Merge commit '8e7bea6dc6ac5b21484774a026847bec0771ab62'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
203                            if openssl, librtmp or gmp is not used [no]
204   --enable-gmp             enable gmp, needed for rtmp(t)e support
205                            if openssl or librtmp is not used [no]
206   --enable-gnutls          enable gnutls, needed for https support
207                            if openssl is not used [no]
208   --disable-iconv          disable iconv [autodetect]
209   --enable-ladspa          enable LADSPA audio filtering [no]
210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
211   --enable-libass          enable libass subtitles rendering,
212                            needed for subtitles and ass filter [no]
213   --enable-libbluray       enable BluRay reading using libbluray [no]
214   --enable-libbs2b         enable bs2b DSP library [no]
215   --enable-libcaca         enable textual display using libcaca [no]
216   --enable-libcelt         enable CELT decoding via libcelt [no]
217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
219                            and libraw1394 [no]
220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
221   --enable-libfaac         enable AAC encoding via libfaac [no]
222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
226   --enable-libgme          enable Game Music Emu via libgme [no]
227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
231   --enable-libmfx          enable HW acceleration through libmfx
232   --enable-libmodplug      enable ModPlug via libmodplug [no]
233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
234   --enable-libnut          enable NUT (de)muxing via libnut,
235                            native (de)muxer exists [no]
236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
238   --enable-libopencv       enable video filtering via libopencv [no]
239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
241   --enable-libopus         enable Opus de/encoding via libopus [no]
242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
244   --enable-librtmp         enable RTMP[E] support via librtmp [no]
245   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
246   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
247   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
248   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
249   --enable-libsoxr         enable Include libsoxr resampling [no]
250   --enable-libspeex        enable Speex de/encoding via libspeex [no]
251   --enable-libssh          enable SFTP protocol via libssh [no]
252   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
253   --enable-libtheora       enable Theora encoding via libtheora [no]
254   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
255   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
256   --enable-libv4l2         enable libv4l2/v4l-utils [no]
257   --enable-libvidstab      enable video stabilization using vid.stab [no]
258   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
261                            native implementation exists [no]
262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
264   --enable-libwebp         enable WebP encoding via libwebp [no]
265   --enable-libx264         enable H.264 encoding via x264 [no]
266   --enable-libx265         enable HEVC encoding via x265 [no]
267   --enable-libxavs         enable AVS encoding via xavs [no]
268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
272   --enable-libxvid         enable Xvid encoding via xvidcore,
273                            native MPEG-4/Xvid encoder exists [no]
274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
275   --enable-libzmq          enable message passing via libzmq [no]
276   --enable-libzvbi         enable teletext support via libzvbi [no]
277   --disable-lzma           disable lzma [autodetect]
278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
279   --enable-mmal            enable decoding via MMAL [no]
280   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
281   --enable-nvenc           enable NVIDIA NVENC support [no]
282   --enable-openal          enable OpenAL 1.1 capture support [no]
283   --enable-opencl          enable OpenCL code
284   --enable-opengl          enable OpenGL rendering [no]
285   --enable-openssl         enable openssl, needed for https support
286                            if gnutls is not used [no]
287   --disable-schannel       disable SChannel SSP, needed for TLS support on
288                            Windows if openssl and gnutls are not used [autodetect]
289   --disable-sdl            disable sdl [autodetect]
290   --disable-securetransport disable Secure Transport, needed for TLS support
291                            on OSX if openssl and gnutls are not used [autodetect]
292   --enable-x11grab         enable X11 grabbing (legacy) [no]
293   --disable-xlib           disable xlib [autodetect]
294   --disable-zlib           disable zlib [autodetect]
295
296 Toolchain options:
297   --arch=ARCH              select architecture [$arch]
298   --cpu=CPU                select the minimum required CPU (affects
299                            instruction selection, may crash on older CPUs)
300   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
301   --progs-suffix=SUFFIX    program name suffix []
302   --enable-cross-compile   assume a cross-compiler is used
303   --sysroot=PATH           root of cross-build tree
304   --sysinclude=PATH        location of cross-build system headers
305   --target-os=OS           compiler targets OS [$target_os]
306   --target-exec=CMD        command to run executables on target
307   --target-path=DIR        path to view of build directory on target
308   --target-samples=DIR     path to samples directory on target
309   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
310   --toolchain=NAME         set tool defaults according to NAME
311   --nm=NM                  use nm tool NM [$nm_default]
312   --ar=AR                  use archive tool AR [$ar_default]
313   --as=AS                  use assembler AS [$as_default]
314   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
315   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
316   --cc=CC                  use C compiler CC [$cc_default]
317   --cxx=CXX                use C compiler CXX [$cxx_default]
318   --objcc=OCC              use ObjC compiler OCC [$cc_default]
319   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
320   --ld=LD                  use linker LD [$ld_default]
321   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
322   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
323   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
324   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
325   --host-cc=HOSTCC         use host C compiler HOSTCC
326   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
327   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
328   --host-ld=HOSTLD         use host linker HOSTLD
329   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
330   --host-libs=HLIBS        use libs HLIBS when linking for host
331   --host-os=OS             compiler host OS [$target_os]
332   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
333   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
334   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
335   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
336   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
337   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
338   --extra-libs=ELIBS       add ELIBS [$ELIBS]
339   --extra-version=STRING   version string suffix []
340   --optflags=OPTFLAGS      override optimization-related compiler flags
341   --build-suffix=SUFFIX    library name suffix []
342   --enable-pic             build position-independent code
343   --enable-thumb           compile for Thumb instruction set
344   --enable-lto             use link-time optimization
345   --env="ENV=override"     override the environment variables
346
347 Advanced options (experts only):
348   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
349   --custom-allocator=NAME  use a supported custom allocator
350   --disable-symver         disable symbol versioning
351   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
352   --disable-safe-bitstream-reader
353                            disable buffer boundary checking in bitreaders
354                            (faster, but may crash)
355   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
356   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
357
358 Optimization options (experts only):
359   --disable-asm            disable all assembly optimizations
360   --disable-altivec        disable AltiVec optimizations
361   --disable-vsx            disable VSX optimizations
362   --disable-power8         disable POWER8 optimizations
363   --disable-amd3dnow       disable 3DNow! optimizations
364   --disable-amd3dnowext    disable 3DNow! extended optimizations
365   --disable-mmx            disable MMX optimizations
366   --disable-mmxext         disable MMXEXT optimizations
367   --disable-sse            disable SSE optimizations
368   --disable-sse2           disable SSE2 optimizations
369   --disable-sse3           disable SSE3 optimizations
370   --disable-ssse3          disable SSSE3 optimizations
371   --disable-sse4           disable SSE4 optimizations
372   --disable-sse42          disable SSE4.2 optimizations
373   --disable-avx            disable AVX optimizations
374   --disable-xop            disable XOP optimizations
375   --disable-fma3           disable FMA3 optimizations
376   --disable-fma4           disable FMA4 optimizations
377   --disable-avx2           disable AVX2 optimizations
378   --disable-aesni          disable AESNI optimizations
379   --disable-armv5te        disable armv5te optimizations
380   --disable-armv6          disable armv6 optimizations
381   --disable-armv6t2        disable armv6t2 optimizations
382   --disable-vfp            disable VFP optimizations
383   --disable-neon           disable NEON optimizations
384   --disable-inline-asm     disable use of inline assembly
385   --disable-yasm           disable use of nasm/yasm assembly
386   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
387   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
388   --disable-msa            disable MSA optimizations
389   --disable-mipsfpu        disable floating point MIPS optimizations
390   --disable-mmi            disable Loongson SIMD optimizations
391   --disable-fast-unaligned consider unaligned accesses slow
392
393 Developer options (useful when working on FFmpeg itself):
394   --disable-debug          disable debugging symbols
395   --enable-debug=LEVEL     set the debug level [$debuglevel]
396   --disable-optimizations  disable compiler optimizations
397   --enable-extra-warnings  enable more compiler warnings
398   --disable-stripping      disable stripping of executables and shared libraries
399   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
400                            2 causes a slowdown at runtime.
401   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
402   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
403                            leaks and errors, using the specified valgrind binary.
404                            Cannot be combined with --target-exec
405   --enable-ftrapv          Trap arithmetic overflows
406   --samples=PATH           location of test samples for FATE, if not set use
407                            \$FATE_SAMPLES at make invocation time.
408   --enable-neon-clobber-test check NEON registers for clobbering (should be
409                            used only for debugging purposes)
410   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
411                            should be used only for debugging purposes)
412   --enable-random          randomly enable/disable components
413   --disable-random
414   --enable-random=LIST     randomly enable/disable specific components or
415   --disable-random=LIST    component groups. LIST is a comma-separated list
416                            of NAME[:PROB] entries where NAME is a component
417                            (group) and PROB the probability associated with
418                            NAME (default 0.5).
419   --random-seed=VALUE      seed value for --enable/disable-random
420   --disable-valgrind-backtrace do not print a backtrace under Valgrind
421                            (only applies to --disable-optimizations builds)
422
423 NOTE: Object files are built at the place where configure is launched.
424 EOF
425   exit 0
426 }
427
428 quotes='""'
429 if test -t 1 && which tput >/dev/null 2>&1; then
430     ncolors=$(tput colors)
431     if test -n "$ncolors" && test $ncolors -ge 8; then
432         bold_color=$(tput bold)
433         warn_color=$(tput setaf 3)
434         error_color=$(tput setaf 1)
435         reset_color=$(tput sgr0)
436     fi
437     # 72 used instead of 80 since that's the default of pr
438     ncols=$(tput cols)
439 fi
440 : ${ncols:=72}
441
442 log(){
443     echo "$@" >> $logfile
444 }
445
446 log_file(){
447     log BEGIN $1
448     pr -n -t $1 >> $logfile
449     log END $1
450 }
451
452 warn(){
453     log "WARNING: $*"
454     WARNINGS="${WARNINGS}WARNING: $*\n"
455 }
456
457 die(){
458     log "$@"
459     echo "$error_color$bold_color$@$reset_color"
460     cat <<EOF
461
462 If you think configure made a mistake, make sure you are using the latest
463 version from Git.  If the latest version fails, report the problem to the
464 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
465 EOF
466     if disabled logging; then
467         cat <<EOF
468 Rerun configure with logging enabled (do not use --disable-logging), and
469 include the log this produces with your report.
470 EOF
471     else
472         cat <<EOF
473 Include the log file "$logfile" produced by configure as this will help
474 solve the problem.
475 EOF
476     fi
477     exit 1
478 }
479
480 # Avoid locale weirdness, besides we really just want to translate ASCII.
481 toupper(){
482     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
483 }
484
485 tolower(){
486     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
487 }
488
489 c_escape(){
490     echo "$*" | sed 's/["\\]/\\\0/g'
491 }
492
493 sh_quote(){
494     v=$(echo "$1" | sed "s/'/'\\\\''/g")
495     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
496     echo "$v"
497 }
498
499 cleanws(){
500     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
501 }
502
503 filter(){
504     pat=$1
505     shift
506     for v; do
507         eval "case $v in $pat) echo $v ;; esac"
508     done
509 }
510
511 filter_out(){
512     pat=$1
513     shift
514     for v; do
515         eval "case $v in $pat) ;; *) echo $v ;; esac"
516     done
517 }
518
519 map(){
520     m=$1
521     shift
522     for v; do eval $m; done
523 }
524
525 add_suffix(){
526     suffix=$1
527     shift
528     for v; do echo ${v}${suffix}; done
529 }
530
531 set_all(){
532     value=$1
533     shift
534     for var in $*; do
535         eval $var=$value
536     done
537 }
538
539 set_weak(){
540     value=$1
541     shift
542     for var; do
543         eval : \${$var:=$value}
544     done
545 }
546
547 sanitize_var_name(){
548     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
549 }
550
551 set_safe(){
552     var=$1
553     shift
554     eval $(sanitize_var_name "$var")='$*'
555 }
556
557 get_safe(){
558     eval echo \$$(sanitize_var_name "$1")
559 }
560
561 pushvar(){
562     for pvar in $*; do
563         eval level=\${${pvar}_level:=0}
564         eval ${pvar}_${level}="\$$pvar"
565         eval ${pvar}_level=$(($level+1))
566     done
567 }
568
569 popvar(){
570     for pvar in $*; do
571         eval level=\${${pvar}_level:-0}
572         test $level = 0 && continue
573         eval level=$(($level-1))
574         eval $pvar="\${${pvar}_${level}}"
575         eval ${pvar}_level=$level
576         eval unset ${pvar}_${level}
577     done
578 }
579
580 enable(){
581     set_all yes $*
582 }
583
584 check_requested() {
585     for var; do
586         eval test "x\$${var#!}_requested" = "xyes" &&  die "${var#*_} ${var/_*} cannot be enabled"
587     done
588 }
589
590 disable(){
591     set_all no $*
592     check_requested $*
593 }
594
595 enable_weak(){
596     set_weak yes $*
597 }
598
599 disable_weak(){
600     set_weak no $*
601 }
602
603 enable_safe(){
604     for var; do
605         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
606     done
607 }
608
609 disable_safe(){
610     for var; do
611         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
612     done
613 }
614
615 do_enable_deep(){
616     for var; do
617         enabled $var && continue
618         eval sel="\$${var}_select\ \$${var}_select_any"
619         eval sgs="\$${var}_suggest"
620         pushvar var sgs
621         enable_deep $sel
622         popvar sgs
623         enable_deep_weak $sgs
624         popvar var
625     done
626 }
627
628 enable_deep(){
629     do_enable_deep $*
630     enable $*
631 }
632
633 enable_deep_weak(){
634     for var; do
635         disabled $var && continue
636         pushvar var
637         do_enable_deep $var
638         popvar var
639         enable_weak $var
640     done
641 }
642
643 request(){
644     for var; do
645         enable ${var}_requested
646     done
647     enable_deep $*
648 }
649
650 enabled(){
651     test "${1#!}" = "$1" && op='=' || op=!=
652     eval test "x\$${1#!}" $op "xyes"
653 }
654
655 disabled(){
656     test "${1#!}" = "$1" && op='=' || op=!=
657     eval test "x\$${1#!}" $op "xno"
658 }
659
660 enabled_all(){
661     for opt; do
662         enabled $opt || return 1
663     done
664 }
665
666 disabled_all(){
667     for opt; do
668         disabled $opt || return 1
669     done
670 }
671
672 enabled_any(){
673     for opt; do
674         enabled $opt && return 0
675     done
676 }
677
678 disabled_any(){
679     for opt; do
680         disabled $opt && return 0
681     done
682     return 1
683 }
684
685 set_default(){
686     for opt; do
687         eval : \${$opt:=\$${opt}_default}
688     done
689 }
690
691 is_in(){
692     value=$1
693     shift
694     for var in $*; do
695         [ $var = $value ] && return 0
696     done
697     return 1
698 }
699
700 do_check_deps(){
701     for cfg; do
702         cfg="${cfg#!}"
703         enabled ${cfg}_checking && die "Circular dependency for $cfg."
