configure: Fix build without libmfx
[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   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-avutil         disable libavutil build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Hardware accelerators:
153   --disable-d3d11va        disable D3D11VA code [autodetect]
154   --disable-dxva2          disable DXVA2 code [autodetect]
155   --disable-vaapi          disable VAAPI code [autodetect]
156   --disable-vda            disable VDA code [autodetect]
157   --disable-vdpau          disable VDPAU code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
200   --enable-frei0r          enable frei0r video filtering [no]
201   --enable-gnutls          enable gnutls, needed for https support
202                            if openssl is not used [no]
203   --disable-iconv          disable iconv [autodetect]
204   --enable-ladspa          enable LADSPA audio filtering [no]
205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
206   --enable-libass          enable libass subtitles rendering,
207                            needed for subtitles and ass filter [no]
208   --enable-libbluray       enable BluRay reading using libbluray [no]
209   --enable-libbs2b         enable bs2b DSP library [no]
210   --enable-libcaca         enable textual display using libcaca [no]
211   --enable-libcelt         enable CELT decoding via libcelt [no]
212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
214                            and libraw1394 [no]
215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
216   --enable-libfaac         enable AAC encoding via libfaac [no]
217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
221   --enable-libgme          enable Game Music Emu via libgme [no]
222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
225   --enable-libmfx          enable HW acceleration through libmfx
226   --enable-libmodplug      enable ModPlug via libmodplug [no]
227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
228   --enable-libnut          enable NUT (de)muxing via libnut,
229                            native (de)muxer exists [no]
230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
232   --enable-libopencv       enable video filtering via libopencv [no]
233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
235   --enable-libopus         enable Opus de/encoding via libopus [no]
236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
237   --enable-libquvi         enable quvi input via libquvi [no]
238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
242   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
243   --enable-libsoxr         enable Include libsoxr resampling [no]
244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
245   --enable-libssh          enable SFTP protocol via libssh [no]
246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
247   --enable-libtheora       enable Theora encoding via libtheora [no]
248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
251   --enable-libvidstab      enable video stabilization using vid.stab [no]
252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
255                            native implementation exists [no]
256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
258   --enable-libwebp         enable WebP encoding via libwebp [no]
259   --enable-libx264         enable H.264 encoding via x264 [no]
260   --enable-libx265         enable HEVC encoding via x265 [no]
261   --enable-libxavs         enable AVS encoding via xavs [no]
262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
266   --enable-libxvid         enable Xvid encoding via xvidcore,
267                            native MPEG-4/Xvid encoder exists [no]
268   --enable-libzmq          enable message passing via libzmq [no]
269   --enable-libzvbi         enable teletext support via libzvbi [no]
270   --disable-lzma           disable lzma [autodetect]
271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
272   --enable-mmal            enable decoding via MMAL [no]
273   --enable-nvenc           enable NVIDIA NVENC support [no]
274   --enable-openal          enable OpenAL 1.1 capture support [no]
275   --enable-opencl          enable OpenCL code
276   --enable-opengl          enable OpenGL rendering [no]
277   --enable-openssl         enable openssl, needed for https support
278                            if gnutls is not used [no]
279   --disable-sdl            disable sdl [autodetect]
280   --disable-securetransport disable Secure Transport, needed for TLS support
281                            on OSX if openssl and gnutls are not used [autodetect]
282   --enable-x11grab         enable X11 grabbing (legacy) [no]
283   --disable-xlib           disable xlib [autodetect]
284   --disable-zlib           disable zlib [autodetect]
285
286 Toolchain options:
287   --arch=ARCH              select architecture [$arch]
288   --cpu=CPU                select the minimum required CPU (affects
289                            instruction selection, may crash on older CPUs)
290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
291   --progs-suffix=SUFFIX    program name suffix []
292   --enable-cross-compile   assume a cross-compiler is used
293   --sysroot=PATH           root of cross-build tree
294   --sysinclude=PATH        location of cross-build system headers
295   --target-os=OS           compiler targets OS [$target_os]
296   --target-exec=CMD        command to run executables on target
297   --target-path=DIR        path to view of build directory on target
298   --target-samples=DIR     path to samples directory on target
299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
300   --toolchain=NAME         set tool defaults according to NAME
301   --nm=NM                  use nm tool NM [$nm_default]
302   --ar=AR                  use archive tool AR [$ar_default]
303   --as=AS                  use assembler AS [$as_default]
304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
306   --cc=CC                  use C compiler CC [$cc_default]
307   --cxx=CXX                use C compiler CXX [$cxx_default]
308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
309   --ld=LD                  use linker LD [$ld_default]
310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
314   --host-cc=HOSTCC         use host C compiler HOSTCC
315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
317   --host-ld=HOSTLD         use host linker HOSTLD
318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
319   --host-libs=HLIBS        use libs HLIBS when linking for host
320   --host-os=OS             compiler host OS [$target_os]
321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
325   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
326   --extra-libs=ELIBS       add ELIBS [$ELIBS]
327   --extra-version=STRING   version string suffix []
328   --optflags=OPTFLAGS      override optimization-related compiler flags
329   --build-suffix=SUFFIX    library name suffix []
330   --enable-pic             build position-independent code
331   --enable-thumb           compile for Thumb instruction set
332   --enable-lto             use link-time optimization
333   --env="ENV=override"     override the environment variables
334
335 Advanced options (experts only):
336   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
337   --disable-symver         disable symbol versioning
338   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
339   --disable-safe-bitstream-reader
340                            disable buffer boundary checking in bitreaders
341                            (faster, but may crash)
342   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
343   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
344
345 Optimization options (experts only):
346   --disable-asm            disable all assembly optimizations
347   --disable-altivec        disable AltiVec optimizations
348   --disable-vsx            disable VSX optimizations
349   --disable-power8         disable POWER8 optimizations
350   --disable-amd3dnow       disable 3DNow! optimizations
351   --disable-amd3dnowext    disable 3DNow! extended optimizations
352   --disable-mmx            disable MMX optimizations
353   --disable-mmxext         disable MMXEXT optimizations
354   --disable-sse            disable SSE optimizations
355   --disable-sse2           disable SSE2 optimizations
356   --disable-sse3           disable SSE3 optimizations
357   --disable-ssse3          disable SSSE3 optimizations
358   --disable-sse4           disable SSE4 optimizations
359   --disable-sse42          disable SSE4.2 optimizations
360   --disable-avx            disable AVX optimizations
361   --disable-xop            disable XOP optimizations
362   --disable-fma3           disable FMA3 optimizations
363   --disable-fma4           disable FMA4 optimizations
364   --disable-avx2           disable AVX2 optimizations
365   --disable-armv5te        disable armv5te optimizations
366   --disable-armv6          disable armv6 optimizations
367   --disable-armv6t2        disable armv6t2 optimizations
368   --disable-vfp            disable VFP optimizations
369   --disable-neon           disable NEON optimizations
370   --disable-inline-asm     disable use of inline assembly
371   --disable-yasm           disable use of nasm/yasm assembly
372   --disable-mips32r5       disable MIPS32R5 optimizations
373   --disable-mips64r6       disable MIPS64R6 optimizations
374   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
375   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
376   --disable-msa            disable MSA optimizations
377   --disable-mipsfpu        disable floating point MIPS optimizations
378   --disable-mmi            disable Loongson SIMD optimizations
379   --disable-fast-unaligned consider unaligned accesses slow
380
381 Developer options (useful when working on FFmpeg itself):
382   --disable-debug          disable debugging symbols
383   --enable-debug=LEVEL     set the debug level [$debuglevel]
384   --disable-optimizations  disable compiler optimizations
385   --enable-extra-warnings  enable more compiler warnings
386   --disable-stripping      disable stripping of executables and shared libraries
387   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
388                            2 causes a slowdown at runtime.
389   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
390   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
391                            leaks and errors, using the specified valgrind binary.
392                            Cannot be combined with --target-exec
393   --enable-ftrapv          Trap arithmetic overflows
394   --samples=PATH           location of test samples for FATE, if not set use
395                            \$FATE_SAMPLES at make invocation time.
396   --enable-neon-clobber-test check NEON registers for clobbering (should be
397                            used only for debugging purposes)
398   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
399                            should be used only for debugging purposes)
400   --enable-random          randomly enable/disable components
401   --disable-random
402   --enable-random=LIST     randomly enable/disable specific components or
403   --disable-random=LIST    component groups. LIST is a comma-separated list
404                            of NAME[:PROB] entries where NAME is a component
405                            (group) and PROB the probability associated with
406                            NAME (default 0.5).
407   --random-seed=VALUE      seed value for --enable/disable-random
408   --disable-valgrind-backtrace do not print a backtrace under Valgrind
409                            (only applies to --disable-optimizations builds)
410
411 NOTE: Object files are built at the place where configure is launched.
412 EOF
413   exit 0
414 }
415
416 quotes='""'
417
418 log(){
419     echo "$@" >> $logfile
420 }
421
422 log_file(){
423     log BEGIN $1
424     pr -n -t $1 >> $logfile
425     log END $1
426 }
427
428 echolog(){
429     log "$@"
430     echo "$@"
431 }
432
433 warn(){
434     log "WARNING: $*"
435     WARNINGS="${WARNINGS}WARNING: $*\n"
436 }
437
438 die(){
439     echolog "$@"
440     cat <<EOF
441
442 If you think configure made a mistake, make sure you are using the latest
443 version from Git.  If the latest version fails, report the problem to the
444 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
445 EOF
446     if disabled logging; then
447         cat <<EOF
448 Rerun configure with logging enabled (do not use --disable-logging), and
449 include the log this produces with your report.
450 EOF
451     else
452         cat <<EOF
453 Include the log file "$logfile" produced by configure as this will help
454 solve the problem.
455 EOF
456     fi
457     exit 1
458 }
459
460 # Avoid locale weirdness, besides we really just want to translate ASCII.
461 toupper(){
462     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
463 }
464
465 tolower(){
466     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
467 }
468
469 c_escape(){
470     echo "$*" | sed 's/["\\]/\\\0/g'
471 }
472
473 sh_quote(){
474     v=$(echo "$1" | sed "s/'/'\\\\''/g")
475     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
476     echo "$v"
477 }
478
479 cleanws(){
480     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
481 }
482
483 filter(){
484     pat=$1
485     shift
486     for v; do
487         eval "case $v in $pat) echo $v ;; esac"
488     done
489 }
490
491 filter_out(){
492     pat=$1
493     shift
494     for v; do
495         eval "case $v in $pat) ;; *) echo $v ;; esac"
496     done
497 }
498
499 map(){
500     m=$1
501     shift
502     for v; do eval $m; done
503 }
504
505 add_suffix(){
506     suffix=$1
507     shift
508     for v; do echo ${v}${suffix}; done
509 }
510
511 set_all(){
512     value=$1
513     shift
514     for var in $*; do
515         eval $var=$value
516     done
517 }
518
519 set_weak(){
520     value=$1
521     shift
522     for var; do
523         eval : \${$var:=$value}
524     done
525 }
526
527 sanitize_var_name(){
528     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
529 }
530
531 set_safe(){
532     var=$1
533     shift
534     eval $(sanitize_var_name "$var")='$*'
535 }
536
537 get_safe(){
538     eval echo \$$(sanitize_var_name "$1")
539 }
540
541 pushvar(){
542     for pvar in $*; do
543         eval level=\${${pvar}_level:=0}
544         eval ${pvar}_${level}="\$$pvar"
545         eval ${pvar}_level=$(($level+1))
546     done
547 }
548
549 popvar(){
550     for pvar in $*; do
551         eval level=\${${pvar}_level:-0}
552         test $level = 0 && continue
553         eval level=$(($level-1))
554         eval $pvar="\${${pvar}_${level}}"
555         eval ${pvar}_level=$level
556         eval unset ${pvar}_${level}
557     done
558 }
559
560 enable(){
561     set_all yes $*
562 }
563
564 disable(){
565     set_all no $*
566 }
567
568 enable_weak(){
569     set_weak yes $*
570 }
571
572 disable_weak(){
573     set_weak no $*
574 }
575
576 enable_safe(){
577     for var; do
578         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
579     done
580 }
581
582 disable_safe(){
583     for var; do
584         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
585     done
586 }
587
588 do_enable_deep(){
589     for var; do
590         enabled $var && continue
591         eval sel="\$${var}_select"
592         eval sgs="\$${var}_suggest"
593         pushvar var sgs
594         enable_deep $sel
595         popvar sgs
596         enable_deep_weak $sgs
597         popvar var
598     done
599 }
600
601 enable_deep(){
602     do_enable_deep $*
603     enable $*
604 }
605
606 enable_deep_weak(){
607     for var; do
608         disabled $var && continue
609         pushvar var
610         do_enable_deep $var
611         popvar var
612         enable_weak $var
613     done
614 }
615
616 enabled(){
617     test "${1#!}" = "$1" && op== || op=!=
618     eval test "x\$${1#!}" $op "xyes"
619 }
620
621 disabled(){
622     test "${1#!}" = "$1" && op== || op=!=
623     eval test "x\$${1#!}" $op "xno"
624 }
625
626 enabled_all(){
627     for opt; do
628         enabled $opt || return 1
629     done
630 }
631
632 disabled_all(){
633     for opt; do
634         disabled $opt || return 1
635     done
636 }
637
638 enabled_any(){
639     for opt; do
640         enabled $opt && return 0
641     done
642 }
643
644 disabled_any(){
645     for opt; do
646         disabled $opt && return 0
647     done
648     return 1
649 }
650
651 set_default(){
652     for opt; do
653         eval : \${$opt:=\$${opt}_default}
654     done
655 }
656
657 is_in(){
658     value=$1
659     shift
660     for var in $*; do
661         [ $var = $value ] && return 0
662     done
663     return 1
664 }
665
666 do_check_deps(){
667     for cfg; do
668         cfg="${cfg#!}"
669         enabled ${cfg}_checking && die "Circular dependency for $cfg."
