4827a4d9e951ae07a948d5e57dec6b590a78f59c
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-libdcadec       enable DCA decoding via libdcadec [no]
214   --enable-libfaac         enable AAC encoding via libfaac [no]
215   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
216   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
217   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
218   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
219   --enable-libgme          enable Game Music Emu via libgme [no]
220   --enable-libgsm          enable GSM de/encoding via libgsm [no]
221   --enable-libiec61883     enable iec61883 via libiec61883 [no]
222   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
223   --enable-libmfx          enable HW acceleration through libmfx
224   --enable-libmodplug      enable ModPlug via libmodplug [no]
225   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
226   --enable-libnut          enable NUT (de)muxing via libnut,
227                            native (de)muxer exists [no]
228   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
229   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
230   --enable-libopencv       enable video filtering via libopencv [no]
231   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
232   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
233   --enable-libopus         enable Opus de/encoding via libopus [no]
234   --enable-libpulse        enable Pulseaudio input via libpulse [no]
235   --enable-libquvi         enable quvi input via libquvi [no]
236   --enable-librtmp         enable RTMP[E] support via librtmp [no]
237   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
238   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
239   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
240   --enable-libsoxr         enable Include libsoxr resampling [no]
241   --enable-libspeex        enable Speex de/encoding via libspeex [no]
242   --enable-libssh          enable SFTP protocol via libssh [no]
243   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
244   --enable-libtheora       enable Theora encoding via libtheora [no]
245   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
246   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
247   --enable-libv4l2         enable libv4l2/v4l-utils [no]
248   --enable-libvidstab      enable video stabilization using vid.stab [no]
249   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
250   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
251   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
252                            native implementation exists [no]
253   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
254   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
255   --enable-libwebp         enable WebP encoding via libwebp [no]
256   --enable-libx264         enable H.264 encoding via x264 [no]
257   --enable-libx265         enable HEVC encoding via x265 [no]
258   --enable-libxavs         enable AVS encoding via xavs [no]
259   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
260   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
261   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
262   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
263   --enable-libxvid         enable Xvid encoding via xvidcore,
264                            native MPEG-4/Xvid encoder exists [no]
265   --enable-libzmq          enable message passing via libzmq [no]
266   --enable-libzvbi         enable teletext support via libzvbi [no]
267   --disable-lzma           disable lzma [autodetect]
268   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
269   --enable-nvenc           enable NVIDIA NVENC support [no]
270   --enable-openal          enable OpenAL 1.1 capture support [no]
271   --enable-opencl          enable OpenCL code
272   --enable-opengl          enable OpenGL rendering [no]
273   --enable-openssl         enable openssl, needed for https support
274                            if gnutls is not used [no]
275   --disable-sdl            disable sdl [autodetect]
276   --enable-x11grab         enable X11 grabbing (legacy) [no]
277   --disable-xlib           disable xlib [autodetect]
278   --disable-zlib           disable zlib [autodetect]
279
280 Toolchain options:
281   --arch=ARCH              select architecture [$arch]
282   --cpu=CPU                select the minimum required CPU (affects
283                            instruction selection, may crash on older CPUs)
284   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
285   --progs-suffix=SUFFIX    program name suffix []
286   --enable-cross-compile   assume a cross-compiler is used
287   --sysroot=PATH           root of cross-build tree
288   --sysinclude=PATH        location of cross-build system headers
289   --target-os=OS           compiler targets OS [$target_os]
290   --target-exec=CMD        command to run executables on target
291   --target-path=DIR        path to view of build directory on target
292   --target-samples=DIR     path to samples directory on target
293   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
294   --toolchain=NAME         set tool defaults according to NAME
295   --nm=NM                  use nm tool NM [$nm_default]
296   --ar=AR                  use archive tool AR [$ar_default]
297   --as=AS                  use assembler AS [$as_default]
298   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
299   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
300   --cc=CC                  use C compiler CC [$cc_default]
301   --cxx=CXX                use C compiler CXX [$cxx_default]
302   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
303   --ld=LD                  use linker LD [$ld_default]
304   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
305   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
306   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
307   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
308   --host-cc=HOSTCC         use host C compiler HOSTCC
309   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
310   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
311   --host-ld=HOSTLD         use host linker HOSTLD
312   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
313   --host-libs=HLIBS        use libs HLIBS when linking for host
314   --host-os=OS             compiler host OS [$target_os]
315   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
316   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
317   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
318   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
319   --extra-libs=ELIBS       add ELIBS [$ELIBS]
320   --extra-version=STRING   version string suffix []
321   --optflags=OPTFLAGS      override optimization-related compiler flags
322   --build-suffix=SUFFIX    library name suffix []
323   --enable-pic             build position-independent code
324   --enable-thumb           compile for Thumb instruction set
325   --enable-lto             use link-time optimization
326
327 Advanced options (experts only):
328   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
329   --disable-symver         disable symbol versioning
330   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
331   --disable-safe-bitstream-reader
332                            disable buffer boundary checking in bitreaders
333                            (faster, but may crash)
334   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
335   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
336
337 Optimization options (experts only):
338   --disable-asm            disable all assembly optimizations
339   --disable-altivec        disable AltiVec optimizations
340   --disable-amd3dnow       disable 3DNow! optimizations
341   --disable-amd3dnowext    disable 3DNow! extended optimizations
342   --disable-mmx            disable MMX optimizations
343   --disable-mmxext         disable MMXEXT optimizations
344   --disable-sse            disable SSE optimizations
345   --disable-sse2           disable SSE2 optimizations
346   --disable-sse3           disable SSE3 optimizations
347   --disable-ssse3          disable SSSE3 optimizations
348   --disable-sse4           disable SSE4 optimizations
349   --disable-sse42          disable SSE4.2 optimizations
350   --disable-avx            disable AVX optimizations
351   --disable-xop            disable XOP optimizations
352   --disable-fma3           disable FMA3 optimizations
353   --disable-fma4           disable FMA4 optimizations
354   --disable-avx2           disable AVX2 optimizations
355   --disable-armv5te        disable armv5te optimizations
356   --disable-armv6          disable armv6 optimizations
357   --disable-armv6t2        disable armv6t2 optimizations
358   --disable-vfp            disable VFP optimizations
359   --disable-neon           disable NEON optimizations
360   --disable-inline-asm     disable use of inline assembly
361   --disable-yasm           disable use of nasm/yasm assembly
362   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
363   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
364   --disable-mipsfpu        disable floating point MIPS optimizations
365   --disable-fast-unaligned consider unaligned accesses slow
366
367 Developer options (useful when working on FFmpeg itself):
368   --disable-debug          disable debugging symbols
369   --enable-debug=LEVEL     set the debug level [$debuglevel]
370   --disable-optimizations  disable compiler optimizations
371   --enable-extra-warnings  enable more compiler warnings
372   --disable-stripping      disable stripping of executables and shared libraries
373   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
374                            2 causes a slowdown at runtime.
375   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
376   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
377                            leaks and errors, using the specified valgrind binary.
378                            Cannot be combined with --target-exec
379   --enable-ftrapv          Trap arithmetic overflows
380   --samples=PATH           location of test samples for FATE, if not set use
381                            \$FATE_SAMPLES at make invocation time.
382   --enable-neon-clobber-test check NEON registers for clobbering (should be
383                            used only for debugging purposes)
384   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
385                            should be used only for debugging purposes)
386   --enable-random          randomly enable/disable components
387   --disable-random
388   --enable-random=LIST     randomly enable/disable specific components or
389   --disable-random=LIST    component groups. LIST is a comma-separated list
390                            of NAME[:PROB] entries where NAME is a component
391                            (group) and PROB the probability associated with
392                            NAME (default 0.5).
393   --random-seed=VALUE      seed value for --enable/disable-random
394
395 NOTE: Object files are built at the place where configure is launched.
396 EOF
397   exit 0
398 }
399
400 quotes='""'
401
402 log(){
403     echo "$@" >> $logfile
404 }
405
406 log_file(){
407     log BEGIN $1
408     pr -n -t $1 >> $logfile
409     log END $1
410 }
411
412 echolog(){
413     log "$@"
414     echo "$@"
415 }
416
417 warn(){
418     log "WARNING: $*"
419     WARNINGS="${WARNINGS}WARNING: $*\n"
420 }
421
422 die(){
423     echolog "$@"
424     cat <<EOF
425
426 If you think configure made a mistake, make sure you are using the latest
427 version from Git.  If the latest version fails, report the problem to the
428 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
429 EOF
430     if disabled logging; then
431         cat <<EOF
432 Rerun configure with logging enabled (do not use --disable-logging), and
433 include the log this produces with your report.
434 EOF
435     else
436         cat <<EOF
437 Include the log file "$logfile" produced by configure as this will help
438 solve the problem.
439 EOF
440     fi
441     exit 1
442 }
443
444 # Avoid locale weirdness, besides we really just want to translate ASCII.
445 toupper(){
446     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
447 }
448
449 tolower(){
450     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
451 }
452
453 c_escape(){
454     echo "$*" | sed 's/["\\]/\\\0/g'
455 }
456
457 sh_quote(){
458     v=$(echo "$1" | sed "s/'/'\\\\''/g")
459     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
460     echo "$v"
461 }
462
463 cleanws(){
464     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
465 }
466
467 filter(){
468     pat=$1
469     shift
470     for v; do
471         eval "case $v in $pat) echo $v ;; esac"
472     done
473 }
474
475 filter_out(){
476     pat=$1
477     shift
478     for v; do
479         eval "case $v in $pat) ;; *) echo $v ;; esac"
480     done
481 }
482
483 map(){
484     m=$1
485     shift
486     for v; do eval $m; done
487 }
488
489 add_suffix(){
490     suffix=$1
491     shift
492     for v; do echo ${v}${suffix}; done
493 }
494
495 set_all(){
496     value=$1
497     shift
498     for var in $*; do
499         eval $var=$value
500     done
501 }
502
503 set_weak(){
504     value=$1
505     shift
506     for var; do
507         eval : \${$var:=$value}
508     done
509 }
510
511 sanitize_var_name(){
512     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
513 }
514
515 set_safe(){
516     var=$1
517     shift
518     eval $(sanitize_var_name "$var")='$*'
519 }
520
521 get_safe(){
522     eval echo \$$(sanitize_var_name "$1")
523 }
524
525 pushvar(){
526     for pvar in $*; do
527         eval level=\${${pvar}_level:=0}
528         eval ${pvar}_${level}="\$$pvar"
529         eval ${pvar}_level=$(($level+1))
530     done
531 }
532
533 popvar(){
534     for pvar in $*; do
535         eval level=\${${pvar}_level:-0}
536         test $level = 0 && continue
537         eval level=$(($level-1))
538         eval $pvar="\${${pvar}_${level}}"
539         eval ${pvar}_level=$level
540         eval unset ${pvar}_${level}
541     done
542 }
543
544 enable(){
545     set_all yes $*
546 }
547
548 disable(){
549     set_all no $*
550 }
551
552 enable_weak(){
553     set_weak yes $*
554 }
555
556 disable_weak(){
557     set_weak no $*
558 }
559
560 enable_safe(){
561     for var; do
562         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
563     done
564 }
565
566 disable_safe(){
567     for var; do
568         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
569     done
570 }
571
572 do_enable_deep(){
573     for var; do
574         enabled $var && continue
575         eval sel="\$${var}_select"
576         eval sgs="\$${var}_suggest"
577         pushvar var sgs
578         enable_deep $sel
579         popvar sgs
580         enable_deep_weak $sgs
581         popvar var
582     done
583 }
584
585 enable_deep(){
586     do_enable_deep $*
587     enable $*
588 }
589
590 enable_deep_weak(){
591     for var; do
592         disabled $var && continue
593         pushvar var
594         do_enable_deep $var
595         popvar var
596         enable_weak $var
597     done
598 }
599
600 enabled(){
601     test "${1#!}" = "$1" && op== || op=!=
602     eval test "x\$${1#!}" $op "xyes"
603 }
604
605 disabled(){
606     test "${1#!}" = "$1" && op== || op=!=
607     eval test "x\$${1#!}" $op "xno"
608 }
609
610 enabled_all(){
611     for opt; do
612         enabled $opt || return 1
613     done
614 }
615
616 disabled_all(){
617     for opt; do
618         disabled $opt || return 1
619     done
620 }
621
622 enabled_any(){
623     for opt; do
624         enabled $opt && return 0
625     done
626 }
627
628 disabled_any(){
629     for opt; do
630         disabled $opt && return 0
631     done
632     return 1
633 }
634
635 set_default(){
636     for opt; do
637         eval : \${$opt:=\$${opt}_default}
638     done
639 }
640
641 is_in(){
642     value=$1
643     shift
644     for var in $*; do
645         [ $var = $value ] && return 0
646     done
647     return 1
648 }
649
650 do_check_deps(){
651     for cfg; do
652         cfg="${cfg#!}"
653         enabled ${cfg}_checking && die "Circular dependency for $cfg."
