avformat/file: Check for lstat() instead of dirent.h
[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   --enable-videotoolbox    enable VideoToolbox code [autodetect]
159
160 Individual component options:
161   --disable-everything     disable all components listed below
162   --disable-encoder=NAME   disable encoder NAME
163   --enable-encoder=NAME    enable encoder NAME
164   --disable-encoders       disable all encoders
165   --disable-decoder=NAME   disable decoder NAME
166   --enable-decoder=NAME    enable decoder NAME
167   --disable-decoders       disable all decoders
168   --disable-hwaccel=NAME   disable hwaccel NAME
169   --enable-hwaccel=NAME    enable hwaccel NAME
170   --disable-hwaccels       disable all hwaccels
171   --disable-muxer=NAME     disable muxer NAME
172   --enable-muxer=NAME      enable muxer NAME
173   --disable-muxers         disable all muxers
174   --disable-demuxer=NAME   disable demuxer NAME
175   --enable-demuxer=NAME    enable demuxer NAME
176   --disable-demuxers       disable all demuxers
177   --enable-parser=NAME     enable parser NAME
178   --disable-parser=NAME    disable parser NAME
179   --disable-parsers        disable all parsers
180   --enable-bsf=NAME        enable bitstream filter NAME
181   --disable-bsf=NAME       disable bitstream filter NAME
182   --disable-bsfs           disable all bitstream filters
183   --enable-protocol=NAME   enable protocol NAME
184   --disable-protocol=NAME  disable protocol NAME
185   --disable-protocols      disable all protocols
186   --enable-indev=NAME      enable input device NAME
187   --disable-indev=NAME     disable input device NAME
188   --disable-indevs         disable input devices
189   --enable-outdev=NAME     enable output device NAME
190   --disable-outdev=NAME    disable output device NAME
191   --disable-outdevs        disable output devices
192   --disable-devices        disable all devices
193   --enable-filter=NAME     enable filter NAME
194   --disable-filter=NAME    disable filter NAME
195   --disable-filters        disable all filters
196
197 External library support:
198   --enable-avisynth        enable reading of AviSynth script files [no]
199   --disable-bzlib          disable bzlib [autodetect]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gnutls          enable gnutls, needed for https support
203                            if openssl is not used [no]
204   --disable-iconv          disable iconv [autodetect]
205   --enable-ladspa          enable LADSPA audio filtering [no]
206   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
207   --enable-libass          enable libass subtitles rendering,
208                            needed for subtitles and ass filter [no]
209   --enable-libbluray       enable BluRay reading using libbluray [no]
210   --enable-libbs2b         enable bs2b DSP library [no]
211   --enable-libcaca         enable textual display using libcaca [no]
212   --enable-libcelt         enable CELT decoding via libcelt [no]
213   --enable-libcdio         enable audio CD grabbing with libcdio [no]
214   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
215                            and libraw1394 [no]
216   --enable-libdcadec       enable DCA decoding via libdcadec [no]
217   --enable-libfaac         enable AAC encoding via libfaac [no]
218   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
219   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
220   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
221   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
222   --enable-libgme          enable Game Music Emu via libgme [no]
223   --enable-libgsm          enable GSM de/encoding via libgsm [no]
224   --enable-libiec61883     enable iec61883 via libiec61883 [no]
225   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
226   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
227   --enable-libmfx          enable HW acceleration through libmfx
228   --enable-libmodplug      enable ModPlug via libmodplug [no]
229   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
230   --enable-libnut          enable NUT (de)muxing via libnut,
231                            native (de)muxer exists [no]
232   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
233   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
234   --enable-libopencv       enable video filtering via libopencv [no]
235   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
236   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
237   --enable-libopus         enable Opus de/encoding via libopus [no]
238   --enable-libpulse        enable Pulseaudio input via libpulse [no]
239   --enable-libquvi         enable quvi input via libquvi [no]
240   --enable-librtmp         enable RTMP[E] support via librtmp [no]
241   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
242   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
243   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
244   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
245   --enable-libsoxr         enable Include libsoxr resampling [no]
246   --enable-libspeex        enable Speex de/encoding via libspeex [no]
247   --enable-libssh          enable SFTP protocol via libssh [no]
248   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
249   --enable-libtheora       enable Theora encoding via libtheora [no]
250   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
251   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
252   --enable-libv4l2         enable libv4l2/v4l-utils [no]
253   --enable-libvidstab      enable video stabilization using vid.stab [no]
254   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
255   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
256   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
257                            native implementation exists [no]
258   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
259   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
260   --enable-libwebp         enable WebP encoding via libwebp [no]
261   --enable-libx264         enable H.264 encoding via x264 [no]
262   --enable-libx265         enable HEVC encoding via x265 [no]
263   --enable-libxavs         enable AVS encoding via xavs [no]
264   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
265   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
266   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
267   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
268   --enable-libxvid         enable Xvid encoding via xvidcore,
269                            native MPEG-4/Xvid encoder exists [no]
270   --enable-libzmq          enable message passing via libzmq [no]
271   --enable-libzvbi         enable teletext support via libzvbi [no]
272   --disable-lzma           disable lzma [autodetect]
273   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
274   --enable-mmal            enable decoding via MMAL [no]
275   --enable-nvenc           enable NVIDIA NVENC support [no]
276   --enable-openal          enable OpenAL 1.1 capture support [no]
277   --enable-opencl          enable OpenCL code
278   --enable-opengl          enable OpenGL rendering [no]
279   --enable-openssl         enable openssl, needed for https support
280                            if gnutls is not used [no]
281   --disable-sdl            disable sdl [autodetect]
282   --disable-securetransport disable Secure Transport, needed for TLS support
283                            on OSX if openssl and gnutls are not used [autodetect]
284   --enable-x11grab         enable X11 grabbing (legacy) [no]
285   --disable-xlib           disable xlib [autodetect]
286   --disable-zlib           disable zlib [autodetect]
287
288 Toolchain options:
289   --arch=ARCH              select architecture [$arch]
290   --cpu=CPU                select the minimum required CPU (affects
291                            instruction selection, may crash on older CPUs)
292   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
293   --progs-suffix=SUFFIX    program name suffix []
294   --enable-cross-compile   assume a cross-compiler is used
295   --sysroot=PATH           root of cross-build tree
296   --sysinclude=PATH        location of cross-build system headers
297   --target-os=OS           compiler targets OS [$target_os]
298   --target-exec=CMD        command to run executables on target
299   --target-path=DIR        path to view of build directory on target
300   --target-samples=DIR     path to samples directory on target
301   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
302   --toolchain=NAME         set tool defaults according to NAME
303   --nm=NM                  use nm tool NM [$nm_default]
304   --ar=AR                  use archive tool AR [$ar_default]
305   --as=AS                  use assembler AS [$as_default]
306   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
307   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
308   --cc=CC                  use C compiler CC [$cc_default]
309   --cxx=CXX                use C compiler CXX [$cxx_default]
310   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
311   --ld=LD                  use linker LD [$ld_default]
312   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
313   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
314   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
315   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
316   --host-cc=HOSTCC         use host C compiler HOSTCC
317   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
318   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
319   --host-ld=HOSTLD         use host linker HOSTLD
320   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
321   --host-libs=HLIBS        use libs HLIBS when linking for host
322   --host-os=OS             compiler host OS [$target_os]
323   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
324   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
325   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
326   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
327   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
328   --extra-libs=ELIBS       add ELIBS [$ELIBS]
329   --extra-version=STRING   version string suffix []
330   --optflags=OPTFLAGS      override optimization-related compiler flags
331   --build-suffix=SUFFIX    library name suffix []
332   --enable-pic             build position-independent code
333   --enable-thumb           compile for Thumb instruction set
334   --enable-lto             use link-time optimization
335   --env="ENV=override"     override the environment variables
336
337 Advanced options (experts only):
338   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
339   --disable-symver         disable symbol versioning
340   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
341   --disable-safe-bitstream-reader
342                            disable buffer boundary checking in bitreaders
343                            (faster, but may crash)
344   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
345   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
346
347 Optimization options (experts only):
348   --disable-asm            disable all assembly optimizations
349   --disable-altivec        disable AltiVec optimizations
350   --disable-vsx            disable VSX optimizations
351   --disable-power8         disable POWER8 optimizations
352   --disable-amd3dnow       disable 3DNow! optimizations
353   --disable-amd3dnowext    disable 3DNow! extended optimizations
354   --disable-mmx            disable MMX optimizations
355   --disable-mmxext         disable MMXEXT optimizations
356   --disable-sse            disable SSE optimizations
357   --disable-sse2           disable SSE2 optimizations
358   --disable-sse3           disable SSE3 optimizations
359   --disable-ssse3          disable SSSE3 optimizations
360   --disable-sse4           disable SSE4 optimizations
361   --disable-sse42          disable SSE4.2 optimizations
362   --disable-avx            disable AVX optimizations
363   --disable-xop            disable XOP optimizations
364   --disable-fma3           disable FMA3 optimizations
365   --disable-fma4           disable FMA4 optimizations
366   --disable-avx2           disable AVX2 optimizations
367   --disable-armv5te        disable armv5te optimizations
368   --disable-armv6          disable armv6 optimizations
369   --disable-armv6t2        disable armv6t2 optimizations
370   --disable-vfp            disable VFP optimizations
371   --disable-neon           disable NEON optimizations
372   --disable-inline-asm     disable use of inline assembly
373   --disable-yasm           disable use of nasm/yasm assembly
374   --disable-mips32r5       disable MIPS32R5 optimizations
375   --disable-mips64r6       disable MIPS64R6 optimizations
376   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
377   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
378   --disable-msa            disable MSA optimizations
379   --disable-mipsfpu        disable floating point MIPS optimizations
380   --disable-mmi            disable Loongson SIMD optimizations
381   --disable-fast-unaligned consider unaligned accesses slow
382
383 Developer options (useful when working on FFmpeg itself):
384   --disable-debug          disable debugging symbols
385   --enable-debug=LEVEL     set the debug level [$debuglevel]
386   --disable-optimizations  disable compiler optimizations
387   --enable-extra-warnings  enable more compiler warnings
388   --disable-stripping      disable stripping of executables and shared libraries
389   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
390                            2 causes a slowdown at runtime.
391   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
392   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
393                            leaks and errors, using the specified valgrind binary.
394                            Cannot be combined with --target-exec
395   --enable-ftrapv          Trap arithmetic overflows
396   --samples=PATH           location of test samples for FATE, if not set use
397                            \$FATE_SAMPLES at make invocation time.
398   --enable-neon-clobber-test check NEON registers for clobbering (should be
399                            used only for debugging purposes)
400   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
401                            should be used only for debugging purposes)
402   --enable-random          randomly enable/disable components
403   --disable-random
404   --enable-random=LIST     randomly enable/disable specific components or
405   --disable-random=LIST    component groups. LIST is a comma-separated list
406                            of NAME[:PROB] entries where NAME is a component
407                            (group) and PROB the probability associated with
408                            NAME (default 0.5).
409   --random-seed=VALUE      seed value for --enable/disable-random
410   --disable-valgrind-backtrace do not print a backtrace under Valgrind
411                            (only applies to --disable-optimizations builds)
412
413 NOTE: Object files are built at the place where configure is launched.
414 EOF
415   exit 0
416 }
417
418 quotes='""'
419
420 log(){
421     echo "$@" >> $logfile
422 }
423
424 log_file(){
425     log BEGIN $1
426     pr -n -t $1 >> $logfile
427     log END $1
428 }
429
430 echolog(){
431     log "$@"
432     echo "$@"
433 }
434
435 warn(){
436     log "WARNING: $*"
437     WARNINGS="${WARNINGS}WARNING: $*\n"
438 }
439
440 die(){
441     echolog "$@"
442     cat <<EOF
443
444 If you think configure made a mistake, make sure you are using the latest
445 version from Git.  If the latest version fails, report the problem to the
446 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
447 EOF
448     if disabled logging; then
449         cat <<EOF
450 Rerun configure with logging enabled (do not use --disable-logging), and
451 include the log this produces with your report.
452 EOF
453     else
454         cat <<EOF
455 Include the log file "$logfile" produced by configure as this will help
456 solve the problem.
457 EOF
458     fi
459     exit 1
460 }
461
462 # Avoid locale weirdness, besides we really just want to translate ASCII.
463 toupper(){
464     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
465 }
466
467 tolower(){
468     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
469 }
470
471 c_escape(){
472     echo "$*" | sed 's/["\\]/\\\0/g'
473 }
474
475 sh_quote(){
476     v=$(echo "$1" | sed "s/'/'\\\\''/g")
477     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
478     echo "$v"
479 }
480
481 cleanws(){
482     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
483 }
484
485 filter(){
486     pat=$1
487     shift
488     for v; do
489         eval "case $v in $pat) echo $v ;; esac"
490     done
491 }
492
493 filter_out(){
494     pat=$1
495     shift
496     for v; do
497         eval "case $v in $pat) ;; *) echo $v ;; esac"
498     done
499 }
500
501 map(){
502     m=$1
503     shift
504     for v; do eval $m; done
505 }
506
507 add_suffix(){
508     suffix=$1
509     shift
510     for v; do echo ${v}${suffix}; done
511 }
512
513 set_all(){
514     value=$1
515     shift
516     for var in $*; do
517         eval $var=$value
518     done
519 }
520
521 set_weak(){
522     value=$1
523     shift
524     for var; do
525         eval : \${$var:=$value}
526     done
527 }
528
529 sanitize_var_name(){
530     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
531 }
532
533 set_safe(){
534     var=$1
535     shift
536     eval $(sanitize_var_name "$var")='$*'
537 }
538
539 get_safe(){
540     eval echo \$$(sanitize_var_name "$1")
541 }
542
543 pushvar(){
544     for pvar in $*; do
545         eval level=\${${pvar}_level:=0}
546         eval ${pvar}_${level}="\$$pvar"
547         eval ${pvar}_level=$(($level+1))
548     done
549 }
550
551 popvar(){
552     for pvar in $*; do
553         eval level=\${${pvar}_level:-0}
554         test $level = 0 && continue
555         eval level=$(($level-1))
556         eval $pvar="\${${pvar}_${level}}"
557         eval ${pvar}_level=$level
558         eval unset ${pvar}_${level}
559     done
560 }
561
562 enable(){
563     set_all yes $*
564 }
565
566 disable(){
567     set_all no $*
568 }
569
570 enable_weak(){
571     set_weak yes $*
572 }
573
574 disable_weak(){
575     set_weak no $*
576 }
577
578 enable_safe(){
579     for var; do
580         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
581     done
582 }
583
584 disable_safe(){
585     for var; do
586         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
587     done
588 }
589
590 do_enable_deep(){
591     for var; do
592         enabled $var && continue
593         eval sel="\$${var}_select"
594         eval sgs="\$${var}_suggest"
595         pushvar var sgs
596         enable_deep $sel
597         popvar sgs
598         enable_deep_weak $sgs
599         popvar var
600     done
601 }
602
603 enable_deep(){
604     do_enable_deep $*
605     enable $*
606 }
607
608 enable_deep_weak(){
609     for var; do
610         disabled $var && continue
611         pushvar var
612         do_enable_deep $var
613         popvar var
614         enable_weak $var
615     done
616 }
617
618 enabled(){
619     test "${1#!}" = "$1" && op== || op=!=
620     eval test "x\$${1#!}" $op "xyes"
621 }
622
623 disabled(){
624     test "${1#!}" = "$1" && op== || op=!=
625     eval test "x\$${1#!}" $op "xno"
626 }
627
628 enabled_all(){
629     for opt; do
630         enabled $opt || return 1
631     done
632 }
633
634 disabled_all(){
635     for opt; do
636         disabled $opt || return 1
637     done
638 }
639
640 enabled_any(){
641     for opt; do
642         enabled $opt && return 0
643     done
644 }
645
646 disabled_any(){
647     for opt; do
648         disabled $opt && return 0
649     done
650     return 1
651 }
652
653 set_default(){
654     for opt; do
655         eval : \${$opt:=\$${opt}_default}
656     done
657 }
658
659 is_in(){
660     value=$1
661     shift
662     for var in $*; do
663         [ $var = $value ] && return 0
664     done
665     return 1
666 }
667
668 do_check_deps(){
669     for cfg; do
670         cfg="${cfg#!}"
671         enabled ${cfg}_checking && die "Circular dependency for $cfg."
