configure: Fail if CUDA enabled but not found
[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   --install-name-dir=DIR   Darwin directory name for installed targets
95
96 Licensing options:
97   --enable-gpl             allow use of GPL code, the resulting libs
98                            and binaries will be under GPL [no]
99   --enable-version3        upgrade (L)GPL to version 3 [no]
100   --enable-nonfree         allow use of nonfree code, the resulting libs
101                            and binaries will be unredistributable [no]
102
103 Configuration options:
104   --disable-static         do not build static libraries [no]
105   --enable-shared          build shared libraries [no]
106   --enable-small           optimize for size instead of speed
107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
108   --enable-gray            enable full grayscale support (slower color)
109   --disable-swscale-alpha  disable alpha channel support in swscale
110   --disable-all            disable building components, libraries and programs
111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
112   --enable-raise-major     increase major version numbers in sonames [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Hardware accelerators:
153   --disable-d3d11va        disable D3D11VA code [autodetect]
154   --disable-dxva2          disable DXVA2 code [autodetect]
155   --disable-vaapi          disable VAAPI code [autodetect]
156   --disable-vda            disable VDA code [autodetect]
157   --disable-vdpau          disable VDPAU code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --disable-audiotoolbox   enable AudioToolbox decoders and encoders [autodetect]
198   --enable-avisynth        enable reading of AviSynth script files [no]
199   --disable-bzlib          disable bzlib [autodetect]
200   --enable-cuda            enable dynamically linked CUDA [no]
201   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
202   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
203   --enable-frei0r          enable frei0r video filtering [no]
204   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
205                            if openssl, librtmp or gmp is not used [no]
206   --enable-gmp             enable gmp, needed for rtmp(t)e support
207                            if openssl or librtmp is not used [no]
208   --enable-gnutls          enable gnutls, needed for https support
209                            if openssl is not used [no]
210   --disable-iconv          disable iconv [autodetect]
211   --enable-jni             enable JNI support [no]
212   --enable-ladspa          enable LADSPA audio filtering [no]
213   --enable-libass          enable libass subtitles rendering,
214                            needed for subtitles and ass filter [no]
215   --enable-libbluray       enable BluRay reading using libbluray [no]
216   --enable-libbs2b         enable bs2b DSP library [no]
217   --enable-libcaca         enable textual display using libcaca [no]
218   --enable-libcelt         enable CELT decoding via libcelt [no]
219   --enable-libcdio         enable audio CD grabbing with libcdio [no]
220   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
221                            and libraw1394 [no]
222   --enable-libfaac         enable AAC encoding via libfaac [no]
223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
227   --enable-libgme          enable Game Music Emu via libgme [no]
228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
232   --enable-libmfx          enable HW acceleration through libmfx
233   --enable-libmodplug      enable ModPlug via libmodplug [no]
234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
235   --enable-libnut          enable NUT (de)muxing via libnut,
236                            native (de)muxer exists [no]
237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
239   --enable-libopencv       enable video filtering via libopencv [no]
240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
242   --enable-libopus         enable Opus de/encoding via libopus [no]
243   --enable-libpulse        enable Pulseaudio input via libpulse [no]
244   --enable-librubberband   enable rubberband needed for rubberband filter [no]
245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
250   --enable-libsoxr         enable Include libsoxr resampling [no]
251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
252   --enable-libssh          enable SFTP protocol via libssh [no]
253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
254   --enable-libtheora       enable Theora encoding via libtheora [no]
255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
258   --enable-libvidstab      enable video stabilization using vid.stab [no]
259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
261                            native implementation exists [no]
262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
264   --enable-libwebp         enable WebP encoding via libwebp [no]
265   --enable-libx264         enable H.264 encoding via x264 [no]
266   --enable-libx265         enable HEVC encoding via x265 [no]
267   --enable-libxavs         enable AVS encoding via xavs [no]
268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
272   --enable-libxvid         enable Xvid encoding via xvidcore,
273                            native MPEG-4/Xvid encoder exists [no]
274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
275   --enable-libzmq          enable message passing via libzmq [no]
276   --enable-libzvbi         enable teletext support via libzvbi [no]
277   --disable-lzma           disable lzma [autodetect]
278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
279   --enable-mediacodec      enable Android MediaCodec support [no]
280   --enable-mmal            enable decoding via MMAL [no]
281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
282   --enable-nvenc           enable NVIDIA NVENC support [no]
283   --enable-openal          enable OpenAL 1.1 capture support [no]
284   --enable-opencl          enable OpenCL code
285   --enable-opengl          enable OpenGL rendering [no]
286   --enable-openssl         enable openssl, needed for https support
287                            if gnutls is not used [no]
288   --disable-schannel       disable SChannel SSP, needed for TLS support on
289                            Windows if openssl and gnutls are not used [autodetect]
290   --disable-sdl            disable sdl [autodetect]
291   --disable-securetransport disable Secure Transport, needed for TLS support
292                            on OSX if openssl and gnutls are not used [autodetect]
293   --disable-videotoolbox   disable VideoToolbox code [autodetect]
294   --enable-x11grab         enable X11 grabbing (legacy) [no]
295   --disable-xlib           disable xlib [autodetect]
296   --disable-zlib           disable zlib [autodetect]
297
298 Toolchain options:
299   --arch=ARCH              select architecture [$arch]
300   --cpu=CPU                select the minimum required CPU (affects
301                            instruction selection, may crash on older CPUs)
302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
303   --progs-suffix=SUFFIX    program name suffix []
304   --enable-cross-compile   assume a cross-compiler is used
305   --sysroot=PATH           root of cross-build tree
306   --sysinclude=PATH        location of cross-build system headers
307   --target-os=OS           compiler targets OS [$target_os]
308   --target-exec=CMD        command to run executables on target
309   --target-path=DIR        path to view of build directory on target
310   --target-samples=DIR     path to samples directory on target
311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
312   --toolchain=NAME         set tool defaults according to NAME
313   --nm=NM                  use nm tool NM [$nm_default]
314   --ar=AR                  use archive tool AR [$ar_default]
315   --as=AS                  use assembler AS [$as_default]
316   --strip=STRIP            use strip tool STRIP [$strip_default]
317   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
318   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
319   --cc=CC                  use C compiler CC [$cc_default]
320   --cxx=CXX                use C compiler CXX [$cxx_default]
321   --objcc=OCC              use ObjC compiler OCC [$cc_default]
322   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
323   --ld=LD                  use linker LD [$ld_default]
324   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
325   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
326   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
327   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
328   --host-cc=HOSTCC         use host C compiler HOSTCC
329   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
330   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
331   --host-ld=HOSTLD         use host linker HOSTLD
332   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
333   --host-libs=HLIBS        use libs HLIBS when linking for host
334   --host-os=OS             compiler host OS [$target_os]
335   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
336   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
337   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
338   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
339   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
340   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
341   --extra-libs=ELIBS       add ELIBS [$ELIBS]
342   --extra-version=STRING   version string suffix []
343   --optflags=OPTFLAGS      override optimization-related compiler flags
344   --build-suffix=SUFFIX    library name suffix []
345   --enable-pic             build position-independent code
346   --enable-thumb           compile for Thumb instruction set
347   --enable-lto             use link-time optimization
348   --env="ENV=override"     override the environment variables
349
350 Advanced options (experts only):
351   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
352   --custom-allocator=NAME  use a supported custom allocator
353   --disable-symver         disable symbol versioning
354   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
355   --disable-safe-bitstream-reader
356                            disable buffer boundary checking in bitreaders
357                            (faster, but may crash)
358   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
359   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
360
361 Optimization options (experts only):
362   --disable-asm            disable all assembly optimizations
363   --disable-altivec        disable AltiVec optimizations
364   --disable-vsx            disable VSX optimizations
365   --disable-power8         disable POWER8 optimizations
366   --disable-amd3dnow       disable 3DNow! optimizations
367   --disable-amd3dnowext    disable 3DNow! extended optimizations
368   --disable-mmx            disable MMX optimizations
369   --disable-mmxext         disable MMXEXT optimizations
370   --disable-sse            disable SSE optimizations
371   --disable-sse2           disable SSE2 optimizations
372   --disable-sse3           disable SSE3 optimizations
373   --disable-ssse3          disable SSSE3 optimizations
374   --disable-sse4           disable SSE4 optimizations
375   --disable-sse42          disable SSE4.2 optimizations
376   --disable-avx            disable AVX optimizations
377   --disable-xop            disable XOP optimizations
378   --disable-fma3           disable FMA3 optimizations
379   --disable-fma4           disable FMA4 optimizations
380   --disable-avx2           disable AVX2 optimizations
381   --disable-aesni          disable AESNI optimizations
382   --disable-armv5te        disable armv5te optimizations
383   --disable-armv6          disable armv6 optimizations
384   --disable-armv6t2        disable armv6t2 optimizations
385   --disable-vfp            disable VFP optimizations
386   --disable-neon           disable NEON optimizations
387   --disable-inline-asm     disable use of inline assembly
388   --disable-yasm           disable use of nasm/yasm assembly
389   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
390   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
391   --disable-msa            disable MSA optimizations
392   --disable-mipsfpu        disable floating point MIPS optimizations
393   --disable-mmi            disable Loongson SIMD optimizations
394   --disable-fast-unaligned consider unaligned accesses slow
395
396 Developer options (useful when working on FFmpeg itself):
397   --disable-debug          disable debugging symbols
398   --enable-debug=LEVEL     set the debug level [$debuglevel]
399   --disable-optimizations  disable compiler optimizations
400   --enable-extra-warnings  enable more compiler warnings
401   --disable-stripping      disable stripping of executables and shared libraries
402   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
403                            2 causes a slowdown at runtime.
404   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
405   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
406                            leaks and errors, using the specified valgrind binary.
407                            Cannot be combined with --target-exec
408   --enable-ftrapv          Trap arithmetic overflows
409   --samples=PATH           location of test samples for FATE, if not set use
410                            \$FATE_SAMPLES at make invocation time.
411   --enable-neon-clobber-test check NEON registers for clobbering (should be
412                            used only for debugging purposes)
413   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
414                            should be used only for debugging purposes)
415   --enable-random          randomly enable/disable components
416   --disable-random
417   --enable-random=LIST     randomly enable/disable specific components or
418   --disable-random=LIST    component groups. LIST is a comma-separated list
419                            of NAME[:PROB] entries where NAME is a component
420                            (group) and PROB the probability associated with
421                            NAME (default 0.5).
422   --random-seed=VALUE      seed value for --enable/disable-random
423   --disable-valgrind-backtrace do not print a backtrace under Valgrind
424                            (only applies to --disable-optimizations builds)
425
426 NOTE: Object files are built at the place where configure is launched.
427 EOF
428   exit 0
429 }
430
431 quotes='""'
432 if test -t 1 && which tput >/dev/null 2>&1; then
433     ncolors=$(tput colors)
434     if test -n "$ncolors" && test $ncolors -ge 8; then
435         bold_color=$(tput bold)
436         warn_color=$(tput setaf 3)
437         error_color=$(tput setaf 1)
438         reset_color=$(tput sgr0)
439     fi
440     # 72 used instead of 80 since that's the default of pr
441     ncols=$(tput cols)
442 fi
443 : ${ncols:=72}
444
445 log(){
446     echo "$@" >> $logfile
447 }
448
449 log_file(){
450     log BEGIN $1
451     pr -n -t $1 >> $logfile
452     log END $1
453 }
454
455 warn(){
456     log "WARNING: $*"
457     WARNINGS="${WARNINGS}WARNING: $*\n"
458 }
459
460 die(){
461     log "$@"
462     echo "$error_color$bold_color$@$reset_color"
463     cat <<EOF
464
465 If you think configure made a mistake, make sure you are using the latest
466 version from Git.  If the latest version fails, report the problem to the
467 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
468 EOF
469     if disabled logging; then
470         cat <<EOF
471 Rerun configure with logging enabled (do not use --disable-logging), and
472 include the log this produces with your report.
473 EOF
474     else
475         cat <<EOF
476 Include the log file "$logfile" produced by configure as this will help
477 solve the problem.
478 EOF
479     fi
480     exit 1
481 }
482
483 # Avoid locale weirdness, besides we really just want to translate ASCII.
484 toupper(){
485     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
486 }
487
488 tolower(){
489     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
490 }
491
492 c_escape(){
493     echo "$*" | sed 's/["\\]/\\\0/g'
494 }
495
496 sh_quote(){
497     v=$(echo "$1" | sed "s/'/'\\\\''/g")
498     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
499     echo "$v"
500 }
501
502 cleanws(){
503     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
504 }
505
506 filter(){
507     pat=$1
508     shift
509     for v; do
510         eval "case $v in $pat) echo $v ;; esac"
511     done
512 }
513
514 filter_out(){
515     pat=$1
516     shift
517     for v; do
518         eval "case $v in $pat) ;; *) echo $v ;; esac"
519     done
520 }
521
522 map(){
523     m=$1
524     shift
525     for v; do eval $m; done
526 }
527
528 add_suffix(){
529     suffix=$1
530     shift
531     for v; do echo ${v}${suffix}; done
532 }
533
534 set_all(){
535     value=$1
536     shift
537     for var in $*; do
538         eval $var=$value
539     done
540 }
541
542 set_weak(){
543     value=$1
544     shift
545     for var; do
546         eval : \${$var:=$value}
547     done
548 }
549
550 sanitize_var_name(){
551     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
552 }
553
554 set_safe(){
555     var=$1
556     shift
557     eval $(sanitize_var_name "$var")='$*'
558 }
559
560 get_safe(){
561     eval echo \$$(sanitize_var_name "$1")
562 }
563
564 pushvar(){
565     for pvar in $*; do
566         eval level=\${${pvar}_level:=0}
567         eval ${pvar}_${level}="\$$pvar"
568         eval ${pvar}_level=$(($level+1))
569     done
570 }
571
572 popvar(){
573     for pvar in $*; do
574         eval level=\${${pvar}_level:-0}
575         test $level = 0 && continue
576         eval level=$(($level-1))
577         eval $pvar="\${${pvar}_${level}}"
578         eval ${pvar}_level=$level
579         eval unset ${pvar}_${level}
580     done
581 }
582
583 enable(){
584     set_all yes $*
585 }
586
587 disable(){
588     set_all no $*
589 }
590
591 enable_weak(){
592     set_weak yes $*
593 }
594
595 disable_weak(){
596     set_weak no $*
597 }
598
599 enable_safe(){
600     for var; do
601         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
602     done
603 }
604
605 disable_safe(){
606     for var; do
607         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
608     done
609 }
610
611 do_enable_deep(){
612     for var; do
613         enabled $var && continue
614         eval sel="\$${var}_select"
615         eval sgs="\$${var}_suggest"
616         pushvar var sgs
617         enable_deep $sel
618         popvar sgs
619         enable_deep_weak $sgs
620         popvar var
621     done
622 }
623
624 enable_deep(){
625     do_enable_deep $*
626     enable $*
627 }
628
629 enable_deep_weak(){
630     for var; do
631         disabled $var && continue
632         pushvar var
633         do_enable_deep $var
634         popvar var
635         enable_weak $var
636     done
637 }
638
639 enabled(){
640     test "${1#!}" = "$1" && op='=' || op=!=
641     eval test "x\$${1#!}" $op "xyes"
642 }
643
644 disabled(){
645     test "${1#!}" = "$1" && op='=' || op=!=
646     eval test "x\$${1#!}" $op "xno"
647 }
648
649 enabled_all(){
650     for opt; do
651         enabled $opt || return 1
652     done
653 }
654
655 disabled_all(){
656     for opt; do
657         disabled $opt || return 1
658     done
659 }
660
661 enabled_any(){
662     for opt; do
663         enabled $opt && return 0
664     done
665 }
666
667 disabled_any(){
668     for opt; do
669         disabled $opt && return 0
670     done
671     return 1
672 }
673
674 set_default(){
675     for opt; do
676         eval : \${$opt:=\$${opt}_default}
677     done
678 }
679
680 is_in(){
681     value=$1
682     shift
683     for var in $*; do
684         [ $var = $value ] && return 0
685     done
686     return 1
687 }
688
689 do_check_deps(){
690     for cfg; do
691         cfg="${cfg#!}"
692         enabled ${cfg}_checking && die "Circular dependency for $cfg."