654         disabled ${cfg}_checking && continue
655         enable ${cfg}_checking
656         append allopts $cfg
657
658         eval dep_all="\$${cfg}_deps"
659         eval dep_any="\$${cfg}_deps_any"
660         eval dep_sel="\$${cfg}_select"
661         eval dep_sgs="\$${cfg}_suggest"
662         eval dep_ifa="\$${cfg}_if"
663         eval dep_ifn="\$${cfg}_if_any"
664
665         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
666         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
667         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
668
669         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
670         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
671         enabled_all  $dep_all || disable $cfg
672         enabled_any  $dep_any || disable $cfg
673         disabled_any $dep_sel && disable $cfg
674
675         if enabled $cfg; then
676             enable_deep $dep_sel
677             enable_deep_weak $dep_sgs
678         fi
679
680         disable ${cfg}_checking
681     done
682 }
683
684 check_deps(){
685     unset allopts
686
687     do_check_deps "$@"
688
689     for cfg in $allopts; do
690         enabled $cfg || continue
691         eval dep_extralibs="\$${cfg}_extralibs"
692         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
693     done
694 }
695
696 print_config(){
697     pfx=$1
698     files=$2
699     shift 2
700     map 'eval echo "$v \${$v:-no}"' "$@" |
701     awk "BEGIN { split(\"$files\", files) }
702         {
703             c = \"$pfx\" toupper(\$1);
704             v = \$2;
705             sub(/yes/, 1, v);
706             sub(/no/,  0, v);
707             for (f in files) {
708                 file = files[f];
709                 if (file ~ /\\.h\$/) {
710                     printf(\"#define %s %d\\n\", c, v) >>file;
711                 } else if (file ~ /\\.asm\$/) {
712                     printf(\"%%define %s %d\\n\", c, v) >>file;
713                 } else if (file ~ /\\.mak\$/) {
714                     n = -v ? \"\" : \"!\";
715                     printf(\"%s%s=yes\\n\", n, c) >>file;
716                 } else if (file ~ /\\.texi\$/) {
717                     pre = -v ? \"\" : \"@c \";
718                     yesno = \$2;
719                     c2 = tolower(c);
720                     gsub(/_/, \"-\", c2);
721                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
722                 }
723             }
724         }"
725 }
726
727 print_enabled(){
728     suf=$1
729     shift
730     for v; do
731         enabled $v && printf "%s\n" ${v%$suf};
732     done
733 }
734
735 append(){
736     var=$1
737     shift
738     eval "$var=\"\$$var $*\""
739 }
740
741 prepend(){
742     var=$1
743     shift
744     eval "$var=\"$* \$$var\""
745 }
746
747 unique(){
748     var=$1
749     uniq_list=""
750     for tok in $(eval echo \$$var); do
751         uniq_list="$(filter_out $tok $uniq_list) $tok"
752     done
753     eval "$var=\"${uniq_list}\""
754 }
755
756 add_cppflags(){
757     append CPPFLAGS "$@"
758 }
759
760 add_cflags(){
761     append CFLAGS $($cflags_filter "$@")
762 }
763
764 add_cxxflags(){
765     append CXXFLAGS $($cflags_filter "$@")
766 }
767
768 add_asflags(){
769     append ASFLAGS $($asflags_filter "$@")
770 }
771
772 add_ldflags(){
773     append LDFLAGS $($ldflags_filter "$@")
774 }
775
776 add_ldexeflags(){
777     append LDEXEFLAGS $($ldflags_filter "$@")
778 }
779
780 add_stripflags(){
781     append ASMSTRIPFLAGS "$@"
782 }
783
784 add_extralibs(){
785     prepend extralibs $($ldflags_filter "$@")
786 }
787
788 add_host_cppflags(){
789     append host_cppflags "$@"
790 }
791
792 add_host_cflags(){
793     append host_cflags $($host_cflags_filter "$@")
794 }
795
796 add_host_ldflags(){
797     append host_ldflags $($host_ldflags_filter "$@")
798 }
799
800 add_compat(){
801     append compat_objs $1
802     shift
803     map 'add_cppflags -D$v' "$@"
804 }
805
806 check_cmd(){
807     log "$@"
808     "$@" >> $logfile 2>&1
809 }
810
811 check_stat(){
812     log check_stat "$@"
813     stat "$1" >> $logfile 2>&1
814 }
815
816 cc_o(){
817     eval printf '%s\\n' $CC_O
818 }
819
820 cc_e(){
821     eval printf '%s\\n' $CC_E
822 }
823
824 check_cc(){
825     log check_cc "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
829 }
830
831 check_cxx(){
832     log check_cxx "$@"
833     cat > $TMPCPP
834     log_file $TMPCPP
835     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
836 }
837
838 check_oc(){
839     log check_oc "$@"
840     cat > $TMPM
841     log_file $TMPM
842     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
843 }
844
845 check_cpp(){
846     log check_cpp "$@"
847     cat > $TMPC
848     log_file $TMPC
849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
850 }
851
852 as_o(){
853     eval printf '%s\\n' $AS_O
854 }
855
856 check_as(){
857     log check_as "$@"
858     cat > $TMPS
859     log_file $TMPS
860     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
861 }
862
863 check_inline_asm(){
864     log check_inline_asm "$@"
865     name="$1"
866     code="$2"
867     shift 2
868     disable $name
869     check_cc "$@" <<EOF && enable $name
870 void foo(void){ __asm__ volatile($code); }
871 EOF
872 }
873
874 check_insn(){
875     log check_insn "$@"
876     check_inline_asm ${1}_inline "\"$2\""
877     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
878 }
879
880 check_yasm(){
881     log check_yasm "$@"
882     echo "$1" > $TMPS
883     log_file $TMPS
884     shift 1
885     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
886 }
887
888 ld_o(){
889     eval printf '%s\\n' $LD_O
890 }
891
892 check_ld(){
893     log check_ld "$@"
894     type=$1
895     shift 1
896     flags=$(filter_out '-l*|*.so' $@)
897     libs=$(filter '-l*|*.so' $@)
898     check_$type $($cflags_filter $flags) || return
899     flags=$($ldflags_filter $flags)
900     libs=$($ldflags_filter $libs)
901     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
902 }
903
904 print_include(){
905     hdr=$1
906     test "${hdr%.h}" = "${hdr}" &&
907         echo "#include $hdr"    ||
908         echo "#include <$hdr>"
909 }
910
911 check_code(){
912     log check_code "$@"
913     check=$1
914     headers=$2
915     code=$3
916     shift 3
917     {
918         for hdr in $headers; do
919             print_include $hdr
920         done
921         echo "int main(void) { $code; return 0; }"
922     } | check_$check "$@"
923 }
924
925 check_cppflags(){
926     log check_cppflags "$@"
927     check_cc "$@" <<EOF && append CPPFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_cflags(){
933     log test_cflags "$@"
934     set -- $($cflags_filter "$@")
935     check_cc "$@" <<EOF
936 int x;
937 EOF
938 }
939
940 check_cflags(){
941     log check_cflags "$@"
942     test_cflags "$@" && add_cflags "$@"
943 }
944
945 check_cxxflags(){
946     log check_cxxflags "$@"
947     set -- $($cflags_filter "$@")
948     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
949 int x;
950 EOF
951 }
952
953 test_ldflags(){
954     log test_ldflags "$@"
955     check_ld "cc" "$@" <<EOF
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_ldflags(){
961     log check_ldflags "$@"
962     test_ldflags "$@" && add_ldflags "$@"
963 }
964
965 test_stripflags(){
966     log test_stripflags "$@"
967     # call check_cc to get a fresh TMPO
968     check_cc <<EOF
969 int main(void) { return 0; }
970 EOF
971     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
972 }
973
974 check_stripflags(){
975     log check_stripflags "$@"
976     test_stripflags "$@" && add_stripflags "$@"
977 }
978
979 check_header(){
980     log check_header "$@"
981     header=$1
982     shift
983     disable_safe $header
984     check_cpp "$@" <<EOF && enable_safe $header
985 #include <$header>
986 int x;
987 EOF
988 }
989
990 check_header_oc(){
991     log check_header_oc "$@"
992     rm -f -- "$TMPO"
993     header=$1
994     shift
995     disable_safe $header
996     {
997        echo "#include <$header>"
998        echo "int main(void) { return 0; }"
999     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1000 }
1001
1002 check_func(){
1003     log check_func "$@"
1004     func=$1
1005     shift
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 extern int $func();
1009 int main(void){ $func(); }
1010 EOF
1011 }
1012
1013 check_mathfunc(){
1014     log check_mathfunc "$@"
1015     func=$1
1016     narg=$2
1017     shift 2
1018     test $narg = 2 && args="f, g" || args="f"
1019     disable $func
1020     check_ld "cc" "$@" <<EOF && enable $func
1021 #include <math.h>
1022 float foo(float f, float g) { return $func($args); }
1023 int main(void){ return (int) foo; }
1024 EOF
1025 }
1026
1027 check_func_headers(){
1028     log check_func_headers "$@"
1029     headers=$1
1030     funcs=$2
1031     shift 2
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         for func in $funcs; do
1037             echo "long check_$func(void) { return (long) $func; }"
1038         done
1039         echo "int main(void) { return 0; }"
1040     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_class_headers_cpp(){
1044     log check_class_headers_cpp "$@"
1045     headers=$1
1046     classes=$2
1047     shift 2
1048     {
1049         for hdr in $headers; do
1050             echo "#include <$hdr>"
1051         done
1052         echo "int main(void) { "
1053         i=1
1054         for class in $classes; do
1055             echo "$class obj$i;"
1056             i=$(expr $i + 1)
1057         done
1058         echo "return 0; }"
1059     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1060 }
1061
1062 check_cpp_condition(){
1063     log check_cpp_condition "$@"
1064     header=$1
1065     condition=$2
1066     shift 2
1067     check_cpp "$@" <<EOF
1068 #include <$header>
1069 #if !($condition)
1070 #error "unsatisfied condition: $condition"
1071 #endif
1072 EOF
1073 }
1074
1075 check_lib(){
1076     log check_lib "$@"
1077     header="$1"
1078     func="$2"
1079     shift 2
1080     check_header $header && check_func $func "$@" && add_extralibs "$@"
1081 }
1082
1083 check_lib2(){
1084     log check_lib2 "$@"
1085     headers="$1"
1086     funcs="$2"
1087     shift 2
1088     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1089 }
1090
1091 check_lib_cpp(){
1092     log check_lib_cpp "$@"
1093     headers="$1"
1094     classes="$2"
1095     shift 2
1096     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1097 }
1098
1099 check_pkg_config(){
1100     log check_pkg_config "$@"
1101     pkgandversion="$1"
1102     pkg="${1%% *}"
1103     headers="$2"
1104     funcs="$3"
1105     shift 3
1106     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1107     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1108     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1109     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1110         set_safe ${pkg}_cflags $pkg_cflags   &&
1111         set_safe ${pkg}_libs   $pkg_libs
1112 }
1113
1114 check_exec(){
1115     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1116 }
1117
1118 check_exec_crash(){
1119     code=$(cat)
1120
1121     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1122     # are safe but may not be available everywhere.  Thus we use
1123     # raise(SIGTERM) instead.  The check is run in a subshell so we
1124     # can redirect the "Terminated" message from the shell.  SIGBUS
1125     # is not defined by standard C so it is used conditionally.
1126
1127     (check_exec "$@") >> $logfile 2>&1 <<EOF
1128 #include <signal.h>
1129 static void sighandler(int sig){
1130     raise(SIGTERM);
1131 }
1132 int foo(void){
1133     $code
1134 }
1135 int (*func_ptr)(void) = foo;
1136 int main(void){
1137     signal(SIGILL, sighandler);
1138     signal(SIGFPE, sighandler);
1139     signal(SIGSEGV, sighandler);
1140 #ifdef SIGBUS
1141     signal(SIGBUS, sighandler);
1142 #endif
1143     return func_ptr();
1144 }
1145 EOF
1146 }
1147
1148 check_type(){
1149     log check_type "$@"
1150     headers=$1
1151     type=$2
1152     shift 2
1153     disable_safe "$type"
1154     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1155 }
1156
1157 check_struct(){
1158     log check_struct "$@"
1159     headers=$1
1160     struct=$2
1161     member=$3
1162     shift 3
1163     disable_safe "${struct}_${member}"
1164     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1165         enable_safe "${struct}_${member}"
1166 }
1167
1168 check_builtin(){
1169     log check_builtin "$@"
1170     name=$1
1171     headers=$2
1172     builtin=$3
1173     shift 3
1174     disable "$name"
1175     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1176 }
1177
1178 check_compile_assert(){
1179     log check_compile_assert "$@"
1180     name=$1
1181     headers=$2
1182     condition=$3
1183     shift 3
1184     disable "$name"
1185     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1186 }
1187
1188 require(){
1189     name="$1"
1190     header="$2"
1191     func="$3"
1192     shift 3
1193     check_lib $header $func "$@" || die "ERROR: $name not found"
1194 }
1195
1196 require2(){
1197     name="$1"
1198     headers="$2"
1199     func="$3"
1200     shift 3
1201     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1202 }
1203
1204 require_cpp(){
1205     name="$1"
1206     headers="$2"
1207     classes="$3"
1208     shift 3
1209     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1210 }
1211
1212 use_pkg_config(){
1213     pkg="$1"
1214     check_pkg_config "$@" || return 1
1215     add_cflags    $(get_safe ${pkg}_cflags)
1216     add_extralibs $(get_safe ${pkg}_libs)
1217 }
1218
1219 require_pkg_config(){
1220     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1221 }
1222
1223 require_libfreetype(){
1224     log require_libfreetype "$@"
1225     pkg="freetype2"
1226     check_cmd $pkg_config --exists --print-errors $pkg \
1227       || die "ERROR: $pkg not found"
1228     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1229     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1230     {
1231         echo "#include <ft2build.h>"
1232         echo "#include FT_FREETYPE_H"
1233         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1234         echo "int main(void) { return 0; }"
1235     } | check_ld "cc" $pkg_cflags $pkg_libs \
1236       && set_safe ${pkg}_cflags $pkg_cflags \
1237       && set_safe ${pkg}_libs   $pkg_libs \
1238       || die "ERROR: $pkg not found"
1239     add_cflags    $(get_safe ${pkg}_cflags)
1240     add_extralibs $(get_safe ${pkg}_libs)
1241 }
1242
1243 hostcc_e(){
1244     eval printf '%s\\n' $HOSTCC_E
1245 }
1246
1247 hostcc_o(){
1248     eval printf '%s\\n' $HOSTCC_O
1249 }
1250
1251 check_host_cc(){
1252     log check_host_cc "$@"
1253     cat > $TMPC
1254     log_file $TMPC
1255     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1256 }
1257
1258 check_host_cpp(){
1259     log check_host_cpp "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1263 }
1264
1265 check_host_cppflags(){
1266     log check_host_cppflags "$@"
1267     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1268 int x;
1269 EOF
1270 }
1271
1272 check_host_cflags(){
1273     log check_host_cflags "$@"
1274     set -- $($host_cflags_filter "$@")
1275     check_host_cc "$@" <<EOF && append host_cflags "$@"
1276 int x;
1277 EOF
1278 }
1279
1280 check_host_cpp_condition(){
1281     log check_host_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     check_host_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 apply(){
1294     file=$1
1295     shift
1296     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1297 }
1298
1299 cp_if_changed(){
1300     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1301     mkdir -p "$(dirname $2)"
1302     $cp_f "$1" "$2"
1303 }
1304
1305 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1306 # system-dependent things.
