Merge commit '515b69f8f8e9a24cfaee95d8c1f63f265d8582fe'
[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     dlfcn_h
1696     d3d11_h
1697     dxva_h
1698     ES2_gl_h
1699     gsm_h
1700     io_h
1701     mach_mach_time_h
1702     machine_ioctl_bt848_h
1703     machine_ioctl_meteor_h
1704     malloc_h
1705     openjpeg_1_5_openjpeg_h
1706     OpenGL_gl3_h
1707     poll_h
1708     sndio_h
1709     soundcard_h
1710     sys_mman_h
1711     sys_param_h
1712     sys_resource_h
1713     sys_select_h
1714     sys_soundcard_h
1715     sys_time_h
1716     sys_un_h
1717     sys_videoio_h
1718     termios_h
1719     udplite_h
1720     unistd_h
1721     valgrind_valgrind_h
1722     windows_h
1723     winsock2_h
1724 "
1725
1726 INTRINSICS_LIST="
1727     intrinsics_neon
1728 "
1729
1730 MATH_FUNCS="
1731     atanf
1732     atan2f
1733     cbrt
1734     cbrtf
1735     copysign
1736     cosf
1737     erf
1738     exp2
1739     exp2f
1740     expf
1741     isinf
1742     isnan
1743     ldexpf
1744     llrint
1745     llrintf
1746     log2
1747     log2f
1748     log10f
1749     lrint
1750     lrintf
1751     powf
1752     rint
1753     round
1754     roundf
1755     sinf
1756     trunc
1757     truncf
1758 "
1759
1760 SYSTEM_FUNCS="
1761     access
1762     aligned_malloc
1763     clock_gettime
1764     closesocket
1765     CommandLineToArgvW
1766     CoTaskMemFree
1767     CryptGenRandom
1768     dlopen
1769     fcntl
1770     flt_lim
1771     fork
1772     getaddrinfo
1773     gethrtime
1774     getopt
1775     GetProcessAffinityMask
1776     GetProcessMemoryInfo
1777     GetProcessTimes
1778     getrusage
1779     getservbyport
1780     GetSystemTimeAsFileTime
1781     gettimeofday
1782     glob
1783     glXGetProcAddress
1784     gmtime_r
1785     inet_aton
1786     isatty
1787     jack_port_get_latency_range
1788     kbhit
1789     localtime_r
1790     lzo1x_999_compress
1791     mach_absolute_time
1792     MapViewOfFile
1793     memalign
1794     mkstemp
1795     mmap
1796     mprotect
1797     nanosleep
1798     PeekNamedPipe
1799     posix_memalign
1800     pthread_cancel
1801     sched_getaffinity
1802     SetConsoleTextAttribute
1803     SetConsoleCtrlHandler
1804     setmode
1805     setrlimit
1806     Sleep
1807     strerror_r
1808     sysconf
1809     sysctl
1810     usleep
1811     VirtualAlloc
1812     wglGetProcAddress
1813 "
1814
1815 TOOLCHAIN_FEATURES="
1816     as_dn_directive
1817     as_func
1818     as_object_arch
1819     asm_mod_q
1820     attribute_may_alias
1821     attribute_packed
1822     ebp_available
1823     ebx_available
1824     gnu_as
1825     gnu_windres
1826     ibm_asm
1827     inline_asm_labels
1828     inline_asm_nonlocal_labels
1829     inline_asm_direct_symbol_refs
1830     pragma_deprecated
1831     rsync_contimeout
1832     symver_asm_label
1833     symver_gnu_asm
1834     vfp_args
1835     xform_asm
1836     xmm_clobbers
1837 "
1838
1839 TYPES_LIST="
1840     CONDITION_VARIABLE_Ptr
1841     socklen_t
1842     struct_addrinfo
1843     struct_dcadec_exss_info_matrix_encoding
1844     struct_group_source_req
1845     struct_ip_mreq_source
1846     struct_ipv6_mreq
1847     struct_pollfd
1848     struct_rusage_ru_maxrss
1849     struct_sctp_event_subscribe
1850     struct_sockaddr_in6
1851     struct_sockaddr_sa_len
1852     struct_sockaddr_storage
1853     struct_stat_st_mtim_tv_nsec
1854     struct_v4l2_frmivalenum_discrete
1855 "
1856
1857 HAVE_LIST="
1858     $ARCH_EXT_LIST
1859     $(add_suffix _external $ARCH_EXT_LIST)
1860     $(add_suffix _inline   $ARCH_EXT_LIST)
1861     $ARCH_FEATURES
1862     $ATOMICS_LIST
1863     $BUILTIN_LIST
1864     $HAVE_LIST_CMDLINE
1865     $HAVE_LIST_PUB
1866     $HEADERS_LIST
1867     $INTRINSICS_LIST
1868     $MATH_FUNCS
1869     $SYSTEM_FUNCS
1870     $THREADS_LIST
1871     $TOOLCHAIN_FEATURES
1872     $TYPES_LIST
1873     atomics_native
1874     dos_paths
1875     dxva2api_cobj
1876     dxva2_lib
1877     libc_msvcrt
1878     libdc1394_1
1879     libdc1394_2
1880     makeinfo
1881     makeinfo_html
1882     perl
1883     pod2man
1884     sdl
1885     section_data_rel_ro
1886     texi2html
1887     threads
1888     vaapi_x11
1889     vdpau_x11
1890     xlib
1891 "
1892
1893 # options emitted with CONFIG_ prefix but not available on the command line
1894 CONFIG_EXTRA="
1895     aandcttables
1896     ac3dsp
1897     audio_frame_queue
1898     audiodsp
1899     blockdsp
1900     bswapdsp
1901     cabac
1902     dvprofile
1903     exif
1904     faandct
1905     faanidct
1906     fdctdsp
1907     flacdsp
1908     fmtconvert
1909     frame_thread_encoder
1910     g722dsp
1911     gcrypt
1912     gmp
1913     golomb
1914     gplv3
1915     h263dsp
1916     h264chroma
1917     h264dsp
1918     h264pred
1919     h264qpel
1920     hpeldsp
1921     huffman
1922     huffyuvdsp
1923     huffyuvencdsp
1924     idctdsp
1925     iirfilter
1926     imdct15
1927     intrax8
1928     ividsp
1929     jpegtables
1930     libx262
1931     lgplv3
1932     llauddsp
1933     llviddsp
1934     lpc
1935     me_cmp
1936     mpeg_er
1937     mpegaudio
1938     mpegaudiodsp
1939     mpegvideo
1940     mpegvideoenc
1941     mss34dsp
1942     pixblockdsp
1943     qpeldsp
1944     qsv
1945     qsvdec
1946     qsvenc
1947     rangecoder
1948     riffdec
1949     riffenc
1950     rtpdec
1951     rtpenc_chain
1952     rv34dsp
1953     sinewin
1954     snappy
1955     startcode
1956     texturedsp
1957     texturedspenc
1958     tpeldsp
1959     videodsp
1960     vp3dsp
1961     vp56dsp
1962     vp8dsp
1963     wma_freqs
1964     wmv2dsp
1965 "
1966
1967 CMDLINE_SELECT="
1968     $ARCH_EXT_LIST
1969     $CONFIG_LIST
1970     $HAVE_LIST_CMDLINE
1971     $THREADS_LIST
1972     asm
1973     cross_compile
1974     debug
1975     extra_warnings
1976     logging
1977     lto
1978     optimizations
1979     rpath
1980     stripping
1981 "
1982
1983 PATHS_LIST="
1984     bindir
1985     datadir
1986     docdir
1987     incdir
1988     libdir
1989     mandir
1990     pkgconfigdir
1991     prefix
1992     shlibdir
1993 "
1994
1995 CMDLINE_SET="
1996     $PATHS_LIST
1997     ar
1998     arch
1999     as
2000     assert_level
2001     build_suffix
2002     cc
2003     cpu
2004     cross_prefix
2005     cxx
2006     dep_cc
2007     doxygen
2008     env
2009     extra_version
2010     gas
2011     host_cc
2012     host_cflags
2013     host_ld
2014     host_ldflags
2015     host_libs
2016     host_os
2017     install
2018     ld
2019     logfile
2020     malloc_prefix
2021     nm
2022     optflags
2023     pkg_config
2024     pkg_config_flags
2025     progs_suffix
2026     random_seed
2027     ranlib
2028     samples
2029     strip
2030     sws_max_filter_size
2031     sysinclude
2032     sysroot
2033     target_exec
2034     target_os
2035     target_path
2036     target_samples
2037     tempprefix
2038     toolchain
2039     valgrind
2040     yasmexe
2041 "
2042
2043 CMDLINE_APPEND="
2044     extra_cflags
2045     extra_cxxflags
2046     host_cppflags
2047 "
2048
2049 # code dependency declarations
2050
2051 # architecture extensions
2052
2053 armv5te_deps="arm"
2054 armv6_deps="arm"
2055 armv6t2_deps="arm"
2056 armv8_deps="aarch64"
2057 neon_deps_any="aarch64 arm"
2058 intrinsics_neon_deps="neon"
2059 vfp_deps_any="aarch64 arm"
2060 vfpv3_deps="vfp"
2061 setend_deps="arm"
2062
2063 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2064
2065 mipsfpu_deps="mips"
2066 mipsdspr1_deps="mips"
2067 mipsdspr2_deps="mips"
2068 mips32r2_deps="mips"
2069 mips32r5_deps="mips"
2070 mips64r6_deps="mips"
2071 msa_deps="mips"
2072 mmi_deps="mips"
2073
2074 altivec_deps="ppc"
2075 dcbzl_deps="ppc"
2076 ldbrx_deps="ppc"
2077 ppc4xx_deps="ppc"
2078 vsx_deps="altivec"
2079 power8_deps="vsx"
2080
2081 cpunop_deps="i686"
2082 x86_64_select="i686"
2083 x86_64_suggest="fast_cmov"
2084
2085 amd3dnow_deps="mmx"
2086 amd3dnowext_deps="amd3dnow"
2087 i686_deps="x86"
2088 mmx_deps="x86"
2089 mmxext_deps="mmx"
2090 sse_deps="mmxext"
2091 sse2_deps="sse"
2092 sse3_deps="sse2"
2093 ssse3_deps="sse3"
2094 sse4_deps="ssse3"
2095 sse42_deps="sse4"
2096 avx_deps="sse42"
2097 xop_deps="avx"
2098 fma3_deps="avx"
2099 fma4_deps="avx"
2100 avx2_deps="avx"
2101
2102 mmx_external_deps="yasm"
2103 mmx_inline_deps="inline_asm"
2104 mmx_suggest="mmx_external mmx_inline"
2105
2106 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2107     eval dep=\$${ext}_deps
2108     eval ${ext}_external_deps='"${dep}_external"'
2109     eval ${ext}_inline_deps='"${dep}_inline"'
2110     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2111 done
2112
2113 aligned_stack_if_any="aarch64 ppc x86"
2114 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2115 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2116 fast_unaligned_if_any="aarch64 ppc x86"
2117 simd_align_16_if_any="altivec neon sse"
2118
2119 # system capabilities
2120 symver_if_any="symver_asm_label symver_gnu_asm"
2121 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2122
2123 # threading support
2124 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2125 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2126 atomics_win32_if="MemoryBarrier"
2127 atomics_native_if_any="$ATOMICS_LIST"
2128 w32threads_deps="atomics_native"
2129 threads_if_any="$THREADS_LIST"
2130
2131 # subsystems
2132 dct_select="rdft"
2133 error_resilience_select="me_cmp"
2134 faandct_deps="faan fdctdsp"
2135 faanidct_deps="faan idctdsp"
2136 frame_thread_encoder_deps="encoders threads"
2137 intrax8_select="error_resilience"
2138 mdct_select="fft"
2139 rdft_select="fft"
2140 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2141 mpeg_er_select="error_resilience"
2142 mpegaudio_select="mpegaudiodsp"
2143 mpegaudiodsp_select="dct"
2144 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2145 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2146 qsvdec_select="qsv"
2147 qsvenc_select="qsv"
2148
2149 # decoders / encoders
2150 aac_decoder_select="imdct15 mdct sinewin"
2151 aac_fixed_decoder_select="mdct sinewin"
2152 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2153 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2154 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2155 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2156 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2157 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2158 adpcm_g722_decoder_select="g722dsp"
2159 adpcm_g722_encoder_select="g722dsp"
2160 aic_decoder_select="golomb idctdsp"
2161 alac_encoder_select="lpc"
2162 als_decoder_select="bswapdsp"
2163 amrnb_decoder_select="lsp"
2164 amrwb_decoder_select="lsp"
2165 amv_decoder_select="sp5x_decoder exif"
2166 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2167 ape_decoder_select="bswapdsp llauddsp"
2168 apng_decoder_select="zlib"
2169 apng_encoder_select="huffyuvencdsp zlib"
2170 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2171 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2172 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2173 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2174 atrac1_decoder_select="mdct sinewin"
2175 atrac3_decoder_select="mdct"
2176 atrac3p_decoder_select="mdct sinewin"
2177 avrn_decoder_select="exif jpegtables"
2178 bink_decoder_select="blockdsp hpeldsp"
2179 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2180 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2181 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2182 cllc_decoder_select="bswapdsp"
2183 comfortnoise_encoder_select="lpc"
2184 cook_decoder_select="audiodsp mdct sinewin"
2185 cscd_decoder_select="lzo"
2186 cscd_decoder_suggest="zlib"
2187 dca_decoder_select="fmtconvert mdct"
2188 dds_decoder_select="texturedsp"
2189 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2190 dnxhd_decoder_select="blockdsp idctdsp"
2191 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2192 dvvideo_decoder_select="dvprofile idctdsp"
2193 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2194 dxa_decoder_select="zlib"
2195 eac3_decoder_select="ac3_decoder"
2196 eac3_encoder_select="ac3_encoder"
2197 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2198 eatgq_decoder_select="aandcttables"
2199 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2200 exr_decoder_select="zlib"
2201 ffv1_decoder_select="golomb rangecoder"
2202 ffv1_encoder_select="rangecoder"
2203 ffvhuff_decoder_select="huffyuv_decoder"
2204 ffvhuff_encoder_select="huffyuv_encoder"
2205 fic_decoder_select="golomb"
2206 flac_decoder_select="flacdsp golomb"