704         disabled ${cfg}_checking && continue
705         enable ${cfg}_checking
706         append allopts $cfg
707
708         eval dep_all="\$${cfg}_deps"
709         eval dep_any="\$${cfg}_deps_any\ \$${cfg}_select_any"
710         eval dep_sel="\$${cfg}_select"
711         eval dep_sgs="\$${cfg}_suggest"
712         eval dep_ifa="\$${cfg}_if"
713         eval dep_ifn="\$${cfg}_if_any"
714
715         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
716         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
717         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
718
719         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
720         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
721         enabled_all  $dep_all || disable $cfg
722         enabled_any  $dep_any || disable $cfg
723         disabled_any $dep_sel && disable $cfg
724
725         if enabled $cfg; then
726             enable_deep $dep_sel
727             enable_deep_weak $dep_sgs
728         fi
729
730         disable ${cfg}_checking
731     done
732 }
733
734 check_deps(){
735     unset allopts
736
737     do_check_deps "$@"
738
739     for cfg in $allopts; do
740         enabled $cfg || continue
741         eval dep_extralibs="\$${cfg}_extralibs"
742         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
743     done
744 }
745
746 print_config(){
747     pfx=$1
748     files=$2
749     shift 2
750     map 'eval echo "$v \${$v:-no}"' "$@" |
751     awk "BEGIN { split(\"$files\", files) }
752         {
753             c = \"$pfx\" toupper(\$1);
754             v = \$2;
755             sub(/yes/, 1, v);
756             sub(/no/,  0, v);
757             for (f in files) {
758                 file = files[f];
759                 if (file ~ /\\.h\$/) {
760                     printf(\"#define %s %d\\n\", c, v) >>file;
761                 } else if (file ~ /\\.asm\$/) {
762                     printf(\"%%define %s %d\\n\", c, v) >>file;
763                 } else if (file ~ /\\.mak\$/) {
764                     n = -v ? \"\" : \"!\";
765                     printf(\"%s%s=yes\\n\", n, c) >>file;
766                 } else if (file ~ /\\.texi\$/) {
767                     pre = -v ? \"\" : \"@c \";
768                     yesno = \$2;
769                     c2 = tolower(c);
770                     gsub(/_/, \"-\", c2);
771                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
772                 }
773             }
774         }"
775 }
776
777 print_enabled(){
778     suf=$1
779     shift
780     for v; do
781         enabled $v && printf "%s\n" ${v%$suf};
782     done
783 }
784
785 append(){
786     var=$1
787     shift
788     eval "$var=\"\$$var $*\""
789 }
790
791 prepend(){
792     var=$1
793     shift
794     eval "$var=\"$* \$$var\""
795 }
796
797 unique(){
798     var=$1
799     uniq_list=""
800     for tok in $(eval echo \$$var); do
801         uniq_list="$(filter_out $tok $uniq_list) $tok"
802     done
803     eval "$var=\"${uniq_list}\""
804 }
805
806 add_cppflags(){
807     append CPPFLAGS "$@"
808 }
809
810 add_cflags(){
811     append CFLAGS $($cflags_filter "$@")
812 }
813
814 add_cxxflags(){
815     append CXXFLAGS $($cflags_filter "$@")
816 }
817
818 add_asflags(){
819     append ASFLAGS $($asflags_filter "$@")
820 }
821
822 add_objcflags(){
823     append OBJCFLAGS $($objcflags_filter "$@")
824 }
825
826 add_ldflags(){
827     append LDFLAGS $($ldflags_filter "$@")
828 }
829
830 add_ldexeflags(){
831     append LDEXEFLAGS $($ldflags_filter "$@")
832 }
833
834 add_ldlibflags(){
835     append LDLIBFLAGS $($ldflags_filter "$@")
836 }
837
838 add_stripflags(){
839     append ASMSTRIPFLAGS "$@"
840 }
841
842 add_extralibs(){
843     prepend extralibs $($ldflags_filter "$@")
844 }
845
846 add_host_cppflags(){
847     append host_cppflags "$@"
848 }
849
850 add_host_cflags(){
851     append host_cflags $($host_cflags_filter "$@")
852 }
853
854 add_host_ldflags(){
855     append host_ldflags $($host_ldflags_filter "$@")
856 }
857
858 add_compat(){
859     append compat_objs $1
860     shift
861     map 'add_cppflags -D$v' "$@"
862 }
863
864 check_cmd(){
865     log "$@"
866     "$@" >> $logfile 2>&1
867 }
868
869 check_stat(){
870     log check_stat "$@"
871     stat "$1" >> $logfile 2>&1
872 }
873
874 cc_o(){
875     eval printf '%s\\n' $CC_O
876 }
877
878 cc_e(){
879     eval printf '%s\\n' $CC_E
880 }
881
882 check_cc(){
883     log check_cc "$@"
884     cat > $TMPC
885     log_file $TMPC
886     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
887 }
888
889 check_cxx(){
890     log check_cxx "$@"
891     cat > $TMPCPP
892     log_file $TMPCPP
893     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
894 }
895
896 check_objcc(){
897     log check_objcc "$@"
898     cat > $TMPM
899     log_file $TMPM
900     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
901 }
902
903 check_cpp(){
904     log check_cpp "$@"
905     cat > $TMPC
906     log_file $TMPC
907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
908 }
909
910 as_o(){
911     eval printf '%s\\n' $AS_O
912 }
913
914 check_as(){
915     log check_as "$@"
916     cat > $TMPS
917     log_file $TMPS
918     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
919 }
920
921 check_inline_asm(){
922     log check_inline_asm "$@"
923     name="$1"
924     code="$2"
925     shift 2
926     disable $name
927     check_cc "$@" <<EOF && enable $name
928 void foo(void){ __asm__ volatile($code); }
929 EOF
930 }
931
932 check_insn(){
933     log check_insn "$@"
934     check_inline_asm ${1}_inline "\"$2\""
935     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
936 }
937
938 check_yasm(){
939     log check_yasm "$@"
940     echo "$1" > $TMPS
941     log_file $TMPS
942     shift 1
943     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
944 }
945
946 ld_o(){
947     eval printf '%s\\n' $LD_O
948 }
949
950 check_ld(){
951     log check_ld "$@"
952     type=$1
953     shift 1
954     flags=$(filter_out '-l*|*.so' $@)
955     libs=$(filter '-l*|*.so' $@)
956     check_$type $($cflags_filter $flags) || return
957     flags=$($ldflags_filter $flags)
958     libs=$($ldflags_filter $libs)
959     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
960 }
961
962 print_include(){
963     hdr=$1
964     test "${hdr%.h}" = "${hdr}" &&
965         echo "#include $hdr"    ||
966         echo "#include <$hdr>"
967 }
968
969 check_code(){
970     log check_code "$@"
971     check=$1
972     headers=$2
973     code=$3
974     shift 3
975     {
976         for hdr in $headers; do
977             print_include $hdr
978         done
979         echo "int main(void) { $code; return 0; }"
980     } | check_$check "$@"
981 }
982
983 check_cppflags(){
984     log check_cppflags "$@"
985     check_cc "$@" <<EOF && append CPPFLAGS "$@"
986 int x;
987 EOF
988 }
989
990 test_cflags(){
991     log test_cflags "$@"
992     set -- $($cflags_filter "$@")
993     check_cc "$@" <<EOF
994 int x;
995 EOF
996 }
997
998 check_cflags(){
999     log check_cflags "$@"
1000     test_cflags "$@" && add_cflags "$@"
1001 }
1002
1003 check_cxxflags(){
1004     log check_cxxflags "$@"
1005     set -- $($cflags_filter "$@")
1006     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1007 int x;
1008 EOF
1009 }
1010
1011 test_objcflags(){
1012     log test_cflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_objcc "$@" <<EOF
1015 int x;
1016 EOF
1017 }
1018
1019 check_objcflags(){
1020     log check_cflags "$@"
1021     test_objcflags "$@" && add_objcflags "$@"
1022 }
1023
1024 test_ldflags(){
1025     log test_ldflags "$@"
1026     check_ld "cc" "$@" <<EOF
1027 int main(void){ return 0; }
1028 EOF
1029 }
1030
1031 check_ldflags(){
1032     log check_ldflags "$@"
1033     test_ldflags "$@" && add_ldflags "$@"
1034 }
1035
1036 test_stripflags(){
1037     log test_stripflags "$@"
1038     # call check_cc to get a fresh TMPO
1039     check_cc <<EOF
1040 int main(void) { return 0; }
1041 EOF
1042     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1043 }
1044
1045 check_stripflags(){
1046     log check_stripflags "$@"
1047     test_stripflags "$@" && add_stripflags "$@"
1048 }
1049
1050 check_header(){
1051     log check_header "$@"
1052     header=$1
1053     shift
1054     disable_safe $header
1055     check_cpp "$@" <<EOF && enable_safe $header
1056 #include <$header>
1057 int x;
1058 EOF
1059 }
1060
1061 check_header_objcc(){
1062     log check_header_objcc "$@"
1063     rm -f -- "$TMPO"
1064     header=$1
1065     shift
1066     disable_safe $header
1067     {
1068        echo "#include <$header>"
1069        echo "int main(void) { return 0; }"
1070     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1071 }
1072
1073 check_func(){
1074     log check_func "$@"
1075     func=$1
1076     shift
1077     disable $func
1078     check_ld "cc" "$@" <<EOF && enable $func
1079 extern int $func();
1080 int main(void){ $func(); }
1081 EOF
1082 }
1083
1084 check_complexfunc(){
1085     log check_complexfunc "$@"
1086     func=$1
1087     narg=$2
1088     shift 2
1089     test $narg = 2 && args="f, g" || args="f * I"
1090     disable $func
1091     check_ld "cc" "$@" <<EOF && enable $func
1092 #include <complex.h>
1093 #include <math.h>
1094 float foo(complex float f, complex float g) { return $func($args); }
1095 int main(void){ return (int) foo; }
1096 EOF
1097 }
1098
1099 check_mathfunc(){
1100     log check_mathfunc "$@"
1101     func=$1
1102     narg=$2
1103     shift 2
1104     test $narg = 2 && args="f, g" || args="f"
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 #include <math.h>
1108 float foo(float f, float g) { return $func($args); }
1109 int main(void){ return (int) foo; }
1110 EOF
1111 }
1112
1113 check_func_headers(){
1114     log check_func_headers "$@"
1115     headers=$1
1116     funcs=$2
1117     shift 2
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         for func in $funcs; do
1123             echo "long check_$func(void) { return (long) $func; }"
1124         done
1125         echo "int main(void) { return 0; }"
1126     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1127 }
1128
1129 check_class_headers_cpp(){
1130     log check_class_headers_cpp "$@"
1131     headers=$1
1132     classes=$2
1133     shift 2
1134     {
1135         for hdr in $headers; do
1136             echo "#include <$hdr>"
1137         done
1138         echo "int main(void) { "
1139         i=1
1140         for class in $classes; do
1141             echo "$class obj$i;"
1142             i=$(expr $i + 1)
1143         done
1144         echo "return 0; }"
1145     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1146 }
1147
1148 check_cpp_condition(){
1149     log check_cpp_condition "$@"
1150     header=$1
1151     condition=$2
1152     shift 2
1153     check_cpp "$@" <<EOF
1154 #include <$header>
1155 #if !($condition)
1156 #error "unsatisfied condition: $condition"
1157 #endif
1158 EOF
1159 }
1160
1161 check_lib(){
1162     log check_lib "$@"
1163     header="$1"
1164     func="$2"
1165     shift 2
1166     check_header $header && check_func $func "$@" && add_extralibs "$@"
1167 }
1168
1169 check_lib2(){
1170     log check_lib2 "$@"
1171     headers="$1"
1172     funcs="$2"
1173     shift 2
1174     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib_cpp(){
1178     log check_lib_cpp "$@"
1179     headers="$1"
1180     classes="$2"
1181     shift 2
1182     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_pkg_config(){
1186     log check_pkg_config "$@"
1187     pkgandversion="$1"
1188     pkg="${1%% *}"
1189     headers="$2"
1190     funcs="$3"
1191     shift 3
1192     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1193     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1194     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1195     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1196         set_safe "${pkg}_cflags" $pkg_cflags   &&
1197         set_safe "${pkg}_libs"   $pkg_libs
1198 }
1199
1200 check_exec(){
1201     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1202 }
1203
1204 check_exec_crash(){
1205     code=$(cat)
1206
1207     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1208     # are safe but may not be available everywhere.  Thus we use
1209     # raise(SIGTERM) instead.  The check is run in a subshell so we
1210     # can redirect the "Terminated" message from the shell.  SIGBUS
1211     # is not defined by standard C so it is used conditionally.
1212
1213     (check_exec "$@") >> $logfile 2>&1 <<EOF
1214 #include <signal.h>
1215 static void sighandler(int sig){
1216     raise(SIGTERM);
1217 }
1218 int foo(void){
1219     $code
1220 }
1221 int (*func_ptr)(void) = foo;
1222 int main(void){
1223     signal(SIGILL, sighandler);
1224     signal(SIGFPE, sighandler);
1225     signal(SIGSEGV, sighandler);
1226 #ifdef SIGBUS
1227     signal(SIGBUS, sighandler);
1228 #endif
1229     return func_ptr();
1230 }
1231 EOF
1232 }
1233
1234 check_type(){
1235     log check_type "$@"
1236     headers=$1
1237     type=$2
1238     shift 2
1239     disable_safe "$type"
1240     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1241 }
1242
1243 check_struct(){
1244     log check_struct "$@"
1245     headers=$1
1246     struct=$2
1247     member=$3
1248     shift 3
1249     disable_safe "${struct}_${member}"
1250     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1251         enable_safe "${struct}_${member}"
1252 }
1253
1254 check_builtin(){
1255     log check_builtin "$@"
1256     name=$1
1257     headers=$2
1258     builtin=$3
1259     shift 3
1260     disable "$name"
1261     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1262 }
1263
1264 check_compile_assert(){
1265     log check_compile_assert "$@"
1266     name=$1
1267     headers=$2
1268     condition=$3
1269     shift 3
1270     disable "$name"
1271     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1272 }
1273
1274 require(){
1275     name="$1"
1276     header="$2"
1277     func="$3"
1278     shift 3
1279     check_lib $header $func "$@" || die "ERROR: $name not found"
1280 }
1281
1282 require2(){
1283     name="$1"
1284     headers="$2"
1285     func="$3"
1286     shift 3
1287     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require_cpp(){
1291     name="$1"
1292     headers="$2"
1293     classes="$3"
1294     shift 3
1295     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1296 }
1297
1298 use_pkg_config(){
1299     pkg="$1"
1300     check_pkg_config "$@" || return 1
1301     add_cflags    $(get_safe "${pkg}_cflags")
1302     add_extralibs $(get_safe "${pkg}_libs")
1303 }
1304
1305 require_pkg_config(){
1306     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1307 }
1308
1309 require_libfreetype(){
1310     log require_libfreetype "$@"
1311     pkg="freetype2"
1312     check_cmd $pkg_config --exists --print-errors $pkg \
1313       || die "ERROR: $pkg not found"
1314     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1315     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1316     {
1317         echo "#include <ft2build.h>"
1318         echo "#include FT_FREETYPE_H"
1319         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1320         echo "int main(void) { return 0; }"
1321     } | check_ld "cc" $pkg_cflags $pkg_libs \
1322       && set_safe "${pkg}_cflags" $pkg_cflags \
1323       && set_safe "${pkg}_libs"   $pkg_libs \
1324       || die "ERROR: $pkg not found"
1325     add_cflags    $(get_safe "${pkg}_cflags")
1326     add_extralibs $(get_safe "${pkg}_libs")
1327 }
1328
1329 hostcc_e(){
1330     eval printf '%s\\n' $HOSTCC_E
1331 }
1332
1333 hostcc_o(){
1334     eval printf '%s\\n' $HOSTCC_O
1335 }
1336
1337 check_host_cc(){
1338     log check_host_cc "$@"
1339     cat > $TMPC
1340     log_file $TMPC
1341     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1342 }
1343
1344 check_host_cpp(){
1345     log check_host_cpp "$@"
1346     cat > $TMPC
1347     log_file $TMPC
1348     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1349 }
1350
1351 check_host_cppflags(){
1352     log check_host_cppflags "$@"
1353     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1354 int x;
1355 EOF
1356 }
1357
1358 check_host_cflags(){
1359     log check_host_cflags "$@"
1360     set -- $($host_cflags_filter "$@")
1361     check_host_cc "$@" <<EOF && append host_cflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cpp_condition(){
1367     log check_host_cpp_condition "$@"
1368     header=$1
1369     condition=$2
1370     shift 2
1371     check_host_cpp "$@" <<EOF
1372 #include <$header>
1373 #if !($condition)
1374 #error "unsatisfied condition: $condition"
1375 #endif
1376 EOF
1377 }
1378
1379 cp_if_changed(){
1380     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1381     mkdir -p "$(dirname $2)"
1382     $cp_f "$1" "$2"
1383 }
1384
1385 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1386 # system-dependent things.