670         disabled ${cfg}_checking && continue
671         enable ${cfg}_checking
672         append allopts $cfg
673
674         eval dep_all="\$${cfg}_deps"
675         eval dep_any="\$${cfg}_deps_any"
676         eval dep_sel="\$${cfg}_select"
677         eval dep_sgs="\$${cfg}_suggest"
678         eval dep_ifa="\$${cfg}_if"
679         eval dep_ifn="\$${cfg}_if_any"
680
681         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
682         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
683         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
684
685         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
686         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
687         enabled_all  $dep_all || disable $cfg
688         enabled_any  $dep_any || disable $cfg
689         disabled_any $dep_sel && disable $cfg
690
691         if enabled $cfg; then
692             enable_deep $dep_sel
693             enable_deep_weak $dep_sgs
694         fi
695
696         disable ${cfg}_checking
697     done
698 }
699
700 check_deps(){
701     unset allopts
702
703     do_check_deps "$@"
704
705     for cfg in $allopts; do
706         enabled $cfg || continue
707         eval dep_extralibs="\$${cfg}_extralibs"
708         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
709     done
710 }
711
712 print_config(){
713     pfx=$1
714     files=$2
715     shift 2
716     map 'eval echo "$v \${$v:-no}"' "$@" |
717     awk "BEGIN { split(\"$files\", files) }
718         {
719             c = \"$pfx\" toupper(\$1);
720             v = \$2;
721             sub(/yes/, 1, v);
722             sub(/no/,  0, v);
723             for (f in files) {
724                 file = files[f];
725                 if (file ~ /\\.h\$/) {
726                     printf(\"#define %s %d\\n\", c, v) >>file;
727                 } else if (file ~ /\\.asm\$/) {
728                     printf(\"%%define %s %d\\n\", c, v) >>file;
729                 } else if (file ~ /\\.mak\$/) {
730                     n = -v ? \"\" : \"!\";
731                     printf(\"%s%s=yes\\n\", n, c) >>file;
732                 } else if (file ~ /\\.texi\$/) {
733                     pre = -v ? \"\" : \"@c \";
734                     yesno = \$2;
735                     c2 = tolower(c);
736                     gsub(/_/, \"-\", c2);
737                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
738                 }
739             }
740         }"
741 }
742
743 print_enabled(){
744     suf=$1
745     shift
746     for v; do
747         enabled $v && printf "%s\n" ${v%$suf};
748     done
749 }
750
751 append(){
752     var=$1
753     shift
754     eval "$var=\"\$$var $*\""
755 }
756
757 prepend(){
758     var=$1
759     shift
760     eval "$var=\"$* \$$var\""
761 }
762
763 unique(){
764     var=$1
765     uniq_list=""
766     for tok in $(eval echo \$$var); do
767         uniq_list="$(filter_out $tok $uniq_list) $tok"
768     done
769     eval "$var=\"${uniq_list}\""
770 }
771
772 add_cppflags(){
773     append CPPFLAGS "$@"
774 }
775
776 add_cflags(){
777     append CFLAGS $($cflags_filter "$@")
778 }
779
780 add_cxxflags(){
781     append CXXFLAGS $($cflags_filter "$@")
782 }
783
784 add_asflags(){
785     append ASFLAGS $($asflags_filter "$@")
786 }
787
788 add_ldflags(){
789     append LDFLAGS $($ldflags_filter "$@")
790 }
791
792 add_ldexeflags(){
793     append LDEXEFLAGS $($ldflags_filter "$@")
794 }
795
796 add_ldlibflags(){
797     append LDLIBFLAGS $($ldflags_filter "$@")
798 }
799
800 add_stripflags(){
801     append ASMSTRIPFLAGS "$@"
802 }
803
804 add_extralibs(){
805     prepend extralibs $($ldflags_filter "$@")
806 }
807
808 add_host_cppflags(){
809     append host_cppflags "$@"
810 }
811
812 add_host_cflags(){
813     append host_cflags $($host_cflags_filter "$@")
814 }
815
816 add_host_ldflags(){
817     append host_ldflags $($host_ldflags_filter "$@")
818 }
819
820 add_compat(){
821     append compat_objs $1
822     shift
823     map 'add_cppflags -D$v' "$@"
824 }
825
826 check_cmd(){
827     log "$@"
828     "$@" >> $logfile 2>&1
829 }
830
831 check_stat(){
832     log check_stat "$@"
833     stat "$1" >> $logfile 2>&1
834 }
835
836 cc_o(){
837     eval printf '%s\\n' $CC_O
838 }
839
840 cc_e(){
841     eval printf '%s\\n' $CC_E
842 }
843
844 check_cc(){
845     log check_cc "$@"
846     cat > $TMPC
847     log_file $TMPC
848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
849 }
850
851 check_cxx(){
852     log check_cxx "$@"
853     cat > $TMPCPP
854     log_file $TMPCPP
855     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
856 }
857
858 check_oc(){
859     log check_oc "$@"
860     cat > $TMPM
861     log_file $TMPM
862     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
863 }
864
865 check_cpp(){
866     log check_cpp "$@"
867     cat > $TMPC
868     log_file $TMPC
869     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
870 }
871
872 as_o(){
873     eval printf '%s\\n' $AS_O
874 }
875
876 check_as(){
877     log check_as "$@"
878     cat > $TMPS
879     log_file $TMPS
880     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
881 }
882
883 check_inline_asm(){
884     log check_inline_asm "$@"
885     name="$1"
886     code="$2"
887     shift 2
888     disable $name
889     check_cc "$@" <<EOF && enable $name
890 void foo(void){ __asm__ volatile($code); }
891 EOF
892 }
893
894 check_insn(){
895     log check_insn "$@"
896     check_inline_asm ${1}_inline "\"$2\""
897     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
898 }
899
900 check_yasm(){
901     log check_yasm "$@"
902     echo "$1" > $TMPS
903     log_file $TMPS
904     shift 1
905     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
906 }
907
908 ld_o(){
909     eval printf '%s\\n' $LD_O
910 }
911
912 check_ld(){
913     log check_ld "$@"
914     type=$1
915     shift 1
916     flags=$(filter_out '-l*|*.so' $@)
917     libs=$(filter '-l*|*.so' $@)
918     check_$type $($cflags_filter $flags) || return
919     flags=$($ldflags_filter $flags)
920     libs=$($ldflags_filter $libs)
921     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
922 }
923
924 print_include(){
925     hdr=$1
926     test "${hdr%.h}" = "${hdr}" &&
927         echo "#include $hdr"    ||
928         echo "#include <$hdr>"
929 }
930
931 check_code(){
932     log check_code "$@"
933     check=$1
934     headers=$2
935     code=$3
936     shift 3
937     {
938         for hdr in $headers; do
939             print_include $hdr
940         done
941         echo "int main(void) { $code; return 0; }"
942     } | check_$check "$@"
943 }
944
945 check_cppflags(){
946     log check_cppflags "$@"
947     check_cc "$@" <<EOF && append CPPFLAGS "$@"
948 int x;
949 EOF
950 }
951
952 test_cflags(){
953     log test_cflags "$@"
954     set -- $($cflags_filter "$@")
955     check_cc "$@" <<EOF
956 int x;
957 EOF
958 }
959
960 check_cflags(){
961     log check_cflags "$@"
962     test_cflags "$@" && add_cflags "$@"
963 }
964
965 check_cxxflags(){
966     log check_cxxflags "$@"
967     set -- $($cflags_filter "$@")
968     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
969 int x;
970 EOF
971 }
972
973 test_ldflags(){
974     log test_ldflags "$@"
975     check_ld "cc" "$@" <<EOF
976 int main(void){ return 0; }
977 EOF
978 }
979
980 check_ldflags(){
981     log check_ldflags "$@"
982     test_ldflags "$@" && add_ldflags "$@"
983 }
984
985 test_stripflags(){
986     log test_stripflags "$@"
987     # call check_cc to get a fresh TMPO
988     check_cc <<EOF
989 int main(void) { return 0; }
990 EOF
991     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
992 }
993
994 check_stripflags(){
995     log check_stripflags "$@"
996     test_stripflags "$@" && add_stripflags "$@"
997 }
998
999 check_header(){
1000     log check_header "$@"
1001     header=$1
1002     shift
1003     disable_safe $header
1004     check_cpp "$@" <<EOF && enable_safe $header
1005 #include <$header>
1006 int x;
1007 EOF
1008 }
1009
1010 check_header_oc(){
1011     log check_header_oc "$@"
1012     rm -f -- "$TMPO"
1013     header=$1
1014     shift
1015     disable_safe $header
1016     {
1017        echo "#include <$header>"
1018        echo "int main(void) { return 0; }"
1019     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1020 }
1021
1022 check_func(){
1023     log check_func "$@"
1024     func=$1
1025     shift
1026     disable $func
1027     check_ld "cc" "$@" <<EOF && enable $func
1028 extern int $func();
1029 int main(void){ $func(); }
1030 EOF
1031 }
1032
1033 check_mathfunc(){
1034     log check_mathfunc "$@"
1035     func=$1
1036     narg=$2
1037     shift 2
1038     test $narg = 2 && args="f, g" || args="f"
1039     disable $func
1040     check_ld "cc" "$@" <<EOF && enable $func
1041 #include <math.h>
1042 float foo(float f, float g) { return $func($args); }
1043 int main(void){ return (int) foo; }
1044 EOF
1045 }
1046
1047 check_func_headers(){
1048     log check_func_headers "$@"
1049     headers=$1
1050     funcs=$2
1051     shift 2
1052     {
1053         for hdr in $headers; do
1054             print_include $hdr
1055         done
1056         for func in $funcs; do
1057             echo "long check_$func(void) { return (long) $func; }"
1058         done
1059         echo "int main(void) { return 0; }"
1060     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1061 }
1062
1063 check_class_headers_cpp(){
1064     log check_class_headers_cpp "$@"
1065     headers=$1
1066     classes=$2
1067     shift 2
1068     {
1069         for hdr in $headers; do
1070             echo "#include <$hdr>"
1071         done
1072         echo "int main(void) { "
1073         i=1
1074         for class in $classes; do
1075             echo "$class obj$i;"
1076             i=$(expr $i + 1)
1077         done
1078         echo "return 0; }"
1079     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1080 }
1081
1082 check_cpp_condition(){
1083     log check_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 check_lib(){
1096     log check_lib "$@"
1097     header="$1"
1098     func="$2"
1099     shift 2
1100     check_header $header && check_func $func "$@" && add_extralibs "$@"
1101 }
1102
1103 check_lib2(){
1104     log check_lib2 "$@"
1105     headers="$1"
1106     funcs="$2"
1107     shift 2
1108     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1109 }
1110
1111 check_lib_cpp(){
1112     log check_lib_cpp "$@"
1113     headers="$1"
1114     classes="$2"
1115     shift 2
1116     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1117 }
1118
1119 check_pkg_config(){
1120     log check_pkg_config "$@"
1121     pkgandversion="$1"
1122     pkg="${1%% *}"
1123     headers="$2"
1124     funcs="$3"
1125     shift 3
1126     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1127     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1128     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1129     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1130         set_safe "${pkg}_cflags" $pkg_cflags   &&
1131         set_safe "${pkg}_libs"   $pkg_libs
1132 }
1133
1134 check_exec(){
1135     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1136 }
1137
1138 check_exec_crash(){
1139     code=$(cat)
1140
1141     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1142     # are safe but may not be available everywhere.  Thus we use
1143     # raise(SIGTERM) instead.  The check is run in a subshell so we
1144     # can redirect the "Terminated" message from the shell.  SIGBUS
1145     # is not defined by standard C so it is used conditionally.
1146
1147     (check_exec "$@") >> $logfile 2>&1 <<EOF
1148 #include <signal.h>
1149 static void sighandler(int sig){
1150     raise(SIGTERM);
1151 }
1152 int foo(void){
1153     $code
1154 }
1155 int (*func_ptr)(void) = foo;
1156 int main(void){
1157     signal(SIGILL, sighandler);
1158     signal(SIGFPE, sighandler);
1159     signal(SIGSEGV, sighandler);
1160 #ifdef SIGBUS
1161     signal(SIGBUS, sighandler);
1162 #endif
1163     return func_ptr();
1164 }
1165 EOF
1166 }
1167
1168 check_type(){
1169     log check_type "$@"
1170     headers=$1
1171     type=$2
1172     shift 2
1173     disable_safe "$type"
1174     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1175 }
1176
1177 check_struct(){
1178     log check_struct "$@"
1179     headers=$1
1180     struct=$2
1181     member=$3
1182     shift 3
1183     disable_safe "${struct}_${member}"
1184     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1185         enable_safe "${struct}_${member}"
1186 }
1187
1188 check_builtin(){
1189     log check_builtin "$@"
1190     name=$1
1191     headers=$2
1192     builtin=$3
1193     shift 3
1194     disable "$name"
1195     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1196 }
1197
1198 check_compile_assert(){
1199     log check_compile_assert "$@"
1200     name=$1
1201     headers=$2
1202     condition=$3
1203     shift 3
1204     disable "$name"
1205     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1206 }
1207
1208 require(){
1209     name="$1"
1210     header="$2"
1211     func="$3"
1212     shift 3
1213     check_lib $header $func "$@" || die "ERROR: $name not found"
1214 }
1215
1216 require2(){
1217     name="$1"
1218     headers="$2"
1219     func="$3"
1220     shift 3
1221     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1222 }
1223
1224 require_cpp(){
1225     name="$1"
1226     headers="$2"
1227     classes="$3"
1228     shift 3
1229     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1230 }
1231
1232 use_pkg_config(){
1233     pkg="$1"
1234     check_pkg_config "$@" || return 1
1235     add_cflags    $(get_safe "${pkg}_cflags")
1236     add_extralibs $(get_safe "${pkg}_libs")
1237 }
1238
1239 require_pkg_config(){
1240     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1241 }
1242
1243 require_libfreetype(){
1244     log require_libfreetype "$@"
1245     pkg="freetype2"
1246     check_cmd $pkg_config --exists --print-errors $pkg \
1247       || die "ERROR: $pkg not found"
1248     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1249     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1250     {
1251         echo "#include <ft2build.h>"
1252         echo "#include FT_FREETYPE_H"
1253         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1254         echo "int main(void) { return 0; }"
1255     } | check_ld "cc" $pkg_cflags $pkg_libs \
1256       && set_safe "${pkg}_cflags" $pkg_cflags \
1257       && set_safe "${pkg}_libs"   $pkg_libs \
1258       || die "ERROR: $pkg not found"
1259     add_cflags    $(get_safe "${pkg}_cflags")
1260     add_extralibs $(get_safe "${pkg}_libs")
1261 }
1262
1263 hostcc_e(){
1264     eval printf '%s\\n' $HOSTCC_E
1265 }
1266
1267 hostcc_o(){
1268     eval printf '%s\\n' $HOSTCC_O
1269 }
1270
1271 check_host_cc(){
1272     log check_host_cc "$@"
1273     cat > $TMPC
1274     log_file $TMPC
1275     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1276 }
1277
1278 check_host_cpp(){
1279     log check_host_cpp "$@"
1280     cat > $TMPC
1281     log_file $TMPC
1282     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1283 }
1284
1285 check_host_cppflags(){
1286     log check_host_cppflags "$@"
1287     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1288 int x;
1289 EOF
1290 }
1291
1292 check_host_cflags(){
1293     log check_host_cflags "$@"
1294     set -- $($host_cflags_filter "$@")
1295     check_host_cc "$@" <<EOF && append host_cflags "$@"
1296 int x;
1297 EOF
1298 }
1299
1300 check_host_cpp_condition(){
1301     log check_host_cpp_condition "$@"
1302     header=$1
1303     condition=$2
1304     shift 2
1305     check_host_cpp "$@" <<EOF
1306 #include <$header>
1307 #if !($condition)
1308 #error "unsatisfied condition: $condition"
1309 #endif
1310 EOF
1311 }
1312
1313 apply(){
1314     file=$1
1315     shift
1316     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1317 }
1318
1319 cp_if_changed(){
1320     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1321     mkdir -p "$(dirname $2)"
1322     $cp_f "$1" "$2"
1323 }
1324
1325 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1326 # system-dependent things.
1327
1328 COMPONENT_LIST="
1329     bsfs
1330     decoders
1331     demuxers
1332     encoders
1333     filters
1334     hwaccels
1335     indevs
1336     muxers
1337     outdevs
1338     parsers
1339     protocols
1340 "
1341
1342 EXAMPLE_LIST="
1343     avio_reading_example
1344     avio_list_dir_example
1345     decoding_encoding_example
1346     demuxing_decoding_example
1347     extract_mvs_example
1348     filter_audio_example
1349     filtering_audio_example
1350     filtering_video_example
1351     metadata_example
1352     muxing_example
1353     qsvdec_example
1354     remuxing_example
1355     resampling_audio_example
1356     scaling_video_example
1357     transcode_aac_example
1358     transcoding_example
1359 "
1360
1361 EXTERNAL_LIBRARY_LIST="
1362     avisynth
1363     bzlib
1364     crystalhd
1365     decklink
1366     frei0r
1367     gnutls
1368     iconv
1369     ladspa
1370     libaacplus
1371     libass
1372     libbluray
1373     libbs2b
1374     libcaca
1375     libcdio
1376     libcelt
1377     libdc1394
1378     libdcadec
1379     libfaac
1380     libfdk_aac
1381     libflite
1382     libfontconfig
1383     libfreetype
1384     libfribidi
1385     libgme
1386     libgsm
1387     libiec61883
1388     libilbc
1389     libmfx
1390     libmodplug
1391     libmp3lame
1392     libnut
1393     libopencore_amrnb
1394     libopencore_amrwb
1395     libopencv
1396     libopenh264
1397     libopenjpeg
1398     libopus
1399     libpulse
1400     libquvi
1401     librtmp
