -fsanitize=thread -pie
3013         add_ldflags -fsanitize=thread -pie
3014     ;;
3015     clang-usan)
3016         cc_default="clang"
3017         add_cflags  -fsanitize=undefined
3018         add_ldflags -fsanitize=undefined
3019     ;;
3020     gcc-asan)
3021         cc_default="gcc"
3022         add_cflags  -fsanitize=address
3023         add_ldflags -fsanitize=address
3024     ;;
3025     gcc-tsan)
3026         cc_default="gcc"
3027         add_cflags  -fsanitize=thread -pie -fPIC
3028         add_ldflags -fsanitize=thread -pie -fPIC
3029     ;;
3030     gcc-usan)
3031         cc_default="gcc"
3032         add_cflags  -fsanitize=undefined
3033         add_ldflags -fsanitize=undefined
3034     ;;
3035     valgrind-massif)
3036         target_exec_default=${valgrind:-"valgrind"}
3037         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3038     ;;
3039     valgrind-memcheck)
3040         target_exec_default=${valgrind:-"valgrind"}
3041         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3042     ;;
3043     msvc)
3044         # Check whether the current MSVC version needs the C99 converter.
3045         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3046         # support enough of C99 to build ffmpeg. Default to the new
3047         # behaviour if the regexp was unable to match anything, since this
3048         # successfully parses the version number of existing supported
3049         # versions that require the converter (MSVC 2010 and 2012).
3050         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3051         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3052             cc_default="cl"
3053         else
3054             cc_default="c99wrap cl"
3055         fi
3056         ld_default="link"
3057         nm_default="dumpbin -symbols"
3058         ar_default="lib"
3059         target_os_default="win32"
3060         # Use a relative path for TMPDIR. This makes sure all the
3061         # ffconf temp files are written with a relative path, avoiding
3062         # issues with msys/win32 path conversion for MSVC parameters
3063         # such as -Fo<file> or -out:<file>.
3064         TMPDIR=.
3065     ;;
3066     icl)
3067         cc_default="icl"
3068         ld_default="xilink"
3069         nm_default="dumpbin -symbols"
3070         ar_default="xilib"
3071         target_os_default="win32"
3072         TMPDIR=.
3073     ;;
3074     gcov)
3075         add_cflags  -fprofile-arcs -ftest-coverage
3076         add_ldflags -fprofile-arcs -ftest-coverage
3077     ;;
3078     hardened)
3079         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3080         add_cflags   -fno-strict-overflow -fstack-protector-all
3081         add_ldflags  -Wl,-z,relro -Wl,-z,now
3082     ;;
3083     ?*)
3084         die "Unknown toolchain $toolchain"
3085     ;;
3086 esac
3087
3088 ar_default="${cross_prefix}${ar_default}"
3089 cc_default="${cross_prefix}${cc_default}"
3090 cxx_default="${cross_prefix}${cxx_default}"
3091 nm_default="${cross_prefix}${nm_default}"
3092 pkg_config_default="${cross_prefix}${pkg_config_default}"
3093 ranlib_default="${cross_prefix}${ranlib_default}"
3094 strip_default="${cross_prefix}${strip_default}"
3095 windres_default="${cross_prefix}${windres_default}"
3096
3097 sysinclude_default="${sysroot}/usr/include"
3098
3099 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3100     target_exec target_os yasmexe
3101 enabled cross_compile || host_cc_default=$cc
3102 set_default host_cc
3103
3104 pkg_config_fail_message=""
3105 if ! $pkg_config --version >/dev/null 2>&1; then
3106     warn "$pkg_config not found, library detection may fail."
3107     pkg_config=false
3108 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3109     pkg_config_fail_message="
3110 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3111 fi
3112
3113 if test $doxygen != $doxygen_default && \
3114   ! $doxygen --version >/dev/null 2>&1; then
3115     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3116 fi
3117
3118 exesuf() {
3119     case $1 in
3120         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3121     esac
3122 }
3123
3124 EXESUF=$(exesuf $target_os)
3125 HOSTEXESUF=$(exesuf $host_os)
3126
3127 # set temporary file name
3128 : ${TMPDIR:=$TEMPDIR}
3129 : ${TMPDIR:=$TMP}
3130 : ${TMPDIR:=/tmp}
3131
3132 if [ -n "$tempprefix" ] ; then
3133     mktemp(){
3134         echo $tempprefix.${HOSTNAME}.${UID}
3135     }
3136 elif ! check_cmd mktemp -u XXXXXX; then
3137     # simple replacement for missing mktemp
3138     # NOT SAFE FOR GENERAL USE
3139     mktemp(){
3140         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3141     }
3142 fi
3143
3144 tmpfile(){
3145     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3146         (set -C; exec > $tmp) 2>/dev/null ||
3147         die "Unable to create temporary file in $TMPDIR."
3148     append TMPFILES $tmp
3149     eval $1=$tmp
3150 }
3151
3152 trap 'rm -f -- $TMPFILES' EXIT
3153
3154 tmpfile TMPASM .asm
3155 tmpfile TMPC   .c
3156 tmpfile TMPCPP .cpp
3157 tmpfile TMPE   $EXESUF
3158 tmpfile TMPH   .h
3159 tmpfile TMPM   .m
3160 tmpfile TMPO   .o
3161 tmpfile TMPS   .S
3162 tmpfile TMPSH  .sh
3163 tmpfile TMPV   .ver
3164
3165 unset -f mktemp
3166
3167 chmod +x $TMPE
3168
3169 # make sure we can execute files in $TMPDIR
3170 cat > $TMPSH 2>> $logfile <<EOF
3171 #! /bin/sh
3172 EOF
3173 chmod +x $TMPSH >> $logfile 2>&1
3174 if ! $TMPSH >> $logfile 2>&1; then
3175     cat <<EOF
3176 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3177 variable to another directory and make sure that it is not mounted noexec.
3178 EOF
3179     die "Sanity test failed."
3180 fi
3181
3182 armasm_flags(){
3183     for flag; do
3184         case $flag in
3185             # Filter out MSVC cl.exe options from cflags that shouldn't
3186             # be passed to gas-preprocessor
3187             -M[TD]*)                                            ;;
3188             *)                  echo $flag                      ;;
3189         esac
3190    done
3191 }
3192
3193 ccc_flags(){
3194     for flag; do
3195         case $flag in
3196             -std=c99)           echo -c99                       ;;
3197             -mcpu=*)            echo -arch ${flag#*=}           ;;
3198             -mieee)             echo -ieee                      ;;
3199             -O*|-fast)          echo $flag                      ;;
3200             -fno-math-errno)    echo -assume nomath_errno       ;;
3201             -g)                 echo -g3                        ;;
3202             -Wall)              echo -msg_enable level2         ;;
3203             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3204             -Wl,*)              echo $flag                      ;;
3205             -f*|-W*)                                            ;;
3206             *)                  echo $flag                      ;;
3207         esac
3208    done
3209 }
3210
3211 cparser_flags(){
3212     for flag; do
3213         case $flag in
3214             -Wno-switch)             echo -Wno-switch-enum ;;
3215             -Wno-format-zero-length) ;;
3216             -Wdisabled-optimization) ;;
3217             -Wno-pointer-sign)       echo -Wno-other ;;
3218             *)                       echo $flag ;;
3219         esac
3220     done
3221 }
3222
3223 msvc_common_flags(){
3224     for flag; do
3225         case $flag in
3226             # In addition to specifying certain flags under the compiler
3227             # specific filters, they must be specified here as well or else the
3228             # generic catch all at the bottom will print the original flag.