1387
1388 AVCODEC_COMPONENTS="
1389     bsfs
1390     decoders
1391     encoders
1392     hwaccels
1393     parsers
1394 "
1395
1396 AVDEVICE_COMPONENTS="
1397     indevs
1398     outdevs
1399 "
1400 AVFILTER_COMPONENTS="
1401     filters
1402 "
1403 AVFORMAT_COMPONENTS="
1404     demuxers
1405     muxers
1406     protocols
1407 "
1408
1409 AVRESAMPLE_COMPONENTS=""
1410 AVUTIL_COMPONENTS=""
1411
1412 COMPONENT_LIST="
1413     $AVCODEC_COMPONENTS
1414     $AVDEVICE_COMPONENTS
1415     $AVFILTER_COMPONENTS
1416     $AVFORMAT_COMPONENTS
1417     $AVRESAMPLE_COMPONENTS
1418     $AVUTIL_COMPONENTS
1419 "
1420
1421 EXAMPLE_LIST="
1422     avio_reading_example
1423     avio_dir_cmd_example
1424     decoding_encoding_example
1425     demuxing_decoding_example
1426     extract_mvs_example
1427     filter_audio_example
1428     filtering_audio_example
1429     filtering_video_example
1430     metadata_example
1431     muxing_example
1432     qsvdec_example
1433     remuxing_example
1434     resampling_audio_example
1435     scaling_video_example
1436     transcode_aac_example
1437     transcoding_example
1438 "
1439
1440 EXTERNAL_LIBRARY_LIST="
1441     avisynth
1442     bzlib
1443     chromaprint
1444     crystalhd
1445     decklink
1446     frei0r
1447     gcrypt
1448     gmp
1449     gnutls
1450     iconv
1451     ladspa
1452     libaacplus
1453     libass
1454     libbluray
1455     libbs2b
1456     libcaca
1457     libcdio
1458     libcelt
1459     libdc1394
1460     libdcadec
1461     libfaac
1462     libfdk_aac
1463     libflite
1464     libfontconfig
1465     libfreetype
1466     libfribidi
1467     libgme
1468     libgsm
1469     libiec61883
1470     libilbc
1471     libkvazaar
1472     libmfx
1473     libmodplug
1474     libmp3lame
1475     libnut
1476     libopencore_amrnb
1477     libopencore_amrwb
1478     libopencv
1479     libopenh264
1480     libopenjpeg
1481     libopus
1482     libpulse
1483     librtmp
1484     librubberband
1485     libschroedinger
1486     libshine
1487     libsmbclient
1488     libsnappy
1489     libsoxr
1490     libspeex
1491     libssh
1492     libtesseract
1493     libtheora
1494     libtwolame
1495     libutvideo
1496     libv4l2
1497     libvidstab
1498     libvo_aacenc
1499     libvo_amrwbenc
1500     libvorbis
1501     libvpx
1502     libwavpack
1503     libwebp
1504     libx264
1505     libx265
1506     libxavs
1507     libxcb
1508     libxcb_shm
1509     libxcb_shape
1510     libxcb_xfixes
1511     libxvid
1512     libzimg
1513     libzmq
1514     libzvbi
1515     lzma
1516     mmal
1517     netcdf
1518     nvenc
1519     openal
1520     opencl
1521     opengl
1522     openssl
1523     schannel
1524     sdl
1525     securetransport
1526     x11grab
1527     xlib
1528     zlib
1529 "
1530
1531 DOCUMENT_LIST="
1532     doc
1533     htmlpages
1534     manpages
1535     podpages
1536     txtpages
1537 "
1538
1539 FEATURE_LIST="
1540     ftrapv
1541     gray
1542     hardcoded_tables
1543     runtime_cpudetect
1544     safe_bitstream_reader
1545     shared
1546     small
1547     static
1548     swscale_alpha
1549 "
1550
1551 HWACCEL_LIST="
1552     d3d11va
1553     dxva2
1554     vaapi
1555     vda
1556     vdpau
1557     videotoolbox
1558     xvmc
1559 "
1560
1561 LIBRARY_LIST="
1562     avcodec
1563     avdevice
1564     avfilter
1565     avformat
1566     avresample
1567     avutil
1568     postproc
1569     swresample
1570     swscale
1571 "
1572
1573 LICENSE_LIST="
1574     gpl
1575     nonfree
1576     version3
1577 "
1578
1579 PROGRAM_LIST="
1580     ffplay
1581     ffprobe
1582     ffserver
1583     ffmpeg
1584 "
1585
1586 SUBSYSTEM_LIST="
1587     dct
1588     dwt
1589     error_resilience
1590     faan
1591     fast_unaligned
1592     fft
1593     lsp
1594     lzo
1595     mdct
1596     pixelutils
1597     network
1598     rdft
1599 "
1600
1601 CONFIG_LIST="
1602     $COMPONENT_LIST
1603     $DOCUMENT_LIST
1604     $EXAMPLE_LIST
1605     $EXTERNAL_LIBRARY_LIST
1606     $FEATURE_LIST
1607     $HWACCEL_LIST
1608     $LICENSE_LIST
1609     $LIBRARY_LIST
1610     $PROGRAM_LIST
1611     $SUBSYSTEM_LIST
1612     fontconfig
1613     incompatible_libav_abi
1614     memalign_hack
1615     memory_poisoning
1616     neon_clobber_test
1617     pic
1618     pod2man
1619     raise_major
1620     thumb
1621     valgrind_backtrace
1622     xmm_clobber_test
1623 "
1624
1625 THREADS_LIST="
1626     pthreads
1627     os2threads
1628     w32threads
1629 "
1630
1631 ATOMICS_LIST="
1632     atomics_gcc
1633     atomics_suncc
1634     atomics_win32
1635 "
1636
1637 ARCH_LIST="
1638     aarch64
1639     alpha
1640     arm
1641     avr32
1642     avr32_ap
1643     avr32_uc
1644     bfin
1645     ia64
1646     m68k
1647     mips
1648     mips64
1649     parisc
1650     ppc
1651     ppc64
1652     s390
1653     sh4
1654     sparc
1655     sparc64
1656     tilegx
1657     tilepro
1658     tomi
1659     x86
1660     x86_32
1661     x86_64
1662 "
1663
1664 ARCH_EXT_LIST_ARM="
1665     armv5te
1666     armv6
1667     armv6t2
1668     armv8
1669     neon
1670     vfp
1671     vfpv3
1672     setend
1673 "
1674
1675 ARCH_EXT_LIST_MIPS="
1676     mipsfpu
1677     mips32r2
1678     mips64r2
1679     mips32r6
1680     mips64r6
1681     mipsdsp
1682     mipsdspr2
1683     msa
1684 "
1685
1686 ARCH_EXT_LIST_LOONGSON="
1687     loongson2
1688     loongson3
1689     mmi
1690 "
1691
1692 ARCH_EXT_LIST_X86_SIMD="
1693     aesni
1694     amd3dnow
1695     amd3dnowext
1696     avx
1697     avx2
1698     fma3
1699     fma4
1700     mmx
1701     mmxext
1702     sse
1703     sse2
1704     sse3
1705     sse4
1706     sse42
1707     ssse3
1708     xop
1709 "
1710
1711 ARCH_EXT_LIST_PPC="
1712     altivec
1713     dcbzl
1714     ldbrx
1715     power8
1716     ppc4xx
1717     vsx
1718 "
1719
1720 ARCH_EXT_LIST_X86="
1721     $ARCH_EXT_LIST_X86_SIMD
1722     cpunop
1723     i686
1724 "
1725
1726 ARCH_EXT_LIST="
1727     $ARCH_EXT_LIST_ARM
1728     $ARCH_EXT_LIST_PPC
1729     $ARCH_EXT_LIST_X86
1730     $ARCH_EXT_LIST_MIPS
1731     $ARCH_EXT_LIST_LOONGSON
1732 "
1733
1734 ARCH_FEATURES="
1735     aligned_stack
1736     fast_64bit
1737     fast_clz
1738     fast_cmov
1739     local_aligned_8
1740     local_aligned_16
1741     local_aligned_32
1742     simd_align_16
1743 "
1744
1745 BUILTIN_LIST="
1746     atomic_cas_ptr
1747     atomic_compare_exchange
1748     machine_rw_barrier
1749     MemoryBarrier
1750     mm_empty
1751     rdtsc
1752     sarestart
1753     sync_val_compare_and_swap
1754 "
1755 HAVE_LIST_CMDLINE="
1756     inline_asm
1757     symver
1758     yasm
1759 "
1760
1761 HAVE_LIST_PUB="
1762     bigendian
1763     fast_unaligned
1764     incompatible_libav_abi
1765 "
1766
1767 HEADERS_LIST="
1768     alsa_asoundlib_h
1769     altivec_h
1770     arpa_inet_h
1771     asm_types_h
1772     cdio_paranoia_h
1773     cdio_paranoia_paranoia_h
1774     dev_bktr_ioctl_bt848_h
1775     dev_bktr_ioctl_meteor_h
1776     dev_ic_bt8xx_h
1777     dev_video_bktr_ioctl_bt848_h
1778     dev_video_meteor_ioctl_meteor_h
1779     direct_h
1780     dirent_h
1781     dlfcn_h
1782     d3d11_h
1783     dxva_h
1784     ES2_gl_h
1785     gsm_h
1786     io_h
1787     mach_mach_time_h
1788     machine_ioctl_bt848_h
1789     machine_ioctl_meteor_h
1790     malloc_h
1791     opencv2_core_core_c_h
1792     openjpeg_2_1_openjpeg_h
1793     openjpeg_2_0_openjpeg_h
1794     openjpeg_1_5_openjpeg_h
1795     OpenGL_gl3_h
1796     poll_h
1797     sndio_h
1798     soundcard_h
1799     sys_mman_h
1800     sys_param_h
1801     sys_resource_h
1802     sys_select_h
1803     sys_soundcard_h
1804     sys_time_h
1805     sys_un_h
1806     sys_videoio_h
1807     termios_h
1808     udplite_h
1809     unistd_h
1810     valgrind_valgrind_h
1811     windows_h
1812     winsock2_h
1813 "
1814
1815 INTRINSICS_LIST="
1816     intrinsics_neon
1817 "
1818
1819 COMPLEX_FUNCS="
1820     cabs
1821     cexp
1822 "
1823
1824 MATH_FUNCS="
1825     atanf
1826     atan2f
1827     cbrt
1828     cbrtf
1829     copysign
1830     cosf
1831     erf
1832     exp2
1833     exp2f
1834     expf
1835     hypot
1836     isfinite
1837     isinf
1838     isnan
1839     ldexpf
1840     llrint
1841     llrintf
1842     log2
1843     log2f
1844     log10f
1845     lrint
1846     lrintf
1847     powf
1848     rint
1849     round
1850     roundf
1851     sinf
1852     trunc
1853     truncf
1854 "
1855
1856 SYSTEM_FUNCS="
1857     access
1858     aligned_malloc
1859     arc4random
1860     clock_gettime
1861     closesocket
1862     CommandLineToArgvW
1863     CoTaskMemFree
1864     CryptGenRandom
1865     dlopen
1866     fcntl
1867     flt_lim
1868     fork
1869     getaddrinfo
1870     gethrtime
1871     getopt
1872     GetProcessAffinityMask
1873     GetProcessMemoryInfo
1874     GetProcessTimes
1875     getrusage
1876     GetSystemTimeAsFileTime
1877     gettimeofday
1878     glob
1879     glXGetProcAddress
1880     gmtime_r
1881     inet_aton
1882     isatty
1883     jack_port_get_latency_range
1884     kbhit
1885     localtime_r
1886     lstat
1887     lzo1x_999_compress
1888     mach_absolute_time
1889     MapViewOfFile
1890     memalign
1891     mkstemp
1892     mmap
1893     mprotect
1894     nanosleep
1895     PeekNamedPipe
1896     posix_memalign
1897     pthread_cancel
1898     sched_getaffinity
1899     SetConsoleTextAttribute
1900     SetConsoleCtrlHandler
1901     setmode
1902     setrlimit
1903     Sleep
1904     strerror_r
1905     sysconf
1906     sysctl
1907     usleep
1908     UTGetOSTypeFromString
1909     VirtualAlloc
1910     wglGetProcAddress
1911 "
1912
1913 TOOLCHAIN_FEATURES="
1914     as_dn_directive
1915     as_func
1916     as_object_arch
1917     asm_mod_q
1918     attribute_may_alias
1919     attribute_packed
1920     ebp_available
1921     ebx_available
1922     gnu_as
1923     gnu_windres
1924     ibm_asm
1925     inline_asm_direct_symbol_refs
1926     inline_asm_labels
1927     inline_asm_nonlocal_labels
1928     pragma_deprecated
1929     rsync_contimeout
1930     symver_asm_label
1931     symver_gnu_asm
1932     vfp_args
1933     xform_asm
1934     xmm_clobbers
1935 "
1936
1937 TYPES_LIST="
1938     CONDITION_VARIABLE_Ptr
1939     socklen_t
1940     struct_addrinfo
1941     struct_group_source_req
1942     struct_ip_mreq_source
1943     struct_ipv6_mreq
1944     struct_pollfd
1945     struct_rusage_ru_maxrss
1946     struct_sctp_event_subscribe
1947     struct_sockaddr_in6
1948     struct_sockaddr_sa_len
1949     struct_sockaddr_storage
1950     struct_stat_st_mtim_tv_nsec
1951     struct_v4l2_frmivalenum_discrete
1952 "
1953
1954 HAVE_LIST="
1955     $ARCH_EXT_LIST
1956     $(add_suffix _external $ARCH_EXT_LIST)
1957     $(add_suffix _inline   $ARCH_EXT_LIST)
1958     $ARCH_FEATURES
1959     $ATOMICS_LIST
1960     $BUILTIN_LIST
1961     $COMPLEX_FUNCS
1962     $HAVE_LIST_CMDLINE
1963     $HAVE_LIST_PUB
1964     $HEADERS_LIST
1965     $INTRINSICS_LIST
1966     $MATH_FUNCS
1967     $SYSTEM_FUNCS
1968     $THREADS_LIST
1969     $TOOLCHAIN_FEATURES
1970     $TYPES_LIST
1971     atomics_native
1972     dos_paths
1973     dxva2_lib
1974     dxva2api_cobj
1975     libc_msvcrt
1976     libdc1394_1
1977     libdc1394_2
1978     makeinfo
1979     makeinfo_html
1980     perl
1981     pod2man
1982     sdl
1983     section_data_rel_ro
1984     texi2html
1985     threads
1986     vaapi_x11
1987     vdpau_x11
1988     winrt
1989     xlib
1990 "
1991
1992 # options emitted with CONFIG_ prefix but not available on the command line
1993 CONFIG_EXTRA="
1994     aandcttables
1995     ac3dsp
1996     audio_frame_queue
1997     audiodsp
1998     blockdsp
1999     bswapdsp
2000     cabac
2001     dirac_parse
2002     dvprofile
2003     exif
2004     faandct
2005     faanidct
2006     fdctdsp
2007     flacdsp
2008     fmtconvert
2009     frame_thread_encoder
2010     g722dsp
2011     golomb
2012     gplv3
2013     h263dsp
2014     h264chroma
2015     h264dsp
2016     h264pred
2017     h264qpel
2018     hpeldsp
2019     huffman
2020     huffyuvdsp
2021     huffyuvencdsp
2022     idctdsp
2023     iirfilter
2024     imdct15
2025     intrax8
2026     ividsp
2027     jpegtables
2028     lgplv3
2029     libx262
2030     llauddsp
2031     llviddsp
2032     lpc
2033     lzf
2034     me_cmp
2035     mpeg_er
2036     mpegaudio
2037     mpegaudiodsp
2038     mpegvideo
2039     mpegvideoenc
2040     mss34dsp
2041     pixblockdsp
2042     qpeldsp
2043     qsv
2044     qsvdec
2045     qsvenc
2046     rangecoder
2047     riffdec
2048     riffenc
2049     rtpdec
2050     rtpenc_chain
2051     rv34dsp
2052     sinewin
2053     snappy
2054     startcode
2055     texturedsp
2056     texturedspenc
2057     tpeldsp
2058     videodsp
2059     vp3dsp
2060     vp56dsp
2061     vp8dsp
2062     wma_freqs
2063     wmv2dsp
2064 "
2065
2066 CMDLINE_SELECT="
2067     $ARCH_EXT_LIST
2068     $CONFIG_LIST
2069     $HAVE_LIST_CMDLINE
2070     $THREADS_LIST
2071     asm
2072     cross_compile
2073     debug
2074     extra_warnings
2075     logging
2076     lto
2077     optimizations
2078     rpath
2079     stripping
2080 "
2081
2082 PATHS_LIST="
2083     bindir
2084     datadir
2085     docdir
2086     incdir
2087     libdir
2088     mandir
2089     pkgconfigdir
2090     prefix
2091     shlibdir
2092 "
2093
2094 CMDLINE_SET="
2095     $PATHS_LIST
2096     ar
2097     arch
2098     as
2099     assert_level
2100     build_suffix
2101     cc
2102     objcc
2103     cpu
2104     cross_prefix
2105     custom_allocator
2106     cxx
2107     dep_cc
2108     doxygen
2109     env
2110     extra_version
2111     gas
2112     host_cc
2113     host_cflags
2114     host_ld
2115     host_ldflags
2116     host_libs
2117     host_os
2118     install
2119     ld
2120     logfile
2121     malloc_prefix
2122     nm
2123     optflags
2124     pkg_config
2125     pkg_config_flags
2126     progs_suffix
2127     random_seed
2128     ranlib
2129     samples
2130     strip
2131     sws_max_filter_size
2132     sysinclude
2133     sysroot
2134     target_exec
2135     target_os
2136     target_path
2137     target_samples
2138     tempprefix
2139     toolchain
2140     valgrind
2141     yasmexe
2142 "
2143
2144 CMDLINE_APPEND="
2145     extra_cflags
2146     extra_cxxflags
2147     extra_objcflags
2148     host_cppflags
2149 "
2150
2151 # code dependency declarations
2152
2153 # architecture extensions
2154
2155 armv5te_deps="arm"
2156 armv6_deps="arm"
2157 armv6t2_deps="arm"
2158 armv8_deps="aarch64"
2159 neon_deps_any="aarch64 arm"
2160 intrinsics_neon_deps="neon"
2161 vfp_deps_any="aarch64 arm"
2162 vfpv3_deps="vfp"
2163 setend_deps="arm"
2164
2165 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2166
2167 mipsfpu_deps="mips"
2168 mipsdsp_deps="mips"
2169 mipsdspr2_deps="mips"
2170 mips32r2_deps="mips"
2171 mips32r6_deps="mips"
2172 mips64r2_deps="mips"
2173 mips64r6_deps="mips"
2174 msa_deps="mips"
2175 mmi_deps="mips"
2176
2177 altivec_deps="ppc"
2178 dcbzl_deps="ppc"
2179 ldbrx_deps="ppc"
2180 ppc4xx_deps="ppc"
2181 vsx_deps="altivec"
2182 power8_deps="vsx"
2183
2184 cpunop_deps="i686"
2185 x86_64_select="i686"
2186 x86_64_suggest="fast_cmov"
2187
2188 amd3dnow_deps="mmx"
2189 amd3dnowext_deps="amd3dnow"
2190 i686_deps="x86"
2191 mmx_deps="x86"
2192 mmxext_deps="mmx"
2193 sse_deps="mmxext"
2194 sse2_deps="sse"
2195 sse3_deps="sse2"
2196 ssse3_deps="sse3"
2197 sse4_deps="ssse3"
2198 sse42_deps="sse4"
2199 aesni_deps="sse42"
2200 avx_deps="sse42"
2201 xop_deps="avx"
2202 fma3_deps="avx"
2203 fma4_deps="avx"
2204 avx2_deps="avx"
2205
2206 mmx_external_deps="yasm"
2207 mmx_inline_deps="inline_asm"
2208 mmx_suggest="mmx_external mmx_inline"
2209
2210 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2211     eval dep=\$${ext}_deps
2212     eval ${ext}_external_deps='"${dep}_external"'
2213     eval ${ext}_inline_deps='"${dep}_inline"'
2214     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2215 done
2216
2217 aligned_stack_if_any="aarch64 ppc x86"
2218 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2219 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2220 fast_unaligned_if_any="aarch64 ppc x86"
2221 simd_align_16_if_any="altivec neon sse"
2222
2223 # system capabilities
2224 symver_if_any="symver_asm_label symver_gnu_asm"
2225 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2226
2227 # threading support
2228 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2229 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2230 atomics_win32_if="MemoryBarrier"
2231 atomics_native_if_any="$ATOMICS_LIST"
2232 w32threads_deps="atomics_native"
2233 threads_if_any="$THREADS_LIST"
2234
2235 # subsystems
2236 dct_select="rdft"
2237 dirac_parse_select="golomb"
2238 error_resilience_select="me_cmp"
2239 faandct_deps="faan fdctdsp"
2240 faanidct_deps="faan idctdsp"
2241 frame_thread_encoder_deps="encoders threads"
2242 intrax8_select="error_resilience"
2243 mdct_select="fft"
2244 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2245 mpeg_er_select="error_resilience"
2246 mpegaudio_select="mpegaudiodsp"
2247 mpegaudiodsp_select="dct"
2248 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2249 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2250 qsvdec_select="qsv"