693         disabled ${cfg}_checking && continue
694         enable ${cfg}_checking
695         append allopts $cfg
696
697         eval dep_all="\$${cfg}_deps"
698         eval dep_any="\$${cfg}_deps_any"
699         eval dep_sel="\$${cfg}_select"
700         eval dep_sgs="\$${cfg}_suggest"
701         eval dep_ifa="\$${cfg}_if"
702         eval dep_ifn="\$${cfg}_if_any"
703
704         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
705         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
706         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
707
708         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
709         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
710         enabled_all  $dep_all || disable $cfg
711         enabled_any  $dep_any || disable $cfg
712         disabled_any $dep_sel && disable $cfg
713
714         if enabled $cfg; then
715             enable_deep $dep_sel
716             enable_deep_weak $dep_sgs
717         fi
718
719         disable ${cfg}_checking
720     done
721 }
722
723 check_deps(){
724     unset allopts
725
726     do_check_deps "$@"
727
728     for cfg in $allopts; do
729         enabled $cfg || continue
730         eval dep_extralibs="\$${cfg}_extralibs"
731         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
732     done
733 }
734
735 print_config(){
736     pfx=$1
737     files=$2
738     shift 2
739     map 'eval echo "$v \${$v:-no}"' "$@" |
740     awk "BEGIN { split(\"$files\", files) }
741         {
742             c = \"$pfx\" toupper(\$1);
743             v = \$2;
744             sub(/yes/, 1, v);
745             sub(/no/,  0, v);
746             for (f in files) {
747                 file = files[f];
748                 if (file ~ /\\.h\$/) {
749                     printf(\"#define %s %d\\n\", c, v) >>file;
750                 } else if (file ~ /\\.asm\$/) {
751                     printf(\"%%define %s %d\\n\", c, v) >>file;
752                 } else if (file ~ /\\.mak\$/) {
753                     n = -v ? \"\" : \"!\";
754                     printf(\"%s%s=yes\\n\", n, c) >>file;
755                 } else if (file ~ /\\.texi\$/) {
756                     pre = -v ? \"\" : \"@c \";
757                     yesno = \$2;
758                     c2 = tolower(c);
759                     gsub(/_/, \"-\", c2);
760                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
761                 }
762             }
763         }"
764 }
765
766 print_enabled(){
767     suf=$1
768     shift
769     for v; do
770         enabled $v && printf "%s\n" ${v%$suf};
771     done
772 }
773
774 append(){
775     var=$1
776     shift
777     eval "$var=\"\$$var $*\""
778 }
779
780 prepend(){
781     var=$1
782     shift
783     eval "$var=\"$* \$$var\""
784 }
785
786 unique(){
787     var=$1
788     uniq_list=""
789     for tok in $(eval echo \$$var); do
790         uniq_list="$(filter_out $tok $uniq_list) $tok"
791     done
792     eval "$var=\"${uniq_list}\""
793 }
794
795 add_cppflags(){
796     append CPPFLAGS "$@"
797 }
798
799 add_cflags(){
800     append CFLAGS $($cflags_filter "$@")
801 }
802
803 add_cxxflags(){
804     append CXXFLAGS $($cflags_filter "$@")
805 }
806
807 add_asflags(){
808     append ASFLAGS $($asflags_filter "$@")
809 }
810
811 add_objcflags(){
812     append OBJCFLAGS $($objcflags_filter "$@")
813 }
814
815 add_ldflags(){
816     append LDFLAGS $($ldflags_filter "$@")
817 }
818
819 add_ldexeflags(){
820     append LDEXEFLAGS $($ldflags_filter "$@")
821 }
822
823 add_ldlibflags(){
824     append LDLIBFLAGS $($ldflags_filter "$@")
825 }
826
827 add_stripflags(){
828     append ASMSTRIPFLAGS "$@"
829 }
830
831 add_extralibs(){
832     prepend extralibs $($ldflags_filter "$@")
833 }
834
835 add_host_cppflags(){
836     append host_cppflags "$@"
837 }
838
839 add_host_cflags(){
840     append host_cflags $($host_cflags_filter "$@")
841 }
842
843 add_host_ldflags(){
844     append host_ldflags $($host_ldflags_filter "$@")
845 }
846
847 add_compat(){
848     append compat_objs $1
849     shift
850     map 'add_cppflags -D$v' "$@"
851 }
852
853 check_cmd(){
854     log "$@"
855     "$@" >> $logfile 2>&1
856 }
857
858 check_stat(){
859     log check_stat "$@"
860     stat "$1" >> $logfile 2>&1
861 }
862
863 cc_o(){
864     eval printf '%s\\n' $CC_O
865 }
866
867 cc_e(){
868     eval printf '%s\\n' $CC_E
869 }
870
871 check_cc(){
872     log check_cc "$@"
873     cat > $TMPC
874     log_file $TMPC
875     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
876 }
877
878 check_cxx(){
879     log check_cxx "$@"
880     cat > $TMPCPP
881     log_file $TMPCPP
882     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
883 }
884
885 check_objcc(){
886     log check_objcc "$@"
887     cat > $TMPM
888     log_file $TMPM
889     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
890 }
891
892 check_cpp(){
893     log check_cpp "$@"
894     cat > $TMPC
895     log_file $TMPC
896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
897 }
898
899 as_o(){
900     eval printf '%s\\n' $AS_O
901 }
902
903 check_as(){
904     log check_as "$@"
905     cat > $TMPS
906     log_file $TMPS
907     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
908 }
909
910 check_inline_asm(){
911     log check_inline_asm "$@"
912     name="$1"
913     code="$2"
914     shift 2
915     disable $name
916     check_cc "$@" <<EOF && enable $name
917 void foo(void){ __asm__ volatile($code); }
918 EOF
919 }
920
921 check_inline_asm_flags(){
922     log check_inline_asm_flags "$@"
923     name="$1"
924     code="$2"
925     flags=''
926     shift 2
927     while [ "$1" != "" ]; do
928       append flags $1
929       shift
930     done;
931     disable $name
932     cat > $TMPC <<EOF
933 void foo(void){ __asm__ volatile($code); }
934 EOF
935     log_file $TMPC
936     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
937     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
938 }
939
940 check_insn(){
941     log check_insn "$@"
942     check_inline_asm ${1}_inline "\"$2\""
943     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
944 }
945
946 check_yasm(){
947     log check_yasm "$@"
948     echo "$1" > $TMPS
949     log_file $TMPS
950     shift 1
951     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
952 }
953
954 ld_o(){
955     eval printf '%s\\n' $LD_O
956 }
957
958 check_ld(){
959     log check_ld "$@"
960     type=$1
961     shift 1
962     flags=$(filter_out '-l*|*.so' $@)
963     libs=$(filter '-l*|*.so' $@)
964     check_$type $($cflags_filter $flags) || return
965     flags=$($ldflags_filter $flags)
966     libs=$($ldflags_filter $libs)
967     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
968 }
969
970 print_include(){
971     hdr=$1
972     test "${hdr%.h}" = "${hdr}" &&
973         echo "#include $hdr"    ||
974         echo "#include <$hdr>"
975 }
976
977 check_code(){
978     log check_code "$@"
979     check=$1
980     headers=$2
981     code=$3
982     shift 3
983     {
984         for hdr in $headers; do
985             print_include $hdr
986         done
987         echo "int main(void) { $code; return 0; }"
988     } | check_$check "$@"
989 }
990
991 check_cppflags(){
992     log check_cppflags "$@"
993     check_cc "$@" <<EOF && append CPPFLAGS "$@"
994 int x;
995 EOF
996 }
997
998 test_cflags(){
999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_cc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_cflags(){
1007     log check_cflags "$@"
1008     test_cflags "$@" && add_cflags "$@"
1009 }
1010
1011 check_cxxflags(){
1012     log check_cxxflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_objcflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_objcc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_objcflags(){
1028     log check_cflags "$@"
1029     test_objcflags "$@" && add_objcflags "$@"
1030 }
1031
1032 test_ldflags(){
1033     log test_ldflags "$@"
1034     check_ld "cc" "$@" <<EOF
1035 int main(void){ return 0; }
1036 EOF
1037 }
1038
1039 check_ldflags(){
1040     log check_ldflags "$@"
1041     test_ldflags "$@" && add_ldflags "$@"
1042 }
1043
1044 test_stripflags(){
1045     log test_stripflags "$@"
1046     # call check_cc to get a fresh TMPO
1047     check_cc <<EOF
1048 int main(void) { return 0; }
1049 EOF
1050     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1051 }
1052
1053 check_stripflags(){
1054     log check_stripflags "$@"
1055     test_stripflags "$@" && add_stripflags "$@"
1056 }
1057
1058 check_header(){
1059     log check_header "$@"
1060     header=$1
1061     shift
1062     disable_safe $header
1063     check_cpp "$@" <<EOF && enable_safe $header
1064 #include <$header>
1065 int x;
1066 EOF
1067 }
1068
1069 check_header_objcc(){
1070     log check_header_objcc "$@"
1071     rm -f -- "$TMPO"
1072     header=$1
1073     shift
1074     disable_safe $header
1075     {
1076        echo "#include <$header>"
1077        echo "int main(void) { return 0; }"
1078     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1079 }
1080
1081 check_func(){
1082     log check_func "$@"
1083     func=$1
1084     shift
1085     disable $func
1086     check_ld "cc" "$@" <<EOF && enable $func
1087 extern int $func();
1088 int main(void){ $func(); }
1089 EOF
1090 }
1091
1092 check_complexfunc(){
1093     log check_complexfunc "$@"
1094     func=$1
1095     narg=$2
1096     shift 2
1097     test $narg = 2 && args="f, g" || args="f * I"
1098     disable $func
1099     check_ld "cc" "$@" <<EOF && enable $func
1100 #include <complex.h>
1101 #include <math.h>
1102 float foo(complex float f, complex float g) { return $func($args); }
1103 int main(void){ return (int) foo; }
1104 EOF
1105 }
1106
1107 check_mathfunc(){
1108     log check_mathfunc "$@"
1109     func=$1
1110     narg=$2
1111     shift 2
1112     test $narg = 2 && args="f, g" || args="f"
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 #include <math.h>
1116 float foo(float f, float g) { return $func($args); }
1117 int main(void){ return (int) foo; }
1118 EOF
1119 }
1120
1121 check_func_headers(){
1122     log check_func_headers "$@"
1123     headers=$1
1124     funcs=$2
1125     shift 2
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         for func in $funcs; do
1131             echo "long check_$func(void) { return (long) $func; }"
1132         done
1133         echo "int main(void) { return 0; }"
1134     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1135 }
1136
1137 check_class_headers_cpp(){
1138     log check_class_headers_cpp "$@"
1139     headers=$1
1140     classes=$2
1141     shift 2
1142     {
1143         for hdr in $headers; do
1144             echo "#include <$hdr>"
1145         done
1146         echo "int main(void) { "
1147         i=1
1148         for class in $classes; do
1149             echo "$class obj$i;"
1150             i=$(expr $i + 1)
1151         done
1152         echo "return 0; }"
1153     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_cpp_condition(){
1157     log check_cpp_condition "$@"
1158     header=$1
1159     condition=$2
1160     shift 2
1161     check_cpp "$@" <<EOF
1162 #include <$header>
1163 #if !($condition)
1164 #error "unsatisfied condition: $condition"
1165 #endif
1166 EOF
1167 }
1168
1169 check_lib(){
1170     log check_lib "$@"
1171     header="$1"
1172     func="$2"
1173     shift 2
1174     check_header $header && check_func $func "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib2(){
1178     log check_lib2 "$@"
1179     headers="$1"
1180     funcs="$2"
1181     shift 2
1182     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib_cpp(){
1186     log check_lib_cpp "$@"
1187     headers="$1"
1188     classes="$2"
1189     shift 2
1190     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_pkg_config(){
1194     log check_pkg_config "$@"
1195     pkgandversion="$1"
1196     pkg="${1%% *}"
1197     headers="$2"
1198     funcs="$3"
1199     shift 3
1200     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1201     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1202     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1203     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1204         set_safe "${pkg}_cflags" $pkg_cflags   &&
1205         set_safe "${pkg}_libs"   $pkg_libs
1206 }
1207
1208 check_exec(){
1209     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1210 }
1211
1212 check_exec_crash(){
1213     code=$(cat)
1214
1215     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1216     # are safe but may not be available everywhere.  Thus we use
1217     # raise(SIGTERM) instead.  The check is run in a subshell so we
1218     # can redirect the "Terminated" message from the shell.  SIGBUS
1219     # is not defined by standard C so it is used conditionally.
1220
1221     (check_exec "$@") >> $logfile 2>&1 <<EOF
1222 #include <signal.h>
1223 static void sighandler(int sig){
1224     raise(SIGTERM);
1225 }
1226 int foo(void){
1227     $code
1228 }
1229 int (*func_ptr)(void) = foo;
1230 int main(void){
1231     signal(SIGILL, sighandler);
1232     signal(SIGFPE, sighandler);
1233     signal(SIGSEGV, sighandler);
1234 #ifdef SIGBUS
1235     signal(SIGBUS, sighandler);
1236 #endif
1237     return func_ptr();
1238 }
1239 EOF
1240 }
1241
1242 check_type(){
1243     log check_type "$@"
1244     headers=$1
1245     type=$2
1246     shift 2
1247     disable_safe "$type"
1248     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1249 }
1250
1251 check_struct(){
1252     log check_struct "$@"
1253     headers=$1
1254     struct=$2
1255     member=$3
1256     shift 3
1257     disable_safe "${struct}_${member}"
1258     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1259         enable_safe "${struct}_${member}"
1260 }
1261
1262 check_builtin(){
1263     log check_builtin "$@"
1264     name=$1
1265     headers=$2
1266     builtin=$3
1267     shift 3
1268     disable "$name"
1269     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1270 }
1271
1272 check_compile_assert(){
1273     log check_compile_assert "$@"
1274     name=$1
1275     headers=$2
1276     condition=$3
1277     shift 3
1278     disable "$name"
1279     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1280 }
1281
1282 require(){
1283     name="$1"
1284     header="$2"
1285     func="$3"
1286     shift 3
1287     check_lib $header $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require2(){
1291     name="$1"
1292     headers="$2"
1293     func="$3"
1294     shift 3
1295     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require_cpp(){
1299     name="$1"
1300     headers="$2"
1301     classes="$3"
1302     shift 3
1303     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1304 }
1305
1306 use_pkg_config(){
1307     pkg="$1"
1308     check_pkg_config "$@" || return 1
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 require_pkg_config(){
1314     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1315 }
1316
1317 require_libfreetype(){
1318     log require_libfreetype "$@"
1319     pkg="freetype2"
1320     check_cmd $pkg_config --exists --print-errors $pkg \
1321       || die "ERROR: $pkg not found"
1322     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1323     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1324     {
1325         echo "#include <ft2build.h>"
1326         echo "#include FT_FREETYPE_H"
1327         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1328         echo "int main(void) { return 0; }"
1329     } | check_ld "cc" $pkg_cflags $pkg_libs \
1330       && set_safe "${pkg}_cflags" $pkg_cflags \
1331       && set_safe "${pkg}_libs"   $pkg_libs \
1332       || die "ERROR: $pkg not found"
1333     add_cflags    $(get_safe "${pkg}_cflags")
1334     add_extralibs $(get_safe "${pkg}_libs")
1335 }
1336
1337 hostcc_e(){
1338     eval printf '%s\\n' $HOSTCC_E
1339 }
1340
1341 hostcc_o(){
1342     eval printf '%s\\n' $HOSTCC_O
1343 }
1344
1345 check_host_cc(){
1346     log check_host_cc "$@"
1347     cat > $TMPC
1348     log_file $TMPC
1349     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1350 }
1351
1352 check_host_cpp(){
1353     log check_host_cpp "$@"
1354     cat > $TMPC
1355     log_file $TMPC
1356     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1357 }
1358
1359 check_host_cppflags(){
1360     log check_host_cppflags "$@"
1361     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cflags(){
1367     log check_host_cflags "$@"
1368     set -- $($host_cflags_filter "$@")
1369     check_host_cc "$@" <<EOF && append host_cflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cpp_condition(){
1375     log check_host_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     check_host_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 cp_if_changed(){
1388     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1389     mkdir -p "$(dirname $2)"
1390     $cp_f "$1" "$2"
1391 }
1392
1393 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1394 # system-dependent things.