1307
1308 COMPONENT_LIST="
1309     bsfs
1310     decoders
1311     demuxers
1312     encoders
1313     filters
1314     hwaccels
1315     indevs
1316     muxers
1317     outdevs
1318     parsers
1319     protocols
1320 "
1321
1322 EXAMPLE_LIST="
1323     avio_reading_example
1324     decoding_encoding_example
1325     demuxing_decoding_example
1326     extract_mvs_example
1327     filter_audio_example
1328     filtering_audio_example
1329     filtering_video_example
1330     metadata_example
1331     muxing_example
1332     qsvdec_example
1333     remuxing_example
1334     resampling_audio_example
1335     scaling_video_example
1336     transcode_aac_example
1337     transcoding_example
1338 "
1339
1340 EXTERNAL_LIBRARY_LIST="
1341     avisynth
1342     bzlib
1343     crystalhd
1344     decklink
1345     frei0r
1346     gnutls
1347     iconv
1348     ladspa
1349     libaacplus
1350     libass
1351     libbluray
1352     libbs2b
1353     libcaca
1354     libcdio
1355     libcelt
1356     libdc1394
1357     libdcadec
1358     libfaac
1359     libfdk_aac
1360     libflite
1361     libfontconfig
1362     libfreetype
1363     libfribidi
1364     libgme
1365     libgsm
1366     libiec61883
1367     libilbc
1368     libmfx
1369     libmodplug
1370     libmp3lame
1371     libnut
1372     libopencore_amrnb
1373     libopencore_amrwb
1374     libopencv
1375     libopenh264
1376     libopenjpeg
1377     libopus
1378     libpulse
1379     libquvi
1380     librtmp
1381     libschroedinger
1382     libshine
1383     libsmbclient
1384     libsoxr
1385     libspeex
1386     libssh
1387     libstagefright_h264
1388     libtheora
1389     libtwolame
1390     libutvideo
1391     libv4l2
1392     libvidstab
1393     libvo_aacenc
1394     libvo_amrwbenc
1395     libvorbis
1396     libvpx
1397     libwavpack
1398     libwebp
1399     libx264
1400     libx265
1401     libxavs
1402     libxcb
1403     libxcb_shm
1404     libxcb_shape
1405     libxcb_xfixes
1406     libxvid
1407     libzmq
1408     libzvbi
1409     lzma
1410     nvenc
1411     openal
1412     opencl
1413     opengl
1414     openssl
1415     sdl
1416     x11grab
1417     xlib
1418     zlib
1419 "
1420
1421 DOCUMENT_LIST="
1422     doc
1423     htmlpages
1424     manpages
1425     podpages
1426     txtpages
1427 "
1428
1429 FEATURE_LIST="
1430     ftrapv
1431     gray
1432     hardcoded_tables
1433     runtime_cpudetect
1434     safe_bitstream_reader
1435     shared
1436     small
1437     static
1438     swscale_alpha
1439 "
1440
1441 HWACCEL_LIST="
1442     dxva2
1443     vaapi
1444     vda
1445     vdpau
1446     xvmc
1447 "
1448
1449 LIBRARY_LIST="
1450     avcodec
1451     avdevice
1452     avfilter
1453     avformat
1454     avresample
1455     avutil
1456     postproc
1457     swresample
1458     swscale
1459 "
1460
1461 LICENSE_LIST="
1462     gpl
1463     nonfree
1464     version3
1465 "
1466
1467 PROGRAM_LIST="
1468     ffplay
1469     ffprobe
1470     ffserver
1471     ffmpeg
1472 "
1473
1474 SUBSYSTEM_LIST="
1475     dct
1476     dwt
1477     error_resilience
1478     faan
1479     fast_unaligned
1480     fft
1481     lsp
1482     lzo
1483     mdct
1484     pixelutils
1485     network
1486     rdft
1487 "
1488
1489 CONFIG_LIST="
1490     $COMPONENT_LIST
1491     $DOCUMENT_LIST
1492     $EXAMPLE_LIST
1493     $EXTERNAL_LIBRARY_LIST
1494     $FEATURE_LIST
1495     $HWACCEL_LIST
1496     $LICENSE_LIST
1497     $LIBRARY_LIST
1498     $PROGRAM_LIST
1499     $SUBSYSTEM_LIST
1500     fontconfig
1501     incompatible_libav_abi
1502     memalign_hack
1503     memory_poisoning
1504     neon_clobber_test
1505     pic
1506     pod2man
1507     raise_major
1508     thumb
1509     xmm_clobber_test
1510 "
1511
1512 THREADS_LIST="
1513     pthreads
1514     os2threads
1515     w32threads
1516 "
1517
1518 ATOMICS_LIST="
1519     atomics_gcc
1520     atomics_suncc
1521     atomics_win32
1522 "
1523
1524 ARCH_LIST="
1525     aarch64
1526     alpha
1527     arm
1528     avr32
1529     avr32_ap
1530     avr32_uc
1531     bfin
1532     ia64
1533     m68k
1534     mips
1535     mips64
1536     parisc
1537     ppc
1538     ppc64
1539     s390
1540     sh4
1541     sparc
1542     sparc64
1543     tilegx
1544     tilepro
1545     tomi
1546     x86
1547     x86_32
1548     x86_64
1549 "
1550
1551 ARCH_EXT_LIST_ARM="
1552     armv5te
1553     armv6
1554     armv6t2
1555     armv8
1556     neon
1557     vfp
1558     vfpv3
1559     setend
1560 "
1561
1562 ARCH_EXT_LIST_MIPS="
1563     mipsfpu
1564     mips32r2
1565     mipsdspr1
1566     mipsdspr2
1567 "
1568
1569 ARCH_EXT_LIST_X86_SIMD="
1570     amd3dnow
1571     amd3dnowext
1572     avx
1573     avx2
1574     fma3
1575     fma4
1576     mmx
1577     mmxext
1578     sse
1579     sse2
1580     sse3
1581     sse4
1582     sse42
1583     ssse3
1584     xop
1585 "
1586
1587 ARCH_EXT_LIST_PPC="
1588     altivec
1589     dcbzl
1590     ldbrx
1591     ppc4xx
1592     vsx
1593 "
1594
1595 ARCH_EXT_LIST_X86="
1596     $ARCH_EXT_LIST_X86_SIMD
1597     cpunop
1598     i686
1599 "
1600
1601 ARCH_EXT_LIST="
1602     $ARCH_EXT_LIST_ARM
1603     $ARCH_EXT_LIST_PPC
1604     $ARCH_EXT_LIST_X86
1605     $ARCH_EXT_LIST_MIPS
1606     loongson
1607 "
1608
1609 ARCH_FEATURES="
1610     aligned_stack
1611     fast_64bit
1612     fast_clz
1613     fast_cmov
1614     local_aligned_8
1615     local_aligned_16
1616     local_aligned_32
1617     simd_align_16
1618 "
1619
1620 BUILTIN_LIST="
1621     atomic_cas_ptr
1622     atomic_compare_exchange
1623     machine_rw_barrier
1624     MemoryBarrier
1625     mm_empty
1626     rdtsc
1627     sarestart
1628     sync_val_compare_and_swap
1629 "
1630 HAVE_LIST_CMDLINE="
1631     inline_asm
1632     symver
1633     yasm
1634 "
1635
1636 HAVE_LIST_PUB="
1637     bigendian
1638     fast_unaligned
1639     incompatible_libav_abi
1640 "
1641
1642 HEADERS_LIST="
1643     alsa_asoundlib_h
1644     altivec_h
1645     arpa_inet_h
1646     asm_types_h
1647     cdio_paranoia_h
1648     cdio_paranoia_paranoia_h
1649     dev_bktr_ioctl_bt848_h
1650     dev_bktr_ioctl_meteor_h
1651     dev_ic_bt8xx_h
1652     dev_video_bktr_ioctl_bt848_h
1653     dev_video_meteor_ioctl_meteor_h
1654     direct_h
1655     dlfcn_h
1656     dxva_h
1657     ES2_gl_h
1658     gsm_h
1659     io_h
1660     mach_mach_time_h
1661     machine_ioctl_bt848_h
1662     machine_ioctl_meteor_h
1663     malloc_h
1664     openjpeg_1_5_openjpeg_h
1665     OpenGL_gl3_h
1666     poll_h
1667     sndio_h
1668     soundcard_h
1669     sys_mman_h
1670     sys_param_h
1671     sys_resource_h
1672     sys_select_h
1673     sys_soundcard_h
1674     sys_time_h
1675     sys_un_h
1676     sys_videoio_h
1677     termios_h
1678     udplite_h
1679     unistd_h
1680     windows_h
1681     winsock2_h
1682 "
1683
1684 INTRINSICS_LIST="
1685     intrinsics_neon
1686 "
1687
1688 MATH_FUNCS="
1689     atanf
1690     atan2f
1691     cbrt
1692     cbrtf
1693     cosf
1694     exp2
1695     exp2f
1696     expf
1697     isinf
1698     isnan
1699     ldexpf
1700     llrint
1701     llrintf
1702     log2
1703     log2f
1704     log10f
1705     lrint
1706     lrintf
1707     powf
1708     rint
1709     round
1710     roundf
1711     sinf
1712     trunc
1713     truncf
1714 "
1715
1716 SYSTEM_FUNCS="
1717     access
1718     aligned_malloc
1719     clock_gettime
1720     closesocket
1721     CommandLineToArgvW
1722     CoTaskMemFree
1723     CryptGenRandom
1724     dlopen
1725     fcntl
1726     flt_lim
1727     fork
1728     getaddrinfo
1729     gethrtime
1730     getopt
1731     GetProcessAffinityMask
1732     GetProcessMemoryInfo
1733     GetProcessTimes
1734     getrusage
1735     getservbyport
1736     GetSystemTimeAsFileTime
1737     gettimeofday
1738     glob
1739     glXGetProcAddress
1740     gmtime_r
1741     inet_aton
1742     isatty
1743     jack_port_get_latency_range
1744     kbhit
1745     localtime_r
1746     lzo1x_999_compress
1747     mach_absolute_time
1748     MapViewOfFile
1749     memalign
1750     mkstemp
1751     mmap
1752     mprotect
1753     nanosleep
1754     PeekNamedPipe
1755     posix_memalign
1756     pthread_cancel
1757     sched_getaffinity
1758     SetConsoleTextAttribute
1759     setmode
1760     setrlimit
1761     Sleep
1762     strerror_r
1763     sysconf
1764     sysctl
1765     usleep
1766     VirtualAlloc
1767     wglGetProcAddress
1768 "
1769
1770 TOOLCHAIN_FEATURES="
1771     as_dn_directive
1772     as_func
1773     as_object_arch
1774     asm_mod_q
1775     attribute_may_alias
1776     attribute_packed
1777     ebp_available
1778     ebx_available
1779     gnu_as
1780     gnu_windres
1781     ibm_asm
1782     inline_asm_labels
1783     inline_asm_nonlocal_labels
1784     inline_asm_direct_symbol_refs
1785     pragma_deprecated
1786     rsync_contimeout
1787     symver_asm_label
1788     symver_gnu_asm
1789     vfp_args
1790     xform_asm
1791     xmm_clobbers
1792 "
1793
1794 TYPES_LIST="
1795     CONDITION_VARIABLE_Ptr
1796     DXVA_PicParams_HEVC
1797     socklen_t
1798     struct_addrinfo
1799     struct_group_source_req
1800     struct_ip_mreq_source
1801     struct_ipv6_mreq
1802     struct_pollfd
1803     struct_rusage_ru_maxrss
1804     struct_sctp_event_subscribe
1805     struct_sockaddr_in6
1806     struct_sockaddr_sa_len
1807     struct_sockaddr_storage
1808     struct_stat_st_mtim_tv_nsec
1809     struct_v4l2_frmivalenum_discrete
1810 "
1811
1812 HAVE_LIST="
1813     $ARCH_EXT_LIST
1814     $(add_suffix _external $ARCH_EXT_LIST)
1815     $(add_suffix _inline   $ARCH_EXT_LIST)
1816     $ARCH_FEATURES
1817     $ATOMICS_LIST
1818     $BUILTIN_LIST
1819     $HAVE_LIST_CMDLINE
1820     $HAVE_LIST_PUB
1821     $HEADERS_LIST
1822     $INTRINSICS_LIST
1823     $MATH_FUNCS
1824     $SYSTEM_FUNCS
1825     $THREADS_LIST
1826     $TOOLCHAIN_FEATURES
1827     $TYPES_LIST
1828     atomics_native
1829     dos_paths
1830     dxva2api_cobj
1831     dxva2_lib
1832     libc_msvcrt
1833     libdc1394_1
1834     libdc1394_2
1835     makeinfo
1836     makeinfo_html
1837     perl
1838     pod2man
1839     sdl
1840     section_data_rel_ro
1841     texi2html
1842     threads
1843     vaapi_x11
1844     vdpau_x11
1845     xlib
1846 "
1847
1848 # options emitted with CONFIG_ prefix but not available on the command line
1849 CONFIG_EXTRA="
1850     aandcttables
1851     ac3dsp
1852     audio_frame_queue
1853     audiodsp
1854     blockdsp
1855     bswapdsp
1856     cabac
1857     dvprofile
1858     exif
1859     faandct
1860     faanidct
1861     fdctdsp
1862     fmtconvert
1863     frame_thread_encoder
1864     gcrypt
1865     golomb
1866     gplv3
1867     h263dsp
1868     h264chroma
1869     h264dsp
1870     h264pred
1871     h264qpel
1872     hpeldsp
1873     huffman
1874     huffyuvdsp
1875     huffyuvencdsp
1876     idctdsp
1877     iirfilter
1878     imdct15
1879     intrax8
1880     lgplv3
1881     llauddsp
1882     llviddsp
1883     lpc
1884     me_cmp
1885     mpeg_er
1886     mpegaudio
1887     mpegaudiodsp
1888     mpegvideo
1889     mpegvideoenc
1890     nettle
1891     pixblockdsp
1892     qpeldsp
1893     qsv
1894     rangecoder
1895     riffdec
1896     riffenc
1897     rtpdec
1898     rtpenc_chain
1899     sinewin
1900     startcode
1901     tpeldsp
1902     videodsp
1903     vp3dsp
1904     wma_freqs
1905 "
1906
1907 CMDLINE_SELECT="
1908     $ARCH_EXT_LIST
1909     $CONFIG_LIST
1910     $HAVE_LIST_CMDLINE
1911     $THREADS_LIST
1912     asm
1913     cross_compile
1914     debug
1915     extra_warnings
1916     logging
1917     lto
1918     optimizations
1919     rpath
1920     stripping
1921 "
1922
1923 PATHS_LIST="
1924     bindir
1925     datadir
1926     docdir
1927     incdir
1928     libdir
1929     mandir
1930     prefix
1931     shlibdir
1932 "
1933
1934 CMDLINE_SET="
1935     $PATHS_LIST
1936     ar
1937     arch
1938     as
1939     assert_level
1940     build_suffix
1941     cc
1942     cpu
1943     cross_prefix
1944     cxx
1945     dep_cc
1946     doxygen
1947     extra_version
1948     gas
1949     host_cc
1950     host_cflags
1951     host_ld
1952     host_ldflags
1953     host_libs
1954     host_os
1955     install
1956     ld
1957     logfile
1958     malloc_prefix
1959     nm
1960     optflags
1961     pkg_config
1962     pkg_config_flags
1963     progs_suffix
1964     random_seed
1965     ranlib
1966     samples
1967     strip
1968     sws_max_filter_size
1969     sysinclude
1970     sysroot
1971     target_exec
1972     target_os
1973     target_path
1974     target_samples
1975     tempprefix
1976     toolchain
1977     valgrind
1978     yasmexe
1979 "
1980
1981 CMDLINE_APPEND="
1982     extra_cflags
1983     extra_cxxflags
1984     host_cppflags
1985 "
1986
1987 # code dependency declarations
1988
1989 # architecture extensions
1990
1991 armv5te_deps="arm"
1992 armv6_deps="arm"
1993 armv6t2_deps="arm"
1994 armv8_deps="aarch64"
1995 neon_deps_any="aarch64 arm"
1996 intrinsics_neon_deps="neon"
1997 vfp_deps_any="aarch64 arm"
1998 vfpv3_deps="vfp"
1999 setend_deps="arm"
2000
2001 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2002
2003 mipsfpu_deps="mips"
2004 mipsdspr1_deps="mips"
2005 mipsdspr2_deps="mips"
2006
2007 altivec_deps="ppc"
2008 ppc4xx_deps="ppc"
2009 vsx_deps="ppc"
2010
2011 cpunop_deps="i686"
2012 x86_64_select="i686"
2013 x86_64_suggest="fast_cmov"
2014
2015 amd3dnow_deps="mmx"
2016 amd3dnowext_deps="amd3dnow"
2017 i686_deps="x86"
2018 mmx_deps="x86"
2019 mmxext_deps="mmx"
2020 sse_deps="mmxext"
2021 sse2_deps="sse"
2022 sse3_deps="sse2"
2023 ssse3_deps="sse3"
2024 sse4_deps="ssse3"
2025 sse42_deps="sse4"
2026 avx_deps="sse42"
2027 xop_deps="avx"
2028 fma3_deps="avx"
2029 fma4_deps="avx"
2030 avx2_deps="avx"
2031
2032 mmx_external_deps="yasm"
2033 mmx_inline_deps="inline_asm"
2034 mmx_suggest="mmx_external mmx_inline"
2035
2036 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2037     eval dep=\$${ext}_deps
2038     eval ${ext}_external_deps='"${dep}_external"'
2039     eval ${ext}_inline_deps='"${dep}_inline"'
2040     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2041 done
2042
2043 aligned_stack_if_any="aarch64 ppc x86"
2044 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2045 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2046 fast_unaligned_if_any="aarch64 ppc x86"
2047 simd_align_16_if_any="altivec neon sse"
2048
2049 # system capabilities
2050
