Merge commit 'd24bd96bdd5b4bae9a9e0055fa8d1104db1283a9'
[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-cuda            enable dynamically linked CUDA [no]
200   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
201   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
202   --enable-frei0r          enable frei0r video filtering [no]
203   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
204                            if openssl, librtmp or gmp is not used [no]
205   --enable-gmp             enable gmp, needed for rtmp(t)e support
206                            if openssl or librtmp is not used [no]
207   --enable-gnutls          enable gnutls, needed for https support
208                            if openssl is not used [no]
209   --disable-iconv          disable iconv [autodetect]
210   --enable-ladspa          enable LADSPA audio filtering [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-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
259   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
260                            native implementation exists [no]
261   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
262   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
263   --enable-libwebp         enable WebP encoding via libwebp [no]
264   --enable-libx264         enable H.264 encoding via x264 [no]
265   --enable-libx265         enable HEVC encoding via x265 [no]
266   --enable-libxavs         enable AVS encoding via xavs [no]
267   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
268   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
269   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
270   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
271   --enable-libxvid         enable Xvid encoding via xvidcore,
272                            native MPEG-4/Xvid encoder exists [no]
273   --enable-libzimg         enable z.lib, needed for zscale filter [no]
274   --enable-libzmq          enable message passing via libzmq [no]
275   --enable-libzvbi         enable teletext support via libzvbi [no]
276   --disable-lzma           disable lzma [autodetect]
277   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
278   --enable-mmal            enable decoding via MMAL [no]
279   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
280   --enable-nvenc           enable NVIDIA NVENC support [no]
281   --enable-openal          enable OpenAL 1.1 capture support [no]
282   --enable-opencl          enable OpenCL code
283   --enable-opengl          enable OpenGL rendering [no]
284   --enable-openssl         enable openssl, needed for https support
285                            if gnutls is not used [no]
286   --disable-schannel       disable SChannel SSP, needed for TLS support on
287                            Windows if openssl and gnutls are not used [autodetect]
288   --disable-sdl            disable sdl [autodetect]
289   --disable-securetransport disable Secure Transport, needed for TLS support
290                            on OSX if openssl and gnutls are not used [autodetect]
291   --enable-x11grab         enable X11 grabbing (legacy) [no]
292   --disable-xlib           disable xlib [autodetect]
293   --disable-zlib           disable zlib [autodetect]
294
295 Toolchain options:
296   --arch=ARCH              select architecture [$arch]
297   --cpu=CPU                select the minimum required CPU (affects
298                            instruction selection, may crash on older CPUs)
299   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
300   --progs-suffix=SUFFIX    program name suffix []
301   --enable-cross-compile   assume a cross-compiler is used
302   --sysroot=PATH           root of cross-build tree
303   --sysinclude=PATH        location of cross-build system headers
304   --target-os=OS           compiler targets OS [$target_os]
305   --target-exec=CMD        command to run executables on target
306   --target-path=DIR        path to view of build directory on target
307   --target-samples=DIR     path to samples directory on target
308   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
309   --toolchain=NAME         set tool defaults according to NAME
310   --nm=NM                  use nm tool NM [$nm_default]
311   --ar=AR                  use archive tool AR [$ar_default]
312   --as=AS                  use assembler AS [$as_default]
313   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
314   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
315   --cc=CC                  use C compiler CC [$cc_default]
316   --cxx=CXX                use C compiler CXX [$cxx_default]
317   --objcc=OCC              use ObjC compiler OCC [$cc_default]
318   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
319   --ld=LD                  use linker LD [$ld_default]
320   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
321   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
322   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
323   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
324   --host-cc=HOSTCC         use host C compiler HOSTCC
325   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
326   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
327   --host-ld=HOSTLD         use host linker HOSTLD
328   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
329   --host-libs=HLIBS        use libs HLIBS when linking for host
330   --host-os=OS             compiler host OS [$target_os]
331   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
332   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
333   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
334   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
335   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
336   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
337   --extra-libs=ELIBS       add ELIBS [$ELIBS]
338   --extra-version=STRING   version string suffix []
339   --optflags=OPTFLAGS      override optimization-related compiler flags
340   --build-suffix=SUFFIX    library name suffix []
341   --enable-pic             build position-independent code
342   --enable-thumb           compile for Thumb instruction set
343   --enable-lto             use link-time optimization
344   --env="ENV=override"     override the environment variables
345
346 Advanced options (experts only):
347   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
348   --custom-allocator=NAME  use a supported custom allocator
349   --disable-symver         disable symbol versioning
350   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
351   --disable-safe-bitstream-reader
352                            disable buffer boundary checking in bitreaders
353                            (faster, but may crash)
354   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
355   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
356
357 Optimization options (experts only):
358   --disable-asm            disable all assembly optimizations
359   --disable-altivec        disable AltiVec optimizations
360   --disable-vsx            disable VSX optimizations
361   --disable-power8         disable POWER8 optimizations
362   --disable-amd3dnow       disable 3DNow! optimizations
363   --disable-amd3dnowext    disable 3DNow! extended optimizations
364   --disable-mmx            disable MMX optimizations
365   --disable-mmxext         disable MMXEXT optimizations
366   --disable-sse            disable SSE optimizations
367   --disable-sse2           disable SSE2 optimizations
368   --disable-sse3           disable SSE3 optimizations
369   --disable-ssse3          disable SSSE3 optimizations
370   --disable-sse4           disable SSE4 optimizations
371   --disable-sse42          disable SSE4.2 optimizations
372   --disable-avx            disable AVX optimizations
373   --disable-xop            disable XOP optimizations
374   --disable-fma3           disable FMA3 optimizations
375   --disable-fma4           disable FMA4 optimizations
376   --disable-avx2           disable AVX2 optimizations
377   --disable-aesni          disable AESNI optimizations
378   --disable-armv5te        disable armv5te optimizations
379   --disable-armv6          disable armv6 optimizations
380   --disable-armv6t2        disable armv6t2 optimizations
381   --disable-vfp            disable VFP optimizations
382   --disable-neon           disable NEON optimizations
383   --disable-inline-asm     disable use of inline assembly
384   --disable-yasm           disable use of nasm/yasm assembly
385   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
386   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
387   --disable-msa            disable MSA optimizations
388   --disable-mipsfpu        disable floating point MIPS optimizations
389   --disable-mmi            disable Loongson SIMD optimizations
390   --disable-fast-unaligned consider unaligned accesses slow
391
392 Developer options (useful when working on FFmpeg itself):
393   --disable-debug          disable debugging symbols
394   --enable-debug=LEVEL     set the debug level [$debuglevel]
395   --disable-optimizations  disable compiler optimizations
396   --enable-extra-warnings  enable more compiler warnings
397   --disable-stripping      disable stripping of executables and shared libraries
398   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
399                            2 causes a slowdown at runtime.
400   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
401   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
402                            leaks and errors, using the specified valgrind binary.
403                            Cannot be combined with --target-exec
404   --enable-ftrapv          Trap arithmetic overflows
405   --samples=PATH           location of test samples for FATE, if not set use
406                            \$FATE_SAMPLES at make invocation time.
407   --enable-neon-clobber-test check NEON registers for clobbering (should be
408                            used only for debugging purposes)
409   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
410                            should be used only for debugging purposes)
411   --enable-random          randomly enable/disable components
412   --disable-random
413   --enable-random=LIST     randomly enable/disable specific components or
414   --disable-random=LIST    component groups. LIST is a comma-separated list
415                            of NAME[:PROB] entries where NAME is a component
416                            (group) and PROB the probability associated with
417                            NAME (default 0.5).
418   --random-seed=VALUE      seed value for --enable/disable-random
419   --disable-valgrind-backtrace do not print a backtrace under Valgrind
420                            (only applies to --disable-optimizations builds)
421
422 NOTE: Object files are built at the place where configure is launched.
423 EOF
424   exit 0
425 }
426
427 quotes='""'
428 if test -t 1 && which tput >/dev/null 2>&1; then
429     ncolors=$(tput colors)
430     if test -n "$ncolors" && test $ncolors -ge 8; then
431         bold_color=$(tput bold)
432         warn_color=$(tput setaf 3)
433         error_color=$(tput setaf 1)
434         reset_color=$(tput sgr0)
435     fi
436     # 72 used instead of 80 since that's the default of pr
437     ncols=$(tput cols)
438 fi
439 : ${ncols:=72}
440
441 log(){
442     echo "$@" >> $logfile
443 }
444
445 log_file(){
446     log BEGIN $1
447     pr -n -t $1 >> $logfile
448     log END $1
449 }
450
451 warn(){
452     log "WARNING: $*"
453     WARNINGS="${WARNINGS}WARNING: $*\n"
454 }
455
456 die(){
457     log "$@"
458     echo "$error_color$bold_color$@$reset_color"
459     cat <<EOF
460
461 If you think configure made a mistake, make sure you are using the latest
462 version from Git.  If the latest version fails, report the problem to the
463 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
464 EOF
465     if disabled logging; then
466         cat <<EOF
467 Rerun configure with logging enabled (do not use --disable-logging), and
468 include the log this produces with your report.
469 EOF
470     else
471         cat <<EOF
472 Include the log file "$logfile" produced by configure as this will help
473 solve the problem.
474 EOF
475     fi
476     exit 1
477 }
478
479 # Avoid locale weirdness, besides we really just want to translate ASCII.
480 toupper(){
481     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
482 }
483
484 tolower(){
485     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
486 }
487
488 c_escape(){
489     echo "$*" | sed 's/["\\]/\\\0/g'
490 }
491
492 sh_quote(){
493     v=$(echo "$1" | sed "s/'/'\\\\''/g")
494     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
495     echo "$v"
496 }
497
498 cleanws(){
499     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
500 }
501
502 filter(){
503     pat=$1
504     shift
505     for v; do
506         eval "case $v in $pat) echo $v ;; esac"
507     done
508 }
509
510 filter_out(){
511     pat=$1
512     shift
513     for v; do
514         eval "case $v in $pat) ;; *) echo $v ;; esac"
515     done
516 }
517
518 map(){
519     m=$1
520     shift
521     for v; do eval $m; done
522 }
523
524 add_suffix(){
525     suffix=$1
526     shift
527     for v; do echo ${v}${suffix}; done
528 }
529
530 set_all(){
531     value=$1
532     shift
533     for var in $*; do
534         eval $var=$value
535     done
536 }
537
538 set_weak(){
539     value=$1
540     shift
541     for var; do
542         eval : \${$var:=$value}
543     done
544 }
545
546 sanitize_var_name(){
547     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
548 }
549
550 set_safe(){
551     var=$1
552     shift
553     eval $(sanitize_var_name "$var")='$*'
554 }
555
556 get_safe(){
557     eval echo \$$(sanitize_var_name "$1")
558 }
559
560 pushvar(){
561     for pvar in $*; do
562         eval level=\${${pvar}_level:=0}
563         eval ${pvar}_${level}="\$$pvar"
564         eval ${pvar}_level=$(($level+1))
565     done
566 }
567
568 popvar(){
569     for pvar in $*; do
570         eval level=\${${pvar}_level:-0}
571         test $level = 0 && continue
572         eval level=$(($level-1))
573         eval $pvar="\${${pvar}_${level}}"
574         eval ${pvar}_level=$level
575         eval unset ${pvar}_${level}
576     done
577 }
578
579 enable(){
580     set_all yes $*
581 }
582
583 disable(){
584     set_all no $*
585 }
586
587 enable_weak(){
588     set_weak yes $*
589 }
590
591 disable_weak(){
592     set_weak no $*
593 }
594
595 enable_safe(){
596     for var; do
597         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
598     done
599 }
600
601 disable_safe(){
602     for var; do
603         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
604     done
605 }
606
607 do_enable_deep(){
608     for var; do
609         enabled $var && continue
610         eval sel="\$${var}_select"
611         eval sgs="\$${var}_suggest"
612         pushvar var sgs
613         enable_deep $sel
614         popvar sgs
615         enable_deep_weak $sgs
616         popvar var
617     done
618 }
619
620 enable_deep(){
621     do_enable_deep $*
622     enable $*
623 }
624
625 enable_deep_weak(){
626     for var; do
627         disabled $var && continue
628         pushvar var
629         do_enable_deep $var
630         popvar var
631         enable_weak $var
632     done
633 }
634
635 enabled(){
636     test "${1#!}" = "$1" && op='=' || op=!=
637     eval test "x\$${1#!}" $op "xyes"
638 }
639
640 disabled(){
641     test "${1#!}" = "$1" && op='=' || op=!=
642     eval test "x\$${1#!}" $op "xno"
643 }
644
645 enabled_all(){
646     for opt; do
647         enabled $opt || return 1
648     done
649 }
650
651 disabled_all(){
652     for opt; do
653         disabled $opt || return 1
654     done
655 }
656
657 enabled_any(){
658     for opt; do
659         enabled $opt && return 0
660     done
661 }
662
663 disabled_any(){
664     for opt; do
665         disabled $opt && return 0
666     done
667     return 1
668 }
669
670 set_default(){
671     for opt; do
672         eval : \${$opt:=\$${opt}_default}
673     done
674 }
675
676 is_in(){
677     value=$1
678     shift
679     for var in $*; do
680         [ $var = $value ] && return 0
681     done
682     return 1
683 }
684
685 do_check_deps(){
686     for cfg; do
687         cfg="${cfg#!}"
688         enabled ${cfg}_checking && die "Circular dependency for $cfg."