2207 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2208 flashsv_decoder_select="zlib"
2209 flashsv_encoder_select="zlib"
2210 flashsv2_encoder_select="zlib"
2211 flashsv2_decoder_select="zlib"
2212 flv_decoder_select="h263_decoder"
2213 flv_encoder_select="h263_encoder"
2214 fourxm_decoder_select="blockdsp bswapdsp"
2215 fraps_decoder_select="bswapdsp huffman"
2216 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2217 g729_decoder_select="audiodsp"
2218 h261_decoder_select="mpegvideo"
2219 h261_encoder_select="aandcttables mpegvideoenc"
2220 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2221 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2222 h263i_decoder_select="h263_decoder"
2223 h263p_decoder_select="h263_decoder"
2224 h263p_encoder_select="h263_encoder"
2225 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2226 h264_decoder_suggest="error_resilience"
2227 h264_qsv_decoder_deps="libmfx"
2228 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2229 h264_qsv_encoder_deps="libmfx"
2230 h264_qsv_encoder_select="qsvenc"
2231 hap_decoder_select="snappy texturedsp"
2232 hap_encoder_deps="libsnappy"
2233 hap_encoder_select="texturedspenc"
2234 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2235 hevc_qsv_encoder_deps="libmfx"
2236 hevc_qsv_decoder_deps="libmfx"
2237 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2238 hevc_qsv_encoder_select="qsvenc"
2239 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2240 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2241 iac_decoder_select="imc_decoder"
2242 imc_decoder_select="bswapdsp fft mdct sinewin"
2243 indeo3_decoder_select="hpeldsp"
2244 indeo4_decoder_select="ividsp"
2245 indeo5_decoder_select="ividsp"
2246 interplay_video_decoder_select="hpeldsp"
2247 jpegls_decoder_select="golomb mjpeg_decoder"
2248 jpegls_encoder_select="golomb"
2249 jv_decoder_select="blockdsp"
2250 lagarith_decoder_select="huffyuvdsp"
2251 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2252 loco_decoder_select="golomb"
2253 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2254 metasound_decoder_select="lsp mdct sinewin"
2255 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2256 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2257 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 mjpegb_decoder_select="mjpeg_decoder"
2259 mlp_decoder_select="mlp_parser"
2260 motionpixels_decoder_select="bswapdsp"
2261 mp1_decoder_select="mpegaudio"
2262 mp1float_decoder_select="mpegaudio"
2263 mp2_decoder_select="mpegaudio"
2264 mp2float_decoder_select="mpegaudio"
2265 mp3_decoder_select="mpegaudio"
2266 mp3adu_decoder_select="mpegaudio"
2267 mp3adufloat_decoder_select="mpegaudio"
2268 mp3float_decoder_select="mpegaudio"
2269 mp3on4_decoder_select="mpegaudio"
2270 mp3on4float_decoder_select="mpegaudio"
2271 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2272 mpc8_decoder_select="mpegaudiodsp"
2273 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2274 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2275 mpegvideo_decoder_select="mpegvideo"
2276 mpeg1video_decoder_select="mpegvideo"
2277 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2278 mpeg2video_decoder_select="mpegvideo"
2279 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2280 mpeg2_qsv_decoder_deps="libmfx"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2282 mpeg2_qsv_encoder_deps="libmfx"
2283 mpeg2_qsv_encoder_select="qsvenc"
2284 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2285 mpeg4_encoder_select="h263_encoder"
2286 msa1_decoder_select="mss34dsp"
2287 msmpeg4v1_decoder_select="h263_decoder"
2288 msmpeg4v2_decoder_select="h263_decoder"
2289 msmpeg4v2_encoder_select="h263_encoder"
2290 msmpeg4v3_decoder_select="h263_decoder"
2291 msmpeg4v3_encoder_select="h263_encoder"
2292 mss2_decoder_select="vc1_decoder"
2293 mts2_decoder_select="mss34dsp"
2294 mxpeg_decoder_select="mjpeg_decoder"
2295 nellymoser_decoder_select="mdct sinewin"
2296 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2297 nuv_decoder_select="idctdsp lzo"
2298 on2avc_decoder_select="mdct"
2299 opus_decoder_deps="swresample"
2300 opus_decoder_select="imdct15"
2301 png_decoder_select="zlib"
2302 png_encoder_select="huffyuvencdsp zlib"
2303 prores_decoder_select="blockdsp idctdsp"
2304 prores_encoder_select="fdctdsp"
2305 qcelp_decoder_select="lsp"
2306 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2307 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2308 ra_144_decoder_select="audiodsp"
2309 ralf_decoder_select="golomb"
2310 rawvideo_decoder_select="bswapdsp"
2311 rtjpeg_decoder_select="me_cmp"
2312 rv10_decoder_select="h263_decoder"
2313 rv10_encoder_select="h263_encoder"
2314 rv20_decoder_select="h263_decoder"
2315 rv20_encoder_select="h263_encoder"
2316 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2317 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2318 shorten_decoder_select="golomb"
2319 sipr_decoder_select="lsp"
2320 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2321 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2322 sonic_decoder_select="golomb rangecoder"
2323 sonic_encoder_select="golomb rangecoder"
2324 sonic_ls_encoder_select="golomb rangecoder"
2325 sp5x_decoder_select="mjpeg_decoder"
2326 svq1_decoder_select="hpeldsp"
2327 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2328 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2329 svq3_decoder_suggest="zlib"
2330 tak_decoder_select="audiodsp"
2331 tdsc_decoder_select="zlib mjpeg_decoder"
2332 theora_decoder_select="vp3_decoder"
2333 thp_decoder_select="mjpeg_decoder"
2334 tiff_decoder_suggest="zlib lzma"
2335 tiff_encoder_suggest="zlib"
2336 truehd_decoder_select="mlp_parser"
2337 truemotion2_decoder_select="bswapdsp"
2338 truespeech_decoder_select="bswapdsp"
2339 tscc_decoder_select="zlib"
2340 twinvq_decoder_select="mdct lsp sinewin"
2341 txd_decoder_select="texturedsp"
2342 utvideo_decoder_select="bswapdsp"
2343 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2344 vble_decoder_select="huffyuvdsp"
2345 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2346 vc1image_decoder_select="vc1_decoder"
2347 vc1_qsv_decoder_deps="libmfx"
2348 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2349 vorbis_decoder_select="mdct"
2350 vorbis_encoder_select="mdct"
2351 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2352 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2353 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2354 vp6a_decoder_select="vp6_decoder"
2355 vp6f_decoder_select="vp6_decoder"
2356 vp7_decoder_select="h264pred videodsp vp8dsp"
2357 vp8_decoder_select="h264pred videodsp vp8dsp"
2358 vp9_decoder_select="videodsp vp9_parser"
2359 webp_decoder_select="vp8_decoder"
2360 wmalossless_decoder_select="llauddsp"
2361 wmapro_decoder_select="mdct sinewin wma_freqs"
2362 wmav1_decoder_select="mdct sinewin wma_freqs"
2363 wmav1_encoder_select="mdct sinewin wma_freqs"
2364 wmav2_decoder_select="mdct sinewin wma_freqs"
2365 wmav2_encoder_select="mdct sinewin wma_freqs"
2366 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2367 wmv1_decoder_select="h263_decoder"
2368 wmv1_encoder_select="h263_encoder"
2369 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2370 wmv2_encoder_select="h263_encoder wmv2dsp"
2371 wmv3_decoder_select="vc1_decoder"
2372 wmv3image_decoder_select="wmv3_decoder"
2373 zerocodec_decoder_select="zlib"
2374 zlib_decoder_select="zlib"
2375 zlib_encoder_select="zlib"
2376 zmbv_decoder_select="zlib"
2377 zmbv_encoder_select="zlib"
2378
2379 # hardware accelerators
2380 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2381 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2382 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2383 vaapi_deps="va_va_h"
2384 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads CoreServices_CoreServices_h"
2385 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore -framework CoreServices"
2386 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2387 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads CoreServices_CoreServices_h"
2388 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreServices"
2389 xvmc_deps="X11_extensions_XvMClib_h"
2390
2391 h263_vaapi_hwaccel_deps="vaapi"
2392 h263_vaapi_hwaccel_select="h263_decoder"
2393 h263_vdpau_hwaccel_deps="vdpau"
2394 h263_vdpau_hwaccel_select="h263_decoder"
2395 h263_videotoolbox_hwaccel_deps="videotoolbox"
2396 h263_videotoolbox_hwaccel_select="h263_decoder"
2397 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2398 h264_d3d11va_hwaccel_deps="d3d11va"
2399 h264_d3d11va_hwaccel_select="h264_decoder"
2400 h264_dxva2_hwaccel_deps="dxva2"
2401 h264_dxva2_hwaccel_select="h264_decoder"
2402 h264_mmal_decoder_deps="mmal"
2403 h264_mmal_hwaccel_deps="mmal"
2404 h264_mmal_decoder_select="h264_decoder"
2405 h264_mmal_encoder_deps="mmal"
2406 h264_qsv_hwaccel_deps="libmfx"
2407 h264_vaapi_hwaccel_deps="vaapi"
2408 h264_vaapi_hwaccel_select="h264_decoder"
2409 h264_vda_decoder_deps="vda"
2410 h264_vda_decoder_select="h264_decoder"
2411 h264_vda_hwaccel_deps="vda"
2412 h264_vda_hwaccel_select="h264_decoder"
2413 h264_vda_old_hwaccel_deps="vda"
2414 h264_vda_old_hwaccel_select="h264_decoder"
2415 h264_vdpau_decoder_deps="vdpau"
2416 h264_vdpau_decoder_select="h264_decoder"
2417 h264_vdpau_hwaccel_deps="vdpau"
2418 h264_vdpau_hwaccel_select="h264_decoder"
2419 h264_videotoolbox_hwaccel_deps="videotoolbox"
2420 h264_videotoolbox_hwaccel_select="h264_decoder"
2421 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2422 hevc_d3d11va_hwaccel_select="hevc_decoder"
2423 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2424 hevc_dxva2_hwaccel_select="hevc_decoder"
2425 hevc_qsv_hwaccel_deps="libmfx"
2426 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2427 hevc_vdpau_hwaccel_select="hevc_decoder"
2428 mpeg_vdpau_decoder_deps="vdpau"
2429 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2430 mpeg_xvmc_hwaccel_deps="xvmc"
2431 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2432 mpeg1_vdpau_decoder_deps="vdpau"
2433 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2434 mpeg1_vdpau_hwaccel_deps="vdpau"
2435 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2436 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2437 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2438 mpeg1_xvmc_hwaccel_deps="xvmc"
2439 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2440 mpeg2_crystalhd_decoder_select="crystalhd"
2441 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2442 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2443 mpeg2_dxva2_hwaccel_deps="dxva2"
2444 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2445 mpeg2_qsv_hwaccel_deps="libmfx"
2446 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2447 mpeg2_vaapi_hwaccel_deps="vaapi"
2448 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2449 mpeg2_vdpau_hwaccel_deps="vdpau"
2450 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2451 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2452 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2453 mpeg2_xvmc_hwaccel_deps="xvmc"
2454 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2455 mpeg4_crystalhd_decoder_select="crystalhd"
2456 mpeg4_vaapi_hwaccel_deps="vaapi"
2457 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2458 mpeg4_vdpau_decoder_deps="vdpau"
2459 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2460 mpeg4_vdpau_hwaccel_deps="vdpau"
2461 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2462 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2463 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2464 msmpeg4_crystalhd_decoder_select="crystalhd"
2465 vc1_crystalhd_decoder_select="crystalhd"
2466 vc1_d3d11va_hwaccel_deps="d3d11va"
2467 vc1_d3d11va_hwaccel_select="vc1_decoder"
2468 vc1_dxva2_hwaccel_deps="dxva2"
2469 vc1_dxva2_hwaccel_select="vc1_decoder"
2470 vc1_vaapi_hwaccel_deps="vaapi"
2471 vc1_vaapi_hwaccel_select="vc1_decoder"
2472 vc1_vdpau_decoder_deps="vdpau"
2473 vc1_vdpau_decoder_select="vc1_decoder"
2474 vc1_vdpau_hwaccel_deps="vdpau"
2475 vc1_vdpau_hwaccel_select="vc1_decoder"
2476 vc1_qsv_hwaccel_deps="libmfx"
2477 vc1_qsv_hwaccel_select="qsvdec_vc1"
2478 wmv3_crystalhd_decoder_select="crystalhd"
2479 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2480 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2481 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2482 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2483 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2484
2485 # parsers
2486 h264_parser_select="h264_decoder"