1402     libschroedinger
1403     libshine
1404     libsmbclient
1405     libsnappy
1406     libsoxr
1407     libspeex
1408     libssh
1409     libstagefright_h264
1410     libtheora
1411     libtwolame
1412     libutvideo
1413     libv4l2
1414     libvidstab
1415     libvo_aacenc
1416     libvo_amrwbenc
1417     libvorbis
1418     libvpx
1419     libwavpack
1420     libwebp
1421     libx264
1422     libx265
1423     libxavs
1424     libxcb
1425     libxcb_shm
1426     libxcb_shape
1427     libxcb_xfixes
1428     libxvid
1429     libzmq
1430     libzvbi
1431     lzma
1432     mmal
1433     nvenc
1434     openal
1435     opencl
1436     opengl
1437     openssl
1438     sdl
1439     securetransport
1440     x11grab
1441     xlib
1442     zlib
1443 "
1444
1445 DOCUMENT_LIST="
1446     doc
1447     htmlpages
1448     manpages
1449     podpages
1450     txtpages
1451 "
1452
1453 FEATURE_LIST="
1454     ftrapv
1455     gray
1456     hardcoded_tables
1457     runtime_cpudetect
1458     safe_bitstream_reader
1459     shared
1460     small
1461     static
1462     swscale_alpha
1463 "
1464
1465 HWACCEL_LIST="
1466     d3d11va
1467     dxva2
1468     vaapi
1469     vda
1470     vdpau
1471     xvmc
1472 "
1473
1474 LIBRARY_LIST="
1475     avcodec
1476     avdevice
1477     avfilter
1478     avformat
1479     avresample
1480     avutil
1481     postproc
1482     swresample
1483     swscale
1484 "
1485
1486 LICENSE_LIST="
1487     gpl
1488     nonfree
1489     version3
1490 "
1491
1492 PROGRAM_LIST="
1493     ffplay
1494     ffprobe
1495     ffserver
1496     ffmpeg
1497 "
1498
1499 SUBSYSTEM_LIST="
1500     dct
1501     dwt
1502     error_resilience
1503     faan
1504     fast_unaligned
1505     fft
1506     lsp
1507     lzo
1508     mdct
1509     pixelutils
1510     network
1511     rdft
1512 "
1513
1514 CONFIG_LIST="
1515     $COMPONENT_LIST
1516     $DOCUMENT_LIST
1517     $EXAMPLE_LIST
1518     $EXTERNAL_LIBRARY_LIST
1519     $FEATURE_LIST
1520     $HWACCEL_LIST
1521     $LICENSE_LIST
1522     $LIBRARY_LIST
1523     $PROGRAM_LIST
1524     $SUBSYSTEM_LIST
1525     fontconfig
1526     incompatible_libav_abi
1527     memalign_hack
1528     memory_poisoning
1529     neon_clobber_test
1530     pic
1531     pod2man
1532     raise_major
1533     thumb
1534     valgrind_backtrace
1535     xmm_clobber_test
1536 "
1537
1538 THREADS_LIST="
1539     pthreads
1540     os2threads
1541     w32threads
1542 "
1543
1544 ATOMICS_LIST="
1545     atomics_gcc
1546     atomics_suncc
1547     atomics_win32
1548 "
1549
1550 ARCH_LIST="
1551     aarch64
1552     alpha
1553     arm
1554     avr32
1555     avr32_ap
1556     avr32_uc
1557     bfin
1558     ia64
1559     m68k
1560     mips
1561     mips64
1562     parisc
1563     ppc
1564     ppc64
1565     s390
1566     sh4
1567     sparc
1568     sparc64
1569     tilegx
1570     tilepro
1571     tomi
1572     x86
1573     x86_32
1574     x86_64
1575 "
1576
1577 ARCH_EXT_LIST_ARM="
1578     armv5te
1579     armv6
1580     armv6t2
1581     armv8
1582     neon
1583     vfp
1584     vfpv3
1585     setend
1586 "
1587
1588 ARCH_EXT_LIST_MIPS="
1589     mipsfpu
1590     mips32r2
1591     mips32r5
1592     mips64r6
1593     mipsdspr1
1594     mipsdspr2
1595     msa
1596 "
1597
1598 ARCH_EXT_LIST_LOONGSON="
1599     loongson2
1600     loongson3
1601     mmi
1602 "
1603
1604 ARCH_EXT_LIST_X86_SIMD="
1605     amd3dnow
1606     amd3dnowext
1607     avx
1608     avx2
1609     fma3
1610     fma4
1611     mmx
1612     mmxext
1613     sse
1614     sse2
1615     sse3
1616     sse4
1617     sse42
1618     ssse3
1619     xop
1620 "
1621
1622 ARCH_EXT_LIST_PPC="
1623     altivec
1624     dcbzl
1625     ldbrx
1626     power8
1627     ppc4xx
1628     vsx
1629 "
1630
1631 ARCH_EXT_LIST_X86="
1632     $ARCH_EXT_LIST_X86_SIMD
1633     cpunop
1634     i686
1635 "
1636
1637 ARCH_EXT_LIST="
1638     $ARCH_EXT_LIST_ARM
1639     $ARCH_EXT_LIST_PPC
1640     $ARCH_EXT_LIST_X86
1641     $ARCH_EXT_LIST_MIPS
1642     $ARCH_EXT_LIST_LOONGSON
1643 "
1644
1645 ARCH_FEATURES="
1646     aligned_stack
1647     fast_64bit
1648     fast_clz
1649     fast_cmov
1650     local_aligned_8
1651     local_aligned_16
1652     local_aligned_32
1653     simd_align_16
1654 "
1655
1656 BUILTIN_LIST="
1657     atomic_cas_ptr
1658     atomic_compare_exchange
1659     machine_rw_barrier
1660     MemoryBarrier
1661     mm_empty
1662     rdtsc
1663     sarestart
1664     sync_val_compare_and_swap
1665 "
1666 HAVE_LIST_CMDLINE="
1667     inline_asm
1668     symver
1669     yasm
1670 "
1671
1672 HAVE_LIST_PUB="
1673     bigendian
1674     fast_unaligned
1675     incompatible_libav_abi
1676 "
1677
1678 HEADERS_LIST="
1679     alsa_asoundlib_h
1680     altivec_h
1681     arpa_inet_h
1682     asm_types_h
1683     cdio_paranoia_h
1684     cdio_paranoia_paranoia_h
1685     dev_bktr_ioctl_bt848_h
1686     dev_bktr_ioctl_meteor_h
1687     dev_ic_bt8xx_h
1688     dev_video_bktr_ioctl_bt848_h
1689     dev_video_meteor_ioctl_meteor_h
1690     direct_h
1691     dlfcn_h
1692     d3d11_h
1693     dxva_h
1694     ES2_gl_h
1695     gsm_h
1696     io_h
1697     mach_mach_time_h
1698     machine_ioctl_bt848_h
1699     machine_ioctl_meteor_h
1700     malloc_h
1701     openjpeg_1_5_openjpeg_h
1702     OpenGL_gl3_h
1703     poll_h
1704     sndio_h
1705     soundcard_h
1706     sys_mman_h
1707     sys_param_h
1708     sys_resource_h
1709     sys_select_h
1710     sys_soundcard_h
1711     sys_time_h
1712     sys_un_h
1713     sys_videoio_h
1714     termios_h
1715     udplite_h
1716     unistd_h
1717     valgrind_valgrind_h
1718     windows_h
1719     winsock2_h
1720 "
1721
1722 INTRINSICS_LIST="
1723     intrinsics_neon
1724 "
1725
1726 MATH_FUNCS="
1727     atanf
1728     atan2f
1729     cbrt
1730     cbrtf
1731     cosf
1732     exp2
1733     exp2f
1734     expf
1735     isinf
1736     isnan
1737     ldexpf
1738     llrint
1739     llrintf
1740     log2
1741     log2f
1742     log10f
1743     lrint
1744     lrintf
1745     powf
1746     rint
1747     round
1748     roundf
1749     sinf
1750     trunc
1751     truncf
1752 "
1753
1754 SYSTEM_FUNCS="
1755     access
1756     aligned_malloc
1757     clock_gettime
1758     closesocket
1759     CommandLineToArgvW
1760     CoTaskMemFree
1761     CryptGenRandom
1762     dlopen
1763     fcntl
1764     flt_lim
1765     fork
1766     getaddrinfo
1767     gethrtime
1768     getopt
1769     GetProcessAffinityMask
1770     GetProcessMemoryInfo
1771     GetProcessTimes
1772     getrusage
1773     getservbyport
1774     GetSystemTimeAsFileTime
1775     gettimeofday
1776     glob
1777     glXGetProcAddress
1778     gmtime_r
1779     inet_aton
1780     isatty
1781     jack_port_get_latency_range
1782     kbhit
1783     localtime_r
1784     lzo1x_999_compress
1785     mach_absolute_time
1786     MapViewOfFile
1787     memalign
1788     mkstemp
1789     mmap
1790     mprotect
1791     nanosleep
1792     PeekNamedPipe
1793     posix_memalign
1794     pthread_cancel
1795     sched_getaffinity
1796     SetConsoleTextAttribute
1797     SetConsoleCtrlHandler
1798     setmode
1799     setrlimit
1800     Sleep
1801     strerror_r
1802     sysconf
1803     sysctl
1804     usleep
1805     VirtualAlloc
1806     wglGetProcAddress
1807 "
1808
1809 TOOLCHAIN_FEATURES="
1810     as_dn_directive
1811     as_func
1812     as_object_arch
1813     asm_mod_q
1814     attribute_may_alias
1815     attribute_packed
1816     ebp_available
1817     ebx_available
1818     gnu_as
1819     gnu_windres
1820     ibm_asm
1821     inline_asm_labels
1822     inline_asm_nonlocal_labels
1823     inline_asm_direct_symbol_refs
1824     pragma_deprecated
1825     rsync_contimeout
1826     symver_asm_label
1827     symver_gnu_asm
1828     vfp_args
1829     xform_asm
1830     xmm_clobbers
1831 "
1832
1833 TYPES_LIST="
1834     CONDITION_VARIABLE_Ptr
1835     socklen_t
1836     struct_addrinfo
1837     struct_dcadec_exss_info_matrix_encoding
1838     struct_group_source_req
1839     struct_ip_mreq_source
1840     struct_ipv6_mreq
1841     struct_pollfd
1842     struct_rusage_ru_maxrss
1843     struct_sctp_event_subscribe
1844     struct_sockaddr_in6
1845     struct_sockaddr_sa_len
1846     struct_sockaddr_storage
1847     struct_stat_st_mtim_tv_nsec
1848     struct_v4l2_frmivalenum_discrete
1849 "
1850
1851 HAVE_LIST="
1852     $ARCH_EXT_LIST
1853     $(add_suffix _external $ARCH_EXT_LIST)
1854     $(add_suffix _inline   $ARCH_EXT_LIST)
1855     $ARCH_FEATURES
1856     $ATOMICS_LIST
1857     $BUILTIN_LIST
1858     $HAVE_LIST_CMDLINE
1859     $HAVE_LIST_PUB
1860     $HEADERS_LIST
1861     $INTRINSICS_LIST
1862     $MATH_FUNCS
1863     $SYSTEM_FUNCS
1864     $THREADS_LIST
1865     $TOOLCHAIN_FEATURES
1866     $TYPES_LIST
1867     atomics_native
1868     dos_paths
1869     dxva2api_cobj
1870     dxva2_lib
1871     libc_msvcrt
1872     libdc1394_1
1873     libdc1394_2
1874     makeinfo
1875     makeinfo_html
1876     perl
1877     pod2man
1878     sdl
1879     section_data_rel_ro
1880     texi2html
1881     threads
1882     vaapi_x11
1883     vdpau_x11
1884     xlib
1885 "
1886
1887 # options emitted with CONFIG_ prefix but not available on the command line
1888 CONFIG_EXTRA="
1889     aandcttables
1890     ac3dsp
1891     audio_frame_queue
1892     audiodsp
1893     blockdsp
1894     bswapdsp
1895     cabac
1896     dvprofile
1897     exif
1898     faandct
1899     faanidct
1900     fdctdsp
1901     fmtconvert
1902     frame_thread_encoder
1903     gcrypt
1904     gmp
1905     golomb
1906     gplv3
1907     h263dsp
1908     h264chroma
1909     h264dsp
1910     h264pred
1911     h264qpel
1912     hpeldsp
1913     huffman
1914     huffyuvdsp
1915     huffyuvencdsp
1916     idctdsp
1917     iirfilter
1918     imdct15
1919     intrax8
1920     jpegtables
1921     lgplv3
1922     llauddsp
1923     llviddsp
1924     lpc
1925     me_cmp
1926     mpeg_er
1927     mpegaudio
1928     mpegaudiodsp
1929     mpegvideo
1930     mpegvideoenc
1931     pixblockdsp
1932     qpeldsp
1933     qsv
1934     qsvdec
1935     qsvenc
1936     rangecoder
1937     riffdec
1938     riffenc
1939     rtpdec
1940     rtpenc_chain
1941     sinewin
1942     snappy
1943     startcode
1944     texturedsp
1945     texturedspenc
1946     tpeldsp
1947     videodsp
1948     vp3dsp
1949     wma_freqs
1950 "
1951
1952 CMDLINE_SELECT="
1953     $ARCH_EXT_LIST
1954     $CONFIG_LIST
1955     $HAVE_LIST_CMDLINE
1956     $THREADS_LIST
1957     asm
1958     cross_compile
1959     debug
1960     extra_warnings
1961     logging
1962     lto
1963     optimizations
1964     rpath
1965     stripping
1966 "
1967
1968 PATHS_LIST="
1969     bindir
1970     datadir
1971     docdir
1972     incdir
1973     libdir
1974     mandir
1975     pkgconfigdir
1976     prefix
1977     shlibdir
1978 "
1979
1980 CMDLINE_SET="
1981     $PATHS_LIST
1982     ar
1983     arch
1984     as
1985     assert_level
1986     build_suffix
1987     cc
1988     cpu
1989     cross_prefix
1990     cxx
1991     dep_cc
1992     doxygen
1993     env
1994     extra_version
1995     gas
1996     host_cc
1997     host_cflags
1998     host_ld
1999     host_ldflags
2000     host_libs
2001     host_os
2002     install
2003     ld
2004     logfile
2005     malloc_prefix
2006     nm
2007     optflags
2008     pkg_config
2009     pkg_config_flags
2010     progs_suffix
2011     random_seed
2012     ranlib
2013     samples
2014     strip
2015     sws_max_filter_size
2016     sysinclude
2017     sysroot
2018     target_exec
2019     target_os
2020     target_path
2021     target_samples
2022     tempprefix
2023     toolchain
2024     valgrind
2025     yasmexe
2026 "
2027
2028 CMDLINE_APPEND="
2029     extra_cflags
2030     extra_cxxflags
2031     host_cppflags
2032 "
2033
2034 # code dependency declarations
2035
2036 # architecture extensions
2037
2038 armv5te_deps="arm"
2039 armv6_deps="arm"
2040 armv6t2_deps="arm"
2041 armv8_deps="aarch64"
2042 neon_deps_any="aarch64 arm"
2043 intrinsics_neon_deps="neon"
2044 vfp_deps_any="aarch64 arm"
2045 vfpv3_deps="vfp"
2046 setend_deps="arm"
2047
2048 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2049
2050 mipsfpu_deps="mips"
2051 mipsdspr1_deps="mips"
2052 mipsdspr2_deps="mips"
2053 mips32r2_deps="mips"
2054 mips32r5_deps="mips"
2055 mips64r6_deps="mips"
2056 msa_deps="mips"
2057 mmi_deps="mips"
2058
2059 altivec_deps="ppc"
2060 dcbzl_deps="ppc"
2061 ldbrx_deps="ppc"
2062 ppc4xx_deps="ppc"
2063 vsx_deps="altivec"
2064 power8_deps="vsx"
2065
2066 cpunop_deps="i686"
2067 x86_64_select="i686"
2068 x86_64_suggest="fast_cmov"
2069
2070 amd3dnow_deps="mmx"
2071 amd3dnowext_deps="amd3dnow"
2072 i686_deps="x86"
2073 mmx_deps="x86"
2074 mmxext_deps="mmx"
2075 sse_deps="mmxext"
2076 sse2_deps="sse"
2077 sse3_deps="sse2"
2078 ssse3_deps="sse3"
2079 sse4_deps="ssse3"
2080 sse42_deps="sse4"
2081 avx_deps="sse42"
2082 xop_deps="avx"
2083 fma3_deps="avx"
2084 fma4_deps="avx"
2085 avx2_deps="avx"
2086
2087 mmx_external_deps="yasm"
2088 mmx_inline_deps="inline_asm"
2089 mmx_suggest="mmx_external mmx_inline"
2090
2091 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2092     eval dep=\$${ext}_deps
2093     eval ${ext}_external_deps='"${dep}_external"'
2094     eval ${ext}_inline_deps='"${dep}_inline"'
2095     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2096 done
2097
2098 aligned_stack_if_any="aarch64 ppc x86"
2099 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2100 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2101 fast_unaligned_if_any="aarch64 ppc x86"
2102 simd_align_16_if_any="altivec neon sse"
2103
2104 # system capabilities
2105 symver_if_any="symver_asm_label symver_gnu_asm"
2106 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2107
2108 # threading support
2109 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2110 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2111 atomics_win32_if="MemoryBarrier"
2112 atomics_native_if_any="$ATOMICS_LIST"
2113 w32threads_deps="atomics_native"
2114 threads_if_any="$THREADS_LIST"
2115
2116 # subsystems
2117 dct_select="rdft"
2118 error_resilience_select="me_cmp"
2119 faandct_deps="faan fdctdsp"
2120 faanidct_deps="faan idctdsp"
2121 frame_thread_encoder_deps="encoders threads"
2122 intrax8_select="error_resilience"
2123 mdct_select="fft"
2124 rdft_select="fft"
2125 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2126 mpeg_er_select="error_resilience"
2127 mpegaudio_select="mpegaudiodsp"
2128 mpegaudiodsp_select="dct"
2129 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2130 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2131 qsvdec_select="qsv"
2132 qsvenc_select="qsv"
2133
2134 # decoders / encoders
2135 aac_decoder_select="imdct15 mdct sinewin"
2136 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2137 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2138 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2139 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2140 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2141 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2142 aic_decoder_select="golomb idctdsp"
2143 alac_encoder_select="lpc"
2144 als_decoder_select="bswapdsp"
2145 amrnb_decoder_select="lsp"
2146 amrwb_decoder_select="lsp"
2147 amv_decoder_select="sp5x_decoder exif"
2148 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2149 ape_decoder_select="bswapdsp llauddsp"
2150 apng_decoder_select="zlib"
2151 apng_encoder_select="huffyuvencdsp zlib"
2152 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2153 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2154 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2155 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2156 atrac1_decoder_select="mdct sinewin"
2157 atrac3_decoder_select="mdct"
2158 atrac3p_decoder_select="mdct sinewin"
2159 avrn_decoder_select="exif jpegtables"
2160 bink_decoder_select="blockdsp hpeldsp"
2161 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2162 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2163 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2164 cllc_decoder_select="bswapdsp"
2165 comfortnoise_encoder_select="lpc"
2166 cook_decoder_select="audiodsp mdct sinewin"
2167 cscd_decoder_select="lzo"
2168 cscd_decoder_suggest="zlib"
2169 dca_decoder_select="fmtconvert mdct"
2170 dds_decoder_select="texturedsp"
2171 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2172 dnxhd_decoder_select="blockdsp idctdsp"
2173 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2174 dvvideo_decoder_select="dvprofile idctdsp"
2175 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2176 dxa_decoder_select="zlib"
2177 eac3_decoder_select="ac3_decoder"
2178 eac3_encoder_select="ac3_encoder"
2179 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2180 eatgq_decoder_select="aandcttables"
2181 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2182 exr_decoder_select="zlib"
2183 ffv1_decoder_select="golomb rangecoder"
2184 ffv1_encoder_select="rangecoder"
2185 ffvhuff_decoder_select="huffyuv_decoder"
2186 ffvhuff_encoder_select="huffyuv_encoder"
2187 fic_decoder_select="golomb"
2188 flac_decoder_select="golomb"
2189 flac_encoder_select="bswapdsp golomb lpc"
2190 flashsv_decoder_select="zlib"
2191 flashsv_encoder_select="zlib"
2192 flashsv2_encoder_select="zlib"
2193 flashsv2_decoder_select="zlib"
2194 flv_decoder_select="h263_decoder"
2195 flv_encoder_select="h263_encoder"
2196 fourxm_decoder_select="blockdsp bswapdsp"
2197 fraps_decoder_select="bswapdsp huffman"
2198 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2199 g729_decoder_select="audiodsp"
2200 h261_decoder_select="mpeg_er mpegvideo"
2201 h261_encoder_select="aandcttables mpegvideoenc"
2202 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2203 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2204 h263i_decoder_select="h263_decoder"