3229             -Wall)                ;;
3230             -std=c99)             ;;
3231             # Common flags
3232             -fomit-frame-pointer) ;;
3233             -g)                   echo -Z7 ;;
3234             -fno-math-errno)      ;;
3235             -fno-common)          ;;
3236             -fno-signed-zeros)    ;;
3237             -fPIC)                ;;
3238             -mthumb)              ;;
3239             -march=*)             ;;
3240             -lz)                  echo zlib.lib ;;
3241             -lavifil32)           echo vfw32.lib ;;
3242             -lavicap32)           echo vfw32.lib user32.lib ;;
3243             -l*)                  echo ${flag#-l}.lib ;;
3244             -L*)                  echo -libpath:${flag#-L} ;;
3245             *)                    echo $flag ;;
3246         esac
3247     done
3248 }
3249
3250 msvc_flags(){
3251     msvc_common_flags "$@"
3252     for flag; do
3253         case $flag in
3254             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3255                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3256                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3257                                        -wd4554 \
3258                                        -wd4273 -wd4701 ;;
3259         esac
3260     done
3261 }
3262
3263 icl_flags(){
3264     msvc_common_flags "$@"
3265     for flag; do
3266         case $flag in
3267             # Despite what Intel's documentation says -Wall, which is supported
3268             # on Windows, does enable remarks so disable them here.
3269             -Wall)                echo $flag -Qdiag-disable:remark ;;
3270             -std=c99)             echo -Qstd=c99 ;;
3271             -flto)                echo -ipo ;;
3272         esac
3273     done
3274 }
3275
3276 icc_flags(){
3277     for flag; do
3278         case $flag in
3279             -flto)                echo -ipo ;;
3280             *)                    echo $flag ;;
3281         esac
3282     done
3283 }
3284
3285 pgi_flags(){
3286     for flag; do
3287         case $flag in
3288             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3289             -fomit-frame-pointer) echo -Mnoframe ;;
3290             -g)                   echo -gopt ;;
3291             *)                    echo $flag ;;
3292         esac
3293     done
3294 }
3295
3296 suncc_flags(){
3297     for flag; do
3298         case $flag in
3299             -march=*|-mcpu=*)
3300                 case "${flag#*=}" in
3301                     native)                   echo -xtarget=native       ;;
3302                     v9|niagara)               echo -xarch=sparc          ;;
3303                     ultrasparc)               echo -xarch=sparcvis       ;;
3304                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3305                     i586|pentium)             echo -xchip=pentium        ;;
3306                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3307                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3308                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3309                     pentium4*)          echo -xtarget=pentium4           ;;
3310                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3311                     *-sse3)             echo -xarch=sse3                 ;;
3312                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3313                     bonnell)                   echo -xarch=ssse3         ;;
3314                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3315                     westmere)                  echo -xtarget=westmere    ;;
3316                     silvermont)                echo -xarch=sse4_2        ;;
3317                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3318                     core-avx*|ivybridge|haswell|broadwell)
3319                                                echo -xarch=avx           ;;
3320                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3321                     btver1)                    echo -xarch=amdsse4a      ;;
3322                     btver2|bdver*)             echo -xarch=avx           ;;
3323                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3324                     k8|opteron|athlon64|athlon-fx)
3325                                                echo -xarch=sse2a         ;;
3326                     athlon*)                   echo -xarch=pentium_proa  ;;
3327                 esac
3328                 ;;
3329             -std=c99)             echo -xc99              ;;
3330             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3331             -fPIC)                echo -KPIC -xcode=pic32 ;;
3332             -W*,*)                echo $flag              ;;
3333             -f*-*|-W*|-mimpure-text)                      ;;
3334             -shared)              echo -G                 ;;
3335             *)                    echo $flag              ;;
3336         esac
3337     done
3338 }
3339
3340 tms470_flags(){
3341     for flag; do
3342         case $flag in
3343             -march=*|-mcpu=*)
3344                 case "${flag#*=}" in
3345                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3346                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3347                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3348                     armv6*|arm11*)          echo -mv=6   ;;
3349                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3350                                             echo -mv=5e  ;;
3351                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3352                 esac
3353                 ;;
3354             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3355             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3356             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3357             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3358             -msoft-float)   echo --float_support=vfplib       ;;
3359             -O[0-3]|-mf=*)  echo $flag                        ;;
3360             -g)             echo -g -mn                       ;;
3361             -pds=*)         echo $flag                        ;;
3362             -D*|-I*)        echo $flag                        ;;
3363             --gcc|--abi=*)  echo $flag                        ;;
3364             -me)            echo $flag                        ;;
3365         esac
3366     done
3367 }
3368
3369 probe_cc(){
3370     pfx=$1
3371     _cc=$2
3372
3373     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3374     unset _ld_o _ldflags _ld_lib _ld_path
3375     unset _depflags _DEPCMD _DEPFLAGS
3376     _flags_filter=echo
3377
3378     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3379         true # no-op to avoid reading stdin in following checks
3380     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3381         _type=llvm_gcc
3382         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3383         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3384         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3385         _cflags_speed='-O3'
3386         _cflags_size='-Os'
3387     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3388         _type=gcc
3389         gcc_version=$($_cc --version | head -n1)
3390         gcc_basever=$($_cc -dumpversion)
3391         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3392         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3393         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3394         if ! $_cc -dumpversion | grep -q '^2\.'; then
3395             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3396         fi
3397         _cflags_speed='-O3'
3398         _cflags_size='-Os'
3399     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3400         _type=icc
3401         _ident=$($_cc --version | head -n1)
3402         _depflags='-MMD'
3403         _cflags_speed='-O3'
3404         _cflags_size='-Os'
3405         _cflags_noopt='-O1'
3406         _flags_filter=icc_flags
3407     elif $_cc -v 2>&1 | grep -q xlc; then
3408         _type=xlc
3409         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3410         _cflags_speed='-O5'
3411         _cflags_size='-O5 -qcompact'
3412     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3413         _type=ccc
3414         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3415         _DEPFLAGS='-M'
3416         _cflags_speed='-fast'
3417         _cflags_size='-O1'
3418         _flags_filter=ccc_flags
3419     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3420         test -d "$sysroot" || die "No valid sysroot specified."
3421         _type=armcc
3422         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3423         armcc_conf="$PWD/armcc.conf"
3424         $_cc --arm_linux_configure                 \
3425              --arm_linux_config_file="$armcc_conf" \
3426              --configure_sysroot="$sysroot"        \
3427              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3428              die "Error creating armcc configuration file."