1395
1396 AVCODEC_COMPONENTS="
1397     bsfs
1398     decoders
1399     encoders
1400     hwaccels
1401     parsers
1402 "
1403
1404 AVDEVICE_COMPONENTS="
1405     indevs
1406     outdevs
1407 "
1408 AVFILTER_COMPONENTS="
1409     filters
1410 "
1411 AVFORMAT_COMPONENTS="
1412     demuxers
1413     muxers
1414     protocols
1415 "
1416
1417 AVRESAMPLE_COMPONENTS=""
1418 AVUTIL_COMPONENTS=""
1419
1420 COMPONENT_LIST="
1421     $AVCODEC_COMPONENTS
1422     $AVDEVICE_COMPONENTS
1423     $AVFILTER_COMPONENTS
1424     $AVFORMAT_COMPONENTS
1425     $AVRESAMPLE_COMPONENTS
1426     $AVUTIL_COMPONENTS
1427 "
1428
1429 EXAMPLE_LIST="
1430     avio_reading_example
1431     avio_dir_cmd_example
1432     decoding_encoding_example
1433     demuxing_decoding_example
1434     extract_mvs_example
1435     filter_audio_example
1436     filtering_audio_example
1437     filtering_video_example
1438     metadata_example
1439     muxing_example
1440     qsvdec_example
1441     remuxing_example
1442     resampling_audio_example
1443     scaling_video_example
1444     transcode_aac_example
1445     transcoding_example
1446 "
1447
1448 EXTERNAL_LIBRARY_LIST="
1449     audiotoolbox
1450     avisynth
1451     bzlib
1452     chromaprint
1453     crystalhd
1454     cuda
1455     decklink
1456     frei0r
1457     gcrypt
1458     gmp
1459     gnutls
1460     iconv
1461     jni
1462     ladspa
1463     libass
1464     libbluray
1465     libbs2b
1466     libcaca
1467     libcdio
1468     libcelt
1469     libdc1394
1470     libfaac
1471     libfdk_aac
1472     libflite
1473     libfontconfig
1474     libfreetype
1475     libfribidi
1476     libgme
1477     libgsm
1478     libiec61883
1479     libilbc
1480     libkvazaar
1481     libmfx
1482     libmodplug
1483     libmp3lame
1484     libnut
1485     libopencore_amrnb
1486     libopencore_amrwb
1487     libopencv
1488     libopenh264
1489     libopenjpeg
1490     libopus
1491     libpulse
1492     librtmp
1493     librubberband
1494     libschroedinger
1495     libshine
1496     libsmbclient
1497     libsnappy
1498     libsoxr
1499     libspeex
1500     libssh
1501     libtesseract
1502     libtheora
1503     libtwolame
1504     libutvideo
1505     libv4l2
1506     libvidstab
1507     libvo_amrwbenc
1508     libvorbis
1509     libvpx
1510     libwavpack
1511     libwebp
1512     libx264
1513     libx265
1514     libxavs
1515     libxcb
1516     libxcb_shm
1517     libxcb_shape
1518     libxcb_xfixes
1519     libxvid
1520     libzimg
1521     libzmq
1522     libzvbi
1523     lzma
1524     mediacodec
1525     mmal
1526     netcdf
1527     nvenc
1528     openal
1529     opencl
1530     opengl
1531     openssl
1532     schannel
1533     sdl
1534     securetransport
1535     videotoolbox
1536     x11grab
1537     xlib
1538     zlib
1539 "
1540
1541 DOCUMENT_LIST="
1542     doc
1543     htmlpages
1544     manpages
1545     podpages
1546     txtpages
1547 "
1548
1549 FEATURE_LIST="
1550     ftrapv
1551     gray
1552     hardcoded_tables
1553     runtime_cpudetect
1554     safe_bitstream_reader
1555     shared
1556     small
1557     static
1558     swscale_alpha
1559 "
1560
1561 HWACCEL_LIST="
1562     d3d11va
1563     dxva2
1564     vaapi
1565     vda
1566     vdpau
1567     videotoolbox_hwaccel
1568     xvmc
1569 "
1570
1571 LIBRARY_LIST="
1572     avcodec
1573     avdevice
1574     avfilter
1575     avformat
1576     avresample
1577     avutil
1578     postproc
1579     swresample
1580     swscale
1581 "
1582
1583 LICENSE_LIST="
1584     gpl
1585     nonfree
1586     version3
1587 "
1588
1589 PROGRAM_LIST="
1590     ffplay
1591     ffprobe
1592     ffserver
1593     ffmpeg
1594 "
1595
1596 SUBSYSTEM_LIST="
1597     dct
1598     dwt
1599     error_resilience
1600     faan
1601     fast_unaligned
1602     fft
1603     lsp
1604     lzo
1605     mdct
1606     pixelutils
1607     network
1608     rdft
1609 "
1610
1611 CONFIG_LIST="
1612     $COMPONENT_LIST
1613     $DOCUMENT_LIST
1614     $EXAMPLE_LIST
1615     $EXTERNAL_LIBRARY_LIST
1616     $FEATURE_LIST
1617     $HWACCEL_LIST
1618     $LICENSE_LIST
1619     $LIBRARY_LIST
1620     $PROGRAM_LIST
1621     $SUBSYSTEM_LIST
1622     fontconfig
1623     incompatible_libav_abi
1624     memalign_hack
1625     memory_poisoning
1626     neon_clobber_test
1627     pic
1628     pod2man
1629     raise_major
1630     thumb
1631     valgrind_backtrace
1632     xmm_clobber_test
1633 "
1634
1635 THREADS_LIST="
1636     pthreads
1637     os2threads
1638     w32threads
1639 "
1640
1641 ATOMICS_LIST="
1642     atomics_gcc
1643     atomics_suncc
1644     atomics_win32
1645 "
1646
1647 ARCH_LIST="
1648     aarch64
1649     alpha
1650     arm
1651     avr32
1652     avr32_ap
1653     avr32_uc
1654     bfin
1655     ia64
1656     m68k
1657     mips
1658     mips64
1659     parisc
1660     ppc
1661     ppc64
1662     s390
1663     sh4
1664     sparc
1665     sparc64
1666     tilegx
1667     tilepro
1668     tomi
1669     x86
1670     x86_32
1671     x86_64
1672 "
1673
1674 ARCH_EXT_LIST_ARM="
1675     armv5te
1676     armv6
1677     armv6t2
1678     armv8
1679     neon
1680     vfp
1681     vfpv3
1682     setend
1683 "
1684
1685 ARCH_EXT_LIST_MIPS="
1686     mipsfpu
1687     mips32r2
1688     mips32r5
1689     mips64r2
1690     mips32r6
1691     mips64r6
1692     mipsdsp
1693     mipsdspr2
1694     msa
1695 "
1696
1697 ARCH_EXT_LIST_LOONGSON="
1698     loongson2
1699     loongson3
1700     mmi
1701 "
1702
1703 ARCH_EXT_LIST_X86_SIMD="
1704     aesni
1705     amd3dnow
1706     amd3dnowext
1707     avx
1708     avx2
1709     fma3
1710     fma4
1711     mmx
1712     mmxext
1713     sse
1714     sse2
1715     sse3
1716     sse4
1717     sse42
1718     ssse3
1719     xop
1720 "
1721
1722 ARCH_EXT_LIST_PPC="
1723     altivec
1724     dcbzl
1725     ldbrx
1726     power8
1727     ppc4xx
1728     vsx
1729 "
1730
1731 ARCH_EXT_LIST_X86="
1732     $ARCH_EXT_LIST_X86_SIMD
1733     cpunop
1734     i686
1735 "
1736
1737 ARCH_EXT_LIST="
1738     $ARCH_EXT_LIST_ARM
1739     $ARCH_EXT_LIST_PPC
1740     $ARCH_EXT_LIST_X86
1741     $ARCH_EXT_LIST_MIPS
1742     $ARCH_EXT_LIST_LOONGSON
1743 "
1744
1745 ARCH_FEATURES="
1746     aligned_stack
1747     fast_64bit
1748     fast_clz
1749     fast_cmov
1750     local_aligned_8
1751     local_aligned_16
1752     local_aligned_32
1753     simd_align_16
1754 "
1755
1756 BUILTIN_LIST="
1757     atomic_cas_ptr
1758     atomic_compare_exchange
1759     machine_rw_barrier
1760     MemoryBarrier
1761     mm_empty
1762     rdtsc
1763     sarestart
1764     sem_timedwait
1765     sync_val_compare_and_swap
1766 "
1767 HAVE_LIST_CMDLINE="
1768     inline_asm
1769     symver
1770     yasm
1771 "
1772
1773 HAVE_LIST_PUB="
1774     bigendian
1775     fast_unaligned
1776     incompatible_libav_abi
1777 "
1778
1779 HEADERS_LIST="
1780     alsa_asoundlib_h
1781     altivec_h
1782     arpa_inet_h
1783     asm_types_h
1784     cdio_paranoia_h
1785     cdio_paranoia_paranoia_h
1786     dispatch_dispatch_h
1787     dev_bktr_ioctl_bt848_h
1788     dev_bktr_ioctl_meteor_h
1789     dev_ic_bt8xx_h
1790     dev_video_bktr_ioctl_bt848_h
1791     dev_video_meteor_ioctl_meteor_h
1792     direct_h
1793     dirent_h
1794     dlfcn_h
1795     d3d11_h
1796     dxva_h
1797     ES2_gl_h
1798     gsm_h
1799     io_h
1800     mach_mach_time_h
1801     machine_ioctl_bt848_h
1802     machine_ioctl_meteor_h
1803     malloc_h
1804     opencv2_core_core_c_h
1805     openjpeg_2_1_openjpeg_h
1806     openjpeg_2_0_openjpeg_h
1807     openjpeg_1_5_openjpeg_h
1808     OpenGL_gl3_h
1809     poll_h
1810     sndio_h
1811     soundcard_h
1812     sys_mman_h
1813     sys_param_h
1814     sys_resource_h
1815     sys_select_h
1816     sys_soundcard_h
1817     sys_time_h
1818     sys_un_h
1819     sys_videoio_h
1820     termios_h
1821     udplite_h
1822     unistd_h
1823     valgrind_valgrind_h
1824     windows_h
1825     winsock2_h
1826 "
1827
1828 INTRINSICS_LIST="
1829     intrinsics_neon
1830 "
1831
1832 COMPLEX_FUNCS="
1833     cabs
1834     cexp
1835 "
1836
1837 MATH_FUNCS="
1838     atanf
1839     atan2f
1840     cbrt
1841     cbrtf
1842     copysign
1843     cosf
1844     erf
1845     exp2
1846     exp2f
1847     expf
1848     hypot
1849     isfinite
1850     isinf
1851     isnan
1852     ldexpf
1853     llrint
1854     llrintf
1855     log2
1856     log2f
1857     log10f
1858     lrint
1859     lrintf
1860     powf
1861     rint
1862     round
1863     roundf
1864     sinf
1865     trunc
1866     truncf
1867 "
1868
1869 SYSTEM_FUNCS="
1870     access
1871     aligned_malloc
1872     arc4random
1873     clock_gettime
1874     closesocket
1875     CommandLineToArgvW
1876     CoTaskMemFree
1877     CryptGenRandom
1878     dlopen
1879     fcntl
1880     flt_lim
1881     fork
1882     getaddrinfo
1883     gethrtime
1884     getopt
1885     GetProcessAffinityMask
1886     GetProcessMemoryInfo
1887     GetProcessTimes
1888     getrusage
1889     GetSystemTimeAsFileTime
1890     gettimeofday
1891     glob
1892     glXGetProcAddress
1893     gmtime_r
1894     inet_aton
1895     isatty
1896     jack_port_get_latency_range
1897     kbhit
1898     localtime_r
1899     lstat
1900     lzo1x_999_compress
1901     mach_absolute_time
1902     MapViewOfFile
1903     memalign
1904     mkstemp
1905     mmap
1906     mprotect
1907     nanosleep
1908     PeekNamedPipe
1909     posix_memalign
1910     pthread_cancel
1911     sched_getaffinity
1912     SetConsoleTextAttribute
1913     SetConsoleCtrlHandler
1914     setmode
1915     setrlimit
1916     Sleep
1917     strerror_r
1918     sysconf
1919     sysctl
1920     usleep
1921     UTGetOSTypeFromString
1922     VirtualAlloc
1923     wglGetProcAddress
1924 "
1925
1926 TOOLCHAIN_FEATURES="
1927     as_dn_directive
1928     as_func
1929     as_object_arch
1930     asm_mod_q
1931     attribute_may_alias
1932     attribute_packed
1933     ebp_available
1934     ebx_available
1935     gnu_as
1936     gnu_windres
1937     ibm_asm
1938     inline_asm_direct_symbol_refs
1939     inline_asm_labels
1940     inline_asm_nonlocal_labels
1941     pragma_deprecated
1942     rsync_contimeout
1943     symver_asm_label
1944     symver_gnu_asm
1945     vfp_args
1946     xform_asm
1947     xmm_clobbers
1948 "
1949
1950 TYPES_LIST="
1951     CONDITION_VARIABLE_Ptr
1952     socklen_t
1953     struct_addrinfo
1954     struct_group_source_req
1955     struct_ip_mreq_source
1956     struct_ipv6_mreq
1957     struct_msghdr_msg_flags
1958     struct_pollfd
1959     struct_rusage_ru_maxrss
1960     struct_sctp_event_subscribe
1961     struct_sockaddr_in6
1962     struct_sockaddr_sa_len
1963     struct_sockaddr_storage
1964     struct_stat_st_mtim_tv_nsec
1965     struct_v4l2_frmivalenum_discrete
1966 "
1967
1968 HAVE_LIST="
1969     $ARCH_EXT_LIST
1970     $(add_suffix _external $ARCH_EXT_LIST)
1971     $(add_suffix _inline   $ARCH_EXT_LIST)
1972     $ARCH_FEATURES
1973     $ATOMICS_LIST
1974     $BUILTIN_LIST
1975     $COMPLEX_FUNCS
1976     $HAVE_LIST_CMDLINE
1977     $HAVE_LIST_PUB
1978     $HEADERS_LIST
1979     $INTRINSICS_LIST
1980     $MATH_FUNCS
1981     $SYSTEM_FUNCS
1982     $THREADS_LIST
1983     $TOOLCHAIN_FEATURES
1984     $TYPES_LIST
1985     atomics_native
1986     dos_paths
1987     dxva2_lib
1988     dxva2api_cobj
1989     libc_msvcrt
1990     libdc1394_1
1991     libdc1394_2
1992     makeinfo
1993     makeinfo_html
1994     perl
1995     pod2man
1996     sdl
1997     section_data_rel_ro
1998     texi2html
1999     threads
2000     vaapi_x11
2001     vdpau_x11
2002     winrt
2003     xlib
2004 "
2005
2006 # options emitted with CONFIG_ prefix but not available on the command line
2007 CONFIG_EXTRA="
2008     aandcttables
2009     ac3dsp
2010     audio_frame_queue
2011     audiodsp
2012     blockdsp
2013     bswapdsp
2014     cabac
2015     dirac_parse
2016     dvprofile
2017     exif
2018     faandct
2019     faanidct
2020     fdctdsp
2021     flacdsp
2022     fmtconvert
2023     frame_thread_encoder
2024     g722dsp
2025     golomb
2026     gplv3
2027     h263dsp
2028     h264chroma
2029     h264dsp
2030     h264pred
2031     h264qpel
2032     hpeldsp
2033     huffman
2034     huffyuvdsp
2035     huffyuvencdsp
2036     idctdsp
2037     iirfilter
2038     imdct15
2039     intrax8
2040     iso_media
2041     ividsp
2042     jpegtables
2043     lgplv3
2044     libx262
2045     llauddsp
2046     llviddsp
2047     lpc
2048     lzf
2049     me_cmp
2050     mpeg_er
2051     mpegaudio
2052     mpegaudiodsp
2053     mpegvideo
2054     mpegvideoenc
2055     mss34dsp
2056     pixblockdsp
2057     qpeldsp
2058     qsv
2059     qsvdec
2060     qsvenc
2061     rangecoder
2062     riffdec
2063     riffenc
2064     rtpdec
2065     rtpenc_chain
2066     rv34dsp
2067     sinewin
2068     snappy
2069     startcode
2070     texturedsp
2071     texturedspenc
2072     tpeldsp
2073     vc1dsp
2074     videodsp
2075     vp3dsp
2076     vp56dsp
2077     vp8dsp
2078     wma_freqs
2079     wmv2dsp
2080 "
2081
2082 CMDLINE_SELECT="
2083     $ARCH_EXT_LIST
2084     $CONFIG_LIST
2085     $HAVE_LIST_CMDLINE
2086     $THREADS_LIST
2087     asm
2088     cross_compile
2089     debug
2090     extra_warnings
2091     logging
2092     lto
2093     optimizations
2094     rpath
2095     stripping
2096 "
2097
2098 PATHS_LIST="
2099     bindir
2100     datadir
2101     docdir
2102     incdir
2103     libdir
2104     mandir
2105     pkgconfigdir
2106     prefix
2107     shlibdir
2108     install_name_dir
2109 "
2110
2111 CMDLINE_SET="
2112     $PATHS_LIST
2113     ar
2114     arch
2115     as
2116     assert_level
2117     build_suffix
2118     cc
2119     objcc
2120     cpu
2121     cross_prefix
2122     custom_allocator
2123     cxx
2124     dep_cc
2125     doxygen
2126     env
2127     extra_version
2128     gas
2129     host_cc
2130     host_cflags
2131     host_ld
2132     host_ldflags
2133     host_libs
2134     host_os
2135     install
2136     ld
2137     logfile
2138     malloc_prefix
2139     nm
2140     optflags
2141     pkg_config
2142     pkg_config_flags
2143     progs_suffix
2144     random_seed
2145     ranlib
2146     samples
2147     strip
2148     sws_max_filter_size
2149     sysinclude
2150     sysroot
2151     target_exec
2152     target_os
2153     target_path
2154     target_samples
2155     tempprefix
2156     toolchain
2157     valgrind
2158     yasmexe
2159 "
2160
2161 CMDLINE_APPEND="
2162     extra_cflags
2163     extra_cxxflags
2164     extra_objcflags
2165     host_cppflags
2166 "
2167
2168 # code dependency declarations
2169
2170 # architecture extensions
2171
2172 armv5te_deps="arm"
2173 armv6_deps="arm"
2174 armv6t2_deps="arm"
2175 armv8_deps="aarch64"
2176 neon_deps_any="aarch64 arm"
2177 intrinsics_neon_deps="neon"
2178 vfp_deps_any="aarch64 arm"
2179 vfpv3_deps="vfp"
2180 setend_deps="arm"
2181
2182 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2183
2184 mipsfpu_deps="mips"
2185 mipsdsp_deps="mips"
2186 mipsdspr2_deps="mips"
2187 mips32r2_deps="mips"
2188 mips32r5_deps="mips"
2189 mips32r6_deps="mips"
2190 mips64r2_deps="mips"
2191 mips64r6_deps="mips"
2192 msa_deps="mipsfpu"
2193 mmi_deps="mips"
2194
2195 altivec_deps="ppc"
2196 dcbzl_deps="ppc"
2197 ldbrx_deps="ppc"
2198 ppc4xx_deps="ppc"
2199 vsx_deps="altivec"
2200 power8_deps="vsx"
2201
2202 cpunop_deps="i686"
2203 x86_64_select="i686"
2204 x86_64_suggest="fast_cmov"
2205
2206 amd3dnow_deps="mmx"
2207 amd3dnowext_deps="amd3dnow"
2208 i686_deps="x86"
2209 mmx_deps="x86"
2210 mmxext_deps="mmx"
2211 sse_deps="mmxext"
2212 sse2_deps="sse"
2213 sse3_deps="sse2"
2214 ssse3_deps="sse3"
2215 sse4_deps="ssse3"
2216 sse42_deps="sse4"
2217 aesni_deps="sse42"
2218 avx_deps="sse42"
2219 xop_deps="avx"
2220 fma3_deps="avx"
2221 fma4_deps="avx"
2222 avx2_deps="avx"
2223
2224 mmx_external_deps="yasm"
2225 mmx_inline_deps="inline_asm"
2226 mmx_suggest="mmx_external mmx_inline"
2227
2228 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2229     eval dep=\$${ext}_deps
2230     eval ${ext}_external_deps='"${dep}_external"'
2231     eval ${ext}_inline_deps='"${dep}_inline"'
2232     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2233 done
2234
2235 aligned_stack_if_any="aarch64 ppc x86"
2236 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2237 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2238 fast_unaligned_if_any="aarch64 ppc x86"
2239 simd_align_16_if_any="altivec neon sse"
2240
2241 # system capabilities
2242 symver_if_any="symver_asm_label symver_gnu_asm"
2243 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2244
2245 # threading support
2246 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2247 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2248 atomics_win32_if="MemoryBarrier"
2249 atomics_native_if_any="$ATOMICS_LIST"
2250 w32threads_deps="atomics_native"
2251 threads_if_any="$THREADS_LIST"
2252
2253 # subsystems
2254 dct_select="rdft"
2255 dirac_parse_select="golomb"
2256 error_resilience_select="me_cmp"
2257 faandct_deps="faan fdctdsp"
2258 faanidct_deps="faan idctdsp"
2259 h264dsp_select="startcode"
2260 frame_thread_encoder_deps="encoders threads"
2261 intrax8_select="error_resilience"
2262 mdct_select="fft"
2263 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2264 mpeg_er_select="error_resilience"
2265 mpegaudio_select="mpegaudiodsp"
2266 mpegaudiodsp_select="dct"