689         disabled ${cfg}_checking && continue
690         enable ${cfg}_checking
691         append allopts $cfg
692
693         eval dep_all="\$${cfg}_deps"
694         eval dep_any="\$${cfg}_deps_any"
695         eval dep_sel="\$${cfg}_select"
696         eval dep_sgs="\$${cfg}_suggest"
697         eval dep_ifa="\$${cfg}_if"
698         eval dep_ifn="\$${cfg}_if_any"
699
700         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
701         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
702         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
703
704         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
705         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
706         enabled_all  $dep_all || disable $cfg
707         enabled_any  $dep_any || disable $cfg
708         disabled_any $dep_sel && disable $cfg
709
710         if enabled $cfg; then
711             enable_deep $dep_sel
712             enable_deep_weak $dep_sgs
713         fi
714
715         disable ${cfg}_checking
716     done
717 }
718
719 check_deps(){
720     unset allopts
721
722     do_check_deps "$@"
723
724     for cfg in $allopts; do
725         enabled $cfg || continue
726         eval dep_extralibs="\$${cfg}_extralibs"
727         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
728     done
729 }
730
731 print_config(){
732     pfx=$1
733     files=$2
734     shift 2
735     map 'eval echo "$v \${$v:-no}"' "$@" |
736     awk "BEGIN { split(\"$files\", files) }
737         {
738             c = \"$pfx\" toupper(\$1);
739             v = \$2;
740             sub(/yes/, 1, v);
741             sub(/no/,  0, v);
742             for (f in files) {
743                 file = files[f];
744                 if (file ~ /\\.h\$/) {
745                     printf(\"#define %s %d\\n\", c, v) >>file;
746                 } else if (file ~ /\\.asm\$/) {
747                     printf(\"%%define %s %d\\n\", c, v) >>file;
748                 } else if (file ~ /\\.mak\$/) {
749                     n = -v ? \"\" : \"!\";
750                     printf(\"%s%s=yes\\n\", n, c) >>file;
751                 } else if (file ~ /\\.texi\$/) {
752                     pre = -v ? \"\" : \"@c \";
753                     yesno = \$2;
754                     c2 = tolower(c);
755                     gsub(/_/, \"-\", c2);
756                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
757                 }
758             }
759         }"
760 }
761
762 print_enabled(){
763     suf=$1
764     shift
765     for v; do
766         enabled $v && printf "%s\n" ${v%$suf};
767     done
768 }
769
770 append(){
771     var=$1
772     shift
773     eval "$var=\"\$$var $*\""
774 }
775
776 prepend(){
777     var=$1
778     shift
779     eval "$var=\"$* \$$var\""
780 }
781
782 unique(){
783     var=$1
784     uniq_list=""
785     for tok in $(eval echo \$$var); do
786         uniq_list="$(filter_out $tok $uniq_list) $tok"
787     done
788     eval "$var=\"${uniq_list}\""
789 }
790
791 add_cppflags(){
792     append CPPFLAGS "$@"
793 }
794
795 add_cflags(){
796     append CFLAGS $($cflags_filter "$@")
797 }
798
799 add_cxxflags(){
800     append CXXFLAGS $($cflags_filter "$@")
801 }
802
803 add_asflags(){
804     append ASFLAGS $($asflags_filter "$@")
805 }
806
807 add_objcflags(){
808     append OBJCFLAGS $($objcflags_filter "$@")
809 }
810
811 add_ldflags(){
812     append LDFLAGS $($ldflags_filter "$@")
813 }
814
815 add_ldexeflags(){
816     append LDEXEFLAGS $($ldflags_filter "$@")
817 }
818
819 add_ldlibflags(){
820     append LDLIBFLAGS $($ldflags_filter "$@")
821 }
822
823 add_stripflags(){
824     append ASMSTRIPFLAGS "$@"
825 }
826
827 add_extralibs(){
828     prepend extralibs $($ldflags_filter "$@")
829 }
830
831 add_host_cppflags(){
832     append host_cppflags "$@"
833 }
834
835 add_host_cflags(){
836     append host_cflags $($host_cflags_filter "$@")
837 }
838
839 add_host_ldflags(){
840     append host_ldflags $($host_ldflags_filter "$@")
841 }
842
843 add_compat(){
844     append compat_objs $1
845     shift
846     map 'add_cppflags -D$v' "$@"
847 }
848
849 check_cmd(){
850     log "$@"
851     "$@" >> $logfile 2>&1
852 }
853
854 check_stat(){
855     log check_stat "$@"
856     stat "$1" >> $logfile 2>&1
857 }
858
859 cc_o(){
860     eval printf '%s\\n' $CC_O
861 }
862
863 cc_e(){
864     eval printf '%s\\n' $CC_E
865 }
866
867 check_cc(){
868     log check_cc "$@"
869     cat > $TMPC
870     log_file $TMPC
871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
872 }
873
874 check_cxx(){
875     log check_cxx "$@"
876     cat > $TMPCPP
877     log_file $TMPCPP
878     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
879 }
880
881 check_objcc(){
882     log check_objcc "$@"
883     cat > $TMPM
884     log_file $TMPM
885     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
886 }
887
888 check_cpp(){
889     log check_cpp "$@"
890     cat > $TMPC
891     log_file $TMPC
892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
893 }
894
895 as_o(){
896     eval printf '%s\\n' $AS_O
897 }
898
899 check_as(){
900     log check_as "$@"
901     cat > $TMPS
902     log_file $TMPS
903     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
904 }
905
906 check_inline_asm(){
907     log check_inline_asm "$@"
908     name="$1"
909     code="$2"
910     shift 2
911     disable $name
912     check_cc "$@" <<EOF && enable $name
913 void foo(void){ __asm__ volatile($code); }
914 EOF
915 }
916
917 check_insn(){
918     log check_insn "$@"
919     check_inline_asm ${1}_inline "\"$2\""
920     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
921 }
922
923 check_yasm(){
924     log check_yasm "$@"
925     echo "$1" > $TMPS
926     log_file $TMPS
927     shift 1
928     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
929 }
930
931 ld_o(){
932     eval printf '%s\\n' $LD_O
933 }
934
935 check_ld(){
936     log check_ld "$@"
937     type=$1
938     shift 1
939     flags=$(filter_out '-l*|*.so' $@)
940     libs=$(filter '-l*|*.so' $@)
941     check_$type $($cflags_filter $flags) || return
942     flags=$($ldflags_filter $flags)
943     libs=$($ldflags_filter $libs)
944     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
945 }
946
947 print_include(){
948     hdr=$1
949     test "${hdr%.h}" = "${hdr}" &&
950         echo "#include $hdr"    ||
951         echo "#include <$hdr>"
952 }
953
954 check_code(){
955     log check_code "$@"
956     check=$1
957     headers=$2
958     code=$3
959     shift 3
960     {
961         for hdr in $headers; do
962             print_include $hdr
963         done
964         echo "int main(void) { $code; return 0; }"
965     } | check_$check "$@"
966 }
967
968 check_cppflags(){
969     log check_cppflags "$@"
970     check_cc "$@" <<EOF && append CPPFLAGS "$@"
971 int x;
972 EOF
973 }
974
975 test_cflags(){
976     log test_cflags "$@"
977     set -- $($cflags_filter "$@")
978     check_cc "$@" <<EOF
979 int x;
980 EOF
981 }
982
983 check_cflags(){
984     log check_cflags "$@"
985     test_cflags "$@" && add_cflags "$@"
986 }
987
988 check_cxxflags(){
989     log check_cxxflags "$@"
990     set -- $($cflags_filter "$@")
991     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
992 int x;
993 EOF
994 }
995
996 test_objcflags(){
997     log test_cflags "$@"
998     set -- $($cflags_filter "$@")
999     check_objcc "$@" <<EOF
1000 int x;
1001 EOF
1002 }
1003
1004 check_objcflags(){
1005     log check_cflags "$@"
1006     test_objcflags "$@" && add_objcflags "$@"
1007 }
1008
1009 test_ldflags(){
1010     log test_ldflags "$@"
1011     check_ld "cc" "$@" <<EOF
1012 int main(void){ return 0; }
1013 EOF
1014 }
1015
1016 check_ldflags(){
1017     log check_ldflags "$@"
1018     test_ldflags "$@" && add_ldflags "$@"
1019 }
1020
1021 test_stripflags(){
1022     log test_stripflags "$@"
1023     # call check_cc to get a fresh TMPO
1024     check_cc <<EOF
1025 int main(void) { return 0; }
1026 EOF
1027     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1028 }
1029
1030 check_stripflags(){
1031     log check_stripflags "$@"
1032     test_stripflags "$@" && add_stripflags "$@"
1033 }
1034
1035 check_header(){
1036     log check_header "$@"
1037     header=$1
1038     shift
1039     disable_safe $header
1040     check_cpp "$@" <<EOF && enable_safe $header
1041 #include <$header>
1042 int x;
1043 EOF
1044 }
1045
1046 check_header_objcc(){
1047     log check_header_objcc "$@"
1048     rm -f -- "$TMPO"
1049     header=$1
1050     shift
1051     disable_safe $header
1052     {
1053        echo "#include <$header>"
1054        echo "int main(void) { return 0; }"
1055     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1056 }
1057
1058 check_func(){
1059     log check_func "$@"
1060     func=$1
1061     shift
1062     disable $func
1063     check_ld "cc" "$@" <<EOF && enable $func
1064 extern int $func();
1065 int main(void){ $func(); }
1066 EOF
1067 }
1068
1069 check_complexfunc(){
1070     log check_complexfunc "$@"
1071     func=$1
1072     narg=$2
1073     shift 2
1074     test $narg = 2 && args="f, g" || args="f * I"
1075     disable $func
1076     check_ld "cc" "$@" <<EOF && enable $func
1077 #include <complex.h>
1078 #include <math.h>
1079 float foo(complex float f, complex float g) { return $func($args); }
1080 int main(void){ return (int) foo; }
1081 EOF
1082 }
1083
1084 check_mathfunc(){
1085     log check_mathfunc "$@"
1086     func=$1
1087     narg=$2
1088     shift 2
1089     test $narg = 2 && args="f, g" || args="f"
1090     disable $func
1091     check_ld "cc" "$@" <<EOF && enable $func
1092 #include <math.h>
1093 float foo(float f, float g) { return $func($args); }
1094 int main(void){ return (int) foo; }
1095 EOF
1096 }
1097
1098 check_func_headers(){
1099     log check_func_headers "$@"
1100     headers=$1
1101     funcs=$2
1102     shift 2
1103     {
1104         for hdr in $headers; do
1105             print_include $hdr
1106         done
1107         for func in $funcs; do
1108             echo "long check_$func(void) { return (long) $func; }"
1109         done
1110         echo "int main(void) { return 0; }"
1111     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1112 }
1113
1114 check_class_headers_cpp(){
1115     log check_class_headers_cpp "$@"
1116     headers=$1
1117     classes=$2
1118     shift 2
1119     {
1120         for hdr in $headers; do
1121             echo "#include <$hdr>"
1122         done
1123         echo "int main(void) { "
1124         i=1
1125         for class in $classes; do
1126             echo "$class obj$i;"
1127             i=$(expr $i + 1)
1128         done
1129         echo "return 0; }"
1130     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1131 }
1132
1133 check_cpp_condition(){
1134     log check_cpp_condition "$@"
1135     header=$1
1136     condition=$2
1137     shift 2
1138     check_cpp "$@" <<EOF
1139 #include <$header>
1140 #if !($condition)
1141 #error "unsatisfied condition: $condition"
1142 #endif
1143 EOF
1144 }
1145
1146 check_lib(){
1147     log check_lib "$@"
1148     header="$1"
1149     func="$2"
1150     shift 2
1151     check_header $header && check_func $func "$@" && add_extralibs "$@"
1152 }
1153
1154 check_lib2(){
1155     log check_lib2 "$@"
1156     headers="$1"
1157     funcs="$2"
1158     shift 2
1159     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1160 }
1161
1162 check_lib_cpp(){
1163     log check_lib_cpp "$@"
1164     headers="$1"
1165     classes="$2"
1166     shift 2
1167     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1168 }
1169
1170 check_pkg_config(){
1171     log check_pkg_config "$@"
1172     pkgandversion="$1"
1173     pkg="${1%% *}"
1174     headers="$2"
1175     funcs="$3"
1176     shift 3
1177     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1178     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1179     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1180     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1181         set_safe "${pkg}_cflags" $pkg_cflags   &&
1182         set_safe "${pkg}_libs"   $pkg_libs
1183 }
1184
1185 check_exec(){
1186     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1187 }
1188
1189 check_exec_crash(){
1190     code=$(cat)
1191
1192     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1193     # are safe but may not be available everywhere.  Thus we use
1194     # raise(SIGTERM) instead.  The check is run in a subshell so we
1195     # can redirect the "Terminated" message from the shell.  SIGBUS
1196     # is not defined by standard C so it is used conditionally.
1197
1198     (check_exec "$@") >> $logfile 2>&1 <<EOF
1199 #include <signal.h>
1200 static void sighandler(int sig){
1201     raise(SIGTERM);
1202 }
1203 int foo(void){
1204     $code
1205 }
1206 int (*func_ptr)(void) = foo;
1207 int main(void){
1208     signal(SIGILL, sighandler);
1209     signal(SIGFPE, sighandler);
1210     signal(SIGSEGV, sighandler);
1211 #ifdef SIGBUS
1212     signal(SIGBUS, sighandler);
1213 #endif
1214     return func_ptr();
1215 }
1216 EOF
1217 }
1218
1219 check_type(){
1220     log check_type "$@"
1221     headers=$1
1222     type=$2
1223     shift 2
1224     disable_safe "$type"
1225     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1226 }
1227
1228 check_struct(){
1229     log check_struct "$@"
1230     headers=$1
1231     struct=$2
1232     member=$3
1233     shift 3
1234     disable_safe "${struct}_${member}"
1235     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1236         enable_safe "${struct}_${member}"
1237 }
1238
1239 check_builtin(){
1240     log check_builtin "$@"
1241     name=$1
1242     headers=$2
1243     builtin=$3
1244     shift 3
1245     disable "$name"
1246     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1247 }
1248
1249 check_compile_assert(){
1250     log check_compile_assert "$@"
1251     name=$1
1252     headers=$2
1253     condition=$3
1254     shift 3
1255     disable "$name"
1256     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1257 }
1258
1259 require(){
1260     name="$1"
1261     header="$2"
1262     func="$3"
1263     shift 3
1264     check_lib $header $func "$@" || die "ERROR: $name not found"
1265 }
1266
1267 require2(){
1268     name="$1"
1269     headers="$2"
1270     func="$3"
1271     shift 3
1272     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1273 }
1274
1275 require_cpp(){
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1281 }
1282
1283 use_pkg_config(){
1284     pkg="$1"
1285     check_pkg_config "$@" || return 1
1286     add_cflags    $(get_safe "${pkg}_cflags")
1287     add_extralibs $(get_safe "${pkg}_libs")
1288 }
1289
1290 require_pkg_config(){
1291     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1292 }
1293
1294 require_libfreetype(){
1295     log require_libfreetype "$@"
1296     pkg="freetype2"
1297     check_cmd $pkg_config --exists --print-errors $pkg \
1298       || die "ERROR: $pkg not found"
1299     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1300     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1301     {
1302         echo "#include <ft2build.h>"
1303         echo "#include FT_FREETYPE_H"
1304         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1305         echo "int main(void) { return 0; }"
1306     } | check_ld "cc" $pkg_cflags $pkg_libs \
1307       && set_safe "${pkg}_cflags" $pkg_cflags \
1308       && set_safe "${pkg}_libs"   $pkg_libs \
1309       || die "ERROR: $pkg not found"
1310     add_cflags    $(get_safe "${pkg}_cflags")
1311     add_extralibs $(get_safe "${pkg}_libs")
1312 }
1313
1314 hostcc_e(){
1315     eval printf '%s\\n' $HOSTCC_E
1316 }
1317
1318 hostcc_o(){
1319     eval printf '%s\\n' $HOSTCC_O
1320 }
1321
1322 check_host_cc(){
1323     log check_host_cc "$@"
1324     cat > $TMPC
1325     log_file $TMPC
1326     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1327 }
1328
1329 check_host_cpp(){
1330     log check_host_cpp "$@"
1331     cat > $TMPC
1332     log_file $TMPC
1333     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1334 }
1335
1336 check_host_cppflags(){
1337     log check_host_cppflags "$@"
1338     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1339 int x;
1340 EOF
1341 }
1342
1343 check_host_cflags(){
1344     log check_host_cflags "$@"
1345     set -- $($host_cflags_filter "$@")
1346     check_host_cc "$@" <<EOF && append host_cflags "$@"
1347 int x;
1348 EOF
1349 }
1350
1351 check_host_cpp_condition(){
1352     log check_host_cpp_condition "$@"
1353     header=$1
1354     condition=$2
1355     shift 2
1356     check_host_cpp "$@" <<EOF
1357 #include <$header>
1358 #if !($condition)
1359 #error "unsatisfied condition: $condition"
1360 #endif
1361 EOF
1362 }
1363
1364 cp_if_changed(){
1365     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1366     mkdir -p "$(dirname $2)"
1367     $cp_f "$1" "$2"
1368 }
1369
1370 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1371 # system-dependent things.