672         disabled ${cfg}_checking && continue
673         enable ${cfg}_checking
674         append allopts $cfg
675
676         eval dep_all="\$${cfg}_deps"
677         eval dep_any="\$${cfg}_deps_any"
678         eval dep_sel="\$${cfg}_select"
679         eval dep_sgs="\$${cfg}_suggest"
680         eval dep_ifa="\$${cfg}_if"
681         eval dep_ifn="\$${cfg}_if_any"
682
683         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
684         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
685         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
686
687         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
688         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
689         enabled_all  $dep_all || disable $cfg
690         enabled_any  $dep_any || disable $cfg
691         disabled_any $dep_sel && disable $cfg
692
693         if enabled $cfg; then
694             enable_deep $dep_sel
695             enable_deep_weak $dep_sgs
696         fi
697
698         disable ${cfg}_checking
699     done
700 }
701
702 check_deps(){
703     unset allopts
704
705     do_check_deps "$@"
706
707     for cfg in $allopts; do
708         enabled $cfg || continue
709         eval dep_extralibs="\$${cfg}_extralibs"
710         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
711     done
712 }
713
714 print_config(){
715     pfx=$1
716     files=$2
717     shift 2
718     map 'eval echo "$v \${$v:-no}"' "$@" |
719     awk "BEGIN { split(\"$files\", files) }
720         {
721             c = \"$pfx\" toupper(\$1);
722             v = \$2;
723             sub(/yes/, 1, v);
724             sub(/no/,  0, v);
725             for (f in files) {
726                 file = files[f];
727                 if (file ~ /\\.h\$/) {
728                     printf(\"#define %s %d\\n\", c, v) >>file;
729                 } else if (file ~ /\\.asm\$/) {
730                     printf(\"%%define %s %d\\n\", c, v) >>file;
731                 } else if (file ~ /\\.mak\$/) {
732                     n = -v ? \"\" : \"!\";
733                     printf(\"%s%s=yes\\n\", n, c) >>file;
734                 } else if (file ~ /\\.texi\$/) {
735                     pre = -v ? \"\" : \"@c \";
736                     yesno = \$2;
737                     c2 = tolower(c);
738                     gsub(/_/, \"-\", c2);
739                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
740                 }
741             }
742         }"
743 }
744
745 print_enabled(){
746     suf=$1
747     shift
748     for v; do
749         enabled $v && printf "%s\n" ${v%$suf};
750     done
751 }
752
753 append(){
754     var=$1
755     shift
756     eval "$var=\"\$$var $*\""
757 }
758
759 prepend(){
760     var=$1
761     shift
762     eval "$var=\"$* \$$var\""
763 }
764
765 unique(){
766     var=$1
767     uniq_list=""
768     for tok in $(eval echo \$$var); do
769         uniq_list="$(filter_out $tok $uniq_list) $tok"
770     done
771     eval "$var=\"${uniq_list}\""
772 }
773
774 add_cppflags(){
775     append CPPFLAGS "$@"
776 }
777
778 add_cflags(){
779     append CFLAGS $($cflags_filter "$@")
780 }
781
782 add_cxxflags(){
783     append CXXFLAGS $($cflags_filter "$@")
784 }
785
786 add_asflags(){
787     append ASFLAGS $($asflags_filter "$@")
788 }
789
790 add_ldflags(){
791     append LDFLAGS $($ldflags_filter "$@")
792 }
793
794 add_ldexeflags(){
795     append LDEXEFLAGS $($ldflags_filter "$@")
796 }
797
798 add_ldlibflags(){
799     append LDLIBFLAGS $($ldflags_filter "$@")
800 }
801
802 add_stripflags(){
803     append ASMSTRIPFLAGS "$@"
804 }
805
806 add_extralibs(){
807     prepend extralibs $($ldflags_filter "$@")
808 }
809
810 add_host_cppflags(){
811     append host_cppflags "$@"
812 }
813
814 add_host_cflags(){
815     append host_cflags $($host_cflags_filter "$@")
816 }
817
818 add_host_ldflags(){
819     append host_ldflags $($host_ldflags_filter "$@")
820 }
821
822 add_compat(){
823     append compat_objs $1
824     shift
825     map 'add_cppflags -D$v' "$@"
826 }
827
828 check_cmd(){
829     log "$@"
830     "$@" >> $logfile 2>&1
831 }
832
833 check_stat(){
834     log check_stat "$@"
835     stat "$1" >> $logfile 2>&1
836 }
837
838 cc_o(){
839     eval printf '%s\\n' $CC_O
840 }
841
842 cc_e(){
843     eval printf '%s\\n' $CC_E
844 }
845
846 check_cc(){
847     log check_cc "$@"
848     cat > $TMPC
849     log_file $TMPC
850     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
851 }
852
853 check_cxx(){
854     log check_cxx "$@"
855     cat > $TMPCPP
856     log_file $TMPCPP
857     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
858 }
859
860 check_oc(){
861     log check_oc "$@"
862     cat > $TMPM
863     log_file $TMPM
864     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
865 }
866
867 check_cpp(){
868     log check_cpp "$@"
869     cat > $TMPC
870     log_file $TMPC
871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
872 }
873
874 as_o(){
875     eval printf '%s\\n' $AS_O
876 }
877
878 check_as(){
879     log check_as "$@"
880     cat > $TMPS
881     log_file $TMPS
882     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
883 }
884
885 check_inline_asm(){
886     log check_inline_asm "$@"
887     name="$1"
888     code="$2"
889     shift 2
890     disable $name
891     check_cc "$@" <<EOF && enable $name
892 void foo(void){ __asm__ volatile($code); }
893 EOF
894 }
895
896 check_insn(){
897     log check_insn "$@"
898     check_inline_asm ${1}_inline "\"$2\""
899     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
900 }
901
902 check_yasm(){
903     log check_yasm "$@"
904     echo "$1" > $TMPS
905     log_file $TMPS
906     shift 1
907     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
908 }
909
910 ld_o(){
911     eval printf '%s\\n' $LD_O
912 }
913
914 check_ld(){
915     log check_ld "$@"
916     type=$1
917     shift 1
918     flags=$(filter_out '-l*|*.so' $@)
919     libs=$(filter '-l*|*.so' $@)
920     check_$type $($cflags_filter $flags) || return
921     flags=$($ldflags_filter $flags)
922     libs=$($ldflags_filter $libs)
923     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
924 }
925
926 print_include(){
927     hdr=$1
928     test "${hdr%.h}" = "${hdr}" &&
929         echo "#include $hdr"    ||
930         echo "#include <$hdr>"
931 }
932
933 check_code(){
934     log check_code "$@"
935     check=$1
936     headers=$2
937     code=$3
938     shift 3
939     {
940         for hdr in $headers; do
941             print_include $hdr
942         done
943         echo "int main(void) { $code; return 0; }"
944     } | check_$check "$@"
945 }
946
947 check_cppflags(){
948     log check_cppflags "$@"
949     check_cc "$@" <<EOF && append CPPFLAGS "$@"
950 int x;
951 EOF
952 }
953
954 test_cflags(){
955     log test_cflags "$@"
956     set -- $($cflags_filter "$@")
957     check_cc "$@" <<EOF
958 int x;
959 EOF
960 }
961
962 check_cflags(){
963     log check_cflags "$@"
964     test_cflags "$@" && add_cflags "$@"
965 }
966
967 check_cxxflags(){
968     log check_cxxflags "$@"
969     set -- $($cflags_filter "$@")
970     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
971 int x;
972 EOF
973 }
974
975 test_ldflags(){
976     log test_ldflags "$@"
977     check_ld "cc" "$@" <<EOF
978 int main(void){ return 0; }
979 EOF
980 }
981
982 check_ldflags(){
983     log check_ldflags "$@"
984     test_ldflags "$@" && add_ldflags "$@"
985 }
986
987 test_stripflags(){
988     log test_stripflags "$@"
989     # call check_cc to get a fresh TMPO
990     check_cc <<EOF
991 int main(void) { return 0; }
992 EOF
993     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
994 }
995
996 check_stripflags(){
997     log check_stripflags "$@"
998     test_stripflags "$@" && add_stripflags "$@"
999 }
1000
1001 check_header(){
1002     log check_header "$@"
1003     header=$1
1004     shift
1005     disable_safe $header
1006     check_cpp "$@" <<EOF && enable_safe $header
1007 #include <$header>
1008 int x;
1009 EOF
1010 }
1011
1012 check_header_oc(){
1013     log check_header_oc "$@"
1014     rm -f -- "$TMPO"
1015     header=$1
1016     shift
1017     disable_safe $header
1018     {
1019        echo "#include <$header>"
1020        echo "int main(void) { return 0; }"
1021     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1022 }
1023
1024 check_func(){
1025     log check_func "$@"
1026     func=$1
1027     shift
1028     disable $func
1029     check_ld "cc" "$@" <<EOF && enable $func
1030 extern int $func();
1031 int main(void){ $func(); }
1032 EOF
1033 }
1034
1035 check_mathfunc(){
1036     log check_mathfunc "$@"
1037     func=$1
1038     narg=$2
1039     shift 2
1040     test $narg = 2 && args="f, g" || args="f"
1041     disable $func
1042     check_ld "cc" "$@" <<EOF && enable $func
1043 #include <math.h>
1044 float foo(float f, float g) { return $func($args); }
1045 int main(void){ return (int) foo; }
1046 EOF
1047 }
1048
1049 check_func_headers(){
1050     log check_func_headers "$@"
1051     headers=$1
1052     funcs=$2
1053     shift 2
1054     {
1055         for hdr in $headers; do
1056             print_include $hdr
1057         done
1058         for func in $funcs; do
1059             echo "long check_$func(void) { return (long) $func; }"
1060         done
1061         echo "int main(void) { return 0; }"
1062     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1063 }
1064
1065 check_class_headers_cpp(){
1066     log check_class_headers_cpp "$@"
1067     headers=$1
1068     classes=$2
1069     shift 2
1070     {
1071         for hdr in $headers; do
1072             echo "#include <$hdr>"
1073         done
1074         echo "int main(void) { "
1075         i=1
1076         for class in $classes; do
1077             echo "$class obj$i;"
1078             i=$(expr $i + 1)
1079         done
1080         echo "return 0; }"
1081     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1082 }
1083
1084 check_cpp_condition(){
1085     log check_cpp_condition "$@"
1086     header=$1
1087     condition=$2
1088     shift 2
1089     check_cpp "$@" <<EOF
1090 #include <$header>
1091 #if !($condition)
1092 #error "unsatisfied condition: $condition"
1093 #endif
1094 EOF
1095 }
1096
1097 check_lib(){
1098     log check_lib "$@"
1099     header="$1"
1100     func="$2"
1101     shift 2
1102     check_header $header && check_func $func "$@" && add_extralibs "$@"
1103 }
1104
1105 check_lib2(){
1106     log check_lib2 "$@"
1107     headers="$1"
1108     funcs="$2"
1109     shift 2
1110     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1111 }
1112
1113 check_lib_cpp(){
1114     log check_lib_cpp "$@"
1115     headers="$1"
1116     classes="$2"
1117     shift 2
1118     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1119 }
1120
1121 check_pkg_config(){
1122     log check_pkg_config "$@"
1123     pkgandversion="$1"
1124     pkg="${1%% *}"
1125     headers="$2"
1126     funcs="$3"
1127     shift 3
1128     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1129     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1130     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1131     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1132         set_safe "${pkg}_cflags" $pkg_cflags   &&
1133         set_safe "${pkg}_libs"   $pkg_libs
1134 }
1135
1136 check_exec(){
1137     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1138 }
1139
1140 check_exec_crash(){
1141     code=$(cat)
1142
1143     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1144     # are safe but may not be available everywhere.  Thus we use
1145     # raise(SIGTERM) instead.  The check is run in a subshell so we
1146     # can redirect the "Terminated" message from the shell.  SIGBUS
1147     # is not defined by standard C so it is used conditionally.
1148
1149     (check_exec "$@") >> $logfile 2>&1 <<EOF
1150 #include <signal.h>
1151 static void sighandler(int sig){
1152     raise(SIGTERM);
1153 }
1154 int foo(void){
1155     $code
1156 }
1157 int (*func_ptr)(void) = foo;
1158 int main(void){
1159     signal(SIGILL, sighandler);
1160     signal(SIGFPE, sighandler);
1161     signal(SIGSEGV, sighandler);
1162 #ifdef SIGBUS
1163     signal(SIGBUS, sighandler);
1164 #endif
1165     return func_ptr();
1166 }
1167 EOF
1168 }
1169
1170 check_type(){
1171     log check_type "$@"
1172     headers=$1
1173     type=$2
1174     shift 2
1175     disable_safe "$type"
1176     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1177 }
1178
1179 check_struct(){
1180     log check_struct "$@"
1181     headers=$1
1182     struct=$2
1183     member=$3
1184     shift 3
1185     disable_safe "${struct}_${member}"
1186     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1187         enable_safe "${struct}_${member}"
1188 }
1189
1190 check_builtin(){
1191     log check_builtin "$@"
1192     name=$1
1193     headers=$2
1194     builtin=$3
1195     shift 3
1196     disable "$name"
1197     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1198 }
1199
1200 check_compile_assert(){
1201     log check_compile_assert "$@"
1202     name=$1
1203     headers=$2
1204     condition=$3
1205     shift 3
1206     disable "$name"
1207     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1208 }
1209
1210 require(){
1211     name="$1"
1212     header="$2"
1213     func="$3"
1214     shift 3
1215     check_lib $header $func "$@" || die "ERROR: $name not found"
1216 }
1217
1218 require2(){
1219     name="$1"
1220     headers="$2"
1221     func="$3"
1222     shift 3
1223     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1224 }
1225
1226 require_cpp(){
1227     name="$1"
1228     headers="$2"
1229     classes="$3"
1230     shift 3
1231     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1232 }
1233
1234 use_pkg_config(){
1235     pkg="$1"
1236     check_pkg_config "$@" || return 1
1237     add_cflags    $(get_safe "${pkg}_cflags")
1238     add_extralibs $(get_safe "${pkg}_libs")
1239 }
1240
1241 require_pkg_config(){
1242     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1243 }
1244
1245 require_libfreetype(){
1246     log require_libfreetype "$@"
1247     pkg="freetype2"
1248     check_cmd $pkg_config --exists --print-errors $pkg \
1249       || die "ERROR: $pkg not found"
1250     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1251     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1252     {
1253         echo "#include <ft2build.h>"
1254         echo "#include FT_FREETYPE_H"
1255         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1256         echo "int main(void) { return 0; }"
1257     } | check_ld "cc" $pkg_cflags $pkg_libs \
1258       && set_safe "${pkg}_cflags" $pkg_cflags \
1259       && set_safe "${pkg}_libs"   $pkg_libs \
1260       || die "ERROR: $pkg not found"
1261     add_cflags    $(get_safe "${pkg}_cflags")
1262     add_extralibs $(get_safe "${pkg}_libs")
1263 }
1264
1265 hostcc_e(){
1266     eval printf '%s\\n' $HOSTCC_E
1267 }
1268
1269 hostcc_o(){
1270     eval printf '%s\\n' $HOSTCC_O
1271 }
1272
1273 check_host_cc(){
1274     log check_host_cc "$@"
1275     cat > $TMPC
1276     log_file $TMPC
1277     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1278 }
1279
1280 check_host_cpp(){
1281     log check_host_cpp "$@"
1282     cat > $TMPC
1283     log_file $TMPC
1284     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1285 }
1286
1287 check_host_cppflags(){
1288     log check_host_cppflags "$@"
1289     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1290 int x;
1291 EOF
1292 }
1293
1294 check_host_cflags(){
1295     log check_host_cflags "$@"
1296     set -- $($host_cflags_filter "$@")
1297     check_host_cc "$@" <<EOF && append host_cflags "$@"
1298 int x;
1299 EOF
1300 }
1301
1302 check_host_cpp_condition(){
1303     log check_host_cpp_condition "$@"
1304     header=$1
1305     condition=$2
1306     shift 2
1307     check_host_cpp "$@" <<EOF
1308 #include <$header>
1309 #if !($condition)
1310 #error "unsatisfied condition: $condition"
1311 #endif
1312 EOF
1313 }
1314
1315 apply(){
1316     file=$1
1317     shift
1318     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1319 }
1320
1321 cp_if_changed(){
1322     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1323     mkdir -p "$(dirname $2)"
1324     $cp_f "$1" "$2"
1325 }
1326
1327 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1328 # system-dependent things.