2051 symver_if_any="symver_asm_label symver_gnu_asm"
2052
2053 # threading support
2054 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2055 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2056 atomics_win32_if="MemoryBarrier"
2057 atomics_native_if_any="$ATOMICS_LIST"
2058 w32threads_deps="atomics_native"
2059 threads_if_any="$THREADS_LIST"
2060
2061 # subsystems
2062 dct_select="rdft"
2063 error_resilience_select="me_cmp"
2064 faandct_deps="faan fdctdsp"
2065 faanidct_deps="faan idctdsp"
2066 frame_thread_encoder_deps="encoders threads"
2067 intrax8_select="error_resilience"
2068 mdct_select="fft"
2069 rdft_select="fft"
2070 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2071 mpeg_er_select="error_resilience"
2072 mpegaudio_select="mpegaudiodsp"
2073 mpegaudiodsp_select="dct"
2074 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2075 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2076
2077 # decoders / encoders
2078 aac_decoder_select="imdct15 mdct sinewin"
2079 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2080 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2081 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2082 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2083 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2084 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2085 aic_decoder_select="golomb idctdsp"
2086 alac_encoder_select="lpc"
2087 als_decoder_select="bswapdsp"
2088 amrnb_decoder_select="lsp"
2089 amrwb_decoder_select="lsp"
2090 amv_decoder_select="sp5x_decoder exif"
2091 amv_encoder_select="aandcttables mpegvideoenc"
2092 ape_decoder_select="bswapdsp llauddsp"
2093 apng_decoder_select="zlib"
2094 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2095 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2096 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2097 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2098 atrac1_decoder_select="mdct sinewin"
2099 atrac3_decoder_select="mdct"
2100 atrac3p_decoder_select="mdct sinewin"
2101 avrn_decoder_select="exif"
2102 bink_decoder_select="blockdsp hpeldsp"
2103 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2104 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2105 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2106 cllc_decoder_select="bswapdsp"
2107 comfortnoise_encoder_select="lpc"
2108 cook_decoder_select="audiodsp mdct sinewin"
2109 cscd_decoder_select="lzo"
2110 cscd_decoder_suggest="zlib"
2111 dca_decoder_select="fmtconvert mdct"
2112 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2113 dnxhd_decoder_select="blockdsp idctdsp"
2114 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2115 dvvideo_decoder_select="dvprofile idctdsp"
2116 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2117 dxa_decoder_select="zlib"
2118 eac3_decoder_select="ac3_decoder"
2119 eac3_encoder_select="ac3_encoder"
2120 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2121 eatgq_decoder_select="aandcttables"
2122 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2123 exr_decoder_select="zlib"
2124 ffv1_decoder_select="golomb rangecoder"
2125 ffv1_encoder_select="rangecoder"
2126 ffvhuff_decoder_select="huffyuv_decoder"
2127 ffvhuff_encoder_select="huffyuv_encoder"
2128 fic_decoder_select="golomb"
2129 flac_decoder_select="golomb"
2130 flac_encoder_select="bswapdsp golomb lpc"
2131 flashsv_decoder_select="zlib"
2132 flashsv_encoder_select="zlib"
2133 flashsv2_encoder_select="zlib"
2134 flashsv2_decoder_select="zlib"
2135 flv_decoder_select="h263_decoder"
2136 flv_encoder_select="h263_encoder"
2137 fourxm_decoder_select="blockdsp bswapdsp"
2138 fraps_decoder_select="bswapdsp huffman"
2139 g2m_decoder_select="blockdsp idctdsp zlib"
2140 g729_decoder_select="audiodsp"
2141 h261_decoder_select="mpeg_er mpegvideo"
2142 h261_encoder_select="aandcttables mpegvideoenc"
2143 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2144 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2145 h263i_decoder_select="h263_decoder"
2146 h263p_encoder_select="h263_encoder"
2147 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2148 h264_decoder_suggest="error_resilience"
2149 h264_qsv_decoder_deps="libmfx"
2150 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2151 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2152 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2153 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2154 iac_decoder_select="imc_decoder"
2155 imc_decoder_select="bswapdsp fft mdct sinewin"
2156 indeo3_decoder_select="hpeldsp"
2157 interplay_video_decoder_select="hpeldsp"
2158 jpegls_decoder_select="golomb mjpeg_decoder"
2159 jpegls_encoder_select="golomb"
2160 jv_decoder_select="blockdsp"
2161 lagarith_decoder_select="huffyuvdsp"
2162 ljpeg_encoder_select="aandcttables idctdsp"
2163 loco_decoder_select="golomb"
2164 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2165 metasound_decoder_select="lsp mdct sinewin"
2166 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2167 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2168 mjpeg_encoder_select="aandcttables mpegvideoenc"
2169 mjpegb_decoder_select="mjpeg_decoder"
2170 mlp_decoder_select="mlp_parser"
2171 motionpixels_decoder_select="bswapdsp"
2172 mp1_decoder_select="mpegaudio"
2173 mp1float_decoder_select="mpegaudio"
2174 mp2_decoder_select="mpegaudio"
2175 mp2float_decoder_select="mpegaudio"
2176 mp3_decoder_select="mpegaudio"
2177 mp3adu_decoder_select="mpegaudio"
2178 mp3adufloat_decoder_select="mpegaudio"
2179 mp3float_decoder_select="mpegaudio"
2180 mp3on4_decoder_select="mpegaudio"
2181 mp3on4float_decoder_select="mpegaudio"
2182 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2183 mpc8_decoder_select="mpegaudiodsp"
2184 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2185 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2186 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2187 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2188 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2189 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2190 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2191 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2192 mpeg4_encoder_select="h263_encoder"
2193 msmpeg4v1_decoder_select="h263_decoder"
2194 msmpeg4v2_decoder_select="h263_decoder"
2195 msmpeg4v2_encoder_select="h263_encoder"
2196 msmpeg4v3_decoder_select="h263_decoder"
2197 msmpeg4v3_encoder_select="h263_encoder"
2198 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2199 mxpeg_decoder_select="mjpeg_decoder"
2200 nellymoser_decoder_select="mdct sinewin"
2201 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2202 nuv_decoder_select="idctdsp lzo"
2203 on2avc_decoder_select="mdct"
2204 opus_decoder_deps="swresample"
2205 opus_decoder_select="imdct15"
2206 png_decoder_select="zlib"
2207 png_encoder_select="huffyuvencdsp zlib"
2208 prores_decoder_select="blockdsp idctdsp"
2209 prores_encoder_select="fdctdsp"
2210 qcelp_decoder_select="lsp"
2211 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2212 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2213 ra_144_decoder_select="audiodsp"
2214 ralf_decoder_select="golomb"
2215 rawvideo_decoder_select="bswapdsp"
2216 rtjpeg_decoder_select="me_cmp"
2217 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2218 rv10_encoder_select="h263_encoder"
2219 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2220 rv20_encoder_select="h263_encoder"
2221 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2222 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2223 shorten_decoder_select="golomb"
2224 sipr_decoder_select="lsp"
2225 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2226 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2227 sonic_decoder_select="golomb rangecoder"
2228 sonic_encoder_select="golomb rangecoder"
2229 sonic_ls_encoder_select="golomb rangecoder"
2230 sp5x_decoder_select="mjpeg_decoder"
2231 svq1_decoder_select="hpeldsp"
2232 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2233 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2234 svq3_decoder_suggest="zlib"
2235 tak_decoder_select="audiodsp"
2236 tdsc_decoder_select="zlib mjpeg_decoder"
2237 theora_decoder_select="vp3_decoder"
2238 thp_decoder_select="mjpeg_decoder"
2239 tiff_decoder_suggest="zlib lzma"
2240 tiff_encoder_suggest="zlib"
2241 truehd_decoder_select="mlp_parser"
2242 truemotion2_decoder_select="bswapdsp"
2243 truespeech_decoder_select="bswapdsp"
2244 tscc_decoder_select="zlib"
2245 twinvq_decoder_select="mdct lsp sinewin"
2246 utvideo_decoder_select="bswapdsp"
2247 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2248 vble_decoder_select="huffyuvdsp"
2249 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2250 vc1image_decoder_select="vc1_decoder"
2251 vorbis_decoder_select="mdct"
2252 vorbis_encoder_select="mdct"
2253 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2254 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2255 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2256 vp6a_decoder_select="vp6_decoder"
2257 vp6f_decoder_select="vp6_decoder"
2258 vp7_decoder_select="h264pred videodsp"
2259 vp8_decoder_select="h264pred videodsp"
2260 vp9_decoder_select="videodsp vp9_parser"
2261 webp_decoder_select="vp8_decoder"
2262 wmalossless_decoder_select="llauddsp"
2263 wmapro_decoder_select="mdct sinewin wma_freqs"
2264 wmav1_decoder_select="mdct sinewin wma_freqs"
2265 wmav1_encoder_select="mdct sinewin wma_freqs"
2266 wmav2_decoder_select="mdct sinewin wma_freqs"
2267 wmav2_encoder_select="mdct sinewin wma_freqs"
2268 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2269 wmv1_decoder_select="h263_decoder"
2270 wmv1_encoder_select="h263_encoder"
2271 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2272 wmv2_encoder_select="h263_encoder"
2273 wmv3_decoder_select="vc1_decoder"
2274 wmv3image_decoder_select="wmv3_decoder"
2275 zerocodec_decoder_select="zlib"
2276 zlib_decoder_select="zlib"
2277 zlib_encoder_select="zlib"
2278 zmbv_decoder_select="zlib"
2279 zmbv_encoder_select="zlib"
2280
2281 # hardware accelerators
2282 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2283 dxva2_deps="dxva2api_h"
2284 vaapi_deps="va_va_h"
2285 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2286 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2287 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2288 xvmc_deps="X11_extensions_XvMClib_h"
2289
2290 h263_vaapi_hwaccel_deps="vaapi"
2291 h263_vaapi_hwaccel_select="h263_decoder"
2292 h263_vdpau_hwaccel_deps="vdpau"
2293 h263_vdpau_hwaccel_select="h263_decoder"
2294 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2295 h264_dxva2_hwaccel_deps="dxva2"
2296 h264_dxva2_hwaccel_select="h264_decoder"
2297 h264_qsv_hwaccel_deps="libmfx"
2298 h264_vaapi_hwaccel_deps="vaapi"
2299 h264_vaapi_hwaccel_select="h264_decoder"
2300 h264_vda_decoder_deps="vda"
2301 h264_vda_decoder_select="h264_decoder"
2302 h264_vda_hwaccel_deps="vda"
2303 h264_vda_hwaccel_select="h264_decoder"
2304 h264_vda_old_hwaccel_deps="vda"
2305 h264_vda_old_hwaccel_select="h264_decoder"
2306 h264_vdpau_decoder_deps="vdpau"
2307 h264_vdpau_decoder_select="h264_decoder"
2308 h264_vdpau_hwaccel_deps="vdpau"
2309 h264_vdpau_hwaccel_select="h264_decoder"
2310 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2311 hevc_dxva2_hwaccel_select="hevc_decoder"
2312 mpeg_vdpau_decoder_deps="vdpau"
2313 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2314 mpeg_xvmc_hwaccel_deps="xvmc"
2315 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2316 mpeg1_vdpau_decoder_deps="vdpau"
2317 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2318 mpeg1_vdpau_hwaccel_deps="vdpau"
2319 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2320 mpeg1_xvmc_hwaccel_deps="xvmc"
2321 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2322 mpeg2_crystalhd_decoder_select="crystalhd"
2323 mpeg2_dxva2_hwaccel_deps="dxva2"
2324 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2325 mpeg2_vaapi_hwaccel_deps="vaapi"
2326 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2327 mpeg2_vdpau_hwaccel_deps="vdpau"
2328 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2329 mpeg2_xvmc_hwaccel_deps="xvmc"
2330 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2331 mpeg4_crystalhd_decoder_select="crystalhd"
2332 mpeg4_vaapi_hwaccel_deps="vaapi"
2333 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2334 mpeg4_vdpau_decoder_deps="vdpau"
2335 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2336 mpeg4_vdpau_hwaccel_deps="vdpau"
2337 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2338 msmpeg4_crystalhd_decoder_select="crystalhd"
2339 vc1_crystalhd_decoder_select="crystalhd"
2340 vc1_dxva2_hwaccel_deps="dxva2"
2341 vc1_dxva2_hwaccel_select="vc1_decoder"
2342 vc1_vaapi_hwaccel_deps="vaapi"
2343 vc1_vaapi_hwaccel_select="vc1_decoder"
2344 vc1_vdpau_decoder_deps="vdpau"
2345 vc1_vdpau_decoder_select="vc1_decoder"
2346 vc1_vdpau_hwaccel_deps="vdpau"
2347 vc1_vdpau_hwaccel_select="vc1_decoder"
2348 wmv3_crystalhd_decoder_select="crystalhd"
2349 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2350 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2351 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2352 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2353
2354 # parsers
2355 h264_parser_select="h264_decoder"
2356 hevc_parser_select="hevc_decoder"
2357 mpegvideo_parser_select="mpegvideo"
2358 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2359 vc1_parser_select="mpegvideo startcode vc1_decoder"
2360
2361 # external libraries
2362 libaacplus_encoder_deps="libaacplus"
2363 libcelt_decoder_deps="libcelt"
2364 libdcadec_decoder_deps="libdcadec"
2365 libfaac_encoder_deps="libfaac"
2366 libfaac_encoder_select="audio_frame_queue"
2367 libfdk_aac_decoder_deps="libfdk_aac"
2368 libfdk_aac_encoder_deps="libfdk_aac"
2369 libfdk_aac_encoder_select="audio_frame_queue"
2370 libgme_demuxer_deps="libgme"
2371 libgsm_decoder_deps="libgsm"
2372 libgsm_encoder_deps="libgsm"
2373 libgsm_ms_decoder_deps="libgsm"
2374 libgsm_ms_encoder_deps="libgsm"
2375 libilbc_decoder_deps="libilbc"
2376 libilbc_encoder_deps="libilbc"
2377 libmodplug_demuxer_deps="libmodplug"
2378 libmp3lame_encoder_deps="libmp3lame"
2379 libmp3lame_encoder_select="audio_frame_queue"