3429         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3430         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3431         as_default="${cross_prefix}gcc"
3432         _depflags='-MMD'
3433         _cflags_speed='-O3'
3434         _cflags_size='-Os'
3435     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3436         _type=tms470
3437         _ident=$($_cc -version | head -n1 | tr -s ' ')
3438         _flags='--gcc --abi=eabi -me'
3439         _cc_e='-ppl -fe=$@'
3440         _cc_o='-fe=$@'
3441         _depflags='-ppa -ppd=$(@:.o=.d)'
3442         _cflags_speed='-O3 -mf=5'
3443         _cflags_size='-O3 -mf=2'
3444         _flags_filter=tms470_flags
3445     elif $_cc -v 2>&1 | grep -q clang; then
3446         _type=clang
3447         _ident=$($_cc --version | head -n1)
3448         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3449         _cflags_speed='-O3'
3450         _cflags_size='-Os'
3451     elif $_cc -V 2>&1 | grep -q Sun; then
3452         _type=suncc
3453         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3454         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3455         _DEPFLAGS='-xM1 -xc99'
3456         _ldflags='-std=c99'
3457         _cflags_speed='-O5'
3458         _cflags_size='-O5 -xspace'
3459         _flags_filter=suncc_flags
3460     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3461         _type=pathscale
3462         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3463         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3464         _cflags_speed='-O2'
3465         _cflags_size='-Os'
3466         _flags_filter='filter_out -Wdisabled-optimization'
3467     elif $_cc -v 2>&1 | grep -q Open64; then
3468         _type=open64
3469         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3470         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3471         _cflags_speed='-O2'
3472         _cflags_size='-Os'
3473         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3474     elif $_cc -V 2>&1 | grep -q Portland; then
3475         _type=pgi
3476         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3477         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3478         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3479         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3480         _cflags_noopt="-O"
3481         _flags_filter=pgi_flags
3482     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3483         _type=armasm
3484         _ident=$($_cc | head -n1)
3485         # 4509: "This form of conditional instruction is deprecated"
3486         _flags="-nologo -ignore 4509"
3487         _flags_filter=armasm_flags
3488     elif $_cc 2>&1 | grep -q Intel; then
3489         _type=icl
3490         _ident=$($cc 2>&1 | head -n1)
3491         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3492         # Not only is O3 broken on 13.x+ but it is slower on all previous
3493         # versions (tested) as well.
3494         _cflags_speed="-O2"
3495         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3496         if $_cc 2>&1 | grep -q Linker; then
3497             _ld_o='-out:$@'
3498         else
3499             _ld_o='-Fe$@'
3500         fi
3501         _cc_o='-Fo$@'
3502         _cc_e='-P'
3503         _flags_filter=icl_flags
3504         _ld_lib='lib%.a'
3505         _ld_path='-libpath:'
3506         # -Qdiag-error to make icl error when seeing certain unknown arguments
3507         _flags='-nologo -Qdiag-error:4044,10157'
3508         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3509         # with MSVC which enables it by default.
3510         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3511         if [ $pfx = hostcc ]; then
3512             append _cflags -Dsnprintf=_snprintf
3513         fi
3514         disable stripping
3515     elif $_cc 2>&1 | grep -q Microsoft; then
3516         _type=msvc
3517         _ident=$($cc 2>&1 | head -n1)
3518         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3519         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3520         _cflags_speed="-O2"
3521         _cflags_size="-O1"
3522         if $_cc 2>&1 | grep -q Linker; then
3523             _ld_o='-out:$@'
3524         else
3525             _ld_o='-Fe$@'
3526         fi
3527         _cc_o='-Fo$@'
3528         _cc_e='-P -Fi$@'
3529         _flags_filter=msvc_flags
3530         _ld_lib='lib%.a'
3531         _ld_path='-libpath:'
3532         _flags='-nologo'
3533         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3534         if [ $pfx = hostcc ]; then
3535             append _cflags -Dsnprintf=_snprintf
3536         fi
3537         disable stripping
3538     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3539         _type=cparser
3540         _ident=$($_cc --version | head -n1)
3541         _depflags='-MMD'
3542         _cflags_speed='-O4'
3543         _cflags_size='-O2'
3544         _flags_filter=cparser_flags
3545     fi
3546
3547     eval ${pfx}_type=\$_type
3548     eval ${pfx}_ident=\$_ident
3549 }
3550
3551 set_ccvars(){
3552     eval ${1}_C=\${_cc_c-\${${1}_C}}
3553     eval ${1}_E=\${_cc_e-\${${1}_E}}
3554     eval ${1}_O=\${_cc_o-\${${1}_O}}
3555
3556     if [ -n "$_depflags" ]; then
3557         eval ${1}_DEPFLAGS=\$_depflags
3558     else
3559         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3560         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3561         eval DEP${1}FLAGS=\$_flags
3562     fi
3563 }
3564
3565 probe_cc cc "$cc"
3566 cflags_filter=$_flags_filter
3567 cflags_speed=$_cflags_speed
3568 cflags_size=$_cflags_size
3569 cflags_noopt=$_cflags_noopt
3570 add_cflags $_flags $_cflags
3571 cc_ldflags=$_ldflags
3572 set_ccvars CC
3573
3574 probe_cc hostcc "$host_cc"
3575 host_cflags_filter=$_flags_filter
3576 add_host_cflags  $_flags $_cflags
3577 set_ccvars HOSTCC
3578
3579 test -n "$cc_type" && enable $cc_type ||
3580     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3581
3582 : ${as_default:=$cc}
3583 : ${dep_cc_default:=$cc}
3584 : ${ld_default:=$cc}
3585 : ${host_ld_default:=$host_cc}
3586 set_default ar as dep_cc ld host_ld windres
3587
3588 probe_cc as "$as"
3589 asflags_filter=$_flags_filter
3590 add_asflags $_flags $_cflags
3591 set_ccvars AS
3592
3593 probe_cc ld "$ld"
3594 ldflags_filter=$_flags_filter
3595 add_ldflags $_flags $_ldflags
3596 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3597 LD_O=${_ld_o-$LD_O}
3598 LD_LIB=${_ld_lib-$LD_LIB}
3599 LD_PATH=${_ld_path-$LD_PATH}
3600
3601 probe_cc hostld "$host_ld"
3602 host_ldflags_filter=$_flags_filter
3603 add_host_ldflags $_flags $_ldflags
3604 HOSTLD_O=${_ld_o-$HOSTLD_O}
3605
3606 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3607     probe_cc depcc "$dep_cc"
3608     CCDEP=${_DEPCMD:-$DEPCMD}
3609     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3610     DEPCCFLAGS=$_flags
3611 fi
3612
3613 if $ar 2>&1 | grep -q Microsoft; then
3614     arflags="-nologo"
3615     ar_o='-out:$@'
3616 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3617     arflags="rq"
3618     ar_o='$@'
3619 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3620     arflags='-Xany -r -c'
3621     ar_o='$@'
3622 elif $ar 2>&1 | grep -q "\[D\] "; then
3623     arflags="rcD"
3624     ar_o='$@'
3625 else
3626     arflags="rc"
3627     ar_o='$@'
3628 fi
3629
3630 add_cflags $extra_cflags
3631 add_cxxflags $extra_cxxflags
3632 add_asflags $extra_cflags
3633
3634 if test -n "$sysroot"; then
3635     case "$cc_type" in
3636         gcc|llvm_gcc|clang)
3637             add_cppflags --sysroot="$sysroot"
3638             add_ldflags --sysroot="$sysroot"
3639 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3640             add_cppflags -isysroot "$sysroot"
3641             add_ldflags -isysroot "$sysroot"
3642         ;;
3643         tms470)
3644             add_cppflags -I"$sysinclude"
3645             add_ldflags  --sysroot="$sysroot"
3646         ;;
3647     esac
3648 fi
3649
3650 if test "$cpu" = host; then
3651     enabled cross_compile &&
3652         die "--cpu=host makes no sense when cross-compiling."