2205 h263p_decoder_select="h263_decoder"
2206 h263p_encoder_select="h263_encoder"
2207 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2208 h264_decoder_suggest="error_resilience"
2209 h264_qsv_decoder_deps="libmfx"
2210 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2211 h264_qsv_encoder_deps="libmfx"
2212 h264_qsv_encoder_select="qsvenc"
2213 hap_decoder_select="snappy texturedsp"
2214 hap_encoder_deps="libsnappy"
2215 hap_encoder_select="texturedspenc"
2216 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2217 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2218 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2219 iac_decoder_select="imc_decoder"
2220 imc_decoder_select="bswapdsp fft mdct sinewin"
2221 indeo3_decoder_select="hpeldsp"
2222 interplay_video_decoder_select="hpeldsp"
2223 jpegls_decoder_select="golomb mjpeg_decoder"
2224 jpegls_encoder_select="golomb"
2225 jv_decoder_select="blockdsp"
2226 lagarith_decoder_select="huffyuvdsp"
2227 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2228 loco_decoder_select="golomb"
2229 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2230 metasound_decoder_select="lsp mdct sinewin"
2231 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2232 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2233 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2234 mjpegb_decoder_select="mjpeg_decoder"
2235 mlp_decoder_select="mlp_parser"
2236 motionpixels_decoder_select="bswapdsp"
2237 mp1_decoder_select="mpegaudio"
2238 mp1float_decoder_select="mpegaudio"
2239 mp2_decoder_select="mpegaudio"
2240 mp2float_decoder_select="mpegaudio"
2241 mp3_decoder_select="mpegaudio"
2242 mp3adu_decoder_select="mpegaudio"
2243 mp3adufloat_decoder_select="mpegaudio"
2244 mp3float_decoder_select="mpegaudio"
2245 mp3on4_decoder_select="mpegaudio"
2246 mp3on4float_decoder_select="mpegaudio"
2247 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2248 mpc8_decoder_select="mpegaudiodsp"
2249 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2250 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2251 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2252 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2253 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2254 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2255 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2256 mpeg2_qsv_encoder_deps="libmfx"
2257 mpeg2_qsv_encoder_select="qsvenc"
2258 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2259 mpeg4_encoder_select="h263_encoder"
2260 msmpeg4v1_decoder_select="h263_decoder"
2261 msmpeg4v2_decoder_select="h263_decoder"
2262 msmpeg4v2_encoder_select="h263_encoder"
2263 msmpeg4v3_decoder_select="h263_decoder"
2264 msmpeg4v3_encoder_select="h263_encoder"
2265 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2266 mxpeg_decoder_select="mjpeg_decoder"
2267 nellymoser_decoder_select="mdct sinewin"
2268 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2269 nuv_decoder_select="idctdsp lzo"
2270 on2avc_decoder_select="mdct"
2271 opus_decoder_deps="swresample"
2272 opus_decoder_select="imdct15"
2273 png_decoder_select="zlib"
2274 png_encoder_select="huffyuvencdsp zlib"
2275 prores_decoder_select="blockdsp idctdsp"
2276 prores_encoder_select="fdctdsp"
2277 qcelp_decoder_select="lsp"
2278 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2279 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2280 ra_144_decoder_select="audiodsp"
2281 ralf_decoder_select="golomb"
2282 rawvideo_decoder_select="bswapdsp"
2283 rtjpeg_decoder_select="me_cmp"
2284 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2285 rv10_encoder_select="h263_encoder"
2286 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2287 rv20_encoder_select="h263_encoder"
2288 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2289 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2290 shorten_decoder_select="golomb"
2291 sipr_decoder_select="lsp"
2292 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2293 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2294 sonic_decoder_select="golomb rangecoder"
2295 sonic_encoder_select="golomb rangecoder"
2296 sonic_ls_encoder_select="golomb rangecoder"
2297 sp5x_decoder_select="mjpeg_decoder"
2298 svq1_decoder_select="hpeldsp"
2299 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2300 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2301 svq3_decoder_suggest="zlib"
2302 tak_decoder_select="audiodsp"
2303 tdsc_decoder_select="zlib mjpeg_decoder"
2304 theora_decoder_select="vp3_decoder"
2305 thp_decoder_select="mjpeg_decoder"
2306 tiff_decoder_suggest="zlib lzma"
2307 tiff_encoder_suggest="zlib"
2308 truehd_decoder_select="mlp_parser"
2309 truemotion2_decoder_select="bswapdsp"
2310 truespeech_decoder_select="bswapdsp"
2311 tscc_decoder_select="zlib"
2312 twinvq_decoder_select="mdct lsp sinewin"
2313 txd_decoder_select="texturedsp"
2314 utvideo_decoder_select="bswapdsp"
2315 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2316 vble_decoder_select="huffyuvdsp"
2317 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2318 vc1image_decoder_select="vc1_decoder"
2319 vorbis_decoder_select="mdct"
2320 vorbis_encoder_select="mdct"
2321 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2322 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2323 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2324 vp6a_decoder_select="vp6_decoder"
2325 vp6f_decoder_select="vp6_decoder"
2326 vp7_decoder_select="h264pred videodsp"
2327 vp8_decoder_select="h264pred videodsp"
2328 vp9_decoder_select="videodsp vp9_parser"
2329 webp_decoder_select="vp8_decoder"
2330 wmalossless_decoder_select="llauddsp"
2331 wmapro_decoder_select="mdct sinewin wma_freqs"
2332 wmav1_decoder_select="mdct sinewin wma_freqs"
2333 wmav1_encoder_select="mdct sinewin wma_freqs"
2334 wmav2_decoder_select="mdct sinewin wma_freqs"
2335 wmav2_encoder_select="mdct sinewin wma_freqs"
2336 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2337 wmv1_decoder_select="h263_decoder"
2338 wmv1_encoder_select="h263_encoder"
2339 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2340 wmv2_encoder_select="h263_encoder"
2341 wmv3_decoder_select="vc1_decoder"
2342 wmv3image_decoder_select="wmv3_decoder"
2343 zerocodec_decoder_select="zlib"
2344 zlib_decoder_select="zlib"
2345 zlib_encoder_select="zlib"
2346 zmbv_decoder_select="zlib"
2347 zmbv_encoder_select="zlib"
2348
2349 # hardware accelerators
2350 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2351 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2352 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2353 vaapi_deps="va_va_h"
2354 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2355 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2356 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2357 xvmc_deps="X11_extensions_XvMClib_h"
2358
2359 h263_vaapi_hwaccel_deps="vaapi"
2360 h263_vaapi_hwaccel_select="h263_decoder"
2361 h263_vdpau_hwaccel_deps="vdpau"
2362 h263_vdpau_hwaccel_select="h263_decoder"
2363 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2364 h264_d3d11va_hwaccel_deps="d3d11va"
2365 h264_d3d11va_hwaccel_select="h264_decoder"
2366 h264_dxva2_hwaccel_deps="dxva2"
2367 h264_dxva2_hwaccel_select="h264_decoder"
2368 h264_mmal_decoder_deps="mmal"
2369 h264_mmal_hwaccel_deps="mmal"
2370 h264_mmal_decoder_select="h264_decoder"
2371 h264_mmal_encoder_deps="mmal"
2372 h264_qsv_hwaccel_deps="libmfx"
2373 h264_vaapi_hwaccel_deps="vaapi"
2374 h264_vaapi_hwaccel_select="h264_decoder"
2375 h264_vda_decoder_deps="vda"
2376 h264_vda_decoder_select="h264_decoder"
2377 h264_vda_hwaccel_deps="vda"
2378 h264_vda_hwaccel_select="h264_decoder"
2379 h264_vda_old_hwaccel_deps="vda"
2380 h264_vda_old_hwaccel_select="h264_decoder"
2381 h264_vdpau_decoder_deps="vdpau"
2382 h264_vdpau_decoder_select="h264_decoder"
2383 h264_vdpau_hwaccel_deps="vdpau"
2384 h264_vdpau_hwaccel_select="h264_decoder"
2385 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2386 hevc_d3d11va_hwaccel_select="hevc_decoder"
2387 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2388 hevc_dxva2_hwaccel_select="hevc_decoder"
2389 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2390 hevc_vdpau_hwaccel_select="hevc_decoder"
2391 mpeg_vdpau_decoder_deps="vdpau"
2392 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2393 mpeg_xvmc_hwaccel_deps="xvmc"
2394 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2395 mpeg1_vdpau_decoder_deps="vdpau"
2396 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2397 mpeg1_vdpau_hwaccel_deps="vdpau"
2398 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2399 mpeg1_xvmc_hwaccel_deps="xvmc"
2400 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2401 mpeg2_crystalhd_decoder_select="crystalhd"
2402 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2403 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2404 mpeg2_dxva2_hwaccel_deps="dxva2"
2405 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2406 mpeg2_vaapi_hwaccel_deps="vaapi"
2407 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2408 mpeg2_vdpau_hwaccel_deps="vdpau"
2409 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2410 mpeg2_xvmc_hwaccel_deps="xvmc"
2411 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2412 mpeg4_crystalhd_decoder_select="crystalhd"
2413 mpeg4_vaapi_hwaccel_deps="vaapi"
2414 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2415 mpeg4_vdpau_decoder_deps="vdpau"
2416 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2417 mpeg4_vdpau_hwaccel_deps="vdpau"
2418 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2419 msmpeg4_crystalhd_decoder_select="crystalhd"
2420 vc1_crystalhd_decoder_select="crystalhd"
2421 vc1_d3d11va_hwaccel_deps="d3d11va"
2422 vc1_d3d11va_hwaccel_select="vc1_decoder"
2423 vc1_dxva2_hwaccel_deps="dxva2"
2424 vc1_dxva2_hwaccel_select="vc1_decoder"
2425 vc1_vaapi_hwaccel_deps="vaapi"
2426 vc1_vaapi_hwaccel_select="vc1_decoder"
2427 vc1_vdpau_decoder_deps="vdpau"
2428 vc1_vdpau_decoder_select="vc1_decoder"
2429 vc1_vdpau_hwaccel_deps="vdpau"
2430 vc1_vdpau_hwaccel_select="vc1_decoder"
2431 wmv3_crystalhd_decoder_select="crystalhd"
2432 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2433 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2434 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2435 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2436 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2437
2438 # parsers
2439 h264_parser_select="h264_decoder"
2440 hevc_parser_select="hevc_decoder"
2441 mpegvideo_parser_select="mpegvideo"
2442 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2443 vc1_parser_select="mpegvideo startcode vc1_decoder"
2444
2445 # bitstream_filters
2446 mjpeg2jpeg_bsf_select="jpegtables"
2447
2448 # external libraries
2449 libaacplus_encoder_deps="libaacplus"
2450 libcelt_decoder_deps="libcelt"
2451 libdcadec_decoder_deps="libdcadec"
2452 libfaac_encoder_deps="libfaac"
2453 libfaac_encoder_select="audio_frame_queue"
2454 libfdk_aac_decoder_deps="libfdk_aac"
2455 libfdk_aac_encoder_deps="libfdk_aac"
2456 libfdk_aac_encoder_select="audio_frame_queue"
2457 libgme_demuxer_deps="libgme"
2458 libgsm_decoder_deps="libgsm"
2459 libgsm_encoder_deps="libgsm"
2460 libgsm_ms_decoder_deps="libgsm"
2461 libgsm_ms_encoder_deps="libgsm"
2462 libilbc_decoder_deps="libilbc"
2463 libilbc_encoder_deps="libilbc"
2464 libmodplug_demuxer_deps="libmodplug"
2465 libmp3lame_encoder_deps="libmp3lame"
2466 libmp3lame_encoder_select="audio_frame_queue"
2467 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2468 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2469 libopencore_amrnb_encoder_select="audio_frame_queue"
2470 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2471 libopenh264_encoder_deps="libopenh264"
2472 libopenjpeg_decoder_deps="libopenjpeg"
2473 libopenjpeg_encoder_deps="libopenjpeg"
2474 libopus_decoder_deps="libopus"
2475 libopus_encoder_deps="libopus"
2476 libopus_encoder_select="audio_frame_queue"
2477 libquvi_demuxer_deps="libquvi"
2478 libschroedinger_decoder_deps="libschroedinger"
2479 libschroedinger_encoder_deps="libschroedinger"
2480 libshine_encoder_deps="libshine"
2481 libshine_encoder_select="audio_frame_queue"
2482 libspeex_decoder_deps="libspeex"
2483 libspeex_encoder_deps="libspeex"
2484 libspeex_encoder_select="audio_frame_queue"
2485 libstagefright_h264_decoder_deps="libstagefright_h264"
2486 libtheora_encoder_deps="libtheora"
2487 libtwolame_encoder_deps="libtwolame"
2488 libvo_aacenc_encoder_deps="libvo_aacenc"
2489 libvo_aacenc_encoder_select="audio_frame_queue"
2490 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2491 libvorbis_decoder_deps="libvorbis"
2492 libvorbis_encoder_deps="libvorbis"
2493 libvorbis_encoder_select="audio_frame_queue"
2494 libvpx_vp8_decoder_deps="libvpx"
2495 libvpx_vp8_encoder_deps="libvpx"
2496 libvpx_vp9_decoder_deps="libvpx"
2497 libvpx_vp9_encoder_deps="libvpx"
2498 libwavpack_encoder_deps="libwavpack"
2499 libwebp_encoder_deps="libwebp"
2500 libwebp_anim_encoder_deps="libwebp"
2501 libx264_encoder_deps="libx264"
2502 libx264rgb_encoder_deps="libx264"
2503 libx264rgb_encoder_select="libx264_encoder"
2504 libx265_encoder_deps="libx265"
2505 libxavs_encoder_deps="libxavs"
2506 libxvid_encoder_deps="libxvid"
2507 libutvideo_decoder_deps="libutvideo"
2508 libutvideo_encoder_deps="libutvideo"
2509 libzvbi_teletext_decoder_deps="libzvbi"
2510 nvenc_encoder_deps="nvenc"
2511 nvenc_h264_encoder_deps="nvenc"
2512 nvenc_hevc_encoder_deps="nvenc"
2513
2514 # demuxers / muxers
2515 ac3_demuxer_select="ac3_parser"
2516 asf_demuxer_select="riffdec"
2517 asf_o_demuxer_select="riffdec"
2518 asf_muxer_select="riffenc"
2519 asf_stream_muxer_select="asf_muxer"
2520 avi_demuxer_select="riffdec exif"
2521 avi_muxer_select="riffenc"
2522 avisynth_demuxer_deps="avisynth"
2523 avisynth_demuxer_select="riffdec"
2524 caf_demuxer_select="riffdec"
2525 dash_muxer_select="mp4_muxer"
2526 dirac_demuxer_select="dirac_parser"
2527 dts_demuxer_select="dca_parser"
2528 dtshd_demuxer_select="dca_parser"
2529 dv_demuxer_select="dvprofile"
2530 dv_muxer_select="dvprofile"
2531 dxa_demuxer_select="riffdec"
2532 eac3_demuxer_select="ac3_parser"
2533 f4v_muxer_select="mov_muxer"
2534 flac_demuxer_select="flac_parser"
2535 hds_muxer_select="flv_muxer"
2536 hls_muxer_select="mpegts_muxer"
2537 image2_alias_pix_demuxer_select="image2_demuxer"
2538 image2_brender_pix_demuxer_select="image2_demuxer"
2539 ipod_muxer_select="mov_muxer"
2540 ismv_muxer_select="mov_muxer"
2541 libnut_demuxer_deps="libnut"
2542 libnut_muxer_deps="libnut"
2543 matroska_audio_muxer_select="matroska_muxer"
2544 matroska_demuxer_select="riffdec"
2545 matroska_demuxer_suggest="bzlib lzo zlib"
2546 matroska_muxer_select="riffenc"
2547 mmf_muxer_select="riffenc"
2548 mov_demuxer_select="riffdec"
2549 mov_demuxer_suggest="zlib"
2550 mov_muxer_select="riffenc rtpenc_chain"
2551 mp3_demuxer_select="mpegaudio_parser"
2552 mp4_muxer_select="mov_muxer"
2553 mpegts_muxer_select="adts_muxer latm_muxer"
2554 mpegtsraw_demuxer_select="mpegts_demuxer"
2555 mxf_d10_muxer_select="mxf_muxer"
2556 mxf_opatom_muxer_select="mxf_muxer"
2557 nut_muxer_select="riffenc"
2558 nuv_demuxer_select="riffdec"
2559 oga_muxer_select="ogg_muxer"
2560 ogg_demuxer_select="golomb"
2561 opus_muxer_select="ogg_muxer"
2562 psp_muxer_select="mov_muxer"
2563 rtp_demuxer_select="sdp_demuxer"
2564 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2565 rtsp_demuxer_select="http_protocol rtpdec"
2566 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2567 sap_demuxer_select="sdp_demuxer"
2568 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2569 sdp_demuxer_select="rtpdec"
2570 smoothstreaming_muxer_select="ismv_muxer"
2571 spdif_muxer_select="aac_parser"
2572 spx_muxer_select="ogg_muxer"
2573 tak_demuxer_select="tak_parser"
2574 tg2_muxer_select="mov_muxer"
2575 tgp_muxer_select="mov_muxer"
2576 vobsub_demuxer_select="mpegps_demuxer"
2577 w64_demuxer_select="wav_demuxer"
2578 w64_muxer_select="wav_muxer"
2579 wav_demuxer_select="riffdec"
2580 wav_muxer_select="riffenc"
2581 webm_muxer_select="riffenc"
2582 wtv_demuxer_select="riffdec"
2583 wtv_muxer_select="riffenc"
2584 xmv_demuxer_select="riffdec"
2585 xwma_demuxer_select="riffdec"
2586
2587 # indevs / outdevs
2588 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2589 alsa_outdev_deps="alsa_asoundlib_h"
2590 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2591 avfoundation_indev_select="avfoundation"
2592 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2593 caca_outdev_deps="libcaca"
2594 decklink_outdev_deps="decklink pthreads"
2595 decklink_outdev_extralibs="-lstdc++"
2596 decklink_indev_deps="decklink pthreads"
2597 decklink_indev_extralibs="-lstdc++"
2598 dshow_indev_deps="IBaseFilter"
2599 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2600 dv1394_indev_deps="dv1394"
2601 dv1394_indev_select="dv_demuxer"
2602 fbdev_indev_deps="linux_fb_h"
2603 fbdev_outdev_deps="linux_fb_h"
2604 gdigrab_indev_deps="CreateDIBSection"
2605 gdigrab_indev_extralibs="-lgdi32"
2606 gdigrab_indev_select="bmp_decoder"
2607 iec61883_indev_deps="libiec61883"
2608 jack_indev_deps="jack_jack_h sem_timedwait"
2609 lavfi_indev_deps="avfilter"
2610 libcdio_indev_deps="libcdio"
2611 libdc1394_indev_deps="libdc1394"
2612 libv4l2_indev_deps="libv4l2"
2613 openal_indev_deps="openal"
2614 opengl_outdev_deps="opengl"
2615 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2616 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2617 pulse_indev_deps="libpulse"
2618 pulse_outdev_deps="libpulse"
2619 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2620 qtkit_indev_select="qtkit"