1329
1330 COMPONENT_LIST="
1331     bsfs
1332     decoders
1333     demuxers
1334     encoders
1335     filters
1336     hwaccels
1337     indevs
1338     muxers
1339     outdevs
1340     parsers
1341     protocols
1342 "
1343
1344 EXAMPLE_LIST="
1345     avio_reading_example
1346     avio_dir_cmd_example
1347     decoding_encoding_example
1348     demuxing_decoding_example
1349     extract_mvs_example
1350     filter_audio_example
1351     filtering_audio_example
1352     filtering_video_example
1353     metadata_example
1354     muxing_example
1355     qsvdec_example
1356     remuxing_example
1357     resampling_audio_example
1358     scaling_video_example
1359     transcode_aac_example
1360     transcoding_example
1361 "
1362
1363 EXTERNAL_LIBRARY_LIST="
1364     avisynth
1365     bzlib
1366     crystalhd
1367     decklink
1368     frei0r
1369     gnutls
1370     iconv
1371     ladspa
1372     libaacplus
1373     libass
1374     libbluray
1375     libbs2b
1376     libcaca
1377     libcdio
1378     libcelt
1379     libdc1394
1380     libdcadec
1381     libfaac
1382     libfdk_aac
1383     libflite
1384     libfontconfig
1385     libfreetype
1386     libfribidi
1387     libgme
1388     libgsm
1389     libiec61883
1390     libilbc
1391     libkvazaar
1392     libmfx
1393     libmodplug
1394     libmp3lame
1395     libnut
1396     libopencore_amrnb
1397     libopencore_amrwb
1398     libopencv
1399     libopenh264
1400     libopenjpeg
1401     libopus
1402     libpulse
1403     libquvi
1404     librtmp
1405     libschroedinger
1406     libshine
1407     libsmbclient
1408     libsnappy
1409     libsoxr
1410     libspeex
1411     libssh
1412     libstagefright_h264
1413     libtheora
1414     libtwolame
1415     libutvideo
1416     libv4l2
1417     libvidstab
1418     libvo_aacenc
1419     libvo_amrwbenc
1420     libvorbis
1421     libvpx
1422     libwavpack
1423     libwebp
1424     libx264
1425     libx265
1426     libxavs
1427     libxcb
1428     libxcb_shm
1429     libxcb_shape
1430     libxcb_xfixes
1431     libxvid
1432     libzmq
1433     libzvbi
1434     lzma
1435     mmal
1436     nvenc
1437     openal
1438     opencl
1439     opengl
1440     openssl
1441     sdl
1442     securetransport
1443     x11grab
1444     xlib
1445     zlib
1446 "
1447
1448 DOCUMENT_LIST="
1449     doc
1450     htmlpages
1451     manpages
1452     podpages
1453     txtpages
1454 "
1455
1456 FEATURE_LIST="
1457     ftrapv
1458     gray
1459     hardcoded_tables
1460     runtime_cpudetect
1461     safe_bitstream_reader
1462     shared
1463     small
1464     static
1465     swscale_alpha
1466 "
1467
1468 HWACCEL_LIST="
1469     d3d11va
1470     dxva2
1471     vaapi
1472     vda
1473     vdpau
1474     videotoolbox
1475     xvmc
1476 "
1477
1478 LIBRARY_LIST="
1479     avcodec
1480     avdevice
1481     avfilter
1482     avformat
1483     avresample
1484     avutil
1485     postproc
1486     swresample
1487     swscale
1488 "
1489
1490 LICENSE_LIST="
1491     gpl
1492     nonfree
1493     version3
1494 "
1495
1496 PROGRAM_LIST="
1497     ffplay
1498     ffprobe
1499     ffserver
1500     ffmpeg
1501 "
1502
1503 SUBSYSTEM_LIST="
1504     dct
1505     dwt
1506     error_resilience
1507     faan
1508     fast_unaligned
1509     fft
1510     lsp
1511     lzo
1512     mdct
1513     pixelutils
1514     network
1515     rdft
1516 "
1517
1518 CONFIG_LIST="
1519     $COMPONENT_LIST
1520     $DOCUMENT_LIST
1521     $EXAMPLE_LIST
1522     $EXTERNAL_LIBRARY_LIST
1523     $FEATURE_LIST
1524     $HWACCEL_LIST
1525     $LICENSE_LIST
1526     $LIBRARY_LIST
1527     $PROGRAM_LIST
1528     $SUBSYSTEM_LIST
1529     fontconfig
1530     incompatible_libav_abi
1531     memalign_hack
1532     memory_poisoning
1533     neon_clobber_test
1534     pic
1535     pod2man
1536     raise_major
1537     thumb
1538     valgrind_backtrace
1539     xmm_clobber_test
1540 "
1541
1542 THREADS_LIST="
1543     pthreads
1544     os2threads
1545     w32threads
1546 "
1547
1548 ATOMICS_LIST="
1549     atomics_gcc
1550     atomics_suncc
1551     atomics_win32
1552 "
1553
1554 ARCH_LIST="
1555     aarch64
1556     alpha
1557     arm
1558     avr32
1559     avr32_ap
1560     avr32_uc
1561     bfin
1562     ia64
1563     m68k
1564     mips
1565     mips64
1566     parisc
1567     ppc
1568     ppc64
1569     s390
1570     sh4
1571     sparc
1572     sparc64
1573     tilegx
1574     tilepro
1575     tomi
1576     x86
1577     x86_32
1578     x86_64
1579 "
1580
1581 ARCH_EXT_LIST_ARM="
1582     armv5te
1583     armv6
1584     armv6t2
1585     armv8
1586     neon
1587     vfp
1588     vfpv3
1589     setend
1590 "
1591
1592 ARCH_EXT_LIST_MIPS="
1593     mipsfpu
1594     mips32r2
1595     mips32r5
1596     mips64r6
1597     mipsdspr1
1598     mipsdspr2
1599     msa
1600 "
1601
1602 ARCH_EXT_LIST_LOONGSON="
1603     loongson2
1604     loongson3
1605     mmi
1606 "
1607
1608 ARCH_EXT_LIST_X86_SIMD="
1609     amd3dnow
1610     amd3dnowext
1611     avx
1612     avx2
1613     fma3
1614     fma4
1615     mmx
1616     mmxext
1617     sse
1618     sse2
1619     sse3
1620     sse4
1621     sse42
1622     ssse3
1623     xop
1624 "
1625
1626 ARCH_EXT_LIST_PPC="
1627     altivec
1628     dcbzl
1629     ldbrx
1630     power8
1631     ppc4xx
1632     vsx
1633 "
1634
1635 ARCH_EXT_LIST_X86="
1636     $ARCH_EXT_LIST_X86_SIMD
1637     cpunop
1638     i686
1639 "
1640
1641 ARCH_EXT_LIST="
1642     $ARCH_EXT_LIST_ARM
1643     $ARCH_EXT_LIST_PPC
1644     $ARCH_EXT_LIST_X86
1645     $ARCH_EXT_LIST_MIPS
1646     $ARCH_EXT_LIST_LOONGSON
1647 "
1648
1649 ARCH_FEATURES="
1650     aligned_stack
1651     fast_64bit
1652     fast_clz
1653     fast_cmov
1654     local_aligned_8
1655     local_aligned_16
1656     local_aligned_32
1657     simd_align_16
1658 "
1659
1660 BUILTIN_LIST="
1661     atomic_cas_ptr
1662     atomic_compare_exchange
1663     machine_rw_barrier
1664     MemoryBarrier
1665     mm_empty
1666     rdtsc
1667     sarestart
1668     sync_val_compare_and_swap
1669 "
1670 HAVE_LIST_CMDLINE="
1671     inline_asm
1672     symver
1673     yasm
1674 "
1675
1676 HAVE_LIST_PUB="
1677     bigendian
1678     fast_unaligned
1679     incompatible_libav_abi
1680 "
1681
1682 HEADERS_LIST="
1683     alsa_asoundlib_h
1684     altivec_h
1685     arpa_inet_h
1686     asm_types_h
1687     cdio_paranoia_h
1688     cdio_paranoia_paranoia_h
1689     dev_bktr_ioctl_bt848_h
1690     dev_bktr_ioctl_meteor_h
1691     dev_ic_bt8xx_h
1692     dev_video_bktr_ioctl_bt848_h
1693     dev_video_meteor_ioctl_meteor_h
1694     direct_h
1695     dirent_h
1696     dlfcn_h
1697     d3d11_h
1698     dxva_h
1699     ES2_gl_h
1700     gsm_h
1701     io_h
1702     mach_mach_time_h
1703     machine_ioctl_bt848_h
1704     machine_ioctl_meteor_h
1705     malloc_h
1706     openjpeg_1_5_openjpeg_h
1707     OpenGL_gl3_h
1708     poll_h
1709     sndio_h
1710     soundcard_h
1711     sys_mman_h
1712     sys_param_h
1713     sys_resource_h
1714     sys_select_h
1715     sys_soundcard_h
1716     sys_time_h
1717     sys_un_h
1718     sys_videoio_h
1719     termios_h
1720     udplite_h
1721     unistd_h
1722     valgrind_valgrind_h
1723     windows_h
1724     winsock2_h
1725 "
1726
1727 INTRINSICS_LIST="
1728     intrinsics_neon
1729 "
1730
1731 MATH_FUNCS="
1732     atanf
1733     atan2f
1734     cbrt
1735     cbrtf
1736     copysign
1737     cosf
1738     erf
1739     exp2
1740     exp2f
1741     expf
1742     isinf
1743     isnan
1744     ldexpf
1745     llrint
1746     llrintf
1747     log2
1748     log2f
1749     log10f
1750     lrint
1751     lrintf
1752     powf
1753     rint
1754     round
1755     roundf
1756     sinf
1757     trunc
1758     truncf
1759 "
1760
1761 SYSTEM_FUNCS="
1762     access
1763     aligned_malloc
1764     clock_gettime
1765     closesocket
1766     CommandLineToArgvW
1767     CoTaskMemFree
1768     CryptGenRandom
1769     dlopen
1770     fcntl
1771     flt_lim
1772     fork
1773     getaddrinfo
1774     gethrtime
1775     getopt
1776     GetProcessAffinityMask
1777     GetProcessMemoryInfo
1778     GetProcessTimes
1779     getrusage
1780     getservbyport
1781     GetSystemTimeAsFileTime
1782     gettimeofday
1783     glob
1784     glXGetProcAddress
1785     gmtime_r
1786     inet_aton
1787     isatty
1788     jack_port_get_latency_range
1789     kbhit
1790     localtime_r
1791     lstat
1792     lzo1x_999_compress
1793     mach_absolute_time
1794     MapViewOfFile
1795     memalign
1796     mkstemp
1797     mmap
1798     mprotect
1799     nanosleep
1800     PeekNamedPipe
1801     posix_memalign
1802     pthread_cancel
1803     sched_getaffinity
1804     SetConsoleTextAttribute
1805     SetConsoleCtrlHandler
1806     setmode
1807     setrlimit
1808     Sleep
1809     strerror_r
1810     sysconf
1811     sysctl
1812     usleep
1813     VirtualAlloc
1814     wglGetProcAddress
1815 "
1816
1817 TOOLCHAIN_FEATURES="
1818     as_dn_directive
1819     as_func
1820     as_object_arch
1821     asm_mod_q
1822     attribute_may_alias
1823     attribute_packed
1824     ebp_available
1825     ebx_available
1826     gnu_as
1827     gnu_windres
1828     ibm_asm
1829     inline_asm_labels
1830     inline_asm_nonlocal_labels
1831     inline_asm_direct_symbol_refs
1832     pragma_deprecated
1833     rsync_contimeout
1834     symver_asm_label
1835     symver_gnu_asm
1836     vfp_args
1837     xform_asm
1838     xmm_clobbers
1839 "
1840
1841 TYPES_LIST="
1842     CONDITION_VARIABLE_Ptr
1843     socklen_t
1844     struct_addrinfo
1845     struct_dcadec_exss_info_matrix_encoding
1846     struct_group_source_req
1847     struct_ip_mreq_source
1848     struct_ipv6_mreq
1849     struct_pollfd
1850     struct_rusage_ru_maxrss
1851     struct_sctp_event_subscribe
1852     struct_sockaddr_in6
1853     struct_sockaddr_sa_len
1854     struct_sockaddr_storage
1855     struct_stat_st_mtim_tv_nsec
1856     struct_v4l2_frmivalenum_discrete
1857 "
1858
1859 HAVE_LIST="
1860     $ARCH_EXT_LIST
1861     $(add_suffix _external $ARCH_EXT_LIST)
1862     $(add_suffix _inline   $ARCH_EXT_LIST)
1863     $ARCH_FEATURES
1864     $ATOMICS_LIST
1865     $BUILTIN_LIST
1866     $HAVE_LIST_CMDLINE
1867     $HAVE_LIST_PUB
1868     $HEADERS_LIST
1869     $INTRINSICS_LIST
1870     $MATH_FUNCS
1871     $SYSTEM_FUNCS
1872     $THREADS_LIST
1873     $TOOLCHAIN_FEATURES
1874     $TYPES_LIST
1875     atomics_native
1876     dos_paths
1877     dxva2api_cobj
1878     dxva2_lib
1879     libc_msvcrt
1880     libdc1394_1
1881     libdc1394_2
1882     makeinfo
1883     makeinfo_html
1884     perl
1885     pod2man
1886     sdl
1887     section_data_rel_ro
1888     texi2html
1889     threads
1890     vaapi_x11
1891     vdpau_x11
1892     xlib
1893 "
1894
1895 # options emitted with CONFIG_ prefix but not available on the command line
1896 CONFIG_EXTRA="
1897     aandcttables
1898     ac3dsp
1899     audio_frame_queue
1900     audiodsp
1901     blockdsp
1902     bswapdsp
1903     cabac
1904     dvprofile
1905     exif
1906     faandct
1907     faanidct
1908     fdctdsp
1909     flacdsp
1910     fmtconvert
1911     frame_thread_encoder
1912     g722dsp
1913     gcrypt
1914     gmp
1915     golomb
1916     gplv3
1917     h263dsp
1918     h264chroma
1919     h264dsp
1920     h264pred
1921     h264qpel
1922     hpeldsp
1923     huffman
1924     huffyuvdsp
1925     huffyuvencdsp
1926     idctdsp
1927     iirfilter
1928     imdct15
1929     intrax8
1930     ividsp
1931     jpegtables
1932     libx262
1933     lgplv3
1934     llauddsp
1935     llviddsp
1936     lpc
1937     me_cmp
1938     mpeg_er
1939     mpegaudio
1940     mpegaudiodsp
1941     mpegvideo
1942     mpegvideoenc
1943     mss34dsp
1944     pixblockdsp
1945     qpeldsp
1946     qsv
1947     qsvdec
1948     qsvenc
1949     rangecoder
1950     riffdec
1951     riffenc
1952     rtpdec
1953     rtpenc_chain
1954     rv34dsp
1955     sinewin
1956     snappy
1957     startcode
1958     texturedsp
1959     texturedspenc
1960     tpeldsp
1961     videodsp
1962     vp3dsp
1963     vp56dsp
1964     vp8dsp
1965     wma_freqs
1966     wmv2dsp
1967 "
1968
1969 CMDLINE_SELECT="
1970     $ARCH_EXT_LIST
1971     $CONFIG_LIST
1972     $HAVE_LIST_CMDLINE
1973     $THREADS_LIST
1974     asm
1975     cross_compile
1976     debug
1977     extra_warnings
1978     logging
1979     lto
1980     optimizations
1981     rpath
1982     stripping
1983 "
1984
1985 PATHS_LIST="
1986     bindir
1987     datadir
1988     docdir
1989     incdir
1990     libdir
1991     mandir
1992     pkgconfigdir
1993     prefix
1994     shlibdir
1995 "
1996
1997 CMDLINE_SET="
1998     $PATHS_LIST
1999     ar
2000     arch
2001     as
2002     assert_level
2003     build_suffix
2004     cc
2005     cpu
2006     cross_prefix
2007     cxx
2008     dep_cc
2009     doxygen
2010     env
2011     extra_version
2012     gas
2013     host_cc
2014     host_cflags
2015     host_ld
2016     host_ldflags
2017     host_libs
2018     host_os
2019     install
2020     ld
2021     logfile
2022     malloc_prefix
2023     nm
2024     optflags
2025     pkg_config
2026     pkg_config_flags
2027     progs_suffix
2028     random_seed
2029     ranlib
2030     samples
2031     strip
2032     sws_max_filter_size
2033     sysinclude
2034     sysroot
2035     target_exec
2036     target_os
2037     target_path
2038     target_samples
2039     tempprefix
2040     toolchain
2041     valgrind
2042     yasmexe
2043 "
2044
2045 CMDLINE_APPEND="
2046     extra_cflags
2047     extra_cxxflags
2048     host_cppflags
2049 "
2050
2051 # code dependency declarations
2052
2053 # architecture extensions
2054
2055 armv5te_deps="arm"
2056 armv6_deps="arm"
2057 armv6t2_deps="arm"
2058 armv8_deps="aarch64"
2059 neon_deps_any="aarch64 arm"
2060 intrinsics_neon_deps="neon"
2061 vfp_deps_any="aarch64 arm"
2062 vfpv3_deps="vfp"
2063 setend_deps="arm"
2064
2065 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2066
2067 mipsfpu_deps="mips"
2068 mipsdspr1_deps="mips"
2069 mipsdspr2_deps="mips"
2070 mips32r2_deps="mips"
2071 mips32r5_deps="mips"
2072 mips64r6_deps="mips"
2073 msa_deps="mips"
2074 mmi_deps="mips"
2075
2076 altivec_deps="ppc"
2077 dcbzl_deps="ppc"
2078 ldbrx_deps="ppc"
2079 ppc4xx_deps="ppc"
2080 vsx_deps="altivec"
2081 power8_deps="vsx"
2082
2083 cpunop_deps="i686"
2084 x86_64_select="i686"
2085 x86_64_suggest="fast_cmov"
2086
2087 amd3dnow_deps="mmx"
2088 amd3dnowext_deps="amd3dnow"
2089 i686_deps="x86"
2090 mmx_deps="x86"
2091 mmxext_deps="mmx"
2092 sse_deps="mmxext"
2093 sse2_deps="sse"
2094 sse3_deps="sse2"
2095 ssse3_deps="sse3"
2096 sse4_deps="ssse3"
2097 sse42_deps="sse4"
2098 avx_deps="sse42"
2099 xop_deps="avx"
2100 fma3_deps="avx"
2101 fma4_deps="avx"
2102 avx2_deps="avx"
2103
2104 mmx_external_deps="yasm"
2105 mmx_inline_deps="inline_asm"
2106 mmx_suggest="mmx_external mmx_inline"
2107
2108 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2109     eval dep=\$${ext}_deps
2110     eval ${ext}_external_deps='"${dep}_external"'
2111     eval ${ext}_inline_deps='"${dep}_inline"'
2112     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2113 done
2114
2115 aligned_stack_if_any="aarch64 ppc x86"
2116 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2117 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2118 fast_unaligned_if_any="aarch64 ppc x86"
2119 simd_align_16_if_any="altivec neon sse"
2120
2121 # system capabilities
2122 symver_if_any="symver_asm_label symver_gnu_asm"
2123 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2124
2125 # threading support
2126 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2127 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2128 atomics_win32_if="MemoryBarrier"
2129 atomics_native_if_any="$ATOMICS_LIST"
2130 w32threads_deps="atomics_native"
2131 threads_if_any="$THREADS_LIST"
2132
2133 # subsystems
2134 dct_select="rdft"
2135 error_resilience_select="me_cmp"
2136 faandct_deps="faan fdctdsp"
2137 faanidct_deps="faan idctdsp"
2138 frame_thread_encoder_deps="encoders threads"
2139 intrax8_select="error_resilience"
2140 mdct_select="fft"
2141 rdft_select="fft"
2142 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2143 mpeg_er_select="error_resilience"
2144 mpegaudio_select="mpegaudiodsp"
2145 mpegaudiodsp_select="dct"
2146 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2147 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2148 qsvdec_select="qsv"
2149 qsvenc_select="qsv"
2150
2151 # decoders / encoders
2152 aac_decoder_select="imdct15 mdct sinewin"
2153 aac_fixed_decoder_select="mdct sinewin"
2154 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2155 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2156 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2157 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2158 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2159 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2160 adpcm_g722_decoder_select="g722dsp"
2161 adpcm_g722_encoder_select="g722dsp"
2162 aic_decoder_select="golomb idctdsp"
2163 alac_encoder_select="lpc"
2164 als_decoder_select="bswapdsp"
2165 amrnb_decoder_select="lsp"
2166 amrwb_decoder_select="lsp"