1372
1373 AVCODEC_COMPONENTS="
1374     bsfs
1375     decoders
1376     encoders
1377     hwaccels
1378     parsers
1379 "
1380
1381 AVDEVICE_COMPONENTS="
1382     indevs
1383     outdevs
1384 "
1385 AVFILTER_COMPONENTS="
1386     filters
1387 "
1388 AVFORMAT_COMPONENTS="
1389     demuxers
1390     muxers
1391     protocols
1392 "
1393
1394 AVRESAMPLE_COMPONENTS=""
1395 AVUTIL_COMPONENTS=""
1396
1397 COMPONENT_LIST="
1398     $AVCODEC_COMPONENTS
1399     $AVDEVICE_COMPONENTS
1400     $AVFILTER_COMPONENTS
1401     $AVFORMAT_COMPONENTS
1402     $AVRESAMPLE_COMPONENTS
1403     $AVUTIL_COMPONENTS
1404 "
1405
1406 EXAMPLE_LIST="
1407     avio_reading_example
1408     avio_dir_cmd_example
1409     decoding_encoding_example
1410     demuxing_decoding_example
1411     extract_mvs_example
1412     filter_audio_example
1413     filtering_audio_example
1414     filtering_video_example
1415     metadata_example
1416     muxing_example
1417     qsvdec_example
1418     remuxing_example
1419     resampling_audio_example
1420     scaling_video_example
1421     transcode_aac_example
1422     transcoding_example
1423 "
1424
1425 EXTERNAL_LIBRARY_LIST="
1426     avisynth
1427     bzlib
1428     chromaprint
1429     crystalhd
1430     cuda
1431     decklink
1432     frei0r
1433     gcrypt
1434     gmp
1435     gnutls
1436     iconv
1437     ladspa
1438     libass
1439     libbluray
1440     libbs2b
1441     libcaca
1442     libcdio
1443     libcelt
1444     libdc1394
1445     libdcadec
1446     libfaac
1447     libfdk_aac
1448     libflite
1449     libfontconfig
1450     libfreetype
1451     libfribidi
1452     libgme
1453     libgsm
1454     libiec61883
1455     libilbc
1456     libkvazaar
1457     libmfx
1458     libmodplug
1459     libmp3lame
1460     libnut
1461     libopencore_amrnb
1462     libopencore_amrwb
1463     libopencv
1464     libopenh264
1465     libopenjpeg
1466     libopus
1467     libpulse
1468     librtmp
1469     librubberband
1470     libschroedinger
1471     libshine
1472     libsmbclient
1473     libsnappy
1474     libsoxr
1475     libspeex
1476     libssh
1477     libtesseract
1478     libtheora
1479     libtwolame
1480     libutvideo
1481     libv4l2
1482     libvidstab
1483     libvo_amrwbenc
1484     libvorbis
1485     libvpx
1486     libwavpack
1487     libwebp
1488     libx264
1489     libx265
1490     libxavs
1491     libxcb
1492     libxcb_shm
1493     libxcb_shape
1494     libxcb_xfixes
1495     libxvid
1496     libzimg
1497     libzmq
1498     libzvbi
1499     lzma
1500     mmal
1501     netcdf
1502     nvenc
1503     openal
1504     opencl
1505     opengl
1506     openssl
1507     schannel
1508     sdl
1509     securetransport
1510     x11grab
1511     xlib
1512     zlib
1513 "
1514
1515 DOCUMENT_LIST="
1516     doc
1517     htmlpages
1518     manpages
1519     podpages
1520     txtpages
1521 "
1522
1523 FEATURE_LIST="
1524     ftrapv
1525     gray
1526     hardcoded_tables
1527     runtime_cpudetect
1528     safe_bitstream_reader
1529     shared
1530     small
1531     static
1532     swscale_alpha
1533 "
1534
1535 HWACCEL_LIST="
1536     d3d11va
1537     dxva2
1538     vaapi
1539     vda
1540     vdpau
1541     videotoolbox
1542     xvmc
1543 "
1544
1545 LIBRARY_LIST="
1546     avcodec
1547     avdevice
1548     avfilter
1549     avformat
1550     avresample
1551     avutil
1552     postproc
1553     swresample
1554     swscale
1555 "
1556
1557 LICENSE_LIST="
1558     gpl
1559     nonfree
1560     version3
1561 "
1562
1563 PROGRAM_LIST="
1564     ffplay
1565     ffprobe
1566     ffserver
1567     ffmpeg
1568 "
1569
1570 SUBSYSTEM_LIST="
1571     dct
1572     dwt
1573     error_resilience
1574     faan
1575     fast_unaligned
1576     fft
1577     lsp
1578     lzo
1579     mdct
1580     pixelutils
1581     network
1582     rdft
1583 "
1584
1585 CONFIG_LIST="
1586     $COMPONENT_LIST
1587     $DOCUMENT_LIST
1588     $EXAMPLE_LIST
1589     $EXTERNAL_LIBRARY_LIST
1590     $FEATURE_LIST
1591     $HWACCEL_LIST
1592     $LICENSE_LIST
1593     $LIBRARY_LIST
1594     $PROGRAM_LIST
1595     $SUBSYSTEM_LIST
1596     fontconfig
1597     incompatible_libav_abi
1598     memalign_hack
1599     memory_poisoning
1600     neon_clobber_test
1601     pic
1602     pod2man
1603     raise_major
1604     thumb
1605     valgrind_backtrace
1606     xmm_clobber_test
1607 "
1608
1609 THREADS_LIST="
1610     pthreads
1611     os2threads
1612     w32threads
1613 "
1614
1615 ATOMICS_LIST="
1616     atomics_gcc
1617     atomics_suncc
1618     atomics_win32
1619 "
1620
1621 ARCH_LIST="
1622     aarch64
1623     alpha
1624     arm
1625     avr32
1626     avr32_ap
1627     avr32_uc
1628     bfin
1629     ia64
1630     m68k
1631     mips
1632     mips64
1633     parisc
1634     ppc
1635     ppc64
1636     s390
1637     sh4
1638     sparc
1639     sparc64
1640     tilegx
1641     tilepro
1642     tomi
1643     x86
1644     x86_32
1645     x86_64
1646 "
1647
1648 ARCH_EXT_LIST_ARM="
1649     armv5te
1650     armv6
1651     armv6t2
1652     armv8
1653     neon
1654     vfp
1655     vfpv3
1656     setend
1657 "
1658
1659 ARCH_EXT_LIST_MIPS="
1660     mipsfpu
1661     mips32r2
1662     mips64r2
1663     mips32r6
1664     mips64r6
1665     mipsdsp
1666     mipsdspr2
1667     msa
1668 "
1669
1670 ARCH_EXT_LIST_LOONGSON="
1671     loongson2
1672     loongson3
1673     mmi
1674 "
1675
1676 ARCH_EXT_LIST_X86_SIMD="
1677     aesni
1678     amd3dnow
1679     amd3dnowext
1680     avx
1681     avx2
1682     fma3
1683     fma4
1684     mmx
1685     mmxext
1686     sse
1687     sse2
1688     sse3
1689     sse4
1690     sse42
1691     ssse3
1692     xop
1693 "
1694
1695 ARCH_EXT_LIST_PPC="
1696     altivec
1697     dcbzl
1698     ldbrx
1699     power8
1700     ppc4xx
1701     vsx
1702 "
1703
1704 ARCH_EXT_LIST_X86="
1705     $ARCH_EXT_LIST_X86_SIMD
1706     cpunop
1707     i686
1708 "
1709
1710 ARCH_EXT_LIST="
1711     $ARCH_EXT_LIST_ARM
1712     $ARCH_EXT_LIST_PPC
1713     $ARCH_EXT_LIST_X86
1714     $ARCH_EXT_LIST_MIPS
1715     $ARCH_EXT_LIST_LOONGSON
1716 "
1717
1718 ARCH_FEATURES="
1719     aligned_stack
1720     fast_64bit
1721     fast_clz
1722     fast_cmov
1723     local_aligned_8
1724     local_aligned_16
1725     local_aligned_32
1726     simd_align_16
1727 "
1728
1729 BUILTIN_LIST="
1730     atomic_cas_ptr
1731     atomic_compare_exchange
1732     machine_rw_barrier
1733     MemoryBarrier
1734     mm_empty
1735     rdtsc
1736     sarestart
1737     sem_timedwait
1738     sync_val_compare_and_swap
1739 "
1740 HAVE_LIST_CMDLINE="
1741     inline_asm
1742     symver
1743     yasm
1744 "
1745
1746 HAVE_LIST_PUB="
1747     bigendian
1748     fast_unaligned
1749     incompatible_libav_abi
1750 "
1751
1752 HEADERS_LIST="
1753     alsa_asoundlib_h
1754     altivec_h
1755     arpa_inet_h
1756     asm_types_h
1757     cdio_paranoia_h
1758     cdio_paranoia_paranoia_h
1759     dispatch_dispatch_h
1760     dev_bktr_ioctl_bt848_h
1761     dev_bktr_ioctl_meteor_h
1762     dev_ic_bt8xx_h
1763     dev_video_bktr_ioctl_bt848_h
1764     dev_video_meteor_ioctl_meteor_h
1765     direct_h
1766     dirent_h
1767     dlfcn_h
1768     d3d11_h
1769     dxva_h
1770     ES2_gl_h
1771     gsm_h
1772     io_h
1773     mach_mach_time_h
1774     machine_ioctl_bt848_h
1775     machine_ioctl_meteor_h
1776     malloc_h
1777     opencv2_core_core_c_h
1778     openjpeg_2_1_openjpeg_h
1779     openjpeg_2_0_openjpeg_h
1780     openjpeg_1_5_openjpeg_h
1781     OpenGL_gl3_h
1782     poll_h
1783     sndio_h
1784     soundcard_h
1785     sys_mman_h
1786     sys_param_h
1787     sys_resource_h
1788     sys_select_h
1789     sys_soundcard_h
1790     sys_time_h
1791     sys_un_h
1792     sys_videoio_h
1793     termios_h
1794     udplite_h
1795     unistd_h
1796     valgrind_valgrind_h
1797     windows_h
1798     winsock2_h
1799 "
1800
1801 INTRINSICS_LIST="
1802     intrinsics_neon
1803 "
1804
1805 COMPLEX_FUNCS="
1806     cabs
1807     cexp
1808 "
1809
1810 MATH_FUNCS="
1811     atanf
1812     atan2f
1813     cbrt
1814     cbrtf
1815     copysign
1816     cosf
1817     erf
1818     exp2
1819     exp2f
1820     expf
1821     hypot
1822     isfinite
1823     isinf
1824     isnan
1825     ldexpf
1826     llrint
1827     llrintf
1828     log2
1829     log2f
1830     log10f
1831     lrint
1832     lrintf
1833     powf
1834     rint
1835     round
1836     roundf
1837     sinf
1838     trunc
1839     truncf
1840 "
1841
1842 SYSTEM_FUNCS="
1843     access
1844     aligned_malloc
1845     arc4random
1846     clock_gettime
1847     closesocket
1848     CommandLineToArgvW
1849     CoTaskMemFree
1850     CryptGenRandom
1851     dlopen
1852     fcntl
1853     flt_lim
1854     fork
1855     getaddrinfo
1856     gethrtime
1857     getopt
1858     GetProcessAffinityMask
1859     GetProcessMemoryInfo
1860     GetProcessTimes
1861     getrusage
1862     GetSystemTimeAsFileTime
1863     gettimeofday
1864     glob
1865     glXGetProcAddress
1866     gmtime_r
1867     inet_aton
1868     isatty
1869     jack_port_get_latency_range
1870     kbhit
1871     localtime_r
1872     lstat
1873     lzo1x_999_compress
1874     mach_absolute_time
1875     MapViewOfFile
1876     memalign
1877     mkstemp
1878     mmap
1879     mprotect
1880     nanosleep
1881     PeekNamedPipe
1882     posix_memalign
1883     pthread_cancel
1884     sched_getaffinity
1885     SetConsoleTextAttribute
1886     SetConsoleCtrlHandler
1887     setmode
1888     setrlimit
1889     Sleep
1890     strerror_r
1891     sysconf
1892     sysctl
1893     usleep
1894     UTGetOSTypeFromString
1895     VirtualAlloc
1896     wglGetProcAddress
1897 "
1898
1899 TOOLCHAIN_FEATURES="
1900     as_dn_directive
1901     as_func
1902     as_object_arch
1903     asm_mod_q
1904     attribute_may_alias
1905     attribute_packed
1906     ebp_available
1907     ebx_available
1908     gnu_as
1909     gnu_windres
1910     ibm_asm
1911     inline_asm_direct_symbol_refs
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     pragma_deprecated
1915     rsync_contimeout
1916     symver_asm_label
1917     symver_gnu_asm
1918     vfp_args
1919     xform_asm
1920     xmm_clobbers
1921 "
1922
1923 TYPES_LIST="
1924     CONDITION_VARIABLE_Ptr
1925     socklen_t
1926     struct_addrinfo
1927     struct_group_source_req
1928     struct_ip_mreq_source
1929     struct_ipv6_mreq
1930     struct_pollfd
1931     struct_rusage_ru_maxrss
1932     struct_sctp_event_subscribe
1933     struct_sockaddr_in6
1934     struct_sockaddr_sa_len
1935     struct_sockaddr_storage
1936     struct_stat_st_mtim_tv_nsec
1937     struct_v4l2_frmivalenum_discrete
1938 "
1939
1940 HAVE_LIST="
1941     $ARCH_EXT_LIST
1942     $(add_suffix _external $ARCH_EXT_LIST)
1943     $(add_suffix _inline   $ARCH_EXT_LIST)
1944     $ARCH_FEATURES
1945     $ATOMICS_LIST
1946     $BUILTIN_LIST
1947     $COMPLEX_FUNCS
1948     $HAVE_LIST_CMDLINE
1949     $HAVE_LIST_PUB
1950     $HEADERS_LIST
1951     $INTRINSICS_LIST
1952     $MATH_FUNCS
1953     $SYSTEM_FUNCS
1954     $THREADS_LIST
1955     $TOOLCHAIN_FEATURES
1956     $TYPES_LIST
1957     atomics_native
1958     dos_paths
1959     dxva2_lib
1960     dxva2api_cobj
1961     libc_msvcrt
1962     libdc1394_1
1963     libdc1394_2
1964     makeinfo
1965     makeinfo_html
1966     perl
1967     pod2man
1968     sdl
1969     section_data_rel_ro
1970     texi2html
1971     threads
1972     vaapi_x11
1973     vdpau_x11
1974     winrt
1975     xlib
1976 "
1977
1978 # options emitted with CONFIG_ prefix but not available on the command line
1979 CONFIG_EXTRA="
1980     aandcttables
1981     ac3dsp
1982     audio_frame_queue
1983     audiodsp
1984     blockdsp
1985     bswapdsp
1986     cabac
1987     dirac_parse
1988     dvprofile
1989     exif
1990     faandct
1991     faanidct
1992     fdctdsp
1993     flacdsp
1994     fmtconvert
1995     frame_thread_encoder
1996     g722dsp
1997     golomb
1998     gplv3
1999     h263dsp
2000     h264chroma
2001     h264dsp
2002     h264pred
2003     h264qpel
2004     hpeldsp
2005     huffman
2006     huffyuvdsp
2007     huffyuvencdsp
2008     idctdsp
2009     iirfilter
2010     imdct15
2011     intrax8
2012     iso_media
2013     ividsp
2014     jpegtables
2015     lgplv3
2016     libx262
2017     llauddsp
2018     llviddsp
2019     lpc
2020     lzf
2021     me_cmp
2022     mpeg_er
2023     mpegaudio
2024     mpegaudiodsp
2025     mpegvideo
2026     mpegvideoenc
2027     mss34dsp
2028     pixblockdsp
2029     qpeldsp
2030     qsv
2031     qsvdec
2032     qsvenc
2033     rangecoder
2034     riffdec
2035     riffenc
2036     rtpdec
2037     rtpenc_chain
2038     rv34dsp
2039     sinewin
2040     snappy
2041     startcode
2042     texturedsp
2043     texturedspenc
2044     tpeldsp
2045     vc1dsp
2046     videodsp
2047     vp3dsp
2048     vp56dsp
2049     vp8dsp
2050     wma_freqs
2051     wmv2dsp
2052 "
2053
2054 CMDLINE_SELECT="
2055     $ARCH_EXT_LIST
2056     $CONFIG_LIST
2057     $HAVE_LIST_CMDLINE
2058     $THREADS_LIST
2059     asm
2060     cross_compile
2061     debug
2062     extra_warnings
2063     logging
2064     lto
2065     optimizations
2066     rpath
2067     stripping
2068 "
2069
2070 PATHS_LIST="
2071     bindir
2072     datadir
2073     docdir
2074     incdir
2075     libdir
2076     mandir
2077     pkgconfigdir
2078     prefix
2079     shlibdir
2080 "
2081
2082 CMDLINE_SET="
2083     $PATHS_LIST
2084     ar
2085     arch
2086     as
2087     assert_level
2088     build_suffix
2089     cc
2090     objcc
2091     cpu
2092     cross_prefix
2093     custom_allocator
2094     cxx
2095     dep_cc
2096     doxygen
2097     env
2098     extra_version
2099     gas
2100     host_cc
2101     host_cflags
2102     host_ld
2103     host_ldflags
2104     host_libs
2105     host_os
2106     install
2107     ld
2108     logfile
2109     malloc_prefix
2110     nm
2111     optflags
2112     pkg_config
2113     pkg_config_flags
2114     progs_suffix
2115     random_seed
2116     ranlib
2117     samples
2118     strip
2119     sws_max_filter_size
2120     sysinclude
2121     sysroot
2122     target_exec
2123     target_os
2124     target_path
2125     target_samples
2126     tempprefix
2127     toolchain
2128     valgrind
2129     yasmexe
2130 "
2131
2132 CMDLINE_APPEND="
2133     extra_cflags
2134     extra_cxxflags
2135     extra_objcflags
2136     host_cppflags
2137 "
2138
2139 # code dependency declarations
2140
2141 # architecture extensions
2142
2143 armv5te_deps="arm"
2144 armv6_deps="arm"
2145 armv6t2_deps="arm"
2146 armv8_deps="aarch64"
2147 neon_deps_any="aarch64 arm"
2148 intrinsics_neon_deps="neon"
2149 vfp_deps_any="aarch64 arm"
2150 vfpv3_deps="vfp"
2151 setend_deps="arm"
2152
2153 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2154
2155 mipsfpu_deps="mips"
2156 mipsdsp_deps="mips"
2157 mipsdspr2_deps="mips"
2158 mips32r2_deps="mips"
2159 mips32r6_deps="mips"
2160 mips64r2_deps="mips"
2161 mips64r6_deps="mips"
2162 msa_deps="mips"
2163 mmi_deps="mips"
2164
2165 altivec_deps="ppc"
2166 dcbzl_deps="ppc"
2167 ldbrx_deps="ppc"
2168 ppc4xx_deps="ppc"
2169 vsx_deps="altivec"
2170 power8_deps="vsx"
2171
2172 cpunop_deps="i686"
2173 x86_64_select="i686"
2174 x86_64_suggest="fast_cmov"
2175
2176 amd3dnow_deps="mmx"
2177 amd3dnowext_deps="amd3dnow"
2178 i686_deps="x86"
2179 mmx_deps="x86"
2180 mmxext_deps="mmx"
2181 sse_deps="mmxext"
2182 sse2_deps="sse"
2183 sse3_deps="sse2"
2184 ssse3_deps="sse3"
2185 sse4_deps="ssse3"
2186 sse42_deps="sse4"
2187 aesni_deps="sse42"
2188 avx_deps="sse42"
2189 xop_deps="avx"
2190 fma3_deps="avx"
2191 fma4_deps="avx"
2192 avx2_deps="avx"
2193
2194 mmx_external_deps="yasm"
2195 mmx_inline_deps="inline_asm"
2196 mmx_suggest="mmx_external mmx_inline"
2197
2198 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2199     eval dep=\$${ext}_deps
2200     eval ${ext}_external_deps='"${dep}_external"'
2201     eval ${ext}_inline_deps='"${dep}_inline"'
2202     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2203 done
2204
2205 aligned_stack_if_any="aarch64 ppc x86"
2206 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2207 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2208 fast_unaligned_if_any="aarch64 ppc x86"
2209 simd_align_16_if_any="altivec neon sse"
2210
2211 # system capabilities
2212 symver_if_any="symver_asm_label symver_gnu_asm"
2213 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2214
2215 # threading support
2216 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2217 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2218 atomics_win32_if="MemoryBarrier"
2219 atomics_native_if_any="$ATOMICS_LIST"
2220 w32threads_deps="atomics_native"
2221 threads_if_any="$THREADS_LIST"
2222
2223 # subsystems
2224 dct_select="rdft"
2225 dirac_parse_select="golomb"
2226 error_resilience_select="me_cmp"
2227 faandct_deps="faan fdctdsp"