2621 sdl_outdev_deps="sdl"
2622 sndio_indev_deps="sndio_h"
2623 sndio_outdev_deps="sndio_h"
2624 v4l_indev_deps="linux_videodev_h"
2625 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2626 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2627 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2628 vfwcap_indev_extralibs="-lavicap32"
2629 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2630 xv_outdev_extralibs="-lXv -lX11 -lXext"
2631 x11grab_indev_deps="x11grab"
2632 x11grab_xcb_indev_deps="libxcb"
2633
2634 # protocols
2635 bluray_protocol_deps="libbluray"
2636 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2637 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2638 ffrtmpcrypt_protocol_select="tcp_protocol"
2639 ffrtmphttp_protocol_deps="!librtmp_protocol"
2640 ffrtmphttp_protocol_select="http_protocol"
2641 ftp_protocol_select="tcp_protocol"
2642 gopher_protocol_select="network"
2643 http_protocol_select="tcp_protocol"
2644 httpproxy_protocol_select="tcp_protocol"
2645 https_protocol_select="tls_protocol"
2646 icecast_protocol_select="http_protocol"
2647 librtmp_protocol_deps="librtmp"
2648 librtmpe_protocol_deps="librtmp"
2649 librtmps_protocol_deps="librtmp"
2650 librtmpt_protocol_deps="librtmp"
2651 librtmpte_protocol_deps="librtmp"
2652 libsmbclient_protocol_deps="libsmbclient gplv3"
2653 libssh_protocol_deps="libssh"
2654 mmsh_protocol_select="http_protocol"
2655 mmst_protocol_select="network"
2656 rtmp_protocol_deps="!librtmp_protocol"
2657 rtmp_protocol_select="tcp_protocol"
2658 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2659 rtmps_protocol_deps="!librtmp_protocol"
2660 rtmps_protocol_select="tls_protocol"
2661 rtmpt_protocol_select="ffrtmphttp_protocol"
2662 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2663 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2664 rtp_protocol_select="udp_protocol"
2665 sctp_protocol_deps="struct_sctp_event_subscribe"
2666 sctp_protocol_select="network"
2667 srtp_protocol_select="rtp_protocol"
2668 tcp_protocol_select="network"
2669 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2670 tls_gnutls_protocol_select="tcp_protocol"
2671 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2672 tls_openssl_protocol_select="tcp_protocol"
2673 tls_securetransport_protocol_deps="securetransport"
2674 tls_securetransport_protocol_select="tcp_protocol"
2675 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2676 udp_protocol_select="network"
2677 udplite_protocol_select="network"
2678 unix_protocol_deps="sys_un_h"
2679 unix_protocol_select="network"
2680
2681 # filters
2682 amovie_filter_deps="avcodec avformat"
2683 aresample_filter_deps="swresample"
2684 ass_filter_deps="libass"
2685 asyncts_filter_deps="avresample"
2686 atempo_filter_deps="avcodec"
2687 atempo_filter_select="rdft"
2688 azmq_filter_deps="libzmq"
2689 blackframe_filter_deps="gpl"
2690 boxblur_filter_deps="gpl"
2691 bs2b_filter_deps="libbs2b"
2692 colormatrix_filter_deps="gpl"
2693 cover_rect_filter_deps="avcodec avformat gpl"
2694 cropdetect_filter_deps="gpl"
2695 delogo_filter_deps="gpl"
2696 deshake_filter_select="pixelutils"
2697 drawtext_filter_deps="libfreetype"
2698 ebur128_filter_deps="gpl"
2699 eq_filter_deps="gpl"
2700 fftfilt_filter_deps="avcodec"
2701 fftfilt_filter_select="rdft"
2702 flite_filter_deps="libflite"
2703 find_rect_filter_deps="avcodec avformat gpl"
2704 frei0r_filter_deps="frei0r dlopen"
2705 frei0r_src_filter_deps="frei0r dlopen"
2706 fspp_filter_deps="gpl"
2707 geq_filter_deps="gpl"
2708 histeq_filter_deps="gpl"
2709 hqdn3d_filter_deps="gpl"
2710 interlace_filter_deps="gpl"
2711 kerndeint_filter_deps="gpl"
2712 ladspa_filter_deps="ladspa dlopen"
2713 mcdeint_filter_deps="avcodec gpl"
2714 movie_filter_deps="avcodec avformat"
2715 mpdecimate_filter_deps="gpl"
2716 mpdecimate_filter_select="pixelutils"
2717 mptestsrc_filter_deps="gpl"
2718 negate_filter_deps="lut_filter"
2719 perspective_filter_deps="gpl"
2720 pp7_filter_deps="gpl"
2721 ocv_filter_deps="libopencv"
2722 owdenoise_filter_deps="gpl"
2723 pan_filter_deps="swresample"
2724 phase_filter_deps="gpl"
2725 pp_filter_deps="gpl postproc"
2726 pullup_filter_deps="gpl"
2727 removelogo_filter_deps="avcodec avformat swscale"
2728 repeatfields_filter_deps="gpl"
2729 resample_filter_deps="avresample"
2730 sab_filter_deps="gpl swscale"
2731 scale_filter_deps="swscale"
2732 select_filter_select="pixelutils"
2733 smartblur_filter_deps="gpl swscale"
2734 showcqt_filter_deps="avcodec"
2735 showcqt_filter_select="fft"
2736 showspectrum_filter_deps="avcodec"
2737 showspectrum_filter_select="rdft"
2738 spp_filter_deps="gpl avcodec"
2739 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2740 stereo3d_filter_deps="gpl"
2741 subtitles_filter_deps="avformat avcodec libass"
2742 super2xsai_filter_deps="gpl"
2743 tinterlace_filter_deps="gpl"
2744 vidstabdetect_filter_deps="libvidstab"
2745 vidstabtransform_filter_deps="libvidstab"
2746 pixfmts_super2xsai_test_deps="super2xsai_filter"
2747 tinterlace_merge_test_deps="tinterlace_filter"
2748 tinterlace_pad_test_deps="tinterlace_filter"
2749 uspp_filter_deps="gpl avcodec"
2750 zmq_filter_deps="libzmq"
2751 zoompan_filter_deps="swscale"
2752
2753 # examples
2754 avio_reading="avformat avcodec avutil"
2755 avio_list_dir="avformat avutil"
2756 avcodec_example_deps="avcodec avutil"
2757 decoding_encoding_example_deps="avcodec avformat avutil"
2758 demuxing_decoding_example_deps="avcodec avformat avutil"
2759 extract_mvs_example_deps="avcodec avformat avutil"
2760 filter_audio_example_deps="avfilter avutil"
2761 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2762 filtering_video_example_deps="avfilter avcodec avformat avutil"
2763 metadata_example_deps="avformat avutil"
2764 muxing_example_deps="avcodec avformat avutil swscale"
2765 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2766 remuxing_example_deps="avcodec avformat avutil"
2767 resampling_audio_example_deps="avutil swresample"
2768 scaling_video_example_deps="avutil swscale"
2769 transcode_aac_example_deps="avcodec avformat swresample"
2770 transcoding_example_deps="avfilter avcodec avformat avutil"
2771
2772 # libraries, in linking order
2773 avcodec_deps="avutil"
2774 avdevice_deps="avformat avcodec avutil"
2775 avfilter_deps="avutil"
2776 avformat_deps="avcodec avutil"
2777 avresample_deps="avutil"
2778 postproc_deps="avutil gpl"
2779 swresample_deps="avutil"
2780 swscale_deps="avutil"
2781
2782 # programs
2783 ffmpeg_deps="avcodec avfilter avformat swresample"
2784 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2785                null_filter
2786                setpts_filter trim_filter"
2787 ffplay_deps="avcodec avformat swscale swresample sdl"
2788 ffplay_libs='$sdl_libs'
2789 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2790 ffprobe_deps="avcodec avformat"
2791 ffserver_deps="avformat fork sarestart"
2792 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2793
2794 # documentation
2795 podpages_deps="perl"
2796 manpages_deps="perl pod2man"
2797 htmlpages_deps="perl"
2798 htmlpages_deps_any="makeinfo_html texi2html"
2799 txtpages_deps="perl makeinfo"
2800 doc_deps_any="manpages htmlpages podpages txtpages"
2801
2802 # default parameters
2803
2804 logfile="config.log"
2805
2806 # installation paths
2807 prefix_default="/usr/local"
2808 bindir_default='${prefix}/bin'
2809 datadir_default='${prefix}/share/ffmpeg'
2810 docdir_default='${prefix}/share/doc/ffmpeg'
2811 incdir_default='${prefix}/include'
2812 libdir_default='${prefix}/lib'
2813 mandir_default='${prefix}/share/man'
2814
2815 # toolchain
2816 ar_default="ar"
2817 cc_default="gcc"
2818 cxx_default="g++"
2819 host_cc_default="gcc"
2820 cp_f="cp -f"
2821 doxygen_default="doxygen"
2822 install="install"
2823 ln_s="ln -s -f"
2824 nm_default="nm -g"
2825 objformat="elf"
2826 pkg_config_default=pkg-config
2827 ranlib_default="ranlib"
2828 strip_default="strip"
2829 yasmexe_default="yasm"
2830 windres_default="windres"
2831
2832 # OS
2833 target_os_default=$(tolower $(uname -s))
2834 host_os=$target_os_default
2835
2836 # machine
2837 if test "$target_os_default" = aix; then
2838     arch_default=$(uname -p)
2839     strip_default="strip -X32_64"
2840 else
2841     arch_default=$(uname -m)
2842 fi
2843 cpu="generic"
2844 intrinsics="none"
2845
2846 # configurable options
2847 enable $PROGRAM_LIST
2848 enable $DOCUMENT_LIST
2849 enable $EXAMPLE_LIST
2850 enable $(filter_out avresample $LIBRARY_LIST)
2851 enable stripping
2852
2853 enable asm
2854 enable debug
2855 enable doc
2856 enable faan faandct faanidct
2857 enable optimizations
2858 enable runtime_cpudetect
2859 enable safe_bitstream_reader
2860 enable static
2861 enable swscale_alpha
2862 enable valgrind_backtrace
2863
2864 sws_max_filter_size_default=256
2865 set_default sws_max_filter_size
2866
2867 # Enable hwaccels by default.
2868 enable d3d11va dxva2 vaapi vda vdpau xvmc
2869 enable xlib
2870
2871 # build settings
2872 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2873 LIBPREF="lib"
2874 LIBSUF=".a"
2875 FULLNAME='$(NAME)$(BUILDSUF)'
2876 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2877 SLIBPREF="lib"
2878 SLIBSUF=".so"
2879 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2880 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2881 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2882 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2883 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2884 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2885
2886 asflags_filter=echo
2887 cflags_filter=echo
2888 ldflags_filter=echo
2889
2890 AS_C='-c'
2891 AS_O='-o $@'
2892 CC_C='-c'
2893 CC_E='-E -o $@'
2894 CC_O='-o $@'
2895 CXX_C='-c'
2896 CXX_O='-o $@'
2897 LD_O='-o $@'
2898 LD_LIB='-l%'
2899 LD_PATH='-L'
2900 HOSTCC_C='-c'
2901 HOSTCC_E='-E -o $@'
2902 HOSTCC_O='-o $@'
2903 HOSTLD_O='-o $@'
2904
2905 host_libs='-lm'
2906 host_cflags_filter=echo
2907 host_ldflags_filter=echo
2908
2909 target_path='$(CURDIR)'
2910
2911 # since the object filename is not given with the -MM flag, the compiler
2912 # is only able to print the basename, and we must add the path ourselves
2913 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2914 DEPFLAGS='-MM'
2915
2916 # find source path
2917 if test -f configure; then
2918     source_path=.
2919 else
2920     source_path=$(cd $(dirname "$0"); pwd)
2921     echo "$source_path" | grep -q '[[:blank:]]' &&
2922         die "Out of tree builds are impossible with whitespace in source path."
2923     test -e "$source_path/config.h" &&
2924         die "Out of tree builds are impossible with config.h in source dir."
2925 fi
2926
2927 for v in "$@"; do
2928     r=${v#*=}
2929     l=${v%"$r"}
2930     r=$(sh_quote "$r")
2931     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2932 done
2933
2934 find_things(){
2935     thing=$1
2936     pattern=$2
2937     file=$source_path/$3
2938     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2939 }
2940
2941 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2942 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2943 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2944 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2945 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2946 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2947 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2948 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2949 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2950 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2951 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2952
2953 ALL_COMPONENTS="
2954     $BSF_LIST
2955     $DECODER_LIST
2956     $DEMUXER_LIST
2957     $ENCODER_LIST
2958     $FILTER_LIST
2959     $HWACCEL_LIST
2960     $INDEV_LIST
2961     $MUXER_LIST
2962     $OUTDEV_LIST
2963     $PARSER_LIST
2964     $PROTOCOL_LIST
2965 "
2966
2967 for n in $COMPONENT_LIST; do
2968     v=$(toupper ${n%s})_LIST
2969     eval enable \$$v
2970     eval ${n}_if_any="\$$v"
2971 done
2972
2973 enable $ARCH_EXT_LIST
2974
2975 die_unknown(){
2976     echo "Unknown option \"$1\"."
2977     echo "See $0 --help for available options."
2978     exit 1
2979 }
2980
2981 print_3_columns() {
2982     cat | tr ' ' '\n' | sort | pr -r -3 -t
2983 }
2984
2985 show_list() {
2986     suffix=_$1
2987     shift
2988     echo $* | sed s/$suffix//g | print_3_columns
2989     exit 0
2990 }
2991
2992 rand_list(){
2993     IFS=', '
2994     set -- $*
2995     unset IFS
2996     for thing; do
2997         comp=${thing%:*}
2998         prob=${thing#$comp}
2999         prob=${prob#:}
3000         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3001         echo "prob ${prob:-0.5}"
3002         printf '%s\n' $comp
3003     done
3004 }
3005
3006 do_random(){
3007     action=$1
3008     shift
3009     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3010     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3011 }
3012
3013 for opt do
3014     optval="${opt#*=}"
3015     case "$opt" in
3016         --extra-ldflags=*)
3017             add_ldflags $optval
3018         ;;
3019         --extra-ldexeflags=*)
3020             add_ldexeflags $optval
3021         ;;
3022         --extra-ldlibflags=*)
3023             add_ldlibflags $optval
3024         ;;
3025         --extra-libs=*)
3026             add_extralibs $optval
3027         ;;
3028         --disable-devices)
3029             disable $INDEV_LIST $OUTDEV_LIST
3030         ;;
3031         --enable-debug=*)
3032             debuglevel="$optval"
3033         ;;
3034         --disable-programs)
3035             disable $PROGRAM_LIST
3036         ;;
3037         --disable-everything)
3038             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3039         ;;
3040         --disable-all)
3041             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3042             disable $LIBRARY_LIST $PROGRAM_LIST doc
3043         ;;
3044         --enable-random|--disable-random)
3045             action=${opt%%-random}
3046             do_random ${action#--} $COMPONENT_LIST
3047         ;;
3048         --enable-random=*|--disable-random=*)
3049             action=${opt%%-random=*}
3050             do_random ${action#--} $optval
3051         ;;
3052         --enable-*=*|--disable-*=*)
3053             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3054             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3055             eval list=\$$(toupper $thing)_LIST
3056             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3057             list=$(filter "$name" $list)
3058             [ "$list" = "" ] && warn "Option $opt did not match anything"
3059             $action $list
3060         ;;
3061         --enable-?*|--disable-?*)
3062             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3063             if is_in $option $COMPONENT_LIST; then
3064                 test $action = disable && action=unset
3065                 eval $action \$$(toupper ${option%s})_LIST
3066             elif is_in $option $CMDLINE_SELECT; then
3067                 $action $option
3068             else
3069                 die_unknown $opt
3070             fi
3071         ;;
3072         --list-*)
3073             NAME="${opt#--list-}"
3074             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3075             NAME=${NAME%s}
3076             eval show_list $NAME \$$(toupper $NAME)_LIST
3077         ;;
3078         --help|-h) show_help
3079         ;;
3080         --fatal-warnings) enable fatal_warnings
3081         ;;
3082         *)
3083             optname="${opt%%=*}"
3084             optname="${optname#--}"
3085             optname=$(echo "$optname" | sed 's/-/_/g')
3086             if is_in $optname $CMDLINE_SET; then
3087                 eval $optname='$optval'
3088             elif is_in $optname $CMDLINE_APPEND; then
3089                 append $optname "$optval"
3090             else
3091                 die_unknown $opt
3092             fi
3093         ;;
3094     esac
3095 done
3096
3097 for e in $env; do
3098     eval "export $e"
3099 done
3100
3101 disabled logging && logfile=/dev/null
3102
3103 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3104 set >> $logfile
3105
3106 test -n "$valgrind" && toolchain="valgrind-memcheck"
3107
3108 case "$toolchain" in
3109     clang-asan)
3110         cc_default="clang"
3111         add_cflags  -fsanitize=address
3112         add_ldflags -fsanitize=address
3113     ;;
3114     clang-tsan)
3115         cc_default="clang"
3116         add_cflags  -fsanitize=thread -pie
3117         add_ldflags -fsanitize=thread -pie
3118     ;;
3119     clang-usan)
3120         cc_default="clang"
3121         add_cflags  -fsanitize=undefined
3122         add_ldflags -fsanitize=undefined
3123     ;;
3124     gcc-asan)
3125         cc_default="gcc"
3126         add_cflags  -fsanitize=address
3127         add_ldflags -fsanitize=address
3128     ;;
3129     gcc-tsan)
3130         cc_default="gcc"
3131         add_cflags  -fsanitize=thread -pie -fPIC
3132         add_ldflags -fsanitize=thread -pie -fPIC
3133     ;;
3134     gcc-usan)
3135         cc_default="gcc"
3136         add_cflags  -fsanitize=undefined
3137         add_ldflags -fsanitize=undefined
3138     ;;
3139     valgrind-massif)
3140         target_exec_default=${valgrind:-"valgrind"}
3141         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"
3142     ;;
3143     valgrind-memcheck)
3144         target_exec_default=${valgrind:-"valgrind"}
3145         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3146     ;;
3147     msvc)
3148         # Check whether the current MSVC version needs the C99 converter.