2267 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2268 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2269 qsvdec_select="qsv"
2270 qsvenc_select="qsv"
2271 vc1dsp_select="h264chroma qpeldsp startcode"
2272 rdft_select="fft"
2273
2274 # decoders / encoders
2275 aac_decoder_select="imdct15 mdct sinewin"
2276 aac_fixed_decoder_select="mdct sinewin"
2277 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2278 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2279 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2280 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2281 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2283 adpcm_g722_decoder_select="g722dsp"
2284 adpcm_g722_encoder_select="g722dsp"
2285 aic_decoder_select="golomb idctdsp"
2286 alac_encoder_select="lpc"
2287 als_decoder_select="bswapdsp"
2288 amrnb_decoder_select="lsp"
2289 amrwb_decoder_select="lsp"
2290 amv_decoder_select="sp5x_decoder exif"
2291 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2292 ape_decoder_select="bswapdsp llauddsp"
2293 apng_decoder_select="zlib"
2294 apng_encoder_select="huffyuvencdsp zlib"
2295 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2296 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2297 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2298 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2299 atrac1_decoder_select="mdct sinewin"
2300 atrac3_decoder_select="mdct"
2301 atrac3p_decoder_select="mdct sinewin"
2302 avrn_decoder_select="exif jpegtables"
2303 bink_decoder_select="blockdsp hpeldsp"
2304 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2305 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2306 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2307 cllc_decoder_select="bswapdsp"
2308 comfortnoise_encoder_select="lpc"
2309 cook_decoder_select="audiodsp mdct sinewin"
2310 cscd_decoder_select="lzo"
2311 cscd_decoder_suggest="zlib"
2312 dca_decoder_select="mdct"
2313 dds_decoder_select="texturedsp"
2314 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2315 dnxhd_decoder_select="blockdsp idctdsp"
2316 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2317 dvvideo_decoder_select="dvprofile idctdsp"
2318 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2319 dxa_decoder_select="zlib"
2320 dxv_decoder_select="lzf texturedsp"
2321 eac3_decoder_select="ac3_decoder"
2322 eac3_encoder_select="ac3_encoder"
2323 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2324 eatgq_decoder_select="aandcttables"
2325 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2326 exr_decoder_select="zlib"
2327 ffv1_decoder_select="golomb rangecoder"
2328 ffv1_encoder_select="rangecoder"
2329 ffvhuff_decoder_select="huffyuv_decoder"
2330 ffvhuff_encoder_select="huffyuv_encoder"
2331 fic_decoder_select="golomb"
2332 flac_decoder_select="flacdsp golomb"
2333 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2334 flashsv2_decoder_select="zlib"
2335 flashsv2_encoder_select="zlib"
2336 flashsv_decoder_select="zlib"
2337 flashsv_encoder_select="zlib"
2338 flv_decoder_select="h263_decoder"
2339 flv_encoder_select="h263_encoder"
2340 fourxm_decoder_select="blockdsp bswapdsp"
2341 fraps_decoder_select="bswapdsp huffman"
2342 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2343 g729_decoder_select="audiodsp"
2344 h261_decoder_select="mpegvideo"
2345 h261_encoder_select="aandcttables mpegvideoenc"
2346 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2347 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2348 h263i_decoder_select="h263_decoder"
2349 h263p_decoder_select="h263_decoder"
2350 h263p_encoder_select="h263_encoder"
2351 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2352 h264_decoder_suggest="error_resilience"
2353 h264_qsv_decoder_deps="libmfx"
2354 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2355 h264_qsv_encoder_deps="libmfx"
2356 h264_qsv_encoder_select="qsvenc"
2357 hap_decoder_select="snappy texturedsp"
2358 hap_encoder_deps="libsnappy"
2359 hap_encoder_select="texturedspenc"
2360 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2361 hevc_qsv_decoder_deps="libmfx"
2362 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2363 hevc_qsv_encoder_deps="libmfx"
2364 hevc_qsv_encoder_select="qsvenc"
2365 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2366 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2367 iac_decoder_select="imc_decoder"
2368 imc_decoder_select="bswapdsp fft mdct sinewin"
2369 indeo3_decoder_select="hpeldsp"
2370 indeo4_decoder_select="ividsp"
2371 indeo5_decoder_select="ividsp"
2372 interplay_video_decoder_select="hpeldsp"
2373 jpegls_decoder_select="golomb mjpeg_decoder"
2374 jpegls_encoder_select="golomb"
2375 jv_decoder_select="blockdsp"
2376 lagarith_decoder_select="huffyuvdsp"
2377 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2378 loco_decoder_select="golomb"
2379 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2380 metasound_decoder_select="lsp mdct sinewin"
2381 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2382 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2383 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2384 mjpegb_decoder_select="mjpeg_decoder"
2385 mlp_decoder_select="mlp_parser"
2386 motionpixels_decoder_select="bswapdsp"
2387 mp1_decoder_select="mpegaudio"
2388 mp1float_decoder_select="mpegaudio"
2389 mp2_decoder_select="mpegaudio"
2390 mp2float_decoder_select="mpegaudio"
2391 mp3_decoder_select="mpegaudio"
2392 mp3adu_decoder_select="mpegaudio"
2393 mp3adufloat_decoder_select="mpegaudio"
2394 mp3float_decoder_select="mpegaudio"
2395 mp3on4_decoder_select="mpegaudio"
2396 mp3on4float_decoder_select="mpegaudio"
2397 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2398 mpc8_decoder_select="mpegaudiodsp"
2399 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2400 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2401 mpegvideo_decoder_select="mpegvideo"
2402 mpeg1video_decoder_select="mpegvideo"
2403 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2404 mpeg2video_decoder_select="mpegvideo"
2405 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2406 mpeg2_qsv_decoder_deps="libmfx"
2407 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2408 mpeg2_qsv_encoder_deps="libmfx"
2409 mpeg2_qsv_encoder_select="qsvenc"
2410 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2411 mpeg4_encoder_select="h263_encoder"
2412 msa1_decoder_select="mss34dsp"
2413 msmpeg4v1_decoder_select="h263_decoder"
2414 msmpeg4v2_decoder_select="h263_decoder"
2415 msmpeg4v2_encoder_select="h263_encoder"
2416 msmpeg4v3_decoder_select="h263_decoder"
2417 msmpeg4v3_encoder_select="h263_encoder"
2418 mss2_decoder_select="vc1_decoder mpegvideo"
2419 mts2_decoder_select="mss34dsp"
2420 mxpeg_decoder_select="mjpeg_decoder"
2421 nellymoser_decoder_select="mdct sinewin"
2422 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2423 nuv_decoder_select="idctdsp lzo"
2424 on2avc_decoder_select="mdct"
2425 opus_decoder_deps="swresample"
2426 opus_decoder_select="imdct15"
2427 png_decoder_select="zlib"
2428 png_encoder_select="huffyuvencdsp zlib"
2429 prores_decoder_select="blockdsp idctdsp"
2430 prores_encoder_select="fdctdsp"
2431 qcelp_decoder_select="lsp"
2432 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2433 ra_144_decoder_select="audiodsp"
2434 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2435 ralf_decoder_select="golomb"
2436 rawvideo_decoder_select="bswapdsp"
2437 rscc_decoder_select="zlib"
2438 rtjpeg_decoder_select="me_cmp"
2439 rv10_decoder_select="h263_decoder"
2440 rv10_encoder_select="h263_encoder"
2441 rv20_decoder_select="h263_decoder"
2442 rv20_encoder_select="h263_encoder"
2443 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2445 screenpresso_decoder_select="zlib"
2446 shorten_decoder_select="golomb"
2447 sipr_decoder_select="lsp"
2448 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2449 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2450 sonic_decoder_select="golomb rangecoder"
2451 sonic_encoder_select="golomb rangecoder"
2452 sonic_ls_encoder_select="golomb rangecoder"
2453 sp5x_decoder_select="mjpeg_decoder"
2454 svq1_decoder_select="hpeldsp"
2455 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2456 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2457 svq3_decoder_suggest="zlib"
2458 tak_decoder_select="audiodsp"
2459 tdsc_decoder_select="zlib mjpeg_decoder"
2460 theora_decoder_select="vp3_decoder"
2461 thp_decoder_select="mjpeg_decoder"
2462 tiff_decoder_suggest="zlib lzma"
2463 tiff_encoder_suggest="zlib"
2464 truehd_decoder_select="mlp_parser"
2465 truemotion2_decoder_select="bswapdsp"
2466 truespeech_decoder_select="bswapdsp"
2467 tscc_decoder_select="zlib"
2468 twinvq_decoder_select="mdct lsp sinewin"
2469 txd_decoder_select="texturedsp"
2470 utvideo_decoder_select="bswapdsp"
2471 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2472 vble_decoder_select="huffyuvdsp"
2473 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2474 vc1_qsv_decoder_deps="libmfx"
2475 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2476 vc1image_decoder_select="vc1_decoder"
2477 vorbis_decoder_select="mdct"
2478 vorbis_encoder_select="mdct"
2479 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2480 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2481 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2482 vp6a_decoder_select="vp6_decoder"
2483 vp6f_decoder_select="vp6_decoder"
2484 vp7_decoder_select="h264pred videodsp vp8dsp"
2485 vp8_decoder_select="h264pred videodsp vp8dsp"
2486 vp9_decoder_select="videodsp vp9_parser"
2487 webp_decoder_select="vp8_decoder exif"
2488 wmalossless_decoder_select="llauddsp"
2489 wmapro_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_decoder_select="mdct sinewin wma_freqs"
2491 wmav1_encoder_select="mdct sinewin wma_freqs"
2492 wmav2_decoder_select="mdct sinewin wma_freqs"
2493 wmav2_encoder_select="mdct sinewin wma_freqs"
2494 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2495 wmv1_decoder_select="h263_decoder"
2496 wmv1_encoder_select="h263_encoder"
2497 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2498 wmv2_encoder_select="h263_encoder wmv2dsp"
2499 wmv3_decoder_select="vc1_decoder"
2500 wmv3image_decoder_select="wmv3_decoder"
2501 xma1_decoder_select="wmapro_decoder"
2502 xma2_decoder_select="wmapro_decoder"
2503 zerocodec_decoder_select="zlib"
2504 zlib_decoder_select="zlib"
2505 zlib_encoder_select="zlib"
2506 zmbv_decoder_select="zlib"
2507 zmbv_encoder_select="zlib"
2508
2509 # platform codecs
2510 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2511 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2512
2513 # hardware accelerators
2514 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2515 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2516 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2517 vaapi_deps="va_va_h"
2518 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2519 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2520 vda_deps="vda_framework pthreads"
2521 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2522 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2523 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2524 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2525 xvmc_deps="X11_extensions_XvMClib_h"
2526
2527 h263_vaapi_hwaccel_deps="vaapi"
2528 h263_vaapi_hwaccel_select="h263_decoder"
2529 h263_videotoolbox_hwaccel_deps="videotoolbox"
2530 h263_videotoolbox_hwaccel_select="h263_decoder"
2531 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2532 h264_d3d11va_hwaccel_deps="d3d11va"
2533 h264_d3d11va_hwaccel_select="h264_decoder"
2534 h264_dxva2_hwaccel_deps="dxva2"
2535 h264_dxva2_hwaccel_select="h264_decoder"
2536 h264_mediacodec_decoder_deps="mediacodec"
2537 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2538 h264_mmal_decoder_deps="mmal"
2539 h264_mmal_decoder_select="mmal"
2540 h264_mmal_hwaccel_deps="mmal"
2541 h264_qsv_hwaccel_deps="libmfx"
2542 h264_vaapi_hwaccel_deps="vaapi"
2543 h264_vaapi_hwaccel_select="h264_decoder"
2544 h264_vda_decoder_deps="vda"
2545 h264_vda_decoder_select="h264_decoder"
2546 h264_vda_hwaccel_deps="vda"
2547 h264_vda_hwaccel_select="h264_decoder"
2548 h264_vda_old_hwaccel_deps="vda"
2549 h264_vda_old_hwaccel_select="h264_decoder"
2550 h264_vdpau_decoder_deps="vdpau"
2551 h264_vdpau_decoder_select="h264_decoder"
2552 h264_vdpau_hwaccel_deps="vdpau"
2553 h264_vdpau_hwaccel_select="h264_decoder"
2554 h264_videotoolbox_hwaccel_deps="videotoolbox"
2555 h264_videotoolbox_hwaccel_select="h264_decoder"
2556 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2557 hevc_d3d11va_hwaccel_select="hevc_decoder"
2558 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2559 hevc_dxva2_hwaccel_select="hevc_decoder"
2560 hevc_qsv_hwaccel_deps="libmfx"
2561 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2562 hevc_vaapi_hwaccel_select="hevc_decoder"
2563 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2564 hevc_vdpau_hwaccel_select="hevc_decoder"
2565 mpeg_vdpau_decoder_deps="vdpau"
2566 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2567 mpeg_xvmc_hwaccel_deps="xvmc"
2568 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2569 mpeg1_vdpau_decoder_deps="vdpau"
2570 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2571 mpeg1_vdpau_hwaccel_deps="vdpau"
2572 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2573 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2574 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2575 mpeg1_xvmc_hwaccel_deps="xvmc"
2576 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2577 mpeg2_crystalhd_decoder_select="crystalhd"
2578 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2579 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2580 mpeg2_dxva2_hwaccel_deps="dxva2"
2581 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2582 mpeg2_mmal_decoder_deps="mmal"
2583 mpeg2_mmal_decoder_select="mmal"
2584 mpeg2_mmal_hwaccel_deps="mmal"
2585 mpeg2_qsv_hwaccel_deps="libmfx"
2586 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2587 mpeg2_vaapi_hwaccel_deps="vaapi"
2588 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2589 mpeg2_vdpau_hwaccel_deps="vdpau"
2590 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2591 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2592 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2593 mpeg2_xvmc_hwaccel_deps="xvmc"
2594 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2595 mpeg4_crystalhd_decoder_select="crystalhd"
2596 mpeg4_mmal_decoder_deps="mmal"
2597 mpeg4_mmal_decoder_select="mmal"
2598 mpeg4_mmal_hwaccel_deps="mmal"
2599 mpeg4_vaapi_hwaccel_deps="vaapi"
2600 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2601 mpeg4_vdpau_decoder_deps="vdpau"
2602 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2603 mpeg4_vdpau_hwaccel_deps="vdpau"
2604 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2605 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2606 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2607 msmpeg4_crystalhd_decoder_select="crystalhd"
2608 vc1_crystalhd_decoder_select="crystalhd"
2609 vc1_d3d11va_hwaccel_deps="d3d11va"
2610 vc1_d3d11va_hwaccel_select="vc1_decoder"
2611 vc1_dxva2_hwaccel_deps="dxva2"
2612 vc1_dxva2_hwaccel_select="vc1_decoder"
2613 vc1_mmal_decoder_deps="mmal"
2614 vc1_mmal_decoder_select="mmal"
2615 vc1_mmal_hwaccel_deps="mmal"
2616 vc1_qsv_hwaccel_deps="libmfx"
2617 vc1_qsv_hwaccel_select="qsvdec_vc1"
2618 vc1_vaapi_hwaccel_deps="vaapi"
2619 vc1_vaapi_hwaccel_select="vc1_decoder"
2620 vc1_vdpau_decoder_deps="vdpau"
2621 vc1_vdpau_decoder_select="vc1_decoder"
2622 vc1_vdpau_hwaccel_deps="vdpau"
2623 vc1_vdpau_hwaccel_select="vc1_decoder"
2624 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2625 vp9_d3d11va_hwaccel_select="vp9_decoder"
2626 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2627 vp9_dxva2_hwaccel_select="vp9_decoder"
2628 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2629 vp9_vaapi_hwaccel_select="vp9_decoder"
2630 wmv3_crystalhd_decoder_select="crystalhd"
2631 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2632 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2633 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2634 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2635 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2636
2637 # parsers
2638 h264_parser_select="h264_decoder"
2639 hevc_parser_select="golomb"
2640 mpegvideo_parser_select="mpegvideo"
2641 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2642 vc1_parser_select="vc1dsp"
2643
2644 # bitstream_filters
2645 mjpeg2jpeg_bsf_select="jpegtables"
2646
2647 # external libraries
2648 aac_at_decoder_deps="audiotoolbox"
2649 ac3_at_decoder_deps="audiotoolbox"
2650 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2651 alac_at_decoder_deps="audiotoolbox"
2652 amr_nb_at_decoder_deps="audiotoolbox"
2653 gsm_ms_at_decoder_deps="audiotoolbox"
2654 ilbc_at_decoder_deps="audiotoolbox"
2655 mp1_at_decoder_deps="audiotoolbox"
2656 mp2_at_decoder_deps="audiotoolbox"
2657 mp3_at_decoder_deps="audiotoolbox"
2658 pcm_alaw_at_decoder_deps="audiotoolbox"
2659 pcm_mulaw_at_decoder_deps="audiotoolbox"
2660 qdmc_at_decoder_deps="audiotoolbox"
2661 qdm2_at_decoder_deps="audiotoolbox"
2662 aac_at_encoder_deps="audiotoolbox"
2663 aac_at_encoder_select="audio_frame_queue"