2228 faanidct_deps="faan idctdsp"
2229 h264dsp_select="startcode"
2230 frame_thread_encoder_deps="encoders threads"
2231 intrax8_select="error_resilience"
2232 mdct_select="fft"
2233 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2234 mpeg_er_select="error_resilience"
2235 mpegaudio_select="mpegaudiodsp"
2236 mpegaudiodsp_select="dct"
2237 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2238 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2239 qsvdec_select="qsv"
2240 qsvenc_select="qsv"
2241 vc1dsp_select="h264chroma qpeldsp startcode"
2242 rdft_select="fft"
2243
2244 # decoders / encoders
2245 aac_decoder_select="imdct15 mdct sinewin"
2246 aac_fixed_decoder_select="mdct sinewin"
2247 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2248 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2249 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2250 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2251 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2252 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2253 adpcm_g722_decoder_select="g722dsp"
2254 adpcm_g722_encoder_select="g722dsp"
2255 aic_decoder_select="golomb idctdsp"
2256 alac_encoder_select="lpc"
2257 als_decoder_select="bswapdsp"
2258 amrnb_decoder_select="lsp"
2259 amrwb_decoder_select="lsp"
2260 amv_decoder_select="sp5x_decoder exif"
2261 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2262 ape_decoder_select="bswapdsp llauddsp"
2263 apng_decoder_select="zlib"
2264 apng_encoder_select="huffyuvencdsp zlib"
2265 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2266 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2267 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2268 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2269 atrac1_decoder_select="mdct sinewin"
2270 atrac3_decoder_select="mdct"
2271 atrac3p_decoder_select="mdct sinewin"
2272 avrn_decoder_select="exif jpegtables"
2273 bink_decoder_select="blockdsp hpeldsp"
2274 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2275 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2276 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2277 cllc_decoder_select="bswapdsp"
2278 comfortnoise_encoder_select="lpc"
2279 cook_decoder_select="audiodsp mdct sinewin"
2280 cscd_decoder_select="lzo"
2281 cscd_decoder_suggest="zlib"
2282 dca_decoder_select="mdct"
2283 dds_decoder_select="texturedsp"
2284 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2285 dnxhd_decoder_select="blockdsp idctdsp"
2286 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2287 dvvideo_decoder_select="dvprofile idctdsp"
2288 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2289 dxa_decoder_select="zlib"
2290 dxv_decoder_select="lzf texturedsp"
2291 eac3_decoder_select="ac3_decoder"
2292 eac3_encoder_select="ac3_encoder"
2293 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2294 eatgq_decoder_select="aandcttables"
2295 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2296 exr_decoder_select="zlib"
2297 ffv1_decoder_select="golomb rangecoder"
2298 ffv1_encoder_select="rangecoder"
2299 ffvhuff_decoder_select="huffyuv_decoder"
2300 ffvhuff_encoder_select="huffyuv_encoder"
2301 fic_decoder_select="golomb"
2302 flac_decoder_select="flacdsp golomb"
2303 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2304 flashsv2_decoder_select="zlib"
2305 flashsv2_encoder_select="zlib"
2306 flashsv_decoder_select="zlib"
2307 flashsv_encoder_select="zlib"
2308 flv_decoder_select="h263_decoder"
2309 flv_encoder_select="h263_encoder"
2310 fourxm_decoder_select="blockdsp bswapdsp"
2311 fraps_decoder_select="bswapdsp huffman"
2312 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2313 g729_decoder_select="audiodsp"
2314 h261_decoder_select="mpegvideo"
2315 h261_encoder_select="aandcttables mpegvideoenc"
2316 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2317 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2318 h263i_decoder_select="h263_decoder"
2319 h263p_decoder_select="h263_decoder"
2320 h263p_encoder_select="h263_encoder"
2321 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2322 h264_decoder_suggest="error_resilience"
2323 h264_qsv_decoder_deps="libmfx"
2324 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2325 h264_qsv_encoder_deps="libmfx"
2326 h264_qsv_encoder_select="qsvenc"
2327 hap_decoder_select="snappy texturedsp"
2328 hap_encoder_deps="libsnappy"
2329 hap_encoder_select="texturedspenc"
2330 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2331 hevc_qsv_decoder_deps="libmfx"
2332 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2333 hevc_qsv_encoder_deps="libmfx"
2334 hevc_qsv_encoder_select="qsvenc"
2335 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2336 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2337 iac_decoder_select="imc_decoder"
2338 imc_decoder_select="bswapdsp fft mdct sinewin"
2339 indeo3_decoder_select="hpeldsp"
2340 indeo4_decoder_select="ividsp"
2341 indeo5_decoder_select="ividsp"
2342 interplay_video_decoder_select="hpeldsp"
2343 jpegls_decoder_select="golomb mjpeg_decoder"
2344 jpegls_encoder_select="golomb"
2345 jv_decoder_select="blockdsp"
2346 lagarith_decoder_select="huffyuvdsp"
2347 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2348 loco_decoder_select="golomb"
2349 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2350 metasound_decoder_select="lsp mdct sinewin"
2351 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2352 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2353 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2354 mjpegb_decoder_select="mjpeg_decoder"
2355 mlp_decoder_select="mlp_parser"
2356 motionpixels_decoder_select="bswapdsp"
2357 mp1_decoder_select="mpegaudio"
2358 mp1float_decoder_select="mpegaudio"
2359 mp2_decoder_select="mpegaudio"
2360 mp2float_decoder_select="mpegaudio"
2361 mp3_decoder_select="mpegaudio"
2362 mp3adu_decoder_select="mpegaudio"
2363 mp3adufloat_decoder_select="mpegaudio"
2364 mp3float_decoder_select="mpegaudio"
2365 mp3on4_decoder_select="mpegaudio"
2366 mp3on4float_decoder_select="mpegaudio"
2367 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2368 mpc8_decoder_select="mpegaudiodsp"
2369 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2370 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2371 mpegvideo_decoder_select="mpegvideo"
2372 mpeg1video_decoder_select="mpegvideo"
2373 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2374 mpeg2video_decoder_select="mpegvideo"
2375 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2376 mpeg2_qsv_decoder_deps="libmfx"
2377 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2378 mpeg2_qsv_encoder_deps="libmfx"
2379 mpeg2_qsv_encoder_select="qsvenc"
2380 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2381 mpeg4_encoder_select="h263_encoder"
2382 msa1_decoder_select="mss34dsp"
2383 msmpeg4v1_decoder_select="h263_decoder"
2384 msmpeg4v2_decoder_select="h263_decoder"
2385 msmpeg4v2_encoder_select="h263_encoder"
2386 msmpeg4v3_decoder_select="h263_decoder"
2387 msmpeg4v3_encoder_select="h263_encoder"
2388 mss2_decoder_select="vc1_decoder mpegvideo"
2389 mts2_decoder_select="mss34dsp"
2390 mxpeg_decoder_select="mjpeg_decoder"
2391 nellymoser_decoder_select="mdct sinewin"
2392 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2393 nuv_decoder_select="idctdsp lzo"
2394 on2avc_decoder_select="mdct"
2395 opus_decoder_deps="swresample"
2396 opus_decoder_select="imdct15"
2397 png_decoder_select="zlib"
2398 png_encoder_select="huffyuvencdsp zlib"
2399 prores_decoder_select="blockdsp idctdsp"
2400 prores_encoder_select="fdctdsp"
2401 qcelp_decoder_select="lsp"
2402 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2403 ra_144_decoder_select="audiodsp"
2404 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2405 ralf_decoder_select="golomb"
2406 rawvideo_decoder_select="bswapdsp"
2407 rscc_decoder_select="zlib"
2408 rtjpeg_decoder_select="me_cmp"
2409 rv10_decoder_select="h263_decoder"
2410 rv10_encoder_select="h263_encoder"
2411 rv20_decoder_select="h263_decoder"
2412 rv20_encoder_select="h263_encoder"
2413 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2414 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2415 screenpresso_decoder_select="zlib"
2416 shorten_decoder_select="golomb"
2417 sipr_decoder_select="lsp"
2418 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2419 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2420 sonic_decoder_select="golomb rangecoder"
2421 sonic_encoder_select="golomb rangecoder"
2422 sonic_ls_encoder_select="golomb rangecoder"
2423 sp5x_decoder_select="mjpeg_decoder"
2424 svq1_decoder_select="hpeldsp"
2425 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2426 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2427 svq3_decoder_suggest="zlib"
2428 tak_decoder_select="audiodsp"
2429 tdsc_decoder_select="zlib mjpeg_decoder"
2430 theora_decoder_select="vp3_decoder"
2431 thp_decoder_select="mjpeg_decoder"
2432 tiff_decoder_suggest="zlib lzma"
2433 tiff_encoder_suggest="zlib"
2434 truehd_decoder_select="mlp_parser"
2435 truemotion2_decoder_select="bswapdsp"
2436 truespeech_decoder_select="bswapdsp"
2437 tscc_decoder_select="zlib"
2438 twinvq_decoder_select="mdct lsp sinewin"
2439 txd_decoder_select="texturedsp"
2440 utvideo_decoder_select="bswapdsp"
2441 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2442 vble_decoder_select="huffyuvdsp"
2443 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo"
2444 vc1_qsv_decoder_deps="libmfx"
2445 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2446 vc1image_decoder_select="vc1_decoder"
2447 vorbis_decoder_select="mdct"
2448 vorbis_encoder_select="mdct"
2449 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2450 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2451 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2452 vp6a_decoder_select="vp6_decoder"
2453 vp6f_decoder_select="vp6_decoder"
2454 vp7_decoder_select="h264pred videodsp vp8dsp"
2455 vp8_decoder_select="h264pred videodsp vp8dsp"
2456 vp9_decoder_select="videodsp vp9_parser"
2457 webp_decoder_select="vp8_decoder exif"
2458 wmalossless_decoder_select="llauddsp"
2459 wmapro_decoder_select="mdct sinewin wma_freqs"
2460 wmav1_decoder_select="mdct sinewin wma_freqs"
2461 wmav1_encoder_select="mdct sinewin wma_freqs"
2462 wmav2_decoder_select="mdct sinewin wma_freqs"
2463 wmav2_encoder_select="mdct sinewin wma_freqs"
2464 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2465 wmv1_decoder_select="h263_decoder"
2466 wmv1_encoder_select="h263_encoder"
2467 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2468 wmv2_encoder_select="h263_encoder wmv2dsp"
2469 wmv3_decoder_select="vc1_decoder"
2470 wmv3image_decoder_select="wmv3_decoder"
2471 xma1_decoder_select="wmapro_decoder"
2472 xma2_decoder_select="wmapro_decoder"
2473 zerocodec_decoder_select="zlib"
2474 zlib_decoder_select="zlib"
2475 zlib_encoder_select="zlib"
2476 zmbv_decoder_select="zlib"
2477 zmbv_encoder_select="zlib"
2478
2479 # hardware accelerators
2480 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2481 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2482 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2483 vaapi_deps="va_va_h"
2484 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2485 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2486 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2487 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2488 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2489 xvmc_deps="X11_extensions_XvMClib_h"
2490
2491 h263_vaapi_hwaccel_deps="vaapi"
2492 h263_vaapi_hwaccel_select="h263_decoder"
2493 h263_videotoolbox_hwaccel_deps="videotoolbox"
2494 h263_videotoolbox_hwaccel_select="h263_decoder"
2495 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2496 h264_d3d11va_hwaccel_deps="d3d11va"
2497 h264_d3d11va_hwaccel_select="h264_decoder"
2498 h264_dxva2_hwaccel_deps="dxva2"
2499 h264_dxva2_hwaccel_select="h264_decoder"
2500 h264_mmal_decoder_deps="mmal"
2501 h264_mmal_decoder_select="mmal"
2502 h264_mmal_hwaccel_deps="mmal"
2503 h264_qsv_hwaccel_deps="libmfx"
2504 h264_vaapi_hwaccel_deps="vaapi"
2505 h264_vaapi_hwaccel_select="h264_decoder"
2506 h264_vda_decoder_deps="vda"
2507 h264_vda_decoder_select="h264_decoder"
2508 h264_vda_hwaccel_deps="vda"
2509 h264_vda_hwaccel_select="h264_decoder"
2510 h264_vda_old_hwaccel_deps="vda"
2511 h264_vda_old_hwaccel_select="h264_decoder"
2512 h264_vdpau_decoder_deps="vdpau"
2513 h264_vdpau_decoder_select="h264_decoder"
2514 h264_vdpau_hwaccel_deps="vdpau"
2515 h264_vdpau_hwaccel_select="h264_decoder"
2516 h264_videotoolbox_hwaccel_deps="videotoolbox"
2517 h264_videotoolbox_hwaccel_select="h264_decoder"
2518 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2519 hevc_d3d11va_hwaccel_select="hevc_decoder"
2520 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2521 hevc_dxva2_hwaccel_select="hevc_decoder"
2522 hevc_qsv_hwaccel_deps="libmfx"
2523 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2524 hevc_vaapi_hwaccel_select="hevc_decoder"
2525 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2526 hevc_vdpau_hwaccel_select="hevc_decoder"
2527 mpeg_vdpau_decoder_deps="vdpau"
2528 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2529 mpeg_xvmc_hwaccel_deps="xvmc"
2530 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2531 mpeg1_vdpau_decoder_deps="vdpau"
2532 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2533 mpeg1_vdpau_hwaccel_deps="vdpau"
2534 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2535 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2536 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2537 mpeg1_xvmc_hwaccel_deps="xvmc"
2538 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2539 mpeg2_crystalhd_decoder_select="crystalhd"
2540 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2541 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2542 mpeg2_dxva2_hwaccel_deps="dxva2"
2543 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2544 mpeg2_mmal_decoder_deps="mmal"
2545 mpeg2_mmal_decoder_select="mmal"
2546 mpeg2_mmal_hwaccel_deps="mmal"
2547 mpeg2_qsv_hwaccel_deps="libmfx"
2548 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2549 mpeg2_vaapi_hwaccel_deps="vaapi"
2550 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_vdpau_hwaccel_deps="vdpau"
2552 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2553 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2554 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2555 mpeg2_xvmc_hwaccel_deps="xvmc"
2556 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2557 mpeg4_crystalhd_decoder_select="crystalhd"
2558 mpeg4_mmal_decoder_deps="mmal"
2559 mpeg4_mmal_decoder_select="mmal"
2560 mpeg4_mmal_hwaccel_deps="mmal"
2561 mpeg4_vaapi_hwaccel_deps="vaapi"
2562 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2563 mpeg4_vdpau_decoder_deps="vdpau"
2564 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2565 mpeg4_vdpau_hwaccel_deps="vdpau"
2566 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2567 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2568 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2569 msmpeg4_crystalhd_decoder_select="crystalhd"
2570 vc1_crystalhd_decoder_select="crystalhd"
2571 vc1_d3d11va_hwaccel_deps="d3d11va"
2572 vc1_d3d11va_hwaccel_select="vc1_decoder"
2573 vc1_dxva2_hwaccel_deps="dxva2"
2574 vc1_dxva2_hwaccel_select="vc1_decoder"
2575 vc1_mmal_decoder_deps="mmal"
2576 vc1_mmal_decoder_select="mmal"
2577 vc1_mmal_hwaccel_deps="mmal"
2578 vc1_qsv_hwaccel_deps="libmfx"
2579 vc1_qsv_hwaccel_select="qsvdec_vc1"
2580 vc1_vaapi_hwaccel_deps="vaapi"
2581 vc1_vaapi_hwaccel_select="vc1_decoder"
2582 vc1_vdpau_decoder_deps="vdpau"
2583 vc1_vdpau_decoder_select="vc1_decoder"
2584 vc1_vdpau_hwaccel_deps="vdpau"
2585 vc1_vdpau_hwaccel_select="vc1_decoder"
2586 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2587 vp9_d3d11va_hwaccel_select="vp9_decoder"
2588 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2589 vp9_dxva2_hwaccel_select="vp9_decoder"
2590 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2591 vp9_vaapi_hwaccel_select="vp9_decoder"
2592 wmv3_crystalhd_decoder_select="crystalhd"
2593 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2594 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2595 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2596 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2597 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2598
2599 # parsers
2600 h264_parser_select="h264_decoder"
2601 hevc_parser_select="golomb"
2602 mpegvideo_parser_select="mpegvideo"
2603 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2604 vc1_parser_select="vc1dsp"
2605
2606 # bitstream_filters