2487 hevc_parser_select="golomb"
2488 mpegvideo_parser_select="mpegvideo"
2489 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2490 vc1_parser_select="mpegvideo startcode vc1_decoder"
2491
2492 # bitstream_filters
2493 mjpeg2jpeg_bsf_select="jpegtables"
2494
2495 # external libraries
2496 libaacplus_encoder_deps="libaacplus"
2497 libcelt_decoder_deps="libcelt"
2498 libdcadec_decoder_deps="libdcadec"
2499 libfaac_encoder_deps="libfaac"
2500 libfaac_encoder_select="audio_frame_queue"
2501 libfdk_aac_decoder_deps="libfdk_aac"
2502 libfdk_aac_encoder_deps="libfdk_aac"
2503 libfdk_aac_encoder_select="audio_frame_queue"
2504 libgme_demuxer_deps="libgme"
2505 libgsm_decoder_deps="libgsm"
2506 libgsm_encoder_deps="libgsm"
2507 libgsm_ms_decoder_deps="libgsm"
2508 libgsm_ms_encoder_deps="libgsm"
2509 libilbc_decoder_deps="libilbc"
2510 libilbc_encoder_deps="libilbc"
2511 libkvazaar_encoder_deps="libkvazaar"
2512 libmodplug_demuxer_deps="libmodplug"
2513 libmp3lame_encoder_deps="libmp3lame"
2514 libmp3lame_encoder_select="audio_frame_queue"
2515 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2516 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2517 libopencore_amrnb_encoder_select="audio_frame_queue"
2518 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2519 libopenh264_encoder_deps="libopenh264"
2520 libopenjpeg_decoder_deps="libopenjpeg"
2521 libopenjpeg_encoder_deps="libopenjpeg"
2522 libopus_decoder_deps="libopus"
2523 libopus_encoder_deps="libopus"
2524 libopus_encoder_select="audio_frame_queue"
2525 libquvi_demuxer_deps="libquvi"
2526 libschroedinger_decoder_deps="libschroedinger"
2527 libschroedinger_encoder_deps="libschroedinger"
2528 libshine_encoder_deps="libshine"
2529 libshine_encoder_select="audio_frame_queue"
2530 libspeex_decoder_deps="libspeex"
2531 libspeex_encoder_deps="libspeex"
2532 libspeex_encoder_select="audio_frame_queue"
2533 libstagefright_h264_decoder_deps="libstagefright_h264"
2534 libtheora_encoder_deps="libtheora"
2535 libtwolame_encoder_deps="libtwolame"
2536 libvo_aacenc_encoder_deps="libvo_aacenc"
2537 libvo_aacenc_encoder_select="audio_frame_queue"
2538 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2539 libvorbis_decoder_deps="libvorbis"
2540 libvorbis_encoder_deps="libvorbis"
2541 libvorbis_encoder_select="audio_frame_queue"
2542 libvpx_vp8_decoder_deps="libvpx"
2543 libvpx_vp8_encoder_deps="libvpx"
2544 libvpx_vp9_decoder_deps="libvpx"
2545 libvpx_vp9_encoder_deps="libvpx"
2546 libwavpack_encoder_deps="libwavpack"
2547 libwebp_encoder_deps="libwebp"
2548 libwebp_anim_encoder_deps="libwebp"
2549 libx262_encoder_deps="libx262"
2550 libx264_encoder_deps="libx264"
2551 libx264rgb_encoder_deps="libx264"
2552 libx264rgb_encoder_select="libx264_encoder"
2553 libx265_encoder_deps="libx265"
2554 libxavs_encoder_deps="libxavs"
2555 libxvid_encoder_deps="libxvid"
2556 libutvideo_decoder_deps="libutvideo"
2557 libutvideo_encoder_deps="libutvideo"
2558 libzvbi_teletext_decoder_deps="libzvbi"
2559 nvenc_encoder_deps="nvenc"
2560 nvenc_h264_encoder_deps="nvenc"
2561 nvenc_hevc_encoder_deps="nvenc"
2562
2563 # demuxers / muxers
2564 ac3_demuxer_select="ac3_parser"
2565 asf_demuxer_select="riffdec"
2566 asf_o_demuxer_select="riffdec"
2567 asf_muxer_select="riffenc"
2568 asf_stream_muxer_select="asf_muxer"
2569 avi_demuxer_select="riffdec exif"
2570 avi_muxer_select="riffenc"
2571 avisynth_demuxer_deps="avisynth"
2572 avisynth_demuxer_select="riffdec"
2573 caf_demuxer_select="riffdec"
2574 dash_muxer_select="mp4_muxer"
2575 dirac_demuxer_select="dirac_parser"
2576 dts_demuxer_select="dca_parser"
2577 dtshd_demuxer_select="dca_parser"
2578 dv_demuxer_select="dvprofile"
2579 dv_muxer_select="dvprofile"
2580 dxa_demuxer_select="riffdec"
2581 eac3_demuxer_select="ac3_parser"
2582 f4v_muxer_select="mov_muxer"
2583 flac_demuxer_select="flac_parser"
2584 hds_muxer_select="flv_muxer"
2585 hls_muxer_select="mpegts_muxer"
2586 image2_alias_pix_demuxer_select="image2_demuxer"
2587 image2_brender_pix_demuxer_select="image2_demuxer"
2588 ipod_muxer_select="mov_muxer"
2589 ismv_muxer_select="mov_muxer"
2590 libnut_demuxer_deps="libnut"
2591 libnut_muxer_deps="libnut"
2592 matroska_audio_muxer_select="matroska_muxer"
2593 matroska_demuxer_select="riffdec"
2594 matroska_demuxer_suggest="bzlib lzo zlib"
2595 matroska_muxer_select="riffenc"
2596 mmf_muxer_select="riffenc"
2597 mov_demuxer_select="riffdec"
2598 mov_demuxer_suggest="zlib"
2599 mov_muxer_select="riffenc rtpenc_chain"
2600 mp3_demuxer_select="mpegaudio_parser"
2601 mp4_muxer_select="mov_muxer"
2602 mpegts_muxer_select="adts_muxer latm_muxer"
2603 mpegtsraw_demuxer_select="mpegts_demuxer"
2604 mxf_d10_muxer_select="mxf_muxer"
2605 mxf_opatom_muxer_select="mxf_muxer"
2606 nut_muxer_select="riffenc"
2607 nuv_demuxer_select="riffdec"
2608 oga_muxer_select="ogg_muxer"
2609 ogg_demuxer_select="golomb"
2610 opus_muxer_select="ogg_muxer"
2611 psp_muxer_select="mov_muxer"
2612 rtp_demuxer_select="sdp_demuxer"
2613 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2614 rtsp_demuxer_select="http_protocol rtpdec"
2615 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2616 sap_demuxer_select="sdp_demuxer"
2617 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2618 sdp_demuxer_select="rtpdec"
2619 smoothstreaming_muxer_select="ismv_muxer"
2620 spdif_muxer_select="aac_parser"
2621 spx_muxer_select="ogg_muxer"
2622 tak_demuxer_select="tak_parser"
2623 tg2_muxer_select="mov_muxer"
2624 tgp_muxer_select="mov_muxer"
2625 vobsub_demuxer_select="mpegps_demuxer"
2626 w64_demuxer_select="wav_demuxer"
2627 w64_muxer_select="wav_muxer"
2628 wav_demuxer_select="riffdec"
2629 wav_muxer_select="riffenc"
2630 webm_muxer_select="riffenc"
2631 wtv_demuxer_select="riffdec"
2632 wtv_muxer_select="riffenc"
2633 xmv_demuxer_select="riffdec"
2634 xwma_demuxer_select="riffdec"
2635
2636 # indevs / outdevs
2637 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2638 alsa_outdev_deps="alsa_asoundlib_h"
2639 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2640 avfoundation_indev_select="avfoundation"
2641 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2642 caca_outdev_deps="libcaca"
2643 decklink_outdev_deps="decklink pthreads"
2644 decklink_outdev_extralibs="-lstdc++"
2645 decklink_indev_deps="decklink pthreads"
2646 decklink_indev_extralibs="-lstdc++"
2647 dshow_indev_deps="IBaseFilter"
2648 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2649 dv1394_indev_deps="dv1394"
2650 dv1394_indev_select="dv_demuxer"
2651 fbdev_indev_deps="linux_fb_h"
2652 fbdev_outdev_deps="linux_fb_h"
2653 gdigrab_indev_deps="CreateDIBSection"
2654 gdigrab_indev_extralibs="-lgdi32"
2655 gdigrab_indev_select="bmp_decoder"
2656 iec61883_indev_deps="libiec61883"
2657 jack_indev_deps="jack_jack_h sem_timedwait"
2658 lavfi_indev_deps="avfilter"
2659 libcdio_indev_deps="libcdio"
2660 libdc1394_indev_deps="libdc1394"
2661 libv4l2_indev_deps="libv4l2"
2662 openal_indev_deps="openal"
2663 opengl_outdev_deps="opengl"
2664 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2665 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2666 pulse_indev_deps="libpulse"
2667 pulse_outdev_deps="libpulse"
2668 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2669 qtkit_indev_select="qtkit"
2670 sdl_outdev_deps="sdl"
2671 sndio_indev_deps="sndio_h"
2672 sndio_outdev_deps="sndio_h"
2673 v4l_indev_deps="linux_videodev_h"
2674 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2675 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2676 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2677 vfwcap_indev_extralibs="-lavicap32"
2678 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2679 xv_outdev_extralibs="-lXv -lX11 -lXext"
2680 x11grab_indev_deps="x11grab"
2681 x11grab_xcb_indev_deps="libxcb"
2682
2683 # protocols
2684 async_protocol_deps="pthreads"
2685 bluray_protocol_deps="libbluray"
2686 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2687 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2688 ffrtmpcrypt_protocol_select="tcp_protocol"
2689 ffrtmphttp_protocol_deps="!librtmp_protocol"
2690 ffrtmphttp_protocol_select="http_protocol"
2691 ftp_protocol_select="tcp_protocol"
2692 gopher_protocol_select="network"
2693 http_protocol_select="tcp_protocol"
2694 httpproxy_protocol_select="tcp_protocol"
2695 https_protocol_select="tls_protocol"
2696 icecast_protocol_select="http_protocol"
2697 librtmp_protocol_deps="librtmp"
2698 librtmpe_protocol_deps="librtmp"
2699 librtmps_protocol_deps="librtmp"
2700 librtmpt_protocol_deps="librtmp"
2701 librtmpte_protocol_deps="librtmp"
2702 libsmbclient_protocol_deps="libsmbclient gplv3"
2703 libssh_protocol_deps="libssh"
2704 mmsh_protocol_select="http_protocol"
2705 mmst_protocol_select="network"
2706 rtmp_protocol_deps="!librtmp_protocol"
2707 rtmp_protocol_select="tcp_protocol"
2708 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2709 rtmps_protocol_deps="!librtmp_protocol"
2710 rtmps_protocol_select="tls_protocol"
2711 rtmpt_protocol_select="ffrtmphttp_protocol"
2712 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2713 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2714 rtp_protocol_select="udp_protocol"
2715 sctp_protocol_deps="struct_sctp_event_subscribe"
2716 sctp_protocol_select="network"
2717 srtp_protocol_select="rtp_protocol"
2718 tcp_protocol_select="network"
2719 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2720 tls_gnutls_protocol_select="tcp_protocol"
2721 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2722 tls_openssl_protocol_select="tcp_protocol"
2723 tls_securetransport_protocol_deps="securetransport"
2724 tls_securetransport_protocol_select="tcp_protocol"
2725 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2726 udp_protocol_select="network"
2727 udplite_protocol_select="network"
2728 unix_protocol_deps="sys_un_h"
2729 unix_protocol_select="network"
2730
2731 # filters
2732 amovie_filter_deps="avcodec avformat"
2733 aresample_filter_deps="swresample"
2734 ass_filter_deps="libass"
2735 asyncts_filter_deps="avresample"
2736 atempo_filter_deps="avcodec"
2737 atempo_filter_select="rdft"
2738 azmq_filter_deps="libzmq"
2739 blackframe_filter_deps="gpl"
2740 boxblur_filter_deps="gpl"
2741 bs2b_filter_deps="libbs2b"
2742 colormatrix_filter_deps="gpl"
2743 cover_rect_filter_deps="avcodec avformat gpl"
2744 cropdetect_filter_deps="gpl"
2745 delogo_filter_deps="gpl"
2746 deshake_filter_select="pixelutils"
2747 drawtext_filter_deps="libfreetype"
2748 dynaudnorm_filter_deps="copysign erf"
2749 ebur128_filter_deps="gpl"
2750 eq_filter_deps="gpl"
2751 fftfilt_filter_deps="avcodec"
2752 fftfilt_filter_select="rdft"
2753 flite_filter_deps="libflite"
2754 find_rect_filter_deps="avcodec avformat gpl"
2755 frei0r_filter_deps="frei0r dlopen"
2756 frei0r_src_filter_deps="frei0r dlopen"
2757 fspp_filter_deps="gpl"
2758 geq_filter_deps="gpl"
2759 histeq_filter_deps="gpl"
2760 hqdn3d_filter_deps="gpl"
2761 interlace_filter_deps="gpl"
2762 kerndeint_filter_deps="gpl"
2763 ladspa_filter_deps="ladspa dlopen"
2764 mcdeint_filter_deps="avcodec gpl"
2765 movie_filter_deps="avcodec avformat"
2766 mpdecimate_filter_deps="gpl"
2767 mpdecimate_filter_select="pixelutils"
2768 mptestsrc_filter_deps="gpl"
2769 negate_filter_deps="lut_filter"
2770 perspective_filter_deps="gpl"
2771 pp7_filter_deps="gpl"
2772 ocv_filter_deps="libopencv"
2773 owdenoise_filter_deps="gpl"
2774 pan_filter_deps="swresample"
2775 phase_filter_deps="gpl"
2776 pp_filter_deps="gpl postproc"
2777 pullup_filter_deps="gpl"
2778 removelogo_filter_deps="avcodec avformat swscale"
2779 repeatfields_filter_deps="gpl"
2780 resample_filter_deps="avresample"
2781 sab_filter_deps="gpl swscale"
2782 scale_filter_deps="swscale"
2783 scale2ref_filter_deps="swscale"
2784 select_filter_select="pixelutils"
2785 smartblur_filter_deps="gpl swscale"
2786 showcqt_filter_deps="avcodec"
2787 showcqt_filter_select="fft"
2788 showfreqs_filter_deps="avcodec"
2789 showfreqs_filter_select="fft"
2790 showspectrum_filter_deps="avcodec"
2791 showspectrum_filter_select="rdft"
2792 spp_filter_deps="gpl avcodec"
2793 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2794 stereo3d_filter_deps="gpl"
2795 subtitles_filter_deps="avformat avcodec libass"
2796 super2xsai_filter_deps="gpl"
2797 tinterlace_filter_deps="gpl"
2798 vidstabdetect_filter_deps="libvidstab"
2799 vidstabtransform_filter_deps="libvidstab"
2800 pixfmts_super2xsai_test_deps="super2xsai_filter"
2801 tinterlace_merge_test_deps="tinterlace_filter"
2802 tinterlace_pad_test_deps="tinterlace_filter"
2803 uspp_filter_deps="gpl avcodec"