3653
3654     case "$cc_type" in
3655         gcc|llvm_gcc)
3656             check_native(){
3657                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3658                 sed -n "/cc1.*$1=/{
3659                             s/.*$1=\\([^ ]*\\).*/\\1/
3660                             p
3661                             q
3662                         }" $TMPE
3663             }
3664             cpu=$(check_native -march || check_native -mcpu)
3665         ;;
3666     esac
3667
3668     test "${cpu:-host}" = host &&
3669         die "--cpu=host not supported with compiler $cc"
3670 fi
3671
3672 # Deal with common $arch aliases
3673 case "$arch" in
3674     aarch64|arm64)
3675         arch="aarch64"
3676     ;;
3677     arm*|iPad*|iPhone*)
3678         arch="arm"
3679     ;;
3680     mips*|IP*)
3681         arch="mips"
3682     ;;
3683     parisc*|hppa*)
3684         arch="parisc"
3685     ;;
3686     "Power Macintosh"|ppc*|powerpc*)
3687         arch="ppc"
3688     ;;
3689     s390|s390x)
3690         arch="s390"
3691     ;;
3692     sh4|sh)
3693         arch="sh4"
3694     ;;
3695     sun4u|sparc*)
3696         arch="sparc"
3697     ;;
3698     tilegx|tile-gx)
3699         arch="tilegx"
3700     ;;
3701     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3702         arch="x86"
3703     ;;
3704 esac
3705
3706 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3707 enable $arch
3708
3709 # Add processor-specific flags
3710 if enabled aarch64; then
3711
3712     case $cpu in
3713         armv*)
3714             cpuflags="-march=$cpu"
3715         ;;
3716         *)
3717             cpuflags="-mcpu=$cpu"
3718         ;;
3719     esac
3720
3721 elif enabled alpha; then
3722
3723     cpuflags="-mcpu=$cpu"
3724
3725 elif enabled arm; then
3726
3727     check_arm_arch() {
3728         check_cpp_condition stddef.h \
3729             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3730             $cpuflags
3731     }
3732
3733     probe_arm_arch() {
3734         if   check_arm_arch 4;        then echo armv4;
3735         elif check_arm_arch 4T;       then echo armv4t;
3736         elif check_arm_arch 5;        then echo armv5;
3737         elif check_arm_arch 5E;       then echo armv5e;
3738         elif check_arm_arch 5T;       then echo armv5t;
3739         elif check_arm_arch 5TE;      then echo armv5te;
3740         elif check_arm_arch 5TEJ;     then echo armv5te;
3741         elif check_arm_arch 6;        then echo armv6;
3742         elif check_arm_arch 6J;       then echo armv6j;
3743         elif check_arm_arch 6K;       then echo armv6k;
3744         elif check_arm_arch 6Z;       then echo armv6z;
3745         elif check_arm_arch 6ZK;      then echo armv6zk;
3746         elif check_arm_arch 6T2;      then echo armv6t2;
3747         elif check_arm_arch 7;        then echo armv7;
3748         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3749         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3750         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3751         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3752         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3753         fi
3754     }
3755
3756     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3757
3758     case $cpu in
3759         armv*)
3760             cpuflags="-march=$cpu"
3761             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3762         ;;
3763         *)
3764             cpuflags="-mcpu=$cpu"
3765             case $cpu in
3766                 cortex-a*)                               subarch=armv7a  ;;
3767                 cortex-r*)                               subarch=armv7r  ;;
3768                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3769                 arm11*)                                  subarch=armv6   ;;
3770                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3771                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3772                 *)                             subarch=$(probe_arm_arch) ;;
3773             esac
3774         ;;
3775     esac
3776
3777     case "$subarch" in
3778         armv5t*)    enable fast_clz                ;;
3779         armv[6-8]*)
3780             enable fast_clz
3781             disabled fast_unaligned || enable fast_unaligned
3782             ;;
3783     esac
3784
3785 elif enabled avr32; then
3786
3787     case $cpu in
3788         ap7[02]0[0-2])
3789             subarch="avr32_ap"
3790             cpuflags="-mpart=$cpu"
3791         ;;
3792         ap)
3793             subarch="avr32_ap"
3794             cpuflags="-march=$cpu"
3795         ;;
3796         uc3[ab]*)
3797             subarch="avr32_uc"
3798             cpuflags="-mcpu=$cpu"
3799         ;;
3800         uc)
3801             subarch="avr32_uc"
3802             cpuflags="-march=$cpu"
3803         ;;
3804     esac
3805
3806 elif enabled bfin; then
3807
3808     cpuflags="-mcpu=$cpu"
3809
3810 elif enabled mips; then
3811
3812     cpuflags="-march=$cpu"
3813
3814     case $cpu in
3815         24kc)
3816             disable mipsfpu
3817             disable mipsdspr1
3818             disable mipsdspr2
3819         ;;
3820         24kf*)
3821             disable mipsdspr1
3822             disable mipsdspr2
3823         ;;
3824         24kec|34kc|1004kc)
3825             disable mipsfpu
3826             disable mipsdspr2
3827         ;;
3828         24kef*|34kf*|1004kf*)
3829             disable mipsdspr2
3830         ;;
3831         74kc)
3832             disable mipsfpu
3833         ;;
3834     esac
3835
3836 elif enabled ppc; then
3837
3838     disable ldbrx
3839     disable vsx
3840
3841     case $(tolower $cpu) in
3842         601|ppc601|powerpc601)
3843             cpuflags="-mcpu=601"
3844             disable altivec
3845         ;;
3846         603*|ppc603*|powerpc603*)
3847             cpuflags="-mcpu=603"
3848             disable altivec
3849         ;;
3850         604*|ppc604*|powerpc604*)
3851             cpuflags="-mcpu=604"
3852             disable altivec
3853         ;;
3854         g3|75*|ppc75*|powerpc75*)
3855             cpuflags="-mcpu=750"
3856             disable altivec
3857         ;;
3858         g4|745*|ppc745*|powerpc745*)
3859             cpuflags="-mcpu=7450"
3860         ;;
3861         74*|ppc74*|powerpc74*)
3862             cpuflags="-mcpu=7400"
3863         ;;
3864         g5|970|ppc970|powerpc970)
3865             cpuflags="-mcpu=970"
3866         ;;
3867         power[3-8]*)
3868             cpuflags="-mcpu=$cpu"
3869         ;;
3870         cell)
3871             cpuflags="-mcpu=cell"
3872             enable ldbrx
3873         ;;
3874         e500mc)
3875             cpuflags="-mcpu=e500mc"
3876             disable altivec
3877         ;;
3878         e500v2)
3879             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3880             disable altivec
3881             disable dcbzl
3882         ;;
3883         e500)
3884             cpuflags="-mcpu=8540 -mhard-float"
3885             disable altivec
3886             disable dcbzl
3887         ;;
3888     esac
3889
3890 elif enabled sparc; then
3891
3892     case $cpu in
3893         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3894             cpuflags="-mcpu=$cpu"
3895         ;;
3896         ultrasparc*|niagara[234])
3897             cpuflags="-mcpu=$cpu"
3898         ;;
3899     esac
3900
3901 elif enabled x86; then
3902
3903     case $cpu in
3904         i[345]86|pentium)
3905             cpuflags="-march=$cpu"
3906             disable i686
3907             disable mmx
3908         ;;
3909         # targets that do NOT support nopl and conditional mov (cmov)
3910         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3911             cpuflags="-march=$cpu"
3912             disable i686
3913         ;;
3914         # targets that do support nopl and conditional mov (cmov)
3915         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3916         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3917             cpuflags="-march=$cpu"
3918             enable i686
3919             enable fast_cmov
3920         ;;
3921         # targets that do support conditional mov but on which it's slow
3922         pentium4|pentium4m|prescott|nocona)
3923             cpuflags="-march=$cpu"
3924             enable i686
3925             disable fast_cmov
3926         ;;
3927     esac
3928
3929 fi
3930
3931 if [ "$cpu" != generic ]; then
3932     add_cflags  $cpuflags
3933     add_asflags $cpuflags
3934 fi
3935
3936 # compiler sanity check
3937 check_exec <<EOF
3938 int main(void){ return 0; }
3939 EOF
3940 if test "$?" != 0; then
3941     echo "$cc is unable to create an executable file."