2607 mjpeg2jpeg_bsf_select="jpegtables"
2608
2609 # external libraries
2610 chromaprint_muxer_deps="chromaprint"
2611 libcelt_decoder_deps="libcelt"
2612 libdcadec_decoder_deps="libdcadec"
2613 libfaac_encoder_deps="libfaac"
2614 libfaac_encoder_select="audio_frame_queue"
2615 libfdk_aac_decoder_deps="libfdk_aac"
2616 libfdk_aac_encoder_deps="libfdk_aac"
2617 libfdk_aac_encoder_select="audio_frame_queue"
2618 libgme_demuxer_deps="libgme"
2619 libgsm_decoder_deps="libgsm"
2620 libgsm_encoder_deps="libgsm"
2621 libgsm_ms_decoder_deps="libgsm"
2622 libgsm_ms_encoder_deps="libgsm"
2623 libilbc_decoder_deps="libilbc"
2624 libilbc_encoder_deps="libilbc"
2625 libkvazaar_encoder_deps="libkvazaar"
2626 libmodplug_demuxer_deps="libmodplug"
2627 libmp3lame_encoder_deps="libmp3lame"
2628 libmp3lame_encoder_select="audio_frame_queue"
2629 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2630 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2631 libopencore_amrnb_encoder_select="audio_frame_queue"
2632 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2633 libopenh264_encoder_deps="libopenh264"
2634 libopenjpeg_decoder_deps="libopenjpeg"
2635 libopenjpeg_encoder_deps="libopenjpeg"
2636 libopus_decoder_deps="libopus"
2637 libopus_encoder_deps="libopus"
2638 libopus_encoder_select="audio_frame_queue"
2639 libschroedinger_decoder_deps="libschroedinger"
2640 libschroedinger_encoder_deps="libschroedinger"
2641 libshine_encoder_deps="libshine"
2642 libshine_encoder_select="audio_frame_queue"
2643 libspeex_decoder_deps="libspeex"
2644 libspeex_encoder_deps="libspeex"
2645 libspeex_encoder_select="audio_frame_queue"
2646 libtheora_encoder_deps="libtheora"
2647 libtwolame_encoder_deps="libtwolame"
2648 libutvideo_decoder_deps="libutvideo"
2649 libutvideo_encoder_deps="libutvideo"
2650 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2651 libvorbis_decoder_deps="libvorbis"
2652 libvorbis_encoder_deps="libvorbis"
2653 libvorbis_encoder_select="audio_frame_queue"
2654 libvpx_vp8_decoder_deps="libvpx"
2655 libvpx_vp8_encoder_deps="libvpx"
2656 libvpx_vp9_decoder_deps="libvpx"
2657 libvpx_vp9_encoder_deps="libvpx"
2658 libwavpack_encoder_deps="libwavpack"
2659 libwebp_encoder_deps="libwebp"
2660 libwebp_anim_encoder_deps="libwebp"
2661 libx262_encoder_deps="libx262"
2662 libx264_encoder_deps="libx264"
2663 libx264rgb_encoder_deps="libx264"
2664 libx264rgb_encoder_select="libx264_encoder"
2665 libx265_encoder_deps="libx265"
2666 libxavs_encoder_deps="libxavs"
2667 libxvid_encoder_deps="libxvid"
2668 libzvbi_teletext_decoder_deps="libzvbi"
2669 nvenc_encoder_deps="nvenc"
2670 nvenc_h264_encoder_deps="nvenc"
2671 nvenc_hevc_encoder_deps="nvenc"
2672
2673 # demuxers / muxers
2674 ac3_demuxer_select="ac3_parser"
2675 asf_demuxer_select="riffdec"
2676 asf_o_demuxer_select="riffdec"
2677 asf_muxer_select="riffenc"
2678 asf_stream_muxer_select="asf_muxer"
2679 avi_demuxer_select="iso_media riffdec exif"
2680 avi_muxer_select="riffenc"
2681 avisynth_demuxer_deps="avisynth"
2682 avisynth_demuxer_select="riffdec"
2683 caf_demuxer_select="iso_media riffdec"
2684 dash_muxer_select="mp4_muxer"
2685 dirac_demuxer_select="dirac_parser"
2686 dts_demuxer_select="dca_parser"
2687 dtshd_demuxer_select="dca_parser"
2688 dv_demuxer_select="dvprofile"
2689 dv_muxer_select="dvprofile"
2690 dxa_demuxer_select="riffdec"
2691 eac3_demuxer_select="ac3_parser"
2692 f4v_muxer_select="mov_muxer"
2693 flac_demuxer_select="flac_parser"
2694 hds_muxer_select="flv_muxer"
2695 hls_muxer_select="mpegts_muxer"
2696 image2_alias_pix_demuxer_select="image2_demuxer"
2697 image2_brender_pix_demuxer_select="image2_demuxer"
2698 ipod_muxer_select="mov_muxer"
2699 ismv_muxer_select="mov_muxer"
2700 libnut_demuxer_deps="libnut"
2701 libnut_muxer_deps="libnut"
2702 matroska_audio_muxer_select="matroska_muxer"
2703 matroska_demuxer_select="iso_media riffdec"
2704 matroska_demuxer_suggest="bzlib lzo zlib"
2705 matroska_muxer_select="iso_media riffenc"
2706 mmf_muxer_select="riffenc"
2707 mov_demuxer_select="iso_media riffdec"
2708 mov_demuxer_suggest="zlib"
2709 mov_muxer_select="iso_media riffenc rtpenc_chain"
2710 mp3_demuxer_select="mpegaudio_parser"
2711 mp4_muxer_select="mov_muxer"
2712 mpegts_demuxer_select="iso_media"
2713 mpegts_muxer_select="adts_muxer latm_muxer"
2714 mpegtsraw_demuxer_select="mpegts_demuxer"
2715 mxf_d10_muxer_select="mxf_muxer"
2716 mxf_opatom_muxer_select="mxf_muxer"
2717 nut_muxer_select="riffenc"
2718 nuv_demuxer_select="riffdec"
2719 oga_muxer_select="ogg_muxer"
2720 ogg_demuxer_select="dirac_parse"
2721 opus_muxer_select="ogg_muxer"
2722 psp_muxer_select="mov_muxer"
2723 rtp_demuxer_select="sdp_demuxer"
2724 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2725 rtsp_demuxer_select="http_protocol rtpdec"
2726 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2727 sap_demuxer_select="sdp_demuxer"
2728 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2729 sdp_demuxer_select="rtpdec"
2730 smoothstreaming_muxer_select="ismv_muxer"
2731 spdif_muxer_select="aac_parser"
2732 spx_muxer_select="ogg_muxer"
2733 swf_demuxer_suggest="zlib"
2734 tak_demuxer_select="tak_parser"
2735 tg2_muxer_select="mov_muxer"
2736 tgp_muxer_select="mov_muxer"
2737 vobsub_demuxer_select="mpegps_demuxer"
2738 w64_demuxer_select="wav_demuxer"
2739 w64_muxer_select="wav_muxer"
2740 wav_demuxer_select="riffdec"
2741 wav_muxer_select="riffenc"
2742 webm_muxer_select="iso_media riffenc"
2743 webm_dash_manifest_demuxer_select="matroska_demuxer"
2744 wtv_demuxer_select="mpegts_demuxer riffdec"
2745 wtv_muxer_select="mpegts_muxer riffenc"
2746 xmv_demuxer_select="riffdec"
2747 xwma_demuxer_select="riffdec"
2748
2749 # indevs / outdevs
2750 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2751 alsa_outdev_deps="alsa_asoundlib_h"
2752 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2753 avfoundation_indev_select="avfoundation"
2754 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2755 caca_outdev_deps="libcaca"
2756 decklink_indev_deps="decklink pthreads"
2757 decklink_indev_extralibs="-lstdc++"
2758 decklink_outdev_deps="decklink pthreads"
2759 decklink_outdev_extralibs="-lstdc++"
2760 dshow_indev_deps="IBaseFilter"
2761 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2762 dv1394_indev_deps="dv1394"
2763 dv1394_indev_select="dv_demuxer"
2764 fbdev_indev_deps="linux_fb_h"
2765 fbdev_outdev_deps="linux_fb_h"
2766 gdigrab_indev_deps="CreateDIBSection"
2767 gdigrab_indev_extralibs="-lgdi32"
2768 gdigrab_indev_select="bmp_decoder"
2769 iec61883_indev_deps="libiec61883"
2770 jack_indev_deps="jack_jack_h"
2771 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2772 lavfi_indev_deps="avfilter"
2773 libcdio_indev_deps="libcdio"
2774 libdc1394_indev_deps="libdc1394"
2775 libv4l2_indev_deps="libv4l2"
2776 openal_indev_deps="openal"
2777 opengl_outdev_deps="opengl"
2778 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2779 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2780 pulse_indev_deps="libpulse"
2781 pulse_outdev_deps="libpulse"
2782 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2783 qtkit_indev_select="qtkit"
2784 sdl_outdev_deps="sdl"
2785 sndio_indev_deps="sndio_h"
2786 sndio_outdev_deps="sndio_h"
2787 v4l_indev_deps="linux_videodev_h"
2788 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2789 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2790 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2791 vfwcap_indev_extralibs="-lavicap32"
2792 x11grab_indev_deps="x11grab"
2793 x11grab_xcb_indev_deps="libxcb"
2794 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2795 xv_outdev_extralibs="-lXv -lX11 -lXext"
2796
2797 # protocols
2798 async_protocol_deps="threads"
2799 bluray_protocol_deps="libbluray"
2800 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2801 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2802 ffrtmpcrypt_protocol_select="tcp_protocol"
2803 ffrtmphttp_protocol_deps="!librtmp_protocol"
2804 ffrtmphttp_protocol_select="http_protocol"
2805 ftp_protocol_select="tcp_protocol"
2806 gopher_protocol_select="network"
2807 http_protocol_select="tcp_protocol"
2808 httpproxy_protocol_select="tcp_protocol"
2809 https_protocol_select="tls_protocol"
2810 icecast_protocol_select="http_protocol"
2811 librtmp_protocol_deps="librtmp"
2812 librtmpe_protocol_deps="librtmp"
2813 librtmps_protocol_deps="librtmp"
2814 librtmpt_protocol_deps="librtmp"
2815 librtmpte_protocol_deps="librtmp"
2816 libsmbclient_protocol_deps="libsmbclient gplv3"
2817 libssh_protocol_deps="libssh"
2818 mmsh_protocol_select="http_protocol"
2819 mmst_protocol_select="network"
2820 rtmp_protocol_deps="!librtmp_protocol"
2821 rtmp_protocol_select="tcp_protocol"
2822 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2823 rtmps_protocol_deps="!librtmp_protocol"
2824 rtmps_protocol_select="tls_protocol"
2825 rtmpt_protocol_select="ffrtmphttp_protocol"
2826 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2827 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2828 rtp_protocol_select="udp_protocol"
2829 sctp_protocol_deps="struct_sctp_event_subscribe"
2830 sctp_protocol_select="network"
2831 srtp_protocol_select="rtp_protocol"
2832 tcp_protocol_select="network"
2833 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2834 tls_gnutls_protocol_select="tcp_protocol"
2835 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2836 tls_openssl_protocol_select="tcp_protocol"
2837 tls_schannel_protocol_deps="schannel"
2838 tls_schannel_protocol_select="tcp_protocol"
2839 tls_securetransport_protocol_deps="securetransport"
2840 tls_securetransport_protocol_select="tcp_protocol"
2841 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2842 udp_protocol_select="network"
2843 udplite_protocol_select="network"
2844 unix_protocol_deps="sys_un_h"
2845 unix_protocol_select="network"
2846
2847 # filters
2848 afftfilt_filter_deps="avcodec"
2849 afftfilt_filter_select="fft"
2850 amovie_filter_deps="avcodec avformat"
2851 aresample_filter_deps="swresample"
2852 ass_filter_deps="libass"
2853 asyncts_filter_deps="avresample"
2854 atempo_filter_deps="avcodec"
2855 atempo_filter_select="rdft"
2856 azmq_filter_deps="libzmq"
2857 blackframe_filter_deps="gpl"
2858 boxblur_filter_deps="gpl"
2859 bs2b_filter_deps="libbs2b"
2860 colormatrix_filter_deps="gpl"
2861 cover_rect_filter_deps="avcodec avformat gpl"
2862 cropdetect_filter_deps="gpl"
2863 delogo_filter_deps="gpl"
2864 deshake_filter_select="pixelutils"
2865 drawtext_filter_deps="libfreetype"
2866 ebur128_filter_deps="gpl"
2867 eq_filter_deps="gpl"
2868 fftfilt_filter_deps="avcodec"
2869 fftfilt_filter_select="rdft"
2870 find_rect_filter_deps="avcodec avformat gpl"
2871 firequalizer_filter_deps="avcodec"
2872 firequalizer_filter_select="rdft"
2873 flite_filter_deps="libflite"
2874 frei0r_filter_deps="frei0r dlopen"
2875 frei0r_src_filter_deps="frei0r dlopen"
2876 fspp_filter_deps="gpl"
2877 geq_filter_deps="gpl"
2878 histeq_filter_deps="gpl"
2879 hqdn3d_filter_deps="gpl"
2880 hwupload_cuda_filter_deps="cuda"
2881 interlace_filter_deps="gpl"
2882 kerndeint_filter_deps="gpl"
2883 ladspa_filter_deps="ladspa dlopen"
2884 mcdeint_filter_deps="avcodec gpl"
2885 movie_filter_deps="avcodec avformat"
2886 mpdecimate_filter_deps="gpl"
2887 mpdecimate_filter_select="pixelutils"
2888 mptestsrc_filter_deps="gpl"
2889 negate_filter_deps="lut_filter"
2890 nnedi_filter_deps="gpl"
2891 ocr_filter_deps="libtesseract"
2892 ocv_filter_deps="libopencv"
2893 owdenoise_filter_deps="gpl"
2894 pan_filter_deps="swresample"
2895 perspective_filter_deps="gpl"
2896 phase_filter_deps="gpl"
2897 pp7_filter_deps="gpl"
2898 pp_filter_deps="gpl postproc"
2899 pullup_filter_deps="gpl"
2900 removelogo_filter_deps="avcodec avformat swscale"
2901 repeatfields_filter_deps="gpl"
2902 resample_filter_deps="avresample"
2903 rubberband_filter_deps="librubberband"
2904 sab_filter_deps="gpl swscale"
2905 scale2ref_filter_deps="swscale"
2906 scale_filter_deps="swscale"
2907 select_filter_select="pixelutils"
2908 showcqt_filter_deps="avcodec avformat swscale"
2909 showcqt_filter_select="fft"
2910 showfreqs_filter_deps="avcodec"
2911 showfreqs_filter_select="fft"
2912 showspectrum_filter_deps="avcodec"
2913 showspectrum_filter_select="fft"
2914 showspectrumpic_filter_deps="avcodec"
2915 showspectrumpic_filter_select="fft"
2916 smartblur_filter_deps="gpl swscale"
2917 sofalizer_filter_deps="netcdf avcodec"
2918 sofalizer_filter_select="fft"
2919 spectrumsynth_filter_deps="avcodec"
2920 spectrumsynth_filter_select="fft"
2921 spp_filter_deps="gpl avcodec"
2922 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2923 stereo3d_filter_deps="gpl"
2924 subtitles_filter_deps="avformat avcodec libass"
2925 super2xsai_filter_deps="gpl"
2926 pixfmts_super2xsai_test_deps="super2xsai_filter"
2927 tinterlace_filter_deps="gpl"
2928 tinterlace_merge_test_deps="tinterlace_filter"
2929 tinterlace_pad_test_deps="tinterlace_filter"
2930 uspp_filter_deps="gpl avcodec"
2931 vidstabdetect_filter_deps="libvidstab"
2932 vidstabtransform_filter_deps="libvidstab"
2933 zmq_filter_deps="libzmq"
2934 zoompan_filter_deps="swscale"
2935 zscale_filter_deps="libzimg"
2936
2937 # examples
2938 avcodec_example_deps="avcodec avutil"
2939 avio_dir_cmd="avformat avutil"
2940 avio_reading="avformat avcodec avutil"
2941 decoding_encoding_example_deps="avcodec avformat avutil"
2942 demuxing_decoding_example_deps="avcodec avformat avutil"
2943 extract_mvs_example_deps="avcodec avformat avutil"
2944 filter_audio_example_deps="avfilter avutil"
2945 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2946 filtering_video_example_deps="avfilter avcodec avformat avutil"
2947 metadata_example_deps="avformat avutil"
2948 muxing_example_deps="avcodec avformat avutil swscale"
2949 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2950 remuxing_example_deps="avcodec avformat avutil"
2951 resampling_audio_example_deps="avutil swresample"
2952 scaling_video_example_deps="avutil swscale"
2953 transcode_aac_example_deps="avcodec avformat swresample"
2954 transcoding_example_deps="avfilter avcodec avformat avutil"
2955
2956 # libraries, in linking order
2957 avcodec_deps="avutil"
2958 avdevice_deps="avformat avcodec avutil"
2959 avfilter_deps="avutil"
2960 avformat_deps="avcodec avutil"
2961 avresample_deps="avutil"
2962 postproc_deps="avutil gpl"
2963 swresample_deps="avutil"
2964 swscale_deps="avutil"
2965
2966 # programs
2967 ffmpeg_deps="avcodec avfilter avformat swresample"
2968 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2969                null_filter
2970                setpts_filter trim_filter"
2971 ffplay_deps="avcodec avformat swscale swresample sdl"
2972 ffplay_libs='$sdl_libs'
2973 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2974 ffprobe_deps="avcodec avformat"
2975 ffserver_deps="avformat fork sarestart"
2976 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2977
2978 # documentation
2979 podpages_deps="perl"
2980 manpages_deps="perl pod2man"
2981 htmlpages_deps="perl"
2982 htmlpages_deps_any="makeinfo_html texi2html"
2983 txtpages_deps="perl makeinfo"
2984 doc_deps_any="manpages htmlpages podpages txtpages"
2985
2986 # default parameters
2987
2988 logfile="config.log"
2989
2990 # installation paths
2991 prefix_default="/usr/local"
2992 bindir_default='${prefix}/bin'
2993 datadir_default='${prefix}/share/ffmpeg'
2994 docdir_default='${prefix}/share/doc/ffmpeg'
2995 incdir_default='${prefix}/include'
2996 libdir_default='${prefix}/lib'
2997 mandir_default='${prefix}/share/man'
2998
2999 # toolchain
3000 ar_default="ar"
3001 cc_default="gcc"
3002 cxx_default="g++"
3003 host_cc_default="gcc"
3004 cp_f="cp -f"
3005 doxygen_default="doxygen"
3006 install="install"
3007 ln_s="ln -s -f"
3008 nm_default="nm -g"
3009 objformat="elf"
3010 pkg_config_default=pkg-config
3011 ranlib_default="ranlib"
3012 strip_default="strip"
3013 yasmexe_default="yasm"
3014 windres_default="windres"
3015
3016 # OS
3017 target_os_default=$(tolower $(uname -s))
3018 host_os=$target_os_default
3019
3020 # machine
3021 if test "$target_os_default" = aix; then
3022     arch_default=$(uname -p)
3023     strip_default="strip -X32_64"
3024 else
3025     arch_default=$(uname -m)
3026 fi
3027 cpu="generic"
3028 intrinsics="none"
3029
3030 # configurable options
3031 enable $PROGRAM_LIST
3032 enable $DOCUMENT_LIST
3033 enable $EXAMPLE_LIST
3034 enable $(filter_out avresample $LIBRARY_LIST)
3035 enable stripping
3036
3037 enable asm
3038 enable debug
3039 enable doc
3040 enable faan faandct faanidct
3041 enable optimizations
3042 enable runtime_cpudetect
3043 enable safe_bitstream_reader
3044 enable static
3045 enable swscale_alpha
3046 enable valgrind_backtrace
3047
3048 sws_max_filter_size_default=256
3049 set_default sws_max_filter_size
3050
3051 # Enable hwaccels by default.