2251 qsvenc_select="qsv"
2252 rdft_select="fft"
2253
2254 # decoders / encoders
2255 aac_decoder_select="imdct15 mdct sinewin"
2256 aac_fixed_decoder_select="mdct sinewin"
2257 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2258 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2259 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2260 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2261 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2262 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2263 adpcm_g722_decoder_select="g722dsp"
2264 adpcm_g722_encoder_select="g722dsp"
2265 aic_decoder_select="golomb idctdsp"
2266 alac_encoder_select="lpc"
2267 als_decoder_select="bswapdsp"
2268 amrnb_decoder_select="lsp"
2269 amrwb_decoder_select="lsp"
2270 amv_decoder_select="sp5x_decoder exif"
2271 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2272 ape_decoder_select="bswapdsp llauddsp"
2273 apng_decoder_select="zlib"
2274 apng_encoder_select="huffyuvencdsp zlib"
2275 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2276 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2277 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2278 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2279 atrac1_decoder_select="mdct sinewin"
2280 atrac3_decoder_select="mdct"
2281 atrac3p_decoder_select="mdct sinewin"
2282 avrn_decoder_select="exif jpegtables"
2283 bink_decoder_select="blockdsp hpeldsp"
2284 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2285 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2286 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2287 cllc_decoder_select="bswapdsp"
2288 comfortnoise_encoder_select="lpc"
2289 cook_decoder_select="audiodsp mdct sinewin"
2290 cscd_decoder_select="lzo"
2291 cscd_decoder_suggest="zlib"
2292 dca_decoder_select="fmtconvert mdct"
2293 dds_decoder_select="texturedsp"
2294 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2295 dnxhd_decoder_select="blockdsp idctdsp"
2296 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2297 dvvideo_decoder_select="dvprofile idctdsp"
2298 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2299 dxa_decoder_select="zlib"
2300 dxv_decoder_select="lzf texturedsp"
2301 eac3_decoder_select="ac3_decoder"
2302 eac3_encoder_select="ac3_encoder"
2303 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2304 eatgq_decoder_select="aandcttables"
2305 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2306 exr_decoder_select="zlib"
2307 ffv1_decoder_select="golomb rangecoder"
2308 ffv1_encoder_select="rangecoder"
2309 ffvhuff_decoder_select="huffyuv_decoder"
2310 ffvhuff_encoder_select="huffyuv_encoder"
2311 fic_decoder_select="golomb"
2312 flac_decoder_select="flacdsp golomb"
2313 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2314 flashsv2_decoder_select="zlib"
2315 flashsv2_encoder_select="zlib"
2316 flashsv_decoder_select="zlib"
2317 flashsv_encoder_select="zlib"
2318 flv_decoder_select="h263_decoder"
2319 flv_encoder_select="h263_encoder"
2320 fourxm_decoder_select="blockdsp bswapdsp"
2321 fraps_decoder_select="bswapdsp huffman"
2322 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2323 g729_decoder_select="audiodsp"
2324 h261_decoder_select="mpegvideo"
2325 h261_encoder_select="aandcttables mpegvideoenc"
2326 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2327 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2328 h263i_decoder_select="h263_decoder"
2329 h263p_decoder_select="h263_decoder"
2330 h263p_encoder_select="h263_encoder"
2331 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2332 h264_decoder_suggest="error_resilience"
2333 h264_qsv_decoder_deps="libmfx"
2334 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2335 h264_qsv_encoder_deps="libmfx"
2336 h264_qsv_encoder_select="qsvenc"
2337 hap_decoder_select="snappy texturedsp"
2338 hap_encoder_deps="libsnappy"
2339 hap_encoder_select="texturedspenc"
2340 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2341 hevc_qsv_decoder_deps="libmfx"
2342 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2343 hevc_qsv_encoder_deps="libmfx"
2344 hevc_qsv_encoder_select="qsvenc"
2345 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2346 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2347 iac_decoder_select="imc_decoder"
2348 imc_decoder_select="bswapdsp fft mdct sinewin"
2349 indeo3_decoder_select="hpeldsp"
2350 indeo4_decoder_select="ividsp"
2351 indeo5_decoder_select="ividsp"
2352 interplay_video_decoder_select="hpeldsp"
2353 jpegls_decoder_select="golomb mjpeg_decoder"
2354 jpegls_encoder_select="golomb"
2355 jv_decoder_select="blockdsp"
2356 lagarith_decoder_select="huffyuvdsp"
2357 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2358 loco_decoder_select="golomb"
2359 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2360 metasound_decoder_select="lsp mdct sinewin"
2361 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2362 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2363 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2364 mjpegb_decoder_select="mjpeg_decoder"
2365 mlp_decoder_select="mlp_parser"
2366 motionpixels_decoder_select="bswapdsp"
2367 mp1_decoder_select="mpegaudio"
2368 mp1float_decoder_select="mpegaudio"
2369 mp2_decoder_select="mpegaudio"
2370 mp2float_decoder_select="mpegaudio"
2371 mp3_decoder_select="mpegaudio"
2372 mp3adu_decoder_select="mpegaudio"
2373 mp3adufloat_decoder_select="mpegaudio"
2374 mp3float_decoder_select="mpegaudio"
2375 mp3on4_decoder_select="mpegaudio"
2376 mp3on4float_decoder_select="mpegaudio"
2377 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2378 mpc8_decoder_select="mpegaudiodsp"
2379 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2380 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2381 mpegvideo_decoder_select="mpegvideo"
2382 mpeg1video_decoder_select="mpegvideo"
2383 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2384 mpeg2video_decoder_select="mpegvideo"
2385 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2386 mpeg2_qsv_decoder_deps="libmfx"
2387 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2388 mpeg2_qsv_encoder_deps="libmfx"
2389 mpeg2_qsv_encoder_select="qsvenc"
2390 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2391 mpeg4_encoder_select="h263_encoder"
2392 msa1_decoder_select="mss34dsp"
2393 msmpeg4v1_decoder_select="h263_decoder"
2394 msmpeg4v2_decoder_select="h263_decoder"
2395 msmpeg4v2_encoder_select="h263_encoder"
2396 msmpeg4v3_decoder_select="h263_decoder"
2397 msmpeg4v3_encoder_select="h263_encoder"
2398 mss2_decoder_select="vc1_decoder"
2399 mts2_decoder_select="mss34dsp"
2400 mxpeg_decoder_select="mjpeg_decoder"
2401 nellymoser_decoder_select="mdct sinewin"
2402 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2403 nuv_decoder_select="idctdsp lzo"
2404 on2avc_decoder_select="mdct"
2405 opus_decoder_deps="swresample"
2406 opus_decoder_select="imdct15"
2407 png_decoder_select="zlib"
2408 png_encoder_select="huffyuvencdsp zlib"
2409 prores_decoder_select="blockdsp idctdsp"
2410 prores_encoder_select="fdctdsp"
2411 qcelp_decoder_select="lsp"
2412 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2413 ra_144_decoder_select="audiodsp"
2414 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2415 ralf_decoder_select="golomb"
2416 rawvideo_decoder_select="bswapdsp"
2417 rscc_decoder_select="zlib"
2418 rtjpeg_decoder_select="me_cmp"
2419 rv10_decoder_select="h263_decoder"
2420 rv10_encoder_select="h263_encoder"
2421 rv20_decoder_select="h263_decoder"
2422 rv20_encoder_select="h263_encoder"
2423 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2424 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2425 screenpresso_decoder_select="zlib"
2426 shorten_decoder_select="golomb"
2427 sipr_decoder_select="lsp"
2428 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2429 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2430 sonic_decoder_select="golomb rangecoder"
2431 sonic_encoder_select="golomb rangecoder"
2432 sonic_ls_encoder_select="golomb rangecoder"
2433 sp5x_decoder_select="mjpeg_decoder"
2434 svq1_decoder_select="hpeldsp"
2435 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2436 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2437 svq3_decoder_suggest="zlib"
2438 tak_decoder_select="audiodsp"
2439 tdsc_decoder_select="zlib mjpeg_decoder"
2440 theora_decoder_select="vp3_decoder"
2441 thp_decoder_select="mjpeg_decoder"
2442 tiff_decoder_suggest="zlib lzma"
2443 tiff_encoder_suggest="zlib"
2444 truehd_decoder_select="mlp_parser"
2445 truemotion2_decoder_select="bswapdsp"
2446 truespeech_decoder_select="bswapdsp"
2447 tscc_decoder_select="zlib"
2448 twinvq_decoder_select="mdct lsp sinewin"
2449 txd_decoder_select="texturedsp"
2450 utvideo_decoder_select="bswapdsp"
2451 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2452 vble_decoder_select="huffyuvdsp"
2453 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2454 vc1_qsv_decoder_deps="libmfx"
2455 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2456 vc1image_decoder_select="vc1_decoder"
2457 vorbis_decoder_select="mdct"
2458 vorbis_encoder_select="mdct"
2459 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2460 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2461 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2462 vp6a_decoder_select="vp6_decoder"
2463 vp6f_decoder_select="vp6_decoder"
2464 vp7_decoder_select="h264pred videodsp vp8dsp"
2465 vp8_decoder_select="h264pred videodsp vp8dsp"
2466 vp9_decoder_select="videodsp vp9_parser"
2467 webp_decoder_select="vp8_decoder exif"
2468 wmalossless_decoder_select="llauddsp"
2469 wmapro_decoder_select="mdct sinewin wma_freqs"
2470 wmav1_decoder_select="mdct sinewin wma_freqs"
2471 wmav1_encoder_select="mdct sinewin wma_freqs"
2472 wmav2_decoder_select="mdct sinewin wma_freqs"
2473 wmav2_encoder_select="mdct sinewin wma_freqs"
2474 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2475 wmv1_decoder_select="h263_decoder"
2476 wmv1_encoder_select="h263_encoder"
2477 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2478 wmv2_encoder_select="h263_encoder wmv2dsp"
2479 wmv3_decoder_select="vc1_decoder"
2480 wmv3image_decoder_select="wmv3_decoder"
2481 xma1_decoder_select="wmapro_decoder"
2482 xma2_decoder_select="wmapro_decoder"
2483 zerocodec_decoder_select="zlib"
2484 zlib_decoder_select="zlib"
2485 zlib_encoder_select="zlib"
2486 zmbv_decoder_select="zlib"
2487 zmbv_encoder_select="zlib"
2488
2489 # hardware accelerators
2490 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2491 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2492 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2493 vaapi_deps="va_va_h"
2494 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2495 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2496 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2497 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2498 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2499 xvmc_deps="X11_extensions_XvMClib_h"
2500
2501 h263_vaapi_hwaccel_deps="vaapi"
2502 h263_vaapi_hwaccel_select="h263_decoder"
2503 h263_videotoolbox_hwaccel_deps="videotoolbox"
2504 h263_videotoolbox_hwaccel_select="h263_decoder"
2505 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2506 h264_d3d11va_hwaccel_deps="d3d11va"
2507 h264_d3d11va_hwaccel_select="h264_decoder"
2508 h264_dxva2_hwaccel_deps="dxva2"
2509 h264_dxva2_hwaccel_select="h264_decoder"
2510 h264_mmal_decoder_deps="mmal"
2511 h264_mmal_decoder_select="h264_decoder"
2512 h264_mmal_encoder_deps="mmal"
2513 h264_mmal_hwaccel_deps="mmal"
2514 h264_qsv_hwaccel_deps="libmfx"
2515 h264_vaapi_hwaccel_deps="vaapi"
2516 h264_vaapi_hwaccel_select="h264_decoder"
2517 h264_vda_decoder_deps="vda"
2518 h264_vda_decoder_select="h264_decoder"
2519 h264_vda_hwaccel_deps="vda"
2520 h264_vda_hwaccel_select="h264_decoder"
2521 h264_vda_old_hwaccel_deps="vda"
2522 h264_vda_old_hwaccel_select="h264_decoder"
2523 h264_vdpau_decoder_deps="vdpau"
2524 h264_vdpau_decoder_select="h264_decoder"
2525 h264_vdpau_hwaccel_deps="vdpau"
2526 h264_vdpau_hwaccel_select="h264_decoder"
2527 h264_videotoolbox_hwaccel_deps="videotoolbox"
2528 h264_videotoolbox_hwaccel_select="h264_decoder"
2529 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2530 hevc_d3d11va_hwaccel_select="hevc_decoder"
2531 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2532 hevc_dxva2_hwaccel_select="hevc_decoder"
2533 hevc_qsv_hwaccel_deps="libmfx"
2534 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2535 hevc_vaapi_hwaccel_select="hevc_decoder"
2536 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2537 hevc_vdpau_hwaccel_select="hevc_decoder"
2538 mpeg_vdpau_decoder_deps="vdpau"
2539 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2540 mpeg_xvmc_hwaccel_deps="xvmc"
2541 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2542 mpeg1_vdpau_decoder_deps="vdpau"
2543 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2544 mpeg1_vdpau_hwaccel_deps="vdpau"
2545 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2546 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2547 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2548 mpeg1_xvmc_hwaccel_deps="xvmc"
2549 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2550 mpeg2_crystalhd_decoder_select="crystalhd"
2551 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2552 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2553 mpeg2_dxva2_hwaccel_deps="dxva2"
2554 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2555 mpeg2_mmal_decoder_deps="mmal"
2556 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2557 mpeg2_mmal_hwaccel_deps="mmal"
2558 mpeg2_qsv_hwaccel_deps="libmfx"
2559 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2560 mpeg2_vaapi_hwaccel_deps="vaapi"
2561 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2562 mpeg2_vdpau_hwaccel_deps="vdpau"
2563 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2564 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2565 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2566 mpeg2_xvmc_hwaccel_deps="xvmc"
2567 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2568 mpeg4_crystalhd_decoder_select="crystalhd"
2569 mpeg4_vaapi_hwaccel_deps="vaapi"
2570 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2571 mpeg4_vdpau_decoder_deps="vdpau"
2572 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2573 mpeg4_vdpau_hwaccel_deps="vdpau"
2574 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2575 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2576 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2577 msmpeg4_crystalhd_decoder_select="crystalhd"
2578 vc1_crystalhd_decoder_select="crystalhd"
2579 vc1_d3d11va_hwaccel_deps="d3d11va"
2580 vc1_d3d11va_hwaccel_select="vc1_decoder"
2581 vc1_dxva2_hwaccel_deps="dxva2"
2582 vc1_dxva2_hwaccel_select="vc1_decoder"
2583 vc1_mmal_decoder_deps="mmal"
2584 vc1_mmal_decoder_select="vc1_decoder"
2585 vc1_mmal_hwaccel_deps="mmal"
2586 vc1_qsv_hwaccel_deps="libmfx"
2587 vc1_qsv_hwaccel_select="qsvdec_vc1"
2588 vc1_vaapi_hwaccel_deps="vaapi"
2589 vc1_vaapi_hwaccel_select="vc1_decoder"
2590 vc1_vdpau_decoder_deps="vdpau"
2591 vc1_vdpau_decoder_select="vc1_decoder"
2592 vc1_vdpau_hwaccel_deps="vdpau"
2593 vc1_vdpau_hwaccel_select="vc1_decoder"
2594 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2595 vp9_d3d11va_hwaccel_select="vp9_decoder"
2596 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2597 vp9_dxva2_hwaccel_select="vp9_decoder"
2598 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2599 vp9_vaapi_hwaccel_select="vp9_decoder"
2600 wmv3_crystalhd_decoder_select="crystalhd"
2601 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2602 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2603 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2604 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2605 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2606
2607 # parsers
2608 h264_parser_select="h264_decoder"
2609 hevc_parser_select="golomb"
2610 mpegvideo_parser_select="mpegvideo"
2611 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2612 vc1_parser_select="mpegvideo startcode vc1_decoder"
2613
2614 # bitstream_filters
2615 mjpeg2jpeg_bsf_select="jpegtables"
2616
2617 # external libraries
2618 chromaprint_muxer_deps="chromaprint"
2619 libaacplus_encoder_deps="libaacplus"
2620 libcelt_decoder_deps="libcelt"
2621 libdcadec_decoder_deps="libdcadec"
2622 libfaac_encoder_deps="libfaac"
2623 libfaac_encoder_select="audio_frame_queue"
2624 libfdk_aac_decoder_deps="libfdk_aac"
2625 libfdk_aac_encoder_deps="libfdk_aac"
2626 libfdk_aac_encoder_select="audio_frame_queue"
2627 libgme_demuxer_deps="libgme"
2628 libgsm_decoder_deps="libgsm"
2629 libgsm_encoder_deps="libgsm"
2630 libgsm_ms_decoder_deps="libgsm"
2631 libgsm_ms_encoder_deps="libgsm"
2632 libilbc_decoder_deps="libilbc"
2633 libilbc_encoder_deps="libilbc"
2634 libkvazaar_encoder_deps="libkvazaar"
2635 libmodplug_demuxer_deps="libmodplug"
2636 libmp3lame_encoder_deps="libmp3lame"
2637 libmp3lame_encoder_select="audio_frame_queue"