3942     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3943         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3944         echo "Only do this if you know what cross compiling means."
3945     fi
3946     die "C compiler test failed."
3947 fi
3948
3949 add_cppflags -D_ISOC99_SOURCE
3950 add_cxxflags -D__STDC_CONSTANT_MACROS
3951 check_cflags -std=c99
3952 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3953 #include <stdlib.h>
3954 EOF
3955 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3956 #include <stdlib.h>
3957 EOF
3958
3959 add_host_cppflags -D_ISOC99_SOURCE
3960 check_host_cflags -std=c99
3961 check_host_cflags -Wall
3962 check_host_cflags -O3
3963
3964 check_64bit(){
3965     arch32=$1
3966     arch64=$2
3967     expr=$3
3968     check_code cc "" "int test[2*($expr) - 1]" &&
3969         subarch=$arch64 || subarch=$arch32
3970 }
3971
3972 case "$arch" in
3973     aarch64|alpha|ia64)
3974         spic=$shared
3975     ;;
3976     mips)
3977         check_64bit mips mips64 '_MIPS_SIM > 1'
3978         spic=$shared
3979     ;;
3980     parisc)
3981         check_64bit parisc parisc64 'sizeof(void *) > 4'
3982         spic=$shared
3983     ;;
3984     ppc)
3985         check_64bit ppc ppc64 'sizeof(void *) > 4'
3986         spic=$shared
3987     ;;
3988     s390)
3989         check_64bit s390 s390x 'sizeof(void *) > 4'
3990         spic=$shared
3991     ;;
3992     sparc)
3993         check_64bit sparc sparc64 'sizeof(void *) > 4'
3994         spic=$shared
3995     ;;
3996     x86)
3997         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3998         # Treat x32 as x64 for now. Note it also needs spic=$shared
3999         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4000             subarch=x86_64
4001         if test "$subarch" = "x86_64"; then
4002             spic=$shared
4003         fi
4004     ;;
4005     ppc)
4006         check_cc <<EOF && subarch="ppc64"
4007         int test[(int)sizeof(char*) - 7];
4008 EOF
4009     ;;
4010 esac
4011
4012 enable $subarch
4013 enabled spic && enable_weak pic
4014
4015 # OS specific
4016 case $target_os in
4017     aix)
4018         SHFLAGS=-shared
4019         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4020         enabled shared && add_ldflags -Wl,-brtl
4021         ;;
4022     android)
4023         disable symver
4024         enable section_data_rel_ro
4025         SLIB_INSTALL_NAME='$(SLIBNAME)'
4026         SLIB_INSTALL_LINKS=
4027         # soname not set on purpose
4028         SHFLAGS=-shared
4029         ;;
4030     haiku)
4031         prefix_default="/boot/common"
4032         network_extralibs="-lnetwork"
4033         host_libs=
4034         ;;
4035     sunos)
4036         SHFLAGS='-shared -Wl,-h,$$(@F)'
4037         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4038         network_extralibs="-lsocket -lnsl"
4039         # When using suncc to build, the Solaris linker will mark
4040         # an executable with each instruction set encountered by
4041         # the Solaris assembler.  As our libraries contain their own
4042         # guards for processor-specific code, instead suppress
4043         # generation of the HWCAPS ELF section on Solaris x86 only.
4044         enabled_all suncc x86 &&
4045             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4046             add_ldflags -Wl,-M,mapfile
4047         nm_default='nm -P -g'
4048         ;;
4049     netbsd)
4050         disable symver
4051         oss_indev_extralibs="-lossaudio"
4052         oss_outdev_extralibs="-lossaudio"
4053         enabled gcc || check_ldflags -Wl,-zmuldefs
4054         ;;
4055     openbsd|bitrig)
4056         disable symver
4057         SHFLAGS='-shared'
4058         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4059         SLIB_INSTALL_LINKS=
4060         oss_indev_extralibs="-lossaudio"
4061         oss_outdev_extralibs="-lossaudio"
4062         ;;
4063     dragonfly)
4064         disable symver
4065         ;;
4066     freebsd)
4067         ;;
4068     bsd/os)
4069         add_extralibs -lpoll -lgnugetopt
4070         strip="strip -d"
4071         ;;
4072     darwin)
4073         enabled ppc && add_asflags -force_cpusubtype_ALL
4074         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4075         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4076         strip="${strip} -x"
4077         add_ldflags -Wl,-dynamic,-search_paths_first
4078         SLIBSUF=".dylib"
4079         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4080         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4081         objformat="macho"
4082         enabled x86_64 && objformat="macho64"
4083         enabled_any pic shared x86_64 ||
4084             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4085         ;;
4086     mingw32*)
4087         if test $target_os = "mingw32ce"; then
4088             disable network
4089         else
4090             target_os=mingw32
4091         fi
4092         LIBTARGET=i386
4093         if enabled x86_64; then
4094             LIBTARGET="i386:x86-64"
4095         elif enabled arm; then
4096             LIBTARGET=arm-wince
4097         fi
4098         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4099         check_ldflags -Wl,--nxcompat
4100         check_ldflags -Wl,--dynamicbase
4101         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4102         shlibdir_default="$bindir_default"
4103         SLIBPREF=""
4104         SLIBSUF=".dll"
4105         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4106         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4107         dlltool="${cross_prefix}dlltool"
4108         if check_cmd lib.exe -list; then
4109             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4110             if enabled x86_64; then
4111                 LIBTARGET=x64
4112             fi
4113         elif check_cmd $dlltool --version; then
4114             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4115         fi
4116         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4117         SLIB_INSTALL_LINKS=
4118         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4119         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4120         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4121         objformat="win32"
4122         ranlib=:
4123         enable dos_paths
4124         ;;
4125     win32|win64)
4126         disable symver
4127         if enabled shared; then
4128             # Link to the import library instead of the normal static library
4129             # for shared libs.
