avformat/riff: add M102 FourCC
[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-libnpp          enable NVIDIA Performance Primitives-based code [no]
238   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
239   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
240   --enable-libopencv       enable video filtering via libopencv [no]
241   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
242   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
243   --enable-libopus         enable Opus de/encoding via libopus [no]
244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
245   --enable-librubberband   enable rubberband needed for rubberband filter [no]
246   --enable-librtmp         enable RTMP[E] support via librtmp [no]
247   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
251   --enable-libsoxr         enable Include libsoxr resampling [no]
252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
253   --enable-libssh          enable SFTP protocol via libssh [no]
254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
255   --enable-libtheora       enable Theora encoding via libtheora [no]
256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
259   --enable-libvidstab      enable video stabilization using vid.stab [no]
260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
262                            native implementation exists [no]
263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
265   --enable-libwebp         enable WebP encoding via libwebp [no]
266   --enable-libx264         enable H.264 encoding via x264 [no]
267   --enable-libx265         enable HEVC encoding via x265 [no]
268   --enable-libxavs         enable AVS encoding via xavs [no]
269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
273   --enable-libxvid         enable Xvid encoding via xvidcore,
274                            native MPEG-4/Xvid encoder exists [no]
275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
276   --enable-libzmq          enable message passing via libzmq [no]
277   --enable-libzvbi         enable teletext support via libzvbi [no]
278   --disable-lzma           disable lzma [autodetect]
279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
280   --enable-mediacodec      enable Android MediaCodec support [no]
281   --enable-mmal            enable decoding via MMAL [no]
282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
283   --enable-nvenc           enable NVIDIA NVENC support [no]
284   --enable-openal          enable OpenAL 1.1 capture support [no]
285   --enable-opencl          enable OpenCL code
286   --enable-opengl          enable OpenGL rendering [no]
287   --enable-openssl         enable openssl, needed for https support
288                            if gnutls is not used [no]
289   --disable-schannel       disable SChannel SSP, needed for TLS support on
290                            Windows if openssl and gnutls are not used [autodetect]
291   --disable-sdl            disable sdl [autodetect]
292   --disable-securetransport disable Secure Transport, needed for TLS support
293                            on OSX if openssl and gnutls are not used [autodetect]
294   --disable-videotoolbox   disable VideoToolbox code [autodetect]
295   --enable-x11grab         enable X11 grabbing (legacy) [no]
296   --disable-xlib           disable xlib [autodetect]
297   --disable-zlib           disable zlib [autodetect]
298
299 Toolchain options:
300   --arch=ARCH              select architecture [$arch]
301   --cpu=CPU                select the minimum required CPU (affects
302                            instruction selection, may crash on older CPUs)
303   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
304   --progs-suffix=SUFFIX    program name suffix []
305   --enable-cross-compile   assume a cross-compiler is used
306   --sysroot=PATH           root of cross-build tree
307   --sysinclude=PATH        location of cross-build system headers
308   --target-os=OS           compiler targets OS [$target_os]
309   --target-exec=CMD        command to run executables on target
310   --target-path=DIR        path to view of build directory on target
311   --target-samples=DIR     path to samples directory on target
312   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
313   --toolchain=NAME         set tool defaults according to NAME
314   --nm=NM                  use nm tool NM [$nm_default]
315   --ar=AR                  use archive tool AR [$ar_default]
316   --as=AS                  use assembler AS [$as_default]
317   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
318   --strip=STRIP            use strip tool STRIP [$strip_default]
319   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
320   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
321   --cc=CC                  use C compiler CC [$cc_default]
322   --cxx=CXX                use C compiler CXX [$cxx_default]
323   --objcc=OCC              use ObjC compiler OCC [$cc_default]
324   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
325   --ld=LD                  use linker LD [$ld_default]
326   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
327   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
328   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
329   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
330   --host-cc=HOSTCC         use host C compiler HOSTCC
331   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
332   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
333   --host-ld=HOSTLD         use host linker HOSTLD
334   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
335   --host-libs=HLIBS        use libs HLIBS when linking for host
336   --host-os=OS             compiler host OS [$target_os]
337   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
338   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
339   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
340   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
341   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
342   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
343   --extra-libs=ELIBS       add ELIBS [$ELIBS]
344   --extra-version=STRING   version string suffix []
345   --optflags=OPTFLAGS      override optimization-related compiler flags
346   --build-suffix=SUFFIX    library name suffix []
347   --enable-pic             build position-independent code
348   --enable-thumb           compile for Thumb instruction set
349   --enable-lto             use link-time optimization
350   --env="ENV=override"     override the environment variables
351
352 Advanced options (experts only):
353   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
354   --custom-allocator=NAME  use a supported custom allocator
355   --disable-symver         disable symbol versioning
356   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
357   --disable-safe-bitstream-reader
358                            disable buffer boundary checking in bitreaders
359                            (faster, but may crash)
360   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
361   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
362
363 Optimization options (experts only):
364   --disable-asm            disable all assembly optimizations
365   --disable-altivec        disable AltiVec optimizations
366   --disable-vsx            disable VSX optimizations
367   --disable-power8         disable POWER8 optimizations
368   --disable-amd3dnow       disable 3DNow! optimizations
369   --disable-amd3dnowext    disable 3DNow! extended optimizations
370   --disable-mmx            disable MMX optimizations
371   --disable-mmxext         disable MMXEXT optimizations
372   --disable-sse            disable SSE optimizations
373   --disable-sse2           disable SSE2 optimizations
374   --disable-sse3           disable SSE3 optimizations
375   --disable-ssse3          disable SSSE3 optimizations
376   --disable-sse4           disable SSE4 optimizations
377   --disable-sse42          disable SSE4.2 optimizations
378   --disable-avx            disable AVX optimizations
379   --disable-xop            disable XOP optimizations
380   --disable-fma3           disable FMA3 optimizations
381   --disable-fma4           disable FMA4 optimizations
382   --disable-avx2           disable AVX2 optimizations
383   --disable-aesni          disable AESNI optimizations
384   --disable-armv5te        disable armv5te optimizations
385   --disable-armv6          disable armv6 optimizations
386   --disable-armv6t2        disable armv6t2 optimizations
387   --disable-vfp            disable VFP optimizations
388   --disable-neon           disable NEON optimizations
389   --disable-inline-asm     disable use of inline assembly
390   --disable-yasm           disable use of nasm/yasm assembly
391   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
392   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
393   --disable-msa            disable MSA optimizations
394   --disable-mipsfpu        disable floating point MIPS optimizations
395   --disable-mmi            disable Loongson SIMD optimizations
396   --disable-fast-unaligned consider unaligned accesses slow
397
398 Developer options (useful when working on FFmpeg itself):
399   --disable-debug          disable debugging symbols
400   --enable-debug=LEVEL     set the debug level [$debuglevel]
401   --disable-optimizations  disable compiler optimizations
402   --enable-extra-warnings  enable more compiler warnings
403   --disable-stripping      disable stripping of executables and shared libraries
404   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
405                            2 causes a slowdown at runtime.
406   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
407   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
408                            leaks and errors, using the specified valgrind binary.
409                            Cannot be combined with --target-exec
410   --enable-ftrapv          Trap arithmetic overflows
411   --samples=PATH           location of test samples for FATE, if not set use
412                            \$FATE_SAMPLES at make invocation time.
413   --enable-neon-clobber-test check NEON registers for clobbering (should be
414                            used only for debugging purposes)
415   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
416                            should be used only for debugging purposes)
417   --enable-random          randomly enable/disable components
418   --disable-random
419   --enable-random=LIST     randomly enable/disable specific components or
420   --disable-random=LIST    component groups. LIST is a comma-separated list
421                            of NAME[:PROB] entries where NAME is a component
422                            (group) and PROB the probability associated with
423                            NAME (default 0.5).
424   --random-seed=VALUE      seed value for --enable/disable-random
425   --disable-valgrind-backtrace do not print a backtrace under Valgrind
426                            (only applies to --disable-optimizations builds)
427
428 NOTE: Object files are built at the place where configure is launched.
429 EOF
430   exit 0
431 }
432
433 quotes='""'
434 if test -t 1 && which tput >/dev/null 2>&1; then
435     ncolors=$(tput colors)
436     if test -n "$ncolors" && test $ncolors -ge 8; then
437         bold_color=$(tput bold)
438         warn_color=$(tput setaf 3)
439         error_color=$(tput setaf 1)
440         reset_color=$(tput sgr0)
441     fi
442     # 72 used instead of 80 since that's the default of pr
443     ncols=$(tput cols)
444 fi
445 : ${ncols:=72}
446
447 log(){
448     echo "$@" >> $logfile
449 }
450
451 log_file(){
452     log BEGIN $1
453     pr -n -t $1 >> $logfile
454     log END $1
455 }
456
457 warn(){
458     log "WARNING: $*"
459     WARNINGS="${WARNINGS}WARNING: $*\n"
460 }
461
462 die(){
463     log "$@"
464     echo "$error_color$bold_color$@$reset_color"
465     cat <<EOF
466
467 If you think configure made a mistake, make sure you are using the latest
468 version from Git.  If the latest version fails, report the problem to the
469 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
470 EOF
471     if disabled logging; then
472         cat <<EOF
473 Rerun configure with logging enabled (do not use --disable-logging), and
474 include the log this produces with your report.
475 EOF
476     else
477         cat <<EOF
478 Include the log file "$logfile" produced by configure as this will help
479 solve the problem.
480 EOF
481     fi
482     exit 1
483 }
484
485 # Avoid locale weirdness, besides we really just want to translate ASCII.
486 toupper(){
487     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
488 }
489
490 tolower(){
491     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
492 }
493
494 c_escape(){
495     echo "$*" | sed 's/["\\]/\\\0/g'
496 }
497
498 sh_quote(){
499     v=$(echo "$1" | sed "s/'/'\\\\''/g")
500     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
501     echo "$v"
502 }
503
504 cleanws(){
505     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
506 }
507
508 filter(){
509     pat=$1
510     shift
511     for v; do
512         eval "case $v in $pat) echo $v ;; esac"
513     done
514 }
515
516 filter_out(){
517     pat=$1
518     shift
519     for v; do
520         eval "case $v in $pat) ;; *) echo $v ;; esac"
521     done
522 }
523
524 map(){
525     m=$1
526     shift
527     for v; do eval $m; done
528 }
529
530 add_suffix(){
531     suffix=$1
532     shift
533     for v; do echo ${v}${suffix}; done
534 }
535
536 set_all(){
537     value=$1
538     shift
539     for var in $*; do
540         eval $var=$value
541     done
542 }
543
544 set_weak(){
545     value=$1
546     shift
547     for var; do
548         eval : \${$var:=$value}
549     done
550 }
551
552 sanitize_var_name(){
553     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
554 }
555
556 set_safe(){
557     var=$1
558     shift
559     eval $(sanitize_var_name "$var")='$*'
560 }
561
562 get_safe(){
563     eval echo \$$(sanitize_var_name "$1")
564 }
565
566 pushvar(){
567     for pvar in $*; do
568         eval level=\${${pvar}_level:=0}
569         eval ${pvar}_${level}="\$$pvar"
570         eval ${pvar}_level=$(($level+1))
571     done
572 }
573
574 popvar(){
575     for pvar in $*; do
576         eval level=\${${pvar}_level:-0}
577         test $level = 0 && continue
578         eval level=$(($level-1))
579         eval $pvar="\${${pvar}_${level}}"
580         eval ${pvar}_level=$level
581         eval unset ${pvar}_${level}
582     done
583 }
584
585 enable(){
586     set_all yes $*
587 }
588
589 disable(){
590     set_all no $*
591 }
592
593 enable_weak(){
594     set_weak yes $*
595 }
596
597 disable_weak(){
598     set_weak no $*
599 }
600
601 enable_safe(){
602     for var; do
603         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
604     done
605 }
606
607 disable_safe(){
608     for var; do
609         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
610     done
611 }
612
613 do_enable_deep(){
614     for var; do
615         enabled $var && continue
616         eval sel="\$${var}_select"
617         eval sgs="\$${var}_suggest"
618         pushvar var sgs
619         enable_deep $sel
620         popvar sgs
621         enable_deep_weak $sgs
622         popvar var
623     done
624 }
625
626 enable_deep(){
627     do_enable_deep $*
628     enable $*
629 }
630
631 enable_deep_weak(){
632     for var; do
633         disabled $var && continue
634         pushvar var
635         do_enable_deep $var
636         popvar var
637         enable_weak $var
638     done
639 }
640
641 enabled(){
642     test "${1#!}" = "$1" && op='=' || op=!=
643     eval test "x\$${1#!}" $op "xyes"
644 }
645
646 disabled(){
647     test "${1#!}" = "$1" && op='=' || op=!=
648     eval test "x\$${1#!}" $op "xno"
649 }
650
651 enabled_all(){
652     for opt; do
653         enabled $opt || return 1
654     done
655 }
656
657 disabled_all(){
658     for opt; do
659         disabled $opt || return 1
660     done
661 }
662
663 enabled_any(){
664     for opt; do
665         enabled $opt && return 0
666     done
667 }
668
669 disabled_any(){
670     for opt; do
671         disabled $opt && return 0
672     done
673     return 1
674 }
675
676 set_default(){
677     for opt; do
678         eval : \${$opt:=\$${opt}_default}
679     done
680 }
681
682 is_in(){
683     value=$1
684     shift
685     for var in $*; do
686         [ $var = $value ] && return 0
687     done
688     return 1
689 }
690
691 do_check_deps(){
692     for cfg; do
693         cfg="${cfg#!}"
694         enabled ${cfg}_checking && die "Circular dependency for $cfg."