2804 zmq_filter_deps="libzmq"
2805 zoompan_filter_deps="swscale"
2806
2807 # examples
2808 avio_reading="avformat avcodec avutil"
2809 avio_dir_cmd="avformat avutil"
2810 avcodec_example_deps="avcodec avutil"
2811 decoding_encoding_example_deps="avcodec avformat avutil"
2812 demuxing_decoding_example_deps="avcodec avformat avutil"
2813 extract_mvs_example_deps="avcodec avformat avutil"
2814 filter_audio_example_deps="avfilter avutil"
2815 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2816 filtering_video_example_deps="avfilter avcodec avformat avutil"
2817 metadata_example_deps="avformat avutil"
2818 muxing_example_deps="avcodec avformat avutil swscale"
2819 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2820 remuxing_example_deps="avcodec avformat avutil"
2821 resampling_audio_example_deps="avutil swresample"
2822 scaling_video_example_deps="avutil swscale"
2823 transcode_aac_example_deps="avcodec avformat swresample"
2824 transcoding_example_deps="avfilter avcodec avformat avutil"
2825
2826 # libraries, in linking order
2827 avcodec_deps="avutil"
2828 avdevice_deps="avformat avcodec avutil"
2829 avfilter_deps="avutil"
2830 avformat_deps="avcodec avutil"
2831 avresample_deps="avutil"
2832 postproc_deps="avutil gpl"
2833 swresample_deps="avutil"
2834 swscale_deps="avutil"
2835
2836 # programs
2837 ffmpeg_deps="avcodec avfilter avformat swresample"
2838 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2839                null_filter
2840                setpts_filter trim_filter"
2841 ffplay_deps="avcodec avformat swscale swresample sdl"
2842 ffplay_libs='$sdl_libs'
2843 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2844 ffprobe_deps="avcodec avformat"
2845 ffserver_deps="avformat fork sarestart"
2846 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2847
2848 # documentation
2849 podpages_deps="perl"
2850 manpages_deps="perl pod2man"
2851 htmlpages_deps="perl"
2852 htmlpages_deps_any="makeinfo_html texi2html"
2853 txtpages_deps="perl makeinfo"
2854 doc_deps_any="manpages htmlpages podpages txtpages"
2855
2856 # default parameters
2857
2858 logfile="config.log"
2859
2860 # installation paths
2861 prefix_default="/usr/local"
2862 bindir_default='${prefix}/bin'
2863 datadir_default='${prefix}/share/ffmpeg'
2864 docdir_default='${prefix}/share/doc/ffmpeg'
2865 incdir_default='${prefix}/include'
2866 libdir_default='${prefix}/lib'
2867 mandir_default='${prefix}/share/man'
2868
2869 # toolchain
2870 ar_default="ar"
2871 cc_default="gcc"
2872 cxx_default="g++"
2873 host_cc_default="gcc"
2874 cp_f="cp -f"
2875 doxygen_default="doxygen"
2876 install="install"
2877 ln_s="ln -s -f"
2878 nm_default="nm -g"
2879 objformat="elf"
2880 pkg_config_default=pkg-config
2881 ranlib_default="ranlib"
2882 strip_default="strip"
2883 yasmexe_default="yasm"
2884 windres_default="windres"
2885
2886 # OS
2887 target_os_default=$(tolower $(uname -s))
2888 host_os=$target_os_default
2889
2890 # machine
2891 if test "$target_os_default" = aix; then
2892     arch_default=$(uname -p)
2893     strip_default="strip -X32_64"
2894 else
2895     arch_default=$(uname -m)
2896 fi
2897 cpu="generic"
2898 intrinsics="none"
2899
2900 # configurable options
2901 enable $PROGRAM_LIST
2902 enable $DOCUMENT_LIST
2903 enable $EXAMPLE_LIST
2904 enable $(filter_out avresample $LIBRARY_LIST)
2905 enable stripping
2906
2907 enable asm
2908 enable debug
2909 enable doc
2910 enable faan faandct faanidct
2911 enable optimizations
2912 enable runtime_cpudetect
2913 enable safe_bitstream_reader
2914 enable static
2915 enable swscale_alpha
2916 enable valgrind_backtrace
2917
2918 sws_max_filter_size_default=256
2919 set_default sws_max_filter_size
2920
2921 # Enable hwaccels by default.
2922 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2923 enable xlib
2924
2925 # build settings
2926 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2927 LIBPREF="lib"
2928 LIBSUF=".a"
2929 FULLNAME='$(NAME)$(BUILDSUF)'
2930 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2931 SLIBPREF="lib"
2932 SLIBSUF=".so"
2933 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2934 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2935 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2936 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2937 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2938 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2939
2940 asflags_filter=echo
2941 cflags_filter=echo
2942 ldflags_filter=echo
2943
2944 AS_C='-c'
2945 AS_O='-o $@'
2946 CC_C='-c'
2947 CC_E='-E -o $@'
2948 CC_O='-o $@'
2949 CXX_C='-c'
2950 CXX_O='-o $@'
2951 LD_O='-o $@'
2952 LD_LIB='-l%'
2953 LD_PATH='-L'
2954 HOSTCC_C='-c'
2955 HOSTCC_E='-E -o $@'
2956 HOSTCC_O='-o $@'
2957 HOSTLD_O='-o $@'
2958
2959 host_libs='-lm'
2960 host_cflags_filter=echo
2961 host_ldflags_filter=echo
2962
2963 target_path='$(CURDIR)'
2964
2965 # since the object filename is not given with the -MM flag, the compiler
2966 # is only able to print the basename, and we must add the path ourselves
2967 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2968 DEPFLAGS='-MM'
2969
2970 # find source path
2971 if test -f configure; then
2972     source_path=.
2973 else
2974     source_path=$(cd $(dirname "$0"); pwd)
2975     echo "$source_path" | grep -q '[[:blank:]]' &&
2976         die "Out of tree builds are impossible with whitespace in source path."
2977     test -e "$source_path/config.h" &&
2978         die "Out of tree builds are impossible with config.h in source dir."
2979 fi
2980
2981 for v in "$@"; do
2982     r=${v#*=}
2983     l=${v%"$r"}
2984     r=$(sh_quote "$r")
2985     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2986 done
2987
2988 find_things(){
2989     thing=$1
2990     pattern=$2
2991     file=$source_path/$3
2992     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2993 }
2994
2995 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2996 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2997 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2998 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2999 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3000 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3001 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3002 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3003 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3004 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3005 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3006
3007 ALL_COMPONENTS="
3008     $BSF_LIST
3009     $DECODER_LIST
3010     $DEMUXER_LIST
3011     $ENCODER_LIST
3012     $FILTER_LIST
3013     $HWACCEL_LIST
3014     $INDEV_LIST
3015     $MUXER_LIST
3016     $OUTDEV_LIST
3017     $PARSER_LIST
3018     $PROTOCOL_LIST
3019 "
3020
3021 for n in $COMPONENT_LIST; do
3022     v=$(toupper ${n%s})_LIST
3023     eval enable \$$v
3024     eval ${n}_if_any="\$$v"
3025 done
3026
3027 enable $ARCH_EXT_LIST
3028
3029 die_unknown(){
3030     echo "Unknown option \"$1\"."
3031     echo "See $0 --help for available options."
3032     exit 1
3033 }
3034
3035 print_3_columns() {
3036     cat | tr ' ' '\n' | sort | pr -r -3 -t
3037 }
3038
3039 show_list() {
3040     suffix=_$1
3041     shift
3042     echo $* | sed s/$suffix//g | print_3_columns
3043     exit 0
3044 }
3045
3046 rand_list(){
3047     IFS=', '
3048     set -- $*
3049     unset IFS
3050     for thing; do
3051         comp=${thing%:*}
3052         prob=${thing#$comp}
3053         prob=${prob#:}
3054         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3055         echo "prob ${prob:-0.5}"
3056         printf '%s\n' $comp
3057     done
3058 }
3059
3060 do_random(){
3061     action=$1
3062     shift
3063     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3064     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3065 }
3066
3067 for opt do
3068     optval="${opt#*=}"
3069     case "$opt" in
3070         --extra-ldflags=*)
3071             add_ldflags $optval
3072         ;;
3073         --extra-ldexeflags=*)
3074             add_ldexeflags $optval
3075         ;;
3076         --extra-ldlibflags=*)
3077             add_ldlibflags $optval
3078         ;;
3079         --extra-libs=*)
3080             add_extralibs $optval
3081         ;;
3082         --disable-devices)
3083             disable $INDEV_LIST $OUTDEV_LIST
3084         ;;
3085         --enable-debug=*)
3086             debuglevel="$optval"
3087         ;;
3088         --disable-programs)
3089             disable $PROGRAM_LIST
3090         ;;
3091         --disable-everything)
3092             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3093         ;;
3094         --disable-all)
3095             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3096             disable $LIBRARY_LIST $PROGRAM_LIST doc
3097         ;;
3098         --enable-random|--disable-random)
3099             action=${opt%%-random}
3100             do_random ${action#--} $COMPONENT_LIST
3101         ;;
3102         --enable-random=*|--disable-random=*)
3103             action=${opt%%-random=*}
3104             do_random ${action#--} $optval
3105         ;;
3106         --enable-*=*|--disable-*=*)
3107             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3108             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3109             eval list=\$$(toupper $thing)_LIST
3110             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3111             list=$(filter "$name" $list)
3112             [ "$list" = "" ] && warn "Option $opt did not match anything"
3113             $action $list
3114         ;;
3115         --enable-?*|--disable-?*)
3116             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3117             if is_in $option $COMPONENT_LIST; then
3118                 test $action = disable && action=unset
3119                 eval $action \$$(toupper ${option%s})_LIST
3120             elif is_in $option $CMDLINE_SELECT; then
3121                 $action $option
3122             else
3123                 die_unknown $opt
3124             fi
3125         ;;
3126         --list-*)
3127             NAME="${opt#--list-}"
3128             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3129             NAME=${NAME%s}
3130             eval show_list $NAME \$$(toupper $NAME)_LIST
3131         ;;
3132         --help|-h) show_help
3133         ;;
3134         --fatal-warnings) enable fatal_warnings
3135         ;;
3136         *)
3137             optname="${opt%%=*}"
3138             optname="${optname#--}"
3139             optname=$(echo "$optname" | sed 's/-/_/g')
3140             if is_in $optname $CMDLINE_SET; then
3141                 eval $optname='$optval'
3142             elif is_in $optname $CMDLINE_APPEND; then
3143                 append $optname "$optval"
3144             else
3145                 die_unknown $opt
3146             fi
3147         ;;
3148     esac
3149 done
3150
3151 for e in $env; do
3152     eval "export $e"
3153 done
3154
3155 disabled logging && logfile=/dev/null
3156
3157 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3158 set >> $logfile
3159
3160 test -n "$valgrind" && toolchain="valgrind-memcheck"
3161
3162 case "$toolchain" in
3163     clang-asan)
3164         cc_default="clang"
3165         add_cflags  -fsanitize=address
3166         add_ldflags -fsanitize=address
3167     ;;
3168     clang-tsan)
3169         cc_default="clang"
3170         add_cflags  -fsanitize=thread -pie
3171         add_ldflags -fsanitize=thread -pie
3172     ;;
3173     clang-usan)
3174         cc_default="clang"
3175         add_cflags  -fsanitize=undefined
3176         add_ldflags -fsanitize=undefined
3177     ;;
3178     gcc-asan)
3179         cc_default="gcc"
3180         add_cflags  -fsanitize=address
3181         add_ldflags -fsanitize=address
3182     ;;
3183     gcc-tsan)
3184         cc_default="gcc"
3185         add_cflags  -fsanitize=thread -pie -fPIC
3186         add_ldflags -fsanitize=thread -pie -fPIC
3187     ;;
3188     gcc-usan)
3189         cc_default="gcc"
3190         add_cflags  -fsanitize=undefined
3191         add_ldflags -fsanitize=undefined
3192     ;;
3193     valgrind-massif)
3194         target_exec_default=${valgrind:-"valgrind"}
3195         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"
3196     ;;
3197     valgrind-memcheck)
3198         target_exec_default=${valgrind:-"valgrind"}
3199         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3200     ;;
3201     msvc)
3202         # Check whether the current MSVC version needs the C99 converter.