2167 amv_decoder_select="sp5x_decoder exif"
2168 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2169 ape_decoder_select="bswapdsp llauddsp"
2170 apng_decoder_select="zlib"
2171 apng_encoder_select="huffyuvencdsp zlib"
2172 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2173 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2174 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2175 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2176 atrac1_decoder_select="mdct sinewin"
2177 atrac3_decoder_select="mdct"
2178 atrac3p_decoder_select="mdct sinewin"
2179 avrn_decoder_select="exif jpegtables"
2180 bink_decoder_select="blockdsp hpeldsp"
2181 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2182 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2183 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2184 cllc_decoder_select="bswapdsp"
2185 comfortnoise_encoder_select="lpc"
2186 cook_decoder_select="audiodsp mdct sinewin"
2187 cscd_decoder_select="lzo"
2188 cscd_decoder_suggest="zlib"
2189 dca_decoder_select="fmtconvert mdct"
2190 dds_decoder_select="texturedsp"
2191 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2192 dnxhd_decoder_select="blockdsp idctdsp"
2193 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2194 dvvideo_decoder_select="dvprofile idctdsp"
2195 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2196 dxa_decoder_select="zlib"
2197 eac3_decoder_select="ac3_decoder"
2198 eac3_encoder_select="ac3_encoder"
2199 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2200 eatgq_decoder_select="aandcttables"
2201 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2202 exr_decoder_select="zlib"
2203 ffv1_decoder_select="golomb rangecoder"
2204 ffv1_encoder_select="rangecoder"
2205 ffvhuff_decoder_select="huffyuv_decoder"
2206 ffvhuff_encoder_select="huffyuv_encoder"
2207 fic_decoder_select="golomb"
2208 flac_decoder_select="flacdsp golomb"
2209 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2210 flashsv_decoder_select="zlib"
2211 flashsv_encoder_select="zlib"
2212 flashsv2_encoder_select="zlib"
2213 flashsv2_decoder_select="zlib"
2214 flv_decoder_select="h263_decoder"
2215 flv_encoder_select="h263_encoder"
2216 fourxm_decoder_select="blockdsp bswapdsp"
2217 fraps_decoder_select="bswapdsp huffman"
2218 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2219 g729_decoder_select="audiodsp"
2220 h261_decoder_select="mpegvideo"
2221 h261_encoder_select="aandcttables mpegvideoenc"
2222 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2223 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2224 h263i_decoder_select="h263_decoder"
2225 h263p_decoder_select="h263_decoder"
2226 h263p_encoder_select="h263_encoder"
2227 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2228 h264_decoder_suggest="error_resilience"
2229 h264_qsv_decoder_deps="libmfx"
2230 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2231 h264_qsv_encoder_deps="libmfx"
2232 h264_qsv_encoder_select="qsvenc"
2233 hap_decoder_select="snappy texturedsp"
2234 hap_encoder_deps="libsnappy"
2235 hap_encoder_select="texturedspenc"
2236 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2237 hevc_qsv_encoder_deps="libmfx"
2238 hevc_qsv_decoder_deps="libmfx"
2239 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2240 hevc_qsv_encoder_select="qsvenc"
2241 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2242 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2243 iac_decoder_select="imc_decoder"
2244 imc_decoder_select="bswapdsp fft mdct sinewin"
2245 indeo3_decoder_select="hpeldsp"
2246 indeo4_decoder_select="ividsp"
2247 indeo5_decoder_select="ividsp"
2248 interplay_video_decoder_select="hpeldsp"
2249 jpegls_decoder_select="golomb mjpeg_decoder"
2250 jpegls_encoder_select="golomb"
2251 jv_decoder_select="blockdsp"
2252 lagarith_decoder_select="huffyuvdsp"
2253 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2254 loco_decoder_select="golomb"
2255 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2256 metasound_decoder_select="lsp mdct sinewin"
2257 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2258 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2259 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2260 mjpegb_decoder_select="mjpeg_decoder"
2261 mlp_decoder_select="mlp_parser"
2262 motionpixels_decoder_select="bswapdsp"
2263 mp1_decoder_select="mpegaudio"
2264 mp1float_decoder_select="mpegaudio"
2265 mp2_decoder_select="mpegaudio"
2266 mp2float_decoder_select="mpegaudio"
2267 mp3_decoder_select="mpegaudio"
2268 mp3adu_decoder_select="mpegaudio"
2269 mp3adufloat_decoder_select="mpegaudio"
2270 mp3float_decoder_select="mpegaudio"
2271 mp3on4_decoder_select="mpegaudio"
2272 mp3on4float_decoder_select="mpegaudio"
2273 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2274 mpc8_decoder_select="mpegaudiodsp"
2275 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2276 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2277 mpegvideo_decoder_select="mpegvideo"
2278 mpeg1video_decoder_select="mpegvideo"
2279 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2280 mpeg2video_decoder_select="mpegvideo"
2281 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2282 mpeg2_qsv_decoder_deps="libmfx"
2283 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2284 mpeg2_qsv_encoder_deps="libmfx"
2285 mpeg2_qsv_encoder_select="qsvenc"
2286 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2287 mpeg4_encoder_select="h263_encoder"
2288 msa1_decoder_select="mss34dsp"
2289 msmpeg4v1_decoder_select="h263_decoder"
2290 msmpeg4v2_decoder_select="h263_decoder"
2291 msmpeg4v2_encoder_select="h263_encoder"
2292 msmpeg4v3_decoder_select="h263_decoder"
2293 msmpeg4v3_encoder_select="h263_encoder"
2294 mss2_decoder_select="vc1_decoder"
2295 mts2_decoder_select="mss34dsp"
2296 mxpeg_decoder_select="mjpeg_decoder"
2297 nellymoser_decoder_select="mdct sinewin"
2298 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2299 nuv_decoder_select="idctdsp lzo"
2300 on2avc_decoder_select="mdct"
2301 opus_decoder_deps="swresample"
2302 opus_decoder_select="imdct15"
2303 png_decoder_select="zlib"
2304 png_encoder_select="huffyuvencdsp zlib"
2305 prores_decoder_select="blockdsp idctdsp"
2306 prores_encoder_select="fdctdsp"
2307 qcelp_decoder_select="lsp"
2308 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2309 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2310 ra_144_decoder_select="audiodsp"
2311 ralf_decoder_select="golomb"
2312 rawvideo_decoder_select="bswapdsp"
2313 rtjpeg_decoder_select="me_cmp"
2314 rv10_decoder_select="h263_decoder"
2315 rv10_encoder_select="h263_encoder"
2316 rv20_decoder_select="h263_decoder"
2317 rv20_encoder_select="h263_encoder"
2318 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2319 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2320 shorten_decoder_select="golomb"
2321 sipr_decoder_select="lsp"
2322 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2323 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2324 sonic_decoder_select="golomb rangecoder"
2325 sonic_encoder_select="golomb rangecoder"
2326 sonic_ls_encoder_select="golomb rangecoder"
2327 sp5x_decoder_select="mjpeg_decoder"
2328 svq1_decoder_select="hpeldsp"
2329 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2330 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2331 svq3_decoder_suggest="zlib"
2332 tak_decoder_select="audiodsp"
2333 tdsc_decoder_select="zlib mjpeg_decoder"
2334 theora_decoder_select="vp3_decoder"
2335 thp_decoder_select="mjpeg_decoder"
2336 tiff_decoder_suggest="zlib lzma"
2337 tiff_encoder_suggest="zlib"
2338 truehd_decoder_select="mlp_parser"
2339 truemotion2_decoder_select="bswapdsp"
2340 truespeech_decoder_select="bswapdsp"
2341 tscc_decoder_select="zlib"
2342 twinvq_decoder_select="mdct lsp sinewin"
2343 txd_decoder_select="texturedsp"
2344 utvideo_decoder_select="bswapdsp"
2345 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2346 vble_decoder_select="huffyuvdsp"
2347 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2348 vc1image_decoder_select="vc1_decoder"
2349 vc1_qsv_decoder_deps="libmfx"
2350 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2351 vorbis_decoder_select="mdct"
2352 vorbis_encoder_select="mdct"
2353 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2354 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2355 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2356 vp6a_decoder_select="vp6_decoder"
2357 vp6f_decoder_select="vp6_decoder"
2358 vp7_decoder_select="h264pred videodsp vp8dsp"
2359 vp8_decoder_select="h264pred videodsp vp8dsp"
2360 vp9_decoder_select="videodsp vp9_parser"
2361 webp_decoder_select="vp8_decoder"
2362 wmalossless_decoder_select="llauddsp"
2363 wmapro_decoder_select="mdct sinewin wma_freqs"
2364 wmav1_decoder_select="mdct sinewin wma_freqs"
2365 wmav1_encoder_select="mdct sinewin wma_freqs"
2366 wmav2_decoder_select="mdct sinewin wma_freqs"
2367 wmav2_encoder_select="mdct sinewin wma_freqs"
2368 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2369 wmv1_decoder_select="h263_decoder"
2370 wmv1_encoder_select="h263_encoder"
2371 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2372 wmv2_encoder_select="h263_encoder wmv2dsp"
2373 wmv3_decoder_select="vc1_decoder"
2374 wmv3image_decoder_select="wmv3_decoder"
2375 zerocodec_decoder_select="zlib"
2376 zlib_decoder_select="zlib"
2377 zlib_encoder_select="zlib"
2378 zmbv_decoder_select="zlib"
2379 zmbv_encoder_select="zlib"
2380
2381 # hardware accelerators
2382 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2383 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2384 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2385 vaapi_deps="va_va_h"
2386 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads CoreServices_CoreServices_h"
2387 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore -framework CoreServices"
2388 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2389 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads CoreServices_CoreServices_h"
2390 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreServices"
2391 xvmc_deps="X11_extensions_XvMClib_h"
2392
2393 h263_vaapi_hwaccel_deps="vaapi"
2394 h263_vaapi_hwaccel_select="h263_decoder"
2395 h263_vdpau_hwaccel_deps="vdpau"
2396 h263_vdpau_hwaccel_select="h263_decoder"
2397 h263_videotoolbox_hwaccel_deps="videotoolbox"
2398 h263_videotoolbox_hwaccel_select="h263_decoder"
2399 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2400 h264_d3d11va_hwaccel_deps="d3d11va"
2401 h264_d3d11va_hwaccel_select="h264_decoder"
2402 h264_dxva2_hwaccel_deps="dxva2"
2403 h264_dxva2_hwaccel_select="h264_decoder"
2404 h264_mmal_decoder_deps="mmal"
2405 h264_mmal_hwaccel_deps="mmal"
2406 h264_mmal_decoder_select="h264_decoder"
2407 h264_mmal_encoder_deps="mmal"
2408 h264_qsv_hwaccel_deps="libmfx"
2409 h264_vaapi_hwaccel_deps="vaapi"
2410 h264_vaapi_hwaccel_select="h264_decoder"
2411 h264_vda_decoder_deps="vda"
2412 h264_vda_decoder_select="h264_decoder"
2413 h264_vda_hwaccel_deps="vda"
2414 h264_vda_hwaccel_select="h264_decoder"
2415 h264_vda_old_hwaccel_deps="vda"
2416 h264_vda_old_hwaccel_select="h264_decoder"
2417 h264_vdpau_decoder_deps="vdpau"
2418 h264_vdpau_decoder_select="h264_decoder"
2419 h264_vdpau_hwaccel_deps="vdpau"
2420 h264_vdpau_hwaccel_select="h264_decoder"
2421 h264_videotoolbox_hwaccel_deps="videotoolbox"
2422 h264_videotoolbox_hwaccel_select="h264_decoder"
2423 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2424 hevc_d3d11va_hwaccel_select="hevc_decoder"
2425 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2426 hevc_dxva2_hwaccel_select="hevc_decoder"
2427 hevc_qsv_hwaccel_deps="libmfx"
2428 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2429 hevc_vdpau_hwaccel_select="hevc_decoder"
2430 mpeg_vdpau_decoder_deps="vdpau"
2431 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2432 mpeg_xvmc_hwaccel_deps="xvmc"
2433 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2434 mpeg1_vdpau_decoder_deps="vdpau"
2435 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2436 mpeg1_vdpau_hwaccel_deps="vdpau"
2437 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2438 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2439 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2440 mpeg1_xvmc_hwaccel_deps="xvmc"
2441 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2442 mpeg2_crystalhd_decoder_select="crystalhd"
2443 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2444 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2445 mpeg2_dxva2_hwaccel_deps="dxva2"
2446 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2447 mpeg2_qsv_hwaccel_deps="libmfx"
2448 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2449 mpeg2_vaapi_hwaccel_deps="vaapi"
2450 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2451 mpeg2_vdpau_hwaccel_deps="vdpau"
2452 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2453 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2454 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2455 mpeg2_xvmc_hwaccel_deps="xvmc"
2456 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2457 mpeg4_crystalhd_decoder_select="crystalhd"
2458 mpeg4_vaapi_hwaccel_deps="vaapi"
2459 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2460 mpeg4_vdpau_decoder_deps="vdpau"
2461 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2462 mpeg4_vdpau_hwaccel_deps="vdpau"
2463 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2464 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2465 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2466 msmpeg4_crystalhd_decoder_select="crystalhd"
2467 vc1_crystalhd_decoder_select="crystalhd"
2468 vc1_d3d11va_hwaccel_deps="d3d11va"
2469 vc1_d3d11va_hwaccel_select="vc1_decoder"
2470 vc1_dxva2_hwaccel_deps="dxva2"
2471 vc1_dxva2_hwaccel_select="vc1_decoder"
2472 vc1_vaapi_hwaccel_deps="vaapi"
2473 vc1_vaapi_hwaccel_select="vc1_decoder"
2474 vc1_vdpau_decoder_deps="vdpau"
2475 vc1_vdpau_decoder_select="vc1_decoder"
2476 vc1_vdpau_hwaccel_deps="vdpau"
2477 vc1_vdpau_hwaccel_select="vc1_decoder"
2478 vc1_qsv_hwaccel_deps="libmfx"
2479 vc1_qsv_hwaccel_select="qsvdec_vc1"
2480 wmv3_crystalhd_decoder_select="crystalhd"
2481 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2482 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2483 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2484 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2485 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2486
2487 # parsers
2488 h264_parser_select="h264_decoder"
2489 hevc_parser_select="golomb"
2490 mpegvideo_parser_select="mpegvideo"
2491 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2492 vc1_parser_select="mpegvideo startcode vc1_decoder"
2493
2494 # bitstream_filters
2495 mjpeg2jpeg_bsf_select="jpegtables"
2496
2497 # external libraries
2498 libaacplus_encoder_deps="libaacplus"
2499 libcelt_decoder_deps="libcelt"
2500 libdcadec_decoder_deps="libdcadec"
2501 libfaac_encoder_deps="libfaac"
2502 libfaac_encoder_select="audio_frame_queue"
2503 libfdk_aac_decoder_deps="libfdk_aac"
2504 libfdk_aac_encoder_deps="libfdk_aac"
2505 libfdk_aac_encoder_select="audio_frame_queue"
2506 libgme_demuxer_deps="libgme"
2507 libgsm_decoder_deps="libgsm"
2508 libgsm_encoder_deps="libgsm"
2509 libgsm_ms_decoder_deps="libgsm"
2510 libgsm_ms_encoder_deps="libgsm"
2511 libilbc_decoder_deps="libilbc"
2512 libilbc_encoder_deps="libilbc"
2513 libkvazaar_encoder_deps="libkvazaar"
2514 libmodplug_demuxer_deps="libmodplug"
2515 libmp3lame_encoder_deps="libmp3lame"
2516 libmp3lame_encoder_select="audio_frame_queue"
2517 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2518 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2519 libopencore_amrnb_encoder_select="audio_frame_queue"
2520 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2521 libopenh264_encoder_deps="libopenh264"
2522 libopenjpeg_decoder_deps="libopenjpeg"
2523 libopenjpeg_encoder_deps="libopenjpeg"
2524 libopus_decoder_deps="libopus"
2525 libopus_encoder_deps="libopus"
2526 libopus_encoder_select="audio_frame_queue"
2527 libquvi_demuxer_deps="libquvi"
2528 libschroedinger_decoder_deps="libschroedinger"
2529 libschroedinger_encoder_deps="libschroedinger"
2530 libshine_encoder_deps="libshine"
2531 libshine_encoder_select="audio_frame_queue"
2532 libspeex_decoder_deps="libspeex"
2533 libspeex_encoder_deps="libspeex"
2534 libspeex_encoder_select="audio_frame_queue"
2535 libstagefright_h264_decoder_deps="libstagefright_h264"
2536 libtheora_encoder_deps="libtheora"
2537 libtwolame_encoder_deps="libtwolame"
2538 libvo_aacenc_encoder_deps="libvo_aacenc"
2539 libvo_aacenc_encoder_select="audio_frame_queue"
2540 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2541 libvorbis_decoder_deps="libvorbis"
2542 libvorbis_encoder_deps="libvorbis"
2543 libvorbis_encoder_select="audio_frame_queue"
2544 libvpx_vp8_decoder_deps="libvpx"
2545 libvpx_vp8_encoder_deps="libvpx"
2546 libvpx_vp9_decoder_deps="libvpx"
2547 libvpx_vp9_encoder_deps="libvpx"
2548 libwavpack_encoder_deps="libwavpack"
2549 libwebp_encoder_deps="libwebp"