3149         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3150         # support enough of C99 to build ffmpeg. Default to the new
3151         # behaviour if the regexp was unable to match anything, since this
3152         # successfully parses the version number of existing supported
3153         # versions that require the converter (MSVC 2010 and 2012).
3154         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3155         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3156             cc_default="cl"
3157         else
3158             cc_default="c99wrap cl"
3159         fi
3160         ld_default="link"
3161         nm_default="dumpbin -symbols"
3162         ar_default="lib"
3163         target_os_default="win32"
3164         # Use a relative path for TMPDIR. This makes sure all the
3165         # ffconf temp files are written with a relative path, avoiding
3166         # issues with msys/win32 path conversion for MSVC parameters
3167         # such as -Fo<file> or -out:<file>.
3168         TMPDIR=.
3169     ;;
3170     icl)
3171         cc_default="icl"
3172         ld_default="xilink"
3173         nm_default="dumpbin -symbols"
3174         ar_default="xilib"
3175         target_os_default="win32"
3176         TMPDIR=.
3177     ;;
3178     gcov)
3179         add_cflags  -fprofile-arcs -ftest-coverage
3180         add_ldflags -fprofile-arcs -ftest-coverage
3181     ;;
3182     hardened)
3183         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3184         add_cflags   -fno-strict-overflow -fstack-protector-all
3185         add_ldflags  -Wl,-z,relro -Wl,-z,now
3186     ;;
3187     ?*)
3188         die "Unknown toolchain $toolchain"
3189     ;;
3190 esac
3191
3192 test -n "$cross_prefix" && enable cross_compile
3193
3194 if enabled cross_compile; then
3195     test -n "$arch" && test -n "$target_os" ||
3196         die "Must specify target arch and OS when cross-compiling"
3197 fi
3198
3199 ar_default="${cross_prefix}${ar_default}"
3200 cc_default="${cross_prefix}${cc_default}"
3201 cxx_default="${cross_prefix}${cxx_default}"
3202 nm_default="${cross_prefix}${nm_default}"
3203 pkg_config_default="${cross_prefix}${pkg_config_default}"
3204 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3205     ranlib_default="${cross_prefix}${ranlib_default} -D"
3206 else
3207     ranlib_default="${cross_prefix}${ranlib_default}"
3208 fi
3209 strip_default="${cross_prefix}${strip_default}"
3210 windres_default="${cross_prefix}${windres_default}"
3211
3212 sysinclude_default="${sysroot}/usr/include"
3213
3214 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3215     target_exec target_os yasmexe
3216 enabled cross_compile || host_cc_default=$cc
3217 set_default host_cc
3218
3219 pkg_config_fail_message=""
3220 if ! $pkg_config --version >/dev/null 2>&1; then
3221     warn "$pkg_config not found, library detection may fail."
3222     pkg_config=false
3223 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3224     pkg_config_fail_message="
3225 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3226 fi
3227
3228 if test $doxygen != $doxygen_default && \
3229   ! $doxygen --version >/dev/null 2>&1; then
3230     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3231 fi
3232
3233 exesuf() {
3234     case $1 in
3235         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3236     esac
3237 }
3238
3239 EXESUF=$(exesuf $target_os)
3240 HOSTEXESUF=$(exesuf $host_os)
3241
3242 # set temporary file name
3243 : ${TMPDIR:=$TEMPDIR}
3244 : ${TMPDIR:=$TMP}
3245 : ${TMPDIR:=/tmp}
3246
3247 if [ -n "$tempprefix" ] ; then
3248     mktemp(){
3249         echo $tempprefix.${HOSTNAME}.${UID}
3250     }
3251 elif ! check_cmd mktemp -u XXXXXX; then
3252     # simple replacement for missing mktemp
3253     # NOT SAFE FOR GENERAL USE
3254     mktemp(){
3255         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3256     }
3257 fi
3258
3259 tmpfile(){
3260     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3261         (set -C; exec > $tmp) 2>/dev/null ||
3262         die "Unable to create temporary file in $TMPDIR."
3263     append TMPFILES $tmp
3264     eval $1=$tmp
3265 }
3266
3267 trap 'rm -f -- $TMPFILES' EXIT
3268
3269 tmpfile TMPASM .asm
3270 tmpfile TMPC   .c
3271 tmpfile TMPCPP .cpp
3272 tmpfile TMPE   $EXESUF
3273 tmpfile TMPH   .h
3274 tmpfile TMPM   .m
3275 tmpfile TMPO   .o
3276 tmpfile TMPS   .S
3277 tmpfile TMPSH  .sh
3278 tmpfile TMPV   .ver
3279
3280 unset -f mktemp
3281
3282 chmod +x $TMPE
3283
3284 # make sure we can execute files in $TMPDIR
3285 cat > $TMPSH 2>> $logfile <<EOF
3286 #! /bin/sh
3287 EOF
3288 chmod +x $TMPSH >> $logfile 2>&1
3289 if ! $TMPSH >> $logfile 2>&1; then
3290     cat <<EOF
3291 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3292 variable to another directory and make sure that it is not mounted noexec.
3293 EOF
3294     die "Sanity test failed."
3295 fi
3296
3297 armasm_flags(){
3298     for flag; do
3299         case $flag in
3300             # Filter out MSVC cl.exe options from cflags that shouldn't
3301             # be passed to gas-preprocessor
3302             -M[TD]*)                                            ;;
3303             *)                  echo $flag                      ;;
3304         esac
3305    done
3306 }
3307
3308 ccc_flags(){
3309     for flag; do
3310         case $flag in
3311             -std=c99)           echo -c99                       ;;
3312             -mcpu=*)            echo -arch ${flag#*=}           ;;
3313             -mieee)             echo -ieee                      ;;
3314             -O*|-fast)          echo $flag                      ;;
3315             -fno-math-errno)    echo -assume nomath_errno       ;;
3316             -g)                 echo -g3                        ;;
3317             -Wall)              echo -msg_enable level2         ;;
3318             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3319             -Wl,*)              echo $flag                      ;;
3320             -f*|-W*)                                            ;;
3321             *)                  echo $flag                      ;;
3322         esac
3323    done
3324 }
3325
3326 cparser_flags(){
3327     for flag; do
3328         case $flag in
3329             -Wno-switch)             echo -Wno-switch-enum ;;
3330             -Wno-format-zero-length) ;;
3331             -Wdisabled-optimization) ;;
3332             -Wno-pointer-sign)       echo -Wno-other ;;
3333             *)                       echo $flag ;;
3334         esac
3335     done
3336 }
3337
3338 msvc_common_flags(){
3339     for flag; do
3340         case $flag in
3341             # In addition to specifying certain flags under the compiler
3342             # specific filters, they must be specified here as well or else the
3343             # generic catch all at the bottom will print the original flag.
3344             -Wall)                ;;
3345             -std=c99)             ;;
3346             # Common flags
3347             -fomit-frame-pointer) ;;
3348             -g)                   echo -Z7 ;;
3349             -fno-math-errno)      ;;
3350             -fno-common)          ;;
3351             -fno-signed-zeros)    ;;
3352             -fPIC)                ;;
3353             -mthumb)              ;;
3354             -march=*)             ;;
3355             -lz)                  echo zlib.lib ;;
3356             -lavifil32)           echo vfw32.lib ;;
3357             -lavicap32)           echo vfw32.lib user32.lib ;;
3358             -l*)                  echo ${flag#-l}.lib ;;
3359             -L*)                  echo -libpath:${flag#-L} ;;
3360             *)                    echo $flag ;;
3361         esac
3362     done
3363 }
3364
3365 msvc_flags(){
3366     msvc_common_flags "$@"
3367     for flag; do
3368         case $flag in
3369             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3370                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3371                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3372                                        -wd4307 \
3373                                        -wd4273 -wd4554 -wd4701 ;;
3374         esac
3375     done
3376 }
3377
3378 icl_flags(){
3379     msvc_common_flags "$@"
3380     for flag; do
3381         case $flag in
3382             # Despite what Intel's documentation says -Wall, which is supported
3383             # on Windows, does enable remarks so disable them here.
3384             -Wall)                echo $flag -Qdiag-disable:remark ;;
3385             -std=c99)             echo -Qstd=c99 ;;
3386             -flto)                echo -ipo ;;
3387         esac
3388     done
3389 }
3390
3391 icc_flags(){
3392     for flag; do
3393         case $flag in
3394             -flto)                echo -ipo ;;
3395             *)                    echo $flag ;;
3396         esac
3397     done
3398 }
3399
3400 pgi_flags(){
3401     for flag; do
3402         case $flag in
3403             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3404             -fomit-frame-pointer) echo -Mnoframe ;;
3405             -g)                   echo -gopt ;;
3406             *)                    echo $flag ;;
3407         esac
3408     done
3409 }
3410
3411 suncc_flags(){
3412     for flag; do
3413         case $flag in
3414             -march=*|-mcpu=*)
3415                 case "${flag#*=}" in
3416                     native)                   echo -xtarget=native       ;;
3417                     v9|niagara)               echo -xarch=sparc          ;;
3418                     ultrasparc)               echo -xarch=sparcvis       ;;
3419                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3420                     i586|pentium)             echo -xchip=pentium        ;;
3421                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3422                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3423                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3424                     pentium4*)          echo -xtarget=pentium4           ;;
3425                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3426                     *-sse3)             echo -xarch=sse3                 ;;
3427                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3428                     bonnell)                   echo -xarch=ssse3         ;;
3429                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3430                     westmere)                  echo -xtarget=westmere    ;;
3431                     silvermont)                echo -xarch=sse4_2        ;;
3432                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3433                     core-avx*|ivybridge|haswell|broadwell)
3434                                                echo -xarch=avx           ;;
3435                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3436                     btver1)                    echo -xarch=amdsse4a      ;;
3437                     btver2|bdver*)             echo -xarch=avx           ;;
3438                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3439                     k8|opteron|athlon64|athlon-fx)
3440                                                echo -xarch=sse2a         ;;
3441                     athlon*)                   echo -xarch=pentium_proa  ;;
3442                 esac
3443                 ;;
3444             -std=c99)             echo -xc99              ;;
3445             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3446             -fPIC)                echo -KPIC -xcode=pic32 ;;
3447             -W*,*)                echo $flag              ;;
3448             -f*-*|-W*|-mimpure-text)                      ;;
3449             -shared)              echo -G                 ;;
3450             *)                    echo $flag              ;;
3451         esac
3452     done
3453 }
3454
3455 tms470_flags(){
3456     for flag; do
3457         case $flag in
3458             -march=*|-mcpu=*)
3459                 case "${flag#*=}" in
3460                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3461                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3462                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3463                     armv6*|arm11*)          echo -mv=6   ;;
3464                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3465                                             echo -mv=5e  ;;
3466                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3467                 esac
3468                 ;;
3469             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3470             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3471             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3472             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3473             -msoft-float)   echo --float_support=vfplib       ;;
3474             -O[0-3]|-mf=*)  echo $flag                        ;;
3475             -g)             echo -g -mn                       ;;
3476             -pds=*)         echo $flag                        ;;
3477             -D*|-I*)        echo $flag                        ;;
3478             --gcc|--abi=*)  echo $flag                        ;;
3479             -me)            echo $flag                        ;;
3480         esac
3481     done
3482 }
3483
3484 probe_cc(){
3485     pfx=$1
3486     _cc=$2
3487
3488     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3489     unset _ld_o _ldflags _ld_lib _ld_path
3490     unset _depflags _DEPCMD _DEPFLAGS
3491     _flags_filter=echo
3492
3493     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3494         true # no-op to avoid reading stdin in following checks
3495     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3496         _type=llvm_gcc
3497         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3498         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3499         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3500         _cflags_speed='-O3'
3501         _cflags_size='-Os'
3502     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3503         _type=gcc
3504         gcc_version=$($_cc --version | head -n1)
3505         gcc_basever=$($_cc -dumpversion)
3506         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3507         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3508         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3509         if ! $_cc -dumpversion | grep -q '^2\.'; then
3510             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3511         fi
3512         _cflags_speed='-O3'
3513         _cflags_size='-Os'
3514     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3515         _type=icc
3516         _ident=$($_cc --version | head -n1)
3517         _depflags='-MMD'
3518         _cflags_speed='-O3'
3519         _cflags_size='-Os'
3520         _cflags_noopt='-O1'
3521         _flags_filter=icc_flags
3522     elif $_cc -v 2>&1 | grep -q xlc; then
3523         _type=xlc
3524         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3525         _cflags_speed='-O5'
3526         _cflags_size='-O5 -qcompact'
3527     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3528         _type=ccc
3529         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3530         _DEPFLAGS='-M'
3531         _cflags_speed='-fast'
3532         _cflags_size='-O1'
3533         _flags_filter=ccc_flags
3534     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3535         test -d "$sysroot" || die "No valid sysroot specified."
3536         _type=armcc
3537         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3538         armcc_conf="$PWD/armcc.conf"
3539         $_cc --arm_linux_configure                 \
3540              --arm_linux_config_file="$armcc_conf" \
3541              --configure_sysroot="$sysroot"        \
3542              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3543              die "Error creating armcc configuration file."
3544         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3545         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3546         as_default="${cross_prefix}gcc"
3547         _depflags='-MMD'
3548         _cflags_speed='-O3'
3549         _cflags_size='-Os'
3550     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3551         _type=tms470
3552         _ident=$($_cc -version | head -n1 | tr -s ' ')
3553         _flags='--gcc --abi=eabi -me'
3554         _cc_e='-ppl -fe=$@'
3555         _cc_o='-fe=$@'
3556         _depflags='-ppa -ppd=$(@:.o=.d)'
3557         _cflags_speed='-O3 -mf=5'
3558         _cflags_size='-O3 -mf=2'
3559         _flags_filter=tms470_flags
3560     elif $_cc -v 2>&1 | grep -q clang; then
3561         _type=clang
3562         _ident=$($_cc --version | head -n1)
3563         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3564         _cflags_speed='-O3'
3565         _cflags_size='-Os'
3566     elif $_cc -V 2>&1 | grep -q Sun; then
3567         _type=suncc
3568         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3569         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3570         _DEPFLAGS='-xM1 -xc99'
3571         _ldflags='-std=c99'
3572         _cflags_speed='-O5'
3573         _cflags_size='-O5 -xspace'
3574         _flags_filter=suncc_flags
3575     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3576         _type=pathscale
3577         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3578         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3579         _cflags_speed='-O2'
3580         _cflags_size='-Os'
3581         _flags_filter='filter_out -Wdisabled-optimization'
3582     elif $_cc -v 2>&1 | grep -q Open64; then
3583         _type=open64
3584         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3585         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3586         _cflags_speed='-O2'
3587         _cflags_size='-Os'
3588         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3589     elif $_cc -V 2>&1 | grep -q Portland; then
3590         _type=pgi
3591         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3592         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3593         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3594         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3595         _cflags_noopt="-O"
3596         _flags_filter=pgi_flags
3597     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3598         _type=armasm
3599         _ident=$($_cc | head -n1)
3600         # 4509: "This form of conditional instruction is deprecated"
3601         _flags="-nologo -ignore 4509"
3602         _flags_filter=armasm_flags
3603     elif $_cc 2>&1 | grep -q Intel; then
3604         _type=icl
3605         _ident=$($_cc 2>&1 | head -n1)
3606         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3607         # Not only is O3 broken on 13.x+ but it is slower on all previous
3608         # versions (tested) as well.
3609         _cflags_speed="-O2"
3610         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3611         if $_cc 2>&1 | grep -q Linker; then
3612             _ld_o='-out:$@'
3613         else
3614             _ld_o='-Fe$@'
3615         fi
3616         _cc_o='-Fo$@'
3617         _cc_e='-P'
3618         _flags_filter=icl_flags
3619         _ld_lib='lib%.a'
3620         _ld_path='-libpath:'
3621         # -Qdiag-error to make icl error when seeing certain unknown arguments
3622         _flags='-nologo -Qdiag-error:4044,10157'
3623         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3624         # with MSVC which enables it by default.