3203         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3204         # support enough of C99 to build ffmpeg. Default to the new
3205         # behaviour if the regexp was unable to match anything, since this
3206         # successfully parses the version number of existing supported
3207         # versions that require the converter (MSVC 2010 and 2012).
3208         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3209         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3210             cc_default="cl"
3211         else
3212             cc_default="c99wrap cl"
3213         fi
3214         ld_default="$source_path/compat/windows/mslink"
3215         nm_default="dumpbin -symbols"
3216         ar_default="lib"
3217         case "$arch" in
3218         arm*)
3219             as_default="armasm"
3220             ;;
3221         esac
3222         target_os_default="win32"
3223         # Use a relative path for TMPDIR. This makes sure all the
3224         # ffconf temp files are written with a relative path, avoiding
3225         # issues with msys/win32 path conversion for MSVC parameters
3226         # such as -Fo<file> or -out:<file>.
3227         TMPDIR=.
3228     ;;
3229     icl)
3230         cc_default="icl"
3231         ld_default="xilink"
3232         nm_default="dumpbin -symbols"
3233         ar_default="xilib"
3234         target_os_default="win32"
3235         TMPDIR=.
3236     ;;
3237     gcov)
3238         add_cflags  -fprofile-arcs -ftest-coverage
3239         add_ldflags -fprofile-arcs -ftest-coverage
3240     ;;
3241     hardened)
3242         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3243         add_cflags   -fno-strict-overflow -fstack-protector-all
3244         add_ldflags  -Wl,-z,relro -Wl,-z,now
3245     ;;
3246     ?*)
3247         die "Unknown toolchain $toolchain"
3248     ;;
3249 esac
3250
3251 test -n "$cross_prefix" && enable cross_compile
3252
3253 if enabled cross_compile; then
3254     test -n "$arch" && test -n "$target_os" ||
3255         die "Must specify target arch and OS when cross-compiling"
3256 fi
3257
3258 ar_default="${cross_prefix}${ar_default}"
3259 cc_default="${cross_prefix}${cc_default}"
3260 cxx_default="${cross_prefix}${cxx_default}"
3261 nm_default="${cross_prefix}${nm_default}"
3262 pkg_config_default="${cross_prefix}${pkg_config_default}"
3263 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3264     ranlib_default="${cross_prefix}${ranlib_default} -D"
3265 else
3266     ranlib_default="${cross_prefix}${ranlib_default}"
3267 fi
3268 strip_default="${cross_prefix}${strip_default}"
3269 windres_default="${cross_prefix}${windres_default}"
3270
3271 sysinclude_default="${sysroot}/usr/include"
3272
3273 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3274     target_exec target_os yasmexe
3275 enabled cross_compile || host_cc_default=$cc
3276 set_default host_cc
3277
3278 pkg_config_fail_message=""
3279 if ! $pkg_config --version >/dev/null 2>&1; then
3280     warn "$pkg_config not found, library detection may fail."
3281     pkg_config=false
3282 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3283     pkg_config_fail_message="
3284 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3285 fi
3286
3287 if test $doxygen != $doxygen_default && \
3288   ! $doxygen --version >/dev/null 2>&1; then
3289     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3290 fi
3291
3292 exesuf() {
3293     case $1 in
3294         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3295     esac
3296 }
3297
3298 EXESUF=$(exesuf $target_os)
3299 HOSTEXESUF=$(exesuf $host_os)
3300
3301 # set temporary file name
3302 : ${TMPDIR:=$TEMPDIR}
3303 : ${TMPDIR:=$TMP}
3304 : ${TMPDIR:=/tmp}
3305
3306 if [ -n "$tempprefix" ] ; then
3307     mktemp(){
3308         echo $tempprefix.${HOSTNAME}.${UID}
3309     }
3310 elif ! check_cmd mktemp -u XXXXXX; then
3311     # simple replacement for missing mktemp
3312     # NOT SAFE FOR GENERAL USE
3313     mktemp(){
3314         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3315     }
3316 fi
3317
3318 tmpfile(){
3319     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3320         (set -C; exec > $tmp) 2>/dev/null ||
3321         die "Unable to create temporary file in $TMPDIR."
3322     append TMPFILES $tmp
3323     eval $1=$tmp
3324 }
3325
3326 trap 'rm -f -- $TMPFILES' EXIT
3327
3328 tmpfile TMPASM .asm
3329 tmpfile TMPC   .c
3330 tmpfile TMPCPP .cpp
3331 tmpfile TMPE   $EXESUF
3332 tmpfile TMPH   .h
3333 tmpfile TMPM   .m
3334 tmpfile TMPO   .o
3335 tmpfile TMPS   .S
3336 tmpfile TMPSH  .sh
3337 tmpfile TMPV   .ver
3338
3339 unset -f mktemp
3340
3341 chmod +x $TMPE
3342
3343 # make sure we can execute files in $TMPDIR
3344 cat > $TMPSH 2>> $logfile <<EOF
3345 #! /bin/sh
3346 EOF
3347 chmod +x $TMPSH >> $logfile 2>&1
3348 if ! $TMPSH >> $logfile 2>&1; then
3349     cat <<EOF
3350 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3351 variable to another directory and make sure that it is not mounted noexec.
3352 EOF
3353     die "Sanity test failed."
3354 fi
3355
3356 armasm_flags(){
3357     for flag; do
3358         case $flag in
3359             # Filter out MSVC cl.exe options from cflags that shouldn't
3360             # be passed to gas-preprocessor
3361             -M[TD]*)                                            ;;
3362             *)                  echo $flag                      ;;
3363         esac
3364    done
3365 }
3366
3367 ccc_flags(){
3368     for flag; do
3369         case $flag in
3370             -std=c99)           echo -c99                       ;;
3371             -mcpu=*)            echo -arch ${flag#*=}           ;;
3372             -mieee)             echo -ieee                      ;;
3373             -O*|-fast)          echo $flag                      ;;
3374             -fno-math-errno)    echo -assume nomath_errno       ;;
3375             -g)                 echo -g3                        ;;
3376             -Wall)              echo -msg_enable level2         ;;
3377             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3378             -Wl,*)              echo $flag                      ;;
3379             -f*|-W*)                                            ;;
3380             *)                  echo $flag                      ;;
3381         esac
3382    done
3383 }
3384
3385 cparser_flags(){
3386     for flag; do
3387         case $flag in
3388             -Wno-switch)             echo -Wno-switch-enum ;;
3389             -Wno-format-zero-length) ;;
3390             -Wdisabled-optimization) ;;
3391             -Wno-pointer-sign)       echo -Wno-other ;;
3392             *)                       echo $flag ;;
3393         esac
3394     done
3395 }
3396
3397 msvc_common_flags(){
3398     for flag; do
3399         case $flag in
3400             # In addition to specifying certain flags under the compiler
3401             # specific filters, they must be specified here as well or else the
3402             # generic catch all at the bottom will print the original flag.
3403             -Wall)                ;;
3404             -std=c99)             ;;
3405             # Common flags
3406             -fomit-frame-pointer) ;;
3407             -g)                   echo -Z7 ;;
3408             -fno-math-errno)      ;;
3409             -fno-common)          ;;
3410             -fno-signed-zeros)    ;;
3411             -fPIC)                ;;
3412             -mthumb)              ;;
3413             -march=*)             ;;
3414             -lz)                  echo zlib.lib ;;
3415             -lavifil32)           echo vfw32.lib ;;
3416             -lavicap32)           echo vfw32.lib user32.lib ;;
3417             -l*)                  echo ${flag#-l}.lib ;;
3418             -LARGEADDRESSAWARE)   echo $flag ;;
3419             -L*)                  echo -libpath:${flag#-L} ;;
3420             *)                    echo $flag ;;
3421         esac
3422     done
3423 }
3424
3425 msvc_flags(){
3426     msvc_common_flags "$@"
3427     for flag; do
3428         case $flag in
3429             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3430                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3431                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3432                                        -wd4307 \
3433                                        -wd4273 -wd4554 -wd4701 ;;
3434         esac
3435     done
3436 }
3437
3438 icl_flags(){
3439     msvc_common_flags "$@"
3440     for flag; do
3441         case $flag in
3442             # Despite what Intel's documentation says -Wall, which is supported
3443             # on Windows, does enable remarks so disable them here.
3444             -Wall)                echo $flag -Qdiag-disable:remark ;;
3445             -std=c99)             echo -Qstd=c99 ;;
3446             -flto)                echo -ipo ;;
3447         esac
3448     done
3449 }
3450
3451 icc_flags(){
3452     for flag; do
3453         case $flag in
3454             -flto)                echo -ipo ;;
3455             *)                    echo $flag ;;
3456         esac
3457     done
3458 }
3459
3460 pgi_flags(){
3461     for flag; do
3462         case $flag in
3463             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3464             -fomit-frame-pointer) echo -Mnoframe ;;
3465             -g)                   echo -gopt ;;
3466             *)                    echo $flag ;;
3467         esac
3468     done
3469 }
3470
3471 suncc_flags(){
3472     for flag; do
3473         case $flag in
3474             -march=*|-mcpu=*)
3475                 case "${flag#*=}" in
3476                     native)                   echo -xtarget=native       ;;
3477                     v9|niagara)               echo -xarch=sparc          ;;
3478                     ultrasparc)               echo -xarch=sparcvis       ;;
3479                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3480                     i586|pentium)             echo -xchip=pentium        ;;
3481                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3482                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3483                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3484                     pentium4*)          echo -xtarget=pentium4           ;;
3485                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3486                     *-sse3)             echo -xarch=sse3                 ;;
3487                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3488                     bonnell)                   echo -xarch=ssse3         ;;
3489                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3490                     westmere)                  echo -xtarget=westmere    ;;
3491                     silvermont)                echo -xarch=sse4_2        ;;
3492                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3493                     core-avx*|ivybridge|haswell|broadwell)
3494                                                echo -xarch=avx           ;;
3495                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3496                     btver1)                    echo -xarch=amdsse4a      ;;
3497                     btver2|bdver*)             echo -xarch=avx           ;;
3498                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3499                     k8|opteron|athlon64|athlon-fx)
3500                                                echo -xarch=sse2a         ;;
3501                     athlon*)                   echo -xarch=pentium_proa  ;;
3502                 esac
3503                 ;;
3504             -std=c99)             echo -xc99              ;;
3505             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3506             -fPIC)                echo -KPIC -xcode=pic32 ;;
3507             -W*,*)                echo $flag              ;;
3508             -f*-*|-W*|-mimpure-text)                      ;;
3509             -shared)              echo -G                 ;;
3510             *)                    echo $flag              ;;
3511         esac
3512     done
3513 }
3514
3515 tms470_flags(){
3516     for flag; do
3517         case $flag in
3518             -march=*|-mcpu=*)
3519                 case "${flag#*=}" in
3520                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3521                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3522                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3523                     armv6*|arm11*)          echo -mv=6   ;;
3524                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3525                                             echo -mv=5e  ;;
3526                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3527                 esac
3528                 ;;
3529             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3530             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3531             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3532             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3533             -msoft-float)   echo --float_support=vfplib       ;;
3534             -O[0-3]|-mf=*)  echo $flag                        ;;
3535             -g)             echo -g -mn                       ;;
3536             -pds=*)         echo $flag                        ;;
3537             -D*|-I*)        echo $flag                        ;;
3538             --gcc|--abi=*)  echo $flag                        ;;
3539             -me)            echo $flag                        ;;
3540         esac
3541     done
3542 }
3543
3544 probe_cc(){
3545     pfx=$1
3546     _cc=$2
3547
3548     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3549     unset _ld_o _ldflags _ld_lib _ld_path
3550     unset _depflags _DEPCMD _DEPFLAGS
3551     _flags_filter=echo
3552
3553     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3554         true # no-op to avoid reading stdin in following checks
3555     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3556         _type=llvm_gcc
3557         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3558         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3559         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3560         _cflags_speed='-O3'
3561         _cflags_size='-Os'
3562     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3563         _type=gcc
3564         gcc_version=$($_cc --version | head -n1)
3565         gcc_basever=$($_cc -dumpversion)
3566         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3567         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3568         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3569         if ! $_cc -dumpversion | grep -q '^2\.'; then
3570             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3571         fi
3572         _cflags_speed='-O3'
3573         _cflags_size='-Os'
3574     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3575         _type=icc
3576         _ident=$($_cc --version | head -n1)
3577         _depflags='-MMD'
3578         _cflags_speed='-O3'
3579         _cflags_size='-Os'
3580         _cflags_noopt='-O1'
3581         _flags_filter=icc_flags
3582     elif $_cc -v 2>&1 | grep -q xlc; then
3583         _type=xlc
3584         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3585         _cflags_speed='-O5'
3586         _cflags_size='-O5 -qcompact'
3587     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3588         _type=ccc
3589         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3590         _DEPFLAGS='-M'
3591         _cflags_speed='-fast'
3592         _cflags_size='-O1'
3593         _flags_filter=ccc_flags
3594     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3595         test -d "$sysroot" || die "No valid sysroot specified."