695         disabled ${cfg}_checking && continue
696         enable ${cfg}_checking
697         append allopts $cfg
698
699         eval dep_all="\$${cfg}_deps"
700         eval dep_any="\$${cfg}_deps_any"
701         eval dep_sel="\$${cfg}_select"
702         eval dep_sgs="\$${cfg}_suggest"
703         eval dep_ifa="\$${cfg}_if"
704         eval dep_ifn="\$${cfg}_if_any"
705
706         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
707         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
708         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
709
710         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
711         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
712         enabled_all  $dep_all || disable $cfg
713         enabled_any  $dep_any || disable $cfg
714         disabled_any $dep_sel && disable $cfg
715
716         if enabled $cfg; then
717             enable_deep $dep_sel
718             enable_deep_weak $dep_sgs
719         fi
720
721         disable ${cfg}_checking
722     done
723 }
724
725 check_deps(){
726     unset allopts
727
728     do_check_deps "$@"
729
730     for cfg in $allopts; do
731         enabled $cfg || continue
732         eval dep_extralibs="\$${cfg}_extralibs"
733         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
734     done
735 }
736
737 print_config(){
738     pfx=$1
739     files=$2
740     shift 2
741     map 'eval echo "$v \${$v:-no}"' "$@" |
742     awk "BEGIN { split(\"$files\", files) }
743         {
744             c = \"$pfx\" toupper(\$1);
745             v = \$2;
746             sub(/yes/, 1, v);
747             sub(/no/,  0, v);
748             for (f in files) {
749                 file = files[f];
750                 if (file ~ /\\.h\$/) {
751                     printf(\"#define %s %d\\n\", c, v) >>file;
752                 } else if (file ~ /\\.asm\$/) {
753                     printf(\"%%define %s %d\\n\", c, v) >>file;
754                 } else if (file ~ /\\.mak\$/) {
755                     n = -v ? \"\" : \"!\";
756                     printf(\"%s%s=yes\\n\", n, c) >>file;
757                 } else if (file ~ /\\.texi\$/) {
758                     pre = -v ? \"\" : \"@c \";
759                     yesno = \$2;
760                     c2 = tolower(c);
761                     gsub(/_/, \"-\", c2);
762                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
763                 }
764             }
765         }"
766 }
767
768 print_enabled(){
769     suf=$1
770     shift
771     for v; do
772         enabled $v && printf "%s\n" ${v%$suf};
773     done
774 }
775
776 append(){
777     var=$1
778     shift
779     eval "$var=\"\$$var $*\""
780 }
781
782 prepend(){
783     var=$1
784     shift
785     eval "$var=\"$* \$$var\""
786 }
787
788 unique(){
789     var=$1
790     uniq_list=""
791     for tok in $(eval echo \$$var); do
792         uniq_list="$(filter_out $tok $uniq_list) $tok"
793     done
794     eval "$var=\"${uniq_list}\""
795 }
796
797 add_cppflags(){
798     append CPPFLAGS "$@"
799 }
800
801 add_cflags(){
802     append CFLAGS $($cflags_filter "$@")
803 }
804
805 add_cxxflags(){
806     append CXXFLAGS $($cflags_filter "$@")
807 }
808
809 add_asflags(){
810     append ASFLAGS $($asflags_filter "$@")
811 }
812
813 add_objcflags(){
814     append OBJCFLAGS $($objcflags_filter "$@")
815 }
816
817 add_ldflags(){
818     append LDFLAGS $($ldflags_filter "$@")
819 }
820
821 add_ldexeflags(){
822     append LDEXEFLAGS $($ldflags_filter "$@")
823 }
824
825 add_ldlibflags(){
826     append LDLIBFLAGS $($ldflags_filter "$@")
827 }
828
829 add_stripflags(){
830     append ASMSTRIPFLAGS "$@"
831 }
832
833 add_extralibs(){
834     prepend extralibs $($ldflags_filter "$@")
835 }
836
837 add_host_cppflags(){
838     append host_cppflags "$@"
839 }
840
841 add_host_cflags(){
842     append host_cflags $($host_cflags_filter "$@")
843 }
844
845 add_host_ldflags(){
846     append host_ldflags $($host_ldflags_filter "$@")
847 }
848
849 add_compat(){
850     append compat_objs $1
851     shift
852     map 'add_cppflags -D$v' "$@"
853 }
854
855 check_cmd(){
856     log "$@"
857     "$@" >> $logfile 2>&1
858 }
859
860 check_stat(){
861     log check_stat "$@"
862     stat "$1" >> $logfile 2>&1
863 }
864
865 cc_o(){
866     eval printf '%s\\n' $CC_O
867 }
868
869 cc_e(){
870     eval printf '%s\\n' $CC_E
871 }
872
873 check_cc(){
874     log check_cc "$@"
875     cat > $TMPC
876     log_file $TMPC
877     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
878 }
879
880 check_cxx(){
881     log check_cxx "$@"
882     cat > $TMPCPP
883     log_file $TMPCPP
884     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
885 }
886
887 check_objcc(){
888     log check_objcc "$@"
889     cat > $TMPM
890     log_file $TMPM
891     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
892 }
893
894 check_cpp(){
895     log check_cpp "$@"
896     cat > $TMPC
897     log_file $TMPC
898     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
899 }
900
901 as_o(){
902     eval printf '%s\\n' $AS_O
903 }
904
905 check_as(){
906     log check_as "$@"
907     cat > $TMPS
908     log_file $TMPS
909     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
910 }
911
912 check_inline_asm(){
913     log check_inline_asm "$@"
914     name="$1"
915     code="$2"
916     shift 2
917     disable $name
918     check_cc "$@" <<EOF && enable $name
919 void foo(void){ __asm__ volatile($code); }
920 EOF
921 }
922
923 check_inline_asm_flags(){
924     log check_inline_asm_flags "$@"
925     name="$1"
926     code="$2"
927     flags=''
928     shift 2
929     while [ "$1" != "" ]; do
930       append flags $1
931       shift
932     done;
933     disable $name
934     cat > $TMPC <<EOF
935 void foo(void){ __asm__ volatile($code); }
936 EOF
937     log_file $TMPC
938     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
939     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
940 }
941
942 check_insn(){
943     log check_insn "$@"
944     check_inline_asm ${1}_inline "\"$2\""
945     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
946 }
947
948 check_yasm(){
949     log check_yasm "$@"
950     echo "$1" > $TMPS
951     log_file $TMPS
952     shift 1
953     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
954 }
955
956 ld_o(){
957     eval printf '%s\\n' $LD_O
958 }
959
960 check_ld(){
961     log check_ld "$@"
962     type=$1
963     shift 1
964     flags=$(filter_out '-l*|*.so' $@)
965     libs=$(filter '-l*|*.so' $@)
966     check_$type $($cflags_filter $flags) || return
967     flags=$($ldflags_filter $flags)
968     libs=$($ldflags_filter $libs)
969     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
970 }
971
972 print_include(){
973     hdr=$1
974     test "${hdr%.h}" = "${hdr}" &&
975         echo "#include $hdr"    ||
976         echo "#include <$hdr>"
977 }
978
979 check_code(){
980     log check_code "$@"
981     check=$1
982     headers=$2
983     code=$3
984     shift 3
985     {
986         for hdr in $headers; do
987             print_include $hdr
988         done
989         echo "int main(void) { $code; return 0; }"
990     } | check_$check "$@"
991 }
992
993 check_cppflags(){
994     log check_cppflags "$@"
995     check_cc "$@" <<EOF && append CPPFLAGS "$@"
996 int x;
997 EOF
998 }
999
1000 test_cflags(){
1001     log test_cflags "$@"
1002     set -- $($cflags_filter "$@")
1003     check_cc "$@" <<EOF
1004 int x;
1005 EOF
1006 }
1007
1008 check_cflags(){
1009     log check_cflags "$@"
1010     test_cflags "$@" && add_cflags "$@"
1011 }
1012
1013 check_cxxflags(){
1014     log check_cxxflags "$@"
1015     set -- $($cflags_filter "$@")
1016     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1017 int x;
1018 EOF
1019 }
1020
1021 test_objcflags(){
1022     log test_cflags "$@"
1023     set -- $($cflags_filter "$@")
1024     check_objcc "$@" <<EOF
1025 int x;
1026 EOF
1027 }
1028
1029 check_objcflags(){
1030     log check_cflags "$@"
1031     test_objcflags "$@" && add_objcflags "$@"
1032 }
1033
1034 test_ldflags(){
1035     log test_ldflags "$@"
1036     check_ld "cc" "$@" <<EOF
1037 int main(void){ return 0; }
1038 EOF
1039 }
1040
1041 check_ldflags(){
1042     log check_ldflags "$@"
1043     test_ldflags "$@" && add_ldflags "$@"
1044 }
1045
1046 test_stripflags(){
1047     log test_stripflags "$@"
1048     # call check_cc to get a fresh TMPO
1049     check_cc <<EOF
1050 int main(void) { return 0; }
1051 EOF
1052     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1053 }
1054
1055 check_stripflags(){
1056     log check_stripflags "$@"
1057     test_stripflags "$@" && add_stripflags "$@"
1058 }
1059
1060 check_header(){
1061     log check_header "$@"
1062     header=$1
1063     shift
1064     disable_safe $header
1065     check_cpp "$@" <<EOF && enable_safe $header
1066 #include <$header>
1067 int x;
1068 EOF
1069 }
1070
1071 check_header_objcc(){
1072     log check_header_objcc "$@"
1073     rm -f -- "$TMPO"
1074     header=$1
1075     shift
1076     disable_safe $header
1077     {
1078        echo "#include <$header>"
1079        echo "int main(void) { return 0; }"
1080     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1081 }
1082
1083 check_func(){
1084     log check_func "$@"
1085     func=$1
1086     shift
1087     disable $func
1088     check_ld "cc" "$@" <<EOF && enable $func
1089 extern int $func();
1090 int main(void){ $func(); }
1091 EOF
1092 }
1093
1094 check_complexfunc(){
1095     log check_complexfunc "$@"
1096     func=$1
1097     narg=$2
1098     shift 2
1099     test $narg = 2 && args="f, g" || args="f * I"
1100     disable $func
1101     check_ld "cc" "$@" <<EOF && enable $func
1102 #include <complex.h>
1103 #include <math.h>
1104 float foo(complex float f, complex float g) { return $func($args); }
1105 int main(void){ return (int) foo; }
1106 EOF
1107 }
1108
1109 check_mathfunc(){
1110     log check_mathfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <math.h>
1118 float foo(float f, float g) { return $func($args); }
1119 int main(void){ return (int) foo; }
1120 EOF
1121 }
1122
1123 check_func_headers(){
1124     log check_func_headers "$@"
1125     headers=$1
1126     funcs=$2
1127     shift 2
1128     {
1129         for hdr in $headers; do
1130             print_include $hdr
1131         done
1132         for func in $funcs; do
1133             echo "long check_$func(void) { return (long) $func; }"
1134         done
1135         echo "int main(void) { return 0; }"
1136     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1137 }
1138
1139 check_class_headers_cpp(){
1140     log check_class_headers_cpp "$@"
1141     headers=$1
1142     classes=$2
1143     shift 2
1144     {
1145         for hdr in $headers; do
1146             echo "#include <$hdr>"
1147         done
1148         echo "int main(void) { "
1149         i=1
1150         for class in $classes; do
1151             echo "$class obj$i;"
1152             i=$(expr $i + 1)
1153         done
1154         echo "return 0; }"
1155     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_cpp_condition(){
1159     log check_cpp_condition "$@"
1160     header=$1
1161     condition=$2
1162     shift 2
1163     check_cpp "$@" <<EOF
1164 #include <$header>
1165 #if !($condition)
1166 #error "unsatisfied condition: $condition"
1167 #endif
1168 EOF
1169 }
1170
1171 check_lib(){
1172     log check_lib "$@"
1173     header="$1"
1174     func="$2"
1175     shift 2
1176     check_header $header && check_func $func "$@" && add_extralibs "$@"
1177 }
1178
1179 check_lib2(){
1180     log check_lib2 "$@"
1181     headers="$1"
1182     funcs="$2"
1183     shift 2
1184     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1185 }
1186
1187 check_lib_cpp(){
1188     log check_lib_cpp "$@"
1189     headers="$1"
1190     classes="$2"
1191     shift 2
1192     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1193 }
1194
1195 check_pkg_config(){
1196     log check_pkg_config "$@"
1197     pkgandversion="$1"
1198     pkg="${1%% *}"
1199     headers="$2"
1200     funcs="$3"
1201     shift 3
1202     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1206         set_safe "${pkg}_cflags" $pkg_cflags   &&
1207         set_safe "${pkg}_libs"   $pkg_libs
1208 }
1209
1210 check_exec(){
1211     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1212 }
1213
1214 check_exec_crash(){
1215     code=$(cat)
1216
1217     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1218     # are safe but may not be available everywhere.  Thus we use
1219     # raise(SIGTERM) instead.  The check is run in a subshell so we
1220     # can redirect the "Terminated" message from the shell.  SIGBUS
1221     # is not defined by standard C so it is used conditionally.
1222
1223     (check_exec "$@") >> $logfile 2>&1 <<EOF
1224 #include <signal.h>
1225 static void sighandler(int sig){
1226     raise(SIGTERM);
1227 }
1228 int foo(void){
1229     $code
1230 }
1231 int (*func_ptr)(void) = foo;
1232 int main(void){
1233     signal(SIGILL, sighandler);
1234     signal(SIGFPE, sighandler);
1235     signal(SIGSEGV, sighandler);
1236 #ifdef SIGBUS
1237     signal(SIGBUS, sighandler);
1238 #endif
1239     return func_ptr();
1240 }
1241 EOF
1242 }
1243
1244 check_type(){
1245     log check_type "$@"
1246     headers=$1
1247     type=$2
1248     shift 2
1249     disable_safe "$type"
1250     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1251 }
1252
1253 check_struct(){
1254     log check_struct "$@"
1255     headers=$1
1256     struct=$2
1257     member=$3
1258     shift 3
1259     disable_safe "${struct}_${member}"
1260     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1261         enable_safe "${struct}_${member}"
1262 }
1263
1264 check_builtin(){
1265     log check_builtin "$@"
1266     name=$1
1267     headers=$2
1268     builtin=$3
1269     shift 3
1270     disable "$name"
1271     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1272 }
1273
1274 check_compile_assert(){
1275     log check_compile_assert "$@"
1276     name=$1
1277     headers=$2
1278     condition=$3
1279     shift 3
1280     disable "$name"
1281     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1282 }
1283
1284 require(){
1285     name="$1"
1286     header="$2"
1287     func="$3"
1288     shift 3
1289     check_lib $header $func "$@" || die "ERROR: $name not found"
1290 }
1291
1292 require2(){
1293     name="$1"
1294     headers="$2"
1295     func="$3"
1296     shift 3
1297     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1298 }
1299
1300 require_cpp(){
1301     name="$1"
1302     headers="$2"
1303     classes="$3"
1304     shift 3
1305     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1306 }
1307
1308 use_pkg_config(){
1309     pkg="$1"
1310     check_pkg_config "$@" || return 1
1311     add_cflags    $(get_safe "${pkg}_cflags")
1312     add_extralibs $(get_safe "${pkg}_libs")
1313 }
1314
1315 require_pkg_config(){
1316     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1317 }
1318
1319 require_libfreetype(){
1320     log require_libfreetype "$@"
1321     pkg="freetype2"
1322     check_cmd $pkg_config --exists --print-errors $pkg \
1323       || die "ERROR: $pkg not found"
1324     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1325     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1326     {
1327         echo "#include <ft2build.h>"
1328         echo "#include FT_FREETYPE_H"
1329         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1330         echo "int main(void) { return 0; }"
1331     } | check_ld "cc" $pkg_cflags $pkg_libs \
1332       && set_safe "${pkg}_cflags" $pkg_cflags \
1333       && set_safe "${pkg}_libs"   $pkg_libs \
1334       || die "ERROR: $pkg not found"
1335     add_cflags    $(get_safe "${pkg}_cflags")
1336     add_extralibs $(get_safe "${pkg}_libs")
1337 }
1338
1339 hostcc_e(){
1340     eval printf '%s\\n' $HOSTCC_E
1341 }
1342
1343 hostcc_o(){
1344     eval printf '%s\\n' $HOSTCC_O
1345 }
1346
1347 check_host_cc(){
1348     log check_host_cc "$@"
1349     cat > $TMPC
1350     log_file $TMPC
1351     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1352 }
1353
1354 check_host_cpp(){
1355     log check_host_cpp "$@"
1356     cat > $TMPC
1357     log_file $TMPC
1358     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1359 }
1360
1361 check_host_cppflags(){
1362     log check_host_cppflags "$@"
1363     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1364 int x;
1365 EOF
1366 }
1367
1368 check_host_cflags(){
1369     log check_host_cflags "$@"
1370     set -- $($host_cflags_filter "$@")
1371     check_host_cc "$@" <<EOF && append host_cflags "$@"
1372 int x;
1373 EOF
1374 }
1375
1376 check_host_cpp_condition(){
1377     log check_host_cpp_condition "$@"
1378     header=$1
1379     condition=$2
1380     shift 2
1381     check_host_cpp "$@" <<EOF
1382 #include <$header>
1383 #if !($condition)
1384 #error "unsatisfied condition: $condition"
1385 #endif
1386 EOF
1387 }
1388
1389 cp_if_changed(){
1390     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1391     mkdir -p "$(dirname $2)"
1392     $cp_f "$1" "$2"
1393 }
1394
1395 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1396 # system-dependent things.