3052 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3053 enable xlib
3054
3055 # build settings
3056 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3057 LIBPREF="lib"
3058 LIBSUF=".a"
3059 FULLNAME='$(NAME)$(BUILDSUF)'
3060 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3061 SLIBPREF="lib"
3062 SLIBSUF=".so"
3063 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3064 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3065 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3066 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3067 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3068 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3069
3070 asflags_filter=echo
3071 cflags_filter=echo
3072 ldflags_filter=echo
3073
3074 AS_C='-c'
3075 AS_O='-o $@'
3076 CC_C='-c'
3077 CC_E='-E -o $@'
3078 CC_O='-o $@'
3079 CXX_C='-c'
3080 CXX_O='-o $@'
3081 OBJCC_C='-c'
3082 OBJCC_E='-E -o $@'
3083 OBJCC_O='-o $@'
3084 LD_O='-o $@'
3085 LD_LIB='-l%'
3086 LD_PATH='-L'
3087 HOSTCC_C='-c'
3088 HOSTCC_E='-E -o $@'
3089 HOSTCC_O='-o $@'
3090 HOSTLD_O='-o $@'
3091
3092 host_libs='-lm'
3093 host_cflags_filter=echo
3094 host_ldflags_filter=echo
3095
3096 target_path='$(CURDIR)'
3097
3098 # since the object filename is not given with the -MM flag, the compiler
3099 # is only able to print the basename, and we must add the path ourselves
3100 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3101 DEPFLAGS='-MM'
3102
3103 # find source path
3104 if test -f configure; then
3105     source_path=.
3106 else
3107     source_path=$(cd $(dirname "$0"); pwd)
3108     case "$source_path" in
3109         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3110     esac
3111     test -e "$source_path/config.h" &&
3112         die "Out of tree builds are impossible with config.h in source dir."
3113 fi
3114
3115 for v in "$@"; do
3116     r=${v#*=}
3117     l=${v%"$r"}
3118     r=$(sh_quote "$r")
3119     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3120 done
3121
3122 find_things(){
3123     thing=$1
3124     pattern=$2
3125     file=$source_path/$3
3126     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3127 }
3128
3129 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3130 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3131 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3132 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3133 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3134 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3135 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3136 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3137 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3138 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3139 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3140
3141 ALL_COMPONENTS="
3142     $BSF_LIST
3143     $DECODER_LIST
3144     $DEMUXER_LIST
3145     $ENCODER_LIST
3146     $FILTER_LIST
3147     $HWACCEL_LIST
3148     $INDEV_LIST
3149     $MUXER_LIST
3150     $OUTDEV_LIST
3151     $PARSER_LIST
3152     $PROTOCOL_LIST
3153 "
3154
3155 for n in $COMPONENT_LIST; do
3156     v=$(toupper ${n%s})_LIST
3157     eval enable \$$v
3158     eval ${n}_if_any="\$$v"
3159 done
3160
3161 enable $ARCH_EXT_LIST
3162
3163 die_unknown(){
3164     echo "Unknown option \"$1\"."
3165     echo "See $0 --help for available options."
3166     exit 1
3167 }
3168
3169 print_in_columns() {
3170     cols=$(expr $ncols / 24)
3171     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3172 }
3173
3174 show_list() {
3175     suffix=_$1
3176     shift
3177     echo $* | sed s/$suffix//g | print_in_columns
3178     exit 0
3179 }
3180
3181 rand_list(){
3182     IFS=', '
3183     set -- $*
3184     unset IFS
3185     for thing; do
3186         comp=${thing%:*}
3187         prob=${thing#$comp}
3188         prob=${prob#:}
3189         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3190         echo "prob ${prob:-0.5}"
3191         printf '%s\n' $comp
3192     done
3193 }
3194
3195 do_random(){
3196     action=$1
3197     shift
3198     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3199     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3200 }
3201
3202 for opt do
3203     optval="${opt#*=}"
3204     case "$opt" in
3205         --extra-ldflags=*)
3206             add_ldflags $optval
3207         ;;
3208         --extra-ldexeflags=*)
3209             add_ldexeflags $optval
3210         ;;
3211         --extra-ldlibflags=*)
3212             add_ldlibflags $optval
3213         ;;
3214         --extra-libs=*)
3215             add_extralibs $optval
3216         ;;
3217         --disable-devices)
3218             disable $INDEV_LIST $OUTDEV_LIST
3219         ;;
3220         --enable-debug=*)
3221             debuglevel="$optval"
3222         ;;
3223         --disable-programs)
3224             disable $PROGRAM_LIST
3225         ;;
3226         --disable-everything)
3227             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3228         ;;
3229         --disable-all)
3230             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3231             disable $LIBRARY_LIST $PROGRAM_LIST doc
3232             enable avutil
3233         ;;
3234         --enable-random|--disable-random)
3235             action=${opt%%-random}
3236             do_random ${action#--} $COMPONENT_LIST
3237         ;;
3238         --enable-random=*|--disable-random=*)
3239             action=${opt%%-random=*}
3240             do_random ${action#--} $optval
3241         ;;
3242         --enable-*=*|--disable-*=*)
3243             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3244             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3245             eval list=\$$(toupper $thing)_LIST
3246             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3247             list=$(filter "$name" $list)
3248             [ "$list" = "" ] && warn "Option $opt did not match anything"
3249             $action $list
3250         ;;
3251         --enable-?*|--disable-?*)
3252             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3253             if is_in $option $COMPONENT_LIST; then
3254                 test $action = disable && action=unset
3255                 eval $action \$$(toupper ${option%s})_LIST
3256             elif is_in $option $CMDLINE_SELECT; then
3257                 $action $option
3258             else
3259                 die_unknown $opt
3260             fi
3261         ;;
3262         --list-*)
3263             NAME="${opt#--list-}"
3264             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3265             NAME=${NAME%s}
3266             eval show_list $NAME \$$(toupper $NAME)_LIST
3267         ;;
3268         --help|-h) show_help
3269         ;;
3270         --fatal-warnings) enable fatal_warnings
3271         ;;
3272         *)
3273             optname="${opt%%=*}"
3274             optname="${optname#--}"
3275             optname=$(echo "$optname" | sed 's/-/_/g')
3276             if is_in $optname $CMDLINE_SET; then
3277                 eval $optname='$optval'
3278             elif is_in $optname $CMDLINE_APPEND; then
3279                 append $optname "$optval"
3280             else
3281                 die_unknown $opt
3282             fi
3283         ;;
3284     esac
3285 done
3286
3287 for e in $env; do
3288     eval "export $e"
3289 done
3290
3291 disabled logging && logfile=/dev/null
3292
3293 # Disable all the library-specific components if the library itself
3294 # is disabled, see AVCODEC_LIST and following _LIST variables.
3295
3296 disable_components(){
3297     disabled ${1} && disable $(
3298         eval components="\$$(toupper ${1})_COMPONENTS"
3299         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3300     )
3301 }
3302
3303 map 'disable_components $v' $LIBRARY_LIST
3304
3305 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3306 set >> $logfile
3307
3308 test -n "$valgrind" && toolchain="valgrind-memcheck"
3309
3310 case "$toolchain" in
3311     *-asan)
3312         cc_default="${toolchain%-asan}"
3313         add_cflags  -fsanitize=address
3314         add_ldflags -fsanitize=address
3315     ;;
3316     *-tsan)
3317         cc_default="${toolchain%-tsan}"
3318         add_cflags  -fsanitize=thread -pie
3319         add_ldflags -fsanitize=thread -pie
3320         case "$toolchain" in
3321             gcc-tsan)
3322                 add_cflags  -fPIC
3323                 add_ldflags -fPIC
3324                 ;;
3325         esac
3326     ;;
3327     *-usan)
3328         cc_default="${toolchain%-usan}"
3329         add_cflags  -fsanitize=undefined
3330         add_ldflags -fsanitize=undefined
3331     ;;
3332     valgrind-*)
3333         target_exec_default="valgrind"
3334         case "$toolchain" in
3335             valgrind-massif)
3336                 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"
3337                 ;;
3338             valgrind-memcheck)
3339                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3340                 ;;
3341         esac
3342     ;;
3343     msvc)
3344         # Check whether the current MSVC version needs the C99 converter.
3345         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3346         # support enough of C99 to build ffmpeg. Default to the new
3347         # behaviour if the regexp was unable to match anything, since this
3348         # successfully parses the version number of existing supported
3349         # versions that require the converter (MSVC 2010 and 2012).
3350         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3351         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3352             cc_default="cl"
3353         else
3354             cc_default="c99wrap cl"
3355         fi
3356         ld_default="$source_path/compat/windows/mslink"
3357         nm_default="dumpbin -symbols"
3358         ar_default="lib"
3359         case "$arch" in
3360         arm*)
3361             as_default="armasm"
3362             ;;
3363         esac
3364         target_os_default="win32"
3365         # Use a relative path for TMPDIR. This makes sure all the
3366         # ffconf temp files are written with a relative path, avoiding
3367         # issues with msys/win32 path conversion for MSVC parameters
3368         # such as -Fo<file> or -out:<file>.
3369         TMPDIR=.
3370     ;;
3371     icl)
3372         cc_default="icl"
3373         ld_default="xilink"
3374         nm_default="dumpbin -symbols"
3375         ar_default="xilib"
3376         target_os_default="win32"
3377         TMPDIR=.
3378     ;;
3379     gcov)
3380         add_cflags  -fprofile-arcs -ftest-coverage
3381         add_ldflags -fprofile-arcs -ftest-coverage
3382     ;;
3383     hardened)
3384         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3385         add_cflags   -fno-strict-overflow -fstack-protector-all
3386         add_ldflags  -Wl,-z,relro -Wl,-z,now
3387     ;;
3388     ?*)
3389         die "Unknown toolchain $toolchain"
3390     ;;
3391 esac
3392
3393 test -n "$cross_prefix" && enable cross_compile
3394
3395 if enabled cross_compile; then
3396     test -n "$arch" && test -n "$target_os" ||
3397         die "Must specify target arch and OS when cross-compiling"
3398 fi
3399
3400 ar_default="${cross_prefix}${ar_default}"
3401 cc_default="${cross_prefix}${cc_default}"
3402 cxx_default="${cross_prefix}${cxx_default}"
3403 nm_default="${cross_prefix}${nm_default}"
3404 pkg_config_default="${cross_prefix}${pkg_config_default}"
3405 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3406     ranlib_default="${cross_prefix}${ranlib_default} -D"
3407 else
3408     ranlib_default="${cross_prefix}${ranlib_default}"
3409 fi
3410 strip_default="${cross_prefix}${strip_default}"
3411 windres_default="${cross_prefix}${windres_default}"
3412
3413 sysinclude_default="${sysroot}/usr/include"
3414
3415 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3416     target_exec target_os yasmexe
3417 enabled cross_compile || host_cc_default=$cc
3418 set_default host_cc
3419
3420 pkg_config_fail_message=""
3421 if ! $pkg_config --version >/dev/null 2>&1; then
3422     warn "$pkg_config not found, library detection may fail."
3423     pkg_config=false
3424 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3425     pkg_config_fail_message="
3426 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3427 fi
3428
3429 if test $doxygen != $doxygen_default && \
3430   ! $doxygen --version >/dev/null 2>&1; then
3431     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3432 fi
3433
3434 exesuf() {
3435     case $1 in
3436         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3437     esac
3438 }
3439
3440 EXESUF=$(exesuf $target_os)
3441 HOSTEXESUF=$(exesuf $host_os)
3442
3443 # set temporary file name
3444 : ${TMPDIR:=$TEMPDIR}
3445 : ${TMPDIR:=$TMP}
3446 : ${TMPDIR:=/tmp}
3447
3448 if [ -n "$tempprefix" ] ; then
3449     mktemp(){
3450         echo $tempprefix.${HOSTNAME}.${UID}
3451     }
3452 elif ! check_cmd mktemp -u XXXXXX; then
3453     # simple replacement for missing mktemp
3454     # NOT SAFE FOR GENERAL USE
3455     mktemp(){
3456         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3457     }
3458 fi
3459
3460 tmpfile(){
3461     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3462         (set -C; exec > $tmp) 2>/dev/null ||
3463         die "Unable to create temporary file in $TMPDIR."
3464     append TMPFILES $tmp
3465     eval $1=$tmp
3466 }
3467
3468 trap 'rm -f -- $TMPFILES' EXIT
3469
3470 tmpfile TMPASM .asm
3471 tmpfile TMPC   .c
3472 tmpfile TMPCPP .cpp
3473 tmpfile TMPE   $EXESUF
3474 tmpfile TMPH   .h
3475 tmpfile TMPM   .m
3476 tmpfile TMPO   .o
3477 tmpfile TMPS   .S
3478 tmpfile TMPSH  .sh
3479 tmpfile TMPV   .ver
3480
3481 unset -f mktemp
3482
3483 chmod +x $TMPE
3484
3485 # make sure we can execute files in $TMPDIR
3486 cat > $TMPSH 2>> $logfile <<EOF
3487 #! /bin/sh
3488 EOF
3489 chmod +x $TMPSH >> $logfile 2>&1
3490 if ! $TMPSH >> $logfile 2>&1; then
3491     cat <<EOF
3492 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3493 variable to another directory and make sure that it is not mounted noexec.
3494 EOF
3495     die "Sanity test failed."
3496 fi
3497
3498 armasm_flags(){
3499     for flag; do
3500         case $flag in
3501             # Filter out MSVC cl.exe options from cflags that shouldn't
3502             # be passed to gas-preprocessor
3503             -M[TD]*)                                            ;;
3504             *)                  echo $flag                      ;;
3505         esac
3506    done
3507 }
3508
3509 ccc_flags(){
3510     for flag; do
3511         case $flag in
3512             -std=c99)           echo -c99                       ;;
3513             -mcpu=*)            echo -arch ${flag#*=}           ;;
3514             -mieee)             echo -ieee                      ;;
3515             -O*|-fast)          echo $flag                      ;;
3516             -fno-math-errno)    echo -assume nomath_errno       ;;
3517             -g)                 echo -g3                        ;;
3518             -Wall)              echo -msg_enable level2         ;;
3519             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3520             -Wl,*)              echo $flag                      ;;
3521             -f*|-W*)                                            ;;
3522             *)                  echo $flag                      ;;
3523         esac
3524    done
3525 }
3526
3527 cparser_flags(){
3528     for flag; do
3529         case $flag in
3530             -Wno-switch)             echo -Wno-switch-enum ;;
3531             -Wno-format-zero-length) ;;
3532             -Wdisabled-optimization) ;;
3533             -Wno-pointer-sign)       echo -Wno-other ;;
3534             *)                       echo $flag ;;
3535         esac
3536     done
3537 }
3538
3539 msvc_common_flags(){
3540     for flag; do
3541         case $flag in
3542             # In addition to specifying certain flags under the compiler
3543             # specific filters, they must be specified here as well or else the
3544             # generic catch all at the bottom will print the original flag.
3545             -Wall)                ;;
3546             -std=c99)             ;;
3547             # Common flags
3548             -fomit-frame-pointer) ;;
3549             -g)                   echo -Z7 ;;
3550             -fno-math-errno)      ;;
3551             -fno-common)          ;;
3552             -fno-signed-zeros)    ;;
3553             -fPIC)                ;;
3554             -mthumb)              ;;
3555             -march=*)             ;;
3556             -lz)                  echo zlib.lib ;;
3557             -lavifil32)           echo vfw32.lib ;;
3558             -lavicap32)           echo vfw32.lib user32.lib ;;
3559             -lx264)               echo libx264.lib ;;
3560             -l*)                  echo ${flag#-l}.lib ;;
3561             -LARGEADDRESSAWARE)   echo $flag ;;
3562             -L*)                  echo -libpath:${flag#-L} ;;
3563             *)                    echo $flag ;;
3564         esac
3565     done
3566 }
3567
3568 msvc_flags(){
3569     msvc_common_flags "$@"
3570     for flag; do
3571         case $flag in
3572             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3573                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3574                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3575                                        -wd4307 \
3576                                        -wd4273 -wd4554 -wd4701 ;;
3577         esac
3578     done
3579 }
3580
3581 icl_flags(){
3582     msvc_common_flags "$@"
3583     for flag; do
3584         case $flag in
3585             # Despite what Intel's documentation says -Wall, which is supported
3586             # on Windows, does enable remarks so disable them here.