2664 alac_at_encoder_deps="audiotoolbox"
2665 alac_at_encoder_select="audio_frame_queue"
2666 ilbc_at_encoder_deps="audiotoolbox"
2667 ilbc_at_encoder_select="audio_frame_queue"
2668 pcm_alaw_at_encoder_deps="audiotoolbox"
2669 pcm_alaw_at_encoder_select="audio_frame_queue"
2670 pcm_mulaw_at_encoder_deps="audiotoolbox"
2671 pcm_mulaw_at_encoder_select="audio_frame_queue"
2672 chromaprint_muxer_deps="chromaprint"
2673 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2674 libcelt_decoder_deps="libcelt"
2675 libfaac_encoder_deps="libfaac"
2676 libfaac_encoder_select="audio_frame_queue"
2677 libfdk_aac_decoder_deps="libfdk_aac"
2678 libfdk_aac_encoder_deps="libfdk_aac"
2679 libfdk_aac_encoder_select="audio_frame_queue"
2680 libgme_demuxer_deps="libgme"
2681 libgsm_decoder_deps="libgsm"
2682 libgsm_encoder_deps="libgsm"
2683 libgsm_ms_decoder_deps="libgsm"
2684 libgsm_ms_encoder_deps="libgsm"
2685 libilbc_decoder_deps="libilbc"
2686 libilbc_encoder_deps="libilbc"
2687 libkvazaar_encoder_deps="libkvazaar"
2688 libmodplug_demuxer_deps="libmodplug"
2689 libmp3lame_encoder_deps="libmp3lame"
2690 libmp3lame_encoder_select="audio_frame_queue"
2691 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2692 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2693 libopencore_amrnb_encoder_select="audio_frame_queue"
2694 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2695 libopenh264_encoder_deps="libopenh264"
2696 libopenjpeg_decoder_deps="libopenjpeg"
2697 libopenjpeg_encoder_deps="libopenjpeg"
2698 libopus_decoder_deps="libopus"
2699 libopus_encoder_deps="libopus"
2700 libopus_encoder_select="audio_frame_queue"
2701 libschroedinger_decoder_deps="libschroedinger"
2702 libschroedinger_encoder_deps="libschroedinger"
2703 libshine_encoder_deps="libshine"
2704 libshine_encoder_select="audio_frame_queue"
2705 libspeex_decoder_deps="libspeex"
2706 libspeex_encoder_deps="libspeex"
2707 libspeex_encoder_select="audio_frame_queue"
2708 libtheora_encoder_deps="libtheora"
2709 libtwolame_encoder_deps="libtwolame"
2710 libutvideo_decoder_deps="libutvideo"
2711 libutvideo_encoder_deps="libutvideo"
2712 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2713 libvorbis_decoder_deps="libvorbis"
2714 libvorbis_encoder_deps="libvorbis"
2715 libvorbis_encoder_select="audio_frame_queue"
2716 libvpx_vp8_decoder_deps="libvpx"
2717 libvpx_vp8_encoder_deps="libvpx"
2718 libvpx_vp9_decoder_deps="libvpx"
2719 libvpx_vp9_encoder_deps="libvpx"
2720 libwavpack_encoder_deps="libwavpack"
2721 libwebp_encoder_deps="libwebp"
2722 libwebp_anim_encoder_deps="libwebp"
2723 libx262_encoder_deps="libx262"
2724 libx264_encoder_deps="libx264"
2725 libx264rgb_encoder_deps="libx264"
2726 libx264rgb_encoder_select="libx264_encoder"
2727 libx265_encoder_deps="libx265"
2728 libxavs_encoder_deps="libxavs"
2729 libxvid_encoder_deps="libxvid"
2730 libzvbi_teletext_decoder_deps="libzvbi"
2731 nvenc_encoder_deps="nvenc"
2732 nvenc_h264_encoder_deps="nvenc"
2733 nvenc_hevc_encoder_deps="nvenc"
2734 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2735 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2736 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2737 videotoolbox_encoder_suggest="vda_framework"
2738
2739 # demuxers / muxers
2740 ac3_demuxer_select="ac3_parser"
2741 asf_demuxer_select="riffdec"
2742 asf_o_demuxer_select="riffdec"
2743 asf_muxer_select="riffenc"
2744 asf_stream_muxer_select="asf_muxer"
2745 avi_demuxer_select="iso_media riffdec exif"
2746 avi_muxer_select="riffenc"
2747 avisynth_demuxer_deps="avisynth"
2748 avisynth_demuxer_select="riffdec"
2749 caf_demuxer_select="iso_media riffdec"
2750 dash_muxer_select="mp4_muxer"
2751 dirac_demuxer_select="dirac_parser"
2752 dts_demuxer_select="dca_parser"
2753 dtshd_demuxer_select="dca_parser"
2754 dv_demuxer_select="dvprofile"
2755 dv_muxer_select="dvprofile"
2756 dxa_demuxer_select="riffdec"
2757 eac3_demuxer_select="ac3_parser"
2758 f4v_muxer_select="mov_muxer"
2759 flac_demuxer_select="flac_parser"
2760 hds_muxer_select="flv_muxer"
2761 hls_muxer_select="mpegts_muxer"
2762 image2_alias_pix_demuxer_select="image2_demuxer"
2763 image2_brender_pix_demuxer_select="image2_demuxer"
2764 ipod_muxer_select="mov_muxer"
2765 ismv_muxer_select="mov_muxer"
2766 libnut_demuxer_deps="libnut"
2767 libnut_muxer_deps="libnut"
2768 matroska_audio_muxer_select="matroska_muxer"
2769 matroska_demuxer_select="iso_media riffdec"
2770 matroska_demuxer_suggest="bzlib lzo zlib"
2771 matroska_muxer_select="iso_media riffenc"
2772 mmf_muxer_select="riffenc"
2773 mov_demuxer_select="iso_media riffdec"
2774 mov_demuxer_suggest="zlib"
2775 mov_muxer_select="iso_media riffenc rtpenc_chain"
2776 mp3_demuxer_select="mpegaudio_parser"
2777 mp4_muxer_select="mov_muxer"
2778 mpegts_demuxer_select="iso_media"
2779 mpegts_muxer_select="adts_muxer latm_muxer"
2780 mpegtsraw_demuxer_select="mpegts_demuxer"
2781 mxf_d10_muxer_select="mxf_muxer"
2782 mxf_opatom_muxer_select="mxf_muxer"
2783 nut_muxer_select="riffenc"
2784 nuv_demuxer_select="riffdec"
2785 oga_muxer_select="ogg_muxer"
2786 ogg_demuxer_select="dirac_parse"
2787 opus_muxer_select="ogg_muxer"
2788 psp_muxer_select="mov_muxer"
2789 rtp_demuxer_select="sdp_demuxer"
2790 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2791 rtsp_demuxer_select="http_protocol rtpdec"
2792 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2793 sap_demuxer_select="sdp_demuxer"
2794 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2795 sdp_demuxer_select="rtpdec"
2796 smoothstreaming_muxer_select="ismv_muxer"
2797 spdif_muxer_select="aac_parser"
2798 spx_muxer_select="ogg_muxer"
2799 swf_demuxer_suggest="zlib"
2800 tak_demuxer_select="tak_parser"
2801 tg2_muxer_select="mov_muxer"
2802 tgp_muxer_select="mov_muxer"
2803 vobsub_demuxer_select="mpegps_demuxer"
2804 w64_demuxer_select="wav_demuxer"
2805 w64_muxer_select="wav_muxer"
2806 wav_demuxer_select="riffdec"
2807 wav_muxer_select="riffenc"
2808 webm_muxer_select="iso_media riffenc"
2809 webm_dash_manifest_demuxer_select="matroska_demuxer"
2810 wtv_demuxer_select="mpegts_demuxer riffdec"
2811 wtv_muxer_select="mpegts_muxer riffenc"
2812 xmv_demuxer_select="riffdec"
2813 xwma_demuxer_select="riffdec"
2814
2815 # indevs / outdevs
2816 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2817 alsa_outdev_deps="alsa_asoundlib_h"
2818 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2819 avfoundation_indev_select="avfoundation"
2820 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2821 caca_outdev_deps="libcaca"
2822 decklink_indev_deps="decklink pthreads"
2823 decklink_indev_extralibs="-lstdc++"
2824 decklink_outdev_deps="decklink pthreads"
2825 decklink_outdev_extralibs="-lstdc++"
2826 dshow_indev_deps="IBaseFilter"
2827 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2828 dv1394_indev_deps="dv1394"
2829 dv1394_indev_select="dv_demuxer"
2830 fbdev_indev_deps="linux_fb_h"
2831 fbdev_outdev_deps="linux_fb_h"
2832 gdigrab_indev_deps="CreateDIBSection"
2833 gdigrab_indev_extralibs="-lgdi32"
2834 gdigrab_indev_select="bmp_decoder"
2835 iec61883_indev_deps="libiec61883"
2836 jack_indev_deps="jack_jack_h"
2837 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2838 lavfi_indev_deps="avfilter"
2839 libcdio_indev_deps="libcdio"
2840 libdc1394_indev_deps="libdc1394"
2841 libv4l2_indev_deps="libv4l2"
2842 openal_indev_deps="openal"
2843 opengl_outdev_deps="opengl"
2844 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2845 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2846 pulse_indev_deps="libpulse"
2847 pulse_outdev_deps="libpulse"
2848 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2849 qtkit_indev_select="qtkit"
2850 sdl_outdev_deps="sdl"
2851 sndio_indev_deps="sndio_h"
2852 sndio_outdev_deps="sndio_h"
2853 v4l_indev_deps="linux_videodev_h"
2854 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2855 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2856 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2857 vfwcap_indev_extralibs="-lavicap32"
2858 x11grab_indev_deps="x11grab"
2859 x11grab_xcb_indev_deps="libxcb"
2860 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2861 xv_outdev_extralibs="-lXv -lX11 -lXext"
2862
2863 # protocols
2864 async_protocol_deps="threads"
2865 bluray_protocol_deps="libbluray"
2866 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2867 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2868 ffrtmpcrypt_protocol_select="tcp_protocol"
2869 ffrtmphttp_protocol_deps="!librtmp_protocol"
2870 ffrtmphttp_protocol_select="http_protocol"
2871 ftp_protocol_select="tcp_protocol"
2872 gopher_protocol_select="network"
2873 http_protocol_select="tcp_protocol"
2874 httpproxy_protocol_select="tcp_protocol"
2875 https_protocol_select="tls_protocol"
2876 icecast_protocol_select="http_protocol"
2877 librtmp_protocol_deps="librtmp"
2878 librtmpe_protocol_deps="librtmp"
2879 librtmps_protocol_deps="librtmp"
2880 librtmpt_protocol_deps="librtmp"
2881 librtmpte_protocol_deps="librtmp"
2882 libsmbclient_protocol_deps="libsmbclient gplv3"
2883 libssh_protocol_deps="libssh"
2884 mmsh_protocol_select="http_protocol"
2885 mmst_protocol_select="network"
2886 rtmp_protocol_deps="!librtmp_protocol"
2887 rtmp_protocol_select="tcp_protocol"
2888 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2889 rtmps_protocol_deps="!librtmp_protocol"
2890 rtmps_protocol_select="tls_protocol"
2891 rtmpt_protocol_select="ffrtmphttp_protocol"
2892 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2893 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2894 rtp_protocol_select="udp_protocol"
2895 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2896 sctp_protocol_select="network"
2897 srtp_protocol_select="rtp_protocol"
2898 tcp_protocol_select="network"
2899 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2900 tls_gnutls_protocol_select="tcp_protocol"
2901 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2902 tls_openssl_protocol_select="tcp_protocol"
2903 tls_schannel_protocol_deps="schannel"
2904 tls_schannel_protocol_select="tcp_protocol"
2905 tls_securetransport_protocol_deps="securetransport"
2906 tls_securetransport_protocol_select="tcp_protocol"
2907 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2908 udp_protocol_select="network"
2909 udplite_protocol_select="network"
2910 unix_protocol_deps="sys_un_h"
2911 unix_protocol_select="network"
2912
2913 # filters
2914 afftfilt_filter_deps="avcodec"
2915 afftfilt_filter_select="fft"
2916 amovie_filter_deps="avcodec avformat"
2917 aresample_filter_deps="swresample"
2918 ass_filter_deps="libass"
2919 asyncts_filter_deps="avresample"
2920 atempo_filter_deps="avcodec"
2921 atempo_filter_select="rdft"
2922 azmq_filter_deps="libzmq"
2923 blackframe_filter_deps="gpl"
2924 boxblur_filter_deps="gpl"
2925 bs2b_filter_deps="libbs2b"
2926 colormatrix_filter_deps="gpl"
2927 cover_rect_filter_deps="avcodec avformat gpl"
2928 cropdetect_filter_deps="gpl"
2929 delogo_filter_deps="gpl"
2930 deshake_filter_select="pixelutils"
2931 drawtext_filter_deps="libfreetype"
2932 ebur128_filter_deps="gpl"
2933 eq_filter_deps="gpl"
2934 fftfilt_filter_deps="avcodec"
2935 fftfilt_filter_select="rdft"
2936 find_rect_filter_deps="avcodec avformat gpl"
2937 firequalizer_filter_deps="avcodec"
2938 firequalizer_filter_select="rdft"
2939 flite_filter_deps="libflite"
2940 frei0r_filter_deps="frei0r dlopen"
2941 frei0r_src_filter_deps="frei0r dlopen"
2942 fspp_filter_deps="gpl"
2943 geq_filter_deps="gpl"
2944 histeq_filter_deps="gpl"
2945 hqdn3d_filter_deps="gpl"
2946 hwupload_cuda_filter_deps="cuda"
2947 interlace_filter_deps="gpl"
2948 kerndeint_filter_deps="gpl"
2949 ladspa_filter_deps="ladspa dlopen"
2950 mcdeint_filter_deps="avcodec gpl"
2951 movie_filter_deps="avcodec avformat"
2952 mpdecimate_filter_deps="gpl"
2953 mpdecimate_filter_select="pixelutils"
2954 mptestsrc_filter_deps="gpl"
2955 negate_filter_deps="lut_filter"
2956 nnedi_filter_deps="gpl"
2957 ocr_filter_deps="libtesseract"
2958 ocv_filter_deps="libopencv"
2959 owdenoise_filter_deps="gpl"
2960 pan_filter_deps="swresample"
2961 perspective_filter_deps="gpl"
2962 phase_filter_deps="gpl"
2963 pp7_filter_deps="gpl"
2964 pp_filter_deps="gpl postproc"
2965 pullup_filter_deps="gpl"
2966 removelogo_filter_deps="avcodec avformat swscale"
2967 repeatfields_filter_deps="gpl"
2968 resample_filter_deps="avresample"
2969 rubberband_filter_deps="librubberband"
2970 sab_filter_deps="gpl swscale"
2971 scale2ref_filter_deps="swscale"
2972 scale_filter_deps="swscale"
2973 select_filter_select="pixelutils"
2974 showcqt_filter_deps="avcodec avformat swscale"
2975 showcqt_filter_select="fft"
2976 showfreqs_filter_deps="avcodec"
2977 showfreqs_filter_select="fft"
2978 showspectrum_filter_deps="avcodec"
2979 showspectrum_filter_select="fft"
2980 showspectrumpic_filter_deps="avcodec"
2981 showspectrumpic_filter_select="fft"
2982 smartblur_filter_deps="gpl swscale"
2983 sofalizer_filter_deps="netcdf avcodec"
2984 sofalizer_filter_select="fft"
2985 spectrumsynth_filter_deps="avcodec"
2986 spectrumsynth_filter_select="fft"
2987 spp_filter_deps="gpl avcodec"
2988 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2989 stereo3d_filter_deps="gpl"
2990 subtitles_filter_deps="avformat avcodec libass"
2991 super2xsai_filter_deps="gpl"
2992 pixfmts_super2xsai_test_deps="super2xsai_filter"
2993 tinterlace_filter_deps="gpl"
2994 tinterlace_merge_test_deps="tinterlace_filter"
2995 tinterlace_pad_test_deps="tinterlace_filter"
2996 uspp_filter_deps="gpl avcodec"
2997 vidstabdetect_filter_deps="libvidstab"
2998 vidstabtransform_filter_deps="libvidstab"
2999 zmq_filter_deps="libzmq"
3000 zoompan_filter_deps="swscale"
3001 zscale_filter_deps="libzimg"
3002
3003 # examples
3004 avcodec_example_deps="avcodec avutil"
3005 avio_dir_cmd="avformat avutil"
3006 avio_reading="avformat avcodec avutil"
3007 decoding_encoding_example_deps="avcodec avformat avutil"
3008 demuxing_decoding_example_deps="avcodec avformat avutil"
3009 extract_mvs_example_deps="avcodec avformat avutil"
3010 filter_audio_example_deps="avfilter avutil"
3011 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3012 filtering_video_example_deps="avfilter avcodec avformat avutil"
3013 metadata_example_deps="avformat avutil"
3014 muxing_example_deps="avcodec avformat avutil swscale"
3015 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3016 remuxing_example_deps="avcodec avformat avutil"
3017 resampling_audio_example_deps="avutil swresample"
3018 scaling_video_example_deps="avutil swscale"
3019 transcode_aac_example_deps="avcodec avformat swresample"
3020 transcoding_example_deps="avfilter avcodec avformat avutil"
3021
3022 # libraries, in linking order
3023 avcodec_deps="avutil"
3024 avdevice_deps="avformat avcodec avutil"
3025 avfilter_deps="avutil"
3026 avformat_deps="avcodec avutil"
3027 avresample_deps="avutil"
3028 postproc_deps="avutil gpl"
3029 swresample_deps="avutil"
3030 swscale_deps="avutil"
3031
3032 # programs
3033 ffmpeg_deps="avcodec avfilter avformat swresample"
3034 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3035                null_filter
3036                setpts_filter trim_filter"
3037 ffplay_deps="avcodec avformat swscale swresample sdl"
3038 ffplay_libs='$sdl_libs'
3039 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3040 ffprobe_deps="avcodec avformat"
3041 ffserver_deps="avformat fork sarestart"
3042 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3043
3044 # documentation
3045 podpages_deps="perl"
3046 manpages_deps="perl pod2man"
3047 htmlpages_deps="perl"
3048 htmlpages_deps_any="makeinfo_html texi2html"
3049 txtpages_deps="perl makeinfo"
3050 doc_deps_any="manpages htmlpages podpages txtpages"
3051
3052 # default parameters
3053
3054 logfile="config.log"
3055
3056 # installation paths
3057 prefix_default="/usr/local"
3058 bindir_default='${prefix}/bin'
3059 datadir_default='${prefix}/share/ffmpeg'
3060 docdir_default='${prefix}/share/doc/ffmpeg'
3061 incdir_default='${prefix}/include'
3062 libdir_default='${prefix}/lib'
3063 mandir_default='${prefix}/share/man'
3064
3065 # toolchain
3066 ar_default="ar"
3067 cc_default="gcc"
3068 cxx_default="g++"
3069 host_cc_default="gcc"
3070 cp_f="cp -f"
3071 doxygen_default="doxygen"
3072 install="install"
3073 ln_s="ln -s -f"
3074 nm_default="nm -g"
3075 objformat="elf"
3076 pkg_config_default=pkg-config
3077 ranlib_default="ranlib"
3078 strip_default="strip"
3079 yasmexe_default="yasm"
3080 windres_default="windres"
3081
3082 # OS
3083 target_os_default=$(tolower $(uname -s))
3084 host_os=$target_os_default
3085
3086 # machine
3087 if test "$target_os_default" = aix; then
3088     arch_default=$(uname -p)
3089     strip_default="strip -X32_64"
3090 else
3091     arch_default=$(uname -m)
3092 fi
3093 cpu="generic"
3094 intrinsics="none"
3095
3096 # configurable options
3097 enable $PROGRAM_LIST
3098 enable $DOCUMENT_LIST
3099 enable $EXAMPLE_LIST
3100 enable $(filter_out avresample $LIBRARY_LIST)
3101 enable stripping
3102
3103 enable asm
3104 enable debug
3105 enable doc
3106 enable faan faandct faanidct
3107 enable optimizations
3108 enable runtime_cpudetect
3109 enable safe_bitstream_reader
3110 enable static
3111 enable swscale_alpha
3112 enable valgrind_backtrace
3113
3114 sws_max_filter_size_default=256
3115 set_default sws_max_filter_size
3116
3117 # Enable platform codecs by default.