2380 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2381 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2382 libopencore_amrnb_encoder_select="audio_frame_queue"
2383 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2384 libopenh264_encoder_deps="libopenh264"
2385 libopenjpeg_decoder_deps="libopenjpeg"
2386 libopenjpeg_encoder_deps="libopenjpeg"
2387 libopus_decoder_deps="libopus"
2388 libopus_encoder_deps="libopus"
2389 libopus_encoder_select="audio_frame_queue"
2390 libquvi_demuxer_deps="libquvi"
2391 libschroedinger_decoder_deps="libschroedinger"
2392 libschroedinger_encoder_deps="libschroedinger"
2393 libshine_encoder_deps="libshine"
2394 libshine_encoder_select="audio_frame_queue"
2395 libspeex_decoder_deps="libspeex"
2396 libspeex_encoder_deps="libspeex"
2397 libspeex_encoder_select="audio_frame_queue"
2398 libstagefright_h264_decoder_deps="libstagefright_h264"
2399 libtheora_encoder_deps="libtheora"
2400 libtwolame_encoder_deps="libtwolame"
2401 libvo_aacenc_encoder_deps="libvo_aacenc"
2402 libvo_aacenc_encoder_select="audio_frame_queue"
2403 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2404 libvorbis_decoder_deps="libvorbis"
2405 libvorbis_encoder_deps="libvorbis"
2406 libvorbis_encoder_select="audio_frame_queue"
2407 libvpx_vp8_decoder_deps="libvpx"
2408 libvpx_vp8_encoder_deps="libvpx"
2409 libvpx_vp9_decoder_deps="libvpx"
2410 libvpx_vp9_encoder_deps="libvpx"
2411 libwavpack_encoder_deps="libwavpack"
2412 libwebp_encoder_deps="libwebp"
2413 libx264_encoder_deps="libx264"
2414 libx264rgb_encoder_deps="libx264"
2415 libx264rgb_encoder_select="libx264_encoder"
2416 libx265_encoder_deps="libx265"
2417 libxavs_encoder_deps="libxavs"
2418 libxvid_encoder_deps="libxvid"
2419 libutvideo_decoder_deps="libutvideo"
2420 libutvideo_encoder_deps="libutvideo"
2421 libzvbi_teletext_decoder_deps="libzvbi"
2422 nvenc_encoder_deps="nvenc"
2423
2424 # demuxers / muxers
2425 ac3_demuxer_select="ac3_parser"
2426 asf_demuxer_select="riffdec"
2427 asf_muxer_select="riffenc"
2428 asf_stream_muxer_select="asf_muxer"
2429 avi_demuxer_select="riffdec exif"
2430 avi_muxer_select="riffenc"
2431 avisynth_demuxer_deps="avisynth"
2432 avisynth_demuxer_select="riffdec"
2433 caf_demuxer_select="riffdec"
2434 dash_muxer_select="mp4_muxer"
2435 dirac_demuxer_select="dirac_parser"
2436 dts_demuxer_select="dca_parser"
2437 dtshd_demuxer_select="dca_parser"
2438 dv_demuxer_select="dvprofile"
2439 dv_muxer_select="dvprofile"
2440 dxa_demuxer_select="riffdec"
2441 eac3_demuxer_select="ac3_parser"
2442 f4v_muxer_select="mov_muxer"
2443 flac_demuxer_select="flac_parser"
2444 hds_muxer_select="flv_muxer"
2445 hls_muxer_select="mpegts_muxer"
2446 image2_alias_pix_demuxer_select="image2_demuxer"
2447 image2_brender_pix_demuxer_select="image2_demuxer"
2448 ipod_muxer_select="mov_muxer"
2449 ismv_muxer_select="mov_muxer"
2450 libnut_demuxer_deps="libnut"
2451 libnut_muxer_deps="libnut"
2452 matroska_audio_muxer_select="matroska_muxer"
2453 matroska_demuxer_select="riffdec"
2454 matroska_demuxer_suggest="bzlib lzo zlib"
2455 matroska_muxer_select="riffenc"
2456 mmf_muxer_select="riffenc"
2457 mov_demuxer_select="riffdec"
2458 mov_demuxer_suggest="zlib"
2459 mov_muxer_select="riffenc rtpenc_chain"
2460 mp3_demuxer_select="mpegaudio_parser"
2461 mp4_muxer_select="mov_muxer"
2462 mpegts_muxer_select="adts_muxer latm_muxer"
2463 mpegtsraw_demuxer_select="mpegts_demuxer"
2464 mxf_d10_muxer_select="mxf_muxer"
2465 mxf_opatom_muxer_select="mxf_muxer"
2466 nut_muxer_select="riffenc"
2467 nuv_demuxer_select="riffdec"
2468 oga_muxer_select="ogg_muxer"
2469 ogg_demuxer_select="golomb"
2470 opus_muxer_select="ogg_muxer"
2471 psp_muxer_select="mov_muxer"
2472 rtp_demuxer_select="sdp_demuxer"
2473 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2474 rtsp_demuxer_select="http_protocol rtpdec"
2475 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2476 sap_demuxer_select="sdp_demuxer"
2477 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2478 sdp_demuxer_select="rtpdec"
2479 smoothstreaming_muxer_select="ismv_muxer"
2480 spdif_muxer_select="aac_parser"
2481 spx_muxer_select="ogg_muxer"
2482 tak_demuxer_select="tak_parser"
2483 tg2_muxer_select="mov_muxer"
2484 tgp_muxer_select="mov_muxer"
2485 vobsub_demuxer_select="mpegps_demuxer"
2486 w64_demuxer_select="wav_demuxer"
2487 w64_muxer_select="wav_muxer"
2488 wav_demuxer_select="riffdec"
2489 wav_muxer_select="riffenc"
2490 webm_muxer_select="riffenc"
2491 wtv_demuxer_select="riffdec"
2492 wtv_muxer_select="riffenc"
2493 xmv_demuxer_select="riffdec"
2494 xwma_demuxer_select="riffdec"
2495
2496 # indevs / outdevs
2497 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2498 alsa_outdev_deps="alsa_asoundlib_h"
2499 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2500 avfoundation_indev_select="avfoundation"
2501 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2502 caca_outdev_deps="libcaca"
2503 decklink_outdev_deps="decklink pthreads"
2504 decklink_outdev_extralibs="-lstdc++"
2505 decklink_indev_deps="decklink pthreads"
2506 decklink_indev_extralibs="-lstdc++"
2507 dshow_indev_deps="IBaseFilter"
2508 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2509 dv1394_indev_deps="dv1394"
2510 dv1394_indev_select="dv_demuxer"
2511 fbdev_indev_deps="linux_fb_h"
2512 fbdev_outdev_deps="linux_fb_h"
2513 gdigrab_indev_deps="CreateDIBSection"
2514 gdigrab_indev_extralibs="-lgdi32"
2515 gdigrab_indev_select="bmp_decoder"
2516 iec61883_indev_deps="libiec61883"
2517 jack_indev_deps="jack_jack_h sem_timedwait"
2518 lavfi_indev_deps="avfilter"
2519 libcdio_indev_deps="libcdio"
2520 libdc1394_indev_deps="libdc1394"
2521 libv4l2_indev_deps="libv4l2"
2522 openal_indev_deps="openal"
2523 opengl_outdev_deps="opengl"
2524 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2525 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2526 pulse_indev_deps="libpulse"
2527 pulse_outdev_deps="libpulse"
2528 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2529 qtkit_indev_select="qtkit"
2530 sdl_outdev_deps="sdl"
2531 sndio_indev_deps="sndio_h"
2532 sndio_outdev_deps="sndio_h"
2533 v4l_indev_deps="linux_videodev_h"
2534 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2535 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2536 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2537 vfwcap_indev_extralibs="-lavicap32"
2538 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2539 xv_outdev_extralibs="-lXv -lX11 -lXext"
2540 x11grab_indev_deps="x11grab"
2541 x11grab_xcb_indev_deps="libxcb"
2542
2543 # protocols
2544 bluray_protocol_deps="libbluray"
2545 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2546 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2547 ffrtmpcrypt_protocol_select="tcp_protocol"
2548 ffrtmphttp_protocol_deps="!librtmp_protocol"
2549 ffrtmphttp_protocol_select="http_protocol"
2550 ftp_protocol_select="tcp_protocol"
2551 gopher_protocol_select="network"
2552 http_protocol_select="tcp_protocol"
2553 httpproxy_protocol_select="tcp_protocol"
2554 https_protocol_select="tls_protocol"
2555 icecast_protocol_select="http_protocol"
2556 librtmp_protocol_deps="librtmp"
2557 librtmpe_protocol_deps="librtmp"
2558 librtmps_protocol_deps="librtmp"
2559 librtmpt_protocol_deps="librtmp"
2560 librtmpte_protocol_deps="librtmp"
2561 libsmbclient_protocol_deps="libsmbclient gplv3"
2562 libssh_protocol_deps="libssh"
2563 mmsh_protocol_select="http_protocol"
2564 mmst_protocol_select="network"
2565 rtmp_protocol_deps="!librtmp_protocol"
2566 rtmp_protocol_select="tcp_protocol"
2567 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2568 rtmps_protocol_deps="!librtmp_protocol"
2569 rtmps_protocol_select="tls_protocol"
2570 rtmpt_protocol_select="ffrtmphttp_protocol"
2571 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2572 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2573 rtp_protocol_select="udp_protocol"
2574 sctp_protocol_deps="struct_sctp_event_subscribe"
2575 sctp_protocol_select="network"
2576 srtp_protocol_select="rtp_protocol"
2577 tcp_protocol_select="network"
2578 tls_protocol_deps_any="openssl gnutls"
2579 tls_protocol_select="tcp_protocol"
2580 udp_protocol_select="network"
2581 udplite_protocol_select="network"
2582 unix_protocol_deps="sys_un_h"
2583 unix_protocol_select="network"
2584
2585 # filters
2586 amovie_filter_deps="avcodec avformat"
2587 aresample_filter_deps="swresample"
2588 ass_filter_deps="libass"
2589 asyncts_filter_deps="avresample"
2590 atempo_filter_deps="avcodec"
2591 atempo_filter_select="rdft"
2592 azmq_filter_deps="libzmq"
2593 blackframe_filter_deps="gpl"
2594 boxblur_filter_deps="gpl"
2595 bs2b_filter_deps="libbs2b"
2596 colormatrix_filter_deps="gpl"
2597 cropdetect_filter_deps="gpl"
2598 delogo_filter_deps="gpl"
2599 deshake_filter_select="pixelutils"
2600 drawtext_filter_deps="libfreetype"
2601 ebur128_filter_deps="gpl"
2602 eq_filter_deps="gpl"
2603 fftfilt_filter_deps="avcodec"
2604 fftfilt_filter_select="rdft"
2605 flite_filter_deps="libflite"
2606 frei0r_filter_deps="frei0r dlopen"
2607 frei0r_src_filter_deps="frei0r dlopen"
2608 fspp_filter_deps="gpl"
2609 geq_filter_deps="gpl"
2610 histeq_filter_deps="gpl"
2611 hqdn3d_filter_deps="gpl"
2612 interlace_filter_deps="gpl"
2613 kerndeint_filter_deps="gpl"
2614 ladspa_filter_deps="ladspa dlopen"
2615 mcdeint_filter_deps="avcodec gpl"
2616 movie_filter_deps="avcodec avformat"
2617 mpdecimate_filter_deps="gpl"
2618 mpdecimate_filter_select="pixelutils"
2619 mptestsrc_filter_deps="gpl"
2620 negate_filter_deps="lut_filter"
2621 perspective_filter_deps="gpl"
2622 pp7_filter_deps="gpl"
2623 ocv_filter_deps="libopencv"
2624 owdenoise_filter_deps="gpl"
2625 pan_filter_deps="swresample"
2626 phase_filter_deps="gpl"
2627 pp_filter_deps="gpl postproc"
2628 pullup_filter_deps="gpl"
2629 removelogo_filter_deps="avcodec avformat swscale"
2630 repeatfields_filter_deps="gpl"
2631 resample_filter_deps="avresample"
2632 sab_filter_deps="gpl swscale"
2633 scale_filter_deps="swscale"
2634 select_filter_select="pixelutils"
2635 smartblur_filter_deps="gpl swscale"
2636 showspectrum_filter_deps="avcodec"
2637 showspectrum_filter_select="rdft"
2638 spp_filter_deps="gpl avcodec"
2639 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2640 stereo3d_filter_deps="gpl"
2641 subtitles_filter_deps="avformat avcodec libass"
2642 super2xsai_filter_deps="gpl"
2643 tinterlace_filter_deps="gpl"
2644 vidstabdetect_filter_deps="libvidstab"
2645 vidstabtransform_filter_deps="libvidstab"
2646 pixfmts_super2xsai_test_deps="super2xsai_filter"
2647 tinterlace_merge_test_deps="tinterlace_filter"
2648 tinterlace_pad_test_deps="tinterlace_filter"
2649 uspp_filter_deps="gpl avcodec"
2650 zmq_filter_deps="libzmq"
2651 zoompan_filter_deps="swscale"
2652
2653 # examples
2654 avio_reading="avformat avcodec avutil"
2655 avcodec_example_deps="avcodec avutil"
2656 decoding_encoding_example_deps="avcodec avformat avutil"
2657 demuxing_decoding_example_deps="avcodec avformat avutil"
2658 extract_mvs_example_deps="avcodec avformat avutil"
2659 filter_audio_example_deps="avfilter avutil"
2660 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2661 filtering_video_example_deps="avfilter avcodec avformat avutil"
2662 metadata_example_deps="avformat avutil"
2663 muxing_example_deps="avcodec avformat avutil swscale"
2664 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2665 remuxing_example_deps="avcodec avformat avutil"
2666 resampling_audio_example_deps="avutil swresample"
2667 scaling_video_example_deps="avutil swscale"
2668 transcode_aac_example_deps="avcodec avformat swresample"
2669 transcoding_example_deps="avfilter avcodec avformat avutil"
2670
2671 # libraries, in linking order
2672 avcodec_deps="avutil"
2673 avdevice_deps="avformat avcodec avutil"
2674 avfilter_deps="avutil"
2675 avformat_deps="avcodec avutil"
2676 avresample_deps="avutil"
2677 postproc_deps="avutil gpl"
2678 swresample_deps="avutil"
2679 swscale_deps="avutil"
2680
2681 # programs
2682 ffmpeg_deps="avcodec avfilter avformat swresample"
2683 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2684                null_filter
2685                setpts_filter trim_filter"
2686 ffplay_deps="avcodec avformat swscale swresample sdl"
2687 ffplay_libs='$sdl_libs'
2688 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2689 ffprobe_deps="avcodec avformat"
2690 ffserver_deps="avformat fork sarestart"
2691 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2692
2693 # documentation
2694 podpages_deps="perl"
2695 manpages_deps="perl pod2man"
2696 htmlpages_deps="perl"
2697 htmlpages_deps_any="makeinfo_html texi2html"
2698 txtpages_deps="perl makeinfo"
2699 doc_deps_any="manpages htmlpages podpages txtpages"
2700
2701 # default parameters
2702
2703 logfile="config.log"
2704
2705 # installation paths
2706 prefix_default="/usr/local"
2707 bindir_default='${prefix}/bin'
2708 datadir_default='${prefix}/share/ffmpeg'
2709 docdir_default='${prefix}/share/doc/ffmpeg'
2710 incdir_default='${prefix}/include'
2711 libdir_default='${prefix}/lib'
2712 mandir_default='${prefix}/share/man'
2713
2714 # toolchain
2715 ar_default="ar"
2716 cc_default="gcc"
2717 cxx_default="g++"
2718 host_cc_default="gcc"
2719 cp_f="cp -f"
2720 doxygen_default="doxygen"
2721 install="install"
2722 ln_s="ln -s -f"
2723 nm_default="nm -g"
2724 objformat="elf"
2725 pkg_config_default=pkg-config
2726 if ranlib 2>&1 | grep -q "\-D "; then
2727     ranlib_default="ranlib -D"
2728 else
2729     ranlib_default="ranlib"
2730 fi
2731 strip_default="strip"
2732 yasmexe_default="yasm"
2733 windres_default="windres"
2734
2735 # OS
2736 target_os_default=$(tolower $(uname -s))
2737 host_os=$target_os_default
2738
2739 # machine
2740 if test "$target_os_default" = aix; then
2741     arch_default=$(uname -p)
2742     strip_default="strip -X32_64"
2743 else
2744     arch_default=$(uname -m)
2745 fi
2746 cpu="generic"
2747 intrinsics="none"
2748
2749 # configurable options
2750 enable $PROGRAM_LIST
2751 enable $DOCUMENT_LIST
2752 enable $EXAMPLE_LIST
2753 enable $(filter_out avresample $LIBRARY_LIST)
2754 enable stripping
2755
2756 enable asm
2757 enable debug
2758 enable doc
2759 enable faan faandct faanidct
2760 enable optimizations
2761 enable runtime_cpudetect
2762 enable safe_bitstream_reader
2763 enable static
2764 enable swscale_alpha
2765
2766 sws_max_filter_size_default=256
2767 set_default sws_max_filter_size
2768
2769 # Enable hwaccels by default.