3625         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3626         disable stripping
3627     elif $_cc 2>&1 | grep -q Microsoft; then
3628         _type=msvc
3629         _ident=$($_cc 2>&1 | head -n1)
3630         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3631         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3632         _cflags_speed="-O2"
3633         _cflags_size="-O1"
3634         if $_cc 2>&1 | grep -q Linker; then
3635             _ld_o='-out:$@'
3636         else
3637             _ld_o='-Fe$@'
3638         fi
3639         _cc_o='-Fo$@'
3640         _cc_e='-P -Fi$@'
3641         _flags_filter=msvc_flags
3642         _ld_lib='lib%.a'
3643         _ld_path='-libpath:'
3644         _flags='-nologo'
3645         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3646         disable stripping
3647     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3648         _type=cparser
3649         _ident=$($_cc --version | head -n1)
3650         _depflags='-MMD'
3651         _cflags_speed='-O4'
3652         _cflags_size='-O2'
3653         _flags_filter=cparser_flags
3654     fi
3655
3656     eval ${pfx}_type=\$_type
3657     eval ${pfx}_ident=\$_ident
3658 }
3659
3660 set_ccvars(){
3661     eval ${1}_C=\${_cc_c-\${${1}_C}}
3662     eval ${1}_E=\${_cc_e-\${${1}_E}}
3663     eval ${1}_O=\${_cc_o-\${${1}_O}}
3664
3665     if [ -n "$_depflags" ]; then
3666         eval ${1}_DEPFLAGS=\$_depflags
3667     else
3668         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3669         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3670         eval DEP${1}FLAGS=\$_flags
3671     fi
3672 }
3673
3674 probe_cc cc "$cc"
3675 cflags_filter=$_flags_filter
3676 cflags_speed=$_cflags_speed
3677 cflags_size=$_cflags_size
3678 cflags_noopt=$_cflags_noopt
3679 add_cflags $_flags $_cflags
3680 cc_ldflags=$_ldflags
3681 set_ccvars CC
3682
3683 probe_cc hostcc "$host_cc"
3684 host_cflags_filter=$_flags_filter
3685 add_host_cflags  $_flags $_cflags
3686 set_ccvars HOSTCC
3687
3688 test -n "$cc_type" && enable $cc_type ||
3689     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3690
3691 : ${as_default:=$cc}
3692 : ${dep_cc_default:=$cc}
3693 : ${ld_default:=$cc}
3694 : ${host_ld_default:=$host_cc}
3695 set_default ar as dep_cc ld host_ld windres
3696
3697 probe_cc as "$as"
3698 asflags_filter=$_flags_filter
3699 add_asflags $_flags $_cflags
3700 set_ccvars AS
3701
3702 probe_cc ld "$ld"
3703 ldflags_filter=$_flags_filter
3704 add_ldflags $_flags $_ldflags
3705 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3706 LD_O=${_ld_o-$LD_O}
3707 LD_LIB=${_ld_lib-$LD_LIB}
3708 LD_PATH=${_ld_path-$LD_PATH}
3709
3710 probe_cc hostld "$host_ld"
3711 host_ldflags_filter=$_flags_filter
3712 add_host_ldflags $_flags $_ldflags
3713 HOSTLD_O=${_ld_o-$HOSTLD_O}
3714
3715 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3716     probe_cc depcc "$dep_cc"
3717     CCDEP=${_DEPCMD:-$DEPCMD}
3718     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3719     DEPCCFLAGS=$_flags
3720 fi
3721
3722 if $ar 2>&1 | grep -q Microsoft; then
3723     arflags="-nologo"
3724     ar_o='-out:$@'
3725 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3726     arflags="rq"
3727     ar_o='$@'
3728 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3729     arflags='-Xany -r -c'
3730     ar_o='$@'
3731 elif $ar 2>&1 | grep -q "\[D\] "; then
3732     arflags="rcD"
3733     ar_o='$@'
3734 else
3735     arflags="rc"
3736     ar_o='$@'
3737 fi
3738
3739 add_cflags $extra_cflags
3740 add_cxxflags $extra_cxxflags
3741 add_asflags $extra_cflags
3742
3743 if test -n "$sysroot"; then
3744     case "$cc_type" in
3745         gcc|llvm_gcc|clang)
3746             add_cppflags --sysroot="$sysroot"
3747             add_ldflags --sysroot="$sysroot"
3748 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3749             add_cppflags -isysroot "$sysroot"
3750             add_ldflags -isysroot "$sysroot"
3751         ;;
3752         tms470)
3753             add_cppflags -I"$sysinclude"
3754             add_ldflags  --sysroot="$sysroot"
3755         ;;
3756     esac
3757 fi
3758
3759 if test "$cpu" = host; then
3760     enabled cross_compile &&
3761         die "--cpu=host makes no sense when cross-compiling."
3762
3763     case "$cc_type" in
3764         gcc|llvm_gcc)
3765             check_native(){
3766                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3767                 sed -n "/cc1.*$1=/{
3768                             s/.*$1=\\([^ ]*\\).*/\\1/
3769                             p
3770                             q
3771                         }" $TMPE
3772             }
3773             cpu=$(check_native -march || check_native -mcpu)
3774         ;;
3775     esac
3776
3777     test "${cpu:-host}" = host &&
3778         die "--cpu=host not supported with compiler $cc"
3779 fi
3780
3781 # Deal with common $arch aliases
3782 case "$arch" in
3783     aarch64|arm64)
3784         arch="aarch64"
3785     ;;
3786     arm*|iPad*|iPhone*)
3787         arch="arm"
3788     ;;
3789     mips*|IP*)
3790         arch="mips"
3791     ;;
3792     parisc*|hppa*)
3793         arch="parisc"
3794     ;;
3795     "Power Macintosh"|ppc*|powerpc*)
3796         arch="ppc"
3797     ;;
3798     s390|s390x)
3799         arch="s390"
3800     ;;
3801     sh4|sh)
3802         arch="sh4"
3803     ;;
3804     sun4u|sparc*)
3805         arch="sparc"
3806     ;;
3807     tilegx|tile-gx)
3808         arch="tilegx"
3809     ;;
3810     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3811         arch="x86"
3812     ;;
3813 esac
3814
3815 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3816 enable $arch
3817
3818 # Add processor-specific flags
3819 if enabled aarch64; then
3820
3821     case $cpu in
3822         armv*)
3823             cpuflags="-march=$cpu"
3824         ;;
3825         *)
3826             cpuflags="-mcpu=$cpu"
3827         ;;
3828     esac
3829
3830 elif enabled alpha; then
3831
3832     cpuflags="-mcpu=$cpu"
3833
3834 elif enabled arm; then
3835
3836     check_arm_arch() {
3837         check_cpp_condition stddef.h \
3838             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3839             $cpuflags
3840     }
3841
3842     probe_arm_arch() {
3843         if   check_arm_arch 4;        then echo armv4;
3844         elif check_arm_arch 4T;       then echo armv4t;
3845         elif check_arm_arch 5;        then echo armv5;
3846         elif check_arm_arch 5E;       then echo armv5e;
3847         elif check_arm_arch 5T;       then echo armv5t;
3848         elif check_arm_arch 5TE;      then echo armv5te;
3849         elif check_arm_arch 5TEJ;     then echo armv5te;
3850         elif check_arm_arch 6;        then echo armv6;
3851         elif check_arm_arch 6J;       then echo armv6j;
3852         elif check_arm_arch 6K;       then echo armv6k;
3853         elif check_arm_arch 6Z;       then echo armv6z;
3854         elif check_arm_arch 6ZK;      then echo armv6zk;
3855         elif check_arm_arch 6T2;      then echo armv6t2;
3856         elif check_arm_arch 7;        then echo armv7;
3857         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3858         elif check_arm_arch 7S;       then echo armv7-a;
3859         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3860         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3861         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3862         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3863         fi
3864     }
3865
3866     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3867
3868     case $cpu in
3869         armv*)
3870             cpuflags="-march=$cpu"
3871             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3872         ;;
3873         *)
3874             cpuflags="-mcpu=$cpu"
3875             case $cpu in
3876                 cortex-a*)                               subarch=armv7a  ;;
3877                 cortex-r*)                               subarch=armv7r  ;;
3878                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3879                 arm11*)                                  subarch=armv6   ;;
3880                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3881                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3882                 *)                             subarch=$(probe_arm_arch) ;;
3883             esac
3884         ;;
3885     esac
3886
3887     case "$subarch" in
3888         armv5t*)    enable fast_clz                ;;
3889         armv[6-8]*)
3890             enable fast_clz
3891             disabled fast_unaligned || enable fast_unaligned
3892             ;;
3893     esac
3894
3895 elif enabled avr32; then
3896
3897     case $cpu in
3898         ap7[02]0[0-2])
3899             subarch="avr32_ap"
3900             cpuflags="-mpart=$cpu"
3901         ;;
3902         ap)
3903             subarch="avr32_ap"
3904             cpuflags="-march=$cpu"
3905         ;;
3906         uc3[ab]*)
3907             subarch="avr32_uc"
3908             cpuflags="-mcpu=$cpu"
3909         ;;
3910         uc)
3911             subarch="avr32_uc"
3912             cpuflags="-march=$cpu"
3913         ;;
3914     esac
3915
3916 elif enabled bfin; then
3917
3918     cpuflags="-mcpu=$cpu"
3919
3920 elif enabled mips; then
3921
3922     cpuflags="-march=$cpu"
3923
3924     case $cpu in
3925         24kc)
3926             disable mips32r5
3927             disable mips64r6
3928             disable mipsfpu
3929             disable mipsdspr1
3930             disable mipsdspr2
3931             disable msa
3932         ;;
3933         24kf*)
3934             disable mips32r5
3935             disable mips64r6
3936             disable mipsdspr1
3937             disable mipsdspr2
3938             disable msa
3939         ;;
3940         24kec|34kc|1004kc)
3941             disable mips32r5
3942             disable mips64r6
3943             disable mipsfpu
3944             disable mipsdspr2
3945             disable msa
3946         ;;
3947         24kef*|34kf*|1004kf*)
3948             disable mips32r5
3949             disable mips64r6
3950             disable mipsdspr2
3951             disable msa
3952         ;;
3953         74kc)
3954             disable mips32r5
3955             disable mips64r6
3956             disable mipsfpu
3957             disable msa
3958         ;;
3959         74kf)
3960             disable mips32r5
3961             disable mips64r6
3962             disable msa
3963         ;;
3964         p5600)
3965             disable mips64r6
3966             disable mipsdspr1
3967             disable mipsdspr2
3968
3969             check_cflags "-mtune=p5600"
3970         ;;
3971         i6400)
3972             disable mips32r5
3973             disable mipsdspr1
3974             disable mipsdspr2
3975             disable mipsfpu
3976
3977             check_cflags "-mtune=i6400 -mabi=64"
3978             check_ldflags "-mabi=64"
3979         ;;
3980         loongson*)
3981             disable mipsfpu
3982             disable mips32r2
3983             disable mips32r5
3984             disable mips64r6
3985             disable mipsdspr1
3986             disable mipsdspr2
3987             disable msa
3988             enable local_aligned_8 local_aligned_16 local_aligned_32
3989             enable simd_align_16
3990             enable fast_64bit
3991             enable fast_clz
3992             enable fast_cmov
3993             enable fast_unaligned
3994             disable aligned_stack
3995             case $cpu in
3996                 loongson3*)
3997                     cpuflags="-march=loongson3a -mhard-float"
3998                 ;;
3999                 loongson2e)
4000                     cpuflags="-march=loongson2e -mhard-float"
4001                 ;;
4002                 loongson2f)
4003                     cpuflags="-march=loongson2f -mhard-float"
4004                 ;;
4005             esac
4006         ;;
4007         generic)
4008             disable mips32r5
4009             disable mips64r6
4010             disable msa
4011         ;;
4012     esac
4013
4014 elif enabled ppc; then
4015
4016     disable ldbrx
4017
4018     case $(tolower $cpu) in
4019         601|ppc601|powerpc601)
4020             cpuflags="-mcpu=601"
4021             disable altivec
4022         ;;
4023         603*|ppc603*|powerpc603*)
4024             cpuflags="-mcpu=603"
4025             disable altivec
4026         ;;
4027         604*|ppc604*|powerpc604*)
4028             cpuflags="-mcpu=604"
4029             disable altivec
4030         ;;
4031         g3|75*|ppc75*|powerpc75*)
4032             cpuflags="-mcpu=750"
4033             disable altivec
4034         ;;
4035         g4|745*|ppc745*|powerpc745*)
4036             cpuflags="-mcpu=7450"
4037             disable vsx
4038         ;;
4039         74*|ppc74*|powerpc74*)
4040             cpuflags="-mcpu=7400"
4041             disable vsx
4042         ;;
4043         g5|970|ppc970|powerpc970)
4044             cpuflags="-mcpu=970"
4045             disable vsx
4046         ;;
4047         power[3-6]*)
4048             cpuflags="-mcpu=$cpu"
4049             disable vsx
4050         ;;
4051         power[7-8]*)
4052             cpuflags="-mcpu=$cpu"
4053         ;;
4054         cell)
4055             cpuflags="-mcpu=cell"
4056             enable ldbrx
4057             disable vsx
4058         ;;
4059         e500mc)
4060             cpuflags="-mcpu=e500mc"
4061             disable altivec
4062         ;;
4063         e500v2)
4064             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4065             disable altivec
4066             disable dcbzl
4067         ;;
4068         e500)
4069             cpuflags="-mcpu=8540 -mhard-float"
4070             disable altivec
4071             disable dcbzl
4072         ;;
4073     esac
4074
4075 elif enabled sparc; then
4076
4077     case $cpu in
4078         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4079             cpuflags="-mcpu=$cpu"
4080         ;;
4081         ultrasparc*|niagara[234])
4082             cpuflags="-mcpu=$cpu"
4083         ;;
4084     esac
4085
4086 elif enabled x86; then
4087
4088     case $cpu in
4089         i[345]86|pentium)
4090             cpuflags="-march=$cpu"
4091             disable i686
4092             disable mmx
4093         ;;
4094         # targets that do NOT support nopl and conditional mov (cmov)
4095         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4096             cpuflags="-march=$cpu"
4097             disable i686
4098         ;;
4099         # targets that do support nopl and conditional mov (cmov)
4100         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4101         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4102             cpuflags="-march=$cpu"
4103             enable i686
4104             enable fast_cmov
4105         ;;
4106         # targets that do support conditional mov but on which it's slow
4107         pentium4|pentium4m|prescott|nocona)
4108             cpuflags="-march=$cpu"
4109             enable i686
4110             disable fast_cmov
4111         ;;
4112     esac
4113
4114 fi
4115
4116 if [ "$cpu" != generic ]; then
4117     add_cflags  $cpuflags
4118     add_asflags $cpuflags
4119 fi
4120
4121 # compiler sanity check
4122 check_exec <<EOF
4123 int main(void){ return 0; }
4124 EOF
4125 if test "$?" != 0; then
4126     echo "$cc is unable to create an executable file."
4127     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4128         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4129         echo "Only do this if you know what cross compiling means."
4130     fi
4131     die "C compiler test failed."
4132 fi
4133
4134 add_cppflags -D_ISOC99_SOURCE
4135 add_cxxflags -D__STDC_CONSTANT_MACROS
4136 check_cflags -std=c99
4137 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4138 #include <stdlib.h>
4139 EOF
4140 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4141 #include <stdlib.h>
4142 EOF
4143
4144 add_host_cppflags -D_ISOC99_SOURCE
4145 check_host_cflags -std=c99
4146 check_host_cflags -Wall
4147 check_host_cflags -O3
4148
4149 check_64bit(){
4150     arch32=$1
4151     arch64=$2
4152     expr=$3
4153     check_code cc "" "int test[2*($expr) - 1]" &&
4154         subarch=$arch64 || subarch=$arch32
4155 }
4156
4157 case "$arch" in
4158     aarch64|alpha|ia64)
4159         spic=$shared
4160     ;;
4161     mips)
4162         check_64bit mips mips64 '_MIPS_SIM > 1'
4163         spic=$shared
4164     ;;
4165     parisc)
4166         check_64bit parisc parisc64 'sizeof(void *) > 4'
4167         spic=$shared
4168     ;;
4169     ppc)
4170         check_64bit ppc ppc64 'sizeof(void *) > 4'
4171         spic=$shared
4172     ;;
4173     s390)
4174         check_64bit s390 s390x 'sizeof(void *) > 4'
4175         spic=$shared
4176     ;;
4177     sparc)
4178         check_64bit sparc sparc64 'sizeof(void *) > 4'
4179         spic=$shared
4180     ;;
4181     x86)
4182         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4183         # Treat x32 as x64 for now. Note it also needs spic=$shared
4184         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4185             subarch=x86_64
4186         if test "$subarch" = "x86_64"; then
4187             spic=$shared
4188         fi
4189     ;;
4190     ppc)
4191         check_cc <<EOF && subarch="ppc64"
4192         int test[(int)sizeof(char*) - 7];
4193 EOF
4194     ;;
4195 esac
4196
4197 enable $subarch
4198 enabled spic && enable_weak pic
4199
4200 # OS specific
4201 case $target_os in
4202     aix)
4203         SHFLAGS=-shared
4204         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4205         enabled shared && add_ldflags -Wl,-brtl
4206         ;;
4207     android)
4208         disable symver
4209         enable section_data_rel_ro
4210         SLIB_INSTALL_NAME='$(SLIBNAME)'
4211         SLIB_INSTALL_LINKS=
4212         # soname not set on purpose
4213         SHFLAGS=-shared
4214         ;;
4215     haiku)
4216         prefix_default="/boot/common"
4217         network_extralibs="-lnetwork"
4218         host_libs=
4219         ;;
4220     sunos)
4221         SHFLAGS='-shared -Wl,-h,$$(@F)'
4222         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4223         network_extralibs="-lsocket -lnsl"
4224         add_cppflags -D__EXTENSIONS__
4225         # When using suncc to build, the Solaris linker will mark
4226         # an executable with each instruction set encountered by
4227         # the Solaris assembler.  As our libraries contain their own
4228         # guards for processor-specific code, instead suppress
4229         # generation of the HWCAPS ELF section on Solaris x86 only.