1397
1398 AVCODEC_COMPONENTS="
1399     bsfs
1400     decoders
1401     encoders
1402     hwaccels
1403     parsers
1404 "
1405
1406 AVDEVICE_COMPONENTS="
1407     indevs
1408     outdevs
1409 "
1410 AVFILTER_COMPONENTS="
1411     filters
1412 "
1413 AVFORMAT_COMPONENTS="
1414     demuxers
1415     muxers
1416     protocols
1417 "
1418
1419 AVRESAMPLE_COMPONENTS=""
1420 AVUTIL_COMPONENTS=""
1421
1422 COMPONENT_LIST="
1423     $AVCODEC_COMPONENTS
1424     $AVDEVICE_COMPONENTS
1425     $AVFILTER_COMPONENTS
1426     $AVFORMAT_COMPONENTS
1427     $AVRESAMPLE_COMPONENTS
1428     $AVUTIL_COMPONENTS
1429 "
1430
1431 EXAMPLE_LIST="
1432     avio_reading_example
1433     avio_dir_cmd_example
1434     decoding_encoding_example
1435     demuxing_decoding_example
1436     extract_mvs_example
1437     filter_audio_example
1438     filtering_audio_example
1439     filtering_video_example
1440     metadata_example
1441     muxing_example
1442     qsvdec_example
1443     remuxing_example
1444     resampling_audio_example
1445     scaling_video_example
1446     transcode_aac_example
1447     transcoding_example
1448 "
1449
1450 EXTERNAL_LIBRARY_LIST="
1451     audiotoolbox
1452     avisynth
1453     bzlib
1454     chromaprint
1455     crystalhd
1456     cuda
1457     decklink
1458     frei0r
1459     gcrypt
1460     gmp
1461     gnutls
1462     iconv
1463     jni
1464     ladspa
1465     libass
1466     libbluray
1467     libbs2b
1468     libcaca
1469     libcdio
1470     libcelt
1471     libdc1394
1472     libfaac
1473     libfdk_aac
1474     libflite
1475     libfontconfig
1476     libfreetype
1477     libfribidi
1478     libgme
1479     libgsm
1480     libiec61883
1481     libilbc
1482     libkvazaar
1483     libmfx
1484     libmodplug
1485     libmp3lame
1486     libnut
1487     libnpp
1488     libopencore_amrnb
1489     libopencore_amrwb
1490     libopencv
1491     libopenh264
1492     libopenjpeg
1493     libopus
1494     libpulse
1495     librtmp
1496     librubberband
1497     libschroedinger
1498     libshine
1499     libsmbclient
1500     libsnappy
1501     libsoxr
1502     libspeex
1503     libssh
1504     libtesseract
1505     libtheora
1506     libtwolame
1507     libutvideo
1508     libv4l2
1509     libvidstab
1510     libvo_amrwbenc
1511     libvorbis
1512     libvpx
1513     libwavpack
1514     libwebp
1515     libx264
1516     libx265
1517     libxavs
1518     libxcb
1519     libxcb_shm
1520     libxcb_shape
1521     libxcb_xfixes
1522     libxvid
1523     libzimg
1524     libzmq
1525     libzvbi
1526     lzma
1527     mediacodec
1528     mmal
1529     netcdf
1530     nvenc
1531     openal
1532     opencl
1533     opengl
1534     openssl
1535     schannel
1536     sdl
1537     securetransport
1538     videotoolbox
1539     x11grab
1540     xlib
1541     zlib
1542 "
1543
1544 DOCUMENT_LIST="
1545     doc
1546     htmlpages
1547     manpages
1548     podpages
1549     txtpages
1550 "
1551
1552 FEATURE_LIST="
1553     ftrapv
1554     gray
1555     hardcoded_tables
1556     runtime_cpudetect
1557     safe_bitstream_reader
1558     shared
1559     small
1560     static
1561     swscale_alpha
1562 "
1563
1564 HWACCEL_LIST="
1565     d3d11va
1566     dxva2
1567     vaapi
1568     vda
1569     vdpau
1570     videotoolbox_hwaccel
1571     xvmc
1572 "
1573
1574 LIBRARY_LIST="
1575     avcodec
1576     avdevice
1577     avfilter
1578     avformat
1579     avresample
1580     avutil
1581     postproc
1582     swresample
1583     swscale
1584 "
1585
1586 LICENSE_LIST="
1587     gpl
1588     nonfree
1589     version3
1590 "
1591
1592 PROGRAM_LIST="
1593     ffplay
1594     ffprobe
1595     ffserver
1596     ffmpeg
1597 "
1598
1599 SUBSYSTEM_LIST="
1600     dct
1601     dwt
1602     error_resilience
1603     faan
1604     fast_unaligned
1605     fft
1606     lsp
1607     lzo
1608     mdct
1609     pixelutils
1610     network
1611     rdft
1612 "
1613
1614 CONFIG_LIST="
1615     $COMPONENT_LIST
1616     $DOCUMENT_LIST
1617     $EXAMPLE_LIST
1618     $EXTERNAL_LIBRARY_LIST
1619     $FEATURE_LIST
1620     $HWACCEL_LIST
1621     $LICENSE_LIST
1622     $LIBRARY_LIST
1623     $PROGRAM_LIST
1624     $SUBSYSTEM_LIST
1625     fontconfig
1626     incompatible_libav_abi
1627     memalign_hack
1628     memory_poisoning
1629     neon_clobber_test
1630     pic
1631     pod2man
1632     raise_major
1633     thumb
1634     valgrind_backtrace
1635     xmm_clobber_test
1636 "
1637
1638 THREADS_LIST="
1639     pthreads
1640     os2threads
1641     w32threads
1642 "
1643
1644 ATOMICS_LIST="
1645     atomics_gcc
1646     atomics_suncc
1647     atomics_win32
1648 "
1649
1650 ARCH_LIST="
1651     aarch64
1652     alpha
1653     arm
1654     avr32
1655     avr32_ap
1656     avr32_uc
1657     bfin
1658     ia64
1659     m68k
1660     mips
1661     mips64
1662     parisc
1663     ppc
1664     ppc64
1665     s390
1666     sh4
1667     sparc
1668     sparc64
1669     tilegx
1670     tilepro
1671     tomi
1672     x86
1673     x86_32
1674     x86_64
1675 "
1676
1677 ARCH_EXT_LIST_ARM="
1678     armv5te
1679     armv6
1680     armv6t2
1681     armv8
1682     neon
1683     vfp
1684     vfpv3
1685     setend
1686 "
1687
1688 ARCH_EXT_LIST_MIPS="
1689     mipsfpu
1690     mips32r2
1691     mips32r5
1692     mips64r2
1693     mips32r6
1694     mips64r6
1695     mipsdsp
1696     mipsdspr2
1697     msa
1698 "
1699
1700 ARCH_EXT_LIST_LOONGSON="
1701     loongson2
1702     loongson3
1703     mmi
1704 "
1705
1706 ARCH_EXT_LIST_X86_SIMD="
1707     aesni
1708     amd3dnow
1709     amd3dnowext
1710     avx
1711     avx2
1712     fma3
1713     fma4
1714     mmx
1715     mmxext
1716     sse
1717     sse2
1718     sse3
1719     sse4
1720     sse42
1721     ssse3
1722     xop
1723 "
1724
1725 ARCH_EXT_LIST_PPC="
1726     altivec
1727     dcbzl
1728     ldbrx
1729     power8
1730     ppc4xx
1731     vsx
1732 "
1733
1734 ARCH_EXT_LIST_X86="
1735     $ARCH_EXT_LIST_X86_SIMD
1736     cpunop
1737     i686
1738 "
1739
1740 ARCH_EXT_LIST="
1741     $ARCH_EXT_LIST_ARM
1742     $ARCH_EXT_LIST_PPC
1743     $ARCH_EXT_LIST_X86
1744     $ARCH_EXT_LIST_MIPS
1745     $ARCH_EXT_LIST_LOONGSON
1746 "
1747
1748 ARCH_FEATURES="
1749     aligned_stack
1750     fast_64bit
1751     fast_clz
1752     fast_cmov
1753     local_aligned_8
1754     local_aligned_16
1755     local_aligned_32
1756     simd_align_16
1757 "
1758
1759 BUILTIN_LIST="
1760     atomic_cas_ptr
1761     atomic_compare_exchange
1762     machine_rw_barrier
1763     MemoryBarrier
1764     mm_empty
1765     rdtsc
1766     sarestart
1767     sem_timedwait
1768     sync_val_compare_and_swap
1769 "
1770 HAVE_LIST_CMDLINE="
1771     inline_asm
1772     symver
1773     yasm
1774 "
1775
1776 HAVE_LIST_PUB="
1777     bigendian
1778     fast_unaligned
1779     incompatible_libav_abi
1780 "
1781
1782 HEADERS_LIST="
1783     alsa_asoundlib_h
1784     altivec_h
1785     arpa_inet_h
1786     asm_types_h
1787     cdio_paranoia_h
1788     cdio_paranoia_paranoia_h
1789     dispatch_dispatch_h
1790     dev_bktr_ioctl_bt848_h
1791     dev_bktr_ioctl_meteor_h
1792     dev_ic_bt8xx_h
1793     dev_video_bktr_ioctl_bt848_h
1794     dev_video_meteor_ioctl_meteor_h
1795     direct_h
1796     dirent_h
1797     dlfcn_h
1798     d3d11_h
1799     dxva_h
1800     ES2_gl_h
1801     gsm_h
1802     io_h
1803     mach_mach_time_h
1804     machine_ioctl_bt848_h
1805     machine_ioctl_meteor_h
1806     malloc_h
1807     opencv2_core_core_c_h
1808     openjpeg_2_1_openjpeg_h
1809     openjpeg_2_0_openjpeg_h
1810     openjpeg_1_5_openjpeg_h
1811     OpenGL_gl3_h
1812     poll_h
1813     sndio_h
1814     soundcard_h
1815     sys_mman_h
1816     sys_param_h
1817     sys_resource_h
1818     sys_select_h
1819     sys_soundcard_h
1820     sys_time_h
1821     sys_un_h
1822     sys_videoio_h
1823     termios_h
1824     udplite_h
1825     unistd_h
1826     valgrind_valgrind_h
1827     windows_h
1828     winsock2_h
1829 "
1830
1831 INTRINSICS_LIST="
1832     intrinsics_neon
1833 "
1834
1835 COMPLEX_FUNCS="
1836     cabs
1837     cexp
1838 "
1839
1840 MATH_FUNCS="
1841     atanf
1842     atan2f
1843     cbrt
1844     cbrtf
1845     copysign
1846     cosf
1847     erf
1848     exp2
1849     exp2f
1850     expf
1851     hypot
1852     isfinite
1853     isinf
1854     isnan
1855     ldexpf
1856     llrint
1857     llrintf
1858     log2
1859     log2f
1860     log10f
1861     lrint
1862     lrintf
1863     powf
1864     rint
1865     round
1866     roundf
1867     sinf
1868     trunc
1869     truncf
1870 "
1871
1872 SYSTEM_FUNCS="
1873     access
1874     aligned_malloc
1875     arc4random
1876     clock_gettime
1877     closesocket
1878     CommandLineToArgvW
1879     CoTaskMemFree
1880     CryptGenRandom
1881     dlopen
1882     fcntl
1883     flt_lim
1884     fork
1885     getaddrinfo
1886     gethrtime
1887     getopt
1888     GetProcessAffinityMask
1889     GetProcessMemoryInfo
1890     GetProcessTimes
1891     getrusage
1892     GetSystemTimeAsFileTime
1893     gettimeofday
1894     glob
1895     glXGetProcAddress
1896     gmtime_r
1897     inet_aton
1898     isatty
1899     jack_port_get_latency_range
1900     kbhit
1901     localtime_r
1902     lstat
1903     lzo1x_999_compress
1904     mach_absolute_time
1905     MapViewOfFile
1906     memalign
1907     mkstemp
1908     mmap
1909     mprotect
1910     nanosleep
1911     PeekNamedPipe
1912     posix_memalign
1913     pthread_cancel
1914     sched_getaffinity
1915     SetConsoleTextAttribute
1916     SetConsoleCtrlHandler
1917     setmode
1918     setrlimit
1919     Sleep
1920     strerror_r
1921     sysconf
1922     sysctl
1923     usleep
1924     UTGetOSTypeFromString
1925     VirtualAlloc
1926     wglGetProcAddress
1927 "
1928
1929 TOOLCHAIN_FEATURES="
1930     as_dn_directive
1931     as_func
1932     as_object_arch
1933     asm_mod_q
1934     attribute_may_alias
1935     attribute_packed
1936     ebp_available
1937     ebx_available
1938     gnu_as
1939     gnu_windres
1940     ibm_asm
1941     inline_asm_direct_symbol_refs
1942     inline_asm_labels
1943     inline_asm_nonlocal_labels
1944     pragma_deprecated
1945     rsync_contimeout
1946     symver_asm_label
1947     symver_gnu_asm
1948     vfp_args
1949     xform_asm
1950     xmm_clobbers
1951 "
1952
1953 TYPES_LIST="
1954     CONDITION_VARIABLE_Ptr
1955     socklen_t
1956     struct_addrinfo
1957     struct_group_source_req
1958     struct_ip_mreq_source
1959     struct_ipv6_mreq
1960     struct_msghdr_msg_flags
1961     struct_pollfd
1962     struct_rusage_ru_maxrss
1963     struct_sctp_event_subscribe
1964     struct_sockaddr_in6
1965     struct_sockaddr_sa_len
1966     struct_sockaddr_storage
1967     struct_stat_st_mtim_tv_nsec
1968     struct_v4l2_frmivalenum_discrete
1969 "
1970
1971 HAVE_LIST="
1972     $ARCH_EXT_LIST
1973     $(add_suffix _external $ARCH_EXT_LIST)
1974     $(add_suffix _inline   $ARCH_EXT_LIST)
1975     $ARCH_FEATURES
1976     $ATOMICS_LIST
1977     $BUILTIN_LIST
1978     $COMPLEX_FUNCS
1979     $HAVE_LIST_CMDLINE
1980     $HAVE_LIST_PUB
1981     $HEADERS_LIST
1982     $INTRINSICS_LIST
1983     $MATH_FUNCS
1984     $SYSTEM_FUNCS
1985     $THREADS_LIST
1986     $TOOLCHAIN_FEATURES
1987     $TYPES_LIST
1988     atomics_native
1989     dos_paths
1990     dxva2_lib
1991     dxva2api_cobj
1992     libc_msvcrt
1993     libdc1394_1
1994     libdc1394_2
1995     makeinfo
1996     makeinfo_html
1997     perl
1998     pod2man
1999     sdl
2000     section_data_rel_ro
2001     texi2html
2002     threads
2003     vaapi_x11
2004     vdpau_x11
2005     winrt
2006     xlib
2007 "
2008
2009 # options emitted with CONFIG_ prefix but not available on the command line
2010 CONFIG_EXTRA="
2011     aandcttables
2012     ac3dsp
2013     audio_frame_queue
2014     audiodsp
2015     blockdsp
2016     bswapdsp
2017     cabac
2018     dirac_parse
2019     dvprofile
2020     exif
2021     faandct
2022     faanidct
2023     fdctdsp
2024     flacdsp
2025     fmtconvert
2026     frame_thread_encoder
2027     g722dsp
2028     golomb
2029     gplv3
2030     h263dsp
2031     h264chroma
2032     h264dsp
2033     h264pred
2034     h264qpel
2035     hpeldsp
2036     huffman
2037     huffyuvdsp
2038     huffyuvencdsp
2039     idctdsp
2040     iirfilter
2041     imdct15
2042     intrax8
2043     iso_media
2044     ividsp
2045     jpegtables
2046     lgplv3
2047     libx262
2048     llauddsp
2049     llviddsp
2050     lpc
2051     lzf
2052     me_cmp
2053     mpeg_er
2054     mpegaudio
2055     mpegaudiodsp
2056     mpegvideo
2057     mpegvideoenc
2058     mss34dsp
2059     pixblockdsp
2060     qpeldsp
2061     qsv
2062     qsvdec
2063     qsvenc
2064     rangecoder
2065     riffdec
2066     riffenc
2067     rtpdec
2068     rtpenc_chain
2069     rv34dsp
2070     sinewin
2071     snappy
2072     srtp
2073     startcode
2074     texturedsp
2075     texturedspenc
2076     tpeldsp
2077     vc1dsp
2078     videodsp
2079     vp3dsp
2080     vp56dsp
2081     vp8dsp
2082     vt_bt2020
2083     wma_freqs
2084     wmv2dsp
2085 "
2086
2087 CMDLINE_SELECT="
2088     $ARCH_EXT_LIST
2089     $CONFIG_LIST
2090     $HAVE_LIST_CMDLINE
2091     $THREADS_LIST
2092     asm
2093     cross_compile
2094     debug
2095     extra_warnings
2096     logging
2097     lto
2098     optimizations
2099     rpath
2100     stripping
2101 "
2102
2103 PATHS_LIST="
2104     bindir
2105     datadir
2106     docdir
2107     incdir
2108     libdir
2109     mandir
2110     pkgconfigdir
2111     prefix
2112     shlibdir
2113     install_name_dir
2114 "
2115
2116 CMDLINE_SET="
2117     $PATHS_LIST
2118     ar
2119     arch
2120     as
2121     assert_level
2122     build_suffix
2123     cc
2124     objcc
2125     cpu
2126     cross_prefix
2127     custom_allocator
2128     cxx
2129     dep_cc
2130     doxygen
2131     env
2132     extra_version
2133     gas
2134     host_cc
2135     host_cflags
2136     host_ld
2137     host_ldflags
2138     host_libs
2139     host_os
2140     install
2141     ld
2142     ln_s
2143     logfile
2144     malloc_prefix
2145     nm
2146     optflags
2147     pkg_config
2148     pkg_config_flags
2149     progs_suffix
2150     random_seed
2151     ranlib
2152     samples
2153     strip
2154     sws_max_filter_size
2155     sysinclude
2156     sysroot
2157     target_exec
2158     target_os
2159     target_path
2160     target_samples
2161     tempprefix
2162     toolchain
2163     valgrind
2164     yasmexe
2165 "
2166
2167 CMDLINE_APPEND="
2168     extra_cflags
2169     extra_cxxflags
2170     extra_objcflags
2171     host_cppflags
2172 "
2173
2174 # code dependency declarations
2175
2176 # architecture extensions
2177
2178 armv5te_deps="arm"
2179 armv6_deps="arm"
2180 armv6t2_deps="arm"
2181 armv8_deps="aarch64"
2182 neon_deps_any="aarch64 arm"
2183 intrinsics_neon_deps="neon"
2184 vfp_deps_any="aarch64 arm"
2185 vfpv3_deps="vfp"
2186 setend_deps="arm"
2187
2188 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2189
2190 mipsfpu_deps="mips"
2191 mipsdsp_deps="mips"
2192 mipsdspr2_deps="mips"
2193 mips32r2_deps="mips"
2194 mips32r5_deps="mips"
2195 mips32r6_deps="mips"
2196 mips64r2_deps="mips"
2197 mips64r6_deps="mips"
2198 msa_deps="mipsfpu"
2199 mmi_deps="mips"
2200
2201 altivec_deps="ppc"
2202 dcbzl_deps="ppc"
2203 ldbrx_deps="ppc"
2204 ppc4xx_deps="ppc"
2205 vsx_deps="altivec"
2206 power8_deps="vsx"
2207
2208 cpunop_deps="i686"
2209 x86_64_select="i686"
2210 x86_64_suggest="fast_cmov"
2211
2212 amd3dnow_deps="mmx"
2213 amd3dnowext_deps="amd3dnow"
2214 i686_deps="x86"
2215 mmx_deps="x86"
2216 mmxext_deps="mmx"
2217 sse_deps="mmxext"
2218 sse2_deps="sse"
2219 sse3_deps="sse2"
2220 ssse3_deps="sse3"
2221 sse4_deps="ssse3"
2222 sse42_deps="sse4"
2223 aesni_deps="sse42"
2224 avx_deps="sse42"
2225 xop_deps="avx"
2226 fma3_deps="avx"
2227 fma4_deps="avx"
2228 avx2_deps="avx"
2229
2230 mmx_external_deps="yasm"
2231 mmx_inline_deps="inline_asm"
2232 mmx_suggest="mmx_external mmx_inline"
2233
2234 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2235     eval dep=\$${ext}_deps
2236     eval ${ext}_external_deps='"${dep}_external"'
2237     eval ${ext}_inline_deps='"${dep}_inline"'
2238     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2239 done
2240
2241 aligned_stack_if_any="aarch64 ppc x86"
2242 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2243 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2244 fast_unaligned_if_any="aarch64 ppc x86"
2245 simd_align_16_if_any="altivec neon sse"
2246
2247 # system capabilities
2248 symver_if_any="symver_asm_label symver_gnu_asm"
2249 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2250
2251 # threading support
2252 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2253 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2254 atomics_win32_if="MemoryBarrier"
2255 atomics_native_if_any="$ATOMICS_LIST"
2256 w32threads_deps="atomics_native"
2257 threads_if_any="$THREADS_LIST"
2258
2259 # subsystems
2260 dct_select="rdft"
2261 dirac_parse_select="golomb"
2262 error_resilience_select="me_cmp"
2263 faandct_deps="faan fdctdsp"
2264 faanidct_deps="faan idctdsp"
2265 h264dsp_select="startcode"
2266 frame_thread_encoder_deps="encoders threads"
2267 intrax8_select="blockdsp idctdsp"
2268 mdct_select="fft"
2269 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2270 mpeg_er_select="error_resilience"
2271 mpegaudio_select="mpegaudiodsp"
2272 mpegaudiodsp_select="dct"
2273 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2274 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2275 qsvdec_select="qsv"