2770 enable dxva2 vaapi vda vdpau xvmc
2771 enable xlib
2772
2773 # build settings
2774 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2775 LIBPREF="lib"
2776 LIBSUF=".a"
2777 FULLNAME='$(NAME)$(BUILDSUF)'
2778 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2779 SLIBPREF="lib"
2780 SLIBSUF=".so"
2781 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2782 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2783 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2784 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2785 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2786 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2787
2788 asflags_filter=echo
2789 cflags_filter=echo
2790 ldflags_filter=echo
2791
2792 AS_C='-c'
2793 AS_O='-o $@'
2794 CC_C='-c'
2795 CC_E='-E -o $@'
2796 CC_O='-o $@'
2797 CXX_C='-c'
2798 CXX_O='-o $@'
2799 LD_O='-o $@'
2800 LD_LIB='-l%'
2801 LD_PATH='-L'
2802 HOSTCC_C='-c'
2803 HOSTCC_E='-E -o $@'
2804 HOSTCC_O='-o $@'
2805 HOSTLD_O='-o $@'
2806
2807 host_libs='-lm'
2808 host_cflags_filter=echo
2809 host_ldflags_filter=echo
2810
2811 target_path='$(CURDIR)'
2812
2813 # since the object filename is not given with the -MM flag, the compiler
2814 # is only able to print the basename, and we must add the path ourselves
2815 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2816 DEPFLAGS='-MM'
2817
2818 # find source path
2819 if test -f configure; then
2820     source_path=.
2821 else
2822     source_path=$(cd $(dirname "$0"); pwd)
2823     echo "$source_path" | grep -q '[[:blank:]]' &&
2824         die "Out of tree builds are impossible with whitespace in source path."
2825     test -e "$source_path/config.h" &&
2826         die "Out of tree builds are impossible with config.h in source dir."
2827 fi
2828
2829 for v in "$@"; do
2830     r=${v#*=}
2831     l=${v%"$r"}
2832     r=$(sh_quote "$r")
2833     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2834 done
2835
2836 find_things(){
2837     thing=$1
2838     pattern=$2
2839     file=$source_path/$3
2840     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2841 }
2842
2843 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2844 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2845 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2846 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2847 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2848 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2849 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2850 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2851 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2852 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2853 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2854
2855 ALL_COMPONENTS="
2856     $BSF_LIST
2857     $DECODER_LIST
2858     $DEMUXER_LIST
2859     $ENCODER_LIST
2860     $FILTER_LIST
2861     $HWACCEL_LIST
2862     $INDEV_LIST
2863     $MUXER_LIST
2864     $OUTDEV_LIST
2865     $PARSER_LIST
2866     $PROTOCOL_LIST
2867 "
2868
2869 for n in $COMPONENT_LIST; do
2870     v=$(toupper ${n%s})_LIST
2871     eval enable \$$v
2872     eval ${n}_if_any="\$$v"
2873 done
2874
2875 enable $ARCH_EXT_LIST
2876
2877 die_unknown(){
2878     echo "Unknown option \"$1\"."
2879     echo "See $0 --help for available options."
2880     exit 1
2881 }
2882
2883 print_3_columns() {
2884     cat | tr ' ' '\n' | sort | pr -r -3 -t
2885 }
2886
2887 show_list() {
2888     suffix=_$1
2889     shift
2890     echo $* | sed s/$suffix//g | print_3_columns
2891     exit 0
2892 }
2893
2894 rand_list(){
2895     IFS=', '
2896     set -- $*
2897     unset IFS
2898     for thing; do
2899         comp=${thing%:*}
2900         prob=${thing#$comp}
2901         prob=${prob#:}
2902         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2903         echo "prob ${prob:-0.5}"
2904         printf '%s\n' $comp
2905     done
2906 }
2907
2908 do_random(){
2909     action=$1
2910     shift
2911     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2912     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2913 }
2914
2915 for opt do
2916     optval="${opt#*=}"
2917     case "$opt" in
2918         --extra-ldflags=*)
2919             add_ldflags $optval
2920         ;;
2921         --extra-ldexeflags=*)
2922             add_ldexeflags $optval
2923         ;;
2924         --extra-libs=*)
2925             add_extralibs $optval
2926         ;;
2927         --disable-devices)
2928             disable $INDEV_LIST $OUTDEV_LIST
2929         ;;
2930         --enable-debug=*)
2931             debuglevel="$optval"
2932         ;;
2933         --disable-programs)
2934             disable $PROGRAM_LIST
2935         ;;
2936         --disable-everything)
2937             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2938         ;;
2939         --disable-all)
2940             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2941             disable $LIBRARY_LIST $PROGRAM_LIST doc
2942         ;;
2943         --enable-random|--disable-random)
2944             action=${opt%%-random}
2945             do_random ${action#--} $COMPONENT_LIST
2946         ;;
2947         --enable-random=*|--disable-random=*)
2948             action=${opt%%-random=*}
2949             do_random ${action#--} $optval
2950         ;;
2951         --enable-*=*|--disable-*=*)
2952             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2953             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2954             eval list=\$$(toupper $thing)_LIST
2955             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2956             list=$(filter "$name" $list)
2957             [ "$list" = "" ] && warn "Option $opt did not match anything"
2958             $action $list
2959         ;;
2960         --enable-?*|--disable-?*)
2961             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2962             if is_in $option $COMPONENT_LIST; then
2963                 test $action = disable && action=unset
2964                 eval $action \$$(toupper ${option%s})_LIST
2965             elif is_in $option $CMDLINE_SELECT; then
2966                 $action $option
2967             else
2968                 die_unknown $opt
2969             fi
2970         ;;
2971         --list-*)
2972             NAME="${opt#--list-}"
2973             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2974             NAME=${NAME%s}
2975             eval show_list $NAME \$$(toupper $NAME)_LIST
2976         ;;
2977         --help|-h) show_help
2978         ;;
2979         --fatal-warnings) enable fatal_warnings
2980         ;;
2981         *)
2982             optname="${opt%%=*}"
2983             optname="${optname#--}"
2984             optname=$(echo "$optname" | sed 's/-/_/g')
2985             if is_in $optname $CMDLINE_SET; then
2986                 eval $optname='$optval'
2987             elif is_in $optname $CMDLINE_APPEND; then
2988                 append $optname "$optval"
2989             else
2990                 die_unknown $opt
2991             fi
2992         ;;
2993     esac
2994 done
2995
2996 disabled logging && logfile=/dev/null
2997
2998 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2999 set >> $logfile
3000
3001 test -n "$valgrind" && toolchain="valgrind-memcheck"
3002
3003 case "$toolchain" in
3004     clang-asan)
3005         cc_default="clang"
3006         add_cflags  -fsanitize=address
3007         add_ldflags -fsanitize=address
3008     ;;
3009     clang-tsan)
3010         cc_default="clang"
3011         add_cflags  -fsanitize=thread -pie
3012         add_ldflags -fsanitize=thread -pie
3013     ;;
3014     clang-usan)
3015         cc_default="clang"
3016         add_cflags  -fsanitize=undefined
3017         add_ldflags -fsanitize=undefined
3018     ;;
3019     gcc-asan)
3020         cc_default="gcc"
3021         add_cflags  -fsanitize=address
3022         add_ldflags -fsanitize=address
3023     ;;
3024     gcc-tsan)
3025         cc_default="gcc"
3026         add_cflags  -fsanitize=thread -pie -fPIC
3027         add_ldflags -fsanitize=thread -pie -fPIC
3028     ;;
3029     gcc-usan)
3030         cc_default="gcc"
3031         add_cflags  -fsanitize=undefined
3032         add_ldflags -fsanitize=undefined
3033     ;;
3034     valgrind-massif)
3035         target_exec_default=${valgrind:-"valgrind"}
3036         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"
3037     ;;
3038     valgrind-memcheck)
3039         target_exec_default=${valgrind:-"valgrind"}
3040         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3041     ;;
3042     msvc)
3043         # Check whether the current MSVC version needs the C99 converter.
3044         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3045         # support enough of C99 to build ffmpeg. Default to the new
3046         # behaviour if the regexp was unable to match anything, since this
3047         # successfully parses the version number of existing supported
3048         # versions that require the converter (MSVC 2010 and 2012).
3049         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3050         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3051             cc_default="cl"
3052         else
3053             cc_default="c99wrap cl"
3054         fi
3055         ld_default="link"
3056         nm_default="dumpbin -symbols"
3057         ar_default="lib"
3058         target_os_default="win32"
3059         # Use a relative path for TMPDIR. This makes sure all the
3060         # ffconf temp files are written with a relative path, avoiding
3061         # issues with msys/win32 path conversion for MSVC parameters
3062         # such as -Fo<file> or -out:<file>.
3063         TMPDIR=.
3064     ;;
3065     icl)
3066         cc_default="icl"
3067         ld_default="xilink"
3068         nm_default="dumpbin -symbols"
3069         ar_default="xilib"
3070         target_os_default="win32"
3071         TMPDIR=.
3072     ;;
3073     gcov)
3074         add_cflags  -fprofile-arcs -ftest-coverage
3075         add_ldflags -fprofile-arcs -ftest-coverage
3076     ;;
3077     hardened)
3078         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3079         add_cflags   -fno-strict-overflow -fstack-protector-all
3080         add_ldflags  -Wl,-z,relro -Wl,-z,now
3081     ;;
3082     ?*)
3083         die "Unknown toolchain $toolchain"
3084     ;;
3085 esac
3086
3087 test -n "$cross_prefix" && enable cross_compile
3088
3089 if enabled cross_compile; then
3090     test -n "$arch" && test -n "$target_os" ||
3091         die "Must specify target arch and OS when cross-compiling"
3092 fi
3093
3094 ar_default="${cross_prefix}${ar_default}"
3095 cc_default="${cross_prefix}${cc_default}"
3096 cxx_default="${cross_prefix}${cxx_default}"
3097 nm_default="${cross_prefix}${nm_default}"
3098 pkg_config_default="${cross_prefix}${pkg_config_default}"
3099 ranlib_default="${cross_prefix}${ranlib_default}"
3100 strip_default="${cross_prefix}${strip_default}"
3101 windres_default="${cross_prefix}${windres_default}"
3102
3103 sysinclude_default="${sysroot}/usr/include"
3104
3105 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3106     target_exec target_os yasmexe
3107 enabled cross_compile || host_cc_default=$cc
3108 set_default host_cc
3109
3110 pkg_config_fail_message=""
3111 if ! $pkg_config --version >/dev/null 2>&1; then
3112     warn "$pkg_config not found, library detection may fail."
3113     pkg_config=false
3114 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3115     pkg_config_fail_message="
3116 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3117 fi
3118
3119 if test $doxygen != $doxygen_default && \
3120   ! $doxygen --version >/dev/null 2>&1; then
3121     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3122 fi
3123
3124 exesuf() {
3125     case $1 in
3126         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3127     esac
3128 }
3129
3130 EXESUF=$(exesuf $target_os)
3131 HOSTEXESUF=$(exesuf $host_os)
3132
3133 # set temporary file name
3134 : ${TMPDIR:=$TEMPDIR}
3135 : ${TMPDIR:=$TMP}
3136 : ${TMPDIR:=/tmp}
3137
3138 if [ -n "$tempprefix" ] ; then
3139     mktemp(){
3140         echo $tempprefix.${HOSTNAME}.${UID}
3141     }
3142 elif ! check_cmd mktemp -u XXXXXX; then
3143     # simple replacement for missing mktemp
3144     # NOT SAFE FOR GENERAL USE
3145     mktemp(){
3146         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3147     }
3148 fi
3149
3150 tmpfile(){
3151     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3152         (set -C; exec > $tmp) 2>/dev/null ||
3153         die "Unable to create temporary file in $TMPDIR."