3596         _type=armcc
3597         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3598         armcc_conf="$PWD/armcc.conf"
3599         $_cc --arm_linux_configure                 \
3600              --arm_linux_config_file="$armcc_conf" \
3601              --configure_sysroot="$sysroot"        \
3602              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3603              die "Error creating armcc configuration file."
3604         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3605         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3606         as_default="${cross_prefix}gcc"
3607         _depflags='-MMD'
3608         _cflags_speed='-O3'
3609         _cflags_size='-Os'
3610     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3611         _type=tms470
3612         _ident=$($_cc -version | head -n1 | tr -s ' ')
3613         _flags='--gcc --abi=eabi -me'
3614         _cc_e='-ppl -fe=$@'
3615         _cc_o='-fe=$@'
3616         _depflags='-ppa -ppd=$(@:.o=.d)'
3617         _cflags_speed='-O3 -mf=5'
3618         _cflags_size='-O3 -mf=2'
3619         _flags_filter=tms470_flags
3620     elif $_cc -v 2>&1 | grep -q clang; then
3621         _type=clang
3622         _ident=$($_cc --version 2>/dev/null | head -n1)
3623         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3624         _cflags_speed='-O3'
3625         _cflags_size='-Os'
3626     elif $_cc -V 2>&1 | grep -q Sun; then
3627         _type=suncc
3628         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3629         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3630         _DEPFLAGS='-xM1 -xc99'
3631         _ldflags='-std=c99'
3632         _cflags_speed='-O5'
3633         _cflags_size='-O5 -xspace'
3634         _flags_filter=suncc_flags
3635     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3636         _type=pathscale
3637         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3638         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3639         _cflags_speed='-O2'
3640         _cflags_size='-Os'
3641         _flags_filter='filter_out -Wdisabled-optimization'
3642     elif $_cc -v 2>&1 | grep -q Open64; then
3643         _type=open64
3644         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3645         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3646         _cflags_speed='-O2'
3647         _cflags_size='-Os'
3648         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3649     elif $_cc -V 2>&1 | grep -q Portland; then
3650         _type=pgi
3651         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3652         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3653         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3654         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3655         _cflags_noopt="-O"
3656         _flags_filter=pgi_flags
3657     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3658         _type=armasm
3659         _ident=$($_cc | head -n1)
3660         # 4509: "This form of conditional instruction is deprecated"
3661         _flags="-nologo -ignore 4509"
3662         _flags_filter=armasm_flags
3663     elif $_cc 2>&1 | grep -q Intel; then
3664         _type=icl
3665         _ident=$($_cc 2>&1 | head -n1)
3666         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3667         # Not only is O3 broken on 13.x+ but it is slower on all previous
3668         # versions (tested) as well.
3669         _cflags_speed="-O2"
3670         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3671         if $_cc 2>&1 | grep -q Linker; then
3672             _ld_o='-out:$@'
3673         else
3674             _ld_o='-Fe$@'
3675         fi
3676         _cc_o='-Fo$@'
3677         _cc_e='-P'
3678         _flags_filter=icl_flags
3679         _ld_lib='lib%.a'
3680         _ld_path='-libpath:'
3681         # -Qdiag-error to make icl error when seeing certain unknown arguments
3682         _flags='-nologo -Qdiag-error:4044,10157'
3683         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3684         # with MSVC which enables it by default.
3685         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3686         disable stripping
3687     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3688         _type=msvc
3689         _ident=$($_cc 2>&1 | head -n1)
3690         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3691         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3692         _cflags_speed="-O2"
3693         _cflags_size="-O1"
3694         if $_cc -nologo- 2>&1 | grep -q Linker; then
3695             _ld_o='-out:$@'
3696         else
3697             _ld_o='-Fe$@'
3698         fi
3699         _cc_o='-Fo$@'
3700         _cc_e='-P -Fi$@'
3701         _flags_filter=msvc_flags
3702         _ld_lib='lib%.a'
3703         _ld_path='-libpath:'
3704         _flags='-nologo'
3705         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3706         disable stripping
3707     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3708         _type=cparser
3709         _ident=$($_cc --version | head -n1)
3710         _depflags='-MMD'
3711         _cflags_speed='-O4'
3712         _cflags_size='-O2'
3713         _flags_filter=cparser_flags
3714     fi
3715
3716     eval ${pfx}_type=\$_type
3717     eval ${pfx}_ident=\$_ident
3718 }
3719
3720 set_ccvars(){
3721     eval ${1}_C=\${_cc_c-\${${1}_C}}
3722     eval ${1}_E=\${_cc_e-\${${1}_E}}
3723     eval ${1}_O=\${_cc_o-\${${1}_O}}
3724
3725     if [ -n "$_depflags" ]; then
3726         eval ${1}_DEPFLAGS=\$_depflags
3727     else
3728         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3729         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3730         eval DEP${1}FLAGS=\$_flags
3731     fi
3732 }
3733
3734 probe_cc cc "$cc"
3735 cflags_filter=$_flags_filter
3736 cflags_speed=$_cflags_speed
3737 cflags_size=$_cflags_size
3738 cflags_noopt=$_cflags_noopt
3739 add_cflags $_flags $_cflags
3740 cc_ldflags=$_ldflags
3741 set_ccvars CC
3742
3743 probe_cc hostcc "$host_cc"
3744 host_cflags_filter=$_flags_filter
3745 add_host_cflags  $_flags $_cflags
3746 set_ccvars HOSTCC
3747
3748 test -n "$cc_type" && enable $cc_type ||
3749     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3750
3751 : ${as_default:=$cc}
3752 : ${dep_cc_default:=$cc}
3753 : ${ld_default:=$cc}
3754 : ${host_ld_default:=$host_cc}
3755 set_default ar as dep_cc ld host_ld windres
3756
3757 probe_cc as "$as"
3758 asflags_filter=$_flags_filter
3759 add_asflags $_flags $_cflags
3760 set_ccvars AS
3761
3762 probe_cc ld "$ld"
3763 ldflags_filter=$_flags_filter
3764 add_ldflags $_flags $_ldflags
3765 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3766 LD_O=${_ld_o-$LD_O}
3767 LD_LIB=${_ld_lib-$LD_LIB}
3768 LD_PATH=${_ld_path-$LD_PATH}
3769
3770 probe_cc hostld "$host_ld"
3771 host_ldflags_filter=$_flags_filter
3772 add_host_ldflags $_flags $_ldflags
3773 HOSTLD_O=${_ld_o-$HOSTLD_O}
3774
3775 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3776     probe_cc depcc "$dep_cc"
3777     CCDEP=${_DEPCMD:-$DEPCMD}
3778     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3779     DEPCCFLAGS=$_flags
3780 fi
3781
3782 if $ar 2>&1 | grep -q Microsoft; then
3783     arflags="-nologo"
3784     ar_o='-out:$@'
3785 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3786     arflags="rq"
3787     ar_o='$@'
3788 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3789     arflags='-Xany -r -c'
3790     ar_o='$@'
3791 elif $ar 2>&1 | grep -q "\[D\] "; then
3792     arflags="rcD"
3793     ar_o='$@'
3794 else
3795     arflags="rc"
3796     ar_o='$@'
3797 fi
3798
3799 add_cflags $extra_cflags
3800 add_cxxflags $extra_cxxflags
3801 add_asflags $extra_cflags
3802
3803 if test -n "$sysroot"; then
3804     case "$cc_type" in
3805         gcc|llvm_gcc|clang)
3806             add_cppflags --sysroot="$sysroot"
3807             add_ldflags --sysroot="$sysroot"
3808 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3809             add_cppflags -isysroot "$sysroot"
3810             add_ldflags -isysroot "$sysroot"
3811         ;;
3812         tms470)
3813             add_cppflags -I"$sysinclude"
3814             add_ldflags  --sysroot="$sysroot"
3815         ;;
3816     esac
3817 fi
3818
3819 if test "$cpu" = host; then
3820     enabled cross_compile &&
3821         die "--cpu=host makes no sense when cross-compiling."