2276 qsvenc_select="qsv"
2277 vc1dsp_select="h264chroma qpeldsp startcode"
2278 rdft_select="fft"
2279
2280 # decoders / encoders
2281 aac_decoder_select="imdct15 mdct sinewin"
2282 aac_fixed_decoder_select="mdct sinewin"
2283 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2284 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2285 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2286 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2287 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2288 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2289 adpcm_g722_decoder_select="g722dsp"
2290 adpcm_g722_encoder_select="g722dsp"
2291 aic_decoder_select="golomb idctdsp"
2292 alac_encoder_select="lpc"
2293 als_decoder_select="bswapdsp"
2294 amrnb_decoder_select="lsp"
2295 amrwb_decoder_select="lsp"
2296 amv_decoder_select="sp5x_decoder exif"
2297 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2298 ape_decoder_select="bswapdsp llauddsp"
2299 apng_decoder_select="zlib"
2300 apng_encoder_select="huffyuvencdsp zlib"
2301 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2302 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2303 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2304 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2305 atrac1_decoder_select="mdct sinewin"
2306 atrac3_decoder_select="mdct"
2307 atrac3p_decoder_select="mdct sinewin"
2308 avrn_decoder_select="exif jpegtables"
2309 bink_decoder_select="blockdsp hpeldsp"
2310 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2311 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2312 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2313 cllc_decoder_select="bswapdsp"
2314 comfortnoise_encoder_select="lpc"
2315 cook_decoder_select="audiodsp mdct sinewin"
2316 cscd_decoder_select="lzo"
2317 cscd_decoder_suggest="zlib"
2318 dca_decoder_select="mdct"
2319 dds_decoder_select="texturedsp"
2320 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2321 dnxhd_decoder_select="blockdsp idctdsp"
2322 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2323 dvvideo_decoder_select="dvprofile idctdsp"
2324 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2325 dxa_decoder_select="zlib"
2326 dxv_decoder_select="lzf texturedsp"
2327 eac3_decoder_select="ac3_decoder"
2328 eac3_encoder_select="ac3_encoder"
2329 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2330 eatgq_decoder_select="aandcttables"
2331 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2332 exr_decoder_select="zlib"
2333 ffv1_decoder_select="golomb rangecoder"
2334 ffv1_encoder_select="rangecoder"
2335 ffvhuff_decoder_select="huffyuv_decoder"
2336 ffvhuff_encoder_select="huffyuv_encoder"
2337 fic_decoder_select="golomb"
2338 flac_decoder_select="flacdsp golomb"
2339 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2340 flashsv2_decoder_select="zlib"
2341 flashsv2_encoder_select="zlib"
2342 flashsv_decoder_select="zlib"
2343 flashsv_encoder_select="zlib"
2344 flv_decoder_select="h263_decoder"
2345 flv_encoder_select="h263_encoder"
2346 fourxm_decoder_select="blockdsp bswapdsp"
2347 fraps_decoder_select="bswapdsp huffman"
2348 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2349 g729_decoder_select="audiodsp"
2350 h261_decoder_select="mpegvideo"
2351 h261_encoder_select="aandcttables mpegvideoenc"
2352 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2353 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2354 h263i_decoder_select="h263_decoder"
2355 h263p_decoder_select="h263_decoder"
2356 h263p_encoder_select="h263_encoder"
2357 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2358 h264_decoder_suggest="error_resilience"
2359 h264_qsv_decoder_deps="libmfx"
2360 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2361 h264_qsv_encoder_deps="libmfx"
2362 h264_qsv_encoder_select="qsvenc"
2363 hap_decoder_select="snappy texturedsp"
2364 hap_encoder_deps="libsnappy"
2365 hap_encoder_select="texturedspenc"
2366 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2367 hevc_qsv_decoder_deps="libmfx"
2368 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2369 hevc_qsv_encoder_deps="libmfx"
2370 hevc_qsv_encoder_select="qsvenc"
2371 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2372 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2373 iac_decoder_select="imc_decoder"
2374 imc_decoder_select="bswapdsp fft mdct sinewin"
2375 indeo3_decoder_select="hpeldsp"
2376 indeo4_decoder_select="ividsp"
2377 indeo5_decoder_select="ividsp"
2378 interplay_video_decoder_select="hpeldsp"
2379 jpegls_decoder_select="golomb mjpeg_decoder"
2380 jpegls_encoder_select="golomb"
2381 jv_decoder_select="blockdsp"
2382 lagarith_decoder_select="huffyuvdsp"
2383 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2384 loco_decoder_select="golomb"
2385 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2386 metasound_decoder_select="lsp mdct sinewin"
2387 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2388 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2389 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2390 mjpegb_decoder_select="mjpeg_decoder"
2391 mlp_decoder_select="mlp_parser"
2392 motionpixels_decoder_select="bswapdsp"
2393 mp1_decoder_select="mpegaudio"
2394 mp1float_decoder_select="mpegaudio"
2395 mp2_decoder_select="mpegaudio"
2396 mp2float_decoder_select="mpegaudio"
2397 mp3_decoder_select="mpegaudio"
2398 mp3adu_decoder_select="mpegaudio"
2399 mp3adufloat_decoder_select="mpegaudio"
2400 mp3float_decoder_select="mpegaudio"
2401 mp3on4_decoder_select="mpegaudio"
2402 mp3on4float_decoder_select="mpegaudio"
2403 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2404 mpc8_decoder_select="mpegaudiodsp"
2405 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2406 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2407 mpegvideo_decoder_select="mpegvideo"
2408 mpeg1video_decoder_select="mpegvideo"
2409 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2410 mpeg2video_decoder_select="mpegvideo"
2411 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2412 mpeg2_qsv_decoder_deps="libmfx"
2413 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2414 mpeg2_qsv_encoder_deps="libmfx"
2415 mpeg2_qsv_encoder_select="qsvenc"
2416 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2417 mpeg4_encoder_select="h263_encoder"
2418 msa1_decoder_select="mss34dsp"
2419 msmpeg4v1_decoder_select="h263_decoder"
2420 msmpeg4v2_decoder_select="h263_decoder"
2421 msmpeg4v2_encoder_select="h263_encoder"
2422 msmpeg4v3_decoder_select="h263_decoder"
2423 msmpeg4v3_encoder_select="h263_encoder"
2424 mss2_decoder_select="vc1_decoder mpegvideo"
2425 mts2_decoder_select="mss34dsp"
2426 mxpeg_decoder_select="mjpeg_decoder"
2427 nellymoser_decoder_select="mdct sinewin"
2428 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2429 nuv_decoder_select="idctdsp lzo"
2430 on2avc_decoder_select="mdct"
2431 opus_decoder_deps="swresample"
2432 opus_decoder_select="imdct15"
2433 png_decoder_select="zlib"
2434 png_encoder_select="huffyuvencdsp zlib"
2435 prores_decoder_select="blockdsp idctdsp"
2436 prores_encoder_select="fdctdsp"
2437 qcelp_decoder_select="lsp"
2438 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2439 ra_144_decoder_select="audiodsp"
2440 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2441 ralf_decoder_select="golomb"
2442 rawvideo_decoder_select="bswapdsp"
2443 rscc_decoder_select="zlib"
2444 rtjpeg_decoder_select="me_cmp"
2445 rv10_decoder_select="h263_decoder"
2446 rv10_encoder_select="h263_encoder"
2447 rv20_decoder_select="h263_decoder"
2448 rv20_encoder_select="h263_encoder"
2449 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2450 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2451 screenpresso_decoder_select="zlib"
2452 shorten_decoder_select="golomb"
2453 sipr_decoder_select="lsp"
2454 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2455 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2456 sonic_decoder_select="golomb rangecoder"
2457 sonic_encoder_select="golomb rangecoder"
2458 sonic_ls_encoder_select="golomb rangecoder"
2459 sp5x_decoder_select="mjpeg_decoder"
2460 svq1_decoder_select="hpeldsp"
2461 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2462 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2463 svq3_decoder_suggest="zlib"
2464 tak_decoder_select="audiodsp"
2465 tdsc_decoder_select="zlib mjpeg_decoder"
2466 theora_decoder_select="vp3_decoder"
2467 thp_decoder_select="mjpeg_decoder"
2468 tiff_decoder_suggest="zlib lzma"
2469 tiff_encoder_suggest="zlib"
2470 truehd_decoder_select="mlp_parser"
2471 truemotion2_decoder_select="bswapdsp"
2472 truespeech_decoder_select="bswapdsp"
2473 tscc_decoder_select="zlib"
2474 twinvq_decoder_select="mdct lsp sinewin"
2475 txd_decoder_select="texturedsp"
2476 utvideo_decoder_select="bswapdsp"
2477 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2478 vble_decoder_select="huffyuvdsp"
2479 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2480 vc1_qsv_decoder_deps="libmfx"
2481 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2482 vc1image_decoder_select="vc1_decoder"
2483 vorbis_decoder_select="mdct"
2484 vorbis_encoder_select="mdct"
2485 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2486 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2487 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2488 vp6a_decoder_select="vp6_decoder"
2489 vp6f_decoder_select="vp6_decoder"
2490 vp7_decoder_select="h264pred videodsp vp8dsp"
2491 vp8_decoder_select="h264pred videodsp vp8dsp"
2492 vp9_decoder_select="videodsp vp9_parser"
2493 webp_decoder_select="vp8_decoder exif"
2494 wmalossless_decoder_select="llauddsp"
2495 wmapro_decoder_select="mdct sinewin wma_freqs"
2496 wmav1_decoder_select="mdct sinewin wma_freqs"
2497 wmav1_encoder_select="mdct sinewin wma_freqs"
2498 wmav2_decoder_select="mdct sinewin wma_freqs"
2499 wmav2_encoder_select="mdct sinewin wma_freqs"
2500 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2501 wmv1_decoder_select="h263_decoder"
2502 wmv1_encoder_select="h263_encoder"
2503 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2504 wmv2_encoder_select="h263_encoder wmv2dsp"
2505 wmv3_decoder_select="vc1_decoder"
2506 wmv3image_decoder_select="wmv3_decoder"
2507 xma1_decoder_select="wmapro_decoder"
2508 xma2_decoder_select="wmapro_decoder"
2509 zerocodec_decoder_select="zlib"
2510 zlib_decoder_select="zlib"
2511 zlib_encoder_select="zlib"
2512 zmbv_decoder_select="zlib"
2513 zmbv_encoder_select="zlib"
2514
2515 # platform codecs
2516 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2517 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2518
2519 # hardware accelerators
2520 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2521 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2522 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2523 vaapi_deps="va_va_h"
2524 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2525 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2526 vda_deps="vda_framework pthreads"
2527 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2528 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2529 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2530 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2531 xvmc_deps="X11_extensions_XvMClib_h"
2532
2533 h263_vaapi_hwaccel_deps="vaapi"
2534 h263_vaapi_hwaccel_select="h263_decoder"
2535 h263_videotoolbox_hwaccel_deps="videotoolbox"
2536 h263_videotoolbox_hwaccel_select="h263_decoder"
2537 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2538 h264_d3d11va_hwaccel_deps="d3d11va"
2539 h264_d3d11va_hwaccel_select="h264_decoder"
2540 h264_dxva2_hwaccel_deps="dxva2"
2541 h264_dxva2_hwaccel_select="h264_decoder"
2542 h264_mediacodec_decoder_deps="mediacodec"
2543 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2544 h264_mmal_decoder_deps="mmal"
2545 h264_mmal_decoder_select="mmal"
2546 h264_mmal_hwaccel_deps="mmal"
2547 h264_qsv_hwaccel_deps="libmfx"
2548 h264_vaapi_hwaccel_deps="vaapi"
2549 h264_vaapi_hwaccel_select="h264_decoder"
2550 h264_vda_decoder_deps="vda"
2551 h264_vda_decoder_select="h264_decoder"
2552 h264_vda_hwaccel_deps="vda"
2553 h264_vda_hwaccel_select="h264_decoder"
2554 h264_vda_old_hwaccel_deps="vda"
2555 h264_vda_old_hwaccel_select="h264_decoder"
2556 h264_vdpau_decoder_deps="vdpau"
2557 h264_vdpau_decoder_select="h264_decoder"
2558 h264_vdpau_hwaccel_deps="vdpau"
2559 h264_vdpau_hwaccel_select="h264_decoder"
2560 h264_videotoolbox_hwaccel_deps="videotoolbox"
2561 h264_videotoolbox_hwaccel_select="h264_decoder"
2562 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2563 hevc_d3d11va_hwaccel_select="hevc_decoder"
2564 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2565 hevc_dxva2_hwaccel_select="hevc_decoder"
2566 hevc_qsv_hwaccel_deps="libmfx"
2567 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2568 hevc_vaapi_hwaccel_select="hevc_decoder"
2569 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2570 hevc_vdpau_hwaccel_select="hevc_decoder"
2571 mpeg_vdpau_decoder_deps="vdpau"
2572 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2573 mpeg_xvmc_hwaccel_deps="xvmc"
2574 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2575 mpeg1_vdpau_decoder_deps="vdpau"
2576 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2577 mpeg1_vdpau_hwaccel_deps="vdpau"
2578 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2579 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2580 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2581 mpeg1_xvmc_hwaccel_deps="xvmc"
2582 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2583 mpeg2_crystalhd_decoder_select="crystalhd"
2584 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2585 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2586 mpeg2_dxva2_hwaccel_deps="dxva2"
2587 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2588 mpeg2_mmal_decoder_deps="mmal"
2589 mpeg2_mmal_decoder_select="mmal"
2590 mpeg2_mmal_hwaccel_deps="mmal"
2591 mpeg2_qsv_hwaccel_deps="libmfx"
2592 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2593 mpeg2_vaapi_hwaccel_deps="vaapi"
2594 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2595 mpeg2_vdpau_hwaccel_deps="vdpau"
2596 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2597 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2598 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2599 mpeg2_xvmc_hwaccel_deps="xvmc"
2600 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2601 mpeg4_crystalhd_decoder_select="crystalhd"
2602 mpeg4_mmal_decoder_deps="mmal"
2603 mpeg4_mmal_decoder_select="mmal"
2604 mpeg4_mmal_hwaccel_deps="mmal"
2605 mpeg4_vaapi_hwaccel_deps="vaapi"
2606 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2607 mpeg4_vdpau_decoder_deps="vdpau"
2608 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2609 mpeg4_vdpau_hwaccel_deps="vdpau"
2610 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2611 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2612 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2613 msmpeg4_crystalhd_decoder_select="crystalhd"
2614 vc1_crystalhd_decoder_select="crystalhd"
2615 vc1_d3d11va_hwaccel_deps="d3d11va"
2616 vc1_d3d11va_hwaccel_select="vc1_decoder"
2617 vc1_dxva2_hwaccel_deps="dxva2"
2618 vc1_dxva2_hwaccel_select="vc1_decoder"
2619 vc1_mmal_decoder_deps="mmal"
2620 vc1_mmal_decoder_select="mmal"
2621 vc1_mmal_hwaccel_deps="mmal"
2622 vc1_qsv_hwaccel_deps="libmfx"
2623 vc1_qsv_hwaccel_select="qsvdec_vc1"
2624 vc1_vaapi_hwaccel_deps="vaapi"
2625 vc1_vaapi_hwaccel_select="vc1_decoder"
2626 vc1_vdpau_decoder_deps="vdpau"
2627 vc1_vdpau_decoder_select="vc1_decoder"
2628 vc1_vdpau_hwaccel_deps="vdpau"
2629 vc1_vdpau_hwaccel_select="vc1_decoder"
2630 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2631 vp9_d3d11va_hwaccel_select="vp9_decoder"
2632 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2633 vp9_dxva2_hwaccel_select="vp9_decoder"
2634 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2635 vp9_vaapi_hwaccel_select="vp9_decoder"
2636 wmv3_crystalhd_decoder_select="crystalhd"
2637 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2638 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2639 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2640 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2641 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2642
2643 # parsers
2644 h264_parser_select="h264_decoder"
2645 hevc_parser_select="golomb"
2646 mpegvideo_parser_select="mpegvideo"
2647 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2648 vc1_parser_select="vc1dsp"
2649
2650 # bitstream_filters
2651 mjpeg2jpeg_bsf_select="jpegtables"
2652
2653 # external libraries
2654 aac_at_decoder_deps="audiotoolbox"
2655 ac3_at_decoder_deps="audiotoolbox"
2656 ac3_at_decoder_select="ac3_parser"
2657 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2658 alac_at_decoder_deps="audiotoolbox"
2659 amr_nb_at_decoder_deps="audiotoolbox"
2660 eac3_at_decoder_deps="audiotoolbox"
2661 eac3_at_decoder_select="ac3_parser"
2662 gsm_ms_at_decoder_deps="audiotoolbox"
2663 ilbc_at_decoder_deps="audiotoolbox"
2664 mp1_at_decoder_deps="audiotoolbox"
2665 mp2_at_decoder_deps="audiotoolbox"
2666 mp3_at_decoder_deps="audiotoolbox"
2667 pcm_alaw_at_decoder_deps="audiotoolbox"
2668 pcm_mulaw_at_decoder_deps="audiotoolbox"
2669 qdmc_at_decoder_deps="audiotoolbox"
2670 qdm2_at_decoder_deps="audiotoolbox"
2671 aac_at_encoder_deps="audiotoolbox"
2672 aac_at_encoder_select="audio_frame_queue"
2673 alac_at_encoder_deps="audiotoolbox"