2550 libwebp_anim_encoder_deps="libwebp"
2551 libx262_encoder_deps="libx262"
2552 libx264_encoder_deps="libx264"
2553 libx264rgb_encoder_deps="libx264"
2554 libx264rgb_encoder_select="libx264_encoder"
2555 libx265_encoder_deps="libx265"
2556 libxavs_encoder_deps="libxavs"
2557 libxvid_encoder_deps="libxvid"
2558 libutvideo_decoder_deps="libutvideo"
2559 libutvideo_encoder_deps="libutvideo"
2560 libzvbi_teletext_decoder_deps="libzvbi"
2561 nvenc_encoder_deps="nvenc"
2562 nvenc_h264_encoder_deps="nvenc"
2563 nvenc_hevc_encoder_deps="nvenc"
2564
2565 # demuxers / muxers
2566 ac3_demuxer_select="ac3_parser"
2567 asf_demuxer_select="riffdec"
2568 asf_o_demuxer_select="riffdec"
2569 asf_muxer_select="riffenc"
2570 asf_stream_muxer_select="asf_muxer"
2571 avi_demuxer_select="riffdec exif"
2572 avi_muxer_select="riffenc"
2573 avisynth_demuxer_deps="avisynth"
2574 avisynth_demuxer_select="riffdec"
2575 caf_demuxer_select="riffdec"
2576 dash_muxer_select="mp4_muxer"
2577 dirac_demuxer_select="dirac_parser"
2578 dts_demuxer_select="dca_parser"
2579 dtshd_demuxer_select="dca_parser"
2580 dv_demuxer_select="dvprofile"
2581 dv_muxer_select="dvprofile"
2582 dxa_demuxer_select="riffdec"
2583 eac3_demuxer_select="ac3_parser"
2584 f4v_muxer_select="mov_muxer"
2585 flac_demuxer_select="flac_parser"
2586 hds_muxer_select="flv_muxer"
2587 hls_muxer_select="mpegts_muxer"
2588 image2_alias_pix_demuxer_select="image2_demuxer"
2589 image2_brender_pix_demuxer_select="image2_demuxer"
2590 ipod_muxer_select="mov_muxer"
2591 ismv_muxer_select="mov_muxer"
2592 libnut_demuxer_deps="libnut"
2593 libnut_muxer_deps="libnut"
2594 matroska_audio_muxer_select="matroska_muxer"
2595 matroska_demuxer_select="riffdec"
2596 matroska_demuxer_suggest="bzlib lzo zlib"
2597 matroska_muxer_select="riffenc"
2598 mmf_muxer_select="riffenc"
2599 mov_demuxer_select="riffdec"
2600 mov_demuxer_suggest="zlib"
2601 mov_muxer_select="riffenc rtpenc_chain"
2602 mp3_demuxer_select="mpegaudio_parser"
2603 mp4_muxer_select="mov_muxer"
2604 mpegts_muxer_select="adts_muxer latm_muxer"
2605 mpegtsraw_demuxer_select="mpegts_demuxer"
2606 mxf_d10_muxer_select="mxf_muxer"
2607 mxf_opatom_muxer_select="mxf_muxer"
2608 nut_muxer_select="riffenc"
2609 nuv_demuxer_select="riffdec"
2610 oga_muxer_select="ogg_muxer"
2611 ogg_demuxer_select="golomb"
2612 opus_muxer_select="ogg_muxer"
2613 psp_muxer_select="mov_muxer"
2614 rtp_demuxer_select="sdp_demuxer"
2615 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2616 rtsp_demuxer_select="http_protocol rtpdec"
2617 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2618 sap_demuxer_select="sdp_demuxer"
2619 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2620 sdp_demuxer_select="rtpdec"
2621 smoothstreaming_muxer_select="ismv_muxer"
2622 spdif_muxer_select="aac_parser"
2623 spx_muxer_select="ogg_muxer"
2624 tak_demuxer_select="tak_parser"
2625 tg2_muxer_select="mov_muxer"
2626 tgp_muxer_select="mov_muxer"
2627 vobsub_demuxer_select="mpegps_demuxer"
2628 w64_demuxer_select="wav_demuxer"
2629 w64_muxer_select="wav_muxer"
2630 wav_demuxer_select="riffdec"
2631 wav_muxer_select="riffenc"
2632 webm_muxer_select="riffenc"
2633 wtv_demuxer_select="riffdec"
2634 wtv_muxer_select="riffenc"
2635 xmv_demuxer_select="riffdec"
2636 xwma_demuxer_select="riffdec"
2637
2638 # indevs / outdevs
2639 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2640 alsa_outdev_deps="alsa_asoundlib_h"
2641 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2642 avfoundation_indev_select="avfoundation"
2643 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2644 caca_outdev_deps="libcaca"
2645 decklink_outdev_deps="decklink pthreads"
2646 decklink_outdev_extralibs="-lstdc++"
2647 decklink_indev_deps="decklink pthreads"
2648 decklink_indev_extralibs="-lstdc++"
2649 dshow_indev_deps="IBaseFilter"
2650 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2651 dv1394_indev_deps="dv1394"
2652 dv1394_indev_select="dv_demuxer"
2653 fbdev_indev_deps="linux_fb_h"
2654 fbdev_outdev_deps="linux_fb_h"
2655 gdigrab_indev_deps="CreateDIBSection"
2656 gdigrab_indev_extralibs="-lgdi32"
2657 gdigrab_indev_select="bmp_decoder"
2658 iec61883_indev_deps="libiec61883"
2659 jack_indev_deps="jack_jack_h sem_timedwait"
2660 lavfi_indev_deps="avfilter"
2661 libcdio_indev_deps="libcdio"
2662 libdc1394_indev_deps="libdc1394"
2663 libv4l2_indev_deps="libv4l2"
2664 openal_indev_deps="openal"
2665 opengl_outdev_deps="opengl"
2666 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2667 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2668 pulse_indev_deps="libpulse"
2669 pulse_outdev_deps="libpulse"
2670 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2671 qtkit_indev_select="qtkit"
2672 sdl_outdev_deps="sdl"
2673 sndio_indev_deps="sndio_h"
2674 sndio_outdev_deps="sndio_h"
2675 v4l_indev_deps="linux_videodev_h"
2676 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2677 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2678 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2679 vfwcap_indev_extralibs="-lavicap32"
2680 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2681 xv_outdev_extralibs="-lXv -lX11 -lXext"
2682 x11grab_indev_deps="x11grab"
2683 x11grab_xcb_indev_deps="libxcb"
2684
2685 # protocols
2686 async_protocol_deps="pthreads"
2687 bluray_protocol_deps="libbluray"
2688 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2689 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2690 ffrtmpcrypt_protocol_select="tcp_protocol"
2691 ffrtmphttp_protocol_deps="!librtmp_protocol"
2692 ffrtmphttp_protocol_select="http_protocol"
2693 ftp_protocol_select="tcp_protocol"
2694 gopher_protocol_select="network"
2695 http_protocol_select="tcp_protocol"
2696 httpproxy_protocol_select="tcp_protocol"
2697 https_protocol_select="tls_protocol"
2698 icecast_protocol_select="http_protocol"
2699 librtmp_protocol_deps="librtmp"
2700 librtmpe_protocol_deps="librtmp"
2701 librtmps_protocol_deps="librtmp"
2702 librtmpt_protocol_deps="librtmp"
2703 librtmpte_protocol_deps="librtmp"
2704 libsmbclient_protocol_deps="libsmbclient gplv3"
2705 libssh_protocol_deps="libssh"
2706 mmsh_protocol_select="http_protocol"
2707 mmst_protocol_select="network"
2708 rtmp_protocol_deps="!librtmp_protocol"
2709 rtmp_protocol_select="tcp_protocol"
2710 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2711 rtmps_protocol_deps="!librtmp_protocol"
2712 rtmps_protocol_select="tls_protocol"
2713 rtmpt_protocol_select="ffrtmphttp_protocol"
2714 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2715 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2716 rtp_protocol_select="udp_protocol"
2717 sctp_protocol_deps="struct_sctp_event_subscribe"
2718 sctp_protocol_select="network"
2719 srtp_protocol_select="rtp_protocol"
2720 tcp_protocol_select="network"
2721 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2722 tls_gnutls_protocol_select="tcp_protocol"
2723 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2724 tls_openssl_protocol_select="tcp_protocol"
2725 tls_securetransport_protocol_deps="securetransport"
2726 tls_securetransport_protocol_select="tcp_protocol"
2727 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2728 udp_protocol_select="network"
2729 udplite_protocol_select="network"
2730 unix_protocol_deps="sys_un_h"
2731 unix_protocol_select="network"
2732
2733 # filters
2734 amovie_filter_deps="avcodec avformat"
2735 aresample_filter_deps="swresample"
2736 ass_filter_deps="libass"
2737 asyncts_filter_deps="avresample"
2738 atempo_filter_deps="avcodec"
2739 atempo_filter_select="rdft"
2740 azmq_filter_deps="libzmq"
2741 blackframe_filter_deps="gpl"
2742 boxblur_filter_deps="gpl"
2743 bs2b_filter_deps="libbs2b"
2744 colormatrix_filter_deps="gpl"
2745 cover_rect_filter_deps="avcodec avformat gpl"
2746 cropdetect_filter_deps="gpl"
2747 delogo_filter_deps="gpl"
2748 deshake_filter_select="pixelutils"
2749 drawtext_filter_deps="libfreetype"
2750 dynaudnorm_filter_deps="copysign erf"
2751 ebur128_filter_deps="gpl"
2752 eq_filter_deps="gpl"
2753 fftfilt_filter_deps="avcodec"
2754 fftfilt_filter_select="rdft"
2755 flite_filter_deps="libflite"
2756 find_rect_filter_deps="avcodec avformat gpl"
2757 frei0r_filter_deps="frei0r dlopen"
2758 frei0r_src_filter_deps="frei0r dlopen"
2759 fspp_filter_deps="gpl"
2760 geq_filter_deps="gpl"
2761 histeq_filter_deps="gpl"
2762 hqdn3d_filter_deps="gpl"
2763 interlace_filter_deps="gpl"
2764 kerndeint_filter_deps="gpl"
2765 ladspa_filter_deps="ladspa dlopen"
2766 mcdeint_filter_deps="avcodec gpl"
2767 movie_filter_deps="avcodec avformat"
2768 mpdecimate_filter_deps="gpl"
2769 mpdecimate_filter_select="pixelutils"
2770 mptestsrc_filter_deps="gpl"
2771 negate_filter_deps="lut_filter"
2772 perspective_filter_deps="gpl"
2773 pp7_filter_deps="gpl"
2774 ocv_filter_deps="libopencv"
2775 owdenoise_filter_deps="gpl"
2776 pan_filter_deps="swresample"
2777 phase_filter_deps="gpl"
2778 pp_filter_deps="gpl postproc"
2779 pullup_filter_deps="gpl"
2780 removelogo_filter_deps="avcodec avformat swscale"
2781 repeatfields_filter_deps="gpl"
2782 resample_filter_deps="avresample"
2783 sab_filter_deps="gpl swscale"
2784 scale_filter_deps="swscale"
2785 scale2ref_filter_deps="swscale"
2786 select_filter_select="pixelutils"
2787 smartblur_filter_deps="gpl swscale"
2788 showcqt_filter_deps="avcodec"
2789 showcqt_filter_select="fft"
2790 showfreqs_filter_deps="avcodec"
2791 showfreqs_filter_select="fft"
2792 showspectrum_filter_deps="avcodec"
2793 showspectrum_filter_select="rdft"
2794 spp_filter_deps="gpl avcodec"
2795 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2796 stereo3d_filter_deps="gpl"
2797 subtitles_filter_deps="avformat avcodec libass"
2798 super2xsai_filter_deps="gpl"
2799 tinterlace_filter_deps="gpl"
2800 vidstabdetect_filter_deps="libvidstab"
2801 vidstabtransform_filter_deps="libvidstab"
2802 pixfmts_super2xsai_test_deps="super2xsai_filter"
2803 tinterlace_merge_test_deps="tinterlace_filter"
2804 tinterlace_pad_test_deps="tinterlace_filter"
2805 uspp_filter_deps="gpl avcodec"
2806 zmq_filter_deps="libzmq"
2807 zoompan_filter_deps="swscale"
2808
2809 # examples
2810 avio_reading="avformat avcodec avutil"
2811 avio_dir_cmd="avformat avutil"
2812 avcodec_example_deps="avcodec avutil"
2813 decoding_encoding_example_deps="avcodec avformat avutil"
2814 demuxing_decoding_example_deps="avcodec avformat avutil"
2815 extract_mvs_example_deps="avcodec avformat avutil"
2816 filter_audio_example_deps="avfilter avutil"
2817 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2818 filtering_video_example_deps="avfilter avcodec avformat avutil"
2819 metadata_example_deps="avformat avutil"
2820 muxing_example_deps="avcodec avformat avutil swscale"
2821 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2822 remuxing_example_deps="avcodec avformat avutil"
2823 resampling_audio_example_deps="avutil swresample"
2824 scaling_video_example_deps="avutil swscale"
2825 transcode_aac_example_deps="avcodec avformat swresample"
2826 transcoding_example_deps="avfilter avcodec avformat avutil"
2827
2828 # libraries, in linking order
2829 avcodec_deps="avutil"
2830 avdevice_deps="avformat avcodec avutil"
2831 avfilter_deps="avutil"
2832 avformat_deps="avcodec avutil"
2833 avresample_deps="avutil"
2834 postproc_deps="avutil gpl"
2835 swresample_deps="avutil"
2836 swscale_deps="avutil"
2837
2838 # programs
2839 ffmpeg_deps="avcodec avfilter avformat swresample"
2840 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2841                null_filter
2842                setpts_filter trim_filter"
2843 ffplay_deps="avcodec avformat swscale swresample sdl"
2844 ffplay_libs='$sdl_libs'
2845 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2846 ffprobe_deps="avcodec avformat"
2847 ffserver_deps="avformat fork sarestart"
2848 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2849
2850 # documentation
2851 podpages_deps="perl"
2852 manpages_deps="perl pod2man"
2853 htmlpages_deps="perl"
2854 htmlpages_deps_any="makeinfo_html texi2html"
2855 txtpages_deps="perl makeinfo"
2856 doc_deps_any="manpages htmlpages podpages txtpages"
2857
2858 # default parameters
2859
2860 logfile="config.log"
2861
2862 # installation paths
2863 prefix_default="/usr/local"
2864 bindir_default='${prefix}/bin'
2865 datadir_default='${prefix}/share/ffmpeg'
2866 docdir_default='${prefix}/share/doc/ffmpeg'
2867 incdir_default='${prefix}/include'
2868 libdir_default='${prefix}/lib'
2869 mandir_default='${prefix}/share/man'
2870
2871 # toolchain
2872 ar_default="ar"
2873 cc_default="gcc"
2874 cxx_default="g++"
2875 host_cc_default="gcc"
2876 cp_f="cp -f"
2877 doxygen_default="doxygen"
2878 install="install"
2879 ln_s="ln -s -f"
2880 nm_default="nm -g"
2881 objformat="elf"
2882 pkg_config_default=pkg-config
2883 ranlib_default="ranlib"
2884 strip_default="strip"
2885 yasmexe_default="yasm"
2886 windres_default="windres"
2887
2888 # OS
2889 target_os_default=$(tolower $(uname -s))
2890 host_os=$target_os_default
2891
2892 # machine
2893 if test "$target_os_default" = aix; then
2894     arch_default=$(uname -p)
2895     strip_default="strip -X32_64"
2896 else
2897     arch_default=$(uname -m)
2898 fi
2899 cpu="generic"
2900 intrinsics="none"
2901
2902 # configurable options
2903 enable $PROGRAM_LIST
2904 enable $DOCUMENT_LIST
2905 enable $EXAMPLE_LIST
2906 enable $(filter_out avresample $LIBRARY_LIST)
2907 enable stripping
2908
2909 enable asm
2910 enable debug
2911 enable doc
2912 enable faan faandct faanidct
2913 enable optimizations
2914 enable runtime_cpudetect
2915 enable safe_bitstream_reader
2916 enable static
2917 enable swscale_alpha
2918 enable valgrind_backtrace
2919
2920 sws_max_filter_size_default=256
2921 set_default sws_max_filter_size
2922
2923 # Enable hwaccels by default.
2924 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2925 enable xlib
2926
2927 # build settings
2928 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2929 LIBPREF="lib"
2930 LIBSUF=".a"
2931 FULLNAME='$(NAME)$(BUILDSUF)'
2932 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2933 SLIBPREF="lib"
2934 SLIBSUF=".so"
2935 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2936 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2937 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2938 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2939 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2940 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2941
2942 asflags_filter=echo
2943 cflags_filter=echo
2944 ldflags_filter=echo
2945
2946 AS_C='-c'
2947 AS_O='-o $@'
2948 CC_C='-c'
2949 CC_E='-E -o $@'
2950 CC_O='-o $@'
2951 CXX_C='-c'
2952 CXX_O='-o $@'
2953 LD_O='-o $@'
2954 LD_LIB='-l%'
2955 LD_PATH='-L'
2956 HOSTCC_C='-c'
2957 HOSTCC_E='-E -o $@'
2958 HOSTCC_O='-o $@'
2959 HOSTLD_O='-o $@'
2960
2961 host_libs='-lm'
2962 host_cflags_filter=echo
2963 host_ldflags_filter=echo
2964
2965 target_path='$(CURDIR)'
2966
2967 # since the object filename is not given with the -MM flag, the compiler
2968 # is only able to print the basename, and we must add the path ourselves
2969 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2970 DEPFLAGS='-MM'
2971
2972 # find source path
2973 if test -f configure; then
2974     source_path=.
2975 else
2976     source_path=$(cd $(dirname "$0"); pwd)
2977     echo "$source_path" | grep -q '[[:blank:]]' &&
2978         die "Out of tree builds are impossible with whitespace in source path."
2979     test -e "$source_path/config.h" &&
2980         die "Out of tree builds are impossible with config.h in source dir."
2981 fi
2982
2983 for v in "$@"; do
2984     r=${v#*=}
2985     l=${v%"$r"}
2986     r=$(sh_quote "$r")
2987     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2988 done
2989
2990 find_things(){
2991     thing=$1
2992     pattern=$2
2993     file=$source_path/$3
2994     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2995 }
2996
2997 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2998 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2999 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3000 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3001 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3002 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3003 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3004 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3005 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3006 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3007 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3008
3009 ALL_COMPONENTS="
3010     $BSF_LIST
3011     $DECODER_LIST
3012     $DEMUXER_LIST
3013     $ENCODER_LIST
3014     $FILTER_LIST
3015     $HWACCEL_LIST
3016     $INDEV_LIST
3017     $MUXER_LIST
3018     $OUTDEV_LIST
3019     $PARSER_LIST
3020     $PROTOCOL_LIST
3021 "
3022
3023 for n in $COMPONENT_LIST; do
3024     v=$(toupper ${n%s})_LIST
3025     eval enable \$$v
3026     eval ${n}_if_any="\$$v"
3027 done
3028
3029 enable $ARCH_EXT_LIST
3030
3031 die_unknown(){
3032     echo "Unknown option \"$1\"."
3033     echo "See $0 --help for available options."