4130             LD_LIB='%.lib'
4131             # Cannot build both shared and static libs with MSVC or icl.
4132             disable static
4133         fi
4134         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4135         shlibdir_default="$bindir_default"
4136         SLIBPREF=""
4137         SLIBSUF=".dll"
4138         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4139         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4140         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4141         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4142         SLIB_INSTALL_LINKS=
4143         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4144         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4145         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4146         objformat="win32"
4147         ranlib=:
4148         enable dos_paths
4149         ;;
4150     cygwin*)
4151         target_os=cygwin
4152         shlibdir_default="$bindir_default"
4153         SLIBPREF="cyg"
4154         SLIBSUF=".dll"
4155         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4156         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4157         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4158         SLIB_INSTALL_LINKS=
4159         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4160         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4161         objformat="win32"
4162         enable dos_paths
4163         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4164         ;;
4165     *-dos|freedos|opendos)
4166         network_extralibs="-lsocket"
4167         objformat="coff"
4168         enable dos_paths
4169         add_cppflags -U__STRICT_ANSI__
4170         ;;
4171     linux)
4172         enable dv1394
4173         enable section_data_rel_ro
4174         ;;
4175     irix*)
4176         target_os=irix
4177         ranlib="echo ignoring ranlib"
4178         ;;
4179     os/2*)
4180         strip="lxlite -CS"
4181         ln_s="cp -f"
4182         objformat="aout"
4183         add_cppflags -D_GNU_SOURCE
4184         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4185         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4186         LIBSUF="_s.a"
4187         SLIBPREF=""
4188         SLIBSUF=".dll"
4189         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4190         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4191         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4192             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4193             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4194             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4195             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4196             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4197         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4198             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4199         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4200         enable dos_paths
4201         enable_weak os2threads
4202         ;;
4203     gnu/kfreebsd)
4204         add_cppflags -D_BSD_SOURCE
4205         ;;
4206     gnu)
4207         ;;
4208     qnx)
4209         add_cppflags -D_QNX_SOURCE
4210         network_extralibs="-lsocket"
4211         ;;
4212     symbian)
4213         SLIBSUF=".dll"
4214         enable dos_paths
4215         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4216         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4217         add_ldflags -Wl,--target1-abs,--no-undefined \
4218                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4219                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4220         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4221                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4222                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4223         ;;
4224     osf1)
4225         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4226         ;;
4227     minix)
4228         ;;
4229     plan9)
4230         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4231                      -D_REENTRANT_SOURCE        \
4232                      -D_RESEARCH_SOURCE         \
4233                      -DFD_SETSIZE=96            \
4234                      -DHAVE_SOCK_OPTS
4235         add_compat strtod.o strtod=avpriv_strtod
4236         network_extralibs='-lbsd'
4237         exeobjs=compat/plan9/main.o
4238         disable ffserver
4239         cp_f='cp'
4240         ;;
4241     none)
4242         ;;
4243     *)
4244         die "Unknown OS '$target_os'."
4245         ;;
4246 esac
4247
4248 # determine libc flavour
4249
4250 probe_libc(){
4251     pfx=$1
4252     pfx_no_=${pfx%_}
4253     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4254     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4255         eval ${pfx}libc_type=uclibc
4256         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4257     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4258         eval ${pfx}libc_type=glibc
4259         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4260     # MinGW headers can be installed on Cygwin, so check for newlib first.
4261     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4262         eval ${pfx}libc_type=newlib
4263         add_${pfx}cppflags -U__STRICT_ANSI__
4264     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4265     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4266         eval ${pfx}libc_type=mingw64
4267         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4268             add_compat msvcrt/snprintf.o
4269             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4270         fi
4271         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4272         eval test \$${pfx_no_}cc_type = "gcc" &&
4273             add_${pfx}cppflags -D__printf__=__gnu_printf__
4274     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4275          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4276         eval ${pfx}libc_type=mingw32
4277         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4278             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4279             die "ERROR: MinGW32 runtime version must be >= 3.15."
4280         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4281         eval test \$${pfx_no_}cc_type = "gcc" &&
4282             add_${pfx}cppflags -D__printf__=__gnu_printf__
4283     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4284         eval ${pfx}libc_type=msvcrt
4285         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4286         # 0x601 by default unless something else is set by the user.
4287         # This can easily lead to us detecting functions only present
4288         # in such new versions and producing binaries requiring windows 7.0.
4289         # Therefore explicitly set the default to XP unless the user has
4290         # set something else on the command line.
4291         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4292             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4293     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4294         eval ${pfx}libc_type=klibc
4295     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4296         eval ${pfx}libc_type=bionic
4297     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4298         eval ${pfx}libc_type=solaris
4299         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4300     fi
4301     check_${pfx}cc <<EOF
4302 #include <time.h>
4303 void *v = localtime_r;
4304 EOF
4305 test "$?" != 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
4306 #include <time.h>
4307 void *v = localtime_r;
4308 EOF
4309
4310 }
4311
4312 probe_libc
4313 test -n "$libc_type" && enable libc_$libc_type
4314 probe_libc host_
4315 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4316
4317 case $libc_type in
4318     bionic)
4319         add_compat strtod.o strtod=avpriv_strtod
4320         ;;
4321     msvcrt)
4322         add_compat strtod.o strtod=avpriv_strtod
4323         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4324                                      _snprintf=avpriv_snprintf  \
4325                                      vsnprintf=avpriv_vsnprintf
4326         ;;
4327 esac
4328
4329 # hacks for compiler/libc/os combinations
4330
4331 if enabled_all tms470 libc_glibc; then
4332     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4333     add_cppflags -D__USER_LABEL_PREFIX__=
4334     add_cppflags -D__builtin_memset=memset
4335     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4336     add_cflags   -pds=48    # incompatible redefinition of macro
4337 fi
4338
4339 if enabled_all ccc libc_glibc; then
4340     add_ldflags -Wl,-z,now  # calls to libots crash without this
4341 fi
4342
4343 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4344     add_cppflags '-I\$(SRC_PATH)/compat/float'
4345
4346 esc(){
4347     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4348 }
4349
4350 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4351
4352 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4353
4354 set_default libdir
4355 : ${shlibdir_default:="$libdir"}
4356
4357 set_default $PATHS_LIST
4358 set_default nm
4359
4360 # we need to build at least one lib type
4361 if ! enabled_any static shared; then
4362     cat <<EOF
4363 At least one library type must be built.
4364 Specify --enable-static to build the static libraries or --enable-shared to
4365 build the shared libraries as well. To only build the shared libraries specify
4366 --disable-static in addition to --enable-shared.