3118 enable audiotoolbox
3119
3120 # Enable hwaccels by default.
3121 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3122 enable xlib
3123
3124 enable vda_framework videotoolbox videotoolbox_encoder
3125
3126 # build settings
3127 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3128 LIBPREF="lib"
3129 LIBSUF=".a"
3130 FULLNAME='$(NAME)$(BUILDSUF)'
3131 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3132 SLIBPREF="lib"
3133 SLIBSUF=".so"
3134 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3135 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3136 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3137 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3138 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3139 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3140
3141 asflags_filter=echo
3142 cflags_filter=echo
3143 ldflags_filter=echo
3144
3145 AS_C='-c'
3146 AS_O='-o $@'
3147 CC_C='-c'
3148 CC_E='-E -o $@'
3149 CC_O='-o $@'
3150 CXX_C='-c'
3151 CXX_O='-o $@'
3152 OBJCC_C='-c'
3153 OBJCC_E='-E -o $@'
3154 OBJCC_O='-o $@'
3155 LD_O='-o $@'
3156 LD_LIB='-l%'
3157 LD_PATH='-L'
3158 HOSTCC_C='-c'
3159 HOSTCC_E='-E -o $@'
3160 HOSTCC_O='-o $@'
3161 HOSTLD_O='-o $@'
3162
3163 host_libs='-lm'
3164 host_cflags_filter=echo
3165 host_ldflags_filter=echo
3166
3167 target_path='$(CURDIR)'
3168
3169 # since the object filename is not given with the -MM flag, the compiler
3170 # is only able to print the basename, and we must add the path ourselves
3171 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3172 DEPFLAGS='-MM'
3173
3174 # find source path
3175 if test -f configure; then
3176     source_path=.
3177 else
3178     source_path=$(cd $(dirname "$0"); pwd)
3179     case "$source_path" in
3180         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3181     esac
3182     test -e "$source_path/config.h" &&
3183         die "Out of tree builds are impossible with config.h in source dir."
3184 fi
3185
3186 for v in "$@"; do
3187     r=${v#*=}
3188     l=${v%"$r"}
3189     r=$(sh_quote "$r")
3190     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3191 done
3192
3193 find_things(){
3194     thing=$1
3195     pattern=$2
3196     file=$source_path/$3
3197     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3198 }
3199
3200 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3201 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3202 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3203 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3204 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3205 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3206 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3207 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3208 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3209 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3210
3211 find_things_extern(){
3212     thing=$1
3213     pattern=$2
3214     file=$source_path/$3
3215     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3216 }
3217
3218 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3219
3220 ALL_COMPONENTS="
3221     $BSF_LIST
3222     $DECODER_LIST
3223     $DEMUXER_LIST
3224     $ENCODER_LIST
3225     $FILTER_LIST
3226     $HWACCEL_LIST
3227     $INDEV_LIST
3228     $MUXER_LIST
3229     $OUTDEV_LIST
3230     $PARSER_LIST
3231     $PROTOCOL_LIST
3232 "
3233
3234 for n in $COMPONENT_LIST; do
3235     v=$(toupper ${n%s})_LIST
3236     eval enable \$$v
3237     eval ${n}_if_any="\$$v"
3238 done
3239
3240 enable $ARCH_EXT_LIST
3241
3242 die_unknown(){
3243     echo "Unknown option \"$1\"."
3244     echo "See $0 --help for available options."
3245     exit 1
3246 }
3247
3248 print_in_columns() {
3249     cols=$(expr $ncols / 24)
3250     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3251 }
3252
3253 show_list() {
3254     suffix=_$1
3255     shift
3256     echo $* | sed s/$suffix//g | print_in_columns
3257     exit 0
3258 }
3259
3260 rand_list(){
3261     IFS=', '
3262     set -- $*
3263     unset IFS
3264     for thing; do
3265         comp=${thing%:*}
3266         prob=${thing#$comp}
3267         prob=${prob#:}
3268         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3269         echo "prob ${prob:-0.5}"
3270         printf '%s\n' $comp
3271     done
3272 }
3273
3274 do_random(){
3275     action=$1
3276     shift
3277     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3278     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3279 }
3280
3281 for opt do
3282     optval="${opt#*=}"
3283     case "$opt" in
3284         --extra-ldflags=*)
3285             add_ldflags $optval
3286         ;;
3287         --extra-ldexeflags=*)
3288             add_ldexeflags $optval
3289         ;;
3290         --extra-ldlibflags=*)
3291             add_ldlibflags $optval
3292         ;;
3293         --extra-libs=*)
3294             add_extralibs $optval
3295         ;;
3296         --disable-devices)
3297             disable $INDEV_LIST $OUTDEV_LIST
3298         ;;
3299         --enable-debug=*)
3300             debuglevel="$optval"
3301         ;;
3302         --disable-programs)
3303             disable $PROGRAM_LIST
3304         ;;
3305         --disable-everything)
3306             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3307         ;;
3308         --disable-all)
3309             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3310             disable $LIBRARY_LIST $PROGRAM_LIST doc
3311             enable avutil
3312         ;;
3313         --enable-random|--disable-random)
3314             action=${opt%%-random}
3315             do_random ${action#--} $COMPONENT_LIST
3316         ;;
3317         --enable-random=*|--disable-random=*)
3318             action=${opt%%-random=*}
3319             do_random ${action#--} $optval
3320         ;;
3321         --enable-*=*|--disable-*=*)
3322             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3323             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3324             eval list=\$$(toupper $thing)_LIST
3325             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3326             list=$(filter "$name" $list)
3327             [ "$list" = "" ] && warn "Option $opt did not match anything"
3328             $action $list
3329         ;;
3330         --enable-?*|--disable-?*)
3331             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3332             if is_in $option $COMPONENT_LIST; then
3333                 test $action = disable && action=unset
3334                 eval $action \$$(toupper ${option%s})_LIST
3335             elif is_in $option $CMDLINE_SELECT; then
3336                 $action $option
3337             else
3338                 die_unknown $opt
3339             fi
3340         ;;
3341         --list-*)
3342             NAME="${opt#--list-}"
3343             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3344             NAME=${NAME%s}
3345             eval show_list $NAME \$$(toupper $NAME)_LIST
3346         ;;
3347         --help|-h) show_help
3348         ;;
3349         --fatal-warnings) enable fatal_warnings
3350         ;;
3351         *)
3352             optname="${opt%%=*}"
3353             optname="${optname#--}"
3354             optname=$(echo "$optname" | sed 's/-/_/g')
3355             if is_in $optname $CMDLINE_SET; then
3356                 eval $optname='$optval'
3357             elif is_in $optname $CMDLINE_APPEND; then
3358                 append $optname "$optval"
3359             else
3360                 die_unknown $opt
3361             fi
3362         ;;
3363     esac
3364 done
3365
3366 for e in $env; do
3367     eval "export $e"
3368 done
3369
3370 disabled logging && logfile=/dev/null
3371
3372 # Disable all the library-specific components if the library itself
3373 # is disabled, see AVCODEC_LIST and following _LIST variables.
3374
3375 disable_components(){
3376     disabled ${1} && disable $(
3377         eval components="\$$(toupper ${1})_COMPONENTS"
3378         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3379     )
3380 }
3381
3382 map 'disable_components $v' $LIBRARY_LIST
3383
3384 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3385 set >> $logfile
3386
3387 test -n "$valgrind" && toolchain="valgrind-memcheck"
3388
3389 case "$toolchain" in
3390     *-asan)
3391         cc_default="${toolchain%-asan}"
3392         add_cflags  -fsanitize=address
3393         add_ldflags -fsanitize=address
3394     ;;
3395     *-tsan)
3396         cc_default="${toolchain%-tsan}"
3397         add_cflags  -fsanitize=thread -pie
3398         add_ldflags -fsanitize=thread -pie
3399         case "$toolchain" in
3400             gcc-tsan)
3401                 add_cflags  -fPIC
3402                 add_ldflags -fPIC
3403                 ;;
3404         esac
3405     ;;
3406     *-usan)
3407         cc_default="${toolchain%-usan}"
3408         add_cflags  -fsanitize=undefined
3409         add_ldflags -fsanitize=undefined
3410     ;;
3411     valgrind-*)
3412         target_exec_default="valgrind"
3413         case "$toolchain" in
3414             valgrind-massif)
3415                 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"
3416                 ;;
3417             valgrind-memcheck)
3418                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3419                 ;;
3420         esac
3421     ;;
3422     msvc)
3423         # Check whether the current MSVC version needs the C99 converter.
3424         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3425         # support enough of C99 to build ffmpeg. Default to the new
3426         # behaviour if the regexp was unable to match anything, since this
3427         # successfully parses the version number of existing supported
3428         # versions that require the converter (MSVC 2010 and 2012).
3429         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3430         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3431             cc_default="cl"
3432         else
3433             cc_default="c99wrap cl"
3434         fi
3435         ld_default="$source_path/compat/windows/mslink"
3436         nm_default="dumpbin -symbols"
3437         ar_default="lib"
3438         case "$arch" in
3439         arm*)
3440             as_default="armasm"
3441             ;;
3442         esac
3443         target_os_default="win32"
3444         # Use a relative path for TMPDIR. This makes sure all the
3445         # ffconf temp files are written with a relative path, avoiding
3446         # issues with msys/win32 path conversion for MSVC parameters
3447         # such as -Fo<file> or -out:<file>.
3448         TMPDIR=.
3449     ;;
3450     icl)
3451         cc_default="icl"
3452         ld_default="xilink"
3453         nm_default="dumpbin -symbols"
3454         ar_default="xilib"
3455         target_os_default="win32"
3456         TMPDIR=.
3457     ;;
3458     gcov)
3459         add_cflags  -fprofile-arcs -ftest-coverage
3460         add_ldflags -fprofile-arcs -ftest-coverage
3461     ;;
3462     hardened)
3463         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3464         add_cflags   -fno-strict-overflow -fstack-protector-all
3465         add_ldflags  -Wl,-z,relro -Wl,-z,now
3466     ;;
3467     ?*)
3468         die "Unknown toolchain $toolchain"
3469     ;;
3470 esac
3471
3472 test -n "$cross_prefix" && enable cross_compile
3473
3474 if enabled cross_compile; then
3475     test -n "$arch" && test -n "$target_os" ||
3476         die "Must specify target arch and OS when cross-compiling"
3477 fi
3478
3479 ar_default="${cross_prefix}${ar_default}"
3480 cc_default="${cross_prefix}${cc_default}"
3481 cxx_default="${cross_prefix}${cxx_default}"
3482 nm_default="${cross_prefix}${nm_default}"
3483 pkg_config_default="${cross_prefix}${pkg_config_default}"
3484 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3485     ranlib_default="${cross_prefix}${ranlib_default} -D"
3486 else
3487     ranlib_default="${cross_prefix}${ranlib_default}"
3488 fi
3489 strip_default="${cross_prefix}${strip_default}"
3490 windres_default="${cross_prefix}${windres_default}"
3491
3492 sysinclude_default="${sysroot}/usr/include"
3493
3494 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3495     target_exec target_os yasmexe
3496 enabled cross_compile || host_cc_default=$cc
3497 set_default host_cc
3498
3499 pkg_config_fail_message=""
3500 if ! $pkg_config --version >/dev/null 2>&1; then
3501     warn "$pkg_config not found, library detection may fail."
3502     pkg_config=false
3503 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3504     pkg_config_fail_message="
3505 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3506 fi
3507
3508 if test $doxygen != $doxygen_default && \
3509   ! $doxygen --version >/dev/null 2>&1; then
3510     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3511 fi
3512
3513 exesuf() {
3514     case $1 in
3515         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3516     esac
3517 }
3518
3519 EXESUF=$(exesuf $target_os)
3520 HOSTEXESUF=$(exesuf $host_os)
3521
3522 # set temporary file name
3523 : ${TMPDIR:=$TEMPDIR}
3524 : ${TMPDIR:=$TMP}
3525 : ${TMPDIR:=/tmp}
3526
3527 if [ -n "$tempprefix" ] ; then
3528     mktemp(){
3529         echo $tempprefix.${HOSTNAME}.${UID}
3530     }
3531 elif ! check_cmd mktemp -u XXXXXX; then
3532     # simple replacement for missing mktemp
3533     # NOT SAFE FOR GENERAL USE
3534     mktemp(){
3535         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3536     }
3537 fi
3538
3539 tmpfile(){
3540     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3541         (set -C; exec > $tmp) 2>/dev/null ||
3542         die "Unable to create temporary file in $TMPDIR."
3543     append TMPFILES $tmp
3544     eval $1=$tmp
3545 }
3546
3547 trap 'rm -f -- $TMPFILES' EXIT
3548
3549 tmpfile TMPASM .asm
3550 tmpfile TMPC   .c
3551 tmpfile TMPCPP .cpp
3552 tmpfile TMPE   $EXESUF
3553 tmpfile TMPH   .h
3554 tmpfile TMPM   .m
3555 tmpfile TMPO   .o
3556 tmpfile TMPS   .S
3557 tmpfile TMPSH  .sh
3558 tmpfile TMPV   .ver
3559
3560 unset -f mktemp
3561
3562 chmod +x $TMPE
3563
3564 # make sure we can execute files in $TMPDIR
3565 cat > $TMPSH 2>> $logfile <<EOF
3566 #! /bin/sh
3567 EOF
3568 chmod +x $TMPSH >> $logfile 2>&1
3569 if ! $TMPSH >> $logfile 2>&1; then
3570     cat <<EOF
3571 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3572 variable to another directory and make sure that it is not mounted noexec.
3573 EOF
3574     die "Sanity test failed."
3575 fi
3576
3577 armasm_flags(){
3578     for flag; do
3579         case $flag in
3580             # Filter out MSVC cl.exe options from cflags that shouldn't
3581             # be passed to gas-preprocessor
3582             -M[TD]*)                                            ;;
3583             *)                  echo $flag                      ;;
3584         esac
3585    done
3586 }
3587
3588 ccc_flags(){
3589     for flag; do
3590         case $flag in
3591             -std=c99)           echo -c99                       ;;
3592             -mcpu=*)            echo -arch ${flag#*=}           ;;
3593             -mieee)             echo -ieee                      ;;
3594             -O*|-fast)          echo $flag                      ;;
3595             -fno-math-errno)    echo -assume nomath_errno       ;;
3596             -g)                 echo -g3                        ;;
3597             -Wall)              echo -msg_enable level2         ;;
3598             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3599             -Wl,*)              echo $flag                      ;;
3600             -f*|-W*)                                            ;;
3601             *)                  echo $flag                      ;;
3602         esac
3603    done
3604 }
3605
3606 cparser_flags(){
3607     for flag; do
3608         case $flag in
3609             -Wno-switch)             echo -Wno-switch-enum ;;
3610             -Wno-format-zero-length) ;;
3611             -Wdisabled-optimization) ;;
3612             -Wno-pointer-sign)       echo -Wno-other ;;
3613             *)                       echo $flag ;;
3614         esac
3615     done
3616 }
3617
3618 msvc_common_flags(){
3619     for flag; do
3620         case $flag in
3621             # In addition to specifying certain flags under the compiler
3622             # specific filters, they must be specified here as well or else the
3623             # generic catch all at the bottom will print the original flag.