3587             -Wall)                echo $flag -Qdiag-disable:remark ;;
3588             -std=c99)             echo -Qstd=c99 ;;
3589             -flto)                echo -ipo ;;
3590         esac
3591     done
3592 }
3593
3594 icc_flags(){
3595     for flag; do
3596         case $flag in
3597             -flto)                echo -ipo ;;
3598             *)                    echo $flag ;;
3599         esac
3600     done
3601 }
3602
3603 pgi_flags(){
3604     for flag; do
3605         case $flag in
3606             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3607             -fomit-frame-pointer) echo -Mnoframe ;;
3608             -g)                   echo -gopt ;;
3609             *)                    echo $flag ;;
3610         esac
3611     done
3612 }
3613
3614 suncc_flags(){
3615     for flag; do
3616         case $flag in
3617             -march=*|-mcpu=*)
3618                 case "${flag#*=}" in
3619                     native)                   echo -xtarget=native       ;;
3620                     v9|niagara)               echo -xarch=sparc          ;;
3621                     ultrasparc)               echo -xarch=sparcvis       ;;
3622                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3623                     i586|pentium)             echo -xchip=pentium        ;;
3624                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3625                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3626                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3627                     pentium4*)          echo -xtarget=pentium4           ;;
3628                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3629                     *-sse3)             echo -xarch=sse3                 ;;
3630                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3631                     bonnell)                   echo -xarch=ssse3         ;;
3632                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3633                     westmere)                  echo -xtarget=westmere    ;;
3634                     silvermont)                echo -xarch=sse4_2        ;;
3635                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3636                     core-avx*|ivybridge|haswell|broadwell)
3637                                                echo -xarch=avx           ;;
3638                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3639                     btver1)                    echo -xarch=amdsse4a      ;;
3640                     btver2|bdver*)             echo -xarch=avx           ;;
3641                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3642                     k8|opteron|athlon64|athlon-fx)
3643                                                echo -xarch=sse2a         ;;
3644                     athlon*)                   echo -xarch=pentium_proa  ;;
3645                 esac
3646                 ;;
3647             -std=c99)             echo -xc99              ;;
3648             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3649             -fPIC)                echo -KPIC -xcode=pic32 ;;
3650             -W*,*)                echo $flag              ;;
3651             -f*-*|-W*|-mimpure-text)                      ;;
3652             -shared)              echo -G                 ;;
3653             *)                    echo $flag              ;;
3654         esac
3655     done
3656 }
3657
3658 tms470_flags(){
3659     for flag; do
3660         case $flag in
3661             -march=*|-mcpu=*)
3662                 case "${flag#*=}" in
3663                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3664                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3665                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3666                     armv6*|arm11*)          echo -mv=6   ;;
3667                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3668                                             echo -mv=5e  ;;
3669                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3670                 esac
3671                 ;;
3672             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3673             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3674             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3675             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3676             -msoft-float)   echo --float_support=vfplib       ;;
3677             -O[0-3]|-mf=*)  echo $flag                        ;;
3678             -g)             echo -g -mn                       ;;
3679             -pds=*)         echo $flag                        ;;
3680             -D*|-I*)        echo $flag                        ;;
3681             --gcc|--abi=*)  echo $flag                        ;;
3682             -me)            echo $flag                        ;;
3683         esac
3684     done
3685 }
3686
3687 probe_cc(){
3688     pfx=$1
3689     _cc=$2
3690     first=$3
3691
3692     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3693     unset _ld_o _ldflags _ld_lib _ld_path
3694     unset _depflags _DEPCMD _DEPFLAGS
3695     _flags_filter=echo
3696
3697     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3698         true # no-op to avoid reading stdin in following checks
3699     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3700         _type=llvm_gcc
3701         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3702         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3703         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3704         _cflags_speed='-O3'
3705         _cflags_size='-Os'
3706     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3707         _type=gcc
3708         gcc_version=$($_cc --version | head -n1)
3709         gcc_basever=$($_cc -dumpversion)
3710         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3711         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3712         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3713         case $gcc_basever in
3714             2) ;;
3715             2.*) ;;
3716             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3717         esac
3718         if [ "$first" = true ]; then
3719             case $gcc_basever in
3720                 4.2*)
3721                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3722             esac
3723         fi
3724         _cflags_speed='-O3'
3725         _cflags_size='-Os'
3726     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3727         _type=icc
3728         _ident=$($_cc --version | head -n1)
3729         _depflags='-MMD'
3730         _cflags_speed='-O3'
3731         _cflags_size='-Os'
3732         _cflags_noopt='-O1'
3733         _flags_filter=icc_flags
3734     elif $_cc -v 2>&1 | grep -q xlc; then
3735         _type=xlc
3736         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3737         _cflags_speed='-O5'
3738         _cflags_size='-O5 -qcompact'
3739     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3740         _type=ccc
3741         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3742         _DEPFLAGS='-M'
3743         _cflags_speed='-fast'
3744         _cflags_size='-O1'
3745         _flags_filter=ccc_flags
3746     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3747         test -d "$sysroot" || die "No valid sysroot specified."
3748         _type=armcc
3749         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3750         armcc_conf="$PWD/armcc.conf"
3751         $_cc --arm_linux_configure                 \
3752              --arm_linux_config_file="$armcc_conf" \
3753              --configure_sysroot="$sysroot"        \
3754              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3755              die "Error creating armcc configuration file."
3756         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3757         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3758         as_default="${cross_prefix}gcc"
3759         _depflags='-MMD'
3760         _cflags_speed='-O3'
3761         _cflags_size='-Os'
3762     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3763         _type=tms470
3764         _ident=$($_cc -version | head -n1 | tr -s ' ')
3765         _flags='--gcc --abi=eabi -me'
3766         _cc_e='-ppl -fe=$@'
3767         _cc_o='-fe=$@'
3768         _depflags='-ppa -ppd=$(@:.o=.d)'
3769         _cflags_speed='-O3 -mf=5'
3770         _cflags_size='-O3 -mf=2'
3771         _flags_filter=tms470_flags
3772     elif $_cc -v 2>&1 | grep -q clang; then
3773         _type=clang
3774         _ident=$($_cc --version 2>/dev/null | head -n1)
3775         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3776         _cflags_speed='-O3'
3777         _cflags_size='-Os'
3778     elif $_cc -V 2>&1 | grep -q Sun; then
3779         _type=suncc
3780         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3781         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3782         _DEPFLAGS='-xM1 -xc99'
3783         _ldflags='-std=c99'
3784         _cflags_speed='-O5'
3785         _cflags_size='-O5 -xspace'
3786         _flags_filter=suncc_flags
3787     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3788         _type=pathscale
3789         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3790         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3791         _cflags_speed='-O2'
3792         _cflags_size='-Os'
3793         _flags_filter='filter_out -Wdisabled-optimization'
3794     elif $_cc -v 2>&1 | grep -q Open64; then
3795         _type=open64
3796         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3797         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3798         _cflags_speed='-O2'
3799         _cflags_size='-Os'
3800         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3801     elif $_cc -V 2>&1 | grep -q Portland; then
3802         _type=pgi
3803         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3804         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3805         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3806         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3807         _cflags_noopt="-O"
3808         _flags_filter=pgi_flags
3809     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3810         _type=armasm
3811         _ident=$($_cc | head -n1)
3812         # 4509: "This form of conditional instruction is deprecated"
3813         _flags="-nologo -ignore 4509"
3814         _flags_filter=armasm_flags
3815     elif $_cc 2>&1 | grep -q Intel; then
3816         _type=icl
3817         _ident=$($_cc 2>&1 | head -n1)
3818         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3819         # Not only is O3 broken on 13.x+ but it is slower on all previous
3820         # versions (tested) as well.
3821         _cflags_speed="-O2"
3822         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3823         if $_cc 2>&1 | grep -q Linker; then
3824             _ld_o='-out:$@'
3825         else
3826             _ld_o='-Fe$@'
3827         fi
3828         _cc_o='-Fo$@'
3829         _cc_e='-P'
3830         _flags_filter=icl_flags
3831         _ld_lib='lib%.a'
3832         _ld_path='-libpath:'
3833         # -Qdiag-error to make icl error when seeing certain unknown arguments
3834         _flags='-nologo -Qdiag-error:4044,10157'
3835         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3836         # with MSVC which enables it by default.
3837         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3838         disable stripping
3839     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3840         _type=msvc
3841         _ident=$($_cc 2>&1 | head -n1)
3842         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3843         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3844         _cflags_speed="-O2"
3845         _cflags_size="-O1"
3846         if $_cc -nologo- 2>&1 | grep -q Linker; then
3847             _ld_o='-out:$@'
3848         else
3849             _ld_o='-Fe$@'
3850         fi
3851         _cc_o='-Fo$@'
3852         _cc_e='-P -Fi$@'
3853         _flags_filter=msvc_flags
3854         _ld_lib='lib%.a'
3855         _ld_path='-libpath:'
3856         _flags='-nologo'
3857         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3858         disable stripping
3859     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3860         _type=cparser
3861         _ident=$($_cc --version | head -n1)
3862         _depflags='-MMD'
3863         _cflags_speed='-O4'
3864         _cflags_size='-O2'
3865         _flags_filter=cparser_flags
3866     fi
3867
3868     eval ${pfx}_type=\$_type
3869     eval ${pfx}_ident=\$_ident
3870 }
3871
3872 set_ccvars(){
3873     eval ${1}_C=\${_cc_c-\${${1}_C}}
3874     eval ${1}_E=\${_cc_e-\${${1}_E}}
3875     eval ${1}_O=\${_cc_o-\${${1}_O}}
3876
3877     if [ -n "$_depflags" ]; then
3878         eval ${1}_DEPFLAGS=\$_depflags
3879     else
3880         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3881         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3882         eval DEP${1}FLAGS=\$_flags
3883     fi
3884 }
3885
3886 probe_cc cc "$cc" "true"
3887 cflags_filter=$_flags_filter
3888 cflags_speed=$_cflags_speed
3889 cflags_size=$_cflags_size
3890 cflags_noopt=$_cflags_noopt
3891 add_cflags $_flags $_cflags
3892 cc_ldflags=$_ldflags
3893 set_ccvars CC
3894
3895 probe_cc hostcc "$host_cc"
3896 host_cflags_filter=$_flags_filter
3897 add_host_cflags  $_flags $_cflags
3898 set_ccvars HOSTCC
3899
3900 test -n "$cc_type" && enable $cc_type ||
3901     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3902
3903 : ${as_default:=$cc}
3904 : ${objcc_default:=$cc}
3905 : ${dep_cc_default:=$cc}
3906 : ${ld_default:=$cc}
3907 : ${host_ld_default:=$host_cc}
3908 set_default ar as objcc dep_cc ld host_ld windres
3909
3910 probe_cc as "$as"
3911 asflags_filter=$_flags_filter
3912 add_asflags $_flags $_cflags
3913 set_ccvars AS
3914
3915 probe_cc objcc "$objcc"
3916 objcflags_filter=$_flags_filter
3917 add_objcflags $_flags $_cflags
3918 set_ccvars OBJC
3919
3920 probe_cc ld "$ld"
3921 ldflags_filter=$_flags_filter
3922 add_ldflags $_flags $_ldflags
3923 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3924 LD_O=${_ld_o-$LD_O}
3925 LD_LIB=${_ld_lib-$LD_LIB}
3926 LD_PATH=${_ld_path-$LD_PATH}
3927
3928 probe_cc hostld "$host_ld"
3929 host_ldflags_filter=$_flags_filter
3930 add_host_ldflags $_flags $_ldflags
3931 HOSTLD_O=${_ld_o-$HOSTLD_O}
3932
3933 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3934     probe_cc depcc "$dep_cc"
3935     CCDEP=${_DEPCMD:-$DEPCMD}
3936     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3937     DEPCCFLAGS=$_flags
3938 fi
3939
3940 if $ar 2>&1 | grep -q Microsoft; then
3941     arflags="-nologo"
3942     ar_o='-out:$@'
3943 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3944     arflags="rq"
3945     ar_o='$@'
3946 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3947     arflags='-Xany -r -c'
3948     ar_o='$@'
3949 elif $ar 2>&1 | grep -q "\[D\] "; then
3950     arflags="rcD"
3951     ar_o='$@'
3952 else
3953     arflags="rc"
3954     ar_o='$@'
3955 fi
3956
3957 add_cflags $extra_cflags
3958 add_cxxflags $extra_cxxflags
3959 add_objcflags $extra_objcflags
3960 add_asflags $extra_cflags
3961
3962 if test -n "$sysroot"; then
3963     case "$cc_type" in
3964         gcc|llvm_gcc|clang)
3965             add_cppflags --sysroot="$sysroot"
3966             add_ldflags --sysroot="$sysroot"
3967 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3968             add_cppflags -isysroot "$sysroot"
3969             add_ldflags -isysroot "$sysroot"
3970         ;;
3971         tms470)
3972             add_cppflags -I"$sysinclude"
3973             add_ldflags  --sysroot="$sysroot"
3974         ;;
3975     esac
3976 fi
3977
3978 if test "$cpu" = host; then
3979     enabled cross_compile &&
3980         die "--cpu=host makes no sense when cross-compiling."
3981
3982     case "$cc_type" in
3983         gcc|llvm_gcc)
3984             check_native(){
3985                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3986                 sed -n "/cc1.*$1=/{
3987                             s/.*$1=\\([^ ]*\\).*/\\1/
3988                             p
3989                             q
3990                         }" $TMPE
3991             }
3992             cpu=$(check_native -march || check_native -mcpu)
3993         ;;
3994         clang)
3995             check_native(){
3996                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3997                 sed -n "/cc1.*-target-cpu /{
3998                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3999                             p
4000                             q
4001                         }" $TMPE
4002             }
4003             cpu=$(check_native -march)
4004         ;;
4005     esac
4006
4007     test "${cpu:-host}" = host &&
4008         die "--cpu=host not supported with compiler $cc"
4009 fi
4010
4011 # Deal with common $arch aliases
4012 case "$arch" in
4013     aarch64|arm64)
4014         arch="aarch64"
4015     ;;
4016     arm*|iPad*|iPhone*)
4017         arch="arm"
4018     ;;
4019     mips*|IP*)
4020         case "$arch" in
4021         *el)
4022             add_cppflags -EL
4023             add_ldflags -EL
4024         ;;
4025         *eb)
4026             add_cppflags -EB
4027             add_ldflags -EB
4028         ;;
4029         esac
4030         arch="mips"
4031     ;;
4032     parisc*|hppa*)
4033         arch="parisc"
4034     ;;
4035     "Power Macintosh"|ppc*|powerpc*)
4036         arch="ppc"
4037     ;;
4038     s390|s390x)
4039         arch="s390"
4040     ;;
4041     sh4|sh)
4042         arch="sh4"
4043     ;;
4044     sun4u|sparc*)
4045         arch="sparc"
4046     ;;
4047     tilegx|tile-gx)
4048         arch="tilegx"
4049     ;;
4050     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4051         arch="x86"
4052     ;;
4053 esac
4054
4055 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4056 enable $arch
4057
4058 # Add processor-specific flags
4059 if enabled aarch64; then
4060
4061     case $cpu in
4062         armv*)
4063             cpuflags="-march=$cpu"
4064         ;;
4065         *)
4066             cpuflags="-mcpu=$cpu"
4067         ;;
4068     esac
4069
4070 elif enabled alpha; then
4071
4072     cpuflags="-mcpu=$cpu"
4073
4074 elif enabled arm; then
4075
4076     check_arm_arch() {
4077         check_cpp_condition stddef.h \
4078             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4079             $cpuflags
4080     }
4081
4082     probe_arm_arch() {
4083         if   check_arm_arch 4;        then echo armv4;
4084         elif check_arm_arch 4T;       then echo armv4t;
4085         elif check_arm_arch 5;        then echo armv5;
4086         elif check_arm_arch 5E;       then echo armv5e;
4087         elif check_arm_arch 5T;       then echo armv5t;
4088         elif check_arm_arch 5TE;      then echo armv5te;
4089         elif check_arm_arch 5TEJ;     then echo armv5te;
4090         elif check_arm_arch 6;        then echo armv6;
4091         elif check_arm_arch 6J;       then echo armv6j;
4092         elif check_arm_arch 6K;       then echo armv6k;
4093         elif check_arm_arch 6Z;       then echo armv6z;
4094         elif check_arm_arch 6ZK;      then echo armv6zk;
4095         elif check_arm_arch 6T2;      then echo armv6t2;
4096         elif check_arm_arch 7;        then echo armv7;
4097         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4098         elif check_arm_arch 7S;       then echo armv7-a;
4099         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4100         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4101         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4102         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4103         fi
4104     }
4105
4106     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4107
4108     case $cpu in
4109         armv*)
4110             cpuflags="-march=$cpu"
4111             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4112         ;;
4113         *)
4114             cpuflags="-mcpu=$cpu"
4115             case $cpu in
4116                 cortex-a*)                               subarch=armv7a  ;;
4117                 cortex-r*)                               subarch=armv7r  ;;
4118                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4119                 arm11*)                                  subarch=armv6   ;;
4120                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4121                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4122                 *)                             subarch=$(probe_arm_arch) ;;
4123             esac
4124         ;;
4125     esac
4126
4127     case "$subarch" in
4128         armv5t*)    enable fast_clz                ;;
4129         armv[6-8]*)
4130             enable fast_clz
4131             disabled fast_unaligned || enable fast_unaligned
4132             ;;
4133     esac
4134
4135 elif enabled avr32; then
4136
4137     case $cpu in
4138         ap7[02]0[0-2])
4139             subarch="avr32_ap"
4140             cpuflags="-mpart=$cpu"
4141         ;;
4142         ap)
4143             subarch="avr32_ap"
4144             cpuflags="-march=$cpu"
4145         ;;
4146         uc3[ab]*)
4147             subarch="avr32_uc"
4148             cpuflags="-mcpu=$cpu"
4149         ;;
4150         uc)
4151             subarch="avr32_uc"
4152             cpuflags="-march=$cpu"
4153         ;;
4154     esac
4155
4156 elif enabled bfin; then
4157
4158     cpuflags="-mcpu=$cpu"
4159
4160 elif enabled mips; then
4161
4162     cpuflags="-march=$cpu"
4163
4164     case $cpu in
4165         24kc)
4166             disable mips32r6
4167             disable mips64r2
4168             disable mips64r6
4169             disable mipsfpu
4170             disable mipsdsp
4171             disable mipsdspr2
4172             disable msa
4173         ;;
4174         24kf*)
4175             disable mips32r6
4176             disable mips64r2
4177             disable mips64r6
4178             disable mipsdsp
4179             disable mipsdspr2
4180             disable msa
4181         ;;
4182         24kec|34kc|1004kc)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable mipsfpu
4187             disable mipsdspr2
4188             disable msa
4189         ;;
4190         24kef*|34kf*|1004kf*)
4191             disable mips32r6
4192             disable mips64r2
4193             disable mips64r6
4194             disable mipsdspr2
4195             disable msa
4196         ;;
4197         74kc)
4198             disable mips32r6
4199             disable mips64r2
4200             disable mips64r6
4201             disable mipsfpu
4202             disable msa
4203         ;;
4204         74kf)
4205             disable mips32r6
4206             disable mips64r2
4207             disable mips64r6
4208             disable msa
4209         ;;
4210         p5600)
4211             disable mips32r6
4212             disable mips64r2
4213             disable mips64r6
4214             disable mipsdsp
4215             disable mipsdspr2
4216             check_cflags "-mtune=p5600" &&
4217             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4218             add_asflags "-mfp64"
4219         ;;
4220         i6400)
4221             disable mips32r2
4222             disable mips32r6
4223             disable mips64r2
4224             disable mipsdsp
4225             disable mipsdspr2
4226             check_cflags "-mtune=i6400 -mabi=64" &&
4227             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4228             check_ldflags "-mabi=64" &&
4229             add_asflags "-mfp64"
4230         ;;
4231         loongson*)
4232             disable mips32r2
4233             disable mips32r6
4234             disable mips64r2
4235             disable mips64r6
4236             disable mipsfpu
4237             disable mipsdsp
4238             disable mipsdspr2
4239             disable msa
4240             enable local_aligned_8 local_aligned_16 local_aligned_32
4241             enable simd_align_16
4242             enable fast_64bit
4243             enable fast_clz
4244             enable fast_cmov
4245             enable fast_unaligned
4246             disable aligned_stack
4247             case $cpu in
4248                 loongson3*)
4249                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4250                 ;;
4251                 loongson2e)
4252                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4253                 ;;
4254                 loongson2f)
4255                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4256                 ;;
4257             esac
4258         ;;
4259         generic)
4260             disable mips64r6
4261             disable msa
4262         ;;
4263         *)
4264             # Unknown CPU. Disable everything.