4367 EOF
4368     exit 1;
4369 fi
4370
4371 die_license_disabled() {
4372     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4373 }
4374
4375 die_license_disabled_gpl() {
4376     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4377 }
4378
4379 die_license_disabled gpl frei0r
4380 die_license_disabled gpl libcdio
4381 die_license_disabled gpl libsmbclient
4382 die_license_disabled gpl libutvideo
4383 die_license_disabled gpl libvidstab
4384 die_license_disabled gpl libx264
4385 die_license_disabled gpl libx265
4386 die_license_disabled gpl libxavs
4387 die_license_disabled gpl libxvid
4388 die_license_disabled gpl libzvbi
4389 die_license_disabled gpl x11grab
4390
4391 die_license_disabled nonfree libaacplus
4392 die_license_disabled nonfree libfaac
4393 die_license_disabled nonfree nvenc
4394 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4395 enabled gpl && die_license_disabled_gpl nonfree openssl
4396
4397 die_license_disabled version3 libopencore_amrnb
4398 die_license_disabled version3 libopencore_amrwb
4399 die_license_disabled version3 libsmbclient
4400 die_license_disabled version3 libvo_aacenc
4401 die_license_disabled version3 libvo_amrwbenc
4402
4403 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4404
4405 disabled optimizations || check_cflags -fomit-frame-pointer
4406
4407 enable_weak_pic() {
4408     disabled pic && return
4409     enable pic
4410     add_cppflags -DPIC
4411     case "$target_os" in
4412     mingw*|cygwin*)
4413         ;;
4414     *)
4415         add_cflags -fPIC
4416         ;;
4417     esac
4418     add_asflags  -fPIC
4419 }
4420
4421 enabled pic && enable_weak_pic
4422
4423 check_cc <<EOF || die "Symbol mangling check failed."
4424 int ff_extern;
4425 EOF
4426 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4427 extern_prefix=${sym%%ff_extern*}
4428
4429 check_cc <<EOF && enable_weak inline_asm
4430 void foo(void) { __asm__ volatile ("" ::); }
4431 EOF
4432
4433 _restrict=
4434 for restrict_keyword in restrict __restrict__ __restrict; do
4435     check_cc <<EOF && _restrict=$restrict_keyword && break
4436 void foo(char * $restrict_keyword p);
4437 EOF
4438 done
4439
4440 check_cc <<EOF && enable pragma_deprecated
4441 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4442 EOF
4443
4444 check_cc <<EOF && enable attribute_packed
4445 struct { int x; } __attribute__((packed)) x;
4446 EOF
4447
4448 check_cc <<EOF && enable attribute_may_alias
4449 union { int x; } __attribute__((may_alias)) x;
4450 EOF
4451
4452 check_cc <<EOF || die "endian test failed"
4453 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4454 EOF
4455 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4456
4457 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4458     if ! enabled bigendian && enabled altivec ;then
4459         enable vsx
4460     fi
4461 fi
4462
4463 check_gas() {
4464     log "check_gas using '$as' as AS"
4465     # :vararg is used on aarch64, arm and ppc altivec
4466     check_as <<EOF || return 1
4467 .macro m n, y:vararg=0
4468 \n: .int \y
4469 .endm
4470 m x
4471 EOF
4472     # .altmacro is only used in arm asm
4473     ! enabled arm || check_as <<EOF || return 1
4474 .altmacro
4475 EOF
4476     enable gnu_as
4477     return 0
4478 }
4479
4480 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4481     nogas=:
4482     enabled_any arm aarch64 && nogas=die
4483     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4484     as_noop=-v
4485
4486     case $as_type in
4487         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4488         gcc)  gaspp_as_type=gas ;;
4489         *)    gaspp_as_type=$as_type ;;
4490     esac
4491
4492     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4493
4494     test "${as#*gas-preprocessor.pl}" != "$as" ||
4495     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4496         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4497
4498     if ! check_gas ; then
4499         as=${gas:=$as}
4500         check_gas || \
4501             $nogas "GNU assembler not found, install/update gas-preprocessor"
4502     fi
4503
4504     check_as <<EOF && enable as_func
4505 .func test
4506 .endfunc
4507 EOF
4508 fi
4509
4510 check_inline_asm inline_asm_labels '"1:\n"'
4511
4512 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4513
4514 if enabled aarch64; then
4515     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4516     # internal assembler in clang 3.3 does not support this instruction
4517     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4518     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4519
4520     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4521
4522 elif enabled alpha; then
4523
4524     check_cflags -mieee
4525
4526 elif enabled arm; then
4527
4528     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4529 float func(float a, float b){ return a+b; }
4530 EOF
4531
4532     enabled thumb && check_cflags -mthumb || check_cflags -marm
4533
4534     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4535         enable vfp_args
4536     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4537         case "${cross_prefix:-$cc}" in
4538             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4539             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4540 __asm__ (".eabi_attribute 28, 1");
4541 int main(void) { return 0; }
4542 EOF
4543         esac
4544         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4545     fi
4546
4547     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4548     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4549     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4550     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4551     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4552     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4553     enabled setend  && check_insn setend  'setend be'
4554
4555     [ $target_os = linux ] || [ $target_os = android ] ||
4556         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4557             $ARCH_EXT_LIST_ARM
4558
4559     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4560
4561     check_as <<EOF && enable as_dn_directive
4562 ra .dn d0.i16
4563 .unreq ra
4564 EOF
4565
4566     # llvm's integrated assembler supports .object_arch from llvm 3.5
4567     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4568 .object_arch armv4
4569 EOF
4570
4571     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4572
4573 elif enabled mips; then
4574
4575     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4576
4577     # Enable minimum ISA based on selected options
4578     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4579         add_cflags "-mips64r2"
4580         add_asflags "-mips64r2"
4581     elif enabled mips64 && enabled mipsfpu; then
4582         add_cflags "-mips64"
4583         add_asflags "-mips64"
4584     elif enabled mipsfpu || enabled mipsdspr1 || enabled mipsdspr2; then
4585         add_cflags "-mips32r2"
4586         add_asflags "-mips32r2"
4587     fi
4588
4589     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4590      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4591     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4592      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4593     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4594      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4595
4596 elif enabled parisc; then
4597
4598     if enabled gcc; then
4599         case $($cc -dumpversion) in
4600             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4601         esac
4602     fi
4603
4604 elif enabled ppc; then
4605
4606     enable local_aligned_8 local_aligned_16 local_aligned_32
4607
4608     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4609     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4610     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4611     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4612
4613     # AltiVec flags: The FSF version of GCC differs from the Apple version
4614     if enabled altivec; then
4615         check_cflags -maltivec -mabi=altivec &&
4616         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4617         check_cflags -faltivec
4618
4619         # check if our compiler supports Motorola AltiVec C API
4620         check_cc <<EOF || disable altivec
4621 $inc_altivec_h
4622 int main(void) {
4623     vector signed int v1 = (vector signed int) { 0 };
4624     vector signed int v2 = (vector signed int) { 1 };
4625     v1 = vec_add(v1, v2);
4626     return 0;
4627 }
4628 EOF
4629
4630         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4631     fi
4632
4633     if enabled vsx; then
4634         check_cflags -mvsx
4635     fi
4636 elif enabled x86; then
4637
4638     check_builtin rdtsc    intrin.h   "__rdtsc()"
4639     check_builtin mm_empty mmintrin.h "_mm_empty()"
4640
4641     enable local_aligned_8 local_aligned_16 local_aligned_32
4642
4643     # check whether EBP is available on x86
4644     # As 'i' is stored on the stack, this program will crash
4645     # if the base pointer is used to access it because the
4646     # base pointer is cleared in the inline assembly code.