3624             -Wall)                ;;
3625             -std=c99)             ;;
3626             # Common flags
3627             -fomit-frame-pointer) ;;
3628             -g)                   echo -Z7 ;;
3629             -fno-math-errno)      ;;
3630             -fno-common)          ;;
3631             -fno-signed-zeros)    ;;
3632             -fPIC)                ;;
3633             -mthumb)              ;;
3634             -march=*)             ;;
3635             -lz)                  echo zlib.lib ;;
3636             -lavifil32)           echo vfw32.lib ;;
3637             -lavicap32)           echo vfw32.lib user32.lib ;;
3638             -lx264)               echo libx264.lib ;;
3639             -l*)                  echo ${flag#-l}.lib ;;
3640             -LARGEADDRESSAWARE)   echo $flag ;;
3641             -L*)                  echo -libpath:${flag#-L} ;;
3642             *)                    echo $flag ;;
3643         esac
3644     done
3645 }
3646
3647 msvc_flags(){
3648     msvc_common_flags "$@"
3649     for flag; do
3650         case $flag in
3651             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3652                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3653                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3654                                        -wd4307 \
3655                                        -wd4273 -wd4554 -wd4701 ;;
3656         esac
3657     done
3658 }
3659
3660 icl_flags(){
3661     msvc_common_flags "$@"
3662     for flag; do
3663         case $flag in
3664             # Despite what Intel's documentation says -Wall, which is supported
3665             # on Windows, does enable remarks so disable them here.
3666             -Wall)                echo $flag -Qdiag-disable:remark ;;
3667             -std=c99)             echo -Qstd=c99 ;;
3668             -flto)                echo -ipo ;;
3669         esac
3670     done
3671 }
3672
3673 icc_flags(){
3674     for flag; do
3675         case $flag in
3676             -flto)                echo -ipo ;;
3677             *)                    echo $flag ;;
3678         esac
3679     done
3680 }
3681
3682 pgi_flags(){
3683     for flag; do
3684         case $flag in
3685             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3686             -fomit-frame-pointer) echo -Mnoframe ;;
3687             -g)                   echo -gopt ;;
3688             *)                    echo $flag ;;
3689         esac
3690     done
3691 }
3692
3693 suncc_flags(){
3694     for flag; do
3695         case $flag in
3696             -march=*|-mcpu=*)
3697                 case "${flag#*=}" in
3698                     native)                   echo -xtarget=native       ;;
3699                     v9|niagara)               echo -xarch=sparc          ;;
3700                     ultrasparc)               echo -xarch=sparcvis       ;;
3701                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3702                     i586|pentium)             echo -xchip=pentium        ;;
3703                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3704                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3705                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3706                     pentium4*)          echo -xtarget=pentium4           ;;
3707                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3708                     *-sse3)             echo -xarch=sse3                 ;;
3709                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3710                     bonnell)                   echo -xarch=ssse3         ;;
3711                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3712                     westmere)                  echo -xtarget=westmere    ;;
3713                     silvermont)                echo -xarch=sse4_2        ;;
3714                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3715                     core-avx*|ivybridge|haswell|broadwell)
3716                                                echo -xarch=avx           ;;
3717                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3718                     btver1)                    echo -xarch=amdsse4a      ;;
3719                     btver2|bdver*)             echo -xarch=avx           ;;
3720                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3721                     k8|opteron|athlon64|athlon-fx)
3722                                                echo -xarch=sse2a         ;;
3723                     athlon*)                   echo -xarch=pentium_proa  ;;
3724                 esac
3725                 ;;
3726             -std=c99)             echo -xc99              ;;
3727             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3728             -fPIC)                echo -KPIC -xcode=pic32 ;;
3729             -W*,*)                echo $flag              ;;
3730             -f*-*|-W*|-mimpure-text)                      ;;
3731             -shared)              echo -G                 ;;
3732             *)                    echo $flag              ;;
3733         esac
3734     done
3735 }
3736
3737 tms470_flags(){
3738     for flag; do
3739         case $flag in
3740             -march=*|-mcpu=*)
3741                 case "${flag#*=}" in
3742                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3743                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3744                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3745                     armv6*|arm11*)          echo -mv=6   ;;
3746                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3747                                             echo -mv=5e  ;;
3748                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3749                 esac
3750                 ;;
3751             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3752             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3753             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3754             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3755             -msoft-float)   echo --float_support=vfplib       ;;
3756             -O[0-3]|-mf=*)  echo $flag                        ;;
3757             -g)             echo -g -mn                       ;;
3758             -pds=*)         echo $flag                        ;;
3759             -D*|-I*)        echo $flag                        ;;
3760             --gcc|--abi=*)  echo $flag                        ;;
3761             -me)            echo $flag                        ;;
3762         esac
3763     done
3764 }
3765
3766 probe_cc(){
3767     pfx=$1
3768     _cc=$2
3769     first=$3
3770
3771     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3772     unset _ld_o _ldflags _ld_lib _ld_path
3773     unset _depflags _DEPCMD _DEPFLAGS
3774     _flags_filter=echo
3775
3776     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3777         true # no-op to avoid reading stdin in following checks
3778     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3779         _type=llvm_gcc
3780         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3781         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3782         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3783         _cflags_speed='-O3'
3784         _cflags_size='-Os'
3785     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3786         _type=gcc
3787         gcc_version=$($_cc --version | head -n1)
3788         gcc_basever=$($_cc -dumpversion)
3789         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3790         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3791         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3792         case $gcc_basever in
3793             2) ;;
3794             2.*) ;;
3795             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3796         esac
3797         if [ "$first" = true ]; then
3798             case $gcc_basever in
3799                 4.2*)
3800                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3801             esac
3802         fi
3803         _cflags_speed='-O3'
3804         _cflags_size='-Os'
3805     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3806         _type=icc
3807         _ident=$($_cc --version | head -n1)
3808         _depflags='-MMD'
3809         _cflags_speed='-O3'
3810         _cflags_size='-Os'
3811         _cflags_noopt='-O1'
3812         _flags_filter=icc_flags
3813     elif $_cc -v 2>&1 | grep -q xlc; then
3814         _type=xlc
3815         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3816         _cflags_speed='-O5'
3817         _cflags_size='-O5 -qcompact'
3818     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3819         _type=ccc
3820         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3821         _DEPFLAGS='-M'
3822         _cflags_speed='-fast'
3823         _cflags_size='-O1'
3824         _flags_filter=ccc_flags
3825     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3826         test -d "$sysroot" || die "No valid sysroot specified."
3827         _type=armcc
3828         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3829         armcc_conf="$PWD/armcc.conf"
3830         $_cc --arm_linux_configure                 \
3831              --arm_linux_config_file="$armcc_conf" \
3832              --configure_sysroot="$sysroot"        \
3833              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3834              die "Error creating armcc configuration file."
3835         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3836         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3837         as_default="${cross_prefix}gcc"
3838         _depflags='-MMD'
3839         _cflags_speed='-O3'
3840         _cflags_size='-Os'
3841     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3842         _type=tms470
3843         _ident=$($_cc -version | head -n1 | tr -s ' ')
3844         _flags='--gcc --abi=eabi -me'
3845         _cc_e='-ppl -fe=$@'
3846         _cc_o='-fe=$@'
3847         _depflags='-ppa -ppd=$(@:.o=.d)'
3848         _cflags_speed='-O3 -mf=5'
3849         _cflags_size='-O3 -mf=2'
3850         _flags_filter=tms470_flags
3851     elif $_cc -v 2>&1 | grep -q clang; then
3852         _type=clang
3853         _ident=$($_cc --version 2>/dev/null | head -n1)
3854         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3855         _cflags_speed='-O3'
3856         _cflags_size='-Os'
3857     elif $_cc -V 2>&1 | grep -q Sun; then
3858         _type=suncc
3859         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3860         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3861         _DEPFLAGS='-xM1 -xc99'
3862         _ldflags='-std=c99'
3863         _cflags_speed='-O5'
3864         _cflags_size='-O5 -xspace'
3865         _flags_filter=suncc_flags
3866     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3867         _type=pathscale
3868         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3869         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3870         _cflags_speed='-O2'
3871         _cflags_size='-Os'
3872         _flags_filter='filter_out -Wdisabled-optimization'
3873     elif $_cc -v 2>&1 | grep -q Open64; then
3874         _type=open64
3875         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3876         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3877         _cflags_speed='-O2'
3878         _cflags_size='-Os'
3879         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3880     elif $_cc -V 2>&1 | grep -q Portland; then
3881         _type=pgi
3882         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3883         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3884         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3885         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3886         _cflags_noopt="-O"
3887         _flags_filter=pgi_flags
3888     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3889         _type=armasm
3890         _ident=$($_cc | head -n1)
3891         # 4509: "This form of conditional instruction is deprecated"
3892         _flags="-nologo -ignore 4509"
3893         _flags_filter=armasm_flags
3894     elif $_cc 2>&1 | grep -q Intel; then
3895         _type=icl
3896         _ident=$($_cc 2>&1 | head -n1)
3897         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3898         # Not only is O3 broken on 13.x+ but it is slower on all previous
3899         # versions (tested) as well.
3900         _cflags_speed="-O2"
3901         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3902         if $_cc 2>&1 | grep -q Linker; then
3903             _ld_o='-out:$@'
3904         else
3905             _ld_o='-Fe$@'
3906         fi
3907         _cc_o='-Fo$@'
3908         _cc_e='-P'
3909         _flags_filter=icl_flags
3910         _ld_lib='lib%.a'
3911         _ld_path='-libpath:'
3912         # -Qdiag-error to make icl error when seeing certain unknown arguments
3913         _flags='-nologo -Qdiag-error:4044,10157'
3914         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3915         # with MSVC which enables it by default.
3916         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3917         disable stripping
3918     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3919         _type=msvc
3920         _ident=$($_cc 2>&1 | head -n1)
3921         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3922         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3923         _cflags_speed="-O2"
3924         _cflags_size="-O1"
3925         if $_cc -nologo- 2>&1 | grep -q Linker; then
3926             _ld_o='-out:$@'
3927         else
3928             _ld_o='-Fe$@'
3929         fi
3930         _cc_o='-Fo$@'
3931         _cc_e='-P -Fi$@'
3932         _flags_filter=msvc_flags
3933         _ld_lib='lib%.a'
3934         _ld_path='-libpath:'
3935         _flags='-nologo'
3936         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3937         disable stripping
3938     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3939         _type=cparser
3940         _ident=$($_cc --version | head -n1)
3941         _depflags='-MMD'
3942         _cflags_speed='-O4'
3943         _cflags_size='-O2'
3944         _flags_filter=cparser_flags
3945     fi
3946
3947     eval ${pfx}_type=\$_type
3948     eval ${pfx}_ident=\$_ident
3949 }
3950
3951 set_ccvars(){
3952     eval ${1}_C=\${_cc_c-\${${1}_C}}
3953     eval ${1}_E=\${_cc_e-\${${1}_E}}
3954     eval ${1}_O=\${_cc_o-\${${1}_O}}
3955
3956     if [ -n "$_depflags" ]; then
3957         eval ${1}_DEPFLAGS=\$_depflags
3958     else
3959         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3960         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3961         eval DEP${1}FLAGS=\$_flags
3962     fi
3963 }
3964
3965 probe_cc cc "$cc" "true"
3966 cflags_filter=$_flags_filter
3967 cflags_speed=$_cflags_speed
3968 cflags_size=$_cflags_size
3969 cflags_noopt=$_cflags_noopt
3970 add_cflags $_flags $_cflags
3971 cc_ldflags=$_ldflags
3972 set_ccvars CC
3973
3974 probe_cc hostcc "$host_cc"
3975 host_cflags_filter=$_flags_filter
3976 add_host_cflags  $_flags $_cflags
3977 set_ccvars HOSTCC
3978
3979 test -n "$cc_type" && enable $cc_type ||
3980     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3981
3982 : ${as_default:=$cc}
3983 : ${objcc_default:=$cc}
3984 : ${dep_cc_default:=$cc}
3985 : ${ld_default:=$cc}
3986 : ${host_ld_default:=$host_cc}
3987 set_default ar as objcc dep_cc ld host_ld windres
3988
3989 probe_cc as "$as"
3990 asflags_filter=$_flags_filter
3991 add_asflags $_flags $_cflags
3992 set_ccvars AS
3993
3994 probe_cc objcc "$objcc"
3995 objcflags_filter=$_flags_filter
3996 add_objcflags $_flags $_cflags
3997 set_ccvars OBJC
3998
3999 probe_cc ld "$ld"
4000 ldflags_filter=$_flags_filter
4001 add_ldflags $_flags $_ldflags
4002 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4003 LD_O=${_ld_o-$LD_O}
4004 LD_LIB=${_ld_lib-$LD_LIB}
4005 LD_PATH=${_ld_path-$LD_PATH}
4006
4007 probe_cc hostld "$host_ld"
4008 host_ldflags_filter=$_flags_filter
4009 add_host_ldflags $_flags $_ldflags
4010 HOSTLD_O=${_ld_o-$HOSTLD_O}
4011
4012 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4013     probe_cc depcc "$dep_cc"
4014     CCDEP=${_DEPCMD:-$DEPCMD}
4015     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4016     DEPCCFLAGS=$_flags
4017 fi
4018
4019 if $ar 2>&1 | grep -q Microsoft; then
4020     arflags="-nologo"
4021     ar_o='-out:$@'
4022 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4023     arflags="rq"
4024     ar_o='$@'
4025 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4026     arflags='-Xany -r -c'
4027     ar_o='$@'
4028 elif $ar 2>&1 | grep -q "\[D\] "; then
4029     arflags="rcD"
4030     ar_o='$@'
4031 else
4032     arflags="rc"
4033     ar_o='$@'
4034 fi
4035
4036 add_cflags $extra_cflags
4037 add_cxxflags $extra_cxxflags
4038 add_objcflags $extra_objcflags
4039 add_asflags $extra_cflags
4040
4041 if test -n "$sysroot"; then
4042     case "$cc_type" in
4043         gcc|llvm_gcc|clang)
4044             add_cppflags --sysroot="$sysroot"
4045             add_ldflags --sysroot="$sysroot"
4046 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4047             add_cppflags -isysroot "$sysroot"
4048             add_ldflags -isysroot "$sysroot"
4049         ;;
4050         tms470)
4051             add_cppflags -I"$sysinclude"
4052             add_ldflags  --sysroot="$sysroot"
4053         ;;
4054     esac
4055 fi
4056
4057 if test "$cpu" = host; then
4058     enabled cross_compile &&
4059         die "--cpu=host makes no sense when cross-compiling."
4060
4061     case "$cc_type" in
4062         gcc|llvm_gcc)
4063             check_native(){
4064                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4065                 sed -n "/cc1.*$1=/{
4066                             s/.*$1=\\([^ ]*\\).*/\\1/
4067                             p
4068                             q
4069                         }" $TMPE
4070             }
4071             cpu=$(check_native -march || check_native -mcpu)
4072         ;;
4073         clang)
4074             check_native(){
4075                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4076                 sed -n "/cc1.*-target-cpu /{
4077                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4078                             p
4079                             q
4080                         }" $TMPE
4081             }
4082             cpu=$(check_native -march)
4083         ;;
4084     esac
4085
4086     test "${cpu:-host}" = host &&
4087         die "--cpu=host not supported with compiler $cc"
4088 fi
4089
4090 # Deal with common $arch aliases
4091 case "$arch" in
4092     aarch64|arm64)
4093         arch="aarch64"
4094     ;;
4095     arm*|iPad*|iPhone*)
4096         arch="arm"
4097     ;;
4098     mips*|IP*)
4099         case "$arch" in
4100         *el)
4101             add_cppflags -EL
4102             add_ldflags -EL
4103         ;;
4104         *eb)
4105             add_cppflags -EB
4106             add_ldflags -EB
4107         ;;
4108         esac
4109         arch="mips"
4110     ;;
4111     parisc*|hppa*)
4112         arch="parisc"
4113     ;;
4114     "Power Macintosh"|ppc*|powerpc*)
4115         arch="ppc"
4116     ;;
4117     s390|s390x)
4118         arch="s390"
4119     ;;
4120     sh4|sh)
4121         arch="sh4"
4122     ;;
4123     sun4u|sparc*)
4124         arch="sparc"
4125     ;;
4126     tilegx|tile-gx)
4127         arch="tilegx"
4128     ;;
4129     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4130         arch="x86"
4131     ;;
4132 esac
4133
4134 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4135 enable $arch
4136
4137 # Add processor-specific flags
4138 if enabled aarch64; then
4139
4140     case $cpu in
4141         armv*)
4142             cpuflags="-march=$cpu"
4143         ;;
4144         *)
4145             cpuflags="-mcpu=$cpu"
4146         ;;
4147     esac
4148
4149 elif enabled alpha; then
4150
4151     cpuflags="-mcpu=$cpu"
4152
4153 elif enabled arm; then
4154
4155     check_arm_arch() {
4156         check_cpp_condition stddef.h \
4157             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4158             $cpuflags
4159     }
4160
4161     probe_arm_arch() {
4162         if   check_arm_arch 4;        then echo armv4;
4163         elif check_arm_arch 4T;       then echo armv4t;
4164         elif check_arm_arch 5;        then echo armv5;
4165         elif check_arm_arch 5E;       then echo armv5e;
4166         elif check_arm_arch 5T;       then echo armv5t;
4167         elif check_arm_arch 5TE;      then echo armv5te;
4168         elif check_arm_arch 5TEJ;     then echo armv5te;
4169         elif check_arm_arch 6;        then echo armv6;
4170         elif check_arm_arch 6J;       then echo armv6j;
4171         elif check_arm_arch 6K;       then echo armv6k;
4172         elif check_arm_arch 6Z;       then echo armv6z;
4173         elif check_arm_arch 6ZK;      then echo armv6zk;
4174         elif check_arm_arch 6T2;      then echo armv6t2;
4175         elif check_arm_arch 7;        then echo armv7;
4176         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4177         elif check_arm_arch 7S;       then echo armv7-a;
4178         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4179         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4180         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4181         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4182         fi
4183     }
4184
4185     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4186
4187     case $cpu in
4188         armv*)
4189             cpuflags="-march=$cpu"
4190             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4191         ;;
4192         *)
4193             cpuflags="-mcpu=$cpu"
4194             case $cpu in
4195                 cortex-a*)                               subarch=armv7a  ;;
4196                 cortex-r*)                               subarch=armv7r  ;;
4197                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4198                 arm11*)                                  subarch=armv6   ;;
4199                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4200                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4201                 *)                             subarch=$(probe_arm_arch) ;;
4202             esac
4203         ;;
4204     esac
4205
4206     case "$subarch" in
4207         armv5t*)    enable fast_clz                ;;
4208         armv[6-8]*)
4209             enable fast_clz
4210             disabled fast_unaligned || enable fast_unaligned
4211             ;;
4212     esac
4213
4214 elif enabled avr32; then
4215
4216     case $cpu in
4217         ap7[02]0[0-2])
4218             subarch="avr32_ap"
4219             cpuflags="-mpart=$cpu"
4220         ;;
4221         ap)
4222             subarch="avr32_ap"
4223             cpuflags="-march=$cpu"
4224         ;;
4225         uc3[ab]*)
4226             subarch="avr32_uc"
4227             cpuflags="-mcpu=$cpu"
4228         ;;
4229         uc)
4230             subarch="avr32_uc"
4231             cpuflags="-march=$cpu"
4232         ;;
4233     esac
4234
4235 elif enabled bfin; then
4236
4237     cpuflags="-mcpu=$cpu"
4238
4239 elif enabled mips; then
4240
4241     cpuflags="-march=$cpu"
4242
4243     if [ "$cpu" != "generic" ]; then
4244         disable mips32r2
4245         disable mips32r5
4246         disable mips64r2
4247         disable mips32r6
4248         disable mips64r6
4249         disable loongson2
4250         disable loongson3
4251
4252         case $cpu in
4253             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4254                 enable mips32r2
4255                 disable msa
4256             ;;
4257             p5600|i6400)
4258                 disable mipsdsp
4259                 disable mipsdspr2
4260             ;;
4261             loongson*)
4262                 enable loongson2
4263                 enable loongson3
4264                 enable local_aligned_8 local_aligned_16 local_aligned_32
4265                 enable simd_align_16
4266                 enable fast_64bit
4267                 enable fast_clz
4268                 enable fast_cmov
4269                 enable fast_unaligned
4270                 disable aligned_stack
4271                 case $cpu in
4272                     loongson3*)
4273                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4274                     ;;
4275                     loongson2e)
4276                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4277                     ;;
4278                     loongson2f)
4279                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4280                     ;;
4281                 esac
4282             ;;
4283             *)
4284                 # Unknown CPU. Disable everything.