3822
3823     case "$cc_type" in
3824         gcc|llvm_gcc)
3825             check_native(){
3826                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3827                 sed -n "/cc1.*$1=/{
3828                             s/.*$1=\\([^ ]*\\).*/\\1/
3829                             p
3830                             q
3831                         }" $TMPE
3832             }
3833             cpu=$(check_native -march || check_native -mcpu)
3834         ;;
3835     esac
3836
3837     test "${cpu:-host}" = host &&
3838         die "--cpu=host not supported with compiler $cc"
3839 fi
3840
3841 # Deal with common $arch aliases
3842 case "$arch" in
3843     aarch64|arm64)
3844         arch="aarch64"
3845     ;;
3846     arm*|iPad*|iPhone*)
3847         arch="arm"
3848     ;;
3849     mips*|IP*)
3850         arch="mips"
3851     ;;
3852     parisc*|hppa*)
3853         arch="parisc"
3854     ;;
3855     "Power Macintosh"|ppc*|powerpc*)
3856         arch="ppc"
3857     ;;
3858     s390|s390x)
3859         arch="s390"
3860     ;;
3861     sh4|sh)
3862         arch="sh4"
3863     ;;
3864     sun4u|sparc*)
3865         arch="sparc"
3866     ;;
3867     tilegx|tile-gx)
3868         arch="tilegx"
3869     ;;
3870     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3871         arch="x86"
3872     ;;
3873 esac
3874
3875 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3876 enable $arch
3877
3878 # Add processor-specific flags
3879 if enabled aarch64; then
3880
3881     case $cpu in
3882         armv*)
3883             cpuflags="-march=$cpu"
3884         ;;
3885         *)
3886             cpuflags="-mcpu=$cpu"
3887         ;;
3888     esac
3889
3890 elif enabled alpha; then
3891
3892     cpuflags="-mcpu=$cpu"
3893
3894 elif enabled arm; then
3895
3896     check_arm_arch() {
3897         check_cpp_condition stddef.h \
3898             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3899             $cpuflags
3900     }
3901
3902     probe_arm_arch() {
3903         if   check_arm_arch 4;        then echo armv4;
3904         elif check_arm_arch 4T;       then echo armv4t;
3905         elif check_arm_arch 5;        then echo armv5;
3906         elif check_arm_arch 5E;       then echo armv5e;
3907         elif check_arm_arch 5T;       then echo armv5t;
3908         elif check_arm_arch 5TE;      then echo armv5te;
3909         elif check_arm_arch 5TEJ;     then echo armv5te;
3910         elif check_arm_arch 6;        then echo armv6;
3911         elif check_arm_arch 6J;       then echo armv6j;
3912         elif check_arm_arch 6K;       then echo armv6k;
3913         elif check_arm_arch 6Z;       then echo armv6z;
3914         elif check_arm_arch 6ZK;      then echo armv6zk;
3915         elif check_arm_arch 6T2;      then echo armv6t2;
3916         elif check_arm_arch 7;        then echo armv7;
3917         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3918         elif check_arm_arch 7S;       then echo armv7-a;
3919         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3920         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3921         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3922         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3923         fi
3924     }
3925
3926     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3927
3928     case $cpu in
3929         armv*)
3930             cpuflags="-march=$cpu"
3931             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3932         ;;
3933         *)
3934             cpuflags="-mcpu=$cpu"
3935             case $cpu in
3936                 cortex-a*)                               subarch=armv7a  ;;
3937                 cortex-r*)                               subarch=armv7r  ;;
3938                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3939                 arm11*)                                  subarch=armv6   ;;
3940                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3941                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3942                 *)                             subarch=$(probe_arm_arch) ;;
3943             esac
3944         ;;
3945     esac
3946
3947     case "$subarch" in
3948         armv5t*)    enable fast_clz                ;;
3949         armv[6-8]*)
3950             enable fast_clz
3951             disabled fast_unaligned || enable fast_unaligned
3952             ;;
3953     esac
3954
3955 elif enabled avr32; then
3956
3957     case $cpu in
3958         ap7[02]0[0-2])
3959             subarch="avr32_ap"
3960             cpuflags="-mpart=$cpu"
3961         ;;
3962         ap)
3963             subarch="avr32_ap"
3964             cpuflags="-march=$cpu"
3965         ;;
3966         uc3[ab]*)
3967             subarch="avr32_uc"
3968             cpuflags="-mcpu=$cpu"
3969         ;;
3970         uc)
3971             subarch="avr32_uc"
3972             cpuflags="-march=$cpu"
3973         ;;
3974     esac
3975
3976 elif enabled bfin; then
3977
3978     cpuflags="-mcpu=$cpu"
3979
3980 elif enabled mips; then
3981
3982     cpuflags="-march=$cpu"
3983
3984     case $cpu in
3985         24kc)
3986             disable mips32r5
3987             disable mips64r6
3988             disable mipsfpu
3989             disable mipsdspr1
3990             disable mipsdspr2
3991             disable msa
3992         ;;
3993         24kf*)
3994             disable mips32r5
3995             disable mips64r6
3996             disable mipsdspr1
3997             disable mipsdspr2
3998             disable msa
3999         ;;
4000         24kec|34kc|1004kc)
4001             disable mips32r5
4002             disable mips64r6
4003             disable mipsfpu
4004             disable mipsdspr2
4005             disable msa
4006         ;;
4007         24kef*|34kf*|1004kf*)
4008             disable mips32r5
4009             disable mips64r6
4010             disable mipsdspr2
4011             disable msa
4012         ;;
4013         74kc)
4014             disable mips32r5
4015             disable mips64r6
4016             disable mipsfpu
4017             disable msa
4018         ;;
4019         74kf)
4020             disable mips32r5
4021             disable mips64r6
4022             disable msa
4023         ;;
4024         p5600)
4025             disable mips64r6
4026             disable mipsdspr1
4027             disable mipsdspr2
4028
4029             check_cflags "-mtune=p5600"
4030         ;;
4031         i6400)
4032             disable mips32r5
4033             disable mipsdspr1
4034             disable mipsdspr2
4035             disable mipsfpu
4036
4037             check_cflags "-mtune=i6400 -mabi=64"
4038             check_ldflags "-mabi=64"
4039         ;;
4040         loongson*)
4041             disable mipsfpu
4042             disable mips32r2
4043             disable mips32r5
4044             disable mips64r6
4045             disable mipsdspr1
4046             disable mipsdspr2
4047             disable msa
4048             enable local_aligned_8 local_aligned_16 local_aligned_32
4049             enable simd_align_16
4050             enable fast_64bit
4051             enable fast_clz
4052             enable fast_cmov
4053             enable fast_unaligned
4054             disable aligned_stack
4055             case $cpu in
4056                 loongson3*)
4057                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4058                 ;;
4059                 loongson2e)
4060                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4061                 ;;
4062                 loongson2f)
4063                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4064                 ;;
4065             esac
4066         ;;
4067         generic)
4068             disable mips32r5
4069             disable mips64r6
4070             disable msa
4071         ;;
4072     esac
4073
4074 elif enabled ppc; then
4075
4076     disable ldbrx
4077
4078     case $(tolower $cpu) in
4079         601|ppc601|powerpc601)
4080             cpuflags="-mcpu=601"
4081             disable altivec
4082         ;;
4083         603*|ppc603*|powerpc603*)
4084             cpuflags="-mcpu=603"
4085             disable altivec
4086         ;;
4087         604*|ppc604*|powerpc604*)
4088             cpuflags="-mcpu=604"
4089             disable altivec
4090         ;;
4091         g3|75*|ppc75*|powerpc75*)
4092             cpuflags="-mcpu=750"
4093             disable altivec
4094         ;;
4095         g4|745*|ppc745*|powerpc745*)
4096             cpuflags="-mcpu=7450"
4097             disable vsx
4098         ;;
4099         74*|ppc74*|powerpc74*)
4100             cpuflags="-mcpu=7400"
4101             disable vsx
4102         ;;
4103         g5|970|ppc970|powerpc970)
4104             cpuflags="-mcpu=970"
4105             disable vsx
4106         ;;
4107         power[3-6]*)
4108             cpuflags="-mcpu=$cpu"
4109             disable vsx
4110         ;;
4111         power[7-8]*)
4112             cpuflags="-mcpu=$cpu"
4113         ;;
4114         cell)
4115             cpuflags="-mcpu=cell"
4116             enable ldbrx
4117             disable vsx
4118         ;;
4119         e500mc)
4120             cpuflags="-mcpu=e500mc"
4121             disable altivec
4122         ;;
4123         e500v2)
4124             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4125             disable altivec
4126             disable dcbzl
4127         ;;
4128         e500)
4129             cpuflags="-mcpu=8540 -mhard-float"
4130             disable altivec
4131             disable dcbzl
4132         ;;
4133     esac
4134
4135 elif enabled sparc; then
4136
4137     case $cpu in
4138         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4139             cpuflags="-mcpu=$cpu"
4140         ;;
4141         ultrasparc*|niagara[234])
4142             cpuflags="-mcpu=$cpu"
4143         ;;
4144     esac
4145
4146 elif enabled x86; then
4147
4148     case $cpu in
4149         i[345]86|pentium)
4150             cpuflags="-march=$cpu"
4151             disable i686
4152             disable mmx
4153         ;;
4154         # targets that do NOT support nopl and conditional mov (cmov)
4155         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4156             cpuflags="-march=$cpu"
4157             disable i686
4158         ;;
4159         # targets that do support nopl and conditional mov (cmov)
4160         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4161         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4162             cpuflags="-march=$cpu"
4163             enable i686
4164             enable fast_cmov
4165         ;;
4166         # targets that do support conditional mov but on which it's slow
4167         pentium4|pentium4m|prescott|nocona)
4168             cpuflags="-march=$cpu"
4169             enable i686
4170             disable fast_cmov
4171         ;;
4172     esac
4173
4174 fi
4175
4176 if [ "$cpu" != generic ]; then
4177     add_cflags  $cpuflags
4178     add_asflags $cpuflags
4179 fi
4180
4181 # compiler sanity check
4182 check_exec <<EOF
4183 int main(void){ return 0; }
4184 EOF
4185 if test "$?" != 0; then
4186     echo "$cc is unable to create an executable file."
4187     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4188         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4189         echo "Only do this if you know what cross compiling means."
4190     fi
4191     die "C compiler test failed."
4192 fi
4193
4194 add_cppflags -D_ISOC99_SOURCE
4195 add_cxxflags -D__STDC_CONSTANT_MACROS
4196 check_cflags -std=c99
4197 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4198 #include <stdlib.h>
4199 EOF
4200 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4201 #include <stdlib.h>
4202 EOF
4203
4204 add_host_cppflags -D_ISOC99_SOURCE
4205 check_host_cflags -std=c99
4206 check_host_cflags -Wall
4207 check_host_cflags -O3
4208
4209 check_64bit(){
4210     arch32=$1
4211     arch64=$2
4212     expr=$3
4213     check_code cc "" "int test[2*($expr) - 1]" &&
4214         subarch=$arch64 || subarch=$arch32
4215 }
4216
4217 case "$arch" in
4218     aarch64|alpha|ia64)
4219         spic=$shared
4220     ;;
4221     mips)
4222         check_64bit mips mips64 '_MIPS_SIM > 1'
4223         spic=$shared
4224     ;;
4225     parisc)
4226         check_64bit parisc parisc64 'sizeof(void *) > 4'
4227         spic=$shared
4228     ;;
4229     ppc)
4230         check_64bit ppc ppc64 'sizeof(void *) > 4'
4231         spic=$shared
4232     ;;
4233     s390)
4234         check_64bit s390 s390x 'sizeof(void *) > 4'
4235         spic=$shared
4236     ;;
4237     sparc)
4238         check_64bit sparc sparc64 'sizeof(void *) > 4'
4239         spic=$shared
4240     ;;
4241     x86)
4242         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4243         # Treat x32 as x64 for now. Note it also needs spic=$shared
4244         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4245             subarch=x86_64
4246         if test "$subarch" = "x86_64"; then
4247             spic=$shared
4248         fi
4249     ;;
4250     ppc)
4251         check_cc <<EOF && subarch="ppc64"
4252         int test[(int)sizeof(char*) - 7];
4253 EOF
4254     ;;
4255 esac
4256
4257 enable $subarch
4258 enabled spic && enable_weak pic
4259
4260 # OS specific
4261 case $target_os in
4262     aix)
4263         SHFLAGS=-shared
4264         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4265         enabled shared && add_ldflags -Wl,-brtl
4266         ;;
4267     android)
4268         disable symver
4269         enable section_data_rel_ro
4270         SLIB_INSTALL_NAME='$(SLIBNAME)'
4271         SLIB_INSTALL_LINKS=
4272         # soname not set on purpose
4273         SHFLAGS=-shared
4274         ;;
4275     haiku)
4276         prefix_default="/boot/common"
4277         network_extralibs="-lnetwork"
4278         host_libs=
4279         ;;
4280     sunos)
4281         SHFLAGS='-shared -Wl,-h,$$(@F)'
4282         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4283         network_extralibs="-lsocket -lnsl"
4284         add_cppflags -D__EXTENSIONS__
4285         # When using suncc to build, the Solaris linker will mark
4286         # an executable with each instruction set encountered by
4287         # the Solaris assembler.  As our libraries contain their own
4288         # guards for processor-specific code, instead suppress
4289         # generation of the HWCAPS ELF section on Solaris x86 only.
4290         enabled_all suncc x86 &&
4291             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4292             add_ldflags -Wl,-M,mapfile
4293         nm_default='nm -P -g'
4294         ;;
4295     netbsd)
4296         disable symver
4297         oss_indev_extralibs="-lossaudio"
4298         oss_outdev_extralibs="-lossaudio"
4299         enabled gcc || check_ldflags -Wl,-zmuldefs
4300         ;;
4301     openbsd|bitrig)
4302         disable symver
4303         SHFLAGS='-shared'
4304         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4305         SLIB_INSTALL_LINKS=
4306         oss_indev_extralibs="-lossaudio"
4307         oss_outdev_extralibs="-lossaudio"
4308         ;;
4309     dragonfly)
4310         disable symver
4311         ;;
4312     freebsd)
4313         ;;
4314     bsd/os)
4315         add_extralibs -lpoll -lgnugetopt
4316         strip="strip -d"
4317         ;;
4318     darwin)
4319         enabled ppc && add_asflags -force_cpusubtype_ALL
4320         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4321         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4322         strip="${strip} -x"
4323         add_ldflags -Wl,-dynamic,-search_paths_first
4324         SLIBSUF=".dylib"
4325         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4326         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4327         objformat="macho"
4328         enabled x86_64 && objformat="macho64"
4329         enabled_any pic shared x86_64 ||
4330             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4331         ;;
4332     mingw32*)
4333         if test $target_os = "mingw32ce"; then
4334             disable network
4335         else
4336             target_os=mingw32
4337         fi
4338         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4339         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4340         LIBTARGET=i386
4341         if enabled x86_64; then
4342             LIBTARGET="i386:x86-64"
4343         elif enabled arm; then
4344             LIBTARGET=arm-wince
4345         fi
4346         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4347         check_ldflags -Wl,--nxcompat
4348         check_ldflags -Wl,--dynamicbase
4349         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4350         shlibdir_default="$bindir_default"
4351         SLIBPREF=""
4352         SLIBSUF=".dll"
4353         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4354         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4355         dlltool="${cross_prefix}dlltool"
4356         if check_cmd lib.exe -list; then
4357             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4358             if enabled x86_64; then
4359                 LIBTARGET=x64
4360             fi
4361         elif check_cmd $dlltool --version; then
4362             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4363         fi
4364         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4365         SLIB_INSTALL_LINKS=
4366         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4367         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4368         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4369         objformat="win32"
4370         ranlib=:
4371         enable dos_paths
4372         ;;
4373     win32|win64)
4374         disable symver
4375         if enabled shared; then
4376             # Link to the import library instead of the normal static library
4377             # for shared libs.
4378             LD_LIB='%.lib'
4379             # Cannot build both shared and static libs with MSVC or icl.