4647     check_exec_crash <<EOF && enable ebp_available
4648 volatile int i=0;
4649 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4650 return i;
4651 EOF
4652
4653     # check whether EBX is available on x86
4654     check_inline_asm ebx_available '""::"b"(0)' &&
4655         check_inline_asm ebx_available '"":::"%ebx"'
4656
4657     # check whether xmm clobbers are supported
4658     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4659
4660     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4661         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4662
4663     # check whether binutils is new enough to compile SSSE3/MMXEXT
4664     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4665     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4666
4667     if ! disabled_any asm mmx yasm; then
4668         if check_cmd $yasmexe --version; then
4669             enabled x86_64 && yasm_extra="-m amd64"
4670             yasm_debug="-g dwarf2"
4671         elif check_cmd nasm -v; then
4672             yasmexe=nasm
4673             yasm_debug="-g -F dwarf"
4674             if enabled x86_64; then
4675                 case "$objformat" in
4676                     elf)   objformat=elf64 ;;
4677                     win32) objformat=win64 ;;
4678                 esac
4679             fi
4680         fi
4681
4682         YASMFLAGS="-f $objformat $yasm_extra"
4683         enabled pic               && append YASMFLAGS "-DPIC"
4684         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4685         case "$objformat" in
4686             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4687         esac
4688
4689         check_yasm "movbe ecx, [5]" && enable yasm ||
4690             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4691         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4692         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4693         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4694         check_yasm "CPU amdnop" || disable cpunop
4695     fi
4696
4697     case "$cpu" in
4698         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4699             disable fast_clz
4700         ;;
4701     esac
4702
4703 fi
4704
4705 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4706
4707 check_ldflags -Wl,--as-needed
4708 check_ldflags -Wl,-z,noexecstack
4709
4710 if check_func dlopen; then
4711     ldl=
4712 elif check_func dlopen -ldl; then
4713     ldl=-ldl
4714 fi
4715
4716 frei0r_filter_extralibs='$ldl'
4717 frei0r_src_filter_extralibs='$ldl'
4718 ladspa_filter_extralibs='$ldl'
4719 nvenc_encoder_extralibs='$ldl'
4720
4721 if ! disabled network; then
4722     check_func getaddrinfo $network_extralibs
4723     check_func getservbyport $network_extralibs
4724     check_func inet_aton $network_extralibs
4725
4726     check_type netdb.h "struct addrinfo"
4727     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4728     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4729     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4730     check_type poll.h "struct pollfd"
4731     check_type netinet/sctp.h "struct sctp_event_subscribe"
4732     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4733     check_type netinet/in.h "struct sockaddr_in6"
4734     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4735     check_type "sys/types.h sys/socket.h" socklen_t
4736
4737     # Prefer arpa/inet.h over winsock2
4738     if check_header arpa/inet.h ; then
4739         check_func closesocket
4740     elif check_header winsock2.h ; then
4741         check_func_headers winsock2.h closesocket -lws2 &&
4742             network_extralibs="-lws2" ||
4743         { check_func_headers winsock2.h closesocket -lws2_32 &&
4744             network_extralibs="-lws2_32"; } || disable winsock2_h network
4745         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4746
4747         check_type ws2tcpip.h socklen_t
4748         check_type ws2tcpip.h "struct addrinfo"
4749         check_type ws2tcpip.h "struct group_source_req"
4750         check_type ws2tcpip.h "struct ip_mreq_source"
4751         check_type ws2tcpip.h "struct ipv6_mreq"
4752         check_type winsock2.h "struct pollfd"
4753         check_struct winsock2.h "struct sockaddr" sa_len
4754         check_type ws2tcpip.h "struct sockaddr_in6"
4755         check_type ws2tcpip.h "struct sockaddr_storage"
4756     else
4757         disable network
4758     fi
4759 fi
4760
4761 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4762 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4763 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4764 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4765 check_builtin sarestart signal.h "SA_RESTART"
4766 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4767
4768 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4769 check_func  ${malloc_prefix}memalign            && enable memalign
4770 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4771
4772 check_func  access
4773 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4774 check_func  fcntl
4775 check_func  fork
4776 check_func  gethrtime
4777 check_func  getopt
4778 check_func  getrusage
4779 check_func  gettimeofday
4780 check_func  gmtime_r
4781 check_func  isatty
4782 check_func  localtime_r
4783 check_func  mach_absolute_time
4784 check_func  mkstemp
4785 check_func  mmap
4786 check_func  mprotect
4787 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4788 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4789 check_func  sched_getaffinity
4790 check_func  setrlimit
4791 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4792 check_func  strerror_r
4793 check_func  sysconf
4794 check_func  sysctl
4795 check_func  usleep
4796
4797 check_func_headers conio.h kbhit
4798 check_func_headers io.h setmode
4799 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4800 check_func_headers stdlib.h getenv
4801
4802 check_func_headers windows.h CoTaskMemFree -lole32
4803 check_func_headers windows.h GetProcessAffinityMask
4804 check_func_headers windows.h GetProcessTimes
4805 check_func_headers windows.h GetSystemTimeAsFileTime
4806 check_func_headers windows.h MapViewOfFile
4807 check_func_headers windows.h PeekNamedPipe
4808 check_func_headers windows.h SetConsoleTextAttribute
4809 check_func_headers windows.h Sleep
4810 check_func_headers windows.h VirtualAlloc
4811 check_struct windows.h "CONDITION_VARIABLE" Ptr
4812 check_func_headers glob.h glob
4813 enabled xlib &&
4814     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4815
4816 check_header direct.h
4817 check_header dlfcn.h
4818 check_header dxva.h
4819 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4820 check_header io.h
4821 check_header libcrystalhd/libcrystalhd_if.h
4822 check_header mach/mach_time.h
4823 check_header malloc.h
4824 check_header net/udplite.h
4825 check_header poll.h
4826 check_header sys/mman.h
4827 check_header sys/param.h
4828 check_header sys/resource.h
4829 check_header sys/select.h
4830 check_header sys/time.h
4831 check_header sys/un.h
4832 check_header termios.h
4833 check_header unistd.h
4834 check_header vdpau/vdpau.h
4835 check_header vdpau/vdpau_x11.h
4836 check_header VideoDecodeAcceleration/VDADecoder.h
4837 check_header windows.h
4838 check_header X11/extensions/XvMClib.h
4839 check_header asm/types.h
4840
4841 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4842 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4843 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4844
4845 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4846
4847 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4848
4849 if ! disabled w32threads && ! enabled pthreads; then
4850     check_func_headers "windows.h process.h" _beginthreadex &&
4851         enable w32threads || disable w32threads
4852 fi
4853
4854 # check for some common methods of building with pthread support
4855 # do this before the optional library checks as some of them require pthreads
4856 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4857     enable pthreads
4858     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4859         add_cflags -pthread
4860         add_extralibs -pthread
4861     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4862         add_cflags -pthreads
4863         add_extralibs -pthreads
4864     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4865         add_cflags -ldl -pthread
4866         add_extralibs -ldl -pthread
4867     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4868         add_extralibs -lpthreadGC2
4869     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4870         :
4871     elif ! check_func pthread_join && ! check_func pthread_create; then
4872         disable pthreads
4873     fi
4874     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4875 fi
4876
4877