4230         enabled_all suncc x86 &&
4231             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4232             add_ldflags -Wl,-M,mapfile
4233         nm_default='nm -P -g'
4234         ;;
4235     netbsd)
4236         disable symver
4237         oss_indev_extralibs="-lossaudio"
4238         oss_outdev_extralibs="-lossaudio"
4239         enabled gcc || check_ldflags -Wl,-zmuldefs
4240         ;;
4241     openbsd|bitrig)
4242         disable symver
4243         SHFLAGS='-shared'
4244         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4245         SLIB_INSTALL_LINKS=
4246         oss_indev_extralibs="-lossaudio"
4247         oss_outdev_extralibs="-lossaudio"
4248         ;;
4249     dragonfly)
4250         disable symver
4251         ;;
4252     freebsd)
4253         ;;
4254     bsd/os)
4255         add_extralibs -lpoll -lgnugetopt
4256         strip="strip -d"
4257         ;;
4258     darwin)
4259         enabled ppc && add_asflags -force_cpusubtype_ALL
4260         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4261         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4262         strip="${strip} -x"
4263         add_ldflags -Wl,-dynamic,-search_paths_first
4264         SLIBSUF=".dylib"
4265         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4266         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4267         objformat="macho"
4268         enabled x86_64 && objformat="macho64"
4269         enabled_any pic shared x86_64 ||
4270             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4271         ;;
4272     mingw32*)
4273         if test $target_os = "mingw32ce"; then
4274             disable network
4275         else
4276             target_os=mingw32
4277         fi
4278         LIBTARGET=i386
4279         if enabled x86_64; then
4280             LIBTARGET="i386:x86-64"
4281         elif enabled arm; then
4282             LIBTARGET=arm-wince
4283         fi
4284         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4285         check_ldflags -Wl,--nxcompat
4286         check_ldflags -Wl,--dynamicbase
4287         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4288         shlibdir_default="$bindir_default"
4289         SLIBPREF=""
4290         SLIBSUF=".dll"
4291         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4292         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4293         dlltool="${cross_prefix}dlltool"
4294         if check_cmd lib.exe -list; then
4295             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4296             if enabled x86_64; then
4297                 LIBTARGET=x64
4298             fi
4299         elif check_cmd $dlltool --version; then
4300             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4301         fi
4302         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4303         SLIB_INSTALL_LINKS=
4304         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4305         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4306         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4307         objformat="win32"
4308         ranlib=:
4309         enable dos_paths
4310         ;;
4311     win32|win64)
4312         disable symver
4313         if enabled shared; then
4314             # Link to the import library instead of the normal static library
4315             # for shared libs.
4316             LD_LIB='%.lib'
4317             # Cannot build both shared and static libs with MSVC or icl.
4318             disable static
4319         fi
4320         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4321         shlibdir_default="$bindir_default"
4322         SLIBPREF=""
4323         SLIBSUF=".dll"
4324         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4325         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4326         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4327         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4328         SLIB_INSTALL_LINKS=
4329         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4330         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4331         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4332         objformat="win32"
4333         ranlib=:
4334         enable dos_paths
4335         ;;
4336     cygwin*)
4337         target_os=cygwin
4338         shlibdir_default="$bindir_default"
4339         SLIBPREF="cyg"
4340         SLIBSUF=".dll"
4341         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4342         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4343         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4344         SLIB_INSTALL_LINKS=
4345         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4346         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4347         objformat="win32"
4348         enable dos_paths
4349         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4350         ;;
4351     *-dos|freedos|opendos)
4352         network_extralibs="-lsocket"
4353         objformat="coff"
4354         enable dos_paths
4355         add_cppflags -U__STRICT_ANSI__
4356         ;;
4357     linux)
4358         enable dv1394
4359         enable section_data_rel_ro
4360         ;;
4361     irix*)
4362         target_os=irix
4363         ranlib="echo ignoring ranlib"
4364         ;;
4365     os/2*)
4366         strip="lxlite -CS"
4367         ln_s="cp -f"
4368         objformat="aout"
4369         add_cppflags -D_GNU_SOURCE
4370         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4371         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4372         LIBSUF="_s.a"
4373         SLIBPREF=""
4374         SLIBSUF=".dll"
4375         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4376         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4377         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4378             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4379             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4380             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4381             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4382         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4383             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4384         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4385         enable dos_paths
4386         enable_weak os2threads
4387         ;;
4388     gnu/kfreebsd)
4389         add_cppflags -D_BSD_SOURCE
4390         ;;
4391     gnu)
4392         ;;
4393     qnx)
4394         add_cppflags -D_QNX_SOURCE
4395         network_extralibs="-lsocket"
4396         ;;
4397     symbian)
4398         SLIBSUF=".dll"
4399         enable dos_paths
4400         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4401         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4402         add_ldflags -Wl,--target1-abs,--no-undefined \
4403                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4404                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4405         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4406                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4407                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4408         ;;
4409     osf1)
4410         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4411         ;;
4412     minix)
4413         ;;
4414     plan9)
4415         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4416                      -D_REENTRANT_SOURCE        \
4417                      -D_RESEARCH_SOURCE         \
4418                      -DFD_SETSIZE=96            \
4419                      -DHAVE_SOCK_OPTS
4420         add_compat strtod.o strtod=avpriv_strtod
4421         network_extralibs='-lbsd'
4422         exeobjs=compat/plan9/main.o
4423         disable ffserver
4424         cp_f='cp'
4425         ;;
4426     none)
4427         ;;
4428     *)
4429         die "Unknown OS '$target_os'."
4430         ;;
4431 esac
4432
4433 # determine libc flavour
4434
4435 probe_libc(){
4436     pfx=$1
4437     pfx_no_=${pfx%_}
4438     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4439     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4440         eval ${pfx}libc_type=uclibc
4441         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4442     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4443         eval ${pfx}libc_type=glibc
4444         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4445     # MinGW headers can be installed on Cygwin, so check for newlib first.
4446     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4447         eval ${pfx}libc_type=newlib
4448         add_${pfx}cppflags -U__STRICT_ANSI__
4449     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4450     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4451         eval ${pfx}libc_type=mingw64
4452         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4453             add_compat msvcrt/snprintf.o
4454             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4455         fi
4456         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4457         eval test \$${pfx_no_}cc_type = "gcc" &&
4458             add_${pfx}cppflags -D__printf__=__gnu_printf__
4459     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4460          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4461         eval ${pfx}libc_type=mingw32
4462         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4463             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4464             die "ERROR: MinGW32 runtime version must be >= 3.15."
4465         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4466         eval test \$${pfx_no_}cc_type = "gcc" &&
4467             add_${pfx}cppflags -D__printf__=__gnu_printf__
4468     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4469         eval ${pfx}libc_type=msvcrt
4470         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4471             if [ "$pfx" = host_ ]; then
4472                 add_host_cppflags -Dsnprintf=_snprintf
4473             else
4474                 add_compat strtod.o strtod=avpriv_strtod
4475                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4476                                              _snprintf=avpriv_snprintf  \
4477                                              vsnprintf=avpriv_vsnprintf
4478             fi
4479         fi
4480         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4481         # 0x601 by default unless something else is set by the user.
4482         # This can easily lead to us detecting functions only present
4483         # in such new versions and producing binaries requiring windows 7.0.
4484         # Therefore explicitly set the default to XP unless the user has
4485         # set something else on the command line.
4486         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4487             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4488     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4489         eval ${pfx}libc_type=klibc
4490     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4491         eval ${pfx}libc_type=bionic
4492     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4493         eval ${pfx}libc_type=solaris
4494         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4495     fi
4496     check_${pfx}cc <<EOF
4497 #include <time.h>
4498 void *v = localtime_r;
4499 EOF
4500 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4501 #include <time.h>
4502 void *v = localtime_r;
4503 EOF
4504
4505 }
4506
4507 probe_libc
4508 test -n "$libc_type" && enable libc_$libc_type
4509 probe_libc host_
4510 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4511
4512 case $libc_type in
4513     bionic)
4514         add_compat strtod.o strtod=avpriv_strtod
4515         ;;
4516 esac
4517
4518 # hacks for compiler/libc/os combinations
4519
4520 if enabled_all tms470 libc_glibc; then
4521     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4522     add_cppflags -D__USER_LABEL_PREFIX__=
4523     add_cppflags -D__builtin_memset=memset
4524     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4525     add_cflags   -pds=48    # incompatible redefinition of macro
4526 fi
4527
4528 if enabled_all ccc libc_glibc; then
4529     add_ldflags -Wl,-z,now  # calls to libots crash without this
4530 fi
4531
4532 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4533     add_cppflags '-I\$(SRC_PATH)/compat/float'
4534
4535 esc(){
4536     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4537 }
4538
4539 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4540
4541 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4542
4543 set_default libdir
4544 : ${shlibdir_default:="$libdir"}
4545 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4546
4547 set_default $PATHS_LIST
4548 set_default nm
4549
4550 # we need to build at least one lib type
4551 if ! enabled_any static shared; then
4552     cat <<EOF
4553 At least one library type must be built.
4554 Specify --enable-static to build the static libraries or --enable-shared to
4555 build the shared libraries as well. To only build the shared libraries specify
4556 --disable-static in addition to --enable-shared.
4557 EOF
4558     exit 1;
4559 fi
4560
4561 die_license_disabled() {
4562     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4563 }
4564
4565 die_license_disabled_gpl() {
4566     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4567 }
4568
4569 die_license_disabled gpl frei0r
4570 die_license_disabled gpl libcdio
4571 die_license_disabled gpl libsmbclient
4572 die_license_disabled gpl libutvideo
4573 die_license_disabled gpl libvidstab
4574 die_license_disabled gpl libx264
4575 die_license_disabled gpl libx265
4576 die_license_disabled gpl libxavs
4577 die_license_disabled gpl libxvid
4578 die_license_disabled gpl libzvbi
4579 die_license_disabled gpl x11grab
4580
4581 die_license_disabled nonfree libaacplus
4582 die_license_disabled nonfree libfaac
4583 die_license_disabled nonfree nvenc
4584 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4585 enabled gpl && die_license_disabled_gpl nonfree openssl
4586
4587 die_license_disabled version3 libopencore_amrnb
4588 die_license_disabled version3 libopencore_amrwb
4589 die_license_disabled version3 libsmbclient
4590 die_license_disabled version3 libvo_aacenc
4591 die_license_disabled version3 libvo_amrwbenc
4592
4593 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4594
4595 disabled optimizations || check_cflags -fomit-frame-pointer
4596
4597 enable_weak_pic() {
4598     disabled pic && return
4599     enable pic
4600     add_cppflags -DPIC
4601     case "$target_os" in
4602     mingw*|cygwin*)
4603         ;;
4604     *)
4605         add_cflags -fPIC
4606         ;;
4607     esac
4608     add_asflags  -fPIC
4609 }
4610
4611 enabled pic && enable_weak_pic
4612
4613 check_cc <<EOF || die "Symbol mangling check failed."
4614 int ff_extern;
4615 EOF
4616 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4617 extern_prefix=${sym%%ff_extern*}
4618
4619 check_cc <<EOF && enable_weak inline_asm
4620 void foo(void) { __asm__ volatile ("" ::); }
4621 EOF
4622
4623 _restrict=
4624 for restrict_keyword in restrict __restrict__ __restrict; do
4625     check_cc <<EOF && _restrict=$restrict_keyword && break
4626 void foo(char * $restrict_keyword p);
4627 EOF
4628 done
4629
4630 check_cc <<EOF && enable pragma_deprecated
4631 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4632 EOF
4633
4634 check_cc <<EOF && enable attribute_packed
4635 struct { int x; } __attribute__((packed)) x;
4636 EOF
4637
4638 check_cc <<EOF && enable attribute_may_alias
4639 union { int x; } __attribute__((may_alias)) x;
4640 EOF
4641
4642 check_cc <<EOF || die "endian test failed"
4643 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4644 EOF
4645 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4646
4647 if ! enabled ppc64 || enabled bigendian; then
4648     disable vsx
4649 fi
4650
4651 check_gas() {
4652     log "check_gas using '$as' as AS"
4653     # :vararg is used on aarch64, arm and ppc altivec
4654     check_as <<EOF || return 1
4655 .macro m n, y:vararg=0
4656 \n: .int \y
4657 .endm
4658 m x
4659 EOF
4660     # .altmacro is only used in arm asm
4661     ! enabled arm || check_as <<EOF || return 1
4662 .altmacro
4663 EOF
4664     enable gnu_as
4665     return 0
4666 }
4667
4668 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4669     nogas=:
4670     enabled_any arm aarch64 && nogas=die
4671     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4672     as_noop=-v
4673
4674     case $as_type in
4675         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4676         gcc)  gaspp_as_type=gas ;;
4677         *)    gaspp_as_type=$as_type ;;
4678     esac
4679
4680     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4681
4682     test "${as#*gas-preprocessor.pl}" != "$as" ||
4683     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4684         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4685
4686     if ! check_gas ; then
4687         as=${gas:=$as}
4688         check_gas || \
4689             $nogas "GNU assembler not found, install/update gas-preprocessor"
4690     fi
4691
4692     check_as <<EOF && enable as_func
4693 .func test
4694 .endfunc
4695 EOF
4696 fi
4697
4698 check_inline_asm inline_asm_labels '"1:\n"'
4699
4700 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4701
4702 if enabled aarch64; then
4703     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4704     # internal assembler in clang 3.3 does not support this instruction
4705     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4706     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4707
4708     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4709
4710 elif enabled alpha; then
4711
4712     check_cflags -mieee
4713
4714 elif enabled arm; then
4715
4716     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4717 float func(float a, float b){ return a+b; }
4718 EOF
4719
4720     enabled thumb && check_cflags -mthumb || check_cflags -marm
4721
4722     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4723         enable vfp_args
4724     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4725         case "${cross_prefix:-$cc}" in
4726             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4727             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4728 __asm__ (".eabi_attribute 28, 1");
4729 int main(void) { return 0; }
4730 EOF
4731         esac
4732         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4733     fi
4734
4735     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4736     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4737     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4738     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4739     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4740     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4741     enabled setend  && check_insn setend  'setend be'
4742
4743     [ $target_os = linux ] || [ $target_os = android ] ||
4744         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4745             $ARCH_EXT_LIST_ARM
4746
4747     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4748
4749     check_as <<EOF && enable as_dn_directive
4750 ra .dn d0.i16
4751 .unreq ra
4752 EOF
4753
4754     # llvm's integrated assembler supports .object_arch from llvm 3.5
4755     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4756 .object_arch armv4
4757 EOF
4758
4759     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4760
4761 elif enabled mips; then
4762
4763     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4764     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4765     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4766
4767     # Enable minimum ISA based on selected options
4768     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4769         add_cflags "-mips64r2"
4770         add_asflags "-mips64r2"
4771     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4772         add_cflags "-mips64"
4773         add_asflags "-mips64"
4774     elif enabled mipsdspr1 || enabled mipsdspr2; then
4775         add_cflags "-mips32r2 -mfp32"
4776         add_asflags "-mips32r2 -mfp32"
4777     elif enabled mips32r5 || enabled mips64r6; then
4778         check_cflags "-mfp64"
4779         check_ldflags "-mfp64"
4780     fi
4781
4782     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4783      check_ldflags "-mips32r5" &&
4784      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4785     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4786      check_ldflags "-mips64r6" &&
4787      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4788     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4789      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4790     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4791      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4792     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4793      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4794     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4795      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4796
4797     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4798     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4799     enabled msa && add_asflags "-mmsa"
4800
4801 elif enabled parisc; then
4802
4803     if enabled gcc; then
4804         case $($cc -dumpversion) in
4805             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4806         esac
4807     fi
4808
4809 elif enabled ppc; then
4810
4811     enable local_aligned_8 local_aligned_16 local_aligned_32
4812
4813     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4814     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4815     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4816     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4817
4818     # AltiVec flags: The FSF version of GCC differs from the Apple version
4819     if enabled altivec; then
4820         check_cflags -maltivec -mabi=altivec &&
4821         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4822         check_cflags -faltivec
4823
4824         # check if our compiler supports Motorola AltiVec C API
4825         check_cc <<EOF || disable altivec
4826 $inc_altivec_h
4827 int main(void) {
4828     vector signed int v1 = (vector signed int) { 0 };
4829     vector signed int v2 = (vector signed int) { 1 };
4830     v1 = vec_add(v1, v2);
4831     return 0;
4832 }
4833 EOF
4834
4835         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4836     fi
4837
4838     if enabled vsx; then
4839         check_cflags -mvsx &&
4840         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4841     fi
4842
4843     if enabled power8; then
4844         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4845     fi
4846
4847 elif enabled x86; then
4848
4849     check_builtin rdtsc    intrin.h   "__rdtsc()"
4850     check_builtin mm_empty mmintrin.h "_mm_empty()"
4851
4852     enable local_aligned_8 local_aligned_16 local_aligned_32
4853
4854     # check whether EBP is available on x86
4855     # As 'i' is stored on the stack, this program will crash
4856     # if the base pointer is used to access it because the
4857     # base pointer is cleared in the inline assembly code.
4858     check_exec_crash <<EOF && enable ebp_available
4859 volatile int i=0;
4860 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4861 return i;
4862 EOF
4863
4864     # check whether EBX is available on x86
4865     check_inline_asm ebx_available '""::"b"(0)' &&
4866         check_inline_asm ebx_available '"":::"%ebx"'
4867
4868     # check whether xmm clobbers are supported
4869     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4870
4871     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4872         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'