3154     append TMPFILES $tmp
3155     eval $1=$tmp
3156 }
3157
3158 trap 'rm -f -- $TMPFILES' EXIT
3159
3160 tmpfile TMPASM .asm
3161 tmpfile TMPC   .c
3162 tmpfile TMPCPP .cpp
3163 tmpfile TMPE   $EXESUF
3164 tmpfile TMPH   .h
3165 tmpfile TMPM   .m
3166 tmpfile TMPO   .o
3167 tmpfile TMPS   .S
3168 tmpfile TMPSH  .sh
3169 tmpfile TMPV   .ver
3170
3171 unset -f mktemp
3172
3173 chmod +x $TMPE
3174
3175 # make sure we can execute files in $TMPDIR
3176 cat > $TMPSH 2>> $logfile <<EOF
3177 #! /bin/sh
3178 EOF
3179 chmod +x $TMPSH >> $logfile 2>&1
3180 if ! $TMPSH >> $logfile 2>&1; then
3181     cat <<EOF
3182 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3183 variable to another directory and make sure that it is not mounted noexec.
3184 EOF
3185     die "Sanity test failed."
3186 fi
3187
3188 armasm_flags(){
3189     for flag; do
3190         case $flag in
3191             # Filter out MSVC cl.exe options from cflags that shouldn't
3192             # be passed to gas-preprocessor
3193             -M[TD]*)                                            ;;
3194             *)                  echo $flag                      ;;
3195         esac
3196    done
3197 }
3198
3199 ccc_flags(){
3200     for flag; do
3201         case $flag in
3202             -std=c99)           echo -c99                       ;;
3203             -mcpu=*)            echo -arch ${flag#*=}           ;;
3204             -mieee)             echo -ieee                      ;;
3205             -O*|-fast)          echo $flag                      ;;
3206             -fno-math-errno)    echo -assume nomath_errno       ;;
3207             -g)                 echo -g3                        ;;
3208             -Wall)              echo -msg_enable level2         ;;
3209             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3210             -Wl,*)              echo $flag                      ;;
3211             -f*|-W*)                                            ;;
3212             *)                  echo $flag                      ;;
3213         esac
3214    done
3215 }
3216
3217 cparser_flags(){
3218     for flag; do
3219         case $flag in
3220             -Wno-switch)             echo -Wno-switch-enum ;;
3221             -Wno-format-zero-length) ;;
3222             -Wdisabled-optimization) ;;
3223             -Wno-pointer-sign)       echo -Wno-other ;;
3224             *)                       echo $flag ;;
3225         esac
3226     done
3227 }
3228
3229 msvc_common_flags(){
3230     for flag; do
3231         case $flag in
3232             # In addition to specifying certain flags under the compiler
3233             # specific filters, they must be specified here as well or else the
3234             # generic catch all at the bottom will print the original flag.
3235             -Wall)                ;;
3236             -std=c99)             ;;
3237             # Common flags
3238             -fomit-frame-pointer) ;;
3239             -g)                   echo -Z7 ;;
3240             -fno-math-errno)      ;;
3241             -fno-common)          ;;
3242             -fno-signed-zeros)    ;;
3243             -fPIC)                ;;
3244             -mthumb)              ;;
3245             -march=*)             ;;
3246             -lz)                  echo zlib.lib ;;
3247             -lavifil32)           echo vfw32.lib ;;
3248             -lavicap32)           echo vfw32.lib user32.lib ;;
3249             -l*)                  echo ${flag#-l}.lib ;;
3250             -L*)                  echo -libpath:${flag#-L} ;;
3251             *)                    echo $flag ;;
3252         esac
3253     done
3254 }
3255
3256 msvc_flags(){
3257     msvc_common_flags "$@"
3258     for flag; do
3259         case $flag in
3260             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3261                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3262                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3263                                        -wd4307 \
3264                                        -wd4273 -wd4554 -wd4701 ;;
3265         esac
3266     done
3267 }
3268
3269 icl_flags(){
3270     msvc_common_flags "$@"
3271     for flag; do
3272         case $flag in
3273             # Despite what Intel's documentation says -Wall, which is supported
3274             # on Windows, does enable remarks so disable them here.
3275             -Wall)                echo $flag -Qdiag-disable:remark ;;
3276             -std=c99)             echo -Qstd=c99 ;;
3277             -flto)                echo -ipo ;;
3278         esac
3279     done
3280 }
3281
3282 icc_flags(){
3283     for flag; do
3284         case $flag in
3285             -flto)                echo -ipo ;;
3286             *)                    echo $flag ;;
3287         esac
3288     done
3289 }
3290
3291 pgi_flags(){
3292     for flag; do
3293         case $flag in
3294             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3295             -fomit-frame-pointer) echo -Mnoframe ;;
3296             -g)                   echo -gopt ;;
3297             *)                    echo $flag ;;
3298         esac
3299     done
3300 }
3301
3302 suncc_flags(){
3303     for flag; do
3304         case $flag in
3305             -march=*|-mcpu=*)
3306                 case "${flag#*=}" in
3307                     native)                   echo -xtarget=native       ;;
3308                     v9|niagara)               echo -xarch=sparc          ;;
3309                     ultrasparc)               echo -xarch=sparcvis       ;;
3310                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3311                     i586|pentium)             echo -xchip=pentium        ;;
3312                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3313                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3314                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3315                     pentium4*)          echo -xtarget=pentium4           ;;
3316                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3317                     *-sse3)             echo -xarch=sse3                 ;;
3318                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3319                     bonnell)                   echo -xarch=ssse3         ;;
3320                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3321                     westmere)                  echo -xtarget=westmere    ;;
3322                     silvermont)                echo -xarch=sse4_2        ;;
3323                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3324                     core-avx*|ivybridge|haswell|broadwell)
3325                                                echo -xarch=avx           ;;
3326                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3327                     btver1)                    echo -xarch=amdsse4a      ;;
3328                     btver2|bdver*)             echo -xarch=avx           ;;
3329                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3330                     k8|opteron|athlon64|athlon-fx)
3331                                                echo -xarch=sse2a         ;;
3332                     athlon*)                   echo -xarch=pentium_proa  ;;
3333                 esac
3334                 ;;
3335             -std=c99)             echo -xc99              ;;
3336             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3337             -fPIC)                echo -KPIC -xcode=pic32 ;;
3338             -W*,*)                echo $flag              ;;
3339             -f*-*|-W*|-mimpure-text)                      ;;
3340             -shared)              echo -G                 ;;
3341             *)                    echo $flag              ;;
3342         esac
3343     done
3344 }
3345
3346 tms470_flags(){
3347     for flag; do
3348         case $flag in
3349             -march=*|-mcpu=*)
3350                 case "${flag#*=}" in
3351                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3352                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3353                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3354                     armv6*|arm11*)          echo -mv=6   ;;
3355                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3356                                             echo -mv=5e  ;;
3357                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3358                 esac
3359                 ;;
3360             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3361             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3362             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3363             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3364             -msoft-float)   echo --float_support=vfplib       ;;
3365             -O[0-3]|-mf=*)  echo $flag                        ;;
3366             -g)             echo -g -mn                       ;;
3367             -pds=*)         echo $flag                        ;;
3368             -D*|-I*)        echo $flag                        ;;
3369             --gcc|--abi=*)  echo $flag                        ;;
3370             -me)            echo $flag                        ;;
3371         esac
3372     done
3373 }
3374
3375 probe_cc(){
3376     pfx=$1
3377     _cc=$2
3378
3379     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3380     unset _ld_o _ldflags _ld_lib _ld_path
3381     unset _depflags _DEPCMD _DEPFLAGS
3382     _flags_filter=echo
3383
3384     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3385         true # no-op to avoid reading stdin in following checks
3386     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3387         _type=llvm_gcc
3388         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3389         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3390         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3391         _cflags_speed='-O3'
3392         _cflags_size='-Os'
3393     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3394         _type=gcc
3395         gcc_version=$($_cc --version | head -n1)
3396         gcc_basever=$($_cc -dumpversion)
3397         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3398         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3399         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3400         if ! $_cc -dumpversion | grep -q '^2\.'; then
3401             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3402         fi
3403         _cflags_speed='-O3'
3404         _cflags_size='-Os'
3405     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3406         _type=icc
3407         _ident=$($_cc --version | head -n1)
3408         _depflags='-MMD'
3409         _cflags_speed='-O3'
3410         _cflags_size='-Os'
3411         _cflags_noopt='-O1'
3412         _flags_filter=icc_flags
3413     elif $_cc -v 2>&1 | grep -q xlc; then
3414         _type=xlc
3415         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3416         _cflags_speed='-O5'
3417         _cflags_size='-O5 -qcompact'
3418     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3419         _type=ccc
3420         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3421         _DEPFLAGS='-M'
3422         _cflags_speed='-fast'
3423         _cflags_size='-O1'
3424         _flags_filter=ccc_flags
3425     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3426         test -d "$sysroot" || die "No valid sysroot specified."
3427         _type=armcc
3428         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3429         armcc_conf="$PWD/armcc.conf"
3430         $_cc --arm_linux_configure                 \
3431              --arm_linux_config_file="$armcc_conf" \
3432              --configure_sysroot="$sysroot"        \
3433              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3434              die "Error creating armcc configuration file."
3435         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3436         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3437         as_default="${cross_prefix}gcc"
3438         _depflags='-MMD'
3439         _cflags_speed='-O3'
3440         _cflags_size='-Os'
3441     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3442         _type=tms470
3443         _ident=$($_cc -version | head -n1 | tr -s ' ')
3444         _flags='--gcc --abi=eabi -me'
3445         _cc_e='-ppl -fe=$@'
3446         _cc_o='-fe=$@'
3447         _depflags='-ppa -ppd=$(@:.o=.d)'
3448         _cflags_speed='-O3 -mf=5'
3449         _cflags_size='-O3 -mf=2'
3450         _flags_filter=tms470_flags
3451     elif $_cc -v 2>&1 | grep -q clang; then
3452         _type=clang
3453         _ident=$($_cc --version | head -n1)
3454         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3455         _cflags_speed='-O3'
3456         _cflags_size='-Os'
3457     elif $_cc -V 2>&1 | grep -q Sun; then
3458         _type=suncc
3459         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3460         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3461         _DEPFLAGS='-xM1 -xc99'
3462         _ldflags='-std=c99'
3463         _cflags_speed='-O5'
3464         _cflags_size='-O5 -xspace'
3465         _flags_filter=suncc_flags
3466     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3467         _type=pathscale
3468         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3469         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3470         _cflags_speed='-O2'
3471         _cflags_size='-Os'
3472         _flags_filter='filter_out -Wdisabled-optimization'
3473     elif $_cc -v 2>&1 | grep -q Open64; then
3474         _type=open64
3475         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3476         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3477         _cflags_speed='-O2'
3478         _cflags_size='-Os'
3479         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3480     elif $_cc -V 2>&1 | grep -q Portland; then
3481         _type=pgi
3482         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3483         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3484         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3485         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3486         _cflags_noopt="-O"
3487         _flags_filter=pgi_flags
3488     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3489         _type=armasm
3490         _ident=$($_cc | head -n1)
3491         # 4509: "This form of conditional instruction is deprecated"
3492         _flags="-nologo -ignore 4509"
3493         _flags_filter=armasm_flags
3494     elif $_cc 2>&1 | grep -q Intel; then
3495         _type=icl
3496         _ident=$($cc 2>&1 | head -n1)
3497         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3498         # Not only is O3 broken on 13.x+ but it is slower on all previous
3499         # versions (tested) as well.
3500         _cflags_speed="-O2"
3501         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3502         if $_cc 2>&1 | grep -q Linker; then
3503             _ld_o='-out:$@'
3504         else
3505             _ld_o='-Fe$@'
3506         fi
3507         _cc_o='-Fo$@'
3508         _cc_e='-P'
3509         _flags_filter=icl_flags
3510         _ld_lib='lib%.a'
3511         _ld_path='-libpath:'
3512         # -Qdiag-error to make icl error when seeing certain unknown arguments
3513         _flags='-nologo -Qdiag-error:4044,10157'
3514         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3515         # with MSVC which enables it by default.