2638 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2639 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2640 libopencore_amrnb_encoder_select="audio_frame_queue"
2641 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2642 libopenh264_encoder_deps="libopenh264"
2643 libopenjpeg_decoder_deps="libopenjpeg"
2644 libopenjpeg_encoder_deps="libopenjpeg"
2645 libopus_decoder_deps="libopus"
2646 libopus_encoder_deps="libopus"
2647 libopus_encoder_select="audio_frame_queue"
2648 libschroedinger_decoder_deps="libschroedinger"
2649 libschroedinger_encoder_deps="libschroedinger"
2650 libshine_encoder_deps="libshine"
2651 libshine_encoder_select="audio_frame_queue"
2652 libspeex_decoder_deps="libspeex"
2653 libspeex_encoder_deps="libspeex"
2654 libspeex_encoder_select="audio_frame_queue"
2655 libtheora_encoder_deps="libtheora"
2656 libtwolame_encoder_deps="libtwolame"
2657 libutvideo_decoder_deps="libutvideo"
2658 libutvideo_encoder_deps="libutvideo"
2659 libvo_aacenc_encoder_deps="libvo_aacenc"
2660 libvo_aacenc_encoder_select="audio_frame_queue"
2661 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2662 libvorbis_decoder_deps="libvorbis"
2663 libvorbis_encoder_deps="libvorbis"
2664 libvorbis_encoder_select="audio_frame_queue"
2665 libvpx_vp8_decoder_deps="libvpx"
2666 libvpx_vp8_encoder_deps="libvpx"
2667 libvpx_vp9_decoder_deps="libvpx"
2668 libvpx_vp9_encoder_deps="libvpx"
2669 libwavpack_encoder_deps="libwavpack"
2670 libwebp_encoder_deps="libwebp"
2671 libwebp_anim_encoder_deps="libwebp"
2672 libx262_encoder_deps="libx262"
2673 libx264_encoder_deps="libx264"
2674 libx264rgb_encoder_deps="libx264"
2675 libx264rgb_encoder_select="libx264_encoder"
2676 libx265_encoder_deps="libx265"
2677 libxavs_encoder_deps="libxavs"
2678 libxvid_encoder_deps="libxvid"
2679 libzvbi_teletext_decoder_deps="libzvbi"
2680 nvenc_encoder_deps="nvenc"
2681 nvenc_h264_encoder_deps="nvenc"
2682 nvenc_hevc_encoder_deps="nvenc"
2683
2684 # demuxers / muxers
2685 ac3_demuxer_select="ac3_parser"
2686 asf_demuxer_select="riffdec"
2687 asf_o_demuxer_select="riffdec"
2688 asf_muxer_select="riffenc"
2689 asf_stream_muxer_select="asf_muxer"
2690 avi_demuxer_select="riffdec exif"
2691 avi_muxer_select="riffenc"
2692 avisynth_demuxer_deps="avisynth"
2693 avisynth_demuxer_select="riffdec"
2694 caf_demuxer_select="riffdec"
2695 dash_muxer_select="mp4_muxer"
2696 dirac_demuxer_select="dirac_parser"
2697 dts_demuxer_select="dca_parser"
2698 dtshd_demuxer_select="dca_parser"
2699 dv_demuxer_select="dvprofile"
2700 dv_muxer_select="dvprofile"
2701 dxa_demuxer_select="riffdec"
2702 eac3_demuxer_select="ac3_parser"
2703 f4v_muxer_select="mov_muxer"
2704 flac_demuxer_select="flac_parser"
2705 hds_muxer_select="flv_muxer"
2706 hls_muxer_select="mpegts_muxer"
2707 image2_alias_pix_demuxer_select="image2_demuxer"
2708 image2_brender_pix_demuxer_select="image2_demuxer"
2709 ipod_muxer_select="mov_muxer"
2710 ismv_muxer_select="mov_muxer"
2711 libnut_demuxer_deps="libnut"
2712 libnut_muxer_deps="libnut"
2713 matroska_audio_muxer_select="matroska_muxer"
2714 matroska_demuxer_select="riffdec"
2715 matroska_demuxer_suggest="bzlib lzo zlib"
2716 matroska_muxer_select="riffenc"
2717 mmf_muxer_select="riffenc"
2718 mov_demuxer_select="riffdec"
2719 mov_demuxer_suggest="zlib"
2720 mov_muxer_select="riffenc rtpenc_chain"
2721 mp3_demuxer_select="mpegaudio_parser"
2722 mp4_muxer_select="mov_muxer"
2723 mpegts_muxer_select="adts_muxer latm_muxer"
2724 mpegtsraw_demuxer_select="mpegts_demuxer"
2725 mxf_d10_muxer_select="mxf_muxer"
2726 mxf_opatom_muxer_select="mxf_muxer"
2727 nut_muxer_select="riffenc"
2728 nuv_demuxer_select="riffdec"
2729 oga_muxer_select="ogg_muxer"
2730 ogg_demuxer_select="dirac_parse"
2731 opus_muxer_select="ogg_muxer"
2732 psp_muxer_select="mov_muxer"
2733 rtp_demuxer_select="sdp_demuxer"
2734 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2735 rtsp_demuxer_select="http_protocol rtpdec"
2736 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2737 sap_demuxer_select="sdp_demuxer"
2738 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2739 sdp_demuxer_select="rtpdec"
2740 smoothstreaming_muxer_select="ismv_muxer"
2741 spdif_muxer_select="aac_parser"
2742 spx_muxer_select="ogg_muxer"
2743 swf_demuxer_suggest="zlib"
2744 tak_demuxer_select="tak_parser"
2745 tg2_muxer_select="mov_muxer"
2746 tgp_muxer_select="mov_muxer"
2747 vobsub_demuxer_select="mpegps_demuxer"
2748 w64_demuxer_select="wav_demuxer"
2749 w64_muxer_select="wav_muxer"
2750 wav_demuxer_select="riffdec"
2751 wav_muxer_select="riffenc"
2752 webm_muxer_select="riffenc"
2753 wtv_demuxer_select="riffdec"
2754 wtv_muxer_select="riffenc"
2755 xmv_demuxer_select="riffdec"
2756 xwma_demuxer_select="riffdec"
2757
2758 # indevs / outdevs
2759 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2760 alsa_outdev_deps="alsa_asoundlib_h"
2761 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2762 avfoundation_indev_select="avfoundation"
2763 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2764 caca_outdev_deps="libcaca"
2765 decklink_indev_deps="decklink pthreads"
2766 decklink_indev_extralibs="-lstdc++"
2767 decklink_outdev_deps="decklink pthreads"
2768 decklink_outdev_extralibs="-lstdc++"
2769 dshow_indev_deps="IBaseFilter"
2770 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2771 dv1394_indev_deps="dv1394"
2772 dv1394_indev_select="dv_demuxer"
2773 fbdev_indev_deps="linux_fb_h"
2774 fbdev_outdev_deps="linux_fb_h"
2775 gdigrab_indev_deps="CreateDIBSection"
2776 gdigrab_indev_extralibs="-lgdi32"
2777 gdigrab_indev_select="bmp_decoder"
2778 iec61883_indev_deps="libiec61883"
2779 jack_indev_deps="jack_jack_h sem_timedwait"
2780 lavfi_indev_deps="avfilter"
2781 libcdio_indev_deps="libcdio"
2782 libdc1394_indev_deps="libdc1394"
2783 libv4l2_indev_deps="libv4l2"
2784 openal_indev_deps="openal"
2785 opengl_outdev_deps="opengl"
2786 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2787 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2788 pulse_indev_deps="libpulse"
2789 pulse_outdev_deps="libpulse"
2790 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2791 qtkit_indev_select="qtkit"
2792 sdl_outdev_deps="sdl"
2793 sndio_indev_deps="sndio_h"
2794 sndio_outdev_deps="sndio_h"
2795 v4l_indev_deps="linux_videodev_h"
2796 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2797 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2798 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2799 vfwcap_indev_extralibs="-lavicap32"
2800 x11grab_indev_deps="x11grab"
2801 x11grab_xcb_indev_deps="libxcb"
2802 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2803 xv_outdev_extralibs="-lXv -lX11 -lXext"
2804
2805 # protocols
2806 async_protocol_deps="threads"
2807 bluray_protocol_deps="libbluray"
2808 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2809 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2810 ffrtmpcrypt_protocol_select="tcp_protocol"
2811 ffrtmphttp_protocol_deps="!librtmp_protocol"
2812 ffrtmphttp_protocol_select="http_protocol"
2813 ftp_protocol_select="tcp_protocol"
2814 gopher_protocol_select="network"
2815 http_protocol_select="tcp_protocol"
2816 httpproxy_protocol_select="tcp_protocol"
2817 https_protocol_select="tls_protocol"
2818 icecast_protocol_select="http_protocol"
2819 librtmp_protocol_deps="librtmp"
2820 librtmpe_protocol_deps="librtmp"
2821 librtmps_protocol_deps="librtmp"
2822 librtmpt_protocol_deps="librtmp"
2823 librtmpte_protocol_deps="librtmp"
2824 libsmbclient_protocol_deps="libsmbclient gplv3"
2825 libssh_protocol_deps="libssh"
2826 mmsh_protocol_select="http_protocol"
2827 mmst_protocol_select="network"
2828 rtmp_protocol_deps="!librtmp_protocol"
2829 rtmp_protocol_select="tcp_protocol"
2830 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2831 rtmps_protocol_deps="!librtmp_protocol"
2832 rtmps_protocol_select="tls_protocol"
2833 rtmpt_protocol_select="ffrtmphttp_protocol"
2834 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2835 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2836 rtp_protocol_select="udp_protocol"
2837 sctp_protocol_deps="struct_sctp_event_subscribe"
2838 sctp_protocol_select="network"
2839 srtp_protocol_select="rtp_protocol"
2840 tcp_protocol_select="network"
2841 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2842 tls_gnutls_protocol_select="tcp_protocol"
2843 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2844 tls_openssl_protocol_select="tcp_protocol"
2845 tls_schannel_protocol_deps="schannel"
2846 tls_schannel_protocol_select="tcp_protocol"
2847 tls_securetransport_protocol_deps="securetransport"
2848 tls_securetransport_protocol_select="tcp_protocol"
2849 tls_protocol_select_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2850 udp_protocol_select="network"
2851 udplite_protocol_select="network"
2852 unix_protocol_deps="sys_un_h"
2853 unix_protocol_select="network"
2854
2855 # filters
2856 afftfilt_filter_deps="avcodec"
2857 afftfilt_filter_select="fft"
2858 amovie_filter_deps="avcodec avformat"
2859 aresample_filter_deps="swresample"
2860 ass_filter_deps="libass"
2861 asyncts_filter_deps="avresample"
2862 atempo_filter_deps="avcodec"
2863 atempo_filter_select="rdft"
2864 azmq_filter_deps="libzmq"
2865 blackframe_filter_deps="gpl"
2866 boxblur_filter_deps="gpl"
2867 bs2b_filter_deps="libbs2b"
2868 colormatrix_filter_deps="gpl"
2869 cover_rect_filter_deps="avcodec avformat gpl"
2870 cropdetect_filter_deps="gpl"
2871 delogo_filter_deps="gpl"
2872 deshake_filter_select="pixelutils"
2873 drawtext_filter_deps="libfreetype"
2874 ebur128_filter_deps="gpl"
2875 eq_filter_deps="gpl"
2876 fftfilt_filter_deps="avcodec"
2877 fftfilt_filter_select="rdft"
2878 find_rect_filter_deps="avcodec avformat gpl"
2879 flite_filter_deps="libflite"
2880 frei0r_filter_deps="frei0r dlopen"
2881 frei0r_src_filter_deps="frei0r dlopen"
2882 fspp_filter_deps="gpl"
2883 geq_filter_deps="gpl"
2884 histeq_filter_deps="gpl"
2885 hqdn3d_filter_deps="gpl"
2886 interlace_filter_deps="gpl"
2887 kerndeint_filter_deps="gpl"
2888 ladspa_filter_deps="ladspa dlopen"
2889 mcdeint_filter_deps="avcodec gpl"
2890 movie_filter_deps="avcodec avformat"
2891 mpdecimate_filter_deps="gpl"
2892 mpdecimate_filter_select="pixelutils"
2893 mptestsrc_filter_deps="gpl"
2894 negate_filter_deps="lut_filter"
2895 ocr_filter_deps="libtesseract"
2896 ocv_filter_deps="libopencv"
2897 owdenoise_filter_deps="gpl"
2898 pan_filter_deps="swresample"
2899 perspective_filter_deps="gpl"
2900 phase_filter_deps="gpl"
2901 pp7_filter_deps="gpl"
2902 pp_filter_deps="gpl postproc"
2903 pullup_filter_deps="gpl"
2904 removelogo_filter_deps="avcodec avformat swscale"
2905 repeatfields_filter_deps="gpl"
2906 resample_filter_deps="avresample"
2907 rubberband_filter_deps="librubberband"
2908 sab_filter_deps="gpl swscale"
2909 scale2ref_filter_deps="swscale"
2910 scale_filter_deps="swscale"
2911 select_filter_select="pixelutils"
2912 showcqt_filter_deps="avcodec avformat swscale"
2913 showcqt_filter_select="fft"
2914 showfreqs_filter_deps="avcodec"
2915 showfreqs_filter_select="fft"
2916 showspectrum_filter_deps="avcodec"
2917 showspectrum_filter_select="fft"
2918 showspectrumpic_filter_deps="avcodec"
2919 showspectrumpic_filter_select="fft"
2920 smartblur_filter_deps="gpl swscale"
2921 sofalizer_filter_deps="netcdf avcodec"
2922 sofalizer_filter_select="fft"
2923 spectrumsynth_filter_deps="avcodec"
2924 spectrumsynth_filter_select="fft"
2925 spp_filter_deps="gpl avcodec"
2926 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2927 stereo3d_filter_deps="gpl"
2928 subtitles_filter_deps="avformat avcodec libass"
2929 super2xsai_filter_deps="gpl"
2930 pixfmts_super2xsai_test_deps="super2xsai_filter"
2931 tinterlace_filter_deps="gpl"
2932 tinterlace_merge_test_deps="tinterlace_filter"
2933 tinterlace_pad_test_deps="tinterlace_filter"
2934 uspp_filter_deps="gpl avcodec"
2935 vidstabdetect_filter_deps="libvidstab"
2936 vidstabtransform_filter_deps="libvidstab"
2937 zmq_filter_deps="libzmq"
2938 zoompan_filter_deps="swscale"
2939 zscale_filter_deps="libzimg"
2940
2941 # examples
2942 avcodec_example_deps="avcodec avutil"
2943 avio_dir_cmd="avformat avutil"
2944 avio_reading="avformat avcodec avutil"
2945 decoding_encoding_example_deps="avcodec avformat avutil"
2946 demuxing_decoding_example_deps="avcodec avformat avutil"
2947 extract_mvs_example_deps="avcodec avformat avutil"
2948 filter_audio_example_deps="avfilter avutil"
2949 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2950 filtering_video_example_deps="avfilter avcodec avformat avutil"
2951 metadata_example_deps="avformat avutil"
2952 muxing_example_deps="avcodec avformat avutil swscale"
2953 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2954 remuxing_example_deps="avcodec avformat avutil"
2955 resampling_audio_example_deps="avutil swresample"
2956 scaling_video_example_deps="avutil swscale"
2957 transcode_aac_example_deps="avcodec avformat swresample"
2958 transcoding_example_deps="avfilter avcodec avformat avutil"
2959
2960 # libraries, in linking order
2961 avcodec_deps="avutil"
2962 avdevice_deps="avformat avcodec avutil"
2963 avfilter_deps="avutil"
2964 avformat_deps="avcodec avutil"
2965 avresample_deps="avutil"
2966 postproc_deps="avutil gpl"
2967 swresample_deps="avutil"
2968 swscale_deps="avutil"
2969
2970 # programs
2971 ffmpeg_deps="avcodec avfilter avformat swresample"
2972 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2973                null_filter
2974                setpts_filter trim_filter"
2975 ffplay_deps="avcodec avformat swscale swresample sdl"
2976 ffplay_libs='$sdl_libs'
2977 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2978 ffprobe_deps="avcodec avformat"
2979 ffserver_deps="avformat fork sarestart"
2980 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2981
2982 # documentation
2983 podpages_deps="perl"
2984 manpages_deps="perl pod2man"
2985 htmlpages_deps="perl"
2986 htmlpages_deps_any="makeinfo_html texi2html"
2987 txtpages_deps="perl makeinfo"
2988 doc_deps_any="manpages htmlpages podpages txtpages"
2989
2990 # default parameters
2991
2992 logfile="config.log"
2993
2994 # installation paths
2995 prefix_default="/usr/local"
2996 bindir_default='${prefix}/bin'
2997 datadir_default='${prefix}/share/ffmpeg'
2998 docdir_default='${prefix}/share/doc/ffmpeg'
2999 incdir_default='${prefix}/include'
3000 libdir_default='${prefix}/lib'
3001 mandir_default='${prefix}/share/man'
3002
3003 # toolchain
3004 ar_default="ar"
3005 cc_default="gcc"
3006 cxx_default="g++"
3007 host_cc_default="gcc"
3008 cp_f="cp -f"
3009 doxygen_default="doxygen"
3010 install="install"
3011 ln_s="ln -s -f"
3012 nm_default="nm -g"
3013 objformat="elf"
3014 pkg_config_default=pkg-config
3015 ranlib_default="ranlib"
3016 strip_default="strip"
3017 yasmexe_default="yasm"
3018 windres_default="windres"
3019
3020 # OS
3021 target_os_default=$(tolower $(uname -s))
3022 host_os=$target_os_default
3023
3024 # machine
3025 if test "$target_os_default" = aix; then
3026     arch_default=$(uname -p)
3027     strip_default="strip -X32_64"
3028 else
3029     arch_default=$(uname -m)
3030 fi
3031 cpu="generic"
3032 intrinsics="none"
3033
3034 # configurable options
3035 enable $PROGRAM_LIST
3036 enable $DOCUMENT_LIST
3037 enable $EXAMPLE_LIST
3038 enable $(filter_out avresample $LIBRARY_LIST)
3039 enable stripping
3040
3041 enable asm
3042 enable debug
3043 enable doc
3044 enable faan faandct faanidct
3045 enable optimizations
3046 enable runtime_cpudetect
3047 enable safe_bitstream_reader
3048 enable static
3049 enable swscale_alpha
3050 enable valgrind_backtrace
3051
3052 sws_max_filter_size_default=256
3053 set_default sws_max_filter_size
3054
3055 # Enable hwaccels by default.
3056 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3057 enable xlib
3058
3059 # build settings
3060 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3061 LIBPREF="lib"
3062 LIBSUF=".a"
3063 FULLNAME='$(NAME)$(BUILDSUF)'
3064 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3065 SLIBPREF="lib"
3066 SLIBSUF=".so"
3067 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3068 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3069 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3070 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3071 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3072 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3073
3074 asflags_filter=echo
3075 cflags_filter=echo
3076 ldflags_filter=echo
3077
3078 AS_C='-c'
3079 AS_O='-o $@'
3080 CC_C='-c'
3081 CC_E='-E -o $@'
3082 CC_O='-o $@'
3083 CXX_C='-c'
3084 CXX_O='-o $@'
3085 OBJCC_C='-c'
3086 OBJCC_E='-E -o $@'
3087 OBJCC_O='-o $@'
3088 LD_O='-o $@'
3089 LD_LIB='-l%'
3090 LD_PATH='-L'
3091 HOSTCC_C='-c'
3092 HOSTCC_E='-E -o $@'
3093 HOSTCC_O='-o $@'
3094 HOSTLD_O='-o $@'
3095
3096 host_libs='-lm'
3097 host_cflags_filter=echo
3098 host_ldflags_filter=echo
3099
3100 target_path='$(CURDIR)'
3101
3102 # since the object filename is not given with the -MM flag, the compiler
3103 # is only able to print the basename, and we must add the path ourselves
3104 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3105 DEPFLAGS='-MM'
3106
3107 # find source path
3108 if test -f configure; then
3109     source_path=.