3034     exit 1
3035 }
3036
3037 print_3_columns() {
3038     cat | tr ' ' '\n' | sort | pr -r -3 -t
3039 }
3040
3041 show_list() {
3042     suffix=_$1
3043     shift
3044     echo $* | sed s/$suffix//g | print_3_columns
3045     exit 0
3046 }
3047
3048 rand_list(){
3049     IFS=', '
3050     set -- $*
3051     unset IFS
3052     for thing; do
3053         comp=${thing%:*}
3054         prob=${thing#$comp}
3055         prob=${prob#:}
3056         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3057         echo "prob ${prob:-0.5}"
3058         printf '%s\n' $comp
3059     done
3060 }
3061
3062 do_random(){
3063     action=$1
3064     shift
3065     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3066     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3067 }
3068
3069 for opt do
3070     optval="${opt#*=}"
3071     case "$opt" in
3072         --extra-ldflags=*)
3073             add_ldflags $optval
3074         ;;
3075         --extra-ldexeflags=*)
3076             add_ldexeflags $optval
3077         ;;
3078         --extra-ldlibflags=*)
3079             add_ldlibflags $optval
3080         ;;
3081         --extra-libs=*)
3082             add_extralibs $optval
3083         ;;
3084         --disable-devices)
3085             disable $INDEV_LIST $OUTDEV_LIST
3086         ;;
3087         --enable-debug=*)
3088             debuglevel="$optval"
3089         ;;
3090         --disable-programs)
3091             disable $PROGRAM_LIST
3092         ;;
3093         --disable-everything)
3094             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3095         ;;
3096         --disable-all)
3097             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3098             disable $LIBRARY_LIST $PROGRAM_LIST doc
3099         ;;
3100         --enable-random|--disable-random)
3101             action=${opt%%-random}
3102             do_random ${action#--} $COMPONENT_LIST
3103         ;;
3104         --enable-random=*|--disable-random=*)
3105             action=${opt%%-random=*}
3106             do_random ${action#--} $optval
3107         ;;
3108         --enable-*=*|--disable-*=*)
3109             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3110             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3111             eval list=\$$(toupper $thing)_LIST
3112             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3113             list=$(filter "$name" $list)
3114             [ "$list" = "" ] && warn "Option $opt did not match anything"
3115             $action $list
3116         ;;
3117         --enable-?*|--disable-?*)
3118             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3119             if is_in $option $COMPONENT_LIST; then
3120                 test $action = disable && action=unset
3121                 eval $action \$$(toupper ${option%s})_LIST
3122             elif is_in $option $CMDLINE_SELECT; then
3123                 $action $option
3124             else
3125                 die_unknown $opt
3126             fi
3127         ;;
3128         --list-*)
3129             NAME="${opt#--list-}"
3130             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3131             NAME=${NAME%s}
3132             eval show_list $NAME \$$(toupper $NAME)_LIST
3133         ;;
3134         --help|-h) show_help
3135         ;;
3136         --fatal-warnings) enable fatal_warnings
3137         ;;
3138         *)
3139             optname="${opt%%=*}"
3140             optname="${optname#--}"
3141             optname=$(echo "$optname" | sed 's/-/_/g')
3142             if is_in $optname $CMDLINE_SET; then
3143                 eval $optname='$optval'
3144             elif is_in $optname $CMDLINE_APPEND; then
3145                 append $optname "$optval"
3146             else
3147                 die_unknown $opt
3148             fi
3149         ;;
3150     esac
3151 done
3152
3153 for e in $env; do
3154     eval "export $e"
3155 done
3156
3157 disabled logging && logfile=/dev/null
3158
3159 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3160 set >> $logfile
3161
3162 test -n "$valgrind" && toolchain="valgrind-memcheck"
3163
3164 case "$toolchain" in
3165     clang-asan)
3166         cc_default="clang"
3167         add_cflags  -fsanitize=address
3168         add_ldflags -fsanitize=address
3169     ;;
3170     clang-tsan)
3171         cc_default="clang"
3172         add_cflags  -fsanitize=thread -pie
3173         add_ldflags -fsanitize=thread -pie
3174     ;;
3175     clang-usan)
3176         cc_default="clang"
3177         add_cflags  -fsanitize=undefined
3178         add_ldflags -fsanitize=undefined
3179     ;;
3180     gcc-asan)
3181         cc_default="gcc"
3182         add_cflags  -fsanitize=address
3183         add_ldflags -fsanitize=address
3184     ;;
3185     gcc-tsan)
3186         cc_default="gcc"
3187         add_cflags  -fsanitize=thread -pie -fPIC
3188         add_ldflags -fsanitize=thread -pie -fPIC
3189     ;;
3190     gcc-usan)
3191         cc_default="gcc"
3192         add_cflags  -fsanitize=undefined
3193         add_ldflags -fsanitize=undefined
3194     ;;
3195     valgrind-massif)
3196         target_exec_default=${valgrind:-"valgrind"}
3197         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"
3198     ;;
3199     valgrind-memcheck)
3200         target_exec_default=${valgrind:-"valgrind"}
3201         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3202     ;;
3203     msvc)
3204         # Check whether the current MSVC version needs the C99 converter.
3205         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3206         # support enough of C99 to build ffmpeg. Default to the new
3207         # behaviour if the regexp was unable to match anything, since this
3208         # successfully parses the version number of existing supported
3209         # versions that require the converter (MSVC 2010 and 2012).
3210         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3211         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3212             cc_default="cl"
3213         else
3214             cc_default="c99wrap cl"
3215         fi
3216         ld_default="$source_path/compat/windows/mslink"
3217         nm_default="dumpbin -symbols"
3218         ar_default="lib"
3219         case "$arch" in
3220         arm*)
3221             as_default="armasm"
3222             ;;
3223         esac
3224         target_os_default="win32"
3225         # Use a relative path for TMPDIR. This makes sure all the
3226         # ffconf temp files are written with a relative path, avoiding
3227         # issues with msys/win32 path conversion for MSVC parameters
3228         # such as -Fo<file> or -out:<file>.
3229         TMPDIR=.
3230     ;;
3231     icl)
3232         cc_default="icl"
3233         ld_default="xilink"
3234         nm_default="dumpbin -symbols"
3235         ar_default="xilib"
3236         target_os_default="win32"
3237         TMPDIR=.
3238     ;;
3239     gcov)
3240         add_cflags  -fprofile-arcs -ftest-coverage
3241         add_ldflags -fprofile-arcs -ftest-coverage
3242     ;;
3243     hardened)
3244         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3245         add_cflags   -fno-strict-overflow -fstack-protector-all
3246         add_ldflags  -Wl,-z,relro -Wl,-z,now
3247     ;;
3248     ?*)
3249         die "Unknown toolchain $toolchain"
3250     ;;
3251 esac
3252
3253 test -n "$cross_prefix" && enable cross_compile
3254
3255 if enabled cross_compile; then
3256     test -n "$arch" && test -n "$target_os" ||
3257         die "Must specify target arch and OS when cross-compiling"
3258 fi
3259
3260 ar_default="${cross_prefix}${ar_default}"
3261 cc_default="${cross_prefix}${cc_default}"
3262 cxx_default="${cross_prefix}${cxx_default}"
3263 nm_default="${cross_prefix}${nm_default}"
3264 pkg_config_default="${cross_prefix}${pkg_config_default}"
3265 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3266     ranlib_default="${cross_prefix}${ranlib_default} -D"
3267 else
3268     ranlib_default="${cross_prefix}${ranlib_default}"
3269 fi
3270 strip_default="${cross_prefix}${strip_default}"
3271 windres_default="${cross_prefix}${windres_default}"
3272
3273 sysinclude_default="${sysroot}/usr/include"
3274
3275 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3276     target_exec target_os yasmexe
3277 enabled cross_compile || host_cc_default=$cc
3278 set_default host_cc
3279
3280 pkg_config_fail_message=""
3281 if ! $pkg_config --version >/dev/null 2>&1; then
3282     warn "$pkg_config not found, library detection may fail."
3283     pkg_config=false
3284 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3285     pkg_config_fail_message="
3286 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3287 fi
3288
3289 if test $doxygen != $doxygen_default && \
3290   ! $doxygen --version >/dev/null 2>&1; then
3291     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3292 fi
3293
3294 exesuf() {
3295     case $1 in
3296         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3297     esac
3298 }
3299
3300 EXESUF=$(exesuf $target_os)
3301 HOSTEXESUF=$(exesuf $host_os)
3302
3303 # set temporary file name
3304 : ${TMPDIR:=$TEMPDIR}
3305 : ${TMPDIR:=$TMP}
3306 : ${TMPDIR:=/tmp}
3307
3308 if [ -n "$tempprefix" ] ; then
3309     mktemp(){
3310         echo $tempprefix.${HOSTNAME}.${UID}
3311     }
3312 elif ! check_cmd mktemp -u XXXXXX; then
3313     # simple replacement for missing mktemp
3314     # NOT SAFE FOR GENERAL USE
3315     mktemp(){
3316         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3317     }
3318 fi
3319
3320 tmpfile(){
3321     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3322         (set -C; exec > $tmp) 2>/dev/null ||
3323         die "Unable to create temporary file in $TMPDIR."
3324     append TMPFILES $tmp
3325     eval $1=$tmp
3326 }
3327
3328 trap 'rm -f -- $TMPFILES' EXIT
3329
3330 tmpfile TMPASM .asm
3331 tmpfile TMPC   .c
3332 tmpfile TMPCPP .cpp
3333 tmpfile TMPE   $EXESUF
3334 tmpfile TMPH   .h
3335 tmpfile TMPM   .m
3336 tmpfile TMPO   .o
3337 tmpfile TMPS   .S
3338 tmpfile TMPSH  .sh
3339 tmpfile TMPV   .ver
3340
3341 unset -f mktemp
3342
3343 chmod +x $TMPE
3344
3345 # make sure we can execute files in $TMPDIR
3346 cat > $TMPSH 2>> $logfile <<EOF
3347 #! /bin/sh
3348 EOF
3349 chmod +x $TMPSH >> $logfile 2>&1
3350 if ! $TMPSH >> $logfile 2>&1; then
3351     cat <<EOF
3352 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3353 variable to another directory and make sure that it is not mounted noexec.
3354 EOF
3355     die "Sanity test failed."
3356 fi
3357
3358 armasm_flags(){
3359     for flag; do
3360         case $flag in
3361             # Filter out MSVC cl.exe options from cflags that shouldn't
3362             # be passed to gas-preprocessor
3363             -M[TD]*)                                            ;;
3364             *)                  echo $flag                      ;;
3365         esac
3366    done
3367 }
3368
3369 ccc_flags(){
3370     for flag; do
3371         case $flag in
3372             -std=c99)           echo -c99                       ;;
3373             -mcpu=*)            echo -arch ${flag#*=}           ;;
3374             -mieee)             echo -ieee                      ;;
3375             -O*|-fast)          echo $flag                      ;;
3376             -fno-math-errno)    echo -assume nomath_errno       ;;
3377             -g)                 echo -g3                        ;;
3378             -Wall)              echo -msg_enable level2         ;;
3379             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3380             -Wl,*)              echo $flag                      ;;
3381             -f*|-W*)                                            ;;
3382             *)                  echo $flag                      ;;
3383         esac
3384    done
3385 }
3386
3387 cparser_flags(){
3388     for flag; do
3389         case $flag in
3390             -Wno-switch)             echo -Wno-switch-enum ;;
3391             -Wno-format-zero-length) ;;
3392             -Wdisabled-optimization) ;;
3393             -Wno-pointer-sign)       echo -Wno-other ;;
3394             *)                       echo $flag ;;
3395         esac
3396     done
3397 }
3398
3399 msvc_common_flags(){
3400     for flag; do
3401         case $flag in
3402             # In addition to specifying certain flags under the compiler
3403             # specific filters, they must be specified here as well or else the
3404             # generic catch all at the bottom will print the original flag.
3405             -Wall)                ;;
3406             -std=c99)             ;;
3407             # Common flags
3408             -fomit-frame-pointer) ;;
3409             -g)                   echo -Z7 ;;
3410             -fno-math-errno)      ;;
3411             -fno-common)          ;;
3412             -fno-signed-zeros)    ;;
3413             -fPIC)                ;;
3414             -mthumb)              ;;
3415             -march=*)             ;;
3416             -lz)                  echo zlib.lib ;;
3417             -lavifil32)           echo vfw32.lib ;;
3418             -lavicap32)           echo vfw32.lib user32.lib ;;
3419             -l*)                  echo ${flag#-l}.lib ;;
3420             -LARGEADDRESSAWARE)   echo $flag ;;
3421             -L*)                  echo -libpath:${flag#-L} ;;
3422             *)                    echo $flag ;;
3423         esac
3424     done
3425 }
3426
3427 msvc_flags(){
3428     msvc_common_flags "$@"
3429     for flag; do
3430         case $flag in
3431             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3432                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3433                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3434                                        -wd4307 \
3435                                        -wd4273 -wd4554 -wd4701 ;;
3436         esac
3437     done
3438 }
3439
3440 icl_flags(){
3441     msvc_common_flags "$@"
3442     for flag; do
3443         case $flag in
3444             # Despite what Intel's documentation says -Wall, which is supported
3445             # on Windows, does enable remarks so disable them here.
3446             -Wall)                echo $flag -Qdiag-disable:remark ;;
3447             -std=c99)             echo -Qstd=c99 ;;
3448             -flto)                echo -ipo ;;
3449         esac
3450     done
3451 }
3452
3453 icc_flags(){
3454     for flag; do
3455         case $flag in
3456             -flto)                echo -ipo ;;
3457             *)                    echo $flag ;;
3458         esac
3459     done
3460 }
3461
3462 pgi_flags(){
3463     for flag; do
3464         case $flag in
3465             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3466             -fomit-frame-pointer) echo -Mnoframe ;;
3467             -g)                   echo -gopt ;;
3468             *)                    echo $flag ;;
3469         esac
3470     done
3471 }
3472
3473 suncc_flags(){
3474     for flag; do
3475         case $flag in
3476             -march=*|-mcpu=*)
3477                 case "${flag#*=}" in
3478                     native)                   echo -xtarget=native       ;;
3479                     v9|niagara)               echo -xarch=sparc          ;;
3480                     ultrasparc)               echo -xarch=sparcvis       ;;
3481                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3482                     i586|pentium)             echo -xchip=pentium        ;;
3483                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3484                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3485                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3486                     pentium4*)          echo -xtarget=pentium4           ;;
3487                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3488                     *-sse3)             echo -xarch=sse3                 ;;
3489                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3490                     bonnell)                   echo -xarch=ssse3         ;;
3491                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3492                     westmere)                  echo -xtarget=westmere    ;;
3493                     silvermont)                echo -xarch=sse4_2        ;;
3494                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3495                     core-avx*|ivybridge|haswell|broadwell)
3496                                                echo -xarch=avx           ;;
3497                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3498                     btver1)                    echo -xarch=amdsse4a      ;;
3499                     btver2|bdver*)             echo -xarch=avx           ;;
3500                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3501                     k8|opteron|athlon64|athlon-fx)
3502                                                echo -xarch=sse2a         ;;
3503                     athlon*)                   echo -xarch=pentium_proa  ;;
3504                 esac
3505                 ;;
3506             -std=c99)             echo -xc99              ;;
3507             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3508             -fPIC)                echo -KPIC -xcode=pic32 ;;
3509             -W*,*)                echo $flag              ;;
3510             -f*-*|-W*|-mimpure-text)                      ;;
3511             -shared)              echo -G                 ;;
3512             *)                    echo $flag              ;;
3513         esac
3514     done
3515 }
3516
3517 tms470_flags(){
3518     for flag; do
3519         case $flag in
3520             -march=*|-mcpu=*)
3521                 case "${flag#*=}" in
3522                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3523                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3524                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3525                     armv6*|arm11*)          echo -mv=6   ;;
3526                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3527                                             echo -mv=5e  ;;
3528                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3529                 esac
3530                 ;;
3531             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3532             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3533             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3534             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3535             -msoft-float)   echo --float_support=vfplib       ;;
3536             -O[0-3]|-mf=*)  echo $flag                        ;;
3537             -g)             echo -g -mn                       ;;
3538             -pds=*)         echo $flag                        ;;
3539             -D*|-I*)        echo $flag                        ;;
3540             --gcc|--abi=*)  echo $flag                        ;;
3541             -me)            echo $flag                        ;;
3542         esac
3543     done
3544 }
3545
3546 probe_cc(){
3547     pfx=$1
3548     _cc=$2
3549
3550     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3551     unset _ld_o _ldflags _ld_lib _ld_path
3552     unset _depflags _DEPCMD _DEPFLAGS
3553     _flags_filter=echo
3554
3555     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3556         true # no-op to avoid reading stdin in following checks
3557     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3558         _type=llvm_gcc
3559         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3560         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3561         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3562         _cflags_speed='-O3'
3563         _cflags_size='-Os'
3564     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3565         _type=gcc
3566         gcc_version=$($_cc --version | head -n1)
3567         gcc_basever=$($_cc -dumpversion)
3568         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3569         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3570         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3571         case $gcc_basever in
3572             2*) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3573         esac
3574         _cflags_speed='-O3'
3575         _cflags_size='-Os'
3576     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3577         _type=icc
3578         _ident=$($_cc --version | head -n1)
3579         _depflags='-MMD'
3580         _cflags_speed='-O3'
3581         _cflags_size='-Os'
3582         _cflags_noopt='-O1'
3583         _flags_filter=icc_flags
3584     elif $_cc -v 2>&1 | grep -q xlc; then
3585         _type=xlc
3586         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3587         _cflags_speed='-O5'
3588         _cflags_size='-O5 -qcompact'
3589     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3590         _type=ccc
3591         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3592         _DEPFLAGS='-M'
3593         _cflags_speed='-fast'
3594         _cflags_size='-O1'
3595         _flags_filter=ccc_flags
3596     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3597         test -d "$sysroot" || die "No valid sysroot specified."
3598         _type=armcc
3599         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3600         armcc_conf="$PWD/armcc.conf"
3601         $_cc --arm_linux_configure                 \
3602              --arm_linux_config_file="$armcc_conf" \
3603              --configure_sysroot="$sysroot"        \
3604              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3605              die "Error creating armcc configuration file."