4285                 warn "unknown CPU. Disabling all MIPS optimizations."
4286                 disable mipsfpu
4287                 disable mipsdsp
4288                 disable mipsdspr2
4289                 disable msa
4290                 disable mmi
4291             ;;
4292         esac
4293
4294         case $cpu in
4295             24kc)
4296                 disable mipsfpu
4297                 disable mipsdsp
4298                 disable mipsdspr2
4299             ;;
4300             24kf*)
4301                 disable mipsdsp
4302                 disable mipsdspr2
4303             ;;
4304             24kec|34kc|1004kc)
4305                 disable mipsfpu
4306                 disable mipsdspr2
4307             ;;
4308             24kef*|34kf*|1004kf*)
4309                 disable mipsdspr2
4310             ;;
4311             74kc)
4312                 disable mipsfpu
4313             ;;
4314             p5600)
4315                 enable mips32r5
4316                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4317             ;;
4318             i6400)
4319                 enable mips64r6
4320                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4321             ;;
4322         esac
4323     else
4324         # We do not disable anything. Is up to the user to disable the unwanted features.
4325         warn 'generic cpu selected'
4326     fi
4327
4328 elif enabled ppc; then
4329
4330     disable ldbrx
4331
4332     case $(tolower $cpu) in
4333         601|ppc601|powerpc601)
4334             cpuflags="-mcpu=601"
4335             disable altivec
4336         ;;
4337         603*|ppc603*|powerpc603*)
4338             cpuflags="-mcpu=603"
4339             disable altivec
4340         ;;
4341         604*|ppc604*|powerpc604*)
4342             cpuflags="-mcpu=604"
4343             disable altivec
4344         ;;
4345         g3|75*|ppc75*|powerpc75*)
4346             cpuflags="-mcpu=750"
4347             disable altivec
4348         ;;
4349         g4|745*|ppc745*|powerpc745*)
4350             cpuflags="-mcpu=7450"
4351             disable vsx
4352         ;;
4353         74*|ppc74*|powerpc74*)
4354             cpuflags="-mcpu=7400"
4355             disable vsx
4356         ;;
4357         g5|970|ppc970|powerpc970)
4358             cpuflags="-mcpu=970"
4359             disable vsx
4360         ;;
4361         power[3-6]*)
4362             cpuflags="-mcpu=$cpu"
4363             disable vsx
4364         ;;
4365         power[7-8]*)
4366             cpuflags="-mcpu=$cpu"
4367         ;;
4368         cell)
4369             cpuflags="-mcpu=cell"
4370             enable ldbrx
4371             disable vsx
4372         ;;
4373         e500mc)
4374             cpuflags="-mcpu=e500mc"
4375             disable altivec
4376         ;;
4377         e500v2)
4378             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4379             disable altivec
4380             disable dcbzl
4381         ;;
4382         e500)
4383             cpuflags="-mcpu=8540 -mhard-float"
4384             disable altivec
4385             disable dcbzl
4386         ;;
4387     esac
4388
4389 elif enabled sparc; then
4390
4391     case $cpu in
4392         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4393             cpuflags="-mcpu=$cpu"
4394         ;;
4395         ultrasparc*|niagara[234])
4396             cpuflags="-mcpu=$cpu"
4397         ;;
4398     esac
4399
4400 elif enabled x86; then
4401
4402     case $cpu in
4403         i[345]86|pentium)
4404             cpuflags="-march=$cpu"
4405             disable i686
4406             disable mmx
4407         ;;
4408         # targets that do NOT support nopl and conditional mov (cmov)
4409         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4410             cpuflags="-march=$cpu"
4411             disable i686
4412         ;;
4413         # targets that do support nopl and conditional mov (cmov)
4414         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4415         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4416             cpuflags="-march=$cpu"
4417             enable i686
4418             enable fast_cmov
4419         ;;
4420         # targets that do support conditional mov but on which it's slow
4421         pentium4|pentium4m|prescott|nocona)
4422             cpuflags="-march=$cpu"
4423             enable i686
4424             disable fast_cmov
4425         ;;
4426     esac
4427
4428 fi
4429
4430 if [ "$cpu" != generic ]; then
4431     add_cflags  $cpuflags
4432     add_asflags $cpuflags
4433     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4434 fi
4435
4436 # compiler sanity check
4437 check_exec <<EOF
4438 int main(void){ return 0; }
4439 EOF
4440 if test "$?" != 0; then
4441     echo "$cc is unable to create an executable file."
4442     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4443         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4444         echo "Only do this if you know what cross compiling means."
4445     fi
4446     die "C compiler test failed."
4447 fi
4448
4449 add_cppflags -D_ISOC99_SOURCE
4450 add_cxxflags -D__STDC_CONSTANT_MACROS
4451 check_cflags -std=c99
4452 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4453 #include <stdlib.h>
4454 EOF
4455 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4456 #include <stdlib.h>
4457 EOF
4458
4459 add_host_cppflags -D_ISOC99_SOURCE
4460 check_host_cflags -std=c99
4461 check_host_cflags -Wall
4462 check_host_cflags -O3
4463
4464 check_64bit(){
4465     arch32=$1
4466     arch64=$2
4467     expr=$3
4468     check_code cc "" "int test[2*($expr) - 1]" &&
4469         subarch=$arch64 || subarch=$arch32
4470 }
4471
4472 case "$arch" in
4473     aarch64|alpha|ia64)
4474         spic=$shared
4475     ;;
4476     mips)
4477         check_64bit mips mips64 '_MIPS_SIM > 1'
4478         spic=$shared
4479     ;;
4480     parisc)
4481         check_64bit parisc parisc64 'sizeof(void *) > 4'
4482         spic=$shared
4483     ;;
4484     ppc)
4485         check_64bit ppc ppc64 'sizeof(void *) > 4'
4486         spic=$shared
4487     ;;
4488     s390)
4489         check_64bit s390 s390x 'sizeof(void *) > 4'
4490         spic=$shared
4491     ;;
4492     sparc)
4493         check_64bit sparc sparc64 'sizeof(void *) > 4'
4494         spic=$shared
4495     ;;
4496     x86)
4497         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4498         # Treat x32 as x64 for now. Note it also needs spic=$shared
4499         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4500             subarch=x86_64
4501         if test "$subarch" = "x86_64"; then
4502             spic=$shared
4503         fi
4504     ;;
4505     ppc)
4506         check_cc <<EOF && subarch="ppc64"
4507         int test[(int)sizeof(char*) - 7];
4508 EOF
4509     ;;
4510 esac
4511
4512 enable $subarch
4513 enabled spic && enable_weak pic
4514
4515 # OS specific
4516 case $target_os in
4517     aix)
4518         SHFLAGS=-shared
4519         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4520         enabled shared && add_ldflags -Wl,-brtl
4521         ;;
4522     android)
4523         disable symver
4524         enable section_data_rel_ro
4525         SLIB_INSTALL_NAME='$(SLIBNAME)'
4526         SLIB_INSTALL_LINKS=
4527         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4528         ;;
4529     haiku)
4530         prefix_default="/boot/common"
4531         network_extralibs="-lnetwork"
4532         host_libs=
4533         ;;
4534     sunos)
4535         SHFLAGS='-shared -Wl,-h,$$(@F)'
4536         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4537         network_extralibs="-lsocket -lnsl"
4538         add_cppflags -D__EXTENSIONS__
4539         # When using suncc to build, the Solaris linker will mark
4540         # an executable with each instruction set encountered by
4541         # the Solaris assembler.  As our libraries contain their own
4542         # guards for processor-specific code, instead suppress
4543         # generation of the HWCAPS ELF section on Solaris x86 only.
4544         enabled_all suncc x86 &&
4545             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4546             add_ldflags -Wl,-M,mapfile
4547         nm_default='nm -P -g'
4548         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4549         ;;
4550     netbsd)
4551         disable symver
4552         oss_indev_extralibs="-lossaudio"
4553         oss_outdev_extralibs="-lossaudio"
4554         enabled gcc || check_ldflags -Wl,-zmuldefs
4555         ;;
4556     openbsd|bitrig)
4557         disable symver
4558         SHFLAGS='-shared'
4559         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4560         SLIB_INSTALL_LINKS=
4561         oss_indev_extralibs="-lossaudio"
4562         oss_outdev_extralibs="-lossaudio"
4563         ;;
4564     dragonfly)
4565         disable symver
4566         ;;
4567     freebsd)
4568         ;;
4569     bsd/os)
4570         add_extralibs -lpoll -lgnugetopt
4571         strip="strip -d"
4572         ;;
4573     darwin)
4574         enabled ppc && add_asflags -force_cpusubtype_ALL
4575         install_name_dir_default='$(SHLIBDIR)'
4576         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4577         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4578         strip="${strip} -x"
4579         add_ldflags -Wl,-dynamic,-search_paths_first
4580         SLIBSUF=".dylib"
4581         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4582         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4583         objformat="macho"
4584         enabled x86_64 && objformat="macho64"
4585         enabled_any pic shared x86_64 ||
4586             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4587         check_header dispatch/dispatch.h
4588         ;;
4589     msys*)
4590         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4591         ;;
4592     mingw32*|mingw64*)
4593         if test $target_os = "mingw32ce"; then
4594             disable network
4595         else
4596             target_os=mingw32
4597         fi
4598         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4599         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4600         LIBTARGET=i386
4601         if enabled x86_64; then
4602             LIBTARGET="i386:x86-64"
4603         elif enabled arm; then
4604             LIBTARGET=arm-wince
4605         fi
4606         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4607         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4608         shlibdir_default="$bindir_default"
4609         SLIBPREF=""
4610         SLIBSUF=".dll"
4611         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4612         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4613         dlltool="${cross_prefix}dlltool"
4614         if check_cmd lib.exe -list; then
4615             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4616             if enabled x86_64; then
4617                 LIBTARGET=x64
4618             fi
4619         elif check_cmd $dlltool --version; then
4620             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4621         fi
4622         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4623         SLIB_INSTALL_LINKS=
4624         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4625         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4626         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4627         objformat="win32"
4628         ranlib=:
4629         enable dos_paths
4630         check_ldflags -Wl,--nxcompat,--dynamicbase
4631         # Lets work around some stupidity in binutils.
4632         # ld will strip relocations from executables even though we need them
4633         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4634         # however ld then forgets what the entry point should be (oops) so we
4635         # have to manually (re)set it.
4636         if enabled x86_32; then
4637             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4638         elif enabled x86_64; then
4639             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4640             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4641             # Set image base >4GB for extra entropy with HEASLR
4642             add_ldexeflags -Wl,--image-base,0x140000000
4643             append SHFLAGS -Wl,--image-base,0x180000000
4644         fi
4645         ;;
4646     win32|win64)
4647         disable symver
4648         if enabled shared; then
4649             # Link to the import library instead of the normal static library
4650             # for shared libs.
4651             LD_LIB='%.lib'
4652             # Cannot build both shared and static libs with MSVC or icl.
4653             disable static
4654         fi
4655         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4656         shlibdir_default="$bindir_default"
4657         SLIBPREF=""
4658         SLIBSUF=".dll"
4659         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4660         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4661         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4662         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4663         SLIB_INSTALL_LINKS=
4664         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4665         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4666         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4667         objformat="win32"
4668         ranlib=:
4669         enable dos_paths
4670         ;;
4671     cygwin*)
4672         target_os=cygwin
4673         shlibdir_default="$bindir_default"
4674         SLIBPREF="cyg"
4675         SLIBSUF=".dll"
4676         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4677         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4678         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4679         SLIB_INSTALL_LINKS=
4680         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4681         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4682         objformat="win32"
4683         enable dos_paths
4684         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4685         ;;
4686     *-dos|freedos|opendos)
4687         network_extralibs="-lsocket"
4688         objformat="coff"
4689         enable dos_paths
4690         add_cppflags -U__STRICT_ANSI__
4691         ;;
4692     linux)
4693         enable dv1394
4694         enable section_data_rel_ro
4695         ;;
4696     irix*)
4697         target_os=irix
4698         ranlib="echo ignoring ranlib"
4699         ;;
4700     os/2*)
4701         strip="lxlite -CS"
4702         ln_s="cp -f"
4703         objformat="aout"
4704         add_cppflags -D_GNU_SOURCE
4705         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4706         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4707         LIBSUF="_s.a"
4708         SLIBPREF=""
4709         SLIBSUF=".dll"
4710         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4711         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4712         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4713             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4714             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4715             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4716             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4717         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4718             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4719         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4720         enable dos_paths
4721         enable_weak os2threads
4722         ;;
4723     gnu/kfreebsd)
4724         add_cppflags -D_BSD_SOURCE
4725         ;;
4726     gnu)
4727         ;;
4728     qnx)
4729         add_cppflags -D_QNX_SOURCE
4730         network_extralibs="-lsocket"
4731         ;;
4732     symbian)
4733         SLIBSUF=".dll"
4734         enable dos_paths
4735         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4736         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4737         add_ldflags -Wl,--target1-abs,--no-undefined \
4738                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4739                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4740         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4741                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4742                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4743         ;;
4744     osf1)
4745         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4746         ;;
4747     minix)
4748         ;;
4749     plan9)
4750         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4751                      -D_REENTRANT_SOURCE        \
4752                      -D_RESEARCH_SOURCE         \
4753                      -DFD_SETSIZE=96            \
4754                      -DHAVE_SOCK_OPTS
4755         add_compat strtod.o strtod=avpriv_strtod
4756         network_extralibs='-lbsd'
4757         exeobjs=compat/plan9/main.o
4758         disable ffserver
4759         cp_f='cp'
4760         ;;
4761     none)
4762         ;;
4763     *)
4764         die "Unknown OS '$target_os'."
4765         ;;
4766 esac
4767
4768 # test if creating links works
4769 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4770 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4771 mkdir "$link_dest"
4772 $ln_s "$link_dest" "$link_name"
4773 touch "$link_dest/test_file"
4774 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4775     # create link to source path
4776     [ -e src ] && rm src
4777     $ln_s "$source_path" src
4778     source_link=src
4779 else
4780     # creating directory links doesn't work
4781     # fall back to using the full source path
4782     source_link="$source_path"
4783 fi
4784 # cleanup
4785 rm -r "$link_dest"
4786 rm -r "$link_name"
4787
4788 # determine libc flavour
4789
4790 probe_libc(){
4791     pfx=$1
4792     pfx_no_=${pfx%_}
4793     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4794     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4795         eval ${pfx}libc_type=uclibc
4796         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4797     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4798         eval ${pfx}libc_type=glibc
4799         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4800     # MinGW headers can be installed on Cygwin, so check for newlib first.
4801     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4802         eval ${pfx}libc_type=newlib
4803         add_${pfx}cppflags -U__STRICT_ANSI__
4804     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4805     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4806         eval ${pfx}libc_type=mingw64
4807         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4808             add_compat msvcrt/snprintf.o
4809             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4810         fi
4811         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4812         eval test \$${pfx_no_}cc_type = "gcc" &&
4813             add_${pfx}cppflags -D__printf__=__gnu_printf__
4814     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4815          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4816         eval ${pfx}libc_type=mingw32
4817         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4818             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4819             die "ERROR: MinGW32 runtime version must be >= 3.15."
4820         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4821         eval test \$${pfx_no_}cc_type = "gcc" &&
4822      &n