3110 else
3111     source_path=$(cd $(dirname "$0"); pwd)
3112     case "$source_path" in
3113         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3114     esac
3115     test -e "$source_path/config.h" &&
3116         die "Out of tree builds are impossible with config.h in source dir."
3117 fi
3118
3119 for v in "$@"; do
3120     r=${v#*=}
3121     l=${v%"$r"}
3122     r=$(sh_quote "$r")
3123     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3124 done
3125
3126 find_things(){
3127     thing=$1
3128     pattern=$2
3129     file=$source_path/$3
3130     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3131 }
3132
3133 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3134 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3135 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3136 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3137 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3138 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3139 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3140 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3141 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3142 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3143 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3144
3145 ALL_COMPONENTS="
3146     $BSF_LIST
3147     $DECODER_LIST
3148     $DEMUXER_LIST
3149     $ENCODER_LIST
3150     $FILTER_LIST
3151     $HWACCEL_LIST
3152     $INDEV_LIST
3153     $MUXER_LIST
3154     $OUTDEV_LIST
3155     $PARSER_LIST
3156     $PROTOCOL_LIST
3157 "
3158
3159 enable $ARCH_EXT_LIST
3160
3161 die_unknown(){
3162     echo "Unknown option \"$1\"."
3163     echo "See $0 --help for available options."
3164     exit 1
3165 }
3166
3167 print_in_columns() {
3168     cols=$(expr $ncols / 24)
3169     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3170 }
3171
3172 show_list() {
3173     suffix=_$1
3174     shift
3175     echo $* | sed s/$suffix//g | print_in_columns
3176     exit 0
3177 }
3178
3179 rand_list(){
3180     IFS=', '
3181     set -- $*
3182     unset IFS
3183     for thing; do
3184         comp=${thing%:*}
3185         prob=${thing#$comp}
3186         prob=${prob#:}
3187         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3188         echo "prob ${prob:-0.5}"
3189         printf '%s\n' $comp
3190     done
3191 }
3192
3193 do_random(){
3194     action=$1
3195     shift
3196     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3197     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3198 }
3199
3200 for opt do
3201     optval="${opt#*=}"
3202     case "$opt" in
3203         --extra-ldflags=*)
3204             add_ldflags $optval
3205         ;;
3206         --extra-ldexeflags=*)
3207             add_ldexeflags $optval
3208         ;;
3209         --extra-ldlibflags=*)
3210             add_ldlibflags $optval
3211         ;;
3212         --extra-libs=*)
3213             add_extralibs $optval
3214         ;;
3215         --disable-devices)
3216             disable $INDEV_LIST $OUTDEV_LIST
3217         ;;
3218         --enable-debug=*)
3219             debuglevel="$optval"
3220         ;;
3221         --disable-programs)
3222             disable $PROGRAM_LIST
3223         ;;
3224         --disable-everything)
3225             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3226         ;;
3227         --disable-all)
3228             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3229             disable $LIBRARY_LIST $PROGRAM_LIST doc
3230             enable avutil
3231         ;;
3232         --enable-random|--disable-random)
3233             action=${opt%%-random}
3234             do_random ${action#--} $COMPONENT_LIST
3235         ;;
3236         --enable-random=*|--disable-random=*)
3237             action=${opt%%-random=*}
3238             do_random ${action#--} $optval
3239         ;;
3240         --enable-*=*|--disable-*=*)
3241             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3242             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3243             eval list=\$$(toupper $thing)_LIST
3244             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3245             test $action = enable && action="request"
3246             list=$(filter "$name" $list)
3247             [ "$list" = "" ] && warn "Option $opt did not match anything"
3248             $action $list
3249         ;;
3250         --enable-?*|--disable-?*)
3251             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3252             if is_in $option $COMPONENT_LIST; then
3253                 eval $action \$$(toupper ${option%s})_LIST
3254             elif is_in $option $CMDLINE_SELECT; then
3255                 $action $option
3256             else
3257                 die_unknown $opt
3258             fi
3259         ;;
3260         --list-*)
3261             NAME="${opt#--list-}"
3262             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3263             NAME=${NAME%s}
3264             eval show_list $NAME \$$(toupper $NAME)_LIST
3265         ;;
3266         --help|-h) show_help
3267         ;;
3268         --fatal-warnings) enable fatal_warnings
3269         ;;
3270         *)
3271             optname="${opt%%=*}"
3272             optname="${optname#--}"
3273             optname=$(echo "$optname" | sed 's/-/_/g')
3274             if is_in $optname $CMDLINE_SET; then
3275                 eval $optname='$optval'
3276             elif is_in $optname $CMDLINE_APPEND; then
3277                 append $optname "$optval"
3278             else
3279                 die_unknown $opt
3280             fi
3281         ;;
3282     esac
3283 done
3284
3285 for e in $env; do
3286     eval "export $e"
3287 done
3288
3289 disabled logging && logfile=/dev/null
3290
3291 # Disable all the library-specific components if the library itself
3292 # is disabled, see AVCODEC_LIST and following _LIST variables.
3293
3294 disable_components(){
3295     disabled ${1} && disable_weak $(
3296         eval components="\$$(toupper ${1})_COMPONENTS"
3297         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3298     )
3299 }
3300
3301 map 'disable_components $v' $LIBRARY_LIST
3302
3303 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3304
3305 # Mark components that had not been enabled/disabled explicitly
3306 # as enabled
3307
3308 for n in $COMPONENT_LIST; do
3309     v=$(toupper ${n%s})_LIST
3310     eval enable_weak \$$v
3311     eval ${n}_if_any="\$$v"
3312 done
3313
3314 # Make so that disabled libraries are enabled if a component
3315 # of them is requested
3316
3317 for n in $LIBRARY_LIST; do
3318     v=$(toupper ${n})_COMPONENTS
3319     eval ${n}_if_any="\$$v"
3320 done
3321
3322 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3323 set >> $logfile
3324
3325 test -n "$valgrind" && toolchain="valgrind-memcheck"
3326
3327 case "$toolchain" in
3328     clang-asan)
3329         cc_default="clang"
3330         add_cflags  -fsanitize=address
3331         add_ldflags -fsanitize=address
3332     ;;
3333     clang-tsan)
3334         cc_default="clang"
3335         add_cflags  -fsanitize=thread -pie
3336         add_ldflags -fsanitize=thread -pie
3337     ;;
3338     clang-usan)
3339         cc_default="clang"
3340         add_cflags  -fsanitize=undefined
3341         add_ldflags -fsanitize=undefined
3342     ;;
3343     gcc-asan)
3344         cc_default="gcc"
3345         add_cflags  -fsanitize=address
3346         add_ldflags -fsanitize=address
3347     ;;
3348     gcc-tsan)
3349         cc_default="gcc"
3350         add_cflags  -fsanitize=thread -pie -fPIC
3351         add_ldflags -fsanitize=thread -pie -fPIC
3352     ;;
3353     gcc-usan)
3354         cc_default="gcc"
3355         add_cflags  -fsanitize=undefined
3356         add_ldflags -fsanitize=undefined
3357     ;;
3358     valgrind-massif)
3359         target_exec_default=${valgrind:-"valgrind"}
3360         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"
3361     ;;
3362     valgrind-memcheck)
3363         target_exec_default=${valgrind:-"valgrind"}
3364         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3365     ;;
3366     msvc)
3367         # Check whether the current MSVC version needs the C99 converter.
3368         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3369         # support enough of C99 to build ffmpeg. Default to the new
3370         # behaviour if the regexp was unable to match anything, since this
3371         # successfully parses the version number of existing supported
3372         # versions that require the converter (MSVC 2010 and 2012).
3373         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3374         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3375             cc_default="cl"
3376         else
3377             cc_default="c99wrap cl"
3378         fi
3379         ld_default="$source_path/compat/windows/mslink"
3380         nm_default="dumpbin -symbols"
3381         ar_default="lib"
3382         case "$arch" in
3383         arm*)
3384             as_default="armasm"
3385             ;;
3386         esac
3387         target_os_default="win32"
3388         # Use a relative path for TMPDIR. This makes sure all the
3389         # ffconf temp files are written with a relative path, avoiding
3390         # issues with msys/win32 path conversion for MSVC parameters
3391         # such as -Fo<file> or -out:<file>.
3392         TMPDIR=.
3393     ;;
3394     icl)
3395         cc_default="icl"
3396         ld_default="xilink"
3397         nm_default="dumpbin -symbols"
3398         ar_default="xilib"
3399         target_os_default="win32"
3400         TMPDIR=.
3401     ;;
3402     gcov)
3403         add_cflags  -fprofile-arcs -ftest-coverage
3404         add_ldflags -fprofile-arcs -ftest-coverage
3405     ;;
3406     hardened)
3407         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3408         add_cflags   -fno-strict-overflow -fstack-protector-all
3409         add_ldflags  -Wl,-z,relro -Wl,-z,now
3410     ;;
3411     ?*)
3412         die "Unknown toolchain $toolchain"
3413     ;;
3414 esac
3415
3416 test -n "$cross_prefix" && enable cross_compile
3417
3418 if enabled cross_compile; then
3419     test -n "$arch" && test -n "$target_os" ||
3420         die "Must specify target arch and OS when cross-compiling"
3421 fi
3422
3423 ar_default="${cross_prefix}${ar_default}"
3424 cc_default="${cross_prefix}${cc_default}"
3425 cxx_default="${cross_prefix}${cxx_default}"
3426 nm_default="${cross_prefix}${nm_default}"
3427 pkg_config_default="${cross_prefix}${pkg_config_default}"
3428 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3429     ranlib_default="${cross_prefix}${ranlib_default} -D"
3430 else
3431     ranlib_default="${cross_prefix}${ranlib_default}"
3432 fi
3433 strip_default="${cross_prefix}${strip_default}"
3434 windres_default="${cross_prefix}${windres_default}"
3435
3436 sysinclude_default="${sysroot}/usr/include"
3437
3438 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3439     target_exec target_os yasmexe
3440 enabled cross_compile || host_cc_default=$cc
3441 set_default host_cc
3442
3443 pkg_config_fail_message=""
3444 if ! $pkg_config --version >/dev/null 2>&1; then
3445     warn "$pkg_config not found, library detection may fail."
3446     pkg_config=false
3447 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3448     pkg_config_fail_message="
3449 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3450 fi
3451
3452 if test $doxygen != $doxygen_default && \
3453   ! $doxygen --version >/dev/null 2>&1; then
3454     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3455 fi
3456
3457 exesuf() {
3458     case $1 in
3459         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3460     esac
3461 }
3462
3463 EXESUF=$(exesuf $target_os)
3464 HOSTEXESUF=$(exesuf $host_os)
3465
3466 # set temporary file name
3467 : ${TMPDIR:=$TEMPDIR}
3468 : ${TMPDIR:=$TMP}
3469 : ${TMPDIR:=/tmp}
3470
3471 if [ -n "$tempprefix" ] ; then
3472     mktemp(){
3473         echo $tempprefix.${HOSTNAME}.${UID}
3474     }
3475 elif ! check_cmd mktemp -u XXXXXX; then
3476     # simple replacement for missing mktemp
3477     # NOT SAFE FOR GENERAL USE
3478     mktemp(){
3479         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3480     }
3481 fi
3482
3483 tmpfile(){
3484     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3485         (set -C; exec > $tmp) 2>/dev/null ||
3486         die "Unable to create temporary file in $TMPDIR."
3487     append TMPFILES $tmp
3488     eval $1=$tmp
3489 }
3490
3491 trap 'rm -f -- $TMPFILES' EXIT
3492
3493 tmpfile TMPASM .asm
3494 tmpfile TMPC   .c
3495 tmpfile TMPCPP .cpp
3496 tmpfile TMPE   $EXESUF
3497 tmpfile TMPH   .h
3498 tmpfile TMPM   .m
3499 tmpfile TMPO   .o
3500 tmpfile TMPS   .S
3501 tmpfile TMPSH  .sh
3502 tmpfile TMPV   .ver
3503
3504 unset -f mktemp
3505
3506 chmod +x $TMPE
3507
3508 # make sure we can execute files in $TMPDIR
3509 cat > $TMPSH 2>> $logfile <<EOF
3510 #! /bin/sh
3511 EOF
3512 chmod +x $TMPSH >> $logfile 2>&1
3513 if ! $TMPSH >> $logfile 2>&1; then
3514     cat <<EOF
3515 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3516 variable to another directory and make sure that it is not mounted noexec.
3517 EOF
3518     die "Sanity test failed."
3519 fi
3520
3521 armasm_flags(){
3522     for flag; do
3523         case $flag in
3524             # Filter out MSVC cl.exe options from cflags that shouldn't
3525             # be passed to gas-preprocessor
3526             -M[TD]*)                                            ;;
3527             *)                  echo $flag                      ;;
3528         esac
3529    done
3530 }
3531
3532 ccc_flags(){
3533     for flag; do
3534         case $flag in
3535             -std=c99)           echo -c99                       ;;
3536             -mcpu=*)            echo -arch ${flag#*=}           ;;
3537             -mieee)             echo -ieee                      ;;
3538             -O*|-fast)          echo $flag                      ;;
3539             -fno-math-errno)    echo -assume nomath_errno       ;;
3540             -g)                 echo -g3                        ;;
3541             -Wall)              echo -msg_enable level2         ;;
3542             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3543             -Wl,*)              echo $flag                      ;;
3544             -f*|-W*)                                            ;;
3545             *)                  echo $flag                      ;;
3546         esac
3547    done
3548 }
3549
3550 cparser_flags(){
3551     for flag; do
3552         case $flag in
3553             -Wno-switch)             echo -Wno-switch-enum ;;
3554             -Wno-format-zero-length) ;;
3555             -Wdisabled-optimization) ;;
3556             -Wno-pointer-sign)       echo -Wno-other ;;
3557             *)                       echo $flag ;;
3558         esac
3559     done
3560 }
3561
3562 msvc_common_flags(){
3563     for flag; do
3564         case $flag in
3565             # In addition to specifying certain flags under the compiler
3566             # specific filters, they must be specified here as well or else the
3567             # generic catch all at the bottom will print the original flag.
3568             -Wall)                ;;
3569             -std=c99)             ;;
3570             # Common flags
3571             -fomit-frame-pointer) ;;
3572             -g)                   echo -Z7 ;;
3573             -fno-math-errno)      ;;
3574             -fno-common)          ;;
3575             -fno-signed-zeros)    ;;
3576             -fPIC)                ;;
3577             -mthumb)              ;;
3578             -march=*)             ;;
3579             -lz)                  echo zlib.lib ;;
3580             -lavifil32)           echo vfw32.lib ;;
3581             -lavicap32)           echo vfw32.lib user32.lib ;;
3582             -l*)                  echo ${flag#-l}.lib ;;
3583             -LARGEADDRESSAWARE)   echo $flag ;;
3584             -L*)                  echo -libpath:${flag#-L} ;;
3585             *)                    echo $flag ;;
3586         esac
3587     done
3588 }
3589
3590 msvc_flags(){
3591     msvc_common_flags "$@"
3592     for flag; do
3593         case $flag in
3594             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3595                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3596                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3597                                        -wd4307 \
3598                                        -wd4273 -wd4554 -wd4701 ;;
3599         esac
3600     done
3601 }
3602
3603 icl_flags(){
3604     msvc_common_flags "$@"
3605     for flag; do
3606         case $flag in
3607             # Despite what Intel's documentation says -Wall, which is supported
3608             # on Windows, does enable remarks so disable them here.