4265             warn "unknown CPU. Disabling all MIPS optimizations."
4266             disable mipsfpu
4267             disable mips32r2
4268             disable mips32r6
4269             disable mips64r2
4270             disable mips64r6
4271             disable mipsdsp
4272             disable mipsdspr2
4273             disable msa
4274         ;;
4275     esac
4276
4277 elif enabled ppc; then
4278
4279     disable ldbrx
4280
4281     case $(tolower $cpu) in
4282         601|ppc601|powerpc601)
4283             cpuflags="-mcpu=601"
4284             disable altivec
4285         ;;
4286         603*|ppc603*|powerpc603*)
4287             cpuflags="-mcpu=603"
4288             disable altivec
4289         ;;
4290         604*|ppc604*|powerpc604*)
4291             cpuflags="-mcpu=604"
4292             disable altivec
4293         ;;
4294         g3|75*|ppc75*|powerpc75*)
4295             cpuflags="-mcpu=750"
4296             disable altivec
4297         ;;
4298         g4|745*|ppc745*|powerpc745*)
4299             cpuflags="-mcpu=7450"
4300             disable vsx
4301         ;;
4302         74*|ppc74*|powerpc74*)
4303             cpuflags="-mcpu=7400"
4304             disable vsx
4305         ;;
4306         g5|970|ppc970|powerpc970)
4307             cpuflags="-mcpu=970"
4308             disable vsx
4309         ;;
4310         power[3-6]*)
4311             cpuflags="-mcpu=$cpu"
4312             disable vsx
4313         ;;
4314         power[7-8]*)
4315             cpuflags="-mcpu=$cpu"
4316         ;;
4317         cell)
4318             cpuflags="-mcpu=cell"
4319             enable ldbrx
4320             disable vsx
4321         ;;
4322         e500mc)
4323             cpuflags="-mcpu=e500mc"
4324             disable altivec
4325         ;;
4326         e500v2)
4327             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4328             disable altivec
4329             disable dcbzl
4330         ;;
4331         e500)
4332             cpuflags="-mcpu=8540 -mhard-float"
4333             disable altivec
4334             disable dcbzl
4335         ;;
4336     esac
4337
4338 elif enabled sparc; then
4339
4340     case $cpu in
4341         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4342             cpuflags="-mcpu=$cpu"
4343         ;;
4344         ultrasparc*|niagara[234])
4345             cpuflags="-mcpu=$cpu"
4346         ;;
4347     esac
4348
4349 elif enabled x86; then
4350
4351     case $cpu in
4352         i[345]86|pentium)
4353             cpuflags="-march=$cpu"
4354             disable i686
4355             disable mmx
4356         ;;
4357         # targets that do NOT support nopl and conditional mov (cmov)
4358         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4359             cpuflags="-march=$cpu"
4360             disable i686
4361         ;;
4362         # targets that do support nopl and conditional mov (cmov)
4363         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4364         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4365             cpuflags="-march=$cpu"
4366             enable i686
4367             enable fast_cmov
4368         ;;
4369         # targets that do support conditional mov but on which it's slow
4370         pentium4|pentium4m|prescott|nocona)
4371             cpuflags="-march=$cpu"
4372             enable i686
4373             disable fast_cmov
4374         ;;
4375     esac
4376
4377 fi
4378
4379 if [ "$cpu" != generic ]; then
4380     add_cflags  $cpuflags
4381     add_asflags $cpuflags
4382     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4383 fi
4384
4385 # compiler sanity check
4386 check_exec <<EOF
4387 int main(void){ return 0; }
4388 EOF
4389 if test "$?" != 0; then
4390     echo "$cc is unable to create an executable file."
4391     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4392         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4393         echo "Only do this if you know what cross compiling means."
4394     fi
4395     die "C compiler test failed."
4396 fi
4397
4398 add_cppflags -D_ISOC99_SOURCE
4399 add_cxxflags -D__STDC_CONSTANT_MACROS
4400 check_cflags -std=c99
4401 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4402 #include <stdlib.h>
4403 EOF
4404 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4405 #include <stdlib.h>
4406 EOF
4407
4408 add_host_cppflags -D_ISOC99_SOURCE
4409 check_host_cflags -std=c99
4410 check_host_cflags -Wall
4411 check_host_cflags -O3
4412
4413 check_64bit(){
4414     arch32=$1
4415     arch64=$2
4416     expr=$3
4417     check_code cc "" "int test[2*($expr) - 1]" &&
4418         subarch=$arch64 || subarch=$arch32
4419 }
4420
4421 case "$arch" in
4422     aarch64|alpha|ia64)
4423         spic=$shared
4424     ;;
4425     mips)
4426         check_64bit mips mips64 '_MIPS_SIM > 1'
4427         spic=$shared
4428     ;;
4429     parisc)
4430         check_64bit parisc parisc64 'sizeof(void *) > 4'
4431         spic=$shared
4432     ;;
4433     ppc)
4434         check_64bit ppc ppc64 'sizeof(void *) > 4'
4435         spic=$shared
4436     ;;
4437     s390)
4438         check_64bit s390 s390x 'sizeof(void *) > 4'
4439         spic=$shared
4440     ;;
4441     sparc)
4442         check_64bit sparc sparc64 'sizeof(void *) > 4'
4443         spic=$shared
4444     ;;
4445     x86)
4446         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4447         # Treat x32 as x64 for now. Note it also needs spic=$shared
4448         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4449             subarch=x86_64
4450         if test "$subarch" = "x86_64"; then
4451             spic=$shared
4452         fi
4453     ;;
4454     ppc)
4455         check_cc <<EOF && subarch="ppc64"
4456         int test[(int)sizeof(char*) - 7];
4457 EOF
4458     ;;
4459 esac
4460
4461 enable $subarch
4462 enabled spic && enable_weak pic
4463
4464 # OS specific
4465 case $target_os in
4466     aix)
4467         SHFLAGS=-shared
4468         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4469         enabled shared && add_ldflags -Wl,-brtl
4470         ;;
4471     android)
4472         disable symver
4473         enable section_data_rel_ro
4474         SLIB_INSTALL_NAME='$(SLIBNAME)'
4475         SLIB_INSTALL_LINKS=
4476         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4477         ;;
4478     haiku)
4479         prefix_default="/boot/common"
4480         network_extralibs="-lnetwork"
4481         host_libs=
4482         ;;
4483     sunos)
4484         SHFLAGS='-shared -Wl,-h,$$(@F)'
4485         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4486         network_extralibs="-lsocket -lnsl"
4487         add_cppflags -D__EXTENSIONS__
4488         # When using suncc to build, the Solaris linker will mark
4489         # an executable with each instruction set encountered by
4490         # the Solaris assembler.  As our libraries contain their own
4491         # guards for processor-specific code, instead suppress
4492         # generation of the HWCAPS ELF section on Solaris x86 only.
4493         enabled_all suncc x86 &&
4494             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4495             add_ldflags -Wl,-M,mapfile
4496         nm_default='nm -P -g'
4497         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4498         ;;
4499     netbsd)
4500         disable symver
4501         oss_indev_extralibs="-lossaudio"
4502         oss_outdev_extralibs="-lossaudio"
4503         enabled gcc || check_ldflags -Wl,-zmuldefs
4504         ;;
4505     openbsd|bitrig)
4506         disable symver
4507         SHFLAGS='-shared'
4508         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4509         SLIB_INSTALL_LINKS=
4510         oss_indev_extralibs="-lossaudio"
4511         oss_outdev_extralibs="-lossaudio"
4512         ;;
4513     dragonfly)
4514         disable symver
4515         ;;
4516     freebsd)
4517         ;;
4518     bsd/os)
4519         add_extralibs -lpoll -lgnugetopt
4520         strip="strip -d"
4521         ;;
4522     darwin)
4523         enabled ppc && add_asflags -force_cpusubtype_ALL
4524         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4525         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4526         strip="${strip} -x"
4527         add_ldflags -Wl,-dynamic,-search_paths_first
4528         SLIBSUF=".dylib"
4529         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4530         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4531         objformat="macho"
4532         enabled x86_64 && objformat="macho64"
4533         enabled_any pic shared x86_64 ||
4534             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4535         ;;
4536     msys*)
4537         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4538         ;;
4539     mingw32*|mingw64*)
4540         if test $target_os = "mingw32ce"; then
4541             disable network
4542         else
4543             target_os=mingw32
4544         fi
4545         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4546         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4547         LIBTARGET=i386
4548         if enabled x86_64; then
4549             LIBTARGET="i386:x86-64"
4550         elif enabled arm; then
4551             LIBTARGET=arm-wince
4552         fi
4553         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4554         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4555         shlibdir_default="$bindir_default"
4556         SLIBPREF=""
4557         SLIBSUF=".dll"
4558         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4559         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4560         dlltool="${cross_prefix}dlltool"
4561         if check_cmd lib.exe -list; then
4562             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4563             if enabled x86_64; then
4564                 LIBTARGET=x64
4565             fi
4566         elif check_cmd $dlltool --version; then
4567             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4568         fi
4569         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4570         SLIB_INSTALL_LINKS=
4571         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4572         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4573         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4574         objformat="win32"
4575         ranlib=:
4576         enable dos_paths
4577         check_ldflags -Wl,--nxcompat,--dynamicbase
4578         # Lets work around some stupidity in binutils.
4579         # ld will strip relocations from executables even though we need them
4580         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4581         # however ld then forgets what the entry point should be (oops) so we
4582         # have to manually (re)set it.
4583         if enabled x86_32; then
4584             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4585         elif enabled x86_64; then
4586             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4587             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4588             # Set image base >4GB for extra entropy with HEASLR
4589             add_ldexeflags -Wl,--image-base,0x140000000
4590             append SHFLAGS -Wl,--image-base,0x180000000
4591         fi
4592         ;;
4593     win32|win64)
4594         disable symver
4595         if enabled shared; then
4596             # Link to the import library instead of the normal static library
4597             # for shared libs.
4598             LD_LIB='%.lib'
4599             # Cannot build both shared and static libs with MSVC or icl.
4600             disable static
4601         fi
4602         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4603         shlibdir_default="$bindir_default"
4604         SLIBPREF=""
4605         SLIBSUF=".dll"
4606         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4607         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4608         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4609         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4610         SLIB_INSTALL_LINKS=
4611         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4612         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4613         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4614         objformat="win32"
4615         ranlib=:
4616         enable dos_paths
4617         ;;
4618     cygwin*)
4619         target_os=cygwin
4620         shlibdir_default="$bindir_default"
4621         SLIBPREF="cyg"
4622         SLIBSUF=".dll"
4623         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4624         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4625         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4626         SLIB_INSTALL_LINKS=
4627         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4628         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4629         objformat="win32"
4630         enable dos_paths
4631         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4632         ;;
4633     *-dos|freedos|opendos)
4634         network_extralibs="-lsocket"
4635         objformat="coff"
4636         enable dos_paths
4637         add_cppflags -U__STRICT_ANSI__
4638         ;;
4639     linux)
4640         enable dv1394
4641         enable section_data_rel_ro
4642         ;;
4643     irix*)
4644         target_os=irix
4645         ranlib="echo ignoring ranlib"
4646         ;;
4647     os/2*)
4648         strip="lxlite -CS"
4649         ln_s="cp -f"
4650         objformat="aout"
4651         add_cppflags -D_GNU_SOURCE
4652         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4653         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4654         LIBSUF="_s.a"
4655         SLIBPREF=""
4656         SLIBSUF=".dll"
4657         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4658         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4659         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4660             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4661             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4662             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4663             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4664         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4665             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4666         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4667         enable dos_paths
4668         enable_weak os2threads
4669         ;;
4670     gnu/kfreebsd)
4671         add_cppflags -D_BSD_SOURCE
4672         ;;
4673     gnu)
4674         ;;
4675     qnx)
4676         add_cppflags -D_QNX_SOURCE
4677         network_extralibs="-lsocket"
4678         ;;
4679     symbian)
4680         SLIBSUF=".dll"
4681         enable dos_paths
4682         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4683         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4684         add_ldflags -Wl,--target1-abs,--no-undefined \
4685                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4686                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4687         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4688                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4689                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4690         ;;
4691     osf1)
4692         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4693         ;;
4694     minix)
4695         ;;
4696     plan9)
4697         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4698                      -D_REENTRANT_SOURCE        \
4699                      -D_RESEARCH_SOURCE         \
4700                      -DFD_SETSIZE=96            \
4701                      -DHAVE_SOCK_OPTS
4702         add_compat strtod.o strtod=avpriv_strtod
4703         network_extralibs='-lbsd'
4704         exeobjs=compat/plan9/main.o
4705         disable ffserver
4706         cp_f='cp'
4707         ;;
4708     none)
4709         ;;
4710     *)
4711         die "Unknown OS '$target_os'."
4712         ;;
4713 esac
4714
4715 # test if creating links works
4716 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4717 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4718 mkdir "$link_dest"
4719 $ln_s "$link_dest" "$link_name"
4720 touch "$link_dest/test_file"
4721 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4722     # create link to source path
4723     [ -e src ] && rm src
4724     $ln_s "$source_path" src
4725     source_link=src
4726 else
4727     # creating directory links doesn't work
4728     # fall back to using the full source path
4729     source_link="$source_path"
4730 fi
4731 # cleanup
4732 rm -r "$link_dest"
4733 rm -r "$link_name"
4734
4735 # determine libc flavour
4736
4737 probe_libc(){
4738     pfx=$1
4739     pfx_no_=${pfx%_}
4740     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4741     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4742         eval ${pfx}libc_type=uclibc
4743         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4744     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4745         eval ${pfx}libc_type=glibc
4746         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4747     # MinGW headers can be installed on Cygwin, so check for newlib first.
4748     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4749         eval ${pfx}libc_type=newlib
4750         add_${pfx}cppflags -U__STRICT_ANSI__
4751     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4752     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4753         eval ${pfx}libc_type=mingw64
4754         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4755             add_compat msvcrt/snprintf.o
4756             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4757         fi
4758         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4759         eval test \$${pfx_no_}cc_type = "gcc" &&
4760             add_${pfx}cppflags -D__printf__=__gnu_printf__
4761     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4762          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4763         eval ${pfx}libc_type=mingw32
4764         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4765             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4766             die "ERROR: MinGW32 runtime version must be >= 3.15."
4767         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4768         eval test \$${pfx_no_}cc_type = "gcc" &&
4769             add_${pfx}cppflags -D__printf__=__gnu_printf__
4770     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4771         eval ${pfx}libc_type=msvcrt
4772         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4773             if [ "$pfx" = host_ ]; then
4774                 add_host_cppflags -Dsnprintf=_snprintf
4775             else
4776                 add_compat strtod.o strtod=avpriv_strtod
4777                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4778                                              _snprintf=avpriv_snprintf  \
4779                                              vsnprintf=avpriv_vsnprintf
4780             fi
4781         fi
4782         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4783         # 0x601 by default unless something else is set by the user.
4784         # This can easily lead to us detecting functions only present
4785         # in such new versions and producing binaries requiring windows 7.0.
4786         # Therefore explicitly set the default to XP unless the user has
4787         # set something else on the command line.
4788         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4789         # family. For these cases, configure is free to use any functions
4790         # found in the SDK headers by default. (Alternatively, we could force
4791         # _WIN32_WINNT to 0x0602 in that case.)
4792         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4793             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4794 #ifdef WINAPI_FAMILY
4795 #include <winapifamily.h>
4796 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4797 #error not desktop
4798 #endif
4799 #endif
4800 EOF
4801     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4802         eval ${pfx}libc_type=klibc
4803     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4804         eval ${pfx}libc_type=bionic
4805     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4806         eval ${pfx}libc_type=solaris
4807         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4808     fi
4809     check_${pfx}cc <<EOF
4810 #include <time.h>
4811 void *v = localtime_r;
4812 EOF
4813 test "$?" != 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
4814 #include <time.h>
4815 void *v = localtime_r;
4816 EOF
4817
4818 }
4819
4820 probe_libc
4821 test -n "$libc_type" && enable libc_$libc_type
4822 probe_libc host_