4380             disable static
4381         fi
4382         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4383         shlibdir_default="$bindir_default"
4384         SLIBPREF=""
4385         SLIBSUF=".dll"
4386         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4387         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4388         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4389         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4390         SLIB_INSTALL_LINKS=
4391         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4392         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4393         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4394         objformat="win32"
4395         ranlib=:
4396         enable dos_paths
4397         ;;
4398     cygwin*)
4399         target_os=cygwin
4400         shlibdir_default="$bindir_default"
4401         SLIBPREF="cyg"
4402         SLIBSUF=".dll"
4403         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4404         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4405         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4406         SLIB_INSTALL_LINKS=
4407         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4408         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4409         objformat="win32"
4410         enable dos_paths
4411         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4412         ;;
4413     *-dos|freedos|opendos)
4414         network_extralibs="-lsocket"
4415         objformat="coff"
4416         enable dos_paths
4417         add_cppflags -U__STRICT_ANSI__
4418         ;;
4419     linux)
4420         enable dv1394
4421         enable section_data_rel_ro
4422         ;;
4423     irix*)
4424         target_os=irix
4425         ranlib="echo ignoring ranlib"
4426         ;;
4427     os/2*)
4428         strip="lxlite -CS"
4429         ln_s="cp -f"
4430         objformat="aout"
4431         add_cppflags -D_GNU_SOURCE
4432         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4433         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4434         LIBSUF="_s.a"
4435         SLIBPREF=""
4436         SLIBSUF=".dll"
4437         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4438         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4439         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4440             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4441             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4442             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4443             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4444         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4445             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4446         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4447         enable dos_paths
4448         enable_weak os2threads
4449         ;;
4450     gnu/kfreebsd)
4451         add_cppflags -D_BSD_SOURCE
4452         ;;
4453     gnu)
4454         ;;
4455     qnx)
4456         add_cppflags -D_QNX_SOURCE
4457         network_extralibs="-lsocket"
4458         ;;
4459     symbian)
4460         SLIBSUF=".dll"
4461         enable dos_paths
4462         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4463         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4464         add_ldflags -Wl,--target1-abs,--no-undefined \
4465                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4466                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4467         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4468                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4469                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4470         ;;
4471     osf1)
4472         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4473         ;;
4474     minix)
4475         ;;
4476     plan9)
4477         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4478                      -D_REENTRANT_SOURCE        \
4479                      -D_RESEARCH_SOURCE         \
4480                      -DFD_SETSIZE=96            \
4481                      -DHAVE_SOCK_OPTS
4482         add_compat strtod.o strtod=avpriv_strtod
4483         network_extralibs='-lbsd'
4484         exeobjs=compat/plan9/main.o
4485         disable ffserver
4486         cp_f='cp'
4487         ;;
4488     none)
4489         ;;
4490     *)
4491         die "Unknown OS '$target_os'."
4492         ;;
4493 esac
4494
4495 # determine libc flavour
4496
4497 probe_libc(){
4498     pfx=$1
4499     pfx_no_=${pfx%_}
4500     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4501     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4502         eval ${pfx}libc_type=uclibc
4503         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4504     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4505         eval ${pfx}libc_type=glibc
4506         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4507     # MinGW headers can be installed on Cygwin, so check for newlib first.
4508     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4509         eval ${pfx}libc_type=newlib
4510         add_${pfx}cppflags -U__STRICT_ANSI__
4511     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4512     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4513         eval ${pfx}libc_type=mingw64
4514         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4515             add_compat msvcrt/snprintf.o
4516             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4517         fi
4518         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4519         eval test \$${pfx_no_}cc_type = "gcc" &&
4520             add_${pfx}cppflags -D__printf__=__gnu_printf__
4521     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4522          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4523         eval ${pfx}libc_type=mingw32
4524         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4525             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4526             die "ERROR: MinGW32 runtime version must be >= 3.15."
4527         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4528         eval test \$${pfx_no_}cc_type = "gcc" &&
4529             add_${pfx}cppflags -D__printf__=__gnu_printf__
4530     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4531         eval ${pfx}libc_type=msvcrt
4532         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4533             if [ "$pfx" = host_ ]; then
4534                 add_host_cppflags -Dsnprintf=_snprintf
4535             else
4536                 add_compat strtod.o strtod=avpriv_strtod
4537                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4538                                              _snprintf=avpriv_snprintf  \
4539                                              vsnprintf=avpriv_vsnprintf
4540             fi
4541         fi
4542         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4543         # 0x601 by default unless something else is set by the user.
4544         # This can easily lead to us detecting functions only present
4545         # in such new versions and producing binaries requiring windows 7.0.
4546         # Therefore explicitly set the default to XP unless the user has
4547         # set something else on the command line.
4548         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4549         # family. For these cases, configure is free to use any functions
4550         # found in the SDK headers by default. (Alternatively, we could force
4551         # _WIN32_WINNT to 0x0602 in that case.)
4552         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4553             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4554 #ifdef WINAPI_FAMILY
4555 #include <winapifamily.h>
4556 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4557 #error not desktop
4558 #endif
4559 #endif
4560 EOF
4561     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4562         eval ${pfx}libc_type=klibc
4563     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4564         eval ${pfx}libc_type=bionic
4565     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4566         eval ${pfx}libc_type=solaris
4567         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4568     fi
4569     check_${pfx}cc <<EOF
4570 #include <time.h>
4571 void *v = localtime_r;
4572 EOF
4573 test "$?" != 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
4574 #include <time.h>
4575 void *v = localtime_r;
4576 EOF
4577
4578 }
4579
4580 probe_libc
4581 test -n "$libc_type" && enable libc_$libc_type
4582 probe_libc host_
4583 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4584
4585 case $libc_type in
4586     bionic)
4587         add_compat strtod.o strtod=avpriv_strtod
4588         ;;
4589 esac
4590
4591 # hacks for compiler/libc/os combinations
4592
4593 if enabled_all tms470 libc_glibc; then
4594     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4595     add_cppflags -D__USER_LABEL_PREFIX__=
4596     add_cppflags -D__builtin_memset=memset
4597     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4598     add_cflags   -pds=48    # incompatible redefinition of macro
4599 fi
4600
4601 if enabled_all ccc libc_glibc; then
4602     add_ldflags -Wl,-z,now  # calls to libots crash without this
4603 fi
4604
4605 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4606     add_cppflags '-I\$(SRC_PATH)/compat/float'
4607
4608 esc(){
4609     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4610 }
4611
4612 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4613
4614 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4615
4616 set_default libdir
4617 : ${shlibdir_default:="$libdir"}
4618 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4619
4620 set_default $PATHS_LIST
4621 set_default nm
4622
4623 # we need to build at least one lib type
4624 if ! enabled_any static shared; then
4625     cat <<EOF
4626 At least one library type must be built.
4627 Specify --enable-static to build the static libraries or --enable-shared to
4628 build the shared libraries as well. To only build the shared libraries specify
4629 --disable-static in addition to --enable-shared.
4630 EOF
4631     exit 1;
4632 fi
4633
4634 die_license_disabled() {
4635     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4636 }
4637
4638 die_license_disabled_gpl() {
4639     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4640 }
4641
4642 die_license_disabled gpl frei0r
4643 die_license_disabled gpl libcdio
4644 die_license_disabled gpl libsmbclient
4645 die_license_disabled gpl libutvideo
4646 die_license_disabled gpl libvidstab
4647 die_license_disabled gpl libx264
4648 die_license_disabled gpl libx265
4649 die_license_disabled gpl libxavs
4650 die_license_disabled gpl libxvid
4651 die_license_disabled gpl libzvbi
4652 die_license_disabled gpl x11grab
4653
4654 die_license_disabled nonfree libaacplus
4655 die_license_disabled nonfree libfaac
4656 die_license_disabled nonfree nvenc
4657 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4658 enabled gpl && die_license_disabled_gpl nonfree openssl
4659
4660 die_license_disabled version3 libopencore_amrnb
4661 die_license_disabled version3 libopencore_amrwb
4662 die_license_disabled version3 libsmbclient
4663 die_license_disabled version3 libvo_aacenc
4664 die_license_disabled version3 libvo_amrwbenc
4665
4666 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4667
4668 disabled optimizations || check_cflags -fomit-frame-pointer
4669
4670 enable_weak_pic() {
4671     disabled pic && return
4672     enable pic
4673     add_cppflags -DPIC
4674     case "$target_os" in
4675     mingw*|cygwin*)
4676         ;;
4677     *)
4678         add_cflags -fPIC
4679         ;;
4680     esac
4681     add_asflags  -fPIC
4682 }
4683
4684 enabled pic && enable_weak_pic
4685
4686 check_cc <<EOF || die "Symbol mangling check failed."
4687 int ff_extern;
4688 EOF
4689 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4690 extern_prefix=${sym%%ff_extern*}
4691
4692 check_cc <<EOF && enable_weak inline_asm
4693 void foo(void) { __asm__ volatile ("" ::); }
4694 EOF
4695
4696 _restrict=
4697 for restrict_keyword in restrict __restrict__ __restrict; do
4698     check_cc <<EOF && _restrict=$restrict_keyword && break
4699 void foo(char * $restrict_keyword p);
4700 EOF
4701 done
4702
4703 check_cc <<EOF && enable pragma_deprecated
4704 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4705 EOF
4706
4707 check_cc <<EOF && enable attribute_packed
4708 struct { int x; } __attribute__((packed)) x;
4709 EOF
4710
4711 check_cc <<EOF && enable attribute_may_alias
4712 union { int x; } __attribute__((may_alias)) x;
4713 EOF
4714
4715 check_cc <<EOF || die "endian test failed"
4716 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4717 EOF
4718 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4719
4720 if ! enabled ppc64 || enabled bigendian; then
4721     disable vsx
4722 fi
4723
4724 check_gas() {
4725     log "check_gas using '$as' as AS"
4726     # :vararg is used on aarch64, arm and ppc altivec
4727     check_as <<EOF || return 1
4728 .macro m n, y:vararg=0
4729 \n: .int \y
4730 .endm
4731 m x
4732 EOF
4733     # .altmacro is only used in arm asm
4734     ! enabled arm || check_as <<EOF || return 1
4735 .altmacro
4736 EOF
4737     enable gnu_as
4738     return 0
4739 }
4740
4741 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4742     nogas=:
4743     enabled_any arm aarch64 && nogas=die
4744     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4745     as_noop=-v
4746
4747     case $as_type in
4748         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4749         gcc)  gaspp_as_type=gas ;;
4750         *)    gaspp_as_type=$as_type ;;
4751     esac
4752
4753     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4754
4755     test "${as#*gas-preprocessor.pl}" != "$as" ||
4756     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4757         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4758
4759     if ! check_gas ; then
4760         as=${gas:=$as}
4761         check_gas || \
4762             $nogas "GNU assembler not found, install/update gas-preprocessor"
4763     fi
4764
4765     check_as <<EOF && enable as_func
4766 .func test
4767 .endfunc
4768 EOF
4769 fi
4770
4771 check_inline_asm inline_asm_labels '"1:\n"'
4772
4773 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4774
4775 if enabled aarch64; then
4776     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4777     # internal assembler in clang 3.3 does not support this instruction
4778     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4779     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4780
4781     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4782
4783 elif enabled alpha; then
4784
4785     check_cflags -mieee
4786
4787 elif enabled arm; then
4788
4789     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4790
4791     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4792 float func(float a, float b){ return a+b; }
4793 EOF
4794
4795     enabled thumb && check_cflags -mthumb || check_cflags -marm
4796
4797     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4798         enable vfp_args
4799     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4800         enable vfp_args
4801     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4802         case "${cross_prefix:-$cc}" in
4803             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4804             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4805 __asm__ (".eabi_attribute 28, 1");
4806 int main(void) { return 0; }
4807 EOF
4808         esac
4809         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4810     fi
4811
4812     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4813     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4814     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4815     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4816     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4817     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4818     enabled setend  && check_insn setend  'setend be'
4819
4820     [ $target_os = linux ] || [ $target_os = android ] ||
4821         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4822             $ARCH_EXT_LIST_ARM
4823
4824     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4825
4826     check_as <<EOF && enable as_dn_directive
4827 ra .dn d0.i16
4828 .unreq ra
4829 EOF
4830
4831     # llvm's integrated assembler supports .object_arch from llvm 3.5
4832     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4833 .object_arch armv4
4834 EOF
4835
4836     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4837
4838 elif enabled mips; then
4839
4840     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4841     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4842     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4843
4844     # Enable minimum ISA based on selected options
4845     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4846         add_cflags "-mips64r2"
4847         add_asflags "-mips64r2"
4848     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4849         add_cflags "-mips64"
4850         add_asflags "-mips64"
4851     elif enabled mipsdspr1 || enabled mipsdspr2; then
4852         add_cflags "-mips32r2 -mfp32"
4853         add_asflags "-mips32r2 -mfp32"
4854     elif enabled mips32r5 || enabled mips64r6; then
4855         check_cflags "-mfp64"
4856         check_ldflags "-mfp64"
4857     fi
4858
4859     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4860      check_ldflags "-mips32r5" &&
4861      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4862     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4863      check_ldflags "-mips64r6" &&
4864      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4865     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4866      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4867     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4868      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4869     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4870      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4871     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4872      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4873
4874     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4875     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"