3606         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3607         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3608         as_default="${cross_prefix}gcc"
3609         _depflags='-MMD'
3610         _cflags_speed='-O3'
3611         _cflags_size='-Os'
3612     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3613         _type=tms470
3614         _ident=$($_cc -version | head -n1 | tr -s ' ')
3615         _flags='--gcc --abi=eabi -me'
3616         _cc_e='-ppl -fe=$@'
3617         _cc_o='-fe=$@'
3618         _depflags='-ppa -ppd=$(@:.o=.d)'
3619         _cflags_speed='-O3 -mf=5'
3620         _cflags_size='-O3 -mf=2'
3621         _flags_filter=tms470_flags
3622     elif $_cc -v 2>&1 | grep -q clang; then
3623         _type=clang
3624         _ident=$($_cc --version 2>/dev/null | head -n1)
3625         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3626         _cflags_speed='-O3'
3627         _cflags_size='-Os'
3628     elif $_cc -V 2>&1 | grep -q Sun; then
3629         _type=suncc
3630         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3631         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3632         _DEPFLAGS='-xM1 -xc99'
3633         _ldflags='-std=c99'
3634         _cflags_speed='-O5'
3635         _cflags_size='-O5 -xspace'
3636         _flags_filter=suncc_flags
3637     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3638         _type=pathscale
3639         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3640         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3641         _cflags_speed='-O2'
3642         _cflags_size='-Os'
3643         _flags_filter='filter_out -Wdisabled-optimization'
3644     elif $_cc -v 2>&1 | grep -q Open64; then
3645         _type=open64
3646         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3647         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3648         _cflags_speed='-O2'
3649         _cflags_size='-Os'
3650         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3651     elif $_cc -V 2>&1 | grep -q Portland; then
3652         _type=pgi
3653         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3654         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3655         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3656         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3657         _cflags_noopt="-O"
3658         _flags_filter=pgi_flags
3659     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3660         _type=armasm
3661         _ident=$($_cc | head -n1)
3662         # 4509: "This form of conditional instruction is deprecated"
3663         _flags="-nologo -ignore 4509"
3664         _flags_filter=armasm_flags
3665     elif $_cc 2>&1 | grep -q Intel; then
3666         _type=icl
3667         _ident=$($_cc 2>&1 | head -n1)
3668         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3669         # Not only is O3 broken on 13.x+ but it is slower on all previous
3670         # versions (tested) as well.
3671         _cflags_speed="-O2"
3672         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3673         if $_cc 2>&1 | grep -q Linker; then
3674             _ld_o='-out:$@'
3675         else
3676             _ld_o='-Fe$@'
3677         fi
3678         _cc_o='-Fo$@'
3679         _cc_e='-P'
3680         _flags_filter=icl_flags
3681         _ld_lib='lib%.a'
3682         _ld_path='-libpath:'
3683         # -Qdiag-error to make icl error when seeing certain unknown arguments
3684         _flags='-nologo -Qdiag-error:4044,10157'
3685         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3686         # with MSVC which enables it by default.
3687         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3688         disable stripping
3689     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3690         _type=msvc
3691         _ident=$($_cc 2>&1 | head -n1)
3692         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3693         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3694         _cflags_speed="-O2"
3695         _cflags_size="-O1"
3696         if $_cc -nologo- 2>&1 | grep -q Linker; then
3697             _ld_o='-out:$@'
3698         else
3699             _ld_o='-Fe$@'
3700         fi
3701         _cc_o='-Fo$@'
3702         _cc_e='-P -Fi$@'
3703         _flags_filter=msvc_flags
3704         _ld_lib='lib%.a'
3705         _ld_path='-libpath:'
3706         _flags='-nologo'
3707         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3708         disable stripping
3709     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3710         _type=cparser
3711         _ident=$($_cc --version | head -n1)
3712         _depflags='-MMD'
3713         _cflags_speed='-O4'
3714         _cflags_size='-O2'
3715         _flags_filter=cparser_flags
3716     fi
3717
3718     eval ${pfx}_type=\$_type
3719     eval ${pfx}_ident=\$_ident
3720 }
3721
3722 set_ccvars(){
3723     eval ${1}_C=\${_cc_c-\${${1}_C}}
3724     eval ${1}_E=\${_cc_e-\${${1}_E}}
3725     eval ${1}_O=\${_cc_o-\${${1}_O}}
3726
3727     if [ -n "$_depflags" ]; then
3728         eval ${1}_DEPFLAGS=\$_depflags
3729     else
3730         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3731         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3732         eval DEP${1}FLAGS=\$_flags
3733     fi
3734 }
3735
3736 probe_cc cc "$cc"
3737 cflags_filter=$_flags_filter
3738 cflags_speed=$_cflags_speed
3739 cflags_size=$_cflags_size
3740 cflags_noopt=$_cflags_noopt
3741 add_cflags $_flags $_cflags
3742 cc_ldflags=$_ldflags
3743 set_ccvars CC
3744
3745 probe_cc hostcc "$host_cc"
3746 host_cflags_filter=$_flags_filter
3747 add_host_cflags  $_flags $_cflags
3748 set_ccvars HOSTCC
3749
3750 test -n "$cc_type" && enable $cc_type ||
3751     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3752
3753 : ${as_default:=$cc}
3754 : ${dep_cc_default:=$cc}
3755 : ${ld_default:=$cc}
3756 : ${host_ld_default:=$host_cc}
3757 set_default ar as dep_cc ld host_ld windres
3758
3759 probe_cc as "$as"
3760 asflags_filter=$_flags_filter
3761 add_asflags $_flags $_cflags
3762 set_ccvars AS
3763
3764 probe_cc ld "$ld"
3765 ldflags_filter=$_flags_filter
3766 add_ldflags $_flags $_ldflags
3767 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3768 LD_O=${_ld_o-$LD_O}
3769 LD_LIB=${_ld_lib-$LD_LIB}
3770 LD_PATH=${_ld_path-$LD_PATH}
3771
3772 probe_cc hostld "$host_ld"
3773 host_ldflags_filter=$_flags_filter
3774 add_host_ldflags $_flags $_ldflags
3775 HOSTLD_O=${_ld_o-$HOSTLD_O}
3776
3777 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3778     probe_cc depcc "$dep_cc"
3779     CCDEP=${_DEPCMD:-$DEPCMD}
3780     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3781     DEPCCFLAGS=$_flags
3782 fi
3783
3784 if $ar 2>&1 | grep -q Microsoft; then
3785     arflags="-nologo"
3786     ar_o='-out:$@'
3787 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3788     arflags="rq"
3789     ar_o='$@'
3790 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3791     arflags='-Xany -r -c'
3792     ar_o='$@'
3793 elif $ar 2>&1 | grep -q "\[D\] "; then
3794     arflags="rcD"
3795     ar_o='$@'
3796 else
3797     arflags="rc"
3798     ar_o='$@'
3799 fi
3800
3801 add_cflags $extra_cflags
3802 add_cxxflags $extra_cxxflags
3803 add_asflags $extra_cflags
3804
3805 if test -n "$sysroot"; then
3806     case "$cc_type" in
3807         gcc|llvm_gcc|clang)
3808             add_cppflags --sysroot="$sysroot"
3809             add_ldflags --sysroot="$sysroot"
3810 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3811             add_cppflags -isysroot "$sysroot"
3812             add_ldflags -isysroot "$sysroot"
3813         ;;
3814         tms470)
3815             add_cppflags -I"$sysinclude"
3816             add_ldflags  --sysroot="$sysroot"
3817         ;;
3818     esac
3819 fi
3820
3821 if test "$cpu" = host; then
3822     enabled cross_compile &&
3823         die "--cpu=host makes no sense when cross-compiling."
3824
3825     case "$cc_type" in
3826         gcc|llvm_gcc)
3827             check_native(){
3828                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3829                 sed -n "/cc1.*$1=/{
3830                             s/.*$1=\\([^ ]*\\).*/\\1/
3831                             p
3832                             q
3833                         }" $TMPE
3834             }
3835             cpu=$(check_native -march || check_native -mcpu)
3836         ;;
3837     esac
3838
3839     test "${cpu:-host}" = host &&
3840         die "--cpu=host not supported with compiler $cc"
3841 fi
3842
3843 # Deal with common $arch aliases
3844 case "$arch" in
3845     aarch64|arm64)
3846         arch="aarch64"
3847     ;;
3848     arm*|iPad*|iPhone*)
3849         arch="arm"
3850     ;;
3851     mips*|IP*)
3852         arch="mips"
3853     ;;
3854     parisc*|hppa*)
3855         arch="parisc"
3856     ;;
3857     "Power Macintosh"|ppc*|powerpc*)
3858         arch="ppc"
3859     ;;
3860     s390|s390x)
3861         arch="s390"
3862     ;;
3863     sh4|sh)
3864         arch="sh4"
3865     ;;
3866     sun4u|sparc*)
3867         arch="sparc"
3868     ;;
3869     tilegx|tile-gx)
3870         arch="tilegx"
3871     ;;
3872     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3873         arch="x86"
3874     ;;
3875 esac
3876
3877 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3878 enable $arch
3879
3880 # Add processor-specific flags
3881 if enabled aarch64; then
3882
3883     case $cpu in
3884         armv*)
3885             cpuflags="-march=$cpu"
3886         ;;
3887         *)
3888             cpuflags="-mcpu=$cpu"
3889         ;;
3890     esac
3891
3892 elif enabled alpha; then
3893
3894     cpuflags="-mcpu=$cpu"
3895
3896 elif enabled arm; then
3897
3898     check_arm_arch() {
3899         check_cpp_condition stddef.h \
3900             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3901             $cpuflags
3902     }
3903
3904     probe_arm_arch() {
3905         if   check_arm_arch 4;        then echo armv4;
3906         elif check_arm_arch 4T;       then echo armv4t;
3907         elif check_arm_arch 5;        then echo armv5;
3908         elif check_arm_arch 5E;       then echo armv5e;
3909         elif check_arm_arch 5T;       then echo armv5t;
3910         elif check_arm_arch 5TE;      then echo armv5te;
3911         elif check_arm_arch 5TEJ;     then echo armv5te;
3912         elif check_arm_arch 6;        then echo armv6;
3913         elif check_arm_arch 6J;       then echo armv6j;
3914         elif check_arm_arch 6K;       then echo armv6k;
3915         elif check_arm_arch 6Z;       then echo armv6z;
3916         elif check_arm_arch 6ZK;      then echo armv6zk;
3917         elif check_arm_arch 6T2;      then echo armv6t2;
3918         elif check_arm_arch 7;        then echo armv7;
3919         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3920         elif check_arm_arch 7S;       then echo armv7-a;
3921         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3922         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3923         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3924         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3925         fi
3926     }
3927
3928     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3929
3930     case $cpu in
3931         armv*)
3932             cpuflags="-march=$cpu"
3933             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3934         ;;
3935         *)
3936             cpuflags="-mcpu=$cpu"
3937             case $cpu in
3938                 cortex-a*)                               subarch=armv7a  ;;
3939                 cortex-r*)                               subarch=armv7r  ;;
3940                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3941                 arm11*)                                  subarch=armv6   ;;
3942                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3943                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3944                 *)                             subarch=$(probe_arm_arch) ;;
3945             esac
3946         ;;
3947     esac
3948
3949     case "$subarch" in
3950         armv5t*)    enable fast_clz                ;;
3951         armv[6-8]*)
3952             enable fast_clz
3953             disabled fast_unaligned || enable fast_unaligned
3954             ;;
3955     esac
3956
3957 elif enabled avr32; then
3958
3959     case $cpu in
3960         ap7[02]0[0-2])
3961             subarch="avr32_ap"
3962             cpuflags="-mpart=$cpu"
3963         ;;
3964         ap)
3965             subarch="avr32_ap"
3966             cpuflags="-march=$cpu"
3967         ;;
3968         uc3[ab]*)
3969             subarch="avr32_uc"
3970             cpuflags="-mcpu=$cpu"
3971         ;;
3972         uc)
3973             subarch="avr32_uc"
3974             cpuflags="-march=$cpu"
3975         ;;
3976     esac
3977
3978 elif enabled bfin; then
3979
3980     cpuflags="-mcpu=$cpu"
3981
3982 elif enabled mips; then
3983
3984     cpuflags="-march=$cpu"
3985
3986     case $cpu in
3987         24kc)
3988             disable mips32r5
3989             disable mips64r6
3990             disable mipsfpu
3991             disable mipsdspr1
3992             disable mipsdspr2
3993             disable msa
3994         ;;
3995         24kf*)
3996             disable mips32r5
3997             disable mips64r6
3998             disable mipsdspr1
3999             disable mipsdspr2
4000             disable msa
4001         ;;
4002         24kec|34kc|1004kc)
4003             disable mips32r5
4004             disable mips64r6
4005             disable mipsfpu
4006             disable mipsdspr2
4007             disable msa
4008         ;;
4009         24kef*|34kf*|1004kf*)
4010             disable mips32r5
4011             disable mips64r6
4012             disable mipsdspr2
4013             disable msa
4014         ;;
4015         74kc)
4016             disable mips32r5
4017             disable mips64r6
4018             disable mipsfpu
4019             disable msa
4020         ;;
4021         74kf)
4022             disable mips32r5
4023             disable mips64r6
4024             disable msa
4025         ;;
4026         p5600)
4027             disable mips64r6
4028             disable mipsdspr1
4029             disable mipsdspr2
4030
4031             check_cflags "-mtune=p5600"
4032         ;;
4033         i6400)
4034             disable mips32r5
4035             disable mipsdspr1
4036             disable mipsdspr2
4037             disable mipsfpu
4038
4039             check_cflags "-mtune=i6400 -mabi=64"
4040             check_ldflags "-mabi=64"
4041         ;;
4042         loongson*)
4043             disable mipsfpu
4044             disable mips32r2
4045             disable mips32r5
4046             disable mips64r6
4047             disable mipsdspr1
4048             disable mipsdspr2
4049             disable msa
4050             enable local_aligned_8 local_aligned_16 local_aligned_32
4051             enable simd_align_16
4052             enable fast_64bit
4053             enable fast_clz
4054             enable fast_cmov
4055             enable fast_unaligned
4056             disable aligned_stack
4057             case $cpu in
4058                 loongson3*)
4059                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4060                 ;;
4061                 loongson2e)
4062                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4063                 ;;
4064                 loongson2f)
4065                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4066                 ;;
4067             esac
4068         ;;
4069         generic)
4070             disable mips32r5
4071             disable mips64r6
4072             disable msa
4073         ;;
4074     esac
4075
4076 elif enabled ppc; then
4077
4078     disable ldbrx
4079
4080     case $(tolower $cpu) in
4081         601|ppc601|powerpc601)
4082             cpuflags="-mcpu=601"
4083             disable altivec
4084         ;;
4085         603*|ppc603*|powerpc603*)
4086             cpuflags="-mcpu=603"
4087             disable altivec
4088         ;;
4089         604*|ppc604*|powerpc604*)
4090             cpuflags="-mcpu=604"
4091             disable altivec
4092         ;;
4093         g3|75*|ppc75*|powerpc75*)
4094             cpuflags="-mcpu=750"
4095             disable altivec
4096         ;;
4097         g4|745*|ppc745*|powerpc745*)
4098             cpuflags="-mcpu=7450"
4099             disable vsx
4100         ;;
4101         74*|ppc74*|powerpc74*)
4102             cpuflags="-mcpu=7400"
4103             disable vsx
4104         ;;
4105         g5|970|ppc970|powerpc970)
4106             cpuflags="-mcpu=970"
4107             disable vsx
4108         ;;
4109         power[3-6]*)
4110             cpuflags="-mcpu=$cpu"
4111             disable vsx
4112         ;;
4113         power[7-8]*)
4114             cpuflags="-mcpu=$cpu"
4115         ;;
4116         cell)
4117             cpuflags="-mcpu=cell"
4118             enable ldbrx
4119             disable vsx
4120         ;;
4121         e500mc)
4122             cpuflags="-mcpu=e500mc"
4123             disable altivec
4124         ;;
4125         e500v2)
4126             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4127             disable altivec
4128             disable dcbzl
4129         ;;
4130         e500)
4131             cpuflags="-mcpu=8540 -mhard-float"
4132             disable altivec
4133             disable dcbzl
4134         ;;
4135     esac
4136
4137 elif enabled sparc; then
4138
4139     case $cpu in
4140         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4141             cpuflags="-mcpu=$cpu"
4142         ;;
4143         ultrasparc*|niagara[234])
4144             cpuflags="-mcpu=$cpu"
4145         ;;
4146     esac
4147
4148 elif enabled x86; then
4149
4150     case $cpu in
4151         i[345]86|pentium)
4152             cpuflags="-march=$cpu"
4153             disable i686
4154             disable mmx
4155         ;;
4156         # targets that do NOT support nopl and conditional mov (cmov)
4157         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4158             cpuflags="-march=$cpu"
4159             disable i686
4160         ;;
4161         # targets that do support nopl and conditional mov (cmov)
4162         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4163         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4164             cpuflags="-march=$cpu"
4165             enable i686
4166             enable fast_cmov
4167         ;;
4168         # targets that do support conditional mov but on which it's slow
4169         pentium4|pentium4m|prescott|nocona)
4170             cpuflags="-march=$cpu"
4171             enable i686
4172             disable fast_cmov
4173         ;;
4174     esac
4175
4176 fi
4177
4178 if [ "$cpu" != generic ]; then
4179     add_cflags  $cpuflags
4180     add_asflags $cpuflags
4181 fi
4182
4183 # compiler sanity check
4184 check_exec <<EOF
4185 int main(void){ return 0; }
4186 EOF
4187 if test "$?" != 0; then
4188     echo "$cc is unable to create an executable file."
4189     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4190         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4191         echo "Only do this if you know what cross compiling means."
4192     fi
4193     die "C compiler test failed."