2674 alac_at_encoder_select="audio_frame_queue"
2675 ilbc_at_encoder_deps="audiotoolbox"
2676 ilbc_at_encoder_select="audio_frame_queue"
2677 pcm_alaw_at_encoder_deps="audiotoolbox"
2678 pcm_alaw_at_encoder_select="audio_frame_queue"
2679 pcm_mulaw_at_encoder_deps="audiotoolbox"
2680 pcm_mulaw_at_encoder_select="audio_frame_queue"
2681 chromaprint_muxer_deps="chromaprint"
2682 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2683 libcelt_decoder_deps="libcelt"
2684 libfaac_encoder_deps="libfaac"
2685 libfaac_encoder_select="audio_frame_queue"
2686 libfdk_aac_decoder_deps="libfdk_aac"
2687 libfdk_aac_encoder_deps="libfdk_aac"
2688 libfdk_aac_encoder_select="audio_frame_queue"
2689 libgme_demuxer_deps="libgme"
2690 libgsm_decoder_deps="libgsm"
2691 libgsm_encoder_deps="libgsm"
2692 libgsm_ms_decoder_deps="libgsm"
2693 libgsm_ms_encoder_deps="libgsm"
2694 libilbc_decoder_deps="libilbc"
2695 libilbc_encoder_deps="libilbc"
2696 libkvazaar_encoder_deps="libkvazaar"
2697 libmodplug_demuxer_deps="libmodplug"
2698 libmp3lame_encoder_deps="libmp3lame"
2699 libmp3lame_encoder_select="audio_frame_queue"
2700 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2701 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2702 libopencore_amrnb_encoder_select="audio_frame_queue"
2703 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2704 libopenh264_encoder_deps="libopenh264"
2705 libopenjpeg_decoder_deps="libopenjpeg"
2706 libopenjpeg_encoder_deps="libopenjpeg"
2707 libopus_decoder_deps="libopus"
2708 libopus_encoder_deps="libopus"
2709 libopus_encoder_select="audio_frame_queue"
2710 libschroedinger_decoder_deps="libschroedinger"
2711 libschroedinger_encoder_deps="libschroedinger"
2712 libshine_encoder_deps="libshine"
2713 libshine_encoder_select="audio_frame_queue"
2714 libspeex_decoder_deps="libspeex"
2715 libspeex_encoder_deps="libspeex"
2716 libspeex_encoder_select="audio_frame_queue"
2717 libtheora_encoder_deps="libtheora"
2718 libtwolame_encoder_deps="libtwolame"
2719 libutvideo_decoder_deps="libutvideo"
2720 libutvideo_encoder_deps="libutvideo"
2721 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2722 libvorbis_decoder_deps="libvorbis"
2723 libvorbis_encoder_deps="libvorbis"
2724 libvorbis_encoder_select="audio_frame_queue"
2725 libvpx_vp8_decoder_deps="libvpx"
2726 libvpx_vp8_encoder_deps="libvpx"
2727 libvpx_vp9_decoder_deps="libvpx"
2728 libvpx_vp9_encoder_deps="libvpx"
2729 libwavpack_encoder_deps="libwavpack"
2730 libwebp_encoder_deps="libwebp"
2731 libwebp_anim_encoder_deps="libwebp"
2732 libx262_encoder_deps="libx262"
2733 libx264_encoder_deps="libx264"
2734 libx264rgb_encoder_deps="libx264"
2735 libx264rgb_encoder_select="libx264_encoder"
2736 libx265_encoder_deps="libx265"
2737 libxavs_encoder_deps="libxavs"
2738 libxvid_encoder_deps="libxvid"
2739 libzvbi_teletext_decoder_deps="libzvbi"
2740 nvenc_encoder_deps="nvenc"
2741 nvenc_h264_encoder_deps="nvenc"
2742 nvenc_hevc_encoder_deps="nvenc"
2743 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2744 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2745 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2746 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2747 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2748
2749 # demuxers / muxers
2750 ac3_demuxer_select="ac3_parser"
2751 asf_demuxer_select="riffdec"
2752 asf_o_demuxer_select="riffdec"
2753 asf_muxer_select="riffenc"
2754 asf_stream_muxer_select="asf_muxer"
2755 avi_demuxer_select="iso_media riffdec exif"
2756 avi_muxer_select="riffenc"
2757 avisynth_demuxer_deps="avisynth"
2758 avisynth_demuxer_select="riffdec"
2759 caf_demuxer_select="iso_media riffdec"
2760 dash_muxer_select="mp4_muxer"
2761 dirac_demuxer_select="dirac_parser"
2762 dts_demuxer_select="dca_parser"
2763 dtshd_demuxer_select="dca_parser"
2764 dv_demuxer_select="dvprofile"
2765 dv_muxer_select="dvprofile"
2766 dxa_demuxer_select="riffdec"
2767 eac3_demuxer_select="ac3_parser"
2768 f4v_muxer_select="mov_muxer"
2769 flac_demuxer_select="flac_parser"
2770 hds_muxer_select="flv_muxer"
2771 hls_muxer_select="mpegts_muxer"
2772 image2_alias_pix_demuxer_select="image2_demuxer"
2773 image2_brender_pix_demuxer_select="image2_demuxer"
2774 ipod_muxer_select="mov_muxer"
2775 ismv_muxer_select="mov_muxer"
2776 libnut_demuxer_deps="libnut"
2777 libnut_muxer_deps="libnut"
2778 matroska_audio_muxer_select="matroska_muxer"
2779 matroska_demuxer_select="iso_media riffdec"
2780 matroska_demuxer_suggest="bzlib lzo zlib"
2781 matroska_muxer_select="iso_media riffenc"
2782 mmf_muxer_select="riffenc"
2783 mov_demuxer_select="iso_media riffdec"
2784 mov_demuxer_suggest="zlib"
2785 mov_muxer_select="iso_media riffenc rtpenc_chain"
2786 mp3_demuxer_select="mpegaudio_parser"
2787 mp4_muxer_select="mov_muxer"
2788 mpegts_demuxer_select="iso_media"
2789 mpegts_muxer_select="adts_muxer latm_muxer"
2790 mpegtsraw_demuxer_select="mpegts_demuxer"
2791 mxf_d10_muxer_select="mxf_muxer"
2792 mxf_opatom_muxer_select="mxf_muxer"
2793 nut_muxer_select="riffenc"
2794 nuv_demuxer_select="riffdec"
2795 oga_muxer_select="ogg_muxer"
2796 ogg_demuxer_select="dirac_parse"
2797 opus_muxer_select="ogg_muxer"
2798 psp_muxer_select="mov_muxer"
2799 rtp_demuxer_select="sdp_demuxer"
2800 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2801 rtsp_demuxer_select="http_protocol rtpdec"
2802 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2803 sap_demuxer_select="sdp_demuxer"
2804 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2805 sdp_demuxer_select="rtpdec"
2806 smoothstreaming_muxer_select="ismv_muxer"
2807 spdif_muxer_select="aac_parser"
2808 spx_muxer_select="ogg_muxer"
2809 swf_demuxer_suggest="zlib"
2810 tak_demuxer_select="tak_parser"
2811 tg2_muxer_select="mov_muxer"
2812 tgp_muxer_select="mov_muxer"
2813 vobsub_demuxer_select="mpegps_demuxer"
2814 w64_demuxer_select="wav_demuxer"
2815 w64_muxer_select="wav_muxer"
2816 wav_demuxer_select="riffdec"
2817 wav_muxer_select="riffenc"
2818 webm_muxer_select="iso_media riffenc"
2819 webm_dash_manifest_demuxer_select="matroska_demuxer"
2820 wtv_demuxer_select="mpegts_demuxer riffdec"
2821 wtv_muxer_select="mpegts_muxer riffenc"
2822 xmv_demuxer_select="riffdec"
2823 xwma_demuxer_select="riffdec"
2824
2825 # indevs / outdevs
2826 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2827 alsa_outdev_deps="alsa_asoundlib_h"
2828 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2829 avfoundation_indev_select="avfoundation"
2830 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2831 caca_outdev_deps="libcaca"
2832 decklink_indev_deps="decklink pthreads"
2833 decklink_indev_extralibs="-lstdc++"
2834 decklink_outdev_deps="decklink pthreads"
2835 decklink_outdev_extralibs="-lstdc++"
2836 dshow_indev_deps="IBaseFilter"
2837 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2838 dv1394_indev_deps="dv1394"
2839 dv1394_indev_select="dv_demuxer"
2840 fbdev_indev_deps="linux_fb_h"
2841 fbdev_outdev_deps="linux_fb_h"
2842 gdigrab_indev_deps="CreateDIBSection"
2843 gdigrab_indev_extralibs="-lgdi32"
2844 gdigrab_indev_select="bmp_decoder"
2845 iec61883_indev_deps="libiec61883"
2846 jack_indev_deps="jack_jack_h"
2847 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2848 lavfi_indev_deps="avfilter"
2849 libcdio_indev_deps="libcdio"
2850 libdc1394_indev_deps="libdc1394"
2851 libv4l2_indev_deps="libv4l2"
2852 openal_indev_deps="openal"
2853 opengl_outdev_deps="opengl"
2854 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2855 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2856 pulse_indev_deps="libpulse"
2857 pulse_outdev_deps="libpulse"
2858 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2859 qtkit_indev_select="qtkit"
2860 sdl_outdev_deps="sdl"
2861 sndio_indev_deps="sndio_h"
2862 sndio_outdev_deps="sndio_h"
2863 v4l_indev_deps="linux_videodev_h"
2864 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2865 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2866 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2867 vfwcap_indev_extralibs="-lavicap32"
2868 x11grab_indev_deps="x11grab"
2869 x11grab_xcb_indev_deps="libxcb"
2870 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2871 xv_outdev_extralibs="-lXv -lX11 -lXext"
2872
2873 # protocols
2874 async_protocol_deps="threads"
2875 bluray_protocol_deps="libbluray"
2876 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2877 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2878 ffrtmpcrypt_protocol_select="tcp_protocol"
2879 ffrtmphttp_protocol_deps="!librtmp_protocol"
2880 ffrtmphttp_protocol_select="http_protocol"
2881 ftp_protocol_select="tcp_protocol"
2882 gopher_protocol_select="network"
2883 http_protocol_select="tcp_protocol"
2884 httpproxy_protocol_select="tcp_protocol"
2885 https_protocol_select="tls_protocol"
2886 icecast_protocol_select="http_protocol"
2887 librtmp_protocol_deps="librtmp"
2888 librtmpe_protocol_deps="librtmp"
2889 librtmps_protocol_deps="librtmp"
2890 librtmpt_protocol_deps="librtmp"
2891 librtmpte_protocol_deps="librtmp"
2892 libsmbclient_protocol_deps="libsmbclient gplv3"
2893 libssh_protocol_deps="libssh"
2894 mmsh_protocol_select="http_protocol"
2895 mmst_protocol_select="network"
2896 rtmp_protocol_deps="!librtmp_protocol"
2897 rtmp_protocol_select="tcp_protocol"
2898 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2899 rtmps_protocol_deps="!librtmp_protocol"
2900 rtmps_protocol_select="tls_protocol"
2901 rtmpt_protocol_select="ffrtmphttp_protocol"
2902 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2903 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2904 rtp_protocol_select="udp_protocol"
2905 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2906 sctp_protocol_select="network"
2907 srtp_protocol_select="rtp_protocol srtp"
2908 tcp_protocol_select="network"
2909 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2910 tls_gnutls_protocol_select="tcp_protocol"
2911 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2912 tls_openssl_protocol_select="tcp_protocol"
2913 tls_schannel_protocol_deps="schannel"
2914 tls_schannel_protocol_select="tcp_protocol"
2915 tls_securetransport_protocol_deps="securetransport"
2916 tls_securetransport_protocol_select="tcp_protocol"
2917 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2918 udp_protocol_select="network"
2919 udplite_protocol_select="network"
2920 unix_protocol_deps="sys_un_h"
2921 unix_protocol_select="network"
2922
2923 # filters
2924 afftfilt_filter_deps="avcodec"
2925 afftfilt_filter_select="fft"
2926 amovie_filter_deps="avcodec avformat"
2927 aresample_filter_deps="swresample"
2928 ass_filter_deps="libass"
2929 asyncts_filter_deps="avresample"
2930 atempo_filter_deps="avcodec"
2931 atempo_filter_select="rdft"
2932 azmq_filter_deps="libzmq"
2933 blackframe_filter_deps="gpl"
2934 boxblur_filter_deps="gpl"
2935 bs2b_filter_deps="libbs2b"
2936 colormatrix_filter_deps="gpl"
2937 cover_rect_filter_deps="avcodec avformat gpl"
2938 cropdetect_filter_deps="gpl"
2939 delogo_filter_deps="gpl"
2940 deshake_filter_select="pixelutils"
2941 drawtext_filter_deps="libfreetype"
2942 ebur128_filter_deps="gpl"
2943 eq_filter_deps="gpl"
2944 fftfilt_filter_deps="avcodec"
2945 fftfilt_filter_select="rdft"
2946 find_rect_filter_deps="avcodec avformat gpl"
2947 firequalizer_filter_deps="avcodec"
2948 firequalizer_filter_select="rdft"
2949 flite_filter_deps="libflite"
2950 framerate_filter_select="pixelutils"
2951 frei0r_filter_deps="frei0r dlopen"
2952 frei0r_src_filter_deps="frei0r dlopen"
2953 fspp_filter_deps="gpl"
2954 geq_filter_deps="gpl"
2955 histeq_filter_deps="gpl"
2956 hqdn3d_filter_deps="gpl"
2957 hwupload_cuda_filter_deps="cuda"
2958 interlace_filter_deps="gpl"
2959 kerndeint_filter_deps="gpl"
2960 ladspa_filter_deps="ladspa dlopen"
2961 mcdeint_filter_deps="avcodec gpl"
2962 movie_filter_deps="avcodec avformat"
2963 mpdecimate_filter_deps="gpl"
2964 mpdecimate_filter_select="pixelutils"
2965 mptestsrc_filter_deps="gpl"
2966 negate_filter_deps="lut_filter"
2967 nnedi_filter_deps="gpl"
2968 ocr_filter_deps="libtesseract"
2969 ocv_filter_deps="libopencv"
2970 owdenoise_filter_deps="gpl"
2971 pan_filter_deps="swresample"
2972 perspective_filter_deps="gpl"
2973 phase_filter_deps="gpl"
2974 pp7_filter_deps="gpl"
2975 pp_filter_deps="gpl postproc"
2976 pullup_filter_deps="gpl"
2977 removelogo_filter_deps="avcodec avformat swscale"
2978 repeatfields_filter_deps="gpl"
2979 resample_filter_deps="avresample"
2980 rubberband_filter_deps="librubberband"
2981 sab_filter_deps="gpl swscale"
2982 scale2ref_filter_deps="swscale"
2983 scale_filter_deps="swscale"
2984 select_filter_select="pixelutils"
2985 showcqt_filter_deps="avcodec avformat swscale"
2986 showcqt_filter_select="fft"
2987 showfreqs_filter_deps="avcodec"
2988 showfreqs_filter_select="fft"
2989 showspectrum_filter_deps="avcodec"
2990 showspectrum_filter_select="fft"
2991 showspectrumpic_filter_deps="avcodec"
2992 showspectrumpic_filter_select="fft"
2993 smartblur_filter_deps="gpl swscale"
2994 sofalizer_filter_deps="netcdf avcodec"
2995 sofalizer_filter_select="fft"
2996 spectrumsynth_filter_deps="avcodec"
2997 spectrumsynth_filter_select="fft"
2998 spp_filter_deps="gpl avcodec"
2999 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3000 stereo3d_filter_deps="gpl"
3001 subtitles_filter_deps="avformat avcodec libass"
3002 super2xsai_filter_deps="gpl"
3003 pixfmts_super2xsai_test_deps="super2xsai_filter"
3004 tinterlace_filter_deps="gpl"
3005 tinterlace_merge_test_deps="tinterlace_filter"
3006 tinterlace_pad_test_deps="tinterlace_filter"
3007 uspp_filter_deps="gpl avcodec"
3008 vidstabdetect_filter_deps="libvidstab"
3009 vidstabtransform_filter_deps="libvidstab"
3010 zmq_filter_deps="libzmq"
3011 zoompan_filter_deps="swscale"
3012 zscale_filter_deps="libzimg"
3013 scale_npp_filter_deps="cuda libnpp"
3014 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3015
3016 # examples
3017 avcodec_example_deps="avcodec avutil"
3018 avio_dir_cmd="avformat avutil"
3019 avio_reading="avformat avcodec avutil"
3020 decoding_encoding_example_deps="avcodec avformat avutil"
3021 demuxing_decoding_example_deps="avcodec avformat avutil"
3022 extract_mvs_example_deps="avcodec avformat avutil"
3023 filter_audio_example_deps="avfilter avutil"
3024 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3025 filtering_video_example_deps="avfilter avcodec avformat avutil"
3026 metadata_example_deps="avformat avutil"
3027 muxing_example_deps="avcodec avformat avutil swscale"
3028 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3029 remuxing_example_deps="avcodec avformat avutil"
3030 resampling_audio_example_deps="avutil swresample"
3031 scaling_video_example_deps="avutil swscale"
3032 transcode_aac_example_deps="avcodec avformat swresample"
3033 transcoding_example_deps="avfilter avcodec avformat avutil"
3034
3035 # libraries, in linking order
3036 avcodec_deps="avutil"
3037 avdevice_deps="avformat avcodec avutil"
3038 avfilter_deps="avutil"
3039 avformat_deps="avcodec avutil"
3040 avresample_deps="avutil"
3041 postproc_deps="avutil gpl"
3042 swresample_deps="avutil"
3043 swscale_deps="avutil"
3044
3045 # programs
3046 ffmpeg_deps="avcodec avfilter avformat swresample"
3047 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3048                null_filter
3049                setpts_filter trim_filter"
3050 ffplay_deps="avcodec avformat swscale swresample sdl"
3051 ffplay_libs='$sdl_libs'
3052 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3053 ffprobe_deps="avcodec avformat"
3054 ffserver_deps="avformat fork sarestart"
3055 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3056
3057 # documentation
3058 podpages_deps="perl"
3059 manpages_deps="perl pod2man"
3060 htmlpages_deps="perl"
3061 htmlpages_deps_any="makeinfo_html texi2html"
3062 txtpages_deps="perl makeinfo"
3063 doc_deps_any="manpages htmlpages podpages txtpages"
3064
3065 # default parameters
3066
3067 logfile="config.log"
3068
3069 # installation paths
3070 prefix_default="/usr/local"
3071 bindir_default='${prefix}/bin'
3072 datadir_default='${prefix}/share/ffmpeg'
3073 docdir_default='${prefix}/share/doc/ffmpeg'
3074 incdir_default='${prefix}/include'
3075 libdir_default='${prefix}/lib'
3076 mandir_default='${prefix}/share/man'
3077
3078 # toolchain
3079 ar_default="ar"
3080 cc_default="gcc"
3081 cxx_default="g++"
3082 host_cc_default="gcc"
3083 cp_f="cp -f"
3084 doxygen_default="doxygen"
3085 install="install"
3086 ln_s_default="ln -s -f"
3087 nm_default="nm -g"
3088 objformat="elf"
3089 pkg_config_default=pkg-config
3090 ranlib_default="ranlib"
3091 strip_default="strip"
3092 yasmexe_default="yasm"
3093 windres_default="windres"
3094
3095 # OS
3096 target_os_default=$(tolower $(uname -s))
3097 host_os=$target_os_default
3098
3099 # machine
3100 if test "$target_os_default" = aix; then
3101     arch_default=$(uname -p)
3102     strip_default="strip -X32_64"
3103 else
3104     arch_default=$(uname -m)
3105 fi
3106 cpu="generic"
3107 intrinsics="none"
3108
3109 # configurable options
3110 enable $PROGRAM_LIST
3111 enable $DOCUMENT_LIST
3112 enable $EXAMPLE_LIST
3113 enable $(filter_out avresample $LIBRARY_LIST)
3114 enable stripping
3115
3116 enable asm
3117 enable debug
3118 enable doc
3119 enable faan faandct faanidct
3120 enable optimizations
3121 enable runtime_cpudetect
3122 enable safe_bitstream_reader
3123 enable static
3124 enable swscale_alpha
3125 enable valgrind_backtrace
3126
3127 sws_max_filter_size_default=256
3128 set_default sws_max_filter_size
3129
3130 # Enable platform codecs by default.