3516         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3517         if [ $pfx = hostcc ]; then
3518             append _cflags -Dsnprintf=_snprintf
3519         fi
3520         disable stripping
3521     elif $_cc 2>&1 | grep -q Microsoft; then
3522         _type=msvc
3523         _ident=$($cc 2>&1 | head -n1)
3524         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3525         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3526         _cflags_speed="-O2"
3527         _cflags_size="-O1"
3528         if $_cc 2>&1 | grep -q Linker; then
3529             _ld_o='-out:$@'
3530         else
3531             _ld_o='-Fe$@'
3532         fi
3533         _cc_o='-Fo$@'
3534         _cc_e='-P -Fi$@'
3535         _flags_filter=msvc_flags
3536         _ld_lib='lib%.a'
3537         _ld_path='-libpath:'
3538         _flags='-nologo'
3539         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3540         if [ $pfx = hostcc ]; then
3541             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3542                 append _cflags -Dsnprintf=_snprintf
3543             fi
3544         fi
3545         disable stripping
3546     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3547         _type=cparser
3548         _ident=$($_cc --version | head -n1)
3549         _depflags='-MMD'
3550         _cflags_speed='-O4'
3551         _cflags_size='-O2'
3552         _flags_filter=cparser_flags
3553     fi
3554
3555     eval ${pfx}_type=\$_type
3556     eval ${pfx}_ident=\$_ident
3557 }
3558
3559 set_ccvars(){
3560     eval ${1}_C=\${_cc_c-\${${1}_C}}
3561     eval ${1}_E=\${_cc_e-\${${1}_E}}
3562     eval ${1}_O=\${_cc_o-\${${1}_O}}
3563
3564     if [ -n "$_depflags" ]; then
3565         eval ${1}_DEPFLAGS=\$_depflags
3566     else
3567         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3568         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3569         eval DEP${1}FLAGS=\$_flags
3570     fi
3571 }
3572
3573 probe_cc cc "$cc"
3574 cflags_filter=$_flags_filter
3575 cflags_speed=$_cflags_speed
3576 cflags_size=$_cflags_size
3577 cflags_noopt=$_cflags_noopt
3578 add_cflags $_flags $_cflags
3579 cc_ldflags=$_ldflags
3580 set_ccvars CC
3581
3582 probe_cc hostcc "$host_cc"
3583 host_cflags_filter=$_flags_filter
3584 add_host_cflags  $_flags $_cflags
3585 set_ccvars HOSTCC
3586
3587 test -n "$cc_type" && enable $cc_type ||
3588     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3589
3590 : ${as_default:=$cc}
3591 : ${dep_cc_default:=$cc}
3592 : ${ld_default:=$cc}
3593 : ${host_ld_default:=$host_cc}
3594 set_default ar as dep_cc ld host_ld windres
3595
3596 probe_cc as "$as"
3597 asflags_filter=$_flags_filter
3598 add_asflags $_flags $_cflags
3599 set_ccvars AS
3600
3601 probe_cc ld "$ld"
3602 ldflags_filter=$_flags_filter
3603 add_ldflags $_flags $_ldflags
3604 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3605 LD_O=${_ld_o-$LD_O}
3606 LD_LIB=${_ld_lib-$LD_LIB}
3607 LD_PATH=${_ld_path-$LD_PATH}
3608
3609 probe_cc hostld "$host_ld"
3610 host_ldflags_filter=$_flags_filter
3611 add_host_ldflags $_flags $_ldflags
3612 HOSTLD_O=${_ld_o-$HOSTLD_O}
3613
3614 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3615     probe_cc depcc "$dep_cc"
3616     CCDEP=${_DEPCMD:-$DEPCMD}
3617     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3618     DEPCCFLAGS=$_flags
3619 fi
3620
3621 if $ar 2>&1 | grep -q Microsoft; then
3622     arflags="-nologo"
3623     ar_o='-out:$@'
3624 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3625     arflags="rq"
3626     ar_o='$@'
3627 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3628     arflags='-Xany -r -c'
3629     ar_o='$@'
3630 elif $ar 2>&1 | grep -q "\[D\] "; then
3631     arflags="rcD"
3632     ar_o='$@'
3633 else
3634     arflags="rc"
3635     ar_o='$@'
3636 fi
3637
3638 add_cflags $extra_cflags
3639 add_cxxflags $extra_cxxflags
3640 add_asflags $extra_cflags
3641
3642 if test -n "$sysroot"; then
3643     case "$cc_type" in
3644         gcc|llvm_gcc|clang)
3645             add_cppflags --sysroot="$sysroot"
3646             add_ldflags --sysroot="$sysroot"
3647 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3648             add_cppflags -isysroot "$sysroot"
3649             add_ldflags -isysroot "$sysroot"
3650         ;;
3651         tms470)
3652             add_cppflags -I"$sysinclude"
3653             add_ldflags  --sysroot="$sysroot"
3654         ;;
3655     esac
3656 fi
3657
3658 if test "$cpu" = host; then
3659     enabled cross_compile &&
3660         die "--cpu=host makes no sense when cross-compiling."
3661
3662     case "$cc_type" in
3663         gcc|llvm_gcc)
3664             check_native(){
3665                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3666                 sed -n "/cc1.*$1=/{
3667                             s/.*$1=\\([^ ]*\\).*/\\1/
3668                             p
3669                             q
3670                         }" $TMPE
3671             }
3672             cpu=$(check_native -march || check_native -mcpu)
3673         ;;
3674     esac
3675
3676     test "${cpu:-host}" = host &&
3677         die "--cpu=host not supported with compiler $cc"
3678 fi
3679
3680 # Deal with common $arch aliases
3681 case "$arch" in
3682     aarch64|arm64)
3683         arch="aarch64"
3684     ;;
3685     arm*|iPad*|iPhone*)
3686         arch="arm"
3687     ;;
3688     mips*|IP*)
3689         arch="mips"
3690     ;;
3691     parisc*|hppa*)
3692         arch="parisc"
3693     ;;
3694     "Power Macintosh"|ppc*|powerpc*)
3695         arch="ppc"
3696     ;;
3697     s390|s390x)
3698         arch="s390"
3699     ;;
3700     sh4|sh)
3701         arch="sh4"
3702     ;;
3703     sun4u|sparc*)
3704         arch="sparc"
3705     ;;
3706     tilegx|tile-gx)
3707         arch="tilegx"
3708     ;;
3709     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3710         arch="x86"
3711     ;;
3712 esac
3713
3714 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3715 enable $arch
3716
3717 # Add processor-specific flags
3718 if enabled aarch64; then
3719
3720     case $cpu in
3721         armv*)
3722             cpuflags="-march=$cpu"
3723         ;;
3724         *)
3725             cpuflags="-mcpu=$cpu"
3726         ;;
3727     esac
3728
3729 elif enabled alpha; then
3730
3731     cpuflags="-mcpu=$cpu"
3732
3733 elif enabled arm; then
3734
3735     check_arm_arch() {
3736         check_cpp_condition stddef.h \
3737             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3738             $cpuflags
3739     }
3740
3741     probe_arm_arch() {
3742         if   check_arm_arch 4;        then echo armv4;
3743         elif check_arm_arch 4T;       then echo armv4t;
3744         elif check_arm_arch 5;        then echo armv5;
3745         elif check_arm_arch 5E;       then echo armv5e;
3746         elif check_arm_arch 5T;       then echo armv5t;
3747         elif check_arm_arch 5TE;      then echo armv5te;
3748         elif check_arm_arch 5TEJ;     then echo armv5te;
3749         elif check_arm_arch 6;        then echo armv6;
3750         elif check_arm_arch 6J;       then echo armv6j;
3751         elif check_arm_arch 6K;       then echo armv6k;
3752         elif check_arm_arch 6Z;       then echo armv6z;
3753         elif check_arm_arch 6ZK;      then echo armv6zk;
3754         elif check_arm_arch 6T2;      then echo armv6t2;
3755         elif check_arm_arch 7;        then echo armv7;
3756         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3757         elif check_arm_arch 7S;       then echo armv7-a;
3758         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3759         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3760         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3761         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3762         fi
3763     }
3764
3765     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3766
3767     case $cpu in
3768         armv*)
3769             cpuflags="-march=$cpu"
3770             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3771         ;;
3772         *)
3773             cpuflags="-mcpu=$cpu"
3774             case $cpu in
3775                 cortex-a*)                               subarch=armv7a  ;;
3776                 cortex-r*)                               subarch=armv7r  ;;
3777                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3778                 arm11*)                                  subarch=armv6   ;;
3779                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3780                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3781                 *)                             subarch=$(probe_arm_arch) ;;
3782             esac
3783         ;;
3784     esac
3785
3786     case "$subarch" in
3787         armv5t*)    enable fast_clz                ;;
3788         armv[6-8]*)
3789             enable fast_clz
3790             disabled fast_unaligned || enable fast_unaligned
3791             ;;
3792     esac
3793
3794 elif enabled avr32; then
3795
3796     case $cpu in
3797         ap7[02]0[0-2])
3798             subarch="avr32_ap"
3799             cpuflags="-mpart=$cpu"
3800         ;;
3801         ap)
3802             subarch="avr32_ap"
3803             cpuflags="-march=$cpu"
3804         ;;
3805         uc3[ab]*)
3806             subarch="avr32_uc"
3807             cpuflags="-mcpu=$cpu"
3808         ;;
3809         uc)
3810             subarch="avr32_uc"
3811             cpuflags="-march=$cpu"
3812         ;;
3813     esac
3814
3815 elif enabled bfin; then
3816
3817     cpuflags="-mcpu=$cpu"
3818
3819 elif enabled mips; then
3820
3821     cpuflags="-march=$cpu"
3822
3823     case $cpu in
3824         24kc)
3825             disable mipsfpu
3826             disable mipsdspr1
3827             disable mipsdspr2
3828         ;;
3829         24kf*)
3830             disable mipsdspr1
3831             disable mipsdspr2
3832         ;;
3833         24kec|34kc|1004kc)
3834             disable mipsfpu
3835             disable mipsdspr2
3836         ;;
3837         24kef*|34kf*|1004kf*)
3838             disable mipsdspr2
3839         ;;
3840         74kc)
3841             disable mipsfpu
3842         ;;
3843     esac
3844
3845 elif enabled ppc; then
3846
3847     disable ldbrx
3848     disable vsx
3849
3850     case $(tolower $cpu) in
3851         601|ppc601|powerpc601)
3852             cpuflags="-mcpu=601"
3853             disable altivec
3854         ;;
3855         603*|ppc603*|powerpc603*)
3856             cpuflags="-mcpu=603"
3857             disable altivec
3858         ;;
3859         604*|ppc604*|powerpc604*)
3860             cpuflags="-mcpu=604"
3861             disable altivec
3862         ;;
3863         g3|75*|ppc75*|powerpc75*)
3864             cpuflags="-mcpu=750"
3865             disable altivec
3866         ;;
3867         g4|745*|ppc745*|powerpc745*)
3868             cpuflags="-mcpu=7450"
3869         ;;
3870         74*|ppc74*|powerpc74*)
3871             cpuflags="-mcpu=7400"
3872         ;;
3873         g5|970|ppc970|powerpc970)
3874             cpuflags="-mcpu=970"
3875         ;;
3876         power[3-8]*)
3877             cpuflags="-mcpu=$cpu"
3878         ;;
3879         cell)
3880             cpuflags="-mcpu=cell"
3881             enable ldbrx
3882         ;;
3883         e500mc)
3884             cpuflags="-mcpu=e500mc"
3885             disable altivec
3886         ;;
3887         e500v2)
3888             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3889             disable altivec
3890             disable dcbzl
3891         ;;
3892         e500)
3893             cpuflags="-mcpu=8540 -mhard-float"
3894             disable altivec
3895             disable dcbzl
3896         ;;
3897     esac
3898
3899 elif enabled sparc; then
3900
3901     case $cpu in
3902         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3903             cpuflags="-mcpu=$cpu"
3904         ;;
3905         ultrasparc*|niagara[234])
3906             cpuflags="-mcpu=$cpu"
3907         ;;
3908     esac
3909
3910 elif enabled x86; then
3911
3912     case $cpu in
3913         i[345]86|pentium)
3914             cpuflags="-march=$cpu"
3915             disable i686
3916             disable mmx
3917         ;;
3918         # targets that do NOT support nopl and conditional mov (cmov)
3919         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3920             cpuflags="-march=$cpu"
3921             disable i686
3922         ;;
3923         # targets that do support nopl and conditional mov (cmov)
3924         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3925         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3926             cpuflags="-march=$cpu"
3927             enable i686
3928             enable fast_cmov
3929         ;;
3930         # targets that do support conditional mov but on which it's slow
3931         pentium4|pentium4m|prescott|nocona)
3932             cpuflags="-march=$cpu"
3933             enable i686
3934             disable fast_cmov
3935         ;;
3936     esac
3937
3938 fi
3939
3940 if [ "$cpu" != generic ]; then
3941     add_cflags  $cpuflags
3942     add_asflags $cpuflags
3943 fi
3944
3945 # compiler sanity check
3946 check_exec <<EOF
3947 int main(void){ return 0; }
3948 EOF
3949 if test "$?" != 0; then
3950     echo "$cc is unable to create an executable file."
3951     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3952         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3953         echo "Only do this if you know what cross compiling means."
3954     fi
3955     die "C compiler test failed."
3956 fi
3957
3958 add_cppflags -D_ISOC99_SOURCE
3959 add_cxxflags -D__STDC_CONSTANT_MACROS
3960 check_cflags -std=c99
3961 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3962 #include <stdlib.h>
3963 EOF
3964 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3965 #include <stdlib.h>
3966 EOF
3967
3968 add_host_cppflags -D_ISOC99_SOURCE
3969 check_host_cflags -std=c99
3970 check_host_cflags -Wall
3971 check_host_cflags -O3
3972
3973 check_64bit(){
3974     arch32=$1
3975     arch64=$2
3976     expr=$3
3977     check_code cc "" "int test[2*($expr) - 1]" &&
3978         subarch=$arch64 || subarch=$arch32
3979 }
3980
3981 case "$arch" in
3982     aarch64|alpha|ia64)
3983         spic=$shared
3984     ;;
3985     mips)
3986         check_64bit mips mips64 '_MIPS_SIM > 1'
3987         spic=$shared
3988     ;;
3989     parisc)
3990         check_64bit parisc parisc64 'sizeof(void *) > 4'
3991         spic=$shared
3992     ;;
3993     ppc)
3994         check_64bit ppc ppc64 'sizeof(void *) > 4'
3995         spic=$shared
3996     ;;
3997     s390)
3998         check_64bit s390 s390x 'sizeof(void *) > 4'
3999         spic=$shared
4000     ;;
4001     sparc)
4002         check_64bit sparc sparc64 'sizeof(void *) > 4'
4003         spic=$shared
4004     ;;
4005     x86)
4006         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4007         # Treat x32 as x64 for now. Note it also needs spic=$shared
4008         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4009             subarch=x86_64
4010         if test "$subarch" = "x86_64"; then
4011             spic=$shared
4012         fi
4013     ;;
4014     ppc)
4015         check_cc <<EOF && subarch="ppc64"
4016         int test[(int)sizeof(char*) - 7];
4017 EOF
4018     ;;
4019 esac
4020
4021 enable $subarch
4022 enabled spic && enable_weak pic
4023
4024 # OS specific
4025 case $target_os in
4026     aix)
4027         SHFLAGS=-shared
4028         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4029         enabled shared && add_ldflags -Wl,-brtl
4030         ;;
4031     android)
4032         disable symver
4033         enable section_data_rel_ro
4034         SLIB_INSTALL_NAME='$(SLIBNAME)'
4035         SLIB_INSTALL_LINKS=
4036         # soname not set on purpose
4037         SHFLAGS=-shared
4038         ;;
4039     haiku)
4040         prefix_default="/boot/common"
4041         network_extralibs="-lnetwork"
4042         host_libs=
4043         ;;
4044     sunos)
4045         SHFLAGS='-shared -Wl,-h,$$(@F)'
4046         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4047         network_extralibs="-lsocket -lnsl"
4048         add_cppflags -D__EXTENSIONS__
4049         # When using suncc to build, the Solaris linker will mark
4050         # an executable with each instruction set encountered by
4051         # the Solaris assembler.  As our libraries contain their own
4052         # guards for processor-specific code, instead suppress
4053         # generation of the HWCAPS ELF section on Solaris x86 only.
4054         enabled_all suncc x86 &&
4055             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4056             add_ldflags -Wl,-M,mapfile
4057         nm_default='nm -P -g'
4058         ;;
4059     netbsd)
4060         disable symver
4061         oss_indev_extralibs="-lossaudio"
4062         oss_outdev_extralibs="-lossaudio"
4063         enabled gcc || check_ldflags -Wl,-zmuldefs
4064         ;;
4065     openbsd|bitrig)
4066         disable symver
4067         SHFLAGS='-shared'
4068         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4069         SLIB_INSTALL_LINKS=
4070         oss_indev_extralibs="-lossaudio"
4071         oss_outdev_extralibs="-lossaudio"
4072         ;;