4194 fi
4195
4196 add_cppflags -D_ISOC99_SOURCE
4197 add_cxxflags -D__STDC_CONSTANT_MACROS
4198 check_cflags -std=c99
4199 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4200 #include <stdlib.h>
4201 EOF
4202 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4203 #include <stdlib.h>
4204 EOF
4205
4206 add_host_cppflags -D_ISOC99_SOURCE
4207 check_host_cflags -std=c99
4208 check_host_cflags -Wall
4209 check_host_cflags -O3
4210
4211 check_64bit(){
4212     arch32=$1
4213     arch64=$2
4214     expr=$3
4215     check_code cc "" "int test[2*($expr) - 1]" &&
4216         subarch=$arch64 || subarch=$arch32
4217 }
4218
4219 case "$arch" in
4220     aarch64|alpha|ia64)
4221         spic=$shared
4222     ;;
4223     mips)
4224         check_64bit mips mips64 '_MIPS_SIM > 1'
4225         spic=$shared
4226     ;;
4227     parisc)
4228         check_64bit parisc parisc64 'sizeof(void *) > 4'
4229         spic=$shared
4230     ;;
4231     ppc)
4232         check_64bit ppc ppc64 'sizeof(void *) > 4'
4233         spic=$shared
4234     ;;
4235     s390)
4236         check_64bit s390 s390x 'sizeof(void *) > 4'
4237         spic=$shared
4238     ;;
4239     sparc)
4240         check_64bit sparc sparc64 'sizeof(void *) > 4'
4241         spic=$shared
4242     ;;
4243     x86)
4244         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4245         # Treat x32 as x64 for now. Note it also needs spic=$shared
4246         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4247             subarch=x86_64
4248         if test "$subarch" = "x86_64"; then
4249             spic=$shared
4250         fi
4251     ;;
4252     ppc)
4253         check_cc <<EOF && subarch="ppc64"
4254         int test[(int)sizeof(char*) - 7];
4255 EOF
4256     ;;
4257 esac
4258
4259 enable $subarch
4260 enabled spic && enable_weak pic
4261
4262 # OS specific
4263 case $target_os in
4264     aix)
4265         SHFLAGS=-shared
4266         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4267         enabled shared && add_ldflags -Wl,-brtl
4268         ;;
4269     android)
4270         disable symver
4271         enable section_data_rel_ro
4272         SLIB_INSTALL_NAME='$(SLIBNAME)'
4273         SLIB_INSTALL_LINKS=
4274         # soname not set on purpose
4275         SHFLAGS=-shared
4276         ;;
4277     haiku)
4278         prefix_default="/boot/common"
4279         network_extralibs="-lnetwork"
4280         host_libs=
4281         ;;
4282     sunos)
4283         SHFLAGS='-shared -Wl,-h,$$(@F)'
4284         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4285         network_extralibs="-lsocket -lnsl"
4286         add_cppflags -D__EXTENSIONS__
4287         # When using suncc to build, the Solaris linker will mark
4288         # an executable with each instruction set encountered by
4289         # the Solaris assembler.  As our libraries contain their own
4290         # guards for processor-specific code, instead suppress
4291         # generation of the HWCAPS ELF section on Solaris x86 only.
4292         enabled_all suncc x86 &&
4293             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4294             add_ldflags -Wl,-M,mapfile
4295         nm_default='nm -P -g'
4296         ;;
4297     netbsd)
4298         disable symver
4299         oss_indev_extralibs="-lossaudio"
4300         oss_outdev_extralibs="-lossaudio"
4301         enabled gcc || check_ldflags -Wl,-zmuldefs
4302         ;;
4303     openbsd|bitrig)
4304         disable symver
4305         SHFLAGS='-shared'
4306         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4307         SLIB_INSTALL_LINKS=
4308         oss_indev_extralibs="-lossaudio"
4309         oss_outdev_extralibs="-lossaudio"
4310         ;;
4311     dragonfly)
4312         disable symver
4313         ;;
4314     freebsd)
4315         ;;
4316     bsd/os)
4317         add_extralibs -lpoll -lgnugetopt
4318         strip="strip -d"
4319         ;;
4320     darwin)
4321         enabled ppc && add_asflags -force_cpusubtype_ALL
4322         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4323         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4324         strip="${strip} -x"
4325         add_ldflags -Wl,-dynamic,-search_paths_first
4326         SLIBSUF=".dylib"
4327         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4328         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4329         objformat="macho"
4330         enabled x86_64 && objformat="macho64"
4331         enabled_any pic shared x86_64 ||
4332             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4333         ;;
4334     mingw32*)
4335         if test $target_os = "mingw32ce"; then
4336             disable network
4337         else
4338             target_os=mingw32
4339         fi
4340         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4341         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4342         LIBTARGET=i386
4343         if enabled x86_64; then
4344             LIBTARGET="i386:x86-64"
4345         elif enabled arm; then
4346             LIBTARGET=arm-wince
4347         fi
4348         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4349         check_ldflags -Wl,--nxcompat
4350         check_ldflags -Wl,--dynamicbase
4351         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4352         shlibdir_default="$bindir_default"
4353         SLIBPREF=""
4354         SLIBSUF=".dll"
4355         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4356         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4357         dlltool="${cross_prefix}dlltool"
4358         if check_cmd lib.exe -list; then
4359             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4360             if enabled x86_64; then
4361                 LIBTARGET=x64
4362             fi
4363         elif check_cmd $dlltool --version; then
4364             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4365         fi
4366         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4367         SLIB_INSTALL_LINKS=
4368         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4369         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4370         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4371         objformat="win32"
4372         ranlib=:
4373         enable dos_paths
4374         ;;
4375     win32|win64)
4376         disable symver
4377         if enabled shared; then
4378             # Link to the import library instead of the normal static library
4379             # for shared libs.
4380             LD_LIB='%.lib'
4381             # Cannot build both shared and static libs with MSVC or icl.
4382             disable static
4383         fi
4384         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4385         shlibdir_default="$bindir_default"
4386         SLIBPREF=""
4387         SLIBSUF=".dll"
4388         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4389         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4390         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4391         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4392         SLIB_INSTALL_LINKS=
4393         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4394         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4395         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4396         objformat="win32"
4397         ranlib=:
4398         enable dos_paths
4399         ;;
4400     cygwin*)
4401         target_os=cygwin
4402         shlibdir_default="$bindir_default"
4403         SLIBPREF="cyg"
4404         SLIBSUF=".dll"
4405         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4406         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4407         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4408         SLIB_INSTALL_LINKS=
4409         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4410         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4411         objformat="win32"
4412         enable dos_paths
4413         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4414         ;;
4415     *-dos|freedos|opendos)
4416         network_extralibs="-lsocket"
4417         objformat="coff"
4418         enable dos_paths
4419         add_cppflags -U__STRICT_ANSI__
4420         ;;
4421     linux)
4422         enable dv1394
4423         enable section_data_rel_ro
4424         ;;
4425     irix*)
4426         target_os=irix
4427         ranlib="echo ignoring ranlib"
4428         ;;
4429     os/2*)
4430         strip="lxlite -CS"
4431         ln_s="cp -f"
4432         objformat="aout"
4433         add_cppflags -D_GNU_SOURCE
4434         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4435         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4436         LIBSUF="_s.a"
4437         SLIBPREF=""
4438         SLIBSUF=".dll"
4439         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4440         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4441         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4442             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4443             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4444             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4445             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4446         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4447             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4448         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4449         enable dos_paths
4450         enable_weak os2threads
4451         ;;
4452     gnu/kfreebsd)
4453         add_cppflags -D_BSD_SOURCE
4454         ;;
4455     gnu)
4456         ;;
4457     qnx)
4458         add_cppflags -D_QNX_SOURCE
4459         network_extralibs="-lsocket"
4460         ;;
4461     symbian)
4462         SLIBSUF=".dll"
4463         enable dos_paths
4464         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4465         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4466         add_ldflags -Wl,--target1-abs,--no-undefined \
4467                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4468                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4469         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4470                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4471                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4472         ;;
4473     osf1)
4474         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4475         ;;
4476     minix)
4477         ;;
4478     plan9)
4479         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4480                      -D_REENTRANT_SOURCE        \
4481                      -D_RESEARCH_SOURCE         \
4482                      -DFD_SETSIZE=96            \
4483                      -DHAVE_SOCK_OPTS
4484         add_compat strtod.o strtod=avpriv_strtod
4485         network_extralibs='-lbsd'
4486         exeobjs=compat/plan9/main.o
4487         disable ffserver
4488         cp_f='cp'
4489         ;;
4490     none)
4491         ;;
4492     *)
4493         die "Unknown OS '$target_os'."
4494         ;;
4495 esac
4496
4497 # determine libc flavour
4498
4499 probe_libc(){
4500     pfx=$1
4501     pfx_no_=${pfx%_}
4502     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4503     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4504         eval ${pfx}libc_type=uclibc
4505         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4506     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4507         eval ${pfx}libc_type=glibc
4508         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4509     # MinGW headers can be installed on Cygwin, so check for newlib first.
4510     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4511         eval ${pfx}libc_type=newlib
4512         add_${pfx}cppflags -U__STRICT_ANSI__
4513     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4514     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4515         eval ${pfx}libc_type=mingw64
4516         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4517             add_compat msvcrt/snprintf.o
4518             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4519         fi
4520         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4521         eval test \$${pfx_no_}cc_type = "gcc" &&
4522             add_${pfx}cppflags -D__printf__=__gnu_printf__
4523     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4524          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4525         eval ${pfx}libc_type=mingw32
4526         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4527             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4528             die "ERROR: MinGW32 runtime version must be >= 3.15."
4529         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4530         eval test \$${pfx_no_}cc_type = "gcc" &&
4531             add_${pfx}cppflags -D__printf__=__gnu_printf__
4532     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4533         eval ${pfx}libc_type=msvcrt
4534         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4535             if [ "$pfx" = host_ ]; then
4536                 add_host_cppflags -Dsnprintf=_snprintf
4537             else
4538                 add_compat strtod.o strtod=avpriv_strtod
4539                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4540                                              _snprintf=avpriv_snprintf  \
4541                                              vsnprintf=avpriv_vsnprintf
4542             fi
4543         fi
4544         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4545         # 0x601 by default unless something else is set by the user.
4546         # This can easily lead to us detecting functions only present
4547         # in such new versions and producing binaries requiring windows 7.0.
4548         # Therefore explicitly set the default to XP unless the user has
4549         # set something else on the command line.
4550         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4551         # family. For these cases, configure is free to use any functions
4552         # found in the SDK headers by default. (Alternatively, we could force
4553         # _WIN32_WINNT to 0x0602 in that case.)
4554         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4555             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4556 #ifdef WINAPI_FAMILY
4557 #include <winapifamily.h>
4558 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4559 #error not desktop
4560 #endif
4561 #endif
4562 EOF
4563     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4564         eval ${pfx}libc_type=klibc
4565     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4566         eval ${pfx}libc_type=bionic
4567     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4568         eval ${pfx}libc_type=solaris
4569         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4570     fi
4571     check_${pfx}cc <<EOF
4572 #include <time.h>
4573 void *v = localtime_r;
4574 EOF
4575 test "$?" != 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
4576 #include <time.h>
4577 void *v = localtime_r;
4578 EOF
4579
4580 }
4581
4582 probe_libc
4583 test -n "$libc_type" && enable libc_$libc_type
4584 probe_libc host_
4585 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4586
4587 case $libc_type in
4588     bionic)
4589         add_compat strtod.o strtod=avpriv_strtod
4590         ;;
4591 esac
4592
4593 # hacks for compiler/libc/os combinations
4594
4595 if enabled_all tms470 libc_glibc; then
4596     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4597     add_cppflags -D__USER_LABEL_PREFIX__=
4598     add_cppflags -D__builtin_memset=memset
4599     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4600     add_cflags   -pds=48    # incompatible redefinition of macro
4601 fi
4602
4603 if enabled_all ccc libc_glibc; then
4604     add_ldflags -Wl,-z,now  # calls to libots crash without this
4605 fi
4606
4607 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4608     add_cppflags '-I\$(SRC_PATH)/compat/float'
4609
4610 esc(){
4611     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4612 }
4613
4614 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4615
4616 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4617
4618 set_default libdir
4619 : ${shlibdir_default:="$libdir"}
4620 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4621
4622 set_default $PATHS_LIST
4623 set_default nm
4624
4625 # we need to build at least one lib type
4626 if ! enabled_any static shared; then
4627     cat <<EOF
4628 At least one library type must be built.
4629 Specify --enable-static to build the static libraries or --enable-shared to
4630 build the shared libraries as well. To only build the shared libraries specify
4631 --disable-static in addition to --enable-shared.
4632 EOF
4633     exit 1;
4634 fi
4635
4636 die_license_disabled() {
4637     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4638 }
4639
4640 die_license_disabled_gpl() {
4641     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4642 }
4643
4644 die_license_disabled gpl frei0r
4645 die_license_disabled gpl libcdio
4646 die_license_disabled gpl libsmbclient
4647 die_license_disabled gpl libutvideo
4648 die_license_disabled gpl libvidstab
4649 die_license_disabled gpl libx264
4650 die_license_disabled gpl libx265
4651 die_license_disabled gpl libxavs
4652 die_license_disabled gpl libxvid
4653 die_license_disabled gpl libzvbi
4654 die_license_disabled gpl x11grab
4655
4656 die_license_disabled nonfree libaacplus
4657 die_license_disabled nonfree libfaac
4658 die_license_disabled nonfree nvenc
4659 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4660 enabled gpl && die_license_disabled_gpl nonfree openssl
4661
4662 die_license_disabled version3 libopencore_amrnb
4663 die_license_disabled version3 libopencore_amrwb
4664 die_license_disabled version3 libsmbclient
4665 die_license_disabled version3 libvo_aacenc
4666 die_license_disabled version3 libvo_amrwbenc
4667
4668 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4669
4670 disabled optimizations || check_cflags -fomit-frame-pointer
4671
4672 enable_weak_pic() {
4673     disabled pic && return
4674     enable pic
4675     add_cppflags -DPIC
4676     case "$target_os" in
4677     mingw*|cygwin*)
4678         ;;
4679     *)
4680         add_cflags -fPIC
4681         ;;
4682     esac
4683     add_asflags  -fPIC
4684 }
4685
4686 enabled pic && enable_weak_pic
4687
4688 check_cc <<EOF || die "Symbol mangling check failed."
4689 int ff_extern;
4690 EOF
4691 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4692 extern_prefix=${sym%%ff_extern*}
4693
4694 check_cc <<EOF && enable_weak inline_asm
4695 void foo(void) { __asm__ volatile ("" ::); }
4696 EOF
4697
4698 _restrict=
4699 for restrict_keyword in restrict __restrict__ __restrict; do
4700     check_cc <<EOF && _restrict=$restrict_keyword && break
4701 void foo(char * $restrict_keyword p);
4702 EOF
4703 done
4704
4705 check_cc <<EOF && enable pragma_deprecated
4706 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4707 EOF
4708
4709 check_cc <<EOF && enable attribute_packed
4710 struct { int x; } __attribute__((packed)) x;
4711 EOF
4712
4713 check_cc <<EOF && enable attribute_may_alias
4714 union { int x; } __attribute__((may_alias)) x;
4715 EOF
4716
4717 check_cc <<EOF || die "endian test failed"
4718 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4719 EOF
4720 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4721
4722 if ! enabled ppc64 || enabled bigendian; then
4723     disable vsx
4724 fi
4725
4726 check_gas() {
4727     log "check_gas using '$as' as AS"
4728     # :vararg is used on aarch64, arm and ppc altivec
4729     check_as <<EOF || return 1
4730 .macro m n, y:vararg=0
4731 \n: .int \y
4732 .endm
4733 m x
4734 EOF
4735     # .altmacro is only used in arm asm
4736     ! enabled arm || check_as <<EOF || return 1
4737 .altmacro
4738 EOF
4739     enable gnu_as
4740     return 0
4741 }
4742
4743 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4744     nogas=:
4745     enabled_any arm aarch64 && nogas=die
4746     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4747     as_noop=-v
4748
4749     case $as_type in
4750         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4751         gcc)  gaspp_as_type=gas ;;
4752         *)    gaspp_as_type=$as_type ;;
4753     esac
4754
4755     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4756
4757     test "${as#*gas-preprocessor.pl}" != "$as" ||
4758     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4759         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4760
4761     if ! check_gas ; then
4762         as=${gas:=$as}
4763         check_gas || \
4764             $nogas "GNU assembler not found, install/update gas-preprocessor"
4765     fi
4766
4767     check_as <<EOF && enable as_func
4768 .func test
4769 .endfunc
4770 EOF
4771 fi
4772
4773 check_inline_asm inline_asm_labels '"1:\n"'
4774
4775 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4776
4777 if enabled aarch64; then
4778     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4779     # internal assembler in clang 3.3 does not support this instruction
4780     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4781     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4782
4783     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4784
4785 elif enabled alpha; then
4786
4787     check_cflags -mieee
4788
4789 elif enabled arm; then
4790
4791     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4792
4793     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4794 float func(float a, float b){ return a+b; }
4795 EOF
4796
4797     enabled thumb && check_cflags -mthumb || check_cflags -marm
4798
4799     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4800         enable vfp_args
4801     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4802         enable vfp_args
4803     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4804         case "${cross_prefix:-$cc}" in
4805             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4806             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4807 __asm__ (".eabi_attribute 28, 1");
4808 int main(void) { return 0; }
4809 EOF
4810         esac
4811         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4812     fi
4813
4814     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4815     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4816     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4817     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4818     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4819     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4820     enabled setend  && check_insn setend  'setend be'
4821
4822     [ $target_os = linux ] || [ $target_os = android ] ||
4823         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4824             $ARCH_EXT_LIST_ARM
4825
4826     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4827
4828     check_as <<EOF && enable as_dn_directive
4829 ra .dn d0.i16
4830 .unreq ra
4831 EOF
4832
4833     # llvm's integrated assembler supports .object_arch from llvm 3.5
4834     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4835 .object_arch armv4
4836 EOF
4837
4838     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4839
4840 elif enabled mips; then
4841
4842     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4843     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4844     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4845
4846     # Enable minimum ISA based on selected options
4847     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4848         add_cflags "-mips64r2"
4849         add_asflags "-mips64r2"
4850     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4851         add_cflags "-mips64"
4852         add_asflags "-mips64"
4853     elif enabled mipsdspr1 || enabled mipsdspr2; then
4854         add_cflags "-mips32r2 -mfp32"
4855         add_asflags "-mips32r2 -mfp32"
4856     elif enabled mips32r5 || enabled mips64r6; then
4857         check_cflags "-mfp64"
4858         check_ldflags "-mfp64"
4859     fi
4860
4861     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4862      check_ldflags "-mips32r5" &&
4863      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4864     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4865      check_ldflags "-mips64r6" &&
4866      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4867     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4868      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4869     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4870      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4871     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4872      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4873     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4874      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4875
4876     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"</