3131 enable audiotoolbox
3132
3133 # Enable hwaccels by default.
3134 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3135 enable xlib
3136
3137 enable vda_framework videotoolbox videotoolbox_encoder
3138
3139 # build settings
3140 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3141 LIBPREF="lib"
3142 LIBSUF=".a"
3143 FULLNAME='$(NAME)$(BUILDSUF)'
3144 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3145 SLIBPREF="lib"
3146 SLIBSUF=".so"
3147 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3148 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3149 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3150 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3151 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3152 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3153
3154 asflags_filter=echo
3155 cflags_filter=echo
3156 ldflags_filter=echo
3157
3158 AS_C='-c'
3159 AS_O='-o $@'
3160 CC_C='-c'
3161 CC_E='-E -o $@'
3162 CC_O='-o $@'
3163 CXX_C='-c'
3164 CXX_O='-o $@'
3165 OBJCC_C='-c'
3166 OBJCC_E='-E -o $@'
3167 OBJCC_O='-o $@'
3168 LD_O='-o $@'
3169 LD_LIB='-l%'
3170 LD_PATH='-L'
3171 HOSTCC_C='-c'
3172 HOSTCC_E='-E -o $@'
3173 HOSTCC_O='-o $@'
3174 HOSTLD_O='-o $@'
3175
3176 host_libs='-lm'
3177 host_cflags_filter=echo
3178 host_ldflags_filter=echo
3179
3180 target_path='$(CURDIR)'
3181
3182 # since the object filename is not given with the -MM flag, the compiler
3183 # is only able to print the basename, and we must add the path ourselves
3184 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3185 DEPFLAGS='-MM'
3186
3187 # find source path
3188 if test -f configure; then
3189     source_path=.
3190 else
3191     source_path=$(cd $(dirname "$0"); pwd)
3192     case "$source_path" in
3193         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3194     esac
3195     test -e "$source_path/config.h" &&
3196         die "Out of tree builds are impossible with config.h in source dir."
3197 fi
3198
3199 for v in "$@"; do
3200     r=${v#*=}
3201     l=${v%"$r"}
3202     r=$(sh_quote "$r")
3203     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3204 done
3205
3206 find_things(){
3207     thing=$1
3208     pattern=$2
3209     file=$source_path/$3
3210     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3211 }
3212
3213 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3214 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3215 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3216 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3217 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3218 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3219 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3220 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3221 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3222
3223 find_things_extern(){
3224     thing=$1
3225     pattern=$2
3226     file=$source_path/$3
3227     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3228 }
3229
3230 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3231 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3232
3233 ALL_COMPONENTS="
3234     $BSF_LIST
3235     $DECODER_LIST
3236     $DEMUXER_LIST
3237     $ENCODER_LIST
3238     $FILTER_LIST
3239     $HWACCEL_LIST
3240     $INDEV_LIST
3241     $MUXER_LIST
3242     $OUTDEV_LIST
3243     $PARSER_LIST
3244     $PROTOCOL_LIST
3245 "
3246
3247 for n in $COMPONENT_LIST; do
3248     v=$(toupper ${n%s})_LIST
3249     eval enable \$$v
3250     eval ${n}_if_any="\$$v"
3251 done
3252
3253 enable $ARCH_EXT_LIST
3254
3255 die_unknown(){
3256     echo "Unknown option \"$1\"."
3257     echo "See $0 --help for available options."
3258     exit 1
3259 }
3260
3261 print_in_columns() {
3262     cols=$(expr $ncols / 24)
3263     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3264 }
3265
3266 show_list() {
3267     suffix=_$1
3268     shift
3269     echo $* | sed s/$suffix//g | print_in_columns
3270     exit 0
3271 }
3272
3273 rand_list(){
3274     IFS=', '
3275     set -- $*
3276     unset IFS
3277     for thing; do
3278         comp=${thing%:*}
3279         prob=${thing#$comp}
3280         prob=${prob#:}
3281         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3282         echo "prob ${prob:-0.5}"
3283         printf '%s\n' $comp
3284     done
3285 }
3286
3287 do_random(){
3288     action=$1
3289     shift
3290     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3291     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3292 }
3293
3294 for opt do
3295     optval="${opt#*=}"
3296     case "$opt" in
3297         --extra-ldflags=*)
3298             add_ldflags $optval
3299         ;;
3300         --extra-ldexeflags=*)
3301             add_ldexeflags $optval
3302         ;;
3303         --extra-ldlibflags=*)
3304             add_ldlibflags $optval
3305         ;;
3306         --extra-libs=*)
3307             add_extralibs $optval
3308         ;;
3309         --disable-devices)
3310             disable $INDEV_LIST $OUTDEV_LIST
3311         ;;
3312         --enable-debug=*)
3313             debuglevel="$optval"
3314         ;;
3315         --disable-programs)
3316             disable $PROGRAM_LIST
3317         ;;
3318         --disable-everything)
3319             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3320         ;;
3321         --disable-all)
3322             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3323             disable $LIBRARY_LIST $PROGRAM_LIST doc
3324             enable avutil
3325         ;;
3326         --enable-random|--disable-random)
3327             action=${opt%%-random}
3328             do_random ${action#--} $COMPONENT_LIST
3329         ;;
3330         --enable-random=*|--disable-random=*)
3331             action=${opt%%-random=*}
3332             do_random ${action#--} $optval
3333         ;;
3334         --enable-*=*|--disable-*=*)
3335             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3336             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3337             eval list=\$$(toupper $thing)_LIST
3338             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3339             list=$(filter "$name" $list)
3340             [ "$list" = "" ] && warn "Option $opt did not match anything"
3341             $action $list
3342         ;;
3343         --enable-?*|--disable-?*)
3344             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3345             if is_in $option $COMPONENT_LIST; then
3346                 test $action = disable && action=unset
3347                 eval $action \$$(toupper ${option%s})_LIST
3348             elif is_in $option $CMDLINE_SELECT; then
3349                 $action $option
3350             else
3351                 die_unknown $opt
3352             fi
3353         ;;
3354         --list-*)
3355             NAME="${opt#--list-}"
3356             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3357             NAME=${NAME%s}
3358             eval show_list $NAME \$$(toupper $NAME)_LIST
3359         ;;
3360         --help|-h) show_help
3361         ;;
3362         --fatal-warnings) enable fatal_warnings
3363         ;;
3364         *)
3365             optname="${opt%%=*}"
3366             optname="${optname#--}"
3367             optname=$(echo "$optname" | sed 's/-/_/g')
3368             if is_in $optname $CMDLINE_SET; then
3369                 eval $optname='$optval'
3370             elif is_in $optname $CMDLINE_APPEND; then
3371                 append $optname "$optval"
3372             else
3373                 die_unknown $opt
3374             fi
3375         ;;
3376     esac
3377 done
3378
3379 for e in $env; do
3380     eval "export $e"
3381 done
3382
3383 disabled logging && logfile=/dev/null
3384
3385 # Disable all the library-specific components if the library itself
3386 # is disabled, see AVCODEC_LIST and following _LIST variables.
3387
3388 disable_components(){
3389     disabled ${1} && disable $(
3390         eval components="\$$(toupper ${1})_COMPONENTS"
3391         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3392     )
3393 }
3394
3395 map 'disable_components $v' $LIBRARY_LIST
3396
3397 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3398 set >> $logfile
3399
3400 test -n "$valgrind" && toolchain="valgrind-memcheck"
3401
3402 case "$toolchain" in
3403     *-asan)
3404         cc_default="${toolchain%-asan}"
3405         add_cflags  -fsanitize=address
3406         add_ldflags -fsanitize=address
3407     ;;
3408     *-msan)
3409         cc_default="${toolchain%-msan}"
3410         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3411         add_ldflags -fsanitize=memory
3412     ;;
3413     *-tsan)
3414         cc_default="${toolchain%-tsan}"
3415         add_cflags  -fsanitize=thread -pie
3416         add_ldflags -fsanitize=thread -pie
3417         case "$toolchain" in
3418             gcc-tsan)
3419                 add_cflags  -fPIC
3420                 add_ldflags -fPIC
3421                 ;;
3422         esac
3423     ;;
3424     *-usan)
3425         cc_default="${toolchain%-usan}"
3426         add_cflags  -fsanitize=undefined
3427         add_ldflags -fsanitize=undefined
3428     ;;
3429     valgrind-*)
3430         target_exec_default="valgrind"
3431         case "$toolchain" in
3432             valgrind-massif)
3433                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3434                 ;;
3435             valgrind-memcheck)
3436                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3437                 ;;
3438         esac
3439     ;;
3440     msvc)
3441         # Check whether the current MSVC version needs the C99 converter.
3442         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3443         # support enough of C99 to build ffmpeg. Default to the new
3444         # behaviour if the regexp was unable to match anything, since this
3445         # successfully parses the version number of existing supported
3446         # versions that require the converter (MSVC 2010 and 2012).
3447         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3448         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3449             cc_default="cl"
3450         else
3451             cc_default="c99wrap cl"
3452         fi
3453         ld_default="$source_path/compat/windows/mslink"
3454         nm_default="dumpbin -symbols"
3455         ar_default="lib"
3456         case "$arch" in
3457         arm*)
3458             as_default="armasm"
3459             ;;
3460         esac
3461         target_os_default="win32"
3462         # Use a relative path for TMPDIR. This makes sure all the
3463         # ffconf temp files are written with a relative path, avoiding
3464         # issues with msys/win32 path conversion for MSVC parameters
3465         # such as -Fo<file> or -out:<file>.
3466         TMPDIR=.
3467     ;;
3468     icl)
3469         cc_default="icl"
3470         ld_default="xilink"
3471         nm_default="dumpbin -symbols"
3472         ar_default="xilib"
3473         target_os_default="win32"
3474         TMPDIR=.
3475     ;;
3476     gcov)
3477         add_cflags  -fprofile-arcs -ftest-coverage
3478         add_ldflags -fprofile-arcs -ftest-coverage
3479     ;;
3480     llvm-cov)
3481         add_cflags -fprofile-arcs -ftest-coverage
3482         add_ldflags --coverage
3483     ;;
3484     hardened)
3485         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3486         add_cflags   -fno-strict-overflow -fstack-protector-all
3487         add_ldflags  -Wl,-z,relro -Wl,-z,now
3488     ;;
3489     ?*)
3490         die "Unknown toolchain $toolchain"
3491     ;;
3492 esac
3493
3494 test -n "$cross_prefix" && enable cross_compile
3495
3496 if enabled cross_compile; then
3497     test -n "$arch" && test -n "$target_os" ||
3498         die "Must specify target arch and OS when cross-compiling"
3499 fi
3500
3501 ar_default="${cross_prefix}${ar_default}"
3502 cc_default="${cross_prefix}${cc_default}"
3503 cxx_default="${cross_prefix}${cxx_default}"
3504 nm_default="${cross_prefix}${nm_default}"
3505 pkg_config_default="${cross_prefix}${pkg_config_default}"
3506 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3507     ranlib_default="${cross_prefix}${ranlib_default} -D"
3508 else
3509     ranlib_default="${cross_prefix}${ranlib_default}"
3510 fi
3511 strip_default="${cross_prefix}${strip_default}"
3512 windres_default="${cross_prefix}${windres_default}"
3513
3514 sysinclude_default="${sysroot}/usr/include"
3515
3516 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3517     target_exec target_os yasmexe
3518 enabled cross_compile || host_cc_default=$cc
3519 set_default host_cc
3520
3521 pkg_config_fail_message=""
3522 if ! $pkg_config --version >/dev/null 2>&1; then
3523     warn "$pkg_config not found, library detection may fail."
3524     pkg_config=false
3525 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3526     pkg_config_fail_message="
3527 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3528 fi
3529
3530 if test $doxygen != $doxygen_default && \
3531   ! $doxygen --version >/dev/null 2>&1; then
3532     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3533 fi
3534
3535 exesuf() {
3536     case $1 in
3537         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3538     esac
3539 }
3540
3541 EXESUF=$(exesuf $target_os)
3542 HOSTEXESUF=$(exesuf $host_os)
3543
3544 # set temporary file name
3545 : ${TMPDIR:=$TEMPDIR}
3546 : ${TMPDIR:=$TMP}
3547 : ${TMPDIR:=/tmp}
3548
3549 if [ -n "$tempprefix" ] ; then
3550     mktemp(){
3551         echo $tempprefix.${HOSTNAME}.${UID}
3552     }
3553 elif ! check_cmd mktemp -u XXXXXX; then
3554     # simple replacement for missing mktemp
3555     # NOT SAFE FOR GENERAL USE
3556     mktemp(){
3557         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3558     }
3559 fi
3560
3561 tmpfile(){
3562     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3563         (set -C; exec > $tmp) 2>/dev/null ||
3564         die "Unable to create temporary file in $TMPDIR."
3565     append TMPFILES $tmp
3566     eval $1=$tmp
3567 }
3568
3569 trap 'rm -f -- $TMPFILES' EXIT
3570
3571 tmpfile TMPASM .asm
3572 tmpfile TMPC   .c
3573 tmpfile TMPCPP .cpp
3574 tmpfile TMPE   $EXESUF
3575 tmpfile TMPH   .h
3576 tmpfile TMPM   .m
3577 tmpfile TMPO   .o
3578 tmpfile TMPS   .S
3579 tmpfile TMPSH  .sh
3580 tmpfile TMPV   .ver
3581
3582 unset -f mktemp
3583
3584 chmod +x $TMPE
3585
3586 # make sure we can execute files in $TMPDIR
3587 cat > $TMPSH 2>> $logfile <<EOF
3588 #! /bin/sh
3589 EOF
3590 chmod +x $TMPSH >> $logfile 2>&1
3591 if ! $TMPSH >> $logfile 2>&1; then
3592     cat <<EOF
3593 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3594 variable to another directory and make sure that it is not mounted noexec.
3595 EOF
3596     die "Sanity test failed."
3597 fi
3598
3599 armasm_flags(){
3600     for flag; do
3601         case $flag in
3602             # Filter out MSVC cl.exe options from cflags that shouldn't
3603             # be passed to gas-preprocessor
3604             -M[TD]*)                                            ;;
3605             *)                  echo $flag                      ;;
3606         esac
3607    done
3608 }
3609
3610 ccc_flags(){
3611     for flag; do
3612         case $flag in
3613             -std=c99)           echo -c99                       ;;
3614             -mcpu=*)            echo -arch ${flag#*=}           ;;
3615             -mieee)             echo -ieee                      ;;
3616             -O*|-fast)          echo $flag                      ;;
3617             -fno-math-errno)    echo -assume nomath_errno       ;;
3618             -g)                 echo -g3                        ;;
3619             -Wall)              echo -msg_enable level2         ;;
3620             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3621             -Wl,*)              echo $flag                      ;;
3622             -f*|-W*)                                            ;;
3623             *)                  echo $flag                      ;;
3624         esac
3625    done
3626 }
3627
3628 cparser_flags(){
3629     for flag; do
3630         case $flag in
3631             -Wno-switch)             echo -Wno-switch-enum ;;
3632             -Wno-format-zero-length) ;;
3633             -Wdisabled-optimization) ;;
3634             -Wno-pointer-sign)       echo -Wno-other ;;
3635             *)                       echo $flag ;;
3636         esac
3637     done
3638 }
3639
3640 msvc_common_flags(){
3641     for flag; do
3642         case $flag in
3643             # In addition to specifying certain flags under the compiler
3644             # specific filters, they must be specified here as well or else the
3645             # generic catch all at the bottom will print the original flag.
3646             -Wall)                ;;
3647             -std=c99)             ;;
3648             # Common flags
3649             -fomit-frame-pointer) ;;
3650             -g)                   echo -Z7 ;;
3651             -fno-math-errno)      ;;
3652             -fno-common)          ;;
3653             -fno-signed-zeros)    ;;
3654             -fPIC)                ;;
3655             -mthumb)              ;;
3656             -march=*)             ;;
3657             -lz)                  echo zlib.lib ;;
3658             -lavifil32)           echo vfw32.lib ;;
3659             -lavicap32)           echo vfw32.lib user32.lib ;;
3660             -lx264)               echo libx264.lib ;;
3661             -l*)                  echo ${flag#-l}.lib ;;
3662             -LARGEADDRESSAWARE)   echo $flag ;;
3663             -L*)                  echo -libpath:${flag#-L} ;;
3664             *)                    echo $flag ;;
3665         esac
3666     done
3667 }
3668
3669 msvc_flags(){
3670     msvc_common_flags "$@"
3671     for flag; do
3672         case $flag in
3673             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3674                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3675                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3676                                        -wd4307 \
3677                                        -wd4273 -wd4554 -wd4701 ;;
3678         esac
3679     done
3680 }
3681
3682 icl_flags(){
3683     msvc_common_flags "$@"
3684     for flag; do
3685         case $flag in
3686             # Despite what Intel's documentation says -Wall, which is supported
3687             # on Windows, does enable remarks so disable them here.