3609             -Wall)                echo $flag -Qdiag-disable:remark ;;
3610             -std=c99)             echo -Qstd=c99 ;;
3611             -flto)                echo -ipo ;;
3612         esac
3613     done
3614 }
3615
3616 icc_flags(){
3617     for flag; do
3618         case $flag in
3619             -flto)                echo -ipo ;;
3620             *)                    echo $flag ;;
3621         esac
3622     done
3623 }
3624
3625 pgi_flags(){
3626     for flag; do
3627         case $flag in
3628             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3629             -fomit-frame-pointer) echo -Mnoframe ;;
3630             -g)                   echo -gopt ;;
3631             *)                    echo $flag ;;
3632         esac
3633     done
3634 }
3635
3636 suncc_flags(){
3637     for flag; do
3638         case $flag in
3639             -march=*|-mcpu=*)
3640                 case "${flag#*=}" in
3641                     native)                   echo -xtarget=native       ;;
3642                     v9|niagara)               echo -xarch=sparc          ;;
3643                     ultrasparc)               echo -xarch=sparcvis       ;;
3644                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3645                     i586|pentium)             echo -xchip=pentium        ;;
3646                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3647                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3648                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3649                     pentium4*)          echo -xtarget=pentium4           ;;
3650                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3651                     *-sse3)             echo -xarch=sse3                 ;;
3652                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3653                     bonnell)                   echo -xarch=ssse3         ;;
3654                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3655                     westmere)                  echo -xtarget=westmere    ;;
3656                     silvermont)                echo -xarch=sse4_2        ;;
3657                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3658                     core-avx*|ivybridge|haswell|broadwell)
3659                                                echo -xarch=avx           ;;
3660                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3661                     btver1)                    echo -xarch=amdsse4a      ;;
3662                     btver2|bdver*)             echo -xarch=avx           ;;
3663                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3664                     k8|opteron|athlon64|athlon-fx)
3665                                                echo -xarch=sse2a         ;;
3666                     athlon*)                   echo -xarch=pentium_proa  ;;
3667                 esac
3668                 ;;
3669             -std=c99)             echo -xc99              ;;
3670             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3671             -fPIC)                echo -KPIC -xcode=pic32 ;;
3672             -W*,*)                echo $flag              ;;
3673             -f*-*|-W*|-mimpure-text)                      ;;
3674             -shared)              echo -G                 ;;
3675             *)                    echo $flag              ;;
3676         esac
3677     done
3678 }
3679
3680 tms470_flags(){
3681     for flag; do
3682         case $flag in
3683             -march=*|-mcpu=*)
3684                 case "${flag#*=}" in
3685                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3686                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3687                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3688                     armv6*|arm11*)          echo -mv=6   ;;
3689                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3690                                             echo -mv=5e  ;;
3691                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3692                 esac
3693                 ;;
3694             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3695             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3696             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3697             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3698             -msoft-float)   echo --float_support=vfplib       ;;
3699             -O[0-3]|-mf=*)  echo $flag                        ;;
3700             -g)             echo -g -mn                       ;;
3701             -pds=*)         echo $flag                        ;;
3702             -D*|-I*)        echo $flag                        ;;
3703             --gcc|--abi=*)  echo $flag                        ;;
3704             -me)            echo $flag                        ;;
3705         esac
3706     done
3707 }
3708
3709 probe_cc(){
3710     pfx=$1
3711     _cc=$2
3712     first=$3
3713
3714     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3715     unset _ld_o _ldflags _ld_lib _ld_path
3716     unset _depflags _DEPCMD _DEPFLAGS
3717     _flags_filter=echo
3718
3719     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3720         true # no-op to avoid reading stdin in following checks
3721     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3722         _type=llvm_gcc
3723         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3724         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3725         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3726         _cflags_speed='-O3'
3727         _cflags_size='-Os'
3728     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3729         _type=gcc
3730         gcc_version=$($_cc --version | head -n1)
3731         gcc_basever=$($_cc -dumpversion)
3732         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3733         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3734         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3735         case $gcc_basever in
3736             2) ;;
3737             2.*) ;;
3738             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3739         esac
3740         if [ "$first" = true ]; then
3741             case $gcc_basever in
3742                 4.2*)
3743                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3744             esac
3745         fi
3746         _cflags_speed='-O3'
3747         _cflags_size='-Os'
3748     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3749         _type=icc
3750         _ident=$($_cc --version | head -n1)
3751         _depflags='-MMD'
3752         _cflags_speed='-O3'
3753         _cflags_size='-Os'
3754         _cflags_noopt='-O1'
3755         _flags_filter=icc_flags
3756     elif $_cc -v 2>&1 | grep -q xlc; then
3757         _type=xlc
3758         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3759         _cflags_speed='-O5'
3760         _cflags_size='-O5 -qcompact'
3761     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3762         _type=ccc
3763         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3764         _DEPFLAGS='-M'
3765         _cflags_speed='-fast'
3766         _cflags_size='-O1'
3767         _flags_filter=ccc_flags
3768     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3769         test -d "$sysroot" || die "No valid sysroot specified."
3770         _type=armcc
3771         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3772         armcc_conf="$PWD/armcc.conf"
3773         $_cc --arm_linux_configure                 \
3774              --arm_linux_config_file="$armcc_conf" \
3775              --configure_sysroot="$sysroot"        \
3776              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3777              die "Error creating armcc configuration file."
3778         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3779         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3780         as_default="${cross_prefix}gcc"
3781         _depflags='-MMD'
3782         _cflags_speed='-O3'
3783         _cflags_size='-Os'
3784     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3785         _type=tms470
3786         _ident=$($_cc -version | head -n1 | tr -s ' ')
3787         _flags='--gcc --abi=eabi -me'
3788         _cc_e='-ppl -fe=$@'
3789         _cc_o='-fe=$@'
3790         _depflags='-ppa -ppd=$(@:.o=.d)'
3791         _cflags_speed='-O3 -mf=5'
3792         _cflags_size='-O3 -mf=2'
3793         _flags_filter=tms470_flags
3794     elif $_cc -v 2>&1 | grep -q clang; then
3795         _type=clang
3796         _ident=$($_cc --version 2>/dev/null | head -n1)
3797         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3798         _cflags_speed='-O3'
3799         _cflags_size='-Os'
3800     elif $_cc -V 2>&1 | grep -q Sun; then
3801         _type=suncc
3802         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3803         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3804         _DEPFLAGS='-xM1 -xc99'
3805         _ldflags='-std=c99'
3806         _cflags_speed='-O5'
3807         _cflags_size='-O5 -xspace'
3808         _flags_filter=suncc_flags
3809     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3810         _type=pathscale
3811         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3812         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3813         _cflags_speed='-O2'
3814         _cflags_size='-Os'
3815         _flags_filter='filter_out -Wdisabled-optimization'
3816     elif $_cc -v 2>&1 | grep -q Open64; then
3817         _type=open64
3818         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3819         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3820         _cflags_speed='-O2'
3821         _cflags_size='-Os'
3822         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3823     elif $_cc -V 2>&1 | grep -q Portland; then
3824         _type=pgi
3825         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3826         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3827         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3828         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3829         _cflags_noopt="-O"
3830         _flags_filter=pgi_flags
3831     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3832         _type=armasm
3833         _ident=$($_cc | head -n1)
3834         # 4509: "This form of conditional instruction is deprecated"
3835         _flags="-nologo -ignore 4509"
3836         _flags_filter=armasm_flags
3837     elif $_cc 2>&1 | grep -q Intel; then
3838         _type=icl
3839         _ident=$($_cc 2>&1 | head -n1)
3840         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3841         # Not only is O3 broken on 13.x+ but it is slower on all previous
3842         # versions (tested) as well.
3843         _cflags_speed="-O2"
3844         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3845         if $_cc 2>&1 | grep -q Linker; then
3846             _ld_o='-out:$@'
3847         else
3848             _ld_o='-Fe$@'
3849         fi
3850         _cc_o='-Fo$@'
3851         _cc_e='-P'
3852         _flags_filter=icl_flags
3853         _ld_lib='lib%.a'
3854         _ld_path='-libpath:'
3855         # -Qdiag-error to make icl error when seeing certain unknown arguments
3856         _flags='-nologo -Qdiag-error:4044,10157'
3857         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3858         # with MSVC which enables it by default.
3859         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3860         disable stripping
3861     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3862         _type=msvc
3863         _ident=$($_cc 2>&1 | head -n1)
3864         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3865         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3866         _cflags_speed="-O2"
3867         _cflags_size="-O1"
3868         if $_cc -nologo- 2>&1 | grep -q Linker; then
3869             _ld_o='-out:$@'
3870         else
3871             _ld_o='-Fe$@'
3872         fi
3873         _cc_o='-Fo$@'
3874         _cc_e='-P -Fi$@'
3875         _flags_filter=msvc_flags
3876         _ld_lib='lib%.a'
3877         _ld_path='-libpath:'
3878         _flags='-nologo'
3879         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3880         disable stripping
3881     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3882         _type=cparser
3883         _ident=$($_cc --version | head -n1)
3884         _depflags='-MMD'
3885         _cflags_speed='-O4'
3886         _cflags_size='-O2'
3887         _flags_filter=cparser_flags
3888     fi
3889
3890     eval ${pfx}_type=\$_type
3891     eval ${pfx}_ident=\$_ident
3892 }
3893
3894 set_ccvars(){
3895     eval ${1}_C=\${_cc_c-\${${1}_C}}
3896     eval ${1}_E=\${_cc_e-\${${1}_E}}
3897     eval ${1}_O=\${_cc_o-\${${1}_O}}
3898
3899     if [ -n "$_depflags" ]; then
3900         eval ${1}_DEPFLAGS=\$_depflags
3901     else
3902         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3903         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3904         eval DEP${1}FLAGS=\$_flags
3905     fi
3906 }
3907
3908 probe_cc cc "$cc" "true"
3909 cflags_filter=$_flags_filter
3910 cflags_speed=$_cflags_speed
3911 cflags_size=$_cflags_size
3912 cflags_noopt=$_cflags_noopt
3913 add_cflags $_flags $_cflags
3914 cc_ldflags=$_ldflags
3915 set_ccvars CC
3916
3917 probe_cc hostcc "$host_cc"
3918 host_cflags_filter=$_flags_filter
3919 add_host_cflags  $_flags $_cflags
3920 set_ccvars HOSTCC
3921
3922 test -n "$cc_type" && enable $cc_type ||
3923     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3924
3925 : ${as_default:=$cc}
3926 : ${objcc_default:=$cc}
3927 : ${dep_cc_default:=$cc}
3928 : ${ld_default:=$cc}
3929 : ${host_ld_default:=$host_cc}
3930 set_default ar as objcc dep_cc ld host_ld windres
3931
3932 probe_cc as "$as"
3933 asflags_filter=$_flags_filter
3934 add_asflags $_flags $_cflags
3935 set_ccvars AS
3936
3937 probe_cc objcc "$objcc"
3938 objcflags_filter=$_flags_filter
3939 add_objcflags $_flags $_cflags
3940 set_ccvars OBJC
3941
3942 probe_cc ld "$ld"
3943 ldflags_filter=$_flags_filter
3944 add_ldflags $_flags $_ldflags
3945 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3946 LD_O=${_ld_o-$LD_O}
3947 LD_LIB=${_ld_lib-$LD_LIB}
3948 LD_PATH=${_ld_path-$LD_PATH}
3949
3950 probe_cc hostld "$host_ld"
3951 host_ldflags_filter=$_flags_filter
3952 add_host_ldflags $_flags $_ldflags
3953 HOSTLD_O=${_ld_o-$HOSTLD_O}
3954
3955 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3956     probe_cc depcc "$dep_cc"
3957     CCDEP=${_DEPCMD:-$DEPCMD}
3958     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3959     DEPCCFLAGS=$_flags
3960 fi
3961
3962 if $ar 2>&1 | grep -q Microsoft; then
3963     arflags="-nologo"
3964     ar_o='-out:$@'
3965 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3966     arflags="rq"
3967     ar_o='$@'
3968 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3969     arflags='-Xany -r -c'
3970     ar_o='$@'
3971 elif $ar 2>&1 | grep -q "\[D\] "; then
3972     arflags="rcD"
3973     ar_o='$@'
3974 else
3975     arflags="rc"
3976     ar_o='$@'
3977 fi
3978
3979 add_cflags $extra_cflags
3980 add_cxxflags $extra_cxxflags
3981 add_objcflags $extra_objcflags
3982 add_asflags $extra_cflags
3983
3984 if test -n "$sysroot"; then
3985     case "$cc_type" in
3986         gcc|llvm_gcc|clang)
3987             add_cppflags --sysroot="$sysroot"
3988             add_ldflags --sysroot="$sysroot"
3989 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3990             add_cppflags -isysroot "$sysroot"
3991             add_ldflags -isysroot "$sysroot"
3992         ;;
3993         tms470)
3994             add_cppflags -I"$sysinclude"
3995             add_ldflags  --sysroot="$sysroot"
3996         ;;
3997     esac
3998 fi
3999
4000 if test "$cpu" = host; then
4001     enabled cross_compile &&
4002         die "--cpu=host makes no sense when cross-compiling."
4003
4004     case "$cc_type" in
4005         gcc|llvm_gcc)
4006             check_native(){
4007                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4008                 sed -n "/cc1.*$1=/{
4009                             s/.*$1=\\([^ ]*\\).*/\\1/
4010                             p
4011                             q
4012                         }" $TMPE
4013             }
4014             cpu=$(check_native -march || check_native -mcpu)
4015         ;;
4016         clang)
4017             check_native(){
4018                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4019                 sed -n "/cc1.*-target-cpu /{
4020                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4021                             p
4022                             q
4023                         }" $TMPE
4024             }
4025             cpu=$(check_native -march)
4026         ;;
4027     esac
4028
4029     test "${cpu:-host}" = host &&
4030         die "--cpu=host not supported with compiler $cc"
4031 fi
4032
4033 # Deal with common $arch aliases
4034 case "$arch" in
4035     aarch64|arm64)
4036         arch="aarch64"
4037     ;;
4038     arm*|iPad*|iPhone*)
4039         arch="arm"
4040     ;;
4041     mips*|IP*)
4042         case "$arch" in
4043         *el)
4044             add_cppflags -EL
4045             add_ldflags -EL
4046         ;;
4047         *eb)
4048             add_cppflags -EB
4049             add_ldflags -EB
4050         ;;
4051         esac
4052         arch="mips"
4053     ;;
4054     parisc*|hppa*)
4055         arch="parisc"
4056     ;;
4057     "Power Macintosh"|ppc*|powerpc*)
4058         arch="ppc"
4059     ;;
4060     s390|s390x)
4061         arch="s390"
4062     ;;
4063     sh4|sh)
4064         arch="sh4"
4065     ;;
4066     sun4u|sparc*)
4067         arch="sparc"
4068     ;;
4069     tilegx|tile-gx)
4070         arch="tilegx"
4071     ;;
4072     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4073         arch="x86"
4074     ;;
4075 esac
4076
4077 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4078 enable $arch
4079
4080 # Add processor-specific flags
4081 if enabled aarch64; then
4082
4083     case $cpu in
4084         armv*)
4085             cpuflags="-march=$cpu"
4086         ;;
4087         *)
4088             cpuflags="-mcpu=$cpu"
4089         ;;
4090     esac
4091
4092 elif enabled alpha; then
4093
4094     cpuflags="-mcpu=$cpu"
4095
4096 elif enabled arm; then
4097
4098     check_arm_arch() {
4099         check_cpp_condition stddef.h \
4100             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4101             $cpuflags
4102     }
4103
4104     probe_arm_arch() {
4105         if   check_arm_arch 4;        then echo armv4;
4106         elif check_arm_arch 4T;       then echo armv4t;
4107         elif check_arm_arch 5;        then echo armv5;
4108         elif check_arm_arch 5E;       then echo armv5e;
4109         elif check_arm_arch 5T;       then echo armv5t;
4110         elif check_arm_arch 5TE;      then echo armv5te;
4111         elif check_arm_arch 5TEJ;     then echo armv5te;
4112         elif check_arm_arch 6;        then echo armv6;
4113         elif check_arm_arch 6J;       then echo armv6j;
4114         elif check_arm_arch 6K;       then echo armv6k;
4115         elif check_arm_arch 6Z;       then echo armv6z;
4116         elif check_arm_arch 6ZK;      then echo armv6zk;
4117         elif check_arm_arch 6T2;      then echo armv6t2;
4118         elif check_arm_arch 7;        then echo armv7;
4119         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4120         elif check_arm_arch 7S;       then echo armv7-a;
4121         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4122         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4123         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4124         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4125         fi
4126     }
4127
4128     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4129
4130     case $cpu in
4131         armv*)
4132             cpuflags="-march=$cpu"
4133             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4134         ;;
4135         *)
4136             cpuflags="-mcpu=$cpu"
4137             case $cpu in
4138                 cortex-a*)                               subarch=armv7a  ;;
4139                 cortex-r*)                               subarch=armv7r  ;;
4140                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4141                 arm11*)                                  subarch=armv6   ;;
4142                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4143                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4144                 *)                             subarch=$(probe_arm_arch) ;;
4145             esac
4146         ;;
4147     esac
4148
4149     case "$subarch" in
4150         armv5t*)    enable fast_clz                ;;
4151         armv[6-8]*)
4152             enable fast_clz
4153             disabled fast_unaligned || enable fast_unaligned
4154             ;;
4155     esac
4156
4157 elif enabled avr32; then
4158
4159     case $cpu in
4160         ap7[02]0[0-2])
4161             subarch="avr32_ap"
4162             cpuflags="-mpart=$cpu"
4163         ;;
4164         ap)
4165             subarch="avr32_ap"
4166             cpuflags="-march=$cpu"
4167         ;;
4168         uc3[ab]*)
4169             subarch="avr32_uc"
4170             cpuflags="-mcpu=$cpu"
4171         ;;
4172         uc)
4173             subarch="avr32_uc"
4174             cpuflags="-march=$cpu"
4175         ;;
4176     esac
4177
4178 elif enabled bfin; then
4179
4180     cpuflags="-mcpu=$cpu"
4181
4182 elif enabled mips; then
4183
4184     cpuflags="-march=$cpu"
4185
4186     case $cpu in
4187         24kc)
4188             disable mips32r6
4189             disable mips64r2
4190             disable mips64r6
4191             disable mipsfpu
4192             disable mipsdsp
4193             disable mipsdspr2
4194             disable msa
4195         ;;
4196         24kf*)
4197             disable mips32r6
4198             disable mips64r2
4199             disable mips64r6
4200             disable mipsdsp
4201             disable mipsdspr2
4202             disable msa
4203         ;;
4204         24kec|34kc|1004kc)
4205             disable mips32r6
4206             disable mips64r2
4207             disable mips64r6
4208             disable mipsfpu
4209             disable mipsdspr2
4210             disable msa
4211         ;;
4212         24kef*|34kf*|1004kf*)
4213             disable mips32r6
4214             disable mips64r2
4215             disable mips64r6
4216             disable mipsdspr2
4217             disable msa
4218         ;;
4219         74kc)
4220             disable mips32r6
4221             disable mips64r2
4222             disable mips64r6
4223             disable mipsfpu
4224             disable msa
4225         ;;
4226         74kf)
4227             disable mips32r6
4228             disable mips64r2
4229             disable mips64r6
4230             disable msa
4231         ;;
4232         p5600)
4233             disable mips32r6
4234             disable mips64r2
4235             disable mips64r6
4236             disable mipsdsp
4237             disable mipsdspr2
4238             check_cflags "-mtune=p5600" &&
4239             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4240             add_asflags "-mfp64"
4241         ;;
4242         i6400)
4243             disable mips32r2
4244             disable mips32r6
4245             disable mips64r2
4246             disable mipsdsp
4247             disable mipsdspr2
4248             check_cflags "-mtune=i6400 -mabi=64" &&
4249             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4250             check_ldflags "-mabi=64" &&
4251             add_asflags "-mfp64"
4252         ;;
4253         loongson*)
4254             disable mips32r2
4255             disable mips32r6
4256             disable mips64r2
4257             disable mips64r6
4258             disable mipsfpu
4259             disable mipsdsp
4260             disable mipsdspr2
4261             disable msa
4262             enable local_aligned_8 local_aligned_16 local_aligned_32
4263             enable simd_align_16
4264             enable fast_64bit
4265             enable fast_clz
4266             enable fast_cmov
4267             enable fast_unaligned
4268             disable aligned_stack
4269             case $cpu in
4270                 loongson3*)
4271                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4272                 ;;
4273                 loongson2e)
4274                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4275                 ;;
4276                 loongson2f)
4277                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4278                 ;;
4279             esac
4280         ;;
4281         generic)
4282             disable mips64r6
4283             disable msa
4284         ;;
4285         *)
4286             # Unknown CPU. Disable everything.