3688             -Wall)                echo $flag -Qdiag-disable:remark ;;
3689             -std=c99)             echo -Qstd=c99 ;;
3690             -flto)                echo -ipo ;;
3691         esac
3692     done
3693 }
3694
3695 icc_flags(){
3696     for flag; do
3697         case $flag in
3698             -flto)                echo -ipo ;;
3699             *)                    echo $flag ;;
3700         esac
3701     done
3702 }
3703
3704 pgi_flags(){
3705     for flag; do
3706         case $flag in
3707             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3708             -fomit-frame-pointer) echo -Mnoframe ;;
3709             -g)                   echo -gopt ;;
3710             *)                    echo $flag ;;
3711         esac
3712     done
3713 }
3714
3715 suncc_flags(){
3716     for flag; do
3717         case $flag in
3718             -march=*|-mcpu=*)
3719                 case "${flag#*=}" in
3720                     native)                   echo -xtarget=native       ;;
3721                     v9|niagara)               echo -xarch=sparc          ;;
3722                     ultrasparc)               echo -xarch=sparcvis       ;;
3723                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3724                     i586|pentium)             echo -xchip=pentium        ;;
3725                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3726                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3727                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3728                     pentium4*)          echo -xtarget=pentium4           ;;
3729                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3730                     *-sse3)             echo -xarch=sse3                 ;;
3731                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3732                     bonnell)                   echo -xarch=ssse3         ;;
3733                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3734                     westmere)                  echo -xtarget=westmere    ;;
3735                     silvermont)                echo -xarch=sse4_2        ;;
3736                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3737                     core-avx*|ivybridge|haswell|broadwell)
3738                                                echo -xarch=avx           ;;
3739                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3740                     btver1)                    echo -xarch=amdsse4a      ;;
3741                     btver2|bdver*)             echo -xarch=avx           ;;
3742                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3743                     k8|opteron|athlon64|athlon-fx)
3744                                                echo -xarch=sse2a         ;;
3745                     athlon*)                   echo -xarch=pentium_proa  ;;
3746                 esac
3747                 ;;
3748             -std=c99)             echo -xc99              ;;
3749             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3750             -fPIC)                echo -KPIC -xcode=pic32 ;;
3751             -W*,*)                echo $flag              ;;
3752             -f*-*|-W*|-mimpure-text)                      ;;
3753             -shared)              echo -G                 ;;
3754             *)                    echo $flag              ;;
3755         esac
3756     done
3757 }
3758
3759 tms470_flags(){
3760     for flag; do
3761         case $flag in
3762             -march=*|-mcpu=*)
3763                 case "${flag#*=}" in
3764                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3765                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3766                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3767                     armv6*|arm11*)          echo -mv=6   ;;
3768                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3769                                             echo -mv=5e  ;;
3770                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3771                 esac
3772                 ;;
3773             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3774             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3775             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3776             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3777             -msoft-float)   echo --float_support=vfplib       ;;
3778             -O[0-3]|-mf=*)  echo $flag                        ;;
3779             -g)             echo -g -mn                       ;;
3780             -pds=*)         echo $flag                        ;;
3781             -D*|-I*)        echo $flag                        ;;
3782             --gcc|--abi=*)  echo $flag                        ;;
3783             -me)            echo $flag                        ;;
3784         esac
3785     done
3786 }
3787
3788 probe_cc(){
3789     pfx=$1
3790     _cc=$2
3791     first=$3
3792
3793     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3794     unset _ld_o _ldflags _ld_lib _ld_path
3795     unset _depflags _DEPCMD _DEPFLAGS
3796     _flags_filter=echo
3797
3798     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3799         true # no-op to avoid reading stdin in following checks
3800     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3801         _type=llvm_gcc
3802         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3803         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3804         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3805         _cflags_speed='-O3'
3806         _cflags_size='-Os'
3807     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3808         _type=gcc
3809         gcc_version=$($_cc --version | head -n1)
3810         gcc_basever=$($_cc -dumpversion)
3811         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3812         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3813         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3814         case $gcc_basever in
3815             2) ;;
3816             2.*) ;;
3817             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3818         esac
3819         if [ "$first" = true ]; then
3820             case $gcc_basever in
3821                 4.2*)
3822                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3823             esac
3824         fi
3825         _cflags_speed='-O3'
3826         _cflags_size='-Os'
3827     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3828         _type=icc
3829         _ident=$($_cc --version | head -n1)
3830         _depflags='-MMD'
3831         _cflags_speed='-O3'
3832         _cflags_size='-Os'
3833         _cflags_noopt='-O1'
3834         _flags_filter=icc_flags
3835     elif $_cc -v 2>&1 | grep -q xlc; then
3836         _type=xlc
3837         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3838         _cflags_speed='-O5'
3839         _cflags_size='-O5 -qcompact'
3840     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3841         _type=ccc
3842         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3843         _DEPFLAGS='-M'
3844         _cflags_speed='-fast'
3845         _cflags_size='-O1'
3846         _flags_filter=ccc_flags
3847     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3848         test -d "$sysroot" || die "No valid sysroot specified."
3849         _type=armcc
3850         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3851         armcc_conf="$PWD/armcc.conf"
3852         $_cc --arm_linux_configure                 \
3853              --arm_linux_config_file="$armcc_conf" \
3854              --configure_sysroot="$sysroot"        \
3855              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3856              die "Error creating armcc configuration file."
3857         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3858         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3859         as_default="${cross_prefix}gcc"
3860         _depflags='-MMD'
3861         _cflags_speed='-O3'
3862         _cflags_size='-Os'
3863     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3864         _type=tms470
3865         _ident=$($_cc -version | head -n1 | tr -s ' ')
3866         _flags='--gcc --abi=eabi -me'
3867         _cc_e='-ppl -fe=$@'
3868         _cc_o='-fe=$@'
3869         _depflags='-ppa -ppd=$(@:.o=.d)'
3870         _cflags_speed='-O3 -mf=5'
3871         _cflags_size='-O3 -mf=2'
3872         _flags_filter=tms470_flags
3873     elif $_cc -v 2>&1 | grep -q clang; then
3874         _type=clang
3875         _ident=$($_cc --version 2>/dev/null | head -n1)
3876         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3877         _cflags_speed='-O3'
3878         _cflags_size='-Os'
3879     elif $_cc -V 2>&1 | grep -q Sun; then
3880         _type=suncc
3881         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3882         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3883         _DEPFLAGS='-xM1 -xc99'
3884         _ldflags='-std=c99'
3885         _cflags_speed='-O5'
3886         _cflags_size='-O5 -xspace'
3887         _flags_filter=suncc_flags
3888     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3889         _type=pathscale
3890         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3891         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3892         _cflags_speed='-O2'
3893         _cflags_size='-Os'
3894         _flags_filter='filter_out -Wdisabled-optimization'
3895     elif $_cc -v 2>&1 | grep -q Open64; then
3896         _type=open64
3897         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3899         _cflags_speed='-O2'
3900         _cflags_size='-Os'
3901         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3902     elif $_cc -V 2>&1 | grep -q Portland; then
3903         _type=pgi
3904         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3905         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3906         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3907         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3908         _cflags_noopt="-O"
3909         _flags_filter=pgi_flags
3910     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3911         _type=armasm
3912         _ident=$($_cc | head -n1)
3913         # 4509: "This form of conditional instruction is deprecated"
3914         _flags="-nologo -ignore 4509"
3915         _flags_filter=armasm_flags
3916     elif $_cc 2>&1 | grep -q Intel; then
3917         _type=icl
3918         _ident=$($_cc 2>&1 | head -n1)
3919         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3920         # Not only is O3 broken on 13.x+ but it is slower on all previous
3921         # versions (tested) as well.
3922         _cflags_speed="-O2"
3923         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3924         if $_cc 2>&1 | grep -q Linker; then
3925             _ld_o='-out:$@'
3926         else
3927             _ld_o='-Fe$@'
3928         fi
3929         _cc_o='-Fo$@'
3930         _cc_e='-P'
3931         _flags_filter=icl_flags
3932         _ld_lib='lib%.a'
3933         _ld_path='-libpath:'
3934         # -Qdiag-error to make icl error when seeing certain unknown arguments
3935         _flags='-nologo -Qdiag-error:4044,10157'
3936         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3937         # with MSVC which enables it by default.
3938         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3939         disable stripping
3940     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3941         _type=msvc
3942         _ident=$($_cc 2>&1 | head -n1)
3943         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3944         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3945         _cflags_speed="-O2"
3946         _cflags_size="-O1"
3947         if $_cc -nologo- 2>&1 | grep -q Linker; then
3948             _ld_o='-out:$@'
3949         else
3950             _ld_o='-Fe$@'
3951         fi
3952         _cc_o='-Fo$@'
3953         _cc_e='-P -Fi$@'
3954         _flags_filter=msvc_flags
3955         _ld_lib='lib%.a'
3956         _ld_path='-libpath:'
3957         _flags='-nologo'
3958         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3959         disable stripping
3960     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3961         _type=cparser
3962         _ident=$($_cc --version | head -n1)
3963         _depflags='-MMD'
3964         _cflags_speed='-O4'
3965         _cflags_size='-O2'
3966         _flags_filter=cparser_flags
3967     fi
3968
3969     eval ${pfx}_type=\$_type
3970     eval ${pfx}_ident=\$_ident
3971 }
3972
3973 set_ccvars(){
3974     eval ${1}_C=\${_cc_c-\${${1}_C}}
3975     eval ${1}_E=\${_cc_e-\${${1}_E}}
3976     eval ${1}_O=\${_cc_o-\${${1}_O}}
3977
3978     if [ -n "$_depflags" ]; then
3979         eval ${1}_DEPFLAGS=\$_depflags
3980     else
3981         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3982         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3983         eval DEP${1}FLAGS=\$_flags
3984     fi
3985 }
3986
3987 probe_cc cc "$cc" "true"
3988 cflags_filter=$_flags_filter
3989 cflags_speed=$_cflags_speed
3990 cflags_size=$_cflags_size
3991 cflags_noopt=$_cflags_noopt
3992 add_cflags $_flags $_cflags
3993 cc_ldflags=$_ldflags
3994 set_ccvars CC
3995
3996 probe_cc hostcc "$host_cc"
3997 host_cflags_filter=$_flags_filter
3998 add_host_cflags  $_flags $_cflags
3999 set_ccvars HOSTCC
4000
4001 test -n "$cc_type" && enable $cc_type ||
4002     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4003
4004 : ${as_default:=$cc}
4005 : ${objcc_default:=$cc}
4006 : ${dep_cc_default:=$cc}
4007 : ${ld_default:=$cc}
4008 : ${host_ld_default:=$host_cc}
4009 set_default ar as objcc dep_cc ld ln_s host_ld windres
4010
4011 probe_cc as "$as"
4012 asflags_filter=$_flags_filter
4013 add_asflags $_flags $_cflags
4014 set_ccvars AS
4015
4016 probe_cc objcc "$objcc"
4017 objcflags_filter=$_flags_filter
4018 add_objcflags $_flags $_cflags
4019 set_ccvars OBJC
4020
4021 probe_cc ld "$ld"
4022 ldflags_filter=$_flags_filter
4023 add_ldflags $_flags $_ldflags
4024 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4025 LD_O=${_ld_o-$LD_O}
4026 LD_LIB=${_ld_lib-$LD_LIB}
4027 LD_PATH=${_ld_path-$LD_PATH}
4028
4029 probe_cc hostld "$host_ld"
4030 host_ldflags_filter=$_flags_filter
4031 add_host_ldflags $_flags $_ldflags
4032 HOSTLD_O=${_ld_o-$HOSTLD_O}
4033
4034 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4035     probe_cc depcc "$dep_cc"
4036     CCDEP=${_DEPCMD:-$DEPCMD}
4037     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4038     DEPCCFLAGS=$_flags
4039 fi
4040
4041 if $ar 2>&1 | grep -q Microsoft; then
4042     arflags="-nologo"
4043     ar_o='-out:$@'
4044 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4045     arflags="rq"
4046     ar_o='$@'
4047 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4048     arflags='-Xany -r -c'
4049     ar_o='$@'
4050 elif $ar 2>&1 | grep -q "\[D\] "; then
4051     arflags="rcD"
4052     ar_o='$@'
4053 else
4054     arflags="rc"
4055     ar_o='$@'
4056 fi
4057
4058 add_cflags $extra_cflags
4059 add_cxxflags $extra_cxxflags
4060 add_objcflags $extra_objcflags
4061 add_asflags $extra_cflags
4062
4063 if test -n "$sysroot"; then
4064     case "$cc_type" in
4065         gcc|llvm_gcc|clang)
4066             add_cppflags --sysroot="$sysroot"
4067             add_ldflags --sysroot="$sysroot"
4068 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4069             add_cppflags -isysroot "$sysroot"
4070             add_ldflags -isysroot "$sysroot"
4071         ;;
4072         tms470)
4073             add_cppflags -I"$sysinclude"
4074             add_ldflags  --sysroot="$sysroot"
4075         ;;
4076     esac
4077 fi
4078
4079 if test "$cpu" = host; then
4080     enabled cross_compile &&
4081         die "--cpu=host makes no sense when cross-compiling."
4082
4083     case "$cc_type" in
4084         gcc|llvm_gcc)
4085             check_native(){
4086                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4087                 sed -n "/cc1.*$1=/{
4088                             s/.*$1=\\([^ ]*\\).*/\\1/
4089                             p
4090                             q
4091                         }" $TMPE
4092             }
4093             cpu=$(check_native -march || check_native -mcpu)
4094         ;;
4095         clang)
4096             check_native(){
4097                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4098                 sed -n "/cc1.*-target-cpu /{
4099                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4100                             p
4101                             q
4102                         }" $TMPE
4103             }
4104             cpu=$(check_native -march)
4105         ;;
4106     esac
4107
4108     test "${cpu:-host}" = host &&
4109         die "--cpu=host not supported with compiler $cc"
4110 fi
4111
4112 # Deal with common $arch aliases
4113 case "$arch" in
4114     aarch64|arm64)
4115         arch="aarch64"
4116     ;;
4117     arm*|iPad*|iPhone*)
4118         arch="arm"
4119     ;;
4120     mips*|IP*)
4121         case "$arch" in
4122         *el)
4123             add_cppflags -EL
4124             add_ldflags -EL
4125         ;;
4126         *eb)
4127             add_cppflags -EB
4128             add_ldflags -EB
4129         ;;
4130         esac
4131         arch="mips"
4132     ;;
4133     parisc*|hppa*)
4134         arch="parisc"
4135     ;;
4136     "Power Macintosh"|ppc*|powerpc*)
4137         arch="ppc"
4138     ;;
4139     s390|s390x)
4140         arch="s390"
4141     ;;
4142     sh4|sh)
4143         arch="sh4"
4144     ;;
4145     sun4u|sparc*)
4146         arch="sparc"
4147     ;;
4148     tilegx|tile-gx)
4149         arch="tilegx"
4150     ;;
4151     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4152         arch="x86"
4153     ;;
4154 esac
4155
4156 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4157 enable $arch
4158
4159 # Add processor-specific flags
4160 if enabled aarch64; then
4161
4162     case $cpu in
4163         armv*)
4164             cpuflags="-march=$cpu"
4165         ;;
4166         *)
4167             cpuflags="-mcpu=$cpu"
4168         ;;
4169     esac
4170
4171 elif enabled alpha; then
4172
4173     cpuflags="-mcpu=$cpu"
4174
4175 elif enabled arm; then
4176
4177     check_arm_arch() {
4178         check_cpp_condition stddef.h \
4179             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4180             $cpuflags
4181     }
4182
4183     probe_arm_arch() {
4184         if   check_arm_arch 4;        then echo armv4;
4185         elif check_arm_arch 4T;       then echo armv4t;
4186         elif check_arm_arch 5;        then echo armv5;
4187         elif check_arm_arch 5E;       then echo armv5e;
4188         elif check_arm_arch 5T;       then echo armv5t;
4189         elif check_arm_arch 5TE;      then echo armv5te;
4190         elif check_arm_arch 5TEJ;     then echo armv5te;
4191         elif check_arm_arch 6;        then echo armv6;
4192         elif check_arm_arch 6J;       then echo armv6j;
4193         elif check_arm_arch 6K;       then echo armv6k;
4194         elif check_arm_arch 6Z;       then echo armv6z;
4195         elif check_arm_arch 6ZK;      then echo armv6zk;
4196         elif check_arm_arch 6T2;      then echo armv6t2;
4197         elif check_arm_arch 7;        then echo armv7;
4198         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4199         elif check_arm_arch 7S;       then echo armv7-a;
4200         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4201         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4202         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4203         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4204         fi
4205     }
4206
4207     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4208
4209     case $cpu in
4210         armv*)
4211             cpuflags="-march=$cpu"
4212             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4213         ;;
4214         *)
4215             cpuflags="-mcpu=$cpu"
4216             case $cpu in
4217                 cortex-a*)                               subarch=armv7a  ;;
4218                 cortex-r*)                               subarch=armv7r  ;;
4219                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4220                 arm11*)                                  subarch=armv6   ;;
4221                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4222                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4223                 *)                             subarch=$(probe_arm_arch) ;;
4224             esac
4225         ;;
4226     esac
4227
4228     case "$subarch" in
4229         armv5t*)    enable fast_clz                ;;
4230         armv[6-8]*)
4231             enable fast_clz
4232             disabled fast_unaligned || enable fast_unaligned
4233             ;;
4234     esac
4235
4236 elif enabled avr32; then
4237
4238     case $cpu in
4239         ap7[02]0[0-2])
4240             subarch="avr32_ap"
4241             cpuflags="-mpart=$cpu"
4242         ;;
4243         ap)
4244             subarch="avr32_ap"
4245             cpuflags="-march=$cpu"
4246         ;;
4247         uc3[ab]*)
4248             subarch="avr32_uc"
4249             cpuflags="-mcpu=$cpu"
4250         ;;
4251         uc)
4252             subarch="avr32_uc"
4253             cpuflags="-march=$cpu"
4254         ;;
4255     esac
4256
4257 elif enabled bfin; then
4258
4259     cpuflags="-mcpu=$cpu"
4260
4261 elif enabled mips; then
4262
4263     cpuflags="-march=$cpu"
4264
4265     if [ "$cpu" != "generic" ]; then
4266         disable mips32r2
4267         disable mips32r5
4268         disable mips64r2
4269         disable mips32r6
4270         disable mips64r6
4271         disable loongson2
4272         disable loongson3
4273
4274         case $cpu in
4275             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4276                 enable mips32r2
4277                 disable msa
4278             ;;
4279             p5600|i6400)
4280                 disable mipsdsp
4281                 disable mipsdspr2
4282             ;;
4283             loongson*)
4284                 enable loongson2
4285                 enable loongson3
4286                 enable local_aligned_8 local_aligned_16 local_aligned_32
4287                 enable simd_align_16
4288                 enable fast_64bit
4289                 enable fast_clz
4290                 enable fast_cmov
4291                 enable fast_unaligned
4292                 disable aligned_stack
4293                 case $cpu in
4294                     loongson3*)
4295                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4296                     ;;
4297                     loongson2e)
4298                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4299                     ;;
4300                     loongson2f)
4301                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4302                     ;;
4303                 esac
4304             ;;
4305             *)
4306                 # Unknown CPU. Disable everything.
4307                 warn "unknown CPU. Disabling all MIPS optimizations."
4308                 disable mipsfpu
4309                 disable mipsdsp
4310                 disable mipsdspr2
4311                 disable msa
4312                 disable mmi
4313             ;;
4314         esac
4315
4316         case $cpu in
4317             24kc)
4318                 disable mipsfpu
4319                 disable mipsdsp
4320                 disable mipsdspr2
4321             ;;
4322             24kf*)
4323                 disable mipsdsp
4324                 disable mipsdspr2
4325             ;;
4326             24kec|34kc|1004kc)
4327                 disable mipsfpu
4328                 disable mipsdspr2
4329             ;;
4330             24kef*|34kf*|1004kf*)
4331                 disable mipsdspr2
4332             ;;
4333             74kc)
4334                 disable mipsfpu
4335             ;;
4336             p5600)
4337                 enable mips32r5
4338                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4339             ;;
4340             i6400)
4341                 enable mips64r6
4342                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4343             ;;
4344         esac
4345     else
4346         # We do not disable anything. Is up to the user to disable the unwanted features.
4347         warn 'generic cpu selected'
4348     fi
4349
4350 elif enabled ppc; then
4351
4352     disable ldbrx
4353
4354     case $(tolower $cpu) in
4355         601|ppc601|powerpc601)
4356             cpuflags="-mcpu=601"
4357             disable altivec
4358         ;;
4359         603*|ppc603*|powerpc603*)
4360             cpuflags="-mcpu=603"
4361             disable altivec
4362         ;;
4363         604*|ppc604*|powerpc604*)
4364             cpuflags="-mcpu=604"
4365             disable altivec
4366         ;;
4367         g3|75*|ppc75*|powerpc75*)
4368             cpuflags="-mcpu=750"
4369             disable altivec
4370         ;;
4371         g4|745*|ppc745*|powerpc745*)
4372             cpuflags="-mcpu=7450"
4373             disable vsx
4374         ;;
4375         74*|ppc74*|powerpc74*)
4376             cpuflags="-mcpu=7400"
4377             disable vsx
4378         ;;
4379         g5|970|ppc970|powerpc970)
4380             cpuflags="-mcpu=970"
4381             disable vsx
4382         ;;
4383         power[3-6]*)
4384             cpuflags="-mcpu=$cpu"
4385             disable vsx
4386         ;;
4387         power[7-8]*)
4388             cpuflags="-mcpu=$cpu"
4389         ;;
4390         cell)
4391             cpuflags="-mcpu=cell"
4392             enable ldbrx
4393             disable vsx
4394         ;;
4395         e500mc)
4396             cpuflags="-mcpu=e500mc"
4397             disable altivec
4398         ;;
4399         e500v2)
4400             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4401             disable altivec
4402             disable dcbzl
4403         ;;
4404         e500)
4405             cpuflags="-mcpu=8540 -mhard-float"
4406             disable altivec
4407             disable dcbzl
4408         ;;
4409     esac
4410
4411 elif enabled sparc; then
4412
4413     case $cpu in
4414         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4415             cpuflags="-mcpu=$cpu"
4416         ;;
4417         ultrasparc*|niagara[234])
4418             cpuflags="-mcpu=$cpu"
4419         ;;
4420     esac
4421
4422 elif enabled x86; then
4423
4424     case $cpu in
4425         i[345]86|pentium)
4426             cpuflags="-march=$cpu"
4427             disable i686
4428             disable mmx
4429         ;;
4430         # targets that do NOT support nopl and conditional mov (cmov)
4431         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4432             cpuflags="-march=$cpu"
4433             disable i686
4434         ;;
4435         # targets that do support nopl and conditional mov (cmov)
4436         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4437         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4438             cpuflags="-march=$cpu"
4439             enable i686
4440             enable fast_cmov
4441         ;;
4442         # targets that do support conditional mov but on which it's slow
4443         pentium4|pentium4m|prescott|nocona)
4444             cpuflags="-march=$cpu"
4445             enable i686
4446             disable fast_cmov
4447         ;;
4448     esac
4449
4450 fi
4451
4452 if [ "$cpu" != generic ]; then
4453     add_cflags  $cpuflags
4454     add_asflags $cpuflags
4455     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4456 fi
4457
4458 # compiler sanity check
4459 check_exec <<EOF
4460 int main(void){ return 0; }
4461 EOF
4462 if test "$?" != 0; then
4463     echo "$cc is unable to create an executable file."
4464     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4465         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4466         echo "Only do this if you know what cross compiling means."
4467     fi
4468     die "C compiler test failed."
4469 fi
4470
4471 add_cppflags -D_ISOC99_SOURCE
4472 add_cxxflags -D__STDC_CONSTANT_MACROS
4473 check_cflags -std=c99
4474 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4475 #include <stdlib.h>
4476 EOF
4477 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4478 #include <stdlib.h>
4479 EOF
4480
4481 add_host_cppflags -D_ISOC99_SOURCE
4482 check_host_cflags -std=c99
4483 check_host_cflags -Wall
4484 check_host_cflags -O3
4485
4486 check_64bit(){
4487     arch32=$1
4488     arch64=$2
4489     expr=$3
4490     check_code cc "" "int test[2*($expr) - 1]" &&
4491         subarch=$arch64 || subarch=$arch32
4492 }
4493
4494 case "$arch" in
4495     aarch64|alpha|ia64)
4496         spic=$shared
4497     ;;
4498     mips)
4499         check_64bit mips mips64 '_MIPS_SIM > 1'
4500         spic=$shared
4501     ;;
4502     parisc)
4503         check_64bit parisc parisc64 'sizeof(void *) > 4'
4504         spic=$shared
4505     ;;
4506     ppc)
4507         check_64bit ppc ppc64 'sizeof(void *) > 4'
4508         spic=$shared
4509     ;;
4510     s390)
4511         check_64bit s390 s390x 'sizeof(void *) > 4'
4512         spic=$shared
4513     ;;
4514     sparc)
4515         check_64bit sparc sparc64 'sizeof(void *) > 4'
4516         spic=$shared
4517     ;;
4518     x86)
4519         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4520         # Treat x32 as x64 for now. Note it also needs spic=$shared
4521         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4522             subarch=x86_64
4523         if test "$subarch" = "x86_64"; then
4524             spic=$shared
4525         fi
4526     ;;
4527     ppc)
4528         check_cc <<EOF && subarch="ppc64"
4529         int test[(int)sizeof(char*) - 7];
4530 EOF
4531     ;;
4532 esac
4533
4534 enable $subarch
4535 enabled spic && enable_weak pic
4536
4537 # OS specific
4538 case $target_os in
4539     aix)
4540         SHFLAGS=-shared
4541         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4542         enabled shared && add_ldflags -Wl,-brtl
4543         ;;
4544     android)
4545         disable symver
4546         enable section_data_rel_ro
4547         SLIB_INSTALL_NAME='$(SLIBNAME)'
4548         SLIB_INSTALL_LINKS=
4549         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4550         ;;
4551     haiku)
4552         prefix_default="/boot/common"
4553         network_extralibs="-lnetwork"
4554         host_libs=
4555         ;;
4556     sunos)
4557         SHFLAGS='-shared -Wl,-h,$$(@F)'
4558         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4559         network_extralibs="-lsocket -lnsl"
4560         add_cppflags -D__EXTENSIONS__
4561         # When using suncc to build, the Solaris linker will mark
4562         # an executable with each instruction set encountered by
4563         # the Solaris assembler.  As our libraries contain their own
4564         # guards for processor-specific code, instead suppress
4565         # generation of the HWCAPS ELF section on Solaris x86 only.
4566         enabled_all suncc x86 &&
4567             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4568             add_ldflags -Wl,-M,mapfile
4569         nm_default='nm -P -g'
4570         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4571         ;;
4572     netbsd)
4573         disable symver
4574         oss_indev_extralibs="-lossaudio"
4575         oss_outdev_extralibs="-lossaudio"
4576         enabled gcc || check_ldflags -Wl,-zmuldefs
4577         ;;
4578     openbsd|bitrig)
4579         disable symver
4580         SHFLAGS='-shared'
4581         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4582         SLIB_INSTALL_LINKS=
4583         oss_indev_extralibs="-lossaudio"
4584         oss_outdev_extralibs="-lossaudio"
4585         ;;
4586     dragonfly)
4587         disable symver
4588         ;;
4589     freebsd)
4590         ;;
4591     bsd/os)
4592         add_extralibs -lpoll -lgnugetopt
4593         strip="strip -d"
4594         ;;
4595     darwin)
4596         enabled ppc && add_asflags -force_cpusubtype_ALL
4597         install_name_dir_default='$(SHLIBDIR)'
4598         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4599         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4600         strip="${strip} -x"
4601         add_ldflags -Wl,-dynamic,-search_paths_first
4602         SLIBSUF=".dylib"
4603         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4604         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4605         objformat="macho"
4606         enabled x86_64 && objformat="macho64"
4607         enabled_any pic shared x86_64 ||
4608             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4609         check_header dispatch/dispatch.h
4610         ;;
4611     msys*)
4612         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4613         ;;
4614     mingw32*|mingw64*)
4615         if test $target_os = "mingw32ce"; then
4616             disable network
4617         else
4618             target_os=mingw32
4619         fi
4620         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4621         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4622         LIBTARGET=i386
4623         if enabled x86_64; then
4624             LIBTARGET="i386:x86-64"
4625         elif enabled arm; then
4626             LIBTARGET=arm-wince
4627         fi
4628         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4629         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4630         shlibdir_default="$bindir_default"
4631         SLIBPREF=""
4632         SLIBSUF=".dll"
4633         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4634         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4635         dlltool="${cross_prefix}dlltool"
4636         if check_cmd lib.exe -list; then
4637             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4638             if enabled x86_64; then
4639                 LIBTARGET=x64
4640             fi
4641         elif check_cmd $dlltool --version; then
4642             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4643         fi
4644         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4645         SLIB_INSTALL_LINKS=
4646         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4647         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4648         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4649         objformat="win32"
4650         ranlib=:
4651         enable dos_paths
4652         check_ldflags -Wl,--nxcompat,--dynamicbase
4653         # Lets work around some stupidity in binutils.
4654         # ld will strip relocations from executables even though we need them
4655         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4656         # however ld then forgets what the entry point should be (oops) so we
4657         # have to manually (re)set it.
4658         if enabled x86_32; then
4659             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4660         elif enabled x86_64; then
4661             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4662             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4663             # Set image base >4GB for extra entropy with HEASLR
4664             add_ldexeflags -Wl,--image-base,0x140000000
4665             append SHFLAGS -Wl,--image-base,0x180000000
4666         fi
4667         ;;
4668     win32|win64)
4669         disable symver
4670         if enabled shared; then
4671             # Link to the import library instead of the normal static library
4672             # for shared libs.
4673             LD_LIB='%.lib'
4674             # Cannot build both shared and static libs with MSVC or icl.
4675             disable static
4676         fi
4677         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4678         shlibdir_default="$bindir_default"
4679         SLIBPREF=""
4680         SLIBSUF=".dll"
4681         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4682         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4683         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4684         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4685         SLIB_INSTALL_LINKS=
4686         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4687         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4688         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4689         objformat="win32"
4690         ranlib=:
4691         enable dos_paths
4692         ;;
4693     cygwin*)
4694         target_os=cygwin
4695         shlibdir_default="$bindir_default"
4696         SLIBPREF="cyg"
4697         SLIBSUF=".dll"
4698         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4699         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4700         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4701         SLIB_INSTALL_LINKS=
4702         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4703         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4704         objformat="win32"
4705         enable dos_paths
4706         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4707         ;;
4708     *-dos|freedos|opendos)
4709         network_extralibs="-lsocket"
4710         objformat="coff"
4711         enable dos_paths
4712         add_cppflags -U__STRICT_ANSI__
4713         ;;
4714     linux)
4715         enable dv1394
4716         enable section_data_rel_ro
4717         ;;
4718     irix*)
4719         target_os=irix
4720         ranlib="echo ignoring ranlib"
4721         ;;
4722     os/2*)
4723         strip="lxlite -CS"
4724         objformat="aout"
4725         add_cppflags -D_GNU_SOURCE
4726         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4727         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4728         LIBSUF="_s.a"
4729         SLIBPREF=""
4730         SLIBSUF=".dll"
4731         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4732         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4733         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4734             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4735             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4736             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4737             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4738         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4739             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4740         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4741         SLIB_INSTALL_LINKS=
4742         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4743         enable dos_paths
4744         enable_weak os2threads
4745         ;;
4746     gnu/kfreebsd)
4747         add_cppflags -D_BSD_SOURCE
4748         ;;
4749     gnu)
4750         ;;
4751     qnx)
4752         add_cppflags -D_QNX_SOURCE
4753         network_extralibs="-lsocket"
4754         ;;
4755     symbian)
4756         SLIBSUF=".dll"
4757         enable dos_paths
4758         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4759         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4760         add_ldflags -Wl,--target1-abs,--no-undefined \
4761                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4762                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4763         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4764                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4765                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4766         ;;
4767     osf1)
4768         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4769         ;;
4770     minix)
4771         ;;
4772     plan9)
4773         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4774                      -D_REENTRANT_SOURCE        \
4775                      -D_RESEARCH_SOURCE         \
4776                      -DFD_SETSIZE=96            \
4777                      -DHAVE_SOCK_OPTS
4778         add_compat strtod.o strtod=avpriv_strtod
4779         network_extralibs='-lbsd'
4780         exeobjs=compat/plan9/main.o
4781         disable ffserver
4782         cp_f='cp'
4783         ;;
4784     none)
4785         ;;
4786     *)
4787         die "Unknown OS '$target_os'."
4788         ;;
4789 esac
4790
4791 # test if creating links works
4792 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4793 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4794 mkdir "$link_dest"
4795 $ln_s "$link_dest" "$link_name"
4796 touch "$link_dest/test_file"
4797 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4798     # create link to source path
4799     [ -e src ] && rm src
4800     $ln_s "$source_path" src
4801     source_link=src
4802 else
4803     # creating directory links doesn't work
4804     # fall back to using the full source path
4805     source_link="$source_path"
4806 fi
4807 # cleanup
4808 rm -r "$link_dest"
4809 rm -r "$link_name"
4810
4811 # determine libc flavour
4812
4813 probe_libc(){
4814     pfx=$1
4815     pfx_no_=${pfx%_}
4816     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4817     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4818         eval ${pfx}libc_type=uclibc
4819         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4820     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4821         eval ${pfx}libc_type=glibc
4822         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4823     # MinGW headers can be installed on Cygwin, so check for newlib first.
4824     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4825         eval ${pfx}libc_type=newlib
4826         add_${pfx}cppflags -U__STRICT_ANSI__
4827     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4828     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4829         eval ${pfx}libc_type=mingw64
4830         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4831             add_compat msvcrt/snprintf.o
4832             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4833         fi
4834         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4835         eval test \$${pfx_no_}cc_type = "gcc" &&
4836             add_${pfx}cppflags -D__printf__=__gnu_printf__
4837     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4838          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4839         eval ${pfx}libc_type=mingw32
4840         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4841             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4842             die "ERROR: MinGW32 runtime version must be >= 3.15."
4843         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4844         eval test \$${pfx_no_}cc_type = "gcc" &&
4845             add_${pfx}cppflags -D__printf__=__gnu_printf__
4846     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4847         eval ${pfx}libc_type=msvcrt
4848         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4849             if [ "$pfx" = host_ ]; then
4850                 add_host_cppflags -Dsnprintf=_snprintf
4851             else
4852                 add_compat strtod.o strtod=avpriv_strtod
4853                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4854                                              _snprintf=avpriv_snprintf  \
4855                                              vsnprintf=avpriv_vsnprintf
4856             fi
4857         fi
4858         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4859         # 0x601 by default unless something else is set by the user.
4860         # This can easily lead to us detecting functions only present
4861         # in such new versions and producing binaries requiring windows 7.0.
4862         # Therefore explicitly set the default to XP unless the user has
4863         # set something else on the command line.
4864         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4865         # family. For these cases, configure is free to use any functions
4866         # found in the SDK headers by default. (Alternatively, we could force
4867         # _WIN32_WINNT to 0x0602 in that cas