4287             warn "unknown CPU. Disabling all MIPS optimizations."
4288             disable mipsfpu
4289             disable mips32r2
4290             disable mips32r6
4291             disable mips64r2
4292             disable mips64r6
4293             disable mipsdsp
4294             disable mipsdspr2
4295             disable msa
4296         ;;
4297     esac
4298
4299 elif enabled ppc; then
4300
4301     disable ldbrx
4302
4303     case $(tolower $cpu) in
4304         601|ppc601|powerpc601)
4305             cpuflags="-mcpu=601"
4306             disable altivec
4307         ;;
4308         603*|ppc603*|powerpc603*)
4309             cpuflags="-mcpu=603"
4310             disable altivec
4311         ;;
4312         604*|ppc604*|powerpc604*)
4313             cpuflags="-mcpu=604"
4314             disable altivec
4315         ;;
4316         g3|75*|ppc75*|powerpc75*)
4317             cpuflags="-mcpu=750"
4318             disable altivec
4319         ;;
4320         g4|745*|ppc745*|powerpc745*)
4321             cpuflags="-mcpu=7450"
4322             disable vsx
4323         ;;
4324         74*|ppc74*|powerpc74*)
4325             cpuflags="-mcpu=7400"
4326             disable vsx
4327         ;;
4328         g5|970|ppc970|powerpc970)
4329             cpuflags="-mcpu=970"
4330             disable vsx
4331         ;;
4332         power[3-6]*)
4333             cpuflags="-mcpu=$cpu"
4334             disable vsx
4335         ;;
4336         power[7-8]*)
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339         cell)
4340             cpuflags="-mcpu=cell"
4341             enable ldbrx
4342             disable vsx
4343         ;;
4344         e500mc)
4345             cpuflags="-mcpu=e500mc"
4346             disable altivec
4347         ;;
4348         e500v2)
4349             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4350             disable altivec
4351             disable dcbzl
4352         ;;
4353         e500)
4354             cpuflags="-mcpu=8540 -mhard-float"
4355             disable altivec
4356             disable dcbzl
4357         ;;
4358     esac
4359
4360 elif enabled sparc; then
4361
4362     case $cpu in
4363         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4364             cpuflags="-mcpu=$cpu"
4365         ;;
4366         ultrasparc*|niagara[234])
4367             cpuflags="-mcpu=$cpu"
4368         ;;
4369     esac
4370
4371 elif enabled x86; then
4372
4373     case $cpu in
4374         i[345]86|pentium)
4375             cpuflags="-march=$cpu"
4376             disable i686
4377             disable mmx
4378         ;;
4379         # targets that do NOT support nopl and conditional mov (cmov)
4380         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4381             cpuflags="-march=$cpu"
4382             disable i686
4383         ;;
4384         # targets that do support nopl and conditional mov (cmov)
4385         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4386         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4387             cpuflags="-march=$cpu"
4388             enable i686
4389             enable fast_cmov
4390         ;;
4391         # targets that do support conditional mov but on which it's slow
4392         pentium4|pentium4m|prescott|nocona)
4393             cpuflags="-march=$cpu"
4394             enable i686
4395             disable fast_cmov
4396         ;;
4397     esac
4398
4399 fi
4400
4401 if [ "$cpu" != generic ]; then
4402     add_cflags  $cpuflags
4403     add_asflags $cpuflags
4404     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4405 fi
4406
4407 # compiler sanity check
4408 check_exec <<EOF
4409 int main(void){ return 0; }
4410 EOF
4411 if test "$?" != 0; then
4412     echo "$cc is unable to create an executable file."
4413     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4414         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4415         echo "Only do this if you know what cross compiling means."
4416     fi
4417     die "C compiler test failed."
4418 fi
4419
4420 add_cppflags -D_ISOC99_SOURCE
4421 add_cxxflags -D__STDC_CONSTANT_MACROS
4422 check_cflags -std=c99
4423 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4424 #include <stdlib.h>
4425 EOF
4426 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4427 #include <stdlib.h>
4428 EOF
4429
4430 add_host_cppflags -D_ISOC99_SOURCE
4431 check_host_cflags -std=c99
4432 check_host_cflags -Wall
4433 check_host_cflags -O3
4434
4435 check_64bit(){
4436     arch32=$1
4437     arch64=$2
4438     expr=$3
4439     check_code cc "" "int test[2*($expr) - 1]" &&
4440         subarch=$arch64 || subarch=$arch32
4441 }
4442
4443 case "$arch" in
4444     aarch64|alpha|ia64)
4445         spic=$shared
4446     ;;
4447     mips)
4448         check_64bit mips mips64 '_MIPS_SIM > 1'
4449         spic=$shared
4450     ;;
4451     parisc)
4452         check_64bit parisc parisc64 'sizeof(void *) > 4'
4453         spic=$shared
4454     ;;
4455     ppc)
4456         check_64bit ppc ppc64 'sizeof(void *) > 4'
4457         spic=$shared
4458     ;;
4459     s390)
4460         check_64bit s390 s390x 'sizeof(void *) > 4'
4461         spic=$shared
4462     ;;
4463     sparc)
4464         check_64bit sparc sparc64 'sizeof(void *) > 4'
4465         spic=$shared
4466     ;;
4467     x86)
4468         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4469         # Treat x32 as x64 for now. Note it also needs spic=$shared
4470         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4471             subarch=x86_64
4472         if test "$subarch" = "x86_64"; then
4473             spic=$shared
4474         fi
4475     ;;
4476     ppc)
4477         check_cc <<EOF && subarch="ppc64"
4478         int test[(int)sizeof(char*) - 7];
4479 EOF
4480     ;;
4481 esac
4482
4483 enable $subarch
4484 enabled spic && enable_weak pic
4485
4486 # OS specific
4487 case $target_os in
4488     aix)
4489         SHFLAGS=-shared
4490         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4491         enabled shared && add_ldflags -Wl,-brtl
4492         ;;
4493     android)
4494         disable symver
4495         enable section_data_rel_ro
4496         SLIB_INSTALL_NAME='$(SLIBNAME)'
4497         SLIB_INSTALL_LINKS=
4498         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4499         ;;
4500     haiku)
4501         prefix_default="/boot/common"
4502         network_extralibs="-lnetwork"
4503         host_libs=
4504         ;;
4505     sunos)
4506         SHFLAGS='-shared -Wl,-h,$$(@F)'
4507         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4508         network_extralibs="-lsocket -lnsl"
4509         add_cppflags -D__EXTENSIONS__
4510         # When using suncc to build, the Solaris linker will mark
4511         # an executable with each instruction set encountered by
4512         # the Solaris assembler.  As our libraries contain their own
4513         # guards for processor-specific code, instead suppress
4514         # generation of the HWCAPS ELF section on Solaris x86 only.
4515         enabled_all suncc x86 &&
4516             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4517             add_ldflags -Wl,-M,mapfile
4518         nm_default='nm -P -g'
4519         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4520         ;;
4521     netbsd)
4522         disable symver
4523         oss_indev_extralibs="-lossaudio"
4524         oss_outdev_extralibs="-lossaudio"
4525         enabled gcc || check_ldflags -Wl,-zmuldefs
4526         ;;
4527     openbsd|bitrig)
4528         disable symver
4529         SHFLAGS='-shared'
4530         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4531         SLIB_INSTALL_LINKS=
4532         oss_indev_extralibs="-lossaudio"
4533         oss_outdev_extralibs="-lossaudio"
4534         ;;
4535     dragonfly)
4536         disable symver
4537         ;;
4538     freebsd)
4539         ;;
4540     bsd/os)
4541         add_extralibs -lpoll -lgnugetopt
4542         strip="strip -d"
4543         ;;
4544     darwin)
4545         enabled ppc && add_asflags -force_cpusubtype_ALL
4546         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4547         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4548         strip="${strip} -x"
4549         add_ldflags -Wl,-dynamic,-search_paths_first
4550         SLIBSUF=".dylib"
4551         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4552         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4553         objformat="macho"
4554         enabled x86_64 && objformat="macho64"
4555         enabled_any pic shared x86_64 ||
4556             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4557         ;;
4558     msys*)
4559         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4560         ;;
4561     mingw32*|mingw64*)
4562         if test $target_os = "mingw32ce"; then
4563             disable network
4564         else
4565             target_os=mingw32
4566         fi
4567         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4568         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4569         LIBTARGET=i386
4570         if enabled x86_64; then
4571             LIBTARGET="i386:x86-64"
4572         elif enabled arm; then
4573             LIBTARGET=arm-wince
4574         fi
4575         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4576         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4577         shlibdir_default="$bindir_default"
4578         SLIBPREF=""
4579         SLIBSUF=".dll"
4580         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4581         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4582         dlltool="${cross_prefix}dlltool"
4583         if check_cmd lib.exe -list; then
4584             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4585             if enabled x86_64; then
4586                 LIBTARGET=x64
4587             fi
4588         elif check_cmd $dlltool --version; then
4589             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4590         fi
4591         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4592         SLIB_INSTALL_LINKS=
4593         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4594         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4595         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4596         objformat="win32"
4597         ranlib=:
4598         enable dos_paths
4599         check_ldflags -Wl,--nxcompat,--dynamicbase
4600         # Lets work around some stupidity in binutils.
4601         # ld will strip relocations from executables even though we need them
4602         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4603         # however ld then forgets what the entry point should be (oops) so we
4604         # have to manually (re)set it.
4605         if enabled x86_32; then
4606             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4607         elif enabled x86_64; then
4608             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4609             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4610             # Set image base >4GB for extra entropy with HEASLR
4611             add_ldexeflags -Wl,--image-base,0x140000000
4612             append SHFLAGS -Wl,--image-base,0x180000000
4613         fi
4614         ;;
4615     win32|win64)
4616         disable symver
4617         if enabled shared; then
4618             # Link to the import library instead of the normal static library
4619             # for shared libs.
4620             LD_LIB='%.lib'
4621             # Cannot build both shared and static libs with MSVC or icl.
4622             disable static
4623         fi
4624         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4625         shlibdir_default="$bindir_default"
4626         SLIBPREF=""
4627         SLIBSUF=".dll"
4628         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4629         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4630         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4631         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4632         SLIB_INSTALL_LINKS=
4633         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4634         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4635         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4636         objformat="win32"
4637         ranlib=:
4638         enable dos_paths
4639         ;;
4640     cygwin*)
4641         target_os=cygwin
4642         shlibdir_default="$bindir_default"
4643         SLIBPREF="cyg"
4644         SLIBSUF=".dll"
4645         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4646         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4647         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4648         SLIB_INSTALL_LINKS=
4649         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4650         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4651         objformat="win32"
4652         enable dos_paths
4653         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4654         ;;
4655     *-dos|freedos|opendos)
4656         network_extralibs="-lsocket"
4657         objformat="coff"
4658         enable dos_paths
4659         add_cppflags -U__STRICT_ANSI__
4660         ;;
4661     linux)
4662         enable dv1394
4663         enable section_data_rel_ro
4664         ;;
4665     irix*)
4666         target_os=irix
4667         ranlib="echo ignoring ranlib"
4668         ;;
4669     os/2*)
4670         strip="lxlite -CS"
4671         ln_s="cp -f"
4672         objformat="aout"
4673         add_cppflags -D_GNU_SOURCE
4674         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4675         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4676         LIBSUF="_s.a"
4677         SLIBPREF=""
4678         SLIBSUF=".dll"
4679         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4680         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4681         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4682             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4683             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4684             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4685             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4686         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4687             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4688         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4689         enable dos_paths
4690         enable_weak os2threads
4691         ;;
4692     gnu/kfreebsd)
4693         add_cppflags -D_BSD_SOURCE
4694         ;;
4695     gnu)
4696         ;;
4697     qnx)
4698         add_cppflags -D_QNX_SOURCE
4699         network_extralibs="-lsocket"
4700         ;;
4701     symbian)
4702         SLIBSUF=".dll"
4703         enable dos_paths
4704         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4705         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4706         add_ldflags -Wl,--target1-abs,--no-undefined \
4707                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4708                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4709         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4710                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4711                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4712         ;;
4713     osf1)
4714         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4715         ;;
4716     minix)
4717         ;;
4718     plan9)
4719         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4720                      -D_REENTRANT_SOURCE        \
4721                      -D_RESEARCH_SOURCE         \
4722                      -DFD_SETSIZE=96            \
4723                      -DHAVE_SOCK_OPTS
4724         add_compat strtod.o strtod=avpriv_strtod
4725         network_extralibs='-lbsd'
4726         exeobjs=compat/plan9/main.o
4727         disable ffserver
4728         cp_f='cp'
4729         ;;
4730     none)
4731         ;;
4732     *)
4733         die "Unknown OS '$target_os'."
4734         ;;
4735 esac
4736
4737 # test if creating links works
4738 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4739 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4740 mkdir "$link_dest"
4741 $ln_s "$link_dest" "$link_name"
4742 touch "$link_dest/test_file"
4743 if [ -e "$link_name/test_file" ]; then
4744     # create link to source path
4745     [ -e src ] && rm src
4746     $ln_s "$source_path" src
4747     source_link=src
4748 else
4749     # creating directory links doesn't work
4750     # fall back to using the full source path
4751     source_link="$source_path"
4752 fi
4753 # cleanup
4754 rm -r "$link_dest"
4755 rm -r "$link_name"
4756
4757 # determine libc flavour
4758
4759 probe_libc(){
4760     pfx=$1
4761     pfx_no_=${pfx%_}
4762     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4763     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4764         eval ${pfx}libc_type=uclibc
4765         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4766     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4767         eval ${pfx}libc_type=glibc
4768         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4769     # MinGW headers can be installed on Cygwin, so check for newlib first.
4770     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4771         eval ${pfx}libc_type=newlib
4772         add_${pfx}cppflags -U__STRICT_ANSI__
4773     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4774     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4775         eval ${pfx}libc_type=mingw64
4776         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4777             add_compat msvcrt/snprintf.o
4778             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4779         fi
4780         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4781         eval test \$${pfx_no_}cc_type = "gcc" &&
4782             add_${pfx}cppflags -D__printf__=__gnu_printf__
4783     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4784          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4785         eval ${pfx}libc_type=mingw32
4786         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4787             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4788             die "ERROR: MinGW32 runtime version must be >= 3.15."
4789         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4790         eval test \$${pfx_no_}cc_type = "gcc" &&
4791             add_${pfx}cppflags -D__printf__=__gnu_printf__
4792     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4793         eval ${pfx}libc_type=msvcrt
4794         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4795             if [ "$pfx" = host_ ]; then
4796                 add_host_cppflags -Dsnprintf=_snprintf
4797             else
4798                 add_compat strtod.o strtod=avpriv_strtod
4799                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4800                                              _snprintf=avpriv_snprintf  \
4801                                              vsnprintf=avpriv_vsnprintf
4802             fi
4803         fi
4804         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4805         # 0x601 by default unless something else is set by the user.
4806         # This can easily lead to us detecting functions only present
4807         # in such new versions and producing binaries requiring windows 7.0.
4808         # Therefore explicitly set the default to XP unless the user has
4809         # set something else on the command line.
4810         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4811         # family. For these cases, configure is free to use any functions
4812         # found in the SDK headers by default. (Alternatively, we could force
4813         # _WIN32_WINNT to 0x0602 in that case.)
4814         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4815             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4816 #ifdef WINAPI_FAMILY
4817 #include <winapifamily.h>
4818 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4819 #error not desktop
4820 #endif
4821 #endif
4822 EOF
4823     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4824         eval ${pfx}libc_type=klibc
4825     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4826         eval ${pfx}libc_type=bionic
4827     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4828         eval ${pfx}libc_type=solaris
4829         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4830     fi
4831     check_${pfx}cc <<EOF
4832 #include <time.h>
4833 void *v = localtime_r;
4834 EOF
4835 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4836 #include <time.h>
4837 void *v = localtime_r;
4838 EOF
4839
4840 }
4841
4842 probe_libc
4843 test -n "$libc_type" && enable libc_$libc_type
4844 probe_libc host_
4845 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4846
4847 case $libc_type in
4848     bionic)
4849         add_compat strtod.o strtod=avpriv_strtod
4850         ;;
4851 esac
4852
4853 # hacks for compiler/libc/os combinations
4854
4855 if enabled_all tms470 libc_glibc; then
4856     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4857     add_cppflags -D__USER_LABEL_PREFIX__=
4858     add_cppflags -D__builtin_memset=memset
4859     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4860     add_cflags   -pds=48    # incompatible redefinition of macro
4861 fi
4862
4863 if enabled_all ccc libc_glibc; then
4864     add_ldflags -Wl,-z,now  # calls to libots crash without this
4865 fi
4866
4867 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4868     add_cppflags '-I\$(SRC_PATH)/compat/float'
4869
4870 esc(){
4871     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4872 }
4873
4874 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMP